KR200425878Y1 - Press safety device - Google Patents

Abstract

By having a light emitting means that is fixed by a magnet and the length is changed up and down while the laser pointer is mounted, and similarly the light receiving means is fixed by a magnet and the length is changed up and down and the conventional CDS sensor is mounted, a part of the body of the worker When the CDS sensor detects a change in brightness due to contact with the laser light, the press is not operated to prevent the accident of the operator in advance and the width of the light emitting means and the light receiving means can be quickly adjusted according to the size of the workpiece. A safety device for a press is disclosed. The light emitting means according to the present invention includes a light emitting support having a first stage made of a magnet and a first fixed insertion tube screwed to an upper portion of the first stage, a first control tube variably coupled to a height of the light emitting support; It has a light-emitting moving part having a first mechanism mounting tube coupled to the first control tube variably in height and a conventional laser pointer mounted to the first instrument mounting tube, the light receiving means is a second stage and the first A light receiving support having a second fixed insertion tube screwed to an upper portion of the second stage, a second adjusting tube variably coupled to a light receiving support and a second mechanism variably coupled to a second adjusting tube A conventional CDS sensor mounted on the light receiving unit having the mounting tube and the second instrument mounting tube and detecting the brightness of the laser light emitted from the laser pointer is provided. It is.

Description

Safety device for press {PRESS SAFETY DEVICE}

1 is a view showing a safety device mounted on a conventional press 1

2 is a view showing a state mounted on the press equipped with a safety device for a press according to the present invention

3A is a cross-sectional view showing the interior of the light emitting means shown in FIG.

3B is a cross-sectional view illustrating the interior of the light receiving unit shown in FIG. 2.

Explanation of symbols on the main parts of the drawing

100: safety device for press 110a: light emitting means

110b: light receiving means 112a: light emitting support

112b: light receiving support portion 114a: light emitting moving portion

114b: light receiving unit 116a: first stage

116b: second stage 118a: first fixed insertion tube

118b: second fixed insertion tube 126a: first control tube

126b: 2nd control tube 128a: 1st apparatus mounting pipe

128b: second instrument mounting tube 150: laser pointer

160: CDS sensor

The present invention relates to a safety device for a press, and more particularly, the light emitting means is mounted by a laser pointer while the length is changed up and down while being fixed by a magnet, and the length of the vertical CD while being fixed up and down by a magnet like a conventional CDS When the sensor is equipped with a light receiving means, when the body part of the worker is in contact with the laser light and the change of the brightness of the CDS sensor is detected, the press is not operated to prevent the accident of the operator in advance as well as the size of the workpiece In accordance with the present invention relates to a safety device for a press that can quickly adjust the width of the light emitting means and the light receiving means.

In general, the ram holding the upper mold in the press performs vertical movement of lifting and lowering by the operation of the crank shaft or the eccentric shaft to process the workpiece placed on the lower mold. The operator repeats a series of manual and machine strokes, which push the workpiece into the lower mold and separate it out again.

1 is a view showing a safety device mounted on a conventional press. Referring to Figure 1, the conventional safety device for press 10 is fixedly mounted on both sides of the front surface of the workbench 4 is mounted on the lower mold (M2) facing the ram (2) is equipped with the upper mold (M1). The safety device 10 includes a supporter 12 disposed vertically on both sides of the front surface of the work table 4, a light emitter 14 and a light receiver 16 mounted on the supporter 12 so as to face each other, and a light receiver ( 16) a sensing means (not shown) for detecting the body part of the operator according to whether the light signal of the light emitter 14 is shielded or incident, and the lifting and lowering of the ram 2 in accordance with the detection signal of the sensing means It is composed of a main control unit (not shown) which stops or operates normally.

However, the above-described conventional safety device 10 is because the light emitter 14 and the light receiver 16 are mounted on the supporter 12 disposed on both sides of the front surface of the work table 4, the width of the workpiece is wide or the length of the workpiece. In the case of long, there was a problem that the entry is hindered by the supporter 12.

In addition, the detection position should be changed quickly according to the size of the workpiece, the conventional light emitter 14 and the light receiver 16 can not be quickly changed the detection position because it must be separated from the supporter 12 and reassembled. There was a problem.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is to be fixed by the magnet and the length is changed up and down while the laser pointer is mounted, as well as fixed by the magnet up and down By having a light receiving means equipped with a conventional CDS sensor while the length is variable, if a part of the body of the worker is in contact with the laser light and the change of the brightness of the CDS sensor is detected, the press is not operated to prevent the accident of the operator in advance. In addition to providing a safety device for a press that can be quickly adjusted the width of the light emitting means and the light receiving means according to the size of the workpiece.

