A stainless steel bar heat treatment device

Abstract

The present invention relates to the technical field of heat treatment of stainless steel bars, and in particular to an efficient and energy-saving heat treatment device for stainless steel bars, which effectively solves the problems of being unable to perform rapid heat treatment on a single bar and being inconvenient to clamp and position the bar; the device comprises a heating chamber, a solid solution heating component is provided in the heating chamber, through holes are respectively provided on the left and right sides of a heat insulation plate, a heat insulation plate is fixedly connected to the left end of the heating chamber, a plurality of positioning rods uniformly distributed along the circumferential direction of the through hole are slidably connected to the left side of the heat insulation plate, and a rotating ball is hinged at one end of the positioning rod; the present invention can perform solid solution heating on the stainless steel bar entering the heating chamber by arranging a heating chamber and a solid solution heating component, reduce its internal stress, and facilitate secondary drawing; the positioning rod, the rotating ball, the clamping component, the bracket, the conveying roller and the moving component and the driving component are arranged, and the clamping component can be used to drive the positioning rod to move closer to or away from the center of the through hole, thereby centering the bar and clamping it at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment of stainless steel bars, and in particular to a heat treatment device for stainless steel bars. Background Art

[0002] Heat treatment refers to the modification of metal structure by heating, holding and cooling to obtain the desired properties. Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing technologies, heat treatment generally does not change the shape or overall chemical composition of the workpiece. Instead, it imparts or improves the performance of the workpiece by changing the internal microstructure of the workpiece or the chemical composition of the workpiece surface. Its characteristic is to improve the intrinsic quality of the workpiece, which is generally not visible to the naked eye. In order to make the metal workpiece have the required mechanical properties, physical properties and chemical properties, in addition to the reasonable selection of materials and various forming processes, heat treatment processes are often indispensable. In the drawing process of stainless steel hexagonal and special-shaped bars, due to the high strength of stainless steel, large internal stress and the easy cracking of the bars, the stainless steel bars need to be heat treated and then drawn in steps. However, most existing heat treatment devices are batch processing and cannot perform single treatment on the bars. Batch processing is not convenient for step-by-step drawing of stainless steel bars. At the same time, it is not convenient to clamp and position the stainless steel bars during the heat treatment process, which urgently needs to be solved. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a stainless steel bar heat treatment device, which effectively solves the problems of being unable to quickly heat treat a single bar and being inconvenient to clamp and position the bar.

[0004] The technical solution is as follows: the present invention includes a heating bin, a solid solution heating component is provided in the heating bin, through holes are respectively provided on the left and right sides of the heat insulation plate, a heat insulation plate is fixedly connected to the left end of the heating bin, a plurality of positioning rods uniformly distributed along the circumferential direction of the through hole are slidably connected to the left side of the heat insulation plate, a rotating ball is hinged at one end of the positioning rod, a clamping component is provided on the left side of the heating bin, the clamping component can drive the plurality of positioning rods to move synchronously toward the center of the through hole, a bracket is fixedly connected to the left side of the heating bin, a movable rack is slidably connected to the upper and lower sides of the bracket, and conveying rollers are rotatably connected to the left and right sides of the movable rack, and the plurality of conveying rollers can rotate synchronously, a movable component is provided at the front end of the bracket, the movable component can drive the two movable racks to move relative to or oppositely, a driving component is provided at the rear end of the bracket, the driving component can drive the conveying roller to rotate, a closing component is provided in the through hole on the left side of the heating bin, the closing component can block the through hole, and a loading component is provided on the left side of the heating bin.

[0005] The solid solution heating assembly includes a heater, the output end of the heater is fixedly connected to a spring-shaped heating tube, a plurality of heating cylinders evenly distributed along its circumferential direction are fixedly connected in the heating chamber, the inner wall of the heating cylinder contacts the outer wall of the heating tube, and the heating cylinder is coaxial with the through hole.

