CN105014906B - A kind of forming method of section bar - Google Patents
A kind of forming method of section bar Download PDFInfo
- Publication number
- CN105014906B CN105014906B CN201510454879.1A CN201510454879A CN105014906B CN 105014906 B CN105014906 B CN 105014906B CN 201510454879 A CN201510454879 A CN 201510454879A CN 105014906 B CN105014906 B CN 105014906B
- Authority
- CN
- China
- Prior art keywords
- section bar
- inner muscle
- cavity
- cooling
- extrusion
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of forming method of section bar, the section bar includes outer wall and is arranged at the Inner muscle of the outer pars intramuralis, it is characterised in that comprise the following steps：1）Inner muscle is made by extrusion die, after standby after Inner muscle cooling and shapings；2）By the Inner muscle after feed inlet end is inserted in the cavity of co-extrusion die head, outer wall section bar base-material is added into co-extrusion die head, Inner muscle is extruded jointly with melting outer wall parison, cooling and shaping.The step extrusion of section bar is improved to two steps extrusion by the forming method, and the problem of solving section bar Inner muscle cooling difficulties is convenient and easy with reasonable in design, with low cost, and production efficiency is high, the advantages of yield is big.
Description
Technical field
The present invention relates to architectural shape, a kind of forming method of section bar is specifically provided.
Background technology
Section bar is essential construction material in building trade, at present, and section bar can be by rolling, extrusion, the work such as casting
Skill is made, and is extruded as relatively conventional processing technology.
Generally, there is the multi-cavity structure formed by Inner muscle in section bar, and section bar is in process of production, Inner muscle can not be with cooling
Stock mould cooling end is directly contacted, and causes amount of heat to be gathered in inside section bar, and cooling effectiveness is substantially reduced.In order to solve section bar
The problem of Inner muscle is cooled down, it has to increase the length of cooler-shaper or reduce the speed of production of product, have a strong impact on
The production cost and speed of production of manufacturer.
Therefore, the cooling velocity for how solving above-mentioned section bar Inner muscle is slow, as people's urgent problem to be solved.
The content of the invention
In consideration of it, it is an object of the invention to provide a kind of forming method of section bar, at least to solve Inner in conventional section bar
The cooling velocity of muscle is slow, the problem of causing the high production cost of section bar or slow speed of production.
The technical scheme that the present invention is provided, specifically, a kind of forming method of section bar, the section bar includes outer wall and set
It is placed in the Inner muscle of the outer pars intramuralis, it is characterised in that comprise the following steps：
1）Inner muscle is made by extrusion die, after standby after Inner muscle cooling and shapings；
2）By the Inner muscle after feed inlet end is inserted in the cavity of co-extrusion die head, outer wall section bar is added into co-extrusion die head
Base-material, Inner muscle is extruded jointly with melting outer wall parison, cooling and shaping.
It is preferred that, the temperature in the co-extrusion die head is 180 ~ 200 DEG C, and the melt pressure of co-extrusion die head is 200 ~ 400bar.
Further preferably, the co-extrusion get to know including the machine neck 1 being sequentially connected, rebound 2, compression plate 3, preformed board 4,
It is provided with sprue 11, the rebound 2 and is provided with and the sprue in profiled sheeting 5 and mouth template 6, the machine neck 1
The spreader 41 being protruding in the sprue 11 of the machine neck 1 is provided with the middle of 11 runners 21 communicated, the preformed board 4
And be provided with the spreader 41 in the middle of first cavity 411, the mouth template 6 and be provided with core 61, set on the core 61
Be equipped with the second cavity 611, described one end of core 61 extend in the die cavity of the profiled sheeting 5 and the preformed board 4 with it is described
Spreader 41 connects, and the second cavity 611 of the core 61 is communicated with the first cavity 411 of the spreader 41, for Inner
The placement of muscle.
The forming method for the section bar that the present invention is provided, two step extrusion moldings are improved to by a step extrusion molding of traditional section bar, will
The Inner muscle that can not be directly contacted with cooling end in cooler-shaper is extruded in advance, cooling fully after, then with the outer wall one in section bar
With extrusion, because section bar Inner muscle has been cooled down fully, therefore the cooling of section bar outer wall need to be only carried out, you can, and then effectively solve
Cooling problem in product moulding, need not both lengthen the length of cooler-shaper, without the speed of production of reduction section bar.
The forming method for the section bar that the present invention is provided, convenient and easy with reasonable in design, with low cost, production efficiency is high,
The advantages of yield is big.
Brief description of the drawings
Fig. 1 is the structural representation of co-extrusion die head；
Fig. 2 is the structural representation of section bar.
