Die cutting equipment for preparing protective film

Abstract

The utility model discloses die-cutting equipment for preparing a protective film, which relates to the technical field of protective film die-cutting appliances and comprises a film reset base, a die-cutting component is arranged at the front end of the film reset base, lead screw support plates are fixedly connected to two sides of the top surface of the film reset base, and lead screw bearings are respectively mounted in the middles of the lead screw support plates on two sides. The inner rings of the lead screw bearings on the two sides are fixedly connected with reset lead screws, the other ends of the reset lead screws are fixedly connected with rotating handles, the rotating handles are arranged on the outer sides of the lead screw supporting plates on the other sides, and film releasing assemblies are arranged behind the reset lead screws. Film rolls of different sizes can be clamped and positioned conveniently through cooperation of the movable tip cones and the tip cones, and the universality of equipment is improved; the appearance quality of a film cutting product is improved; through the cooperation of the conveyor belt and the cutter, the static cutting state relative to the film in the film conveying process is facilitated, and the burr and tearing conditions caused by relative displacement of the cutter and the film are reduced; the equipment improves the production quality and production efficiency of the film.

Description

Technical Field

[0001] This utility model relates to the technical field of protective film die-cutting tools, and in particular to a die-cutting device for preparing protective films. Background Technology

[0002] Protective film die-cutting equipment is widely used in the electronics and industrial fields, including protective films for digital products, automobiles, household appliances, and food preservation. During the production and use of protective films, rolls need to be cut into more easily processed segments. Die-cutting equipment is typically used to process and cut these segments, saving labor and producing the required length, thus improving production efficiency. The basic structure of protective film die-cutting equipment includes a mounting frame, feeding system, film cutting frame, cutting platform, and unloading components. During operation, the protective film is prone to deformation due to lateral offset, resulting in irregularly shaped film pieces that affect subsequent production and reduce efficiency. Furthermore, the cutting action between the blade and the protective film during die-cutting can cause burrs and tears at the edges, impacting production efficiency and quality. Therefore, improvements are made to address these issues. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a die-cutting device for preparing protective films.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a die-cutting device for preparing a protective film, comprising a film resetting machine base, a die-cutting assembly at the front end of the film resetting machine base, and screw support plates fixedly connected to both sides of the top surface of the film resetting machine base. Screw bearings are respectively installed in the middle of the screw support plates on both sides, and a reset screw is fixedly connected to the inner ring of the screw bearings on both sides. A rotating handle is fixedly connected to the other end of the reset screw, and the rotating handle is located outside the screw support plate on the other side. A film feeding assembly is provided behind the reset screw, and double-ring bearings are installed at the front and rear ends above the screw bearings on both sides. A lower roller is installed in the inner ring of the double-ring bearings on both sides, and an upper roller is installed in the inner ring of the upper ring of the double-ring bearings on both sides. A moving plate is provided between the screw support plates on both sides, and a screw sleeve is fixedly connected to the middle of the moving plate. A threaded groove is opened in the inner wall of the screw sleeve, and the screw sleeve is threadedly connected to the reset screw. Double-ring slides are provided at the front and rear ends above the moving plate, and the double-ring slides are sleeved with the upper and lower rollers at the front and rear ends.

[0005] Preferably, the film feeding assembly includes a film feeding frame located at the rear end of the film resetting machine base. Support rollers are rotatably connected to the front and rear ends of the upper part of the film feeding frame. A film clamping roller assembly is located below the rear support roller. Both ends of the film clamping roller assembly are rotatably connected to the rear ends of the middle sections of both sides of the film feeding frame. Multiple linkage pulleys are located at the outer end of the other side of the film feeding frame. These linkage pulleys are fixedly connected to the film clamping roller assembly and the other end of the rear support roller. A reverse drive pulley is fixedly connected to the other end of the front support roller. The reverse drive pulley is located at the outer end of the other side of the film feeding frame, and a reverse drive motor is located on the other side of the reverse drive pulley. The output shaft of the reverse drive motor is fixedly connected to the middle of the reverse drive pulley. The reverse drive motor is mounted on the outer side of the film feeding frame.

