One-step tire carcass and tire building method

Abstract

A one-step tire framework and a tire forming method, the tire framework comprises at least one group of one-step processing forming base and a plurality of support structures, the base is a plate structure and is deformed to form a cylindrical structure, the fixed protrusion base joint is connected with the fixed concave base joint to form the base into a cylindrical structure, at least one base function hole is provided in the base to enhance the adhesion of the base and the rubber material, at least one base connecting port is provided on the base to connect the pressure bearing ring, a plurality of support structures extend transversely from the base and are arranged along the radial direction of the tire, the support structure can be bent and deformed to form the curvature of the tire body framework, the support structure positioning hole is provided on the outer side of the support structure away from the base to connect the mounting ring and the rim, and the support structure function hole is provided on the inner side of the support structure close to the base to enhance the adhesion of the support structure and the rubber material.

Description

Technical Field

[0001] The present invention relates to the technical field of tire manufacturing, and in particular to a one-step tire frame and a tire molding method. Background Art

[0002] Existing all-steel radial truck and bus tires were primarily introduced by the French company Michelin in the 1950s. The structure of an all-steel radial tire includes the tread, base rubber, belt, carcass, soft apex rubber, hard apex rubber, bead wear-resistant rubber, sidewall rubber, inner liner, and transition layer. After nearly 70 years of development, all-steel radial rubber tires have demonstrated significant advantages in performance and fuel efficiency, and are now widely adopted worldwide.

[0003] The manufacturing steps of all-steel radial rubber tires are as follows: first, the rubber compound is mixed in an internal mixer, then the components are produced by extrusion or calendaring, the components are compounded in a molding machine to produce a tire blank, and finally, the tire is vulcanized in a vulcanizer to obtain the finished tire. In other words, the three main steps are component production, tire blank molding, and tire blank vulcanization.

[0004] Existing tire production processes using casting technology have significantly simplified the tire manufacturing process. The process employed in CN110561979B, in particular, has significantly reduced production costs, manufacturing processes, and fixed assets. In actual production, while the overall process is simplified, the tire frame assembly suffers from complex manufacturing and assembly processes, as well as poor cushioning performance, which significantly impacts production efficiency. During actual use, the frame in the tread area experiences significant deformation, which can easily lead to stress concentration at the connection point between the bearing ring and the carcass frame, reducing tire life.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a one-step tire frame and tire molding method. The one-piece molding eliminates the number of connection points of the support structure in the tread area. After the frame is processed and deformed, it can be quickly assembled with the pressure ring, mounting ring, and rim, and placed in a mold for casting to obtain a finished tire. The finished tire has the advantages of simple assembly, strong support, excellent controllability, and good cushioning performance, which can greatly improve work efficiency.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The one-step tire frame of the present invention comprises at least one set of one-step processed base and multiple support structures, wherein:

[0009] The base is a plate-like structure and is deformed into a cylindrical structure after processing.

[0010] A fixed groove base joint is provided at one end of the base in the longitudinal direction.

[0011] A fixed protrusion base joint is provided in the longitudinal direction of the base and opposite to the other end of the fixed groove base joint. The fixed protrusion base joint is connected to the fixed groove base joint to form a cylindrical structure of the base.

[0012] At least one substrate functional hole is provided through the substrate to enhance the adhesion between the substrate and the rubber material.

[0013] At least one base connection port, which is opened on the base to connect to the pressure ring,

[0014] Multiple support structures extending laterally from the base and arranged along the radial direction of the tire, wherein the support structures can be bent and deformed to form the curvature of the tire carcass skeleton,

[0015] At least one support structure positioning hole is provided on the outer side of the support structure away from the base body to connect the mounting ring and the rim,

[0016] At least one supporting structure functional hole is provided through the inner side of the supporting structure close to the base body to enhance the adhesion between the supporting structure and the rubber material.

[0017] In the one-step tire frame, the outer contour of the functional hole of the base body or the functional hole of the supporting structure is S-shaped, circular, elliptical or polygonal.

