A vulcanizer for automobile tire production

Abstract

The present invention provides a vulcanizing machine for automobile tire production, which relates to the technical field of tire vulcanization molding, including a lower mold arranged on a frame, a bladder provided in the lower mold, a center rod slidably connected in the bladder, a bladder installed on the center rod, and the center rod driven by an operating cylinder; an upper pressure block and a pressure ring are slidably provided above the bladder on the frame, a lower pressure block is slidably provided in the lower mold, and the upper pressure block, the lower pressure block and the pressure ring are respectively driven by telescopic cylinders; the side walls of the upper pressure block and the lower pressure block are both designed to be conical. The upper pressure block of the present invention moves downward to center the upper steel ring of the tire blank, and the lower pressure block moves upward to center the lower steel ring of the tire blank, and the pressure ring squeezes and positions the sidewall of the upper end of the tire blank, so that the sidewall of the lower end of the tire blank fits with the lower mold, which is conducive to reducing the inclination of the tire blank axis and improving positioning accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of tire vulcanization and molding, and in particular to a vulcanizing machine for producing automobile tires. Background Art

[0002] Automobile tires are circular, ground-engaging, rolling, elastic rubber products installed on vehicles. They are typically mounted on metal rims to support the vehicle body, cushion external impacts, ensure contact with the road, and ensure the vehicle's driving performance. The general tire production process includes mixing, calendering, extrusion, semi-finished product production, molding, and vulcanization. The tire molding process involves fitting, shaping, and winding semi-finished components, such as tire beads and rubber, on a molding machine according to the tire's structural and process requirements to form a green tire. The green tire is then placed in a mold and filled with a bladder. Air is then inflated, causing the bladder to expand and adhere to the inner wall of the green tire, expelling any air between the bladder and the inner wall to support the green tire. The tire is then vulcanized in a high-temperature, high-pressure steam environment. After vulcanization, the tire surface is trimmed to remove excess rubber and defective parts.

[0003] Traditional vulcanizers use a robotic arm to grasp the upper rim and position the green tire. During this process, the force applied to the green tire during mounting and shaping is located on the upper rim. During the shaping process, the contact between the interior of the green tire and the bladder generates friction, which can cause the robotic arm and the upper rim to shift, resulting in misalignment between the tread and the rim. This affects the accuracy of the green tire shaping process, leading to uneven vulcanization and poor vulcanization quality.

[0004] To address this technical issue, patent publication CN106426679B discloses a tire shaping and curing press auxiliary device. This device utilizes left and right swing mechanisms to simultaneously swing in and out, and positions left and right handrails to support the tire's tread at an angle relative to each other, thereby centering the tire in the curing chamber's mold loading area.

[0005] The above-mentioned shaping auxiliary device is supported on the tread of the tire blank through the left and right armrest mechanisms. However, the tire blank is made of rubber and is in a plastic state before vulcanization, which is easy to deform. Auxiliary positioning through the left and right armrest mechanisms on the tread will cause the tire blank to deform, which will not only lead to inaccurate positioning, but also cause asymmetric expansion of the bladder, and thus lead to uneven vulcanization of the tire. Summary of the Invention

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

[0007] To solve the above technical problems, the present invention provides a vulcanizer for automobile tire production, comprising a lower mold arranged on a frame, a bladder provided in the lower mold, a center rod slidably connected in the bladder, a bladder mounted on the center rod, and the center rod driven by a control cylinder; an upper pressing block and a pressing ring slidably provided above the bladder on the frame, a lower pressing block slidably provided in the lower mold, and the upper pressing block, the lower pressing block, and the pressing ring are respectively driven by telescopic cylinders;

[0008] The side walls of the upper pressing block and the lower pressing block are designed to be conical. The side walls of the upper pressing block are inclined from top to bottom toward the direction close to the axis of the upper pressing block, and the side walls of the lower pressing block are inclined from top to bottom toward the direction away from the axis of the lower pressing block. The pressure ring is located on the outside of the upper pressing block and is slidably connected to the upper pressing block.

