JPH08207130A - Injection stretch blow molding machine and method - Google Patents

Abstract

PURPOSE: To miniaturize a product take-out device and to effectively utilize an advantage capable of conserving a space when the process from injection molding to stretch blow molding is consistently performed. CONSTITUTION: An injection stretch blow molding machine is equipped with a rotary plate 16 supported in a rotatable manner and feeding a preform or a product, the injection molding part 22 for molding a preform arranged along the rotary locus of the rotary plate 16 on a molding machine stand 10, a temp. control part 24 controlling the preform to proper stretching temp., a stretch blow molding part 26 molding the preform into a product shape and a product take-out part 28 taking out the product molded by the stretch blow molding part. In this case, a product take-out conveyor 38 is arranged to the position corresponding to the product take-out part 28 on the molding machine stand 10 and a product take-out device 36 is arranged to the side wall of the molding machine stand 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection stretch blow molding machine and an injection stretch blow molding method, and more particularly, to an injection stretch blow molding machine and an injection stretch blow molding method that consistently perform from injection molding to stretch blow molding. .

[0002]

2. Description of the Related Art Blow molding machines for molding plastic containers have been well known, and among them, as an injection stretch blow molding machine that consistently performs from injection molding to stretch blow molding, for example, Japanese Patent Publication No. There are known injection stretch blow molding machines as disclosed in JP-A-22096 and JP-B-5-32211.

In the injection stretch blow molding machine disclosed in Japanese Patent Publication No. 53-22096, a lower base on the machine base and an upper base above the base are integrally connected by a tie rod in the peripheral portion, and the two bases are connected. Between the two parts, the molded product is conveyed by the rotary conveying member, the injection molding of the preform in the injection molding part, the temperature control of the preform in the temperature control part, the blow molding into the product shape in the stretch blow molding part, the product unloading part In order to reduce the size of the molding machine, it is possible to sequentially perform each operation such as taking out the product in (1).

The injection stretch blow molding machine disclosed in Japanese Patent Publication No. 5-32211 is provided with an injection molding section, a stretch blow molding section, and a product unloading section on three sides. It is transported and molded.

Further, in each of these injection stretch blow molding machines, an injection molding die, a temperature control device and a blow molding die are provided below the rotary conveying member in the injection molding section, the temperature control section and the stretch blow molding section. The molds, and their drive mechanism and the like are provided.

On the other hand, in the product take-out section, there is no need for a molding die such as an injection molding section, a temperature control section, a stretch blow molding section, a temperature control device, etc. The space below was left empty, and a shooter for discharging the product to the outside of the molding machine was simply provided at the lower part of the space.

This shooter is based on Japanese Patent Publication Sho 53-22096.
In the case of No. 2, the arrangement direction of the products in the product take-out section is parallel to the side surface of the molding machine base, and the shooter is also arranged in parallel to the side surface of the molding machine base in the same manner as the arrangement direction of the products. It is designed to be connected to the lower part of the platform side.

Further, in the case of Japanese Patent Publication No. 5-32211, the arrangement direction of the products in the product take-out portion is inclined with respect to the side surface of the molding machine base. A shooter is arranged in a tilted state along the arrangement direction of the products in a tilted state, and is connected to the lower portion of the side surface of the molding machine base from there.

[0009]

In the conventional injection stretch blow molding machine described above, a shooter is provided at the product take-out portion. However, this shooter only discharges the product outside the molding machine. The state of subsequent products, such as alignment, was not taken into consideration.

On the other hand, in recent years, the size of the injection stretch blow molding machine has become large, and the number of products taken in one cycle tends to increase.

As described above, with the increase in the number of products taken in one cycle, it is necessary to improve the efficiency of post-processes such as product inspection after molding. As a result, automatic line-up of post-processes such as product inspection after molding is required. Therefore, it has become necessary to align and transfer the products taken out from the injection stretch blow molding machine to the product taking-out conveyor in an upright state.

Therefore, there is a market demand that not only the product is simply discharged from the injection stretch blow molding machine as in the prior art, but also the product is taken out and the product is aligned upright on the product take-out conveyor. .

In order to meet this market demand, Japanese Patent Laid-Open No. 4-1
As shown in Japanese Patent No. 2822, by installing the product take-out conveyor and the product take-out device to the side of the injection stretch blow molding machine, the product take-out device aligns the products in an upright state on the product take-out conveyor. Things are being developed.

However, in such an injection stretch blow molding machine, the products can be taken out from the product take-out section and aligned in an upright state on the product take-out conveyor, which facilitates the post-process such as product inspection. On the other hand, the product take-out device is very large, and the advantage of the space-saving injection stretch blow molding machine cannot be effectively utilized.

As described above, the reason why the product take-out device becomes large is inevitable because the product is discharged to the outside of the injection stretch blow molding machine, and the product is taken out of the injection stretch blow molding machine, that is, the molding machine. A product take-out conveyor is installed on the side of the table, and a product take-out device is installed outside the product take-out conveyor. A long arm is extended from the product take-out device over the product take-out conveyor to the product take-out section to take out the product. This is due to the fact that it is carried on a conveyor.

Also, the injection stretch blow molding machine is disclosed in Japanese Patent Publication No.
As disclosed in Japanese Patent Laid-Open No. 3-32096, the width of the molding machine base is limited by the base of the injection molding unit supported by the tie rods, the rotary transport locus of the rotary transport member, and the like, particularly from the product take-out unit. There is also a problem that the distance to the outer side surface of the molding machine is relatively long and therefore the distance to the product take-out conveyor is long.

Further, as shown in Japanese Patent Publication No. 5-33211, when the product arranging direction in the product take-out portion is inclined with respect to the side surface of the molding machine, the products are taken out in line. However, there is also a problem that the product take-out device becomes complicated and large in size in order to correct the arrangement direction.

The present invention has been made by paying attention to the above-mentioned conventional problems, and its object is to save space in the case where the product take-out device is made as small as possible and the injection molding to the stretch blow molding are performed consistently. It is an object of the present invention to provide an injection stretch blow molding machine and an injection stretch blow molding method that can effectively utilize the advantage of being capable of being made into a material.

