Surface treatment device for PVC (polyvinyl chloride) three-dimensional wood grain blister film

Abstract

The utility model discloses a surface treatment device for a PVC (polyvinyl chloride) three-dimensional wood grain blister film, and belongs to the technical field of decorative films. The device mainly comprises a base, a conveying mechanism, a high-pressure cleaning mechanism, a rotary cleaning mechanism, a dust collection mechanism, an air drying mechanism and a detection mechanism are sequentially and fixedly connected to the base from front to back, and a driving device is fixedly connected to the bottom of the base and drives the conveying mechanism and the rotary cleaning mechanism to rotate through a transmission device. A drainage hole is formed in a bottom plate of the base, and a drainage pipe communicated with the drainage hole is arranged at the bottom of the base. Through cooperative work of the high-pressure spraying mechanism, the rotary cleaning mechanism, the vacuum dust collection mechanism and the air drying mechanism, a good cleaning effect is achieved on a blister film with a three-dimensional wood grain structure, stains are prevented from being left in the three-dimensional wood grain structure, and the cleaning effect and the cleaning quality are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PVC blister films, and more particularly, to a surface treatment device for a PVC three-dimensional wood grain blister film. Background Art

[0002] The PVC three-dimensional wood grain blister film is mainly used for making doors, windows and boards. It has high aesthetic value and is deeply loved by customers. However, the surface of the PVC three-dimensional wood grain blister film is provided with protruding three-dimensional wood grain structures, resulting in low processing efficiency and dead corners during surface treatment.

[0003] The patent with the authorization announcement number of "CN219597414U" discloses a device for cleaning oil stains on the surface of a PVC film, which includes a waste liquid frame. A guide roller is installed at the feeding end of the waste liquid frame through an axle bracket, and a winding roller is installed at the winding end of the waste liquid frame through a carrier plate. A pulling motor is installed on the outer wall of the carrier plate, and the output end of the pulling motor is connected to the winding roller through a gearbox; a wiping assembly is installed inside the waste liquid frame, and the wiping assembly includes an assembly seat A, an oil-absorbing pad base layer, a pressing plate A and an oil-absorbing pad surface layer.

[0004] Although the above cleaning device solves the cleaning problem of the PVC film, it still has the following defects when in use: 1. The cleaning effect is not good. After the device runs for a period of time, stains will be generated on the cleaning device, affecting the subsequent cleaning of the PVC film; 2. After the cleaning is completed, whether the PVC film is cleaned needs to be judged manually, which is time-consuming and laborious, wastes labor costs, and manual detection leads to unstable product quality; 3. It is only suitable for processing flat PVC films and not suitable for processing three-dimensional embossed films. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a surface treatment device for a PVC blister film. Through the coordinated operation of a high-pressure spraying mechanism, a rotary cleaning mechanism, a vacuum dusting mechanism and a drying mechanism, it has a good cleaning effect on the blister film with a three-dimensional wood grain structure, avoids stains remaining in the three-dimensional wood grain structure, and greatly improves the cleaning effect and cleaning quality.

[0006] The surface treatment device for the PVC three-dimensional wood grain blister film includes a base. A conveying mechanism, a high-pressure cleaning mechanism, a rotary cleaning mechanism, a dusting mechanism, a drying mechanism and a detection mechanism are fixedly connected to the base in sequence from front to back. A driving device is fixedly connected to the bottom of the base, and the driving device drives the conveying mechanism and the rotary cleaning mechanism to rotate respectively through a transmission device. Drainage holes are opened on the bottom plate of the base, and a second drain pipe communicating with the drainage holes is provided at the bottom of the base.

[0007] Preferably, the high-pressure cleaning mechanism includes a frame. A through groove is provided in the middle of the frame. Both ends of the frame are fixedly connected to both sides of the base. The interior of the frame is of a hollow structure. A plurality of upper spraying devices are hermetically and fixedly installed above the through groove, and a plurality of lower spraying devices are hermetically and fixedly installed below the through groove. The upper spraying devices and the lower spraying devices are both communicated with the interior of the frame. One side of the frame is connected to the water supply device through a water pump.

