Slitting mechanism for PET protective film production

Abstract

The utility model relates to the technical field of PET protective film production, in particular to a slitting mechanism for PET protective film production, which comprises a U-shaped support frame, mounting parts are arranged on the left side and the right side of the lower end of the support frame, a U-shaped mounting plate is slidably connected to the inner end of the support frame, and a moving rod is fixedly mounted at the inner end of the mounting plate; the outer wall of the moving rod is evenly sleeved with a plurality of sliding sleeves, the lower end of each sliding sleeve is fixedly provided with a slitting knife through a fixing base, a limiting mechanism is arranged between each sliding sleeve and the moving rod, and by screwing a hand-screwing bolt, the front end of the hand-screwing bolt penetrates through the side wall of the corresponding sliding sleeve to be inserted into a limiting groove and makes close contact with the side wall of an anti-skid pad; the sliding sleeve and the slitting knife are fixed, the hand-screwing bolt is unscrewed to be separated from the non-slip mat, the positions of the sliding sleeve and the slitting knife can be moved, and the distance between the two knife heads can be adjusted at will according to requirements to conduct slitting work of a film.

Description

Technical Field

[0001] The utility model relates to the technical field of PET protective film production, in particular to a slitting mechanism for PET protective film production. Background Art

[0002] PET film has the characteristics of high temperature resistance, good printing, easy processing and good voltage insulation. It is often used as the outer layer material of cooking packaging and is commonly used in life. During the production process of PET film, a slitting machine is required to process the PET film to obtain PET film rolls of composite sizes.

[0003] Chinese patent CN203579764U provides a film slitting machine, in which threaded holes for use with screws are provided on the cutter shaft, thereby strengthening the fixing strength of the screws and the cutter shaft. However, the threaded holes need to be pre-processed on the cutter shaft, and the slitting width when the slitting machine is subsequently used to slit the film is changed according to user needs, resulting in the slitting machine being able to only slit films of a fixed width and being unable to arbitrarily adjust the distance between the two blades to perform film slitting work according to needs, which has limitations in use. Utility Model Content

[0004] The purpose of the utility model is to provide a slitting mechanism for producing PET protective film to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a slitting mechanism for producing PET protective film, comprising: a support frame, the support frame being U-shaped, with mounting components provided on both left and right sides of the lower end of the support frame, a mounting plate being slidably connected to the inner end of the support frame, the mounting plate being U-shaped, and a movable rod being fixedly mounted on the inner end of the mounting plate;

[0006] The outer wall of the moving rod is evenly sleeved with a plurality of sliding sleeves, the lower end of each sliding sleeve is fixedly installed with a slitting knife through a fixing seat, and a limiting mechanism is arranged between the sliding sleeve and the moving rod.

[0007] Preferably, the mounting component includes a fixing frame, which is U-shaped, one end of the fixing frame is fixedly mounted on the bottom end of the support frame, the other end of the fixing frame is threadedly connected with a fixing bolt, the upper end of the fixing bolt passes through the lower end side wall of the fixing frame and is rotatably connected to a push plate, and one end side wall of the push plate is slidably connected to the inner wall of the fixed frame.

[0008] Preferably, the upper end of the support frame is threadedly connected to a threaded rod, and the lower end of the threaded rod passes through the side wall of the support frame and is rotatably connected to the upper end of the mounting plate through a bearing.

[0009] Preferably, a sliding groove is provided at the lower end of the movable rod, and a slider is fixedly mounted on the inner wall of the lower end of the sliding sleeve. When the sliding sleeve is sleeved on the outer end of the movable rod, the slider slides into the sliding groove.

[0010] Preferably, a fixing seat is fixedly mounted on the lower end of the sliding sleeve, and the upper end of the slitting knife is inserted into the fixing seat and fixed by bolts.

[0011] Preferably, the limiting mechanism includes a limiting groove formed on the outer wall of the movable rod and a hand-tightening bolt threadedly connected to the outer wall of the sliding sleeve. An anti-slip pad is fixedly installed in the limiting groove. The front end of the hand-tightening bolt passes through the side wall of the sliding sleeve and is inserted into the limiting groove, and is in close contact with the side wall of the anti-slip pad.

[0012] Preferably, side panels are fixedly installed on the front and rear sides of the left and right ends of the support frame, the outer sides between the two side panels are rotatably connected to guide rollers, and the inner sides are rotatably connected to pressure rollers. A movable groove and a fixed plate are opened on the inner side of each side panel, and the fixed plate is located at the lower end of the movable groove.

