Punching mechanism

Abstract

The utility model discloses a punching mechanism. The punching mechanism comprises a base; the guide assembly is fixedly arranged on the base; the driving assembly comprises a stator and a rotor, the stator is arranged on the base, the stator and the guide assembly are arranged at an interval, the rotor is slidably connected to the guide assembly, one end of the rotor is opposite to the stator, and the stator generates a magnetic field to drive the rotor to reciprocate in the extending direction of the guide assembly when powered on; and the punch assembly is connected to the rotor and is used for punching the workpiece under the driving of the rotor. According to the punching mechanism, the stator is powered on to generate the magnetic field so as to drive the rotor to reciprocate in the extending direction of the guide assembly, so that the rotor drives the punch assembly to punch a workpiece, the response speed of the punching mechanism is increased, and then the punching efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece punching, and in particular to a punching mechanism. Background Art

[0002] In the process of workpiece production, it is usually necessary to perform a punching operation on the workpiece. During the punching process, the punch of the punching device moves back and forth to punch the workpiece. Since the current punch has a low acceleration when punching, the punching efficiency is low. Utility Model Content

[0003] In view of the above, it is necessary to propose a punching mechanism that can improve the punching efficiency of the workpiece while achieving a fast response speed.

[0004] An embodiment of the present application provides a punching mechanism, which includes a base; a guide assembly fixed to the base; a driving assembly, including a stator and a mover, the stator being arranged on the base and spaced apart from the guide assembly, the mover being slidably connected to the guide assembly and one end of the mover being arranged opposite to the stator, the stator generating a magnetic field when energized to drive the mover to reciprocate along the extension direction of the guide assembly; a punch assembly connected to the mover, for punching a workpiece driven by the mover.

[0005] During the use of the punching mechanism, the stator generates a magnetic field when energized, and the mover located in the magnetic field rises or falls along the guide assembly under the action of the magnetic force. When the mover descends, the mover carries the punch assembly to punch the workpiece, and when the punching is completed, the mover carries the punch assembly up to move away from the workpiece. Since the power of the punching mechanism is the conversion of electrical energy into the mechanical energy of the mover, no conversion mechanism is set between the drive assembly and the punch assembly, thereby improving the response speed of the punching mechanism and further improving the punching efficiency.

[0006] In some embodiments, the punch assembly includes a fixed seat connected to the mover and used for reciprocating movement under the drive of the mover; a rotating drive member connected to the fixed seat; and a punch connected to the rotating drive member, capable of rotating under the drive of the rotating drive member, and approaching the workpiece to punch the workpiece under the drive of the fixed seat, or moving away from the workpiece under the drive of the fixed seat.

[0007] In some embodiments, a seat body is connected to the mover; a fixing portion, one end of which is connected to the seat body, and a first through groove is provided on the side of the fixing portion facing the seat body, and the first through groove and the seat body are combined to form a mounting hole for connecting the rotating drive member; a locking portion is passed through the other end of the fixing portion and connected to the seat body, and the locking portion connects the fixing portion and the seat body so that the fixing portion and the seat body fix the rotating drive member.

[0008] In some embodiments, the guide assembly includes a plurality of guide rails arranged at intervals, the plurality of guide rails are connected to the base, and the mover is slidably connected to the base via the plurality of guide rails.

[0009] In some embodiments, the number of the stators is two, the base includes a frame, a slide groove is opened on one side of the frame, the extension direction of the slide groove is the same as the extension direction of the guide assembly, one end of the mover passes through the slide groove and extends into the frame; two cover plates are respectively connected to opposite sides of the frame and are located on both sides of the slide groove, and the two stators are respectively connected to opposite side surfaces of the two cover plates.

[0010] In some embodiments, the punching mechanism further includes two limit members, the two limit members are respectively connected to the two ends of the slide groove, and the two limit members are used to abut against the mover to limit the sliding range of the mover.

[0011] In some embodiments, the punching mechanism also includes an anti-drop assembly, which includes an anti-drop module connected to the base; a connecting piece, one end of the connecting piece is connected to the anti-drop module, and the other end of the connecting piece is slidably engaged with the mover, and the anti-drop module drives the punch assembly to descend to a preset position through the connecting piece, or drives the punch assembly to lift off the workpiece through the connecting piece.

