A scribing device for protecting a film cutting apparatus

Abstract

The application discloses a film scratching device for protecting a film cutting device, which comprises a moving frame, a moving mechanism, a rotating mechanism, a transition mechanism, a cutter sleeve mechanism and a cutting mechanism. The cutter sleeve mechanism comprises a shell, a connecting sleeve, a pressing rod and a rotating sleeve. The cutting mechanism is arranged in the shell. The pressing rod is fixed between the connecting sleeve and the cutting mechanism. The end of the shell is provided with a clamping groove. The outer side of the connecting sleeve is provided with a clamping block. The clamping block can be inserted into the clamping groove. The outer wall of the shell is provided with a first thread. The inner side wall of the rotating sleeve is provided with a second thread which can be engaged with the first thread. The inner side of the rotating sleeve is provided with a surrounding ring. The surrounding ring is provided with a dismounting gap. The clamping block can pass through the dismounting gap. The application can facilitate the dismounting of the cutting mechanism and improve the dismounting efficiency.

Description

Technical Field

[0001] This invention relates to the field of film cutting equipment technology, and more particularly to a film cutting device for protective film cutting equipment. Background Technology

[0002] Assembly boards used in refrigerators, washing machines, and other similar products are typically covered with a protective film. This film protects the surface of the boards before transportation and assembly, preventing scratches that could affect the quality of the finished product. Before use, the protective film needs to be removed. To facilitate this process, a film-cutting device is usually used to cut the protective film into a specific shape, making it easier to remove from the board surface.

[0003] Existing film-cutting equipment typically includes a cutting mechanism and a blade holder mechanism for fixing the cutting mechanism. In the blade holder mechanism, a cylinder is usually used to fix the cutting mechanism, and a clamping rod within the blade holder mechanism applies cutting force to the cutting mechanism. Since the existing clamping rod is usually fixed to the cylinder by a set screw or a threaded connection, removing or replacing the blades of the film-cutting device usually requires unscrewing the clamping rod, pulling the cutting mechanism out of the cylinder, and then replacing the blades. This disassembly method requires turning multiple turns of the threads on the set screw or the clamping rod body, which is time-consuming, inefficient, and detrimental to subsequent maintenance or blade replacement production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a film slicing device for protective film cutting equipment, which can facilitate the disassembly of the cutting mechanism and improve the disassembly efficiency.

[0005] To address the aforementioned technical problems, the present invention provides a film-cutting device for a protective film cutting equipment, comprising a movable frame, a moving mechanism, a rotating mechanism, a transition mechanism, a blade sleeve mechanism, and a cutting mechanism. The moving mechanism is mounted on the movable frame, and its movable end is connected to the transition mechanism. The cutting mechanism is mounted on the transition mechanism and is pulsatorically connected to the rotating mechanism. The moving mechanism includes a moving drive component and a moving slide block pulsatorically connected to the moving drive component. The transition mechanism is fixed to the moving slide block, and the rotating mechanism is mounted on the transition mechanism.

[0006] The blade sheath mechanism includes a housing, a connecting sleeve, a clamping rod, and a rotating sleeve. The housing is connected to the rotating mechanism. The cutting mechanism is located inside the housing. The connecting sleeve is detachably located at one end of the housing. The clamping rod is fixed between the connecting sleeve and the cutting mechanism. The end of the housing is provided with a locking groove. The outside of the connecting sleeve is provided with a locking block, which can be inserted into the locking groove.

[0007] The outer wall of the outer shell is provided with a first thread, and the inner side wall of the rotating sleeve is provided with a second thread that can mesh with the first thread. The rotating sleeve is sleeved on the outside of the connecting sleeve. The inner side of the rotating sleeve is provided with a retaining ring. The retaining ring protrudes towards the central axis of the rotating sleeve and can block the locking block. The retaining ring is provided with a disassembly notch, and the locking block can pass through the disassembly notch.

[0008] The cutting mechanism includes a connecting rod, a pressure cap, and a cutting tool. One end of the connecting rod is connected to the pressure rod, and the cutting tool is fixed inside the connecting rod and protrudes from the bottom of the pressure cap.