Embodiment
The present invention is further expalined with reference to specific embodiment, but be not intended to limit the invention
Protection domain.
During in order to solve that section bar is carried out into step extrusion in the prior art, because the Inner muscle in section bar can not be with cooling and shaping
Cooling position in mould is directly contacted, and causes amount of heat to be gathered in inside section bar, causes the Inner muscle cooling velocity of section bar slow,
Production firm has to that the problem of pattern lengthens or reduces speed of production will be cooled to, and present embodiment provides a kind of section bar
Forming method, changes into active cooling by passive cooling by the Inner muscle in section bar, a conventional step extrusion molding is improved into two steps
Extrusion molding, the section bar includes outer wall and is arranged at the Inner muscle of the outer pars intramuralis, and specific forming step includes：
1）Inner muscle is made by extrusion die, after standby after Inner muscle cooling and shapings；
2）By the Inner muscle after feed inlet end is inserted in the cavity of co-extrusion die head, outer wall section bar is added into co-extrusion die head
Base-material, Inner muscle is extruded jointly with melting outer wall parison, cooling and shaping.
In the forming method, the Inner muscle that can not be directly contacted with the cooling end being cooled in pattern in the past has been prepared first
Into and after cooling and shaping, then muscle in finished product being put into the cavity left in advance according to Inner muscle position in co-extrusion die head, then
Outer wall section bar base-material is added, Inner muscle is extruded jointly with outer wall, now, cooling and shaping is finished due to Inner muscle, it is only necessary to
The cooling and shaping of section bar outer wall is carried out, and the outer wall of section bar can directly connect with the cooling end in cooling shaping mould
Touch, shorten cool time, substantially increase production efficiency and reduce die cost.In the case that speed of production is certain,
The length of cooler-shaper is shortened, and reduces the cost of mould；In the case that cooler-shaper length is certain, it can improve
Extruded velocity 30% ~ 40%.
Wherein, step 1）In in muscle be made by what extrusion die was produced, due to the simple shape of interior muscle, lead to
Often be " one " font, thickness is thin, generally only between 0.8 ~ 1.2mm, so involved production equipment and mould nor
It is often simple.Equipment aspect, all extruders for producing PVC profile are suitable for the production of the interior muscle；In terms of mould, one
The die head of 130mm or so length（Die head length can be variant because of each mould producer design concept difference）, an easy cooling
Device（The cooler-shaper of 1 100mm length, the bosh of a 1m length）It can reach the production need for producing the interior muscle
Will.In addition, the Inner muscle can also direct outsourcing finished product.
Step 2）For in co-extrusion production process, wherein, it is preferable that co-extrusion die head temperature is 180 ~ 200 DEG C, co-extrusion die head melt
Pressure is 200 ~ 400bar, and other production processes of co-extrusion use normal production technology, and each producer is different because of condition, raw
Production. art has a little difference, but the quality of product can't be had a huge impact.Step 2 in fact）Simply by altogether
The Normal practice of extrusion die head, is that muscle reserves cavity in die head in finished product, when mould start traction section bar when, by muscle in finished product with
Melting outer wall parison is together pulled out.
The method for forming section provided using the present embodiment（Two-step method）The section bar produced, will not be to providing in national standard
Appearance and size, impact resistance, weldability, ageing resistance produces any influence, complies fully with requirement of the national standard to section bar.
Wherein, the co-extrusion is got to know concrete structure, reference can be made to Fig. 1, the co-extrusion get to know including be sequentially connected machine neck 1,
Sprue 11, the mistake are provided with rebound 2, compression plate 3, preformed board 4, profiled sheeting 5 and mouth template 6, the machine neck 1
It is provided with to be provided with the middle of the runner 21 communicated with the sprue 11, the preformed board 4 on cab apron 2 and is protruding to the machine
It is provided with the middle of the first cavity 411, the mouth template 6 and sets on spreader 41 and the spreader 41 in the sprue 11 of neck 1
It is equipped with core 61, the core 61 and is provided with the second cavity 611, described one end of core 61 extends to the profiled sheeting 5 and institute
Connect in the die cavity for stating preformed board 4 with the spreader 41, and the second cavity 611 of the core 61 and the spreader 41
The first cavity 411 communicate, the placement for Inner muscle.
Embodiment 1
Section bar as shown in Figure 2 is made, the section bar includes the outer wall A and Inner muscle B being arranged inside the outer wall A, tool
The forming step of body is：
1）Inner muscle base-material is injected in die head, will be melted after Inner muscle parison extrusion by extruder, and be put into cooler-shaper
Middle carry out cooling and shaping, wherein, the Inner muscle is " one " font；
2）By the Inner muscle after above-mentioned cooling and shaping after feed inlet end is inserted in the reserved cavity of co-extrusion die head, to coextruding die
Outer wall section bar base-material is added in head, by Inner muscle with after melting outer wall parison jointly extrusion, outer wall is carried out by cooler-shaper
Cooling and shaping, wherein, co-extrusion die head temperature is 180 ~ 200 DEG C, and co-extrusion die head melt pressure is 200 ~ 400bar.
