Tire vulcanization inner cavity mold

Abstract

The utility model discloses a tire vulcanization inner cavity mold, which belongs to the technical field of tire vulcanization equipment, and comprises an outer mold provided with a first locking part, and the outer mold comprises a side plate provided with a first circumferential positioning part; the rigid inner mold is arranged in the outer mold; a second locking part, a second circumferential positioning part and a first radial positioning part are arranged on the rigid inner mold, the rigid inner mold is locked by the first locking part and the second locking part, the rigid inner mold is positioned in the circumferential direction by the first circumferential positioning part and the second circumferential positioning part, and the second radial positioning part is arranged on the outer mold; the rigid inner mold is positioned in the radial direction by the first radial positioning part and the second radial positioning part; by means of the first circumferential positioning part, the second circumferential positioning part, the first radial positioning part and the second radial positioning part, the rigid inner mold can be positioned in advance, the first locking part and the second locking part are only used for accurate positioning of the rigid inner mold and locking in the vulcanization process, the circle splicing accuracy of the rigid inner mold is guaranteed, and the service life of the rigid inner mold is prolonged. And abrasion of the rigid inner mold and the side plates is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire vulcanization equipment technical field, concretely relates to a tire vulcanization inner cavity mould. BACKGROUND

[0002] In recent years, in order to improve the performance of tire, rigid inner mold is used to form the inner contour of tire, compared with the tire vulcanized by bladder, the inner contour of tire vulcanized by rigid inner mold is more close to the design contour, which can greatly improve the performance of tire.

[0003] At present, the structure of rigid inner mold is generally block type, and the radial opening and closing movement of each inner module still exists during use, therefore, the circle assembling precision of rigid inner mold needs to be particularly controlled during vulcanizing tire, to ensure that the adjacent inner modules do not form misalignment or vertical seam gap, to avoid affecting the appearance and quality of vulcanized tire, for example, the patent CN214448723U provides a tire vulcanization equipment, which sets locking feature (matching first positioning protrusion and first positioning groove) between rigid inner mold and side plate, to control the circle assembling precision of rigid inner mold, at the same time, due to the restraint force of tire blank, the fully expanded state of rigid inner mold is maintained by the locking feature, the locking feature is separated and matched with the opening and closing mold of tire vulcanization mould, and needs to bear large force for a long time during matching, which is easy to cause damage such as bumping and wear; since the inner module and the side plate are both cavity components of tire vulcanization mould, if the inner module or the side plate is disassembled from the machine for maintenance, not only the maintenance process is complex, but also the production efficiency of tire is affected; and the design of the locking feature needs to be based on the specific structure of the inner module and the side plate, and the deviation correction amount of the inner module in the radial direction is limited, if the position of the inner module in the radial direction exceeds the deviation correction amount of the locking feature, the rigid inner mold and the outer mold may be damaged.

[0004] Therefore, it is an urgent problem to be solved at present to develop and design a tire vulcanization inner cavity mould, which can ensure the circle assembling precision of rigid inner mold, reduce the wear of rigid inner mold and side plate and prolong the service life, and ensure the production efficiency. UTILITY MODEL CONTENTS

[0005] For the problems existing in the prior art, the utility model provides a tire vulcanization inner cavity mould, which can realize the advance positioning of rigid inner mold by using the matched first and second circumferential positioning parts and the matched first and second radial positioning parts, the matched first and second locking parts are only used for the precise positioning of rigid inner mold and locking during vulcanization, under the premise of ensuring the circle assembling precision of rigid inner mold, the wear of rigid inner mold and side plate can be reduced and the service life can be prolonged, and the production efficiency of tire vulcanization can be ensured.

