Tire production apparatus and tire production method

Abstract

The application relates to the technical field of tire production and discloses a tire production device and a tire production method, which comprise the following steps: controlling the distance between an upper mold and a lower mold to increase; making a lower sidewall mold and a plurality of lower tread molds be in a second opening position; placing a tire blank outside a capsule and making the lower end of the tire blank abut against the inner side of the lower sidewall mold; inflating the capsule; controlling the distance between the upper mold and the lower mold to decrease, making the upper sidewall mold and the plurality of upper tread molds move to a first opening position, and making the upper tread molds abut against the lower tread molds and be radially aligned; controlling the upper mold to descend at a first speed and synchronously controlling the upper sidewall mold to ascend relative to an upper guide ring at a second speed, the lower sidewall mold to descend relative to a lower guide ring at a third speed, the first speed being twice the second speed, and the second speed and the third speed being equal; and vulcanization shaping. The upper mold and the lower mold have high mold closing precision, can avoid tire blank deviation, and can avoid the problems of mold extrusion of rubber and generation of rubber edges of tires.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire production, in particular to a tire production device and a tire production method. BACKGROUND

[0002] In the tire production process, in order to meet the needs of tire pattern vulcanization, various production methods and equipment are adopted. For example, the use of a movable mold, a two-half mold, etc. However, for tires with patterns extending to the sidewall, due to factors such as pattern height, direction, and steel sheet structure, there is a problem of extrusion during tire production. SUMMARY

[0003] The present application provides a tire production device and a tire production method to solve the problem of extrusion during tire production.

[0004] In a first aspect, the present application provides a tire production device, which comprises an upper mold, a lower mold, and a capsule, the upper mold comprising an upper guide ring, an upper sidewall mold, a plurality of upper tread molds, and an upper mold opening and closing driving device, the plurality of upper tread molds being slidably connected to the inner side of the upper guide ring and the upper sidewall mold, the upper sidewall mold and the plurality of upper tread molds having a first closed position and a first open position, in the first closed position, the cavity surface of the upper sidewall mold and the plurality of upper tread molds is connected, in the first open position, the top surface of the upper tread mold is lowered relative to the top surface of the upper guide ring, the cavity surface of the upper sidewall mold and the plurality of upper tread molds is separated, and the joint between the upper tread mold and the upper sidewall mold reaches a maximum value, the upper mold opening and closing driving device is connected to the upper sidewall mold and / or the upper tread mold, and can at least drive the upper sidewall mold and the plurality of upper tread molds to move from the first closed position to the first open position; the lower mold comprises a lower guide ring, a lower sidewall mold, a plurality of lower tread molds, and a lower mold opening and closing driving device, the plurality of lower tread molds being slidably connected to the inner side of the lower guide ring and the lower sidewall mold, the lower sidewall mold and the plurality of lower tread molds having a second closed position and a second open position, in the second closed position, the cavity surface of the lower sidewall mold and the plurality of lower tread molds is connected, in the second open position, the bottom surface of the lower sidewall mold is raised relative to the bottom surface of the lower guide ring, the cavity surface of the lower sidewall mold and the plurality of lower tread molds is separated, and the joint between the lower tread mold and the lower sidewall mold reaches a maximum value, the lower mold opening and closing driving device is connected to the lower sidewall mold and / or the lower tread mold, and can at least drive the lower sidewall mold and the plurality of lower tread molds to move from the second closed position to the second open position, and the following tire production method is adopted, comprising:

[0005] Controlling the distance between the upper mold and the lower mold to increase;

[0006] the lower sidewall mold and the plurality of lower tread molds are in the second open position;

[0007] placing the tire blank outside the bladder and abutting the lower end of the tire blank to the inner side of the lower sidewall mold;

[0008] inflating the bladder;

[0009] controlling the distance between the upper mold and the lower mold to decrease, moving the upper sidewall mold and the plurality of upper tread molds to the first open position, and abutting and aligning the upper tread molds and the lower tread molds in the radial direction;

[0010] controlling the upper mold to descend at a first speed, and synchronously controlling the upper sidewall mold to ascend relative to the upper guide ring at a second speed, and the lower sidewall mold to descend relative to the lower guide ring at a third speed, the first speed being twice the second speed, and the second speed being equal to the third speed, the upper tread molds sliding relative to the upper guide ring to the first closed position, and the lower tread molds sliding relative to the lower guide ring to the second closed position;

[0011] vulcanization and setting.

[0012] Advantages: first, the distance between the upper mold and the lower mold is controlled to increase, and the lower sidewall mold and the plurality of lower tread molds are in the second open position, so that there is a larger space between the upper mold and the lower mold, which is convenient for placing the tire blank. Then, the tire blank is placed outside the bladder, and the lower end of the tire blank is abutted to the inner side of the lower sidewall mold, so that the placement position of the tire blank can be positioned. Then, the bladder is inflated, which can support and further position the tire blank. Then, the distance between the upper mold and the lower mold is controlled to decrease, moving the upper sidewall mold and the plurality of upper tread molds to the first open position, and abutting and aligning the upper tread molds and the lower tread molds in the radial direction, which can ensure that the inner side of the upper sidewall mold can abut to the upper end of the tire blank to further position the tire blank. Then, the upper mold is controlled to descend at a first speed, and the upper sidewall mold is synchronously controlled to ascend relative to the upper guide ring at a second speed, and the lower sidewall mold is synchronously controlled to descend relative to the lower guide ring at a third speed, the first speed being twice the second speed, and the second speed being equal to the third speed, the upper tread molds sliding relative to the upper guide ring to the first closed position, and the lower tread molds sliding relative to the lower guide ring to the second closed position, which can ensure the mold closing precision, and the tire blank will not contact the joint between the upper tread mold and the upper sidewall mold, or the joint between the lower tread mold and the lower sidewall mold in advance. Then, the tire blank is vulcanized and set, and the tread pattern and the sidewall pattern are formed after vulcanization and setting. The tire blank is positioned and supported for multiple times, which can avoid the tire blank from deviating or tilting, and the tire blank will not contact the joint between the upper tread mold and the upper sidewall mold, or the joint between the lower tread mold and the lower sidewall mold in advance, which can avoid the problem of the mold extruding the rubber and the tire producing rubber edge.

[0013] In an alternative embodiment, the controlling the distance between the upper mold and the lower mold to increase comprises:

[0014] controlling the lower mold to remain stationary and controlling the upper mold to rise to a first position.

[0015] Beneficial effects: controlling the lower mold to remain stationary and controlling the upper mold to rise only, facilitating control and saving cost.

[0016] In an alternative embodiment, before the controlling the distance between the upper mold and the lower mold to decrease, the tire production method further comprises: controlling the upper mold opening and closing driving device to work to make the upper sidewall mold and the plurality of upper tread molds be in a first closed position.

[0017] Beneficial effects: controlling the upper mold opening and closing driving device to work to make the upper sidewall mold and the plurality of upper tread molds be in a first closed position, the upper sidewall mold is higher than the tire blank, and the inner side part of the upper sidewall mold is located on the side close to the upper end port of the tire blank and close to the central axis of the tire blank. Then, the upper sidewall mold and the plurality of upper tread molds are moved to a first open position. In the process of moving, the inner side part of the upper sidewall mold moves towards the direction close to the upper end port of the tire blank until the inner side part of the upper sidewall mold abuts against the upper end port of the tire blank. At this time, the upper sidewall mold and the plurality of upper tread molds are in the first open position, which can ensure further positioning of the tire blank, avoid deviation and inclination of the tire blank, and prevent the tire blank from contacting the joint between the upper tread mold and the upper sidewall mold or the joint between the lower tread mold and the lower sidewall mold in advance, thereby avoiding the problem of extrusion of the mold on the rubber material and the generation of rubber edge of the tire.

