CN203527725U - Tire segmented mold vulcanizer - Google Patents
Tire segmented mold vulcanizer Download PDFInfo
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- CN203527725U CN203527725U CN201320667212.6U CN201320667212U CN203527725U CN 203527725 U CN203527725 U CN 203527725U CN 201320667212 U CN201320667212 U CN 201320667212U CN 203527725 U CN203527725 U CN 203527725U
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Abstract
The utility model discloses a tire segmented mold vulcanizer which comprises a mold opening/closing oil cylinder, a mold, a tire lifting device, a stress framework and a central clamping device between a machine base and the mold, wherein the central clamping device comprises a clamping disk, a bladder, a bladder barrel, an inlet/outlet internal pressure pipe, a clamping oil cylinder, an upper pressure plate and a transition sleeve below the upper pressure plate; an upper ring opening of the bladder is clamped between an upper clamping disk and a middle clamping disk; a lower ring opening of the bladder is clamped between the middle clamping disk and a lower clamping disk; a piston rod of the clamping oil cylinder penetrates through the transition sleeve and the upper pressure plate and is fixedly connected with the upper pressure plate; the upper end of the bladder barrel is fixed to a lower heat plate; the lower heat plate is fixed to the machine base. According to the tire segmented mold vulcanizer, the bladder penetrates through a tire by controlling the central clamping device and can better make contact with and apply a pressure to all parts of an inner layer of the tire at the same time under the action of an internal pressure medium, and the pressurization process is more uniform, so that the uniformity and the balance of the vulcanized tire are improved.
Description
Technical field
The utility model relates to tyre rebuilding processing technique field, relates in particular to a kind of capsule that adopts and as inner bag, carrys out the tire vulcanizers with segmented mold of retreading vulcanizing tire.
Background technology
Developing a circular economy is a Major Strategic of national economy social development, and tyre rebuilding utilization is an important content wherein.So-called renovation, polishes while losing serviceability when the decorative pattern of tire polishes or approaches exactly, and by the skin of out of use old tire, after polishing, tread mix in stickup, then vulcanize, makes it again to have use value.Manufacture the cost 70% of tire on carcass, if a tires does not renovate utilization, with regard to equaling, the value of a tires 70% is wasted.Generally, a tires can renovate three to five times, even more.At present, domestic tyre retreading factory generally adopts curing bag to carry out tyre retreading as inner bag, and the method labour intensity is large.Along with the raising of car speed, more and more higher to the requirement of wheel balance performance, adopting capsule to carry out retreading vulcanizing tire as inner bag has been trend of the times.The effect of capsule is mainly that inside is filled compressed gas, inflated with nitrogen or filled superheated water etc. in tire vulcanization process.It is upheld, prop up tire and form interior pressure vulcanized tyre.Its advantage is that heat conduction is fast, and efficiency is high, and labour intensity is low, easy and simple to handle.
Existing retreading vulcanizing machine is mainly two-half die and horizontal vulcanizers with segmented mold.The vulcanizer of two-half die is mainly by patrix, counterdie, support, folding mould cylinder, hinge axis, locked mode screw mandrel, the compositions such as locking nut, patrix and counterdie concentric fit, counterdie is connected with support, folding mould cylinder is positioned at, the both sides of counterdie, piston rod external part is connected with patrix, the opening and closing of the flexible drive patrix by piston rod, locked mode screw mandrel circle distribution is in the periphery of upper and lower external mold, locked mode screw mandrel one end is connected with lower external mold, the other end coordinates by locking nut and screw mandrel, can reach the object of upper and lower mould locking, thereby realize the sulfuration of tire in upper and lower mould.Yet this mould is full circle, due to design defect and improper use die orifice is yielding and dislocation, its decorative pattern easy damaged, gets tire difficulty, the particularly taking-up of steel wire radial-ply tyre, often damages tire.Therefore,, for the problems referred to above, there is horizontal vulcanizers with segmented mold.
