Metal heat treatment feeding device

Abstract

The present application relates to the technical field of feeding device, specifically to a metal heat treatment feeding device, which comprises a device frame and metal billets, and is sequentially provided with a clamping station, a surface treatment station, a heat treatment station and a discharging station in a clockwise direction, and further comprises a feeding and discharging docking mechanism configured to automatically feed the metal billets and continuously discharge the metal billets after heat treatment, a rotary frame rotatably installed on the device frame and intermittently rotated by 90 degrees clockwise, and four clamping frames arrayed on the rotary frame and each provided with a clamping assembly. The present application has the beneficial effect of solving the technical problem that in the existing metal heat treatment feeding device, the four links of feeding, surface treatment, heat treatment and discharging are dispersed in multiple devices or integrated in the same turntable, the power transmission path is complex, the timing control is difficult, and interference is prone to occur between the movement components, thereby making it difficult to realize stable and continuous automatic operation.

Description

Technical Field

[0001] This invention relates to the field of feeding device technology, specifically a metal heat treatment feeding device. Background Technology

[0002] Metal heat treatment is a key process for improving the mechanical properties (such as hardness, toughness, and wear resistance) of metallic materials. It is widely used in machinery manufacturing, automotive parts, and tool processing. For metal billet / bar workpieces, a typical heat treatment process includes: loading, surface pretreatment (removing oxide scale, oil, and other impurities), heating and heat treatment, and unloading after heat treatment. These processes have strict sequential requirements, and the surface treatment and heat treatment stages usually require the workpiece to rotate at a uniform speed to ensure even processing. In existing solutions, the four stages of loading, surface treatment, heat treatment, and unloading are either distributed across multiple machines or, although integrated... While the components are mounted on the same turntable or rotating frame, the power transmission, timing control, and structural design to avoid motion interference between each station are extremely complex, making it difficult to achieve stable and reliable continuous automated operation. For example, when attempting to integrate the brush rollers for surface treatment and the flame heaters for heat treatment around the rotating frame, how to ensure that the driving components of each station do not collide with the clamping components that move with the frame while the rotating frame rotates, and at the same time efficiently transmit rotational power, has always been a technical challenge in this field. As a result, there is currently no fully integrated automatic feeding equipment on the market that can truly realize the entire process of feeding, surface treatment, heat treatment, and unloading. Based on this, the present invention provides a metal heat treatment feeding device to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a metal heat treatment feeding device. This solves the problem that the prior art lacks a device that can complete all processes of intermittent feeding, surface pretreatment, heat treatment and automatic unloading of metal billets in an integrated and fully automatic manner through a single piece of equipment.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A metal heat treatment feeding device includes a device frame, and along a clockwise direction, a clamping station, a surface treatment station, a heat treatment station, and a unloading station are sequentially arranged on the device frame. It also includes: The loading and unloading docking mechanism is configured for automatic loading of metal billets and continuous unloading of heat-treated metal billets. A rotary swivel is rotatably mounted on the equipment frame and rotates 90° clockwise intermittently. Four clamping frames are arrayed on the rotary swivel, and each clamping frame is equipped with a clamping assembly. The clamping assembly includes a bidirectional lead screw rotatably connected to the clamping frame. Two clamping arms with adjustable spacing are drivenly connected to the bidirectional lead screw. A rotary clamping plate is rotatably connected to each clamping arm. A first driven plate is installed at the tail end of one of the rotary clamping plates, and a second driven plate is fixedly installed at one end of the bidirectional lead screw. The transmission slide is slidably connected to the equipment frame. The equipment frame is equipped with a reciprocating drive unit, which is configured to drive the transmission slide to reciprocate along the rotation axis of the rotary frame. The transmission slide is rotatably connected to a first transmission disc at the corresponding clamping station and unloading station, and to a second transmission disc at the corresponding surface treatment station and heat treatment station. Two brush rollers are rotatably connected at the corresponding surface treatment station, and spiral brushes are fixedly mounted on the two brush rollers. The power unit is configured to drive the first transmission disc, the second transmission disc, and the brush roller to rotate, and the two first transmission discs and the two brush rollers rotate in opposite directions; The heat treatment unit is fixedly installed at the heat treatment station.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Preferably, the loading and unloading docking mechanism includes a first transmission module and a unloading box fixedly mounted on the equipment frame. The first transmission module is drivenly connected to an annular loading belt, and the surface of the annular loading belt is evenly distributed with material grooves. The unloading box is disposed above the annular loading belt. A second transmission module is fixedly mounted on the unloading box, and the second transmission module is drivenly connected to an annular unloading belt. A diversion box is connected to the side of the unloading box at the position corresponding to the unloading station.

