Film perforating machine

Abstract

The invention discloses a film punching machine, belongs to the field of film production, and aims to solve the problems that the winding and unwinding work between a discharging roller and a winding roller needs to be suspended during punching each time, then punching operation is carried out, the winding and unwinding work needs to be frequently interrupted during punching, and the continuity and speed of production work are affected. According to the technical scheme, the punching machine is characterized in that the punching machine comprises a machine body, a discharging roller, a collecting roller and a punching device, the punching device comprises a driving part, a punching tool and an abutting part, a workbench is located below the punching tool, the driving part is connected with the punching tool, a connecting part is arranged at the connecting position, and the abutting part is also connected with the connecting part. Differential compensation of the unwinding side and the winding side in positioning punching is achieved by arranging the film adjusting piece, unpowered compensation is achieved through timing sequence cooperation of the energy storage stirring assembly and the rotating rod from normal conveying of a film, it is guaranteed that transition is stable when a punching tool completes punching and lifts, and the punching efficiency is improved. Therefore, the continuity and the speed of production work are ensured.

Description

Technical Field

[0001] The present invention relates to the field of thin film production, and more specifically, it relates to a thin film punching machine. Background Art

[0002] In the plastic thin film production process, in order to meet the requirements of air permeability, drainage or other specific needs, a thin film punching machine is generally used to punch holes of different shapes and specifications on the thin film. The thin film punching machine is divided into a laser thin film punching machine and a mechanical thin film punching machine. The laser thin film punching machine has the characteristics of fast punching speed, high precision and diverse hole shapes. However, the equipment cost of the laser thin film punching machine is relatively high. Therefore, in the case of materials such as plastic bags and paper products used in daily life, a mechanical thin film punching machine is generally used for punching.

[0003] The existing mechanical thin film punching machine generally fixes the thin film on the feeding roller first, then pulls one end of the thin film through the punching area and connects it to the winding roller, and then performs the punching operation during the winding process. During the punching process, in order to ensure the punching quality, the feeding and winding work between the feeding roller and the winding roller needs to be paused each time before punching, and then the punching operation is carried out. This results in frequent interruption of the feeding and winding work during punching, affecting the continuity and speed of the production work.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a thin film punching machine to solve the above problems.

[0006] The present invention realizes the above purpose through the following technical solutions: A thin film punching machine, comprising a machine body, a feeding roller, a winding roller and a punching device, characterized in that: the punching device includes: A driving part, fixedly arranged on the machine body; A punching tool for punching holes in the thin film. A workbench is arranged below the punching tool. The driving part is connected to the punching tool, and a connecting part is arranged at the connection; A pressing part for pressing the thin film against the workbench, and the pressing part is connected to the connecting part; A thin film adjusting part for adjusting the conveyable length of the thin film on both sides of the workbench. The thin film adjusting part is rotatably arranged on the machine body. The two ends of the thin film adjusting part respectively extend to both sides of the workbench. A thin film guiding part one is arranged at one end of the thin film adjusting part close to the feeding roller, and a thin film guiding part two is arranged at one end of the thin film adjusting part close to the winding roller; A transmission mechanism for driving the thin film adjusting part to rotate. The two ends of the transmission mechanism are respectively in transmission connection with the connecting part and the thin film adjusting part; During the punching process, the connecting part drives the film adjusting part to rotate through the transmission mechanism, so that the first film guide part rotates away from the unwinding roller, and the second film guide part rotates toward the receiving roller.

[0007] The present invention is further configured as follows: the transmission mechanism comprises: A rack is slidably arranged on the fuselage, an embedding rod is fixedly arranged on the connecting portion, and the embedding rod is embedded in the rack; The coaxial gear pair is rotatably arranged on the machine body. The coaxial gear pair is arranged as two gears with different diameters, and the two gears are coaxially fixedly arranged, wherein the gear with a smaller diameter is meshed with the rack, and the gear with a larger diameter is transmission-connected with the film adjustment member.

