Vulcanizing machine for automobile tire production

Abstract

The invention provides a vulcanizing machine for automobile tire production, and relates to the technical field of tire vulcanization molding, the vulcanizing machine comprises a lower die arranged on a rack, a capsule barrel is arranged in the lower die, a center rod is slidably connected in the capsule barrel, a capsule is mounted on the center rod, and the center rod is driven by an operating cylinder; an upper pressing block and a pressing ring are arranged on the rack and located above the capsule in a sliding mode, a lower pressing block is arranged in the lower die in a sliding mode, and the upper pressing block, the lower pressing block and the pressing ring are driven by telescopic air cylinders respectively. The side walls of the upper pressing block and the lower pressing block are designed to be conical. The upper pressing block moves downwards to center an upper steel ring of a tire blank, the lower pressing block moves upwards to center a lower steel ring of the tire blank, and the pressing ring extrudes and positions the tire side at the upper end of the tire blank, so that the tire side at the lower end of the tire blank is attached to the lower die, inclination of the axis of the tire blank is reduced, and the positioning precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire vulcanization molding, and particularly relates to a vulcanizer for automobile tire production. Background Art

[0002] An automobile tire is a circular ring-shaped elastic rubber product that rolls on the ground and is assembled on an automobile. It is usually installed on a metal rim to support the vehicle body, buffer external impacts, achieve contact with the road surface, and ensure the driving performance of the automobile. The general technological process of tire production includes mixing, calendering, extrusion, semi-finished product production, molding, and vulcanization. Among them, the tire molding process is to bond, shape, and wind semi-finished components such as bead rings and rubber compounds on a molding machine according to the structural process requirements of the tire to form a green tire. The green tire is loaded into a mold and a bladder is inserted. Air is inflated into the bladder to make the bladder expand, adhere to the inner wall of the green tire, and discharge the air between the bladder and the inner wall of the green tire to support the green tire. Then, vulcanization is carried out in a high-temperature and high-pressure steam environment. After vulcanization, the surface of the tire also needs to be trimmed to remove excess rubber compounds and defective products.

[0003] Traditional vulcanizers use a manipulator to grab the upper steel ring for positioning the tire green tire. In this process, the force application points during tire hanging and tire mounting and shaping are located at the upper steel ring part. During the shaping process, the friction generated by the fitting between the inside of the green tire and the bladder may cause the manipulator and the upper steel ring to shift, resulting in the misalignment of the tread part and the steel ring, thus affecting the accuracy of green tire shaping, and further leading to uneven vulcanization during the subsequent vulcanization process and affecting the vulcanization quality.

[0004] To solve this technical problem, a patent document with the publication number CN106426679B discloses a tire shaping and vulcanizing machine shaping auxiliary device. This device uses left and right swing mechanisms to swing in synchronously and obliquely oppositely support the left and right armrest mechanisms on the tread of the green tire, so that the tire green tire is centered at the center of the mold loading position in the vulcanization chamber.

[0005] The above-mentioned shaping auxiliary device supports the left and right armrest mechanisms on the tread of the green tire. However, the green tire is made of rubber and is in a plastic state before vulcanization and is prone to deformation. Using the left and right armrest mechanisms to act on the tread for auxiliary positioning will cause the green tire to deform, not only resulting in inaccurate positioning, but also causing asymmetric expansion of the bladder, and further leading to uneven tire vulcanization. Summary of the Invention

[0006] In view of this, the present invention provides a vulcanizer for automobile tire production, which solves the technical problem of uneven vulcanization during the vulcanization process caused by inaccurate positioning of the green tire in the prior art.

[0007] To solve the above technical problems, the present invention provides a vulcanizer for automobile tire production, which includes a lower mold arranged on a frame. A bladder cylinder is provided inside the lower mold, and a center rod is slidably connected inside the bladder cylinder. A capsule is installed on the center rod, and the center rod is driven by a control cylinder; a upper pressing block and a pressing ring are slidably arranged above the capsule on the frame, and a lower pressing block is slidably arranged inside the lower mold. The upper pressing block, the lower pressing block and the pressing ring are respectively driven by telescopic cylinders; The side walls of the upper pressing block and the lower pressing block are both designed to be conical. The side wall of the upper pressing block is inclined from top to bottom towards the direction close to the axis of the upper pressing block, and the side wall of the lower pressing block is inclined from top to bottom towards the direction away from the axis of the lower pressing block. The pressing ring is located outside the upper pressing block and is slidably connected with the upper pressing block.