[0019]

An injection stretch blow molding machine according to a first aspect of the present invention includes a rotary conveyance member rotatably supported above a molding machine table for conveying a preform or a product, and a rotary conveyance member on the molding machine table. At least an injection molding part for preform molding, which is arranged along the rotation trajectory of the rotary conveying member, a stretch blow molding part for molding this preform into a product shape, and a product taken out by the stretch blow molding part. In the injection stretch blow molding machine including the parts, a product takeout conveyor is arranged at a position corresponding to the product takeout part on the molding machine base.

An injection stretch blow molding machine according to a second aspect of the present invention includes a rotary conveyance member rotatably supported above the molding machine table for conveying a preform or a product, and a rotation trajectory of the rotary conveyance member on the molding machine table. Injection molding provided with at least an injection molding part for preform molding, which is disposed along with, a stretch blow molding part for molding the preform into a product shape, and a product unloading part for taking out a product molded by the stretch blow molding part. The blow molding machine is characterized in that a product takeout conveyor is provided at a position inside the maximum width of the molding machine base.

The injection stretch blow molding machine according to the third invention is characterized in that, in the second invention, the maximum width of the molding machine base is wider than a tie rod interval for clamping the injection molding section.

An injection stretch blow molding machine according to a fourth aspect of the present invention is the injection stretch blow molding machine according to the second aspect of the present invention, which is supported by a tie rod for clamping the injection molding section erected on the molding machine stand on the upper surface side of the rotary conveying member. And a maximum width of the molding machine base is wider than a width of the upper base. An injection stretch blow molding machine according to a fifth aspect of the present invention includes an upper base supported by a tie rod erected on a molding machine stand, and a rotation rotatably supported on a lower surface side of the upper base to convey a preform or a product. A conveying member, at least an injection molding portion for preform molding arranged along the rotation trajectory of the outer periphery of the rotary conveying member on the molding machine base, a stretch blow molding portion and a stretch for molding the preform into a product shape. In an injection stretch blow molding machine including a product take-out section for taking out a product molded in the blow-molding section, a product take-out conveyor is provided at an outer periphery of the upper base at a position corresponding to the product take-out section or a position inside a rotation locus of the rotary conveying member. Is provided.

An injection stretch blow molding machine according to a sixth aspect of the present invention includes a rotary conveying member that is rotatably supported above a molding machine table and conveys a preform or a product, and a rotation trajectory of the rotary conveying member on the molding machine table. Injection molding provided with at least an injection molding part for preform molding, which is disposed along with, a stretch blow molding part for molding the preform into a product shape, and a product unloading part for taking out a product molded by the stretch blow molding part. In the blow molding machine, a product take-out device is installed on a side wall of the molding machine table at a position corresponding to the product take-out part, and a product take-out conveyor is arranged between the product take-out device and the product take-out part.

In the injection stretch blow molding machine according to the seventh aspect of the invention, in the sixth aspect of the invention, the arrangement direction of the products in the product take-out portion and the product conveying direction of the product take-out conveyor are provided in parallel. It has a feature.

An injection stretch blow molding machine according to an eighth invention is the injection stretch blow molding machine according to the sixth invention, wherein a shooter for discharging a preform or a defective molding product is arranged on the molding machine stand at the product take-out position. It has a feature.

An injection stretch blow molding machine according to a ninth aspect of the present invention comprises an upper base supported by a tie rod erected on a molding machine stand and a preform or a product rotatably supported on the lower surface side of the upper base. A rotary conveying member that is held and conveyed by a conveying and holding member, and at least an injection molding unit for preform molding that is arranged along the rotation trajectory of the outer periphery of the rotary conveying member on the molding machine table, and the preform is manufactured as a product. A stretch blow molding section for molding into a shape and a product take-out section for taking out a product molded by the stretch blow molding section; a product take-out apparatus installed on the side wall of the molding machine table at a position corresponding to the product take-out section; and this product take-out apparatus. A product take-out conveyor arranged between the product take-out section, the product take-out device,
Product holding means for holding the product at the product position held by the transport holding member in the product take-out section and taking out the product onto the product take-out conveyor, the product position of the product take-out section and the product take-out conveyor corresponding position Forward and backward means for horizontally moving the product holding means, and elevating means for moving the product holding means up and down between the height position of the product take-out portion and the height position of the product take-out conveyor. Is characterized by.

An injection stretch blow molding machine according to a tenth invention is the injection stretching blow molding machine according to the ninth invention, wherein the elevating means of the product unloading device is a rotary conveying member when the product holding means holds the product at the product unloading portion position. It is characterized in that it is provided with a retreating means for lowering and retreating the product to a position where the product conveyance holding member provided in the above does not come into contact with the product.

An injection stretch blow molding machine according to an eleventh aspect of the present invention is a rotary conveying member that is rotatably supported above a molding machine table and conveys a preform or a product, and a rotation trajectory of the rotary conveyance member on the molding machine table. Injection stretch provided with at least an injection molding part for preform molding, which is disposed along with, a stretch blow molding part for molding the preform into a product shape, and a product unloading part for taking out the product formed by the stretch blow molding part. In the blow molding machine, a portion corresponding to the product take-out portion of the molding machine base is cut out to form a concave portion, and the product take-out conveyor is arranged in the concave portion just below the product take-out portion.

An injection stretch blow molding method according to the twelfth invention is at least a preform injection molding step, a stretch blow molding step of molding the preform into a product shape, and a product unloading step of taking out a product molded by the stretch blow molding. In the injection stretch blow molding method, in which the preform or the product is held by a carrying and holding member provided on the rotary carrying member and is rotatably carried to perform a one-cycle molding process, the product unloading process is carried out by rotating the product. Is held by the product holding means, the product held by the product holding means is lowered and retracted to a position where it does not contact the transport holding member, and the product is moved from the retracted position to the molding machine table or the molding machine table. The step of horizontally moving to a position above the product take-out conveyor provided inside the maximum width of the product take-out conveyor, It is characterized in that it comprises a step of shifting on the product take-out conveyor in upright position the product is lowered moving the product from the upper position to the product removal conveyor.

