CN209920336U

CN209920336U - Tire mold

Info

Publication number: CN209920336U
Application number: CN201921826365.4U
Authority: CN
Inventors: 刘代平; 朱衍顺; 张伟; 刘卫华; 王家栋; 翟宝堂
Original assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Current assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-01-10
Anticipated expiration: 2029-10-29

Abstract

The utility model provides a tire mold relates to tire processing's technical field. The tire mold comprises a mold shell assembly and an adjusting assembly, wherein the adjusting assembly comprises a first supporting piece, a second supporting piece and an adjusting piece, and the adjusting piece is used for adjusting the distance between the first supporting piece and the second supporting piece; the first supporting piece is abutted with the upper ring, the second supporting piece is abutted with the middle sleeve, a pre-load avoiding gap is formed between the upper ring and the middle sleeve, and a pre-load convex part is formed at the top of the upper ring. The tire mold has the advantages of convenient adjustment of the pre-pressing loading amount, high precision and low cost.

Description

Tire mold

Technical Field

The utility model belongs to the technical field of the tire processing technique and specifically relates to a tire mould is related to.

Background

The tire is one of important components of a vehicle, and can effectively absorb shock and reduce noise and ensure the adhesion between the wheel and the road surface on the basis of supporting the vehicle. In order to guarantee the physical and mechanical properties of the tire, a vulcanization mold is generally needed to be used for carrying out vulcanization treatment on the molded tire blank, and in the vulcanization treatment process, the vulcanization mold needs to be provided with a pre-pressing loading amount, namely, the middle sleeve or the upper ring is higher than the upper end surface of the upper cover by a distance so as to guarantee that the mold can provide enough holding force for the pattern block when the mold is closed, and the outward movement of the pattern block caused by factors such as inflation and pressurization of a capsule, mold expansion force and the like is counteracted. If the pre-pressing loading amount is insufficient, the pattern block is not matched in place possibly, and the phenomenon of edge gluing of the tire can occur; if the pre-pressing loading amount is too large, the upper cover may move upwards, so that steps appear at the positions of the tire tread pattern blocks corresponding to the upper die and the upper side plate; therefore, the setting of the amount of preload of the vulcanizing mold is particularly important. In addition, since the vulcanization mold is worn and the edge of the part is turned up after a certain period of time, the amount of preload of the mold needs to be adjusted from time to ensure the accuracy of the amount of preload.

However, the pre-load amount of the existing vulcanizing mold is difficult to adjust.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tire mould to the great technical problem of the degree of difficulty is adjusted to the pre-compaction load capacity of the curing mould that has alleviated existence among the prior art.

The embodiment of the utility model provides a tire mold, including mould shell subassembly and adjusting part, the mould shell subassembly includes upper ring and well cover, the adjusting part includes first support piece, second support piece and regulating part, the regulating part is used for adjusting the interval between first support piece and the second support piece;

the first supporting piece is abutted with the upper ring, the second supporting piece is abutted with the middle sleeve, a pre-load avoiding gap is formed between the upper ring and the middle sleeve, and a pre-load convex part is formed at the top of the upper ring.

In an alternative embodiment, the formwork assembly is provided with a receiving groove, and the adjustment assembly is received in the receiving groove.

In an optional embodiment, the holding tank includes a first tank body and a second tank body, the first tank body is arranged on the bottom surface of the upper ring, the opening of the first tank body faces downward, and the second tank body is arranged on the top surface of the middle sleeve, the opening of the second tank body faces upward.

In an alternative embodiment, the adjustment assembly is a clearance fit with the receiving slot.

In an optional embodiment, the adjusting member includes an elastic member and a threaded member, the threaded member includes a clamping joint and a stud fixedly connected to the clamping joint, one of the first support member and the second support member is provided with a through hole, the other one of the first support member and the second support member is provided with a threaded hole, the stud passes through the through hole and is in threaded connection with the threaded hole, and the clamping joint is clamped at an edge of the through hole; the elastic part is supported between the first supporting part and the second supporting part;

the formwork component is provided with a first accommodating groove for accommodating the clamping joint; or one of the first supporting piece and the second supporting piece provided with the through hole is provided with a first accommodating groove for accommodating the clamping joint.

