Unlock instant, AI-driven research and patent intelligence for your innovation.

Mold cavity vacuum pumping mechanism of BMC injection molding product

A technology for vacuuming injection molding products, which is applied in the field of cavity vacuuming mechanisms, which can solve problems such as residue, incomplete vacuuming, and small exhaust gaps, and achieve the effects of reducing the probability of damage, saving labor costs, and improving the yield rate

Active Publication Date: 2016-11-09
创意塑胶工业(苏州)有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing process, the cavity of the BMC injection molding product is vacuumed by placing the air needle on the outside of the cavity, and the air needle communicates with the cavity through the exhaust gap. This has several disadvantages: 1. The exhaust gap is too small, and the pumping The vacuum is not thorough and there are residues; 2. The size of the exhaust gap is not easy to control. When the gap is too large, the product will have burrs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mold cavity vacuum pumping mechanism of BMC injection molding product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0031] The technical scheme of concrete implementation of the present invention is:

[0032] Such as figure 1 As shown, a cavity vacuum mechanism for BMC injection molding products, including:

[0033] Flat upper mold core 1,

[0034] The lower die core 2 that cooperates with the upper die core 1,

[0035] The mold cavity formed by the closure of the upper mold core 1 and the lower mold core 2,

[0036] A flat backing plate 3 for fixing the lower die core 2,

[0037] A flat fixing plate 4 for fixing the backing plate 3,

[0038] The vertical insert 5 inserted into the lower die core 2,

[0039] And the vertical ejector pin 6 that is used to eject the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a mold cavity vacuum pumping mechanism of a BMC injection molding product. The mechanism comprises a flat upper mold core, a flat lower mold core matched with the upper mold core, a mold cavity formed by closing of the upper mold core and the lower mold core, a flat pad plate used for fixing the lower mold core, a flat fixing plate used for fixing the pad plate, a vertical insert embedded into the lower mold core and a vertical ejecting rod ejecting the product upwards during mold opening. The mold cavity vacuum pumping mechanism of the BMC injection molding product is reasonable in structure, and during injection molding, gas in the mold cavity can be exhausted out.

Description

technical field [0001] The invention relates to a vacuum pumping mechanism for a mold cavity of a BMC injection molding product. Background technique [0002] BMC is the acronym for Bulk Molding Compound in English, and the Chinese name is Bulk Molding Compound. BMC is a molded intermediate material for glass fiber reinforced thermosetting products produced by a semi-dry method. It is pre-mixed into a paste by unsaturated polyester resin, low shrinkage / low profile additives, initiators, internal mold release agents, and mineral fillers. Thickeners, colorants, etc. are added, and glass fibers of different lengths are stirred in a special material kettle for thickening, and finally a dough-like intermediate material is formed, which can be used for molding and injection molding. [0003] In the existing process, the cavity of the BMC injection molding product is vacuumed by placing the air needle on the outside of the cavity, and the air needle communicates with the cavity th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C45/34
CPCB29C45/34
Inventor 何来
Owner 创意塑胶工业(苏州)有限公司