A tire vulcanization apparatus

Abstract

The present application relates to the technical field of tire vulcanization, and particularly relates to a tire vulcanization device, which comprises supporting legs, a base, a lower mold and an upper mold; the supporting legs are provided with the base, the base is movably provided with the lower mold, and the base is movably provided with the upper mold; the device further comprises a fixed mold, which is fixedly installed on the base and located between the upper mold and the lower mold; the present application solves the problem that in the existing tire vulcanization process, a fixed device is needed to position and tighten the steel cord on both sides of the mold, which results in a large floor area of the tire vulcanization device, a long tire vulcanization time and an increased cost of the tire vulcanization device; the present application realizes that in the tire vulcanization process, the steel cord does not need to be positioned and tightened by an additional fixed device, which reduces the floor area of the tire vulcanization device, the tire vulcanization time and the cost of the tire vulcanization device.

Description

Technical Field

[0001] This invention relates to the field of tire vulcanization technology, and more specifically to a tire vulcanization device. Background Technology

[0002] Tire vulcanizing equipment is a specialized device used for vulcanizing rubber tires (commonly found in construction machinery, agricultural machinery, military vehicles, etc.) during production or repair. Vulcanization is a key process in rubber processing, which involves heating and pressurizing to cross-link rubber molecules, thereby improving their strength, elasticity, and durability.

[0003] In the existing tire vulcanization process, steel cord and rubber sheet are placed in a mold. Fixers on both sides of the mold are needed to pull the steel cord and position and tighten it. The upper and lower molds then vulcanize and plasticize the rubber sheet on the steel cord. This results in a large footprint for the tire vulcanization equipment and a long vulcanization time, which increases the cost of the tire vulcanization equipment.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a tire vulcanization device, which solves the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to solve the problem that in the existing tire vulcanization process, it is necessary to use fixers on both sides of the mold to position and tighten the steel cord, which results in a large footprint of the tire vulcanization equipment and a long vulcanization time, increasing the cost of the tire vulcanization equipment. The invention achieves a tire vulcanization process without the need for additional fixers to position and tighten the steel cord, thereby reducing the footprint of the tire vulcanization equipment and the vulcanization time, and lowering the cost of the tire vulcanization equipment.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0007] A tire vulcanizing device includes: a support leg, a base, a lower mold, and an upper mold; the base is mounted on the support leg, the lower mold is movably mounted on the base, and the upper mold is movably mounted on the base.

[0008] It also includes a fixed mold, which is fixedly installed on the base and located between the upper mold and the lower mold. The fixed mold is used to position and tighten the rubber sheet and the steel wire cord, and the upper mold and the lower mold are used to vulcanize and plasticize the rubber sheet. Then the fixed mold demolds the tire.

[0009] Preferably, the fixed mold includes: a box body, a mold plate, a moving rod, a rotating wheel, a cylinder, a first wedge, a second wedge, and a third wedge; the box body is mounted on a base, the mold plate is mounted on the box body, the moving rod is movably mounted on both sides of the box body, two rotating wheels are mounted on the free ends of the moving rods respectively, the cylinder is installed inside the box body and sleeved on the moving rods, the first wedge is mounted on the end of the moving rod away from the rotating wheel, two second wedges are horizontally mounted inside the box body and the two second wedges cooperate with the first wedge, and a third wedge is horizontally mounted between the two second wedges.

[0010] Preferably, the mold plate includes an upper plate and a lower plate, which are movably installed on the top and bottom of the box body, respectively. Fixed wedges are installed in the middle of the upper plate and the lower plate, and the two fixed wedges cooperate with the third wedge. Multiple tension springs are installed between the upper plate and the lower plate.

[0011] Preferably, a first hydraulic rod is installed on each of the two second wedges, and a first hydraulic cylinder is installed on each of the two first hydraulic rods; a second hydraulic rod is installed on the third wedge, and a second hydraulic cylinder is installed on the second hydraulic rod.

[0012] Preferably, two circular holes are respectively opened on the top of the box body, and a third hydraulic cylinder and a fourth hydraulic cylinder are respectively installed inside the box body, with the third hydraulic cylinder and the fourth hydraulic cylinder located below the two circular holes respectively.

