Stable full-steel engineering tire vulcanizing machine

Abstract

The application belongs to the technical field of tire vulcanization equipment, and relates to a stable full-steel engineering tire vulcanization machine, which comprises two vertical supports, and horizontal supports are fixedly installed on the opposite sides of the two vertical supports close to the top and the bottom. In the application, the radial embrace of the loose die is driven by the inclined surface of the extrusion block, and the rubber pad is used to realize the lateral preliminary close adhesion and sealing. The first T-shaped rod is inserted by the servo motor drive, and additional transverse secondary locking force is applied to the loose die, so that the adhesion gap is avoided in long-term use. The upper die driven by the upper die oil cylinder is inserted into the recessed structure through the protruding structure, and the plurality of loose dies are buckled into a rigid whole, so that the entire mold cavity still maintains the structural integrity and the sealing tightness under the extremely high internal vulcanization pressure, the problems of tire flash, burr and glue overflow caused by flash gap are avoided, and the appearance beauty, size precision and structural consistency of the large full-steel engineering tire are significantly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of tire vulcanization equipment, specifically a stable all-steel engineering tire vulcanizing machine. Background Technology

[0002] Engineering tire vulcanizing machines are key thermoforming equipment used in the manufacture of large all-steel radial tires for heavy engineering vehicles (such as mining dump trucks and loaders). Their core function is to provide a high-temperature, high-pressure vulcanization environment to cause a cross-linking reaction in the rubber within the tire blank, thereby achieving the required strength, elasticity, and tread pattern of the final product.

[0003] A search revealed Chinese patent CN102198715A, which discloses a tire vulcanizing machine. In this tire vulcanizing machine, the mold opening and closing is achieved using a lifting mechanism such as a ball screw shaft with high efficiency. The ball screw shaft is rotated by a drive mechanism, causing a ball nut to move up and down, thereby raising and lowering the upper mold mounting component that holds the upper mold. A non-magnetically operated electromagnetic brake, directly and independently connected to the ball screw shaft, fixes the ball screw shaft, stopping the raising and lowering of the upper mold mounting component. With this structure, even if a malfunction occurs in the drive mechanism or brake, the opening and closing of the mold can be stopped.

[0004] While the aforementioned technical solutions address the issue of safe stopping in case of malfunctions in the drive mechanism or brakes, their focus is primarily on motion safety and abnormal braking. They do not delve into the structural stability and dynamic sealing challenges of the mold during high-pressure vulcanization. Specifically, during vulcanization, especially when the vulcanization pressure is maintained in a high range, such as 2.0 MPa to 2.5 MPa, the enormous internal pressure causes the mold's parting surface to bear a huge separation force. Traditional one-piece molds or simple combined mold structures are prone to developing tiny gaps between the mold parting surfaces under long-term high-pressure cycling due to minor elastic deformation of structural components, uneven thermal expansion and contraction, or accumulated manufacturing errors. This is known in the industry as the "flash gap" phenomenon. Once a flash gap occurs, molten rubber will be squeezed out of the gap under high pressure, forming "flash" or "burrs." This not only seriously affects the aesthetics of the tire sidewall and tread pattern but also increases the cost of subsequent trimming processes. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention aims to provide a stable all-steel engineering tire vulcanizing machine. By using this device, the problems mentioned in the background are solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: a stable all-steel engineering tire vulcanizing machine, comprising two uprights, with crossbeams fixedly installed on opposite sides of the two uprights near the top and bottom; an upper plate is commonly provided on opposite sides of the two uprights near the top, with upper cylinders fixedly installed on the front and rear sides of the top crossbeam, and the bottom ends of the upper cylinders are fixedly connected to the upper plate; a movable seat is provided below the upper plate, a lower mold is provided on the top of the movable seat, a central component is provided above the movable seat, an upper mold is provided at the bottom of the upper plate, a protective shell is fixedly installed on the top of the upper plate, an upper mold cylinder is fixedly installed on the top of the protective shell, a connecting rod is fixedly installed at the bottom of the upper mold cylinder, and the bottom end of the connecting rod is installed on the top of the upper mold; a protruding structure is installed at the bottom of the upper mold, and several movable molds are provided at the bottom of the upper mold, each movable mold having an adjustment structure, and a first recessed structure is provided on the top of each movable mold.

[0007] Preferably, a number of second T-shaped rods are fixedly installed on the top of the movable seat, and the bottom of the movable mold is provided with irregular grooves, and the second T-shaped rods are movably inserted into the inner cavity of the irregular grooves.