[0012] In some embodiments, the anti-drop module includes a linear drive component, including a cylinder body and an output shaft, the cylinder body is connected to the base, the output shaft is slidably connected to the cylinder body, one end of the output shaft is connected to the other end of the connecting member, and the output shaft drives the punch assembly to drop to the preset position through the connecting member; an elastic member is sleeved on the output shaft, and the two ends of the elastic member are respectively abutted against the other end of the output shaft and the cylinder body, and the output shaft lifts the punch assembly away from the workpiece through the connecting member under the action of the elastic member.

[0013] In some embodiments, the punching mechanism further includes a spraying member, which is disposed on the base and adjacent to the punch assembly, and is used to spray a coolant on the workpiece to cool it down.

[0014] In some embodiments, the spray part includes a mounting seat connected to the base, the mounting seat is arranged on the peripheral side of the punch assembly, the mounting seat is provided with a connecting groove and a plurality of through holes connected to the connecting groove, and the plurality of through holes are arranged at intervals; a plurality of nozzles are respectively connected to the plurality of through holes, and the nozzles are used to spray coolant on the workpiece to cool it down. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the punching mechanism provided in the embodiment of the present application.

[0016] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the base, drive assembly, guide assembly and limit member in the punching mechanism is shown.

[0017] Figure 3 yes Figure 2 The three-dimensional structural diagram of the frame, guide assembly and limit member shown in FIG.

[0018] Figure 4 yes Figure 1 Schematic diagram of the exploded structure of the anti-drop assembly and the mover in the punching mechanism shown.

[0019] Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of the fixing seat in the punching mechanism is shown.

[0020] Figure 6 yes Figure 1 A schematic diagram of the exploded structure of the spray part in the punching mechanism is shown.

[0021] Main component symbols

[0022] Punching mechanism 100

[0023] Base 10

[0024] Frame 11

[0025] Cover 12

[0026] Chute 13

[0027] Drive assembly 20

[0028] Stator 21

[0029] Movers 22

[0030] First board 23

[0031] Second board 24

[0032] Magnetic plate 25

[0033] Connection hole 26

[0034] Punch assembly 30

[0035] Fixed seat 31

[0036] Rotating drive member 32

[0037] Punch 33

[0038] Base 34

[0039] Fixing portion 35

[0040] Locking portion 36

[0041] First through groove 37

[0042] Second through groove 38

[0043] Guide assembly 40

[0044] Guide Rail 41

[0045] Mounting holes 50

[0046] Limiter 60

[0047] Anti-drop assembly 70

[0048] Anti-drop module 71

[0049] Connector 72

[0050] Linear drive 73

[0051] Elastic member 74

[0052] Cylinder 75

[0053] Output shaft 76

[0054] Spraying parts 80

[0055] Mounting Block 81

[0056] Nozzle 82

[0057] Connecting groove 83

[0058] Through hole 84

[0059] Ring plate 85 DETAILED DESCRIPTION

[0060] The embodiments of the present application 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 application, and cannot be understood as limiting the present application.

[0061] In the description of the present application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 application. In addition, in the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" 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, an electrical connection, or mutual communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0064] See also Figure 1 The embodiment of the present application provides a punching mechanism 100. The punching mechanism 100 is used to punch holes in a workpiece, and the workpiece may be a shell structure such as a mobile phone shell, a computer shell, etc.

