A quenching device for bolts

Abstract

The application discloses a quenching device for bolts, which comprises a quenching box, a high-frequency heater arranged above the quenching box, a rotating frame installed in the quenching box, a plurality of rotating shafts installed at the upper end of the rotating frame, a rotating sleeve rotatably installed on the rotating shaft, a driving frame installed in the quenching box, a plurality of rotating tables installed on the outer side of the rotating sleeve, permanent magnets installed on the upper and lower ends of the rotating tables, heat insulation sheets installed at one end of the permanent magnets, intercepting plates installed on the lower end of the quenching box, a plurality of vertical material guiding channels arranged above the quenching box, a material guiding frame installed on the upper end of the quenching box, an inclined material guiding net installed on one side of the lower end of the quenching box and a cooling box installed on the ground on one side of the quenching box. The application has the beneficial effect that different bolts can be heated and quenched at the same time, and the bolts can be automatically fed and discharged, thereby improving the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of bolt processing equipment technology, and more specifically, to a quenching device for bolts. Background Technology

[0002] Bolts need to be heated and then quenched during processing to improve their strength. High-strength bolts require high-frequency heating and quenching to achieve high surface hardness, ensuring that the threads are resistant to wear, stripping, and shearing, thus meeting the load-bearing requirements of bolts of grade 8.8 and above.

[0003] In existing technologies, when performing high-frequency heating and quenching on bolts, bolts are typically arranged neatly using a vibratory feeder. A portion of the bolt is then passed through the heating zone, allowing for localized high-frequency heating. The quenching fluid then quenches the heated portion of the bolt. However, this method cannot quench the entire bolt. Some quenching devices place the bolt vertically on a rotating frame. The rotation of the frame causes the bolt to pass through a heating coil, which then heats the bolt by moving up and down. After heating, the rotating frame is moved downwards to immerse the bolt in the quenching fluid for further quenching. However, this method is inconvenient for loading and unloading bolts, affecting work efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of inconvenience in loading and unloading bolts when heating and quenching the entire bolt, and to design a quenching device for bolts.

[0005] The technical solution of the present invention to achieve the above objectives is as follows: a quenching device for bolts, comprising a quenching box, a high-frequency heater above the quenching box, a lifting plate below the high-frequency heater, the lifting plate being connected to the high-frequency heater via multiple first electric telescopic rods, multiple heating coils installed at the lower end of the lifting plate, a rotating frame installed inside the quenching box, multiple rotating shafts installed at the upper end of the rotating frame, rotating sleeves rotatably mounted on the rotating shafts, a drive frame installed inside the quenching box, the drive frame driving the rotating sleeves to rotate, multiple rotating platforms installed outside the rotating sleeves, permanent magnets installed at the upper and lower ends of the rotating platforms, heat insulation plates installed at one end of the permanent magnets, interception plates installed on both sides of the lower end inside the quenching box, and a heating coil installed above the quenching box. There are multiple vertical material guide channels, which are installed on the quenching box via connecting rods. The permanent magnet can rotate to the bottom of the vertical material guide channel. The lower end of the vertical material guide channel has a discharge port, and the upper end of the vertical material guide channel has a feed port. A guide frame is installed at the top of the quenching box, which can guide the bolts into the vertical material guide channel. An inclined guide net is installed on one side of the lower end of the quenching box. A square opening is provided on one side of the lower end of the inclined guide net, and a discharge channel is installed on the square opening. A cooling box is installed on the ground on one side of the quenching box. The quenching liquid and bolts in the quenching box can enter the cooling box through the square opening. A cooler is installed in the cooling box. The quenching liquid in the cooling box can be returned to the quenching box through a circulation mechanism.

[0006] Furthermore, the rotating frame includes a rotating rod located inside the quenching box. A first rolling bearing is installed at the lower end of the rotating rod, and the lower end of the first rolling bearing is installed on the lower surface inside the quenching box. A rotating shaft is installed at the upper end of the rotating rod, and a first gear is installed at the lower end of the rotating rod. The first gear meshes with a second gear, and a servo motor is installed at the lower end of the second gear. The servo motor is installed at the lower end inside the quenching box, and a protective box is installed at the lower end inside the quenching box. A sealed bearing is installed at the upper end of the protective box, and the upper end of the rotating rod extends from inside the sealed bearing to above the protective box. The protective box isolates the lower end of the rotating rod, the first rolling bearing, the first gear, the second gear, the servo motor, and the quenching liquid. A circular hole is opened on the inclined guide wire to avoid the rotating rod. The outlet openings on the vertical guide channels on both sides of the rotating rod have opposite directions, and the inlet openings on the vertical guide channels on both sides of the rotating rod have the same direction.

