Diaphragm punching separation finger mold

Abstract

The invention relates to a diaphragm punching separation finger mold, and belongs to the field of punching. Comprising an upper die mechanism, a lower die mechanism, a plurality of outer guide columns and a plurality of cushion blocks. A plurality of separated finger punching nuts are arranged in the lower die mechanism, each separated finger punching nut is composed of a left separated finger punching nut and a right separated finger punching nut, the left separated finger punching nuts and the right separated finger punching nuts are detachably and symmetrically arranged, and the left separated finger punching nuts and the right separated finger punching nuts are of block-shaped structures with grooves formed in the ends, close to each other, of the left separated finger punching nuts and the right separated finger punching nuts. When the left separation finger punching nut and the right separation finger punching nut are symmetrically arranged, the groove in the left separation finger punching nut and the groove in the right separation finger punching nut form a punching hole, the punching hole is a through hole, and a plurality of material clamping protruding blocks are arranged on the inner wall of the punching hole. According to the invention, the situation that cut workpiece wastes are upwards taken out of the blanking hole when the separating finger punch upwards retreats is avoided, so that the problem of part scrapping caused by impressing or scratching of the workpiece wastes on parts is avoided.

Description

Technical Field

[0001] The invention relates to the field of punching, in particular to a diaphragm punching and separation finger mold. Background Art

[0002] During the punching and cutting process of the punch press, the separation finger punch will pass through the separation finger punch nut and cut out the hole shape set in advance on the separation finger punch nut on the workpiece, and the cut workpiece will pass downward through the separation finger punch nut under the punching action of the separation finger punch. However, since most workpieces are made of metal and have a certain degree of ductility, burrs often appear on the edges of the cut part of the workpiece after the workpiece is cut. Due to the presence of these burrs, when the separation finger punch retreats upward, the waste of the cut part of the workpiece will be brought upward out of the separation finger punch nut. If the operator is not careful, it will produce an imprint on the part, causing the part to be scrapped, which is not conducive to large-scale continuous processing. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a membrane punching and separation fingerprint to solve the above problem.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a diaphragm punching separation finger mold, comprising: an upper mold mechanism, a lower mold mechanism, a plurality of outer guide pillars and a plurality of pads; the outer guide pillars can be penetrably arranged between the upper mold mechanism and the lower mold mechanism, the upper mold mechanism is arranged above the lower mold mechanism, and the lower mold mechanism is arranged on the pad; a plurality of separation finger punch nuts are arranged in the lower mold mechanism, the separation finger punch nuts are composed of a left separation finger punch nut and a right separation finger punch nut, the left separation finger punch nut and the right separation finger punch nut are detachably arranged symmetrically, the left separation finger punch nut and the right separation finger punch nut are both block structures with a groove arranged at one end close to each other, when the left separation finger punch nut and the right separation finger punch nut are symmetrically arranged, the groove on the left separation finger punch nut and the groove on the right separation finger punch nut form a punching hole, the punching hole is a through hole, and a plurality of clamping protrusions are arranged on the inner wall of the punching hole.

[0005] The beneficial effects of the present invention are as follows: the separation finger punch nut is arranged to be detachably connected by a left separation finger punch nut and a right separation finger punch nut, and a plurality of material-clamping protrusions are arranged on the inner wall of the punching hole, which is beneficial to preventing the cut workpiece waste from being brought upward out of the punching hole when the separation finger punch retreats upward, thereby avoiding the problem of scrapping parts due to imprinting or scratching of the parts by the workpiece waste, which is beneficial to large-scale continuous processing and improves processing efficiency.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the clamping protrusion is a block-shaped structure protruding toward the center of the separation finger punch, and the protruding distance is 0.1-0.3 mm.

[0008] The beneficial effect of adopting the above further solution is that the clamping convexity protrudes toward the center of the separation finger punch, which is conducive to clamping the workpiece waste that moves upward and preventing the workpiece waste from passing through the punching hole and contacting the part.

