Internal pressure pipeline system of vulcanizing machine

Abstract

According to the internal pressure pipeline system of the vulcanizing machine, the working efficiency of main discharging and vacuumizing procedures can be improved, meanwhile, the occupied space of a pipeline is controlled, energy conservation and high efficiency are achieved, and the maintenance cost is reduced; comprising a shaping nitrogen inlet pipeline, a high-pressure steam inlet pipeline, a high-pressure nitrogen inlet pipeline, a vacuumizing pipeline, a main exhaust pipeline and a capsule, the shaping nitrogen inlet pipeline is connected with a gas source pipeline, an inlet pipeline of the capsule is connected with a three-way control piece, and the main exhaust pipeline and the vacuumizing pipeline are both connected with a two-way control piece. The inlet end of the three-way control piece is connected with the outlet ends of the shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline and the high-pressure nitrogen inlet pipeline, and one outlet end of the three-way control piece is connected with the inlet end of the capsule; the other outlet end of the three-way control piece is connected with the main discharge pipeline, the inlet end of the two-way control piece on the vacuumizing pipeline and the outlet end of the capsule, and the outlet end of the two-way control piece on the main discharge pipeline and the outlet end of the two-way control piece on the vacuumizing pipeline are correspondingly connected with the main discharge outlet and the vacuumizing outlet respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of tire vulcanization, and specifically to an internal pressure pipeline system in a vulcanizer. Background Art

[0002] The vulcanization bladder plays a crucial role in the tire manufacturing process. The bladder is mainly used for internal inflation, which can be compressed air, nitrogen or superheated water, to form internal pressure and vulcanize the tire. It is not only responsible for internal inflation to form internal pressure, but also directly affects the vulcanization quality and efficiency of the tire. The bladder in the vulcanizer needs to perform pressurization and depressurization operations during the vulcanization process. Before vulcanization starts, steam pressure or hot water pressure is introduced into the bladder to make the green tire reach the set internal pressure. During vulcanization, the pressure in the bladder needs to be maintained within a certain range to ensure uniform vulcanization of the tire. After vulcanization is completed, the pressure in the bladder needs to be reduced to remove the vulcanized tire from the mold. The depressurization operation is usually achieved by releasing internal gas or hot water. Among them, during the whole vulcanization process, "main discharge" and "vacuum pumping" are important and frequently used process steps in the bladder operation. Main discharge refers to emptying the remaining gas and condensed water in the bladder. Vacuum pumping is mainly used to ensure the tight fit between the bladder and the mold. It means pumping out the air in the bladder to create a vacuum environment, which helps to remove bubbles and volatiles in the rubber and improve the product quality. These two links play a key role in tire vulcanization, and their discharge stability affects the entire tire vulcanization process, which can promote the production capacity of the factory, reduce tire scrap, and avoid wasting the energy used. However, in the tire vulcanization process, these two process links have always required separate pipeline structures to achieve separate inlet and outlet discharges. In order to improve the working efficiency of "main discharge" and "vacuum pumping", two additional cut-off valves need to be added at both ends of the respective inlet and outlet pipelines for control. This not only increases the complicated pipeline design of additional components, increases the space volume of the internal pressure pipeline system, but also increases the maintenance difficulty. Summary of the Invention

[0003] In view of the above problems, the present invention provides an internal pressure pipeline system for a vulcanizer, which can improve the working efficiency of the main discharge and vacuum pumping processes while controlling the space occupied by the pipeline, achieving energy conservation and high efficiency, and reducing the maintenance cost.

[0004] The present invention adopts the following technical solution. An internal pressure pipeline system of a vulcanizer includes a shaping nitrogen inlet pipeline, a high-pressure steam inlet pipeline, a high-pressure nitrogen inlet pipeline, a vacuum pumping pipeline, a main discharge pipeline, and a bladder. The shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline are arranged in parallel. The shaping nitrogen inlet pipeline is used to fill shaping nitrogen into the bladder. The high-pressure steam inlet pipeline is used to fill high-pressure steam into the bladder. The high-pressure nitrogen inlet pipeline is used to fill high-pressure nitrogen into the bladder. The shaping nitrogen inlet pipeline is connected to a gas source pipeline. A three-way control component is connected to the inlet pipeline of the bladder. Two-way control components are connected to both the main discharge pipeline and the vacuum pumping pipeline. The inlet end of the three-way control component is connected to the outlet ends of the shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One outlet end of the three-way control component is connected to the inlet end of the bladder. The other outlet end of the three-way control component is connected to the inlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline and the outlet end of the bladder. The outlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline are respectively connected to a main discharge outlet and a vacuum pumping outlet.

