Punching device

Abstract

The utility model provides a stamping device. The stamping device comprises a rack; the driving part is arranged on the rack; a stamping groove is formed in the top of the first die, at least one end of the stamping groove is open, and the top of the first die is used for containing a to-be-stamped workpiece; the second die is located above the first die, a stamping protrusion is arranged at the bottom of the second die, the shape of the stamping protrusion is matched with that of the stamping groove, and the driving part is in driving connection with the second die so that the stamping protrusion can be buckled with or separated from the stamping groove; and the stop piece is arranged on one side of the opening of the stamping groove and used for being in stop fit with the end of the to-be-stamped workpiece. By means of the scheme, the problem that in the prior art, in the stamping process, a to-be-stamped plate is supported by a worker, and the stamping precision is difficult to guarantee can be solved.

Description

Technical Field

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

[0002] At present, the sheet is usually punched by a punching device. The existing punching device includes a driving member and a first die and a second die that are arranged opposite to each other, the first die is provided with a punching groove, at least one end of the punching groove is an open structure, the second die is provided with a punching protrusion that is arranged opposite to the punching groove, and the distance between the first die and the second die is adjustable so that the punching protrusion and the punching groove are engaged or separated with each other, wherein the driving member is drivingly connected to one of the first die and the second die.

[0003] When using the punching device in the prior art, the sheet to be punched is placed between the first die and the second die, and the staff needs to support the sheet to prevent the sheet from moving along the length direction of the punching groove. When the staff supports the sheet, the stability of the sheet is poor, and it is difficult to ensure the punching accuracy. Utility Model Content

[0004] The utility model provides a punching device to solve the problem in the prior art that it is difficult to ensure the punching accuracy by workers supporting the sheet to be punched during the punching process.

[0005] The utility model provides a stamping device, which comprises: a frame; a driving part, which is arranged on the frame; a first mold, a stamping groove is arranged on the top, at least one end of the stamping groove is open, and the top of the first mold is used to place a workpiece to be stamped; a second mold is located above the first mold, a stamping protrusion is arranged on the bottom of the second mold, the shape of the stamping protrusion is matched with the shape of the stamping groove, the driving part is connected to the second mold to make the stamping protrusion engage or separate with the stamping groove; a stopper is arranged on one side of the opening of the stamping groove, and the stopper is used to stop the end of the workpiece to be stamped.

[0006] Furthermore, the stamping device also includes: an extension plate, which is arranged on the frame, the extension plate is located on the side of the first mold with an opening, the extension direction of the extension plate is the same as the extension direction of the stamping groove, the stopper is movably arranged on the extension plate, and the distance between the stopper and the first mold is adjustable.

[0007] Furthermore, a slide groove is arranged on the extension plate, the extension direction of the slide groove is the same as the extension direction of the extension plate, the extension plate is movably arranged in the slide groove, and the stamping device also includes: a locking member, and the stopper is fixedly connected to the extension plate through the locking member.

[0008] Furthermore, the slide groove is arranged through the extension plate along the thickness direction of the extension plate, and the stop member includes: a stop portion, including a stop plate and a protrusion connected to each other, the protrusion is movably arranged in the slide groove, the stop plate is located above the extension plate and abuts against the top surface of the extension plate; a clamping portion, located below the extension plate, the clamping portion is clamped with the protrusion, and the clamping portion abuts against the bottom surface of the extension plate; wherein the locking member passes through the stop plate and abuts against the top surface of the extension plate, the locking member is threadedly engaged with the stop plate, and the locking member cooperates with the clamping portion to fix the stop portion.

[0009] Furthermore, the stamping device also includes: a first transfer seat, which is detachably arranged on the frame, and the first mold is detachably arranged on the first transfer seat.

[0010] Furthermore, the frame includes a supporting plate, a first limiting groove is provided on the top surface of the supporting plate, a cross-sectional area of ​​the bottom end of the first limiting groove is larger than a cross-sectional area of ​​the top end of the first limiting groove, a first adapter seat is located above the supporting plate, and a first connecting hole is provided on the first adapter seat; the stamping device also includes: a first limiting part, the bottom end of the first limiting part is provided in the first limiting groove, and is limitedly matched with the first limiting groove 1101, the top end of the first limiting part passes through the first connecting hole and is located above the first adapter seat; a first fastening nut, which is threadedly matched with the top end of the first limiting part.

