1、 Reasons for carrying materials

The reason for carrying materials is actually very simple. The materials that stagnate on the track or upper part of the chain are transported halfway or scattered at the end point as the chain moves. As time goes on, the materials scattered along the way may fall into other warehouses, causing mixing and affecting cement quality. The same applies to the materials pulled to the tail. If the warehouse is full, it may also cause shell explosion and increase the resistance of the zipper machine, It can also cause energy waste.

2、 Method of handling strip materials

Analyzed the reasons for carrying materials, explained the hazards of carrying materials, and now discusses the handling methods of carrying materials in several aspects.

1. Change the feeding form and reduce the amount of material carried

The feeding form of the zipper machine is divided into side feeding and upper feeding. The upper part is fed, and the materials that fall on the chain and track will be taken away. The carried materials will be scattered midway and also brought to the tail of the machine. The method of handling is to change to either side feeding or double side feeding to avoid the material falling onto the track and chain. If upper feeding is necessary, the upper track can be cut off 500mm away from the feeding port. The track should be cut in two places, with a spacing of about 1000mm. The cutting length of the track should be about 150mm, and the end of the cut track should be folded down at about 30 degrees to avoid collision between the chain and the track. In this way, the chain will vibrate at this point, forcing the material to fall.

2. Cut off the track at the discharge port

When the chain pulls the material to the discharge port, the vast majority of the material falls into the warehouse, but there are still some materials that stagnate on the track and chain. If not handled, they will be pulled back. At this point, the track at the feeding port can be cut 200mm, forcing the chain to shake at that point. As a result, the material on the track loses its support and falls completely. At the same time, since there is no track here, the chain will inevitably shake at this point, and the material on the chain will be scattered.

3. Lengthen and widen the discharge chute

If the width of the discharge chute is less than the width of the machine casing, the steps it produces must aggregate, and when the chain travels, it will carry the material to the back, causing mixing; If the feeding chute is too short, some materials may easily cross the feeding port. Even if the track is cut at that point, the vibration amplitude will not be large, causing the material to continue to move forward with the chain.

4. No steps left at the final discharge end

Some zipper machines have a certain distance between the final discharge point and the machine head due to inconsistency with the process, and often have a small amount of material brought to the machine head; Although some discharge ports are located at the lower part of the machine head, the opening of the lower shell is not located outside the turning radius of the sprocket, which also leads to material accumulation at the step. Therefore, the position and size of the discharge chute are also crucial and must be taken seriously.

5. Ensure negative pressure of the casing

Ensuring negative pressure inside the body may seem like an environmental issue, but it is actually closely related to the issue of carrying materials. If there is a certain negative pressure inside the casing, dust will not easily fall on the chain or track, and the problem of carrying materials will be alleviated to a certain extent.