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Inclined top internal double-bouncing-needle reverse buckle removing structure

A double-ejection needle and an elastic needle technology, which is applied in the field of oblique ejection needle mechanism, can solve the problems of inability to balance processing quality and ejection efficiency, poor product positioning ability, and ejection needle position interference, etc., and achieve high ejection and ejection. The effect of inverting, improving the quality of demolding, and preventing the speed from being too fast

Pending Publication Date: 2022-05-31
ZHEJIANG KAIHUA MOLDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: for long arc-shaped injection molding products, when the inclined top is ejected, it is pushed on one side, and a slider is set inside the inclined top. The arc surface structure of the injection molded product between the slider and the inclined top needs Only multiple spring pins can ensure the limit, but the combination of multiple spring pins at different angles will cause positional interference between the spring pins, which cannot be retracted at the same time, and it is inconvenient to take off the buckle; It will cause poor elasticity to limit the product. Therefore, when the long arc surface structure is combined with the inclined roof, there is a problem that the processing quality and the ejection efficiency cannot be balanced.

Method used

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  • Inclined top internal double-bouncing-needle reverse buckle removing structure
  • Inclined top internal double-bouncing-needle reverse buckle removing structure
  • Inclined top internal double-bouncing-needle reverse buckle removing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like Figures 1 to 6As shown in the figure, there is a structure with double spring needles inside the slanting top, which includes the slanting head 1, and two sets of slanting rods 2 are connected to the lower end of the slanting head 1. A mold cavity 3 is arranged inside the upper end of the inclined plug 1, and a push block 4 is arranged in the mold cavity 3, and an edge forming surface is formed between the upper end of the push block and the inclined plug. The cavity between the upper side of the push block 4 and the upper side of the mold cavity 3 is the molding space of the product 20 . A first elastic pin 5 is arranged inside the inclined plug 1 , and a second elastic pin 6 abutting against the head of the first elastic pin 5 is arranged inside the push block 4 . The head of the second spring pin is located in the edge forming surface. The first elastic pin 5 and the second elastic pin 6 are in series structure, the first elastic pin 5 is provided with two gr...

Embodiment 2

[0034] A double spring pin inside the inclined top buckle structure, the difference between embodiment 2 and embodiment 1 is that, as Figure 7 and Figure 8 As shown, the lower end of the guide sleeve 8 of the first spring pin 5 is provided with an adjusting ring 21 inside, and the adjusting ring 21 is corresponding to the circumferential surface of the radial limit surface 31, and the inner side of the adjusting ring 21 is provided with several matching limit The spring 22 is provided with a number of limit grooves 23 corresponding to the adjustment ring on the radial limit surface, and the fixing block of the first spring pin is provided with an adjustment groove matching the adjustment ring. The lower end of the guide sleeve of the first spring pin is provided with a mounting hole 24 inside, and the mounting hole is a blind hole. An adjusting screw 25 is provided for coaxial rotation in the mounting hole, and the upper end of the adjusting screw 25 is provided with an annu...

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Abstract

The invention discloses a pitched roof internal double-elastic-needle reverse buckle removing structure which comprises a pitched roof head, a mold cavity is formed in the upper end of the pitched roof head, a push block is arranged in the mold cavity, an edge forming face is formed between the upper end of the push block and the pitched roof head, a first elastic needle is arranged in the pitched roof head, and a second elastic needle abutting against the head of the first elastic needle is arranged in the push block. The head of the second elastic needle is located in the edge forming face. The double-bouncing-needle structure is arranged in a series connection mode, the counterpoint synergistic effect can be achieved, the segmented secondary ejection effect is formed, and the higher demolding and reverse buckle removing functions are achieved; the elastically-arranged adjusting ring is matched with the adjusting groove to offset the initial elastic force generated when the first elastic needle is reset and popped out, the situation that the popping speed of the first elastic needle is too high is prevented, and the demolding quality is improved.

Description

technical field [0001] The present application relates to the technical field of a slanted top spring mechanism, and in particular to an internal double spring pin release and undercut structure of a slanted top. Background technique [0002] Injection molding is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain complex-shaped parts. The injection molding machine injects into the mold cavity under high pressure, and after cooling and solidifying, the molded product is obtained. Existing injection molds generally use an inclined ejector mechanism to eject products when they are injecting products with undercuts. However, when some injection molded parts with undercuts are demolded, the undercuts may stick to the inclined roof. As the demoulding progresses, the inclined roof will retreat, and the undercuts will be deformed...

Claims

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Application Information

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IPC IPC(8): B29C45/44
CPCB29C45/4435
Inventor 梁正华梁凯王华良林连明
Owner ZHEJIANG KAIHUA MOLDS
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