Tire mold temperature measuring device and tire mold temperature measuring method

Abstract

The present invention provides a tire mold temperature measuring device for a tire mold, wherein the tire mold includes a plurality of inner parts defining an inner cavity of the tire mold, wherein a temperature measuring device is placed in the inner cavity and includes a supporting device and at least one temperature measuring component. The supporting device is supported on at least one of the plurality of inner parts; at least one temperature measuring component is fixed on the supporting device and is used to measure the temperature of at least one of the plurality of inner parts. The present invention also provides a method for measuring the temperature of a tire mold using the above tire mold temperature measuring device. The beneficial technical effects of the present invention are: the present invention can realize the detection of the heat transfer efficiency and uniformity of the mold shell; the present invention can provide a basis for the optimization design of the mold shell structure and improve the design level.

Description

Technical Field

[0001] The invention relates to a tire mold temperature measuring device and a temperature measuring method thereof, and in particular to a temperature measuring device and a temperature measuring method thereof for detecting heat transfer efficiency and uniformity of a tire active mold shell. Background Art

[0002] In the existing tire manufacturing field, the temperature of the tire is often measured during the process of molding the tire with a tire mold. For example, a tire mold with a temperature measuring hole includes a pattern block, a side plate and a steel ring clamp, wherein one end of the side plate contacts the pattern block and the other end contacts the steel ring clamp, the side plate is provided with a temperature measuring hole, a temperature measuring line is provided in the temperature measuring hole, one end of the temperature measuring line is connected to a computer, and the other end is buried in the tire; the temperature measuring hole includes a threading hole, a connecting hole and a placement groove, the threading hole is vertically arranged on the upper surface of the side plate, the placement groove is arranged at the bottom of the side plate, one end of the connecting hole is connected to the threading hole, and the other end is connected to the placement groove; the threading hole and the connecting hole are both cylindrical holes, the diameter of the connecting hole is smaller than the diameter of the threading hole, and the placement groove is a long strip groove with a square cross section; the threading hole has a diameter of 20 mm and a depth of 15 mm, and the width and depth of the placement groove are both 15 mm; the side plate is provided with tire information, and the side plate is a circular plate, and the side plate is a steel plate or an aluminum plate; the threading hole is located in front of the center side of the side plate; and a plug corresponding to the temperature measuring hole is also included.

[0003] However, there is no mature temperature measurement method for the heat transfer efficiency and uniformity of the existing tire mold shell, which leads to the following problems:

[0004] 1. The mold's optimized design regarding heat conduction of the mold shell lacks data support, and it is impossible to detect the heat transfer efficiency and uniformity of the mold shell.

[0005] 2. It is impossible to actually detect the heat transfer speed of the mold shell for different optimization schemes, which is not conducive to the optimization and improvement of the mold shell. Summary of the invention

[0006] In order to overcome the above problems, the present invention provides a tire mold temperature measuring device for a tire mold, wherein the tire mold includes a plurality of inner parts defining an inner cavity of the tire mold, wherein the temperature measuring device is placed in the inner cavity and includes a supporting device and at least one temperature measuring component. The supporting device is supported on at least one of the plurality of inner parts; the at least one temperature measuring component is fixed on the supporting device and is used to measure the temperature of at least one of the plurality of inner parts.

[0007] Preferably, the plurality of inner components include an upper mold and a lower mold located at the upper and lower parts of the tire mold, and a circumferential mold located between the upper and lower parts of the tire mold in the circumferential direction of the tire mold.

[0008] Preferably, at least one temperature measuring component includes at least one of an upper mold temperature measuring component for measuring the upper mold temperature, a lower mold temperature measuring component for measuring the lower mold temperature, and a circumferential mold temperature measuring component for measuring the circumferential mold temperature; preferably, the circumferential mold temperature measuring component includes at least two temperature measuring units, which are symmetrically arranged in upper and lower positions corresponding to the shoulders of the tire.

[0009] Preferably, each of the temperature measuring components includes at least one temperature measuring unit and at least one connecting device for connecting the temperature measuring unit to a supporting device, and the temperature measuring unit includes a temperature sensor; preferably, the temperature sensor is a thermocouple or a thermal resistor.

[0010] Preferably, the supporting device includes a bracket and a supporting frame connected to the bracket, the temperature measuring component is fixed on the bracket, and the supporting frame is supported on at least one of the multiple inner components, so that the temperature measuring component is supported by the supporting frame, so that the temperature sensor is attached to the inner surface of the inner component during the temperature measurement process.

