Tire mold insert assembly structure and application method thereof

Abstract

The invention relates to the technical field of molds, and provides a tire mold insert assembly structure and an application method thereof.The tire mold insert assembly structure comprises a shaping frame, an insert and an expansion piece, the shaping frame is composed of a plurality of single frames in a circular array, and each single frame is provided with a mounting hole; the insert is inserted into the mounting hole, one end of the insert abuts against the inner wall of the shaping frame, and the other end of the insert extends to the outer side of the shaping frame and is provided with a limiting part; the expansion piece is located on the outer side of the shaping frame, is of an annular structure and is used for applying force away from the center of the shaping frame to the limiting part, so that the insert and the shaping frame are relatively fixed. A plurality of single frames are arranged to form the shaping frame, and the mounting holes are formed in the single frames, so that the mounting of the inserts can be realized, the mold can be used for producing tires of different models by replacing the inserts with different patterns, the whole mold does not need to be reset, and the production efficiency is improved while the product meets the updating requirement. And the mold opening cost is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a tire mold insert assembly structure and an application method thereof. Background Art

[0002] The tire mold is a special mold used for tire molding. It is usually set as a split structure to facilitate assembly and molding. The inside of the mold is provided with a tire pattern. After the tire blank is placed in the mold, the tire mold is heated and the tire blank is squeezed to shape the tire, so that the tire will have a corresponding pattern.

[0003] The invention patent application with the existing application publication number CN118906323A discloses an active mold that does not produce main groove tread rubber edges. The active mold includes a tread ring, an upper side plate and a lower side plate. The upper side plate is arranged above the tread ring, and the lower side plate is arranged below the tread ring. When the tread ring moves into a mold closing state, the tread ring, the upper side plate and the lower side plate are closed to form an annular mold cavity that can be used to vulcanize the tire blank. The tread ring is composed of a plurality of tread blocks.

[0004] For example, the tire mold in the above technical solution is provided with a plurality of pattern blocks, and is composed of an upper side plate and a lower side plate. Since the shape of the pattern blocks is single, the shape of the tire that can be prepared is also single, and the versatility is poor. With the rapid development of the automobile industry, the performance requirements of automobiles on tires are constantly improving, and the tire pattern styles are updated and iterated very quickly. Among tire molds, the proportion of updates due to wear and tear accounts for about 20%, and about 80% of tire molds are eliminated due to outdated patterns. Therefore, how to reduce the finished mold products to prepare tires with new pattern styles has become an urgent problem to be solved. Summary of the invention

[0005] In view of this, the present invention proposes a tire mold insert assembly structure with a modular structure and replaceable inserts and an application method thereof, so as to solve the problem of single pattern shape of existing molds, thereby adapting to the production of fast iterative products.

[0006] The technical solution of the present invention is achieved in this way:

[0007] In one aspect, the present invention provides a tire mold insert assembly structure, comprising a molding frame, an insert and a tightening member, wherein:

[0008] The shaping frame is composed of a plurality of single frames arranged in a circular array, and each single frame is provided with a mounting hole;

[0009] The insert is inserted into the mounting hole, one end of the insert abuts against the inner wall of the forming frame, and the other end extends to the outside of the forming frame and is provided with a limiting portion;

[0010] The expansion piece is located outside the forming frame and has a ring-shaped structure. The expansion piece is used to apply a force away from the center of the forming frame to the limiting part so that the insert and the forming frame are relatively fixed.

[0011] On the basis of the above technical solution, preferably, it further comprises a connecting piece, and the insert comprises a middle insert, a side insert and a stopper, wherein:

[0012] The middle insert and the side insert are inserted into the mounting hole, and one side insert is respectively arranged on the upper side and the lower side of the middle insert;

[0013] The middle insert and the side insert have one end located in the forming frame as a forming end and abut against the inner wall of the forming frame;

[0014] The middle insert and the side insert are connected to each other through a connecting piece at one end located outside the forming frame;

[0015] The stopper is a limiting part, which is arranged on the side insert and abuts against the expansion piece.

[0016] On the basis of the above technical solution, preferably, the connecting piece is a rectangular frame structure, the middle insert includes a first forming block and a first connecting block, and the side insert includes a second forming block and a second connecting block, wherein,

[0017] The first forming block is inserted into the mounting hole and abuts against the inner wall of the forming frame;

[0018] The first connecting block is detachably connected to the first forming block and extends to the outside of the forming frame;

[0019] The second forming block is inserted into the mounting hole and abuts against the inner wall of the forming frame;

[0020] The second connecting block is detachably connected to the second forming block and extends to the outside of the forming frame, and the stopper is arranged on the second connecting block;

[0021] The connecting piece is connected to the first connecting block and abuts against an end of the second connecting block away from the second forming block.