[0009] As an improvement to the above solution, the card slot includes a first card slot and a second card slot arranged opposite to each other, and the card block includes a first card block and a second card block arranged opposite to each other, wherein the positions of the first card block and the second card block can correspond to the positions of the first card slot and the second card slot, respectively.

[0010] As an improvement to the above solution, the tool holder mechanism further includes an inner shell, which is disposed inside the outer shell. The transmission end of the connecting rod passes through the inner shell, and the connecting sleeve is sleeved on the outside of the clamping rod. One end of the clamping rod away from the connecting sleeve abuts against the end face of the transmission end. The fixed end of the connecting rod is screwed to the pressure cap, and the fixed end is provided with a tool fixing groove, in which the tool is fixed. The bottom of the pressure cap is provided with a through hole, and the end of the tool protrudes from the through hole.

[0011] As an improvement to the above solution, the tool fixing groove is located at the central axis of the fixed end and is arranged along the length direction of the fixed end. The side wall of the connecting rod is also provided with a disassembly hole, which communicates with the tool fixing groove. The end of the tool away from the through hole is provided with a disassembly end face, which is exposed in the disassembly hole. There is a gap between the disassembly end face and the edge of the disassembly hole.

[0012] The diameter of the perforation is not less than the diameter of the cutting tool.

[0013] As an improvement to the above solution, the bottom of the fixed blade groove is provided with an insertion cavity, and the end of the blade away from the through hole is the insertion end. The insertion end can be inserted into the insertion cavity. One side of the insertion end is also provided with an abutment surface, which is perpendicular to the disassembly end face. The insertion cavity is provided with an abutment platform, and the abutment surface can abut against the abutment platform.

[0014] As an improvement to the above solution, the transition mechanism includes a fixed platform and a first gear. The fixed platform is fixed to the side of the movable slide. The fixed platform has a vertical through-hole. The first gear is coaxially arranged with the fixed hole and is fixedly connected to the outer wall of the housing. The housing passes through the fixed hole. The rotation mechanism includes a rotation drive and a second gear that is pulsatorically connected to the rotation drive. The rotation drive is vertically arranged and fixed to the fixed platform. The second gear is located on the side of the first gear and meshes with the first gear.

[0015] As an improvement to the above solution, the rotating mechanism further includes a proximity switch. The side of the fixed platform is provided with a detection hole, which communicates with the fixed hole. The proximity switch is fixed in the detection hole, and the detection end of the proximity switch faces the outer casing.

[0016] As an improvement to the above solution, the moving mechanism further includes a rotating lead screw, a lifting seat sleeved on the rotating lead screw, and a longitudinally arranged guide rail. The moving slide is slidably connected to the guide rail, the lifting seat is connected to the lower part of the fixed platform, the internal thread of the lifting seat meshes with the external thread of the rotating lead screw, and the rotating lead screw is longitudinally connected to the movable end of the moving drive component.

[0017] As an improvement to the above solution, the moving mechanism further includes a frame and a buffer pad. The rear side of the frame is fixed to the moving frame. The rotating screw and the guide rail are longitudinally arranged on the side of the frame away from the moving frame. The bottom of the frame is provided with a base plate, which is located below the fixed platform. The buffer pad is fixed to the base plate.

[0018] As an improvement to the above solution, a limit switch is provided on the upper part of the frame, the limit switch is fixed to the side of the frame, and the detection end of the limit switch faces the movable slide.

[0019] Implementing this invention has the following beneficial effects:

[0020] This invention relates to a film-cutting device for protective film cutting equipment, comprising a moving frame, a moving mechanism, a rotating mechanism, a transition mechanism, a blade sleeve mechanism, and a cutting mechanism. The blade sleeve mechanism includes a housing, a connecting sleeve, a pressure rod, and a rotating sleeve. The rotating mechanism can drive the connecting sleeve, the pressure rod, and the rotating sleeve to rotate via the housing. The pressure rod connects the connecting sleeve and the cutting mechanism, providing a supporting cutting force for the cutting mechanism. The housing has a locking groove at its end, and the connecting sleeve has a locking block on its outer side, which can be inserted into the locking groove. The rotating sleeve is threaded onto the connecting sleeve, and a retaining ring on the inner side of the rotating sleeve can block the locking block, preventing it from dislodging from the locking groove, thus fixing the connecting sleeve and further securing the connection between the pressure rod and the cutting mechanism. During disassembly, the rotating sleeve is rotated at a certain angle so that the disassembly notch on the circumferential ring aligns with the locking block, allowing the locking block to disengage from the locking groove. Then, the connecting sleeve and the clamping rod are pulled out, and the cutting mechanism can be further removed to complete the disassembly. This invention only requires rotating a certain angle to disassemble the cutting mechanism, which is more convenient and efficient than traditional film-cutting devices that require multiple rotations of the thread. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the film-cutting device for protective film cutting equipment according to the present invention;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the cutting mechanism and the blade sleeve mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the outer shell, connecting sleeve, and rotating sleeve of the present invention;

