High-speed drying device for PVC film production

Abstract

The utility model relates to PVC film production technical field, concretely for a kind of high-speed drying device for PVC film production, including workbench, drying cabinet, upper cloth component, lower cloth component, supporting component and air supply component, the supporting leg is provided in the lower four corners of workbench, this high-speed drying device for PVC film production, cloth before, start first lifter and drive first lifting plate to rise (first transport roller synchronous upshift), start second lifter and drive second lifting plate to descend (second transport roller synchronous downshift), so that the first transport roller and second transport roller of originally staggered form " up-down staggered clearance "-at this time, PVC film can be directly horizontally sent from drying cabinet left side opening, without bypassing staggered roller group section by section;After cloth is completed, start first lifter and second lifter, first transport roller and second transport roller are arranged up and down staggered, PVC film forms " Z " shape folding path under the guidance of roller group, cooperate air supply component to realize the drying of material.

Description

Technical Field

[0001] This utility model relates to the field of PVC film production technology, specifically a high-speed drying device for PVC film production. Background Technology

[0002] PVC film (scientific name: polyvinyl chloride film) is a flexible film material made from polyvinyl chloride resin (PVC Resin) as the core raw material, with the addition of plasticizers, stabilizers, lubricants, color masterbatches and other additives, and processed through extrusion, calendering, blow molding and other processes. During the production process, the material needs to be dried in a drying box. In order to ensure the normal transfer of the material, the material is often "folded" so that it can be temporarily stored in the drying box for a longer time to ensure that it is dried stably. At this time, the material needs to bypass the staggered conveyor rollers, which is inconvenient to operate. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a high-speed drying device for PVC film production.

[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a high-speed drying device for PVC film production, comprising a workbench, a drying chamber, an upper fabric assembly, a lower fabric assembly, a support assembly, and an air supply assembly. Support legs are provided at the four corners below the workbench. A support groove for supporting the drying chamber is also provided on the workbench. Hollow holes are provided in the bottom wall of the support groove. The upper fabric assembly includes a first lifter, a first lifting plate, a first roller frame, and a first transport roller. The output end of the first lifter passes through the top wall of the drying chamber and is connected to the first lifting plate. Several sets of evenly arranged first roller frames are provided below the first lifting plate. The first roller frames are in the shape of an open-ended U-shape. A first transport roller is rotatably arranged between the two free ends below the first roller frame. The lower fabric assembly includes a second lifter, a second lifting plate, a second roller frame, and a second transport roller. The output end of the second lifter passes through the bottom wall of the drying chamber and is connected to the second lifting plate. Several sets of second roller frames with an upward opening shape are arranged above the second lifting plate. A second transport roller is rotatably arranged between the two free ends above the second roller frame. The second roller frame and the first roller frame are arranged alternately. The drying box is also equipped with an air supply component for drying materials; The drying chamber has openings symmetrically arranged on both the left and right sides.

[0005] To facilitate drying of the material from both the top and bottom, this utility model improves upon the following: the air supply assembly includes an air supply device, an air supply pipe, a diverter pipe, and an air distribution frame. Air supply devices are symmetrically arranged at both the top and bottom ends of the drying box. Air supply pipes are symmetrically arranged at both the top and bottom ends inside the drying box. Diverter pipes are symmetrically arranged on opposite sides of the first and second lifting plates. One end of the corresponding air supply pipe passes through the drying box and is connected to the air supply device, and the other end of the corresponding air supply pipe is connected to the diverter pipe. An air distribution frame is also arranged between the two free ends of the first and second roller frames. The corresponding diverter pipe is provided with several sets of output heads connected to the corresponding air distribution frame.

[0006] Preferably, guide rollers are rotatably arranged on the left and right sides inside the drying chamber, and the top wall of the guide rollers is located in the middle part of the opening.

[0007] To ensure the stability of the lifting of the first and second lifting plates, the present invention is improved by providing a first guide rod that penetrates the drying box on the first lifting plate, and a second guide rod that penetrates the drying box is provided below the second lifting plate.

[0008] Preferably, the drying box is also equipped with an exhaust pipe near the material output end.

[0009] Preferably, the exhaust pipe is equipped with a switch valve.

