A fixing frame for metal heat treatment

Abstract

The utility model discloses a fixed support for metal heat treatment, including bottom plate, the universal wheel of being able to limit fixed connection in the bottom plate one end, the handle fixed connection on the bottom plate, the connecting seat fixed connection in the other end of bottom plate. The utility model discloses through drive assembly and drive metal piece intermittent rotation, break the limitation of traditional fixed support stationary placement, make each surface of metal piece and internal can more evenly receive heat, reduce the temperature gradient of surface and internal, avoid the internal stress concentration produced because of thermal expansion or uneven shrinkage, reduce the generation probability of crack or residual stress, the height of metal piece can be adjusted accurately while pushing assembly, ensure that the distance of metal piece and heating element, hearth wall is consistent, further avoid the thermal stress difference caused by local heating too fast, the clamp no.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for metal parts, and specifically to a fixing frame for metal heat treatment. Background Technology

[0002] Metal heat treatment is a process in which metal or alloy workpieces are heated to a suitable temperature in a certain medium, held at that temperature for a certain time, and then cooled at different rates in different media. By changing the microstructure of the surface or interior of the metal material, its properties can be controlled. Annealing is a type of metal heat treatment. It involves heating the entire workpiece to a suitable temperature, holding it at that temperature for a period of time, and then slowly cooling it to obtain good processing and performance properties. According to the patent application published on the Internet (authorization announcement number: CN 221371210 U), "This utility model relates to the field of metal component heat treatment technology, specifically a metal component heat treatment fixing frame, including a box body. The box body has an internal movable groove, and the movable groove contains a movable insert plate. Multiple clamping mechanisms are fixedly installed on the surface of the movable insert plate. Each clamping mechanism includes a placement plate, a base, and a screw with threads at both ends in opposite directions. The placement plate has an internal moving groove, and one end of the screw is movably connected to one side of the inner wall of the moving groove via a bearing. By setting the placement plate, workers can place metal parts requiring specific clamping on the base, and then, by rotating the handle at the corresponding position, use the clamping plates on both sides of the base to clamp the metal parts. This achieves the ability to clamp metal parts requiring specific clamping, ensuring even surface heating, and also enables the clamping of metal parts of different sizes. It has a wide range of applications and strong practicality." Workers place long metal parts flat on a specially made long strip. The surface of the strip has multiple anti-slip pads that can effectively fix these parts. For metal parts that do not require specific clamping, they can be placed at the placement port of the turntable. After the motor is started, the turntable drives the parts to rotate at a uniform speed, so that the surface is heated evenly.

[0003] The fixed mounting plate remains stationary throughout the heat treatment process, resulting in a temperature gradient between the component's surface and interior. Since heat transfer relies solely on natural convection and radiation, the cooling rates at the surface and center of the component are inconsistent in a static state. This uneven thermal expansion / contraction, caused by temperature differences, leads to stress concentration within the component due to the lack of external forces to balance these differences. For example, excessive temperature differences between the center and surface of thick-section components can induce cracks. Furthermore, if the mounting height is fixed, the distance between the component and the furnace wall, other components, or heating elements will vary. Areas closer to the furnace will heat up faster, exhibiting larger temperature gradients and a greater tendency to generate localized thermal stress; areas farther away will heat up more slowly and experience less thermal stress. This uneven distribution of thermal stress can also lead to microscopic cracks or residual stress within the component. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a fixing frame for metal heat treatment. By driving the metal parts to rotate intermittently through the drive component, the limitation of the traditional fixing frame being stationary is broken, so that the surfaces and interiors of the metal parts can receive heat more evenly, reducing the temperature gradient between the surface and the interior, avoiding internal stress concentration caused by uneven thermal expansion or contraction, and reducing the probability of cracks or residual stress. At the same time, the drive component can precisely adjust the height of the metal parts to ensure that the distance between the metal parts and the heating elements and furnace walls is consistent, further avoiding thermal stress differences caused by excessively rapid local heating.