[0008] By adopting the above technical solution, the control cylinder drives the center rod to move upward, the center rod drives the capsule to move upward, the tire blank is placed on the lower mold, so that the capsule is located inside the tire blank. The telescopic cylinders respectively drive the upper pressing block and the lower pressing block to move, so that the upper pressing block moves downward and extends into the tire blank, and the lower pressing block moves upward and extends into the tire blank. The side wall of the upper pressing block drives the upper steel ring of the tire blank to move during the downward movement and realizes the centering of the upper steel ring. The side wall of the lower pressing block drives the lower steel ring of the tire blank to move during the upward movement and realizes the centering of the lower steel ring. Then, the telescopic cylinder drives the pressing ring to move downward, extrudes and positions the tire side at the upper end of the tire blank, and makes the tire side at the lower end of the tire blank fit with the lower mold, which is beneficial to reducing the inclination of the axis of the tire blank.

[0009] Preferably, the capsule includes a top plate and a bottom plate penetrated by the center rod, and a bladder body connected between the top plate and the bottom plate. An upper rotating plate and a lower rotating plate are rotatably connected to the center rod. A first return spring is connected between the upper rotating plate and the top plate and between the lower rotating plate and the bottom plate. The bottom plate can abut against the lower pressing block, and the top plate can abut against the upper pressing block.

[0010] By adopting the above technical solution, during the centering process of the tire blank, while the lower pressing block moves upward and drives the lower steel ring to be centered, the lower pressing block abuts against and extrudes the bottom plate; while the upper pressing block moves downward and drives the upper steel ring to be centered, the upper pressing block abuts against and extrudes the top plate, and the first return spring is compressed, so that the distance between the bottom plate and the top plate is reduced. After the bladder body expands, it is beneficial for the bladder body to first contact the inner wall of the tire blank and support the inner wall.

[0011] Preferably, a plurality of exhaust grooves are opened on the side walls of the upper pressing block and the lower pressing block, and a plurality of chutes that are slidably matched with the exhaust grooves on the upper pressing block are opened inside the pressing ring.

[0012] By adopting the above technical solution, after inflating the capsule, as the capsule expands, the space between the capsule and the tire blank becomes smaller and smaller. The bladder body first contacts the inner wall of the tire blank and supports the inner wall. The gas between the capsule and the tire blank will gradually be discharged from the exhaust grooves of the upper pressing block and the lower pressing block, reducing the residual gas between the capsule and the tire blank, which is beneficial to improving the positioning accuracy of the tire blank.

[0013] Preferably, a pressing plate is connected to the upper end of the central rod, a groove is formed at the lower end of the upper pressing block, the pressing plate and the upper rotating plate can extend into the groove, and the lower end of the groove can abut against the top plate.

[0014] By adopting the above technical solution, after the bladder abuts against the inner wall of the green tire, the telescopic cylinder drives the upper pressing block to move upward and the lower pressing block to move downward. As the capsule continuously expands, and with the action of the elastic force of the first return spring, the top plate moves upward and the bottom plate moves downward until both the top plate and the bottom plate abut against the sidewall of the green tire, completing the positioning of the green tire.

[0015] Preferably, a support member that can support the bottom plate is hinged to the lower pressing block, and a second return spring is connected between the support member and the lower pressing block.

[0016] By adopting the above technical solution, during the positioning of the green tire, the support member supports the bottom plate. After vulcanization is completed, when the capsule moves downward, it drives the support member to flip, facilitating the capsule to move downward into the bladder cylinder, thereby realizing the blanking of the tire.

[0017] Preferably, the control cylinder is installed on the lifting frame, and a lifting cylinder that can drive the lifting frame to move up and down is provided on the frame.

[0018] By adopting the above technical solution, the lifting cylinder drives the lifting frame to move up and down, the lifting frame drives the control cylinder to move up and down, and further drives the central rod and the capsule to move up and down. After vulcanization is completed, the lifting cylinder drives the lifting frame to move downward, facilitating the capsule to move downward into the bladder cylinder, thereby realizing the blanking of the tire.

[0019] Preferably, a rotating roller that can abut against the tire is rotatably connected to the frame, the rotating roller is driven by a driving motor, and a first scraper for cleaning the inner ring of the tire is provided at the notch of the exhaust groove.

