Cooling device for cutter heat treatment production line

Abstract

The utility model relates to a cooling device for a cutter heat treatment production line. The cooling device comprises a cooling box body, a cutter conveying structure is arranged in the cooling box body, and the cooling box body is provided with a butt joint end used for being in butt joint with the heat treatment furnace and a sending-out end used for sending out a cutter. The butt joint end is provided with a protective gas feeding structure, and the delivery end is provided with a protective gas recovery structure. The cooling device is arranged at the rear end of the heat treatment furnace, after the treatment time is over, the cutter in the heat treatment furnace is conveyed to the cutter conveying structure in the cooling box body through the outlet, protective gas is conveyed through the protective gas feeding structure, and the protective gas is recycled through the protective gas recycling structure. The to-be-cooled tool on the tool conveying structure is cooled and protected through the protective gas, the cooling speed of the tool can be increased, carbide precipitation along crystals is reduced, meanwhile, the protective gas is used for protecting the tool in the cooling stage, and oxidation is prevented in the stage.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a cooling device for a tool heat treatment production line. Background Art

[0002] In recent years, with the development of knife and scissors companies, the heat treatment process for cutting tools has moved away from the traditional large-box heating furnace production and into assembly line operations using conveyor belts as transportation tools. Modern heat treatment lines adjust the heat treatment holding time of cutting tools by adjusting the movement speed of the conveyor belt. After leaving the furnace, they enter the cooling stage. To prevent oxidation, this stage is also sealed, and most of them are carried out in a sealed box. The cooling method is to cool the sealed box through circulating water to reduce the internal temperature. However, this structure can only achieve relatively rapid cooling in the initial stage of the production line operation. In the subsequent production process, the heat brought by the knives out of the furnace far exceeds the mass that can be removed by the circulating water, resulting in excessively high temperature in the cooling box, slow cooling of the tool, and abnormal structure, which in turn affects the performance of the tool. Utility Model Content

[0003] The purpose of the utility model is to provide a cooling device for a tool heat treatment production line to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution for a cooling device for a tool heat treatment production line: a cooling device for a tool heat treatment production line, comprising a cooling box, a tool transmission structure is provided in the cooling box, the cooling box has a docking end for docking with a heat treatment furnace and a delivery end for delivering the tool; the docking end is provided with a protective gas delivery structure, and the delivery end is provided with a protective gas recovery structure, and the heat is taken away by the flow of protective gas to cool the tool to be cooled.

[0005] The protective gas supply structure includes an air supply pipe, one end of which is used to connect with the protective gas source. An air outlet structure is provided on the air supply pipe, and the lower end of the air outlet structure has a long strip air outlet with a length perpendicular to the tool conveying direction.

[0006] The air outlet structure includes an arc-shaped air supply plate connected to the air supply pipe, the arc-shaped air supply plate has a first hollow cavity with openings at both ends, and the air supply pipe is provided with a first connecting long hole extending along its length direction to connect the air supply pipe and the first hollow cavity, and the lower end of the arc-shaped air supply plate blows air obliquely downward along the transmission direction of the tool.

[0007] The protective gas feeding structure includes a first shell connecting the heat treatment furnace and the cooling box, an air supply pipe is arranged on the first shell, and a first cooling fan is arranged on the top plate inside the first shell.

[0008] The protective gas recovery structure includes an exhaust pipe, one end of which is used to connect with the protective gas recovery equipment. An exhaust port structure is provided on the exhaust pipe, and the lower end of the exhaust port structure has a long strip air outlet with a length perpendicular to the tool conveying direction.

[0009] The exhaust port structure includes an arc-shaped exhaust plate connected to the exhaust pipe, the arc-shaped exhaust plate having a second hollow cavity with openings at both ends, and a second connecting long hole extending along the length direction of the exhaust pipe to connect the exhaust pipe and the second hollow cavity, and the lower end of the arc-shaped exhaust plate draws air obliquely upward along the transmission direction of the tool.