[0011] Preferably, the bracket includes an upper circular plate and a lower circular plate which are arranged up and down and interconnected, and the support frame includes a plurality of supports for supporting the lower circular plate on the lower mold; preferably, the upper circular plate and the lower circular plate are arranged so that after the tire mold is closed, their outer peripheral side surfaces can apply a supporting force radially outward to the circumferential mold.

[0012] Preferably, the temperature measuring unit further comprises a fixing seat having a chamber and a driving device generating a driving force. The temperature sensor is accommodated in the fixing seat and can move relative to the fixing seat, the driving device drives the temperature sensor to extend out of the fixing seat, and the driving force can be adjusted so that the end of the temperature sensor is pressed against the inner surface of the inner part with a constant force during the temperature measurement process; preferably, the connecting device comprises a connecting fixing bracket, and the connecting fixing bracket fixes the fixing seat of the temperature measuring unit to the bracket.

[0013] Preferably, the temperature measuring unit includes a blocking block fixed to the temperature sensor, the blocking block having a blocking block stop surface; the chamber of the fixing seat includes a accommodating cavity having a accommodating cavity stop surface, the accommodating cavity accommodates the blocking block, and the accommodating cavity stop surface is opposite to the blocking block stop surface; and the driving device includes an elastic mechanism accommodated in the accommodating cavity, the elastic mechanism includes a compression spring, one end of the compression spring abuts against the blocking block, so that the compression spring can bias the temperature sensor to extend and make the blocking block stop surface abut against the accommodating cavity stop surface; preferably, the driving device also includes a nut plug, the nut plug is threadedly fixed on the fixing seat in the accommodating cavity, and the position of the nut plug can be adjusted, and the other end of the spring is provided with the nut plug, so that the extension distance of the temperature sensor can be adjusted.

[0014] Preferably, the temperature sensor extends out of the fixing seat by a distance in the range of 0.5-5 mm; preferably, the distance is in the range of 2-3 mm.

[0015] Preferably, the tire mold temperature measuring device also includes a magnetic fixing device, which fixes the temperature sensor. When the magnetic fixing device is coupled to the inner surface of the inner component of the tire mold by magnetic force, the temperature sensor is abutted against the inner surface of the inner component that needs to be measured. Preferably, the magnetic fixing device is movably connected to the bracket, and preferably, one end of the magnetic fixing device away from the inner component is connected to the bracket by a connecting rope, a chain or a pin with a limiting structure.

[0016] Preferably, the tire mold is an active mold, the upper mold is configured as an upper cover of the active mold, the lower mold constitutes a base of the active mold, and the circumferential mold constitutes a slider of the active mold; or the tire mold is a two-half active mold, the upper mold is configured as an upper cover of the two halves of the active mold, the lower mold constitutes the base of the two halves of the active mold, and the circumferential mold constitutes an upper mold slider and a lower mold slider that are symmetrical in upper and lower directions of the two halves of the active mold.

[0017] Preferably, the tire mold is a two-half mold, the upper mold and the upper half of the circumferential mold constitute an integrated upper half mold of the two-half mold, and the lower mold and the lower half of the circumferential mold constitute an integrated lower half mold of the two-half mold.

[0018] The present invention also provides a method for measuring the temperature of a tire mold using the tire mold temperature measuring device according to the present invention, the method comprising the steps of:

[0019] (1) removing or not assembling components located on the inner side of at least one inner part of the tire mold whose temperature is to be measured;

[0020] (2) placing the temperature measuring device in an inner cavity defined by the plurality of inner components of the tire mold;

[0021] (3) closing the mold, with the temperature sensor of the temperature measuring device being attached to the inner surface of the inner component;

[0022] (4) heating the inner component;

[0023] (5) Temperature sensor for temperature measurement;

[0024] Preferably, the temperature is measured at the same position of different molds, or at different positions of the same mold, or at the same position of the same mold.

[0025] The present invention has the following beneficial technical effects:

[0026] 1. The invention can detect the heat transfer efficiency and uniformity of the mold shell.

[0027] 2. This invention can provide a basis for optimizing the design of the mold shell structure and improve the design level. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of a temperature measuring device for a flexible mold in a tire mold, schematically showing the tire mold and the radial half of the temperature measuring device, which includes an upper mold temperature measuring component, a lower mold temperature measuring component and a circumferential mold temperature measuring component;

[0029] Figure 2 yes Figure 1 A schematic diagram of a bracket and a support in a supporting device used in the illustrated embodiment;

[0030] Figure 3 yes Figure 1 A schematic cross-sectional view of the temperature measuring device in the embodiment shown with the tire mold removed;

[0031] Figure 4 yes Figure 3 A schematic cross-sectional view of a temperature measuring unit in the temperature measuring device shown;

[0032] Figure 5 yes Figure 4 A schematic cross-sectional view of an alternative embodiment of the temperature measurement unit embodiment shown;

[0033] Figure 6 is similar to Figure 1 A cross-sectional view of the invention, wherein the temperature measuring device according to the present invention is applied to a split two-half mold of a tire mold;

[0034] Figure 7 is similar to Figure 1A cross-sectional view of the invention, wherein the temperature measuring device according to the present invention is applied to two half active molds of a tire mold;

[0035] Figure 8 is similar to Figure 1 A cross-sectional view showing the thermocouple routing.