[0006] In order to achieve the above object, the utility model adopts the technical scheme as follows:

[0007] The utility model provides a kind of tire vulcanization inner cavity mould, comprising:

[0008] Outer mould, first locking portion is equipped on the outer mould;The outer mould includes side plate, first circumferential positioning portion is equipped on the side plate;

[0009] Rigid inner mould, the rigid inner mould is located in the outer mould and is formed with the outer mould vulcanization cavity;Second locking portion matched with the first locking portion is equipped on the rigid inner mould, and at least part of the first locking portion is in contact with at least part of the second locking portion to lock the rigid inner mould;Second circumferential positioning portion matched with the first circumferential positioning portion is equipped on the rigid inner mould, and at least part of the first circumferential positioning portion is in contact with at least part of the second circumferential positioning portion to position the rigid inner mould in circumferential direction;First radial positioning portion is equipped on the rigid inner mould;

[0010] Second radial positioning portion, the second radial positioning portion is equipped on the outer mould, and the first radial positioning portion and the second radial positioning portion gap fit to position the rigid inner mould in radial direction.

[0011] As a preferred technical scheme, the side plate includes upper side plate and lower side plate.

[0012] As a preferred technical scheme, the first locking portion is respectively equipped at the lower surface of the upper side plate and the upper surface of the lower side plate;One of the first locking portion and the second locking portion is provided as locking protrusion, and the other is provided as locking recess;At least part of the locking protrusion is embedded in the locking recess.

[0013] As a preferred technical scheme, the locking recess includes oppositely arranged first side wall and second side wall, the first side wall is arranged closer to the axis of the rigid inner mould compared with the second side wall, the first side wall gradually moves away from the axis of the rigid inner mould along the embedding direction of the locking protrusion, and the second side wall gradually moves closer to the axis of the rigid inner mould along the embedding direction of the locking protrusion;The shape of the locking protrusion is matched with the locking recess;

[0014] And / or, the locking protrusion is in the form of a circular ring, or the locking protrusion is provided as a plurality and is distributed in circumferential direction.

[0015] As a preferred technical scheme, the first circumferential positioning portion is equipped on the lower side plate;One of the first circumferential positioning portion and the second circumferential positioning portion is provided as circumferential positioning protrusion, and the other is provided as circumferential positioning recess;At least part of the circumferential positioning protrusion is embedded in the circumferential positioning recess.

[0016] As a preferred technical solution, edges of protruding ends of the circumferential positioning protrusions and notches of the circumferential positioning grooves are both provided with first chamfers;

[0017] And / or, the circumferential positioning protrusions are detachably connected with the rigid inner mold;

[0018] And / or, the circumferential positioning protrusions are provided in plurality, and the number and shape of the circumferential positioning grooves are matched with the circumferential positioning protrusions.

[0019] As a preferred technical solution, the outer mold further comprises an upper cover, a lower heat plate, a base and a centering ring, the upper side plate is fixedly connected with the upper cover, the base is arranged on the lower heat plate, the lower side plate is fixedly connected with the base, and the centering ring is fixedly connected with the lower heat plate;

[0020] The second radial positioning part is provided in two, one of which is fixedly connected with the upper side plate or the upper cover, and the other is fixedly connected with the lower side plate or the centering ring;

[0021] The rigid inner mold is formed by sequentially splicing a plurality of inner mold blocks in the circumferential direction.

[0022] As a preferred technical solution, the inner mold blocks are each provided with a first positioning block at an inner circular arc surface close to a sub-opening of the rigid inner mold, and the first positioning block forms the first radial positioning part; the second radial positioning part is in the form of a circular ring, or the second radial positioning part comprises a plurality of second positioning blocks distributed in the circumferential direction, and each of the second positioning blocks is in clearance fit with at least two of the first positioning blocks;

[0023] Or, the second radial positioning part comprises a plurality of positioning cones distributed in the circumferential direction, each of the inner mold blocks is provided with a positioning hole matched with the positioning cone, a positioning sleeve is arranged in the positioning hole, the positioning sleeve forms the first radial positioning part, and the positioning cone extends into the positioning sleeve.