[0005] Further, the internal pressure pipeline system of the vulcanizer further includes an electromagnetic valve group. The electromagnetic valve group includes a first electromagnetic valve SV1L to an eleventh electromagnetic valve SV11L. The working output A ports of the second electromagnetic valve SV2L to the eleventh electromagnetic valve SV11L are respectively connected to control contacts L2 to control contacts L11. Along the conveying direction, a gas source, a first ball valve BV1L, a filter pressure reducing valve AW1, and a first hand-operated valve HV1L are sequentially arranged on the gas source pipeline. The outlet end of the first hand-operated valve HV1L is divided into two paths. One path is connected to the first electromagnetic valve SV1L and then connected to the inlet ports of the second electromagnetic valve SV2L and the third electromagnetic valve SV3L. The other path is connected to the inlet of the IP valve and the inlet ports of the second electromagnetic valve SV4L to the eleventh electromagnetic valve SV11L. The outlet of the IP valve is connected to the shaping nitrogen inlet pipeline. The control contacts L2 and the control contact L3 are respectively connected to two selection ports of a first selection valve XZ1L. The outlet of the first selection valve XZ1L and the control contact L11 are respectively connected to two selection ports of a second selection valve XZ2L. The outlet of the second selection valve XZ2L is connected to the control contact L12. The control contact L5 is connected to the control contact L1 after passing through a second hand-operated valve HV2L. The control contacts L1 to the control contacts L12 are all connected to a PLC controller.

[0006] Further, the three-way control part uses a three-way cut-off valve, which is the three-way cut-off valve AV12L; the two-way control part uses two-way cut-off valves, which are divided into the two-way cut-off valve AV4L and the two-way cut-off valve AV5L; the inlet of the three-way cut-off valve AV12L is connected to the outlets of the sizing nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One outlet of the three-way cut-off valve AV12L is connected to the inlet end of the capsule after being connected to the two-way cut-off valve AV9L. The other outlet of the three-way cut-off valve AV12L is connected to the inlets of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV10L is connected to the outlet end of the capsule after being connected to the filter STR4L. The outlet of the two-way cut-off valve AV4L is sequentially connected to the check valve CV5L and the terminal ball valve DN5 along the conveying direction and then connected to the main discharge outlet. The outlet of the two-way cut-off valve AV5L is sequentially connected to the check valve CV4L and the terminal ball valve DN4 along the conveying direction and then connected to the vacuum extraction outlet. The drive control end of the three-way cut-off valve AV12L is connected to the control contact L12. The drive control ends of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, the two-way cut-off valve AV9L, and the two-way cut-off valve AV10L are respectively connected to the control contacts L4, L5, L9, and L10;

[0007] Further, a three-way cut-off valve AV13L, a second ball valve BV1L, a pressure switch PS1L, and a pressure sensor PT1L are arranged on the connecting pipeline between the two-way cut-off valve AV10L and the filter STR4L. The second ball valve BV1L is connected to the axial pressure gauge PG1L. The outlet of the three-way cut-off valve AV13L is connected to a pressure sensor PT2L. The drive control end of the three-way cut-off valve AV13L is connected to the control contact L11; a temperature sensor RTD1L is arranged on the connecting pipeline between the outlet end of the capsule and the filter STR4L;

[0008] Further, a terminal ball valve DN1, a filter STR1L, a balance valve PF1L, a check valve CV1L, and a three-way cut-off valve AV11L are sequentially arranged on the sizing nitrogen inlet pipeline along the conveying direction. The drive control end of the three-way cut-off valve AV11L is connected to the control contact L11 after being connected to the exhaust valve KP1L. The outlet of the three-way cut-off valve AV11L is connected to the inlet of the three-way cut-off valve AV12L; the outlet of the IP valve is connected to the control end of the balance valve PF1L, and a third ball valve BV2L is connected to the axial pressure gauge PG2L on the connecting pipeline between the balance valve PF1L and the check valve CV1L;