[0006] Preferably, the upper end of the film feeding frame is provided with a clamping assembly, and the other end of the clamping assembly is fixedly connected to a forward rotation drive pulley. The forward rotation drive pulley is located at the outer end of the other side of the film feeding frame, and a forward rotation drive motor is provided on the other side of the forward rotation drive pulley. The output shaft of the forward rotation drive motor is fixedly connected to the middle of the forward rotation drive pulley, and the forward rotation drive motor is installed on the outside of the film feeding frame. Two transmission belts are provided on the outer side of the vertical plate on the other side of the film feeding frame. The upper transmission belt passes over the forward rotation drive pulley, the linkage pulley at the rear end of the other side of the film feeding frame, and the linkage pulley fixedly connected to the other end of the upper roller in the film clamping roller group. The lower transmission belt passes over the reverse rotation drive pulley and the linkage pulley fixedly connected to the other end of the lower roller in the film clamping roller group. Two drive motor frames are provided on the other side of the clamping assembly. One end of each of the two drive motor frames is fixedly connected to the outer side of the other side of the film feeding frame, and the other ends of each of the two drive motor frames are fixedly connected to the other ends of the forward rotation drive motor and the reverse rotation drive motor, respectively.

[0007] Preferably, the clamping assembly includes a rotating top cone fixed to one side of the forward drive pulley, the rotating top cone being rotatably connected to the other side of the film feeding frame, and a movable top cone on one side of the rotating top cone, a rotating seat on one side of the movable top cone, and a rotating groove on one side of the movable top cone, in which a rotating ring is rotatably connected, one side of the rotating ring being fixedly connected to the rotating seat, and a plurality of screws being equidistantly rotatably connected to one side of the rotating seat. A connecting seat is installed at the upper middle of one side of the film feeding frame, and the connecting seat has guide thread holes at its four ends. The middle part of each screw is threaded to the connecting seat through the guide thread holes. The connection is as follows: one end of each screw is fixedly connected to a connecting bevel gear, and a double-layer transmission bevel gear is rotatably connected to the middle of one side of the connecting seat. The inner bevel teeth of the double-layer transmission bevel gear mesh with multiple connecting bevel gears for transmission. A driving bevel gear is provided at the lower end of one side of the double-layer transmission bevel gear. The driving bevel gear meshes perpendicularly with the outer bevel teeth of the double-layer transmission bevel gear for transmission. A top cone drive motor is provided on the bottom surface of the driving bevel gear. The output shaft of the top cone drive motor is fixedly connected to the middle of the bottom surface of the driving bevel gear. A protective shell is installed on the outer side of one side of the film feeding frame. The protective shell contains the helical gear transmission structure.

[0008] Preferably, the die-cutting assembly includes a die-cutting base located at the front end of the film resetting machine base. Conveyor belt support plates are fixedly connected to both sides of the top surface of the die-cutting base. A guide plate is fixedly connected to the middle of the rear end of each conveyor belt support plate, and a conveyor belt shaft assembly is located in front of the guide plate. The conveyor belt shaft assembly is rotatably connected to the inner walls of the two side conveyor belt support plates. A pressure plate is located in front of the lower rear end shaft of the conveyor belt shaft assembly. Both ends of the pressure plate are fixedly connected to the two end conveyor belt support plates, and a rotating pressure roller is located above the pressure plate. Spring hubs are fixedly connected to the inner walls of both ends of the rotating pressure roller, and pressure roller shafts are fixedly connected to the middle of the spring hubs on both sides. Both ends of the pressure roller shafts are rotatably connected to the two side conveyor belt support plates. A conveyor belt assembly is located between the conveyor belt support plates. The lower conveyor belt in the conveyor belt assembly bypasses the lower front and rear end shafts and pressure plates of the conveyor belt shaft assembly, and the upper conveyor belt in the conveyor belt assembly bypasses the upper front and rear end shafts and rotating pressure rollers of the conveyor belt shaft assembly.

