Roller quenching device

Abstract

The invention relates to the technical field of quenching equipment, and particularly discloses a roller quenching device which comprises a support, a clamping mechanism and a quenching mechanism, the clamping mechanism comprises an upper tip, a lower tip and a driving mechanism for driving the upper tip to move in the vertical direction, and at least three sliding grooves are evenly formed in the lower tip at intervals in the circumferential direction of the lower tip; a sliding block is slidably connected into the sliding groove in the vertical direction, and a swing rod is rotationally connected to the sliding block. The periphery of the lower tip is sleeved with a sleeve, the sleeve is connected with a pushing block extending into the sliding groove, the support is provided with a driving assembly for driving the sleeve to move in the vertical direction, when the sleeve pushes the sliding block to move to the top end of the sliding groove, the swing rod inclines in the direction away from the central axis of the lower tip from the lower end to the upper end, and the sleeve and the lower tip limit rotation of the swing rod. According to the roller quenching device, automatic centering and positioning of the roller and the lower tip are achieved, manual observation is not needed for adjustment, the probability of safety accidents is reduced, and the working efficiency is improved compared with manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of quenching equipment, and in particular to a roller quenching device. Background Art

[0002] Roll quenching is a key process in roll heat treatment, which aims to improve the hardness and strength of the roll to meet the high load and wear resistance requirements during the rolling process.

[0003] A Chinese patent with announcement number CN217677641U discloses a roller quenching device, including an equipment mounting bracket, on which a roller positioning mechanism and a segmented quenching mechanism are provided, a top pressure positioning block B is provided below the roller positioning mechanism, and the roller positioning mechanism includes a positioning drive motor, a positioning drive lead screw, a positioning straight guide rail, a top pressure positioning block A, and a positioning block A. The positioning drive motor drives the positioning drive lead screw to rotate, driving the top pressure positioning block A to move up and down along the positioning straight guide rail, so that the positioning block A moves up and down. At the same time, the adjustment drive motor drives the top pressure position adjustment lead screw to rotate, driving the positioning block A to move left and right, and cooperates with the top pressure positioning block B to fix the roller vertically.

[0004] Due to the large size and weight of the roller, the roller is usually placed on the roller quenching equipment through a lifting device. The above patent vertically fixes the roller through the cooperation of the top pressure positioning block A and the top pressure positioning block B. However, when the roller is lifted between the top pressure positioning block A and the top pressure positioning block B, the lifted roller will shake, and it is necessary to manually align the roller above the top pressure positioning block B and align the center hole at the bottom of the roller with the tip of the top pressure positioning block B.

[0005] In the process of observing and adjusting the rollers, the workers need to be able to see the center hole at the bottom of the rollers. Therefore, the workers need to bend down and adjust their heads to the lower side of the rollers. The whole process of placing the rollers is not only cumbersome and tiring for the workers, but also causes great damage to the workers' heads when accidents occur during the lifting of the rollers, which is prone to safety accidents.

[0006] Therefore, there is a need in the art for a roll quenching device to solve the above problems. Summary of the invention

[0007] The present invention provides a roll quenching device, aiming to solve the problem that the roll quenching equipment in the related art needs manual centering and positioning of the roll and the top of the top positioning block, which leads to cumbersome operation and prone to safety accidents.

[0008] A roller quenching device of the present invention comprises a support, a clamping mechanism and a quenching mechanism arranged on the support, wherein the clamping mechanism comprises an upper center, a lower center and a driving mechanism for driving the upper center to move vertically, the lower center is provided with at least three slide grooves evenly spaced along its circumference, a slider is vertically slidably connected in the slide groove, and a swing rod is rotatably connected to the slider; The outer periphery of the lower top is provided with a coaxially arranged sleeve, the sleeve is fixedly connected with a push block extending into the slide groove, and a driving component for driving the sleeve to move vertically is provided on the bracket. When the sleeve pushes the sliding block to the top of the slide groove, the rocker arm is in a state of tilting from the lower end to the upper end in a direction away from the central axis of the lower top, and the sleeve and the lower top limit the rotation of the rocker arm.