[0009] By adopting the above technical solution, the air cylinder is operated to drive the center rod upward, which in turn drives the bladder upward, placing the green tire on the lower mold so that the bladder is located inside the green tire. The telescopic cylinder drives the upper and lower pressure blocks to move respectively, causing the upper pressure block to move downward and extend into the green tire, while the lower pressure block to move upward and extend into the green tire. During the downward movement, the sidewall of the upper pressure block drives the upper steel rim of the green tire to move and achieve centering on the upper steel rim. During the upward movement, the sidewall of the lower pressure block drives the lower steel rim of the green tire to move and achieve centering on the lower steel rim. Then, the telescopic cylinder drives the pressure ring downward, squeezing and positioning the sidewall at the upper end of the green tire so that the sidewall at the lower end of the green tire fits into the lower mold, which helps reduce the inclination of the green tire axis.

[0010] Preferably, the capsule includes a top plate and a bottom plate penetrated by a central rod, and a capsule body connected between the top plate and the bottom plate. An upper rotating plate and a lower rotating plate are rotatably connected to the central rod. A 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 pressure block, and the top plate can abut against the upper pressure block.

[0011] By adopting the above technical solution, during the process of centering the tire, the lower pressure block moves upward and drives the lower steel ring to be centered, while the lower pressure block abuts and squeezes the bottom plate; the upper pressure block moves downward and drives the upper steel ring to be centered, while the upper pressure block abuts and squeezes the top plate. When the return spring is compressed, the distance between the bottom plate and the top plate is reduced. After the bladder expands, it is beneficial for the bladder to first contact the inner wall of the tire and support the inner wall.

[0012] Preferably, a plurality of exhaust grooves are provided on the side walls of the upper pressing block and the lower pressing block, and a plurality of sliding grooves that slidably cooperate with the exhaust grooves on the upper pressing block are provided inside the pressing ring.

[0013] By adopting the above technical solution, after the capsule is inflated, as the capsule expands, the space between the capsule and the tire blank becomes smaller and smaller. The capsule 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 conducive to improving the accuracy of tire blank positioning.

[0014] Preferably, the upper end of the center rod is connected to a pressure plate, and the lower end of the upper pressure block is provided with a groove, the pressure plate and the upper rotating plate can extend into the groove, and the lower end of the groove can abut against the top plate.

[0015] By adopting the above technical solution, when the bladder abuts against the inner wall of the tire, the telescopic cylinder drives the upper pressure block to move upward and the lower pressure block to move downward. As the bladder continues to expand, coupled with the action of the elastic force of the return spring, the top plate moves up and the bottom plate moves down until both the top plate and the bottom plate abut against the sidewall of the tire, completing the positioning of the tire.

[0016] Preferably, a support member capable of supporting the bottom plate is hinged on the lower pressing block, and a second return spring is connected between the support member and the lower pressing block.

[0017] By adopting the above technical solution, during the positioning of the tire blank, the support member supports the bottom plate. After vulcanization is completed, the support member is driven to flip during the downward movement of the bladder, which facilitates the downward movement of the bladder into the bladder tube, thereby realizing the unloading of the tire.

[0018] Preferably, the operating cylinder is installed on the lifting frame, and the frame is provided with a lifting cylinder that can drive the lifting frame to move up and down.

[0019] By adopting the above technical solution, the lifting cylinder drives the lifting frame to move up and down, the lifting frame drives the operating cylinder to move up and down, and then drives the center rod and the capsule to move up and down. After vulcanization is completed, the lifting cylinder drives the lifting frame to move down, so that the capsule can move down into the bladder tube, thereby realizing the unloading of the tire.

[0020] Preferably, a rotating roller capable of contacting the tire is rotatably connected to the frame, the rotating roller is driven by a driving motor, and the notch of the exhaust groove is provided with a scraper capable of cleaning the inner ring of the tire.

[0021] By adopting the above technical solution, after vulcanization is completed, the operating cylinder drives the center rod and the capsule to move upward, the capsule and the tire move upward synchronously, the sidewall of 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 pressure block to move upward, and the telescopic cylinder drives the upper pressure block to move downward, so that the scraper at the exhaust groove notch on the upper pressure block is close to the inner ring of the upper end of the tire, and the scraper at the exhaust groove notch on the lower pressure block is close to the inner ring of 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, and while the tire rotates, the scraper cleans the flash that appears on the inner ring of the tire after vulcanization, and there is no need to clean the inner ring separately later, thereby improving the production efficiency of the tire.