[0013] Preferably, the third hydraulic cylinder is connected to the two first hydraulic cylinders respectively through two first oil pipes, and the fourth hydraulic cylinder is connected to the second hydraulic cylinder through a second oil pipe.

[0014] Preferably, a compression spring is sleeved on the moving rod, the compression spring is located inside the cylinder, and a limit plate is provided on the moving rod, the limit plate being located on one side of the first wedge block.

[0015] Preferably, the bottom of the upper mold is provided with two push rods, the free ends of the two push rods pass through the circular hole and are located inside the third hydraulic cylinder and the fourth hydraulic cylinder, and pistons are provided on the free ends of the two push rods respectively.

[0016] Preferably, the opposing surfaces of the two first wedges are inclined surfaces, the opposing surfaces of the two second wedges are inclined surfaces, and the inclined surfaces of the two first wedges and the inclined surfaces of the two second wedges slide in each other.

[0017] Preferably, the opposing surfaces of the fixed wedges on the upper and lower plates are inclined surfaces, the upper and lower surfaces of the third wedge are inclined surfaces, and the upper and lower inclined surfaces of the third wedge slide in cooperation with the inclined surfaces of the two fixed wedges.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention uses a rotating wheel and a moving rod on a fixed mold. The movement of the upper mold triggers the moving rod to move outward and pull the steel wire curtain, thereby positioning and tightening the steel wire curtain. This allows the upper and lower molds to vulcanize and plasticize the rubber sheet and steel wire curtain without the need for additional fixing devices to position and tighten the steel wire curtain. This reduces the footprint of the tire vulcanizing equipment and the tire vulcanizing time, thus lowering the cost of the tire vulcanizing equipment.

[0020] 2. This invention sets a mold plate in a fixed mold. The movement of the upper mold triggers the mold plate to move outward. After the rubber sheet and steel cord are vulcanized and plasticized, the mold plate moves through an internal tension spring during the resetting process of the upper mold, thereby demolding the tire after vulcanization and plasticization. This reduces the tire vulcanization time and lowers the cost of tire vulcanization equipment.

[0021] 3. This invention sets a first wedge, a second wedge, and a third wedge in a fixed mold. The movement of the upper mold drives the internal hydraulic oil to flow, thereby causing the second wedge to push the first wedge to move, positioning and tightening the steel wire cord. The third wedge pushes the mold plate outward to vulcanize and plasticize the rubber sheet, greatly reducing the cost of tire vulcanization equipment. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a three-dimensional structural diagram of the entire invention.

[0025] Figure 2 This is a three-dimensional structural diagram of the fixed mold of the present invention.

[0026] Figure 3 This is a three-dimensional structural diagram of the internal structure of the fixed mold of the present invention.

[0027] Figure 4 This is a three-dimensional structural diagram of the fixed mold without an upper mold plate of the present invention.

[0028] Figure 5This is a three-dimensional structural diagram of the fixed mold of the present invention without the second and third wedges.

[0029] Figure 6 This is a three-dimensional structural diagram of the interior of the second and third wedges on the fixed mold of the present invention.

[0030] Figure 7 This is a three-dimensional structural diagram of the moving rod, cylinder, compression spring, rotating wheel, and first wedge block of the present invention.

[0031] Figure 8 This is a three-dimensional structural diagram of the second wedge block of the present invention.

[0032] Figure 9 This is a three-dimensional structural diagram of the third wedge block of the present invention.

[0033] Figure 10 This is a cross-sectional view of the push rod, piston, and hydraulic lever of the present invention.

[0034] In the diagram: 1. Support leg; 2. Base; 3. Lower mold; 4. Upper mold; 41. Push rod; 42. Piston; 5. Fixed mold; 51. Box body; 511. Circular hole; 512. Third hydraulic cylinder; 513. Fourth hydraulic cylinder; 52. Mold plate; 521. Fixed wedge; 522. Tension spring; 523. Upper plate; 524. Lower plate; 53. Moving rod; 54. Rotary wheel; 55. Cylinder; 551. Compression spring; 552. Limiting plate; 56. First wedge; 57. Second wedge; 571. First hydraulic rod; 572. First hydraulic cylinder; 573. First oil pipe; 58. Third wedge; 581. Second hydraulic rod; 582. Second hydraulic cylinder; 583. Second oil pipe. Detailed Implementation

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figures 1 to 10 As shown, a tire vulcanizing device includes: a support leg 1, a base 2, a lower mold 3, and an upper mold 4; the base 2 is mounted on the support leg 1, the lower mold 3 is movably mounted on the base 2, and the upper mold 4 is movably mounted on the base 2.

