A tire building machine and its building method

Abstract

The present invention belongs to the technical field of tire production, and discloses a tire building machine and a building method thereof. The tire building machine includes a belt drum, a building drum, a first conveying track, a first transition conveying device, a rear calender roller device, a second conveying track and a first feeding device. The rear calender roller device and the first transition conveying device are movably mounted on the second conveying track; the first feeding device can supply a first rubber compound to the building drum through the first transition conveying device; the first transition conveying device has a first feeding position for docking with the first feeding device and a first docking position for docking with the building drum on the second conveying track; the rear calender roller device has a calendering position for docking with the building drum and a first avoidance position for avoiding the first transition conveying device on the second conveying track. The tire building machine can be improved on the basis of a common one-step building method tire building machine to have the ability to produce a run-flat tire blank.

Description

Technical Field

[0001] The present invention relates to the technical field of tire forming, and particularly relates to a tire forming machine and a forming method thereof. Background Art

[0002] Existing automobile tires can meet basic driving needs. However, with the increasing emphasis on driving safety, run-flat tires have gradually been applied to some vehicles. Run-flat tires can ensure that the vehicle can continue to drive after a flat tire or air leakage.

[0003] Therefore, the structure of the existing tire forming machine needs to be adaptively improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a tire forming machine with the function of producing run-flat tire embryos.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A tire forming machine includes:

[0007] A belt drum for forming a tread component;

[0008] A forming drum for forming a carcass component;

[0009] A first conveying track located vertically below the belt drum and the forming drum;

[0010] A first transition conveying device;

[0011] A rear pressure roller device provided on the radial outer side of the forming drum for compounding the tread component and the carcass component;

[0012] A second conveying track arranged in parallel at an interval from the first conveying track, and the rear pressure roller device and the first transition conveying device are movably installed on the second conveying track; and

[0013] A first feeding device configured to supply a first rubber compound to the forming drum through the first transition conveying device;

[0014] The first transition conveying device has a first feeding position for docking with the first feeding device and a first docking position for docking with the forming drum on the second conveying track;

[0015] The rear pressure roller device has a roller pressing position for docking with the forming drum and a first avoiding position for avoiding the first transition conveying device on the second conveying track.

[0016] Preferably, the first transition conveying device includes:

[0017] A transition drum having a circular or arcuate receiving surface configured to receive the first stock compound;

[0018] A rotary drive mechanism configured to drive the transition drum to rotate; and

[0019] A docking drive mechanism configured to drive the transition drum to move radially so that the transition drum docks with the forming drum.

[0020] Preferably, the first transition conveying device further includes:

[0021] A sliding seat disposed on the second conveying track for supporting the transition drum;

[0022] A linear movement drive mechanism for driving the sliding seat to move along the second conveying track.

[0023] Preferably, there are two transition drums, the two transition drums are arranged in parallel at intervals, and the corresponding first feeding device can simultaneously supply the first stock compound to the two transition drums.

[0024] Preferably, the first transition conveying device further includes an opening and closing drive mechanism for driving the two transition drums to perform an opening and closing movement.

[0025] Preferably, the tire building machine further includes a second transition conveying device and a second feeding device, and the second feeding device is configured to supply a second stock compound to the forming drum through the second transition conveying device.

[0026] Preferably, the second transition conveying device is movably mounted on the second conveying track, and the second transition conveying device has a second loading position for docking with the second feeding device, a second docking position for docking with the forming drum, and a second avoidance position for avoiding the first transition conveying device.

[0027] Preferably, one end of the second conveying track extends beyond the first conveying track, and the first feeding device is disposed on either side of the second conveying track.

[0028] Preferably, the tire building machine further includes a tread stock feeding rack, a carcass stock feeding rack, and a transfer ring;

[0029] The tread stock feeding rack is used to supply tread components to the belt drum to form a tread assembly;

[0030] The carcass stock feeding rack is used to supply carcass components to the forming drum to form a carcass assembly;

[0031] The transfer ring is used to transfer the tread component to the surface of the carcass component.

