Summary of the invention
Problem to be solved by this invention is, overcomes existing tire-mold when the folding mould pumps, and die quality is big, the shortcoming that whole vulcanizing equipment is huge, manufacturing cost is high.Tire-mold provided by the present invention, simple in structure, the part quality that moves up and down during the opening and closing mould is little, and vulcanizing equipment is simple, and the tire production cost is low.
The present invention is achieved in that a kind of tire-mold, comprise epipleural, middle die sleeve, lower side panel, and between upper and lower side plate, form a plurality of pattern blocks of tyre crown decorative pattern, wherein, the axis direction at mould between pattern block and the lower side panel is located by connecting, and the radial direction along mould moves back and forth pattern block synchronously on lower side panel top.
In the present invention, axis direction positioning connection at mould between pattern block and the lower side panel mainly contains following two kinds: one, in the pattern block bottom projection is set, the other end of projection places in the corresponding groove of lower side panel top, is to be slidingly matched between projection and the groove; Two, on lower side panel top projection is set, the other end of projection places in the corresponding groove of pattern block bottom, is to be slidingly matched between projection and the groove.
When the pattern block bottom was provided with projection, the section of projection was inverse-T-shaped or swallow-tail form, and perhaps other plays the shape of same function; The groove section on described lower side panel top is inverse-T-shaped or swallow-tail form accordingly, and perhaps other plays the shape of same function.In addition, also can be combined to form inverse-T-shaped section by groove and two antifriction pieces that are fixed on the groove radial edges on lower side panel top.Projection and pattern block that the pattern block bottom is provided with can be structure as a whole, also can be for being fixed on the slide block of pattern block bottom.
When lower side panel top was provided with projection, the section of projection was "T"-shaped or falls swallow-tail form, and perhaps other plays the shape of same function; The groove section of described pattern block bottom is "T"-shaped accordingly or falls swallow-tail form, and perhaps other plays the shape of same function.In addition, also can be combined to form "T"-shaped section by groove and two antifriction pieces that are fixed on the groove radial edges of pattern block bottom.Projection and lower side panel that lower side panel top is provided with can be structure as a whole, also can be for being fixed on the slide block on lower side panel top.
In the present invention, guarantee that each pattern block has three kinds on lower side panel top along the mode that radial direction is done to move back and forth synchronously: one, at the fixing driving lever of the downside of each pattern block outer surface, driving lever inner surface and middle die sleeve outer surface are slidingly matched; Two, on each pattern block outer surface inclined-plane, the gib block that cross section is "T"-shaped or swallow-tail form is set vertically, corresponding on middle die sleeve inner surface inclined-plane the groove that cross section is "T"-shaped or swallow-tail form is set; Three, at each pattern block outer surface the radial thrust oil cylinder is set.
The invention has the beneficial effects as follows, just will mention during the tire die sinking with the middle die sleeve that epipleural is fixed together, pattern block is only stayed lower side panel top and is moved radially and do not move up and down with epipleural, significantly reduced the required lifting force of die sinking, simplified the structure of mould and vulcanizing equipment, reduce the production cost of tire, improved production efficiency.This tire-mold is simple in structure, and the folding mould is quick and easy, is particularly useful for the production of large engineering vehicle tire.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 2, the 1st, middle die sleeve, the 3rd, epipleural, the 4th, slide block, the 5th, lower side panel, the 6th, the antifriction piece, the 2nd, pattern block, it forms the tyre crown decorative pattern between epipleural 3, lower side panel 5, and pattern block 2 is distributed on the same circumference, and its bottom is fixed with slide block 4.The inner surface inclined-plane relative engagement of the outer surface inclined-plane of pattern block 2 and middle die sleeve 1 is slided, on the axis direction of mould, be located by connecting between pattern block 2 and the lower side panel 5, there is not axial displacement each other, mould is in the opening and closing mold process, each pattern block can the radial direction along mould moves back and forth synchronously on lower side panel 5 tops simultaneously, do not have axial displacement between pattern block 2 and the lower side panel 5, promptly do not move up and down with middle die sleeve 1 and epipleural 3.A plurality of pattern blocks 2 close up the pattern ring that the back forms one circumferential sealing, go out the outline of tire with epipleural 3 and lower side panel 5 co-molded.
