Liquid squeezing roller

Abstract

The utility model belongs to the technical field of copper foil production equipment, and discloses a liquid squeezing roller which comprises a shaft core and a rubber layer wrapping the shaft core, the rubber layer is made of polyurethane rubber, and the hardness of the polyurethane rubber is Ha60-80. The thickness of the polyurethane rubber ranges from 50 mm to 100 mm; the shaft core is an iron shaft core, the diameter of the iron shaft core ranges from 120 mm to 150 mm, and the length of the iron shaft core ranges from 1400 mm to 1600 mm. And the iron shaft core is made of a 316 stainless steel material. According to the liquid squeezing roller, the rubber layer made of a specific material is used as an axis wrapping layer of the liquid squeezing roller, so that the wear resistance of the liquid squeezing roller is improved under the condition that the liquid squeezing rate of the liquid squeezing roller is effectively maintained, and the phenomenon that rubber powder falls off and is adhered to the surface of a raw foil due to slipping is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper foil production equipment, and particularly relates to a squeezing roller. Background Art

[0002] Copper foil production mainly consists of an electrolyte composed of copper sulfate, sulfuric acid, etc. The raw foil is manufactured by the roller continuous electrolysis method. The raw foil undergoes processes such as roughening treatment, slitting, and packaging to produce electrolytic copper foil. The raw foil is manufactured by a raw foil machine, and the main equipment of the raw foil machine consists of a cathode roller, an anode tank, a rectifier, a liquid supply system, a squeezing roller, and an air drying system.

[0003] After the electrolyte is filtered by the filtration system, it is sent to the anode tank. Certain additives are mixed into the anode tank. The anode tank is connected to the positive pole of the rectifier, and the cathode roller is connected to the negative pole of the rectifier. Under the action of current, a layer of copper is deposited on the cathode roller. According to the rotation speed of the cathode roller, raw foils of different thicknesses are produced. The copper foil deposited on the cathode roller is washed with pure water, squeezed by the squeezing roller to remove the remaining water, dried by hot air blowing, and the raw foil is wound by a steel shaft.

[0004] The existing squeezing roller is made of chloroprene rubber. It consists of an iron shaft core, and chloroprene rubber is wrapped around the shaft core. The rubber is vulcanized to make the rubber and the shaft core in close contact. Finally, it is polished. The chloroprene rubber has poor wear resistance, and after long-term rotation, rubber powder is likely to appear on the surface.

[0005] Through multiple analyses and experience summaries, technical personnel have obtained that the squeezing roller contacts the surface of the raw foil to squeeze out the remaining water on the surface of the raw foil. The cathode roller drives the squeezing roller to rotate. Usually, the diameter of the squeezing roller is 120 mm, the hardness of its chloroprene rubber is Ha80 - 100, and the thickness of the chloroprene rubber is 40 mm. It is fixed on both sides of the squeezing roller with screws, and a certain force is applied to make the squeezing roller and the cathode stock in close contact. Since there is water on the surface of the raw foil, during the rotation process of the cathode roller driving the squeezing roller, although the squeezing roller is tightly fixed with screws, "slipping" problems still occur during the rotation process, and rubber powder will remain on the surface of the raw foil. Since the rubber powder is not conductive, such a situation will cause the subsequent process to be unable to be roughened, resulting in the scrapping of the raw foil.

[0006] Chinese Patent No. 200920090230.6 discloses a squeezing roller, which includes a mandrel, a roller barrel is fixedly arranged outside the mandrel, and a rubber coating layer is sleeved outside the roller barrel. The hardness of the rubber coating layer is less than Ha75, and the rubber coating layer is a rubber layer.

[0007] The above patent provides a rubber layer with a lower hardness than chloroprene rubber. The technical problem it solves is that through a rubber layer with an appropriate hardness, the squeezing rate of the squeezing roller is greatly improved, and the squeezing rate can reach more than 90%.

[0008] However, the above patent does not give any technical inspiration on how to solve the problem that rubber powder easily appears in the rubber layer and remains on the surface of the acoustic wave, nor does it conduct research and improvement on the technical problem of the appearance of rubber powder. The problem of rubber powder generated on the squeezing roller still needs to be studied and solved. Summary of the Invention

[0009] The purpose of the present utility model is to provide a squeezing roller to solve the problem that rubber powder on the existing squeezing roller easily falls off and adheres to the surface of the raw foil, affecting the quality of the raw foil product and resulting in the scrapping of the raw foil.

[0010] To achieve the above purpose, the present utility model provides the following technical solutions:

[0011] A squeezing roller includes a shaft core and a rubber layer coated on the shaft core. The rubber layer is polyurethane rubber, and the hardness of the polyurethane rubber is Ha60 - 80.

[0012] Preferably, the hardness of the polyurethane rubber is Ha75 - 80.

[0013] More preferably, the hardness of the polyurethane rubber is Ha78.

[0014] In the above squeezing roller, the thickness of the polyurethane rubber is 50 - 100mm.