[0018] In an alternative embodiment, the inflating the bladder to make the pressure in the bladder reach a first preset pressure, the controlling the distance between the upper mold and the lower mold to decrease, the moving the upper sidewall mold and the plurality of upper tread molds to the first open position, and the abutting and radial alignment of the upper tread mold and the lower tread mold comprise:

[0019] controlling the upper mold to descend relative to the lower mold to a second position, and controlling the upper mold opening and closing driving device to work to make the upper sidewall mold and the plurality of upper tread molds be in the first open position, at which time the inner side part of the upper sidewall mold abuts against the upper end port of the tire blank, and the upper tread mold and the lower tread mold are radially aligned;

[0020] inflating the bladder to make the pressure in the bladder reach a second preset pressure;

[0021] controlling the upper mold to descend relative to the lower mold to a third position, at which time the upper tread mold and the lower tread mold abut.

[0022] Beneficial effects: inflating the capsule to make the pressure in the capsule reach the first preset pressure, the capsule can form preliminary support to the tire blank; then controlling the upper mold to descend to the second position relative to the lower mold, controlling the upper mold opening and closing driving device to work to make the upper tire side mold and the plurality of upper tread molds be in the first opening position, which can ensure that the inner side of the upper tire side mold abuts against the upper end of the tire blank, and the upper tread mold is aligned with the lower tread mold in the radial direction, so that the subsequent upper mold and lower mold can be ensured to be synchronized to close; then inflating the capsule to make the pressure in the capsule reach the second preset pressure, the capsule further supports and positions the tire blank, avoiding the tire blank from deviating and tilting, and the tire blank will not contact the joint between the upper tread mold and the upper tire side mold or the joint between the lower tread mold and the lower tire side mold in advance, which can avoid the problems of extruding the rubber material and generating the rubber edge of the tire.

[0023] In an optional embodiment, the tire production device comprises an upper clamping assembly and a lower clamping assembly, the upper clamping assembly clamps the upper end of the capsule, and the lower clamping assembly clamps the lower end of the capsule, when the upper mold descends to the second position relative to the lower mold, the upper tire side mold abuts against the upper clamping assembly, and the control of the upper mold to descend to the third position relative to the lower mold comprises:

[0024] The upper tire side mold applies pressure to the upper clamping assembly to drive the upper clamping assembly to descend synchronously with the upper mold;

[0025] The lower mold opening and closing driving device applies driving force to the lower tire side mold to keep the lower tire side mold and the lower tread mold static relative to the lower guide ring.

[0026] Beneficial effects: when the upper mold descends to the second position relative to the lower mold, the upper tire side mold abuts against the upper clamping assembly, so that in the process of controlling the upper mold to descend to the third position relative to the lower mold, the upper tire side mold applies pressure to the upper clamping assembly to drive the upper clamping assembly to descend synchronously with the upper mold, and the lower mold opening and closing driving device applies driving force to the lower tire side mold to keep the lower tire side mold and the lower tread mold static relative to the lower guide ring, which can avoid the problems that when the upper clamping assembly descends synchronously with the upper mold, the tire blank deforms due to the pressure applied by the upper tire side mold, the lower tire side mold and the lower tread mold move downward in advance, the upper and lower ends of the tire blank deform synchronously, the tire blank does not deviate, and the tire blank does not enter the gap between the lower tire side mold and the lower tread mold to cause the problems of extruding the rubber material and generating the rubber edge.

[0027] In an optional embodiment, the vulcanization shaping comprises: inflating the capsule to make the pressure in the capsule reach the third preset pressure, and performing the vulcanization shaping.

[0028] Beneficial effects: By inflating the capsule to make the pressure in the capsule reach the third preset pressure, it can ensure that the tire blank keeps in contact with the upper sidewall mold, the upper tread mold, the lower sidewall mold and the lower tread mold, so as to form the tread pattern and the sidewall pattern after vulcanization.

[0029] In an alternative embodiment, the tire production device comprises a lower fixed assembly, the lower guide ring is fixed to the lower fixed assembly, the lower mold opening and closing driving device is arranged on the lower fixed assembly or the lower guide ring and connected with the lower sidewall mold and / or the lower tread mold, the bottom of the lower guide ring is provided with a cleaning hole, the space between the lower sidewall mold and the lower fixed assembly is communicated with the cleaning hole, and the tire production method further comprises:

[0030] Cleaning the space between the lower sidewall mold and the lower fixed assembly through the cleaning hole.

[0031] Beneficial effects: By cleaning the space between the lower sidewall mold and the lower fixed assembly, the problem that impurities, foreign matters and the like in the air enter the space between the lower sidewall mold and the lower fixed assembly during tire vulcanization, resulting in insufficient mold closing precision and tire edge, is solved.

[0032] In an alternative embodiment, the cleaning of the space between the lower sidewall mold and the lower fixed assembly through the cleaning hole comprises: connecting a gas source at the outer end of the cleaning hole, and blowing gas to the space between the lower sidewall mold and the lower fixed assembly.

[0033] Beneficial effects: By connecting the gas source at the outer end of the cleaning hole, the space between the lower sidewall mold and the lower fixed assembly can be easily cleaned, and the cleaning efficiency can be improved.

[0034] In an alternative embodiment, the upper clamping assembly comprises an upper clamping part and an upper ring, the lower clamping assembly comprises a lower clamping part and a lower ring, when the upper mold is lowered to the second position relative to the lower mold, the upper sidewall mold abuts against the upper ring, when the lower sidewall mold and the plurality of lower tread molds are in the second open position, the lower sidewall mold abuts against the lower ring, and the tire production device further comprises:

[0035] An upper driving device connected with the upper ring and capable of driving the upper ring to rise and fall;

[0036] A lower driving device connected with the lower ring and capable of driving the lower ring to rise and fall;

[0037] An upper fixed assembly, the upper guide ring is fixed to the upper fixed assembly, and the upper mold opening and closing driving device is arranged on the upper fixed assembly and connected with the upper sidewall mold and / or the upper tread mold.

[0038] In an alternative embodiment, the outer side surface of the upper tread mold is provided with one of a first guide strip and a first guide groove, and the inner side surface of the upper guide ring is provided with the other of the first guide strip and the first guide groove, and the first guide strip and the first guide groove are in sliding fit;

[0039] And / or, the upper side of the upper tread mold is provided with one of an upper sliding block and an upper sliding groove, and the upper side of the upper side mold is provided with the other of the upper sliding block and the upper sliding groove, and the upper sliding block and the upper sliding groove are in sliding fit;

[0040] And / or, the outer side surface of the lower tread mold is provided with one of a second guide strip and a second guide groove, and the inner side surface of the lower guide ring is provided with the other of the second guide strip and the second guide groove, and the second guide strip and the second guide groove are in sliding fit;

[0041] And / or, the lower side of the lower tread mold is provided with one of a lower sliding block and a lower sliding groove, and the lower side of the lower side mold is provided with the other of the lower sliding block and the lower sliding groove, and the lower sliding block and the lower sliding groove are in sliding fit.

