CN104029350A - Gas-assisted core pulling mechanism for processing PP flaring pipe mold - Google Patents

Gas-assisted core pulling mechanism for processing PP flaring pipe mold Download PDF

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Publication number
CN104029350A
CN104029350A CN201410245101.5A CN201410245101A CN104029350A CN 104029350 A CN104029350 A CN 104029350A CN 201410245101 A CN201410245101 A CN 201410245101A CN 104029350 A CN104029350 A CN 104029350A
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CN
China
Prior art keywords
core
gas
pulling
air inlet
processing
Prior art date
Application number
CN201410245101.5A
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Chinese (zh)
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CN104029350B (en
Inventor
张欢庆
Original Assignee
台州市黄岩炜大塑料机械有限公司
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Priority to CN201410245101.5A priority Critical patent/CN104029350B/en
Publication of CN104029350A publication Critical patent/CN104029350A/en
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Publication of CN104029350B publication Critical patent/CN104029350B/en

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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
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • B29K2023/12PP, i.e. polypropylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles

Abstract

The invention discloses a gas-assisted core pulling mechanism for processing a PP flaring pipe mold. The gas-assisted core pulling mechanism comprises a core arranged on a mold core pulling slide block, wherein a formed PP flaring pipe is arranged outside the core; a plug is mounted at the head of the core; gas inlet holes are formed in the core; gate inserts are mounted between the core and the plug; submarine gates are formed in the gate inserts; a submarine runner is formed in the plug; and gas inlet grooves and gas inlet gaps are formed between the gate inserts and the core, and are communicated with the gas inlet holes. When the core is pulled, the core pulling slide block drives the core for pulling; meanwhile, high-pressure gas is blown in from the gas inlet holes along with the gas inlet holes, the gas inlet grooves and the gas inlet gaps to separate the flaring pipe from the core, so that the cladding force of the PP flaring pipe is relieved, little friction is generated between the core and the product, the product is not whitened and damaged through pulling, and the product quality is guaranteed.

Description

The auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould
Technical field
The auxiliary core-pulling mechanism of gas that the present invention relates to a kind of PP of processing flared pipe fitting mould, belongs to mould of plastics field.
Background technology
The plastic flared tube of being made by PP material, in the time that core is loosed core, traditional method is all to do core-pulling mechanism at product two to reach the balance of loosing core, but that shortcoming is production efficiency is slow, and mould volume is large, and injection machine used also increases, and cost is high.In order to dwindle mould volume, make mould be applicable to middle-size and small-size injection machine and produce, at present, in the time that flared pipe fitting core is loosed core, generally adopt monolateral pulled core structure.But in actual production, because PP material flexibility is large, coated power is strong, when monolateral loosing core, frictional force is large, easily makes the enlarging position of pipe fitting draw white and pull, and affects product quality, even scraps.
Summary of the invention
The object of the invention is the shortcoming in order to overcome prior art, provide a kind of in the time that core is loosed core, adopt the auxiliary structure of the monolateral aerating of loosing core, reduce core and product (particularly enlarging position) friction, make product be difficult for pulling, ensure the quality of products, improve the auxiliary core-pulling mechanism of gas of the processing PP flared pipe fitting mould of yield rate.
The technical scheme that the present invention processes the auxiliary core-pulling mechanism of gas of PP flared pipe fitting mould is: comprise the core being arranged on mould core pulling slide block, core has the PP flared pipe fitting of injection mo(u)lding outward, the head of core is installed plug, it is characterized in that being shaped with air admission hole in described core, between core and plug, gating insert is installed, tunnel gate is set in gating insert, the runner of hiding is set in plug, air inlet duct and air inlet gap are set between gating insert and core, and air inlet duct and air inlet gap are connected with air admission hole.
The invention discloses a kind of auxiliary core-pulling mechanism of gas of the PP of processing flared pipe fitting mould, main feature is that air admission hole is set in core, the head of core arranges gating insert, and air inlet duct and air inlet gap are set between gating insert and core, while loosing core, drive core-pulling slide block to slide by power, core-pulling slide block drives core to loose core, simultaneously, high pressure gas blows into from air admission hole, gas is along air admission hole, air inlet duct is blown into flared pipe fitting is separated with core gas with air inlet gap, alleviate the coated power of PP flared pipe fitting, make core and product produce minimum friction, thereby it is white that product is not drawn, do not pull, ensure product quality, improve yield rate, reduce waste, save cost.
The auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould of the present invention, the wide K of described air inlet duct can be 0.3-0.5mm, is beneficial to gas and enters.The spacing L in described air inlet gap can be 0.01-0.02mm, does not affect product injection moulding.Anti-rotation alignment pin is installed in described gating insert, is prevented that gating insert from rotating.Described plug is arranged on core head through screw, installs firmly.
Brief description of the drawings
Fig. 1 is PP flared pipe fitting mould structure schematic diagram of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to schematic cross-section;
Fig. 3 is the B place partial enlarged drawing of Fig. 1.
Detailed description of the invention
The present invention relates to a kind of auxiliary core-pulling mechanism of gas of the PP of processing flared pipe fitting mould, as shown in Figure 1-Figure 3, comprise the core 2 being arranged on mould core pulling slide block 1, core has the PP flared pipe fitting 3 of injection mo(u)lding outward, the head of core 2 is installed plug 4, in described core 2, be shaped with air admission hole 6, between core 2 and plug 4, gating insert 5 is installed, tunnel gate 11 is set in gating insert, the runner 12 of hiding is set in plug 4, air inlet duct 7 and air inlet gap 8 are set between gating insert 5 and core 2, and air inlet duct 7 and air inlet gap 8 are connected with air admission hole 6.The main feature of this programme is that air admission hole 6 is set in core 2, the head of core 2 arranges gating insert 5, and air inlet duct 7 and air inlet gap 8 are set between gating insert 5 and core 2, while loosing core, drive core-pulling slide block 1 to slide by power, core-pulling slide block 1 drives core 2 to loose core, simultaneously, high pressure gas blows into from air admission hole 6, gas is along air admission hole, air inlet duct is blown into flared pipe fitting 3 is separated with core gas with air inlet gap, alleviate the coated power of PP flared pipe fitting, make core and product produce minimum friction, thereby it is white that product is not drawn, do not pull, ensure product quality, improve yield rate, reduce waste, save cost.The wide K of described air inlet duct 7 can be 0.3-0.5mm, is beneficial to gas and enters.The spacing L in described air inlet gap 8 can be 0.01-0.02mm, does not affect product injection moulding.Anti-rotation alignment pin 9 is installed in described gating insert 5, is prevented that gating insert from rotating.Described plug 4 is arranged on core 2 heads through screw 10, installs firmly.