[0022] On the basis of the above technical solution, preferably, the stopper is spaced apart from the shaping frame, and a first curved surface and a second curved surface are provided on a side of the stopper facing the shaping frame;

[0023] The first curved surface is concentric with the shaping frame and forms a first wall thickness for the stopper, and the second curved surface is eccentrically arranged and connected with the first curved surface and forms a second wall thickness for the stopper, and the second wall thickness is smaller than the first wall thickness;

[0024] The expansion piece is slidably matched with the forming frame. The outer ring surface of the expansion piece is provided with a concentric section fitting the first curved surface and an expansion section fitting the second curved surface. The inner ring surface of the expansion piece fits the forming frame.

[0025] On the basis of the above technical solution, preferably, it further includes a connecting plate, a conduit and a limiting strip, wherein:

[0026] The connecting plate has a forming ring and a positioning ring, and the forming ring abuts against the inner wall surface of the forming frame and the side surface of the second forming block;

[0027] The positioning ring is arranged on the outer peripheral surface of the forming ring and is in contact with the end surface of the forming frame;

[0028] A through hole is provided on the shaping frame, the catheter and the positioning ring are arranged as an integrated structure, the catheter passes through the positioning ring and is inserted into the through hole;

[0029] One end of the limiting strip is connected to the forming ring, and the other end is inserted between two adjacent inserts.

[0030] On the basis of the above technical solution, preferably, the width of the first forming block, the first connecting block, the second forming block and the second connecting block inserted in the mounting hole is smaller than the width of the mounting hole, and two limiting bars are provided and inserted at the connection of three adjacent inserts; or,

[0031] The first forming block, the first connecting block, the second forming block and the second connecting block, the parts inserted in the mounting holes, have widths equal to the width of the mounting holes. The number of the limiting strips corresponds to the number of the inserts, and each limiting strip is inserted between two adjacent inserts.

[0032] On the basis of the above technical solution, preferably, it further includes a connecting ring, a connecting rod and a pressure ring, the upper and lower sides of the insert are provided with limiting parts, and the expansion member is provided with two corresponding limiting parts, wherein,

[0033] A connecting ring is provided on each of the two expansion members;

[0034] Both ends of the connecting rod are connected to a connecting ring respectively;

[0035] The pressure ring is connected to the connecting ring and is slidably matched with the connecting plate.

[0036] On the basis of the above technical solution, preferably, the thickness of the expansion member is greater than the thickness of the stopper, and the connecting rod includes a rod body and a limit plate, wherein:

[0037] One end of the rod body is connected to the surface of one of the connecting rings, and the surface of the connecting ring is connected to one of the expansion members;

[0038] The limiting plate is arranged on the rod body, and the other end of the rod body passes through another connecting ring, and another expansion member and the limiting plate abut against the same surface of the connecting ring.

[0039] On the basis of the above technical solution, preferably, it further comprises a driving member, a plurality of single frames are arranged as an integrated structure to form a shaping frame, and a protrusion is arranged on the shaping frame;

[0040] The driving member is arranged on the protruding portion, and the movable end of the driving member is connected to the connecting rod.

[0041] On the other hand, the present invention provides an application method of the tire mold insert assembly structure, comprising the following steps:

[0042] S1. Install two side inserts in the mounting holes, then slide and separate the two side inserts, and make the stoppers correspond to the outer wall of the forming frame;

[0043] S2, inserting the middle insert between the two side inserts to expand the two side inserts to achieve the connection between the insert and the forming frame;

[0044] S3, connecting and fixing the middle insert and the end of the side insert outside the forming frame through a connecting piece;

[0045] S4, assembling the expansion member on the shaping frame, and then driving the expansion member to rotate with the driving member, so that the expansion section rotates toward the first curved surface, and then cooperates with the shaping frame to expand and fix the insert.

[0046] The tire mold insert assembly structure and application method of the present invention have the following beneficial effects compared with the prior art:

[0047] (1) A plurality of single frames are provided to form a shaping frame, and mounting holes are provided on the single frames, so that the inserts can be installed. By replacing inserts with different patterns, the mold can produce tires of different models without having to reset the entire mold. This effectively reduces the mold opening cost while making the product meet the requirements of the replacement.

[0048] (2) In the tire mold insert assembly structure, a plurality of inserts are uniformly fixed by a tightening member, which can tighten the outer end of the insert, while the inner end of the insert stably abuts against the forming frame, thereby improving the convenience of insert fixation, reducing the number of disassembly and assembly operations of fasteners during disassembly and assembly, and simplifying the assembly process;

[0049] (3) A single insert is composed of a middle insert, a side insert and a stopper, wherein the stopper is arranged on the side insert, and the middle insert is also connected and fixed to the side insert through a connecting piece. Therefore, the entire insert can be fixed and installed simply by tightening the stopper through an expansion piece, which is very convenient to operate;

[0050] (4) The expansion piece is provided as an annular structure and is provided with a concentric section and an expansion section, and the stopper is adapted to be provided with a first curved surface and a second curved surface, so that by relying on the movement of the expansion section, a force away from the center of the forming frame can be applied to the insert to ensure stable installation of the insert; at the same time, the inner annular surface of the expansion piece fits the forming frame, so that it can cooperate with the concentric section to achieve stable connection and cooperation with the monomer frame and the insert;