Pattern block 2 and lower side panel 5 are in the axis direction connected mode of mould as shown in Figure 3, the projection of pattern block 2 bottoms is the slide block 4 that is fixed on pattern block 2 bottoms, the section of slide block is inverse-T-shaped, the groove on lower side panel 5 tops is inverse-T-shaped groove accordingly, lower side panel 5 tops inverse-T-shaped groove combine along the hard-wired antifriction piece 6 of groove radial edges by the groove on lower side panel 5 tops and two.Inverse-T-shaped projection is slided in inverse-T-shaped groove, and pattern block 2 is moved back and forth along radial direction synchronously on lower side panel 5 tops.
The downside of pattern block 2 outer surfaces is driving lever 7 fixedly, each pattern block correspondence fix two driving levers, and the equidistant outer surface that is arranged on pattern block 2 is to be slidingly matched between driving lever 7 inner surfaces and middle die sleeve 1 outer surface; The outer surface of pattern block 2 is a taper seat, the outer surface that forms after all pattern block 2 closes up is the normal cone face, what the inner surface of middle die sleeve 1 was also corresponding is the normal cone face, so that cooperate slip with pattern block 2 outer surfaces, therefore, middle die sleeve 1 can slide between driving lever 7 and pattern block 2, and the top of middle die sleeve 1 is fixed on the epipleural 3.By this kind structure, tire-mold is in the folding mold process, and 2 grooves along lower side panel 5 tops of pattern block are done radially to move back and forth synchronously, do not move up and down with epipleural 3 and middle die sleeve 1, promptly and between the lower side panel 5 do not have axial displacement.
For between die sleeve 1 inner surface in preventing and pattern block 2 outer surfaces since relative the slip produce bigger friction and cause bonding, at the fixing antifriction plate 8 of the inner surface of middle die sleeve 1, with the friction of die sleeve 1 and pattern block 2 in the minimizing.
Above-mentioned mould in use, earlier stereotyped tire base is placed on the lower side panel 5, at this moment pattern block 2 is in radially open configuration, then the middle die sleeve under the epipleural 31 is inserted between driving lever 7 and the pattern block 2, epipleural 3 and middle die sleeve 1 descend together, the inner surface of middle die sleeve 1 and relative slip of outer surface of pattern block 2, promote pattern block 2 radially to central motion, pattern block until periphery closes up mutually, form a complete pattern ring, epipleural 3 and lower side panel 5 also form the outline of a tire with the pattern ring closure simultaneously, and under the pressure of capsule expansion, mold pressing goes out the profile of whole tire in the tire base.The motion process of die sinking is just opposite with matched moulds, epipleural 3 and middle die sleeve 1 rise together, the outer surface of middle die sleeve 1 and relative slip of inner surface of driving lever 7, promote driving lever 7 and be with radially outwards motion of pattern block 2, after rising to certain altitude, epipleural 3 and middle die sleeve 1 remove, at this moment each pattern block also radially opens, moves to the largest circumference place, and the tire that vulcanizates is stayed on the lower side panel 5, can take out from mould.
Embodiment 2
Pattern block 2 and lower side panel 5 are in the connected mode of mold axis direction as shown in Figure 4, the projection and the pattern block 2 of pattern block 2 bottoms are integrative-structure, the section of projection is inverse-T-shaped, lower side panel 5 tops inverse-T-shaped groove combine along the hard-wired antifriction piece 6 of groove radial edges by the groove on lower side panel 5 tops and two.
Other are with embodiment 1.
Embodiment 3
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in Figure 5, projection and the pattern block 2 of pattern block 2 bottoms are integrative-structure, protruding section is a swallow-tail form, the groove on lower side panel 5 tops also is dovetail groove accordingly.
Other are with embodiment 1.
Embodiment 4
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in Figure 6, the projection of pattern block 2 bottoms is the slide block 4 that is fixed on pattern block 2 bottoms, its section configuration is inverse-T-shaped, the groove on lower side panel 5 tops also is inverse-T-shaped groove accordingly.
Other are with embodiment 1.
Embodiment 5
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in Figure 7, projection and the pattern block of pattern block 2 bottoms are integrative-structure, protruding section configuration is inverse-T-shaped, the groove on lower side panel 5 tops also is inverse-T-shaped groove accordingly.
Other are with embodiment 1.
Embodiment 6
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in Figure 8, the projection of pattern block 2 bottoms is the slide block 4 that is fixed on pattern block 2 bottoms, the section configuration of slide block 4 is a swallow-tail form, the groove on lower side panel 5 tops also is dovetail groove accordingly.
Other are with embodiment 1.
