CN101287590A - Method and apparatus for molding elastic tire in vacuum - Google Patents
Method and apparatus for molding elastic tire in vacuum Download PDFInfo
- Publication number
- CN101287590A CN101287590A CNA2005800125449A CN200580012544A CN101287590A CN 101287590 A CN101287590 A CN 101287590A CN A2005800125449 A CNA2005800125449 A CN A2005800125449A CN 200580012544 A CN200580012544 A CN 200580012544A CN 101287590 A CN101287590 A CN 101287590A
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- mold
- mould
- jar
- core
- vacuum
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000000465 moulding Methods 0.000 title description 2
- 239000011324 bead Substances 0.000 claims abstract description 70
- 239000013536 elastomeric material Substances 0.000 claims abstract description 50
- 238000007666 vacuum forming Methods 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000011049 filling Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 3
- 238000005259 measurement Methods 0.000 claims 1
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- 239000003570 air Substances 0.000 description 47
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- 238000005266 casting Methods 0.000 description 8
- 241000239290 Araneae Species 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 229920000271 Kevlar® Polymers 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000004761 kevlar Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
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- 238000005429 filling process Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
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- 238000000354 decomposition reaction Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
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- 150000002513 isocyanates Chemical class 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
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- 125000006850 spacer group Chemical group 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0661—Rigid cores therefor, e.g. annular or substantially toroidal cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
A vacuum forming apparatus and process for its use in forming a transport tire from an elastomeric material that includes a mold having a cavity or annular area wherein a transport tire core of plies, belt and beads is laid-up on a mandrel located within the mold. The mold receives a cover fitted in sealing engagement over the mold top and a cylindrical canister is fitted through the center of which cover and the mold center that is open at a top end to receive a pour of an elastomeric material mixture and includes a needle valve in its lower end that exhausts into one end of the mold annular area.; The cylindrical canister includes a port for connection to a deep vacuum source and the cover includes a port that is for connection to a low level vacuum source, with the deep vacuum to remove air from the elastomeric material mixture as it is poured into the canister, and with, after filling, the port is open to atmosphere and the needle valve is opened to exhaust the mixture into the mold annular chamber wherethrough it is pulled by the low level vacuum through the cover port, filling the mold annular cavity and thoroughly impregnating the core maintained therein.
Description
Technical field
The present invention relates to be used for the method and apparatus that vacuum forming comprises the elastomeric transport tire of the core of being with bundle, casing ply and tyre bead.
Background technology
The present invention relates to a kind of novelty and unique vacuum forming equipment, use in by the automated process of elastomeric material shaping transport tire so that the transport tire of balance to be provided, wherein elastomeric material comprises the core of band bundle, casing ply and the tyre bead of optimum location.
Be recognized that so far, early stage at casting process, discharge air and can eliminate by at interval hole in the mould discharges necessity from the material of tyre surface from cavity from the tire tread die cavity, wherein these materials are inflows and can form projection or " milk " in casting process.This projection or " milk " stretch out and take off when mould is removed at tire from tread surface, have to block or grind off in the tire use.In order to prevent these undesirable foreign matters, just be recognized that before the tyre surface cast air discharged that this provides necessity of runner or air vent and still obtain the smooth wrinkle resistant or flawless tread surface of finishing with regard to having eliminated in the tire tread mould from die cavity.This example of just introducing vacuum before forming tire tread in mold of tyre is presented at US Patent No 4,573, in 894 and 5,152,951.
U.S. Patent No. 4,573,394 have set forth a kind of mold of tyre, and this mold of tyre has and is used to receive and the cavity of the tire that is shaped at last.This patent is defined as a surface, and this surface is used for the outside at tire curing process contact tire.Cavity is connected with single vacuum source fluid discharging air at tire curing in early days in the cycle from cavity, thus prevent air and arbitrarily other fluid be clipped in tire and will have become defining of tire tread between the surface of cavity.Therefore eliminated the visual effect of space form in the outside tires.
Similar to ' 894 patent, U.S. Patent No. 5,152,951 also are provided for the eliminate fluid from die cavity in early days in the tire curing cycle.This patent is provided for having defined between the surface by model element the space emptying fluid in mould parting line zone.These two pieces of patents all provide single vacuum source and it and being connected to form sidewall and tread surface of die cavity.Simultaneously, the invention provides and both be used for before elastic mixture imports die cavity air being used to spur airfree mixture again and passing through mould by wherein emptying.Be somebody's turn to do the zone of flowing between filled internal mold and the outer mold walls, move through the core of casing ply, band bundle and tyre bead, thereby form the transport tire of finishing that does not have space or air pocket.
The core of the casing ply that uses in the vacuum forming equipment of the present invention, band bundle and tyre bead is set forth in the U.S. Patent application " Tire Core Package for Use in Manufacturing a TireWith Belts; Plies and Beads and Process of Tire Manufacture ", its sequence number is 10/143,678, submit to by two people among the application's the inventor on May 13rd, 2002, and this application is current unsettled.This patent application proposes a kind of method, and the pre-cure elastomer layer that sandwiches between casing ply that utilization forms on axle and the belt is assembled in the mould, utilizes the rotary casting method to form tire.Equally, one of inventor of the application is that the sequence number of the distribution submitted on May 28th, 2004 is unique inventor of 10/856652 U.S. Patent application " Elastomeric Tire With Arch Shaped Shoulders ".
The present invention be used to form the early stage patent application of the rotary casting equipment that uses in the rotary casting equipment of transport tire and method in early days form the new way of transport tire by elastomeric material, these early stage patent applications show and are discussed at the U.S. Patent application that two people among the application's the inventor submit in the recent period, patent application is the application that is entitled as " Method and Apparatus for Forminga Core of Plies; Belts and Beads and For Positioning the Corein a Mold For Forming an Elastomeric Tire and the FormedElastomeric Tire ", on June 4th, 2004 submitted to, the application number that is assigned with is 10/860997, and be entitled as " Improved Method and Apparatus for Forminga Core of Plies; Belts and Beads and for Positioning the Corein a Mold for Forming an Elastomeric Tire ", on August 2nd, 2004 submitted to, and the application number that is assigned with is 10/809/807.All these early stage patents all relate to the rotary casting method and apparatus and do not relate to vacuum forming equipment and method as described in the present invention.
Summary of the invention
Main purpose of the present invention provides a kind of vacuum forming equipment and method that is used to form transport tire, and transport tire comprises the core of the casing ply, band bundle and the tyre bead that are encapsulated in wherein, and core is optimally located so that the tire of complete equipilibrium basically to be provided.