[0020] By adopting the above technical solution, after vulcanization is completed, the control cylinder drives the central rod and the capsule to move upward, the capsule and the tire move upward synchronously, the sidewall at the lower end of the tire does not contact the lower mold, the tread of the tire abuts against the rotating roller, the telescopic cylinder drives the lower pressing block to move upward, the telescopic cylinder drives the upper pressing block to move downward, so that the first scraper at the notch of the exhaust groove on the upper pressing block approaches the inner ring at the upper end of the tire, and the first scraper at the notch of the exhaust groove on the lower pressing block approaches the inner ring at the lower end of the tire. The driving motor drives the rotating roller to rotate, the rotating roller drives the tire to rotate, the tire drives the capsule to rotate synchronously, the capsule drives the upper rotating plate and the lower rotating plate to rotate. While the tire is rotating, the first scraper cleans the flash that appears on the inner ring after tire vulcanization, eliminating the need for subsequent separate cleaning of the inner ring and improving the production efficiency of the tire.

[0021] Preferably, a second scraper for cleaning the tread of the tire is provided on the frame.

[0022] By adopting the above technical solution, while the tire rotates, the second scraper cleans the flash on the tread surface, which helps to improve the production efficiency of the tire.

[0023] Preferably, an upper mold cooperating with the lower mold is provided on the frame, and the upper mold is driven by a hydraulic cylinder.

[0024] By adopting the above technical solution, after the green tire is positioned on the lower mold, the hydraulic cylinder drives the upper mold to move downward. After the vulcanization of the green tire is completed, the hydraulic cylinder drives the upper mold to move upward, which facilitates the blanking of the tire.

[0025] Preferably, a rotating frame is rotatably installed on the frame, and lower molds are installed at both ends of the rotating frame. The rotating frame is driven by a rotating motor to alternately rotate the two lower molds to the position below the upper mold.

[0026] By adopting the above technical solution, the rotating motor drives the two lower molds to alternately rotate to the position below the upper mold. The lower mold cooperates with the upper mold to complete the vulcanization of the green tire. At the same time, the blanking of the vulcanized tire and the loading of the next green tire are realized on the other lower mold, which is beneficial to improving the vulcanization efficiency.

[0027] The beneficial effects of the above technical solutions of the present invention are as follows: 1. The upper pressing block moves downward to center the upper steel ring of the green tire, and the lower pressing block moves upward to center the lower steel ring of the green tire. The pressing ring squeezes and positions the tire side at the upper end of the green tire, making the tire side at the lower end of the green tire fit with the lower mold, which is beneficial to reducing the inclination of the axis of the green tire and improving the positioning accuracy. At the same time, by positioning the upper steel ring and the lower steel ring, the force on the tread surface is reduced, which is beneficial to reducing the deformation of the green tire.

[0028] 2. After the capsule in the present invention is inflated, as the capsule expands, the space between the capsule and the green tire becomes smaller and smaller. The capsule body first contacts and supports the inner wall of the green tire, and the gas between the capsule and the green tire will gradually be discharged from the exhaust grooves of the upper pressing block and the lower pressing block, reducing the residual gas between the capsule and the green tire, which is beneficial to improving the positioning accuracy of the green tire.

[0029] 3. After vulcanization, the first scraper at the notch of the exhaust groove cleans the flash that appears on the inner ring of the tire after vulcanization, and the second scraper cleans the flash on the tread surface, which helps to improve the production efficiency of the tire. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of a vulcanizer for producing automobile tires according to the present invention; Figure 2 It is a side view of the rotating frame of the present invention; Figure 3 It is Figure 2 The enlarged view at A in Figure 4Cross-sectional view of the lower mold of the present invention; Figure 5 is Figure 4 an enlarged view of part B in; Figure 6 Schematic structural diagram of the lower module and the capsule of the present invention; Figure 7 Partial structural schematic diagram of the lower mold base and the lower mold motor of the present invention; Figure 8 Schematic structural diagram of the mold piece moving away from the axis of the lower mold base of the present invention; Figure 9 Schematic structural diagram of the mold piece moving towards the axis of the lower mold base of the present invention.