In order to achieve the object of the present invention as described above, the present invention,

In the safety device for a press provided with a light emitting means and a light receiving means arranged to face each other on both sides of the upper surface of the work platform on which the lower mold is mounted while facing the ram equipped with the upper mold,

The light emitting means includes: a light emitting support having a first stage made of a magnet so as to be attached to one side of an upper surface of the work table, and a first fixed insertion tube screwed to an upper portion of the first stage; It has a light emitting moving part having a first fitting tube and a first mechanism mounting tube is slidably coupled to the first control tube and the first control tube to be coupled, and a conventional laser pointer mounted to the first instrument mounting tube,

The light receiving means includes: a light receiving support having a second stage made of a magnet so as to be attached to the other side of the upper surface of the work table, and a second fixed insertion tube screwed to an upper portion of the second stage; A light receiving unit having a second fitting tube and a second fitting tube that is slidably coupled to the second adjusting tube and the second adjusting tube to be coupled to the second fitting tube and detects the brightness of the laser light emitted from the laser pointer while being mounted on the second fitting tube. It provides a safety device for a press having a conventional CDS sensor.

As described above, according to the present invention, the light emitting means is mounted with a laser pointer while the length is changed up and down while being fixed by a magnet, and the CDS sensor is mounted while the length is changed up and down while being fixed by a magnet. With the light receiving means, when the body part of the worker is in contact with the laser light and the change of brightness is detected by the CDS sensor, the press is not operated to prevent the accident of the operator in advance and the light emitting means according to the size of the workpiece. And it is possible to quickly adjust the width of the light receiving means.

Hereinafter, a safety device for a press according to a preferred embodiment of the present invention with reference to the accompanying drawings.

2 is a view showing a state mounted on the press equipped with a safety device for a press according to the present invention.

Referring to FIG. 2, the safety device for press 100 according to the present invention faces the ram 2 on which the upper mold M1 is mounted, on both sides of the upper surface of the work surface 4 on which the lower mold M2 is mounted. The light emitting means 110a and the light receiving means 110b are disposed to face each other. In addition, the safety device for the press 100 is electrically connected to the light emitting means 110a and the light receiving means 110b, and the ram 2 mounted with the upper mold M1 according to the change of light detected by the light receiving means 110b. It further comprises a control means (not shown) for controlling the operation of the).

3A is a cross-sectional view showing the interior of the light emitting means shown in FIG. 2, and FIG. 3B is a cross-sectional view showing the interior of the light receiving means shown in FIG.

3A and 3B, the light emitting unit 110a includes a light emitting unit 112a and a light emitting unit 114a and a light emitting unit 114a which are slidably coupled to the light emitting unit 112a to have a variable height. A conventional laser pointer 150 is mounted. Similarly, the light receiving means 110b is slidably coupled to the light receiving support 112b having the same configuration as the light emitting support 112a and the light receiving support 112b while having the same configuration as the light emitting moving part 114a. A conventional CDS sensor 160 is mounted on the light receiving unit 114b and the light receiving unit 114b to detect a change in the laser light emitted from the laser pointer 150.

First, the light emitting support part 112a includes a first stage 116a attached to one side of the upper surface of the work table 4 and a first fixed insert screwed to the first stage 116a from the top of the first stage 116a. The tube 118a is provided. Similarly, the light receiving support 112b has a second stage 116b attached to the other side of the upper surface of the work table 4 and a second fixed insertion tube screwed to the second stage 116b from the top of the second stage 116b. 118b. The first stage 116a and the second stage 116b are made of ordinary magnets. On the other hand, the first fixed insertion pipe 118a and the second fixed insertion pipe 118b have a shape in which the inside is hollow and the top is open. A first through hole 120a and a second through hole 120b are formed at side surfaces adjacent to the lower portions of the first fixed insertion pipe 118a and the second fixed insertion pipe 118b, and the first fixed insertion pipe 118a. And the first screw hole 122a and the second screw hole 122b are formed at the side adjacent to the upper portion of the second fixing insertion pipe 118b, and the first screw hole 122a and the second screw hole 122b are formed. The first fixing screw 124a and the second fixing screw 124b are fastened thereto. The light emitting support part 112a and the light receiving support part 112b thus formed are mounted with the light emitting moving part 114a and the light receiving moving part 114b.