[0008] Preferably, the conveying mechanism includes two brackets, which are respectively fixedly installed on both sides of the front end of the base. Drive shafts are rotatably connected to the front and rear ends of the two brackets respectively. One end of the drive shaft is fixedly connected to a first transmission wheel, and the first transmission wheel is in transmission connection with the transmission device. A transmission belt is jointly connected to the outer side walls of the two drive shafts.

[0009] Preferably, the rotary cleaning mechanism includes two rotary support frames, which are respectively fixedly installed on both sides of the base. Two rollers arranged vertically are rotatably connected to the rotary support frames. An upper roller brush is fixedly connected to the upper roller, and a lower roller brush is fixedly connected to the lower roller. The outer side walls of the upper roller brush and the lower roller brush are in contact with each other. A second transmission wheel matched with the transmission device is provided on one side of the two rollers.

[0010] Preferably, the dust suction mechanism includes a dust suction chamber, which is fixedly connected to the base. Upper and lower baffles that cooperate with each other are respectively provided on the front and rear sides of the dust suction chamber. The upper and lower baffles are made of soft rubber material. A first drain pipe is rotatably connected to the bottom of the dust suction chamber.

[0011] Preferably, the air drying mechanism includes an upper air box and a lower air box arranged vertically. The upper air box and the lower air box are both fixedly connected to both sides of the base. Air outlets are provided on the opposite sides of the upper air box and the lower air box, and an angle a is formed between the sides of the upper air box and the lower air box with air outlets.

[0012] Preferably, the detection mechanism includes an upper bracket and a lower bracket, which are both fixedly connected to the base. Detection devices that cooperate with each other are respectively fixedly connected to the opposite sides of the upper bracket and the lower bracket.

[0013] Preferably, a protective cover is rotatably connected to one side of the base. The protective cover can cover the dust suction mechanism, the air drying mechanism and the detection mechanism. The protective cover is made of a transparent material that is convenient for observing the internal situation.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. By setting the high-pressure spraying mechanism, rotary cleaning mechanism, vacuum dusting mechanism and air-drying mechanism to work together, a good cleaning effect is achieved on the plastic-formed film with a three-dimensional wood grain structure. The high-pressure cleaning mechanism enables the cleaning water to fully enter the grooves of the three-dimensional wood grain to dissolve stains. The rotary cleaning mechanism can brush off most of the dissolved stains. The dusting mechanism further sucks up the water droplets remaining on the upper and lower surfaces of the PVC three-dimensional wood grain plastic-formed film and the stains mixed in the water droplets, thus preventing stains from remaining in the three-dimensional wood grain structure. Then, the air-drying mechanism dries the upper and lower surfaces of the PVC three-dimensional wood grain plastic-formed film to avoid affecting its adsorption effect.

[0016] 2. A detection mechanism is added. The detection mechanism can perform real-time detection on the surface of the PVC three-dimensional wood grain plastic-formed film. When it detects that the film does not meet the requirements, the control device can control the driving device to reverse, so that the PVC three-dimensional wood grain plastic-formed film returns to the high-pressure cleaning mechanism for secondary cleaning, ensuring the cleaning quality of the PVC three-dimensional wood grain plastic-formed film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front structural schematic diagram of the present utility model;

[0018] Figure 2 is a back structural schematic diagram of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the conveying mechanism;

[0020] Figure 4 is a structural schematic diagram of the high-pressure cleaning mechanism;

[0021] Figure 5 is a structural schematic diagram of the rotary cleaning mechanism;

[0022] Figure 6 is a structural schematic diagram of the dusting mechanism;

[0023] Figure 7 is a structural schematic diagram of the air-drying mechanism;

[0024] Figure 8 is a structural schematic diagram of the detection mechanism.

