A surface coating apparatus for protective film processing

CN224614229UActive Publication Date: 2026-08-11GUANGDONG CHUANGYANG NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-14
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

[0002]用于保护膜加工的表面涂胶装置是专门针对保护膜生产流程设计的设备,可以将胶液精准、均匀地涂覆在保护膜表面,工作时先将待涂胶的保护膜平整放置在工作平台上,通过操作控制面板设定涂胶参数,随后胶液被放置在保护膜上,刮刀随着设定好的高度和速度匀速移动,将多余的胶液刮除,使胶液在保护膜上形成厚度均匀且平整的涂层,在刮刀顶部设置有两个调节旋钮为千分尺旋钮,用于调节刮刀的高度,在批量生产中切换工艺参数,如更换胶液需对整体高度进行时,需要单独调节两个旋钮需反复比对刻度进行多次微调,不仅耗时费力,还易因操作误差导致两端高度不一致,引发涂胶缺陷,从而拖慢生产节奏,降低生产的效率

Benefits of technology

[0016]本实用新型有益效果为:可以对两个旋钮进行同步调节,且可以根据实际使用情况对旋钮进行单独调节,同步调节可快速统一整体高度,适配工艺参数切换,减少批量生产中参数更换的耗时与误差,单独调节时对另一旋钮限位,既能精准补偿局部差异,又避免调节时破坏已设定的平衡状态,保障涂胶一致性,提升操作效率与质量稳定性。

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Abstract

This utility model relates to the field of material processing technology and discloses a surface coating device for protective film processing. It includes a main component, a scraper with a scraper blade, an adjuster at the top of the scraper blade, and a rotating component mounted on the adjuster. The rotating component includes a first bevel gear sleeved on the outside of the adjuster. The advantages of this utility model are: it allows for simultaneous adjustment of two knobs, and also allows for individual adjustment of the knobs according to actual usage. Simultaneous adjustment quickly unifies the overall height, adapts to process parameter switching, and reduces the time and error associated with parameter changes in mass production. Individual adjustment limits the other knob, accurately compensating for local differences while avoiding disruption of the established balance during adjustment, ensuring consistent coating, and improving operational efficiency and quality stability.
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Description

Technical Field

[0001] This utility model relates to the field of materials processing technology, and in particular to a surface coating device for processing protective films. Background Technology

[0002] The surface coating device for protective film processing is a specialized piece of equipment designed for the protective film production process. It can precisely and evenly coat the protective film surface. During operation, the protective film to be coated is first placed flat on the work platform. The coating parameters are set through the control panel. Then, the adhesive is placed on the protective film, and the scraper moves at a uniform speed according to the set height, scraping away excess adhesive to form a uniform and smooth coating on the protective film. There are two micrometer knobs on the top of the scraper for adjusting the height of the scraper. In mass production, when switching process parameters, such as changing the adhesive, the overall height needs to be adjusted. This requires adjusting the two knobs individually and repeatedly comparing the scale for fine adjustments. This is not only time-consuming and labor-intensive, but also prone to inconsistent heights at both ends due to operational errors, causing coating defects, thus slowing down the production pace and reducing production efficiency. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing surface coating devices for protective film processing, this utility model is proposed.

[0005] Therefore, the problem that this utility model aims to solve is that adjusting the two knobs individually requires repeated comparisons of the scale for multiple fine adjustments, which is time-consuming, labor-intensive, slows down the production pace, and reduces production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a surface coating device for processing protective film, comprising a main component, including a scraper, wherein a scraper is provided on the scraper and an adjuster is provided on the top of the scraper; A rotating assembly, disposed on the regulator, includes a rotating component, the rotating component including a first bevel gear, the first bevel gear being sleeved on the outside of the regulator, a second bevel gear being disposed on one side of the first bevel gear, a rotating column being fixed on one side of the second bevel gear, and a connecting sleeve being disposed at one end of the rotating column.