[0007] Preferably, the bidirectional lead screw is symmetrically provided with a left-hand threaded section and a right-hand threaded section, which are respectively connected to two clamping arms for transmission. Both clamping arms are slidably connected to the clamping frame, and the rotation axes of the bidirectional lead screw and the rotary chuck are parallel to the rotation axis of the rotary frame.

[0008] Preferably, a stepper motor is fixedly mounted on the equipment frame, and a first transmission belt is drivenly connected to the output shaft of the stepper motor, the first transmission belt being drivenly connected to the rotary carrier.

[0009] Preferably, the reciprocating drive unit includes a drive motor fixedly mounted on the equipment frame, a main shaft and a reciprocating lead screw rotatably connected to the equipment frame, a second transmission belt drivingly connected to the output shaft of the drive motor, the second transmission belt drivingly connected to the main shaft, a half-tooth gear fixedly mounted on the main shaft, a reciprocating gear fixedly mounted on the reciprocating lead screw, the reciprocating gear meshing with the half-tooth gear, the reciprocating lead screw drivingly connected to the transmission slide, and a rotary torsion spring provided at the rotatable connection between the reciprocating lead screw and the equipment frame.

[0010] Preferably, the power unit includes a reverse shaft rotatably connected to the equipment frame, the main shaft being drivenly connected to a first transmission disc, and a third transmission belt being drivenly connected to the first transmission disc, the third transmission belt being drivenly connected to a second transmission disc, a fourth transmission belt being drivenly connected to another second transmission disc, the reverse shaft being drivenly connected to the fourth transmission belt, a first gear being fixedly mounted on both the reverse shaft and the other first transmission disc, the two first gears meshing with each other, a fifth transmission belt being drivenly connected between the two second transmission discs, a second gear being fixedly mounted on both brush rollers, the two second gears meshing with each other, and a sixth transmission belt being drivenly connected between one brush roller and one second transmission disc.

[0011] Preferably, a synchronization groove with an open tail end is provided on the first transmission disk, and the cross-section of the synchronization groove and the main shaft are both regular hexagonal. Rubber pads are provided on the surfaces of the first driven disk, the second driven disk, the first transmission disk, and the second transmission disk, and transmission patterns are evenly distributed on the surface of the rubber pads.

[0012] Preferably, the axis of the brush roller is parallel to the rotation axis of the rotary frame, the length of the brush roller is 1.5 times the length of the metal billet, the spiral brushes on the two brush rollers have the same spiral direction, and the spiral brush includes an inner spiral skeleton, the surface of which is evenly covered with steel wire bristles.

[0013] Preferably, the heat treatment mechanism includes a flame heater and a U-shaped bracket fixedly installed on the equipment frame. Two hydraulic lifting cylinders are fixedly installed on the U-shaped bracket. The movable ends of the two hydraulic lifting cylinders are fixedly connected to the flame heater. The axis of the hydraulic lifting cylinder is perpendicular to the rotation axis of the rotary frame.

[0014] The beneficial effects of this invention are: 1. This invention effectively solves the technical problem in existing metal heat treatment feeding devices where the four stages of feeding, surface treatment, heat treatment, and unloading are dispersed across multiple devices or integrated onto the same turntable. This results in complex power transmission paths, difficult timing control, and easy interference between moving parts, making it difficult to achieve stable, continuous, and automated operation. By setting up an intermittently rotating 90° rotary frame with four clamping frames arrayed on it, and cooperating with a transmission slide that can reciprocate along the axial direction of the rotary frame, and with the precise timing control of the transmission slide's movement by a reciprocating drive unit, the transmission slide moves away when the rotary frame rotates and moves closer when the rotary frame is stationary. This avoids spatial interference between the clamping components rotating with the frame and components such as the transmission disc and brush roller fixed on the transmission slide. Motion interference is eliminated. Simultaneously, the power unit, through the cooperation of the main shaft, reverse shaft, and multiple sets of transmission belts and gears, drives the first transmission discs of the clamping and unloading stations, the second transmission discs of the surface treatment and heat treatment stations, and the two brush rollers to rotate in a predetermined direction when the transmission slide approaches. This achieves one-time distribution and synchronous transmission of power to each station. Moreover, the two first transmission discs and the two brush rollers rotate in opposite directions, respectively adapting to the needs of clamping, releasing, and bidirectional grinding. This structural design, which links intermittent rotation, reciprocating docking, and synchronous power distribution, allows the four processes of clamping, surface treatment, heat treatment, and unloading to be completed in parallel on the same device without manual intervention or external auxiliary equipment, significantly improving the operational reliability of the device and the continuity of process connections.