[0008] The present invention is further configured as follows: the film adjusting member comprises: A gear turntable is rotatably disposed on the machine body, and the gear turntable is meshed with the coaxial gear pair; The rotating rod is arranged on the gear rotating disk, and the first and second film guide parts are respectively fixedly connected at the head and tail ends of the rotating rod.

[0009] The present invention is further configured as follows: a limit shell is fixedly arranged on the gear turntable, two openings are provided on the limit shell, and the first and second ends of the rotating rod extend to the outside of the limit shell, the rotating rod is rotatably arranged on the gear turntable, and an energy storage toggle assembly for toggling the rotating rod is rotatably arranged on the fuselage; When the gear turntable rotates, the rotating rod rotates accordingly and pushes the energy storage toggle assembly to rotate. The energy storage toggle assembly is in an energy storage state. When the connecting part moves to the lowest point and starts to lift upward, the energy storage toggle assembly releases the stored energy to push the rotating rod to continue rotating in the original direction, which is opposite to the rotation of the gear turntable at this time.

[0010] The present invention is further configured as follows: the energy storage toggle assembly comprises: A rotating member, rotatably disposed on the fuselage, wherein the rotating member is provided with an extension arm for abutting against the rotating rod; A wave ring is fixedly arranged on the rotating shaft of the rotating member, and the outer side wall of the wave ring is arranged as a wave structure to form a plurality of wave crests and wave troughs distributed at intervals; The fitting piece is slidably arranged on the fuselage, and an elastic element 1 is arranged between the fitting piece and the fuselage for pushing the fitting piece to fit the outer wall of the wave ring.

[0011] The present invention is further configured as follows: extension parts are slidably provided at the connection points between the two ends of the rotating rod and the film guide part 1 and the film guide part 2, so as to increase the overall length of the rotating rod.

[0012] The present invention is further configured as follows: the abutment member is slidably arranged on the connection portion, and a second elastic element is abuttedly arranged between the abutment member and the connection portion for pushing the abutment member to fit the film.

[0013] The present invention is further configured as follows: guide roller groups are arranged on both sides of the workbench close to the unwinding roller and the receiving roller, for guiding the film to be smoothly transferred to the workbench.

[0014] The present invention is further configured as follows: the first film guide part and the second film guide part each include two rotating rollers and a connecting frame, the two rotating rollers are rotatably arranged on the connecting frame, and the connecting frame is connected to the rotating rod.

[0015] The present invention is further configured as follows: a through groove for embedding the embedding rod is provided on the rack, and the embedding rod can slide along the through groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting up film adjustment parts, the difference compensation in positioning and punching between the unwinding side and the winding side is achieved, and the normal transportation of the film is realized. At the same time, the timing coordination of the energy storage toggle assembly and the rotating rod is used to realize unpowered compensation, ensuring the stable transition when the punching tool is lifted after punching, thereby ensuring the continuity and speed of production work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the connection structure between the driving part and the punching device; Figure 3 Schematic diagram of the punching device Figure 1 ; Figure 4 Schematic diagram of the punching device Figure 2 ; Figure 5 It is a schematic diagram of the structure of the driving unit.

[0018] Figure numerals: 1. driving part; 2. punching tool; 3. workbench; 4. connecting part; 5. abutment member; 6. film adjustment member; 7. film guide part 1; 8. film guide part 2; 9. rack; 10. coaxial gear pair; 11. gear turntable; 12. rotating rod; 13. limiting shell; 14. wave ring; 15. fitting member; 16. elastic element 1; 17. extension part; 18. rotating member. DETAILED DESCRIPTION

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be construed as a limitation of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Embodiment

[0020] A film punching machine, as Figures 1-5 shown, includes a machine body, a feeding roller, a receiving roller, and a punching device. The punching device includes a driving part 1 fixedly arranged on the machine body, a punching tool 2 for punching holes in the film, and an abutting member 5 for abutting the film against the workbench 3. The driving part 1 is driven by a cylinder or a linear motor (which is prior art and will not be elaborated here). The workbench 3 is located below the punching tool 2. The driving part 1 is connected to the punching tool 2, and a connecting part 4 is provided at the connection, so that the driving part 1 drives the punching tool 2 to move downward through the connecting part 4. The abutting member 5 is also connected to the connecting part 4, so that the abutting member 5 moves downward synchronously, and the abutting member 5 abuts against the film before the punching tool 2, forming a fixation of the film position, thereby ensuring the accuracy of the punching by the punching tool 2.