[0042] In a second aspect, the present application also provides a tire production method, which uses the tire production device to produce tires. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0044] Figure 1 A schematic view of a tire production device of an embodiment of the present application when the upper mold is raised to the first position, and the lower side mold and the plurality of lower tread molds are in the second open position;

[0045] Figure 2 A schematic view of a tire production device of an embodiment of the present application after placing the tire blank;

[0046] Figure 3 A schematic view of a tire production device of an embodiment of the present application after inflating the capsule;

[0047] Figure 4 A schematic view of a tire production device of an embodiment of the present application when the upper mold is lowered to the second position relative to the lower mold, and the upper side mold and the plurality of upper tread molds are in the first open position;

[0048] Figure 5Fig. 3 is a schematic view of a tire production apparatus according to an embodiment of the present application when the upper mold is lowered relative to the lower mold to a third position;

[0049] Figure 6 Fig. 4 is a schematic view of a tire production apparatus according to an embodiment of the present application when the upper sidewall mold and the plurality of upper tread molds are in a first closed position, the lower sidewall mold and the plurality of lower tread molds are in a second closed position, and the upper tread mold and the lower tread mold abut and are radially aligned;

[0050] Figure 7 Fig. 5 is a schematic view of a tire production apparatus according to an alternative embodiment of the present application.

[0051] BRIEF DESCRIPTION OF DRAWINGS

[0052] 101, upper guide ring; 102, upper sidewall mold; 103, upper tread mold; 104, upper mold opening and closing driving device; 105, upper support plate; 106, upper cross beam;

[0053] 201, lower guide ring; 202, lower sidewall mold; 203, lower tread mold; 204, lower mold opening and closing driving device; 2041, first elastic driving member; 2042, second elastic driving member; 205, lower support plate; 206, lower cross beam; 207, cleaning hole;

[0054] 3, capsule;

[0055] 4, upper clamping assembly; 401, upper clamping part; 402, upper ring; 5, lower clamping assembly; 501, lower clamping part; 502, lower ring;

[0056] 6, green tire. DETAILED DESCRIPTION

[0057] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0058] The embodiments of the present application will be described below with reference to the drawings. Figures 1 to 7

[0059] ​According to an embodiment of the present application, in one aspect, a tire production device is provided, which comprises an upper mold, a lower mold and a capsule 3. The upper mold comprises an upper guide ring 101, an upper sidewall mold 102, a plurality of upper tread molds 103 and an upper mold opening and closing driving device 104. The plurality of upper tread molds 103 are slidably connected to the inner side of the upper guide ring 101 and the upper sidewall mold 102. The upper sidewall mold 102 and the plurality of upper tread molds 103 have a first closed position and a first open position. In the first closed position, the cavity surface of the upper sidewall mold 102 and the plurality of upper tread molds 103 are connected. In the first open position, the top surface of the upper tread mold 103 is lowered relative to the top surface of the upper guide ring 101, the cavity surface of the upper sidewall mold 102 and the plurality of upper tread molds 103 are separated, and the joint between the upper tread mold 103 and the upper sidewall mold 102 reaches the maximum value. The upper mold opening and closing driving device 104 is connected to the upper sidewall mold 102 and / or the upper tread mold 103, and can at least drive the upper sidewall mold 102 and the plurality of upper tread molds 103 to move from the first closed position to the first open position. The lower mold comprises a lower guide ring 201, a lower sidewall mold 202, a plurality of lower tread molds 203 and a lower mold opening and closing driving device 204. The plurality of lower tread molds 203 are slidably connected to the inner side of the lower guide ring 201 and the lower sidewall mold 202. The lower sidewall mold 202 and the plurality of lower tread molds 203 have a second closed position and a second open position. In the second closed position, the cavity surface of the lower sidewall mold 202 and the plurality of lower tread molds 203 are connected. In the second open position, the bottom surface of the lower sidewall mold 202 is raised relative to the bottom surface of the lower guide ring 201, the cavity surface of the lower sidewall mold 202 and the plurality of lower tread molds 203 are separated, and the joint between the lower tread mold 203 and the lower sidewall mold 202 reaches the maximum value. The lower mold opening and closing driving device 204 is connected to the lower sidewall mold 202 and / or the lower tread mold 203, and can at least drive the lower sidewall mold 202 and the plurality of lower tread molds 203 to move from the second closed position to the second open position. The tire production device adopts the following production method, which comprises:

[0060] S1. Control the distance between the upper mold and the lower mold to increase;

[0061] S2. The lower sidewall mold 202 and the plurality of lower tread molds 203 are in the second open position;

[0062] S3. The tire blank 6 is placed outside the capsule 3, and the lower end of the tire blank 6 abuts against the inner side of the lower sidewall mold 202;

[0063] S4. Inflating the capsule 3;

[0064] S5. Controlling the distance between the upper mold and the lower mold to decrease, moving the upper sidewall mold 102 and the plurality of upper tread molds 103 to the first open position, and making the upper tread mold 103 abut and align radially with the lower tread mold 203;

[0065] S6. The upper mold is controlled to descend at a first speed, and the upper sidewall mold 102 is controlled to ascend relative to the upper guide ring 101 at a second speed, and the lower sidewall mold 202 is controlled to descend relative to the lower guide ring 201 at a third speed, the first speed is twice the second speed, and the second speed is equal to the third speed, the upper tread mold 103 slides relative to the upper guide ring 101 to a first closed position, and the lower tread mold 203 slides relative to the lower guide ring 201 to a second closed position;

[0066] S7. vulcanization and setting.

[0067] In this embodiment, the distance between the upper mold and the lower mold is first controlled to increase, and the lower sidewall mold 202 and the plurality of lower tread molds 203 are in the second open position, at this time, the upper mold and the lower mold have a larger space, which is convenient for placing the tire blank 6. Then the tire blank 6 is placed outside the bladder 3, and the lower end of the tire blank 6 is in abutment with the inner side of the lower sidewall mold 202, which can position the placement position of the tire blank 6. Then the bladder 3 is inflated, which can support and further position the tire blank 6. Then the distance between the upper mold and the lower mold is controlled to decrease, the upper sidewall mold 102 and the plurality of upper tread molds 103 are moved to the first open position, and the upper tread mold 103 is in abutment with the lower tread mold 203 and is radially aligned, which can ensure that the inner side of the upper sidewall mold 102 can be in abutment with the upper end of the tire blank 6 to further position the tire blank 6. Then the upper mold is controlled to descend at a first speed, and the upper sidewall mold 102 is controlled to ascend relative to the upper guide ring 101 at a second speed, and the lower sidewall mold 202 is controlled to descend relative to the lower guide ring 201 at a third speed, the first speed is twice the second speed, and the second speed is equal to the third speed, during the process, the upper tread mold 103 slides relative to the upper guide ring 101 to the first closed position, and the lower tread mold 203 slides relative to the lower guide ring 201 to the second closed position, which can ensure the mold closing precision, and the tire blank 6 will not contact the joint between the upper tread mold 103 and the upper sidewall mold 102, or the joint between the lower tread mold 203 and the lower sidewall mold 202 in advance, and then vulcanization and setting is performed, and the tread pattern and the sidewall pattern are formed after vulcanization and setting. The tire blank 6 is positioned and supported multiple times, which can avoid the tire blank 6 from being deviated or inclined, and the tire blank 6 will not contact the joint between the upper tread mold 103 and the upper sidewall mold 102, or the joint between the lower tread mold 203 and the lower sidewall mold 202 in advance, which can avoid the problem of extruding the rubber by the mold and the problem of the tire having rubber edges.

[0068] It should be noted that, in the first closed position, the top surface of the upper sidewall mold 102 is flush with the top surface of the upper guide ring 101, and / or the upper sidewall mold 102 is connected with the cavity surface of the plurality of upper tread molds 103. In the first open position, the top surface of the upper sidewall mold 102 is lowered relative to the top surface of the upper guide ring 101, the upper sidewall mold 102 is separated from the cavity surface of the plurality of upper tread molds 103, and the joint between the upper tread mold 103 and the upper sidewall mold 102 reaches the maximum value.

