JPS5928633Y2 - Upper die removal device for hydraulic equipment - Google Patents

Description

[Detailed explanation of the idea] For wire connection, the wire is inserted into an aluminum sleeve and the sleeve is compressed. However, in the hydraulic equipment used for this, the sleeve is inserted or removed between the upper die and the lower die. Each time, it is necessary to pull out the upper mold holder inserted into the hydraulic machine body like a chopstick box lid to open the upper part of the hydraulic machine.

However, the upper die is inserted into the upper die holder in the same manner as the chopstick case lid.

Therefore, when attaching and detaching the upper die holder, the upper die may fall out of the holder and cause an unexpected accident.

The present invention relates to a retaining device for preventing this accident.

As illustrated in the figure, the hydraulic device main body 1 is provided with an opposing face 1a at its upper end, and forms a U-shaped notch 1b with this as its upper side.

The upper die holder 2 is a gutter-like body with a lowering handle 2a on the upper surface, and is inserted into the notch 1b like a chopstick box lid.

Further, both parallel ends of the inner surface are provided with curved edges 2b.

The upper die 3 is also a gutter-like body with a mold formed on its inner surface, and is similarly inserted between the two convex edges 2b like a chopstick case lid.

The eccentric ring 4 is eccentrically provided with a shaft 4a, and is rotatably attached to both end surfaces of the holder 2 by this shaft.

However, the eccentric ring 4 has a pin 4 that can be secured to the top surface of the holder 2.
b is implanted, and the rotation angle range is limited.

If the pin 4b is engaged as shown in the figure, remove the upper die, and if it rotates in the direction of the hour hand and engages, release the retainer.

A wave washer 5 is inserted between the eccentric wheel and the end face of the upper die holder to brake the free rotation of the eccentric wheel 4.

Conventional methods are used to position the upper die inserted into the holder.

That is, an annular groove 3a is provided in the upper die, a radial hole is bored in the holder 2 corresponding to this, and the tip of the positioning pin 6 inserted into the hole is fixed in the annular groove 3a by the action of an attached spring (not shown). I'm letting you do it.

However, when the upper die is hardened by heat treatment, this annular groove is
It was difficult to set the pin 6 to a depth that would also serve to prevent it from coming out, since this would cause cracks to occur.

For this reason, in the past, there was virtually no prevention of slippage.

However, since this hydraulic equipment is often used on steel towers and utility poles, falling of the upper die could lead to fatal accidents for ground workers.

In contrast, the present invention is characterized in that it eliminates this concern by simply installing an eccentric wheel.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, and FIG. 2 is a perspective view of the wave washer. 1... Hydraulic equipment body, 1a... Citrus, 1
b...Cut, 2...Holder for upper die, 2a...Lower hand, 2b...Curved edge, 3
...... Upper die, 3a... Annular groove, 4.
...Eccentric wheel, 4a...Shaft, 4b...
...Pin, 5...Wave washers, 6...
···Positioning pin.

Claims (1)

[Scope of utility model registration request] A holder for a gutter-shaped upper die that is inserted into the citrus fruit in the shape of a chopstick box lid, and a gutter-shaped upper die holder that is also inserted into this holder in the shape of a chopstick box lid are provided at the upper end of the main body that includes the opposing citrus fruit. In a hydraulic device that moves the lower die forward and backward, an eccentric ring that can be rotated around the eccentric shaft is attached to both longitudinal sides of the upper die holder via wave washers, and the upper die can be moved forward or backward by selecting the angle phase of the eccentric ring. An upper die retaining device for a hydraulic machine that allows the die to be locked to or released from the holder.