Pre-coating film production and processing equipment

Abstract

The invention relates to the technical field of pre-coating film production, and discloses pre-coating film production and processing equipment which comprises a dust removal bin, a pressing assembly is arranged on one side of the dust removal bin, the dust removal bin and the pressing assembly are connected through a gluing assembly, an electrostatic dust removal device is arranged in the dust removal bin, and a base material and a release film penetrate through the dust removal bin and are connected through a gluing assembly. The electrostatic dust collection device adsorbs impurities on the attached face of a base material and a release film through static electricity, the base material subjected to dust collection and the release film subjected to dust collection enter the pressing assembly together to be pressed and formed after an adhesive is sprayed to the base material through the gluing device, and a recycling mechanism is arranged in the electrostatic dust collection device. The recycling mechanism is used for cleaning an adsorption part of the electrostatic dust collection device, and an adhesive recycling assembly is arranged below the gluing device. The dust removal belt is automatically cleaned and recycled through electrostatic adsorption of impurities on the surfaces of the base material and the release film and combination of the cleaning tank, the drainage plate and hot air drying, and continuous and efficient dust removal is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pre-coating film production, in particular to a pre-coating film production and processing equipment. Background Art

[0002] As an important intermediate product in the field of composite material processing, pre-coated film is widely used in electronic packaging, optical film, food packaging and other fields. In its production process, the interface bonding quality between the substrate (such as PET, BOPP film) and the release film directly affects the anti-peel strength, light transmittance and weather resistance of the terminal product, and its production quality directly affects the subsequent application performance.

[0003] Substrates and release films are easily contaminated with dust, particles and other impurities during storage or transportation, resulting in defects after lamination. In traditional production processes, mechanical brushing or air blowing is often used to remove dust from the surfaces of substrates and release films. This has many blind spots for dust removal and a low removal rate for micron-level impurities, resulting in a high rate of interface bubble defects after lamination. The waste of raw materials caused by excessive spraying of adhesives during the gluing process is widespread, and the loss rate of conventional scraper recovery systems is still over 8%. In addition, existing electrostatic dust removal devices mostly use a fixed electrode plate structure. After long-term use, the accumulation of impurities on the electrode surface will cause electric field distortion, requiring shutdown for cleaning, which seriously affects continuous production efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pre-coating film production and processing equipment, which solves the problems of the electrostatic dust removal device needing to be shut down for cleaning, low heat energy recycling rate, and waste of adhesive.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pre-coated film production and processing equipment, including a dust removal cabin, a pressing component is arranged on one side of the dust removal cabin, the dust removal cabin and the pressing component are connected by a glue coating component, an electrostatic dust removal device is arranged in the dust removal cabin, a substrate and a release film pass through the dust removal cabin, the electrostatic dust removal device absorbs impurities on the contact surface between the substrate and the release film by electrostatic adsorption, the substrate after dust removal is sprayed with adhesive by the glue coating device, and then enters the pressing component together with the release film after dust removal for pressing and forming, a recycling mechanism is arranged in the electrostatic dust removal device, the recycling mechanism is used to clean the adsorption component of the electrostatic dust removal device and reuse it, an adhesive recovery component is arranged below the glue coating device, which is used to recover excess adhesive, a gas flow channel is arranged in the middle of the pressing component, and a negative pressure device is arranged at the exhaust end of the gas flow channel, so that the substrate and the release film are in a negative pressure state, when the negative pressure device is started, the gas between the substrate and the release film is extracted by the negative pressure device and blown to the adsorption component of the electrostatic dust removal device for drying.

[0006] Preferably, a release film input port and a substrate input port are respectively opened on one side of the dust removal chamber from top to bottom, and a release film output port and a substrate output port are respectively opened on the other side from top to bottom. A guide mechanism one and a guide mechanism two are respectively arranged in the dust removal chamber from top to bottom. The release film enters the dust removal chamber from the release film input port and is output from the release film output port along the guide mechanism one. The substrate enters the dust removal chamber from the substrate input port and is output from the substrate output port to the glue coating assembly along the guide mechanism two.