[0008] Preferably, a protective pad is fixedly installed on the top of the movable seat, and the top of the second T-shaped rods all penetrates through the top of the protective pad.

[0009] A stable all-steel engineering tire vulcanizing machine further includes a second recessed structure opened at the bottom of the movable mold, wherein a first T-shaped rod is movably inserted into the inner cavity of the second recessed structure, and a drive assembly is provided at the bottom of the movable seat.

[0010] Preferably, the drive assembly includes a second bracket installed at the bottom of the movable seat. A second servo motor is fixedly installed at the bottom of the inner cavity of the second bracket. An eccentric wheel is fixedly installed at the end of the power output shaft of the second servo motor. A movable disc is attached to the top of the eccentric wheel. The top of the first T-shaped rod moves through the top of the lower mold and the movable seat. The first T-shaped rod is fixedly installed through the top of the movable disc. The outer periphery of the first T-shaped rod has a movable outer periphery return spring, and the two ends of the return spring are fixedly connected to the movable disc and the movable seat, respectively.

[0011] Preferably, the top of the first T-shaped rod is cut with a first inclined surface in the direction facing the lower mold, and the part of the second recessed structure that fits with the first inclined surface is the second inclined surface.

[0012] Preferably, a rubber pad is fixedly fitted on the contact surface between the lower mold and the movable mold.

[0013] Preferably, the central component includes a conduit penetrating the bottom of the lower mold cavity, and a bottom plate is fixedly sleeved on the outer periphery of the conduit near the top end. A top plate is provided on the top of the bottom plate, and an expansion body is fixedly installed between the top plate and the bottom plate. A cavity is opened in the inner cavity of the conduit near the top end, and a connecting post is slidably connected to the inner cavity of the cavity. The top end of the connecting post is fixedly connected to the top plate, and a connecting spring is movably sleeved on the outer periphery of the connecting post. The two ends of the connecting spring are fixedly connected to the top plate and the conduit, respectively.

[0014] A stable all-steel engineering tire vulcanizing machine also includes a moving component located in the inner cavity of the upright, the moving component being used to drive the moving seat to move longitudinally.

[0015] Preferably, a stabilizing frame is fixedly installed on the top of the bottom crossbeam near both sides. An H-shaped steel bar is fixedly installed on the top of each stabilizing frame, and a guide rail is fixedly installed on the top of each H-shaped steel bar. A slider is fixedly installed on the bottom of the movable seat near both sides. The slider is slidably connected to the outer periphery of the adjacent guide rail. A rack plate is fixedly installed on the opposite side of each H-shaped steel bar. A connecting frame is fixedly installed on the opposite side of the movable seat near the front. A first servo motor is fixedly installed on the top of each connecting frame. The power output shaft of the first servo motor moves through the bottom of the adjacent connecting frame and is fixedly installed with a gear. The opposite side of the gear meshes with the adjacent rack plate. A first bracket is fixedly installed on the bottom of the movable seat near the front. A downward hydraulic cylinder is installed on the top of the first bracket, and the bottom end of the downward hydraulic cylinder moves through the top of the first bracket and is fixedly installed with a positioning block.

[0016] The beneficial effects of this invention are as follows: 1. This invention uses the inclined surface of the extrusion block to drive the movable mold to radially engage, and with the help of a rubber pad, achieves a preliminary tight fit and seal in the lateral direction. A servo motor drives the insertion of the first T-shaped rod to apply an additional lateral secondary locking force to the movable mold, ensuring a gapless fit during long-term use. The upper mold, driven by the upper mold cylinder, inserts into the recessed structure through a protruding structure, fastening multiple movable molds into a rigid whole. This ensures that the entire mold cavity maintains structural integrity and tight sealing even under extremely high internal vulcanization pressure, eliminating problems such as tire flash, burrs, and glue overflow caused by gaps. It significantly improves the appearance, dimensional accuracy, and structural consistency of large all-steel engineering tires.

[0017] 2. In this invention, the movable mold is constrained by the cooperation of the second T-shaped rod and the irregular groove to prevent it from moving up and down. In the radial direction, the movable mold is first driven to hug by the extrusion block, and then the first T-shaped rod is inserted for secondary lateral locking, which effectively resists the huge and multi-directional internal pressure and thermal stress during the vulcanization process, so that the entire mold system is stable under high pressure cyclic load without any loosening or displacement.

