Liquid nitrogen tempering treatment device for mold machining

Abstract

The utility model discloses a liquid nitrogen tempering treatment device for mold processing. The liquid nitrogen tempering treatment device comprises a tempering furnace, a movable frame is arranged at the end, facing a furnace door, of the tempering furnace, and a cryogenic pool used for containing liquid nitrogen is arranged at the bottom of the movable frame. A lifting frame is arranged at the top of the movable frame, a hanging basket used for hanging a mold is arranged in the lifting frame, a first driving mechanism used for driving the hanging basket to ascend and descend is arranged on the lifting frame, and a second driving mechanism used for driving the lifting frame to move close to and away from the tempering furnace is arranged on the movable frame. In the whole tempering and subzero treatment process of the mold, the mold only needs to be dragged to the supporting plate from the inside of the tempering furnace, the tempering and subzero treatment process can be realized through automatic control, the mold does not need to be manually and directly operated, and the danger that personnel are easily scalded when approaching the tempering furnace and are easily frostbitten by liquid nitrogen when approaching the subzero pool is avoided; and the safety coefficient in the mold machining process is improved while control operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tempering and deep-cold treatment, in particular to a liquid nitrogen tempering treatment device for mold processing. Background Art

[0002] In order to prevent high-speed steel molds (especially molds with complex shapes, such as aluminum alloy tires, etc.) from breaking and becoming brittle during cryogenic treatment, the quenched aluminum alloy tire mold is tempered at 560℃ for 1h and then cryogenically treated with liquid nitrogen, and then finally tempered at 400℃. This heat treatment process can not only prevent the aluminum alloy tire mold from breaking and becoming brittle, but also increase the life of the aluminum alloy tire mold. In short, the use of -196℃ liquid nitrogen cryogenic treatment on aluminum alloy tire molds can cause significant changes in the organization, effectively promote the transformation of retained austenite to martensite and the precipitation of ultrafine carbides, improve hardness, wear resistance, impact toughness, and red hardness, and enable aluminum alloy tire molds to obtain better comprehensive mechanical properties.

[0003] In the prior art, the utility model with application number 202122476707.8 discloses a liquid nitrogen tempering treatment device for cold rolling processing of steel coils. The liquid nitrogen tempering treatment device for cold rolling processing of steel coils is arranged inside the inner shell through a placing rack. When in use, the steel coil is placed on the placing rack, and then the servo motor is started. The servo motor drives the gear to rotate. During the rotation of the gear, the slide grooves on both sides of the placing rack will be driven to slide on the slide rail through the rack, so that the placing rack can automatically slide in and out of the inner shell. In this way, the steel coil can automatically enter and exit the inner shell without excessive manual operation, thereby ensuring the personal safety of the staff and facilitating the safe use of the device, solving the problem that the steel coil cannot automatically enter and exit the tempering bin, making it inconvenient for tempering treatment.

[0004] The tempering and cryogenic treatment method of the aluminum alloy tire mold is the same as the above-mentioned disclosed technical solution. However, the applicant still found deficiencies in the actual processing operation of the aluminum alloy tire mold using the tempering and cryogenic treatment processing scheme provided by the above-mentioned technical solution. Although the aluminum alloy tire mold is easy to automatically enter and exit the tempering bin, it is not difficult to find that after the aluminum alloy tire mold exits the tempering bin, it still needs manual assistance to be placed in the liquid nitrogen tank for cryogenic treatment. The operator directly operates and controls the aluminum alloy tire mold too much, which is easy to get burned by being too close to the tempering furnace and frostbite by being too close to the liquid nitrogen tank, and thus the safety factor is low. For this reason, the present application proposes a liquid nitrogen tempering treatment device for mold processing that is easy to automatically control and operate to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a liquid nitrogen tempering treatment device for mold processing. During the entire tempering and cryogenic treatment process, the aluminum alloy tire mold only needs to be dragged from the tempering furnace to the pallet, which can be realized through automatic control, without manual direct operation on the aluminum alloy tire mold, avoiding the danger of personnel being easily scalded by being close to the tempering furnace and being easily frostbitten by liquid nitrogen when close to the cryogenic pool, facilitating control operation and improving the safety factor of the aluminum alloy tire mold processing process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A liquid nitrogen tempering treatment device for mold processing comprises a tempering furnace; a movable frame is arranged at one end of the tempering furnace facing the furnace door, and a deep cold pool for filling liquid nitrogen is arranged at the bottom of the movable frame; a lifting frame is arranged on the top of the movable frame, and a hanging basket for hanging the mold is arranged in the lifting frame, a first driving mechanism for driving the hanging basket to rise and fall is arranged on the lifting frame, and a second driving mechanism for driving the lifting frame to move close to and away from the tempering furnace is arranged on the movable frame.

