Mold heating device and mold system

Abstract

This utility model discloses a heating device and system for molds, belonging to the field of forging and pressing technology, and is designed to solve the problem of uneven heat distribution in existing heating devices. The heating device for molds disclosed in this utility model includes: a support frame; and at least two porous media infrared combustion components, each respectively mounted on the support frame. Each outer wall surface of the mold faces at least one porous media infrared combustion component, and the outer wall surface of the mold is within the heat radiation range of the porous media infrared combustion components. The porous media infrared combustion components are used to slow down the cooling rate of the mold. The heating device and system for molds disclosed in this utility model utilize porous media infrared combustion components to generate heat through fuel combustion. The heat is more abundant and more evenly distributed, allowing the mold to remain in a high-temperature environment for a longer period, thus slowing down the cooling rate of the mold, reducing the number of times the mold needs to be sent to a heating furnace for reheating, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of forging and pressing technology, and in particular to a heating device and mold system for molds. Background Technology

[0002] In some forging processes, the die needs to be heated to about 450°C in a furnace before forging begins. Once the die cools down to below 350°C, forging can no longer continue, and the die needs to be heated back to about 450°C. Because the die cools down very quickly, it needs to be changed frequently, reducing the efficiency of the forging process.

[0003] Some existing forging devices include heating elements that directly or indirectly transfer heat to the die, slowing down its cooling rate. This eliminates the need for frequent die replacements, allowing for continuous forging operations for extended periods and improving work efficiency. Specifically, existing technologies mainly include two heating methods: one is embedding electric heating elements inside the die, which has disadvantages such as uneven heating temperature, high power consumption, difficult maintenance, and high die manufacturing costs; the other is using an external flame torch, which has disadvantages such as localized high temperatures. Direct flame heating can reduce the strength of the die: under direct burning by a high-temperature flame, the strength of steel decreases significantly with rising temperature. When the temperature reaches a critical point, the strength of the steel drops sharply, losing its load-bearing capacity. Localized high temperatures can also cause plastic deformation in the steel, resulting in residual stress after cooling, affecting its structure and performance.

[0004] The shortcomings of existing heating devices include uneven heat distribution, which results in some areas of the mold reaching the required temperature but others not, requiring the mold to still be removed and sent into the heating furnace for heating, leading to a poor user experience. Utility Model Content

[0005] The purpose of this invention is to propose a heating device and system for molds, which solves the problem of uneven heat distribution in existing heating devices and makes them more convenient to use.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A mold heating device includes: a support located on the outside of the mold and having a gap of a predetermined distance between it and the outer wall of the mold; and at least two porous media infrared combustion components respectively disposed on the support, with at least one of the porous media infrared combustion components facing each side of the outer wall of the mold, the outer wall of the mold being within the heat radiation range of the porous media infrared combustion components, and the porous media infrared combustion components used to slow down the cooling rate of the mold.

[0008] In one preferred embodiment, the mold heating device further includes a fan, the support is tubular and has an air passage hole on its outer wall, the air outlet of the fan is connected to the air passage hole through a pipe inside the support, and the fan is used to deliver air into the pipe of the support.

[0009] In one preferred embodiment, the porous media infrared combustion assembly includes a heating end, a fuel inlet end, a mounting base, and a connecting pipe. The fuel inlet end is connected to the heating end through the connecting pipe, and the connecting pipe is connected to the bracket through the mounting base. The mounting base has a base air inlet, and the connecting pipe has a pipe air inlet. The pipe air inlet is connected to the air passage hole through the air inlet.

[0010] In one preferred embodiment, the support includes four tubular sections connected in sequence, and a pivot is provided between at least two adjacent tubular sections, allowing the tubular sections to rotate around the pivot.

[0011] In one preferred embodiment, the mold heating device includes two sets of supports, each set of supports being L-shaped, and the two sets of supports are symmetrically arranged about the center of the mold.

