JPH0459318A - Vertical insert injection molding machine - Google Patents

Abstract

PURPOSE:To stabilize feed of an insert material by making a possessory space small, by a method wherein the insert materials are piled up and held by a material feed magazine by adopting a Cardan mechanism. CONSTITUTION:Since a Cardan mechanism is used for a loader 1 and unloader 3, a feed hand 5 and taking-out hand 6 can be inverted by 180 deg. while moving them almost linearly. The loader 1 and unloader 3 can be approached easily to a top and bottom forces 23, 24 without being hindered by a tie rod 25. Therefore, working sphere of the loader 1 and unloader 3 can be made small and a possessory space of the whole of a molding machine can be made small. Then since insert materials 4 are piled up and held by a material feed magazine 10, the insert materials can be fed to the top and bottom forces 23, 24 by the loader 1 in one time positioning. Along with miniaturization of a holding area, feed of the insert material 4 can be stabilized and working efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an injection molding machine for plastics, etc.
Regarding a vertical insert injection molding machine.

(Prior Art) Conventional vertical insert injection molding machines are known that are equipped with a loader that supplies insert material to a mold and an unloader that takes out a molded product from the mold. Generally, in a vertical insert injection molding machine, the mold is guided, clamped, and opened by multiple tie rods that extend vertically at predetermined intervals in the circumferential direction, so the loader and unloader move in a straight line avoiding the tie rods. It is necessary to supply insert material to the mold and take out the molded product from the mold.

Therefore, in addition to a turning mechanism, the loader and unloader are equipped with an air cylinder or the like for expanding and contracting the node at the tip of the loader to avoid tie openings and knots. Also,
A plurality of insert materials are laid flat on a magazine in the material supply section, and each time the insert material is supplied, the magazine is moved to position it at a predetermined position, and the insert material is supplied to the mold by a loader.

(Problems to be Solved by the Invention) However, in conventional vertical insert injection molding machines, the tips of the loader and unloader are configured to expand and contract using air cylinders, so when the loader and unloader rotate, these members The problem was that the operating area of the machine was very large, and the space occupied by the entire molding machine was large.

In addition, since the insert material is positioned at a predetermined position and fed into the mold each time it is fed, there are problems in that the feeding of the material becomes unstable and work efficiency decreases.

Therefore, the present invention uses a cardan mechanism to configure a loader and an unloader, and also stores insert materials in a stacked manner and stores molded products side by side in an upright state, thereby improving work efficiency and improving the molding machine. The challenge is to reduce the overall space occupied.

Note that the Cardan mechanism itself is a known mechanism that is generally used as a mechanism for driving the arm of a robot, etc.
It is described in the publication No.-244475.

(Means for Solving the Problems) In order to solve the above problems, a vertical insert injection molding machine according to the present invention is an insert injection molding machine equipped with a loader and an unloader using a Cardan mechanism. A rotary table for placing a magazine for material supply is installed in the unloader, and a moving table for placing and moving a magazine for receiving molded products is installed in the unloader operating area. The plate-shaped insert materials are stacked and stored, and the molded product receiving magazine stores a plurality of molded products side by side in an upright state.

(Function) In the present invention, the operating area of the loader and unloader is reduced by adopting the Cardan mechanism, and the material supply magazine stacks and stores the insert materials, so that the insert materials are placed in the mold by the loader with - degree positioning. The molded products that are supplied and taken out from the mold by the unloader are stored in a magazine for receiving molded products side by side in an upright state.

(Example) Hereinafter, the present invention will be explained based on the drawings.

1 to 4 are diagrams showing an embodiment of a vertical insert injection molding machine according to the present invention.

First, the configuration will be explained.

In FIGS. 1 to 4, 1 is a loader equipped with a cardan mechanism, and the loader 1 is provided on the material supply side of the molding machine main body 2. 3 is an unloader equipped with a cardan mechanism, and the unloader 3 is provided on the molded product take-out side of the molding machine main body 2. The loader 1 has a plate-shaped insert material 4 (second
The supply hand 5 is capable of suctioning and supporting a sample (see figure), and the supply hand 5 is sequentially moved and reversed by 180 degrees as shown by the imaginary line in FIG. 3 by a Cardan mechanism. The loader 1 also includes a vertical drive mechanism 1a that can move the supply hand 5 up and down. The unloader 3 has a take-out hand 6;
, similarly to the supply hand 5, is moved by the Cardan mechanism and reversed by 180°.