[0024] As a preferred technical solution, a positioning boss is arranged on the second radial positioning part corresponding to the side plate;

[0025] And / or, the first radial positioning part and the second radial positioning part are both provided with matched second chamfers at the clearance fit positions;

[0026] And / or, the first radial positioning part is detachably connected with the inner mold, and the second radial positioning part is detachably connected with the outer mold;

[0027] And / or, a circumferentially extending grease storage groove is arranged on a surface of the second radial positioning part in clearance fit with the first radial positioning part;

[0028] And / or, the cooperation gap between the first radial positioning part and the second radial positioning part is 0.2-1mm.

[0029] As a preferred technical solution, the material hardness of the second circumferential positioning part is lower than the material hardness of the first circumferential positioning part; the material hardness of the first radial positioning part is lower than the material hardness of the second radial positioning part.

[0030] The beneficial effects of the utility model lie in:

[0031] 1. The utility model discloses a first circumferential positioning part and a second circumferential positioning part and a first radial positioning part and a second radial positioning part are matched, can realize the positioning of rigid inner mould in advance when vulcanizing a tire, have greater rectification range to inner module in the radial direction, and the first locking part and the second locking part are matched and are only used for the accurate positioning of rigid inner mould and locking in the vulcanization process, can reduce the wear and tear of rigid inner mould and side plate, avoid the bruise and prolong the service life under the premise of guaranteeing the circle accuracy of rigid inner mould, guarantee the production efficiency of tire vulcanization.

[0032] 2. The first circumferential positioning part, the second circumferential positioning part, the first radial positioning part and the second radial positioning part of the utility model jointly form the positioning structure of rigid inner mould in advance, the size of the positioning structure in advance is no longer limited to the specific structure of rigid inner mould and side plate, and the positioning structure in advance can have greater rectification range, and the positioning structure in advance is convenient to disassemble and replace, reduces the occupied time of machine table, and reduces the influence on tire vulcanization production efficiency. ACCURACY

[0033] Figure 1 It is the whole structure schematic view of the first kind of embodiment of the utility model a tire vulcanization inner cavity mould;

[0034] Figure 2 It is Figure 1 The enlarged view of area A in it;

[0035] Figure 3 It is Figure 1 The sectional view of B-B direction in it;

[0036] Figure 4 It is Figure 1 The structure schematic view of one inner module and lower side plate cooperation in it;

[0037] Figure 5 It is Figure 1 The structure schematic view of outer mould and rigid inner mould in the first state in it;

[0038] Figure 6 It is Figure 1 The structure schematic view of outer mould and rigid inner mould in the second state in it;

[0039] Figure 7 is Figure 1 the structure schematic view of the outer mold and the rigid inner mold in the third state in

[0040] Figure 8 is Figure 1 the structure schematic view of the outer mold and the rigid inner mold in the fourth state in

[0041] Figure 9 is the overall structure schematic view of the second embodiment of the tire vulcanization inner cavity mold of the utility model;

[0042] Figure 10 is Figure 9 the sectional view of C-C direction in

[0043] Figure 11 is the overall structure schematic view of the third embodiment of the tire vulcanization inner cavity mold of the utility model;

[0044] Figure 12 is Figure 11 the sectional view of D-D direction in

[0045] In the drawing: 11 - upper cover, 12 - lower hot plate, 13 - base, 14 - centering ring, 15 - mounting ring, 16 - guide ring, 17 - slider, 18 - pattern block, 21 - upper side plate, 22 - lower side plate, 31 - first locking part, 32 - second locking part, 33 - first side wall, 34 - second side wall, 41 - first circumferential positioning part, 42 - second circumferential positioning part, 43 - first chamfer, 5 - rigid inner mold, 51 - inner mold block, 61 - first radial positioning part, 62 - second radial positioning part, 63 - positioning cone, 64 - positioning hole, 65 - positioning sleeve, 66 - positioning boss, 67 - second chamfer, 68 - grease storage groove, 7 - tire blank. DETAILED DESCRIPTION

[0046] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.

