JPH022506Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device that can quickly, reliably, and automatically adjust the inner width of a feed bar in a transfer press.

[Conventional technology]

The pair of left and right feed bars of the transfer press obtain a predetermined gripping and opening stroke for the workpiece (panel) through rocking motion by a cam mechanism, but if the shape and dimensions of the workpiece are different, the reference position for the gripping and opening stroke can be adjusted. Need to adjust. For this reason, the inner width of the feed bar has conventionally been adjusted using a screw mechanism, etc., but such conventional means have the problem of taking time to adjust the width, increasing line stoppage time, and reducing production efficiency. Ta. Furthermore, as a conventional feed bar inner width adjusting device, there is one shown in Japanese Patent Application Laid-Open No. 55-97827, but this device is equipped with a device for moving the rod in the longitudinal direction to select a width change setting position. In addition to the above problem, there was also the problem that the inner width could not be adjusted automatically.

[Problem that the invention attempts to solve]

The object of the present invention is to enable automatic adjustment of the inner width of a feed bar in a transfer press in a short time, reliably, and automatically.

[Means for solving problems]

The present invention includes a drive arm that can swing in a direction parallel to the direction of workpiece movement, and a swinging motion of the drive arm that moves back and forth in the direction parallel to the direction of movement of workpiece. A hollow power transmission shaft connected to the drive arm or rod is disposed between the feed bar extending in parallel to the rod that moves the feed bar in the width direction of the workpiece, and the rod is moved in the longitudinal direction. a feed bar inner width positioning member having a plurality of engagement holes provided at required intervals in the axial direction is fitted into the transmission shaft so as to be freely slidable in the axial direction; The tip of the feed bar inner width positioning member protruding from the transmission shaft is connected to the rod or drive arm, and an engaging member is provided at a predetermined position so that it can be attached to and detached from the engagement hole. A positioning member for positioning the engagement hole into which the mating member is fitted is provided so as to be able to engage with an abutting member provided on the transmission shaft or the feed bar inner width positioning member.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows an example of a mechanism for moving the feed bar of a transfer press in the width direction of the workpiece.
A cam 2 is fixed to a shaft 1 which can be rotated by an appropriate means, and a drive arm 3 is attached to the tip of a drive arm 3 which can be swung in a direction parallel to the work progress direction by the rotation of the cam 2. A rod 5' extending in a direction parallel to the work progressing direction is connected via the width adjustment device 4, a rod 5 is connected to the rod 5' via a joint, and a rack 7 is carved at a desired position on the rod 5. Set up

A pinion 9 is installed at the upper and lower ends of the intermediate shaft 8 that extends vertically.
10 is fixed, the pinion 9 is engaged with the rack 7, and the pinion 10 is engaged with the rack 12 carved in the rod 11 extending in the width direction of the workpiece, and the rod 11 is connected to the rack 12 on the rail (not shown) in the width direction of the workpiece. A movable truck 13 is connected, and a feed bar 14 disposed parallel to the rods 5, 5' is attached to the truck 13.

A pinion 16 whose axis is horizontal is engaged with a rack 15 carved in the rod 11. A rack 18 is carved in a rod 17 which is disposed parallel to the rod 11 and extends on the opposite side to the feed bar 14. mesh with rack 18, and then tighten rod 1.
Although not shown, a cart equipped with a feed bar is connected to the outer end of the workpiece 7 in the width direction.

