CN104690898A - Injection mold for plastic parts - Google Patents

Injection mold for plastic parts Download PDF

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Publication number
CN104690898A
CN104690898A CN201310664224.8A CN201310664224A CN104690898A CN 104690898 A CN104690898 A CN 104690898A CN 201310664224 A CN201310664224 A CN 201310664224A CN 104690898 A CN104690898 A CN 104690898A
Authority
CN
China
Prior art keywords
sprue gate
plastic parts
mold cavity
injection mold
working
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310664224.8A
Other languages
Chinese (zh)
Inventor
胡合红
Original Assignee
胡合红
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 胡合红 filed Critical 胡合红
Priority to CN201310664224.8A priority Critical patent/CN104690898A/en
Publication of CN104690898A publication Critical patent/CN104690898A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/27Sprue channels Runner channels or runner nozzles

Abstract

The invention discloses an injection mold for plastic parts. The injection mold comprises a mold cavity, a runner and a sprue gate, wherein the runner is communicated with the mold cavity through the sprue gate; the sprue gate is located below the bottom of the mold cavity; and the included angle between the sprue gate and a horizontal plane is 4-10 degrees. According to the injection mold for the plastic parts disclosed by the invention, the sprue gate is located below the bottom of the mold cavity, and is in a relatively hidden place, so that the residual stress near the sprue gate is small, and the sprue gate does not easily deform; a sprue gate mark is very small, so that the plastic parts with round covers are good in surface quality, and can meet the electroplating requirements; meanwhile, as the included angle between the sprue gate and the horizontal plane is 4-10 degrees, melt is blocked by the wall of the mold cavity when flowing out of the sprue gate, a serpentine flow line is prevented from appearing on the surface of the plastic parts with the round covers, and thus the plastic parts with the round covers are good in surface quality and can meet the electroplating requirements.

Description

A kind of working of plastics injection mould
Technical field
The present invention relates to a kind of working of plastics injection mould, particularly relate to a kind of dome working of plastics injection mould.
Background technology
Dome working of plastics 4 shape, as shown in accompanying drawing 1,2, has large and small two kinds of specifications, because surface will be electroplated, therefore requires its smooth surface, can not have the defect such as cast gate and decorative pattern.Existing dome working of plastics injection mould, sprue gate is usually located at the top of die cavity, and the surface of the dome working of plastics made of above-mentioned dome working of plastics injection mould there will be cast gate, cannot meet plating requirement.
Summary of the invention
For the technical problem of above-mentioned existence, the object of the invention is: propose a kind of working of plastics injection mould that dome plastic part surface can be avoided to occur cast gate.
Technical solution of the present invention is achieved in that a kind of working of plastics injection mould, comprises die cavity, runner and sprue gate, and described runner is communicated with die cavity by sprue gate, and described sprue gate is positioned at below cavity bottom.
Preferably, the angle of described sprue gate and horizontal plane is 4 ~ 10 °.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
A kind of working of plastics injection mould of the present invention program, because sprue gate is positioned at below cavity bottom, is in more hidden place, and residual stress is little near sprue gate, not yielding, gate vestiges is very little, make dome plastic part surface quality good, plating requirement can be met; Meanwhile, because the angle of sprue gate and horizontal plane is 4 ~ 10 °, when melt stream flows out from sprue gate, the prevention of die cavity wall can be subject to, avoid dome plastic part surface to occur snake flow liner, make dome plastic part surface quality good, plating requirement can be met.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the front view of dome working of plastics;
Accompanying drawing 2 is the left view of dome working of plastics;
Accompanying drawing 3 is the structural representation of working of plastics injection mould of the present invention;
Wherein: 1, die cavity; 2, runner; 3, sprue gate; 4, dome working of plastics.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described.
Of the present invention a kind of working of plastics injection mould as shown in Figure 3, comprises die cavity 1, runner 2 and sprue gate 3, and described runner 2 is communicated with die cavity 1 by sprue gate 3, and described sprue gate 3 is positioned at die cavity 1 bottom part down; The angle of described sprue gate and horizontal plane is 4 ~ 10 °.
Working of plastics injection mould of the present invention, because sprue gate is positioned at below cavity bottom, be in more hidden place, and near sprue gate, residual stress is little, and not yielding, gate vestiges is very little, makes dome plastic part surface quality good, can meet plating requirement; Meanwhile, the cast angle due to sprue gate is 4 ~ 10 °, when melt stream flows out from sprue gate, can be subject to the prevention of die cavity wall, avoids dome plastic part surface to occur snake flow liner, makes dome plastic part surface quality good, can meet plating requirement.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (2)

1. a working of plastics injection mould, comprises die cavity, runner and sprue gate, and described runner is communicated with die cavity by sprue gate, it is characterized in that: described sprue gate is positioned at below cavity bottom.
2. working of plastics injection mould according to claim 1, is characterized in that: the angle of described sprue gate and horizontal plane is 4 ~ 10 °.
CN201310664224.8A 2013-12-10 2013-12-10 Injection mold for plastic parts Pending CN104690898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310664224.8A CN104690898A (en) 2013-12-10 2013-12-10 Injection mold for plastic parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310664224.8A CN104690898A (en) 2013-12-10 2013-12-10 Injection mold for plastic parts

Publications (1)

Publication Number Publication Date
CN104690898A true CN104690898A (en) 2015-06-10

Family

ID=53338639

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310664224.8A Pending CN104690898A (en) 2013-12-10 2013-12-10 Injection mold for plastic parts

Country Status (1)

Country Link
CN (1) CN104690898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111361098A (en) * 2020-03-16 2020-07-03 李金国 Self-turbulent flow injection mold pouring system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202934760U (en) * 2012-12-05 2013-05-15 厦门发现者科技有限公司 Tunnel type glue feeding die structure of thin-sheet type plastic piece
CN203697396U (en) * 2013-12-10 2014-07-09 胡合红 Plastic piece injection mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202934760U (en) * 2012-12-05 2013-05-15 厦门发现者科技有限公司 Tunnel type glue feeding die structure of thin-sheet type plastic piece
CN203697396U (en) * 2013-12-10 2014-07-09 胡合红 Plastic piece injection mold

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
齐卫东: "《塑料模具设计与制造》", 31 December 2008, 高等教育出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111361098A (en) * 2020-03-16 2020-07-03 李金国 Self-turbulent flow injection mold pouring system

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Legal Events

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150610

RJ01 Rejection of invention patent application after publication