JPS6129839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling and disassembling a shaft height adjusting wedge, which is suitable for use in assembling and disassembling a shaft height adjusting wedge in a press.

The shaft height adjustment wedge section requires disassembly for reasons such as maintenance, inspection, and maintenance.

The conventional method of disassembling the wedge part is to set up a table on the bed or hard plate, set four jacks on this table, and remove the wedge from the ram while maintaining the level of each jack. , or the work of incorporating it is usually done.

However, because the parts are heavy, and because the parts are inside the press frame, cranes cannot be used, it is difficult to take out the wedge parts from inside the press or assemble them. It had the disadvantage that it required a considerable amount of time to disassemble, assemble, and clean up afterwards.

The present invention has been made in view of the above, and an object of the present invention is to eliminate the drawbacks of the conventional method by providing a simple means to the wedge portion and allowing the wedge portion to be operated. The embodiments shown in the drawings will be described in detail below.

In the figure, 1 is a bed constituting a lower frame of a press machine, 2 is a hard plate provided on the bed, and a piston 4 is fitted into a cylinder portion 3 formed inside the hard plate. This piston 4 is moved up and down by pressure oil supplied and discharged from the piping 5 into the cylinder part 3, and when the piston 4 moves up to the full stroke S2, its upper end surface meets the upper end surface of the hard plate 2. It's starting to match. A lower die holder 6 is movably supported on the hard plate 2 via wheels 7 attached to its lower end surface, and a gap S1 is provided between the lower die holder 6 and the hard plate 2. The movement operation is performed by pushing and pulling a hydraulic cylinder 8 detachably connected to the side end of the lower die holder 6, and when the lower die holder 6 is in a fixed position on the hard plate 2, , the wheel 7 is located on the upper end surface of the piston 4, and the wheel 7 sinks into the upper opening of the cylinder portion 3 due to the downward movement of the piston 4, whereby the lower die holder 6 is placed on the hard plate 2, It is clamped integrally with the bed 1 by a not-shown clamper provided on the bed 1. Reference numeral 9 denotes an upper die holder, which is pulled toward the ram side during normal operation by a clamper (not shown) provided on the ram 10.

A certain amount of stroke S5 to perform press work
Inside the ram 10 that moves up and down, there is a main wedge 1.
1, a hard plate 12, and an adjustment wedge 13 slidably interposed between these, suspension rods 14, 15, a spring 17 installed between a nut 16 screwed into the upper end of the rod 16, and a ram 10. It is mounted so that it can be moved up and down through. The hanging rods include a lower hanging rod 14 that is made shorter than the depth S4 of the wedge insertion hole formed in the ram, and an upper hanging rod 1 that is detachably connected to this with a screw.
5, and the spring 17 attached to it is
It has a spring force sufficient to suspend the entire weight of the main wedge 11, hard plate 12, adjustment wedge 13, etc., and is suspended so that the hard plate 12 does not separate from the inner surface of the ram by adjusting the nut 16.

The adjusting screw 18 facing the right end of the adjusting wedge 13 in the drawing is moved in the direction of arrow a by forward and reverse driving of a wedge adjusting drive device 19 mounted on the outer end of the ram 10. A hydraulic cylinder 20 with a piston rod tip facing the left end of the adjusting wedge 13 is mounted on the left end of the outer surface of the ram 10 facing the wedge adjustment drive device 19, and the pushing operation of the hydraulic cylinder 20 This serves to push the adjusting wedge 13 to the right in the figure, and a stopper 21 as shown in FIGS. 3 and 4 is provided at its moving end.

The configuration of the shaft height adjusting wedge portion in the ram is as described above, and the procedure for disassembling it is as follows.

As shown in FIG. 1, in normal operation, the ram 10 is lowered so that the upper and lower die holders 9 and 6 are in contact with each other, and the wedge adjustment drive device 19 is driven to retract the adjustment screw 18 as shown in the figure. After that,
By pushing out the hydraulic cylinder 20, the adjusting wedge 13 is moved to the right until it hits the stopper 21, and then the piston rod of the hydraulic cylinder 20 is retracted as shown in FIG.

Next, the nut 16 is loosened and the hanging rod 15 is rotated to release the connection between the hanging rods 14 and 15.
Next, when the ram 10 is moved to the top dead center, it will be in the state shown in FIG. Ram 1
During the upward movement of the hard plate 12, the right end of the hard plate 12 is formed with a notch b as shown in FIG. There is no risk of hitting a certain hard plate 12.

Next, pressure oil is supplied to the cylinder part 3 and the piston 4
When the lower die holder 6 is raised and its upper end surface coincides with the upper end surface of the hard plate 2, the lower die holder 6 will float above the upper surface of the hard plate 2 by an amount S1.

In this state, a gap S3 is maintained between the lower surface of the ram 10 and the upper surface of the hard plate 12. Therefore, when the lower die holder 6 is pushed by the pushing operation of the hydraulic cylinder 8, the upper die holder and the wedge portion mounted on the lower die holder can be easily taken out from the press.

Also, when incorporating the wedge part into the ram 10,
This can be carried out by operating the means opposite to the above-mentioned disassembling operation.

As detailed above, by carrying out the method of the present invention using the above-mentioned apparatus, there is an advantage that the work can be performed safely, easily, and in a short time compared to the conventional disassembly/assembly method using jacks. . Furthermore, this method can be used with or without a die holder take-out device, and its effects are significant when carried out in combination with a die holder take-out device as in the present invention.

[Brief explanation of the drawing]

The drawings show an embodiment of the shaft height adjustment wedge part in the press ram which is suitable for carrying out the present invention. Fig. 1 is a partially sectional side view of the ram when it is moving downwards, and Fig. 2 shows the connection of the hanging rod. Figure 3 is a detailed enlarged view of the stopper of the adjustment wedge, Figure 4 is the side view when the ram is moved upward to the top dead center by releasing the
FIG. 5 is a bottom end view of the lower suspension rod, and FIG. 6 is a plan view of a notch in the hard plate. 1...bed, 2,12...hard plate,
3...Cylinder part, 4...Piston, 5...Piping, 6...Lower die holder, 7...Wheel, 8,20
... Hydraulic cylinder, 9 ... Upper die holder, 10 ...
... Ram, 11 ... Main wedge, 13 ... Adjustment wedge, 14, 15 ... Hanging rod, 16 ...
Nut, 17...Spring, 18...Adjustment screw, 19...Wedge adjustment drive device, 21...Stopper.

Claims (1)

[Claims] 1. The stroke length of the ram is made larger than the height of the wedge section that is assembled into the ram by overlapping the main wedge, adjustment wedge, and heart plate, and the lower part of the splittable suspension rod that suspends the wedge section within the ram. By making the side shorter than the height of the wedge part, dividing the hanging rod into an upper part and a lower part, and then stroke up the ram, it is possible to raise only the ram while leaving the wedge part in that position. A method for assembling and disassembling a shaft height adjusting wedge in a press, characterized in that the wedge part can be stored in the ram by stroking down the ram with the wedge part placed directly under the ram.