[0012] In one preferred embodiment, the support comprises four tubular sections connected in sequence, each tubular section being provided with at least two of the porous media infrared combustion components, and all the porous media infrared combustion components are arranged symmetrically about the center of the mold.

[0013] On the other hand, the present invention adopts the following technical solution:

[0014] The mold system includes an upper mold and a lower mold, and the mold system further includes at least two sets of the above-mentioned mold heating devices, wherein the support of at least one set of the mold heating devices surrounds the outside of the upper mold, and the support of at least one set of the devices surrounds the outside of the lower mold.

[0015] In one preferred embodiment, a heat insulation element is laid on the porous medium infrared combustion assembly located outside the lower mold. The heat insulation element is used to prevent the heat generated by the porous medium infrared combustion assembly located outside the lower mold from rising upwards.

[0016] In one preferred embodiment, the thermal insulation element includes a metal shell and ceramic fiber cotton filled in the metal shell.

[0017] In one preferred embodiment, the mold system further includes a press, and at least one set of brackets for the mold heating device is fixed on the press, the brackets for the mold heating device being able to move synchronously with the upper mold.

[0018] The mold heating device disclosed in this utility model includes a porous media infrared combustion component, which can generate heat by burning fuel. The heat is more abundant and more uniform, allowing the mold to remain in a high-temperature environment for a longer period of time. This slows down the cooling rate of the mold, reduces the number of times the mold needs to be sent to the heating furnace for heating, and improves work efficiency. The porous media infrared combustion component does not directly contact the mold, effectively slowing down the cooling rate of the mold while leaving space for the mold to be disassembled and assembled, making it more convenient to use and adaptable to the use of molds of various specifications and shapes.

[0019] The mold system disclosed in this utility model includes at least two sets of the above-mentioned mold heating devices, which are used to heat the upper mold and the lower mold respectively. The mold can exchange heat with the porous medium infrared combustion component around its perimeter, further improving the heat uniformity of the mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the mold system provided in a specific embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a heat replenishment device provided in a specific embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of another heating device provided in a specific embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of another heating device provided in a specific embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the porous media infrared combustion assembly provided in a specific embodiment of this utility model;

[0025] Figure 6 This is a bottom view of the porous media infrared combustion assembly provided in a specific embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of a heat-replenishing device with heat insulation components provided in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 1. Support frame; 2. Porous media infrared combustion assembly; 3. Fan; 11. Tubular body; 12. Rotating shaft; 21. Heating end; 22. Fuel inlet end; 23. Mounting base; 24. Connecting pipe; 25. Base air inlet; 26. Heat insulation component; 100. Upper mold; 200. Lower mold. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] This embodiment discloses a heating device for molds and a mold system including the heating device, which can be used, but is not limited to, in forging operations. Figure 1 As shown, the mold system also includes an upper mold 100 and a lower mold 200; as Figure 1 and Figure 2 As shown, the mold heating device includes a support 1 and at least two porous media infrared combustion components 2. The porous media infrared combustion components 2 are mounted on the support 1. At least one set of the support 1 of the mold heating device surrounds the outer side of the upper mold 100, and at least one set of the support 1 surrounds the outer side of the lower mold 200. It is understood that the device for heating the upper mold 100 and the device for heating the lower mold 200 have the same structure. In this embodiment, "mold" refers to both the upper mold 100 and the lower mold 200. The mold heating device can be either the heating device surrounding the upper mold 100 or the heating device surrounding the lower mold 200.

[0036] The porous media infrared combustion component 2 generates heat, which slows down the cooling rate of the mold. The bracket 1 is located on the outside of the mold and has a gap of a set distance between it and the outer wall of the mold, leaving space for the installation of the porous media infrared combustion component 2 and preventing the porous media infrared combustion component 2 from directly contacting the mold. While effectively slowing down the cooling rate of the mold, it also leaves space for the assembly and disassembly of the mold, making it more convenient to use and adaptable to the use of molds of various specifications and shapes.

