JPS6135313Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention sequentially feeds workpieces to a processing machine such as a press machine that applies plastic working to plate materials, and at the same time sequentially feeds the workpieces after processing. The present invention relates to a workpiece transfer device for a processing machine that takes out a workpiece.

[Conventional technology]

Conventionally, as shown in Japanese Unexamined Patent Application Publication No. 52-129073, an eccentric cam was attached to the drive transmission shaft of a press, and the swinging motion of the lever engaged with the eccentric cam was transmitted onto the surface plate via a chain or the like. A workpiece transfer device has been proposed that converts and transmits the reciprocating motion of a workpiece supply slide, thereby automatically feeding the workpiece to the processing section of a press machine.

[Problem that the invention attempts to solve]

However, in this conventional workpiece transfer device, only the workpiece supply section is simply linked with the press drive mechanism, and not only is there no consideration for the workpiece takeout section, but the press drive mechanism and supply The structure of the interlocking mechanism with the feeding section is complicated, and furthermore, it is difficult to guarantee that the feeding section will feed the workpiece to the correct processing position.

The present invention was devised to solve these conventional problems, and its purpose is to provide a workpiece that has a simple structure for interlocking with the processing machine drive unit, and that ensures reliable supply and take-out operations. To provide a device for transporting objects.

[Means for solving problems]

The present invention includes a lower mold, a reciprocating part including an upper mold that reciprocates with respect to the lower mold and processes a workpiece placed on the lower mold, and a reciprocating part that is reciprocated in conjunction with the reciprocating part. The lower mold includes a supply part for supplying the workpiece onto the lower mold and a takeout part for taking out the workpiece from the lower mold on the other side, and the supply part and the takeout part are opposite to each other. The workpiece is elastically biased in the direction of contact with the lower mold so that it can be clamped, and the reciprocating part is loosened in the direction of separation from the lower mold by a string via a pulley. It is characterized by being connected and supported.

[Effect]

Therefore, according to the present invention, the supply part and the take-out part of the workpiece are simultaneously moved toward and away from both sides of the lower mold in conjunction with the upper mold, which reciprocates with respect to the lower mold, via the strap. The gripped processed workpiece is taken out from above the lower mold by the separation operation of the take-out part as the reciprocating part rises, and the supplied workpiece is taken out from the lower mold by the approaching action of the supply part as the reciprocating part moves up. can be supplied above.

〔Example〕

The present invention will be explained below based on an embodiment shown in FIGS. 1 and 2.

In the figure, 1 is a processing machine consisting of a press that has a fixed lower die 2 and a reciprocating part 3 including an upper die that moves up and down, and applies plastic deformation such as bending to a workpiece 4 such as a plate material. On both sides of the lower die 2, a supply part 5 for supplying the workpiece 4 to the lower die 2 and a take-out part 6 for taking out the processed workpiece 4 from the lower die 2 and dropping it into a chute 7 are arranged so as to be reciprocatable in the lateral direction. It is set up. As shown in FIG. 1, both parts 5 and 6 are biased toward the inner center by pressing springs 8 and 9, respectively, and these parts 5 and 6 are biased by vacuum chucks, electromagnetic chucks, etc. The workpiece 4 can be picked up and removed.

On the other hand, one end of wires 10 and 11 are connected to both ends of the reciprocating section 3, respectively, as shown, and the other end of each wire 10 and 11 is arranged below both ends of the reciprocating section 3. It is connected to the supply section 5 or the take-out section 6 via pulleys 12 and 13, respectively. As shown in FIG.
They are adapted to retreat in opposite directions from the lower mold 2 against the urging force of. The wire 10,1
1 is designed so that its length can be adjusted in order to adjust the timing of the reciprocating section 3, the supply section 5, and the take-out section 6. As shown in FIG. 1, the wires 10 and 11 have lengths that are slightly slack when the reciprocating section 3 processes the workpiece 4.
It is desirable that the length is such that the work piece 4 is fixed in the supply section 5 and the take-out section 6 before processing.

Note that the workpiece 4 indicated by a broken line in FIG.
The workpiece 4 shown by the chain line in FIG. It shows what is to be supplied to the lower mold 2 by the supply section 5.

Next, the effect will be explained. As shown in FIG. 1, when the reciprocating section 3 including the upper die finishes machining the workpiece 4, the reciprocating section 3 begins to rise by a drive mechanism (not shown). However, as shown in FIG. 1, since the wires 10 and 11 are slightly slack, the supply section 5 and the take-out section 6 do not move during the first stage of the upward movement of the reciprocating section 3 and maintain the state shown in FIG. do.

