Tire vulcanization heating system

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By using a combination of a power adjustment unit and an intermediate relay unit in the tire vulcanization heating system, dual precise control of the tire vulcanization temperature is achieved, solving the problems of high energy consumption of traditional heating methods and poor temperature uniformity of electric heating methods, ensuring Improvement of tire vulcanization quality and cost savings.

CN222372338UActive Publication Date: 2025-01-21HIMILE MECHANICAL SCI & TECH (SHANDONG) CO LTD

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Patent Information

Application Number: CN202323539317.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2023-12-25
Publication Date: 2025-01-21
Estimated Expiration: 2033-12-25

AI Technical Summary

Technical Problem

The traditional tire vulcanization heating method has the problems of high energy consumption and low energy utilization rate. The electric heating method has poor temperature uniformity and difficult control, which makes it difficult to ensure the quality of tire vulcanization.

Method used

A power adjustment unit and an intermediate relay unit are used to achieve dual precise control of temperature, and multiple heating units are uniformly regulated through the control unit to ensure the stability of the tire vulcanization temperature.

Benefits of technology

It ensures the quality of tire vulcanization and reduces costs, and through the design of a shared control unit and intermediate relay unit, costs are saved.

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Patent Text Reader

Abstract

The utility model discloses a tire vulcanization heating system which comprises heating units, the heating units are connected with control units, one control unit can control a plurality of heating units, the control units are connected with a master control unit, and one master control unit can control a plurality of control units. The control unit comprises a temperature measuring unit, an arithmetic unit, a communication unit, a power adjusting unit and an intermediate relay unit, the heating unit is connected with an external power supply, the external power supply is connected with the heating unit through the power adjusting unit and the intermediate relay unit, and the arithmetic unit is connected with the power adjusting unit, the temperature measuring unit, the communication unit and the intermediate relay unit. The communication unit is connected with the master control unit, and the temperature measurement unit is connected with a temperature detection device, and has the following advantages that the dual accurate control of the temperature is realized through the power regulation unit and the intermediate relay unit, and the tire vulcanization quality is ensured.

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Description

Technical Field

[0001] The utility model discloses a tire vulcanization heating system, and relates to the technical field of tire vulcanization, in particular to a tire vulcanization heating system and a control method. Background Art

[0002] Tire vulcanization is an important process in the tire production process. This process requires a high temperature and high pressure environment for the tire blank molding. Traditional heating methods mostly use steam heating, which has a relatively uniform heating temperature, but has high energy consumption and low energy utilization, and is not suitable for the needs of green development; while electric heating has high energy utilization and is more environmentally friendly and energy-saving, but electric heating has large fluctuations, is difficult to control, has poor temperature uniformity, and is difficult to guarantee the quality of tire vulcanization. This has become the main factor restricting the application of electric heating in the field of tire vulcanization. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tire vulcanization heating system in view of the above shortcomings, which realizes dual precise control of temperature through a power adjustment unit and an intermediate relay unit, thereby ensuring the quality of tire vulcanization, and multiple heating units can share a set of control units, and the temperature of each heating unit can be adjusted through the intermediate relay unit, thereby greatly saving costs.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A tire vulcanization heating system comprises a heating unit, the heating unit is connected to a control unit, one control unit can control a plurality of heating units, the control unit is connected to a master control unit, one master control unit can control a plurality of control units, the control unit is used to regulate the heating unit; the master control unit is used to control the tire mold cavity surface to gradually reach a target vulcanization temperature;

[0006] The control unit includes a temperature measuring unit, a calculation unit, a communication unit, a power regulating unit and an intermediate relay unit. The heating unit is connected to an external power supply, and the external power supply is connected to the heating unit via the power regulating unit and the intermediate relay unit. The calculation unit is connected to the power regulating unit, the temperature measuring unit, the communication unit and the intermediate relay unit. The communication unit is connected to the main control unit, and the temperature measuring unit is connected to a temperature detection device.

