JPS61199552A - Core housing jig circulation type automatic core supplying device - Google Patents

Abstract

PURPOSE:To make possible the automatic housing of many kinds of cores by providing a conveyor for core housing jigs, a core presetter for transferring the core housing jigs into a core housing device and an empty jig taking-out device. CONSTITUTION:The core housing jig 3 contg. the core 2 is carried into the prescribed position by the conveyor. The jig 3 is held by the core presetter 9 in tight contact with each other and is rotated 90 deg. by a pressurized gas while the attitude of the core 2 is maintained. The jig 3 is then transferred to the vacuum suction type core housing device 27. The device 27 which holds the jig 3 and sucks and holds the core 2 therein makes the prescribed motion to house the core 2 into a casting mold and returns to the home position thereafter. The jig 3 from which the core 2 is removed is then taken out by the empty jig taking-out device 48 and is returned to the prescribed position 3a1. One cycle is completed by a series of such operations. The core housing jig makes one round along such cycle and arrives at the prescribed position where the jig is recovered.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention supplies a core and a core holding jig to a vacuum suction type core holding device used in a vertical molding machine, and also supplies a mold This invention relates to a core storing jig circulation type automatic core supplying device which takes out and recovers the core storing jig from which the core has been taken out from the core storing device after the core storing is completed.

[Conventional technology]

Traditionally, cores are used to create cavities or holes in cast products. A core holding device is used to set the core in the mold. Recently, a core-storing jig that matches the work-in-progress product being molded is installed in this core-storing device, and the core is set in this core-storing jig.

As a method for setting the core, either a manual method (Tal) or a method in which the core is automatically set and doubled using a core feeding device (BL) has been adopted.

[Problem that the invention seeks to solve]

However, in the case of method (a), there is a problem in that when a large number of cores are inserted at one time, the working time becomes long, and as a result, the cycle time is extended.

Furthermore, in the case of the method (bl), it is necessary to change the middle child feeding device when changing the work in progress.

For this reason, there is a problem in that it is extremely difficult to deal with many types of devices.

Furthermore, both the method (al) and the method (bl) require replacement of the core holding jig at the time of stage change, and at this time there is a problem that temporary stoppage of the molding machine is unavoidable.

Further, conventionally, there has been no means for automatically recovering the core holding jig from which the core has been taken out.

Therefore, it is possible to automatically supply cores to many types of work-in-progress products without stopping the molding machine during setup changes, and it is also possible to collect empty core storage jigs. The development of an automatic child feeding device was desired.

[Means for solving problems]

The above-mentioned problem is solved by the core storing jig circulating type automatic core feeding device of the present invention, which will be described below.

That is, the core storing jig circulation type automatic core feeding device of the present invention supplies cores and core storing jigs to a vacuum suction type core storing device used in a vertical molding machine, and , a core storing jig circulation type automatic core supplying device which takes out and recovers the core storing jig from which the core has been taken out from the core storing device after completion of placing the core into the mold; A transport device transports the core holding jig containing the core into the core presetting device, and the core holding jig is brought into close contact with a rotatable pressure head, and pressurizes the inside to adjust the core posture. A core presetting device that rotates at a predetermined angle while maintaining the same condition and passes the core placing jig to the core placing device, and a core holding jig that is passed from this core presetting device is gripped and the core is sucked. A core storage device that stores the core in a mold while holding it, and an empty jig removal device that receives the empty core storage jig from the core storage device after the core storage is completed and returns it to a predetermined position. It is characterized by having the following.

[Effect]

According to the automatic core feeding device of the present invention, first, the core storing jig containing the cores is carried to a predetermined position by the conveying device. Therefore, the core holding jig is held in close contact with the core presetting device, rotated 90 degrees with the core posture maintained by pressurized gas, and delivered to the vacuum suction type core holding device. The core accommodating device, which holds the core accommodating jig and suction-supports the internal core, performs a predetermined operation to accommodate the core in the mold, and then returns to its original position. Thereafter, the core holding jig (hereinafter referred to as an empty jig) from which the core has been removed is taken out by an empty jig removal device and returned to a predetermined position.

One cycle is completed by this series of operations.