[0024] Figure 4 This is a partial cross-sectional structural diagram of the cutting mechanism and the blade sleeve mechanism of the present invention;

[0025] Figure 5 This is a partial structural schematic diagram of the cutting mechanism of the present invention;

[0026] Figure 6 This is a cross-sectional structural diagram of the transition mechanism and the rotation mechanism of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0028] See Figure 1 This invention discloses a film-cutting device for a protective film cutting equipment, comprising a movable frame 1, a movable mechanism 2, a rotating mechanism 3, a transition mechanism 4, a blade sleeve mechanism 6, and a cutting mechanism 5. The movable mechanism 2 can drive the rotating mechanism 3, the transition mechanism 4, and the cutting mechanism 5 to move up and down in the vertical direction, so that the blade 53 of the cutting mechanism 5 moves closer to or away from the protective film. The rotating mechanism 3 is used to control the cutting angle of the blade 53, and the transition mechanism 4 is used to control the connection between the cutting mechanism 5 and the rotating mechanism 3. Specifically, the moving mechanism 2 is mounted on the moving frame 1, which is connected to an external moving device. The moving device can drive the moving frame 1 to move in the X and Y axis directions. The movable end of the moving mechanism 2 is connected to the transition mechanism 4. The cutting mechanism 5 is mounted on the transition mechanism 4 and is driven by the rotating mechanism 3. The rotating mechanism 3 can drive the cutting mechanism 5 to rotate through the transition mechanism 4 to adjust the angle of the cutting mechanism 5. The moving mechanism 2 includes a moving drive component 21 and a moving slide 22 driven by the moving drive component 21. The transition mechanism 4 is fixed on the moving slide 22. The moving drive component 21 can drive the moving slide 22 to move vertically up and down. The rotating mechanism 3 is mounted on the transition mechanism 4.

[0029] See Figure 2 The blade sheath mechanism 6 includes a housing 61, a connecting sleeve 62, a clamping rod 63, and a rotating sleeve 64. The housing 61 is connected to the rotating mechanism 3, so that the rotating mechanism 3 can drive the blade 53 to rotate through the housing 61. The cutting mechanism 5 is located inside the housing 61. The connecting sleeve 62 is detachably located at one end of the housing 61. The clamping rod 63 is fixed between the connecting sleeve 62 and the cutting mechanism 5. The clamping rod 63 is fixedly connected to the connecting sleeve 62 to form a whole. When the connecting sleeve 62 is pulled out, the clamping rod 63 can be pulled out at the same time, so that the clamping rod 63 can be separated from the cutting mechanism 5 and the restriction on the cutting mechanism 5 can be released. The end of the outer shell 61 is provided with a locking groove 611, which is located on the edge of the outer shell 61. The outer side of the connecting sleeve 62 is provided with a locking block 621. During installation, the locking block 621 can be inserted into the locking groove 611, so the outer shell 61 can drive the connecting sleeve 62 to rotate together.

[0030] The outer wall of the outer casing 61 is provided with a first thread 612, and the inner wall of the rotating sleeve 64 is provided with a second thread 641 that can engage with the first thread 612. During installation, the engagement of the first thread 612 and the second thread 641 allows the rotating sleeve 64 to be fitted over the connecting sleeve 62. The inner side of the rotating sleeve 64 is provided with a retaining ring 642, which protrudes towards the central axis of the rotating sleeve 64. Therefore, the retaining ring 642 can block the locking block 621, preventing the locking block 621 from coming out of the locking groove 611, thereby limiting the connecting sleeve 62. The retaining ring 642 is provided with a disassembly notch 643. By rotating the rotating sleeve 64 at a certain angle, the disassembly notch 643 is aligned with the position of the locking groove 611, allowing the locking block 621 to pass through the disassembly notch 643. Therefore, during disassembly, simply rotate the rotating sleeve 64 by a certain angle to pull out the connecting sleeve 62 together with the clamping rod 63, making disassembly convenient.

