External gas heating equipment for tire vulcanization

Abstract

The utility model discloses external gas heating equipment for tire vulcanization, which belongs to the technical field of tire vulcanization equipment and comprises a mold body provided with a vulcanization chamber, a capsule is arranged in the vulcanization chamber, and a medium is filled in the capsule; the flow guide heating cavity is located outside the mold body, and the two ends of the flow guide heating cavity communicate with the interior of the capsule; a driving shaft extending from one end to the other end is arranged in the flow guide heating cavity, a plurality of flow guide parts are arranged on the driving shaft, and the driving shaft is connected with a driving assembly; an electric heating assembly is arranged outside the flow guide heating cavity, and the flow guide heating cavity is made of a heat conduction material; the two ends of the flow guide heating cavity are communicated with the interior of the capsule, and the flow guide piece rotates to generate air pressure difference, so that a medium circularly flows between the interior of the capsule and the flow guide heating cavity and is heated under the action of the electric heating assembly; the flow guide heating cavity is located outside the mold body and does not occupy the internal space of the capsule, and the applicable tire size and specification are not limited.

Description

Technical Field

[0001] The utility model relates to the technical field of tire vulcanization equipment, in particular to an external gas heating device used for tire vulcanization. Background Art

[0002] In the prior art, some tire vulcanization equipment will set an electric heating component inside the capsule. The electric heating component directly generates heat inside the capsule and promotes the circulation of the medium inside the capsule by setting or not setting a stirring structure, so that the temperature of the medium is quickly and evenly increased, and then the heat is evenly transferred to the green tire that needs heat through the capsule.

[0003] A common electric heating component is an electric heating tube, and a common medium is nitrogen. The stirring structure drives the nitrogen inside the capsule to circulate through the surface of the electric heating tube to achieve heat conduction inside the capsule and form a temperature field; however, the contact area between the surface of the electric heating tube and the nitrogen is small, resulting in low heat transfer efficiency, a slow heating rate of the nitrogen, and a high energy consumption for the capsule and the green tire to reach the predetermined temperature; in order to reach the vulcanization temperature as quickly as possible, the electric heating tube will be designed into a coil shape, which will increase the total electrical power while increasing the contact area with the nitrogen, but this will also increase the volume of the electric heating tube, which will greatly occupy the space inside the capsule, thereby limiting the applicable tire size and specifications, reducing the applicable scope of the tire vulcanization equipment, and making it difficult to improve the utilization rate of the tire vulcanization equipment.

[0004] Therefore, it is an urgent problem to be solved at this stage to develop and design an external gas heating device for tire vulcanization that has a good heating effect on the medium, does not need to occupy the space inside the capsule, and does not limit the applicable tire size and specifications. Utility Model Content

[0005] In response to the problems existing in the prior art, the utility model provides an external gas heating device for tire vulcanization, both ends of the guide heating chamber are connected to the interior of the capsule, and when the guide piece rotates, an air pressure difference can be generated in the guide heating chamber, so that the medium circulates between the interior of the capsule and the guide heating chamber, and quickly heats up under the action of the electric heating component; the guide heating chamber is located outside the mold body, and the layout is more flexible, and will not occupy the space inside the capsule. The applicable tire size and specifications will not be restricted, and the versatility is better.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides an external gas heating device for tire vulcanization, comprising:

[0008] A mold body, wherein the mold body has a vulcanization chamber, wherein a capsule is arranged in the vulcanization chamber, and wherein the capsule is filled with a medium;

[0009] A flow-conducting heating cavity, the flow-conducting heating cavity is located outside the mold body, and both ends of the flow-conducting heating cavity are connected to the interior of the capsule; a driving shaft extending from one end to the other end is provided in the flow-conducting heating cavity, and a plurality of flow-conducting parts are provided on the driving shaft, and the driving shaft is connected to a driving assembly for driving it to rotate; an electric heating assembly is provided outside the flow-conducting heating cavity, and the cavity wall of the flow-conducting heating cavity corresponding to the electric heating assembly is made of heat-conducting material.

[0010] As a preferred technical solution, a plurality of the guide members are distributed along the axial direction of the driving shaft; when the guide members rotate, the medium in the guide heating chamber has a tendency to flow from one end of the guide heating chamber to the other end.