Along this cycle, the core holding jig goes around once and is recovered to a predetermined position.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

Here, FIG. 1 is a plan view showing the entire core storage jig circulating type automatic core feeding device according to an embodiment of the present invention, and FIG.
Figure 3 is an enlarged view of section A in Figure 2, Figure 4 is a cross-sectional view taken along IV-IV in Figure 1, and Figure 5 is a cross-sectional view taken along line V-V in Figure 1. It is a diagram.

FIG. 1 shows an automatic core feeding device consisting of a core conveyance device, a core briscent device, a core storage device, and an empty jig removal device. 1 and 5, reference numeral 1 denotes a first roller conveyor that carries in a core storage jig 3 with a core 2 set therein from outside the apparatus. A second roller conveyor 4 extending in the same direction as the first roller conveyor 1 and for returning empty jigs is provided at a predetermined height from the floor 5. A first roller-equipped table 6 is provided at the input end of the first roller conveyor 1, and is placed on the same surface as the first roller conveyor 1 and on the traversing roller conveyor 8 by an elevating device 7. The core storage jig 3 can be raised and lowered to a level where it can be moved horizontally. On one side (lower side in FIG. 3) orthogonal to this first table with rollers 6, a core storage jig 3 mounted on a traversal roller conveyor 8 is placed on the first roller conveyor l.
An extrusion device 10 is provided to be inserted into a core presetting device 9 provided on the opposite side of the core. This extrusion device 10 has a core conveying device that is composed of an extrusion head 11 having a shape that matches the side surface of the core storage jig 3, and a linear actuator 12 that drives this extrusion head 11. It is formed.

The core briscent device 9 is housed in a rectangular frame 13 having a roof-like top. As shown in FIG. 4, a second roller-equipped table 14 is provided below within the frame 13, guided by a guide member 15, and movable up and down by a linear actuator 16. At this time,
The lowering end of the second table with rollers 14 is at the same level as the traverse roller conveyor 8. A shaft 17 is horizontally suspended in the upper part of the frame 13, which corresponds to the ridge of the roof.
It is rotatably supported by bearings 18 at both ends. This bearing 18 is connected to the rotary actuator 2 via a shaft joint 19.
Connected to 0. A pressure head 21 is attached to this shaft 17.
is hanging. As shown in FIG. 3, this pressure head 21 is in close contact with the outer periphery of the core holding jig 3, and
This pressurizing head 21, which has a pressurizing space 22 inside and has a so-called box shape with one end open, is partially open and has a piping joint 23 attached thereto.

This piping joint 23 is connected to a pressurized gas supply source (not shown) via a flexible hose 24. Further, a gripping means 25 for fixing the core holding jig 3 is attached to the side surface of the pressure head 21. In addition, on the back side of the core storage jig 3 where the core 2 is stored, there is a suction hole 2 that communicates with the outside.
6 is provided.

In this core presetting device 9, a core holding device 27 is provided near the position where the pressure head 21 is rotated 90 degrees. As shown in FIG. 4, this core accommodating device 27 is guided by a guide rod 51 and moves between a core preset position and a core accommodating position C in a vertical mold. Note that this core holding device 27 is of a vacuum suction type, and its configuration is the same as that of a conventional device, so a detailed explanation will be omitted.

An empty jig removal device for removing an empty jig (core storage jig) 3 containing a core 2 in a mold is shown in FIGS. 4 and 1. In FIG. 4, 28 is a U-shaped frame, which has an opening that can hold the empty jig 3 in a vertical position. A pair of claws 29 for holding the empty jig 3 are provided inside the tip of the U-shaped frame 28. This claw 29 is guided by a guide member 30 and is movable forward and backward by a linear actuator 31. This U-shaped frame 28 is the axis 3
The shaft 32 is rotatably supported by a bearing 33 and rotatable by a rotary actuator 34. The bearing 33 is integrated with the frame 35, and is enabled to move in small strokes by means of two guide rods 36 and a linear actuator (not shown). The two guide rods 36 are supported and fixed to a frame 37. This frame 37 enables horizontal movement of the U-shaped frame 28 to the empty jig 3 by means of two guide rods 38 and a linear actuator 39.

Note that the guide rod 3B is fixed by a seat 40.41.

A jig receiving table 42 on which the empty jig 3 is placed is provided next to the exited position of the U-shaped frame 28.