[0018] The one-step tire frame has a base that can be used in conjunction with a pressure ring. The base connection port is connected to the pressure ring by welding, riveting, bonding, bolt assembly or slot assembly. The base can also be used alone.

[0019] In the one-step tire frame, the end of the fixing groove base joint is provided with a first groove with a first inclination angle, the first groove is recessed with at least one fixing groove, the end of the fixing protrusion base joint is provided with a second groove with a second inclination angle, the second groove is protruding outwardly with at least one fixing protrusion, and the fixing groove connects and positions the fixing protrusion.

[0020] In the one-step tire frame, the sum of the first inclination angle and the second inclination angle is 180 degrees.

[0021] In the one-step tire frame, the support structure is symmetrically arranged on both sides of the base, or the support structure is arranged on one side of the base. After two one-step tire frames are spliced ​​on both sides, the support structures are symmetrically arranged on both sides of the base.

[0022] In the one-step tire frame, the airbag is placed in the space of the support structure symmetrically arranged on both sides of the base.

[0023] In the one-step tire frame, the one-step tire frame is a symmetrical structure.

[0024] The tire forming method of the one-step tire frame includes:

[0025] Step 1: The base and support structure are formed in one step. After the base is deformed by processing, the fixed groove base joints and the fixed protrusion base joints on both sides are first connected and fixed to form a cylindrical structure. Then, the roundness of the cylinder is corrected on a roundness correction machine. The support structure is bent and deformed to form the curvature of the tire carcass skeleton.

[0026] Step 2: Place the substrate and the supporting structure into a heat treatment furnace, complete the corresponding heat treatment process according to the surface hardness requirements, and perform surface treatment on the tire skeleton that has completed the heat treatment;

[0027] Step 3: Connect the cylindrical base to the pressure ring through the base connection port, insert the airbag before connecting to the mounting ring, and then position and connect the bent support structure to the mounting ring through the positioning hole, and correct the roundness.

[0028] Step 4: Place the surface-treated frame into a drying oven to control humidity and prevent surface rust.

[0029] Step 5: soaking or spraying the tire frame with glue and drying it, connecting the tire frame to the rim, centering the rim, and correcting the overall roundness;

[0030] Step 6, assemble the tire mold, place the one-step tire frame connected to the rim into the mold and position it, put it into the oven for preheating after positioning, and then cast the tire, wherein, first inflate the airbag, then cast the sidewall of the lower mold, after the rubber solidifies, cast the rubber at the nozzle position, after solidification, flip the mold 180°, complete the casting of the other sidewall, after the rubber solidifies, flip the mold to a vertical position, complete the casting of the tread part, and put the cast tire into the oven for curing; after curing, remove the mold to obtain the finished tire.

[0031] In the described method, one-step forming includes extrusion, drawing, spinning, stamping, machining, injection molding, casting or 3D printing, the base is formed into a cylindrical structure through spinning, stamping and machining, and the supporting structure is formed into the curvature of the tire carcass skeleton through spinning, stamping and machining.

[0032] The present invention adopts an integrated molding process, which has a simpler structure, significantly reduces the number of connection points between the pressure ring and the tire frame, reduces the stress concentration of the frame, and improves the life of the tire; the manufacturing cost is significantly lower than the existing technologies such as support structures, elastic columns, elastic columnar structures and elastic sheets, making the tire cost lower; the entire production process has fewer steps, the number of manpower required is reduced, and the assembly efficiency is greatly improved; compared with the existing technology, it is more convenient to recycle, and the speed of stripping and reusing the frame after the tire is recycled is faster, which improves the utilization rate of the frame; the present frame has strong support, and in extreme cases, the external polymer is damaged or deflated, or the tire bursts, it does not affect the tire load-bearing capacity and can continue to be used; the present frame can be directly used as a tire after being assembled into a whole with the pressure ring, mounting ring, and rim; the tire made with this frame has higher force transmission efficiency and more sensitive control. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 This is the tire skeleton expansion diagram of the one-step method;

[0035] Figure 2 It is a three-dimensional diagram of the fixed groove base joint;