[0047] Example one

[0048] Please refer to Figures 1-8 , a kind of embodiment provided by the utility model of tire vulcanization inner cavity mold, including outer mold and rigid inner mold 5, rigid inner mold 5 is located in outer mold and with outer mold forms and tire blank 7 matching vulcanization cavity;First locking part 31 is provided on outer mold, rigid inner mold 5 is provided with the second locking part 32 matched with first locking part 31, when first locking part 31 and second locking part 32 cooperate, at least part of first locking part 31 and at least part of second locking part 32 abut, can be slightly adjusted in radial direction Position of rigid inner mold 5 and accurately position and lock rigid inner mold 5.

[0049] Meanwhile, the outer mold comprises side plates, and the side plates are further provided with first circumferential positioning portions 41, and the rigid inner mold 5 is provided with second circumferential positioning portions 42 matched with the first circumferential positioning portions 41, and when the first circumferential positioning portions 41 cooperate with the second circumferential positioning portions 42, at least part of the first circumferential positioning portions 41 abuts against at least part of the second circumferential positioning portions 42, so that the rigid inner mold 5 can be positioned in the circumferential direction;

[0050] Further, the rigid inner mold 5 is provided with first radial positioning portions 61, and the outer mold is provided with second radial positioning portions 62, and during the closing of the outer mold, the first radial positioning portions 61 abut against the second radial positioning portions 62, so that the rigid inner mold 5 can be greatly corrected and positioned in the radial direction, and the positions of the inner mold blocks 51 of the rigid inner mold 5 in the radial direction are positioned in advance, so that the first locking portions 31 and the second locking portions 32 can cooperate with each other, and after the first locking portions 31 and the second locking portions 32 cooperate, the first radial positioning portions 61 and the second radial positioning portions 62 are in a clearance fit state.

[0051] It should be noted that the circumferential positioning protrusions, the first radial positioning portions 61 and the second radial positioning portions 62 are all wear parts, and the circumferential positioning protrusions are preferably detachably connected with the rigid inner mold 5; meanwhile, the first radial positioning portions 61 are preferably detachably connected with the inner mold blocks 51, and the second radial positioning portions 62 are preferably detachably connected with the outer mold through screws and / or connecting pins, so as to facilitate installation and replacement, and the service life of the side plates and the rigid inner mold 5 will not be affected.

[0052] Further, the material hardness of the second circumferential positioning portions 42 is preferably lower than that of the first circumferential positioning portions 41, and the material hardness of the first radial positioning portions 61 is preferably lower than that of the second radial positioning portions 62, so that the wear positions can be concentrated at the second circumferential positioning portions 42 and the first radial positioning portions 61, and since the second circumferential positioning portions 42 and the first radial positioning portions 61 are both located on the rigid inner mold 5, replacement is more convenient.

[0053] Further, a set of second radial positioning portions 62 on the outer mold can be applicable to rigid inner molds 5 of various different sizes, and only the first radial positioning portions 61 of different thicknesses need to be installed on the rigid inner molds 5 of other specifications before the rigid inner molds 5 of other specifications are replaced, so as to ensure that the distribution circle size corresponding to the first radial positioning portions 61 corresponds to the second radial positioning portions 62.

[0054] In the embodiment, please refer to Figure 1 , Figures 5-8, the side plate comprises an upper side plate 21 and a lower side plate 22, the upper side plate 21 is located above the vulcanization cavity, and the lower side plate 22 is located below the vulcanization cavity; the first locking part 31 is respectively arranged at the lower surface of the upper side plate 21 and the upper surface of the lower side plate 22; the first locking part 31 is arranged as a locking protrusion, and correspondingly, the second locking part 32 on the rigid inner mold 5 is arranged as a locking groove; when matched, at least part of the locking protrusion is embedded in the locking groove to realize the locking and accurate positioning of the side plate to the rigid inner mold 5; in other embodiments, the first locking part 31 can also be arranged as a locking groove, and correspondingly, the second locking part 32 is arranged as a locking protrusion, so as to realize the locking and positioning of the outer mold to the rigid inner mold 5.