The injection stretch blow molding method according to the thirteenth invention comprises at least a preform injection molding step, a stretch blow molding step of molding the preform into a product shape, and a product unloading step of taking out a product molded by the stretch blow molding. In the injection stretch blow molding method in which the preform or the product is held by the carrying and holding member provided on the rotary carrying member and rotatably carried by one cycle of the molding step, the product unloading step is performed by the rotary carrying member. If the conveyed object is a molding defective product or a preform immediately after the start of molding, or a good product is selected, and if the conveyed object is the defective molding product or preform, When the object to be conveyed is a good product, it is discharged by the shooter provided directly below the rotary conveying member.
The product take-out device is used to convey and transfer the product in an upright state to a product take-out conveyor provided on the molding machine table or inside the maximum width of the molding machine table.

[0031]

In the injection stretch blow molding machine according to the first aspect of the present invention, the product take-out conveyor is arranged at a position corresponding to the product take-out portion on the molding machine table so that the product take-out conveyor can be formed. Space saving is achieved by not protruding to the side. Furthermore, when attempting to transfer the product from the product unloading section to the product unloading conveyor by using the product unloading device, the product unloading device may be used to move the product from the product unloading section even if it is located outside the product unloading conveyor. Since the stroke for transferring and transferring the product to the take-out conveyor can be shortened, it can contribute to the space saving of the injection stretch blow molding machine.

In the injection stretch blow molding machine according to the second aspect of the invention, the product take-out conveyor is provided outside the maximum width of the molding machine base by providing the product take-out conveyor at a position inside the maximum width of the molding machine base. Space saving is achieved without protruding. Further, even when the product is transferred from the product unloading section to the product unloading conveyor by using the product unloading apparatus, the product unloading apparatus can be arranged close to the product unloading section, and as a result, the product unloading section can be installed. The transfer stroke of the product from the product to the product take-out conveyor can be shortened, the product take-out device can be downsized accordingly, and the entire injection stretch blow molding machine can be downsized to save space.

In the third and fourth inventions,
Since the maximum width of the molding machine base is wider than the spacing between the tie rods for mold clamping in the injection molding section or wider than the upper base supported by this tie rod, the maximum width of the molding machine base is approximately the maximum width of the molding machine. Therefore, the space for the molding machine can be saved by providing the product takeout conveyor inside the maximum width of the molding machine.

Further, when the product take-out conveyor is installed on the molding machine base, the product take-out conveyor does not project outward than the maximum width of the molding machine base, and the product is always inside the maximum width of the molding machine base. Even if the unloading conveyor is installed and the product unloading device is installed outside it, the product transfer stroke of the product unloading device can be shortened. The molding machine can be downsized and space can be saved.

In the injection stretch blow molding machine according to the fifth aspect of the present invention, by disposing the product take-out conveyor at the position corresponding to the product take-out portion, at the inner periphery of the outer periphery of the upper base or the rotation locus of the rotary conveying member. In addition, regardless of the state of the molding machine table, the product takeout conveyor does not project outward from the outer periphery of the upper base or the rotation trajectory of the rotary transport plate, and space can be saved. Furthermore, even when the product unloading device is arranged outside the product unloading conveyor, the transfer transition stroke from the product unloading part of the product unloading device to the product unloading conveyor can be shortened, and the product unloading device The size can be reduced, and as a result, the injection stretch blow molding machine can be downsized and space can be saved.

In the injection stretch blow molding machine according to the sixth aspect of the present invention, a product take-out device is installed on the side wall of the molding machine base at a position corresponding to the product take-out part, and the product take-out device is provided between the product take-out part and the product take-out part. By disposing the product take-out conveyor, the product take-out device only needs to have a stroke that reciprocates between the product take-out section and the product take-out conveyor, and the product take-out device can be downsized, resulting in injection stretch blow molding. It is possible to reduce the size of the machine and save space.

According to the seventh aspect of the present invention, by providing the product arranging direction in the product unloading section and the product transporting direction of the product unloading conveyor in parallel, the product unloading device can be constructed without using a complicated mechanism. The transfer from the product unloading section to the product unloading conveyor can be performed with a simple configuration.

In the injection stretch blow molding machine according to the eighth aspect of the invention, a shooter for discharging a preform or a defective molded product is provided on the molding machine table at the product take-out position, thereby providing a product take-out conveyor. In addition to taking out the product by, the preform or defective molding product can be easily and surely discharged from the shooter.

In the injection stretch blow molding machine according to the ninth aspect of the present invention, the product holding means of the product take-out device holds the product at the product take-out portion position, and the forward / backward movement means holds the product take-out portion corresponding position and the product take-out conveyor. The product is taken out from the product take-out section by moving the product holding means horizontally between the corresponding positions and raising and lowering the product holding means from the height position of the product take-out section to the height position of the product take-out conveyor by the elevating means. It is possible to reliably transfer and transfer to the conveyor.

In the injection stretch blow molding machine according to the tenth aspect of the present invention, the retracting means for lowering and retracting the product to the position where the product transport holding member provided on the rotary transport member of the product take-out device does not contact the product. By providing the product holding means, when the product holding means holds the product at the product take-out position, it is possible to prevent the carrying holding member from coming into contact with the product, and the product is held without affecting the operation of the rotary carrying member. It can be taken out reliably.

By disposing the product take-out conveyor in the recess directly below the product take-out part formed by cutting out the part corresponding to the product take-out part of the molding machine stand according to the eleventh invention, the product take-out conveyor is located outside the molding machine stand. It can be installed without projecting to the end, the injection stretch blow molding machine can be miniaturized, and the product take-out conveyor is located directly below the product take-out part, so the product can be taken out only by vertical movement. You can

In the injection stretch blow molding method according to the twelfth aspect of the present invention, while holding the rotationally transferred product, the product is lowered and retracted to a position where it does not come into contact with the carrying and holding member, and at that position, above the product takeout conveyor. By moving the product horizontally to the position, moving the product downward from there onto the product take-out conveyor, and moving the product in the upright state, without affecting the operation of the rotary conveyance member from the product take-out section to the product take-out conveyor, Moreover, they can be arranged in an upright state,
Post-processes such as product inspection after molding the molded product can be reliably performed.