[0007] Preferably, the electrostatic dust removal device includes an electrostatic dust removal belt and an electrostatic generator. The electrostatic dust removal belt is connected end to end to form a closed ring structure, and is fitted with a multi-stage conveying device to form a conveyor belt structure. The electrostatic dust removal belt located above is inserted between the release film and the substrate and is close to each other. An electrostatic generator is provided at the input of the electrostatic dust removal belt located above, and static electricity is attached to the upper and lower surfaces of the electrostatic dust removal belt through the electrostatic generator.

[0008] Preferably, the recycling mechanism includes a cleaning tank and a water filter plate. The cleaning tank is arranged at the bottom of the dust removal chamber, and a cleaning brush is arranged at the bottom of the cleaning tank. Cleaning liquid is arranged in the cleaning tank, and the water filter plate is arranged above the cleaning tank. The electrostatic dust removal belt located below passes through the cleaning liquid, the cleaning brush and the water filter plate in sequence.

[0009] Preferably, the gluing device includes a gluing cabin, an outer wall on one side of the gluing cabin is fixedly connected to the outer wall of the dust removal cabin, and a semi-finished product output port is opened on the other side. The interior of the gluing cabin is connected to the substrate output port. A gluing channel is arranged on the upper part of the gluing cabin, and a gluing device is arranged above the gluing channel. The substrate moves in a V shape along the gluing channel and is output at the semi-finished product output port.

[0010] Preferably, the adhesive recovery component includes a storage cavity and a scraper, the storage cavity is opened at the bottom of the glue coating cabin, the scraper is located in the glue coating cabin and is arranged above the semi-finished product output port, a gap is left between the bottom edge of the scraper and the upper surface of the substrate, the gap size is equal to the preset adhesive thickness on the upper surface of the substrate, and excess adhesive on the upper surface of the substrate is intercepted by the scraper and falls into the storage cavity.

[0011] Preferably, the pressing assembly includes a pressing cabin, an outer wall on one side of the pressing cabin is fixedly connected to the outer wall of the gluing cabin, and a semi-finished product input port is opened on this side wall, and a finished product output port is opened on the other side, a winder is arranged outside the finished product output port, the interior of the pressing cabin is communicated with the semi-finished product output port, the pressing cabin is provided with an upper guide plate and a lower guide plate from top to bottom, a gas flow channel is arranged between the upper guide plate and the lower guide plate, the inner diameter of the gas flow channel gradually increases from the air inlet end to the exhaust end, the air inlet end of the gas flow channel points to and is close to the pressing device, the substrate and the release film are adhered to each other after being pressed by the pressing device, and are wound up by the winder.

[0012] Preferably, a heater is provided inside the pressing device, and heat dissipation fins are provided on the outer wall. The heater heats the plate body of the pressing device, and part of the heat is dissipated by the heat dissipation fins.

[0013] The present invention provides a pre-coating film production and processing equipment. It has the following beneficial effects: The present invention realizes automatic cleaning and recycling of the dust removal belt by electrostatically adsorbing impurities on the surface of the substrate and the release film, and combines a cleaning tank, a water filter plate and hot air flow drying, thereby ensuring continuous and efficient dust removal. The V-shaped design of the glue coating channel cooperates with the scraper gap control to achieve uniform coating of the adhesive, and the excess glue is recovered through the storage cavity, reducing waste and avoiding environmental pollution. The gas flow channel cooperates with the negative pressure device to extract the gas in the pressing area, greatly reducing the probability of bubble generation. At the same time, the heat of the pressing assembly is taken away by the negative pressure airflow, forming a hot air cycle for drying the electrostatic dust removal belt, realizing the secondary utilization of thermal energy and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a front cross-sectional schematic diagram of the dust removal cabin in the present invention; Figure 4 It is a side cross-sectional schematic diagram of the dust removal cabin in the present invention; Figure 5 It is a structural schematic diagram of the glue coating device in the present invention; Figure 6 It is a schematic diagram of the structure of the pressing assembly in the present invention.

