CN104309029A - Tire vertical compression die with limit function - Google Patents
Tire vertical compression die with limit function Download PDFInfo
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- CN104309029A CN104309029A CN201410665210.2A CN201410665210A CN104309029A CN 104309029 A CN104309029 A CN 104309029A CN 201410665210 A CN201410665210 A CN 201410665210A CN 104309029 A CN104309029 A CN 104309029A
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- watt
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Abstract
The invention relates to a tire vertical compression die with the limit function and belongs to the field of tire production equipment. The tire vertical compression die with the limit function comprises an outer die body, an inner die body, an inner die expansion limit end ring, an inner die contraction limit block and a drum tile limit mechanism. The inner die expansion limit end ring and the inner die contraction limit block which are installed in the inner die body ensure high precision of inner die actions, and the problem that as the precision of inner die actions does not meet requirements, tires are detached with difficulty is effectively solved; the drum tile limit mechanism is installed on the outer die body and matched with the inner die body, the problem that as a metal inner die retracts under high vulcanization pressure in an existing metal inner die vertical compression vulcanization process, the inner surfaces of finished tires are uneven is fundamentally solved, and evenness and dynamic balance of finished tires are improved effectively; meanwhile, an upper limit ring and a lower limit ring effectively share vulcanization pressure of a drum tile transmission component, so that the service life of the transmission component and a transmission system is prolonged.
Description
Technical field
The present invention relates to field of tire production equipment, particularly a kind of mould of tire vertical compression vulcanizer.
Background technology
As everyone knows, there are some inevitable defects in bladder curing, and outside removing capsule problem in the fabrication process, capsule belongs to flexible body, sizing material cannot be forced under the state of melting to realize again being uniformly distributed of quality by sulfurization.The inner mold that patent CN203267003U mentions a kind of tire vertical compression vulcanizer substitutes the curing bag of central mechanism of vulcanizing machine, and by hydraulic oil cylinder driving piston rod, piston rod drivening rod, link transmission completes the expanding-contracting action of drum watt.When vulcanizer is in die-closed position, drum watt is strutted completely, and its external diameter equals finished tire Internal periphery diameter, has coordinated sulfuration with outer mold.Compared with traditional capsule shaping sulfuration, metal die vertical compression first cure effectively improves uniformity and the dynamic balance of tire, but jointed gear unit reliability under high-sulfurized pressure is poor.Therefore, mention a kind of guide tracked tire vertical compression sulfurizing mould in patent CN203542913U and substitute link-type central authority vulcanizer mold, the radial displacement axial displacement of piston rod being transformed to drum watt by slant rail slide block mechanism completes the expanding-contracting action of drum watt, linkage than before, the transmission of guide rail slide block transmission mechanism has stability.But still there is certain defect in existing vertical compression sulfuration process, rail slide type central authority does not have action spacing in drum watt breathing motion process, only the simple Bit andits control relying on hydraulic jack, is difficult to reach required precision, and drum watt breathing not in place causing unloads the problems such as tire difficulty.In addition, there is certain flexibility in hydraulic jack locked mode, and drum watt drive disk assembly can produce retraction under High Pressure, causes tire inner surface uneven, affects tire dynamic and balance and uniformity.
Summary of the invention
In order to overcome the defect that prior art exists, the invention provides a kind of tire vertical compression mould with limit function, can realize carrying out spacing to internal mold distending and contractive action, ensure the required precision of internal mold action.In addition, carry out spacing to drum watt before sulfuration, complete the rigidity locked mode action to bulging watt of distending, ensure that a drum watt external diameter is equal to finished tire internal diameter in sulfidation, improve dynamic balance and the uniformity of finished tire, and effectively share the sulfide stress of drum watt drive disk assembly, improve the life-span of drive disk assembly.
