CN105196512A - Plastic profile extrusion die head allowing material flow speed at single arm parts to be adjusted - Google Patents

Plastic profile extrusion die head allowing material flow speed at single arm parts to be adjusted Download PDF

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Publication number
CN105196512A
CN105196512A CN201510672497.6A CN201510672497A CN105196512A CN 105196512 A CN105196512 A CN 105196512A CN 201510672497 A CN201510672497 A CN 201510672497A CN 105196512 A CN105196512 A CN 105196512A
Authority
CN
China
Prior art keywords
armed
plate
die cavity
extrusion die
gas
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
CN201510672497.6A
Other languages
Chinese (zh)
Inventor
蒋标
周珠红
查安平
徐瑞
陆跃
潘雯
李伟
陈凤琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TONGLING GREAT EXTRUSION TECHNOLOGY CO LTD
Original Assignee
TONGLING GREAT EXTRUSION TECHNOLOGY CO LTD
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 TONGLING GREAT EXTRUSION TECHNOLOGY CO LTD filed Critical TONGLING GREAT EXTRUSION TECHNOLOGY CO LTD
Priority to CN201510672497.6A priority Critical patent/CN105196512A/en
Publication of CN105196512A publication Critical patent/CN105196512A/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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/78Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865Heating
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/302Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections

Abstract

The invention discloses a plastic profile extrusion die head allowing a material flow speed at single arm parts to be adjusted. The plastic profile extrusion die head comprises a neck adapter, a support plate I, a support plate II, a compressing plate, a preforming plate and a forming plate, wherein a gas flow channel distributed in the parison flowing direction is arranged in the position, corresponding to a cavity wall, of each cavity single arm part, of the compressing plate or the preforming plate, and a gas inlet channel and a gas exhaust channel which are communicated with two ends of the gas flow channel are formed in the side wall of the compressing plate or the preforming plate and distributed sequentially in the parison flowing direction; high-temperature and high-pressure gas is guided into the gas flow channel, the cavity single arm parts are locally heated, the flowability can be improved, the temperature or pressure of input gas is adjusted, the temperature of a corresponding area of the preforming plate can be controlled, and speed control of material flow is realized.