[0021] As Figure 5 shown, the abutting member 5 is slidably arranged on the connecting part 4, and an elastic element II is provided between the abutting member 5 and the connecting part 4 for pushing the abutting member 5 to fit the film, so as to ensure the stable fit between the abutting member 5 and the film through the elastic element II.

[0022] At the same time, as Figures 1-4 shown, the punching device further includes a film adjusting member 6 for adjusting the conveyable length of the film on both sides of the workbench 3 and a transmission mechanism for driving the film adjusting member 6 to rotate. The film adjusting member 6 is rotatably arranged on the machine body. The two ends of the film adjusting member 6 respectively extend to both sides of the workbench 3. A film guiding part I 7 is provided at one end of the film adjusting member 6 close to the feeding roller of the workbench 3, and a film guiding part II 8 is provided at one end of the film adjusting member 6 close to the receiving roller of the workbench 3. The film needs to start from the feeding roller, pass through the film guiding part I 7 and then reach the workbench 3, and then pass through the film guiding part II 8 to the receiving roller.

[0023] The two ends of the transmission mechanism are respectively in driving connection with the connecting part 4 and the film adjusting part 6. When the connecting part 4 moves downward for punching, the transmission mechanism drives the film adjusting part 6 to rotate, so that the first film guiding part 7 rotates away from the unwinding roller, and the second film guiding part 8 rotates towards the winding roller.

[0024] When the first film guiding part 7 rotates away from the unwinding roller, an increment of ΔL = Kθ will be generated in the film path length L1 between it and the unwinding roller and the table 3 spacing L2 (where K is the length coefficient from the first film guiding part 7 to the film adjusting part 6, and θ is the rotation angle). Thus, it can be known that the distances between the first film guiding part 7 and the unwinding roller and the table 3 will both increase, so that more films can be accommodated. When the abutting part 5 fixes the film for punching, the unwinding roller can still continuously feed the film, and the fed film is received through the increased distance, ensuring the stable conveyance of the film.

[0025] When the second film guiding part 8 rotates towards the winding roller, the distances between the second film guiding part 8 and the winding roller and the table 3 are both reduced, so that more films can be released. When the abutting part 5 fixes the film for punching, the winding roller can still continuously feed the film, and the received film is provided through the reduced distance, ensuring the stable winding of the film.

[0026] As Figures 2-4 shown, the transmission mechanism includes a rack 9 slidably arranged on the machine body and a coaxial gear pair 10 rotatably arranged on the machine body. An embedding rod is fixedly arranged on the connecting part 4, and the embedding rod is embedded in the rack 9. The connecting part 4 drives the rack 9 to move through the embedding rod, and the rack 9 provides power for the film adjusting part 6 through the coaxial gear pair 10, so that the positions of the first film guiding part 7 and the second film guiding part 8 change accordingly.

[0027] And the coaxial gear pair 10 is set to two gears with different diameters, and the two gears are coaxially and fixedly arranged. The gear with the smaller diameter meshes with the rack 9, and the gear with the larger diameter is in driving connection with the film adjusting part 6. A transmission ratio is formed through different diameters, so as to ensure the normal rotation of the film adjusting part 6 at an angle.

[0028] As Figures 2-4 shown, the film adjusting part 6 includes a gear turntable 11 rotatably arranged on the machine body and a rotating rod 12 arranged on the gear turntable 11. The gear turntable 11 meshes with the coaxial gear pair 10. Thus, the coaxial gear pair 10 drives the rotating rod 12 to displace through the gear turntable 11, and the two ends of the rotating rod 12 are respectively fixedly connected with the first film guiding part 7 and the second film guiding part 8, realizing the adjustment of the conveyable length of the films on both sides of the table 3.