Claims (5)

1. the auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould, comprise the core (2) being arranged on mould core pulling slide block (1), core has the PP flared pipe fitting (3) of injection mo(u)lding outward, the head of core (2) is installed plug (4), it is characterized in that being shaped with air admission hole (6) in described core (2), between core (2) and plug (4), gating insert (5) is installed, tunnel gate (11) is set in gating insert, the runner (12) of hiding is set in plug (4), air inlet duct (7) and air inlet gap (8) are set between gating insert (5) and core (2), air inlet duct (7) and air inlet gap (8) are connected with air admission hole (6).
2. the auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould as claimed in claim 1, is characterized in that the wide K of described air inlet duct (7) is 0.3-0.5mm.
3. the auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould as claimed in claim 1, is characterized in that the spacing L in described air inlet gap (8) is 0.01-0.02mm.
4. the auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould as claimed in claim 1, is characterized in that the anti-rotation alignment pin of installation (9) in described gating insert (5).
5. the auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould as claimed in claim 1, is characterized in that described plug (4) is arranged on core (2) head through screw (10).
CN201410245101.5A 2014-06-05 2014-06-05 The gas auxiliary core-pulling mechanism of processing PP flared pipe fitting mould CN104029350B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410245101.5A CN104029350B (en) 2014-06-05 2014-06-05 The gas auxiliary core-pulling mechanism of processing PP flared pipe fitting mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410245101.5A CN104029350B (en) 2014-06-05 2014-06-05 The gas auxiliary core-pulling mechanism of processing PP flared pipe fitting mould

Publications (2)

Publication Number Publication Date
CN104029350A true CN104029350A (en) 2014-09-10
CN104029350B CN104029350B (en) 2016-08-24

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CN201410245101.5A CN104029350B (en) 2014-06-05 2014-06-05 The gas auxiliary core-pulling mechanism of processing PP flared pipe fitting mould

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101422938A (en) * 2007-11-01 2009-05-06 李新贵 Plastic die parting-plane air-admission stripper
CN201317070Y (en) * 2008-12-05 2009-09-30 张欢庆 Mold core air suction demoulding mechanism of multi-way pipe unit
CN102729417A (en) * 2011-04-07 2012-10-17 江阴市农业药械厂 Injection mold ejection device for bellows
CN202491346U (en) * 2012-03-19 2012-10-17 连云港东鼎实业有限公司 Pneumatic demolding device
CN203077518U (en) * 2013-01-15 2013-07-24 昆山正工模具有限公司 Air-assisted push-out mould
CN203937121U (en) * 2014-06-05 2014-11-12 台州市黄岩炜大塑料机械有限公司 The auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101422938A (en) * 2007-11-01 2009-05-06 李新贵 Plastic die parting-plane air-admission stripper
CN201317070Y (en) * 2008-12-05 2009-09-30 张欢庆 Mold core air suction demoulding mechanism of multi-way pipe unit
CN102729417A (en) * 2011-04-07 2012-10-17 江阴市农业药械厂 Injection mold ejection device for bellows
CN202491346U (en) * 2012-03-19 2012-10-17 连云港东鼎实业有限公司 Pneumatic demolding device
CN203077518U (en) * 2013-01-15 2013-07-24 昆山正工模具有限公司 Air-assisted push-out mould
CN203937121U (en) * 2014-06-05 2014-11-12 台州市黄岩炜大塑料机械有限公司 The auxiliary core-pulling mechanism of gas of processing PP flared pipe fitting mould

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