Sheet thickness adjustment device for plastic sheet machine

Abstract

The utility model relates to the technical field of plastic sheet machines, and discloses a sheet thickness adjustment device for a plastic sheet machine, comprising an operating table, a fixed frame fixedly connected to one side of the operating table, a discharge pipe fixedly connected to the inner wall of the fixed frame, a bracket fixedly connected to one end of the fixed frame, a cleaning mechanism fixedly connected to the inner wall of the bracket, a transmission mechanism fixedly connected to one side of the bracket, a first roller rotatably connected to one side of the inner wall of the bracket, slide grooves are provided on both sides of the bracket, a mobile frame is slidably connected to the inner wall of the slide groove, a second roller is rotatably connected to the inner wall of the mobile frame, a screw is rotatably connected to one side of the mobile frame, one end of the screw is threadedly connected to the inner wall of one side of the bracket, and a handle is fixedly connected to one end of the screw. The sheet thickness adjustment device for the plastic sheet machine does not require multiple motors and electric cylinders, has low cost and can adjust the sheet thickness, and at the same time cleans the roller surface during the extrusion process, does not affect subsequent sheet extrusion, and improves the sheet quality.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic sheet machines, in particular to a sheet thickness adjustment device for a plastic sheet machine. Background Art

[0002] Plastic sheet machine is a special equipment used to produce plastic sheets. It is widely used in the packaging of food, vegetables, fruits, beverages, dairy products, industrial parts and other fields. The working principle of the plastic sheet machine is to use the extrusion and plasticizing mechanism of the screw or peristaltic pump to plasticize the polymer raw materials under heating and mixing, and continuously extrude them through the mold to make film or sheet products. In the process of sheet discharging, the sheet thickness needs to be adjusted to ensure that it can adapt to the production of sheets of different specifications.

[0003] According to the plastic sheet extruder with adjustable thickness function disclosed in Chinese patent publication number CN218429820U, it includes an operating table, the operating table is connected to a discharge pipe through a frame, the operating table is slidably connected to a support column, a connecting column and a support rod, the support column and the connecting column are connected to a protective box, a motor is installed in the two protective boxes, a groove plate is arranged between the support rod and one of the protective boxes, an adjustment mechanism is connected to the frame, two motors and two rollers are arranged between the adjustment mechanism and the groove plate, a fixed part, a material guide seat and a fan are connected to the operating table, an electric cylinder is installed on the fixed part, a pushing component is arranged between the electric cylinder and the groove plate, and a cooling component is connected to the fan. The plastic sheet extruder with adjustable thickness function is convenient for adjusting the extrusion thickness of the plastic sheet by the extruder through the cooperation of the operating table, the frame, the adjustment mechanism, the motor, the electric cylinder and the pushing component.

[0004] However, the above device adjusts the sheet thickness through multiple motors and electric cylinders, and the equipment cost is relatively high. At the same time, the roller surface cannot be cleaned during the extrusion process, resulting in plastic adhesion on the roller surface, affecting subsequent sheet extrusion. Utility Model Content

[0005] The utility model provides a sheet thickness adjustment device for a plastic sheet machine to solve the problems in the prior art of high equipment cost and inability to clean rollers in time. The device does not require multiple motors and electric cylinders, has low cost and can adjust the sheet thickness. At the same time, the roller surface can be cleaned during the extrusion process without affecting subsequent sheet extrusion, thereby improving the sheet quality.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a sheet thickness adjustment device for a plastic sheet machine, comprising an operating table, a fixed frame fixedly connected to one side of the operating table, a discharge pipe fixedly connected to the inner wall of the fixed frame, a bracket fixedly connected to one end of the fixed frame, a cleaning mechanism fixedly connected to the inner wall of the bracket, a transmission mechanism fixedly connected to one side of the bracket, a first roller rotatably connected to one side of the inner wall of the bracket, slide grooves are provided on both sides of the bracket, a mobile frame is slidably connected to the inner wall of the slide groove, a second roller is rotatably connected to the inner wall of the mobile frame, a screw is rotatably connected to one side of the mobile frame, one end of the screw is threadedly connected to the inner wall of one side of the bracket, and one end of the screw is fixedly connected to a handle.

