Vacuum heat treatment equipment for mold

Abstract

The invention relates to the field of workpiece heat treatment, in particular to mold vacuum heat treatment equipment which comprises a vacuum heat treatment tank and a water tank, a side door is rotatably connected to the inner wall of the vacuum heat treatment tank, two magnetic plates are mounted on the outer wall of the side door, and the two magnetic plates are attached to the outer wall of the vacuum heat treatment tank; hot air generated during heat treatment in the vacuum heat treatment tank body can be conducted into the interlayer through the air guide pipe, then heat conduction treatment can be conducted on water in the water tank, the temperature difference between hot water and a high-temperature mold is smaller, the slow cooling effect can relieve concentration of thermal stress and phase change stress, the cracking risk can be remarkably reduced, and the service life of the water tank is prolonged. And a water pump is driven to work, water in a water tank is discharged into a rotating pipe and a positioning pipe through a connecting pipe, water can be further sprayed to the heat-treated mold through a high-temperature-resistant spray head, on one hand, the heat-treated mold can be cooled, and impurities attached to the surface of the heat-treated mold can be washed away.

Description

Technical Field

[0001] This invention relates to the field of workpiece heat treatment, and more particularly to a vacuum heat treatment device for molds. Background Technology

[0002] Mold steel is used in the manufacture of molds, accessories, tools and other products. It has the characteristics of high strength and wear resistance. Mold steel is mostly cylindrical. Vacuum heat treatment refers to the heat treatment process in which all or part of the process is carried out in a vacuum. It can achieve rapid heating and cooling, and achieve no oxidation, no decarburization and no carburization. It can also remove phosphorus scale from the surface of the workpiece.

[0003] Existing vacuum heat treatment equipment requires cooling after mold material treatment. However, in traditional cooling processes, manual intervention is required. After heat treatment, operators manually pour water onto the hot mold surface to cool it down. When the high-temperature mold comes into contact with cold water, it instantly triggers a violent vaporization reaction, forming a large amount of white mist. This mist is not simply water vapor, but a mixed aerosol of quenching oil, release agent, and pollutants (such as hydrocarbons, benzene compounds, and heavy metal oxides) that remain on the mold surface at high temperatures and have not been completely volatilized during the heat treatment process. If operators are exposed to this mist for a long time, it will pose a continuous threat to their health and life. At the same time, the large temperature difference between the cold water poured on the mold and the mold can lead to the concentration of alternating stress and the risk of cracking.

[0004] Therefore, a vacuum heat treatment device for molds was designed. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a vacuum heat treatment device for molds.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution; To achieve the above objectives, the present invention adopts the following technical solution: A mold vacuum heat treatment device includes: a vacuum heat treatment tank and a water tank; a side door is rotatably connected to the inner wall of the vacuum heat treatment tank, and two magnetic suction plates are installed on the outer wall of the side door, with the two magnetic suction plates abutting against the outer wall of the vacuum heat treatment tank; it also includes: a rotating tube rotatably connected to the inner wall of the vacuum heat treatment tank, with a cooling component connected to the inner wall of the rotating tube for spraying water onto the mold being heat treated inside the vacuum heat treatment tank; and a drive component installed outside the vacuum heat treatment tank for driving the rotating tube. The device rotates inside a vacuum heat treatment tank. A partition is installed along the outer edge of the tank, and one end of a gas guide pipe is fixedly connected to the inner wall of the partition. The other end of the gas guide pipe communicates with the interior of the vacuum heat treatment tank. A positioning assembly is installed on the outer edge of the rotating tube. This positioning assembly is used to clamp and position the mold requiring heat treatment. An exhaust gas outlet is provided on one side of the vacuum heat treatment tank. A filter assembly is installed on the outer wall of the vacuum heat treatment tank corresponding to the exhaust gas outlet. This filter assembly is used to filter the exhaust gas emitted after heat treatment inside the vacuum heat treatment tank.

[0007] Preferably, the cooling component includes a connecting pipe rotatably connected to the inner wall of a rotating pipe, a water tank fixedly connected to the end of the connecting pipe away from the rotating pipe, a water pump installed on the outer edge of the connecting pipe, a connecting pipe fixedly connected to one end of the connecting pipe, and a positioning pipe fixedly connected to the other end of the connecting pipe, multiple high-temperature resistant nozzles installed on the outer edge of the positioning pipe, all of which are installed on the inner wall of the vacuum heat treatment tank, the positioning pipe fixed to the outer edge of the vacuum heat treatment tank, a drain pipe installed at the bottom of the vacuum heat treatment tank, and a valve rotatably installed on the inner wall of the drain pipe.