The light emitting moving part 114a is inserted into the first fixed insertion pipe 118a, and the height of the first control tube 126a is changed up and down, and the height is changed up and down while being inserted into the first control tube 126a. A first instrument mounting tube 128a having a laser pointer 150 therein is provided therein. Similarly, the light receiving moving part 114b is inserted into the second fixed insertion tube 118b, and the height of the second control tube 126b is variable up and down, and the height is changed up and down while being inserted into the second control tube 1126b. In addition, there is provided a second instrument mounting tube (128b) in which the CDS sensor 160 is built.

The first control pipe 126a and the second control pipe 126b have a hollow shape and an open upper portion. The first control pipe 126a and the second control pipe 126b have a first fixing screw ( It is fixed to the 1st fixed insertion pipe 118a and the 2nd fixed insertion pipe 118b by 124a) and the 2nd fixed screw 124b. The third through hole 130a and the fourth through hole 130b are formed on the lower surfaces of the first control pipe 126a and the second control pipe 126b, and the first control pipe 126a and the second control pipe 126a are formed. A third screw hole 132a and a fourth screw hole 132b are formed at a side adjacent to the upper portion of the upper portion 126b, and a third fixing screw 134a is formed in the third screw hole 132a and the fourth screw hole 132b. ) And the fourth fixing screw 134b are fastened. On the other hand, the first instrument mounting tube (128a) and the second instrument mounting tube (128b) has a shape that is hollow inside and penetrated the upper and lower, such a first instrument mounting tube (128a) and the second instrument mounting tube 128b is fixed to the first control pipe 126a and the second control pipe 126b by the third fixing screw 132a and the fourth fixing screw 132b. On the facing surfaces of the first instrument mounting tube 128a and the second instrument mounting tube 128b, an irradiation hole 136a to which the laser light is irradiated and a sensing hole 136b to detect the laser light are formed, respectively. Each side of the first instrument mounting tube 128a having the 136a and the second instrument mounting tube 128b having the sensing hole 136b is formed so as not to interfere with the irradiation hole 136a and the sensing hole 136b. A fifth screw hole 138a and a sixth screw hole 138b are formed, and the fifth screw hole 138a and the sixth screw hole 138b are fixed to the fifth laser hole 150 and the CDS sensor 160. The fixing screw 140a and the sixth fixing screw 140b are fastened.

Meanwhile, the first wire 152 extending from the laser pointer 150 is connected to the control means through the third through hole 130a and the first through hole 120a and is extended from the CDS sensor 160. The wire 162 is connected to the control means through the fourth through hole 130b and the second through hole 120b.

The following briefly describes the state of use of the safety device for press 100 formed as described above.

First, the light emitting means 110a is disposed on one side of the upper surface of the work table 4, and the light receiving means 110b is disposed on the other side of the upper surface of the work table 4. At this time, the light emitting means 110a and the light receiving means 110b are fixedly attached to the work table 4 by the first stage 116a and the second stage 116b made of magnets, and according to the size of the workpiece to be processed. Is fixedly attached to the worktable 4 by adjusting the distance between the light emitting means 110a and the light receiving means 110b as appropriate.

When the light emitting means 110a and the light receiving means 110b are fixedly attached to the work table 4 as described above, the CDS sensor 160 sensing the brightness of the light of the laser pointer 150 and the laser pointer 150 higher than the height of the workpiece. ) Adjust the height. To this end, firstly, the first adjusting pipe 126a and the second fixing screw 124a and the second fixing screw 124b are released from the first screw hole 122a and the second screw hole 122b. After adjusting the adjustment pipe 126b to a desired height, the first fixing screw 124a and the second fixing screw 124b are fastened to the first screw hole 122a and the second screw hole 122b. Let's do it. At this time, the first fixing screw 124a and the second fixing screw 124b are fastened by the first screw hole 122a and the second screw hole 122b, and the first adjusting pipe 126a and the second adjusting pipe 126b. G)).

As described above, when the heights of the first control pipe 126a and the second control pipe 126b are adjusted, the operator may selectively mount the first mechanism mounted on the first control pipe 126a and the second control pipe 126b. The height of the mounting tube 128a and the second instrument mounting tube 128b can be adjusted. Similarly, in order to adjust the height of the first instrument mounting tube 128a and the second instrument mounting tube 128b, the third fixing screw 134a and the fourth fixing screw 134b are released from the third screw hole 132a and the fourth screw hole 132b, and then the first instrument mounting tube 128a and the second mechanism mounting tube 128b are removed. After the operator adjusts the desired height, the third fixing screw 134a and the fourth fixing screw 134b are fastened to the third screw hole 132a and the fourth screw hole 132b. The third fixing screw 134a and the fourth fixing screw 134b are fastened to the third screw hole 132a and the fourth screw hole 132b while being fitted with the first instrument mounting tube 128a and the second instrument mounting tube 128b. In this case, the irradiation hole 136a and the detection hole 136b of the first instrument mounting tube 128a and the second instrument mounting tube 128b are adjusted to face each other.

