A release layer gluing device for cellulose film tape

Abstract

The invention discloses a release layer gluing device for a cellulose film tape, which belongs to the field of tape coating, and includes a gluing cavity, a pressure roller, a gluing pipe, and a scraping roller. A continuous colloid coating cavity along the circumferential direction of the pressure roller is formed between the inner wall of the gluing cavity and the outer wall of the pressure roller. A paper inlet is formed between one side of the gluing cavity and the pressure roller, and a paper outlet is formed between the other side and the pressure roller. The release layer enters the colloid coating cavity from the paper inlet and leaves the colloid coating cavity from the paper outlet. The scraping roller contacts the surface of the release layer coated with glue, and scrapes off excess glue on the surface of the release layer while the release layer is continuously transported. In the invention, the release layer passes through the colloid coating cavity during the transmission process so that glue is attached to the surface of the release layer, and the scraping roller scrapes off excess glue on the surface of the release layer. The scraped glue is left in the colloid coating cavity and reattached to a new release layer paper segment. Excess glue will not overflow during the gluing process and the scraping process, thereby improving the utilization rate of the glue.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive tape adhesive coating, and in particular to a release layer adhesive coating device for a cellulose film adhesive tape. Background Art

[0002] The production process of the degradable cellulose film tape is as follows: placing cellulose ionic liquid on a glass plate, coating it with a coating machine to obtain a cellulose film layer; coating the surface of the release layer with an adhesive through a coating mechanism to form an adhesive layer; making the side of the release layer provided with the adhesive layer cover the side of the cellulose film layer to be glued and laminating them through a laminating mechanism, and then coating the laminated composite tape with a water-based adhesive to finally make the degradable cellulose film tape.

[0003] The release layer is usually coated with adhesive using a glue coating machine. After the release layer is coated with adhesive, a scraper or scraper roller is required to scrape off excess adhesive to ensure that the thickness of the coated adhesive is consistent.

[0004] In the coating machine in the prior art, a large amount of adhesive is coated on the release paper, and most of the adhesive is intercepted by a scraper or a scraper roller, leaving only a thin adhesive layer on the release paper. However, the amount of adhesive loaded cannot be controlled. If the amount of adhesive loaded is small, it is easy for the edge of the release paper to not be attached with adhesive, resulting in the inability to form an adhesive layer. Due to the fluidity of the adhesive, if the amount of adhesive loaded is large, it will be intercepted by the scraper or the scraper roller and accumulated in front of the scraper or the scraper roller. Excessive accumulation will cause the adhesive to overflow from the edge of the release layer and splash everywhere.

[0005] Therefore, in the prior art, the amount of adhesive applied during the gluing process cannot be accurately controlled, which can easily lead to problems such as uneven adhesive application or excessive overflow of the adhesive. Summary of the invention

[0006] To this end, the present invention provides a release layer gluing device for a cellulose film tape, which effectively solves the technical problems in the prior art that the amount of adhesive applied cannot be controlled, resulting in the inability to form an adhesive layer or excessive accumulation causes the adhesive to overflow from the edge of the release layer.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a release layer gluing device for a cellulose film tape, comprising:

[0008] A glue coating cavity, wherein the interior of the glue coating cavity is hollow, a pressing roller is installed in the glue coating cavity, and a glue coating cavity continuous along the circumferential direction of the pressing roller is formed between the inner wall of the glue coating cavity and the outer wall of the pressing roller;

[0009] A paper inlet is formed between one side of the glue coating cavity and the pressure roller, and a paper outlet is formed between the other side and the pressure roller. The release layer enters the colloid coating cavity from the paper inlet and leaves the colloid coating cavity from the paper outlet. The part of the release layer located in the colloid coating cavity adheres to the surface of the pressure roller, and the release layer is driven to be transported backward under the rotation of the pressure roller.

[0010] A glue inlet pipe, arranged on the glue coating cavity, for injecting glue into the glue coating cavity;

[0011] A scraping roller is arranged at the paper outlet and contacts the surface of the release layer coated with the adhesive. When the release layer is continuously conveyed, the scraping roller scrapes off the excess adhesive on the surface of the release layer.

[0012] Furthermore, mounting plates are provided at both ends of the glue coating cavity, the end of the pressure roller is in close contact with the mounting plates, the side of the release layer in the colloid coating cavity is in contact with the mounting plates, and the width of the release layer is consistent with the length of the colloid coating cavity;

[0013] The height of the rubber material in the colloid coating cavity is higher than the bottom height position of the pressing roller.

