Protective film coating device

Abstract

The utility model belongs to the technical field of protective film processing, and particularly relates to a protective film coating device, which comprises a coating table, a coating table, a transmission mechanism and a transmission mechanism, the glue cylinder is rotationally arranged on the support, and a plurality of uniform glue outlet structures are distributed on the glue cylinder in an array mode; and the smearing assembly is arranged on the mounting frame and is used for solving the problem that the coating standard requirement cannot be met due to the fact that the thickness of the glue liquid finally coated on the base material is not uniform due to the fact that the amount of the glue liquid extruded on the base material every time is inconvenient to control.

Description

Technical Field

[0001] This utility model belongs to the field of protective film processing technology, specifically relating to a protective film coating device. Background Technology

[0002] Automotive protective film coating is a process that combines functional coatings, pressure-sensitive adhesives, and other materials to form a thin film product that protects the car's paint. The base material of automotive protective films is typically made of high-quality thermoplastic polyurethane (TPU), which maintains good elasticity and scratch resistance over a wide temperature range while also resisting UV radiation. The production of the protective film involves evenly coating the pressure-sensitive adhesive onto the surface of the TPU base film, followed by drying and the first winding.

[0003] However, in the current coating process, it is difficult to control the amount of adhesive squeezed onto the substrate each time, resulting in uneven thickness of the adhesive on the substrate, which fails to meet the standard requirements for coating. Utility Model Content

[0004] In view of the problems mentioned in the background art, the present invention provides a protective film coating device to solve the problem that the amount of adhesive squeezed onto the substrate each time is inconvenient to control, resulting in uneven thickness of the adhesive coating on the substrate and failure to meet the standard requirements of coating.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A protective film coating apparatus, comprising:

[0007] A coating table, wherein a support and a mounting frame are provided on the coating table, and the support is located in front of the mounting frame;

[0008] The adhesive cylinder is rotatably mounted on a support, and multiple uniform adhesive dispensing structures are arrayed on the adhesive cylinder.

[0009] An applicator assembly is mounted on a mounting bracket.

[0010] Based on the above technical solution, the present invention has made the following improvements:

[0011] Furthermore, the uniform glue dispensing structure includes a crossbar and multiple fixed tubes. The crossbar is clamped between the inner walls of both ends of the glue cylinder. The multiple fixed tubes are arrayed on the outer wall of the glue cylinder. Each fixed tube is equipped with a glue dispensing tube. The end of the glue dispensing tube outside the glue cylinder is provided with a glue dispensing hole. The end of the glue dispensing tube inside the glue cylinder is provided with a sealing plate. Multiple through holes are provided on the peripheral wall of the glue dispensing tube near the sealing plate. A stabilizing sleeve is provided on one side of the sealing plate near the glue dispensing tube. A stabilizing column is provided on the crossbar. One end of the stabilizing column is clamped in the stabilizing sleeve. A spring is provided between the bottom of the stabilizing sleeve and the top of the stabilizing column.

[0012] Furthermore, the inner diameter of the fixing tube is the same as the outer diameter of the dispensing tube, and the diameter of the sealing plate is the same as the outer diameter of the fixing tube.

[0013] Furthermore, an adhesive inlet is provided at the center of one end of the adhesive cylinder shaft.

[0014] Furthermore, the coating assembly includes a scraping mechanism and a brushing mechanism. The scraping mechanism is located in front of the brushing mechanism. The scraping mechanism includes multiple rotating shafts, each of which is vertically mounted on a mounting frame. Each rotating shaft has a smear at its bottom and a synchronous pulley at its top. All the synchronous pulleys are connected by a synchronous belt. One end of one of the rotating shafts is equipped with a motor, and a stop post is provided on the outer side of the synchronous belt between two adjacent synchronous pulleys.

[0015] Furthermore, the brushing mechanism includes a brush plate, which is secured to the mounting frame by a clip, and the bottom of the brush plate is provided with bristles.

[0016] The beneficial effects of this utility model are:

[0017] 1. By combining the coating table, adhesive cylinder, and multiple uniform dispensing structures, when the protective film substrate moves at a constant speed on the coating table and the adhesive cylinder rotates, the uniform dispensing structure can make the adhesive in the adhesive cylinder squeeze onto the protective film substrate in multiple equal amounts and in an array, thus avoiding the accumulation of adhesive in a certain part of the protective film substrate.