[0009] Furthermore, the upper die mechanism includes: an upper die seat, an upper pad, a punch fixing plate, an upper unloading plate, multiple punch devices, multiple equal height limit devices, multiple upper fixing devices, multiple springs and multiple inner guide pillars; the upper die seat and the punch fixing plate are arranged one by one at the upper and lower ends of the upper pad, the upper die seat, the upper pad and the punch fixing plate are connected through the upper fixing device, the upper unloading plate is horizontally arranged below the punch fixing plate, the equal height limit device passes through the upper die seat, the upper pad and the punch fixing plate, and is connected to the upper unloading plate, the top and bottom ends of the spring are connected one by one with the punch fixing plate and the upper unloading plate, the upper end of the inner guide pillar is fixed in the punch fixing plate, the lower end passes through the upper unloading plate, and is adaptively connected to the lower die mechanism, the upper end of the punch device is detachably clamped in the punch fixing plate, and the lower end can adaptively pass through the punching hole after passing through the upper unloading plate.

[0010] The beneficial effects of adopting the above-mentioned further scheme are: the upper fixing device is conducive to fixing the upper die seat, the upper pad and the punch fixing plate together, thereby providing support for the stamping and cutting of the punch equipment, the spring is conducive to restoring the upper unloading plate to its original state after the stamping and cutting are completed under the action of elastic force, the equal height limit device is conducive to ensuring that the upper unloading plate is in a horizontal state during the stamping, cutting and rebound process, and the internal guide column is conducive to providing guidance for the clamping of the upper die mechanism and the lower die mechanism, thereby ensuring the clamping accuracy.

[0011] Furthermore, the punch equipment includes a separation finger punch and a punch insert; the punch insert is sleeved on the upper end of the separation finger punch, the outer wall of the punch insert is adapted to be clamped with the inner wall of the punch fixing plate, and the lower end of the separation finger punch passes through the upper unloading plate and then adapts to pass through the punching hole.

[0012] The beneficial effect of adopting the above further scheme is that the punch insert helps to reduce the wear on the separation finger punch and the punch fixing plate during the stamping and cutting process. At the same time, compared with directly replacing the punch fixing plate, replacing the punch insert will be more cost-effective.

[0013] Furthermore, the contour limit device includes a contour sleeve and connecting bolts; the contour sleeve passes through the upper die base, the upper pad and the punch fixing plate, and is hung on the upper end of the punch fixing plate, and the connecting bolt passes through the contour sleeve and is connected to the upper unloading plate.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that during the stamping and cutting process, the upper unloading plate is close to the punch fixing plate, which is conducive to the unimpeded up and down movement of the connecting bolts and the equal height sleeves in the upper die base, upper pad and punch fixing plate, thereby ensuring that the horizontal state of the upper unloading plate is continuously maintained, thereby ensuring the stamping and cutting effect.

[0015] Furthermore, the upper fixing device includes an upper connecting screw and an upper cylindrical pin; the upper connecting screw and the upper cylindrical pin both pass through the upper die seat and the upper pad, and are threadedly connected to the punch fixing plate.

[0016] The beneficial effect of adopting the above further scheme is that the upper connecting screws are conducive to fixing the upper die base, the upper pad and the punch fixing plate together, and the upper cylindrical pins are conducive to ensuring the position accuracy of the upper die base, the upper pad and the punch fixing plate.

[0017] Furthermore, the lower die mechanism also includes: a lower die base, a lower pad, a punch nut fixing plate, a positioning device, a plurality of lower fixing devices and a plurality of inner guide sleeves; the punch nut fixing plate and the lower die base are arranged one-to-one at the upper and lower ends of the lower pad, the lower die base, the lower pad and the punch nut fixing plate are connected by the lower fixing device, the positioning device is arranged at the top of the punch nut fixing plate, the inner guide sleeve is a tubular structure axially passing through the lower die base, the lower pad and the punch nut fixing plate, when the upper die mechanism and the lower die mechanism are close to each other, the plurality of inner guide columns are adapted to be inserted into the plurality of inner guide sleeves one-to-one, and the separation refers to the punch nut axially passing through the lower die base, the lower pad and the punch nut fixing plate.

[0018] The beneficial effects of adopting the above-mentioned further scheme are: the lower fixing device is conducive to fixing the lower die base, the lower pad and the punch nut fixing plate together, providing support force for the separation finger and punch nut during the stamping and cutting process; the positioning device is conducive to limiting the workpiece to be stamped and cut to avoid shaking during the stamping and cutting process; the inner guide sleeve and the inner guide column are conducive to providing guidance for the mold closing and ensuring the mold closing accuracy.