[0010] (III) Beneficial Effects Compared with the prior art, this utility model provides a high-speed drying device for PVC film production, which has the following beneficial effects: Before the PVC film is laid out, the first lifting device is activated to drive the first lifting plate to rise (the first transport roller moves up synchronously), and the second lifting device is activated to drive the second lifting plate to fall (the second transport roller moves down synchronously), so that the originally staggered first transport roller and second transport roller form an "vertical misalignment gap" - at this time the PVC film can be directly fed horizontally from the left opening of the drying box without having to go around the staggered roller group segment by segment; After the fabric is laid, the first and second lifters are activated. The first and second transport rollers are arranged alternately, and the PVC film forms a "Z" shaped folding path under the guidance of the roller group. This, together with the air supply component, dries the material. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a partial cross-sectional schematic diagram of the structure of this utility model; Figure 4 The structure of this utility model Figure 3 A side view diagram.

[0012] In the diagram: 1. Workbench; 2. Drying oven; 3. Support leg; 4. First lifting device; 5. First lifting plate; 6. First roller frame; 7. First conveyor roller; 8. Second lifting device; 9. Second lifting plate; 10. Second roller frame; 11. Second conveyor roller; 12. Air supply device; 13. Air supply pipe; 14. Diverter pipe; 15. Air distribution frame; 16. Guide roller; 17. First guide rod; 18. Second guide rod; 19. Exhaust pipe; 20. Switch valve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-4 A high-speed drying device for PVC film production includes a workbench 1, a drying chamber 2, an upper fabric assembly, a lower fabric assembly, a support assembly, and an air supply assembly. The workbench 1 has four support legs 3 at its lower corners. The workbench 1 also has a support groove for supporting the drying chamber 2, with perforated holes on its bottom wall. The upper fabric assembly includes a first lifter 4, a first lifting plate 5, a first roller frame 6, and a first transport roller 7. The output end of the first lifter 4 passes through the top wall of the drying chamber 2 and is connected to the first lifting plate 5. Several sets of evenly arranged first roller frames 6 are arranged below the first lifting plate 5. The first roller frames 6 are in the shape of an open-bottomed C-shape. A first transport roller 7 is rotatably arranged between the two free ends below the first roller frame 6. The lower fabric assembly includes a second lifter 8, a second lifting plate 9, a second roller frame 10, and a second transport roller 11. The output end of the second lifter 8 passes through the bottom wall of the drying box 2 and is connected to the second lifting plate 9. Several sets of second roller frames 10 with an upward opening are arranged above the second lifting plate 9. The second transport roller 11 is rotatably arranged between the two free ends above the second roller frame 10. The second roller frame 10 and the first roller frame 6 are arranged alternately. The drying box 2 has openings symmetrically arranged on its left and right sides; Start the first lifting device 4 (hydraulic cylinder), and its output end drives the first lifting plate 5 to slide upward along the first guide rod 17 (the guide rod ensures that the verticality error of the lifting is ≤0.1mm / m), and the first transport roller 7 moves upward synchronously; The second lifting device 8 is started simultaneously, which drives the second lifting plate 9 to slide downward along the second guide rod 18, and the second transport roller 11 moves downward simultaneously. When the first transport roller 7 and the second transport roller 11 form a vertical gap of ≥10cm, the PVC film is horizontally fed into the drying box 2 from the left opening under the drive of the front traction device, and guided into the inner channel of the box by the left guide roller 16 (the top wall is aligned with the middle of the opening). The rotation of the guide roller 16 (friction coefficient ≤0.1) can reduce the resistance of film conveying and avoid scratches on the film surface. The first and second lifting devices 8 are reverse-driven to reset the first transport roller 7 and the second transport roller 11 to an interleaved state (the first transport roller 7 is located directly above the two adjacent sets of second transport rollers 11, with a vertical distance of 5-8cm). The PVC film naturally forms a "Z" shaped folding path under the guidance of the roller assembly; The film body contacts the surface of the transport roller (contact pressure 0.05-0.1 N / cm). 2 Under traction, it is conveyed forward at a constant speed (consistent with the production line speed); In this embodiment, the drying chamber 2 is also equipped with an air supply assembly for material drying. The air supply assembly includes an air supply device 12, an air supply pipe 13, a diversion pipe 14, and an air distribution frame 15. The air supply devices 12 are symmetrically arranged at the upper and lower ends of the drying chamber 2. The air supply pipes 13 are symmetrically arranged at the upper and lower ends inside the drying chamber 2. The diversion pipes 14 are symmetrically arranged on the opposite sides of the first lifting plate 5 and the second lifting plate 9. One end of the corresponding air supply pipe 13 passes through the drying chamber 2 and is connected to the air supply device 12. The other end of the corresponding air supply pipe 13 is connected to the diversion pipe 14. An air distribution frame 15 is also arranged between the two free ends of the first roller frame 6 and the second roller frame 10. The corresponding diversion pipe 14 is provided with several sets of output heads connected to the corresponding air distribution frame 15.

