Multi-layer composite co-extrusion plastic protective film production device

Abstract

The utility model relates to the technical field of plastic protective films, and discloses a multi-layer composite co-extrusion plastic protective film production device which comprises a base, a U-shaped frame is fixedly connected to the top of the base, a plurality of first fixing rods are fixedly connected to the left side and the right side of the interior of the U-shaped frame, and first rotating cylinders are rotationally connected to the outer sides of the first fixing rods; supports are fixedly connected to the left end and the right end of the front side of the base correspondingly, first grooves are formed in the adjacent sides of the two supports correspondingly, moving blocks are slidably connected to the interiors of the two first grooves correspondingly, and racks are fixedly connected to the adjacent sides of the two moving blocks correspondingly; and two second fixing rods are fixedly connected to the adjacent sides of the two racks. According to the utility model, the position angle between the second rotary drum and the first rotary drum is changed, the tension applied to the protective film is changed, and the thickness of the protective film is uniform, so that the overall performance of the protective film is consistent, and the production quality of the protective film is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic protective film technology, and in particular to a production device for multi-layer composite co-extruded plastic protective film. Background Technology

[0002] During the production, transportation, and storage of products, contact and friction with other objects are inevitable. Protective film can form a protective barrier on the surface of objects, effectively reducing scratches, wear, and abrasions. Protective film can also provide a certain degree of chemical protection and extend the service life of products.

[0003] Some materials have excellent barrier properties, effectively preventing the penetration of oxygen, water vapor, odors, etc., while others have good mechanical strength, flexibility and heat-sealing properties. Through multi-layer composite co-extrusion, these materials with different properties can be combined to make the protective film perform well in many aspects and meet complex and diverse application needs.

[0004] Currently, most multi-layer composite co-extruded plastic protective film production equipment on the market uses a fixed rotating drum to cure the protective film. It cannot extrude and cure the protective film as needed, resulting in uneven thickness of the protective film. Some areas may be too thick or too thin, thus making the overall performance of the protective film inconsistent. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-layer composite co-extruded plastic protective film production device, which aims to improve the problem of the existing technology using a fixed rotating drum to cure the protective film, which cannot extrude and cure the protective film as needed, resulting in uneven thickness of the protective film, with some areas being too thick or too thin, thus causing inconsistent overall performance of the protective film.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-layer composite co-extruded plastic protective film production device, comprising a base, a U-shaped frame fixedly connected to the top of the base, multiple first fixed rods fixedly connected to the left and right sides of the interior of the U-shaped frame, and a first rotating cylinder rotatably connected to the outer side of each of the multiple first fixed rods, brackets fixedly connected to the left and right ends of the front side of the base, a first groove provided on the adjacent side of each of the two brackets, a moving block slidably connected inside each of the two first grooves, a rack fixedly connected to the adjacent side of each of the two moving blocks, two second fixed rods fixedly connected to the adjacent side of each of the two racks, a second rotating cylinder rotatably connected to the outer wall of each of the two second fixed rods, a crossbar fixedly connected to the front side of each of the two brackets, a rotating rod rotatably connected to the right side of the right crossbar, two gears fixedly connected to the left end of the rotating rod through the crossbar, the two gears meshing with the corresponding racks respectively, a third fixed rod fixedly connected to the adjacent side of each of the two crossbars, a third rotating cylinder rotatably connected to the outer wall of the third fixed rod, and a cooling mechanism provided on the top of the base for cooling the protective film.

[0007] As a further description of the above technical solution:

[0008] The cooling mechanism includes fan motors. Two fan motors are fixedly connected to the front and rear sides of the top of the U-shaped frame. The output ends of the two fan motors pass through the U-shaped frame and are fixedly connected to a second rotating shaft. Fan blades are fixedly connected to the bottom ends of the two second rotating shafts. Fixed plates are fixedly connected to the front and rear sides of the interior of the U-shaped frame. The bottom of the two fixed plates is fixedly connected to the same horizontal plate. Multiple ventilation holes are equidistantly opened on the top of the horizontal plate. Multiple air inlets are equidistantly opened on the top of the U-shaped frame.

