A PVC film surface leveling device

Abstract

The utility model discloses a PVC film surface leveling device, including a conveying device, two parallel brackets are arranged on both sides of the conveying device, a take-up roller is arranged at the head end between the brackets, two mirror rollers are arranged in sequence behind the take-up roller, a plurality of cooling rollers are arranged behind the mirror roller, a wheel roller is arranged behind the cooling roller, a flattening roller is arranged behind the wheel roller, and an idler roller is arranged behind the flattening roller, a winding device is arranged at the rear side of the conveying device, and a tensioning device is arranged between the winding device and the conveying device. The beneficial effects of the utility model are: the surface defects that may be generated during the processing of the PVC film are reduced by calendering with the mirror roller, so that the flatness of the PVC is further improved; the PVC is further unfolded by further leveling of the subsequent wheel roller and the fine thread of the flattening roller, the shrinkage problem caused by the cooling of the cooling roller is reduced, the flatness quality of the PVC film is guaranteed, and the winding quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to PVC film processing, in particular to a PVC film surface leveling device. Background Art

[0002] PVC plastic, also known as polyvinyl chloride plastic, is made of vinyl chloride monomers and is one of the commonly used thermoplastics. Its trade name is abbreviated as chlorine plastic. Polyvinyl chloride resin is a hard thermoplastic substance, its decomposition temperature is very close to the plasticizing temperature, and its mechanical strength is poor. In the process of rolling up the common PVC plastic film, the hot film will cool down and cause the film to shrink. When rolling up, the film is too thin and light, which can easily lead to wrinkles in the process of rolling up, resulting in poor quality of plastic film rolling and affecting product quality. Utility Model Content

[0003] In view of the above shortcomings, the utility model adopts the following technical solutions:

[0004] A PVC film surface leveling device comprises a conveying device, two parallel brackets are arranged on both sides of the conveying device, a take-up roller is arranged at the head end between the brackets, two mirror rollers are arranged behind the take-up rollers in sequence, a plurality of cooling rollers are arranged behind the mirror rollers, a wheel roller is arranged behind the cooling rollers, a flattening roller is arranged behind the wheel rollers, an idler roller is arranged behind the flattening rollers, a winding device is arranged at the rear side of the conveying device, and a tensioning device is arranged between the winding device and the conveying device.

[0005] Furthermore, the winding device includes two support plates arranged in parallel, a support frame is provided between the bottoms of the support plates to connect them, a rotating seat is provided at the center position of the support plate, a telescopic column is provided in the rotating seat, a groove is provided at the top of the telescopic column, a winding roller is provided between the grooves, and a guide roller is provided between the support plates at the upper angle of the winding roller facing the conveying device.

[0006] Furthermore, a plurality of supporting legs are provided on the bottom side of the bracket, and the supporting legs are connected to a base frame provided at the bottom of the supporting plate.

[0007] Furthermore, the tensioning device includes the base frame, which is provided with a rotating shaft, both ends of the rotating shaft located on the inner side of the base frame are provided with fixed plates, a number of tensioning rollers are provided between the fixed plates, and both ends of the rotating shaft located on the outer side of the base frame are connected to rotating motors.

[0008] Furthermore, a plurality of rollers are arranged on the wheel roller, and the top height of the rollers is higher than that of the cooling roller and the leveling roller.

[0009] Furthermore, fine threads with opposite spiral directions are provided at both ends of the flattening roller, the spiral direction of the fine threads is relative to the direction of the wheel roller, the depth of the fine threads is 0.3 to 0.7 mm, and the pitch of the fine threads is 1 to 2 cm.

[0010] Furthermore, an inverted L-shaped bracket is provided on one side of the support plate adjacent to the tensioning device, and support rollers are provided on both side edges of the inverted L-shaped bracket.

[0011] The beneficial effects of the utility model are: 1. calendering by mirror rollers reduces surface defects such as dents or flaws that may be produced during the processing of PVC film, thereby improving the quality of PVC and further improving the flatness of PVC; 2. further flattening by subsequent wheel rollers and leveling rollers allows the PVC to be further unfolded, reducing the shrinkage problem caused by cooling of the cooling roller, ensuring the flatness of the PVC film, and further improving the winding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the conveying device of the utility model;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the winding device and the tensioning device of the utility model.

[0015] In the figure: 1-conveying device, 10-support leg, 11-bracket, 12-take-up roller, 13-mirror roller, 14-cooling roller, 15-wheel roller, 150-roller, 16-opening roller, 17-idle roller, 2-winding device, 20-inverted L-shaped bracket, 21-support plate, 210-support roller, 22-support frame, 23-rotating seat, 24-telescopic column, 25-winding roller, 26-guide roller, 3-tensioning device, 30-base frame, 31-rotating shaft, 32-fixed plate, 33-tensioning roller. DETAILED DESCRIPTION

[0016] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Combination Figure 1 As shown in the figure:

[0018] A PVC film surface leveling device comprises a conveying device 1, two parallel brackets 11 are arranged on both sides of the conveying device 1, a take-up roller 12 is arranged at the head end between the brackets 11 for taking up the film, two mirror rollers 13 are arranged in sequence behind the take-up roller 12 for calendering the film with residual heat to obtain a film with better surface quality, a plurality of cooling rollers 14 are arranged behind the mirror roller 13 for cooling the film, a wheel roller 15 is arranged behind the cooling roller 14 for preventing the cooled film from sticking, a flattening roller 16 is arranged behind the wheel roller 15 for further unfolding and leveling the film, an idler roller 17 is arranged behind the flattening roller 16 for cooperating with a tensioning device 3 to control the film tension, a winding device 2 is arranged at the rear side of the conveying device 1 for winding up the PVC film, and a tensioning device 3 is arranged between the winding device 2 and the conveying device 1 for controlling the film tension.

