CN100544938C - The complete method and apparatus of liquid silica gel extruding, forming and vulcanization - Google Patents
The complete method and apparatus of liquid silica gel extruding, forming and vulcanization Download PDFInfo
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- CN100544938C CN100544938C CNB2006101490658A CN200610149065A CN100544938C CN 100544938 C CN100544938 C CN 100544938C CN B2006101490658 A CNB2006101490658 A CN B2006101490658A CN 200610149065 A CN200610149065 A CN 200610149065A CN 100544938 C CN100544938 C CN 100544938C
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Abstract
The complete method and apparatus of a kind of liquid silica gel extruding, forming and vulcanization, metering and mixing arrangement (1 are arranged, 9), the interlocked injection machine, the molding sulfuration device, traction wrap-up (15), automaton (16) five parts, material cylinder (7) in the interlocked injection machine, hydraulic system (6) and hydraulic cylinder (5) thereof, range arm (4), valve is formed two cover groundwork unit, capacity is continuous greatly, steadily, accurate feeding, mould (19) and sulfuration tube (12) are installed on the head of molding sulfuration device (10), goods the interior medium (17) of liquid and outside sulfuration in the medium (13), directly and correctly grasp curing temperature, energy-conservation, can over cure.Liquid silica gel gravity in liquid medium is subjected to the payment of buoyancy, formed product is good, can not be created in yielding in the air dielectric, break even problem that can not moulding, and can be made into the product complex-shaped, that precision is high, more be applicable to medical treatment, field of food, insulation, good, energy-conservation, the work efficiency advantages of higher of thermal insulation.
Description
Technical field
The present invention relates to a kind of with the liquid silica gel be raw material, capacity is injected method and apparatus feed, produce rubber with the extruding, forming and vulcanization mode accurately, steadily, continuously greatly.
Background technology
The rubber production of continuing to use for many years is to be raw material with the solid rubber, and through the heavy and manufacturing procedure of power consumption such as refining glue, preformed, raw material impurity is many relatively, is unsuitable for doing medical health care products and packaging for foodstuff.Middle and later periods in last century, the injection molding research and the trial production of liquid silica gel have just been begun, be difficult to make the problem complex-shaped and product that required precision is high to overcome solid gum, after finding the advantage that liquid silica gel injection moulding cost is low, energy consumption is little, work efficiency is high, the energy automation is supporting, wind is rotten so far popular.
In a word, the production of the liquid silastic goods of the world today, employing be injection molding, vulcanize in mould, existing various liquid silica gel injector comprise follow-on thermosetting plastics injection (mo(u)lding) machine, because of all can not be continuously, steady feeding, all be not suitable for extrusion molding.And the solid silicone extrusion molding, baking in the tunnel type drying tunnel, the heat of air is conducted, infra-red radiation efficient is low, can not directly correctly control the product curing temperature, as easy as rolling off a log generation over cure, thereby consume energy, increase percent defective.
The present invention splits path in addition, with liquid silica gel is raw material, produce rubber system device with the extrusion molding mode, particularly produce rectangular sebific duct, film, adhesive tape etc., then, must be able to satisfy the requirement of accurate measurement, steady, big capacity continuous feeding as injector, as the molding sulfuration device, must correctly and directly control the product curing temperature, special core be liquid silica gel behind extrusion mould-outlet, how to overcome gravity effect and do not make its distortion, break even a difficult problem that can't moulding.As seen, must there be a whole set of method and relevant device to capture this brand-new problem.
Summary of the invention
The objective of the invention is present situation at prior art, designing a kind of is raw material with liquid silica gel, the big capacity of employing energy is continuous, steady, the interlocked injection equipment of accurate feeding, with the complete method and apparatus of liquid silica gel extruding, forming and vulcanization that vulcanizes in extrusion molding mode, the liquid medium.
The present invention can realize by following measure: this liquid silica gel extruding, forming and vulcanization complete set of equipments, include metering and mixing arrangement, injector, the molding sulfuration device, the traction wrap-up, automaton five parts, first three part has conveying pipeline to link to each other, the measuring pump of selecting for use is the volume type measuring pump, the blender of selecting for use is a static mixer, static mixer is installed in measuring pump and A, the output of B component silica gel container or other material container, said injector is the interlocked injection machine, by the material cylinder, hydraulic system and hydraulic cylinder thereof, range arm, the two cover groundwork unit that valve is formed are formed, the valve of the material cylinder in this two covers groundwork unit has inlet valve F1, F2 and bleeder valve F3, F4, be installed in advancing of material cylinder respectively, discharge end, the range arm of the indicator piston throw of lever is installed in by the piston rod; Mould is installed on the head of molding sulfuration device, contains the outer medium tube that liquid medium is used, conveying pipeline connects head; Rubber connects the traction wrap-up, and each workpiece connects automaton by lead.