[0005] The purpose of this utility model is achieved by the following technical solution: a fixing frame for metal heat treatment, characterized in that: it includes a base plate, a swivel caster fixedly connected to one end of the base plate, a handle fixedly connected to the base plate, a connecting seat fixedly connected to the other end of the base plate, a first rotating plate rotatably connected to the connecting seat at one end, a mounting plate rotatably connected to the other end of the first rotating plate, a drive assembly mounted on the mounting plate, a flip fixing assembly mounted on the output end of the drive assembly, a second rotating plate rotatably connected to the center of the first rotating plate, and a push assembly mounted on the base plate, wherein the output end of the push assembly is connected to the second rotating plate; The drive assembly is used to rotate the metal fixed on the flip-fixing assembly, and the push assembly is used to push the second rotating plate and the first rotating plate to move in opposite directions, so that the second rotating plate moves closer to or further away from the connecting seat, causing the mounting plate to rise or fall.

[0006] In one optional embodiment, the drive assembly includes a motor fixedly connected to a mounting plate, a rotating rod fixedly connected to the output end of the motor, and a curved ring fixedly connected to the rotating rod. The motor drives the rotating rod to rotate, causing the rotating rod to drive the flipping fixing assembly on the curved ring to move.

[0007] In one optional embodiment, the flipping and fixing assembly includes an intermittent rotating disk rotatably connected to a mounting plate, a placement plate fixedly connected to the intermittent rotating disk, a plurality of fixed plates linearly arranged fixedly connected to the placement plate, a clamp one mounted on the fixed plate, and a clamp two mounted on the fixed plate. Both clamp one and clamp two are mounted on the fixed plate by bolts and nuts.

[0008] In one alternative implementation, the rotating rod rotates, and the curved ring causes the intermittent rotating disk to drive the placement plate to rotate intermittently on the mounting plate along a special trajectory.

[0009] In one optional embodiment, the pushing component includes symmetrically arranged limiting strips fixedly connected to the base plate, a second motor fixedly connected to the base plate, a screw fixedly connected to the output end of the second motor, a limiting rod fixedly connected to the base plate, and a sliding plate threadedly connected to the screw. One end of the second rotating plate is rotatably connected to the sliding plate, and the other end of the second rotating plate is slidably connected to the mounting plate. The second motor is used to drive the sliding plate to move along the axial direction of the screw.

[0010] In one optional embodiment, a groove is provided on the limiting strip, and the sliding plate is slidably connected to the limiting strip.

[0011] In one alternative implementation, when the screw rotates, the slide plate drives the rotating plate two closer to the motor two, and the mounting plate will be raised away from the base plate.

[0012] In one alternative implementation, when the screw rotates, the slide plate drives the rotating plate two away from the motor two, and the mounting plate will decrease in height away from the base plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By driving the metal parts to rotate intermittently through the drive component, the limitations of the traditional fixed frame are broken, allowing the surface and interior of the metal parts to receive heat more evenly, reducing the temperature gradient between the surface and the interior, avoiding internal stress concentration caused by uneven thermal expansion or contraction, and reducing the probability of cracks or residual stress. At the same time, the drive component can precisely adjust the height of the metal parts to ensure that the distance between the metal parts and the heating elements and furnace walls is consistent, further avoiding thermal stress differences caused by excessively rapid local heating.

[0014] 2. The clamps one and two in the flip-fixing assembly are installed with bolts and nuts, and the spacing can be flexibly adjusted according to the specifications of the metal parts to adapt to metal parts of different sizes; and the fixing frame can be moved flexibly by limiting the casters and handles, and the push assembly can be automatically adjusted in height by motor drive, without the need for manual handling or prying, which not only reduces the intensity of manual labor, but also can handle multiple linearly arranged metal parts on the placement plate at the same time, improving the heat treatment efficiency. Attached Figure Description

[0015] Figure 1 A perspective view of a metal heat treatment fixture; Figure 2 This is a perspective view of a metal heat treatment fixture from another angle. Figure 3 A schematic diagram of the structure of the flip-fixed component; Figure 4 This is a schematic diagram of the drive component. Figure 5 for Figure 4 A magnified structural diagram at point A; Figure 6 This is a schematic diagram of the structure of fixture one; Figure 7 This is a schematic diagram of the structure of fixture two; Figure 8 A schematic diagram of the structure of the component.

