CN110681526B

CN110681526B - Release film coating device

Info

Publication number: CN110681526B
Application number: CN201910967049.7A
Authority: CN
Inventors: 孙刚
Original assignee: Huizhou Norman Packaging Materials Co ltd
Current assignee: Huizhou Norman New Material Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2021-10-01
Anticipated expiration: 2039-10-12
Also published as: CN110681526A

Abstract

The invention discloses a release film coating device which comprises a base, an unreeling component, a coating component, a drying box and a reeling component, wherein the unreeling component, the coating component, the drying box and the reeling component are sequentially arranged on the base, the unreeling component supplies materials to the coating component, the coating component is used for coating glue solution on the surface of a film and separating glue solution molecules from the environment, the drying box is used for drying a coated release film, and the reeling component is used for reeling the dried release film. According to the release film coating device, the coating operation of the film is limited in the coating box to prevent glue solution from escaping into the air, and the plasma generator is arranged to promote glue solution molecules to be decomposed into non-toxic micromolecules through the plasma excited by the plasma generator so as to reduce the damage of the glue solution to the health of operators; in addition, provide invariable tangential pulling force for rolling up the membrane pole through drawing the piece for the film is in the tensioning state all the time, and the film is difficult for attaching on the glue spreader, is favorable to controlling the thickness of glue film on the film and from the type membrane quality.

Description

Release film coating device

Technical Field

The invention relates to the technical field of release film processing equipment, in particular to a release film coating device.

Background

The release film is a film product with the surface having release force to organic pressure-sensitive adhesive, which is prepared by coating a plastic film and covering a polymer layer on the surface of the plastic film. The release film has the characteristics of light weight, wear resistance and the like of a common film product, can be used for isolating and protecting the surface of a product, and is easy to peel from the surface of the product based on the release force of the release film to organic pressure-sensitive adhesive after the release film is used up, so that the film tearing difficulty of the film covering on the surface of the product is reduced, and the production efficiency of the product is improved. The coating operation is to coat the coating liquid on the surface of the thin film product to be processed through the coating machine so as to improve the operation of the surface viscosity of the thin film product, in the production process of the release film, the processing production of the release film of different types can be realized only by replacing the type of the coating liquid in the coating machine, the reduction of the production cost of the release film is facilitated, and the market competitiveness of the product is improved.

However, the coating liquid adopted in the coating operation of the release film is often a slightly toxic polymer with irritation, and in the coating operation process of the traditional release film, the coating liquid is easy to volatilize in the air, and operators can contact with the coating liquid molecules in the air for a long time to generate strong irritation to eyes of the operators, even threaten the health of the operators, and are not beneficial to the safe operation of the coating operation; in traditional coating machine working process, the difficult regulation of film rate of tension, along with the film unreels going on of operation, the film rate of tension between two rollers of coating machine reduces, and the film is easily attached on the commentaries on classics roller of coating machine, and the glue film thickness on film surface is difficult to control, is unfavorable for improving the quality from type membrane product.

Disclosure of Invention

Therefore, it is necessary to provide a release film coating apparatus for solving the technical problems of low operation safety and difficulty in adjusting the tension of the film.

The utility model provides a from type membrane coating unit, should include the base from type membrane coating unit and unreel subassembly, rubber coating subassembly, drying cabinet and rolling subassembly, unreel the subassembly the rubber coating subassembly the drying cabinet reaches the rolling subassembly set gradually in the base. The unwinding assembly comprises an unwinding frame, a film winding rod, a traction piece and a film pressing piece, the unwinding frame is arranged on the base and is provided with an installation space, the film winding rod is located in the installation space and is in rotary connection with the unwinding frame, and the film winding rod is used for winding a film roll to be coated; the traction piece is arranged on the base, the output end of the traction piece is connected with one end of the film winding rod, and the traction piece is used for providing constant tangential tension for the film winding rod; the film pressing piece is connected with the unwinding frame in a sliding mode in the vertical direction and is abutted to the outer surface of the film roll to be coated. The glue spreading assembly comprises a glue spreading box, a glue solution barrel, a glue spreading roller, a driving piece, a guide roller and a plasma generator, the glue spreading box is provided with an accommodating space, one side of the glue spreading box is provided with a feed inlet, the glue spreading box is provided with a discharge outlet on the corresponding side of the feed inlet, the feed inlet and the discharge outlet are respectively communicated with the accommodating space, the glue solution barrel is positioned in the accommodating space and connected with the bottom of the glue spreading box, the glue solution barrel is used for being communicated with an external glue solution storage barrel, the glue spreading roller is rotationally connected with the glue spreading box, the glue spreading roller is immersed in the glue solution barrel, the driving piece is installed on the inner surface of the glue spreading box, the output end of the driving piece is in driving connection with the glue spreading roller, the guide roller is connected with the inner surface of the glue spreading box, and a glue spreading channel is arranged between the guide roller and the glue spreading roller, the rubber coating passageway is used for wearing to establish the film book of treating the coating, plasma generator dorsad the glue spreader and with the deflector roll is connected, plasma generator is used for arousing plasma and degradation the glue solution molecule of loss in the accommodation space. The drying cabinet has the drying space, the input in drying space with the discharge gate intercommunication, the output in drying space corresponds the rolling subassembly, be provided with the heater in the drying space, the heater is used for drying after the coating from the type membrane. The winding assembly comprises a winding frame, a winding motor and a winding roller, the winding frame is arranged on the base, the winding motor is installed on the winding frame, the output end of the winding motor is connected with the winding roller in a driving mode, the winding roller is connected with the winding frame in a rotating mode, and the winding roller is used for winding the release film after drying under the driving of the winding motor.