[0018] 3. This invention achieves automatic and precise feeding and positioning of the lower mold and the moving seat through the moving component and the positioning component. It realizes the automatic switching between the loading of the tire blank, the unloading of the finished product and the main vulcanization station during the vulcanization cycle, reduces manual intervention and crane hoisting time, significantly shortens the non-vulcanization auxiliary time and improves the overall production efficiency. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from another perspective; Figure 3 This is an exploded view of a partial three-dimensional structure of the H-shaped steel bar, the first servo motor, and the connecting frame of the present invention; Figure 4 This is a partial three-dimensional structural diagram of the movable disc, the first T-shaped rod, and the conduit of the present invention; Figure 5 This is a partial bottom-view three-dimensional structural diagram of the movable seat, H-shaped steel bar, and guide tube of the present invention; Figure 6 This is a partial three-dimensional structural diagram of the upward hydraulic cylinder, the upward plate, and the stabilizer frame of the present invention; Figure 7 This is a three-dimensional structural diagram of the movable seat, protective pad, and first support of the present invention; Figure 8 This is a three-dimensional structural diagram of the movable mold and the upper mold of the present invention; Figure 9 This is a bottom-view three-dimensional structural diagram of the upper mold and upper mold cylinder of the present invention; Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram (from a bottom view) of the movable seat and the flexible mold of the present invention. Figure 11 This is a partial cross-sectional perspective view of the movable mold, H-shaped steel bar, and movable seat of the present invention. Figure 12 This is the invention Figure 4 Enlarged view of point A in the middle; Figure 13 This is the invention Figure 4 Enlarged view at point B in the middle; Figure 14 This is the invention Figure 7 Enlarged view at point C; Figure 15 This is the invention Figure 10 Enlarged view at point D; Figure 16 This is the invention Figure 11 Enlarged view at point E in the middle; Figure 17 This is the invention Figure 6 Enlarged view of point F in the middle.

[0021] In the diagram: 1. Vertical frame; 2. Horizontal frame; 3. Upper platen; 4. Upper cylinder; 5. Moving seat; 6. First support; 7. Lower cylinder; 8. Stabilizer; 9. H-shaped steel bar; 10. Guide rail; 11. Slider; 12. Connecting frame; 13. First servo motor; 14. Gear; 15. Rack plate; 16. Lower mold; 17. Upper mold; 18. Upper mold cylinder; 19. Rubber pad; 20. Connecting rod; 21. Second support; 22. Second servo motor 23. Motor; 24. Eccentric wheel; 25. Movable disc; 26. First T-shaped rod; 27. Return spring; 28. Protective pad; 29. ​​Second T-shaped rod; 30. Irregular groove; 31. Guide tube; 32. Base plate; 33. Connecting spring; 34. Connecting column; 35. Top plate; 36. Expansion body; 37. Movable mold; 38. Extrusion block; 39. Movable mold cylinder; 40. First dovetail block; 41. Second dovetail block; 42. Guide rod; 43. Fixing ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example 1 like Figures 1 to 17As shown, a stable all-steel engineering tire vulcanizing machine includes two uprights 1. A crossbeam 2 is fixedly installed on one side of each upright 1 near the top and bottom. An upper plate 3 is commonly provided on one side of each upright 1 near the top. Upper cylinders 4 are fixedly installed on both the front and rear sides of the top crossbeam 2. The upper cylinders 4 are used to move the upper plate 3, and the bottom ends of the upper cylinders 4 are fixedly connected to the upper plate 3. A movable seat 5 is provided below the upper plate 3, and a lower mold is provided on the top of the movable seat 5. The upper part of the upper plate 3 is equipped with a central component above the movable seat 5. The lower part of the upper plate 3 is equipped with an upper mold 17. A protective shell is fixedly installed on the top of the upper plate 3. An upper mold cylinder 18 is fixedly installed on the top of the protective shell. A connecting rod 20 is fixedly installed at the bottom of the upper mold 18, and the bottom of the connecting rod 20 is installed on the top of the upper mold 17. A protruding structure, which can be cylindrical or cubic, is installed at the bottom of the upper mold 17. Several movable molds 36 are provided at the bottom of the upper mold 17. Each movable mold 36 has... Each component is equipped with an adjustment structure, which includes a movable mold cylinder 38 mounted on the upper plate 3. The bottom end of the movable mold cylinder 38 extends through the top of the upper plate 3 and is fixedly mounted with an extrusion block 37. Two first dovetail grooves are formed on the rear side of the extrusion block 37. Two first dovetail blocks 39 are fixedly mounted on the front side of the movable mold 36. The upper ends of the first dovetail blocks 39 are inclined towards the axis of the movable mold 36. The first dovetail blocks 39 are slidably connected to adjacent first dovetail grooves. In the inner cavity, the top of the movable mold 36 has two second dovetail grooves. The bottom of the inner cavity of the second dovetail groove is fixedly installed with a second dovetail block 40, and the second dovetail block 40 is movably inserted through a guide rod 41. The outer end of the guide rod 41 is fixedly installed on a fixing ring 42, and the top of the fixing ring 42 is fixedly connected to the upper plate 3. The top of the movable mold 36 is provided with a first recessed structure. The first recessed structure can be a round groove or a square groove. The protruding structure is movably inserted into the inner cavity of the adjacent first recessed structure.