[0022] Preferably, a scraper 2 capable of cleaning the tread of the tire is provided on the frame.

[0023] By adopting the above technical solution, while the tire is rotating, the scraper 2 cleans the flash on the tread, which helps to improve the production efficiency of the tire.

[0024] Preferably, an upper die cooperating with the lower die is provided on the frame, and the upper die is driven by a hydraulic cylinder.

[0025] By adopting the above technical solution, after the tire is positioned on the lower mold, the hydraulic cylinder drives the upper mold to move downward. After the tire is vulcanized, the hydraulic cylinder drives the upper mold to move upward, which facilitates the unloading of the tire.

[0026] Preferably, a rotating frame is rotatably mounted on the frame, lower molds are mounted on both ends of the rotating frame, and the rotating frame is driven by a rotating motor so that the two lower molds rotate alternately to be located below the upper mold.

[0027] By adopting the above technical solution, the rotary motor drives the two lower molds to rotate alternately to the position below the upper mold. The lower mold cooperates with the upper mold to complete the vulcanization of the tire. At the same time, the other lower mold realizes the unloading of the vulcanized tire and the loading of the next tire, which is conducive to improving the vulcanization efficiency.

[0028] The beneficial effects of the above technical solution of the present invention are as follows:

[0029] 1. The upper pressing block of the present invention moves downward to center the upper steel rim of the green tire, and the lower pressing block moves upward to center the lower steel rim of the green tire. The pressure ring squeezes and positions the sidewall of the upper end of the green tire, so that the sidewall of the lower end of the green tire fits with the lower mold, which is beneficial to reducing the inclination of the green tire axis and improving positioning accuracy. At the same time, by positioning the upper and lower steel rims, the force on the tread is reduced, which is beneficial to reducing deformation of the green tire.

[0030] 2. After the capsule of the present invention is inflated, as the capsule expands, the space between the capsule and the tire becomes smaller and smaller. The capsule first contacts the inner wall of the tire and supports the inner wall. The gas between the capsule and the tire will gradually be discharged from the exhaust grooves of the upper and lower pressing blocks, reducing the residual gas between the capsule and the tire, which is conducive to improving the accuracy of tire positioning.

[0031] 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, which helps to improve the production efficiency of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a vulcanizing machine for producing automobile tires according to the present invention;

[0033] Figure 2 A side view of the rotating frame of the present invention;

[0034] Figure 3 for Figure 2Enlarged view of point A in the middle;

[0035] Figure 4 is a cross-sectional view of the lower mold of the present invention;

[0036] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0037] Figure 6 Schematic diagram of the structure of the lower module and capsule of the present invention;

[0038] Figure 7 It is a partial structural diagram of the lower die base and the lower die motor of the present invention;

[0039] Figure 8 It is a structural schematic diagram of the mold piece of the present invention moving in a direction away from the axis of the lower mold base;

[0040] Figure 9 It is a structural schematic diagram of the mold piece of the present invention moving toward the axis direction of the lower mold base.

[0041] In the figure: 1. Frame; 11. Rotating frame; 12. Rotating motor; 13. Rotating roller; 14. Driving motor; 15. Second scraper; 2. Upper die; 21. Hydraulic cylinder; 3. Lower die; 31. Lower die base; 311. Arc groove; 312. Limiting groove; 32. Lower die base motor; 321. Gear; 33. Die piece; 34. Ring gear; 4. Lifting frame; 41. Lifting cylinder; 42. Operating cylinder; 43. Center rod; 431. Upper rotating plate ; 432, lower rotating plate; 433, return spring 1; 434, pressure plate; 44, connecting piece; 45, bladder; 5, capsule; 51, top plate; 52, bottom plate; 53, bladder body; 6, upper pressure block; 61, upper pressure block telescopic cylinder; 62, exhaust groove; 63, groove; 64, scraper 1; 7, pressure ring; 71, pressure ring telescopic cylinder; 72, slide; 8, lower pressure block; 81, lower pressure block telescopic cylinder; 82, support; 9, tire blank. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figures 1-9 , clearly and completely describe the technical solutions of the embodiments of the present invention.