[0009] Preferably, several rubber strips are equidistantly fixed to the outer side of the upper conveyor belt within the conveyor belt group, and multiple mounting hole groups are equidistantly opened at both ends of the upper conveyor belt within the conveyor belt group. Two cutter rubber strips are provided between the conveyor belt support plates, and countersunk hole groups are opened at both ends of each cutter rubber strip. The cutter rubber strips are clamped to the inner and outer sides of the upper conveyor belt within the conveyor belt group by bolts. A cutter is provided between the conveyor belt support plates, and the cutter is fixed to the middle of the outer cutter rubber strip.

[0010] Preferably, a conveyor motor is fixedly connected to one end of the upper front end and the lower rear end of the conveyor belt shaft assembly. The conveyor motor is located on the outside of one side of the conveyor belt support plate. A pressure roller motor is provided on the outside of one side of the conveyor belt support plate. The output shaft of the pressure roller motor is fixedly connected to one end of the pressure roller shaft. Several motor mounting bases are fixedly connected to the outside of one side of the conveyor belt support plate. The motor mounting bases are respectively fixedly connected to the outside of the conveyor motor and the pressure roller motor.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the movable top cone and the top cone is used to clamp and position film rolls of different sizes, improving the versatility of the equipment; the cooperation between the moving plate and the lead screw is used to reset the film entering the die-cutting assembly, preventing positional deviation during film feeding; the cooperation between the conveyor belt and the adhesive strip is used to fix the position of the film during the film cutting process, improving the shape quality of the cut film products; the cooperation between the conveyor belt and the cutter is used to maintain a static cutting state relative to the film during film transport, reducing burrs and tears caused by relative displacement between the cutter and the film; this equipment improves the production quality and efficiency of the film. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is an overall schematic diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the membrane reset mechanism proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the membrane dispensing assembly structure proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of a half-section of the membrane dispensing assembly proposed in this utility model;

[0017] Figure 5 The present utility model proposes Figure 4 Enlarged schematic diagram of the structure of section A in the middle;

[0018] Figure 6 This is a schematic diagram of the other side of the membrane placement assembly proposed in this utility model;

[0019] Figure 7 The present utility model proposes Figure 6 Enlarged schematic diagram of section B in the middle;

[0020] Figure 8This is a schematic diagram of the membrane winding assembly proposed in this utility model;

[0021] Figure 9 This is a schematic diagram of the die-cutting component structure proposed in this utility model;

[0022] Figure 10 The present utility model proposes Figure 9 Enlarged schematic diagram of the C-section structure;

[0023] Figure 11 This is a schematic diagram of the cross-sectional structure of the die-cutting component proposed in this utility model;

[0024] Figure 12 The present utility model proposes Figure 11 Enlarged schematic diagram of the structure of section D in the middle;

[0025] Figure 13 This is a schematic diagram of the isometric cross-section of the die-cutting component proposed in this utility model;

[0026] Figure 14 The present utility model proposes Figure 13 Enlarged schematic diagram of the structure of section E in the middle.