[0015] 2. This invention, through a series of coordinated designs, further solves the problems of uneven processing and long production cycles caused by the independent functions of each station in the prior art. At the clamping station, when the transmission slide approaches, the first transmission disc drives the second driven disc to rotate the bidirectional lead screw. Utilizing its symmetrical left-hand and right-hand threaded sections, the two clamping arms move synchronously towards each other, achieving self-centering clamping of the metal billet and ensuring that the billet axis coincides with the rotation axis of the rotating chuck. At the unloading station, the reverse shaft and the meshing first gear cause the first transmission disc to rotate in the opposite direction, driving the bidirectional lead screw to rotate in the opposite direction, achieving synchronous unclamping and automatic unloading. At the surface treatment and heat treatment stations, when the transmission slide approaches, the second transmission disc drives the first driven disc to rotate the rotating chuck and the metal billet at a uniform speed. The two brush rollers at the surface treatment station... The rotating second gears, meshing with each other, rotate in opposite directions. The spiral brushes on the gears, with the same spiral direction, automatically discharge the debris to both ends of the billet during the grinding process, avoiding debris accumulation that affects the processing effect. At the heat treatment station, the hydraulic lifting cylinder drives the flame heater to rise and fall, heating the billet from directly below. Combined with the billet's uniform rotation, this ensures that the circumferential surface is heated evenly. The clamping, rotation, grinding, and heating actions all originate from the same main shaft power source. The reciprocating motion of the transmission slide achieves orderly docking and disengagement with the clamping components at each station. This allows the four clamping frames to simultaneously complete the clamping of one billet, the surface treatment of one billet, the heat treatment of one billet, and the unloading of one billet after each 90° intermittent rotation of the rotary frame. The four processes operate in parallel, effectively shortening the production cycle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the metal heat treatment feeding device of the present invention; Figure 2 This is a schematic diagram of the structure of the flame heater and the second gear of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 This is a schematic diagram of the structure of the transmission slide and the second transmission disc of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point A; Figure 6 This is a schematic diagram of the structure of the drive motor and the second transmission disk of the present invention; Figure 7 This is a schematic diagram of the structure of the first transmission disc and brush roller of the present invention; Figure 8 This is a schematic diagram of the clamping frame and rotating clamping plate of the present invention; Figure 9 This is an exploded structural diagram of the main shaft and the first transmission disc of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Equipment frame; 2. Metal billet; 3. Rotary swivel frame; 4. Transmission slide; 5. Stepper motor; 6. Reverse shaft; 7. Flame heater; 101. First transmission module; 102. Feed box; 103. Circular feeding belt; 104. Material trough; 105. Second transmission module; 106. Circular feeding belt; 107. Diversion box; 301. Clamping frame; 302. Bidirectional lead screw; 303. Clamping arm; 304. Rotary clamp. 305. First driven disc; 306. Second driven disc; 401. First transmission disc; 402. Second transmission disc; 403. Brush roller; 404. Spiral brush; 405. Drive motor; 406. Main shaft; 407. Reciprocating screw; 408. Half gear; 409. Reciprocating gear; 410. Rotary torsion spring; 411. Second gear; 412. First gear; 701. U-shaped bracket; 702. Hydraulic lifting cylinder. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] The present invention provides the following preferred embodiments. like Figure 1-9 As shown, the metal heat treatment feeding device includes a frame 1. Along a clockwise direction, the frame 1 is sequentially equipped with a clamping station, a surface treatment station, a heat treatment station, and a unloading station. It also includes: The loading and unloading docking mechanism is configured for automatic loading of metal billet 2 and continuous unloading of metal billet 2 after heat treatment; The loading and unloading docking mechanism includes a first transmission module 101 and a unloading box 102 fixedly mounted on the equipment frame 1. The first transmission module 101 is connected to an annular loading belt 103. The surface of the annular loading belt 103 is evenly distributed with material grooves 104 adapted to the shape of the metal billet 2. The unloading box 102 is located above the annular loading belt 103. A second transmission module 105 is fixedly mounted on the unloading box 102. The second transmission module 105 is connected to an annular unloading belt 106. A diversion box 107 is connected to the side of the unloading box 102 and the position corresponding to the unloading station. The feeding direction of the annular feeding belt 103 is perpendicular to the discharging direction of the annular discharging belt 106; The metal billet 2 is pre-placed in the material trough 104 of the annular feeding belt 103 that is adapted to the shape of the billet. The first transmission module 101 drives the annular feeding belt 103 to convey intermittently, accurately conveying the metal billet 2 to the position directly below the clamping station. After the heat treatment is completed, the metal billet 2 is released from the clamp at the unloading station and falls into the guide box 107. Guided by the guide box 107, it slides into the unloading box 102. The second transmission module 105 drives the annular unloading belt 106 to continuously transport the metal billet 2 in the unloading box 102 to the subsequent process, realizing the parallel operation of loading and unloading. The layout of the annular feeding belt 103 and the annular unloading belt 106, which are layered vertically and have perpendicular conveying directions, saves the floor space of the device and avoids spatial interference between the feeding and unloading processes. The shape of the material trough 104 is adapted to the metal billet 2, which ensures the positioning accuracy of the billet during feeding and eliminates the need for manual secondary calibration. The non-contact guidance of the high-temperature billet after heat treatment is achieved through the flow box 107, eliminating the safety hazards of manual handling of high-temperature workpieces, and realizing fully automated continuous operation of loading and unloading. The rotary carrier 3 is rotatably mounted on the equipment frame 1 and rotates intermittently 90° clockwise. A stepper motor 5 is fixedly installed on the equipment frame 1. A first transmission belt is connected to the output shaft of the stepper motor 5, and the first transmission belt is connected to the rotary frame 3. Four clamping frames 301 are arrayed on the rotary carrier 3, and the interval angle between two adjacent clamping frames 301 is 90°. Each clamping frame 301 is provided with a clamping assembly, which includes a bidirectional lead screw 302 rotatably connected to the clamping frame 301, and two clamping arms 303 with adjustable spacing are drivenly connected to the bidirectional lead screw 302. Specifically, the bidirectional lead screw 302 is symmetrically provided with a left-hand threaded section and a right-hand threaded section. The left-hand threaded section and the right-hand threaded section are respectively connected to the two clamping arms 303 for transmission. Both clamping arms 303 are slidably connected to the clamping frame 301. Each clamping arm 303 is rotatably connected to a rotary clamping plate 304. A first driven plate 305 is installed at the tail end of one rotary clamping plate 304, and a second driven plate 306 is fixedly installed at one end of the bidirectional lead screw 302. The rotation axes of the bidirectional lead screw 302 and the chuck 304 are both parallel to the rotation axis of the rotary frame 3; The stepper motor 5 drives the rotary frame 3 to complete a 90° clockwise rotation at set intervals via the first transmission belt, so that the four clamping frames 301 arranged in a 90° array pass through the clamping station, surface treatment station, heat treatment station, and unloading station in sequence. At the clamping station, the bidirectional lead screw 302 receives power to rotate through the second driven plate 306, which drives the two clamping arms 303 on the left-hand threaded section and the right-hand threaded section to move synchronously towards each other, and clamps the metal billet 2 through the rotary chuck 304. In the surface treatment station and the heat treatment station, the chuck 304 receives power to rotate through the first driven plate 305, driving the metal billet 2 to rotate synchronously and uniformly. At the unloading station, the bidirectional lead screw 302 rotates in opposite directions, driving the two clamping arms 303 to move synchronously in opposite directions, releasing the metal billet 2 to complete the unloading.

