Film coating device for adding film to PET (Polyethylene Terephthalate) sheet

Abstract

The utility model provides a laminating device for PET (polyethylene terephthalate) sheet laminating, which comprises a belt conveyor, the top of the belt conveyor is sequentially provided with a conveying component, a cleaning component, a tension roller, a rolling component and an unwinding device from left to right, one end of the belt conveyor is fixedly connected with a cutting table on the side surface of the unwinding device, and the surface of the cutting table is provided with a cutting component. The conveying assembly is matched with the belt conveyor to convey the sheet, dust on the surface of the sheet can be fully and effectively cleaned through the air knife in the conveying process, the cleaned sheet is subjected to film covering operation through the cooperation of the unwinding device, the tensioning roller and the rolling assembly, and then the surface of the sheet before film covering is cleaner; and by arranging the cutting assembly, the protective film obtained after film covering can be cut off, and therefore the device can continuously conduct film covering treatment on the sheets.

Description

Technical Field

[0001] The utility model belongs to the technical field of sheet material coating devices, and in particular relates to a coating device for PET sheet material. Background Art

[0002] Polyethylene terephthalate for PET sheet is an important variety of thermoplastic polyester and is widely used in packaging of cosmetics, food electronics, toys, printing and other industries. PET sheet, as a kind of plastic sheet, sometimes needs to be covered with a protective film on its surface. At this time, lamination is required. After searching, it was found that the application number "202321987853.X" disclosed "a laminating device for PET sheet", which records "including a plate cleaning mechanism, the plate cleaning mechanism includes a lifting plate, a support plate, an electric push rod, a connecting plate, a U-shaped frame, an inclined shovel plate, a pressure plate, a cotton wiping strip, a side connecting plate and a fan. A conveyor belt is installed in the base of the laminating device body, and the surfaces of the laminating device body on both sides of the conveyor belt are welded with lifting plates through support plates. The lower surface of the center plate body of the lifting plate is locked with the tail seat of the electric push rod by bolts, and the extension of the electric push rod The head of the retracted rod is connected to a back frame plate of a U-shaped frame through a connecting plate, and an oblique shovel plate and a pressure plate are symmetrically welded on the outer surfaces of the double groups of lower frame plates of the U-shaped frame away from the connecting plate, and a cotton wiping strip is bonded to the lower plate surface of the pressure plate, and a side connecting plate is symmetrically welded on the outside of the support plate on one side of the lifting plate, and a fan is locked on the upper plate surface of the side connecting plate by bolts. When the above device is in use, the dust on the surface of the PET sheet is scraped off by the arranged oblique shovel plate, and the sheet can be further cleaned by the arranged cotton wiping strip, so that it is more convenient to coat the sheet and improve the coating effect of the sheet. However, the above device still has certain shortcomings when in use: when the dust on the surface of the sheet is scraped off by the oblique shovel plate, the surface of the sheet may be scratched, resulting in the coating effect of the sheet after coating. Based on this, we propose a coating device that can fully clean the dust on the surface of the PET sheet before coating. Utility Model Content

[0003] The utility model aims to provide a film coating device for PET sheets, aiming to solve the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a film coating device for PET sheets, comprising a belt conveyor, wherein a conveying assembly, a cleaning assembly, a tensioning roller, a rolling assembly, and an unwinding device are sequentially installed on the top of the belt conveyor from left to right, and a cutting table is fixedly connected to one end of the belt conveyor at the side of the unwinding device, and a cutting assembly is installed on the surface of the cutting table;

[0005] The cleaning assembly comprises first mounting blocks mounted on both sides of the top of the belt conveyor, and an air knife is fixedly connected between the two first mounting blocks.

[0006] As a preferred technical solution of the utility model, the conveying assembly includes second mounting blocks fixedly mounted on both sides of the top of the belt conveyor, mounting grooves are provided on opposite sides of the two second mounting blocks, connecting blocks are slidably mounted in the mounting grooves, a conveying roller is rotatably connected between the two connecting blocks, a damping rod is fixedly connected between the connecting block and the top of the mounting groove, a spring is provided on the outside of the damping rod, and both ends of the spring are respectively connected to the connecting block and the top of the mounting groove.

