Soft film coating and laminating process

Abstract

The invention relates to the technical field of coating, in particular to a soft film coating and laminating process which comprises the following steps: A, unwinding a soft film, and dedusting the soft film; b, the soft film subjected to dust removal is transferred to the position between a pressing roller and a coating mechanism to be coated; in the coating process, the protective belt abuts against the position between the soft film and the pressing roller so as to avoid direct contact between the pressing roller and the soft film; c, carrying out curing treatment on the coated soft film; d, attaching a protective film to the cured soft film; and E, rolling the soft film attached with the protective film. Through the arrangement of the protection belt, the protection belt is arranged between the soft film and the pressing roller, the effect of protecting the soft film is achieved on the basis that the protection belt has certain softness, and the situation that the pressing roller makes direct contact with the soft film, and consequently the soft film deforms and even fractures is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coating, and in particular to a soft film coating and laminating process. Background Art

[0002] For films with high softness, protection is required during the coating process to prevent the film from deforming or even breaking. However, for existing pressure rollers, due to their high hardness and large frictional force, when the film directly contacts the pressure roller, it is likely to cause the film to deform or even break, which is not conducive to the continuous execution of automated coating. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a soft film coating and laminating process, which avoids the deformation of the soft film by indirectly contacting the pressure roller with the soft film.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A soft film coating and laminating process provided by the present invention includes the following steps:

[0006] A. Unwind the soft film and remove dust from the soft film.

[0007] B. Transfer the dust-removed soft film between the pressure roller and the coating mechanism for coating; during the coating process, use a protective belt to contact between the soft film and the pressure roller to prevent the pressure roller from directly contacting the soft film.

[0008] C. Cure the coated soft film.

[0009] D. Laminating a protective film on the cured soft film.

[0010] E. Wind up the soft film after laminating the protective film.

[0011] Further, a coating unit for performing step B is provided. The coating unit includes a pressure roller, a coating mechanism, a protective belt, a driving mechanism, an adjusting mechanism, and an angle adjusting mechanism. A coating gap for the soft film to pass through and be coated is formed between the pressure roller and the coating mechanism. The driving mechanism is used to drive the protective belt to move through the coating gap, and the adjusting mechanism is used to drive the coating mechanism to flip.

[0012] The angle adjusting mechanism is used to adjust the angle at which the soft film enters the coating gap.

[0013] Furthermore, the angle adjusting mechanism includes an angle adjusting driving member and an angle adjusting roller. The angle adjusting roller is located directly above the pressure roller, and the angle adjusting driving member is used to drive the angle adjusting roller to move up and down.

[0014] Step B specifically includes:

[0015] B1. According to the characteristics of the soft film, drive the angle adjusting roller to move up and down through the angle adjusting driving member.

[0016] B2. The driving mechanism drives the protective belt to contact the pressure roller and enters and passes through the coating gap along with the traction of the pressure roller;

[0017] B3. After being guided by the angle-adjusting roller, the soft film moves at an angle α to contact the protective belt and enters the coating gap under the drive of the protective belt;

[0018] B4. The coating mechanism performs a coating process on the soft film within the coating gap;

[0019] B5. The soft film leaves the coating gap.

[0020] Furthermore, the number of the protective belts and the driving mechanisms is two each, and the two driving mechanisms are drivingly connected to the two protective belts one by one; the driving mechanism has a tension floating roller, and the tension floating roller contacts the protective belt;

[0021] The two protective belts are arranged at intervals, and the two protective belts are respectively used to contact both sides of the same surface of the soft film;

[0022] In step B4, when the coating mechanism performs a coating process on the soft film, the force applied to the soft film by the coating mechanism is released by making way through the holes between the two protective belts, so as to prevent the soft film from breaking due to excessive force.

[0023] Furthermore, the coating mechanism includes a coating shell, a material storage tank, a coating translation module and a plurality of coating small rollers. The material storage tank is used to store the adhesive material. The material storage tank is arranged inside the coating shell. The material storage tank has a coating arc groove whose shape is adapted to the pressure roller. The plurality of coating small rollers are arranged at intervals along the path of the coating arc groove. The coating small rollers are used to dip the coating material in the material storage tank and coat the coating material onto the soft film. The adjusting mechanism is drivingly connected to the coating shell. The coating shell is rotatably arranged at the output end of the coating translation module. The coating translation module is used to drive the coating shell to translate so that the coating shell approaches or moves away from the pressure roller;

[0024] The coating arc groove has a plurality of discharge ports, and the plurality of discharge ports are all communicated with the material storage tank. The plurality of discharge ports are arranged in one-to-one correspondence with the plurality of coating small rollers.