[0032] To achieve this purpose, the present invention adopts the following technical solutions:

[0033] A tire forming method based on the above tire forming machine, which includes:

[0034] The tread material feeding rack supplies the tread component to the belt drum for forming the tread component;

[0035] The carcass material feeding rack supplies part of the carcass components for forming the carcass component to the forming drum;

[0036] The first transition conveying device moves along the second conveying track to the first loading position and receives the first rubber compound provided by the first feeding device;

[0037] The post-pressure roller device moves along the second conveying track to the first avoidance position;

[0038] The first transition conveying device moves along the second conveying track to the first docking position and supplies the first rubber compound to the forming drum;

[0039] The carcass material feeding rack continues to supply the remaining carcass components for forming the carcass component to the forming drum to form the carcass component on the forming drum;

[0040] The transfer ring transfers the tread component to the surface of the carcass component on the forming drum;

[0041] The post-pressure roller device moves along the second conveying track to the rolling position and rolls the tread component on the forming drum so that the tread component is combined with the carcass component to obtain a tire blank.

[0042] Preferably, the tire forming machine further includes a second transition conveying device and a second feeding device movably installed on the second conveying track, and the tire forming method further includes:

[0043] When the first transition conveying device is in the first loading position, the second transition conveying device moves along the second conveying track to the second loading position and receives the second rubber compound provided by the second feeding device;

[0044] Before the first transition conveying device moves along the second conveying track to the first docking position, the second transition conveying device moves along the second conveying track to the second avoidance position;

[0045] After the first transition conveying device supplies the first rubber compound to the forming drum, the first transition conveying device resets to the first feeding position, and the second transition conveying device moves along the second conveying track to the second docking position to supply the second rubber compound to the forming drum;

[0046] Before the rear pressure roller device moves along the second conveying track to the rolling position, the second transition conveying device resets to the second feeding position.

[0047] Advantages of the present invention:

[0048] The tire forming machine provided by the present invention is not only applicable to forming ordinary tire embryos, but also applicable to forming bead reinforcement type tire embryos with bead filler added on the basis of ordinary tires, and is also applicable to forming run-flat tire embryos with support rubber added on the basis of ordinary tires. During the process of forming the above two types of tire embryos different from ordinary tire embryos, the first transition conveying device and the rear pressure roller device can slide along the second conveying track and avoid each other to respectively and timely dock with the forming drum to complete the feeding process of the bead filler / support rubber and the tread rolling process. In addition, the tire forming machine can be improved on the basis of an ordinary one-step forming method tire forming machine to have the ability to produce run-flat tire embryos. Description of the Drawings

[0049] Figure 1 is a schematic structural diagram of the tire forming machine in an embodiment of the present invention;

[0050] Figure 2A is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S1;

[0051] Figure 2B is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S2;

[0052] Figure 2C is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S3;

[0053] Figure 2D is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S4;

[0054] Figure 2E is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S5;

[0055] Figure 2F is a partial structural diagram of the tire forming machine in an embodiment of the present invention at step S6;

[0056] Figure 3A is a top view of the first transition conveying device in an embodiment of the present invention when it is in the first feeding position;

[0057] Figure 3B It is a top view of the first transition conveying device in the first docking position in the embodiment of the present invention;

[0058] Figure 3C It is a top view of the first transition conveying device being docked with the forming drum in the embodiment of the present invention;

[0059] Figure 4A It is a side view of the first transition conveying device in the first loading position in the embodiment of the present invention;

[0060] Figure 4B It is a side view of the first transition conveying device being docked with the forming drum in the embodiment of the present invention;

[0061] Figure 5 It is a schematic diagram of the transmission structure of the transition drum in the embodiment of the present invention.

[0062] In the figure:

[0063] 100, belt drum; 200, tread material supply rack; 300, forming drum; 400, carcass material supply rack; 500, transfer ring; 600, bead positioning device; 700, bead pre-setting device; 800, post-pressure roller device; 900, first feeding system; 910, second feeding system;

[0064] 110, first conveying track; 210, second conveying track;

[0065] 1A, first transition conveying device; 1B, second transition conveying device;

[0066] 11, transition drum; 111, drum body; 112, receiving surface; 113, thorn needle; 114, adsorption part;

[0067] 12, rotation driving mechanism; 121, spline shaft; 122, rotation driving part;

[0068] 13, docking driving mechanism; 131, slider; 132, slide rail; 133, docking driving part;

[0069] 14, linear movement driving mechanism;

[0070] 15, sliding seat;

[0071] 16, opening and closing driving mechanism; 161, lead screw; 162, opening and closing driving part;

[0072] 3A, first feeding device; 3B, second feeding device. Detailed implementation manners

[0073] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0074] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0076] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0077] The embodiment of the present invention provides a tire building machine, which is a one-step building machine and is used for building the carcass of a semi-steel radial tire, and is particularly applicable to building the carcass of a run-flat tire.