[0007] Furthermore, the rotating shaft is equipped with second rolling bearings at both ends, the rotating sleeve is installed on the outer side of the second rolling bearings at both ends, a support wheel is installed on one side of the lower end of the rotating shaft, a circular platform is installed inside the quenching box, a limit groove is opened on the inner side of the circular platform, and one end of the rotating shaft and the support wheel are located in the limit groove.

[0008] Furthermore, the drive frame includes a third gear installed at one end of the rotating sleeve, and arc-shaped racks are provided on both sides inside the quenching box. The third gear can rotate to the top of the arc-shaped rack and mesh with it. The arc-shaped rack is installed inside the quenching box through a connecting block. A square limiting sleeve is installed at one end of the rotating sleeve. An avoidance opening is provided above the arc-shaped rack on the circular platform. The avoidance opening can avoid the square limiting sleeve. An inclined surface is provided at the avoidance opening.

[0009] Furthermore, the guide rack includes a support plate installed on the upper end of the quenching box. A transverse guide channel is installed on the support plate. The transverse guide channel arranges the bolts neatly and feeds them through a vibrating plate. An inlet and outlet are provided on one side of the vertical guide channel, which is connected to the transverse guide channel. The inlet and the inlet and outlet are connected through a connecting channel. A push plate is provided above the support plate. Both ends of the push plate are installed on the support plate through a second electric telescopic rod. A push rod is installed on the front side of the push plate. The push rod can push the bolts into the vertical guide channel through the inlet and outlet.

[0010] Furthermore, a lifting block is provided on one side of the push rod, and guide holes are opened at both ends of the lifting block. A guide rod is provided in the guide hole, and the lower end of the guide rod is installed on the support plate. A limit rod is installed on one side of the lower end of the lifting block. The limit rod can extend between two bolts. The lifting block and the support plate are connected by multiple telescopic springs. A pulley is installed on one side of the lifting block, and a trapezoidal block is installed on the upper end of the push rod. The lower end of the pulley contacts the upper end of the trapezoidal block.

[0011] Furthermore, a movable plate is provided below the high-frequency heater. The movable plate is fixedly connected to the lower end of the lifting plate by multiple fixed rods. Multiple lifting rods are installed at the lower end of the lifting plate. The lifting rods can push the push rod to push the bolt in the vertical guide channel downward.

[0012] Furthermore, a collection box is placed inside the cooling box, with multiple support legs installed at the lower end of the collection box, and multiple liquid permeation holes opened on the collection box.

[0013] Furthermore, the circulation mechanism includes a circulation pump installed below the quenching box, an inlet pipe installed at the inlet end of the circulation pump extending to the inner side of the lower end of the cooling box, and an outlet pipe installed at the outlet end of the circulation pump extending to the upper end of the quenching box.

[0014] Furthermore, the lower end of the inlet and outlet is provided with a square through hole on the transverse material guide channel. The square through hole passes through the support plate. A limiting plate is provided inside the square through hole. An adjusting plate is provided below the support plate. The lower end of the limiting plate is connected to the upper end of the adjusting plate. The adjusting plate is connected to the lower end of the support plate through multiple third electric telescopic rods.

