Method of joining a patterned conveyor belt

Abstract

The application discloses a joint method of pattern conveying belt and relates to the technical field of pattern conveying belt joint methods.The joint method of the pattern conveying belt comprises the following steps: S1, assembling a workbench, a platform is composed of a lower crossbeam, a vulcanization plate and two end workbenches, the number of the platform is increased according to the requirement of use, the height of the combined workbench is flush with the vulcanization plate, and the distance between the workbench and the hot plate of the vulcanizing machine is 80mm; and S2, placing two ends of the pattern conveying belt to be jointed on the top end of the assembled workbench, and correcting the center of the joint part of the conveying belt.The joint method is convenient for jointing the pattern belt in different environment occasions such as the factory end and the use end, greatly improves the convenience and processing efficiency in the joint process, and greatly improves the length accuracy after the joint of the pattern conveying belt and the pattern protruding effect through the mode of conveniently adjusting the interval of the pattern and vulcanization.

Description

Technical Field

[0001] This invention relates to the technical field of patterned conveyor belt connection methods, specifically a splicing method for patterned conveyor belts. Background Technology

[0002] At the factory level, belt manufacturers use molds with fixed pattern spacing to produce irregularly shaped belts. The total length of the vulcanized ring belts is fixed and is an integer multiple of the pattern spacing. This cannot meet the customer's customization requirements. As a result, the circumference after ring splicing is inaccurate. In addition, the processing of the joint position requires the use of heavy molds during use, which reduces processing efficiency and increases processing costs.

[0003] When processing the connector at the user end, it is often impossible to retain the pattern at the interface, which is generally 60 cm to 1 meter. This can lead to safety risks such as material slippage and reduced conveying efficiency.

[0004] When using the factory-side approach at the user end, the existing molds are heavy and valuable, making them inconvenient to transport to the user end and limiting the application due to the user's on-site environment. This approach cannot meet the requirements of each process on-site, and the circumference after each process is still inaccurate. Therefore, a new solution is needed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a splicing method for patterned conveyor belts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a splicing method for patterned conveyor belts, comprising at least the following steps:

[0007] S1: Assemble the workbench, which will consist of a lower crossbeam, a vulcanizing plate, and two end workbenches. The number of platforms can be increased according to the needs of use. The height of the assembled workbench is flush with the vulcanizing plate, and the distance between the workbench and the hot plate of the vulcanizing machine is 80mm.

[0008] S2: Place both ends of the patterned conveyor belt that needs to be spliced ​​on the top of the assembled workbench, align the center of the splice part of the conveyor belt, and cut the interface of the aligned patterned conveyor belt according to the calculated splice length so that the interface is placed flat.

[0009] S3: Prepare a template strip of corresponding width according to the pattern shape and spacing of the patterned conveyor belt. The template strip is made of metal and its thickness is 0.5-1.0mm thinner than the actual belt thickness. Place one side of the template strip between the pattern spacing at the joint of the patterned conveyor belt.

[0010] S4: After installing the upper plate, heat insulation plate, water pressure plate and upper crossbeam of the vulcanizing device, install the screws and tighten the bolts so that the bottom end of the upper plate fits with the mold strip;

[0011] S5: Use a vulcanizing machine to apply pressure vulcanization until the joint is formed;

[0012] S6: Remove the upper plate, heat insulation plate, water pressure plate and upper crossbeam, grind and repair the vulcanized joint to complete the processing of the joint position.

[0013] Preferably, the step of using a vulcanizing machine for pressure vulcanization until molding includes at least the following steps:

[0014] S1: After the vulcanizing pressure of the vulcanizing machine is increased to 0.8MPa, the temperature is increased to 100℃, and then the pressure is increased to 1.5MPa. When the temperature reaches 145℃, the timing is started. The temperature control tolerance is 145±3℃.

[0015] S2: Vulcanization time is 20-40 minutes;

[0016] S3: Cooling: After the vulcanization time is reached, turn off the power to the electrical control box to cool the tape. Cool it to below 80°C, drain the water from the water pressure plate, and open the mold.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, through its method design, facilitates the splicing of patterned belts in different environments, such as the factory and the user end, improving convenience and processing efficiency. Furthermore, by using a vulcanization method that allows for easy adjustment of the pattern spacing, it greatly improves the circumference accuracy and pattern protrusion effect of the connected patterned conveyor belts. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing the placement of the patterned conveyor belt joint of the present invention;

[0021] Figure 2 This is a schematic diagram of the center correction of the present invention;

[0022] Figure 3 This is a schematic diagram of the pressing of the patterned conveyor belt joint of the present invention;

[0023] Figure 4 This is a schematic diagram illustrating the calculation of the step length of the patterned conveyor belt joint of the present invention;

[0024] Figure 5 This is a schematic diagram illustrating the calculation of the inclined head length of the patterned conveyor belt of the present invention;

