Center mechanism of tire vulcanizer

Abstract

The present invention discloses a central mechanism of a tire vulcanizer, which relates to the technical field of tire vulcanization. It includes a bladder, an upper chuck and a lower chuck for clamping the bladder. The bottom of the lower chuck is connected to a cylinder body, and the central rod of the cylinder body passes through the center of the bladder and is connected to the upper chuck. A first channel communicating with the inner cavity of the vulcanization bladder is opened on the upper chuck, and a second channel communicating with the inner cavity of the vulcanization bladder is opened on the chassis of the cylinder body; one of the first channel and the second channel serves as the vulcanization medium inlet, and the other serves as the vulcanization medium outlet. The present invention adopts the medium circulation mode of entering from the upper part and exiting from the lower part or entering from the lower part and exiting from the upper part, expands the inner circulation area of the bladder, effectively discharges the gas in the bladder, ensures that there is no air in the bladder and the temperature of the vulcanization medium is more uniform and stable, and further avoids prolonging the overall use time of the vulcanization medium due to compensating for the positions with poor heat transfer effect, thereby reducing energy waste and improving vulcanization efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tire vulcanization, and particularly to the central mechanism of a tire vulcanizer. Background Art

[0002] At present, the central mechanism of a tire vulcanizer has fan-shaped through holes on both sides of the periphery of the lower end of the central rod. One side serves as the inlet of the vulcanization medium, and the other side serves as the outlet of the vulcanization medium. After the vulcanization medium enters the inside of the bladder, it is easy to cause the gas in some areas of the cavity to not be completely discharged, resulting in slow heat transfer efficiency in this area. In order to ensure sufficient vulcanization of the tire, the time needs to be extended.

[0003] Furthermore, when the vulcanization medium enters the bladder and stabilizes at the standard pressure, at this time, the pressure inside the bladder is close to the pressure of the outer main pipe. At this time, the circulating medium inside the bladder circulates in a small area, and the circulation route cannot pass through the inner cavity of the bladder. The inner cavity of the bladder only gradually provides temperature through heat transfer, resulting in a large internal temperature difference. In order to ensure sufficient vulcanization of the tire, the time also needs to be extended.

[0004] The above two situations will both reduce the vulcanization efficiency, cause energy waste, and result in different overall vulcanization degrees of the tire, affecting the product quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a central mechanism of a tire vulcanizer, aiming to solve the technical problem of low vulcanization efficiency of the existing tire vulcanizer.

[0006] To solve the above technical problem, the technical solution of the present invention is:

[0007] The central mechanism of a tire vulcanizer includes a bladder, an upper chuck and a lower chuck for clamping the bladder. The bottom of the lower chuck is connected to a cylinder body. The central rod of the cylinder body passes through the center of the bladder and is connected to the upper chuck. A first channel communicating with the inner cavity of the vulcanization bladder is opened on the upper chuck, and a second channel communicating with the inner cavity of the vulcanization bladder is opened on the bottom plate of the cylinder body; one of the first channel and the second channel serves as the inlet of the vulcanization medium, and the other serves as the outlet of the vulcanization medium.

[0008] Wherein, the inlet of the vulcanization medium is connected to a liquid inlet pipe, and the liquid outlet of the liquid inlet pipe faces the upper cavity or the lower cavity of the bladder.

[0009] Wherein, a plurality of first channels and second channels are uniformly arranged around the central rod.

[0010] Wherein, the plurality of first channels and second channels are vertically offset.

[0011] Wherein, the first channel is the inlet of the vulcanization medium, the second channel is the outlet of the vulcanization medium, an annular pipe is sleeved inside the inner cavity of the bladder, through holes are provided on the outer ring, top and bottom of the annular pipe, and a hose is connected between the inner cavity of the annular pipe and the inlet of the vulcanization medium.

[0012] Among them, a fastening sleeve for fastening on the central rod is provided on the inner ring side of the annular pipe, and a connecting rod is fixedly connected between the annular pipe and the fastening sleeve.

[0013] Among them, a third channel for the sulfurization medium to enter and exit is provided on the column section of the central rod located in the inner cavity of the vulcanization bladder.

[0014] Among them, the first channel is the sulfurization medium inlet, the second channel is the sulfurization medium outlet, the liquid inlet pipe includes a pipe joint and an extension pipe, the extension pipe includes a vertically formed vertical pipe and an inclined pipe integrally formed, the vertical pipe is rotatably and sealingly connected in the pipe joint, and a torsion spring for driving the vertical pipe to rotate is installed on the pipe joint; a spur gear is coaxially and fixedly connected to the vertical pipe, the central rod includes an upper column body and a lower column body that are coaxially rotatably connected, the upper column body is rotatably and sealingly connected to the upper chuck, a turntable is coaxially fixedly connected to the upper column body, and external tooth segments are arranged at intervals on the outer ring of the turntable; a driving mechanism for driving the upper column body to rotate is further included.