[0019] Furthermore, the positioning device includes a center hole positioning block and a plurality of window positioning columns, the center hole positioning block and the window positioning columns are both fixed on the punch mother fixing plate, the plurality of window positioning columns are arranged around the center hole positioning block, and the center hole positioning block and the window positioning columns are adapted to be connected with the workpiece to be punched.

[0020] The beneficial effect of adopting the above further solution is that the center hole positioning block and the window positioning column are conducive to positioning the workpiece to be punched and cut, avoiding punching errors caused by shaking during the punching and cutting process.

[0021] Furthermore, the lower fixing device includes a lower connecting screw and a lower cylindrical pin; the lower connecting screw and the lower cylindrical pin both pass through the lower die base and the lower pad, and are threadedly connected to the punch nut fixing plate.

[0022] The beneficial effect of adopting the above further solution is that the lower connecting screw is conducive to fixing the lower die base, the lower pad and the punch nut fixing plate together, and the lower cylindrical pin is conducive to ensuring the position accuracy of the lower die base, the lower pad and the punch nut fixing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A longitudinal cross-sectional view of the overall structure provided by an embodiment of the present invention;

[0024] Figure 2 A transverse cross-sectional view of the overall structure provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Upper die mechanism; 2. Lower die mechanism; 3. External guide pin; 4. Cushion block; 11. Upper die seat; 12. Upper pad; 13. Punch fixing plate; 14. Upper unloading plate; 15. Punch equipment; 16. Equal height limit equipment; 17. Upper fixing equipment; 18. Spring; 19. Internal guide pin; 21. Lower die seat; 22. Lower pad; 23. Punch nut fixing plate; 24. Positioning equipment; 25. Separation finger punch nut; 26. Lower fixing Equipment; 27, inner guide sleeve; 151, separation finger punch; 152, punch insert; 161, equal height sleeve; 162, connecting bolt; 171, upper connecting screw; 172, upper cylindrical pin; 241, center hole positioning block; 242, window positioning column; 251, left separation finger punch nut; 252, right separation finger punch nut; 253, punching hole; 254, clamping protrusion; 261, lower connecting screw; 262, lower cylindrical pin. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figures 1 to 3As shown, a diaphragm punch separation finger die comprises: an upper die mechanism 1, a lower die mechanism 2, a plurality of outer guide pins 3 and a plurality of cushion blocks 4; the outer guide pins 3 are arranged between the upper die mechanism 1 and the lower die mechanism 2 so as to be passable, the upper die mechanism 1 is arranged above the lower die mechanism 2, and the lower die mechanism 2 is arranged on the cushion blocks 4; a plurality of separation finger punches 25 are arranged in the lower die mechanism 2, and the separation finger punches 25 are composed of a left separation finger punch nut 251 and a right separation finger punch nut 252, and the left separation finger punch nut 25 1 and the right separation finger punch nut 252 are detachably arranged symmetrically, the left separation finger punch nut 251 and the right separation finger punch nut 252 are both block structures with a groove arranged at one end close to each other, when the left separation finger punch nut 251 and the right separation finger punch nut 252 are symmetrically arranged, the groove on the left separation finger punch nut 251 and the groove on the right separation finger punch nut 252 form a punching hole 253, the punching hole 253 is a through hole, and a plurality of clamping protrusions 254 are arranged on the inner wall of the punching hole 253.

[0030] It should be noted that: in the technical solution of the present invention, when the upper mold mechanism 1 and the lower mold mechanism 2 are close to each other for mold closing, the outer guide column 3 passes through the upper mold base 11 in the upper mold mechanism 1 and the lower mold base 21 in the lower mold mechanism 2.

[0031] The beneficial effects of the present invention are as follows: the separation finger punch nut is arranged to be detachably connected by a left separation finger punch nut and a right separation finger punch nut, and a plurality of material-clamping protrusions are arranged on the inner wall of the punching hole, which is beneficial to preventing the cut workpiece waste from being brought upward out of the punching hole when the separation finger punch retreats upward, thereby avoiding the problem of scrapping parts due to imprinting or scratching of the parts by the workpiece waste, which is beneficial to large-scale continuous processing and improves processing efficiency.

[0032] Preferably, Figure 3 As shown, the clamping protrusion 254 is a block-shaped structure protruding toward the center of the separation finger punch 25, and the protruding distance is 0.1-0.3 mm.

[0033] It should be noted that: in the technical solution of the present invention, the protruding distance is proportional to the thickness of the workpiece.