Another object of the present invention provides a kind of vacuum equipment that is used for forming at single operation elastic tyre, elastic tyre has the core of the casing ply, band bundle and the tyre bead that are encapsulated in wherein, wherein before elastomeric material mix enters mould, air is discharged from elastomeric material mix, and elastomeric material is pulled under vacuum and passes through mould, basically fill among the core layer, between and all spaces of running through, thereby form the tire of the homogeneity of the core of wherein optimally having located casing ply, band bundle and tyre bead.
Another object of the present invention provides a kind of vacuum pouring equipment, it comprises jar, jar places under the high vacuum when receiving the volume of the elastomeric component that mixes at first, and vacuum is the sucking-off air from mixture, subsequently, jar is allowed to pass through jar air bleeding valve and moves to the die cavity that is in the low vacuum the cylinder of atmosphere opening and airfree mixture, wherein, casing ply, the core of band bundle and tyre bead remains in the cavity between internal mold and the external mold surface, and low vacuum spurs airfree mixture through core, loading mould cavity, and allow to be solidified into the tire of finishing of homogeneity.
Another object of the present invention provides a kind of mould, this mould has the parts of cavity as vacuum forming equipment, and vacuum forming equipment has the reservoir that is connected on the vacuum source, with the mixture that receives the elastomeric material component and stand high vacuum, high vacuum enters air sucking-off from mixture in the die cavity under the low vacuum by air bleeding valve to prepare it reservoir at top end opening.
Another object of the present invention provides being connected of reservoir jar and mould annular region, the mould annular region comprises axle, placed on the axle casing ply with separate layer, band bundle and tyre bead tire core and above be added with the coiling of tyre cord, and die cavity is under the low vacuum, and the reservoir jar is under high vacuum, the air that sandwiches in the elastic mixture stream just is removed like this, and when pot valve is opened, airfree elastomeric material mix is just drawn in the die cavity, move through and pass through fully to encapsulate tire core, form the tire of homogeneity.
Another object of the present invention provides a kind of vacuum forming equipment, and wherein the core of tire belt, casing ply and tyre bead will be encapsulated in the optimum position so that the almost completely tire of finishing of balance to be provided in the tire of finishing.
Another object of the present invention provides a kind of vacuum forming equipment of making elastic tyre, wherein in forming process, before elastomeric material mix enters in the mould, basically all air are all by removing in the elastomeric material mix, material passes mould and is pulled under low vacuum, with permeate fully by and around the core of casing ply, band bundle and tyre bead with remain on liner in the die cavity, in single forming operation, form tire, tire is ready to remove from mould after cooling.
Another object of the present invention provides a kind of axle, placed the core of casing ply, band bundle and tyre bead on the axle with liner, be used for being assembled to vacuum forming equipment, vacuum forming equipment comprises jar mixture with reception elastomeric material component, jar is connected on the vacuum source so that high vacuum to be provided in jar, this high vacuum removes captive air from elastic mixture, and airfree mixture passes valve then and enters the die cavity that links to each other with low vacuum, low vacuum pulling mixture is by tire, thus the formation transport tire.
Another object of the present invention provides sealing, is used for being kept perfectly property when jar and mould stand high vacuum and low vacuum respectively.
Another object of the present invention provides a kind of vacuum forming equipment that is used for pouring into a mould at single operation the transport tire of the core that comprises casing ply, band bundle and tyre bead, generates the tire of the homogeneity of complete equipilibrium basically.
The present invention relates to a kind of vacuum forming equipment, it receives the mould that is arranged in wherein, and mould comprises internal mold, and internal mold keeps axle, is provided with the core of casing ply, band bundle and tyre bead on the axle and wherein has liner or separate layer.Inner mold mandrel is used for being assembled to external mold, and the annular surface of external mold has the shape of the outer surface of transport tire, and external mold is easy to open the tire that is formed at wherein to allow to remove.The mould jar is provided for receiving the mixture of elastic component and is connected on the deep vacuum source to remove air from mixture.After air removed, mixture passed needle-valve and enters annular region between inner mold mandrel and the external mold under the effect of the low vacuum of pulling mixture by mould.Encapsulation tire core after elastomeric material mix is passed and transmitted.Set sealing between cover cap and the outer mold top on mold body and jar in equipment, to comprise high vacuum and low vacuum, high vacuum and low vacuum are preferably produced by the vacuum source that separates.
In case receive the elastomeric material mix of fixed volume, jar just sealed and stand high vacuum.Vacuum pulling by jar in port, and be operated in the mixture in jar and do not have air basically, air is captured in wherein in mixed process.Afterwards, in the time of under mould remains on by the low vacuum of the pulling of the port in the cover cap, jar is opened by needle-valve and is open to extraneous air, and enters in mould annular region or the hub area, by low vacuum airfree elastic mixture is drawn to wherein.Mixture by and around core, fully permeate and join on the screw thread and cord of all core constituent, all air that moved before mixture in the mould all flow into cover port, low vacuum is sucked out through this.In fact, needle-valve is need be before jar becomes sky closed and come as under the surrounding air state that occurs in the jar.After cooling, mould is opened and removes thus and comprises the transport tire of finishing of the core of casing ply, band bundle and the tyre bead of location fully.
The practice that utilizes equipment of the present invention to form the method for transport tire in single operation comprises: the elastomeric material component of the mixing of certain volume is entered in the mould jar, the mould jar is preferred but needn't be positioned at the center of mould, mould comprises internal mold and exterior mold parts, and can open the transport tire of finishing to remove at an easy rate after cast.Internal mold serves as or comprises mandrel segment, placed the core of casing ply, band bundle and tyre bead on the mandrel segment and liner or separate layer are wherein arranged, and the annular inner surface of external mold has the tire tread pattern around its mold pressing.