[0037] The specific distance between the support 1 and the outer wall of the mold is not limited, ensuring that the outer wall of the mold is within the heat radiation range of the porous media infrared combustion component 2. Without affecting the normal operation of the mold, the closer the porous media infrared combustion component 2 is to the mold, the better it is for transferring heat to the mold, resulting in high heat utilization and extending the cooling time of the mold.

[0038] The porous media infrared combustion component 2 generates heat through combustion, producing more and more uniform heat. This allows the mold to remain in a high-temperature environment for an extended period, effectively slowing down the mold's cooling rate and minimizing the time required for the mold to cool from 450℃ to 350℃. This reduces the number of times the mold needs to be sent to the heating furnace, improving work efficiency. Each outer wall of the mold has at least one porous media infrared combustion component 2, ensuring heat exchange with the component from all sides, further enhancing heat uniformity across the mold.

[0039] Based on the above structure, the mold heating device also includes a fan 3. The support 1 is a hollow tube with air passage holes on its outer wall. The air outlet of the fan 3 is connected to the air passage holes through a pipe inside the support 1, and the fan 3 is used to supply air into the pipes of the support 1. The airflow can be delivered to the interior of the porous media infrared combustion assembly 2 through the air passage holes, serving as the combustion-supporting gas for porous media combustion. The complete combustion of the gas can enable the porous media infrared combustion assembly 2 to generate more heat or allow the heat to reach the mold more and faster, thereby slowing down the cooling rate of the mold.

[0040] The specific structure of the fan 3 is not limited; it can be, but is not limited to, a centrifugal fan, as long as it can force air into the pipe of the support 1. The specific structure of the pipe inside the support 1 is not limited; it can ensure that the gas flows along a set route and prevents air leakage. In this embodiment, a flexible metal tube is installed inside the hollow tube of the support 1, and the air outlet of the fan 3 is connected to the end of the flexible metal tube. After the fan 3 is started, it can blow air into the flexible metal tube.

[0041] The specific installation location of the mold heating device is not limited, as long as it does not affect the normal operation of the mold and can slow down the cooling rate of the mold. In this embodiment, the mold system also includes a press, and the upper mold 100 is detachably mounted on the press. At least one set of brackets 1 for the mold heating device is fixed on the platform of the press, and the brackets 1 for the mold heating device can move synchronously with the upper mold 100 during the up and down movement of the upper mold 100.

[0042] Installing the mold heating device on the press instead of on the mold itself does not affect the removal of the upper mold 100 with a temperature lower than the set value from the press and sending it for heating, making it more convenient to use. Only one set of mold heating devices needs to be configured on one press. When one upper mold 100 is sent for heating, the other upper mold 100 can be installed on the press to work, improving work efficiency and reducing costs.

[0043] The specific connection structure between the mold heating device and the press is not limited. Any structure that can stably connect the mold heating device and the press is acceptable, and it can be, but is not limited to, bolted connection or welding.

[0044] The specific shape of the heating device for the mold is not limited; one structure is as follows: Figure 2 As shown, the support 1 includes four tubular sections 11 connected in sequence. Each tubular section 11 is provided with at least two porous media infrared combustion components 2. All the porous media infrared combustion components 2 are symmetrically arranged about the center of the mold, so that the heat distribution around the mold is more uniform, thereby improving the temperature uniformity of the mold.

[0045] In this embodiment, both the upper mold 100 and the lower mold 200 are cubic in shape. The support 1 used to heat the upper mold 100 is basically rectangular, with four porous media infrared combustion components 2 arranged on each side, distributing them to provide infrared radiation heating to the four sides of the upper mold 100. All the porous media infrared combustion components 2 are symmetrically distributed about the center of the upper mold 100, making the temperature on the mold more uniform. Correspondingly, the support 1 used to heat the lower mold 200 is also basically rectangular, with four porous media infrared combustion components 2 arranged on each side, and all the porous media infrared combustion components 2 are symmetrically distributed about the center of the lower mold 200.