[0025] In the figure, 1 is the conveying mechanism; 101 is the conveyor belt; 102 is the transmission shaft; 103 is the first driving wheel; 104 is the bracket; 105 is the installation limit hole; 2 is the high-pressure cleaning mechanism; 201 is the lower spraying device; 202 is the upper spraying device; 203 is the frame; 3 is the rotary cleaning mechanism; 301 is the upper rotary brush; 302 is the lower rotary brush; 303 is the roller shaft; 304 is the rotary support frame; 4 is the dust suction mechanism; 401 is the upper baffle; 402 is the lower baffle; 403 is the first drain pipe; 404 is the dust suction chamber; 5 is the air drying mechanism; 501 is the upper air box; 502 is the lower air box; 6 is the detection mechanism; 601 is the upper support; 602 is the detection device; 603 is the lower support; 7 is the base; 701 is the transmission device; 702 is the second drain pipe; 703 is the driving device; 704 is the air box frame; 8 is the protective cover; 9 is the control box. Detailed implementation mode

[0026] The following further describes the present utility model with reference to the accompanying drawings:

[0027] In the paragraphs of the detailed description, the orientation nouns involved are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Such as Figures 1 to 8As shown in the figure, a surface treatment device for a PVC three-dimensional wood grain plastic film includes a base 7 which plays a supporting role. A conveying mechanism 1, a high-pressure cleaning mechanism 2, a rotary cleaning mechanism 3, a dust suction mechanism 4, a drying mechanism 5 and a detection mechanism 6 are fixedly connected to the base 7 in sequence from front to back. The bottom surface of the PVC three-dimensional wood grain plastic film is a planar structure, and its bottom surface is in contact with the conveying mechanism 1. The PVC three-dimensional wood grain plastic film is conveyed into the interior of the present invention through the conveying mechanism 1 for treatment. A driving device 703 is fixedly connected to the bottom of the base 7. The driving device 703 drives the conveying mechanism 1 and the rotary cleaning mechanism 3 to rotate respectively through a transmission device 701. Drainage holes are formed in the bottom plate of the base 7, and a second drain pipe 702 communicating with the drainage holes is provided at the bottom of the base 7. Through the high-pressure cleaning mechanism 2, the cleaning water with a cleaning agent can be sprayed onto the front and back surfaces of the PVC three-dimensional wood grain plastic film, so that the stains on its upper and lower surfaces can be fully dissolved and mixed with the cleaning water; the rotary cleaning mechanism 3 brushes off the dissolved stains, and the dust suction mechanism 4 further sucks the residual water droplets and the stains mixed in the water droplets on the upper and lower surfaces of the PVC three-dimensional wood grain plastic film clean, so as to avoid the retention of stains in the three-dimensional structure. Then, the drying mechanism 5 dries the upper and lower surfaces of the PVC three-dimensional wood grain plastic film, and finally, through the detection mechanism 6, the upper and lower surfaces of the PVC plastic film are automatically detected, so as to detect the treatment quality of the PVC three-dimensional wood grain plastic film.

[0029] As Figure 4 shown, the high-pressure cleaning mechanism 2 includes a frame 203. The frame 203 is a rectangular structure, and a through groove for the PVC three-dimensional wood grain plastic film to pass through is provided in the middle of the frame 203. Both ends of the frame 203 are fixedly connected to the side plates on both sides of the base 7. The interior of the frame 203 is a hollow structure, which is convenient for introducing the cleaning water mixed with the cleaning agent into the interior of the frame 203. A plurality of upper spraying devices 202 are hermetically and fixedly installed above the through groove, and a plurality of lower spraying devices 201 are hermetically and fixedly installed below the through groove. The upper spraying devices 202 and the lower spraying devices 201 are both communicated with the interior of the frame 203. The upper spraying devices 202 and the lower spraying devices 201 are preferably high-pressure nozzles. The high-pressure nozzles are prior art and will not be elaborated here. One side of the frame 203 is connected to a water supply device through a water pump. The interior of the water supply device is the cleaning water doped with the cleaning agent. During operation, the water pump is started. At the same time, the PVC three-dimensional wood grain plastic film conveyed by the conveying mechanism 1 passes through the through groove. Under the action of the water pump, the upper spraying devices 202 and the lower spraying devices 201 spray the cleaning water evenly on the upper and lower surfaces of the PVC three-dimensional wood grain plastic film, so that the cleaning water can fully dissolve the oil stains on its surface, without missing the gaps of the three-dimensional wood grain and avoiding the generation of cleaning dead corners. As Figure 3As shown in the figure, the conveying mechanism 1 includes two brackets 104. The brackets 104 are in a right triangle structure. During installation, one right side of the bracket 104 is parallel to the bottom of the base 7, and the other right side is fixedly connected to the base 7. Moreover, the two brackets 104 are respectively fixedly installed on both sides of the front end of the base 7. The front and rear ends of the two brackets 104 are respectively rotatably connected with a transmission shaft 102. One end of the transmission shaft 102 is fixedly connected with a first transmission wheel 103. The first transmission wheel 103 is in transmission connection with the transmission device 701. The first transmission wheel 103 is preferably a belt pulley, and the transmission device 701 is a belt. The outer side walls of the two transmission shafts 102 are jointly in transmission connection with a transmission belt 101. The transmission belt 101 contacts the bottom of the PVC three-dimensional wood grain plastic film, so as to carry out the conveying. The upper end surface of the transmission belt 101 corresponds to the through groove, which is convenient for feeding the PVC three-dimensional wood grain plastic film into the through groove of the high-pressure cleaning mechanism 2 for cleaning both the upper and lower surfaces.

