Gradient heat treatment device for metal rod-shaped workpiece

Abstract

The invention belongs to the technical field of metal heat treatment, and particularly relates to a metal rod-shaped workpiece gradient heat treatment device which comprises a base frame, a transfer platform is arranged at the upper end of the base frame and comprises an electronic track, a heat treatment structure is arranged at the upper end of the transfer platform, and an adjusting structure is arranged on the surface of the heat treatment structure. The heat treatment structure comprises a transfer frame, the transfer frame is slidably connected to the surface of the electronic track, a connecting platform is vertically slidably connected to the surface of the transfer frame, a heating coil is arranged on the surface of the connecting platform, and a cooling pond is arranged on the surface of the transfer platform. By arranging the moving platform and the adjusting structure, when gradient heat treatment is conducted on the metal rod piece, the multiple attaching plates can wrap the metal rod piece from top to bottom in sequence, so that it is ensured that heat cannot be lost, the contact area of the attaching plates and the metal rod piece every time is the area after heat transfer, and the heat transfer efficiency is improved. And the metal rod piece subjected to gradient heat treatment can be accurately wrapped for preventing heat loss.

Description

Technical Field

[0001] The invention belongs to the technical field of metal heat treatment, in particular to a gradient heat treatment device for a metal rod-shaped workpiece. Background Art

[0002] Metal rod-shaped workpiece refers to a rod-shaped object made of metal, among which metal rod is one kind of metal rod-shaped workpiece. Metal rod heat treatment is a process of heating the metal rod in a certain medium to a suitable temperature, keeping it at this temperature for a certain period of time, and then cooling it at different speeds in different media to control its performance by changing the surface or internal structure of the metal rod. Metal rod gradient heat treatment is based on this process, through specific heating and cooling methods, to form a gradient distribution of performance or organizational structure inside the metal rod.

[0003] A patent application with publication number CN221028566U discloses a gradient heat treatment device for a rod-shaped metal workpiece, including a cooling device, a support rod, an infrared thermometer, an induction heating coil, a rotating part and a heat insulation plate, wherein the top surface of the cooling device has an opening, and the liquid inlet and the liquid outlet are arranged on the side wall of the cooling device. The device can seal the upper end of the rod-shaped metal workpiece located in the induction heating coil, thereby effectively reducing the heat loss of the upper end of the rod-shaped metal workpiece, while improving the heat transfer efficiency to the lower end of the rod-shaped metal material, improving the testing efficiency and saving energy consumption.

[0004] There are still some problems in the actual application of the above scheme. When the device is used to perform gradient heat treatment on the metal rod, although the upper end of the metal rod can be kept closed during the heating process to reduce the heat loss of the upper end of the metal rod, the temperature gradient formed inside the metal rod is transmitted downward. When the heat is transferred to the bottom of the metal rod, it is also necessary to ensure that the temperature below the metal rod will not dissipate. However, if the heat is not transferred to the designated area of ​​the metal rod and the area is sealed and wrapped, it will cause thermal stress to be concentrated in the wrapped area, increasing the risk of cracks. Therefore, when the heat is not fully transferred, the area without heat transfer cannot be closed and wrapped.

