A processing cooling device for PVC films

Abstract

This utility model discloses a PVC film processing cooling device, including a cooling water tank; the left and right ends of the cooling water tank are respectively connected to an inlet pipe and an outlet pipe; the cooling water tank is fixedly installed inside a mounting bracket, which includes a bottom frame, a front frame, and a rear frame, and a fixed roller group is fixedly installed between the top of the front frame and the rear frame, with a lifting roller group below the fixed roller group; the lifting roller group is located inside the cooling water tank; this utility model provides a water blowing device on the left side above the water tank, which can blow off the water droplets attached to the film surface, and at the same time, a blocking structure is set so that most of the blown-off water droplets fall back into the cooling water tank, thereby facilitating the recycling of these water droplets; at the same time, the cross-flow fan of the water blowing device can further cool the film.

Description

Technical Field

[0001] This utility model relates to the field of film processing, specifically a cooling device for processing PVC film. Background Technology

[0002] PVC's main component is polyvinyl chloride, which is a slightly yellowish, translucent, and glossy substance. Its transparency is better than polyethylene and polypropylene, but worse than polystyrene. Depending on the amount of additives used, it is classified as soft or rigid PVC. Soft PVC products are flexible and tough, with a sticky feel, while rigid PVC products are harder than low-density polyethylene. After extrusion and calendering processes, PVC films need to be rapidly cooled and set to ensure dimensional stability and surface quality.

[0003] For example, the patent with authorization announcement number CN222554022U discloses a cooling mechanism for processing PVC film. Through the circulating cooling water system of the inlet and outlet pipes, the PVC film can be continuously cooled to ensure that it maintains a suitable temperature during processing. The design that the upper pressure plate and its lower pressing roller, and the lower pressure plate and its lower pressing roller can operate alternately and are linked to each other allows the PVC film to increase the contact area and contact time with the cooling water inside the cooling tank.

[0004] The aforementioned patent improves cooling efficiency, thereby accelerating production speed and increasing production efficiency. It also makes it easier for workers to install PVC film onto the upper side of the pressing roller, improving ease of use. The top plate and the limiting plate work together to further limit the movement range of the lower pressing plate, ensuring the stable operation of the pressing device. However, the disadvantage of the aforementioned patent is that a large number of water droplets will be attached to the surface of the film after passing through the water tank, affecting subsequent production. In addition, if a general water blowing structure is added, the length of the production line will be increased.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a processing and cooling device for PVC film to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A PVC film processing cooling device includes a cooling water tank; an inlet pipe and an outlet pipe are respectively connected to the left and right ends of the cooling water tank; the cooling water tank is fixedly installed inside a mounting bracket, the mounting bracket includes a bottom frame, a front frame and a rear frame, a fixed roller group is fixedly installed between the top of the front frame and the rear frame, and a lifting roller group is provided below the fixed roller group; the lifting roller group is located inside the cooling water tank. The fixed roller group includes a first roller bracket and a plurality of first unpowered rollers located within the first roller bracket, the plurality of first unpowered rollers being evenly spaced apart; the lifting roller group includes a second roller bracket and a plurality of second unpowered rollers located within the second roller bracket, the plurality of second unpowered rollers being evenly spaced apart; the top of the mounting bracket is also provided with two sets of lifting mechanisms arranged symmetrically front and rear, the two sets of lifting mechanisms being fixedly installed on the inner sides of the front frame and the rear frame respectively, the lifting mechanisms being used to drive the lifting roller group to rise and fall; A blocking structure is provided at the left end of the cooling water tank. The blocking structure includes a left blocking plate, a front blocking plate, and a rear blocking plate. The left blocking plate, the front blocking plate, and the rear blocking plate are respectively fixedly connected to the left end of the cooling water tank and the left ends of the front and rear sides. A rectangular groove for the film to pass through is opened on the left blocking plate. At the same time, a water blowing device is fixedly installed between the front blocking plate and the rear blocking plate.

[0008] Furthermore, the first roller support includes two first mounting plates arranged symmetrically front to back, and a plurality of first roller shafts are fixedly connected between the first mounting plates. First unpowered rollers are rotatably connected to the first roller shafts through bearings. The two first mounting plates are respectively fixedly installed on the top of the front frame and the rear frame.

[0009] Furthermore, the second roller support includes two second mounting plates arranged symmetrically front to back, and a plurality of second roller shafts are fixedly connected between the second mounting plates. Second unpowered rollers are rotatably connected to the second roller shafts via bearings.