[0078] As Figure 1As shown in the figure, the tire building machine provided by the embodiment of the present invention includes a belt drum 100, a tread material feeder 200, a building drum 300, a carcass material feeder 400, a transfer ring 500, a bead positioning device 600, a bead pre-setting device 700, and a post-pressure roller device 800. Further, the tire building machine further includes a first conveying track 110. The first conveying track 110 is located below the belt drum 100 and the building drum 300 in the vertical direction. The belt drum 100 and the transfer ring 500 can move laterally on the first conveying track 110.

[0079] The process of forming a tire embryo by this tire building machine is generally as follows.

[0080] First, the tread material feeder 200 sequentially supplies tread components such as belt layers, chafer belts, and tread layers to the belt drum 100, so that the above-mentioned tread components are sequentially attached to the outer surface of the belt drum 100 and are compounded with each other to form a tread assembly. The carcass material feeder 400 sequentially supplies carcass components such as a PA composite layer (formed by splicing an inner liner layer and a sidewall layer) and a ply to the building drum 300, so that the above-mentioned carcass components are sequentially attached to the outer surface of the building drum 300 and are compounded with each other to form a carcass assembly. The PA composite layer can be called the first carcass layer, and the ply can be called the second carcass layer.

[0081] Next, the bead pre-setting device 700 supplies two beads to the bead positioning device 600, and the bead positioning device 600 places the two beads on the radial outer side of the ply on the building drum 300. When the inside of the carcass component located inside the bead is inflated by the building drum 300, the carcass component located outside the bead is turned back and abutted against the outer surface of the carcass component located inside the bead, thereby obtaining a carcass assembly.

[0082] After that, the transfer ring 500 grabs the tread assembly on the belt drum 100 and transfers it to the radial outer side of the carcass assembly on the building drum 300, so that the tread assembly is attached to the radial outer surface of the carcass assembly;

[0083] Finally, the post-pressure roller device 800 performs a rolling and compounding process on the tread assembly and the carcass assembly to obtain a tire embryo.

[0084] Compared with the forming process of an ordinary tire embryo, the forming process of a run-flat tire embryo further requires that before the ply is attached to the PA composite layer, two support rubbers are attached to the radial outer side of the specified position of the PA composite layer, so as to increase the thickness and rigidity of the tire sidewall by means of the support rubbers, so that the support rubbers can carry the vehicle body weight in the radial direction of the tire, enabling the tire to have the function of run-flat and preventing the vehicle from being unable to drive due to the tire being completely flattened by the vehicle body when the tire leaks air.

[0085] To this end, the tire building machine provided by the embodiment of the present invention further includes a first feeding system 900 capable of supplying support rubber to the building drum 300 and a second conveying track 210 parallel to the first conveying track 110. Among them, the post-pressure roller device 800 is arranged on the second conveying track 210 and can move laterally along the second conveying track 210. The first feeding system 900 includes a first transition conveying device 1A and a first feeding device 3A for supplying the first rubber compound to the first transition conveying device 1A. Among them, the first transition conveying device 1A is arranged on the second conveying track 210 and is configured to be able to move laterally along the second conveying track 210 to be aligned and docked with the building drum 300 front and back, so as to supply the first rubber compound to the building drum 300. In this way, when the above-mentioned building machine manufactures a run-flat tire, the first rubber compound is support rubber. During the forming process of the run-flat tire blank, when it is necessary to bond the support rubber to the radially outer side of the PA composite layer, the strip-shaped support rubber can be transitionally conveyed to the PA composite layer on the drum surface of the building drum 300 through the first transition conveying device 1A. As the building drum 300 rotates, the strip-shaped support rubber can be wound by the building drum 300 around the outer periphery of the PA composite layer to form a ring-shaped closed support rubber.

