Calender for PVC film production

Abstract

The utility model provides a calender for PVC (polyvinyl chloride) film production, which comprises a rack, and a conveying mechanism for conveying a PVC film and a tension-adjustable calendering mechanism for calendering the PVC film on the conveying mechanism are rotatably arranged on the rack. According to the utility model, the tension of the PVC film can be conveniently and quickly adjusted through the tension-adjustable calendering mechanism for calendering the PVC film on the transmission mechanism, so that the problems that the thickness of the PVC film wound on the outer wall of the winding roller is gradually increased, the angle of the film to be wound is continuously changed, and when the angle is changed to a certain degree, the PVC film cannot be wound on the outer wall of the winding roller are solved. The tension of the film to be wound is difficult to be constant, so that the tightness of the film wound by a winding roller is different, and the film is easy to wrinkle during winding.

Description

Technical Field

[0001] The utility model relates to the technical field of flattening and calendering equipment, and particularly relates to a calender for producing PVC films. Background Art

[0002] A calender is a machine composed of two or more rollers that press and spread materials such as rubber, silica gel, silicone rubber, phase change materials, PTFE, or plastics into films of a certain thickness and surface shape at a certain temperature, and can apply rubber to fiber cord fabric or steel cord fabric; a plastic calender is mainly a processing machine used in the production of various plastic films and the manufacture of PVC calendered artificial leather products.

[0003] During the production process of PVC films, a plastic calender is used to calender the material, and then the calendered PVC film is cooled and wound up after cooling. When winding up, the thickness of the PVC film wound around the outer wall of the winding roller gradually increases, and the angle of the film to be wound is also constantly changing. When the angle changes to a certain extent, the tension of the film to be wound is difficult to be constant, resulting in uneven tightness of the film wound by the winding roller, and causing wrinkles to easily occur when the film is wound up. Summary of the Utility Model

[0004] In view of this, the utility model provides a calender for producing PVC films, which can conveniently and quickly adjust the tension of the PVC film through a calendering mechanism with adjustable tension for calendering the PVC film on the transmission mechanism, and solves the problem that when winding up, the thickness of the PVC film wound around the outer wall of the winding roller gradually increases, the angle of the film to be wound is also constantly changing, when the angle changes to a certain extent, the tension of the film to be wound is difficult to be constant, resulting in uneven tightness of the film wound by the winding roller, and causing wrinkles to easily occur when the film is wound up.

[0005] To solve the above technical problems, the utility model provides a calender for producing PVC films, which includes a frame. On the frame, a transmission mechanism for conveying the PVC film and a calendering mechanism with adjustable tension for calendering the PVC film on the transmission mechanism are rotatably arranged. The utility model can conveniently and quickly adjust the tension of the PVC film through a calendering mechanism with adjustable tension for calendering the PVC film on the transmission mechanism, and solves the problem that when winding up, the thickness of the PVC film wound around the outer wall of the winding roller gradually increases, the angle of the film to be wound is also constantly changing, when the angle changes to a certain extent, the tension of the film to be wound is difficult to be constant, resulting in uneven tightness of the film wound by the winding roller, and causing wrinkles to easily occur when the film is wound up.