In the injection stretch blow molding method according to the thirteenth invention, the objects to be conveyed conveyed by the rotary conveying member are selected, and when the objects to be conveyed are defective molding products or preforms. It discharges by the shooter provided directly below the rotary conveying member, and if it is a good product, it is conveyed to the product unloading conveyor in the upright state by using the product unloading device, and only the good product is reliably taken out. It can be transferred to a conveyor, and products can be sorted easily and reliably.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 7 are views showing an injection stretch blow molding machine according to an embodiment of the present invention.

This injection stretch blow molding machine has a pair of tie rods 1 erected on a molding machine base 10 as shown in FIG.
An upper base 14 supported by the second base 2 is provided, and a rotary plate 16 as a rotary transfer member is provided on the lower surface side of the upper base 14 so as to be rotatable intermittently at a predetermined angle (for example, 90 degrees).

A neck mold support plate 20 composed of a split plate for supporting a plurality of (eight in this embodiment) neck molds 18 composed of split molds on the lower surface of the rotary plate 16 so that the molds can be opened and closed 90 from the center. A plurality of preforms or molded articles are arranged at four positions with a certain degree of space, and the plurality of preforms or molded products are supported by the plurality of neck molds 18 while the neck portions are supported by the rotation plate 16.
It can be driven intermittently at intervals of 0 degrees and can be stopped at four positions.

Further, the injection molding section 22 and the temperature control section 2 are respectively placed at the stop positions along the rotation conveyance locus of the preform or product held by the neck mold 18 by the rotary plate 16.
4, the stretch blow molding part 26 and the product take-out part 28 are arranged.

The injection molding part 22 includes a pair of tie rods 12.
A hot runner connected to the injection device 30, an injection cavity mold, and an injection lower mold clamping plate (not shown) are arranged in a position sandwiched between them, and below the rotary plate 16.
An injection movable plate 32 for raising and lowering an injection core mold (not shown) is provided above the upper base 14 so as to be movable up and down, and the injection cavity mold, the injection core mold, and the neck mold 18 are clamped to mold a preform. It is like this.

When the injection cavity mold and the injection core mold are clamped, a mold clamping force is obtained through the tie rod 12. This tie rod 12
Are erected just up to the width of the molding machine base 10, and the molding machine base 1
0 is set to be slightly wider than the distance between the tie rods 12.

The temperature control section 24 is disposed at a position where the rotary plate 16 is rotated by 90 degrees and stopped while the preform injection-molded by the injection molding section 22 is held by the neck mold 18. The temperature of the preform molded in the section 22 is adjusted to a temperature suitable for stretching, and a temperature control pot (not shown) for temperature control is provided on the molding machine table 10 located below the rotary plate 16. It is arranged.

In the stretch blow molding section 26, the rotary plate 16 is
The injection molding unit 22 is rotated at a position where the preform held by the neck mold 18 after being rotated by 0 degrees is stopped from being conveyed from the temperature control unit 24.
, A blow cavity type (not shown) is provided on the molding machine base 10 located below the rotary plate 16, and a blow core type (see FIG. A blow core unit 34 for raising and lowering (not shown) is arranged. Then, with the preform held in the neck mold 18 inserted, the blow cavity mold and the blow core mold are clamped, and blow air is introduced into the preform from the blow core mold to perform stretch blow molding to form the preform. It is formed into the shape of the product.

In the product take-out section 28, the product supported by the neck mold 18 is rotated and conveyed by 90 degrees from the stretch blow molding section 26 by the rotation of the rotary plate 16 and is stopped at a position facing the temperature adjusting section 24. A mold opening mechanism (not shown) for opening the neck mold supporting plate 20 and opening the neck mold 18 is arranged on the upper base 14 at that position.
With this mold opening mechanism, the neck part of the product is released from the neck mold 18. It should be noted that there is no mold or the like other than the neck mold 18 between the rotary plate 16 and the molding machine base 10 and it is in a spatial state.

As shown in FIGS. 1 to 3, the product take-out unit 28 is provided with a product take-out device 36 on the upper side wall of the molding machine table 10 at a position corresponding to the product take-out part 28. A product takeout conveyor 38 is disposed on the molding machine table 10 between the product takeout section 28 and the product takeout section 28.

In this way, the product take-out conveyor 38 does not project to the side of the molding machine table 10, and the product take-out section 28
Even when the product take-out device 36 is used to transfer the product to the product take-out conveyor 38, the stroke for the transfer of the product take-out device 36 can be shortened, and the product take-out device 36 can be made smaller accordingly. Thus, the injection stretch blow molding machine can be downsized and space saving can be realized.

The product take-out conveyor 38 is installed inside the product take-out device 36 installed on the side wall of the molding machine base 10, that is, at a position closer to the center side than the outer surface of the molding machine base 10. As a result, it is arranged at a position inside the maximum width of the molding machine base 10. Therefore, the product take-out conveyor 38 does not project to the outside of the maximum width of the molding machine table, and as a result, the product take-out device 36 can be disposed in the vicinity of the product take-out portion 28, and the product take-out device is accordingly. The stroke of 36 can be shortened to reduce the size, and the injection stretch blow molding machine can be reduced in size and space.

Further, the maximum width of the molding machine base 10 is determined by the distance between the pair of tie rods 12 for clamping the injection molding portion 22,
It depends on the upper base 14 supported by the tie rods 12 and further on the rotational transfer path of the rotary plate 16 that rotationally transfers the preforms and products. The spacing between the tie rods 12, the upper base 14 and the rotary plate 16 It is designed to be formed wider than the rotary transport locus. Therefore, the product take-out conveyor 38 is located on the molding machine table 10 and does not project to the outside of the molding machine table 10 and can effectively utilize the molding machine table 10.

In the product take-out section 28, the products supported by the neck mold 18 are arranged in parallel with the side wall of the molding machine table 10, and the molding machine table 10 directly below the molding machine table 10 is arranged.
2 and 3, the shooter 40 is provided, and the shooter 40 is in a state of being connected to the side surface from the upper surface position of the molding machine base 10 to mold a preform or defective molding product. It is designed so that it can be discharged outside the aircraft.

The product take-out conveyor 38 is arranged outside the shooter 40 and between the side wall of the molding machine table 10 and the conveying direction thereof is the arrangement direction of the products 90 in the product take-out section 36 (see FIGS. 1 and 2). (See) and is arranged in parallel.