The technical scheme that the present invention solves the employing of its technical problem is: the invention provides a kind of tire vertical compression mould with limit function, comprises outer mold, inner mold, the spacing end ring of internal mold distending, internal mold contraction limited block and drum watt position-limit mechanism.Wherein, outer mold comprises upper plate, epipleural, upper steel ring, middle die sleeve, arc seat, slide block, pattern block, lower steel ring, lower side panel, lower plate.Inner mold comprises attachment screw, clamp ring, wedge, piston rod, wide watt of support, wide watt, narrow watt support, narrow watt, base plate position-arresting disk.Upper steel ring and epipleural, epipleural and upper plate are connected by screw; Upper plate has the T-shaped guide-track groove with slide block equivalent amount, and slide block is arranged on T-shaped guide-track groove, and is connected by screw with arc seat; Arc seat and pattern block are connected, and are connected by slant rail slide block mechanism with middle die sleeve, to meet in the process of middle die sleeve rising, pull arc seat to expand outwardly.Lower plate and lower side panel, lower side panel and lower steel ring are connected by screw.Wide watt is connected by screw with wide watt of support, wide watt of support coordinates transmission by guide rail slide block mechanism respectively at base plate position-arresting disk and wedge, narrow watt is connected by screw with narrow watt of support, narrow watt of support coordinates transmission by guide rail slide block mechanism respectively at base plate position-arresting disk and wedge, wedge is linked together by connecting bolt, clamp ring and piston rod, wedge rises with piston rod, moves down, wide watt and narrow watt of radial contraction under the cooperation of guide rail slide block mechanism, distending.The spacing end ring of internal mold distending is fixed by screws in the bottom of base plate position-arresting disk.Be fixed with the internal mold identical with narrow wattage amount at narrow watt near piston rod side and shrink limited block, internal mold shrinks limited block to be had and the arc surface of piston rod with diameter.
Drum watt position-limit mechanism is made up of upper end position-limit mechanism and lower end position-limit mechanism.Upper end position-limit mechanism comprises upper limit ring, upper cylinder, upper piston rod; Lower end position-limit mechanism comprises lower limit ring, lower oil cylinder, lower piston rod.Upper limit ring with lower limit ring all has the slotting key identical with narrow wattage amount, insert key top lateral surface and there is the conical surface at an angle with narrow watt of edges co-operate, in the hole slot that slotting key mapping is offered in outer mold, the slotting key that upper plate, epipleural are upper limit ring provides guide effect; The slotting key that lower plate and lower side panel are lower limit ring provides guide effect.Lower limiting mechanism is identical with upper limit mechanism structure, up and down corresponding configuration.Upper limit ring, lower limit ring are connected with upper piston rod, lower piston rod respectively, and are driven respectively by upper cylinder, lower oil cylinder.Upper cylinder and lower oil cylinder also can be cylinders.
The invention has the beneficial effects as follows: carry out spacing to internal mold distending and contractive action, ensure the required precision of internal mold action, effectively solve because of internal mold operation precision do not reach require to cause unload the problems such as tire difficulty; Extension type spacing ring is adopted to play rigid limit effect to telescopic metal inner mould, fundamentally can solve metal inner mould in existing metal inner mould vertical compression sulfuration process to bounce back under high-sulfurized pressure, the problems such as the finished tire inner surface caused is uneven, effectively improve uniformity and the dynamic balance of finished tire; Another spacing ring shares the sulfide stress of drum watt drive disk assembly effectively, increases the life-span of drive disk assembly and transmission system.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the schematic diagram of tyre vulcanization internal mold matched moulds duty of the present invention
Fig. 2 is the schematic diagram of tyre vulcanization internal mold die sinking duty of the present invention
Fig. 3 is that tyre vulcanized mould of the present invention is inserted key spacing ring and inserted key position figure
1. upper plate, 2 upper limit ring, 3. epipleurals, 4. go up steel ring, die sleeve 5., 6. arc seat, 7. pattern block, 8. lower plate, 9. lower side panel, 10. lower steel ring, 11. fetuses, 12. slide blocks, 13. clamp rings, 14. end caps, 15. wedges, 16. narrow watts, 17. narrow watts of supports, 18. internal molds shrink limited block, 19. insert key, 20. lower limit rings, 21. piston rods, 22. times oil cylinders, 23. lower piston rods, 24. base plate position-arresting disks, 25. wide watts of supports, 26. wide watts, the spacing end ring of 27. internal mold distending, 28. connecting bolts, 29. upper piston rods, 30. upper cylinders.