[0036] Figure 3 A three-dimensional diagram of a fixed protrusion base joint;

[0037] Figure 4 This is a three-dimensional diagram of the tire skeleton after the base is formed into a cylindrical shape;

[0038] Figure 5 A three-dimensional diagram of the tire frame after bending the support structure into the curvature of the carcass frame;

[0039] Figure 6 is a plan view after deformation of the base and support structure;

[0040] Figure 7 This is a three-dimensional diagram of the assembly of the primary method frame, installation ring and pressure ring;

[0041] Figure 8 This is a stereoscopic diagram of the assembly of the frame, mounting ring, pressure ring and rim in one step;

[0042] Figure 9 This is a partial stereogram of the assembly of the frame, mounting ring, pressure ring and rim in one step;

[0043] Figure 10This is a stereoscopic diagram of the tire frame and mounting ring assembly in one step;

[0044] Figure 11 This is a stereoscopic diagram of the tire frame, mounting ring, and rim assembly in one step;

[0045] Figure 12 This is a partial stereogram of the tire skeleton after deformation using the one-step method;

[0046] Figure 13 There are two sets of unilateral skeleton stereograms;

[0047] Figure 14 A three-dimensional diagram of the cylindrical shape formed by the base of the two sets of unilateral skeletons;

[0048] Figure 15 The supporting structures of two sets of single-side frames are bent into a three-dimensional diagram of the carcass frame arc;

[0049] Figure 16 is a set of plane images after unilateral skeleton deformation;

[0050] Figure 17 A three-dimensional diagram of two sets of single-side frames deformed and spliced ​​and assembled with the mounting ring;

[0051] Figure 18 A three-dimensional diagram of two sets of single-side frames after deformation and splicing, assembled with the installation ring and pressure ring;

[0052] Figure 19 This is a three-dimensional diagram of two sets of single-sided skeletons being deformed and spliced ​​together and assembled with the mounting ring, pressure ring, and rim.

[0053] Description of reference numerals:

[0054] 1. Base; 1-1. Fixed groove base joint; 1-2. Fixed protrusion base joint; 1-3. Base functional hole; 1-4. Base connection port; 2. Support structure; 2-1. Support structure positioning hole; 2-2. Support structure functional hole; 3. Fixed groove; 4. Fixed protrusion; 5. Mounting ring; 6. Rim; 7. Pressure ring; 8. Weld. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0056] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0060] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0062] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0063] See also Figure 1-19 As shown, in one embodiment, a one-step tire frame of the present invention includes at least one set of one-step-processed base and multiple support structures, wherein:

[0064] The base 1 is a plate-like structure and is deformed into a cylindrical structure after processing.

[0065] The fixed groove base joint 1-1 is provided at one end of the base 1 in the longitudinal direction.

[0066] The fixed protrusion base joint 1-2 is provided in the longitudinal direction of the base 1 and is opposite to the other end of the fixed groove base joint 1-1. The fixed protrusion base joint 1-2 is connected to the fixed groove base joint 1-1 to form the base 1 into a cylindrical structure.

[0067] At least one base functional hole 1-3 is provided through the base 1 to enhance the adhesion between the base 1 and the rubber material.

[0068] At least one base connection port 1-4 is opened on the base 1 to connect to the pressure ring 7,

[0069] Multiple support structures 2 extend laterally from the base 1 and are arranged along the radial direction of the tire. The support structures 2 can be bent and deformed to form the curvature of the tire carcass skeleton.

[0070] At least one support structure positioning hole 2-1 is provided on the outer side of the support structure 2 away from the base 1 to connect the mounting ring 5 and the rim 6.

[0071] At least one supporting structure functional hole 2-2 is provided through the inner side of the supporting structure 2 close to the base 1 to enhance the adhesion between the supporting structure 2 and the rubber material.

[0072] In a preferred embodiment of the one-step tire skeleton, the outer contour of the base functional hole 1-3 or the support structure functional hole 2-2 is S-shaped, circular, elliptical or polygonal.