The reciprocating part 3 rises to some extent and the wires 10,1
1 starts to be pulled, the supply part 5 and the take-out part 6 begin to move away from the lower die 2 against the force of the pressing springs 8 and 9 due to the tensile force. Then, since the workpiece 4 at the right end in FIG. 1 is gripped by the take-out part 6, it moves together with the take-out part 6, and falls into the chute 7 as the grip of the take-out part 6 is released, as shown in FIG. The workpiece 4 that has fallen into the chute 7 is sent to the next process (not shown). On the other hand, when the supply section 5 reaches the left moving end, a new workpiece 4 is supplied to the supply section 5 from a supply mechanism (not shown), as shown by the chain line in FIG.

Next, when the reciprocating part 3 begins to descend, the wires 10 and 11 become slack, so that the supply part 5
Then, the ejecting portion 6 begins to move in the direction of the lower mold 2 due to the urging force of the pressing springs 8 and 9. At this time, since the supply section 5 pushes in a new work 4, each work 4 on the lower die 2 is pushed out by the new work 4 and moves to the right in the figure by 41 works. When the work 4 moves, the take-out part 6 approaches the right end of the lower mold 2 in the figure, so the work 4 on the right end in the figure on the lower mold 2 is gripped by the take-out part 6.

As a result, each work 4 on the lower die 2 is pressed and held from both sides by the supply section 5 and the take-out section 6, and its position is stabilized. Note that, at this stage, the upper die of the reciprocating section 3 is not yet in contact with the workpiece 4, and the workpiece 4 is not processed.

When the reciprocating part 3 further descends from this state,
The wires 10 and 11 are slightly loosened as shown in FIG. 1, and the reciprocating portion 3 is processed by the upper die.

The above-mentioned operations are repeated below to continuously
processing is performed.

[Effect of idea]

As mentioned above, in this invention, the lower mold,
a reciprocating part including an upper mold that reciprocates with respect to the lower mold to process the workpiece placed thereon; The supply part supplies the workpiece onto the lower die, and the takeout part takes out the workpiece from above the lower die on the other side. The workpiece is elastically biased in the tangential direction so as to be able to clamp the workpiece therein, and the reciprocating part is connected and tensioned in the direction away from the lower die by a string via a pulley, with each being loosened. Because of this structure, the supply part and the take-out part of the workpiece are connected to the upper mold, which moves reciprocatingly with respect to the lower mold, through a strap, and are simultaneously moved towards and away from both sides of the lower mold, and the reciprocating movement The gripped processed workpiece is taken out from above the lower mold by the separating operation of the take-out part as the part rises,
The supplied workpiece can be supplied onto the lower mold by the approach operation of the supply section accompanying the processing of the reciprocating section.

In particular, since the straps connecting the reciprocating part including the upper die and the supply section and the take-out section are loose, the workpiece is not fed during the initial ascent and final stage of the upper die's descent. The workpiece is in a holding position where it is held between the upper die and the ejector, so there is a risk that the workpiece may move due to the upper mold being raised due to the return of the workpiece after machining, or the risk of the workpiece being moved during machining. There is no risk of damage due to unstable position holding, and reliable machining operations can be performed. In addition, as mentioned above, the interlocking mechanism of the supply section and the take-out section has a simple structure consisting of only the strap and the elastic holding member, and since it is directly interlocked by the strap, there is little loss of force and the interlocking transfer is easy to adjust and maintain. There is an advantage in that the device can be provided.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention during processing, and FIG. 2 is a schematic diagram showing an embodiment of the present invention during workpiece removal. 1...Processing machine, 2...Lower mold, 3...Reciprocating part,
4... Workpiece, 5... Supply section, 6... Take-out section,
8, 9... Pressing spring, 10, 11... Wire, 1
2,13...pulley.

Claims (1)

[Scope of utility model registration request] A reciprocating part including a lower mold, an upper mold that reciprocates with respect to the lower mold to process a workpiece placed on the lower mold, and a reciprocating part that is reciprocated in conjunction with the reciprocating part, It has a supply section on one side for supplying the workpiece onto the lower die and a takeout section on the other side for taking out the workpiece from above the lower die, and the supply section and the takeout section are arranged opposite to each other on the lower die. The workpiece is biased in the direction of contact with the mold so that it can be clamped, and
A workpiece transfer device for a processing machine, characterized in that the reciprocating part is connected and supported by a string via a pulley with a slack in the direction of separation from the lower die.