[0007] As a preferred technical solution of the utility model, the rolling assembly includes a first U-shaped frame with a fixed belt installed on the top of the belt conveyor, a second U-shaped frame is arranged inside the first U-shaped frame, a pressure roller is rotatably connected inside the second U-shaped frame, a first cylinder is fixedly connected to the top of the first U-shaped frame, and a piston rod of the first cylinder is fixedly connected to the top of the second U-shaped frame.

[0008] As a preferred technical solution of the utility model, the cutting assembly includes a third U-shaped frame, a fourth U-shaped frame is arranged in the third U-shaped frame, fixing holes are opened on both sides of the top of the fourth U-shaped frame, the top of the third U-shaped frame is fixedly connected to the second cylinder, the piston rod of the second cylinder is fixedly connected to the top of the fourth U-shaped frame, and a cutting knife is installed in the fourth U-shaped frame.

[0009] As a preferred technical solution of the utility model, both sides of the top of the cutting knife are fixedly connected with fixing screws, the fixing screws are inserted and connected with the corresponding fixing holes and the surfaces are threadedly connected with locking nuts, and one side of the cutting knife is fixedly connected with a handle.

[0010] As a preferred technical solution of the utility model, the conveying roller and the pressure roller are both arranged directly above the supporting roller of the belt conveyor.

[0011] As a preferred technical solution of the utility model, the air outlet of the wind knife is inclined downward and toward the conveying roller.

[0012] As a preferred technical solution of the utility model, the unwinding device includes a mounting frame installed on the top of the belt conveyor, an unwinding roller is rotatably installed in the mounting frame, an unwinding motor is installed on the side of the mounting frame, and the output shaft of the unwinding motor is fixedly connected to one end of the unwinding roller.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the sheet is conveyed by the provided conveying assembly in cooperation with the belt conveyor, and the dust on the surface of the sheet can be fully and effectively cleaned by the wind knife during the conveying process, and the cleaned sheet is laminated through the unwinding device in cooperation with the tensioning roller and the rolling assembly, thereby making the surface of the sheet before lamination cleaner and improving the lamination effect of the PET sheet, and the provided cutting assembly can cut off the protective film after lamination, so that the device can continuously perform lamination processing on the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the conveying component in the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the roller pressing assembly in the utility model;

[0019] Figure 5 It is a schematic diagram of the disassembly structure of the cutting component of the utility model.

[0020] In the figure: 1. belt conveyor; 2. conveying assembly; 21. second mounting block; 22. mounting groove; 23. connecting block; 24. conveying roller; 25. damping rod; 26. spring; 3. tensioning roller; 4. rolling assembly; 41. first U-shaped frame; 42. second U-shaped frame; 43. pressure roller; 44. first cylinder; 5. unwinding device; 6. cutting table; 7. cutting assembly; 71. third U-shaped frame; 72. fourth U-shaped frame; 73. fixing hole; 74. second cylinder; 75. cutting knife; 76. fixing screw; 77. locking nut; 78. handle; 8. first mounting block; 9. air knife. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides the following technical solutions: a film coating device for PET sheets, comprising a belt conveyor 1, on the top of which are sequentially installed a conveying assembly 2, a cleaning assembly, a tensioning roller 3, a rolling assembly 4, and a reeling device 5 from left to right, one end of the belt conveyor 1 is located on the side of the reeling device 5 and is fixedly connected to a cutting table 6, on the surface of which a cutting assembly 7 is installed.

[0023] In this embodiment, the cleaning assembly includes first mounting blocks 8 mounted on both sides of the top of the belt conveyor 1 , and an air knife 9 is fixedly connected between the two first mounting blocks 8 .

