A tire vulcanizing machine heating plate and vulcanizing machine

Abstract

The application discloses a tire vulcanizing machine heating plate and a vulcanizing machine, and belongs to the technical field of tire vulcanizing equipment. The heating plate comprises a plate body and heating blocks. The number of the heating blocks is at least two. The at least two heating blocks are in a fan-shaped structure with a central angle of theta, and are detachably fixedly connected in mounting grooves of the plate body for heat conduction. The heating block comprises a substrate made of an aluminum alloy material, and the substrate is provided with a heating element. The heating element and the substrate are integrated into a heating block structure. The heating block structure is detachably connected to the heating plate body. When the heating element has a problem during use, the heating block structure can be directly replaced, thereby saving maintenance time and being good in repeatability. Moreover, the heating block adopts the substrate made of the aluminum alloy material, so that the heat transfer efficiency between the heating element and the substrate is increased by more than one time, and the temperature uniformity of the heating plate is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of tire vulcanization equipment, in particular to a tire vulcanizing machine heating plate and a vulcanizing machine. BACKGROUND

[0002] Tire vulcanization is an important process in tire production and processing, and a tire vulcanizing machine needs to be used in the process. In the tire vulcanization process, the vulcanizing machine provides a high-temperature and high-pressure environment for the tire blank. In the existing tire vulcanization process, external temperature heating is usually achieved by continuously and uninterruptedly feeding high-temperature steam into a hot plate and a mold cover. However, the heat carried in the steam cannot be fully utilized (a large amount of heat is still contained in the discharged water and steam), the energy utilization rate is low, and the energy consumption is large. Therefore, some tire manufacturers have begun to use electric heating instead of the original steam heating.

[0003] The electric heating mode refers to embedding heating elements such as heating pipes and induction heating wires into the heating plate of the vulcanizing machine to achieve electric heating. However, when the heating elements are damaged, the heating elements need to be disassembled and then re-embedded. Since the heating elements are often embedded in the slots of the heating plate in a relatively complex arrangement, disassembling and replacing them is very complex and time-consuming. Moreover, after re-embedding, gaps may occur between the replaced heating elements and the plate body due to matching problems, which may lead to uneven heat transfer during subsequent use and affect the heating effect. Therefore, it is an urgent problem to design a new type of vulcanizing machine heating plate that can achieve quick disassembly and replacement of heating elements while ensuring the heating effect after replacement. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a tire vulcanizing machine heating plate and a vulcanizing machine, which can solve the problems of complex replacement operation and poor repeatability after replacement of the heating elements of the existing heating plate.

[0005] The embodiments of the application can be implemented by the following technical solutions:

[0006] In one aspect, the application provides a tire vulcanizing machine heating plate, which comprises a plate body and heating blocks. The number of heating blocks is at least two. The at least two heating blocks are in the form of a sector with a central angle of θ, and are fixedly and detachably connected to the mounting slots of the plate body in a heat-conducting manner along the circumference of the plate body. The heating block comprises a substrate made of an aluminum alloy material, and the substrate is provided with a heating element.

[0007] Preferably, the heating block is an integrated structure formed by casting, i.e., the substrate is wrapped around the outer surface of the heating element by casting.

[0008] Optionally, the heating block is a detachable structure, and the heating block further comprises a pressing plate, one side of the base plate is provided with a heating element groove, and the heating element is embedded in the heating element groove and is pressed by the pressing plate.

[0009] Preferably, the plate body is made of steel material;

[0010] Preferably, the plate body is in a ring structure, and the number of the heating blocks is several, and the sum of the central angles of the several heating blocks is 360°.

[0011] Preferably, the several heating blocks are uniformly distributed along the circumference of the plate body.

[0012] Preferably, the value of θ is wherein n is a natural number.

[0013] Preferably, the heating block is provided with a first notch at both ends of the outer side, and the first notches of the adjacent two heating blocks form a wiring groove, and the two end portions of the heating element in each heating block extend outwardly into the wiring groove.