[0006] The calendering mechanism includes vertical plates arranged on the front and rear sides of the frame. Vertical grooves are formed on the vertical plates. Calendering roller groups with adjustable tension for calendering the PVC film on the conveying mechanism are rotatably arranged on the vertical plates on the upper and lower sides of the conveying mechanism. Each calendering roller group includes pressure rollers located on the left and right sides of the vertical groove and rotatably arranged on the vertical plate. Positive and negative thread guide railslides are arranged in the vertical grooves on the front and rear sides of the frame. Tension rollers are respectively arranged on the sliders of the positive and negative thread guide railslides. A triangular structure is formed between the tension rollers and the two pressure rollers. A fixed block is arranged on the horizontal line where the geometric center of the slide rail of the positive and negative thread guide railslide is located. A through hole larger than the diameter of the circle where the external thread of the lead screw of the positive and negative thread guide railslide is located is formed on the fixed block. A winding roller for winding the PVC film is rotatably arranged on the fixed block. In this utility model, the rotation of the output shaft of the drive motor of the positive and negative thread guide railslide can drive the lead screw of the positive and negative thread guide railslide to rotate together. Coupled with the threaded connection between the slider of the positive and negative thread guide railslide and the lead screw of the positive and negative thread guide railslide and the threaded connection between the slide rail of the positive and negative thread guide railslide and the slider of the positive and negative thread guide railslide, the rotation of the lead screw of the positive and negative thread guide railslide will drive the slider of the positive and negative thread guide railslide to drive the tension roller to move towards each other along the slide rail of the linear slide, thereby realizing the calendering operation on the PVC film on the conveying mechanism, which is more convenient and efficient.

[0007] The conveying mechanism includes rotating rollers rotatably arranged on the left and right sides of the frame. A conveyor belt is arranged on the outer side of the rotating rollers. The rotating rollers are driven to rotate by a motor. In this utility model, the rotation of the rotating rollers can drive the conveyor belt to rotate together, thereby realizing the conveying and winding operation of the PVC film pre-wound on the winding roller, which is more convenient.

[0008] A retaining roller for limiting the PVC film is rotatably arranged on the vertical plate. A protective cover is arranged on the upper part of the calendering roller group. Through the combined action of the retaining roller and the protective cover, the PVC film can be effectively limited and protected, and the operation is safer and more convenient.

[0009] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0010] 1. In this utility model, the calendering mechanism with adjustable tension for calendering the PVC film on the transmission mechanism can conveniently and quickly adjust the tension of the PVC film, solving the problem that when winding, the thickness of the PVC film wound on the outer wall of the winding roller gradually increases, and the angle of the film to be wound is also constantly changing. When the angle changes to a certain extent, it is difficult to keep the tension of the film to be wound constant, resulting in uneven tightness of the film wound by the winding roller and causing wrinkles easily when the film is wound.

[0011] 2. This utility model can drive the screw rod of the positive and negative thread guide rail slide table to rotate together by the rotation of the output shaft of the driving motor of the positive and negative thread guide rail slide table. Coupled with the threaded connection between the slider of the positive and negative thread guide rail slide table and the screw rod of the positive and negative thread guide rail slide table, and the threaded connection between the slide rail of the positive and negative thread guide rail slide table and the slider of the positive and negative thread guide rail slide table, the rotation of the screw rod of the positive and negative thread guide rail slide table will drive the slider of the positive and negative thread guide rail slide table to drive the tension roller to move towards each other along the slide rail of the linear slide table, thereby realizing the calendering operation on the PVC film on the conveying mechanism, which is more convenient and efficient.

[0012] 3. This utility model can drive the conveyor belt to rotate together by the rotation of the rotating roller, thereby realizing the conveying and winding operation of the PVC film pre-wound on the winding roller, which is more convenient.

[0013] 4. This utility model can effectively limit and protect the PVC film through the combined action of the retaining roller and the protective cover, and the operation is safer and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the calender for producing PVC film of this utility model;

[0015] Figure 2 It is a schematic structural diagram of the calender for producing PVC film of this utility model without a protective cover;

[0016] Figure 3 It is a front view of the calender for producing PVC film of this utility model;

[0017] Figure 4 It is a side view of the calender for producing PVC film of this utility model.

[0018] Description of the reference numerals: 100, frame; 200, conveying mechanism; 201, rotating roller; 202, conveyor belt; 300, calendering mechanism; 310, vertical plate; 320, vertical groove; 330, calendering roller group; 331, pressure roller; 332, positive and negative thread guide rail slide table; 333, tension roller; 334, fixed block; 335, winding roller; 400, retaining roller; 500, protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions and advantages of the embodiments of this utility model clearer, the following will combine the appended drawings of the embodiments of this utility model Figures 1-4 , and clearly and completely describe the technical solutions of the embodiments of this utility model. Obviously, the described embodiments are part of the embodiments of this utility model, rather than all of the embodiments. Based on the described embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by this utility model.