[0014] Furthermore, a first gluing hole is provided at the bottom of the gluing cavity, and the first gluing hole is connected to the inside of the gluing cavity;

[0015] The bottom inner wall of the gluing cavity is provided with an arc-shaped inner cavity, an arc-shaped gluing plate is slidably arranged in the arc-shaped inner cavity, a second gluing hole is arranged on the gluing plate, and support blocks are arranged at both ends of the gluing plate, and the support blocks are tightly against the inner wall of the arc-shaped inner cavity;

[0016] Wherein, the length of the upper glue plate is consistent with the length of the arc-shaped inner cavity;

[0017] When no glue is applied, the first glue hole and the second glue hole are staggered. When glue is applied, the glue plate can move along the arc-shaped inner cavity until the relative positions of the first glue hole and the second glue hole overlap.

[0018] Further, the support block is externally connected to a connecting bent rod, the outer end of the connecting bent rod is connected to a slide, the outer side of the slide is connected to a connecting block, the connecting block is externally connected to a connecting rod, the outer end of the connecting rod is connected to a rotating disk, and the connecting rod is arranged along the length direction of the glue-applying cavity;

[0019] The outer wall of the upper glue cavity is provided with a slide groove, the slide groove is communicated with the arc-shaped inner cavity, and the slide rack is slidably installed in the slide groove.

[0020] Furthermore, a limiting groove seat is fixedly installed at the end of the glue-applying cavity, and the rotating disk is movably installed in the limiting groove seat;

[0021] The rotating disk is provided with meshing teeth in the circumferential direction, and the side of the rotating disk is provided with a driving gear meshing with the meshing teeth, the driving gear is connected to the first driving motor, and the driving end of the first driving motor is connected to the center position of the driving gear to drive the driving gear to rotate;

[0022] The rotating disk is driven to rotate by the driving gear, and drives the upper glue plate to move inside the arc-shaped inner cavity through the connecting rod, the connecting block, the slide, and the connecting bent rod.

[0023] Furthermore, a locking shaft is installed at the shaft end of the pressing roller, and the locking shaft brakes the rotation of the pressing roller when the glue inlet pipe injects glue into the glue coating cavity to suspend the gluing process of the release layer.

[0024] Further, the locking shaft comprises a brake shaft connected to the end of the pressure roller and a brake disc connected to the outer end of the brake shaft;

[0025] The brake disc is provided with a plurality of brake grooves, the rotating disc is externally connected with a connecting tube, the connecting tube is externally connected with a connecting ring, and the outer peripheral side of the connecting ring is connected with a plurality of protrusions;

[0026] The inner side of the limiting groove seat is connected to a mounting ring seat, and a plurality of connecting arc seats are connected inside the mounting ring seat. A bearing seat is installed between the connecting arc seats, and a brake hook is rotatably installed on the bearing seat. The bottom of the brake hook is supported on the outer peripheral side of the connecting ring, and the top of the brake hook faces the brake groove;

[0027] When the rotating disk rotates, the protrusion is driven by the connecting tube and the connecting ring to rotate to the bottom of the brake hook and support the bottom of the brake hook outwardly. The brake hook rotates around the bearing seat under the support of the bottom, so that the hook head of the brake hook rotates toward one side of the brake disk and is buckled into the brake groove;

[0028] The brake shaft passes through the mounting plate, the rotating disk, the connecting tube and the connecting ring in sequence, and the outer diameter of the brake shaft is smaller than the inner diameters of the connecting tube and the connecting ring.

[0029] Furthermore, a support seat is installed at the bottom of the upper glue cavity, and the upper glue cavity is fixedly installed on the support seat;

[0030] The end of the pressure roller away from the brake shaft is connected to a driving shaft, the end of the driving shaft is connected to a second driving motor, and the driving end of the second driving motor is connected to the driving shaft and drives the pressure roller to rotate through the driving shaft.

[0031] Furthermore, a lead roller is provided at the upstream end of the pressing roller, and the lead roller transfers the release layer to the pressing roller in a state away from the cavity wall of the glue-applying cavity.

[0032] Furthermore, a release layer unwinding mechanism is provided at the upstream end of the lead roller;

[0033] The release layer unwinding mechanism comprises a feeding roller and a plurality of conveying rollers;

[0034] The release layer is drawn out from the feeding roller, transmitted to the pressing roller through a plurality of the conveying rollers and the lead roller, and shuttles in the colloid coating cavity.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] In the present invention, a pressing roller and a gluing cavity are used to form an open colloid coating cavity. The release layer passes through the colloid coating cavity during the transmission process so that the surface of the release layer is attached with glue. The scraping roller scrapes off the excess glue on the surface of the release layer at the paper outlet. The scraped glue is left in the colloid coating cavity and reattached to a new release layer paper segment. The excess glue in the gluing process and the scraping process will be left in the colloid coating cavity and will not overflow, thereby improving the utilization rate of the glue.

