Glue dipping device for improving permeability of gummed paper

Abstract

The utility model belongs to the technical field of auxiliary tooling equipment for preparing gummed paper, and relates to a gum dipping device for improving the permeability of gummed paper, which comprises a small gum tank and a large gum tank which are both filled with gum liquid; a glue dipping roller is arranged above the small glue groove and is used for carrying out single-side glue dipping on the impregnated paper; a plurality of lower guide rollers and a plurality of upper guide rollers are arranged in the large glue tank, the lower guide rollers and the upper guide rollers are arranged in a staggered manner, the lower guide rollers are positioned in the glue solution, and the upper guide rollers are positioned above the glue solution. The impregnated paper is in single-side contact with the liquid level of the glue solution in the small glue groove to form single-side glue dipping, so that part of air in the impregnated paper is removed, and the glue dipping uniformity of the impregnated paper is facilitated; and during secondary impregnation, when the impregnated gummed paper passes through the upper guide roller above, an exhaust process can be further performed in the air, so that the impregnation uniformity of the gummed paper is improved, and the problems of floating on the surface of a rolled pipe and slag falling in the processing process are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary tooling equipment for preparing sizing paper, and particularly relates to a sizing device for improving the impregnation property of sizing paper. Background Art

[0002] 3021 phenolic impregnated sizing paper is made by impregnating unbleached impregnated insulating paper with phenolic resin. As Figure 1 shown, the impregnated insulating paper enters the glue tank 1 through the guide wheel 5. The glue tank 1 is filled with glue liquid 2. After being guided by 2 lower guide rollers 3, the sizing is completed. When the sizing paper is sized, it is easy to have the problems of poor and uneven impregnation property.

[0003] After the sizing is completed, it is baked in an oven, and then the sizing paper is wound into a roll or cut into a semi-cured sheet with a length of 1000mm - 2500mm. The 3021 rolled phenolic impregnated sizing paper is mainly used for rolling tubular products. After the tubular products are cured, milling is required. Poor and uneven impregnation property of the sizing paper will cause problems such as flowered surface of the tube and slag dropping during the processing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sizing device for improving the impregnation property of sizing paper, which solves the problems of uneven impregnation property of 3021 phenolic impregnated sizing paper, resulting in flowered surface of the rolled tube and slag dropping during the processing.

[0005] The utility model is realized by the following technical solutions:

[0006] A sizing device for improving the impregnation property of sizing paper includes a small glue tank and a large glue tank, and both the small glue tank and the large glue tank are filled with glue liquid;

[0007] An impregnating roller is arranged above the small glue tank for impregnating one side of the impregnated paper;

[0008] A number of lower guide rollers and a number of upper guide rollers are arranged in the large glue tank. The lower guide rollers and the upper guide rollers are arranged alternately. The lower guide rollers are located in the glue liquid, and the upper guide rollers are located above the glue liquid;

[0009] Based on the sequence of the sizing process, the small glue tank is arranged in front of the large glue tank.

[0010] Further, the number of lower guide rollers is one more than that of the upper guide rollers.

[0011] Further, two mounting plates are arranged in the large glue tank, and the lower guide rollers and the upper guide rollers are integrally mounted between the two mounting plates.

[0012] Further, the bottom position of the mounting plate is at the middle height position of the large glue tank.

[0013] Further, the surface of the mounting plate is coated with a demoulding layer.

[0014] Furthermore, a weight-reducing hole is prefabricated at the position where the guiding rollers are staggeredly installed on the mounting plate.

[0015] Furthermore, both ends of the lower guiding roller and the upper guiding roller are installed in the mounting plate through bearings.

[0016] Furthermore, a chromium plating coating with a thickness of not less than 5 μm is applied to the surfaces of the lower guiding roller and the upper guiding roller.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model discloses a sizing device for improving the impregnation property of adhesive tape. A small sizing tank and a sizing roller are added in front of the original sizing tank. A lower guiding roller is added at the bottom of the original sizing tank, and an upper guiding roller is installed directly above the middle position between the two lower guiding rollers at the bottom, arranged staggeredly. The passing mode of the impregnated paper is changed from the original U-shaped to a process of one-time single-sided sizing and two-time S-shaped sizing.

[0019] The impregnated paper contacts the liquid level of the sizing liquid on one side in the small sizing tank to form single-sided sizing, thereby exhausting part of the air in the impregnated paper, which is beneficial to the uniformity of sizing of the adhesive tape. During the second sizing, the lower guiding roller at the bottom of the large sizing tank is in the sizing liquid, and the upper guiding roller above is above the liquid level of the sizing liquid. This increases the impregnation time of the impregnated paper in the sizing tank and improves the sizing uniformity of the adhesive tape. Moreover, when the impregnated adhesive tape passes through the upper guiding roller above, an exhaust process can be further carried out in the air, improving the sizing uniformity of the adhesive tape, thereby solving the problems of surface mottling of the wound tube and slag falling during the processing process.

[0020] Furthermore, weight-reducing holes are prefabricated on the mounting plate to reduce the weight of the mounting plate and lower the cost.

[0021] Furthermore, chromium plating coatings are applied to the surfaces of the lower guiding roller and the upper guiding roller, which can form a hard and dense protective layer on the surface of the guiding roller, increase the hardness of the guiding roller, improve the abrasion resistance and durability, and effectively prevent scratches and wear on the surface of the guiding roller. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the original sizing tank structure;

[0023] Figure 2 is a schematic diagram of the structure of a sizing device for improving the impregnation property of adhesive tape according to the utility model;

[0024] Among them, 1. large sizing tank; 2. sizing liquid; 3. lower guiding roller; 4. transition roller; 5. mounting plate; 6. upper guiding roller; 7. sizing roller; 8. small sizing tank; 9. weight-reducing hole. Detailed Embodiment

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the following further detailed description will be given in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments.

[0026] The components described and shown in the accompanying drawings and embodiments of the present utility model can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present utility model provided in the following drawings is not intended to limit the scope of the present utility model to be protected, but only represents a selected embodiment of the present utility model. Based on the accompanying drawings and embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present utility model.

[0027] It should be noted that the terms "comprising", "including" or any other variants are intended to cover non-exclusive inclusion, so that a process, element, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent in the process, element, method, article or device.

[0028] The features and performance of the present utility model will be further described in detail in conjunction with the embodiments below.

[0029] As Figure 2 shown, the present utility model discloses a sizing device for improving the impregnation property of adhesive tape, including a small sizing tank 8 and a large sizing tank 1, and sizing liquid 2 is provided in both the small sizing tank 8 and the large sizing tank 1.

[0030] An impregnation roller 7 is provided above the small sizing tank 8, and the lower surface of the impregnation roller 7 just contacts the sizing liquid 2 in the small sizing tank 8, ensuring that the impregnated paper is only impregnated on one side in the small sizing tank 8, and part of the air in the impregnated paper can be excluded, which is beneficial to the uniformity of the sizing of the adhesive tape in the large sizing tank 1 later.

[0031] A plurality of lower guide rollers and a plurality of upper guide rollers 6 are provided in the large sizing tank 1. The lower guide rollers are located in the sizing liquid 2, and the upper guide rollers 6 are located above the sizing liquid 2. The upper guide rollers 6 are not wetted in the sizing liquid 2, so that when the impregnated adhesive tape passes through the upper guide rollers 6 above, it can be further exhausted in the air, improving the sizing uniformity of the adhesive tape, thereby solving the problems of surface blooming of the rolled tube and slag falling during the processing process.

[0032] The present utility model improves the original sizing tank structure as Figure 1 shown, and changes the way of passing the impregnated paper from the original U shape to a process of one-time single-sided sizing and two-time S-shaped sizing.

[0033] For the number of guide rollers in the large glue tank 1, it can be flexibly designed according to requirements. Specifically, the number of lower guide rollers is one more than that of the upper guide roller 6, which can ensure better guiding performance of the impregnated paper.

[0034] More preferably, two mounting plates 5 are installed on the large glue tank 1, and the upper guide roller 6 and the lower guide rollers are installed between the two mounting plates 5. This can integrate these multiple guide rollers on two plate bodies, facilitating installation and having better symmetry.

[0035] The mounting plates 5 are bolted to the frame, and the bottom of the mounting plates 5 is located at the middle height of the large glue tank 1 without contacting the bottom of the large glue tank 1.

[0036] Specifically, a transition roller 4 is also provided between the large glue tank 1 and the small glue tank 8, which can smoothly guide the impregnated paper that has been impregnated with glue out of the glue tank into the large glue tank 1.

[0037] More preferably, a release agent such as silicone oil or wax is coated on the surface of the mounting plates 5, which can effectively reduce the adhesion of epoxy resin on the mounting plates 5. However, it should be noted that the selection of the release agent should consider its impact on the performance of the cured epoxy resin.

[0038] More preferably, weight-reducing holes 9 are prefabricated at the positions where the guide rollers are installed on the mounting plates 5 in a staggered manner, which can reduce the weight of the mounting plates 5, save the material used for the mounting plates 5, and reduce costs.

[0039] More preferably, a chromium plating coating with a thickness of not less than 5 μm is coated on the surfaces of both the lower guide rollers and the upper guide roller 6. The chromium plating coating forms a hard and dense protective layer on the metal surface, which can increase the hardness of the guide rollers, improve their abrasion resistance and durability, and effectively prevent scratches and wear on the metal surface.

[0040] The chromium plating coating also has high chemical stability and corrosion resistance, which can effectively prevent the metal surface from being eroded by factors such as acids, alkalis, oxidation, and corrosion, thereby extending the service life of the metal.

[0041] The chromium plating coating also has good heat resistance. When heated below 500 °C, its gloss and hardness do not change significantly. This characteristic enables chromium-plated products to maintain stable performance in a certain high-temperature environment.

[0042] The chromium plating coating has a small friction coefficient, especially the dry friction coefficient, which is the lowest among all metals. Therefore, the chromium plating coating has good abrasion resistance and is suitable for components that need to withstand friction and wear.

[0043] The dipping device of the utility model utilizes the existing type of glue tank tooling, which is simple to install and operate. It solves the problems that the impregnated phenolic paper of 3021 has uneven impregnation, resulting in surface mottling of the rolled tubes and slag dropping during the processing. It greatly improves the production efficiency, saves energy consumption and reduces the raw material cost.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: still modifications or equivalent replacements can be made to the specific embodiments of the present invention, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. An impregnating device for improving the impregnability of adhesive tape, characterized in that, It includes a small glue tank (8) and a large glue tank (1), and both the small glue tank (8) and the large glue tank (1) are filled with glue liquid (2); Above the small glue tank (8), there is an impregnating roller (7) for single-sided impregnation of the impregnated paper; In the large glue tank (1), there are several lower guide rollers and several upper guide rollers (6). The lower guide rollers and the upper guide rollers (6) are arranged alternately. The lower guide rollers are located in the glue liquid (2), and the upper guide rollers (6) are located above the glue liquid (2); Based on the sequence of the impregnation process, the small glue tank (8) is arranged in front of the large glue tank (1).

2. The sizing device for improving the penetrability of adhesive tape according to claim 1, wherein The number of lower guide rollers is one more than that of the upper guide rollers (6).

3. The sizing device for improving the penetrability of the adhesive tape according to claim 1, characterized in that In the large glue tank (1), there are two mounting plates (5), and the lower guide rollers and the upper guide rollers (6) are integrally installed between the two mounting plates (5).

4. The dipping device for improving the penetrability of adhesive tape according to claim 3, characterized in that, The bottom position of the mounting plate (5) is at the middle height position of the large glue tank (1).

5. The sizing device for improving the impregnability of adhesive tape according to claim 1, wherein, The surface of the mounting plate (5) is coated with a demoulding layer.

6. The sizing device for improving the impregnability of adhesive tape according to claim 1, wherein At the position where the guide roller installation positions are staggered on the mounting plate (5), weight-reducing holes (9) are prefabricated.

7. An impregnating device for improving the impregnability of adhesive tape according to claim 1, characterized in that, Both ends of the lower guide rollers and the upper guide rollers (6) are installed in the mounting plate (5) through bearings.

8. The sizing device for improving the impregnability of adhesive tape according to claim 1, characterized in that, The surfaces of the lower guide rollers and the upper guide rollers (6) are coated with a chromium plating layer not less than 5μm.

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