CN101306577A - Process for cooling and fixing continuous extrusion plastic products and intercooler unit - Google Patents
Process for cooling and fixing continuous extrusion plastic products and intercooler unit Download PDFInfo
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- CN101306577A CN101306577A CNA2007101083317A CN200710108331A CN101306577A CN 101306577 A CN101306577 A CN 101306577A CN A2007101083317 A CNA2007101083317 A CN A2007101083317A CN 200710108331 A CN200710108331 A CN 200710108331A CN 101306577 A CN101306577 A CN 101306577A
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Abstract
The invention discloses a method for cooling and setting continuously extruded plastic products, and an inter-cooling device. The inter-cooling device is arranged between a dry type stock mold and a wet type setting tank; the inter-cooling device is a sealed tank body; a plurality of cooling chambers (15) which are separated by setting blocks (16) and can lead in and lead out cooling water are arranged on the tank body along the proximate matter moving direction; the upper parts of the cooling chambers are communicated mutually and communicated with a negative pressure source outside the tank body; the widths of the cooling chambers are equivalent or steadily increased along the proximate matter moving direction; the width of a first cooling chamber which leads proximate matters in is less than or equals to 3mm. The widths of the cooling chambers are very small, so the plastic products cannot be deformed; the plastic products are soaked in the cooling water fully, the efficiency of cooling and setting is high, the pulling speed of the proximate matters is increased, and the total length of the stock mold is shortened.
Description
Technical field
The present invention relates to a kind of method and apparatus that continuous extrusion plastic products is carried out efficient cooling and shaping.
Background technology
Plastic material is by the extrusion die extrusion modling.Extrusion die commonly used at present mainly is made up of die head, dry type stock mould, wet vacuum water tank three parts.Raw material obtain the molten base of definite shape through die head behind the fusion plastification in extruder barrel, enter into the dry type stock mould, under the effect of vacuum adsorption force, parison fully contacts with stock mould, heat that parison carries and stock mould carry out heat exchange, are taken away by the cooling water in the stock mould again.Because the gap is bigger between the shaped block of the support section bar of arranging in the wet vacuum water tank, can not fully be cooled off in stock mould as fruit product, under the water tank vacuum action, goods can be because interior heat deforms its gap location between shaped block.Therefore, have only when 90% of parison outer wall thickness to reach vitrification point when following, just can be incorporated in the wet vacuum water tank, directly to its further cooling and typing, obtain the goods of required form and length at last by cutting by cooling water.Because the heat that carries of parison is taken away by cooling water after by the stock mould transmission, the heat of removing in the unit interval is limited, makes the speed of production of section bar suffer restraints.If improve the section bar hauling speed, certainly will will increase the length of dry type stock mould, and the length of stock mould can not prolong unrestrictedly.After the stock mould length overall surpasses 100cm, the increase of stock mould length is comparatively slow to the raising influence of hauling speed: be on the one hand because there is vacuum adsorption force in stock mould to goods, increase stock mould length is detained goods in stock mould time lengthening, cause the resistance of goods in distraction procedure to strengthen.Owing to the restriction of process equipment, every joint stock mould can not design oversize on the other hand.The stock mould segmentation can cause rigging error again, and segmentation causes cumulative errors to strengthen too much, influences the shape and the size of end article.And the processing cost height of stock mould, the stock mould part of lengthening is very big to the die cost influence.Therefore, produce the stock mould total length that is adopted at present and generally be no more than 135cm, normal hauling speed is at 2.5～3.5 meters/minute, and hauling speed generally is not higher than 4.0 meters/minute.
Summary of the invention
In order to solve the problem that above-mentioned continuous extrusion plastic products speed of production is difficult to improve, the invention provides a kind of method and intercooler unit to the continuous extrusion plastic products cooling and shaping, can improve the cooling forming efficient of parison, thereby under the situation that does not increase section bar tractive force, improve the hauling speed of section bar, improve the speed of production of section bar.
