JPH0796337A - Press parts feeder - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention significantly improves productivity by punching a stamping raw material and continuously performing positioning and conveying to the next process so as not to cause material loss of the obtained work. To provide a press component supply device capable of obtaining the above. [Structure] The press raw material a put in the input position A of the index table 1 is indexed and moved to the punching position B, punched by a punching press device 10 provided therein, and divided into a work W and a scrap s. To do. The transfer arm body 5 receives and holds the work from the punching press device, and while being positioned, transfers the work to the work unloading position D and releases the work. The scrap separated from the work is in the scrap discharge position C.
It is discharged to the outside by the discharge conveyor 23 provided in the.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press parts feeding apparatus for punching and pressing a brittle thin plate raw material, separating it into a work and a scrap, and positioning and taking out the work.

[0002]

2. Description of the Related Art Generally, as punching press means for thin plates, a press box is used to take out a bulk into a collection box through a component chute, a pushback system in which parts are punched and then integrated with a material, and a punching press is used. There is a method to remove unnecessary parts. The above-mentioned means is most suitable for the application to a solid material represented by a metal material.

[0003]

However, for example, in the case of a brittle press raw material obtained by coating powder,
When press-down or push-back is performed after punching, material loss easily occurs at the corners and ridges of the obtained workpiece.

Further, in order to supply the punched work to the next process in a positioned state, manpower is required or another process is required, which lacks continuity of production and makes it difficult to increase the production tact. There is a situation.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to continuously supply a brittle press raw material by punching and supplying it without causing material loss of the obtained work. Then, the present invention is to provide a press part supply device which can perform positioning and conveyance to the next process and can obtain a great improvement in productivity.

[0006]

In order to achieve the above object, the present invention is provided with a predetermined position along the periphery of the index table, and has a loading position, a punching position, a scrap discharging position and a work unloading position. Rotate so as to sequentially face the position, punch the press raw material that is loaded and conveyed at the loading position to the punching position, divide it into necessary work and unnecessary scrap, and leave the scrap on the index table. A punching press device that detachably engages only the work is installed, and the punching press device is detached by inserting the work held by the punching press device and the scrap left on the index table into the index table. Accept the work to be done,
In a state of being positioned, a work transfer means is provided for transferring the work to the work discharge position through the scrap discharge position, and releasing the work to take out the work.
It is a press part supply device characterized by comprising a scrap discharging means for discharging scrap separated from a work to the outside at a scrap discharging position.

[0007]

[Function] Even if the raw press material is brittle, punching without material loss is performed, and the positioning and conveying to the next process is continuously performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show the present press component supply device. In the figure, reference numeral 1 denotes an index table, which is intermittently rotated by 90 ° by a drive source housed therein, and the work described later is automatically performed during each stop time. .

In FIG. 1, a predetermined position of the index table 1, that is, a position A is called a loading position, a position B is called a punching position, a position C is called a scrap discharging position, and a position D is called a work unloading position.

A positioning chuck 2 is provided on the upper surface of the index table 1. The positioning chuck 2 is openable and closable, and at the loading position A, the press raw material a to be punched is received and is conveyed as it is with the rotation of the index table 1.

As shown in FIG. 3A, the press raw material a is made of a brittle rectangular thin plate portion b and a rigid wire rod c integrally provided only on one side of the thin plate portion b. Consists of. In other words, the thin plate portion b having brittleness is supported by the wire c.

As shown in FIG. 1B, the press raw material a
The punching is performed so as to obtain a rectangular work W while leaving the peripheral edge portion of. As shown in FIG. 6C, scrap s after punching the work W from the press raw material a remains.

As shown in FIGS. 1 and 2 again, a positioning guide 3 is provided along the peripheral edge of the index table 1 at the same position as the positioning chuck 2.
A transfer arm body 5 that constitutes the work transfer means 4 is provided along the radial direction of the table 1.

The transfer arm body 5 has a pair of arms 6 and 6 having a pivoting support portion on the center side of the index table 1. One end of the arm 6 on the side of the pivoting support portion is placed on the end of the other arm 6 and is in a state of being always overlapped.

Only the end portions of the arms 6 and 6 on the circumferential end side of the table 1 face each other in the receiving pieces 6a and 6a.
Are provided integrally. Further, only one of the arms 6 is provided with a roller 7 in the vicinity of the pivotal support, and a part of the roller 7 projects from the side edge of the arm 6. Although not illustrated here, the arm 6 provided with the roller 7 has an urging body that elastically urges the end of the other arm 6 without the roller 7 to contact.