[0037] It also includes a fixed mold 5, which is fixedly installed on the base 2 and located between the upper mold 4 and the lower mold 3. The fixed mold 5 is used to position and tighten the rubber sheet and the steel wire cord, and the upper mold 4 and the lower mold 3 are used to vulcanize and plasticize the rubber sheet. Then the fixed mold 5 demolds the tire.

[0038] Outrigger 1 serves as the supporting structure of the equipment, ensuring the stability of the entire machine. It is typically welded from high-strength steel, and shock-absorbing pads can be installed at the bottom to reduce vibration during operation. Base 2: Fixed to outrigger 1, it serves as the foundation platform for the entire vulcanization system. It is usually made of cast iron or steel plate, possessing high rigidity and resistance to deformation. Lower mold 3: Movable on base 2, it can move up and down under hydraulic drive. It supports the rubber sheet and steel cord and provides downward forming force during vulcanization. Upper mold 4: Also movable on base 2, it cooperates with lower mold 3 to achieve rubber vulcanization through mold closing pressure. Fixed mold 5: Fixed to base 2, located between upper mold 4 and lower mold 3, it is used for precise positioning and tensioning of the rubber sheet and steel cord before vulcanization, and assists in demolding after vulcanization, ensuring the tire smoothly leaves the mold without deformation. It also cooperates in the vulcanization of the tire.

[0039] Operators stack pre-cut rubber sheets and steel wire cords onto the lower mold 3 and the fixed mold 5 according to process requirements, ensuring accurate relative positions of the rubber and steel wire cords to prevent displacement during vulcanization. The lower mold 3 moves upward under the drive of a hydraulic cylinder, while the upper mold 4 moves downward, forming a two-way mold-closing structure and approaching the fixed mold 5. The downward movement of the upper mold 4 triggers the movement of the internal moving rod 53 of the fixed mold 5, positioning and tightening the steel wire cord. A constant tension is applied to the steel wire cord during mold closing to ensure it remains taut during vulcanization, preventing loosening or misalignment. After mold closing, the internal heating system is activated, causing the rubber to vulcanize under high temperature and pressure, tightly bonding with the steel wire cord to form a high-strength tire structure. After vulcanization, the upper mold 4 and lower mold 3 separate, and the upper plate 523 and lower plate 524 on the fixed mold 5 move inward, detaching from the vulcanized tire to prevent product deformation or damage due to sticking. After the operator removes the vulcanized tire, they can rotate or adjust the position of the steel cord to proceed with the next round of vulcanization for the unvulcanized portions, until the entire tire has completed the vulcanization process. The fixed mold 5 ensures the stability of the rubber sheet and steel cord during vulcanization, improving product consistency. This achieves high-precision, high-efficiency tire vulcanization production, suitable for the manufacture of tires for engineering machinery, agricultural machinery, and special vehicles.

[0040] This integrated system, combining hydraulic linkage, mechanical wedge transmission, and elastic energy storage reset, achieves precise positioning and uniform tensioning of the steel cord fabric during tire vulcanization, as well as synchronous opening and closing of the mold. It eliminates the need for additional fixers to position and tighten the steel cord fabric, reducing the footprint of the tire vulcanization equipment and the vulcanization time, thus lowering the cost of the tire vulcanization equipment.

[0041] like Figures 2 to 6As shown, the fixed mold 5 includes: a box body 51, a mold plate 52, a moving rod 53, a rotating wheel 54, a cylinder 55, a first wedge 56, a second wedge 57, and a third wedge 58; the box body 51 is mounted on the base 2, the mold plate 52 is mounted on the box body 51, the moving rod 53 is movably mounted on both sides of the box body 51, two rotating wheels 54 are mounted on the free ends of the moving rods 53 respectively, the cylinder 55 is installed inside the box body 51 and sleeved on the moving rods 53, the first wedge 56 is mounted on the end of the moving rod 53 away from the rotating wheel 54, two second wedges 57 are horizontally mounted inside the box body 51, and the two second wedges 57 cooperate with the first wedge 56, and a third wedge 58 is horizontally mounted between the two second wedges 57.