[0009] Further, a terminal ball valve DN2, a filter STR2L, a check valve CV2L, and a two-way cut-off valve AV2L are sequentially arranged on the high-pressure steam inlet pipeline along the conveying direction. The drive control end of the two-way cut-off valve AV2L is connected to the control contact L2, and the outlet of the two-way cut-off valve AV2L is connected to the inlet of the three-way cut-off valve AV12L; a terminal ball valve DN3, a filter STR3L, a check valve CV3L, and a two-way cut-off valve AV3L are sequentially arranged on the high-pressure nitrogen inlet pipeline along the conveying direction. The drive control end of the two-way cut-off valve AV3L is connected to the control contact L3, and the outlet of the two-way cut-off valve AV3L is connected to the inlet of the three-way cut-off valve AV12L;

[0010] Further, the internal pressure pipeline system of the vulcanizer further includes a nitrogen drainage pipeline, a nitrogen recovery pipeline, and a steam drainage pipeline. The nitrogen drainage pipeline includes a two-way cut-off valve AV7L. The inlet of the two-way cut-off valve AV7L is connected to another air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The outlet of the two-way cut-off valve AV7L is connected to the connecting pipeline between the two-way cut-off valve AV4L and the check valve CV5L; a two-way cut-off valve AV8L, a check valve CV6L, and a terminal ball valve DN6 are sequentially arranged on the nitrogen recovery pipeline along the conveying direction. The outlet of the terminal ball valve DN6 is connected to the nitrogen recovery port; a two-way cut-off valve AV6L, a check valve CV7L, and a terminal ball valve DN7 are sequentially arranged on the steam drainage pipeline along the conveying direction. The outlet of the terminal ball valve DN7 is connected to the steam drainage port; the drive control ends of the two-way cut-off valve AV6L, the two-way cut-off valve AV7L, and the two-way cut-off valve AV8L are respectively connected to the control contact L6, the control contact L7, and the control contact L8. The inlet of the two-way cut-off valve AV6L is connected to another air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV8L is connected to another air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L;

[0011] Further, the pressure of the gas source is 6 Bar, the pressure of the setting nitrogen inlet in the setting nitrogen inlet pipeline is 3 Bar, the pressure of the steam inlet in the high-pressure steam inlet pipeline is 18 Bar, and the pressure of the nitrogen inlet in the high-pressure nitrogen inlet pipeline is 23 Bar;

[0012] Further, the working output A ports of the first solenoid valve SV1L to the eleventh solenoid valve SV11L are respectively connected to pressure gauges GA1L to GA11L; the exhaust ports EA of the second solenoid valve SV2L and the third solenoid valve SV3L are connected to a first muffler after being connected together, and the exhaust ports EB of the second solenoid valve SV2L and the third solenoid valve SV3L are connected to a second muffler after being connected together; the exhaust ports EA of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected to a third muffler after being connected together, and the exhaust ports EB of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected to a fourth muffler after being connected together.

[0013] The beneficial effect of the present invention is that through the provided three-way control member and two-way control member, one outlet end of the three-way control member is connected to the inlet end of the capsule, and the other outlet end of the three-way control member is connected to the inlet ends of the two-way control members on the main exhaust pipeline and the vacuum pumping pipeline, as well as the outlet end of the capsule. Thus, the combination and optimization of the inlet and outlet ends of the main exhaust and vacuum pumping are achieved. When any one of the main exhaust and vacuum pumping processes is working, the inlet end of the capsule can form a passage through the three-way control member and the two-way control member, and the outlet end of the capsule also forms a passage. Therefore, dual-channel simultaneous operation can be realized, which can ensure and improve the working efficiency of the main exhaust and vacuum pumping processes. At the same time, it can avoid adding complicated designs such as additional pipelines, optimize the utilization rate of the original pipelines, reduce the space volume of the internal pressure pipeline system, achieve energy saving and high efficiency, and has good economic use value. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the pipeline connection structure of the present invention. Detailed Embodiment