[0031] See Figure 4 The cutting mechanism 5 includes a pressure cap 52 and a cutter 53. The cutter 53 is fixed inside the connecting rod 51 and protrudes from the bottom of the pressure cap 52 to facilitate cutting the protective film. The pressure cap 52 can press the cutting area in the protective film to ensure that the protective film is not easily displaced during cutting.

[0032] The beneficial effects of the embodiments of the present invention are as follows:

[0033] The film-cutting device for protective film cutting equipment in this embodiment of the invention includes a moving frame 1, a moving mechanism 2, a rotating mechanism 3, a transition mechanism 4, a blade sleeve mechanism 6, and a cutting mechanism 5. The blade sleeve mechanism 6 includes a housing 61, a connecting sleeve 62, a pressing rod 63, and a rotating sleeve 64. The rotating mechanism 3 can drive the connecting sleeve 62, the pressing rod 63, and the rotating sleeve 64 to rotate through the housing 61. The pressing rod 63 is connected between the connecting sleeve 62 and the cutting mechanism 5 and is used to provide a supporting cutting force for the cutting mechanism 5. The outer casing 61 has a locking groove 611 at its end, and the connecting sleeve 62 has a locking block 621 on its outer side. The locking block 621 can be inserted into the locking groove 611. The rotating sleeve 64 is threaded onto the connecting sleeve 62. The inner ring 642 of the rotating sleeve 64 can block the locking block 621, preventing the locking block 621 from coming out of the locking groove 611, thus fixing the connecting sleeve 62 and further fixing the connection between the clamping rod 63 and the cutting mechanism 5. During disassembly, the rotating sleeve 64 is rotated at a certain angle so that the disassembly notch 643 on the ring 642 is aligned with the locking block 621, allowing the locking block 621 to come out of the locking groove 611. Then, the connecting sleeve 62 and the clamping rod 63 are pulled out, and the cutting mechanism 5 can be further pulled out to complete the disassembly. The present invention only requires rotating a certain angle to disassemble the cutting mechanism 5. Compared with the traditional film-cutting device, which requires rotating the thread many times to complete the disassembly, the operation is more convenient and the disassembly efficiency is higher.

[0034] Specifically, see Figure 3 To balance the force and ensure the coaxiality between the connecting sleeve 62, the clamping rod 63, and the outer shell 61, the locking groove 611 includes a first locking groove 6111 and a second locking groove 6112 arranged opposite to each other, with the first locking groove 6111 and the second locking groove 6112 located on symmetrical sides. The locking block 621 includes a first locking block 6211 and a second locking block 6212 arranged opposite to each other, with the first locking block 6211 corresponding to the position of the first locking groove 6111 and the position of the second locking block 6212 corresponding to the position of the second locking groove 6112. The cooperation between the first locking block 6211 and the second locking block 6212 with the first locking slot 6111 and the second locking slot 6112 enables the outer shell 61 to drive the connecting sleeve 62 to rotate through the two sides. At the same time, after the connecting sleeve 62 is installed, the symmetrically arranged assembly structure also keeps the connecting sleeve 62 and the outer shell 61 in a coaxial and centered position.

