Central mechanism for tire vulcanizing machine

Abstract

The utility model discloses a central mechanism for a tire vulcanizer, which comprises a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with a central rod, the top end of the central rod is provided with a top pipe, the top end of the top pipe is provided with a gland, the outside of the central rod is provided with a chuck, and the inside of the top pipe is provided with a first piston cylinder. A second piston cylinder located in the center rod is arranged at the bottom end of the top pipe, a first piston is arranged in the first piston cylinder, and a second piston is arranged in the second piston cylinder; according to the center mechanism, the situation that the reset capacity of a spring is poor after the spring is used for resetting for a long time is avoided, the use stability of the center mechanism is improved, it can be guaranteed that the temperature sensor can be normally adjusted up and down, the temperature sensor can monitor the temperature of different heights in the green tire during vulcanization in the process, and the service life of the green tire is prolonged. Therefore, the temperature during vulcanization can be better observed and controlled, and the phenomenon of vulcanization reaction deviation caused by uneven temperature is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tire vulcanizers, in particular to a central mechanism for a tire vulcanizer. Background Art

[0002] The tire vulcanizer is a device that carries the tire flexible mold and drives the flexible mold to open and close. Usually, the central mechanism of the vulcanizer is used to drive the lifting of the upper and lower rings, and the flexible mold operating device is used to drive the opening and closing of the flexible mold.

[0003] According to Chinese patent application number CN202321137528.4, a tire vulcanizer central mechanism is disclosed, comprising a hydraulic cylinder, a piston rod of the hydraulic cylinder fixedly connected to a central rod, a top tube mounted on the top of the central rod, and a gland fixedly connected to the top of the top tube; two first chutes are symmetrically provided on the outside of the top tube, a piston cylinder is connected to the bottom of the top tube, and a movable rod is slidably mounted inside the piston cylinder; when the tire vulcanizer central mechanism provided by the utility model is used, gas is input into a hose through an external air pump device, and the gas enters the interior of the piston cylinder through the hose. The air pressure causes the movable rod to push the connecting rod and the temperature sensor to move in the first and second chutes, thereby changing the position of the temperature sensor. In this process, the temperature at different heights inside the tire can be monitored during vulcanization, thereby better observing and controlling the temperature during vulcanization, thereby reducing the phenomenon of deviation in the vulcanization reaction caused by uneven temperature. However, the movable rod is spring-reset, which is prone to poor spring reset effect, thus affecting the stability of the central mechanism and thus affecting the temperature sensor's monitoring of the green tire temperature during vulcanization. Utility Model Content

[0004] In order to solve the defects of the prior art, the utility model provides a center mechanism for a tire vulcanizer.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a central mechanism for a tire vulcanizer, comprising a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected to a center rod, a top tube is provided at the top of the center rod, a pressure cover is provided at the top of the top tube, a chuck is provided on the outside of the center rod, a first piston cylinder is provided inside the top tube, a second piston cylinder is provided at the bottom end of the top tube is provided inside the center rod, a first piston is provided inside the first piston cylinder, a second piston is provided inside the second piston cylinder, a piston rod extending out of the first piston cylinder is provided at the bottom end of the first piston cylinder, the bottom end of the piston rod extends into the interior of the second piston cylinder and is connected to the second piston, the upper cavity of the first piston cylinder is communicated with the first air inlet pipe, the lower cavity of the second piston cylinder is communicated with the second air inlet pipe, a U-shaped bracket is provided at the middle part of the piston rod, temperature sensors are provided at both end ends of the bracket, a guide sliding hole matching the temperature sensor is provided on the top tube, and air vents are provided at the bottom end of the first piston cylinder and the top end of the second piston cylinder.

[0007] As a preferred technical solution of the present invention, a first solenoid valve is installed on each of the first air intake pipe and the second air intake pipe, and the first air intake pipe and the second air intake pipe are connected to an air intake manifold.

[0008] As a preferred technical solution of the present invention, a first electromagnetic pressure relief valve is provided at the upper end of the first piston cylinder, and a second electromagnetic pressure relief valve is provided at the bottom end of the second piston cylinder.

[0009] As a preferred technical solution of the present invention, both end portions of the piston rod are connected to the first piston and the second piston respectively.

[0010] As a preferred technical solution of the present invention, the connecting member includes a tapered platform provided at both ends of the piston rod, and one side of the first piston and the second piston are both provided with a tapered groove matching the tapered platform.

[0011] As a preferred technical solution of the present invention, the first piston and the second piston are fixedly connected to the conical platform via bolts.

[0012] The beneficial effects of the utility model are:

[0013] When the central mechanism of the tire vulcanizer is in use, air is supplied to the first air inlet pipe or the second air inlet pipe through an external air pump device. When air is supplied to the first air inlet pipe, the first piston inside the first piston cylinder moves downward, and the piston rod moves downward, so that the temperature sensor connected to the piston rod via the bracket can move downward; when air is supplied to the second air inlet pipe, the second piston inside the second piston cylinder moves upward, and the piston rod moves upward, so that the temperature sensor connected to the piston rod via the bracket can move upward; this avoids the situation where the spring's reset ability is poor after long-term use due to the use of a spring for reset, improves the stability of the central mechanism, and ensures that the temperature sensor can be adjusted up and down normally. During this process, the temperature sensor can monitor the temperature at different heights inside the green tire during vulcanization, so as to better observe and control the temperature during vulcanization, thereby reducing the phenomenon of deviation in the vulcanization reaction due to uneven temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural diagram of a central mechanism for a tire vulcanizer of the present invention;

[0016] Figure 2 The utility model is a cross-sectional view of a central mechanism for a tire vulcanizer.

[0017] In the figure: 1. Hydraulic cylinder; 2. Center rod; 3. Push pipe; 4. Pressure cover; 5. Chuck; 6. First piston cylinder; 7. Second piston cylinder; 8. First piston; 9. Second piston; 10. Piston rod; 11. First intake pipe; 12. Second intake pipe; 13. Bracket; 14. Temperature sensor; 15. Guide slide hole; 16. First solenoid valve; 17. Intake manifold; 18. First solenoid pressure relief valve; 19. Second solenoid pressure relief valve; 20. Connector; 21. Conical platform; 22. Conical groove; 23. Bolt. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0019] Example: Figure 1 and Figure 2As shown, the utility model is a central mechanism for a tire vulcanizer, comprising a hydraulic cylinder 1, a piston rod of the hydraulic cylinder 1 is fixedly connected to a center rod 2, a top tube 3 is provided at the top of the center rod 2, a pressure cover 4 is provided at the top of the top tube 3, a chuck 5 is provided on the outside of the center rod 2, a first piston cylinder 6 is provided inside the top tube 3, a second piston cylinder 7 located inside the center rod 2 is provided at the bottom end of the top tube 3, a first piston 8 is provided inside the first piston cylinder 6, a second piston 9 is provided inside the second piston cylinder 7, and a first piston 8 is provided at the bottom end of the first piston 8. The piston rod 10 extends out of the first piston cylinder 6, and the bottom end of the piston rod 10 extends into the interior of the second piston cylinder 7 and is connected to the second piston 9. The upper cavity of the first piston cylinder 6 is connected to the first air inlet pipe 11, and the lower cavity of the second piston cylinder 7 is connected to the second air inlet pipe 12. A U-shaped bracket 13 is provided in the middle of the piston rod 10, and temperature sensors 14 are provided at both ends of the bracket 13. A guide sliding hole 15 matching the temperature sensor 14 is opened on the top pipe 3. The bottom end of the first piston cylinder 6 and the top end of the second piston cylinder 7 are It is provided with an air vent for ventilation. When in use, air is supplied to the first air intake pipe 11 or the second air intake pipe 12 through an external air pump device. When air is supplied to the first air intake pipe 11, the first piston 8 inside the first piston cylinder 6 moves downward, and the piston rod 10 moves downward, so that the temperature sensor 14 connected to the piston rod 10 via the bracket 13 can be moved downward; when air is supplied to the second air intake pipe 12, the second piston 9 inside the second piston cylinder 7 moves upward, and the piston rod 10 moves upward, so that the temperature sensor 14 connected to the piston rod 10 via the bracket 13 can be moved upward; this avoids the situation where the spring's reset ability is poor after long-term use due to the use of a spring for reset, improves the stability of the use of the central mechanism, and ensures that the temperature sensor 14 can be adjusted up and down normally. During this process, the temperature sensor 14 can monitor the temperature at different heights inside the green tire during vulcanization, so as to better observe and control the temperature during vulcanization, thereby reducing the phenomenon of deviation in the vulcanization reaction due to uneven temperature.

[0020] The first solenoid valve 16 is installed on each of the first air intake pipe 11 and the second air intake pipe 12. The first air intake pipe 11 and the second air intake pipe 12 are connected to an air intake manifold 17, and the air intake manifold 17 is connected to an external air pump device.

[0021] The upper end of the first piston cylinder 6 is provided with a first electromagnetic pressure relief valve 18 , and the bottom end of the second piston cylinder 7 is provided with a second electromagnetic pressure relief valve 19 , which can be used for pressure relief.

[0022] Among them, the two end portions of the piston rod 10 are respectively connected to the first piston 8 and the second piston 9 with connecting parts 20, and the connecting part 20 includes a conical platform 21 provided at the two end portions of the piston rod 10, and one side of the first piston 8 and the second piston 9 is provided with a conical groove 22 matching the conical platform 21, and the first piston 8 and the second piston 9 are fixedly connected to the conical platform 21 by bolts 23.

[0023] When working, the central mechanism of this tire vulcanizer supplies air to the first air inlet pipe 11 or the second air inlet pipe 12 through an external air pump device. When air is supplied to the first air inlet pipe 11, the first piston 8 inside the first piston cylinder 6 moves downward, and the piston rod 10 moves downward, so that the temperature sensor 14 connected to the piston rod 10 via the bracket 13 can move downward; when air is supplied to the second air inlet pipe 12, the second piston 9 inside the second piston cylinder 7 moves upward, and the piston rod 10 moves upward, so that the temperature sensor 14 connected to the piston rod 10 via the bracket 13 can move upward; this avoids the situation where the spring's reset ability is poor after long-term use due to the use of a spring for reset, improves the stability of the central mechanism, and ensures that the temperature sensor 14 can be adjusted up and down normally. During this process, the temperature sensor 14 can monitor the temperature at different heights inside the green tire during vulcanization, so as to better observe and control the temperature during vulcanization, thereby reducing the phenomenon of deviation in the vulcanization reaction due to uneven temperature.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A central mechanism for a tire vulcanizer, comprising a hydraulic cylinder (1), wherein the piston rod of the hydraulic cylinder (1) is fixedly connected to a central rod (2), a top end of the central rod (2) is provided with a jacking tube (3), a top end of the jacking tube (3) is provided with a gland (4), and a chuck (5) is provided on the outside of the central rod (2), characterized in that: A first piston cylinder (6) is provided inside the top tube (3), a second piston cylinder (7) located inside the center rod (2) is provided at the bottom end of the top tube (3), a first piston (8) is provided inside the first piston cylinder (6), a second piston (9) is provided inside the second piston cylinder (7), a piston rod (10) extending out of the first piston cylinder (6) is provided at the bottom end of the first piston (8), the bottom end of the piston rod (10) extends into the interior of the second piston cylinder (7) and is connected to the second piston (9), the upper cavity of the first piston cylinder (6) is connected to the first air inlet pipe (11), the lower cavity of the second piston cylinder (7) is connected to the second air inlet pipe (12), a U-shaped bracket (13) is provided in the middle of the piston rod (10), both ends of the bracket (13) are provided with temperature sensors (14), a guide sliding hole (15) matching the temperature sensor (14) is opened on the top tube (3), and air holes are provided at the bottom end of the first piston cylinder (6) and the top end of the second piston cylinder (7).

2. A tire vulcanizing machine center mechanism according to claim 1, characterized in that: A first solenoid valve (16) is installed on each of the first air intake pipe (11) and the second air intake pipe (12), and the first air intake pipe (11) and the second air intake pipe (12) are connected to an air intake manifold (17).

3. A tire vulcanizing machine center mechanism according to claim 1, characterized in that: The upper end of the first piston cylinder (6) is provided with a first electromagnetic pressure relief valve (18), and the lower end of the second piston cylinder (7) is provided with a second electromagnetic pressure relief valve (19).

4. A tire vulcanizing machine center mechanism according to claim 1, characterized in that: The ends of the piston rod (10) are connected to the first piston (8) and the second piston (9) via connecting pieces (20) respectively.

5. A tire vulcanizing machine center mechanism according to claim 4, characterized in that: The connecting member (20) includes a conical platform (21) provided at both ends of the piston rod (10), and a conical groove (22) matching the conical platform (21) is provided on one side of the first piston (8) and the second piston (9).

6. A tire vulcanizing machine center mechanism according to claim 5, characterized in that: The first piston (8) and the second piston (9) are fixedly connected to the conical platform (21) via bolts (23).

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