Low-temperature-resistant PVC (polyvinyl chloride) film

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) films, and discloses a low-temperature-resistant PVC film which is characterized in that clamping grooves are formed in the top ends of two positioning frames, a mounting plate is inserted into the inner walls of the clamping grooves, bolts are mounted on the inner walls of the two sides of the mounting plate, the bottom ends of the bolts are in threaded connection with the inner walls of the bottoms of the clamping grooves, and rotating blocks are in threaded connection with the inner walls of the mounting plate; a limiting frame is installed at the bottom end of the rotating block. Through the arrangement of the winding drum, the rotating block and the limiting frame, the rotating block in the mounting plate is rotated, the rotating block drives the limiting frame to move downwards to press the low-temperature-resistant PVC film on the winding drum, the two ends of the limiting frame are matched with the two sides of the winding drum, and the two sides of the low-temperature-resistant PVC film can be effectively fixed; when the low-temperature-resistant PVC thin film on one side is fixed to the winding drum, the low-temperature-resistant PVC thin film on the other winding drum is affected and fixed together, the structure can be matched with the low-temperature-resistant PVC thin films with different thicknesses, and the flexibility of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC film equipment, in particular to a low-temperature resistant PVC film. Background Art

[0002] PVC film is mainly composed of polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, ductility, etc. As a general plastic film, it is widely used in packaging and other fields. In order to enhance the decorative effect, some PVC films adopt a composite structure and add a pattern printing layer, which is marked with patterns, text, trademarks, etc. on the pattern printing layer.

[0003] Application number CN202323287175.9 discloses a low-temperature resistant PVC film, specifically relating to the field of film technology, including a film body, a box body is provided on the outside of the film body, and a support assembly for facilitating the replacement of the film body is provided inside the box body; the support assembly includes a cover, the cover is provided on one side of the box body, and a support shaft is provided on the side of the cover close to the box body. The utility model can provide all-round protection for the film body through the arrangement of the box body and the cover, avoiding damage to the film body caused by collision. At the same time, with the help of the threaded connection between the fastening bolt and the fastening groove on the support shaft, it is convenient to limit the support cylinder sleeved on the support shaft, thereby ensuring the stability of the support cylinder for winding the film body. The threaded connection between the fastening bolt and the support shaft also makes it convenient for the staff to disassemble the cover and remove the support cylinder to replace the film body, thereby improving the convenience of the staff in disassembling and replacing the film body.

[0004] The low-temperature resistant PVC film disclosed in the above document has the following defects: the PVC film is rolled up in the box through a support tube, and a dust-proof effect is achieved through the box body and the cover. When PVC films of different thicknesses need to be fixed and wound on the support tube, the structure lacks corresponding limiting components, and the PVC film cannot be fixed on the support tube, which can easily cause the PVC film to spread out and entangle with each other in the box, making it inconvenient to use.

[0005] It can be seen from this that the existing low-temperature resistant PVC film does not have the function of being wound and fixed on a roll, and it is necessary to improve the existing deficiencies and provide a function that can be wound and fixed on a roll. Utility Model Content