[0016] In the diagram: 1. Base plate; 21. Connecting seat; 22. Rotating plate one; 23. Rotating plate two; 24. Mounting plate; 25. Motor one; 26. Rotating rod; 27. Curved ring; 28. Intermittent rotating disk; 29. ​​Placement plate; 210. Fixing plate; 211. Clamp one; 212. Clamp two; 31. Motor two; 32. Screw; 33. Slide plate; 34. Limiting rod; 35. Limiting strip; 4. Restrictible caster wheel; 5. Handle. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, the internal connection of two elements, or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0021] Please refer to Figure 1-8 A metal heat treatment fixing frame includes a base plate 1, a swivel caster 4 fixedly connected to one end of the base plate 1, a handle 5 fixedly connected to the base plate 1, a connecting seat 21 fixedly connected to the other end of the base plate 1, a rotating plate 22 rotatably connected to the connecting seat 21 at one end, a mounting plate 24 rotatably connected to the other end of the rotating plate 22, a drive assembly mounted on the mounting plate 24, a flip fixing assembly mounted on the output end of the drive assembly, a rotating plate 23 rotatably connected to the center of the rotating plate 22, and a push assembly mounted on the base plate 1, wherein the output end of the push assembly is connected to the rotating plate 23. The drive assembly is used to rotate the metal fixed on the flip-fixing assembly. The push assembly is used to push the rotating plate 23 and the rotating plate 22 to move crosswise. The rotating plate 23 moves closer to or away from the connecting seat 21, causing the mounting plate 24 to rise or fall. The base plate 1 provides stable support for the overall structure and can restrict the omnidirectional wheels 4 and handles 5 to move the fixed frame flexibly, adapting to different heat treatment scenarios. The connecting seat 21, the rotating plate 22, and the rotating plate 23 constitute the core structure for height adjustment. With the push assembly, the height of the mounting plate 24 can be precisely adjusted to meet the position requirements of different furnaces or heating elements. The drive assembly drives the flip-fixing assembly to rotate, ensuring that the metal parts are heated evenly. The overall structure realizes the integrated function of "movement, fixing, height adjustment, and rotational heat treatment", improving the continuity of operation.

[0022] In a preferred embodiment of this utility model, the driving assembly includes a motor 25 fixedly connected to the mounting plate 24, a rotating rod 26 fixedly connected to the output end of the motor 25, and a curved ring 27 fixedly connected to the rotating rod 26. The motor 25 drives the rotating rod 26 to rotate, causing the rotating rod 26 to drive the flipping fixed assembly on the curved ring 27 to move. The motor 25 provides stable power to the driving assembly, and the rotating rod 26 serves as a transmission carrier to ensure efficient power transmission to the curved ring 27. The curved ring 27, through a special structural design, can accurately drive the flipping fixed assembly to move along a preset trajectory, avoiding shaking or deviation during the rotation of the metal parts, ensuring the stability of the heat treatment process. At the same time, the motor-driven method does not require manual intervention, reducing operational errors.

[0023] In a preferred embodiment of this utility model, the flipping and fixing assembly includes an intermittent rotating disk 28 rotatably connected to the mounting plate 24, a placement plate 29 fixedly connected to the intermittent rotating disk 28, a plurality of fixing plates 210 linearly arranged and fixedly connected to the placement plate 29, a first clamp 211 and a second clamp 212 mounted on the fixing plate 210. Both clamps 211 and 212 are mounted on the fixing plate 210 by bolts and nuts. The bolt and nut installation method of clamps 211 and 212 allows for flexible adjustment of the clamping distance according to the size of the metal parts, adapting to metal parts of different specifications and solving the problem of poor adaptability of traditional fixing clamps. The plurality of fixing plates 210 linearly arranged on the placement plate 29 can fix multiple metal parts at the same time, improving the efficiency of a single heat treatment. The intermittent rotating disk 28 is rotatably connected to the mounting plate 24, providing stable support for the intermittent rotation of the metal parts.

[0024] In a preferred embodiment of this utility model, the rotating rod 26 rotates, and the curved ring 27 causes the intermittent rotating disk 28 to drive the placement plate 29 to rotate intermittently on the mounting plate 24 along a special trajectory. The intermittent rotation design avoids collisions or positional displacements that may be caused by continuous rotation of the metal parts, while ensuring that the metal parts are fully heated in each dwell stage, reducing the problem of insufficient local heating caused by excessive rotation. The cooperation between the curved ring 27 and the intermittent rotating disk 28 makes the rotation trajectory of the placement plate 29 precise and controllable, further ensuring uniform heating of all parts of the metal parts and reducing the risk of thermal stress.