[0011] As a preferred technical solution, the mold body includes a center rod, and the center rod extends into the vulcanization chamber; a clamping assembly is provided on the center rod, and the clamping assembly installs the capsule in the vulcanization chamber.

[0012] As a preferred technical solution, a ring seat is provided on the outer periphery of the center rod, and one end of the ring seat is located inside the capsule; the ring seat is provided with a through air outlet and air inlet, and the air outlet and the air inlet are respectively connected to the two ends of the diversion heating chamber through pipes.

[0013] As a preferred technical solution, the air outlet holes and the air inlet holes are both provided in plurality, and the plurality of air outlet holes and the plurality of air inlet holes are distributed along the circumferential direction;

[0014] And / or, the axes of the air outlet and the air inlet are parallel to the axis of the mold body;

[0015] And / or, a bearing seat is provided at the end of the diversion heating chamber, and the end of the drive shaft is rotatably connected to the bearing seat.

[0016] As a preferred technical solution, a plurality of heat-conducting sheets extending inwards are provided on the inner wall of the flow-conducting heating cavity corresponding to the electric heating component, and the heat-conducting sheets are made of heat-conducting material.

[0017] As a preferred technical solution, a plurality of the flow guides are all located on one side of the heat conducting plate, or a plurality of the flow guides are respectively located on both sides of the heat conducting plate;

[0018] And / or, the flow guide member is configured as an impeller;

[0019] and / or, the axis of the mold body is perpendicular to the axis of the drive shaft;

[0020] And / or, the driving component is configured as a motor;

[0021] And / or, the driving assembly is arranged inside or outside the diversion heating chamber.

[0022] As a preferred technical solution, the cavity wall of the flow-conducting heating cavity corresponding to the electric heating component and the heat-conducting sheet are made of aluminum or silicon carbide;

[0023] And / or, the medium is set to nitrogen or heat transfer oil.

[0024] As a preferred technical solution, the outer shell of the electric heating component is provided with a heat-insulating layer.

[0025] As a preferred technical solution, the electric heating component is configured as an electromagnetic induction coil, the electromagnetic induction coil is wound around the flow-conducting heating cavity, and the thermal insulation layer is configured as a magnetic conductor;

[0026] Alternatively, the electric heating component is configured as an electric heating tube, the electric heating tube is attached to the outer wall of the flow-conducting heating cavity, and the thermal insulation layer is made of a heat-insulating material.

[0027] The beneficial effects of the utility model are as follows:

[0028] 1. Both ends of the flow-guiding heating chamber of the utility model are connected with the interior of the capsule. When the driving component drives the several flow-guiding members on the driving shaft to rotate, a pressure difference can be generated in the flow-guiding heating chamber, so that the medium circulates between the capsule and the flow-guiding heating chamber, and the medium can quickly exchange heat and heat up at the electric heating component; the flow-guiding heating chamber is located outside the mold body, which is not only more flexible in layout, but also does not occupy the space inside the capsule, so that the applicable tire size and specifications are not limited, and the versatility is better.

[0029] 2. The several flow guides of the utility model can rotate synchronously with the driving shaft, which can effectively increase the air pressure difference in the flow guide heating chamber and promote the flow of the medium.

[0030] 3. A plurality of heat-conducting plates extending inward are arranged on the inner wall of the flow-conducting heating chamber corresponding to the electric heating component of the utility model. The chamber wall and the heat-conducting plates of the flow-conducting heating chamber corresponding to the electric heating component are made of heat-conducting materials, which effectively increases the heat exchange area with the medium, can fully transfer the heat generated by the electric heating component to the medium, and improve the heat exchange efficiency.

[0031] 4. The utility model utilizes a plurality of circumferentially distributed discharge holes to enable the medium near the ring seat inside the capsule to enter the guide cavity evenly; utilizes a plurality of circumferentially distributed entry holes to enable the medium heated by the guide heating cavity to flow evenly into the capsule, and can ensure the medium to flow stably inside the capsule, and transfer heat evenly to the capsule. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an external gas heating device for tire vulcanization according to the utility model;

[0033] Figure 2 for Figure 1 A magnified image of area A;

[0034] Figure 3 for Figure 1 Enlarged view of area B;

[0035] Figure 4 for Figure 1 A schematic diagram of the structure of the heat conducting sheet in FIG.