[0008] Preferably, the hanging basket comprises a support plate capable of being lowered into the deep cold pool, and hanging arms are vertically fixed on opposite sides of the support plate.

[0009] Preferably, the first driving mechanism includes a slide groove opened on the inner side wall of the lifting frame, a second screw rod is vertically rotatably installed in the slide groove, a second motor for driving the second screw rod to rotate is installed on the top of the lifting frame, a driving block slidingly engaged with the slide groove is fixed on the top of the boom, and the driving block is adapted to be threadedly sleeved with the second screw rod.

[0010] Preferably, a plurality of through holes are provided on the support plate, and a cover plate is provided on the top of the deep cold pool.

[0011] Preferably, one side of both ends of the cover plate is provided with a protrusion, and sliding rods are fixed along the width direction at both ends of the top of the deep cold pool, and the protrusions are slidably sleeved with the sliding rods.

[0012] Preferably, the second driving mechanism includes a slide fixed at the bottom ends of the two side walls of the lifting frame, the slide is slidably fitted with the moving frame, a first screw rod is threadedly passed through the slide along the length direction of the moving frame, fixed blocks are rotatably installed at both ends of the first screw rod, and the fixed blocks are fixed on the moving frame, and a first motor for driving the first screw rod to rotate is installed on one of the fixed blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model arranges a hanging basket in the lifting frame to cooperate with the first driving mechanism to drive the hanging basket to rise and fall. It is only necessary to drag the aluminum alloy tire mold onto the supporting plate, and the second screw rod and the threaded joint of the driving block are used to drive the supporting plate to descend into the deep freezing pool, thereby the aluminum alloy tire mold on the supporting plate is immersed in the liquid nitrogen in the deep freezing pool for deep freezing treatment, so that the aluminum alloy tire mold obtains better comprehensive mechanical properties. In addition, through the setting of the second driving mechanism, the lifting frame can be driven to approach the tempering furnace or move above the deep freezing pool, which is convenient for the transportation of the aluminum alloy tire mold. Therefore, during the entire mold tempering and deep freezing treatment process, it is only necessary to drag the aluminum alloy tire mold from the tempering furnace to the supporting plate, which can be realized through automatic control, without manual direct operation of the aluminum alloy tire mold, avoiding the danger of personnel being easily scalded by being close to the tempering furnace and being easily frostbitten by liquid nitrogen by being close to the deep freezing pool, facilitating the control operation and improving the safety factor of the aluminum alloy tire mold processing process.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the mobile frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the hanging basket of the utility model;

[0019] Figure 4 For this utility model Figure 2 A in the enlarged view;

[0020] Figure 5 This is a schematic diagram of the structure of the deep cooling pool of the utility model;

[0021] Figure 6 For this utility model Figure 5 Enlarged view of point B in .

[0022] In the figure: 1, tempering furnace; 2, moving frame; 3, deep cooling pool; 4, lifting frame; 5, hanging basket; 6, first driving mechanism; 7, second driving mechanism; 8, cover plate; 9, slide seat; 10, fixed block; 11, first screw rod; 12, first motor; 13, support plate; 14, hanging arm; 15, driving block; 16, through hole; 17, slide groove; 18, second screw rod; 19, bump; 20, slide rod; 21, second motor. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0024] Example

[0025] See also Figures 1 to 6 The utility model preferably provides a technical solution: a liquid nitrogen tempering treatment device for mold processing, including a tempering furnace 1, a mobile frame 2 is provided at one end of the tempering furnace 1 facing the furnace door, a deep cold pool 3 for filling liquid nitrogen is provided at the bottom of the mobile frame 2, the height of the deep cold pool 3 is lower than the mobile frame 2, a lifting frame 4 is provided on the top of the mobile frame 2, a hanging basket 5 for hanging the mold is provided in the lifting frame 4, and a first driving mechanism 6 for driving the hanging basket 5 to lift is provided on the lifting frame 4. Specifically, the hanging basket 5 includes a support plate 13 that can be dropped into the deep cold pool 3, and the support plate 1 The two opposite sides of the 3 are vertically fixed with a hanging arm 14. The hanging basket 5 is arranged in the lifting frame 4 and cooperates with the first driving mechanism 6 to drive the hanging basket 5 to rise and fall. It is only necessary to drag the aluminum alloy tire mold onto the supporting plate 13, and drive the supporting plate 13 to fall into the deep freezing pool 3. Thus, the mold on the supporting plate 13 is immersed in the liquid nitrogen in the deep freezing pool 3 for deep freezing treatment, so that the aluminum alloy tire mold obtains better comprehensive mechanical properties. After the deep freezing treatment is completed, the aluminum alloy tire mold can also be lifted. The mechanical structure replaces manual labor, which is conducive to automatic control operation and is safer and more convenient.

[0026] In this embodiment, the first driving mechanism 6 includes a slide groove 17 provided on the inner side wall of the lifting frame 4, a second screw rod 18 is vertically and rotatably installed in the slide groove 17, a second motor 21 for driving the second screw rod 18 to rotate is installed at the top of the lifting frame 4, a driving block 15 is fixed at the top of the suspension arm 14 and is slidably engaged with the slide groove 17, the driving block 15 is threadedly sleeved with the second screw rod 18, the second motor 21 is started to drive the second screw rod 18 to rotate, and the driving block 15 is driven to slide down along the slide groove 17, so that the suspension arm 14 and the support plate 13 can be pushed down into the deep cold pool 3 to perform deep cold treatment on the aluminum alloy tire mold. A plurality of through holes 16 are provided on the support plate 13, and the plurality of through holes 16 are conducive to the penetration of liquid nitrogen to perform deep cold treatment on the bottom of the aluminum alloy tire mold.

[0027] Furthermore, a cover plate 8 is provided on the top of the deep cold pool 3, and a protrusion 19 is provided on one side of the two ends of the cover plate 8. Slide rods 20 are fixed along the width direction at the two ends of the top of the deep cold pool 3. The protrusion 19 is slidably sleeved with the slide rod 20. Through the sleeve cooperation of the protrusion 19 and the slide rod 20, the cover plate 8 can be pushed and pulled to translate to cover or open the top of the deep cold pool 3.

[0028] As a preferred implementation mode of this embodiment, the mobile frame 2 is provided with a second driving mechanism 7 for driving the lifting frame 4 to move closer to and away from the tempering furnace 1. The second driving mechanism 7 includes a slide 9 fixed at the bottom end of the two side walls of the lifting frame 4. The slide 9 is slidably fitted with the moving frame 2. A first screw rod 11 is threadedly penetrated on the slide 9 along the length direction of the moving frame 2. Fixed blocks 10 are rotatably installed at both ends of the first screw rod 11. The fixed blocks 10 are fixed on the moving frame 2. A first motor 12 for driving the first screw rod 11 to rotate is installed on one of the fixed blocks 10. By starting the first motor 12 to drive the first screw rod 11 to rotate, the slide 9 can be driven to drive the lifting frame 4 to move closer to the tempering furnace 1 or move to above the deep cold pool 3 on the top of the moving frame 2 to facilitate the movement of the aluminum alloy tire mold.