[0069] In the second closed position, the bottom surface of the lower sidewall mold 202 is flush with the bottom surface of the lower guide ring 201, and / or the lower sidewall mold 202 is connected to the cavity surface of the plurality of lower tread molds 203. In the second open position, the bottom surface of the lower sidewall mold 202 is raised relative to the bottom surface of the lower guide ring 201, the lower sidewall mold 202 is separated from the cavity surface of the plurality of lower tread molds 203, and the joint between the lower tread mold 203 and the lower sidewall mold 202 reaches a maximum value.

[0070] It should be noted that in actual production, the above-mentioned S1 step to S7 step can be executed in sequence, but in some cases, it can be executed in a different order from here, for example, the order of the above-mentioned S2 step and S3 step can be exchanged, that is, the tire blank 6 can be placed outside the capsule 3 first, and then the lower end of the tire blank 6 is abutted with the inner side of the lower sidewall mold 202, and then the lower sidewall mold 202 and the plurality of lower tread molds 203 are in the second open position.

[0071] Specifically, in the above-mentioned S6 step, the lower guide ring 201 remains stationary, the upper guide ring 101 moves downward along the vertical direction at a speed of V1, the upper tread mold 103 and the upper sidewall mold 102 move downward along the vertical direction at a speed of V2, and the lower tread mold 203 and the lower sidewall mold 202 move downward along the vertical direction at a speed of V3, V1=2V2=2V3.

[0072] Specifically, in one embodiment, the lower mold opening and closing driving device 204 is a telescopic device, such as an oil cylinder, an air cylinder, an electric cylinder, etc. The driving rod of the lower mold opening and closing driving device 204 is connected with the lower sidewall mold 202, for driving the lower sidewall mold 202 to rise along the vertical direction and the lower tread mold 203 to slide along the inner side surface of the lower guide ring 201. The above-mentioned S2 step of making the lower sidewall mold 202 and the plurality of lower tread molds 203 in the second open position specifically includes: controlling the lower mold opening and closing driving device 204 to work to make the sidewall mold and the plurality of lower tread molds 203 in the second open position.

[0073] In an alternative embodiment, the lower mold opening and closing drive device 204 includes multiple sets of elastic drive components. The elastic force of the elastic drive components can drive the lower tire sidewall mold 202 and multiple lower tire tread molds 203 to the second open position. In this embodiment, after executing step S1, step S2 is automatically executed, that is, the lower tire sidewall mold 202 and multiple lower tire tread molds 203 automatically move to the second open position under the drive of the elastic drive components. When the mold is closed, the upper tire tread mold 103 abuts against the lower tire tread mold 203 and aligns radially. Then, the upper mold is controlled to descend at a first speed, and the upper tire sidewall mold 102 is simultaneously controlled to rise relative to the upper guide ring 101 at a second speed, and the lower tire sidewall mold 202 descends relative to the lower guide ring 201 at a third speed. At this time, the force between the upper tire tread mold 103 and the lower tire tread mold 203 can overcome the elastic force of the elastic drive components, causing the upper tire tread mold 103 to slide relative to the upper guide ring 101 to the first closed position, and the lower tire tread mold 203 to slide relative to the lower guide ring 201 to the second closed position.

[0074] In one embodiment, step S1 includes: controlling the lower mold to remain stationary and controlling the upper mold to rise to a first position.

[0075] In this embodiment, the lower mold is kept stationary while the upper mold is raised, which facilitates control and saves costs.

[0076] Specifically, such as Figure 1 As shown, when the upper mold rises to the first position, its height is H1. It should be noted that the height of the upper mold can specifically refer to the distance between the upper mold and a certain set position, or the distance between the upper mold and the ground.

[0077] In an alternative embodiment, step S1 above may be: controlling the upper mold to rise and controlling the lower mold to fall, or controlling the upper mold to remain stationary and controlling the lower mold to fall.

[0078] In one embodiment, prior to step S5 above, the tire production method further includes: controlling the upper opening and closing mold drive device 104 to operate so that the upper tire sidewall mold 102 and the plurality of upper tire tread molds 103 are in a first closed position.

[0079] In this embodiment, the upper opening and closing mold driving device 104 is controlled to operate so that the upper sidewall mold 102 and the plurality of upper tread molds 103 are in the first closed position. The upper sidewall mold 102 is higher than the tire blank 6, and the inner part of the upper sidewall mold 102 is located on the side of the upper terminal opening of the tire blank 6 near the central axis of the tire blank 6. Then, the upper sidewall mold 102 and the plurality of upper tread molds 103 are moved to the first open position. During the movement, the inner part of the upper sidewall mold 102 faces the upper terminal opening of the tire blank 6. As the opening moves, the inner part of the upper sidewall mold 102 will abut against the upper terminal opening of the tire blank 6. At this time, when the upper sidewall mold 102 and multiple upper tread molds 103 are in the first open position, it can ensure further positioning of the tire blank 6 and prevent the tire blank 6 from shifting or tilting. The tire blank 6 will not prematurely contact the joint between the upper tread mold 103 and the upper sidewall mold 102, or the joint between the lower tread mold 203 and the lower sidewall mold 202, thus avoiding the problem of mold squeezing rubber material and tire rubber edge formation.

[0080] In one specific embodiment, when the upper mold is raised to the first position, the upper mold opening and closing drive device 104 can be simultaneously controlled to operate so that the upper sidewall mold 102 and multiple upper tread molds 103 are in the first closed position to reduce heat dissipation of the upper mold. In this embodiment, after the tire blank 6 is placed, the upper sidewall mold 102 is higher than the tire blank 6, and the inner part of the upper sidewall mold 102 is located on the side of the upper terminal opening of the tire blank 6 close to the central axis of the tire blank 6. Then, the upper sidewall mold 102 and multiple upper tread molds 103 are moved to the first open position. During the movement, the inner part of the upper sidewall mold 102 moves towards the direction close to the upper terminal opening of the tire blank 6, and the inner part of the upper sidewall mold 102 will abut against the upper terminal opening of the tire blank 6. At this time, the upper sidewall mold 102 and multiple upper tread molds 103 are in the first open position.

[0081] In one specific embodiment, the upper opening and closing mold driving device 104 can drive the upper sidewall mold 102 and multiple upper tread molds 103 to move between a first closed position and a first open position. The upper opening and closing mold driving device 104 is a telescopic device, such as a hydraulic cylinder, pneumatic cylinder, or electric cylinder. The driving rod of the upper opening and closing mold driving device 104 is fixedly connected to the upper sidewall mold 102 and is used to drive the upper sidewall mold 102 to move vertically relative to the upper guide ring 101.

[0082] In one embodiment, step S4 includes inflating capsule 3 to bring the pressure inside capsule 3 to a first preset pressure, and step S5 includes:

[0083] S51. Control the upper mold to descend to the second position relative to the lower mold, and control the upper opening and closing mold drive device 104 to work so that the upper side mold 102 and multiple upper tread molds 103 are in the first open position, the inner part of the upper side mold 102 abuts against the upper terminal opening of the tire blank 6, and the upper tread mold 103 and the lower tread mold 203 are aligned radially.

[0084] S52. Inflate capsule 3 to bring the pressure inside capsule 3 to the second preset pressure, further support and position the tire blank 6, prevent the tire blank 6 from shifting or tilting, and prevent the tire blank 6 from prematurely contacting the joint between the upper tread mold 103 and the upper side mold 102, or the joint between the lower tread mold 203 and the lower side mold 202, thus avoiding the problem of mold squeezing rubber material and tire rubber edge formation.

