PVA film production rolling device

Abstract

The utility model relates to a PVA film production rolling device which comprises a rack, a blanking die head, a first support, two second supports and a driving unit are installed on the rack, the two second supports are located on the two sides of the first support respectively, the first support is rotationally connected with a first roll shaft, the second supports are rotationally connected with second roll shafts, and the driving unit is connected with the first roll shaft. The discharging die head is located above the position between the first roller shaft and one of the second roller shafts, dust collection mechanisms are detachably arranged on the first support and the second support, the dust collection mechanism on the first support is located over the first roller shaft, and the dust collection mechanism on the second support is located under the second roller shaft. The first roller shaft and the two second roller shafts are used for conveying a bottom film, the second support is slidably connected with the rack, and the driving unit is used for driving the second support to move in the direction close to or away from the first support; according to the utility model, not only can thin film products with various thicknesses be produced according to actual requirements, but also non-uniformity of gaps between the roll shafts caused by impurity particles can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to a PVA film production rolling device. Background Art

[0002] Three-roll calenders are usually used in the production process of PVA film. The gap width between the rollers of the existing three-roll calender is limited, and it is impossible to produce film products of various thicknesses according to actual needs. In addition, due to the influence of the production environment, foreign particles are easily attached to the surface of the rollers, which easily causes uneven gaps between the rollers, thus affecting the molding quality of the film. Utility Model Content

[0003] The purpose of the utility model is to design a PVA film production rolling device so as to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A PVA film production rolling device comprises a frame, on which a blanking die head, a first bracket, a second bracket and a driving unit are installed, two second brackets are provided and are respectively located on both sides of the first bracket, a first roller is rotatably connected to the first bracket, and a second roller is rotatably connected to the second bracket, the blanking die head is located above between the first roller and one of the second rollers, and dust suction mechanisms are detachable from the first bracket and the second bracket, the dust suction mechanism on the first bracket is located directly above the first roller, and the dust suction mechanism on the second bracket is located directly below the second roller, the first roller and the two second rollers are used for conveying a base film, the second bracket is slidably connected to the frame, and the driving unit is used to drive the second bracket to move in a direction approaching or away from the first bracket.

[0006] Furthermore, the first bracket and the second bracket have the same structure and both include a base plate, the top of the base plate is fixedly connected with a first support plate and a second support plate which are relatively arranged, the first roller is rotatably connected between the first support plate and the second support plate of the first bracket, the second roller is rotatably connected between the first support plate and the second support plate of the second bracket, two relatively arranged slide grooves are fixedly connected between the first support plate and the second support plate, a through hole is provided on one side of the first support plate for the dust suction mechanism to pass through, and the dust suction mechanism is slidably connected between the two slide grooves.

[0007] Furthermore, the dust suction mechanism includes a dust hood, the dust suction port of the dust hood corresponding to the first bracket is located directly above the first roller, the dust suction port of the dust hood corresponding to the second bracket is located directly below the second roller, and a first sliding rod slidably connected to the sliding groove is provided on the outer wall of the dust hood.

[0008] Furthermore, the dust hood is connected to a dust hose, and one end of the dust hose away from the dust hood is connected to a vacuum cleaner.

[0009] Furthermore, a fixing plate is provided on one side of the dust hood, a fixing hole is provided on the fixing plate, a threaded hole aligned with the fixing hole is provided in the through hole, and the fixing hole and the threaded hole are connected by fixing bolts.

[0010] Furthermore, a sliding hole is provided at the bottom of the second bracket, and a second sliding rod slidably connected to the sliding hole is fixedly connected to the frame.

[0011] Furthermore, both ends of the second sliding rod are provided with limit blocks.

[0012] Furthermore, the driving unit is a hydraulic cylinder, and an output end of the hydraulic cylinder is fixedly connected to the second bracket.

[0013] Furthermore, a first motor for driving the first roller to rotate is installed on the first bracket.

[0014] Furthermore, a second motor for driving the second roller to rotate is installed on the second bracket.

[0015] The beneficial effects of the utility model are:

[0016] By driving the second bracket to move in a direction close to or away from the first bracket through the driving unit, the width of the gap between the two second rollers and the first roller can be adjusted respectively, so that after the film raw material fluid drips from the die head onto the bottom die, film products of various thicknesses can be produced according to actual needs, thereby increasing practicality;

[0017] The dust collecting mechanism can absorb and clean the foreign particles attached to the surfaces of the first roller and the second roller, so as to avoid the foreign particles causing uneven gaps between the rollers, thereby affecting the forming quality of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0021] Figure 3 It is a schematic structural diagram of the relationship between the second bracket, the dust cover and the second sliding rod in the utility model.

