Briefly describe the main bonding process of the belt? There are several bonding methods for belt jo

Briefly describe the main bonding process of the belt, if the main bonding process, there must be a parking lot flow room, according to the order of this assembly line.

This is the need to unfasten the belt to find the place where you need to stand, and then hold down a set, then.

The common methods of general conveyor belt joints are: mechanical joints, cold bonding joints, hot vulcanized joints, etc.

1. Conveyor belt mechanical joint method:

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

2. Cold bonding joints.

That is, a cold-bonded adhesive is used for the joint. This joint method is more efficient than mechanical joints, and it is more economical, and it should be able to have a better joint effect, but from a practical point of view, because the process conditions are difficult to master, and the quality of the adhesive has a great impact on the joint, so it is not very stable.

At present, among the more well-known adhesives in China, Shengka SK811 conveyor belt glue, Huangshi LDJ243 series and other conveyor belt glues are used in large quantities in China.

3. Hot vulcanized joints.

Conveyor belt splices have proven to be the most ideal splice method in many years of practice, ensuring high splice efficiency, but also being very stable, with a long splice life and easy to master. However, there are disadvantages such as process trouble, high cost, and long joint time.

Generally, there are three kinds.

1. Mechanical joints - joints with belt buckles;

Advantages: easy to maintain, convenient joints;

Disadvantages: short use time, easy to hurt the drum and deviation;

2. Cold sticking - after tearing the two ends of the belt, apply glue, and then compact and press for 2 hours;

Advantages: convenient joints;

Disadvantages: The service time is longer than that of mechanical joints, and the joints are easy to feed materials, shortening the service life.

3. Hot vulcanization joint - after tearing the two ends of the belt, apply glue, and then use a special vulcanizer for hot vulcanization.

Advantages: long service time, the strength of the joint is basically the same as the strength of the whole belt.

Disadvantages: A special splice tool must be used.

In general, there are several commonly used methods such as mechanical joints, cold bonded joints, and hot vulcanized joints.

1.Mechanical joint, one strand refers to the use of belt buckle joint, this joint method is convenient and convenient, also more economical, if the belt is damaged during use, when you want to replace a new belt, this belt buckle joint is easy to replace, but the efficiency of the joint is low, easy to damage, and has a certain impact on the service life of the conveyor belt product.

2.Cold bonding joint, that is, the use of cold adhesive adhesive for the joint, with adhesive as raw material, the two ends of the conveyor belt are connected together, the key to the cold bonding effect depends on the glue used, whether there is seamless treatment. Because this method has the advantages of high joint strength, no noise and no vibration in operation, simple operation and short joint time, it has a wide range of applications, but from a practical point of view, because the process conditions are relatively difficult to master, and the quality of the adhesive has a very large impact on the joint, so it is not very stable, in addition, the cold adhesive conveyor belt is not suitable for materials with wet and temperature requirements.

3.Hot vulcanized joints, the conveyor belt interface of hot vulcanized joints is completely closed, and it is not easy to be soaked by water. The process of belt vulcanization joint is generally to put the lower frame of the vulcanizer on the belt frame, align the two ends, and then put the hydraulic plate, the small heat insulation board, and the lower heat insulation plate in turn, and install a platform of 1-2 meters on both sides of the two vulcanizers and fix it, the upper surface of the platform should be flush with the upper surface of the lower heating plate or slightly lower, and at the same time, it can not affect the tension of the tie rod, and the two joints of the belt are placed on the platform to start vulcanization.

This method is the most ideal joint method at present, which can ensure high joint efficiency, and is also very stable, and the joint life is also very long, and it is easy to master, but the hot vulcanization joint process is more complex, and the personnel requirements are high, and the cold adhesive process is simple and short-term training can be posted.

There are two main types: cold sticky and hot sticky.

Belt hot vulcanization bonding method

Process steps

1.Prepare the work, put the belt to ensure the balance of the joint, and place the vulcanization equipment; Connect all the power supplies needed for the splice and keep the on-site environment of the conveyor belt splice clean.

2.Find the center, marking, the lower rubber surface is made, the upper rubber surface is made, and the conveyor belt peels off the two connecting surfaces into a stepped shape as required. (made according to the required parameters of the joint).

3.Polishing the upper and lower rubber surface edge glue and groove outlet, pay attention; The bevel angle is 45°.

4.Use the L1202 angle grinder with tungsten steel grinding disc to polish the upper and lower sides of the adhesive residue to expose the canvas layer and clean it as a whole.

5.Use the cleaning agent SK353 to deeply clean the upper and lower adhesive surfaces.

6.Brush the upper and lower rubber surfaces with hot vulcanizing agent SK813.

7.Spread a layer of RIT core glue between the upper and lower rubber surfaces.

8.The two connecting rubber surfaces are docked, and the upper and lower glues are laid.

Vulcanization temperature control

Vulcanization temperature: 145 3

Vulcanization time: 18 minutes, absolute orange + 1 minute, belt thickness.

Vulcanization Pressure:Connector length

EP polyester belt splices standard.

NN nylon canvas conveyor belt tung orange joint standard.

EB, CC cotton canvas conveyor belt joint standard.

And rotate the groupNote:Calculation of the length of the layered belt joint: lv=(skeleton layer 1) lst

Calculation method of conveyor belt length: lv + (bandwidth