[0010] Furthermore, the lifting mechanism includes a lifting motor, a ball screw, and lifting guide rails. Lifting guide rails are vertically fixedly installed on the inner sides of both the front and rear frames. A first extension plate is slidably connected to the inner side of the lifting guide rails via a slider. The first extension plate extends downward into the cooling water tank and is fixedly connected to the outer side of the second mounting plate. The lifting motor is fixedly installed on the top of the motor mounting plate, which is then fixedly installed on the top of the corresponding front and rear frames. The output shaft of the lifting motor is connected to the lead screw of the ball screw. The upper and lower ends of the ball screw are rotatably connected to the motor mounting plate and the bearing mounting plate respectively via bearings. The lead screw nut of the ball screw is fixedly installed on a nut seat. A second extension plate is fixedly installed on the inner side of the nut seat. The second extension plate extends downward into the cooling water tank and is fixedly connected to the outer side of the second mounting plate.

[0011] Furthermore, the water blowing device also includes an air duct with a rectangular cross-section. One end of the air duct is connected to the air inlet of the second cross-flow fan, and the other end of the air duct extends out of the left baffle plate. This arrangement allows the second cross-flow fan to draw air in from the outside of the baffle structure.

[0012] Furthermore, the water blowing device includes a first cross-flow fan and a second cross-flow fan, wherein the first cross-flow fan and the second cross-flow fan are respectively located on the upper and lower sides of the rectangular groove in the vertical direction, wherein the air outlet of the first cross-flow fan is set at a 45-degree angle with the film passing through the rectangular groove, and similarly, the air outlet of the second cross-flow fan is set at a 45-degree angle with the film passing through the rectangular groove.

[0013] Furthermore, the right ends of both the front and rear baffles are bent inwards.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs two sets of symmetrically arranged lifting mechanisms, making the lifting of the lifting roller group more stable; Meanwhile, a water blowing device is installed on the left side above the water tank, which can blow off the water droplets attached to the surface of the film. At the same time, a blocking structure is set up so that most of the blown-off water droplets fall back into the cooling water tank, making it convenient for these water droplets to be recycled. In addition, the cross-flow fan of the water blowing device can further cool the film. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a cooling device for processing PVC film.

[0016] Figure 2 This is a front view of a PVC film processing and cooling device.

[0017] Figure 3 This is a side view of a PVC film processing and cooling device.

[0018] Figure 4 This is a top view of a PVC film processing and cooling device.