[0073] In a preferred embodiment of the one-step tire frame, the base 1 can be connected and used in conjunction with the pressure ring 7, and the base connection ports 1-4 are connected to the pressure ring 7 by welding, riveting, bonding, bolt assembly or slot assembly, or the base 1 can be used alone.

[0074] In a preferred embodiment of the one-step tire skeleton, the end of the fixing groove base joint 1-1 is provided with a first groove with a first inclination angle, the first groove is recessed with at least one fixing groove 3, the end of the fixing protrusion base joint 1-2 is provided with a second groove with a second inclination angle, the second groove is protruding outwardly with at least one fixing protrusion 4, and the fixing groove 3 connects and positions the fixing protrusion 4.

[0075] In a preferred embodiment of the one-step tire frame, the sum of the first inclination angle and the second inclination angle is 180 degrees.

[0076] In a preferred embodiment of the one-step tire skeleton, the support structure 2 is symmetrically arranged on both sides of the base 1, or the support structure 2 is arranged on one side of the base 1. After two one-step tire skeletons are spliced ​​on both sides, the support structure 2 is symmetrically arranged on both sides of the base 1.

[0077] In a preferred embodiment of the one-step tire frame, the airbag is placed in the space of the support structure 2 symmetrically arranged on both sides of the base 1.

[0078] In a preferred embodiment of the one-step tire frame, the one-step tire frame is a symmetrical structure.

[0079] A tire forming method for a one-step tire frame comprises:

[0080] Step 1: A base 1 and a support structure 2 are formed in one step. After the base 1 is deformed by processing, the fixed groove base joints 1-1 and the fixed protrusion base joints 1-2 on both sides are first connected and fixed to form a cylindrical structure. Then, the roundness of the cylinder is corrected on a roundness correction machine. The support structure 2 is bent and deformed to form the curvature of the tire carcass skeleton.

[0081] Step 2: Place the substrate 1 and the support structure 2 into a heat treatment furnace, complete the corresponding heat treatment process according to the surface hardness requirements, and perform surface treatment on the tire skeleton after the heat treatment;

[0082] Step 3, the base 1 of the cylindrical structure is connected with the pressure bearing ring 7 through the base connecting port 1-4, and is placed into the air bag before the connecting installation ring 5, then the curved support structure 2 is positioned and connected with the installation ring 5 through the positioning hole 2-1, and the roundness is corrected;

[0083] Step 4, the skeleton after surface treatment is placed into a drying box to control humidity and prevent surface rusting;

[0084] Step 5, the primary tire skeleton is soaked or sprayed with glue and dried, the primary tire skeleton is connected with the rim 6, the center of the rim 6 is positioned, and the overall roundness is corrected;

[0085] Step 6, the tire mold is assembled, the primary tire skeleton connected with the rim 6 is placed into the mold and positioned, after positioning, it is placed into an oven for preheating, then the tire is cast, wherein, the air bag is inflated first, then the lower mold sidewall is cast, after the glue solidifies, the glue at the bead position is cast, after solidification, the mold is turned over by 180°, the casting of the other sidewall is completed, after the glue solidifies, the mold is turned over to the vertical position, the casting of the tread position is completed, the cast tire is placed into an oven for curing, and the finished product tire is obtained after curing and demolding.

[0086] In the preferred embodiment of the method, the primary forming includes extrusion, drawing, spinning, stamping, machining, injection molding, casting or 3D printing, the base 1 is formed into a cylindrical structure through spinning, stamping or machining, and the support structure 2 is formed into the curvature of the tire carcass skeleton through spinning, stamping or machining.

[0087] In one embodiment, a plurality of groups of the primary processing formed base and the plurality of support structures can be combined.