[0006] The clamping assembly includes a U-shaped lifting frame, which is fixedly connected to the heat insulation plate, and the middle part of the lifting frame is fixedly connected to the upper end of the upper positioning rod. The lower left end of the heat insulation plate is slidably connected to two front-to-back symmetrical movable plates, and movable grooves are provided on the movable plates. The front and rear sides of the lifting frame are respectively fixedly connected with movable pins located in the movable grooves. The movable plate is provided with a movable groove, and the two positioning rods on the lower side are respectively fixedly connected with movable pins located in the movable grooves on their corresponding sides.

[0007] The upper end of the heat insulation board is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to a push rod, and the lower end of the push rod is fixedly connected to the upper end of the lifting frame.

[0008] The moving assembly includes a connecting plate, which is slidably connected to the front end of the bracket. The left end of the connecting plate is hinged with two connecting rods facing each other up and down. The other end of the connecting rod is hinged to the moving frame on its corresponding side. The front side of the left end of the lifting frame is fixedly connected with a connecting frame, and a connecting groove is provided on the connecting frame. The right side of the front end of the connecting plate is fixedly connected with a connecting pin located in the connecting groove.

[0009] The driving assembly includes a driving motor, which is fixedly connected to the rear end of the bracket, and the output end of the driving motor is fixedly connected to a transmission rod, and the upper and lower sides of the transmission rod are respectively slidably connected to a hexagonal prism, and the other end of the hexagonal prism is coaxially fixedly connected to a bevel gear that is rotatably connected to the moving frame on the corresponding side. The rear ends of the two conveying rollers on the right side are respectively fixedly connected to helical gears that can mesh with the bevel gears on the corresponding sides, and the left and right conveying rollers are connected via a belt drive.

[0010] The closing assembly includes a plurality of closing plates evenly distributed along the direction of the through hole, an equilateral slide groove is provided at the left end of the heating chamber, a sliding pin is fixedly connected to the rear end of the closing plate and is located in the slide groove on its corresponding side, a turntable is rotatably connected to the right side of the heat insulation plate, and a closing groove corresponding to the closing plate is provided on the turntable, and a closing pin is fixedly connected to the left end of the closing plate and is located in the closing groove on its corresponding side.

[0011] The present invention can perform solid solution heating on the stainless steel bars entering the heating bin by arranging a heating bin and a solid solution heating component, thereby reducing the internal stress thereof and facilitating secondary drawing. The positioning rod, rotating ball, clamping component, bracket, conveying roller, moving component and driving component are arranged, and the clamping component can be used to drive the positioning rod toward or away from the center of the through hole, thereby centering the bar and clamping it at the same time, thereby preventing the bar from being skewed during transportation, resulting in uneven heating or contact with the heating tube, thereby causing damage to the heating tube.

[0012] The present invention is provided with a closing component that can close the through hole while adapting to rods of different diameters, thereby reducing heat loss inside the heating chamber, while the rods can pass through normally. The provision of a loading component can load the heating chamber in a timely manner, thereby achieving the purpose of automated operation, replacing manual operation to avoid its limitations, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an axonometric drawing of the present invention.

[0014] Figure 2 It is a schematic diagram of the hydraulic cylinder in the present invention.

[0015] Figure 3 It is a schematic diagram of the heater in the present invention.

[0016] Figure 4 It is a schematic diagram of the turntable in the present invention.

[0017] Figure 5 Schematic diagram of the heat insulation board of the present invention.

[0018] Figure 6 It is a partially cutaway first structural schematic diagram of the heating chamber in the present invention.

[0019] Figure 7 This is a partially cutaway second structural diagram of the heating chamber of the present invention.

[0020] Figure 8 It is a schematic diagram of the conveying plate in the present invention.

[0021] Figure 9 It is a partial cutaway schematic diagram of the feeding assembly in the present invention.

[0022] Figure 10 This invention Figure 1 Enlarged view of point A in the middle.

[0023] Figure 11 This invention Figure 3 Enlarged view of point B in the middle.