[0036] List of reference numerals in the figures in the technical solutions and embodiments:

[0037] 1-Tire mold, including:

[0038] 11 - Upper mold (upper cover, upper mold upper cover),

[0039] 12 - lower die (base, lower die base),

[0040] 13-Circumferential die (slider),

[0041] 131 - upper die slide,

[0042] 132 - lower die slide,

[0043] 113 - upper mold,

[0044] 123 - lower mold,

[0045] 14 - mold cavity,

[0046] 11a - Upper hot plate,

[0047] 11b - Mounting ring,

[0048] 11c - upper slide,

[0049] 12a - lower hot plate,

[0050] 12b - Base slide,

[0051] 13a - guide ring;

[0052] 2-Temperature measuring device, including multiple temperature measuring components, including:

[0053] 20a-Upper mold temperature measuring component,

[0054] 20b-lower mold temperature measuring component,

[0055] 20c-circumferential mold temperature measurement component,

[0056] - Each temperature measuring component includes:

[0057] 20 - Temperature measuring unit, including:

[0058] 21 - Temperature sensor (thermocouple),

[0059] 22 - Fixed seat, including:

[0060] 221 - chamber of the fixed seat,

[0061] 222- Chamber of the chamber,

[0062] 22a- stop surface of the accommodating chamber;

[0063] 23 - Compression spring,

[0064] 24 - Blocks, including:

[0065] 24a - Stop surface of the stopper,

[0066] 25 - Nut plug,

[0067] 30 - Support device, including:

[0068] 31 - Bracket, including:

[0069] 311-upper ring plate,

[0070] 312-lower ring plate,

[0071] 32 - support,

[0072] 40 - Connecting device, including:

[0073] 41 - Connect the fixing bracket,

[0074] 42 - connecting screw,

[0075] 41a - Magnetic fixing device,

[0076] 41b - Connecting rope. DETAILED DESCRIPTION

[0077] The present invention is further described below in conjunction with the accompanying drawings and embodiments, so as to more clearly connect the inventive principle and beneficial technical effects of the present invention.

[0078] Explanation of terminology used in this article:

[0079] Inner: Towards one side or face of a component;

[0080] Outside; away from the side or surface of the component;

[0081] Radial direction: the radial direction of the inner cavity of the tire mold;

[0082] Circumferential direction: the circumference of the inner cavity of the tire mold.

[0083] The tire mold temperature measuring device 2 according to the present invention can be used as follows: Figure 1The flexible mold shown in the figure includes an upper cover (i.e., upper mold 11), an upper slider 11c, a mounting ring 11b, an annular guide ring 13a, a slider (i.e., circumferential mold 13), a base slide 12b, a base (i.e., lower mold 12), a heating device and other parts. The heating device can be a steam chamber, an upper hot plate 11a, and a lower hot plate 12a provided on the guide ring 13a in the embodiment, or a steam chamber provided on the mold arch seat, the base, or the upper cover. Alternatively, an electric heating device or a magnetic induction heating device can also be provided outside the mold or on the mold parts. Figure 1 The parts of the flexible mold shown in the figure whose temperature is to be measured are the upper cover, the base, and the annular slider, which define the inner cavity 14 of the tire mold 1 .

[0084] The tire mold temperature measuring device 2 according to the present invention can be used as follows: Figure 6 The two-half mold shown in the figure, in which the parts whose temperature is to be measured are the upper half mold 113 and the lower half mold 123 , which define the inner cavity 14 of the tire mold 1 .

[0085] The tire mold temperature measuring device 2 according to the present invention can be used as follows: Figure 7 The two-half flexible mold shown in the figure has the parts whose temperature is to be measured including the upper cover (i.e., the upper mold upper cover), the base (i.e., the lower mold base), and the annular upper mold slider 131 and the lower mold slider 132. The upper mold upper cover, the lower mold base, the upper mold slider 131 and the lower mold slider 132 define the inner cavity 14 of the tire mold 1.