[0027] In the diagram, the components are numbered as follows: 1. Film reset base; 2. Screw support plate; 3. Screw bearing; 4. Reset screw; 5. Double ring bearing; 6. Lower roller; 7. Upper roller; 8. Moving plate; 9. Screw sleeve; 10. Rotary handle; 11. Film feeding frame; 12. Support roller; 13. Linkage pulley; 14. Forward drive pulley; 15. Reverse drive pulley; 16. Reverse drive motor; 17. Forward drive motor; 18. Drive motor frame; 19. Transmission belt; 20. Rotating top cone; 21. Movable top cone; 22. Rotating seat; 3. Screw; 24. Connecting seat; 25. Connecting bevel gear; 26. Double-layer transmission bevel gear; 27. Drive bevel gear; 28. Top cone drive motor; 29. ​​Film clamping roller assembly; 30. Protective shell; 31. Die-cutting base; 32. Conveyor belt support plate; 33. Conveyor belt shaft assembly; 34. Guide plate; 35. Pressure plate; 36. Rotating pressure roller; 37. Spring hub; 38. Pressure roller shaft; 39. Conveyor belt assembly; 40. Tool strip; 41. Cutter; 42. Conveyor motor; 43. Pressure roller motor; 44. Motor mounting bracket assembly. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example: See Figure 1-14This utility model discloses a die-cutting device for preparing a protective film, comprising a film reset base 1, which facilitates the installation of various mechanisms. A die-cutting assembly is provided at the front end of the film reset base 1, and screw support plates 2 are fixedly connected to both sides of the top surface of the film reset base 1. Screw bearings 3 are respectively installed in the middle of the screw support plates 2, facilitating the connection of a reset screw 4. A reset screw 4 is fixedly connected to the inner ring of the screw bearings 3, facilitating the adjustment of the position of the moving plate 8. A rotating handle 10 is fixedly connected to the other end of the reset screw 4, and the rotating handle 10 is located outside the screw support plate 2 on the other side. A film feeding assembly is provided behind the reset screw 4, and screws 10 are installed at both the front and rear ends above the screw bearings 3 on both sides. The double-ring bearing 5 has a lower roller 6 installed in the inner ring of both sides of the double-ring bearing 5, and an upper roller 7 installed in the inner ring of the upper ring of both sides of the double-ring bearing 5. A movable plate 8 is provided between the two screw support plates 2, which facilitates the movement of the protective film. A screw sleeve 9 is fixedly connected to the middle of the movable plate 8. The inner wall of the screw sleeve 9 has a threaded groove, and the screw sleeve 9 is threadedly connected to the reset screw 4. Double-ring slides are provided at the front and rear ends above the movable plate 8. The double-ring slides are sleeved with the upper roller 7 and lower roller 6 at the front and rear ends. The film feeding assembly includes a film feeding frame 11 located at the rear end of the film reset machine base 1. Support rollers 12 are rotatably connected to the front and rear ends of the upper part of the film feeding frame 11, which facilitates the stretching of the protective film. The protective film is kept flat by means of a clamping roller assembly 29 located below the rear support roller 12. The clamping roller assembly 29 facilitates the flattening of the protective film. Both ends of the clamping roller assembly 29 are rotatably connected to the rear ends of the middle sections of the film feeding frame 11 on both sides. Multiple linkage pulleys 13 are located on the outer end of the other side of the film feeding frame 11, facilitating the driving of the rollers. The linkage pulleys 13 are fixedly connected to the clamping roller assembly 29 and the other end of the rear support roller 12. A reverse drive pulley 15 is fixedly connected to the other end of the front support roller 12. The reverse drive pulley 15 is located on the outer end of the other side of the film feeding frame 11, and a reverse drive motor 16 is located on the other side of the reverse drive pulley 15. The output shaft is fixedly connected to the middle of the reverse drive pulley 15. The reverse drive motor 16 is installed on the outside of the film feeding frame 11. The upper end of the film feeding frame 11 is provided with a clamping assembly, which facilitates the placement of the protective film roll. The other end of the clamping assembly is fixedly connected to the forward drive pulley 14. The forward drive pulley 14 is located on the other side of the film feeding frame 11. The other side of the forward drive pulley 14 is provided with a forward drive motor 17. The output shaft of the forward drive motor 17 is fixedly connected to the middle of the forward drive pulley 14. The forward drive motor 17 is installed on the outside of the film feeding frame 11. Two transmission belts 19 are provided on the outside of the vertical plate on the other side of the film feeding frame 11, which facilitates the transmission of torque.The upper drive belt 19 passes over the forward drive pulley 14, the linkage pulley 13 at the other rear end of the film feeding frame 11, and the linkage pulley 13 fixed to the other end of the upper roller in the film clamping roller assembly 29. The lower drive belt 19 passes over the reverse drive pulley 15 and the linkage pulley 13 fixed to the other end of the lower roller in the film clamping roller assembly 29. Two drive motor brackets 18 are provided on the other side of the clamping assembly, facilitating the installation of drive motors. One end of each drive motor bracket 18 is fixed to the outer side of the other side of the film feeding frame 11. The other end of the motor frame 18 is fixedly connected to the other ends of the forward drive motor 17 and the reverse drive motor 16, respectively. Two transmission belts 19 are provided on the outer side of the other side of the film feeding frame 11, facilitating rotation. The upper transmission belt 19 passes over the forward drive pulley 14, the linkage pulley 13 at the rear end of the other side of the film feeding frame 11, and the linkage pulley 13 fixed to the other end of the upper roller in the film clamping roller assembly 29. The lower transmission belt 19 passes over the reverse drive pulley 15 and the linkage pulley 13 fixed to the other end of the lower roller in the film clamping roller assembly 29.