Horizontal vulcanizers with segmented mold is mainly comprised of support, upper and lower side form, folding mould device, unlocking mold device, diamond plate, manipulator etc., support is positioned at board bottom, upper and lower side form is provided with vaporium so that heating sidewall and seam, upper side form opening and closing device, under the effect of oil cylinder, makes side form opening and closing; Open, clamping apparatus by curved connecting plate drive a plurality of fan-shaped adjustable pieces along gathering sill do radial contraction or expansion realize opening or closing up into a full circle of diamond plate, thereby reach the object that tire vulcanizes within closing up into the model of full circle.Yet the opening of this machine, locked mode are radially, and assembly precision is high, so tire will be realized out, the object of locked mode, often machine profile is larger, and has increased maintenance difficulties and maintenance cost.
Publication number is CN 202572744U, the Chinese patent literature that open day is on December 05th, 2012 discloses a kind of high accuracy side plate frame type hydraulic tyre vulcanizer, comprise main frame support, mounting mechanical arm of tyre, model open-and-close mechanism, central authority, pressing mechanism, vulcanizing chamber and disassembling mechanism of tyre, it is characterized in that: described main frame support is connected to form by two separate units, each unit comprises base, side plate, be positioned at the guider on side plate, crossbeam, locked mode cylinder, be positioned at clamping apparatus and the folding mould oil cylinder of locked mode cylinder end, crossbeam and folding mould oil cylinder join and along guider, make upper and lower straight line die open/close movement under it drive, locked mode cylinder and clamping apparatus are installed on crossbeam, during locked mode, clamping apparatus is fixedly connected with side plate, described disassembling mechanism of tyre comprises and unloads tire dolly, unloads tire dolly and is coupling on main frame support, is also provided with and the rotary oil cylinder that unloads tire dolly and join on main frame support, unloads and on tire dolly, is provided with hoist cylinder and unloads tire pawl with hoist cylinder joins.
This patent documentation is owing to adopting " locked mode cylinder and clamping apparatus are installed on crossbeam; crossbeam and folding mould oil cylinder join and make upper and lower straight line die open/close movement along guider under it drives " such structure, by mounting mechanical arm of tyre and the cooperation of unloading tire dolly, green tire is positioned over and on mould, carries out die sinking campaign, central authority capsule can not contact pressurization so that stress distribution is unequal to each portion of inner layer of tire simultaneously, and uniformity, the balance of vulcanizing the tire are poor.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of tire vulcanizers with segmented mold, the utility model is set up center clamping device between support and model, by control centre's clamping device by capsule injection tire, can make capsule under inner pressure medium effect, to each portion of inner layer of tire, contact pressurization better, pressurising is more even simultaneously, thereby improves tyre evenness and the balance of vulcanizing.
In order to realize foregoing invention object, the technical solution adopted in the utility model is:
A tire vulcanizers with segmented mold, comprises hot plate, lower hot plate, folding mould oil cylinder, gland, model, cope down device and stress frame, described stress frame is by entablature, support, wallboard forms, and gland is suspended on entablature by the piston rod of folding mould oil cylinder, and cope down device one end is fixed on stress frame, it is characterized in that: also comprise the center clamping device being arranged between support and model, described center clamping device comprises clamping disk, capsule, capsule cylinder, pressure pipe in turnover, clamping oil cylinder, top board and the spacer shell that is positioned at top board below, described clamping disk is by the upper chuck linking together, middle chuck and lower chuck form, and the upper ring hole of described capsule is clamped between upper chuck and middle chuck, and the lower ring hole of capsule is clamped between middle chuck and lower chuck, and top board is placed on chuck, clamping disk, spacer shell and top board are fixed together, and the piston rod of clamping oil cylinder is fixedly connected with top board and with top board through spacer shell, and described capsule cylinder upper end is fixed on lower hot plate, and lower hot plate is fixed on support.
Described lower chuck periphery is fixedly connected with wear ring.
On the inner ring of described spacer shell, between plane and the piston rod shaft shoulder of clamping oil cylinder, be fixedly connected with adjusting washer (disk).
Between the inner ring of described middle chuck and spacer shell, be provided with seal.
Described model comprises die sleeve, external mold, core, upper side form and lower side form, and core is fixed in external mold all upper, and external mold and die sleeve are cone match.
Described cope down device comprises mount pad, arm and catching tire dish, and mount pad is fixed on stress frame, and arm one end and mount pad are rotationally connected, and the other end is connected with catching tire dish by pulley.
