JPH09108751A - Transfer device for transfer press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transfer device being able to compactly make a transfer press having plural numbers of slides. SOLUTION: A 2nd driving pin 21 is provided between a fulcrum pin 18 and a 1st driving pin 20 on a lever 19 connected to a link 23 with the 1st driving pin 20, and one end of the link 23 is connected with the fulcrum pin 18 provided on a frame 7A of an amplifier 7 and other end is connected to a 2nd slider 15 with a driven pin 24. The stroke length S1 of a 2nd feed bar 9A is amplified against the standard stroke length S2 of a 1st feed bar 9A due to the lever ratio of the length E1 between the fulcrum pin 18 of the lever 19 swinging on the fulcrum pin 18 and the length E2 between the fulcrum 18 and the 1st driving pin 20 through the 1st feed bar 9A which is connected to the 1st slider 12 and which operates the standard stroke length S1 with a driving means of a transfer unit 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a field in which a feed bar of a transfer device of a transfer press having a plurality of slides is divided and each feed bar has a stroke length in a different feed direction.

[0002]

2. Description of the Related Art A feed bar of a transfer device of a transfer press having a plurality of slides is integrally formed without being divided, or even if divided, adjacent feed bars are integrated with each other, or via an auxiliary feed bar. Was formed. Therefore, the stroke length of the feed bar in the feed direction was the same for each slide portion.

[0003]

Of the various shapes of parts to be worked by press work, the parts mainly for drawing work, especially for large deformation work such as deep drawing or deep U-bending work, are processed. The plane dimensions of the parts before and after processing differ greatly. When such parts are processed by a transfer press having a plurality of slides, the first slide performs the large deformation processing, and the second slide performs a processing step after the large deformation processing. The stroke length S1 is set to be longer than the dimension of the component before machining so that there is no hindrance to the transportation and machining of the component.

Here, the size of the first slide in the feed direction of the transfer press is L1, the number of working steps of the first slide is N1, and the second slide in the feed direction of the transfer press is second.
If the size of the slide is L2 and the number of processing steps of the second slide is N2, this large stroke length S1 in the feed direction of the feed bar (in other words, this length becomes the pitch of each processing step) In this case, the size L1 of the first slide and the size L2 of the second slide in the feed direction of the transfer press are determined on the basis of, respectively, L1 = S1 × N1 L2 = S1 × N2.

However, in the processing step N1 of the first slide until the large deformation processing is completed, the stroke length S1 is set to a length that does not hinder the conveyance and processing of the parts before the processing, and the parts after the processing of the first slide are processed. In the conveyance and the further processing step N2, if the short stroke length S2 is based on the dimension of the component after the processing of the first slide, the size L3 of the first slide and the size of the second slide in the feed direction of the transfer press are set. The length L4 is determined on the basis of L3 = S1 × N1 and L4 = S2 × N2, respectively.

As is clear from the above description, since the sizes L1 and L3 of the first slide are equal to each other, the basic dimensions of the first slide are the same, and S1 (long stroke length) is S2 ( Since the stroke length is shorter), the size L2 of the second slide is larger than L4,
Therefore, when compared with a transfer press having the same total working steps (N1 + N2), the conventional technology is a transfer press having a large second slide by L2-L4 = (S1-S2) * N2.

An object of the present invention is to provide a transfer device capable of downsizing a transfer press having a plurality of slides, excluding the above-mentioned drawbacks.

[0008]

In order to achieve the above-mentioned object, the present invention provides a transfer press having a plurality of slides, each slide being provided with a feed bar for conveying a processed part, and feeding the feed bar. Stroke length of the feed bar that can drive the reference feed bar by the directional drive and change the stroke length of the adjacent feed bar by using a lever or a rack and pinion between the reference feed bar and the adjacent feed bar. Amplification device is installed.

[0009]

1 to 5 show an embodiment of the present invention. In this embodiment, a three-dimensional transfer press having two slides will be described.