[0015] When the air supply unit 12 is started (operating symmetrically up and down), it delivers hot air heated to the set temperature (50-120℃) through the air supply pipe 13 to the distribution pipe 14. The distribution pipe 14 evenly distributes the hot air to each group of air distribution frames 15. The air distribution frames 15 output dry hot air to dry the material. The hot air acts directly on the upper and lower surfaces of the membrane, and evaporates the moisture in the membrane through convection heat exchange. In this embodiment, an exhaust pipe 19 is also provided on the drying box 2 near the material output end. A switch valve 20 is provided on the exhaust pipe 19. When the switch valve 20 is opened, in conjunction with the external negative pressure device, hot and humid air is discharged from the exhaust pipe 19.

[0016] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0017] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-speed drying device for PVC film production, comprising a workbench (1), a drying chamber (2), an upper fabric assembly, a lower fabric assembly, a support assembly, and an air supply assembly, characterized in that: The workbench (1) is provided with four support legs (3) at the four corners below. The workbench (1) is also provided with a support groove for supporting the drying box (2). The bottom wall of the support groove is provided with a hollow hole. The upper fabric assembly includes a first lifter (4), a first lift plate (5), a first roller frame (6) and a first transport roller (7). The output end of the first lifter (4) passes through the top wall of the drying box (2) and is connected to the first lift plate (5). Several sets of evenly arranged first roller frames (6) are provided below the first lift plate (5). The first roller frame (6) is in the shape of a U-shaped opening at the bottom. The first transport roller (7) is rotatably arranged between the two free ends below the first roller frame (6). The lower fabric assembly includes a second lifter (8), a second lift plate (9), a second roller frame (10), and a second transport roller (11). The output end of the second lifter (8) passes through the bottom wall of the drying box (2) and is connected to the second lift plate (9). Several sets of second roller frames (10) with an upward opening are arranged above the second lift plate (9). The second transport roller (11) is rotatably arranged between the two free ends above the second roller frame (10). The second roller frame (10) and the first roller frame (6) are arranged alternately. The drying box (2) is also equipped with an air supply component for drying materials; The drying box (2) has openings symmetrically arranged on the left and right sides.

2. The high-speed drying device for PVC film production according to claim 1, characterized in that: The air supply assembly includes an air supply device (12), an air supply pipe (13), a diversion pipe (14), and an air distribution frame (15). The drying box (2) is symmetrically provided with air supply devices (12) at both the upper and lower ends. The drying box (2) is symmetrically provided with air supply pipes (13) at both the upper and lower ends. The first lifting plate (5) and the second lifting plate (9) are symmetrically provided with diversion pipes (14) on opposite sides. One end of the corresponding air supply pipe (13) passes through the drying box (2) and is connected to the air supply device (12). The other end of the corresponding air supply pipe (13) is connected to the diversion pipe (14). An air distribution frame (15) is also provided between the two free ends of the first roller frame (6) and the second roller frame (10). The corresponding diversion pipe (14) is provided with several sets of output heads connected to the corresponding air distribution frame (15).

3. The high-speed drying device for PVC film production according to claim 2, characterized in that: Inside the drying box (2), guide rollers (16) are also rotatably arranged on the left and right sides, and the top wall of the guide rollers (16) is located in the middle part of the opening.

4. The high-speed drying device for PVC film production according to claim 3, characterized in that: The first lifting plate (5) is also provided with a first guide rod (17) that passes through the drying box (2), and the second lifting plate (9) is also provided with a second guide rod (18) that passes through the drying box (2).

5. A high-speed drying device for PVC film production according to claim 4, characterized in that: An exhaust pipe (19) is also provided on the drying box (2) near the material output end.

6. The high-speed drying device for PVC film production according to claim 5, characterized in that: A switch valve (20) is installed on the exhaust pipe (19).

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