Tire vulcanizing device capable of quickly replacing capsule

Abstract

The invention discloses a tire vulcanizing device capable of quickly replacing a capsule, and belongs to the technical field of tire molds, the tire vulcanizing device comprises a lower clamping assembly and a ring seat, the lower clamping assembly comprises a lower clamping ring and a lower steel ring, and the lower steel ring is fixedly connected with the ring seat; a tensioning ring is arranged on the lower side face of the lower clamping ring and comprises an axial extending part and a radial extending part, the axial extending part is fixedly connected with the lower side face of the lower clamping ring, the radial extending part is fixedly arranged at the lower end of the axial extending part, a guide hole is formed in the ring base, a pull rod is arranged in the guide hole, and a limiting part is arranged at the upper end of the pull rod. The limiting part is positioned between the radial extension part and the lower side surface of the lower clamping ring; the pull rod penetrates through the guide sleeve, the guide portion of the pull rod is matched with the guide groove of the guide sleeve, when the capsule is disassembled, the drive assembly drives the pull rod to ascend in the axial direction and then ascend while rotating, after the lower clamping ring ascends to release the capsule, the limiting portion rotates to the unlocking position, the capsule assembling process is opposite to disassembling operation, and rapid disassembling and assembling of the capsule and the lower clamping ring are achieved. The replacement efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of tire mold technology, and more specifically to a tire vulcanizing device with a quick-change bladder. Background Technology

[0002] Currently, the tire vulcanization production process requires frequent replacement of bladders and disassembly and assembly of bladder clamps. The bladder needs to be replaced approximately every 200 tires vulcanized. The efficiency of bladder and bladder clamp disassembly and replacement directly affects the tire vulcanization production efficiency.

[0003] Typically, the upper edge of the bladder is clamped and fixed using an upper clamping ring and an upper steel ring, while the lower edge is clamped and fixed using a lower clamping ring and a lower steel ring. In existing vulcanizing equipment, for ease of bladder replacement, both the upper clamping ring and upper steel ring, as well as the lower clamping ring and lower steel ring, are connected using screws. The upper clamping assembly, consisting of the upper clamping ring and upper steel ring, is detachably mounted on the central mechanism and rises and falls under the drive of the central mechanism to achieve tire vulcanization production. The lower clamping assembly, consisting of the lower clamping ring and lower steel ring, is mounted on a ring seat.

[0004] Replacing the bladder requires manual disassembly and assembly, such as the disassembly and assembly of the lower clamping assembly and ring seat, the lower clamping ring and lower steel rim, and the upper clamping ring and upper steel rim. This process is time-consuming and prone to problems such as threaded connections becoming locked or the bladder adhering to the clamps, leading to disassembly difficulties and low efficiency. Furthermore, manual operation must be performed in a low-temperature environment. The mold temperature is high immediately after tire vulcanization, making it unsuitable for direct bladder disassembly and assembly. The operation must be carried out after the mold temperature has cooled down. Re-preheating the mold is required for subsequent vulcanization operations, resulting in wasted heat energy, affecting overall vulcanization efficiency, and hindering energy conservation and emission reduction.

[0005] In view of the above-mentioned problems, it is necessary to design a tire vulcanizing device that can quickly disassemble and replace the bladder to meet the production needs of speeding up and increasing efficiency. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a tire vulcanizing device with a quick-change bladder, which enables rapid disassembly and assembly of the bladder, improving replacement efficiency; the disassembly and assembly operations can be performed while the mold still has a certain temperature, saving energy and being environmentally friendly.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a tire vulcanizing device with a quick-change bladder, including a lower clamping assembly and a ring seat. The lower clamping assembly is disposed on the ring seat. The lower clamping assembly includes a lower clamping ring and a lower steel ring. The lower steel ring is fixedly connected to the ring seat, and the lower clamping ring is located on the upper side of the lower steel ring and can be raised and lowered relative to the lower steel ring. The lower side of the lower clamping ring is provided with a tensioning ring, which includes an axial extension and a radial extension. The axial extension is fixedly connected to the lower side of the lower clamping ring and extends downward in the axial direction. The radial extension is fixedly disposed at the lower end of the axial extension and extends radially to the inside or outside of the axial extension. The ring seat is provided with a guide hole, and a pull rod is provided in the guide hole. The pull rod can move up and down and rotate relative to the guide hole. The upper end of the pull rod is provided with a limiting part, which is located between the radial extension and the lower side of the lower clamping ring. The limiting part can be rotated to a locking position that overlaps with the radial extension or an unlocking position that is offset from the radial extension. The ring seat is equipped with a drive assembly. When disassembling the capsule, the drive assembly drives the pull rod to rise axially first and then rotate while rising. After the lower clamping ring rises and releases the capsule, the limiting part rotates to the unlocked position. When assembling the capsule, the drive assembly drives the pull rod to descend axially first and then rotate while descending. After the limiting part rotates to the locked position, the lower clamping ring clamps the capsule.

