A processing technology of PVC-PVDC composite film

Abstract

The present application discloses a processing technology for a PVC-PVDC composite film, and relates to the technical field of composite films, which includes the following steps: S1: Gluing: The PVC substrate is glued by a glue coating mechanism, and the glue coating mechanism includes a glue pool, a glue coating roller, a pressure roller, and a driving member, and a glue taking component is arranged in the glue coating roller; S2: Drying: The PVC substrate after glue coating enters a drying tunnel for drying; S3: Lamination: The dried PVC substrate and the PVDC substrate are laminated by a lamination mechanism; S4: Reeling: The reeling mechanism reels the laminated PVC-PVDC composite film. The present application utilizes a glue coating mechanism to glue the PVC substrate, and during the rotation of the glue coating roller, the glue taking component takes the glue in the glue pool and sprinkles the glue on the surface of the glue coating roller, and the mesh of the glue coating roller then adsorbs the glue, so that the change in the fluidity of the glue will not affect the adsorption of the glue, thereby making the glue coating on the PVC substrate more uniform.

Description

Technical Field

[0001] The present application relates to the technical field of composite films, and in particular to a processing technology for a PVC-PVDC composite film. Background Art

[0002] PVC film has excellent transparency and glossiness, as well as good waterproofness and weather resistance. PVDC film has excellent barrier properties and moisture barrier properties. Therefore, PVC-PVDC composite film has excellent transparency, waterproofness, weather resistance, barrier and moisture barrier properties, and is suitable for use as packaging film.

[0003] At present, most PVC-PVDC composite films are made by dry composite process. A layer of glue is coated on the PVC substrate using a glue coating mechanism. The PVC substrate passes through a drying oven to remove the solvent in the glue and dry the glue. After the PVC substrate is transported out of the drying oven, it is bonded with the PVDC substrate under hot pressing to form a PVC-PVDC composite film.

[0004] The glue coating mechanism consists of a glue tank and a coating roller. The coating roller is rotatably installed on the glue tank, and the lower half of the coating roller is immersed in the glue tank. During the rotation of the coating roller, the texture on the coating roller can absorb the glue on the coating roller, and the coating roller then coats the glue on the PVC substrate.

[0005] The effect of the coating roller in absorbing the glue is related to the fluidity of the glue. When the weather is cold, the indoor temperature is low, and the fluidity of the glue is reduced. During the rotation of the coating roller, it is difficult for the glue to quickly fill the mesh of the coating roller. When the weather is hot, the indoor temperature is high, and the fluidity of the glue increases. During the rotation of the coating roller, part of the glue adsorbed in the mesh of the coating roller will flow down along the coating roller, which will cause uneven coating of the glue and affect the bonding effect of the composite film. Summary of the invention

[0006] In order to improve the problem of uneven coating of adhesive solution, the present application provides a processing technology for a PVC-PVDC composite film.

[0007] The processing technology of a PVC-PVDC composite film provided in this application adopts the following technical scheme:

[0008] A processing technology for a PVC-PVDC composite film comprises the following steps: S1: gluing: a PVC substrate is gluing through a gluing mechanism; S2: drying: the gluing PVC substrate enters a drying tunnel for drying; S3: pressing: the dried PVC substrate and the PVDC substrate are pressed through a pressing mechanism; S4: rolling: the rolling mechanism rolls up the pressed PVC-PVDC composite film; in step S1, the gluing mechanism comprises a glue pool, a gluing roller, a pressing roller and a driving member, the gluing roller and the pressing roller are both rotatably arranged on the glue pool, the bottom of the pressing roller abuts against the top of the gluing roller, the driving member is arranged on the glue pool and is used to drive the gluing roller and the pressing roller to rotate, the PVC substrate passes between the gluing roller and the pressing roller, a glue taking component is arranged in the gluing roller, and during the rotation of the gluing roller, the glue taking component takes glue liquid and sprinkles it on the gluing roller.

[0009] By adopting the above technical scheme, when the PVC substrate is coated with glue, the driving part drives the glue coating roller and the pressure roller to rotate. During the rotation of the glue coating roller, the glue liquid in the glue pool is absorbed by the mesh and the glue liquid is coated on the PVC substrate. At the same time, during the rotation of the glue coating roller, the glue taking component holds the glue liquid in the glue pool and sprinkles the glue liquid on the surface of the glue coating roller. The mesh of the glue coating roller then absorbs the glue liquid, so that the change in the fluidity of the glue liquid will not affect the adsorption of the glue liquid, thereby making the glue liquid coated on the PVC substrate more uniform.

