Protective film rewinding device

Abstract

The utility model discloses a protective film rewinding device, which relates to the technical field of protective film rewinding and comprises a base, a tensioning mechanism is arranged on the inner wall of the base, and a guide wheel positioned beside the tensioning mechanism is fixedly connected to the top end of the base. The tensioning mechanism comprises an upper pressing roller, the upper pressing roller is slidably connected to the side wall between the inner walls of the two sides of the base, the two ends of the upper pressing roller are each rotationally connected with a set of connecting blocks, and the top ends of the two sets of connecting blocks are each rotationally connected with a set of adjusting bolts. A protective film penetrates through the space between the upper pressing roller and the lower pressing roller, then the upper pressing roller and the lower pressing roller press the protective film by rotating the adjusting bolt, the protective film drives the lower pressing roller to rotate in the winding process, the friction disc is rubbed through the friction plate, and therefore the lower pressing roller is subjected to resistance in the rotating process, and the protective film is prevented from being damaged. Therefore, the protective film is always in a tight state, and the length of each roll of the rolled protective film is kept consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of protective film rewinding, in particular to a protective film rewinding device. Background Art

[0002] Protective films can be divided into digital product protective films, car protective films, household protective films, food preservative protective films, etc. according to their uses. Functionally, protective films are to put a layer of film on the physical objects we want to protect. When producing and processing protective films, the first step is to blow the film (in a heated drum, polyethylene particles are pushed to the circular die mouth by a screw, and the molten liquid is inflated by compressed air, and then rolled into a film after air cooling); the second step is colloid coating (the film that has been corona treated can be directly coated with polyacrylate glue without the need for primer. The protective film then passes through a longer air heating channel to ensure that water or solvent is evaporated, and then the protective film is cooled by a cooling roller); then it is rolled; finally, it is rewound, slit, and stored (the protective film is directly rewound into the length required by the customer on the rewinding equipment).

[0003] The existing patent (Announcement No.: CN220316794U) discloses a protective film rewinding device, which includes a main body and a tensioning mechanism, and also includes a flattening mechanism and a correcting mechanism. The tensioning mechanism is arranged on the main body, and the flattening mechanism and the correcting mechanism are both arranged on the main body, and the flattening mechanism is located on one side of the tensioning mechanism. The advantages of the utility model are: the protective film rewinding device, by arranging the flattening mechanism and the correcting mechanism, when in use, the expansion grooves on the first flattening roller and the second flattening roller will make the protective film expand from the middle to both sides to avoid the occurrence of longitudinal wrinkles. When the protective film is deflected, the protective film will be pulled in the opposite direction of its deflection to correct the deflected protective film. When it is pulled in the opposite direction of its deflection, the curling edge in the deflection direction will be torn open, which can not only correct the deflected protective film, but also avoid the curling of the protective film, thereby improving the quality of the rewound protective film.

[0004] However, the above technical solution still has certain defects. During the process of winding the protective film, the protective film is not always in a taut state. As a result, when the protective film is wound, if the protective film is in a relaxed state, the protective film is not rolled tightly enough when it is wound onto the winding roller, resulting in an error in the length of the protective film on the winding roller. For this reason, a protective film rewinding device is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a protective film rewinding device to solve the technical problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical solution: a protective film rewinding device, comprising a base, the inner wall of the base is provided with a tensioning mechanism, and the top of the base is fixedly connected with a guide wheel located next to the tensioning mechanism;

[0007] The tensioning mechanism includes an upper pressure roller, which is slidably connected to the side wall between the inner walls on both sides of the base, and two ends of the upper pressure roller are respectively rotatably connected to a group of connecting blocks, and the tops of the two groups of connecting blocks are respectively rotatably connected to a group of adjusting bolts, and the adjusting bolts are threadedly connected to the side walls of the base, and a lower pressure roller is rotatably connected between the inner walls on both sides of the base, and the side walls of the base are fixedly connected to two groups of protective shells, and the two ends of the lower pressure roller extend to the interior of the protective shells respectively, and the two ends of the lower pressure roller are respectively fixedly connected to a group of friction disks, and the inner walls of the two groups of protective shells are respectively slidably connected to two groups of friction plates, and the side walls of the friction plates are affixed to the outer walls of the friction disks.