Detailed description of the invention
See in Fig. 1, Fig. 2, Fig. 3, a kind of tire vertical compression mould with limit function of the present invention comprises outer mold, inner mold, the spacing end ring 27 of internal mold distending, internal mold contraction limited block 18 and drum watt position-limit mechanism.Wherein, outer mold comprises upper plate 1, epipleural 3, upper steel ring 4, middle die sleeve 5, arc seat 6, slide block 12, pattern block 7, lower steel ring 10, lower side panel 9, lower plate 8.Inner mold comprises connecting bolt 28, clamp ring 13, wedge 15, piston rod 21, wide watt of support 25, wide watt 26, narrow watt support 17, narrow watt 16, base plate position-arresting disk 24.Upper steel ring 4 and epipleural 3, epipleural 3 and upper plate 1 are connected by screw; Upper plate 1 has the T-shaped guide-track groove with slide block 12 equivalent amount, and slide block 12 is arranged on T-shaped guide-track groove, and is connected by screw with arc seat 6; Arc seat 6 is connected with pattern block 7, is connected by slant rail slide block mechanism with middle die sleeve 5, to meet in the process of middle die sleeve rising, pulls arc seat 6 to expand outwardly.Lower plate 8 and lower side panel 9, lower side panel 9 and lower steel ring 10 are connected by screw; Under matched moulds state, upper steel ring 4, lower steel ring 10 and pattern block 7 form complete finished tire outline.Be connected by screw with wide watt of support 25 for wide watt 26, wide watt of support 25 coordinates transmission by guide rail slide block mechanism respectively at base plate position-arresting disk 24 and wedge 15, be connected by screw with narrow watt of support 17 for narrow watt 16, narrow watt of support 17 coordinates transmission by guide rail slide block mechanism respectively at base plate position-arresting disk 24 and wedge 15, wedge 15 is linked together by connecting bolt 28, clamp ring 13, end cap 14 and piston rod 21, wedge 15 rises with piston rod 21, moves down, wide watt 26 and narrow watt 16 radial contraction under the cooperation of guide rail slide block mechanism, distending.The spacing end ring 27 of internal mold distending is fixed by screws in the bottom of base plate position-arresting disk 24.In internal mold distending process, base plate position-arresting disk 24 keeps motionless, and wedge 15 moves down with piston rod, wide watt 26 and narrow watt of 16 radial distendings, and to internal mold distending spacing end ring 27 bottom surface contact base plate position-arresting disk 24, internal mold distending puts in place.To be fixed with the internal mold identical with narrow watt of 16 quantity near piston rod 21 side at narrow watt 16 and to shrink limited block 18, internal mold shrinks limited block 18 to be had and the arc surface of piston rod 21 with diameter.In internal mold contraction process, wedge 15 rises with piston rod 21, wide watt 26 and narrow watt of 16 radial contraction, and the arc surface shrinking limited block 27 to internal mold holds piston rod 21 completely tightly, and internal mold shrinks and puts in place.The spacing end ring 27 of internal mold distending internal mold distending and internal mold shrink the integrality that limited block 18 ensure that internal mold drum watt movement locus.
Drum watt position-limit mechanism is made up of upper end position-limit mechanism and lower end position-limit mechanism.Upper end position-limit mechanism comprises upper limit ring 2, upper cylinder 30, upper piston rod 29; Lower end position-limit mechanism comprises lower limit ring 20, lower oil cylinder 22, lower piston rod 23.Upper limit ring 2 with lower limit ring 20 all has the slotting key 19 identical with narrow watt of 16 quantity, insert key 19 top lateral surface and there is the conical surface at an angle with narrow watt of 16 edges co-operate, slotting key 19 is arranged in the hole slot that outer mold is offered, and the slotting key 19 that upper plate 1, epipleural 3 are upper limit ring 2 provides guide effect; The slotting key 19 that lower plate 8 and lower side panel 9 are lower limit ring 20 provides guide effect.Lower limiting mechanism is identical with upper limit mechanism structure, up and down corresponding configuration.Upper limit ring 2, lower limit ring 20 are connected with upper piston rod 29, lower piston rod 23 respectively, and are driven respectively by upper cylinder 30, lower oil cylinder 22.Upper cylinder 30 and lower oil cylinder 22 also can be cylinders.
After mould assembling action completes, upper limit ring 2 and lower limit ring 20 decline respectively and rise under acting on while upper cylinder 30 and lower oil cylinder 22, inserting key 19 is formed protruding at the upper steel ring 4 of outer mold and lower steel ring 10 surface, plug in the conical surface outside key 19 top to contact with a drum watt edge surface, after reaching specified pressure to upper cylinder 30, lower oil cylinder 22, action stops.The working depth of inserting key 19 top is greater than drum watt wall thickness.Now, upper limit ring 2 and lower limit ring 20 complete the rigidity locked mode action to bulging watt, ensure that the external diameter of bulging watt is equal to finished tire internal diameter.The sulfide stress that in internal mold, narrow watt 16 is born is large, and rebound phenomenon mainly occurs on narrow watt 16.Therefore slotting key 19 position of upper limit ring 2 and lower limit ring 20 is arranged on narrow watt of inner side by the present invention.
