A heat treatment device for the uniformity of the hardened layer depth of a pin

Abstract

The present invention discloses a heat treatment device for uniformity of the depth of the hardened layer of a pin shaft, comprising a rotating disk, a plurality of fixing mechanisms, an induction heater, a rotary drive mechanism and a discharge drive mechanism, wherein the rotating disk is provided with fixing mechanisms arranged at intervals in a circular shape, the fixing mechanisms comprising a rotating sleeve I, a positioning sleeve I and a plurality of supporting mechanisms, the upper end of the rotating sleeve I is provided with an elastically sliding and rotatable positioning sleeve I, the rotating sleeve I is provided with a supporting mechanism for supporting the pin shaft inserted into the positioning sleeve I, a lifting mechanism is provided on one side of the rotating disk, the lifting mechanism is provided with an induction coil of an induction heater, the rotating disk drives the fixing mechanisms to sequentially enter under the induction coil, and compared with the prior art, it can improve the hard zone layer depth and the uniformity of hardness distribution, and improve adaptability.

Description

Technical field

[0001] The present invention relates to the technical field of heat treatment equipment, in particular to the technical field of heat treatment equipment for ensuring the depth uniformity of a pin hardening layer. [Background Technology]

[0002] The application number is CN202120293228.X, which is a simple feeding device for heat treatment of steel plate pins. It includes a base, a servo motor, a turntable, positioning holes, a vertical plate, a baffle, a high-frequency heating furnace, a cylinder, an insulating bracket, an induction coil, a wire, a quenching barrel, an electric-controlled reversing valve, an air supply pipe, a distribution box, a power supply, a multi-way controller, a display screen, a contactor, and a power cord. When in use, the worker turns on the power and turns on the multi-way controller through the operation key on the display screen to enter the working state. The multi-way controller controls the contactor to connect, and the multi-way controller controls the servo motor to drive the turntable to rotate 60° counterclockwise and pause for 5-8 seconds each time (when there are 6 positioning holes on the turntable, it rotates 60° each time). While the servo motor pauses, the multi-way controller controls the electric-controlled reversing valve to drive the upper chamber of the cylinder through high-pressure gas to force the piston rod to drive the insulating bracket and the induction coil to quickly descend and then stop for 4-7 seconds. Then the multi-way controller controls the electric-controlled reversing valve to drive the lower chamber of the cylinder through high-pressure gas to force the piston rod to drive the insulating bracket and the induction coil to quickly reset. At this time, the worker will The steel plate pins to be quenched are inserted vertically into the positioning holes on the right side of the turntable in turn. The servo motor drives the turntable to rotate intermittently to send the steel plate pins to the bottom of the induction coil in turn. The piston rod drives the induction coil to descend and then sleeves it on the middle of the outer edge of the steel plate pin. The eddy current generated by the induction coil quickly heats the middle of the steel plate pin for 3-6 seconds. After that, the piston rod resets the induction coil upward. The servo motor drives the turntable to send the heated steel plate pin to the front of the baffle. The bottom of the steel plate pin loses support and falls into the chute. It then slides into the quenching barrel and is quickly cooled by the coolant to achieve the purpose of quenching. The multi-channel controller controls the servo motor and the electronically controlled reversing valve to quench the steel plate pin in sequence according to the above steps. Since the quenched steel plate pins are inserted vertically into the positioning holes on the right side of the turntable in sequence, the steel plate pins are fixed during the quenching process, resulting in poor uniformity in the hard zone layer depth and hardness distribution. In addition, when the steel plate pins are inserted into the positioning holes, the inserted part of the steel plate pins cannot be quenched. When the pins need to complete the entire quenching treatment at one time, they cannot adapt, resulting in poor adaptability. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a heat treatment device for improving the uniformity of the hardened layer depth of a pin shaft, which can improve the uniformity of the hard zone layer depth and hardness distribution and improve adaptability.

