JPS5828660Y2 - Automatic lubrication device for press molds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically supplying oil to a press die.

Conventionally, oil was supplied directly to the press mold by a worker manually, but there was a risk of injury from the press during operation.

The present invention was created in view of this point, and is designed to remove the danger to the workers by automatically supplying oil even though the workers have to supply it.

The configuration of the present invention will be explained below based on the drawings showing one embodiment.

In Fig. 1, 1 is a ram installed in the press machine body, 2 is a lower mold also installed in the press machine body, and 3
4 is an upper die, and 4 is a punch attached to the lower surface of the upper die 3. As the ram 1 moves up and down, the upper die 3 and the punch 4 move up and down, thereby drilling a hole in the workpiece. It is something.

5 is a retractable cushion fitted and fixed on the outside of the punch 4, and 6 is an automatic oil supply device installed between the upper and lower molds 2 and 3.

Note that 7 is a return spring for returning the lowered upper mold 3 upward.

In the above, the automatic oil supply device according to the present invention is constructed as shown in FIG.

In the figure, 8 is a cylindrical oil reservoir chamber with a bottom, and the upper part is a lid plate 9a.

Oil supply port 10 closed by 9b and provided on the upper side surface
It is used to store oil sent from outside through the tank.

Reference numeral 11 denotes an oil supply cylinder hanging down from the lower surface of the cover plate 9a, and a suction port 12 for sucking oil from the oil reservoir chamber 8 is bored at the lower end thereof.

A piston 13 is fitted into this cylinder 11, and its rod 14 projects upward through openings 25 formed in the cover plates 9a and 9b, and a backing plate 16 provided at the tip of the rod 14 is inserted into the upper mold. It is designed to come into contact with the bottom surface of 3.

Therefore, this piston 13 reciprocates up and down as the upper mold 3 moves up and down.

Note that the bottom portion 18 of the oil reservoir chamber 8 is fixed to the lower mold 2 with screws 1T.

Further, the above-mentioned backing plate 16 may be fixed to the upper mold 3.

19 is a ball valve provided at the suction port 12, and the ball valve 1
A one-way valve 21 that is biased to close the suction port 12 by a valve spring 20 interposed between the valve spring 9 and the lower surface of the piston 13 and opens only in the direction in which oil is sucked from the oil reservoir chamber 8 is constructed. There is.

Furthermore, an oil reservoir 15 is drilled in the piston 13 and the piston rod 14 to guide the oil sucked into the cylinder 11 to the outside, and the oil is sent to a predetermined location through a supply pipe 23 etc. attached to the outlet section 22. (1st
(see figure).

Note that 24 is an O-ring provided on the outer periphery of the piston 13.

Since the configuration is as described above, first, when the upper mold 3 descends, the piston 13 is pressed by the upper mold 3 and moves into the cylinder 1.
Descend within 1.

At this time, since the suction port 12 is closed by the one-way valve 21, the oil in the cylinder 11 passes through the oil container 15 and is ejected from the pipe 23 or the like to a predetermined location.

Next, when the upper mold 3 rises, the piston 13 also rises inside the cylinder 11, and the oil in the oil reservoir chamber 8 is sucked into the cylinder 11 through the suction port 12.

In this way, oil is automatically supplied to predetermined locations in the mold.

The present invention has the above-mentioned structure, and in particular, the upper end of the rod of the piston or the oil reservoir chamber is fixed to the mold, and the piston is reciprocated by the reciprocating motion of the upper mold, and the oil reservoir provided inside the piston is Since the system automatically supplies oil to predetermined locations using a tumbler, there is no need for workers to supply oil to the designated locations, thus eliminating the risk of accidental injury and preserving the structure as it was before. It has remarkable effects such as being simple and extremely inexpensive to manufacture.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the device of the present invention attached to a mold, and FIG. 2 is a longitudinal sectional view of the device of the present invention. 2...Lower mold, 3...Upper mold, 8...
... Oil reservoir chamber, 11 ... Oil supply cylinder, 12 ... Oil inlet, 13 ... Piston, 14 ... Rod, 15.・・・・・・Oil filled,
21...One-way valve, 22...Outlet section, 23...Pipe

Claims (1)

[Claims for Utility Model Registration] 1. Consists of an oil reservoir chamber and an oil supply cylinder facing the oil reservoir chamber, and an oil suction port provided in the supply cylinder receives oil from the oil reservoir chamber. A one-way valve that opens only in the suction direction is provided, an oil hole is provided in the piston inserted into the cylinder to communicate the inside of the cylinder with the outside, and the upper end of the rod of this piston or the oil reservoir chamber is connected to the An automatic oil supply device for a press mold, characterized in that the piston is fixed to the mold and reciprocated by the reciprocating movement of the upper mold. 2. A pipe is connected to an oil-sized outlet portion formed on the piston. An automatic lubrication device for a press mold according to claim 1, wherein the oil is guided at a predetermined position 1.