[0008] Preferably, a positioning frame is installed on the inner wall of the vacuum heat treatment tank, the rotating tube is rotatably connected to the inner wall of the positioning frame, a bearing is installed on the side wall of the vacuum heat treatment tank, and the outer edge of the rotating tube is fixedly connected to the inner ring of the bearing.

[0009] Preferably, the drive assembly includes a servo motor, which is mounted on the outside of the vacuum heat treatment tank. A gear is fixedly connected to the power output shaft of the servo motor. A gear is mounted on the outer edge of the rotating tube. The gears mesh with each other. A transmission wheel is mounted on the outer edge of the rotating tube. A fixed disk is mounted on the outer wall of the vacuum heat treatment tank. A transmission wheel is also rotatably connected to the outer side of the fixed disk. A transmission belt is fitted on the inner wall of the two transmission wheels. A high-temperature resistant fan is rotatably connected to the side of the fixed disk away from the transmission wheel. The rotating shaft of the high-temperature resistant fan is fixedly connected to the transmission wheel. The high-temperature resistant fan is located on the inner wall of the vacuum heat treatment tank.

[0010] Preferably, a mounting bracket is installed on the outer side of the vacuum heat treatment tank, and the end of the connecting pipe near the rotating tube is installed on the inner wall of the mounting bracket.

[0011] Preferably, the positioning component includes a placement frame, which is fixed to the outer edge of the rotating tube. The inner wall of the placement frame has multiple through slots. An electric push rod is installed on the top of the placement frame. The output shaft of the electric push rod is fixedly connected to a pressure plate. One end of a return spring is fixedly connected to the top of the pressure plate. The other end of the return spring is fixedly connected to the inner top of the placement frame.

[0012] Preferably, the inner wall of the rotating tube has a water outlet hole that communicates with the inner wall of the placement rack, and a scraper is installed on the outside of the placement rack, with the top of the scraper in contact with the inner wall of the vacuum heat treatment tank.

[0013] Preferably, the filter assembly includes a frame, with a partition installed on the inner wall of the frame, a plurality of cooling strips installed on one side of the partition, a cross-shaped structure installed on the inner wall of the frame, and a coarse filter layer, an activated carbon adsorption layer, and a fine filter layer sequentially installed on the side of the cross-shaped structure away from the partition. An abutment frame is installed on the outer wall of the fine filter layer, and a bolt is threadedly connected to the inner wall of the abutment frame, with the bolt threaded to the inner wall of the cross-shaped structure. An interception assembly for blocking exhaust gas is installed on the inner wall of the frame.

[0014] Preferably, the interception component includes a baffle that is slidably connected to the inner wall of the frame. A bracket is installed on the top of the frame, and a rotary motor is installed on the top of the bracket. A lead screw is fixedly connected to the power output shaft of the rotary motor. A slider is threadedly connected to the outer edge of the lead screw. The outer side of the slider is fixedly connected to the outer wall of the baffle. The position of the baffle corresponds to that of the exhaust gas outlet, and the size of the baffle is larger than the internal size of the exhaust gas outlet.

[0015] Preferably, a limiting rod is installed on the inner wall of the bracket, the slider is slidably connected to the limiting rod, and the bottom end of the lead screw is rotatably connected to the inner bottom of the bracket.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a venting pipe to conduct hot air from the vacuum heat treatment tank to the interior of the partition layer, which can then be used to conduct heat to the water inside the tank. This reduces the temperature difference between the hot water and the high-temperature mold, and this "slow cooling" effect alleviates the concentration of thermal stress and phase transformation stress, significantly reducing the risk of cracking. A water pump drives the water from the tank to be discharged through connecting pipes into the rotating and positioning pipes. High-temperature resistant nozzles can then spray water onto the heat-treated mold (within the sealed space), cooling the mold and rinsing off any impurities adhering to its surface. Water from the rotating pipe can also be discharged through outlets, allowing it to contact the bottom of the mold for further cooling, reducing cooling blind spots and ensuring thorough cooling without the need for manual water application. This effectively avoids the safety risks of workers being exposed to harmful fumes for extended periods.