[0042] The fixed mold 5 is one of the core components of the tire vulcanizing equipment. It is mainly used for precise positioning, tensioning, and assisting in demolding of the steel cord and rubber sheet during the vulcanization process. It also works in conjunction with the upper mold 4 and lower mold 3 for vulcanization. The housing 51, serving as the main frame of the fixed mold 5, is made of high-strength cast iron or welded steel plates to ensure overall rigidity and stability. The housing 51 is fixed to the base 2 by bolts or welding, providing support for the internal moving mechanism. The mold plate 52 consists of an upper plate 523 and a lower plate 524, which are movably installed at the top and bottom of the housing 51, respectively. They can be raised and lowered hydraulically to facilitate demolding after tire vulcanization. The moving rods 53 are symmetrically arranged on both sides of the housing 51 and can reciprocate horizontally. A rotating wheel 54 is installed on the outer side (free end) of the moving rod 53 to contact and tension the steel cord. The rotating wheel 54 is typically made of wear-resistant alloy steel or surface-hardened to minimize friction when in contact with the steel cord and avoid damaging its surface. Cylinder 55: Fixed inside the housing 51, serving as a guide sleeve for the moving rod 53, ensuring the moving rod 53 moves in a straight line and preventing deviation. The cylinder 55 typically contains linear bearings or a graphite lubrication layer to reduce movement resistance. The first wedge 56, second wedge 57, and third wedge 58 constitute a mechanical force transmission mechanism, converting hydraulic driving force into radial movement of the moving rod 53. This enables the tensioning and release of the steel wire curtain and the movement of the upper plate 523 and lower plate 524. No additional fixing devices are needed for positioning and tensioning the steel wire curtain, reducing the footprint of the tire vulcanizing equipment and the tire vulcanizing time, thus lowering the cost of the tire vulcanizing equipment.

[0043] like Figures 3 to 5 As shown, the mold plate 52 includes an upper plate 523 and a lower plate 524. The upper plate 523 and the lower plate 524 are respectively movably installed on the top and bottom of the box body 51. Fixed wedges 521 are respectively installed in the middle of the upper plate 523 and the lower plate 524, and the two fixed wedges 521 cooperate with the third wedge 58. Multiple tension springs 522 are respectively installed between the upper plate 523 and the lower plate 524.

[0044] It should be noted that the fixed wedge 521 installed in the middle of the upper plate 523 and the lower plate 524 is used to cooperate with the third wedge 58. During the movement of the third wedge 58, the upper plate 523 and the lower plate 524 can move outward at the same time, and cooperate with the upper mold 4 and the lower mold 3 to vulcanize and plasticize the tire. The tension spring 522 between the upper plate 523 and the lower plate 524 is used to reset the upper plate 523 and the lower plate 524. When the third wedge 58 is reset, the tension spring 522 will pull the upper plate 523 and the lower plate 524 to reset and demold the tire after vulcanization.

[0045] like Figure 6 As shown, a first hydraulic rod 571 is installed on each of the two second wedge blocks 57, and a first hydraulic cylinder 572 is installed on each of the two first hydraulic rods 571; a second hydraulic rod 581 is installed on the third wedge block 58, and a second hydraulic cylinder 582 is installed on the second hydraulic rod 581.

[0046] The movement of the movable rod 53, as well as the upper plate 523 and lower plate 524, is achieved by hydraulic oil driving the first hydraulic rod 571 and the second hydraulic rod 581, which in turn pushes the two second wedges 57 and the third wedge 58 to move. The second wedges 57 cooperate with the first wedge 56, and the third wedge 58 cooperates with the fixed wedge 521, driving the movable rod 53, the upper plate 523, and the lower plate 524 to move outward. This hydraulic drive system, through precise electromechanical-hydraulic integrated design, achieves accurate dynamic control of the steel cord tension during tire vulcanization, offering significant advantages over traditional mechanical structures, such as fast response and high precision.