[0030] As Figure 5 shown in the figure, the rotary cleaning mechanism 3 includes two rotary support frames 304. The two rotary support frames 304 are respectively fixedly installed on both sides of the base 7. Two rollers 303 arranged up and down are rotatably connected to the rotary support frame 304. An upper roller brush 301 is fixedly connected to the upper roller 303, and a lower roller brush 302 is fixedly connected to the lower roller 303. The upper roller brush 301 and the lower roller brush 302 are preferably made of sponge material, so that they have a soft texture and good water absorption effect. The outer side walls of the upper roller brush 301 and the lower roller brush 302 are in contact. The PVC three-dimensional wood grain plastic film passes through between the upper roller brush 301 and the lower roller brush 302. By contacting the PVC three-dimensional wood grain plastic film with the upper roller brush 301 and the lower roller brush 302, the cleaning water and stains on the film are sucked away. A second transmission wheel matched with the transmission device 701 is arranged on one side of each of the two rollers 303. The transmission device 701 drives the rotary cleaning mechanism 3 to rotate through the second transmission wheel, so that the upper roller brush 301 and the lower roller brush 302 rub against the PVC three-dimensional wood grain plastic film, thereby assisting in cleaning the stains.

[0031] As Figure 6As shown in the figure, the dust suction mechanism 4 includes a dust suction chamber 404. A passage for the plastic suction film to pass through is provided inside the dust suction chamber 404. Dust suction ports are provided on the upper and lower end faces of the passage. The dust suction chamber 404 is fixedly connected to the base 7. Upper baffles 401 and lower baffles 402 that cooperate with each other are respectively provided on the front and rear sides of the dust suction chamber 404. The upper baffles 401 and the lower baffles 402 are made of soft rubber material. A drain pipe 403 is rotatably connected to the bottom of the dust suction chamber 404. The drain pipe 403 can be stored in a groove at the bottom of the dust suction chamber 404 as needed. The dust suction chamber 404 is connected to a negative pressure fan. The PVC three-dimensional wood grain plastic suction film passes through between the upper baffle 401 and the lower baffle 402. The negative pressure fan sucks negative pressure on the dust suction chamber 404, and the remaining water droplets on the PVC three-dimensional wood grain plastic suction film can be sucked into the dust suction chamber 404. A drain passage communicating with the drain pipe 403 is provided inside the dust suction chamber 404. The structure of the drain passage is not limited in this embodiment, as long as the sucked water can be discharged. Absorbing water through the dust suction mechanism 4 can avoid the remaining water droplets in the gaps of the PVC three-dimensional wood grain plastic suction film.

[0032] As Figure 7 shown in the figure, the air drying mechanism 5 includes an upper air box 501 and a lower air box 502 arranged up and down. Both the upper air box 501 and the lower air box 502 are connected to a fan, and the upper air box 501 and the lower air box 502 are fixedly connected to both sides of the base 7 through an air box frame 704. Air outlets are provided on the corresponding sides of the upper air box 501 and the lower air box 502, and an included angle a is formed between the sides of the upper air box 501 and the lower air box 502 with air outlets. A gap for the plastic suction film to pass through is provided on the side where the upper air box 501 and the lower air box 502 are close to each other. The PVC three-dimensional wood grain plastic suction film is further dried through the air drying mechanism 5, which is convenient for its subsequent rapid winding and improves the processing efficiency.

