Portable Hot Vulcanizing Conveyor Belt Repairing Machine With Aluminum Alloy

Process flow of hot vulcanized joint of natural rubber conveyor belt

Step 1: Use clamps of suitable size to clamp both ends of the strap to avoid slipping; pull the strap tightly with a chain and place it at a low place; overlap the two ends of the prepared joint to mark its center line, and lay the two sides flat for To prevent the joint from bending, it is recommended to measure the straightness with a 25m nylon wire; subtract the joint length to verify that the belt circumference is accurate

Step 2: Determine the running direction of the rack, and mark the joints according to the running direction;

Step 3: Overlap the joints at both ends of the natural rubber conveyor belt, and the overlapping length is the belt width;

Step 4: Determine the center of the natural rubber conveyor belt, the length should be greater than the overlapping distance, so that the reference mark for inspection after the joint is completed, and three center points are determined in the center of the conveyor belt;

Step 5: Use a square ruler to determine the angle of inclination and then peel off the heads at both ends. One side peels off the steps along the working surface, and the other side peels off the steps along the non-working surface to form a corresponding layer. When peeling off the steps, you can use a wallpaper knife to gently cut the rubber surface or cloth layer. Use a screwdriver to push the shovel into layers, and then use a vise to tear it open one by one;

Step 6: The surface of the rubber and cloth layer needs to be polished to increase the contact area; use ethyl acetate or gasoline to remove dirt and keep the belt surface clean; pay attention to avoid polishing or scorching during polishing;

Step 7: Both steps are evenly coated with vulcanized glue; the cross section of the head cover glue must also be painted, and the glue must be painted on both sides of the steps;

Step 8: After the glue solvent has evaporated, the interlayer adhesive sheet can be laid. It should be noted that the film should be flattened, and no glue deficiency is allowed, and then cut off the excess part of the edge;

Step 9: The joint cover must be coated with glue and sealed with the same quality of cover tape, and the same is true on both sides of the belt edge. Sufficient edge glue must be filled and separated with non-woven fabric or old newspaper;

Step 10: The joint part must use a horn, and the thickness of the horn should be 1 to 2 mm less than the thickness of the joint belt body to ensure that the width and pressure of the belt body are uniform;

Step 11: After installing the upper hot plate, start to heat up and pressurize, and start timing when the temperature reaches 145 degrees Celsius;

Step 12: After the vulcanization is completed, wait for the temperature to drop below 80°C before taking out the natural rubber conveyor belt, and at the same time check whether the center line is in a straight line.

Main Parameter:

Portable Hot Vulcanizing Conveyor Belt Repairing Machine With Aluminum Alloy

Portable Hot Vulcanizing Conveyor Belt Repairing Machine With Aluminum Alloy

What is splicing/ jointing/ welding a belt?

Conveyor belt splicing/ jointing/ welding is the process of joining together two pieces of conveyor belt. Usually, this is done to either elongate the original conveyor belt or to repair a torn or damaged conveyor belt. There are three joint methods for rubber conveyor belts as follow.

How many ways are there for conveyor belt joints?There are three joint methods for rubber conveyor belts as follow.

Mechanical joint

Generally, it refers to the use of belt buckle joints. This joint method is convenient, convenient and economical, but the joints are inefficient and easy to damage, which has a certain impact on the service life of conveyor belt products. In the joints of PVC and PVG whole core flame retardant and antistatic conveyor belts, this joint method is generally used for products below grade 8 belts.

Conveyor belt cold jointing method

That is, the use of cold-bonded adhesives for joints. This joint method is more efficient and economical than mechanical joints, and should be able to achieve better joint effects. However, from a practical point of view, due to the difficulty in mastering the process conditions, and the quality of the adhesive has a great influence on the joints. So not very stable.

Conveyor belt hot vulcanization joint method

The conveyor belt joint has proved to be the most ideal joint method in many years of actual combat, which can ensure high joint efficiency, and is also very stable. The joint life is also very long and easy to master. However, there are disadvantages such as troublesome process, high cost, and long joint time.