[0085] S53. Control the upper mold to descend to the third position relative to the lower mold, at which point the upper tread mold 103 and the lower tread mold 203 come into contact.

[0086] In this embodiment, the capsule 3 is inflated to reach a first preset pressure, allowing the capsule 3 to provide initial support for the tire blank 6. Then, the upper mold is lowered relative to the lower mold to a second position, and the upper mold opening and closing drive device 104 is activated to position the upper sidewall mold 102 and multiple upper tread molds 103 in a first open position. This ensures that the inner part of the upper sidewall mold 102 abuts against the upper terminal opening of the tire blank 6, and that the upper tread molds 103 and lower tread molds 203 are radially aligned, thereby ensuring the subsequent operation of the upper and lower molds. Synchronous mold closing; then inflating capsule 3 to bring the pressure inside capsule 3 to the second preset pressure, capsule 3 further supports and positions the tire blank 6, preventing the tire blank 6 from shifting or tilting, and the tire blank 6 will not prematurely contact the joint between the upper tread mold 103 and the upper side mold 102, or the joint between the lower tread mold 203 and the lower side mold 202, which can avoid the problem of mold squeezing rubber material and tire rubber edge; then controlling the upper mold to descend relative to the lower mold to the third position, so that the upper tread mold 103 and the lower tread mold 203 abut.

[0087] In one specific embodiment, the first preset pressure is preferably 0.01-0.08 MPa, and the second preset pressure is preferably 0.06-0.1 MPa.

[0088] In one specific embodiment, controlling the upper mold to descend to the second position relative to the lower mold includes: controlling the upper mold to descend to the second position while the lower mold remains stationary; when the upper mold descends to the second position, as... Figure 4 As shown, the height of the upper mold is H2.

[0089] In one specific embodiment, controlling the upper mold to descend relative to the lower mold to the third position includes: controlling the upper mold to descend to the third position while the lower mold remains stationary; when the upper mold descends to the third position, as... Figure 5 As shown, the height of the upper mold is H3, where H1 > H2 > H3.

[0090] In one embodiment, the tire production apparatus includes an upper clamping assembly 4 and a lower clamping assembly 5. The upper clamping assembly 4 clamps the upper end of the capsule 3, and the lower clamping assembly 5 clamps the lower end of the capsule 3. When the upper mold descends to a second position relative to the lower mold, the upper tire sidewall mold 102 abuts against the upper clamping assembly 4. The above-mentioned step S53 includes:

[0091] The upper side mold 102 applies pressure to the upper clamping assembly 4 to drive the upper clamping assembly 4 to descend synchronously with the upper mold;

[0092] The lower opening and closing mold driving device 204 applies a driving force to the lower tire side mold 202, so that the lower tire side mold 202 and the lower tire tread mold 203 remain stationary relative to the lower guide ring 201.

[0093] In this embodiment, when the upper mold descends to the second position relative to the lower mold, the upper tire side mold 102 abuts against the upper clamping assembly 4. Therefore, during the process of controlling the upper mold to descend to the third position relative to the lower mold, the upper tire side mold 102 applies pressure to the upper clamping assembly 4 to drive the upper clamping assembly 4 to descend synchronously with the upper mold. By applying a driving force to the lower tire side mold 202 through the lower mold opening and closing device, it can be ensured that the lower tire side mold 202 and the lower tire tread mold 203 remain stationary relative to the lower guide ring 201, preventing the upper clamping assembly 4 from descending with the upper mold. During the synchronous descent, since the tire blank 6 has been positioned, the capsule supports the tire blank 6. When the upper tire side mold 102 applies pressure to the tire blank 6, causing the tire blank 6 to deform, the lower tire side mold 202 moves downward. The lower tire side mold 202 and the lower tire tread mold 203 close in advance, which can ensure that the upper and lower ends of the tire blank 6 deform synchronously, prevent the tire blank 6 from shifting, and prevent the tire blank 6 from entering the gap between the lower tire side mold 202 and the lower tire tread mold 203, which would cause problems such as squeezing of rubber material and rubber edge formation.

[0094] Specifically, in step S2, the lower tire sidewall mold 202 and multiple lower tire tread molds 203 are placed in the second open position, at which point the lower clamping assembly 5 abuts against the lower tire sidewall mold 202. Further, in steps S2-S7, the lower clamping assembly 5 remains in contact with the lower tire sidewall mold 202, and in step S6, the lower clamping assembly 5 passively follows the lower tire sidewall mold 202 downwards, at least under the action of the capsule 3, to avoid extrusion problems caused by the lower clamping assembly 5 separating from the lower tire sidewall mold 202.

[0095] In one specific embodiment, the upper clamping component 4 includes an upper clamping part 401 and an upper ring 402, and the lower clamping component 5 includes a lower clamping part 501 and a lower ring 502. When the upper mold descends to the second position relative to the lower mold, the upper tire side mold 102 abuts against the upper ring 402. In the above S2 step, the lower ring 502 abuts against the lower tire side mold 202.

[0096] In one embodiment, step S7 includes: inflating capsule 3 to bring the pressure inside capsule 3 to a third preset pressure, and then performing vulcanization and shaping. The third preset pressure is 1-2.4 MPa.

[0097] In this embodiment, by inflating the capsule 3 to bring the pressure inside the capsule 3 to a third preset pressure, it can be ensured that the tire blank 6 remains in contact with the upper sidewall mold 102, the upper tread mold 103, the lower sidewall mold 202, and the lower tread mold 203, thereby forming the tread pattern and sidewall pattern after vulcanization and shaping.

[0098] In one specific embodiment, after vulcanization and shaping, the tire production method further includes performing steps S1 and S2 again, controlling the increase of the distance between the upper mold and the lower mold, and placing the lower tire sidewall mold 202 and multiple lower tire tread molds 203 in a second open position, so that the tire can be removed and the next round of production can continue after the tire is removed.

[0099] In one embodiment, the tire production apparatus includes a lower fixing assembly, a lower guide ring 201 fixed to the lower fixing assembly, a lower mold opening and closing drive device 204 disposed on the lower fixing assembly or the lower guide ring 201 and connected to the lower sidewall mold 202 and / or the lower tread mold 203, the bottom of the lower guide ring 201 having a cleaning hole 207, and the space between the lower sidewall mold 202 and the lower fixing assembly communicating with the cleaning hole 207. The tire production method further includes:

[0100] S8. Clean the space between the lower tire sidewall mold 202 and the lower fixing component through the cleaning hole 207.

[0101] In this embodiment, by cleaning the space between the lower tire sidewall mold 202 and the lower fixing component, the problems of insufficient mold closing accuracy and rubber edge formation on the tire caused by impurities and foreign objects in the air entering the space between the lower tire sidewall mold 202 and the lower fixing component during the tire vulcanization process are solved.

[0102] In one embodiment, step S8 includes connecting an air source to the outer end of the cleaning hole 207 and using gas to purge the space between the lower tire sidewall mold 202 and the lower fixing assembly.

[0103] In this embodiment, by connecting an air source to the outer end of the cleaning hole 207, it is convenient to clean the space between the lower tire sidewall mold 202 and the lower fixing component, which can improve cleaning efficiency.

[0104] In one specific embodiment, the lower fixing assembly includes a lower crossbeam 206 and a lower support plate 205. A lower guide ring 201 is fixedly connected to the lower support plate 205, and the lower support plate 205 is fixed to the lower crossbeam 206. The cleaning hole 207 and the space between the lower tire sidewall mold 202 and the lower support plate 205 are connected. The lower support plate 205 has an inner hole, through which impurities and foreign objects can be removed.