In an optional embodiment, the adjusting part comprises an elastic part, a threaded part and a nut, the threaded part comprises a clamping joint and a stud fixedly connected to the clamping joint, the first supporting part and the second supporting part are both provided with through holes, the stud penetrates through the two through holes to be connected with the nut in a matching manner, and the clamping joint is clamped at the edge of the through hole; the elastic part is supported between the first supporting part and the second supporting part;

the formwork component is provided with a first accommodating groove for accommodating the clamping joint; or, one of the first support member and the second support member, which corresponds to the bayonet joint, is provided with a first accommodating groove for accommodating the bayonet joint;

the formwork component is provided with a second accommodating groove for accommodating the nut; or, one of the first support piece and the second support piece corresponding to the nut is provided with a second accommodating groove for accommodating the nut.

In an alternative embodiment, one of the first support and the second support comprises a sleeve cover opening towards the other, and the other comprises a sliding block, wherein the sliding block is inserted in the sleeve cover in a sliding manner; the elastic piece is supported between the sleeve cover and the sliding block.

In an alternative embodiment, the outer side wall of the sliding block is provided with a scale.

In an alternative embodiment, the elastic member includes a spring, and the spring is sleeved on a column of the stud between the first support and the second support.

In an alternative embodiment, a cylinder of the stud between the first support and the second support is sleeved with an adjusting washer, and one end of the elastic element abuts against the adjusting washer.

In an optional embodiment, the first receiving groove is disposed on and penetrates the upper ring.

In an alternative embodiment, an avoidance slot is provided in an area of the formwork assembly corresponding to the insertion end of the stud.

In an optional embodiment, the size of the pre-load avoiding gap is t, the thickness of the pre-load convex part is h, and t is greater than or equal to h.

In an alternative embodiment, the adjusting assembly is a plurality of adjusting assemblies, and the plurality of adjusting assemblies are arranged at intervals along the circumferential direction of the upper ring.

In an alternative embodiment, the tire mold further comprises a connector connected between the upper ring and the middle sleeve, and the upper ring is axially displaceable relative to the middle sleeve.

In an alternative embodiment, the connector comprises a shoulder screw comprising a threaded head, a threaded section, and a shoulder section connected therebetween; the upper ring is provided with a through hole along the axial direction, the thread section penetrates through the through hole to be connected with the middle sleeve through threads, and the through hole is slidably sleeved on the shaft shoulder section.

The utility model discloses wheel cover mould's beneficial effect includes:

the utility model provides a tire mold, including well cover, fit with a contraceptive ring and be arranged in adjusting the cover and fit with a contraceptive ring between the clearance in order to adjust the adjusting part who fits with a contraceptive ring up end height.

The adjusting assembly is an independent assembly, and in the adjusting assembly, the length of the adjusting part supported between the first supporting part and the second supporting part directly determines the supporting height of the whole adjusting assembly, so that an operator can take the adjusting assembly off the formwork assembly and adjust the length of the adjusting part supported between the first supporting part and the second supporting part on line, thereby realizing the adjustment of the supporting height of the adjusting assembly; when the mold closing device is used, the adjusted adjusting component is arranged between the upper ring and the middle sleeve of the mold shell component, the adjusting component is supported between the upper ring and the middle sleeve, the adjusting height of the adjusting component can be adjusted to realize the adjustment of the distance of the pre-load avoiding gap and the thickness adjustment of the pre-load convex part of the upper ring, namely the setting of the pre-load capacity of the tire mold is realized, so that the middle sleeve of the mold shell component can provide enough holding force for the pattern block when the mold is closed, and the molding quality of the tire is improved.

When the pre-pressing capacity quantity needed by the tire blank is different or the abrasion of the formwork component needs to be compensated by the pre-pressing capacity quantity, an operator only needs to take the adjusting component down from the formwork component, and adjust the supporting height of the adjusting component to the set height on line, and the pre-pressing capacity quantity is adjusted on a high-temperature vulcanization line by comparison with the operator, the adjusting component of the tire mold can be adjusted on line, so that the adjusting component is convenient and fast to adjust and high in safety, and the adjusting precision of the supporting height of the adjusting component can be ensured under the convenient adjusting environment (if the operating environment of the operator is high in convenience, the adjusting component can be finely adjusted, or the supporting height of the adjusting component can be detected by using a measuring instrument with high precision under the line, and the; in addition, the supporting height of the adjusting component has a certain adjusting range, and in the range, the adjusting component can be repeatedly used, the using convenience of the adjusting component can be improved to a certain degree, and the cost of the tire mold is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a sectional view of a tire mold according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of the tire mold of FIG. 1;

FIG. 3 is a partially enlarged view of B in FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 1;

FIG. 5 is an enlarged partial schematic view of the adjustment assembly of the tire mold of FIG. 1 in another form;

fig. 6 is a schematic structural diagram of an adjusting assembly in a tire mold according to an embodiment of the present invention, wherein a stud of the adjusting assembly is in threaded engagement with a nut.

