PET (Polyethylene Terephthalate) protective film

Abstract

The utility model discloses a PET (Polyethylene Terephthalate) protective film, which belongs to the technical field of PET protective films and comprises a PET protective film, a roller and a mounting frame, the device is novel in design and ingenious, when cut-off is needed, a hand wheel is rotated to drive a driving bevel gear to rotate through a rotating rod, the driving bevel gear can drive a driven bevel gear to rotate, meanwhile, a threaded rod rotates along with the driving bevel gear to drive a T-shaped block to move downwards, and at the moment, a mounting block connected with the threaded rod can synchronously move downwards; the T-shaped sliding block on the other side of the mounting block can synchronously slide outside the sliding rod in an auxiliary mode, the stability and balance of the mounting block in the downward moving process are guaranteed, at the moment, the cutting knife at the bottom of the mounting block can make contact with the PET protective film, the PET protective film is cut off, and therefore the PET protective film can be cut off in a traceless mode according to the actually needed length, and the production efficiency is improved. And the conditions of deformation and uneven tearing positions caused by manual tearing are avoided, so that the use effect of the PET protective film in use is improved, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of PET protective films, and in particular to a PET protective film. Background Art

[0002] A patent with the published authorization announcement number CN213141913U discloses a PET protective film, including a protective film body, which includes a protective layer, an interlayer and an adhesive layer from top to bottom. The side of the interlayer extends outward in a horizontal direction to form an identification block. The thickness of the identification block is the same as that of the interlayer. The interlayer is provided with a breaking through hole at the position of the identification block. The breaking through holes are distributed along the length direction of the identification block to the position where the identification block is connected to the interlayer. The breaking through holes are located within the positive projection range of the protective layer. During use, the identification block is provided with ink or laser marking or the color of the interlayer to indicate the process code or material number of the component. During the assembly process or before leaving the factory, the identification block can be removed as needed, and force is applied to the identification block. Due to the presence of the breaking through hole, the structural strength between the identification block and the interlayer is low, which facilitates the tearing of the identification block.

[0003] The PET protective film in the above patent is an integrated protective film. Therefore, in actual use, it needs to be torn off manually. Manual tearing can easily cause the protective film to deform and the torn part to be uneven, thereby affecting the subsequent use effect of the PET protective film and causing unnecessary waste of the PET protective film, thereby increasing losses and raising the cost of use.

[0004] For this purpose, the present application proposes a PET protective film. Utility Model Content

[0005] The present application proposes a PET protective film to solve the problems raised in the above-mentioned background technology; when it is necessary to cut off, the hand wheel is turned to cause the main bevel gear to rotate through the rotating rod, and the main bevel gear will drive the slave bevel gear to rotate. At the same time, the threaded rod will rotate accordingly, causing the T-block to move downward. At this time, the mounting block connected to it will move downward synchronously, and the T-shaped slider on the other side of the mounting block will synchronously assist in sliding outside the slide rod to ensure the stability and balance of the mounting block when moving downward. At this time, the cutting knife at the bottom of the mounting block will contact the PET protective film to cut off the PET protective film. Therefore, the PET protective film can be cut off without a mark according to the actual length required, avoiding deformation and unevenness of the torn part caused by manual tearing, thereby improving the use effect of the PET protective film and greatly improving the practicality of the device.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A PET protective film comprises a PET protective film, a roller and a mounting frame, wherein the PET protective film is wound and connected to the outside of the roller, the PET protective film comprises a PET substrate layer, an interlayer, an adhesive layer and a protective layer, a connecting rod is fixedly connected between two mounting frames, a cutting assembly is slidably connected between the two mounting frames, the cutting assembly comprises a mounting block, the mounting block is slidably connected between the two mounting frames and is located above the PET protective film, a cutting knife is fixedly connected to the bottom of the mounting block, and the bottom end of the cutting knife contacts the top of the PET protective film.

[0008] As a preferred embodiment, a rotating assembly is rotatably connected inside one of the mounting frames, and the rotating assembly includes a rotating rod, which is rotatably connected inside the mounting frame, and one end of the rotating rod located outside the mounting frame is fixedly connected to a hand wheel;

[0009] By turning the hand wheel, the hand wheel will drive the rotating rod to provide driving force, which is suitable for use in small devices, thereby improving the practicality of the device.