[0008] In the above-mentioned tire vulcanizing device with quick-change bladder, the drive assembly includes a rotating seat, a drive element, and a rotation control element; the lower end of the pull rod is connected to the drive element through the rotating seat, the drive element drives the rotating seat to rise and fall, the pull rod rises and falls synchronously with the rotating seat and can rotate relative to it; the rotation control element can control the rotation of the pull rod.

[0009] In the above-mentioned tire vulcanizing device with quick-change bladder, the rotation control element is a guide sleeve, which is fixed on the ring seat and coaxial with the guide hole; the inner wall of the guide sleeve is provided with a first guide groove, which includes a first groove portion and a second groove portion, the first groove portion extends axially, the second groove portion rises spirally, and the lower end is connected to the upper end of the first groove portion. The pull rod is slidably disposed within the guide sleeve and has a guide portion that extends into the first guide groove, the guide portion being slidably engaged with the first guide groove.

[0010] In the above-mentioned tire vulcanizing device with quick-change bladder, the driving element is a mechanically self-locking hydraulic cylinder. And / or, the first guide groove penetrates the inner wall of the guide sleeve.

[0011] In the above-mentioned tire vulcanizing device with quick-change bladder, the rotation control element is a swing cylinder, which is fixedly installed on the rotating seat and can drive the pull rod to rotate.

[0012] The tire vulcanizing device described above, which allows for quick bladder replacement, also includes a synchronous drive plate, which is simultaneously fixedly connected to multiple rotating seats.

[0013] In the aforementioned tire vulcanizing device with a quick-change bladder, the drive assembly includes a rotary hydraulic cylinder. The piston rod of the rotary hydraulic cylinder is connected to the pull rod, and rotates and rises synchronously. The piston rod is provided with a second guide groove, which includes a third groove and a fourth groove. The third groove spirals upward, and its upper end communicates with the fourth groove, which extends axially. A guide column is fixedly provided on the cylinder body of the rotary hydraulic cylinder. The guide column extends into the second guide groove, and the two slide in cooperation.

[0014] In the above-mentioned tire vulcanizing device with quick-change bladder, the lower side of the lower clamping ring is provided with a relief groove, the position of the relief groove corresponds to the position of the radial extension; the limiting part is located in the area enclosed by the relief groove and the radial extension. And / or, it also includes an upper clamping assembly, the upper clamping assembly including an upper clamping ring and an upper steel ring, the upper clamping ring and the upper steel ring being detachably connected, and the upper clamping ring being provided with a lifting lug; And / or, the lower steel ring is fitted onto the outside of the ring seat, the inner side of the lower steel ring is provided with a first locking tooth, and the outer side wall of the ring seat is provided with a second locking tooth, the first locking tooth and the second locking tooth cooperate to limit the axial movement of the lower steel ring; And / or, the lower steel ring and the ring seat are circumferentially positioned using locating pins; And / or, the radial extension extends radially inward toward the axial extension.

[0015] In the above-mentioned tire vulcanizing device with quick-change bladder, the lower side of the lower clamping ring is provided with a positioning groove, and the upper side of the lower steel ring is provided with an upwardly protruding bladder positioning platform. The bladder positioning platform extends into the positioning groove, and the two cooperate to radially position the lower steel ring and the lower clamping ring.

[0016] In the above-mentioned tire vulcanizing device with quick-change bladder, the lower side of the lower clamping ring is provided with a first bladder slot, which is located radially outside the positioning groove; the upper side of the lower steel ring is provided with a second bladder slot, which is located radially outside the bladder positioning platform; the second bladder slot and the first bladder slot are directly opposite each other and cooperate to clamp the lower edge of the bladder; And / or, the tensioning ring may extend throughout the circumference, or the tensioning ring may be distributed in a dotted pattern along the circumference of the ring seat.