[0018] 2. With the coating component, after the adhesive in the adhesive tube is squeezed onto the protective film substrate in multiple equal parts and in an array by the uniform adhesive dispensing structure, the coating component can evenly coat the adhesive onto the protective film substrate. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a structural diagram of a protective film coating device according to the present invention;

[0021] Figure 2 This is a partial structural diagram of a protective film coating device according to the present invention;

[0022] Figure 3 This is a schematic diagram of a protective film coating device according to the present invention;

[0023] Figure 4 This is a partial cross-sectional view of a protective film coating device according to the present invention.

[0024] The attached diagram is labeled as follows:

[0025] 1. Coating table; 101. Support; 102. Mounting bracket; 2. Adhesive cylinder; 201. Adhesive inlet; 301. Fixing tube; 302. Adhesive outlet tube; 303. Through hole; 304. Stabilizing sleeve; 305. Crossbar; 306. Stabilizing column; 307. Spring; 308. Adhesive outlet hole; 309. Sealing plate; 401. Rotating shaft; 402. Smear; 403. Synchronous pulley; 404. Support column; 405. Synchronous belt; 406. Motor; 501. Compression sleeve; 502. Brush plate; 503. Brush bristles. Detailed Implementation

[0026] like Figures 1-4 As shown, a protective film coating apparatus includes:

[0027] The coating table 1 is provided with a support 101 and a mounting frame 102. The support 101 is located in front of the mounting frame 102. The top surface of the coating table 1 can hold the protective film substrate.

[0028] The glue cylinder 2 is rotatably mounted on the support 101. The shaft at one end of the glue cylinder 2 can be connected to an external drive mechanism, so that the external drive mechanism can drive the glue cylinder 2 to rotate. The center of the shaft at one end of the glue cylinder 2 is provided with a glue inlet 201, which can deliver glue into the glue cylinder 2.

[0029] Multiple uniform dispensing structures are arrayed on the glue cylinder 2. Each uniform dispensing structure includes a crossbar 305 and multiple fixed tubes 301. The crossbar 305 is clamped between the inner walls of both ends of the glue cylinder 2. The multiple fixed tubes 301 are arrayed on the outer wall of the glue cylinder 2. Each fixed tube 301 is provided with a dispensing tube 302. The inner diameter of the fixed tube 301 is the same as the outer diameter of the dispensing tube 302, so that the fixed tube 301 and the dispensing tube 302 are tightly connected, avoiding large gaps between the inner wall of the fixed tube 301 and the outer wall of the dispensing tube 302.

[0030] The dispensing tube 302 is provided with a dispensing hole 308 at one end outside the glue cylinder 2, which allows the glue inside the dispensing tube 302 to flow out. The dispensing tube 302 is provided with a sealing plate 309 at one end inside the glue cylinder 2. The diameter of the sealing plate 309 is the same as the outer diameter of the fixing tube 301, that is, the sealing plate 309 can abut against the wall of the fixed tube 301 at one end inside the glue cylinder 2 to prevent the dispensing tube 302 from completely slipping out of the fixed tube 301.

[0031] Furthermore, multiple through holes 303 are provided on the peripheral wall of the dispensing tube 302 near the sealing plate 309. A stabilizing sleeve 304 is provided on one side of the sealing plate 309 near the dispensing tube 302. A stabilizing column 306 is provided on the crossbar 305. One end of the stabilizing column 306 is locked inside the stabilizing sleeve 304. A spring 307 is provided between the bottom of the stabilizing sleeve 304 and the top of the stabilizing column 306. Through the provided spring 307, when the end of the dispensing tube 302 outside the glue cylinder 2 is not abutted, the spring 307 is in an extended state. At this time, the sealing plate 309 at the end of the dispensing tube 302 abuts against the inner wall of the fixed tube 301 inside the glue cylinder 2, so that each through hole 303 is blocked by the inner wall of the fixed tube 301. The adhesive tube 2 is blocked, preventing the inner cavity of the adhesive tube 2 from being connected to the inner cavity of the dispensing cylinder 302. When the adhesive cylinder 2 rotates, when one end of the dispensing tube 302 with the dispensing hole 308 comes into contact with the protective film substrate on the coating table 1, the spring 307 is compressed and contracts, causing the dispensing tube 302 to move into the fixed tube 301, so that each through hole 303 moves out from the fixed tube 301. At this time, the adhesive in the adhesive tube 2 can enter the dispensing tube 302 through each through hole 303, and finally flow out from the dispensing hole 308 onto the protective film substrate. Thus, the adhesive in the adhesive tube 2 can be squeezed onto the protective film substrate in multiple equal amounts and in an array distribution, avoiding the adhesive from accumulating only in one part of the protective film substrate.

