Ceramic enamel wire rubber v belt and its preparation method

Abstract

The present application relates to the technical field of transmission belt, in particular to a kind of ceramic glaze line rubber V belt and its preparation method.The present application is optimized by optimizing the material of skeleton wire, high-elasticity nylon material is used, the tensile modulus of V belt is reduced, so that the same group of belt is more easily tensioned to the same length level;At the same time, wear-resistant and high-temperature-resistant EPDM rubber plate is used on the top of V belt, to improve the wear resistance and service life of the top, thereby meeting the demand of ceramic glaze line rubber V belt.

Description

Technical Field

[0001] This invention relates to the field of transmission belt technology, specifically to a rubber V-belt for ceramic glaze lines and its preparation method. Background Technology

[0002] Rubber V-belt drives are an important form of mechanical transmission. The transmission principle relies on the friction generated by the compression between the two sides of the rubber V-belt and the sides of the pulley to drive the driven equipment. The structure of a typical fabric-covered V-belt consists of a skeleton cord, compression rubber, stretching rubber, cushioning rubber, and an outer fabric covering.

[0003] Ceramic glaze lines are commonly used conveying devices in the production of ceramic products. Rubber V-belts are needed as the conveying medium for material transfer between processes such as pressing, drying, glazing / spraying, firing, and cooling. Their essential function is that of a conveyor belt.

[0004] Since ordinary V-belts are generally used for power transmission, their skeleton materials are designed for transmission, with a high tensile modulus and large length deviations. Under significant installation tension, they can be stretched and tightened without affecting use. However, in glaze conveying, the installation tension is lower, and the length deviation between the V-belt ends is larger. This can easily cause V-belt slippage during operation, leading to inconsistent conveying and potentially causing ceramic product breakage. Furthermore, the friction between the top surface of the V-belt and the ceramic tiles during conveying causes faster wear on the top surface. Combined with the high firing temperature of the ceramic tiles, the wear resistance of the rubber is further reduced at high temperatures, resulting in a shorter belt lifespan. Summary of the Invention

[0005] This invention aims to provide a rubber V-belt for ceramic glaze lines and its preparation method, the specific solution of which is as follows:

[0006] A rubber V-belt for ceramic glaze lines includes a base rubber layer and a cord layer, both of which are covered with a fabric covering. The fabric covering has an abrasion-resistant layer. The abrasion-resistant layer comprises the following components by weight: 90-120 parts ethylene propylene rubber; 2-6 parts Teflon powder; 1-2 parts surfactant; 30-60 parts carbon black; 4-10 parts silica; 4-8 parts processing oil; 8-12 parts zinc methacrylate; 2-4 parts vulcanizing agent; and 2-4 parts activator.

[0007] The base layer comprises the following components by weight: 60-80 parts natural rubber, 10-20 parts styrene-butadiene rubber, 10-20 parts butadiene rubber, 30-50 parts carbon black 330, 20-30 parts carbon black 550, 8-10 parts zinc oxide, 2-3 parts stearic acid, 2-4 parts antioxidant, 1.5-2.5 parts vulcanizing agent, and 1.5-2.0 parts accelerator.

[0008] A method for preparing a rubber V-belt for ceramic glaze lines includes the following steps:

[0009] Preparation phase:

[0010] (1) Formulation preparation: The wear-resistant layer formulation uses 90-120 parts of ethylene propylene rubber. The rubber is mixed using a meshing internal mixer. Ethylene propylene rubber and Teflon powder are added in sequence. When the mixing temperature reaches 115-125℃, activator, carbon black, silica and processing oil are added. When the mixing temperature reaches 160-170℃, the rubber is discharged and cooled to room temperature. When the final mixing is carried out, the primary rubber, zinc methacrylate and vulcanizing agent are added. When the mixing temperature reaches 105-115℃, the material is discharged and sheeted for use.

[0011] (2) Rubber preparation: Use a calender to produce 3-4mm rubber sheets to make wear-resistant layer rubber blanks; use a calender to produce 0.5mm thin rubber sheets for buffer rubber, roll them up and set aside; use a cold-feed extrusion method to extrude rubber strips of the corresponding size, cool them to room temperature, and then wind them into rolls for use.