Wherein, the co-extrusion is got to know including the machine neck 1 being sequentially connected, rebound 2, compression plate 3, preformed board 4, profiled sheeting
5 and mouth template 6, it is provided with to be provided with sprue 11, the rebound 2 in the machine neck 1 and is communicated with the sprue 11
Runner 21, the spreader 41 that is protruding in the sprue 11 of the machine neck 1 is provided with the middle of the preformed board 4 and described
It is provided with spreader 41 in the middle of first cavity 411, the mouth template 6 and is provided with core 61, is provided with the core 61
Two cavitys 611, described one end of core 61 is extended in the die cavity of the profiled sheeting 5 and the preformed board 4 and the spreader
41 connect, and the second cavity 611 of the core 61 is communicated with the first cavity 411 of the spreader 41, for putting for Inner muscle
Put.
Performance detection is carried out to the section bar made in the present embodiment, national standard is complied fully with：《GB/T 8814-2004
Door, window not plasticized polyvinyl chloride (PVC-U) section bar》In specific requirement.
Claims (1)
1. a kind of forming method of section bar, the section bar includes outer wall and is arranged at the Inner muscle of the outer pars intramuralis, its feature
It is, comprises the following steps：
1）Inner muscle is made by extrusion die, after standby after Inner muscle cooling and shapings；
2）By the Inner muscle after feed inlet end is inserted in the cavity of co-extrusion die head, outer wall section bar base is added into co-extrusion die head
Material, Inner muscle is extruded jointly with melting outer wall parison, cooling and shaping；
Temperature in the co-extrusion die head is 180 ~ 200 DEG C, and melt pressure is 200 ~ 400bar；
The co-extrusion is got to know including the machine neck being sequentially connected（1）, rebound（2）, compression plate（3）, preformed board（4）, profiled sheeting
（5）And mouth template（6）, the machine neck（1）Inside it is provided with sprue（11）, the rebound（2）On be provided with and the master
Runner（11）The runner communicated（21）, the preformed board（4）Centre, which is provided with, is protruding to the machine neck（1）Sprue
（11）Interior spreader（41）And the spreader（41）On be provided with the first cavity（411）, the mouth template（6）Centre is set
There is core（61）, the core（61）On be provided with the second cavity（611）, the core（61）One end extends to the profiled sheeting
（5）With the preformed board（4）Die cavity in the spreader（41）Connect, and the core（61）The second cavity
（611）With the spreader（41）The first cavity（411）Communicate, the placement for Inner muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454879.1A CN105014906B (en) | 2015-07-29 | 2015-07-29 | A kind of forming method of section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454879.1A CN105014906B (en) | 2015-07-29 | 2015-07-29 | A kind of forming method of section bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105014906A CN105014906A (en) | 2015-11-04 |
| CN105014906B true CN105014906B (en) | 2017-08-25 |
Family
ID=54405374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510454879.1A Expired - Fee Related CN105014906B (en) | 2015-07-29 | 2015-07-29 | A kind of forming method of section bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105014906B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6458301B1 (en) * | 2001-08-27 | 2002-10-01 | Schlegel Corporation | Method for forming weatherseals from an interchangeable insert die assembly |
| US7591903B2 (en) * | 2002-08-13 | 2009-09-22 | 3M Innovative Properties Company | Die having multiple orifice slot |
| JP5556611B2 (en) * | 2009-12-25 | 2014-07-23 | 豊田合成株式会社 | Manufacturing method of insert and manufacturing method of long molded product having the insert |
| CN102079127A (en) * | 2010-12-02 | 2011-06-01 | 铜陵三佳科技股份有限公司 | Method for forming section with plastic lining and extrusion die head thereof |
| JP5770361B2 (en) * | 2011-04-18 | 2015-08-26 | ミリケン・アンド・カンパニーＭｉｌｌｉｋｅｎ ＆ Ｃｏｍｐａｎｙ | Split conduit and forming process |
| CN203357844U (en) * | 2013-06-25 | 2013-12-25 | 天津远创模具制造有限公司 | Rigid plastic profiled material and rigid plastic profiled material co-extrusion system |
-
2015
- 2015-07-29 CN CN201510454879.1A patent/CN105014906B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN105014906A (en) | 2015-11-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |