Hot plate heating device for curing press and curing press

Abstract

The utility model provides a vulcanizing machine hot plate heating device and vulcanizing machine. Vulcanizing machine hot plate heating device includes base body, heating coil, heating coil includes a plurality of heating parts, each heating part is sequentially arranged along the circumference of base body, and the end of each heating part is sequentially connected in head and tail, and the heating part has at least one layer of meander structure. The present application solves the problem of uneven heating in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of rubber product processing, and more specifically, to a hot plate heating device for a vulcanizing machine and a vulcanizing machine. Background Technology

[0002] As a key piece of equipment in rubber product manufacturing, the heating method of a vulcanizing machine directly affects production efficiency and product quality. Traditional vulcanizing machines require large boiler systems, resulting in high initial investment, safety hazards, and maintenance costs. Traditional hot plate heating methods include electric heating, steam heating, and oil heating. Steam heating and oil heating have low thermal efficiency, high energy consumption, and the oil is prone to aging and deterioration, causing environmental pollution. While electric heating does not have these drawbacks, uneven heating can lead to uneven vulcanization. Utility Model Content

[0003] The main purpose of this utility model is to provide a hot plate heating device for a vulcanizing machine and a vulcanizing machine, so as to solve the problem of uneven heating by electric heating in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, a hot plate heating device for a vulcanizing machine is provided, comprising a base; a heating coil, the heating coil comprising a plurality of heating parts, each heating part being arranged sequentially along the circumference of the base, the ends of each heating part being connected sequentially, and the heating part having at least one layer of loop structure.

[0005] Furthermore, the heating coil includes a single heating coil tube, which includes a heating section and a transition section. The heating coil tube is spirally wound to form a heating part. The transition section is located between two adjacent heating parts, and the heating sections of two adjacent heating parts are connected by the transition section. The transition section protrudes from the plane where the heating part is located.

[0006] Furthermore, along the extension direction of the single heating coil tube, the winding direction of each heating part is the same.

[0007] Furthermore, the heating coil has at least two protruding sections that extend out of the base and are used to connect to external devices. The protruding sections are respectively connected to the outer ring of different heating elements, and one end of the protruding section connected to the heating element is located at the outer ring of the base.

[0008] Furthermore, the heating coil also includes a central heating section with a loop-shaped structure, located at the center of the base, with each heating section located around the central heating section, and one end of the central heating section abutting against another heating section.

[0009] Furthermore, the heating coil has a first protruding section and a second protruding section, which extend out of the base and are used for connection to an external device. The first protruding section is connected to the outer ring of the heating element, and the second protruding section extends to the center of the base and is connected to the inner ring of the central heating element.

[0010] Furthermore, the substrate includes a hot plate and a functional layer, which are stacked together, and at least one of the hot plate and the functional layer has a groove, the opening of which faces the surface of the stacked hot plate and functional layer, and at least a portion of the coil is embedded in the groove.

[0011] Furthermore, the functional layer includes a first magnetic insulating layer, with a groove on the side of the hot plate facing the functional layer, and the first magnetic insulating layer covering the opening side of the groove; and a heat insulation layer, which is stacked with the first magnetic insulating layer and located on the side of the first magnetic insulating layer away from the hot plate.

[0012] Furthermore, the first magnetic insulation layer includes multiple silicon steel sub-layers, which are stacked sequentially. Each silicon steel sub-layer includes multiple sub-segments, which are sequentially spliced ​​together circumferentially to form a ring structure. A splicing line is formed between two adjacent sub-segments, and the splicing lines between two adjacent silicon steel sub-layers are staggered along the stacking direction.

[0013] According to another aspect of the present invention, a vulcanizing machine is provided, including the above-described vulcanizing machine hot plate heating device.

[0014] By applying the technical solution of this utility model, the following technical effects are achieved:

[0015] By winding the heating coil into multiple heating sections, each section can be adjusted during use, thereby making the temperature of each section closer to equilibrium, improving the temperature uniformity of the hot plate surface, and reducing uneven vulcanization caused by unbalanced heating. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 An explosion diagram of the heating device of this application is shown;

[0018] Figure 2 A top view of the coil with a central heating element is shown in this application;

[0019] Figure 3 A top view of the coil without a central heating element of this application is shown;

[0020] Figure 4 A simulation diagram of the coil layout heating according to this application is shown;

[0021] Figure 5 A simulation diagram of conventional coil heating layout is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Substrate; 20. Heating coil; 21. Extended section; 22. Central heating part; 23. Heating part; 30. Hot plate; 40. First magnetic layer; 50. Second magnetic layer; 60. Insulation layer. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] To address the problem of uneven heating caused by electric heating in existing technologies, this invention provides a hot plate heating device for a vulcanizing machine and a vulcanizing machine itself.

[0028] See Figures 1 to 3 The hot plate heating device of the vulcanizing machine includes: a base 10 and a heating coil 20. The heating coil 20 includes multiple heating parts 23, each heating part 23 is arranged sequentially along the circumference of the base 10, and the ends of each heating part 23 are connected sequentially. The heating part 23 has at least one layer of spiral structure.

