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Push mechanism and injection molding machine

A technology of ejector and ejector rod, which is applied in the field of ejector mechanism and injection molding machine, and can solve the problems of reducing the working efficiency of the injection molding machine

Active Publication Date: 2021-06-15
廊坊天龙意航汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It takes a period of time for the motor to commutate. This period of time is also called the invalid time of the ejection process. For the injection molding machine that performs continuous ejection operations, the working efficiency of the injection molding machine is reduced.

Method used

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  • Push mechanism and injection molding machine
  • Push mechanism and injection molding machine
  • Push mechanism and injection molding machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The reversing mechanism 20 includes a cam, the cam is installed on the output shaft of the motor, and the lower end of the push rod is connected to the cam surface of the cam, so that the push rod is driven to reciprocate by the rotation of the motor in one direction Linear movement (the structure of the reversing mechanism 20 of this embodiment is not shown in the accompanying drawings, however, those skilled in the art should be able to understand the working process of the reversing mechanism 20 for driving the ejector rod through the content of the above text).

Embodiment 2

[0051] Utilizing the cam as the reversing mechanism 20 can be used in the case that the reciprocating stroke of the ejector rod is relatively short. However, when the reciprocating stroke of the ejector rod is large, the overall external dimension of the cam needs to be increased, which inevitably requires increasing the power of the selected motor. . In addition, when the cam surface drives the ejector rod to reciprocate and linearly move, the energy loss and wear are relatively large.

[0052] This embodiment is set based on solving the above-mentioned problems existing in the cam as the reversing mechanism 20 . In this example, if figure 1As shown, the reversing mechanism 20 includes: a frame body 21, an actuating block 22, a gear 23 and a guide assembly. The frame body 21 is capable of reciprocating linear motion and is arranged on the holder 10. For example, a vertical plate 27 is arranged below the frame body 21, and a guide column 28 is arranged on the vertical plate ...

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Abstract

The invention discloses a push mechanism and an injection molding machine. The push mechanism comprises: a push rod whose head extends into the groove bottom of a die cavity of a lower die, and the push rod completes alignment of the lower die through reciprocating linear motion. Pushing and returning of the injection molded parts; the holding body, which is arranged under the lower mold, and maintains a relatively fixed position with the lower mold; the motor, which is arranged on the holding body; the reversing mechanism , which is used to drive the ejector rod to perform reciprocating linear motion under the condition that the direction of rotation of the motor remains unchanged. The advantage of the above-mentioned embodiment of the present invention is: by setting the reversing mechanism, the motor can realize the reciprocating drive of the ejector rod in the same rotation direction at a substantially constant speed, thereby avoiding the time taken by the motor due to deceleration and reversing Affects the efficiency of the continuous ejection operation of the injection molding machine.

Description

technical field [0001] The invention relates to a pushing mechanism for pushing injection molded parts and an injection molding machine with the pushing mechanism. Background technique [0002] Knownly, when the injection mechanism of the injection molding machine has finished filling the mold cavity formed by buckling the upper and lower molds with hot-melt raw materials and cooling them to form injection parts (the injection molded parts can be used for parts on automobiles), the head needs to be positioned The ejector part in the fixed mold (the lower mold is used as the fixed mold, and the upper mold is used as the movable mold) is driven by the driving mechanism (the ejector part is used as the working part of the ejector mechanism) to push up to eject the injection molded part, and then , the ejector part returns to its position. That is to say, the ejection part continuously completes the ejection operation of the injection molded part through the up and down recipro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/40
CPCB29C45/4005B29C2045/4042
Inventor 王春利高朋子付晓杰
Owner 廊坊天龙意航汽车部件有限公司