[0005] To this end, the present invention provides a gradient heat treatment device for a metal rod-shaped workpiece. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a gradient heat treatment device for a metal rod-shaped workpiece described in the present invention comprises a base frame, a transfer platform is provided at the upper end of the base frame, the transfer platform comprises an electron track, a heat treatment structure is provided at the upper end of the transfer platform, and an adjustment structure is provided on the surface of the heat treatment structure; the heat treatment structure comprises a transfer frame, the transfer frame is slidably connected to the surface of the electron track, a connection platform is slidably connected to the surface of the transfer frame, a heating coil is provided on the surface of the connection platform, and a cooling pool is provided on the surface of the transfer platform; the adjustment structure comprises: a connection plate, the connection plate is provided on the surface of the transfer frame; A bonding plate, several of the bonding plates are slidably connected to the side walls of the connecting plate, and an aluminum film is provided on the arc surface of the bonding plate; a pressure plate, the pressure plate is provided at one end of the bonding plate close to the connecting plate; a coil spring, the coil spring is provided at one end of the pressure plate; a connecting gear, several of the connecting gears are rotatably connected to one end of the connecting plate, and the connecting gear is connected to the coil spring; a lifting plate, the lifting plate is slidably connected to the surface of the connecting plate up and down, and a first tooth plate, a second tooth plate and a third tooth plate are provided at one end of the lifting plate close to the connecting gear, the first tooth plate is located at the uppermost end of the lifting plate, and the third tooth plate is located at the lowermost end of the lifting plate, and the length of the tooth plate gradually increases from top to bottom.

[0008] Preferably, the heat treatment structure also includes: a moving platform, which is slidably connected to the surface of the electronic track; a screw, which is rotatably connected to the inside of the transfer frame, and the connecting platform is threadedly connected to the screw; a sliding rod, which is arranged at one end close to the screw, and the connecting platform slides on the surface of the sliding rod; the adjustment structure also includes: an adjustment frame, which is arranged at one end of the connecting plate; a connecting block, which is arranged at one end of the lifting plate, and the connecting block slides inside the adjustment frame; a connecting rope, which is arranged at the lower end of the lifting plate; a winding roller, which is rotatably connected to the lower end of the moving platform, and one end of the connecting rope is connected to the arc surface of the winding roller; a movable gear, which is arranged at one end of the winding roller; an adjustment rack, which is arranged at one end of the upper end of the transfer platform close to the electronic track, and the adjustment rack is meshed with the movable gear.

[0009] Preferably, a return spring is provided at one end of the connecting block, and one end of the return spring is connected to the inner wall of the regulating frame.

[0010] Preferably, a force buckle sleeve is provided at one end of the lower end of the mobile platform close to the winding roller, and a plurality of oblique teeth are provided inside the force buckle sleeve, and the winding roller rotates inside the force buckle sleeve.

[0011] Preferably, a clamping frame is provided at the lower end of the connecting platform, and a plurality of clamping blocks are slidably connected inside the clamping frame.

[0012] Preferably, a fixing rod is provided at one end of the upper end of the transfer platform close to the adjusting rack, and the adjusting rack slides on the surface of the fixing rod.

[0013] Preferably, a placement structure is provided inside the base frame; the placement structure includes: a material holding frame, which is arranged inside the base frame; a stretching bar, which is slidably connected to the bottom of the material holding frame; a fixed frame, which is arranged inside the base frame; a rotating shaft, which is arranged at the upper end of the fixed frame; a rotating tray, which is arranged on the arc surface of the rotating shaft, and the rotating tray is parallel to the bottom surface of the base frame in an initial state; and a limiting support plate, which is slidably connected to one end of the base frame close to the fixed frame.

[0014] Preferably, a plurality of limiting pads are provided inside the base frame at one end close to the rotating tray, and the limiting pads are in contact with the rotating tray.

[0015] Preferably, a plurality of adjustment springs are provided at one end of the material containing frame.

[0016] Preferably, a connecting arm is provided at one end of the movable platform, a pressing block is provided at one end of the connecting arm, and the pressing block is in contact with the material containing frame.

[0017] The beneficial effects of the present invention are as follows: 1. The device for gradient heat treatment of a metal rod-shaped workpiece described in the present invention provides a moving platform and an adjusting structure. When performing gradient heat treatment on a metal rod, the metal rod is first clamped under the connecting platform, and the clamping frame at the lower end of the connecting platform can also clamp metal rods of different diameters. Then, the electronic track and the heating coil are started. The heating coil will perform heat treatment on the upper end of the metal rod. Then, the heat will be transferred to the bottom of the metal rod, and the moving platform will drive the metal rod to move toward the cooling pool. During the movement, a number of bonding plates will wrap the metal rod from top to bottom in turn to ensure that heat will not be lost. Each time the bonding plate contacts the metal rod, the area after heat transfer is the area after heat transfer, so that the metal rod subjected to gradient heat treatment can be accurately wrapped to prevent heat loss.