[0051] (5) By providing a connecting plate, the forming ring and the insert can be used to form the tire, and the positioning ring is used to install the conduit, and the conduit is plugged into the through hole on the shaping frame, which can realize the relative positioning and connection of several single frames, which is conducive to ensuring the stability of the structure; at the same time, the conduit is used to allow the hot air flow to flow through the single frame, and then transfer the heat to the insert and the connecting plate, so as to realize the heating and forming of the tire;

[0052] (6) The rod body is connected to two connecting rings, which can ensure the stability of the position of the expansion piece. A pressure ring is provided on the connecting ring, which can be pressed on the connecting plate and slidably fitted. This is conducive to ensuring the stability of the position of the connecting plate, and then ensuring the stability of the fit between the conduit and the through hole, so that the whole has a stable working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A three-dimensional diagram of the tire mold insert assembly structure of the present invention;

[0055] Figure 2 It is a front view of the tire mold insert assembly structure of the present invention;

[0056] Figure 3 For the present invention Figure 2 Middle AA section view;

[0057] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A;

[0058] Figure 5 It is a disassembly structure diagram of the connecting plate and the connecting ring of the tire mold insert assembly structure of the present invention;

[0059] Figure 6 An exploded view of the tire mold insert assembly structure of the present invention;

[0060] Figure 7A diagram showing the assembly structure of a single frame and inserts of a tire mold insert assembly structure of the present invention;

[0061] Figure 8 It is a block structure diagram of the tire mold block assembly structure of the present invention;

[0062] Fig. 9 A diagram showing the matching structure of the connector and the insert of the tire mold insert assembly structure of the present invention;

[0063] Fig.10 It is a schematic diagram of another connecting member structure of the tire mold insert assembly structure of the present invention;

[0064] Fig.11 A diagram showing a single frame and a disassembly structure of a tire mold insert assembly structure of the present invention;

[0065] Fig.12 A schematic diagram of the block structure of the tire mold insert assembly structure of the present invention;

[0066] Fig.13 It is a structural diagram of the expansion member installation of the tire mold insert assembly structure of the present invention;

[0067] Fig.14 For the present invention Fig.13 The structure of point B is enlarged;

[0068] Fig.15 It is a cross-sectional view of the matching structure of the insert and the limiting strip of the tire mold insert assembly structure of the present invention;

[0069] Fig.16 A diagram showing a tire mold insert assembly structure of the present invention in which multiple monomer frames are arranged as an integrated structure;

[0070] Fig.17 A cross-sectional view showing a plurality of monolithic frames of the tire mold insert assembly structure of the present invention arranged as an integrated structure;

[0071] Fig.18 It is a schematic diagram of the interference structure of the first molding block of the tire mold insert assembly structure of the present invention;

[0072] Fig.19 It is a schematic diagram of the first molding block disengaging structure after the limiting strip is set in the tire mold insert assembly structure of the present invention;

[0073] Fig. 20 A three-dimensional diagram of a tire mold insert assembly structure of the present invention provided with multiple limit strips;

[0074] Fig.21 The second embodiment of the tire mold insert assembly structure of the present invention is a schematic diagram of the first molding block release structure. Figure 1 ;

[0075] Fig. 22 The second embodiment of the tire mold insert assembly structure of the present invention is a schematic diagram of the first molding block release structure. Figure 2 ;

[0076] Fig.23 It is a diagram showing the matching structure of the driving member, the shaping frame and the connecting rod of the tire mold insert assembly structure of the present invention;

[0077] In the figure: 1, shaping frame; 11, single frame; 12, protrusion; 101, mounting hole; 102, through hole; 2, insert; 21, middle insert; 211, first forming block; 212, first connecting block; 22, side insert; 221, second forming block; 222, second connecting block; 23, stopper; 2301, first curved surface; 2302, second curved surface; 3, expansion member; 31, concentric section; 32, expansion section; 4, connecting member; 5, connecting plate; 51, forming ring; 52, positioning ring; 6, conduit; 7, limit strip; 8, connecting ring; 9, connecting rod; 91, rod body; 92, limit plate; 10, pressure ring; 13, driving member. DETAILED DESCRIPTION

[0078] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0079] like Figure 1 to Figure 23 As shown, the mold insert assembly structure of the present invention includes a forming frame 1, an insert 2, a tightening member 3, a connecting member 4, a connecting plate 5, a conduit 6, a limit strip 7, a connecting ring 8, a connecting rod 9, a pressure ring 10 and a driving member 13.