[0015] The beneficial effects of this invention are as follows: The bolts are guided into the vertical guide channel by the guide frame, then fall onto the heat insulation plate. The bolts are attracted by the permanent magnet, preventing them from falling when the rotating frame drives the bolts to rotate. After the bolts are heated by the heating coil, the rotating frame drives the rotating shaft and rotating sleeve to rotate. As the rotating sleeve follows the rotating shaft, the drive frame drives the rotating sleeve to rotate around the rotating shaft, allowing the rotating cylinder to rotate. This allows the heated bolts to be immersed in the quenching liquid for quenching, and another heat insulation plate to rotate upwards to catch new bolts, thus improving work efficiency. When the rotating shaft drives the rotating sleeve to move again, the interceptor plate intercepts the bolts in the quenching liquid, preventing them from falling. The inclined guide net collects the bolts, facilitating bolt loading and unloading and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a quenching device for bolts according to the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 1 A magnified view of a section at point B in the middle; Figure 4 This is a top view of a quenching device for bolts according to the present invention; Figure 5 yes Figure 4 A magnified view of a section at point C; Figure 6 This is a schematic diagram showing the positional relationship between the trapezoidal block and the lifting block described in this invention; Figure 7 This is a schematic diagram showing the positional relationship between the limiting rod and the bolt described in this invention; Figure 8 This is a schematic diagram showing the connection relationship between the vertical material guiding channel and the connecting channel described in this invention; Figure 9 This is a schematic diagram showing the positional relationship between the vertical material guiding channel, the outlet, and the inlet described in this invention; Figure 10 This is a schematic diagram showing the positional relationship between the annular platform and the square limiting sleeve described in this invention; In the diagram, 1. Quenching box; 2. High-frequency heater; 3. Lifting plate; 4. First electric telescopic rod; 5. Heating coil; 6. Rotating frame; 7. Rotating shaft; 8. Rotating sleeve; 9. Drive frame; 10. Rotating table; 11. Permanent magnet; 12. Heat insulation sheet; 13. Interception plate; 14. Vertical guide channel; 15. Connecting rod; 16. Discharge port; 17. Inlet port; 18. Guide frame; 19. Inclined guide net; 20. Square opening; 21. Discharge channel; 22. Cooling box; 23. Refrigerator; 24. Rotating rod; 25. First rolling bearing; 26. First gear; 27. Second gear; 28. Servo motor; 29. ​​Protective box; 30. Sealed bearing; 31. Round hole; 32. Second rolling bearing; 33. Support wheel; 34. 35. Ring platform; 36. Limiting groove; 37. Third gear; 38. Arc rack; 39. Connecting block; 40. Square limiting sleeve; 41. Clearance opening; 42. Support plate; 43. Transverse guide channel; 44. Inlet and outlet; 45. Connecting channel; 46. Push plate; 47. Second electric telescopic rod; 48. Push rod; 49. Lifting block; 50. Guide hole; 51. Guide rod; 52. Limiting rod; 53. Telescopic spring; 54. Pulley; 55. Trapezoidal block; 56. Moving plate; 57. Fixed rod; 58. Lifting rod; 59. Collection box; 60. Support leg; 61. Liquid permeation hole; 62. Circulating pump; 63. Liquid inlet pipe; 64. Liquid outlet pipe; 65. Square through hole; 66. Limiting plate; 67. Adjusting plate; 68. Third electric telescopic rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] This invention provides, for example Figure 1-10The illustrated quenching device for bolts includes a quenching box 1, a high-frequency heater 2 above the quenching box 1, and a lifting plate 3 below the high-frequency heater 2. The lifting plate 3 is connected to the high-frequency heater 2 via multiple first electric telescopic rods 4. Multiple heating coils 5 are installed at the lower end of the lifting plate 3. A rotating frame 6 is installed inside the quenching box 1, and multiple rotating shafts 7 are installed at the upper end of the rotating frame 6. Rotating sleeves 8 are rotatably mounted on the rotating shafts 7. A drive frame 9 is installed inside the quenching box 1, which can drive the rotating sleeves 8 to rotate. Multiple rotating platforms 10 are installed on the outside of the rotating sleeves 8. Permanent magnets 11 are installed at the upper and lower ends of the rotating platforms 10. A heat insulation plate 12 is installed at one end of each permanent magnet 11. Interception plates 13 are installed on both sides of the lower end inside the quenching box 1. Multiple vertical material guide channels 14 are provided above the quenching box 1. The permanent magnet 11 is mounted on the quenching box 1 via the connecting rod 15 and can rotate to the bottom of the vertical guide channel 14. The vertical guide channel 14 has a discharge port 16 at the bottom and a feed port 17 at the top. The quenching box 1 is equipped with a guide frame 18 at the top, which can guide the bolts into the vertical guide channel 14. An inclined guide net 19 is installed on one side of the lower end of the quenching box 1. A square opening 20 is provided on one side of the lower end of the inclined guide net 19. A discharge channel 21 is installed on the square opening 20. A cooling box 22 is installed on the ground on one side of the quenching box 1. The quenching liquid and bolts in the quenching box 1 can enter the cooling box 22 through the square opening 20. A cooler 23 is installed in the cooling box 22. The quenching liquid in the cooling box 22 can return to the quenching box 1 through a circulation mechanism.