In one embodiment, a side face, adjacent to the traction member, of the unwinding frame is provided with a pre-tightening member, the unwinding assembly further comprises a traction rope, the pre-tightening member is wound on the traction rope, one end of the traction rope is connected with the output end of the traction member, and the other end of the traction rope is connected with the side face of the ring of the film winding rod.

In one embodiment, the unwinding assembly further includes a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are respectively accommodated in the installation space and respectively penetrate through the film winding rod, and the first limiting ring and the second limiting ring are jointly used for limiting the width of the film roll to be coated.

In one embodiment, the first and second position-limiting rings are respectively provided with a vent hole.

In one embodiment, the outer surface of the film winding rod is provided with a plurality of salient points, and the salient points are used for abutting against the inner surface of the film roll to be coated.

In one embodiment, the release film coating device further comprises a tensioning assembly, the tensioning assembly comprises a first tensioning rod and a second tensioning rod, one end of the first tensioning rod is connected with one side surface of the unreeling frame, the other end of the first tensioning rod is connected with the other side surface of the unreeling frame, the distance between the second tensioning rod and the bottom surface of the unreeling frame is smaller than the distance between the first tensioning rod and the bottom surface of the unreeling frame and the distance between the film rolling rod and the bottom surface of the unreeling frame, the first tensioning rod and the second tensioning rod are respectively used for winding a film to be coated, and the winding direction of the film to be coated on the first tensioning rod is opposite to the winding direction of the film to be coated on the film rolling rod and the second tensioning rod.

In one embodiment, the gluing assembly further comprises a scraper, the scraper is connected with the inner surface of the gluing box, the tail end of the scraper is located between the gluing roller and the discharge hole, and the scraper is used for adjusting the thickness of the glue layer on the coated release film.

In one embodiment, the glue box is made of plexiglass.

In one of the embodiments, the glue box is provided with an access door.

In one embodiment, the top of the drying box is provided with a plurality of air holes, and the air holes are used for being communicated with an external air draft device.

According to the release film coating device, the glue coating box is arranged, so that the glue coating operation of the film is limited in the glue coating box to prevent glue from escaping into the air, and the plasma generator is arranged to promote glue molecules to be decomposed into non-toxic micromolecules through the plasma excited by the plasma generator so as to reduce the damage of the glue to the health of operators; in addition, provide invariable tangential pulling force for rolling up the membrane pole through drawing the piece, in the coating operation, the pulling force that the film received draws the piece is balanced with the effort of rolling up the subassembly, and is the same, and the inside tension of film keeps balanced with the pulling force that draws the piece and the effort of rolling up the subassembly respectively, and the film is in the tensioning state all the time, and the film is difficult for attaching on the glue spreader to the glue film thickness on the film has been guaranteed, and then promoted the quality from the type membrane.