Described catching tire dish comprises upper plate, otic placode, catching tire cylinder and is positioned at the first tire catching claw and second tire catching claw of catching tire cylinder top, otic placode is fixed on upper plate center, the first tire catching claw and second tire catching claw of upper plate and below are slidably connected, catching tire cylinder one end is connected with the first tire catching claw by the piston rod of catching tire cylinder, and the other end is connected with the second tire catching claw by mount pad.
The course of work is as follows:
Under die opening state, hang in and treat retreads, then the piston rod of folding mould oil cylinder stretches out, drive die sleeve, external mold, core, upper side form declines together, external mold and core move along the inner conical surface of die sleeve, its diameter draws in simultaneously, until core and upper side form, lower side form closes up completely, the piston rod of the clamping oil cylinder of center clamping device stretches out, chuck in drive, middle chuck, lower chuck rises and drives capsule to rise, when rising, through passing in and out interior pressure pipe, in capsule, be filled with low pressure gas, make capsule by injection tire, subsequently low pressure gas is switched to and fill pressure (gas or liquid) in sulfuration, by the sulfuration process access heating source designing, carry out the sulfuration of tire.
After tyre vulcanization finishes, in draining, compress into row die sinking.Die sinking action is contrary with above-mentioned matched moulds process, drain after interior pressure, the work of clamping oil cylinder, drive clamping disk declines, capsule exits tire, under the effect of folding mould oil cylinder, the piston rod of folding mould oil cylinder rises and drives die sleeve, external mold, core, upper side form rises together, simultaneously, deadweight due to external mold and core, inner conical surface along die sleeve when external mold and core rise in the axial direction moves downward, its diameter is radial dilatation simultaneously, tire has just been stayed on time side form, after external mold and core rising put in place, cope down device is proceeded to lower side form top, catching tire dish declines, by controlling the piston rod of catching tire cylinder, make the first tire catching claw and the second tire catching claw strut and hook tire, piston rod is retracted and is driven catching tire dish to rise, just can take out tire.
The beneficial effects of the utility model are mainly manifested in the following aspects:
One, between support and model, arrange and comprise clamping disk, capsule, capsule cylinder, pressure pipe in turnover, clamping oil cylinder, top board and the center clamping device that is positioned at the spacer shell of top board below, piston rod by folding mould oil cylinder stretches out band movable model and declines, piston rod in the clamping oil cylinder of center clamping device stretches out and drives clamping disk to rise, thereby drive capsule to rise, through passing in and out interior pressure pipe, in capsule, be filled with low pressure gas simultaneously, capsule is loaded in tire inner wall, capsule is under inner pressure medium effect, to each portion of inner layer of tire, contact pressurization better simultaneously, pressurising is more even, thereby improve tyre evenness and the balance vulcanizing.
Two, lower chuck periphery is fixedly connected with wear ring, can intercept capsule cylinder and directly contact with lower chuck periphery, thereby effectively avoid pulling and damaging capsule because of capsule cylinder, extends the service life of capsule.
Three, on the inner ring of spacer shell, between plane and the piston rod shaft shoulder of clamping oil cylinder, be fixedly connected with adjusting washer (disk), can effectively guarantee to clamp piston rod and the clamping disk accurate assembly of oil cylinder, thereby improve the job stability of whole device.
Four, between the inner ring of middle chuck and spacer shell, be provided with seal, can guarantee that capsule can not leak when filling interior pressure, to improve the quality of final retreading vulcanizing tire.
Five, model comprises die sleeve, external mold, core, upper side form and lower side form; core is fixed on external mold on interior week; external mold and die sleeve are cone match; when die sleeve rises, core can synchronously be expanded and die sinking along its conical surface, and is hung in die sleeve; and die sleeve is when decline; core can synchronously shrink and matched moulds along its conical surface, has simplified the structure of equipment, has reduced production cost and maintenance cost.
