Film laminating machine gluing device

Abstract

The utility model discloses a kind of film compounder gluing device, including rubber transfer roller and second ceramic roller, first ceramic roller, the side of second ceramic roller, still be equipped with a glue spraying mechanism, the glue spraying mechanism includes glue mixing mechanism and the tee of T-shaped three-way pipe connected on the glue outlet of glue mixing mechanism, the three ends of the tee are one glue inlet end and two glue application ends, the consistent length of two glue application ends outward protrudes;The two sides of second ceramic roller, still be equipped with a stroke limit stopper respectively.The utility model structure is ingenious, through three-way pipe, glue can completely cover the surface of second ceramic roller between two stroke limit stoppers, so that in the two ends of second ceramic roller needing to be coated with glue cannot appear glue distribution insufficient dead zone, easy to guarantee film overall composite quality, and glue amount has not risen, also need not extra expand glue spraying width, the area of spraying and the width required are consistent, subsequent will not pollute film edge.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical design, and in particular to a film laminating machine gluing device. Background Technology

[0002] With the advancement of technology, various composite films are being used more and more in production and daily life. In existing technologies, conventional adhesives are commonly used for lamination. Specifically, during film lamination, a laminating device as described in Chinese Patent CN222093798U is typically used to apply adhesive to the films to be laminated. This adhesive device includes a frame 1, a first rubber roller 4, a second rubber roller 2, and a screen roller 3. The first rubber roller 4 and the screen roller 3 are mounted side by side on the frame 1, with the second rubber roller 2 positioned above the screen roller 3. An adhesive trough 13 is located below the first rubber roller 4 and the screen roller 3. During adhesive application, the first rubber roller 4 and the screen roller 3 rotate in the same direction. As the screen roller 3 rotates, it carries the adhesive from the adhesive trough 13 below it onto itself. The first rubber roller 4, rotating in the same direction, scrapes off any excess adhesive carried onto the screen roller 3 and carries the scraped adhesive back into the adhesive trough 13. Then, the screen roller 3 evenly applies the adhesive it carries onto the second rubber roller 2. Finally, the second rubber roller 2 applies adhesive to one side of the film to facilitate subsequent lamination.

[0003] However, as the demand for film products becomes increasingly diversified, the requirements for adhesives used in composite films, especially in precision instruments, are becoming more stringent. Specifically, the requirements for adhesive strength and / or dosage, as well as curing time, are becoming more demanding. AB adhesive, as a strong bonding agent, has the characteristic of requiring only a small amount to achieve excellent adhesion. When achieving the same bonding strength, its dosage can be significantly reduced compared to conventional adhesives, thus facilitating the reduction of composite film thickness. Furthermore, its short curing time makes AB adhesive increasingly used in the gluing devices of laminating machines.

[0004] Because of its short curing time, AB glue needs to be mixed with the two adhesives before use, making it impossible to directly place the mixed AB glue into the glue tank for use. Therefore, existing technologies often use mixing devices, such as those shown in Chinese patents CN210876040 U and CN 105032230 A, to mix the AB glue and then spray the mixed glue onto the aforementioned screen roller. Specifically, the mixing device is mounted on a moving trolley and includes a mixing seat for feeding the two adhesives and a mixing tube with an internal screw for mixing the two adhesives. The end of the mixing tube is a glue outlet, which is vertically aligned with the screen roller surface from an angle. After the AB glue is mixed, the glue is sprayed directly onto the screen roller surface from the glue outlet at the end of the mixing tube. The moving trolley drives the movement of the mixing device, achieving back-and-forth glue spraying onto the screen roller.

[0005] When using this structure, in order to obtain the glue distribution range corresponding to the required width of film lamination on the aforementioned screen roller, limit probes are set at the required positions on both sides of the screen roller to limit the left and right movement range of the mixing tube. The limit probes are set on the limit blocks and located inside the limit blocks. The distance between the two limit blocks corresponds to the required width of film lamination. When the end part of the mixing tube is detected by the limit probe, the moving carriage changes the direction of movement of the mixing device and the mixing tube on it.

