CN105014906A - Molding method of section - Google Patents
Molding method of section Download PDFInfo
- Publication number
- CN105014906A CN105014906A CN201510454879.1A CN201510454879A CN105014906A CN 105014906 A CN105014906 A CN 105014906A CN 201510454879 A CN201510454879 A CN 201510454879A CN 105014906 A CN105014906 A CN 105014906A
- Authority
- CN
- China
- Prior art keywords
- section bar
- cavity
- inner muscle
- wall
- extrusion die
- 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.)
- Granted
Links
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
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- 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
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- 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
Abstract
The invention discloses a molding method of a section. The section comprises an outer wall and an inner rib in the outer wall. The molding method is characterized by comprising the following steps that (1) the inner rib is manufactured through an extruding die, and the inner rib is cooled and shaped for use; and (2) after the inner rib is inserted in a cavity of a co-extrusion die head through the feeding opening end, outer wall section base materials are added into the co-extrusion die head, the inner rib and a fused outer wall parison are extruded together, and cooling and shaping are carried out. According to the molding method, one-step extrusion of the section is changed into two-step extrusion, the problem that the inner rib of the section is hard to cool is solved, and the molding method has the advantages of being reasonable in design, convenient and feasible, low in cost, high in production efficiency, high in yield and the like.
Description
Technical field
The present invention relates to architectural shape, specifically provide a kind of forming method of section bar.
Background technology
Section bar is requisite construction material in building trade, and at present, the techniques such as section bar, by rolling, is extruded, casting are made, and extrude as comparatively common processing technology.
Usually, have the multi-cavity structure formed by Inner muscle in section bar, and section bar in process of production, Inner muscle directly cannot contact with cooler-shaper cooling end, causes amount of heat to be gathered in section bar inside, and cooling effectiveness reduces greatly.In order to solve the problem of section bar Inner muscle cooling, having to increase the length of cooler-shaper or reduce the speed of production of product, having had a strong impact on production cost and the speed of production of manufacturer.
Therefore, the cooling velocity how solving above-mentioned section bar Inner muscle is slow, becomes people's problem demanding prompt solution.
Summary of the invention
Given this, the object of the present invention is to provide a kind of forming method of section bar, slow with the cooling velocity at least solving Inner muscle in section bar in the past, cause the problem that the production cost of section bar is high or speed of production is slow.
Technical scheme provided by the invention, is specially, a kind of forming method of section bar, and described section bar comprises outer wall and is arranged at the Inner muscle of described outer pars intramuralis, it is characterized in that, comprises the following steps:
1) Inner muscle is made by extrusion die, for subsequent use after Inner muscle cooling and shaping;
2) by described Inner muscle from feed inlet end insert co-extrusion die head cavity in after, in co-extrusion die head, add outer wall section bar base-material, Inner muscle and melting outer wall parison extruded jointly, cooling and shaping.
Preferably, the temperature in described co-extrusion die head is 180 ~ 200 DEG C, and the melt pressure of co-extrusion die head is 200 ~ 400bar.
Further preferably, described co-extrusion is got to know the machine neck 1 comprising and connecting successively, rebound 2, compressive plate 3, preformed board 4, profiled sheeting 5 and mouth template 6, sprue 11 is provided with in described machine neck 1, described rebound 2 is provided with the runner 21 communicated with described sprue 11, be provided with the spreader 41 in the sprue 11 being protruding to described machine neck 1 and described spreader 41 be provided with the first cavity 411 in the middle of described preformed board 4, core 61 is provided with in the middle of described mouth template 6, described core 61 is provided with the second cavity 611, connect with described spreader 41 in the die cavity that described core 61 one end extends to described profiled sheeting 5 and described preformed board 4, and the second cavity 611 of described core 61 communicates with the first cavity 411 of described spreader 41, for the placement of Inner muscle.
The forming method of section bar provided by the invention, one step extrusion molding of traditional section bar is improved to two step extrusion moldings, the Inner muscle that directly cannot contact with cooling end in cooler-shaper is extruded in advance, after cooling fully, more together extrudes with the outer wall in section bar, because section bar Inner muscle has cooled fully, therefore the cooling of section bar outer wall need only be carried out, and then efficiently solve the cooling problem in product moulding, both without the need to lengthening the length of cooler-shaper, also without the need to reducing the speed of production of section bar.