[0029] At the same time, as Figure 2As shown, a limit shell 13 is fixedly arranged on the gear turntable 11, and two openings are provided on the limit shell 13, for the rotating rod 12 to extend to the outside of the limit shell 13 at both ends, and the rotating rod 12 is rotatably arranged on the gear turntable 11, so that when the gear turntable 11 rotates, the rotating rod 12 is pushed to rotate together through the limit shell 13.

[0030] At the same time Figures 2-4 As shown, an energy storage toggle assembly for toggling the rotating rod 12 is rotatably provided on the fuselage. When the gear turntable 11 rotates, the rotating rod 12 rotates accordingly and pushes the energy storage toggle assembly to rotate. The energy storage toggle assembly is in an energy storage state. When the connecting part 4 moves to the lowest point and starts to lift upward, the energy storage toggle assembly releases the stored energy to push the rotating rod 12 to continue rotating in the original direction of rotation, which is opposite to the rotation of the gear turntable 11 at this time. Therefore, the corresponding connecting part 4 drives the punching tool 2 to move upward and separate from the film, while the abutment 5 has not yet separated from the film, thereby ensuring the normal movement of the film guide part 1 7 and the film guide part 2 8.

[0031] like Figure 4 As shown, the energy storage toggle assembly includes a rotating part 18 rotatably arranged on the fuselage, a wave ring 14 fixedly arranged on the rotating shaft of the rotating part 18, and a fitting part 15 slidably arranged on the fuselage. The rotating part 18 is provided with an extension arm for abutting the rotating rod 12, so that the rotating rod 12 pushes the abutting extension arm to push the rotating part 18 to rotate. The outer wall of the wave ring 14 is arranged as a wave structure to form a plurality of spaced peaks and trough structures. An elastic element 16 is arranged between the fitting part 15 and the fuselage for pushing the fitting part 15 to fit the outer wall of the wave ring 14, so that when the fitting part 15 fits the peaks and troughs of the wave ring 14, different degrees of compression will be formed on the elastic element 16.

[0032] like Figure 2 As shown, extension parts 17 are slidably provided at the connection points between the two ends of the rotating rod 12 and the film guide part 1 7 and the film guide part 2 8, which are used to increase the overall length of the rotating rod 12, so that the user can adjust the conveyable length of the film on both sides of the workbench 3 according to the spacing of the film punching, wherein the extension part 17 is fixedly connected to the rotating rod 12 by bolts, and the bolts are used to facilitate the user to fix and release the position of the extension part 17 as needed.

[0033] Guide roller groups are arranged on both sides of the workbench 3 near the unwinding roller and the receiving roller. The guide roller groups prevent the film from being separated from the workbench 3 due to the change of position of the film guide part 1 7 and the film guide part 2 8, and can guide the film to be smoothly transferred to the workbench 3.

[0034] like Figures 1-2As shown, both the film guiding part one 7 and the film guiding part two 8 include two rotating rollers and a connecting frame. The two rotating rollers are rotatably arranged on the connecting frame, and the connecting frame is connected to the rotating rod 12. Through the clamping drive of the two rotating rollers, the stability of the film transmission is ensured.

[0035] As Figure 3 shown, the rack 9 is provided with a through groove for the embedding rod to be embedded. The embedding rod can slide along the through groove, providing a moving space for subsequent transitional movement by opening the through groove.

[0036] Among them, as Figure 4 shown, a rounded edge structure is provided at the abutting part between the rotating rod 12 and the extension arm of the rotating part 18, and the extension arm of the rotating part 18 is set as a cylindrical structure. Thus, through the cooperation between the rounded edge structure and the cylindrical structure, the occurrence of jamming is reduced.

[0037] Working principle: The punching operation is divided into three steps. The first step is the film position positioning, the second step is the film punching, and the third step is the position reset of the punching device. In the first step, the driving part 1 starts the connecting part 4 to drive the punching tool 2 to move downward, so that the abutting part 5 will first abut against the film to fix the position of the film. At the same time, during the downward movement of the connecting part 4, the embedding rod of the connecting part 4 also moves accordingly. At this time, the embedding rod slides in the through groove of the rack 9, so it will not drive the rack 9 to move. At this time, it corresponds to the process when the abutting part 5 has not yet abutted against the film. When the abutting part 5 abuts against the film, the embedding rod also abuts against the through groove of the rack 9.

