Plastic resin: PP
Chair weight: 2900g
Mold dimension: 1350*830*860mm
Mold weight: 7350kgs
Mold steel: 718 for cavity and core
Steel hardness: HRC33-38
Mold slider insert: DIN 1.2738 with Nitriding
Mold gate: Big sprue turn to edge gate
Injection system: hot runner
Plastic chairs are widely used in daily life. Different uses affect the parameters of plastic chair molds, which can be roughly divided into the following categories:
1. According to the use environment: outdoor chair mold, outdoor lounge chair mold, office chair mold...
2. According to the person: children chair mold, student chair mold, baby chair mold...
3. According to chair style: plastic rattan chair mold, plastic bench mold...
The points need to concern in making a good quality chair mold
1. Cycle time:
The most effective way to reduce cycle time throughout the plastic chair production cycle is to shorten the cooling time. The temperature of the cooling water, the weight of the plastic chair, and the design of the water runner all affect the cycle time. So we will consider the runner type and the points of the runner to achieve the balance of mold cost and production cost.
2. Mold service life:
The hardness of the mold steel determines the service life of the plastic mold. At the same time, the accuracy of the plastic chair is guaranteed and defects are prevented. The high-quality mold steel has been processed many times, and the steel is chrome-plated to prevent the corrosion of the mold during the processing to affect the mold life.
3. Mold structure:
In the manufacturing process of plastic injection chairs, the problem of insufficient material filling will occur. Mostly because the air in the mold cannot be exhausted, which makes the material unable to be filled.
Mold flow analysis can effectively avoid these product defects.
4. The parting line
There is a high requirement on the chair surface, so the parting line location is important.
According to the sample or customer's thoughts, we will discuss the point of the parting line.
5. Wall thickness
6. Mould maintenance
During the continuous work of the mold, mold maintenance is required due to problems such as wear of parts, deterioration of lubricant, water leakage, and plastic material crushing during movement.
Mold maintenance is generally divided into daily maintenance and lower mold maintenance.
The daily maintenance of the mold generally includes the following aspects:
* Regular rust removal (appearance, PL surface, cavity, core, etc.)
* Periodically re-lubricate (ejection mechanism, row position, etc.)
* Periodic replacement of wearing parts (rods, bolts, etc.)
* Other places to pay attention to