Icon: 10-a formwork assembly; 110-an upper ring; 111-a first trough; 112-caulking groove; 113-perforating holes; 120-middle sleeve; 121-a second trough body; 131-a first receiving groove; 133-avoidance groove; 140-upper cover; 150-a base; 160-upper side plate; 170-pattern blocks; 180-lower side plate; 190-a connector; 191-screw head; 192-shoulder section; 193-a threaded section; 20-an adjustment assembly; 210-a cover; 220-a slider; 221-scale; 230-a screw; 231-a bayonet joint; 232-stud; 240-a resilient member; 250-a nut; 260-adjusting washer; 30-green tyre.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides a tire mold, as shown in fig. 1, fig. 2 and fig. 5, including a mold shell assembly 10 and an adjusting assembly 20, the mold shell assembly 10 includes an upper ring 110 and a middle sleeve 120, the adjusting assembly 20 includes a first supporting member, a second supporting member and an adjusting member, the adjusting member is used for adjusting a distance between the first supporting member and the second supporting member; the first support member abuts against the upper ring 110, the second support member abuts against the middle sleeve 120, a pre-load avoiding gap is formed between the upper ring 110 and the middle sleeve 120, and a pre-load convex part is formed at the top of the upper ring 110.

The tire mold provided by the present embodiment comprises a middle sleeve 120, an upper ring 110 and an adjusting assembly 20 for adjusting the gap between the middle sleeve 120 and the upper ring 110 to adjust the height of the upper end surface of the upper ring 110.

The adjusting assembly 20 is an independent assembly, and in the adjusting assembly 20, the length of the adjusting member supported between the first supporting member and the second supporting member directly determines the supporting height of the entire adjusting assembly 20, so that an operator can take the adjusting assembly 20 off the formwork assembly 10 and adjust the length of the adjusting member supported between the first supporting member and the second supporting member on line, thereby adjusting the supporting height of the adjusting assembly 20; when the mold closing device is used, the adjusted adjusting assembly 20 is installed between the upper ring 110 and the middle sleeve 120 of the mold shell assembly 10, the adjusting assembly 20 is supported between the upper ring 110 and the middle sleeve 120, and the adjustment of the supporting height of the adjusting assembly 20 can realize the adjustment of the distance of the pre-load avoiding gap and the adjustment of the thickness of the pre-load convex part of the upper ring 110, namely the setting of the pre-load amount of the tire mold is realized, so that the middle sleeve 120 of the mold shell assembly 10 can provide enough holding force for the pattern block 170 when the mold is closed, and the molding quality of the tire is improved.

When the required pre-load amount of the green tire 30 is different or the abrasion of the formwork component 10 needs to be compensated by the pre-load amount, an operator only needs to take the adjusting component 20 down from the formwork component 10 and adjust the supporting height of the adjusting component 20 to a set height in an online manner, and compared with the situation that the operator adjusts the pre-load amount on a high-temperature vulcanization line, the adjusting component 20 of the tire mold can be adjusted in an online manner, so that the adjustment is convenient and fast, the safety is high, and the adjustment accuracy of the supporting height of the adjusting component 20 can be ensured under a convenient and fast adjusting environment (for example, the operation environment of the operator is high in convenience, the adjusting component 20 can be finely adjusted, or a measuring instrument with high accuracy can be used for detecting the supporting height of the adjusting component 20 under the; in addition, the support height of adjusting part 20 has certain control range, and in this scope, adjusting part 20 can reuse, also can improve adjusting part 20's the convenient degree of use to a certain extent, reduces the cost of tire mould.