[0011] Furthermore, the stamping device also includes: a first fastener, which is arranged between the first adapter and the first mold, and the first adapter and the first mold are detachably connected through the first fastener.

[0012] Furthermore, the stamping device also includes: a second adapter seat, which is detachably arranged on the driving part, and the second mold is detachably arranged on the second adapter seat.

[0013] Further, the driving part includes a driving end, which is located above the first mold, close to or far away from the first mold, and a second limiting groove is provided on the side of the driving end close to the first mold, the cross-sectional area of ​​the top end of the second limiting groove is larger than the cross-sectional area of ​​the bottom end of the second limiting groove, and the second adapter seat is located below the driving end, and a second connecting hole is provided on the second adapter seat; the stamping device also includes: a second limiting part, the top end of the second limiting part is located in the second limiting groove and is limitedly matched with the second limiting groove, the bottom end of the second limiting part passes through the second connecting hole and is located below the second adapter seat; a second fastening nut, which is threadedly matched with the bottom end of the second limiting part.

[0014] Furthermore, the stamping device also includes: a second fastener, which is arranged between the second adapter and the second mold, and the second adapter and the second mold are detachably connected through the second fastener.

[0015] Furthermore, a groove wall of the stamping groove is provided with a receiving groove, and the receiving groove is communicated with the stamping groove.

[0016] By applying the technical solution of the utility model, when stamping a plate, the end of the plate can be limited by the stopper, which improves the stability of the plate when stamping the plate and improves the smoothness of the stamping process. In the traditional technical solution, the plate needs to be supported by staff to improve the stability of the plate. Compared with the traditional technical solution, the setting of this solution can limit the movement of the plate along the length direction of the stamping groove through the cooperation of the stopper and the end stop of the plate, thereby improving the stability of the plate during the pressurization process and improving the stamping accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the punching device provided by the embodiment of the utility model is shown;

[0019] Figure 2 An exploded view of the local structure of the punching device provided by the embodiment of the utility model is shown;

[0020] Figure 3 It shows a schematic structural diagram of the cooperation between the extension plate and the stopper provided in the embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the structure of a first adapter provided by an embodiment of the utility model is shown;

[0022] Figure 5 A schematic structural diagram of a first mold provided by an embodiment of the utility model is shown;

[0023] Figure 6 A schematic diagram of the structure of a second adapter provided by an embodiment of the utility model is shown;

[0024] Figure 7 A schematic structural diagram of a second mold provided in an embodiment of the utility model is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Frame; 11. Loading plate; 1101. First limiting groove;

[0027] 20. driving unit; 2001. second limiting groove;

[0028] 30. first mold; 301. punching groove; 3011. receiving groove;

[0029] 40. Second mold;

[0030] 50. Stopper;

[0031] 51. Stopper;

[0032] 511, stop plate; 512, bump;

[0033] 52. Clamping part;

[0034] 60, extension plate; 601, slideway;

[0035] 70. Locking piece;

[0036] 81. first adapter seat; 82. first position limiting portion; 83. first fastening nut; 84. first fastening member;

[0037] 91. Second adapter seat; 92. Second limiting portion; 93. Second fastening nut; 94. Second fastening member. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a stamping device, which includes a frame 10, a driving unit 20, a first mold 30, a second mold 40 and a stopper 50. The driving unit 20 is arranged on the frame 10. A stamping groove 301 is arranged on the top of the first mold 30, and at least one end of the stamping groove 301 is open. The top of the first mold 30 is used to place the workpiece to be stamped. The second mold 40 is located above the first mold 30, and a stamping protrusion is arranged on the bottom of the second mold 40. The shape of the stamping protrusion is adapted to the shape of the stamping groove 301. The driving unit 20 is connected to the second mold 40 so that the stamping protrusion is engaged or separated with the stamping groove 301. The stopper 50 is arranged on one side of the opening of the stamping groove 301, and the stopper 50 is used to stop the end of the workpiece to be stamped.

[0040] When stamping the plate, the end of the plate can be limited by the stopper 50, which improves the stability of the plate when stamping the plate and improves the smoothness of the stamping process. In the traditional technical solution, the plate needs to be supported by staff to improve the stability of the plate. Compared with the traditional technical solution, the setting of this solution can limit the movement of the plate along the length direction of the stamping groove 301 through the cooperation of the stopper 50 and the end stop of the plate, thereby improving the stability of the plate during the pressurization process and improving the stamping accuracy.