[0025] Further, step C specifically includes:

[0026] C1. Using the first curing mechanism to perform a primary curing process on the soft film;

[0027] C2. Obtaining the surface image of the soft film after the primary curing process;

[0028] C3. Analyzing the color, texture and thickness of the surface image of the soft film to judge the curing state of the soft film;

[0029] C4. Adjusting the second curing mechanism according to the curing state of the soft film;

[0030] C5. Then, the second curing mechanism is used to perform secondary curing on the soft film.

[0031] Furthermore, the second curing mechanism includes a curing body, UV lamps, a power controller, and a lifting module, all of which are arranged on the curing body. The power controller is used to control the output power of the curing body, and the lifting module is used to drive the UV lamps to lift and lower.

[0032] Step C4 specifically includes:

[0033] C41. According to the curing state of the soft film, calculate the UV lamp power W' required for the secondary curing of the soft film.

[0034] C42. Compare W' with the working power range W0 of the UV lamp. If W' is within the working power range W0, then control the output power of the UV lamp to be adjusted to W' through the power controller; otherwise, execute step C43.

[0035] C43. Calculate the power difference △W through △W = W' - W0, calculate the compensation distance △h according to △h = k * △W, and calculate the actual distance h' according to h' = h + △h.

[0036] C44. Then, use the lifting module to drive the UV lamp to lift and lower so that the distance between the UV lamp and the soft film is adjusted to h'.

[0037] Wherein, k is a constant greater than 0, and h is the reference distance between the UV lamp and the soft film.

[0038] Furthermore, after executing steps C43 - C44, adjust the working power range W0 to W according to h', and then continuously execute steps C41 - C42.

[0039] The number of the UV lamps is two. Each of the two UV lamps is connected to a power controller, and the lifting module is used to drive the two UV lamps to lift and lower simultaneously.

[0040] Furthermore, the second curing mechanism further includes a heat dissipation module, and the heat dissipation module is used to dissipate heat inside the curing body.

[0041] Step C4 further includes:

[0042] Obtain the real-time temperature T inside the curing body and the required temperature range T' for the soft film curing.

[0043] Compare T with T'. If T is within T', then execute steps C41 - C42.

[0044] If T is greater than the maximum value of T', then control the heat dissipation module to work, and adjust the output power of both UV lamps to k' * W, and use the two UV lamps to irradiate the soft film successively.

[0045] If T is less than the minimum value of T', the heat dissipation module stops working, and the output powers of both UV lamps are adjusted to k" * W, and then the two UV lamps are driven to rise by the lifting module according to k" * W;

[0046] Wherein, both k' and k" are constants, and the value range of k' is 0.5 - 0.8, and the value range of k" is 1.1 - 1.3.

[0047] Further, a film feeding mechanism for executing step E is provided, and the number of film feeding mechanisms is two; the film feeding mechanism includes a film feeding module, a clamping module, a film feeding driving member, a film feeding tension detector, a film feeding member, and a film feeding tension roller. The film feeding module is used for assembling the material roll of the protective film, the clamping module is used for positioning the material roll to the film feeding module, the film feeding tension detector is used for detecting the tension of the protective film of the base film, one end of the film feeding member is rotatably installed on the film feeding mechanism, the film feeding tension roller is installed at the other end of the film feeding member, and the film feeding driving member is used for driving the film feeding member to rotate;

[0048] The operation steps of the film feeding mechanism specifically include:

[0049] Y1. Release the protective film through the film feeding module;

[0050] Y2. During the process of releasing the protective film, detect the current tension F of the protective film through the film feeding tension detector;

[0051] Y3. Provide a preset tension F0, and calculate the tension difference F' according to F' = F - F0;

[0052] Y4. Take the absolute value of the tension difference F', and judge whether |F'| is within the preset range. If so, execute step Y5, otherwise execute step Y6;

[0053] Y5. Calculate the rotation path length S of the film feeding member according to S = k * F', and drive the film feeding member to rotate by the film feeding driving member according to S;

[0054] Y6. The film feeding driving member does not drive the film feeding member to rotate;

[0055] Wherein, when S > 0, the film feeding member rotates counterclockwise; when S < 0, the film feeding member rotates clockwise.