Description of drawings
The present invention can take the physical form of specific component and part configuration, be used to form equipment of the present invention and put into practice step of the present invention, equipment of the present invention and step are shown as preferred embodiment and will describe and be presented at the accompanying drawing that forms a part of the present invention in this manual in detail at this;
Fig. 1 has shown the decomposition diagram of observing from bottom hub plate top, and manifold is equipped with the column that screws in the bottom hub plate herein, is formed for putting into practice the internal mold in the equipment of the present invention used in the method for the present invention;
Fig. 2 A has shown that the internal mold parts among Fig. 1 receive a pair of hard foam core section that is assemblied on the column;
Fig. 2 B has shown that all the hard foam core sections except a pair of are assembled on the wheel hub of bottom as axle, are used to receive the core of the casing ply that is used for transport tire core shelved thereon, band bundle and tyre bead;
Fig. 3 A has shown that assembling and the top hub plate of finishing the hard foam core section are assembled on the hard foam core section;
Fig. 3 B has shown the top hub plate of bolted to the cylindrical bosses manifold top;
Fig. 4 A has shown that the hard core assembly among Fig. 3 has been installed on the axle, this axle is assembled on the pivotal arm, and hard core assembly is shown as and has rotated 90 degree, shown that diverging cone aligns with the side of hard core assembly, and shown that the sleeve aligning that is woven by plies cords is with on the small end that is assembled to diverging cone;
Fig. 4 B has shown the top plan sectional view of cutting open along the line 4B-4B among Fig. 4 A when seeing the hard foam core assembly down, and the diverging cone large-diameter end slides into the center of hard core assembly along diverging cone, has shown that plies sleeve aims at on the small-diameter end portions that is assemblied in diverging cone;
Fig. 4 C is and view like Fig. 4 category-B that difference is that plies sleeve end has been stretched over and surpasses hard core assembly;
Fig. 5 A is and the similar view of Fig. 4 C, only shown a pair ofly to be used for the bladder and the hard plate assemblies of tyre bead centering and to be positioned to plies cords with the end part aligning of plies sleeve;
Fig. 5 B is and view like Fig. 5 category-A, left bladder and hard plate assemblies have only been shown, this assembly is the tyre bead centering plate, entered the plies cords sleeve ends and arrived wherein hardboard and the contacts side surfaces place of core assembly firmly, and shown that tyre bead is held against on the hard core assembly left side by the hardboard edge;
Fig. 5 C is and view like Fig. 5 category-B also to have demonstrated right bladder and hardboard and be assembled in the plies cords sleeve ends, and shown that tyre bead is held against hard core assembly right side by the hardboard edge;
Fig. 5 D is and the similar view of Fig. 5 C only to have shown that the stripper plate and the bladder that engage left bladder are inflated;
Fig. 5 E is and the similar view of Fig. 5 D, only shown that stripper plate has been pushed on the bladder of expansion when air is removed from bladder with controlled speed, cause bladder with plies cords above the tyre bead and folding on the left side of hard core assembly;
Fig. 5 F is and the similar view of Fig. 5 E, only shown that stripper plate has been pressed in the limit place that moves to its stroke on the bladder of having exitted, thereby extends bladder around hard core assembly shoulder, and plies cords is shifted onto before the bladder surface;
Fig. 6 A has shown and top plan view like Fig. 4 category-B, difference is, diverging cone is shown as and is assembled on the hard core assembly, and assembled casing ply and tyre bead on the hard core assembly, and applied separate layer around it, and this separate layer is one deck velveteen tire, and shown and be assembled to the band collar tube of first on the diverging cone and the second band collar tube, the second band collar tube is shown as the fabric that is formed by the transposition section of being with the bundle cord, align with the small end of diverging cone, and use arrow A to show the band collar tube that on the expansion core, moves;
Fig. 6 B has shown that hard core assembly and plies ends extend on the hard core assembly side, and gasket arrangement is between casing ply and band bundle, and the tyre cord of final layer twines around bizet;
Fig. 7 A has shown and view like Fig. 6 category-B, has only shown the velveteen tire that one deck twines around the core circumference;
Fig. 7 B has shown and view like Fig. 7 category-A that also shown spool, continuous cord is left spool by rolling, and around twining by the bizet of the separate layer cover cap of velveteen tire;
Fig. 7 C has shown and view like Fig. 7 category-B only have the tyre cord of the winding that is shown as the cover cap bizet;
Fig. 8 A has shown hard core assembly, and the tire core winding thereon, removes and navigate on the mould base from axle;
Fig. 8 B has shown one of a plurality of tread segments that are assembled together to form outside or external mold;
Fig. 8 C has shown that the tread segments of Fig. 8 B is assembled into the mould outer wall;
Fig. 8 D has shown the top board on the assembly that is installed among Fig. 8 C, has shown centre bore, and the central cylindrical jar of vacuum forming equipment of the present invention is through centre bore assembling thus;
Fig. 8 E has shown the similar view with Fig. 8 D, only shown dome shaped cover, the head end of this cover cap mounting center cylindrical tank, central cylindrical is canned to be fitted on the external mold cover cap, and assembled the central cylindrical jar in the external mold cover cap, and the central cylindrical jar extends upward from centre bore, and has shown first and second vacuum ports in the top of the side that is assembled to the central cylindrical jar respectively and dome shaped cover;
Fig. 9 A has shown the cutaway view of cutting open along the line 9A-9A among Fig. 8 E, and dome shaped cover starts from outer mold top, arrow B has shown that the dome cover cap is reduced on the outer mold top, outer mold top comprises the core that is placed on band bundle, casing ply and tyre bead on the inner mold mandrel part, shown that with arrow C pouring head enters the motion in the opening at the top of passing the high vacuum jar, and used arrow D to show that needle-valve enters the motion of the bottom pore-throat of high vacuum cylindrical tank;
Fig. 9 B is and view like Fig. 9 category-A, only shown that dome shaped cover has closed on the outer mold top, and passing pouring head with the flow of elastomeric materials shown in the arrow E enters in the high vacuum jar, and shown the high vacuum that passes jar port with arrow F, and the air that is sucked out that shows with arrow G leaves flow of elastomeric materials, and shown low vacuum, show with arrow H, low vacuum is passed cover port, will pass the cover port sucking-off with the air shown in the arrow I from die cavity and in the zone of cover cap below;
Fig. 9 C is and view like Fig. 9 category-B, only shown the pouring head closure, and airfree elastomeric material is included in the high vacuum jar and a jar port is shown as and opens, and admits surrounding air, shown in arrow K, enter jar, and show that the needle-valve be in pot bottom to be ready opening, pass flow of elastomeric materials thus, with air push before the flow of elastomeric materials, air is shown as arrow I, and the low vacuum sucking-off that shown by arrow H of air;
Fig. 9 D is and the similar view of Fig. 9 C, only shown that most of elastomeric materials are closed by needle-valve emptying and needle-valve from the high vacuum jar, and shown that elastomeric material has passed and centered on the casing ply that remains on the inner mold mandrel, core and the separate layer of being with bundle and tyre bead, and elastomeric material is shown as the zone of upwards transmitting and just entered the dome shaped cover below, follow the air-flow that shows with arrow I, passing cover port flows out from external mold, low vacuum sucking-off thus by arrow H shows forms thereby finish tire;
Figure 10 has shown the side-looking view sub-anatomy the when external mold of one section tire from Fig. 9 D that uses equipment of the present invention and method manufacturing removed;
Figure 11 has shown the assembled view of the tire of Figure 10; And
Figure 12 has shown the flow chart element schematic diagram that utilizes vacuum forming equipment of the present invention to form the tire institute implementation step of Figure 10 and 11.