Drawings

FIG. 1 is a schematic view of a release film coating apparatus according to an embodiment;

fig. 2 is a schematic structural diagram of an unwinding assembly in one embodiment;

FIG. 3 is a schematic diagram of the position relationship between the film winding rod and the first and second tension rods according to one embodiment;

FIG. 4 is a schematic diagram of the construction of the glue assembly in one embodiment;

FIG. 5 is an enlarged partial view of the portion A in the embodiment shown in FIG. 4;

FIG. 6 is a schematic diagram of the structure of a drying box in one embodiment;

fig. 7 is a schematic structural view of the take-up assembly in one embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 7, the present invention provides a release film coating apparatus 10, wherein the release film coating apparatus 10 includes a base 100, an unwinding assembly 200, a coating assembly 300, a drying box 400 and a winding assembly 500, and the unwinding assembly 200, the coating assembly 300, the drying box 400 and the winding assembly 500 are sequentially disposed on the base 100. The unwinding assembly 200 comprises an unwinding frame 210, a film winding rod 220, a traction member 230 and a film pressing member 240, wherein the unwinding frame 210 is mounted on the base 100, the unwinding frame 210 is provided with a mounting space 211, the film winding rod 220 is positioned in the mounting space 211 and is rotatably connected with the unwinding frame 210, and the film winding rod 220 is used for winding a film roll to be coated; the traction member 230 is arranged on the base 100, the output end of the traction member 230 is connected with one end of the film winding rod 220, and the traction member 230 is used for providing constant tangential tension for the film winding rod 220; the film pressing member 240 is slidably coupled to the unwinding frame 210 in a vertical direction, and the film pressing member 240 abuts against the outer surface of the film roll to be coated. The gluing assembly 300 comprises a gluing box 310, a glue barrel 320, a gluing roller 330, a driving member 340, a guide roller 350 and a plasma generator 360, wherein the gluing box 310 is provided with an accommodating space 311, one side of the gluing box 310 is provided with a feed port 312, the corresponding side of the gluing box 310 with the feed port 312 is provided with a discharge port 313, the feed port 312 and the discharge port 313 are respectively communicated with the accommodating space 311, the glue barrel 320 is positioned in the accommodating space 311 and is connected with the bottom of the gluing box 310, the glue barrel 320 is used for being communicated with an external glue storage barrel, the gluing roller 330 is rotatably connected with the gluing box 310, the gluing roller 330 is immersed in the glue barrel 320, the driving member 340 is arranged on the inner surface of the gluing box 310, the output end of the driving member 340 is in driving connection with the gluing roller 330, the guide roller 350 is connected with the inner surface of the gluing box 310, a gluing channel 370 is arranged between the guide roller 350 and the gluing roller 330, and the gluing channel 370 is used for penetrating through a film roll to be coated, the plasma generator 360 is back to the glue spreader 330 and connected with the guide roller 350, and the plasma generator 360 is used for exciting plasma and degrading glue solution molecules dissipated in the accommodating space 311. The drying oven 400 is provided with a drying space 410, the input end of the drying space 410 is communicated with the discharge hole 313, the output end of the drying space 410 corresponds to the winding assembly 500, a heater 420 is arranged in the drying space 410, and the heater 420 is used for drying the coated release film. The winding assembly 500 comprises a winding frame 510, a winding motor 520 and a winding roller 530, the winding frame 510 is arranged on the base 100, the winding motor 520 is installed on the winding frame 510, the output end of the winding motor 520 is in driving connection with the winding roller 530, the winding roller 530 is in rotating connection with the winding frame 510, and the winding roller 530 is used for winding the dried release film under the driving of the winding motor 520.

According to the release film coating device 10, the coating box 310 is arranged, so that the coating operation of the film is limited in the coating box 310, the glue solution is prevented from escaping into the air, meanwhile, the plasma generator 360 is arranged, and the plasma excited by the plasma generator 360 promotes the glue solution molecules to be decomposed into non-toxic micromolecules, so that the damage of the glue solution to the health of operators is reduced; in addition, provide invariable tangential pulling force for film winding rod 220 through drawing piece 230, in the coating operation, the pulling force that the film received draws piece 230 is balanced with rolling component 500's effort, and is the same, and the inside tension of film keeps balanced with the pulling force that draws piece 230 and rolling component 500's effort respectively, and the film is in the tensioning state all the time, and the film is difficult for attaching on glue spreader 330 to the glue film thickness on the film has been guaranteed, and then promoted the quality from type film.

The base 100 is used for being connected with an external operating table and supporting the unwinding assembly 200, the gluing assembly 300, the drying box 400 and the winding assembly 500, so as to realize the installation and arrangement of the unwinding assembly 200, the gluing assembly 300, the drying box 400 and the winding assembly 500. In one embodiment, the base 100 is threadably engaged with an external console. Through with base 100 and external operation platform spiro union, can improve the stability that base 100 and external operation platform are connected, prevent at film coating operation in-process, base 100 drives all the other each parts and rocks for the external operation platform to guarantee the effective of film coating operation and go on.