[0047] It should be noted that the diameter of the first hydraulic cylinder 572 is smaller than the diameter of the second hydraulic cylinder 582. This is because the upper mold 4 moves downwards with the same displacement distance, while the moving rod 53 moves outwards a much greater distance than the upper plate 523 and the lower plate 524. Therefore, the diameter of the first hydraulic cylinder 572 that pushes the moving rod 53 is smaller than the diameter of the second hydraulic cylinder 582, so that the entire moving rod 53 has a larger stroke distance.

[0048] like Figures 2 to 6 As shown, the top of the housing 51 has two circular holes 511 respectively, and the housing 51 is equipped with a third hydraulic cylinder 512 and a fourth hydraulic cylinder 513 respectively. The third hydraulic cylinder 512 and the fourth hydraulic cylinder 513 are located below the two circular holes 511 respectively.

[0049] The two circular holes 511 at the same top are used to cooperate with the push rod 41 of the upper mold 4. The free end of the push rod 41 is located inside the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513. The movement of the moving rod 53 pushes the hydraulic oil inside the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513 into the first hydraulic cylinder 572 and the second hydraulic cylinder 582, thereby driving the two first hydraulic rods 571 and the second hydraulic rod 581 to move, causing the second wedge block 57 and the third wedge block 58 to move, and triggering the moving rod 53 as well as the upper plate 523 and the lower plate 524 to move.

[0050] A hydraulic system is used as the power source because it has high stability and a large load capacity, which can tighten the steel wire curtain and demold the tire through the upper plate 523 and the lower plate 524.

[0051] like Figure 6 As shown, the third hydraulic cylinder 512 is connected to the two first hydraulic cylinders 572 respectively through two first oil pipes 573, and the fourth hydraulic cylinder 513 is connected to the second hydraulic cylinder 582 through a second oil pipe 583.

[0052] The third hydraulic cylinder 512 is connected through the first oil pipe 573. Since the third hydraulic cylinder 512 is fixed inside the housing 51, the fourth hydraulic cylinder 513 is also fixed inside the housing 51 and needs to be connected to the second hydraulic cylinder 582 through the second oil pipe 583 to ensure the operation of the entire hydraulic system and improve the stability of the entire vulcanization process.

[0053] like Figure 7 As shown, a compression spring 551 is sleeved on the moving rod 53, the compression spring 551 is located inside the cylinder 55, and a limit plate 552 is provided on the moving rod 53, and the limit plate 552 is located on one side of the first wedge block 56.

[0054] It should be noted that during the outward movement of the moving rod 53, the moving rod 53 will drive the limiting plate 552 to move together and compress the compression spring 551, pressing the compression spring 551 into the inside of the cylinder 55. This is to ensure that after the moving rod 53 has finished tightening and vulcanizing the steel wire curtain, the elastic potential energy of the compression spring 551 can be used to make the moving rod 53 return to its original position, thereby ensuring that the operator can rotate the steel wire curtain to vulcanize the unvulcanized parts.

[0055] like Figure 1 , Figure 6 and Figure 10As shown, the bottom of the upper mold 4 is provided with two push rods 41. The free ends of the two push rods 41 pass through the circular hole 511 and are located inside the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513. Pistons 42 are respectively provided on the free ends of the two push rods 41.

[0056] The push rod 41, acting as a trigger rod, is designed on the upper mold 4. The movement of the mold itself drives the moving rod 53 on the fixed mold 5 to move, thereby positioning and tightening the steel wire curtain. This can be accomplished without an additional power source. Meanwhile, since the movement of the trigger moving rod 53 and the movement of the upper plate 523 and lower plate 524 are hydraulically driven, the push rod 41 cooperates with the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513. A piston 42 is provided on the push rod 41 to drive the flow of hydraulic oil inside the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513, thereby providing power transmission for the movement of the moving rod 53 and the mold plate 52.

[0057] like Figure 4 and Figure 8 As shown, the opposite surfaces of the two first wedges 56 are inclined surfaces, and the opposite surfaces of the two second wedges 57 are inclined surfaces, and the inclined surfaces of the two first wedges 56 and the inclined surfaces of the two second wedges 57 slide in each other.