[0056] The beneficial effects of the present invention: Through the setting of the protection belt, the protection belt is arranged between the soft film and the pressing roller, and based on the certain softness of the protection belt, the effect of protecting the soft film is achieved, avoiding the soft film from being deformed or even broken due to the direct contact between the pressing roller and the soft film. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a flow schematic diagram of the present invention.

[0058] Figure 2 It is a schematic diagram of the system applying the present invention.

[0059] Figure 3 It is a schematic diagram of the coating unit of the present invention.

[0060] Figure 4 It is Figure 3 an enlarged view of part A of

[0061] Figure 5 It is a schematic diagram of the second curing mechanism of the present invention.

[0062] Figure 6 It is a schematic diagram of the film feeding mechanism of the present invention.

[0063] Figure 7 It is a schematic diagram of the laminating mechanism of the present invention.

[0064] Figure 8 It is Figure 7 an enlarged view of part B of

[0065] Reference numerals: 1 - unwind mechanism, 2 - coating unit, 3 - first curing mechanism, 4 - second curing mechanism, 5 - film feeding mechanism, 6 - laminating mechanism, 7 - winding mechanism, 20 - coating machine body, 21 - pressure roller, 22 - coating mechanism, 23 - protective tape, 24 - driving mechanism, 25 - adjusting mechanism, 26 - angle adjusting mechanism, 27 - coating gap, 41 - curing machine body, 42 - UV lamp, 43 - power controller, 44 - lifting module, 45 - heat dissipation module, 46 - camera module, 51 - film feeding module, 52 - clamping module, 53 - film feeding driving part, 54 - film feeding tension detector, 55 - film feeding part, 56 - film feeding tension roller, 61 - laminating machine body, 62 - laminating guide roller, 63 - laminating lifting module, 64 - first laminating roller, 65 - second laminating roller, 66 - laminating flipping part, 67 - laminating control block, 68 - laminating translation module, 221 - coating shell, 222 - storage tank, 223 - coating translation module, 224 - coating small roller, 225 - discharge port, 241 - tension floating roller, 261 - angle adjusting driving part, 262 - angle adjusting roller, 521 - clamping swinging part, 522 - clamping cylinder, 523 - locking block, 524 - clamping groove, 661 - abutting wheel, 671 - laminating inclined plane. Detailed implementation manners

[0066] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0067] As Figures 1 to 8 shown, a soft film coating and laminating process provided by the present invention includes the following steps:

[0068] A. Unwind the soft film and remove dust from the soft film;

[0069] B. Transfer the dust-removed soft film to the space between the pressure roller 21 and the coating mechanism 22 for coating; during the coating process, use the protective belt 23 to abut between the soft film and the pressure roller 21 to prevent the pressure roller 21 from directly contacting the soft film;

[0070] C. Cure the coated soft film;

[0071] D. Bond the protective film to the cured soft film;

[0072] E. Wind up the soft film after bonding the protective film.

[0073] If the system implementing the present invention is used, there is an unwinding mechanism 1 for implementing step A, a coating unit 2 for implementing step B, a curing unit for implementing step C, a bonding unit for implementing step D, and a winding unit for implementing step E. In the coating unit 2, the protective belt 23 is wound around the pressure roller 21 so that the soft film contacts the protective belt 23 instead of the pressure roller 21 during coating. Since the protective belt 23 is preferably a belt, it will not overly stretch the soft film due to excessive hardness, thus effectively reducing the occurrence of soft film deformation or even breakage.

[0074] In this embodiment, the specific structure of the coating unit 2 for implementing step B is provided: The coating unit 2 includes a coating machine body 20, a pressure roller 21, a coating mechanism 22, a protective belt 23, a driving mechanism 24, an adjusting mechanism 25, and an angle adjusting mechanism 26, all of which are disposed on the coating machine body 20. A coating gap 27 for the soft film to pass through and be coated is formed between the pressure roller 21 and the coating mechanism 22. The driving mechanism 24 is used to drive the protective belt 23 to move through the coating gap 27, and the adjusting mechanism 25 is used to drive the coating mechanism 22 to flip;

[0075] The angle adjusting mechanism 26 is used to adjust the angle at which the soft film enters the coating gap 27.

[0076] That is, the present invention controls the angle at which the soft film contacts the protective belt 23 through the angle adjusting mechanism 26, thereby realizing the adjustment of the angle at which the soft film enters the coating gap 27, enabling the present invention to be adaptively adjusted according to the angle requirements of different soft films for entering the coating, thus improving the flexibility of the present invention. During coating, the pressure roller 21 only serves to limit and form the coating gap 27, and it is the protective belt 23 that contacts the soft film. Therefore, the rotation of the pressure roller 21 (with a corresponding driving source) and the cooperation of the driving mechanism 24 can achieve the effect of driving and pulling the protective belt 23 to rotate, realizing the driving and pulling of the soft film.

