Horizontal high-frequency quenching machine

Abstract

The invention discloses a horizontal high-frequency quenching machine which comprises a heating mechanism, a feeding mechanism and a posture adjusting mechanism. The heating mechanism comprises a shell and induction coils, the shell is fixedly arranged, and the multiple induction coils are sequentially arranged in the shell in the linear direction; the feeding mechanism comprises feeding rollers and a pushing hydraulic cylinder, the multiple feeding rollers are sequentially arranged in the shell in the arrangement direction of the induction coil and are all rotatably arranged, and the pushing hydraulic cylinder is arranged outside one end of the shell; the posture adjusting mechanism comprises multiple sets of steering rods, the multiple sets of steering rods are arranged in the shell in the arrangement direction of the induction coil, each steering rod comprises two steering rods, and the two steering rods can move relatively and are located on the two sides of the steel bar correspondingly. When the horizontal high-frequency quenching machine is used, the steel bar is driven by the steering rod for multiple times to rotate, so that the contact position of the steel bar and the feeding roller can be changed, and one surface part is prevented from bearing pressure all the time, so that the heating is more uniform, and the quenching effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-frequency quenching, and particularly relates to a horizontal high-frequency quenching machine. Background Art

[0002] High-frequency induction heating surface quenching is a quenching method that utilizes the principle of electromagnetic induction to make parts cut magnetic lines of force in an alternating magnetic field, generate induced current on the surface, and rapidly heat the surface of the parts in the form of eddy current according to the skin effect of alternating current. This method has the advantages of fast heating speed and high thermal efficiency, and since the heating time is short, there is little oxidation and decarburization on the surface of the parts, so the rejection rate of the parts is extremely low.

[0003] Currently, for the horizontal high-frequency quenching device used for quenching metal bars, usually the metal bars are laid down and enter the quenching device through the way of roller conveying, and are heated by passing through multiple induction coils in sequence. Since the diameters of the metal bars are not exactly the same, and some metal bars are irregularly circular, there is a situation where the distances between different parts and the induction coils are different, which will cause uneven heating and affect the quenching effect. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the present invention proposes a horizontal high-frequency quenching machine, which can improve the uniform heating of metal bars in the horizontal quenching device.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A horizontal high-frequency quenching machine includes a heating mechanism, a feeding mechanism, and an attitude adjustment mechanism; The heating mechanism includes a housing and induction coils. The housing is fixedly arranged, and a plurality of the induction coils are sequentially arranged in the housing along a straight line direction; The feeding mechanism includes feeding rollers and a propulsion hydraulic cylinder. A plurality of the feeding rollers are sequentially arranged in the housing along the arrangement direction of the induction coils and are rotatably arranged, and the propulsion hydraulic cylinder is arranged outside one end of the housing; The attitude adjustment mechanism includes multiple groups of steering rods. The multiple groups of steering rods are arranged in the housing along the arrangement direction of the induction coils, and each group includes two steering rods. The two steering rods can move relative to each other and are respectively located on both sides of the steel bar.

[0006] Place the steel bar on multiple feeding rollers, push the steel bar forward by the propulsion hydraulic cylinder to enter the interior of the housing, then place the next steel bar on the feeding end and abut it against the previous steel bar, and push it forward by the propulsion hydraulic cylinder. After the steel bar enters the interior of the housing, it will sequentially pass through multiple induction coils, and the induction coils will gradually heat it. And during the heating process, the two steering rods can move towards each other and respectively contact the surface of the steel bar from both sides of the steel bar, thereby driving it to rotate.

[0007] The beneficial effects of the above horizontal high-frequency quenching machine are as follows: The steel bar is driven to rotate on the feeding roller by the steering rod, so that different surface positions of the steel bar can be heated from the inner side of the coils with different orientations, thereby making the heating more uniform and improving the quenching effect.

[0008] Further, the induction coils and the feeding rollers are arranged alternately, and the induction coils are located at positions between adjacent feeding rollers.

[0009] The induction coils and the feeding rollers are arranged alternately, so that the induction coils can ensure that the whole body of the steel bar is heated, avoiding the lack of heating range.