[0065] For ease of understanding, Figure 1 A three-dimensional coordinate system is established for auxiliary explanation. The directions of the X-axis, Y-axis and Z-axis are shown in the figure, and the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0066] See also Figure 1 and Figure 2, the punching mechanism 100 includes a base 10, a driving assembly 20, a punch assembly 30 and a guide assembly 40. The driving assembly 20 and the guide assembly 40 are arranged on the base 10, and the base 10 supports the driving assembly 20 and the guide assembly 40. The punch assembly 30 is connected to the driving assembly 20, and is used to punch holes under the drive of the driving assembly 20. Specifically, the driving assembly 20 includes a stator 21 and a mover 22, the stator 21 is arranged on the base 10 and is spaced from the guide assembly 40, the mover 22 is slidably connected to the guide assembly 40, the mover 22 is slidably connected to the base 10 through the guide assembly 40, and one end of the mover 22 is arranged opposite to the stator 21. In this embodiment, the stator 21 can be a coil winding, when the stator 21 is energized, the stator 21 generates a magnetic field, when the stator 21 generates a magnetic field, the mover 22 located in the magnetic field slides up and down along the guide assembly 40 in the Z-axis direction under the action of the magnetic force, and at the same time drives the punch assembly 30 to move.

[0067] During the application of the punching mechanism 100, the stator 21 is first energized to generate a magnetic field. At this time, the mover 22 slides along the guide assembly 40 under the magnetic force of the magnetic field. It can be understood that when the direction of the current in the stator 21 changes, the direction of the magnetic force on the mover 22 will also change. At this time, the moving direction of the mover 22 changes from rising to falling or from falling to rising. When the mover 22 descends, the mover 22 carries the punch assembly 30 to complete the punching of the workpiece. When the mover 22 rises, the mover 22 carries the punch assembly 30 away from the workpiece to prepare for the next punching. In this way, since the power of the punching mechanism 100 is the mechanical energy directly converted from electrical energy to linear motion through a magnetic field, there is no need to set a conversion mechanism between the drive assembly 20 and the punch assembly 30 to transmit power. When the drive assembly 20 is started, the punch assembly 30 can respond quickly, so that the mover 22 of the drive assembly 20 carries the punch assembly 30 to punch quickly, thereby improving the punching efficiency. In addition, the guide assembly 40 guides the mover 22 to improve the sliding accuracy of the mover 22 .

[0068] See also Figure 2 and Figure 3 The base 10 includes a frame 11 and two cover plates 12. The frame 11 is a rectangular frame, and a slide groove 13 is provided on one side of the frame 11. Specifically, the slide groove 13 is provided on one of the long sides of the frame 11. The extension direction of the slide groove 13 is the same as the extension direction of the guide assembly 40. One end of the mover 22 passes through the slide groove 13 and extends into the frame 11.

[0069] The two cover plates 12 are plate-shaped, and the two cover plates 12 are respectively connected to the two sides of the frame 11. There are two stators 21, and the two stators 21 are respectively connected to the opposite sides of the two cover plates 12, and the two stators 21 are located in the frame 11, and the two stators 21 are respectively located on both sides of one end of the mover 22 extending into the frame 11. In this way, since two stators 21 are provided in the punching mechanism 100, compared with one stator 21, the two stators 21 can generate a stronger magnetic field, thereby generating a greater magnetic force on the mover 22, so that the mover 22 can generate a greater acceleration, thereby improving the response speed of the mover 22.

[0070] See also Figure 2 and Figure 4 In this embodiment, the mover 22 includes a first plate 23, a second plate 24 and a magnetic plate 25. The first plate 23 and the second plate 24 are connected in a T shape, the first plate 23 is located on the outside of the frame 11, and the punch assembly 30 is connected to the first plate 23. The second plate 24 extends into the frame 11 through the slide slot 13. There are two magnetic plates 25, and the two magnetic plates 25 are respectively located on both sides of the second plate 24, and the two magnetic plates 25 are respectively arranged opposite to the two stators 21. When the stator 21 is energized to generate a magnetic field, the magnetic plate 25 is affected by the magnetic force and can slide up and down along the Z-axis direction, and the magnetic plate 25 slides with the first plate 23 and the second plate 24. Since the mover 22 is composed of the first plate 23, the second plate 24 and the magnetic plate 25, the structure of the mover 22 is simple, which is conducive to reducing the weight of the mover 22, thereby improving the response speed of the mover 22.