[0022] The names of the components marked in the figure are as follows:

[0023] Frame; 2. blanking die head; 3. first roller; 4. second roller; 5. bottom film; 6. bottom plate; 7. first support plate; 8. second support plate; 9. slide groove; 10. through hole; 11. dust hood; 12. first slide bar; 13. dust hose; 14. fixing plate; 15. fixing bolt; 16. slide hole; 17. second slide bar; 18. limit block; 19. hydraulic cylinder; 20. first motor; 21. second motor. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-3As shown, a PVA film production rolling device comprises a frame 1, on which a blanking die head 2, a first bracket, a second bracket and a hydraulic cylinder 19 are installed, two second brackets are provided and are respectively located on both sides of the first bracket, the first bracket and the second bracket have the same structure and both include a bottom plate 6, the top of the bottom plate 6 is fixedly connected with a first supporting plate 7 and a second supporting plate 8 arranged opposite to each other, a first roller 3 is rotatably connected between the first supporting plate 7 and the second supporting plate 8 of the first bracket, and a second roller 4 is rotatably connected between the first supporting plate 7 and the second supporting plate 8 of the second bracket, the blanking die head 2 is located above between the first roller 3 and one of the second rollers 4, the first roller 3 and the two second rollers 4 are used to convey a bottom film 5, the film raw material fluid drips from the blanking die head 2 onto the bottom die 5, and the film raw material fluid is firstly subjected to film calendering molding through the gap between the first roller 3 and the bottom die 5 closely attached to the first second roller 4, and when the formed film passes through the gap between the first roller 3 and the bottom die 5 closely attached to the second second roller 4, the thickness size difference of the film will be consolidated;

[0026] Two oppositely arranged slide grooves 9 are fixedly connected between the first support plate 7 and the second support plate 8, a dust hood 11 is provided between the two slide grooves 9, a first slide rod 12 slidably connected to the slide groove 9 is provided on the outer wall of the dust hood 11, a through hole 10 for the dust hood 11 to pass through is provided on one side of the first support plate 7, so that the dust hood 11 can pass through the through hole 10 and then be slidably installed between the first support plate 7 and the second support plate 8, so as to facilitate the installation and removal of the dust hood 11; the dust suction port of the dust suction hood 11 corresponding to the first bracket is located directly above the first roller shaft 3, and the dust suction port of the dust suction hood 11 corresponding to the second bracket is located directly below the second roller shaft 4. The dust hood 11 is connected to a dust hose 13, and one end of the dust hose 13 away from the dust hood 11 is connected to a dust collector. The dust collector absorbs and cleans the foreign particles attached to the surfaces of the first roller and the second roller through the dust hood 11 to prevent the foreign particles from causing uneven gaps between the rollers; a fixing plate 14 is provided on one side of the dust hood 11, and a fixing hole is provided on the fixing plate 14. A threaded hole aligned with the fixing hole is provided in the through hole 10, and the fixing hole and the threaded hole are connected by a fixing bolt 15. The dust hood 11 is fixed by the bolt 15 to prevent the dust hood 11 from being displaced by external force during operation, thereby affecting the dust collection effect;

[0027] The bottom plate 6 of the first bracket is fixed on the frame 1, and a sliding hole 16 is provided at the bottom of the bottom plate 6 of the second bracket. A second sliding rod 17 slidably connected to the sliding hole 16 is fixedly connected to the frame 1, and limit blocks 18 are provided at both ends of the second sliding rod 17. The limit blocks 18 can limit the sliding of the second bracket to avoid collision between the first roller 3 and the second roller 4 and cause damage; the output end of the hydraulic cylinder 19 is fixedly connected to the bottom plate 6 of the second bracket, and the hydraulic cylinder 19 is used to drive the second bracket to move in the direction of approaching or moving away from the first bracket, so as to adjust the width of the gap between the two second rollers 4 and the first roller 3 respectively, and film products of various thicknesses can be produced according to actual needs; a first motor 20 for driving the first roller 3 to rotate is installed on the second support plate 8 of the first bracket, and a second motor 21 for driving the second roller 4 to rotate is installed on the second support plate 8 of the second bracket.