[0055] Further, please refer to Figure 2 , the locking groove should comprise a first side wall 33 and a second side wall 34 arranged oppositely, the first side wall 33 is arranged closer to the axis of the rigid inner mold 5 than the second side wall 34, the first side wall 33 gradually moves away from the axis of the rigid inner mold 5 along the embedding direction of the locking protrusion, the second side wall 34 gradually moves closer to the axis of the rigid inner mold 5 along the embedding direction of the locking protrusion, the shape of the locking protrusion is matched with the locking groove, when the locking protrusion cooperates with the inclined surface formed by the first side wall 33 and the second side wall 34, the position of each inner mold block 51 of the rigid inner mold 5 can be slightly adjusted in the radial direction while the rigid inner mold 5 is locked, the maximum value of the amplitude is the maximum width a of the first side wall 33 and the second side wall 34 in the radial direction, and the circular assembly accuracy of the rigid inner mold 5 is ensured.

[0056] Specifically, please refer to Figure 3 , the locking protrusion is preferably in the shape of a ring, which can cooperate with all the locking grooves on the inner mold blocks 51 in the circumferential direction; in other embodiments, the locking protrusion can also be arranged as a plurality of matching inner mold blocks 51 and distributed in the circumferential direction, which can also accurately position the radial position of all the inner mold blocks 51 while locking them.

[0057] In the embodiment, please refer to Figure 3 and Figure 4 , the first circumferential positioning part 41 is arranged on the lower side plate 22; the first circumferential positioning part 41 is arranged as a circumferential positioning groove, and correspondingly, the second circumferential positioning part 42 on the rigid inner mold 5 is arranged as a circumferential positioning protrusion; when matched, at least part of the circumferential positioning protrusion is embedded in the circumferential positioning groove to realize the circumferential positioning of the side plate to the rigid inner mold 5; in other embodiments, the first circumferential positioning part 41 can also be arranged on the upper side plate 21 alone or on the upper side plate 21 and the lower side plate 22 simultaneously; or, the first circumferential positioning part 41 can also be arranged as a circumferential positioning protrusion, and correspondingly, the second circumferential positioning part 42 is arranged as a circumferential positioning groove; all of which can realize the circumferential positioning of the side plate to the rigid inner mold 5.

[0058] Specifically, please refer to Figure 4The edge of the protruding end of the circumferential positioning protrusion and the edge of the notch of the circumferential positioning groove are both provided with a first chamfer 43. When the outer mold is closed, the first chamfer 43 at the protruding end of the circumferential positioning protrusion first contacts the first chamfer 43 at the notch of the circumferential positioning groove, which can guide the rigid inner mold 5 to rotate circumferentially at a small amplitude, so as to ensure that the circumferential positioning protrusion is embedded into the circumferential positioning groove, thereby achieving the circumferential positioning of the rigid inner mold 5.

[0059] Further, please refer to Figure 3 and Figure 4 The circumferential positioning protrusion can be one or more. When the circumferential positioning protrusion is multiple, it can correspond to the circumferentially distributed inner mold blocks 51 one by one. The number and shape of the circumferential positioning grooves are matched with the circumferential positioning protrusions, which can position each inner mold block 51 in the circumferential direction.

[0060] In the embodiment, please refer to Figure 1 The outer mold further includes an upper cover 11, a lower heat plate 12, a base 13, a centering ring 14, a mounting ring 15, a guide ring 16, a sliding block 17, and a pattern block 18. The upper side plate 21 is fixedly connected with the upper cover 11. The base 13 is arranged on the lower heat plate 12. The lower side plate 22 is fixedly connected with the base 13. The centering ring 14 is fixedly connected with the lower heat plate 12. The mounting ring 15 is fixedly connected with the guide ring 16. The pattern block 18 is fixed on the sliding block 17. The guide ring 16 forms a wedge structure with the sliding block 17 through a guide strip. During the opening and closing of the outer mold, the mounting ring 15 moves up and down to drive the pattern block 18 to open and close radially.

