An adjustable film applicator

Abstract

This utility model relates to an adjustable laminating machine, including a base; multiple material shafts rotatably connected to the base, each material shaft connected to a synchronous pulley, the synchronous pulleys being driven by a synchronous belt; and an adjustment assembly including fasteners, elastic elements, and brake components. The fasteners are threadedly connected to the material shafts, the elastic elements and brake pads are sleeved on the material shafts, the brake pads are located on both sides of the synchronous pulleys and abut against the synchronous pulleys, and the two ends of the elastic element abut against the fasteners and brake components respectively. This utility model overcomes the inertia of the film roll by adjusting the rotational speed of the material shafts through the adjustment assembly, reducing wrinkles or stretching caused by film tension fluctuations, thereby improving laminating accuracy.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, and in particular to an adjustable coating machine. Background Technology

[0002] Before cutting glass sheets, a laminating machine typically applies a layer of adhesive film to their surface. This film helps to better hold the glass sheets in place, reducing positional shifts during cutting. It also prevents scratches during transport. Marking the date and model number on the film provides identification and categorization, facilitating subsequent management and use. Laminating machines usually consist of a film feeding shaft and a material receiving shaft. During lamination, the film roll head needs to be manually pulled and its movement speed controlled. However, manual pulling has limited control over the head's movement speed, and the film roll rotation speed is inconsistent with the film output speed. This can cause tension fluctuations in the adhesive film during traction. If the film is fed too quickly, it can easily loosen, wrinkle, or shift; conversely, it may be overstretched or even break. Tension imbalance not only wastes material but also creates bonding bubbles, reducing lamination accuracy and yield. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the adhesive film is prone to tension fluctuations during the traction process in the prior art, and the adhesive film is prone to loosening or overstretching, resulting in a decrease in the coating accuracy. In this way, an adjustable coating machine is provided, which can overcome the inertia of the film roll by adjusting the rotation speed of the material shaft through the adjustment component, reduce wrinkles or stretching caused by the tension fluctuation of the adhesive film, and thus improve the coating accuracy.

[0004] To solve the above-mentioned technical problems, this utility model provides an adjustable laminating machine, comprising:

[0005] Base;

[0006] Multiple material shafts are rotatably connected to the base, and each of the multiple material shafts is connected to a synchronous pulley, which is driven by a synchronous belt.

[0007] An adjusting assembly includes a fastener, an elastic element, and a brake. The fastener is threadedly connected to the material shaft. The elastic element and the brake pad are both sleeved on the material shaft. The brake pad is located on both sides of the synchronous pulley and abuts against the synchronous pulley. The two ends of the elastic element abut against the fastener and the brake, respectively.

[0008] In one embodiment of this utility model, the plurality of material shafts include a first material shaft and a second material shaft arranged in parallel. The first material shaft is coaxially connected to an air expansion shaft, and the second material shaft is coaxially connected to a take-up roller. The air expansion shaft is located above the take-up roller.

[0009] In one embodiment of the present invention, a pressing member is further provided with a plug-in section and a pressing section. The plug-in section is connected to the end face of the take-up roller, and the peripheral side of the take-up roller is provided with a groove extending along its axial direction. The pressing section is located in the groove.

[0010] In one embodiment of this utility model, the end face of the receiving roller is provided with an insertion hole, and the insertion segment is inserted into the insertion hole.

[0011] In one embodiment of this utility model, both the pressing section and the insertion section are provided with guide heads at their ends, and the guide heads are configured as hemispherical.

[0012] In one embodiment of the present invention, a fixed workbench and a movable workbench are further disposed on the base. The movable workbench is disposed higher than the fixed workbench. The fixed workbench is provided with a clearance opening. The movable workbench is movably connected to the base and is located within the clearance opening.

[0013] In one embodiment of the present invention, the fixed worktable is provided with a boss that is higher than the movable worktable, and the boss is provided with an inclined surface extending along the width direction of the adhesive film.

[0014] In one embodiment of this utility model, at least four elastic elements are arranged between the movable worktable and the base, and the two ends of the elastic elements respectively abut against the movable worktable and the base.

[0015] In one embodiment of the present invention, a film pressing assembly is further provided on one side of the material shaft. The film pressing assembly includes a bracket movably connected to the base and a film-coating roller rotatably connected to the bracket. The film-coating roller is positioned higher than the movable worktable.