Six, cope down device comprises mount pad, arm and catching tire dish, mount pad is fixed on stress frame, arm one end and mount pad are rotationally connected, the other end is connected with catching tire dish by pulley, the first tire catching claw and second tire catching claw of the upper plate of catching tire dish and below are slidably connected, catching tire cylinder one end is connected with the first tire catching claw by the piston rod of catching tire cylinder, the other end is connected with the second tire catching claw by mount pad, adopt such structure, by controlling the piston rod of catching tire cylinder, make the first tire catching claw and the second tire catching claw strut and hook tire, piston rod is retracted and is driven catching tire dish to rise, just can take out tire, not only easy to operate, and greatly improved the efficiency that captures tire.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is structural representation of the present utility model
Fig. 2 is the structural representation of the utility model embodiment center clamping device
Fig. 3 is the catching tire dish structural representation of the utility model embodiment cope down device
Mark in figure: 1, upper hot plate, 2, lower hot plate, 3, folding mould oil cylinder, 4, gland, 5, entablature, 6, support, 7, wallboard, 8, capsule, 9, capsule cylinder, 10, pressure pipe in turnover, 11, clamping oil cylinder, 12, top board, 13, spacer shell, 14, upper chuck, 15, middle chuck, 16, lower chuck, 17, wear ring, 18, adjusting washer (disk), 19, seal, 20, die sleeve, 21, external mold, 22, core, 23, upper side form, 24, lower side form, 25, mount pad, 26, arm, 27, upper plate, 28, otic placode, 29, catching tire cylinder, 30, the first tire catching claw, 31, the second tire catching claw.
The specific embodiment
Embodiment 1
A tire vulcanizers with segmented mold, comprises hot plate 1, lower hot plate 2, folding mould oil cylinder 3, gland 4, model, cope down device and stress frame, described stress frame is by entablature 5, support 6, wallboard 7 forms, and gland 4 is suspended on entablature 5 by the piston rod of folding mould oil cylinder 3, and cope down device one end is fixed on stress frame, also comprises the center clamping device being arranged between support 6 and model, and described center clamping device comprises clamping disk, capsule 8, capsule cylinder 9, pressure pipe 10 in turnover, clamping oil cylinder 11, top board 12 and the spacer shell 13 that is positioned at top board 12 belows, described clamping disk is by the upper chuck 14 linking together, middle chuck 15 and lower chuck 16 form, and the upper ring hole of described capsule 8 is clamped between upper chuck 14 and middle chuck 15, and the lower ring hole of capsule 8 is clamped between middle chuck 15 and lower chuck 16, and top board 12 is placed on chuck 14, clamping disk, spacer shell 13 and top board 12 are fixed together, and the piston rod of clamping oil cylinder 11 is fixedly connected with top board 12 and with top board 12 through spacer shell 13, and described capsule cylinder 9 upper ends are fixed on lower hot plate 2, and lower hot plate 2 is fixed on support 6.
The present embodiment is the most basic embodiment, piston rod by folding mould oil cylinder 3 stretches out band movable model and declines, piston rod in the clamping oil cylinder 11 of center clamping device stretches out and drives clamping disk to rise, thereby drive capsule 8 to rise, through passing in and out interior pressure pipe 10, in capsule 8, be filled with low pressure gas simultaneously, capsule 8 is loaded in tire inner wall, capsule 8 is under inner pressure medium effect, to each portion of inner layer of tire, contact pressurization better simultaneously, pressurising is more even, thereby improves tyre evenness and the balance of vulcanizing.
A tire vulcanizers with segmented mold, comprises hot plate 1, lower hot plate 2, folding mould oil cylinder 3, gland 4, model, cope down device and stress frame, described stress frame is by entablature 5, support 6, wallboard 7 forms, and gland 4 is suspended on entablature 5 by the piston rod of folding mould oil cylinder 3, and cope down device one end is fixed on stress frame, also comprises the center clamping device being arranged between support 6 and model, and described center clamping device comprises clamping disk, capsule 8, capsule cylinder 9, pressure pipe 10 in turnover, clamping oil cylinder 11, top board 12 and the spacer shell 13 that is positioned at top board 12 belows, described clamping disk is by the upper chuck 14 linking together, middle chuck 15 and lower chuck 16 form, and the upper ring hole of described capsule 8 is clamped between upper chuck 14 and middle chuck 15, and the lower ring hole of capsule 8 is clamped between middle chuck 15 and lower chuck 16, and top board 12 is placed on chuck 14, clamping disk, spacer shell 13 and top board 12 are fixed together, and the piston rod of clamping oil cylinder 11 is fixedly connected with top board 12 and with top board 12 through spacer shell 13, and described capsule cylinder 9 upper ends are fixed on lower hot plate 2, and lower hot plate 2 is fixed on support 6.
