Facial paper gluing device of color box
By setting up a grid-like recess and an elastic scraper in the color box face paper gluing device, combined with the conveyor pressure roller, the problems of uneven glue application and paper roll failure were solved, and a highly efficient and stable face paper gluing process was achieved.
Patent Information
- Application Number
- CN202520602347.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing color box paper gluing equipment suffers from problems such as uneven glue application, glue overflow, and frequent paper roll failures, resulting in low production efficiency and unstable quality.
The adhesive roller is designed with grid-like or mesh-like recesses on its surface. Combined with an elastic scraper and a conveyor roller, this ensures that the adhesive only enters the recesses and is pressed firmly against the paper by the conveyor roller, thus preventing adhesive overflow and paper roll defects.
It improves the uniformity of adhesive application on the face paper and production efficiency, reduces the need for manual adhesive replenishment, reduces the occurrence of paper roll defects, and improves product quality.
Smart Images
Figure CN223934282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of color box production technology, specifically to a gluing device for the face paper of a color box. Background Technology
[0002] A type of high-end color box on the market typically consists of a grey box (grey board) and a face paper (such as coated paper, specialty paper, or art paper of a certain thickness) pasted onto the surface of the grey box. It is commonly used in gift packaging, electronic product packaging, and luxury goods packaging, where high quality is required. In the color box production process, glue needs to be applied to the face paper before pasting. Existing face paper pasting equipment basically consists of a glue-coating roller, a glue-applying roller, and a conveyor roller. The glue-applying roller evenly spreads glue on the surface of the glue-coating roller, while the face paper passes between the glue-coating roller and the conveyor roller and is driven, ensuring that the glue is applied to one side of the face paper. This traditional method of applying adhesive to face paper faces numerous problems: During the rotation of the adhesive roller around its axis, the adhesive creates uneven watermarks on the roller surface due to centrifugal force. To make these watermarks more uniform, some methods incorporate a grid texture on the roller surface to alter the pattern or thin the adhesive layer. However, it's still difficult to prevent adhesive from overflowing from the edges or openings of the face paper. To avoid adhesive sticking to the conveyor roller and affecting the printing on the other side of the face paper or subsequent printing, a gap much larger than the face paper thickness is usually required between the conveyor roller and the adhesive roller. As the face paper passes through this gap, the conveyor roller supports and rotates the paper, while the side of the face paper to be glued comes into contact with the adhesive and adheres to the product on the adhesive roller, thus moving forward with the adhesive roller and conveyor roller. Furthermore, the face paper to be glued is often uneven, typically featuring molded patterns or text protruding towards the printing side. This unevenness is a common issue in product design. The perforated windows, the creases formed at the bends of adjacent surfaces, and the warping caused by the folded ears all contribute to the problem. This prevents the adhesive side of the face paper from fully adhering to the adhesive roller, resulting in many areas of incomplete adhesive application after gluing, especially uneven areas. These areas require manual glue application, leading to low gluing efficiency and inconsistent adhesive quality. Incompletely glued areas are prone to bubbling, while excessively glued areas cause glue to overflow from the edges, requiring manual cleaning later. On the other hand, the face paper is propelled forward by the adhesive roller due to its adhesion to the glue. Therefore, a peeling knife is needed on the paper exit side to separate the face paper from the adhesive roller. However, in actual production, the peeling knife occasionally becomes loose and detaches from the adhesive roller surface. This causes the face paper to rotate with the adhesive roller and be pressed tightly against its surface, resulting in paper roll defects. This requires significant downtime for cleaning the adhesive roller. Utility Model Content
[0003] The purpose of this invention is to provide a color box face paper gluing device that provides stable glue quality, high production efficiency, and is less prone to paper roll defects.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A gluing device for the face paper of a color box is used to apply glue to one side of the face paper. It includes a glue-applying roller, a scraper, a conveying roller, and a drive device for driving the glue-applying roller and the conveying roller to rotate relative to each other around their respective axes. The outer peripheral surface of the glue-applying roller has a grid-like or mesh-like recessed portion for retaining glue. The scraper includes a mounting plate and a metal scraper fixed to the mounting plate. The edge of the scraper elastically abuts against the surface of the glue-applying roller to scrape off the glue. The conveying roller and the glue-applying roller form a conveying gap, not greater than the thickness of the face paper, for the face paper to pass through.