[0008] As a preferred technical solution of a protective film rewinding device of the utility model, two groups of springs are fixedly connected to the side wall of the friction plate, and the ends of the two groups of springs are fixedly connected to the inner wall of the protective shell.

[0009] As a preferred technical solution of a protective film rewinding device of the utility model, the side wall of the base is fixedly connected with a rewinding mechanism, and the rewinding mechanism includes a fixed component, and the fixed component is rotatably connected to the side wall of the base, and the side wall of the base is rotatably connected with two sets of support rollers.

[0010] As a preferred technical solution of a protective film rewinding device of the utility model, the side wall of the base is fixedly connected to a motor, the output end of the motor is fixedly connected to one end of a synchronous belt, and the other end of the synchronous belt is fixedly sleeved on the outer wall of the fixed component.

[0011] As a preferred technical solution of a protective film rewinding device of the utility model, the fixing assembly includes a fixing tube, the fixing tube is rotatably connected to the side wall of the base, and the outer wall fixing sleeve of the fixing tube is provided with the other end of the synchronous belt.

[0012] As a preferred technical solution for a protective film rewinding device of the utility model, the inner wall of the fixed tube is rotatably connected to a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is threadedly connected to two groups of sliders, the side walls of the two groups of sliders are respectively hinged to multiple groups of push rods, and the ends of the two groups of push rods on the same side are hinged to a group of abutment blocks.

[0013] As a preferred technical solution of a protective film rewinding device of the utility model, the side wall of the abutment block extends to the outside of the fixed tube, and the fixed tube is provided with a sliding groove at a position where it contacts the abutment block.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] 1. The utility model passes the protective film between the upper pressure roller and the lower pressure roller, and then rotates the adjusting bolt to make the upper pressure roller and the lower pressure roller press the protective film. During the winding process, the protective film drives the lower pressure roller to rotate, and the friction plate rubs the friction disk, so that the lower pressure roller is subjected to resistance during the rotation process, so that the protective film is always in a taut state, and the length of each roll of the wound protective film is kept consistent;

[0016] 2. The utility model drives the fixed component to rotate through a motor, thereby driving the winding roller to rotate, so that the protective film is wound up by the winding roller, the winding roller is sleeved on the outside of the fixed tube, and then the bidirectional threaded rod is driven to rotate by an inner hexagonal wrench, so that the abutment block extends to the outside of the fixed tube, so that multiple groups of abutment tubes abut against the outer wall of the winding roller, thereby achieving the fixation of the winding roller, and can adapt to winding rollers with different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0020] Figure 4 This is a schematic diagram of the main cross-sectional structure of the fixed pipe of the utility model;

[0021] Figure 5 It is a schematic diagram of the side cross-sectional structure of the fixed pipe of the utility model.

[0022] In the figure: 1. base; 2. tensioning mechanism; 3. winding mechanism; 4. guide wheel;

[0023] 201, upper pressure roller; 202, connecting block; 203, adjusting bolt; 204, lower pressure roller; 205, protective shell; 206, friction disc; 207, friction plate; 208, spring;

[0024] 301, fixing assembly; 3011, fixing tube; 3012, bidirectional threaded rod; 3013, slider; 3014, push rod; 3015, abutment block; 302, motor; 303, synchronous belt; 304, supporting roller. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A protective film rewinding device, such as Figures 1 to 3 As shown, it comprises a base 1, the inner wall of the base 1 is provided with a tensioning mechanism 2, and the top of the base 1 is fixedly connected with a guide wheel 4 located next to the tensioning mechanism 2;