[0006] The purpose of the present invention is to provide a low-temperature resistant PVC film to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The utility model is a low-temperature resistant PVC film, comprising a fixed structure and a film roll assembly, wherein the film roll assembly is installed on the inner wall of the fixed structure, the film roll assembly comprises a low-temperature resistant PVC film, the low-temperature resistant PVC film comprises a heat-resistant layer, a high-toughness layer is provided at the bottom of the heat-resistant layer, and a waterproof layer is provided at the bottom of the high-toughness layer, the fixed structure comprises a dustproof box, two positioning frames are provided inside the dustproof box, a card slot is provided at the top of the two positioning frames, a mounting plate is plugged into the inner wall of the card slot, bolts are installed on the inner walls of both sides of the mounting plate, the bottom ends of the bolts are threadedly connected to the bottom inner wall of the card slot, a rotating block is threadedly connected to the inner wall of the mounting plate, and a limiting frame is installed at the bottom end of the rotating block. The purpose of this arrangement is that the heat-resistant layer makes the upper surface of the low-temperature resistant PVC film resistant to high temperatures, the high-toughness layer makes it convenient to use the low-temperature resistant PVC film for pulling and deformation, and the waterproof layer makes the lower surface of the low-temperature resistant PVC film waterproof and not affected by water vapor. During the use of the low-temperature resistant PVC film, the low-temperature resistant PVC film is wound on the outer walls of the two rolls, and the two rolls are fixed to parallel by two positioning frames. The adjustable mouth is convenient for manually adjusting the low-temperature resistant PVC film between the two rolls to be flat, and the roll is supported by the insertion rod. The rotating shaft facilitates the roll to drive the low-temperature resistant PVC film to rotate, and the friction between the insertion rod and the positioning frame is increased by the retaining ring. The insertion rod is fixed by bolts, which is convenient for disassembly and replacement of the roll. The two positioning frames are fixed in the dustproof box by the fixing block, and the two sides of the mounting plate are limited by the card slot. It is located in the positioning frame, and the mounting plate and the two positioning frames are fixed by bolts. By rotating the rotating block in the mounting plate, the rotating block drives the limit frame to move downward to press the low-temperature resistant PVC film on the roll. The two ends of the limit frame fit with the two sides of the roll, which can effectively fix the two sides of the low-temperature resistant PVC film. When the low-temperature resistant PVC film on one side is fixed on the roll, the low-temperature resistant PVC film on the other roll is also affected and fixed. When the low-temperature resistant PVC film needs to be used, the two rolls rotate to drive the low-temperature resistant PVC film to be discharged from the film outlet slot, and the opening and closing cover is used to facilitate the filling and use of the low-temperature resistant PVC film inside the device. The dustproof box and the opening and closing cover cooperate to process the low-temperature resistant PVC film to be sealed on all sides to achieve a dustproof effect, thereby improving the overall quality of the low-temperature resistant PVC film when used.

[0009] Furthermore, the two slots are provided with insert rods mounted on the outer walls of both sides of the bottom, with reels sleeved on the outer sides of the insert rods. Rotating shafts are mounted on the inner walls of both sides of the reels. This arrangement allows the reels to rotate the low-temperature resistant PVC film during use. When the low-temperature resistant PVC film is needed, the two reels rotate to discharge the low-temperature resistant PVC film from the film discharging slot.

[0010] Furthermore, a retaining ring is provided on the side of the rotating shaft near the slot, and the retaining ring is sleeved on the insertion rod. The purpose of this arrangement is to support the roll of the low-temperature resistant PVC film through the insertion rod during use, and to increase the friction between the insertion rod and the positioning frame through the retaining ring.

[0011] Furthermore, bolts are threaded onto the inner walls of both ends of the rod, which are then engaged with the inner walls of the two positioning brackets. The outer walls of the two positioning brackets each feature a set of adjustable openings. This allows the rod to be fixed with bolts during use, facilitating the removal and replacement of the reels. The adjustable openings also allow for manual adjustment of the film between the two reels until it is flat.

[0012] Furthermore, the two positioning frames are provided with fixing blocks on the outside, which are welded to the inner walls of the dustproof box on both sides. A film discharge groove is provided on the outer wall of the bottom side of the dustproof box. This arrangement is intended to ensure that when the low-temperature resistant PVC film is used, the two positioning frames are fixed in the dustproof box by the fixing blocks. When the low-temperature resistant PVC film is needed, the two reels rotate to drive the low-temperature resistant PVC film out of the film discharge groove.

