Conveying belt and preparation method thereof

Abstract

The invention relates to the technical field of transmission belts, in particular to a conveying belt and a preparation method thereof.The preparation method specifically comprises the following steps that magnetic metal powder and auxiliaries are mixed according to a preset proportion and then placed in a high-speed stirrer, and a mixture is prepared after sufficient mixing; the mixture is subjected to extrusion molding after being subjected to banburying treatment; or degassing and filtering the mixture, and uniformly coating the mixture on the surface of the pretreated base cloth; and plasticizing and cooling to obtain the conveying belt. The situation that in the prior art, when the conveying belt is damaged or abraded, the conveying belt cannot be detected in time is overcome, the production efficiency and the product quality are improved, the product quality problem is avoided, and the device can be applied to the tobacco industry, the food industry and the medicine industry and is wide in market prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission belts, and in particular to a conveyor belt and a preparation method thereof. Background Art

[0002] The main function of the conveyor belt is to carry and transport materials. It plays a vital role in automated production, especially in the material transportation process of many industries such as tobacco, food, and medicine. The conveyor belt will wear during operation and is a common consumable material of transportation equipment. In general industrial fields, wear can be solved by replacing the conveyor belt. However, in the production fields of tobacco, food, medicine, electronic equipment, etc., if the worn belt residue falls into the production materials, it will not only affect the product quality, but may also cause food and drug safety accidents. The existing foreign matter removal or alarm equipment cannot accurately detect foreign matter such as ordinary conveyor belts, and needs to be improved. Summary of the Invention

[0003] Features and advantages of the invention are set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

[0004] In order to overcome the problems of the prior art, the present invention provides a method for preparing a conveyor belt, which specifically comprises the following steps: The magnetic metal powder and the additive are mixed in a preset ratio and placed in a high-speed mixer, and mixed thoroughly to obtain a mixture; The mixed material is subjected to internal kneading treatment and then extruded into a shape; or the mixed material is subjected to degassing and filtration and then evenly coated on the surface of a pretreated base fabric; and then plasticized and cooled to obtain a conveyor belt.

[0005] Preferably, the magnetic metal powder is iron powder or stainless steel powder.

[0006] Preferably, the metal powder has a size of 40-500 microns.

[0007] Preferably, the pretreatment includes at least one of anti-static treatment and dust removal treatment.

[0008] Preferably, the base fabric is at least one of polyester fabric, nylon fabric and canvas.

[0009] Preferably, the auxiliary agent includes at least one of glue, PVC, PU, ​​and TPE.

[0010] Preferably, the glue is one of polyurethane glue, silicone glue and epoxy resin glue.

[0011] Preferably, the mass ratio of the iron powder to the additive is 1:6.

[0012] Preferably, the present invention also provides a conveyor belt, which is prepared using the above-mentioned method for preparing a conveyor belt.

[0013] The beneficial effects of the present invention are as follows: when the conveyor belt prepared by the method provided by the present invention is worn, damaged or the like, the detection rate in the metal detection mechanism on the downstream side of the production line is as high as over 98%, which overcomes the problem in the prior art that when the conveyor belt is damaged or worn, it cannot be detected in time, thereby improving production efficiency and product quality, avoiding product quality problems, and can be applied to the tobacco, food and pharmaceutical industries, with broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples, and the advantages and implementation modes of the present invention will become more apparent. The contents shown in the accompanying drawings are only used to illustrate the present invention and do not constitute any limitation to the present invention. In the accompanying drawings: Figure 1 The present invention is a flow chart of a method for preparing a conveyor belt in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, the present invention provides a method for preparing a conveyor belt, which specifically includes the following steps: Magnetic metal powder and glue are mixed in a predetermined ratio and then placed in a high-speed blender. After thorough mixing, a mixed slurry is prepared. In this embodiment, the metal powder is iron powder with a size of 40-60 microns. The iron powder and glue are mixed in a mass ratio of 1:3 and then placed in a high-speed blender and stirred at 1500 rpm for 30 minutes. The glue is polyurethane glue. The stirred mixed slurry is degassed and filtered and then evenly coated on the surface of a base fabric that has been pre-treated for anti-static and dust removal; the base fabric is a polyester fabric with a coating thickness of 0.5 mm. The oven temperature is 150°C-250°C and the baking speed is 3 meters per minute. In this embodiment, the oven temperature is 150°C. Subsequently, after lamination, vulcanization, plasticization, and cooling, a 3 mm thick conveyor belt is obtained. The steps of lamination, vulcanization, plasticization, and cooling are all existing technologies and will not be repeated here.

[0018] Example 2

[0019] This embodiment provides a method for preparing a conveyor belt, which specifically includes the following steps: Magnetic metal powder and glue are mixed in a predetermined ratio and then placed in a high-speed blender. After thorough mixing, a mixed slurry is prepared. In this embodiment, the metal powder is magnetic stainless steel powder with a size of 80-100 microns. The stainless steel powder and glue are mixed in a mass ratio of 1:4 and then placed in a high-speed blender and stirred at 1800 rpm for 20 minutes. The glue is silicone glue. The stirred mixed slurry is degassed and filtered, and then evenly coated on the surface of the base fabric that has been pre-treated with anti-static and dust removal. The base fabric is nylon cloth, and the thickness of the coating on both sides is 2.3 mm. It is baked in an oven at 180°C and a speed of 3 meters per minute. Subsequently, it is laminated, vulcanized, plasticized, and cooled to produce a 5 mm thick conveyor belt.