In this way, by making the conveying direction of the product take-out conveyor 38 (see FIGS. 1 and 2) parallel to the arrangement direction of the products 90 in the product take-out section 28, the product take-out device 36 can detect the products 90. Since it is sufficient to convey and move the product 90 from the product unloading section 28 to the product unloading conveyor 38 as it is without changing the direction, the product unloading device 36 can have a simple configuration.

As shown in FIGS. 4 to 6, the product take-out device 36 moves forward and backward by moving horizontally with respect to the product take-out portion 28 on a mounting plate 42 attached to the upper side wall of the molding machine base 10. It comprises a means 46, an elevating means 48 which can be moved up and down on the forward and backward moving means 46, and a product holding means 50 attached to the elevating means 48. The forward / backward moving means 46 has a horizontal plate 52 and a vertical plate 54 provided upright on the horizontal plate 52, and the horizontal plate 52 is provided on the mounting plate 42 via a bearing 58. It is engaged and can be moved forward and backward along the horizontal guide rail 56 by the forward and backward drive cylinder 60.

The elevating means 48 has an elevating plate 64, and this elevating plate 64 engages with an elevating guide rail 62 disposed on the vertical plate 54 via a bearing 66, and an elevating drive cylinder 68 causes an elevating guide rail 68. 6
It is possible to go up and down along 2.

The product holding member 50 has a take-out arm 70 which projects in parallel to the product take-out portion 28 side from the elevating plate 64.
A support plate 72 is provided at the tip of the take-out arm 70 along the arrangement direction of the products 90, and a pair of suction members 74 are arranged vertically at positions corresponding to the products 90 on the support plate 72.

Further, the lifting means 48 has a product take-out section 28.
When the suction member 74 sucks and holds the product 90 in FIG.
First retracting means 80 is provided for retracting and retracting the product 90 to a position where it does not come into contact with. Furthermore, the forward / backward movement means 4
In FIG. 6, the product 90 is held by the suction member 74, and the suction member 74 is retracted and retracted to a position where the product 90 does not come into contact with the product 90 when the product 90 is transferred from the position of the product unloading section 28 to the product unloading conveyor 38. A second retracting means 82 is provided.

The first retracting means 80 is the take-out arm 7
The bearing 84 provided at 0 is engaged with the guide rail 78 provided on the elevating plate 64, and the extraction arm 70 is moved up and down by the first retracting drive cylinder 86, so that the suction member 74 can be moved up and down. .

The second retracting means 82 makes the take-out arm 70 extendable and retractable, and by making the take-out arm 70 extend and retract by the second retracting drive cylinder 88, the suction member 74 can be moved and retracted in the horizontal direction. I have to.

Next, an injection stretch blow molding method using the above-mentioned injection stretch blow molding machine will be described.

First, in the injection molding section 22, the neck mold 1
8, the injection core mold and the injection cavity mold are clamped, and the molten resin is injected from the injection device 30 into the mold to form a preform.

Next, the injection core mold is retracted from the rotary plate 16, the injection cavity mold is opened, and the rotary plate 16 is rotationally driven by the neck mold 18 while holding the neck portion of the preform to warm the preform. It is conveyed to the adjusting section 24.

In the temperature control section 24, the preform is inserted into the temperature control pot to control the temperature of the preform to a proper stretching temperature.

Next, the preform whose temperature has been adjusted to the appropriate temperature for stretching in the temperature control section 24 is taken out from the temperature control pot, and the rotary plate 16 is rotationally driven by the neck mold 18 while holding the preform, and the preform is stretch blow molded. It is conveyed to the section 26.

In the stretch blow molding section 26, the blow core unit 34 is lowered and the blow cavity mold is inserted into the preform held by the neck mold 18, and the blow cavity mold is clamped. Blow air is introduced to perform blow molding, and the preform is molded into the shape of the product 90.

Then, the blow cavity mold and the blow core mold are opened, and while the product blow-molded by the stretch blow molding unit 26 is held by the neck mold 18, the rotary plate 16 is driven to rotate and the product 90 is taken out. Transport to 28.

In the product take-out portion 28, the neck 90 of the product 90 is opened by opening the neck mold support plate 20 and the neck mold 18 by the mold opening mechanism to take out the product 90. It is supposed to be.

When the product 90 is taken out, it is selected by using various sensors whether the object to be carried carried by the rotary plate 16 is a defective product or a preform, or a good product 90. If the object to be conveyed is the defective molded product or the preform, it is dropped onto the shooter 40 provided directly below the rotating plate 16 and discharged to the outside through the discharge port formed on the side surface of the molding machine table 10. I have to. In this case, the quality of the preform or the defective molded product may be determined, and the product unloading device 36 may be stopped when the preform or the defective molded product is conveyed to the product unloading section 28.

When the object to be conveyed is a good product 90, the product unloading device 36 is used to transfer the product 90 to the product unloading conveyor 38 provided on the molding machine table 10 in an upright state. I am trying.

When the product is taken out by the product taking-out device 36, the product 90 is transferred to the product taking-out conveyor 38 in the process shown in FIG. First, at the retracted position of the forward / backward drive cylinder 60, the suction member 74 is raised to the upper limit position by driving the up / down drive cylinder 68 and the first retract drive cylinder 80. At this position, the suction member 74 is maintained at a height corresponding to the product holding position in the product unloading section 28.

Next, the forward / backward drive cylinder 60 and the second
The retracting drive cylinder 88 is driven to move the suction member 74 forward to the product take-out portion 28 side. With the forward / backward drive cylinder 68 and the second retraction drive cylinder 88 completely advanced, the suction member 74 horizontally moves to a position where it comes into contact with the product 90.

By suctioning the suction member 74 while the suction member 74 is in contact with the product 90, the suction member 74 is sucked onto the product 90 to hold the product 90 as shown in FIG. 7 (1). .

Next, with the product 90 held by the suction member 74, as shown in FIG. 7B, the mold opening mechanism is operated to open the neck mold 18, and the product 90 is held by the neck mold 18. Open up.

Next, the first retracting drive cylinder 86 is contracted, and as shown in FIG. 7C, the product 90 is retracted to the position where it does not contact the neck mold 18.