[0010] Preferably, the glue picking assembly includes an eccentric roller, a plurality of slide plates, a first glue picking plate and a first elastic member, a first rotating shaft is fixedly arranged in the glue pool, the glue coating roller is coaxially rotatably arranged on the first rotating shaft, a accommodating cavity is formed inside the glue coating roller, the eccentric roller is eccentrically fixedly arranged on the first rotating shaft and is located in the accommodating cavity, the eccentric side of the eccentric roller is located on the side of the first rotating shaft away from the PVC substrate, a plurality of slide grooves connecting the accommodating cavity are arranged at intervals along the circumference of the glue coating roller, a plurality of slide plates are slidably arranged in the plurality of slide grooves along the diameter direction of the glue coating roller, a plurality of the first elastic members are arranged in the accommodating cavity of the glue coating roller and are used to push the plurality of slide plates to move and abut against the eccentric roller, a plurality of the first glue picking plates are fixedly arranged at the ends of the plurality of slide plates away from the eccentric roller, and a plurality of first accommodating grooves for accommodating the first glue picking plates are opened on the outer side wall of the glue coating roller.

[0011] By adopting the above technical solution, the glue roller drives multiple slides to rotate synchronously when rotating, the first elastic member acts on the slide so that one end of the slide always abuts against the outer wall of the eccentric roller, when the slide moves to the eccentric side of the eccentric roller, the slide is located in the glue in the glue pool, the eccentric roller pushes the slide to slide outside the glue roller, the slide drives the first glue plate to move, when the glue roller drives the slide to move out of the glue pool, the slide and the first glue plate take out the glue, the glue roller drives the slide to gradually move toward the direction close to the PVC substrate, the slide gradually moves away from the eccentric side of the eccentric roller, the first elastic member drives the first glue plate to gradually move toward the direction close to the glue roller through the slide, at this time the glue can be poured on the glue roller, when the slide moves to the PVC substrate, the first glue plate moves into the first receiving groove. With such a configuration, the glue in the glue pool can be taken and poured on the glue roller during the rotation of the glue roller, and the PVC substrate will not be damaged when the glue roller is applying glue.

[0012] Preferably, baffles are fixedly installed at both ends of the slide plate along the axis direction of the glue coating roller, and the baffles are slidably arranged in the glue coating roller. The ends of the two baffles are fixedly connected to the two ends of the first glue taking plate, and a receiving groove is formed between the slide plate, the first glue taking plate and the two baffles.

[0013] By adopting the above technical solution, when the glue coating roller drives the slide plate to move and collect the glue liquid, the glue liquid is collected in the collecting groove, and the two baffles block the collected glue liquid, so that the collected glue liquid is not easy to slide off the slide plate.

[0014] Preferably, a plurality of second glue picking plates are arranged on the slide plate so as to rotate at intervals along the diameter direction of the glue coating roller, a plurality of elastic reset parts are arranged inside the slide plate, the elastic reset parts drive the second glue picking plates to rotate to a vertical slide plate state, a plurality of second accommodating grooves for accommodating the second glue picking plates are arranged on the slide plate, and a plurality of first glue row holes connected to the second accommodating grooves are opened inside the slide plate.

[0015] By adopting the above technical solution, when the slide plate slides out of the slide groove, the slide plate drives the second glue taking plate to slide out of the slide groove, and the elastic reset part drives the second glue taking plate to rotate and open to be perpendicular to the slide plate. When the slide plate slides into the glue coating roller, the second glue taking plate gradually rotates and closes into the second receiving groove. At this time, the second glue taking plate squeezes the glue in the receiving groove out of the receiving groove through the first row of glue holes, and the squeezed glue flows onto the glue coating roller, thereby making the distribution of the glue on the glue coating roller more uniform.

[0016] Preferably, the slide plate is provided with an adjusting component for adjusting the aperture of the first row of glue holes. When the slide plate slides out of the slide groove, the adjusting component gradually increases the aperture of the first row of glue holes. When the slide plate slides into the slide groove, the adjusting component gradually reduces the aperture of the first row of glue holes.

[0017] By adopting the above technical solution, when the glue coating roller drives the slide plate to slide out of the glue pool, the aperture of the first row of glue holes is relatively small, and the glue in the collecting tank is not easy to drip into the glue pool through the first row of glue holes. When the glue coating roller drives the slide plate to gradually move toward the PVC substrate, the adjustment component gradually adjusts to increase the aperture of the first row of glue holes, thereby facilitating the glue in the collecting tank to be squeezed out through the first row of glue holes and flow to the glue coating roller.