[0007] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, the rotating component further includes a limiting member, which includes a limiting frame. The limiting frame is sleeved on the outside of the rotating column, a positioning post is provided at the bottom of the limiting frame, and a pressure rod is provided on one side of the limiting frame.

[0008] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, a positioning plate is sleeved on the outside of the positioning post, a first spring is fixed on the top of the positioning plate, and one end of the first spring is fixed to the bottom of the limiting frame.

[0009] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, a movable strip is fixed to one side of the pressure rod, a movable sleeve is fixed to one end of the movable strip, a drive column is rotatably connected inside the movable sleeve, the drive column is inserted into one side of the connecting sleeve, and the drive column and the connecting sleeve are movably connected.

[0010] In a preferred embodiment of the surface coating device for protective film processing described in this utility model, the rotating component further includes a connector, the connector including a chuck, the chuck being fixed to one end of the drive column, and a sleeve being provided on one side of the chuck, the sleeve being fixed to one end of the rotating column.

[0011] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, the rotating column is movably connected to a positioning frame, the driving column is movably connected to a positioning plate, the connecting sleeve is movably connected to a positioning block, and a protective box is sleeved on the outside of the positioning block.

[0012] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, the rotating component further includes a moving part, the moving part includes a drive ring, the drive ring and the drive column are rotatably connected by a rotating shaft, a locking block is fixed on one side of the drive ring, and an inclined block is provided on one side of the locking block.

[0013] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, a second spring is fixed to one side of the inclined block, and one end of the second spring is fixed to the inner wall of the protective box.

[0014] As a preferred embodiment of the surface coating device for protective film processing described in this utility model, wherein: an extrusion block is fixed to the bottom of the inclined block, and an extrusion plate is fixed to one side of the extrusion block.

[0015] In a preferred embodiment of the surface coating device for protective film processing described in this utility model, a driving block is fixed to one side of the card block, a connecting block is provided on the top of the driving block, and a connecting plate is fixed to one side of the connecting block.

[0016] The beneficial effects of this utility model are as follows: it allows for synchronous adjustment of the two knobs, and also allows for individual adjustment of the knobs according to actual usage. Synchronous adjustment can quickly unify the overall height, adapt to process parameter switching, and reduce the time and error of parameter changes in batch production. When adjusting individually, it limits the other knob, which can accurately compensate for local differences and avoid disrupting the set balance state during adjustment, ensuring consistent glue application and improving operational efficiency and quality stability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is an overall structural diagram of a surface coating apparatus used for protective film processing.

[0018] Figure 2 This is a structural diagram of the regulator of a surface coating device used for protective film processing.

[0019] Figure 3 This is a structural diagram of the protective box for a surface coating device used in protective film processing.

[0020] Figure 4 This is a structural diagram of the positioning frame of a surface coating device used for protective film processing.

[0021] Figure 5 This is a ferrule structure diagram of a surface coating device used for protective film processing.

[0022] Figure 6 This is a cross-sectional view of the connecting sleeve of a surface coating device used for protective film processing.

[0023] Figure 7 This is a structural diagram of an extrusion block for a surface coating apparatus used in protective film processing. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example 1 Reference Figures 1-7 This is the first embodiment of the present invention. This embodiment provides a surface coating device for protective film processing. The surface coating device for protective film processing includes a main body component 100 and a rotating component 200. The two components work together to synchronously adjust two knobs, and the knobs can also be adjusted individually according to actual usage. The main component 100 includes a scraper 101, on which a scraper 102 is provided, and an adjuster 103 is provided on the top of the scraper 102.

[0028] The scraper applicator 101 is used to uniformly coat adhesive and other materials onto the surface of a substrate such as a protective film, achieving continuous and stable adhesive coating operations. The scraper 102, by contacting the substrate surface, scrapes off excess adhesive and controls the thickness of the adhesive layer, determining the uniformity and precision of the coating, which is crucial for ensuring the quality of the adhesive layer. The adjuster 103 is installed on the top of the scraper 102 and is used to precisely adjust the height of the scraper 102. By adjusting the knob, the position of the scraper 102 can be changed to adapt to different adhesive layer thickness requirements, ensuring that the coating parameters meet the process standards. The scraper applicator 101 is existing technology and will not be elaborated on further here.