The specific embodiment
The present invention is the method and apparatus that forms transport tire with vacuum forming equipment 90 of the present invention, and wherein, the core of band bundle, casing ply and tyre bead is optimally located, and forms the transport tire that is similar to the tire 130 among Figure 11.Similar with those inventors' listed in the application's in this article the prior art part early stage rotary casting method and apparatus, vacuum forming equipment 90 is provided for forming the transport tire of the complete equipilibrium basically that comprises casing ply, band bundle and tyre bead in single operation, then tire is pulled out from mould.
The early stage rotary casting equipment made from the practice of being set forth in the application's prior art part is the same with method, vacuum forming equipment of the present invention as shown in Fig. 8 E and 9A to 9D uses the mould that comprises axle in its cavity part, has placed the core of casing ply, band bundle and tyre bead and wherein be equipped with separate layer on axle.A kind of such configuration of axle is the outer surface of internal mold, and it is used for being provided with the core of casing ply, band bundle and tyre bead thereon, shown in Fig. 1,2A, 2B, 3A, 3B, 4A to 4C, 5A to 5F, 6A, 6B and 7A to 7C.Last core is formed on the inner mold mandrel shown in Fig. 8 A, and has shown the assembling of the external mold that is used to comprise internal mold among Fig. 8 B to 8D.Yet, should be appreciated that, internal mold and outer mold arrangements with its mandrel segment can change, and therefore can in the scope of the present disclosure, replace with other mould configuration, to operate vacuum forming equipment 90 of the present invention, shown in Fig. 8 E and 9A to 9D, thereby make the transport tire that is similar to the tire 130 shown in Figure 11.
In order to form the internal mold among Fig. 3 B, can use internal mold hub base 31a as shown in fig. 1, and internal mold 30 comprises shown in Fig. 2 A and 2B, thereby having the shape of transport tire inner surface by tread segments 45a and 45b are assembled into the cylindrical axle that forms.Inner mold base 31a is shown as has the spider 32 that comprises centre bore 33, and spider 32 comprises elliptical ports 34 at interval and be upwardly stepped to continuous support 35 that column 36 is installed on the support 35 to be extended along the right angle by it.Column 36 is provided with the interval that separates each other, and each column includes threaded nut 37, and nut 37 is fixed on each post end 36a.Outside from column 36, hub base 31a makes progress into the step-like lip 38 that enters, and outside from lip 38, and it becomes the step-like flat portion 39 that enters downwards, and flat portion 39 extends to panel edges.As shown in fig. 1, cylindrical bosses 40 is assembled on the mold hub base 31a.Cylindrical bosses has the centre bore 42 that passes thus and its lower end aligned being assembled on the spider zone 32, and the location is thereon to align elliptical ports 41 at interval with the elliptical ports 34 at the interval of hub base.Cylindrical bosses 40 tightens among the screwed hole 44a that forms in the side of hub base 31a to hole 44 assembling and with bar end of thread 43a and keeps in position by bar 43 being passed lateral longitudinal.
Fig. 2 A has shown wheel hub 40, and wheel hub 40 is assembled to that internal mold hub base 31a goes up and the end of thread 43a by bar 43 is screwed among the hub base screwed hole 44a and keeps thereon, as shown in Figure 1.Fig. 2 A has shown the hard foam core top section 45a of formation axle and the installing hole of base section 45b respectively, and each hard foam core partly receives one of column 36 of assembling thus.In Fig. 2, except a pair of, hard foam core top section 45a and base section 45b that other are all have been assembled on the column 36, and nut 37 is shown as and is screwed on the column end of thread 36a.
Fig. 3 A has shown the top of wheel hub 40, the hard foam core top section 45a and the base section 45b that wherein form axle are assembled on it, and align with wheel hub top 31b in the top of wheel hub 40, should be appreciated that hub base and top 31a and 31b are respectively mirror image each other.Fig. 3 B has shown the wheel hub top 31b on the top that is assembled to wheel hub 40, wheel hub 40 has the elliptical ports 41 at the interval of passing wheel hub top 31b formation, wheel hub top 31b comprises elliptical ports 47, elliptical ports 41 in elliptical ports 47 and the wheel hub 40 and the elliptical ports 34 among the hub base 31a are alignd, this just provides the flow path by assembly, and shown bolt 47, each bolt 47 is all aimed at and is used for being screwed into nut 37 through wheel hub top 31b.When each nut 37 is shown as the end of thread 36a that is screwed to each column 36 when going up, just finished the assembling of internal mold 30, and the hard foam core of assembling partly serves as the axle of the tire core 75 that is used for setting up Fig. 8 A thereon.
In order to prepare to form the tire core 75 as shown in Fig. 4 A, internal mold 30 has the axle 48 of centre bore 33 installations of aliging among the hub base of passing and top 31a and the 31b, part as erected configuration, erected configuration allows internal mold 30 to pivot by 90 degree from level, and axle 48 outwards extends with the right angle from pivot post 49.Pivot post 49 preferably includes pivoting articulation 50, and pivoting articulation 50 allows internal mold 30 to be pivoted to level, and its base 51 is arranged to allow the rotation of 360 deg.
For the casing ply as shown in Figure 10 that is formed for placing the vacuum forming equipment of the present invention as shown in Fig. 4 A, the core 75 of being with bundle and tyre bead, one deck spacing material 52 is reeled around the bizet of internal mold 30, and this spacing material 52 is preferably the velveteen tire of at least two casing plies or multilayer.Diverging cone 53 is shown as frustum, has major diameter front end 53a and minor diameter rear end 53b, and is assembled on the axle 48 to slide along axle 48.Diverging cone 53 is used to receive sleeve 54, sleeve 54 is the sleeves by the plies cords braiding, in order to put into practice the present invention, plies cords is preferably staple fibre or cotton cord, in fact, have now found that staple fibre or cotton cord can receive the flow of elastomeric materials that enters the cord surface, the cord and the elastomeric welding that provide opposing to separate.If necessary, sleeve can comprise the strand of elastomeric material, and elastomeric material is woven in wherein to allow the minor diameter rear end 53b that is assembled to diverging cone at sleeve also to extract thus.
Fig. 4 B has shown diverging cone 53, diverging cone 53 make its front end 53a be moved beyond spacing material 52 layer the edge and arrive about center of bizet of the axle of internal mold 30.Allow the diverging cone of this motion to comprise preceding inwall 55a of at interval parallel and back inwall 55b, preceding inwall 55a and back inwall 55b have centre bore 56a and the 56b that runs through thus respectively, and centre bore 56a and 56b aligning are with receiving axes 48.Axle 48 supports when diverging cone 53 slides before and after it and guiding diverging cone 53.