[0015] As Figure 1As shown in the figure, an internal pressure pipeline system of a vulcanizer according to the present invention includes a sizing nitrogen inlet pipeline, a high-pressure steam inlet pipeline, a high-pressure nitrogen inlet pipeline, a vacuum pumping pipeline, a main discharge pipeline, and a bladder 1. The sizing nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline are arranged in parallel. The sizing nitrogen inlet pipeline is used to fill sizing nitrogen into the bladder 1, the high-pressure steam inlet pipeline is used to fill high-pressure steam into the bladder 1, and the high-pressure nitrogen inlet pipeline is used to fill high-pressure nitrogen into the bladder 1. The sizing nitrogen inlet pipeline is connected to a gas source pipeline. A three-way control component is connected to the inlet pipeline of the bladder 1. Two-way control components are connected to both the main discharge pipeline and the vacuum pumping pipeline. The inlet end of the three-way control component is connected to the outlet ends of the sizing nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One outlet end of the three-way control component is connected to the inlet end of the bladder 1, and the other outlet end of the three-way control component is connected to the inlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline and the outlet end of the bladder 1. The outlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline are respectively connected to a main discharge outlet 7 and a vacuum pumping outlet 6.

[0016] The internal pressure pipeline system of the vulcanizer further includes a solenoid valve group. The solenoid valve group includes a first solenoid valve SV1L to an eleventh solenoid valve SV11L. The working output A ports of the second solenoid valve SV2L to the eleventh solenoid valve SV11L are respectively connected to control contacts L2 to L11. Along the conveying direction, a gas source 2, a first ball valve BV1L, a filter pressure reducing valve AW1, and a first hand-operated valve HV1L are sequentially arranged on the gas source pipeline. The outlet end of the first hand-operated valve HV1L is divided into two paths. One path is connected to the second solenoid valve SV2L and the inlet ports of the third solenoid valve SV3L after passing through the first solenoid valve SV1L. The other path is connected to the inlet of the IP valve and the inlet ports of the second solenoid valve SV4L to the eleventh solenoid valve SV11L. The outlet of the IP valve is connected to the sizing nitrogen inlet pipeline. The control contacts L2 and L3 are respectively connected to two selection ports of a first selection valve XZ1L. The outlet of the first selection valve XZ1L and the control contact L11 are respectively connected to two selection ports of a second selection valve XZ2L. The outlet of the second selection valve XZ2L is connected to the control contact L12. The control contact L5 is connected to the control contact L1 after passing through a second hand-operated valve HV2L. The control contacts L1 to L12 are all connected to a PLC controller.

[0017] The three-way control component uses a three-way cut-off valve, which is the three-way cut-off valve AV12L; the two-way control component uses a two-way cut-off valve, which is divided into the two-way cut-off valve AV4L and the two-way cut-off valve AV5L; the inlet of the three-way cut-off valve AV12L is connected to the outlets of the shaped nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One of the air outlets of the three-way cut-off valve AV12L is connected to the inlet end of the capsule 1 after being connected to the two-way cut-off valve AV9L. The other air outlet of the three-way cut-off valve AV12L is connected to the inlets of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV10L is connected to the outlet end of the capsule 1 after being connected to the filter STR4L. The outlet of the two-way cut-off valve AV4L is connected to the main discharge outlet 7 after sequentially connecting the check valve CV5L and the terminal ball valve DN5 along the conveying direction. The outlet of the two-way cut-off valve AV5L is connected to the vacuum extraction outlet 6 after sequentially connecting the check valve CV4L and the terminal ball valve DN4 along the conveying direction. The drive control end of the three-way cut-off valve AV12L is connected to the control contact L12. The drive control ends of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, the two-way cut-off valve AV9L, and the two-way cut-off valve AV10L are respectively connected to the control contacts L4, L5, L9, and L10.

[0018] A three-way cut-off valve AV13L, a second ball valve BV1L, a pressure switch PS1L, and a pressure sensor PT1L are arranged on the connecting pipeline between the two-way cut-off valve AV10L and the filter STR4L. The second ball valve BV1L is connected to the axial pressure gauge PG1L. The outlet of the three-way cut-off valve AV13L is connected to a pressure sensor PT2L. The drive control end of the three-way cut-off valve AV13L is connected to the control contact L11; a temperature sensor RTD1L is arranged on the connecting pipeline between the outlet end of the capsule 1 and the filter STR4L.

[0019] The shaped nitrogen inlet pipeline is sequentially provided with a terminal ball valve DN1, a filter STR1L, a balance valve PF1L, a check valve CV1L, and a three-way cut-off valve AV11L along the conveying direction. The drive control end of the three-way cut-off valve AV11L is connected to the control contact L11 after being connected to the exhaust valve KP1L. The outlet of the three-way cut-off valve AV11L is connected to the inlet of the three-way cut-off valve AV12L; the outlet of the IP valve is connected to the control end of the balance valve PF1L, and the connecting pipeline between the balance valve PF1L and the check valve CV1L is connected to the axial pressure gauge PG2L after being connected to the third ball valve BV2L.

