Heat-vulcanized wear-resistant ceramic roller blank

Abstract

A heat-vulcanized wear-resistant ceramic roller blank relates to the technical field of wear-resistant rollers, and adopts the technical scheme that the heat-vulcanized wear-resistant ceramic roller blank comprises a metal roller, the metal roller is sequentially provided with a bottom rubber layer and a surface rubber layer from inside to outside, a plurality of rubber strips are sequentially arranged on the surface of the surface rubber layer in the circumferential direction of the metal roller, and the rubber strips extend in the axial direction of the metal roller. A positioning groove is formed between every two adjacent rubber strips, a partition plate is inserted into each positioning groove, a plurality of ceramic pieces are sequentially arranged on the surfaces of the rubber strips in the length direction, a gap is formed between every two adjacent ceramic pieces on the same rubber strip, and the surfaces of the ceramic pieces are further wrapped with a pressurizing wrapping layer. When the roller blank body is subjected to heat vulcanization, the two adjacent partition plates, the pressurizing coating layer and the ceramic plate define a limiting space, the bottom rubber layer, the surface rubber layer and the rubber strip are vulcanized and expanded to fill the limiting space, the ceramic plate is wrapped in the limiting space, and the surface of the ceramic plate is exposed, so that the peeling strength between the ceramic plate and the metal roller is enhanced, and the service life of the roller is prolonged. And the ceramic chip is effectively prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of wear-resistant rollers, in particular to a hot-vulcanized wear-resistant ceramic roller embryo. Background Art

[0002] Belt conveyors, or belt conveyors, have the advantages of strong conveying capacity, long conveying distance, simple structure and easy maintenance, and are widely used. The roller is an important component of the belt conveyor, and its wear resistance directly affects the service life of the belt conveyor, especially when the conveying volume is large, the conveying speed is fast, and the working conditions are poor, the roller needs to have stronger wear resistance. In the prior art, wear-resistant ceramic sheets are usually bonded to the surface of the metal roller to improve the wear resistance, but during use, the ceramic sheet often falls off due to the low peeling strength, which affects the service life of the roller. Utility Model Content

[0003] Aiming at the problem of ceramic pieces falling off in the prior art solutions, the utility model provides a hot-vulcanized wear-resistant ceramic roller embryonic body.

[0004] The utility model provides the following technical solution: a hot-vulcanized wear-resistant ceramic roller blank, comprising a metal roller, wherein the metal roller is sequentially coated with a bottom rubber layer and a surface rubber layer from the inside to the outside, a plurality of rubber strips are sequentially arranged on the surface of the surface rubber layer along the circumferential direction of the metal roller, the rubber strips extend along the axial direction of the metal roller, positioning grooves are formed between adjacent rubber strips, partitions are inserted into the positioning grooves, a plurality of ceramic sheets are sequentially arranged on the surface of the rubber strip along the length direction, a spacing is provided between two adjacent ceramic sheets on the same rubber strip, and the surface of the ceramic sheet is also coated with a pressurized coating layer.

[0005] Preferably, the outer surfaces of the plurality of partitions are further wound with limiting rings, the plurality of limiting rings are sequentially arranged along the axial direction of the metal drum, and the limiting rings are located between two adjacent ceramic sheets.

[0006] Preferably, the outer wall of the partition is higher than the surface of the ceramic sheet or flush with the surface of the ceramic sheet.

[0007] Preferably, the base adhesive layer is thinner than the surface adhesive layer.

[0008] Preferably, the bottom adhesive layer is 2-3 mm thick, the surface adhesive layer is 12-20 mm thick, and the adhesive strip is 5 mm thick.

[0009] Preferably, the positioning groove has a width of 8 mm.

[0010] Preferably, the metal roller comprises a cylinder body, a rotating shaft and a plurality of connecting parts connected between the cylinder body and the rotating shaft.

[0011] Preferably, the surface of the ceramic sheet is provided with anti-slip patterns.

[0012] The beneficial effects of the utility model are: the ceramic sheet is positioned by the rubber strip, which is convenient for bonding, the manufacturing process of the roller blank is simple and convenient, the partition can be reused, and the cost is reduced; when the roller blank is hot-vulcanized, two adjacent partitions, the pressurized coating layer, and the ceramic sheet form a limited space, and the bottom rubber layer, the surface rubber layer, and the rubber strip expand and fill this limited space after vulcanization, forming a long strip of boss rubber structure extending along the axial direction of the metal roller, wrapping the ceramic sheet inside and exposing the surface of the ceramic sheet, so as to enhance the peeling strength between the ceramic sheet and the metal roller, and effectively prevent the ceramic sheet from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an axial cross-sectional view of an embodiment of a roller blank.

[0014] Figure 2 for Figure 1 Enlarged view of part A.

[0015] Figure 3 It is a radial cross-sectional view of an embodiment of a roller blank.

[0016] Figure 4 for Figure 3 Enlarged view of part B.

[0017] Figure 5 It is a schematic diagram of an embodiment of a finished roller.

[0018] Figure 6 This is a partial enlarged view of the radial section of an embodiment of a finished roller.

[0019] Figure numerals: 10, metal roller; 11, cylinder; 12, rotating shaft; 13, connecting part; 20, bottom rubber layer; 30, surface rubber layer; 40, rubber strip; 50, partition; 51, limiting ring; 60, ceramic sheet; 70, pressurized coating layer. DETAILED DESCRIPTION

[0020] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] The utility model provides Figure 1-4 A hot vulcanized wear-resistant ceramic roller blank is shown. The roller blank is an intermediate product, and the roller blank is hot vulcanized to form a finished roller product.

