Metering control device for pre-molding type electric injection molding machine

A technology of control device and injection molding machine, applied in the field of metering control device, can solve the problem of high cost

Inactive Publication Date: 2009-12-30
广州博新机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as long as two sets of precise control mechanisms are used, there will be a problem of high cost.

Method used

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  • Metering control device for pre-molding type electric injection molding machine
  • Metering control device for pre-molding type electric injection molding machine
  • Metering control device for pre-molding type electric injection molding machine

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Embodiment Construction

[0021] One of the embodiments of the present invention is that the pre-molding motor adopts a common three-phase motor, and its structure is composed of a frame 1, an injection mechanism 2 and a pre-molding mechanism 3. The injection mechanism 2 and the pre-molding mechanism 3 form a triangular structure. The injection mechanism 2 is composed of a syringe 21, a precision controller 22 and an injection motor 23. The syringe 21 is composed of a plunger rod 211, an injection cylinder 212 and a ball screw 213. The pre-molding mechanism 3 is composed of a pre-molding device 31 and a pre-molding motor 32, and the pre-molding device 31 is composed of a screw 311, a pre-molding cylinder 312 and an intermediate body 313. The precision controller 22 is a servo controller or a frequency converter. The injection cylinder 212 is fixedly installed on the frame 1, and its front end communicates with the discharge port of the intermediate body 313; the rear end of the plunger rod 211 in the i...

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Abstract

The invention relates to a metering control device for a pre-molding type electric injection molding machine, which comprises a stander, an injection mechanism and a pre-molding mechanism, wherein the injection mechanism and the pre-molding mechanism form a triangular structure, an injection tube of the injection mechanism is fixedly arranged on the stander, and the front end of the injection tube is communicated with a discharge port of an intermediate body of the pre-molding mechanism; and the rear end of a movable plunger rod positioned in the injection tube can be mutually matched with a ball screw to propel each other. The front end of the ball screw is provided with a sensing device which can receive the position information of the plunger rod and transmit the position information to a central controller of the machine; and the ball screw is driven by an injection motor. The metering control device achieves the aim of metering control by using a precise control device of the injection mechanism according to the characteristics that the injection mechanism and the pre-molding mechanism of the pre-molding type electric injection molding machine are respectively independent in mechanical construction, avoids the necessary of adopting two sets of precise control mechanisms to the pre-molding actions and injection actions structurally, and can reduce the facility cost while achieving the aim of the same precise control.

Description

technical field [0001] The invention relates to a metering control device of an injection molding machine. More precisely, the present invention relates to a metering control device for a pre-molded electric injection molding machine. technical background [0002] During the operation of the injection molding machine, it is necessary to pre-measure the amount of plastic for each injection, and then inject the measured plastic into the mold for molding. In the existing electric injection molding machines, the precision control of the metering action and the injection action is generally realized through independent servo motor drive mechanisms. [0003] The specific measurement method is: [0004] 1) Metering action: The servo motor is used to directly drive the screw to rotate. While plasticizing the plastic raw materials, the position mode control method of the servo motor is used to calculate and control the amount of screw rotation to achieve precise control of the mete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76
Inventor 杨青
Owner 广州博新机械有限公司
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