[0017] The beneficial effects of this invention are as follows: The tire vulcanizing device with quick-change bladders controls the lower clamping ring via a control rod, and the assembly and disassembly of the rod and lower clamping ring are simple. The lower clamping ring has a tensioning ring on its lower side, which cooperates with the limiting part of the rod. During vulcanization, the lower clamping ring is held in place by the limiting part, and the rod applies a downward force to the lower clamping ring, causing the lower clamping ring and the lower steel rim to clamp the bladder. When changing the bladder, the rod moves up and down, with rotation accompanying the final stage of the ascent and the initial stage of the descent. This rotation and movement not only allows the lower clamping ring to move away from or closer to the lower steel rim but also completes the relative rotation between the limiting part and the lower clamping ring, i.e., the rod is either disconnected or connected to the lower clamping ring. Therefore, the assembly and disassembly of both the bladder and the lower clamping ring can be achieved by controlling the movement of the rod, eliminating the need for manual operation, shortening the replacement time of the bladder and lower clamping ring, increasing replacement efficiency, and improving the overall efficiency of tire vulcanization production. The connection between the pull rod, guide sleeve, and lower clamping ring ensures that the pull rod remains connected to the lower clamping ring when the capsule is disassembled, thus preventing the capsule from sticking to the lower clamping ring and being dragged away from the pull rod by the capsule; the lower steel ring is limited in both the circumferential and axial directions and is easy to disassemble and assemble, and the positional accuracy of the lower steel ring is not affected when the capsule is disassembled and assembled. The clamping of the capsule can be released by controlling the lever, so the capsule can be removed from the ring seat while the mold is still at a high temperature. Compared with the existing technology of manually removing the capsule at low temperature, heat loss is reduced, and the preheating time required for the mold to be used again is also reduced, saving energy and bringing higher efficiency to the tire factory.

[0018] The clamping of the lower clamping ring and the lower steel ring, as well as the connection between the lower steel ring and the ring seat, avoids the use of bolts and screws, which facilitates disassembly and assembly and avoids problems such as threaded connection failure and locking caused by temperature changes.

[0019] The lower clamping ring and the lower steel ring are positioned radially by using a positioning groove and a capsule positioning platform. At the same time, the capsule positioning platform can abut against the lower clamping edge of the capsule to position the capsule. The operation is simple and the positioning accuracy is high. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the tire vulcanizing device with a quickly replaceable capsule in this invention. Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 This is a bottom view of the lower steel ring; Figure 4 This is a bottom view of the ring seat; Figure 5 This is a schematic diagram of the guide sleeve structure; Figure 6 This is a schematic diagram of the tie rod structure; Figure 7A schematic diagram of a tie rod driven to rotate by a swing cylinder; Figure 8 A schematic diagram of a tie rod that uses a rotary hydraulic cylinder to drive its rotation and lifting. Figure 9 This is a partial structural diagram of the piston rod of a rotary hydraulic cylinder.

[0021] In the picture: 1-Ring seat; 2-Lower clamping ring; 3-Positioning pin; 4-Lower steel ring; 5-Synchronous drive plate; 6-Guide part; 7-Upper steel ring; 8-Guide sleeve; 9-Pull rod; 10-Rotating seat; 11-Upper clamping ring; 12-Drive element; 13-Second capsule slot; 14-Capsule positioning platform; 15-First capsule slot; 16-Positioning groove; 17-Axial extension part; 18-Radial extension part; 19-Limiting part; 20-First through groove; 21-Second locking tooth; 22-Guide hole; 23-Second through groove; 24-Allowing groove; 25-First groove; 26-Second groove; 27-First locking tooth; 28-Rotating hydraulic cylinder; 29-Piston rod; 30-Third groove; 31-Swing cylinder; 32-Fourth groove. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Please refer to Figures 1-9 A tire vulcanizing device with a quick-change bladder includes an upper clamping assembly, a lower clamping assembly, a ring seat 1, and a central mechanism. Among them, such as... Figure 1 As shown, the ring seat 1 has a through hole in the center, and the central mechanism is located in the through hole and can be raised and lowered. The upper clamping assembly is located on the central mechanism and operates under the control of the central mechanism. The lower clamping assembly is located on the ring seat 1. The ring seat 1 and the central mechanism are existing structures, and this application has not made any improvements. Therefore, they are not shown in detail in the attached drawings and will not be described in detail here. The upper clamping assembly includes an upper clamping ring 11 and an upper steel ring 7, which cooperate to clamp the upper edge of the capsule. The upper clamping ring 11 and the upper steel ring 7 are detachably connected by bolts to facilitate capsule replacement. At the same time, the upper clamping ring 11 is detachably connected to the central rod of the central mechanism by bolts. The lower clamping assembly includes a lower clamping ring 2 and a lower steel ring 4. The lower steel ring 4 is fixedly connected to the ring seat 1, and the lower clamping ring 2 is located above the lower steel ring 4 and can be raised and lowered relative to the lower steel ring 4 to clamp or release the lower edge of the capsule.