[0015] In the above squeezing roller, the shaft core is an iron shaft core, the diameter of the iron shaft core is 120 - 150mm, and the length is 1400 - 1600mm.

[0016] In the above squeezing roller, the iron shaft core is made of 316 stainless steel material.

[0017] Compared with the prior art, the beneficial effect of the present utility model is that by using a rubber layer of a specific material as the core coating layer of the squeezing roller, the wear resistance of the squeezing roller is increased while effectively maintaining the liquid squeezing rate of the squeezing roller, preventing the phenomenon that rubber powder falls off and adheres to the surface of the raw foil due to slippage. Brief Description of the Drawings

[0018] Figure 1 is the right view of the embodiment of the present utility model;

[0019] Figure 2 is the front view of the embodiment of the present utility model;

[0020] Figure 3 is a 1500 - fold magnified electron microscope image of the powder shedding after using chloroprene rubber as the rubber layer of the squeezing roller;

[0021] Figure 4 is a 1500 - fold magnified electron microscope image of the rubber layer after use in the embodiment of the present utility model.

[0022] In the figure: 1. Shaft core; 2. Rubber layer Specific implementation manner

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment

[0025] Please refer to Figure 1-2 , the present invention provides a technical solution: a squeezing roller, including a shaft core 1 and a rubber layer 2 coated on the shaft core 1. The rubber layer 2 is polyurethane rubber, and the hardness of the polyurethane rubber is Ha60 - 80.

[0026] In practical applications, polyurethane rubber with a specific hardness can effectively meet the squeezing requirements of the squeezing roller, and improve the wear resistance of the rubber layer 2. The slipping phenomenon of the squeezing roller during the squeezing process is reduced, rubber powder no longer appears on the surface of the squeezing roller, the quality of the raw foil is further improved, and the scrap rate of the raw foil is reduced.

[0027] In this embodiment, polyurethane rubber material is required as the rubber layer 2 because polyurethane rubber has high wear resistance, cushioning and shock absorption properties, and corrosion resistance. At the same time, it is found that a hardness of Ha60 - 80 can effectively meet the wear resistance requirements of the rubber layer 2, avoid slipping of the squeezing roller, and effectively avoid the generation of rubber powder. When the hardness of the polyurethane rubber > Ha80, the hardness of the rubber layer 2 is too high, resulting in a decrease in the elasticity of the squeezing roller, which will lead to a decrease in the squeezing rate. Moreover, the friction force of the polyurethane rubber will increase significantly, making the contact between the squeezing roller and the raw foil less smooth, and there is a certain probability of causing the raw foil to break. When the hardness of the polyurethane rubber < Ha60, the wear resistance of the rubber layer 2 drops significantly, and it cannot effectively reduce the slipping frequency of the squeezing roller during the squeezing process, and the scrap rate of the raw foil will increase.

[0028] As Figure 3 shown, after using chloroprene rubber with a hardness of Ha75 as the rubber layer of the squeezing roller in the prior art, powder shedding occurs (the red circle part in the figure);

[0029] As Figure 4 shown, after using the rubber layer of the embodiment of the present invention for the same time, there is no Figure 3 powder shedding phenomenon of the rubber powder in

[0030] In this embodiment, the hardness of the polyurethane rubber is Ha78.

[0031] Further, in order to prevent the extrusion roller from being bent under pressure, resulting in uneven stress on the raw foil, the thickness of the polyurethane rubber is 50 - 100 mm.

[0032] In this embodiment, the thickness of the polyurethane rubber is 70 mm. Its advantage is that when the liquid extrusion roller extrudes the raw foil, the force received by the liquid extrusion roller can be fully buffered by the rubber layer 2 formed by the polyurethane rubber, avoiding the bending of the shaft core 1 and affecting the liquid extrusion quality of the liquid extrusion roller.

[0033] Furthermore, the shaft core 1 is an iron shaft core, the diameter of the iron shaft core is 120 - 150 mm, and the length is 1400 - 1600 mm. The purpose is to effectively increase the contact area between the raw foil and the rubber layer 2 through the diameter settings of the shaft core 1 and the rubber layer 2, and further prevent the occurrence of slipping.

[0034] In this embodiment, the diameter of the iron shaft core is 130 mm and the length is 1400 mm.

[0035] In order to further reduce the probability of the shaft core 1 being bent and deformed, as a preferred solution of this embodiment, the iron shaft core is made of 316 stainless steel material.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A squeezing roller, comprising a shaft core and a rubber layer coated on the shaft core, characterized in that, The rubber layer is polyurethane rubber, and the hardness of the polyurethane rubber is Ha78.

2. The squeeze roller according to claim 1, wherein The thickness of the polyurethane rubber is 50 - 100 mm.

3. The squeezing roller according to claim 1, wherein The shaft core is an iron shaft core, the diameter of the iron shaft core is 120 - 150 mm, and the length is 1400 - 1600 mm.

4. The squeezing roller according to claim 3, characterized in that, The iron shaft core is made of 316 stainless steel material.

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