Embodiment 7
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in Figure 9, projection and the lower side panel 5 on lower side panel 5 tops are integrative-structure, protruding section configuration is "T"-shaped, the groove of pattern block 2 bottoms also is "T"-shaped groove accordingly.
Other are with embodiment 1.
Embodiment 8
Pattern block 2 and lower side panel 5 are in the connected mode of mold axis direction as shown in figure 10, the projection and the lower side panel 5 on lower side panel 5 tops are integrative-structure, the section configuration of projection is "T"-shaped, pattern block 2 bottoms "T"-shaped groove combine along the hard-wired antifriction piece 6 of groove radial edges by the groove of pattern block 2 bottoms and two.
Other are with embodiment 1.
Embodiment 9
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in figure 11, projection and the lower side panel 5 on lower side panel 5 tops are integrative-structure, the section configuration of projection is for falling swallow-tail form, the groove of pattern block 2 bottoms also is dovetail groove accordingly.
Other are with embodiment 1.
Embodiment 10
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in figure 12, the projection on lower side panel 5 tops is the slide block 4 that is fixed on lower side panel 5 tops, the section configuration of slide block 4 is "T"-shaped, the groove of pattern block 2 bottoms also is "T"-shaped groove accordingly.
Other are with embodiment 1.
Embodiment 11
Pattern block 2 and lower side panel 5 are in the connected mode of mold axis direction as shown in figure 13, the projection on lower side panel 5 tops is the slide block 4 that is fixed on lower side panel 5 tops, the section configuration of slide block 4 is "T"-shaped, pattern block 2 bottoms "T"-shaped groove combine along the hard-wired antifriction piece 6 of groove radial edges by the groove of pattern block 2 bottoms and two.
Other are with embodiment 1.
Embodiment 12
Pattern block 2 and lower side panel 5 in the connected mode of mold axis direction as shown in figure 14, the projection on lower side panel 5 tops is the slide block 4 that is fixed on lower side panel 5 tops, the section configuration of slide block 4 is for falling swallow-tail form, the groove of pattern block 2 bottoms is accordingly for falling dovetail groove.
Other are with embodiment 1.
Embodiment 13
Pattern block can be realized by following technical scheme along moving back and forth synchronously also of mold radius direction on lower side panel top among the present invention: shown in Figure 16 as Figure 15, cancelled the driving lever that is fixed on pattern block outer surface downside, all be vertically fixed with a "T"-shaped gib block 4 on the outer surface inclined-plane of each pattern block 2, the inner surface of middle die sleeve 1 is provided with and each "T"-shaped gib block 4 corresponding "T"-shaped groove, "T"-shaped groove is combined by vertical straight trough and the two blocks of antifriction plates 6 that are fixed on the straight trough edge of die sleeve 1 inner surface in being arranged on, relative slip between gib block 4 and the corresponding groove; Perhaps, the outer surface of each pattern block 2 all is vertically fixed with a swallow-tail form gib block, and the inner surface of middle die sleeve 1 is provided with and the corresponding dovetail groove of each "T"-shaped gib block, relative slip between gib block and the corresponding groove.
During matched moulds, epipleural 3 and middle die sleeve 1 descend together, the inner surface of middle die sleeve 1 promotes the outer surface of each pattern block 2, each pattern block closes up together synchronously, form a complete pattern ring, epipleural 3 and lower side panel 5 also form the outline of a tire with the pattern ring closure simultaneously, and under the pressure of capsule expansion, mold pressing goes out the outer shape of whole tire in the tire base.The epipleural 3 of mould and middle die sleeve 1 rise during die sinking, the "T"-shaped groove and "T"-shaped gib block 4 relative slips of middle die sleeve 1 inner surface, spurring each pattern block 2 outwards moves along the mold radius direction, after epipleural 3 and middle die sleeve 1 rise to certain altitude, "T"-shaped groove separates with "T"-shaped gib block 4, at this moment each pattern block also radially opens, moves to the largest circumference place, and the tire that vulcanizates is stayed on the lower side panel 5, can take out from mould.
Other are with above-mentioned embodiment.
Embodiment 14
Pattern block can be realized by following technical scheme along moving back and forth synchronously also of mold radius direction on lower side panel top among the present invention: cancellation is fixed on the driving lever of pattern block outer surface downside, at each pattern block outer setting one radial expansion oil cylinder, the push rod of oil cylinder connects one by one with corresponding pattern block, thereby pushes away, draws pattern block to move back and forth synchronously along the mold radius direction on lower side panel top.
Other are with above-mentioned embodiment.