[0009] When the roller is hoisted above the lower center and lowered, the bottom of the roller will first contact the rocker arm. Since the inclination angle of the rocker arm is the same, the bottom of the roller will slide downward along the rocker arm toward the side of the center axis of the lower center as the roller continues to be lowered. The rocker arm will adjust the position of the roller. When the bottom of the roller contacts all the rocker arms, the center hole at the bottom of the roller is aligned with the lower center, thereby realizing automatic centering and positioning of the roller and the lower center. No manual observation and adjustment is required, which reduces manual participation, reduces the probability of safety accidents, and improves work efficiency compared to manual operation.

[0010] Preferably, the slider is elastically connected to the slide groove along the vertical direction, and the rocker arm is slidably connected to an L-shaped positioning block along its axial direction. The L-shaped positioning block is elastically connected to the rocker arm along the axial direction of the rocker arm. When the slider is located at the top end of the slide groove, the L-shaped positioning block is located on the side of the rocker arm facing the lower top center axis.

[0011] In the process of lowering the roller, the bottom of the roller will first contact the L-shaped positioning block and squeeze the L-shaped positioning block to move downward along the rocker arm. During the downward movement of the L-shaped positioning block, the position of the roller is adjusted and centered. By setting the L-shaped positioning block, the bottom of the roller and the L-shaped positioning block move downward synchronously, reducing the wear caused by the roller sliding downward along the rocker arm and extending the service life of the rocker arm.

[0012] Preferably, a torsion spring is provided at the rotational connection between the swing arm and the slider, and when the swing arm is not subjected to external force, the torsion spring drives the swing arm to be in a horizontal state.

[0013] By arranging the torsion spring, when the sleeve moves downward to cancel the pushing of the slider and the swing rod, the slider and the swing rod can quickly move downward to break away from the contact with the roller, so as to avoid affecting the clamping of the roller.

[0014] Preferably, the L-shaped positioning block includes a fixedly connected positioning plate and a positioning support rod, the positioning plate is elastically connected to the rocker arm, when the rocker arm is in a horizontal state, the positioning support rod is located on the upper side of the positioning plate, the lower side of the positioning plate is an inclined surface, and a driving member for driving the lower top to rotate is provided on the bracket. When the lower top rotates, the positioning plate is driven to move, and the inclined surface of the positioning plate pushes the air to form an airflow, thereby sucking the mist generated by the quenching mechanism downward.

[0015] When the quenching mechanism starts to quench the roller, it is necessary to observe the positional relationship between the induction heating ring, the cooling quenching ring and the roller to prevent the induction heating ring and the cooling quenching ring from contacting the roller surface. However, a large amount of steam will be generated at the beginning of quenching, affecting the staff's observation. The air is pushed through the inclined surface of the positioning plate to form an airflow, and the mist generated by the quenching mechanism is sucked downward, making it easier for the staff to observe the relative position between the induction heating ring, the cooling quenching ring and the roller.

[0016] Preferably, the driving mechanism includes a screw 1 extending vertically and a motor 1 driving the screw 1 to rotate, the motor 1 is fixedly mounted on the bracket, the screw 1 is rotationally connected to the bracket and is fixedly connected to the driving end of the motor 1, the upper top is threadedly engaged with the screw 1 through a connecting block, a guide rod extending vertically is fixedly connected to the bracket, and the connecting block is slidingly engaged with the guide rod vertically.

[0017] Preferably, the driving assembly includes a mounting plate and a limiting assembly, the sleeve is fixedly connected to the mounting plate, the bottom of the mounting plate is elastically connected to the bracket, the mounting plate is rotatably connected with a ring, and a limiting structure is arranged between the ring and the ring, the ring is sleeved on the outer periphery of the screw, and the inside of the ring is provided with a protrusion that cooperates with the screw. When the limiting structure limits the relative rotation of the ring and the mounting plate, the screw drives the ring to drive the mounting plate to move upward until the sleeve pushes the slider to the top of the slide groove, and the limiting structure cancels the limitation on the ring and the mounting plate, and at the same time the limiting assembly limits the up and down movement of the mounting plate.

[0018] Preferably, the limit assembly includes a limit plate and a push assembly, the limit plate is elastically connected to the bracket in the horizontal direction, the limit plate and the mounting plate are respectively provided with wedge-shaped teeth on one side facing each other, when the mounting plate moves upward, the inclined surfaces of the wedge-shaped teeth squeeze each other, when the mounting plate moves downward, the wedge-shaped teeth interact with each other to limit the movement of the mounting plate, and the push assembly is used to push the limit plate to cancel the restriction of the limit plate on the mounting plate.