[0020] The bolt quenching process of this device is as follows: The rotating frame 6 drives multiple rotating shafts 7 to rotate, and the rotating shafts 7 drive the rotating sleeve 8 to rotate. The drive frame 9 drives the rotating sleeve 8 to rotate outside the rotating shafts 7, thus allowing the rotating table 10 to rotate below the vertical guide channel 14. This positions a heat insulation plate 12 directly below the vertical guide channel 14. A bolt is guided into the vertical guide channel 14 through the feed inlet 17 by the guide frame 18. Under gravity, the bolt slides downwards and lands on the heat insulation plate 12. The permanent magnet 11 then attracts the bolt. As the rotating frame 6 drives the rotating shafts 7 and rotating sleeve 8 to rotate, the bolt exits from the discharge port. The bolt is moved out at 16 points to prevent it from falling off. Then, the rotating frame 6 drives the rotating shaft 7 and rotating sleeve 8 to rotate 90 degrees, allowing the bolt to rotate below the heating coil 5. Then, the first electric telescopic rod 14 is activated to extend, allowing the lifting plate 3 and heating coil 5 to move downwards, thereby heating the bolt. The heat insulation sheet 12 prevents the heat from the bolt from being transferred to the permanent magnet 11, thus protecting the permanent magnet 11. Then, the rotating frame 6 drives the rotating shaft 7 and rotating sleeve 8 to rotate 90 degrees again. During this process, the drive frame 9 drives the rotating sleeve 8 to rotate 180 degrees around the rotating shaft 7, thereby immersing the bolt in the quenching liquid for quenching. When the bolt enters the quenching liquid, it causes another permanent magnet 11 and heat insulation plate 12 on the rotating table 10 to rotate upwards, and the heat insulation plate 12 to move below another vertical guide channel 14. Then, the guide frame 18 guides the bolt back above the heat insulation plate 12. The rotating frame 6 drives the rotating shaft 7 and rotating sleeve 8 to rotate 90 degrees again. During this process, the bolt in the quenching liquid can pass through the intercepting plate 13, which pushes the bolt off the heat insulation plate 12 onto the inclined guide net 19. When the rotating shaft 7 and rotating sleeve 8 have rotated 90 degrees, the second bolt can move below the heating coil 5, and then the bolt can be heated. Repeating the above process can continuously... The bolts are continuously subjected to high-frequency heating and quenching. By installing multiple rotating shafts 7 and multiple rotating tables 10 on the rotating sleeve 8, multiple bolts can be heated and quenched at a time. The heating and quenching processes can be carried out on different bolts at the same time, thereby improving work efficiency. The bolts falling on the inclined guide net 19 can fall into the cooling box 22 through the square opening 20 and the discharge channel 21, so that the processed bolts can be collected. The quenching liquid in the quenching box 1 falls into the cooling box 22 through the square opening 20 and the discharge channel 21. After the quenching liquid is cooled by the refrigerator 23, it is introduced into the quenching box 1 through the circulation mechanism, so that the quenching liquid can be recycled.

[0021] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2The rotating frame 6 includes a rotating rod 24 located inside the quenching chamber 1. A first rolling bearing 25 is installed at the lower end of the rotating rod 24, and the lower end of the first rolling bearing 25 is installed on the lower surface inside the quenching chamber 1. A rotating shaft 7 is installed at the upper end of the rotating rod 24. A first gear 26 is installed at the lower end of the rotating rod 24, and the first gear 26 meshes with a second gear 27. A servo motor 28 is installed at the lower end of the second gear 27, and the servo motor 28 is installed at the lower end inside the quenching chamber 1. A protective box 29 is installed at the lower end inside the quenching chamber 1, and a protective box 29 is installed at the upper end of the protective box 29. There is a sealed bearing 30. The upper end of the rotating rod 24 extends from the sealed bearing 30 to the top of the protective box 29. The protective box 29 isolates the lower end of the rotating rod 24, the first rolling bearing 25, the first gear 26, the second gear 27, the servo motor 28 from the quenching liquid. The inclined guide net 19 has a circular hole 31 to avoid the rotating rod 24. The outlet 16 on the vertical guide channel 14 on both sides of the rotating rod 24 has opposite opening directions, and the inlet 17 on the vertical guide channel 14 on both sides of the rotating rod 24 has the same opening direction.