[0017] This invention drives a servo motor to rotate a gear, which in turn drives a rotating tube to achieve positional rotation. Furthermore, a transmission wheel and belt transmit the rotational force to a high-temperature fan. The fan generates airflow to blow air into the vacuum heat treatment tank, increasing airflow and ensuring rapid heat distribution to all corners. This also ensures uniform heating of the molds and allows for easy adjustment of the mold positions within the rack. Additionally, the coarse filter, activated carbon adsorption layer, and fine filter effectively intercept floating particles and impurities in the exhaust gas, preventing them from directly dispersing into the air and causing environmental pollution. This also prevents workers from accidentally inhaling these substances, which could threaten their health. Simultaneously, cooling strips effectively cool the exhaust gas as it passes through the baffles, ensuring a low-temperature exhaust and preventing damage to the coarse filter, activated carbon adsorption layer, and fine filter layer from excessively high temperatures. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the cross-sectional structure of the vacuum heat treatment tank of the present invention; Figure 4 This is a schematic diagram of the exhaust gas outlet structure of the present invention; Figure 5 This is a schematic diagram of the air duct structure of the present invention; Figure 6 This is a schematic cross-sectional view of the placement rack of the present invention; Figure 7 This is a schematic diagram of the high-temperature resistant fan structure of the present invention.

[0020] Figure 8 This is a schematic diagram of the cooling component structure of the present invention.

[0021] Figure 9 This is a schematic diagram of the cross-sectional structure of the frame of the present invention.

[0022] Figure 10 This is a schematic diagram of the refrigeration bar structure of the present invention.

[0023] Figure 11 This is a schematic diagram of the abutment frame structure of the present invention.

[0024] Drawing number descriptions: 1. Vacuum heat treatment tank; 2. Side door; 3. Magnetic suction plate; 4. Rotating tube; 5. Positioning frame; 6. Bearing; 7. Servo motor; 8. Gear 1; 9. Gear 2; 10. Transmission wheel; 11. Transmission belt; 12. Fixed plate; 13. High-temperature resistant fan; 14. Mounting bracket; 15. Water tank; 16. Connecting pipe; 17. Connecting pipe; 18. Positioning pipe; 19. High-temperature resistant nozzle; 20. Water pump; 21. Partition; 22. Air guide pipe 23. Placement rack; 24. Electric push rod; 25. Pressure plate; 26. Return spring; 27. Water outlet; 28. Scraper; 29. ​​Drain pipe; 30. Exhaust gas outlet; 31. Frame; 32. Baffle; 33. Support; 34. Rotary motor; 35. Lead screw; 36. Slider; 37. Partition; 38. Refrigeration bar; 39. Cross-shaped element; 40. Coarse filter layer; 41. Activated carbon adsorption layer; 42. Fine filter layer; 43. Abutment frame; 44. Bolt. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0027] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0029] Please see Figure 1-11 A mold vacuum heat treatment device includes: a vacuum heat treatment tank 1 and a water tank 15. A side door 2 is rotatably connected to the inner wall of the vacuum heat treatment tank 1, and two magnetic suction plates 3 are installed on the outer wall of the side door 2, with the two magnetic suction plates 3 adhering to the outer wall of the vacuum heat treatment tank 1. It also includes: a rotating tube 4 rotatably connected to the inner wall of the vacuum heat treatment tank 1, with a cooling component connected to the inner wall of the rotating tube 4 for spraying water onto the mold undergoing heat treatment inside the vacuum heat treatment tank 1; and a drive component installed outside the vacuum heat treatment tank 1 for driving the rotating tube 4. The rotating tube 4 rotates inside the vacuum heat treatment tank 1; a partition 21 is installed on the outer edge of the water tank 15, and one end of the air guide pipe 22 is fixedly connected to the inner wall of the partition 21, and the other end of the air guide pipe 22 is connected to the inside of the vacuum heat treatment tank 1; and a positioning component is installed on the outer edge of the rotating tube 4, which is used to clamp and position the mold that needs to be heat treated; a waste gas outlet 30 is opened on one side of the vacuum heat treatment tank 1, and a filter component is installed on the outer wall of the vacuum heat treatment tank 1 corresponding to the waste gas outlet 30, which is used to filter the waste gas emitted after heat treatment inside the vacuum heat treatment tank 1; In this solution, the magnetic force of the magnetic suction plate 3 and the magnetic material of the vacuum heat treatment tank 1 are used to ensure that the magnetic suction plate 3 and the vacuum heat treatment tank 1 are stably connected, ensuring that the side door 2 is inside the vacuum heat treatment tank 1 and will not easily shift its position. At the same time, the air guide pipe 22 can be used to conduct the hot air inside the vacuum heat treatment tank 1 during heat treatment to the inside of the partition 21, which can then be used to conduct heat treatment on the water inside the water tank 15, making the temperature difference between the hot water and the high-temperature mold smaller and the cooling rate slower. This "slow cooling" effect can alleviate the concentration of thermal stress and phase transformation stress, and is especially suitable for molds with complex shapes, uneven wall thickness, or large size, such as precision stamping molds and die-casting molds. It can significantly reduce the risk of cracking and avoid the problem of rapid cooling with cold water or low-temperature media, which would cause a surge in thermal stress due to the large temperature difference between the inside and outside, resulting in rapid contraction of the outer layer while the inner layer is still in a high-temperature expansion state. At the same time, the phase transformation stress is superimposed, which can easily cause the mold to crack or deform.