[0020] The rotary frame 3 structure with four intermittent rotations enables the synchronous parallel operation of four processes, which shortens the production cycle compared to the traditional single-station sequential operation method. The two clamping arms 303 are opened and closed synchronously by driving the positive and negative threads of the bidirectional lead screw 302, which ensures the clamping and centering of the clamping arms 303 on the metal billet 2 and avoids uneven surface treatment and heat treatment deformation caused by the eccentric clamping of the billet. The rotatable design of the chuck 304 allows the metal billet 2 to rotate at a constant speed during surface treatment and heat treatment, ensuring the comprehensiveness of surface polishing and the uniformity of heat treatment heating, and significantly improving the product processing quality. The transmission slide 4 is slidably connected to the equipment frame 1. The equipment frame 1 is provided with a reciprocating drive unit, which is configured to drive the transmission slide 4 to reciprocate along the rotation axis of the rotary frame 3. The reciprocating drive unit includes a drive motor 405 fixedly mounted on the equipment frame 1, a main shaft 406 and a reciprocating lead screw 407 rotatably connected to the equipment frame 1. A second transmission belt is driven to the output shaft of the drive motor 405, and the second transmission belt is driven to the main shaft 406. A half-tooth gear 408 is fixedly mounted on the main shaft 406, and a reciprocating gear 409 is fixedly mounted on the reciprocating lead screw 407. The reciprocating gear 409 meshes with the half-tooth gear 408. The reciprocating lead screw 407 is driven to the transmission slide 4, and a rotary torsion spring 410 is provided at the rotatable connection between the reciprocating lead screw 407 and the equipment frame 1. Specifically, during the rotation cycle of the rotary carrier 3, the transmission slide 4 moves away from the rotary carrier 3, and during the rotation interval cycle of the rotary carrier 3, the transmission slide 4 moves towards the rotary carrier 3. The drive motor 405 drives the main shaft 406 to rotate continuously via the second transmission belt. When the half-tooth gear 408 on the main shaft 406 meshes with the reciprocating gear 409, it drives the reciprocating screw 407 to rotate, thereby driving the transmission slide 4 to move away from the rotary frame 3 along the rotation axis of the rotary frame 3. When the half-tooth gear 408 disengages from the reciprocating gear 409, the rotary torsion spring 410 releases its elastic potential energy, causing the reciprocating lead screw 407 to rotate in the opposite direction, thereby driving the transmission slide 4 to move towards the rotary frame 3. Through the precise design of the number of teeth of the half-tooth gear 408, the moving away motion of the transmission slide 4 is synchronized with the 90° rotational motion of the rotary frame 3, and the moving towards motion of the transmission slide 4 is synchronized with the stationary interval of the rotary frame 3. By precisely matching the motion sequence of the transmission slide 4 and the rotary frame 3, the transmission disc and brush roller 403 components on the transmission slide 4 are completely disengaged when the frame rotates, fundamentally avoiding motion interference between components. At the same time, the components can be quickly docked when the rotary frame 3 is stationary, ensuring the continuous and smooth operation of each station and improving the reliability and stability of the device operation. The transmission slide 4 is rotatably connected to the first transmission disc 401 at the corresponding clamping station and unloading station, and to the second transmission disc 402 at the corresponding surface treatment station and heat treatment station. Two brush rollers 403 are rotatably connected at the corresponding surface treatment station, and spiral brushes 404 are fixedly mounted on the two brush rollers 403. The axis of the brush roller 403 is parallel to the rotation axis of the rotary frame 3. The length of the brush roller 403 is 1.5 times the length of the metal billet 2. The spiral brushes 404 on the two brush rollers 403 have the same spiral direction. The spiral brush 404 includes an inner spiral skeleton, and the surface of the inner spiral skeleton is evenly covered with steel wire bristles. At the surface treatment station, two brush rollers 403 rotate in opposite directions under the drive of the power unit, which drives the spiral brush 404 to rotate synchronously. The metal billet 2 rotates at a constant speed under the drive of the chuck 304, and the steel wire bristles of the spiral brush 404 make full contact with the surface of the metal billet 2 to grind and clean the oxide scale, oil stains and other impurities on the surface of the metal billet 2. Since the spiral brushes 404 on the two brush rollers 403 have the same spiral direction and the length of the brush roller 403 is 1.5 times the length of the metal billet 2, the debris generated during the grinding process will be automatically discharged to both ends of the billet along the spiral direction, so as to avoid the debris from accumulating on the surface of the billet and affecting the grinding effect. The long brush roller 403 design ensures that the entire surface of the metal billet 2 can be fully covered and polished by the spiral brush 404 during the rotation process, without any polishing dead corners; The design of two brush rollers 403 with the same spiral direction and opposite rotation enables bidirectional grinding of the metal billet 2 before heat treatment, improving the efficiency and quality of the surface treatment of the metal billet 2. The power unit is configured to drive the first transmission disc 401, the second transmission disc 402 and the brush roller 403 to rotate, and the two first transmission discs 401 and the two brush rollers 403 rotate in opposite directions. The power unit includes a reverse shaft 6 rotatably connected to the equipment frame 1, a main shaft 406 being drivenly connected to a first transmission disk 401, and a third transmission belt being drivenly connected to the first transmission disk 401. Specifically, a synchronization groove with an open tail end is provided on a first transmission disk 401, and the cross-section of the synchronization groove and the main shaft 406 are both regular hexagonal. The third transmission belt is connected to a second transmission disc 402. A fourth transmission belt is connected to another second transmission disc 402. The reverse shaft 6 is connected to the fourth transmission belt. A first gear 412 is fixedly installed on both the reverse shaft 6 and another first transmission disc 401. The two first gears 412 mesh with each other. A fifth transmission belt is connected between the two second transmission discs 402. A second gear 411 is fixedly installed on both brush rollers 403. The two second gears 411 mesh with each other. A sixth transmission belt is connected between a brush roller 403 and a second transmission disc 402.