[0086] The present invention provides a tire mold temperature measuring device 2. The tire mold 1 includes a plurality of inner components defining an inner cavity 14 of the tire mold 1. According to the present invention, the temperature of the plurality of inner components needs to be measured. The plurality of inner components include an upper mold 11 and a lower mold 12 located at the upper and lower parts of the tire mold 1, and a circumferential mold 13 located between the upper and lower parts of the tire mold 1 in the circumferential direction of the tire mold 1. Figure 1 , 6 As shown in FIG. 7, in these embodiments, the upper mold 11, the lower mold 12 and the circumferential mold 13 of the plurality of inner parts constitute as follows. Figure 1 The upper cover, base, and annular slider shown in FIG. Figure 6 The upper mold half 113 and the lower mold half 123 shown in FIG. Figure 7 The upper mold cover, lower mold base, upper mold slider 131 and lower mold slider 132 are shown. Among them, for the flexible mold and the two half flexible molds, the slider is a block structure, generally 6-10 blocks in the circumferential direction. The sliders of the block structure, in the mold closing state, are supported by the outer peripheral surface of the support device 30 without contacting each other and forming a ring, and there are gaps between the blocks. When measuring temperature, the sliders of the block structure simulate the final mold closing state when the mold is actually vulcanized.

[0087] like Figure 1 , 6 As shown in FIG. 7 , the temperature measuring device is placed in the inner cavity 14 of the tire mold 1 and includes a supporting device 30 and at least one temperature measuring component. The supporting device 30 is supported on at least one of the plurality of inner components. Figure 1 , 6 In the embodiment shown in Figures 7 and 8, the support device 30 is supported on the base of the tire mold 1 or the lower half mold 123 or the lower mold base. At least one temperature measuring component is fixed on the support device 30 and is used to measure the temperature of at least one of the plurality of inner components.

[0088] The at least one temperature measuring component includes at least one of an upper mold temperature measuring component 20a for measuring the temperature of the upper mold 11, a lower mold temperature measuring component 20b for measuring the temperature of the lower mold 12, and a circumferential mold temperature measuring component 20c for measuring the temperature of the circumferential mold 13. Figure 1 Taking the illustrated embodiment as an example, the upper mold temperature measuring assembly 20a, the lower mold temperature measuring assembly 20b and the circumferential mold temperature measuring assembly 20c are respectively an upper cover temperature measuring assembly, a base temperature measuring assembly and a slider temperature measuring assembly.

[0089] Each temperature measuring assembly includes at least one temperature measuring unit 20 and at least one connecting device 40 for connecting the temperature measuring unit 20 to the supporting device 30 . Figure 4 An embodiment of a temperature measuring unit 20 is shown, and the temperature measuring unit 20 includes a temperature sensor 21. The temperature measuring unit 20 also includes: a fixing seat 22 having a cavity 221, the temperature sensor 21 is accommodated in the cavity 221 of the fixing seat 22 and can move relative to the fixing seat 22; a driving device that generates a driving force to drive the temperature sensor 21 to extend out of the fixing seat 22, and the driving force can be adjusted so that when measuring the temperature at the same position of different molds, or at different positions of the same mold, or at the same position of the same mold, the end of the temperature sensor 21 can be pressed against the inner surface of the inner parts to be measured under substantially the same force, so as to reduce the measurement error. Figure 3 As shown, the connecting device 40 includes a connecting bracket 41 and a connecting screw 42, and the connecting bracket 41 fixes the fixing seat 22 of the temperature measuring unit 20 to the bracket 31. The connecting bracket 41 is used to make the temperature sensor 21 of the temperature measuring unit 20 point to the surface of the inner part of the mold facing the inner cavity 14, and can make a part of the surface of the temperature measuring unit 20 abut against the side wall of the inner part of the mold.

[0090] Here and in the following, the mold inner parts for temperature measurement refer to the innermost parts of the mold without the cavity parts, for example, the slider after the pattern block is removed or not installed, the upper cover after the upper side plate is removed or not installed, and the base after the lower side plate is removed or not installed.

[0091] like Figure 4As shown, the temperature measuring unit 20 also includes a blocking block 24 fixed to the temperature sensor 21, and the blocking block 24 has a blocking block stop surface 24a; the chamber 221 of the fixed seat 22 includes a accommodating cavity 222 with a accommodating cavity stop surface 22a, the accommodating cavity 222 accommodates the blocking block 24, and the accommodating cavity stop surface 22a is opposite to the blocking block stop surface 24a; the driving device includes a compression spring 23 accommodated in the accommodating cavity 222, one end of the compression spring 23 is connected to the blocking block 24, and the other end of the compression spring 23 is connected to the nut plug 25, so that the spring can elastically bias the temperature sensor 21 to extend and make the blocking block stop surface 24a abut against the accommodating cavity stop surface 22a to limit the movement of the temperature sensor 21.

