A conveying belt applied to a waste metal sorting machine

Abstract

The utility model provides a kind of conveying belt applied to waste metal sorting machine, it is related to waste metal sorting equipment accessory field, to solve the problem that existing smooth surface conveying belt cannot inhibit cylindrical, globular material rolling. The conveying belt includes baseband, rough surface structure, driving end connecting structure and driven end connecting structure;Rough surface structure is fixed on the outer surface of baseband, for increasing the friction with material;Driving end and driven end connecting structure are respectively with the driving, driven cylinder detachable connection of sorting machine, realize stable operation;Baseband is provided with the layered structure of base material layer+reinforcing layer, edge can also be provided with undulating skirt. The utility model can inhibit material rolling, improve sorting precision, prolong the life of conveying belt, adapt to a variety of waste metal sorting scene.

Description

Technical Field

[0001] This utility model relates to the technical field of accessories for waste metal sorting equipment, and in particular to a conveyor belt used in waste metal sorting machines. Background Technology

[0002] In the scrap metal recycling industry chain, scrap metal sorting machines are the core equipment for separating metals of different materials (such as separating ferromagnetic metals from non-ferromagnetic metals). Their working process relies on conveyor belts to stably transport the materials to be sorted to functional modules such as magnetic separation and eddy current separation.

[0003] Currently, most sorting machines in the industry use smooth conveyor belts, which have a smooth surface and a low coefficient of friction (usually between 0.1 and 0.2). When conveying columnar scrap metal (such as scrap bolts and short sections of reinforcing bars) or spherical scrap metal (such as bearing steel balls and metal shot), the material is prone to displacement due to the following problems: When the conveyor belt starts, stops, or changes speed, the inertial force of the material is greater than the frictional force of the smooth surface, causing the material to roll along the conveying direction; When the conveyor belt tilts slightly due to frame vibration or roller installation error, the material is prone to sliding and shifting along the width direction. The light surface has insufficient clamping force for irregular materials, which can easily cause the materials to flip over, resulting in the material's center of gravity shifting and detaching from the preset sorting channel.

[0004] The aforementioned problems directly cause materials to fail to accurately enter the detection area of ​​the sorting module, leading to "missed detection" (small-sized materials are not sorted) or "misjudgment" (non-target materials are mixed into the target material collection area), ultimately resulting in decreased sorting accuracy and efficiency, while increasing the cost of subsequent manual secondary sorting, and failing to meet the needs of large-scale scrap metal recycling. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a conveyor belt for use in waste metal sorting machines, solving the problem that existing smooth conveyor belts cannot suppress the rolling of columnar and spherical materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A conveyor belt for use in a scrap metal sorting machine includes a base belt, a textured surface structure, a drive end connection structure, and a driven end connection structure. The connection relationships and functions of each component are as follows: Base belt: It is a long strip and serves as the main support component of the conveyor belt. Its length and width are adapted to the roller spacing and sorting channel width of the waste metal sorting machine. Textured surface structure: Fixedly set on the outer surface of the base belt, that is, the side that is in direct contact with the material. By increasing the contact area and friction coefficient with the material, it inhibits the rolling of columnar or spherical materials. Drive end connection structure: integrally formed or detachably fixed to one end of the base belt, used for detachable connection with the drive roller of the scrap metal sorting machine, such as bolt connection or snap connection, to transmit driving force to drive the conveyor belt to circulate. Driven end connection structure: integrally formed or detachably fixed to the other end of the base belt, used for detachable connection with the driven roller of the waste metal sorting machine, working with the drive roller to achieve stable operation of the conveyor belt, and at the same time the tension of the base belt can be adjusted by the tensioning component (such as tensioning screw) to avoid slippage.

[0007] Based on the above basic solution, and considering the needs of different usage scenarios, each component was further optimized: The specific forms of textured surface: Form 1: The textured surface is made of yarn integrally molded on the outer surface of the baseband. The yarn is evenly distributed along the length or width of the baseband. The yarn protrudes from the surface of the baseband and its length is controlled to be 1mm-2mm. If the length is too short, the friction will be insufficient, and if it is too long, it will easily fall off due to the extrusion of metal materials. The material is the same as the baseband, such as nitrile rubber. It is integrally molded with the baseband through a vulcanization process to ensure the connection strength.