[0025] Figure 6 This is a schematic diagram of the transverse stripping of the patterned conveyor belt of the present invention;

[0026] Figure 7 This is a schematic diagram of the cutting process for the patterned conveyor belt of the present invention;

[0027] Figure 8 This is a schematic diagram showing the placement of the module strip in this invention;

[0028] Figure 9 This is a schematic diagram illustrating the application of the vulcanization device for the patterned conveyor belt joint of the present invention. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] A method for splicing a patterned conveyor belt includes at least the following steps:

[0031] S1: Assemble the workbench, which will consist of a lower crossbeam, a vulcanizing plate, and two end workbenches. The number of platforms can be increased according to the needs of use. The height of the assembled workbench is flush with the vulcanizing plate, and the distance between the workbench and the hot plate of the vulcanizing machine is 80mm.

[0032] S2: Place both ends of the patterned conveyor belt that needs to be spliced ​​on the top of the assembled workbench, align the center of the splice part of the conveyor belt, and cut the interface of the aligned patterned conveyor belt according to the calculated splice length so that the interface is placed flat.

[0033] The method for aligning the center of the conveyor belt joint is as follows: At the end of the patterned conveyor belt, measure the center points at both ends to identify three center points. The distance between any two center points must be greater than 1.0m. Draw a line from the first center point to the third center point. Check if this line passes through the second center point to confirm whether the patterned conveyor belt is placed flat and aligned. (Refer to...) Figure 1 ;

[0034] When starting to open the interface, perform stripping processing and draw the vertical line bb' on the left side of the strip end. The procedure is as follows: On the center line, choose any center point O about 1.5m backward as the reference point, and measure the bandwidth a a'. Using O as a fixed point and L as the length, take b and b' on both sides of the bandwidth. Connect bb to form the vertical line of the strip end, ab⊥bb', a'b'⊥bb'. (Refer to...) Figure 2and Figure 3 .

[0035] The step length and bevel length of the tape connector are shown in Table 1 and Table 2, respectively.

[0036] Table 1

[0037] Canvas strength N / mm Step length (mm) Canvas strength N / mm Step length (mm) EP, NN -120 and below 120 EP, NN-350 350 EP, NN-150 150 EP, NN-400 400 EP, NN-200 200 EP, NN-450 450 EP, NN-250 250 EP, NN-500 500 EP, NN-300 300 / /

[0038] The length of the bevel is determined as shown in Table 2 below:

[0039] Table 2

[0040] Conveyor belt width (mm) Overlap angle ° Angled head length (mm) Conveyor belt width (mm) Overlap angle ° Angled head length (mm) 300 20 100 1100 20 400 350 20 150 1200 20 450 400 20 150 1300 20 450 500 20 200 1400 20 500 600 20 200 1500 20 550 650 20 250 1600 20 600 700 20 250 1700 20 600 800 20 300 1800 20 650 900 20 350 1900 20 700 1000 20 350 2000 20 750

[0041] Note: The bevel length is taken as bandwidth * 0.364, and the calculation result is rounded to the nearest integer multiple of 50mm.

[0042] Calculation of the total length L of the joint

[0043] L=(n-1)s+2b+c+d

[0044] n—the number of layers of the conveyor belt core fabric;

[0045] s—step length, mm;

[0046] b—The distance from the canvas at one end of the conveyor belt to the root of the other end is 30mm;

[0047] c—When joining, the overlap distance between the two canvases is approximately 2~5mm (200 type).

[0048] d—Length of the bevel, mm.

[0049] Mark the lines according to the required joint length and bevel angle. (See illustration) Figure 5

[0050] Peel off the cover rubber and core at both ends according to the marked lines, ensuring the ends are matched. Exercise extreme care when cutting the canvas to avoid damaging adjacent layers. Do not damage the core layer canvas during peeling. The cut at the cover rubber section should be 45° to increase the contact area. The edge protective layer should be cut flush with the core area. On the unpeeled side of the conveyor belt, peel off 30mm diagonally at the end. Figure 6 As shown.

[0051] The core, edge rubber, and cut areas should be roughened with a wire grinder. The degree of roughening should be strictly controlled. Roughening should be even and careful. For NN and EP canvas conveyor belts, only roughen the rubber on the canvas surface; do not completely smooth the rubber layer. Also, try not to damage the sizing layer of the canvas. Figure 7 As shown;

[0052] After sanding, use a brush to remove dust and glue residue from the surface, and clean the exposed roughened surface with solvent. Toluene or 120# solvent oil can be used for cleaning.

[0053] After cleaning, apply the specified adhesive evenly to the roughened area. In winter and during the humid rainy season, use auxiliary equipment such as infrared lamps and hair dryers for forced drying until the adhesive is no longer noticeably sticky when pressed by hand.