The inventive method is achieved in that one section intercooler unit is set between dry type stock mould and wet vacuum water tank; Molten base reaches vitrification point and imports in this intercooler unit when following being cooled to 1/4～1/3 of its outer wall thickness through the dry type stock mould.This intercooler unit is the casing of a sealing, and casing is provided with several cooling chambers that can feed and derive cooling water on the section bar moving direction, and each cooling chamber top communicates and communicates with casing negative pressure source outward; Each cooling chamber equates or increases progressively that at the width of section bar moving direction first cooling chamber width that section bar imports is not more than 3mm, and adjacent cooling chamber stand out is not more than 3mm.
When goods are that section bar is when passing through above-mentioned intercooler unit, goods integral body in each cooling chamber is immersed in the cooling water, the heat that carries by the cooling water absorbent article and with its derivation, each cooling chamber width is very little in the casing simultaneously, arrange closely that shaped block plays styling to goods, can not make product deformation.Because of goods integral body is immersed in the cooling water, the heat of taking away in the unit interval is than stock mould height, and therefore, the cooling of mould and typing efficient are significantly improved, and the hauling speed of section bar can improve.Can substitute a part of stock mould with this device, make the total length of stock mould to reduce.
The present invention is used for realizing that the intercooler unit of said method is the casing of a sealing, casing on the section bar moving direction, be provided with several by shaped block every the cooling chamber that feeds and derive cooling water that separates, shaped block is processed with the die cavity that is complementary with profile size on the goods lead, each cooling chamber top communicates and communicates with casing negative pressure source outward; Each cooling chamber equates or increases progressively that at the width of section bar moving direction first cooling chamber width that section bar imports is not more than 3mm.
First cooling chamber width that section bar imports is preferably 1.5-2.5mm, and the width of each cooling chamber increases progressively or several cooling chambers of being separated by increase progressively continuously at the section bar moving direction.If first cooling chamber width is wide, then the parison temperature that derived by stock mould of inevitable requirement is lower, cool off more fully, otherwise parison intensity is lower, and it is afterwards yielding to enter this device; But its width is also unsuitable too small, and during less than 1.5mm, flow of cooling water is not smooth, and cooling effect is undesirable.
Two side plates of casing are made up of two interior outer panels respectively, outer panel inboard, the left and right sides has the catch basin of using for discharge opeing, have the overfall that communicates with catch basin on the left and right sides interior plate of the cooling chamber both sides above the section bar, left and right sides outer panel is provided with the exhaust tube that communicates with catch basin; Left and right sides outer panel inside bottom has lead channel, has the inlet opening that communicates with lead channel on the left and right sides interior plate of cooling chamber two side bottoms, and left and right sides outer panel is provided with the water supply connector that communicates with lead channel.
Have the shaped block slot on the inwall of casing both sides, the width of slot makes shaped block move forward and backward at the section bar moving direction in slot greater than the width of shaped block.
The present invention has following beneficial effect:
1, intercooler unit is than dry type stock mould cooling effectiveness height.The dry type stock mould is to utilize cooling medium by intake pressure flowing in die steel to the cooling of goods, takes away goods and conducts heat to die steel.The type of cooling of this device is that the direct contact zones of goods and cooling water are walked heat.Because the specific heat of water appearance is 9 times of steel, the heat that absorbs when the rising uniform temp is bigger than steel, will get well so cooling water directly contacts the goods cooling effect.On the other hand, water can fully contact its cooling effect of performance with goods.And quicken it and flow by intake pressure, water convection current and external exhaust tube from bottom to top, improved cooling effect by a larger margin.Therefore increase this device in dry type stock mould back, can keep under the constant situation of hauling speed the length overall of stock mould being shortened greatly, as being the goods of 0.25cm for wall thickness, be under 6 meters/minute in hauling speed, dry type stock mould length overall is reduced in the 60cm by 135cm; For wall thickness is the goods of 0.25cm, when dry type stock mould length is 100cm, increases this device rear haulage speed and can reach 7 meters/minute.
2, can be located at preceding half section cooling chamber width be in 1～3mm scope to intercooler unit, is equivalent to the vacuum air drain in the dry type stock mould, and goods moderate finite deformation can not take place by this minimum intersegmental crack the time.All the time be in during this device busy under the vacuum negative pressure condition,, control shape of product by the negative pressure that vacuum meter and vacuum air valve are regulated this device.By reliable seal approach in installing, can keep stable negative pressure value down in working order.