[0092] The nut plug 25 is threadedly fixed on the fixing seat 22 in the accommodating cavity 222, and the position of the nut plug can be adjusted. The nut plug is provided at the other end of the spring, so that the extension distance of the temperature sensor can be adjusted, thereby adjusting the bias force of the spring as needed.

[0093] like Figure 2 As shown, the support device 30 includes a bracket 31, and the bracket 31 includes an upper circular plate 311 and a lower circular plate 312 arranged and interconnected, and the upper circular plate 311 and the lower circular plate 312 are connected by a connecting plate therebetween. The support device 30 also includes a plurality of supports 32 for supporting the lower circular plate 312 on the lower mold 12, and the temperature measuring component is fixed on the bracket 31. Figure 1 As shown, a plurality of supports 32 are supported on the base, whereby all temperature measuring components are supported by the bracket 31, so that the temperature sensor 21 is pressed against the inner surfaces of the upper cover, the base and the slider during the temperature measurement process.

[0094] The upper annular plate 311 and the lower annular plate 312 are arranged so that their outer peripheral side surfaces can exert a supporting force on the circumferential mold 13 radially outward after the tire mold 1 is closed. Figure 1 As shown, when the mold is closed, the slider will move radially inward, and the bracket 31 includes an outer peripheral side surface that can apply a force against the slider in a radial direction to simulate the actual state of the mold during vulcanization. The preferred structure of the bracket 31 is two upper and lower circular plates connected by an intermediate connecting plate. Of course, it can also be a circular plate. The slider temperature measuring component is arranged between the two circular plates, or on both sides of a circular plate (when the bracket has only one circular plate). The outer peripheral side surface of the circular plate applies a force against the slider when the mold is closed. The bracket 31 is also provided with an upper cover temperature measuring component and a base temperature measuring component.

[0095] Figure 5Another structure of the temperature measuring unit 20 is shown. The tire mold temperature measuring device 2 also includes a magnetic fixing device 41a, which fixes the temperature sensor 21 to connect the temperature sensor 21 of the temperature measuring unit 20 to the bracket 31. When the magnetic fixing device 41a is coupled to the inner surface of the inner part of the tire mold 1 by magnetic force, the temperature sensor 21 is abutted against the inner surface of the inner part that needs to be measured. The magnetic fixing device 41a is movably connected to the bracket 31. Preferably, the end of the magnetic fixing device 41a away from the inner part is connected to the bracket 31 through a connecting rope 41b, a chain or a pin with a limiting structure.

[0096] Example 1 (such as Figure 1 (shown)

[0097] like Figure 3 As shown, the temperature measurement of the upper mold 11 is connected to the bracket 31 through a connecting bracket 41 and a connecting screw 42. A plurality of temperature measuring units 20 can be arranged radially and circumferentially on the bracket 31 as needed to detect the temperature of the upper cover; the number of radial and circumferential units can be selected as needed.

[0098] The temperature measuring unit 20 of the slider temperature measuring assembly is fixed to the middle part of the bracket 31 by connecting screws 42. Multiple temperature measuring units 20 can be arranged in the middle of the bracket 31 as needed to detect the temperature of different positions of the slider; preferably, there are more than two temperature measuring units 20. If there are two, they are symmetrically arranged at the position of the tire shoulder. If there are three, the middle temperature measuring unit 20 is arranged on the center plane of the slider, and the upper and lower two are symmetrically arranged at the position of the tire shoulder. When the tire mold 1 is applied to large or giant tires such as engineering tires and load-bearing tires, the number of temperature measuring units 20 of each slider can be more.

[0099] If the slider is relatively large, a supporting mechanism may be provided between the temperature measuring units 20 so that the temperature measuring units 20 can detect the temperature at different positions of the slider as required.

[0100] The temperature measuring unit 20 of the base temperature measuring assembly is connected to the bracket 31 through the connecting bracket 41 and the connecting screw 42. A plurality of temperature measuring units 20 can be arranged on the bottom surface of the bracket 31 as needed to detect the base temperature. The number of temperature measuring units 20 arranged in the radial and circumferential directions can be selected as needed.

[0101] like Figure 4 As shown, the temperature sensor 21 can be, for example, a thermocouple, a thermal resistor, etc. The temperature sensor 21 can be driven to be attached to the inner surface of the inner part of the mold after the mold is closed by a driving mechanism. The driving mechanism can be an elastic mechanism or a pneumatic mechanism. Preferably, it is an elastic mechanism, which has a simple structure.