[0018] 2. The device for gradient heat treatment of metal rod-shaped workpieces described in the present invention sets a material holding frame. When gradient heat treatment of metal rods is required, firstly, a plurality of metal rods are placed into the material holding frame. Then, the stretching bar is started. The stretching bar can push out a metal rod at the bottom of the material holding frame and push it onto the surface of a rotating tray. Then, the rotating shaft is started. The rotating shaft will drive the rotating tray to rotate together and make the metal rods on the surface of the rotating tray perpendicular to the surface of the transfer platform. Then, the limiting tray is started. The metal rods on the surface of the rotating tray can be pushed to the inside of the clamping frame for clamping, thereby automatically loading the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention; Figure 2 is a front view of the first embodiment of the present invention; Figure 3 yes Figure 2 A partial enlarged view of the middle part; Figure 4 is a stereogram of a transfer frame of the present invention; Figure 5 is a three-dimensional diagram of the connecting plate of the present invention; Figure 6 is a bottom view of the mobile platform of the present invention; Figure 7 It is a position diagram of the winding roller and the connecting rope of the present invention; Figure 8 is an internal view of the clamping frame of the present invention; Fig. 9 is a stereogram of the transfer platform of the present invention; Fig.10 It is a three-dimensional diagram of the placement structure of the present invention; Fig.11 It is a position diagram of the limiting tray and the metal rod of the present invention; Fig.12 yes Fig.11 A partial enlarged view of point B in the middle; Fig.13 It is a three-dimensional diagram of the material containing frame of the present invention; In the figure: 1, base frame; 2, transfer platform; 21, electronic track; 3, heat treatment structure; 31, transfer frame; 32, screw; 33, mobile platform; 34, sliding rod; 35, connecting platform; 36, clamping frame; 37, heating coil; 38, clamping block; 39, cooling pool; 4, adjustment structure; 401, connecting plate; 402, fixing rod; 403, adjusting rack; 404, laminating plate; 405, aluminum film; 406, pressing plate; 407, coil spring; 408, connecting gear; 409, first tooth plate ... 10. Second tooth plate; 411. Third tooth plate; 412. Lifting plate; 413. Movable gear; 414. Winding roller; 415. Force buckle sleeve; 416. Connecting rope; 417. Adjusting frame; 418. Connecting block; 419. Reset spring; 5. Placing structure; 501. Material holding frame; 502. Connecting arm; 503. Rotating tray; 504. Limiting pad; 505. Stretching bar; 506. Pressing block; 507. Rotating shaft; 508. Limiting support plate; 509. Fixed frame; 510. Adjusting spring; 6. Metal rod. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0022] like Figures 1 to 13As shown, a gradient heat treatment device for a metal rod-shaped workpiece according to an embodiment of the present invention comprises a base frame 1, a transfer platform 2 is provided at the upper end of the base frame 1, the transfer platform 2 comprises an electron track 21, a heat treatment structure 3 is provided at the upper end of the transfer platform 2, and an adjustment structure 4 is provided on the surface of the heat treatment structure 3; the heat treatment structure 3 comprises a transfer frame 31, the transfer frame 31 is slidably connected to the surface of the electron track 21, a connection platform 35 is slidably connected to the surface of the transfer frame 31 up and down, a heating coil 37 is provided on the surface of the connection platform 35, and a cooling pool 39 is provided on the surface of the transfer platform 2; the adjustment structure 4 comprises: a connection plate 401, the connection plate 401 is provided on the surface of the transfer frame 31; a bonding plate 404, a plurality of bonding plates 404 are slidably connected to the side of the connection plate 401 wall, and the arc surface of the bonding plate 404 is provided with an aluminum film 405; a pressing plate 406, which is arranged at one end of the bonding plate 404 close to the connecting plate 401; a coil spring 407, which is arranged at one end of the pressing plate 406; a connecting gear 408, a plurality of connecting gears 408 are rotatably connected to one end of the connecting plate 401, and the connecting gear 408 is connected to the coil spring 407; a lifting plate 412, which is slidably connected to the surface of the connecting plate 401 up and down, and the end of the lifting plate 412 close to the connecting gear 408 is provided with a first tooth plate 409, a second tooth plate 410 and a third tooth plate 411, the first tooth plate 409 is located at the uppermost end of the lifting plate 412, and the third tooth plate 411 is located at the lowermost end of the lifting plate 412, and the length of the tooth plate gradually increases from top to bottom.

