Pretreatment method and pretreatment device for PET (Polyethylene Terephthalate) membrane

Abstract

The invention provides a pretreatment method and a pretreatment device of a PET (Polyethylene Terephthalate) membrane, and belongs to the technical field of new materials. The problem of poor stability in the prior art is solved. The pretreatment method of the PET membrane comprises the following steps: A, preparing; b, adjusting; and C, pretreatment. The pretreatment device for the PET membrane comprises two limiting plates and a plurality of conveying rollers, the two limiting plates are symmetrically arranged on the two sides of a rack, a conveying belt is located between the two limiting plates, the conveying rollers are axially fixed between the two limiting plates and can rotate, and the conveying rollers are arranged on the rack. The plurality of conveying rollers and the upper part of the conveying belt form a pre-tightening structure for tightly pressing the PET film; and the movement of the conveying belt and the rotation of the conveying rollers have the tendency of driving the PET film to translate towards the same direction. The PET membrane pretreatment method and the PET membrane pretreatment device are high in stability.

Description

Technical Field

[0001] The invention belongs to the technical field of new materials and relates to a pretreatment method and a pretreatment device for a PET film. Background Art

[0002] When the PET film is subjected to subsequent coating and other process operations, it needs to be pretreated, and the surface smoothness of the PET film can be improved after the pretreatment.

[0003] The existing pretreatment operation usually uses a roller mechanism composed of multiple rollers to tension and convey the PET film. This operation method will cause the PET film to be subjected to excessive tension force, which can easily break the PET film during the operation and has poor stability.

[0004] Moreover, the existing roller mechanism can only pre-process the PET film of the corresponding width size. If the width size of the PET film is too small or too large, it will become unsuitable. Summary of the invention

[0005] The first object of the present invention is to provide a pretreatment method for PET film with high applicability in view of the above-mentioned problems existing in the prior art.

[0006] The second object of the present invention is to provide a pretreatment device used in the above-mentioned PET film pretreatment method.

[0007] The first object of the present invention can be achieved by the following technical solutions:

[0008] A pretreatment method for a PET film, characterized in that the method comprises the following steps:

[0009] A. Preparation: Measure the width of the PET film to be processed, check whether the conveyor belt device can move stably, and at the same time, prepare the limit plate and conveyor roller;

[0010] B. Adjustment: Connect two limit plates to both sides of the conveyor belt device respectively, adjust the spacing between the two limit plates, and after adjustment, match the spacing between the two limit plates with the width of the PET film to be processed, and fix the conveyor roller axially between the two limit plates so that the conveyor roller can rotate;

[0011] C. Pretreatment: When the PET film to be processed at the conveyor belt device moves horizontally along the conveyor belt, the PET film to be processed is pressed tightly between the conveyor roller and the conveyor belt. The translation of the conveyor belt and the rotation of the conveyor roller can make the PET film in a tensioned state and pass smoothly at the conveyor belt device. Under the above-mentioned tensioning effect, the surface of the conveyed PET film can be flat and smooth.

[0012] The second object of the present invention can be achieved by the following technical solutions:

[0013] A pretreatment device for PET film sheets, comprising a frame, a driving shaft, a driven shaft, a conveyor belt and a driving member, wherein the driving shaft and the driven shaft are respectively movably connected at two ends of the frame, the conveyor belt is sleeved on the driving shaft and the driven shaft, the driving member is fixedly connected to the frame and the driving member is connected to the driving shaft, and is characterized in that it also includes a limit plate and a conveying roller, the number of the limit plates is two, the two limit plates are symmetrically arranged on both sides of the frame, the conveyor belt is located between the two limit plates, the conveying roller is axially fixed between the two limit plates and the conveying roller can rotate, the number of the conveying rollers is several, and the several conveying rollers and the upper part of the conveyor belt form a structure for pressing the PET film tightly against the pre-tightening structure, and the movement of the conveyor belt and the rotation of the conveying roller both have a tendency to drive the PET film to translate in the same direction.

[0014] The above-mentioned PET film pretreatment device also includes a base assembly that can be adjusted up and down and left and right. The base assembly is located on both sides of the frame, and two limit plates are respectively connected to the corresponding base assemblies.