[0024] Specifically, the tire blank is placed on top of the lower mold 16, and then the upper cylinder 4 is activated. The upper cylinder 4 pushes the upper plate 3 downward until the movable mold 36 contacts the lower mold 16. After contact, the movable mold cylinder is activated to move the extrusion block downward. Since the extrusion block and the movable mold 36 are both inclined on the opposite side, and under the limiting action of the second dovetail block and the guide rod, the movable mold 36 moves towards the tire blank and fits tightly with the lower mold 16. Then the upper mold cylinder 18 is activated. Under the connecting action of the connecting rod 20, the upper mold 17 moves downward. The protrusion structure on the upper mold 17 can be precisely inserted into the inner cavity of the adjacent first recessed structure, and the four movable molds 36 are fastened together. Even if the vulcanization pressure is maintained between 2.0MPa and 2.5MPa, the problem of flash seams is avoided, which effectively improves the aesthetics of tire molding.

[0025] The extrusion block 37 is fixedly connected to the end of the piston rod of the movable die cylinder 38 via a connector at its top, allowing it to move up and down relative to the upper plate 3. The guidance of its up-and-down movement is ensured by the sliding engagement of a first dovetail groove on the rear side of the extrusion block 37 with a first dovetail block 39 fixed to the front side of the movable die 36. This structure ensures the precise movement trajectory of the extrusion block 37 and converts the vertical downward pressure into a force that drives the movable die 36 to move radially.

[0026] As the extrusion block 37 descends, the inclined plane drives the movable die 36 to move radially (laterally) towards the center (lower die 16 direction). Besides the force transmission relationship of the inclined plane, the relative positions of the two in the vertical direction are constrained by the sliding connection between the first dovetail block 39 and the first dovetail groove, preventing separation. The horizontal (perpendicular to the inclined plane) limiting is achieved by the second dovetail groove (located at the top of the extrusion block and the movable die), the second dovetail block 40, and the guide rod 41, ensuring that the movable die 36 can only move along a preset radial track in the horizontal direction, without deflection or jamming.

[0027] One end of the guide rod 41 is slidably connected to the second dovetail block 40, which is fixedly connected to the movable mold 36, and the other end of the guide rod 41 is fixed to the upper plate 3 via a fixing ring 42. The "second dovetail block 40" at the top of the movable mold 36 is slidably sleeved on the guide rod 41. Therefore, the movable mold 36 and the upper plate 3 have an indirect and slidable connection. When the extrusion block 37 descends, the movable mold 36 slides radially toward the lower mold 16 under the drive of the inclined plane and the guidance of the guide rod 41, completing the clamping action.

[0028] Several second T-shaped rods 28 are fixedly installed on the top of the movable seat 5, and irregular grooves 29 are opened on the bottom of the movable mold 36, and the second T-shaped rods 28 are movably inserted into the inner cavity of the irregular grooves 29.

[0029] Specifically, when the movable mold 36 moves downward, the second T-shaped rod 28 is initially located inside the cavity of the irregular groove 29. When the extrusion block presses the movable mold 36 inward, the second T-shaped rod 28 engages in the cavity of the irregular groove 29, which can limit the movable mold 36 in the longitudinal direction, ensuring that the movable mold 36 maintains a stable posture during the vulcanization process and avoiding up-and-down movement caused by vulcanization pressure fluctuations.

[0030] A protective pad 27 is fixedly installed on the top of the movable seat 5, and the top of the second T-shaped rod 28 passes through the top of the protective pad 27.

[0031] Specifically, the protective pad 27 can be made of silicone rubber. The protective pad 27 is designed to protect the extrusion block when it moves downward, preventing the extrusion block from directly contacting the surface of the moving seat 5 and causing impact damage.