[0037] Furthermore, when the release layer passes through the colloid coating cavity, it can ensure that the adhesive is fully attached to the lower paper surface of the release layer, thereby avoiding uneven distribution of the adhesive and ensuring uniformity of gluing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0039] Figure 1 A schematic structural diagram of a release layer gluing device for a cellulose film tape provided in an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the structure of the release layer transportation in an embodiment of the present invention;

[0041] Figure 3 for Figure 2 A schematic diagram of a top view structure;

[0042] Figure 4 for Figure 3 Sectional view along AA direction;

[0043] Figure 5 This is a schematic diagram of the structure of introducing the release layer into the colloid coating cavity in an embodiment of the present invention;

[0044] Figure 6 It is a structural schematic diagram of a glue-applying cavity and a pressure roller in an embodiment of the present invention;

[0045] Figure 7 for Figure 6 Left view of;

[0046] Figure 8 for Figure 7 Stereoscopic cross-sectional view in the middle BB direction;

[0047] Fig. 9 for Figure 6 An enlarged structural diagram of the middle locking shaft;

[0048] Fig.10 for Fig. 9 A structural diagram from another perspective;

[0049] Fig.11 for Figure 6 A top view of

[0050] Fig.12 for Fig.11 Schematic diagram of the structure in the CC direction;

[0051] Fig.13 Schematic diagram of the structure of the release layer unwinding mechanism in an embodiment of the present invention.

[0052] The numbers in the figure represent the following:

[0053] 1-release layer unwinding mechanism; 2-pressing roller; 3-gluing cavity; 4-scraping roller; 5-locking shaft; 6-release layer; 7-colloid coating cavity; 8-glue inlet pipe; 9-first gluing hole; 10-arc inner cavity; 11-gluing plate; 12-second gluing hole; 13-support block; 14-connecting curved rod; 15-slide; 16-connecting block; 17-connecting rod; 18-slide; 19-rotating disk; 20-limiting slot seat; 21-driving gear; 22-first driving motor; 23-mounting plate; 24-support seat; 25-driving shaft; 26-second driving motor; 27-leading roller; 28-composite roller; 29-discharging roller; 30-cellulose film layer; 31-paper inlet; 32-paper outlet;

[0054] 51-brake shaft; 52-brake disc; 53-brake groove; 54-connecting ring; 55-protrusion; 56-mounting ring seat; 57-connecting arc seat; 58-bearing seat; 59-brake hook; 510-connecting cylinder;

[0055] 101 - feeding roller; 102 - conveying roller. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention provides a release layer gluing device for a cellulose film tape, comprising a gluing cavity 3, a pressure roller 2, a gluing pipe 8, a scraper roller 4 and other structures.

[0058] The glue-applying cavity 3 is hollow inside, and a pressing roller 2 is installed in the glue-applying cavity 3 . A glue-applying cavity 7 continuous along the circumferential direction of the pressing roller 2 is formed between the inner wall of the glue-applying cavity 3 and the outer wall of the pressing roller 2 , and the glue-applying cavity 7 is filled with glue.

[0059] A paper inlet 31 is formed between one side of the upper glue cavity 3 and the pressure roller 2, and a paper outlet 32 ​​is formed between the other side and the pressure roller 2. The release layer 6 enters the colloid coating cavity 7 from the paper inlet 31 and leaves the colloid coating cavity 7 from the paper outlet 32. The part of the release layer 6 located in the colloid coating cavity 7 is in contact with the surface of the pressure roller 2, and the release layer 6 is transported backward when the pressure roller 2 rotates.

[0060] In the process of the release layer 6 shuttling through the colloid coating cavity 7, the release layer 6 will be immersed in the rubber material, so that the rubber material adheres to the surface of the rubber material, and under the action of gravity, most of the rubber material will flow back into the colloid coating cavity 7 and will not be transported backward with the release layer 6, thus initially forming a relatively uniform rubber surface on the surface of the release layer 6.

[0061] The glue inlet pipe 8 is arranged at the bottom of the upper glue cavity 3, and is used to inject glue into the glue coating cavity 7. The injection process of the glue is determined according to the amount of glue in the glue coating cavity 7. If the surface of the glue in the glue coating cavity 7 is about to be lower than the height position of the pressure roller 2, it is necessary to immediately replenish the material into the upper glue cavity 3 through the glue inlet pipe 8.

[0062] The scraper roller 4 is arranged at the paper outlet 32, and the scraper roller 4 contacts the surface of the release layer 6 coated with the glue. When the release layer 6 is continuously conveyed, the excess glue on the surface of the release layer 6 is scraped off. After the excess glue on the surface of the release layer 6 is scraped off, the surface of the release layer 6 is dried to obtain an adhesive layer on the surface of the release layer 6.