[0029] The rotating assembly 200 is disposed on the regulator 103 and includes a rotating component 201. The rotating component 201 includes a first bevel gear 2011, which is sleeved on the outside of the regulator 103. A second bevel gear 2012 is disposed on one side of the first bevel gear 2011, and a rotating column 2013 is fixed on one side of the second bevel gear 2012. A connecting sleeve 2014 is disposed at one end of the rotating column 2013.

[0030] Two sets of rotating components 201 are respectively mounted on two adjusters 103. First bevel gears 2011 mesh with each other. A rotating column 2013 is inserted into one side of the protective box 2036. The rotating column 2013 and the protective box 2036 are rotatably connected via bearings. By engaging the corresponding chucks 2031 and sleeves 2032, the limit on the corresponding adjuster 103 can be released, allowing adjustment of the corresponding adjuster 103. When synchronous adjustment of the two adjusters 103 is required, the two chucks 2031 and sleeves 2032 are engaged. Rotating one of the regulators 103 can drive the first bevel gear 2011 to rotate, which in turn drives the second bevel gear 2012 to rotate. The rotation of the second bevel gear 2012 will drive the rotating column 2013 to rotate, which in turn drives the ferrule 2032 to rotate. The rotation of the ferrule 2032 will drive the chuck 2031 to rotate, which in turn drives the connecting sleeve 2014 to rotate. The rotation of the connecting sleeve 2014 will then drive the other rotating column 2013 to rotate, thus enabling the two regulators 103 to rotate synchronously.

[0031] Example 2 Reference Figures 2-7 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0032] Specifically, the rotating assembly 200 also includes a limiting member 202, which includes a limiting frame 2021. The limiting frame 2021 is sleeved on the outside of the rotating column 2013. A positioning post 2022 is provided at the bottom of the limiting frame 2021, and a pressure rod 2023 is provided on one side of the limiting frame 2021.

[0033] There are two limiting frames 2021: one fixed to the top of the positioning post 2022, and the other sleeved on the outside of the positioning post 2022 and movably connected to it. A friction ring is provided on the rotating post 2013, and a corresponding friction pad is fixed to the inner wall of the bottom limiting frame 2021. By pressing the rotating post 2013 with the bottom limiting frame 2021, the friction ring and the friction pad can be engaged, and then the rotating post 2013 can be limited by friction. To prevent the regulator 103 from rotating on its own, the positioning column 2022 is fixed to the top of the scraper 101. The positioning column 2022 can limit the scraper 101. A sloping groove is provided on one side of the limiting frame 2021, and the pressure rod 2023 is set as a sloping surface. By engaging the chuck 2031 and the sleeve 2032, the pressure rod 2023 can be driven to squeeze the limiting frame 2021 and separate it from the rotating column 2013. At this time, the limitation on the rotating column 2013 can be released.

[0034] Specifically, a positioning plate 2024 is sleeved on the outside of the positioning post 2022, and a first spring 2025 is fixed on the top of the positioning plate 2024. One end of the first spring 2025 is fixed to the bottom of the limiting frame 2021.

[0035] When the pressure rod 2023 presses against the limiting frame 2021 to separate it from the rotating column 2013, a compressive force can be applied to the first spring 2025, which can then release the limiting of the regulator 103. When the chuck 2031 and the sleeve 2032 are separated, the pressure rod 2023 and the limiting frame 2021 can be separated, which can then release the compression of the limiting frame 2021. Then, the rebound force of the first spring 2025 can make the limiting frame 2021 engage with the rotating column 2013, thereby limiting the regulator 103. The positioning plate 2024 is used to support the first spring 2025.

[0036] Specifically, a movable strip 2026 is fixed to one side of the pressure rod 2023, and a movable sleeve 2027 is fixed to one end of the movable strip 2026. A drive column 2028 is rotatably connected inside the movable sleeve 2027. The drive column 2028 is inserted into one side of the connecting sleeve 2014, and the drive column 2028 and the connecting sleeve 2014 are movably connected.

