JPH0565499U - Safety device in press machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a safer device for a press machine with a simple structure and more safety. [Structure] In a press machine A in which a lower mold 2 is disposed on a bed base 1 and an upper mold 4 is vertically hung on a lift plate 3, a safety block 5 is provided on one side of the bed base 1 on the head. The provided slide body 6 is slidably provided, and a control unit 7 is set so that the safety block 5 is interposed between the elevator board 3 and the bed base 1 when the elevator board 3 reaches the vicinity of the top dead center.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety device for a press having a simple structure.

[0002]

[Problems to be solved by conventional techniques and devices]

 With regard to the safety device of the press machine, when lowering the elevator, the two-handed safety device in which the elevator does not move downward unless both left and right pushbuttons for lowering the elevator are pressed at the same time. A guard is provided on the front of the mold so that the upper mold and the lower mold are covered with this guard, and the elevator does not descend unless the lowering push button is pressed. And a photoelectric switch in the bed base, and a light-type safety device that stops the lowering of the elevator immediately when the emitted light beam is blocked by the insertion of a hand or finger between the upper and lower molds. , Various safety devices have been implemented.

However, a precision press for a substrate having a predetermined pattern such as a printed circuit board is extremely reluctant to have scratches or dents on the surface, and therefore, the elevator plate moves up after the press to approach the top dead center, and When the printed circuit board is pulled out from the upper mold by the knockout plate attached to the mold, be sure to pick it up by hand to prevent it from falling and damage, or set the unprocessed printed circuit board in the lower mold. Since it is necessary to carefully set it in the lower mold, the time required to reach between the upper mold and the lower mold is much longer than that of other metal stamping work, and the worker is I was anxious for the emergence of safe measures.

The present invention aims to solve the above-mentioned anxiety and to provide a safety device of a press machine capable of performing a press work with peace of mind.

[0005]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

In the press machine A in which the lower mold 2 is arranged on the bed base 1 and the upper mold 4 is hung vertically on the elevator board 3, a head side safety block 5 is provided on one side of the bed base 1. The control unit 7 is provided so that the sliding body 6 provided with the above is slidably provided, and the safety block 5 is interposed between the elevator board 3 and the bed base 1 when the elevator board 3 reaches the vicinity of the top dead center. The present invention relates to a safety device in a press machine characterized by being installed.

[0007]

[Action]

 When the elevator board 3 rises and reaches the vicinity of the top dead center, the safety block 5 of the sliding body 6 provided on one side of the bed base 1 slides according to a command from the control unit 7 to slide the elevator board 3 and the bed base. It is interposed between the board 1 and the board.

[0008]

【Example】

 The drawings illustrate preferred embodiments of the present invention.

A description will be given below.

In a press machine A for a printed circuit board, in which a lower die 2 is arranged on a bed base 1 and an upper die 4 is vertically installed on a lift plate 3, a head is provided on one side of the bed base 1. A sliding body 6 provided with a safety block 5 is slidably provided.

The drawings show the case where a compound die for punching the outer periphery of the printed board 8 and punching in one step to make a product is used for the upper die and the lower die.

The sliding body 6 is composed of a pneumatic / hydraulic cylinder, an electric cylinder, or the like, and the safety block 5 is fixed to the tip of the piston rod 6 ′ of the sliding body 6.

A control unit 7 is provided so that the safety block 5 is interposed between the elevator 3 and the bed base 1 when the elevator 3 reaches the vicinity of the top dead center.

When the elevator board 3 rises and reaches the vicinity of the top dead center, the piston rod 6 ′ of the sliding body 6 slides according to a command from the control unit 7, and the safety block 5 moves the safety block 5 to the elevator board 3 and the bed base 1. A photoelectric sensor (not shown) is provided to detect the interposition of the safety block 5, and the safety block 5 is interposed between the elevator board 3 and the bed base 1 by the operation of the photoelectric sensor. At this time, the elevator board 3 is interlocked so that it cannot be lowered, so that the worker can carry out the work by inserting his / her hand between the upper and lower molds without anxiety.

Safer measures are taken.

After taking out the product between the upper and lower molds and setting the next press material in the lower mold, press the safety block return push button (not shown) to move the safety block 5 to the bed base 1 When it is retracted to one side, the detection of the photoelectric sensor is canceled and the interlock is released, so if you press the left and right lift board lowering push buttons provided on the operation panel simultaneously with both hands, the lift board 3 will move down. However, press work will be performed.

In the figure, reference numeral 9 is a clamp mechanism for detachably clamping the mold to the bed base 1 or the elevator board 3, 10 is a male guide attached to the lower mold, and 11 is a female attached to the upper mold. It is a guide.

[0018]

[Effect of the device]

 As described above, according to the present invention, the safety block is arranged to intervene between the elevator and the bed base when the elevator moves up and reaches the vicinity of the top dead center. In addition to a certain safety device, the safety can be visually confirmed, and even if the ascending / descending board descends, this block serves as a support, enabling workers to perform press work with peace of mind. Is a safer and more reliable safety device for press machines.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

[Explanation of symbols]

 A Press machine 1 Bed base 2 Lower mold 3 Lifting plate 4 Upper mold 5 Safety block 6 Sliding body 7 Control unit

Claims (1)

[Scope of utility model registration request] 1. A press machine in which a lower die is disposed on a bed base and an upper die is vertically mounted on an elevator board, and a sliding body having a safety block on a head is provided on one side of the bed base. A safety device for a press machine, comprising a control unit which is provided slidably and is set so that the safety block is interposed between the elevator board and the bed base when the elevator board reaches the vicinity of the top dead center.