[0063] The scraper roller 4 is usually in a fixed state, and scrapes off the adhesive on the surface of the release layer 6 that exceeds the adhesive thickness. The scraper roller 4 can also be set to be detachably installed in the adhesive cavity 3, and the scraper roller 4 is removed at a certain period and the adhesive on the surface of the scraper roller 4 is cleaned.

[0064] In the present invention, a pressure roller 2 and a gluing cavity 3 are used to form an open colloid coating cavity 7. The release layer 6 passes through the colloid coating cavity 7 during the transmission process so that the surface of the release layer 6 is attached with glue. The scraper roller scrapes off the excess glue on the surface of the release layer 6 at the paper outlet 32. The scraped glue is left in the colloid coating cavity 7 and reattached to the new release layer 6 paper segment. The excess glue in the gluing process and the scraping process will be left in the colloid coating cavity 7 and will not overflow, thereby improving the utilization rate of the glue.

[0065] Furthermore, when the release layer passes through the colloid coating cavity 7, the adhesive can be fully attached to the lower paper surface of the release layer 6, thereby avoiding uneven distribution of the adhesive and ensuring uniformity of the gluing.

[0066] As the release layer 6 is being transferred into the colloid coating cavity 7, the adhesive will adhere to the side of the release layer 6. A design that limits the edge of the release layer 6 is adopted to prevent the adhesive from overflowing from the edge of the release layer 6 and even overflowing to the other side of the release layer 6. Specifically, mounting plates 23 are provided at both ends of the upper glue cavity 3, the end of the pressure roller 2 is in close contact with the mounting plate 23, the side of the portion of the release layer 6 in the colloid coating cavity 7 is in contact with the mounting plate 23, the width of the release layer 6 is consistent with the length of the colloid coating cavity 7, and the release layer 6 in the colloid coating cavity 7 is in close contact with the pressure roller 2. Therefore, the adhesive generally does not overflow to the close contact surface.

[0067] In addition, the height of the adhesive in the colloid coating cavity 7 should be lower than the bonding starting point and bonding end point of the release layer 6 on the pressure roller 2. In the area above the bonding starting point and bonding end point, the release layer 6 does not bond with the pressure roller 2. If the height of the adhesive is higher than the bonding starting point and bonding end point of the release layer 6 on the pressure roller 2, the adhesive will pass through the edge of the release layer 6 and penetrate into the side of the release layer 6 close to the pressure roller 2. In addition, it is also necessary to set: the height of the adhesive in the colloid coating cavity 7 is higher than the bottom height position of the pressure roller 2, so that the bottom of the pressure roller 2 will inevitably be immersed in the adhesive, and the surface of the release layer 6 will follow and be immersed in the adhesive, and the adhesive will adhere to the surface of the release layer 6 in the process of passing through the adhesive.

[0068] In practical applications, when the glue is insufficient (the height of the glue in the colloid coating cavity 7 is about to be lower than the bottom height position of the pressure roller 2), it is necessary to inject glue into the colloid coating cavity 7. It is also necessary to pay attention to controlling the injection amount during the process of injecting glue to ensure that the height of the glue in the colloid coating cavity 7 is lower than the bonding starting point and bonding end point of the release layer 6 on the pressure roller 2.

[0069] Since the glue is injected into the upper glue cavity 3 under certain circumstances, the communication state between the upper glue cavity 3 and the glue inlet pipe 8 is opened when the glue needs to be injected into the upper glue cavity 3. Specifically, Figure 6 , Figure 7 and Figure 8 As shown, a first glue hole 9 is opened at the bottom of the glue cavity 3, and the first glue hole 9 is connected to the inside of the glue coating cavity 7;

[0070] An arc-shaped inner cavity 10 is provided on the inner wall of the bottom of the gluing cavity 3, and an arc-shaped gluing plate 11 is slidably provided in the arc-shaped inner cavity 10. A second gluing hole 12 is provided on the gluing plate 11. Support blocks 13 are provided at both ends of the gluing plate 11, and the support blocks 13 are tightly against the inner wall of the arc-shaped inner cavity 10. The length of the gluing plate 11 is consistent with the length of the arc-shaped inner cavity 10.

[0071] When no glue is applied, the first glue hole 9 and the second glue hole 12 are staggered. When glue is applied, the glue plate 11 can move along the arc-shaped inner cavity 10 until the first glue hole 9 and the second glue hole 12 overlap relative to each other.