[0020] The high-pressure steam inlet pipeline is sequentially provided with a terminal ball valve DN2, a filter STR2L, a check valve CV2L, and a two-way cut-off valve AV2L along the conveying direction. The drive control end of the two-way cut-off valve AV2L is connected to the control contact L2, and the outlet of the two-way cut-off valve AV2L is connected to the inlet of the three-way cut-off valve AV12L; the high-pressure nitrogen inlet pipeline is sequentially provided with a terminal ball valve DN3, a filter STR3L, a check valve CV3L, and a two-way cut-off valve AV3L along the conveying direction. The drive control end of the two-way cut-off valve AV3L is connected to the control contact L3, and the outlet of the two-way cut-off valve AV3L is connected to the inlet of the three-way cut-off valve AV12L.

[0021] The internal pressure pipeline system of the vulcanizer further includes a nitrogen drain pipeline, a nitrogen recovery pipeline, and a steam drain pipeline. The nitrogen drain pipeline includes a two-way cut-off valve AV7L. The inlet of the two-way cut-off valve AV7L is connected to the other gas outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The outlet of the two-way cut-off valve AV7L is connected to the connecting pipeline between the two-way cut-off valve AV4L and the check valve CV5L; the nitrogen recovery pipeline is sequentially provided with a two-way cut-off valve AV8L, a check valve CV6L, and a terminal ball valve DN6 along the conveying direction. The outlet of the terminal ball valve DN6 is connected to the nitrogen recovery port 8; the steam drain pipeline is sequentially provided with a two-way cut-off valve AV6L, a check valve CV7L, and a terminal ball valve DN7 along the conveying direction. The outlet of the terminal ball valve DN7 is connected to the steam drain port 9; the drive control ends of the two-way cut-off valve AV6L, the two-way cut-off valve AV7L, and the two-way cut-off valve AV8L are respectively connected to the control contact L6, the control contact L7, and the control contact L8. The inlet of the two-way cut-off valve AV6L is connected to the other gas outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV8L is connected to the other gas outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L.

[0022] The pressure of the gas source 2 is 6 Bar, the pressure of the shaping nitrogen inlet 3 in the shaping nitrogen inlet pipeline is 3 Bar, the pressure of the steam inlet 4 in the high-pressure steam inlet pipeline is 18 Bar, and the pressure of the nitrogen inlet 5 in the high-pressure nitrogen inlet pipeline is 23 Bar; the working output A ports of the first solenoid valve SV1L to the eleventh solenoid valve SV11L are respectively connected to the pressure gauges GA1L to GA11L; the exhaust ports EA of the second solenoid valve SV2L and the third solenoid valve SV3L are connected after being connected to the first muffler 10, and the exhaust ports EB of the second solenoid valve SV2L and the third solenoid valve SV3L are connected after being connected to the second muffler 11; the exhaust ports EA of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected after being connected to the third muffler 12, and the exhaust ports EB of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected after being connected to the fourth muffler 13.

[0023] The working principle of the present invention is as follows:

[0024] When the vacuum pumping process is enabled, the gas source 2 is introduced into the fifth solenoid valve SV5L, the ninth solenoid valve SV9L, the tenth solenoid valve SV10L, and the eleventh solenoid valve SV11L. Subsequently, controlled by the control contacts L1, L5, L9, L10, and L12, the inlet end of the capsule 1 is opened and conducted through the two-way cut-off valve AV9L, the three-way cut-off valve AV12L, and the two-way cut-off valve AV5L to form a first passage, and the outlet end of the capsule 1 is opened and conducted through the two-way cut-off valve AV10L and the two-way cut-off valve AV5L to form a second passage. The simultaneous operation of the two channels of the first passage and the second passage can ensure the stable and efficient operation of the "vacuum pumping" work;