[0012] (3) Preparation of the cord layer: Using the winding process of the molding machine, the molding is expanded to the reference length of the belt. The buffer rubber is wound on the molding drum in 4 layers, the skeleton material is wound on the molding drum, and finally the buffer rubber is wound on the cord and divided into ring-shaped strips of fixed width to obtain the cord blank for use.

[0013] (4) Fabric preparation: The rubber is heated and then attached to the surface of the canvas by calendering process of the calender. The rubber and the canvas are tightly bonded by the action of pressure rollers. After calendering, the fabric strips of the corresponding width are cut out for later use.

[0014] Molding stage

[0015] (1) Rubber coating: The blank and the base rubber are combined by the rubber coating machine. The uncured rubber itself is used to make it fully bonded. Then, the roots of the V-belt are cut apart with a cutter to make a rubber blank for later use.

[0016] (2) Covering with fabric: The rubber blank and the covering fabric are combined by the covering fabric machine. The covering fabric starts from the bottom of the rubber blank and wraps around it once, ending at the bottom of the rubber blank. The two fabric edges overlap each other. After completing two layers of covering fabric, a strip blank is made.

[0017] (3) Vulcanization: The strip blank is vulcanized into a finished product by a flat vulcanizing machine. The strip blank is installed in the order of the grooved rollers. After the strip blank is tensioned, the wear-resistant rubber layer is laid on the top of the belt of the upper and lower molds. The mold is closed. Under the action of pressure (0.6Mpa) and temperature (155℃), after a certain period of time, one vulcanization is completed. After the mold is opened, the strip blank is rotated and the above actions are repeated until the vulcanization is completely completed.

[0018] The skeleton material in step (3) of the preparation stage is nylon rope.

[0019] In the preparation stage step (4), the covering cloth used is wide-angle canvas, which is a warp and weft fabric made of polyester and cotton blended in a specific ratio, with the warp and weft angle between 110-120°.

[0020] The pressure in step (3) of the molding stage is 0.6 MPa.

[0021] The temperature in step (3) of the molding stage is 155℃.

[0022] The molding stage step (3) has a time limit of 25 minutes.

[0023] This invention optimizes the material of the skeleton cord by using high-elasticity nylon to reduce the tensile modulus of the V-belt, making it easier to tension belts in the same group to the same length. Simultaneously, a wear-resistant and high-temperature-resistant EPDM rubber sheet is used at the top of the V-belt to improve its wear life. This meets the requirements for rubber V-belts used in ceramic glaze production. Attached Figure Description

[0024] Figure 1 A schematic diagram of the structure of a rubber V-belt for ceramic glaze lines according to the present invention;

[0025] The components are labeled as follows: 1. Abrasion-resistant layer; 2. Cord layer; 3. Base adhesive layer; 4. Fabric covering. Detailed Implementation

[0026] A rubber V-belt for ceramic glaze lines includes a base rubber layer 3 and a cord layer 2. The base rubber layer 3 and the cord layer 2 are covered with a fabric covering. The fabric covering 4 of the base rubber layer has a wear-resistant layer 1. The wear-resistant layer 1 of the base rubber layer has the following components by weight: 90-120 parts of ethylene propylene rubber; 2-6 parts of Teflon powder; 1-2 parts of surfactant; 30-60 parts of carbon black; 4-10 parts of silica; 4-8 parts of processing oil; 8-12 parts of zinc methacrylate; 2-4 parts of vulcanizing agent; and 2-4 parts of activator.

[0027] The base rubber layer 3 comprises the following components by weight: 60-80 parts natural rubber, 10-20 parts styrene-butadiene rubber, 10-20 parts butadiene rubber, 30-50 parts carbon black 330, 20-30 parts carbon black 550, 8-10 parts zinc oxide, 2-3 parts stearic acid, 2-4 parts antioxidant, 1.5-2.5 parts vulcanizing agent, and 1.5-2.0 parts accelerator.