Metering and mixed processes in the complete method of this liquid silica gel extruding, forming and vulcanization are compared with the liquid silica gel injection moulding method, and the one, A, B component liquid silica gel are mixed in static mixer earlier, bin stock is in the material cylinder again; The secondth, material cylinder and automatic control system, range arm, inlet valve, bleeder valve are as a groundwork unit in the interlocked injection machine, work in coordination and carry out the work, be example now with two groundwork unit (abbreviation twin-tub), by big capacity and two kinds of situations of low capacity injection, division bin stock and injection two steps:
(1) injection volume≤list is only expected the low capacity injection of cylinder heap(ed) capacity:
(1) bin stock: start measuring pump, valve F1 leaves, and F2, F3, F4 close, and A, B component compound mix laggard left side material cylinder through static mixer, and when range arm showed that the storing amount reaches setting value, measuring pump quit work, and valve F1 closes, and F2, F3, F4 also close;
(2) injection: primer fluid pressing system and hydraulic cylinder thereof, open valve F3, close F1, F2, F4, the left side hydraulic cylinder promotes piston the compound in the cylinder material of left side is expelled to conveying pipeline in mold cavity;
(2) injection volume＞list is only expected the big volume injection of cylinder heap(ed) capacity:
(1) storing: start measuring pump, valve F1 leaves, and F2, F3, F4 close, left side material cylinder bin stock, after storage is full, switch to right side material cylinder and continue bin stock, then valve F1 closes, and F2 opens, F3, F4 continue to close, raw material is just stored in the right side material cylinder, and when total injection volume＞two material cylinder bin stock amounts, two material cylinders all need be store to maximum;
(2) injection: primer fluid pressing system and hydraulic cylinder thereof, valve F3 leaves, and F1, F2, F4 close, left side material cylinder start injection, F3 closes when extremely having injected, and F1, F4 open, F2 closes, right side material cylinder start injection, meanwhile, measuring pump starts once more, and left side material cylinder begins bin stock for the second time, bin stock speed＞injection speed, wheel turns over alternately, after the injection volume that so is circulated to total setting has been injected, and valve F1, F2, F3, F4 contract fully, hydraulic system, measuring pump quit work, and whole interlocked injection is finished;
When the injection volume of setting is very big, left and right side material cylinder, just long-term wheel turns over alternately bin stock and injection.
The 3rd is extrusion molding and vulcanization process, comprises following operation:
Produce the product that does not have interior tube chamber:
(1) outer medium selecting materials and preparing;
(2) outer medium is poured in the sulfuration tube and heating;
(3) when outer medium is heated to design temperature by heater, open the interlocked injection machine, injection is fed to mould;
(4) enter outer medium behind the raw material extrusion mould-outlet and begin sulfuration, output prefabrication;
(5) prefabrication is entered the traction rolling, regulate and stable charging and hauling speed, control well after the goods appearance and size, can produce the product that does not have interior tube chamber;
Production has the product of interior tube chamber:
(1) interior medium and outer medium selecting materials and preparing burden;
(2) outer medium is poured in the sulfuration tube and heating;
(3) when outer medium is heated to design temperature by heater, open the interlocked injection machine, injection is fed to mould;
(4) enter outer medium behind the raw material extrusion mould-outlet and begin sulfuration, the output prefabrication enters the traction rolling;
(5) the interior medium that interior medium is filled in the cylinder charges into the mold core pipe to the lower end in inner tube product chamber through connecting leg, reaches requirement to inner tube product chamber diameter and ends;
(6) regulate charging and hauling speed,, meet the requirements to wall thickness, stablize charging and hauling speed, produce the product that interior tube chamber is arranged continuously, the traction rolling, check and put in storage with control product wall thickness.
The present invention can also come perfect by following measure: the interior medium connecting leg of the mold core Guan Jing on the said head fills cylinder with interior medium and links to each other; Said inside and outside medium is at least a in liquid alcohols, ester class, oils, salt, water, the carbohydrate, and interior medium also comprises gas; The proportion and the liquid-state silicon gel of the liquid inside and outside medium of selecting for use are close, and boiling point is higher than the curing temperature of liquid silica gel.