[0033] As Figure 8 shown in the figure, the detection mechanism 6 includes an upper support 601 and a lower support 603. Both the upper support 601 and the lower support 603 are fixedly connected to the base 7. Detection devices 602 that cooperate with each other are respectively fixedly connected to the opposite sides of the upper support 601 and the lower support 603. The detection device 602 is a prior art, and the detection device 602 is preferably an industrial camera. During the transmission of the PVC three-dimensional wood grain plastic suction film, the PVC three-dimensional wood grain plastic suction film can be photographed at any time for spot checks and compared with the pictures inside the system to determine whether it is cleaned.

[0034] In this embodiment, a protective cover 8 is rotatably connected to one side of the base 7. The protective cover 8 can cover the dust suction mechanism 4, the air drying mechanism 5, and the detection mechanism 6. The protective cover 8 is made of a transparent material that is convenient for observing the internal situation. On the one hand, the protective cover 8 can reduce noise, and on the other hand, it can prevent secondary pollution during the transmission of the PVC three-dimensional wood grain plastic suction film.

[0035] A control box 9 is also provided on the base 7. The driving device 703, the water pump on the high-pressure cleaning mechanism 2, the negative pressure fan, the fan on the air-drying mechanism 5, and the detection device 602 are all connected to the control box 9. The control box 9 can control the coordinated operation of each mechanism, and can also control the driving device 703 and the corresponding feeding end to reverse when the detection device 602 detects that the cleaning of the PVC three-dimensional wood grain plastic film is unqualified, so that the PVC three-dimensional wood grain plastic film is cleaned again.

[0036] Those skilled in the art can use the existing technologies they have mastered, such as installing corresponding mechanical limit switches or photoelectric sensors, to limit the designated positions of each executing component in the following action process; to achieve automated operation, the present utility model can adopt numerical control technology or PLC to control the actions of each executing component.

[0037] When the present utility model is in use, the smooth surface at the bottom of the PVC three-dimensional wood grain plastic film (hereinafter referred to as the plastic film) is placed on the conveying mechanism 1, and each mechanism is started through the control box 9. When working for the first time, the operator pulls the plastic film forward to make it pass through the high-pressure cleaning mechanism 2, the rotary cleaning mechanism 3, the dust suction mechanism 4, the air-drying mechanism 5 and the detection mechanism 6 in sequence, and is connected to the winding. When it passes through the high-pressure cleaning mechanism 2, the upper spraying device 202 and the lower spraying device 201 evenly spray the cleaning water containing the cleaning agent onto the upper and lower surfaces of the plastic film, so that the cleaning water can fully enter the three-dimensional wood grain grooves on the upper surface of the plastic film to dissolve stains; the plastic film continues to move forward. When it reaches the rotary cleaning mechanism 3, the upper rotary brush 301 and the lower rotary brush 302 contact the surface of the plastic film during rotation and rub against the plastic film, and most of the sewage on the upper and lower surfaces of the plastic film can be cleaned off; when the plastic film reaches the dust suction mechanism 4, the negative pressure fan evacuates the dust suction chamber 404, so as to suck the remaining sewage on the upper and lower surfaces of the plastic film clean. The upper baffle 401 and the lower baffle 402 play a certain sealing role, improving the working efficiency of the dust suction mechanism 4. The sewage inside the dust suction chamber 404 can be discharged through the drain pipe 1 403, and the wastewater generated during the cleaning process is discharged through the drain pipe 2 702. When the plastic film passes through the air-drying mechanism 5, the upper air box 501 and the lower air box 502 of the air-drying mechanism 5 dry the possible remaining moisture on the plastic film to prevent it from affecting the plastic absorption quality of the plastic film. Finally, the plastic film passes through the detection mechanism 6, and the detection mechanism 6 detects the cleaning quality of the plastic film. When it meets the detection requirements, the plastic film is output for normal winding; when it does not meet the detection requirements, the control box 9 controls the driving device 703 and the corresponding winding and unwinding mechanism to reverse, and conveys the plastic film to the position of the high-pressure cleaning mechanism 2 for re-cleaning, and works in such a cycle.

