Pipeline device for improving passenger car tire vulcanization mold opening efficiency

Abstract

The utility model relates to a pipeline device for improving passenger car tire vulcanization mold opening efficiency, and belongs to the field of tire vulcanization equipment. A capsule is arranged, a gas inlet of the capsule is connected with a sizing nitrogen valve, a gas outlet of the capsule is connected with one end of a pressure retaining valve through a pressure transmitter, and the other end of the pressure retaining valve is connected with a nitrogen recovery valve, a main discharge valve and a vacuumizing valve. Certain gas pressure is kept in the capsule during mold opening, so that the tire is prevented from being adhered to the upper side plate, the upper tire side wall is prevented from being concave and deformed, the abnormal condition caused by mold opening is solved, the mold is opened when the pressure in the capsule does not reach a negative value, the vulcanizing time is saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vulcanization equipment field, in detail is a kind of pipe device of improving passenger car tire vulcanization mold opening efficiency. BACKGROUND

[0002] It is known that the present most passenger car tire manufacturers adopt saturated steam and nitrogen gas these two vulcanization mediums to vulcanize tire.The process of tire vulcanization is that tire blank is placed in vulcanization mould, tire blank is equipped with vulcanization capsule inside, and vulcanization medium (saturated steam, high-pressure nitrogen gas) is filled in capsule.In the process of entering mold opening stage after positive vulcanization, nitrogen gas inside capsule is recovered to power station first, and is used again after processing;Secondly, residual gas in capsule is exhausted;Finally, capsule is vacuumized by vacuum pump, and tire is separated from capsule to facilitate tire taking out, and the action of exhausting in the whole mold opening cycle will continue until next tire blank loading;In theory, capsule can be opened and tire can be unloaded after the pressure inside capsule reaches the safety threshold of vulcanization machine.In actual production process, after positive vulcanization, the pressure inside capsule reaches negative value after entering vacuumizing stage, and capsule will automatically shrink into multi-petal butterfly shape, and the following two abnormal conditions will occur when mold opening, the first condition is that tire will be pasted on upper side plate, and will rise with the rising of upper side plate, and at this time, if vulcanization worker does not find and take out tire in time, double-tire will be caused due to automatic next tire blank loading vulcanization;The second condition is that tire is pasted on lower side plate, and some high-width-ratio tires will be deformed due to high temperature and gravity of tire, and tire cannot be contacted by tire unloading manipulator, and tire needs to be unloaded manually from vulcanization machine, causing production efficiency waste. SUMMARY

[0003] In order to overcome the deficiencies of prior art, the utility model provides a kind of pipe device of improving passenger car tire vulcanization mold opening efficiency, ensure that the pressure inside capsule is in the safety threshold range, so that capsule is in the inflation state.

[0004] The utility model discloses the technical scheme that the technical problem is solved is: a kind of pipe device of improving passenger car tire vulcanization mold opening efficiency, is equipped with capsule, its characterized in that, the gas inlet of capsule is connected into shaping nitrogen valve, the gas outlet of capsule is connected with the one end of pressure retaining valve by pressure transmitter, and the other end of pressure retaining valve is connected with nitrogen recovery valve, main exhaust valve and vacuumizing valve.

[0005] The utility model has the beneficial effects that, when mold opening, the certain gas pressure in capsule is kept, so that tire is not pasted on upper side plate, and upper tire side is not deformed, so that abnormal condition caused by mold opening is solved, and the pressure in capsule does not reach negative value when mold opening, so that vulcanization time is saved and production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] The utility model is further illustrated below in connection with the drawings and examples.

[0007] Figure 1 The principle diagram of the utility model.

[0008] Figure 2 The utility model is a mold opening vulcanization parameter diagram.

[0009] In the figure, the utility model is provided with a capsule 1, the air inlet of the capsule 1 is connected to a shaping nitrogen valve 6, the air outlet of the capsule 1 is connected to one end of a pressure retaining valve 2 through a pressure transmitter 7, the other end of the pressure retaining valve 2 is connected to a nitrogen recovery valve 3, a main exhaust valve 4 and a vacuum valve 5. CONCRETE EMBODIMENT

[0010] In the figure, the utility model is provided with a capsule 1, the air inlet of the capsule 1 is connected to a shaping nitrogen valve 6, the air outlet of the capsule 1 is connected to one end of a pressure retaining valve 2 through a pressure transmitter 7, the other end of the pressure retaining valve 2 is connected to a nitrogen recovery valve 3, a main exhaust valve 4 and a vacuum valve 5.