[0021] Rubber pads are provided on the surfaces of the first driven disk 305, the second driven disk 306, the first transmission disk 401, and the second transmission disk 402, and transmission patterns are evenly distributed on the surface of the rubber pads. At the clamping station, two clamping arms 303 on the clamping unit clamp a metal billet 2 on the annular feeding belt 103. When it reaches the surface treatment station, two brush rollers 403 vibrate and grind the metal billet 2 in the clamped state. When it reaches the heat treatment station, the flame heater 7 is lifted and heat-treated from directly below the metal billet 2. During both surface treatment and heat treatment, the metal billet 2 rotates at a set speed. At the unloading station, the two rotary chucks 304 loosen their clamps, and the metal billet 2 after unloading is guided by the guide box 107 and unloaded by the annular unloading belt 106. The main shaft 406 rotates continuously, directly driving the first transmission disk 401 of the clamping station to rotate. The first transmission disk 401 drives the second transmission disk 402 of the surface treatment station to rotate via the third transmission belt. The second transmission disk 402 of the surface treatment station drives the second transmission disk 402 of the heat treatment station to rotate via the fifth transmission belt, and at the same time drives a brush roller 403 to rotate via the sixth transmission belt. The brush roller 403 drives another brush roller 403 to rotate in the opposite direction via the meshing second gear 411. The main shaft 406 simultaneously drives the reverse shaft 6 to rotate via the fourth transmission belt, and the reverse shaft 6 drives the first transmission disc 401 of the unloading station to rotate in the opposite direction via the meshing first gear 412. When the transmission slide 4 moves toward the direction of the rotary frame 3, each of the first transmission discs 401 and the second transmission discs 402 respectively presses against the second driven disc 306 and the first driven disc 305 of the corresponding workstation through rubber pads to achieve synchronous power transmission. The transmission disc and the driven disc are connected by a rubber pad with a transmission pattern, which ensures sufficient transmission friction and avoids power slippage. At the same time, it is compatible with the reciprocating motion characteristics and extrusion docking characteristics of the transmission slide 4. The heat treatment unit is fixedly installed at the heat treatment station.