[0010] The protective gas recovery structure includes a second shell, an exhaust pipe is arranged on the second shell, and a second cooling fan is arranged on the top plate inside the second shell.

[0011] A third cooling fan is provided on the top plate of the cooling box.

[0012] The protective gas delivery structure includes a first shell, a first cavity is provided in the upper part of the first shell, an air inlet is provided on the first shell for the entry of protective gas, and an air outlet is provided on the lower cavity wall of the first cavity inside the first shell; an arc-shaped air outlet plate is provided below the air outlet, the arc-shaped air outlet plate has a first ventilation cavity with openings at both ends, the upper end of the arc-shaped air outlet plate is connected to the air outlet, and the lower end of the arc-shaped air outlet plate blows air obliquely downward along the transmission direction of the tool.

[0013] The protective gas recovery structure includes a second shell, a second cavity is provided in the upper part of the second shell, an air return port is provided on the second shell for connecting to the gas recovery equipment, and an air exhaust port is provided on the lower cavity wall of the second cavity inside the second shell; an arc-shaped return air plate is provided below the air exhaust port, the arc-shaped return air plate has a second ventilation cavity with openings at both ends, the upper end of the arc-shaped return air plate is connected to the air exhaust port, and the lower end of the arc-shaped return air plate draws air obliquely upward along the transmission direction of the tool.

[0014] The beneficial effects of the present invention are as follows: the cooling device of the present invention is arranged at the rear end of the heat treatment furnace, and after the treatment time is over, the tool in the heat treatment furnace is transported from the outlet to the tool transmission structure in the cooling box, the protective gas is transported through the protective gas delivery structure, and the protective gas is recovered by the protective gas recovery structure. The tool to be cooled on the tool transmission structure is cooled and protected by the protective gas, which not only accelerates the cooling speed of the tool and reduces the precipitation of carbides along the crystal, but also utilizes the protective gas to protect the tool in the cooling stage to prevent oxidation at this stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a first embodiment of a cooling device for a tool heat treatment production line according to the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0017] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0018] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0019] Figure 5 This is a schematic diagram of the internal structure of a second embodiment of a cooling device for a tool heat treatment production line according to the present invention;

[0020] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle;

[0021] Figure 7 yes Figure 5 A partial enlarged view of point D in the middle. DETAILED DESCRIPTION

[0022] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0023] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] The first embodiment of the cooling device for a tool heat treatment production line of the present utility model is as follows: Figures 1-4 As shown, it includes a cooling box 1, in which a tool transmission structure 5 is provided, and the tool transmission structure adopts a metal conveyor belt. The cooling box has a docking end for docking with the heat treatment furnace 2 and a delivery end for delivering the tool. The metal conveyor belt in the heat treatment furnace and the metal conveyor belt in the cooling box can be the same conveyor belt or can be separate conveyor belts. The docking end of the cooling box is provided with a protective gas delivery structure 6, and the delivery end is provided with a protective gas recovery structure 7. In this embodiment, the heat is taken away by the flow of protective gas to cool the tool to be cooled, and at the same time, the surface of the tool is protected to prevent oxidation. In this embodiment, nitrogen is used as the protective gas.

[0025] Specifically, in this embodiment, the protective gas feeding structure 6 includes an air supply pipe 8, one end of which is used to connect to the protective gas source, and the protective gas source can be a compressed gas cylinder. An air outlet structure is provided on the air supply pipe, and the lower end 13 of the air outlet structure has a long strip air outlet with a length perpendicular to the tool conveying direction, which can not only increase the air output, but also allow the protective gas to quickly spread across the cooling box to ensure the cooling effect. Specifically, the air outlet structure includes an arc-shaped air supply plate 11 connected to the air supply pipe, and the arc-shaped air supply plate has a first hollow cavity 12 with openings at both ends. The air supply pipe 8 is provided with a first connecting long hole 10 extending along its length direction to connect the air supply pipe 8 and the first hollow cavity 12, and the lower end of the arc-shaped air supply plate 11 blows air obliquely downward along the transmission direction of the tool.