The forming method of section bar provided by the invention, has reasonable in design, the advantages such as convenient and easy, with low cost, production efficiency is high, and output is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of co-extrusion die head;
Fig. 2 is the structural representation of section bar.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further expalined, but is not limited to protection scope of the present invention.
In order to solve in prior art section bar is carried out a step extrude time, because the Inner muscle in section bar directly cannot contact with the cooling position be cooled in pattern, and cause amount of heat to be gathered in section bar inside, cause the Inner muscle cooling velocity of section bar slow, production firm has to lengthen being cooled to pattern or reducing the problem of speed of production, present embodiment provides a kind of forming method of section bar, Inner muscle in section bar is changed into active cooling by passive cooling, a step extrusion molding is in the past improved to two step extrusion moldings, this section bar comprises outer wall and is arranged at the Inner muscle of described outer pars intramuralis, concrete forming step comprises:
1) Inner muscle is made by extrusion die, for subsequent use after Inner muscle cooling and shaping;
2) by described Inner muscle from feed inlet end insert co-extrusion die head cavity in after, in co-extrusion die head, add outer wall section bar base-material, Inner muscle and melting outer wall parison extruded jointly, cooling and shaping.
In this forming method, first the Inner muscle that in the past directly cannot contact with the cooling end be cooled in pattern has been prepared, and after cooling and shaping, again muscle in finished product is put into the cavity that co-extrusion die head leaves in advance according to Inner muscle position, and then add outer wall section bar base-material, Inner muscle and outer wall are extruded jointly, now, due to Inner muscle, cooling and shaping is complete, only need the cooling and shaping carrying out section bar outer wall, and the outer wall of section bar directly can contact with the cooling end in cooling shaping mould, shorten cool time, substantially increase production efficiency and reduce die cost.When speed of production is certain, the length of cooler-shaper is shortened, and reduces the cost of mould; When cooler-shaper length is certain, extruded velocity 30% ~ 40% can be improved.
Wherein, in step 1), the making of muscle is produced by extrusion die, and due to the simple shape of interior muscle, be generally " one " font, thickness is thin, usually only between 0.8 ~ 1.2mm, so involved production equipment and mould are also very simple.Equipment aspect, all extruders for the production of PVC profile are all applicable to the production of this interior muscle; Mould aspect, the die head (die head length is understood variant because each mould producer design concept is different) of about a 130mm length, an easy cooling device (cooler-shaper that 1 100mm is long, the bosh that a 1m is long) can reach the need of production producing this interior muscle.In addition, this Inner muscle also can direct outsourcing finished product.
Step 2) in co-extrusion production process, wherein, preferably, 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 all adopt normal production technology, and each producer is because of condition difference, production technology has a little difference, but can't have a huge impact the quality of product.Step 2 in fact) just by the Normal practice of co-extrusion die head, in finished product, muscle reserves cavity in die head, when mould start traction section bar, muscle in finished product and melting outer wall parison are together pulled out.
The section bar that the method for forming section (two-step method) using the present embodiment to provide is produced, can not to the appearance and size specified in GB, and impact resistance, weldability, ageing resistance produces any impact, meets the requirement of GB to section bar completely.
Wherein, described co-extrusion is got to know concrete structure, can see Fig. 1, described co-extrusion is got to know the machine neck 1 comprising and connecting successively, rebound 2, compressive plate 3, preformed board 4, profiled sheeting 5 and mouth template 6, sprue 11 is provided with in described machine neck 1, described rebound 2 is provided with the runner 21 communicated with described sprue 11, be provided with the spreader 41 in the sprue 11 being protruding to described machine neck 1 and described spreader 41 be provided with the first cavity 411 in the middle of described preformed board 4, core 61 is provided with in the middle of described mouth template 6, described core 61 is provided with the second cavity 611, connect with described spreader 41 in the die cavity that described core 61 one end extends to described profiled sheeting 5 and described preformed board 4, and the second cavity 611 of described core 61 communicates with the first cavity 411 of described spreader 41, for the placement of Inner muscle.