From this, the roller 7 is mounted on the table 1
By urging the arms 6 and 6 in the radial direction, the arms 6 and 6 rotate about the rotation pivotal support portions, and as a result, the receiving piece portions 6 respectively.
a is separated from each other and the arms 6 and 6 are fan-shaped, or the receiving piece portions 6a are close to each other so that the arms 6 and 6 are parallel to each other.

A cam 8 is provided at the center of rotation of the index table 1. The cam 8 is connected to a drive source other than the rotation source of the index table 1, and is driven in the forward and reverse directions within a predetermined range.

Then, at any angle, the position is set so as to be in rolling contact with the roller 7 provided on each transport arm body 5 as the index table 1 rotates. However, as shown only in FIG. 1, it projects in the radial direction so as to extend from substantially the insertion position A to the punching position B, and the other portion has a perfect circular shape.

From this, at the position immediately before the index table 1 is rotated and the transport arm body 5 reaches the loading position A, the roller 8 provided on the transport arm body 5 is radially moved by the cam 8 by the cam 8. The arms 6 and 6 are urged to project, and the arms 6 and 6 spread out in a fan shape.

Further, in the transfer arm body 5 located at the scrap discharge position C and the work discharge position D, the roller 7 rolls in contact with the perfect circle of the cam 8, so that the roller 7 retreats in the radial direction, and thus each arm. Deform so that 6 and 6 are parallel.

As described above, here, the four sets of arm transfer bodies 5 ... And the cam 8 provided at the central portion of the index table 1 constitute the work transfer means 4. The punching press device 10 is opposed to the punching position B.
Will be deployed. This comprises a fixed lower mold 11 and an upper mold 12 which is connected to an unillustrated lifting drive source to be driven up and down and brought into a pressurized state when lowered.

FIG. 4 shows a schematic structure of the lower mold 11 and the upper mold 12. Here, the lower mold 11 has this position B
It is designed to support the press raw material a that is transferred up to, and its supporting surface is formed in the size and shape of the work W to be punched.

The upper mold 12 is composed of a knockout 13 whose outer shape is the same as that of the lower mold 11, and a die 14 which is fitted around the knockout 13 in a loosely fitted state.

The knockout 13 is projected from the base 15 by a plurality of compression springs 16 ... And in the space 17 between the base 15 and the upper surface of the knockout 13,
Compressed air is introduced and filled through the conducting path 18 provided in the die 14.

Further, here, a pair of vacuum evacuation conduits 19, 19 are connected to the knockout 13 and communicate with the suction grooves 20, 20 provided on the lower surface side thereof. A seal structure for preventing air leakage is adopted for the vacuum evacuation lines 19 and 19.

As shown in FIGS. 4 and 5, the suction grooves 20, 20 on the lower surface of the knockout 13 are symmetrically provided, and have a rectangular shape. As shown by hatching in the drawings,
Sagging is performed along the lower surface side peripheral edge.

Further, a step portion 21 is integrally provided in a part of the suction groove 20 at a position adjacent to each other in this case. The height dimension h of the step portion 21 with respect to the depth dimension H of the suction groove 20.
Is required to be about half, and at least half or more of the area of the stepped portion 21 with respect to the suction groove 20 must be secured. However, the opening position of the vacuum evacuation conduit 19 is always set to the bottom surface of the suction groove 20.

Referring again to FIGS. 1 and 2, 22
Has an edge between the work unloading position D and the loading position A and another edge between the punching position B and the scrap discharging position C, and has the same curvature as the peripheral end of the index table 1. It is a lower plate for receiving that is curved.

The receiving lower plate 22 is fixed to the lower surface of the index table 1 so as to be in sliding contact when the table 1 is indexed. That is, the press raw material a and the positioning chuck 2 put into the opening of the table 1
, But cannot be supported at a portion without the lower plate 22.

A discharge conveyor 23, which is a scrap discharge means, is provided opposite to the scrap discharge position C. The discharge conveyor 23 is extended to a portion immediately below the discharge position C, and receives the discharged matter and conveys it to a predetermined portion such as a trash can.

A work take-out mechanism (not shown) is provided immediately above the work carry-out position D. The work W located at this position D is vacuum-sucked by, for example, a suction nozzle, pulled up, and conveyed to a predetermined site.

Next, the operation of the press component supply device thus constructed will be described. As shown in FIG. 7A, the press raw material a is the index table 1
At the time of stop, the arms 6 and 6 are put into the opening position A in the expanded state and positioned by the positioning chuck 2. At this position, since the receiving lower plate 22 is located below the press raw material a, it does not drop.

When the insertion into the insertion position A is confirmed, the index table 1 is indexed by 90 °. That is, the press raw material a is slid on the receiving lower plate 22 and is conveyed to the punching position B in the same posture.

