Dense hole stamping device

Abstract

The utility model discloses a dense hole punching device which comprises an upper die, a punch mechanism, a lower die and a switching mechanism, the punch mechanism comprises a moving assembly and N punching needles, the moving assembly is provided with 1 / 2N containing holes, elastic pieces are arranged in all the containing holes, N is an integer larger than zero, all the punching needles are arranged in through holes of a stripper plate in a penetrating mode, and the switching mechanism is arranged on the lower die. The upper end of the punching needle can abut against the lower surface of the moving assembly or the lower end of the elastic piece. The output end of a linear driving mechanism of the switching mechanism is connected with a moving assembly, and the linear driving mechanism can drive the moving assembly to move in the cavity in the left-right direction. And the 1 / 2N punching needles and the other 1 / 2N punching needles alternately abut against the lower end of the elastic piece, push the through hole and abut against the lower surface of the moving assembly so as to extend to the position below the stripper plate and punch the plate. The N holes of the product are punched twice through the punching device, deformation of the plate and the final product is reduced, the risk of deformation and fracture of the lower die plate is reduced, and large punching equipment does not need to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of punching, in particular to a dense hole punching device. Background Art

[0002] Stamping is a production technology that uses the power of conventional or special stamping equipment to directly subject the sheet metal to deformation force in the mold and deform it, thereby obtaining a product of a certain shape, size and performance.

[0003] When punching holes, the traditional dense hole punching device has a small structural strength of the plate, a small diameter and strength of the punch needle, and a large punching force. This can easily cause bending and deformation of the plate punching area, bending and breaking of the punch needle, and rupture of the lower template, which in turn results in poor product quality and frequent mold maintenance, which is time-consuming, labor-intensive, costly, and reduces production efficiency. In addition, larger stamping equipment is required to complete the punching process, resulting in a waste of production resources. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a dense hole punching device, which can complete the punching with a smaller punching device, reduce the risk of the lower template breaking and reduce the waste of production resources.

[0005] According to an embodiment of the utility model, a dense hole punching device includes an upper die, a punch mechanism, a lower die and a switching mechanism, the upper die includes an upper die base, an upper backing plate, an upper pad, an upper clamping plate and a stripping plate connected in sequence from top to bottom, the stripping plate can be raised and lowered to be connected to the upper clamping plate, the upper backing plate, the upper pad, the upper clamping plate and the stripping plate form a cavity; the punch mechanism includes a moving component and N punching needles, the moving component is provided with 1 / 2N receiving holes, all the receiving holes are provided with elastic parts, N is an integer greater than zero, all the punching needles are penetrated through the through holes of the stripping plate, and the upper ends of the punching needles can be abutted against The lower surface of the movable component or the lower end of the elastic member; the lower die is arranged below the stripping plate, and the lower die is provided with die holes in the area corresponding to the through hole, and the die holes are used for the insertion of the punch needle; the switching mechanism includes a linear drive mechanism, and the output end of the linear drive mechanism is connected to the movable component, and the linear drive mechanism can drive the movable component to move in the left and right directions in the cavity, so that 1 / 2N of the punch needles and another 1 / 2N of the punch needles are alternately abutted against the lower end of the elastic member and pushed into the through hole and abutted against the lower surface of the movable component to extend to the bottom of the stripping plate and punch out the sheet material.

[0006] The invention has at least the following beneficial effects: N holes of the product are punched out in two times by the punching device. Compared with the existing punching device which punches out N holes in one time, the number of punching needles for punching the sheet metal is reduced in one punching, thereby reducing the deformation of the sheet metal and the final product, improving the processing quality of the product, and increasing the service life of the punching needles; the pressure on the lower template is halved, thereby reducing the risk of deformation and rupture of the lower template, and while increasing the service life of the lower template, the maintenance frequency of the punching device can be reduced, thereby avoiding a decrease in production efficiency and reducing production costs; the punching force is halved, and there is no need to use larger punching equipment. Smaller punching equipment can be used to drive the punching device to complete the punching process, thereby reducing the waste of production resources.