[0024] Furthermore, a lifting lug is provided on the upper clamping ring 11, which can be used with the assistance of lifting machinery to replace the capsule; that is, after the upper clamping ring 11 is separated from the center rod, and the lower clamping ring 2 and the lower steel ring 4 are loosened from the lower clamping edge of the capsule, the lifting machinery can use the lifting lug as the lifting point to lift the capsule, as well as the upper clamping ring 11 and the upper steel ring 7, away from the tire mold together to carry out the capsule replacement operation.

[0025] The lower steel ring 4 is fitted onto the outside of the ring seat 1, using a staggered tooth connection for easy assembly and disassembly, avoiding the locking problem common with existing threaded connections. Specifically, as follows... Figure 3 and Figure 4 As shown, the mating surfaces of the lower steel ring 4 and the ring seat 1, which cooperate with each other and extend axially, are respectively provided with first locking teeth 27 and second locking teeth 21. The first locking teeth 27 are located on the inner side of the lower steel ring 4, with multiple first locking teeth 27 spaced apart circumferentially on the lower steel ring 4, forming a first through groove 20 between two first locking teeth 27. The second locking teeth 21 are located on the outer side wall of the ring seat 1, with multiple second locking teeth 21 spaced apart upwards on the ring seat 1, forming a second through groove 23 between adjacent second locking teeth 21. When assembling the lower steel ring 4 and the ring seat 1, the first locking teeth 27 are first aligned with the second through groove 23, and the second locking teeth 21 are first aligned with the first through groove 20. Then, the lower steel ring 4 is first moved axially relative to the ring seat 1 and then rotated, so that the first locking teeth 27 and the second locking teeth 21 are aligned, achieving axial positioning of the lower steel ring 4 and preventing the lower steel ring 4 from being lifted by the bladder when disassembling the bladder. Circumferentially, as shown... Figure 2 As shown, the lower steel ring 4 and the ring seat 1 are circumferentially positioned by the positioning pin 3. The connection between the lower steel ring 4 and the ring seat 1 eliminates the existing threaded connection methods such as connecting screws and bolts, making the assembly and disassembly of the parts more convenient and faster, and reducing installation time.

[0026] Please refer to Figure 2 The lower clamping ring 2 has a first capsule slot 15 and a positioning groove 16 on its lower side surface. The first capsule slot 15 and the positioning groove 16 are recessed into the lower side surface of the lower clamping ring 2. The first capsule slot 15 is located radially outside the positioning groove 16. The upper side of the lower steel ring 4 has a capsule positioning platform 14, which corresponds to the positioning groove 16. The capsule positioning platform 14 extends into the positioning groove 16, and the two work together to quickly position the lower steel ring 4 and the lower clamping ring 2 radially. A second capsule slot 13 is located radially outside the capsule positioning platform 14. The second capsule slot 13 is directly opposite the first capsule slot 15 and works together to clamp the lower edge of the capsule.

[0027] Furthermore, the outer side of the capsule positioning platform 14 is the inner groove wall of the second capsule slot 13. In this way, after the lower edge of the capsule is installed in place, it abuts against the outer side of the capsule positioning platform 14, and the contact surface is large, which facilitates the installation and positioning of the capsule. In actual operation, it is only necessary to make the lower edge of the capsule in close contact with the outer side of the capsule positioning platform 14 to confirm that the installation is in place, reducing the capsule loading and unloading time.

[0028] Understandably, both the second capsule slot 13 and the first capsule slot 15 are annular grooves to match the lower clamping edge of the capsule; the positioning groove 16 and the capsule positioning platform 14 are preferably annular, which facilitates processing and also facilitates the lower steel ring 4 and the lower clamping ring 2 to clamp the capsule; however, in some embodiments, the positioning groove 16 and the capsule positioning platform 14 can be set as multiple and distributed at intervals in the circumferential direction, which can also achieve the positioning of the lower clamping edge of the capsule and the radial positioning of the lower steel ring 4 and the lower clamping ring 2.