[0080] like Figure 1 to Figure 6 As shown, the shaping frame 1 is composed of a plurality of single frames 11 in a circular array, and each single frame 11 is provided with a mounting hole 101; the insert 2 is inserted into the mounting hole 101, one end of the insert 2 abuts against the inner wall of the shaping frame 1, and the other end extends to the outside of the shaping frame 1, and a limiting portion is provided; the expansion member 3 is located on the outside of the shaping frame 1, and the expansion member 3 is an annular structure, and the expansion member 3 is used to apply a force away from the center of the shaping frame 1 to the limiting portion, so that the insert 2 and the shaping frame 1 are relatively fixed;

[0081] As described above, in the structure of the shaping frame 1, a plurality of single frames 11 are provided, and the insert 2 is assembled in the mounting hole 101 of the single frame 11. After the plurality of single frames 11 are arranged in a circular array, a chamber for shaping the tire is formed;

[0082] In order to improve the convenience of fixing the insert 2, one end of the insert 2 located in the shaping frame 1 abuts against the inner wall of the shaping frame 1, and the other end extends to the outside of the shaping frame 1 and is provided with a limiting portion;

[0083] The expansion member 3 is set as an annular structure, so that the expansion member 3 can be mounted on the shaping frame 1 composed of a plurality of single frames 11, and exerts a thrust on the limiting portion of the insert 2, so that the insert 2 obtains a force away from the center of the shaping frame 1, so that one end of the insert 2 located in the shaping frame 1 can stably abut against the inner wall of the shaping frame 1 to achieve connection and fixation;

[0084] The arrangement of this structure relies on the expansion member 3 to lock and fix all the inserts 2, effectively improving the convenience of disassembly and assembly;

[0085] In this structure, the insert 2 is installed in the mounting hole 101 of the single frame 11. In this way, by replacing the insert 2 with different patterns, the mold can produce tires of different models. It is only necessary to open the mold for the insert 2 without re-setting the entire mold. While making the product adapt to the replacement requirements, the mold opening cost is effectively reduced.

[0086] like Fig.16 and Fig.17 As shown, in some embodiments, all the single frames 11 are integrally formed to form a whole, and a plurality of mounting holes 101 are provided to reduce the number of components.

[0087] like Figure 7~Figure 11 As shown, the insert 2 includes a middle insert 21, a side insert 22 and a stopper 23, wherein the middle insert 21 and the side insert 22 are inserted into the mounting hole 101, and the side insert 22 is provided with one on the upper side and one on the lower side of the middle insert 21; the middle insert 21 and the side insert 22, one end of which is located inside the shaping frame 1 is a forming end, and abuts against the inner wall of the shaping frame 1; the middle insert 21 and the side insert 22, one end of which is located outside the shaping frame 1 is connected to each other through a connecting member 4; the stopper 23 is a limiting portion, which is provided on the side insert 22 and abuts against the expansion member 3;

[0088] As in the above structure, a pattern is provided on the insert 2 to form a pattern on the tire surface. In order to optimize the fixing structure and improve the versatility, the single insert 2 is divided into a middle insert 21 and two side inserts 22. When connected with the single frame 11, the middle insert 21 and the side insert 22 are both inserted into the mounting hole 101 and connected to form an integrated structure through the connecting piece 4.

[0089] In this way, when the insert 2 is fixed, the expansion member 3 applies an expansion force to the stopper 23, so that the insert 2 can be connected and fixed to the forming frame 1 as a whole, which has the advantage of convenient assembly.

[0090] Among them, one end of the middle insert 21 and the side insert 22 located in the shaping frame 1 is the shaping end, and the width of this part is larger than the other end, so that it can be inserted from the inner side of the shaping frame 1 and abut against the inner wall surface of the shaping frame 1;

[0091] The arrangement of this structure further differentiates the pattern composition. In some embodiments, only one of the middle insert 21 or the side insert 22 may be replaced to form a new pattern structure.

[0092] like Fig. 9 As shown, the connecting member 4 is a rectangular frame structure, the middle insert 21 includes a first forming block 211 and a first connecting block 212, and the side insert 22 includes a second forming block 221 and a second connecting block 222, wherein the first forming block 211 is inserted into the mounting hole 101 and abuts against the inner wall of the shaping frame 1; the first connecting block 212 is detachably connected to the first forming block 211 and extends to the outside of the shaping frame 1; the second forming block 221 is inserted into the mounting hole 101 and abuts against the inner wall of the shaping frame 1; the second connecting block 222 is detachably connected to the second forming block 221 and extends to the outside of the shaping frame 1, and the stopper 23 is arranged on the second connecting block 222; the connecting member 4 is connected to the first connecting block 212 and abuts against one end of the second connecting block 222 away from the second forming block 221;

[0093] As described above, the middle insert 21 is composed of a first forming block 211 and a first connecting block 212, and the side insert 22 is composed of a second forming block 221 and a second connecting block 222;

[0094] Specifically, the second forming block 221 and the second connecting block 222 are fixedly connected by bolts. When assembled with the mounting hole 101, they can be directly inserted, and the two side inserts 22 are inserted into the mounting hole 101 and relatively separated to leave a mounting position for the middle insert 21.

[0095] The first forming block 211 and the first connecting block 212 are also fixedly connected by bolts. When installing the middle insert 21, the first forming block 211 is inserted from the inner side of the shaping frame 1 between the two side inserts 22, and then the first connecting block 212 is inserted from the outer side, and the first connecting block 212 is connected and fixed to the first forming block 211.