The unwinding assembly 200 is used for providing raw materials for the film coating operation, so as to facilitate the continuous operation of the coating operation. The unwinding frame 210 is used to support the film winding rod 220, the drawing member 230, and the film pressing member 240, and to raise the horizontal height of the film roll to be coated, so as to prevent the film abrasion problem caused by the contact between the film roll to be coated and the base 100. Referring to fig. 2 and fig. 3, in an embodiment, the unwinding assembly 200 further includes a first limiting ring 250 and a second limiting ring 260, the first limiting ring 250 and the second limiting ring 260 are respectively accommodated in the installation space 211 and respectively penetrate through the film winding rod 220, a limiting space 270 is provided between the first limiting ring 250 and the second limiting ring 260, and the limiting space 270 is used for limiting the width of the film roll to be coated. Preferably, the first and second position-limiting

rings

250 and 260 are integrally formed with the film winding rod 220. In the unreeling process of the film roll, one side face of the film roll is abutted to the first limiting ring 250, and the other side face of the film roll is abutted to the second limiting ring 260, so that the film roll is always limited in the limiting space 270 under the common constraint of the first limiting ring 250 and the second limiting ring 260, the two side faces of the film roll are not easy to move, namely, the width of the film roll is always kept constant, so that the stability of the film roll is improved, and the normal running of the unreeling operation of the film roll is ensured. In one embodiment, the first retaining ring 250 and the second retaining ring 260 are respectively formed with a vent hole 251. Through seting up ventilation hole 251 on first spacing ring 250 and second spacing ring 260 respectively, can accelerate the air flow rate at film book both ends, prevent that moisture or dust in the environment from attaching the terminal surface of rolling up at the film to guarantee the cleanliness factor and the drying on film surface, thereby improve the quality from type membrane. In one embodiment, the outer surface of the film winding rod 220 is provided with a plurality of protrusions 221, and the protrusions 221 are used for abutting against the inner surface of the film roll to be coated. The salient points 221 are arranged on the surface of the film winding rod 220, so that the friction force between the film winding rod 220 and the film can be increased, the inner surface of the film roll and the film winding rod 220 are prevented from rotating relatively, the effective movement of the film on the outer layer of the film roll is ensured, and the film coating operation is facilitated to be effectively carried out.

The pulling member 230 is used for providing a constant tangential pulling force to the film winding rod 220 to tighten the film, so as to prevent the film from shaking due to uneven stress and further causing the film to be loose. It can also be understood that the pulling member 230 is used for braking the film winding rod 220, when the pulling member 230 pulls the film winding rod 220, the friction force of the film winding rod 220 to the film is balanced with the pulling force of the pulling member 230 to the film winding rod 220, in other words, the friction force of the film winding rod 220 to the film is always kept constant. Because the film unreels the in-process, the film is inside will produce tension in order to balance the frictional force of rolling up membrane pole 220 to the film, so, film internal tension keeps the constant value all the time, and the inside tensioning degree everywhere of film is unanimous, like this, when the rubber coating passageway 370 is worn to establish by the film, the film is difficult for sliding to glue spreader 330 to be favorable to controlling the thickness of the glue film on the film, in order to guarantee the quality from the type membrane.

Referring to fig. 2 again, in an embodiment, a side of the unwinding frame 210 adjacent to the pulling member 230 is provided with a preload member 212, the unwinding assembly 200 further includes a pulling rope 280, the pulling rope 280 is wound around the preload member 212, one end of the pulling rope 280 is connected to the output end of the pulling member 230, and the other end of the pulling rope 280 is connected to the loop side of the film winding rod 220. Preferably, the length of the pulling rope 280 between the pulling member 230 and the pre-tightening member 212 forms an acute angle with the length of the pulling rope 280 between the pre-tightening member 212 and the film winding rod 220. By arranging the pulling rope 280 and the pre-tightening piece 212, on one hand, the horizontal pulling force of the pulling piece 230 on the pulling rope 280 can be converted into the tangential pulling force of the pulling rope 280 on the film winding rod 220, so that the pulling piece 230 can tighten the film winding rod 220; on the other hand, when the section of the pulling rope 280 between the pulling member 230 and the pre-tightening member 212 and the section of the pulling rope 280 between the pre-tightening member 212 and the film winding rod 220 form an acute angle, the moving direction of the pulling rope 280 is changed, so that the distance between the pulling member 230 and the film winding rod 220 is shortened, the volume of the unwinding assembly 200 is favorably reduced, and the integration of the device is improved. In addition, by arranging the preload piece 212, the preload piece 212 generates friction force on the pulling rope 280, so that the internal tension of the pulling rope 280 between the pulling piece 230 and the preload piece 212 and the internal tension of the pulling rope 280 between the preload piece 212 and the film winding rod 220 are respectively the same as the friction force of the preload piece 212 on the pulling rope 280, and the two pulling ropes 280 are respectively in a tensioning state, so that the pulling force of the pulling piece 230 on the pulling rope 280 is consistent with the pulling force of the pulling rope 280 on the film winding rod 220, and the pulling efficiency of the pulling piece 230 is ensured. In one embodiment, an anti-slip layer is attached to the outer surface of the pre-tightening member 212. By attaching the anti-slip layer on the outer surface of the pre-tightening member 212, the friction force of the pre-tightening member 212 to the pulling rope 280 can be increased, and the problem that the pulling member 230 pulls the film winding rod 220 to fail due to the fact that the pulling rope 280 slides off the pre-tightening member 212 is prevented.