[0024] In the figure: 1, heating chamber; 2, through hole; 3, heat insulation board; 4, positioning rod; 5, rotating ball; 6, bracket; 7, movable frame; 8, conveyor roller; 9, heater; 10, heating tube; 11, heating cylinder; 12, lifting frame; 13, movable plate; 14, movable groove; 15, movable pin; 16, movable groove; 17, movable pin; 18, hydraulic cylinder; 19, push rod; 20, connecting plate; 21, connecting rod; 22, connecting frame; 23, connecting groove; 24, connecting pin; 25, driving motor; 26, transmission rod; 27, hexagonal prism; 2 8. Bevel gear; 29. ​​Helical gear; 30. Belt; 31. Closing plate; 32. Slide; 33. Sliding pin; 34. Turntable; 35. Closing slot; 36. Closing pin; 37. Toggle lever; 38. Arc slot; 39. Toggle pin; 40. Bin; 41. Blocking plate; 42. Hydraulic lever; 43. Lifting plate; 44. Loading rack; 45. Fixed rack; 46. Rotating motor; 47. Screw; 48. Push plate; 49. Rotating motor; 50. Screw; 51. Lifting seat; 52. Conveyor plate; 53. Inclined slot; 54. Latch. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figures 1 to 11 It is given, including a heating bin 1, a solid solution heating component is provided in the heating bin 1, and through holes 2 are respectively opened on the left and right sides of the insulation board 3. The left end of the heating bin 1 is fixedly connected to the insulation board 3, and the left side of the insulation board 3 is slidingly connected to multiple positioning rods 4 evenly distributed along the circumferential direction of the through hole 2. One end of the positioning rod 4 is hinged with a rotating ball 5. A clamping assembly is provided on the left side of the heating bin 1, and the clamping assembly can drive multiple positioning rods 4 to move synchronously toward the center of the through hole 2. A bracket 6 is fixedly connected to the left side of the heating bin 1, and a moving frame 7 is slidingly connected to the upper and lower sides of the bracket 6. The moving frame 7 is rotatably connected to the conveying rollers 8 on the left and right sides, and multiple conveying rollers 8 can rotate synchronously. A moving assembly is provided at the front end of the bracket 6, and the moving assembly can drive the two moving frames 7 to move relative to or back to each other. A driving assembly is provided at the rear end of the bracket 6, and the driving assembly can drive the conveying rollers 8 to rotate. A closing assembly is provided on the left side of the heating bin 1, and the closing assembly can block the through hole 2. A loading assembly is provided on the left side of the heating bin 1.

[0027] like Figures 1 to 11As shown, the setting of a heating bin 1 and a solution heating component can perform solution heating on the stainless steel bar entering the heating bin 1, reduce its internal stress, and facilitate secondary drawing. The length of the heating bin 1 can be changed according to specific needs to ensure that the bar can pass through the heating bin 1 normally. A through hole 2 is provided to facilitate the passage of the bar. A heat insulation plate 3 is provided to prevent the internal heat of the heating bin 1 from overflowing and causing damage to the left structure. A positioning rod 4, a rotating ball 5, a clamping component, a bracket 6, a conveying roller 8 and a moving component and a driving component are provided. The clamping component can be used to drive the positioning rod 4 to move closer to or away from the center of the through hole 2, thereby centering the bar and clamping it at the same time, to prevent the bar from being skewed during transportation, resulting in uneven heating or contact with the heating tube 10, causing damage to the heating tube 10. At the same time, the conveying roller 8 can be used to convey the bar. It can pass through the heating bin 1 normally, and the moving component can adjust the distance between the conveying rollers 8 on the upper and lower sides, so that the conveying rollers 8 can adapt to and convey rods of different diameters, thereby expanding the scope of application of the device. At the same time, the driving component can drive the conveying rollers 8 on the upper and lower sides to rotate synchronously to convey the rods. The closing component is set to close the through hole 2 while adapting to rods of different diameters, which can reduce the heat loss inside the heating bin 1. At the same time, the rods can pass normally. The loading component is set to load the heating bin 1 in time, thereby achieving the purpose of automatic operation, replacing manual operation to avoid its limitations and improving the practicality of the device. A cooling bin is provided on the right side of the heating bin 1. A cooling device and a cleaning device can be set in the cooling bin to cool the rods while cleaning their specific surface, which is convenient for subsequent drawing.

[0028] The solid solution heating assembly includes a heater 9, the output end of the heater 9 is fixedly connected to a spring-shaped heating tube 10, and the heating chamber 1 is fixedly connected to a plurality of heating tubes 11 evenly distributed along its circumferential direction. The inner wall of the heating tube 11 contacts the outer wall of the heating tube 10, and the heating tube 11 is coaxial with the through hole 2.

