Calendaring forming and post-processing equipment for producing low-thickness and wide-width PVC (polyvinyl chloride) film

Abstract

The utility model relates to the technical field of plastic forming equipment, in particular to calendaring forming and post-processing equipment for producing low-thickness and wide-width PVC (polyvinyl chloride) films, which comprises a feeding mechanism, a calendaring main machine, a guiding and separating warm smelting device, a widening device, a second warm smelting device and a cooling device, the feeding device is arranged above the calendaring main machine, the calendaring main machine is a four-roller inverted L-shaped calendaring main machine, and the cooling device is arranged above the calendaring main machine. The four-roller inverted-L-shaped calendaring main machine comprises four calendaring rollers, the width of the calendaring rollers is 2.5 m, the side, away from the feeding device, of the calendaring main machine is provided with a guiding and separating warm smelting device, the side, away from the calendaring main machine, of the guiding and separating warm smelting device is provided with a widening device, and the side, away from the first warm smelting device, of the widening device is provided with a second warm smelting device. A cooling device is arranged on the side, away from the widening device, of the second warm smelting device, the tail end of the cooling device is connected with a curling device, the devices are matched with one another, the PVC thin film with the low thickness and the wide width can be produced, and the maximum production width of the thin film can reach 4.5 m.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molding equipment, in particular to a calendering molding and post-processing equipment for producing low-thickness and wide-width PVC films. Background Art

[0002] With the widespread application of PVC film, its market size continues to expand, and product demand is also increasing. The market not only has a large demand for conventional products such as packaging film and crystal board, but also has a large demand for PVC film with a width of about 4.5m used as floor film. This specification has exceeded the production limit of traditional calendered film. The use of traditional calendering technology for production often results in quality problems such as large and uneven shrinkage, sticky film, uneven cross-section, and insufficient width, which makes it difficult to meet market demand. Utility Model Content

[0003] The purpose of the utility model is to provide a calendering and post-processing equipment for producing low-thickness and wide-width PVC films to solve the problems raised in the above-mentioned background technology.

[0004] A calendering and post-processing equipment for producing low-thickness and wide-width PVC film, comprising a feeding mechanism, a calendering main machine, a decoupling and warming device, a widening device, a second warming device and a cooling device, wherein the feeding mechanism is arranged above the calendering main machine, the calendering main machine is a four-roller inverted L-shaped calendering main machine, the four-roller inverted L-shaped calendering main machine comprises four calendering rollers, the width of the calendering rollers is 2.5 meters, the calendering main machine is provided with a decoupling and warming device on the side away from the feeding mechanism, the decoupling and warming device is provided with a widening device on the side away from the calendering main machine, the widening device is provided with a second warming device on the side away from the first warming device, and the second warming device is provided with a cooling device on the side away from the widening device.

[0005] Preferably, the deflection and warming device comprises six first warming rollers arranged in parallel, and any two adjacent first warming rollers rotate in opposite directions at the same speed.

[0006] Furthermore, the widening device includes a widening frame and two widening arms, the two ends of the widening frame are one high and one low, the two widening arms are arranged in an "eight" shape, the widening arms can be telescopic, the two ends of the widening arms are respectively slidably connected to the two ends of the widening frame, the two widening arms can be slidably adjusted to different angles, and the widening arms can rotate relative to the widening frame.

[0007] Furthermore, the widening arm includes two sliding support devices, which are slidably connected to the two ends of the widening frame respectively, and the two sliding support devices are commonly connected to two conveyor belts, the two conveyor belts are parallel and close to each other, and the two conveyor belts run synchronously in opposite directions to transport the film; the sliding support device includes a first driving motor, the first driving motor is slidably connected to the end of the widening frame through a sliding block, a first driving roller is fixedly connected to the output shaft of the first driving motor, and the conveyor belt is sleeved on the first driving roller, a sliding rod is provided on one side of the first driving motor, a connecting frame is slidably connected to the sliding rod, and an adjusting rod is slidably connected to the connecting frame, the adjusting rod is parallel to the sliding rod, and the adjusting rod is located above the sliding rod, one end of the adjusting rod is fixedly connected to the second driving motor, and the second driving roller is fixedly connected to the output shaft of the second driving motor, and the conveyor belts are all connected to the two first driving rollers and the two second conveying rollers in the two sliding support devices.