[0013] Preferably, a spring is fixedly mounted on the upper end of the fixed plate, a moving block is fixedly mounted on the upper end of the spring, one end of the moving block is slidably inserted into the moving groove, and the other end is rotatably connected to the pressure roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By tightening the hand bolt, inserting its front end through the side wall of the sliding sleeve into the limit groove, and making close contact with the side wall of the anti-slip pad, the sliding sleeve and the slitting knife are fixed. By loosening the hand bolt and separating it from the anti-slip pad, the position of the sliding sleeve and the slitting knife can be moved, making it easy to adjust the distance between the two blades as needed to perform film slitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection between the mounting plate and the support frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the upper end structure of the mobile rod of the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified view of the structure of the middle A area;

[0020] Figure 5 This is a schematic diagram of the connection between the pressure roller and the guide roller of the utility model;

[0021] Figure 6 For this utility model Figure 5 A magnified view of the structure of region B in the middle.

[0022] In the figure: 1. Support frame; 2. Mounting plate; 3. Threaded rod; 4. Fixed frame; 5. Push plate; 6. Fixing bolt; 7. Moving rod; 8. Limiting groove; 9. Anti-slip pad; 10. Slide groove; 11. Slide sleeve; 12. Slider; 13. Fixed seat; 14. Slitting knife; 15. Side plate; 16. Moving groove; 17. Fixed plate; 18. Spring; 19. Moving block; 20. Pressure roller; 21. Guide roller; 22. Tightening bolt. DETAILED DESCRIPTION

[0023] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-6 The utility model provides a technical solution: a slitting mechanism for producing PET protective film, comprising: a support frame 1, the support frame 1 is U-shaped, and mounting components are provided on both the left and right sides of the lower end of the support frame 1, and the mounting components include a fixing frame 4, the fixing frame 4 is U-shaped, one end of the fixing frame 4 is fixedly installed on the bottom end of the support frame 1, and the other end of the fixing frame 4 is threadedly connected with a fixing bolt 6, the upper end of the fixing bolt 6 passes through the lower end side wall of the fixing frame 4 and is rotatably connected to a push plate 5, one end side wall of the push plate 5 is slidably connected to the inner wall of the fixing frame 4, the openings of the two fixing frames 4 on the left and right sides of the lower end of the support frame 1 are both facing inward, and the support frame 1 is placed on the PET protective film At the upper end of the film outlet of the production machine, two fixed frames 4 are respectively clamped on the side walls at both ends of the PET protective film production machine, and then the fixing bolts 6 are tightened to make the push plate 5 and the side walls at both ends of the PET protective film production machine in close contact to fix the device. The inner end of the support frame 1 is slidably connected with the mounting plate 2, and the mounting plate 2 is U-shaped. The left and right outer walls of the mounting plate 2 are slidably connected to the left and right outer walls of the support frame 1. The upper end of the support frame 1 is threadedly connected with a threaded rod 3. The lower end of the threaded rod 3 passes through the side wall of the support frame 1 and is rotatably connected to the upper end of the mounting plate 2 through a bearing. By rotating the threaded rod 3, the mounting plate 2 can be driven to move up and down in the support frame 1.

[0025] A moving rod 7 is fixedly installed on the inner end of the mounting plate 2, and a sliding groove 10 is opened at the lower end of the moving rod 7. A slider 12 is fixedly installed on the inner wall of the lower end of the sliding sleeve 11. A plurality of sliding sleeves 11 are evenly sleeved on the outer wall of the moving rod 7. When the sliding sleeve 11 is sleeved on the outer end of the moving rod 7, the slider 12 slides and inserts into the sliding groove 10. When the sliding sleeve 11 moves, the slider 12 slides in the sliding groove 10 to guide and limit the sliding sleeve 11.

[0026] The lower end of each sliding sleeve 11 is fixedly mounted with a slitting knife 14 through a fixing seat 13. The lower end of the sliding sleeve 11 is fixedly mounted with a fixing seat 13. The upper end of the slitting knife 14 is inserted into the fixing seat 13 and fixed by bolts, which facilitates the disassembly and assembly of the slitting knife 14. A limiting mechanism is set between the sliding sleeve 11 and the moving rod 7.

[0027] The limiting mechanism includes a limiting groove 8 provided on the outer wall of the moving rod 7 and a hand-tightening bolt 22 threadedly connected to the outer wall of the sliding sleeve 11. The hand-tightening bolt 22 is located just outside the limiting groove 8. By screwing the hand-tightening bolt 22, one end of the hand-tightening bolt 22 can be inserted into the limiting groove 8. An anti-slip pad 9 is fixedly installed in the limiting groove 8. The front end of the hand-tightening bolt 22 passes through the side wall of the sliding sleeve 11 and is inserted into the limiting groove 8. It is in close contact with the side wall of the anti-slip pad 9 to fix the sliding sleeve 11 and the slitting knife 14. By loosening the hand-tightening bolt 22 and separating it from the anti-slip pad 9, the position of the sliding sleeve 11 and the slitting knife 14 can be moved, so that the distance between the two blades can be adjusted at will according to needs to perform film slitting work.