1 to 4 show a first embodiment of the present invention. As shown in FIG. 1, a first slide 5A guided by a left column 4A and a middle column 4B, a middle column 4B and a right column 4C. The transfer press 1 having the second slide 5B guided to the column includes the clamp units 6A, 6B, 6B and 6C having the lift means for the feed bars 9B and 9A on the columns 4A, 4B and 4C and the bed of the middle column 4B. Three
An amplification device 7 for increasing the stroke length S1 of the second feed bar 9B on the first slide 5A side is provided above the reference stroke length S2 of the first feed bar 9A on the second slide 5B side. ing.

Further, on the bed 3 of the right column 4C, a clamp / unclamp of the second feed bar 9A on the second slide 5B side is provided via a vertical axis 10 from a drive source (not shown) in the crown 2. In addition, a transfer unit 8 having a driving means (not shown) for driving the advance / return feed bar operation is provided.

In the present embodiment, the mechanism of the clamp / unclamp and the drive means for the advance return / lift feed bar operation is based on a known technique, and a description thereof will be omitted.

As shown in FIGS. 2 and 3, the work (not shown) fed by a feeding means (not shown) from either the front or rear of the left column 4A or the left is subjected to large deformation processing. In the process of processing the first slide 5A, the process is performed by the fingers (not shown) of the second feed bar 9B having a long stroke length (S1), and the dimension of the component after the processing of the first slide 5A is used as a reference. In the processing step of the second slide 5B, while being conveyed from the left column 4A side to the right column 4C side by fingers (not shown) provided on the first feed bar 9A having a short stroke length (S2),
It presses with the metal mold | die (not shown) provided in the 1st bolster 11A and the 1st slide 5A, and the 2nd bolster 11B and the 2nd slide 5B, respectively.

On the side of the second slide 5B of the amplification device 7 provided on the bed 3 of the middle column 4B portion, the first guide rod 13 provided on the frame 7A of the amplification device 7 guides in the feed direction of the feed bar. A first slider 12 is provided, and an upper portion of the first slider 12 has a first slider pin 1 that is connected to a first feed bar 9A that operates a reference stroke length S1 by a drive unit of a transfer unit 8.
4 is provided slidably.

On the side of the first slide 5A of the amplifying device 7, a second slider 15 guided in the feed bar feed direction by a second guide rod 16 provided on the frame 7A.
Is provided on the second slider 15, and the amplification device 7 is provided.
The second slider pin 17 connected to the second feed bar 9B that operates the stroke length S2 amplified by is slidably provided.

The first slider 12 and the second slider 15
Between them, one end is connected by a fulcrum pin 18 provided on the frame 7A of the amplification device 7, and the other end is connected by a first driving pin 20 and a link 23 that is connected to the second slider 15 by a driven pin 24. To provide. Fulcrum pin 1 of this lever 19
8 and the second drive pin 21 between the first drive pin 20,
A first slider 12 that is connected to the first slider 12 and operates the reference stroke length S1 by the driving means of the transfer unit 8.
The lever 19 is swung via the fulcrum pin 18 as a fulcrum via the feed bar 9A.

The length E1 between the fulcrum pin 18 and the second drive pin 21 of the swinging lever 19 and the fulcrum pin 18 and the first
Due to the lever ratio with the length E2 between the drive pins 20, the stroke length S1 of the second feed bar 9B is amplified with respect to the reference stroke length S2 of the first feed bar 9A.

FIG. 5 shows a second embodiment of the present invention. A first slider pin 14 that connects the first feed bar 9A that operates the reference stroke length S1 by the driving means of the transfer unit 8 is provided in the upper part, and is guided by the first guide rod 13 provided in the frame 37A of the amplification device 37. The first slider 32 which is provided on the upper side
The first feed bar 9A is connected to and the driving means of the transfer unit 8 operates the reference stroke length S2.

A lever 33 having one end connected to the first slider 32 by a pin 30 is provided below the first slider 32.
At the other end of the lever 33, a first gear 40 and a second gear 41 having different gear ratios are coaxially and rotatably connected by a pin 34.