Description of drawings
Accompanying drawing is a complete set of equipments two-cylinder type structural representation of the present invention.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and with reference to accompanying drawing: the extrusion molding of solid silicone nowadays, in baking oven, carry out sulfidization molding with air as medium, temperature sensor is contact product directly, can only contact oven body, product contacts with hot-air, and the thermal efficiency is low, the temperature control error is big, causes the over cure of product easily and consumes energy and increase waste product.If use said method, when then liquid silica gel is made raw material and made the product of sebific duct and so on, behind the liquid silica gel extrusion mould-outlet, in air dielectric,, very easily break, be out of shape even can not moulding because of being subjected to gravity effect.
The present invention adopts liquid to make heat transfer medium, make simultaneously in goods gravity and buoyancy in the liquid medium environment in a basic balance and vulcanize, overcome gravity effect on the one hand, make product indeformable, on the other hand when improving heat conduction efficiency, also can directly and accurately control the product curing temperature by liquid medium, thus energy-conservation, efficient, the raising percentage of A-class goods.Therefore, this molding sulfuration device needs to install the sulfuration tube 12 of outer medium 13 usefulness of holding liquid on head 10, and during the sebific duct product 14 of tube chamber, the core pipe 21 of mould 19 also is connected with interior medium connecting leg 20 and interior medium fills cylinder 18 in production has.Generally speaking, inside and outside medium 13 and 17 can be with a kind of liquid, requires closely with the proportion of liquid silica gel, and boiling point is higher than the liquid of the curing temperature of silica gel, and also considerations in the lump of condition such as nontoxic, low-cost, easily acquisition, easy cleaning are suitable as glycerine etc.Though it is that liquid silica gel is a raw material that the application indicates, other liquid rubber in fact, method and apparatus can be general, and just liquid medium is still needed and is elected in addition.If the very tiny product of tube chamber in producing, then interior medium is not necessarily used liquid, can consider to use air.
Another key of the present invention is to design a kind of interlocked injection machine and supporting control program, and continuous, accurate, the smooth injection feed of capacity only in this way could really successfully be realized the extruding, forming and vulcanization production of liquid silica gel greatly.
In the interlocked injection machine, tentatively a material cylinder 7, one cover hydraulic system 6 and hydraulic cylinder 5 thereof, a range arm 4, corresponding part conveying pipeline 8 and valve are called a cover groundwork unit (hereinafter to be referred as single cylinder), the present invention at least two cover groundwork unit are (hereinafter to be referred as twin-tub, the rest may be inferred by analogy), now be that example illustrates with the twin-tub, twin-tub promptly must be stored the A that is mixed by static mixer in two material cylinders 7, B liquid silica gel compound, at automaton, hydraulic system and hydraulic cylinder thereof, under the effect of range arm charging/discharging valve, two material cylinders wheel turns over alternate cycles bin stock and injection, injected until setting value, capacity is continuous greatly, accurately, the smooth injection feed meets the feed requirement of liquid-state silicon gel extrusion molding.The material cylinder also can be three cylinders, and A, B material wheel in three cylinders turns over alternate cycles bin stock and injection.Four cylinders that can also match in twos, two material cylinders are adorned A, B compound, take turns and turn over alternately bin stock and injection, two cylinders are adorned pigment paste in addition, take turns to turn over to replace and store and injection, and AB compound and pigment paste are sneaked into back injection mould, produce colored sebific duct with another static mixer.Produce some colours, maybe need add additive, need to adopt multi-cylinder.If, when the multiple liquid glue proportioning of need is mixed and property-modifying additive is arranged, can be a plurality of material cylinders and the hydraulic system supporting etc. with it as a groundwork unit, carry out the combination of multi-cylinder and multi-cylinder.This method and accompanying drawing all are that example illustrates with the two-cylinder type, and the common scientific and technical personnel that go together can pass through the two-cylinder type technical information, know three cylinders, four cylinders, the more method of operating and the device structure of multi-cylinder by inference with drawing inferences about other cases from one instance, carefully do not state for this reason.Traction wrap-up 15 and conventional method, structure are identical.The key of automaton 16 is program composition, the automaticity difference, and programming is different, groundwork element number difference, programming is also different, and this belongs to the copyright protection of computer program, no longer narration.