[0038] When entering the second step, the driving part 1 further pushes the punching tool 2 downward to perform the punching operation. The elastic element two located between the connecting part 4 and the abutting part 5 will be compressed, so as to ensure the stable downward movement of the connecting part 4. During the continuous downward movement of the connecting part 4, the embedding rod pushes the rack 9 to move downward accordingly. The rack 9 meshes with the coaxial gear pair 10, driving the coaxial gear pair 10 to rotate. The coaxial gear pair 10 meshes with the gear turntable 11, and then drives the gear turntable 11 to rotate accordingly. The gear turntable 11 pushes the rotating rod 12 to rotate through the limiting shell 13.

[0039] Thus, the film guiding part one 7 rotates away from the feeding roller direction. Furthermore, the length of the film that can be accommodated between the feeding roller and the workbench 3 increases. Thus, while ensuring the normal feeding of the feeding roller, the punching process is carried out.

[0040] And the film guiding part two 8 rotates towards the direction close to the winding roller. The length of the film that can be accommodated between the winding roller and the workbench 3 decreases. Thus, the film originally stored due to the film guiding part two 8 will be wound by the winding roller. Thus, while ensuring the normal winding of the winding roller, the punching process is carried out.

[0041] By adjusting the positions of the first film guiding part 7 and the second film guiding part 8, the film storage capacity on one side is increased, and the stored film is placed on one side, so as to meet the normal working requirements of the feeding roller and the winding roller. During the process of not stopping the machine, punching treatment is carried out, and the film on the workbench 3 will not be affected.

[0042] When entering the third step, the connecting part 4 has pushed the punching tool 2 to move to the lowest point. At this time, the gear turntable 11 also pushes the rotating rod 12 to rotate to the maximum angle through the limiting shell 13. When the rotating rod 12 rotates to the maximum angle, the rotating rod 12 will first abut against the extension arm of the rotating part 18 and push the rotating part 18 to rotate. Then the rotating part 18 drives the wave ring 14 to rotate. The fitting part 15 will change from contacting the trough of the wave ring 14 to contacting the crest. When rotating to the maximum angle, the fitting part 15 separates from the crest and has moved towards the trough direction. At this time, the first elastic element 16 will release elastic thrust and push the fitting part 15 to move outwards. Thus, the fitting part 15 pushes the wave ring 14 to rotate accordingly, so that the rotating part 18 pushes the rotating rod 12 to rotate further through the extension arm. This process corresponds to the connecting part 4 driving the punching tool 2 to move upwards and separate from the film. During the process when the abutting part 5 has not separated from the film yet, when the second elastic element returns to its original state, the rotating part 18 also drives the rotating rod 12 to rotate to the maximum value. At the same time, during this process, the inserting rod of the connecting part 4 slides on the through groove of the rack 9, so as to ensure that the position of the gear turntable 11 is fixed at this time.

[0043] Then the connecting part 4 continues to move upwards. At this time, the inserting rod of the connecting part 4 abuts against the upper side wall of the through groove of the rack 9, thereby pushing the rack 9 to move in one direction and then driving the gear turntable 11 to rotate in the reverse direction, and then the positions of all components of the punching device are reset.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A film punching machine, comprising a machine body, a feeding roller, a winding roller and a punching device, characterized in that: The punching device comprises: A driving unit (1) is fixedly mounted on the machine body; A punching tool (2) is used to punch holes in a film, a workbench (3) is provided below the punching tool (2), the driving part (1) is connected to the punching tool (2), and a connecting part (4) is provided at the connecting part; An abutment member (5) used for abutting the film against the workbench (3), the abutment member (5) being connected to the connecting portion (4); A film adjusting member (6) is used to adjust the conveyable length of the film located on both sides of the workbench (3); the film adjusting member (6) is rotatably arranged on the machine body; both ends of the film adjusting member (6) extend to both sides of the workbench (3); a first film guide portion (7) is arranged at one end of the film adjusting member (6) located on the workbench (3) close to the unwinding roller; and a second film guide portion (8) is arranged at one end of the film adjusting member (6) located on the workbench (3) close to the receiving roller; A transmission mechanism, used for driving the film adjustment member (6) to rotate, wherein two ends of the transmission mechanism are respectively in transmission connection with the connection portion (4) and the film adjustment member (6); During the punching process, the connecting portion (4) drives the film adjusting member (6) to rotate via the transmission mechanism, so that the first film guide portion (7) rotates in a direction away from the unwinding roller, and the second film guide portion (8) rotates in a direction close to the receiving roller.