[0102] The temperature sensor 21 is acted on by the compression spring 23, that is, one end of the compression spring 23 is fixedly connected to the temperature sensor, and the other end of the compression spring 23 is fixedly connected to the fixing seat 22, which can apply a certain preload force to the temperature sensor 21, so that the temperature measuring end of the temperature sensor 21 of the temperature measuring unit 20 extends out of the fixing seat 22 by a distance A, and the range of the distance A is 0.5-5mm. Such a distance can ensure that the temperature sensor 21 is close to the inner surface of the inner part of the mold that needs to be measured. At the same time, when measuring the temperature at the same position of different molds, or different positions of the same mold, or the same position of the same mold, it can ensure that the degree of fit between the temperature sensor 21 and the inner surface of the inner part of the mold is the same, thereby improving the accuracy of temperature measurement and facilitating comparative analysis of mold temperature values.

[0103] Temperature detection at the same position of different molds can be used for comparative analysis of vulcanization temperatures during vulcanization of different molds;

[0104] Temperature detection at different positions of the same mold can be used for comparative analysis of vulcanization temperatures at different positions of the same mold;

[0105] Temperature detection at the same position of the same mold can be used to compare and analyze the vulcanization temperature of the same mold in different states or before and after a period of use.

[0106] The fixing seat 22 is provided with a temperature measuring hole, i.e., a chamber 221 of the fixing seat 22. A blocking block 24 is fixedly provided on the temperature sensor 21. The blocking block 24 is preferably a circular ring structure, and the inner wall of the circular ring is provided with threads. The temperature sensor 21 is connected to the circular ring through the threads. The temperature sensor 21 and the blocking block 24 are arranged in the temperature measuring hole of the fixing seat 22.

[0107] The chamber 221 includes a hole for the temperature sensor 21 to pass through, and the end of the temperature sensor 21 passes through it. The accommodating chamber 222 of the chamber 221 is provided with an accommodating chamber stop surface 22a, and the blocking block 24 is attached to the accommodating chamber stop surface 22a. The accommodating chamber 222 is provided with a plug at one end away from the mold temperature measuring surface, that is, a nut plug 25, and the nut plug 25 is arranged in the accommodating chamber 222 through a thread. The compression spring 23 can be moved forward and backward by adjusting the nut plug 25 forward and backward. A hole is provided in the plug, and the diameter of the hole is larger than the diameter of the thermocouple or the connecting wire. The thermocouple or the connecting wire can pass through the hole and can move forward and backward.

[0108] The temperature sensor 21 is forced to be in close contact with the surface of the object to be measured by compressing the spring 23 and the nut plug 25. Preferably, when the temperature measuring assembly is not assembled with the mold shell, the measuring point end of the temperature sensor 21 of the temperature measuring unit 20 extends out of the fixing seat 22 by a distance A, and the dimension of the distance A is 2-3 mm. Figure 3 and Figure 4In the simulated mold closing state, the positions of the upper cover, slider, base, etc. are basically in the positions of the mold closing state with the pattern block, upper side plate, and lower side plate, and the temperature sensor 21 of the temperature measuring unit 20 is compressed. At this time, the end of the measuring point is in close contact with the measured object to ensure the accuracy of the temperature measurement data.

[0109] The temperature measuring connection line of the temperature measuring unit 20 (i.e. Figure 8 The wiring shown in the figure can be passed through the gap between the sliders, or can be passed through the position of the central water cylinder of the tire mold 1. Of course, when electrically heated, it can be passed through other positions.

[0110] Example 2 (such as Figure 7 (shown)

[0111] The tire mold 1 of the above embodiment can be as follows: Figure 7 After removing the upper and lower pattern blocks and the upper and lower side plates of the two halves of the flexible mold, a temperature measuring device similar to that in the first embodiment can be used to measure the temperature of the two halves of the flexible mold.

[0112] Example 3 (such as Figure 6 (shown)

[0113] The tire mold 1 of the above embodiment can be as follows: Figure 6 The two-half mold shown. The two-half tire mold 1 is a split two-half mold, and the pattern part is removed from the mold shell. The difference is that when the mold is closed, its shell will not move radially inward. Therefore, the circumferential outer side of the bracket 31 does not need to apply a supporting force to the mold shell. The bracket 31 can support the temperature measuring unit 20 at the mold position where the temperature measurement is required.

[0114] Or only on the inner wall of the inner part of the mold by Figure 5 The magnetic device shown can be used to fix the temperature measuring unit 20 .

[0115] A temperature measuring unit 20 is provided on the upper mold 113 at the shoulder position and / or center position of the tire pattern and at the sidewall portion for temperature measurement.