[0007] According to some embodiments of the utility model, a limiting groove is provided on the upper surface of the stripping plate, an insert is provided in the limiting groove, the insert and the stripping plate are respectively provided with a first through hole and a second through hole, the first through hole and the second through hole are interconnected, and the punching needle can be penetrated through the first through hole and the second through hole to extend to the bottom of the stripping plate and punch the plate.

[0008] According to some embodiments of the utility model, a limit rod is further included, the movable component is provided with an oblong hole, the length direction of the oblong hole is the left-right direction, the limit rod is passed through the oblong hole, the two ends of the limit rod are respectively connected to the upper back plate and the insert, and the limit rod limits the travel of the movable component in the cavity along the left-right direction.

[0009] According to some embodiments of the utility model, the upper pad and the upper clamp are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole are coaxially arranged, and the third through hole is larger than the cross-section of the fourth through hole, the moving component includes a cushion block and a moving block connected up and down, the cushion block and the moving block are respectively arranged in the third through hole and the fourth through hole, the cushion block is against the upper surface of the upper clamp and can slide on the upper clamp, the cushion block and the moving block are respectively provided with a fifth through hole and a sixth through hole, and the elastic member is passed through the fifth through hole and the sixth through hole.

[0010] According to some embodiments of the utility model, the linear drive mechanism is connected to the upper back plate, the upper clamping plate is provided with a first avoidance hole connected to the cavity, and the output end of the linear drive mechanism is passed through the first avoidance hole and connected to the moving component.

[0011] According to some embodiments of the utility model, the lower mold includes a lower mold plate, a lower pad and a base connected in sequence from top to bottom, the mold hole is arranged on the lower mold plate, a second avoidance hole is arranged on the lower pad, and the mold hole is connected to the second avoidance hole.

[0012] According to some embodiments of the utility model, the base includes a pedestal, a lower foot assembly, a support column and a lower support plate, the lower foot assembly and the support column are arranged between the pedestal and the lower support plate, and the base is connected to the lower support plate and is located below the lower support plate.

[0013] According to some embodiments of the utility model, the base is provided with a waste discharge channel, the waste discharge channel is communicated with the second avoidance hole, and a waste collection bucket is provided below the waste discharge channel.

[0014] According to some embodiments of the utility model, a product bracket is further included, which includes a first support rod and a second support rod, one end of the first support rod is connected to the base, and the other end of the first support rod is connected to the second support rod, and the second support rod can support the plate.

[0015] According to some embodiments of the present invention, the elastic member is a spring pin.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a cross-sectional schematic diagram of a dense hole punching device according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 The middle circle shows the enlarged structural schematic diagram of A;

[0020] Figure 3 This is a schematic structural diagram of a dense hole punching device according to an embodiment of the utility model after the upper die base and the upper back plate are hidden;

[0021] Figure 4 It is a top view of a dense hole punching device according to an embodiment of the utility model.

[0022] Figure Number:

[0023] Upper die 100; upper die base 110; upper backing plate 120; upper pad 130; upper clamping plate 140;

[0024] Stripper plate 150; insert 151;

[0025] Elastic member 200;

[0026] Punch mechanism 300; moving assembly 310; oblong hole 311; pad 312; moving block 313; receiving hole 314; punch needle 320;

[0027] Switching mechanism 400; Linear drive mechanism 410;

[0028] Lower mold 500; mold hole 510; lower mold plate 520; lower pad 530; second avoidance hole 531; base 540; base 541; lower pad assembly 542; support column 543; lower support plate 544; waste discharge channel 545; waste collection bucket 546;

[0029] Limit rod 600;

[0030] Product bracket 700 ; first support rod 710 ; second support rod 720 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 4The utility model discloses a dense hole punching device, including an upper die 100, a punch mechanism 300, a switching mechanism 400, a lower die 500, a limit rod 600 and a product bracket 700, wherein: the product bracket 700 plays a role in supporting the plate, so that the plate is between the upper die 100 and the lower die 500 and rests on the lower die 500, the upper die 100 is connected to the punching mechanism of the punching equipment, when the punching equipment drives the upper die 100 to press down, the upper die 100 can press the plate on the lower die 500, and the punch mechanism 300 descends with the upper die 100, and the punch mechanism 300 can punch holes on the plate.