[0046] Another structure, such as Figure 3 As shown, the support 1 includes four tubular sections 11 connected in sequence. A pivot 12 is provided between at least two adjacent tubular sections 11, allowing the tubular sections 11 to rotate around the pivot 12. Rotating the tubular sections 11 outward creates a gap in the space enclosed by the support 1, allowing the mold to enter and exit the space, facilitating mold assembly and disassembly. After the mold is installed, rotating the tubular sections 11 inward allows the porous medium infrared combustion component 2 on the tubular sections 11 to face one side of the mold, without affecting infrared radiation heating of the mold side.

[0047] Another structure is as follows Figure 4 As shown, the mold heating device includes two sets of opposing supports 1, each with an independent fan 3 mounted on it. Each set of supports 1 is L-shaped, and the two sets of supports 1 are symmetrically arranged about the center of the mold. After assembly, the two sets of supports 1 basically form a rectangle, and the mold is located in the space enclosed by the two sets of supports 1. When it is necessary to disassemble or assemble the mold, one set of supports 1 can be removed, making it more convenient to use.

[0048] A gap is left between the two sets of supports 1. When the size of the mold becomes smaller, the two sets of supports 1 are moved closer to the center of the mold to reduce the distance between the porous media infrared combustion component 2 and the outer surface of the mold. This allows more heat generated by the porous media infrared combustion component 2 to reach the mold and slows down the cooling rate of the mold.

[0049] The specific structure for achieving "support 1 moving closer to the mold center" is not limited. In this embodiment, a track is provided at the press platform or other locations, and the distance between different points on the track and the mold center is different. Support 1 is connected to the track and can move along the track, thereby changing the distance between support 1 and the mold center.

[0050] The specific structure of the porous media infrared combustion assembly 2 is not limited; any existing device with infrared radiation heating function can be used. In this embodiment, for example... Figure 5 and Figure 6 As shown, the porous media infrared combustion assembly 2 includes a heating end 21, a fuel inlet end 22, a mounting base 23, and a connecting pipe 24. The fuel inlet end 22 is connected to the heating end 21 via the connecting pipe 24. Fuel enters the heating end 21 through the fuel inlet end 22 and burns within the heating end 21 to generate heat. The connecting pipe 24 is fixedly connected to the bracket 1 via the mounting base 23, forming an integral structure with the bracket 1. This ensures greater stability and safer operation for the heating end 21, fuel inlet end 22, and connecting pipe 24.

[0051] The mounting base 23 has a base air inlet 25, and the connecting pipe 24 has a pipe air inlet. The pipe air inlet is connected to the air passage hole through the air inlet 25. (Fan 3, e.g.) Figure 2 As shown, air can be supplied to the connecting pipe 24 through the pipe, air passage, air inlet 25 and pipe air inlet in the bracket 1, so that the fuel can burn more completely in the heating end 21 and the energy utilization rate is high.

[0052] When the porous media infrared combustion component 2 is working, the PMC porous media combustion continuously generates thermal radiation and high-temperature flue gas, which rise upwards. For example... Figure 7 As shown, a heat insulation component 26 is laid on the porous media infrared combustion assembly 2 located outside the lower mold 200. The heat insulation component 26 is used to prevent the heat and high-temperature flue gas generated by the porous media infrared combustion assembly 2 located outside the lower mold 200 from rising upwards, thus preventing the upward hot flue gas from baking the porous media infrared combustion assembly 2 located above. High-temperature flue gas would cause its outer shell to heat up significantly, affecting the backfire prevention effect and also affecting the thermocouples, ignition needles, and other devices installed on it. In other words, the heat insulation component 26 is beneficial to the backfire prevention of the upper porous media infrared combustion assembly 2 and extends the life of the equipment's supporting components, thereby improving product quality and yield.

