KR100722877B1 - Fine blanking press - Google Patents

Abstract

The present invention relates to a two-piece prevention device for a fine blanking press, and relates to a two-part prevention device for a fine blanking press that prevents deformation during blanking due to foreign matter between the material and the mold when the mold is in operation. will be. Approach cylinders 20 are provided at both sides of the lower frame 11a, floating cylinders 30 contacting the upper surface of the approach cylinders 20 are provided at both sides of the main tube 12, and at one side of the approach cylinders 20. Up and down switching valve 40 and the two shot detection sensor 70 is connected, the check valve 80 is connected to one side of the floating cylinder 30, the pressure switching valve (50) on one side of the main cylinder (11) ) Is connected, the upper and lower surface plate (15, 13) to one side of the two rudder removal position sensor 60 is connected. Therefore, in the present invention, when the foreign material is caught between the material and the mold when the fine blanking mold is operated, deformation occurs during the blanking process, and thus, when the foreign material such as chips is caught in the mold in order to prevent this early, When the blank blanking mold is stopped at a different position, it is forcibly shut down to prevent machining, thereby preventing deformation in advance.

Fine blanking mould, fine blanking 2 pieces, approach cylinder

Description

Fine Blanking Press 2 Pieces Prevention Device {Fine Blanking Press}

1 is a schematic configuration diagram showing an operating state of a general fine blanking press.

Figure 2 is a block diagram of a fine blanking mold apparatus combined with a two-piece prevention device of the fine blanking press according to the present invention.

Figure 3 and Figure 4 is an embodiment of a fine blanking mold apparatus combined with the two shot prevention device of the fine blanking press according to the present invention.

5 is a perspective view showing a two-piece prevention apparatus of the fine blanking press according to the present invention.

Figure 6 is a front view showing a two shot prevention device of the fine blanking press according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: mold apparatus 11: main cylinder

12: main tube 13: bottom plate

14: upper and lower mold 15: upper and lower mold

16: V-ring cylinder 18: material

19: Scrap 20: Approach Cylinder

21: safety tube 22: tube

23: rod 24: head cover

25: road cover 26: safety cover

27: safety dog 30: floating cylinder

40: up, down switching valve 50: pressure switching valve

60: 2 shot removal sensor 70: 2 shot detection sensor

80: check valve 81: spring

The present invention relates to a device for preventing two shots of a fine blanking press, and more particularly, to a two-shot shot of a fine blanking press that prevents deformation during blanking because foreign matter is caught between the material and the mold when the mold is in operation. It relates to a prevention device.

In general, the press mold technology is a mold for forming sheet metal by using a press, which is also used as a functional part, but often performs a function of maintaining the appearance of the product.

Various types of presses are used to form the sheet metal as described above, but a shear mold is usually used, and the shear mold produces a desired planar shape by shearing and removing the sheet metal in the thickness direction. Shearing the metal material with the shearing mold is very similar to cutting the paper with a pair of scissors up and down, but when the material is inserted between the punch and the die and the punch moves, the punch presses the material and the stress is concentrated at the edge of the blade. The material is sheared and broken so that the material is finally separated.

In the shearing process as described above, it is very important to obtain a clean shear surface. In general, shearing of thin sheets is possible, but shearing of a product having a predetermined thickness such as gear is not easy.

In addition, in general, a blanking or stamping operation produces parts having a shear surface in which only a part is cleanly sheared and the remaining part is roughly fractured.

Tolerances or conditions for good surface treatment are required for the sheared / broken surfaces, and the parts have to be reworked by milling, reaming, broaching or grinding.

A fine blanking press is used to improve the above problems, and the fine blanking press is generally obtained by applying a compressive stress using various types of protrusions around a material to obtain a clean shear surface. At least two or more subsidiary operations are often required for each part, and fine blanking presses are sheared cleanly over the entire thickness of the material, so that precise parts with internal and external shapes can be produced in a single process. In addition to obtaining precise products, production costs can be reduced.

In addition, the product to which the fine blanking press technology is applied is a lot of subsequent processes are applied when processing in a general press blanking that requires precision for the purpose of use, mainly functional parts of automobiles, compressor parts of refrigerators, electrical and electronic structural parts, general Parts that require both precision and surface quality of the product, such as mechanical elements, are required.

The operation relationship of the general fine blanking press as described above will be described with reference to the drawings as follows.

