Automatic material feeding apparatus of injection molding machine

Abstract

The present invention discloses an automatic material feeding apparatus of an injection molding machine. The automatic material feeding apparatus comprises a material feeding pipe (1), wherein one end of the material feeding pipe (1) is communicated with the injection molding machine, and the other end is placed in a material storage barrel (2). The automatic material feeding apparatus is characterized in that the material feeding pipe (1) is provided with a material feeding suction head (3), a material inlet channel (3.1) is arranged inside the material feeding suction head (3), the inner wall of the material inlet channel (3.1) is provided with at least a gas nozzle (5) for pushing plastic particles (4) to move ahead toward the material out end (3.1.1) direction along the material inlet channel (3.1), the gas nozzle (5) is communicated with the external gas source through a gas pipe (6), the gas pipe (6) is provided with a gas valve, and the gas valve is electrically connected with a control system (15). The present invention provides the automatic material feeding apparatus for the injection molding machine, wherein the automatic material feeding apparatus has characteristics of simple structure, low cost, stable performance, capability of long term continuous production, and resistance of overload damage caused by pipeline clogging.

Description

technical field [0001] The invention relates to the technical field of injection molding machines, in particular to an automatic feeding device for injection molding machines. Background technique [0002] With the rapid development of injection molding machine technology, its feeding method has gradually changed from manual feeding to automatic feeding, so as to achieve high efficiency and high precision in the injection molding process. However, most of the existing automatic feeding devices for injection molding machines adopt the method of vacuuming and sucking materials, such as the patent application with the patent application number 201210095330.4. Negative pressure is generated, so that the plastic particles in the storage box are sucked into the feeding barrel on the injection molding machine through the suction pipe for injection molding. However, this type of existing automatic material suction machine often has the following disadvantages: 1) In the case of con...

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Problems solved by technology

However, this type of existing automatic material suction machine often has the following disadvantages: 1) In the case of continuous work for a long time, component damage is prone to affect the continuity of production; For powdery materials, if a large amount of powdery materials are sucked into the feeding cylinder after a certain period of time, the filter screen in the above-mentioned automatic material suction machine will be blocked, resulting in obstruction of air flow, and excessive load on the vacuum pump, which will eventually lead to failure of components. 3) The structure of the automatic suction machine is complicated, and the production cost and maintenance cost are high

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