[0105] In other embodiments, tools can also be used to clean the space between the lower tire sidewall mold 202 and the lower fixing component.

[0106] In one embodiment, the upper clamping assembly 4 includes an upper clamping portion 401 and an upper ring 402, and the lower clamping assembly 5 includes a lower clamping portion 501 and a lower ring 502. When the upper mold descends to the second position relative to the lower mold, the upper tire sidewall mold 102 abuts against the upper ring 402. When the lower tire sidewall mold 202 and a plurality of lower tire tread molds 203 are in the second open position, the lower tire sidewall mold 202 abuts against the lower ring 502. The tire production device also includes an upper drive device, a lower drive device, an upper fixing assembly, and a lower fixing assembly.

[0107] The upper drive device is connected to the upper ring 402 and can drive the upper ring 402 to rise and fall; the lower drive device is connected to the lower ring 502 and can drive the lower ring 502 to rise and fall; the upper mold opening and closing drive device 104 is located on the upper fixed assembly and connected to the upper sidewall mold 102 and / or the upper tread mold 103; the lower guide ring 201 is fixed to the lower fixed assembly, and the lower mold opening and closing drive device 204 is located on the lower fixed assembly or the lower guide ring 201 and connected to the lower sidewall mold 202 and / or the lower tread mold 203. Specifically, the upper drive device and the lower drive device can be hydraulic cylinders, air cylinders, etc., and are equipped with overflow valves. When the force on the power output rod reaches a preset value, the overflow valve performs an overflow action, and the power output rod performs a retraction action. It should be noted that in this application, the upper fixed assembly is connected to hydraulic cylinders or other devices (not shown) to control the overall rise and fall of the upper mold.

[0108] When the upper sidewall mold 102 and the plurality of upper tread molds 103 are in the first closed position, the lower sidewall mold 202 and the plurality of lower tread molds 203 are in the second closed position, and the upper tread mold 103 and the lower tread mold 203 abut against each other and are aligned radially, the upper sidewall mold 102, the upper tread mold 103, the lower sidewall mold 202, the lower tread mold 203 and the capsule 3 define a cavity suitable for accommodating the tire.

[0109] In one embodiment, the inner surface of the upper guide ring 101 is a conical surface or multiple inclined surfaces that gradually expand from top to bottom, and the outer surface of the upper tread mold 103 is adapted to the inner surface of the upper guide ring 101; the inner surface of the lower guide ring 201 is a conical surface or multiple inclined surfaces that gradually expand from bottom to top, and the outer surface of the lower tread mold 203 is adapted to the inner surface of the lower guide ring 201.

[0110] In this embodiment, the inner surface of the upper guide ring 101 is a conical surface or multiple inclined surfaces that gradually expand from top to bottom. The outer surface of the upper tread mold 103 is adapted to the inner surface of the upper guide ring 101. Therefore, when the upper mold opening and closing drive device 104 drives the upper sidewall mold 102 to move vertically, the upper tread mold 103 slides along the inner surface of the upper guide ring 101 while simultaneously sliding relative to the upper sidewall mold 102 in the horizontal direction. The inner surface of the lower guide ring 201 is a conical surface or multiple inclined surfaces that gradually expand from bottom to top. The outer surface of the lower tread mold 203 is adapted to the inner surface of the lower guide ring 201. Therefore, when the lower mold opening and closing drive device 204 drives the lower sidewall mold 202 to move vertically, the lower tread mold 203 slides along the inner surface of the lower guide ring 201 while simultaneously sliding relative to the lower sidewall mold 202 in the horizontal direction.

[0111] In one embodiment, the outer surface of the upper tread mold 103 is provided with one of a first guide strip and a first guide groove, and the inner surface of the upper guide ring 101 is provided with the other of a first guide strip and a first guide groove, with the first guide strip slidingly engaged with the first guide groove; and / or, the upper tread mold 103 is provided with one of an upper slider and an upper sliding groove above it, and the upper sidewall mold 102 is provided with the other of an upper slider and an upper sliding groove, with the upper slider slidingly engaged with the upper sliding groove; and / or, the outer surface of the lower tread mold 203 is provided with one of a second guide strip and a second guide groove, and the inner surface of the lower guide ring 201 is provided with the other of a second guide strip and a second guide groove, with the second guide strip slidingly engaged with the second guide groove; and / or, the lower tread mold 203 is provided with one of a lower slider and a lower sliding groove below it, and the lower sidewall mold 202 is provided with the other of a lower slider and a lower sliding groove, with the lower slider slidingly engaged with the lower sliding groove.

[0112] In this embodiment, the outer surface of the upper tread mold 103 is provided with one of a first guide strip and a first guide groove, and the inner surface of the upper guide ring 101 is provided with the other of a first guide strip and a first guide groove. The first guide strip and the first guide groove are slidably engaged, allowing the upper tread mold 103 to slide smoothly relative to the upper guide ring 101. The upper tread mold 103 is provided with one of an upper slider and an upper sliding groove above it, and the upper sidewall mold 102 is provided with the other of an upper slider and an upper sliding groove. The upper slider and the upper sliding groove are slidably engaged, allowing the upper tread mold 103 to slide smoothly relative to the upper sidewall mold 102. The outer surface of the lower tread mold 203 is provided with one of a second guide strip and a second guide groove, and the inner surface of the lower guide ring 201 is provided with the other of a second guide strip and a second guide groove. The second guide strip and the second guide groove are slidably engaged, allowing the lower tread mold 203 to slide smoothly relative to the lower guide ring 201. The lower tire tread mold 203 is provided with one of a lower slide block and a lower slide groove, and the lower tire side mold 202 is provided with the other of a lower slide block and a lower slide groove. The lower slide block and the lower slide groove slide together, which allows the lower tire tread mold 203 to slide smoothly relative to the lower tire side mold 202.

[0113] Specifically, the first guide groove can be T-shaped or dovetail-shaped, and the shape of the first guide strip is adapted to the shape of the first guide groove.

[0114] Specifically, the second guide groove can be T-shaped or dovetail-shaped, and the shape of the second guide strip is adapted to the shape of the second guide groove.

[0115] Specifically, the upper slider can be a T-shaped block, and the shape of the upper groove is adapted to the shape of the upper slider.

[0116] Specifically, the sliding block can be a T-shaped block, and the shape of the sliding groove is adapted to the shape of the sliding block.

[0117] In one embodiment, a first limiting device is provided between the outer surface of the upper tread mold 103 and the inner surface of the upper guide ring 101, the first limiting device being used to limit the sliding stroke of the upper tread mold 103 relative to the upper guide ring 101; and / or, a second limiting device is provided between the upper tread mold 103 and the upper sidewall mold 102, the second limiting device being used to limit the sliding stroke of the upper tread mold 103 relative to the upper sidewall mold 102; and / or, a third limiting device is provided between the outer surface of the lower tread mold 203 and the inner surface of the lower guide ring 201, the third limiting device being used to limit the sliding stroke of the lower tread mold 203 relative to the lower guide ring 201; and / or, a fourth limiting device is provided between the lower tread mold 203 and the lower sidewall mold 202, the fourth limiting device being used to limit the sliding stroke of the lower tread mold 203 relative to the lower sidewall mold 202.