[0030] See Figures 4-6 and Figure 8 The cooling component includes a connecting pipe 16, which is rotatably connected to the inner wall of a rotating pipe 4. A water tank 15 is fixedly connected to one end of the connecting pipe 16 away from the rotating pipe 4. A water pump 20 is installed on the outer edge of the connecting pipe 16. One end of a connecting pipe 17 is fixedly connected to the outer edge of the connecting pipe 16, and a positioning pipe 18 is fixedly connected to the other end of the connecting pipe 17. Multiple high-temperature resistant nozzles 19 are installed on the outer edge of the positioning pipe 18, and the multiple high-temperature resistant nozzles 19 are all installed on the inner wall of the vacuum heat treatment tank 1. The positioning pipe 18 is fixed to the outer edge of the vacuum heat treatment tank 1. A drain pipe 29 is installed at the bottom of the vacuum heat treatment tank 1, and a valve is rotatably installed on the inner wall of the drain pipe 29. Among them, a mounting bracket 14 is installed on the outside of the vacuum heat treatment tank 1, and the end of the connecting pipe 16 near the rotating pipe 4 is installed on the inner wall of the mounting bracket 14. In this scheme, the water pump 20 can be driven to discharge water from the water tank 15 through the connecting pipe 16 to the rotating pipe 4 and the positioning pipe 18 respectively. Furthermore, the high-temperature resistant nozzle 19 can be used to spray water on the heat-treated mold. On the one hand, it can be used to cool the heat-treated mold and wash off the impurities attached to the surface of the heat-treated mold. The water inside the rotating pipe 4 can be discharged through the water outlet 27 and can contact the bottom of the mold to achieve cooling, thereby reducing the cooling blind zone and ensuring the thorough cooling of the mold. At the same time, the mounting bracket 14 can be used to position the connecting pipe 16 to ensure that the connecting pipe 16 will not shake or shift its position when the rotating pipe 4 rotates. And by opening the valve, the water and impurities inside the vacuum heat treatment tank 1 after cooling can be quickly discharged to the outside through the drain pipe 29.

[0031] See Figure 5 and Figure 6A positioning frame 5 is installed on the inner wall of the vacuum heat treatment tank 1, and the rotating tube 4 is rotatably connected to the inner wall of the positioning frame 5. A bearing 6 is installed on the side wall of the vacuum heat treatment tank 1, and the outer edge of the rotating tube 4 is fixedly connected to the inner ring of the bearing 6. In this scheme, the positioning frame 5 and bearing 6 are used to position the rotating tube 4, ensuring that the rotating tube 4 can be in a stable state and continuously rotate, and will not swing randomly during rotation. Example