[0028] A method for preparing a rubber V-belt for ceramic glaze lines with a base adhesive layer includes the following steps:

[0029] Preparation phase:

[0030] (1) Formulation preparation: The abrasion layer 1 formulation uses 90-120 parts of ethylene propylene rubber. The rubber is mixed using a meshing internal mixer. Ethylene propylene rubber and Teflon powder are added in sequence. When the mixing temperature reaches 115-125℃, activator, carbon black, silica and processing oil are added. When the mixing temperature reaches 160-170℃, the rubber is discharged and cooled to room temperature. When the final mixing is carried out, the primary rubber, zinc methacrylate and vulcanizing agent are added. When the mixing temperature reaches 105-115℃, the material is discharged and sheeted for use.

[0031] (2) Rubber preparation: Use a calender to produce 3-4mm rubber sheets to make wear-resistant layer 1 rubber blanks; use a calender to produce 0.5mm thin rubber sheets for buffer rubber (for rope layer 2), roll them up and set aside; use a cold feed extrusion method to extrude rubber strips of the corresponding size, cool them to room temperature, and then wind them into rolls and set aside.

[0032] (3) Preparation of the second layer of cord: Using the winding process of the molding machine, the molding is expanded to the reference length of the belt. The buffer rubber is wound on the molding drum in 4 layers, and then the skeleton (nylon cord) material is wound on the molding drum. Finally, 1 layer of buffer rubber is wound on the cord and divided into ring-shaped strips of fixed width to obtain the cord blank for use.

[0033] (4) Preparation of the fabric: The rubber is heated and then attached to the surface of the canvas by the calendering process of the calender. The rubber (a separate rubber, but this is existing technology, so it will not be described in detail) is tightly bonded to the canvas by the action of the pressure roller. After calendering, the fabric strips of the corresponding width are cut out for later use.

[0034] Molding stage

[0035] (1) Rubber coating: The blank and the base rubber are combined by the rubber coating machine. The uncured rubber itself is used to make it fully bonded. Then, the roots of the V-belt are cut apart with a cutter to make a rubber blank for later use.

[0036] (2) Covering with cloth: The rubber blank and the covering cloth 4 are combined by the covering cloth machine. The covering cloth 4 starts from the bottom of the rubber blank and wraps around it once, ending at the bottom of the rubber blank. The two cloth edges overlap each other. After completing two layers of covering cloth 4, a strip blank is made.

[0037] (3) Vulcanization: The strip blank is vulcanized into a finished product by a flat vulcanizing machine. The strip blank is installed in the order of the grooved rollers. After the strip blank is tensioned, the wear-resistant layer 1 is laid on the top of the belt of the upper and lower templates. The mold is closed. Under the action of pressure (0.6Mpa) and temperature (155℃), one vulcanization is completed after 25 minutes. After the mold is opened, the strip blank is rotated and the above actions are repeated until the vulcanization is completely completed.

[0038] In the preparation stage of the base layer adhesive material, step (4) the covering cloth is a wide-angle canvas, which is a warp and weft fabric made of polyester and cotton blended in a specific ratio, with the warp and weft angle between 110-120°.

[0039] This invention optimizes the material of the skeleton cord by using high-elasticity nylon to reduce the tensile modulus of the V-belt, making it easier to tension belts in the same group to the same length. Simultaneously, a wear-resistant and high-temperature-resistant EPDM rubber sheet is used at the top of the V-belt to improve its wear life. This meets the requirements for rubber V-belts used in ceramic glaze production.

[0040] The above content describes the technical principles, beneficial effects, and features of the present invention. It should be noted that the above-mentioned base adhesive is only a preferred embodiment of the present invention, but is not limited to the above embodiments. For those skilled in the art, some improvements and optimizations can be made without departing from the content of the present invention, and these should be considered to fall within the protection scope of the present invention.