[0088] In one embodiment, a one-step tire skeleton consists of a base 1 and a support structure 2, and the base 1 and the support structure 2 can be processed and formed in one step; the base 1 is a plate-like structure with a quadrilateral cross-section and a certain thickness, which is deformed by processing to form a cylindrical structure, on which are arranged a fixed groove base joint 1-1, a fixed protrusion base joint 1-2, a base functional hole 1-3, and a base connection port 1-4; the base 1 is connected to the pressure ring 7, has high bearing strength, and can stabilize the overall skeleton shape; the support structure 2 is a structure with a certain shape and thickness that is integrally connected to the base 1 and extends to both sides, which can form the curvature of the tire carcass skeleton after bending deformation, and the support structure 2 is arranged along the radial direction of the tire as a whole, providing the tire with bearing, buffering and torsional performance; the support structure 2 is provided with a support structure positioning hole 2-1 on the outside and a support structure functional hole 2-2 on the inside; the base 1 and the support structure 2 are deformed to form a skeleton, which can be quickly assembled with the mounting ring 5, the rim 6, and the pressure ring 7. The base body is provided with base functional holes 1-3 to enhance the adhesion between the base body and the rubber. The outer contour of the functional holes can be S-shaped, circular, elliptical, polygonal or special-shaped, and the number and depth of the holes are determined according to the specifications of the tire. The base body is provided with base connection ports 1-4 to connect the skeleton to the pressure ring. The number and depth of the holes are determined according to the specifications of the tire. The specific connection method can be welding, riveting, bonding, bolt assembly, and slot assembly. The base body 1 has a fixed groove base joint 1-1 and a fixed protrusion base joint 1-2 at both ends of the joint. The joint is provided with a fixed groove 3 and a fixed protrusion 4, wherein the fixed groove 3 is used to place and position the fixed protrusion 4, and the fixed protrusion is used to connect the first and second grooves on both sides. The two cooperate to improve the firmness of the groove connection. The number of the fixed groove 3 and the fixed protrusion 4 can be single or multiple, and can be multi-piece or integrated. The support structure 2 can be arranged on both sides of the base 1 in a symmetrical arrangement; it can also be arranged on one side of the base 1, and the two sides can be spliced ​​together to form a symmetrical arrangement. The outside of the support structure is provided with a support structure positioning hole 2-1, which is used to connect the support structure with the mounting ring and the rim; the inside of the support structure is provided with a support structure functional hole 2-2, which enhances the adhesion between the support structure and the rubber. The base 1 can be connected and used in conjunction with the pressure ring 7. The base connection port 1-4 is connected to the pressure ring by welding, riveting, bonding, bolt assembly or slot assembly, and the base 1 can also be used alone. The airbag can be inserted into the space of the support structure 2 symmetrically arranged on both sides of the base 1; the airbag can also be inserted before the bases on both sides are spliced ​​together. Preferably, according to different usage scenarios, the tire with the airbag can be used as either an inflatable tire or a non-inflatable tire. " and "As a preference, the one-step tire frame and the pressure ring, mounting ring, and rim can be assembled by welding, riveting, bonding, bolt assembly, or slot assembly.

[0089] In one embodiment, a tire building method includes:

[0090] The base body 1 and the support structure 2 are processed by one-time forming, and the specific mode can be extrusion, drawing, spinning, stamping, machining, injection molding, pouring, 3D printing;

[0091] After the base body 1 is deformed by processing, the two sides are fixed with the groove base joint 1-1 and the fixed protrusion base joint 1-2, which are first connected and fixed to form a cylindrical structure, and the specific mode can be spinning, stamping, machining, and then the roundness of the cylinder is corrected on a roundness correction machine;

[0092] The support structure 2 is deformed by bending to form the curvature of the tire carcass skeleton, and the specific mode can be spinning, stamping, or machining;

[0093] The skeleton is placed in a heat treatment furnace, and the corresponding heat treatment process is completed according to the surface hardness requirement;

[0094] The surface of the skeleton after heat treatment is subjected to oil removal, rust removal, and oxidation coating removal operations;

