Structure principle of aluminum profile extrusion press machine plant line. Generally, a complete aluminum profile extrusion press machine plant line system is mainly composed of mechanical part, hydraulic part and electrical part. 1. The mechanical part includes the base, guide post (also known as pull rod), front cross beam plate (referred to as front plate), rear cross beam plate (cylinder seat), insulation seat (spindle cylinder), scissors seat, die seat, upper and lower guide rail plates, manipulator ingot feeding equipment, extrusion rod seat (Butterfly head), extrusion rod and other components. 2. The hydraulic system is composed of master cylinder, auxiliary cylinder (quick side cylinder), locking cylinder (front plate cylinder), die base cylinder, plunger pump (divided into variable and quantitative pump), vane pump (divided into single pump and multi pump), valve plate, valve (one-way valve, overflow valve, reversing valve, etc.), oil pipe, oil tank and various hydraulic switches. 3. The electrical part is mainly composed of power supply cabinet, operation console, PLC programmable controller, communication contactor, display screen, etc. The functions of each primary part are as follows: 1. The base is the receiving carrier of all effects, including that the base is a closed component receiving kneading force; 2. The master cylinder is a hydraulic operation cylinder with kneading force, which is a plunger structure; 3. Guide post, also known as pull rod, the front plate and master cylinder are a closed stress system fastened with nuts through four guide posts to accept the effect pressure of hydraulic press operation. Some middle plates and butterfly plates of master cylinder move back and forth under the guidance of four guide posts. Therefore, in addition to being stressed, the tension column also acts as the guide rail of the moving beam (butterfly plate) and kneading cylinder (insulation seat). 4. The butterfly plate is a part used to balance the component of the extended part of the main plunger and control the center of the kneading shaft; 5. The insulation seat, also known as ingot container, is used to equipment aluminum ingots. It is a constant temperature container that accepts high pressure. Brief introduction to kneading principle kneading is a pressure processing method by applying pressure to one end of the ingot placed in the container (kneading cylinder) to make it pass through the mold hole. In the production of pipes and profiles with disordered cross-section, kneading is a pressure processing method. Therefore, the aluminum profile processing is completed by kneading method. Kneading method can be divided into two ways: positive kneading and negative kneading. During kneading, the moving method of the metal is the same as that of the kneading rod. The primary feature is that there is a large external conflict between the ingot and the inner wall of the kneading cylinder. During reverse kneading, the movement direction of the metal is opposite to that of kneading, which is characterized by no relative sliding between the metal and the inner wall of the kneading cylinder, and then there is no external conflict. The different characteristics of positive kneading and negative kneading have a great impact on kneading process, product quality and production power.
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