[0015] Among them, 1. dust removal cabin; 101. release film input port; 102. substrate input port; 103. release film output port; 104. substrate output port; 105. guide mechanism one; 106. guide mechanism two; 2. electrostatic dust removal belt; 3. electrostatic generator; 4. multi-stage conveying device; 5. cleaning tank; 6. water filter plate; 7. cleaning brush; 8. glue cabin; 801. semi-finished product output port; 9. glue channel; 10. glue equipment; 11. storage chamber; 12. scraper; 13. pressing cabin; 1301. semi-finished product input port; 1302. finished product output port; 14. winder; 15. upper guide plate; 16. lower guide plate; 17. pressing device; 18. heat dissipation fins; 19. negative pressure device. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides a pre-coated film production and processing equipment, including a dust removal cabin 1, a pressing component is arranged on one side of the dust removal cabin 1, the dust removal cabin 1 and the pressing component are connected by a glue coating component, an electrostatic dust removal device is arranged in the dust removal cabin 1, a substrate and a release film pass through the dust removal cabin 1, the electrostatic dust removal device absorbs impurities on the contact surface between the substrate and the release film by electrostatic adsorption, the substrate after dust removal is sprayed with adhesive by the glue coating device, and then enters the pressing component together with the release film after dust removal for pressing and forming, a recycling mechanism is arranged in the electrostatic dust removal device, the recycling mechanism is used to clean the adsorption component of the electrostatic dust removal device and reuse it, an adhesive recovery component is arranged below the glue coating device, and is used to recover excess adhesive, a gas flow channel is arranged in the middle of the pressing component, and a negative pressure device 19 is arranged at the exhaust end of the gas flow channel, so that the substrate and the release film are in a negative pressure state, when the negative pressure device 19 is started, the gas between the substrate and the release film is extracted by the negative pressure device 19, and blown to the adsorption component of the electrostatic dust removal device for drying.

[0018] The negative pressure device 19 can be a combination of a high-power vacuum pump and a pipeline. The vacuum pump suction end is connected to the gas flow channel through a pipeline, and the vacuum pump exhaust end is connected to the space where the adsorption components in the electrostatic dust removal device are superimposed through another pipeline. The vacuum pump draws the gas in the gas flow channel into the electrostatic dust removal device. Since the gas flow channel is located between the substrate and the release film, and the only air intake port is the opening through which the substrate and the release film pass, the air intake volume is less than the air outlet volume, so that after the gas between the substrate and the release film is extracted, a negative pressure state is formed, which promotes the mutual adhesion between the substrate and the release film and greatly reduces the probability of bubble generation. At the same time, in order to further improve the lamination effect, the lamination component has a heating function, and the heating temperature needs to be controlled below a certain temperature range. If the temperature is too high, it will cause irreversible damage to the pre-coated film. Therefore, during the vacuum pump exhaust process, the airflow passes through the lamination component and takes away part of its excess heat, thereby reducing the risk of excessive temperature. At the same time, the airflow absorbs the heat of the lamination component to form a hot airflow, and then uses the hot airflow to blow the adsorption components of the electrostatic precipitator, thereby achieving a drying effect. Of course, in order to avoid the presence of residual dust, the airflow can be further removed through the filter before entering the electrostatic precipitator. Just pay attention to adjusting the filter airflow loss.

[0019] A release film input port 101 and a substrate input port 102 are respectively provided on one side of the dust removal chamber 1 from top to bottom, and a release film output port 103 and a substrate output port 104 are respectively provided on the other side from top to bottom. A guide mechanism 1 105 and a guide mechanism 2 106 are respectively provided in the dust removal chamber 1 from top to bottom. The release film enters the dust removal chamber 1 from the release film input port 101 and is output from the release film output port 103 along the guide mechanism 1 105. The substrate enters the dust removal chamber 1 from the substrate input port 102 and is output from the substrate output port 104 to the glue coating component along the guide mechanism 2 106.