[0008] Furthermore, the widening device comprises a plurality of shaping nozzles, and the shaping nozzles are capable of spraying air.

[0009] Furthermore, the second warming and refining device includes eight second warming and refining rollers, and any two adjacent second warming and refining rollers rotate in opposite directions at the same speed.

[0010] Furthermore, the cooling device comprises a plurality of cooling rollers, and two adjacent cooling rollers rotate at the same speed and in opposite directions.

[0011] Furthermore, a winding device is provided on one side of the cooling device.

[0012] Compared with the prior art, the utility model has the following beneficial effects: since the utility model adopts the above technical solution, adopts a wide-body calendering main machine, and is additionally provided with a widening device, not only the initial width of the film on the calendering main machine is increased, but also the width of the final produced film can be greatly increased after the widening device is passed through, and the widening device is adjustable, and the widening range can be adjusted to produce films of different widths, with wide adaptability, and the quality of the subsequent widened film is guaranteed through the widening of the widening device and two temperature refining and shaping, especially the effect of improving the shrinkage rate of low-thickness films is obvious. The utility model has a simple structure and is easy to operate, and is suitable for producing products of different specifications and sizes, improving the production efficiency of the film and ensuring the production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall configuration of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the widening device in the utility model from a first viewing angle;

[0015] Figure 3 It is a schematic diagram of the stereoscopic structure of the widening device in the utility model from a second viewing angle.

[0016] In the figure: 1. feeding mechanism; 2. calendering main machine; 21. calendering roller; 3. deflection and warming device; 31. first warming roller; 4. widening device; 41. widening frame; 42. widening arm; 43. sliding support device; 431. first drive motor; 432. first drive roller; 433. sliding rod; 434. connecting frame; 435. adjusting rod; 436. second drive motor; 437. second drive roller; 44. conveyor belt; 45. shaping nozzle; 5. second warming device; 51. second warming roller; 6. cooling device; 61. cooling roller; 7. winding device; 71. winding roller; 8. film. DETAILED DESCRIPTION

[0017] The following will be combined with specific embodiments and attached Figure 1-3 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0018] A calendering and post-processing equipment for producing low-thickness and wide-width PVC film, comprising a feeding mechanism 1, which is a filtering extruder. The filtering extruder is a prior art. The material is extruded by the filtering extruder into a relatively soft columnar strip that is easy to shape and is fed to a calendering main machine 2.

[0019] The calendering main machine 2 is a four-roller inverted L-shaped calendering main machine, which includes four calendering rollers 21 arranged in an inverted L shape. The calendering main machine 2 is a prior art, but the difference is that a wider calendering roller 21 is used in the device. Two calendering rollers 21 are arranged side by side in the horizontal direction on the upper part of the calendering main machine 2, and two calendering rollers 21 are arranged below one of the calendering rollers 21. The film 8 embryo discharged from the self-filtering extruder is first calendered between the two calendering rollers 21 arranged side by side on the upper left and right, and then the film 8 embryo bypasses the two calendering rollers 21 below respectively. After three calenderings by the four calendering rollers 21, the film 8 embryo is extended to a width of nearly two and a half meters. A decoupling and warming device 3 is provided on one side of the calendering main machine 2.

[0020] The away warming device 3 is arranged on the side of the calendering main machine 2 away from the filtering extruder. The away warming device 3 includes six first warming rollers 31 arranged in parallel at the same height. The first warming roller 31 is the existing technology. The first warming roller 31 is provided with a heat preservation device, which can keep the first warming roller 31 at a higher temperature and can keep the film 8 rolled by the rolling main machine at a high temperature so as to further stretch the film 8. The film 8 passes around the six first warming rollers 31 in turn along the top of the first warming roller 31 at one end and extends from the lower end of the last first warming roller 31. The rotation speed of any two adjacent first warming rollers 31 is the same and the rotation direction is opposite to conform to the running direction of the film 8. A widening device 4 is provided on the side of the away warming device 3 away from the calendering main machine 2.

[0021] The widening device 4 includes a widening frame 41, one end of the widening frame 41 is high and the other end is low, and two widening arms 42 are arranged along the upper edge of the widening frame 41, and the two ends of the widening arms 42 are respectively slidably connected to the two ends of the widening frame 41, and the two widening arms 42 are arranged in an "eight" shape. The two widening arms 42 can be extended and retracted, and the opening angles of the two widening arms 42 can be adjusted by cooperating with the sliding connection, so that the same device can be adjusted to produce films 8 of different sizes.