[0096] In this way, the inner ends of the first forming block 211 and the second forming block 221 will both abut against the inner wall of the forming frame 1, and at the same time, the stopper 23 on the second connecting block 222 will correspond to the expansion member 3, and the connecting member 4 on the first connecting block 212 will abut against the second connecting blocks 222 of the two side inserts 22. When the expansion member 3 applies a tightening force to the stopper 23, it will be transmitted to the side inserts 22 and the middle insert 21 at the same time, so as to achieve overall fixation;

[0097] When disassembling, the first connecting block 212 and the first forming block 211 are first separated, and then the first connecting block 212 and the first forming block 211 are taken out separately, leaving space for taking out the side insert 22. The second forming block 221 and the second connecting block 222 of the side insert 22 do not need to be separated and can be directly taken out from the inner side of the shaping frame 1, which has the advantage of convenient disassembly and assembly.

[0098] like Fig.10 As shown, in some embodiments, the connecting member 4 does not adopt a rectangular frame structure, but a connecting plate is provided on one end of the middle insert 21 and the side insert 22 located outside the shaping frame 1, and is connected and fixed in series with bolts, so that when disassembling, the middle insert 21 and the side insert 22 can be directly taken out after removing the bolts;

[0099] like Fig.11 As shown, when bolts are used to connect the middle insert 21 and the side insert 22, if disassembly is required, the middle insert 21 is first pulled out, and then the side insert 22 is pulled out.

[0100] like Figure 7 , Figure 12~Figure 14 As shown, the stopper 23 is spaced from the shaping frame 1, and the side of the stopper 23 facing the shaping frame 1 is provided with a first curved surface 2301 and a second curved surface 2302; the first curved surface 2301 is concentric with the shaping frame 1, and forms a first wall thickness for the stopper 23, and the second curved surface 2302 is eccentrically arranged, the second curved surface 2302 is connected with the first curved surface 2301, and forms a second wall thickness for the stopper 23, and the second wall thickness is less than the first wall thickness; the expansion member 3 is slidably matched with the shaping frame 1, and the outer annular surface of the expansion member 3 is provided with a concentric section 31 that fits the first curved surface 2301, and an expansion section 32 that fits the second curved surface 2302, and the inner annular surface of the expansion member 3 fits the shaping frame 1;

[0101] As in the above structure, the expansion member 3 adopts a cam-type expansion structure, and its expansion section 32 has a larger diameter than the concentric section 31; accordingly, the stopper 23 is provided with a first curved surface 2301 and a second curved surface 2302;

[0102] The first curved surface 2301 is concentrically arranged with the calibrating frame 1 and slidably cooperates with the concentric segment 31 of the expansion member 3. The second curved surface 2302 is connected with the first curved surface 2301 and cooperates with the expansion segment 32 of the expansion member 3. The wall thickness of the stopper 23 at the first curved surface 2301 is greater than the wall thickness at the second curved surface 2302. In this way, when the expansion member 3 rotates, the expansion segment 32 rotates toward the first curved surface 2301, which will apply a tightening force to the insert 2, and vice versa. After that, the expansion member 3 is removed, so that the insert 2 can be removed.

[0103] Specifically, the expansion member 3 is provided with a plurality of concentric segments 31 and expansion segments 32, so that all the inserts 2 can be fixed;

[0104] Specifically, the stopper 23 can be set as a special-shaped structure to increase the wall thickness where the second curved surface 2302 is set, so that the wall thickness of this part is consistent with the first curved surface 2301 of the stopper 23 to increase the structural stability.

[0105] like Figure 4 and Fig. 20 As shown, the connecting plate 5 has a forming ring 51 and a positioning ring 52. The forming ring 51 abuts against the inner wall surface of the shaping frame 1 and the side surface of the second shaping block 221; the positioning ring 52 is arranged on the outer peripheral surface of the forming ring 51 and fits the end surface of the shaping frame 1; a through hole 102 is opened on the shaping frame 1, and the conduit 6 and the positioning ring 52 are arranged as an integrated structure, and the conduit 6 passes through the positioning ring 52 and is inserted into the through hole 102;

[0106] As shown in the above structure, the connecting plate 5 has two parts: a forming ring 51 and a positioning ring 52. The forming ring 51 directly contacts the inner wall of the calibrating frame 1 and abuts against the insert 2. This part serves as a part of the mold forming cavity to cooperate with the insert 2 to complete the molding of the tire.

[0107] Specifically, the inner diameter of the molding ring 51 is set to fit the inner diameter of the molding frame 1 as much as possible, so as to improve the convenience of removing the tire after molding; the inner wall surface formed by the multiple inserts 2 is an annular surface, and the inner diameter of the molding ring 51 is smaller than the inner diameter of the annular surface, so as to achieve cooperation with the inserts 2, thereby assisting tire molding;

[0108] The positioning ring 52 is used for connection and assembly. The positioning ring 52 is provided with a conduit 6, and the shaping frame 1 is provided with a through hole 102. In this way, during assembly, the connecting plate 5 can be connected to the shaping frame 1 by plugging the conduit 6 into the through hole 102. In this positioning structure, a plurality of conduits 6 are provided. After plugging into the through hole 102, relative positioning of all the monomer frames 11 can be achieved, thereby ensuring structural stability.

