Demoulding device for injection mould of heavy-duty automobile

A technology for injection molds and heavy vehicles, which is applied in the field of automotive injection parts and can solve problems such as the difficulty in returning wedge-shaped sliders and ejector plates

Inactive Publication Date: 2017-06-27
CHONGQING DAFO PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the situation that it is difficult for the wedge-shaped slider and ejector plate in the demoulding device of the existing heavy-duty automobile injection mold to return, the invention provides a demoulding device for the heavy-duty automobile injection mold with a smoother ejection and return process

Method used

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  • Demoulding device for injection mould of heavy-duty automobile
  • Demoulding device for injection mould of heavy-duty automobile
  • Demoulding device for injection mould of heavy-duty automobile

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1: as figure 1 , figure 2 As shown, a demoulding device for an injection mold of a heavy-duty vehicle includes a wedge-shaped slider 1 and a thimble plate 3 located on the front side of the wedge-shaped slider inclined surface 11. Below the wedge-shaped slider 1 is a slide rail for the wedge-shaped slider 1 to slide. 2. A number of thimbles 5 are arranged above the thimble plate 3 for ejecting the plastic parts of the bumper, and the thimble 5 is covered with a thimble return spring 5; A roller 31 is arranged to roll relative to the inclined surface 11 of the wedge-shaped slider, and there is a groove 12 on the inclined surface 11 of the wedge-shaped slider (see Figure 4 ), so that the rollers 31 can roll in the grooves 12. Of course, the grooves 12 can also be replaced with protrusions, so that the rollers 31 can be distributed on both sides of the protrusions.

[0020] In order to enable the wedge-shaped slider 1 to return to the initial position after th...

Embodiment 2

[0023] like image 3 , Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the ejector pin plate 3 is provided with a reverse wedge surface 32 that matches with the slope 11 of the wedge slider, and the pulley 31 is fixed on the reverse wedge surface 32, so that the reverse More pulleys 31 can be arranged on the wedge-shaped surface 32 . In order to further improve the stability of rolling friction, the pulley 31 is specifically a pulley set composed of a plurality of single pulleys, which can make the mutual movement between the wedge-shaped slider 1 and the ejector plate 3 smoother.

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PUM

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Abstract

The invention discloses a demoulding device for an injection mould of a heavy-duty automobile, and belongs to the technical field of automobile injection parts. The demoulding device is used for solving the problem that the situation that a demoulding device, with the adjustable ejection distance, of an injection mould of a heavy-duty automobile is prone to getting stuck in the process of returning. The demoulding device comprises a wedge-shaped sliding block and an ejector pin plate located on the front side of the slope of the wedge-shaped sliding block. A sliding rail allowing the wedge-shaped sliding block to slide is arranged below the wedge-shaped sliding block. A plurality of ejector pins used for ejecting the injection mould are arranged above the ejector pin plate. The ejector pins are sleeved with ejector pin back springs. The demoulding device is characterized in that rollers rolling relative to the slope of the wedge-shaped sliding block are arranged on the ejector pin plate; and a groove or protruding part matched with the rollers is formed in the slope of the wedge-shaped sliding block. Through rolling friction and improvement of a position returning device, the ejection and position returning processes of the demoulding device of the injection mould of the heavy-duty automobile are more stable and smoother.

Description

technical field [0001] The invention belongs to the technical field of injection molding parts for automobiles, and in particular relates to a mold release device for an injection mold of a heavy-duty automobile . Background technique [0002] A car bumper is a safety device that absorbs and mitigates external impact forces and protects the front and rear parts of the body, and plays a role in protecting people and cars. With the development of the automobile industry, automobile bumpers, as an important safety device, are also on the road of innovation. At present, in addition to maintaining the original protection function of the front and rear bumpers of the car, it is also necessary to pursue the harmony and unity with the body shape, and pursue its own lightweight. In order to achieve this purpose, the front and rear bumpers of the sedan are made of relatively common polyester and polypropylene plastics, the so-called plastic bumpers. [0003] In the manufacturing pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/40
CPCB29C45/4005
Inventor 李浩明
Owner CHONGQING DAFO PLASTIC
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