[0029] The lower side of the lower clamping ring 2 is also provided with a tensioning ring, which is located radially inside the positioning groove 16. The tensioning ring can extend in the entire circumferential direction, that is, surround the outside of the ring seat 1 360°; or it can be configured as multiple rings distributed in a point-like manner in the circumferential direction of the ring seat 1. The tensioning ring includes an axial extension 17 and a radial extension 18. The axial extension 17 is fixedly connected to the lower side of the lower clamping ring 2 and extends downward in the axial direction; the radial extension 18 is fixedly disposed at the lower end of the axial extension 17 and extends radially inward or outward.

[0030] Preferably, the radially outer surface of the axial extension 17 coincides with the radially inner wall of the positioning groove 16, and the radial extension 18 extends radially inward toward the axial extension 17, i.e., away from the positioning groove 16. At this time, the outer surface of the axial extension 17 is coplanar with the inner wall of the positioning groove 16, which can increase the mating contact surface between the positioning groove 16 and the capsule positioning stage 14, making radial positioning reliable and highly accurate. At the same time, the radial structure of the lower clamping ring 2 is more compact, which can reduce the radial dimension of the lower clamping ring 2. In addition, the lower end of the outer surface of the axial extension 17 is provided with a slope, which enlarges the groove opening size of the positioning groove 16, which can guide the capsule positioning stage 14 into the positioning groove 16, facilitating installation.

[0031] The ring seat 1 is provided with a guide hole 22, and the guide hole 22 and the radial extension 18 are located on the same side of the axial extension 17. When the radial extension 18 is located radially outside the axial extension 17, the guide hole 22 is provided radially outside the radial extension 18; when the radial extension 18 is located radially inside the axial extension 17, such as... Figure 2 As shown, the guide hole 22 is located radially inside the radial extension 18. The guide hole 22 and the radial extension 18 are vertically offset. A pull rod 9 is provided inside the guide hole 22, and the pull rod 9 can move up and down and rotate relative to the ring seat 1. The pull rod 9 extends on the upper and lower sides of the ring seat 1, as shown. Figure 6As shown, the upper end of the pull rod 9 is provided with a limiting part 19, which is located above the radial extension 18. The limiting part 19 and the pull rod 9 can be T-shaped, L-shaped, etc., and can be integrated or separate. When the pull rod 9 is rotated, the limiting part 19 rotates between two extreme positions, which are the locked position and the unlocked position. When the limiting part 19 is in the locked position, the limiting part 19 is located between the radial extension 18 and the lower side of the lower clamping ring 2, and the limiting part 19 and the radial extension 18 overlap vertically. At this time, the pull rod 9 will contact the lower side of the lower clamping ring 2 when moving upward, and will fit against the upper side of the radial extension 18 when moving downward. When the limiting part 19 is in the unlocked position, the limiting part 19 and the radial extension 18 are offset vertically, and the lower clamping ring 2 can move upward and disengage from the pull rod 9.

[0032] Furthermore, the lower clamping ring 2 has a clearance groove 24 on its lower side, the position of which corresponds to the position of the radial extension 18; the distance between the radial extension 18 and the bottom wall of the clearance groove 24 is slightly greater than the height of the limiting part 19 (i.e., the distance between the upper and lower sides of the limiting part 19). When the limiting part 19 is in the locked position, the limiting part 19 is within the area enclosed by the clearance groove 24 and the radial extension 18, and the limiting part 19 is limited in both the axial and radial directions, making it difficult for the pull rod 9 to disengage from the lower clamping ring 2; when the limiting part 19 is in the unlocked position, the limiting part 19 is located radially inside the radial extension 18 and simultaneously outside the groove wall of the clearance groove 24 away from the axial extension 17, allowing the lower clamping ring 2 to move axially and disengage from the pull rod 9.

[0033] The ring seat 1 is equipped with a drive assembly for controlling the movement of the pull rod 9. In conjunction with the tensioning ring, when installing or removing the bladder, the pull rod 9 first rises axially to release the clamping ring 2 from the bladder, then rotates and rises simultaneously. This causes the limiting part 19 to rotate from the locked position to the unlocked position, disengaging from the radial extension part 18 and releasing the connection between the lower clamping ring 2 and the pull rod 9. Thus, the installation and removal of the bladder and the lower clamping ring 2 can both be achieved by controlling the movement of the pull rod 9, allowing the bladder to be removed from the ring seat 1 while the tire mold is still at a high temperature.