[0025] When the main discharge process is enabled, the gas source 2 is introduced into the fourth solenoid valve SV4L, the ninth solenoid valve SV9L, the tenth solenoid valve SV10L, and the eleventh solenoid valve SV11L. Subsequently, controlled by the control contacts L4, L9, L10, and L12, the inlet end of the capsule 1 is opened and conducted through the two-way cut-off valve AV9L, the three-way cut-off valve AV12L, and the two-way cut-off valve AV4L to form a first passage, and the outlet end of the capsule 1 is opened and conducted through the two-way cut-off valve AV10L and the two-way cut-off valve AV4L to form a second passage. The simultaneous operation of the two channels of the first passage and the second passage can ensure the stable and efficient operation of the "main discharge" work;

[0026] During the tire vulcanization process, the full utilization of pipelines can control the space volume of the internal temperature valve group, optimize the utilization rate of the original pipelines, reduce the risk of valve group damage during transportation, and reduce the probability of valve group damage by the construction and installation team during the installation process. By merging the "main drain" and "vacuum extraction" inlet and outlet ends, while greatly improving the equipment stability without adding additional components, it realizes efficient energy conservation and source reduction. Moreover, with the two channels working simultaneously, the fault tolerance rate of the equipment is increased, the maintenance cost is reduced, and it can reduce the damage of the equipment caused by factors such as thermal shock in high-temperature or low-temperature environments, thereby reducing the impact on the entire tire vulcanization process, increasing the guarantee of tire quality, and reducing the equipment maintenance cycle. In addition, with the two channels working simultaneously, it can avoid excessive pressure differences formed in the pipelines and capsule 1 due to pressure changes at the inlet and outlet ends, thus avoiding excessive deformation of the pipelines and capsule 1 and extending the service life of the equipment. When other processes need to be realized, only the gas source 2 needs to be introduced into the corresponding pipeline to control the connected solenoid valve, and then the cut-off valve is opened or closed through the corresponding control contacts to form a conduction or disconnection path, and then the corresponding process can be realized. For example, when the process of entering shaping nitrogen is required, the gas source 2 is introduced into the ninth solenoid valve SV9L and the eleventh solenoid valve SV11L, and at the same time, the IP valve IP1L and the balance valve PF1L are opened through the gas source 2. Then, through the control contact L9, the control contact L11, and the control contact L12, the three-way cut-off valve AV11L, the three-way cut-off valve AV12L, and the two-way cut-off valve AV9L are all opened and conducted. Then, the shaping nitrogen enters the capsule 1 in sequence through the shaping nitrogen inlet 3, the terminal ball valve DN1, the filter STR1L, the balance valve PF1L, the one-way valve CV1L, the three-way cut-off valve AV11L, the three-way cut-off valve AV12L, and the two-way cut-off valve AV9L. The principles of other processes are the same and will not be elaborated.

[0027] In summary, the present invention controls the occupied space of the internal pressure pipeline system of the vulcanizer while improving work efficiency, reduces energy consumption, improves the pipeline utilization rate, and has the effects of energy conservation, efficiency increase, and maintenance cost reduction.

[0028] The present invention can realize different processes through the shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline, the high-pressure nitrogen inlet pipeline, the vacuum extraction pipeline, the main drain pipeline, the nitrogen drain condensate pipeline, the nitrogen recovery pipeline, and the steam drain condensate pipeline, that is

[0029] The shaping nitrogen inlet pipeline is used to fill the capsule 1 with shaping nitrogen to shape the tire embryo.

[0030] The high-pressure steam inlet pipeline is used to fill the capsule 1 with high-pressure steam to make the temperature of the capsule 1 reach the process required temperature.

[0031] The high-pressure nitrogen inlet pipeline is used to fill the capsule 1 with high-pressure nitrogen to make the internal pressure of the capsule 1 reach the process required pressure.

[0032] The vacuum pipeline is used to evacuate the inside of the capsule 1 to a vacuum;

[0033] The main exhaust pipeline is used to discharge the remaining gas from the inside of the capsule 1;

[0034] The nitrogen drain pipeline is used to discharge the remaining condensed water from the inside of the capsule 1;

[0035] The nitrogen recovery pipeline is used to recover nitrogen after vulcanization;