Next, at the position of the product take-out portion 28, the suction member 7
When the suction member 74 is moved backward by the driving of the forward / backward drive cylinder 60 while the product 90 is held by 4, the product 90 held by the suction member 74 moves horizontally at the retracted height position described above. As shown in (4), the product is conveyed to a position above the product take-out conveyor 38.

Next, when the suction member 74 is lowered by driving the lifting drive cylinder 68, the product 90 held by the suction member 74 is moved downward, and the bottom portion of the product 90 is moved to the product as shown in FIG. 7 (5). It is in a state of being positioned on or near the upper surface of the take-out conveyor 38. When suction on the suction member 74 is stopped in this state, the suction state of the product 90 by the suction member 74 is released, and the product 90 is transferred to the product take-out conveyor 38 in an upright state. In the standing state, the product take-out conveyor 38
Will be transported by. In this case, the suction member 7
After the suction state of the product 90 by 4 is released, the second retracting drive cylinder 88 is driven, and the suction member 74 is slightly retracted from the transport position of the product 90 by the product take-out conveyor 38. The product 90 does not come into contact with the suction member 74 and the product 90, and the product take-out conveyor 38
It will be transported over.

Then, with the product 90 molded by the next molding cycle being conveyed to the product unloading section 28,
By repeating the above steps, the upright conveyance of the product 90 can be reliably performed.

As described above, by transferring the product 90 to the product unloading conveyor 38 in the upright state, it is possible to easily and surely perform the subsequent processes such as the subsequent inspection of the product 90.

8 and 9 are views showing an injection stretch blow molding machine according to another embodiment of the present invention.

In this injection stretch blow molding machine, the forming machine base 10 corresponding to the product take-out portion 28 is cut out to form a recess 100 in the molding machine base 10 directly below the product take-out portion 28.

Then, the product take-out conveyor 38 is arranged on the side surface of the molding machine table 10 located in the recess 100 formed in the molding machine table 10 with the arrangement direction of the products 90 and the conveying direction thereof being parallel to each other. I am trying.

Further, the product take-out device 102 is arranged outside the product take-out conveyor 38 in the recess 100, and the product take-out device 102 is provided.
0 is taken out from the holding position by the neck mold 18 onto the product take-out conveyor 38 and conveyed.

The product take-out device 102 includes a chuck member 104 for holding the product 90 and the chuck member 104.
Elevating means 106 for moving the product 90 from the holding position of the neck mold 18 to the position on the product take-out conveyor 38.
And a forward / backward moving unit 108 for moving the chuck member 104 forward and backward with respect to the grip position of the product 90. Then, with the chuck member 104 retracted by the forward / backward moving unit 108, the chuck member 10 is moved by the lifting / lowering unit 106.
4 is lifted to the holding position of the product 90 by the neck mold 18, and at that position, the chuck member 1 is moved by the forward / backward moving means 108.
04 is moved forward to hold the product 90, the chuck member 104 is lowered as it is by the elevating means 106 to release the gripped state of the product 90 by the chuck member 104, and the product 90 is transferred onto the product take-out conveyor 38. The chuck member 104 is moved backward by the forward / backward moving means 108.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the gist of the present invention.

For example, in the above-mentioned embodiment, the case where the upper base and the rotating plate are provided on the molding machine table has been described, but the present invention is not limited to this example, and the upper base and the rotating plate are not used. The same can be applied to the case where the preform or the product is conveyed by a rotating arm or the like.

Further, although the one having the temperature adjusting section after the injection molding section has been described, the temperature adjusting section is not necessarily required.

Further, although the suction type is used as the product holding member of the product take-out device, the present invention is not limited to this example, and a zipper type or other holding means can be freely adopted.

Further, in the above embodiment, the arrangement direction of the products in the product take-out section is parallel to the side surface of the molding machine base, and the product take-out device is provided on the side surface of the molding machine stand to provide the product in the product take-out section. The arrangement direction and the product take-out device are arranged in parallel, but the arrangement direction is not limited to this side.
When the product arranging direction of the product unloading section and the side surface of the molding machine base are not parallel to each other as shown in Japanese Patent Publication No. 211, the product unloading apparatus is complicated if the product unloading device is provided on the side surface of the molding machine base. Therefore, the product take-out device may be provided on the molding machine base.

Further, although the product take-out conveyor is provided in parallel with the product arranging direction of the product take-out portion at the product take-out position, the line should be bent at a position other than this take-out position, for example, behind the conveyor line. Can be done freely.

Further, in the above-described embodiment, an example is shown in which the shooter is provided immediately below the product take-out section and the product take-out conveyor is provided outside thereof, but the product take-out conveyor is provided directly below the product take-out section without providing the shooter. May be provided.

[0098]

As described above, according to the first invention, in the injection stretch blow molding machine, by disposing the product take-out conveyor at the position corresponding to the product take-out section on the molding machine table, The product take-out conveyor does not project to the side of the molding machine base, saving space. Furthermore, when attempting to transfer the product from the product unloading section to the product unloading conveyor by using the product unloading device, the product unloading device may be used to move the product from the product unloading section even if it is located outside the product unloading conveyor. Since the stroke for transferring and transferring the product to the take-out conveyor can be shortened, there is an effect that it can contribute to space saving of the injection stretch blow molding machine.

According to the second aspect of the present invention, in the injection stretch blow molding machine, the product take-out conveyor is provided at a position inside the molding machine base maximum width, so that the product take-out conveyor is smaller than the molding machine base maximum width. Space saving is achieved without protruding to the outside. Further, even when the product is transferred from the product unloading section to the product unloading conveyor by using the product unloading apparatus, the product unloading apparatus can be arranged close to the product unloading section, and as a result, the product unloading section can be installed. The product transfer stroke from the product to the product take-out conveyor can be shortened, the product take-out device can be downsized accordingly, and the injection stretch blow molding machine can be downsized overall to save space. effective.

According to the third and fourth aspects, the maximum width of the molding machine base is wider than the interval between the tie rods for clamping the injection molding section, or wider than the upper base supported by the tie rods. As a result, the maximum width of the molding machine base becomes approximately the maximum width of the molding machine, and therefore by providing the product takeout conveyor inside the maximum width of the molding machine,
There is an effect that space saving of the molding machine can be realized.