[0029] When the liquid nitrogen tempering treatment device for mold processing is used, after the processed mold is tempered in the tempering furnace 1, the aluminum alloy tire mold is taken out and placed on the support plate 13, and then the first motor 12 is started to drive the first screw rod 11 to rotate, driving the slide 9 to drive the lifting frame 4 to move horizontally on the top of the moving frame 2 to above the deep cold pool 3, and then the second motor 21 is started to drive the second screw rod 18 to rotate, driving the driving block 15 to slide down along the slide 17, pushing the boom 14 and the support plate 13 to drop into the deep cold pool 3, thereby immersing the aluminum alloy tire mold on the support plate 13 in the liquid nitrogen in the deep cold pool 3 for deep cold treatment. The aluminum alloy tire mold has better comprehensive mechanical properties, wherein a plurality of through holes 16 opened on the support plate 13 are conducive to the penetration of liquid nitrogen to the deep cryogenic treatment of the bottom of the aluminum alloy tire mold. During the entire mold tempering and deep cryogenic treatment process, it is only necessary to drag the aluminum alloy tire mold from the tempering furnace 1 to the support plate 13, which can be realized through automatic control, without manual direct operation of the aluminum alloy tire mold, avoiding the danger of personnel being easily scalded by being close to the tempering furnace 1 and being easily frostbitten by liquid nitrogen by being close to the deep cold pool 3, facilitating control operations while improving the safety factor of the aluminum alloy tire mold processing process.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.

[0031] The above clearly and completely describes the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0032] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A liquid nitrogen tempering treatment device for mold processing, comprising a tempering furnace (1), characterized in that: The tempering furnace (1) is provided with a movable rack (2) at one end facing the furnace door, and a deep cooling pool (3) for containing liquid nitrogen is provided at the bottom of the movable rack (2); A lifting frame (4) is arranged on the top of the movable frame (2), a hanging basket (5) for hanging the mold is arranged inside the lifting frame (4), a first driving mechanism (6) for driving the hanging basket (5) to rise and fall is arranged on the lifting frame (4), and a second driving mechanism (7) for driving the lifting frame (4) to move closer to and away from the tempering furnace (1) is arranged on the movable frame (2).

2. A liquid nitrogen tempering treatment device for mold processing according to claim 1, characterized in that: The hanging basket (5) comprises a support plate (13) capable of being lowered into the deep cold pool (3), and hanging arms (14) are vertically fixed on opposite sides of the support plate (13).

3. A liquid nitrogen tempering treatment device for mold processing according to claim 2, characterized in that: The first driving mechanism (6) comprises a slide groove (17) provided on the inner side wall of the lifting frame (4), a second screw rod (18) being vertically rotatably installed in the slide groove (17), a second motor (21) for driving the second screw rod (18) to rotate being installed at the top of the lifting frame (4), a driving block (15) slidably engaged with the slide groove (17) being fixed at the top of the boom (14), and the driving block (15) being threadedly sleeved and adapted to fit with the second screw rod (18).

4. A liquid nitrogen tempering treatment device for mold processing according to claim 2, characterized in that: The support plate (13) is provided with a plurality of through holes (16), and a cover plate (8) is provided on the top of the deep cooling pool (3).

5. The liquid nitrogen tempering treatment device for mold processing according to claim 4, characterized in that: One side of both ends of the cover plate (8) is provided with a bulge (19), and sliding rods (20) are fixed along the width direction at both ends of the top of the deep cooling pool (3), and the bulge (19) is slidably sleeved with the sliding rod (20).

6. The liquid nitrogen tempering treatment device for mold processing according to claim 1, characterized in that: The second driving mechanism (7) comprises a slide seat (9) fixed at the bottom ends of the two side walls of the lifting frame (4), the slide seat (9) being slidably fitted with the moving frame (2), a first screw rod (11) being threadedly penetrated on the slide seat (9) along the length direction of the moving frame (2), fixed blocks (10) being rotatably mounted at both ends of the first screw rod (11), the fixed blocks (10) being fixed on the moving frame (2), and a first motor (12) for driving the first screw rod (11) to rotate is mounted on one of the fixed blocks (10).

Images