[0007] Preferably, the transmission mechanism includes a stabilizing frame, one end of the stabilizing frame is fixedly connected to one side of the bracket, the other end of the stabilizing frame is fixedly connected to a motor, the motor output shaft is fixedly connected to a first gear, the surface of the first gear is meshed with a second gear, one side of the first gear and the second gear are both rotatably connected to the inner wall of the stabilizing frame, one side of the first gear and the second gear are both fixedly connected to a universal coupling, and the other end of the universal coupling is fixedly connected to the second roller and the first roller.

[0008] Preferably, the cleaning mechanism comprises a positioning frame, which is fixedly connected to the inner wall of the bracket, and a plurality of sliding holes are opened on the surface of the positioning frame, each of which is slidably connected with a convex rod, one end of the convex rod is fixedly connected with a scraper, and a spring is sleeved on the surface of the convex rod.

[0009] Preferably, a threaded hole is provided on one side of the bracket, and the threaded hole is threadedly connected to the surface of the screw rod.

[0010] Preferably, the upper surface of the operating table is beveled, and the lower portion of the discharge pipe corresponds to the gap between the second roller and the first roller.

[0011] Preferably, one side of the scraper contacts the surface of the second roller and the surface of the first roller.

[0012] Preferably, one end of the spring is fixedly connected to one side of the positioning frame, and the other end is fixedly connected to the inner side wall of the protruding rod.

[0013] The working principle and use principle of the utility model are as follows: an operating table is placed on the table, a discharging pipe is connected to a plastic heating device, the motor drives the first gear to rotate, the first gear drives the second gear to rotate, and at the same time the first gear and the second gear drive the universal coupling to rotate, so that the universal coupling drives the second roller and the first roller to rotate, when the plastic reaches the surface of the first roller and the second roller, the plastic is extruded into sheets through the rotation of the first roller and the second roller, the spring drives the convex rod, so that the convex rod drives one side of the scraper to contact the surface of the second roller and the first roller, so that the scraper cleans the surface of the second roller and the first roller, scrapes off the debris adhering to the surface of the second roller and the first roller, and cleans the roller surface during the extrusion process. It does not affect the subsequent sheet extrusion and improves the quality of the sheet. When the sheet thickness needs to be adjusted, the handle is turned to make the handle drive the screw to rotate in the threaded hole opened on one side of the bracket, and move to one side at the same time to make one end of the screw rotate in the mobile frame. The screw drives the mobile frame to slide on both sides of the bracket, and then drives the second roller to move, so that the distance between the second roller and the first roller changes, and the sheet thickness adjustment is completed. When adjusting the second roller, the second roller drives the universal coupling to deviate, so that the universal coupling at the end of the second roller changes its length, and the adjustment is completed. No multiple motors and electric cylinders are required. The cost is low and the sheet thickness can be adjusted. At the same time, the roller surface during the extrusion process is cleaned, which does not affect the subsequent sheet extrusion and improves the sheet quality.

[0014] The beneficial technical effect of the utility model is that when the thickness of the sheet needs to be adjusted, the handle is turned to make the handle drive the screw to rotate in the threaded hole opened on one side of the bracket, and move to one side at the same time to make one end of the screw rotate in the movable frame, and the screw drives the movable frame to slide on both sides of the bracket, and drives the second roller to move, so that the distance between the second roller and the first roller changes, and the sheet thickness is adjusted. At the same time, the transmission mechanism follows the movement, and there is no need for multiple motors and electric cylinders. The cost is low and the sheet thickness can be adjusted. The cleaning mechanism cleans the surface of the first roller and the second roller to prevent the sheet from sticking to the surface of the first roller and the second roller, and cleans the roller surface during the extrusion process without affecting the subsequent sheet extrusion, thereby improving the sheet quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is an enlarged structural schematic diagram of the section A of the utility model;

[0018] Figure 4 It is a schematic diagram of the transmission mechanism structure of the utility model.