[0032] Example 2 like Figure 4 , Figure 5 and Figure 15 As shown, a stable all-steel engineering tire vulcanizing machine also includes a second recessed structure opened at the bottom of the movable mold 36. The inner cavity of the second recessed structure is movably inserted with a first T-shaped rod 25, and a drive assembly is provided at the bottom of the movable seat 5.

[0033] Specifically, the first T-shaped rod 25 is movably inserted through the top of the lower mold 16 by the driving component and is movably inserted into the corresponding second recessed structure cavity. This can limit the lateral position of the lower mold 16 and the movable mold 36, ensuring that the movable mold 36 and the lower mold 16 fit tightly together and avoid gaps between them, thereby improving the aesthetics of tire forming.

[0034] The drive assembly includes a second bracket 21 installed at the bottom of the movable seat 5. A second servo motor 22 is fixedly installed at the bottom of the inner cavity of the second bracket 21. An eccentric wheel 23 is fixedly installed at the end of the power output shaft of the second servo motor 22. A movable disk 24 is attached to the top of the eccentric wheel 23. The top of the first T-shaped rod 25 moves through the top of the lower mold 16 and the movable seat 5. The first T-shaped rod 25 is fixedly installed through the top of the movable disk 24. A return spring 26 is movably sleeved on the outer periphery of the first T-shaped rod 25. The two ends of the return spring 26 are fixedly connected to the movable disk 24 and the movable seat 5, respectively.

[0035] Specifically, when the extrusion block moves the movable mold 36 towards the lower mold 16, and the movable mold 36 is in contact with the side wall of the lower mold 16, the second servo motor 22 can be started. The power output shaft of the second servo motor 22 rotates, driving the eccentric wheel 23 to rotate synchronously. The eccentric structure of the eccentric wheel 23 generates an upward thrust during rotation, thereby pushing the movable disk 24 to move upward. When the movable disk 24 moves upward, it compresses the return spring 26, and at the same time drives the first T-shaped rod 25 to move upward, so that the first T-shaped rod 25 passes through the top of the lower mold 16 and inserts into the inner cavity of the second recessed structure at the bottom of the movable mold 36, forming a reliable lateral limiting fit.

[0036] The top of the first T-shaped rod 25 is cut with a first inclined surface in the direction of the lower mold 16, and the part of the second recessed structure that fits with the first inclined surface is the second inclined surface.

[0037] Specifically, when the first T-shaped rod 25 moves upward, the first inclined surface contacts the corresponding second inclined surface. As the first T-shaped rod 25 continues to move upward, the first inclined surface on the first T-shaped rod 25 presses against the second inclined surface on the movable mold 36, causing the movable mold 36 to move towards the lower mold 16 and completely hug the outer periphery of the lower mold 16. This prevents the gap between the lower mold 16 and the movable mold 36 from becoming too large after prolonged use, which would eventually lead to the formation of burrs or flash on the tire surface.

[0038] A rubber pad 19 is fixedly fitted on the contact surface between the lower mold 16 and the movable mold 36.

[0039] Specifically, when the movable mold 36 moves towards the lower mold 16, it can compress the rubber pad 19, thereby improving the sealing between the movable mold 36 and the lower mold 16, effectively preventing glue overflow, and thus improving the aesthetics of tire molding.

[0040] Example 3 like Figure 4 and Figure 13 As shown, the central component includes a conduit 30 that penetrates the bottom of the inner cavity of the lower mold 16 (the conduit 30 is connected to an external air source), and a base plate 31 is fixedly sleeved on the outer periphery of the conduit 30 near the top. A top plate 34 is provided on the top of the base plate 31. An expansion body 35 is fixedly installed between the top plate 34 and the base plate 31. A cavity is opened near the top of the inner cavity of the conduit 30, and a connecting post 33 is slidably connected to the inner cavity of the cavity. Several through holes are opened on the outer periphery of the connecting post 33. The top of the connecting post 33 is fixedly connected to the top plate 34. A connecting spring 32 is movably sleeved on the outer periphery of the connecting post 33, and the two ends of the connecting spring 32 are fixedly connected to the top plate 34 and the conduit 30, respectively.