As shown in FIGS. 4 and 5, this jig receiving table 42 consists of four parallel links 46 attached to a bearing frame 43 and connected at one end to a drive shaft 45 driven by a rotary actuator 44. It is connected to the tip via a link pin 47.

Furthermore, on the end side of the second roller conveyor 4, an empty jig 3 is provided.
An empty jig extrusion device 48 is provided for transporting the jig out of the apparatus. This empty jig extrusion device 48 consists of an extrusion head 49 and a linear actuator 50.

Next, the operation will be explained.

For convenience of explanation, the positions of the core holding jigs (empty jigs) 3 are shown with symbols a1 to all in accordance with the movement order of the core holding jigs 3.

The core 2 to be placed in the mold is set in a core holding jig 3 outside the apparatus. At this time, in order to stabilize the core 2, the core storing jig 3 is tilted by 90 degrees from the posture at the time of storing the core. The core storage jig 3 in which the core 2 is set is carried on the first roller conveyor 1 to a position a, as shown in FIGS. 1 and 5.

In this state, as shown in FIG. 4, the first roller table 6 is raised. The core storage jig 3 is carried onto the first table with rollers 6 by a conveying means (not shown). The position of the core storage jig 3 at this time is indicated by a2.0 Next, the first table 6 with rollers is lowered, and the core storage jig 3 is placed on the traverse roller conveyor 8. Subsequently, the extrusion device 10 is activated, and the extrusion pad 11 moves the core holding jig 3 to a position a in the core presetting device 9.

, that is, to the position above the second roller table 14. Thereafter, the extrusion head 11 of the extrusion device 10 is retreated to the retreat end to prepare for the next cycle.

When the core storage jig 3 is placed on the second table with rollers 14, the second table with rollers 14 is raised to the position a4 by the linear actuator 16, as shown in FIGS. 2 and 4. . As a result, the core holding jig 3 comes into close contact with the pressure head 21. In this state, as shown in FIG.
The core housing jig 3 and the pressure pad 21 are fastened together. After the fastening is completed, the linear actuator 16 lowers the second roller table 14 to the same level as the traverse roller conveyor 8. Simultaneously with the lowering of the second table with rollers 14, pressure is applied from a pressurized gas supply source (not shown) via the flexible hose 24 and piping joint 23 to the pressure head 21 and the core holding jig 3. Compressed air is supplied into the space 22.

The core storage jig 3 is provided with a plurality of suction holes 26 from the back in the part where the core 2 is set.In this state, the suction holes 26 are open to the atmosphere, so the core 2 has ( A pressing force corresponding to (total area of suction holes) x (applied pressure - atmospheric pressure) acts. Therefore, even if the core accommodating jig 3 is tilted or moved, the core 2 will not fall off from the core accommodating jig 3.

While in this pressurized state, as shown in FIG. 2, the pressurizing head 21 is rotated 90 degrees by the rotary actuator 20.
Tilt the core holding jig 3 to position a. As a result, the core storing jig 3 is placed in a vertical state in which the core can be stored. At this time, the core holding device 27 is not holding the core holding jig 3 and is waiting at position b as shown in FIG. 4, and the core holding jig 3 is at position a. When it arrives at , it moves forward and comes into close contact with the back of the core holding jig 3. Next, the core storing device 27 and the core storing jig 3 are fastened together by a gripping means (not shown) built into the core storing device 27. At the same time, the gripping means attached to the pressurizing rod 21 releases its grip on the core holding jig 3.

In parallel with these series of operations, the suction of the core storing device 27 is started from the time when the core storing device 27 and the core storing jig 3 come into close contact with each other. After this state is maintained until the suction force reaches a steady state, the pressurization from the pressure head 21 is stopped. By the above-described operations, the presetting of the core 2 and the core holding jig 3 into the core holding device 27 is completed. Thereafter, the core-setting device 27 moves from b to C, where it performs the well-known core-setting process.

After the core storing is completed, the empty jig (core storing jig) 3 is returned to the position ah by the core storing device 27. At this time, the U-shaped frame 28 of the empty jig take-out device has moved forward to the position d shown by the imaginary line in FIG. 4, and pinches the empty jig 3, which has returned to the position ah, from above and below. That is, the claws 29 are moved forward by the linear actuator 31 to clamp the empty jig 3. Thereafter, by releasing the grip of the gripping means built into the core holding device 27, the empty jig 3 becomes free from the core holding device 27. Subsequently, the frame 35 is moved by the two guide rods 36 by a linear actuator (not shown).
The empty jig 3 is moved a short distance along the axis to move it to the position a7, and is separated from the core holding device 27.