[0086] It should be noted that the first transition conveying device 1A needs to first move laterally to dock with the first feeding device 3A so that the first transition conveying device 1A can receive the first rubber compound provided by the first feeding device 3A. Taking the support rubber as an example, after the first transition conveying device 1A receives the support rubber, it can move to a predetermined position directly opposite to the building drum 300. After the first transition conveying device 1A moves to the predetermined position and docks with the building drum 300, the building drum 300 rotates to receive the support rubber. When all the support rubber on the first transition conveying device 1A is completely transferred to the building drum 300, the first transition conveying device 1A can move laterally to the feeding device 3A again to receive the next strip of support rubber.

[0087] In order to transfer the support rubber to the drum surface of the building drum 300, the first transition conveying device 1A needs to be arranged at the rear side of the building drum 300 and face the drum surface of the building drum 300. And the post-pressure roller device 800 also needs to perform a rolling process on the composite of the carcass components or the composite of the carcass components and the tread components on the building drum 300 at the same position. To avoid position interference between the first transition conveying device 1A and the post-pressure roller device 800, it is necessary to allow the two to be able to face the drum surface of the building drum 300 successively to respectively perform the transition conveying operation of the support rubber and the rolling process operation.

[0088] Optionally, as Figure 1As shown, in special cases where it is necessary to reduce the friction between the tire and the rim, a bead reinforcement structure needs to be added to the tire. Therefore, during the formation process of the tire blank, bead rubber needs to be added to achieve the above purpose. Thus, the tire forming machine provided by the embodiment of the present invention further includes a second feeding system 910. Specifically, the second feeding system 910 includes a second transition conveying device 1B and a second feeding device 3B. Among them, the second transition conveying device 1B is used to supply a second rubber compound to the forming drum 300, taking bead rubber as an example. The second feeding device 3B is used to supply bead rubber to the second transition conveying device 1B. The second transition conveying device 1B is arranged on the second conveying track 210 and can move horizontally along the second conveying track 210. The second transition conveying device 1B and the first transition conveying device 1A are both arranged on the second conveying track 210 and are horizontally spaced apart.

[0089] In one embodiment, both the first feeding device 3A and the second feeding device 3B are located on the same side of the second conveying track 210 and are spaced apart. In another alternative embodiment, the first feeding device 3A and the second feeding device 3B can be respectively arranged on both sides of the second conveying track 210.

[0090] Figures 2A to 2F It shows the process in which the first feeding system 900 and the second feeding system 910 sequentially supply support rubber and bead rubber to the forming drum 300, and the process in which the post-pressure roller device 800 rolls the tire carcass assembly. Among them, the method of feeding the rubber compound generally includes the following steps:

[0091] S1. The first transition conveying device 1A receives the support rubber;

[0092] As Figure 2A shown, the first transition conveying device 1A is in the first feeding position aligned with the first feeding device 3A, so that the first transition conveying device 1A can receive the support rubber output by the first feeding device 3A.

[0093] S2. The first transition conveying device 1A moves horizontally to the first docking position aligned with the forming drum 300;

[0094] As Figure 2B shown, the first transition conveying device 1A carrying the support rubber moves horizontally to the first docking position aligned with the forming drum 300. At this time, the post-pressure roller device 800 and the second transition conveying device 1B respectively move horizontally to the first avoidance position and the second avoidance position to make way for the first transition conveying device 1A.

[0095] S3. The first transition conveying device 1A moves back and forth to dock with the forming drum 300;

[0096] As Figure 2CAs shown, when it is necessary to provide support rubber to the forming drum 300, the first transition conveying device 1A is docked with the forming drum 300 before and after to transfer the support rubber to the drum surface of the forming drum 300.

[0097] When a bead reinforcement structure needs to be added to the tire, the method of feeding the rubber compound further includes:

[0098] S4. The second transition conveying device 1B receives the bead rubber;

[0099] As Figure 2A shown, when the first transition conveying device 1A is in the first feeding position, the second transition conveying device 1B can be simultaneously in the second feeding position aligned with the second feeding device 3B, so that the second transition conveying device 1B receives the bead rubber output by the second feeding device 3B. Before the first transition conveying device 1A moves to the first docking position, the second transition conveying device 1B can move out of the way first.