[0016] In one embodiment of this utility model, the fixed workbench is provided with limiting protrusions on both sides, and the bracket is provided with recesses on both sides. The limiting protrusions are positioned directly opposite the recesses along the moving direction of the bracket.

[0017] In one embodiment of the present invention, the base includes a base plate and an upright plate connected to the base plate, and the material shaft is rotatably connected to the upright plate.

[0018] In one embodiment of this utility model, the base plate is provided with a slide rail, the bracket is slidably connected to the slide rail by a slider, the film pressing assembly further includes a cylinder and a connecting arm movably connected to the bracket, the cylinder drives the connecting arm to rise and fall, and the two ends of the film pressing roller are rotatably connected to the connecting arm.

[0019] In one embodiment of the present invention, a cover hinged to the base is further included, and the material shaft is disposed inside the cover.

[0020] In one embodiment of the present invention, a first flattening roller and a second flattening roller are rotatably connected to the base. The first flattening roller and the second flattening roller are arranged vertically opposite each other, and the gap between the first flattening roller and the second flattening roller is flush with the movable worktable.

[0021] In one embodiment of this invention, the coating roller is located above the gap.

[0022] In one embodiment of the present invention, the fixed worktable is provided with a knife receiving groove and a clearance groove passing through the knife receiving groove. The knife receiving groove is disposed between the movable worktable and the film coating roller, and the knife receiving groove extends along the width direction, and the width of the knife receiving groove is smaller than the width of the clearance groove.

[0023] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0024] The adjustable laminating machine of this invention adjusts the elastic force of the elastic element by tightening or loosening the fasteners, thereby changing the friction between the synchronous wheel and the brake and controlling the rotational speed of the material shaft. This overcomes the rotational inertia of the film roll on the material shaft and reduces film tension fluctuations. Multiple material shafts are used for film feeding and waste material collection, respectively. The synchronous belt and synchronous wheel drive the rotation of multiple material shafts, allowing the fasteners to control the rotational speed of multiple material shafts simultaneously, ensuring that the film feeding speed and waste material collection speed are matched. Attached Figure Description

[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the adjustable film-coating machine in a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 The diagram shows the structure of an adjustable laminating machine without a movable worktable.

[0028] Figure 3 for Figure 1 The cross-sectional view of the adjustable laminating machine shown is a structural schematic diagram.

[0029] Figure 4 This is a schematic diagram of the adjustable film-coating machine in another preferred embodiment of the present invention;

[0030] Figure 5 for Figure 1 The diagram shows the structure of the movable workbench.

[0031] Figure 6 for Figure 1 The diagram shows the structure of the receiving roller;

[0032] Figure 7 for Figure 1 The diagram shows the structure of the pressure component.

[0033] Explanation of reference numerals in the accompanying drawings: 1. Base; 11. Base plate; 12. Vertical plate; 111. First guide cylinder; 112. Support column; 113. Slide rail; 2. Second material shaft; 21. First material shaft; 22. Film roll; 23. Take-up roller; 231. Groove; 232. Insertion hole; 24. Air shaft; 3. First synchronous pulley; 31. Second synchronous pulley; 32. Synchronous belt; 4. Fastener; 41. Elastic element; 42. First brake component; 43. Drive plate; 44. Second brake component; 5. Pressing component; 51. 52. Connecting section; 53. Pressing section; 54. Insertion section; 6a. Guide head; 6a. Movable worktable; 6a1. Second guide cylinder; 6a2. Limiting plate; 6a3. Knife groove; 6a4. Clearance groove; 6b. Fixed worktable; 6b1. Clearance opening; 6b2. Limiting protrusion; 7. Boss; 71. Inclined surface; 8. Bracket; 81. Connecting arm; 83. Coating roller; 84. Cylinder; 85. Second flattening roller; 86. First flattening roller; 87. Recess; 88. Tensioning wheel; 9. Cover; 91. Hinge. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0035] Reference Figure 1 and Figure 3 As shown, in one embodiment of this utility model, an adjustable laminating machine is disclosed, which is used to apply adhesive film to a glass slide. The laminating machine includes...