[0109] The conduit 6 is used for hot air flow to heat the shaping frame 1, thereby promoting the shaping of the tire.

[0110] like Figure 5 , Figure 6 and Fig.15 As shown, one end of the limit strip 7 is connected to the forming ring 51, and the other end is inserted between two adjacent inserts 2;

[0111] As in the above structure, the limiting strip 7 is used to limit the filling of the insert 2 and to form a cavity for tire molding;

[0112] At the same time, the setting of the limiting strip 7 can further strengthen the relative limiting between the connecting plate 5, the insert 2 and the shaping frame 1, and further ensure the stability of the structure.

[0113] like Figure 8 , Fig.18 and Fig.19 As shown, the first forming block 211, the first connecting block 212, the second forming block 221 and the second connecting block 222 are inserted into the mounting hole 101, and the width is smaller than the width of the mounting hole 101. Two limiting strips 7 are provided and inserted into the connection of three adjacent inserts 2;

[0114] like Fig.18 As shown, it shows the interference structure of the insert 2. When the portion of the first forming block 211 inserted in the mounting hole 101 is as wide as the mounting hole 101, when the first forming block 211 is removed, there will be interference with the adjacent first forming block 211, and the same is true for the second forming block 221.

[0115] like Figure 5 , Fig.15 , Fig.21 and Fig. 22 As shown, if the width of the first molding block 211, the first connecting block 212, the second molding block 221 and the second connecting block 222 located in the mounting hole 101 is smaller than the width of the mounting hole 101, only two limit strips 7 are required. After removing the limit strips 7, the first molding block 211 and the second molding block 221 will have lateral sliding space, so that the inserts 2 with the limit strips 7 on both sides can be removed first, and then the other inserts 2 can be gradually removed from one side.

[0116] like Fig. 20 As shown, the first forming block 211, the first connecting block 212, the second forming block 221 and the second connecting block 222 are inserted in the mounting hole 101, and the width of the parts is equal to the width of the mounting hole 101. The number of the limiting strips 7 corresponds to the number of the inserts, and each limiting strip 7 is inserted between two adjacent inserts 2;

[0117] As in the above structure, the first molding block 211, the first connecting block 212, the second molding block 221 and the second connecting block 222 are located in the mounting hole 101. If the two sides abut against the inner wall of the mounting hole 101, the stability of the connection between the insert 2 and the forming frame 1 can be increased. However, when disassembling, the first molding block 211 and the second molding block 221 of the adjacent insert 2 may interfere with each other. At this time, it is necessary to set limit strips 7 on both sides of all the inserts 2 to avoid structural interference when the inserts 2 are removed.

[0118] like Figure 4 , Figure 5 and Fig.10As shown, both upper and lower sides of the insert 2 are provided with limiting parts, and two expansion members 3 are provided corresponding to the limiting parts, wherein one connecting ring 8 is provided on each of the two expansion members 3; both ends of the connecting rod 9 are connected to one connecting ring 8; the pressure ring 10 is connected to the connecting ring 8 and slidably cooperates with the connecting plate 5;

[0119] As in the above structure, in order to ensure the stability of the expansion member 3 in expanding the insert 2, both sides of the insert 2 are provided with a limit portion, i.e., a stopper 23, so that when fixing, a stable expansion force can be applied to the insert 2 by the two expansion members 3 to ensure the stability of the posture of the insert 2 and eliminate the small error of the assembly of the insert 2 and the shaping frame 1;

[0120] Specifically, a pressure ring 10 is further provided on the connecting ring 8, and the pressure ring 10 is used to press the connecting plate 5 and slide with the connecting plate 5, so that when the connecting ring 8 and the expansion member 3 rotate, the pressure ring 10 does not interfere with the connecting plate 5; at the same time, since the pressure ring 10 limits the connecting plate 5, the stability of the insertion of the conduit 6 and the through hole 102 can be ensured;

[0121] In some embodiments, the expansion member 3 on the upper side is directly connected to the connecting rod 9, and the pressure ring 10 is not provided on this side, and the connecting plate 5 is provided with a driving member such as a cylinder to drive it so that it can be buckled onto the shaping frame 1, or the connecting plate 5 can be opened, so that it is convenient to take out after the tire is formed, thereby improving the convenience of application;

[0122] In this embodiment, the conduit 6 is not provided, and the mold is placed in a heating furnace for tire molding to avoid wear between the conduit 6 and the through hole 102 caused by continuous opening and closing of the mold.