[0028] The tensioning mechanism 2 includes an upper pressing roller 201, which is slidably connected to the side wall between the inner walls of both sides of the base 1, and two ends of the upper pressing roller 201 are rotatably connected with a group of connecting blocks 202, and the tops of the two groups of connecting blocks 202 are rotatably connected with a group of adjusting bolts 203, which are threadedly connected to the side walls of the base 1, and a lower pressing roller 204 is rotatably connected between the inner walls of both sides of the base 1, and two groups of protective shells 205 are fixedly connected to the side walls of the base 1, and the two ends of the lower pressing roller 204 extend to the inside of the protective shell 205, and the two ends of the lower pressing roller 204 are respectively fixedly connected with a group of friction disks 206, and the inner walls of the two groups of protective shells 205 are respectively slidably connected with two groups of friction plates 207, and the side walls of the friction plates 207 are attached to the outer walls of the friction disks 206, and the side walls of the friction plates 207 are fixedly connected with two groups of springs 208, and the ends of the two groups of springs 208 are fixedly connected to the inner walls of the protective shell 205.

[0029] The protective film is passed over the guide wheel 4, and then passed between the upper pressure roller 201 and the lower pressure roller 204, and then the two sets of adjusting bolts 203 are rotated so that the adjusting bolts 203 push the connecting block 202 to move downward, so that the connecting block 202 drives the upper pressure roller 201 to slide downward, thereby pressing the protective film on the lower pressure roller 204. During the winding process, the spring 208 pushes the friction plate 207 to fit tightly against the friction disk 206, and the lower pressure roller 204 drives the friction disk 206 to rotate during the rotation. Due to the friction between the friction disk 206 and the friction plate 207, the lower pressure roller 204 will not rotate too fast, so that the protective film is subjected to greater resistance when passing between the upper pressure roller 201 and the lower pressure roller 204, so that the protective film is always kept taut during the winding process.

[0030] Please refer to Figure 1 , Figure 4 and Figure 5The side wall of the base 1 is fixedly connected with a winding mechanism 3, and the winding mechanism 3 includes a fixed component 301, and the fixed component 301 is rotatably connected to the side wall of the base 1. The side wall of the base 1 is rotatably connected with two sets of supporting rollers 304. The side wall of the base 1 is fixedly connected with a motor 302, and the output end of the motor 302 is fixedly connected to one end of a synchronous belt 303, and the other end of the synchronous belt 303 is fixedly sleeved on the outer wall of the fixed component 301. The fixed component 301 includes a fixed tube 3011, and the fixed tube 3011 is rotatably connected to the side wall of the base 1. The outer wall of the tube 3011 is fixedly sleeved with the other end of the synchronous belt 303, the inner wall of the fixed tube 3011 is rotatably connected with a bidirectional threaded rod 3012, the outer wall of the bidirectional threaded rod 3012 is threadedly connected with two groups of sliders 3013, the side walls of the two groups of sliders 3013 are respectively hinged with multiple groups of push rods 3014, the ends of the two groups of push rods 3014 on the same side are hinged with a group of abutment blocks 3015, the side walls of the abutment blocks 3015 extend to the outside of the fixed tube 3011, and the fixed tube 3011 is provided with a sliding groove at the contact position with the abutment block 3015.

[0031] The two ends of the winding roller are placed between the two sets of support pulleys to lift the winding roller. The two-way threaded rod 3012 is then driven to rotate by the hexagonal wrench. During the rotation of the two-way threaded rod 3012, the two sets of sliders 3013 are driven to approach each other, thereby pushing the multiple sets of support rods to simultaneously push the abutment blocks 3015 to slide toward the outside of the fixed tube 3011. As the abutment blocks 3015 continue to slide toward the outside of the fixed tube 3011, the multiple sets of abutment blocks 3015 abut against the inner wall of the winding roller, thereby connecting the winding roller and the fixed tube 3011 together. After the protective film passes between the upper pressure roller 201 and the lower pressure roller 204, the end of the protective film is fixed to the outer wall of the winding roller. Then the motor 302 drives the fixed tube 3011 to rotate through the synchronous belt 303, so that the entire fixed assembly 301 rotates, thereby driving the winding roller to rotate.