[0006] However, due to the lateral distance difference between the limiting probe and its corresponding limiting block, the adhesive sprayed from the mixing tube cannot reach the area between the limiting probe and the limiting block. This causes dead zones of old adhesive to easily appear when applying adhesive to both ends of the screen rollers. In other words, the adhesive is sprayed between the two rollers, but due to the limiting probe, the adhesive spraying structure cannot reach the top sides, thus forming dead zones. However, products using AB adhesive typically require very high adhesion. To avoid the dead zone affecting film lamination, existing technologies often solve this problem by increasing the width of the adhesive spraying area. This involves further increasing the distance between the two limiting blocks, which is the same as the required width for film lamination, thereby eliminating the interference from the dead zone. However, this approach, by increasing the spray area, inevitably leads to increased glue consumption, higher costs, and glue waste compared to the original method. Furthermore, because the expanded area is difficult to control, if it's too wide, the film edges may not be fully covered, resulting in excess glue adhering to the edges. This not only poses a risk of glue overflow but also creates numerous problems for subsequent production and use. Therefore, there is a need for a film laminating machine gluing device that can solve the problem of dead zones in AB glue spraying while avoiding glue waste, overflow, and film edge contamination. Utility Model Content

[0007] In order to overcome the shortcomings of the existing problems mentioned above, this utility model provides a film laminating machine gluing device that can solve the problem of glue spraying dead zone without increasing glue consumption, avoid glue overflow, and avoid contaminating the film edge.

[0008] The technical solution adopted by this utility model to solve its technical problem is: The film laminating machine's gluing device includes a rubber transfer roller 2 located above for applying glue to the film and a second ceramic roller 3 located below for transferring glue onto the rubber transfer roller 2. Next to the second ceramic roller 3, a first ceramic roller 1 is provided for scraping off excess glue or scraping the glue more evenly on the second ceramic roller 3. Next to the second ceramic roller 3, a glue spraying mechanism is provided for spraying glue onto the second ceramic roller 3. The glue spraying mechanism includes a mixing mechanism 4 that can move left and right along the second ceramic roller 3 and a T-shaped three-way pipe 6 connected to the glue outlet 7 of the mixing mechanism 4 via a connector 5. The glue outlet 7 of the mixing mechanism 4 is perpendicular to the glue outlet 7 from an oblique upward direction. The surface of the second ceramic roller 3 is provided with a three-way tube 6, which has three ends: a larger diameter inlet 8 connected to the glue outlet 7 of the mixing mechanism 4 via a connector 5, and two smaller diameter glue-applying ends 9 for applying glue to the second ceramic roller 3. The two glue-applying ends 9 extend outward to the same length and are located diagonally above and parallel to the second ceramic roller 3. On both sides of the second ceramic roller 3, there is also a stroke limit block 10 for limiting the left and right movement range of the three-way tube 6 in front of the mixing mechanism 4. The distance between the two stroke limit blocks 10 is adapted to the width required for film lamination. A limit probe 15 is provided on the stroke limit block 10.

[0009] Preferably, the mixing mechanism 4 includes a mixing seat 4.1 for feeding two types of adhesives and a mixing tube 4.2 with an internal screw 4.3 for mixing the two types of adhesives. The end of the mixing tube 4.2 is the outlet 7 of the mixing mechanism 4, which is vertically aligned with the surface of the second ceramic roller 3 from an oblique position above.

[0010] Preferably, the connector 5 is a straight cylindrical component. One end of the straight cylindrical component is tightly sealed and fitted onto the outside of the glue outlet 7 of the mixing mechanism and locked by fasteners 11. The glue inlet 8 of the three-way pipe 6 is provided with a retaining ring 14 on its outer surface, which can engage and seal with the inner wall of the end of the straight cylindrical component. The other end of the straight cylindrical component is connected to the glue inlet 8 of the three-way pipe 6 by inserting the end of the glue inlet 8 into the straight cylindrical component and locking it with the retaining ring 14. The glue outlet 7 of the mixing mechanism 4 is at least partially inserted into the glue inlet 8 of the three-way pipe 6.