[0043] Example

[0044] This embodiment provides a vulcanizing machine for automobile tire production, such as Figure 1 As shown, it includes a frame 1, an upper mold 2 and a lower mold 3.

[0045] like Figure 1As shown, the upper mold 2 is located above the frame 1, and the lower mold 3 is located below the frame 1. A hydraulic cylinder 21 is installed on the frame 1 to drive the upper mold 2 to move up and down. After the tire 9 is positioned on the lower mold 3, the hydraulic cylinder 21 drives the upper mold 2 downward to achieve mold closing and vulcanization. After vulcanization is completed, the hydraulic cylinder 21 drives the upper mold 2 upward to complete the mold opening. This is a prior art and will not be described in detail.

[0046] like Figure 1 and Figure 2 As shown, a rotating frame 11 is rotatably mounted on the frame 1. The vulcanization station is located below the upper mold 2 on the rotating frame 11. The end of the rotating frame 11 opposite the vulcanization station is the loading and unloading station. The lower mold 3 is mounted on both the loading and unloading station and the vulcanization station. A rotating motor 12 is provided on the frame 1. The rotating motor 12 rotates forward and reverse to drive the rotating frame 11 to rotate 180° forward or 180° reverse, so that the lower mold 3 on the loading and unloading station and the vulcanization station alternately rotates to below the upper mold 2.

[0047] like Figure 1 and Figure 2 As shown, while the vulcanization station is vulcanizing the tire blank 9, the loading and unloading stations unload the vulcanized tire and load the next tire blank 9, which is beneficial to improving the vulcanization efficiency.

[0048] like Figure 4 As shown, the lower die 3 includes a lower die base 31 rotatably connected to the frame 1 and a lower die base motor 32 driving the lower die base 31 to rotate.

[0049] like Figure 7 and Figure 9 As shown, a plurality of fan-shaped mold pieces 33 are provided at the upper end of the lower mold base 31 , and a slider (not shown) is installed at the lower portion of the mold piece 33 . An arc groove 311 is provided on the lower mold base 31 , and the slider can slide in the arc groove 311 .

[0050] like Figure 7 and Figure 9 As shown, the edge of the lower die base 31 is provided with a gear ring 34, and the output shaft of the lower die base motor 32 is equipped with a gear 321 that meshes with the gear ring 34. 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 between the slider and the arc groove 311, the arc groove 311 rotates with the lower die base 31 while driving the slider to move, thereby driving the die piece 33 to move along the radial direction of the lower die base 31. Figure 8 As shown, when the mold pieces 33 move toward the direction close to the axis of the lower mold base 31 , the distance between two adjacent mold pieces 33 gradually decreases, which is used to support the tire blank 9 .

[0051] like Figure 4 and Figure 5As shown, two lifting cylinders 41 are provided below the rotating frame 11, and the output shafts of the two lifting cylinders 41 are connected to the lifting frame 4, and the lifting frame 4 is installed with a control cylinder 42, and the output shaft of the control cylinder 42 is installed with a center rod 43, the axis of the center rod 43 extends in the up and down directions, and the capsule 5 is installed on the center rod 43.

[0052] like Figure 4 and Figure 5 As shown, a connector 44 is installed below the rotating frame 11. The connector 44 is a hollow structure. A capsule 45 is installed inside the connector 44. The capsule 45 is located inside the lower mold base 31. The operating cylinder 42 and the center rod 43 are located inside the capsule 45.

[0053] like Figure 4 and Figure 5 As shown, the lifting cylinder 41 drives the lifting frame 4 and the operating cylinder 42 to move downward, and the operating cylinder 42 drives the center rod 43 and the capsule 5 to move downward, so that the capsule 5 is located in the capsule tube 45, thereby separating the capsule 5 and the vulcanized tire, facilitating the unloading of the tire.

[0054] like Figure 4 As shown, an upper pressing block 6 and a pressing ring 7 are slidably connected to the frame 1 above the loading and unloading station. An upper pressing block telescopic cylinder 61 and a pressing ring telescopic cylinder 71 are provided on the frame 1 to respectively drive the upper pressing block 6 and the pressing ring 7 to rise and fall.