[0010] Further, the attitude adjustment mechanism further includes a driving motor and a transmission gear. Link rods are provided on the sides of the two steering rods away from each other. The other ends of the link rods extend out of the housing and are connected with a toothed plate. The transmission gear is rotatably arranged on the housing and meshes with the toothed plates of the two link rods on both sides respectively. The driving motor is connected with the transmission gears of multiple groups of steering rods through a coupling.

[0011] The driving motor can drive the transmission gears of multiple groups of steering rods to rotate simultaneously through the coupling. The transmission gear drives the toothed plates on both sides to move relatively, thereby driving the link rods and the steering rods to move relatively. The two steering rods contact the two sides of the steel bar and continue to move to drive the steel bar to rotate self - rotatably. By the forward and reverse rotation of the driving motor, the steel bar can be driven to rotate forward and reverse multiple times, making the heating more uniform.

[0012] Further, the feeding mechanism further includes a blanking table and a second feeding roller. A plurality of feeding rollers are provided on the outer parts of both ends of the housing and extend outwards. The blanking table is arranged beside the feeding roller at the feeding port of the housing. The second feeding roller is arranged on the side of the blanking table away from the feeding roller; The blanking table is an inclined table, with the lower end beside the feeding roller. The blanking table has a cavity inside, and strip - shaped holes communicating with the cavity are opened on the surface. A rotatable blocking rod is arranged in the cavity, and the end of the blocking rod can rotate to the surface of the blanking table; The plurality of second feeding rollers are arranged in sequence along a straight - line direction and are all rotatably arranged. The end of the feeding is beside the upper end of the blanking table.

[0013] During feeding, the steel bar is conveyed from the outside to the blanking table by the second feeding roller. After the steel bar enters the blanking table, it rolls down under the action of the inclined plane and is rotated by the upper end of the blocking rod. Until the position of the lower feeding roller is empty, the blocking rod rotates into the cavity, and the steel bar can slide onto the feeding roller. Then the end of the blocking rod rotates to the surface of the blanking table again to block the next steel bar.

[0014] Further, the feeding mechanism further includes a rack, a driving gear, a first driven bevel gear and a second driven bevel gear. The propulsion hydraulic cylinder is connected to the rack. The driving gear is rotatably arranged and coaxially connected to the first driven bevel gear. The rack meshes with the driving gear. The baffle is rotatably connected to the blanking table through a rotating shaft. The end of the rotating shaft is coaxially connected to the second driven bevel gear. The first driven bevel gear meshes with the second driven bevel gear.

[0015] When the propulsion hydraulic cylinder pushes the steel bar forward, it can drive the driving gear to rotate through the rack at the same time, thereby driving the first driven bevel gear to rotate, driving the meshing second driven bevel gear to rotate, so that the rotating shaft drives the baffle to rotate. The end of the baffle rotates upward to the surface of the blanking table, and then the next steel bar can be blocked. Until the propulsion hydraulic cylinder retracts backward, the reverse transmission can be used to rotate the end of the baffle into the blanking table, and the steel bar can slide onto the feeding roller, which is convenient for the propulsion hydraulic cylinder to push.

[0016] Further, a plurality of baffles are provided and arranged in sequence along the axial direction of the steel bar.

[0017] The plurality of baffles can improve the blocking effect on the steel bar, and when rotating downward at the same time, the trajectory of the steel bar rolling downward can be made more stable.

[0018] Further, the feeding mechanism further includes a transmission chain. Sprockets are provided at the ends of the second feeding rollers and are chain-driven with the transmission chain.

[0019] The driving source can drive the sprockets to rotate through the transmission chain, thereby driving the second feeding rollers to rotate together, so as to convey the steel bar toward the blanking table.

[0020] Further, arc-shaped grooves are circumferentially formed in the middle of the feeding roller and the second feeding roller.

