A pressure inflation system for a vulcanizing machine

Abstract

This utility model provides a pressure inflation system for a vulcanizing machine, which avoids pressure value errors caused by manual adjustment of the pressure reducing valve and air leakage due to switching losses. It includes an air source, a control valve group, a tire station, and inflation pipelines. The inflation pipelines are connected to the inflation port of at least one tire station. Each inflation pipeline is connected to a three-way shut-off valve. The air source includes a first air source and a second air source. The control valve group includes several air source solenoid valves arranged in parallel. The control end of the three-way shut-off valve is connected to the second air source after being connected to the corresponding air source solenoid valve. One end of the three-way shut-off valve is connected to the inflation port of the tire station. The first air source is connected to a first ball valve through a first air path. The output end of the first ball valve is connected in parallel to at least one second air path. Each second air path is connected to an actuator. The other end of the three-way shut-off valve is connected to a check valve. The output end of the actuator is connected in parallel to the port of at least one check valve.

Description

Technical Field

[0001] This utility model relates to the field of vulcanizing machine technology, specifically a pressure inflation system for a vulcanizing machine. Background Technology

[0002] The tire vulcanizing machine is a core piece of equipment in tire manufacturing. It uses high temperature and high pressure to vulcanize the rubber in the tire carcass. It is an indispensable piece of equipment in the tire manufacturing process. Post-inflation of the tire after vulcanization is an essential process to ensure the normal operation of the tire. That is, after the tire has been vulcanized and cooled for a period of time, it still needs to be inflated to avoid damage to the tire and ensure normal operation. Currently, tire inflation is generally done by connecting the vulcanizing machine to an air source. Different tires require air sources with pressures that match their tire pressure. This is because if the air source pressure is too high, it may damage the internal structure of the tire, while a low-pressure air source may lead to underinflation, affecting driving safety. Therefore, the correct inflation pressure is also crucial. Currently, the inflation system of the vulcanizing machine uses an electric converter, a balance valve, and a pressure reducing valve in the inflation pipeline to switch between different pressure air sources. However, switching requires manual adjustment of the pressure reducing valve in the pipeline, which not only complicates the pipeline structure but also leads to pressure value errors and leakage due to switching losses. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a pressure inflation system for vulcanizing machines, which can avoid pressure value errors caused by manually adjusting the pressure reducing valve and air leakage caused by switching losses during valve adjustment.

[0004] This utility model adopts the following technical solution: a pressure inflation system for a vulcanizing machine, comprising an air source, a control valve group, several tire stations, and several inflation pipelines. Each inflation pipeline is connected to an inflation port at least one of the tire stations. Each inflation pipeline is connected to a three-way shut-off valve. The air source includes a first air source and a second air source, with different pressures. The control valve group includes several air source solenoid valves arranged in parallel, the same number as the three-way shut-off valves. The control end of each three-way shut-off valve is connected to the second air source via a corresponding air source solenoid valve. One end of each three-way shut-off valve is connected to the inflation port of the tire station. The first air source is connected to a first ball valve via a first air path. The output end of the first ball valve is connected in parallel to at least one second air path. Each second air path is sequentially connected to an actuator. The other end of each three-way shut-off valve is connected to a one-way valve. The output end of each actuator is connected in parallel to the port of at least one of the one-way valves.

[0005] Furthermore, the pressure of the first gas source is 0.6 MPa;

[0006] Furthermore, the inlet ends of several of the gas source solenoid valves are connected in parallel to the second gas source, and the outlet ends of several of the gas source solenoid valves are respectively connected to the control end of the three-way shut-off valve; the outlet of the three-way shut-off valve is introduced into the trench.

[0007] Furthermore, a second ball valve is connected between the inflation port of the tire station and the inflation pipeline, and a pressure sensor is connected to the inflation pipeline;

[0008] Furthermore, the tire workstation is provided with four stations, namely the upper left station, the lower left station, the upper right station, and the lower right station;

[0009] Furthermore, the inflation pipeline is provided in two parts. The inflation ports of the upper left station and the upper right station are connected to the three-way shut-off valve in one of the inflation pipelines. The inflation ports of the lower left station and the lower right station are connected to the three-way shut-off valve in the other inflation pipeline.

[0010] Furthermore, the inflation pipeline is provided with four valves, and the inflation ports of the upper left, lower left, upper right, and lower right workstations are respectively connected to the three-way shut-off valves in the four inflation pipelines.