FIG. 1 is a schematic configuration diagram illustrating an operation state of a general fine blanking press, in which a workpiece 100 for producing a mold product is configured and a fine blanking die 110 accommodating the workpiece 100. Is provided, the fine blanking compression plate 120 for compressing the workpiece 100 accommodated in the fine blanking die 110 is configured, the workpiece 100 is compressed to a predetermined pressure, the fine blanking Since the fine blanking ejector 112 and the main punch 122 for forming the workpiece 100 pressed onto the compression plate 120 exert pressure to correspond to each other at a high pressure, the front end of the workpiece 100 This is done completely.

However, when foreign matter is caught between the fine blanking die, the fine blanking compression plate, and the workpiece as described above, a problem occurs that deformation of the workpiece occurs during blanking.

In order to solve the above problems, in the present invention, if foreign matter is caught between the material and the mold when the fine blanking mold is operated, deformation occurs during the blanking process. It is an object of the present invention to provide a two-piece prevention device of the fine blanking press forcibly stops the processing when the fine blanking mold is stopped at a different position than the original position.

In the structure to achieve the purpose,

Approach cylinders are provided on both sides of the lower frame, floating cylinders in contact with the upper surface of the approach cylinders are provided on both sides of the main tube, and one side of the approach cylinders is connected with a rising / falling switching valve and two shot detection sensors. The check valve is connected to one side, the pressure switching valve is connected to one side of the main cylinder, the two valve removal position sensor is connected to one side of the upper and lower plate.

As another feature of the present invention, the approach cylinder is provided with a rod in the vertical direction by the safety cover is coupled to the inner side of the safety-shaped safety tube, the tube is inserted into the rod and the upper and lower ends of the head cover and the rod cover Each is coupled, the safety dog is provided on one side of the lower end of the rod.

As another feature of the present invention, the pressure switching valve is operated after detecting two sheets as a switching valve of the main cylinder, detecting the slide position of the two-barrel removal position sensor, and the two-barrel removal position sensor is The detection is controlled by the thickness or the mold, but is set downward by about 0.1 to 0.2 mm from the positioning of the pressure switching valve.

As another feature of the present invention, the two-stroke detection sensor detects a change in the position of the approach cylinder ram and the slide, and the floating cylinder is floated in a dimension of increased pressure by a spring of the check valve.

Figure 2 is a block diagram of a fine blanking mold apparatus combined with a two-plate prevention apparatus of the fine blanking press according to the present invention, Figure 3 and Figure 4 is a combination of the two-sheet prevention apparatus of the fine blanking press according to the present invention An embodiment of a fine blanking mold apparatus, Figure 5 is a perspective view showing a two-sheet prevention device of the fine blanking press according to the invention, Figure 6 is a front view showing a two-sheet prevention device of the fine blanking press according to the present invention. .

Hereinafter, the components will be described with reference to the drawings.

FIG. 2 is a configuration diagram of a mold apparatus in which two shot prevention devices of the fine blanking press of the present invention are coupled, and the mold apparatus 10 includes a main tube on an upper side of the main cylinder 11 having lower frames 11a at both sides thereof. (12), the upper and lower molds 14 and the V-ring cylinder 16 are provided in sequence, and the upper and lower molds 14 and 15 are coupled to the upper and lower sides, respectively, The upper frame 16a is provided at both sides of the ring cylinder 16.

Approach cylinder 20 of the present invention is provided in the main cylinder 11, the approach cylinder 20 is provided on both sides of the lower frame (11a) of the main cylinder 11, as shown in Figure 3, the approach cylinder 20 Floating cylinder 30 is in contact with the upper surface is provided on both sides of the main tube 12, the approach cylinder 20, one side of the up and down switching valve 40 and two shot detection sensor 70 is connected, A check valve 80 is connected to one side of the floating cylinder 30, and a pressure switching valve 50 is connected to one side of the main cylinder 11, and two shots are removed to one side of the upper and lower plates 15 and 13. The sensor 60 is connected.

The up and down switching valve 40 controls the approach cylinder 20 with a slide up and down switching valve, and the pressure switching valve 50 is a switching valve of the main cylinder 11 to operate after detecting two sheets. The slide position of the two-stroke removal position sensor 60 is detected, and the two-stroke removal position sensor 60 is controlled by the thickness of the material 18 or the mold, but the pressure switching valve ( It is set downward by 0.1 ~ 0.2mm than the positioning of 50).