The film pressing member 240 is adapted to slide relative to the unwinding frame 210 under its own weight to press the film roll on the film winding bar 220. In an embodiment, the unwinding frame 210 includes a bottom plate, a first vertical plate and a second vertical plate, the bottom plate is used for being connected to an external console, the first vertical plate and the second vertical plate are respectively disposed in two opposite end regions of the same side of the bottom plate, an installation space 211 is provided between the first vertical plate and the second vertical plate, a guide slot 213 is respectively disposed on the first vertical plate and the second vertical plate, the two guide slots 213 are respectively communicated with the installation space 211, one end of the film pressing member 240 is inserted into one guide slot 213 and slidably connected to the unwinding frame 210, and the other end of the film pressing member 240 is inserted into the other guide slot 213 and slidably connected to the unwinding frame 210. When the film pressing member 240 is placed in the guide groove 213, the film pressing member 240 moves along the guide groove 213 until abutting against the outer surface of the film roll due to the self-weight of the film pressing member, so that the film is also subjected to the friction force of the film pressing member 240 in the unwinding process, and the tension in the film needs to be used for balancing the tension of the traction member 230 and the friction force of the film pressing member 240, that is, the tension in the film is further increased to prevent the film section between the film winding rod 220 and the guide roller 350 from being loose in the unwinding process of the film, and the film section is always in a tensioned state to prevent the film from being attached to the glue coating roller 330, thereby ensuring the effective operation of the film coating operation.

In order to further improve the tension of the film, in an embodiment, the release film coating apparatus further includes a tension assembly 600, the tension assembly 600 includes a first tension rod 610 and a second tension rod 620, one end of the first tension rod 610 is connected to one side surface of the unwinding frame 210, the other end of the first tension rod 610 is connected to the other side surface of the unwinding frame 210, a distance between the second tension rod 620 and the bottom surface of the unwinding frame 210 is smaller than a distance between the first tension rod 610 and the bottom surface of the unwinding frame 210 and a distance between the film winding rod 220 and the bottom surface of the unwinding frame 210, the first tension rod 610 and the second tension rod 620 are respectively used for winding the film to be coated, and a winding direction of the film to be coated on the first tension rod 610 is opposite to a winding direction of the film to be coated on the film winding rod 220 and the second tension rod 620. That is, the section of the film to be coated between the film winding rod 220 and the first tensioning rod 610 and the section of the film between the first tensioning rod 610 and the second tensioning rod 620 have an included angle of other than 180 degrees, which is exemplified by the section of the film between the film winding rod 220 and the first tensioning rod 610. The section of film between the film winding rod 220 and the first tensioning rod 610 is simultaneously subjected to the friction force of the film winding rod 220 and the first tensioning rod 610, and as such, tension is generated in the film to balance the friction force of the film winding rod 220 and the friction force of the first tensioning rod 610, so that the section of film is in a tensioned state. Similarly, the film section between the first tensioning rod 610 and the second tensioning rod 620 and the film section between the second tensioning rod 620 and the glue spreader 330 are also in a tensioned state, so that the tensioning degree of the film to be processed can be further improved, and the processing efficiency of the film is further improved.