[0004] To achieve the above-mentioned purpose, the present invention proposes a heat treatment equipment for the uniformity of the depth of the hardened layer of a pin shaft, comprising a rotating disk, a plurality of fixing mechanisms, an induction heater, a rotating drive mechanism and a discharging drive mechanism, the rotating disk is provided with a fixing mechanism arranged at intervals in a circular shape, the fixing mechanism comprises a rotating sleeve I, a positioning sleeve I and a plurality of supporting mechanisms, the upper end of the rotating sleeve I is provided with an elastically sliding and rotatable positioning sleeve I, the rotating sleeve I is provided with a supporting mechanism for supporting the pin shaft inserted into the positioning sleeve I, a lifting mechanism is provided on one side of the rotating disk, the lifting mechanism is provided with an induction coil of an induction heater, the rotating disk drives the fixing mechanism to enter the bottom of the induction coil in turn, the rotating drive mechanism is located above the induction coil, the discharging drive mechanism is located below the rotating disk and corresponds to the induction coil, the discharging drive mechanism drives the supporting mechanism to release the support for the pin shaft, and the rotating drive mechanism comprises an elastically sliding and rotatable positioning sleeve II.

[0005] Preferably, the positioning sleeve I is provided with a plurality of sliding rods, the sliding rods are passed through the rotating seat, the rotating seat is rotatably provided on the rotating sleeve I, the lower ends of the sliding rods are provided with connecting heads, and the sliding rods between the connecting heads and the rotating seat are provided with springs I, and the two ends of the spring I are fixedly connected to the connecting head and the rotating seat respectively.

[0006] Preferably, the rotating disk is provided with through holes corresponding to and matching the connectors one by one.

[0007] Preferably, the support mechanism includes a support body, a sliding body, a spring II and a support rod. The inner end of the sliding body is provided with a support body located in the rotating sleeve I, the inner side wall of the rotating sleeve I is provided with a receiving groove that cooperates with the support body, the outer end of the sliding body is provided with a support rod, and a spring II is sleeved on the sliding body between the support rod and the rotating sleeve I, and the two ends of the spring II are fixedly connected to the support rod and the rotating sleeve I respectively.

[0008] Preferably, the discharging drive mechanism includes a cylinder, a support and a guide sleeve. The driving end of the cylinder is provided with a support, the support is provided with a guide sleeve, and the circumferential surface of the guide sleeve is a conical surface.

[0009] Preferably, the lifting mechanism is a ball screw linear slide.

[0010] Preferably, the rotation drive mechanism also includes a servo motor, a transmission mechanism, a rotating sleeve II, a push rod motor, a T-shaped clamping body, a plurality of guide rods, an annular body, a plurality of springs III, a slide groove and an anti-rotation body. The servo motor drives the rotating sleeve II to rotate through the transmission mechanism. The driving end of the push rod motor is provided with a T-shaped clamping body located in the rotating sleeve II. The circumference of the large diameter section of the T-shaped clamping body is provided with a slide groove. The inner side of the rotating sleeve II is provided with an anti-rotation body inserted into the slide groove. The large diameter section of the T-shaped clamping body is passed through a guide rod, the lower end of the guide rod is provided with an annular body, the lower end of the annular body is provided with a rotatable positioning sleeve II, the upper ends of the guide rods are provided with anti-slip bodies, and the guide rods between the annular body and the large diameter section of the T-shaped clamping body are provided with springs III.

[0011] Preferably, the transmission mechanism includes a driving pulley, a driven pulley and a synchronous belt, and the driving pulley and the driven pulley are provided with a synchronous belt.

[0012] Preferably, a stepping motor is further included, and a driving end of the stepping motor is fixedly connected to the rotating disk.

[0013] Beneficial effects of the present invention: The present invention drives the pin to rotate for induction heating through a rotary drive mechanism. The upper end of the rotating sleeve I is provided with an elastically sliding and rotatable positioning sleeve I. The rotary drive mechanism includes an elastically sliding and rotatable positioning sleeve II. The positioning sleeve I and the positioning sleeve II position the rotating pin to prevent the rotating pin from falling off. The positioning sleeve I and the positioning sleeve II can slide under the drive of the induction coil to separate from the pin to avoid affecting the heating operation of the induction coil. Compared with the existing technology, the hard zone layer depth and the uniformity of hardness distribution can be improved, and the adaptability is improved.

[0014] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0015] Figure 1 This is a schematic structural diagram of a heat treatment device for improving the depth uniformity of a pin hardening layer according to the present invention;

[0016] Figure 2 It is a partial side view of a heat treatment device for uniformity of the depth of the hardened layer of a pin according to the present invention;

[0017] Figure 3 It is a structural diagram of the rotary drive mechanism.