[0007] Furthermore, the power regulating unit includes a rectifier unit, a voltage regulating unit and an inverter unit, and the external power supply is connected to the intermediate relay unit after passing through the rectifier unit, the voltage regulating unit and the inverter unit in sequence, and the intermediate relay unit is further connected to the heating unit;

[0008] The rectifying unit is connected to an external power source and acts as a rectifier to convert external alternating current of the external power source into direct current;

[0009] The voltage regulating unit is connected to the inverter unit and the computing unit, and is used to regulate the voltage;

[0010] The inverter unit is connected to the intermediate relay unit to convert direct current into high-frequency alternating current to achieve induction heating.

[0011] Furthermore, the tire vulcanization heating system also includes a tire mold, which includes a mold shell component and a cavity component. At least one mold shell component serves as a heating component, on which at least one heating unit is arranged, and a corresponding cavity component is installed inside the mold shell component.

[0012] Furthermore, the tire mold is a flexible mold, the mold shell assembly includes a guide ring and a base, and the cavity assembly includes a tire side plate and a tread mold;

[0013] A plurality of heating units are arranged on the outer wall of the guide ring, at least one heating position temperature detection device is arranged corresponding to each heating unit, at least one connection surface temperature detection device is arranged near the connection surface between the guide ring and the tread mold, and at least one cavity surface temperature detection device is arranged at the cavity surface of the tread mold.

[0014] Furthermore, the heating position temperature detection device, the connection surface temperature detection device, and the cavity surface temperature detection device are connected to the temperature measuring unit in the corresponding control unit, or are connected to one of the temperature measuring units in multiple control units, that is, multiple control units share one temperature measuring unit, and information is shared and transmitted through the main control unit.

[0015] Furthermore, the heating position temperature detection device is set at a position 5-10mm away from the heating unit as a temperature control point;

[0016] The connection surface temperature detection device is arranged at a position 5-10 mm away from the connection surface as a connection surface temperature verification point;

[0017] The cavity surface temperature detection device is set at a position 5-10mm away from the cavity surface as a cavity surface temperature verification point.

[0018] Furthermore, the number of the heating position temperature detection devices is 1-6. When there are multiple heating position temperature detection devices corresponding to the heating unit, the average value is taken as the temperature control point temperature;

[0019] The number of the connection surface temperature detection devices is 1-6. When there are multiple connection surface temperature detection devices on the connection surface, the average value is taken as the temperature check point temperature of the heating position;

[0020] The number of the cavity surface temperature detection devices is 1-6. When there are multiple cavity surface temperature detection devices close to the tread model cavity surface, the average value is taken as the connection surface temperature verification point temperature.

[0021] Furthermore, it also includes an upper hot plate and a lower hot plate, a tire mold is arranged between the upper hot plate and the lower hot plate, and at least one heating unit is arranged on the upper hot plate and the lower hot plate.

[0022] Furthermore, at least one connection surface temperature detection device is arranged near the connection surface between the upper hot plate 8, the lower hot plate and the tread mold or inside the tread mold, and / or at least one cavity surface temperature detection device is arranged near the sidewall cavity surface.

[0023] Furthermore, the heating temperatures of the upper heating plate and the lower heating plate and the heating temperature of the tire mold can be independently controlled to achieve zoned heating of the sidewall and the tread.

[0024] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0025] The power regulating unit and the intermediate relay unit are used to achieve dual precise temperature control, which ensures the quality of tire vulcanization. Multiple heating units share a set of control units, and the temperature of each heating unit is adjusted through the intermediate relay unit, which greatly saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0027] Figure 1 It is a structural schematic diagram of the heating system in the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the power regulation unit in the utility model;

[0029] Figures 3 to 5 This is a schematic diagram of the temperature detection device in the present utility model being arranged in a mold;

[0030] Figure 6 A flow chart for regulating the heating system through the cavity surface temperature calibration point. DETAILED DESCRIPTION

[0031] Embodiment 1, as Figure 1 As shown, a tire vulcanization heating system includes a heating unit, the heating unit is connected to a control unit, one control unit can control several heating units, the control unit is connected to a master control unit, one master control unit can control several control units.

[0032] The control unit is used to regulate the heating unit; the master control unit is used to control the tire mold cavity surface to gradually reach the target vulcanization temperature.