[0024] Specifically, after placing the PET sheet on the surface of the belt conveyor 1, the belt conveyor 1 transports the sheet to the conveying component 2. After the sheet is moved forward by the conveying component 2, the dust on the surface of the sheet is effectively cleaned by the wind knife 9. This cleaning method will not scratch the surface of the sheet, thereby effectively improving the subsequent sheet coating effect.

[0025] In this embodiment, the conveying assembly 2 includes a second mounting block 21 fixedly mounted on both sides of the top of the belt conveyor 1, and mounting grooves 22 are provided on the opposite sides of the two second mounting blocks 21. A connecting block 23 is slidably mounted in the mounting groove 22, and a conveying roller 24 is rotatably connected between the two connecting blocks 23. A damping rod 25 is fixedly connected between the connecting block 23 and the top of the mounting groove 22, and a spring 26 is provided on the outside of the damping rod 25, and the two ends of the spring 26 are respectively connected to the connecting block 23 and the top of the mounting groove 22.

[0026] Specifically, when the belt conveyor 1 conveys the sheet forward, the sheet moves to the conveying roller 24 , and under the action of the spring 26 , the sheet is pressed between the conveying roller 24 and the belt conveyor 1 , thereby improving the stability of the sheet conveying.

[0027] In this embodiment, the rolling assembly 4 includes a first U-shaped frame 41 fixedly installed on the top of the belt conveyor 1, a second U-shaped frame 42 is arranged inside the first U-shaped frame 41, a pressure roller 43 is rotatably connected inside the second U-shaped frame 42, a first cylinder 44 is fixedly connected to the top of the first U-shaped frame 41, and a piston rod of the first cylinder 44 is fixedly connected to the top of the second U-shaped frame 42.

[0028] Specifically, the second U-shaped frame 42 is driven to descend by the first cylinder 44 so that the pressure roller 43 is pressed against the surface of the sheet, and the unwinding device 5 releases the protective film and tensions it through the tensioning roller 3. Then, under the action of the pressure roller 43, the protective film is coated on the surface of the sheet, thereby completing the coating process of the PET sheet in this way.

[0029] In this embodiment, the cutting assembly 7 includes a third U-shaped frame 71, a fourth U-shaped frame 72 is arranged in the third U-shaped frame 71, fixing holes 73 are opened on both sides of the top of the fourth U-shaped frame 72, the top of the third U-shaped frame 71 is fixedly connected to the second cylinder 74, the piston rod of the second cylinder 74 is fixedly connected to the top of the fourth U-shaped frame 72, and a cutting knife 75 is installed in the fourth U-shaped frame 72.

[0030] Specifically, under the action of the pressure roller 43 and the belt conveyor 1, the sheet after lamination is transported to the surface of the cutting table 6, and then the fourth U-shaped frame 72 is driven down by the second cylinder 74, so that the protective film is cut off by the provided cutting knife 75, and the sheet is continuously laminarized, so that the efficiency of post-lamination processing of the sheet can be effectively improved in this way.

[0031] In this embodiment, both sides of the top of the cutting knife 75 are fixedly connected with fixing screws 76, which are inserted into the corresponding fixing holes 73 and have locking nuts 77 threaded on the surface. A handle 78 is fixedly connected to one side of the cutting knife 75.

[0032] Specifically, the cutting knife 75 is fixed by inserting the fixing screw 76 into the fixing hole 73 and then fixing it with the locking nut 77, so that the cutting knife 75 can be replaced conveniently in this way, and the cutting knife 75 can be replaced more conveniently by the handle 78.

[0033] In this embodiment, the conveying roller 24 and the pressure roller 43 are both arranged directly above the supporting rollers of the belt conveyor 1 .

[0034] Specifically, in this manner, the conveying roller 24 and the pressure roller 43 cooperate with the rollers of the belt conveyor 1 to effectively press and convey the sheet, thereby improving the stability of sheet conveying.

[0035] In this embodiment, the air outlet of the air knife 9 is inclined downward and toward the conveying roller 24 .