[0053] Since the heat generated by the porous media infrared combustion component 2 of the upper mold 100 will not be conducted downwards to the space between the upper mold 100 and the lower mold 200, no heat insulation is required. It is understandable that if the heat generated by the porous media infrared combustion component 2 of the upper mold 100 rises upwards and affects the normal operation of other surrounding devices, a device similar to a heat insulation component 26 can be installed on the porous media infrared combustion component 2 of the upper mold 100.

[0054] The specific structure of the heat insulation component 26 is not limited. In this embodiment, the heat insulation component 26 includes a metal shell and ceramic fiber cotton filled in the metal shell. The metal shell is preferably made of 3mm stainless steel plate, which has a good heat insulation effect.

[0055] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A heating device for molds, characterized in that, include: The bracket (1) is located on the outside of the mold and has a gap of a set distance value between it and the outer wall of the mold; as well as, At least two porous media infrared combustion components (2) are respectively disposed on the support (1). Each side of the outer wall of the mold faces at least one of the porous media infrared combustion components (2). The outer wall of the mold is located within the heat radiation range of the porous media infrared combustion component (2). The porous media infrared combustion component (2) is used to slow down the cooling rate of the mold.

2. The mold heating device according to claim 1, characterized in that, The heating device for the mold also includes a fan (3). The support (1) is tubular and has an air passage hole on its outer wall. The air outlet of the fan (3) is connected to the air passage hole through a pipe inside the support (1). The fan (3) is used to send air into the pipe of the support (1).

3. The mold heating device according to claim 2, characterized in that, The porous medium infrared combustion assembly (2) includes a heating end (21), a fuel inlet end (22), a mounting base (23), and a connecting pipe (24). The fuel inlet end (22) is connected to the heating end (21) through the connecting pipe (24). The connecting pipe (24) is connected to the bracket (1) through the mounting base (23). The mounting base (23) has a base air inlet (25). The connecting pipe (24) has a pipe air inlet. The pipe air inlet is connected to the air passage hole through the air inlet (25).

4. The mold heating device according to claim 1, characterized in that, The support (1) includes four tubular sections (11) connected in sequence, and a pivot (12) is provided between at least two adjacent tubular sections (11), and the tubular sections (11) can swing around the pivot (12).

5. The mold heating device according to claim 1, characterized in that, The heating device for the mold includes two sets of brackets (1), each set of brackets (1) is L-shaped, and the two sets of brackets (1) are symmetrically arranged about the center of the mold.

6. The mold heating device according to any one of claims 1 to 5, characterized in that, The support (1) includes four tubular sections (11) connected in sequence. Each tubular section (11) is provided with at least two porous media infrared combustion components (2). All the porous media infrared combustion components (2) are arranged symmetrically about the center of the mold.

7. A mold system comprising an upper mold (100) and a lower mold (200), characterized in that, The mold system further includes at least two sets of mold heating devices as described in any one of claims 1 to 6, wherein at least one set of the mold heating device brackets (1) surrounds the outside of the upper mold (100), and at least one set of the brackets (1) surrounds the outside of the lower mold (200).

8. The mold system according to claim 7, characterized in that, A heat insulation element (26) is laid on the porous medium infrared combustion assembly (2) located outside the lower mold (200). The heat insulation element (26) is used to prevent the heat generated by the porous medium infrared combustion assembly (2) located outside the lower mold (200) from rising upwards.

9. The mold system according to claim 8, characterized in that, The heat insulation component (26) includes a metal shell and ceramic fiber cotton filled in the metal shell.

10. The mold system according to any one of claims 7 to 9, characterized in that, The mold system also includes a press, and at least one set of brackets (1) for the mold heating device is fixed on the press. The brackets (1) for the mold heating device can move synchronously with the upper mold (100).

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