Graphite electrode molding machine

Abstract

The invention provides a graphite electrode molding machine, relating to a press machine using a press head. A graphite electrode of the graphite electrode molding machine has a dimension of phi 820-1400 mm. The graphite electrode molding machine is provided with an electrode trolley, a vacuum system, a hydraulic system, an electric control system, a frame, a rubber spring stand, a mold, an upper press head, a material cooling system, an upper trolley, a core column and a central frame, a turnover mechanism, a lower press head and a vibrating motor. A rotating shaft of the mold is arranged on the rubber spring stand; a paste outlet of the material cooling system is connected with the mold by a belt machine; the upper press head and the lower press head are connected with the mold; the upper trolley is arranged on a track of the frame; the upper press head as well as the core column and the central frame are arranged on the upper trolley; the vibrating motor is used as a vibration source and arranged on the two sides of the mold; the vibrating motor is arranged in the middle of the graphite electrode; connecting teeth are arranged on both the upper press head and the mold; the upper press head is connected with the mold after rotating for 15 degrees; the lower press head is fixedly mounted at the lower part of the mold; and the turnover mechanism is connected with the material cooling system.

Description

technical field [0001] The invention relates to a press machine using a pressure head, in particular to a graphite electrode forming machine. Background technique [0002] Artificial graphite electrodes have the characteristics of high temperature resistance, oxidation resistance, and low ash content. They are widely used in electric arc furnace metal smelting. The production process of electrodes is divided into four processes: forming, roasting, graphitization, and machining. [0003] The main equipment in the molding process is the molding machine equipment. [0004] Extrusion molding equipment is mainly large-scale presses. At present, the largest press in China is 4,000 tons, and the maximum diameter of the formed product is 750mm; and the equipment is expensive. If an electrode with a larger diameter is produced, the press must exceed 10,000 tons. [0005] With the development of technology, especially the advancement of silicon smelting technology, small-sized elect...

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Problems solved by technology

[0006] Another type of molding equipment is a vibration molding machine. Although the structure of the traditional vibration molding machine is relatively simple, it is heavy, consumes a lot of energy, and has poor product quality uniformity.

[0007] Existing pressurization pressure is mainly generated by heavy hammers. Although tens of tons of heavy hammers are used, only a few kilograms of pressure can be generated, and the specific pressure is generally 3 to 4kg / cm 2

Secondly, since molds, racks, and heavy hammers are all placed on the vibrating platform, the load on the platform is greatly increased, and a lot of energy is wasted.

In addition, since the vibrating eccentric mechanism is placed under the platform, the maintenance of its bearings is very large, which greatly increases the difficulty of mechanical maintenance

At the same time, due to the shape of the mold and other reasons, it is very difficult to achieve vacuum forming. Even if there is vacuum equipment, the vacuum degree is very low; because the mold is placed on the platform, the bottom of the product is subjected to mechanical vibration force, and the top of the product is under pressure. Because of the difference in strength and strength, the vibration force of the upper and lower machines of the product is quite different, and the uniformity of the product density is poor.

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