[0009] As a further description of the above technical solution:

[0010] A U-shaped plate is fixedly connected to the rear end of the base, and a rotating motor is fixedly connected to the right side of the U-shaped plate. The output end of the rotating motor passes through the U-shaped plate and is fixedly connected to a first rotating shaft. A winding drum is fixedly connected to the outer wall of the first rotating shaft.

[0011] As a further description of the above technical solution:

[0012] The two first grooves have sliding grooves on their front and back sides, and the two movable blocks are fixedly connected to sliders on their front and back sides, with the sliders sliding inside the corresponding sliding grooves respectively.

[0013] As a further description of the above technical solution:

[0014] A switch is fixedly connected to the right side of the U-shaped frame, and the switch is electrically connected to the fan motor and the rotating motor respectively.

[0015] As a further description of the above technical solution:

[0016] The base is fixedly connected to a first support rod and a second support rod on its front and rear sides, and the first support rod is cross-connected to the corresponding second support rod.

[0017] As a further description of the above technical solution:

[0018] Both crossbars are fixedly connected to the top of a triangular support frame, and the rear sides of both triangular support frames are fixedly connected to the front side of the bracket.

[0019] As a further description of the above technical solution:

[0020] Each of the two first grooves has a sliding block inside it, and the two sliding blocks are the same size as the first groove.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the rotation of the gear causes the rack to move the second rotating drum up and down, thereby changing the position angle between the second rotating drum and the first rotating drum, changing the tension on the protective film, making the thickness of the protective film uniform, thus making the overall performance of the protective film consistent and improving the production quality of the protective film.

[0023] 2. In this utility model, the fan motor drives the rotating shaft to rotate, so that the fan blades blow external cold air out through the air vents on the horizontal plate, making the blown air more uniform and covering a larger area, making the protective film cool more quickly, and improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a front view of a multilayer composite co-extruded plastic protective film production apparatus according to the present invention;

[0025] Figure 2 This is a rear view of a multilayer composite co-extruded plastic protective film production apparatus according to the present invention.

[0026] Figure 3 This is a partial structural exploded view of a multilayer composite co-extruded plastic protective film production device proposed in this utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of a multi-layer composite co-extruded plastic protective film production device proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Cooling mechanism; 201. Fan motor; 202. Second rotating shaft; 203. Fan blade; 204. Fixing plate; 205. Horizontal plate; 206. Vent hole; 207. Air inlet; 3. U-shaped frame; 4. First fixing rod; 5. First rotating drum; 6. Support; 7. First groove; 8. Moving block; 9. Rack; 10. Second fixing rod; 11. Second rotating drum; 12. Horizontal bar; 13. Rotating rod; 14. Gear; 15. Third fixing rod; 16. Third rotating drum; 17. U-shaped plate; 18. Rotating motor; 19. First rotating shaft; 20. Winding drum; 21. Slide groove; 22. Slider; 23. Switch; 24. First support rod; 25. Second support rod; 26. Triangular support frame. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a multi-layer composite co-extruded plastic protective film production device, comprising a base 1, a U-shaped frame 3 fixedly connected to the top of the base 1, multiple first fixing rods 4 fixedly connected to the left and right sides of the interior of the U-shaped frame 3, and a first rotating cylinder 5 rotatably connected to the outer side of each of the multiple first fixing rods 4, brackets 6 fixedly connected to the left and right ends of the front side of the base 1, a first groove 7 opened on the adjacent side of each of the two brackets 6, a moving block 8 slidably connected inside each of the two first grooves 7, a rack 9 fixedly connected to the adjacent side of each of the two moving blocks 8, two second fixing rods 10 fixedly connected to the adjacent side of each of the two racks 9, a second rotating cylinder 11 rotatably connected to the outer wall of each of the two second fixing rods 10, and a crossbar 12 fixedly connected to the front side of each of the two brackets 6, the right side of the crossbar 12 being... A rotating rod 13 is rotatably connected to the side. The left end of the rotating rod 13 passes through the crossbar 12 and is fixedly connected to two gears 14. The two gears 14 are respectively meshed with the corresponding racks 9. A third fixed rod 15 is fixedly connected to each adjacent side of the two crossbars 12. A third rotating cylinder 16 is rotatably connected to the outer wall of the third fixed rod 15. A cooling mechanism 2 is provided on the top of the base 1. The cooling mechanism 2 cools the protective film. A U-shaped plate 17 is fixedly connected to the rear end of the base 1. A rotating motor 18 is fixedly connected to the right side of the U-shaped plate 17. The output end of the rotating motor 18 passes through the U-shaped plate 17 and is fixedly connected to a first rotating shaft 19. A winding drum 20 is fixedly connected to the outer wall of the first rotating shaft 19. Moving blocks 8 are slidably connected inside the two first grooves 7. The two moving blocks 8 are the same size as the first grooves 7.