[0018] Preferably, the adjustment assembly includes an adjustment plate, a drive plate and a second elastic member, the adjustment plate is slidably arranged in the slide plate along the diameter direction of the glue coating roller, the second elastic member is arranged in the slide plate, the second elastic member abuts the end of the adjustment plate and is used to push the adjustment plate to move in the direction close to the eccentric roller, the adjustment plate is provided with a plurality of adjustment holes at intervals, and the plurality of adjustment holes correspond to a plurality of first glue row holes, the drive plate is slidably arranged in the slide plate along the moving direction of the vertical adjustment plate, one end of the drive plate extends into the slide plate and is located on the side of the adjustment plate away from the second elastic member, the contact surfaces of the drive plate and the adjustment plate are both wedge-shaped surfaces and fit each other, a driving inclined groove connected to the slide groove is provided on the side of the glue coating roller close to the drive plate, the width of the driving inclined groove gradually decreases from the eccentric roller to the glue coating roller, the other end of the drive plate extends into the glue coating roller and abuts the inner wall of the driving inclined groove, when the slide plate slides out of the slide groove, the slide plate drives the drive plate to slide in the driving inclined groove, the driving inclined groove pushes the drive plate to move, and the drive plate pushes the adjustment plate to move through the wedge-shaped surface and gradually increases the aperture of the first glue row hole.

[0019] By adopting the above technical scheme, when the glue coating roller drives the slide plate to gradually move toward the direction approaching the PVC substrate, the slide plate drives the driving plate to move in the driving inclined groove in the direction away from the eccentric roller, the width of the driving inclined groove gradually decreases and pushes the driving plate to move toward the inside of the slide plate, and during the movement of the driving plate, the adjusting plate is driven by the wedge surface to move in the direction away from the eccentric roller, the adjusting plate drives the adjusting hole to move so that the overlapping area between the adjusting hole and the first row of glue holes gradually increases, thereby continuously increasing the aperture of the first row of glue holes, when the glue coating roller drives the slide plate to gradually move away from the PVC substrate, the slide plate drives the driving plate to move toward the eccentric roller, the second elastic member pushes the adjusting plate to move, and the adjusting plate drives the adjusting hole to move so that the overlapping area between the adjusting hole and the first row of glue holes gradually decreases, thereby continuously reducing the aperture of the first row of glue holes.

[0020] Preferably, the glue coating roller is formed with a rounded corner on one side of the opening end of the slide groove close to the second glue taking plate.

[0021] By adopting the above technical solution, when the slide plate drives the second glue taking plate to move into the glue coating roller, the second glue taking plate abuts against the rounded corner of the glue coating roller, and the rounded corner gradually pushes the second glue taking plate to rotate and close, so that the second glue taking plate rotates and closes at a uniform speed, making it easier for the second glue taking plate to squeeze the glue liquid out of the first row of glue holes.

[0022] Preferably, the pressure roller is located obliquely above the discharging end of the glue coating roller, the pressure roller abuts against the glue coating roller, and a glue storage area is formed at the abutment point between the pressure roller and the glue coating roller and at a side close to the feeding end of the glue coating roller.

[0023] By adopting the above technical solution, when the slide plate drives the first glue taking plate to move into the first containing tank, the first containing tank squeezes out all the glue in the taking tank, and the glue flows into the glue storage area between the pressure roller and the glue coating roller, thereby making the glue coating more uniform.

[0024] Preferably, a first arc surface is formed on a side of the eccentric roller close to the rubber storage area, and the arc center of the first arc surface is located on the axis of the first rotating shaft.

[0025] By adopting the above technical solution, when the glue coating roller drives the slide plate to move close to the glue storage area, the slide plate moves to the first arc surface of the eccentric roller. At this time, the slide plate drives the first glue taking plate to move into the first receiving groove, so that when the glue coating roller is coating the glue, the first glue taking plate will not cause damage to the PVC substrate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Use the glue coating mechanism to coat the PVC substrate with glue. During the rotation of the glue coating roller, the glue taking component takes the glue in the glue pool and sprinkles the glue on the surface of the glue coating roller. The mesh of the glue coating roller then absorbs the glue, so that the change in the fluidity of the glue will not affect the adsorption of the glue, thereby making the glue coating on the PVC substrate more uniform;

[0028] 2. With the help of the second glue-taking plate, when the slide plate slides into the glue-coating roller, the second glue-taking plate gradually rotates and closes into the second containing groove. At this time, the second glue-taking plate squeezes the glue in the containing groove out of the containing groove through the first row of glue holes, and the squeezed glue flows onto the glue-coating roller, so that the glue on the glue-coating roller is more evenly distributed;

[0029] 3. Through the adjustment component, when the glue roller drives the slide plate to slide out of the glue pool, the aperture of the first row of glue holes is small, and the glue in the receiving tank is not easy to drip into the glue pool through the first row of glue holes. When the glue roller drives the slide plate to gradually move closer to the PVC substrate, the adjustment component gradually increases the aperture of the first row of glue holes, thereby facilitating the glue in the receiving tank to be squeezed out through the first row of glue holes and flow to the glue roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A flow chart of the processing technology of the PVC-PVDC composite film for this application;