When the first slider 32 operates the reference stroke length S2 by the drive means of the transfer unit 8, the first gear 40 moves the frame 37A of the amplifying device 37.
It rotates while meshing with the first rack 38 provided on the
The second gear 41 meshing with the second rack 39 fixed to the lower part of the slider 35 rotates in the same manner as the first gear 40, and the second feed bar 9B connected to the second slider pin 17 provided on the second slider 35 is connected to the second feed bar 9B. , The first gear 40 and the second gear 4 with respect to the reference stroke length S2 of the first feed bar 9A.
It operates by amplifying the stroke length by a gear ratio of 1.

In this embodiment, the number of slides is two, but it is also possible to use a combination with an amplifying device in a transfer press having a plurality of slides of three or more. It goes without saying that the stroke length of the bar can be amplified.

[0022]

As is apparent from the above description, according to the present invention, it is possible to provide a transfer device capable of downsizing a transfer press having a plurality of slides.

[Brief description of the drawings]

FIG. 1 is a front view of a transfer press according to an embodiment of the present invention.

FIG. 2 is a state diagram of the return end of the feed bar according to the first embodiment of the present invention.

[Figure 3] Similarly, the state diagram of the advanced end of the feed bar

FIG. 4 is a sectional view of the main part of the amplifier at the return end of the feed bar.

FIG. 5 is a sectional view of an essential part of an amplifying device at the return end of a feed bar according to a second embodiment of the present invention.

[Explanation of symbols]

1 is a transfer press, 2 is a crown, 3 is a bed,
4A is the left column, 4B is the middle column, 4C is the right column, and 5
A is the first slide, 5B is the second slide, 6A, 6B,
6C is a clamp unit, 7 and 37 are amplifying devices, 7A,
37A is a frame, 8 is a transfer unit, 9A is a first feed bar, 9B is a second feed bar, 10 is a vertical axis, 11A is a first bolster, 11B is a second bolster, and
2, 32 are first sliders, 13 is a first guide rod, 1
4 is a first slider pin, 15 and 35 are second sliders, 1
6 is a second guide rod, 17 is a second slider pin, 18
Is a fulcrum pin, 19 is a lever, 20 is a first drive pin, 21
Is a second drive pin, 23 is a link, 24 is a driven pin, 30
Is a pin, 33 is a lever, 34 is a pin, 38 is a first rack, 39 is a second rack, 40 is a first gear, 41 is a second gear, L3 is a basic dimension of the first slide, and L4 is a second slide. Basic dimensions, S1 is the amplified feed bar stroke length, S2 is the reference feed bar stroke length, E1 is the length between the fulcrum pin 18 and the second drive pin 21 of the lever 19, and E2 is the lever 19 Fulcrum pin 18 and first
The length between the drive pins 20.

Claims (3)

[Claims] 1. A transfer device of a transfer press having a plurality of slides, wherein each slide is provided with a feed bar for conveying a processed part, and each feed bar has a different stroke length in a feed direction. Transfer device for transfer press. 2. The feed direction driving device of the feed bar according to claim 1, wherein the reference feed bar is driven by this, and the feeding device of the reference feed bar is fed by an amplifying device provided between the reference feed bar and an adjacent feed bar. A transfer press transfer device characterized in that the stroke length of the feed bar is driven for each slide by changing the stroke length in the direction, and the feed bar stroke length is changed for each slide. 3. The feed direction driving device of the feed bar according to claim 1, wherein the reference feed bar is driven by this, and the feeding device of the reference feed bar is fed by an amplifying device provided between the reference feed bar and an adjacent feed bar. By changing the stroke length in the direction, the amplifier installed between the reference feed bar that drives the adjacent feed bar and the adjacent feed bar,
A first slider that is guided by the frame of the amplifier and driven by the reference feed bar and operates in the same direction as the reference feed bar, and a first fulcrum on the frame of the amplifier that is provided on the straight line. A lever which is driven by a first slider connected to two fulcrums and swingably rotates, a second slider which is guided by a frame of an amplifying device and which operates in a feed direction, and a feed which operates in the same direction as a second slider in a feed direction. One end of a link is connected to a bar and a drive pin provided on the lever, the other end of the link is connected to a driven pin of a second slider, and a reference feed bar drives an adjacent feed bar. apparatus.