[0014] Preferably, along the circumference of the plate body, the fitting gap between the heating block and the side wall of the mounting groove is a wiring groove, and the wiring groove and the wiring groove are in communication with each other.

[0015] Preferably, the wiring ends of the two end portions of each heating element are connected and wired in the wiring groove, and the wires are collected into one wiring groove in the wiring groove and led out to be connected with an external power supply.

[0016] Preferably, the temperature measuring element is arranged in the plate body and corresponds to the arrangement path of the heating element.

[0017] Preferably, when the number of heating elements in the heating block is greater than one, each heating element is arranged on the base plate in a radial concentric manner.

[0018] Preferably, the heating element is in a continuous S-shaped distribution.

[0019] Preferably, the heating element comprises a straight line segment and a plurality of curve segments arranged in a radial direction in sequence, and the distance between adjacent curve segments is the same.

[0020] Preferably, at least one side of the heating block is provided with a second notch for avoiding the fastener on the plate body.

[0021] Another aspect of the present application provides a tire vulcanizing machine comprising the tire vulcanizing machine heating plate according to any one of the above.

[0022] The embodiments of the present application have at least the following beneficial effects:

[0023] 1. The application integrates the heating element and the substrate into a heating block structure, which is detachably fixed and connected to the heating plate body. When the heating element has a problem during use, the heating element can be replaced by directly replacing the heating block structure, which saves more than 50% of maintenance time and has good repeatability.

[0024] 2. The application further makes the heating block structure by casting process, which makes the heating element and the substrate tightly combined, and selects the aluminum alloy material of the substrate, so that the heat transfer efficiency between the heating element and the substrate is increased by more than one time, and the temperature uniformity of the heating plate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a top view of the overall structure of an embodiment of the tire vulcanizing machine heating plate of the application;

[0026] Figure 2 It is Figure 1 Part of the sectional view of the heating plate embodiment;

[0027] Figures 3 to 7 It is a top view of the overall structure of the heating block in different embodiments;

[0028] Figure 8 It is a sectional view of the overall structure of the heating block in an embodiment;

[0029] Figure 9 It is a sectional view of the overall structure of the heating block in another embodiment.

[0030] Reference numerals in the drawings

[0031] 1-plate body, 11-mounting groove, 12-wiring groove, 2-heating block, 21-substrate, 211-heating element groove, 212-first notch, 213-second notch, 22-heating element, 221-curved section, 222-straight section, 23-pressing plate. DETAILED DESCRIPTION

[0032] Hereinafter, based on the preferred embodiments and with reference to the accompanying drawings, the application will be described in detail. Figure 1 to the accompanying drawings Figure 9 The application will be further described.

[0033] In addition, in order to facilitate understanding, various components on the drawings are enlarged or reduced, but this practice is not intended to limit the protection scope of the application.

[0034] The singular form also includes the plural meaning, and vice versa.

[0035] In the description in the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the products of the embodiments of the present application are usually placed, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] The words in the specification are used to illustrate the embodiments of the present application, but are not intended to limit the present application. It should also be noted that unless otherwise explicitly specified and limited, if the terms "provided", "connected", "connected" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood specifically.

[0037] Figure 1 And Figure 2 The overall structure of an embodiment of a tire vulcanizing machine heating plate provided by the present application is shown, which comprises a plate body 1, and a heating block 2 detachably fixedly connected to one side of the plate body 1, and a heating element 22 is arranged in the heating block 2 for heat conduction; in use, the heating plate is installed on the vulcanizing machine, and the side of the plate body 1 away from the heating block 2 is connected with the tire mold for heating; when the heating element 22 is damaged, the heating block 2 where the heating element 22 is located can be quickly replaced, reducing the equipment maintenance time.

