Thickness adjusting device for PET (Polyethylene Terephthalate) film

Abstract

The utility model relates to a thickness adjusting device for a PET (Polyethylene Terephthalate) film, belonging to the technical field of PET film production. A bottom support is arranged at the bottom of the horizontal seat plate, a material extrusion seat is arranged on the left side of the upper surface of the horizontal seat plate, a plurality of conveying wheels are arranged on the right side of the material extrusion seat, a thickness adjusting device is arranged on the horizontal seat plate, and a plurality of deviation preventing positioning seats are arranged on the fixed rolling wheel and the lifting rolling wheel respectively. The thickness adjusting device has the advantages that the whole lifting roller is driven by the lifting air cylinder to ascend and descend according to actual production requirements during use, and therefore the problem that in the prior art, when the thickness needs to be adjusted, adjusting assemblies at the two ends of an adjusting roller need to be adjusted manually, and adjustment is inconvenient is solved. The problem that the heights of the two sides are inconsistent in the adjusting process is solved, meanwhile, the multiple anti-deviation positioning bases are arranged on the lifting roller and the fixed roller, and the problem that in the prior art, a baffle is not arranged on an adjusting roller, and consequently a PET film can move left and right in the production process is solved.

Description

Technical Field

[0001] The utility model relates to a thickness regulating device for PET film, belonging to the technical field of PET film production. Background Art

[0002] PET film, also known as PET film, is a thin film made of polyethylene terephthalate. PET film has good chemical stability and is not easily corroded by acids, alkalis, and solvents. It is widely used in food packaging, pharmaceutical packaging, electronic product protective films, and the printing industry. During the actual production process, the thickness of PET film needs to be adjusted according to different needs. However, traditional extruders generally control the thickness of the film by controlling the extrusion speed, but this adjustment method cannot accurately control the film thickness.

[0003] In response to the above problems, corresponding solutions have emerged in the industry, such as the Chinese authorized utility model patent with the authorization announcement number CN 221022225U and the patent name: A film thickness adjustment device for a PET sheet extruder. In the above patent, an adjustment component for adjusting the film thickness is provided. By controlling the rotation of the threaded rod, the up and down movement of the adjustment roller can be controlled, and the cooperation between the adjustment roller and the auxiliary roller can adjust the final thickness of the PET film, making the thickness of the film more accurate.

[0004] However, the above patent has the following problems during use: adjustment components are respectively provided at both ends of the adjustment roller. When the thickness needs to be adjusted, the adjustment components at both ends of the adjustment roller need to be manually adjusted respectively. During the adjustment process, the problem of inconsistent heights on both sides will occur. Even if the adjustment components on both sides are adjusted at the same time, the problem of inconsistent heights on both sides will occur, resulting in inaccurate thickness control of the PET film and causing the product to be scrapped. At the same time, there is no baffle on the existing adjustment roller, which causes the PET film to move left and right during the production process, causing unnecessary trouble for subsequent use. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a thickness adjustment device for PET film to solve the problems faced in the industry.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions: a thickness adjustment device for PET film, comprising a horizontal seat plate, a bottom bracket is provided at the bottom of the horizontal seat plate, a material extrusion seat is provided on the left side of the upper surface of the horizontal seat plate, and a plurality of conveying wheels are provided on the right side of the material extrusion seat, a thickness adjustment device is provided on the horizontal seat plate, and the thickness adjustment device spans above the horizontal seat plate, and the thickness adjustment device includes side support plates installed on the front and rear sides of the horizontal seat plate, a top support plate is provided on the top of the side support plate, and fixed rollers and lifting rollers are respectively provided between the side support plates from bottom to top, the fixed roller is installed on the horizontal seat plate through a fixed structure, and the lifting roller moves up and down through a lifting structure, and a plurality of anti-deflection positioning seats are respectively provided on the fixed roller and the lifting roller.

[0007] Preferably, the lifting structure includes a lifting cylinder installed on the upper surface of the top support plate, a horizontal lifting plate is provided on the cylinder shaft of the lifting cylinder, vertical lifting plates are provided on both sides of the horizontal lifting plate, and a roller connecting plate is provided at the bottom of the vertical lifting plate, and the roller connecting plate is connected to both sides of the lifting roller.

[0008] Preferably, bearing grooves are respectively provided at both ends of the lifting roller, a rotary bearing is provided in the bearing groove, and the roller connecting plate is connected to the rotary bearing.

[0009] Preferably, a plurality of guide holes are provided on the top support plate, guide columns are provided in the guide holes, and the tops of the guide columns are connected to the horizontal lifting plate.