Further, the unloader 3 has a vertical drive mechanism 38 that can move the take-out hand 6 up and down, and a stage 7 that can move it in the direction of arrow A in FIG. The extraction hand 6 has a gripping part 6a that can swing between positions shown in the imaginary line on the right side of FIG. 4, and the gripping part 6a can support the molded product 8 by holding it therebetween.

Here, a rotating mounting table 9 is disposed within the operating area of the loader 1, that is, near one end side of the movable range of the supply hand 5, and the rotating mounting table 9 is connected to a pair of material supplying magazines I.
O is mounted so as to be axially symmetrical with respect to the center of rotation. The material supply magazine 10 stores a plurality of plate-shaped insert materials 4 in a stacked state, and the uppermost insert material 4 stored in the material supply magazine 10 located on the lower side of FIG. 2 is a preloader. 11 and placed thereon. The Buri loader 11 includes a T-shaped hand 12, a rotating shaft 13, a multiple sheet suction discrimination sensor 14, a cylinder 15, a light emitter 16, a light receiver 17, an arm 18 for multiple sheet suction and removal, a support stand 19, a shaft 20, etc. There is (
(See Figure 1). The T-shaped hand 12 is the material supply magazine 1
The uppermost insert material 4 stored in the insert material 64 is sucked and rotated around the rotation shaft 13 in the sucked state.
can be placed horizontally on the support stand 19.

The multiple sheet adsorption discrimination sensor 14 is composed of a proximity switch, which is driven downward by a cylinder 15, contacts the insert material 4 placed on the support base 19 at a predetermined contact position, and detects the thickness of the insert material. By this, it is determined whether multiple insert materials 4 are being attracted. Emitter 16 and receiver 1
Reference numeral 7 detects the position of the uppermost insert material 4 in the material supply magazine 10. Based on this detection result, an elevator for raising and lowering the magazine (not shown) is controlled so that the horizontal level of the insert material in the uppermost stage is always constant, and the operation timing of the cylinder 15 and the loader 2 is determined. There is. When the multiple sheet suction/removal arm 18 detects multiple sheet suction of the insert material 4 by the multiple sheet suction discrimination sensor 14, the arm 18 rotates upward in FIG. Drop material 4 downward. A storage box (not shown) or the like is installed at the point where the insert material 4 falls.

On the other hand, a moving table 21 is disposed within the operating area of the unloader 3, that is, near one end of the movable range of the unloading hand 6. The moving table 21 is driven by a ball screw or the like, and can place three molded product receiving magazines 22 thereon and move them in the direction of arrow B in FIG. 2. The molded product receiving magazine 22 has, for example, a plurality of partition plates, and can store a plurality of molded products 8 in an upright state in the direction of arrow C in FIG. 4.

Reference numerals 23 and 24 denote an upper mold and a lower mold, respectively, and the upper and lower molds 23 and 24 define a cavity for forming a molded product. The upper mold 23 is guided by tie rods 25 (see FIG. 1), approaches the lower mold 23 and moves away from the lower mold 24, and then closes and opens the mold. These mold clamping, mold opening mechanisms, and injection mechanisms such as a molten resin injection nozzle are well known, and therefore, illustrations and explanations showing their configurations and operations will be omitted. In addition, since the cardan mechanism of the loader 1 and unloader 3, the suction mechanism of the supply hand 5 and T-shaped hand 12, the gripping mechanism of the gripping part 6a of the extraction hand 6, etc., are known, detailed descriptions thereof will not be provided. Similarly to the above, illustrations and explanations showing the configuration and operation will be omitted.

In addition, 26 is an operation panel of the buri loader 11, and 27 is an operation panel of the moving table 21 (see FIG. 2).

Next, the effect will be explained.

First, the rotary mounting table 9 is driven to rotate, and the material supply magazine 10 containing a plurality of insert materials 4 is positioned at the lower supply position in FIG. be done.

Next, the T-shaped hand 12 rotates and the insert material 4 is placed on the support base 19.

Next, the supply hand 5 is driven by the operation of the Cardan mechanism and the vertical drive mechanism 1a of the loader 1 to approach the insert material 4 on the support base 19, and the insert material 4 is attracted to the supply hand 5. Next, the supply hand 5 is driven by the operation of the Cardan mechanism and the vertical drive mechanism 1a, moves to a predetermined position above the lower mold 24, approaches the lower mold 24, and the suction of the supply hand 5 is released. The insert material 4 is placed at a predetermined position on the lower mold 24, and the supply hand 5 is retracted to the initial position.

Next, the upper mold 23 and the lower mold 24 are clamped, and after the cavity containing the insert material 4 is injected and filled with molten resin, the molds are cooled and opened.