[0008] Form 2: The base strip has through holes arranged in a matrix array evenly along its length and width, with the hole diameter matching the textured surface structure. The textured surface structure is a column made of the same material as the base strip. One end of the column passes through the through hole and is fixed to the base strip, such as by interference fit or vulcanization. The other end protrudes from the outer surface of the base strip. Several yarn bodies are integrally formed at the protruding end of the column, with the same material as the column, to further increase friction. Both ends of the column are also integrally formed with a stop body with a diameter slightly larger than the diameter of the column. One stop body is located on the outer surface of the base strip, and the other stop body is located on the inner surface of the base strip, to prevent the column body from moving axially along the through hole and to ensure structural stability.

[0009] Form 3: The textured surface is an integrally formed raised pattern on the outer surface of the baseband. The pattern type can be diamond pattern, serrated pattern or arrow pattern. The arrow pattern faces the conveying direction, which can further guide the material to move in the preset direction. The height of the raised pattern is 0.3mm-0.5mm. If the height is too low, the anti-slip effect will be weak. If it is too high, small metal debris will be easily stuck. The height direction is perpendicular to the outer surface of the baseband and is integrally formed with the baseband through a molding process.

[0010] The base belt's reinforced structure: The base belt adopts a layered composite structure, including an inner reinforcing layer and an outer base layer. The base layer is made of nitrile rubber or neoprene rubber, possessing high wear resistance, oil resistance, and resistance to metal debris corrosion, with a thickness of 3mm-8mm. The reinforcing layer is either a steel wire mesh layer or a polyester canvas layer. The steel wire mesh layer has higher tensile strength and is suitable for conveying heavy materials. The polyester canvas layer has better flexibility and is suitable for rollers with small bending radii. It is embedded inside the base layer and centered along the thickness direction of the base belt. It is fixedly connected to the base layer through a vulcanization process (vulcanization temperature 140℃-160℃, vulcanization time 20min-40min), improving the tensile strength of the base belt and preventing stretching deformation after long-term operation.

[0011] Anti-deviation structure: A wavy skirt is fixedly connected to the long edge of the base belt, that is, the two sides along the conveying direction. The skirt material is the same as the base layer and is integrally formed with the base belt through a vulcanization process. The skirt extends vertically upward to the plane of the base belt, with a height of 5mm-15mm, which is higher than the protrusion height of the rough surface structure. The wavy structure can reduce the impact and wear of the material on the skirt, and at the same time prevent the material from deviating along the width direction of the base belt, ensuring that the material is always conveyed in the sorting channel in the center of the base belt.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Solving the problem of material rolling: The textured surface structure can effectively counteract the inertial force of columnar and spherical materials by increasing the contact area and friction coefficient, suppressing their rolling along the conveying direction and improving material stability.

[0013] 2. Improve sorting accuracy and efficiency: With no rolling or deviation, materials can accurately enter the detection area of ​​the sorting module, reducing the missed detection rate and improving sorting accuracy; at the same time, it avoids conveying interruptions caused by material jamming, thus improving the processing efficiency of the sorting machine.

[0014] 3. Enhanced conveyor belt durability: The layered base belt + reinforcing layer design improves the tensile strength of the base belt, extends its wear resistance life, reduces replacement frequency, and lowers maintenance costs.

[0015] 4. Adaptable to various scenarios: The three forms of the textured structure can be adapted to different material characteristics. The yarn is suitable for lightweight spherical materials, the column with yarn is suitable for heavy columnar materials, the raised texture is suitable for irregular materials, and the wavy skirt further prevents displacement. It is suitable for various waste metal sorting scenarios such as automobile dismantling and home appliance recycling.

[0016] 5. Convenient installation and maintenance: Both the drive end and the driven end adopt a detachable connection structure, which facilitates the installation and replacement of the conveyor belt; the rough surface structure is integrally formed with the base belt or fixed by interference fit, without the need for additional connecting parts, reducing the number of failure points. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a top view of an embodiment of the present utility model. Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0018] In the diagram: 1. Base strip, 2. Textured structure, 3. Through hole, 4. Yarn body, 5. Base material layer, 6. Reinforcing layer, 7. Skirt, 8. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example 1 A conveyor belt for use in scrap metal sorting machines adopts a structure of napped surface + layered base belt + wavy skirt belt. This embodiment is suitable for sorting lightweight spherical scrap metal (such as aluminum pellets with a diameter of 5mm-10mm). The specific structure is as follows: Baseband: Substrate layer: made of nitrile rubber, 5mm thick, 600mm wide, and 4000mm long; Reinforcing layer: A 0.8mm thick polyester canvas layer (with good flexibility and suitable for small diameter rollers) is embedded in the center of the base layer and fixed to the base layer through a vulcanization process (150℃, 30min). The warp and weft density of the canvas is 20 threads / inch. Skirt: integrally molded on both sides of the base strip along its length, made of nitrile rubber, 8mm high, with a wavy wavelength of 20mm and a wave height of 3mm, and the distance between the inner side of the skirt and the edge of the base strip is 5mm.