[0036] Base 1;

[0037] Multiple material shafts are rotatably connected to the base 1, and each of the multiple material shafts is connected to a synchronous pulley, which is driven by a synchronous belt 32.

[0038] The adjusting assembly includes a fastener 4, an elastic element 41, and a brake. The fastener 4 is threadedly connected to the material shaft. The elastic element 41 and the brake pads are both sleeved on the material shaft. The brake pads are located on both sides of the synchronous pulley and abut against the synchronous pulley. The two ends of the elastic element 41 abut against the fastener 4 and the brake, respectively.

[0039] The adjustable laminating machine described in this embodiment adjusts the friction between the synchronous wheel and the brake to overcome the inertia of the film roll 22 and change the rotational speed of the material shaft. This ensures that the unloading speed of the film roll 22 matches the output speed of the adhesive film, reducing tension fluctuations in the adhesive film. When it is necessary to increase the unloading speed of the film roll 22, the fastener 4 can be loosened to reduce the elastic force of the elastic element 41, thereby reducing the friction between the brake and the synchronous wheel, releasing the inertia of the material shaft, and reducing the rotational frictional resistance of the material shaft. When it is necessary to decrease the unloading speed of the film roll 22, the fastener 4 can be tightened to further press the brake with the elastic element 41, thereby increasing the friction between the brake and the synchronous wheel, suppressing the inertia of the material shaft, and increasing the rotational frictional resistance of the material shaft.

[0040] Reference Figure 1 As shown, in one embodiment of this utility model, the plurality of material shafts include a first material shaft 21 and a second material shaft 2 arranged in parallel. The first material shaft 21 is coaxially connected to an air expansion shaft 24. The film roll 22 is sleeved on the air expansion shaft 24. The air expansion shaft 24 uses its own expansion and contraction to fix and release the film roll 22. The second material shaft 2 is coaxially connected to a take-up roller 23. The take-up roller 23 is used to take up the waste material (release layer) that has detached from the adhesive film. The first material shaft 21 is connected to a first synchronous wheel 3, and the second material shaft 2 is connected to a second synchronous wheel 31. The first synchronous wheel 3 and the second synchronous wheel 31 are driven by a synchronous belt 32, thereby realizing the synchronous rotation of the first material shaft 21 and the second material shaft 2. This ensures that the film release speed is synchronized with the waste material recovery speed, and avoids the accumulation or tightness of the adhesive film and waste material due to the difference in the release / take-up speed. The air expansion shaft 24 is located above the take-up roller 23. When the waste material detaches from the adhesive film, it moves downward and is wound on the take-up roller 23 below. Gravity can be used to assist the waste material to fall naturally.

[0041] Reference Figure 1 and Figure 3 As shown, in one embodiment of this utility model, the adjustment component is connected to only one of the first material shaft 21 and the second material shaft 2. The adjustment component is preferentially connected to the second material shaft 2, that is, the brake abuts against the second synchronous wheel 31, and the inertia of the second synchronous wheel 31 is adjusted by tightening the fastener 4.

[0042] Reference Figure 3 As shown, in one embodiment of this utility model, the fastener 4 is preferably a nut, the fastener 4 is threadedly connected to the threaded section on the second material shaft 2, the brake is set as an annular plate brake pad, and the elastic element 41 is preferably a spring.

[0043] Reference Figure 3As shown, in one embodiment of the present invention, the brake component includes a first brake component 42 and a second brake component 44 located on both sides of the second synchronous wheel 31, wherein the first brake component 42 is pressed against one end of the elastic element 41, and the second brake component 44 is tightly disposed between the second synchronous wheel 31 and the drive plate 43, and the drive plate 43 is connected to the second material shaft 2 for driving the second material shaft 2 to rotate.

[0044] Reference Figure 6 and Figure 7 As shown, in one embodiment of this utility model, a pressing member 5 is further provided with a plug-in section 53 and a pressing section 52. The pressing section 52 is used to press the head of the waste material onto the surface of the take-up roller 23 to ensure that the take-up roller 23 can smoothly take up the waste material. The plug-in section 53 is connected to the end face of the take-up roller 23 so that the pressing member 5 rotates synchronously with the take-up roller 23. The peripheral side of the take-up roller 23 is provided with a groove 231 extending along its axial direction. The pressing section 52 is located in the groove 231. The pressing section 52 presses the head of the waste material into the groove 231, reducing the risk of the waste material head falling off.