[0036] The steam drain pipeline is used to achieve steam drainage.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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. An internal pressure pipeline system of a vulcanizer, characterized in that: It includes a shaping nitrogen inlet pipeline, a high-pressure steam inlet pipeline, a high-pressure nitrogen inlet pipeline, a vacuum pumping pipeline, a main discharge pipeline, and a capsule. The shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline are arranged in parallel. The shaping nitrogen inlet pipeline is used to fill the capsule with shaping nitrogen. The high-pressure steam inlet pipeline is used to fill the capsule with high-pressure steam. The high-pressure nitrogen inlet pipeline is used to fill the capsule with high-pressure nitrogen. The shaping nitrogen inlet pipeline is connected to a gas source pipeline. A three-way control component is connected to the inlet pipeline of the capsule. Two-way control components are connected to both the main discharge pipeline and the vacuum pumping pipeline. The inlet end of the three-way control component is connected to the outlet ends of the shaping nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One outlet end of the three-way control component is connected to the inlet end of the capsule. The other outlet end of the three-way control component is connected to the inlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline, as well as the outlet end of the capsule. The outlet ends of the two-way control components on the main discharge pipeline and the vacuum pumping pipeline are respectively connected to a main discharge outlet and a vacuum pumping outlet.

2. The internal pressure pipeline system of a vulcanizer according to claim 1, characterized in that: The internal pressure pipeline system of the vulcanizer further includes a solenoid valve group. The solenoid valve group includes a first solenoid valve SV1L to an eleventh solenoid valve SV11L. The working output A ports of the second solenoid valve SV2L to the eleventh solenoid valve SV11L are respectively connected to control contacts L2 to control contacts L11. Along the conveying direction, a gas source, a first ball valve BV1L, a filter pressure reducing valve AW1, and a first hand-operated valve HV1L are sequentially arranged on the gas source pipeline. The outlet end of the first hand-operated valve HV1L is divided into two paths. One path is connected to the first solenoid valve SV1L and then connected to the inlet ports of the second solenoid valve SV2L and the third solenoid valve SV3L. The other path is connected to the inlet of the IP valve and the inlet ports of the second solenoid valve SV4L to the eleventh solenoid valve SV11L. The outlet of the IP valve is connected to the shaping nitrogen inlet pipeline. The control contacts L2 and the control contact L3 are respectively connected to two selection ports of a first selection valve XZ1L. The outlet of the first selection valve XZ1L and the control contact L11 are respectively connected to two selection ports of a second selection valve XZ2L. The outlet of the second selection valve XZ2L is connected to the control contact L12. The control contact L5 is connected to the control contact L1 after passing through a second hand-operated valve HV2L. The control contacts L1 to L12 are all connected to a PLC controller.

3. The internal pressure pipeline system of a vulcanizer according to claim 2, characterized in that: The three-way control component uses a three-way cut-off valve, which is the three-way cut-off valve AV12L; the two-way control component uses a two-way cut-off valve, which is divided into the two-way cut-off valve AV4L and the two-way cut-off valve AV5L; the inlet of the three-way cut-off valve AV12L is connected to the outlets of the shaped nitrogen inlet pipeline, the high-pressure steam inlet pipeline, and the high-pressure nitrogen inlet pipeline. One outlet of the three-way cut-off valve AV12L is connected to the inlet end of the capsule after being connected to the two-way cut-off valve AV9L. The other outlet of the three-way cut-off valve AV12L is connected to the inlets of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV10L is connected to the outlet end of the capsule after being connected to the filter STR4L. The outlet of the two-way cut-off valve AV4L is connected to the main discharge outlet after sequentially connecting the check valve CV5L and the terminal ball valve DN5 along the conveying direction. The outlet of the two-way cut-off valve AV5L is connected to the vacuum extraction outlet after sequentially connecting the check valve CV4L and the terminal ball valve DN4 along the conveying direction. The drive control end of the three-way cut-off valve AV12L is connected to the control contact L12. The drive control ends of the two-way cut-off valve AV4L, the two-way cut-off valve AV5L, the two-way cut-off valve AV9L, and the two-way cut-off valve AV10L are respectively connected to the control contacts L4, L5, L9, and L10.

4. A vulcanizer internal pressure pipeline system according to claim 3, characterized in that: A three-way cut-off valve AV13L, a second ball valve BV1L, a pressure switch PS1L, and a pressure sensor PT1L are arranged on the connecting pipeline between the two-way cut-off valve AV10L and the filter STR4L. The second ball valve BV1L is connected to the axial pressure gauge PG1L. The outlet of the three-way cut-off valve AV13L is connected to a pressure sensor PT2L. The drive control end of the three-way cut-off valve AV13L is connected to the control contact L11; a temperature sensor RTD1L is arranged on the connecting pipeline between the outlet end of the capsule and the filter STR4L.