[0022] The process of rotating the rotating frame 6 driving the rotating shaft 7 to rotate is as follows: the servo motor 28 is started to rotate, and the servo motor 28 can drive the second gear 27 to rotate. The second gear 27 meshes with the first gear 26, which can drive the first gear 26 and the rotating rod 24 to rotate. When the rotating rod 24 rotates, it can drive the rotating shaft 7 to rotate. The protective box 29 can protect the servo motor 28, the first gear 26, and the second gear 27. The round hole 31 can avoid the rotating rod 24, so that the rotating rod 24 can rotate. The discharge port 16 and the inlet port 17 opened on the vertical guide channel 14 can facilitate the loading of bolts.

[0023] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 3 The rotating shaft 7 has two ends equipped with second rolling bearings 32, and the rotating sleeve 8 has two ends installed on the outside of the second rolling bearings 32. A support wheel 33 is installed on one side of the lower end of the rotating shaft 7. A circular platform 34 is installed inside the quenching box 1. A limit groove 35 is opened on the inner side of the circular platform 34. One end of the rotating shaft 7 and the support wheel 33 are located in the limit groove 35. The rotating sleeve 8 and the rotating shaft 7 are connected by the second rolling bearings 32, which facilitates the rotation of the rotating sleeve 8 on the outside of the rotating shaft 7. The support wheel 33 and the limit groove 35 can support the rotating shaft 7 and reduce the friction when the rotating shaft 7 moves.

[0024] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 3 Instruction manual attached Figure 4 Included with instruction manual Figure 10The drive frame 9 includes a third gear 36 installed at one end of the rotating sleeve 8. Arc-shaped racks 37 are provided on both sides inside the quenching box 1. The third gear 36 can rotate to the top of the arc-shaped rack 37 and mesh with the arc-shaped rack 37. The arc-shaped rack 37 is installed in the quenching box 1 through the connecting block 38. A square limiting sleeve 39 is installed at one end of the rotating sleeve 8. An avoidance opening 40 is provided above the arc-shaped rack 37 on the annular platform 34. The avoidance opening 40 can avoid the square limiting sleeve 39. An inclined surface is provided at the avoidance opening 40.

[0025] The process of the drive frame 9 driving the rotating sleeve 8 to rotate is as follows: Under normal conditions, the square limiting sleeve 39 is located in the limiting groove 35. Through the limiting effect of the limiting groove 35 on the square limiting sleeve 39, a permanent magnet 11 and a heat insulation plate 12 on the rotating table 10 can be positioned directly above, which facilitates the connection of bolts. When the third gear 36 moves to the arc-shaped rack 37, the third gear 36 can mesh with the arc-shaped rack 37, which in turn allows the third gear 36 and the rotating sleeve 8 to rotate. At this time, the square limiting sleeve 39 rotates to the clearance opening 40. The annular platform 34 and the limiting groove 35 will not obstruct the rotation of the rotating sleeve 8, thus allowing the rotating sleeve 8 to rotate freely. The rotating platform 10 rotates about 180 degrees, which makes it easy to change the position of the bolts at the upper and lower ends of the rotating platform 10. When the third gear 36 and the arc rack 37 are disconnected, the square limiting sleeve 39 can re-enter the limiting groove 35, thereby ensuring the position of the rotating platform 10 so that the permanent magnet 11 and the heat insulation sheet 12 are directly above. The inclined surface can leave a margin when the square limiting sleeve 39 is not fully rotated into place, thereby ensuring that the square limiting sleeve 39 enters the limiting groove 35.

[0026] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 4 Instruction manual attached Figure 5 Included with instruction manual Figure 6 The guide rack 18 includes a support plate 41 installed on the upper end of the quenching box 1. A transverse guide channel 42 is installed on the support plate 41. The transverse guide channel 42 arranges the bolts neatly and feeds them through a vibrating plate. An inlet and outlet 43 is provided on one side of the vertical guide channel 14, which is opened on the transverse guide channel 42. The feed port 17 and an inlet and outlet 43 are connected through a connecting channel 44. A push plate 45 is provided above the support plate 41. The two ends of the push plate 45 are installed on the support plate 41 through a second electric telescopic rod 46. A push rod 47 is installed on the front side of the push plate 45. The push rod 47 can push the bolts into the vertical guide channel 14 through the inlet and outlet 43.