[0036] See also Figure 1 and Figure 2 The upper die 100 includes an upper die base 110, an upper backing plate 120, an upper pad 130, an upper clamping plate 140 and a stripping plate 150 connected in sequence from top to bottom. The stripping plate 150 is connected to the upper clamping plate 140 in a liftable manner. The upper pad 130 and the upper clamping plate 140 are respectively provided with a first through hole and a second through hole. The first through hole and the second through hole are coaxially arranged, and the first through hole has a larger cross section than the second through hole. The upper backing plate 120, the upper pad 130, the upper clamping plate 140 and the stripping plate 150 surround a cavity.

[0037] The punch mechanism 300 includes a moving assembly 310 and N punch pins 320. The moving assembly 310 is provided with 1 / 2N receiving holes 314. All receiving holes 314 are provided with elastic members 200. N is an integer greater than zero. All punch pins 320 are inserted through the through holes of the stripper plate 150. The upper ends of the punch pins 320 can abut against the lower surface of the moving assembly 310 or the lower end of the elastic member 200. The lower die 500 is provided below the stripper plate 150. The lower die 500 is provided with die holes 510 in the areas corresponding to the through holes. The die holes 510 are used for inserting the punch pins 320.

[0038] The switching mechanism 400 includes a linear drive mechanism 410, the output end of which is connected to the moving component 310. The linear drive mechanism 410 can drive the moving component 310 to move in the left and right directions in the cavity, so that the 1 / 2N punch needle 320 and the other 1 / 2N punch needle 320 alternately abut against the lower end of the elastic member 200 and push into the through hole, and abut against the lower surface of the moving component 310 to extend to the bottom of the stripping plate 150 and punch out the sheet.

[0039] When the sheet is between the stripper plate 150 and the lower die 500, the linear drive mechanism 410 drives the moving assembly 310 to move in the left-right direction in the cavity, so that 1 / 2N punches 320 abut against the lower end of the elastic member 200, and another 1 / 2N punches 320 abut against the lower surface of the moving assembly 310. The upper die 100 moves downward, so that the upper clamping plate 140 presses on the stripper plate 150, and the stripper plate 150 presses the sheet on the lower die 500, and 1 / 2N punches 320 abut against the sheet. Since the elastic member 200 can shrink, 1 / 2N punches 320 are retracted upward to penetrate the hole, and another 1 / 2N punches 320 are driven by the moving assembly 310 to extend downward from the stripper plate 150, and punch 1 / 2N holes in the sheet. Then, the upper die 100 moves upward, the stripper plate 150 descends relative to the upper clamping plate 140, the stripper plate 150 pushes the plate downward, and the 1 / 2N punches 320 sequentially withdraw from the holes and through holes on the plate, and the plate falls on the lower die 500 again.

[0040] Next, the linear drive mechanism 410 drives the moving assembly 310 to move in the left-right direction in the cavity, so that the moving assembly 310 is at another position in the cavity, and then 1 / 2N abuts against the lower surface of the moving assembly 310, and the other 1 / 2N punching needle 320 abuts against the lower end of the elastic member 200. Next, the upper die 100 moves downward again, so that the upper clamping plate 140 presses on the stripping plate 150 again, and the stripping plate 150 presses the sheet material on the lower die 500 again, and the other 1 / 2N punching needle 320 abuts against the sheet material. Since the elastic member 200 can shrink, the other 1 / 2N punching needle 320 retracts upward into the through hole, and the 1 / 2N punching needle 320 is driven by the moving assembly 310 to extend downward from the stripping plate 150, and punches out 1 / 2N holes on the sheet material again, and then punches out N holes on the sheet material, and obtains a product with N holes.