[0041] Specifically, as the upper mold 17 moves downward, it pushes the top plate 34 downward, compressing the connecting spring 32. The elastic deformation of the connecting spring 32 effectively absorbs the impact force when the upper mold 17 is pressed down, thus buffering the top plate 34 and preventing it from being damaged. An external air source inflates the space formed by the bottom plate 31, the top plate 34, and the expansion body 35 through the conduit 30. After entering through the conduit 30, the gas is evenly distributed into the interior of the expansion body 35 through the through holes on the outer periphery of the connecting column 33. Under the action of air pressure, the expansion body 35 rapidly expands outward, forcing the top plate 34 to have an upward tendency, thereby forming a tight fit with the upper mold 17 and jointly constituting the inner cavity molding space for tire vulcanization. This ensures that the outer periphery of the tire blank is in close contact with the movable mold 36, improving the tire molding effect.

[0042] Example 4 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a stable all-steel engineering tire vulcanizing machine also includes a moving component located in the inner cavity of the upright 1, which is used to drive the moving seat 5 to move longitudinally.

[0043] Specifically, by moving the movable seat 5 to directly below the upper mold 17 using the movable component, precise feeding of the tire blank can be achieved, making it easier for operators to place the tire blank stably on the lower mold 16, thereby significantly improving the overall efficiency of tire vulcanization.

[0044] A stabilizing frame 8 is fixedly installed on the top of the bottom crossbar 2 near both sides. An H-shaped steel bar 9 is fixedly installed on the top of each stabilizing frame 8, and a guide rail 10 is fixedly installed on the top of each H-shaped steel bar 9. A slider 11 is fixedly installed on the bottom of the movable seat 5 near both sides. The slider 11 is slidably connected to the outer periphery of the adjacent guide rail 10. A rack plate 15 is fixedly installed on the opposite side of each H-shaped steel bar 9. A connecting frame 12 is fixedly installed on the opposite side of the movable seat 5 near the front. The top of the connecting frame 12 is fixedly... A first servo motor 13 is fixedly installed. The power output shaft of the first servo motor 13 moves through the bottom of the adjacent connecting frame 12 and is fixedly installed with a gear 14. The opposite side of the gear 14 is respectively meshed with the adjacent rack plate 15. A first bracket 6 is fixedly installed at the bottom of the movable seat 5 near the front side. A downward hydraulic cylinder 7 is installed on the top of the first bracket 6 and the bottom end of the downward hydraulic cylinder 7 moves through the top of the first bracket 6 and is fixedly installed with a positioning block. A positioning groove is opened on the bottom crossbeam 2.

[0045] Specifically, when the tire blank is placed on the lower mold 16, the first servo motor 13 is then started. The power output shaft of the first servo motor 13 drives the gear 14 to rotate. Since the gear 14 meshes with the rack plate 15, the rotation of the gear 14 will drive the moving seat 5 to move horizontally along the guide rail 10. When the lower mold 16 on the moving seat 5 is directly below the upper mold 17, the downward cylinder 7 is started. The piston rod of the downward cylinder 7 extends downward, driving the positioning block at its bottom to descend synchronously until the positioning block is embedded in the positioning groove opened on the bottom crossbar 2, realizing the precise positioning and locking of the moving seat 5, preventing the position from shifting due to equipment vibration during the vulcanization process. After the vulcanization is completed, the piston rod of the downward cylinder 7 retracts, the positioning block disengages from the positioning groove, and the first servo motor 13 rotates in the opposite direction, driving the moving seat 5 to slide along the guide rail 10 to the initial position or the next station, completing a complete vulcanization cycle.