[0029] By winding the heating coil 20 into multiple heating sections 23, each section can be adjusted during use, thereby making the temperature of each section closer to equilibrium, improving the temperature uniformity of the hot plate 30 surface, and reducing uneven vulcanization caused by unbalanced heating.

[0030] The heating coil 20 includes a single heating coil tube, which includes a heating section and a transition section. The heating coil tube is spirally wound to form a heating part 23. The transition section is located between two adjacent heating parts 23. The heating sections of two adjacent heating parts 23 are connected by the transition section. The transition section protrudes from the plane where the heating part 23 is located.

[0031] Along the extension direction of the single heating coil tube, the winding direction of each heating part 23 is the same.

[0032] The heating coil 20 has at least two protruding sections 21 that extend out of the base 10 and are used to connect to external devices. The protruding sections 21 are respectively connected to the outer ring of different heating parts 23, and one end of the protruding section 21 connected to the heating part 23 is located at the outer ring of the base 10.

[0033] The coil is introduced from one end of the partition and wound around the outside of the hot plate 30. The coil can be wound 1-3 times, with a spacing of 30-50mm between the windings. After the outer winding is completed, the coil is wound on the inner side in a zigzag pattern. After winding in each area, a heating section is formed, and then the coil is wound into the next area, forming a transition section. After the coil is wound in all areas, the final coil is led out from the top. The introduction end and the lead-out end form two protruding sections 21.

[0034] The coil is a current-carrying wire that heats the entire hot plate 30 through electromagnetic induction. This single wire heats the entire hot plate 30, reducing the number of electromagnetic heaters and lowering production costs. The heating elements 23 are arranged in a U-shape, ensuring the coil current direction remains consistent. This enhances the intensity of electromagnetic induction in the hot plate 30, further improving the efficiency of electromagnetic induction heating.

[0035] In this application, the heating coil 20 also includes a central heating part 22 with a loop structure. The central heating part 22 is located at the center of the base 10, and each heating part 23 is located around the central heating part 22. One end of the central heating part 22 is connected to a heating part 23.

[0036] The heating coil 20 has a first extension section and a second extension section. The first extension section and the second extension section extend out of the base 10 and are used to connect to external devices. The first extension section is connected to the outer ring of the heating part 23, and the second extension section extends to the center of the base 10 and is connected to the inner ring of the central heating part 22.

[0037] The spiral winding method between each heating element 23 may cause the coil density in the central region to be different from the coil density in each heating element 23, resulting in a temperature difference. Therefore, a central heating element 22 is provided, and by winding the central region separately, the temperature between the central region and each heating element 23 is balanced, thereby reducing the temperature difference.

[0038] In this application, the substrate 10 includes a hot plate 30 and a functional layer, the hot plate 30 and the functional layer are stacked, and at least one of the hot plate 30 and the functional layer has a groove, the opening of the groove is facing the surface of the stacked hot plate 30 and the functional layer, and at least a portion of the heating coil 20 is embedded in the groove.

[0039] The heating plate 30 is the main heating plate, while the functional layer primarily serves to prevent magnetic leakage and maintain heat. To improve the overall heat retention of the heating device and reduce magnetic field leakage, the heating coil 20 needs to be completely housed inside the base 10. Therefore, a groove is provided on the base 10 to accommodate the coil. Since the body is divided into a functional layer and a heating plate 30, grooves can be provided on both the heating plate 30 and the functional layer for placing the heating coil 20. However, since the functional layer primarily serves to prevent magnetic leakage and maintain heat, it is optimal to have the groove on the heating plate 30 to avoid affecting the heat retention and magnetic insulation functions of the functional layer.

[0040] In this application, the functional layer includes a first magnetic insulating layer 40 and a heat insulation layer 60. The hot plate 30 has a groove on the side facing the functional layer. The first magnetic insulating layer 40 covers the opening side of the groove. The heat insulation layer 60 is stacked with the first magnetic insulating layer 40 and is located on the side of the first magnetic insulating layer 40 away from the hot plate 30.

[0041] The first magnetic insulating layer 40 includes a stainless steel layer and a silicon steel layer, with the silicon steel layer being closer to the hot plate 30 than the stainless steel layer.

[0042] The first magnetic insulating layer 40 primarily functions to maintain magnetism, reducing electromagnetic field leakage and thus improving the heating effect of the hot plate 30 while minimizing energy waste. The first magnetic insulating layer 40 mainly covers the surface of the hot plate 30, reducing magnetic field leakage from its surface. Furthermore, the vulcanizing machine hot plate heating device also includes a second magnetic insulating layer 50, which is disposed on the outer peripheral side of the hot plate 30 and further reduces magnetic field leakage from its outer peripheral side.

[0043] The insulation layer 60 mainly serves to keep the heat in place. During the use of the heating device, heat exchange with the surrounding environment with a lower temperature is inevitable, resulting in heat loss. Therefore, the insulation layer 60 is set up to reduce heat loss and lower costs.