[0072] The gluing plate 11 can move in the arc-shaped inner cavity 10. When the first gluing hole 9 and the second gluing hole 12 are staggered, the bottom of the colloid coating cavity 7 is closed. When the first gluing hole 9 and the second gluing hole 12 coincide with each other, the bottom of the colloid coating cavity 7 is opened, and glue can be injected into the colloid coating cavity 7 through the glue inlet pipe 8, the second gluing hole 12, and the first gluing hole 9.

[0073] Therefore, the glue injection process can be controlled by adjusting the position of the glue plate 11 in the arc-shaped inner cavity 10 .

[0074] In order to adjust the position of the glue plate 11 in the arc-shaped inner cavity 10, the present invention makes the following design, such as Figure 6 , Figure 7 As shown, the support block 13 is connected to a connecting bent rod 14 on the outside, and the outer end of the connecting bent rod 14 is connected to a slide 15. The outer side of the slide 15 is connected to a connecting block 16, and the connecting block 16 is connected to a connecting rod 17 on the outside. The outer end of the connecting rod 17 is connected to a rotating disk 19, and the connecting rod 17 is arranged along the length direction of the upper glue cavity 3. The outer wall of the upper glue cavity 3 is provided with a slide groove 18, which is connected to the arc-shaped inner cavity 10, and the slide 15 is slidably installed in the slide groove 18.

[0075] A limited slot seat 20 is fixedly installed at the end of the glue-applying cavity 3, and a rotating disk 19 is movably installed in the limited slot seat 20. The rotating disk 19 is provided with meshing teeth in the circumferential direction, and a driving gear 21 meshing with the meshing teeth is provided on the side of the rotating disk 19. The driving gear 21 is connected to a first driving motor 22, and the driving end of the first driving motor 22 is connected to the center position of the driving gear 21 to drive the driving gear 21 to rotate;

[0076] The rotating disk 19 is driven to rotate by the driving gear 21 , and drives the upper glue plate 11 to move inside the arc-shaped inner cavity 10 through the connecting rod 17 , the connecting block 16 , the slide 15 , and the connecting curved rod 14 .

[0077] The first driving motor 22 drives the driving gear 21 to rotate, thereby driving the rotating disk 19 to rotate, the rotating disk 19 drives the connecting rod 17 to rotate, drives the connecting block 16 to rotate, drives the slide 15 to rotate, drives the connecting curved rod 14 to move, thereby drives the supporting block 13 to move along the arc-shaped inner cavity 10, drives the gluing plate 11 to move in the arc-shaped inner cavity 10, and only a small angle of movement can adjust the connection state between the first gluing hole 9 and the second gluing hole 12.

[0078] Since continuing the gluing work when there is insufficient glue in the colloid coating chamber 7 may result in insufficient glue adhesion on the surface of the release layer 6, thereby failing to form a uniform adhesive layer, the locking shaft 5 is used to lock the pressure roller 2 during the glue feeding process in the colloid coating chamber 7 to stop the release layer 6 from being transported backwards, thereby ensuring that the colloid coating chamber 7 is filled with a sufficient amount of glue before the feeding work is performed. Specifically, the locking shaft 5 includes a brake shaft 51 connected to the end of the pressure roller 2, a brake disc 52 connected to the outer end of the brake shaft 51, a plurality of brake grooves 53 are provided on the brake disc 52, a connecting cylinder 510 is connected to the outside of the rotating disk 19, a connecting ring 54 is connected to the outside of the connecting cylinder 510, and a plurality of protrusions 55 are connected to the outer peripheral side of the connecting ring 54;

[0079] The inner side of the limiting groove seat 20 is connected with a mounting ring seat 56, and a plurality of connecting arc seats 57 are connected inside the mounting ring seat 56. A bearing seat 58 is installed between the connecting arc seats 57. A brake hook 59 is rotatably installed on the bearing seat 58. The bottom of the brake hook 59 is supported on the outer peripheral side of the connecting ring 54, and the top of the brake hook 59 is facing the brake groove 53.

[0080] When the rotating disk 19 rotates, the protrusion 55 is driven by the connecting tube 510 and the connecting ring 54 to rotate to the bottom of the braking hook 59 and support the bottom of the braking hook 59 outwardly. Under the support of the bottom, the braking hook 59 rotates around the bearing seat 58, so that the hook head of the braking hook 59 rotates downward (rotates toward the side of the brake disk 52) and is buckled in the braking groove 53.

[0081] The brake shaft 51 passes through the mounting plate 23 , the rotating disk 19 , the connecting tube 510 , and the connecting ring 54 in sequence, and the outer diameter of the brake shaft 51 is smaller than the inner diameters of the connecting tube 510 and the connecting ring 54 .

[0082] In the above embodiments, the rotating disk 19 can drive the connecting tube 510 and the connecting ring 54 to rotate together, and drive the protrusion 55 to rotate together during the rotation process.