[0034] The beneficial effect of adopting the above preferred solution is that the clamping convexity protrudes toward the center of the separation finger punch, which is conducive to clamping the workpiece waste that moves upward and preventing the workpiece waste from passing through the punching hole and contacting the part.

[0035] Preferably, Figure 1As shown, the upper die mechanism 1 includes: an upper die base 11, an upper pad 12, a punch fixing plate 13, an upper unloading plate 14, a plurality of punch devices 15, a plurality of equal height limit devices 16, a plurality of upper fixing devices 17, a plurality of springs 18 and a plurality of inner guide pillars 19; the upper die base 11 and the punch fixing plate 13 are arranged one by one at the upper end and the lower end of the upper pad 12, the upper die base 11, the upper pad 12 and the punch fixing plate 13 are connected by the upper fixing device 17, the upper unloading plate 14 is horizontally arranged below the punch fixing plate 13, and the equal height limit devices 16 are arranged on the upper fixing device 17. The limiting device 16 passes through the upper die base 11, the upper pad 12 and the punch fixing plate 13, and is connected to the upper unloading plate 14. The top and bottom ends of the spring 18 are connected to the punch fixing plate 13 and the upper unloading plate 14 one by one. The upper end of the inner guide column 19 is fixed in the punch fixing plate 13, and the lower end passes through the upper unloading plate 14 and is adaptively connected to the lower die mechanism 2. The upper end of the punch device 15 is detachably clamped in the punch fixing plate 13, and the lower end can adaptably pass through the punching hole 253 after passing through the upper unloading plate 14.

[0036] The beneficial effects of adopting the above-mentioned preferred scheme are: the upper fixing device is conducive to fixing the upper die seat, the upper pad and the punch fixing plate together, thereby providing support for the punch equipment's stamping and cutting, the spring is conducive to restoring the upper unloading plate to its original state after the stamping and cutting are completed under the action of elastic force, the equal height limit device is conducive to ensuring that the upper unloading plate is in a horizontal state during the stamping and cutting and rebound process, and the internal guide column is conducive to providing guidance for the clamping of the upper die mechanism and the lower die mechanism, thereby ensuring the clamping accuracy.

[0037] Preferably, Figure 1 As shown, the punch device 15 includes a separation finger punch 151 and a punch insert 152; the punch insert 152 is sleeved on the upper end of the separation finger punch 151, the outer wall of the punch insert 152 is adapted to be clamped with the inner wall of the punch fixing plate 13, and the lower end of the separation finger punch 151 passes through the upper unloading plate 14 and then adapts to pass through the punching hole 253.

[0038] The beneficial effect of adopting the above-mentioned preferred scheme is that the punch insert is helpful to reduce the wear of the separation finger punch and the punch fixing plate during the stamping and cutting process. At the same time, compared with directly replacing the punch fixing plate, replacing the punch insert will be more cost-effective.

[0039] Preferably, Figure 1 As shown, the contour limit device 16 includes a contour sleeve 161 and a connecting bolt 162; the contour sleeve 161 passes through the upper die base 11, the upper pad 12 and the punch fixing plate 13, and is hung on the upper end of the punch fixing plate 13, and the connecting bolt 162 passes through the contour sleeve 161 and is connected to the upper unloading plate 14.

[0040] It should be noted that in the technical solution of the present invention, the connecting bolt 162 can smoothly pass through the contour sleeve 161, and the contour sleeve 161 can smoothly pass through the upper die seat 11, the upper pad 12 and the punch fixing plate 13.

[0041] The beneficial effect of adopting the above-mentioned preferred scheme is that during the stamping and cutting process, the upper unloading plate is close to the punch fixing plate, which is conducive to the unimpeded up and down movement of the connecting bolts and the equal height sleeves in the upper die base, upper pad and punch fixing plate, thereby ensuring that the horizontal state of the upper unloading plate is continuously maintained, thereby ensuring the stamping and cutting effect.

[0042] Preferably, Figure 1 As shown, the upper fixing device 17 includes an upper connecting screw 171 and an upper cylindrical pin 172 ; the upper connecting screw 171 and the upper cylindrical pin 172 both pass through the upper die seat 11 and the upper pad 12 , and are threadedly connected to the punch fixing plate 13 .