[0095] The cylindrical structure of the base body 1 is connected with the pressure bearing ring 7 through the base body connection port 1-4, the air bag is placed in front of the connection mounting ring 5, then the bent support structure 2 is positioned and connected with the mounting ring 5 through the positioning hole 2-1, and the roundness of the formed skeleton is corrected; the skeleton after surface treatment is placed in a drying box to control humidity and prevent surface rust; the skeleton is soaked or sprayed with glue, and then dried and placed for a certain period of time; the treated skeleton is connected with the rim 6, and the rim 6 is centrally positioned and the overall roundness is corrected; the tire mold is assembled, and the whole is placed in the mold and positioned; after positioning, it is placed in an oven and preheated as required; the tire is poured: first inflate the air bag, then pour the sidewall of the lower mold, and then pour the glue at the sub-port position after the glue solidifies; after solidification, the mold is turned over by 180° to complete the pouring of the other side sidewall; after the glue solidifies, the mold is turned to the vertical position to complete the pouring of the tread part; the poured tire is placed in an oven for curing; after curing, the product tire is obtained.

[0096] As a preferred embodiment, the base body 1 is a plate-shaped structure with a certain thickness and a quadrilateral cross-section, which is deformed by processing to form a cylindrical structure, and the top of which is arranged with a fixed groove base joint 1-1, a fixed protrusion base joint 1-2, a base body functional hole 1-3, and a base body connection port 1-4; the base body 1 is connected with the pressure bearing ring 7, which has high bearing strength and can stabilize the overall skeleton shape. The base body is arranged with a base body connection port 1-4 for connecting the skeleton with the pressure bearing ring, and the number and depth thereof are determined according to different tire specifications, and the specific connection mode can be welding, riveting, bonding, bolt assembly, or clamping groove assembly.

[0097] Preferably, support structure positioning holes 2-1 are arranged on the outside of the support structure to connect the support structure with the mounting ring and the rim. The outer contour of the positioning holes can be S-shaped, circular, elliptical, polygonal or irregular, and their number and depth depend on different tire specifications.

[0098] Preferably, support structure functional holes 2-2 are arranged on the inner side of the support structure to enhance the adhesion between the support structure and the rubber. The outer contour of the functional holes can be S-shaped, circular, elliptical, polygonal or irregular, and their number and depth depend on different tire specifications.

[0099] Preferably, the base 1 can be formed into a cylindrical shape through spinning, stamping, or machining, and then the cylindrical roundness can be corrected on a roundness correction machine. The support structure 2 can be deformed through spinning, stamping, or machining to form the curvature of the tire carcass skeleton. The base 1 and support structure 2 can be made of metal, non-metal, organic polymer, or composite materials. The thickness, length, and connection area dimensions can be adjusted according to tire specifications. They can be constructed from different materials in a single or multi-layer structure, or from a single material in a single or multi-layer structure.

[0100] Preferably, the tire with the airbag can be used as either a pneumatic tire or a non-pneumatic tire according to different usage scenarios.

[0101] Preferably, the one-step tire frame and the pressure ring, the mounting ring, and the rim can be assembled by welding, riveting, bonding, bolt assembly, or slot assembly.

[0102] Example 1

[0103] Taking the tire size 27.00R49 as an example, when producing a hollow tire, if a high-strength tire carcass is used and the support structure 2 is thickened, it can be used as a non-pneumatic tire. In this case, the support structure 2 is arranged symmetrically on both sides of the base 1. The tire molding method is as follows:

[0104] First, the base 1 and the symmetrically arranged support structure 2 are punched out, see Figure 1 , roll the base 1 into a cylindrical structure, see Figure 4 , and then bend the support structure 2 into the carcass frame curvature, see Figure 5 , cross section as Figure 6 As shown. The tire frame is then placed in a heat treatment furnace at 830°C. The hardness of the workpiece after treatment is HRC40-45. After removal, the surface of the tire frame is degreased, rusted, and the oxidation coating is removed. The base connection port 1-4 is connected to the pressure ring 7. The airbag is inserted before connecting the mounting ring 5. The processed support structure 2 is positioned and connected to the mounting ring 5 through the support structure positioning hole 2-1. Figure 7As shown, the formed skeleton is corrected for roundness and then placed in a drying box, with humidity controlled at 10% to 30% RH, to prevent surface rust. Finally, the entire skeleton is coated with glue and dried, and left to stand for 2 hours.