[0083] In the initial state, the bottom of the brake hook 59 is supported on the outer peripheral side of the connecting ring 54. During the rotation of the connecting ring 54, the protrusion 55 gradually supports the brake hook 59 outward, so that the bottom of the brake hook 59 is gradually supported on the outside of the protrusion 55, thereby driving the bottom of the brake hook 59 to rotate outward and the top of the brake hook 59 to rotate inward. During the inward rotation, the hook head of the brake hook 59 is gradually engaged in the brake groove 53.

[0084] At this time, the continued rotation of the pressure roller 2 will inevitably drive the brake shaft 51 and the brake disc 52 to rotate, and drive the brake groove 53 to rotate. When the groove wall of the brake groove 53 moves to the hook head of the brake hook 59, it can no longer rotate, thereby braking the pressure roller 2.

[0085] In the initial state, the hook head of the brake hook 59 is away from the brake groove 53. At this time, the brake shaft 51 and the brake disc 52 can rotate freely, and the pressure roller 2 can rotate freely and drive the release layer 6 to be continuously transported backward, driving the release layer 6 to be continuously transported and shuttle through the colloid coating cavity 7. After the above braking action, that is, when the glue is injected into the colloid coating cavity 7, after a short period of time, the groove wall of the brake groove 53 moves to the hook head of the brake hook 59, the brake disc 52 is braked, and the pressure roller 2 is braked.

[0086] The present invention also includes other roller structures. When the glue is injected into the colloid coating cavity 7, the rotation of other roller structures can be stopped synchronously. Due to the inertia of the roller structure, the above braking action can effectively prevent the pressure roller 2 and other roller structures from driving the release layer 6 to continue to be transported forward.

[0087] In actual application, the pressure roller 2 may not be braked, but the rubber material in the colloid coating chamber 7 must be replenished before it drops to the lowest position of the pressure roller 2, and the height of the rubber material in the colloid coating chamber 7 must be ensured to be always higher than the lowest position of the pressure roller 2. In this case, the release layer 6 can be glued and the rubber material in the colloid coating chamber 7 can be replenished at the same time (the release layer 6 can be glued continuously during the process of injecting the rubber material into the colloid coating chamber 7).

[0088] The upper glue cavity 3 is fixed in position, a support seat 24 is installed at the bottom of the upper glue cavity 3, and the upper glue cavity 3 is fixedly installed on the support seat 24. In the above embodiment, the upper glue cavity 3, the limiting groove seat 20, the mounting ring seat 56, the connecting arc seat 57, and the bearing seat 58 are all fixed structures.

[0089] The pressure roller 2 itself can rotate to drive the transportation of the release layer 6. Specifically, the end of the pressure roller 2 away from the brake shaft 51 is connected to the drive shaft 25, and the end of the drive shaft 25 is connected to the second drive motor 26. The driving end of the second drive motor 26 is connected to the drive shaft 25 and drives the pressure roller 2 to rotate through the drive shaft 25.

[0090] In the present invention, the release layer 6 is introduced onto the pressure roller 2 in a vertical state, which can increase the attachment area of ​​the release layer 6 on the pressure roller 2. If the release layer 6 is introduced onto the pressure roller 2 obliquely downward from the side away from the pressure roller 2, the bonding starting point of the release layer 6 on the pressure roller 2 must be lower than the central axis position of the pressure roller 2, and the adhesive cannot exceed the bonding starting point of the release layer 6 on the pressure roller 2, otherwise the adhesive will adhere to the paper surface of the release layer 6. Therefore, the release layer 6 is introduced onto the pressure roller 2 in a vertical state, which can improve the attachment entrance of the release layer 6 on the pressure roller 2 and reduce the height limit of the adhesive in the colloid coating cavity 7. In addition, the release layer 6 can also be introduced onto the pressure roller 2 obliquely downward from the side close to the pressure roller 2 to further improve the bonding starting point of the release layer 6 on the pressure roller 2, which also has the above effect.

[0091] In order to allow the release layer 6 to be introduced onto the pressure roller 2 in a vertical or inclined state, the present invention makes the following designs: Figure 2 and Fig.13 As shown, a lead roller 27 is arranged above the pressure roller 2. The lead roller 27 transfers the release layer 6 to the pressure roller 2 in a state away from the wall of the glue coating cavity 3. The release layer 6 entering the glue coating cavity 7 from the paper inlet 31 does not contact the inner wall of the glue coating cavity 3.