[0034] As a first embodiment of the driving component, such as Figure 1 , Figure 5 and Figure 6As shown, the device includes a rotating base 10, a driving element 12, and a rotation control element. The lower end of the pull rod 9 is connected to the driving element 12 via the rotating base 10; the pull rod 9 can rise and fall synchronously with the rotating base 10, or rotate relative to the rotating base 10. The driving element 12 is fixedly connected to the ring seat 1 via a bracket or other components, and its relative position remains fixed. The driving element 12 applies an upward thrust or a downward pull force to the rotating base 10, driving the rotating base 10 to rise and fall; the pull rod 9 rises and falls accordingly. The driving element 12 is preferably a mechanically self-locking hydraulic cylinder, which can achieve self-locking and ensure that the pull rod 9 driven by the cylinder piston rod has a sustained tension force, so that the lower clamping ring 2 and the lower steel ring 4 clamp the capsule; alternatively, a conventional hydraulic cylinder or pneumatic cylinder can be used to achieve clamping of the lower clamping ring 2 and the lower steel ring 4 by maintaining pressure.

[0035] A rotation control element is used to control the rotation of the pull rod 9 between the locked and unlocked positions. For example, the rotation control element is a guide sleeve 8, which is fixed on the lower side of the ring seat 1 and coaxial with the guide hole 22. The pull rod 9 passes through the guide sleeve 8, and the two are slidably engaged. The drive element 12 drives the pull rod 9 to move up and down, and the lower clamping ring 2 moves up and down with the pull rod 9. The guide sleeve 8 guides the movement path of the pull rod 9, which not only realizes the automatic disassembly and installation of the lower clamping ring 2, but also realizes the automatic locking and disassembly function of the lower clamping ring 2 and the lower steel ring 4 against the lower edge of the capsule, reducing manual operation.

[0036] Specifically, the guide sleeve 8 is provided with a first guide groove, which is at least located on the inner wall of the guide sleeve 8. Preferably, the first guide groove penetrates the side wall of the guide sleeve 8 for easy processing. The first guide groove includes a first groove portion 25 and a second groove portion 26. The first groove portion 25 is located below the second groove portion 26 and extends axially. The second groove portion 26 is spirally arranged and communicates with the upper end of the first groove portion 25. The second groove portion 26 has both axial and circumferential extension. The pull rod 9 has a guide portion 6 that extends into the first guide groove, and the guide portion 6 is slidably engaged with the first guide groove.

[0037] When the drive element 12 pushes the pull rod 9 upward, the guide part 6 engages with the first guide groove, guiding the pull rod 9 to first move upward along the first groove 25 axially, and then rotate upward along the second groove 26. The axial movement of the pull rod 9 pushes the lower clamping ring 2 upward, releasing the clamping of the lower edge of the capsule. When the lower edge of the capsule disengages from the lower clamping ring 2 and the lower steel ring 4, the limiting part 19 of the pull rod 9 still overlaps with the radial extension part 18, maintaining the limiting of the lower clamping ring 2, thus preventing the lower clamping ring 2 from being dragged away by the capsule. During the upward rotation of the pull rod 9 along the second groove 26, the pull rod 9 not only has an upward movement but also a certain rotation in the circumferential direction, for example, 90°, causing the limiting part 19 of the pull rod 9 to be misaligned with the radial extension part 18, no longer overlapping vertically. At this time, the lower clamping ring 2 can be removed upward or placed downward at the upper end of the pull rod 9.

[0038] When the drive element 12 pulls the pull rod 9 downwards axially, the process is reversed. Before the lower clamping ring 2 contacts the lower clamping edge of the capsule, the pull rod 9 rotates and descends along the second groove 26. The limiting part 19 and the lower clamping ring 2 descend together, and the limiting part 19 rotates to have an overlapping area with the radial extension part 18, thus connecting the pull rod 9 and the lower clamping ring 2. At the same time, the lower clamping ring 2 gradually approaches the lower steel ring 4. The pull rod 9 continues to move downwards along the first groove 25, and the lower clamping ring 2 approaches the lower steel ring 4, gradually clamping the lower clamping edge of the capsule. During the above-mentioned operation of the pull rod 9, the lifting and lowering of the pull rod 9 is accompanied by rotation in some stages, reducing the disassembly and assembly time of the lower clamping ring 2.