[0123] like Figure 4 As shown, the thickness of the expansion member 3 is greater than the thickness of the stopper 23, and the connecting rod 9 includes a rod body 91 and a limiting plate 92, wherein one end of the rod body 91 is connected to the surface of one of the connecting rings 8, and the surface of the connecting ring 8 is connected to one of the expansion members 3; the limiting plate 92 is arranged on the rod body 91, and the other end of the rod body 91 passes through another connecting ring 8, and another expansion member 3 and the limiting plate 92 abut against the same surface of the connecting ring 8;

[0124] As in the above structure, when the expansion piece 3 is set, its thickness is larger than the thickness of the stopper 23 on the insert 2. At the same time, a limit plate 92 is set on the connecting rod 9 used to connect the two connecting rings 8, so that when integrating, the surface of the connecting ring 8 can be prevented from contacting the stopper 23; when tightening and fixing, the connecting ring 8, the connecting rod 9 and the expansion piece 3 rotate synchronously. The setting of this structure can reduce wear, ensure that the stopper 23 has a sufficient groove depth to accommodate the expansion piece 3, and ensure the stability of the structural application;

[0125] Specifically, the rod body 91 of the connecting rod 9 can be set as an integral structure with one of the connecting rings 8 at one end, and the other end can be fixedly connected to the other connecting ring 8 through a nut, or both ends can be connected to one connecting ring 8 through a nut to achieve a detachable structure;

[0126] Specifically, during operation, the connecting plate 5 is used as a positioning member and is connected to a fixing device such as a base to achieve circumferential positioning of the forming frame 1, so that the connecting ring 8, the connecting rod 9 and the expansion member 3 can rotate under the drive of the driving member.

[0127] like Fig.23 As shown, a plurality of single frames 11 are arranged as an integrated structure to form a shaping frame 1, and a protrusion 12 is arranged on the shaping frame 1; a driving member 13 is arranged on the protrusion 12, and a movable end of the driving member 13 is connected to the connecting rod 9;

[0128] As described above, in the present insert assembly structure, the expansion member 3 is sleeved on the shaping frame 1 and connected to the connecting rod 9 through the connecting ring 8. Thus, after the driving member 13 is set on the protruding portion 12 on the single frame 11 and connected to the connecting rod 9, it can drive the expansion member 3 to move relative to the shaping frame 1 and the insert 2, so that the expansion member 3 can lock and fix the insert 2.

[0129] In some embodiments, the connecting plate 5 can be connected to the base as a positioning member, and a driving member can be arranged on the base to drive the expansion member 3 to rotate.

[0130] The application method of the tire mold insert assembly structure of the present invention comprises the following steps:

[0131] S1, assembling two side inserts 22 in the mounting hole 101, then sliding and separating the two side inserts 22, and making the stopper 23 correspond to the outer wall of the shaping frame 1;

[0132] S2, inserting the middle insert 21 between the two side inserts 22 to expand the two side inserts 22 to achieve the connection between the insert 2 and the shaping frame 1;

[0133] S3, connect and fix the middle insert 21 and the side insert 22 at one end outside the shaping frame 1 through the connecting piece 4;

[0134] S4, assembling the expansion member 3 on the shaping frame 1, and then driving the expansion member 3 to rotate by the driving member, so that the expansion section 32 rotates toward the first curved surface 2301, and then cooperates with the shaping frame 1 to expand and fix the insert 2.

[0135] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tire mold insert assembly structure, characterized in that: It comprises a forming frame (1), an insert (2) and a tightening member (3), wherein: The shaping frame (1) is composed of a plurality of single frames (11) arranged in a circular array, and each single frame (11) is provided with a mounting hole (101); The insert (2) is inserted into the mounting hole (101), one end of the insert (2) abuts against the inner wall of the shaping frame (1), and the other end extends to the outside of the shaping frame (1) and is provided with a limiting portion; The expansion piece (3) is located outside the shaping frame (1), and the expansion piece (3) is an annular structure. The expansion piece (3) is used to apply a force away from the center of the shaping frame (1) to the limiting portion, so that the insert (2) and the shaping frame (1) are relatively fixed.

2. The tire mold insert assembly structure according to claim 1, characterized in that: It also includes a connecting piece (4), the insert (2) includes a middle insert (21), a side insert (22) and a stopper (23), wherein: The middle insert (21) and the side insert (22) are inserted into the mounting hole (101), and one side insert (22) is provided on the upper side and one side insert (22) is provided on the lower side of the middle insert (21); The middle insert (21) and the side insert (22) have one end located inside the shaping frame (1) as a shaping end and abut against the inner wall of the shaping frame (1); The middle insert (21) and the side insert (22) are connected to each other at one end located outside the shaping frame (1) via the connecting piece (4); The stopper (23) is the limiting portion; the stopper (23) is arranged on the side insert (22) and abuts against the expansion member (3).

3. The tire mold insert assembly structure according to claim 2, characterized in that: The connecting member (4) is in a rectangular frame structure, the middle insert (21) comprises a first forming block (211) and a first connecting block (212), and the side insert (22) comprises a second forming block (221) and a second connecting block (222), wherein: The first forming block (211) is inserted into the mounting hole (101) and abuts against the inner wall of the forming frame (1); The first connecting block (212) is detachably connected to the first forming block (211) and extends to the outside of the forming frame (1); The second forming block (221) is inserted into the mounting hole (101) and abuts against the inner wall of the forming frame (1); The second connecting block (222) is detachably connected to the second forming block (221) and extends to the outside of the forming frame (1); the stop block (23) is arranged on the second connecting block (222); The connecting member (4) is connected to the first connecting block (212), and abuts against an end of the second connecting block (222) away from the second forming block (221).