Fig. 4 C has shown the parts of Fig. 4 B, and difference is that the front portion of plies sleeve 54 has been pulled the axle of crossing internal mold 30, and the rear portion is still supported by diverging cone 53.
Fig. 5 A has shown the view of Fig. 4 C, difference be a pair of bladder and hardboard 60 with the end part aligning of plies sleeve 54.Each bladder and hardboard 60 comprise flexible bladder 62 and hardboard 61, and hardboard is hard metal or plastics and is used in the core forming process the feel relieved side of core of tyre bead.Hardboard 61 is installed on the side of bladder 62 of balloon type, and bladder 62 will be by the air of valve rod 63 filling tape pressure.Tyre bead 59 is shown as and slides into reception along sleeve 54 and be assemblied in the position of the end of the hardboard 61 on the sleeve 54 against sleeve 54, and demonstrates the separate layer 52 of reeling around internal mold 30.When arranging like this, sleeve 54 is shown as and passes through thus.
Fig. 5 B is and view like Fig. 5 category-A that bladder and hardboard 60 engage with tyre bead 59 at edge 61a of this place's hardboard 61 by the end of sleeve 54 arrival plies sleeve 54 on the left of only demonstrating.Diameter can be assembled by passing air pressure that valve rod 63 suitably fills bladder 62 or empty to expectation to have it, the passage of bladder and hardboard 60 can be formed by sleeve 54.
Fig. 5 C is the view similar to Fig. 5 B, has only shown that wherein two bladders and hardboard 60 all enter the end of plies sleeve, and wherein tyre bead 59 is clamped on the side of internal mold 30, and plies sleeve 54 beginnings are folding around tyre bead 59.
Fig. 5 D is the view similar to Fig. 5 C, only shown that plies sleeve end is cut into short length to end 54a and 54b, and the bladder 62 that demonstrates left bladder and hardboard 60 is by passing the pressed gas that bar 63 enters and expand shown in the inner arrow as pointing to.By this expansion, plies sleeve end 54a brings up to the side of internal mold 30 and aligns, and has shown that pressing plate 64 contacts and pushes thereon with the bladder 62 that expands.This pressing plate comprises flat piston end 65 that its front contacts with the bladder 62 of expansion and the push rod end 66 that meets at right angles and extend from the back of pistons end.Certainly, plies sleeve 54 can have shorter length avoiding blocking sleeve ends, and is that plies sleeve end 54a and 54b can long and folding at the internal mold bizet in the scope of the disclosure still.
Fig. 5 E has shown that pressing plate 64 has entered bladder 63, and air draws back from bladder, shown in the arrow of outside sensing, also demonstrates bladder among the figure and is tending towards folding around the shoulder of internal mold 30.The folding cord of being propulsive plies sleeve end 54a of this bladder is away from tyre bead 59, and cords ends folds on the plies sides and stretching process internal mold 30.This operation can be included in plies cords ends owing to before the venting of bladder 62 is moved, use adhesive for example pre-cure elastomer to the plies cords applying coating on the tyre bead.
Fig. 5 F is and the similar view of Fig. 5 E wherein only to have shown because air continues by bar 63 extractions bladder 62 further to be exitted.Bladder thus arranged flows around the shoulder of internal mold 30, and in this flowing, the bladder surface is tending towards stretching plies cords ends 53a away from tyre bead 59, and promotes the plies cords fluid-tight engagement of plies cords ends and tyre bead top.This operation is tending towards forcing all captive air to flow out from binding material and between plies cords and the plies cords ends.Though only shown the operation of left bladder and hardboard 60, but, clearly, the operation of right bladder and hardboard 60 is identical with it, and when bladder and hardboard are removed, bladder and hardboard 60 can be operated the core that produces casing ply and tyre bead simultaneously, are used to receive the band bundle or the multi-ribbon bundle that apply around the internal mold bizet, and be as mentioned below.
A kind of method has been set forth in the above-mentioned explanation of Fig. 4 A to 4C and 5A to 5F, and this method is used for being provided at the casing ply that the layer on the mandrel segment of internal mold 30 forms and the core of tyre bead.In Fig. 5 A to 5F, plies cords is shown as cutting to fold into the shoulder that does not still extend beyond internal mold on the tyre bead.But, should be appreciated that in the scope of the present disclosure that plies ends can fold crosses the axle bizet, intersected with each other, this depends on the length of cord plies ends.
As shown in Figure 6A, the core of casing ply among Fig. 5 A to 5F and band bundle has received one or more separate layer 67, and separate layer 67 is preferably the velveteen tire section around the axle bizet setting of internal mold 30.Afterwards, band bundle spreader 68 extends near the center of internal mold bizet or its, similar or the function class of band bundle spreader 68 and truncated cone plies spreader 53 seemingly, and in fact can be identical with it, as long as its large-diameter end can be assembled in the internal mold and form on the side of the casing ply with separate layer on it.When arranging as shown in Fig. 6 A, the first band bundle, the 69 and second band bundle 69a (if necessary) can pass the small-diameter end portions of band bundle spreader 68 and along its slip, as shown by arrow A.The first band bundle 69 is across the bizet assembling of internal mold 30, and separate layer 70 is being followed in the back, and shown in Fig. 6 B, bundle 69a and then second is with again in the back.Then, remove band bundle spreader 68 and top portion interlayer or laying 71 be applied on the end face of the second band bundle 69a, as shown in Fig. 6 B and 7A.Preferred spacing material is four layers a velveteen tire section, thereby about eight inches wide and twine with the casing ply clamping in position around bizet along circumference.The side of last separator spacer layer 71 spurs downwards around the shoulder of internal mold 30 again, engages with casing ply 54, shown in Fig. 7 B.At last, be shown as the tyre cord of untiing from spool that is shown as continuous cord 72 among Fig. 7 B, apply by twining one tyre cord around band Shu Yuanzhou, and twine and start from a side of bizet and proceed to another bizet side, as shown in Fig. 7 C, finish the assembling of the core 75 of casing ply of the present invention, band bundle and tyre bead like this.