[0031] In the figure: 1. Frame; 11. Rotary frame; 12. Rotary motor; 13. Rotating roller; 14. Driving motor; 15. Scraper II; 2. Upper mold; 21. Hydraulic cylinder; 3. Lower mold; 31. Lower mold base; 311. Arc groove; 312. Limit groove; 32. Lower mold base motor; 321. Gear; 33. Mold piece; 34. Tooth ring; 4. Lifting frame; 41. Lifting cylinder; 42. Manipulating cylinder; 43. Central rod; 431. Upper rotating plate; 432. Lower rotating plate; 433. First return spring; 434. Pressing plate; 44. Connecting piece; 45. Capsule tube; 5. Capsule; 51. Top plate; 52. Bottom plate; 53. Capsule body; 6. Upper pressing block; 61. Upper pressing block telescopic cylinder; 62. Exhaust groove; 63. Groove; 64. Scraper I; 7. Pressing ring; 71. Pressing ring telescopic cylinder; 72. Slide groove; 8. Lower pressing block; 81. Lower pressing block telescopic cylinder; 82. Support piece; 9. Green tire. Detailed implementation method

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will combine the Figures 1-9 of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention.

[0033] Embodiment This embodiment provides a vulcanizer for automobile tire production, as Figure 1 shown, including a frame 1, an upper mold 2, and a lower mold 3.

[0034] As Figure 1 shown, the upper mold 2 is located above the frame 1, the lower mold 3 is located below the frame 1, and a hydraulic cylinder 21 for driving the upper mold 2 to lift and lower is provided on the frame 1. After positioning the green tire 9 on the lower mold 3, the hydraulic cylinder 21 drives the upper mold 2 to move downward to achieve mold closing and vulcanization. After vulcanization, the hydraulic cylinder 21 drives the upper mold 2 to move upward to complete mold opening. This is the prior art and will not be elaborated here.

[0035] As Figure 1 and Figure 2As shown in the figure, a rotary frame 11 is rotatably mounted on a frame 1. Below the upper die 2 on the rotary frame 11 is a vulcanization station, and at one end of the rotary frame 11 opposite to the vulcanization station is a loading and unloading station. Lower dies 3 are installed at both the loading and unloading station and the vulcanization station. A rotary motor 12 is provided on the frame 1. The rotary motor 12 rotates forward and backward to drive the rotary frame 11 to rotate forward 180° or backward 180°, so that the lower dies 3 at the loading and unloading station and the vulcanization station alternately rotate below the upper die 2.

[0036] As Figure 1 and Figure 2 shown, while the green tire 9 is being vulcanized at the vulcanization station, the loading and unloading station realizes the unloading of the vulcanized tire and the loading of the next green tire 9, which is beneficial to improving the vulcanization efficiency.

[0037] As Figure 4 shown, the lower die 3 includes a lower die base 31 rotatably connected to the frame 1 and a lower die base motor 32 for driving the lower die base 31 to rotate.

[0038] As Figure 7 and Figure 9 shown, a plurality of fan-shaped die segments 33 are provided at the upper end of the lower die base 31. A slider (not marked in the figure) is installed at the lower part of the die segment 33. An arc-shaped groove 311 is formed in the lower die base 31, and the slider can slide in the arc-shaped groove 311.

[0039] As Figure 7 and Figure 9 shown, a gear ring 34 is provided at the edge of the lower die base 31. A gear 321 meshing with the gear ring 34 is installed on the output shaft of the lower die base motor 32. The lower die base motor 32 drives the gear 321, the gear ring 34 and the lower die base 31 to rotate in sequence. Due to the cooperation of the slider and the arc-shaped groove 311, while the arc-shaped groove 311 rotates following the lower die base 31, it drives the slider to move, and further drives the die segment 33 to move radially along the lower die base 31. As Figure 8 shown, when the die segment 33 moves towards the direction close to the axis of the lower die base 31, the distance between two adjacent die segments 33 gradually decreases, which is used for supporting the green tire 9.

[0040] As Figure 4 and Figure 5 shown, two lifting cylinders 41 are provided below the rotary frame 11. The output shafts of the two lifting cylinders 41 are connected to a lifting frame 4. A control cylinder 42 is installed on the lifting frame 4. A central rod 43 is installed on the output shaft of the control cylinder 42. The axis of the central rod 43 extends in the vertical direction, and a bladder 5 is installed on the central rod 43.