[0041] In this embodiment, the length direction of the punching slot 301 is the same as the length direction of the frame 10 , and both ends of the punching slot 301 in the length direction are open.

[0042] Furthermore, the punching device further includes an extension plate 60, which is disposed on the frame 10, and is located on one side of one of the openings of the first die 30, and the extension direction of the extension plate 60 is the same as the extension direction of the punching slot 301, and the stopper 50 is movably disposed on the extension plate 60, and the distance between the stopper 50 and the first die 30 is adjustable. In this way, the distance between the stopper 50 and the first die 30 can be adjusted, so that the device of this solution can adapt to plates of different lengths, thereby improving the adaptability of the device.

[0043] Specifically, the extension plate 60 is provided with a slide groove 601, the extension direction of the slide groove 601 is the same as the extension direction of the extension plate 60, and the extension plate 60 is movably arranged in the slide groove 601. The punching device also includes a locking member 70, and the stopper 50 is fixedly connected to the extension plate 60 through the locking member 70. The setting of the slide groove 601 can guide and limit the movement of the stopper 50, thereby improving the stability of the stopper 50 during the movement. The setting of the locking member 70 has a simple structure and is convenient for fixing the stopper 50.

[0044] like Figure 2 and Figure 3As shown, in this embodiment, the slide groove 601 is arranged through the extension plate 60 along the thickness direction of the extension plate 60, the stopper 50 includes a stopper portion 51 and a clamping portion 52, the stopper portion 51 includes a stopper plate 511 and a protrusion 512 connected to each other, the protrusion 512 is movably arranged in the slide groove 601, the stopper plate 511 is located above the extension plate 60 and abuts against the top surface of the extension plate 60. The clamping portion 52 is located below the extension plate 60, the clamping portion 52 is clamped with the protrusion 512, and the clamping portion 52 abuts against the bottom surface of the extension plate 60. Among them, the locking member 70 passes through the stopper plate 511 and abuts against the top surface of the extension plate 60, the locking member 70 is threadedly engaged with the stopper plate 511, and the locking member 70 cooperates with the clamping portion 52 to fix the stopper portion 51. The above arrangement can facilitate the connection between the stop member 50 and the extension plate 60, so that the stop member 50 can be movably inserted into the slide groove 601, and a part of the stop member 50 is located above the extension plate 60, and the other part is located below the extension plate 60, so as to facilitate the cooperation between the locking member 70 and the protrusion 512 to achieve the fixation of the stop portion 51.

[0045] In this embodiment, a card slot is provided at the bottom end of the card portion 52, and the cross-section of the card slot is trapezoidal. The top end of the card portion 52 can be movably inserted into the card slot and cooperate with the card slot limiter. The other end of the card portion 52 is located on the outside of the card slot and abuts against the bottom surface of the extension plate 60.

[0046] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the punching device further includes a first adapter 81, which is detachably arranged on the frame 10, and the first mold 30 is detachably arranged on the first adapter 81. Such arrangement facilitates the disassembly and assembly of the first mold 30, so as to facilitate the replacement of the first mold 30 of different sizes.

[0047] Specifically, the frame 10 includes a bearing plate 11, a first limiting groove 1101 is provided on the top surface of the bearing plate 11, the cross-sectional area of ​​the bottom end of the first limiting groove 1101 is larger than the cross-sectional area of ​​the top end of the first limiting groove 1101, and the first adapter seat 81 is located above the bearing plate 11, and a first connecting hole is provided on the first adapter seat 81. The stamping device also includes a first limiting portion 82 and a first fastening nut 83. Among them, the bottom end of the first limiting portion 82 is arranged in the first limiting groove 1101, and is limitedly matched with the first limiting groove 1101, and the top end of the first limiting portion 82 passes through the first connecting hole and is located above the first adapter seat 81; the first fastening nut 83 is threadedly matched with the top end of the first limiting portion 82. Such a configuration has a simple structure and is convenient for connecting the first adapter seat 81 and the bearing plate 11.

[0048] In this embodiment, the length direction of the supporting plate 11 is the same as the length direction of the frame 10, the length direction of the first limiting groove 1101 is the same as the length direction of the supporting plate 11, both ends of the first limiting groove 1101 are open, and the cross-section of the first limiting groove 1101 is an inverted T-shape.