[0022] The heat treatment mechanism includes a flame heater 7 and a U-shaped bracket 701 fixedly installed on the equipment frame 1. Two hydraulic lifting cylinders 702 are fixedly installed on the U-shaped bracket 701. The movable ends of the two hydraulic lifting cylinders 702 are fixedly connected to the flame heater 7. The axis of the hydraulic lifting cylinder 702 is perpendicular to the rotation axis of the rotary frame 3.

[0023] During operation, the flame heater 7 is connected to an external gas source; When the clamping frame 301 holding the metal billet 2 rotates to the heat treatment station, the two hydraulic lifting cylinders 702 extend synchronously, driving the flame heater 7 to move upward to the set distance directly below the metal billet 2. The flame heater 7 is ignited to heat and heat the uniformly rotating metal billet 2. After heat treatment, the hydraulic lifting cylinder 702 retracts synchronously, driving the flame heater 7 to reset downwards, waiting for the arrival of the next metal billet 2; The solution adopts a structure in which the hydraulic lifting cylinder 702 drives the flame heater 7 to lift and lower. It can flexibly adjust the heating distance between the flame heater 7 and the billet 2 according to the heat treatment process requirements of different specifications and materials of metal billets 2, thus ensuring precise control of the heat treatment temperature. The flame heater 7 heats the metal billet 2 from directly below, and in conjunction with the uniform rotation of the metal billet 2, the entire circumferential surface of the metal billet 2 is heated evenly, which effectively avoids uneven hardness and cracking heat treatment defects caused by local overheating or insufficient heating, and significantly improves the mechanical properties of the product. The specific steps for using this invention are as follows: In the preparation stage, the metal billet 2 to be processed should be placed in the material trough 104 of the annular feeding belt 103 and the metal billet 2 to complete the pre-positioning of the workpiece. At the same time, the flame heater 7 is connected to the external gas source. The operating status of the stepper motor 5, drive motor 405, first transmission module 101, second transmission module 105 and hydraulic lifting cylinder 702 is checked to ensure that each component is in the initial standby position. The transmission slide 4 is initially located on the side away from the rotary frame 3. The four clamping frames 301 of the rotary frame 3 correspond to the four initial positions of clamping station, surface treatment station, heat treatment station and unloading station, respectively. The hydraulic lifting cylinder 702 is in the retracted state and the flame heater 7 is in the low position. After the device is started, the first transmission module 101 drives the annular feeding belt 103 to intermittently convey the metal billet 2 precisely to the position directly below the clamping station. The drive motor 405 drives the main shaft 406 to rotate continuously through the second transmission belt. When the half-tooth gear 408 on the main shaft 406 meshes with the reciprocating gear 409, it drives the reciprocating screw 407 to rotate, driving the transmission slide 4 to move away from the rotary frame 3. When the half-tooth gear 408 disengages from the reciprocating gear 409, the rotary torsion spring 410 releases its elastic potential energy to drive the reciprocating screw 407 to rotate in the opposite direction, driving the transmission slide 4 to move closer to the rotary frame 3. Through the precise design of the number of teeth of the half-tooth gear 408, the movement of the transmission slide 4 away from the rotary frame 3 is synchronized with the 90° rotational movement of the rotary frame 3, and the movement of the slide 4 closer to the rotary frame 3 is synchronized with the stationary interval of the rotary frame 3, fundamentally avoiding motion interference between components. When the transmission slide 4 moves toward the rotary frame 3, the first transmission disk 401 of the clamping station and the second driven disk 306 of the bidirectional lead screw 302 in the corresponding clamping frame 301 are pressed together by a rubber pad with transmission texture. The main shaft 406 directly drives the first transmission disk 401 to rotate, which in turn drives the bidirectional lead screw 302 to rotate. Through its symmetrically arranged left-hand threaded section and right-hand threaded section, the two clamping arms 303 are driven to move synchronously toward each other. The metal billet 2 is clamped by the rotary clamping disk 304. After clamping, the transmission slide 4 moves away from the rotary frame 3. The stepper motor 5 drives the rotary frame 3 to rotate 90° clockwise through the first transmission belt, so that the clamping frame 301 holding the metal billet 2 rotates to the surface treatment station, and the empty clamping frame 301 rotates to the clamping station. The transmission slide 4 approaches the rotary frame 3 again, and the second transmission disk 402 of the surface treatment station presses against the first driven