Tire curing bladder micro-leakage detection device

Abstract

The utility model relates to a micro-leakage detection device for a tire curing bladder. The micro-leakage detection device comprises a detection hose, a sucking pump, an inductive head and a gas detection sensor, the sucking pump and the gas detection sensor are fixedly mounted on a mounting plate positioned above a vulcanizing chamber of the tire vulcanizing machine, the inductive head is arranged in front of a gas outlet of the sucking pump, one end of the detection hose is connected with a gas inlet of the sucking pump, and the other end of the detection hose is connected with a mold locking hole of a tire vulcanizing mold; in the vulcanizing process of the vulcanizing capsule, an air sample above a mold locking hole of a mold is collected by an air pump, data is collected by an inductive head and transmitted to a gas detection sensor, and detection data of the gas detection sensor is sent to a detection master control PLC of a vulcanizing machine host in real time; micro-leakage of the vulcanizing capsule is judged according to the difference of the oxygen content change values, and an alarm signal is sent out by an alarm. The device has the advantages of being simple in structure and convenient to use, and is not affected by environmental factors such as vibration, temperature and humidity changes.

Description

Technical Field

[0001] The utility model relates to a tire vulcanization bladder micro-leakage detection device. Background Art

[0002] Tire manufacturing companies are gradually transforming towards smart factories, emphasizing the realization of an automated, intelligent, and unmanned production environment. In the tire manufacturing process, high-temperature vulcanization is one of the last key processes, in which the green tire is placed in a vulcanizing bladder filled with a medium to form the tire pattern through a tire vulcanizer.

[0003] During the tire production process, once the vulcanization bladder is punctured, damaged, aged, or broken, steam will leak, which will cause defects such as bubbles, air pockets, lack of sulfur, and delamination in the finished tires. If the bladder is not discovered and replaced in time, the vulcanized tires will produce a large number of defective products, causing serious losses. In the early stage of bladder leakage, it only manifests as a micro-leakage, which is difficult to detect in time, resulting in a large number of waste products. At present, all tire companies are seeking technical means to detect micro-leakage of vulcanization bladders.

[0004] China CN217319399U discloses a capsule leakage detection device for vulcanizing machine nitrogen filling vulcanization operation. By setting up an air pressure sensor, a temperature sensor and a humidity sensor, the pressure in a relatively closed cavity is detected, and the pressure change near the vulcanizing machine capsule is monitored to determine whether the capsule is leaking. The problem is that this detection method is easily affected by environmental factors such as vibration, temperature, humidity changes, etc., resulting in low detection accuracy and slow response. Due to the slight leakage of the capsule, the pressure change is small, so the detection effect is not good. Summary of the invention

[0005] The utility model aims to solve the above problems and provide a tire curing bladder micro-leakage detection device which is not affected by environmental factors such as vibration, temperature and humidity changes.

[0006] The basic principle of the utility model is to detect the oxygen percentage content of the air in the locking hole of the tire mold in real time. If there is no leakage in the vulcanizing bladder, the oxygen percentage content detected by the gas detection sensor is the stable value of the oxygen percentage in the air. If there is a slight leakage in the vulcanizing bladder, the water vapor in the vulcanizing bladder will escape to the outside of the mold through the gap of the tire mold and overflow through the locking hole of the tire mold. At this time, the oxygen percentage of the air at the detection point decreases, and the oxygen percentage content detected by the gas detection sensor decreases accordingly from the original stable value. The gas detection sensor sends the detection data to the detection main control PLC of the vulcanizing machine host to make a judgment on the occurrence of slight leakage in the vulcanizing bladder and send an alarm signal.

[0007] The object of the present utility model is achieved as follows. A micro-leakage detection device for a tire vulcanization bladder includes a detection hose, an air pump, an induction head, and a gas detection sensor. The air pump and the gas detection sensor are fixedly installed on a mounting plate above the vulcanization chamber of a tire vulcanizer. The induction head is placed in front of the air outlet of the air pump. One end of the detection hose is connected to the air inlet of the air pump, and the other end of the detection hose is connected to the mold clamping hole of the tire vulcanization mold. During the vulcanization process of the vulcanization bladder, an air sample above the mold clamping hole of the mold is collected by the air pump, data is collected by the induction head and transmitted to the gas detection sensor, and the detection data of the gas detection sensor is sent to the detection main control PLC of the vulcanizer host in real time. A judgment on whether the vulcanization bladder has a micro-leakage is made based on the difference in the change value of the oxygen content, and an alarm signal is sent by an alarm device.

[0008] The positive effect of the present utility model is that by extracting and detecting the change in the oxygen percentage content of the air in the mold clamping hole of the tire mold, it can monitor in real time whether there is a micro-leakage in the vulcanization bladder during the vulcanization process and feed it back to the alarm system. The structure is simple, easy to use, and not affected by environmental factors such as vibration, temperature, and humidity changes.

[0009] The following embodiments further illustrate the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0010] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0011] Figure 2 is Figure 1 a structural schematic diagram of the connection between the embodiment and the tire vulcanization mold.

[0012] In the figure, 1, detection hose; 2, air pump; 3, induction head; 4, gas detection sensor; 5, mounting plate; 6, tire vulcanization mold; 7, mold clamping hole; 8, vulcanization bladder. Embodiment

[0013] Refer to Figure 1 and Figure 2, This embodiment is a micro-leakage detection device for a tire vulcanization bladder, which includes a detection hose 1, an air pump 2, a sensing head 3, and a gas detection sensor 4; the air pump and the gas detection sensor are fixedly installed on a mounting plate 5 above the vulcanization chamber of the tire vulcanizer, the sensing head is placed in front of the air outlet of the air pump, one end of the detection hose is connected to the air inlet of the air pump, and the other end of the detection hose is connected to the mold clamping hole 7 of the tire vulcanization mold 6; during the vulcanization process of the vulcanization bladder 8, an air sample above the mold clamping hole is collected by the air pump, data is collected by the sensing head and transmitted to the gas detection sensor, and the detection data of the gas detection sensor is sent to the detection master PLC of the vulcanizer host in real time, and a judgment on micro-leakage of the vulcanization bladder is made based on the difference in the oxygen content change value, and an alarm signal is issued by the alarm.

[0014] This utility model conforms to the development trend of intelligent manufacturing, realizes 24-hour unmanned monitoring operation, and has broad application prospects and market value. By extracting and detecting the change in the oxygen percentage content of the air in the mold clamping hole of the tire mold, it can monitor in real time whether there is micro-leakage of the vulcanization bladder during the vulcanization process, and feedback it to the alarm system, so as to remind the equipment operator to replace the damaged vulcanization bladder in time, avoid the batch production of defective tires, and improve product quality.

Claims

1. A tire curing bladder micro-leakage detection device, characterized in that: It comprises a detection hose (1), an air pump (2), a sensing head (3) and a gas detection sensor (4); the air pump and the gas detection sensor are fixedly mounted on a mounting plate (5) located above a vulcanization chamber of a tire vulcanizer, the sensing head is placed in front of an air outlet of the air pump, one end of the detection hose is connected to an air inlet of the air pump, and the other end of the detection hose is connected to a locking hole (7) of a tire vulcanization mold (6); During the vulcanization process of the vulcanizing bladder (8), an air sample above the mold locking hole is collected by a vacuum pump, and the data is collected by a sensing head and transmitted to a gas detection sensor. The detection data of the gas detection sensor is sent in real time to the detection main control PLC of the vulcanizing machine host. The difference in the change value of the oxygen content is used to determine whether a micro-leakage of the vulcanizing bladder has occurred, and an alarm signal is issued by the alarm.

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