[0029] like Figure 3 As shown, the heater 9, the heating tube 10 and the heating cylinder 11 are provided. The heater 9 can be used to heat the heating tube 10, so that the temperature in the heating chamber 1 reaches the solid solution heating temperature and is maintained, ensuring that the rod can be heated to the specified temperature. The heating cylinder 11 is provided to facilitate temperature concentration, avoid random temperature diffusion, and improve the heating effect.

[0030] The clamping assembly includes a U-shaped lifting frame 12, which is fixedly connected to the heat insulation board 3. The middle part of the lifting frame 12 is fixedly connected to the upper end of the positioning rod 4 on the upper side. Two front-to-back symmetrical movable plates 13 are slidably connected to the lower left end of the heat insulation board 3. A movable groove 14 is provided on the movable plate 13. The front and rear sides of the lifting frame 12 are respectively fixedly connected to movable pins 15 located in the movable groove 14. A movable groove 16 is provided on the movable plate 13. The two positioning rods 4 on the lower side are respectively fixedly connected to movable pins 17 located in the movable groove 16 on their corresponding sides.

[0031] like Figures 2 to 10 As shown, the lifting frame 12, the movable plate 13, the movable groove 14, the movable pin 15, the movable groove 16 and the movable pin 17 are set up, which can utilize the lifting and lowering to drive the front and rear movable plates 13 to move relative to or away from each other through the action of the movable pin 15 and the movable groove 14, and then drive the positioning rods 4 on the corresponding sides to move through the movable groove 16 and the movable pin 17, so that the three positioning rods 4 can move synchronously to achieve the purpose of center positioning.

[0032] The upper end of the heat insulation board 3 is fixedly connected to a hydraulic cylinder 18 , the output end of the hydraulic cylinder 18 is fixedly connected to a push rod 19 , and the lower end of the push rod 19 is fixedly connected to the upper end of the lifting frame 12 .

[0033] like Figure 5 As shown, the hydraulic cylinder 18 and the push rod 19 are provided so that the hydraulic cylinder 18 can be used to drive the lifting frame 12 to move up and down through the push rod 19, thereby providing power for the clamping assembly, the closing assembly and the moving assembly.

[0034] The moving assembly includes a connecting plate 20, which is slidably connected to the front end of the bracket 6. The left end of the connecting plate 20 is hinged with two connecting rods 21 facing each other up and down. The other end of the connecting rod 21 is hinged to the moving frame 7 on its corresponding side. The front side of the left end of the lifting frame 12 is fixedly connected to a connecting frame 22, and a connecting groove 23 is provided on the connecting frame 22. The right side of the front end of the connecting plate 20 is fixedly connected to a connecting pin 24 located in the connecting groove 23.

[0035] like Figure 10 As shown, the connection plate 20, the connecting rod 21, the connection frame 22, the connection groove 23 and the connection pin 24 can be set to make use of the lifting of the lifting frame 12 to drive the connection plate 20 to move through the connection frame 22, and then the upper and lower moving frames 7 can be driven to move relative to or opposite to each other through the connecting rod 21, so as to achieve the purpose of changing the distance between the upper and lower conveying rollers 8 according to the diameter of the rod.

[0036] The driving assembly includes a driving motor 25, which is fixedly connected to the rear end of the bracket 6. The output end of the driving motor 25 is fixedly connected to a transmission rod 26. The upper and lower sides of the transmission rod 26 are respectively slidably connected to a hexagonal prism 27. The other end of the hexagonal prism 27 is coaxially fixedly connected to a bevel gear 28. The bevel gear 28 is rotatably connected to the movable frame 7 on the corresponding side. The rear ends of the two conveying rollers 8 on the right side are respectively fixedly connected to helical gears 29 that can mesh with the bevel gears 28 on the corresponding side. The left and right conveying rollers 8 are connected via a belt 30.