But the sulfuration tube 12 profile tubulars in the molding sulfuration device, but flute profile, dark dish type etc.; Heater 11 has multiple, can be heating collar, electrical bar or other; Raw material can comprise that also low viscosity is the various rubber of viscosity below 3000Pa.S (r=0.9s-1), all is suitable for doing raw material of the present invention except that liquid silica gel.Because of proportion, the curing temperature difference of raw material, liquid medium will be selected else, and programming will be adjusted to some extent because of the process conditions difference.
Claims (5)
1, a kind of liquid silica gel extruding, forming and vulcanization complete set of equipments, include metering and mixing arrangement, injector, the molding sulfuration device, traction wrap-up (15), automaton (16) five parts, first three part has conveying pipeline (8) to link to each other, it is characterized in that the measuring pump of selecting for use is volume type measuring pump (1), the blender of selecting for use is static mixer (9), static mixer (9) is installed in measuring pump (1) and A, B component silica gel container (2,3) or the output of other material container, said injector is the interlocked injection machine, by material cylinder (7), hydraulic system (6) and hydraulic cylinder (5) thereof, range arm (4), valve is that two cover groundwork unit of a cover groundwork unit are formed altogether, material cylinder (7) in the two cover groundwork unit has inlet valve F1, F2 and bleeder valve F3, F4, be installed in advancing of material cylinder (7) respectively, discharge end, the range arm of the indicator piston throw of lever (4) is installed in by the piston rod, mould (19) is installed on the head of molding sulfuration device (10), contain the outer medium tube (12) of liquid medium, conveying pipeline (8) connects head (10), rubber (14) connects traction wrap-up (15), and each workpiece connects automaton (16) by lead.
2, liquid silica gel extruding, forming and vulcanization complete set of equipments as claimed in claim 1 is characterized in that mold core pipe (21) on the said head (10) fills cylinder (18) through interior medium connecting leg (20) and interior medium and links to each other.
3, the complete method of a kind of liquid silica gel extruding, forming and vulcanization is characterized in that metering compares with the liquid silica gel injection moulding method with mixed method, at first A, B component liquid silica gel is mixed in static mixer (9), and bin stock is in material cylinder (7) again; The secondth, expect in the interlocked injection machine of saying that cylinder (7) and automatic control system (16), range arm (4), inlet valve, bleeder valve are worked in coordination and form a groundwork unit and carry out the work, specifically be divided into bin stock and injection two steps:
(1) injection volume≤list is only expected the low capacity injection of cylinder heap(ed) capacity:
(1) bin stock: start measuring pump (1), valve F1 leaves, and F2, F3, F4 close, A, B component compound mix laggard left side material cylinder (7) through static mixer (9), and when range arm (4) showed that the storing amount reaches setting value, measuring pump (1) quit work, valve F1 closes, and F2, F3, F4 also close;
(2) injection: primer fluid pressing system (6) and hydraulic cylinder (5) thereof, open valve F3, close F1, F2, F4, left side hydraulic cylinder (5) promotes piston the compound in the left side cylinder material (7) is expelled to conveying pipeline (8) in mould (19) die cavity;
(2) injection volume＞list is only expected the big volume injection of cylinder heap(ed) capacity:
(1) storing: start measuring pump (1), valve F1 leaves, and F2, F3, F4 close, left side material cylinder bin stock, after storage is full, switch to right side material cylinder and continue bin stock, then valve F1 closes, and F2 opens, F3, F4 continue to close, raw material is just stored in the right side material cylinder, and when total injection volume＞two material cylinder bin stock amounts, two material cylinders all need be store to maximum;
(2) injection: primer fluid pressing system (6) and hydraulic cylinder (5) thereof, valve F3 leaves, and F1, F2, F4 close, left side section cylinder start injection, F3 closes when extremely having injected, and F1, F4 open, F2 closes, right side material cylinder start injection, meanwhile, measuring pump starts once more, and left side material cylinder begins bin stock for the second time, bin stock speed＞injection speed, wheel turns over alternately, after the injection volume that so is circulated to total setting has been injected, and valve F1, F2, F3, F4 contract fully, hydraulic system, measuring pump quit work, and whole interlocked injection is finished;
When the injection volume of setting is very big, left and right side material cylinder, just long-term wheel turns over alternately bin stock and injection.