[0041] The N holes of the product are punched out twice by the punching device. Compared with the existing punching device that punches out N holes at one time, the number of punching needles 320 for punching the sheet is reduced, the deformation of the sheet and the final product is reduced, the processing quality of the product is improved, and the service life of the punching needles 320 can be increased; the pressure on the lower template is halved, the risk of deformation and rupture of the lower template is reduced, and while the service life of the lower template is increased, the maintenance frequency of the stamping device can be reduced, the reduction in production efficiency is avoided, and the production cost is reduced; the punching force is halved, and there is no need to use larger stamping equipment. Smaller stamping equipment can be used to drive the stamping device to complete the stamping process, thereby reducing the waste of production resources.

[0042] It can be understood that the number of punching needles 320, the number of die holes 510 and the number of punching holes required for the product are equal, the punching needles 320 and the die holes 510 are arranged one by one in the upper and lower parts, and the spaced punching needles 320 are arranged corresponding to the storage holes 314, so that the movable component 310 moves one position left and right, and the elastic member 200 can be transferred from abutting against one punching needle 320 to abutting against another punching needle 320 adjacent in the left and right directions, that is, the lower surface of the movable component 310 is transferred from abutting against one punching needle 320 to abutting against another punching needle 320 adjacent in the left and right directions.

[0043] See also Figure 1 and Figure 2 In some of the embodiments, a limiting groove is opened on the upper surface of the stripping plate 150, and an insert 151 is arranged in the limiting groove. The limiting groove limits the insert 151 on the stripping plate 150. The upper surface of the insert 151 is flush with the upper surface of the stripping plate 150. When the upper clamping plate 140 presses down the stripping plate 150, the insert 151 can be prevented from lifting the stripping plate 150.

[0044] The insert 151 and the stripper plate 150 are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are connected to each other. The punch needle 320 is penetrated through the first through hole and the second through hole, and the punch needle 320 can slide in the first through hole and the second through hole. The first through hole and the second through hole play the role of guiding the punch needle 320. The punch needle 320 can extend to the bottom of the stripper plate 150, so that the punch needle 320 punches the plate.

[0045] See also Figure 3 In some of the embodiments, the stamping device also includes a limit rod 600, and an oblong hole 311 is provided on the moving component 310. The oblong hole 311 passes through the moving component 310 from top to bottom, and the length direction of the oblong hole 311 is the left-right direction. The limit rod 600 is passed through the oblong hole 311, and the two ends of the limit rod 600 are respectively connected to the upper back plate 120 and the insert 151. The limit rod 600 can slide in the oblong hole 311. Since the position of the limit rod 600 is fixed, the limit rod 600 limits the moving component 310 to move in the left-right direction, and since the length of the oblong hole 311 is a fixed value, the stroke of the moving component 310 in the cavity is limited.

[0046] It is understandable that the moving assembly 310 includes a cushion block 312 and a moving block 313 connected up and down. The oblong hole 311 passes through the cushion block 312 and the moving block 313. There are four oblong holes 311 and four limit rods 600, and the four oblong holes 311 are distributed at the four corners of the cushion block 312 and the moving block 313, and the four limit rods 600 are passed through the four oblong holes 311.

[0047] In some of the embodiments, a third through hole and a fourth through hole are respectively provided on the upper pad 130 and the upper clamping plate 140, the third through hole and the fourth through hole are coaxially arranged, and the third through hole has a larger cross-section than the fourth through hole, the upper back plate 120, the inner wall of the third through hole, the inner wall of the fourth through hole and the stripping plate 150 form a cavity, the movable component 310 and N punching needles 320 are arranged in the cavity, and the length of the cavity in the left-right direction is larger than the length of the movable component 310 in the left-right direction, so that the movable component 310 and the N punching needles 320 can move in the cavity along the left-right direction.

[0048] The pad block 312 and the movable block 313 are respectively arranged in the third through hole and the fourth through hole. The left-right length of the third through hole is greater than the left-right length of the pad block 312, and the left-right length of the fourth through hole is greater than the left-right length of the movable block 313. The left-right length of the third through hole is greater than the left-right length of the fourth through hole. The pad block 312 is against the upper surface of the upper clamping plate 140, and the upper clamping plate 140 can support the pad block 312, and the pad block 312 can slide on the upper clamping plate 140 along the left-right direction.