Embodiment 1
Make section bar as shown in Figure 2, this section bar comprises outer wall A and is arranged at the Inner muscle B of described outer wall A inside, and concrete forming step is:
1) Inner muscle base-material is injected die head, after being extruded by melting Inner muscle parison by extruder, put into cooler-shaper and carry out cooling and shaping, wherein, this Inner muscle is " one " font;
2) by the Inner muscle after above-mentioned cooling and shaping from feed inlet end insert co-extrusion die head reserved cavity in after, outer wall section bar base-material is added in co-extrusion die head, after Inner muscle and melting outer wall parison are extruded jointly, the cooling and shaping of outer wall is carried out by cooler-shaper, wherein, co-extrusion die head temperature is 180 ~ 200 DEG C, and co-extrusion die head melt pressure is 200 ~ 400bar.
Wherein, described co-extrusion is got to know the machine neck 1 comprising and connecting successively, rebound 2, compressive plate 3, preformed board 4, profiled sheeting 5 and mouth template 6, sprue 11 is provided with in described machine neck 1, described rebound 2 is provided with the runner 21 communicated with described sprue 11, be provided with the spreader 41 in the sprue 11 being protruding to described machine neck 1 and described spreader 41 be provided with the first cavity 411 in the middle of described preformed board 4, core 61 is provided with in the middle of described mouth template 6, described core 61 is provided with the second cavity 611, connect with described spreader 41 in the die cavity that described core 61 one end extends to described profiled sheeting 5 and described preformed board 4, and the second cavity 611 of described core 61 communicates with the first cavity 411 of described spreader 41, for the placement of Inner muscle.
Performance Detection is carried out to the section bar made in the present embodiment, meets national standard completely: the specific requirement in " GB/T 8814-2004 door, window not plasticized polyvinyl chloride (PVC-U) section bar ".
Claims (3)
1. a forming method for section bar, described section bar comprises outer wall and is arranged at the Inner muscle of described outer pars intramuralis, it is characterized in that, comprises the following steps:
1) Inner muscle is made by extrusion die, for subsequent use after Inner muscle cooling and shaping;
2) by described Inner muscle from feed inlet end insert co-extrusion die head cavity in after, in co-extrusion die head, add outer wall section bar base-material, Inner muscle and melting outer wall parison extruded jointly, cooling and shaping.
2. according to the forming method of section bar described in claim 1, it is characterized in that: the temperature in described co-extrusion die head is 180 ~ 200 DEG C, melt pressure is 200 ~ 400bar.
3. according to the forming method of section bar described in claim 1, it is characterized in that, described co-extrusion is got to know the machine neck (1) comprising and connecting successively, rebound (2), compressive plate (3), preformed board (4), profiled sheeting (5) and mouth template (6), sprue (11) is provided with in described machine neck (1), described rebound (2) is provided with the runner (21) communicated with described sprue (11), be provided with the spreader (41) in the sprue (11) being protruding to described machine neck (1) and described spreader (41) is provided with the first cavity (411) in the middle of described preformed board (4), core (61) is provided with in the middle of described mouth template (6), described core (61) is provided with the second cavity (611), connect with described spreader (41) in the die cavity that described core (61) one end extends to described profiled sheeting (5) and described preformed board (4), and second cavity (611) of described core (61) communicates with first cavity (411) of described spreader (41), for the placement of 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 true CN105014906A (en) | 2015-11-04 |
| CN105014906B CN105014906B (en) | 2017-08-25 |
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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 |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040032050A1 (en) * | 2002-08-13 | 2004-02-19 | 3M Innovative Properties Company | Die having multiple orifice slot |
| CN1547525A (en) * | 2001-08-27 | 2004-11-17 | Method for forming weather seals from an interchangeable insert die assembly | |
| 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 |
| JP2011147995A (en) * | 2009-12-25 | 2011-08-04 | Toyoda Gosei Co Ltd | Insert, method for producing the same, and method for producing long product provided with the same |
| CN102751689A (en) * | 2011-04-18 | 2012-10-24 | 美利肯公司 | Divided conduit and process for forming |
| 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
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547525A (en) * | 2001-08-27 | 2004-11-17 | Method for forming weather seals from an interchangeable insert die assembly | |
| US20040032050A1 (en) * | 2002-08-13 | 2004-02-19 | 3M Innovative Properties Company | Die having multiple orifice slot |
| JP2011147995A (en) * | 2009-12-25 | 2011-08-04 | Toyoda Gosei Co Ltd | Insert, method for producing the same, and method for producing long product provided with the same |
| 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 |
| CN102751689A (en) * | 2011-04-18 | 2012-10-24 | 美利肯公司 | Divided conduit and process for forming |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105014906B (en) | 2017-08-25 |
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