A straight plating paper production and processing device

Abstract

The utility model belongs to special paper production technical field relates to a kind of straight plating paper production and processing device, including base, coating and dyeing component and guide roller.Coating and dyeing component are symmetrically provided with two groups about guide roller, each group includes coating and dyeing roller and its bottom liquid storage tank body, coating and dyeing roller outside is equipped with water absorption sleeve.Guide roller is located at the bottom of two coating and dyeing rollers, so that bottom paper sequentially passes through a coating and dyeing roller top, guide roller bottom, another coating and dyeing roller top, to realize double-sided uniform coating and dyeing.Liquid storage tank body one end is concave and forms catchment area, and optionally set by the scraper driven by driving shaft, for residual coating is swept to catchment area, improve coating utilization rate.The utility model is through symmetrical coating and dyeing and water absorption sleeve transfer printing structure, effectively solve the uneven coating in the prior art, coating and dyeing effect is poor when coating liquid level is low and the problem of complex spray structure, significantly improve the production quality and efficiency of straight plating paper, reduce device cost and design difficulty simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of special paper production technology, and relates to direct-coated paper, and more particularly to a direct-coated paper production and processing device. Background Technology

[0002] Direct-coated paper is a special packaging material with broad application prospects in the packaging industry. It is made by directly coating a layer of polyethylene or polypropylene plastic onto a base paper. It is mainly used in various high-end packaging in daily life, such as cigarettes, wine, food, medicine, daily necessities and cosmetics. Its high gloss and bright appearance can greatly enhance shelf effect and attract consumers' attention.

[0003] Currently, in the production of direct-coated paper, a coating tank is usually used to immerse the base paper in the coating (e.g., CN205112653U). However, when there is little coating remaining in the coating tank, it cannot completely immerse the base paper, resulting in incomplete coating and affecting the production quality of the direct-coated paper.

[0004] To ensure the production quality of direct-coated paper, existing technologies have disclosed production and processing devices employing a spray structure. This includes a coating roller and a spray structure located on the side of the coating roller. The spray structure includes spray heads and atomizing plates, so that the coating material flowing from the spray heads is sprayed in a mist form onto the coating roller under the action of the atomizing plates, and then the coating roller transfers the coating material onto the base paper. While this improves the production quality of direct-coated paper to some extent, the distance between two adjacent spray heads needs precise adjustment. If the distance is too small, the coating material on the coating roller will overlap, resulting in uneven coating. If the distance is too large, there will be areas of insufficient material on the coating roller, resulting in parts of the base paper not being coated. Therefore, adjusting the distance between two adjacent spray heads becomes a challenge in the production and processing of direct-coated paper, increasing the design difficulty and production cost of the device. Summary of the Invention

[0005] To address the technical problems existing in the prior art, such as uneven coating, low paint utilization, and complex and difficult-to-adjust spray structure, the purpose of this utility model is to disclose a direct-coating paper production and processing device. By optimizing the structural design, it can achieve uniform coating on both sides of the base paper, improve production quality and efficiency, and reduce device costs.

[0006] Technical solution

[0007] A direct-coating paper production and processing apparatus includes a substrate, a coating assembly disposed on the substrate, and a guide roller rotatably connected to the substrate. The coating assembly is symmetrically arranged in two sets about the guide roller. Each set of the coating assembly includes a coating roller and a liquid storage tank disposed at the bottom of the coating roller. A water-absorbing sleeve is sleeved on the outside of the coating roller. The guide roller is located at the bottom of the two coating rollers. The paper feeding path of the base paper is configured to pass sequentially through the top of one coating roller, the bottom of the guide roller, and the top of the other coating roller, so that the water-absorbing sleeve coats the coating onto both sides of the base paper.

[0008] Preferably, the liquid storage tank has a first end and a second end opposite to the first end, the first end being recessed downward to form a water collection area, and the dyeing roller is located at the first end.

[0009] Preferably, the liquid storage tank is provided with a scraper and a driving structure. The scraper is movably disposed inside the liquid storage tank, and the driving structure is used to drive the scraper to move between the first end and the second end to scrape the paint to the water collection area.

[0010] Preferably, the absorbent sleeve is a tubular structure made of highly absorbent and wear-resistant sponge material, with its inner diameter matching the outer diameter of the coating roller, tightly covering the surface of the coating roller to ensure the stability of paint adsorption and transfer.

[0011] Preferably, the drive structure includes a drive shaft and a drive component for driving the drive shaft to rotate, and the drive shaft is threadedly connected to the scraper.

[0012] Preferably, the scraper includes a scraping section located inside the liquid storage tank and a connecting section located outside the liquid storage tank, and the drive shaft is threaded through the connecting section.

[0013] Preferably, the bottom of the liquid storage tank protrudes upward to form a receiving space for accommodating the drive shaft, and the connecting section has a transmission part located in the receiving space, with the drive shaft threaded through the transmission part.

[0014] Preferably, the second end of the liquid storage tank is open, and the second end of the liquid storage tank is sealed with a sealing plate.

[0015] Preferably, the end wall of the first end is curved upward from the water collection area.

[0016] Preferably, the substrate has a dyeing section and a heating section, the guide roller and the dyeing assembly are both located in the dyeing section, the heating section is provided with a heating box, the heating box is provided with an inlet and an outlet for the base paper to pass through, the inlet and the outlet are arranged opposite to each other, and the inlet is arranged towards the dyeing section.

[0017] Preferably, the heating box includes a box body, a conveying roller disposed inside the box body, and a heating element disposed inside the box body for heating air.

[0018] Beneficial effects

[0019] This invention achieves uniform coating on both sides of the base paper by using two sets of coating components symmetrically arranged around the guide rollers, combined with a specific paper feeding path, effectively improving the production quality of direct-coated paper. The method of transferring coating from the storage tank using a water-absorbing sleeve overcomes the defect of incomplete coating when the coating level is low in immersion coating, improving coating utilization and coating stability. The sophisticated spraying structure (spray head and atomizing plate) of existing technologies is eliminated, simplifying the device structure and reducing production design difficulty and manufacturing costs. By setting up a scraper and drive structure, residual coating in the storage tank can be automatically scraped and concentrated in the water collection area, ensuring that the coating roller can still effectively absorb coating even when the amount of coating is small, extending continuous working time and reducing the frequency of manual replenishment. The special design of the water collection area of ​​the storage tank (such as concave shape and curved end walls) further optimizes the coating collection effect, and together with the scraper structure, maximizes the utilization of the coating. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a direct-coating paper production and processing device;

[0021] Figure 2 A partial structural cross-sectional view of the liquid storage tank in one embodiment;

[0022] Figure 3 A three-dimensional structural schematic diagram of the liquid storage tank in one embodiment;

[0023] Figure 4 A cross-sectional view of the liquid storage tank in one embodiment, mainly showing the cooperation relationship between the scraper and the accommodating space;

[0024] Figure 5 A schematic diagram of the liquid storage tank structure after the sealing plate has been removed in one embodiment.

[0025] The following are the reference numerals in the figure: 1. Substrate; 2. Coating component; 21. Coating roller; 211. Absorbent sleeve; 22. Liquid storage tank; 221. Water collection area; 222. Scraper; 223. Accommodation space; 224. Sealing plate; 225. Scraping section; 226. Connecting section; 227. Transmission unit; 3. Guide roller; 4. Drive structure; 41. Drive shaft; 42. Drive component; 5. Heating box; 51. Box body; 52. Conveyor roller; 53. Heating component. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0027] The following is in conjunction with the appendix Figures 1 to 5 The embodiments of this utility model will be described in detail.

[0028] Reference Figure 1 The direct-coating paper production and processing device disclosed in this utility model mainly includes a substrate 1, a coating component 2, a guide roller 3, and a heating box 5.

[0029] The substrate 1 serves as a supporting structure and can be divided into a coating section and a heating section. The coating assembly 2 and the guide roller 3 are located in the coating section, and the heating box 5 is located in the heating section.

[0030] Two sets of coating components 2 are symmetrically arranged about the guide rollers 3. Each set of coating components 2 includes a coating roller 21 and a liquid storage tank 22 located at the bottom of the coating roller 21. The coating roller 21 is rotatably connected to the base 1 through bearings or other structures, and an absorbent sleeve 211 is fitted on its outside. Preferably, the absorbent sleeve 211 is a tubular structure made of highly absorbent and wear-resistant sponge material, and its inner diameter is adapted to the outer diameter of the coating roller, tightly covering the surface of the coating roller 21 to ensure the stability of paint adsorption and transfer.

[0031] The guide roller 3 is also rotatably connected to the substrate 1, and its mounting position is lower than the two coating rollers 21. The paper feeding path of the base paper (not shown in the figure) is specifically configured as follows: first, it passes over the top of one coating roller 21 (so that the absorbent sleeve 211 on the coating roller 21 coats the coating onto one side of the base paper), then it goes down around the bottom of the guide roller 3 and turns, and finally it goes up over the top of another coating roller 21 (so that the absorbent sleeve 211 on the other coating roller 21 coats the coating onto the other side of the base paper). Thus, continuous and uniform coating on both sides of the base paper is achieved.

[0032] Reference Figures 2 to 5 The liquid storage tank 22 is used to hold the paint. It has a first end and a second end opposite to the first end. The first end is recessed downward to form a water collection area 221, and the coating roller 21 is located directly above the first end, so that the absorbent sleeve 211 on it can fully contact the paint in the water collection area 221. The end wall of the first end preferably curves upward from the bottom of the water collection area 221 to form an arc transition. This structure facilitates the natural flow of the paint and its collection in the water collection area 221.

[0033] To ensure coating effectiveness even at low paint levels, a scraper 222 and a drive structure 4 for driving the scraper 222 are installed inside the storage tank 22. The scraper 222 is movably disposed inside the storage tank 22, and its shape is adapted to the bottom contour of the storage tank 22. The drive structure 4 drives the scraper 222 to reciprocate between the first and second ends of the storage tank 22, thereby scraping and concentrating the paint dispersed throughout the storage tank 22 into the water collection area 221.

[0034] In this embodiment, the drive structure 4 includes a drive shaft 41 and a drive component 42 as a power source. The drive component 42 is preferably a servo motor, which is fixedly installed on the outside of the liquid storage tank 22. The drive shaft 41 is connected to the output shaft of the drive component 42, and is driven to rotate by the drive component 42.

[0035] The scraper 222 includes a scraping section 225 located inside the liquid storage tank 22 and a connecting section 226 extending to the outside of the liquid storage tank 22. The drive shaft 41 is threadedly engaged with the connecting section 226; specifically, the drive shaft 41 is threaded through the connecting section 226. When the drive shaft 41 rotates, the scraper 222 is driven to move axially along the drive shaft 41 via threaded transmission.

[0036] Furthermore, the bottom of the liquid storage tank 22 protrudes upward to form an accommodating space 223. A portion of the connecting section 226 (i.e., the transmission part 227) is located within this accommodating space 223, and the drive shaft 41 is also accommodated within this space and threaded through the transmission part 227. This design brings the drive shaft 41 closer to the center of the scraper 222, improving the stability of the scraper 222's movement, while also protecting the drive shaft 41.

[0037] The second end of the liquid storage tank 22 is open to facilitate the installation and maintenance of the scraper 222. This opening is sealed by a sealing plate 224. Preferably, the sealing plate 224 is fixed with screws and sealant is applied to the joint to ensure a tight seal.

[0038] Back Figure 1 After the base paper is coated in the dyeing section, it enters the heating section for drying. The heating section is equipped with a heating chamber 5, and the chamber body 51 of the heating chamber 5 has an inlet and an outlet for the base paper to pass through, with the inlet facing the dyeing section. The heating chamber 5 is equipped with multiple conveying rollers 52 for guiding and conveying the base paper; it is also equipped with a heating element 53, preferably an electric heating tube, for heating the air inside the chamber body 51, thereby drying the coating on the base paper.

[0039] This device is also equipped with a drive mechanism for synchronously driving the coating roller 21, guide roller 3, and conveyor roller 52. This drive mechanism can be a single motor working in conjunction with a belt / sprocket transmission system, or it can be driven independently by multiple motors.

[0040] Working principle:

[0041] During operation, the coating is added to the storage tank 22, and the coating roller 21 rotates, with its absorbent sleeve 211 adsorbing the coating. The base paper travels along a preset path, contacting the absorbent sleeves 211 on the two coating rollers 21 in sequence to complete double-sided coating. When the coating level in the storage tank 22 drops, the drive unit 42 can be activated to drive the scraper 222 to scrape the remaining coating to the water collection area 221, ensuring continuous and effective coating. The coated base paper enters the heating chamber 5, where it is heated and dried to form the final direct-coated paper product.

[0042] The above-described embodiments are merely specific implementations of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the description of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A direct-coating paper production and processing device, characterized in that: The system includes a substrate (1), a coating assembly (2) disposed on the substrate (1), and a guide roller (3) rotatably connected to the substrate (1). The coating assembly (2) is symmetrically arranged in two sets about the guide roller (3). Each set of the coating assembly (2) includes a coating roller (21) and a liquid storage tank (22) disposed at the bottom of the coating roller (21). The coating roller (21) is covered with a water-absorbing sleeve (211). The guide roller (3) is located at the bottom of the two coating rollers (21). The paper feeding path of the base paper is configured to pass through the top of one of the coating rollers (21), the bottom of the guide roller (3), and the top of the other coating roller (21) in sequence, so that the water-absorbing sleeve (211) coats the coating onto both sides of the base paper.

2. The direct-coating paper production and processing apparatus according to claim 1, characterized in that: The liquid storage tank (22) has a first end and a second end opposite to the first end. The first end is recessed downward to form a water collection area (221), and the dyeing roller (21) is located at the first end.

3. The direct-coating paper production and processing apparatus according to claim 2, characterized in that: The liquid storage tank (22) is provided with a scraper (222) and a driving structure (4). The scraper (222) is movably disposed inside the liquid storage tank (22). The driving structure (4) is used to drive the scraper (222) to move between the first end and the second end to scrape the paint to the water collection area (221).

4. The direct-coating paper production and processing apparatus according to claim 3, characterized in that: The drive structure (4) includes a drive shaft (41) and a drive member (42) for driving the drive shaft (41) to rotate, wherein the drive shaft (41) is threadedly connected to the scraper (222).

5. The direct-coating paper production and processing apparatus according to claim 4, characterized in that: The scraper (222) includes a scraping section (225) located inside the liquid storage tank (22) and a connecting section (226) located outside the liquid storage tank (22), and the drive shaft (41) is threaded through the connecting section (226).

6. The direct-coating paper production and processing apparatus according to claim 5, characterized in that: The bottom of the liquid storage tank (22) protrudes upward to form a receiving space (223) for accommodating the drive shaft (41). The connecting section (226) has a transmission part (227) located in the receiving space (223), and the drive shaft (41) is threaded through the transmission part (227).

7. The direct-coating paper production and processing apparatus according to claim 5, characterized in that: The second end of the liquid storage tank (22) is open, and the second end of the liquid storage tank (22) is sealed with a sealing plate (224).

8. The direct-coating paper production and processing apparatus according to claim 2, characterized in that: The end wall of the first end is provided to bend upward from the water collection area (221).

9. The direct-coating paper production and processing apparatus according to any one of claims 1 to 8, characterized in that: The substrate (1) has a dyeing section and a heating section. The guide roller (3) and the dyeing assembly (2) are both located in the dyeing section. The heating section is provided with a heating box (5). The heating box (5) is provided with an inlet and an outlet for the bottom paper to pass through. The inlet and the outlet are arranged opposite to each other, and the inlet is arranged towards the dyeing section.

10. The direct-coating paper production and processing apparatus according to claim 9, characterized in that: The heating box (5) includes a box body (51), a conveyor roller (52) disposed inside the box body (51), and a heating element (53) disposed inside the box body (51) for heating air.

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