For the formation of the band bundle described in Fig. 6 A and the 6B with apply, the sleeve of band bundle 69 and 69a preferably forms separately by weaving method, wherein band is restrainted the cord bias angles that cord is woven together and intersects and become 24 degree with the center of band Shu Yuanzhou, after the first band bundle 69 is assembled on the internal mold, one deck separate layer 70 is reeled around the circumference of the first band bundle 69, separate layer 70 is for the gauze material and be preferably the velveteen tire, and approximately has four layers.Then, the aforesaid second band bundle 69a is set above separate layer 70.Fu Jia band bundle if desired, each band bundle can separate from separate layer below and top with being with to restraint, and this separate layer is preferably velveteen tire section.Final separate layer 71 is applied to top band Shu Shangfang.Tire coiling 72 is applied on the final separate layer 71, wherein tire coiling 72 constitutes by the tyre cord that winding is preferably the Kevlar cord, as mentioned above and as shown in Fig. 7 B, launch and twine from spool 73, and twine from a side of bizet and proceed to opposite side around bizet.This winding can be twined the Kevlar cord by the rotation internal mold and on inner mold circumference and be realized, thereby finishes the formation of core 75 on internal mold 30 axles.
Core 75 as shown in Fig. 8 A, 8C and 10 rotates also and moves on the outer mold base 85, and as shown in Fig. 8 C, outer mold base 85 receives tread segments 86 or has the ring of the tyre surface that forms around the bizet of its inner surface (not shown).Tread segments is numbered individually and is assembled around outer mold base 85 with numerical order, surrounds outer mold base and also forms cylinder, shown in Fig. 8 C.Be used to put into practice tread segments 86 of the present invention and comprise sealing 86a, as shown in Fig. 9 A to 9D, the sealing 86a be assemblied between the adjacent tread segments 86 and tread segments 86 and outer mold base 85 and outer mold top 88 between, as shown in Fig. 8 D, and outer mold base 85 and outer mold top 88 show with cutaway view in Fig. 9 A to 9D.Being provided in the vacuum forming process of tread segment seals 86a stops elastomeric material to flow out from the cavity between internal mold and the external mold under vacuum, and be as mentioned below.Shown in Fig. 8 D, outer mold top 88 has been assembled on the cylinder of the tread segments 86 of having finished external mold.Outer mold top 88 comprises vacuum forming equipment top cover 89, top cover 89 comprises centre bore 89a and is used to be assemblied in apparatus top plate 91, apparatus top plate 91 is assemblied on the bead alignment plate 92a of top, and respectively the space 91a and 94 between apparatus top plate 91 and top bead alignment plate 92a as the air port.Sealing 96 is assemblied between the surperficial 95a of the edge of the centre bore 88a that forms by outer mold top 88 and the cylindrical tank 95 that the obstruction air passes through thus.When sealing 86a is provided between the equipment bay 87 of tread segments 86 and outer mold top 88 and outer mold base 85, just sealed the mould toroidal cavity of wherein having located core 75.
The equipment bay 87 support combinations bead alignment and the needle-valve location-plate 92b of outer mold base 85, and edge 93b with outer groove, the edge 93a of the outer groove of edge 93b and top bead alignment plate is similar, supporting tyre bead 59, and comprise centre bore 96a, in the operation of vacuum forming equipment 90 of the present invention, the neck pars intermedia 101 of needle-valve 100 passes this centre bore 96a and moves up and down.Poor for the radius of outer surface 95a that compensate cylindrical tank 95 from its top 105 to its underpart, the stopper 110 of assembling by the opening 33 in the following spider 32 can be provided, and wherein the bottom of cylindrical tank 95 is necked up to nozzle-end 108 from 106 as funnel area 107.On the outer surface that is shaped as the funnel area 107 of assembling and being sealed in cylindrical tank 95 of stopper 110, and have longitudinal center hole 111, the nozzle end 108 of cylindrical tank 95 is passed this centre bore 111 and is assembled.Sealing 112 is provided between nozzle-end 108 and the consent 111 to forbid that elastomeric material travels up to cylindrical tank 95 in the vacuum forming operating process.
The nozzle end 108 of cylindrical tank 95 comprises sealing 112 and serves as the seat of the head end 103 of needle-valve 100, head end 103 is shown as has cone-shaped, and the point of cone moves in the nozzle-end of cylindrical tank 95 until the edge of contact nozzle end, the slope of head end 103 108, thereby seal flow.The mobile of head end 103 is provided at when needle valve body 101 moves up and down by lifting or reduction valve body lower end 102.In fact, for example, the servomotor that is operationally connected to the piston on the valve body lower end 102 can be provided for needle valve movement, make cylindrical tank for flow of elastomeric materials from nozzle end 108 outflow and open and close is as mentioned below.
If will prepare vacuum forming equipment 90 to form transport tire, cover cap 90 is reduced on the vacuum forming apparatus top plate 91 as shown by arrow B, 121 places are sealed in its upper at seal, and the side along the surperficial 95a of cylindrical tank 95 is passed, and seal 127 is assemblied between the edge of centre bore 89a of the surperficial 95a of cylindrical tank 95 and cover cap 89, is used to be included in the zone of cover cap below.When cover cap 89 kept in position, in order to prepare for cast, pouring head 116 was reduced to cast seat 118, and as shown by arrow C, and needle-valve moves up, as shown by arrow D, and with closed-nozzle end 108.Afterwards, shown in Fig. 9 B, the elastic mixture of the component 126 of measured amount is poured in the cylindrical tank 95 by cast seat 118, and the operator observes by the sight glass 122 among the surperficial 95a that is installed in cylindrical tank and jar is filled.Before cast, contiguous its top of deep vacuum source is connected on the cylindrical tank port one 25 in the side that is assembled to cylindrical tank, and the low vacuum source is connected on the cover port 97 of assembling by cover cap 89, thereby the preparation of finishing vacuum forming equipment 90 flows into cylindrical tank 95 to receive elastomeric material, shown in Fig. 9 B.Elastomeric material is to be poured into the mixture of the component in the cylindrical tank 95 in the outside combination of mould.Preferred ingredients is respectively liquid isocyanates and liquid polymer, and when their combinations and curing, they are selected to form has desired hardness or the derometer hardness elastomer that is used for automobile or similar transport tire.
Fig. 9 B is and view like Fig. 9 category-A, also shown pouring head 116 seat in cast seat 118, and polyurethane stream 126, as shown by arrow E, the openend by pouring head pours into, and flows in the cylindrical tank, upwards to fill from nozzle-end 108 jar.In the jar filling process, high vacuum shown in the arrow F is by port one 25 sucking-offs of cylindrical tank 95, to in elastomeric material component mixed process, be mixed in air sucking-off from the elastomeric material component mixture wherein, as shown by arrow G, move through the port one 25 of cylindrical tank.In the jar filling process, the operator sees through sight glass 122 and observes the filling situation.In addition, in vacuum forming equipment 90, prepare in the vacuum forming of transport tire, low vacuum, as shown by arrow I, by sucking-off air the zone of cover port 97 under die cavity and cover cap 89, as shown by arrow I.