[0018] In the figure: 1-rotating disk, 2-fixing mechanism, 3-induction heater, 4-rotating drive mechanism, 5-discharging drive mechanism, 6-lifting mechanism, 7-pin shaft, 8-through hole, 9-stepping motor, 21-rotating sleeve I, 22-positioning sleeve I, 23-support mechanism, 24-sliding rod, 25-rotating seat, 26-connector, 27-spring I, 31-induction coil, 41-servo motor, 42-transmission mechanism, 43- Rotating sleeve II, 44-push rod motor, 45-T-shaped pressing body, 46-positioning sleeve II, 47-guide rod, 48-annular body, 49-spring III, 410-slide groove, 411-anti-rotation body, 421-driving pulley, 422-driven pulley, 423-synchronous belt, 51-cylinder, 52-support, 53-guide sleeve, 231-support body, 232-sliding body, 233-spring II, 234-support rod. [Specific implementation method]

[0019] See Figure 1 、 Figure 2 and Figure 3The present invention provides a heat treatment device for uniform depth of hardened layer of pin shaft, comprising a rotating disk 1, a plurality of fixing mechanisms 2, an induction heater 3, a rotary drive mechanism 4 and a discharging drive mechanism 5. The rotating disk 1 is provided with fixing mechanisms 2 arranged in a circumferential shape, the fixing mechanisms 2 comprising a rotating sleeve 121, a positioning sleeve 122 and a plurality of supporting mechanisms 23. The upper end of the rotating sleeve 121 is provided with an elastically sliding and rotatable positioning sleeve 122, the rotating sleeve 121 is provided with a supporting mechanism 23 for supporting the pin shaft 7 inserted into the positioning sleeve 122, a lifting mechanism 6 is provided on one side of the rotating disk 1, the lifting mechanism 6 is provided with an induction coil 31 of the induction heater 3, the rotating disk 1 drives the fixing mechanisms 2 to enter the induction coil 31 in turn. Below the coil 31, the rotary drive mechanism 4 is located above the induction coil 31, the discharging drive mechanism 5 is located below the rotating disk 1 and corresponds to the induction coil 31, the discharging drive mechanism 5 drives the support mechanism 23 to release the support for the pin shaft 7, the rotary drive mechanism 4 includes an elastic sliding and rotatable positioning sleeve II46, the positioning sleeve I22 is provided with a plurality of sliding rods 24, the sliding rods 24 are passed through the rotating seat 25, the rotating seat 25 is rotatably arranged on the rotating sleeve I21, the lower end of the sliding rod 24 is provided with a connecting head 26, the sliding rod 24 between the connecting head 26 and the rotating seat 25 is provided with a spring I27, the two ends of the spring I27 are respectively connected to the connecting head 26 and the rotating seat 25 The seat 25 is fixedly connected, and the rotating disk 1 is provided with a through hole 8 that corresponds to and cooperates with the connecting head 26. The supporting mechanism 23 includes a support body 231, a sliding body 232, a spring II233 and a support rod 234. The inner end of the sliding body 232 is provided with a support body 231 located in the rotating sleeve I21, and the inner side wall of the rotating sleeve I21 is provided with a receiving groove 29 that cooperates with the support body 231. The outer end of the sliding body 232 is provided with a support rod 234, and a spring II233 is provided on the sliding body 232 between the support rod 234 and the rotating sleeve I21. The two ends of the spring II233 are respectively fixedly connected to the support rod 234 and the rotating sleeve I21. The discharging drive mechanism 5 includes a cylinder 51, a support 52 and The guide sleeve 53 is provided at the driving end of the cylinder 51 with a support 52, and the support 52 is provided with a guide sleeve 53. The circumference of the guide sleeve 53 is a conical surface. The lifting mechanism 6 is a ball screw linear slide. The rotary drive mechanism 4 also includes a servo motor 41, a transmission mechanism 42, a rotating sleeve II43, a push rod motor 44, a T-shaped pressing body 45, a plurality of guide rods 47, an annular body 48, a plurality of springs III49, a slide groove 410 and an anti-rotation body 411. The servo motor 41 drives the rotating sleeve II43 to rotate through the transmission mechanism 42. The driving end of the push rod motor 44 is provided with a T-shaped pressing body 45 located in the rotating sleeve II43. The circumference of the large diameter section of the T-shaped pressing body 45 is provided with a slide groove 410.The inner side of the rotating sleeve II43 is provided with an anti-rotation body 411 inserted into the slide groove 410. The large diameter section of the T-shaped pressing body 45 is penetrated by a guide rod 47. The lower end of the guide rod 47 is provided with an annular body 48. The lower end of the annular body 48 is provided with a rotatable positioning sleeve II46. The upper end of each guide rod 47 is provided with an anti-slip body 412. The guide rod 47 between the annular body 48 and the large diameter section of the T-shaped pressing body 45 is provided with a spring III49. The transmission mechanism 42 includes a driving pulley 421, a driven pulley 422 and a synchronous belt 423. The driving pulley 421 and the driven pulley 422 are provided with a synchronous belt 423. It also includes a stepping motor 9. The driving end of the stepping motor 9 is fixedly connected to the rotating disk 1.