[0011] Preferably, the glue outlet 7 of the glue mixing mechanism 4 has a gradually narrowing frustoconical structure at its end, and the ports of the three ends of the three-way pipe 6 are all gradually narrowing frustoconical structures.

[0012] Preferably, the mixing mechanism 4 is mounted on a movable trolley 12, which can move left and right along the axis of the second ceramic roller 3. More preferably, the movable trolley 12 is driven by a linear drive device.

[0013] Preferably, a glue groove 13 is provided below the first ceramic roller 1 and the second ceramic roller 3.

[0014] The beneficial effects of this utility model are: This invention relates to a film laminating machine with an ingenious adhesive application device. Through a three-way tube, the adhesive can completely cover the surface of the second ceramic roller between the two travel limit blocks. This prevents dead zones of old adhesive from forming when applying adhesive to both ends of the second ceramic roller—the dead zones where adhesive cannot be sprayed when the spray nozzle encounters the limit probe and the travel limit block. The T-shaped three-way tube effectively covers these dead zones, ensuring overall film lamination quality without increasing adhesive usage or cost. Furthermore, it eliminates the need to expand the adhesive spraying area, ensuring the sprayed area matches the required width and preventing subsequent contamination of the film edges, thus guaranteeing film quality. This highly practical device is worthy of widespread adoption. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a three-dimensional structural schematic diagram of the adhesive application device for a film laminating machine according to an embodiment of the present utility model; Figure 2 for Figure 1 A top-view structural diagram; Figure 3 for Figure 2 Enlarged view at point B in the middle; Figure 4 This is a three-dimensional structural diagram of the film laminating machine adhesive device according to another embodiment of the present utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 5 A schematic diagram of the side view structure; Figure 7 for Figure 6 Enlarged view of some of the structures in the image; Figure 8 This is a three-dimensional structural diagram of the glue spraying mechanism; Figure 9 This is a perspective structural diagram of the glue spraying mechanism; Figure 10 This is a disassembled structural diagram of the glue spraying mechanism; Figure 11 This is a perspective structural diagram of the mixing mechanism. Detailed Implementation

[0016] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0017] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0018] like Figure 1-11 As shown, the film laminating machine's gluing device includes a rubber transfer roller 2 located above for applying glue to the film and a second ceramic roller 3 located below for transferring glue onto the rubber transfer roller 2. Next to the second ceramic roller 3, a first ceramic roller 1 is provided for scraping off excess glue or making the glue more evenly distributed on the second ceramic roller 3. The first ceramic roller 1 and the second ceramic roller 3 rotate in the same direction driven by a motor. Next to the second ceramic roller 3, a glue spraying mechanism is provided for spraying glue onto the second ceramic roller 3. The glue is sprayed onto the second ceramic roller 3 near the position between the first ceramic roller 1 and the second ceramic roller 3. The glue spraying mechanism includes a glue mixing mechanism 4 that can move left and right along the second ceramic roller 3 and a glue outlet 7 connected to the glue mixing mechanism 4 via a connector 5. The T-shaped three-way pipe 6 is located above the mixing mechanism 4. The glue outlet 7 of the mixing mechanism 4 is vertically aligned with the surface of the second ceramic roller 3 from an oblique position above. The three ends of the three-way pipe 6 are a glue inlet 8 with a larger diameter that is connected to the glue outlet 7 of the mixing mechanism 4 through a connector 5, and two glue application ends 9 with smaller diameters for applying glue to the second ceramic roller 3. The two glue application ends 9 extend outward to the same length and are located obliquely above and parallel to the second ceramic roller 3. On both sides of the second ceramic roller 3, there is also a stroke limit block 10 for limiting the left and right movement range of the three-way pipe 6 in front of the mixing mechanism 4. The distance between the two stroke limit blocks 10 is adapted to the width required for film lamination. The stroke limit block 10 is equipped with a limit probe 15.