Next, the cardan mechanism of the unloader 3 and the vertical drive mechanism 3
a and the operation of the stage 7, the take-out hand 6 is driven to approach the molded product 8 on the lower mold 24, and the molded product 8 is gripped by the grip portion 6a of the take-out hand 6. Then,
The take-out hand 6 is rotated 180° by the drive of the Cardan mechanism, and moved to a predetermined position on the molded product receiving magazine 10 by the drive of the stage 7, and the grip part 6a of the take-out hand 6 is further rotated downward. . Next, by the operation of the vertical drive mechanism 3a, the take-out hand 6 is driven and moved downward, the gripping force of the grip part 6a is released, and the molded product is stored in an upright position at a predetermined position in the magazine 22 for receiving the molded product. Ru. This prevents the molded products 8 from being overlapped and coming into contact with each other and causing damage.

By repeating the above operations, molded products 8 are molded one after another and stored in the molded product receiving magazine 22. In addition,
When the insert material 4 stored in the material supply magazine 10 runs out, the rotary mounting table 9 is driven to rotate, and the full material supply magazine 10 placed on the other side of the rotary mounting table 9 is brought to the supply position. The empty material supply magazine 10 is then replaced with a full one. Also, when the molded product receiving magazine 22 becomes full, the moving table 21 moves and the adjacent empty molded product receiving magazine 22 moves to the receiving position, and the full molded product receiving magazine 22 is moved to the empty molded product receiving magazine 22. It is designed to be replaced as appropriate.

As mentioned above, in this embodiment, the cardan mechanism is used for the loader l and the unloader 3, so the supply hand 5 and the take-out hand 6 are moved almost linearly while the 18
It can be reversed by 0°, and the loader 1 and unloader 3 can be easily approached to the upper and lower molds 23 and 24 without being obstructed by the tie rods 25. Therefore, compared to the conventional molding machine that uses an air cylinder or the like, the operating area of the loader 1 and the unloader 3 can be made smaller, and the space occupied by the entire molding machine can be made smaller.

Moreover, since the material supply magazine 10 stores the insert materials 4 in a stacked manner, the insert materials 4 are
The upper and lower molds 2 are loaded by the loader L via the buri loader 11.
3.24 and multiple insert materials 4
Compared to the conventional one in which the insert material 4 is placed horizontally, the storage area can be reduced and the supply of the insert material 4 can be stabilized, and work efficiency can be improved.

In addition, since the material supply magazine 10 is placed on the rotary mounting table 9, by placing a plurality of magazines on the rotary mounting table 9, by simply rotating the rotary mounting table 9, empty The magazine can be smoothly replaced with a full one, improving work efficiency.

Further, since the insert material 4 can be moved almost linearly by the loader 1, an inspection stage, a material cleaning stage, etc. can be installed on the movement line of the insert material 4 without increasing the overall space.

In addition, the molded products 8 taken out from the upper and lower molds 23 and 24 by the unloader 3 are stored in the magazine for receiving molded products side by side in an upright state, which reduces the storage area and improves work efficiency. can be improved.

Furthermore, since the molded product receiving magazine 22 is placed on the moving table 21, by placing a plurality of magazines on the moving table 21, a full magazine can be emptied simply by moving the moving table 21. It can be replaced smoothly with another one, improving work efficiency.

(Effects) According to the present invention, since the cardan mechanism is used for the loader and unloader, the operating area of the loader and unloader can be made small (especially for a vertical injection molding machine). Space can be reduced.

In addition, since the material supply magazine stores the insert materials in a stacked manner, the insert material can be supplied to the mold by the loader by positioning the insert material 4 in degrees, stabilizing the supply of the insert material 4 and improving work efficiency. can do.

[Brief explanation of drawings]

1 to 4 are views showing an embodiment of a vertical insert injection molding machine according to the present invention, in which FIG. 1 is a front view thereof, FIG. 2 is a top view thereof, and FIG. 3 is an operation of its loader. FIG. 4 is an enlarged front view for explaining the operation of the unloader. 1... Loader, 3... Unloader, 4... Insert material, 8... Molded product, 9... Rotating mounting table, 10... Material supply magazine, 21...
・Moving table, 22...Magazine for receiving molded products. agent

Claims (1)

[Claims] In an insert injection molding machine equipped with a loader and an unloader using a cardan mechanism, a rotating mounting table for placing a magazine for supplying material is provided in the operating area of the loader, and a magazine for receiving molded products is installed in the operating area of the unloader. The material supply magazine stores multiple plate-shaped insert materials in a stacked state, and the molded product receiving magazine stores multiple molded products in an upright position. A vertical insert injection molding machine that can be stored side by side.