[0105] Second, the skeleton is connected with the rim 6, and the entire center is positioned and corrected for roundness, as shown in Figure 8 、 Figure 9 After the tire mold is assembled, it is placed in the skeleton and positioned. It is preheated at 80°C for 1 hour in an oven as required. When pouring the pneumatic tire, the air bag is inflated first, and then the lower mold side is poured. After the rubber solidifies, the sub-port position is poured, and after solidification, the mold is turned over by 180°, the other side of the side is poured, and after the rubber solidifies, the mold is turned to the vertical position, and the pouring of the tread part is completed; the poured tire is placed in an oven for 6 hours for curing; and the finished product tire is obtained after demolding. In addition, due to the adoption of the new tire structure, the expression method (27.00R49) of the tire specification selected in this example is only a reference to the external dimensions.

[0106] Example 2

[0107] Take the tire 21.00R25 as an example, a hollow tire can be produced. In a low load scenario, the base body 1 in the skeleton can replace the pressure bearing ring 7. In this case, the support structures 2 are symmetrically arranged on both sides of the base body 1, and the tire forming method is as follows:

[0108] First, the base body 1 and the symmetrically arranged support structures 2 are stamped, as shown in Figure 1 The base body 1 is rolled into a cylindrical structure, as shown in Figure 4 The support structures 2 are bent into the curvature of the carcass skeleton, as shown in Figure 5 , and the cross section is as shown in Figure 6 Then, the tire skeleton is placed in a heat treatment furnace with a temperature of 830°C, and the hardness of the heat treated workpiece is HRC40-45. After removal, the surface of the skeleton is subjected to oil removal, rust removal, and oxidation coating removal operations. Before connecting the mounting ring 5, the air bag is placed, and the processed support structures 2 are positioned and connected with the mounting ring 5 through the support structure positioning holes 2-1, as shown in Figure 10 The formed skeleton is corrected for roundness and then placed in a drying box, with humidity controlled at 10% to 30% RH, to prevent surface rust. Finally, the entire skeleton is coated with glue and dried, and left to stand for 2 hours.

[0109] Second, the skeleton is connected with the rim 6, and the entire center is positioned and corrected for roundness, as shown in Figure 11 、 Figure 12As shown. After assembling the tire mold, insert the frame and position it. Preheat in an oven at 80°C for one hour as required. When casting the pneumatic tire, first inflate the airbag, then cast the lower mold sidewall. After the rubber solidifies, cast the spigot. After solidification, flip the mold 180° and cast the other sidewall. After the rubber solidifies, flip the mold to a vertical position to complete the casting of the tread area. The cast tire is placed in an oven to cure for 6 hours. After demolding, the finished tire is obtained. In addition, due to the use of a new tire structure, the tire specification (21.00R25) selected in this example is only a reference to its external dimensions.

[0110] Example 3

[0111] Taking the tire size 6.50R10 as an example, hollow tires can be produced. A different airbag placement process is used from the previous example. In this example, the support structure 2 is only on one side of the base 1, and the overall frame is spliced ​​by two sets of single-sided frames. The tire molding method is as follows:

[0112] First, the base 1 and the single-sided support structure 2 are machined. Figure 13 Roll the two base bodies 1 with the support structure 2 on one side into a cylindrical structure, see Figure 14 , bend the single-side support structure 2 into the radian of the tire carcass skeleton, such as Figure 15 、 Figure 16 As shown. Then put the skeleton into the heat treatment furnace at 830℃. The hardness of the workpiece after heat treatment is HRC40-45. After taking it out, the skeleton surface is degreased, rusted, and the oxidation coating is removed. The two single-sided carcass skeletons are connected to the mounting ring 5 through the support structure positioning hole 2-1 on the support structure 2. The airbag is placed before the base bodies 1 on both sides are spliced. Then, the base bodies 1 on both sides are welded by the cylindrical automatic welding equipment. The weld seam 8 is formed between the base bodies 1. Figure 17 The cylindrical base 1 is connected to the pressure ring 7 through the base connection port 1-4 and the roundness is corrected. Figure 18 After completion, place it in a drying oven and control the humidity at 10% to 30% RH to prevent surface rust. Finally, apply glue to the entire piece and dry it for 2 hours.