[0037] Connecting grooves are provided at both ends of the inner wall of the connecting sleeve 2014. Connecting blocks corresponding to the connecting grooves are fitted on one end of each of the two drive columns 2028. When the drive column 2028 and the connecting sleeve 2014 are engaged, the drive column 2028 can be moved. Then, the movement of the drive column 2028 can cause the connecting block to engage with the connecting groove. At this time, if the drive column 2028 is rotated, the connecting sleeve 2014 can be rotated. However, the connecting block on the other drive column 2028 is not engaged with the connecting groove at the other end of the connecting sleeve 2014. At this time, one regulator 103 can be rotated to move the two drive columns 2028 respectively so that the connecting block engages with the connecting groove simultaneously. Then, rotating one regulator 103 can cause the drive column 2028 to rotate, causing the connecting sleeve 2014 to drive the other drive column 2028 to rotate, thereby making the two regulators 103 rotate synchronously.

[0038] When the drive column 2028 is moved to engage the chuck 2031 and the sleeve 2032, the movable sleeve 2027 can be moved. The movable sleeve 2027 moves the moving bar 2026. At this time, the movement of the moving bar 2026 can move the pressure rod 2023 to press against the limit frame 2021. A slide rod is fixed at the bottom of the moving bar 2026. The slide rod is slidably connected to the top of the scraper 101. A return spring is fixed on one side of the slide rod. One end of the return spring is fixed to the inner wall of the scraper 101. When the moving bar 2026 is moved to press against the limit frame 2021, a pressing force can be applied to the return spring. The rebound force of the return spring can drive the pressure rod 2023 back to its original position to release the pressure on the limit frame 2021.

[0039] Specifically, the rotating assembly 200 also includes a connector 203, which includes a chuck 2031. The chuck 2031 is fixed to one end of the drive column 2028, and a sleeve 2032 is provided on one side of the chuck 2031. The sleeve 2032 is fixed to one end of the rotating column 2013.

[0040] A slot corresponding to the chuck 2031 is provided inside the chuck sleeve 2032. By engaging the chuck 2031 and the slot in the chuck sleeve 2032, the rotation of the drive column 2028 can drive the chuck sleeve 2032 to rotate, and the rotation of the chuck sleeve 2032 can drive the rotation column 2013 to rotate.

[0041] Example 3 Reference Figures 1-7 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0042] Specifically, a positioning frame 2033 is movably connected to the outside of the rotating column 2013, a positioning plate 2034 is movably connected to the outside of the driving column 2028, a positioning block 2035 is movably connected to the outside of the connecting sleeve 2014, and a protective box 2036 is sleeved on the outside of the positioning block 2035.

[0043] The positioning frame 2033, the positioning plate 2034, and the protective box 2036 are all fixed to the top of the scraper 101. The positioning frame 2033 is used to support the rotating column 2013, the positioning plate 2034 is used to support the drive column 2028, and the positioning block 2035 is used to support the connecting sleeve 2014. The positioning block 2035 can be supported by the protective box 2036.

[0044] Specifically, the rotating assembly 200 also includes a moving part 204, which includes a drive ring 2041. The drive ring 2041 is rotatably connected to the drive column 2028 via a rotating shaft. A locking block 2042 is fixed on one side of the drive ring 2041, and an inclined block 2043 is provided on one side of the locking block 2042.

[0045] The inclined block 2043 is inserted into one side of the protective box 2036. The inclined block 2043 and the protective box 2036 are movably connected. By moving the locking block 2042, the drive ring 2041 can be moved. The movement of the drive ring 2041 drives the drive column 2028 to move. At this time, the connecting block on the drive column 2028 can engage with the connecting groove on the connecting sleeve 2014. At the same time, the locking block 2042 can squeeze the inclined block 2043 to retract it into the protective box 2036. When the locking block 2042 moves to the other side of the inclined block 2043, the rebound of the inclined block 2043 can limit the locking block 2042. The force of the return spring can drive the pressure rod 2023 to return to its original position and release the compression on the limit frame 2021. A lever is fixed on one side of the locking block 2042. The lever can be moved to move the locking block 2042 independently.