[0010] As a preferred embodiment, one of the mounting frames is internally rotatably connected to a power assembly, the power assembly comprises a main bevel gear, the main bevel gear is fixedly connected to an end of the rotating rod away from the hand wheel and is located inside the mounting frame, the mounting frame is internally rotatably connected to a slave bevel gear, and the slave bevel gear is meshingly connected to the main bevel gear;

[0011] The main bevel gear is driven to rotate by the rotating rod, and the main bevel gear drives the slave bevel gear to rotate and drive, thereby improving the practicability of the device.

[0012] As a preferred embodiment, a lifting assembly is rotatably connected inside one of the mounting frames, and the lifting assembly includes a threaded rod, the threaded rod is rotatably connected inside the mounting frame, and the bottom end of the threaded rod is fixedly connected to the inside of the bevel gear, and the external thread of the threaded rod is threadedly connected to a T-block;

[0013] By turning the bevel gear, the threaded rod connected to it also rotates, causing the T-block to move downward, thereby improving the practicality of the device.

[0014] As a preferred embodiment, another auxiliary component is fixedly connected inside the mounting frame, and the auxiliary component includes a slide bar, which is fixedly connected inside the mounting frame, and a T-shaped slider is slidably connected outside the slide bar, and the two sides of the mounting block are fixedly connected to the T-shaped slider and the T-shaped block respectively;

[0015] When the mounting block moves downward, the T-shaped slider on one side of the mounting block will synchronously slide outside the slide bar to assist in sliding, ensuring the stability and balance of the mounting block when moving downward, thereby improving the practicality of the device.

[0016] As a preferred embodiment, a buffer assembly is fixedly connected to the outside of the two mounting frames and located below the mounting block, and the buffer assembly includes a rubber pad and a sponge block, and a sponge block is arranged between every two rubber pads;

[0017] By arranging the buffer assembly, the rubber pad and the sponge block, when the mounting block moves downward, the mounting block will first contact the rubber pad before the cutting knife contacts the PET protective film. The sponge block has a certain buffering effect on the mounting block, thereby reducing the gravity when the mounting block moves downward, causing the cutting knife to cause unnecessary damage to the PET protective film, thereby reducing the loss of the PET protective film and improving the practicability of the device.

[0018] Beneficial effects of this application:

[0019] 1. When the PET protective film needs to be cut off, the hand wheel is turned to cause the main bevel gear to rotate through the rotating rod, and the main bevel gear will drive the slave bevel gear to rotate. At the same time, the threaded rod rotates accordingly, causing the T-block to move downward. At this time, the mounting block connected thereto will move downward synchronously, and the T-shaped slider on the other side of the mounting block will synchronously slide outside the slide rod to assist in sliding, ensuring the stability and balance of the mounting block when it moves downward. At this time, the cutting knife at the bottom of the mounting block will contact the PET protective film to cut off the PET protective film. Therefore, the PET protective film can be cut off without a mark according to the actual length required, avoiding deformation and unevenness of the torn part caused by manual tearing, thereby improving the use effect of the PET protective film when in use, and greatly improving the practicality of the device;

[0020] 2. The PET protective film is provided with a buffer component, a rubber pad and a sponge block. When the mounting block moves downward, the mounting block will first contact the rubber pad before the cutting knife contacts the PET protective film. The sponge block has a certain buffering effect on the mounting block, thereby reducing the gravity when the mounting block moves downward, causing the cutting knife to cause unnecessary damage to the PET protective film. Thus, the loss of the PET protective film is reduced, and the practicability of the device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main body of the device of this application;

[0022] Figure 2 It is a schematic diagram of the interior of the device of the present application;

[0023] Figure 3 For this application Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 Schematic diagram of the PET protective film of the device of this application.

[0025] Numbers in the figure: 1. PET protective film; 2. PET substrate layer; 3. interlayer; 4. adhesive layer; 5. protective layer; 6. mounting bracket; 7. rotating assembly; 71. hand wheel; 72. rotating rod; 8. power assembly; 81. main bevel gear; 82. slave bevel gear; 9. lifting assembly; 91. threaded rod; 92. T-block; 10. cutting assembly; 101. mounting block; 102. cutting knife; 11. auxiliary assembly; 111. sliding rod; 112. T-sliding block; 12. buffer assembly; 121. rubber pad; 122. sponge block; 13. roller; 14. connecting rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0027] Reference Figure 1-4 A PET protective film includes a PET protective film 1, a roller 13 and a mounting frame 6. The PET protective film 1 is wound and connected to the outside of the roller 13. The PET protective film 1 includes a PET substrate layer 2, an interlayer 3, an adhesive layer 4 and a protective layer 5. A connecting rod 14 is fixedly connected between two mounting frames 6.

