JPH0222099Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a workpiece conveyance device, and particularly to a device that conveys a workpiece from a fixed position to a fixed position at a predetermined timing, and is used to supply a workpiece to a transfer press. It can be used as a device, etc.

[Background Art and its Problems] Conventional devices of this type have a suction cup that is attached to the feed bar of a transfer press and operates in conjunction with the movement of the feed bar to adsorb the blank material, and then attach the blank material to the feed bar. For example, supplying equipment (for example, Utility Model Act 57-50109
(see publication).

In the conventional apparatus described above, the blank material is attracted by a vacuum suction cup, and the suction cup must be operated in accordance with the movement of the feed bar of the transfer press, so the mechanism is complicated and the manufacturing cost increases. There were other drawbacks.

Additionally, items that cannot be picked up by the vacuum suction cup, such as items that have uneven surfaces or are not smooth, cannot be transported.

[Purpose of the invention] The purpose of the invention is to have a relatively simple structure,
It is an object of the present invention to provide a workpiece transport device that can reliably transport workpieces of various shapes from a fixed position to a fixed position value.

[Means and effects for solving the problems] The present invention is to intermittently drive an endless conveying means composed of a chain or the like by a driving means such as a pneumatic cylinder, and the endless conveying means is It has a relatively simple structure with workpiece stands attached at regular intervals, and it is possible to transport workpieces of various shapes by selecting the shape of the workpiece stand to suit the workpiece. At the same time, it enables reliable transportation.

Specifically, an endless conveying means, an engaging part provided at a constant interval on the conveying means, a first engaging means formed to be detachable from the engaging part, and a first driving means for engaging and disengaging the engaging means from the engaging portion; one end of the first driving means is attached to the first driving means, and the first driving means is supported so as to be swingable about a fulcrum provided at an intermediate portion thereof; a lever, a second driving means attached to the lever, and a lever installed so as to be driven by the second driving means, and located at the other end of the lever and capable of engaging and disengaging from the engaging portion of the conveying means. and a second engaging means formed in the engaging part of the conveying means, when the first engaging means engages with the engaging part of the conveying means, the second engaging means is connected to the engaging part of the conveying means. When the first engaging means falls off from the engaging portion of the conveying means, the second engaging means falls off from the engaging portion of the conveying means.
Each of the engaging means, each driving means, and the lever are arranged so that the engaging means engages with the engaging portion of the conveying means.

[Embodiment] FIG. 1 is a partially cutaway side view of an embodiment of the present invention. The workpiece conveyance device according to this embodiment is used to feed the workpiece to the transfer press because it is dangerous for an operator to directly feed the workpiece to the transfer press.

In the figure, an endless chain 6 extending toward a transfer press is rotatably engaged with three sprockets 4 that are rotatably supported on a base 2.

A plurality of workpiece stands 8 are fixed to the endless chain 6 at regular intervals.

The workpiece holder 8 is shaped to match the shape of the workpiece 10, and as shown in the figure, when the workpiece 10 is placed on the workpiece holder 8, the workpiece 10 can be easily moved. It is constructed so that it does not move.

Further, a shaft 12 is fixed to the base 2, and a lever 14 is rotatably supported on the shaft 12.

Furthermore, a hook 16 constituting a first engaging means is fixed to one end of the lever 14, and the tip of a driving rod 20 of a first air cylinder 18 constituting a first driving means is fixed to one end of the lever 14. hinged.

Further, a second pneumatic cylinder 22 constituting a second driving means is fixedly installed in the center of the lever 14, and this pneumatic cylinder 22 swings together with the lever 14 about the shaft 12.

A hook 26, which is a second engagement means, is fixed to the tip of a drive rod 24 that advances and retreats toward the transfer press in the second pneumatic cylinder 22, and this hook 26 is attached to the endless chain 6, which is a roller chain. It can be engaged with and disengaged from rollers provided at regular intervals, and these rollers constitute the engaging portion of the endless chain 6, which is endless conveyance means.

Further, at the other end of the lever 14 there is a guide means 2 configured to guide the drive rod 24.
8 is attached.

Next, the operation of the above embodiment will be explained.

First, in the state shown in FIG.
The drive rod 20 of the pneumatic cylinder 18 is in a state of upward movement, in which case the hook 16 engages the roller of the endless chain 6 and stops its movement.