[0038] Specifically, the plate body 1 is of a ring structure to better adapt to the shape of the tire, and an installation groove 11 is formed on one side of the plate body 1, and the number of the heating blocks 2 is at least two, each heating block is of a sector structure with a central angle of θ, and each heating block 2 is concentric with the plate body 1 and is detachably fixedly connected to the installation groove 11 along the circumferential direction of the plate body 1; in some specific embodiments, the central angles θ of the heating blocks 2 on the plate body 1 can be the same or different, and the heating blocks 2 can or can not fully cover the plate body 1 along the circumferential direction of the plate body 1; preferably, the heating blocks 2 on the plate body 1 fully cover the plate body 1 along the circumferential direction of the plate body 1, i.e. the sum of the central angles θ of the heating blocks 2 is 360°; preferably, the central angles θ of the heating blocks 2 on the plate body 1 are the same, and the heating blocks 2 fully cover the plate body 1 along the circumferential direction of the plate body 1; preferably, the value of θ is 360° / 3n (n is a natural number), such as 60°, 120°, etc., and the number of the corresponding heating blocks 2 is 6 and 3 respectively, so that the heating blocks 2 can better fully cover the plate body 1 along the circumferential direction of the plate body 1, which can not only ensure the uniform heating effect of the plate body 1, but also facilitate the installation and dismounting of the heating blocks 2.

[0039] Specifically, the detachable connection is achieved by screw structure; in some other optional embodiments, other detachable structures such as thread connection, riveting and the like which are well known to those skilled in the art can also be used.

[0040] Specifically, the substrate 21 is preferably made of aluminum alloy material to improve the heat transfer efficiency.

[0041] Specifically, the plate body 1 is preferably made of steel material to ensure the overall strength of the heating plate.

[0042] In combination with Figure 2 and Figure 9 shown, the heating block 2 is a detachable structural member which comprises a substrate 21, a heating element 22 and a pressing plate 23, one side surface of the substrate 21 is provided with a heating element groove 211, the heating element 22 is embedded in the heating element groove 211 and is pressed by the pressing plate 23; that is, the pressing plate 23 is fastened and connected with the side of the substrate 21 which is provided with the heating element groove 211 by means of fasteners such as screws, so as to limit the heating element 22 in the heating element groove 211 and prevent the heating element 22 from coming out of the heating element groove 211 and thus affecting the heating effect.

[0043] In some preferred embodiments, as shown in Figure 8 , the heating block 2 is an integral structure which is integrally formed by casting and which comprises a heating element 22 and a substrate 21 which is tightly combined with the outer surface of the heating element 22 by casting, specifically, the heating element 22 is placed in the cavity of the casting mold and is fixed by a support frame or a support block, and then the aluminum liquid is completely wrapped around the outer surface of the heating element 22 by casting; the heating element 22 and the substrate 21 of the integral heating block 2 prepared by casting are tightly combined without gap, so that the heat generated by the heating element 22 can be transferred more quickly and uniformly.

[0044] Specifically, the heating element 22 is in a continuous strip-shaped structure which can be selected from an electric heating tube, an induction heating device and the like.

[0045] Further, at least one end portion of the outer side of the substrate 21 is inwardly recessed to form a first notch 212 to jointly form a wiring slot with the plate body 1, both end portions of the heating element 22 extend outwardly into the wiring slot, and the wiring connection of the end portions of the heating element 22 and the connection with the power supply wire are completed in the wiring slot; in some preferred embodiments, both ends of the outer side of the substrate 21 are provided with the first notch 212, and in use, the first notches 212 on the adjacent two heating blocks 2 are communicated to jointly constitute the wiring slot, and the wiring of the heating elements 22 on the adjacent two heating blocks 2 is realized in the wiring slot, thereby saving the wiring distance and facilitating the wiring operation.