[0046] During operation, the moving assembly is started first. The first servo motor 13 drives the gear 14 to rotate on the rack plate 15, causing the moving seat 5 to move smoothly along the guide rail 10, sliding out from the initial position to the loading position. The operator places the tire blank smoothly on the lower mold 16 on top of the moving seat 5. The first servo motor 13 is started again, driving the moving seat 5 and the tire blank it carries to move directly below the upper mold 17. After it is in place, the downward cylinder 7 is started, pushing its positioning block to embed into the positioning groove of the bottom crossbar 2, realizing the precise positioning and rigid locking of the moving seat 5, preventing vibration displacement during vulcanization. The upward cylinder 4 is started, pushing the upper plate 3 downward as a whole until the movable mold 36 installed at the bottom of the upper plate 3 initially contacts the outer periphery of the lower mold 16. The movable mold cylinder is started, pushing the extrusion block downward. Since the mating surface between the extrusion block and the movable mold 36 is inclined, and the second dovetail block and the guide rod limit the movement... The movable mold 36 is forced to move horizontally inward along the radial direction, tightly hugging the outer periphery of the lower mold 16. The rubber pad 19 is squeezed, forming the first seal to prevent lateral glue overflow. After the movable mold 36 is attached to the side wall of the lower mold 16, the drive assembly is activated. The second servo motor 22 drives the eccentric wheel 23 to rotate, pushing the movable disk 24 to overcome the elastic force of the return spring 26 and move upward. The first T-shaped rod 25 fixed on the movable disk 24 moves upward accordingly. Its top inclined surface guides it to be precisely inserted into the second recessed structure at the bottom of the movable mold 36, applying an additional lateral locking force to the movable mold 36, making it fit more tightly with the lower mold 16. During the radial inward movement of the movable mold 36, the second T-shaped rod 28 fixed on the top of the movable seat 5 will be inserted into the irregular groove 29 at the bottom of the movable mold 36, limiting the movable mold 36 longitudinally (up and down) and preventing it from moving up and down during the high-pressure vulcanization process. The protective pad 27 provides cushioning during the final downward movement of the extrusion block, preventing rigid impact. The upper die cylinder 18 is activated, driving the upper die 17 downwards independently via the connecting rod 20. The protruding structure at the bottom of the upper die 17 precisely inserts into the first recessed structure at the top of each movable die 36, snapping the movable dies 36 together from above to form a complete upper die cavity. This step is crucial for preventing flash gaps under high pressure, achieving precise vertical closure of the die. After mold closing, an external air source supplies air to the central assembly through the conduit 30. Gas enters the expansion body 35 through the through hole on the connecting column 33, causing it to expand upward under air pressure. The connecting spring 32 is used to assist the top plate 34 in resetting after pressure relief. The expanded central component, together with the upper mold 17, the movable mold 36, and the lower mold 16, forms a completely closed cavity with excellent sealing performance. High-temperature and high-pressure medium is injected to vulcanize the tire preform inside the cavity. Under the protection of the multiple composite locking structure (lateral clamping, transverse pin, longitudinal limit, and upper mold fastening), the entire mold system can still maintain structural stability under an internal pressure of 2.0-2.5MPa without any gaps. After vulcanization is completed, the internal cavity pressure is released, the central component deflates and contracts, the upper mold cylinder 18 retracts, and the upper mold 17 rises and unlocks first.Next, the movable mold cylinder retracts, releasing the radial clamping force on the movable mold 36. Subsequently, the second servo motor 22 reverses, and the eccentric wheel 23 rotates away from its highest point. Under the elastic force of the return spring 26, the movable plate 24 drives the first T-shaped rod 25 to descend and reset, releasing the lateral locking. Finally, the upward cylinder 4 retracts, lifting the upper plate 3 and all upper mold components as a whole, retracting and unlocking. The first servo motor 13 is then activated, driving the moving seat 5 to move the vulcanized tire along the guide rail 10 to the unloading station, completing one work cycle.

[0047] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A stable all-steel engineering tire vulcanizing machine, comprising two uprights (1), with crossbeams (2) fixedly installed on opposite sides of the two uprights (1) near the top and bottom; characterized in that: Two uprights (1) are provided with an upper plate (3) near the top on opposite sides. Upper cylinders (4) are fixedly installed on the front and rear sides of the top crossbar (2), and the bottom ends of the upper cylinders (4) are fixedly connected to the upper plate (3). A movable seat (5) is provided below the upper plate (3). A lower mold (16) is provided on the top of the movable seat (5). A central assembly is provided above the movable seat (5). The central assembly is used for central support and positioning of the vulcanized tire. The bottom is provided with an upper mold (17), and a protective shell is fixedly installed on the top of the upper plate (3). An upper mold cylinder (18) is fixedly installed on the top of the protective shell. A connecting rod (20) is fixedly installed at the bottom of the upper mold cylinder (18), and the bottom of the connecting rod (20) is installed on the top of the upper mold (17). A protruding structure is installed at the bottom of the upper mold (17). Several movable molds (36) are provided at the bottom of the upper mold (17). Each movable mold (36) is provided with an adjustment structure. The adjustment structure includes a mounting plate. A movable mold cylinder (38) is mounted on the upper plate (3). The bottom end of the movable mold cylinder (38) extends through the top of the upper plate (3) and is fixedly mounted with an extrusion block (37). Two first dovetail grooves are opened on the rear side of the extrusion block (37). Two first dovetail blocks (39) are fixedly mounted on the front side of the movable mold (36). The upper end of the first dovetail block (39) is inclined towards the axis of the movable mold (36). The first dovetail blocks (39) are slidably connected to adjacent first dovetails. In the inner cavity of the slot, the top of the movable mold (36) is provided with two second dovetail grooves. The bottom of the inner cavity of the second dovetail groove is fixedly installed with a second dovetail block (40), and the second dovetail block (40) is movably connected through a guide rod (41). The outer end of the guide rod (41) is fixedly installed on a fixing ring (42), and the top of the fixing ring (42) is fixedly connected to the upper plate (3). The top of the movable mold (36) is provided with a first recessed structure; the protruding structure is movably inserted into the inner cavity of the adjacent first recessed structure. The stable all-steel engineering tire vulcanizing machine also includes a second recessed structure opened at the bottom of the movable mold (36), and the inner cavity of the second recessed structure is movably connected to the first T-shaped rod (25), and the bottom of the movable seat (5) is provided with a drive assembly; The top of the first T-shaped rod (25) is cut with a first inclined surface in the direction of the lower mold (16), and the part of the second recessed structure that fits with the first inclined surface is the second inclined surface.

2. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: The top of the movable seat (5) is fixedly installed with several second T-shaped rods (28), and the bottom of the movable mold (36) is provided with irregular grooves (29), and the second T-shaped rods (28) are movably inserted into the inner cavity of the irregular grooves (29).

3. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: The top of the movable seat (5) is fixedly installed with a protective pad (27), and the top of the second T-shaped rod (28) penetrates the top of the protective pad (27).

4. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: The drive assembly includes a second bracket (21) installed at the bottom of the movable seat (5). A second servo motor (22) is fixedly installed at the bottom of the inner cavity of the second bracket (21). An eccentric wheel (23) is fixedly installed at the end of the power output shaft of the second servo motor (22). A movable disc (24) is attached to the top of the eccentric wheel (23). The top of the first T-shaped rod (25) moves through the top of the lower mold (16) and the movable seat (5). The first T-shaped rod (25) is fixedly installed through the top of the movable disc (24). The outer periphery of the first T-shaped rod (25) moves through the outer periphery return spring (26). The two ends of the return spring (26) are fixedly connected to the movable disc (24) and the movable seat (5) respectively.

5. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: A rubber pad (19) is fixedly fitted on the contact surface between the lower mold (16) and the movable mold (36).

6. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: The central component includes a conduit (30) that penetrates the bottom of the inner cavity of the lower mold (16), and a base plate (31) is fixedly sleeved on the outer periphery of the conduit (30) near the top. A top plate (34) is provided on the top of the base plate (31), and an expansion body (35) is fixedly installed between the top plate (34) and the base plate (31). A cavity is opened in the inner cavity of the conduit (30) near the top, and a connecting column (33) is slidably connected to the inner cavity of the cavity. The top of the connecting column (33) is fixedly connected to the top plate (34), and a connecting spring (32) is movably sleeved on the outer periphery of the connecting column (33). The two ends of the connecting spring (32) are fixedly connected to the top plate (34) and the conduit (30) respectively.

7. The stable all-steel engineering tire vulcanizing machine according to claim 1, characterized in that: It also includes a moving component located inside the frame (1), which is used to drive the moving seat (5) to move longitudinally.

8. A stable all-steel engineering tire vulcanizing machine according to claim 7, characterized in that: A stabilizing frame (8) is fixedly installed on the top of the bottom crossbar (2) near both sides. An H-shaped steel bar (9) is fixedly installed on the top of the stabilizing frame (8), and a guide rail (10) is fixedly installed on the top of the H-shaped steel bar (9). A slider (11) is fixedly installed on the bottom of the movable seat (5) near both sides. The slider (11) is slidably connected to the outer periphery of the adjacent guide rail (10). A rack plate (15) is fixedly installed on the opposite side of the H-shaped steel bar (9). A connecting frame (12) is fixedly installed on the opposite side of the movable seat (5) near the front. The top of each frame (12) is fixedly equipped with a first servo motor (13). The power output shaft of the first servo motor (13) moves through the bottom of the adjacent connecting frame (12) and is fixedly equipped with a gear (14). The opposite side of the gear (14) is respectively meshed with the adjacent rack plate (15). The bottom of the moving seat (5) is fixedly equipped with a first bracket (6) near the front side. The top of the first bracket (6) is equipped with a downward hydraulic cylinder (7), and the bottom end of the downward hydraulic cylinder (7) moves through the top of the first bracket (6) and is fixedly equipped with a positioning block.

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