JPS5935312Y2 - Three-position movement control device for transfer bar in press machines, etc. - Google Patents

Description

[Detailed description of the invention] This invention uses a transfer bar type actuator with suction cups, electromagnets, chuckers, etc. attached to a transfer press machine, etc., and uses the suction cups, etc. attached at regular intervals, as an intermediate between processing stations. The machine moves to the first position such as the previous workpiece supply position or press station and grabs the workpiece by suction or the like every time one step of press work is completed without interfering with the press work. The first cylinder and its first
a second cylinder having a stroke twice as large as that of the cylinder; the second cylinder is supported on a sliding table actuated by the piston rod of the first cylinder; A piston rod that expands and contracts in the direction of the opposite force is provided, and a transfer bar that moves between a neutral position, a first position on either the left or right, and a second position on the other is connected to the piston rod of the second cylinder, 1st. Simultaneous contraction of each piston rod of the second cylinder returns the bar from the second position to the neutral position, expansion and contraction of the first cylinder moves the bar to the first position, and the piston rod of the second cylinder returns from the state of The second bar is expanded and contracted by
To provide a movement control device for a transfer bar, which is characterized by a structure in which the transfer bar is moved to a certain position, and which can accurately index three positions using two cylinders whose strokes can be easily adjusted accurately. be.

An embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the figures, 1 is a machine base, 2 and 3 are side frame plates fixed to both sides of the machine base, and upper and lower horizontal rails 4.4 are fixed in parallel and a plurality of sliders 5 are fitted.

Each slider 5 is provided with a short-stroke vertical cylinder 6, and a vertical sliding piece 8 fitted onto a vertical guide rod 7 is fixed to the piston-fixed vertical cylinder 6.

9 is a transfer bar parallel to the horizontal rails 4, 4 fixed to each vertical sliding piece 8, and is connected to the workpiece supply position a of the transfer press machine and the plurality of press stations b-□
, b-2... and the same number of fingers 10 are attached at the same intervals.

The finger 10 of this embodiment is shown as having a suction cup 12 connected to the tip of a vacuum suction tube 11 attached to a transfer bar 9. It can be any finger that repeats the operations of , conveying, and ejecting.

A horizontal bracket 16 protruding leftward from the lower part of FIG. 1 is fixed to the side frame plate 2, and the piston rod 1
A first cylinder 17 that can extend leftward is attached and fixed, and a guide rod 20.20 fixed between fixed supports 19.19 at both ends is provided on the horizontal bracket 16, and the piston A number of sliders 23 provided on a horizontal slider 22 connected and fixed to the rod 18 via vertical pieces 21 are fitted into the guide rods 20.20.

The stroke of the first cylinder 1T is the press station b-1 of the press machine. It is set to 1/2 between b-2.

On the sliding table 22, the protruding direction of the piston rod 25 is set in the first direction.
The second cylinder 24 is installed on the right side in the completely opposite direction to the husband of the cylinder 17.

Stroke 7 of the piston rod 25 of this cylinder 24
is twice as large as the cylinder 11 in IT, and is equal to the spacing between the press stations b-□ to b-2 described above.

The piston rod 25 is loosely passed through the side frame plate 2 and connected to one of the sliders 5.

In other figures, C is a discharge shoe for press finished products), d-
1, a 2 are each of the above-mentioned Fresstegeons b1. This is an upper mold that moves up and down in correspondence with the lower mold b2.

The operation of the apparatus of the embodiment will be explained with reference to FIGS. 3 to 5. In the state shown by the solid line in FIG. 1 and in FIG. 2.3 when each piston rod 18.25 of the second cylinder 17.24 is retracted, the slider 5 and the transfer par 9 are both in the neutral position, and the finger 10 is machined. Object supply position a1 press station b 1, b 2, discharge chute c
etc., so that the lowering movement of the upper molds d 1 * d 2 is not hindered.