[0031] Figure 2 This is a schematic diagram of the overall structure of the processing technology of the PVC-PVDC composite film of this application;

[0032] Figure 3 The processing technology of the PVC-PVDC composite film for this application is a schematic diagram highlighting the gluing mechanism;

[0033] Figure 4 The processing technology of the PVC-PVDC composite film of this application is a partial structural cross-sectional view highlighting the first rotating shaft and the second rotating shaft;

[0034] Figure 5 The processing technology of the PVC-PVDC composite film for this application is a partial structural cross-sectional diagram highlighting the glue extraction component;

[0035] Figure 6 The processing technology of PVC-PVDC composite film for this application is an exploded schematic diagram highlighting the partial structure of the slideway;

[0036] Figure 7 The processing technology of the PVC-PVDC composite film for this application is a schematic diagram of a part of the structure of the skateboard to highlight;

[0037] Figure 8 The processing technology of the PVC-PVDC composite film of this application is a partial structural schematic diagram highlighting the first row of glue holes;

[0038] Fig. 9 The processing technology of the PVC-PVDC composite film for this application is a partial structural cross-sectional view highlighting the adjustment component.

[0039] Figure numerals: 1, glue coating mechanism; 11, glue pool; 12, glue coating roller; 13, pressure roller; 14, driving member; 2, drying tunnel; 3, pressing mechanism; 4, winding mechanism; 5, glue taking assembly; 51, eccentric roller; 52, slide plate; 53, first glue taking plate; 54, first elastic member; 6, first rotating shaft; 7, accommodating chamber; 8, slide groove; 9, baffle plate; 10, taking groove; 15, first accommodating groove; 16, second glue taking plate; 17, second accommodating groove; 18, Elastic reset member; 19, first row of glue holes; 20, adjustment assembly; 201, adjustment plate; 202, drive plate; 203, second elastic member; 21, adjustment hole; 22, drive inclined groove; 23, fillet; 24, glue storage area; 25, first arc surface; 26, first unwinding mechanism; 27, second unwinding mechanism; 28, conveying roller; 29, push plate; 30, roller; 31, second arc surface; 32, second rotating shaft; 33, retaining groove; 34, second row of glue holes. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-Figure 9 This application is described in further detail.

[0041] The embodiment of the present application discloses a processing technology for a PVC-PVDC composite film.

[0042] Reference Figure 1 and Figure 2 A processing technology of PVC-PVDC composite film comprises the following steps:

[0043] S1: Gluing: The first unwinding mechanism 26 delivers the PVC substrate, and the PVC substrate is coated with glue by the gluing mechanism 1;

[0044] S2: Drying: The glue-coated PVC substrate passes through the conveying roller 28 and enters the drying tunnel 2, where the glue on the PVC substrate is dried;

[0045] S3: Lamination: The second unwinding mechanism 27 delivers the PVDC substrate, and the dried PVC substrate and the PVDC substrate are laminated by the lamination mechanism 3;

[0046] S4: Rewinding: The rewinding mechanism 4 rewinds the laminated PVC-PVDC composite film.

[0047] Reference Figure 3 and Figure 4 The glue coating mechanism 1 includes a glue pool 11, a glue coating roller 12, a pressure roller 13 and a driving member 14. A first rotating shaft 6 is fixedly installed in the glue pool 11, and the glue coating roller 12 is rotatably installed on the first rotating shaft 6, and the lower half of the glue coating roller 12 is immersed in the glue liquid. A second rotating shaft 32 is rotatably installed in the glue pool 11, and the pressure roller 13 is coaxially fixedly installed on the second rotating shaft 32. The pressure roller 13 is located above the glue coating roller 12, and the bottom of the pressure roller 13 abuts against the top of the glue coating roller 12. The driving member 14 is fixedly installed on the glue pool 11, and the driving end of the driving member 14 is connected to the glue coating roller 12 through a gear and a gear ring. The ends of the glue coating roller 12 and the pressure roller 13 away from the driving member 14 are connected through two gears. In this application, the driving member 14 can be selected as a servo motor.

[0048] The driving member 14 drives the glue coating roller 12 to rotate, and the glue coating roller 12 drives the pressure roller 13 to rotate synchronously in the opposite direction. During the rotation of the glue coating roller 12, the glue liquid is absorbed through the mesh on its outer wall. When the PVC substrate passes between the glue coating roller 12 and the pressure roller 13, the glue coating roller 12 coats the glue liquid on the PVC substrate.