[0043] The beneficial effects of adopting the above preferred solution are: the upper connecting screws are conducive to fixing the upper die base, the upper pad and the punch fixing plate together, and the upper cylindrical pins are conducive to ensuring the position accuracy of the upper die base, the upper pad and the punch fixing plate.

[0044] Preferably, Figure 1 As shown, the lower die mechanism 2 also includes: a lower die base 21, a lower pad 22, a punch nut fixing plate 23, a positioning device 24, a plurality of lower fixing devices 26 and a plurality of inner guide sleeves 27; the punch nut fixing plate 23 and the lower die base 21 are arranged one-to-one at the upper and lower ends of the lower pad 22, the lower die base 21, the lower pad 22 and the punch nut fixing plate 23 are connected by the lower fixing device 26, the positioning device 24 is arranged at the top of the punch nut fixing plate 23, the inner guide sleeve 27 is a tubular structure axially passing through the lower die base 21, the lower pad 22 and the punch nut fixing plate 23, when the upper die mechanism 1 and the lower die mechanism 2 are close to each other, the plurality of inner guide columns 19 are adapted to be inserted into the plurality of inner guide sleeves 27 one-to-one, and the separation finger punch nut 25 axially passes through the lower die base 21, the lower pad 22 and the punch nut fixing plate 23.

[0045] The beneficial effects of adopting the above-mentioned preferred scheme are: the lower fixing device is conducive to fixing the lower die base, the lower pad and the punch nut fixing plate together, providing support force for the separation finger and the punch nut during the stamping and cutting process; the positioning device is conducive to limiting the workpiece to be stamped and cut to avoid shaking during the stamping and cutting process; the inner guide sleeve and the inner guide column are conducive to providing guidance for the mold closing and ensuring the mold closing accuracy.

[0046] Preferably, Figure 1As shown, the positioning device 24 includes a center hole positioning block 241 and a plurality of window positioning columns 242, the center hole positioning block 241 and the window positioning columns 242 are both fixed on the punch mother fixing plate 23, the plurality of window positioning columns 242 are arranged around the center hole positioning block 241, and the center hole positioning block 241 and the window positioning columns 242 are adapted to be connected with the workpiece to be punched.

[0047] The beneficial effect of adopting the above preferred solution is that the center hole positioning block and the window positioning column are conducive to positioning the workpiece to be punched and cut, avoiding punching errors caused by shaking during the punching and cutting process.

[0048] Preferably, Figure 1 As shown, the lower fixing device 26 includes a lower connecting screw 261 and a lower cylindrical pin 262 ; the lower connecting screw 261 and the lower cylindrical pin 262 both pass through the lower die base 21 and the lower pad 22 , and are threadedly connected to the punch nut fixing plate 23 .

[0049] The beneficial effect of adopting the above preferred solution is that the lower connecting screw is conducive to fixing the lower die base, the lower pad and the punch nut fixing plate together, and the lower cylindrical pin is conducive to ensuring the position accuracy of the lower die base, the lower pad and the punch nut fixing plate.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A membrane punching and separation fingerprint, characterized in that: include: An upper die mechanism (1), a lower die mechanism (2), a plurality of outer guide pillars (3) and a plurality of cushion blocks (4); the outer guide pillars (3) are arranged between the upper die mechanism (1) and the lower die mechanism (2) in a penetrable manner, the upper die mechanism (1) is arranged above the lower die mechanism (2), and the lower die mechanism (2) is arranged on the cushion blocks (4); A plurality of separation finger punches (25) are arranged in the lower die mechanism (2), and the separation finger punches (25) are composed of a left separation finger punch (251) and a right separation finger punch (252). The left separation finger punch (251) and the right separation finger punch (252) are detachably and symmetrically arranged. The left separation finger punch (251) and the right separation finger punch (252) are both block structures with grooves arranged at one end close to each other. When the left separation finger punch (251) and the right separation finger punch (252) are symmetrically arranged, the grooves on the left separation finger punch (251) and the grooves on the right separation finger punch (252) form a punching hole (253), and the punching hole (253) is a through hole. A plurality of material-clamping protrusions (254) are arranged on the inner wall of the punching hole (253).

2. A membrane punching and separation fingerprint according to claim 1, characterized in that: The clamping protrusion (254) is a block-shaped structure protruding toward the center of the separation finger punch (25), and the protruding distance is 0.1-0.3 mm.