[0038] Finally, although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surface treatment device for a PVC three-dimensional wood grain plastic film, comprising a base (7), characterized in that: On the base (7), a conveying mechanism (1), a high-pressure cleaning mechanism (2), a rotary cleaning mechanism (3), a dust suction mechanism (4), a drying mechanism (5) and a detection mechanism (6) are fixedly connected in sequence from front to back. A driving device (703) is fixedly connected to the bottom of the base (7). The driving device (703) drives the conveying mechanism (1) and the rotary cleaning mechanism (3) to rotate respectively through a transmission device (701). Drain holes are formed in the bottom plate of the base (7), and a second drain pipe (702) communicating with the drain holes is arranged at the bottom of the base (7).

2. The surface treatment device for a PVC three-dimensional wood grain plastic film according to claim 1, wherein: The high-pressure cleaning mechanism (2) includes a frame (203). A through groove is arranged in the middle of the frame (203). Both ends of the frame (203) are fixedly connected to both sides of the base (7). The interior of the frame (203) is of a hollow structure. A plurality of upper spraying devices (202) are hermetically and fixedly installed above the through groove, and a plurality of lower spraying devices (201) are hermetically and fixedly installed below the through groove. The upper spraying devices (202) and the lower spraying devices (201) are both communicated with the interior of the frame (203). One side of the frame (203) is connected to a water supply device through a water pump.

3. The surface treatment device for the PVC three-dimensional wood grain plastic film according to claim 1, characterized in that: The conveying mechanism (1) includes two brackets (104). The two brackets (104) are respectively fixedly installed on both sides of the front end of the base (7). Drive shafts (102) are rotatably connected to the front and rear ends of the two brackets (104) respectively. A first transmission wheel (103) is fixedly connected to one end of the drive shaft (102). The first transmission wheel (103) is in transmission connection with the transmission device (701). A transmission belt (101) is commonly connected to the outer side walls of the two drive shafts (102).

4. The surface treatment device for the PVC three-dimensional wood grain plastic film according to claim 1, wherein: The rotary cleaning mechanism (3) includes two rotary support frames (304). The two rotary support frames (304) are respectively fixedly installed on both sides of the base (7). Two rollers (303) arranged up and down are rotatably connected to the rotary support frames (304). An upper roller brush (301) is fixedly connected to the upper roller (303), and a lower roller brush (302) is fixedly connected to the lower roller (303). The outer side walls of the upper roller brush (301) and the lower roller brush (302) are in contact with each other. A second transmission wheel cooperating with the transmission device (701) is arranged on one side of the two rollers (303).

5. The PVC three-dimensional wood grain plastic film surface treatment device according to claim 1, wherein: The dust suction mechanism (4) includes a dust suction chamber (404). The dust suction chamber (404) is fixedly connected to the base (7). An upper baffle (401) and a lower baffle (402) which cooperate with each other are respectively arranged on the front and rear sides of the dust suction chamber (404). The upper baffle (401) and the lower baffle (402) are made of soft rubber material. A first drain pipe (403) is rotatably connected to the bottom of the dust suction chamber (404).

6. The surface treatment device for PVC three-dimensional wood grain plastic film according to claim 1, wherein: The drying mechanism (5) includes an upper air box (501) and a lower air box (502) arranged up and down. The upper air box (501) and the lower air box (502) are both fixedly connected to both sides of the base (7). Air outlets are arranged on the sides of the upper air box (501) and the lower air box (502) corresponding to each other, and an included angle a is formed between the sides with air outlets of the upper air box (501) and the lower air box (502).

7. The surface treatment device for PVC three-dimensional wood grain plastic film according to claim 1, characterized in that: The detection mechanism (6) includes an upper bracket (601) and a lower bracket (603). Both the upper bracket (601) and the lower bracket (603) are fixedly connected to the base (7). On the opposite sides of the upper bracket (601) and the lower bracket (603), detection devices (602) that cooperate with each other are fixedly connected respectively.

8. The surface treatment device for the PVC three-dimensional wood grain plastic film according to any one of claims 1 to 7, characterized in that: A protective cover (8) is rotatably connected to one side of the base (7). The protective cover (8) can cover the dust suction mechanism (4), the air drying mechanism (5), and the detection mechanism (6). The protective cover (8) is made of a transparent material that facilitates observing the internal situation.

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