[0061] Further, please refer to Figure 1 , Figure 2 , Figures 5-8 The second radial positioning part 62 is annular and provided with two, one of which is fixedly connected with the upper cover 11, and the other is fixedly connected with the centering ring 14. Correspondingly, the first radial positioning part 61 is also arranged on the inner arc surface at the sub-port of the upper and lower ends of the rigid inner mold 5. The second radial positioning part 62 cooperates with the first radial positioning part 61 to simultaneously position the rigid inner mold 5 radially from the upper and lower ends, thereby ensuring the positioning effect. In other embodiments, the two second radial positioning parts 62 can be arranged on the upper side plate 21 and the lower side plate 22, respectively, so as to cooperate with the first radial positioning part 61 and be easy to install.

[0062] Further, please refer to Figure 3 The rigid inner mold 5 is sequentially spliced by a plurality of inner mold blocks 51 in the circumferential direction. The inner mold block 51 is provided with a first positioning block at the inner arc surface near the sub-port of the rigid inner mold 5, and the first positioning block forms the first radial positioning part 61. When the outer mold is closed, the first positioning block first contacts the annular second radial positioning part 62, which can greatly correct the position of each inner mold block 51 in the radial direction.

[0063] It needs to be noted that Figure 2 , the gap matching part between the first radial positioning part 61 and the second radial positioning part 62 is provided with a matched second chamfer 67, when the outer mold is closed, the second chamfer 67 at the lower edge of the second radial positioning part 62 first contacts the second chamfer 67 at the upper edge of the first radial positioning part 61, which can guide the rigid inner mold 5 to move radially by a large amplitude to realize early positioning, the moving amplitude is the maximum width b of the second chamfer 67 in the radial direction, and b>a, which can make all the inner mold blocks 51 move to the position close to the to-be-locked position, ensure that the locking protrusions and the locking grooves can be matched to lock the locking protrusions, and the locking protrusions and the locking grooves will not be damaged; in addition, when the outer mold is closed to lock and accurately position the rigid inner mold 5, the matching gap c between the first radial positioning part 61 and the second radial positioning part 62 is 0.2-1mm.

[0064] Specifically, please refer to Figure 1 , Figures 5-8 , the second radial positioning part 62 is provided with a positioning boss 66 at the corresponding side plate, the positioning boss 66 abuts against the side plate, and the relative position between the second radial positioning part 62 and the side plate can be accurately determined through the positioning boss 66.

[0065] In order to reduce the friction between the second radial positioning part 62 and the first radial positioning part 61, please refer to Figure 2 , the surface of the gap matching part between the second radial positioning part 62 and the first radial positioning part 61 is provided with a circumferentially extending grease storage groove 68, the grease storage groove 68 is provided with lubricating grease, which can effectively reduce the friction when in contact; specifically, the grease storage groove 68 can be a whole circular groove, or a plurality of circumferentially distributed arc grooves.

[0066] Please refer to Figure 1 , Figures 5-8 , the specific operation process of the utility model is as follows:

[0067] Figures 5-8 is the closing process of the outer mold;

[0068] In the first state, as shown in Figure 5 , the outer mold is in the open mold state, the rigid inner mold 5 sleeved with the embryo 7 is placed in the cavity of the outer mold;

[0069] In the second state, as shown in Figure 6As shown, the rigid inner mold 5 is placed on the lower side plate 22, and the second chamfer 67 on the first radial positioning part 61 at the lower end of the rigid inner mold 5 is matched with the second chamfer 67 on the second radial positioning part 62 on the lower side plate 22, so that the position of each inner mold block 51 can be guided in the radial direction from the lower end of the rigid inner mold 5; at the same time, the first circumferential positioning part 41 on the lower side plate 22 also starts to match with the second circumferential positioning part 42 on the rigid inner mold 5, so that the rigid inner mold 5 is positioned in advance in the circumferential direction.