[0025] Please refer to Figure 8 In a preferred embodiment of this utility model, the driving component includes symmetrically arranged limiting strips 35 fixedly connected to the base plate 1, a second motor 31 fixedly connected to the base plate 1, a screw 32 fixedly connected to the output end of the second motor 31, a limiting rod 34 fixedly connected to the base plate 1, and a sliding plate 33 threadedly connected to the screw 32. One end of the second rotating plate 23 is rotatably connected to the sliding plate 33, and the other end of the second rotating plate 23 is slidably connected to the mounting plate 24. The second motor 31 is used to drive the sliding plate 33 to move along the axial direction of the screw 32. The second motor 31 drives the screw 32 to rotate, and drives the sliding plate 33 to move smoothly through threaded transmission. This is more precise and labor-saving than manual adjustment. The symmetrically arranged limiting strips 35 and limiting rod 34 together limit the sliding plate 33 to prevent the sliding plate 33 from deviating or shaking during movement, ensuring that the second rotating plate 23 can stably drive the mounting plate 24 to rise and fall, thus improving the reliability of height adjustment.

[0026] In a preferred embodiment of this utility model, a groove is provided on the limiting strip 35, and the slide plate 33 is slidably connected to the limiting strip 35. The groove on the limiting strip 35 provides a clear movement trajectory for the slide plate 33, making the slide plate 33 slide more smoothly along the axis of the screw 32, avoiding uneven force on the rotating plate 23 due to the offset of the slide plate 33, thereby preventing the mounting plate 24 from tilting when it is raised or lowered, and ensuring the stability of the position of the metal parts during the height adjustment process.

[0027] In a preferred embodiment of this utility model, when the screw 32 rotates, the slide plate 33 drives the rotating plate 23 to approach the motor 31, and the mounting plate 24 will be raised away from the base plate 1. By moving the slide plate 33 towards the motor 31, the height of the mounting plate 24 can be accurately raised, which can be adapted to heat treatment scenarios where the furnace is high or the heating element is positioned high, ensuring that the metal parts are in the optimal heating area, avoiding the problem of insufficient heating of the top of the metal parts due to insufficient height, and improving the quality of heat treatment.

[0028] In a preferred embodiment of this utility model, when the screw 32 rotates, the slide plate 33 drives the rotating plate 23 away from the motor 31, and the mounting plate 24 will decrease in height away from the base plate 1. Through the movement of the slide plate 33 away from the motor 31, the height of the mounting plate 24 can be accurately reduced, which can be adapted to heat treatment scenarios where the furnace is low or the heating element is positioned low. At the same time, it is convenient for operators to place or remove metal parts, avoiding inconvenience caused by the mounting plate 24 being too high, and improving the safety and convenience of use.

[0029] Other embodiments: The curved ring 27 and the intermittent rotating disk 28 can also adopt existing technologies, such as replacing the curved ring 27 with a worm gear and the intermittent rotating disk 28 with a worm wheel. The motor 25 on the mounting plate 24 is started, and the motor 25 drives the rotating rod 26 to rotate. The worm gear fixed on the rotating rod 26 rotates synchronously. Since the worm gear meshes with the worm wheel in the flipping fixing assembly, the rotation of the worm gear will drive the worm wheel to rotate stably on the mounting plate 24. The worm wheel will then drive the placement plate 29 fixedly connected to it to rotate synchronously. The metal parts fixed on the placement plate 29 by the clamp 211 and the clamp 212 will rotate accordingly, ensuring that all parts of the metal parts receive heat evenly and completing the heat treatment process.

[0030] When using this metal heat treatment fixture, firstly, move the fixture to the designated position next to the heat treatment equipment using the casters 4 at one end of the base plate 1 and the handle 5 on the base plate 1. Then, lock the casters 4 to prevent slippage. Next, place the metal part to be heat treated on the placement plate 29 of the flip-fixing assembly. Adjust the distance between clamp 1 211 and clamp 212 on the fixing plate 210 according to the size of the metal part using bolts and nuts to firmly clamp the metal part and prevent displacement during the heat treatment process.

[0031] Then, based on the furnace height or heating element position of the heat treatment equipment, the push assembly is activated to adjust the height of the mounting plate 24: the second motor 31 on the base plate 1 is activated, the second motor 31 drives the screw 32 to rotate, and the sliding plate 33 threadedly connected to the screw 32 slides stably along the groove of the limiting strip 35 and the limiting rod 34; if the height needs to be increased, the sliding plate 33 drives the second rotating plate 23 to move closer to the second motor 31, and the second rotating plate 23 and the first rotating plate 22 move in opposite directions, pushing the mounting plate 24 away from the base plate 1 and rising; if the height needs to be decreased, the sliding plate 33 drives the second rotating plate 23 away from the second motor 31, and the mounting plate 24 descends towards the base plate 1 until the metal part is in a suitable heat treatment position.