[0077] Specifically, the angle adjustment mechanism 26 includes an angle adjustment driving member 261 and an angle adjustment roller 262. The angle adjustment roller 262 is located directly above the pressure roller 21, and the angle adjustment driving member 261 is used to drive the angle adjustment roller 262 to move up and down.

[0078] Step B specifically includes:

[0079] B1. According to the characteristics of the soft film, drive the angle adjustment roller 262 to move up and down through the angle adjustment driving member 261;

[0080] B2. The driving mechanism 24 drives the protective belt 23 to contact the pressure roller 21 and enter and pass through the coating gap 27 under the traction of the pressure roller 21;

[0081] B3. After being guided by the angle adjustment roller 262, the soft film moves to contact the protective belt 23 at an angle α and enters the coating gap 27 under the drive of the protective belt 23;

[0082] B4. The coating mechanism 22 performs a coating process on the soft film in the coating gap 27;

[0083] B5. The soft film leaves the coating gap 27.

[0084] That is, the angle at which the soft film enters the coating gap 27 is adjusted by raising and lowering the angle adjustment roller 262, and the height of the angle adjustment roller 262 is determined by the angle required for the soft film; the angle adjustment driving member 261 is preferably a cylinder, and the following functions can also be achieved: when the coating requirement for the soft film changes and the angle at which the soft film enters the coating gap 27 changes, the angle adjustment roller 262 can be directly controlled to rise without stopping the machine, achieving the effect of on-line angle adjustment, thus making the change of the coating rhythm smoother.

[0085] Specifically, the number of the protective belts 23 and the driving mechanisms 24 is two each, and the two driving mechanisms 24 are drivingly connected to the two protective belts 23 one by one; the driving mechanism 24 has a tension floating roller 241, and the tension floating roller 241 contacts the protective belt 23;

[0086] The two protective belts 23 are arranged at intervals, and the two protective belts 23 are respectively used to contact both sides of the same surface of the soft film;

[0087] In step B4, when the coating mechanism 22 performs a coating process on the soft film, the force applied by the coating mechanism 22 to the soft film is released by making way through the holes between the two protective belts 23, so as to prevent the soft film from breaking due to excessive force.

[0088] The provision of the two protective belts 23 allows one end of the middle part of the soft film that does not need to be coated to have a compensating space, which does not come into contact with the pressure roller 21. When the force exerted by the coating mechanism 22 on the soft film is relatively large, it compensates for the deformation of the soft film, thereby preventing the force on the soft film from being too large and all concentrated within the soft film, which could cause the soft film to deform and be unable to recover or even break.

[0089] Specifically, the coating mechanism 22 includes a coating housing 221, a material storage tank 222, a coating translation module 223, and a plurality of coating rollers 224. The material storage tank 222 is used to store the adhesive material. The material storage tank 222 is arranged within the coating housing 221. The material storage tank 222 has a coating arc groove whose shape is adapted to that of the pressure roller 21. The plurality of coating rollers 224 are arranged at intervals along the path of the coating arc groove. The coating rollers 224 are used to pick up the coating material in the material storage tank 222 and apply the coating material to the soft film. The adjustment mechanism 25 is drivingly connected to the coating housing 221. The coating housing 221 is rotatably arranged at the output end of the coating translation module 223. The coating translation module 223 is used to drive the coating housing 221 to translate so that the coating housing 221 approaches or moves away from the pressure roller 21.

[0090] The coating arc groove has a plurality of discharge ports 225. The plurality of discharge ports 225 are all communicated with the material storage tank 222. The plurality of discharge ports 225 are arranged in one-to-one correspondence with the plurality of coating rollers 224.

[0091] During actual use, the material storage tank 222 has a corresponding pump structure to pump the coating material to each discharge port 225. Although Figure 4 there is a certain distance between the discharge port 225 and the coating roller 224, Figure 4 this is only for reference. In fact, part of the coating roller 224 is inserted into the discharge port 225 to play a blocking role.

[0092] The coating operation of the present invention is as follows:

[0093] The coating roller 224 rotates and enters the discharge port 225 to pick up the coating material from the discharge port 225.

[0094] The coating roller 224 leaves the discharge port 225 and then rotates to contact the soft film within the coating gap 27 to apply the coating material to the soft film.