[0013] Furthermore, the dustproof box is topped with an opening and closing cover, and the outer walls of the two reels are wrapped with a low-temperature-resistant PVC film, which is located on the outer wall of the retaining frame. This arrangement is intended to ensure that during use, the low-temperature-resistant PVC film is wrapped around the outer walls of the two reels. By rotating the rotating block within the mounting plate, the rotating block drives the retaining frame downward to press the low-temperature-resistant PVC film on the reels. The ends of the retaining frame engage with the sides of the reels, effectively securing the two sides of the low-temperature-resistant PVC film.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model is provided with a reel, a rotating block and a limit frame. By rotating the rotating block in the mounting plate, the rotating block drives the limit frame to move downward to press the low-temperature resistant PVC film on the reel. The two ends of the limit frame fit with the two sides of the reel, which can effectively fix the two sides of the low-temperature resistant PVC film. When the low-temperature resistant PVC film on one side is fixed on the reel, the low-temperature resistant PVC film on the other reel is also affected and fixed. This structure can adapt to low-temperature resistant PVC films of different thicknesses, thereby improving the flexibility of the device.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fixed structure section of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal split structure of the roll film component of the utility model;

[0021] Figure 4 This is a schematic diagram of the partially disassembled structure of the roll film component of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the low-temperature resistant PVC film of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] In the figure: 1. Fixed structure; 101. Dustproof box; 102. Opening and closing cover; 103. Film outlet groove; 104. Fixed block; 105. Positioning frame; 106. Adjustable mouth; 107. Card slot; 2. Film roll assembly; 200. Bolt; 201. Mounting plate; 202. Insert rod; 203. Reel; 204. Rotating shaft; 205. Retaining ring; 206. Rotating block; 207. Limiting frame; 208. Low-temperature resistant PVC film; 2081. Heat-resistant layer; 2082. High-toughness layer; 2083. Waterproof layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0026] See also Figure 1 - Figure 5As shown, the utility model is a low-temperature resistant PVC film, including a fixed structure 1 and a film roll assembly 2, wherein the film roll assembly 2 is installed on the inner wall of the fixed structure 1, the fixed structure 1 includes a dustproof box 101, the film roll assembly 2 includes a low-temperature resistant PVC film 208, the low-temperature resistant PVC film 208 includes a heat-resistant layer 2081, the bottom of the heat-resistant layer 2081 is provided with a high-toughness layer 2082, and the bottom of the high-toughness layer 2082 is provided with a waterproof layer 2083, and two positioning frames 105 are provided inside the dustproof box 101. The tops of the two positioning frames 105 are provided with a card slot 107, and a mounting plate 201 is inserted into the inner wall of the card slot 107. Bolts 200 are installed on the inner walls of both sides of the mounting plate 201, and the bottom end of the bolt 200 is threadedly connected to the bottom inner wall of the card slot 107. A rotating block 206 is threadedly connected to the inner wall of the mounting plate 201, and a limiting frame 207 is installed at the bottom end of the rotating block 206. The purpose of this arrangement is that during the use of the low-temperature resistant PVC film 208, the heat-resistant layer 2081 makes the upper surface of the low-temperature resistant PVC film 208 resistant to high temperatures, the high-toughness layer 2082 facilitates the pulling and deformation of the low-temperature resistant PVC film 208, and the waterproof layer 2083 makes the lower surface of the low-temperature resistant PVC film 208 waterproof and not affected by water vapor. The low-temperature resistant PVC film 208 is wound on the outer walls of the two reels 203, and the two reels 203 are fixed to be parallel through the two positioning frames 105. The adjustable mouth 106 is convenient for manually adjusting the low-temperature resistant PVC film 208 between the two reels 203 to be flat, and the reel 203 is supported by the insertion rod 202. The rotating shaft 204 facilitates the reel 203 to drive the low-temperature resistant PVC film 208 to rotate, and the friction between the insertion rod 202 and the positioning frame 105 is increased by the retaining ring 205. The insertion rod 202 is fixed by the bolt 200 to facilitate the disassembly and replacement of the reel 203. The two positioning frames 105 are fixed in the dustproof box 101 through the fixing block 104, and the two sides of the mounting plate 201 are limited in the positioning frame 105 through the card slot 107. The mounting plate 201 is fixed to the two positioning frames 105 by the bolts 200. By rotating the rotating block 20 in the mounting plate 201 6. The rotating block 206 drives the limiting frame 207 to move downward to press the low-temperature resistant PVC film 208 on the roll 203. The two ends of the limiting frame 207 fit with the two sides of the roll 203, and the two sides of the low-temperature resistant PVC film 208 can be effectively fixed. When the low-temperature resistant PVC film 208 on one side is fixed on the roll 203, the low-temperature resistant PVC film 208 on the other roll 203 is also affected and fixed. When the low-temperature resistant PVC film 208 needs to be used, the two rolls 203 rotate to drive the low-temperature resistant PVC film 208 to be discharged from the film outlet groove 103, and the low-temperature resistant PVC film 208 inside the device is conveniently filled and used through the opening and closing cover 102. The dustproof box 101 and the opening and closing cover 102 cooperate to process the low-temperature resistant PVC film 208 to be sealed on all sides to achieve a dustproof effect, thereby improving the overall quality of the low-temperature resistant PVC film 208 when in use.