Further, when the product take-out conveyor is installed on the molding machine table, the product take-out conveyor does not project outward beyond the maximum width of the molding machine table, and the product is always inside the molding machine table maximum width. Even if the unloading conveyor is installed and the product unloading device is installed outside it, the product transfer stroke of the product unloading device can be shortened. There is an effect that the molding machine can be downsized and space saving can be achieved.

According to the fifth aspect of the present invention, in the injection stretch blow molding machine, the product take-out conveyer is arranged at the position corresponding to the product take-out portion at the outer periphery of the upper base or at the position inside the rotational locus of the rotary conveying member. As a result, regardless of the state of the molding machine table, the product take-out conveyor does not project outward from the outer circumference of the upper base or the rotation trajectory of the rotary transport plate, and space can be saved. Furthermore, even when the product take-out device is installed outside the product take-out conveyor, the transfer transition stroke from the product take-out part of the product take-out device to the product take-out conveyor can be shortened, resulting in a compact product take-out device. As a result, there is an effect that the injection stretch blow molding machine can be downsized and the space can be saved.

According to the sixth aspect of the invention, in the injection stretch blow molding machine, a product take-out device is installed on the side wall of the molding machine base at a position corresponding to the product take-out part, and the product take-out device and the product take-out part are connected to each other. By arranging the product take-out conveyor in between, the product take-out device only needs to have a stroke that reciprocates between the product take-out part and the product take-out conveyor, and the product take-out device can be downsized, resulting in injection stretching. There is an effect that the blow molding machine can be downsized to save space.

According to the seventh invention, by arranging the product arranging direction in the product unloading section and the product transporting direction of the product unloading conveyor in parallel, the product unloading device can be constructed without using a complicated mechanism, There is an effect that the transfer from the product unloading section to the product unloading conveyor can be performed with a simple configuration.

According to the eighth aspect of the present invention, in the injection stretch blow molding machine, by disposing the shooter for discharging the preform or defective molding product on the molding machine table at the product take-out position, In addition to taking out the product by the take-out conveyor, there is an effect that the preform or defective molding product can be easily and surely discharged from the shooter.

According to the ninth invention, in the injection stretch blow molding machine, the product holding means of the product taking-out device holds the product at the product taking-out portion position, and the forward / backward moving means makes the product take-out portion corresponding position and the product take-out position. By moving the product holding means horizontally to the position corresponding to the take-out conveyor and moving the product holding means up and down from the height position of the product take-out section to the height position of the product take-out conveyor by the elevating means, the product is taken out of the product take-out section. There is an effect that the transfer can be surely transferred to the product takeout conveyor.

According to the tenth aspect of the invention, in the injection stretch blow molding machine, the product is lowered and retracted to the position where the product carrying / holding member provided on the rotary carrying member of the product take-out device does not come into contact with the product. By providing the comparing means, it is possible to prevent the product holding means and the product from coming into contact with each other when the product holding part holds the product at the product take-out position, without affecting the operation of the rotary carrying member. The effect is that the product can be reliably taken out.

According to the eleventh aspect of the present invention, the product take-out conveyor is disposed from the molding machine base by disposing the product take-out conveyor in the recess immediately below the product take-out part formed by cutting out the part corresponding to the product take-out part of the molding machine base. It can be installed without protruding to the outside, the size of the injection stretch blow molding machine can be reduced, and the product take-out conveyor is located directly below the product take-out section, so the product take-out only moves up and down. The effect is that it can be done.

According to the twelfth aspect of the present invention, in the injection stretch blow molding method, the product that has been rotationally transferred is held down and retracted to a position where it does not come into contact with the transport holding member, and at that position the product take-out conveyor. The horizontal movement of the product from the product take-out section to the product take-out conveyor can be affected by moving the product horizontally from the product take-out conveyor to the product take-out conveyor and moving the product downward to the product take-up conveyor. In addition, there is an effect that they can be aligned in an upright state, and that post-processes such as product inspection after the molded product can be reliably performed.

According to the thirteenth aspect of the present invention, in the injection stretch blow molding method, when the object to be conveyed conveyed by the rotary conveying member is selected and the object to be conveyed is a defective molding product or a preform. In order to ensure that only good products are discharged, a shooter provided directly below the rotary conveyance member discharges them, and if they are good products, the product take-out device is used to convey and transfer them to the product take-out conveyor in an upright state. There is an effect that the product can be transferred to the product take-out conveyor and the product can be easily and surely selected.

[0111]

[Brief description of drawings]

FIG. 1 is a plan view of an injection stretch blow molding machine according to an embodiment of the present invention.

FIG. 2 is a front view of the injection stretch blow molding machine of FIG.

FIG. 3 is a partial side view showing a part of a molding machine base of the injection stretch blow molding machine as seen from the direction III in FIG.

FIG. 4 is a plan view of the product takeout device shown in FIGS. 1 to 3.

5 is a front view of the product takeout device of FIG. 4. FIG.

6 is a side view of the product dispensing device of FIGS. 4 and 5. FIG.

7 (1) to (5) are diagrams showing a product transfer state from a product unloading unit position by a product unloading device to a product unloading conveyor.

FIG. 8 is a schematic plan view showing an injection stretch blow molding machine according to another embodiment of the present invention.

9 is a side view of the injection stretch blow molding machine of FIG.