[0037] like Figure 2 As shown, the drive motor 25, transmission rod 26, hexagonal prism 27, bevel gear 28, helical gear 29 and belt 30 are arranged so that the drive motor 25 can be used to provide power for the conveying roller 8, thereby realizing the conveying of the rods. The arrangement of the transmission rod 26 and the hexagonal prism 27 can ensure that when the spacing between the conveying pipes on the upper and lower sides is changed, the drive motor 25 can still drive the conveying roller 8 to rotate normally, and the belt 30 can drive the two conveying rollers 8 on the same movable frame 7 to rotate synchronously. Two conveying rollers 8 are arranged on the left and right sides of a movable frame 7 to ensure that the rods remain in a horizontal state during transportation to avoid the problem of warping due to gravity.

[0038] The closing assembly includes a plurality of closing plates 31 evenly distributed along the direction of the through hole 2. An equilateral slide groove 32 is provided at the left end of the heating chamber 1. The rear end of the closing plate 31 is fixedly connected to a sliding pin 33 located in the slide groove 32 on its corresponding side. A turntable 34 is rotatably connected to the right side of the insulation plate 3. The turntable 34 is provided with closing grooves 35 corresponding to the closing plates 31 one by one. The left end of the closing plate 31 is fixedly connected to a closing pin 36 located in the closing groove 35 on its corresponding side.

[0039] like Figures 2 to 7 As shown, the closing plate 31, the slide groove 32, the sliding pin 33, the turntable 34, the closing groove 35 and the closing pin 36 can be arranged to utilize the rotation of the turntable 34 to drive multiple closing plates 31 to move synchronously, thereby blocking or opening the through hole 2, and the size of the open hole can be adjusted according to the thickness of the rod, thereby ensuring that the through hole 2 is blocked to the greatest extent while the rod passes through, thereby preventing heat leakage.

[0040] An L-shaped lever 37 is slidably connected to the front side of the lifting frame 12, an arc groove 38 is opened at the left end of the heat insulation board 3, and a toggle pin 39 located in the arc groove 38 is fixedly connected to the left end of the turntable 34. The left side of the toggle pin 39 is hinged to the rear side of the lever 37.

[0041] like Figures 4 and 5 As shown, the setting of the shifting rod 37, the arc-shaped slot 38 and the shifting pin 39 can utilize the lifting and lowering of the lifting frame 12 to drive the turntable 34 to move up and down through the action of the shifting rod 37 and the arc-shaped slot 38, thereby realizing the driving of the closing component.

[0042] The feeding assembly includes a hopper 40, the upper end of which is fixedly connected to a blocking plate 41, the front end of the hopper 40 is fixedly connected to a hydraulic rod 42, the output end of the hydraulic rod 42 is fixedly connected to a lifting plate 43, the upper end surface of the lifting plate 43 is an inclined surface with a front lower back upper direction, the front end of the hopper 40 is fixedly connected to a feeding rack 44, the left end of the feeding rack 44 is fixedly connected to a fixing rack 45, a rotating motor 46 is fixedly connected inside the fixing rack 45, the output end of the rotating motor 46 is fixedly connected to a lead screw 47, the outer wall of the lead screw 47 is threadedly connected to a push plate 48, and the push plate 48 is slidingly connected to the feeding rack 44, a rotating motor 49 is provided on the rear side of the hopper 40, the output end of the rotating motor 49 is fixedly connected to a lead screw 50, the outer wall of the lead screw 50 is threadedly connected to a lifting seat 51, the lifting seat 51 is slidingly connected to the inner wall of the hopper 40, and the upper end surface of the lifting seat 51 is an inclined surface with a front lower back upper direction.

[0043] like Figure 1 and Figure 9 As shown, the material bin 40, hydraulic rod 42, lifting plate 43, loading rack 44 and push plate 48 are set. The hydraulic rod 42 can be used to drive the lifting plate 43 to rise and fall, and then a single bar is transported to the loading rack 44 at a time, and then the push rod 19 is used to push the bar to the conveying roller 8, and then the conveying roller 8 can be used to convey it. The rotary motor 46 and the screw 47 are set to provide power for the movement of the push plate 48, that is, to push and load the bar and reset the push plate 48 for the next use. The rotating motor 49, the screw 50 and the lifting seat 51 are set to facilitate the gradual upward transportation of the bar at the bottom of the material bin 40, to ensure normal loading, and to store a large amount of material at one time. The length of the loading assembly can be made according to the specific length of the bar. The barrier plate 41 is set to avoid the problem that the bar is not able to be fed individually due to accumulation of a large amount of gravity on the lifting plate 43.