The details of the feed bar inner width adjusting device 4 will be explained with reference to FIG. The feed bar inner width positioning member 21 fixed to the end of the feed bar is slidably fitted into the hollow part of the transmission shaft 20, and the engaging part 21a provided at the tip of the feed bar inner width positioning member 21 is inserted into the inside of the transmission shaft 20. A plurality of through holes 22 are bored at required intervals in the longitudinal direction of the feed bar inner width positioning member 21 so as to be able to engage with an engaging portion 20a provided at a required position, and a fluid pressure cylinder is provided at the upper part of the transmission shaft 20. 23 arranged vertically,
A vertical pin 24 that can be fitted into the through hole 22 is provided at the lower end of the rod 23a of the hydraulic cylinder 23.
and multiple hydraulic cylinders 2 in place.
5 is arranged vertically, and a positioning stopper 26 is attached to the lower end of the rod 25a of the hydraulic cylinder 25, which can engage with the abutting member 27 fixed at a predetermined position on the outer periphery of the transmission shaft 20. The tip of the rod 29a of the hydraulic cylinder 29, which is pivotally connected to the feed bar through the trunnion 28, is connected to a bracket 30 fixed to the feed bar inner width positioning member 21.

During press work, the feed bar 14 and the like move in one process of gripping, raising, feeding, lowering, opening, and returning using a cam mechanism in order to sequentially feed the workpieces to the next process. In the case of gripping and releasing, the movement of the feed bar 14 and the like in the width direction of the workpiece is performed by the cam 2. That is, axis 1
When the cam 2 is driven and the cam 2 rotates, the drive arm 3 swings, so that the rods 5 and 5' move back and forth in a direction parallel to the direction of movement of the workpiece via the feed bar inner width adjustment device 4.

In FIG. 1, for example, when the rods 5 and 5' move in the direction of arrow A, the pinion 9, intermediate shaft 8, and pinion 10 are rotated in the direction of arrow B by the rack 7, and the rods 11, truck 13, and feed bar 14
moves to the center side in the width direction of the workpiece (arrow C side),
A workpiece is gripped by fingers provided on the feed bar 14. The feed bar on the opposite side to the feed bar 14 moves in the direction of arrow D via the pinion 16 and rack 18, and the workpiece is gripped by the fingers.

After the finger releases the workpiece through a predetermined process, the movement of each element between the rods 5' and 11 is opposite to that in the case of the rod 11, and the feed bar 14 etc. moves outward in the width direction of the workpiece. . Note that during normal work, the vertical pin 24 is lowered by the hydraulic cylinder 23 and is fitted into a predetermined through hole 22 of the feed bar inner width positioning member 21.

If the shape, dimensions, etc. of the workpiece are different from the previous ones, it is necessary to adjust the position where the feed bar 14 etc. start moving toward the center in the width direction so that the fingers can grip the workpiece without any problem. Further, the procedure for increasing the inner width interval of the left and right feed bars, for example, will be explained with reference to FIGS. 3A to 3F.

That is, first, the fluid pressure cylinder 6, which is a width change setting position selection device, is actuated to push the rod 5 toward the feed bar inner width adjustment device 4, thereby moving the feed bar inner width adjustment device 4, and moving the drive arm 3 to the second position. It is rotated from the position shown by the solid line in the figure to the position shown by the solid line in FIG. 3A and separated from the cam 2 shown in FIG. 1. Next, the hydraulic cylinder 23 is operated to remove the vertical pin 24 fitted into the rightmost through hole 2 in FIG. (For example, the second one from the right in Figure 3 A)
is activated to lower the positioning stopper 26 (see Fig. 3B).

Next, when pressure oil is supplied to the rod side of the hydraulic cylinder 29 to operate the hydraulic cylinder 29, the transmission shaft 20 is pulled by the hydraulic cylinder 29 and moves toward the rod 5', and the drive arm 3 is The transmission shaft 20 rotates counterclockwise from the position shown in FIG. 3B and stands up, and as shown in FIG.

