Injection molding machine quality appraisal

injection molding machine is a plastic molding machine that uses thermoplastic material to deform into the desired product through heating and pressure in a closed mold. It is mainly composed of injection molding system, mold clamping system, hydraulic system, electronic control system and heating/cooling system, etc., and is widely used in the plastic product production industry.
injection molding machine is an industrial equipment mainly used to produce various plastic products, such as plastic bottles, plastic containers, plastic toys, etc. Injection molding machines produce plastic products of various shapes by injecting molten plastic into a mold and allowing it to cool and form.
In the case of injection molding machine quality appraisal, Zhongke Testing can provide injection molding machine quality appraisal services.

injection molding machines mainly include vertical injection molding machines, horizontal injection molding machines, angle injection molding machines, two-color injection molding machines, two-color injection molding machines and electric injection molding machines.

GB/T 32515-2016 Special frequency conversion speed regulation equipment for injection molding machines
YB/T 4818-2020 Precision seamless steel pipe for injection molding machinery
SN/T 3701.11-2015 Technical requirements for inspection of imported old mechanical and electrical products Part 11: Injection molding machine
JB/T 11730-2013 Industrial machinery and electrical equipment and systems Injection molding machine AC servo drive system technical conditions
JB/T 10894-2008 Injection molding machine computer control system General technical conditions

quality product dispute situation:
According to the situation reported by the entrusting party and the information provided, the entrusting party signed an "Order Order" with a certain company (hereinafter referred to as the supplier) to purchase an injection molding machine. The client put the machine into use and found that the screws of the drive shaft were very easy to break. Within a month, all the screws broke. After removing the drive shaft and bringing it back for repair, they continued to break after use until only two screws were left.
In order to further clarify the cause of the screw breakage, the client hopes to conduct a quality analysis on whether there are quality problems with the "injection molding machine" involved.
quality analysis results: The
quality analysis expert group discussed the relevant information and on-site investigation and inspection of the "injection molding machine" involved and conducted a comprehensive quality technical analysis, and made the following suggestions and conclusions:
1. The function of the transmission shaft of the "injection molding machine" involved met the requirements;
2. The reason for the breakage of the transmission shaft link screw of the "injection molding machine" involved was that the link screw on the transmission shaft lacked effective anti-loosening measures and was caused by improper operation.
Among them, improper operation is the main cause of screw breakage. The screw is pulled off by one-time force. It is believed that adding a spring piece or locking piece can solve the problem of preventing the screw from loosening. The equipment involved in the case originally had spring washers, but they were not seen at the scene.