[0045] Reference Figure 2 and Figure 6 As shown, in one embodiment of this utility model, the end face of the receiving roller 23 is provided with an insertion hole 232, and the insertion segment 53 is inserted into the insertion hole 232 to realize the quick connection and disassembly of the pressing component 5 and the receiving roller 23. At the same time as the insertion segment 53 is inserted into the insertion hole 232, the pressing segment 52 is precisely inserted into the groove 231 to press the waste material head tightly.

[0046] Reference Figure 7 As shown, in one embodiment of this utility model, the insertion section 53 and the pressing section 52 are arranged in parallel and are connected by a "U"-shaped connecting section 51.

[0047] Reference Figure 7 As shown, in one embodiment of this utility model, both the pressing section 52 and the insertion section 53 are provided with guide heads 54 at their ends. The guide heads 54 are both hemispherical. The pressing section 52 is inserted into the groove 231, and the hemispherical guide head 54 of the pressing section 52 can prevent the waste material from being pushed out of the groove 231. The hemispherical guide head 54 of the insertion section 53 can be accurately inserted into the insertion hole 232. The insertion section 53 and the insertion hole 232 are in clearance fit.

[0048] Reference Figure 1 , Figure 2 and Figure 5As shown, in one embodiment of this utility model, a fixed worktable 6b and a movable worktable 6a are further disposed on the base 1. The fixed worktable 6b is used to support and fix a steel ring, which is adhered to the edge of the adhesive film. The movable worktable 6a is used to support and fix a glass sheet to be coated with film. The surface of the movable worktable 6a is higher than that of the fixed worktable 6b. The fixed worktable 6b is provided with a clearance opening 6b1, and the movable worktable 6a is located within the clearance opening 6b1. When the steel ring is placed on the fixed worktable 6b... The clearance 6b1 is concentric with the inner hole of the steel ring. After the glass sheet is fixed on the movable worktable 6a, the glass sheet is located at the center of the inner hole of the steel ring and is higher than the steel ring. When applying the film, the center of the film first adheres to the glass sheet, and the edge of the film finally adheres to the steel ring, so that the film maintains appropriate tension. Finally, the film, the glass sheet and the steel ring are connected as a whole. The movable worktable 6a is movably connected to the base 1. When the film is pressed down, the movable worktable 6a can be slightly lowered relative to the fixed worktable 6b to buffer the pressure and prevent the glass sheet from breaking.

[0049] Reference Figure 2 As shown, in one embodiment of this utility model, the fixed worktable 6b is provided with a boss 7 that is higher than the movable worktable 6a. The boss 7 is located at one end of the fixed worktable 6b along the traction direction of the adhesive film. The boss 7 is provided with an inclined surface 71 that extends along the width direction of the adhesive film. After the adhesive film is pulled to completely cover the steel ring, the end of the adhesive film is attached to the inclined surface 71 to ensure the tension of the adhesive film and to ensure that there is a sufficient gap between the adhesive film and the glass sheet, so as to avoid the adhesive film directly contacting the glass sheet locally and causing the film to form bubbles.

[0050] Reference Figure 2 As shown, in one embodiment of this utility model, four first guide cylinders 111 are arrayed on the base plate 11, and four second guide cylinders 6a16a1 are arrayed on the bottom of the movable worktable 6a. The first guide cylinders 111 and the second guide cylinders 6a16a1 are arranged in a one-to-one correspondence, and the second guide cylinders 6a16a1 are tightly and movably sleeved on the outside of the first guide cylinders 111, for precise lifting and lowering of the movable worktable 6a.

[0051] Reference Figure 7 As shown, in one embodiment of this utility model, the fixed workbench 6b is fixed above the base plate 11 by a support column 112.

[0052] Reference Figure 4As shown, in one embodiment of this utility model, at least four elastic elements 41 are arrayed between the movable worktable 6a and the base 1. The multiple elastic elements 41 are symmetrically arranged on both sides of the movable worktable 6a along the moving direction of the film-coating roller 83. During film coating, the front and rear ends of the movable worktable 6a are pressed sequentially. The purpose of the symmetrical arrangement is to ensure that the end of the movable worktable 6a subjected to force can descend evenly, and to ensure that the initial contact point between the film and the glass sheet forms a continuous straight line. The elastic elements 41 are arranged in the first guide cylinder 111 and the second guide cylinder 6a16a1, and the two ends of the elastic elements 41 respectively abut against the movable worktable 6a and the base 1. When the movable worktable 6a receives pressure and descends, the elastic elements 41 immediately buffer it.