[0100] S5. The second transition conveying device 1B moves laterally to the working station aligned with the forming drum 300;

[0101] As Figure 2D shown, after the support rubber is transferred to the drum surface of the forming drum 300 and the first transition conveying device 1A is reset to the first feeding position, the second transition conveying device 1B can move laterally from the second avoiding position to the second feeding position aligned with the forming drum 300. At this time, the rear pressure roller device 800 is still in the first avoiding position.

[0102] S6. The second transition conveying device 1B moves forward and backward to dock with the forming drum 300;

[0103] As Figure 2E shown, when it is necessary to provide bead rubber to the forming drum 300, the second transition conveying device 1B is docked with the forming drum 300 before and after to transfer the bead rubber to the drum surface of the forming drum 300.

[0104] S7. The second transition conveying device 1B is reset to the second feeding position.

[0105] As Figure 2F shown, the second transition conveying device 1B is reset to the second feeding position. Subsequently, the rear pressure roller device 800 can move laterally from the first avoiding position to the rolling position behind the forming drum 300 for rolling the composite tread component and the carcass component.

[0106] It can be understood that in the implementation of producing a bead reinforcement type tire blank that only needs to add a bead reinforcement structure to an ordinary tire blank, and in the implementation of producing a run-flat tire blank without a bead reinforcement structure, the tire building machine only needs to be configured with the first feeding system 900 or the second feeding system 910. Of course, when the first feeding system 900 and the second feeding system 910 are configured at the same time, only one of the first feeding system 900 and the second feeding system 910 can be used to transfer the bead rubber or the support rubber in a transitional manner, such as only using the second feeding system 910.

[0107] The structures of the first transitional conveying device 1A and the second transitional conveying device 1B will be described in detail below. The first transitional conveying device 1A and the second transitional conveying device 1B can adopt the same or similar structures. Therefore, only the first transitional conveying device 1A will be described in detail as an example.

[0108] As Figure 3A 、 3B shown in 3C, and in combination with Figure 4A and Figure 4B . The first transitional conveying device 1A includes a transitional drum 11, a rotary driving mechanism 12, and a docking driving mechanism 13. Among them, the drum body 111 of the transitional drum 11 has a circular or arc-shaped receiving surface 112 (that is, the drum surface of the drum body 111). The receiving surface 112 is configured to receive the strip-shaped support rubber. The rotary driving mechanism 12 is configured to drive the transitional drum 11 to rotate. The docking driving mechanism 13 is configured to drive the transitional drum 11 to move radially along the building drum 300 so that the transitional drum 11 is docked with the building drum 300. The first transitional conveying device 1A further includes a longitudinal movement driving mechanism 14 and a sliding seat 15. Among them, the longitudinal movement driving mechanism 14 is configured to drive the transitional drum 11 to move horizontally. The sliding seat 15 is arranged on the second conveying track 210 and is used to support the transitional drum 11. The sliding seat 15 can move along the second conveying track 210 under the drive of the longitudinal movement driving mechanism 14.

[0109] Specifically, Figure 3A 、 Figure 3B and Figure 3C show the cooperation process of the first transitional conveying device 1A with the first feeding device 3A, the second conveying track 210, and the building drum 300 during the process of conveying the support rubber to the building drum 300 from a top view angle. Figure 4A and Figure 4B further show the docking process of the transitional drum 11 and the building drum 300 from a side view angle.

[0110] As Figure 3AAs shown, the first transitional conveying device 1A moves to the loading station where it is docked with the first feeding device 3A. At this time, the rotary drive mechanism 12 drives the transitional drum 11 to rotate forward, so that the receiving surface 112 of the transitional drum 11 winds up the strip-shaped support rubber provided by the first feeding device 3A.

[0111] As Figure 3B shown, the first transitional conveying device 1A moves to the working station where it is aligned with the forming drum 300.

[0112] As Figure 3C and 4B shown, the first transitional conveying device 1A moves back and forth to be docked with the forming drum 300. The docking drive mechanism 13 drives the transitional drum 11 to move towards the forming drum 300 to the Figure 3C and 4B shown docking position with the forming drum 300, so that the head of the support rubber on the receiving surface 112 of the transitional drum 11 is bonded to the PA composite layer on the forming drum 300. Subsequently, the rotary drive mechanism 12 can drive the transitional drum 11 to rotate in the reverse direction to output the support rubber, and at the same time, the forming drum 300 rotating forward will synchronously wind up the support rubber.