[0020] Example 3

[0021] This embodiment provides a method for preparing a conveyor belt, which specifically includes the following steps: Magnetic metal powder and glue are mixed in a predetermined ratio and then placed in a high-speed blender. After thorough mixing, a mixed slurry is prepared. In this embodiment, the metal powder is iron powder with a size of 100-200 microns. The iron powder and glue are mixed in a mass ratio of 1:6 and then placed in a high-speed blender and stirred at 2000 rpm for 25 minutes. The glue is silicone glue. The stirred mixed slurry is degassed and filtered, and then evenly coated on the surface of the base fabric that has been pre-treated with anti-static and dust removal. The base fabric is canvas, and the thickness of the coating on both sides is 4 mm. It is baked in an oven at 200°C and a speed of 3 meters per minute. Subsequently, it is laminated, vulcanized, plasticized, and cooled to produce a 1 cm thick conveyor belt.

[0022] Example 4

[0023] This embodiment provides a method for preparing a conveyor belt, which specifically includes the following steps: Magnetic metal powder and glue are mixed in a predetermined ratio and then placed in a high-speed blender. After thorough mixing, a mixed slurry is prepared. In this embodiment, the metal powder is iron powder with a size of 200-500 microns. The iron powder and glue are mixed in a mass ratio of 1:5 and then placed in a high-speed blender and stirred at 3000 rpm for 15 minutes. The glue is polyurethane glue. The stirred mixed slurry is degassed and filtered, and then evenly coated on the surface of the base fabric that has been pre-treated with anti-static and dust removal. The base fabric is a polyester fabric with a single-sided coating thickness of 1.9 mm. It is baked in an oven at 250°C and a speed of 3 meters per minute. Subsequently, it is laminated, vulcanized, plasticized, and cooled to produce a 2-centimeter-thick conveyor belt.

[0024] Example 5

[0025] This embodiment provides a method for preparing a conveyor belt, which specifically includes the following steps: like Figure 1 As shown, 30-60 micron stainless steel powder and PVC are selected in a mass ratio of 1:4 and put into an internal mixer for internal mixing. They are premixed at a speed of 200 rpm for 5 minutes, and then mixed at a speed of 800 rpm for 20 minutes. The powder is then put into an extruder for extrusion molding. The feeding section temperature of the extruder is 150°C, the melting section temperature is 170°C, and the die temperature is 190°C. After cooling treatment, a 4 mm thick conveyor belt is made.

[0026] Example 6

[0027] This embodiment provides a method for preparing a conveyor belt, which specifically includes the following steps: Iron powder was mixed with PU and TPE powders at a mass ratio of 1:5, and a 4 mm thick conveyor belt was prepared using the same method as in Example 5.

[0028] 5g samples were cut from the conveyor belts prepared in Examples 1-6, marked, and crushed into powders of about 0.4-1 mm. Each group of powders was passed through the metal detection mechanism of the production line in turn. On the downstream side of the metal detection mechanism, the undetected powders in the 8 samples were absorbed and weighed, and the detection rate was calculated. The conveyor belts prepared in Examples 1-6 had a successful detection rate of more than 98.4% by the metal detection mechanism, and basically all of them were detected.

[0029] While preferred embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art may implement the present invention in a variety of variations without departing from the scope and spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to yield yet another embodiment. The foregoing are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent variations made using the present description and accompanying drawings are intended to fall within the scope of the present invention.

Claims

1. A method for preparing a conveyor belt, characterized in that: The specific steps include: The magnetic metal powder and the additive are mixed in a preset ratio and placed in a high-speed mixer, and mixed thoroughly to obtain a mixture; The mixed material is subjected to internal kneading treatment and then extruded into a shape; or the mixed material is subjected to degassing and filtration and then evenly coated on the surface of a pretreated base fabric; and then plasticized and cooled to obtain a conveyor belt.

2. The method for preparing a conveyor belt according to claim 1, wherein: The magnetic metal powder is iron powder or stainless steel powder.

3. The method for preparing a conveyor belt according to claim 1, characterized in that: The metal powder has a size of 40-500 microns.

4. The method for preparing a conveyor belt according to claim 1, wherein: The pretreatment includes at least one of anti-static treatment and dust removal treatment.

5. The method for preparing a conveyor belt according to claim 1, characterized in that: The base fabric is at least one of polyester fabric, nylon fabric and canvas.

6. The method for preparing a conveyor belt according to claim 1, characterized in that: The auxiliary agent includes at least one of glue, PVC, PU and TPE.

7. The method for preparing a conveyor belt according to claim 6, characterized in that: The glue is one of polyurethane glue, silicone glue and epoxy resin glue.

8. The method for preparing a conveyor belt according to claim 1, characterized in that: The mass ratio of the iron powder to the additive is 1:

6.

9. A conveyor belt, characterized in that: The conveyor belt is prepared by the method for preparing the conveyor belt according to any one of claims 1 to 8.

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