[0020] Working process of the present invention:

[0021] During operation, a heat treatment device for uniformity of the depth of the hardened layer of a pin shaft of the present invention is used. The pin shaft 7 is inserted into the positioning sleeve 122, and the stepping motor 9 is started to drive the rotating disk 1 to rotate step by step by an angle. The rotating disk 1 drives the fixing mechanism 2 to move, and the fixing mechanism 2 drives the pin shaft 7 thereon to enter under the induction coil 31. Then, the lifting mechanism 6 is started to drive the induction coil 31 to move downward. When the induction coil 31 is pressed against the positioning sleeve 122, the downward-moving induction coil 31 drives the positioning sleeve 122 to move downward. The positioning sleeve 122 drives the connecting head 26 to move downward through the sliding rod 24. The connecting head 26 stretches the spring 127. When the upper end of the positioning sleeve 122 is lower than the height of the lower end of the pin shaft 7, the lifting mechanism 6 stops working. During this process, the push rod motor 44 is started to push the T-shaped pressing body 45 to move downward and press it on the upper end of the pin shaft 7. Then the induction heater 3 and the servo motor 41 are started. The servo motor 41 drives the rotating sleeve II43 to rotate through the transmission mechanism 42. The rotating sleeve II43 drives the T-shaped pressing body 45 to rotate through the cooperation of the slide groove 410 and the anti-rotation body 411. The T-shaped pressing body 45 drives the pin shaft 7 to rotate, and the induction coil 31 is driven to move upward through the lifting mechanism 6 to heat the rotating pin shaft 7. When the induction coil 31 moves upward, the positioning sleeve I22 moves upward under the action of the spring I27, so that the positioning sleeve I22 is re-set on the pin shaft 7 to position it. When the ring 31 is against the positioning sleeve II46, the upward moving induction coil 31 drives the positioning sleeve II46 to move upward, and the positioning sleeve II46 compresses the spring III49 through the annular body 48. When the lower end of the induction coil 31 is higher than the upper end of the pin shaft 7, the lifting mechanism 6 stops working, and then the push rod motor 44 is started to pull the T-shaped pressing body 45 to move upward. When the T-shaped pressing body 45 contacts the anti-slip body 412, the upward moving T-shaped pressing body 45 drives the guide rod 47 to move upward through the anti-slip body 412. The guide rod 47 drives the positioning sleeve II46 to move upward and return to its original position through the annular body 48. Then the cylinder 51 is started to push the support 52 to move upward, and the support 52 drives the guide sleeve 53 to move upward. When the lower end of the support rod 234 is pressed against the circumferential surface of the guide sleeve 53, the upward moving guide sleeve 53 forces the support rod 234 to move away from the rotating sleeve I21, and the support rod 234 pulls the support body 231 completely into the corresponding receiving groove 29 through the sliding body 232. At this time, the support body 231 releases its support for the pin shaft 7, and the pin shaft 7 automatically falls through the rotating sleeve I21 and the guide sleeve 53, and finally falls into the quenching tank. Then the cylinder 51 is started to pull the support 52 downward, and the support 52 drives the guide sleeve 53 to move downward and return to its position. During this process, the spring II233 pulls the support rod 234, and the support rod 234 pushes the support body 231 through the sliding body 232 to be removed from the corresponding receiving groove 29 and return to the working position.