[0021] The arc-shaped grooves are used to place the steel bar for positioning and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0023] Figure 1 It is the front view of the horizontal high-frequency quenching machine provided by an embodiment of the present invention; Figure 2 is Figure 1 a partially enlarged schematic view of the front view of the horizontal high-frequency quenching machine shown; Figure 3 is Figure 1 the top view of the horizontal high-frequency quenching machine shown; Figure 4 For Figure 3 Partial enlarged schematic view of the top view of the horizontal high-frequency quenching machine shown; Figure 5 For Figure 1 Side view of the horizontal high-frequency quenching machine shown; Reference numerals: 1 - steel bar; 10 - heating mechanism, 11 - housing, 12 - induction coil; 20 - feeding mechanism, 21 - feeding roller, 22 - second feeding roller, 221 - sprocket, 222 - drive chain, 23 - propulsion hydraulic cylinder, 24 - blanking table, 241 - retaining rod, 242 - rotating shaft, 25 - rack, 26 - driving gear, 27 - first driven bevel gear, 28 - second driven bevel gear; 30 - attitude adjustment mechanism, 31 - steering rod, 32 - drive motor, 33 - drive gear, 34 - connecting rod, 35 - toothed plate. Detailed implementation manners

[0024] Hereinafter, embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and thus are only examples and cannot be used to limit the protection scope of the present invention.

[0025] Please refer to Figures 1 to 5 , the present invention provides a horizontal high-frequency quenching machine, including a heating mechanism 20, a feeding mechanism 20 and an attitude adjustment mechanism 30. The steel bar is fed into the heating mechanism 20 by the feeding mechanism 20 for heating, and the attitude adjustment mechanism 30 can help the steel bar 1 rotate to make the heating more uniform.

[0026] Specifically, the heating mechanism 20 includes a housing 11 and an induction coil 12. The housing 11 is fixedly arranged, and a plurality of induction coils 12 are sequentially arranged in the housing 11 along a straight line direction, and the heating temperature of the induction coil 12 gradually increases. The feeding mechanism 20 includes a feeding roller 21 and a propulsion hydraulic cylinder 23. A plurality of feeding rollers 21 are sequentially arranged in the housing 11 along the arrangement direction of the induction coil 12 and are rotatably arranged, and the propulsion hydraulic cylinder 23 is arranged outside one end of the housing 11. The attitude adjustment mechanism 30 includes multiple groups of steering rods 31. The multiple groups of steering rods 31 are arranged in the housing 11 along the arrangement direction of the induction coil 12. Each group includes two steering rods 31. The two steering rods 31 can move relative to each other and are respectively located on both sides of the steel bar 1.

[0027] Place the steel bar 1 on multiple feeding rollers 21, and push the steel bar 1 forward through the propulsion hydraulic cylinder 23 to enter the interior of the housing 11. Then, place the next steel bar 1 on the feeding end and abut it against the previous steel bar 1, and continue to push it forward through the propulsion hydraulic cylinder 23. By repeating this process, a longer quenching production line can be formed. After the steel bar enters the interior of the housing 11, it will successively pass through multiple induction coils 12, and the induction coils 12 will gradually heat it. And during the heating process, the two steering rods 31 can move towards each other and respectively contact the surface of the steel bar from both sides. Continuing to move can drive the steel bar to rotate self - sufficiently, making the steel bar rotate self - sufficiently, making the heating more uniform and improving the quenching effect.

[0028] In this embodiment, the induction coils 12 and the feeding rollers 21 are arranged alternately, and the induction coils 12 are located at the positions between adjacent feeding rollers 21, so that the induction coils 12 can ensure that the whole body of the steel bar is heated, avoiding the lack of heating range.

[0029] Specifically, the attitude adjustment mechanism 30 further includes a driving motor 32. Connecting rods 34 are provided on the sides of the two steering rods 31 away from each other. The connecting rods 34 are in a U - shape, and the other ends extend outside the housing 11 and are connected to a toothed plate 35 located above the housing 11. Strip - shaped holes are opened on both sides of the housing 11 for the connecting rods 34 to extend and move. A structure for limiting the connecting rods 34 is also provided on the housing 11 to ensure the stability of the movement. The transmission gear 33 is rotatably arranged on the housing 11, and meshes with the toothed plates 35 of the two connecting rods 34 on both sides respectively. The driving motor 32 is connected to the transmission gears 33 of multiple groups of steering rods 31 through couplings.

[0030] The driving motor 32 can drive the transmission gears 33 of multiple groups of steering rods 31 to rotate simultaneously, thereby driving the toothed plates 35 on both sides to move relatively. In this embodiment, the steering rods 31 move up and down, so the toothed plates 35 are also vertically arranged and move up and down. The two steering rods 31 are driven to move relatively through the connecting rods 34. The two steering rods 31 contact both sides of the steel bar, and continue to move to drive the steel bar to rotate self - sufficiently. Then the motor rotates again to drive the two steering rods 31 to move relatively in the reverse direction. By repeating this process, the steel bar can be driven to move reciprocally, so that the circumferential surface of the steel bar can be heated from the inner positions of different coils, improving the heating uniformity.