[0033] The control unit includes a temperature measuring unit, an operation unit, a communication unit, a power regulating unit and an intermediate relay unit. The heating unit is connected to an external power supply, and the external power supply is connected to the heating unit via the power regulating unit and the intermediate relay unit. The operation unit is respectively connected to the power regulating unit, the temperature measuring unit, the communication unit and the intermediate relay unit. The communication unit is connected to the main control unit. The temperature measuring unit is connected to a temperature detection device, and the temperature detection device is used to detect the temperature of the set position and feed back to the control unit.

[0034] like Figure 2 As shown, the power regulating unit includes a rectifier unit, a voltage regulating unit and an inverter unit. The external power supply is connected to the intermediate relay unit after passing through the rectifier unit, the voltage regulating unit and the inverter unit in sequence, and the intermediate relay unit is further connected to the heating unit.

[0035] The rectifier unit is connected to an external power source and acts as a rectifier to convert the external AC power of the external power source into DC power. The voltage regulating unit is connected to the inverter unit and the operation unit to adjust the voltage, thereby adjusting the power of the heating unit and adapting to the power change caused by the on and off of the intermediate relay unit. The inverter unit is connected to the intermediate relay unit to convert the DC power into high-frequency AC power to achieve induction heating. The intermediate relay unit can be selected as an electromagnetic relay, a solid-state relay, or an optical coupler relay, etc., which has components that can execute corresponding commands through AC or DC and connected to the control system. The control unit controls the on and off of the intermediate relay unit and opens and closes it in time according to the requirements of the control unit.

[0036] The computing unit may use a temperature controller, a PLC, a single-chip microcomputer, etc.

[0037] The temperature measuring unit is a digital-to-analog conversion module, a thermal resistor or a thermocouple or other element that can measure temperature. The temperature measuring unit measures the temperature at its location and feeds back to the calculation unit. The calculation unit calculates the difference between the temperature and the set value and determines the execution unit to control the heating time and power so that the target area is constant within a certain range of the set value.

[0038] like Figure 3As shown in Figure 4, the tire vulcanization heating system also includes a tire mold, and the tire mold includes a mold shell assembly and a cavity assembly. The cavity assembly is arranged on the inner side of the mold shell assembly, and the cavity assembly defines a chamber for vulcanizing the tire. At least one mold shell assembly serves as a heating component, on which at least one heating unit is arranged, and a corresponding cavity component is installed on the inner side of the mold shell assembly. For example, the tire mold is a flexible mold, and the mold shell assembly includes a guide ring 1 and a base 2, and the cavity assembly includes a side plate 3 and a tread mold 4. A plurality of heating units are arranged on the outer wall of the guide ring 1, and at least one heating position temperature detection device 5 is arranged corresponding to each heating unit, at least one connection surface temperature detection device 6 is arranged near the connection surface between the guide ring 1 and the tread mold 4, and at least one cavity surface temperature detection device 7 is arranged at the cavity surface of the tread mold 4.

[0039] The heating position temperature detection device 5, the connection surface temperature detection device 6, and the cavity surface temperature detection device 7 are connected to the temperature measuring unit in the corresponding control unit, or are connected to one of the temperature measuring units in multiple control units, that is, multiple control units share one temperature measuring unit, and share and transmit information through the main control unit.

[0040] The heating position temperature detection device 5 is arranged near the heating unit, preferably 5-10mm away from the heating unit, as a temperature control point; the connection surface temperature detection device 6 is arranged near the connection surface of the mold shell assembly and the cavity assembly, preferably 5-10mm away from the connection surface, as a connection surface temperature verification point; the cavity surface temperature detection device 7 is arranged near the cavity surface position of the cavity assembly, preferably 5-10mm away from the cavity surface, as a cavity surface temperature verification point; the temperature measuring unit detects the temperature control point, the connection surface temperature verification point, and the cavity surface temperature verification point, and the power of the heating unit is adjusted according to the set logic through calculation and judgment by the calculation unit and control by the general control unit.