[0036] Specifically, in this way, the wind knife 9 can effectively clean the dust on the surface of the sheet, thereby improving the film coating effect of the sheet.

[0037] Working principle: After the PET sheet to be coated is placed on the surface of the belt conveyor 1, the sheet is conveyed to the conveying component 2 through the belt conveyor 1, and the conveying roller 24 in the conveying component 2 cooperates with the roller of the belt conveyor 1 to effectively compress and convey the sheet, thereby improving the stability of sheet conveying. During the conveying process of the sheet, the dust on the surface of the sheet is effectively cleaned by the wind knife 9. When the sheet is continuously conveyed forward to the roller pressing component 4, the protective film on the surface of the unwinding device 5 is released and tensioned by the tensioning roller 3. After the protective film passes through the bottom of the pressure roller 43, the pressure roller 43 cooperates with the roller of the belt conveyor 1 to coat the sheet while conveying the sheet, so that the sheet is conveyed to the cutting table 6 and the protective film is cut by the cutting component 7.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A film coating device for PET sheets, comprising a belt conveyor (1), characterized in that: The top of the belt conveyor (1) is provided with a conveying assembly (2), a cleaning assembly, a tensioning roller (3), a rolling assembly (4), and an unwinding device (5) in sequence from left to right. One end of the belt conveyor (1) is located on the side of the unwinding device (5) and is fixedly connected to a cutting table (6). A cutting assembly (7) is installed on the surface of the cutting table (6). The cleaning assembly comprises first mounting blocks (8) mounted on both sides of the top of the belt conveyor (1), and an air knife (9) is fixedly connected between the two first mounting blocks (8).

2. A film coating device for PET sheet according to claim 1, characterized in that: The conveying assembly (2) comprises second mounting blocks (21) fixedly mounted on both sides of the top of the belt conveyor (1); mounting grooves (22) are provided on opposite sides of the two second mounting blocks (21); a connecting block (23) is slidably mounted in the mounting groove (22); a conveying roller (24) is rotatably connected between the two connecting blocks (23); a damping rod (25) is fixedly connected between the connecting block (23) and the top of the mounting groove (22); a spring (26) is sleeved on the outside of the damping rod (25); and two ends of the spring (26) are respectively connected to the connecting block (23) and the top of the mounting groove (22).

3. A film coating device for PET sheet according to claim 2, characterized in that: The roller pressing assembly (4) comprises a first U-shaped frame (41) fixedly mounted on the top of the belt conveyor (1); a second U-shaped frame (42) is arranged inside the first U-shaped frame (41); a pressing roller (43) is rotatably connected inside the second U-shaped frame (42); a first cylinder (44) is fixedly connected to the top of the first U-shaped frame (41); and a piston rod of the first cylinder (44) is fixedly connected to the top of the second U-shaped frame (42).

4. A film coating device for PET sheet according to claim 1, characterized in that: The cutting assembly (7) comprises a third U-shaped frame (71), a fourth U-shaped frame (72) is arranged inside the third U-shaped frame (71), fixing holes (73) are provided on both sides of the top of the fourth U-shaped frame (72), the top of the third U-shaped frame (71) is fixedly connected to a second cylinder (74), the piston rod of the second cylinder (74) is fixedly connected to the top of the fourth U-shaped frame (72), and a cutting knife (75) is installed inside the fourth U-shaped frame (72).

5. A film coating device for PET sheet according to claim 4, characterized in that: Both sides of the top of the cutting knife (75) are fixedly connected with fixing screws (76), the fixing screws (76) are inserted and connected with the corresponding fixing holes (73) and the surfaces are threadedly connected with locking nuts (77), and one side of the cutting knife (75) is fixedly connected with a handle (78).

6. A film coating device for PET sheet according to claim 3, characterized in that: The conveying roller (24) and the pressure roller (43) are both arranged directly above the supporting roller of the belt conveyor (1).

7. A film coating device for PET sheet according to claim 2, characterized in that: The air outlet of the wind knife (9) is inclined downward and toward the conveying roller (24).

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