[0022] The widening arm 42 includes two sliding support devices 43 and two conveyor belts 44. The two sliding support devices 43 are simultaneously connected to the two conveyor belts 44. The sliding support device 43 includes a first driving motor 431. The first driving motor 431 is slidably connected to the widening frame 41 through a slider. At the same time, the slider can rotate relative to the widening frame 41, thereby realizing that the entire sliding support device 43 can rotate. The first driving motor 431 is provided with a locking bolt that can limit and fix the first driving motor 431 and the widening frame 41. This method is a commonly used prior art and is not described in detail here. The output shaft of the first driving motor 431 is fixedly connected to a first driving roller 432. A conveyor belt 44 is sleeved on the first driving roller 432, and the conveyor belt 44 is driven by the first driving motor 431 through the first driving roller 432 to operate. A sliding rod 433 is fixedly connected to one side of the first driving motor 431, and a connecting frame 434 is sleeved on the sliding rod 433. The other end of the connecting frame 434 is slidably connected to an adjusting rod 435. The adjusting rod 435 and the sliding rod 433 are parallel to each other. The connecting frame 434 is slidably connected to the adjusting rod 435 and the sliding rod 433 respectively, so that the widening arm 43 as a whole can be telescopically adjusted to adapt to the widening range adjusted by the widening device. In response to different needs, the end of the adjusting rod 435 away from the connecting frame 434 is fixedly connected The second driving motor 436 has a second driving roller 437 fixedly connected to its output shaft. A sliding support device 43 is also slidably connected to the other end of the widening frame 41. The two sliding connection devices are symmetrically arranged. A conveyor belt 44 is transmission-connected to the two first driving rollers 432 of the two sliding connection devices. A conveyor belt 44 is transmission-connected to the two second driving rollers 437 of the two sliding connection devices. The two conveyor belts 44 are parallel to each other and close to each other. The two first driving motors 431 on the two conveyor belts 44 rotate in opposite directions at the same speed. The two second driving motors 436 also rotate in opposite directions synchronously, so that the two conveyor belts 44 can The film 8 is clamped and conveyed, and the two widening arms 42 are symmetrical on the left and right. The distance between the two sliding support devices 43 located at the low end is smaller than the distance between the two sliding support devices 43 located at the high end. The low ends of the two widening arms 42, that is, the narrow ends, are connected with the deflection and heating device 3. The film 8 that has been heated by the deflection and heating device 3 enters the widening device 4 along the low position of the narrow end. The two side edges of the film 8 are clamped and conveyed by the two widening arms 42. As the distance between the two widening arms 42 gradually increases, the film 8 is gradually widened. After being conveyed and stretched by the two widening arms 42, the film 8 is widened to achieve the production of non-standard sizes of the film 8 and meet the demand for the use of ultra-wide film 8.

[0023] The maximum opening distance between the ends of the two widening arms 42 at the high end can reach 4.5 meters, so that the utility model can produce ultra-wide films 8.

[0024] A plurality of shaping nozzles 45 are also provided on the widening frame 41. The shaping nozzle 45 is of prior art, and a hose is provided at the lower end thereof, and the angle can be freely adjusted. The shaping nozzle 45 is connected to a compressor and can eject high-speed gas, and can be used to properly cool and shape the film 8 being widened on the widening device 4, so as to prevent the film 8 in the middle of the widening device 4 from being suspended in the widening process. When the temperature is too high, the film 8 is easy to become plastic, and may sag under the action of gravity, causing the film 8 to deform, thereby affecting the quality of the widening forming of the film 8.

[0025] After being widened by the widening device 4, the film 8 will be discharged from the wide end of the widening device 4. The wide end of the widening device 4 is connected to the second warming device 5. The second warming device 5 includes eight second warming rollers 51. Two adjacent second warming rollers 51 rotate in opposite directions at the same speed. The film 8 passes around the eight second warming rollers 51 in turn. The rotation direction of the second warming rollers 51 is coordinated with the conveying direction of the film 8. The second warming roller 51 is also provided with a heat preservation device, which is a prior art. At the same time, the heat preservation device decreases along the running direction of the film 8, which can gradually reduce the temperature of the film 8 and make the temperature reduction process more linear, thereby preventing abnormal shrinkage of the film 8 and causing quality problems of the film 8.