[0023] Specifically, the gradient heat treatment device for a metal rod-shaped workpiece of the scheme is mainly used for gradient heat treatment of a metal rod-shaped workpiece such as a metal rod 6. When in use, the metal rod 6 is first fixed inside the connecting platform 35, and the upper end of the metal rod 6 passes through the heating coil 37, the electronic track 21 is started, and the transfer frame 31 will move on the surface of the electronic track 21, and at this time, one end of the heating coil 37 is started to control the power supply of the heating coil 37, and the power supply will pass current to the heating coil 37, so that a magnetic field is generated around the heating coil 37. When the magnetic field contacts the metal rod 6, electromagnetic induction is generated in the metal rod 6, and this induction is generated in the metal Eddy currents are generated in the metal rod 6, and the eddy currents flow inside the metal rod 6 and generate heat, thereby achieving the purpose of heating the top of the metal rod 6. Subsequently, by controlling the heating time of the heating coil 37, a temperature gradient is formed in the metal rod 6. However, in this process, since the metal rod 6 is always exposed to the air, the heated end of the metal rod 6 will dissipate a large amount of heat outward, which will cause a large amount of energy loss on the one hand, and on the other hand, it will also cause the heat transfer efficiency to the lower end of the metal rod 6 to decrease. In addition, if the heat is not transferred to the designated area of ​​the metal rod 6, the area is sealed and wrapped, which will cause thermal stress to be concentrated in the wrapped area, increasing the risk of cracks. For this reason, an adjustment is designed. Structure 4, when the upper end of the metal rod 6 is heated, the lifting plate 412 is pulled downward, and the first tooth plate 409, the second tooth plate 410 and the third tooth plate 411 located at one end of the lifting plate 412 will contact the coil spring 407 and cause the coil spring 407 to contract, and then by controlling the moving speed of the lifting plate 412, after the heat of the metal rod 6 is transferred to the lower end of the top bonding plate 404, the lifting plate 412 will drive the first tooth plate 409 to move until it is no longer in contact with the coil spring 407 at one end of the top bonding plate 404, and the coil spring 407 will release its elastic force, drive the bonding plate 404 to move toward the direction of the metal rod 6, and the metal rod 6 is pressed. 6 is wrapped, and the aluminum film 405 on the inner wall of the bonding plate 404 can effectively reflect heat, reduce heat loss, and achieve the effect of heat preservation. At this time, the position where the heat of the metal rod 6 is not transmitted will not be wrapped. As the lifting piece 412 continues to move downward, the metal rod 6 will be gradually wrapped, thereby achieving precise temperature preservation. When the transfer frame 31 drives the metal rod 6 to move above the cooling pool 39, the connection platform 35 is started to move downward for a distance, so that the lower end of the metal rod 6 can be inserted into the cooling pool 39 and contact with the coolant, thereby quickly changing the crystal structure of the metal rod 6, thereby improving the hardness, strength and wear resistance of the metal rod 6, and completing the gradient heat treatment.