[0032] See Figure 3 , Figure 6 and Figure 8 The drive assembly includes a servo motor 7, which is mounted on the outside of the vacuum heat treatment tank 1. The power output shaft of the servo motor 7 is fixedly connected to a gear 8. A gear 9 is mounted on the outer edge of the rotating tube 4. Gear 8 and gear 9 mesh with each other. A transmission wheel 10 is mounted on the outer edge of the rotating tube 4. A fixed disk 12 is mounted on the outer wall of the vacuum heat treatment tank 1. A transmission wheel 10 is also rotatably connected to the outer side of the fixed disk 12. A transmission belt 11 is sleeved on the inner wall of the two transmission wheels 10. A high-temperature resistant fan 13 is rotatably connected to the side of the fixed disk 12 away from the transmission wheel 10. The rotating shaft of the high-temperature resistant fan 13 is fixedly connected to the transmission wheel 10. The high-temperature resistant fan 13 is located on the inner wall of the vacuum heat treatment tank 1. In this solution, when the servo motor 7 drives the gear 8 to rotate, the gear 9 can drive the rotating tube 4 to rotate, thus achieving positional rotation. Furthermore, the transmission wheel 10 and transmission belt 11 can be used to transmit the rotational force to the high-temperature fan 13. The airflow generated by the rotation of the high-temperature fan 13 can be used to blow air into the vacuum heat treatment tank 1, further increasing the airflow inside the vacuum heat treatment tank 1 and ensuring that the hot air can quickly spread to all corners inside the vacuum heat treatment tank 1 during heat treatment. This further ensures the uniformity of heating during mold heat treatment. The fixed plate 12 can be used to position the transmission belt 11 and the high-temperature fan 13, ensuring their stability during rotation.

[0033] See Figure 6 The positioning component includes a placement frame 23, which is fixed to the outer edge of the rotating tube 4. The inner wall of the placement frame 23 has multiple through slots. An electric push rod 24 is installed on the top of the placement frame 23. The output shaft of the electric push rod 24 is fixedly connected to a pressure plate 25. One end of a return spring 26 is fixedly connected to the top of the pressure plate 25. The other end of the return spring 26 is fixedly connected to the inner top of the placement frame 23. The inner wall of the rotating tube 4 is provided with a water outlet 27 that communicates with the inner wall of the placement rack 23. A scraper 28 is installed on the outside of the placement rack 23, and the top of the scraper 28 is in contact with the inner wall of the vacuum heat treatment tank 1. In this design, the mold material requiring heat treatment can be placed inside the placement rack 23. Then, the electric push rod 24 can be driven to push the pressure plate 25 downward to position the mold material, ensuring that the mold material is stably placed inside the placement rack 23. The rotating tube 4 will not easily disengage when it drives the placement rack 23 to rotate. Furthermore, when the placement rack 23 rotates, it can drive the scraper 28 to rotate against the inner wall of the vacuum heat treatment tank 1, which can scrape off the impurities adhering to the inner wall of the vacuum heat treatment tank 1. While the placement rack 23 rotates to make the mold material evenly heated, the impurities on the inner wall of the vacuum heat treatment tank 1 are cleaned. In addition, the through groove makes it easier for the water sprayed by the high-temperature resistant nozzle 19 to come into contact with the mold inside the placement rack 23.

[0034] See Figures 9-11 The filter assembly includes a frame 31, with a partition 37 installed on the inner wall of the frame 31. Multiple cooling bars 38 are installed on one side of the partition 37. A cross 39 is installed on the inner wall of the frame 31. A coarse filter layer 40, an activated carbon adsorption layer 41, and a fine filter layer 42 are sequentially installed on the side of the cross 39 away from the partition 37. An abutment frame 43 is installed on the outer wall of the fine filter layer 42, and a bolt 44 is threadedly connected to the inner wall of the abutment frame 43. The bolt 44 is threadedly connected to the inner wall of the cross 39. An interception assembly for blocking exhaust gas is installed on the inner wall of the frame 31. In this solution, the cooling strip 38 effectively cools the exhaust gas as it passes through the baffle 37, ensuring that the discharged exhaust gas remains at a low temperature. This effectively prevents damage to the coarse filter layer 40, activated carbon adsorption layer 41, and fine filter layer 42 caused by excessively high gas temperatures. Furthermore, the abutment frame 43 and bolts 44 stably position the coarse filter layer 40, activated carbon adsorption layer 41, and fine filter layer 42 within the frame 31, further ensuring that they do not easily detach from their positions when subjected to the impact force of exhaust gas. At the same time, the coarse filter layer 40, activated carbon adsorption layer 41, and fine filter layer 42 effectively intercept floating matter and impurities contained in the exhaust gas, preventing them from directly drifting into the air and causing environmental pollution. This further prevents workers from accidentally inhaling them, which could threaten their life and health. Moreover, removing the abutment frame 43 and bolts 44 allows for easy removal of the coarse filter layer 40, activated carbon adsorption layer 41, and fine filter layer 42 for cleaning and maintenance. Example

