A vulcanizing machine bladder leakage detection system and method
By using a detection system to identify the leakage of vulcanizer capsules during tire manufacturing, the economic losses caused by capsule leakage are solved, timely identification and prevention of waste production are achieved, and the accuracy and sensitivity of detection are improved.
Patent Information
- Application Number
- CN201910960425.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-10-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2039-10-10
AI Technical Summary
During the tire manufacturing process, the leakage of vulcanizer capsules leads to steam leakage, which is difficult to detect, resulting in secondary waste and economic losses, and the existing technology cannot effectively solve it.
A vulcanizer capsule leakage detection system including a mold charging device, an air intake device, an air outlet device, a temperature measuring device and an alarm device are designed. The temperature and pressure abnormality are identified through temperature measurement and pressure detection, and an alarm is issued to prevent the continued production of waste products. And provide supplementary solutions for temperature changes before and after high temperature detection.
Effectively identify and prevent leakage of vulcanizer capsules, reduce economic losses, improve detection sensitivity and accuracy, and avoid misjudgment and long-term false alarms.
Smart Images
Figure CN110722818B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tire manufacturing, and in particular to a vulcanizer bladder leakage detection system and method. Background Art
[0002] At present, the manufacturing process of semi-steel radial tires is complex, the equipment is highly automated, and the quality requirements are very strict. Among the factors that produce defective products in the production process, bladder leakage ranks first. It is a common problem in the tire industry that has not been solved for many years.
[0003] The outside of the vulcanizer bladder is surrounded by a green tire embryo. Once the bladder leaks, steam will leak between the bladder and the tire embryo, which is not easy to be discovered. Generally, 2-4 consecutive waste products will be generated, causing serious economic losses.
[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention
[0005] In order to solve the above problems, the present invention provides a vulcanizing machine bladder leakage detection system and method.
[0006] The present invention provides a vulcanizer bladder leakage detection system, comprising: a mold filling device, the mold filling device comprises a bladder and a mold; an air intake device, the air intake device is connected with the bladder; an air outlet device, the air outlet device is connected with the bladder; a temperature measuring device, the mold has an opening, and the temperature measuring device is located at the opening; an alarm device; a control device, the control device is signal-connected with the mold filling device, the air intake device, the air outlet device, the temperature measuring device and the alarm device.
[0007] Furthermore, the air inlet device and / or the air outlet device has a pressure detector, and the pressure detector is connected to the control device by signal.
[0008] Furthermore, the opening is located on the upper side of the mold filling device.
[0009] Furthermore, the temperature measuring device includes a temperature measuring resistor.
[0010] The present invention also provides a vulcanizing machine bladder leakage detection method, comprising:
[0011] The temperature at the opening of the mold filling device is detected by a temperature measuring device to obtain a first temperature parameter;
[0012] After a set interval time, the temperature at the opening of the mold filling device is detected again by the temperature measuring device to obtain a second temperature parameter;
[0013] A difference between the second temperature parameter and the first temperature parameter is obtained, the difference is compared with a preset alarm parameter, and in response to the difference being greater than the alarm parameter, the alarm device is controlled to issue a capsule leakage alarm.
[0014] Furthermore, the vulcanizer bladder leakage detection method also includes: detecting the gas pressure in the air outlet device by a pressure detector when the bladder is in an inflated state, and when it is detected that the gas pressure is lower than the standard state and exceeds a set threshold, controlling the alarm device to issue a pipeline leakage alarm.
[0015] Furthermore, the threshold value ranges from (0.3, 0.5) bar.
[0016] Furthermore, the vulcanizer bladder leakage detection method further includes: comparing the first temperature parameter or the second temperature parameter with a preset maximum temperature parameter, and in response to the first temperature parameter or the second temperature parameter being greater than the maximum temperature parameter, controlling the alarm device to issue a bladder leakage alarm.
[0017] Furthermore, the maximum temperature parameter has a value range of (40, 55)°C.
[0018] Furthermore, the interval time has a value range of (20, 50) s, and the alarm parameter has a value range of (0.8, 2) °C.
[0019] The present invention has the following beneficial effects:
[0020] 1. When the vulcanizer bladder leaks, the high-temperature gas therein leaks out and flows out from the mold opening when demolding, which will cause the temperature of the surrounding gas to rise. The present invention uses a temperature measuring device to detect the temperature at the mold opening. When the temperature rise value at the opening is detected to exceed the set alarm parameter, the alarm device will issue an alarm of bladder leakage, and production will be stopped immediately to avoid continued production of waste products and reduce economic losses.