[0053] Reference Figure 1 As shown, in one embodiment of this utility model, a film pressing assembly is also provided on one side of the material shaft. The film pressing assembly includes a bracket 8 movably connected to the base 1 and a film-coating roller 83 rotatably connected to the bracket 8. The film-coating roller 83 is set higher than the movable worktable 6a. After the film is in place, the operator can push the bracket 8 to move, so that the film-coating roller 83 rolls over the film and the film is evenly pressed onto the glass sheet and steel ring.

[0054] Reference Figure 1 and Figure 2 As shown, in one embodiment of this utility model, the fixed worktable 6b is provided with limiting protrusions 6b2 on both sides, and the bracket 8 is provided with recesses 87 on both sides. The limiting protrusions 6b2 are set directly opposite the recesses 87 along the moving direction of the bracket 8. When the bracket 8 moves to the edge of the fixed worktable 6b, the limiting protrusions 6b2 passively enter the recesses 87 to stop the bracket 8, preventing the bracket 8 from detaching from the base 1. The recesses 87 ensure that the bracket 8 is tightly engaged with the limiting protrusions.

[0055] Reference Figure 2 As shown, in one embodiment of the present invention, the base 1 includes a base plate 11 and an upright plate 12 connected to the base plate 11, and the material shaft is rotatably connected to the upright plate 12.

[0056] Reference Figure 2 As shown, in one embodiment of the present invention, a tensioning wheel 88 for adjusting the tension of the timing belt 32 is movably disposed on the upright plate 12, and the tensioning wheel 88 abuts against the timing belt 32.

[0057] Reference Figure 1As shown, in one embodiment of this utility model, the base plate 11 is provided with a slide rail 113, the bracket 8 is slidably connected to the slide rail 113 by a slider, the film pressing assembly also includes a cylinder 84 disposed on the bracket 8 and a connecting arm 81 movably connected to the bracket 8, the two ends of the film pressing roller 83 are rotatably connected to the connecting arm 81, the cylinder 84 drives the connecting arm 81 and the film pressing roller 83 to rise and fall, thereby adjusting the film pressing force of the film pressing roller 83.

[0058] Reference Figure 4 As shown, in one embodiment of this utility model, a cover 9 is also included, which is hinged to the base 1 by a hinge 91. The material shaft is disposed inside the cover 9. The cover 9 is used to prevent debris from sticking to the adhesive film and causing adhesive film contamination. It can also be used to quickly install the film roll 22 and remove waste material by opening the cover 9.

[0059] Reference Figure 2 As shown, in one embodiment of this utility model, a first flattening roller 86 and a second flattening roller 85 are rotatably connected to the base 1. The first flattening roller 86 and the second flattening roller 85 are arranged vertically opposite each other. The axes of the first flattening roller 86, the second flattening roller 85, the film coating roller 83, and the material shaft are all parallel. After the film roll 22 is pulled out, the film head first passes through the gap between the first flattening roller 86 and the second flattening roller 85 to achieve flattening, and then is pulled to the top of the glass sheet and the steel ring. The gap between the first flattening roller 86 and the second flattening roller 85 is flush with the movable worktable 6a. After the film passes through the gap, it is continuously conveyed in the horizontal direction and horizontally covers the top of the glass sheet and the steel ring.

[0060] In one embodiment of the present invention, the coating roller 83 is located above the gap, and after the film is flattened, it is pressed onto the glass sheet and steel ring by the coating roller 83 above.

[0061] Reference Figure 1 As shown, in one embodiment of this utility model, the fixed worktable 6b is provided with a knife-receiving groove 6a3 and a clearance groove 6a4 passing through the knife-receiving groove 6a3. The knife-receiving groove 6a3 is disposed between the movable worktable 6a and the film-coating roller 83, and the knife-receiving groove 6a3 extends along the width direction. The width of the knife-receiving groove 6a3 is smaller than the width of the clearance groove 6a4. The knife-receiving groove 6a3 is used to cooperate with the cutter to cut the coated film and film roll 22, preventing the cutter from directly contacting the fixed worktable 6b and causing passivation. When the film is cut, part of it sticks to the bottom of the knife-receiving groove 6a3. The clearance groove 6a4 allows fingers to be inserted to remove the film from the bottom of the knife-receiving groove 6a3.