[0030] In this invention, the clamping assembly includes a rotating top cone 20 fixedly connected to one side of the forward drive pulley 14, which facilitates the rotation of the protective film roll; the rotating top cone 20 is rotatably connected to the other side of the film feeding frame 11, and a movable top cone 21 is provided on one side of the rotating top cone 20, which facilitates the fixing of the protective film roll; a rotating seat 22 is provided on one side of the movable top cone 21, and a rotating groove is opened on one side of the movable top cone 21, in which a rotating ring is rotatably connected, one side of the rotating ring is fixedly connected to the rotating seat 22, and a plurality of screws 23 are equidistantly rotatably connected to one side of the rotating seat 22, which facilitates the pushing of the movable top cone 21; a connecting seat 24 is installed at the middle of the upper end of one side of the film feeding frame 11, and guide screws are opened at the four ends of the connecting seat 24. Each screw 23 has a threaded connection to the connecting seat 24 via a guide threaded hole, and a connecting bevel gear 25 is fixed to one end of each screw 23 for easy transmission. A double-layer transmission bevel gear 26 is rotatably connected to the middle of one side of the connecting seat 24 for easy torque direction conversion. The inner bevel teeth of the double-layer transmission bevel gear 26 mesh with multiple connecting bevel gears 25, and a driving bevel gear 27 is located at the lower end of one side of the double-layer transmission bevel gear 26 for easy torque transmission. The driving bevel gear 27 meshes perpendicularly with the outer bevel teeth of the double-layer transmission bevel gear 26, and a top cone drive motor 28 is located on the bottom surface of the driving bevel gear 27 for torque transmission. To facilitate torque delivery, the output shaft of the top cone drive motor 28 is fixedly connected to the center of the bottom surface of the drive bevel gear 27, and a protective shell 30 is installed on the outer side of one side of the film feeding frame 11. The protective shell 30 helps prevent foreign objects from being drawn into the transmission mechanism. The protective shell 30 includes the helical gear transmission structure. The die-cutting assembly includes a die-cutting base 31 located at the front end of the film resetting base 1. Conveyor belt support plates 32 are fixedly connected to both sides of the top surface of the die-cutting base 31, which facilitates the installation of various mechanisms. A guide plate 34 is fixedly connected to the center of the rear end of the conveyor belt support plate 32, which facilitates the guidance of the protective film into the die-cutting assembly. A conveyor belt shaft assembly 33 is located in front of the guide plate 34, which facilitates the driving of the conveyor belt assembly 3. 9; The conveyor belt shaft assembly 33 is rotatably connected to the inner walls of the two side conveyor belt support plates 32, and a pressure plate 35 is provided in front of the rear end shaft of the lower part of the conveyor belt shaft assembly 33, which facilitates pressure bearing; the two ends of the pressure plate 35 are respectively fixed to the two end conveyor belt support plates 32, and a rotating pressure roller 36 is provided above the pressure plate 35, which provides cutting force to the cutter 41; spring hubs 37 are fixed to the inner walls of the two ends of the rotating pressure roller 36, which prevents damage to the protective film; a pressure roller shaft 38 is fixed to the middle of the two side spring hubs 37, and the two ends of the pressure roller shaft 38 are respectively rotatably connected to the two side conveyor belt support plates 32. A conveyor belt assembly 39 is provided between the conveyor belt support plates 32, which facilitates the transportation of the protective film;The lower conveyor belt inside the conveyor belt assembly 39 bypasses the front and rear end shafts and pressure plate 35 of the lower conveyor belt shaft assembly 33, and the upper conveyor belt inside the conveyor belt assembly 39 bypasses the front and rear end shafts and rotating pressure roller 36 of the upper conveyor belt shaft assembly 33. Several rubber strips are equidistantly fixed to the outer side of the upper conveyor belt inside the conveyor belt assembly 39 to facilitate the fixation of the protective film. Multiple mounting holes are equidistantly opened at both ends of the upper conveyor belt inside the conveyor belt assembly 39. Two cutter rubber strips 40 are provided between the conveyor belt support plates 32 to facilitate the installation of the cutter 41. Each cutter rubber strip 40 has countersunk holes at both ends and is bolted to both the inner and outer surfaces of the upper conveyor belt inside the conveyor belt assembly 39. A cutter 41 is provided between the conveyor belt support plates 32 to facilitate the cutting of the protective film. The cutter 41 is fixed to the middle of the outer cutter strip 40. A conveyor motor 42 is fixed to one end of the upper front end and lower rear end of the conveyor belt shaft assembly 33, facilitating power output. The conveyor motor 42 is located on the outside of one side of the conveyor belt support plate 32. A pressure roller motor 43 is provided on the outside of one side of the conveyor belt support plate 32. The output shaft of the pressure roller motor 43 is fixed to one end of the pressure roller shaft 38. Several motor mounting brackets 44 are fixed to the outside of one side of the conveyor belt support plate 32, facilitating motor installation. The motor mounting brackets 44 are fixed to the outside of the conveyor motor 42 and the pressure roller motor 43, respectively.