[0035] See Figure 3The tool holder mechanism 6 further includes an inner shell 65, which is disposed within the outer shell 61. The transmission end of the connecting rod 51 passes through the inner shell 65, and the connecting sleeve 62 is sleeved on the clamping rod 63. The end of the clamping rod 63 away from the connecting sleeve 62 abuts against the end face of the transmission end. The outer shell 61 drives the inner shell 65 to rotate, which in turn drives the connecting rod 51 to rotate, which in turn drives the tool 53 to rotate. To enable the inner shell 65 to drive the connecting rod 51 to rotate, a limiting strip 651 is provided inside the inner shell 65. The limiting strip 651 is provided along the length of the inner shell 65. The bottom of the connecting sleeve 62 is provided with an abutting end 622, which can be inserted into the inner shell 65 and abut against the limiting strip 651. In order for the connecting sleeve 62 to be inserted into the inner shell 65, one side of the connecting sleeve 62 needs to be able to abut against the limiting strip 651. To prevent incorrect installation of the connecting sleeve 62, the cross-sectional area of ​​the first locking block 6211 is larger than that of the second locking block 6212, and the slot area of ​​the first slot 6111 is larger than that of the second slot 6112. In this way, the first locking block 6211 can only be inserted into the first slot 6111, and the second locking block 6212 can only be inserted into the second slot 6112, thereby limiting the angle at which the connecting sleeve 62 is inserted into the outer shell 61, thus enabling successful insertion into the mounting cavity and improving installation efficiency.

[0036] See Figure 4 The connecting rod 51 has a fixed end 511, which is screwed to the pressure cap 52. The fixed end 511 has a knife-fixing groove 513, which can be used to fix the knife 53 in the knife-fixing groove 513 using fasteners such as set screws. The pressure cap 52 has a through hole 521 at the bottom, and the end of the knife 53 protrudes from the through hole 521.

[0037] In production, sometimes to quickly change different cutting tools 53, it is necessary to directly remove the cutting tool 53 without disassembling the connecting sleeve 62, the clamping rod 63, and other components. However, because the protective film cut by the cutting tool 53 is very thin, the length of the cutting tool 53 protruding from the through hole 521 is usually very short, typically less than 0.7mm, making it difficult for workers to remove the cutting tool. To facilitate direct removal of the cutting tool 53, see [reference needed]. Figure 5The tool-fixing groove 513 is located at the central axis of the fixed end 511 and is arranged along the length direction of the fixed end 511. The tool 53 can be directly inserted or pulled out along the axial direction of the connecting rod 51. The side wall of the connecting rod 51 is also provided with a disassembly hole 512, which communicates with the tool-fixing groove 513. The disassembly tool can be directly inserted into the disassembly hole 512. The end of the tool 53 away from the through hole 521 is provided with a disassembly end face 5311, which is exposed in the disassembly hole 512. There is a gap between the disassembly end face 5311 and the edge of the disassembly hole 512. With a gap, the disassembly tool is directly inserted into the gap between the disassembly end face 5311 and the edge of the disassembly hole 512. As the insertion depth of the disassembly tool continues to increase, the distance between the disassembly end face 5311 and the edge of the disassembly hole 512 will become larger and larger. At this time, the cutter 53 moves outward from the through hole 521, making its protrusion from the through hole 521 increasingly larger. When the distance of the cutter 53 protruding from the through hole 521 is large enough, the cutter 53 can be grasped and directly pulled out from the tool-fixing groove 513 without disassembling the connecting sleeve 62 and the clamping rod 63. In order to facilitate the removal of the cutter 53, the diameter of the through hole 521 is not smaller than the diameter of the cutter 53, so as to facilitate the direct removal of the cutter 53 from the through hole 521.

[0038] The bottom of the fixed blade groove 513 is provided with an insertion cavity 5131. The end of the blade 53 furthest from the through hole 521 is the insertion end 531, which can be inserted into the insertion cavity 5131. A contact surface 5312 is also provided on one side of the insertion end 531, which is perpendicular to the disassembly end face 5311. An contact platform 5132 is provided in the insertion cavity 5131. After the insertion end 531 is inserted, the contact surface 5312 abuts against the contact platform 5132. The contact platform 5132 and the contact surface 5312 cooperate to limit the insertion angle of the blade 53, thereby controlling the blade 53 to swing in a predetermined direction. Simultaneously, the contact platform 5132 prevents the blade 53 from rotating during the cutting process.