[0041] As Figure 4 and Figure 5As shown, a connecting member 44 is installed below the rotating frame 11. The connecting member 44 is of a hollow structure. A bladder cylinder 45 is installed inside the connecting member 44. The bladder cylinder 45 is located inside the lower die holder 31. The actuating cylinder 42 and the central rod 43 are located inside the bladder cylinder 45.

[0042] As Figure 4 and Figure 5 shown, the lifting cylinder 41 drives the lifting frame 4 and the actuating cylinder 42 to move downward. The actuating cylinder 42 drives the central rod 43 and the capsule 5 to move downward, so that the capsule 5 is located inside the bladder cylinder 45, thereby separating the capsule 5 from the vulcanized tire, facilitating the blanking of the tire.

[0043] As Figure 4 shown, an upper pressing block 6 and a pressing ring 7 are slidably connected above the loading and unloading station on the frame 1. The frame 1 is provided with an upper pressing block telescopic cylinder 61 and a pressing ring telescopic cylinder 71, which respectively drive the upper pressing block 6 and the pressing ring 7 to move up and down.

[0044] As Figure 4 and Figure 5 shown, a lower pressing block 8 is provided between the connecting member 44 and the bladder cylinder 45. The lower pressing block 8 is slidably connected to the connecting member 44. The connecting member 44 is provided with a lower pressing block telescopic cylinder 81 for driving the lower pressing block 8 to move up and down.

[0045] As Figure 4 and Figure 5 shown, the side walls of the upper pressing block 6 and the lower pressing block 8 are both designed to be conical. The side wall of the upper pressing block 6 is inclined from top to bottom towards the direction close to the axis of the upper pressing block 6, and the side wall of the lower pressing block 8 is inclined from top to bottom towards the direction away from the axis of the lower pressing block 8.

[0046] As Figure 7 and Figure 9 shown, the lower die holder motor 32 drives the lower die holder 31 to rotate. The lower die holder 31 drives the die segment 33 to move in the radial direction towards the axis of the lower die holder 31 until two adjacent die segments 33 are in contact. The green tire 9 is placed on the die segment 33. As Figure 8 shown, the lower die holder motor 32 drives the lower die holder 31 to rotate in the reverse direction, so that the die segment 33 moves in the radial direction away from the axis of the lower die holder 31 to make way for the upward movement of the lower pressing block 8.

[0047] As Figure 4 and Figure 5 shown, the lower pressing block telescopic cylinder 81 drives the lower pressing block 8 to move upward, and the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 to move upward. The upper pressing block 6 moves downward and extends into the green tire 9, and the lower pressing block 8 moves upward and extends into the green tire 9. The side wall of the upper pressing block 6 drives the upper steel ring of the green tire 9 to move during the downward movement and achieves the centering of the upper steel ring; the side wall of the lower pressing block 8 drives the lower steel ring of the green tire 9 to move during the upward movement and achieves the centering of the lower steel ring.

[0048] As shown in Figure 4 and Figure 5 shown, the pressing ring telescopic cylinder 71 drives the pressing ring 7 to move downward, extruding and positioning the sidewall of the upper end of the green tire 9, so that the sidewall of the lower end of the green tire 9 fits with the lower mold 3, which is beneficial to reducing the inclination of the axis of the green tire 9.

[0049] Among them, as shown in Figure 5 shown, the bladder 5 includes a top plate 51, a bottom plate 52 and a bladder body 53.

[0050] As shown in Figure 4 and Figure 5 shown, the center rod 43 sequentially penetrates through the bottom plate 52 and the top plate 51 from bottom to top. The plate surfaces of the bottom plate 52 and the top plate 51 are parallel and both are perpendicular to the axial direction of the center rod 43. The bladder body 53 is connected between the top plate 51 and the bottom plate 52. After the bladder 5 is inflated, the bladder body 53 can expand to support the green tire 9.

[0051] As shown in Figure 5 shown, an upper rotating plate 431 and a lower rotating plate 432 are rotatably connected to the center rod 43. The upper rotating plate 431 and the lower rotating plate 432 are parallel. The upper rotating plate 431 is located above the top plate 51, and the lower rotating plate 432 is located below the bottom plate 52. A first return spring 433 is connected between the upper rotating plate 431 and the top plate 51 and between the lower rotating plate 432 and the bottom plate 52. The first return spring 433 is sleeved on the center rod 43. The upper end of the center rod 43 is connected with a pressing plate 434, and the pressing plate 434 is located above the upper rotating plate 431.