[0070] In the third state, as shown in Figure 7 , the outer mold starts to close, and the second chamfer 67 on the second radial positioning part 62 at the upper end of the rigid inner mold 5 is matched with the second chamfer 67 on the second radial positioning part 62 on the upper side plate 21, so that the position of each inner mold block 51 can be guided in the radial direction from the upper end of the rigid inner mold 5, and the rigid inner mold 5 is positioned in advance.

[0071] In the fourth state, as shown in Figure 8 , the outer mold continues to close, and the second chamfer 67 of the second radial positioning part 62 is separated from the second chamfer 67 of the first radial positioning part 61, so that the second radial positioning part 62 and the first radial positioning part 61 no longer adjust the radial position of the rigid inner mold 5; the first locking part 31 starts to match with the second locking part 32, slightly adjusts the position of the rigid inner mold 5 in the radial direction, and expands the rigid inner mold 5.

[0072] When the outer mold is in the closed state, as shown in Figure 1 , the first locking part 31 and the second locking part 32 are closely matched, so that the rigid inner mold 5 is locked and accurately positioned, and the circle fitting accuracy of the rigid inner mold 5 is ensured.

[0073] Embodiment Two

[0074] Please refer to Figure 9 and Figure 10 The main difference between this embodiment and Embodiment One is that the second radial positioning part 62 includes a plurality of second positioning blocks distributed in the circumferential direction, each second positioning block is matched with at least two first positioning blocks on the inner mold blocks 51, and each second radial positioning part 62 is matched with the first positioning blocks on two adjacent inner mold blocks 51 when the outer mold is closed, so that all the inner mold blocks 51 can be moved in the radial direction and positioned in advance.

[0075] It should be noted that in this embodiment, each second positioning block is independently provided, so when a second positioning block is worn, only the second positioning block needs to be replaced, and maintenance is more convenient and efficient.

[0076] Embodiment Three

[0077] Please refer to Figure 11and Figure 12 The main difference between the embodiment and the embodiment one is that the second radial positioning part 62 comprises a plurality of positioning cones 63 which are distributed in the circumferential direction and correspond to the inner modules 51, each of the inner modules 51 is provided with a positioning hole 64 which matches the positioning cone 63, the positioning hole 64 is provided with a positioning sleeve 65, the positioning sleeve 65 forms the first radial positioning part 61, and the positioning cone 63 extends into the positioning sleeve 65 to realize the radial positioning of all the inner modules 51 in advance; specifically, the positioning sleeve 65 and the positioning hole 64 are preferably provided with an interference fit.

[0078] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A tire curing bladder mold characterized by, The application relates to a vulcanization mold, which comprises the following parts: an outer mold, which is provided with a first locking part (31); the outer mold comprises a side plate, which is provided with a first circumferential positioning part (41); a rigid inner mold (5), which is arranged in the outer mold and forms a vulcanization cavity with the outer mold; the rigid inner mold (5) is provided with a second locking part (32) matched with the first locking part (31), and at least part of the first locking part (31) and at least part of the second locking part (32) abut to lock the rigid inner mold (5); the rigid inner mold (5) is provided with a second circumferential positioning part (42) matched with the first circumferential positioning part (41), and at least part of the first circumferential positioning part (41) and at least part of the second circumferential positioning part (42) abut to position the rigid inner mold (5) in the circumferential direction; the rigid inner mold (5) is provided with a first radial positioning part (61); a second radial positioning part (62), which is arranged on the outer mold, and the first radial positioning part (61) and the second radial positioning part (62) gap-fit to position the rigid inner mold (5) in the radial direction.

2. A tire curing bladder mold as defined in claim 1, wherein, The side plate comprises an upper side plate (21) and a lower side plate (22).

3. A tire curing bladder mold as defined in claim 2, wherein, The first locking part (31) is arranged at the lower surface of the upper side plate (21) and the upper surface of the lower side plate (22) respectively; one of the first locking part (31) and the second locking part (32) is arranged as a locking protrusion, and the other is arranged as a locking groove; at least part of the locking protrusion is embedded in the locking groove.