[0113] After the support rubber is completely transferred from the transitional drum 11 to the forming drum 300, the docking drive mechanism 13 can drive the transitional drum 11 to move away from the forming drum 300 to reset to the Figure 3B state. Next, the linear movement drive mechanism 14 drives the transitional drum 11 to move horizontally to the support rubber loading station.

[0114] As Figure 5 shown, in the embodiment of the present invention, preferably, thorns 113 extending along the radial direction of the transitional drum 11 are provided on the receiving surface 112 of the transitional drum 11. When the transitional drum 11 receives the support rubber provided by the first feeding device, the above-mentioned thorns 113 can partially penetrate into the support rubber, so as to play a role in fixing the support rubber and prevent the support rubber from falling off when the transitional drum 11 rotates. Further, preferably, an adsorption part 114 (such as an adsorption hole connected to an external vacuum source) capable of adsorbing the support rubber is also provided on the above-mentioned receiving surface 112. Based on production experience, the end part of the support rubber is the part most likely to be separated from the transitional drum 11. Therefore, the above-mentioned adsorption part 114 is correspondingly provided at least at the part of the receiving surface 112 for receiving the end of the support rubber.

[0115] Since the bonding position of the support rubber on the forming drum 300 is symmetric about the center of the forming drum, in this embodiment, two transitional drums 11 are provided. The two transitional drums 11 are coaxially arranged, and both of the two transitional drums 11 are provided with receiving surfaces 112, so that the two transitional drums 11 can each receive a support rubber, and further enable the first transitional conveying device 1A to simultaneously transfer two support rubbers to the forming drum 300.

[0116] To adapt to the production of tire embryos of different specifications, the first transition conveying device 1A further includes an opening and closing drive mechanism 16 for adjusting the distance between the two transition drums 11 so that the transition drums 11 can match the support rubber bonding positions of the tire embryos of corresponding specifications on the forming drum 300.

[0117] Specifically, as Figure 3A and Figure 5 shown, the rotary drive mechanism 12 includes a spline shaft 121 and a rotary drive portion 122. The drum bodies 111 of the two transition drums 11 are slidably mounted on the spline shaft 121 by means of a spline structure so that when the rotary drive portion 122 drives the spline shaft 121 to rotate, the two drum bodies 111 can rotate together with the spline shaft 121. The opening and closing drive mechanism 16 includes a lead screw 161 and an opening and closing drive portion 162. The spline shaft 121 has a hollow structure, and the lead screw 161 is coaxially disposed inside the spline shaft 121. A first thread section and a second thread section with opposite screw directions are provided along the axial direction of the lead screw 161. The spline structures of the two drum bodies 111 pass through the through grooves axially opened in the spline shaft 121 and extend into the inner cavity of the spline shaft 121, and are respectively screwed to the first thread section and the second thread section. When the opening and closing drive portion 162 drives the lead screw 161 to rotate, the two drum bodies 111 are driven by the first thread section and the second thread section with opposite screw directions, and slide and separate along the through grooves axially opened in the spline shaft 121 to obtain different distances.

[0118] Based on the structures of the above-mentioned rotary drive mechanism 12 and opening and closing drive mechanism 16, when the two drum bodies 111 receive or output the support rubber, the two drum bodies 111 rotate synchronously and the distance therebetween must remain unchanged. Therefore, when the rotary drive portion 122 drives the spline shaft 121 to rotate, the opening and closing drive portion 162 must simultaneously drive the lead screw 161 to rotate at a specific matching speed. When only the distance between the two drum bodies 111 needs to be adjusted, the rotary drive mechanism 12 is stopped, and the opening and closing drive mechanism 16 is operated, that is, the opening and closing drive portion 162 drives the lead screw 161 to rotate until the distance between the two drum bodies 111 reaches the required size.

[0119] When the transition drum 11 needs to rotate to receive or output the support rubber, the first servo motor drives the two drum bodies 111 to rotate through the first speed reducer, and at the same time, the opening and closing drive portion 162 is also required to rotate together so that the spline shaft 121 and the lead screw 161 rotate in the same direction and at the same speed.