When the contact member 27 of the transmission shaft 20 contacts the predetermined positioning stopper 26, the second through hole 22 from the right in FIG. The pressure cylinder 23 is operated to lower the vertical pin 24,
The vertical pin 24 is inserted into the through hole 22 (see FIG. 3D), and then the positioning stopper 26, which is engaged with the abutment member 27, is raised by the hydraulic cylinder 25 (see FIG. 3E). Next, when the pressurizing force of the fluid pressure cylinder 6 is released, the drive arm 3 rotates counterclockwise as shown in FIG. 3 E due to the cylinder force of the fluid pressure cylinder 31 shown in FIG. (See Figure 3). As a result, the rod 5 is drawn toward the direction of arrow A in FIG. Therefore, the pinion 9, intermediate shaft 8, and pinion 10 rotate in the direction of arrow B in accordance with the distance drawn toward the direction of arrow A, and the rod 11, truck 13, and feed bar 14 adjust to the rotation angle of the pinion 10. Correspondingly, the feed bar 14, which is not shown in FIG. 1, is paired with the feed bar 14, which is not shown in FIG. As a result, the inner width of the left and right feed bars is expanded.

When narrowing the inner width of the left and right feed bars, the hydraulic cylinder 6 is operated for its full stroke, and then the hydraulic cylinder 23 is operated to remove the vertical pin 24 from the through hole 22. Next, the pinion rod 29a is operated in the direction in which the piston rod 29a of the hydraulic cylinder 29, which is in the retracted state, protrudes. As a result, the drive arm 3 rotates clockwise and enters the state shown by the two-dot chain line in FIG. The subsequent operations are adjusted in the same manner as when expanding the inner width of the feed bar described above.

In the embodiment of the present invention, the transmission shaft is connected to the drive arm via a link and the feed bar inner width positioning member is connected to the rod side. However, the feed bar inner width positioning member may be driven via the link. It can be implemented by connecting the transmission shaft to the arm and connecting it to the rod, and providing a contact member that contacts the positioning stopper on the side of the positioning member for the inner width of the feed bar, and other various modifications within the scope of the gist of the present invention. Of course, it is possible to add .

[Effect of idea]

According to the internal width adjustment device of the transfer press of the present invention, the internal width of the feed bar can be adjusted reliably and automatically in a short time, reducing line stoppage time and improving production efficiency. Moreover, various excellent effects can be achieved, such as the ability to save labor.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment of the feed bar inner width adjusting device in the transfer press of the present invention, Fig. 2 is a detailed view of the same feed bar inner width adjusting device, and Fig. 3 A to F show the inner width of the same feed bar. It is an operation diagram when performing adjustment. In the figure, 2 is a cam, 3 is a drive arm, 4 is a feed bar inner width adjustment device, 5 and 5' are rods, 6 is a fluid pressure cylinder (width change setting position selection device), 1
9 is a link, 20 is a transmission shaft, 21 is a feed bar inner width positioning member, 22 is a through hole, 23 is a fluid pressure cylinder, 24 is a vertical pin, 25 is a fluid pressure cylinder, 26 is a positioning stopper, 27 is a contact member, 29 is a fluid pressure cylinder, and 31 is a fluid pressure cylinder.

Claims (1)

[Scope of utility model registration request] A drive arm that can swing in a direction parallel to the workpiece traveling direction, and the swinging motion of the drive arm moves back and forth in the direction parallel to the workpiece traveling direction, and the forward and backward movement causes a feed bar that extends parallel to the workpiece traveling direction. A hollow power transmission shaft connected to the drive arm or rod is disposed between the rod and the rod that is moved in the width direction of the workpiece,
A feed bar inner width positioning member that is connected to the rod with a width change setting position selection device that moves the rod in the longitudinal direction, and has a plurality of engagement holes provided in the transmission shaft at required intervals in the axial direction. is slidably inserted in the axial direction, and the tip portion of the feed bar inner width positioning member protruding from the transmission shaft is connected to the rod or drive arm, so that it can be attached to and detached from the engagement hole at a desired position. A positioning member for positioning the engagement hole into which the engagement member is fitted may be engaged with an abutting member provided on the transmission shaft or the feed bar inner width positioning member. A feed bar inner width adjustment device in a transfer press, characterized in that it is provided as follows.