[0015] Among them, the driving mechanism includes a motor, a special-shaped hole is provided at the top end of the upper column body, a slider is slidably connected in the special-shaped hole, and the driving shaft of the motor is detachably connected to the slider.

[0016] Among them, an impeller is fixedly connected to the bottom of the turntable.

[0017] After adopting the above technical solution, the beneficial effects of the present invention are:

[0018] 1. By adopting the medium circulation mode of entering from the top and exiting from the bottom or entering from the bottom and exiting from the top, the internal circulation area of the bladder is expanded, the gas in the bladder is effectively discharged, ensuring that there is no air stagnation in the bladder and the temperature of the sulfurization medium is more uniform and stable. Furthermore, it avoids extending the overall use time of the sulfurization medium to make up for the positions with poor heat transfer effect, thereby reducing energy waste and improving the vulcanization efficiency.

[0019] 2. The annular pipe is directly used to uniformly introduce the incoming sulfurization medium into the vulcanization cavity, making the distribution of the sulfurization medium more uniform and the tire heating more efficient and stable.

[0020] 3. Through the periodic meshing of the gear and the external tooth segments and the driving of the torsion spring for resetting, the reciprocating swing function of the extension pipe is realized, making the distribution of the sulfurization medium more uniform. The vulcanization efficiency is improved. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the first embodiment of the central mechanism of the tire vulcanizer of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the second embodiment of the central mechanism of the tire vulcanizer of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the third embodiment of the central mechanism of the tire vulcanizer of the present invention;

[0024] Figure 4 This is a schematic structural diagram of the fourth embodiment of the central mechanism of the tire vulcanizer of the present invention;

[0025] Figure 5 is Figure 4 the enlarged view of part A in

[0026] In the figure, there are capsule 1, vulcanization cavity 10, annular pipe 11, through hole 110, connecting rod 12, fastening sleeve 13, hose 14, upper chuck 2, lower chuck 3, cylinder block 4, central rod 40, upper cylinder body 400, lower cylinder body 401, turntable 402, external tooth section 403, slider 404, impeller 405, vulcanization medium inlet 5, vulcanization medium outlet 6, liquid inlet pipe 7, pipe joint 70, vertical pipe 71, inclined pipe 72, torsion spring 73, and gear 74. Specific embodiments

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] All orientations mentioned in this specification are based on the orientation when the central mechanism of the tire vulcanizer of the present invention is working properly. It does not limit the orientation during its storage and transportation, but only represents the relative positional relationship, not the absolute positional relationship.

[0029] Embodiment 1

[0030] As Figure 1 shown, the central mechanism of the tire vulcanizer includes a capsule 1, an upper chuck 2, a lower chuck 3, and a cylinder block 4. The cylinder block 4 is preferably an oil cylinder or a pneumatic cylinder. The lower chuck 3 is fixed on the cylinder block 4. The central rod 40 of the cylinder block 4 passes through the middle of the capsule 1 and is fixedly connected to the upper chuck 2. The lower chuck 3 clamps at the lower opening in the middle of the capsule 1, and the upper chuck 2 clamps at the upper opening in the middle of the sulfur capsule 1. The capsule 1 is driven to expand and contract by the cylinder block 4. A vulcanization cavity 10 is formed between the capsule 1, the upper chuck 2, and the lower chuck 3. A first channel communicating with the vulcanization cavity 10 is opened on the upper chuck 2, and a second channel communicating with the vulcanization cavity 10 is opened on the bottom plate of the cylinder block 4; the first channel is the vulcanization medium inlet 5, and the second channel is the vulcanization medium outlet 6.

[0031] The vulcanization medium (superheated water or steam) is supplied into the vulcanization cavity 10 through the vulcanization medium inlet 5 and discharged through the vulcanization medium outlet 6. During the circulation of the vulcanization medium, the tire is heated through the capsule 1 to realize tire vulcanization.

[0032] The medium circulation method of flowing in from the top and out from the bottom can effectively expand the size of the internal circulation area in the capsule 1, discharge the gas in the capsule 1, quickly and effectively ensure that there is no air in the capsule 1 and the temperature of the vulcanization medium is more uniform and stable, and further avoid extending the use time of the vulcanization medium as a whole to make up for the position with poor heat transfer effect, thereby reducing energy waste and improving vulcanization efficiency.