[0049] Furthermore, the stamping device further includes a first fastener 84, which is disposed between the first adapter 81 and the first mold 30, and the first adapter 81 and the first mold 30 are detachably connected via the first fastener 84. With such a configuration, the structure is simple and the connection between the first adapter 81 and the first mold 30 is easily realized.

[0050] Specifically, the top surface of the first adapter seat 81 is provided with a first mounting groove, the bottom end of the first mold 30 is inserted into the first mounting groove, and the circumference of one end of the first mold 30 inserted into the first mounting groove is provided with a first threaded hole. The first fastener 84 includes a first bolt, which passes through the first adapter seat 81 and penetrates into the first mounting groove and is threadedly connected with the first threaded hole. Such a configuration has a simple structure and can improve the stability of the connection between the first mold 30 and the first adapter seat 81.

[0051] In this embodiment, a plurality of first fasteners 84 are arranged at intervals along the circumference of the first adapter seat 81. Such an arrangement can further improve the stability of the connection between the first adapter seat 81 and the first mold 30.

[0052] In this embodiment, the groove wall of the punching groove 301 is provided with a receiving groove 3011, and the receiving groove 3011 is connected to the punching groove 301. Specifically, the punching groove 301 includes a first side wall and a second side wall connected to each other, and the first side wall and the second side wall are both inclined, and there is an angle between the second side wall and the second side wall. The first side wall and the second side wall are both provided with a receiving groove 3011, and the receiving groove 3011 is used to accommodate debris generated during the stamping process of the plate. Such a configuration reduces or avoids the possibility of debris falling onto the frame 10.

[0053] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the punching device further includes a second adapter seat 91, which is detachably arranged on the driving part 20, and the second mold 40 is detachably arranged on the second adapter seat 91. Such arrangement facilitates the disassembly and replacement of the second mold 40, so as to facilitate the replacement of the second mold 40 of different sizes.

[0054] In this embodiment, the driving part 20 includes a driving end, the driving end is located above the first mold 30, the driving end is close to or away from the first mold 30, a second limiting groove 2001 is provided on the side of the driving end close to the first mold 30, the cross-sectional area of ​​the top of the second limiting groove 2001 is larger than the cross-sectional area of ​​the bottom of the second limiting groove 2001, the second adapter seat 91 is located below the driving end, and the second adapter seat 91 is provided with a second connecting hole; the stamping device also includes a second limiting portion 92 and a second fastening nut 93. Among them, the top of the second limiting portion 92 is located in the second limiting groove 2001 and is limitedly matched with the second limiting groove 2001, the bottom end of the second limiting portion 92 passes through the second connecting hole and is located below the second adapter seat 91, and the second fastening nut 93 is threadedly matched with the bottom end of the second limiting portion 92. Such a configuration has a simple structure and is convenient for connecting the second adapter seat 91 with the driving end.

[0055] Specifically, both ends of the second limiting groove 2001 extend to the peripheral surface of the driving end respectively, the cross-sectional shape of the second limiting groove 2001 is T-shaped, and the second limiting portion 92 is limitedly matched with the second limiting groove 2001 .

[0056] Furthermore, a second mounting groove is provided on the bottom end surface of the second adapter 91, and the top end of the second mold 40 is inserted into the second mounting groove. A second threaded hole is provided on the circumferential surface of one end of the second mold 40 inserted into the second mounting groove. The stamping device also includes a second fastener 94, and the second fastener 94 includes a second fastening bolt, which passes through the second adapter 91 and extends into the second mounting groove and is threadedly engaged with the second threaded hole. Such a configuration can improve the stability of the connection between the second adapter 91 and the second mold 40.

[0057] In this embodiment, a plurality of second fastening bolts are provided, and the plurality of second fastening bolts are spaced and distributed along the circumference of the second adapter seat 91. Such a configuration can further improve the stability of the connection between the second mold 40 and the second adapter seat 91.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0060] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0063] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A punching device, characterized in that: include: Frame (10); A driving unit (20) is arranged on the frame (10); A first die (30) is provided with a stamping groove (301) at the top, at least one end of the stamping groove (301) is open, and the top of the first die (30) is used to place a workpiece to be stamped; The second mold (40) is located above the first mold (30), and a stamping protrusion is provided at the bottom of the second mold (40), and the shape of the stamping protrusion is adapted to the shape of the stamping groove (301), and the driving part (20) is drivingly connected to the second mold (40) so that the stamping protrusion and the stamping groove (301) are engaged or separated; A stopper (50) is arranged on one side of the opening of the punching groove (301), and the stopper (50) is used to stop and cooperate with the end of the workpiece to be punched.