[0027] The process of the guide frame 18 guiding the bolts into the vertical guide channel 14 is as follows: The bolts can be arranged in the horizontal guide channel 42 by the vibrating plate, and the bolts can move in the horizontal guide channel 42. When feeding, the second electric telescopic rod 46 is activated to shorten, which can drive the push plate 45 and the push rod 47 to move. The push rod 47 can push the bolts located in the inlet and outlet 43 into the vertical guide channel 14 through the connecting channel 44. At this time, under the squeezing force of the push rod 47 and the vertical guide channel 14, the bolts can be straightened and prevented from falling. Then, the second electric telescopic rod 46 is activated to extend, which can make the push plate 45 and the push rod 47 return to their original positions. Then, under the action of gravity, the bolts fall onto the heat insulation sheet 12.

[0028] Refer to the instruction manual appendix Figure 4 Instruction manual attached Figure 5 Instruction manual attached Figure 6 Included with instruction manual Figure 7 A lifting block 48 is provided on one side of the push rod 47. Guide holes 49 are opened at both ends of the lifting block 48. Guide rods 50 are provided in the guide holes 49. The lower end of the guide rods 50 is installed on the support plate 41. A limit rod 51 is installed on one side of the lower end of the lifting block 48. The limit rod 51 can extend between two bolts. The lifting block 48 and the support plate 41 are connected by multiple telescopic springs 52. A pulley 53 is installed on one side of the lifting block 48. A trapezoidal block 54 is installed on the upper end of the push rod 47. The lower end of the pulley 53 contacts the upper end of the trapezoidal block 54.

[0029] The process of limiting the bolt by the limiting rod 52 is as follows: Under normal conditions, the pulley 53 is located at the upper end of the trapezoidal block 54, the telescopic spring 52 is in a stretched state, and the limiting rod 51 is located above the end of the bolt. When the push rod 47 moves towards the bolt, the trapezoidal block 54 can move. When the pulley 53 moves to the inclined surface of the trapezoidal block 54, under the action of gravity and the tension of the telescopic spring 52, the pulley 53, the lifting block 48, and the limiting rod 51 can move downward. The guide hole 49 and the guide rod 50 can ensure the direction of movement of the lifting block 48. When the limiting rod 51 moves downward, it can limit the bolt on the rear side to prevent the bolt from moving forward. Then, the push rod 47 contacts the bolt and loads the bolt. After loading is completed, the push rod 47 returns to its original position. The inclined surface of the trapezoidal block 54 can move the pulley 53 and the lifting block 48 upward and drive the limiting rod 51 to move, thereby avoiding the bolt and allowing the bolt to continue moving.

[0030] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 3Below the high-frequency heater 2, there is a movable plate 55. The movable plate 55 is fixedly connected to the lower end of the lifting plate 3 through multiple fixed rods 56. Multiple lifting rods 57 are installed at the lower end of the lifting plate 3. The lifting rods 57 can push the bolts in the vertical guide channel 14 by pushing the push rod 47 downward. When the rotating shaft 7 drives the bolts to move, a set of heat insulation sheets 12 can move the bolts to the lower end of the heating coil 5, and another set of heat insulation sheets 12 can move to the lower end of the vertical guide channel 14. After the guide frame 18 guides the bolts into the vertical guide channel 14, the lifting plate 3 is moved downward. At this time, the bolts can be heated by the heating coil 5. At the same time, the lifting plate 3 can push the movable plate 55 and the lifting rods 57 downward through the fixed rods 56. The lifting rods 57 can push the bolts in the vertical guide channel 14 downward to prevent the bolts from blocking the vertical guide channel 14. Then the lifting plate 3 moves upward and drives the heating coil 5, the movable plate 55, and the push rods 57 back to their original positions.

[0031] Refer to the instruction manual appendix Figure 1 The cooling box 22 contains a collection box 58. Multiple support legs 59 are installed at the lower end of the collection box 58. Multiple liquid permeation holes 60 are opened on the collection box 58. Bolts can be collected through the collection box 58. After a certain number are collected, the staff will remove the collection box 58 and replace it with a new one. The liquid permeation holes 60 facilitate the flow of quenching liquid in the collection box 58 into the cooling box 22.

[0032] Refer to the instruction manual appendix Figure 1 The circulation mechanism includes a circulation pump 61 installed below the quenching box 1. The inlet end of the circulation pump 61 is equipped with an inlet pipe 62, which extends to the inner side of the lower end of the cooling box 22. The outlet end of the circulation pump 61 is equipped with an outlet pipe 63, which extends to the upper end of the quenching box 1. When the circulation pump 61 is started, the circulation pump 61 can draw quenching liquid from the cooling box 22 through the inlet pipe 62, and then discharge the quenching liquid into the quenching box 1 through the outlet pipe 63.

