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Common injection molding product defects and solutions-7 Apr 10, 2020
Weld line Causes: 1. The product design is unreasonable. 2. The injection speed is too slow. 3. Injection pressure is too low. 4. The injection time is too short. 5. The mold surface temperature is too low. 6. Insufficient exhaust. 7. The gate position is unreasonable. 8. The melt temperature is too low. Solutions: 1. Increase the material temperature. 2. Improve injection speed. 3. Increase the m...
- mold Filling
- injection molding machine
- plastic mold Filling
Plastic hot runner mould discussion Apr 17, 2020
The hot runner mold has the following advantages: 1. Reduce waste ratio of parts and improve part quality; 2. Reduce product deformation and improve product appearance; 3. Improve productivity and achieve automated production; 4. Expand and improve the consistency and balance of products; 4. Shorten the molding cycle of parts; 5. Very suitable for the use of multi-cavity molds; Although comp...
- hot runner mold
- cold runner mold
- multi-cavity mold
The inner undercut of the product cannot be used as a lifter, what mold structure should be used? Apr 22, 2020
We all know that products have undercut, usually, the inner undercut of the product is generally released by a lifter, and the outer undercut of the product is released by a slider. When the inner undercut of the product cannot be used as a lifter, what structure do we use? As shown below: Encounter this type of product, can not do lifter, can only consider the inner slider core pulling. The...
- plastic injection mold
- injection mold design
- undercut problem
Common injection molding product defects and solutions-8 Apr 26, 2020
Cell the reason: 1. Holding pressure is too low. 2. The holding time is too short. 3. The injection speed is too fast. 5. The back pressure is too low. 6. The mold temperature is too low. 7. The product is too thick. 8. Melt temperature is too high. Solution: 1. Increase the back pressure of the melt. 2. Reduce the reverse rope. 3. Increase holding pressure. 4. Increase holding time. 5. Reduce the...
- mold Filling
- injection molding defects
- plastic mold Filling
It is not difficult to understand the principle of core pulling design of the curved pipe mold. Apr 26, 2020
Pipe type products are also relatively common, and many mold designers do not understand the principle of arc core pulling, let me share with you. Due to the relatively long stroke of arc core pulling, oil cylinder core pulling is required, as shown in the figure below For arc core pulling, the slider insert needs to be divided into several pieces, and the core is pulled along the arc of the produ...
- pipe mold
- oil cylinder core pulling
- mold design
What is the Die casting Mold? Apr 30, 2020
Die casting mold is a method of casting liquid die stamping, a process completed in a special die casting die-stamping machine. Its basic process is as below: First, the metal liquid filled into the mold cavity with low speed or high speed, the mold has a movable cavity surface, Then it is stamped as the metal liquid cools, Finally, not only eliminate the defects of the cav...
- Die Casting
- Casting Mold
- Stamping mold
Defects discussion of plastic molded parts Apr 30, 2020
Today we are going to discuss the injection defects of burn marks. 1. Poor venting, the residual gas in the cavity generates high temperature due to adiabatic compression 2. The surface of the cavity is not smooth enough to easily adhere a small amount of plastic, which is easily scorched by high temperature, and then mixed into the melt 3. The melt temperature is too high 4. Injection pressure is...
- plastic molded parts
- injection defects
- injection molding part
What is Double Color Mold? Apr 30, 2020
Double Injection Mold is also called Two Color Mold. That's two different materials or two color materials injected in one injection machine, injected by twice, but the product only comes out one shot from the mold. This mold technology is called double material injection, usually finished by one set mold, and it needs special two color injection molding machine to produce the products. Double inj...
- Double shot mold
- double injection mold
- two color mold

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