[0118] In one specific embodiment, the first limiting device includes a limiting pin and a limiting groove. The limiting pin is located on one of the inner side of the upper guide ring 101 and the outer side of the upper tread mold 103, and the limiting groove is located on the other of the inner side of the upper guide ring 101 and the outer side of the upper tread mold 103. When the limiting pin abuts against one end of the limiting groove, it can prevent the upper tread mold 103 from continuing to slide relative to the upper guide ring 101.

[0119] In one specific embodiment, the upper slider is fixed above the upper tread mold 103, the upper groove is provided on the upper sidewall mold 102, and the second limiting device includes a limiting block. When the limiting block abuts against the upper slider, it can restrict the upper slider from continuing to move outward relative to the upper sidewall mold 102.

[0120] In one specific embodiment, the third limiting device includes a limiting pin and a limiting groove. The limiting pin is located on one of the inner side of the lower guide ring 201 and the outer side of the lower tread mold 203, and the limiting groove is located on the other of the inner side of the lower guide ring 201 and the outer side of the lower tread mold 203. When the limiting pin abuts against one end of the limiting groove, it can prevent the lower tread mold 203 from continuing to slide relative to the lower guide ring 201.

[0121] In one specific embodiment, the lower slider is fixed below the lower tire tread mold 203, the lower slide groove is provided on the lower tire side mold 202, and the fourth limiting device includes a limiting block. When the limiting block abuts against the lower slider, it can restrict the lower slider from continuing to move outward relative to the lower tire side mold 202.

[0122] In one specific embodiment, the upper tire sidewall mold 102 can be a split structure, including an upper cover plate and an upper side plate. The upper tire tread mold 103 can be a split structure, including an upper tread block and an upper shell.

[0123] In one specific embodiment, the lower tire sidewall mold 202 can be a split structure, including a lower cover plate and a lower side plate. The lower tire tread mold 203 can be a split structure, including a lower tread block and a lower shell.

[0124] In one specific embodiment, the upper guide ring 101 can be a split structure, including a body and a connecting ring, with the body connected to the upper fixing component via the connecting ring. The lower guide ring 201 can also be a split structure, including a body and a connecting ring, with the body connected to the lower fixing component via the connecting ring.

[0125] In one specific embodiment, the upper fixing assembly includes an upper crossbeam 106 and an upper support plate 105. An upper guide ring 101 is fixedly connected to the upper support plate 105, and the upper support plate 105 is fixed to the upper crossbeam 106. An upper mold opening and closing drive device 104 is fixedly disposed above the upper tire sidewall mold 102, specifically mounted on the upper crossbeam 106. The upper mold opening and closing drive device 104 is a telescopic device, such as a hydraulic cylinder, pneumatic cylinder, or electric cylinder. The drive rod of the upper mold opening and closing drive device 104 is fixedly connected to the upper tire sidewall mold 102. A heating assembly can be provided on the upper support plate 105 to heat the mold.

[0126] In one specific embodiment, the lower fixing assembly includes a lower crossbeam 206 and a lower support plate 205. A lower guide ring 201 is fixedly connected to the lower support plate 205, and the lower support plate 205 is fixed to the lower crossbeam 206. A lower mold opening and closing drive device 204 is fixedly disposed below the lower tire side mold 202, specifically mounted on the lower crossbeam 206. The lower mold opening and closing drive device 204 is a telescopic device, such as a hydraulic cylinder, pneumatic cylinder, or electric cylinder. The drive rod of the lower mold opening and closing drive device 204 is fixedly connected to the lower tire side mold 202. A heating assembly can be provided on the lower support plate 205 to heat the mold.

[0127] In an alternative embodiment, the lower opening and closing mold drive device 204 includes multiple sets of elastic drive components, the elastic force of which can cause the lower tire sidewall mold 202 and multiple lower tire tread molds 203 to move from the second closed position to the second open position.

[0128] In this embodiment, when the mold is closed, the upper tread mold 103 and the lower tread mold 203 abut and are aligned radially. Then, the upper mold is controlled to descend at a first speed, and the upper sidewall mold 102 is simultaneously controlled to rise relative to the upper guide ring 101 at a second speed, while the lower sidewall mold 202 descends relative to the lower guide ring 201 at a third speed. At this time, the force between the upper tread mold 103 and the lower tread mold 203 can overcome the elastic force of the elastic drive assembly, causing the upper tread mold 103 to slide relative to the upper guide ring 101 to the first closed position, and the lower tread mold 203 to slide relative to the lower guide ring 201 to the second closed position.

[0129] Specifically in one embodiment, such as Figure 7 As shown, the elastic drive assembly includes a plurality of first elastic drive members 2041 distributed circumferentially. One end of the first elastic drive member 2041 is connected to the lower guide ring 201 or the lower support plate 205, and the other end is connected to the lower tire tread mold 203. The elastic drive assembly also includes a plurality of second elastic drive members 2042 distributed circumferentially. The two ends of the second elastic drive members 2042 are respectively connected to the lower tire sidewall mold 202 and the lower support plate 205.

[0130] When the current mold opening and closing drive device 204 includes multiple sets of elastic drive components, the end face of the upper tread mold 103 and the end face of the lower tread mold 203 are provided with mutually cooperating positioning blocks and positioning holes. When the mold is closed, the positioning blocks cooperate with the positioning holes to ensure the mold closing accuracy and limit the radial relative displacement between the corresponding upper tread mold 103 and lower tread mold 203.

[0131] In one specific embodiment, the lower fixing component includes a lower crossbeam 206 and a lower support plate 205. The lower guide ring 201 is fixedly connected to the lower support plate 205. The lower support plate 205 is fixed on the lower crossbeam 206. The cleaning hole 207 and the lower tire side mold 202 are connected to the space between the lower support plate 205 and the cleaning hole 207.

[0132] In one specific embodiment, the joint between the upper tread mold 103 and the upper sidewall mold 102, and the joint between the lower tread mold 203 and the lower sidewall mold 202, are all located within 25%-65% of the width W of the mold cavity side (corresponding to the tire shoulder position to the innermost side of the tire), and further within 30%-60%, for example 30%, 35%, 40%, 45%, 50%, 55%, and 60%.

[0133] Compared to existing technologies, tires with sidewall extension patterns vulcanized using the method described in this application significantly improve or even eliminate the rubber edge problem.

[0134] According to an embodiment of the present invention, in another aspect, a tire manufacturing method is provided, which uses the tire manufacturing apparatus provided in the above embodiments to manufacture tires.