[0015] In the above-mentioned pretreatment device for PET film, the base assembly includes a fixed rod, a movable rod and a connecting seat. The above-mentioned fixed rod is vertically arranged and the lower end of the fixed rod is fixedly connected to the upper part of the frame. The movable rod is horizontally arranged. The outer end of the movable rod has a cylindrical connecting tube 1, which is sleeved on the fixed rod and the two are fixedly connected. The outer side of the above-mentioned connecting seat is fixedly connected to the limit plate by a fastener, and the inner side of the connecting seat has a cylindrical connecting tube 2, the outer end of the connecting tube 2 is sleeved on the outer end of the movable rod and the two are threadedly connected.

[0016] In the above-mentioned PET film pretreatment device, the connecting tube 1 is positioned and connected to the fixing rod through a locking pin.

[0017] In the above-mentioned PET film pretreatment device, the second connecting tube is positioned and connected to the movable rod through a locking pin.

[0018] In the above-mentioned PET film pretreatment device, the conveying roller includes a fixed shaft and a movable cylinder, and the fasteners are sequentially inserted into the connecting seat, the limiting plate and the fixed shaft to fix the three together. The above-mentioned movable cylinder is made of flexible material, and the movable cylinder is sleeved on the fixed shaft and the two are fixedly connected.

[0019] In the above-mentioned PET film pretreatment device, the movable cylinder is made of rubber material.

[0020] In the above-mentioned PET film pretreatment device, the connection seat is in the shape of a long sheet, the above-mentioned second connection tube is located in the middle of the connection seat, and the two ends of the connection seat are respectively connected to the corresponding fixed shafts through fasteners.

[0021] In the above-mentioned PET film pretreatment device, the base assembly and the two corresponding conveying rollers form an upper pre-tightening unit, and the number of the upper pre-tightening units is several, and the several upper pre-tightening units are evenly distributed along the length direction of the conveyor belt.

[0022] Compared with the prior art, the present PET film pretreatment method can adjust the distance between the two limiting plates according to the width of the PET film. Therefore, PET films of different widths can all receive corresponding pretreatment operations, and the applicability is relatively high.

[0023] At the same time, the height and left and right positions of the limit plates in the pretreatment device of the PET film can be adjusted. Therefore, not only the distance between two adjacent limit plates can be changed, but also the height position of the conveying roller can be changed, ultimately ensuring that different types of PET films can receive stable pretreatment operations with relatively high stability.

[0024] Of course, during the pretreatment process, the PET film is subjected to the dual traction effect of the conveyor belt and the conveyor roller, thereby ensuring that the PET film can pass smoothly and stably in the device and obtain stable pretreatment operation, which has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the pretreatment device of the PET film.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the pretreatment device of the PET film.

[0027] In the figure, 1, frame; 2, driving shaft; 3, driven shaft; 4, conveyor belt; 5, driving member; 6, limit plate; 7, conveyor roller; 7a, fixed shaft; 7b, movable cylinder; 8, fixed rod; 9, movable rod; 10, connecting seat; 11, connecting cylinder one; 12, connecting cylinder two. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0031] The pretreatment method of the PET film comprises the following steps:

[0032] A. Preparation: Measure the width of the PET film to be processed, check whether the conveyor belt device can move stably, and at the same time, prepare the limit plate and conveyor roller;

[0033] B. Adjustment: Connect two limit plates to both sides of the conveyor belt device respectively, adjust the spacing between the two limit plates, and after adjustment, match the spacing between the two limit plates with the width of the PET film to be processed, and fix the conveyor roller axially between the two limit plates so that the conveyor roller can rotate;

[0034] C. Pretreatment: When the PET film to be processed at the conveyor belt device moves horizontally along the conveyor belt, the PET film to be processed is pressed tightly between the conveyor roller and the conveyor belt. The translation of the conveyor belt and the rotation of the conveyor roller can make the PET film in a tensioned state and pass smoothly at the conveyor belt device. Under the above-mentioned tensioning effect, the surface of the conveyed PET film can be flat and smooth.

[0035] like Figure 1 and Figure 2 As shown, the pretreatment device of the PET film comprises a frame 1, a driving shaft 2, a driven shaft 3, a conveyor belt 4 and a driving member 5. The driving shaft 2 and the driven shaft 3 are movably connected at both ends of the frame 1, respectively, the conveyor belt 4 is sleeved on the driving shaft 2 and the driven shaft 3, and the driving member 5 is fixedly connected to the frame 1 and the driving member 5 is connected to the driving shaft 2.