Described lower chuck 16 peripheries are fixedly connected with wear ring 17.
On the inner ring of described spacer shell 13, between plane and the piston rod shaft shoulder of clamping oil cylinder 11, be fixedly connected with adjusting washer (disk) 18.
Between the inner ring of described middle chuck 15 and spacer shell 13, be provided with seal 19.
The present embodiment is better embodiment, and lower chuck 16 peripheries are fixedly connected with wear ring 17, can intercept capsule cylinder 9 and directly contact with lower chuck 16 peripheries, thereby effectively avoid pulling and damaging capsule 8 because of capsule cylinder 9, extends the service life of capsule 8.Adjusting washer (disk) 18 can effectively guarantee to clamp piston rod and the clamping disk accurate assembly of oil cylinder 11, thereby improves the job stability of whole device.Between the inner ring of middle chuck 15 and spacer shell 13, be provided with seal 19, can guarantee that capsule 8 can not leak when filling interior pressure, to improve the quality of final retreading vulcanizing tire.
Embodiment 3
A tire vulcanizers with segmented mold, comprises hot plate 1, lower hot plate 2, folding mould oil cylinder 3, gland 4, model, cope down device and stress frame, described stress frame is by entablature 5, support 6, wallboard 7 forms, and gland 4 is suspended on entablature 5 by the piston rod of folding mould oil cylinder 3, and cope down device one end is fixed on stress frame, also comprises the center clamping device being arranged between support 6 and model, and described center clamping device comprises clamping disk, capsule 8, capsule cylinder 9, pressure pipe 10 in turnover, clamping oil cylinder 11, top board 12 and the spacer shell 13 that is positioned at top board 12 belows, described clamping disk is by the upper chuck 14 linking together, middle chuck 15 and lower chuck 16 form, and the upper ring hole of described capsule 8 is clamped between upper chuck 14 and middle chuck 15, and the lower ring hole of capsule 8 is clamped between middle chuck 15 and lower chuck 16, and top board 12 is placed on chuck 14, clamping disk, spacer shell 13 and top board 12 are fixed together, and the piston rod of clamping oil cylinder 11 is fixedly connected with top board 12 and with top board 12 through spacer shell 13, and described capsule cylinder 9 upper ends are fixed on lower hot plate 2, and lower hot plate 2 is fixed on support 6.Described lower chuck 16 peripheries are fixedly connected with wear ring 17.On the inner ring of described spacer shell 13, between plane and the piston rod shaft shoulder of clamping oil cylinder 11, be fixedly connected with adjusting washer (disk) 18.Between the inner ring of described middle chuck 15 and spacer shell 13, be provided with seal 19.
Described model comprises die sleeve 20, external mold 21, core 22, upper side form 23 and lower side form 24, and it is upper that core 22 is fixed on interior week of external mold 21, and external mold 21 is cone match with die sleeve 20.
Described cope down device comprises mount pad 25, arm 26 and catching tire dish, and mount pad 25 is fixed on stress frame, and arm 26 one end and mount pad 25 are rotationally connected, and the other end is connected with catching tire dish by pulley.Described catching tire dish comprises upper plate 27, otic placode 28, catching tire cylinder 29 and is positioned at the first tire catching claw 30 and second tire catching claw 31 of catching tire cylinder 29 tops, otic placode 28 is fixed on upper plate 27 centers, upper plate 27 is slidably connected with the first tire catching claw 30 and second tire catching claw 31 of below, catching tire cylinder 29 one end are connected with the first tire catching claw 30 by the piston rod of catching tire cylinder 29, and the other end is connected with the second tire catching claw 31 by mount pad 25.
The present embodiment is preferred forms, adopts the model of this spline structure, has simplified the structure of equipment, has reduced production cost and maintenance cost; Adopt the cope down device of this spline structure, by controlling the piston rod of catching tire cylinder 29, make the first tire catching claw 30 and the second tire catching claw 31 strut and hook tire, piston rod is retracted and is driven catching tire dish to rise, and just can take out tire, not only easy to operate, and greatly improved the efficiency that captures tire.