[0035] See Figure 9 The interception component includes a baffle 32, which is slidably connected to the inner wall of the frame 31. A bracket 33 is installed on the top of the frame 31, and a rotary motor 34 is installed on the top of the bracket 33. A lead screw 35 is fixedly connected to the power output shaft of the rotary motor 34. A slider 36 is threadedly connected to the outer edge of the lead screw 35. The outer side of the slider 36 is fixedly connected to the outer wall of the baffle 32. The position of the baffle 32 corresponds to that of the exhaust gas outlet 30, and the size of the baffle 32 is larger than the internal size of the exhaust gas outlet 30. In this scheme, the baffle 32 can be used to intercept the exhaust gas outlet 30, further ensuring that the gas inside the vacuum heat treatment tank 1 will not be easily discharged to the outside during the heat treatment, and ensuring that the inside of the vacuum heat treatment tank 1 is in a sealed state. Furthermore, the rotary motor 34 can drive the lead screw 35 to rotate, causing the slider 36 to move on the inner wall of the support 33, which in turn can drive the baffle 32 to slide on the inner wall of the frame 31, thereby opening the exhaust gas outlet 30 for the discharge of exhaust gas.

[0036] See Figure 9 A limit rod is installed on the inner wall of the bracket 33, the slider 36 is slidably connected to the limit rod, and the bottom end of the lead screw 35 is rotatably connected to the inner bottom of the bracket 33. In this design, a limiting rod can be used to limit the vertical movement of the slider 36, ensuring that it can move vertically up and down on the inner wall of the bracket 33 while remaining in a vertical position.

[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A vacuum heat treatment device for molds, comprising: Vacuum heat treatment tank (1) and water tank (15), the inner wall of the vacuum heat treatment tank (1) is rotatably connected to a side door (2), and the outer wall of the side door (2) is equipped with two magnetic suction plates (3), and the two magnetic suction plates (3) are in contact with the outer wall of the vacuum heat treatment tank (1); Its characteristic is that it also includes: A rotating tube (4) is rotatably connected to the inner wall of the vacuum heat treatment tank (1). A cooling assembly is connected to the inner wall of the rotating tube (4). The cooling assembly is used to spray water onto the mold inside the vacuum heat treatment tank (1) for heat treatment. A drive assembly installed on the outside of the vacuum heat treatment tank (1) is used to drive the rotating tube (4) to rotate inside the vacuum heat treatment tank (1); a partition (21) is installed on the outer edge of the water tank (15), and one end of a gas guide pipe (22) is fixedly connected to the inner wall of the partition (21), the other end of the gas guide pipe (22) is connected to the inside of the vacuum heat treatment tank (1); and, A positioning component is installed on the outer edge of the rotating tube (4). The positioning component is used to clamp and position the mold that needs to be heat treated. A waste gas outlet (30) is provided on one side of the vacuum heat treatment tank (1). A filter component is installed on the outer wall of the vacuum heat treatment tank (1) at the waste gas outlet (30). The filter component is used to filter the waste gas emitted after heat treatment inside the vacuum heat treatment tank (1).

2. The mold vacuum heat treatment equipment according to claim 1, characterized in that: The cooling assembly includes a connecting pipe (16), which is rotatably connected to the inner wall of a rotating pipe (4). A water tank (15) is fixedly connected to one end of the connecting pipe (16) away from the rotating pipe (4). A water pump (20) is installed on the outer edge of the connecting pipe (16). One end of a connecting pipe (17) is fixedly connected to the outer edge of the connecting pipe (16), and a positioning pipe (18) is fixedly connected to the other end of the connecting pipe (17). Multiple high-temperature resistant nozzles (19) are installed on the outer edge of the positioning pipe (18), and all multiple high-temperature resistant nozzles (19) are installed on the inner wall of the vacuum heat treatment tank (1). The positioning pipe (18) is fixed to the outer edge of the vacuum heat treatment tank (1). A drain pipe (29) is installed at the bottom of the vacuum heat treatment tank (1), and a valve is rotatably installed on the inner wall of the drain pipe (29).