[0039] As a second embodiment of the driving component, such as Figure 7 As shown, unlike the first embodiment, the rotation control element is a swing cylinder 31. The swing cylinder 31 is fixedly mounted on the rotating seat 10, and the piston rod drives the pull rod 9 to rotate via a transmission assembly such as gears. The pull rod 9 is controlled by the combination of the drive element 12 and the swing cylinder 31. The transmission between the swing cylinder 31, the piston rod, and the pull rod 9 is prior art and will not be described in detail here.

[0040] In the first and second embodiments of the aforementioned drive component, the number of pull rods 9 can be set as needed, preferably multiple pull rods 9, and the multiple pull rods 9 are evenly distributed in the circumferential direction; for example, the number of pull rods 9 is 4.

[0041] Furthermore, the lower ends of the four pull rods 9 are all connected to the synchronous drive plate 5 via the rotating seat 10. The synchronous drive plate 5 is ring-shaped. The introduction of the synchronous drive plate 5 connects the pull rods 9 in parallel, preventing jamming due to asynchronous movements. Alternatively, a single drive element 12 can be used to push and pull the synchronous drive plate 5, thereby synchronously driving the four pull rods 9. Of course, depending on the power requirements, the synchronous drive plate 5 can also be driven by multiple drive elements 12 simultaneously. For example, four drive elements 12 can be set accordingly, that is, one drive element 12 corresponds to one pull rod 9.

[0042] As a third embodiment of the driving component, such as Figure 8 , Figure 9As shown, the system includes a rotary hydraulic cylinder 28, whose piston rod 29 is connected to a pull rod 9, allowing for synchronous rotation and lifting. The piston rod 29 and pull rod 9 can be an integral structure or fixedly connected via a coupling or similar means. A second guide groove is provided on the outer wall of the piston rod 29, comprising a third groove 30 and a fourth groove 32. The third groove 30 is located below the fourth groove 32; the third groove 30 spirals upwards, its upper end communicating with the fourth groove 32, which extends axially. A guide column is fixedly mounted on the cylinder body of the rotary hydraulic cylinder 28, extending into the second guide groove, with the two slidingly engaged. Since the guide column remains stationary, when the piston rod 29 moves, the guide column first slides against the fourth groove 32, causing the piston rod 29 to move axially; when the guide column enters the third groove 30 from the fourth groove 32, the piston rod 29 rotates and rises.

[0043] By using the aforementioned upper and lower clamping components, the bladder disassembly of the tire vulcanizing device can be mechanized, using the drive element 12 to drive the pull rod 9, thus eliminating the need to wait for the mold to cool down before disassembling the bladder.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tire vulcanizing device with a quick-change bladder, comprising a lower clamping assembly and a ring seat (1), the lower clamping assembly being disposed on the ring seat (1); characterized in that, The lower clamping assembly includes a lower clamping ring (2) and a lower steel ring (4); the lower steel ring (4) is fixedly connected to the ring seat (1), and the lower clamping ring (2) is located on the upper side of the lower steel ring (4) and can be raised and lowered relative to the lower steel ring (4); The lower clamping ring (2) has a tensioning ring on its lower side. The tensioning ring includes an axial extension (17) and a radial extension (18). The axial extension (17) is fixedly connected to the lower side of the lower clamping ring (2) and extends downward along the axial direction. The radial extension (18) is fixedly disposed at the lower end of the axial extension (17) and extends radially toward the inner or outer side of the axial extension (17). The ring seat (1) is provided with a guide hole (22), and a pull rod (9) is provided in the guide hole (22). The pull rod (9) can move up and down and rotate relative to the guide hole (22). The upper end of the pull rod (9) is provided with a limiting part (19). The limiting part (19) is located between the radial extension part (18) and the lower side of the lower clamping ring (2). The limiting part (19) can be rotated to a locking position that overlaps with the radial extension part (18) or an unlocking position that is offset from the radial extension part (18). The ring seat (1) is provided with a driving component. When disassembling the capsule, the driving component drives the pull rod (9) to rise along the axial direction first and then rotate while rising. After the lower clamping ring (2) rises and releases the capsule, the limiting part (19) rotates to the unlocking position. When assembling the capsule, the driving component drives the pull rod (9) to descend while rotating first and then descend along the axial direction. After the limiting part (19) rotates to the locking position, the lower clamping ring (2) clamps the capsule.