[0021] Textured surface: Form: One-piece molded yarn, made of nitrile rubber, fixed to the outer surface of the base tape through a flocking process (flocking density is 50 yarns / cm²). Size: The yarn length is 1.5mm, evenly distributed along the length of the base tape, and the spacing between adjacent yarns is 0.5mm.

[0022] Connection structure: Drive end connection structure: Two metal connecting ear plates (material Q235, thickness 6mm) are symmetrically arranged on both sides of one end of the base belt. They are fixed to the end of the base belt by vulcanization and bolts. The ear plates are provided with bolt holes with a diameter of 10mm for connection with the drive roller bushing by M10 bolts. Driven end connection structure: a tensioning seat (material Q235) fixed to the other end of the base belt. An M14×150mm tensioning screw is welded on the tensioning seat. The screw is threadedly connected to the tensioning frame of the sorting machine. The tension of the base belt is adjusted by rotating the screw (tension range 40-70N / m).

[0023] Working process: During installation, the drive end ear plate is fixed to the drive roller, and the driven end tension screw is adjusted to the base belt until there is no slack. After starting the sorter, the drive roller drives the base belt to rotate, and the spherical aluminum shot falls on the woolen surface structure. The contact area between the wool and the shot is increased by 45% compared to the smooth surface, and the coefficient of friction is increased to 0.5, so the shot does not roll. The wavy skirt belt prevents the shot from deviating along the width direction, and the shot accurately enters the eddy current sorting module. The sorting accuracy reaches 97%, and the processing efficiency is 20% higher than that of the smooth conveyor belt.

[0024] Example 2 like Figure 1 , 2 As shown, the conveyor belt adopts a columnar rough surface (with a rough body + baffles) + layered base belt. This embodiment is suitable for sorting heavy columnar scrap metal (such as short sections of steel bars with a diameter of 15mm-25mm). The specific structure is as follows: Baseband: Substrate layer: made of neoprene rubber (with stronger wear resistance), 6mm thick, 800mm wide, and 5000mm long; Reinforcing layer: A 1mm thick steel wire mesh layer (high tensile strength) with a mesh size of 10mm×10mm is embedded in the center of the substrate layer and fixed to the substrate layer through a vulcanization process (160℃, 25min); Through holes: They are arranged in a matrix array along the length and width of the baseband, with a hole diameter of 8mm and a hole spacing of 20mm (both horizontal and vertical spacing are 20mm).

[0025] Textured surface: Form: A column made of the same material as the baseband (chloroprene rubber), with a diameter of 7.8mm (interference fit with the through hole) and a length of 10mm; Detailed structure: One end of the column passes through the through hole and is fixed to the base strip through a vulcanization process (fixing depth 3mm), while the other end protrudes 7mm from the outer surface of the base strip; the end protruding from the base strip has 6 yarns integrally formed (material neoprene rubber, length 2mm, diameter 1mm, evenly distributed around the circumference); both ends of the column have integrally formed circular baffles with a diameter of 10mm (thickness 1mm), which fit against the outer and inner surfaces of the base strip respectively to prevent the column from shifting.

[0026] Connection structure: Drive end connection structure: adopts a snap-on connection, with a plastic snap (material PA66) fixed at one end of the baseband, which is compatible with the slot of the drive roller to achieve quick disassembly; Driven end connection structure: Same as in Example 1, tension screw adjusts tension (range 50-80 N / m).

[0027] Working process: The short section of the reinforcing bar is placed on the rough surface structure of the column. The yarn at the end of the column is in close contact with the surface of the reinforcing bar, increasing the friction coefficient to 0.6. At the same time, the support of the column prevents the reinforcing bar from turning over. The baffle ensures that the column does not move and the base band operates smoothly. The short section of the reinforcing bar accurately enters the magnetic separation module, with a sorting accuracy of 96% and no missed detections. The base band has a service life of up to 15 months.