[0036] Figure 5 The utility model is a schematic diagram of the structure of the flow-guiding heating chamber in another embodiment of the external gas heating device for tire vulcanization.

[0037] In the figure: 1-mold body, 11-vulcanization chamber, 12-capsule, 13-center rod, 14-clamping assembly, 15-ring seat, 151-air outlet, 152-air inlet, 2-flow guide heating chamber, 21-bearing seat, 22-heat conductive plate, 3-driving shaft, 31-flow guide, 32-driving assembly, 4-electric heating assembly, 5-insulation layer. DETAILED DESCRIPTION

[0038] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0039] Embodiment 1

[0040] Please refer to Figure 1-Figure 4 , is an embodiment of an external gas heating device for tire vulcanization provided by the utility model, comprising a mold body 1 and a diversion heating chamber 2; the mold body 1 has a vulcanization chamber 11, and a capsule 12 is arranged in the vulcanization chamber 11, and the capsule 12 is filled with a medium; the diversion heating chamber 2 is located outside the mold body 1, and both ends of the diversion heating chamber 2 are connected to the inside of the capsule 12, and a circulation path for the flow of the medium can be formed between the diversion heating chamber 2 and the inside of the capsule 12; a driving shaft extending from one end to the other end is arranged in the diversion heating chamber 2 3. A plurality of flow guides 31 are arranged on the driving shaft 3, and a driving assembly 32 is connected to the driving shaft 3 for driving the driving shaft 3 to rotate. When the driving assembly 32 drives the plurality of flow guides 31 on the driving shaft 3 to rotate, a pressure difference can be generated in the flow guiding heating chamber 2 to promote the circulation of the medium. An electric heating assembly 4 is arranged outside the flow guiding heating chamber 2, and the cavity wall of the flow guiding heating chamber 2 corresponding to the electric heating assembly 4 is made of heat conductive material. When the medium flows through the flow guiding heating chamber 2, the heat generated by the electric heating assembly 4 can be transferred to the medium through the flow guiding heating chamber 2 to increase the temperature of the medium.

[0041] Need to explain, Figure 1-Figure 3 The direction of the arrow in the figure is the flow direction of the medium; in other embodiments, the medium may also flow in the reverse direction, subject to the medium being able to fully exchange heat and heat up in the guide heating chamber 2.

[0042] Specifically, the medium is an inert gas, preferably helium; in other embodiments, the medium may also be heat transfer oil, so as to achieve stable heat transfer.

[0043] In this embodiment, please refer to Figure 1 and Figure 3 , several guide members 31 are distributed along the axial direction of the driving shaft 3; when the guide member 31 rotates, the medium in the guiding heating chamber 2 has a tendency to flow from one end of the guiding heating chamber 2 to the other end; specifically, bearing seats 21 are provided at both ends of the guiding heating chamber 2, and the driving shaft 3 is rotatably connected to the two bearing seats 21 respectively, and the driving component 32 is arranged outside the guiding heating chamber 2 and does not need to withstand the high temperature of the medium; one end of the driving shaft 3 extends out of the guiding heating chamber 2 and is transmission-connected to the driving component 32, and the end of the driving shaft 3 extending out of the guiding heating chamber 2 should be rotationally sealed and connected to the guiding heating chamber 2; the driving component 32 is preferably configured as a motor; in other embodiments, the driving component 32 can also be arranged in the guiding heating chamber 2, with a more compact structure, a smaller torque transmission distance of the driving component 32, and a smaller starting torque required, which is beneficial to reducing the power of the driving component 32, but the driving component 32 needs to be able to withstand the high temperature of the medium.

[0044] For details, please refer to Figure 1 and Figure 3 The axis of the mold body 1 is preferably perpendicular to the axis of the drive shaft 3. The pressure difference generated by the rotation of the guide member 31 can effectively promote the medium to flow into the guide heating chamber 2 from the air outlet 151 and flow into the capsule 12 from the air inlet 152; the guide member 31 is preferably set as an impeller.