2. The film punching machine according to claim 1, characterized in that: The transmission mechanism comprises: A rack (9) is slidably arranged on the body, an embedding rod is fixedly arranged on the connecting portion (4), and the embedding rod is embedded in the rack (9); A coaxial gear pair (10) is rotatably arranged on the machine body, wherein the coaxial gear pair (10) is arranged as two gears with different diameters, and the two gears are coaxially fixedly arranged, wherein the gear with a smaller diameter is meshed with the rack (9), and the gear with a larger diameter is transmission-connected with the film adjustment member (6).

3. The film punching machine according to claim 2, wherein: The film adjusting member (6) comprises: A gear turntable (11) is rotatably mounted on the machine body, wherein the gear turntable (11) meshes with the coaxial gear pair (10); The rotating rod (12) is arranged on the gear rotating disk (11), and the first and second film guide parts (7) and (8) are respectively fixedly connected at the head and tail ends of the rotating rod (12).

4. The film punching machine according to claim 3, characterized in that: A limit shell (13) is fixedly arranged on the gear turntable (11), and two openings are provided on the limit shell (13) for the front and rear ends of the rotating rod (12) to extend to the outside of the limit shell (13); the rotating rod (12) is rotatably arranged on the gear turntable (11), and an energy storage toggle assembly for toggling the rotating rod (12) is rotatably arranged on the body; When the gear turntable (11) rotates, the rotating rod (12) rotates accordingly and pushes the energy storage toggle assembly to rotate. The energy storage toggle assembly is in an energy storage state. When the connecting portion (4) moves to the lowest point and the connecting portion (4) starts to lift upward, the energy storage toggle assembly releases the stored energy to push the rotating rod (12) to continue rotating in the original direction, which is opposite to the rotation of the gear turntable (11) at this time.

5. The thin film punching machine according to claim 4, wherein: The energy storage toggle assembly comprises: A rotating member (18) is rotatably disposed on the machine body, wherein the rotating member (18) is provided with an extension arm for abutting against the rotating rod (12); The wave ring (14) is fixedly arranged on the rotating shaft of the rotating part (18). The outer side wall of the wave ring (14) is arranged in a wave structure, forming a plurality of wave crest and wave trough structures distributed at intervals; The fitting part (15) is slidably arranged on the machine body. An elastic element I (16) is arranged between the fitting part (15) and the machine body, and is used to push the fitting part (15) to fit the outer side wall of the wave ring (14).

6. The film punching machine according to claim 5, wherein: Extension parts (17) are slidably arranged at the joints of the head and tail ends of the rotating rod (12) and the film guiding part I (7) and the film guiding part II (8) respectively, and are used to increase the overall length of the rotating rod (12).

7. A film punching machine according to claim 1, wherein: The abutting part (5) is slidably arranged on the connecting part (4), and an elastic element II is arranged between the abutting part (5) and the connecting part (4) in an abutting manner, and is used to push the abutting part (5) to fit the film.

8. The film punching machine according to claim 1, wherein: Guide roller groups are arranged on both sides of the workbench (3) close to the unwinding roller and the winding roller, and are used to guide the film to be smoothly conveyed onto the workbench (3).

9. The film punching machine according to claim 5, wherein: Both the film guiding part I (7) and the film guiding part II (8) include two rotating rollers and a connecting frame. The two rotating rollers are rotatably arranged on the connecting frame, and the connecting frame is connected to the rotating rod (12).

10. A film punching machine according to claim 2, characterized in that: A through groove for the insertion rod to be inserted is formed in the rack (9), and the insertion rod can slide along the through groove.

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