Die structure for horizontal perforation

Abstract

To provide a die structure for horizontal perforation that can prevent a punch from being deviated from a processing position or broken due to a surface inclination and a shape of a processing target when the horizontal perforation is performed using the punch.SOLUTION: A die structure for horizontal perforation includes: a die which is arranged on a lower die and on which a workpiece is placed; a perforation module configured to be separated from / brought into close contact with the upper die when the die is opened / closed; a punch arranged on the perforation module and configured to perforate the workpiece; a cam drive formed protruding on a lower part of the upper die and configured to move the punch.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a die structure for horizontal hole machining, and more particularly to a die structure for horizontal hole machining, which prevents a punch from leaving a machining position due to the surface inclination and shape of a workpiece, thereby achieving high precision and quality in horizontal hole machining, and which is easy to remove the workpiece after machining, since a punch-like structure is completely lifted from a lower die in a modular form. [Background Art]

[0002] Generally, shock absorbers are used to improve the ride quality by suppressing vibrations and shocks transmitted to a vehicle body through wheels using the elastic force of a coil spring and hydraulic pressure in a piston.

[0003] At this time, in order to stably support the coil spring while minimizing the intrusion of foreign objects such as stones, sand, and snow removal agent, a spring seat is placed on the end of the coil spring.

[0004] Such spring seats are formed by drilling holes in the process of processing the steel plate into a specified shape, and press processing using a cam slider structure has been mainly used, as in the "Inclined portion forming member of a press die for sheet metal processing" in Korean Utility Model Publication No. 20-2000-0007870.

[0005] However, as shown in FIG. 1, there is a problem that the punch 12 may come off the processing position due to the surface inclination and shape of the workpiece 100, or the punch may be damaged or deformed as shown by 12a.

[0006] In recent years, the spring seats of shock absorbers used in high-load electric vehicles are required to have higher rigidity, and as high-tensile steel is used instead of general steel plates, the number of punches coming off or being damaged is increasing significantly.

[0007] In particular, in the structure of a normal cam slider in which a cam slide and a punch are arranged on the lower die, when making a hole in a spring sheet having a flange, the length of the punch increases, and there is more concern about the detachment and breakage of the punch.

[0008] In addition, the spring sheet having a flange has problems such as being caught by the long punch during extraction or the extraction path becoming long.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0010] The object of the present invention is devised to solve the above-mentioned problems, and to provide a die structure for horizontal hole machining for preventing the punch from detaching from the machining position or being damaged due to the surface inclination and shape of the machining object when performing horizontal hole machining using the punch.

[0011] Another object of the present invention is to provide a die structure for horizontal hole machining for preventing the flange from being caught by the punch or the extraction path from becoming long when taking out a machining object having a flange after hole machining.

Means for Solving the Problems

[0012] In order to achieve the above object, the horizontal hole processing die structure according to the present invention is characterized by including a die disposed in a lower die on which a processing object is placed, a processing module disposed in a lower part of an upper die and separated or attached to the upper die by opening and closing the die, a punch part disposed in the processing module for processing a hole in the processing object, and a cam drive formed protruding from a lower part of the upper die for transferring the punch part.

[0013] Furthermore, the punch part is characterized by including a cam slide installed in the processing module so as to be slidably transferred toward the processing object, and a punch protruding and fixed to a front surface of the cam slide.

[0014] Furthermore, the punch part is characterized by including a return part disposed in an upper part of a front surface of the cam slide for returning the transferred cam slide.

[0015] The die further includes a die body formed according to the shape of the inner peripheral surface of the workpiece, and a die guide for supporting an edge of a hole processing area in a form in which the punch of the punch part is inserted at a predetermined depth.

[0016] The die further includes a punch guide having a guide hole formed therein for guiding the punch in a state of surrounding the outer peripheral surface of the punch while the punch performs hole processing by being in close contact with the surface of the workpiece to prevent the punch of the punch part, which is disposed in the processing module and transferred by a cam drive, from leaving the processing position due to the surface inclination and shape of the workpiece.

[0017] Furthermore, the punch units are arranged radially around the workpiece in the processing module, and the punch guide is formed with guide holes in the direction of each punch unit in a ring shape surrounding the workpiece. [Effects of the Invention]

[0018] As described above, according to the die structure for horizontal hole machining according to the present invention, by aligning the position of the punch until the punch completes the hole machining using the punch guide in close contact with the surface of the object to be machined, there is an effect that the punch can be effectively prevented from detaching from or being damaged at the machining position.

[0019] Further, according to the die structure for horizontal hole machining according to the present invention, after the hole machining is completed, the punch and the components for operating the punch are lifted by the upper die in a modular form, leaving only the object to be machined in the lower die. Therefore, there is an effect that the object to be machined can be easily taken out and the flow line can be shortened.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

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Figure 9

Embodiments for Carrying Out the Invention

[0021] The specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are merely exemplified for the purpose of explaining the embodiments according to the concept of the present invention. The embodiments according to the concept of the present invention can be implemented in various forms and are not limited to the embodiments described in this specification.

[0022] Since various changes may be made to the embodiments according to the concept of the present invention and they may have various forms, the embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, but includes all changes, equivalents, or alternatives included in the spirit and technical scope of the present invention.

[0023] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings as follows.

[0024] FIG. 2 is a view showing a mold structure for horizontal hole machining according to the present invention, FIG. 3 is a view showing a punch portion of the mold structure for horizontal hole machining according to the present invention, FIG. 4 is a view showing a state where the machining module of the mold structure for horizontal hole machining according to the present invention is in close contact with the lower mold, FIG. 5 is a view showing a state where the upper mold of the mold structure for horizontal hole machining according to the present invention has completely descended, FIG. 6 is a view showing the lower part of the machining module of the mold structure for horizontal hole machining according to the present invention, FIG. 7 is a view showing a state where the fixing plate is removed from the machining module of the mold structure for horizontal hole machining according to the present invention, FIG. 8 is a view showing a state where the fixing bar is removed from the machining module of the mold structure for horizontal hole machining according to the present invention, and FIG. 9 is a view showing a state where the cam slide is removed from the machining module of the mold structure for horizontal hole machining according to the present invention.

[0025] As shown in FIG. 2 or FIG. 3, the mold structure for horizontal hole machining according to the present invention includes a die 3 disposed in the lower mold 1 on which a workpiece to be machined (not shown) is placed, a machining module 4 disposed below the upper mold 2 and separated from or adhered to the upper mold 2 by opening and closing the molds 1 and 2, a punch portion 5 disposed in the machining module 4 for machining a hole in the workpiece to be machined, and a cam drive 6 formed to protrude below the upper mold 2 for transferring the punch portion 5.

[0026] Furthermore, when the mold is in the open state, the machining module 4 is separated from the upper mold 2 by a predetermined distance. When the upper mold 2 descends, the lower surface of the machining module 4 first adheres to the lower mold 1, and then the upper mold 2 continues to descend and adheres to the upper surface of the machining module 4 for mold alignment.

[0027] In such a mold alignment process, the cam drive 6 protruding below the upper mold 2 drives the punch portion 5 disposed inside the machining module 4, and the punch portion 5 performs hole machining on the workpiece in the horizontal direction.

[0028] When the hole machining is completed, as the upper mold 2 ascends, the upper mold 2 is separated from the machining module 4 by a predetermined distance. After the separation, while the upper mold 2 continues to ascend, the molds 1 and 2 are completely opened in the order that the machining module 4 is separated from the lower mold 1.

[0029] When the molds 1 and 2 are completely opened, all the complex structures such as the punch that were conventionally arranged on the take-out path are arranged on the machining module 4 and lifted by the upper mold 2. Therefore, only the workpiece placed on the die 3 remains on the lower mold 1, and the workpiece is very easy to take out.

[0030] Further, in order to prevent the punch 12 of the punch portion 5 disposed in the processing module 4 and transferred by the cam drive 6 from detaching from the processing position due to the surface inclination and shape of the object to be processed, it is preferably configured to further include a punch guide 7 that is adhered to the surface of the object to be processed and guides the outer peripheral surface of the punch 12 while surrounding the outer peripheral surface of the punch 12 during the hole processing.

[0031] At this time, the punch portion 5 may be composed of a plurality of parts, radially arranged around the object to be processed in the processing module 4, the punch guide 7 is in the form of a ring surrounding the object to be processed, and guide holes 8 may be formed in the direction of each punch portion 5.

[0032] In this way, the configuration of the punch portion 5 including the punch 12 for hole processing and the configuration such as the punch guide 7 for preventing the punch 12 from being deformed are all integrally arranged on the processing module 4. Therefore, the object to be processed placed on the die 3 of the lower mold 1 is very easy to take out when taken out after processing because there are no elements that cause collisions or obstruct the flow line, and the working space can be utilized more efficiently.

[0033] Also, as shown in FIG. 4 or FIG. 5, the die 3 may be configured to include a die body 21 formed in accordance with the shape of the inner peripheral surface of the object to be processed, and a die guide 22 for supporting the edge of the hole processing region in such a form that the punch 12 of the punch portion 5 is inserted at a predetermined depth.

[0034] The die guide 22 is configured to be easily replaceable from the die body 21 when wear and corrosion occur due to repeated hole processing, and the precision of the hole processing can be kept constant.

[0035] Also, the punch portion 5 is composed of a cam slide 11 installed slidably transferable toward the object to be processed in the processing module 4, and a punch 12 protruding and fixed to the front surface of the cam slide 11.

[0036] Further, the punch portion 5 is disposed at the upper front portion of the cam slide 11 and includes a return portion 13 for returning the transferred cam slide 11.

[0037] At this time, the return portion 13 is preferably configured of an elastic body or a cylinder and is elastically supported by the punch guide 7 or the processing module 4 so as to push and return the cam slide 11 when the cam drive 6 disengages upward while the upper die 2 rises after the hole processing is completed.

[0038] Further, the punch portion 5 may further include a fixed bar 15 disposed on the back side of the cam slide 11 and a fixed plate 14 covering the cam slide 11, and may be configured to enhance the convenience of maintenance.

[0039] Furthermore, as shown in FIGS. 6 to 9, after removing the fixed plate 14 disposed below the processing module 4 and separating the fixed bar 15 inserted into the processing module 4, the punch 12 and the cam slide 11 can be very easily removed from the guide hole 8 of the punch guide 7 without damaging the punch 12.

[0040] As described above, the present invention has been described mainly with reference to the preferred embodiments with reference to the accompanying drawings. However, it is obvious to those skilled in the art that numerous various obvious modifications can be made without departing from the scope of the present invention from such a description. Therefore, the scope of the present invention should be interpreted by the claims described to include such numerous examples of modifications.

Description of Reference Numerals

[0041] 1 Lower die 2 Upper die 3 Die 4 Processing module 5 Punch portion 6 Cam drive 7 Punch guide 8 Guide hole 11 Cam Slide 12 Punch 13 Return Part 14 Fixed Plate 15 Fixed Bar 21 Die Body 22 Die Guide 100 Object to be Processed

Claims

1. A die is disposed in the lower mold and on which a workpiece is placed; a processing module disposed under the upper mold and spaced apart from or in close contact with the upper mold by opening and closing the mold; a punch unit disposed in the processing module for punching a hole in a processing object; a cam drive formed protruding from a lower portion of the upper die for transferring the punch portion.

2. The punch unit includes: A cam slide is installed in the processing module so as to be slidably moved toward the processing object; 2. The horizontal hole machining die structure according to claim 1, further comprising: a punch protruding and fixed to a front surface of the cam slide.

3. The punch unit includes:

3. The horizontal hole machining die structure according to claim 2, further comprising a return portion disposed on an upper portion of the front surface of the cam slide for returning the cam slide that has been transported.

4. The die includes: A die body formed to match the shape of the inner peripheral surface of the object to be processed; 2. The horizontal hole machining die structure according to claim 1, further comprising: a die guide for supporting an edge of a hole machining area in a form in which the punch of the punch unit is inserted to a predetermined depth.

5. 2. The horizontal hole processing die structure according to claim 1, further comprising a punch guide, the punch guide being disposed in the processing module, in contact with the surface of the workpiece to prevent the punch of the punch unit, which is moved by the cam drive, from leaving the processing position due to the surface inclination and shape of the workpiece, and having a guide hole formed therein for guiding the punch in a state surrounding the outer peripheral surface of the punch while the punch processes the hole.

6. The punch units are arranged radially around the workpiece in the processing module, 6. The horizontal hole machining die structure according to claim 5, wherein the punch guide has guide holes formed in a ring shape surrounding the workpiece in the direction of each punch portion.

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