Next, the punching press device 10 is driven, and with respect to the press raw material a supported on the lower die 11,
The upper die 12 descends and press punching is performed. Specifically, the knockout 13 first projected by the compression spring 16
Comes into contact with the press raw material a on the lower mold 11. At this time, already through the conduction path 18 provided in the die 14,
Compressed air may be supplied to the space 17 between the knockout 13 and the base 15.

Then, the base 15 and the die 14 descend and make sliding contact with the peripheral surface of the knockout 13. The compressed air filled in the space 17 between the base 15 and the knockout 13 is further compressed as the capacity of the space 17 is reduced, and the knockout 13 and the die 14 are in a loose state. It spouts to the outside through the gap.

The lowering of the base 15 and the die 14 is continued, the lower end surface of the die 14 is aligned with the lower end surface of the knockout 13, and the die 14 is continuously lowered, whereby the lower die 1
The press raw material a is punched with 1.

That is, the work W that is in close contact with the lower surface of the knockout 13 and the scrap s left on the lower mold 11 are separated. The evacuation line 19 starts the evacuation action at a timing. Since the work W closes the opening surface of the suction groove 20 formed in the knockout 13, the work W is vacuum-sucked to the lower surface of the knockout 13.

Since the work W is made of a brittle material, the work W may be vacuum-sucked by the knockout 13 to bite the periphery of the suction groove 20 into the work W and leave a trace. .

However, since the sagging is performed along the lower surface side edge of the suction groove 20, no trace of the shape of the suction groove 20 remains on the work W. Further, since the work W is brittle, there is a possibility that the work W is originally attracted to the inside of the suction groove 20 and deformed under the influence of the vacuum pressure.

However, since the step portion 21 is integrally provided in the suction groove 20 and protrudes to the lower surface side, even if there is such a deformation, the step W receives the work W which deforms, and further. Prevent the deformation of.

Further, since the stepped portion 21 is only provided in a part of the suction groove 20, the volume of the groove 20 necessary for vacuuming the work W is sufficiently secured, and the suction action does not occur. There is no problem.

Further, when the die 14 descends and press punches, the compressed air filled in the space 17 between the knockout 13 and the base 15 continues from the gap between the knockout 13 and the die 14. Gush out.

Dust generated from the raw press material a at the time of punching is not blown away by the compressed air, and does not enter the gap between the knockout 13 and the die 14 or block it. For a long period of time, the relative movement between the knockout 13 and the die 14 is reliably maintained,
Highly reliable.

As shown in FIG. 7 (B), the upper die 12 that has adsorbed the work W while leaving the scrap s on the index table 1 side rises. This time, the cam 8 rotates about 40 ° in the counterclockwise direction in FIG. Therefore, in the transfer arm body 5 located at the punching position B, the roller 7 provided therein changes the contact position with the cam 8 into a perfect circle portion, and the arms 6 and 6 in the expanded state are parallel. Change to.

That is, the scrap s left on the index table 1 and the work W adsorbed on the upper die 12.
The receiving piece portions 6a, 6a of the arms 6, 6 are interposed between and.

Then, in the upper die 12, the vacuum drawing for the work W is stopped and the work W is peeled off from here. In order to perform this operation reliably, compressed air may be sent to the evacuation line 19. The work W, which has been sucked up to that point, falls and both end portions thereof are supported by the receiving piece portions 6a, 6a. That is, the work W is transferred to the transfer arm body 5 located at the same position B.

After confirming this operation, the index table 1 is indexed. The transfer arm body 5 that supports the work W is located at the scrap discharge position C. In the meantime, as shown in FIG. 7C, the arms 6 and 6 position the workpiece W to be supported in the longitudinal direction (EF direction). At the same time, the positioning guide 3 provided at the peripheral edge of the table 1 faces one side edge of the work W, prevents the work W from jumping out due to the centrifugal force associated with the index of the table 1, and is different from the longitudinal direction. Positioning is performed in the orthogonal direction (GH direction).

On the other hand, as shown in FIG. 1, the cam 8 rotates clockwise by the same angle and returns to the original state. If the receiving lower plate 22 does not exist at a position before the scrap s reaches the scrap discharge position C and reaches the same position C, the positioning chuck 2 is opened by a biasing mechanism (not shown). Therefore, only the scrap s falls, is placed on the discharge conveyor 23, and is conveyed and discharged to the outside.

The index table 1 is driven again,
The work unloading position D is indexed. The work discharge mechanism operates to take out the work W that has been accurately positioned and convey it to a predetermined position.

In this way, the work W is punched out from the press raw material a, the remaining scrap s is discharged, the work W is positioned and then taken out. By adopting the configuration as in the present invention, there is no material loss at the corners or both wire portions of the work by adopting the conventional push-down method after punching or punching, and the conventional problem is solved. Can be achieved.