[0033] Further, the vulcanization medium inlet 5 is connected to the liquid inlet pipe 7. The liquid inlet pipe 7 is a bent pipe. The liquid inlet of the liquid inlet pipe 7 is connected to the vulcanization medium inlet 5, and the liquid outlet of the liquid inlet pipe 7 faces the upper cavity of the capsule 1. This allows the vulcanization medium to first enter the annular cavity of the capsule 1 and then circulate to the vulcanization medium outlet 6, further increasing the size of the circulation area inside the capsule 1.

[0034] Preferably, a plurality of first channels and second channels are uniformly arranged around the central rod 40. This makes the circulation of the vulcanization medium more uniform, and then makes the heat exchange of the capsule 1 faster and more stable.

[0035] Further, a plurality of first channels and second channels are vertically offset, making the circulation path of the vulcanization medium longer and improving the utilization rate of thermal energy.

[0036] Embodiment 2

[0037] The difference between this embodiment and Embodiment 1 is that, as Figure 2 shown, the first channel is the vulcanization medium outlet 6, and the second channel is the vulcanization medium inlet. The inner port of the first channel is a fan-shaped hole, and the inner port of the second channel is a fan-shaped hole or a multi-shaped elbow is fixedly connected by using a high-pressure pair of wires or welding. The vulcanization medium is circulated in the vulcanization cavity 10 in a bottom-in and top-out manner, effectively expanding the circulation area of the vulcanization medium.

[0038] Embodiment 3

[0039] The difference between this embodiment and Embodiment 1 is that, as Figure 3 shown, a matching annular pipe 11 is arranged inside the capsule 1. Through holes 110 are provided on the outer ring, top, and bottom of the annular pipe 11, and the orifices of the through holes 110 face the annular cavity. A port is provided on the annular pipe 11, and one end of a hose 14 is inserted into the port, and the other end of the hose 14 is inserted into the vulcanization medium inlet 5.

[0040] During use, the vulcanization medium enters the annular pipe 11 through the hose 14 and then is discharged from each through hole 110, making the distribution of the vulcanization medium more uniform and the tire heated more efficiently and stably.

[0041] Preferably, in this embodiment, a fastening sleeve 13 is provided on the inner ring of the annular pipe 11. The fastening sleeve 13 is sleeved on the central rod 40 and locked by a setscrew. A connecting rod 12 is fixedly connected between the annular pipe 11 and the fastening sleeve 13. The connecting rod 12 communicates with the annular cavity, and the hose 14 is directly connected to the connecting rod 12. In other embodiments, the annular pipe 11 can also be connected to the upper chuck 2 or the lower chuck 3 by using fasteners.

[0042] When the capsule 1 is disassembled and assembled, the annular pipe 11 is disassembled and assembled synchronously. After the upper chuck 2 is disassembled, the hose 14 is removed; the setscrew is loosened to disassemble the fastening sleeve 13, realizing the integral disassembly and assembly of the capsule 1 and the annular pipe 11.

[0043] Further, a third channel for the entry and exit of the vulcanization medium is provided on the column section of the central rod 40 located inside the vulcanization bladder cavity. The outer port of the third channel is connected to a vulcanization medium supply source or a recovery source. This enables the entry and exit of the vulcanization medium in multiple directions, improving the operation efficiency.

[0044] Embodiment 4

[0045] The difference between this embodiment and Embodiment 1 is that, as Figure 4 and Figure 5 collectively show, the liquid inlet pipe 7 includes a pipe joint 70 and an extension pipe. The pipe joint 70 is inserted into the vulcanization medium inlet 5. The extension pipe includes a vertically arranged pipe 71 and an inclined pipe 72 integrally formed. The vertically arranged pipe 71 is rotationally connected inside the pipe joint 70 through a sealing ring. The pipe joint 70 is provided with a torsion spring 73. The torsion spring 73 is sleeved on the vertically arranged pipe 71, and the two end rods of the torsion spring 73 are respectively clamped on the inner wall of the pipe joint 70 and the outer wall of the vertically arranged pipe 71. A gear 74 is coaxially and fixedly connected to the vertically arranged pipe 71. The central rod 40 includes an upper cylinder 400 and a lower cylinder 401 that are coaxially and rotatably connected. The upper cylinder 400 is in dynamic sealing connection with the upper chuck 2, so that the upper cylinder 400 and the lower cylinder 401 are axially fixed and can rotate relative to each other. A turntable 402 is coaxially and fixedly connected to the upper cylinder 400. Outer tooth segments 403 are arranged at intervals on the outer ring of the turntable 402. The gear 74 meshes with the outer tooth segments 403.