[0058] To ensure more stable power transmission, the inclined surfaces of the first wedge 56 and the second wedge 57 are made to slide and engage with each other. Under the push of the second wedge 57, the first wedge 56 will drive the moving rod 53 to move outward, thereby realizing the transmission of the overall force. At the same time, lubricating oil can be added between the two first wedges 56 and the second wedge 57 to reduce the friction between the first wedges 56 and the second wedges 57 and prevent premature wear of the contacting inclined surfaces caused by mutual friction between the first wedges 56 and the second wedges 57.

[0059] like Figure 4 and Figure 9 As shown, the opposing surfaces of the fixed wedges 521 on the upper plate 523 and the lower plate 524 are inclined surfaces, and the upper and lower surfaces of the third wedge 58 are inclined surfaces. The upper and lower inclined surfaces of the third wedge 58 slide in cooperation with the inclined surfaces of the two fixed wedges 521.

[0060] Similarly, to make the power transmission process more stable, the contact surfaces of the fixed wedge 521 and the third wedge 58 are set as inclined surfaces. The two inclined surfaces slide against each other. Under the push of the third wedge 58, the two fixed wedges 521 will move outward, thereby driving the upper plate 523 and the lower plate 524 to move outward. Together with the upper mold 4 and the lower mold 3, the tire is vulcanized. Subsequently, by moving the upper plate 523 and the lower plate 524 inward, the tire on the mold 5 can be fixed for demolding. At the same time, lubricating oil can be added between the two third wedges 58 and the fixed wedges 521 to reduce the friction between the third wedges 58 and the fixed wedges 521 and prevent premature wear of the contacting inclined surfaces caused by mutual friction between the third wedges 58 and the fixed wedges 521.

[0061] In the working process of this invention: During the tire vulcanization process, the operator places the steel wire cord and rubber sheet on the fixed mold 5 and the lower mold 3 respectively. The upper mold 4 and the lower mold 3 move simultaneously. During the movement of the upper mold 4, the push rod 41 moves downwards. The piston 42 on the push rod 41 moves within the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513, pushing the hydraulic oil inside the third hydraulic cylinder 512. The hydraulic oil then enters the first hydraulic cylinder 572 through the first oil pipe 573, pushing the first... When the hydraulic rod 571 moves, the first hydraulic rod 571 will drive the second wedge 57 to move. The inclined surface of the second wedge 57 will contact the inclined surface of the first wedge 56, thereby pushing the first wedge 56 to move outward. The first wedge 56 will drive the moving rod 53 to move outward. The rotating wheel 54 on the outside of the moving rod 53 will pull the steel wire curtain and position and tighten it. At the same time, the limiting block on the moving rod 53 will move inside the cylinder 55 and squeeze the compression spring 551, so that the compression spring 551 is compressed.

[0062] Simultaneously, the hydraulic oil inside the fourth hydraulic cylinder 513 will enter the second hydraulic cylinder 582 through the second oil pipe 583, and push the second hydraulic rod 581 to move. The second hydraulic rod 581 drives the third wedge block 58 to move forward and contact the fixed wedge block 521, pushing the fixed wedge block 521 away from each other, thereby causing the upper plate 523 and the lower plate 524 to move outward. The tension spring 522 between the upper plate 523 and the lower plate 524 will be stretched, thereby vulcanizing and plasticizing the steel wire curtain and the rubber sheet.

[0063] After the tire vulcanization is complete, as the upper mold 4 and lower mold 3 move and reset, the upper mold 4 will drive the push rod 41 to reset and extract the hydraulic oil inside the third hydraulic cylinder 512 and the fourth hydraulic cylinder 513, causing the second wedge block 57 and the third wedge block 58 to reset. At the same time, the moving rod 53 will be driven to reset due to the elastic potential energy of the compression spring 551, and the taut steel cord will loosen. The upper plate 523 and the lower plate 524 will be reset due to the elastic potential energy of the tension spring 522, and will be driven to detach from the tire after vulcanization and plasticization, thus completing the demolding. Then the operator rotates the steel cord and vulcanizes the unvulcanized part, thus completing the vulcanization and plasticization of the entire tire. No additional fixing device is needed to position and tighten the steel cord, which reduces the footprint of the tire vulcanization equipment and the tire vulcanization time, and reduces the cost of the tire vulcanization equipment.