Specifically, as shown in FIG. 1, a tire mold can include a formwork assembly 10 and a cavity assembly, wherein the formwork assembly 10 includes an upper cover 140, an upper ring 110, a middle sleeve 120, and a base 150; the cavity assembly includes an upper plate 160, a block 170, and a lower plate 180, the upper plate 160 is mounted at the bottom of the upper cover 140, the block 170 is slidably connected to a conical surface or an inclined plane (with a flared end of the conical surface or the inclined plane facing downward) inside the middle sleeve 120, and the lower plate 180 is mounted on the top surface of the base 150. During vulcanization, the green tire 30 is loaded into a cavity formed by the upper side plate 160, the pattern block 170 and the lower side plate 180, wherein the upper ring 110 is supported by the adjusting assembly 20, a pre-load convex part is formed by the part of the top of the upper ring 110 higher than the top surface of the upper cover 140, the vulcanizing machine pressing assembly presses the upper ring 110 downwards, the upper ring 110 transmits the pressing acting force to the middle sleeve 120 through the adjusting assembly 20, the middle sleeve 120 moves downwards under stress, the conical surface or inclined plane on the inner side of the middle sleeve 120 applies radial inward holding force to the pattern block 170, and the pattern block 170 presses the green tire 30 radially inwards; the maximum travel of the upper ring 110 that can move downward under the action of the vulcanizer pressing assembly is the thickness of the pre-load protrusion, and when the upper ring 110 moves downward by the thickness, the top surface of the upper ring 110 is as high as the top surface of the upper cover 140, and the vulcanizer pressing assembly can no longer press the upper ring 110 alone; accordingly, the downward stroke of the middle sleeve 120 is constant, and the radially inward holding force of the block 170 driven by the middle sleeve 120 is also constant, i.e., the thickness of the pre-stressed convex portion determines the holding force of the block 170, and the supporting height of the upper ring 110 by the adjusting assembly 20 determines the thickness of the pre-stressed convex portion.

In this embodiment, the formwork assembly 10 can be provided with an accommodating groove, and the adjusting assembly 20 is accommodated in the accommodating groove. The accommodating groove limits the position of the adjusting assembly 20 clamped on the formwork assembly 10, on one hand, the adjusting assembly 20 can be prevented from being separated from the formwork assembly 10 in the vulcanization process, so that the connecting stability of the adjusting assembly 20 and the formwork assembly 10 is improved, and the supporting of the adjusting assembly 20 on the upper ring 110 is ensured; on the other hand, the support of the adjusting assembly 20 to the set position of the upper ring 110 can be ensured, and the situation that the supporting precision is influenced by the deviation of the adjusting assembly 20 is reduced.

Alternatively, the receiving groove may be disposed on the bottom surface of the upper ring 110 with the opening facing downward, the adjusting assembly 20 is received in the receiving groove, one of the first supporting member and the second supporting member abuts against the bottom of the receiving groove, and the other one extends out of the receiving groove and abuts against the middle sleeve 120; alternatively, the receiving groove may be disposed on the top surface of the middle sleeve 120, the opening of the receiving groove faces upward, the adjusting assembly 20 is received in the receiving groove, one of the first supporting member and the second supporting member abuts against the groove bottom of the receiving groove, and the other one extends out of the receiving groove and abuts against the upper ring 110.

In addition, in this embodiment, as shown in fig. 2 and 5, the accommodating groove may further include a first groove 111 and a second groove 121, the first groove 111 is disposed on the bottom surface of the upper ring 110 and has a downward opening, and the second groove 121 is disposed on the top surface of the middle sleeve 120 and has an upward opening. The first groove body 111 and the second groove body 121 together form an accommodating groove, one part of the adjusting assembly 20 is accommodated in the first groove body 111, the other part is accommodated in the second groove body 121, one of the first supporting piece and the second supporting piece is abutted against the groove bottom of the first groove body 111, and the other one is abutted against the groove bottom of the second groove body 121, so that the upper ring 110 and the middle sleeve 120 are supported; the first groove body 111 and the second groove body 121 are limiting for the adjusting assembly 20, and the adjusting assembly 20 can also limit the connecting position of the upper ring 110 and the middle sleeve 120 through the first groove body 111 and the second groove body 121, so that the connecting stability of the upper ring 110, the adjusting assembly 20 and the middle sleeve 120 is improved.

Alternatively, in this embodiment, the adjustment assembly 20 may be clearance fit with the receiving groove. On the basis that the relative holding tank of realization adjusting part 20 removed, improve the matching nature of adjusting part 20 and holding tank, the spacing precision of holding tank to adjusting part 20 is correspondingly improved.