[0055] like Figure 4 and Figure 5 As shown, a pressing block 8 is provided between the connecting member 44 and the capsule 45 . The pressing block 8 and the connecting member 44 are in sliding connection. A pressing block telescopic cylinder 81 for driving the pressing block 8 to move up and down is provided on the connecting member 44 .

[0056] like Figure 4 and Figure 5 As shown, 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 toward the 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 toward the direction away from the axis of the lower pressing block 8.

[0057] like Figure 7 and Figure 9 As shown, the lower die base motor 32 drives the lower die base 31 to rotate, and the lower die base 31 drives the mold pieces 33 to move in the radial direction close to the axis of the lower die base 31 until two adjacent mold pieces 33 abut against each other, and the tire blank 9 is placed on the mold pieces 33, as shown in FIG. Figure 8 As shown, the lower die base motor 32 drives the lower die base 31 to rotate in the opposite direction, so that the die piece 33 moves in the radial direction away from the axis of the lower die base 31 to make way for the lower pressing block 8 to move upward.

[0058] like Figure 4 and Figure 5As shown, the lower pressing block telescopic cylinder 81 drives the lower pressing block 8 upward, and the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 upward. The upper pressing block 6 moves downward and extends into the tire green 9, and the lower pressing block 8 moves upward and extends into the tire green 9. During the downward movement, the side wall of the upper pressing block 6 drives the upper steel rim of the tire green 9 to move and achieve centering of the upper steel rim; during the upward movement, the side wall of the lower pressing block 8 drives the lower steel rim of the tire green 9 to move and achieve centering of the lower steel rim.

[0059] like Figure 4 and Figure 5 As shown, the pressure ring telescopic cylinder 71 drives the pressure ring 7 downward to squeeze and position the sidewall of the upper end of the tire blank 9, so that the sidewall of the lower end of the tire blank 9 fits with the lower mold 3, which is beneficial to reduce the inclination of the axis of the tire blank 9.

[0060] Among them, such as Figure 5 As shown, the capsule 5 includes a top plate 51 , a bottom plate 52 and a capsule body 53 .

[0061] like Figure 4 and Figure 5 As shown, the central rod 43 extends from bottom to top through the bottom plate 52 and the top plate 51. The bottom plate 52 and the top plate 51 are parallel and perpendicular to the axis of the central rod 43. The bladder 53 is connected between the top plate 51 and the bottom plate 52. When the bladder 5 is inflated, the bladder 53 expands to support the tire green body 9.

[0062] like Figure 5 As shown, the center rod 43 is rotatably connected to an upper rotating plate 431 and a lower rotating plate 432. 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 return spring 1 433 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 return spring 1 433 is sleeved on the center rod 43. The upper end of the center rod 43 is connected to a pressure plate 434, which is located above the upper rotating plate 431.

[0063] like Figure 4 and Figure 6 As shown, 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 correspondingly provided inside the pressing ring 7. The plurality of slide grooves 72 and the plurality of exhaust grooves 62 on the upper pressing block 6 are slidably matched.

[0064] like Figure 4 and Figure 5 As 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 .

[0065] like Figure 5 and Figure 8As shown, a plurality of limiting grooves 312 are correspondingly provided inside the lower die base 31 and on the connecting member 44 , and the plurality of limiting grooves 312 and the plurality of exhaust grooves 62 on the lower pressing block 8 are slidably matched.

[0066] like Figure 5 and Figure 6 As shown, a plurality of support members 82 are hinged on the lower pressing block 8 to support the bottom plate 52. The support members 82 are rod-shaped structures. A second return spring (not shown in the figure) is connected between the support members 82 and the lower pressing block 8. The second return spring is a torsion spring.

[0067] like Figure 4 and Figure 5 As shown, during the process of centering the tire blank 9, the lower pressure block 8 moves upward and drives the lower steel ring to be centered, while the support member 82 abuts and squeezes the bottom plate 52; while the upper pressure block 6 moves downward and drives the upper steel ring to be centered, the pressure plate 434 and the upper rotating plate 431 extend into the groove 63, and the lower end of the groove 63 abuts against the top plate 51 and gradually squeezes the top plate 51, and the return spring 433 is compressed, so that the distance between the bottom plate 52 and the top plate 51 is reduced.