[0095] Since the shape of the coating arc groove is adapted to that of the pressure roller 21, the shape of the soft film after entering the coating gap 27 is also adapted to that of the coating arc groove. By coating the soft film with a plurality of coating rollers 224, there is an interval in the sequence of contact between adjacent coating rollers 224 and the soft film, preventing continuous pressing and coating of the soft film, which could cause the soft film to be unable to recover its deformation. It also ensures that the force on the soft film can be reduced after the coating roller 224 contacts the soft film, reducing the occurrence of soft film deformation.

[0096] In this embodiment, the curing unit includes a first curing mechanism 3 and a second curing mechanism 4, and step C specifically includes:

[0097] C1. Using the first curing mechanism 3 to perform a primary curing treatment on the soft film;

[0098] C2. Obtaining the surface image of the soft film after the primary curing treatment;

[0099] C3. Analyzing the color, texture, and thickness of the soft film surface image to determine the curing state of the soft film;

[0100] C4. Adjusting the second curing mechanism 4 according to the curing state of the soft film;

[0101] C5. Then using the second curing mechanism 4 to perform a secondary curing treatment on the soft film.

[0102] By curing the soft film twice, the requirements for the coating shape / characteristics of the soft film can be met, and the curing degree of the soft film can be controlled, avoiding over-irradiation or under-irradiation, which may affect the quality of the soft film.

[0103] That is, both the first curing mechanism 3 and the second curing mechanism 4 use the method of irradiating with a high-pressure UV lamp 42 to cure the soft film. After the first curing mechanism 3 cures the soft film, due to factors such as the environment and materials, the curing degree of the soft film will be different. Therefore, after the primary curing, it is necessary to obtain the image of the soft film through the camera module 46 (preferably a common camera device such as an industrial camera), and judge the curing degree of the soft film by combining factors such as the coating color, texture, and even thickness on the surface of the soft film. Subsequently, the parameters of the secondary curing can be adjusted according to the curing degree to ensure that the curing effects of the soft film after two cures are basically the same, ensuring the stability of the quality.

[0104] Specifically, the second curing mechanism 4 includes a curing body 41, a UV lamp 42, a power controller 43, and a lifting module 44, all of which are arranged on the curing body 41. The power controller 43 is used to control the output power of the curing body 41, and the lifting module 44 is used to drive the UV lamp 42 to lift;

[0105] Step C4 specifically includes:

[0106] C41. According to the curing state of the soft film, calculating the power W' of the UV lamp 42 required for the secondary curing of the soft film;

[0107] C42. Comparing W' with the working power range W0 of the UV lamp 42, and judging whether W' is within the working power range W0. If so, the output power of the UV lamp 42 is controlled by the power controller 43 to be adjusted to W'; otherwise, step C43 is executed;

[0108] Calculate the power difference ΔW by ΔW = W’ - W0, calculate the compensation distance Δh according to Δh = k * ΔW, and calculate the actual distance h’ according to h’ = h + Δh;

[0109] C44. Then use the lifting module 44 to drive the UV lamp 42 to lift and lower so that the distance between the UV lamp 42 and the soft film is adjusted to h’;

[0110] Where k is a constant greater than 0, and h is the reference distance between the UV lamp 42 and the soft film.

[0111] The factors affecting the curing efficiency are usually the output power (brightness) of the UV lamp 42 and the distance between the UV lamp and the soft film. And the UV lamp 42 usually has a working power range. When the actual power of the UV lamp 42 is lower than this range, the UV lamp 42 cannot work properly, and when it exceeds this range, it is easy to cause the UV lamp to burn out. Therefore, within the working power range, the output power of the UV lamp 42 is adjustable; and when the power required by the soft film is less than this range, only by changing the distance between the UV lamp 42 and the soft film can the power output from the UV lamp 42 to the soft film be indirectly reduced, so that the adjustable output power range of the second curing mechanism 4 of the present invention is larger.

[0112] Specifically, after performing steps C43 - C44, adjust the working power range W0 to W according to h’, and then continuously perform steps C41 - C42. That is, convert according to the difference between h’ and h to obtain the current working power range W0, so that in the subsequent process of adjusting the output power of the UV lamp 42 of the second curing mechanism 4, it is also adjusted within the working power range W0, thereby reducing the lifting frequency of the UV lamp 42.

[0113] Specifically, the number of the UV lamps 42 is two, and the two UV lamps 42 are respectively connected with a power controller 43, and the lifting module 44 is used to drive the two UV lamps 42 to lift and lower simultaneously.