[0019] Preferably, the mixing mechanism 4 includes a mixing seat 4.1 for feeding two types of adhesives and a mixing tube 4.2 with an internal screw 4.3 for mixing the two types of adhesives. The end of the mixing tube 4.2 is the outlet 7 of the mixing mechanism 4, which is vertically aligned with the surface of the second ceramic roller 3 from an oblique position above.

[0020] Preferably, the connector 5 is a straight cylindrical component. One end of the straight cylindrical component is tightly sealed and fitted onto the outside of the glue outlet 7 of the mixing mechanism and locked by fasteners 11. The glue inlet 8 of the three-way pipe 6 is provided with a retaining ring 14 on its outer surface, which can engage and seal with the inner wall of the end of the straight cylindrical component. The other end of the straight cylindrical component is connected to the glue inlet 8 of the three-way pipe 6 by inserting the end of the glue inlet 8 into the straight cylindrical component and locking it with the retaining ring 14. The glue outlet 7 of the mixing mechanism 4 is at least partially inserted into the glue inlet 8 of the three-way pipe 6.

[0021] Preferably, the glue outlet 7 of the glue mixing mechanism 4 has a gradually narrowing frustoconical structure at its end, and the ports of the three ends of the three-way pipe 6 are all gradually narrowing frustoconical structures.

[0022] Preferably, the mixing mechanism 4 is mounted on a movable trolley 12, which can move left and right along the axis of the second ceramic roller 3. More preferably, the movable trolley 12 is driven by a linear drive device; the linear drive device includes a lead screw, guide rods are provided on both sides of the lead screw, and moving blocks are provided on the lead screw and guide rods.

[0023] Preferably, a glue groove 13 is provided below the first ceramic roller 1 and the second ceramic roller 3.

[0024] At work, The first ceramic roller 4 and the second ceramic roller 3 rotate in the same direction. During the rotation, the second ceramic roller 3 is coated with adhesive by the adhesive spraying mechanism. The first ceramic roller 4, which rotates in the same direction, scrapes the adhesive sprayed onto the second ceramic roller 3 evenly. Then, the second ceramic roller 3 transfers the adhesive it carries evenly to the rubber transfer roller 2. Finally, the rubber transfer roller 2 coats one side of the film with adhesive to facilitate subsequent film lamination.

[0025] During the glue spraying process, after the AB glue is mixed in the glue mixing mechanism, the glue enters the glue inlet of the three-way pipe from the glue outlet at the end of the glue mixing mechanism. Then, under the combined action of glue outlet pressure and gravity, the glue falls in a parabolic trajectory through the two glue application ends on the three-way pipe and lands on the surface of the second ceramic roller. This achieves the application of glue to the second ceramic roller. The movement of the trolley drives the movement of the glue mixing mechanism to achieve the back-and-forth application of glue to all the outer surfaces of the second ceramic roller.

[0026] During this process, the distance between the two travel limit stops is adapted to the width required for film lamination. When the glue application end on the three-way tube at the front end of the glue mixing mechanism comes into contact with the travel limit stops on both sides, the moving trolley changes the direction of movement of the glue mixing mechanism and the three-way tube on it to perform reciprocating glue application.

[0027] Because the two gluing ends on the three-way pipe used for applying glue to the second ceramic roller can contact the travel limit stop without gaps, there are no dead zones on the second ceramic roller lacking glue within the width range that needs to be coated, thus ensuring the overall quality during subsequent film lamination.