3, the shaped block in the intercooler unit can adopt monoblock type, and die joint is not set.Compare with the dry type stock mould, reduced the assembling deviation that causes because of somatotype.Shaped block adopts floating type location in device, shaped block moves on a small quantity horizontal and vertical equal can the work.The dry type stock mould can not guarantee die cavity at the linearity of extruding on the direction because of there being assembling deviation, and resistance strengthens when making traction, easily causes goods flexural deformation.In addition, shaped block can adopt floating type locate mode, has fully guaranteed the linearity of die cavity in the distraction procedure.
4, cooling water is injected by the gap location between the shaped block, divides some inlet openings to spurt in the device, guarantees to have imported cooling water flow stably, makes the cooling water of input can not produce big impact to the section bar surface.
5, supply water separately in the left and right sides, thereby the flow of inlet water of the left and right sides is adjustable respectively, can adjust the cooling effectiveness of goods zones of different by the size of regulating the both sides inflow for asymmetric goods, thereby effectively overcome the buckling phenomenon of goods in the distraction procedure.
6, intercooler unit is with to compare manufacturing cost with the typing of the dry type of length lower, easy to maintenance.This device materials cost and manufacturing expense are on the low side, are equivalent to about 60% of the dry type stock mould of length.This installs the raising of efficient aspect cooling and shaping, has shortened the total length of typing section again greatly.This device adopts the blade inserting shaped block, easy disassembling, and the mould regular maintenance is convenient.
Description of drawings
Fig. 1 is a working state schematic representation of the present invention.
Fig. 2 is an intercooler unit structural representation of the present invention.
Fig. 3 is along A-A line profile among Fig. 2.
Fig. 4 is along B-B line cutaway view among Fig. 2.
Fig. 5 is along C-C line cutaway view among Fig. 2.
Among the above-mentioned figure: 1, stock mould; 2, intercooler unit, 3, the wet vacuum water tank, 4, section bar, 5, import plate, 6, top board, 7, the vacuum air valve, 8, vacuum adapter, 9, vacuum meter, 10, slot, 11, overfall, 12, the sealing shaped block, 13, exit plate, 14, aspirating hole, 15, cooling chamber, 16, shaped block, 17, base plate, 18, lead channel, 19, aspirating hole, 20, Right Inboard plate, 21, right outer panel, 22, left interior plate, 23, left-external side plate, 24, exhaust tube, 25, catch basin, 26, water supply connector, 27, the delivery port of band control valve, 28, inlet opening, 29, air drain.
The specific embodiment
As shown in Figure 1, intercooler unit 2 of the present invention is connected between dry type stock mould 1 and the wet vacuum water tank 3.
Shown in Fig. 2-5, intercooler unit is by base plate 17, top board 6, two side plates and the import plate 5 that is located at section bar 4 entrance ends, exit plate 13 is formed the casing of a coating, two side plates of casing are respectively by two interior outer panels 20,21,22,23 form, left and right sides interior plate 20,22 inboards have some shaped block slots 10, shaped block 16 is installed in the casing by slot 10, gap between the adjacent shaped block is a cooling chamber 15, the shaped block that casing is imported and exported two ends is sealing shaped block 12, import plate 5 with cabinets cavity and two ends, exit plate 13 is separated, the sealing shaped block is provided with air drain 29, and the import plate 5 at two ends and exit plate 13 are provided with the aspirating hole 19 and 14 that communicates with air drain.Gapped between two sealings each shaped block 16 between the shaped block 12 and the top board 6, make to communicate above each cooling chamber that the width of slot 10 is greater than the width of shaped block 16, make shaped block in slot, can fluctuate and move forward and backward at the section bar moving direction; Top board 6 be provided with casing in the vacuum adapter 8 that communicates, vacuum adapter communicates with negative pressure source; Outer panel 21,23 inboards in the left and right sides have the catch basin of using for discharge opeing 25 along the section bar moving direction, have the overfall 11 that communicates with catch basin 25 on the left and right sides interior plate 20,22 of 15 both sides of the cooling chamber above the section bar, left and right sides outer panel 21,23 is provided with the exhaust tube 24 that communicates with catch basin 25. Outer panel 21,23 inside bottom in the left and right sides have lead channel 18, have the inlet opening 28 that communicates with lead channel 18 on the left and right sides interior plate 20,22 of 15 liang of side bottoms of cooling chamber, and left and right sides outer panel 21,23 is provided with the water supply connector 26 that communicates with lead channel 18.Have on the base plate of casing in the delivery port 27, on the delivery port 27 flow control valve is housed.