[0114] In actual use, the second curing mechanism 4 further includes a heat dissipation module 45, and the heat dissipation module 45 is used to dissipate heat inside the curing body 41;

[0115] Step C4 further includes:

[0116] Obtain the real-time temperature T inside the curing body 41 and the required temperature range T’ for soft film curing;

[0117] Compare T with T’. If T is within T’, perform steps C41 - C42;

[0118] If T is greater than the maximum value of T’, control the heat dissipation module 45 to work, and adjust the output power of both UV lamps 42 to k’ * W, and use the two UV lamps 42 to irradiate the soft film successively;

[0119] If T is less than the minimum value of T', the heat dissipation module 45 stops working, and the output power of both UV lamps 42 is adjusted to k" * W, and then the two UV lamps 42 are driven to rise by the lifting module 44 according to k" * W;

[0120] Wherein, both k' and k" are constants, and the value range of k' is 0.5 - 0.8, and the value range of k" is 1.1 - 1.3.

[0121] That is, the two UV lamps 42 are lifted and lowered together, and they irradiate and cure the soft film one after another. During this process, the output powers of the two UV lamps 42 can be adjusted differently according to the actual temperature, so as to ensure that the soft film is secondarily cured at a suitable temperature. That is to say, the main function of the second UV lamp 42 is to play a compensating role, which is related to the actual temperature. The above values of k' and k" are measured according to experiments and will vary for different soft films and coatings, which will not be elaborated here.

[0122] Furthermore, the laminating unit includes a film feeding mechanism 5 and a laminating mechanism 6, wherein the film feeding mechanism 5 is used to feed the protective film, and the laminating mechanism 6 is used to laminate the protective film onto the soft film.

[0123] This embodiment provides a film feeding mechanism 5 for performing step E, and the number of the film feeding mechanisms 5 is two; the film feeding mechanism 5 includes a film feeding module 51, a clamping module 52, a film feeding driving member 53, a film feeding tension detector 54, a film feeding member 55 and a film feeding tension roller 56. The film feeding module 51 is used to assemble the material roll of the protective film, the clamping module 52 is used to position the material roll to the film feeding module 51, the film feeding tension detector 54 is used to detect the tension of the protective film of the soft film, one end of the film feeding member 55 is rotatably installed on the film feeding mechanism 5, the film feeding tension roller 56 is installed at the other end of the film feeding member 55, and the film feeding driving member 53 is used to drive the film feeding member 55 to rotate;

[0124] The operation steps of the film feeding mechanism 5 specifically include:

[0125] Y1. Feed the protective film through the film feeding module 51;

[0126] Y2. During the process of feeding the protective film, detect the current tension F of the protective film via the film feeding tension detector 54;

[0127] Y3. Provide a preset tension F0, and calculate the tension difference F' according to F' = F - F0;

[0128] Y4. Take the absolute value of the tension difference F', and judge whether |F'| is within the preset range. If so, execute step Y5, otherwise execute step Y6;

[0129] Y5. Calculate the rotation path length S of the film releasing member 55 according to S = k*F’, and drive the rotation of the film releasing member 55 by the film releasing driving member 53 according to S;

[0130] Y6. The film releasing driving member 53 does not drive the film releasing member 55 to rotate;

[0131] Wherein, when S > 0, the film releasing member 55 rotates counterclockwise; when S < 0, the film releasing member 55 rotates clockwise.

[0132] That is, in the film releasing mechanism 5, the material roll is limited to the film releasing module 51 by the clamping module 52, and the film releasing module 51 drives the material roll to rotate to release the protective film. When releasing the protective film, the protective film will contact the film releasing tension detector 54, and the film releasing tension detector 54 detects the tension of the protective film: when the tension of the protective film exceeds or is lower than the preset range, tension adjustment is required, that is, by controlling the swing of the film releasing tension roller 56, to control the lifting and then lowering of the film releasing tension roller 56, so as to achieve the effect of changing the contact force received by the protective film. By swinging the film releasing tension roller 56, the height change of the film releasing tension roller 56 is made more precise, so that the tension control of the protective film is more accurate.