[0049] Reference Figure 5The pressure roller 13 is located obliquely above the discharging end of the glue coating roller 12, and a glue storage area 24 is formed between the pressure cover and the glue coating roller 12 and on one side of the feeding end of the glue coating roller 12, and the glue storage area 24 is located on the top of the glue coating roller 12 near the pressure roller 13. When the glue coating roller 12 absorbs too much glue, the glue can be stored in the glue storage area 24. When the glue coating roller 12 absorbs too little glue, the glue in the glue storage area 24 can continue to provide glue for the glue coating roller 12, so that the glue is more evenly distributed on the PVC substrate.

[0050] Reference Figure 5 and Figure 6 , a glue taking assembly 5 is installed on the glue coating roller 12, and the glue taking assembly 5 includes an eccentric roller 51, eight slide plates 52, a first glue taking plate 53 and a plurality of first elastic members 54. A slide groove 8 is provided on the glue coating roller 12 along its own axial direction, and eight slide grooves 8 are provided at equal intervals along the circumference of the glue coating roller 12. The eight slide plates 52 are slidably installed in the eight slide grooves 8 along the diameter direction of the glue coating roller 12, and the first glue taking plate 53 is fixedly installed at the end of the slide plate 52 away from the first rotating shaft 6 along the direction perpendicular to the slide plate 52. The glue coating roller 12 can drive the slide plate 52 to rotate, and the first glue taking plate 53 is located at the front side of the slide plate 52 in the rotation direction, and a first receiving groove 15 connected with the slide groove 8 is provided on the glue coating roller 12, and the first receiving groove 15 is used to accommodate the first glue taking plate 53.

[0051] Reference Figure 5 and Figure 7 The two ends of the slide plate 52 along the length direction are fixedly mounted with baffles 9, and the two ends of the slide groove 8 along the length direction of the slide plate 52 are provided with baffle grooves 33, and the baffles 9 are slidably mounted in the baffle grooves 33. The baffles 9 are perpendicular to the slide plate 52, and the baffles 9 are located at the front side of the slide plate 52 in the rotation direction. The ends of the two baffles 9 are fixedly connected to the two ends of the first glue taking plate 53, and the slide plate 52, the first glue taking plate 53, the two baffles 9 and the glue applying roller 12 form a receiving groove 10.

[0052] Reference Figure 5 , Figure 6 and Figure 7, a receiving chamber 7 is provided inside the glue coating roller 12, and the slide groove 8 is connected with the receiving chamber 7. The end of the slide plate 52 close to the first rotating shaft 6 is located in the receiving chamber 7, and the eccentric roller 51 is eccentrically fixedly installed on the first rotating shaft 6 and located in the receiving chamber 7. A push plate 29 is fixedly installed on the end of the slide plate 52 located in the receiving chamber 7, and a plurality of first elastic members 54 are respectively installed on the eight slide plates 52 and located in the receiving chamber 7. One end of the first elastic member 54 abuts against the inner wall of the glue coating roller 12, and the other end abuts against the push plate 29. A plurality of rollers 30 are rotatably installed on the end of each slide plate 52 close to the first rotating shaft 6. In the present application, the first elastic member 54 can be selected as a spring, and the first elastic member 54 pushes the slide plate 52 to move toward the first rotating shaft 6 through the push plate 29, and the slide plate 52 drives the roller 30 to abut against the outer surface of the eccentric roller 51.

[0053] The eccentric side of the eccentric roller 51 is located on the side of the first rotating shaft 6 away from the junction of the glue coating roller 12 and the pressure roller 13, the outer surface of the eccentric side of the eccentric wheel is the second arc surface 31, the side of the eccentric roller 51 away from the eccentric side is located on the side of the first rotating shaft 6 close to the junction of the glue coating roller 12 and the pressure roller 13, the outer surface of the side of the eccentric wheel away from the eccentric side is the first arc surface 25, and the arc centers of the first arc surface 25 and the second arc surface 31 are both located on the axis of the first rotating shaft 6.

[0054] When the slide plate 52 moves from the first curved surface 25 toward the second curved surface 31, the slide plate 52 gradually slides out of the glue coating roller 12, and the slide plate 52 moves into the glue pool 11; when the slide plate 52 moves onto the second curved surface 31, the slide plate 52 slides out of the glue coating roller 12, and the slide plate 52 is located in the glue pool 11; when the slide plate 52 moves from the second curved surface 31 toward the first curved surface 25, the slide plate 52 gradually slides into the glue coating roller 12, and the slide plate 52 moves out of the glue pool 11, and the glue liquid is collected in the collecting tank 10, and during the sliding process of the slide plate 52, the glue liquid in the collecting tank 10 is continuously squeezed out of the collecting tank 10 and poured on the glue coating roller 12; when the slide plate 52 moves onto the first curved surface 25, the slide plate 52 moves into the glue coating roller 12, the first glue taking plate 53 moves into the first containing tank 15, and part of the glue liquid in the collecting tank 10 is squeezed into the glue storage area 24.