In this embodiment, the adjusting member may include an elastic member 240 and a threaded member 230, the threaded member 230 includes a snap joint 231 and a stud 232 fixedly connected to the snap joint 231, one of the first supporting member and the second supporting member is provided with a through hole, preferably a unthreaded hole, the other one is provided with a threaded hole, the stud 232 passes through the through hole and is in threaded connection with the threaded hole, and the snap joint 231 is snapped at an edge of the through hole; the elastic member 240 is supported between the first support member and the second support member; the shuttering assembly 10 has a first receiving slot 131 for receiving the fastening head 231; or, one of the through holes of the first support member and the second support member is provided with a first receiving groove 131 for receiving the snap joint 231. One end of the stud 232 is connected with one of the first support member and the second support member with a through hole under the limiting effect of the clamping joint 231, the other end of the stud 232 is in threaded connection with the other of the first support member and the second support member through a threaded hole, the elastic member 240 is in a compression state and drives one of the first support member and the second support member with the through hole to be tightly abutted to the clamping joint 231, the length of the stud 232 supported between the first support member and the second support member can be adjusted by adjusting the depth of the stud 232 screwed into the threaded hole, the adjustment of the supporting length of the adjusting assembly 20 is further realized, and the adjustment of the compression amount of the elastic member 240 can also be realized. When pre-load is applied to the tire mold, the elastic member 240 will continue to be compressed, so that the pre-load can be controlled within a certain range, and damage to the mold due to excessive pre-load is reduced or even avoided. In addition, after the middle sleeve is worn, the pre-load avoiding gap value can be adjusted by adjusting the length between the first supporting piece and the second supporting piece, the pre-load can be controlled within a certain range, and the service life of the die is prolonged. In addition, the first receiving groove 131 is configured to receive the snap joint 231, so as to reduce interference between the snap joint 231 and the formwork assembly 10, thereby ensuring effective abutting support of the first supporting member and the second supporting member with the upper ring 110 and the middle sleeve 120.

Besides the above forms, optionally, as shown in fig. 6, the adjusting member may further include an elastic member 240, a threaded member 230 and a nut 250, where the threaded member 230 includes a snap joint 231 and a stud 232 fixedly connected to the snap joint 231, the first support member and the second support member are both provided with through holes, the through holes are preferably smooth holes, the stud 232 passes through the two through holes to be connected with the nut 250 in a matching manner, and the snap joint 231 is snapped on the edge of the through hole; the elastic member 240 is supported between the first support member and the second support member; the shuttering assembly 10 has a first receiving slot 131 for receiving the fastening head 231; or, one of the first support member and the second support member, which corresponds to the card connector 231, is provided with a first accommodating groove 131 for accommodating the card connector 231; the shuttering assembly 10 is provided with a second receiving groove for receiving the nut 250; or, one of the first support member and the second support member corresponding to the nut 250 is provided with a second receiving groove for receiving the nut 250. The clamping head 231 limits one end of the stud 232, the nut 250 limits the other end of the stud 232, the length of the stud 232 supported between the first supporting piece and the second supporting piece can be adjusted by adjusting the screwing depth of the stud 232 into the nut 250, the supporting length of the adjusting assembly 20 can be adjusted, and the compression amount of the elastic piece 240 can also be adjusted. When pre-load is applied to the tire mold, the elastic member 240 will continue to be compressed, so that the pre-load can be controlled within a certain range, and damage to the mold due to excessive pre-load is reduced or even avoided. In addition, after the middle sleeve is worn, the pre-load avoiding gap value can be adjusted by adjusting the length between the first supporting piece and the second supporting piece, the pre-load can be controlled within a certain range, and the service life of the die is prolonged. In addition, the first receiving groove 131 is configured to receive the snap joint 231, and the second receiving groove is configured to receive the nut 250, so as to reduce interference between the snap joint 231 and the nut 250 with the formwork assembly 10, thereby ensuring effective abutting support of the first and second supporting members with the upper ring 110 and the middle sleeve 120.