[0011] The beneficial effects of this utility model are that by using an electrical converter and several air source solenoid valves arranged in parallel with the same number as the three-way shut-off valve, the use of a balancing valve can be avoided, making the pipeline simpler and the cost lower. The tires to be inflated can be accurately inflated without manual adjustment, avoiding pressure value errors caused by manually adjusting the pressure reducing valve and air leakage caused by long-term adjustment of the pressure reducing valve switch. It has good application value. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the pipeline structure according to Embodiment 1 of this utility model;

[0013] Figure 2 This is a schematic diagram of the pipeline structure of Embodiment 2 of this utility model. Detailed Implementation

[0014] Example 1

[0015] like Figure 1As shown, this utility model discloses a pressure inflation system for a vulcanizing machine, comprising an air source, a control valve assembly, several tire stations, and several inflation pipelines 1. Each inflation pipeline 1 is connected to the inflation port of at least one tire station. A three-way shut-off valve 2 is connected to each inflation pipeline 1. The air source includes a first air source 3 and a second air source 4, with different pressures. The control valve assembly includes several air source solenoid valves 5 arranged in parallel, the same number as the three-way shut-off valves 2. The control end of the three-way shut-off valve 2 is connected to the second air source 4 via a corresponding air source solenoid valve 5. One end of the three-way shut-off valve 2 (i.e., one of its inlets) is connected to the inflation port of the tire station. The first air source 3 is connected to a first ball valve 7 via a first air passage 6. The output end of the first ball valve 7 is connected in parallel to at least one second air passage. Each of the second air passages 8 is connected in sequence with an actuator. The actuator can be an electric converter or an electronic pressure regulating valve. In this embodiment, the actuator is an electric converter. Since an electric converter is used, an oil mist filter 9 needs to be added to the second air passage 8. (If the actuator is an electronic pressure regulating valve, there is no need to add an oil mist filter. That is, each of the second air passages 8 is connected in sequence with an electronic pressure regulating valve. The output end of the electronic pressure regulating valve is connected in parallel with the port of at least one check valve 11.) So, each of the second air passages 8 is connected in sequence with an oil mist filter 9 and an electric converter 10. The other end of the three-way shut-off valve 2 (i.e., the other air inlet) is connected to a check valve 11. The output end of the electric converter 10 is connected in parallel with the port of at least one check valve 11.

[0016] The first air source 3 is used to provide the corresponding pressure to the tire station of the vulcanizing machine. The pressure of the first air source is 0.6MPa. The second air source 4 is used to provide power to the air source solenoid valve 5. The pressure of the second air source is suitable for the control pressure of the shut-off valve and can be different from the pressure of the first air source. The air inlet ends of several air source solenoid valves 5 are connected in parallel to the second air source 4, and the air outlet ends of several air source solenoid valves 5 are respectively connected to the control end of the three-way shut-off valve 2. The air outlet of the three-way shut-off valve 2 is introduced into the pit. The inflation port of the tire station and the inflation pipeline 1 are both connected to a second ball valve 12. A pressure sensor 13 is connected to the inflation pipeline 1.

[0017] There are four tire workstations: upper left workstation 14, lower left workstation 15, upper right workstation 16, and lower right workstation 17.

[0018] There are two inflation lines 1, and two three-way shut-off valves 2 and two air source solenoid valves 5. The inflation ports of the upper left station 14 and the upper right station 16 are connected to the three-way shut-off valve 2 in one of the inflation lines 1. The inflation ports of the lower left station 15 and the lower right station 17 are connected to the three-way shut-off valve 2 in the other inflation line 1. That is to say, the inflation ports of the upper left station 14 and the upper right station 16 are connected, and the inflation ports of the lower left station 15 and the lower right station 17 are connected. In other words, one inflation line 1 can simultaneously inflate the upper left station 14 and the upper right station 16, and the other inflation line 1 can simultaneously inflate the lower left station 15 and the lower right station 17.

[0019] Example 2

[0020] like Figure 2 As shown, the difference between Embodiment 2 and Embodiment 1 is that: the inflation pipeline 1 is provided with four sections, namely the upper left station 14, the lower left station 15, the upper right station 16, and the lower right station 17, which are independently operated for inflation. The inflation ports of the upper left station 14, the lower left station 15, the upper right station 16, and the lower right station 17 are respectively connected to the three-way shut-off valves 2 in the four inflation pipelines 1.