[0036] It also includes a limit plate 6 and a conveying roller 7, wherein there are two limit plates 6, which are symmetrically arranged on both sides of the frame 1, and the conveyor belt 4 is located between the two limit plates 6. The conveyor roller 7 is axially fixed between the two limit plates 6 and can rotate. There are several conveyor rollers 7, and the several conveyor rollers 7 and the upper part of the conveyor belt 4 form a pre-tightening structure for pressing the PET film tightly against the PET film. The movement of the conveyor belt 4 and the rotation of the conveyor roller 7 both have a tendency to drive the PET film to translate in the same direction.

[0037] When the driving shaft 2 is driven by the driving member 5 to continuously rotate, the conveyor belt 4 located on the driving shaft 2 and the driven shaft 3 continuously translates together.

[0038] The two limiting plates 6 are arranged in parallel and are respectively located at both sides of the conveyor belt 4, and the PET film on the conveyor belt 4 is limited between the two limiting plates 6. At the same time, the conveyor roller 7 is pressed tightly against the upper part of the PET film, and the rotating conveyor roller 7 and the moving conveyor belt 4 act on the PET film at the same time, ensuring that the PET film can be stably tensioned during the stable conveying process.

[0039] In this embodiment, the speed at which the conveying roller 7 drives the PET film to move per unit time is greater than the speed at which the conveying belt 4 drives the PET film to move per unit time.

[0040] It also includes a base assembly that can be adjusted up and down and left and right. The base assembly is located at both sides of the frame 1, and two limit plates 6 are respectively connected to the corresponding base assemblies.

[0041] Not only can the limiting plate 6 be positioned on the frame 1 by the base assembly, but the position of the limiting plate 6 relative to the frame 1 can also be changed, thereby improving its applicability.

[0042] The base assembly includes a fixed rod 8, a movable rod 9 and a connecting seat 10. The fixed rod 8 is vertically arranged and the lower end of the fixed rod 8 is fixedly connected to the upper part of the frame 1. The movable rod 9 is horizontally arranged. The outer end of the movable rod 9 has a cylindrical connecting tube 11, which is sleeved on the fixed rod 8 and the two are fixedly connected. The outer side of the connecting seat 10 is fixedly connected to the limit plate 6 by a fastener, and the inner side of the connecting seat 10 has a cylindrical connecting tube 2 12, and the outer end of the connecting tube 2 12 is sleeved on the outer end of the movable rod 9 and the two are threadedly connected.

[0043] The connecting tube 11 is positioned and connected to the fixing rod 8 via a locking pin.

[0044] The second connecting tube 12 is positioned and connected to the movable rod 9 via a locking pin.

[0045] The connecting tube 1 11 is vertically arranged, and the connecting tube 2 12 is horizontally arranged. After the corresponding locking pin is released, the movable rod 9 can move up and down relative to the fixed rod 8, and the connecting seat 10 can move left and right relative to the movable rod 9.

[0046] Since the connecting seat 10 is indirectly connected to the fixing rod 8 through the movable rod 9, the connecting seat 10 can eventually move up and down and left and right.

[0047] The conveying roller 7 includes a fixed shaft 7a and a movable cylinder 7b. The fasteners are sequentially inserted into the connecting seat 10, the limiting plate 6 and the fixed shaft 7a to fix the three together. The movable cylinder 7b is made of flexible material. The movable cylinder 7b is sleeved on the fixed shaft 7a and the two are fixedly connected.

[0048] The flexible movable cylinder 7b can prevent the conveying roller 7 from rigidly contacting the PET film.

[0049] The movable cylinder 7b is made of rubber material.

[0050] The connecting seat 10 is in the shape of a long sheet, and the second connecting tube 12 is located in the middle of the connecting seat 10. Both ends of the connecting seat 10 are respectively connected to the corresponding fixed shaft 7a through fasteners.

[0051] Such a structure can effectively improve its structural compactness.

[0052] The base assembly and the two corresponding conveying rollers form an upper pre-tensioning unit. The number of the upper pre-tensioning units is several, and the several upper pre-tensioning units are evenly distributed along the length direction of the conveyor belt 4.

[0053] A plurality of upper pre-tightening units are evenly distributed along the length direction of the conveyor belt 4, so that the PET film can be translated stably.

[0054] Since the pretreatment method of the PET film can adjust the distance between the two limiting plates according to the width of the PET film, PET films of different widths can all receive corresponding pretreatment operations, and the applicability is relatively high.