Next, the linear actuator 39 is operated to move all the members such as the U-shaped frame 28 on the guide rod 38 backward, and the empty jig 3 is taken out to the position a8. At this backward end, the rotary actuator 34 is actuated to tilt the U-shaped frame 28 by 90 degrees as shown in FIG. As a result, the empty jig 3 moves to the position a9 and becomes horizontal. In this position, the empty jig 3 and the jig receiving table 42 are in a positional relationship in contact with each other, and by releasing the grip of the claws 29 of the U-shaped frame 28, the empty jig 3 is moved onto the jig receiving table 42. Thereafter, the U-shaped frame 28 is tilted in preparation for the next cycle.

Next, by operating the rotary actuator 44, the parallel link 46 is driven to move the empty jig 3 onto the second roller conveyor 4. move it to the position. Second roller conveyor'? The empty jig 3 placed on the hollow jig 4 is pushed by the empty jig extrusion device 48, moves on the second roller conveyor 4, and is recovered to the core center work area.

By repeating the above cycle, the cores can be continuously placed in the mold while circulating the core placement jig.

As is clear from the above, the automatic core feeding device of this embodiment can be applied even when the shapes and number of cores are different, and therefore it is possible to automatically feed many types of cores, reducing cycle time. It has an excellent shortening effect.

Furthermore, since there is no need to change the core for each type of core, it is possible to eliminate the time lost due to the change of the core.

Furthermore, when presetting the core in the core placement device, the core in the core placement jig can be pressed with compressed air to stabilize its posture, making it possible to use robots for core setting work, etc. automation becomes easier.

Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, but includes various embodiments within the scope of the claims.

[Effects of the Invention] As described above, the automatic core feeding device of the present invention provides the following effects.

(a) If the shape and size of the core holding jig are determined in advance, it can be applied even if the shape and number of cores are different. Therefore, it is possible to automatically store many types of cores, and the cycle time is shortened.

(b) The core holding device and the core presetting device can be used universally even if the shape and size of the core changes, so there is no need to change the setup for each type of core. Therefore, lost time due to stage change can be eliminated.

(c) When setting the core in the core presetting device, the core is placed in the core holding jig in advance, so the influence of the number of inserts is eliminated, and the core is set in the core presetting device. Time is reduced.

(d) During presetting, the core in the core holding jig can be pressed with pressurized gas to stabilize its posture, making it easy to automate the core setting work.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the entire automatic core supply device with a core storage jig circulating type according to an embodiment of the present invention, and FIG. 2 is a plan view showing the n--
3 is an enlarged view of part A in FIG. 2, FIG. 4 is a sectional view taken along line IV-n in FIG. 1, and FIG. 5 is a sectional view taken along line V-V in FIG. 1. 1.-----1.First roller conveyor 2--.
... Core 3 --- Core storage jig (empty jig) 9 --- Core presetting device 21 --- Pressure head 27 --- Core storage Device 28 - U-shaped frame Applicant: Toyota Motor Corporation Figure 1 Figure 2 Figure 1 Ri Figure 3 Figure 4

Claims (1)

[Claims] (1) Supplying cores and core storage jigs to the vacuum suction type core storage device used in vertical molding machines, and
A core storing jig circulating type automatic core supplying device which takes out and recovers the core storing jig from which the core has been taken out from the core storing device after the completion of putting the core into the mold, A transport device transports the loaded core storage jig into the core presetting device, and the core storage jig is brought into close contact with a rotatable pressure head and pressurized inside to maintain the core posture. a core presetting device that rotates at a predetermined angle in the state in which the core accommodating jig is delivered to the core accommodating device; and a core presetting device that grips the core accommodating jig passed from the core presetting device and holds the core by suction. A core storage device that stores the core into the mold in a state in which the core has been placed, and an empty jig removal device that receives the empty core storage jig from the core storage device and returns it to a predetermined position. A core storage jig circulation type automatic core supply device characterized by having the following features: