Punching device

Abstract

The present invention discloses a punching device, including a first lower pressing beam and a plurality of C-shaped molds, wherein the C-shaped mold includes a C-shaped body and an upper mold core and a lower mold core for cooperating with punching, wherein the upper mold core and the lower mold core are both arranged on the C-shaped body, wherein the lower end of the upper mold core slides through the C-shaped body, wherein the upper end of the upper mold core is provided with a first elastic member, wherein one end of the first elastic member is used to abut against the C-shaped body, and the other end of the first elastic member is used to abut against the upper mold core, wherein the first lower pressing beam is used to press down the upper mold core, and the first lower pressing beam is not connected to the upper mold core. The punching device above-mentioned enables the upper mold core and the lower mold core to be aligned through the C-shaped body, so that the upper mold core and the lower mold core are accurately aligned during repeated punching, and the punching effect is relatively stable, wherein the first lower pressing beam is not connected to the upper mold core, and no lateral force component is generated during punching, so there is no need to consider the coincidence of the pressure center of the lower pressing beam with the pressure center of the C-shaped mold during punching, and multiple holes and a variety of different hole types can be punched out in one action, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of punching equipment, in particular to a punching device. Background Art

[0002] In engineering manufacturing, various processing is required for parts, among which punching of parts is more common. A press can be used to drive the punching die to punch the parts.

[0003] In order to ensure that the punching die can perform repeated punching work normally and balanced on the press, the pressing center of the press needs to coincide with the pressure center of the punching die when punching. Therefore, when performing the punching operation, the slide on the press needs to lock the upper die and the lower die. When the punching die is adjusted, the position of the press and the coordination between the press and the punching die need to be adjusted accordingly, which can easily cause errors and lead to unstable punching effects. At the same time, the traditional punching machine can only punch one hole per action, and the workpiece needs to be repositioned when punching the second hole. Especially when different hole types need to be punched on the same workpiece, the die needs to be replaced, which makes continuous production impossible and has low production efficiency. Summary of the invention

[0004] Based on this, the present invention aims to overcome the defects of the prior art and provide a punching device with a relatively stable punching effect and high production efficiency.

[0005] The technical solution is as follows:

[0006] A punching device includes a first lower pressure beam and multiple C-shaped molds, wherein the C-shaped mold includes a C-shaped body and an upper mold core and a lower mold core for cooperating with punching, wherein the upper mold core and the lower mold core are both arranged on the C-shaped body, and the lower end of the upper mold core slides through the C-shaped body, and the upper end of the upper mold core is outer-coated with a first elastic member, one end of the first elastic member is used to abut against the C-shaped body, and the other end of the first elastic member is used to abut against the upper mold core, and the first lower pressure beam is used to press down the upper mold core, and the first lower pressure beam is not connected to the upper mold core.

[0007] In the above-mentioned punching device, the upper mold core slides through the C-shaped body, and the C-shaped body can guide the sliding of the upper mold core. The two ends of the first elastic member are respectively abutted on the upper mold core and the C-shaped body. The upper mold core and the lower mold core are aligned through the C-shaped body, so that the upper mold core and the lower mold core are accurately aligned during repeated punching, and the punching effect is relatively stable. At the same time, the first lower pressure beam is not connected to the upper mold core. The impact force of the first lower pressure beam only produces a vertical downward force on multiple C-shaped molds, and no lateral force component is generated. Therefore, there is no need to consider the overlap of the pressure center of the lower pressure beam with the pressure center of the C-shaped mold when punching. Multiple holes and a variety of different hole types can be punched out in one action, with high production efficiency. At the same time, the consistency requirements between multiple molds are low, and the mold manufacturing cost is low.

[0008] Furthermore, the upper mold core includes a floating guide sleeve and a punch needle, the punch needle passes through the floating guide sleeve, a limiting step is provided on the outer surface of the floating guide sleeve, the floating guide sleeve is slidably passed through the C-shaped body, the first elastic member is sleeved outside the floating guide sleeve, one end of the first elastic member is used to abut against the C-shaped body, and the other end of the first elastic member is used to abut against the limiting step.

[0009] Furthermore, the upper mold core also includes a limit member and a second elastic member, the punch needle passes through the limit member, the second elastic member and the floating guide sleeve in sequence, the punch needle is connected to the limit member, the limit member is arranged at one end of the punch needle away from the lower mold core, and the elastic coefficient of the second elastic member is greater than the elastic coefficient of the first elastic member.

[0010] Furthermore, the upper mold core also includes an assembly rod, the limiting member is provided with a mounting hole matching the punch needle, the limiting member is also provided with a through hole matching the assembly rod, the through hole is connected to the mounting hole, the center line of the through hole is set at an angle to the center line of the mounting hole, the punch needle is provided with an assembly hole matching the assembly rod, and the assembly rod passes through the through hole and the assembly hole in sequence.

[0011] Furthermore, the first elastic member is rubber, and the second elastic member is a spring.

[0012] Furthermore, the end surface of the punching needle is arranged flush with the end surface of the floating guide sleeve.

[0013] Furthermore, the C-shaped body also includes an upper mold base, a connecting column and a lower mold base connected in sequence, the upper mold base is arranged opposite to the lower mold base, the upper mold core slides through the upper mold base, the lower mold base is installed on the lower mold base, and the C-shaped body is an integrated structure.

[0014] Furthermore, the lower mold core is provided with a blanking hole matching the upper mold core, the lower mold base is provided with a leakage space connected with the blanking hole, a leakage inclined block is provided in the leakage space, the outlet of the leakage space is provided on the side of the lower mold base away from the connecting column, and the leakage inclined block is arranged toward the outlet of the leakage space.

[0015] Furthermore, the punching device further comprises a second pressing beam, which is used to press down the C-shaped body, and the second pressing beam is not connected to the C-shaped body.

[0016] Furthermore, the punching device also includes a positioning block, a first adjusting member and a second adjusting member, one end of the first adjusting member slides through the positioning block and is connected to the second downward pressure beam, the other end of the first adjusting member is covered with a third elastic member, the two ends of the third elastic member are respectively used to support the positioning block and the first adjusting member, the positioning block is provided with a threaded hole that threadably cooperates with the second adjusting member, and the second adjusting member and the second downward pressure beam are arranged opposite to each other.

[0017] Furthermore, a buffer pad is provided on a side of the C-shaped body close to the second pressing down beam, and the second pressing down beam presses down the C-shaped body through the buffer pad.

[0018] Furthermore, the punching device further comprises a slide rail, and the C-shaped body is slidably matched with the slide rail.

[0019] Furthermore, the C-shaped body is provided with a slide groove matching the slide rail, and the cross-sectional area of ​​the slide groove gradually increases in the direction away from the lower mold core; or the cross-sectional area of ​​the slide groove is equal in the direction away from the upper mold core.

[0020] Furthermore, the punching device also includes at least two presses, which are arranged at intervals along the length direction of the first pressing beam, and the push rods of the presses are arranged in parallel and at intervals, and the push rods of the presses are connected to the first pressing beam, and the push rods of the presses are used to press down the first pressing beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a punching device according to an embodiment of the present invention;

[0022] Figure 2 A back view of the punching device according to an embodiment of the present invention;

[0023] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 4 A partial cross-sectional view of a C-shaped mold according to an embodiment of the present invention;

[0025] Figure 5 for Figure 2 A partial enlarged view of point B in the middle;

[0026] Figure 6 for Figure 2 A partial enlarged view of point C in the middle.

[0027] Description of reference numerals:

[0028] 100, first lower pressure beam, 200, C-type mold, 210, C-type body, 211, upper mold base, 212, connecting column, 213, lower mold base, 213a, leakage space, 213b, leakage inclined block, 214, buffer pad, 215, slide groove, 220, upper mold core, 221, floating guide sleeve, 221a, first sleeve, 221b, second sleeve, 222, punch needle, 223, limiter, 224, second elastic member, 23 0. Lower mold core, 231. Blanking hole, 240. First elastic member, 300. Second lower pressure beam, 410. Positioning block, 420. First adjusting member, 430. Second adjusting member, 440. Third elastic member, 450. Auxiliary block, 460. Third adjusting member, 470. Fourth adjusting member, 500. Slide rail, 600. Press, 700. Base, 710. Blocking member, 800. Cantilever, 900. Support frame, 10. Processing part. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0033] like Figures 1 to 3As shown, the punching device includes a first lower pressure beam 100 and a plurality of C-type molds 200. The C-type mold 200 includes a C-type body 210 and an upper mold core 220 and a lower mold core 230 for cooperating with punching. The upper mold core 220 and the lower mold core 230 are both arranged on the C-type body 210. The lower end of the upper mold core 220 slides through the C-type body 210. The upper end of the upper mold core 220 is outer sleeved with a first elastic member 240. One end of the first elastic member 240 is used to abut against the C-type body 210, and the other end of the first elastic member 240 is used to abut against the upper mold core 220. The first lower pressure beam 100 is used to press down the upper mold core 220, and the first lower pressure beam 100 is not connected to the upper mold core 220.

[0034] In the above-mentioned punching device, the upper mold core 220 slides through the C-shaped body 210, and the C-shaped body 210 can guide the sliding of the upper mold core 220. The two ends of the first elastic member 240 are respectively abutted on the upper mold core 220 and the C-shaped body 210. The upper mold core 220 and the lower mold core 230 are aligned through the C-shaped body 210, so that the upper mold core 220 and the lower mold core 230 are accurately aligned during repeated punching, and the punching effect is relatively stable. At the same time, the first lower pressure beam 100 is not connected to the upper mold core 220. The impact force of the first lower pressure beam 100 only generates a vertical downward force on multiple C-shaped molds 200, and no lateral force component is generated. Therefore, there is no need to consider the overlap of the pressure center of the lower pressure beam and the pressure center of the C-shaped mold 200 when punching. Multiple holes and multiple different hole types can be punched out in one action, with high production efficiency. At the same time, the consistency requirements between multiple molds are low, and the mold manufacturing cost is low.

[0035] Optionally, the first pressing beam 100 is a plate. At this time, no matter what setting the slide rail 500 is, since the first pressing beam 100 is a plate, the first pressing beam 100 can cover each C-shaped mold 200 to complete the multi-hole punching operation.

[0036] like Figure 3 and Figure 4 As shown, further, the upper mold core 220 includes a floating guide sleeve 221 and a punching needle 222, the punching needle 222 is inserted through the floating guide sleeve 221, and a limiting step is provided on the outer surface of the floating guide sleeve 221. The floating guide sleeve 221 is slidably inserted through the C-shaped body 210, and the first elastic member 240 is sleeved outside the floating guide sleeve 221. One end of the first elastic member 240 is used to abut against the C-shaped body 210, and the other end of the first elastic member 240 is used to abut against the limiting step. At this time, the limiting step on the floating guide sleeve 221 can limit the upper mold core 220, and the floating guide sleeve 221 can protect the punching needle 222.

[0037] Optionally, the cross section of the punching needle 222 is a rounded rectangle, that is, both sides of the rectangular surface are provided with arc surfaces. In addition, the shape of the punching needle 222 can also be set according to the requirements of punching.

[0038] like Figure 4 As shown, optionally, the floating guide sleeve 221 includes a first sleeve 221a and a second sleeve 221b connected, the outer diameter of the first sleeve 221a is larger than the outer diameter of the second sleeve 221b, the second sleeve 221b is arranged on the side of the first sleeve 221a away from the first elastic member 240, the second sleeve 221b is used to slide through the upper die seat 211, and the third elastic member 440 is arranged against the connection between the first sleeve 221a and the second sleeve 221b. At this time, the third elastic member 440 can be put on the first sleeve 221a, and the first sleeve 221a can be slid through the upper die seat 211, and the upper die core 220 can be used for punching operation, which is simple to install and can improve processing efficiency.

[0039] Optionally, the cross section of the second sleeve 221b is a rounded rectangle. The rounded rectangle is a rectangular surface with arc surfaces on both sides. At this time, the cooperation between the second sleeve 221b and the upper die seat 211 can ensure the circumferential fixation of the second sleeve 221b and ensure the accuracy of punching.

[0040] like Figure 4 As shown, further, the upper mold core 220 also includes a limit piece 223 and a second elastic piece 224, the punch needle 222 passes through the limit piece 223, the second elastic piece 224 and the floating guide sleeve 221 in sequence, the punch needle 222 is connected to the limit piece 223, the limit piece 223 is arranged at one end of the punch needle 222 away from the lower mold core 230, and the elastic coefficient of the second elastic piece 224 is greater than the elastic coefficient of the first elastic piece 240. At this time, since the elastic coefficient of the third elastic member 440 is greater than the elastic coefficient of the first elastic member 240, when the first pressing beam 100 presses down the lower mold core 230, the first elastic member 240 can be deformed before the third elastic member 440. At this time, the floating guide sleeve 221 can be pressed on the workpiece 10 first, and then the third elastic member 440 is deformed, and the punch needle 222 extends from the floating guide sleeve 221 and punches the workpiece 10. At this time, the punching of the workpiece 10 is more accurate; when the punching is completed, due to the rebound of the third elastic member 440, the punch needle 222 will return to its position relative to the floating guide sleeve 221. At this time, the punch needle 222 can withdraw from the workpiece 10 to prevent the workpiece 10 from moving with the punch needle 222, thereby facilitating processing.

[0041] like Figure 4As shown, further, the upper mold core 220 also includes an assembly rod, a mounting hole matching the punch pin 222 is provided on the stopper 223, a through hole matching the assembly rod is also provided on the stopper 223, the through hole is connected to the mounting hole, the center line of the through hole is set at an angle with the center line of the mounting hole, the punch pin 222 is provided with an assembly hole matching the assembly rod, and the assembly rod passes through the through hole and the assembly hole in sequence. When assembling the stopper 223 and the punch pin 222, the punch pin 222 is first inserted into the mounting hole, and then the assembly rod is passed through the through hole and the assembly hole in sequence to complete the fixing of the stopper 223 and the punch pin 222. At the same time, the above structure can facilitate the replacement of the punch pin 222.

[0042] Furthermore, the first elastic member 240 is rubber and the second elastic member 224 is a spring. Since the elastic coefficient of the spring is relatively small, the elastic deformation of the third elastic member 440 is greater, ensuring that the floating guide sleeve 221 is better pressed on the workpiece 10, completing the positioning of the workpiece 10, and achieving a better processing effect.

[0043] Specifically, the outer diameter of the third elastic member 440 is smaller than or equal to the outer diameter of the first sleeve 221 a , which can ensure that one end of the third elastic member 440 abuts against the connection between the first sleeve 221 a and the second sleeve 221 b .

[0044] Furthermore, the end face of the punching needle 222 is flush with the end face of the floating guide sleeve 221. After the punching is completed, the rebound of the first elastic member 240 causes the punching needle 222 to move relative to the floating guide sleeve 221. Since the end face of the punching needle 222 is flush with the end face of the floating guide sleeve 221, the punching needle 222 is withdrawn from the workpiece 10, which is convenient for the next punching operation and has a good processing effect. In addition, in the vertical direction, the end face of the punching needle 222 can also be higher than the end face of the floating guide sleeve 221. At this time, it can be ensured that the floating guide sleeve 221 presses the workpiece 10 first.

[0045] Optionally, when the upper mold core 220 is not subjected to force, the end surface of the floating guide sleeve 221 away from the stopper 223 is flush with the bottom surface of the upper mold base 211. At this time, the floating guide sleeve 221 will not hinder the workpiece 10 from being placed between the upper mold base 211 and the lower mold base 213.

[0046] Optionally, the limiting member 223 is a plate member, and the punching needle 222 passes through the limiting member 223 and is fixedly connected to the limiting member 223 .

[0047] like Figure 3As shown, the C-shaped body 210 further includes an upper die seat 211, a connecting column 212 and a lower die seat 213 connected in sequence, the upper die seat 211 and the lower die seat 213 are arranged opposite to each other, the upper die core 220 slides through the upper die seat 211, and the lower die seat 213 is installed on the lower die seat 213, and the C-shaped body 210 is an integrated structure. At this time, the C-shaped body 210 can be replaced according to the structure of the workpiece 10, further improving the application range of the above-mentioned punching device.

[0048] like Figure 4 As shown, further, the lower die core 230 is provided with a blanking hole 231 matching the upper die core 220, the lower die base 213 is provided with a leakage space 213a connected with the blanking hole 231, a leakage inclined block 213b is provided in the leakage space 213a, the outlet of the leakage space 213a is provided on the side of the lower die base 213 away from the connecting column 212, and the leakage inclined block 213b is arranged toward the outlet of the leakage space 213a. At this time, the blanking waste punched out of the workpiece 10 can pass through the blanking hole 231 and be discharged from the outlet of the leakage space 213a through the leakage inclined block 213b, and the effect of discharging the blanking waste is better.

[0049] Optionally, the lower mold core 230 is a square column. In this embodiment, the two sides of the workpiece 10 are bent in the same direction. At this time, the lower mold core 230 can match the workpiece 10, making the positioning of the workpiece 10 more convenient and achieving a better positioning effect. In addition, the lower mold core 230 can also be set accordingly according to the structure of the workpiece 10.

[0050] Optionally, the size of the blanking hole 231 is larger than the size of the punching needle 222 , so that the blanking waste can be discharged from the blanking hole 231 .

[0051] like Figure 1 As shown, further, the punching device further includes a second pressing beam 300, which is used to press down the C-shaped body 210, and the second pressing beam 300 is not connected to the C-shaped body 210. The second pressing beam 300 can press the C-shaped body 210 to prevent the C-shaped mold 200 from shifting during punching, thereby improving the stability of the multi-hole punching operation.

[0052] Optionally, the second pressing beam 300 is a plate, and in this case, the second pressing beam 300 has a better pressing effect on the C-shaped body 210 .

[0053] like Figure 5As shown, further, the punching device also includes a positioning block 410, a first adjusting member 420 and a second adjusting member 430. One end of the first adjusting member 420 slides through the positioning block 410 and is connected to the second downward pressure beam 300. The other end of the first adjusting member 420 is covered with a third elastic member 440. The two ends of the third elastic member 440 are respectively used to resist the positioning block 410 and the first adjusting member 420. The positioning block 410 is provided with a threaded hole that threadably cooperates with the second adjusting member 430. The second adjusting member 430 is arranged relative to the second downward pressure beam 300. At this time, the second adjusting member 430 can be matched with the thread of the threaded hole, so that the second adjusting member 430 can be placed on the second pressing beam 300, and the second pressing beam 300 can press down the C-shaped body 210 to ensure the positioning of the C-shaped mold 200. At the same time, when the second adjusting member 430 is loosened, the second elastic member 224 can drive the first adjusting member 420 to rise, so that the second pressing beam 300 returns to its original position, and the position of the C-shaped mold 200 can be adjusted at this time.

[0054] like Figure 6 As shown, optionally, the punching device is further provided with an auxiliary block 450, a third adjusting member 460 and a fourth adjusting member 470. The auxiliary block 450 and the positioning block 410 are arranged at intervals along the length direction of the second pressing beam 300. The third adjusting member 460 passes through the auxiliary block 450 and is connected to the second pressing beam 300. The auxiliary block 450 is provided with a threaded hole that is threadedly matched with the fourth adjusting member 470. The fourth adjusting member 470 is arranged opposite to the second pressing beam 300. In the above structure, two groups of adjusting members are used to adjust the position of the second pressing beam 300, which has a better pressing effect on each C-shaped mold 200. At the same time, the third adjusting member 460 is used to assist in guiding the return of the second pressing beam 300, and no elastic member is used, so the structure is simpler.

[0055] like Figure 1 As shown, further, a buffer pad 214 is provided on the side of the C-shaped body 210 close to the second pressing beam 300, and the second pressing beam 300 presses down the C-shaped body through the buffer pad 214. The buffer pad 214 can eliminate the matching gap between each C-shaped mold 200 and the second pressing beam 300, ensure that the second pressing beam 300 presses each C-shaped mold 200, and improve the stability of the multi-hole punching operation.

[0056] Optionally, the buffer pad 214 is a rubber pad.

[0057] like Figure 3 As shown, the punching device further includes a slide rail 500, and the C-shaped body 210 is slidably matched with the slide rail 500. At this time, the C-shaped body 210 can slide along the slide rail 500, and the displacement is more accurate when adjusting the C-shaped body 210.

[0058] Optionally, the slide rail 500 can be arranged along a straight line or a curve, so that the punching device is suitable for punching workpieces 10 of different shapes.

[0059] Optionally, the slide rail 500 may be provided continuously or discontinuously.

[0060] like Figure 4 As shown, further, a slide groove 215 matching the slide rail 500 is provided on the C-shaped body 210, and the cross-sectional area of ​​the slide groove 215 gradually increases in the direction away from the upper mold core 220; or the cross-sectional area of ​​the slide groove 215 is equal in the direction away from the upper mold core 220. At this time, the C-shaped body 210 can be slid and adjusted along the slide rail 500, and when the C-shaped mold 200 is replaced according to processing needs, it can be directly picked up without sliding to the end of the slide rail 500.

[0061] like Figure 1 and Figure 2 As shown, further, the punching device further includes at least two presses 600, the presses 600 are arranged at intervals along the length direction of the first lower pressing beam 100, and the push rods of the presses 600 are arranged in parallel and at intervals, and the push rods of the presses 600 are connected to the first lower pressing beam 100, and the push rods of the presses 600 are used to press down the first lower pressing beam 100. By arranging at least two push rods at intervals, the thrust force received by the lower pressing beam at various locations along the length direction is evenly distributed, ensuring that the downward pressure on each C-shaped mold 200 is the same, and improving the processing effect of multi-hole punching.

[0062] In this embodiment, the press machine 600 is a hydraulic cylinder. In addition, the press machine 600 can also be a punch press or the like.

[0063] like Figure 1 and Figure 2 As shown, the punching device further includes a base 700, the slide rail 500 is disposed on the base 700, the first pressing beam 100 and the second pressing beam 300 are both disposed opposite to the base 700, a blocking member 710 is disposed on one side of the base 700, and the end surface of the slide rail 500 is disposed opposite to the blocking member 710. At this time, the blocking member 710 can limit the workpiece 10, so that the workpiece 10 is conveniently placed in the C-shaped mold 200 for punching operation.

[0064] like Figure 1 As shown, the punching device also includes a cantilever 800 and a support frame 900. The two ends of the support frame 900 are respectively connected to the cantilever 800 and the base 700. The cantilever 800 and the base 700 are arranged opposite to each other. The press 600 is arranged on the side of the cantilever 800 away from the base 700. The push rod of the press 600 passes through the cantilever 800 and is connected to the first downward pressing beam 100. The positioning block 410 and the auxiliary block 450 are respectively arranged on different support frames 900.

[0065] In this embodiment, the workpiece 10 is an iron packaging box profile, but the punching device can also be used for punching other parts. Specifically, the slide rail 500 is arranged along a straight line, the length of the first press beam 100 and the second press beam 300 matches the length of the slide rail 500, and the first press beam 100 and the second press beam 300 are arranged parallel to the slide rail 500.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A punching device, characterized in that: It includes a first lower pressure beam, a second lower pressure beam, a positioning block, a first adjusting member, a second adjusting member, a plurality of C-shaped molds and at least two presses, the C-shaped mold includes a C-shaped body and an upper mold core and a lower mold core for cooperating with punching, the upper mold core and the lower mold core are both arranged on the C-shaped body, the upper mold core includes a floating guide sleeve, a punch needle, a limit member and a second elastic member, a limit step is provided on the outer surface of the floating guide sleeve, the floating guide sleeve is slidably penetrated on the C-shaped body, the outer sleeve of the floating guide sleeve is provided with a first elastic member, one end of the first elastic member is used to abut against the C-shaped body, and the other end of the first elastic member is used to abut against the limit step, the punch needle sequentially penetrates the limit member, the second elastic member and the floating guide sleeve, the punch needle is connected to the limit member, the limit member is arranged at the end of the punch needle away from the lower mold core, the second elastic member The elastic coefficient is greater than the elastic coefficient of the first elastic member, the press is arranged at intervals along the length direction of the first lower pressure beam, the push rod of the press is arranged in parallel and at intervals, the push rod of the press is connected to the first lower pressure beam, the push rod of the press is used to press down the first lower pressure beam, the first lower pressure beam is used to press down the upper mold core, the first lower pressure beam is not connected to the upper mold core; the second lower pressure beam is used to press down the C-shaped body, the second lower pressure beam is not connected to the C-shaped body, one end of the first adjusting member slides through the positioning block and is connected to the second lower pressure beam, the other end of the first adjusting member is outer-coated with a third elastic member, the two ends of the third elastic member are respectively used to resist the positioning block and the first adjusting member, the positioning block is provided with a threaded hole that threadably cooperates with the second adjusting member, the second adjusting member and the second lower pressure beam are arranged opposite to each other.

2. The punching device according to claim 1, characterized in that: The upper mold core also includes an assembly rod, the limiting member is provided with an installation hole matching the punch needle, the limiting member is also provided with a through hole matching the assembly rod, the through hole is connected to the installation hole, the center line of the through hole is set at an angle to the center line of the installation hole, the punch needle is provided with an assembly hole matching the assembly rod, and the assembly rod passes through the through hole and the assembly hole in sequence.

3. The punching device according to claim 1, characterized in that: The first elastic member is rubber, and the second elastic member is a spring.

4. The punching device according to claim 1, characterized in that: The end surface of the punching needle is arranged flush with the end surface of the floating guide sleeve.

5. The punching device according to claim 1, characterized in that: The C-shaped body also includes an upper die seat, a connecting column and a lower die seat connected in sequence. The upper die seat is arranged opposite to the lower die seat. The upper die core slides through the upper die seat. The lower die core is installed on the lower die seat. The C-shaped body is an integrated structure.

6. The punching device according to claim 5, characterized in that: The lower mold core is provided with a blanking hole matching the upper mold core, the lower mold base is provided with a leakage space connected with the blanking hole, a leakage inclined block is provided in the leakage space, the outlet of the leakage space is arranged on the side of the lower mold base away from the connecting column, and the leakage inclined block is arranged toward the outlet of the leakage space.

7. The punching device according to claim 1, characterized in that: A buffer pad is provided on the side of the C-shaped body close to the second pressing down beam, and the second pressing down beam presses down the C-shaped body through the buffer pad.

8. The punching device according to claim 1, characterized in that: The buffer pad is a rubber pad.

9. The punching device according to any one of claims 1 to 8, characterized in that: It also includes a slide rail, and the C-shaped body is slidably matched with the slide rail.

10. The punching device according to claim 9, characterized in that: The C-shaped body is provided with a slide groove matching the slide rail, and the cross-sectional area of ​​the slide groove gradually increases in the direction away from the upper mold core; or the cross-sectional area of ​​the slide groove is equal in the direction away from the upper mold core.

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