The automatic zipper machine safety device of the injection molding machine is mainly used to protect the safety of people and machines. It is mainly composed of safety doors, hydraulic valves, limit switches, photoelectric detection elements, etc., to achieve electrical-mechanical-hydraulic interlock protection.
Fully automatic zipper machine
The monitoring system mainly monitors the oil temperature, material temperature, system overload, and process and equipment failures of the injection molding machine, and indicates or alarms when abnormal conditions are found.
, It uses the thrust of the screw (or plunger) to inject the plasticized plastic in the molten state (ie viscous flow state) of the fully automatic zipper machine into the closed mold cavity, and the product is obtained after solidification and shaping crafting process.
Injection molding is a cyclic process, each cycle mainly includes: quantitative feeding-melting plasticization-pressure injection-mold filling and cooling-mold opening and drawing parts. After the plastic part is pulled out, the mold is closed again for the next cycle. Fully automatic zipper machine
Injection molding machine operation project: The injection molding machine operation project includes three aspects: control keyboard operation, electrical control system operation and hydraulic system operation. Carry out the injection process action, feeding action, injection pressure, injection speed, ejection type selection, temperature monitoring of each section of the barrel, injection pressure and back pressure adjustment, etc.
Generally, the molding process of a screw-type injection full-automatic zipper machine is: first add granular or powdered plastic into the barrel, and make the plastic into a molten state through the rotation of the screw and heating of the outer wall of the barrel, and then the machine closes the mold and The injection seat is moved forward by the fully automatic zipper machine, so that the nozzle is close to the gate of the mold, and then pressure oil is passed into the injection cylinder to push the screw forward, thereby injecting the melt at a high pressure and a faster speed In a closed mold with a lower temperature, after a certain period of time and pressure holding (also known as automatic zipper machine holding pressure), cooling, solidification and forming, the mold can be opened and the product can be taken out (the purpose of holding pressure is to prevent melting in the cavity Reverse flow of materials, replenish materials into the mold cavity, and ensure that the product has a certain density and dimensional tolerance). The basic requirements of injection molding are plasticization, injection and molding. Plasticization is a prerequisite for realizing and ensuring the quality of molded products, and in order to meet the requirements of molding, injection must ensure sufficient pressure and speed. At the same time, due to the high injection pressure, a correspondingly high pressure is generated in the cavity (the average pressure in the cavity is generally between 20 and 45 MPa), so there must be a sufficient clamping force. It can be seen that the injection device and the clamping device are the key components of the injection molding machine.
There are three main aspects to the evaluation of plastic products by the fully automatic zipper machine. The first is the appearance quality of the fully automatic zipper machine, including completeness, color, gloss, etc.; the second is the accuracy of the size and relative position; the third is Physical, chemical, and electrical properties corresponding to the application. These quality requirements and the fully automatic zipper machine require different scales depending on the use occasions of the product. The defects of the product mainly lie in the design of the mold, the manufacturing accuracy and the degree of wear. But in fact, the technicians of plastic processing plants often suffer from the difficult situation of using the process of fully automatic zipper machine to make up for the problems caused by mold defects without great results.
The adjustment of the process in the production process is a necessary way to improve the quality and output of products. Because the injection cycle itself is very short, if the process conditions are not well mastered, there will be an endless supply of waste products that are automatically worn by the zipper machine. When adjusting the process, it is best to change only one condition at a time and observe a few more times. If the pressure, temperature, and time are adjusted together, it is easy to cause confusion and misunderstandings in the fully automatic zipper machine. If there is a problem, I don’t know the reason. The measures and means to adjust the process are various. For example, there are more than ten possible solutions to solve the problem of product dissatisfaction. Only by choosing one or two main solutions to solve the problem can the problem be solved. In addition, attention should be paid to the dialectical relationship in the solution. For example, if the product has a depression, sometimes the material temperature must be increased, sometimes the material temperature must be lowered; sometimes the material quantity must be increased, and sometimes the material quantity must be reduced. It is necessary to recognize the feasibility of reversing measures to solve the problem.
Post time: Jan-12-2022