[0064] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tire vulcanizing apparatus, comprising: The lower mold (3) and the upper mold (4) are characterized in that the fixed mold (5) is further included, and the fixed mold (5) is located between the upper mold (4) and the lower mold (3). The fixed mold (5) is used to position and tighten the rubber sheet and the steel wire curtain, and the upper mold (4) and the lower mold (3) are used to vulcanize and plasticize the rubber sheet. Then the fixed mold (5) demolds the tire. The fixed mold (5) includes: a box body (51), a mold plate (52), a moving rod (53), a rotating wheel (54), a cylinder (55), a first wedge (56), a second wedge (57), and a third wedge (58); the mold plate (52) is installed on the box body (51), the moving rod (53) is movably installed on both sides of the box body (51), the free ends of the moving rod (53) are respectively equipped with two rotating wheels (54), the cylinder (55) is installed inside the box body (51) and sleeved on the moving rod (53), the end of the moving rod (53) away from the rotating wheel (54) is equipped with a first wedge (56), the box body (51) is horizontally equipped with two second wedges (57), and the two second wedges (57) cooperate with the first wedge (56), and the third wedge (58) is horizontally installed between the two second wedges (57); The mold plate (52) includes an upper plate (523) and a lower plate (524). The upper plate (523) and the lower plate (524) are respectively movably installed on the top and bottom of the box body (51). Fixed wedges (521) are respectively installed in the middle of the upper plate (523) and the lower plate (524), and the two fixed wedges (521) cooperate with the third wedge (58). Two second wedges (57) are respectively equipped with first hydraulic rods (571), and two first hydraulic rods (571) are respectively equipped with first hydraulic cylinders (572); a third wedge (58) is equipped with a second hydraulic rod (581), and a second hydraulic cylinder (582) is equipped with the second hydraulic rod (581). The top of the box (51) has two round holes (511), and a third hydraulic cylinder (512) and a fourth hydraulic cylinder (513) are installed inside the box (51). The third hydraulic cylinder (512) and the fourth hydraulic cylinder (513) are located below the two round holes (511). The third hydraulic cylinder (512) is connected to the two first hydraulic cylinders (572) respectively through two first oil pipes (573), and the fourth hydraulic cylinder (513) is connected to the second hydraulic cylinder (582) through a second oil pipe (583); The bottom of the upper mold (4) is provided with two push rods (41), the free ends of the two push rods (41) pass through the round hole (511) and are located inside the third hydraulic cylinder (512) and the fourth hydraulic cylinder (513), and pistons (42) are provided on the free ends of the two push rods (41).

2. The tire vulcanizing equipment according to claim 1, characterized in that: The fixed mold (5) is provided with a base (2), the bottom of the base (2) is provided with multiple support legs (1), and the base (2) is movably installed with a lower mold (3) and an upper mold (4); the box (51) is installed on the base (2), and multiple tension springs (522) are installed between the upper plate (523) and the lower plate (524).

3. The tire vulcanizing equipment according to claim 1, characterized in that: A compression spring (551) is sleeved on the moving rod (53), the compression spring (551) is located inside the cylinder (55), and a limiting plate (552) is provided on the moving rod (53), and the limiting plate (552) is located on one side of the first wedge (56).

4. The tire vulcanizing equipment according to claim 1, characterized in that: The opposing surfaces of the two first wedges (56) are inclined surfaces, and the opposing surfaces of the two second wedges (57) are inclined surfaces, and the inclined surfaces of the two first wedges (56) and the inclined surfaces of the two second wedges (57) slide against each other.

5. The tire vulcanizing equipment according to claim 1, characterized in that: The opposing surfaces of the fixed wedges (521) of the upper plate (523) and the lower plate (524) are inclined surfaces, and the upper and lower surfaces of the third wedge (58) are inclined surfaces. The upper and lower inclined surfaces of the third wedge (58) slide and cooperate with the inclined surfaces of the two fixed wedges (521).

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