Each cooling chamber equates or several cooling chambers increase progressively at the width of section bar moving direction.In this example, preceding half section each cooling chamber width is identical in the casing, and its width is 1～3mm, is equivalent to the vacuum air drain in the dry type stock mould; Second half section cooling chamber width is identical, and its width is 4～6mm, has strengthened the heat exchange of cooling fluid and goods.On the horizontal and lengthwise position that shaped block is placed, all leave the free gap, effectively eliminated the linearity deviation of bringing because of rigging error.Device is regulated the vacuum and the liquid level of casing by the delivery port 27 that is located at the band control valve under vacuum meter 9, vacuum air valve 7 and the base plate on the top board 6.Cooling water is entered by adjustable water supply connector 26 in the lead channel 18 of left and right sides outer panel, enters in the cooling chamber 15 between the shaped block 16 by inlet opening 28, from bottom to top goods is cooled off.Shaped block 16 has designed the die cavity similar to profile shapes on the lead of section bar 4, the descending notch cuttype that is of the size of die cavity is arranged.When 24 work of vacuum adapter 8 and exhaust tube, device remains under the constant relatively vacuum negative pressure condition, and this negative pressure is impelled the outer wall of section bar 4 and the die cavity applying of shaped block 16, and the cooling by cooling fluid, reaches the effect that goods are finalized the design.
Operation principle to the section bar cooling is as follows: cooling water is entered in the lead channel 18 of left and right sides outer panel by the adjustable water supply connector 26 of device both sides, enter in the cooling chamber 15 by inlet opening 28, carry out exchange heat with goods, then, cooling water is entered in the catch basin 25 by the overfall 11 of section bar top, discharges under the swabbing action of exhaust tube 24.Take away by aspirating hole by vacuum extractor by the cooling water that the die cavity that seals shaped block 12 penetrates in the air drain 29, can guarantee sealing in the casing.
Increasing this device in 60cm dry type stock mould back, is the goods of 0.25cm for wall thickness, and hauling speed can reach 6 meters/minute, and output hourly is above 400 kilograms.
Claims (5)
1, to the method for continuous extrusion plastic products cooling and shaping, it is characterized in that: between dry type stock mould [1] and wet type typing water tank [3], one section intercooler unit [2] is set; This intercooler unit is the casing of a sealing, and casing is provided with several cooling chambers [15] that can feed and derive cooling water on the section bar moving direction, and each cooling chamber top communicates and communicates with casing negative pressure source outward; Each cooling chamber equates or increases progressively that at the width of section bar moving direction first cooling chamber width that section bar imports is not more than 3mm; Molten base reaches vitrification point and imports in this intercooler unit when following being cooled to 1/4～1/3 of its outer wall thickness through the dry type stock mould.
2, a kind of intercooler unit of realizing the described method of claim 1, it is characterized in that: this device is the casing of a sealing, casing on the section bar moving direction, be provided with several by shaped block [16] every the cooling chamber that feeds and derive cooling water [15] that separates, shaped block is processed with the die cavity that is complementary with profile size on the section bar moving direction, each cooling chamber top communicates and communicates with casing negative pressure source outward; Each cooling chamber equates or increases progressively that at the width of section bar moving direction first cooling chamber width that section bar imports is not more than 3mm.
3, intercooler unit according to claim 2 is characterized in that: first cooling chamber width that section bar imports is preferably 1.5-2.5mm, and the width of each cooling chamber increases progressively or several cooling chambers of being separated by increase progressively continuously at the section bar moving direction.