[0021] In this embodiment, the electrical converter 10 needs to be used in conjunction with the oil mist filter 9. Therefore, the electrical converter 10 and the oil mist filter 9 are considered as a group. In the case of four inflation pipelines 1 in Embodiment 2, there are also four three-way shut-off valves 2 and four air source solenoid valves 5, corresponding to two groups of electrical converters 10 and oil mist filters 9. The output end of one group of electrical converters 10 is connected in parallel with the one-way valve 11 in the inflation pipeline 1 connected to the corresponding upper left station 14 and lower left station 15. The output end of the other group of electrical converters 10 is connected in parallel with the one-way valve 11 in the inflation pipeline 1 connected to the corresponding upper right station 16 and lower right station 17. It should be noted that the output ends of the two groups of electrical converters 10 can be connected in parallel with the one-way valve 11 in the inflation pipeline 1 connected to different stations, depending on the situation. It is not limited to the structural diagram of Embodiment 2 of this utility model, but the connection situation and principle are the same, that is, the output end of the electrical converter 10 can be connected in parallel with the one-way valve 11 in the two inflation pipelines 1.

[0022] In this invention, the analog output of an existing controller is used to control an electrical converter 10 (an electronic pressure regulating valve can also be used; if an electronic pressure regulating valve is used, an oil mist filter is not required in the pipeline). This allows adjustment of the inflation pressure after the vulcanizing machine is activated. In other words, after the first gas source 3 enters the pressure inflation system, it can be further adjusted by the electrical converter 10 to become the required pressure gas source, and then sent to the corresponding workstation for inflation via a shut-off valve. Subsequently, the controller energizes the corresponding gas source solenoid valve 5. The output pipeline of the gas source solenoid valve 5 contains air, causing the valve core of the three-way shut-off valve 2 to be depressed. The inlets (ports 1 and 2) of the three-way shut-off valve 2 are connected, allowing switching to the position already energized. The air converter 10 adjusts the inflation line 1 to the corresponding pressure, thereby accurately inflating the tires to be inflated at the workstation. When deflation is required, the air source solenoid valve 5 controls the three-way shut-off valve 2 to switch the air path, leading to the drain through the outlet (port 3) of the three-way shut-off valve 2 to achieve deflation. That is, the controller controls the air source solenoid valve 5 to be de-energized, and the output line of the air source solenoid valve 5 is de-energized, which allows the valve core of the three-way shut-off valve 2 to return to its original position and switch to the outlet (port 3), thereby releasing the air pressure from the inflated tire. In summary, the appropriate pressure air source can be adjusted according to actual usage requirements, and the pressure value error caused by the existing manual adjustment of the pressure reducing valve and the switching wear and leakage caused by long-term adjustment of the pressure reducing valve switch can be avoided.

[0023] In the diagram, ports 1 and 2 of the three-way shut-off valve 2 are both used as air inlets, and port 3 is used as an air outlet.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressurized air system for curing presses, characterized by: The system includes an air source, a control valve assembly, several tire workstations, and several inflation lines. Each inflation line is connected to the inflation port of at least one of the tire workstations. Each inflation line is equipped with a three-way shut-off valve. The air source includes a first air source and a second air source, with different pressures. The control valve assembly includes several air source solenoid valves arranged in parallel, the same number as the three-way shut-off valves. The control terminal of each three-way shut-off valve is connected to the second air source via a corresponding air source solenoid valve. One end of each three-way shut-off valve is connected to the inflation port of the tire workstation. The first air source is connected to a first ball valve via a first air path. The output of the first ball valve is connected in parallel to at least one second air path. Each second air path is sequentially connected to an actuator. The other end of each three-way shut-off valve is connected to a check valve. The output of each actuator is connected in parallel to the port of at least one check valve.

2. A pressure inflation system for curing presses according to claim 1, characterized in that: The pressure of the first gas source is 0.6 MPa.

3. A pressure inflation system for curing presses according to claim 1, characterized in that: The air inlet ends of several of the gas source solenoid valves are connected in parallel to the second gas source, and the air outlet ends of several of the gas source solenoid valves are respectively connected to the control end of the three-way shut-off valve; the air outlet of the three-way shut-off valve is introduced into the trench.

4. A pressure inflation system for curing presses according to claim 1, characterized in that: A second ball valve is connected between the inflation port of the tire station and the inflation line, and a pressure sensor is connected to the inflation line.

5. A pressure inflation system for curing presses according to any one of claims 1 to 4, characterized in that: The tire manufacturing station has four sections: upper left, lower left, upper right, and lower right.

6. A pressure inflation system for curing presses according to claim 5, characterized in that: The inflation pipeline is provided in two parts. The inflation ports of the upper left and upper right workstations are connected to the three-way shut-off valve in one of the inflation pipelines. The inflation ports of the lower left and lower right workstations are connected to the three-way shut-off valve in the other inflation pipeline.

7. A pressure inflation system for curing presses according to claim 5, characterized in that: The inflation pipeline is provided with four valves, and the inflation ports of the upper left, lower left, upper right, and lower right workstations are respectively connected to the three-way shut-off valves in the four inflation pipelines.

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