[0113] Next, connect the frame to the rim 6, center the rim 6, and correct the roundness. Figure 19 、 Figure 9As shown. After assembling the tire mold, insert the frame and position it. Preheat in an oven at 80°C for one hour as required. When casting the pneumatic tire, first inflate the bladder, then cast the lower mold sidewall. After the rubber solidifies, cast the sprue. After solidification, flip the mold 180° and cast the other sidewall. After the rubber solidifies, flip the mold to a vertical position to complete the casting of the tread. The cast tire is then placed in an oven to cure for six hours. After removal from the mold, the finished tire is obtained. In addition, due to the new tire structure, the tire specification (6.50R10) used in this example is only a reference to its overall dimensions.

[0114] Finally, it should be noted that the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.

[0115] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A tire building method, using a one-step tire frame, characterized in that: These include, Step 1: The base and support structure are formed in one step. After the base is deformed by processing, the fixed groove base joints and the fixed protrusion base joints at both ends are first connected and fixed to form a cylindrical structure. Then, the roundness of the cylinder is corrected on a roundness correction machine. The support structure is bent and deformed to form the curvature of the tire carcass skeleton. Step 2: Place the substrate and the supporting structure into a heat treatment furnace, complete the corresponding heat treatment process according to the surface hardness requirements, and perform surface treatment on the tire skeleton that has completed the heat treatment; Step 3: Connect the cylindrical base to the pressure ring through the base connection port, insert the airbag before connecting to the mounting ring, and then position and connect the bent support structure to the mounting ring through the support structure positioning hole, and correct the roundness. Step 4: Place the surface-treated tire frame into a drying oven to control humidity and prevent surface rust. Step 5: soaking or spraying the tire frame with glue and drying it, connecting the tire frame to the rim, centering the rim, and correcting the overall roundness; Step 6, assemble the tire mold, place the one-step tire frame connected to the rim into the mold and position it, put it into the oven for preheating after positioning, and then cast the tire, wherein the airbag is first inflated, and then the sidewall of the lower mold is cast, and after the rubber solidifies, the rubber at the nozzle position is cast, and after solidification, the mold is turned 180 degrees to complete the casting of the other sidewall, and after the rubber solidifies, the mold is turned to a vertical position to complete the casting of the tread part, and the cast tire is placed in an oven for curing; after curing, the mold is removed from the mold to obtain a finished tire; the one-step tire frame includes at least one set of one-step processed matrix and multiple support structures, wherein, The base is a plate-like structure and is deformed into a cylindrical structure after processing. A fixed groove base joint is provided at one end of the base in the longitudinal direction. A fixed protrusion base joint is provided in the longitudinal direction of the base and opposite to the other end of the fixed groove base joint. The fixed protrusion base joint is connected to the fixed groove base joint to form a cylindrical structure of the base. At least one substrate functional hole is provided through the substrate to enhance the adhesion between the substrate and the rubber material. At least one base connection port, which is opened on the base to connect to the pressure ring, Multiple support structures extending laterally from the base and arranged longitudinally along the base, the support structures being bendable and deformable to form the curvature of the tire carcass skeleton, At least one support structure positioning hole is provided on the outer side of the support structure away from the base body to connect the mounting ring and the rim, At least one supporting structure functional hole is provided through the inner side of the supporting structure close to the base body to enhance the adhesion between the supporting structure and the rubber material.

2. The method according to claim 1, wherein One-step molding includes extrusion, drawing, spinning, stamping, machining, injection molding, casting or 3D printing. The base is formed into a cylindrical structure through spinning, stamping and machining, and the supporting structure is formed into the curvature of the tire carcass skeleton through spinning, stamping and machining.

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