[0021] 2. The present invention uses a pressure detector to detect the pressure of the air inlet device and the air outlet device. When the pressure is detected to be significantly reduced and exceeds the set threshold, it is determined that the air inlet device or the air outlet device has a leak, and the alarm device sends a pipeline leakage alarm to prompt the user to repair the pipeline. At the same time, it also avoids the influence of pipeline leakage on the detection of capsule leakage.
[0022] 3. The present invention also provides a maximum temperature detection scheme, which is mainly aimed at the situation where the temperature reaches the maximum value before the start of the detection. After the start of the detection, the mold fastens the embryo and the capsule, and the leaked hot air is reduced, and the temperature does not rise but drops instead. At this time, the temperature difference alarm cannot be reflected. At this time, the maximum temperature alarm can be used to make up for this loophole, so as to avoid the system being in a leakage state for a long time and unable to detect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0024] Figure 1 A structural diagram of a vulcanizing machine bladder leakage detection system is depicted;
[0025] Figure 2 A flow chart of a method for detecting leakage of a vulcanizing machine bladder is shown. DETAILED DESCRIPTION
[0026] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.
[0027] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0028] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0030] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.
[0031] The present invention provides a vulcanizing machine bladder leakage detection system, such as Figure 1 As shown, including:
[0032] A mold filling device, the mold filling device includes a capsule 1 and a mold 3; preferably, the mold 3 has a hot plate 9, which plays a role in strengthening sealing and heat preservation; an air intake device, the air intake device is connected to the capsule 1, Figure 1 In the embodiment, the air inlet device comprises a regulating valve 4, a steam valve 5 and a nitrogen valve 6, wherein the regulating valve 4 is used to control the amount of gas entering the capsule 1, the steam valve 5 is used to control the amount of steam entering the capsule 1, and the nitrogen valve 6 is used to control the amount of nitrogen entering the capsule 1; the air outlet device is connected to the capsule 1 and is Figure 1 In the embodiment, the air outlet device comprises an exhaust valve 8, which is used to discharge waste gas after use; a temperature measuring device, the mold 3 has an opening 10, and the temperature measuring device is located at the opening 10; an alarm device and a control device, and the control device is connected to the filling device, the air inlet device, the air outlet device, the temperature measuring device and the alarm device by signal.
[0033] Preferably, the opening 10 is located on the upper side of the mold 3. Since the density of the hot air released by the capsule leakage is small, the opening 10 is set on the upper side of the mold 3. When the mold is removed, the leaked hot air will be discharged upward from the opening 10, which is more convenient for temperature detection.
[0034] The present invention detects the temperature at the opening 10 through a temperature measuring device, and uses a method of measuring the temperature difference twice at an interval to obtain the difference between the two detected temperatures, and compares the difference with a preset alarm parameter. Once the difference exceeds the alarm parameter, the alarm device is controlled to send a capsule leakage alarm signal to stop the operation in time to avoid continuing to produce more waste products and reduce economic losses. As a preferred embodiment of the present invention, the temperature measuring device uses a thermal resistance temperature detector 11, which has the advantages of low cost and easy disassembly and assembly.
[0035] In one aspect of an embodiment of the present invention, Figure 1 As shown, the gas outlet device has a pressure detector 7, and the pressure detector 7 is connected to the control device by signal. The pressure detector 7 is used to detect the gas pressure in the gas outlet device. When the pressure detector 7 detects that the pressure decreases and exceeds a preset threshold, the control alarm device issues a pipeline leakage alarm, and the pipeline is repaired in time, so as to accurately locate the fault part and avoid capsule leakage alarm caused by pipeline leakage, which causes misjudgment of the fault. It can be understood that the pressure detector 7 can also be set in the gas outlet device to achieve the same technical effect.
[0036] In addition, when the temperature at the opening 10 is detected by the temperature measuring device, the present invention will also compare the detected real-time temperature with the value of the preset maximum temperature parameter. Once the detected real-time temperature is greater than the maximum temperature parameter, the alarm device will be controlled to issue a capsule leakage alarm. This situation is mainly to deal with the situation that the capsule has already leaked before the temperature detection begins. Since long-term capsule leakage will cause the area near the opening 10 to be at a high temperature for a long time, it cannot be detected by the above solution, so this method is used to supplement it.
[0037] The present invention also provides a method for detecting leakage of a vulcanizing machine bladder. Figure 2 As shown, including:
[0038] Step S100, detecting the temperature at the opening of the mold filling device by a temperature measuring device to obtain a first temperature parameter;
[0039] Step S200, after a set interval time, the temperature at the opening of the filling device is detected again by the temperature measuring device to obtain a second temperature parameter. Preferably, the interval time is in the range of (20, 50) s. The time setting is based on minimizing the detection frequency, ensuring the detection efficiency and ensuring that the capsule leakage problem can be discovered in time.