[0120] Exemplarily, the rotation drive unit 122 includes a first servo motor, a first reducer connected to the output end of the first servo motor, and a synchronous pulley set connected between the output end of the first reducer and the spline shaft 121. The speed N1 of the first servo motor is set to 2000r / min, the reduction ratio i1 of the first reducer is 10, and the reduction ratio i2 of the synchronous pulley set is 2. The opening and closing drive unit 162 includes a second servo motor and a second reducer coaxially connected between the second servo motor and the lead screw 161. The speed of the first servo motor is set to N2, and the reduction ratio i3 of the second reducer is set to 5.

[0121] When the first servo motor drives the spline shaft 121 to rotate, the speed of the spline shaft 121 is N1 / i1 / i2=100r / min. At this time, the second servo motor needs to drive the screw 161 to rotate at the same speed of 100r / min, so the speed of the second servo motor should be N2=100*i3=500r / min.

[0122] like Figure 4A and Figure 4B As shown, the slide 15 is slidably mounted on the second conveying track 210, and the docking drive mechanism 13 specifically includes a slider 131, a slide rail 132 and a docking drive unit 133. The slider 131 is fixed on the slide 15, and the slide rail 132 is slidably mounted on the slider 131 along the radial direction of the forming drum 300, and the docking drive unit 133 is used to drive the slide rail 132 to slide on the slider 131. The transition drum 11 is rotatably mounted on the slide rail 132, and the axial direction of the transition drum 11 is parallel to the axial direction of the forming drum 300, so that when the docking drive unit 133 drives the slide rail 132 to slide on the slider 131, the transition drum 11 can be docked with the forming drum 300.

[0123] Exemplarily, the docking drive unit 133 may include a cylinder whose cylinder body is fixed to the slider 131 or the slide seat 15, and the piston rod of the cylinder is in driving connection with the slide rail 132. When the piston of the cylinder is extended or retracted, the slide rail 132 may be driven to drive the transition drum 11 to slide along the radial direction of the transition drum 11. Preferably, the docking drive unit 133 may further include a mechanism such as a screw nut pair that can fine-tune the stroke to assist the cylinder in driving the slide rail 132, thereby compensating for the insufficiency and deviation of the cylinder stroke, so that the transition drum 11 can be accurately docked with the forming drum 300. The above-mentioned cylinder and screw nut pair mechanism can adopt the existing technology, which will not be described in detail here.

[0124] In the prior art, there are already mature solutions for a carrier (such as the slide block 15) to move along a conveying track (such as the second conveying track 210). For example, a worm is arranged along the extending direction of the conveying track, and a worm wheel motor is installed on the carrier, so that the worm wheel of the worm wheel motor meshes with the worm. Thus, when the worm wheel motor rotates, the carrier can be driven to slide or roll along the conveying track. Therefore, in this embodiment, the specific structure of the moving driving mechanism 14 will not be elaborated and limited.

[0125] In the prior art, there are also mature rubber material feeding devices applied to tire building machines. In this embodiment, both the first feeding device 3A and the second feeding device 3B can adopt the prior art. Therefore, the specific structures of the two will not be elaborated and limited either.

[0126] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A tire building machine, comprising: A belt drum (100) for forming a tread component; A building drum (300) for forming a carcass component; A first conveying track (110) located vertically below the belt drum (100) and the building drum (300); It is characterized in that it further comprises: A first transition conveying device (1A); A post-pressing roller device (800) provided on the radial outer side of the building drum (300) for compounding the tread component and the carcass component; A second conveying track (210) arranged in parallel at an interval with the first conveying track (110), and the post-pressing roller device (800) and the first transition conveying device (1A) are movably installed on the second conveying track (210); and A first feeding device (3A) configured to supply a first rubber compound to the building drum (300) through the first transition conveying device (1A); The first transition conveying device (1A) has a first loading position for docking with the first feeding device (3A) and a first docking position for docking with the building drum (300) on the second conveying track (210); The post-pressing roller device (800) has a rolling position for docking with the building drum (300) and a first avoiding position for avoiding the first transition conveying device (1A) on the second conveying track (210).