[0046] Further, the outer diameter of the heating block 2 is smaller than the outer diameter of the plate body 1, and the fitting gap between the heating block 2 and the side wall of the mounting groove 11 forms a wiring groove 12, that is, the wiring groove 12 is arranged along the circumference of the plate body 1 and is located radially outside the heating block 2, for accommodating the power supply wires connected between the heating elements 22; further, each wiring groove is in communication with the wiring groove 12, that is, the wiring terminals of the end portions of the heating elements 22 are connected and wired in the wiring grooves, and the wires are collected into one wiring groove in the wiring groove 12 and led out to be connected with the external power supply, so that the wiring between the heating elements 22 and the wiring can be realized outside the heating block 2, which is convenient to operate, and especially when the joints or wires of the heating elements 22 have problems during use, the heating block 2 does not need to be disassembled for maintenance.

[0047] Further, when the number of heating elements 22 arranged on each heating block 2 is greater than one, the heating elements 22 are arranged concentrically along the radial direction of the base plate 21, the wiring terminals of the heating elements 22 at the same radial position on adjacent heating blocks 2 are connected with each other and wired, that is, the two wiring terminals of the heating elements 22 at the inner circle are connected with each other and wired, and the two wiring terminals of the heating elements 22 at the outer circle are connected with each other and wired, and each wire is collected into one wiring groove in the wiring groove 12 and led out to be connected with the external power supply.

[0048] Further, at least one side of the heating block 2 is recessed inwardly to form a second notch 213, which together with the plate body 1 forms an avoiding groove, for reserving space for connecting fasteners such as screws, so that the screws penetrate the plate body 1 to be connected with the tire mold at the avoiding groove.

[0049] Further, the arrangement mode of the heating elements 22 will have an important influence on the overall heating effect, and the following will be combined with Figures 3 to 7 Some optional arrangement modes will be specifically described as follows:

[0050] Referring to Figure 3 The arrangement mode of the heating elements of one embodiment is shown, and the number of the heating elements 22 is one, the heating element 22 is arranged in a continuous S shape, which includes a straight line segment 222 and a curved line segment 221, the straight line segment 222 is located at the two end portions of the heating element 22, and the curved line segment 221 is located between the straight line segments, the number of the curved line segments 221 is six rows, and they are arranged in sequence along the radial direction of the base plate 21, and the distance between adjacent curved line segments 221 is the same; the wiring terminals of the two end portions of the heating element 22 are connected in the same wiring groove.

[0051] Figure 4 Another arrangement mode of the heating elements is shown, which is different from Figure 3The difference between the embodiments is only in the number of heating elements 22 and the position of the joints. Specifically, the number of heating elements 22 is two, the two heating elements 22 are arranged along the radial direction of the substrate 21 concentrically, and each heating element 22 includes three rows of curved segments. The lead joints at the two ends of the heating element 22 are respectively located in the two wire grooves on the two sides of the substrate 21.

[0052] Figure 5 Another heating element arrangement is shown, which is different from the above-mentioned embodiments. Figure 4 The difference between the embodiments is only in the number of heating elements 22 and the position of the joints. Specifically, the number of heating elements 22 is two, the two heating elements 22 are arranged along the radial direction of the substrate 21 concentrically, and each heating element 22 includes three rows of curved segments. The lead joints at the two ends of the heating element 22 are respectively located in the two wire grooves on the two sides of the substrate 21.

[0053] Similarly, Figure 6 and Figure 7 Different ways of arranging the number, density and position of the heating elements 22 are also shown respectively. Figure 6 In the embodiment, there are two heating elements 22, each heating element 22 includes eight rows of curved segments 221, and the lead joints at the two ends are located in the same wire groove. Figure 7 In the embodiment, there are three heating elements 22, each heating element 22 includes three rows of curved segments 221, and the lead joints at the two ends are respectively located in the wire grooves on the two sides. That is, the number of heating elements 22, the density of the arrangement in each heating element 22, and the direction of the wire can be selected according to the actual required heating power.