[0028] Example 3 The conveyor belt uses a textured surface and a layered base belt. This embodiment is suitable for sorting irregular scrap metal (such as twisted sheet metal and perforated metal parts). The specific structure is as follows: Baseband: Substrate layer: made of nitrile rubber, 4mm thick, 700mm wide, and 4500mm long; Reinforcing layer: A 0.9mm thick polyester canvas layer is used, which is fixed to the substrate layer through a vulcanization process (140℃, 35min).

[0029] Textured surface: Form: The diamond-shaped raised texture is integrally formed on the outer surface of the baseband and is formed synchronously with the baseband through a molding process; Dimensions: The side length of the diamond pattern is 10mm, the height is 0.4mm (perpendicular to the outer surface of the baseband), the spacing between adjacent diamond patterns is 5mm, and the pattern depth (i.e., the height of the protrusion) is 0.4mm.

[0030] Connection structure: Both the driving end and the driven end are connected by bolts to the lugs (consistent with Example 1), and the tension adjustment range is 45-75 N / m.

[0031] Working process: Irregular metal parts fall on the diamond-shaped raised texture. The concave and convex structure of the texture increases the contact area with the surface of the parts. At the same time, the diamond structure "bites" the parts to prevent them from flipping. The parts are stably conveyed along the direction guided by the texture. After entering the sorting module, the sorting accuracy reaches 95%, the processing efficiency is improved by 18%, and there is no obvious wear on the base belt surface (the texture height only decreases by 0.05mm after 12 months of use).

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A conveyor belt used in a scrap metal sorting machine, characterized in that, The system includes a base belt, a roughened surface structure disposed on the outer surface of the base belt, and a drive end connection structure and a driven end connection structure disposed at both ends of the base belt. The drive end connection structure is used to detachably connect to the drive roller of the scrap metal sorting machine, and the driven end connection structure is used to detachably connect to the driven roller of the scrap metal sorting machine. The roughened surface structure is used to increase the friction between the outer surface of the base belt and the columnar or spherical scrap metal material to suppress material rolling.

2. The conveyor belt for a scrap metal sorting machine as described in claim 1, characterized in that, The textured surface is made of yarn integrally formed on the outer surface of the baseband.

3. The conveyor belt for use in a scrap metal sorting machine as described in claim 2, characterized in that, The yarn protrudes from the surface of the base tape, and the length of the yarn is 1mm-2mm.

4. The conveyor belt for use in a scrap metal sorting machine as described in claim 1, characterized in that, The baseband has through holes arranged in a matrix array. The textured structure is a column protruding from the outer surface of the baseband and is made of the same material as the baseband. The textured structure is fitted inside the through holes.

5. The conveyor belt for use in a scrap metal sorting machine as described in claim 4, characterized in that, The textured surface has several yarn bodies integrally formed at the ends of the textured surface.

6. The conveyor belt for a scrap metal sorting machine as described in claim 5, characterized in that, Both ends of the textured structure are integrally formed with a stopper whose diameter is slightly larger than that of the textured structure.

7. The conveyor belt for use in a scrap metal sorting machine as described in claim 1, characterized in that, The baseband includes a substrate layer and a reinforcing layer disposed inside the substrate layer; the substrate layer is made of nitrile rubber or neoprene rubber, and the reinforcing layer is a steel wire mesh layer or a polyester canvas layer, and the reinforcing layer and the substrate layer are fixedly connected by a vulcanization process.

8. The conveyor belt for use in a scrap metal sorting machine as described in claim 1, characterized in that, The raised texture integrally formed on the outer surface of the baseband forms a textured surface structure, and the raised texture can be any one of diamond pattern, serrated pattern or arrow pattern.

9. A conveyor belt for use in a scrap metal sorting machine as described in claim 8, characterized in that, The height of the raised texture is 0.3mm-0.5mm, and the height direction is perpendicular to the outer surface of the baseband.

10. A conveyor belt for use in a scrap metal sorting machine as described in claim 1, characterized in that, The baseband has a wavy skirt that is perpendicular to the plane of the baseband and is fixedly connected to its longitudinal edge.

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