[0046] It further includes a driving mechanism for driving the upper cylinder 400 to rotate. The driving mechanism is preferably a motor. The motor is fixed on the frame of the tire vulcanizer. The top of the upper cylinder 400 is provided with a special-shaped hole. A slider 404 is slidably connected inside the special-shaped hole. The motor shaft of the motor is fixedly connected to the slider 404. When the motor drives the slider to rotate, the upper cylinder 400 can be driven to rotate synchronously. When the cylinder 4 drives the central rod 40 to expand and contract, the slider 404 slides synchronously inside the special-shaped hole, avoiding movement interference.

[0047] During use, the motor drives the upper cylinder 400 to rotate. When the gear 74 meshes with the outer tooth segments 403, the gear rotates synchronously, realizing the swinging of the extension pipe. When the gear 74 disengages from the outer tooth segments 403, the torsion spring 73 drives the extension pipe to swing back to its original position, thereby realizing the periodic reciprocating swing of the extension pipe, making the distribution of the vulcanization medium more uniform and improving the vulcanization efficiency.

[0048] Further, an impeller 405 is fixedly connected to the bottom of the turntable 402. The impeller includes a plurality of blades arranged circumferentially. The continuous stirring of the impeller 405 further improves the homogenization effect of the vulcanization medium and improves the vulcanization efficiency.

[0049] Certainly, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. Center mechanism of a tire vulcanizer, comprising a bladder, an upper chuck and a lower chuck for clamping the bladder, the bottom of the lower chuck is connected to a cylinder body, the central rod of the cylinder body passes through the center of the bladder and is connected to the upper chuck, characterized in that, A first channel communicating with the inner cavity of the vulcanization bladder is formed on the upper chuck, and a second channel communicating with the inner cavity of the vulcanization bladder is formed on the cylinder chassis; one of the first channel and the second channel serves as the vulcanization medium inlet, and the other serves as the vulcanization medium outlet; A third channel for the inlet and outlet of the vulcanization medium is provided on the column section of the central rod located in the inner cavity of the vulcanization bladder; The first channel is the vulcanization medium inlet, the second channel is the vulcanization medium outlet, the vulcanization medium inlet is connected to a liquid inlet pipe, the liquid outlet of the liquid inlet pipe faces the upper cavity or the lower cavity of the capsule, the liquid inlet pipe includes a pipe joint and an extension pipe, the extension pipe includes a vertically arranged pipe and an inclined pipe integrally formed, the vertically arranged pipe is rotatably and sealingly connected in the pipe joint, and a torsion spring for driving the vertically arranged pipe to rotate is installed on the pipe joint; a spur gear is coaxially fixed on the vertically arranged pipe, the central rod includes an upper cylinder body and a lower cylinder body rotatably connected coaxially, the upper cylinder body is rotatably and sealingly connected to the upper chuck, a turntable is coaxially fixed on the upper cylinder body, and external tooth segments are arranged at intervals on the outer ring of the turntable; It further includes a driving mechanism for driving the upper cylinder body to rotate.

2. The central mechanism of the tire vulcanizing machine according to claim 1, characterized in that, A plurality of the first channels and the second channels are arranged uniformly around the central rod.

3. The center mechanism of the tire vulcanizer according to claim 2, characterized in that, The plurality of first channels and the second channels are arranged vertically in a staggered manner.

4. The central mechanism of the tire vulcanizer according to claim 1, characterized in that, The first channel is the vulcanization medium inlet, the second channel is the vulcanization medium outlet, an annular pipe is sleeved in the inner cavity of the capsule, through holes are provided on the outer ring, top and bottom of the annular pipe, and a hose is connected between the inner cavity of the annular pipe and the vulcanization medium inlet.

5. The center mechanism of the tire vulcanizer according to claim 4, characterized in that, A fastening sleeve for fastening on the central rod is provided on the inner ring of the annular pipe, and a connecting rod is fixedly connected between the annular pipe and the fastening sleeve.

6. The center mechanism of the tire vulcanizer according to claim 1, characterized in that, The driving mechanism includes a motor, a special-shaped hole is provided at the top end of the upper cylinder body, a slider is slidably connected in the special-shaped hole, and the driving shaft of the motor is detachably connected to the slider.

7. The central mechanism of the tire vulcanizer according to claim 1, characterized in that, An impeller is fixedly connected to the bottom of the turntable.

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