[0054] In some preferred embodiments, as shown in Figure 1 and Figure 2 The heating plate further includes a temperature measuring element 3 arranged inside the plate body 1 and corresponding to the arrangement path of the heating element 22 to detect the temperature at that position. The temperature measuring element 3 is connected with the control system (not shown in the figure) of the vulcanizing machine, and the control system can control the power of the heating element 22 through the temperature signal output by the temperature measuring element 3, thereby ensuring the stable output of the temperature. Specifically, the temperature measuring element 3 can be selected from various temperature sensors known to those skilled in the art. Preferably, the number of temperature measuring elements 3 is consistent with the number of heating elements 22 and is arranged correspondingly to further improve the stable control of the temperature at each position.

[0055] The application also provides a vulcanizing machine comprising the heating plate of any one of the above.

[0056] The specific embodiments of the application are described in detail above, and those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application. These improvements and modifications also belong to the protection scope of the claims of the application.

Claims

1. A tire curing press heating plate characterized by, The application relates to a tire vulcanizing machine heating plate, which comprises a plate body (1) and heating blocks (2). The heating blocks (2) are arranged in a fan-shaped structure with a central angle of theta and are detachably fixedly connected to mounting grooves (11) of the plate body (1) in a heat conduction mode. The heating block (2) comprises a base plate (21) made of an aluminum alloy material, and the base plate (21) is provided with a heating element (22).

2. The tire vulcanizing machine heating plate according to claim 1, wherein the heating block (2) is an integrated structure formed by casting, that is, the base plate (21) is wrapped on the outer surface of the heating element (22) by casting.

3. The tire vulcanizing machine heating plate according to claim 1, wherein the heating block (2) is a detachable structure, the heating block (2) further comprises a pressing plate (23), one side of the base plate (21) is provided with a heating element groove (211), the heating element (22) is embedded in the heating element groove (211) and is pressed by the pressing plate (23).

4. The tire vulcanizing machine heating plate according to claim 1, wherein the plate body (1) is made of steel material; and / or the plate body (1) is in a ring structure, the number of the heating blocks (2) is several, and the sum of the central angles of the several heating blocks (2) is 360 degrees; and / or the several heating blocks (2) are uniformly distributed along the circumference of the plate body (1).

5. The tire vulcanizing machine heating plate according to claim 1, wherein the two ends of the outer side of the heating block (2) are provided with first notches (212), the first notches (212) between the two adjacent heating blocks (2) form a wiring groove, and the two ends of the heating element (22) in each heating block (2) extend outward into the wiring groove.

6. The tire vulcanizing machine heating plate according to claim 5, wherein along the circumference of the plate body (1), the fitting gap between the heating block (2) and the side wall of the mounting groove (11) is a wiring groove (12), and the wiring groove and the wiring groove (12) are in communication.

7. The tire vulcanizing machine heating plate according to claim 6, wherein the wiring ends of the two ends of each heating element (22) are connected and led in the wiring groove, and the leads are gathered into one wiring groove in the wiring groove (12) and led out to be connected with an external power supply. And / or, the value of θ is wherein n is a natural number.

8. The tire vulcanizing machine heating plate according to claim 1, further comprising a temperature measuring element (3), which is arranged in the plate body (1) and corresponds to the arrangement path of the heating element (22).

9. The tire vulcanizing machine heating plate according to claim 1, wherein when the number of the heating elements (22) in the heating block (2) is greater than one, each heating element (22) is arranged on the base plate (21) in a radial concentric mode; and / or the heating element (22) is arranged in a continuous S-shaped mode. ​ ​ ​ ​ ​ ​ ​ ​ And / or, the heating element (22) comprises a straight section (222) and a plurality of curve sections (221) arranged along a radial direction in sequence, the distance between adjacent curve sections (221) is the same. And / or, at least one side of the heating block (2) is provided with a second notch (213) for avoiding the fastener on the plate body (1).

10. A tire vulcanizer characterized by comprising: A tire vulcanizing machine heating plate comprising the heating block (2) according to any one of claims 1-9.

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