[0028] Reference Figure 1-4 A cutting assembly 10 is slidably connected between the two mounting frames 6, and the cutting assembly 10 includes a mounting block 101, which is slidably connected between the two mounting frames 6 and is located above the PET protective film 1. A cutting knife 102 is fixedly connected to the bottom of the mounting block 101, and the bottom end of the cutting knife 102 contacts the top of the PET protective film 1; the PET protective film 1 can be seamlessly cut off according to the actual length required, avoiding deformation and unevenness of the torn portion caused by manual tearing, thereby improving the use effect of the PET protective film 1.

[0029] Reference Figure 1-3 One of the mounting frames 6 is internally rotatably connected to a rotating assembly 7, and the rotating assembly 7 includes a rotating rod 72, which is rotatably connected to the inside of the mounting frame 6, and one end of the rotating rod 72 located outside the mounting frame 6 is fixedly connected to a hand wheel 71; by rotating the hand wheel 71, the hand wheel 71 will drive the rotating rod 72 to provide driving force, which is suitable for use in small devices, thereby improving the practicality of the device.

[0030] Reference Figure 1-3The internal rotation of one of the mounting frames 6 is connected to a power assembly 8, which includes a main bevel gear 81. The main bevel gear 81 is fixedly connected to the end of the rotating rod 72 away from the hand wheel 71 and is located inside the mounting frame 6. The internal rotation of the mounting frame 6 is connected to a slave bevel gear 82, and the slave bevel gear 82 is meshed with the main bevel gear 81; the main bevel gear 81 is driven to rotate by the rotating rod 72, and the main bevel gear 81 drives the slave bevel gear 82 to rotate for driving, thereby improving the practicability of the device.

[0031] Reference Figure 1-3 A lifting assembly 9 is rotatably connected to the interior of one of the mounting frames 6, and the lifting assembly 9 includes a threaded rod 91, which is rotatably connected to the interior of the mounting frame 6, and the bottom end of the threaded rod 91 is fixedly connected to the interior of the slave bevel gear 82, and the external thread of the threaded rod 91 is connected to a T-block 92; by rotating the slave bevel gear, the threaded rod 91 connected thereto also rotates, causing the T-block 92 to move downward, thereby improving the practicability of the device.

[0032] Reference Figure 1-3 , another mounting frame 6 is fixedly connected to the inside with an auxiliary component 11, the auxiliary component 11 includes a slide bar 111, the slide bar 111 is fixedly connected to the inside of the mounting frame 6, the outside of the slide bar 111 is slidably connected to a T-shaped slider 112, and the two sides of the mounting block 101 are respectively fixedly connected to the T-shaped slider 112 and the T-shaped block 92; when the mounting block 101 moves downward, the T-shaped slider 112 on one side of the mounting block 101 will synchronously assist in sliding on the outside of the slide bar 111, ensuring the stability and balance of the mounting block 101 when moving downward, thereby improving the practicality of the device.

[0033] Reference Figure 1-4 A buffer assembly 12 is fixedly connected to the outside of the two mounting frames 6 and located below the mounting block 101. The buffer assembly 12 includes a rubber pad 121 and a sponge block 122. A sponge block 122 is arranged between every two rubber pads 121. By arranging the buffer assembly 12, the rubber pad 121 and the sponge block 122, when the mounting block 101 moves downward, the mounting block 101 will first contact the rubber pad 121 before the cutting knife 102 contacts the PET protective film 1. The sponge block 122 has a certain buffering effect on the mounting block 101, reducing the gravity when the mounting block 101 moves downward, causing the cutting knife 102 to cause unnecessary damage to the PET protective film 1, thereby reducing the loss of the PET protective film 1, thereby improving the practicality of the device.