4, according to claim 2 or 3 described intercooler units, it is characterized in that: two side plates of casing are made up of two interior outer panels [20,21 and 22,23] respectively, left and right sides outer panel [21,23] inboard has the catch basin of using for discharge opeing [25], have the overfall [11] that communicates with catch basin [25] on the left and right sides interior plate [20,22] of the cooling chamber above the section bar [15] both sides, left and right sides outer panel [21,23] is provided with the exhaust tube [24] that communicates with catch basin [25]; Left and right sides outer panel [21,23] inside bottom has lead channel [18], have the inlet opening [28] that communicates with lead channel [18] on the left and right sides interior plate [20,22] of cooling chamber [15] two side bottoms, left and right sides outer panel [21,23] is provided with the water supply connector [26] that communicates with lead channel [18].
5, intercooler unit according to claim 4, it is characterized in that: have shaped block slot [10] on the left and right sides interior plate of casing both sides [20, the 22] inwall, the width of slot [10] makes shaped block can move forward and backward in slot on the section bar moving direction greater than the width of shaped block [16].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710108331 CN101306577B (en) | 2007-05-18 | 2007-05-18 | Process for cooling and fixing continuous extrusion plastic products and intercooler unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710108331 CN101306577B (en) | 2007-05-18 | 2007-05-18 | Process for cooling and fixing continuous extrusion plastic products and intercooler unit |
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| Publication Number | Publication Date |
|---|---|
| CN101306577A true CN101306577A (en) | 2008-11-19 |
| CN101306577B CN101306577B (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710108331 Expired - Fee Related CN101306577B (en) | 2007-05-18 | 2007-05-18 | Process for cooling and fixing continuous extrusion plastic products and intercooler unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767439A (en) * | 2010-03-05 | 2010-07-07 | 连云港杰瑞模具技术有限公司 | Water immersion full-sealing negative pressure shaping system of extrusion mold |
| CN101947850A (en) * | 2010-09-19 | 2011-01-19 | 铜陵格瑞特挤出技术有限公司 | Intermediate cooling water tank capable of being used for high-speed extrusion mold |
| CN102328424A (en) * | 2011-10-13 | 2012-01-25 | 铜陵中发三佳科技股份有限公司 | Plastic profile extrusion mold water tank capable of locking molding block rapidly |
| CN103302836A (en) * | 2013-05-17 | 2013-09-18 | 张李忠 | Method for producing plastic-steel section by using low-cold-stress coextrusion die |
| CN108357075A (en) * | 2018-04-27 | 2018-08-03 | 张家港卡福新材料有限公司 | The water-cooling system of Wood-plastic floor extrusion moulding |
| CN109878058A (en) * | 2019-04-16 | 2019-06-14 | 洛阳市建园模具制造有限公司 | A kind of modular panel structure shaping equipment for vacuum forming |
-
2007
- 2007-05-18 CN CN 200710108331 patent/CN101306577B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767439A (en) * | 2010-03-05 | 2010-07-07 | 连云港杰瑞模具技术有限公司 | Water immersion full-sealing negative pressure shaping system of extrusion mold |
| CN101947850A (en) * | 2010-09-19 | 2011-01-19 | 铜陵格瑞特挤出技术有限公司 | Intermediate cooling water tank capable of being used for high-speed extrusion mold |
| CN101947850B (en) * | 2010-09-19 | 2012-10-03 | 铜陵格瑞特挤出技术有限公司 | Intermediate cooling water tank capable of being used for high-speed extrusion mold |
| CN102328424A (en) * | 2011-10-13 | 2012-01-25 | 铜陵中发三佳科技股份有限公司 | Plastic profile extrusion mold water tank capable of locking molding block rapidly |
| CN103302836A (en) * | 2013-05-17 | 2013-09-18 | 张李忠 | Method for producing plastic-steel section by using low-cold-stress coextrusion die |
| CN108357075A (en) * | 2018-04-27 | 2018-08-03 | 张家港卡福新材料有限公司 | The water-cooling system of Wood-plastic floor extrusion moulding |
| CN109878058A (en) * | 2019-04-16 | 2019-06-14 | 洛阳市建园模具制造有限公司 | A kind of modular panel structure shaping equipment for vacuum forming |
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| Publication number | Publication date |
|---|---|
| CN101306577B (en) | 2011-04-13 |
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Granted publication date: 20110413 Termination date: 20170518 |