Claims

1. A method for preparing a rubber V-belt for ceramic glaze lines, characterized in that, Includes the following steps: Preparation phase: (1) Formulation preparation: The wear-resistant layer formulation uses 90-120 parts of ethylene propylene rubber. The rubber is mixed using a meshing internal mixer. Ethylene propylene rubber and Teflon powder are added in sequence. When the mixing temperature reaches 115-125℃, activator, carbon black, silica and processing oil are added. When the mixing temperature reaches 160-170℃, the rubber is discharged and cooled to room temperature. When the final mixing is carried out, the primary rubber, zinc methacrylate and vulcanizing agent are added. When the mixing temperature reaches 105-115℃, the material is discharged and sheeted for use. (2) Rubber preparation: Use a calender to produce 3-4mm rubber sheets to make wear-resistant layer rubber blanks; use a calender to produce 0.5mm thin rubber sheets for buffer rubber, roll them up and set aside; use a cold-feed extrusion method to extrude rubber strips of the corresponding size, cool them to room temperature, and then wind them into rolls for use. (3) Preparation of the cord layer: Using the winding process of the molding machine, the molding is expanded to the reference length of the belt. The buffer rubber is wound on the molding drum in 4 layers, the skeleton material is then wound on the molding drum, and finally the buffer rubber is wound on the cord and divided into ring-shaped strips of fixed width to obtain the cord blank for use. (4) Fabric preparation: The rubber is heated and then attached to the surface of the canvas by the calendering process of the calender. The rubber and the canvas are tightly bonded by the action of the pressure roller. After calendering, the fabric strips of the corresponding width are cut out for later use. Molding stage (1) Rubber coating: The blank and the base rubber are combined by the rubber coating machine. The uncured rubber itself is used to make it fully bonded. Then, the roots of the V-belt are cut apart with a cutter to make a rubber blank for later use. (2) Covering with fabric: The fabric is combined with the rubber blank by the covering machine. The covering starts from the bottom of the rubber blank and wraps around it once. It ends at the bottom of the rubber blank. The two sides of the fabric overlap each other. After completing the two layers of covering, the strip blank is made. (3) Vulcanization: The strip blank is vulcanized into a finished product by a flat vulcanizing machine. The strip blank is installed in the order of the grooved rollers. After the strip blank is tensioned, the wear-resistant rubber layer is laid on the top of the belt of the upper and lower templates. The mold is closed. Under the action of pressure and temperature, after a certain time, one vulcanization is completed. After the mold is opened, the strip blank is rotated and the above steps are repeated until the vulcanization is completed. The ceramic glaze line uses a rubber V-belt, comprising a base rubber layer and a cord layer, both covered with a fabric covering, which has an abrasion-resistant layer. The abrasion-resistant layer comprises the following components by weight: 90-120 parts ethylene propylene rubber; 2-6 parts Teflon powder; 1-2 parts surfactant; 30-60 parts carbon black; 4-10 parts silica; 4-8 parts processing oil; 8-12 parts zinc methacrylate; 2-4 parts vulcanizing agent; and 2-4 parts activator. The base rubber layer comprises the following components by weight: 60-80 parts natural rubber; 10-20 parts styrene-butadiene rubber; 10-20 parts butadiene rubber; 30-50 parts carbon black 330; 20-30 parts carbon black 550; 8-10 parts zinc oxide; 2-3 parts stearic acid; 2-4 parts antioxidant; 1.5-2.5 parts vulcanizing agent; and 1.5-2.0 parts accelerator.

2. The method for preparing a rubber V-belt for ceramic glaze lines as described in claim 1, characterized in that: The skeleton material in step (3) of the preparation stage is nylon rope.

3. The method for preparing a rubber V-belt for ceramic glaze lines as described in claim 1, characterized in that: In the preparation stage step (4), the covering cloth used is wide-angle canvas, which is a warp and weft fabric made of polyester and cotton in a certain proportion, with the warp and weft angle between 110-120°.

4. The method for preparing a rubber V-belt for ceramic glaze lines as described in claim 1, characterized in that: The pressure in step (3) of the molding stage is 0.6 MPa.

5. The method for preparing a rubber V-belt for ceramic glaze lines as described in claim 1, characterized in that: The temperature in step (3) of the molding stage is 155℃.

6. The method for preparing a rubber V-belt for ceramic glaze lines as described in claim 1, characterized in that: The molding stage step (3) has a time limit of 25 minutes.

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