[0034] Working principle: When in use, the roller 13 wrapped with the PET protective film 1 is installed between the two mounting frames 6, and the PET protective film 1 is stretched to the required length through the portable connecting rod 14. When it needs to be cut, the hand wheel 71 is turned to cause the main bevel gear 81 to rotate through the rotating rod 72, and the main bevel gear 81 will drive the slave bevel gear 82 to rotate. At the same time, the threaded rod 91 rotates accordingly, causing the T-block 92 to move downward. At this time, the mounting block 101 connected thereto will move downward synchronously, and the T-sliding block 112 on the other side of the mounting block 101 will synchronously slide outside the sliding rod 111 to ensure the stability and balance of the mounting block 101 when it moves downward. At this time, the cutting knife 102 at the bottom of the mounting block 101 will contact the PET protective The PET protective film 1 is in contact with the film 1 to realize the cutting operation on the PET protective film 1. By setting the buffer component 12, the rubber pad 121 and the sponge block 122, when the mounting block 101 moves downward, the mounting block 101 will first contact the rubber pad 121 before the cutting knife 102 contacts the PET protective film 1, and the sponge block 122 has a certain buffering effect on the mounting block 101, thereby reducing the gravity when the mounting block 101 moves downward, causing the cutting knife 102 to cause unnecessary damage to the PET protective film 1, thereby reducing the loss of the PET protective film 1. Therefore, the PET protective film 1 can be seamlessly cut off according to the actual length required, avoiding deformation and unevenness of the torn part caused by manual tearing, thereby improving the use effect of the PET protective film 1 when in use.

[0035] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A PET protective film, comprising a PET protective film (1), a roller (13) and a mounting frame (6), characterized in that: The PET protective film (1) is wound and connected to the outside of the roller (13), and the PET protective film (1) comprises a PET base material layer (2), an interlayer (3), an adhesive layer (4) and a protective layer (5). A connecting rod (14) is fixedly connected between the two mounting frames (6), and a cutting assembly (10) is slidably connected between the two mounting frames (6). The cutting assembly (10) comprises a mounting block (101), and the mounting block (101) is slidably connected between the two mounting frames (6) and is located above the PET protective film (1). A cutting knife (102) is fixedly connected to the bottom of the mounting block (101), and the bottom end of the cutting knife (102) contacts the top of the PET protective film (1).

2. A PET protective film according to claim 1, characterized in that: A rotating assembly (7) is rotatably connected inside one of the mounting frames (6), the rotating assembly (7) comprising a rotating rod (72), the rotating rod (72) being rotatably connected inside the mounting frame (6), and one end of the rotating rod (72) located outside the mounting frame (6) being fixedly connected to a hand wheel (71).

3. A PET protective film according to claim 2, characterized in that: A power assembly (8) is rotatably connected to the interior of one of the mounting frames (6), the power assembly (8) comprising a main bevel gear (81), the main bevel gear (81) being fixedly connected to an end of the rotating rod (72) away from the hand wheel (71) and located inside the mounting frame (6), and a slave bevel gear (82) is rotatably connected to the interior of the mounting frame (6), and the slave bevel gear (82) is meshingly connected to the main bevel gear (81).

4. A PET protective film according to claim 3, characterized in that: A lifting assembly (9) is rotatably connected to the interior of one of the mounting frames (6), the lifting assembly (9) comprising a threaded rod (91), the threaded rod (91) being rotatably connected to the interior of the mounting frame (6), the bottom end of the threaded rod (91) being fixedly connected to the interior of the bevel gear (82), and the outside of the threaded rod (91) being threadedly connected to a T-block (92).

5. A PET protective film according to claim 4, characterized in that: Another mounting frame (6) is internally fixedly connected to an auxiliary component (11), the auxiliary component (11) comprising a slide bar (111), the slide bar (111) being fixedly connected to the inside of the mounting frame (6), the outside of the slide bar (111) being slidably connected to a T-shaped slide block (112), and the two sides of the mounting block (101) are respectively fixedly connected to the T-shaped slide block (112) and the T-shaped block (92).

6. A PET protective film according to claim 5, characterized in that: A buffer assembly (12) is fixedly connected to the outside of the two mounting frames (6) and located below the mounting block (101); the buffer assembly (12) comprises a rubber pad (121) and a sponge block (122); a sponge block (122) is provided between every two rubber pads (121).

Images