[0031] Specifically, the feeding mechanism 20 further includes a blanking table 24 and a second feeding roller 22. A plurality of feeding rollers 21 are externally provided at both ends of the housing 11 and extend outward. The blanking table 24 is an inclined table, and the lower end is disposed beside the feeding roller 21 at the feeding port of the housing 11. The second feeding roller 22 is disposed beside the upper end of the blanking table 24. The interior of the blanking table 24 has a cavity, and a strip-shaped hole communicating with the cavity is formed on the surface. A rotatable blocking rod 241 is provided in the cavity, and the end of the blocking rod 241 can rotate to the surface of the blanking table 24 through the strip-shaped hole. In this embodiment, a plurality of blocking rods 241 are provided and arranged in sequence along the axial direction of the steel rod. The plurality of second feeding rollers 22 are sequentially arranged in a straight line direction and are all rotatably arranged, and the feeding end is located beside the upper end of the blanking table 24.

[0032] During feeding, the steel rod 1 is conveyed from the outside to the blanking table 24 through the second feeding roller 22. After the steel rod 1 enters the blanking table 24, it rolls downward under the action of the inclined plane and is rotated by the upper end of the blocking rod 241. Until the position of the lower feeding roller 21 is vacated, the blocking rod 241 rotates into the cavity, and the steel rod 1 can slide onto the feeding roller 21. Subsequently, the end of the blocking rod 241 rotates to the surface of the blanking table 24 again to block the next steel rod. The plurality of blocking rods 241 can improve the blocking effect on the steel rod, and at the same time rotate downward, enabling the downward rolling trajectory of the steel rod to be more stable.

[0033] The feeding mechanism 20 further includes a rack 25, a driving gear 26, a first driven bevel gear 27 and a second driven bevel gear 28. The propulsion hydraulic cylinder 23 is connected to the rack 25. The driving gear 26 is rotatably provided and is coaxially connected to the first driven bevel gear 27. The rack 25 meshes with the driving gear 26. The blocking rod 241 is rotatably connected to the blanking table 24 through a rotating shaft 242, and the end of the rotating shaft 242 is coaxially connected to the second driven bevel gear 28. The first driven bevel gear 27 and the second driven bevel gear 28 are meshed.

[0034] When the propulsion hydraulic cylinder 23 pushes the steel rod forward, it can simultaneously drive the driving gear 26 to rotate through the rack 25, thereby driving the first driven bevel gear 27 to rotate, driving the meshed second driven bevel gear 28 to rotate, enabling the rotating shaft 242 to drive the blocking rod 241 to rotate, and the end of the blocking rod 241 rotates upward to the surface of the blanking table 24 to block the next steel rod. Until the propulsion hydraulic cylinder 23 retracts, the reverse transmission can be carried out to make the end of the blocking rod 241 rotate into the blanking table 24, and the steel rod can slide onto the feeding roller 21 for the propulsion hydraulic cylinder 23 to push.

[0035] The feeding mechanism 20 further includes a transmission chain 222. Sprockets 221 are provided at the ends of the second feeding rollers 22, and are in chain drive with the transmission chain 222. Driven by a driving source, the transmission chain 222 can drive the sprockets 221 to rotate, thereby driving the second feeding rollers 22 to rotate together, so as to convey the steel bars towards the blanking table 24. In addition, arc-shaped grooves are circumferentially formed in the middle parts of the feeding rollers 21 and the second feeding rollers 22 for placing the steel bars, which can not only improve the stability, but also play a positioning role.

[0036] The working principle of the above horizontal high-frequency quenching machine is as follows: The steel bars are conveyed through the second feeding rollers 22. After the steel bars are sent to the blanking table 24, they slide down under the action of gravity and are first blocked by the blocking rod 241. When the propulsion hydraulic cylinder 23 retracts, it can drive the blocking rod 241 to rotate through the rack 25 and the rotating shaft 242, etc., so that the steel bars can slide down onto the feeding rollers 21. The propulsion hydraulic cylinder 23 extends again, driving the blocking rod 241 to rotate upward again, and at the same time pushing the steel bar and making it abut against the previous steel bar, and pushing all the steel bars to move forward together.