[0071] See also Figure 1 , Figure 4 and Figure 5 The punch assembly 30 includes a fixed seat 31, a rotating drive member 32 and a punch 33. The fixed seat 31 is connected to the first plate 23 of the mover 22, and the fixed seat 31 slides back and forth driven by the mover 22. The rotating drive member 32 can be a motor, and the rotating drive member 32 is connected to the fixed seat 31, and the punch 33 is connected to the rotating drive member 32. When the punch assembly 30 punches the workpiece, the rotating drive member 32 drives the punch 33 to rotate, and at the same time, the mover 22 drives the punch 33 to move toward the workpiece through the fixed seat 31, so that the punch 33 punches the workpiece. When the punching is completed, the mover 22 drives the punch 33 away from the workpiece through the fixed seat 31.

[0072] Specifically, the fixed seat 31 includes a seat body 34, a fixing portion 35 and a locking portion 36. The seat body 34 is connected to the first plate 23 of the mover 22. One end of the fixing portion 35 is connected to the seat body 34, and a first through slot 37 is provided on the side of the fixing portion 35 facing the seat body 34. A second through slot 38 is provided on the seat body 34, and the first through slot 37 is arranged opposite to the second through slot 38. The first through slot 37 of the fixing portion 35 and the second through slot 38 of the seat body 34 are enclosed to form a mounting hole 50 for connecting the rotating drive member 32, that is, the rotating drive member 32 is inserted into the mounting hole 50. The locking portion 36 can be a bolt, and the locking portion 36 is penetrated at the other end of the fixing portion 35 and connected to the seat body 34. The locking portion 36 is used to connect the fixing portion 35 and the seat body 34, so that the fixing portion 35 and the seat body 34 fix the rotating drive member 32. In this way, by setting the fixed seat 31 as a detachable structure, it is convenient for operators to install and disassemble the rotating drive member 32 during maintenance. In other embodiments, the second through slot 38 may not be provided on the seat body 34 , that is, the side of the seat body 34 facing the fixing portion 35 is provided as a flat surface.

[0073] See also Figure 2 , Figure 3 and Figure 4 The guide assembly 40 includes a plurality of guide rails 41, which are arranged at intervals and extend along the Z-axis direction. For example, the number of guide rails 41 is three, of which two guide rails 41 are arranged at intervals and are located outside the frame 11 of the base 10, and the two guide rails 41 are slidably connected to the first plate 23 of the mover 22, and the mover 22 is slidably connected to the frame 11 of the base 10 through the two guide rails 41. The third guide rail 41 is arranged inside the frame 11 and is slidably connected to the second plate 24. The three guide rails 41 guide the mover 22 to improve the sliding accuracy of the mover 22.

[0074] See also Figure 2 and Figure 3 The punching mechanism 100 further includes two limit members 60, which are respectively located at the two ends of the slide slot 13. In this embodiment, the limit member 60 is L-shaped, and one end of the limit member 60 extends into the slide slot 13. The two limit members 60 are used to abut against the first plate 23 of the mover 22 to limit the sliding range of the mover 22. The limit member 60 can be made of PU, and when the mover 22 abuts against the limit member 60, the limit member 60 can play a buffering role, thereby avoiding a large impact vibration.

[0075] See also Figure 1 and Figure 4The punching mechanism 100 also includes an anti-drop assembly 70, and the anti-drop assembly 70 includes an anti-drop module 71 and a connector 72. The anti-drop module 71 is connected to the frame 11 of the base 10 and is located above the mover 22. One end of the connector 72 is connected to the anti-drop module 71, and the other end of the connector 72 is slidably engaged with the mover 22. Specifically, a connecting hole 26 is provided on the first plate 23 of the mover 22, and the connector 72 is a stepped shaft with a large diameter at both ends and a small diameter in the middle. The middle part of the connector 72 is slidably connected to the connecting hole 26, and the two ends of the connector 72 prevent the connector 72 from detaching from the connecting hole 26. Before punching, the anti-drop assembly 70 drives the punch assembly 30 to descend to a preset position through the connector 72, and the preset position here refers to the starting position of the punch assembly 30 before punching. When punching begins, the mover 22 drives the punch assembly 30 to descend, and relative sliding occurs between the mover 22 and the connecting member 72, that is, the mover 22 descends along the connecting member 72, and when the mover 22 brings the punch assembly 30 into contact with the workpiece, the punch assembly 30 punches the workpiece. For example, when a power outage or emergency shutdown occurs, the anti-drop assembly 70 drives the connecting member 72 to rise, and the connecting member 72 abuts against the mover 22 during the rising process, and the mover 22 brings the punch assembly 30 up, thereby lifting the punch assembly 30 away from the workpiece to prevent the punch 33 from falling and colliding with the workpiece.

[0076] Specifically, the anti-drop module 71 includes a linear drive member 73 and an elastic member 74. The linear drive member 73 can be a cylinder, and the linear drive member 73 includes a cylinder body 75 and an output shaft 76. The output shaft 76 is slidably connected to the cylinder body 75, and both ends of the output shaft 76 protrude from the cylinder body 75 respectively. One end of the output shaft 76 is connected to the connecting member 72, and the other end of the output shaft 76 is connected to an air source (not shown). The air source vents into the cylinder body 75 to push the output shaft 76 down. When the output shaft 76 is down, the output shaft 76 brings the punch assembly 30 down to a preset position through the connecting member 72.

[0077] The elastic member 74 may be a spring, and the elastic member 74 is sleeved on the output shaft 76. The two ends of the elastic member 74 are respectively in contact with the other end of the output shaft 76 and the cylinder body 75. When the output shaft 76 descends, the output shaft 76 compresses the elastic member 74. When a power failure or emergency shutdown occurs, the air source stops ventilating the cylinder body 75. At this time, the elastic member 74 resets and pushes up the output shaft 76. The output shaft 76 drives the punch assembly 30 on the mover 22 to rise through the connecting member 72, thereby lifting the punch assembly 30 away from the workpiece to prevent the punch 33 from falling and colliding with the workpiece.

[0078] See also Figure 1 and Figure 6The punching mechanism 100 further includes a spraying member 80, which is disposed on the base 10 and adjacent to the punch assembly 30. When the spraying member 80 sprays coolant onto the workpiece, the punch 33 can be cooled and lubricated. The coolant can be water. Specifically, the spraying member 80 includes a mounting seat 81 and a plurality of spray heads 82. The mounting seat 81 is connected to the base 10, and the mounting seat 81 is annular. The mounting seat 81 is disposed on the peripheral side of the punch assembly 30. The mounting seat 81 is provided with an annular connecting groove 83 and a plurality of through holes 84 connected to the connecting groove 83, and the plurality of through holes 84 are arranged at intervals. It can be understood that the spraying member 80 further includes an annular plate 85, and the annular plate 85 is used to cover the connecting groove 83. In this embodiment, there are four through holes 84, which are evenly distributed on the mounting base 81, and there are four nozzles 82, which are respectively connected to the four through holes 84. When the coolant enters the connecting groove 83, it enters the corresponding nozzles 82 from the four through holes 84, and the nozzles 82 spray the coolant on the workpiece. In this way, by providing multiple nozzles 82, the coolant can fully contact the workpiece, so that the cooling effect and lubrication effect are better.

[0079] The working process of the punching mechanism 100 provided in the embodiment of the present application is roughly as follows:

[0080] The output shaft 76 of the linear drive member 73 lowers to a preset position with the connecting member 72. The two stators 21 are energized to generate a magnetic field. At this time, the magnetic plate 25 located in the magnetic field is affected by the magnetic field, and the magnetic field generates a magnetic force on the magnetic plate 25, which enables the magnetic plate 25 to slide in the Z-axis direction. For example, the magnetic plate 25 lowers with the first plate 23 and the second plate 24. During the lowering process of the first plate 23, the first plate 23 brings the punch assembly 30 close to the workpiece. At the same time, the rotary drive member 32 drives the punch 33 to rotate. When the punch 33 contacts the workpiece, the punch 33 punches a hole in the workpiece. After the punching is completed, the current direction is changed so that when the magnetic plate 25 raises with the first plate 23 and the second plate 24, the first plate 23 raises with the punch assembly 30 to move away from the workpiece to prepare for the next punching.