2. The tire molding machine according to claim 1, wherein, The first transition conveying device (1A) includes: A transition drum (11) having a circular or arc-shaped receiving surface (112), and the receiving surface (112) is configured to receive the first rubber compound; A rotation driving mechanism (12) configured to drive the transition drum (11) to rotate; and A docking driving mechanism (13) configured to drive the transition drum (11) to move radially so that the transition drum (11) docks with the building drum (300).

3. The tire building machine according to claim 2, characterized in that, The first transition conveying device (1A) further includes: A sliding seat (15) provided on the second conveying track (210) for supporting the transition drum (11); A linear movement driving mechanism (14) for driving the sliding seat (15) to move along the second conveying track (210).

4. The tire molding machine according to claim 2, wherein, Two transition drums (11) are provided, and the two transition drums (11) are arranged in parallel at an interval, and the corresponding first feeding device (3A) can simultaneously supply the first rubber compound to the two transition drums (11).

5. The tire molding machine according to claim 4, characterized in that, The first transition conveying device (1A) further includes an opening and closing driving mechanism (16) for driving the two transition drums (11) to perform an opening and closing movement.

6. The tire molding machine according to claim 1, characterized in that The tire building machine further includes a second transition conveying device (1B) and a second feeding device (3B), and the second feeding device (3B) is configured to supply a second rubber compound to the building drum (300) through the second transition conveying device (1B).

7. The tire molding machine according to claim 6, characterized in that, The second transitional conveying device (1B) is movably mounted on the second conveying track (210). The second transitional conveying device (1B) has a second loading position for docking with the second feeding device (3B), a second docking position for docking with the forming drum (300), and a second avoidance position for avoiding the first transitional conveying device (1A).

8. The tire forming machine according to claim 1, characterized in that, One end of the second conveying track (210) extends beyond the first conveying track (110), and the first feeding device (3A) can be arranged on either side of the second conveying track (210).

9. The tire building machine according to claim 7, wherein, The tire building machine further includes a tread material feeding rack (200), a carcass material feeding rack (400), and a transfer ring (500). The tread material feeding rack (200) is used to provide tread components to the belt drum (100) to form a tread assembly. The carcass material feeding rack (400) is used to provide carcass components to the forming drum (300) to form a carcass assembly. The transfer ring (500) is used to transfer the tread assembly to the surface of the carcass assembly.

10. A tire forming method for a tire forming machine according to claim 9, characterized in that, Including: The tread material feeding rack (200) provides tread components to the belt drum (100) for forming a tread assembly. The carcass material feeding rack (400) provides partial carcass components for forming a carcass assembly to the forming drum (300). The first transitional conveying device (1A) moves along the second conveying track (210) to the first loading position to receive the first rubber compound provided by the first feeding device (3A). The post-pressure roller device (800) moves along the second conveying track (210) to the first avoidance position. The first transitional conveying device (1A) moves along the second conveying track (210) to the first docking position to provide the first rubber compound to the forming drum (300). The carcass material feeding rack (400) continues to provide the remaining carcass components for forming a carcass assembly to the forming drum (300) to form a carcass assembly on the forming drum (300). The transfer ring (500) transfers the tread assembly to the surface of the carcass assembly on the forming drum (300). The post-pressure roller device (800) moves along the second conveying track (210) to the rolling position to roll the tread assembly on the forming drum (300) so that the tread assembly is compounded with the carcass assembly to obtain a tire blank.

11. The tire forming method of the tire forming machine according to claim 10, characterized in that, The tire building method further includes: When the first transitional conveying device (1A) is in the first loading position, the second transitional conveying device (1B) moves along the second conveying track (210) to the second loading position to receive the second rubber compound provided by the second feeding device (3B). Before the first transitional conveying device (1A) moves along the second conveying track (210) to the first docking position, the second transitional conveying device (1B) moves along the second conveying track (210) to the second avoidance position. After the first transition conveying device (1A) supplies the first rubber compound to the forming drum (300), the first transition conveying device (1A) resets to the first loading position, and the second transition conveying device (1B) moves along the second conveying track (210) to the second docking position to supply the second rubber compound to the forming drum (300). Before the post-pressure roller device (800) moves along the second conveying track (210) to the rolling position, the second transition conveying device (1B) resets to the second loading position.

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