[0041] like Figure 1 As shown in Figure 1, multiple heating units can be controlled synchronously using temperature checkpoints to achieve uniform heating. Figure 2 As shown, some temperature check points are used to independently control the corresponding parts (one or more) of the heating units to achieve zoned heating.

[0042] Specifically, the number of the heating position temperature detection devices 5 corresponding to the heating unit is 1-6. When there are multiple heating position temperature detection devices 5 corresponding to the heating unit, the average thereof is taken as the temperature control point temperature; the number of the connecting surface temperature detection devices 6 corresponding to the connecting surface position is 1-6. When there are multiple connecting surface temperature detection devices 6 at the connecting surface, the average thereof is taken as the heating position temperature verification point temperature; the number of the cavity surface temperature detection devices 7 corresponding to the cavity component is 1-6. When there are multiple cavity surface temperature detection devices 7 close to the tread model cavity surface, the average thereof is taken as the connecting surface temperature verification point temperature.

[0043] Example 2

[0044] like Figure 5 As shown, the tire vulcanization heating system provided in this embodiment also includes an upper hot plate 8 and a lower hot plate 9, a tire mold is arranged between the upper hot plate 8 and the lower hot plate 9, at least one heating unit is arranged on the upper hot plate 8 and the lower hot plate 9, at least one heating position temperature detection device 5 is arranged near each heating unit, at least one connection surface temperature detection device 6 is arranged near the connection surface between the upper hot plate, the lower hot plate and the tread mold / inside the tread mold (if the tread mold is arranged separately, at the connection surface between the base plate and the tire side plate 3), and / or, at least one cavity surface temperature detection device 7 is arranged near the side wall cavity surface. The heating method and resistance heating method described in Example 1 can be adopted, and the control method is as described therein.

[0045] The temperature checkpoints can be used to synchronously control multiple heating units to achieve uniform heating of the tire sidewalls. Some temperature checkpoints can also be used to independently control the corresponding parts (one or more) of the heating units to achieve zoned heating of the tire sidewalls.

[0046] Furthermore, the heating temperatures of the upper heating plate 8 and the lower heating plate 9 and the heating temperature of the tire mold can be independently controlled to achieve zoned heating of the sidewall and the tread.

[0047] Specific systems for temperature regulation, such as Figure 6 As shown, the control system monitors the temperature of each area in real time and compares it with the preset temperature in real time. When the difference is greater than 5-20℃, all coils under the controller are energized for heating, and the relevant electrical parameters are adjusted to adapt to the changes in inherent parameters caused by the parallel or series connection of the coils. When the temperature of a certain area reaches the set temperature, the area enters the self-regulation stage, and the intermediate relay unit is turned on or off according to the control system instructions to achieve the opening and closing of the main circuit. In particular, when a coil is connected to or disconnected from the main circuit, the control system can choose to wait for the current in the circuit to be 0 to control the relay to operate, so as to reduce the sparks generated when disconnecting from the main circuit and avoid the loss of the relay.

[0048] When the temperature of a part of the area reaches the preset temperature, this part of the area enters the temperature control adjustment, and the intermediate relay unit is connected to the main circuit in turn according to the needs, controls the heating unit to turn on and off, and heats the area to achieve a relatively uniform temperature in this part of the area; while for the area where the temperature does not reach the preset temperature, the intermediate relay control unit remains connected to heat the area, and the power can be adjusted through the power adjustment unit. The power adjustment unit and the intermediate relay control unit work together to achieve temperature adjustment so that the temperature of each area reaches the preset temperature.

[0049] When the temperature of each area reaches the preset temperature, the intermediate relay unit is connected to the main circuit in turn to heat the area as needed, and finally the temperature is uniform and reaches the preset target temperature.

[0050] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A tire vulcanization heating system, characterized in that: It includes a heating unit, the heating unit is connected to a control unit, one control unit can control a plurality of heating units, the control unit is connected to a master control unit, one master control unit can control a plurality of control units, the control unit is used to regulate the heating unit; the master control unit is used to control the cavity surface of the tire mold to gradually reach the target vulcanization temperature; The control unit includes a temperature measuring unit, a calculation unit, a communication unit, a power regulating unit and an intermediate relay unit. The heating unit is connected to an external power supply, and the external power supply is connected to the heating unit via the power regulating unit and the intermediate relay unit. The calculation unit is connected to the power regulating unit, the temperature measuring unit, the communication unit and the intermediate relay unit. The communication unit is connected to the main control unit, and the temperature measuring unit is connected to a temperature detection device.