[0019] The winding device 2 includes two parallel support plates 21, and a support frame 22 is provided between the bottoms of the support plates 21 to connect them. A rotating seat 23 is provided at the center position of the support plate 21, and its rotation is controlled by a built-in or external motor. A telescopic column 24 is provided in the rotating seat 23, and the telescopic column can be retracted to operate the upper and lower winding rollers. A groove is provided at the top of the telescopic column 24, and the grooves cooperate with each other to fix the winding roller 25. A guide roller 26 is provided between the support plates 21 at the upper angle of the winding roller 25 facing the conveying device 1, which guides and provides relative tension by cooperating with the support roller.

[0020] A plurality of supporting legs 10 are provided at the bottom side of the bracket 11 for supporting. The supporting legs 10 are connected to a bottom frame 30 provided at the bottom of the supporting plate 21 for easy installation of the tensioning device.

[0021] The tensioning device 3 includes a base frame 30, on which a rotating shaft 31 is provided. Both ends of the rotating shaft 31 located on the inner side of the base frame 30 are provided with fixed plates 32, and a plurality of tensioning rollers 33 are provided between the fixed plates 32 for providing relative tension for the tensioning operation. Both ends of the rotating shaft 31 located on the outer side of the base frame 30 are connected to rotating motors for controlling the rotation of the rotating shaft 31.

[0022] A plurality of rollers 150 are provided on the wheel roller 15. The top height of the rollers 150 is higher than the cooling roller 14 and the leveling roller 16, and is used to lift the film to prevent adhesion.

[0023] Fine threads with opposite spiral directions are arranged at both ends of the flattening roller 16. The fine thread direction is relative to the roller 15. The fine thread depth is 0.3-0.7 mm, and the fine thread pitch is 1-2 cm. The fine threads prevent damage to the film surface and provide outward expansion force to flatten the film.

[0024] An inverted L-shaped bracket 20 is provided on one side of the support plate 21 adjacent to the tensioning device 3. Support rollers 210 are provided on both sides of the inverted L-shaped bracket 20 to cooperate with the guide rollers 26 to control the tension during winding and ensure the winding quality.

[0025] Working principle:

[0026] The film is guided to the mirror roller by the take-up roller. Due to the residual heat in the production process, the mirror roller further calenders it to obtain a film with better surface quality. The film is further cooled gradually by the cooling roller. The surface quality of the cooled film has stabilized. The film is lifted by the roller of the wheel roller to prevent the cooled film from sticking. The fine thread of the flattening roller rotates in the opposite direction of the film to make the film open outward to avoid the negative impact that may be caused by cooling and shrinking. The film is then transported to the tensioning device through the idler roller. The tension is controlled under the action of the rotating motor and the tension roller. The tension during winding is controlled by the support roller and the guide roller to ensure the winding quality. After winding is completed, the telescopic column retracts to lower the winding roller, and the material roll is transferred and replaced with a new winding roller by a trolley or other device.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PVC film surface leveling device, characterized in that: The invention comprises a conveying device (1), wherein two parallel brackets (11) are arranged on both sides of the conveying device (1), a take-up roller (12) is arranged at the head end between the brackets (11), two mirror rollers (13) are arranged in sequence behind the take-up roller (12), a plurality of cooling rollers (14) are arranged behind the mirror rollers (13), a wheel roller (15) is arranged behind the cooling roller (14), a flattening roller (16) is arranged behind the wheel roller (15), an idler roller (17) is arranged behind the flattening roller (16), a winding device (2) is arranged at the rear side of the conveying device (1), and a tensioning device (3) is arranged between the winding device (2) and the conveying device (1).

2. A PVC film surface leveling device according to claim 1, characterized in that: The winding device (2) comprises two support plates (21) arranged in parallel, a support frame (22) is provided between the bottoms of the support plates (21) and connected to each other, a rotating seat (23) is provided at the center of the support plate (21), a telescopic column (24) is provided inside the rotating seat (23), a groove is provided at the top of the telescopic column (24), a winding roller (25) is provided between the grooves, and a guide roller (26) is provided between the support plates (21) at the upper angle of the winding roller (25) facing the conveying device (1).

3. A PVC film surface leveling device according to claim 2, characterized in that: A plurality of support legs (10) are provided on the bottom side of the bracket (11), and the support legs (10) are connected to a bottom frame (30) provided on the bottom of the support plate (21).

4. A PVC film surface leveling device according to claim 3, characterized in that: The tensioning device (3) comprises the base frame (30), the base frame (30) is provided with a rotating shaft (31), both ends of the rotating shaft (31) located inside the base frame (30) are provided with fixing plates (32), a plurality of tensioning rollers (33) are provided between the fixing plates (32), and both ends of the rotating shaft (31) located outside the base frame (30) are connected to rotating motors.

5. A PVC film surface leveling device according to claim 4, characterized in that: A plurality of rollers (150) are arranged on the wheel roller (15), and the top height of the rollers (150) is higher than that of the cooling roller (14) and the flattening roller (16).

6. A PVC film surface leveling device according to claim 5, characterized in that: The two ends of the flattening roller (16) are provided with fine threads with opposite spiral directions, the spiral direction of the fine threads is relative to the direction of the wheel roller (15), the depth of the fine threads is 0.3-0.7 mm, and the pitch of the fine threads is 1-2 cm.

7. A PVC film surface leveling device according to claim 6, characterized in that: An inverted L-shaped bracket (20) is provided on one side of the support plate (21) adjacent to the tensioning device (3), and support rollers (210) are provided on both side edges of the inverted L-shaped bracket (20).

Images