[0045] In this embodiment, please refer to Figure 1 and Figure 2 The mold body 1 includes a center rod 13, which is coaxially arranged with the mold body 1 and extends into the vulcanization chamber 11; a clamping assembly 14 is provided on the center rod 13; specifically, the clamping assembly 14 should include an upper clamping assembly and a lower clamping assembly, which can clamp the upper edge and the lower edge of the capsule 12 respectively, so as to install the capsule 12 in the vulcanization chamber 11; the clamping assembly 14 is a conventional structure in the technical field and will not be described in detail here.

[0046] Based on the above examples, please refer to Figure 1 and Figure 2A ring seat 15 is provided on the outer periphery of the central rod 13, and the upper end surface of the ring seat 15 is located inside the capsule 12; a through air outlet 151 and an air inlet 152 are provided on the ring seat 15, and the air outlet 151 and the air inlet 152 are respectively connected to the two ends of the diversion heating chamber 2 through pipes, so that the medium can flow into the diversion heating chamber 2 along the air outlet 151, and can flow into the capsule 12 along the air inlet 152.

[0047] For details, please refer to Figure 1 and Figure 2 The axes of the air outlet 151 and the air inlet 152 should be parallel to the axis of the mold body 1; ensuring that the medium can flow smoothly between the capsule 12 and the guide heating chamber 2; further, a radially extending channel can be set between the air inlet 152 and the inside of the capsule 12, which can increase the distance between the medium flowing out of the capsule 12 and the medium flowing into the capsule 12, so that the medium flowing into the capsule 12 needs to flow in the capsule 12 for a period of time before it can flow out again, ensuring that the heat is fully transferred to the capsule 12 and the green tire.

[0048] It should be noted that the air outlet holes 151 and the air inlet holes 152 are preferably set to be multiple, and the multiple air outlet holes 151 and the multiple air inlet holes 152 are evenly distributed along the circumferential direction. More preferably, the multiple air outlet holes 151 and the multiple air inlet holes 152 are staggered and distributed along the circumferential direction, which can ensure that the medium inside the capsule 12 flows out evenly and that the heated medium flows into the capsule 12 evenly; wherein the circumferential direction is based on the axis of the mold body 1.

[0049] In this embodiment, please refer to Figure 1 , Figure 3 and Figure 4 A plurality of heat-conducting sheets 22 extending inward are provided on the inner wall of the flow-conducting heating chamber 2 corresponding to the electric heating component 4. The heat-conducting sheets 22 are made of heat-conducting material. The heat-conducting sheets 22 can increase the heat exchange area with the medium, and can fully transfer the heat generated by the electric heating component 4 to the medium, thereby improving the heat exchange efficiency; further, a plurality of flow-conducting members 31 are respectively located on both sides of the heat-conducting sheets 22, thereby promoting the medium to flow smoothly through the heat-conducting sheets 22; specifically, the materials of the cavity wall and the heat-conducting sheets 22 at the flow-conducting heating chamber 2 corresponding to the electric heating component 4 are preferably set to aluminum or silicon carbide, which can efficiently conduct heat; further, the heat-conducting sheets 22 are preferably in the shape of fins, and there is a large contact area between the medium and the fin-shaped heat-conducting sheets 22, thereby improving the heat exchange effect.

[0050] In this embodiment, please refer to Figure 1 and Figure 3The outer sleeve of the electric heating component 4 is provided with an insulation layer 5, which wraps the electric heating component 4 and can effectively avoid the waste of heat generated by the electric heating component 4; specifically, the electric heating component 4 is preferably configured as an electromagnetic induction coil, which is wound around the diversion heating chamber 2, and correspondingly, the insulation layer 5 can be configured as a magnetic conductor; in other embodiments, the electric heating component 4 can also be configured as an electric heating tube, which is attached to the outer wall of the diversion heating chamber 2, and correspondingly, the insulation layer 5 is made of insulation material, so as to effectively transfer heat to the diversion heating chamber 2.

[0051] It should be noted that a temperature measuring component may preferably be provided inside the capsule 12 for measuring the temperature of the medium inside the capsule 12 in real time to ensure that the temperature of the medium inside the capsule 12 is always within a suitable range; specifically, the temperature measuring component is preferably configured as a temperature sensor.