[0019] Preferably, the push assembly includes a mounting rod and a push rod slidably connected to the mounting plate, the mounting rod is elastically connected to the mounting plate in a horizontal direction, the push rod is connected to the mounting rod, and an inclined wedge surface is provided on the push rod. When the roller squeezes the L-shaped positioning block and moves downward along the rocker arm, the L-shaped positioning block squeezes the inclined wedge surface, driving the push rod to push the limit plate to move in a direction away from the mounting plate.

[0020] Preferably, an L-shaped stopper is provided on the bracket, and the L-shaped stopper slides with the bracket vertically and is elastically connected, and the L-shaped stopper is located on the side of the limit plate facing the mounting plate. When the push rod pushes the limit plate to a preset position, the L-shaped stopper pops out to block the limit plate from moving toward the mounting plate, and the limit structure cancels the limit between the collar and the mounting plate, and the mounting plate drives the sleeve to move downward, so that the sleeve cancels the push on the slider and the rocker arm.

[0021] Preferably, a push block located above the mounting plate is fixedly connected to the guide rod, and a push inclined surface is provided on the bottom of the push block close to the sleeve. When the mounting plate moves upward until the mounting rod contacts the push inclined surface, the push inclined surface squeezes the mounting rod to drive the push rod to move in a direction close to the sleeve. The mounting plate is slidably connected with an extrusion block, which is elastically connected to the mounting plate. The push block is slidably connected with a rack. The push rod is fixedly connected with a tooth block adapted to the rack. When the L-shaped positioning block extrudes the push rod, the push rod pushes the extrusion block to extrude the limit plate through the cooperation of the tooth block and the rack. The limiting structure includes a U-shaped seat slidably connected to the mounting plate and a limiting rod fixedly connected to the U-shaped seat. The mounting rod and the limiting rod are slidably matched along the front-back direction. A limiting hole matching the limiting rod is opened on the collar.

[0022] By arranging the extrusion block, the rack and the tooth block, when the push rod is squeezed, the thrust force received can be timely applied to the limit plate through the extrusion block, thereby shortening the movable stroke of the push rod when it needs to push the limit plate.

[0023] The beneficial effects of the present invention are as follows: by arranging a plurality of rocker arms with the same inclination angle, during the process of hoisting the rolling roller above the lower center and lowering it, the bottom of the rolling roller will first contact the rocker arm and slide downward along the rocker arm, and the rocker arm will adjust the position of the rolling roller until the bottom of the rolling roller contacts all the rocker arms, the center hole of the bottom of the rolling roller is aligned with the lower center, thereby realizing automatic centering and positioning of the rolling roller and the lower center, without the need for manual observation and adjustment, thereby reducing manual participation, reducing the probability of safety accidents, and improving work efficiency compared to manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a roller quenching device of the present invention.

[0025] Figure 2 It is a schematic diagram of the partial structure of a roll quenching device of the present invention.

[0026] Figure 3 The present invention is a schematic structural diagram of a lower center, a sleeve and a driving assembly of a roller quenching device.

[0027] Figure 4It is a structural schematic diagram of the lower center of a roller quenching device of the present invention.

[0028] Figure 5 The invention discloses an assembly diagram of a swing arm and an L-shaped positioning block of a roller quenching device.

[0029] Figure 6 It is a structural schematic diagram of a roller quenching device of the present invention when a swing arm rotates to a horizontal state.

[0030] Figure 7 The present invention is a schematic diagram of a mounting plate of a roller quenching device and a structure on the mounting plate.

[0031] Figure 8 It is a schematic diagram of a driving assembly when a swing arm of a roller quenching device of the present invention is in a horizontal state.