[0049] The cushion block 312 and the moving block 313 are respectively provided with a fifth through hole and a sixth through hole, the fifth through hole and the sixth through hole are coaxially arranged and connected, and the elastic member 200 is passed through the fifth through hole and the sixth through hole.

[0050] See also Figure 1 The linear drive mechanism 410 is connected to the upper back plate 120, and the upper back plate 120 supports the linear drive mechanism 410. The upper clamping plate 140 is provided with a first avoidance hole connected to the cavity. The output end of the linear drive mechanism 410 is passed through the first avoidance hole and connected to the moving component 310. The setting of the first avoidance hole allows the linear drive mechanism 410 to be connected to the moving component 310 and drive the moving component 310 to move in the left and right directions.

[0051] It is understandable that the linear drive mechanism 410 is a cylinder, and the piston rod of the cylinder is connected to the moving assembly 310 through a connecting rod. Specifically, a slide rail is provided on the left end face or the right end face of the moving block 313, and the length direction of the slide rail is the up-down direction. A slider is provided on the slide rail, and the slider is connected to the connecting rod.

[0052] See also Figure 1 In some embodiments, the lower die 500 further includes a lower die plate 520, a lower pad 530 and a base 540 connected sequentially from top to bottom, wherein the die hole 510 is provided on the lower die plate 520, and the lower pad 530 is provided with a second avoidance hole 531 interconnected with the die hole 510, and the aperture of the second avoidance hole 531 is larger than the aperture of the die hole 510. When the punching needle 320 punches the sheet, the punching needle 320 punches out the area of ​​the sheet corresponding to the die hole 510 to obtain waste, which can be discharged through the die hole 510 and the second avoidance hole 531 in sequence.

[0053] In some of the embodiments, the base 540 includes a base 541, a lower foot assembly 542, a support column 543 and a lower support plate 544, wherein the base 541 is disposed below the lower pad 530, the base 541 is connected to the lower pad 530 and the base 541 and the lower pad 530 are attached together, and the lower foot assembly 542 and the support column 543 are located between the base 541 and the lower support plate 544.

[0054] The lower foot assembly 542 is a plate-shaped support member, and there are four lower foot assemblies 542, which are evenly distributed between the base 541 and the lower support plate 544 along the left-right direction. There are five support columns 543, which are all distributed on the lower support plate 544, and the five support columns 543 are directly below the punch mechanism 300.

[0055] In some embodiments, a waste discharge channel 545 is provided on the base 541 and is interconnected with the second avoidance hole 531. A waste collection bucket 546 is provided below the waste discharge channel 545. The waste collection bucket 546 is connected to the base 541 or the lower support plate 544 by bolts. The waste generated by stamping can fall into the waste collection bucket 546 from top to bottom through the die hole 510, the avoidance hole 531, and the waste discharge channel 545 in sequence.

[0056] Further, the lower mold 500 further includes a guide post and a guide sleeve that cooperate with each other, the guide post is connected to the lower mold plate 520, and the guide sleeve is connected to the stripper plate 150. There are four guide posts and four guide sleeves, and the four guide sleeves are distributed at the four corners of the stripper plate 150.

[0057] See also Figure 4 In some embodiments, the product bracket 700 includes a first support rod 710 and a second support rod 720, one end of the first support rod 710 is arranged on the base 541 through a first fixing member, and the first support rod 710 is located on the side of the lower pad 530, and the second support rod 720 is connected to the other end of the first support rod 710 through a second fixing member. A cushion block is provided on the second support rod 720, and the cushion block supports the plate so that the plate can be placed flat on the lower template 520, ensuring that the plate is not easily deformed and offset during the stamping process.

[0058] In some embodiments, the elastic member 200 is a spring pin.