[0068] like Figure 4 and Figure 5 As shown, after the green tire 9 is centered, air is inflated into the bladder 5. After the bladder 53 expands, it first contacts and supports the inner wall of the green tire 9. The air between the bladder 5 and the green tire 9 is gradually discharged through the exhaust grooves 62 of the upper and lower pressing blocks 6 and 8, reducing the amount of air remaining between the bladder 5 and the green tire 9 and improving the positioning accuracy of the green tire 9.

[0069] like Figure 4 and Figure 5 As shown, when the bladder 53 abuts against the inner wall of the tire blank 9, the upper pressure block telescopic cylinder 61 drives the upper pressure block 6 to move upward, and the lower pressure block telescopic cylinder 81 drives the lower pressure block 8 to move downward. As the bladder 5 continues to expand, coupled with the elastic force of the 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 tire blank 9, thereby completing the positioning of the tire blank 9.

[0070] like Figure 2 As shown, a rotating roller 13 is rotatably connected to the portion of the frame 1 located at the loading and unloading station. The frame 1 is also provided with a drive motor 14 for driving the rotating roller 13. The axis of the rotating roller 13 extends in the vertical direction. The side surface of the rotating roller 13 can abut against the tread of the vulcanized tire and drive the tire to rotate.

[0071] like Figure 4 and Figure 6 As shown, the notches of the exhaust grooves 62 of the upper pressing block 6 and the lower pressing block 8 are both provided with scrapers 64 that can clean the inner ring of the tire. Figure 3As shown, a scraper 2 15 capable of cleaning the tread of the tire is provided below the rotating roller 13 on the frame 1.

[0072] like Figure 4 and Figure 5 As shown, after the vulcanization is completed, the operating cylinder 42 drives the center rod 43 and the capsule 5 to move upward, and the capsule 5 drives the tire to move upward synchronously, so that the sidewall of the lower end of the tire does not contact the mold 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 is close to 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 is close to the inner ring of the lower end of the tire. The driving motor 14 drives the rotating roller 13 to rotate, and the rotating roller 13 drives the tire to rotate, and the tire drives the capsule 5 to rotate synchronously, and the capsule 5 drives the upper rotating plate 431 and the lower rotating plate 432 to rotate. While the tire rotates, the scraper 64 cleans the flash that appears on the inner ring of the tire after vulcanization, as shown in FIG. Figure 3 As shown, the scraper 2 15 cleans the flash on the tread, which helps to improve the production efficiency of the tire.

[0073] The implementation principle of a vulcanizing machine for automobile tire production in this embodiment is as follows:

[0074] At the loading and unloading station, the operating cylinder 42 drives the center rod 43 to move upward, and 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, and the lower die base 31 drives the die piece 33 to move in the radial direction close to the axis of the lower die base 31 until the two adjacent die pieces 33 abut. The tire blank 9 is placed on the die piece 33 so that the capsule 5 is located inside the tire blank 9. The lower die base motor 32 drives the lower die base 31 to rotate in the opposite direction, so that the die piece 33 moves in the radial direction away from the axis of the lower die base 31.

[0075] The lower pressure block telescopic cylinder 81 drives the lower pressure block 8 to move upward, and the upper pressure block telescopic cylinder 61 drives the upper pressure block 6 to move upward. The side wall of the upper pressure block 6 drives the upper steel ring of the tire blank 9 to move during the downward movement, and realizes the centering of the upper steel ring; the side wall of the lower pressure block 8 drives the lower steel ring of the tire blank 9 to move during the upward movement, and realizes the centering of the lower steel ring; the pressure ring telescopic cylinder 71 drives the pressure ring 7 to move downward, squeezes and positions the sidewall of the upper end of the tire blank 9.

[0076] When the lower pressing block 8 moves upward and drives the lower steel ring to align, the support member 82 abuts against and squeezes the bottom plate 52; when the upper pressing block 6 moves downward and drives the upper steel ring to align, 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 return spring 433 is compressed to reduce the distance between the bottom plate 52 and the top plate 51.