[0055] During the rotation of the glue coating roller 12, the glue taking component 5 takes the glue in the glue pool 11 and sprinkles the glue on the surface of the glue coating roller 12. The mesh of the glue coating roller 12 then adsorbs the glue, so that the change in the fluidity of the glue will not affect the adsorption of the glue, thereby making the glue more evenly coated on the PVC substrate.

[0056] Reference Figure 7 , Figure 8 and Fig. 9A second receiving groove 17 is provided on the slide plate 52 along the axis direction of the glue coating roller 12. The slide plate 52 is located in the second receiving groove 17 and the second glue plate 16 is rotatably installed. Both ends of the rotating shaft of the second glue plate 16 are installed with elastic reset members 18. In the present application, the elastic reset member 18 can be a torsion spring. One end of the elastic reset member 18 is fixedly connected to the slide plate 52, and the other end is fixedly connected to the second glue plate 16. When the slide plate 52 slides out of the glue coating roller 12, the elastic reset member 18 drives the second glue plate 16 to rotate to a state perpendicular to the slide plate 52. When the slide plate 52 slides into the glue coating roller 12, the second glue plate 16 rotates into the second receiving groove 17.

[0057] The slide plate 52 is provided with a plurality of first glue holes 19 connected to the second receiving groove 17. When the slide plate 52 moves out of the glue pool 11, the second glue taking plate 16 is perpendicular to the slide plate 52. During the process of the slide plate 52 gradually moving into the glue coating roller 12, the second glue taking plate 16 gradually rotates and closes into the second receiving groove 17. At this time, the second glue taking plate 16 squeezes the glue in the receiving groove 10 out of the receiving groove 10 through the first glue holes 19, and the squeezed glue flows onto the glue coating roller 12, thereby making the distribution of the glue on the glue coating roller 12 more uniform.

[0058] Reference Fig. 9 An adjustment assembly 20 is installed in each slide plate 52, and the adjustment assembly 20 includes an adjustment plate 201, a drive plate 202 and a plurality of second elastic members 203. The adjustment plate 201 is slidably installed in the slide plate 52 along the diameter direction of the glue coating roller 12, and a plurality of second elastic members 203 are installed in the slide plate 52 and are located on the side of the adjustment plate 201 away from the eccentric roller 51. In the present application, the second elastic member 203 can be selected as a spring, and the second elastic member 203 pushes the adjustment plate 201 to move in the slide plate 52 toward the eccentric roller 51.

[0059] The driving plate 202 is slidably installed in the slide plate 52 along the sliding direction of the vertical adjustment plate 201. The driving plate 202 is located on the side of the adjustment plate 201 away from the second elastic member 203. One end of the driving plate 202 passes through the slide plate 52, and the passing end of the driving plate 202 is located at the rear side of the rotation direction of the slide plate 52. A driving inclined groove 22 connected to the slide groove 8 is provided in the glue coating roller 12. The driving inclined groove 22 is located at the rear side of the rotation direction of the slide plate 52, and the passing end of the driving plate 202 is located in the driving inclined groove 22. The driving inclined groove 22 is provided along the diameter direction of the glue coating roller 12, and the width of the driving inclined groove 22 gradually decreases from the eccentric roller 51 to the glue coating roller 12.

[0060] The adjusting plate 201 is provided with a plurality of adjusting holes 21. When the slide plate 52 moves into the glue coating roller 12, the driving plate 202 is located at the end where the width of the driving chute 22 is the largest. The second elastic member 203 pushes the adjusting plate 201 to move to the side close to the eccentric roller 51. At this time, the adjusting holes 21 on the adjusting plate 201 are staggered with the first row of glue holes 19 of the slide plate 52, and the adjusting plate 201 blocks the first row of glue holes 19. When the slide plate 52 moves out of the glue coating roller 12, the slide plate 52 drives the driving plate 202 to move in the driving chute 22 toward the side with a smaller width of the driving chute 22. The driving inclined slot 22 pushes the driving plate 202 to move into the slide plate 52. The contact ends of the driving plate 202 and the adjusting plate 201 are both wedge-shaped surfaces. Under the action of the wedge-shaped surfaces, the driving plate 202 pushes the adjusting plate 201 to move away from the eccentric roller 51. The adjusting plate 201 drives the adjusting hole 21 to move, so that the overlapping area between the adjusting hole 21 and the first glue discharge hole 19 gradually increases, thereby continuously increasing the aperture of the first glue discharge hole 19 that can discharge glue, so that the glue discharge amount gradually increases, so as to facilitate the glue liquid in the receiving tank 10 to be squeezed out through the first glue discharge hole 19 and flow to the glue coating roller 12.