When the press work is performed under the state in which the safety device 100 is mounted as described above, the laser light emitted from the laser pointer 150 is detected by the CDS sensor 160, and the brightness of the laser light is detected. If the laser light is not detected by the CDS sensor 160 by the operator's hand or the workpiece to put the safety device 100 stops the operation of the ram (2) equipped with the upper mold (M1).

As described above, the safety device for a press 100 according to the present invention is a work table 4 by the first stage 116a and the second stage 116b of which the light emitting means 110a and the light receiving means 110b are made of magnets. Since it is attached to), the coping ability according to the size of the workpiece is excellent.

In addition, the light emitting means 110a and the light receiving means 110b may be slidably mounted to the first fixed insertion tube 118a and the second fixed insertion tube 118b and the first adjusting tube 126a and the second adjusting tube ( 126b and a first mechanism mounting tube 128a and a second mechanism mounting tube 128b which are similarly slidably mounted to the first control tube 126a and the second control tube 126b, thereby emitting light. Height adjustment of the means (110a) and the light receiving means (110b) can be adjusted in the same manner as a conventional antenna method can quickly adjust the height of the light emitting means (110a) and the light receiving means (110b) according to the height of the workpiece.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention described in the utility model registration claims. It will be appreciated.

Claims (4)

In the safety device for a press provided with a light emitting means and a light receiving means arranged to face each other on both sides of the upper surface of the work platform on which the lower mold is mounted while facing the ram equipped with the upper mold, The light emitting means includes a light emitting support having a first stage made of a magnet so as to be attached to one side of the upper surface of the work table, and a first fixed insertion tube screwed to an upper portion of the first stage; A light emitting device having a first control tube variably slidably coupled to the first control tube and a first mechanism mounting tube slidably coupled to the first control tube and a conventional laser pointer mounted to the first device mounting tube. Has, The light receiving means includes a light receiving support having a second stage made of a magnet so as to be attached to the other side of the upper surface of the work table, and a second fixed insertion tube screwed to an upper portion of the second stage, In the laser pointer while being mounted to the second light receiving unit and the second mechanism mounting tube having a second control tube that is slidably coupled to the second control tube and the second mechanism mounting tube is variably sliding coupled to the second control tube; Safety device for a press, characterized by having a conventional CDS sensor for detecting the brightness of the laser light to be irradiated. According to claim 1, wherein the first fixed insertion tube and the second fixed insertion tube has a shape that is hollow inside, the top is open, the side adjacent to the lower portion of the first fixed insertion tube and the second fixed insertion tube A first through hole and a second through hole are formed therein, and a first screw and a second screw hole are formed on side surfaces adjacent to the upper portions of the first fixed insertion tube and the second fixed insertion tube, and the first screw hole and the The first screw and the second fixing screw for holding the first control tube and the second control tube is fastened to the second screw hole, the safety device for a press. The method of claim 1, wherein the first control pipe and the second control pipe has a shape that is hollow inside and open at the top, and the third through hole on the lower surface of the first control pipe and the second control pipe and A fourth through hole is formed, and a third screw hole and a fourth screw hole are formed at side surfaces adjacent to the upper portion of the first control pipe and the second control pipe, and the third screw hole and the fourth screw hole are formed in the third screw hole. 1 is a safety device for a press, characterized in that the third fixing screw and the fourth fixing screw holding the mechanism mounting pipe and the second mechanism mounting 돤 is fastened. The method of claim 1, wherein the first instrument mounting tube and the second instrument mounting tube has a hollow shape inside and through and the upper and lower parts, the first instrument mounting tube and the second instrument mounting tube facing the surface Irradiation holes to which laser light is irradiated and a sensing hole for detecting laser light are respectively formed thereon, and each of the first instrument mounting tube having the irradiation hole and the second instrument mounting tube having the sensing hole is formed at each side of the irradiation hole and the The fifth screw hole and the sixth screw hole are formed so as not to interfere with the sensing hole. The fifth screw hole and the sixth screw hole include a fifth fixing screw and a sixth fixing screw for fixing the laser pointer and the CDS sensor. Safety device for the press, characterized in that fastened.

Images