[0028] Side panels 15 are fixedly installed on the front and rear sides of the left and right ends of the support frame 1. The outer sides between the two side panels 15 are rotatably connected to the guide roller 21, and the inner sides are rotatably connected to the pressure roller 20. A movable groove 16 and a fixed plate 17 are opened on the inner side of each side panel 15. The fixed plate 17 is located at the lower end of the movable groove 16, and a spring 18 is fixedly installed on the upper end of the fixed plate 17. A movable block 19 is fixedly installed on the upper end of the spring 18. One end of the movable block 19 is slidably inserted into the movable groove 16, and the other end is rotatably connected to the pressure roller 20. The pressure roller 20 is located at the lower end of the guide roller 21. The pressure roller 20 can move up and down in the side panel 15 by compressing the spring 18, so as to tighten the PET protective film, avoid wrinkles when the PET film is slid, and improve the slitting quality of the PET film.

[0029] In actual use, by fixing the device on the upper end of the film outlet of the PET protective film production machine, the PET protective film passes through the upper end of the guide roller 21 after coming out of the film outlet, and then passes through the lower end of the pressure roller 20, and then passes through the lower end of the pressure roller 20 on the other side, and then passes through the upper end of the guide roller 21 and connects to the external winding roller. At this time, after adjusting the position of the slitting knife 14, rotate the threaded rod 3 to drive the slitting knife 14 to move down to the lower end of the PET protective film. When the winding roller winds up the PET protective film, the slitting of the PET protective film is completed.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slitting mechanism for producing PET protective film, comprising: A support frame (1) is U-shaped, characterized in that: mounting components are provided on both left and right sides of the lower end of the support frame (1); the inner end of the support frame (1) is slidably connected to a mounting plate (2); the mounting plate (2) is U-shaped; a moving rod (7) is fixedly installed on the inner end of the mounting plate (2); The outer wall of the moving rod (7) is evenly sleeved with a plurality of sliding sleeves (11), and the lower end of each sliding sleeve (11) is fixedly mounted with a slitting knife (14) through a fixing seat (13), and a limiting mechanism is provided between the sliding sleeve (11) and the moving rod (7).

2. A slitting mechanism for producing PET protective film according to claim 1, characterized in that: The mounting component comprises a fixing frame (4), the fixing frame (4) being U-shaped, one end of the fixing frame (4) being fixedly mounted on the bottom end of the supporting frame (1), the other end of the fixing frame (4) being threadedly connected with a fixing bolt (6), the upper end of the fixing bolt (6) passing through the lower end side wall of the fixing frame (4) and being rotatably connected with a push plate (5), and one end side wall of the push plate (5) being slidably connected to the inner wall of the fixing frame (4).

3. The slitting mechanism for producing PET protective film according to claim 1, characterized in that: The upper end of the support frame (1) is threadedly connected to a threaded rod (3), and the lower end of the threaded rod (3) passes through the side wall of the support frame (1) and is rotatably connected to the upper end of the mounting plate (2) through a bearing.

4. The slitting mechanism for producing PET protective film according to claim 1, characterized in that: The lower end of the moving rod (7) is provided with a sliding groove (10), and the inner wall of the lower end of the sliding sleeve (11) is fixedly installed with a slider (12). When the sliding sleeve (11) is sleeved on the outer end of the moving rod (7), the slider (12) slides and inserts into the sliding groove (10).

5. The slitting mechanism for producing PET protective film according to claim 1, characterized in that: A fixing seat (13) is fixedly mounted on the lower end of the sliding sleeve (11), and the upper end of the slitting knife (14) is inserted into the fixing seat (13) and fixed by bolts.

6. The slitting mechanism for producing PET protective film according to claim 1, characterized in that: The limiting mechanism comprises a limiting groove (8) provided on the outer wall of the moving rod (7) and a hand-tightening bolt (22) threadedly connected to the outer wall of the sliding sleeve (11); an anti-slip pad (9) is fixedly installed in the limiting groove (8); the front end of the hand-tightening bolt (22) passes through the side wall of the sliding sleeve (11) and is inserted into the limiting groove (8), and is in close contact with the side wall of the anti-slip pad (9).

7. The slitting mechanism for producing PET protective film according to claim 1, characterized in that: Side plates (15) are fixedly installed on both the front and rear sides of the left and right ends of the support frame (1); the outer sides between the two side plates (15) are rotatably connected to a guide roller (21); the inner sides are rotatably connected to a pressure roller (20); the inner sides of each side plate (15) are provided with a movable groove (16) and a fixed plate (17); the fixed plate (17) is located at the lower end of the movable groove (16).

8. The slitting mechanism for producing PET protective film according to claim 7, characterized in that: A spring (18) is fixedly mounted on the upper end of the fixed plate (17), and a moving block (19) is fixedly mounted on the upper end of the spring (18). One end of the moving block (19) is slidably inserted into the moving groove (16), and the other end is rotatably connected to the pressure roller (20).

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