[0135] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A tire manufacturing apparatus, characterized in that, The tire production apparatus includes an upper mold, a lower mold, and a bladder (3). The upper mold includes an upper guide ring (101), an upper sidewall mold (102), multiple upper tread molds (103), and an upper opening and closing mold driving device (104). The multiple upper tread molds (103) are slidably connected to the inner side of the upper guide ring (101) and the upper sidewall mold (102). The upper sidewall mold (102) and the multiple upper tread molds (103) have a first closed position and a first open position. In the first closed position, the upper sidewall mold (102) is connected to the cavity surface of the multiple upper tread molds (103). Then, in the first open position, the top surface of the upper tread mold (103) decreases in height relative to the top surface of the upper guide ring (101), the upper sidewall mold (102) separates from the cavity surfaces of the plurality of upper tread molds (103), and the seam between the upper tread mold (103) and the upper sidewall mold (102) reaches its maximum value. The upper opening and closing mold driving device (104) is connected to the upper sidewall mold (102) and / or the upper tread mold (103), and can at least drive the upper sidewall mold (102) and the plurality of upper tread molds (103) from the first closed position to the first closed position. The lower mold includes a lower guide ring (201), a lower tire sidewall mold (202), multiple lower tire tread molds (203), and a lower mold opening and closing drive device (204). The multiple lower tire tread molds (203) are slidably connected to the inner side of the lower guide ring (201) and the lower tire sidewall mold (202). The lower tire sidewall mold (202) and the multiple lower tire tread molds (203) have a second closed position and a second open position. In the second closed position, the lower tire sidewall mold (202) is connected to the cavity surface of the multiple lower tire tread molds (203). In the second open position, the lower tire sidewall mold (203)... The bottom surface of the lower guide ring (201) rises relative to the bottom surface of the lower sidewall mold (202), the cavity surfaces of the lower sidewall mold (202) and the multiple lower tread molds (203) separate, and the joint between the lower tread mold (203) and the lower sidewall mold (202) reaches its maximum value. The lower opening and closing mold driving device (204) is connected to the lower sidewall mold (202) and / or the lower tread mold (203), and can at least drive the lower sidewall mold (202) and the multiple lower tread molds (203) from the second closed position to the second open position, using the following tire production method, including: The distance between the upper mold and the lower mold is increased. Position the lower tire sidewall mold (202) and multiple lower tire tread molds (203) in the second open position; Place the tire blank (6) on the outside of the capsule (3) and make the lower terminal opening of the tire blank (6) abut against the inner part of the lower tire side mold (202); Inflate capsule (3); The distance between the upper mold and the lower mold is reduced, so that the upper tire side mold (102) and the multiple upper tire tread molds (103) are moved to the first open position, and the upper tire tread mold (103) abuts against the lower tire tread mold (203) and is aligned radially. The upper mold is controlled to descend at a first speed, and the upper tire sidewall mold (102) is simultaneously controlled to rise relative to the upper guide ring (101) at a second speed, and the lower tire sidewall mold (202) is controlled to descend relative to the lower guide ring (201) at a third speed. The first speed is twice the second speed, and the second speed and the third speed are equal. The upper tire tread mold (103) slides relative to the upper guide ring (101) to the first closed position, and the lower tire tread mold (203) slides relative to the lower guide ring (201) to the second closed position. Vulcanization and setting.

2. The tire production apparatus according to claim 1, characterized in that, The control of increasing the distance between the upper mold and the lower mold includes: The lower mold is kept stationary, while the upper mold is raised to the first position.

3. The tire production apparatus according to claim 1, characterized in that, Before controlling the reduction of the distance between the upper mold and the lower mold, the tire production method further includes: controlling the upper mold opening and closing drive device (104) to operate so that the upper tire sidewall mold (102) and the plurality of upper tire tread molds (103) are in a first closed position.

4. The tire production apparatus according to claim 1, characterized in that, The inflation of the capsule (3) includes: inflating the capsule (3) to bring the pressure inside the capsule (3) to a first preset pressure; controlling the distance between the upper mold and the lower mold to decrease, causing the upper tire sidewall mold (102) and multiple upper tire tread molds (103) to move to a first open position, and causing the upper tire tread mold (103) to abut against and be radially aligned with the lower tire tread mold (203), including: The upper mold is controlled to descend to a second position relative to the lower mold, and the upper opening and closing mold drive device (104) is controlled to work so that the upper tire side mold (102) and multiple upper tire tread molds (103) are in the first open position. At this time, the inner part of the upper tire side mold (102) abuts against the upper terminal of the tire blank (6), and the upper tire tread mold (103) and the lower tire tread mold (203) are aligned radially. Inflate the capsule (3) to bring the pressure inside the capsule (3) to a second preset pressure; The upper mold is controlled to descend to the third position relative to the lower mold, at which point the upper tread mold (103) and the lower tread mold (203) come into contact.

5. The tire production apparatus according to claim 4, characterized in that, The tire production apparatus includes an upper clamping assembly (4) and a lower clamping assembly (5). The upper clamping assembly (4) clamps the upper end of the capsule (3), and the lower clamping assembly (5) clamps the lower end of the capsule (3). When the upper mold descends to a second position relative to the lower mold, the upper tire sidewall mold (102) abuts against the upper clamping assembly (4). Controlling the upper mold to descend to a third position relative to the lower mold includes: The upper tire side mold (102) applies pressure to the upper clamping assembly (4) to drive the upper clamping assembly (4) to descend synchronously with the upper mold; The lower opening and closing mold driving device (204) applies a driving force to the lower tire side mold (202) so that the lower tire side mold (202) and the lower tire tread mold (203) remain stationary relative to the lower guide ring (201).

6. The tire production apparatus according to any one of claims 1 to 5, characterized in that, The vulcanization process includes: inflating the capsule (3) to bring the pressure inside the capsule (3) to a third preset pressure, and then performing vulcanization.

7. The tire production apparatus according to any one of claims 1 to 5, characterized in that, The tire production apparatus includes a lower fixing assembly, a lower guide ring (201) fixed to the lower fixing assembly, a lower mold opening and closing drive device (204) disposed on the lower fixing assembly or the lower guide ring (201) and connected to the lower tire sidewall mold (202) and / or the lower tire tread mold (203), a cleaning hole (207) provided at the bottom of the lower guide ring (201), and the space between the lower tire sidewall mold (202) and the lower fixing assembly communicating with the cleaning hole (207). The tire production method further includes: The space between the lower tire sidewall mold (202) and the lower fixing component is cleaned through the cleaning hole (207).

8. The tire production apparatus according to claim 7, characterized in that, The step of cleaning the space between the lower tire sidewall mold (202) and the lower fixing component through the cleaning hole (207) includes: connecting an air source to the outer end of the cleaning hole (207) and using gas to blow away the space between the lower tire sidewall mold (202) and the lower fixing component.

9. The tire production apparatus according to claim 5, characterized in that, The upper clamping assembly (4) includes an upper clamping part (401) and an upper ring (402), and the lower clamping assembly (5) includes a lower clamping part (501) and a lower ring (502). When the upper mold descends to the second position relative to the lower mold, the upper tire sidewall mold (102) abuts against the upper ring (402). When the lower tire sidewall mold (202) and multiple lower tire tread molds (203) are in the second open position, the lower tire sidewall mold (202) abuts against the lower ring (502). The tire production device further includes: The upper drive device is connected to the upper ring (402) and can drive the upper ring (402) to rise and fall; The lower drive device is connected to the lower ring (502) and can drive the lower ring (502) to rise and fall; The upper fixing component is provided, the upper guide ring (101) is fixed to the upper fixing component, and the upper opening and closing mold driving device (104) is provided on the upper fixing component and connected to the upper tire side mold (102) and / or the upper tire tread mold (103).

10. The tire production apparatus according to any one of claims 1 to 5, characterized in that, The outer side of the upper tread mold (103) is provided with one of a first guide strip and a first guide groove, and the inner side of the upper guide ring (101) is provided with the other of a first guide strip and a first guide groove, wherein the first guide strip and the first guide groove are slidably engaged. And / or, the upper tire tread mold (103) is provided with one of an upper slider and an upper groove, and the upper tire side mold (102) is provided with the other of an upper slider and an upper groove, wherein the upper slider and the upper groove are slidably engaged; And / or, the outer side of the lower tread mold (203) is provided with one of the second guide strip and the second guide groove, and the inner side of the lower guide ring (201) is provided with the other of the second guide strip and the second guide groove, wherein the second guide strip and the second guide groove are slidably engaged; And / or, the lower tire tread mold (203) is provided with one of a lower slider and a lower groove, and the lower tire side mold (202) is provided with the other of a lower slider and a lower groove, wherein the lower slider and the lower groove are in sliding engagement.

11. A tire manufacturing method, characterized in that, Tires are produced using the tire production apparatus according to any one of claims 1 to 10.

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