[0052] As shown in Figure 4 and Figure 6 shown, a plurality of exhaust grooves 62 are formed on the side walls of the upper pressing block 6 and the lower pressing block 8, and a plurality of sliding grooves 72 are correspondingly formed inside the pressing ring 7. The plurality of sliding grooves 72 are in sliding fit with the plurality of exhaust grooves 62 on the upper pressing block 6.

[0053] As shown in Figure 4 and Figure 5 shown, a groove 63 is formed at the lower end of the upper pressing block 6. The pressing plate 434 and the upper rotating plate 431 can extend into the groove 63, and the lower end of the groove 63 can abut against the top plate 51.

[0054] As shown in Figure 5 and Figure 8 shown, a plurality of limiting grooves 312 are also correspondingly formed inside the lower mold base 31 and on the connecting member 44. The plurality of limiting grooves 312 are in sliding fit with the plurality of exhaust grooves 62 on the lower pressing block 8.

[0055] As shown in Figure 5 and Figure 6As shown, a plurality of support members 82 capable of supporting the bottom plate 52 are hinged on the lower pressing block 8. The support members 82 are rod-shaped structures, and a second return spring (not shown in the figure), which is a torsion spring, is connected between the support members 82 and the lower pressing block 8.

[0056] As Figure 4 and Figure 5 shown, during the centering process of the green tire 9, when the lower pressing block 8 moves upward and drives the lower steel ring to be centered, the support member 82 abuts against and presses the bottom plate 52; when the upper pressing block 6 moves downward and drives the upper steel ring to be centered, the pressing plate 434 and the upper rotating plate 431 extend into the groove 63. The lower end of the groove 63 abuts against the top plate 51 and gradually presses the top plate 51, and the first return spring 433 is compressed, reducing the distance between the bottom plate 52 and the top plate 51.

[0057] As Figure 4 and Figure 5 shown, after the green tire 9 is centered, the capsule 5 is inflated. After the capsule body 53 expands, the capsule body 53 first contacts the inner wall of the green tire 9 and supports the inner wall. The gas between the capsule 5 and the green tire 9 will gradually be discharged from the exhaust grooves 62 of the upper pressing block 6 and the lower pressing block 8, reducing the residual gas between the capsule 5 and the green tire 9, which is beneficial to improving the positioning accuracy of the green tire 9.

[0058] As Figure 4 and Figure 5 shown, when the capsule body 53 abuts against the inner wall of the green tire 9, the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 to move upward, and the lower pressing block telescopic cylinder 81 drives the lower pressing block 8 to move downward. As the capsule 5 continues to expand, together with the action of the elastic force of the first return spring 433, the top plate 51 moves upward and the bottom plate 52 moves downward until both the top plate 51 and the bottom plate 52 abut against the sidewall of the green tire 9, completing the positioning of the green tire 9.

[0059] As Figure 2 shown, a rotating roller 13 is rotatably connected to the part of the frame 1 located at the loading and unloading station, and a driving motor 14 for driving the rotating roller 13 to rotate is further provided on the frame 1. The axis of the rotating roller 13 extends in the vertical direction, and the side surface of the rotating roller 13 can abut against the tread of the vulcanized tire and drive the tire to rotate.

[0060] As Figure 4 and Figure 6 shown, a first scraper 64 capable of cleaning the inner ring of the tire is provided at the notch of the exhaust grooves 62 of the upper pressing block 6 and the lower pressing block 8. As Figure 3 shown, a second scraper 15 capable of cleaning the tread of the tire is provided below the rotating roller 13 on the frame 1.

[0061] As Figure 4 and Figure 5As shown, after vulcanization is completed, the actuating cylinder 42 drives the center rod 43 and the capsule 5 to move upward. The capsule 5 drives the tire to move upward synchronously. The sidewall at the lower end of the tire does not contact the die plate 33, and the tread of the tire abuts against the rotating roller 13. The retractable cylinder 81 of the lower pressing block drives the lower pressing block 8 to move upward, and the retractable cylinder 61 of the upper pressing block drives the upper pressing block 6 to move downward, so that the scraper 64 at the notch of the exhaust groove 62 on the upper pressing block 6 approaches the inner ring at the upper end of the tire, and the scraper 64 at the notch of the exhaust groove 62 on the lower pressing block 8 approaches the inner ring at the lower end of the tire. The drive motor 14 drives the rotating roller 13 to rotate. The rotating roller 13 drives the tire to rotate. The tire drives the capsule 5 to rotate synchronously. The capsule 5 drives the upper rotating plate 431 and the lower rotating plate 432 to rotate. While the tire is rotating, the scraper 64 cleans the flash that appears on the inner ring after the tire is vulcanized, as Figure 3 shown, the scraper 15 cleans the flash on the tread, which helps to improve the production efficiency of the tire.

