JPS637859B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adjustment device for an upper mold holder in a transfer press. The upper die holder is used to attach the upper die of the die in each process of the transfer press, and the adjustment device adjusts the distance between the upper die holder and the bolster to the die height of the die in each process, that is, the distance between the upper die holder and the bolster for each process of the press. This is an adjustment device to match the die height.

A knock-out pin is built into the mold for each process, and the structure is such that the drawn product (semi-finished product) is pushed out. The length of this knockout pin is standardized, and at the same time, in order to maintain the timing of the knockout operation, the thickness of the hole 2a for the knockout pin in FIG. The distance to the lower surface must be kept constant before and after adjusting the upper mold holder.

Conventionally, the above-mentioned so-called knock-out adjusting device has been incorporated into the upper die holder adjusting device, resulting in a complicated structure such as the addition of a screw mechanism for the knock-out adjusting device.

The present invention provides a simple and compact upper mold holder adjusting device incorporating a knockout adjusting device. Hereinafter, an embodiment of the present invention will be explained in detail based on the drawings.

FIG. 1 is a cross-sectional view of the slide portion, with the bolster, bed, frame, etc. underneath it being omitted. Plate 2 for attaching the upper die
A female screw 3 is fixed to. The plate 2 and the female screw 3 may be integrated. Note that the plate 2 is prevented from rotating relative to the slide. The female screw 3 is slidably guided around its outer diameter in the hole of the slide 1 and is held. There is a threaded portion on the inner diameter of the female thread 3, which meshes with a threaded portion on the outer diameter of the male thread 4. The male screw 4 is rotatably held on the slide 1 by a bush 11 and a bush 12. A worm wheel 7 is fixed to the upper part of the male screw 4, and a mechanism for transmitting torque is connected to the worm wheel 7. The transmission mechanism is shown in FIG.

A piston 6 is incorporated into a cylinder portion formed by the inner diameter of the female thread 3 and the plate 2,
Inside the cylinder part is a rod 5 with a flange part.
is inserted through the hollow part of the male screw 4.
The flange part of the rod 5 is formed by the stepped part of the female thread 3.
It has a structure that can transmit the force that pulls the female screw 3 upward. The hollow hole portion of the male thread 4 is filled with oil to lubricate the threaded portion or the worm wheel 7, etc.

A piston 9 fixed to a hollow rod 5 is incorporated into the balance cylinder 8 fixed to the slide 1.
The lower side is supplied with the necessary pressurized air necessary to balance the weight of the plate 2 and the upper die (not shown) attached thereto. The tip of Rod 5 is
It is slidably and airtightly inserted into an air tank 17 fixed to the slide. The air tank 17 may be provided elsewhere and piped to the tip of the rod 5.

Motor 1 fixed to the slide in Figure 2
The torque of 6 is the pinion 1 of the output shaft of the motor 16.
5. Gear 14 in mesh with this, worm shaft 13 to which gear 14 is fixed and rotatably held on a slide, worm gear portion 13a of worm shaft 13, structure for transmitting information to worm wheel 7 in mesh with this. It is becoming. Manual adjustment may be performed by providing a manual handle instead of the motor 16.

In FIGS. 1 and 2, when the motor 16 rotates, the worm wheel 7 connected to it rotates, and at the same time, the male screw 4 rotates, and the screw mechanism between the male screw 4 and the female screw 3 causes the male screw 4 to rotate. Since the female screw 3 moves relatively, the relative position of the plate 2 with respect to the slide eventually changes. That is,
This means that the mold holder has been adjusted. In this case, it is clear that the distance between the lower surface of the plate 2 in the knockout pin hole 2a and the lower surface of the piston 6 when it is lowered is kept constant.

As mentioned above, this invention has a knock-out piston and a cylinder part inside the female thread of the mold holder, and the piping from the knock-out cylinder to the knock-out tank is also used as a rod for the mold holder balancer, so that the piping to the tank can be structurally improved. Compared to conventional mold holders, knock-out devices, and knock-out synchronization devices for mold holder adjustment, this device has the same functions and is extremely compact in design.

[Brief explanation of the drawing]

Figure 1 is a sectional view, Figure 2 is a sectional view of the transmission mechanism. 1 is a slide, 2 is a plate, 3 is a female thread, 4 is a male thread, 5 is a rod, 6 is a piston, 7 is a worm wheel, 8 is a balance cylinder, 9 is the piston, 10 is the nut, 11 is the bush, 12 is the bush, 13 is the wormshaft, 14 is the gear,
15 is a pinion, 16 is a motor, and 17 is an air tank.

Claims (1)

[Claims] 1. An upper die holder adjustment device installed on the slide of a transfer press includes a plate for attaching the upper die that is prevented from rotating by the slide and can be raised and lowered, and a plate that is erected on the upper surface of the plate so that its outer diameter can be slid on the slide. The lower part of the inner diameter is a cylinder part, the upper part is a threaded part, has an internal thread, and a threaded part that screws into the threaded part of the internal thread, and is rotatable to the slide and restrained from vertical movement. A hollow male thread with a worm wheel provided at the upper part thereof, and a flange portion provided through the hollow portion of the male thread and adapted to and engaged with a stepped portion of the cylinder portion of the female thread at its lower end. , a hollow rod having at its upper end a piston that fits into a balance cylinder fixed to the slide, supplying pressurized air to the underside of the piston to balance the weight of the upper die attached to the plate, and the female thread. a piston that fits into the cylinder part of the rod and is urged downward by supplying pressurized air from the hollow part of the rod, and a hole for a knockout pin that passes vertically through the plate corresponding to the piston; An upper mold holder adjustment device for a transfer press, characterized in that it comprises means for connecting to the male threaded worm wheel and rotating the same.