Internal mold shrinks limited block 18 and ensures that internal mold contractive action puts in place, makes to unload tire operation and carries out smoothly.The spacing end ring 27 of internal mold distending ensures that the action of internal mold distending puts in place, prevents because cylinder action precision makes transmission mechanism bear excessive pressure not.Bulging watt position-limit mechanism completes the rigidity locked mode action to bulging watt after the action of internal mold distending, prevents in sulfidation, and drum watt produces a radial contraction under high-sulfurized pressure.Wherein, the spacing end ring 27 of internal mold distending, internal mold shrinks limited block 18 and the drum upper limit ring 2 of watt position-limit mechanism, lower limit ring 20 are made by sheet metal material.
Adopt the tire curing concrete steps of the present invention:
1) tire is filled: internal mold shrinks limited block 18 and holds piston rod 21 tightly, and internal mold is in contraction state, will treat that sulfuration fetus 11 is placed on sulfuration board.
2) shape: base plate position-arresting disk 24 keeps motionless, wedge 15 declines with piston rod 21, and to internal mold distending spacing end ring 27 bottom surface contact base plate position-arresting disk 24, now internal mold is in distending state, central authority entirety moves down subsequently, is placed on lower steel ring 10 by internal mold together with fetus 11.
3) matched moulds: as shown in Figure 1, drum watt is in distending state, now upper limit ring 2, lower limit ring 20 move down respectively, on move to operating position, complete the rigid limit of drum watt, prevent drum watt surface between curing time stressed excessive and cause drum watt retraction.
4) unload tire: as Fig. 2, external mold rises to assigned address, and central authority rises overally, and internal mold is contracted to internal mold contraction limited block 18 and holds piston rod 21 tightly, and internal mold is in contraction state, takes out the tire vulcanizated.
Claims (1)
1. one kind has the tire vertical compression mould of limit function, comprise outer mold, inner mold, the spacing end ring of internal mold distending, internal mold contraction limited block and drum watt position-limit mechanism, it is characterized in that: the spacing end ring of internal mold distending is fixed by screws in the bottom of base plate position-arresting disk, be fixed with the internal mold identical with narrow wattage amount at narrow watt near piston rod side and shrink limited block, internal mold shrinks limited block to be had and the arc surface of piston rod with diameter; Drum watt position-limit mechanism is made up of upper end position-limit mechanism and lower end position-limit mechanism; Upper end position-limit mechanism comprises upper limit ring, upper cylinder, upper piston rod, and lower end position-limit mechanism comprises lower limit ring, lower oil cylinder, lower piston rod; Upper limit ring with lower limit ring all has the slotting key identical with narrow wattage amount, insert key top lateral surface and there is the conical surface at an angle with narrow watt of edges co-operate, in the hole slot that slotting key mapping is offered in outer mold, lower limiting mechanism is identical with upper limit mechanism structure, up and down corresponding configuration; Upper limit ring, lower limit ring are connected with upper piston rod, lower piston rod respectively, and are driven respectively by upper cylinder, lower oil cylinder; Upper cylinder and lower oil cylinder also can be cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665210.2A CN104309029B (en) | 2014-11-20 | 2014-11-20 | There is the tire vertical compression mould of limit function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665210.2A CN104309029B (en) | 2014-11-20 | 2014-11-20 | There is the tire vertical compression mould of limit function |
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| Publication Number | Publication Date |