[0092] In order to realize the compounding with the cellulose film layer 30 after the gluing process, a compounding roller 28 is also arranged at the downstream end of the pressing roller 2. Specifically, two compounding rollers 28 are arranged above the pressing roller 2, and a discharge roller 29 is arranged on the side of the pressing roller 2, and the cellulose film layer 30 is pulled out by the discharge roller 29; the release layer 6 and the cellulose film layer 30 are both transported to the compounding roller 28, and the side of the release layer 6 with the adhesive layer is covered on the side of the cellulose film layer 30 to be glued after passing between the compounding rollers 28.

[0093] A drying structure may be installed on the side of the release layer 6 between the composite roller 28 and the pressure roller 2 to dry the release layer 6 after gluing.

[0094] A release layer unwinding mechanism 1 is provided at the upstream end of the lead roller 27;

[0095] In the present invention, the release layer unwinding mechanism 1 unwinds and transports the release layer 6. The release layer unwinding mechanism 1 includes a loading roller 101 and a plurality of conveying rollers 102. The release layer 6 is drawn out from the loading roller 101, transmitted to the pressure roller 2 through a plurality of conveying rollers 102 and a lead roller 27, and shuttles through the colloid coating cavity 7.

[0096] In summary, the main implementation process of the present invention is:

[0097] The release layer 6 is led out from the feeding roller 101, and is transferred to the pressing roller 2 through a plurality of conveying rollers 102 and a lead roller 27. The release layer 6 enters the colloid coating chamber 7 from the paper inlet 31, and the adhesive in the colloid coating chamber 7 adheres to the surface of the release layer 6. The excess adhesive is scraped off the release layer 6 by the scraper roller 4 at the paper outlet 32, and then dried to form an adhesive layer on the surface of the release layer 6.

[0098] The cellulose film layer 30 is pulled out from the discharge roller 29, and the release layer 6 and the cellulose film layer 30 are both transported to the composite roller 28, and the side of the release layer 6 with the adhesive layer is covered on the side of the cellulose film layer 30 to be glued after passing through the composite rollers 28, so as to realize the composite of the release layer 6 and the cellulose film layer 30.

[0099] In actual application, after the release layer 6 and the cellulose film layer 30 are composited, the composite layer is pulled out by a roller structure and then dried. After drying, water-based glue is coated on the surface of the composite layer to make an adhesive tape.

[0100] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A release layer gluing device for a cellulose film tape, characterized in that: include: A glue coating cavity (3), the interior of the glue coating cavity (3) is hollow, a pressure roller (2) is installed in the glue coating cavity (3), and a glue coating cavity (7) continuous along the circumferential direction of the pressure roller (2) is formed between the inner wall of the glue coating cavity (3) and the outer wall of the pressure roller (2); A paper inlet (31) is formed between one side of the glue coating cavity (3) and the pressure roller (2), and a paper outlet (32) is formed between the other side and the pressure roller (2); the release layer (6) enters the glue coating cavity (7) from the paper inlet (31) and leaves the glue coating cavity (7) from the paper outlet (32); the part of the release layer (6) located in the glue coating cavity (7) is in contact with the surface of the pressure roller (2), and the release layer (6) is driven to be transported backwards as the pressure roller (2) rotates; A glue inlet pipe (8), arranged on the glue application cavity (3), and used for injecting glue into the glue coating cavity (7); a scraping roller (4), the scraping roller (4) being arranged at the paper outlet (32), and the scraping roller (4) being in contact with the surface of the release layer (6) coated with the adhesive, and scraping off excess adhesive on the surface of the release layer (6) while the release layer (6) is being continuously transported; Mounting plates (23) are provided at both ends of the glue coating cavity (3), the end of the pressure roller (2) is in close contact with the mounting plate (23), the side edge of the release layer (6) in the glue coating cavity (7) is in contact with the mounting plate (23), and the width of the release layer (6) is consistent with the length of the glue coating cavity (7); The height of the rubber material in the colloid coating cavity (7) is higher than the bottom height position of the pressing roller (2); A first gluing hole (9) is provided at the bottom of the gluing cavity (3), and the first gluing hole (9) is communicated with the interior of the gluing cavity (7); The bottom inner wall of the gluing cavity (3) is provided with an arc-shaped inner cavity (10), an arc-shaped gluing plate (11) is slidably arranged in the arc-shaped inner cavity (10), a second gluing hole (12) is arranged on the gluing plate (11), and support blocks (13) are arranged at both ends of the gluing plate (11), and the support blocks (13) are tightly abutted against the inner wall of the arc-shaped inner cavity (10); Wherein, the length of the upper glue plate (11) is consistent with the length of the arc-shaped inner cavity (10); When the adhesive is not applied, the first adhesive hole (9) and the second adhesive hole (12) are staggered, and when the adhesive is applied, the adhesive plate (11) can move along the arc-shaped inner cavity (10) until the relative positions of the first adhesive hole (9) and the second adhesive hole (12) overlap; The support block (13) is externally connected to a connecting bent rod (14), the outer end of the connecting bent rod (14) is connected to a slide frame (15), the outer side of the slide frame (15) is connected to a connecting block (16), the connecting block (16) is externally connected to a connecting rod (17), the outer end of the connecting rod (17) is connected to a rotating disk (19), and the connecting rod (17) is arranged along the length direction of the glue-applying cavity (3); The outer wall of the glue-applying cavity (3) is provided with a slide groove (18), the slide groove (18) is communicated with the arc-shaped inner cavity (10), and the slide frame (15) is slidably mounted in the slide groove (18).