Fig. 9 C is and view like Fig. 9 category-B to have shown that also the elastomeric material mix of intended volume has been poured among the cylindrical tank 95.Subsequently, high vacuum as shown by arrow J, allows air communication to cross jar port one 25 and enters, shown in arrow K from removing to the jar port one 25 of atmosphere opening.When port one 25 was opened, needle-valve was opened, and allow the stream of elastomeric material mix 126 to flow through the cone-shaped end 103 of putting upside down of needle-valve 100, and mixture had removed all air basically.The FLOW VISUALIZATION of elastomeric material mix 126 has just flowed out and has moved to the top surface top of stopper 110 belows and bottom bead alignment plate 92b from nozzle-end 108, to flow into the core 75 of annular die cavity and casing ply, band bundle and tyre bead by wherein, shown in Fig. 9 D.
Fig. 9 D is and the similar view of Fig. 9 C, the elastomeric material that has also shown cast has passed needle-valve 100 and has distributed in whole die cavity, this die cavity is the annular region between internal mold and the external mold, this annular region comprises the core 75 of the casing ply, band bundle and the tyre bead that form transport tire 130, as shown in Figure 11, and needle-valve 100 allowing air in jars 95 closed before moving out nozzle-end 108 through the surface of needle-valve head end 103.Elastomeric material is shown as has filled cavity and has only upwards transmitted along the central opening 91a of the outer surface 95a of cylindrical tank 95, vacuum forming apparatus top plate 91 and 94 wall and top bead alignment plate 92a respectively.Elastomeric material mobile is as the response to as shown by arrow H low vacuum, low vacuum is attracted by cover vacuum port 97, and as shown by arrow I before elastomeric material flows air extract out and by cover vacuum port 97 discharges towards cover port 97.Because air is discharged for 89 times the process of the cavity between internal mold and the external mold of flowing through from cover cap by port 97, the port of cylindrical tank 95 keeps opening to ambient air as shown by arrow J at elastomeric material.Subsequently, cover cap 89 starts from outer mold top 88, and external mold disconnects to remove the tire of finishing thus.The tire of finishing is similar to the tire 130 shown in Figure 11, and it comprises the core 75 among Figure 10.
Figure 12 has shown the flow chart element schematic diagram of the summary of the step of carrying out in utilizing aforesaid vacuum forming equipment 90 formation elastic tyres.Frame 201 and 202 has shown formation and external mold thereon the cooperation of core on the heart shaft part of internal mold of casing ply, band bundle and tyre bead, forms a mould, and this mould has the core that occupies the annular region between internal mold and the external mold.The sealing that wherein is combined together is positioned between internal mold and the external mold section so that the airtight path by annular region to be provided, and wherein transport tire core 75 remains in this annular region.Against vacuum former 90, shown in frame 202 and as mentioned above, dome shaped cover is assembled on the outer mold top surface, the sealing and the cylindrical tank that engage wherein are assembled in the centre bore that passes cover cap and connection internal mold and external mold, closing cap hole and outer mold top provide the annular region that comprises core to the Kevlar from the needle valve end of jar to entering the flow path of outlet in the zone of cover cap below abreast with jar.Shown in frame 203, pouring head has been assembled in the jar top, and shown in frame 204, the taper head end of needle-valve has moved into the end sealed engagement with jar releasing tube, seals flowing of process thus.When arranging like this, because nine ten six (96) at least percent high vacuum is by a jar port sucking-off, sucking-off air from jar, shown in frame 205, and eight ten five (85) at least percent and be not more than 95 (95) percent low vacuum by passing the port sucking-off of cover cap, sucking-off air under cover cap and the mould is shown in frame 206.Afterwards, just the elastomeric material that is mixed by component injects by the tank top, and as described in frame 207, and high vacuum removes air from elastomeric material mix.When the elastomeric material of expectation volume or weight had injected jar, high vacuum finished, and shown in frame 208, and jar is to atmosphere opening.In atmosphere opening, needle-valve is opened at jar, and shown in frame 209, and elastomeric material enters the mould annular region, moves through core, and the air of needle-valve in jar to follow elastomeric material closed before passing through.If needle-valve is also not closed to prevent that gas from passing through, observe the closed needle-valve of operator that elastomeric material is discharged from mold top plate, shown in frame 210, and end is by the low vacuum of cover port sucking-off, shown in frame 211.The new transport tire that forms allows in the inner cooling of mould and solidifies, and shown in frame 212, mould is broken and transport tire is removed then, shown in frame 213.
Though in this demonstration with described the preferred embodiments of the present invention that are used for forming the vacuum forming equipment of tire at single operation, but be to be understood that, in the main body that does not break away from following claim, for at the variant of the material of the equipment that forms described tire and method and use with change and all be fine, and its rational equivalent is all regarded the present invention as.
Claims (16)
1. vacuum forming equipment that is used to make transport tire, described transport tire comprises the core of casing ply, band bundle and the tyre bead made by elastomeric material, described equipment comprises: the mould that is formed by internal mold and external mold, internal mold comprises axle, be placed with the transport tire core of casing ply, band bundle and tyre bead on the described axle, and described core remains in the annular region between internal mold described in the described mould and the external mold, and described external mold is arranged to be installed on the described internal mold; Be used to make the air current sealed device in the described annular region and the described mould outside; Jar, described jar is passed through its open top and flows with the transfer elastic material, and have the valve gear that is assembled in described jar, thereby provide described elastomeric material to enter into thus wherein to have located the controlled flow of described annular region of the described core of casing ply, band bundle and tyre bead; Enter the lane device of the described annular region between described internal mold and the external mold from described valve gear; First port device, be installed to described jar in to be connected on the high vacuum source, be used for sucking-off air thus; Be arranged to be installed to the cover cap on the described external mold, have the interior zone of opening, described interior zone is connected to receive the stream from described annular region; And second port device, described second port device is installed in the described cover cap to be connected on the low vacuum source.
2. vacuum forming equipment as claimed in claim 1, it is characterized in that, the cylinder of the described jar center assembling for the internal mold that passes connection and external mold, and described cylinder is assemblied in wherein pouring head at its top end opening with reception, described pouring head is opened with the mixing logistics of transfer elastic material component and in its lower ends downward constriction and is entered in the pipe, and the openend of described pipe is the seat that is used for as the needle-valve conical nose of valve gear.