[0062] The implementation principle of a vulcanizer for automobile tire production in this embodiment: At the loading and unloading station, the actuating cylinder 42 drives the center rod 43 to move upward. The center rod 43 drives the capsule 5 to move upward. The lower die base motor 32 drives the lower die base 31 to rotate. The lower die base 31 drives the die plate 33 to move in the radial direction close to the axis of the lower die base 31 until two adjacent die plates 33 abut against each other. The green tire 9 is placed on the die plate 33, and the capsule 5 is located inside the green tire 9. The lower die base motor 32 drives the lower die base 31 to rotate in the reverse direction, so that the die plate 33 moves in the radial direction away from the axis of the lower die base 31.

[0063] The retractable cylinder 81 of the lower pressing block drives the lower pressing block 8 to move upward, and the retractable cylinder 61 of the upper pressing block drives the upper pressing block 6 to move upward. The side wall of the upper pressing block 6 drives the upper steel ring of the green tire 9 to move during the downward movement and realizes the centering of the upper steel ring; the side wall of the lower pressing block 8 drives the lower steel ring of the green tire 9 to move during the upward movement and realizes the centering of the lower steel ring; the retractable cylinder 71 of the pressing ring drives the pressing ring 7 to move downward to squeeze and position the sidewall at the upper end of the green tire 9.

[0064] While the lower pressing block 8 moves upward and drives the lower steel ring to be centered, the support member 82 abuts against and squeezes the bottom plate 52; while the upper pressing block 6 moves downward and drives the upper steel ring to be centered, the lower end of the groove 63 of the upper pressing block 6 abuts against the top plate 51 and gradually squeezes the top plate 51, and the first return spring 433 is compressed, so that the distance between the bottom plate 52 and the top plate 51 is reduced.

[0065] After the green tire 9 is centered, the capsule 5 is inflated. After the bladder 53 expands, the bladder 53 first contacts the inner wall of the green tire 9 and supports the inner wall. When the bladder 53 abuts against the inner wall of the green tire 9, the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 to move upward, and the lower pressing block telescopic cylinder 81 drives the lower pressing block 8 to move downward. As the capsule 5 continues to expand, and with the action of the elastic force of the first return spring 433, the top plate 51 moves upward and the bottom plate 52 moves downward until both the top plate 51 and the bottom plate 52 abut against the sidewall of the green tire 9, completing the positioning of the green tire 9. The gas between the capsule 5 and the green tire 9 will gradually be discharged from the exhaust grooves 62 of the upper pressing block 6 and the lower pressing block 8, which is beneficial to reducing the residual gas between the capsule 5 and the green tire 9.

[0066] The rotation motor 12 drives the rotating frame 11 to rotate, transferring the positioned green tire 9 to the vulcanization station. The hydraulic cylinder 21 drives the upper mold 2 to move downward to achieve mold closing and vulcanization. After vulcanization, the hydraulic cylinder 21 drives the upper mold 2 to move upward to complete mold opening. The rotation motor 12 drives the rotating frame 11 to rotate in the reverse direction, transferring the vulcanized tire to the loading and unloading station.

[0067] The control cylinder 42 drives the center rod 43 and the capsule 5 to move upward. The capsule 5 drives the tire to move upward synchronously, so that the lower end of the tire does not contact the die plate 33, and the tread of the tire abuts against the rotating roller 13. The lower pressing block telescopic cylinder 81 drives the lower pressing block 8 to move upward, and the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 to move downward, so that the scraper 64 at the notch of the exhaust groove 62 on the upper pressing block 6 approaches the inner ring of the upper end of the tire, and the scraper 64 at the notch of the exhaust groove 62 on the lower pressing block 8 approaches the inner ring of the lower end of the tire. The drive motor 14 drives the rotating roller 13 to rotate. The rotating roller 13 drives the tire to rotate. The tire drives the capsule 5 to rotate synchronously. The scraper 64 cleans the flash on the inner ring after the tire is vulcanized, and the scraper 15 cleans the flash on the tread.