[0052] Embodiment 2

[0053] Please refer to Figure 5 The main difference between this embodiment and the first embodiment is that the plurality of flow guides 31 are all located on one side of the heat conducting sheet 22, which can also effectively promote the circulation of the medium.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An external gas heating device for tire vulcanization, characterized in that: include: A mold body (1), wherein the mold body (1) has a vulcanization chamber (11), wherein a capsule (12) is arranged in the vulcanization chamber (11), and wherein the capsule (12) is filled with a medium; A flow-guiding heating cavity (2) is provided, the flow-guiding heating cavity (2) being located outside the mold body (1), and both ends of the flow-guiding heating cavity (2) being connected to the interior of the capsule (12); a driving shaft (3) extending from one end to the other end is provided in the flow-guiding heating cavity (2), a plurality of flow-guiding members (31) are provided on the driving shaft (3), and the driving shaft (3) is connected to a driving assembly (32) for driving the driving shaft (3) to rotate; an electric heating assembly (4) is provided outside the flow-guiding heating cavity (2), and a cavity wall of the flow-guiding heating cavity (2) corresponding to the electric heating assembly (4) is made of a heat-conducting material.

2. The external gas heating device for tire vulcanization according to claim 1, characterized in that: A plurality of the guide members (31) are distributed along the axial direction of the drive shaft (3); when the guide members (31) rotate, the medium in the guide heating chamber (2) has a tendency to flow from one end of the guide heating chamber (2) to the other end.

3. The external gas heating device for tire vulcanization according to claim 1, characterized in that: The mold body (1) comprises a center rod (13), wherein the center rod (13) extends into the vulcanization chamber (11); a clamping assembly (14) is provided on the center rod (13), and the clamping assembly (14) mounts the capsule (12) in the vulcanization chamber (11).

4. The external gas heating device for tire vulcanization according to claim 3, characterized in that: A ring seat (15) is provided on the outer periphery of the central rod (13), and one end of the ring seat (15) is located inside the capsule (12); the ring seat (15) is provided with a through air outlet hole (151) and an air inlet hole (152), and the air outlet hole (151) and the air inlet hole (152) are respectively connected to two ends of the diversion heating chamber (2) through pipes.

5. The external gas heating device for tire vulcanization according to claim 4, characterized in that: The air outlet holes (151) and the air inlet holes (152) are both provided in plurality, and the plurality of air outlet holes (151) and the plurality of air inlet holes (152) are distributed along the circumferential direction; And / or, the axes of the air outlet hole (151) and the air inlet hole (152) are parallel to the axis of the mold body (1); And / or, a bearing seat (21) is provided at the end of the diversion heating chamber (2), and the end of the drive shaft (3) is rotatably connected to the bearing seat (21).

6. An external gas heating device for tire vulcanization according to claim 1 or 2, characterized in that: A plurality of heat-conducting sheets (22) extending inwards are provided on the inner wall of the flow-conducting heating cavity (2) corresponding to the electric heating component (4), and the heat-conducting sheets (22) are made of heat-conducting material.

7. The external gas heating device for tire vulcanization according to claim 6, characterized in that: A plurality of the flow guide members (31) are all located on one side of the heat conducting plate (22), or a plurality of the flow guide members (31) are respectively located on both sides of the heat conducting plate (22); And / or, the flow guide member (31) is configured as an impeller; And / or, the axis of the mold body (1) is perpendicular to the axis of the drive shaft (3); And / or, the driving component (32) is configured as a motor; And / or, the driving component (32) is arranged inside or outside the flow-guiding heating chamber (2).

8. The external gas heating device for tire vulcanization according to claim 7, characterized in that: The material of the cavity wall of the flow-conducting heating cavity (2) corresponding to the electric heating component (4) and the heat-conducting sheet (22) are both set to be aluminum or silicon carbide; And / or, the medium is set to nitrogen or heat transfer oil.

9. The external gas heating device for tire vulcanization according to claim 1, characterized in that: The electric heating component (4) is externally covered with a heat-insulating layer (5).

10. The external gas heating device for tire vulcanization according to claim 9, characterized in that: The electric heating component (4) is configured as an electromagnetic induction coil, the electromagnetic induction coil is wound around the flow-conducting heating chamber (2), and the thermal insulation layer (5) is configured as a magnetic conductor; Alternatively, the electric heating component (4) is configured as an electric heating tube, the electric heating tube is attached to the outer wall of the flow-conducting heating cavity (2), and the thermal insulation layer (5) is made of a thermal insulation material.

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