Portable Hot Vulcanizing Conveyor Belt Repairing Machine With Aluminum Alloy

Qingdao Running Machine Co., ltd 2022 Mining Conveyor Belt Welding Machine Hot Jointing Conveyor Belt Splicing Machine is mainly applied to industries for hot vulcanization splicing and repairing conveyor belts such as metallurgy, mine, power plant, port, dock, construction material cement, chemical industry, tobacco, and food automatic line field.

Product Description
1.ZLJ conveyor belt vulcanizing machine is combined type machine adopting electric heating technology.
2.It's greatest advantage is that it is evenly heated.
3.By using rubber pressure bag,the machine works smoothly with uniform pressure.
4.And it's also equipped with portable automatic electronic control box ,which is easy to operate and has long operating life.
5.ZLJ conveyor belt vulcanizing machine is suitable for vulcanized joints (repair) of various tapes such as canvas, nylon, steel cord core, PVC / PVG.
6.Water-cooling system can be chosen to save working time for it only takes about 20mins to drop the temperature down to 60 ºC.
7.It's a new ideal vulcanization joint (repair) equipment and has been widely used in metallurgy, mining, cement,power plants, ports, building materials, chemical and other sectors.

2022 Mining Conveyor Belt Welding Machine Hot Jointing Conveyor Belt Splicing Machine

Technical Parameters:
* Vulcanizing temperature: 145ºC (adjustable 0~200ºC)
* Temperature-rising time (from normal temp to vulcanizing temp):≤50 mins(around 25~30 mins normally)
* Improved cooling system: using pressure pump for cooling: only 5mins (cooling from 145 to 75 degrees)
* Belt width: from 650mm to 3000mm 200PSI Almex alike Uniform Pressure Bag for Conveyor Belt Press
* Degree of the heating platen:22 °/17 °/ 20 ° (rectangle and other degree is optional)
* Waterbag/ air pressure Press for 100PSI, 200PSI etc.
* Surface pressure for textile and steel cord belts, Up to 1.8Mpa.
* 100 p.s.i. (7 kg/cm sq.) units suitable for splicing fabric ply belting
* 200 p.s.i. (14 kg/cm sq.) units suitable for splicing steel cord conveyor belting
* Customization/OEM: Different heating platen size and combination

2022 Mining Conveyor Belt Welding Machine Hot Jointing Conveyor Belt Splicing Machine

Note:

• Specifications are subject to change without notice;
• Build-in cooling standard on all units;
• Total weights include electrical control panel, cable set and set up templates for all models;
• 200 PSI models include fluid pressure pump and reservoir unit Model HPP20-4(mandatory for operating pressure above 100PSI/7 kg/cm sq);
• Temperature adjustable between 0-199deg.C;
• Sectional vulcanizers are built on a 22 degree bias, 16/20 or other degree are optional;
• Custom sizes, rectangular configurations and multiple platen arrangements available on request.

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When order, pls supply below information, our technician will make a solution for you, or pls choose one model from bottom traditional sizes table

• Max belt width
• Heating platen length (or pls supply belt manufacturer’s recommended splice length)
• What kind of belt, light duty belts or heavy duty belts, belt model No.
• Working Voltage
• Pressure requirements (as our experience, normal is 0.8Mpa, for EP belts is 1.2Mpa, for steel cord belts is 1.4Mpa)
• Degree of heating platen (standard will be 22 degree)

Normal vulcanizer model sheet:


A= Splice Length
B= Bet Width
C=Length of platen along the belt
D= Width of platen
measured square to beltline
E= Bias Ange
F=Width of platen along the belt on bias

Main Componets:

• Bars are available in various profiles and lengths to provide a custom solution for your needs
• Bars are specially designed for running machine and manufactured out of quality extruded aluminum
• Various bolt and nut styles complement each bar type and provide a secure, pressurized splice

• Heating Platen
• Custom extruded plank, silicone heating elements (up to 180°C/356°F), and durable composite
• insulating packaging are used to construct a flexible platen that contours to belt irregularities.
• It is made up with a whole piece of silicone plate without any splicing point, which ensure the full uniform heating as well as the fast rising of temperature.
• It takes 15~25mins rise up to vulcanizing temperature (about 145°C).
• The flush “quick connect” make smooth profile. Recessed power connections are sealed for moisture resistance.
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