Optionally, in this embodiment, as shown in fig. 2, 5 and 6, one of the first support and the second support includes a cover 210 opening toward the other, and the other includes a sliding block 220, and the sliding block 220 is slidably inserted into the cover 210; the elastic member 240 is supported between the cap 210 and the sliding block 220. Here, as shown in fig. 2, the screw member 230 is a bolt, a bolt head of the bolt is used as the snap joint 231, a screw rod is used as the stud 232, the sleeve cover 210 is located above the sliding block 220, the sleeve cover 210 is provided with a through hole, the sliding block 220 is provided with a threaded hole, and the screw rod of the bolt passes through the through hole from top to bottom to be in threaded connection with the threaded hole; the upper ring 110 is provided with a first receiving groove 131 for receiving a bolt head to ensure the top surface of the cap 210 to abut against the bottom of the first groove 111; similarly, the groove bottom of the second groove body 121 may be provided with an avoiding groove 133, and the avoiding groove 133 is used for avoiding the portion of the screw insertion end extending out of the threaded hole, so as to ensure the abutment of the bottom surface of the sliding block 220 and the groove bottom of the second groove body 121, and further ensure the effective support of the adjusting assembly 20 on the upper ring 110 and the middle sleeve 120. When the adjusting screw is screwed into the depth of the threaded hole, the sliding block 220 slides along the axial direction of the sleeve cover 210, and on the basis of length adjustment of the screw connected between the sleeve cover 210 and the sliding block 220, the sleeve cover 210 guides the sliding position of the sliding block 220, so that the connecting position precision between the sleeve cover 210 and the sliding block 220 is improved, and the adjusting precision of the supporting height of the adjusting assembly 20 is correspondingly improved.

Preferably, as shown in fig. 2, the first receiving groove 131 penetrates through the upper ring 110, which can reduce the processing difficulty, and if necessary, the operator can also directly adjust the depth of the bolt screwed into the threaded hole through the first receiving groove 131, so as to further improve the convenience of the tire mold.

As shown in fig. 5, the screw member 230 is a bolt, the cover 210 is located below the sliding block 220, the bottom surface of the cover 210 abuts against the groove bottom of the second groove 121, and the top surface of the sliding block 220 abuts against the groove bottom of the second groove 121; the second groove body 121 has a first receiving groove 131 for receiving a bolt head at a groove bottom, and the first groove body 111 has an avoiding groove 133 for avoiding a portion of the screw insertion end extending out of the sliding block 220 at a groove bottom. As shown in fig. 6, the adjusting member includes a bolt and a nut 250, through holes are formed in the sleeve cover 210 and the sliding block 220, and a first receiving groove 131 for receiving a bolt head is formed in the sliding block 220.

Alternatively, the screw member 230 may be a double-threaded screw and at least two nuts, which are respectively screwed with the two ends of the screw to limit the two ends of the screw, besides the above-mentioned bolt.

As shown in fig. 3, a scale 221 may be provided on an outer side wall of the sliding block 220. When an operator adjusts the depth of the screw rod screwed into the threaded hole or the nut 250, the sliding block 220 slides along the axial direction of the sleeve cover 210, correspondingly, the opening end of the sleeve cover 210 corresponds to different scales 221 on the sliding block 220, the scales 221 correspond to the supporting height of the adjusting assembly 20, the operator can directly realize the adjustment of the supporting height of the adjusting assembly 20 through the recognition of the scales 221, and therefore the adjusting convenience and the adjusting precision of the adjusting assembly 20 are improved.

Specifically, in the present embodiment, the elastic member 240 may include a spring, and the spring is sleeved on the column of the stud 232 between the first support and the second support. Here, in a specific form of the elastic member 240, the spring is sleeved on the stud 232, and the spring is in a compressed state, and applies its own elastic force to the first support member and the second support member, so as to ensure that the distance between the first support member and the second support member can be changed corresponding to the length adjustment of the stud 232; the studs 232 can define the position at which the spring is mounted between the first and second supports, thereby reducing the occurrence of the spring being dislodged from the adjustment assembly 20 and ensuring a driving action of the spring on the first and second supports. Specifically, the spring may be a coil spring or a disc spring; besides the above-mentioned spring, the elastic member 240 may also be a resilient sheet or other member capable of deforming and pressing the first and second supporting members outward.

In this embodiment, an adjusting washer 260 may be further sleeved on the column of the stud 232 between the first support member and the second support member, and one end of the spring abuts against the adjusting washer 260, the elastic force of the elastic member 240 is within a certain range, and the adjusting washer 260 is disposed between the first support member and the second support member, so that the range of the overall supporting height of the adjusting assembly 20 is increased, and the increased size is the thickness value of the adjusting washer 260, if the adjusting range of the supporting height is a ~ b when the adjusting assembly 20 is not installed with the adjusting washer 260, and the thickness of the adjusting washer 260 is c, after the adjusting washer 260 is installed, the adjusting range of the supporting height of the adjusting assembly 20 is a + c ~ b + c, the adjusting range of the supporting height of the adjusting assembly 20 can be changed by the setting of the adjusting washer 260, and an operator can select an adjusting washer 260 with a proper thickness to be installed in the adjusting assembly 20 according to actual needs, thereby greatly improving the applicability of the adjusting assembly 20 and correspondingly improving.