2. The tire vulcanizing device with a quick-change bladder according to claim 1, characterized in that, The drive assembly includes a rotating seat (10), a drive element (12), and a rotation control element; the lower end of the pull rod (9) is connected to the drive element (12) through the rotating seat (10), the drive element (12) drives the rotating seat (10) to rise and fall, the pull rod (9) rises and falls synchronously with the rotating seat (10) and can rotate relative to it; the rotation control element can control the rotation of the pull rod (9).

3. The tire vulcanizing device with a quick-change bladder according to claim 2, characterized in that, The rotation control element is a guide sleeve (8), which is fixed on the ring seat (1) and coaxial with the guide hole (22); the inner wall of the guide sleeve (8) is provided with a first guide groove, which includes a first groove (25) and a second groove (26). The first groove (25) extends axially, and the second groove (26) spirals upward, with its lower end connected to the upper end of the first groove (25). The pull rod (9) is slidably disposed in the guide sleeve (8) and has a guide portion (6) that extends into the first guide groove, the guide portion (6) being slidably engaged with the first guide groove.

4. The tire vulcanizing device with a quick-change bladder according to claim 3, characterized in that, The driving element (12) is a mechanically self-locking hydraulic cylinder; And / or, the first guide groove penetrates the inner wall of the guide sleeve (8).

5. A tire vulcanizing device with a quickly replaceable bladder according to claim 2, characterized in that, The rotation control element is a swing cylinder (31), which is fixedly installed on the rotating seat (10) and can drive the pull rod (9) to rotate.

6. A tire vulcanizing device with a quickly replaceable bladder according to claim 2, characterized in that, It also includes a synchronous drive plate (5), which is simultaneously fixedly connected to multiple rotating seats (10).

7. A tire vulcanizing device with a quickly replaceable bladder according to claim 1, characterized in that, The drive assembly includes a rotary hydraulic cylinder (28), the piston rod (29) of the rotary hydraulic cylinder (28) is connected to the pull rod (9) and rotates and rises synchronously; the piston rod (29) is provided with a second guide groove, the second guide groove includes a third groove (30) and a fourth groove (32), the third groove (30) spirals upward and its upper end communicates with the fourth groove (32), the fourth groove (32) extends axially; a guide column is fixedly provided on the cylinder body of the rotary hydraulic cylinder (28), the guide column extends into the second guide groove and the two slide together.

8. A tire vulcanizing device with a quickly replaceable bladder according to claim 1, characterized in that, The lower clamping ring (2) has a relief groove (24) on its lower side surface, and the position of the relief groove (24) corresponds to the position of the radial extension (18); the limiting part (19) is located in the area enclosed by the relief groove (24) and the radial extension (18). And / or, it also includes an upper clamping assembly, the upper clamping assembly including an upper clamping ring (11) and an upper steel ring (7), the upper clamping ring (11) and the upper steel ring (7) being detachably connected, the upper clamping ring (11) being provided with a lifting lug; And / or, the lower steel ring (4) is fitted on the outside of the ring seat (1), the inner side of the lower steel ring (4) is provided with a first locking tooth (27), and the outer side wall of the ring seat (1) is provided with a second locking tooth (21). The first locking tooth (27) and the second locking tooth (21) cooperate to limit the axial movement of the lower steel ring (4); And / or, the lower steel ring (4) and the ring seat (1) are circumferentially positioned using a positioning pin (3); And / or, the radial extension (18) extends radially inward toward the axial extension (17).

9. A tire vulcanizing device with a quickly replaceable bladder according to claim 1, characterized in that, The lower clamping ring (2) has a positioning groove (16) on its lower side, and the upper side of the lower steel ring (4) has a capsule positioning platform (14) that protrudes upward. The capsule positioning platform (14) extends into the positioning groove (16), and the two cooperate to radially position the lower steel ring (4) and the lower clamping ring (2).

10. A tire vulcanizing device with a quickly replaceable bladder according to claim 9, characterized in that, The lower clamping ring (2) has a first capsule slot (15) on its lower side, which is located radially outside the positioning groove (16); the lower steel ring (4) has a second capsule slot (13) on its upper side, which is located radially outside the capsule positioning platform (14); the second capsule slot (13) and the first capsule slot (15) are directly opposite each other and cooperate to clamp the lower edge of the capsule; And / or, the tensioning ring may extend throughout the circumference, or the tensioning ring may be distributed in a dotted manner in the circumference of the ring seat (1).

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