[0044] A conveying plate 52 is slidably connected in the heating chamber 1 , and an inclined groove 53 is provided at the front end of the conveying plate 52 . The right end of the lower sliding pin 3333 is fixedly connected to a latch 54 located in the inclined groove 53 .

[0045] like Figure 3 and Figure 8 As shown, the conveying plate 52, the inclined groove 53 and the latch 54 are provided to adjust the height of the conveying plate 52 according to the diameter of the rod, thereby ensuring the transportation of the rod and avoiding the difference that prevents the rod from passing through the heating chamber 1 normally. A high-temperature conveying device can also be provided in the heating chamber 1 according to demand to convey the rod.

[0046] When the present invention is in use, the heater 9 is started, and the heater 9 heats the heating chamber 1 through the heating pipe 10. When the temperature in the heating chamber 1 is increased to a specified stable temperature, the heat treatment of the bar can be carried out;

[0047] The lifting plate 43 is started and used to lift the bar from the silo 40 to the loading rack 44. Under the action of gravity, the bar rolls to the center of the loading rack 44. Then the rotating motor 46 is started, which drives the bar to move between the two moving racks 7. Then the hydraulic cylinder 18 is started and drives the lifting rack 12 to a suitable position via the push rod 19. The conveyor roller 8 stops when it contacts the surface of the bar. At this time, the rotating ball 5 driven by the clamping assembly contacts the surface of the bar, completing the center positioning clamping.

[0048] At the same time, the lifting frame 12 drives the turntable 34 to rotate via the lever 37, and the turntable 34 drives the closing plates 31 via the closing pin 36 and the closing slot 35 to gradually block the through hole 2 until the hole between the closing plates 31 is only able to pass the rod;

[0049] In the process of closing the multiple closing plates 31, the lower closing plate 31 drives the conveying plate 52 to move to a suitable height through the action of the latch 54 and the inclined groove 53, and then stops, ensuring that the bars can be transported normally;

[0050] After the bar is clamped and fixed, the drive motor 25 is started, and the drive motor 25 drives the transmission rod 26 to rotate. The transmission rod 26 drives the conveying roller 8 to rotate through the action of the hexagonal prism 27, the bevel gear 28 and the bevel gear 29, so that the bar can be conveyed. The bar enters the heating bin 1 and is supported by the conveying plate 52. It is then heat-treated by the heating tube 10. After the heat treatment is completed, the bar is cooled in the cooling bin. After the cooling of the cooling bin is completed, drawing can be carried out. After the initial drawing is completed, the bar can be placed in the hopper 40 and wait for the secondary heat treatment before drawing. This process is repeated until all the drawing work is completed.

[0051] In the present invention, the motor and the hydraulic device are both prior art and will not be described in detail here.