[0028] Working principle:

[0029] like Figure 1-3 As shown, when the PVA film production roller pressing device is used, the thickness of the film to be produced is first determined, and then the hydraulic cylinder 19 is started. The hydraulic cylinder 19 drives the second bracket to move in a direction close to or away from the first bracket, so as to adjust the gap width between the two second rollers 4 and the first roller 3 respectively. After the gap width adjustment is completed, the first motor 20, the second motor 21, the blanking die head 2 and the vacuum cleaner are started;

[0030] The film raw material fluid drips from the blanking die head 2 onto the bottom die 5, and is firstly calendered through the gap between the first roller 3 and the bottom die 5 closely attached to the first second roller 4. When the formed film passes through the gap between the first roller 3 and the bottom die 5 closely attached to the second second roller 4, the thickness difference of the film will be consolidated.

[0031] During the film calendering process, the vacuum cleaner absorbs and cleans the foreign particles attached to the surfaces of the first roller and the second roller through the dust hood 11 to prevent the foreign particles from causing uneven gaps between the rollers.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A PVA film production rolling device, comprising a frame (1), characterized in that: A blanking die head (2), a first bracket, a second bracket and a driving unit are installed on the frame (1); two second brackets are provided and are respectively located on both sides of the first bracket; a first roller (3) is rotatably connected to the first bracket; a second roller (4) is rotatably connected to the second bracket; the blanking die head (2) is located above the first roller (3) and one of the second rollers (4); dust suction mechanisms are detachable from the first bracket and the second bracket; the dust suction mechanism on the first bracket is located directly above the first roller (3); the dust suction mechanism on the second bracket is located directly below the second roller (4); the first roller (3) and the two second rollers (4) are used for conveying a base film (5); the second bracket is slidably connected to the frame (1); and the driving unit is used for driving the second bracket to move in a direction close to or away from the first bracket.

2. The PVA film production rolling device according to claim 1, characterized in that: The first bracket and the second bracket have the same structure and both comprise a bottom plate (6); a first support plate (7) and a second support plate (8) arranged oppositely are fixedly connected to the top of the bottom plate (6); a first roller (3) is rotatably connected between the first support plate (7) and the second support plate (8) of the first bracket; a second roller (4) is rotatably connected between the first support plate (7) and the second support plate (8) of the second bracket; two slide grooves (9) arranged oppositely are fixedly connected between the first support plate (7) and the second support plate (8); a through hole (10) for a dust collecting mechanism to pass through is provided on one side of the first support plate (7); and the dust collecting mechanism is slidably connected between the two slide grooves (9).

3. The PVA film production rolling device according to claim 2, characterized in that: The dust suction mechanism comprises a dust suction hood (11), wherein the dust suction port of the dust suction hood (11) corresponding to the first bracket is located directly above the first roller (3), and the dust suction port of the dust suction hood (11) corresponding to the second bracket is located directly below the second roller (4), and a first sliding rod (12) slidably connected to the sliding groove (9) is provided on the outer wall of the dust suction hood (11).

4. The PVA film production rolling device according to claim 3, characterized in that: The dust hood (11) is connected to a dust hose (13), and one end of the dust hose (13) away from the dust hood (11) is connected to a dust collector.

5. The PVA film production rolling device according to claim 3, characterized in that: A fixing plate (14) is provided on one side of the dust cover (11), a fixing hole is provided on the fixing plate (14), a threaded hole aligned with the fixing hole is provided in the through hole (10), and the fixing hole and the threaded hole are connected by a fixing bolt (15).

6. The PVA film production rolling device according to claim 1, characterized in that: A sliding hole (16) is provided at the bottom of the second bracket, and a second sliding rod (17) is fixedly connected to the frame (1) and is slidably connected to the sliding hole (16).

7. The PVA film production rolling device according to claim 6, characterized in that: Limit blocks (18) are provided at both ends of the second sliding rod (17).

8. The PVA film production rolling device according to claim 1, characterized in that: The driving unit is a hydraulic cylinder (19), and an output end of the hydraulic cylinder (19) is fixedly connected to the second bracket.

9. The PVA film production rolling device according to claim 1, characterized in that: A first motor (20) for driving the first roller (3) to rotate is mounted on the first bracket.

10. The PVA film production rolling device according to claim 1, characterized in that: A second motor (21) for driving the second roller shaft (4) to rotate is mounted on the second bracket.

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