[0024] like Figures 1 to 7As shown, the heat treatment structure 3 also includes: a moving platform 33, which is slidably connected to the surface of the electron track 21; a screw 32, which is rotatably connected to the inside of the transfer frame 31, and the connecting platform 35 is threadedly connected to the screw 32; a sliding rod 34, which is arranged at one end close to the screw 32, and the connecting platform 35 slides on the surface of the sliding rod 34; the adjustment structure 4 also includes: an adjustment frame 417, which is arranged at one end of the connecting plate 401; a connecting block 418, which is arranged at one end of the lifting plate 412 , and the connecting block 418 slides inside the adjusting frame 417; the connecting rope 416, the connecting rope 416 is arranged at the lower end of the lifting piece 412; the winding roller 414, the winding roller 414 is rotatably connected to the lower end of the moving platform 33, and one end of the connecting rope 416 is connected to the arc surface of the winding roller 414; the movable gear 413, the movable gear 413 is arranged at one end of the winding roller 414; the adjusting rack 403, the adjusting rack 403 is arranged at one end of the upper end of the transfer platform 2 close to the electronic track 21, and the adjusting rack 403 is meshed with the movable gear 413.

[0025] Specifically, when performing gradient heat treatment on the metal rod 6, the movable platform 33 will slide on the surface of the electron track 21, and then after the heat of the metal rod 6 is transferred to the lower end of the top bonding plate 404, the movable gear 413 will move to engage with the adjusting rack 403, so that the movable gear 413 drives the winding roller 414 to rotate, and then the winding roller 414 will tighten the connecting rope 416, so that the connecting rope 416 drives the lifting plate 412 to move downward, thereby accurately wrapping the metal rod 6, and then when the metal rod 6 moves to above the cooling pool 39, the screw 32 is started to rotate. Since one end of the connecting platform 35 is threadedly connected to the screw 32, the other end of the connecting platform 35 slides on the surface of the sliding rod 34, so that the connecting platform 35 will drive the metal rod 6 to be inserted into the cooling pool 39.

[0026] like Figure 7 As shown, a return spring 419 is provided at one end of the connecting block 418 , and one end of the return spring 419 is connected to the inner wall of the adjusting frame 417 .

[0027] Specifically, by providing the reset spring 419 , after the gradient heat treatment of the metal rod 6 is completed, the reset spring 419 will release its elastic force to assist in driving the connecting rope 416 and the lifting sheet 412 to reset.

[0028] like Figure 6 As shown, a force buckle sleeve 415 is provided at one end of the lower end of the mobile platform 33 close to the winding roller 414, and a plurality of oblique teeth are provided inside the force buckle sleeve 415, and the winding roller 414 rotates inside the force buckle sleeve 415.

[0029] Specifically, by setting the force buckle sleeve 415, when the mobile platform 33 moves to make the winding roller 414 rotate, the winding roller 414 can rotate inside the force buckle sleeve 415, and the bevel teeth inside the force buckle sleeve 415 can arbitrarily fix the rotation of the winding roller 414, thereby avoiding the phenomenon of reversal of the winding roller 414 when the movable gear 413 is no longer in contact with the adjusting rack 403.

[0030] like Figures 1 to 8 As shown, a clamping frame 36 is provided at the lower end of the connecting platform 35 , and a plurality of clamping blocks 38 are slidably connected inside the clamping frame 36 .

[0031] Specifically, by setting a plurality of clamping blocks 38, when the metal rod 6 passes through the clamping frame 36, the clamping block 38 is started and moves toward the center of the metal rod 6, so that the metal rod 6 of any diameter can be well fixed.

[0032] like Figures 1 to 3 As shown, a fixing rod 402 is provided at one end of the upper end of the transfer platform 2 close to the adjusting rack 403 , and the adjusting rack 403 slides on the surface of the fixing rod 402 .