Description

The extrusion die that plastic irregular profile single armed part stream speed is adjustable
Technical field
The present invention relates to a kind of Plastic Profile Extrusion Dies, the extrusion die that specifically a kind of plastic irregular profile single armed part stream speed is adjustable.
Background technology
For some special section bar, owing to installing or fixing needs, the single armed of the oriented outer projection of Surface of profile, as shown in Figure 7, both sides, section bar 9 upper and lower two section bar large faces 91 are respectively with single armed 92.When extruding these and there is single armed plastic irregular profile, single armed 92 outer surface is fitted with die cavity wall in extrusion die, single armed because of contact area large, along with the continuous continuity of extrusion, the precipitate that corresponding die cavity wall surface adheres to is on the increase, the frictional force of single armed position is increased, easily causes the material discharging speed of single armed part slack-off.In addition, extrusion die process conditions, formula system change, and the discharging fluctuation of single armed position also can be made larger.When the discharging of single armed position has fluctuation, after molten embryo is extruded from die head, its type flake thickness degree and die swelling all can change, and the size of type embryo and stock mould can be caused to match, there is the bad phenomenon such as shrink mark, wave after causing single armed position shaping, cause disqualification rate to rise.
Although pass through adjusting process condition, repair the modes such as the feed chamber size of mould relevant position, can temporarily solve discharging problem, but along with the wearing and tearing of mould, the change of lathe and the fluctuation of technological parameter, discharging problem there will be again, have to repeatedly adjusting process conditioned disjunction and repair mould, make with short production cycle, production efficiency is low.In addition, the repairing of mould single armed position is frequently carried out, gap is increased, cause shorten die life.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, the extrusion die that a kind of plastic irregular profile single armed part stream speed is adjustable is provided, can regulate and control die cavity single armed portion temperature according to factor of production change, change die cavity single armed partial-flow performance, make it consistent with parison flow velocity, to overcome the shaping underproof problem of the uneven single armed caused of discharging.
For achieving the above object, present invention employs following technical scheme: comprise machine neck, supporting plate one, supporting plate two, compressive plate, preformed board and profiled sheeting, it is characterized in that: compressive plate or preformed board are provided with the gas channel along flow of parison directional spreding at the die cavity pars intramuralis corresponding to each die cavity single armed part, compressive plate or preformed board sidewall have the inlet channel and exhaust passage that communicate with gas channel two ends, and inlet and outlet passage distributes successively along flow of parison direction.
Extrude there is single armed plastic irregular profile time, high temperature and high pressure gas is imported in gas channel by the inlet channel in preformed board, local heat is carried out to die cavity single armed part, its mobility can be improved, and regulate temperature or the pressure of input gas, can control preformed board respective regions temperature, the speed realizing stream controls.
Described gas channel is distributed in the one or both sides of die cavity single armed part.
Described gas channel along die cavity single armed part around distribution.
Too fast for preventing gas pressure from declining in gas channel, the bore of inlet channel is greater than exhaust passage bore.
For improving the heating effect to die cavity single armed part, the width of gas channel is not less than 3/4ths of die cavity single armed partial width.
Beneficial effect of the present invention is: by arranging the gas channel to single armed part parison temperature adjusting on compressive plate or preformed board, high temperature and high pressure gas can be imported gas channel, local heat is carried out to die cavity single armed part, to improve its mobility, thus change its mobility, make the discharging speed of single armed part consistent with parison main part discharging speed, thus overcome the shrink mark of the shaping rear appearance in single armed position, the bad phenomenon such as wave, the qualification rate of product can not only be improved significantly, and do not need adjusting process conditioned disjunction to repair mould, production cycle is extended, production efficiency increases substantially, and can die life be extended.In addition, by regulating temperature or the pressure of input gas, can control compressive plate or preformed board respective regions temperature easily, the speed realizing stream controls.
Accompanying drawing explanation
Fig. 1 is the structural representation of extrusion die of the present invention.
Fig. 2 is along A-A line sectional view in Fig. 1.
Fig. 3 is along B-B line sectional view in Fig. 1.
Fig. 4 is along C-C line sectional view figure in Fig. 1.
Fig. 5 is that another embodiment is along A-A line sectional view in Fig. 1.
Fig. 6 is that another embodiment is along A-A line sectional view in Fig. 1.
Fig. 7 is the plastic irregular profile cross section structure schematic diagram with single armed.
In figure, the implication of label symbol is as follows:
1-machine neck 2-supporting plate one 3-supporting plate two 4-compressive plate
5-preformed board 51-air inlet 52-exhaust outlet 53-gas channel 54-inlet channel 55-exhaust passage
6-profiled sheeting 7-core
8-die cavity 81-die cavity single armed part
9-section bar 91-section bar large 92-single armed
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
As shown in Figure 1, extrusion die of the present invention comprises machine neck 1, supporting plate 1, supporting plate 23, compressive plate 4, preformed board 5 and profiled sheeting 6, and core 7 is fixed on supporting plate 23.
As shown in Figures 2 to 4, the gap between the core 7 of preformed board 5 and centre is die cavity 8, and die cavity 8 has the projection extended outward to be die cavity single armed part 81 in four bights.Preformed board 5 is provided with the gas channel 53 along flow of parison directional spreding at the die cavity pars intramuralis corresponding to each die cavity single armed part 81, preformed board 5 sidewall has the inlet and outlet mouth 51,52 and inlet and outlet passage 54,55 that communicate with gas channel two ends, inlet and outlet passage 54,55 distributes successively along flow of parison direction.
During work, high temperature and high pressure gas is imported in preformed board 5 by air inlet 51, through inlet channel 54, gas channel 53, exhaust passage 55, discharged by exhaust outlet 52, the heat that high-temperature gas carries passes to the single armed part melt of die cavity by the die cavity wall of die cavity single armed part 81, heats it.By changing temperature or the pressure of gas, can change the heat carrying and enter in preformed board 5, continuing, you adjust the melt temperature of die cavity single armed part 81, reach the state that single armed discharging is consistent with its alloytype embryo.
Gas channel 53 in above-mentioned Fig. 2,3 is arranged in by the outside die cavity wall of die cavity single armed part, namely carries out temperature adjustment by outside the large face 91 of the section bar of section bar 9 to single armed 92.The opposite side die cavity wall that also according to circumstances gas channel 53 can be arranged on die cavity single armed part 81 is other as shown in Figure 5.Or gas channel 53 is set respectively on the die cavity wall side, both sides of die cavity single armed part 81, from the both sides die cavity wall of die cavity single armed part, it is heated.Gas channel 53 also can as shown in Figure 6, along die cavity single armed part 81 around distribution.
Too fast for preventing gas pressure from declining in gas channel 53, the bore of inlet channel 51 is greater than exhaust passage 52 bore.
For improving the heating effect to die cavity single armed part, the width of gas channel 53 is not less than 3/4ths of die cavity single armed part 81 width.
Gas channel 53 and corresponding air inlet 51, inlet channel 54, exhaust passage 55, exhaust outlet 52 also can be arranged in compressible sheet 4 by the present invention.