[0031] Working principle: When using this utility model, first turn on the power supply of the equipment, then insert the other end of the film roll into the top cone 20, then lift one end of the film roll and start the top cone drive motor 28. The movable top cone 21 slowly approaches one end of the film roll. After the movable top cone 21 completely locks the film roll, pull out one end of the protective film and wrap it around the support roller 12 and the clamping roller group 29 in sequence as shown in the attached figure. Then, adjust the position of the moving plate 8 by using the handle 10 so that the protective film just smoothly passes through the moving plate 8 and the lead screw support plate 2 and passes through the gap between the rollers. Then, place the protective film on the guide plate 34, and then start the forward drive motor 17 and the reverse drive motor 18. The motor 16 is activated, and the protective film is conveyed outward from the film feeding assembly. At the same time, the conveyor motor 42 and the pressure roller motor 43 are started. The semi-circular rubber strip on the conveyor belt 39 presses down on the protective film and is conveyed forward with the conveyor belt 39. When the cutter 41 moves to the lower end of the rotating pressure roller 36, the protective film is cut off under the pressure of the rotating pressure roller 36. When the cutting length of the protective film needs to be adjusted, with the power supply to the equipment disconnected, the bolts at both ends of the cutter rubber strip 40 are removed, and the number of cutters 41 is increased or decreased and their position on the conveyor belt is adjusted. Then, the countersunk holes at both ends of the cutter rubber strip 40 are aligned with the mounting holes at both ends of the conveyor belt 39, and the bolts are reinstalled.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A die-cutting apparatus for preparing a protective film, comprising a film resetting base (1), characterized in that: The front end of the film resetting machine base (1) is provided with a die-cutting assembly, and screw support plates (2) are fixedly connected to both sides of the top surface of the film resetting machine base (1). Screw bearings (3) are respectively installed in the middle of the screw support plates (2) on both sides. A reset screw (4) is fixedly connected to the inner ring of the screw bearings (3) on both sides. A rotating handle (10) is fixedly connected to the other end of the reset screw (4). The rotating handle (10) is placed on the outside of the screw support plate (2) on the other side. A film feeding assembly is provided behind the reset screw (4), and double rings are installed at the front and rear ends above the screw bearings (3) on both sides. The bearing (5) has a lower roller (6) installed in the inner ring of the double ring bearing (5) on both sides, and an upper roller (7) installed in the inner ring of the upper ring of the double ring bearing (5) on both sides. A movable plate (8) is provided between the screw support plates (2) on both sides. A screw sleeve (9) is fixedly connected in the middle of the movable plate (8). A threaded groove is opened on the inner wall of the screw sleeve (9). The screw sleeve (9) is threadedly connected to the reset screw (4). A double ring slide is provided at the front and rear ends above the movable plate (8). The double ring slide is sleeved with the upper roller (7) and lower roller (6) at the front and rear ends.