[0011] The utility model takes any size passenger car tire as an example for illustration, after the vulcanization machine is positively vulcanized, enters the mold opening early stage: as shown in Figure 1 、 Figure 2

[0012] First step: the pressure retaining valve 2 is opened, the vacuum valve 5 is closed, the nitrogen recovery valve 3 is opened, the main exhaust valve 4 is closed, the shaping nitrogen valve 6 is closed, and the time is 12 seconds;

[0013] Second step: the pressure retaining valve 2 is opened, the vacuum valve 5 is closed, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is opened, the shaping nitrogen valve 6 is closed, and the time is 8 seconds;

[0014] Third step: the pressure retaining valve 2 is opened, the vacuum valve 5 is opened, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is closed, the shaping nitrogen valve 6 is closed, and the time is according to the actual pressure transmitter 7 detection pressure reaches the safety threshold value;

[0015] Fourth step: if the pressure transmitter 7 detection pressure reaches the safety threshold value, then the pressure retaining valve 2 is closed, the vacuum valve 5 is closed, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is closed, the shaping nitrogen valve 6 is closed, and enters the sixth step mold opening action;

[0016] ​Fifth step: in the process of opening mold, if the pressure detected by the pressure transmitter 7 does not reach the safety threshold, the pressure maintaining valve 2 is closed, the vacuum extraction valve 5 is closed, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is closed, and the shaping nitrogen inlet valve 6 is opened, so that the pressure inside the capsule 1 is maintained within the safety threshold range; if the pressure detected by the pressure transmitter 7 is higher than the safety threshold, the pressure maintaining valve 2 is opened, the vacuum extraction valve 5 is opened, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is closed, and the shaping nitrogen inlet valve 6 is closed, so that the pressure inside the capsule 1 is maintained within the safety threshold range;

[0017] Sixth step: after the mold is opened to the position, the tire unloading manipulator turns in and descends to grab the tire, and the capsule upper ring descends at the same time;

[0018] Seventh step: the pressure maintaining valve 2 is opened, the vacuum extraction valve 5 is opened, the nitrogen recovery valve 3 is closed, the main exhaust valve 4 is closed, and the shaping nitrogen inlet valve 6 is closed;

[0019] Eighth step: the states of all the valves in the seventh step remain unchanged, when the pressure detected by the pressure transmitter 7 is less than or equal to zero, the tire unloading manipulator rises, and at the same time, the capsule upper ring also rises to the position and stops, then the tire unloading manipulator continues to rise to the position, and then turns out to unload the tire;

[0020] The utility model provides a kind of pipe device for improving the vulcanization mold opening efficiency of passenger car tire, and the technical scheme for solving its technical problems is: one is to install pressure transmitter on vulcanizing machine return pipe and connect to control panel;Two are set in man-machine interface, mold opening action: the pressure inside capsule reaches certain safety threshold after opening mold, pressure maintaining valve is closed, so that the pressure inside capsule is maintained within the safety threshold range;If the pressure reaches the safety threshold in the process of opening mold, it is supplemented with shaping nitrogen;More than safety threshold then pressure maintaining valve opens to extract vacuum, ensure the pressure inside capsule in safety threshold range, purpose makes capsule in swelling state, has certain restraint force to tire.Open mold to the position, tire unloading manipulator turns in, descends to grab tire, and capsule upper ring descends a certain height and keeps action unchanged at the same time, then pressure maintaining valve opens, continues to extract vacuum so that the pressure inside capsule reaches negative value, then tire unloading manipulator rises, and capsule upper ring also rises to the position along with, tire unloading manipulator continues to rise to the position, and then turns out to unload tire.

Claims

1. A piping device for improving the vulcanization mold opening efficiency of passenger car tires, comprising a bladder, characterized in that, The air inlet of the capsule is connected to a nitrogen valve, and the air outlet of the capsule is connected to one end of a pressure maintaining valve through a pressure transmitter, and the other end of the pressure maintaining valve is connected to a nitrogen recovery valve, a main exhaust valve and a vacuum pump valve.

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