[0039] See Figure 6The transition mechanism 4 includes a fixed platform 41 and a first gear 42. The fixed platform 41 is fixed to the side of the movable slide 22. When the movable slide 22 moves, it can drive the fixed platform 41. The fixed platform 41 has a vertical through-hole 411. The first gear 42 is coaxially arranged with the fixed hole 411 and is fixedly connected to the outer wall of the outer shell 54. The outer shell 54 passes through the fixed hole 411. The first gear 42 can drive the outer shell 54 to rotate. The rotation mechanism 3 includes a rotation drive member 31 and a second gear 32 that is pulsatorically connected to the rotation drive member 31. The rotation drive member 31 is vertically arranged and fixed on the fixed platform 41. The rotation drive member 31 can drive the second gear 32 to rotate. The second gear 32 is located on the side of the first gear 42 and meshes with the first gear 42. Therefore, the rotation drive member 31 can drive the outer shell 54 to rotate through the meshing of the first gear 42 and the second gear 32.

[0040] After the film cutting is completed, the cutter 53 needs to return to its initial angle to facilitate the cutting of subsequent products. To ensure that the cutter 53 returns to its accurate position, the rotating mechanism 3 also includes a proximity switch 33. The side of the fixed platform 41 is provided with a detection hole 412, which communicates with the fixed hole 411. The proximity switch 33 is fixed in the detection hole 412, and the detection end of the proximity switch 33 faces the housing 54. The proximity switch 33 can detect the rotation angle of the housing 54, thereby detecting the return status of the cutter 53.

[0041] The moving mechanism 2 further includes a rotating lead screw 23, a lifting seat 24 sleeved on the rotating lead screw 23, and a longitudinally arranged guide rail 25. The moving slide 22 is slidably connected to the guide rail 25. The rotating mechanism 3 includes a moving platform. The rotating drive 31 is fixed on the moving platform. The moving platform is fixed to the side of the moving slide 22. The lifting seat 24 is connected to the lower part of the moving platform. The internal thread of the lifting seat 24 meshes with the external thread of the rotating lead screw 23. The rotating lead screw 23 is longitudinally connected to the movable end of the moving drive 21. When the moving drive 21 drives the rotating lead screw 23 to rotate, the lifting seat 24 can rise or fall along the rotating lead screw 23, thereby driving the moving platform to rise or fall. The rotating drive 31 will also rise or fall accordingly.

[0042] The moving mechanism 2 also includes a frame 27 and a buffer pad 28. The rear side of the frame 27 is fixed to the moving frame 1, thereby fixing the moving mechanism 2 to the moving frame 1. The rotating screw 23 and the guide rail 25 are longitudinally arranged on the side of the frame 27 away from the moving frame 1. The bottom of the frame 27 is provided with a base plate 271, which is located below the moving platform. The buffer pad 28 is fixed to the base plate 271. The buffer pad 28 can buffer the descent of the moving platform and prevent large impacts.

[0043] After the film cutting is completed, the cutter 53 needs to return to its initial height to facilitate the cutting of subsequent products. To ensure that the cutter 53 returns to its initial position accurately, a limit switch 272 is provided on the upper part of the frame 27. The limit switch 272 is fixed to the side of the frame 27, and the detection end of the limit switch 272 faces the movable slide 22. The limit switch 272 can detect whether the movable slide 22 has returned to the preset height, thereby detecting the return status of the cutter 53.

[0044] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A film-cutting device for a protective film cutting equipment, characterized in that, The device includes a movable frame, a movable mechanism, a rotating mechanism, a transition mechanism, a blade sheath mechanism, and a cutting mechanism. The movable mechanism is mounted on the movable frame, and its movable end is connected to the transition mechanism. The cutting mechanism is mounted on the transition mechanism and is drivenly connected to the rotating mechanism. The movable mechanism includes a movable drive component and a movable slide block drivenly connected to the movable drive component. The transition mechanism is fixed on the movable slide block, and the rotating mechanism is mounted on the transition mechanism. The blade sheath mechanism includes a housing, a connecting sleeve, a clamping rod, and a rotating sleeve. The housing is kinetically connected to the rotating mechanism. The cutting mechanism is located inside the housing. The connecting sleeve is detachably located at one end of the housing. The clamping rod is fixed between the connecting sleeve and the cutting mechanism. The end of the housing is provided with a locking groove. The outside of the connecting sleeve is provided with a locking block, which can be inserted into the locking groove. The outer wall of the outer shell is provided with a first thread, and the inner wall of the rotating sleeve is provided with a second thread that can mesh with the first thread. The rotating sleeve is sleeved on the outside of the connecting sleeve. The inner side of the rotating sleeve is provided with a retaining ring. The retaining ring protrudes towards the central axis of the rotating sleeve and can block the locking block. The retaining ring is provided with a disassembly notch, and the locking block can pass through the disassembly notch. The cutting mechanism includes a connecting rod, a pressure cap, and a cutting tool. One end of the connecting rod is connected to the pressure rod, and the cutting tool is fixed inside the connecting rod and protrudes from the bottom of the pressure cap.