2. The die-cutting equipment for preparing a protective film according to claim 1, characterized in that: The film feeding assembly includes a film feeding frame (11) located at the rear end of the film resetting base (1). Support rollers (12) are rotatably connected to the front and rear ends of the upper part of the film feeding frame (11). A clamping roller assembly (29) is located below the rear support rollers (12). Both ends of the clamping roller assembly (29) are rotatably connected to the rear ends of the middle sections of both sides of the film feeding frame (11). Multiple linkage pulleys (13) are located at the outer end of the other side of the film feeding frame (11). The linkage pulleys (13) are respectively connected to the clamping roller assembly. (29) and the other end of the rear support roller (12) are fixedly connected, and the other end of the front support roller (12) is fixedly connected to a reverse drive pulley (15). The reverse drive pulley (15) is placed on the other side of the film feeding frame (11), and a reverse drive motor (16) is provided on the other side of the reverse drive pulley (15). The output shaft of the reverse drive motor (16) is fixedly connected to the middle of the reverse drive pulley (15), and the reverse drive motor (16) is installed on the outside of the film feeding frame (11).

3. The die-cutting equipment for preparing a protective film according to claim 2, characterized in that: The upper end of the film feeding frame (11) is provided with a clamping assembly, and the other end of the clamping assembly is fixedly connected to a forward rotation drive pulley (14). The forward rotation drive pulley (14) is located on the outer end of the other side of the film feeding frame (11), and a forward rotation drive motor (17) is provided on the other side of the forward rotation drive pulley (14). The output shaft of the forward rotation drive motor (17) is fixedly connected to the middle of the forward rotation drive pulley (14), and the forward rotation drive motor (17) is installed on the outside of the film feeding frame (11). Two transmission belts (19) are provided on the outer side of the vertical plate on the other side of the film feeding frame (11). The upper transmission belts (19) pass over the forward rotation drive pulley (14) respectively. The linkage pulley (13) at the rear end of the film feeding frame (11) and the linkage pulley (13) fixed to the other end of the upper roller in the film clamping roller group (29) are respectively connected. The transmission belt (19) below passes over the reverse drive pulley (15) and the linkage pulley (13) fixed to the other end of the lower roller in the film clamping roller group (29). Two drive motor frames (18) are provided on the other side of the clamping assembly. One end of the two drive motor frames (18) is fixed to the other side of the film feeding frame (11), and the other end of the two drive motor frames (18) is fixed to the other end of the forward drive motor (17) and the reverse drive motor (16).