[0020] As shown Figures 1-4 : This embodiment provides a calender for producing PVC films, which includes a frame 100. Rotatably arranged on the frame 100 are a conveying mechanism 200 for conveying the PVC film and a calendering mechanism 300 with adjustable tension for calendering the PVC film on the conveying mechanism. The present utility model can conveniently and quickly adjust the tension of the PVC film through the calendering mechanism 300 with adjustable tension for calendering the PVC film on the conveying mechanism, solving the problem that when winding, the thickness of the PVC film wound on the outer wall of the winding roller 335 gradually increases, and the angle of the film to be wound is also constantly changing. When the angle changes to a certain extent, it is difficult to keep the tension of the film to be wound constant, resulting in uneven tightness of the film wound by the winding roller 335 and causing wrinkles to easily occur when the film is wound.

[0021] According to an embodiment of the present utility model, as Figures 1-4 shown, the calendering mechanism 300 includes vertical plates 310 arranged on the front and rear sides of the frame 100. Vertical grooves 320 are formed on the vertical plates 310. On the vertical plates 310 located on the upper and lower sides of the conveying mechanism 200, calendering roller groups 330 with adjustable tension for calendering the PVC film on the conveying mechanism 200 are rotatably arranged. Each calendering roller group 330 includes pressure rollers 331 located on the left and right sides of the vertical groove 320 and rotatably arranged on the vertical plates 310. On the front and rear sides of the frame 100 and within the vertical groove 320, there are left - right thread guide railslides 332. Tension rollers 333 are respectively arranged on the sliders of the left - right thread guide railslides 332. A triangular structure is formed between the tension rollers 333 and the two pressure rollers 331. On the horizontal line where the geometric center of the slide rail of the left - right thread guide railslide 332 is located, there is a fixed block 334. A through - hole larger than the diameter of the circle where the external thread of the lead screw of the left - right thread guide railslide 332 is located is formed on the fixed block 334. A winding roller 335 for winding the PVC film is rotatably arranged on the fixed block 334. The present utility model can drive the lead screw of the left - right thread guide railslide 332 to rotate together by the rotation of the output shaft of the drive motor of the left - right thread guide railslide 332. Coupled with the threaded connection between the slider of the left - right thread guide railslide 332 and the lead screw of the left - right thread guide railslide 332 and the threaded connection between the slide rail of the left - right thread guide railslide 332 and the slider of the left - right thread guide railslide 332, the rotation of the lead screw of the left - right thread guide railslide 332 will drive the slider of the left - right thread guide railslide 332 to drive the tension roller 333 to move towards each other along the slide rail of the linear slide, thereby realizing the calendering operation on the PVC film of the conveying mechanism 200, which is more convenient and efficient.

[0022] According to another embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 3As shown, the conveying mechanism 200 includes rotating rollers 201 rotatably arranged on the left and right sides of the frame 100. A conveyor belt 202 is arranged on the outer side of the rollers 201. The rollers 201 are driven to rotate by a motor. In the present utility model, the rotation of the rollers 201 can drive the conveyor belt 202 to rotate together, thereby realizing the conveying and winding operation of the PVC film pre-wound on the winding roller 335, which is more convenient.

[0023] According to another embodiment of the present utility model, as Figure 1 and Figure 4 shown, a retaining roller 400 for limiting the PVC film is rotatably arranged on the vertical plate 310, and a protective cover 500 is arranged above the calender roll group 330. Through the combined action of the retaining roller 400 and the protective cover 500, the PVC film can be effectively limited and protected, and the operation is safer and more convenient.