[0033] Specifically, by setting the adjustment rack 403 to slide on the surface of the fixed rod 402 and to be fixed, the contact time between the movable gear 413 and the adjustment rack 403 can be adjusted, so that the metal rods 6 with different heat conduction speeds can be accurately wrapped. Embodiment 2

[0034] like Figures 9 to 13 As shown, compared with Example 1, another implementation of the present invention is: a placement structure 5 is provided inside the base frame 1; the placement structure 5 includes: a material holding frame 501, which is arranged inside the base frame 1; a stretching bar 505, which is slidably connected to the bottom of the material holding frame 501; a fixed frame 509, which is arranged inside the base frame 1; a rotating shaft 507, which is arranged at the upper end of the fixed frame 509; a rotating tray 503, which is arranged on the arc surface of the rotating shaft 507, and the rotating tray 503 is parallel to the bottom surface of the base frame 1 in the initial state; and a limiting support plate 508, which is slidably connected to one end of the base frame 1 close to the fixed frame 509.

[0035] Specifically, by setting up the placement structure 5, when performing gradient heat treatment on the metal rod 6, several metal rods 6 can be placed inside the material holding frame 501. At this time, a metal rod 6 will fall at the bottom of the material holding frame 501. At this time, the stretching bar 505 is started, and the stretching bar 505 will push the metal rod 6 at the bottom of the material holding frame 501 to the surface of the rotating tray 503. The rotating shaft 507 is started, and the rotating shaft 507 will drive the rotating tray 503 to rotate, so that the metal rod 6 rotates to the bottom of the clamping frame 36, and at this time, a part of the metal rod 6 is still in contact with the limiting support plate 508. At this time, the limiting support plate 508 is started, and the limiting support plate 508 will drive the metal rod 6 to move upward, so that the metal rod 6 is inserted into the inside of the clamping frame 36 for fixation, and the automatic loading of the metal rod 6 is completed.

[0036] like Figures 9 to 13 As shown, a plurality of limiting pads 504 are provided at one end of the base frame 1 close to the rotating tray 503 , and the limiting pads 504 are in contact with the rotating tray 503 .

[0037] Specifically, by setting the limiting pad 504, when the stretching bar 505 pushes the metal rod 6 to the surface of the rotating tray 503, the limiting pad 504 can ensure that the rotating tray 503 is parallel to the metal rod 6, so that the metal rod 6 can move smoothly to the surface of the rotating tray 503.

[0038] like Figures 9 to 13 As shown, a plurality of adjustment springs 510 are provided at one end of the material holding frame 501 .

[0039] Specifically, by setting an adjustment spring 510, when a plurality of metal rods 6 are placed inside the material holding frame 501, the adjustment spring 510 is started, and the adjustment spring 510 will continuously tighten and release the elastic force, causing the material holding frame 501 to shake, thereby reducing the probability of blockage of the metal rods 6 inside the material holding frame 501.

[0040] like Figures 9 to 13 As shown, a connecting arm 502 is provided at one end of the movable platform 33 , a pressing block 506 is provided at one end of the connecting arm 502 , and the pressing block 506 is in contact with the material holding frame 501 .

[0041] Specifically, by setting the pressure block 506, during the movement of the mobile platform 33, the pressure block 506 at one end of the mobile platform 33 will contact with the material holding frame 501 and squeeze the material holding frame 501, thereby making the adjustment spring 510 taut; when the mobile platform 33 is reset, the adjustment spring 510 will release the elastic force due to the absence of the pressure of the pressure block 506, and finally causing the material holding frame 501 to shake.