[0026] In this embodiment, the protective gas recovery structure 7 includes an exhaust pipe 9, one end of which is used to connect to the protective gas recovery equipment. An exhaust port structure is provided on the exhaust pipe, and the lower end 19 of the exhaust port structure has a long strip of air outlet with a length perpendicular to the tool conveying direction. Specifically, the exhaust port structure includes an arc-shaped exhaust plate 16 connected to the exhaust pipe, and the arc-shaped exhaust plate has a second hollow cavity 17 with openings at both ends. The exhaust pipe is provided with a second connecting long hole 18 extending along its length direction to connect the exhaust pipe 9 and the second hollow cavity 17, and the lower end of the arc-shaped exhaust plate draws air obliquely upward along the conveying direction of the tool. The arrangement of the arc-shaped air supply plate and the arc-shaped exhaust plate can guide the protective gas to form a circulation and ensure the cooling effect.

[0027] In this embodiment, the protective gas supply structure 6 includes a first shell 14 connecting the heat treatment furnace 2 and the cooling box 1, the air supply pipe 8 is arranged on the first shell 14, and a first cooling fan 15 is arranged on the top plate inside the first shell. The protective gas recovery structure includes a second shell 20, the exhaust pipe is arranged on the second shell, and a second cooling fan 24 is arranged on the top plate inside the second shell. The arrangement of the first cooling fan 15 and the second cooling fan 21 can increase the gas flow rate to improve the cooling speed. In order to increase the cooling speed, a third cooling fan can also be arranged on the top plate of the cooling box. Furnace doors 3 are provided at both ends of the heat treatment furnace, and a box door 4 is provided at the rear end of the cooling box.

[0028] During use, the tool first travels along a conveyor belt through a heat treatment furnace. The heat treatment process is adjusted to achieve optimal performance by adjusting the conveyor belt speed and furnace temperature. The tool then enters a cooling chamber, where a specific protective atmosphere is used to protect the tool surface and prevent oxidation during the cooling process. A cooling fan is also added to increase the gas flow rate to speed up the cooling process. Curved air supply and exhaust plates are provided to circulate the protective gas and ensure effective cooling. This cooling device accelerates the cooling process during the heat treatment process, reduces carbide precipitation, and protects the tool during the cooling phase with a protective atmosphere, preventing oxidation and thus preventing the formation of thick oxide scale on the tool.

[0029] The second embodiment of the cooling device for a tool heat treatment production line of the present utility model is as follows: Figure 5-Figure 7 As shown, the difference from Example 1 lies in the specific structures of the shielding gas supply structure 6 and the shielding gas recovery structure 7. Specifically, in this embodiment, the shielding gas supply structure 6 comprises a first housing 22, the upper portion of which is provided with a first cavity 23. The first housing is provided with an air inlet for shielding gas entry, and an air outlet 26 is provided on the lower wall of the first cavity within the first housing. Below the air outlet is a curved air outlet plate 24, which has a first ventilation cavity 25 with two open ends. The upper end of the curved air outlet plate 24 is connected to the air outlet 26, and the lower end of the curved air outlet plate 24 blows air diagonally downward in the direction of tool transport. Both the air outlet 26 and the lower end outlet of the curved air outlet plate are elongated structures with a length perpendicular to the tool transport direction. The shielding gas recovery structure comprises a second housing 27, the upper portion of which is provided with a second cavity 28. The second housing is provided with an air return port for connection to the gas recovery equipment, and an air extraction port 31 is provided on the lower wall of the second cavity within the second housing. A curved return air plate 29 is located below the air extraction port. This plate has a second ventilation cavity 30 with openings at both ends. The upper end of the curved return air plate communicates with the air extraction port, while the lower end of the curved return air plate draws air diagonally upward along the direction of tool transport. Both the air extraction port and the lower outlet of the curved return air plate are elongated, extending perpendicularly to the tool transport direction.