[0027] Insertion rods 202 are mounted on the outer walls of both sides of the bottom of the two slots 107. Rollers 203 are sleeved on the outer sides of the insertion rods 202. Rotating shafts 204 are mounted on the inner walls of both sides of the rolls 203. This arrangement allows the rolls 203 to rotate the low-temperature resistant PVC film 208 during use. When the low-temperature resistant PVC film 208 is needed, the two rolls 203 rotate to discharge the low-temperature resistant PVC film 208 from the film outlet slot 103.

[0028] A retaining ring 205 is provided on the side of the rotating shaft 204 near the card slot 107, and the retaining ring 205 is sleeved on the insertion rod 202. The purpose of this arrangement is that when the low-temperature resistant PVC film 208 is in use, the roll 203 is supported by the insertion rod 202, and the retaining ring 205 increases the friction between the insertion rod 202 and the positioning frame 105.

[0029] Bolts 200 are threaded onto the inner walls of both ends of the rod 202. These bolts 200 engage the inner walls of the two positioning brackets 105. The outer walls of the two positioning brackets 105 each have a set of adjustable openings 106. This arrangement allows the rod 202 to be secured with the bolts 200 during use, facilitating assembly and disassembly of the reel 203. The adjustable openings 106 facilitate manual adjustment of the low-temperature resistant PVC film 208 between the two reels 203 until it is flat.

[0030] The two positioning frames 105 are provided with fixing blocks 104 on the outside, which are welded to the inner walls of the dustproof box 101 on both sides. A film discharge groove 103 is provided on the outer wall of the bottom side of the dustproof box 101. The purpose of this arrangement is that when the low-temperature resistant PVC film 208 is in use, the two positioning frames 105 are fixed in the dustproof box 101 by the fixing blocks 104. When the low-temperature resistant PVC film 208 is needed, the two reels 203 rotate to drive the low-temperature resistant PVC film 208 out of the film discharge groove 103.

[0031] The dustproof box 101 is topped with an opening and closing cover 102. A low-temperature-resistant PVC film 208 is wrapped around the outer walls of the two reels 203, and the low-temperature-resistant PVC film 208 is located on the outer wall of a retaining frame 207. This arrangement allows the low-temperature-resistant PVC film 208 to be wound around the outer walls of the two reels 203 during use. By rotating the rotating block 206 within the mounting plate 201, the rotating block 206 drives the retaining frame 207 downward to press the low-temperature-resistant PVC film 208 on the reels 203. The ends of the retaining frame 207 engage with the sides of the reels 203, effectively securing the two sides of the low-temperature-resistant PVC film 208.