4. A tire curing bladder mold as defined in claim 3, wherein, The locking groove comprises oppositely arranged first and second side walls (33) and (34), the first side wall (33) is arranged closer to the axis of the rigid inner mold (5) than the second side wall (34), the first side wall (33) gradually moves away from the axis of the rigid inner mold (5) along the embedding direction of the locking protrusion, and the second side wall (34) gradually moves closer to the axis of the rigid inner mold (5) along the embedding direction of the locking protrusion; the shape of the locking protrusion matches the locking groove; And / or, the locking protrusion is in the shape of a ring, or the locking protrusion is arranged in multiple and distributed in the circumferential direction.

5. A tire curing bladder mold as defined in claim 2, wherein, The first circumferential positioning part (41) is arranged on the lower side plate (22); one of the first circumferential positioning part (41) and the second circumferential positioning part (42) is arranged as a circumferential positioning protrusion, and the other is arranged as a circumferential positioning groove; at least part of the circumferential positioning protrusion is embedded in the circumferential positioning groove.

6. A tire curing bladder mold as defined in claim 5, wherein, First chamfers (43) are arranged at the edges of the protruding ends of the circumferential positioning protrusion and the notches of the circumferential positioning groove; And / or, the circumferential positioning protrusion is detachably connected with the rigid inner mold (5); And / or, the circumferential positioning protrusion is arranged in multiple, and the number and shape of the circumferential positioning groove match the circumferential positioning protrusion.

7. A tire curing bladder mold as defined in claim 2 wherein, The outer mold further comprises an upper cover (11), a lower hot plate (12), a base (13) and a centering ring (14), the upper side plate (21) is fixedly connected with the upper cover (11), the base (13) is arranged on the lower hot plate (12), the lower side plate (22) is fixedly connected with the base (13), and the centering ring (14) is fixedly connected with the lower hot plate (12); The second radial positioning part (62) is provided with two, one of which is fixedly connected with the upper side plate (21) or the upper cover (11), and the other is fixedly connected with the lower side plate (22) or the centering ring (14); The rigid inner mold (5) is sequentially spliced by a plurality of inner mold blocks (51) in the circumferential direction.

8. A tire curing bladder mold as defined in claim 7, wherein, The inner mold block (51) is provided with a first positioning block at the inner circular arc surface close to the sub-port of the rigid inner mold (5), and the first positioning block forms the first radial positioning part (61); the second radial positioning part (62) is in the form of a circular ring, or the second radial positioning part (62) comprises a plurality of second positioning blocks distributed in the circumferential direction, and each second positioning block is in gap cooperation with at least two first positioning blocks; Or, the second radial positioning part (62) comprises a plurality of positioning cones (63) distributed in the circumferential direction, each inner mold block (51) is provided with a positioning hole (64) matched with the positioning cone (63), the positioning hole (64) is provided with a positioning sleeve (65) therein, the positioning sleeve (65) forms the first radial positioning part (61), and the positioning cone (63) extends into the positioning sleeve (65).

9. A tire curing bladder mold as defined in claim 7, wherein, The second radial positioning part (62) is provided with a positioning boss (66) corresponding to the side plate; And / or, the first radial positioning part (61) and the second radial positioning part (62) are provided with matched second chamfers (67) at the gap cooperation positions; And / or, the first radial positioning part (61) is detachably connected with the inner mold block (51), and the second radial positioning part (62) is detachably connected with the outer mold; And / or, the second radial positioning part (62) is provided with a circumferentially extending grease storage groove (68) on the surface in gap cooperation with the first radial positioning part (61); And / or, the cooperation gap between the first radial positioning part (61) and the second radial positioning part (62) is 0.2-1mm.

10. A tire curing bladder mold as defined in claim 1, wherein, The material hardness of the second circumferential positioning part (42) is lower than that of the first circumferential positioning part (41), and the material hardness of the first radial positioning part (61) is lower than that of the second radial positioning part (62).

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