[0055] At the same time, the height and left and right positions of the limit plates in the pretreatment device of the PET film can be adjusted. Therefore, not only the distance between two adjacent limit plates can be changed, but also the height position of the conveying roller can be changed, ultimately ensuring that different types of PET films can receive stable pretreatment operations with relatively high stability.

[0056] Of course, during the pretreatment process, the PET film is subjected to the dual traction effect of the conveyor belt and the conveyor roller, thereby ensuring that the PET film can pass smoothly and stably in the device and obtain stable pretreatment operation, which has high practical value.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A method for pretreating a PET film, characterized in that: The method comprises the following steps: A. Preparation: Measure the width of the PET film to be processed, check whether the conveyor belt device can move stably, and at the same time, prepare the limit plate and conveyor roller; B. Adjustment: Connect two limit plates to both sides of the conveyor belt device respectively, adjust the spacing between the two limit plates, and after adjustment, match the spacing between the two limit plates with the width of the PET film to be processed, and fix the conveyor roller axially between the two limit plates so that the conveyor roller can rotate; C. Pretreatment: When the PET film to be processed at the conveyor belt device moves horizontally along the conveyor belt, the PET film to be processed is pressed tightly between the conveyor roller and the conveyor belt. The translation of the conveyor belt and the rotation of the conveyor roller can make the PET film in a tensioned state and pass smoothly at the conveyor belt device. Under the above-mentioned tensioning effect, the surface of the conveyed PET film can be flat and smooth.

2. A PET film pretreatment device, comprising a frame, a driving shaft, a driven shaft, a conveyor belt and a driving member, wherein the driving shaft and the driven shaft are movably connected at both ends of the frame, the conveyor belt is sleeved on the driving shaft and the driven shaft, the driving member is fixedly connected to the frame and the driving member is connected to the driving shaft, characterized in that: It also includes a limit plate and a conveying roller, wherein there are two limit plates, which are symmetrically arranged on both sides of the frame, the conveyor belt is located between the two limit plates, the conveyor roller is axially fixed between the two limit plates and can rotate, and there are several conveyor rollers, which form a pre-tightening structure with the upper part of the conveyor belt for pressing the PET film tightly against the pre-tightening structure, and the movement of the conveyor belt and the rotation of the conveyor roller both have a tendency to drive the PET film to translate in the same direction.

3. The pretreatment device for PET film according to claim 2, characterized in that: It also includes a base assembly that can be adjusted up and down and left and right. The base assembly is located on both sides of the frame, and two limit plates are respectively connected to the corresponding base assemblies.

4. The pretreatment device for PET film according to claim 3, characterized in that: The base assembly includes a fixed rod, a movable rod and a connecting seat. The fixed rod is vertically arranged and the lower end of the fixed rod is fixedly connected to the upper part of the frame. The movable rod is horizontally arranged. The outer end of the movable rod has a cylindrical connecting tube 1, which is sleeved on the fixed rod and the two are fixedly connected. The outer side of the connecting seat is fixedly connected to the limit plate by a fastener, and the inner side of the connecting seat has a cylindrical connecting tube 2, the outer end of the connecting tube 2 is sleeved on the outer end of the movable rod and the two are threadedly connected.

5. The pretreatment device for PET film according to claim 4, characterized in that: The connecting tube 1 is positioned and connected to the fixing rod via a locking pin.

6. The PET film pretreatment device according to claim 5, characterized in that: The second connecting tube is positioned and connected to the movable rod via a locking pin.

7. The pretreatment device for PET film according to claim 6, characterized in that: The conveying roller includes a fixed shaft and a movable cylinder. The fasteners are sequentially arranged on the connecting seat, the limiting plate and the fixed shaft to fix the three together. The movable cylinder is made of flexible material. The movable cylinder is sleeved on the fixed shaft and the two are fixedly connected.

8. The PET film pretreatment device according to claim 7, characterized in that: The movable cylinder is made of rubber material.

9. The PET film pretreatment device according to claim 8, characterized in that: The connecting seat is in the shape of a long sheet, the second connecting tube is located in the middle of the connecting seat, and both ends of the connecting seat are respectively connected to the corresponding fixed shafts through fasteners.

10. The PET film pretreatment device according to claim 9, characterized in that: The base assembly and the two corresponding conveying rollers form an upper pre-tightening unit. The number of the upper pre-tightening units is several, and the several upper pre-tightening units are evenly distributed along the length direction of the conveying belt.

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