[0032] When in use, the low-temperature resistant PVC film 208 is wound on the outer walls of the two rolls 203, and the two rolls 203 are fixed to parallel by the two positioning frames 105. The adjustable mouth 106 is convenient for manually adjusting the low-temperature resistant PVC film 208 between the two rolls 203 to be flat, and the roll 203 is supported by the insertion rod 202, and the rotating shaft 204 is convenient for the roll 203 to drive the low-temperature resistant PVC film 208 to rotate, and the friction between the insertion rod 202 and the positioning frame 105 is increased by the retaining ring 205. The insertion rod 202 is fixed by the bolt 200, which is convenient for disassembly and replacement of the roll 203. The two positioning frames 105 are fixed in the dustproof box 101 by the fixing block 104, and the two sides of the mounting plate 201 are limited in the positioning frame 105 by the card slot 107. The mounting plate 201 is fixed to the two positioning frames 105 by the bolts 200. The rotating block 206 in the mounting plate 201 drives the limiting frame 207 to move downward to press the low-temperature resistant PVC film 208 on the roll 203. The two ends of the limiting frame 207 fit with the two sides of the roll 203, which can effectively fix the two sides of the low-temperature resistant PVC film 208. When the low-temperature resistant PVC film 208 on one side is fixed on the roll 203, the low-temperature resistant PVC film 208 on the other roll 203 is also affected and fixed. When the low-temperature resistant PVC film 208 needs to be used, the two rolls 203 rotate to drive the low-temperature resistant PVC film 208 to be discharged from the film outlet groove 103, and the low-temperature resistant PVC film 208 inside the device is conveniently filled and used through the opening and closing cover 102. The dustproof box 101 and the opening and closing cover 102 cooperate to process the low-temperature resistant PVC film 208 to be sealed on all sides, achieving a dustproof effect, thereby improving the overall quality of the low-temperature resistant PVC film 208 when in use.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-temperature resistant PVC film comprising a fixed structure (1) and a film roll assembly (2), wherein the film roll assembly (2) is mounted on the inner wall of the fixed structure (1), and is characterized in that: The roll film assembly (2) comprises a low-temperature resistant PVC film (208), the low-temperature resistant PVC film (208) comprises a heat-resistant layer (2081), a high-toughness layer (2082) is provided at the bottom of the heat-resistant layer (2081), and a waterproof layer (2083) is provided at the bottom of the high-toughness layer (2082); The fixing structure (1) comprises a dustproof box (101), two positioning frames (105) are provided inside the dustproof box (101), the top ends of the two positioning frames (105) are provided with a card slot (107), a mounting plate (201) is plugged into the inner wall of the card slot (107), bolts (200) are installed on the inner walls of both sides of the mounting plate (201), the bottom ends of the bolts (200) are threadedly connected to the bottom inner wall of the card slot (107), a rotating block (206) is threadedly connected to the inner wall of the mounting plate (201), and a limiting frame (207) is installed on the bottom end of the rotating block (206).

2. The low-temperature resistant PVC film according to claim 1, characterized in that: Insertion rods (202) are respectively installed on the outer walls on both sides of the bottom of the two slots (107), a reel (203) is sleeved on the outside of the insertion rods (202), and a rotating shaft (204) is installed on the inner walls on both sides of the reel (203).

3. The low-temperature resistant PVC film according to claim 2, characterized in that: A retaining ring (205) is provided on one side of the rotating shaft (204) close to the slot (107), and the retaining ring (205) is sleeved on the insertion rod (202).

4. The low-temperature resistant PVC film according to claim 2, characterized in that: Bolts (200) are threadedly connected to the inner walls of both ends of the insertion rod (202), and the bolts (200) are clamped on the inner walls of two positioning frames (105). A set of adjustable openings (106) are respectively opened on the outer walls of the two positioning frames (105).

5. The low-temperature resistant PVC film according to claim 1, characterized in that: A fixing block (104) is provided on the outside of the two positioning frames (105), and the fixing block (104) is welded to the inner walls on both sides of the dustproof box (101). A film outlet groove (103) is provided on the outer wall on one side of the bottom of the dustproof box (101).

6. The low-temperature resistant PVC film according to claim 2, characterized in that: An opening and closing cover (102) is installed on the top of the dustproof box (101), and the low-temperature resistant PVC film (208) is wound on the outer walls of the two reels (203). The low-temperature resistant PVC film (208) is located on the outer wall of the limiting frame (207).

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