[0052] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A stainless steel bar heat treatment device, comprising a heating chamber (1), characterized in that: A solid solution heating component is provided in the heating chamber (1), and through holes (2) are respectively provided on the left and right sides of the heat insulation plate (3). The left end of the heating chamber (1) is fixedly connected to the heat insulation plate (3), and the left side of the heat insulation plate (3) is slidably connected to a plurality of positioning rods (4) uniformly distributed along the circumferential direction of the through hole (2). A rotating ball (5) is hinged at one end of the positioning rod (4). A clamping component is provided on the left side of the heating chamber (1), and the clamping component can drive the plurality of positioning rods (4) to move synchronously toward the center of the through hole (2); A closing component located in the through hole (2) is provided on the left side of the heating chamber (1); The clamping assembly includes a U-shaped lifting frame (12), the lifting frame (12) is fixedly connected to the heat insulation plate (3), the middle portion of the lifting frame (12) is fixedly connected to the upper end of the positioning rod (4) on the upper side, and two front-to-back symmetrical moving plates (13) are slidably connected to the lower left end of the heat insulation plate (3); A movable groove (14) is provided on the movable plate (13), and movable pins (15) located in the movable groove (14) are fixedly connected to the front and rear sides of the lifting frame (12). A movable groove (16) is provided on the movable plate (13), and two positioning rods (4) on the lower side are fixedly connected to movable pins (17) located in the movable groove (16) on their corresponding sides. The upper end of the heat insulation plate (3) is fixedly connected to a hydraulic cylinder (18), the output end of the hydraulic cylinder (18) is fixedly connected to a push rod (19), and the lower end of the push rod (19) is fixedly connected to the upper end of the lifting frame (12); The closing assembly comprises a plurality of closing plates (31) uniformly distributed along the direction of the through hole (2); an equilateral sliding groove (32) is provided at the left end of the heating chamber (1); a sliding pin (33) located in the sliding groove (32) on the corresponding side of the closing plate (31) is fixedly connected to the rear end of the closing plate (31); a turntable (34) is rotatably connected to the right side of the heat insulation plate (3); a closing groove (35) corresponding to each of the closing plates (31) is provided on the turntable (34); and a closing pin (36) located in the closing groove (35) on the corresponding side of the closing plate (31) is fixedly connected to the left end of the closing plate (31); The front side of the lifting frame (12) is slidably connected to an L-shaped lever (37), the left end of the heat insulation plate (3) is provided with an arc-shaped groove (38), the left end of the turntable (34) is fixedly connected to a toggle pin (39) located in the arc-shaped groove (38), and the left side of the toggle pin (39) is hinged to the rear side of the lever (37).

2. The stainless steel bar heat treatment device according to claim 1, characterized in that: The left side of the heating chamber (1) is fixedly connected to a bracket (6), the upper and lower sides of the bracket (6) are respectively slidably connected to a movable bracket (7), and the left and right sides of the movable bracket (7) are respectively rotatably connected to conveying rollers (8), and the plurality of conveying rollers (8) can rotate synchronously.

3. The stainless steel bar heat treatment device according to claim 1, characterized in that: The front end of the bracket (6) is provided with a moving assembly, which can drive the two moving frames (7) to move relative to or opposite to each other. The rear end of the bracket (6) is provided with a driving assembly, which can drive the conveying roller (8) to rotate. The closing assembly can block the through hole (2). A loading assembly is provided on the left side of the heating chamber (1).

4. The stainless steel bar heat treatment device according to claim 3, characterized in that: The solid solution heating assembly comprises a heater (9), the output end of the heater (9) is fixedly connected to a spring-shaped heating tube (10), a plurality of heating tubes (11) uniformly distributed along the circumference of the heating chamber (1) are fixedly connected inside the heating chamber (1), the inner wall of the heating tube (11) contacts the outer wall of the heating tube (10), and the heating tube (11) is coaxial with the through hole (2).

5. The stainless steel bar heat treatment device according to claim 4, characterized in that: The moving assembly includes a connecting plate (20), the connecting plate (20) is slidably connected to the front end of the bracket (6), the left end of the connecting plate (20) is hinged to two upper and lower opposing connecting rods (21), the other end of the connecting rod (21) is hinged to the moving frame (7) on its corresponding side, the front side of the left end of the lifting frame (12) is fixedly connected to a connecting frame (22), a connecting groove (23) is provided on the connecting frame (22), and a connecting pin (24) located in the connecting groove (23) is fixedly connected to the right side of the front end of the connecting plate (20).

6. The stainless steel bar heat treatment device according to claim 5, characterized in that: The driving assembly includes a driving motor (25), the driving motor (25) is fixedly connected to the rear end of the bracket (6), the output end of the driving motor (25) is fixedly connected to a transmission rod (26), the upper and lower sides of the transmission rod (26) are respectively slidably connected to a hexagonal prism (27), the other end of the hexagonal prism (27) is coaxially fixedly connected to a bevel gear (28), the bevel gear (28) is rotationally connected to the movable frame (7) on the corresponding side, the rear ends of the two conveying rollers (8) on the right side are respectively fixedly connected to a helical gear (29) that can mesh with the bevel gear (28) on the corresponding side, and the left and right conveying rollers (8) are connected through a belt (30).

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