The 3rd is extrusion molding and vulcanization process, comprises following operation:
Produce the product that does not have interior tube chamber:
(1) outer medium (13) selecting materials and preparing;
(2) outer medium is poured in the sulfuration tube (12) and heating;
(3) when being heated to design temperature, open the interlocked injection machine by heater (11) when outer medium (13), injection is fed to mould (19);
(4) enter outer medium behind the raw material extrusion mould-outlet and begin sulfuration, output prefabrication;
(5) prefabrication is entered traction rolling (15), regulate and stable charging and hauling speed, control well after the goods appearance and size, can produce the product that does not have interior tube chamber;
Production has the product of interior tube chamber:
(1) interior medium (17) and outer medium (13) selecting materials and preparing burden;
(2) outer medium is poured in the sulfuration tube (12) and heating;
(3) when being heated to design temperature, open the interlocked injection machine by heater (11) when outer medium (13), injection is fed to mould (19);
(4) enter outer medium behind the raw material extrusion mould-outlet and begin sulfuration, the output prefabrication enters traction rolling (15) again;
(5) the interior medium (17) that interior medium is filled in the cylinder (18) charges into mold core pipe (21) to the lower end in inner tube product chamber through connecting leg, reaches requirement to inner tube product chamber diameter and ends;
(6) regulate charging and hauling speed, cut the product wall thickness, meet the requirements to wall thickness, stablize charging and hauling speed, produce the product (14) that interior tube chamber is arranged continuously, the traction rolling, check and put in storage with control.
4, the complete method of liquid silica gel extruding, forming and vulcanization as claimed in claim 3 is characterized in that said inside and outside medium is at least a in liquid alcohols, ester class, oils, salt, water, the carbohydrate, and interior medium also comprises gas.
5, as claim 3 or the complete method of 4 described liquid silica gel extruding, forming and vulcanizations, it is characterized in that the proportion and the liquid-state silicon gel of the liquid inside and outside medium selected for use is close, boiling point is higher than liquid silica gel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101490658A CN100544938C (en) | 2006-11-25 | 2006-11-25 | The complete method and apparatus of liquid silica gel extruding, forming and vulcanization |
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| CNB2006101490658A CN100544938C (en) | 2006-11-25 | 2006-11-25 | The complete method and apparatus of liquid silica gel extruding, forming and vulcanization |
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| CN1947987A CN1947987A (en) | 2007-04-18 |
| CN100544938C true CN100544938C (en) | 2009-09-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715828A (en) * | 2012-06-26 | 2012-10-10 | 中山市雄兵橡胶有限公司 | Method for producing seal ring of pressure cooker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049836B (en) * | 2010-10-15 | 2013-07-31 | 董富有 | Two-component liquid silicone injection-molding complete equipment |
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| CN1470556A (en) * | 2002-06-27 | 2004-01-28 | �Ϻ���ͨ��ѧ | Method for continuous preparation of two-component addition crosslinked silicone composition |
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- 2006-11-25 CN CNB2006101490658A patent/CN100544938C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470556A (en) * | 2002-06-27 | 2004-01-28 | �Ϻ���ͨ��ѧ | Method for continuous preparation of two-component addition crosslinked silicone composition |
Non-Patent Citations (2)
| Title |
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| 液体硅橡胶的注射成型. 张惠敏.特种橡胶制品，第23卷第4期. 2002 |
| 液体硅橡胶的注射成型. 张惠敏.特种橡胶制品，第23卷第4期. 2002 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715828A (en) * | 2012-06-26 | 2012-10-10 | 中山市雄兵橡胶有限公司 | Method for producing seal ring of pressure cooker |
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| CN1947987A (en) | 2007-04-18 |
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Assignee: Ling'an silicon Energy New Material Co Ltd Assignor: She Xiaofeng Contract record no.: 2010330001444 Denomination of invention: Method and equipment for extruding, forming and vulcanization of liquid silica gel Granted publication date: 20090930 License type: Exclusive License Open date: 20070418 Record date: 20100723 |
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Addressee: She Xiaofeng Document name: Notification that Application Deemed not to be Proposed |
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Owner name: HANGZHOU XINENG NEW MATERIAL CO., LTD. Free format text: FORMER OWNER: SHE XIAOFENG Effective date: 20131210 |
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Effective date of registration: 20131210 Address after: 311300 new village in Zhejiang province Ling'an Jincheng Street Patentee after: Hangzhou silicon Energy New Material Co Ltd Address before: The two district 311300 in Zhejiang province Ling'an City Jincheng Street room 6-101 room Patentee before: She Xiaofeng |