Claims (5)

1. the extrusion die that plastic irregular profile single armed part stream speed is adjustable, comprise machine neck (1), supporting plate one (2), supporting plate two (3), compressive plate (4), preformed board (5) and profiled sheeting (6), it is characterized in that: compressive plate (4) or preformed board (5) are provided with the gas channel (53) along flow of parison directional spreding at the die cavity pars intramuralis corresponding to each die cavity single armed part (81), compressive plate (4) or preformed board (5) sidewall have the inlet channel (54) and exhaust passage (55) that communicate with gas channel (53) two ends, enter, exhaust passage (54, 55) distribute successively along flow of parison direction.
2. the extrusion die that plastic irregular profile single armed part stream speed according to claim 1 is adjustable, is characterized in that: described gas channel (53) is distributed in the one or both sides of die cavity single armed part (81).
3. the extrusion die that plastic irregular profile single armed part stream speed according to claim 1 is adjustable, is characterized in that: described gas channel (53) along die cavity single armed part (81) around distribution.
4. the extrusion die that the plastic irregular profile single armed part stream speed according to claim 1 or 2 or 3 is adjustable, is characterized in that: the bore of inlet channel (54) is greater than exhaust passage (55) bore.
5. the extrusion die that the plastic irregular profile single armed part stream speed according to claim 1 or 2 or 3 is adjustable, is characterized in that: the width of gas channel (54) is not less than 3/4ths of die cavity single armed part (81) width.
CN201510672497.6A 2015-10-13 2015-10-13 Plastic profile extrusion die head allowing material flow speed at single arm parts to be adjusted Pending CN105196512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510672497.6A CN105196512A (en) 2015-10-13 2015-10-13 Plastic profile extrusion die head allowing material flow speed at single arm parts to be adjusted

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510672497.6A CN105196512A (en) 2015-10-13 2015-10-13 Plastic profile extrusion die head allowing material flow speed at single arm parts to be adjusted

Publications (1)

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CN105196512A true CN105196512A (en) 2015-12-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002561A (en) * 2019-12-31 2020-04-14 安徽耐科装备科技股份有限公司 Flow regulating device and method for multi-cavity extrusion profiled bar die head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101774268A (en) * 2010-03-05 2010-07-14 连云港杰瑞模具技术有限公司 Precise extruding mold head
CN205058546U (en) * 2015-10-13 2016-03-02 铜陵格瑞特挤出技术有限公司 Velocity of flow degree adjustable extrusion die is expected to plastic profile single armed part

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101774268A (en) * 2010-03-05 2010-07-14 连云港杰瑞模具技术有限公司 Precise extruding mold head
CN205058546U (en) * 2015-10-13 2016-03-02 铜陵格瑞特挤出技术有限公司 Velocity of flow degree adjustable extrusion die is expected to plastic profile single armed part

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杨安昌: "第三节 模头设计", 《塑料异型材挤出模技术》 *
赵国群: "《快速热循环注塑成型技术》", 30 September 2014, 北京:机械工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002561A (en) * 2019-12-31 2020-04-14 安徽耐科装备科技股份有限公司 Flow regulating device and method for multi-cavity extrusion profiled bar die head

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Application publication date: 20151230

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