[0010] Preferably, the anti-deflection positioning seat includes a sleeve, a plurality of circular bosses are provided on the side of the sleeve, insertion grooves are formed between the circular bosses, and a plurality of positioning threaded holes are also provided on the sleeve.

[0011] Compared with the prior art, the benefits of the present invention are as follows: when in use, the lifting roller is driven to rise and fall as a whole by the lifting cylinder according to actual production needs, thereby solving the problem in the prior art that when the thickness needs to be adjusted, the adjustment components at both ends of the adjustment roller need to be manually adjusted, and the height inconsistency on both sides will appear during the adjustment process. At the same time, multiple anti-deflection positioning seats are provided on the lifting roller and the fixed roller, which solves the problem in the prior art that there is no baffle on the adjustment roller, causing the PET film to move left and right during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the thickness adjustment device.

[0015] Figure 3 It is a schematic diagram of the lifting structure.

[0016] Figure 4 It is a structural diagram of an anti-deflection positioning seat installed on a fixed roller and a lifting roller.

[0017] Figure 5 It is a structural diagram of the anti-deflection positioning seat.

[0018] Figure 6 yes Figure 5 sectional view of .

[0019] In the figure: 1. Horizontal seat plate; 2. Bottom bracket; 3. Material extrusion seat; 4. Conveying wheel; 5. Thickness adjustment device; 6. Side support plate; 7. Top support plate; 701. Guide hole; 702. Guide column; 8. Fixed roller; 9. Lifting roller; 901. Bearing groove; 10. Fixed frame; 11. Lifting structure; 1101. Lifting cylinder; 1102. Horizontal lifting plate; 1103. Vertical lifting plate; 1104. Roller connecting plate; 12. Anti-bias positioning seat; 1201. Sleeve; 1202. Circular boss; 1203. Insert groove; 1204. Positioning threaded hole. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 6 The thickness adjustment device for PET film shown in the figure includes a horizontal seat plate 1, a bottom bracket 2 is provided at the bottom of the horizontal seat plate 1, a material extrusion seat 3 is provided on the left side of the upper surface of the horizontal seat plate 1, and a plurality of conveying wheels 4 are provided on the right side of the material extrusion seat 3. A thickness adjustment device 5 is provided on the horizontal seat plate 1, and the thickness adjustment device 5 spans above the horizontal seat plate 1. The thickness adjustment device 5 includes side support plates 6 installed on the front and rear sides of the horizontal seat plate 1, and a top support plate 7 is provided on the top of the side support plates 6. Fixed rollers 8 and lifting rollers 9 are respectively provided between the side support plates 6 from bottom to top, and the fixed rollers 8 are installed on the horizontal seat plate 1 through a fixing frame 10. A lifting structure 11 is provided on the lifting roller 9, and a plurality of anti-deflection positioning seats 12 are respectively provided on the fixed roller 8 and the lifting roller 9.

[0022] In order to enable the lifting roller 9 to achieve the purpose of lifting, the lifting structure 11 further includes a lifting cylinder 1101 installed on the upper surface of the top support plate 7, and a horizontal lifting plate 1102 is provided on the cylinder shaft of the lifting cylinder 1101, and vertical lifting plates 1103 are respectively provided on both sides of the horizontal lifting plate 1102, and a roller connecting plate 1104 is provided at the bottom of the vertical lifting plate 1103, and the roller connecting plate 1104 is connected to both sides of the lifting roller 9.

[0023] In order to enable the lifting roller 9 to rotate, further, bearing grooves 901 are respectively provided at both ends of the lifting roller 9, and a rotary bearing is provided in the bearing groove 901, and the roller connecting plate 1104 is connected to the rotary bearing.

[0024] In order to improve the stability of the lifting roller 9 during lifting, a plurality of guide holes 701 are further provided on the top support plate 7 , and guide columns 702 are provided in the guide holes 701 , and the tops of the guide columns 702 are connected to the horizontal lifting plate 1102 .

[0025] In order to prevent the PET film from shifting during production, the anti-deviation positioning seat 12 further includes a sleeve 1201, a plurality of circular bosses 1202 are set on the side of the sleeve 1201, and insertion grooves 1203 are formed between the circular bosses 1202. The sleeve 1201 is also provided with a plurality of positioning threaded holes 1204.

[0026] In order to increase the supporting strength, the bottom bracket 2 is further formed by a plurality of beams and columns connected to each other.