[0042] Working principle: When in use, first place several metal rods 6 inside the material holding frame 501. At this time, a metal rod 6 will fall at the bottom of the material holding frame 501. At this time, start the stretching bar 505, which will push the metal rod 6 at the bottom of the material holding frame 501 to the surface of the rotating tray 503. Start the rotating shaft 507, which will drive the rotating tray 503 to rotate, so that the metal rod 6 rotates to the bottom of the clamping frame 36, and at this time, a part of the metal rod 6 is still in contact with the limiting support plate 508. At this time, start the limiting support plate 508, which will drive the metal rod 6 to move upward, so that the metal rod 6 is inserted into the clamping frame 36, start the clamping block 38, the clamping block 38 will move toward the center of the metal rod 6, so as to fix the metal rod 6, start the electronic track 21, the mobile platform 33 will drive the transfer frame 31 to slide on the surface of the electronic track 21, and at this time start the power supply of one end of the heating coil 37 for controlling the heating coil 37, the power supply will pass current to the heating coil 37, so that a magnetic field is generated around the heating coil 37, when the magnetic field contacts the metal rod 6, electromagnetic induction is generated in the metal rod 6, this induction will generate eddy current in the metal rod 6, the eddy current flows inside the metal rod 6 and generates heat, so as to achieve the purpose of heating the top of the metal rod 6, and then By controlling the heating time of the heating coil 37, a temperature gradient is formed on the metal rod 6. At this time, the movable gear 413 will move to mesh with the adjusting rack 403, so that the movable gear 413 drives the winding roller 414 to rotate, and then the winding roller 414 will tighten the connecting rope 416, so that the connecting rope 416 drives the lifting plate 412 to move downward. After the heat of the metal rod 6 is transferred to the lower end of the top bonding plate 404, the lifting plate 412 will drive the first tooth plate 409 to move until it is no longer in contact with the coil spring 407 at one end of the top bonding plate 404. At this time, the coil spring 407 will release its elastic force, driving the bonding plate 404 to move toward the direction of the metal rod 6. , and wrap the metal rod 6. The aluminum film 405 on the inner wall of the bonding plate 404 can effectively reflect heat, reduce heat loss, and achieve the effect of heat preservation. At this time, the position of the metal rod 6 to which the heat is not transmitted will not be wrapped. As the lifting plate 412 continues to move downward, the metal rod 6 will be gradually wrapped, thereby achieving precise temperature preservation. When the transfer frame 31 drives the metal rod 6 to move above the cooling pool 39, the connection platform 35 is started to move downward for a distance, so that the lower end of the metal rod 6 can be inserted into the cooling pool 39 and contact with the coolant, thereby quickly changing the crystal structure of the metal rod 6, thereby improving the hardness, strength and wear resistance of the metal rod 6, and completing the gradient heat treatment.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A gradient heat treatment device for a metal rod-shaped workpiece, characterized in that: It comprises a base frame (1), a transfer platform (2) is provided at the upper end of the base frame (1), the transfer platform (2) comprises an electron track (21), a heat treatment structure (3) is provided at the upper end of the transfer platform (2), and an adjustment structure (4) is provided on the surface of the heat treatment structure (3); The heat treatment structure (3) comprises a transfer frame (31), the transfer frame (31) is slidably connected to the surface of the electron track (21), a connection platform (35) is slidably connected to the surface of the transfer frame (31) up and down, a heating coil (37) is provided on the surface of the connection platform (35), and a cooling pool (39) is provided on the surface of the transfer platform (2); The regulating structure (4) comprises: A connecting plate (401), the connecting plate (401) being arranged on a surface of the transfer frame (31); A bonding plate (404), wherein a plurality of the bonding plates (404) are slidably connected to the side wall of the connecting plate (401), and an aluminum film (405) is provided on the arc surface of the bonding plate (404); A pressing plate (406), the pressing plate (406) being arranged at one end of the laminating plate (404) close to the connecting plate (401); a coil spring (407), the coil spring (407) being arranged at one end of the pressing plate (406); A connecting gear (408), wherein a plurality of the connecting gears (408) are rotatably connected to one end of the connecting plate (401), and the connecting gears (408) are connected to the coil spring (407); A lifting plate (412), the lifting plate (412) being slidably connected to the surface of the connecting plate (401) up and down, and a first tooth plate (409), a second tooth plate (410) and a third tooth plate (411) are provided at one end of the lifting plate (412) close to the connecting gear (408), the first tooth plate (409) being located at the uppermost end of the lifting plate (412), the third tooth plate (411) being located at the lowermost end of the lifting plate (412), and the length of the tooth plate gradually increases from top to bottom.