[0032] Finally, the drive assembly is started for heat treatment: the motor 25 on the mounting plate 24 is started, the motor 25 drives the rotating rod 26 to rotate, and the curved ring 27 on the rotating rod 26 rotates accordingly. The curved ring 27 acts on the intermittent rotating disk 28, causing the intermittent rotating disk 28 to drive the placement plate 29 to rotate intermittently on the mounting plate 24 along a special trajectory. The metal parts fixed on the placement plate 29 rotate synchronously and intermittently, ensuring that all parts of the metal parts are heated evenly, thus completing the heat treatment process.

[0033] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations will be apparent to those skilled in the art without actually departing from the scope and spirit of the claims, such as variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.

[0034] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fixing bracket for metal heat treatment, characterized in that: Includes a base plate (1), a swivel caster (4) fixedly connected to one end of the base plate (1), a handle (5) fixedly connected to the base plate (1), a connecting seat (21) fixedly connected to the other end of the base plate (1), a rotating plate (22) rotatably connected to the connecting seat (21) at one end, a mounting plate (24) rotatably connected to the other end of the rotating plate (22), a drive assembly mounted on the mounting plate (24), a flip-fixing assembly mounted on the output end of the drive assembly, a rotating plate (23) rotatably connected to the center of the rotating plate (22), and a push assembly mounted on the base plate (1), the output end of the push assembly being connected to the rotating plate (23); The drive assembly is used to drive the metal fixed on the flipping and fixing assembly to rotate, and the push assembly is used to push the rotating plate two (23) and the rotating plate one (22) to move in opposite directions. The rotating plate two (23) moves closer to or further away from the connecting seat (21), causing the mounting plate (24) to rise or fall.

2. The metal heat treatment fixture according to claim 1, characterized in that, The drive assembly includes a motor (25) fixedly connected to the mounting plate (24), a rotating rod (26) fixedly connected to the output end of the motor (25), and a curved ring (27) fixedly connected to the rotating rod (26). The motor (25) is used to drive the rotating rod (26) to rotate, so that the rotating rod (26) drives the flipping fixed assembly on the curved ring (27) to move.

3. The metal heat treatment fixture according to claim 2, characterized in that, The flipping and fixing assembly includes an intermittent rotating disk (28) rotatably connected to the mounting plate (24), a placement plate (29) fixedly connected to the intermittent rotating disk (28), a number of fixed plates (210) linearly arranged fixedly connected to the placement plate (29), a clamp one (211) mounted on the fixed plate (210), and a clamp two (212) mounted on the fixed plate (210). The clamp one (211) and the clamp two (212) are both mounted on the fixed plate (210) by bolts and nuts.

4. A metal heat treatment fixture according to claim 3, characterized in that, Rotating rod (26) rotates, and curved ring (27) causes intermittent rotating disk (28) to drive placement plate (29) to rotate intermittently on mounting plate (24) along a special trajectory.

5. A metal heat treatment fixture according to claim 1, characterized in that, The driving component includes a limiting strip (35) symmetrically arranged on the base plate (1), a motor (31) fixedly connected to the base plate (1), a screw (32) fixedly connected to the output end of the motor (31), a limiting rod (34) fixedly connected to the base plate (1), and a sliding plate (33) threadedly connected to the screw (32). One end of the rotating plate (23) is rotatably connected to the sliding plate (33), and the other end of the rotating plate (23) is slidably connected to the mounting plate (24). The motor (31) is used to drive the sliding plate (33) to move along the axis of the screw (32).

6. A metal heat treatment fixture according to claim 5, characterized in that, The limiting strip (35) has a groove, and the sliding plate (33) is slidably connected to the limiting strip (35).

7. A metal heat treatment fixture according to claim 5, characterized in that, When the screw (32) rotates, the slide plate (33) drives the rotating plate (23) to approach the motor (31), and the mounting plate (24) will be raised away from the base plate (1).

8. A metal heat treatment fixture according to claim 5, characterized in that, When the screw (32) rotates, the slide plate (33) drives the rotating plate (23) away from the motor (31), and the mounting plate (24) will move away from the base plate (1) and drop in height.

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