2. The punching device according to claim 1, characterized in that: The punching device also includes: An extension plate (60) is arranged on the frame (10), the extension plate (60) is located on a side of the first mold (30) having an opening, the extension direction of the extension plate (60) is the same as the extension direction of the stamping groove (301), the stopper (50) is movably arranged on the extension plate (60), and the distance between the stopper (50) and the first mold (30) is adjustable.

3. The punching device according to claim 2, characterized in that: The extension plate (60) is provided with a slide groove (601), the extension direction of the slide groove (601) is the same as the extension direction of the extension plate (60), the extension plate (60) is movably arranged in the slide groove (601), and the punching device further comprises: A locking member (70), wherein the stop member (50) and the extension plate (60) are fixedly connected via the locking member (70).

4. The punching device according to claim 3, characterized in that: The slide groove (601) is arranged along the thickness direction of the extension plate (60) and penetrates the extension plate (60), and the stopper (50) comprises: A stopper (51), comprising a stopper plate (511) and a protrusion (512) connected to each other, wherein the protrusion (512) is movably arranged in the slide groove (601), and the stopper plate (511) is located above the extension plate (60) and abuts against the top surface of the extension plate (60); A clamping portion (52) is located below the extension plate (60), the clamping portion (52) is clamped with the protrusion (512), and the clamping portion (52) abuts against the bottom surface of the extension plate (60); The locking member (70) passes through the stop plate (511) and abuts against the top surface of the extension plate (60), the locking member (70) is threadedly matched with the stop plate (511), and the locking member (70) is matched with the clamping portion (52) to fix the stop portion (51).

5. The punching device according to claim 1, characterized in that: The punching device also includes: The first transfer seat (81) is detachably arranged on the frame (10), and the first mold (30) is detachably arranged on the first transfer seat (81).

6. The punching device according to claim 5, characterized in that: The frame (10) comprises a bearing plate (11), a top surface of the bearing plate (11) is provided with a first limiting groove (1101), a cross-sectional area of ​​a bottom end of the first limiting groove (1101) is larger than a cross-sectional area of ​​a top end of the first limiting groove (1101), the first adapter seat (81) is located above the bearing plate (11), and a first connecting hole is provided on the first adapter seat (81); the stamping device further comprises: A first limiting portion (82), wherein the bottom end of the first limiting portion (82) is disposed in the first limiting groove (1101) and is limitedly matched with the first limiting groove (1101), and the top end of the first limiting portion (82) passes through the first connecting hole and is located above the first adapter seat (81); The first fastening nut (83) is threadably matched with the top end of the first limiting portion (82).

7. The punching device according to claim 5, characterized in that: The punching device also includes: A first fastener (84) is arranged between the first adapter seat (81) and the first mold (30), and the first adapter seat (81) and the first mold (30) are detachably connected via the first fastener (84).

8. The punching device according to claim 1, characterized in that: The punching device also includes: The second transfer seat (91) is detachably arranged on the driving part (20), and the second mold (40) is detachably arranged on the second transfer seat (91).

9. The punching device according to claim 8, characterized in that: The driving part (20) comprises a driving end, the driving end is located above the first mold (30), the driving end is close to or far away from the first mold (30), a second limiting groove (2001) is provided on a side of the driving end close to the first mold (30), the cross-sectional area of ​​the top end of the second limiting groove (2001) is larger than the cross-sectional area of ​​the bottom end of the second limiting groove (2001), the second adapter seat (91) is located below the driving end, and a second connecting hole is provided on the second adapter seat (91); the stamping device further comprises: A second limiting portion (92), wherein the top end of the second limiting portion (92) is located in the second limiting groove (2001) and is limitedly matched with the second limiting groove (2001), and the bottom end of the second limiting portion (92) passes through the second connecting hole and is located below the second adapter seat (91); The second fastening nut (93) is threadably matched with the bottom end of the second limiting portion (92).

10. The punching device according to claim 8, characterized in that: The punching device also includes: The second fastener (94) is arranged between the second adapter seat (91) and the second mold (40), and the second adapter seat (91) and the second mold (40) are detachably connected via the second fastener (94).

11. The punching device according to claim 1, characterized in that: The groove wall of the punching groove (301) is provided with a receiving groove (3011), and the receiving groove (3011) is communicated with the punching groove (301).

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