On the other hand, the drive rod 2 of the second pneumatic cylinder 22
4 is in a backward state, and the hook 26 is detached from the roller of the endless chain 6.

When compressed air is supplied from a compressed air supply source (not shown) to the first pneumatic cylinder 18 and the drive rod 20 is moved downward, the lever 14 rotates as shown in FIG. 2, and the hook 26 moves endlessly. Engages with the roller of chain 6.

Next, in this state, the second pneumatic cylinder 22 is driven by supplying compressed air from a compressed air supply source (not shown), thereby moving the drive rod 24 forward.

As a result, the hook 26 moves on the guide means 28 in the direction indicated by arrow A in the figure while remaining engaged with the rollers of the endless chain 6.

As a result, the endless chain 6 moves in the direction indicated by arrow B in the figure.

Therefore, the workpiece 10 placed on the workpiece table 8 by the operator moves forward toward the transfer press by the distance that the hook 26 has moved.

Next, the hook 16 is engaged with the roller of the endless chain 6 by driving the first pneumatic cylinder 18 to raise the drive rod 20;
Return the lever 14 to its original position.

As a result, the hook 26 falls off the roller of the endless chain 6. Thereafter, the second pneumatic cylinder 22 is driven to return the drive rod 24 to its original position as shown by arrow C in FIG.

By repeating the above-mentioned operations, that is, the hooks 16 and 26 are alternately engaged with and disengaged from the rollers of the endless chain 6, and the hooks 26 are moved forward and backward toward the transfer press by the second pneumatic cylinder 22. The chain 6 can be moved intermittently by a fixed distance toward the transfer press, thereby allowing the works 10 to be successively supplied to the transfer press.

Therefore, by arranging the base 2 so that the workpiece 10 at the front end matches the position of the finger on the feed bar of the transfer press, the workpieces 10 can be successively fed to the transfer press. .

According to the above embodiment, the endless chain is
Since it has an extremely simple structure in which it is driven by a book cylinder, its operation is reliable and its manufacturing cost is low.

Furthermore, since a chain equipped with rollers serving as engaging portions is used as the endless conveyance means, there is no need to provide a separate engaging portion.

Furthermore, since a pneumatic cylinder is used as the driving means, it is easy to maintain a constant moving distance at all times, and it is also easy to handle.

Further, since the workpiece table 8 is fixed to the endless chain 6, even if the workpiece 10 has various shapes, it can be reliably held and transported.

Note that the present invention is not limited to the above-described embodiments; for example, a belt conveyor or the like may be used as the endless conveyance means, and a suitable engagement portion may be provided thereon, and a hydraulic cylinder or other similar driving means may be used. Of course, it is also possible to use a driving means having the following functions.

[Effects of the invention] As detailed above, the present invention has an excellent structure in which the endless conveying means is moved by a driving means such as a pneumatic cylinder, and the structure is extremely simple and the operation is reliable. It is effective.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the embodiment of the present invention;
The figure is a diagram for explaining the operation of the embodiment of the present invention. 6... Endless chain, 12... Shaft, 14...
...Lever, 16, 26...Hook, 18, 22...
...first and second pneumatic cylinders, 28...guiding means.

Claims (1)

[Claims for Utility Model Registration] (1) An endless conveyance means provided with engaging portions at regular intervals and extending toward a transfer press;
This endless conveyance means has a workpiece table provided at regular intervals on which the workpieces are placed, a lever that is swingable around a fulcrum provided in the middle, and a first support plate provided at one end of the lever. an engaging means, a first driving means for swinging the lever to engage and disengage the first engaging means from the engaging portion of the endless conveying means, and a first driving means that is attached to the lever and swings together with the lever; and a second driving means provided at the tip of the second driving means that advances and retreats toward the transfer press on the other end side of the lever, and which engages the endless conveying means alternately with the first engaging means. A workpiece conveying device comprising: second engaging means that engages and disengages from the engaging portion to move the endless conveying means toward the transfer press. (2) Utility Model Registration The workpiece conveyance device according to claim 1, wherein the endless conveyance means is a conveyor including a chain. (3) Utility Model Registration The workpiece conveyance device according to claim 1, wherein the first and second driving means are pneumatic cylinders.