disk 305 at the tail end of the corresponding rotary chuck 304. The main shaft 406 drives the second transmission disk 402 to rotate through the third transmission belt, thereby driving the rotary chuck 304 and the metal billet 2 to rotate at a constant speed. At the same time, the second transmission disk 402 drives a brush roller 403 to rotate through the sixth transmission belt. The two brush rollers 403 rotate in opposite directions through the meshing second gear 411. The two spiral brushes 404 with the same spiral direction polish the surface of the rotating metal billet 2 without dead angles. The debris generated by polishing is automatically discharged to both ends of the metal billet 2 along the spiral direction. At the same time, the clamping station repeats the above clamping action. After the surface treatment is completed, the transmission slide 4 moves away, and the rotary frame 3 rotates 90° again, so that the treated metal billet 2 is rotated to the heat treatment station and the metal billet 2 in the clamping station is rotated to the surface treatment station. After the transmission slide 4 approaches, the second transmission plate 402 of the heat treatment station drives the corresponding rotary clamping plate 304 to drive the metal billet 2 to continue to rotate at a constant speed. The two hydraulic lifting cylinders 702 extend synchronously, lift the flame heater 7 to a set distance directly below the metal billet 2 and ignite it for heating. The flame heats the rotating metal billet 2 uniformly from below. At the same time, the surface treatment station and the clamping station perform the corresponding processes simultaneously. After heat treatment, the hydraulic lifting cylinder 702 retracts, causing the flame heater 7 to reset, and the transmission slide 4 moves away. The rotary carrier 3 rotates 90° again, so that the heat-treated metal billet 2 is rotated to the unloading station. When the transmission slide 4 approaches, the first transmission disk 401 of the unloading station presses against the second driven disk 306 of the corresponding bidirectional lead screw 302. The main shaft 406 drives the reverse shaft 6 to rotate through the fourth transmission belt. The reverse shaft 6 drives the first transmission disk 401 to rotate in the opposite direction through the meshing first gear 412, which in turn drives the bidirectional lead screw 302 to rotate in the opposite direction, so that the two clamping arms 303 move synchronously in opposite directions to release the metal billet 2. The metal billet 2 falls into the diversion box 107 and is guided to slide into the unloading box 102. The second transmission module 105 drives the annular unloading belt 106 to continuously transport the metal billet 2 in the unloading box 102 to the subsequent process. After that, each time the rotary slewing frame 3 completes a 90° intermittent rotation, the four workstations simultaneously complete a cycle of clamping, surface treatment, heat treatment, and unloading, realizing fully automated continuous production of heat treatment for metal billets 2.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A metal heat treatment feeding device, comprising a device frame, a clamping station, a surface treatment station, a heat treatment station and a discharging station are sequentially arranged on the device frame in a clockwise direction, characterized in that, Also includes: The loading and unloading docking mechanism is configured for automatic loading of metal billets and continuous unloading of metal billets after heat treatment. A rotary swivel is rotatably mounted on the equipment frame and rotates 90° clockwise intermittently. Four clamping frames are arrayed on the rotary swivel, and each clamping frame is equipped with a clamping assembly. The clamping assembly includes a bidirectional lead screw rotatably connected to the clamping frame. Two clamping arms with adjustable spacing are drivenly connected to the bidirectional lead screw. A rotary clamping plate is rotatably connected to each clamping arm. A first driven plate is installed at the tail end of one of the rotary clamping plates, and a second driven plate is fixedly installed at one end of the bidirectional lead screw. The transmission slide is slidably connected to the equipment frame. The equipment frame is equipped with a reciprocating drive unit, which is configured to drive the transmission slide to reciprocate along the rotation axis of the rotary frame. The transmission slide is rotatably connected to a first transmission disc at the corresponding clamping station and unloading station, and to a second transmission disc at the corresponding surface treatment station and heat treatment station. Two brush rollers are rotatably connected at the corresponding surface treatment station, and spiral brushes are fixedly mounted on the two brush rollers. The power unit is configured to drive the first transmission disc, the second transmission disc, and the brush roller to rotate, and the two first transmission discs and the two brush rollers rotate in opposite directions; The heat treatment unit is fixedly installed at the heat treatment station.