2. The film-cutting device for protective film cutting equipment according to claim 1, characterized in that, The card slot includes a first card slot and a second card slot arranged opposite to each other, and the card block includes a first card block and a second card block arranged opposite to each other. The positions of the first card block and the second card block can correspond to the positions of the first card slot and the second card slot, respectively.

3. The film-cutting device for protective film cutting equipment according to claim 1, characterized in that, The blade sheath mechanism also includes an inner shell disposed within the outer shell. The transmission end of the connecting rod passes through the inner shell. The connecting sleeve is fitted over the clamping rod. One end of the clamping rod away from the connecting sleeve abuts against the end face of the transmission end. The fixed end of the connecting rod is screwed to the pressure cap. The fixed end has a blade-fixing groove, and the blade is fixed in the blade-fixing groove. The bottom of the pressure cap has a through hole, and the end of the blade protrudes from the through hole.

4. The film-cutting device for a protective film cutting equipment according to claim 3, characterized in that, The tool-fixing groove is located at the central axis of the fixed end and is arranged along the length direction of the fixed end. The side wall of the connecting rod is also provided with a disassembly hole, which communicates with the tool-fixing groove. The end of the tool away from the through hole is provided with a disassembly end face, which is exposed in the disassembly hole. There is a gap between the disassembly end face and the edge of the disassembly hole. The diameter of the perforation is not less than the diameter of the cutting tool.

5. The film-cutting device for a protective film cutting equipment according to claim 4, characterized in that, The bottom of the fixed blade groove is provided with an insertion cavity. The end of the blade away from the through hole is the insertion end. The insertion end can be inserted into the insertion cavity. One side of the insertion end is also provided with an abutment surface. The abutment surface is perpendicular to the disassembly end face. The insertion cavity is provided with an abutment platform. The abutment surface can abut against the abutment platform.

6. The film-cutting device for a protective film cutting equipment according to claim 1, characterized in that, The transition mechanism includes a fixed platform and a first gear. The fixed platform is fixed to the side of the movable slide. The fixed platform has a vertical through-hole. The first gear is coaxially arranged with the fixed hole and is fixedly connected to the outer wall of the housing. The housing passes through the fixed hole. The rotation mechanism includes a rotation drive and a second gear that is pulsatorically connected to the rotation drive. The rotation drive is vertically arranged and fixed to the fixed platform. The second gear is located on the side of the first gear and meshes with the first gear.

7. The film-cutting device for a protective film cutting equipment according to claim 6, characterized in that, The rotating mechanism also includes a proximity switch. The side of the fixed platform is provided with a detection hole, which communicates with the fixed hole. The proximity switch is fixed in the detection hole, and the detection end of the proximity switch faces the housing.

8. The film-cutting device for a protective film cutting equipment according to claim 6, characterized in that, The moving mechanism further includes a rotating lead screw, a lifting seat sleeved on the rotating lead screw, and a longitudinally arranged guide rail. The moving slide is slidably connected to the guide rail, the lifting seat is connected to the lower part of the fixed platform, the internal thread of the lifting seat meshes with the external thread of the rotating lead screw, and the rotating lead screw is longitudinally connected to the movable end of the moving drive component.

9. The film-cutting device for a protective film cutting equipment according to claim 8, characterized in that, The moving mechanism also includes a frame and a buffer pad. The rear side of the frame is fixed to the moving frame. The rotating screw and the guide rail are longitudinally arranged on the side of the frame away from the moving frame. The bottom of the frame is provided with a base plate, which is located below the fixed platform. The buffer pad is fixed to the base plate.

10. The film-cutting device for a protective film cutting equipment according to claim 9, characterized in that, The upper part of the frame is equipped with a limit switch, which is fixed to the side of the frame, with the detection end of the limit switch facing the movable slide.

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