[0032] When in use, the protective film is passed through between the upper pressing roller 201 and the lower pressing roller 204, and then the upper pressing roller 201 and the lower pressing roller 204 are pressed against the protective film by rotating the adjusting bolt 203. During the winding process, the protective film drives the lower pressing roller 204 to rotate, and the friction plate 207 rubs the friction disk 206, so that the lower pressing roller 204 is subjected to resistance during the rotation, so that the protective film is always in a taut state, and the length of each roll of the wound protective film is kept consistent. The parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0033] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A protective film rewinding device, comprising a base (1), characterized in that: The inner wall of the base (1) is provided with a tensioning mechanism (2), and the top end of the base (1) is fixedly connected with a guide wheel (4) located next to the tensioning mechanism (2); The tensioning mechanism (2) comprises an upper pressure roller (201), the upper pressure roller (201) being slidably connected to the side wall between the inner walls on both sides of the base (1), the two ends of the upper pressure roller (201) being rotatably connected to a group of connecting blocks (202), the top ends of the two groups of connecting blocks (202) being rotatably connected to a group of adjusting bolts (203), the adjusting bolts (203) being threadedly connected to the side wall of the base (1), and the inner walls on both sides of the base (1) being rotatably connected to each other. There is a lower pressure roller (204), the side walls of the base (1) are fixedly connected with two groups of protective shells (205), the two ends of the lower pressure roller (204) respectively extend into the interior of the protective shells (205), the two ends of the lower pressure roller (204) are respectively fixedly connected with a group of friction disks (206), the inner walls of the two groups of protective shells (205) are respectively slidably connected with two groups of friction plates (207), and the side walls of the friction plates (207) are attached to the outer walls of the friction disks (206).

2. A protective film rewinding device according to claim 1, characterized in that: Two groups of springs (208) are fixedly connected to the side wall of the friction plate (207), and the ends of the two groups of springs (208) are fixedly connected to the inner wall of the protective shell (205).

3. The protective film rewinding device according to claim 1, characterized in that: The side wall of the base (1) is fixedly connected to a winding mechanism (3), the winding mechanism (3) comprises a fixing component (301), the fixing component (301) is rotatably connected to the side wall of the base (1), and the side wall of the base (1) is rotatably connected to two groups of supporting rollers (304).

4. A protective film rewinding device according to claim 3, characterized in that: A motor (302) is fixedly connected to the side wall of the base (1); an output end of the motor (302) is fixedly connected to one end of a synchronous belt (303); and the other end of the synchronous belt (303) is fixedly sleeved on the outer wall of the fixed component (301).

5. A protective film rewinding device according to claim 4, characterized in that: The fixing assembly (301) comprises a fixing tube (3011), wherein the fixing tube (3011) is rotatably connected to the side wall of the base (1), and the outer wall fixing sleeve of the fixing tube (3011) is provided with the other end of the synchronous belt (303).

6. A protective film rewinding device according to claim 5, characterized in that: The inner wall of the fixed tube (3011) is rotatably connected to a bidirectional threaded rod (3012), the outer wall of the bidirectional threaded rod (3012) is threadedly connected to two groups of sliders (3013), the side walls of the two groups of sliders (3013) are respectively hinged to multiple groups of push rods (3014), and the ends of the two groups of push rods (3014) on the same side are hinged to a group of abutment blocks (3015).

7. A protective film rewinding device according to claim 6, characterized in that: The side wall of the abutment block (3015) extends to the outside of the fixed tube (3011), and the fixed tube (3011) is provided with a sliding groove at a position in contact with the abutment block (3015).

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