2. A tire vulcanization heating system according to claim 1, characterized in that: The power regulating unit includes a rectifier unit, a voltage regulating unit and an inverter unit. The external power source is connected to the intermediate relay unit after passing through the rectifier unit, the voltage regulating unit and the inverter unit in sequence, and the intermediate relay unit is further connected to the heating unit. The rectifying unit is connected to an external power source and acts as a rectifier to convert external alternating current of the external power source into direct current; The voltage regulating unit is connected to the inverter unit and the computing unit, and is used to regulate the voltage; The inverter unit is connected to the intermediate relay unit to convert direct current into high-frequency alternating current to achieve induction heating.

3. A tire vulcanization heating system according to claim 1, characterized in that: The tire vulcanization heating system also includes a tire mold, which includes a mold shell component and a cavity component. At least one mold shell component is used as a heating component, on which at least one heating unit is arranged, and a corresponding cavity component is installed inside the mold shell component.

4. A tire vulcanization heating system as claimed in claim 3, characterized in that: The tire mold is a flexible mold, the mold shell component includes a guide ring (1) and a base (2), and the cavity component includes a tire side plate (3) and a tread mold (4); The outer wall of the guide ring (1) is provided with a plurality of heating units, each heating unit is provided with at least one heating position temperature detection device (5), at least one connection surface temperature detection device (6) is provided near the connection surface between the guide ring (1) and the tread mold (4), and at least one cavity surface temperature detection device (7) is provided at the cavity surface of the tread mold (4).

5. A tire vulcanization heating system as claimed in claim 4, characterized in that: The heating position temperature detection device (5), the connection surface temperature detection device (6), and the cavity surface temperature detection device (7) are connected to the temperature measurement unit in the corresponding control unit, or are connected to one of the temperature measurement units in the multiple control units, and information is shared and transmitted through the master control unit.

6. A tire vulcanization heating system as claimed in claim 4, characterized in that: The heating position temperature detection device (5) is set at a position 5-10 mm away from the heating unit as a temperature control point; The connection surface temperature detection device (6) is arranged at a position 5-10 mm away from the connection surface as a connection surface temperature verification point; The cavity surface temperature detection device (7) is arranged at a position 5-10 mm away from the cavity surface as a cavity surface temperature verification point.

7. A tire vulcanization heating system as claimed in claim 4, characterized in that: The number of the heating position temperature detection devices (5) is 1 to 6. When there are multiple heating position temperature detection devices (5) corresponding to the heating unit, the average value is taken as the temperature control point temperature; The number of the connection surface temperature detection devices (6) is 1-6. When there are multiple connection surface temperature detection devices (6) on the connection surface, the average value is taken as the temperature check point temperature of the heating position; The number of the cavity surface temperature detection devices (7) is 1-6. When there are multiple cavity surface temperature detection devices (7) close to the tread model cavity surface, the average value is taken as the connection surface temperature check point temperature.

8. A tire vulcanization heating system as claimed in claim 4, characterized in that: It also comprises an upper hot plate (8) and a lower hot plate (9), a tire mold is arranged between the upper hot plate (8) and the lower hot plate (9), and at least one heating unit is arranged on the upper hot plate (8) and the lower hot plate (9).

9. A tire vulcanization heating system as claimed in claim 8, characterized in that: At least one connection surface temperature detection device (6) is arranged near the connection surface between the upper hot plate (8), the lower hot plate (9) and the tread mold (4) or inside the tread mold (4), and / or at least one cavity surface temperature detection device (7) is arranged near the sidewall cavity surface.

10. A tire vulcanization heating system according to claim 8, characterized in that: The heating temperatures of the upper heating plate (8) and the lower heating plate (9) and the heating temperature of the tire mold can be independently controlled to achieve zoned heating of the sidewall and the tread.