[0006] In a preferred embodiment, the two ends of the conveying roller are mounted via bearing seats, and the bearing seats are connected to elastic elements that force the conveying roller to move closer to the rubber-coated roller.
[0007] In a preferred embodiment, the rubber roller is provided with a cooling water channel structure to stabilize the temperature of the recessed portion.
[0008] In a preferred embodiment, the device further includes an installation rod arranged parallel to the adhesive roller, the installation rod having a plurality of paper-peeling claws installed on it, the paper-peeling claws corresponding to the paper-exiting side of the face paper, and the tips of the paper-peeling claws abutting against the surface of the adhesive roller.
[0009] The beneficial effects of this invention are as follows: By setting grid-like or mesh-like recesses on the surface of the glue-coating roller, and then using an elastic scraper to ensure that the glue only enters the recesses while leaving the glue-coating roller surface untouched, the glue will not seep through the openings or edges of the face paper and stick to the surface of the conveyor roller, thus providing the necessary conditions for subsequent pressing and transmission of the face paper. Various unevennesses on the face paper are temporarily flattened by the conveyor roller, ensuring that the glue is applied evenly across the entire face paper surface without the need for manual glue application later. Because the face paper is only coated with glue at the locations corresponding to the recesses, and the process relies on the conveyor roller for transmission, and because there is no glue outside the recesses on the glue-coating roller surface, the face paper is less likely to stick to the glue-coating roller surface and cause paper roll defects. In summary, this glue-coating device greatly improves production efficiency and glue application quality, and reduces the likelihood of paper roll defects. Attached Figure Description
[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0011] Figure 1 This is a schematic diagram of the overall structure of the gluing device in Example 1;
[0012] Figure 2 This is a partial structural diagram of the rubber roller in Example 1;
[0013] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the gluing device in Example 1. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings:
[0015] refer to Figures 1 to 3 This embodiment provides a gluing device for the face paper of a color box, used to apply glue to one side of the face paper before pasting. The device includes a parallel adhesive roller 1 for applying adhesive to one side of the face paper, a scraper 2 for distributing adhesive on the adhesive roller 1, a conveying roller 3 for conveying the face paper and applying adhesive together with the adhesive roller 1, and a drive device 4 for driving the adhesive roller 1 and the conveying roller 3 to rotate relative to each other around their respective axes. In this embodiment, the drive device 4 uses a motor as the power output, and the transmission part transmits the rotation to the adhesive roller 1 through a synchronous belt. The adhesive roller 1 and the conveying roller 3 are driven by gear meshing. This structure can simultaneously drive the adhesive roller 1 and the conveying roller 3 to rotate around their own axes. In other embodiments, the transmission part can be replaced by a gear set or a linkage structure, or the adhesive roller 1 and the conveying roller 3 can each be driven to rotate by a motor. The outer peripheral surface of the adhesive roller 1 is provided with a grid-like or mesh-like recessed portion 11 for retaining adhesive. The recessed portion 11 refers to the structure recessed into the surface of the adhesive roller 1, and the depth, shape and spacing of each recessed portion 11 are usually consistent. The scraper 2 includes a mounting plate 2a and a metal scraper 2b fixed on the mounting plate 2a. The edge of the scraper 2b elastically abuts against the surface of the adhesive roller 1 to scrape off the adhesive on the surface of the adhesive roller 1, so that the adhesive is only left in each recess 11. The conveying pressure roller 3 and the adhesive roller 1 form a conveying gap 31 for the adhesive paper to pass through, which is no greater than the thickness of the adhesive paper.