[0033] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 3 Instruction manual attached Figure 4 Instruction manual attached Figure 5 Instruction manual attached Figure 6 Included with instruction manual Figure 7The lower end of the inlet / outlet 43 is provided with a square through hole 64 on the transverse guide channel 42. The square through hole 64 passes through the support plate 41. A limiting plate 65 is provided inside the square through hole 64. An adjusting plate 66 is provided below the support plate. The lower end of the limiting plate 65 is connected to the upper end of the adjusting plate 66. The adjusting plate 66 is connected to the lower end of the support plate 41 through multiple third electric telescopic rods 67. When the bolt moves in the transverse guide channel 42, the third electric telescopic rod 67 is activated to shorten, which can drive the adjusting plate 66 and the limiting plate 65 to move upward. In this way, the bolt can be limited by the limiting plate 65 to prevent the bolt from falling from the inlet / outlet 43. When the push rod 47 pushes the bolt into the vertical guide channel 14, the third electric telescopic rod 67 is activated to extend, which can drive the adjusting plate 66 and the limiting plate 65 to move downward, thus avoiding the bolt.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quenching device for bolts, comprising a quenching box (1), a high-frequency heater (2) above the quenching box (1), a lifting plate (3) below the high-frequency heater (2), the lifting plate (3) being connected to the high-frequency heater (2) via a plurality of first electric telescopic rods (4), and a plurality of heating coils (5) installed at the lower end of the lifting plate (3), characterized in that, The quenching box (1) is equipped with a rotating frame (6), and multiple rotating shafts (7) are installed on the upper end of the rotating frame (6). A rotating sleeve (8) is rotatably installed on the rotating shaft (7). A drive frame (9) is installed inside the quenching box (1). The drive frame (9) can drive the rotating sleeve (8) to rotate. Multiple rotating platforms (10) are installed on the outside of the rotating sleeve (8). Permanent magnets (11) are installed at the upper and lower ends of the rotating platforms (10). A heat insulation plate (12) is installed at one end of the permanent magnet (11). A baffle plate (13) is installed on both sides of the lower end inside the quenching box (1). Multiple vertical material guide channels (14) are provided above the quenching box (1). The vertical material guide channels (14) are installed on the quenching box (1) through connecting rods (15). The permanent magnets (11) can rotate to the bottom of the vertical material guide channels (14). The lower end has a discharge port (16), the upper end of the vertical guide channel (14) has a feed port (17), the upper end of the quenching box (1) is equipped with a guide frame (18), the guide frame (18) can guide the bolt into the vertical guide channel (14), the lower end of the quenching box (1) is equipped with an inclined guide net (19), the lower end of the inclined guide net (19) is provided with a square opening (20) on the quenching box (1), the square opening (20) is equipped with a discharge channel (21), the ground on one side of the quenching box (1) is equipped with a cooling box (22), the quenching liquid and bolts in the quenching box (1) can enter the cooling box (22) through the square opening (20), the cooling box (22) is equipped with a refrigerator (23), the quenching liquid in the cooling box (22) can return to the quenching box (1) through the circulation mechanism.

2. The quenching device for bolts according to claim 1, characterized in that, The rotating frame (6) includes a rotating rod (24) located inside the quenching box (1). A first rolling bearing (25) is installed at the lower end of the rotating rod (24). The lower end of the first rolling bearing (25) is installed on the lower surface inside the quenching box (1). A rotating shaft (7) is installed at the upper end of the rotating rod (24). A first gear (26) is installed at the lower end of the rotating rod (24). The first gear (26) meshes with a second gear (27). A servo motor (28) is installed at the lower end of the second gear (27). The servo motor (28) is installed at the lower end inside the quenching box (1). A protective box (29) is installed at the lower end inside the quenching box (1). A protective box (29) is installed at the upper end of the protective box (29). Equipped with a sealed bearing (30), the upper end of the rotating rod (24) extends from inside the sealed bearing (30) to above the protective box (29). The protective box (29) isolates the lower end of the rotating rod (24), the first rolling bearing (25), the first gear (26), the second gear (27), the servo motor (28) from the quenching liquid. The inclined guide net (19) has a round hole (31) to avoid the rotating rod (24). The outlet (16) on the vertical guide channel (14) on both sides of the rotating rod (24) has opposite opening directions, and the inlet (17) on the vertical guide channel (14) on both sides of the rotating rod (24) has the same opening direction.