[0019] Among them: 1. operating table; 2. fixed frame; 3. discharge pipe; 4. bracket; 5. first roller; 6. second roller; 7. moving frame; 8. screw; 9. handle; 11. stabilizing frame; 12. motor; 13. first gear; 14. second gear; 15. universal coupling; 21. positioning frame; 22. scraper; 23. convex rod; 24. spring. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0021] A sheet thickness adjustment device for a plastic sheet machine according to this specific embodiment, such as Figure 1-4 As shown, a sheet thickness adjustment device for a plastic sheet machine includes an operating table 1, which supports the device. The upper surface of the operating table 1 is beveled, which facilitates the extruded sheet to slide to one side of the operating table 1. The lower part of the discharge pipe 3 corresponds to the gap between the second roller 6 and the first roller 5, which facilitates extrusion. A fixed frame 2 is fixedly connected to one side of the operating table 1, and a discharge pipe 3 is fixedly connected to the inner wall of the fixed frame 2. The discharge pipe 3 is connected to a plastic heating device. A bracket 4 is fixedly connected to one end of the fixed frame 2, and a cleaning mechanism is fixedly connected to the inner wall of the bracket 4. The cleaning mechanism cleans the surfaces of the first roller 5 and the second roller 6. For cleaning, one side of the bracket 4 is fixedly connected with a transmission mechanism, which can conveniently drive the first roller 5 and the second roller 6 to rotate, and the bracket 4 is stabilized as a whole. One side of the inner wall of the bracket 4 is rotatably connected with the first roller 5, and both sides of the bracket 4 are provided with sliding grooves, and the inner wall of the sliding groove is slidably connected with a moving frame 7, and the inner wall of the moving frame 7 is rotatably connected with the second roller 6, and one side of the moving frame 7 is rotatably connected with a screw rod 8, and one end of the screw rod 8 is threadedly connected to the inner wall of one side of the bracket 4, and a threaded hole is provided on one side of the bracket 4, and the inner thread of the threaded hole is connected to the surface of the screw rod 8, and one end of the screw rod 8 is fixedly connected with a handle 9 for convenient rotation of the screw rod 8.

[0022] Through the above technical scheme, the operating table 1 is placed on the table top, the discharge pipe 3 is connected to the plastic heating device, and the transmission mechanism is driven so that the transmission mechanism drives the first roller 5 and the second roller 6 to rotate. When the plastic reaches the surface of the first roller 5 and the second roller 6, the plastic is extruded into sheets through the rotation of the first roller 5 and the second roller 6. The cleaning mechanism cleans the surface of the first roller 5 and the second roller 6 to prevent the sheet from adhering to the surface of the first roller 5 and the second roller 6. When the thickness of the sheet needs to be adjusted, the handle 9 is turned so that the handle 9 drives the screw 8 to rotate in the threaded hole opened on one side of the bracket 4, and moves to one side at the same time, so that one end of the screw 8 rotates in the moving frame 7, and the screw 8 drives the moving frame 7 to slide on both sides of the bracket 4, and then drives the second roller 6 to move, so that the distance between the second roller 6 and the first roller 5 changes, and the sheet thickness adjustment is completed. At the same time, the transmission mechanism follows the movement, and multiple motors 12 and electric cylinders are not required. The sheet thickness can be adjusted at a low cost, and the roller surface during the extrusion process is cleaned at the same time, which does not affect the subsequent sheet extrusion and improves the sheet quality.

[0023] like Figure 1-4 As shown, the transmission mechanism includes a stabilizing frame 11, one end of the stabilizing frame 11 is fixedly connected to one side of the bracket 4, the other end of the stabilizing frame 11 is fixedly connected to a motor 12, the output shaft of the motor 12 is fixedly connected to a first gear 13, the surface of the first gear 13 is meshed with a second gear 14, one side of the first gear 13 and the second gear 14 are both rotatably connected to the inner wall of the stabilizing frame 11, one side of the first gear 13 and the second gear 14 are both fixedly connected to a universal coupling 15, and the other end of the universal coupling 15 is fixedly connected to the second roller 6 and the first roller 5.

[0024] Through the above technical solution, the motor 12 is started, so that the motor 12 drives the first gear 13 to rotate, and the first gear 13 drives the second gear 14 to rotate. At the same time, the first gear 13 and the second gear 14 drive the universal coupling 15 to rotate, so that the universal coupling 15 drives the second roller 6 and the first roller 5 to rotate, and the sheet is extruded. When the second roller 6 is adjusted, the second roller 6 drives the universal coupling 15 to deviate, so that the universal coupling 15 at the end of the second roller 6 changes its length, and the adjustment is completed.

[0025] The universal coupling 15 is a SWC-BH model. This model of universal coupling 15 can transmit rotation rods of different angles. At the same time, the length of the universal coupling 15 can be changed during movement to adapt to various scenarios. It is mainly used for the first gear 13 and the second gear 14 to transmit the second roller 6 and the first roller 5.