[0020] Both the guide mechanism 1 105 and the guide mechanism 2 106 are composed of a plurality of steering rollers, which are symmetrically arranged, and the release film and the substrate respectively bypass the corresponding steering rollers to realize the change of the moving path, entering the dust removal chamber 1 from the release film input port 101, and presenting a path with high ends and low middle under the limitation of the guide mechanism 1 105, while the substrate enters the dust removal chamber 1 from the substrate input port 102, and presents a path with low ends and high middle under the limitation of the guide mechanism 2 106, thereby making the substrate in the middle section close to the release film for subsequent electrostatic dust removal operations.

[0021] The electrostatic dust removal device includes an electrostatic dust removal belt 2 and an electrostatic generator 3. The electrostatic dust removal belt 2 is connected end to end to form a closed ring structure, and is fitted with a multi-stage conveying device 4 to form a conveyor belt structure. The electrostatic dust removal belt 2 located at the top is inserted between the release film and the substrate and is close to each other. The electrostatic generator 3 is provided at the input of the electrostatic dust removal belt 2 located at the top, and static electricity is attached to the upper and lower surfaces of the electrostatic dust removal belt 2 through the electrostatic generator 3. The recycling mechanism includes a cleaning tank 5 and a water filter plate 6. The cleaning tank 5 is arranged at the bottom of the dust removal cabin 1, and a cleaning brush 7 is arranged at the bottom of the cleaning tank 5. Cleaning liquid is arranged in the cleaning tank 5, and the water filter plate 6 is arranged above the cleaning tank 5. The electrostatic dust removal belt 2 located at the bottom passes through the cleaning liquid, the cleaning brush 7 and the water filter plate 6 in sequence.

[0022] The multi-stage conveying device 4 is composed of a plurality of conveying rollers. By arranging the plurality of conveying rollers, the electrostatic dust removal belt 2 is fitted and tightened therewith to form a structure similar to a conveyor belt. One of the conveying rollers rotates under the drive of the driving device, so that the electrostatic dust removal belt 2 moves cyclically along a preset path under the limit of the conveying roller, so that the electrostatic dust removal belt 2 passes through the dust removal chamber 1 from the side in a double layer back and forth and moves cyclically. It should be noted that a part of the conveying rollers in the multi-stage conveying device 4 are arranged in an oblique angle symmetrical short spacing, so that the electrostatic dust removal belt 2 passing through this part forms a multi-layer serpentine structure, which is similar to the arrangement of serpentine heat pipes. This part is the interval where hot air passes. Through this structure, the length of the electrostatic dust removal belt 2 to be dried is increased in a limited space, thereby improving the drying effect. When the electrostatic dust removal belt 2 after cleaning and drying passes through the electrostatic generator 3, an electrostatic layer is attached to the surface of the electrostatic dust removal belt 2, and then passes between the release film and the substrate, and electrostatically adsorbs impurities such as dust on the lower surface of the release film and the upper surface of the substrate, thereby achieving a dust removal effect. After absorbing dust, the electrostatic dust removal belt 2 enters the cleaning tank 5, and with the help of the cleaning brush 7, the dust on its two surfaces is removed, and then the water filter plate 6 preliminarily removes the residual cleaning liquid on the surface, and then enters the drying area for drying. This cycle is repeated to achieve the reuse of the electrostatic dust removal belt 2 on the basis of electrostatic dust removal.

[0023] The gluing device includes a gluing cabin 8, the outer wall of one side of the gluing cabin 8 is fixedly connected to the outer wall of the dust removal cabin 1, and a semi-finished product output port 801 is provided on the other side. The interior of the gluing cabin 8 is connected to the substrate output port 104. A gluing channel 9 is provided in the upper part of the gluing cabin 8, and a gluing device 10 is provided above the gluing channel 9. The substrate moves in a V shape along the gluing channel 9 and is output at the semi-finished product output port 801. The adhesive recovery component includes a storage chamber 11 and a scraper 12. The storage chamber 11 is provided at the bottom of the gluing cabin 8. The scraper 12 is located in the gluing cabin 8 and is provided above the semi-finished product output port 801. A gap is left between the bottom edge of the scraper 12 and the upper surface of the substrate. The gap size is equal to the preset adhesive thickness on the upper surface of the substrate. Excess adhesive on the upper surface of the substrate is intercepted by the scraper 12 and falls into the storage chamber 11.