[0044] In this application, the silicon steel layer includes multiple silicon steel sub-layers, which are stacked sequentially. Each silicon steel sub-layer includes multiple sub-segments, which are sequentially spliced ​​together circumferentially to form a ring structure. A splicing line is formed between two adjacent sub-segments, and the splicing lines between two adjacent silicon steel sub-layers are staggered along the stacking direction.

[0045] By using multiple layers of magnetically insulating silicon steel, the difficulty of magnetic field passage is increased, thereby improving the magnetic retention effect. To facilitate installation and disassembly of the silicon steel layers, the sublayers are divided into multiple segments. During installation, these segments can be spliced ​​together to form a single silicon steel sublayer. This also avoids the inconvenience of handling a single silicon steel sublayer due to its excessive size and weight. The sub-segments are smaller and lighter than the entire sublayer, making installation easier for workers.

[0046] A splicing line is formed between two adjacent sub-segments. The magnetic field may leak from the gap of the splicing line. Therefore, the splicing lines between two adjacent silicon steel sub-layers are staggered along the stacking direction. In this way, the magnetic field leaking from the splicing line of the first layer will be blocked by the silicon steel sub-layer of the second layer, thereby reducing the leakage of the magnetic field.

[0047] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0048] 1. By winding the heating coil 20 into multiple heating parts 23, each part can be adjusted during use, thereby making the temperature of each part closer to balance, improving the temperature uniformity of the hot plate 30 surface, and reducing the occurrence of uneven vulcanization caused by unbalanced heating.

[0049] 2. Each heating element 23 is arranged in a U-shape, and the direction of the coil current is kept consistent, which improves the intensity of electromagnetic induction of the hot plate 30 and further improves the efficiency of electromagnetic induction heating.

[0050] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hot plate heating device for a vulcanizing machine, characterized in that, include: Matrix (10); Heating coil (20) includes multiple heating parts (23), each heating part (23) is arranged sequentially along the circumference of the base (10), and the ends of each heating part (23) are connected sequentially. Each heating part (23) has at least one layer of spiral structure.

2. The hot plate heating device for a vulcanizing machine according to claim 1, characterized in that, The heating coil (20) includes a single heating coil tube, which includes a heating section and a transition section. The heating coil tube is spirally wound to form a heating part (23). The transition section is located between two adjacent heating parts (23). The heating sections of two adjacent heating parts (23) are connected by the transition section. The transition section protrudes from the plane where the heating part (23) is located.

3. The hot plate heating device for a vulcanizing machine according to claim 2, characterized in that, Along the extension direction of the single heating coil tube, the winding direction of each heating part (23) is the same.

4. The hot plate heating device for a vulcanizing machine according to claim 2, characterized in that, The heating coil (20) has at least two protruding sections (21) that extend out of the base (10) and are used to connect to external devices. The protruding sections (21) are respectively connected to the outer ring of different heating parts (23), and one end of the protruding section (21) connected to the heating part (23) is located at the outer ring of the base (10).

5. The hot plate heating device for a vulcanizing machine according to claim 2, characterized in that, The heating coil (20) further includes a central heating part (22) with a loop structure, the central heating part (22) being located at the center of the base (10), and each heating part (23) being located around the central heating part (22), with one end of the central heating part (22) being connected to one of the heating parts (23).

6. The hot plate heating device for a vulcanizing machine according to claim 5, characterized in that, The heating coil (20) has a first extension and a second extension, which extend out of the base (10) and are used to connect to an external device. The first extension is connected to the outer ring of the heating part (23), and the second extension extends to the center of the base (10) and is connected to the inner ring of the central heating part (22).

7. The hot plate heating device for a vulcanizing machine according to any one of claims 1 to 6, characterized in that, The substrate (10) includes a hot plate (30) and a functional layer, the hot plate (30) and the functional layer are stacked, and at least one of the hot plate (30) and the functional layer has a groove, the opening of the groove is directed toward the surface of the stacked hot plate (30) and the functional layer, and at least a portion of the heating coil (20) is embedded in the groove.

8. The hot plate heating device for a vulcanizing machine according to claim 7, characterized in that, The functional layer includes: The first magnetic layer (40) has a groove on the side of the hot plate (30) facing the functional layer, and the first magnetic layer (40) covers the opening side of the groove; The heat insulation layer (60) is stacked with the first magnetic layer (40) and located on the side of the first magnetic layer (40) away from the hot plate (30).

9. The hot plate heating device for a vulcanizing machine according to claim 8, characterized in that, The first magnetic insulation layer (40) includes multiple silicon steel sub-layers, each of which is stacked sequentially. Each silicon steel sub-layer includes multiple sub-segments, and each sub-segment is sequentially spliced ​​together in the circumferential direction to form a ring structure. A splicing line is formed between two adjacent sub-segments, and the splicing lines between two adjacent silicon steel sub-layers are staggered along the stacking direction.

10. A vulcanizing machine, characterized in that, The hot plate heating device for a vulcanizing machine includes any one of claims 1 to 9.

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