[0040] Step S300, obtain the difference between the second temperature parameter and the first temperature parameter, compare the difference with a preset alarm parameter, and in response to the difference being greater than the alarm parameter, control the alarm device to issue a capsule leakage alarm; preferably, the alarm parameter has a value range of (0.8, 2) ° C. The setting of this parameter is conducive to improving the sensitivity of the capsule leakage alarm and can promptly reflect the occurrence of capsule leakage.
[0041] When the vulcanizer bladder leaks, the high-temperature gas therein leaks out and flows out from the mold opening when demolding, which will cause the temperature of the gas around the opening to rise. This method uses a temperature measuring device to detect the temperature at the mold opening. When the temperature rise value at the opening is detected to exceed the set alarm parameter, the alarm device will issue an alarm for bladder leakage, and production will be stopped immediately to avoid continued production of waste products and reduce economic losses.
[0042] At the same time, the method also includes: detecting the gas pressure in the air outlet device when the capsule is in an inflated state by a pressure detector, and when it is detected that the gas pressure is lower than the standard state and exceeds a set threshold, controlling the alarm device to issue a pipeline leakage alarm. Preferably, the threshold value range is (0.3, 0.5) bar. The setting of this range can avoid the misjudgment of smaller values and also avoid setting it too large to fail to detect some minor pipeline leaks. The method uses a pressure detector to detect the pressure of the air inlet device and the air outlet device. When it is detected that the pressure is significantly reduced and exceeds the set threshold, it is judged that a leak has occurred in the air inlet device or the air outlet device, that is, a pipeline leakage alarm is issued by the alarm device to prompt the user to inspect the pipeline. At the same time, it also avoids the influence of pipeline leakage on the detection of capsule leakage.
[0043] Furthermore, the method further includes: comparing the first temperature parameter or the second temperature parameter with a preset maximum temperature parameter, and in response to the first temperature parameter or the second temperature parameter being greater than the maximum temperature parameter, controlling the alarm device to issue a capsule leakage alarm. Preferably, the maximum temperature parameter has a value range of (40,55)°C, and the temperature is greatly affected by the season. In the cold winter, it can be set to 40°C, and in the hot summer, it can be set to 55°C. The above is a maximum temperature detection scheme, which is mainly aimed at the temperature reaching the maximum value before the start of the detection. After the start of the detection, the mold fastens the embryo and the capsule, and the leaked hot air is reduced. The temperature does not rise but drops instead. At this time, the temperature difference alarm cannot be reflected. At this time, the maximum temperature alarm can be used to make up for this loophole to prevent the system from being in a leakage state for a long time and unable to detect.
[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A method for detecting leakage of a vulcanizing machine bladder, characterized in that: The curing machine bladder leakage detection system used in this detection method includes: A mold filling device, the mold filling device comprising a capsule and a mold; an air intake device, the air intake device being in communication with the capsule; An air outlet device, the air outlet device is connected to the capsule; A temperature measuring device, the mold has an opening, and the temperature measuring device is located at the opening; Alarm device; A control device, wherein the control device is connected to the mold filling device, the air inlet device, the air outlet device, the temperature measuring device and the alarm device by signal; The air inlet device and / or the air outlet device has a pressure detector, and the pressure detector is connected to the control device by signal; The opening is located on the upper side of the mold filling device; Detection methods include: The temperature at the opening of the mold filling device is detected by a temperature measuring device to obtain a first temperature parameter; After a set interval time, the temperature at the opening of the mold filling device is detected again by the temperature measuring device to obtain a second temperature parameter; Obtaining a difference between the second temperature parameter and the first temperature parameter, comparing the difference with a preset alarm parameter, and in response to the difference being greater than the alarm parameter, controlling the alarm device to issue a capsule leakage alarm; The interval time range is (20, 50) s, and the alarm parameter range is (0.8, 2) °C; Also includes: The pressure detector detects the gas pressure in the gas outlet device when the capsule is in an inflated state, and when it is detected that the gas pressure is lower than the standard state and exceeds a set threshold, the alarm device is controlled to issue a pipeline leakage alarm; The method further comprises: comparing the first temperature parameter or the second temperature parameter with a preset maximum temperature parameter, and in response to the first temperature parameter or the second temperature parameter being greater than the maximum temperature parameter, controlling the alarm device to issue a capsule leakage alarm; The maximum temperature parameter has a value range of (40,55)°C.
2. A vulcanizing machine bladder leakage detection method as claimed in claim 1, characterized in that: The threshold value range is (0.3, 0.5) bar.
3. A vulcanizing machine bladder leakage detection method as claimed in claim 1, characterized in that: The temperature measuring device comprises a temperature measuring resistor.