2. The metal heat treatment feeding device according to claim 1, characterized in that, The loading and unloading docking mechanism includes a first transmission module and a unloading box fixedly mounted on the equipment frame. The first transmission module is driven by an annular loading belt, and the surface of the annular loading belt is evenly distributed with material grooves. The unloading box is located above the annular loading belt. A second transmission module is fixedly mounted on the unloading box, and the second transmission module is driven by an annular unloading belt. A diversion box is connected to the side of the unloading box at the position corresponding to the unloading station.

3. The metal heat treatment feeding device according to claim 1, characterized in that, The bidirectional lead screw is symmetrically provided with a left-hand threaded section and a right-hand threaded section. The left-hand threaded section and the right-hand threaded section are respectively connected to two clamping arms. Both clamping arms are slidably connected to the clamping frame. The rotation axes of the bidirectional lead screw and the rotary chuck are parallel to the rotation axis of the rotary frame.

4. The metal heat treatment feeding device according to claim 1, characterized in that, A stepper motor is fixedly mounted on the equipment frame, and a first transmission belt is driven to the output shaft of the stepper motor. The first transmission belt is driven to the rotary carrier.

5. The metal heat treatment feeding device according to claim 1, characterized in that, The reciprocating drive unit includes a drive motor fixedly mounted on the equipment frame, a main shaft and a reciprocating lead screw rotatably connected to the equipment frame, a second transmission belt drivingly connected to the output shaft of the drive motor, the second transmission belt drivingly connected to the main shaft, a half-tooth gear fixedly mounted on the main shaft, a reciprocating gear fixedly mounted on the reciprocating lead screw, the reciprocating gear meshing with the half-tooth gear, the reciprocating lead screw drivingly connected to the transmission slide, and a rotary torsion spring provided at the rotatable connection between the reciprocating lead screw and the equipment frame.

6. The metal heat treatment feeding device according to claim 5, characterized in that, The power unit includes a reverse shaft rotatably connected to the equipment frame. The main shaft is driven by a first transmission disc, and a third transmission belt is driven by the first transmission disc. The third transmission belt is driven by a second transmission disc, and a fourth transmission belt is driven by the other second transmission disc. The reverse shaft is driven by the fourth transmission belt. A first gear is fixedly installed on both the reverse shaft and the other first transmission disc. The two first gears mesh with each other. A fifth transmission belt is driven by the two second transmission discs. A second gear is fixedly installed on both brush rollers. The two second gears mesh with each other. A sixth transmission belt is driven by the brush roller and a second transmission disc.

7. The metal heat treatment feeding device according to claim 6, characterized in that, The first transmission disc has a timing groove with an open end. The timing groove and the main shaft have a regular hexagonal cross-section. The surfaces of the first driven disc, the second driven disc, the first transmission disc, and the second transmission disc are all provided with rubber pads. The surfaces of the rubber pads are evenly distributed with transmission patterns.

8. The metal heat treatment feeding device according to claim 1, characterized in that, The axis of the brush roller is parallel to the rotation axis of the rotary frame. The length of the brush roller is 1.5 times the length of the metal billet. The spiral brushes on the two brush rollers have the same spiral direction. The spiral brush includes an inner spiral skeleton, and the surface of the inner spiral skeleton is evenly distributed with steel wire bristles.

9. The metal heat treatment feeding device according to claim 1, characterized in that, The heat treatment mechanism includes a flame heater and a U-shaped bracket fixedly installed on the equipment frame. Two hydraulic lifting cylinders are fixedly installed on the U-shaped bracket. The movable ends of the two hydraulic lifting cylinders are fixedly connected to the flame heater. The axis of the hydraulic lifting cylinder is perpendicular to the rotation axis of the rotary frame.

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