The two shot detection sensor 70 detects a change in the position (H dimension) of the approach cylinder 20 ram and the slide, and the floating cylinder 30 is driven by a spring 81 of the check valve 80. The slide is plotted with the pressure H increased in dimension.

Referring to FIG. 3 and FIG. 4, the embodiment of the mold apparatus combined with the two-sheet prevention device of the fine blanking press is as follows.

If the scrap 19 is caught between the upper and lower molds 14 and the material 18 while the slide is being raised, the spring 81 is activated when an abnormal pressure is generated and the H dimension moves to the position of h. When the two shot detection sensor 70 detects.

For example, if the movement amount is about 0.5 mm and the two shot detection sensor 70 detects the main cylinder 11, the pressure switching valve 50 does not enter the pressure, the valve of the approach cylinder 20 is lowered. The slide is lowered down by the operation, and the two shot detection sensors 70 are set with the approach cylinder 20 under the slide and are installed on both right and left sides and operated by the detected sensors.

The pressure regulating valve of the floating cylinder 30 can be adjusted little by little by the slide weight (fixed), the lower mold weight (change), or the rapid rising speed of the slide.

The approach cylinder 20 is provided with a safety cover 26 is coupled to the inner side of the safety tube 21 of the U-shaped safety tube 21, as shown in the perspective view of FIG. The head cover 24 and the rod cover 25 are respectively coupled to the upper and lower ends of the tube 22 into which the 23 is inserted, thereby preventing the tube 22 from being detached during the vertical movement of the rod 23. A safety dog 27 is provided at one side of the lower end of the rod 23 so that the rod cover 25 does not collide with the safety cover 26 during the vertical movement of the rod 23. , The connector 41 is connected to the hose of the down conversion valve 40 is provided.

Therefore, in the present invention, when the chip is stuck in the mold and stops at a different position from the original position, the operation is forcibly stopped so as not to be processed.

While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as set forth in the appended claims. Anyone can grow up easily.

As described above, in the present invention, when foreign matter is caught between the material and the mold when the fine blanking mold is operated, deformation occurs during the blanking process, so that foreign matter such as chips may be caught in the mold to prevent this early. In this case, when the fine blanking mold is stopped at a different position than the original position, it is forcibly stopped to prevent machining, thereby preventing deformation in advance.

Claims (4)

Fine blanking in which the main tube 12, the upper and lower molds 14, the upper and lower plates 15 and 13, and the V-ring cylinders 16 are sequentially provided on the upper side of the main cylinder 11 provided with the lower frame 11a. In the two shot prevention device of the press, Approach cylinders 20 are provided at both sides of the lower frame 11a, and floating cylinders 30 contacting the upper surfaces of the approach cylinders 20 are provided at both sides of the main tube 12, and one side of the approach cylinders 20 is provided. The up and down switching valve 40 and the two shot detection sensor 70 is connected, the check valve 80 is connected to one side of the floating cylinder 30, the pressure switching valve on one side of the main cylinder (11) 50 is connected, the upper and lower surface plate (15, 13), the two-sheet removal position sensor 60 is connected to one side of the fine blanking press prevention device of the fine blanking press, characterized in that connected. The method of claim 1, The approach cylinder 20 is provided with a rod 23 in the vertical direction by the safety cover 26 is coupled to the inner side of the safety tube 21, the tube 22, the rod 23 is inserted into the inside And a head cover 24 and a rod cover 25 are respectively coupled to upper and lower ends of the tube 22, and two safety blanking presses are provided on one side of the lower end of the rod 23. Outbreak prevention device. The method of claim 1, The pressure switching valve 50 is operated after the detection of two sheets as a switching valve of the main cylinder 11, and detects the slide position of the two-seat remover position sensor 60, the two-seat remover position sensor 60 ) Is controlled by the thickness of the material 18 or the mold, but the two-piece prevention device of the fine blanking press, characterized in that it is set to about 0.1 ~ 0.2mm downward than the positioning of the pressure switching valve (50). . The method of claim 1, The two shot detection sensor 70 detects a change in the position (H dimension) of the approach cylinder 20 ram and the slide, and the floating cylinder 30 is driven by a spring 81 of the check valve 80. A device for preventing the two shots of a fine blanking press, characterized in that the slide is floated in the increased pressure (H).

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