2. A gradient heat treatment device for a metal rod-shaped workpiece according to claim 1, characterized in that: The heat treatment structure (3) further comprises: A mobile platform (33), the mobile platform (33) being slidably connected to the surface of the electron track (21); A screw rod (32), the screw rod (32) being rotatably connected to the interior of the transfer frame (31), and the connecting platform (35) being threadedly connected to the screw rod (32); A sliding rod (34), wherein the sliding rod (34) is arranged at one end close to the screw rod (32), and the connecting platform (35) slides on the surface of the sliding rod (34); The regulating structure (4) further comprises: an adjustment frame (417), the adjustment frame (417) being arranged at one end of the connecting plate (401); a connecting block (418), the connecting block (418) being arranged at one end of the lifting plate (412), and the connecting block (418) sliding inside the adjusting frame (417); a connecting rope (416), the connecting rope (416) being arranged at the lower end of the lifting plate (412); A winding roller (414), the winding roller (414) being rotatably connected to the lower end of the mobile platform (33), and one end of the connecting rope (416) being connected to the arc surface of the winding roller (414); a movable gear (413), wherein the movable gear (413) is arranged at one end of the winding roller (414); An adjusting rack (403) is provided at an end of the upper end of the transfer platform (2) close to the electronic track (21), and the adjusting rack (403) is meshed with the movable gear (413).

3. A gradient heat treatment device for a metal rod-shaped workpiece according to claim 2, characterized in that: A return spring (419) is provided at one end of the connection block (418), and one end of the return spring (419) is connected to the inner wall of the adjustment frame (417).

4. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 2, characterized in that: A force buckle sleeve (415) is provided at one end of the lower end of the mobile platform (33) close to the winding roller (414), and a plurality of oblique teeth are provided inside the force buckle sleeve (415). The winding roller (414) rotates inside the force buckle sleeve (415).

5. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 2, characterized in that: A clamping frame (36) is provided at the lower end of the connection platform (35), and a plurality of clamping blocks (38) are slidably connected inside the clamping frame (36).

6. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 2, characterized in that: A fixing rod (402) is provided at one end of the upper end of the transfer platform (2) close to the adjusting rack (403), and the adjusting rack (403) slides on the surface of the fixing rod (402).

7. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 1, characterized in that: A placement structure (5) is provided inside the base frame (1); The placement structure (5) comprises: A material holding frame (501), the material holding frame (501) being arranged inside the base frame (1); A stretching bar (505), the stretching bar (505) being slidably connected to the bottom of the material holding frame (501); A fixed frame (509), the fixed frame (509) being arranged inside the base frame (1); A rotating shaft (507), the rotating shaft (507) being arranged at the upper end of the fixed frame (509); A rotating tray (503), the rotating tray (503) being arranged on the arc surface of the rotating shaft (507), and the rotating tray (503) being parallel to the bottom surface of the base frame (1) in an initial state; A limiting support plate (508), the limiting support plate (508) being slidably connected to one end of the base frame (1) close to the fixed frame (509).

8. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 7, characterized in that: A plurality of limiting pads (504) are provided at one end of the base frame (1) close to the rotating tray (503), and the limiting pads (504) are in contact with the rotating tray (503).

9. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 7, characterized in that: One end of the material holding frame (501) is provided with a plurality of adjustment springs (510).

10. The gradient heat treatment device for a metal rod-shaped workpiece according to claim 9, characterized in that: A connecting arm (502) is provided at one end of the mobile platform (33), a pressing block (506) is provided at one end of the connecting arm (502), and the pressing block (506) is in contact with the material holding frame (501).

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