[0133] In this embodiment, the laminating mechanism 6 is used to execute step E. The laminating mechanism 6 includes a laminating body 61, a laminating guide roller 62, a laminating lifting module 63, a first laminating roller 64, a second laminating roller 65, a laminating flipping member 66, a laminating control block 67, and a laminating translation module 68. The laminating lifting module 63 is used to drive the laminating guide roller 62 to lift and lower. There is a laminating gap between the first laminating roller 64 and the second laminating roller 65 for laminating the protective film and the soft film. The first laminating roller 64 is installed on the laminating flipping member 66. One end of the laminating flipping member 66 is rotatably installed on the laminating body 61, and a contact wheel 661 is provided at the other end of the laminating flipping member 66. A laminating inclined surface 671 is provided at the top of the laminating control block 67, and the contact wheel 661 abuts against the laminating inclined surface 671. The laminating translation module 68 is used to drive the laminating control block 67 to move back and forth in the horizontal direction.

[0134] That is, the present invention laminates the soft film and two protective films passing between the first laminating roller 64 and the second laminating roller 64 by the cooperation of the first laminating roller 64 and the second laminating roller 65. In order to adjust the depth of the laminating gap with high precision, the present invention uses the laminating inclined surface 671 and the contact wheel 661 to realize the height change of the first laminating roller 64 relative to the second laminating roller 65.

[0135] It should be noted that the clamping module 52 of the present invention includes a clamping swing member 5214, a clamping cylinder 522, and a locking block 523. The end of the clamping swing member 521 has a clamping groove 524 for accommodating the material roll. The clamping cylinder 522 is used to control the reciprocating movement of the locking block 523, so as to control the locking block 523 and the clamping groove 524 to cooperate to form an arc structure, so as to achieve the limiting effect on the material roll and provide more space for replacing the material roll when unlocking.

[0136] After the laminating is completed, the soft film is wound by the winding mechanism 7, thus completing the whole operation.

[0137] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention is disclosed above in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical means of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A soft film coating and laminating process, characterized in that: The following steps are involved: A. Unwind the soft film and remove dust from it; B. The dust-free soft film is transferred between the pressure roller and the coating mechanism for coating; during the coating process, a protective tape is used to contact between the soft film and the pressure roller to avoid direct contact between the pressure roller and the soft film; C. Curing the coated soft film; D. Laminating protective film to the cured soft film; E. Roll up the soft film after the protective film is attached.

2. The soft film coating and laminating process according to claim 1, characterized in that: Provide a coating unit for performing step B, the coating unit includes a pressure roller, a coating mechanism, a protective belt, a driving mechanism, an adjusting mechanism and an angle adjusting mechanism, a coating gap for the soft film to be coated is formed between the pressure roller and the coating mechanism, the driving mechanism is used to drive the protective belt to move to pass through the coating gap, and the adjusting mechanism is used to drive the coating mechanism to flip; The angle adjustment mechanism is used to adjust the angle at which the soft film enters the coating gap.

3. The soft film coating and laminating process according to claim 2, characterized in that: The angle adjustment mechanism includes an angle adjustment drive and an angle adjustment roller, wherein the angle adjustment roller is located directly above the pressure roller, and the angle adjustment drive is used to drive the angle adjustment roller to rise and fall; Step B specifically includes: B1. According to the characteristics of the soft film, the angle adjustment roller is driven up and down by the angle adjustment drive; B2. The driving mechanism drives the protective belt to contact the pressure roller and enter and pass through the coating gap with the traction of the pressure roller; B3. After being guided by the angle-adjusting roller, the soft film moves at an angle α until it contacts the protective belt, and enters the coating gap driven by the protective belt; B4. The soft film in the coating gap is coated by the coating mechanism; B5. The soft film leaves the coating gap.

4. The soft film coating and laminating process according to claim 3, characterized in that: The number of the protective belts and the driving mechanism are both two, and the two driving mechanisms are connected to the two protective belts one by one; the driving mechanism has a tension floating roller, and the tension floating roller is in contact with the protective belt; The two protection belts are arranged at intervals, and the two protection belts are respectively used to contact the two sides of the same surface of the soft film; In step B4, the coating mechanism coats the soft film, and the holes between the two protective tapes are used to release the force applied to the soft film by the coating mechanism, so as to prevent the soft film from being broken due to excessive force.

5. The soft film coating and laminating process according to claim 3, characterized in that: The coating mechanism comprises a coating shell, a material storage tank, a coating translation module and a plurality of coating rollers. The material storage tank is used to store rubber material. The material storage tank is arranged in the coating shell. The material storage tank has a coating arc groove whose shape is adapted to the pressure roller. The plurality of coating rollers are arranged at intervals along the path of the coating arc groove. The coating rollers are used to dip the coating in the material storage tank and apply the coating to the soft film. The adjustment mechanism is driven to connect the coating shell. The coating shell is rotatably arranged at the output end of the coating translation module. The coating translation module is used to drive the coating shell to translate so that the coating shell is close to or away from the pressure roller. The coating arc trough has a plurality of discharge ports, all of which are connected to the material storage trough, and the plurality of discharge ports are arranged in one-to-one correspondence with the coating rollers.