[0116] A temperature measuring unit 20 is provided on the lower half mold 123 at the shoulder position and / or center position of the tire pattern and the sidewall portion for temperature measurement.

[0117] Example 4 (such as Figure 5 (shown)

[0118] In this embodiment, there is no need to connect the fixing frame 41, and the temperature sensor 21 is directly fixed on the magnetic fixing device 41a. The temperature sensor 21 is attached to the inner surface of the inner part of the mold that needs to be measured temperature through the magnetic fixing device 41a.

[0119] The magnetic fixing device 41a can be a magnet or an electromagnet. The thermocouple is fixedly connected to the magnet or the electromagnet by welding.

[0120] In such Figure 1 The flexible mold shown, such as Figure 7 On the two halves of the flexible mold shown, the magnetic fixing device 41a is movably connected to the bracket 31, and the end of the magnetic fixing device 41a away from the mold is fixed to the bracket 31 through a movable connection mechanism such as a connecting rope 41b, a chain or a pin with a limiting structure. In this way, it is ensured that the magnetic fixing device 41a can be separated from the inner part of the mold when the temperature measurement is completed and the mold is opened.

[0121] In such Figure 6 The two halves of the mold shown do not require the above-mentioned movable connection mechanism.

[0122] Embodiment 5 (temperature measurement method)

[0123] The temperature measurement method of the tire mold temperature measurement device 2 according to the present invention comprises the following steps:

[0124] (1) removing or not assembling the components located inside at least one inner part of the tire mold 1 to be temperature measured;

[0125] (2) placing a temperature measuring device in an inner cavity 14 defined by a plurality of inner components of the tire mold 1;

[0126] (3) The mold is closed, and the temperature sensor 21 of the temperature measuring device is attached to the inner surface of the inner part;

[0127] (4) Heat the inner parts.

[0128] Preferably, the temperature measurement method further comprises the following steps:

[0129] (5) Figure 8 The figure shows the thermocouple routing method, which can use the gap in the base slide plate 12b to route the wires.

[0130] The tire mold temperature measuring device 2 and the temperature measuring method according to the present invention have the following beneficial effects:

[0131] 1. The invention can detect the heat transfer efficiency and uniformity of the mold shell.

[0132] 2. This invention can provide a basis for optimizing the design of the mold shell structure and improve the design level.

[0133] The above content describes the specific embodiments of the present invention, but those skilled in the art should understand that these are only examples, and the protection scope of the present invention is limited by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and these changes and modifications all fall within the protection scope of the present invention. The various features in the above embodiments can also be combined arbitrarily within a reasonable range according to the principles of the present invention, and such combinations also fall within the protection scope of the present invention.

Claims

1. A tire mold temperature measuring device for a tire mold, the tire mold (1) comprising a plurality of inner parts defining an inner cavity (14) of the tire mold (1), characterized in that: The temperature measuring device is placed in the inner cavity (14) and comprises: a supporting device (30), the supporting device (30) being supported on at least one of the plurality of inner members; at least one temperature measuring component, the at least one temperature measuring component being fixed on the supporting device (30) and being used to measure the temperature of at least one of the plurality of inner components, The plurality of inner components include an upper mold (11) and a lower mold (12) located at the upper and lower parts of the tire mold (1), and a circumferential mold (13) located between the upper and lower parts of the tire mold (1) in the circumferential direction of the tire mold (1). The at least one temperature measuring component comprises at least one of an upper mold temperature measuring component (20a) for measuring the temperature of the upper mold (11), a lower mold temperature measuring component (20b) for measuring the temperature of the lower mold (12), and a circumferential mold temperature measuring component (20c) for measuring the temperature of the circumferential mold (13). The circumferential mold temperature measurement assembly (20c) comprises at least two temperature measurement units (20), which are symmetrically arranged at positions corresponding to the tire shoulders. Wherein, the temperature measuring unit (20) further comprises: A fixing seat (22) having a chamber (221), wherein the temperature sensor (21) is accommodated in the fixing seat (22) and is movable relative to the fixing seat (22); A driving device generates a driving force to drive the temperature sensor (21) to extend out of the fixing seat (22), wherein the driving force is adjustable so that during the temperature measurement process, the end of the temperature sensor (21) is pressed against the inner surface of the inner component with a constant force.

2. The tire mold temperature measuring device according to claim 1, characterized in that: Each of the temperature measuring components comprises at least one temperature measuring unit (20) and at least one connecting device (40) for connecting the temperature measuring unit (20) to a supporting device (30), wherein the temperature measuring unit (20) comprises a temperature sensor (21); The temperature sensor (21) is a thermocouple or a thermal resistor.