[0059] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0060] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dense hole punching device, characterized in that: include: An upper die comprises an upper die base, an upper backing plate, an upper pad, an upper clamping plate and a stripping plate connected in sequence from top to bottom, wherein the stripping plate is movably connected to the upper clamping plate, and the upper backing plate, the upper pad, the upper clamping plate and the stripping plate form a cavity; A punch mechanism, comprising a moving component and N punch needles, wherein the moving component is provided with 1 / 2N receiving holes, and elastic members are provided in all the receiving holes, wherein N is an integer greater than zero, and all the punch needles are inserted into the through holes of the stripping plate, and the upper ends of the punch needles can abut against the lower surface of the moving component or the lower end of the elastic member; A lower die is arranged below the stripper plate, and the lower die is provided with die holes in the area corresponding to the through hole, and the die holes are used for the punching needle to be inserted; The switching mechanism includes a linear drive mechanism, the output end of which is connected to the moving component. The linear drive mechanism can drive the moving component to move in the left and right directions in the cavity, so that 1 / 2N of the punching needles and another 1 / 2N of the punching needles alternately abut against the lower end of the elastic member and push into the through hole, and abut against the lower surface of the moving component to extend to the bottom of the stripping plate and punch out the sheet.

2. A dense hole punching device according to claim 1, characterized in that: A limiting groove is provided on the upper surface of the stripping plate, an insert is provided in the limiting groove, the insert and the stripping plate are respectively provided with a first through hole and a second through hole, the first through hole and the second through hole are interconnected, and the punching needle can be penetrated through the first through hole and the second through hole to extend to the bottom of the stripping plate and punch the plate.

3. A dense hole punching device according to claim 2, characterized in that: It also includes a limit rod, and the moving component is provided with an oblong hole, the length direction of the oblong hole is the left and right direction, the limit rod is passed through the oblong hole, and the two ends of the limit rod are respectively connected to the upper back plate and the insert, and the limit rod limits the travel of the moving component in the cavity along the left and right direction.

4. A dense hole punching device according to claim 1, characterized in that: The upper pad and the upper clamp are respectively provided with a third through hole and a fourth through hole, the third through hole and the fourth through hole are coaxially arranged, and the third through hole is larger in cross section than the fourth through hole, the moving assembly comprises a cushion block and a moving block connected up and down, the cushion block and the moving block are respectively arranged in the third through hole and the fourth through hole, the cushion block rests on the upper surface of the upper clamp and can slide on the upper clamp, the cushion block and the moving block are respectively provided with a fifth through hole and a sixth through hole, the elastic member is passed through the fifth through hole and the sixth through hole.

5. The dense hole punching device according to claim 1, characterized in that: The linear drive mechanism is connected to the upper back plate, the upper clamping plate is provided with a first avoidance hole communicating with the cavity, and the output end of the linear drive mechanism is passed through the first avoidance hole and connected to the moving component.

6. The dense hole punching device according to claim 1, characterized in that: The lower mold comprises a lower mold plate, a lower pad and a base which are sequentially connected from top to bottom, the mold hole is arranged on the lower mold plate, a second avoidance hole is arranged on the lower pad, and the mold hole is communicated with the second avoidance hole.

7. A dense hole punching device according to claim 6, characterized in that: The base comprises a pedestal, a lower foot assembly, a support column and a lower supporting plate, wherein the lower foot assembly and the support column are arranged between the pedestal and the lower supporting plate, and the pedestal is connected to the lower supporting plate and is located below the lower supporting plate.

8. A dense hole punching device according to claim 7, characterized in that: The base is provided with a waste discharge channel, the waste discharge channel is communicated with the second avoidance hole, and a waste collection bucket is provided below the waste discharge channel.

9. A dense hole punching device according to claim 7 or 8, characterized in that: It also includes a product bracket, which includes a first support rod and a second support rod, one end of the first support rod is connected to the base, and the other end of the first support rod is connected to the second support rod, and the second support rod can support the plate.

10. The dense hole punching device according to claim 1, characterized in that: The elastic member is a spring pin.

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