5. The internal pressure pipeline system of a vulcanizer according to claim 3, characterized in that: The shaped nitrogen inlet pipeline is sequentially provided with a terminal ball valve DN1, a filter STR1L, a balance valve PF1L, a check valve CV1L, and a three-way cut-off valve AV11L along the conveying direction. The drive control end of the three-way cut-off valve AV11L is connected to the control contact L11 after being connected to the exhaust valve KP1L. The outlet of the three-way cut-off valve AV11L is connected to the inlet of the three-way cut-off valve AV12L; the outlet of the IP valve is connected to the control end of the balance valve PF1L. And a third ball valve BV2L is connected to the axial pressure gauge PG2L on the connecting pipeline between the balance valve PF1L and the check valve CV1L.

6. The internal pressure pipeline system of a vulcanizer according to claim 3, characterized in that: The high-pressure steam inlet pipeline is sequentially provided with a terminal ball valve DN2, a filter STR2L, a check valve CV2L, and a two-way cut-off valve AV2L along the conveying direction. The drive control end of the two-way cut-off valve AV2L is connected to the control contact L2, and the outlet of the two-way cut-off valve AV2L is connected to the inlet of the three-way cut-off valve AV12L; the high-pressure nitrogen inlet pipeline is sequentially provided with a terminal ball valve DN3, a filter STR3L, a check valve CV3L, and a two-way cut-off valve AV3L along the conveying direction. The drive control end of the two-way cut-off valve AV3L is connected to the control contact L3, and the outlet of the two-way cut-off valve AV3L is connected to the inlet of the three-way cut-off valve AV12L.

7. The internal pressure pipeline system of a vulcanizer according to claim 3, characterized in that: The internal pressure pipeline system of the vulcanizer further includes a nitrogen drain pipeline, a nitrogen recovery pipeline, and a steam drain pipeline. The nitrogen drain pipeline includes a two-way cut-off valve AV7L. The inlet of the two-way cut-off valve AV7L is connected to the other air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The outlet of the two-way cut-off valve AV7L is connected to the connecting pipeline between the two-way cut-off valve AV4L and the check valve CV5L; the nitrogen recovery pipeline is sequentially provided with a two-way cut-off valve AV8L, a check valve CV6L, and a terminal ball valve DN6 along the conveying direction. The outlet of the terminal ball valve DN6 is connected to the nitrogen recovery port; the steam drain pipeline is sequentially provided with a two-way cut-off valve AV6L, a check valve CV7L, and a terminal ball valve DN7 along the conveying direction. The outlet of the terminal ball valve DN7 is connected to the steam drain port; the drive control ends of the two-way cut-off valve AV6L, the two-way cut-off valve AV7L, and the two-way cut-off valve AV8L are respectively connected to the control contact L6, the control contact L7, and the control contact L8. The inlet of the two-way cut-off valve AV6L is connected to the other air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L. The inlet of the two-way cut-off valve AV8L is connected to the other air outlet of the three-way cut-off valve AV12L and the outlet of the two-way cut-off valve AV10L.

8. The internal pressure pipeline system of a vulcanizer according to claim 2, characterized in that: The pressure of the gas source is 6 Bar, the pressure at the fixed-form nitrogen inlet in the fixed-form nitrogen inlet pipeline is 3 Bar, the pressure at the steam inlet in the high-pressure steam inlet pipeline is 18 Bar, and the pressure at the nitrogen inlet in the high-pressure nitrogen inlet pipeline is 23 Bar.

9. The internal pressure pipeline system of a vulcanizer according to claim 2, characterized in that: The working output A ports of the first solenoid valve SV1L to the eleventh solenoid valve SV11L are respectively connected to pressure gauges GA1L to GA11L; the exhaust ports EA of the second solenoid valve SV2L and the third solenoid valve SV3L are connected to a first muffler after being connected, and the exhaust ports EB of the second solenoid valve SV2L and the third solenoid valve SV3L are connected to a second muffler after being connected; the exhaust ports EA of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected to a third muffler after being connected, and the exhaust ports EB of the fourth solenoid valve SV4L to the eleventh solenoid valve SV11L are connected to a fourth muffler after being connected.

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