[0019] Figure 5 for Figure 3 Sectional view along the AA direction. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] Please see Figure 1-5 A PVC film processing cooling device includes a cooling water tank 1; The left and right ends of the cooling water tank 1 are respectively connected to an inlet pipe 101 and an outlet pipe 102. In use, the cooling water tank 1 is connected to a chiller through the inlet pipe 101 and the outlet pipe 102 to ensure that the temperature of the water in the cooling water tank 1 remains basically stable, thereby providing a cooling effect for the PVC film and ensuring that it maintains a suitable temperature during the processing. The cooling water tank 1 is fixedly installed inside the mounting bracket 2. The mounting bracket 2 includes a bottom frame 201, a front frame 202 and a rear frame 203. A fixed roller group 3 is fixedly installed between the tops of the front frame 202 and the rear frame 203. A lifting roller group 4 is provided below the fixed roller group 3. The lifting roller group 4 is located inside the cooling water tank 1. The fixed roller group 3 and the lifting roller group 4 have similar structures. The fixed roller group 3 includes a first roller support 301 and a plurality of first unpowered rollers 302 located within the first roller support 301, with the plurality of first unpowered rollers 302 being evenly spaced apart. Specifically, the first roller support 301 includes two first mounting plates 303 arranged symmetrically front and rear, and a plurality of first roller shafts 303 are fixedly connected between the first mounting plates 303. A first unpowered roller 302 is rotatably connected to the first roller shaft 303 through bearings; the two first mounting plates 303 are respectively fixedly installed on the top of the front frame 202 and the rear frame 203. The lifting roller group 4 includes a second roller support 401 and a plurality of second unpowered rollers 402 located within the second roller support 401. The plurality of second unpowered rollers 402 are evenly spaced apart. Specifically, the second roller support 401 includes two second mounting plates 403 arranged symmetrically front and rear, and a plurality of second roller shafts 403 are fixedly connected between the second mounting plates 403. Second unpowered rollers 402 are rotatably connected to the second roller shafts 403 through bearings. In this design, the number of first unpowered rollers 302 in the fixed roller group 3 should be one more than the number of second unpowered rollers 402 in the lifting roller group 4. This allows the film to enter between the fixed roller group 3 and the lifting roller group 4 from the first unpowered roller 302 at one end of the fixed roller group 3, and also to exit from the first unpowered roller 302 at the other end of the fixed roller group 3. This ensures that the film does not swing up and down during entry and exit, thus guaranteeing the stability of the film's movement. The top of the mounting bracket 2 is also provided with two sets of lifting mechanisms 410 arranged symmetrically in front and behind. The two sets of lifting mechanisms 410 are respectively fixedly installed on the inner side of the front frame 202 and the rear frame 203. The lifting mechanism 410 is used to drive the lifting roller group 4 to lift. The lifting mechanism 410 includes a lifting motor 411, a ball screw 412, and a lifting guide rail 413. The lifting guide rail 413 is vertically fixedly installed on the inner sides of both the front frame 202 and the rear frame 203. A first extension plate 415 is slidably connected to the inner side of the lifting guide rail 413 via a slider. The first extension plate 415 extends downward into the cooling water tank 1 and is fixedly connected to the outer side of the second mounting plate 403. The lifting motor 411 is fixedly installed on the top of the motor mounting plate 414, and the motor mounting plates 414 are respectively fixedly installed on corresponding... At the top of the front frame 202 and the rear frame 203, the output shaft of the lifting motor 411 is connected to the lead screw of the ball screw 412. The upper and lower ends of the ball screw 412 are rotatably connected to the motor mounting plate 414 and the bearing mounting plate 416 respectively through bearings. The lead screw nut of the ball screw 412 is fixedly installed on the nut seat 417. The second extension plate 418 is fixedly installed on the inner side of the nut seat 417. The second extension plate 418 extends downward into the interior of the cooling water tank 1 and is fixedly connected to the outer side of the second mounting plate 403. A blocking structure 5 is provided at the left end of the cooling water tank 1. The blocking structure 5 includes a left blocking plate 501, a front blocking plate 502 and a rear blocking plate 503. The left blocking plate 501, the front blocking plate 502 and the rear blocking plate 503 are respectively fixedly connected to the left end of the cooling water tank 1 and the left ends of the front and rear sides. The left baffle plate 501 has a rectangular groove 504 for the film to pass through; at the same time, a water blowing device 6 is fixedly installed between the front baffle plate 502 and the rear baffle plate 503. The water blowing device 6 includes a first cross-flow fan 601 and a second cross-flow fan 602, wherein the first cross-flow fan 601 and the second cross-flow fan 602 are respectively located on the upper and lower sides of the rectangular groove 504 in the vertical direction. The air outlet of the first cross-flow fan 601 is set at a 45-degree angle with the film passing through the rectangular groove 504. Similarly, the air outlet of the second cross-flow fan 602 is set at a 45-degree angle with the film passing through the rectangular groove 504. In this solution, the front and rear ends of the housings of the first cross-flow fan 601 and the second cross-flow fan 602 are respectively fixedly installed on the inner sides of the front baffle plate 502 and the rear baffle plate 503. The motor used to drive the first cross-flow fan 601 and the second cross-flow fan 602 is fixedly installed at the front end of the front baffle plate 502. The motor passes through the front baffle plate 502 and is connected to the main shaft of the first cross-flow fan 601 or the second cross-flow fan 602. Meanwhile, in this scheme, since the first cross-flow fan 601 is located at the top, the air inlet of the first cross-flow fan 601 is also located at the top. At this time, there are no obstructions at the air inlet of the first cross-flow fan 601, so the first cross-flow fan 601 does not need to be specially set. The second cross-flow fan 602 is located below the membrane. Therefore, the water blowing device 6 also includes an air duct 603 with a rectangular cross-section. One end of the air duct 603 is connected to the air inlet of the second cross-flow fan 602, and the other end of the air duct 603 extends out of the left baffle plate 501. This arrangement allows the second cross-flow fan 602 to take in air from the outside of the baffle structure 5. like Figure 5 As shown, when this utility model is used, the membrane material first passes through the first unpowered roller 302, then goes around the first unpowered roller 402, and then enters the second unpowered roller 302, and so on; finally, it is led out from the last unpowered roller 302. When this utility model is used, if it is necessary to increase the cooling time of the film, the lifting motor 411 of the lifting mechanism 410 drives the lifting roller group 4 to descend through the ball screw 412. At this time, the length of the film material wound between the fixed roller group 3 and the lifting roller group 4 in the cooling water tank increases, thus increasing the cooling time of the film. At the same time, this solution uses two sets of symmetrically arranged lifting mechanisms 410, which makes the lifting of the lifting roller group more stable. Meanwhile, a water blowing device 6 is installed on the left side above the water tank, which can blow off the water droplets attached to the surface of the film. At the same time, a blocking structure 5 is set so that most of the blown-off water droplets fall back into the cooling water tank, making it convenient for these water droplets to be recycled. In addition, the cross-flow fan of the water blowing device 6 can further cool the film.