3. The tire mold temperature measuring device according to claim 2, characterized in that: The supporting device (30) comprises a bracket (31) and a supporting frame connected to the bracket (31), the temperature measuring component is fixed on the bracket (31), and the supporting frame is supported on at least one of the plurality of inner components, whereby the temperature measuring component is supported by the supporting frame, so that the temperature sensor (21) is in contact with the inner surface of the inner component during the temperature measurement process.

4. The tire mold temperature measuring device according to claim 3, characterized in that: The support (31) comprises an upper circular plate (311) and a lower circular plate (312) which are arranged up and down and interconnected, and the support frame comprises a plurality of supports (32) for supporting the lower circular plate (312) on the lower mold (12); The upper annular plate (311) and the lower annular plate (312) are arranged so that, after the tire mold (1) is molded, their outer peripheral side surfaces can apply abutment force radially outward to the circumferential mold (13).

5. The tire mold temperature measuring device according to claim 3, characterized in that: The connecting device (40) comprises a connecting fixing frame (41), and the connecting fixing frame (41) fixes the fixing seat (22) of the temperature measuring unit (20) to the bracket (31).

6. The tire mold temperature measuring device according to claim 5, characterized in that: The temperature measuring unit (20) comprises a blocking block (24) for fixing the temperature sensor (21), and the blocking block (24) has a blocking block stop surface (24a); The chamber (221) of the fixing seat (22) comprises a receiving chamber (222) having a receiving chamber stop surface (22a), the receiving chamber (222) receiving the blocking block (24), the receiving chamber stop surface (22a) being opposite to the blocking block stop surface (24a); and The driving device comprises an elastic mechanism accommodated in the accommodating chamber (222), the elastic mechanism comprising a compression spring (23), one end of the compression spring (23) being provided with the blocking block (24), so that the compression spring (23) can bias the temperature sensor (21) to extend and make the blocking block stop surface (24a) abut against the accommodating chamber stop surface (22a); The driving device also includes a nut plug (25), which is threadedly fixed on the fixing seat (22) in the accommodating cavity (222), and the position of the nut plug can be adjusted. The other end of the spring is provided with the nut plug (25), so that the extension distance of the temperature sensor can be adjusted.

7. The tire mold temperature measuring device according to claim 5, characterized in that: The temperature sensor (21) extends out of the fixing seat (22) by a distance in the range of 0.5-5 mm.

8. The tire mold temperature measuring device according to claim 7, characterized in that: The distance is in the range of 2-3 mm.

9. The tire mold temperature measuring device according to claim 3, characterized in that: The tire mold temperature measuring device (2) further comprises a magnetic fixing device (41a), wherein the magnetic fixing device (41a) fixes the temperature sensor (21), and when the magnetic fixing device (41a) is coupled to the inner surface of the inner part of the tire mold (1) by magnetic force, the temperature sensor (21) is abutted against the inner surface of the inner part that needs to be temperature measured; The magnetic fixing device (41a) is movably connected to the bracket (31). One end of the magnetic fixing device (41a) away from the inner part is connected to the bracket (31) via a connecting rope (41b), a chain or a pin with a limiting structure.

10. The tire mold temperature measuring device according to any one of claims 1 to 9, characterized in that: The tire mold (1) is an active mold, the upper mold (11) is configured as an upper cover of the active mold, the lower mold (12) constitutes a base of the active mold, and the circumferential mold (13) constitutes a slider of the active mold; or The tire mold (1) is a two-half movable mold, the upper mold (11) is configured as an upper cover of the two-half movable mold, the lower mold (12) constitutes a base of the two-half movable mold, and the circumferential mold (13) constitutes an upper mold slider (131) and a lower mold slider (132) of the two-half movable mold that are symmetrical in upper and lower directions; or The tire mold (1) is a two-half mold, wherein the upper mold (11) and the upper half of the circumferential mold (13) constitute an integrated upper mold (113) of the two-half mold, and the lower mold (12) and the lower half of the circumferential mold (13) constitute an integrated lower mold (123) of the two-half mold.

11. A method for measuring the temperature of a tire mold using the tire mold temperature measuring device according to claim 2, characterized in that: The method comprises the steps of: (1) removing or not assembling components located on the inner side of at least one inner part of the tire mold (1) to be temperature measured; (2) placing the temperature measuring device in an inner cavity (14) defined by the plurality of inner components of the tire mold (1); (3) closing the mold, with the temperature sensor (21) of the temperature measuring device being attached to the inner surface of the inner component; (4) heating the inner component; (5) The temperature sensor (21) measures the temperature; Measure the temperature at the same position of different molds, at different positions of the same mold, or at the same position of the same mold.

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