2. The release layer gluing device of the cellulose film tape according to claim 1, characterized in that: A limiting groove seat (20) is fixedly mounted on the end of the glue-applying cavity (3), and the rotating disk (19) is movably mounted in the limiting groove seat (20); The rotating disk (19) is provided with meshing teeth in a circumferential direction, and a driving gear (21) meshing with the meshing teeth is provided on a side of the rotating disk (19), the driving gear (21) is connected to a first driving motor (22), and a driving end of the first driving motor (22) is connected to the center position of the driving gear (21) to drive the driving gear (21) to rotate; The rotating disk (19) is driven to rotate by the driving gear (21), and drives the upper glue plate (11) to move inside the arc-shaped inner cavity (10) through the connecting rod (17), the connecting block (16), the sliding bracket (15), and the connecting curved rod (14).

3. The release layer gluing device of the cellulose film tape according to claim 2, characterized in that: A locking shaft (5) is installed at the axial end of the pressing roller (2), and the locking shaft (5) brakes the rotation of the pressing roller (2) when the glue inlet pipe (8) injects glue into the glue coating cavity (7), so as to suspend the gluing process of the release layer (6).

4. The release layer gluing device of the cellulose film tape according to claim 3, characterized in that: The locking shaft (5) comprises a brake shaft (51) connected to the end of the pressure roller (2), and a brake disc (52) connected to the outer end of the brake shaft (51); The brake disc (52) is provided with a plurality of brake grooves (53); the rotating disc (19) is externally connected to a connecting tube (510); the connecting tube (510) is externally connected to a connecting ring (54); and the outer peripheral side of the connecting ring (54) is connected to a plurality of protrusions (55); The inner side of the limiting groove seat (20) is connected to a mounting ring seat (56), a plurality of connecting arc seats (57) are connected inside the mounting ring seat (56), a bearing seat (58) is installed between the connecting arc seats (57), a braking hook (59) is rotatably installed on the bearing seat (58), the bottom of the braking hook (59) is supported on the outer peripheral side of the connecting ring (54), and the top of the braking hook (59) is directly opposite to the braking groove (53); When the rotating disk (19) rotates, the protrusion (55) is driven by the connecting tube (510) and the connecting ring (54) to rotate to the bottom of the braking hook (59) and support the bottom of the braking hook (59) outwardly. The braking hook (59) rotates around the bearing seat (58) under the support of the bottom, so that the hook head of the braking hook (59) rotates toward the side of the braking disk (52) and is engaged in the braking groove (53); The brake shaft (51) sequentially passes through the mounting plate (23), the rotating disk (19), the connecting tube (510), and the connecting ring (54); the outer diameter of the brake shaft (51) is smaller than the inner diameters of the connecting tube (510) and the connecting ring (54).

5. The release layer gluing device of the cellulose film tape according to claim 4, characterized in that: A support seat (24) is installed at the bottom of the upper glue cavity (3), and the upper glue cavity (3) is fixedly installed on the support seat (24); One end of the pressure roller (2) away from the brake shaft (51) is connected to a drive shaft (25), and the end of the drive shaft (25) is connected to a second drive motor (26); the drive end of the second drive motor (26) is connected to the drive shaft (25) and drives the pressure roller (2) to rotate via the drive shaft (25).

6. The release layer gluing device of the cellulose film tape according to claim 1, characterized in that: A guide roller (27) is provided at the upstream end of the pressure roller (2), and the guide roller (27) transfers the release layer (6) to the pressure roller (2) in a state away from the wall of the gluing cavity (3).

7. The release layer gluing device of the cellulose film tape according to claim 6, characterized in that: A release layer unwinding mechanism (1) is provided at the upstream end of the lead roller (27); The release layer unwinding mechanism (1) comprises a feeding roller (101) and a plurality of conveying rollers (102); The release layer (6) is drawn out from the feeding roller (101), transmitted to the pressing roller (2) via a plurality of the conveying rollers (102) and the lead roller (27), and shuttles through the colloid coating chamber (7).

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