3. The mold vacuum heat treatment equipment according to claim 1, characterized in that: The inner wall of the vacuum heat treatment tank (1) is equipped with a positioning frame (5), the rotating tube (4) is rotatably connected to the inner wall of the positioning frame (5), the side wall of the vacuum heat treatment tank (1) is equipped with a bearing (6), and the outer edge of the rotating tube (4) is fixedly connected to the inner ring of the bearing (6).

4. The mold vacuum heat treatment equipment according to claim 3, characterized in that: The drive assembly includes a servo motor (7), which is installed on the outside of the vacuum heat treatment tank (1). The power output shaft of the servo motor (7) is fixedly connected to a gear one (8). A gear two (9) is installed on the outer edge of the rotating tube (4). The gear one (8) and the gear two (9) mesh with each other. A transmission wheel (10) is installed on the outer edge of the rotating tube (4). A fixed disk (12) is installed on the outer wall of the vacuum heat treatment tank (1). A transmission wheel (10) is also rotatably connected to the outer side of the fixed disk (12). A transmission belt (11) is sleeved on the inner wall of the two transmission wheels (10). A high-temperature resistant fan (13) is rotatably connected to the side of the fixed disk (12) away from the transmission wheel (10). The rotating shaft of the high-temperature resistant fan (13) is fixedly connected to the transmission wheel (10). The high-temperature resistant fan (13) is located on the inner wall of the vacuum heat treatment tank (1).

5. The mold vacuum heat treatment equipment according to claim 2, characterized in that: The vacuum heat treatment tank (1) is equipped with a mounting bracket (14) on its outer side, and the end of the connecting pipe (16) near the rotating pipe (4) is installed on the inner wall of the mounting bracket (14).

6. The mold vacuum heat treatment equipment according to claim 1, characterized in that: The positioning component includes a placement frame (23), which is fixed to the outer edge of the rotating tube (4). The inner wall of the placement frame (23) is provided with multiple through slots. An electric push rod (24) is installed on the top of the placement frame (23). The output shaft of the electric push rod (24) is fixedly connected to a pressure plate (25). One end of a return spring (26) is fixedly connected to the top of the pressure plate (25). The other end of the return spring (26) is fixedly connected to the inner top of the placement frame (23).

7. The mold vacuum heat treatment equipment according to claim 6, characterized in that: The inner wall of the rotating tube (4) is provided with a water outlet (27) which communicates with the inner wall of the placement rack (23). A scraper (28) is installed on the outside of the placement rack (23), and the top of the scraper (28) is in contact with the inner wall of the vacuum heat treatment tank (1).

8. The mold vacuum heat treatment equipment according to claim 1, characterized in that: The filter assembly includes a frame (31), with a partition (37) installed on the inner wall of the frame (31). Multiple cooling strips (38) are installed on one side of the partition (37). A cross (39) is installed on the inner wall of the frame (31). A coarse filter layer (40), an activated carbon adsorption layer (41), and a fine filter layer (42) are sequentially installed on the side of the cross (39) away from the partition (37). An abutment frame (43) is installed on the outer wall of the fine filter layer (42), and a bolt (44) is threadedly connected to the inner wall of the abutment frame (43). The bolt (44) is threadedly connected to the inner wall of the cross (39). An interception assembly for blocking exhaust gas is installed on the inner wall of the frame (31).

9. A mold vacuum heat treatment device according to claim 8, characterized in that: The interception assembly includes a baffle (32), which is slidably connected to the inner wall of a frame (31). A bracket (33) is installed on the top of the frame (31), and a rotary motor (34) is installed on the top of the bracket (33). A lead screw (35) is fixedly connected to the power output shaft of the rotary motor (34). A slider (36) is threadedly connected to the outer edge of the lead screw (35). The outer side of the slider (36) is fixedly connected to the outer wall of the baffle (32). The position of the baffle (32) corresponds to that of the exhaust gas outlet (30), and the size of the baffle (32) is larger than the internal size of the exhaust gas outlet (30).

10. A mold vacuum heat treatment device according to claim 9, characterized in that: The inner wall of the bracket (33) is equipped with a limiting rod, the slider (36) is slidably connected to the limiting rod, and the bottom end of the lead screw (35) is rotatably connected to the inner bottom of the bracket (33).

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