[0022] In some embodiments of this solution, the right ends of both the front baffle 502 and the rear baffle 503 are bent inward. This arrangement helps to guide the blown water droplets into the cooling water tank, further reducing the number of water droplets flying outside the cooling water tank.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A cooling device for processing PVC film, comprising a cooling water tank; an inlet pipe and an outlet pipe are respectively connected to the left and right ends of the cooling water tank; characterized in that, The cooling water tank is fixedly installed inside the mounting bracket, which includes a bottom frame, a front frame, and a rear frame. A fixed roller group is fixedly installed between the tops of the front frame and the rear frame, and a lifting roller group is provided below the fixed roller group; the lifting roller group is located inside the cooling water tank. The fixed roller group includes a first roller bracket and a plurality of first unpowered rollers located within the first roller bracket, the plurality of first unpowered rollers being evenly spaced apart; the lifting roller group includes a second roller bracket and a plurality of second unpowered rollers located within the second roller bracket, the plurality of second unpowered rollers being evenly spaced apart; the top of the mounting bracket is also provided with two sets of lifting mechanisms arranged symmetrically front and rear, the two sets of lifting mechanisms being fixedly installed on the inner sides of the front frame and the rear frame respectively, the lifting mechanisms being used to drive the lifting roller group to rise and fall; A blocking structure is provided at the left end of the cooling water tank. The blocking structure includes a left blocking plate, a front blocking plate, and a rear blocking plate. The left blocking plate, the front blocking plate, and the rear blocking plate are respectively fixedly connected to the left end of the cooling water tank and the left ends of the front and rear sides. A rectangular groove for the film to pass through is opened on the left blocking plate. At the same time, a water blowing device is fixedly installed between the front blocking plate and the rear blocking plate.

2. The PVC film processing and cooling device according to claim 1, characterized in that, The first roller support includes two first mounting plates arranged symmetrically front to back, and several first roller shafts are fixedly connected between the first mounting plates. First unpowered rollers are rotatably connected to the first roller shafts through bearings. The two first mounting plates are respectively fixedly installed on the top of the front frame and the rear frame.

3. The PVC film processing and cooling device according to claim 1, characterized in that, The second roller support includes two second mounting plates arranged symmetrically front to back, and several second roller shafts are fixedly connected between the second mounting plates. Second unpowered rollers are rotatably connected to the second roller shafts through bearings.

4. The PVC film processing and cooling device according to claim 1, characterized in that, The lifting mechanism includes a lifting motor, a ball screw, and lifting guide rails. Lifting guide rails are vertically fixedly installed on the inner sides of both the front and rear frames. A first extension plate is slidably connected to the inner side of the lifting guide rails via a slider. The first extension plate extends downward into the cooling water tank and is fixedly connected to the outer side of the second mounting plate. The lifting motor is fixedly installed on the top of the motor mounting plate, which is then fixedly installed on the top of the corresponding front and rear frames. The output shaft of the lifting motor is connected to the lead screw of the ball screw. The upper and lower ends of the ball screw are rotatably connected to the motor mounting plate and the bearing mounting plate respectively via bearings. The lead screw nut of the ball screw is fixedly installed on a nut seat. A second extension plate is fixedly installed on the inner side of the nut seat. The second extension plate extends downward into the cooling water tank and is fixedly connected to the outer side of the second mounting plate.

5. The PVC film processing cooling device according to claim 1, characterized in that, The water blowing device also includes an air duct with a rectangular cross-section. One end of the air duct is connected to the air inlet of the second cross-flow fan, and the other end of the air duct extends out of the left baffle plate. This arrangement allows the second cross-flow fan to take in air from the outside of the baffle structure.

6. The PVC film processing cooling device according to claim 1, characterized in that, The water blowing device includes a first cross-flow fan and a second cross-flow fan, wherein the first cross-flow fan and the second cross-flow fan are located on the upper and lower sides of the rectangular groove respectively in the vertical direction. The air outlet of the first cross-flow fan is set at a 45-degree angle with the film passing through the rectangular groove. Similarly, the air outlet of the second cross-flow fan is set at a 45-degree angle with the film passing through the rectangular groove.

7. The PVC film processing cooling device according to claim 1, characterized in that, The right ends of both the front and rear baffles are bent inwards.

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