[0046] Specifically, a second spring 2044 is fixed to one side of the inclined block 2043, and one end of the second spring 2044 is fixed to the inner wall of the protective box 2036.

[0047] When it is necessary to release the limit on the locking block 2042, the inclined block 2043 is squeezed to retract into the protective box 2036. At this time, the second spring 2044 can be squeezed, and then the limit on the locking block 2042 can be released. The return force of the reset spring can drive the pressure rod 2023 back to its original position. When the inclined block 2043 is released, the return force of the second spring 2044 can drive the inclined block 2043 back to its original position for the next use.

[0048] Specifically, an extrusion block 2045 is fixed to the bottom of the inclined block 2043, and an extrusion plate 2046 is fixed to one side of the extrusion block 2045.

[0049] The user can move the extrusion block 2045 by pressing the extrusion plate 2046. The movement of the extrusion block 2045 can move the inclined block 2043. A pressing column is fixed on one side of the extrusion plate 2046. A connecting cover is movably connected to the outside of the pressing column. The connecting cover is fixed to one side of the protective box 2036. The setting of the connecting cover can support the pressing column. The setting of the pressing column makes it convenient for the user to press the extrusion plate 2046.

[0050] Specifically, a drive block 2047 is fixed to one side of the card block 2042, a connecting block 2048 is provided on the top of the drive block 2047, and a connecting plate 2049 is fixed to one side of the connecting block 2048.

[0051] The drive block 2047 is set as an inclined surface. A connecting rod is fixed to one side of the connecting block 2048, and a connecting spring is fixed to the bottom of the connecting rod. One end of the connecting spring is fixed to one side of the protective box 2036. By pressing the connecting plate 2049, the connecting block 2048 can be driven to squeeze the drive block 2047 respectively. At this time, the drive block 2047 can be moved. Then, by the movement of the drive block 2047, the locking block 2042 can be moved to engage with the inclined block 2043, so that the two chucks 2031 and the sleeve 2032 can be engaged at the same time. Pressing the connecting plate 2049 can apply a squeezing force to the connecting spring. When the connecting plate 2049 is released, the rebound force of the connecting spring can drive the connecting plate 2049 back to its original position for the next use.

[0052] When using the device, if both adjusters 103 need to be adjusted simultaneously, pressing the connecting plate 2049 causes the connecting block 2048 to move downwards. The connecting block 2048 then presses against the driving block 2047, which in turn causes the locking block 2042 to move. The locking block 2042 then presses against the inclined block 2043, compressing the second spring 2044. After the locking block 2042 moves to the other side of the inclined block 2043, the second spring 2044 causes the inclined block 2043 to reset and reposition the locking block 2042. The limit is reached, and at the same time, the locking block 2042 drives the driving column 2028 to move through the driving ring 2041. The connecting block on the driving column 2028 engages with the connecting groove of the connecting sleeve 2014, and the driving column 2028 drives the moving bar 2026 and the pressure rod 2023 to move. The pressure rod 2023 squeezes the limiting frame 2021 and compresses the first spring 2025. The limiting frame 2021 separates from the rotating column 2013 and releases the limit. The chuck 2031 engages with the sleeve 2032. Rotating one of the adjusters 103 drives the first bevel gear 2011 to rotate. The first bevel gear 2011 meshes with the second bevel gear 2012, which drives the rotating column 2013 to rotate. The rotating column 2013 drives the drive column 2028 and the connecting sleeve 2014 to rotate through the clasp 2032 and chuck 2031. The connecting sleeve 2014 drives the rotating column 2013 and the second bevel gear 2012 on the other side to rotate, thus achieving synchronous rotation of the two adjusters 103 and adjusting the height of the scraper 102.