[0037] After the steel bars enter the interior of the housing 11, they can sequentially pass through a plurality of induction coils 12, and the induction coils 12 gradually heat them. And during the heating process, the two turning rods 31 can move towards each other, respectively contact the surface of the steel bars from both sides and drive the steel bars to rotate self - sufficiently. The forward and reverse rotation of the driving motor 32 drives the turning rods 31 to reciprocate, which can drive the steel bars to rotate reciprocally.

[0038] When using the above horizontal high-frequency quenching machine, driving the steel bars to rotate self - sufficiently through the turning rods can adjust the relative distance between the circular and irregular steel bars and the induction coils, so that the heating is more uniform and the quenching effect is improved.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A horizontal high-frequency quenching machine, characterized in that: It includes a heating mechanism, a feeding mechanism, and an attitude adjustment mechanism; The heating mechanism includes a housing and induction coils. The housing is fixedly arranged, and a plurality of the induction coils are sequentially arranged in the housing along a straight line direction; The feeding mechanism includes feeding rollers and a propulsion hydraulic cylinder. A plurality of the feeding rollers are sequentially arranged in the housing along the arrangement direction of the induction coils and are all rotatably arranged. The propulsion hydraulic cylinder is arranged outside one end of the housing; The attitude adjustment mechanism includes multiple groups of steering rods. The multiple groups of steering rods are arranged in the housing along the arrangement direction of the induction coils and each group includes two steering rods. The two steering rods can move relative to each other and are respectively located on both sides of the steel bar.

2. The horizontal high-frequency quenching machine according to claim 1, characterized in that: The induction coils and the feeding rollers are arranged alternately, and the induction coils are located at positions between adjacent feeding rollers.

3. The horizontal high-frequency quenching machine according to claim 1, characterized in that: The attitude adjustment mechanism further includes a driving motor and transmission gears. Connecting rods are provided on the sides of the two steering rods away from each other. The other ends of the connecting rods extend out of the housing and are connected with toothed plates. The transmission gears are rotatably arranged on the housing and are respectively meshed with the toothed plates of the two connecting rods on both sides. The driving motor is connected to the transmission gears of multiple groups of steering rods through a coupling.

4. The horizontal high-frequency quenching machine according to claim 1, wherein: The feeding mechanism further includes a blanking table and second feeding rollers. A plurality of second feeding rollers are arranged outside both ends of the housing and extend outward. The blanking table is arranged beside the feeding rollers at the feeding port of the housing. The second feeding rollers are arranged on the side of the blanking table away from the feeding rollers; The blanking table is an inclined table, with the lower end beside the feeding rollers. The interior of the blanking table has a cavity, and strip-shaped holes communicating with the cavity are opened on the surface. A rotatable blocking rod is arranged in the cavity, and the end of the blocking rod can rotate to the surface of the blanking table; A plurality of the second feeding rollers are sequentially arranged along a straight line direction and are all rotatably arranged. The feeding end is beside the upper end of the blanking table.

5. The horizontal high-frequency quenching machine according to claim 4, characterized in that: The feeding mechanism further includes a rack, a driving gear, a first driven bevel gear, and a second driven bevel gear. The propulsion hydraulic cylinder is connected to the rack. The driving gear is rotatably arranged and is coaxially connected with the first driven bevel gear. The rack is meshed with the driving gear. The blocking rod is rotatably connected to the blanking table through a rotating shaft. The end of the rotating shaft is coaxially connected with the second driven bevel gear. The first driven bevel gear and the second driven bevel gear are meshed.

6. The horizontal high-frequency quenching machine according to claim 4, characterized in that: A plurality of the blocking rods are arranged sequentially along the axial direction of the steel bar.

7. The horizontal high-frequency quenching machine according to claim 4, characterized in that: The feeding mechanism further includes a transmission chain. Sprockets are provided at the ends of the second feeding rollers and are chain-driven with the transmission chain.

8. The horizontal high-frequency quenching machine according to claim 4, wherein: Arc-shaped grooves are circumferentially formed in the middle of both the feeding rollers and the second feeding rollers.

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