6. The soft film coating and laminating process according to claim 1, characterized in that: Step C specifically includes: C1. Performing a curing treatment on the soft film using a first curing mechanism; C2. Acquire the surface image of the soft film after the primary curing treatment; C3. Analyze the color, texture and thickness of the soft film surface image to determine the curing state of the soft film; C4. Adjust the second curing mechanism according to the curing state of the soft film; C5. Then, the soft film is subjected to secondary curing treatment by using a second curing mechanism.

7. The soft film coating and laminating process according to claim 6, characterized in that: The second curing mechanism includes a curing body, UV lamps, a power controller, and a lifting module, all of which are arranged on the curing body. The power controller is used to control the output power of the curing body, and the lifting module is used to drive the UV lamps to move up and down; Step C4 specifically includes: C41. Calculate the required UV lamp power W’ for the secondary curing of the soft film based on the curing state of the soft film; C42. Compare W’ with the working power range W0 of the UV lamp, and determine whether W’ is within the working power range W0. If so, control the output power of the UV lamp to be adjusted to W’ through the power controller; otherwise, execute step C43; C43. Calculate the power difference △W through △W = W’ - W0, calculate the compensation distance △h according to △h = k * △W, and calculate the actual distance h’ according to h’ = h + △h; C44. Then use the lifting module to drive the UV lamp to move up and down so that the distance between the UV lamp and the soft film is adjusted to h’; Where k is a constant greater than 0, and h is the reference distance between the UV lamp and the soft film.

8. The soft film coating and laminating process according to claim 7, characterized in that: After executing steps C43 - C44, adjust the working power range W0 to W according to h’, and then continuously execute steps C41 - C42; The number of the UV lamps is two, and the two UV lamps are respectively connected with a power controller. The lifting module is used to drive the two UV lamps to move up and down simultaneously.

9. The soft film coating and laminating process according to claim 8, characterized in that: The second curing mechanism further includes a heat dissipation module, and the heat dissipation module is used to dissipate heat inside the curing body; Step C4 further includes: Obtain the real-time temperature T inside the curing body and the required temperature range T’ for the soft film curing; Compare T with T’. If T is within T’, execute steps C41 - C42; If T is greater than the maximum value of T’, control the heat dissipation module to work, and adjust the output power of the two UV lamps to k’ * W, and irradiate the soft film with the two UV lamps successively; If T is less than the minimum value of T’, the heat dissipation module stops working, and adjust the output power of the two UV lamps to k” * W, and then drive the two UV lamps to rise according to k” * W by using the lifting module; Where k’ and k” are both constants, and the value range of k’ is 0.5 - 0.8, and the value range of k” is 1.1 - 1.

3.

10. The soft film coating and laminating process according to claim 1, characterized in that: Provide a film releasing mechanism for executing step E, and the number of the film releasing mechanisms is two; the film releasing mechanism includes a film releasing module, a clamping module, a film releasing driving part, a film releasing tension detector, a film releasing part, and a film releasing tension roller. The film releasing module is used to assemble the material roll of the protective film, the clamping module is used to position the material roll to the film releasing module, the film releasing tension detector is used to detect the tension of the protective film of the base film, one end of the film releasing part is rotatably installed on the film releasing mechanism, the film releasing tension roller is installed at the other end of the film releasing part, and the film releasing driving part is used to drive the film releasing part to rotate; The action steps of the film releasing mechanism specifically include: Y1. Release the protective film through the film releasing module; Y2. During the process of releasing the protective film, detect the current tension F of the protective film through the film releasing tension detector; Y3. Provide a preset tension F0, and calculate the tension difference F’ according to F’ = F - F0; Y4. Take the absolute value of the tension difference F’, and determine whether |F’| is within the preset range. If so, execute step Y5, otherwise execute step Y6; Y5. Calculate the rotation path length S of the film release member according to S = k * F', and drive the film release member to rotate according to S; Y6. The film placing drive does not drive the film placing part to rotate; Among them, when S>0, the film-releasing part rotates counterclockwise; when S<0, the film-releasing part rotates smoothly.

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