By lowering this upper die d1*d2, press station b
When one step of pressing work is completed on the lower die of -1eb-2, the piston rod 18 of the first cylinder 17 extends with a predetermined stroke as shown by the chain line in FIG. 1 and in FIG. 4,
Both the slider 5 and the transfer parr 9 are in the first position to move the finger 10 to the workpiece supply position a and the press station b-1. Match on b-2.

Therefore, here, the vertical cylinder 6 transfers par 9.
Then, the finger 10 is lowered, and the suction cup 12 is pressed against the workpiece on the supply position a and the lower mold of the press station b 1 s b 2, and the vacuum suction pipe 11 is connected to the vacuum pump to suck the workpiece. When the vertical cylinder 6 is further returned to its original raised position and the piston rod 25 of the second cylinder 24 is extended, the slider 5 and transfer par 9 move to the second position as shown in FIG. Fit the fingers 10 onto the press stations b-□, b-2 and the discharge chute c.

Therefore, when the finger 10 is lowered again by the vertical cylinder 6 and the communication with the vacuum pump of the vacuum suction tube 11 is cut off, the workpiece gripped by the finger 10 is moved to the lower die of press stations b-□ and b-2. One more piece is dropped onto C (discharge/knee) and is discharged.

Therefore, after returning the vertical cylinder 6 to its original raised position,
．． The piston rods 18 and 25 of the second cylinders 17 and 24 are contracted all at once as shown by the solid lines in FIG.
Return the transfer par 9 to the neutral position.

Figure 6 is 1. Another embodiment in which the arrangement of the second cylinder is changed is shown, in which an L weir plate 2a corresponding to the side support plate 2 in Figs. 1 and 2 is fixed to the rear side of the machine base 1, and the L weir plate 2a is The first cylinder is fixed to the rearward protruding piece as described above, and the assembly is performed in exactly the same manner as explained in connection with FIG.
6]1') It is connected to the L-shaped mounting plate 26 fixed to the slider 5, and the operation is the same as in FIGS. 1 to 5.

This example M is advantageous when the left (or right) side of the machine base cannot be used as a mounting part for the cylinder.

As clarified by the description of the above embodiments, the present invention provides a first embodiment in which the strokes of the piston rods 18 and 25 can be freely adjusted, and the stroke of the piston rod 250 is twice as large as the stroke of the piston rod 18. With the combination of the second cylinder, the transfer parser 9 is moved between a neutral position and a first position and a second position equidistant to either the left or right with the neutral position as the center, supplying the workpiece; Transfer, discharge, etc. can be performed with extremely precise distance accuracy, and the above accuracy can be achieved by adjusting the mounting position of the two cylinders,
This brings about effects that can be achieved by stroke adjustment, etc.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a plan view, FIGS. 3 to 5 are illustrations of operation, and FIG. 6 is a plan view of another embodiment. 1...Machine base, 4...Horizontal rail, 5...
...Slider, 9...Transfer bar,
16...°°° horizontal bracket, 17... first cylinder, 18... piston rod, 20
...Guide rod, 22...Sliding stand, 24.
...Second cylinder, 25...Piston rod.

Claims (1)

[Scope of utility model registration request] It consists of a first cylinder and a second cylinder whose stroke is twice as large as that of the first cylinder, and the second cylinder is supported on a sliding platform actuated by the piston rod of the first cylinder. A piston rod is provided that expands and contracts in the opposite force direction to the piston rod of the first cylinder, and the piston rod of the second cylinder has a neutral position, a first position of one force on either the left or right, and a second position of the other one. Connect the transfer bar that moves to the first. Simultaneous contraction of the respective piston rods of the second cylinder returns the bar from the second position to the neutral position, and expansion and contraction of the first cylinder returns the bar to the first position.
1. A three-position movement control device for a transfer bar in a press machine or the like, characterized in that the transfer bar is moved to the first position, and from that state, the bar is moved to the second position by expansion and contraction of a piston rod of a second cylinder.