3. vacuum forming equipment as claimed in claim 2, it is characterized in that, described needle-valve comprises conical nose, has the bar of blunt end part, described blunt end part is relative with conical nose, described conical nose is contacted by piston apparatus, described piston apparatus is used for moving up and down described blunt end part, bar and conical nose along passing the hole that the bottom bead alignment plate forms, and described bottom bead alignment plate is mounted to the bottom that strides across internal mold and has the edge of the tyre bead below, bottom that is used to be positioned at core.
4. vacuum forming equipment as claimed in claim 3 is characterized in that, also comprises the top bead alignment plate, and described top bead alignment plate is mounted to the top that strides across internal mold and comprises the edge of the tyre bead top, top that is used to be positioned at core.
5. vacuum forming equipment as claimed in claim 2, it is characterized in that, described cover cap forms dome shape, described cover cap has the interior zone of opening, and described cover cap is assembled into and strides across outer mold top surface and comprise the sealing that is arranged between described cover cap edge and the described outer mold top surface, and cylindrical tank pass cover cap centre bore assembling and comprise the edge that is arranged in described cover cap centre bore and the outer surface of described cylindrical tank between sealing.
6. vacuum forming equipment as claimed in claim 4, it is characterized in that, described lane device extends and through the top bead alignment plate around its inner mold mandrel of having placed core between the bead alignment plate of bottom from needle-valve, is communicated with open area under the dome shaped cover with the outer surface along cylindrical tank.
7. vacuum forming equipment as claimed in claim 1 is characterized in that, described jar comprises the sight glass that is assemblied in its side; And described first port device is the outward extending open tube in top from described jar.
8. vacuum forming equipment as claimed in claim 1 is characterized in that, described second port device is from the outward extending open tube of cover cap.
9. method of using mould that the vacuum forming equipment utilization has annular region to form elastomeric transport tire, in described annular region, the core of casing ply, band bundle and tyre bead remains on the axle, described method comprises: the assembling mould, described mould has the core of casing ply, band bundle and tyre bead in the annular region of remaining on, described annular region is at the opposite end opening, and described mould comprises that sealing is to prevent not the outflow by described annular region opposite end; Top seal at described mould engages ground assembling cover cap, and described cover cap comprises the opening port that passes installation thus; Jar that the location has open top, described jar comprise the discharge port that extends from top area and its bottom the installation valve seat so that flow of elastomeric materials by described valve seat and enter one of described annular region opposite end; And valve gear, described valve gear comprises mobile member with assembling and be closed on the described valve seat, and described valve gear is arranged to lead to an end of described mould annular region to flow by liquid thus; Apply high vacuum with from described cylinder sucking-off air by the described jar port of discharging; The stream of the measurement of the elastomeric material that mixes is delivered in described jar by open top, and described high vacuum sucking-off air from elastomeric material mix; Apply low vacuum by the port that is communicated with the mould annular region that passes described cover cap assembling; Pass through in case pour into the elastomeric material of the intended volume in described jar, just remove vacuum and described port atmosphere is opened wide, and valve gear opens so that elastomeric material enters in the mould annular region, and elastomeric material is spurred thus by low vacuum; Closed described valve gear before all elastomeric materials have flow to described mould annular region thus; And end described low vacuum; Thereby after allowing mould cooling cured elastomeric materials, mould is opened and is removed the transport tire of new formation.
10. method as claimed in claim 9 is characterized in that, described cover cap has dome shape and described port by its end face assembling and enter in the cavity between cover cap and the mould top.
11. method as claimed in claim 9 is characterized in that, described jar is cylinder and by passing the centre bore assembling of cover cap and mold hub, and described valve gear is installed in the pot bottom to be communicated to the lower end of mould annular region.
12. method as claimed in claim 11, it is characterized in that, described valve gear is a needle-valve, comprise that tapered tip is with in the end that sits on jar, comprise being assembled into the straight-bar that slides up and down along the passage that passes the formation of mould base plate, and comprise that the bottom is to be installed to the device that is used to move up and down described needle-valve bottom.
13. method as claimed in claim 11 is characterized in that, also comprises the sight glass that is installed in the cylindrical tank with the joint top of cover cap, the operator can see through described sight glass view filling elastic material mixture in the cylindrical tank.
14. method as claimed in claim 11 is characterized in that, described elastomeric material mix is poured into by pouring head, and described pouring head is passed the cylinder end sealing and engaged assembling.
15. method as claimed in claim 9 is characterized in that, described high vacuum is at least 96 (96) percent.
16. method as claimed in claim 9 is characterized in that, described low vacuum is at least 85 (85) percent and be not more than 95 (95) percent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2005/026911 WO2007061399A2 (en) | 2005-11-23 | 2005-11-23 | Method and apparatus for vacuum forming an elastomeric tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101287590A true CN101287590A (en) | 2008-10-15 |
Family
ID=38066743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800125449A Pending CN101287590A (en) | 2005-11-23 | 2005-11-23 | Method and apparatus for molding elastic tire in vacuum |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1954479A2 (en) |
| JP (1) | JP2009516609A (en) |
| CN (1) | CN101287590A (en) |
| CA (1) | CA2554804A1 (en) |
| WO (1) | WO2007061399A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114340917A (en) * | 2019-09-03 | 2022-04-12 | 詹姆斯·安德鲁·麦基 | Emergency safety valve for tyre |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL302462A (en) * | 1962-02-15 | |||
| JPS533422B2 (en) * | 1973-08-07 | 1978-02-06 | ||
| JPS55150340A (en) * | 1979-05-12 | 1980-11-22 | Ohtsu Tire & Rubber Co Ltd | Flexible hollow core for manufacturing casting tire |
| US4287930A (en) * | 1980-04-11 | 1981-09-08 | The Goodyear Tire & Rubber Company | Tire and method of reinforcement |
| US4272309A (en) * | 1980-05-01 | 1981-06-09 | The Goodyear Tire & Rubber Company | Process for molding reinforced articles |
-
2005
- 2005-11-23 EP EP05857805A patent/EP1954479A2/en not_active Withdrawn
- 2005-11-23 WO PCT/US2005/026911 patent/WO2007061399A2/en active Search and Examination
- 2005-11-23 JP JP2008542287A patent/JP2009516609A/en active Pending
- 2005-11-23 CN CNA2005800125449A patent/CN101287590A/en active Pending
- 2005-11-23 CA CA002554804A patent/CA2554804A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114340917A (en) * | 2019-09-03 | 2022-04-12 | 詹姆斯·安德鲁·麦基 | Emergency safety valve for tyre |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009516609A (en) | 2009-04-23 |
| WO2007061399A2 (en) | 2007-05-31 |
| WO2007061399A3 (en) | 2008-04-24 |
| CA2554804A1 (en) | 2007-05-23 |
| EP1954479A2 (en) | 2008-08-13 |
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