[0033] Specifically, the protective film needs to be passed through the bottom of the third rotating drum 16 outside the third fixing rod 15, and then sequentially passed between the second rotating drums 11 installed on the two second fixing rods 10, and between multiple first rotating drums 5. At this time, the rotating rod 13 drives the gear 14 to rotate, so that the rack 9 drives the second fixing rod 10 to move up and down, which changes the relative position angle between the second rotating drum 11 and the first rotating drum 5, thereby adjusting the tension borne by the protective film. Then, the switch 23 is turned on to start the rotating motor 18, which drives the winding drum 20 to rotate and wind up the protective film.

[0034] Reference Figure 3 , Figure 4 and Figure 5 The cooling mechanism 2 includes a fan motor 201. Two fan motors 201 are fixedly connected to the front and rear sides of the top of the U-shaped frame 3. The output ends of the two fan motors 201 pass through the U-shaped frame 3 and are fixedly connected to a second rotating shaft 202. The bottom ends of the two second rotating shafts 202 are fixedly connected to fan blades 203. The front and rear sides of the interior of the U-shaped frame 3 are fixedly connected to a fixing plate 204. The bottom of the two fixing plates 204 are fixedly connected to the same horizontal plate 205. The top of the horizontal plate 205 is provided with multiple ventilation holes 206 at equal intervals. The top of the U-shaped frame 3 is provided with multiple air inlets 207 at equal intervals.

[0035] Specifically, turning on switch 23 causes the two fan motors 201 to work, which in turn drives the second rotating shaft 202 to rotate, causing the fan blades 203 to start rotating. This effectively draws external cold air into the equipment. Subsequently, the cold air is blown out evenly through the multiple ventilation holes 206 densely distributed on the horizontal plate 205, ensuring that the airflow blown by the fan blades 203 is more evenly distributed, thereby accelerating the cooling process of the protective film and improving its cooling efficiency.

[0036] Reference Figure 2 and Figure 3 The front and rear sides of the two first grooves 7 are provided with sliding grooves 21, and the front and rear sides of the two moving blocks 8 are fixedly connected with sliders 22. Multiple sliders 22 slide in the corresponding sliding grooves 21. The right side of the U-shaped frame 3 is fixedly connected with a switch 23, which is electrically connected to the fan motor 201 and the rotating motor 18 respectively.

[0037] Specifically, the slide 21 and the slider 22 allow the moving block 8 to move more stably within the first groove 7, and the switch 23 can freely control whether the fan motor 201 and the rotary motor 18 work.

[0038] Reference Figure 1 and Figure 3 The base 1 is fixedly connected to the front and rear sides with a first support rod 24 and a second support rod 25. The first support rod 24 is cross-connected to the corresponding second support rod 25. The top of the two crossbars 12 is fixedly connected to a triangular support frame 26. The rear side of the two triangular support frames 26 is fixedly connected to the front side of the bracket 6.

[0039] Specifically, the first support rod 24 and the second support rod 25 make the base 1 more stable and prevent it from shaking easily during operation, while the triangular support frame 26 makes the crossbar 12 more stable and secure.

[0040] Working principle: When using the multi-layer composite co-extruded plastic protective film production device, the protective film needs to be passed through the bottom of the third rotating drum 16 on the outer wall of the third fixed rod 15, and simultaneously passed through the second rotating drum 11 on the outer wall of the two second fixed rods 10 and between the multiple first rotating drums 5. At this time, rotating the rotating rod 13 drives the gear 14 to rotate, and at the same time, the rack 9 drives the second fixed rod 10 to move up and down, so that the position angle between the second rotating drum 11 and the first rotating drum 5 changes, thereby changing the tension on the protective film. At the same time, turning on the switch 23 allows the rotating motor 18 to rotate, which drives the winding drum 20 to rotate and wind up the protective film.