4. The die-cutting equipment for preparing a protective film according to claim 3, characterized in that: The clamping assembly includes a rotating top cone (20) fixed to one side of the forward drive pulley (14). The rotating top cone (20) is rotatably connected to the other side of the film feeding frame (11). A movable top cone (21) is provided on one side of the rotating top cone (20). A rotating seat (22) is provided on one side of the movable top cone (21). A rotating groove is opened on one side of the movable top cone (21). A rotating ring is rotatably connected in the rotating groove. One side of the rotating ring is fixed to the rotating seat (22). A plurality of screws (23) are equidistantly rotatably connected to one side of the rotating seat (22). A connecting seat (24) is installed in the middle of the upper end of one side of the film feeding frame (11). The connecting seat (24) has guide thread holes at four ends. The middle part of each screw (23) is threaded to the connecting seat (24) through the guide thread hole. Each screw (23) is fixedly connected to a connecting bevel gear (25) at one end, and a double-layer transmission bevel gear (26) is rotatably connected to the middle of one side of the connecting seat (24). The inner bevel teeth of the double-layer transmission bevel gear (26) mesh with multiple connecting bevel gears (25) for transmission. A driving bevel gear (27) is provided at the lower end of one side of the double-layer transmission bevel gear (26). The driving bevel gear (27) meshes perpendicularly with the outer bevel teeth of the double-layer transmission bevel gear (26). A top cone drive motor (28) is provided on the bottom surface of the driving bevel gear (27). The output shaft of the top cone drive motor (28) is fixedly connected to the middle of the bottom surface of the driving bevel gear (27). A protective shell (30) is installed on the outer side of one side of the film feeding frame (11). The protective shell (30) includes the helical gear transmission structure.

5. The die-cutting equipment for preparing a protective film according to claim 1, characterized in that: The die-cutting assembly includes a die-cutting base (31) located at the front end of the film resetting machine base (1). Conveyor belt support plates (32) are fixedly connected to both sides of the top surface of the die-cutting base (31). A guide plate (34) is fixedly connected to the middle of the rear end of the conveyor belt support plate (32). A conveyor belt shaft assembly (33) is provided in front of the guide plate (34). The conveyor belt shaft assembly (33) is rotatably connected to the inner walls of the two side conveyor belt support plates (32). A pressure plate (35) is provided in front of the rear end shaft of the lower part of the conveyor belt shaft assembly (33). The two ends of the pressure plate (35) are fixedly connected to the two end conveyor belt support plates (32) respectively. A pressure plate (35) is provided above the pressure plate (35). A rotating pressure roller (36) is fixedly connected to the inner walls of both ends of the rotating pressure roller (36) with spring hubs (37). A pressure roller shaft (38) is fixedly connected to the middle of the spring hubs (37) on both sides. The two ends of the pressure roller shaft (38) are rotatably connected to the two conveyor belt support plates (32) on both sides. A conveyor belt group (39) is provided between the conveyor belt support plates (32). The lower conveyor belt in the conveyor belt group (39) passes around the lower front and rear ends of the conveyor belt shaft group (33) and the pressure plate (35). The upper conveyor belt in the conveyor belt group (39) passes around the upper front and rear ends of the conveyor belt shaft group (33) and the rotating pressure roller (36).

6. The die-cutting equipment for preparing a protective film according to claim 5, characterized in that: Several rubber strips are fixed at equal intervals on the outer side of the upper conveyor belt inside the conveyor belt group (39), and multiple mounting hole groups are equally spaced at both ends of the upper conveyor belt inside the conveyor belt group (39). Two blade rubber strips (40) are provided between the conveyor belt support plates (32). Each blade rubber strip (40) has countersunk hole groups at both ends. The blade rubber strips (40) are clamped to the inner and outer sides of the upper conveyor belt inside the conveyor belt group (39) by bolts. A cutter (41) is provided between the conveyor belt support plates (32). The cutter (41) is fixed to the middle of the outer blade rubber strip (40).

7. The die-cutting equipment for preparing a protective film according to claim 6, characterized in that: Conveyor motors (42) are fixedly connected to one end of the upper front end and lower rear end of the conveyor belt shaft assembly (33). The conveyor motors (42) are located on the outside of one side of the conveyor belt support plate (32). A pressure roller motor (43) is provided on the outside of one side of the conveyor belt support plate (32). The output shaft of the pressure roller motor (43) is fixedly connected to one end of the pressure roller shaft (38). Several motor mounting base assemblies (44) are fixedly connected to the outside of one side of the conveyor belt support plate (32). The motor mounting base assemblies (44) are fixedly connected to the outside of the conveyor motor (42) and the pressure roller motor (43) respectively.

Images