[0032] The coating assembly is mounted on the mounting frame 102 and includes a scraping mechanism and a brushing mechanism. The scraping mechanism is located in front of the brushing mechanism and includes multiple rotating shafts 401, each vertically mounted on the mounting frame 102. Each rotating shaft 401 has a smear 402 at its bottom and a timing pulley 403 at its top. All timing pulleys 403 are connected by a timing belt 405. One end of one of the rotating shafts 401 is equipped with a motor 406, which can be used to drive the coating assembly. When the corresponding shaft 401 rotates, it drives each shaft 401 to rotate after being transmitted through each synchronous pulley 403 and synchronous belt 405. This causes each smear 402 to rotate. When each smear 402 rotates, it can spread the corresponding adhesive clumps on the protective film substrate and apply them to the protective film substrate. Each synchronous belt 405 between two adjacent synchronous pulleys 403 is provided with abutment 404 on its outer side. The abutment 404 can abut against the outer side of the synchronous belt 405, ensuring that the synchronous belt 405 and each synchronous pulley 403 have sufficient wrap angle and a sufficient number of meshing teeth.

[0033] After each smear 402 spreads the corresponding adhesive clumps squeezed onto the protective film substrate, a brushing mechanism is provided to avoid overlapping marks at the intersection of the edges of the rotating range of each smear 402. The brush 502 is secured to the mounting frame 102 by a clip 501. The bottom of the brush 502 is provided with bristles 503. When the protective film substrate moves at a uniform speed on the top surface of the coating table 1, the bristles 503 can brush the adhesive on the protective film substrate again, so that the thickness of the adhesive on the protective film substrate can be kept uniform and there will be no adhesive accumulation at the edge of the protective film substrate, thus meeting the standard requirements for coating.

[0034] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A protective film coating apparatus, characterized in that: include: A coating table (1) is provided with a support (101) and a mounting frame (102), wherein the support (101) is located in front of the mounting frame (102); Adhesive cylinder (2), the adhesive cylinder (2) is rotatably mounted on the support (101), and multiple uniform adhesive dispensing structures are arrayed on the adhesive cylinder (2); An applicator assembly is mounted on a mounting bracket (102).

2. The protective film coating apparatus according to claim 1, characterized in that: The uniform glue dispensing structure includes a crossbar (305) and multiple fixed tubes (301). The crossbar (305) is clamped between the inner walls of both ends of the glue cylinder (2). The multiple fixed tubes (301) are arranged in an array on the outer wall of the glue cylinder (2). Each fixed tube (301) is provided with a glue dispensing tube (302). The glue dispensing tube (302) has a glue dispensing hole (308) at one end outside the glue cylinder (2). The glue dispensing tube (302) is located inside the glue cylinder (2). One end is provided with a sealing plate (309), and the dispensing tube (302) is provided with multiple through holes (303) on the peripheral wall near the sealing plate (309). The sealing plate (309) is provided with a stabilizing sleeve (304) on one side of the dispensing tube (302). The crossbar (305) is provided with a stabilizing column (306). One end of the stabilizing column (306) is locked in the stabilizing sleeve (304). A spring (307) is provided between the bottom of the stabilizing sleeve (304) and the top of the stabilizing column (306).

3. The protective film coating apparatus according to claim 2, characterized in that: The inner diameter of the fixing tube (301) is the same as the outer diameter of the dispensing tube (302), and the diameter of the sealing plate (309) is the same as the outer diameter of the fixing tube (301).

4. The protective film coating apparatus according to claim 1, characterized in that: The adhesive cylinder (2) has an adhesive inlet (201) at the center of one end of its shaft.

5. The protective film coating apparatus according to claim 1, characterized in that: The coating assembly includes a scraping mechanism and a brushing mechanism. The scraping mechanism is located in front of the brushing mechanism. The scraping mechanism includes multiple rotating shafts (401). Each rotating shaft (401) is vertically mounted on the mounting frame (102). Each rotating shaft (401) has a smear (402) at its bottom and a synchronous pulley (403) at its top. All the synchronous pulleys (403) are connected by a synchronous belt (405). One end of one of the rotating shafts (401) is equipped with a motor (406). A stop post (404) is provided on the outside of the synchronous belt (405) between two adjacent synchronous pulleys (403).

6. The protective film coating apparatus according to claim 5, characterized in that: The brushing mechanism includes a brush plate (502), which is secured to the mounting bracket (102) by a sleeve (501), and the bottom of the brush plate (502) is provided with brush bristles (503).

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