3. A quenching device for bolts according to claim 2, characterized in that, The rotating shaft (7) is equipped with second rolling bearings (32) at both ends, and the rotating sleeve (8) is installed on the outside of the second rolling bearings (32) at both ends. A support wheel (33) is installed on one side of the lower end of the rotating shaft (7). A circular platform (34) is installed in the quenching box (1). A limit groove (35) is opened on the inner side of the circular platform (34). One end of the rotating shaft (7) and the support wheel (33) are located in the limit groove (35).

4. A quenching device for bolts according to claim 3, characterized in that, The drive frame (9) includes a third gear (36) installed at one end of the rotating sleeve (8). The quenching box (1) has an arc-shaped rack (37) on both sides. The third gear (36) can rotate to the top of the arc-shaped rack (37) and mesh with the arc-shaped rack (37). The arc-shaped rack (37) is installed in the quenching box (1) through the connecting block (38). A square limiting sleeve (39) is installed at one end of the rotating sleeve (8). A clearance opening (40) is provided on the circular platform (34) above the arc-shaped rack (37). The clearance opening (40) can avoid the square limiting sleeve (39). An inclined surface is provided at the clearance opening (40).

5. A quenching device for bolts according to claim 1, characterized in that, The guide rack (18) includes a support plate (41) installed on the upper end of the quenching box (1). A transverse guide channel (42) is installed on the support plate (41). The transverse guide channel (42) arranges the bolts neatly and feeds them through a vibrating plate. An inlet (43) is provided on one side of the vertical guide channel (14) on the transverse guide channel (42). The feed inlet (17) and an inlet (43) are connected through a connecting channel (44). A push plate (45) is provided above the support plate (41). The two ends of the push plate (45) are installed on the support plate (41) through a second electric telescopic rod (46). A push rod (47) is installed on the front side of the push plate (45). The push rod (47) can push the bolts into the vertical guide channel (14) through the inlet (43).

6. A quenching device for bolts according to claim 5, characterized in that, The push rod (47) has a lifting block (48) on one side. The lifting block (48) has guide holes (49) at both ends. A guide rod (50) is provided in the guide hole (49). The lower end of the guide rod (50) is installed on the support plate (41). A limit rod (51) is installed on one side of the lower end of the lifting block (48). The limit rod (51) can extend between two bolts. The lifting block (48) and the support plate (41) are connected by multiple telescopic springs (52). A pulley (53) is installed on one side of the lifting block (48). A trapezoidal block (54) is installed on the upper end of the push rod (47). The lower end of the pulley (53) contacts the upper end of the trapezoidal block (54).

7. A quenching device for bolts according to claim 6, characterized in that, The high-frequency heater (2) is provided with a movable plate (55) below it. The movable plate (55) is fixedly connected to the lower end of the lifting plate (3) by multiple fixed rods (56). Multiple lifting rods (57) are installed at the lower end of the lifting plate (3). The lifting rods (57) can push the push rod (47) to the bolt in the vertical guide channel (14) and push it downward.

8. A quenching device for bolts according to claim 1, characterized in that, The cooling box (22) contains a collection box (58), and the lower end of the collection box (58) is equipped with multiple support legs (59). The collection box (58) has multiple liquid permeation holes (60).

9. A quenching device for bolts according to claim 1, characterized in that, The circulation mechanism includes a circulation pump (61) installed below the quenching box (1), an inlet pipe (62) installed at the inlet end of the circulation pump (61), the inlet end of the inlet pipe (62) extends to the inner side of the lower end of the cooling box (22), and an outlet pipe (63) installed at the outlet end of the circulation pump (61), the outlet end of the outlet pipe (63) extends to the upper end of the quenching box (1).

10. A quenching device for bolts according to claim 6, characterized in that, The lower end of the inlet and outlet (43) is provided with a square through hole (64) on the transverse guide channel (42). The square through hole (64) passes through the support plate (41). A limiting plate (65) is provided inside the square through hole (64). An adjusting plate (66) is provided below the support plate. The lower end of the limiting plate (65) is connected to the upper end of the adjusting plate (66). The adjusting plate (66) is connected to the lower end of the support plate (41) through multiple third electric telescopic rods (67).

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