[0016] The face paper has a certain thickness and has already undergone surface printing processes before pasting, such as embossing to create raised or recessed text and patterns, die-cutting to cut out outlines, folds, and slots, and windowing to cut out certain areas. Therefore, the adhesive side of the face paper is uneven before applying glue. By setting evenly distributed recesses 11 on the surface of the glue-applying roller 1, and then using a scraper 2b to elastically press against the surface of the glue-applying roller 1, the glue only enters the recesses 11. The face paper is then pressed against the surface of the glue-applying roller 1 by the conveying pressure roller 3. This ensures that the face paper surface is only coated with glue at the locations corresponding to the recesses 11, preventing glue from seeping through the openings or edges of the face paper and sticking to the surface of the conveying pressure roller 3. Various unevennesses on the face paper are temporarily flattened by the conveying pressure roller 3, allowing glue to be applied evenly across the entire face paper surface without the need for manual touch-ups. Because the face paper is only coated with glue at the locations corresponding to the recesses 11, and this is achieved through the conveying pressure roller 3, and because there is no glue outside the recesses 11 on the surface of the glue-applying roller 1, the face paper is less likely to stick to the surface of the glue-applying roller 1, causing paper roll defects. In summary, this glue-applying device significantly improves production efficiency and glue application quality, and reduces the likelihood of paper roll defects.
[0017] In a preferred embodiment, the two ends of the conveying roller 3 are mounted via bearing seats, and the bearing seats are connected to elastic elements that force the conveying roller 3 to move closer to the adhesive application roller 1. The elastic elements are typically springs or sheet springs. These elastic elements provide pressure to the conveying roller 3 to move closer to the adhesive application roller 1, resulting in a certain adaptive pressing force between the two rollers on the paper. This allows for better contact between all parts of the paper and the adhesive application roller 1 to complete the adhesive application; it also simplifies the adjustment of the gap between the conveying roller 3 and the adhesive application roller 1.
[0018] In a preferred embodiment, the adhesive roller 1 of this embodiment is provided with a cooling water channel structure to stabilize the temperature of the recessed portion 11. The cooling water channel structure can adopt a conventional structure from the mechanical field, such as including a water circulation pipe located within the adhesive roller 1 and a cooling device connected to the water circulation pipe. This is existing conventional technology and will not be elaborated further. Since the recessed portion 11 has a small space, and friction with the scraper plate 2 during prolonged operation can cause the temperature to rise, the adhesive within the recessed portion 11 is prone to solidification. Providing a cooling water channel structure ensures the stability of the adhesive roller 1 surface and prevents the adhesive from solidifying, thus affecting the adhesive application effect.
[0019] In a preferred embodiment, the gluing device further includes a mounting rod 51 arranged parallel to the gluing roller 1. A plurality of paper-peeling claws 5 are mounted on the mounting rod 51, each corresponding to the paper exit side of the face paper, with its tip abutting against the surface of the gluing roller 1. Although the adhesion between the face paper and the gluing roller 1 is relatively small after gluing in this embodiment, and they can basically separate automatically, the paper-peeling claws 5 ensure that the glued face paper will definitely separate from the gluing roller 1, preventing accidental paper winding failures.
[0020] The above description does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A device for applying adhesive to the face paper of a color box, used for applying adhesive to one side of the face paper, characterized in that: The device includes parallel-arranged adhesive application rollers, a scraper, a conveying pressure roller, and a drive device for driving the adhesive application rollers and the conveying pressure roller to rotate relative to each other around their respective axes. The outer peripheral surface of the adhesive application rollers is provided with grid-like or mesh-like recesses for retaining adhesive. The scraper includes a mounting plate and a metal scraper fixed to the mounting plate. The edge of the scraper elastically abuts against the surface of the adhesive application rollers to scrape off the adhesive from the surface of the adhesive application rollers. The conveying pressure rollers and the adhesive application rollers form a conveying gap, not greater than the thickness of the face paper, through which the face paper passes.
2. The gluing device for the face paper of a color box according to claim 1, characterized in that: The two ends of the conveying roller are mounted via bearing seats, and the bearing seats are connected to elastic elements that force the conveying roller to move closer to the rubber cloth roller.
3. The gluing device for the face paper of a color box according to claim 1, characterized in that: The rubber roller is equipped with a cooling water channel structure to stabilize the temperature of the recessed area.
4. The gluing device for the face paper of a color box according to claim 1, characterized in that: It also includes an installation rod arranged parallel to the rubber roller, on which a plurality of paper-peeling claws are installed. The paper-peeling claws correspond to the paper-exiting side of the face paper, and the tips of the paper-peeling claws abut against the surface of the rubber roller.