3. A membrane punching and separation fingerprint according to claim 1, characterized in that: The upper die mechanism (1) comprises: an upper die seat (11), an upper pad (12), a punch fixing plate (13), an upper unloading plate (14), a plurality of punch devices (15), a plurality of equal height limit devices (16), a plurality of upper fixing devices (17), a plurality of springs (18) and a plurality of inner guide pillars (19); The upper die seat (11) and the punch fixing plate (13) are arranged one by one at the upper end and the lower end of the upper pad (12); the upper die seat (11), the upper pad (12) and the punch fixing plate (13) are connected by the upper fixing device (17); the upper unloading plate (14) is horizontally arranged below the punch fixing plate (13); the equal height limiting device (16) passes through the upper die seat (11), the upper pad (12) and the punch fixing plate (13) and is connected to the upper unloading plate (14). The upper end and the lower end of the spring (18) are connected to the punch fixing plate (13) and the upper unloading plate (14) in a one-to-one correspondence; the upper end of the inner guide column (19) is fixed in the punch fixing plate (13), and the lower end passes through the upper unloading plate (14) and is adaptively connected to the lower die mechanism (2); the upper end of the punch device (15) is detachably clamped in the punch fixing plate (13), and the lower end can adaptively pass through the punching hole (253) after passing through the upper unloading plate (14).

4. A membrane punching and separation fingerprint according to claim 3, characterized in that: The punch device (15) comprises a separation finger punch (151) and a punch insert (152); the punch insert (152) is sleeved on the upper end of the separation finger punch (151), the outer wall of the punch insert (152) is adapted to be clamped with the inner wall of the punch fixing plate (13), and the lower end of the separation finger punch (151) passes through the upper unloading plate (14) and then passes through the punching hole (253).

5. A membrane punching and separation fingerprint according to claim 3, characterized in that: The contour limit device (16) comprises a contour sleeve (161) and a connecting bolt (162); the contour sleeve (161) passes through the upper die seat (11), the upper pad (12) and the punch fixing plate (13), and is hung on the upper end of the punch fixing plate (13); the connecting bolt (162) passes through the contour sleeve (161) and is connected to the upper unloading plate (14).

6. A membrane punching and separation fingerprint according to claim 3, characterized in that: The upper fixing device (17) comprises a plurality of upper connecting screws (171) and a plurality of upper cylindrical pins (172); the upper connecting screws (171) and the upper cylindrical pins (172) both pass through the upper die seat (11) and the upper pad (12), and are threadedly connected to the punch fixing plate (13).

7. A membrane punching and separation fingerprint according to claim 3, characterized in that: The lower die mechanism (2) further comprises: a lower die base (21), a lower pad (22), a punch fixing plate (23), a positioning device (24), a plurality of lower fixing devices (26) and a plurality of inner guide sleeves (27); The punch nut fixing plate (23) and the lower die base (21) are arranged one by one at the upper end and the lower end of the lower pad (22); the lower die base (21), the lower pad (22) and the punch nut fixing plate (23) are connected by the lower fixing device (26); the positioning device (24) is arranged at the top of the punch nut fixing plate (23); the inner guide sleeve (27) is a tubular structure axially passing through the lower die base (21), the lower pad (22) and the punch nut fixing plate (23); when the upper die mechanism (1) and the lower die mechanism (2) are close to each other, the plurality of inner guide pillars (19) are adapted to be inserted into the plurality of inner guide sleeves (27) one by one; the separation finger punch nut (25) axially passes through the lower die base (21), the lower pad (22) and the punch nut fixing plate (23).

8. A membrane punching and separation fingerprint according to claim 7, characterized in that: The positioning device (24) comprises a center hole positioning block (241) and a plurality of window positioning columns (242); the center hole positioning block (241) and the window positioning columns (242) are both fixed on the punch mother fixing plate (23); the plurality of window positioning columns (242) are arranged around the center hole positioning block (241); the center hole positioning block (241) and the window positioning columns (242) are adapted to be connected with a workpiece to be punched.

9. A membrane punching and separation fingerprint according to claim 7, characterized in that: The lower fixing device (26) comprises a lower connecting screw (261) and a lower cylindrical pin (262); the lower connecting screw (261) and the lower cylindrical pin (262) both pass through the lower die base (21) and the lower pad (22), and are threadedly connected to the punch nut fixing plate (23).

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