[0062] Reference Figure 1As shown, in one embodiment of the present invention, the edge of the movable worktable 6a is connected to an annular limiting plate 6a2, which abuts against the bottom of the fixed worktable 6b to limit the movable worktable 6a and prevent the movable worktable 6a from completely passing through the clearance opening 6b1.

[0063] The working principle of the adjustable film-coating machine described in this utility model is as follows:

[0064] The film roll 22 is fitted onto the air shaft 24, which expands to secure the roll. Waste material is torn and attached to the take-up roller 23. The material head is pressed down using the pressing component 5. Then, the film head is passed through the gap. The inertia of the take-up roller 23 and the film roll 22 is adjusted by the adjusting component to match the film traction speed. After the steel ring and glass sheet are in place, the operator begins to pull the film. At the same time, the film roll 22 and the take-up roller 23 begin to rotate synchronously to release the film and collect the waste material respectively, until the film completely covers the steel ring and glass sheet. The material head is then attached to the inclined surface 71. Next, the operator pushes the bracket 8 from one end of the fixed workbench 6b to the other end. The film coating roller 83 presses the film onto the steel ring and glass sheet to complete the film coating. Finally, the operator cuts the film, resets the bracket 8, removes the steel ring, and prepares for the next film coating operation.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An adjustable film applicator, characterized by, include, Base; Multiple material shafts are rotatably connected to the base, and each of the multiple material shafts is connected to a synchronous pulley, which is driven by a synchronous belt. An adjusting assembly includes a fastener, an elastic element, and a brake. The fastener is threadedly connected to the material shaft. The elastic element and the brake are both sleeved on the material shaft. The brake is located on both sides of the synchronous pulley and abuts against the synchronous pulley. The two ends of the elastic element abut against the fastener and the brake, respectively.

2. The adjustable coating machine according to claim 1, characterized in that, The plurality of material shafts include a first material shaft and a second material shaft arranged in parallel. The first material shaft is coaxially connected to an air expansion shaft, and the second material shaft is coaxially connected to a take-up roller. The air expansion shaft is located above the take-up roller.

3. An adjustable coating machine according to claim 2, characterized in that, It also includes a pressing component with a plug-in section and a pressing section. The plug-in section is connected to the end face of the take-up roller. The circumferential side of the take-up roller is provided with a groove extending along its axial direction, and the pressing section is located in the groove.

4. An adjustable coating machine according to claim 3, characterized in that, The end face of the receiving roller is provided with an insertion hole, and the insertion section is inserted into the insertion hole.

5. An adjustable coating machine according to claim 3, characterized in that, Both the pressing section and the insertion section are provided with guide heads at their ends, and the guide heads are configured as hemispherical.

6. An adjustable coating machine according to claim 1, characterized in that, It also includes a fixed worktable and a movable worktable disposed on the base. The movable worktable is disposed higher than the fixed worktable. The fixed worktable is provided with a clearance opening. The movable worktable is movably connected to the base and is located within the clearance opening.

7. An adjustable coating machine according to claim 6, characterized in that, The fixed worktable has a boss that is higher than the movable worktable, and the boss has an inclined surface that extends along the width direction of the adhesive film.

8. An adjustable coating machine according to claim 6, characterized in that, At least four elastic elements are arranged between the movable worktable and the base, and the two ends of the elastic elements respectively abut against the movable worktable and the base.

9. An adjustable coating machine according to claim 6, characterized in that, It also includes a film pressing assembly disposed on one side of the material shaft. The film pressing assembly includes a bracket movably connected to the base and a film-coating roller rotatably connected to the bracket. The film-coating roller is disposed above the movable worktable.

10. An adjustable coating machine according to claim 9, characterized in that, The fixed workbench is provided with limiting protrusions on both sides, and the bracket is provided with recesses on both sides. The limiting protrusions are positioned directly opposite the recesses along the moving direction of the bracket.

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