[0030] In the above description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal connection between two components or the interaction between two components. Therefore, unless otherwise expressly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0032] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

Claims

1. A cooling device for a tool heat treatment production line, characterized in that: It includes a cooling box body, in which a tool transmission structure is provided. The cooling box body has a docking end for docking with a heat treatment furnace and an outlet end for sending out the tool; the docking end is provided with a protective gas delivery structure, and the outlet end is provided with a protective gas recovery structure. The heat is taken away by the flow of protective gas to cool the tool to be cooled.

2. The cooling device for a tool heat treatment production line according to claim 1, characterized in that: The protective gas supply structure includes an air supply pipe, one end of which is used to connect with the protective gas source. An air outlet structure is provided on the air supply pipe, and the lower end of the air outlet structure has a long strip air outlet with a length perpendicular to the tool conveying direction.

3. The cooling device for a tool heat treatment production line according to claim 2, characterized in that: The air outlet structure includes an arc-shaped air supply plate connected to the air supply pipe, the arc-shaped air supply plate has a first hollow cavity with openings at both ends, and the air supply pipe is provided with a first connecting long hole extending along its length direction to connect the air supply pipe and the first hollow cavity, and the lower end of the arc-shaped air supply plate blows air obliquely downward along the transmission direction of the tool.

4. The cooling device for a tool heat treatment production line according to claim 2, characterized in that: The protective gas feeding structure includes a first shell connecting the heat treatment furnace and the cooling box, an air supply pipe is arranged on the first shell, and a first cooling fan is arranged on the top plate inside the first shell.

5. The cooling device for a tool heat treatment production line according to claim 2, 3 or 4, characterized in that: The protective gas recovery structure includes an exhaust pipe, one end of which is used to connect with the protective gas recovery equipment. An exhaust port structure is provided on the exhaust pipe, and the lower end of the exhaust port structure has a long strip air outlet with a length perpendicular to the tool conveying direction.

6. The cooling device for a tool heat treatment production line according to claim 5, characterized in that: The exhaust port structure includes an arc-shaped exhaust plate connected to the exhaust pipe, the arc-shaped exhaust plate having a second hollow cavity with openings at both ends, and a second connecting long hole extending along the length direction of the exhaust pipe to connect the exhaust pipe and the second hollow cavity, and the lower end of the arc-shaped exhaust plate draws air obliquely upward along the transmission direction of the tool.

7. The cooling device for a tool heat treatment production line according to claim 5, characterized in that: The protective gas recovery structure includes a second shell, an exhaust pipe is arranged on the second shell, and a second cooling fan is arranged on the top plate inside the second shell.

8. The cooling device for a tool heat treatment production line according to claim 1, characterized in that: A third cooling fan is provided on the top plate of the cooling box.

9. The cooling device for a tool heat treatment production line according to claim 1, characterized in that: The protective gas delivery structure includes a first shell, a first cavity is provided in the upper part of the first shell, an air inlet is provided on the first shell for the entry of protective gas, and an air outlet is provided on the lower cavity wall of the first cavity inside the first shell; an arc-shaped air outlet plate is provided below the air outlet, the arc-shaped air outlet plate has a first ventilation cavity with openings at both ends, the upper end of the arc-shaped air outlet plate is connected to the air outlet, and the lower end of the arc-shaped air outlet plate blows air obliquely downward along the transmission direction of the tool.

10. The cooling device for a tool heat treatment production line according to claim 1 or 9, characterized in that: The protective gas recovery structure includes a second shell, a second cavity is provided in the upper part of the second shell, an air return port is provided on the second shell for connecting to the gas recovery equipment, and an air exhaust port is provided on the lower cavity wall of the second cavity inside the second shell; an arc-shaped return air plate is provided below the air exhaust port, the arc-shaped return air plate has a second ventilation cavity with openings at both ends, the upper end of the arc-shaped return air plate is connected to the air exhaust port, and the lower end of the arc-shaped return air plate draws air obliquely upward along the transmission direction of the tool.

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