4. The tire mold insert assembly structure according to claim 3, characterized in that: The stopper (23) is spaced apart from the shaping frame (1), and a first curved surface (2301) and a second curved surface (2302) are provided on a side of the stopper (23) facing the shaping frame (1); The first curved surface (2301) is concentric with the shaping frame (1) and enables the stopper (23) to form a first wall thickness; the second curved surface (2302) is eccentrically arranged, the second curved surface (2302) is connected to the first curved surface (2301), and enables the stopper (23) to form a second wall thickness, the second wall thickness being smaller than the first wall thickness; The expansion piece (3) is slidably matched with the shaping frame (1); a concentric segment (31) that fits the first curved surface (2301) and an expansion segment (32) that fits the second curved surface (2302) are provided on the outer annular surface of the expansion piece (3); and the inner annular surface of the expansion piece (3) fits the shaping frame (1).

5. The tire mold insert assembly structure according to claim 4, characterized in that: It also includes a connecting plate (5), a conduit (6) and a limiting strip (7), wherein: The connecting plate (5) comprises a forming ring (51) and a positioning ring (52), wherein the forming ring (51) abuts against the inner wall surface of the forming frame (1) and the side surface of the second forming block (221); The positioning ring (52) is arranged on the outer peripheral surface of the forming ring (51) and is in contact with the end surface of the forming frame (1); The shaping frame (1) is provided with a through hole (102), the conduit (6) and the positioning ring (52) are arranged as an integrated structure, and the conduit (6) passes through the positioning ring (52) and is inserted into the through hole (102); One end of the limiting strip (7) is connected to the forming ring (51), and the other end is inserted between two adjacent inserts (2).

6. The tire mold insert assembly structure according to claim 5, characterized in that: The first forming block (211), the first connecting block (212), the second forming block (221) and the second connecting block (222), the width of which is inserted into the mounting hole (101) is smaller than the width of the mounting hole (101), and two limiting bars (7) are provided and are inserted into the connection between three adjacent inserts (2); or, The first forming block (211), the first connecting block (212), the second forming block (221) and the second connecting block (222), the parts of which are inserted into the mounting hole (101), have widths equal to the width of the mounting hole (101); the number of the limiting strips (7) corresponds to the number of the inserts (2); and each limiting strip (7) is inserted between two adjacent inserts (2).

7. The tire mold insert assembly structure according to claim 5 or 6, characterized in that: It also includes a connecting ring (8), a connecting rod (9) and a pressure ring (10), the insert (2) is provided with the limiting parts on both the upper and lower sides, and the expansion parts (3) are provided with two corresponding to the limiting parts, wherein: The connecting ring (8) is provided on each of the two expansion members (3); Both ends of the connecting rod (9) are connected to one of the connecting rings (8); The pressure ring (10) is connected to the connecting ring (8) and is slidably matched with the connecting plate (5).

8. The tire mold insert assembly structure according to claim 7, characterized in that: The thickness of the expansion member (3) is greater than the thickness of the stopper (23), and the connecting rod (9) comprises a rod body (91) and a limiting plate (92), wherein: One end of the rod body (91) is connected to a surface of one of the connecting rings (8), and the surface of the connecting ring (8) is connected to one of the expansion members (3); The limiting plate (92) is arranged on the rod body (91); the other end of the rod body (91) passes through another connecting ring (8); and the other expansion member (3) and the limiting plate (92) abut against the same surface of the connecting ring (8).

9. The tire mold insert assembly structure according to claim 7, characterized in that: It also comprises a driving member (13), a plurality of the single frames (11) are arranged as an integrated structure to form the shaping frame (1), and the shaping frame (1) is provided with a protruding portion (12); The driving member (13) is arranged on the protruding portion (12), and the movable end of the driving member (13) is connected to the connecting rod (9).

10. An application method of the tire mold insert assembly structure according to any one of claims 4 to 9, characterized in that: The following steps are involved: S1, assembling the two side inserts (22) in the mounting hole (101), then slidingly separating the two side inserts (22), and making the stopper (23) correspond to the outer wall of the shaping frame (1); S2, inserting the middle insert (21) between the two side inserts (22) to expand and tighten the two side inserts (22) to achieve connection between the insert (2) and the shaping frame (1); S3, connecting and fixing the middle insert (21) and the end of the side insert (22) located outside the shaping frame (1) through the connecting piece (4); S4, assembling the expansion member (3) onto the shaping frame (1), and then driving the expansion member (3) to rotate by a driving member, so that the expansion section (32) rotates toward the first curved surface (2301), thereby cooperating with the shaping frame (1) to expand and fix the insert (2).

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