[0024] After electrostatic dust removal, the substrate is pulled into the glue coating chamber 8. When passing through the glue coating channel 9, the glue coating device 10 sprays the adhesive on the upper surface of the substrate, and then scrapes off the excess adhesive through the scraper 12, completing the glue coating operation. In order to prevent the adhesive from flowing back into the dust removal chamber 1, the glue coating channel 9 is set to a V-shaped structure. The excess adhesive is intercepted by the scraper 12 and falls into the storage chamber 11 under the action of gravity, realizing the recovery of the adhesive.

[0025] The pressing assembly includes a pressing chamber 13, the outer wall of one side of the pressing chamber 13 is fixedly connected to the outer wall of the glue coating chamber 8, and a semi-finished product input port 1301 is opened on the side wall, and a finished product output port 1302 is opened on the other side. A winder 14 is arranged outside the finished product output port 1302, and the interior of the pressing chamber 13 is connected to the semi-finished product output port 801. The pressing chamber 13 is provided with an upper guide plate 15 and a lower guide plate 16 from top to bottom, and a gas flow channel is provided between the upper guide plate 15 and the lower guide plate 16. The inner diameter of the gas flow channel gradually increases from the air inlet end to the exhaust end. The air inlet end of the gas flow channel points to and is close to the pressing device 17. The substrate and the release film are attached to each other after the pressing action of the pressing device 17, and are wound by the winder 14. A heater is arranged inside the pressing device 17, and a heat dissipation fin 18 is arranged on the outer wall. The heater heats the plate body of the pressing device 17, and part of the heat is dissipated by the heat dissipation fin 18.

[0026] The substrate after the gluing operation and the release film after the electrostatic dust removal enter the pressing chamber 13 together, and move along the upper guide plate 15 and the lower guide plate 16 respectively and gradually approach each other until they reach the pressing device 17 for pressing operation to form a pre-coated film. The pressing device 17 can be two pressing plates arranged correspondingly up and down, with a gap between the two to allow the pressed pre-coated film to pass through, and at the same time, there is a force between the two pressing plates to move closer to each other, and the distance can be increased by a certain amount under the action of elastic force, so that the pressing defects caused by too large or too small gap can be avoided. This effect can be achieved by adding elastic components, such as springs.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-coating film production and processing equipment, comprising a dust removal cabin (1), characterized in that: A pressing assembly is provided on one side of the dust removal chamber (1), and the dust removal chamber (1) and the pressing assembly are connected via a glue coating assembly. An electrostatic dust removal device is provided in the dust removal chamber (1), and the substrate and the release film pass through the dust removal chamber (1). The electrostatic dust removal device absorbs impurities on the contact surface between the substrate and the release film by electrostatic adsorption. After the dust is removed, the substrate is sprayed with adhesive by the glue coating device and then enters the pressing assembly together with the dust-removed release film for pressing and forming. A recycling mechanism is provided in the electrostatic dust removal device, and the recycling mechanism is used to clean the adsorption component of the electrostatic dust removal device and reuse it. An adhesive recovery assembly is provided below the glue coating device for recovering excess adhesive. A gas flow channel is provided in the middle of the pressing assembly, and a negative pressure device (19) is provided at the exhaust end of the gas flow channel, so that the substrate and the release film are in a negative pressure state. When the negative pressure device (19) is started, the gas between the substrate and the release film is extracted by the negative pressure device (19) and blown to the adsorption component of the electrostatic dust removal device for drying.