The index table 1 continues to perform the indexing operation even after the series of operations for the press raw material a loaded at the loading position A is completed at the work unloading position D.

Immediately before the transfer arm body 5 from which the work W has been taken out is positioned at the loading position A again, the roller 7 is urged by the cam 8 and the arms 6 and 6 return to the original expanded state. Then, it again waits for the introduction of a new press raw material a.

Since all the operations, that is, material feeding, press punching, scrap separation and punching work positioning can be performed by one index table 1,
The production speed will be faster and the connection with the next process will be easier.

In the above embodiment, the component supply to the work W of brittle material has been described, but the present invention is not limited to this, and any work W that can be adsorbed to the upper die 12 of the punching press device 10 can be used. If there is no problem in material characteristics.

Although the cam 8 is used to rotate the arms 6 and 6, the invention is not limited to this. For example, an air cylinder or another drive source may be used.

A knockout 13A as shown in FIGS. 8A and 8B may be used. This external dimension does not change at all, and the suction groove 20 provided on the lower surface portion
The size and shape of may be the same as those described above.

However, the shape of the stepped portion 21A is different. In this case, a concavo-convex shape continuous in the width direction of the knockout 13A is formed. Here, both sides and the central portion are concave, and the space between them is convex.

The depth dimension H of the suction groove 20 and the height dimension h of the step portion 21A are the same. Therefore, even if the press raw material a is brittle, the stepped portion 2 is generated when the work W is adsorbed.
1A has substantially the same function as that of the above embodiment.

A knockout 13B as shown in FIGS. 9A and 9B may be used. Here, the suction groove 20B provided on the lower surface has a circular shape.
A step portion 21B having a concentric circle shape with 0B is provided. The depth dimension H of the suction groove 20B and the height dimension h of the step portion 21B are
There is no change. Therefore, the brittle press raw material a
However, when the work W is adsorbed, the stepped portion 21B has substantially the same function as that of the above embodiment.

[0060]

As described above, according to the present invention, the press raw material put into the feeding position of the index table is punched by the punching press device provided at the punching position and divided into the work and the scrap. Holds the work from the punching press device, and while being positioned, conveys the work to the work unloading position and releases the work.

Since the scrap separated from the work is discharged to the outside by the scrap discharging means provided at the scrap discharging position, for example, the material of the work obtained under the condition of punching and supplying the brittle press raw material. Positioning and carrying can be continuously performed in the next process so as not to cause a defect, and the productivity can be greatly improved.

[Brief description of drawings]

FIG. 1 is a plan view of a press component supply device showing an embodiment of the present invention.

FIG. 2 is a side view of the press component supply device according to the embodiment.

FIG. 3A is a plan view of a press raw material to be punched. (B) is a plan view of the obtained work. (C) is a plan view of the scrap excluding the work.

FIG. 4 is a partial vertical cross-sectional view of an upper die and a lower die of the press punching device according to the embodiment.

FIG. 5 is a bottom view of a knockout that constitutes the upper mold of the embodiment.

FIG. 6 is a perspective view showing the knockout bottom side of the embodiment as an upper part.

FIG. 7A is a perspective view showing a state where a press raw material is put in at a feeding position. FIG. 6B is a perspective view showing a work suction state in the punching position. (C) is
The perspective view of the state which started the index from the punching position to the scrap discharge position.

FIG. 8 is a longitudinal sectional view of a knockout according to another embodiment.

FIG. 9 is a bottom view of the knockout according to the embodiment.

FIG. 10 is a longitudinal sectional view of a knockout according to still another embodiment.

FIG. 11 is a bottom view of the knockout according to the embodiment.

[Explanation of Codes] 1 ... Index table, a ... Original press material, W ... Work, s ... Scrap, 10 ... Punching press device, 4
... Work transfer means, 23 ... Scrap discharge means.

Claims (1)

[Claims] 1. An index table, which is provided along a peripheral edge thereof at predetermined intervals and has a feeding position, a punching position, a scrap discharging position, and a work unloading position, and which is rotated so as to sequentially face each position, and the punching. The press raw material, which is placed in the position and is loaded into the index table at the loading position and conveyed to the punching position by the index of the index table, is punched and divided into the necessary work and unnecessary scrap, and the scrap is indexed into the index table. A punching press device that detachably retains only the work that remains, and a work that is provided on the index table and that is retained by the punching press device and scrap that remains on the index table. Then, the punching press device receives and positions the work to be detached, and in a state where the work is positioned, the work is conveyed through the scrap discharge position to the work discharge position, where the work is released and can be taken out freely. A press component supply device, comprising: a scrap discharge device that is provided at a position and discharges scrap separated from the work from the position to the outside.