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| CN104309029A true CN104309029A (en) | 2015-01-28 |
| CN104309029B CN104309029B (en) | 2015-12-30 |
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| CN201410665210.2A Active CN104309029B (en) | 2014-11-20 | 2014-11-20 | There is the tire vertical compression mould of limit function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643965A (en) * | 2016-04-14 | 2016-06-08 | 三角轮胎股份有限公司 | Tire vulcanizing machine for stereotyping metal inner die |
| CN109383056A (en) * | 2018-11-22 | 2019-02-26 | 三角（威海）华盛轮胎有限公司 | Asynchronous breathing tire vertical compression vulcanizes interior mold |
| CN109940802A (en) * | 2017-12-21 | 2019-06-28 | 住友橡胶工业株式会社 | Tire curing unit |
| CN115609986A (en) * | 2022-11-10 | 2023-01-17 | 北京化工大学 | Novel stepped tire direct-pressure vulcanization inner mold |
| CN116604867A (en) * | 2023-07-20 | 2023-08-18 | 山东豪迈机械科技股份有限公司 | Tire curing apparatus and method of using the same |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2728742Y (en) * | 2004-06-28 | 2005-09-28 | 揭阳市天阳模具有限公司 | Adjustable mould for tyre of engineering truck |
| CN201143771Y (en) * | 2007-12-19 | 2008-11-05 | 中国化学工业桂林工程公司 | Tyre building machine assembly drum |
| CN201205744Y (en) * | 2008-04-07 | 2009-03-11 | 山东豪迈机械科技股份有限公司 | Giant tyres active die |
| CN102173068A (en) * | 2011-03-01 | 2011-09-07 | 广东巨轮模具股份有限公司 | Engineering truck radial tyre flat open active die and method for producing tyres by same |
| CN102615748A (en) * | 2012-03-29 | 2012-08-01 | 广东巨轮模具股份有限公司 | Mechanical shaping method for automobile tire vulcanization molding |
| CN202491350U (en) * | 2012-03-29 | 2012-10-17 | 广东巨轮模具股份有限公司 | Mechanical shaping device for sulfide forming of automobile tire |
| CN103552175A (en) * | 2013-11-18 | 2014-02-05 | 三角（威海）华盛轮胎有限公司 | Tire vulcanization inner mould |
| CN203542913U (en) * | 2013-11-18 | 2014-04-16 | 三角（威海）华盛轮胎有限公司 | Inner mold for vulcanizing tyre |
| CN204149374U (en) * | 2014-11-20 | 2015-02-11 | 三角轮胎股份有限公司 | There is the tire vertical compression mould of limit function |
-
2014
- 2014-11-20 CN CN201410665210.2A patent/CN104309029B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2728742Y (en) * | 2004-06-28 | 2005-09-28 | 揭阳市天阳模具有限公司 | Adjustable mould for tyre of engineering truck |
| CN201143771Y (en) * | 2007-12-19 | 2008-11-05 | 中国化学工业桂林工程公司 | Tyre building machine assembly drum |
| CN201205744Y (en) * | 2008-04-07 | 2009-03-11 | 山东豪迈机械科技股份有限公司 | Giant tyres active die |
| CN102173068A (en) * | 2011-03-01 | 2011-09-07 | 广东巨轮模具股份有限公司 | Engineering truck radial tyre flat open active die and method for producing tyres by same |
| CN102615748A (en) * | 2012-03-29 | 2012-08-01 | 广东巨轮模具股份有限公司 | Mechanical shaping method for automobile tire vulcanization molding |
| CN202491350U (en) * | 2012-03-29 | 2012-10-17 | 广东巨轮模具股份有限公司 | Mechanical shaping device for sulfide forming of automobile tire |
| CN103552175A (en) * | 2013-11-18 | 2014-02-05 | 三角（威海）华盛轮胎有限公司 | Tire vulcanization inner mould |
| CN203542913U (en) * | 2013-11-18 | 2014-04-16 | 三角（威海）华盛轮胎有限公司 | Inner mold for vulcanizing tyre |
| CN204149374U (en) * | 2014-11-20 | 2015-02-11 | 三角轮胎股份有限公司 | There is the tire vertical compression mould of limit function |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643965A (en) * | 2016-04-14 | 2016-06-08 | 三角轮胎股份有限公司 | Tire vulcanizing machine for stereotyping metal inner die |
| CN109940802A (en) * | 2017-12-21 | 2019-06-28 | 住友橡胶工业株式会社 | Tire curing unit |
| CN109383056A (en) * | 2018-11-22 | 2019-02-26 | 三角（威海）华盛轮胎有限公司 | Asynchronous breathing tire vertical compression vulcanizes interior mold |
| CN109383056B (en) * | 2018-11-22 | 2024-01-09 | 三角（威海）华盛轮胎有限公司 | Direct-pressure vulcanizing inner die for asynchronous expansion and shrinkage tire |
| CN115609986A (en) * | 2022-11-10 | 2023-01-17 | 北京化工大学 | Novel stepped tire direct-pressure vulcanization inner mold |
| CN116604867A (en) * | 2023-07-20 | 2023-08-18 | 山东豪迈机械科技股份有限公司 | Tire curing apparatus and method of using the same |
| CN116604867B (en) * | 2023-07-20 | 2023-09-22 | 山东豪迈机械科技股份有限公司 | Tire curing apparatus and method of using the same |
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