[0022] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A heat treatment device for uniform depth of hardened layer of pin, characterized by: The invention comprises a rotating disk (1), a plurality of fixing mechanisms (2), an induction heater (3), a rotation drive mechanism (4) and a discharge drive mechanism (5), wherein the rotating disk (1) is provided with fixing mechanisms (2) arranged at intervals in a circumferential shape, the fixing mechanisms (2) comprising a rotating sleeve I (21), a positioning sleeve I (22) and a plurality of supporting mechanisms (23), the upper end of the rotating sleeve I (21) is provided with an elastically sliding and rotatable positioning sleeve I (22), the rotating sleeve I (21) is provided with a supporting mechanism (23) for supporting a pin (7) inserted into the positioning sleeve I (22), a lifting mechanism (6) is provided on one side of the rotating disk (1), and the lifting mechanism (6) is provided with an induction coil ( 31), the rotating disk (1) drives the fixing mechanism (2) to sequentially enter the lower part of the induction coil (31), the rotating drive mechanism (4) is located above the induction coil (31), the discharging drive mechanism (5) is located below the rotating disk (1) and corresponds to the induction coil (31), the discharging drive mechanism (5) drives the supporting mechanism (23) to release the support for the pin shaft (7), the rotating drive mechanism (4) includes an elastic sliding and rotatable positioning sleeve II (46), the positioning sleeve I (22) is provided with a plurality of sliding rods (24), the sliding rods (24) are passed through the rotating seat (25), the rotating seat (25) is rotatably provided on the rotating sleeve I (21), and the sliding rods (24) are The lower end is provided with a connector (26), and a spring I (27) is sleeved on the sliding rod (24) between the connector (26) and the rotating seat (25). The two ends of the spring I (27) are fixedly connected to the connector (26) and the rotating seat (25), respectively. The rotation drive mechanism (4) also includes a servo motor (41), a transmission mechanism (42), a rotating sleeve II (43), a push rod motor (44), a T-shaped pressing body (45), a plurality of guide rods (47), an annular body (48), a plurality of springs III (49), a slide groove (410) and an anti-rotation body (411). The servo motor (41) drives the rotating sleeve II (43) to rotate through the transmission mechanism (42). The driving force of the push rod motor (44) is The movable end is provided with a T-shaped pressing body (45) located in the rotating sleeve II (43), the circumference of the large diameter section of the T-shaped pressing body (45) is provided with a slide groove (410), the inner side of the rotating sleeve II (43) is provided with an anti-rotation body (411) inserted into the slide groove (410), the large diameter section of the T-shaped pressing body (45) is passed through a guide rod (47), the lower end of the guide rod (47) is provided with an annular body (48), the lower end of the annular body (48) is provided with a rotatable positioning sleeve II (46), the upper end of each guide rod (47) is provided with an anti-slip body (412), and a spring III (49) is sleeved on the guide rod (47) between the annular body (48) and the large diameter section of the T-shaped pressing body (45).

2. The heat treatment equipment for improving the depth uniformity of the hardened layer of a pin according to claim 1, characterized in that: The rotating disk (1) is provided with through holes (8) that correspond one-to-one to and match the connectors (26).

3. The heat treatment equipment for uniformity of the depth of the hardened layer of a pin according to claim 1, characterized in that: The support mechanism (23) includes a support body (231), a sliding body (232), a spring II (233) and a support rod (234). The inner end of the sliding body (232) is provided with a support body (231) located in the rotating sleeve I (21). The inner side wall of the rotating sleeve I (21) is provided with a receiving groove (29) that matches the support body (231). The outer end of the sliding body (232) is provided with a support rod (234). The sliding body (232) between the support rod (234) and the rotating sleeve I (21) is provided with a spring II (233). The two ends of the spring II (233) are respectively fixedly connected to the support rod (234) and the rotating sleeve I (21).

4. The heat treatment equipment for improving the depth uniformity of the hardened layer of a pin according to claim 1, characterized in that: The discharging drive mechanism (5) comprises a cylinder (51), a support (52) and a guide sleeve (53). The drive end of the cylinder (51) is provided with a support (52), and the support (52) is provided with a guide sleeve (53). The peripheral surface of the guide sleeve (53) is a conical surface.

5. The heat treatment equipment for uniformity of the depth of the hardened layer of a pin according to claim 1, characterized in that: The lifting mechanism (6) is a ball screw linear slide.

6. The heat treatment equipment for uniformity of the depth of the hardened layer of a pin according to claim 1, characterized in that: The transmission mechanism (42) comprises a driving pulley (421), a driven pulley (422) and a synchronous belt (423), wherein the driving pulley (421) and the driven pulley (422) are provided with the synchronous belt (423).

7. The heat treatment equipment for uniformity of the depth of the hardened layer of a pin according to claim 1, characterized in that: It also includes a stepping motor (9), wherein a driving end of the stepping motor (9) is fixedly connected to the rotating disk (1).

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