[0027] Before use, first adjust the thickness adjustment device 5 according to the actual production needs. When adjusting, start the lifting cylinder 11. The lifting cylinder 11 drives the lifting roller 9 to perform lifting movement through the horizontal lifting plate 1102, the vertical lifting plate 1103 and the roller connecting plate 1104. By lifting and lowering the lifting roller 9, the distance between the lifting roller 9 and the fixed roller 8 is adjusted, thereby achieving the purpose of adjusting the thickness of the PET film.

[0028] During use, the raw material is placed in the material extrusion seat 3, the molten material is extruded from the material extrusion seat 3 through the material extrusion seat 3, and is transmitted to the thickness adjustment device 5 through the transmission wheel 4. The material passes through the gap between the lifting roller 9 and the fixed roller 8, thereby achieving the purpose of adjusting the thickness of the PET film through the lifting roller 9 and the fixed roller 8.

[0029] In this patent, when the lifting cylinder 1101 drives the lifting roller 9 to lift and lower, the lifting roller 9 can be lifted and lowered horizontally, thereby solving the problem in the prior art that when the thickness needs to be adjusted, the adjustment components at both ends of the adjustment roller need to be manually adjusted separately, and the problem of inconsistent heights on both sides will appear during the adjustment process. A plurality of guide columns 702 are set on the horizontal lifting plate 1102. By sliding the guide columns 702 in the guide holes 701, the stability of the horizontal lifting plate can be improved, thereby improving the stability of the upgrading roller 9 and preventing the lifting roller 9 from tilting during the lifting process, resulting in the thickness of the subsequent PET film being uncontrollable.

[0030] In this patent, a plurality of anti-deviation positioning seats 12 are respectively sleeved on the lifting roller 9 and the fixed roller 8. According to the actual width of the PET film, the distance between the anti-deviation positioning seats 12 installed on the same roller is adjusted, and the upper and lower anti-deviation positioning seats 12 are cross-inserted with each other, thereby effectively positioning the PET film left and right to prevent the PET film from shifting.

[0031] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A thickness adjustment device for PET film, comprising a horizontal base plate (1), a bottom bracket (2) provided at the bottom of the horizontal base plate (1), a material extrusion seat (3) provided on the left side of the upper surface of the horizontal base plate (1), a plurality of conveying wheels (4) provided on the right side of the material extrusion seat (3), a thickness adjustment device (5) provided on the horizontal base plate (1), characterized in that: The thickness adjustment device (5) spans above the horizontal seat plate (1), and the thickness adjustment device (5) includes side support plates (6) installed on the front and rear sides of the horizontal seat plate (1), a top support plate (7) is provided on the top of the side support plates (6), and fixed rollers (8) and lifting rollers (9) are respectively provided between the side support plates (6) from bottom to top, the fixed rollers (8) are installed on the horizontal seat plate (1) through a fixing frame (10), and a lifting structure (11) is provided on the lifting rollers (9), and a plurality of anti-deflection positioning seats (12) are respectively provided on the fixed rollers (8) and the lifting rollers (9).

2. The thickness adjustment device for PET film according to claim 1, characterized in that: The lifting structure (11) includes a lifting cylinder (1101) installed on the upper surface of the top support plate (7), a horizontal lifting plate (1102) is provided on the cylinder shaft of the lifting cylinder (1101), vertical lifting plates (1103) are provided on both sides of the horizontal lifting plate (1102), and a roller connecting plate (1104) is provided at the bottom of the vertical lifting plate (1103), and the roller connecting plate (1104) is connected to both sides of the lifting roller (9).

3. The thickness adjustment device for PET film according to claim 2, characterized in that: Bearing grooves (901) are respectively provided at both ends of the lifting roller (9), a rotary bearing is provided in the bearing groove (901), and the roller connecting plate (1104) is connected to the rotary bearing.

4. The thickness adjustment device for PET film according to claim 2, characterized in that: A plurality of guide holes (701) are provided on the top support plate (7), guide posts (702) are provided in the guide holes (701), and the tops of the guide posts (702) are connected to the horizontal lifting plate (1102).

5. The thickness adjustment device for PET film according to claim 1, characterized in that: The anti-deflection positioning seat (12) comprises a sleeve (1201), a plurality of circular bosses (1202) are provided on the side of the sleeve (1201), insertion grooves (1203) are formed between the circular bosses (1202), and a plurality of positioning threaded holes (1204) are also provided on the sleeve (1201).

6. The thickness adjustment device for PET film according to claim 1, characterized in that: The bottom bracket (2) is formed by a plurality of cross beams and columns connected to each other.

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