In this embodiment, the size of the pre-load avoidance gap is set to t, the thickness of the pre-load convex portion is set to h, and t is not less than h. Because the upper ring 110 is pressed by the pressing acting force of the vulcanizing machine pressing assembly (including the hot plate), the adjusting assembly 20 is extruded, the elastic part 240 is deformed under the stress, the supporting height of the adjusting assembly 20 is reduced, the upper ring 110 moves close to the middle sleeve 120, t is not less than h, the stroke of the downward movement of the upper ring 110 is t, so that the pre-pressing convex part can be completely pressed, the holding force of the pattern block 170 is correspondingly ensured, and the hot plate and the upper cover of the mold are ensured to be attached to improve the heat transfer efficiency.

In this embodiment, the adjusting assembly 20 can be a plurality of adjusting assemblies 20, and the plurality of adjusting assemblies 20 are arranged at intervals along the circumference of the upper ring 110. During ballasting, a plurality of adjusting component 20 can support the different positions of upper ring 110 circumference simultaneously to improve each regional centering cover 120 of upper ring 110 and then to the equilibrium of the pattern block 170 transmission effort, reduce the local pattern block 170 and hold the power greatly, and the local pattern block 170 holds the emergence of the less circumstances of power.

In this embodiment, the tire mold may further include a connecting member 190, the connecting member 190 is connected between the upper ring 110 and the middle sleeve 120, and the upper ring 110 is capable of being axially displaced relative to the middle sleeve 120. The connecting member 190 connects the upper ring 110 and the middle sleeve 120 together to reduce the occurrence of the situation that the upper ring 110 falls off from the middle sleeve 120 under the supporting action of the adjusting assembly 20, and the upper ring 110 can axially displace relative to the middle sleeve 120 to ensure the pre-load displacement of the upper ring 110; in addition, the connecting member 190 can also guide the up-and-down movement of the upper ring 110, thereby further improving the displacement accuracy of the pre-load of the upper ring 110. Optionally, as shown in fig. 4, the connecting member 190 may be a shoulder screw, the shoulder screw includes a head 191, a shoulder section 192 and a threaded section 193, the shoulder section 192 is connected between the head 191 and the threaded section 193, the threaded section 193 passes through the through hole 113 of the upper ring 110 to be in threaded connection with the middle sleeve 120, the upper ring 110 is sleeved on the shoulder section 192 of the shoulder screw and can slide along the smooth outer wall of the shoulder section 192 to ensure the pre-load displacement of the upper ring 110; under the connecting action of the shoulder screw, a certain gap value can be set between the upper end surface of the upper ring 110 and the screw head 191, and preferably, the upper end surface of the upper ring 110 is tightly pressed against the screw head 191; optionally, the upper ring 110 may be provided with a groove 112, and when the shoulder screw is screwed into the middle sleeve 120, the head 191 of the shoulder screw can be inserted into the groove 112, so as to reduce the occurrence of the influence of the protrusion of the connecting member 190 on the usage of the tire mold.

The connecting member 190 may be a common screw or a flexible member, except for a shoulder screw, when the connecting member 190 is a flexible member, two ends of the flexible member are respectively connected to the upper ring 110 and the middle sleeve 120, and the length of the flexible member connected between the upper ring 110 and the middle sleeve 120 is not less than the pre-load gap t; in particular, the flexible member may be a cord or the like.

Alternatively, the connecting member 190 may be plural, and the plural connecting members 190 are spaced apart from each other in the circumferential direction of the upper ring 110. The plurality of coupling members 190 couple different portions of the upper ring 110 and the middle sleeve 120, thereby improving the coupling strength between the upper ring 110 and the middle sleeve 120. Preferably, the plurality of connecting members 190 and the plurality of adjusting assemblies 20 are staggered along the circumference of the upper ring 110 to improve the force uniformity of the upper ring 110 and the connecting members 190.