[0041] Furthermore, during the winding process, cooling is carried out. At this time, the switch 23 is turned on to make the two fan motors 201 work and drive the second rotating shaft 202 to rotate, so that the fan blades 203 rotate to draw in external cold air and blow it out from the multiple vents 206 on the horizontal plate 205, making the air blown by the fan blades 203 more even and allowing the protective film to cool down faster.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer composite co-extruded plastic protective film production apparatus, comprising a base (1), characterized in that: A U-shaped frame (3) is fixedly connected to the top of the base (1). Multiple first fixing rods (4) are fixedly connected to the left and right sides of the interior of the U-shaped frame (3). A first rotating cylinder (5) is rotatably connected to the outer side of each of the multiple first fixing rods (4). A bracket (6) is fixedly connected to the left and right ends of the front side of the base (1). A first groove (7) is opened on the adjacent side of each of the two brackets (6). A moving block (8) is slidably connected inside each of the two first grooves (7). A rack (9) is fixedly connected to the adjacent side of each of the two moving blocks (8). Two second fixing rods (10) are fixedly connected to the adjacent side of each of the two racks (9). The two second fixing rods (10)... The outer wall of 10) is rotatably connected to a second rotating cylinder (11). The front side of the two brackets (6) is fixedly connected to a crossbar (12). The right side of the right crossbar (12) is rotatably connected to a rotating rod (13). The left end of the rotating rod (13) passes through the crossbar (12) and is fixedly connected to two gears (14). The two gears (14) are respectively meshed with the corresponding racks (9). The adjacent side of the two crossbars (12) is fixedly connected to a third fixing rod (15). The outer wall of the third fixing rod (15) is rotatably connected to a third rotating cylinder (16). The top of the base (1) is provided with a cooling mechanism (2). The cooling mechanism (2) cools the protective film.

2. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: The cooling mechanism (2) includes a fan motor (201). Two fan motors (201) are fixedly connected to the front and rear sides of the top of the U-shaped frame (3). The output ends of the two fan motors (201) pass through the U-shaped frame (3) and are fixedly connected to a second rotating shaft (202). The bottom ends of the two second rotating shafts (202) are fixedly connected to fan blades (203). The front and rear sides of the interior of the U-shaped frame (3) are fixedly connected to a fixing plate (204). The bottom of the two fixing plates (204) are fixedly connected to the same horizontal plate (205). The top of the horizontal plate (205) is provided with multiple ventilation holes (206) at equal intervals. The top of the U-shaped frame (3) is provided with multiple air inlets (207) at equal intervals.

3. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: A U-shaped plate (17) is fixedly connected to the rear end of the base (1), and a rotating motor (18) is fixedly connected to the right side of the U-shaped plate (17). The output end of the rotating motor (18) passes through the U-shaped plate (17) and is fixedly connected to a first rotating shaft (19). A winding drum (20) is fixedly connected to the outer wall of the first rotating shaft (19).

4. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: The front and rear sides of the two first grooves (7) are provided with sliding grooves (21), and the front and rear sides of the two moving blocks (8) are fixedly connected with sliders (22), and the multiple sliders (22) slide inside the corresponding sliding grooves (21).

5. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: A switch (23) is fixedly connected to the right side of the U-shaped frame (3), and the switch (23) is electrically connected to the fan motor (201) and the rotating motor (18) respectively.

6. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: The base (1) is fixedly connected to a first support rod (24) and a second support rod (25) on its front and rear sides, and the first support rod (24) is cross-connected to the corresponding second support rod (25).

7. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: The top of each of the two crossbars (12) is fixedly connected to a triangular support frame (26), and the rear side of each of the two triangular support frames (26) is fixedly connected to the front side of the bracket (6).

8. The multilayer composite co-extruded plastic protective film production apparatus according to claim 1, characterized in that: The interior of each of the two first grooves (7) is slidably connected with a movable block (8), and the two movable blocks (8) are the same size as the first grooves (7).

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