[0053] When one of the adjusters 103 needs to be adjusted individually, pressing the corresponding side's extrusion plate 2046 moves the extrusion block 2045 and the inclined block 2043 to compress the second spring 2044, releasing the limit on the corresponding side's locking block 2042. The reset spring drives the pressure rod 2023, the moving bar 2026 and the drive column 2028 to reset, the chuck 2031 separates from the sleeve 2032, and the first spring 2025 drives the limit frame 2021 to reset and engage with the rotating column 2013 for limit positioning. At this time, rotating the adjuster 103 on that side allows for individual adjustment.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A surface coating device for protecting a film processing, characterized by: include, The main component (100) includes a scraper (101), on which a scraper (102) is provided, and an adjuster (103) is provided on the top of the scraper (102). A rotating assembly (200) is disposed on the regulator (103) and includes a rotating component (201). The rotating component (201) includes a first bevel gear (2011), which is sleeved on the outside of the regulator (103). A second bevel gear (2012) is disposed on one side of the first bevel gear (2011), and a rotating column (2013) is fixed on one side of the second bevel gear (2012). A connecting sleeve (2014) is disposed at one end of the rotating column (2013).

2. The surface coating apparatus for protecting film processing according to claim 1, wherein: The rotating assembly (200) also includes a limiting member (202), which includes a limiting frame (2021). The limiting frame (2021) is sleeved on the outside of the rotating column (2013). A positioning post (2022) is provided at the bottom of the limiting frame (2021), and a pressure rod (2023) is provided on one side of the limiting frame (2021).

3. The surface coating apparatus for protective film processing as described in claim 2, characterized in that: A positioning plate (2024) is sleeved on the outside of the positioning post (2022), and a first spring (2025) is fixed on the top of the positioning plate (2024). One end of the first spring (2025) is fixed to the bottom of the limiting frame (2021).

4. The surface coating apparatus for protective film processing as described in claim 3, characterized in that: A movable bar (2026) is fixed to one side of the pressure rod (2023), and a movable sleeve (2027) is fixed to one end of the movable bar (2026). A drive column (2028) is rotatably connected inside the movable sleeve (2027). The drive column (2028) is inserted into one side of the connecting sleeve (2014), and the drive column (2028) and the connecting sleeve (2014) are movably connected.

5. The surface coating apparatus for protective film processing as described in claim 4, characterized in that: The rotating assembly (200) further includes a connector (203), which includes a chuck (2031) fixed to one end of the drive column (2028). A sleeve (2032) is provided on one side of the chuck (2031) and the sleeve (2032) is fixed to one end of the rotating column (2013).

6. The surface coating apparatus for protective film processing as described in claim 5, characterized in that: A positioning frame (2033) is movably connected to the outside of the rotating column (2013), a positioning plate (2034) is movably connected to the outside of the driving column (2028), a positioning block (2035) is movably connected to the outside of the connecting sleeve (2014), and a protective box (2036) is sleeved on the outside of the positioning block (2035).

7. The surface coating apparatus for protective film processing as described in claim 6, characterized in that: The rotating assembly (200) further includes a moving part (204), which includes a drive ring (2041). The drive ring (2041) is rotatably connected to the drive column (2028) via a rotating shaft. A locking block (2042) is fixed on one side of the drive ring (2041), and an inclined block (2043) is provided on one side of the locking block (2042).

8. The surface coating apparatus for protective film processing as described in claim 7, characterized in that: A second spring (2044) is fixed to one side of the inclined block (2043), and one end of the second spring (2044) is fixed to the inner wall of the protective box (2036).

9. The surface coating apparatus for protective film processing as described in claim 8, characterized in that: The bottom of the inclined block (2043) is fixed with an extrusion block (2045), and an extrusion plate (2046) is fixed on one side of the extrusion block (2045).

10. The surface coating apparatus for protective film processing as described in claim 9, characterized in that: A drive block (2047) is fixed on one side of the card block (2042), a connecting block (2048) is provided on the top of the drive block (2047), and a connecting plate (2049) is fixed on one side of the connecting block (2048).