The glue application member 300 is used to apply a glue solution to the surface of the film to improve the adhesiveness of the surface of the film. The glue spreading box 310 is used for limiting the location of film coating operation, that is, the air dispersed with glue solution molecules is limited in the glue spreading box 310, so as to be beneficial to carrying out centralized treatment on the glue solution molecules in the air, and further reduce the damage of the glue solution molecules to the health of operators. In one embodiment, the glue box 310 is made of plexiglass. Because organic glass has the light transmissivity, when adopting organic glass preparation rubber coating case 310, can be convenient for the operation personnel monitor the film coating operation condition, know the equipment behavior. In one embodiment, the glue application tank 310 is provided with an access door 314. Through set up access door 314 on rubber coating case 310, when the spare part in the subassembly 300 of gluing was damaged, the operation personnel can open access door 314, maintains equipment to do benefit to in time response equipment trouble, the effective of guarantee film coating operation goes on. It should be noted that the feeding port 312 of the glue box 310 is used for feeding the film pulled out from the unwinding assembly 200, and the film passes through the discharging port 313 of the glue box 310 and winds around the winding roller 530 after being coated in the glue box 310, in other words, the feeding port 312 and the discharging port 313 of the glue box 310 provide a passage for the interaction between the glue box 300 and the external assembly, so as to facilitate the film coating operation.

The glue barrel 320 is used for providing glue for the film coating operation. In one embodiment, the glue barrel 320 is provided with a liquid level meter 321, a sensing end of the liquid level meter 321 is inserted into a lower portion of the liquid level of the glue barrel 320, and a transmitting end of the liquid level meter 321 is electrically connected to an external display. Specifically, after the liquid level meter 321 is inserted into the glue solution barrel 320, pressure is generated on a sensing membrane of a sensing end of the liquid level meter 321 by glue solution, a circuit of the sensing end is changed, and a resistance value and a current value in the liquid level meter 321 are changed synchronously, so that a transmission end of the liquid level meter 321 transmits hydraulic information to an external display in an electric signal mode and finally shows the hydraulic information in an image mode, that is, the liquid level height shows the hydraulic information in the image mode, so that an operator can obtain the liquid level information in the glue solution barrel 320 conveniently, and glue solution is added into the glue solution barrel 320 in time according to the liquid level information.

The glue roller 330 is adapted to rotate under the action of the driving member 340 and to be in full contact with the glue in the glue barrel 320. Because the part of the glue spreader 330 is immersed in the glue solution barrel 320, different parts on the outer surface of the glue spreader 330 are in contact with the glue solution in the rotation process of the glue spreader 330, so that the glue solution can be uniformly adhered to the outer surface of the glue spreader 330, after the film penetrates through the glue coating channel 370, the distance between the film and the glue spreader 330 is small, when the distance is smaller than the thickness of the glue layer adhered to the glue spreader 330, the glue solution on the glue spreader 330 is transferred to the surface of the film, and the surface of the film is covered with a layer of glue solution, so that the coating operation of the film is realized. The guide roller 350 is used to abut against the film to be coated so that the film is close to the applicator roller 330 to facilitate the adhesion of the glue solution on the surface of the film, and in addition, the guide roller 350 is used to define the width of the glue channel 370 together with the applicator roller 330 so as to control the thickness of the glue layer coated on the film. Referring to fig. 5, in an embodiment, the glue spreading assembly 300 further includes a fixing frame 380, two sides of the fixing frame 380 are respectively provided with a limiting hole 381, two ends of the guide roller 350 are respectively provided with external threads and respectively sleeved with a nut 382, one end of the guide roller 350 penetrates through the limiting hole 381 and is screwed with the nut 382, and the nut 382 abuts against an edge of the limiting hole 381; the other end of the guide roller 350 is inserted into another position-limiting hole 381 and is screwed with another nut 382, and the nut 382 abuts against the edge of the position-limiting hole 381. Therefore, the relative position relationship between the guide roller 350 and the glue spreader 330, that is, the width of the glue coating channel 370, can be adjusted by changing the position of the tail end of the guide roller 350 in the limiting hole 381, so that the glue layer coating amount on the surface of the film can be controlled by adjusting the position of the guide roller 350 under the condition that the thickness of the glue layer on the glue spreader 330 is constant, in other words, the purpose of adjusting the thickness of the glue layer on the surface of the film is achieved, and the quality of the release film is ensured.