[0081] When power failure or shutdown occurs, the air source stops ventilating the cylinder 75, the elastic member 74 begins to reset and pushes the output shaft 76 to rise. At this time, the output shaft 76 drives the mover 22 to rise through the connecting member 72, and the mover 22 drives the punch assembly 30 away from the workpiece to prevent the punch 33 from falling and colliding with the workpiece.

[0082] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A punching mechanism, characterized in that: include: Pedestal; A guide assembly, fixedly mounted on the base; A driving assembly, comprising a stator and a mover, wherein the stator is arranged on the base and spaced apart from the guide assembly, the mover is slidably connected to the guide assembly and one end of the mover is arranged opposite to the stator, and the stator generates a magnetic field when energized to drive the mover to reciprocate along the extension direction of the guide assembly; The punch assembly is connected to the mover and is used for punching the workpiece under the drive of the mover.

2. The punching mechanism according to claim 1, characterized in that: The punch assembly comprises: A fixed seat, connected to the mover, and used for reciprocating movement driven by the mover; A rotating driving member connected to the fixing seat; The punch is connected to the rotating drive member, can rotate under the drive of the rotating drive member, and is driven by the fixing seat to approach the workpiece to punch the workpiece, or is driven by the fixing seat to move away from the workpiece.

3. The punching mechanism according to claim 2, characterized in that: The fixing seat comprises: A seat body connected to the mover; A fixing part, one end of which is connected to the base body, a first through slot is provided on a side of the fixing part facing the base body, and the first through slot and the base body together form a mounting hole for connecting the rotating driving member; The locking part is passed through the other end of the fixing part and connected to the seat body. The locking part connects the fixing part and the seat body so that the fixing part and the seat body fix the rotating driving member.

4. The punching mechanism according to claim 1, characterized in that: The guide assembly includes a plurality of guide rails arranged at intervals, the plurality of guide rails are connected to the base, and the mover is slidably connected to the base via the plurality of guide rails.

5. The punching mechanism according to claim 1, characterized in that: The number of the stators is two, and the base comprises: A frame, wherein a slide groove is provided on one side of the frame, the extension direction of the slide groove is the same as the extension direction of the guide assembly, and one end of the mover passes through the slide groove and extends into the frame; The two cover plates are respectively connected to the two opposite sides of the frame body and are located on the two sides of the slide slot. The two stators are respectively connected to the two opposite side surfaces of the two cover plates.

6. The punching mechanism according to claim 5, characterized in that: The punching mechanism further includes two limiting members, which are respectively connected to the two ends of the slide slot, and are used to abut against the mover to limit the sliding range of the mover.

7. The punching mechanism according to claim 1, characterized in that: The punching mechanism further includes an anti-drop component, which includes: An anti-drop module connected to the base; A connecting piece, one end of which is connected to the anti-drop module, and the other end of which is slidably engaged with the mover, and the anti-drop module drives the punch assembly to descend to a preset position through the connecting piece, or drives the punch assembly to lift off the workpiece through the connecting piece.

8. The punching mechanism according to claim 7, characterized in that: The anti-drop module comprises: A linear drive member, comprising a cylinder body and an output shaft, wherein the cylinder body is connected to the base, the output shaft is slidably connected to the cylinder body, one end of the output shaft is connected to the other end of the connecting member, and the output shaft drives the punch assembly to descend to the preset position through the connecting member; An elastic member is sleeved on the output shaft, and two ends of the elastic member are respectively in contact with the other end of the output shaft and the cylinder body. Under the action of the elastic member, the output shaft is lifted away from the workpiece with the punch assembly through the connecting member.

9. The punching mechanism according to claim 1, characterized in that: The punching mechanism further comprises a spraying member, which is arranged on the base and adjacent to the punch assembly, and is used for spraying cooling liquid on the workpiece to reduce the temperature.

10. The punching mechanism according to claim 9, characterized in that: The spraying part comprises: A mounting seat connected to the base, the mounting seat and the peripheral side of the punch assembly, the mounting seat is provided with a connecting groove and a plurality of through holes connected to the connecting groove, and the plurality of through holes are arranged at intervals; A plurality of nozzles are respectively connected to the plurality of through holes, and the nozzles are used for spraying cooling liquid on the workpiece to reduce the temperature.

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