[0077] After the tire 9 is centered, air is inflated into the bladder 5. After the bladder 53 expands, it first contacts and supports the inner wall of the tire 9. Once the bladder 53 abuts the inner wall of the tire 9, the upper pressing block telescopic cylinder 61 drives the upper pressing block 6 upward, while the lower pressing block telescopic cylinder 81 drives the lower pressing block 8 downward. As the bladder 5 continues to expand, coupled with the elastic force of the return spring 433, the top plate 51 moves upward and the bottom plate 52 moves downward until both plates abut the sidewall of the tire 9, completing the positioning of the tire 9. The air between the bladder 5 and the tire 9 is gradually discharged through the exhaust grooves 62 of the upper and lower pressing blocks 6 and 8, helping to reduce the amount of air remaining between the bladder 5 and the tire 9.

[0078] The rotating motor 12 drives the rotating frame 11 to rotate, so that the tire blank 9 after positioning is transferred to the vulcanization station, and the hydraulic cylinder 21 drives the upper mold 2 to move downward to realize mold closing and vulcanization. After vulcanization is completed, the hydraulic cylinder 21 drives the upper mold 2 to move upward to complete mold opening. The rotating motor 12 drives the rotating frame 11 to rotate in the opposite direction, so that the vulcanized tire is transferred to the loading and unloading station.

[0079] The operating cylinder 42 drives the center rod 43 and bladder 5 upward, which in turn drives the tire upward synchronously, eliminating contact between the tire's lower end and the mold 33 and allowing the tire's tread to abut against the rotating roller 13. The lower pressing block's telescopic cylinder 81 drives the lower pressing block 8 upward, while the upper pressing block's telescopic cylinder 61 drives the upper pressing block 6 downward, bringing the scraper 1 64 at the notch of the exhaust groove 62 on the upper pressing block 6 closer to the inner rim at the upper end of the tire and the scraper 1 64 at the notch of the exhaust groove 62 on the lower pressing block 8 closer to the inner rim at the lower end of the tire. The drive motor 14 drives the rotating roller 13, which in turn drives the tire, which in turn drives the bladder 5 synchronously. Scraper 1 64 cleans the flash that appears on the tire's inner rim after vulcanization, while scraper 2 15 cleans the flash on the tread.

[0080] After the capsule 5 is deflated, the lifting cylinder 41 drives the lifting frame 4 and the operating cylinder 42 to move downward, and the operating cylinder 42 drives the center rod 43 and the capsule 5 to move downward, so that the capsule 5 is located in the bladder tube 45, thereby separating the capsule 5 from the vulcanized tire, facilitating the unloading of the tire.

[0081] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components.

Claims

1. A vulcanizing machine for automobile tire production, comprising a lower mold (3) arranged on a frame (1), a bladder (45) provided in the lower mold (3), a center rod (43) slidably connected in the bladder (45), a bladder (5) mounted on the center rod (43), and the center rod (43) 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), and the pressure ring (7) is located on the outside of the upper pressing block (6) and is in sliding connection with the upper pressing block (6); The capsule (5) includes a top plate (51) and a bottom plate (52) penetrated by a center 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 center 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 the lower pressing block (8), and the top plate (51) can abut against the upper pressing block (6).

2. The vulcanizing press for automobile tire production according to claim 1, 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) for sliding engagement with the exhaust grooves (62) on the upper pressing block (6).

3. The vulcanizing press for automobile tire production according to claim 2, characterized in that: The upper end of the center rod (43) is connected to a pressure plate (434), and the lower end of the upper pressure block (6) is provided with a groove (63). The pressure 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).

4. The vulcanizing press for automobile tire production according to claim 3, 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).

5. The vulcanizing press for automobile tire production according to claim 4, 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 up and down.

6. The vulcanizing press for automobile tire production according to claim 5, characterized in that: A rotating roller (13) capable of contacting the tire is rotatably connected to the frame (1), and the rotating roller (13) is driven by a driving motor (14). A scraper (64) capable of cleaning the inner ring of the tire is provided at the notch of the exhaust groove (62).

7. The vulcanizing press for automobile tire production according to claim 6, characterized in that: The frame (1) is provided with a scraper 2 (15) capable of cleaning the tread of the tire.

8. The vulcanizing press for automobile tire production according to claim 7, 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).

9. The vulcanizing press for automobile tire production according to claim 8, 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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