In order to further adjust the thickness of the glue layer on the surface of the film, in an embodiment, the glue spreading assembly 300 further includes a scraper 390, the scraper 390 is connected to the inner surface of the glue spreading box 310, the end of the scraper 390 is located between the glue spreading roller 330 and the discharge port 313, and the scraper 390 is used for adjusting the thickness of the glue layer on the coated release film. Preferably, the blade 390 is slidably connected to the inner surface of the glue application booth 310. In this way, by adjusting the relative position relationship between the scraper 390 and the inner surface of the glue applying box 310, the distance between the end of the scraper 390 and the release film can be changed, in other words, by adjusting the position of the scraper 390, the glue line thickness on the surface of the release film can be defined. Specifically, when the glue layer on the release film is abutted to the scraper 390, the scraper 390 will scrape the too thick glue material on the release film, thereby controlling the thickness of the glue layer on the release film, making the thickness of the glue layer on each part of the surface of the release film consistent, and further ensuring the uniformity of the surface property of the release film.

The plasma generator 360 is used for exciting plasma under the condition of connecting an external power supply and providing energy for the decomposition of glue solution molecules in the air in the glue spreading box 310. Specifically, after the plasma generator 360 is connected to an external power supply, the boost circuit of the plasma generator 360 converts the externally loaded low voltage into a positive high voltage and a negative high voltage, the positive high voltage and the negative high voltage ionize the air around the generator and form positive ions and negative ions, and the positive ions and the negative ions release huge energy instantly when carrying out positive and negative charge neutralization in the gluing box 310 to provide energy for decomposition of glue solution molecules in the air in the gluing box 310.

The drying oven 400 is used for drying glue solution on the film, and accelerates the adhesion and bonding of the glue solution layer and the film so as to shorten the production period of the release film and achieve the purpose of improving the production efficiency of the release film. In the process of drying the release film, the heater 420 is connected with an external power supply, the heating wire of the heater 420 generates heat and releases heat, so that the temperature in the drying oven 400 rises, after the coated release film is introduced into the drying oven 400, the solvent or water in the glue solution layer of the release film is heated and vaporized, glue solution molecules on the release film are firmly connected, and then a coating film is formed, namely, a release film finished product is obtained. Referring to fig. 6, in an embodiment, the top of the drying box 400 is provided with a plurality of air holes 430, and the air holes 430 are used for communicating with an external air draft device. Air hole 430 is seted up through the top at drying cabinet 400, can derive to outside updraft ventilator with the steam that produces in the drying process of parting film, prevents that steam from returning to congealing to on the parting film to guarantee to go on effectively from the type film drying operation.

Referring to fig. 7, the winding assembly 500 is used for bundling the dried finished release film to facilitate the operation of loading and unloading the release film, and in addition, the winding assembly 500 is also used for pulling the release film to move, that is, the release film continuously passes through the glue coating channel 370 for glue coating under the action of the winding assembly 500, thereby ensuring the effective operation of film coating operation. Specifically, the tail end of the film roll sequentially penetrates through the feeding hole 312 of the gluing box 310, the discharging hole 313 of the gluing box 310 and the drying box 400 and is finally wound on the winding roller 530, in the working process of the release film coating device, the winding motor 520 is connected with an external power supply and drives the winding roller 530 to rotate, that is, the winding roller 530 rotates relative to the film, so that the release film dried by the drying box 400 is wound on the winding roller 530 one by one to form a release film roll, thereby realizing the collection of the release film and facilitating the carrying of the release film roll by an operator.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A release film coating device is characterized by comprising a base, an unreeling component, a gluing component, a drying box and a reeling component, wherein the unreeling component, the gluing component, the drying box and the reeling component are sequentially arranged on the base,

the unwinding assembly comprises an unwinding frame, a film winding rod, a traction piece and a film pressing piece, the unwinding frame is arranged on the base and is provided with an installation space, the film winding rod is located in the installation space and is in rotary connection with the unwinding frame, and the film winding rod is used for winding a film roll to be coated; the traction piece is arranged on the base, the output end of the traction piece is connected with one end of the film winding rod, and the traction piece is used for providing constant tangential tension for the film winding rod; the film pressing piece is connected with the unwinding frame in a sliding mode along the vertical direction and is abutted to the outer surface of the film roll to be coated;

the glue spreading assembly comprises a glue spreading box, a glue solution barrel, a glue spreading roller, a driving piece, a guide roller and a plasma generator, the glue spreading box is provided with an accommodating space, one side of the glue spreading box is provided with a feed inlet, the glue spreading box is provided with a discharge outlet on the corresponding side of the feed inlet, the feed inlet and the discharge outlet are respectively communicated with the accommodating space, the glue solution barrel is positioned in the accommodating space and connected with the bottom of the glue spreading box, the glue solution barrel is used for being communicated with an external glue solution storage barrel, the glue spreading roller is rotationally connected with the glue spreading box, the glue spreading roller is immersed in the glue solution barrel, the driving piece is installed on the inner surface of the glue spreading box, the output end of the driving piece is in driving connection with the glue spreading roller, the guide roller is connected with the inner surface of the glue spreading box, and a glue spreading channel is arranged between the guide roller and the glue spreading roller, the glue coating channel is used for penetrating the film roll to be coated, the plasma generator is back to the glue coating roller and is connected with the guide roller, and the plasma generator is used for exciting plasma and degrading glue solution molecules dissipated in the accommodating space;