[0022] The roller blank comprises a metal roller 10, which is coated with a base rubber layer 20 and a surface rubber layer 30 from the inside to the outside, and a plurality of rubber strips 40 are sequentially arranged on the surface of the surface rubber layer 30 along the circumferential direction of the metal roller, and the rubber strips 40 extend along the axial direction of the metal roller 10. The metal roller 10 comprises a cylinder 11, a rotating shaft 12, and a plurality of connecting parts 13 connected between the cylinder 11 and the rotating shaft 12.

[0023] In this embodiment, the base rubber layer 20, the surface rubber layer 30, and the rubber strip 40 are all made of nitrile rubber, which has better adhesive properties. However, compared with the surface rubber layer 30 and the rubber strip 40, different reinforcing agents are added to the base rubber layer 20, so that the base rubber layer 20 has a higher hardness after vulcanization to improve the peeling strength between the rubber and the metal roller; the surface rubber layer 30 and the rubber strip 40 are made of the same material. The base rubber layer 20 is bonded to the outer surface of the metal roller 10 by an adhesive, and the base rubber layer 20, the surface rubber layer 30, and the rubber strip 40 are bonded in sequence by self-adhesion. The thickness of the base rubber layer 20 is 2~3 mm; the thickness of the surface rubber layer 30 is 12~20 mm, which is larger than the base rubber layer 20; the thickness of the rubber strip 40 is 5 mm. After vulcanization, the base rubber layer, the surface rubber layer and the rubber strip are integrated, the base rubber layer has a higher hardness, and the bonding effect and peeling strength between the metal roller and the surface rubber are strengthened, and the various performances of the surface rubber are optimized, especially the wear resistance is increased.

[0024] The surface of the rubber strip 40 is provided with a plurality of ceramic sheets 60 in sequence along the length direction. The ceramic sheets are wear-resistant ceramic sheets with a smooth bottom surface and anti-skid patterns on the surface to increase the anti-skid performance. The anti-skid patterns can be a plurality of convex points protruding from the surface of the ceramic sheet. The ceramic sheets 60 can be bonded to the rubber strip 40 by an adhesive.

[0025] A spacing is provided between two adjacent ceramic sheets 60 on the same rubber strip 40, and a positioning groove is formed between adjacent rubber strips 40, wherein a partition 50 is inserted into the positioning groove, and a pressurized coating layer 70 is also coated on the surface of the ceramic sheet 60 to press and fix the ceramic sheet 60 and the partition 50. The pressurized coating layer 70 can be a water cloth belt, which has shrinkage and has a pressurizing effect during the vulcanization process.

[0026] During hot vulcanization, two adjacent baffles, pressurized coating layers, and ceramic sheets form a limited space. After vulcanization, the surface rubber layer and rubber strip expand and fill this limited space, forming a long strip-shaped boss rubber structure extending along the axial direction of the metal roller, wrapping the ceramic sheet inside and exposing the surface of the ceramic sheet to enhance the peeling strength between the ceramic sheet and the metal roller, effectively preventing the ceramic sheet from falling off. After the vulcanization is completed, the pressurized coating layer and baffles are removed, and the finished roller product can be referred to Figure 5-6 There is a groove between the two long strip-shaped boss rubber structures. The particles mixed with the roller and the conveyor belt will fall into this groove and be discharged, which plays a cleaning role during the use of the roller.

[0027] Preferably, the partition 50 can be made of a steel strip with a thickness of 8 mm, and the outer surface of the partition 50 is higher than the surface of the ceramic sheet 60 or flush with the surface of the ceramic sheet 60 to prevent the rubber strip from deforming during the winding of the pressurized coating layer 70; the width of the positioning groove is also 8 mm, so that the positioning groove and the partition 50 are matched. A plurality of limiting rings 51 are also wound around the outer surface of the partitions 50 to prevent the partitions 50 at the bottom of the metal drum from falling. The limiting ring 51 can be made of iron wire or steel wire, and a plurality of limiting rings 51 are arranged in sequence along the axial direction of the metal drum 10, and the limiting ring 51 is located between two adjacent ceramic sheets 60.

[0028] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hot vulcanized wear-resistant ceramic roller body, characterized in that: It includes a metal roller, which is coated with a bottom rubber layer and a surface rubber layer in sequence from the inside to the outside. A plurality of rubber strips are arranged in sequence on the surface of the surface rubber layer along the circumferential direction of the metal roller. The rubber strips extend in the axial direction of the metal roller. Positioning grooves are formed between adjacent rubber strips. Partitions are inserted in the positioning grooves. A plurality of ceramic sheets are arranged in sequence on the surface of the rubber strip along the length direction. A spacing is provided between two adjacent ceramic sheets on the same rubber strip. The surface of the ceramic sheet is also coated with a pressurized coating layer.

2. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The outer surfaces of the plurality of partitions are also wound with limiting rings, and the plurality of limiting rings are arranged in sequence along the axial direction of the metal roller, and the limiting rings are located between two adjacent ceramic sheets.

3. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The outer wall of the partition is higher than the surface of the ceramic sheet or is flush with the surface of the ceramic sheet.

4. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The bottom adhesive layer is thinner than the top adhesive layer.

5. The hot-vulcanized wear-resistant ceramic roller blank according to claim 4, characterized in that: The thickness of the bottom adhesive layer is 2-3 mm, the thickness of the surface adhesive layer is 12-20 mm, and the thickness of the adhesive strip is 5 mm.

6. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The width of the positioning groove is 8 mm.

7. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The metal roller comprises a cylinder body, a rotating shaft and a plurality of connecting parts connected between the cylinder body and the rotating shaft.

8. The hot-vulcanized wear-resistant ceramic roller blank according to claim 1, characterized in that: The surface of the ceramic sheet is provided with anti-slip patterns.

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