[0026] like Figure 1-4As shown, the cleaning mechanism includes a positioning frame 21, which is fixedly connected to the inner wall of the bracket 4. A plurality of sliding holes are opened on the surface of the positioning frame 21, and a convex rod 23 is slidably connected in each of the sliding holes. A scraper 22 is fixedly connected to one end of the convex rod 23, and a spring 24 is sleeved on the surface of the convex rod 23. One side of the scraper 22 contacts the surface of the second roller 6 and the first roller 5. One end of the spring 24 is fixedly connected to one side of the positioning frame 21, and the other end is fixedly connected to the inner wall of the convex rod 23.

[0027] Through the above technical scheme, the positioning frame 21 stabilizes the cleaning mechanism, and the spring 24 drives the protruding rod 23, so that the protruding rod 23 drives one side of the scraper 22 to contact the surface of the second roller 6 and the first roller 5, so that the scraper 22 cleans the surface of the second roller 6 and the first roller 5, scrapes off the debris adhering to the surface of the second roller 6 and the first roller 5, and cleans the roller surface during the extrusion process, which does not affect the subsequent sheet extrusion and improves the sheet quality.

[0028] Although specific 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 specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet thickness adjustment device for a plastic sheet machine, comprising an operating table (1), a fixing frame (2) fixedly connected to one side of the operating table (1), a discharge pipe (3) fixedly connected to the inner wall of the fixing frame (2), characterized in that: One end of the fixed frame (2) is fixedly connected to a bracket (4), an inner wall of the bracket (4) is fixedly connected to a cleaning mechanism, one side of the bracket (4) is fixedly connected to a transmission mechanism, one side of the inner wall of the bracket (4) is rotatably connected to a first roller (5), two sides of the bracket (4) are provided with slide grooves, the inner wall of the slide groove is slidably connected to a moving frame (7), the inner wall of the moving frame (7) is rotatably connected to a second roller (6), one side of the moving frame (7) is rotatably connected to a screw rod (8), one end of the screw rod (8) is threadedly connected to the inner wall of one side of the bracket (4), and one end of the screw rod (8) is fixedly connected to a handle (9).

2. The sheet thickness adjustment device for a plastic sheet machine according to claim 1, characterized in that: The transmission mechanism comprises a stabilizing frame (11), one end of the stabilizing frame (11) is fixedly connected to one side of the bracket (4), the other end of the stabilizing frame (11) is fixedly connected to a motor (12), the output shaft of the motor (12) is fixedly connected to a first gear (13), the surface of the first gear (13) is meshed with a second gear (14), one side of the first gear (13) and the second gear (14) are both rotatably connected to the inner wall of the stabilizing frame (11), one side of the first gear (13) and the second gear (14) are both fixedly connected to a universal coupling (15), and the other end of the universal coupling (15) is fixedly connected to the second roller (6) and the first roller (5).

3. A sheet thickness adjustment device for a plastic sheet machine according to claim 1 or 2, characterized in that: The cleaning mechanism comprises a positioning frame (21), the positioning frame (21) is fixedly connected to the inner wall of the bracket (4), a plurality of sliding holes are opened on the surface of the positioning frame (21), and a convex rod (23) is slidably connected in each of the sliding holes, a scraper (22) is fixedly connected to one end of the convex rod (23), and a spring (24) is sleeved on the surface of the convex rod (23).

4. A sheet thickness adjustment device for a plastic sheet machine according to claim 1 or 2, characterized in that: A threaded hole is provided on one side of the bracket (4), and the threaded hole is threadedly connected to the surface of the screw rod (8).

5. The sheet thickness adjustment device for a plastic sheet machine according to claim 3, characterized in that: A threaded hole is provided on one side of the bracket (4), and the threaded hole is threadedly connected to the surface of the screw rod (8).

6. A sheet thickness adjustment device for a plastic sheet machine according to claim 1, 2 or 5, characterized in that: The upper surface of the operating table (1) is in an oblique angle shape, and the lower portion of the discharge pipe (3) corresponds to the gap between the second roller (6) and the first roller (5).

7. The sheet thickness adjustment device for a plastic sheet machine according to claim 3, characterized in that: The upper surface of the operating table (1) is in an oblique angle shape, and the lower portion of the discharge pipe (3) corresponds to the gap between the second roller (6) and the first roller (5).

8. The sheet thickness adjustment device for a plastic sheet machine according to claim 3, characterized in that: One side of the scraper (22) contacts the surfaces of the second roller (6) and the first roller (5).

9. The sheet thickness adjustment device for a plastic sheet machine according to claim 3, characterized in that: One end of the spring (24) is fixedly connected to one side of the positioning frame (21), and the other end is fixedly connected to the inner side wall of the protruding rod (23).

Images