[0028] This invention relates to a film laminating machine with an ingenious adhesive application device. Through a three-way pipe, the adhesive can completely cover the surface of the second ceramic roller between the two stroke limit blocks. This prevents dead zones of old adhesive from forming when applying adhesive to both ends of the second ceramic roller. New adhesive sprayed from the nozzle in this area promptly replaces the old adhesive (formed by the adhesive carried up by the first and second ceramic rollers), thus preventing the formation of old adhesive dead zones. This ensures the overall quality of the film lamination without increasing the amount of adhesive used or the cost of adhesive. Furthermore, it eliminates the need to expand the adhesive spraying area, ensuring that the sprayed area matches the required width. This prevents subsequent contamination of the film edges, guaranteeing film quality. The device is highly practical and worthy of widespread adoption.

[0029] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A film laminating machine gluing device, comprising an upper rubber transfer roller (2) for applying glue to the film and a lower second ceramic roller (3) for transferring glue onto the rubber transfer roller (2), wherein a first ceramic roller (1) is provided next to the second ceramic roller (3) for scraping off excess glue from the second ceramic roller (3) or for scraping the glue more evenly, characterized in that, Next to the second ceramic roller (3), there is also a glue spraying mechanism for spraying glue onto the second ceramic roller (3). The glue spraying mechanism includes a mixing mechanism (4) that can move left and right along the second ceramic roller (3) and a T-shaped three-way pipe (6) connected to the glue outlet (7) of the mixing mechanism (4) via a connector (5). The glue outlet (7) of the mixing mechanism (4) is vertically aligned with the roller surface of the second ceramic roller (3) from above. The three ends of the three-way pipe (6) are divided into a glue inlet end with a larger diameter that is connected to the glue outlet (7) of the mixing mechanism (4) via a connector (5). (8) and two smaller diameter adhesive application ends (9) for applying adhesive to the second ceramic roller (3). The two adhesive application ends (9) extend outward with the same length and are located diagonally above and parallel to the second ceramic roller (3). On both sides of the second ceramic roller (3), there is also a stroke limit block (10) for limiting the left and right movement range of the three-way pipe (6) in front of the mixing mechanism (4). The distance between the two stroke limit blocks (10) is adapted to the width required for film lamination. A limit probe (15) is provided on the stroke limit block (10).

2. The film laminating machine adhesive applicator according to claim 1, characterized in that, The mixing mechanism (4) includes a mixing seat (4.1) for feeding two types of glue and a mixing tube (4.2) with a screw (4.3) inside for mixing the two types of glue. The end of the mixing tube (4.2) is the glue outlet (7) of the mixing mechanism (4), which is vertically aligned with the surface of the second ceramic roller (3) from above.

3. The adhesive applicator for a film laminating machine according to claim 1, characterized in that, The connector (5) is a straight cylindrical part. One end of the straight cylindrical part is tightly sealed and fitted outside the glue outlet (7) of the glue mixing mechanism and locked by fasteners (11). The glue inlet end (8) of the three-way pipe (6) is provided with a retaining ring (14) on its outer surface that can engage and seal with the inner wall of the end of the straight cylindrical part. The other end of the straight cylindrical part is connected to the glue inlet end (8) of the three-way pipe (6) by inserting the end of the glue inlet end (8) into the straight cylindrical part and locking it with the retaining ring (14). The glue outlet (7) of the glue mixing mechanism (4) is at least partially inserted into the glue inlet end (8) of the three-way pipe (6).

4. The adhesive applicator for a film laminating machine according to claim 1, characterized in that, The glue outlet (7) of the glue mixing mechanism (4) has a gradually narrowing frustoconical structure at the end, and the ports of the three ends of the three-way pipe (6) are all gradually narrowing frustoconical structures.

5. The adhesive applicator for a film laminating machine according to claim 1, characterized in that, The mixing mechanism (4) is mounted on a moving trolley (12), which can move left and right along the axis of the second ceramic roller (3).

6. The adhesive applicator for a film laminating machine according to claim 1, characterized in that, A glue groove (13) is provided below the first ceramic roller (1) and the second ceramic roller (3).

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