[0061] The glue coating roller 12 is located at the open end of the slide groove 8 and is formed with a rounded corner 23 on one side close to the second glue taking plate 16. When the slide plate 52 drives the second glue taking plate 16 to move into the glue coating roller 12, the second glue taking plate 16 abuts against the rounded corner 23 of the glue coating roller 12, and the rounded corner 23 gradually pushes the second glue taking plate 16 to rotate and close, so that the second glue taking plate 16 rotates and closes at a uniform speed, making it easier for the second glue taking plate 16 to squeeze the glue liquid out of the first glue discharge hole 19.

[0062] Reference Figure 6 The first glue taking plate 53 is provided with a plurality of second glue holes 34 at equal intervals along its length direction. When the first glue taking plate 53 enters the first receiving groove 15 , the first glue taking plate 53 squeezes the glue in the first receiving groove 15 out of the second glue holes 34 .

[0063] The implementation principle of the processing technology of a PVC-PVDC composite film in the embodiment of the present application is as follows: the glue coating roller 12 drives the multiple slide plates 52 to move. When the slide plates 52 move from the first curved surface 25 to the second curved surface 31, the slide plates 52 gradually slide out of the glue coating roller 12. At this time, the slide plates 52 move into the glue pool 11; when the slide plates 52 move onto the second curved surface 31, the slide plates 52 slide out of the glue coating roller 12. At this time, the slide plates 52 are located in the glue pool 11; when the slide plates 52 move from the second curved surface 31 to the first curved surface When the slide plate 52 moves in the direction of the first curved surface 25, the slide plate 52 gradually slides into the glue roller 12. At this time, the slide plate 52 moves out of the glue pool 11, and the glue liquid is collected in the collection tank 10. During the sliding process of the slide plate 52, the glue liquid in the collection tank 10 is continuously squeezed out of the collection tank 10 and poured on the glue roller 12. When the slide plate 52 moves to the first curved surface 25, the slide plate 52 moves into the glue roller 12, and the first glue taking plate 53 moves into the first containing tank 15. Part of the glue liquid in the collection tank 10 is squeezed into the glue storage area 24. During the rotation of the glue roller 12, the glue taking component 5 takes the glue liquid in the glue pool 11 and pours the glue liquid on the surface of the glue roller 12. The mesh of the glue roller 12 then absorbs the glue liquid, so that the change in the fluidity of the glue liquid will not affect the adsorption of the glue liquid, so that the glue liquid is coated more evenly on the PVC substrate.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A processing technology for PVC-PVDC composite film, Features: The following steps are involved: S1: Gluing: The PVC substrate is coated with glue by a glue coating mechanism (1); S2: Drying: The PVC substrate after being coated with glue enters the drying tunnel (2) for drying; S3: Lamination: The dried PVC substrate and the PVDC substrate are laminated by a lamination mechanism (3); S4: Rewinding: The rewinding mechanism (4) rewinds the laminated PVC-PVDC composite film; In step S1, the glue coating mechanism (1) comprises a glue pool (11), a glue coating roller (12), a pressure roller (13) and a driving member (14); the glue coating roller (12) and the pressure roller (13) are both rotatably arranged on the glue pool (11); the bottom of the pressure roller (13) abuts against the top of the glue coating roller (12); the driving member (14) is arranged on the glue pool (11) and is used to drive the glue coating roller (12) and the pressure roller (13) to rotate; the PVC substrate passes through the glue coating roller (12) and the pressure roller (13) The glue coating roller (12) is provided with a glue taking component (5) between the pressure rollers (13). During the rotation of the glue coating roller (12), the glue taking component (5) takes glue liquid and sprinkles it on the glue coating roller (12); the glue taking component (5) comprises an eccentric roller (51), a plurality of slide plates (52), a first glue taking plate (53) and a first elastic member (54). A first rotating shaft (6) is fixedly provided in the glue pool (11). The glue coating roller (12) is coaxially rotatable and arranged on the first rotating shaft (6). On the rotating shaft (6), a receiving cavity (7) is formed inside the glue coating roller (12); the eccentric roller (51) is eccentrically fixedly arranged on the first rotating shaft (6) and located in the receiving cavity (7); the eccentric side of the eccentric roller (51) is located on the side of the first rotating shaft (6) away from the PVC substrate; the glue coating roller (12) is provided with a plurality of slide grooves (8) connected to the receiving cavity (7) at intervals along its own circumference; the plurality of slide plates (52) are all slidably arranged in the plurality of slide grooves (8) along the diameter direction of the glue coating roller (12); the plurality of first elastic members (54) are arranged in the receiving cavity (7) of the glue coating roller (12) and are used to push the plurality of slide plates (52) to move and abut against the eccentric roller (51); the plurality of first glue taking plates (53) are fixedly arranged at the ends of the plurality of slide plates (52) away from the eccentric roller (51); and the outer wall of the glue coating roller (12) is provided with a plurality of first receiving grooves (15) for accommodating the first glue taking plates (53).