[0024] The usage method of the present utility model:

[0025] First of all, it should be clear that the calendering mechanism 300 involved in the present utility model is mainly used for the calendering operation of various films during the winding process. Here, it should be clear that the transmission speed of the conveyor belt 202 is adapted to the rotation speed of the driving motor. The specific implementation method is to calculate the winding thickness of the winding roller 335 according to the diameter of the winding roller 335 and the rotation speed of the conveyor belt 202, and then calculate the rotation speed of the output shaft of the driving motor according to the winding speed to be adapted to the winding speed. Here, the existing calculation formula S = V * T can be fully utilized for calculation. The present utility model takes the PVC film as an example to elaborate on its usage method in detail. When calendering the PVC film is required, the PVC film is manually pre-laid and adhered to the winding roller 335 in advance, and then the output shaft of the motor is started to drive the roller 201 of the conveying mechanism 200 to drive the conveyor belt 202 to rotate. During the winding process, the output shaft of the driving motor of the positive and negative thread guide rail slide is started to rotate. The rotation of the output shaft of the driving motor of the positive and negative thread guide rail slide 332 drives the lead screw of the positive and negative thread guide rail slide 332 to rotate together. Coupled with the threaded connection between the slider of the positive and negative thread guide rail slide 332 and the lead screw of the positive and negative thread guide rail slide 332 and the threaded connection between the slide rail of the positive and negative thread guide rail slide 332 and the slider of the positive and negative thread guide rail slide 332, the rotation of the lead screw of the positive and negative thread guide rail slide 332 will drive the slider of the positive and negative thread guide rail slide 332 to drive the tension roller 333 to move towards each other along the slide rail of the linear slide, thereby realizing the calendering operation on the PVC film on the conveying mechanism 200. The present utility model can conveniently and quickly adjust the tension of the PVC film through the calendering mechanism 300 with adjustable tension for calendering the PVC film on the transmission mechanism, solving the problem that during winding, the thickness of the PVC film wound on the outer wall of the winding roller 335 gradually increases, and the angle of the film to be wound is also constantly changing. When the angle changes to a certain extent, the tension of the film to be wound is difficult to be constant, resulting in uneven tightness of the film wound by the winding roller 335 and easy generation of wrinkles when the film is wound.

[0026] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A calender for producing PVC films, comprising a frame (100), characterized in that: A conveying mechanism (200) for conveying a PVC film and a calendering mechanism (300) with adjustable tension for calendering the PVC film on the conveying mechanism are rotatably arranged on the frame (100). The calendering mechanism (300) includes vertical plates (310) arranged on the front and rear sides of the frame (100). Vertical grooves (320) are formed in the vertical plates (310). Calendering roll groups (330) with adjustable tension for calendering the PVC film on the conveying mechanism (200) are rotatably arranged on the vertical plates (310) on the upper and lower sides of the conveying mechanism (200). Each calendering roll group (330) includes pressure rolls (331) arranged on the left and right sides of the vertical groove (320) and rotatably arranged on the vertical plates (310). Positive and negative thread guide slides (332) are arranged in the vertical grooves (320) on the front and rear sides of the frame (100). Tension rolls (333) are respectively arranged on the sliders of the positive and negative thread guide slides (332). A fixed block (334) is arranged on the horizontal line where the geometric center of the slide rail of the positive and negative thread guide slide (332) is located. A winding roll (335) for winding the PVC film is rotatably arranged on the fixed block (334).

2. The calender for producing PVC films according to claim 1, wherein: A triangular structure is formed between the tension roll (333) and the two pressure rolls (331).

3. The calender for producing PVC films according to claim 2, characterized in that: The conveying mechanism (200) includes rotating rollers (201) arranged on the left and right sides of the frame (100), and a conveyor belt (202) is arranged on the outer side of the rotating rollers (201).

4. The calender for producing PVC films according to claim 3, characterized in that: A retaining roll (400) for limiting the PVC film is rotatably arranged on the vertical plate (310).

5. The calender for producing PVC films according to claim 4, characterized in that: A protective cover (500) is arranged above the calendering roll group (330).

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