[0068] After the capsule 5 deflates, the lifting cylinder 41 drives the lifting frame 4 and the control cylinder 42 to move downward. The control cylinder 42 drives the center rod 43 and the capsule 5 to move downward, so that the capsule 5 is located inside the capsule cylinder 45, thus separating the capsule 5 from the vulcanized tire, facilitating the unloading of the tire.

[0069] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

Claims

1. A vulcanizing machine for automobile tire production, comprising a lower mold (3) arranged on a frame (1), a bladder (45) being arranged in the lower mold (3), a center rod (43) being slidably connected in the bladder (45), a bladder (5) being mounted on the center rod (43), and the center rod (43) being driven by a control cylinder (42); characterized in that: An upper pressing block (6) and a pressing ring (7) are slidably provided on the frame (1) above the capsule (5), and a lower pressing block (8) is slidably provided in the lower mold (3). The upper pressing block (6), the lower pressing block (8) and the pressing ring (7) are driven by telescopic cylinders respectively. The side walls of the upper pressing block (6) and the lower pressing block (8) are both designed to be conical. The side walls of the upper pressing block (6) are inclined from top to bottom in a direction close to the axis of the upper pressing block (6), and the side walls of the lower pressing block (8) are inclined from top to bottom in a direction away from the axis of the lower pressing block (8). The pressing ring (7) is located on the outer side of the upper pressing block (6) and is slidably connected to the upper pressing block (6).

2. The vulcanizing machine for automobile tire production according to claim 1, characterized in that: The capsule (5) comprises a top plate (51) and a bottom plate (52) penetrated by a central rod (43), and a capsule body (53) connected between the top plate (51) and the bottom plate (52); an upper rotating plate (431) and a lower rotating plate (432) are rotatably connected to the central rod (43); a return spring (433) is connected between the upper rotating plate (431) and the top plate (51), and between the lower rotating plate (432) and the bottom plate (52); the bottom plate (52) can abut against a lower pressing block (8), and the top plate (51) can abut against an upper pressing block (6).

3. The vulcanizing machine for automobile tire production according to claim 2, characterized in that: A plurality of exhaust grooves (62) are provided on the side walls of the upper pressing block (6) and the lower pressing block (8), and a plurality of slide grooves (72) are provided inside the pressing ring (7) and are slidably matched with the exhaust grooves (62) on the upper pressing block (6).

4. The vulcanizing machine for automobile tire production according to claim 3, characterized in that: The upper end of the center rod (43) is connected to a pressing plate (434), and the lower end of the upper pressing block (6) is provided with a groove (63). The pressing plate (434) and the upper rotating plate (431) can extend into the groove (63), and the lower end of the groove (63) can abut against the top plate (51).

5. The vulcanizing machine for automobile tire production according to claim 4, characterized in that: A support member (82) capable of supporting the bottom plate (52) is hingedly connected to the lower pressing block (8), and a second return spring is connected between the support member (82) and the lower pressing block (8).

6. The vulcanizing machine for automobile tire production according to claim 5, characterized in that: The operating cylinder (42) is installed on the lifting frame (4), and the frame (1) is provided with a lifting cylinder (41) capable of driving the lifting frame (4) to move upward and downward.

7. The vulcanizing machine for automobile tire production according to claim 6, characterized in that: A rotating roller (13) capable of abutting against a tire is rotatably connected to the frame (1), the rotating roller (13) being driven by a driving motor (14), and a scraper (64) capable of cleaning the inner ring of the tire is provided at the notch of the exhaust groove (62).

8. The vulcanizing machine for automobile tire production according to claim 7, characterized in that: The frame (1) is provided with a scraper (15) capable of cleaning the tread of the tire.

9. The vulcanizing machine for automobile tire production according to claim 8, characterized in that: An upper die (2) cooperating with a lower die (3) is provided on the frame (1), and the upper die (2) is driven by a hydraulic cylinder (21).

10. The vulcanizing machine for automobile tire production according to claim 9, characterized in that: A rotating frame (11) is rotatably mounted on the frame (1), and lower molds (3) are mounted on both ends of the rotating frame (11). The rotating frame (11) is driven by a rotating motor (12) so that the two lower molds (3) are alternately rotated to be located below the upper mold (2).

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