2. A processing technology for a PVC-PVDC composite film according to claim 1, Features: Baffles (9) are fixedly installed at both ends of the slide plate (52) along the axis direction of the glue coating roller (12), and the baffles (9) are slidably arranged in the glue coating roller (12). The ends of the two baffles (9) are fixedly connected to the two ends of the first glue taking plate (53), and a receiving groove (10) is formed between the slide plate (52), the first glue taking plate (53) and the two baffles (9).

3. A processing technology for a PVC-PVDC composite film according to claim 2, Features: A plurality of second glue-collecting plates (16) are arranged on the slide plate (52) to rotate at intervals along the diameter direction of the glue-coating roller (12); a plurality of elastic reset members (18) are arranged inside the slide plate (52); the elastic reset members (18) drive the second glue-collecting plates (16) to rotate to a state perpendicular to the slide plate (52); a plurality of second accommodating grooves (17) for accommodating the second glue-collecting plates (16) are arranged on the slide plate (52); a plurality of first glue-discharging holes (19) communicating with the second accommodating grooves (17) are opened inside the slide plate (52).

4. A processing technology for a PVC-PVDC composite film according to claim 3, Features: The slide plate (52) is provided with an adjusting component (20) for adjusting the aperture of the first glue discharge hole (19); when the slide plate (52) slides out of the slide groove (8), the adjusting component (20) gradually increases the aperture of the first glue discharge hole (19); when the slide plate (52) slides into the slide groove (8), the adjusting component (20) gradually reduces the aperture of the first glue discharge hole (19).

5. A processing technology for a PVC-PVDC composite film according to claim 4, Features: The adjustment assembly (20) comprises an adjustment plate (201), a drive plate (202) and a second elastic member (203); the adjustment plate (201) is slidably arranged in the slide plate (52) along the diameter direction of the glue coating roller (12); the second elastic member (203) is arranged in the slide plate (52); the second elastic member (203) abuts against the end of the adjustment plate (201) and is used to push the adjustment plate (201) to move in a direction close to the eccentric roller (51); a plurality of adjustment holes (21) are arranged on the adjustment plate (201) at intervals; the plurality of adjustment holes (21) correspond to a plurality of first glue discharge holes (19); the drive plate (202) is slidably arranged in the slide plate (52) along the moving direction perpendicular to the adjustment plate (201); one end of the drive plate (202) extends into the slide plate (52) and is located far from the adjustment plate (201). On the side away from the second elastic member (203), the contact surfaces of the driving plate (202) and the adjusting plate (201) are both wedge-shaped surfaces and fit each other. A driving inclined groove (22) connected to the slide groove (8) is provided on the side of the glue coating roller (12) close to the driving plate (202). The width of the driving inclined groove (22) gradually decreases from the eccentric roller (51) to the glue coating roller (12). The other end of the driving plate (202) extends into the glue coating roller (12) and abuts against the inner wall of the driving inclined groove (22). When the slide plate (52) slides out of the slide groove (8), the slide plate (52) drives the driving plate (202) to slide in the driving inclined groove (22). The driving inclined groove (22) pushes the driving plate (202) to move. The driving plate (202) pushes the adjusting plate (201) to move through the wedge-shaped surface and gradually increases the aperture of the first glue discharge hole (19).

6. A processing technology for a PVC-PVDC composite film according to claim 3, Features: The glue coating roller (12) is formed with a rounded corner (23) on one side of the opening end of the slide groove (8) close to the second glue removal plate (16).

7. A processing technology for a PVC-PVDC composite film according to claim 2, Features: The pressure roller (13) is located obliquely above the discharge end of the glue coating roller (12), and the pressure roller (13) abuts against the glue coating roller (12). A glue storage area (24) is formed at the abutment point between the pressure roller (13) and the glue coating roller (12) and at a side close to the feed end of the glue coating roller (12).

8. A processing technology for a PVC-PVDC composite film according to claim 2, Features: A first arc surface (25) is formed on one side of the eccentric roller (51) close to the glue storage area (24), and the arc center of the first arc surface (25) is located on the axis of the first rotating shaft (6).

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