a liquid level meter is arranged in the glue barrel, the sensing end of the liquid level meter is inserted into the liquid level of the glue barrel, and the transmission end of the liquid level meter is electrically connected with an external display;

the gluing assembly further comprises a fixing frame, wherein two sides of the fixing frame are respectively provided with a limiting hole, two ends of the guide roller are respectively provided with external threads and are respectively sleeved with a nut, one end of the guide roller penetrates through the limiting hole and is in threaded connection with the nut, and the nut is abutted against the edge of the limiting hole; the other end of the guide roller penetrates through the other limiting hole and is in threaded connection with the other nut, and the nut is abutted against the edge of the limiting hole;

the drying box is provided with a drying space, the input end of the drying space is communicated with the discharge hole, the output end of the drying space corresponds to the winding assembly, and a heater is arranged in the drying space and used for drying the coated release film;

the winding assembly comprises a winding frame, a winding motor and a winding roller, the winding frame is arranged on the base, the winding motor is installed on the winding frame, the output end of the winding motor is in driving connection with the winding roller, the winding roller is in rotating connection with the winding frame, and the winding roller is used for winding the dried release film under the driving of the winding motor;

a preload piece is arranged on one side face, close to the traction piece, of the unwinding frame, the unwinding assembly further comprises a traction rope, the preload piece is wound on the traction rope, one end of the traction rope is connected with the output end of the traction piece, and the other end of the traction rope is connected with the side face of the ring of the film winding rod; an anti-slip layer is attached to the outer surface of the pre-tightening piece;

the unwinding frame comprises a bottom plate, a first vertical plate and a second vertical plate, the bottom plate is used for being connected with an external operation table, the first vertical plate and the second vertical plate are respectively arranged in the areas of two opposite end parts of the same side surface of the bottom plate, an installation space is arranged between the first vertical plate and the second vertical plate, a guide groove is respectively arranged on the first vertical plate and the second vertical plate, the two guide grooves are respectively communicated with the installation space, one end of the film pressing piece is inserted into one guide groove and is in sliding connection with the unwinding frame, and the other end of the film pressing piece is inserted into the other guide groove and is in sliding connection with the unwinding frame;

the unreeling assembly further comprises a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are respectively accommodated in the installation space and respectively penetrate through the film reeling rod, and the first limiting ring and the second limiting ring are jointly used for limiting the width of the film roll to be coated;

from type membrane coating unit still includes the tensioning subassembly, the tensioning subassembly includes first tensioning pole and second tensioning pole, the one end of first tensioning pole with a side of unreeling the frame is connected, the other end of first tensioning pole with another side of unreeling the frame is connected, the second tensioning pole with it is less than to unreel interval between the frame bottom surface first tensioning pole with unreel interval between the frame bottom surface and roll up the membrane pole with unreel interval between the frame bottom surface, first tensioning pole with the second tensioning pole is used for respectively around establishing the film of treating the coating, just the film of treating the coating is in on the first tensioning pole around establishing the direction rather than being in roll up the membrane pole and be in on the second tensioning pole around establishing the opposite direction.

2. The release film coating apparatus according to claim 1, wherein the first and second limiting rings are respectively provided with a vent hole.

3. The release film coating device according to claim 1, wherein the outer surface of the film winding rod is provided with a plurality of salient points, and the salient points are used for abutting against the inner surface of the film roll to be coated.

4. The release film coating device according to claim 1, wherein the coating assembly further comprises a scraper, the scraper is connected with the inner surface of the coating box, the tail end of the scraper is located between the coating roller and the discharge hole, and the scraper is used for adjusting the thickness of the upper adhesive layer of the coated release film.

5. The release film coating apparatus according to claim 1, wherein the glue application tank is made of organic glass.

6. The release film coating apparatus according to claim 1, wherein the glue application tank is provided with an access door.

7. The release film coating device of claim 1, wherein the top of the drying oven is provided with a plurality of air holes, and the air holes are used for being communicated with an external air draft device.