Alternatively, the mounting steps may be as follows: adjusting the supporting height of the adjusting component 20 on line according to the requirement of the pre-pressing loading amount; mounting the adjustment assembly 20 between the upper ring 110 and the middle sleeve 120 of the formwork assembly 10; ballasting the upper ring 110, threading the shoulder screws through the through holes 113 of the upper ring 110 and into the middle sleeve 120 (preferably, the upper ring 110 abuts against the heads 191 of the shoulder screws), releasing the ballast, or tightening the shoulder screws when the ballast is not provided; and (5) mounting the tire mold on a vulcanizing machine for vulcanizing the tire.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A tire mold comprising a formwork assembly (10) and an adjustment assembly (20), the formwork assembly (10) comprising an upper ring (110) and a middle sleeve (120), the adjustment assembly (20) comprising a first support, a second support, and an adjustment member for adjusting a spacing between the first support and the second support;

the first supporting piece is abutted with the upper ring (110), the second supporting piece is abutted with the middle sleeve (120), a pre-load avoiding gap is formed between the upper ring (110) and the middle sleeve (120), and a pre-load convex part is formed at the top of the upper ring (110).

2. A tyre mould as claimed in claim 1, characterized in that said shuttering assembly (10) is provided with a receiving groove in which said adjusting assembly (20) is received;

and/or the size of the pre-load avoiding gap is t, the thickness of the pre-load convex part is h, and t is more than or equal to h.

3. The tire mold of claim 2, wherein the receiving groove comprises a first groove (111) and a second groove (121), the first groove (111) is disposed on the bottom surface of the upper ring (110) and has a downward opening, and the second groove (121) is disposed on the top surface of the middle sleeve (120) and has an upward opening.

4. A tyre mould as claimed in claim 2, characterized in that said adjustment assembly (20) is clearance-fitted with said receiving groove.

5. The tire mold of claim 1, wherein the adjusting member comprises an elastic member (240) and a threaded member (230), the threaded member (230) comprises a snap joint (231) and a stud (232) fixedly connected to the snap joint (231), one of the first support member and the second support member is provided with a through hole, the other support member is provided with a threaded hole, the stud (232) penetrates through the through hole to be in threaded connection with the threaded hole, and the snap joint (231) is snapped at the edge of the through hole; the elastic member (240) is supported between the first support and the second support;

the formwork component (10) is provided with a first accommodating groove (131) for accommodating the clamping joint (231); or one of the first support and the second support provided with the through hole is provided with a first accommodating groove (131) for accommodating the clamping head (231).

6. The tire mold according to claim 1, wherein the adjusting member comprises an elastic member (240), a threaded member (230) and a nut (250), the threaded member (230) comprises a snap joint (231) and a stud (232) fixedly connected to the snap joint (231), the first support member and the second support member are provided with through holes, the stud (232) passes through the two through holes to be in fit connection with the nut (250), and the snap joint (231) is snapped at the edge of the through holes; the elastic member (240) is supported between the first support and the second support;

the formwork component (10) is provided with a first accommodating groove (131) for accommodating the clamping joint (231); or, one of the first support and the second support corresponding to the clamping head (231) is provided with a first accommodating groove (131) for accommodating the clamping head (231);

the formwork component (10) is provided with a second accommodating groove for accommodating the nut (250); or, one of the first support member and the second support member corresponding to the nut (250) is provided with a second accommodating groove for accommodating the nut (250).

7. A tyre mould as claimed in claim 5 or 6, characterized in that one of said first support and said second support comprises a cover (210) open towards the other, the other comprising a sliding block (220), said sliding block (220) being slidingly inserted in said cover (210); the elastic piece (240) is supported between the sleeve cover (210) and the sliding block (220);

and/or a cylinder of the stud (232) between the first support and the second support is sleeved with an adjusting washer (260), and one end of the elastic piece (240) is abutted to the adjusting washer (260).

8. Mould according to claim 7, wherein the outer side wall of said sliding block (220) is provided with graduations (221).

9. Tyre mould according to any one of claims 1 to 6, characterized in that it further comprises a connecting member (190), said connecting member (190) being connected between said upper ring (110) and said intermediate sleeve (120), and said upper ring (110) being axially displaceable with respect to said intermediate sleeve (120).

10. The tire mold of claim 9, wherein the connector (190) comprises a shoulder screw comprising a threaded head (191), a threaded section (193), and a shoulder section (192) connected therebetween; the upper ring (110) is provided with a through hole (113) along the axial direction, the thread section (193) penetrates through the through hole (113) to be in threaded connection with the middle sleeve (120), and the through hole (113) is slidably sleeved on the shaft shoulder section (192).