[0026] After being output from the second warming device 5, the film 8 enters the cooling device 6 connected to the second warming device 5. A large number of cooling rollers 61 are provided in the cooling device 6. Adjacent cooling rollers 61 rotate in opposite directions at the same speed, following the conveying direction of the film 8. The cooling roller 61 is provided with a cooling device 6, which can cool the cooling roller 61. Similarly, the temperature of the cooling roller 61 decreases from high to low in a step-by-step manner along the conveying direction of the film 8, which can finally cool and shape the film 8. A winding device 7 is provided on the side of the cooling device 6 away from the second warming device 5. The winding device 7 is a prior art. The winding roller 71 is rotated by an electric motor to allow the cooled film 8 to be wound around the winding roller 71.

[0027] The utility model adds a widening device 4 to the traditional calendering technology. At the same time, a drawing and warming device 3 and a second warming device 5 are provided before and after the widening device 4 to warm the calendered and widened film 8 respectively, which can effectively improve the shrinkage of the low-thickness film 8 after calendering and widening, so that the width of the produced film 8 can reach four and a half meters, meeting the market demand for low-thickness and high-width film 8.

[0028] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0029] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0030] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A calendering and post-processing equipment for producing low-thickness and wide-width PVC films, characterized in that: It includes a feeding mechanism, a calendering main machine, a lead-away warming device, a widening device, a second warming device and a cooling device. The feeding mechanism is arranged above the calendering main machine. The calendering main machine is a four-roller inverted L-shaped calendering main machine. The four-roller inverted L-shaped calendering main machine includes four calendering rollers. The width of the calendering rollers is 2.5 meters. The calendering main machine is provided with a lead-away warming device on the side away from the feeding mechanism, the lead-away warming device is provided with a widening device on the side away from the calendering main machine, the widening device is provided with a second warming device on the side away from the first warming device, and the second warming device is provided with a cooling device on the side away from the widening device.

2. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 1, characterized in that: The decoupling and warming device comprises six first warming rollers arranged in parallel, and any two adjacent first warming rollers rotate in opposite directions at the same speed.

3. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 2, characterized in that: The widening device includes a widening frame and two widening arms. The two ends of the widening frame are one high and one low. The two widening arms are arranged in an "eight" shape. The widening arms can be telescopic. The two ends of the widening arms are respectively slidably connected to the two ends of the widening frame. The two widening arms can be slidably adjusted to different angles. The widening arms can rotate relative to the widening frame.

4. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 3, characterized in that: The widening arm includes two sliding support devices, which are slidably connected to the two ends of the widening frame respectively, and the two sliding support devices are commonly connected to two conveyor belts through transmission, the two conveyor belts are parallel and close to each other, and the two conveyor belts run synchronously in opposite directions to transport the film; the sliding support device includes a first driving motor, the first driving motor is slidably connected to the end of the widening frame through a sliding block, a first driving roller is fixedly connected to the output shaft of the first driving motor, and the conveyor belt is sleeved on the first driving roller, a sliding rod is provided on one side of the first driving motor, a connecting frame is slidably connected to the sliding rod, and an adjusting rod is slidably connected to the connecting frame, the adjusting rod is parallel to the sliding rod, and the adjusting rod is located above the sliding rod, one end of the adjusting rod is fixedly connected to the second driving motor, and the second driving roller is fixedly connected to the output shaft of the second driving motor, and the conveyor belts are all transmission-connected to the two first driving rollers and the two second conveying rollers in the two sliding support devices.

5. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 4, characterized in that: The widening device comprises a plurality of shaping nozzles, and the shaping nozzles are capable of spraying air.

6. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 5, characterized in that: The second warming and refining device includes eight second warming and refining rollers, and any two adjacent second warming and refining rollers rotate in opposite directions at the same speed.

7. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 6, characterized in that: The cooling device comprises a plurality of cooling rollers, and two adjacent cooling rollers rotate in opposite directions at the same speed.

8. The calendering and post-processing equipment for producing low-thickness and wide-width PVC films according to claim 7, characterized in that: A winding device is provided on one side of the cooling device.

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