[0054] Before the two processing surfaces are joined together, a sheet of galvanized iron is laid at the seam between the two flat plates. In other embodiments, a whole sheet of galvanized iron can be laid, and then a release paper is laid.

[0055] After thorough drying, the film is laminated according to the specified thickness. The two processed surfaces are aligned with the center line and then measured to check for center offset.

[0056] Covering adhesive should be applied to the seams of the overlapping parts of the cover adhesive. The thickness should be similar to that of the normal parts of the edge. Remove excess adhesive from the edge and the belt body. When removing excess adhesive, make sure to blend it naturally with the belt body at the joint with the belt body's beveled adhesive sheet. The edges should be neatly trimmed to prevent defects such as sponge or exposed fabric after vulcanization.

[0057] Before vulcanization, the joint area should be vented. This can be done by tapping with a hammer or rolling with a wooden roller to remove the air before vulcanization.

[0058] S3: Prepare templates of corresponding width according to the pattern shape and spacing of the patterned conveyor belt. The templates are made of metal and the thickness of the templates is 0.5-1.0 mm thinner than the actual thickness of the belt.

[0059] During use, independent processing is adopted to form the mold strip. The mold strip is made of metal to avoid a lot of deformation during the thermal expansion and contraction process of vulcanization. The function of the mold strip is to adjust the pattern spacing, retain the pattern at the joint position, and make the circumference accurate.

[0060] When using the template strip, due to its independent design, it is lightweight and small in size, making it easy to transport directly to the application end. At the factory end, it can also be placed directly between patterns without the need for hoisting, which greatly improves the convenience and efficiency of processing.

[0061] Furthermore, because the pattern is leveled between the patterns using a mold strip during processing, the pattern is prevented from being flattened during vulcanization bonding.

[0062] S4: After installing the upper platen, heat insulation plate, water pressure plate, and upper crossbeam of the vulcanizing unit, install the screws and tighten the bolts so that the bottom end of the upper platen is in contact with the mold strip. Figure 7 As shown;

[0063] S5: Use a vulcanizing machine to apply pressure vulcanization until the joint is formed;

[0064] S6: Remove the upper plate, heat insulation plate, water pressure plate and upper crossbeam, grind and repair the vulcanized joint to complete the processing of the joint position.

[0065] Using a vulcanizing machine to perform pressure vulcanization until molding includes at least the following steps:

[0066] S1: After the vulcanizing pressure of the vulcanizing machine is increased to 0.8MPa, the temperature is increased to 100℃, and then the pressure is increased to 1.5MPa. When the temperature reaches 145℃, the timing is started. The temperature control tolerance is 145±3℃.

[0067] S2: Vulcanization time is 20-40 minutes;

[0068] S3: Cooling: After the vulcanization time is reached, turn off the power to the electrical control box to cool the tape. Cool it to below 80°C, drain the water from the water pressure plate, and open the mold.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method of joining a patterned conveyor belt, characterized by: At least comprising the following steps: S1: Assemble the workbench, which is composed of a lower crossbeam, a vulcanization plate and two end workbenches. The number of platforms is increased according to the needs of use. The height of the assembled workbench is flush with the vulcanization plate. The distance between the workbench and the hot plate of the vulcanizing machine is 80mm; S2: Place the two ends of the pattern conveyor belt that needs to be jointed on the top end of the assembled workbench. Adjust the center of the jointed part of the conveyor belt. The adjusted pattern conveyor belt is opened according to the calculated joint length to make the joint flat; S3: According to the pattern shape and spacing of the pattern conveyor belt, prepare a corresponding width of the mold strip. The mold strip is made of metal material. The thickness of the mold strip is selected to be 0.5-1.0mm thinner than the actual measured belt thickness. Place the mold strip on one side of the joint position of the pattern conveyor belt between the pattern spacings; S4: Install the upper plate, heat insulation plate, water pressure plate and upper crossbeam of the vulcanizing device. Screw the screw rod and bolt to make the bottom end of the upper plate fit with the mold strip; S5: Use the vulcanizing machine to pressurize and vulcanize until the joint is formed; S6: Remove the upper plate, heat insulation plate, water pressure plate and upper crossbeam. Grind and finish the vulcanization joint to complete the processing of the joint position.

2. A method of splicing a patterned conveyor belt according to claim 1, characterized in that: The pressurized vulcanization using the vulcanizing machine until the molding at least comprises the following steps: S1: After the vulcanizing machine vulcanization pressure is raised to 0.8MPa, start heating to 100℃, then pressurize to 1.5MPa, temperature rises to 145℃, start timing, temperature control tolerance 145±3℃; S2: The vulcanization time is 20-40 minutes; S3: Cooling: When the vulcanization time reaches, turn off the power of the electric control box to cool the rubber belt. Cool to below 80℃, release the water in the water pressure plate, and open the mold.

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