[Explanation of symbols]

 10 Molding Machine Base 12 Tie Rod 14 Upper Substrate 16 Rotating Plate 18 Neck Mold 22 Injection Molding Section 24 Temperature Control Section 26 Stretch Blow Molding Section 28 Product Extraction Part 36 Product Extraction Device 38 Product Extraction Conveyor 40 Shooter 46 Forward / Reverse Means 48 Lifting Means 50 Product holding means 74 Adsorption member 80 First retracting means 82 Second retracting means 90 Product 100 Recess

Claims (13)

[Claims] 1. A rotary conveyance member rotatably supported above a molding machine table for conveying a preform or a product, and at least a preform molding provided along a rotation trajectory of the rotary conveyance member on the molding machine table. Injection molding blow molding machine comprising an injection molding section for molding, a stretch blow molding section for molding this preform into a product shape, and a product unloading section for taking out a product molded by the stretch blow molding section, on the molding machine base. An injection stretch blow molding machine characterized in that a product takeout conveyor is arranged at a position corresponding to the product takeout section. 2. A rotary conveying member that is rotatably supported above the molding machine table and that conveys a preform or a product, and at least a preform molding that is arranged along a rotation path of the rotary conveyance member on the molding machine table. An injection stretch blow molding machine comprising an injection molding section for molding, a stretch blow molding section for molding this preform into a product shape, and a product unloading section for taking out a product molded by the stretch blow molding section, wherein An injection stretch blow molding machine, characterized in that a product take-out conveyor is provided at a position more inside than substantially. 3. The injection stretch blow molding machine according to claim 2, wherein the maximum width of the molding machine base is wider than the distance between the tie rods for clamping the injection molding section. 4. The molding machine according to claim 2, further comprising: an upper base supported by a tie rod for clamping a mold of an injection molding section which is erected on the molding machine base on the upper surface side of the rotary conveyance member. An injection stretch blow molding machine, wherein the maximum width is wider than the width of the upper base. 5. An upper base supported by a tie rod standing upright on a molding machine base, a rotary conveyance member rotatably supported on a lower surface side of the upper base for conveying a preform or a product, and the molding machine base. At least an injection molding part for preform molding, which is arranged along the rotation track of the outer periphery of the upper rotary conveying member, a stretch blow molding part for molding this preform into a product shape, and a product molded by the stretch blow molding part. In an injection stretch blow molding machine having a product take-out section for taking out a product take-out conveyor, the product take-out conveyor is arranged at a position inside the outer circumference of the upper base at the product take-out section corresponding position or the rotation locus of the rotary conveying member. Characteristic injection stretch blow molding machine. 6. A rotary conveying member that is rotatably supported above the molding machine table and conveys a preform or a product, and at least a preform molding that is arranged along the rotation trajectory of the rotary conveying member on the molding machine table. Injection molding blow molding machine including an injection molding section for molding, a stretch blow molding section for molding this preform into a product shape, and a product takeout section for taking out a product molded by the stretch blow molding section, the product takeout section corresponding position An injection stretch blow molding machine characterized in that a product take-out device is installed on the side wall of the molding machine table, and a product take-out conveyor is arranged between the product take-out device and the product take-out part. 7. The injection stretch blow molding machine according to claim 6, wherein the product arranging direction in the product unloading section and the product transporting direction of the product unloading conveyor are provided in parallel. 8. The injection stretch blow molding machine according to claim 6, wherein a shooter for discharging a preform or a defective molded product is provided on the molding machine stand at the product take-out position. 9. An upper base supported by a tie rod erected on a molding machine stand, and a rotary transfer for rotatably supported on a lower surface side of the upper base to hold and transfer a preform or a product by a transfer holding member. A member, at least an injection molding part for preform molding arranged along the rotation trajectory of the outer periphery of the rotary conveying member on the molding machine stand, a stretch blow molding part for stretching the preform into a product shape, and a stretch blow molding process. A product take-out section for taking out the product molded by the molding section, a product take-out apparatus installed on the side wall of the molding machine table at a position corresponding to the product take-out section, and arranged between the product take-out apparatus and the product take-out section. And a product take-out conveyor, wherein the product take-out device holds the product at the product position held by the transport holding member in the product take-out section, and takes out the product onto the product take-out conveyor. Product holding means for holding, a forward / backward moving means for horizontally moving the product holding means between the product position of the product taking-out portion and a product taking-out conveyor corresponding position, a height position of the product taking-out portion and a product taking-out conveyor And an elevating means for elevating and lowering the product holding means with respect to the height position of the injection stretch blow molding machine. 10. The product conveying / holding member, which is provided on the rotary conveying member when the product holding unit holds the product at the product unloading position, is a product holding / holding member for the product. An injection stretch blow molding machine comprising a retracting means for lowering and retracting a product to a position where it does not abut. 11. A rotary conveying member that is rotatably supported above a molding machine table and conveys a preform or a product, and at least a preform molding that is arranged along a rotation trajectory of the rotary conveying member on the molding machine table. Injection molding blow molding machine having an injection molding section for molding, a stretch blow molding section for molding this preform into a product shape, and a product unloading section for taking out a product formed by the stretch blow molding section, the product of the molding machine base. An injection stretch blow molding machine characterized in that a portion corresponding to the take-out portion is cut out to form a concave portion, and a product take-out conveyor is arranged in the concave portion immediately below the product take-out portion. 12. The preform or the product is used as a rotary conveying member in at least the injection molding process of the preform, the stretch blow molding process of molding the preform into a product shape, and the product unloading process of taking out the product molded by the stretch blow molding. In an injection stretch blow molding method for carrying out a 1-cycle molding process by holding the provided carrier holding member and rotating and carrying the product, the product unloading process includes a step of holding the rotationally transferred product by a product holding means, and a product A step of lowering and retracting the product held by the holding means to a position where it does not come into contact with the transport holding member; and taking out the product from the retracted position of the product on the molding machine table or inside the maximum width of the molding machine table. Horizontally moving to a position above the conveyor, and from the position above the product take-out conveyor to above the product take-out conveyor Injection stretch blow molding method characterized by comprising the step of shifting the product on a upright state on the product take-out conveyor is lowered moving the goods, the. 13. A preform or a product is used as a rotary conveying member in at least a preform injection molding step, a stretch blow molding step of molding the preform into a product shape, and a product unloading step of taking out a product molded by the stretch blow molding. In the injection stretch blow molding method in which a molding process of one cycle is performed by holding the provided carrier holding member and rotating and carrying the product, in the product unloading process, the object to be carried carried by the rotary carrying member is a defective product. Or preform or good product, and if the object to be conveyed is the defective molding product or preform, it is discharged by the shooter provided directly below the rotary conveying member, and the object to be conveyed is If the product is a good product, use the product take-out device to place the product on the molding machine base or inside the maximum width of the molding machine base. Injection stretch blow molding process, characterized in that to convey shifted to the product removal conveyor which is provided with upright state.