2. A pre-coating film production and processing equipment according to claim 1, characterized in that: A release film input port (101) and a substrate input port (102) are respectively provided on one side of the dust removal chamber (1) from top to bottom, and a release film output port (103) and a substrate output port (104) are respectively provided on the other side of the dust removal chamber (1) from top to bottom. A guide mechanism 1 (105) and a guide mechanism 2 (106) are respectively provided in the dust removal chamber (1) from top to bottom. The release film enters the dust removal chamber (1) from the release film input port (101) and is output from the release film output port (103) along the guide mechanism 1 (105). The substrate enters the dust removal chamber (1) from the substrate input port (102) and is output from the substrate output port (104) to the glue coating component along the guide mechanism 2 (106).

3. The pre-coating film production and processing equipment according to claim 1, characterized in that: The electrostatic dust removal device comprises an electrostatic dust removal belt (2) and an electrostatic generator (3); the electrostatic dust removal belt (2) is connected end to end to form a closed ring structure, and is fitted with a multi-stage conveying device (4) to form a conveyor belt structure; the electrostatic dust removal belt (2) located at the top is inserted between the release film and the substrate, and are close to each other; and an electrostatic generator (3) is provided at the input of the electrostatic dust removal belt (2) located at the top, and static electricity is attached to the upper and lower surfaces of the electrostatic dust removal belt (2) through the electrostatic generator (3).

4. A pre-coating film production and processing equipment according to claim 3, characterized in that: The recycling mechanism comprises a cleaning tank (5) and a water filter plate (6); the cleaning tank (5) is arranged at the bottom of the dust removal chamber (1); a cleaning brush (7) is arranged at the bottom of the cleaning tank (5); cleaning liquid is arranged in the cleaning tank (5); the water filter plate (6) is arranged above the cleaning tank (5); and the electrostatic dust removal belt (2) located below passes through the cleaning liquid, the cleaning brush (7) and the water filter plate (6) in sequence.

5. The pre-coating film production and processing equipment according to claim 2, characterized in that: The gluing device comprises a gluing cabin (8), an outer wall of one side of the gluing cabin (8) being fixedly connected to the outer wall of the dust removal cabin (1), and a semi-finished product output port (801) being provided on the other side, the interior of the gluing cabin (8) being connected to the substrate output port (104), a gluing channel (9) being provided at the upper part of the gluing cabin (8), a gluing device (10) being provided above the gluing channel (9), and the substrate moving in a V-shape along the gluing channel (9) and being output at the semi-finished product output port (801).

6. The pre-coating film production and processing equipment according to claim 5, characterized in that: The adhesive recovery component comprises a storage cavity (11) and a scraper (12), wherein the storage cavity (11) is opened at the bottom of the glue coating chamber (8), and the scraper (12) is located in the glue coating chamber (8) and is arranged above the semi-finished product output port (801), and a gap is left between the bottom edge of the scraper (12) and the upper surface of the substrate, and the size of the gap is equal to the preset adhesive thickness on the upper surface of the substrate, and excess adhesive on the upper surface of the substrate is intercepted by the scraper (12) and falls into the storage cavity (11).

7. The pre-coating film production and processing equipment according to claim 5, characterized in that: The pressing assembly comprises a pressing chamber (13), one side outer wall of the pressing chamber (13) is fixedly connected to the outer wall of the gluing chamber (8), and a semi-finished product input port (1301) is provided on the side wall, and a finished product output port (1302) is provided on the other side. A winding machine (14) is arranged outside the finished product output port (1302), and the interior of the pressing chamber (13) is connected to the semi-finished product output port (801). The pressing chamber (13) is provided with an upper guide plate (15) and a lower guide plate (16) from top to bottom, and a gas flow channel is provided between the upper guide plate (15) and the lower guide plate (16). The inner diameter of the gas flow channel gradually increases from the air inlet end to the air outlet end, and the air inlet end of the gas flow channel points to and is close to the pressing device (17). The substrate and the release film are bonded to each other after being pressed by the pressing device (17) and are wound by the winding machine (14).

8. The pre-coating film production and processing equipment according to claim 7, characterized in that: A heater is provided inside the pressing device (17), and heat dissipation fins (18) are provided on the outer wall. The heater heats the plate body of the pressing device (17), and part of the heat is dissipated by the heat dissipation fins (18).

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