The utility model is not limited to above-described embodiment, and according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes to the utility model, but within these changes all should fall into the protection domain of the utility model claim.
Claims (7)
1. a tire vulcanizers with segmented mold, comprises hot plate (1), lower hot plate (2), folding mould oil cylinder (3), gland (4), model, cope down device and stress frame, described stress frame is by entablature (5), support (6), wallboard (7) forms, gland (4) is suspended on entablature (5) by the piston rod of folding mould oil cylinder (3), cope down device one end is fixed on stress frame, it is characterized in that: also comprise the center clamping device being arranged between support (6) and model, described center clamping device comprises clamping disk, capsule (8), capsule cylinder (9), pressure pipe (10) in turnover, clamping oil cylinder (11), top board (12) and be positioned at the spacer shell (13) of top board (12) below, described clamping disk is by the upper chuck (14) linking together, middle chuck (15) and lower chuck (16) form, the upper ring hole of described capsule (8) is clamped between upper chuck (14) and middle chuck (15), the lower ring hole of capsule (8) is clamped between middle chuck (15) and lower chuck (16), it is upper that top board (12) is placed in chuck (14), clamping disk, spacer shell (13) and top board (12) are fixed together, the piston rod of clamping oil cylinder (11) is fixedly connected with top board (12) and with top board (12) through spacer shell (13), it is upper that described capsule cylinder (9) upper end is fixed on lower hot plate (2), and lower hot plate (2) is fixed on support (6).
2. a kind of tire vulcanizers with segmented mold according to claim 1, is characterized in that: described lower chuck (16) periphery is fixedly connected with wear ring (17).
3. according to a kind of tire vulcanizers with segmented mold described in claim 1 or 2, it is characterized in that: on the inner ring of described spacer shell (13), between plane and the piston rod shaft shoulder of clamping oil cylinder (11), be fixedly connected with adjusting washer (disk) (18).
4. a kind of tire vulcanizers with segmented mold according to claim 3, is characterized in that: between the inner ring of described middle chuck (15) and spacer shell (13), be provided with seal (19).
5. a kind of tire vulcanizers with segmented mold according to claim 1, it is characterized in that: described model comprises die sleeve (20), external mold (21), core (22), upper side form (23) and lower side form (24), core (22) is fixed in external mold (21) all upper, and external mold (21) is cone match with die sleeve (20).
6. a kind of tire vulcanizers with segmented mold according to claim 1, it is characterized in that: described cope down device comprises mount pad (25), arm (26) and catching tire dish, mount pad (25) is fixed on stress frame, arm (26) one end and mount pad (25) are rotationally connected, and the other end is connected with catching tire dish by pulley.
7. a kind of tire vulcanizers with segmented mold according to claim 6, it is characterized in that: described catching tire dish comprises upper plate (27), otic placode (28), catching tire cylinder (29) and be positioned at the first tire catching claw (30) and second tire catching claw (31) of catching tire cylinder (29) top, otic placode (28) is fixed on upper plate (27) center, upper plate (27) is slidably connected with the first tire catching claw (30) and second tire catching claw (31) of below, catching tire cylinder (29) one end is connected with the first tire catching claw (30) by the piston rod of catching tire cylinder (29), the other end is connected with the second tire catching claw (31) by mount pad (25).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667212.6U CN203527725U (en) | 2013-10-28 | 2013-10-28 | Tire segmented mold vulcanizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320667212.6U CN203527725U (en) | 2013-10-28 | 2013-10-28 | Tire segmented mold vulcanizer |
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| CN203527725U true CN203527725U (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383013A (en) * | 2018-12-14 | 2019-02-26 | 百耐特(新兴)新材料科技有限公司 | Segmented mold tire rubber tread manufacturing device |
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2013
- 2013-10-28 CN CN201320667212.6U patent/CN203527725U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109383013A (en) * | 2018-12-14 | 2019-02-26 | 百耐特(新兴)新材料科技有限公司 | Segmented mold tire rubber tread manufacturing device |
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Granted publication date: 20140409 Termination date: 20171028 |