[0032] Reference numerals: 1. Bracket; 11. Lead screw 1; 12. Guide rod; 13. Lead screw 2; 14. Guide rod; 15. L-shaped stopper; 16. Push block; 17. Push ramp; 18. Rack; 21. Upper center; 22. Lower center; 221. Slide; 222. Slider; 223. Spring 1; 23. Connecting block; 3. Base; 31. Mounting block; 32. Induction heating coil; 33. Cooling and quenching coil; 34. Lead screw 3; 35. Handle; 4. Rocker; 40. Slide Rod; 41, positioning plate; 411, inclined surface; 42, positioning support rod; 43, spring two; 5, sleeve; 51, push block; 6, mounting plate; 61, spring three; 62, collar; 621, limiting hole; 63, extrusion block; 64, spring seven; 7, limiting plate; 71, wedge-shaped tooth; 8, mounting rod; 80, spring five; 81, push rod; 82, spring six; 83, inclined wedge surface; 84, tooth block; 9, U-shaped seat; 91, limiting rod; 10, roller. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 8As shown, a roll quenching device of the present invention comprises a support 1, a clamping mechanism and a quenching mechanism arranged on the support 1, the clamping mechanism comprises an upper top 21, a lower top 22 and a driving mechanism for driving the upper top 21 to move vertically, the driving mechanism comprises a lead screw 11 extending vertically and a motor 1 (not shown in the figure) for driving the lead screw 11 to rotate, the motor 1 is fixedly mounted on the support 1, the lead screw 11 is rotatably connected to the support 1, and is fixedly connected to the driving end of the motor 1, the upper top 21 is threadedly matched with the lead screw 11 through a connecting block 23, a guide rod 12 extending vertically is fixedly connected to the support 1, and the connecting block 23 is slidably matched with the guide rod 12 vertically. The motor 1 drives the lead screw 11 to rotate, and the lead screw 11 drives the connecting block 23 and the upper top 21 to move up and down, so as to cooperate with the lower top 22 to clamp and fix the roll 10 or cancel the clamping of the roll 10.

[0035] The quenching mechanism includes a base 3, a mounting block 31, an induction heating coil 32 and a cooling quenching coil 33. The base 3 is located on the left side of the clamping mechanism. The mounting block 31 is slidably connected to the base 3 along the front-back direction. The induction heating coil 32 and the cooling quenching coil 33 are installed on the mounting block 31, and the cooling quenching coil 33 is located below the induction heating coil 32. The bracket 1 is provided with a motor 2 (not shown in the figure), a lead screw 2 13 fixedly connected to the driving end of the motor 2, and a guide rod 14 fixedly installed on the bracket 1. The base 3 is vertically slidably connected to the guide rod 14 and is threadedly matched with the lead screw 2 13. The motor 2 drives the lead screw 2 13 to rotate, and the lead screw 2 13 drives the base 3 to move up and down. The base 3 drives the mounting block 31 to move up and down. The induction heating coil 32 and the cooling quenching coil 33 on the mounting block 31 move upward along the outer circumference of the roller 10 to quench the roller 10.

[0036] A lead screw 34 extending in the front-to-back direction is rotatably connected to the base 3, the mounting block 31 is threadedly matched with the lead screw 34, and a handle 35 is fixedly connected to the front end of the lead screw 34. The lead screw 34 is rotated by screwing the handle 35, and the lead screw 34 drives the mounting block 31 to drive the induction heating coil 32 and the cooling quenching coil 33 to move forward and backward, so as to adjust the position of the induction heating coil 32 and the cooling quenching coil 33 so that the induction heating coil 32 and the cooling quenching coil 33 are adapted to the position of the rolling roller 10.

[0037] like Figures 3 to 5 as well as Figure 7As shown, in order to facilitate the centering and positioning of the roller 10, in this embodiment, the lower top 22 is evenly provided with four chute grooves 221 along its circumferential direction, and a slider 222 is vertically slidably connected in the chute 221, and a swing rod 4 is rotatably connected to the slider 222. The outer periphery of the lower top 22 is sleeved with a coaxially arranged sleeve 5, and the sleeve 5 is fixedly connected with a push block 51 extending into the chute 221, and the upper end surface of the sleeve 5 is an inverted conical surface inclined downward from the outer periphery to the inner periphery. A driving component for driving the sleeve 5 to move vertically is provided on the bracket 1. When the driving component drives the sleeve 5 to push the slider 222 upward to move to the top of the chute 221, the swing rod 4 is in a state of being inclined from the lower end to the upper end in a direction away from the central axis of the lower top 22, and the sleeve 5 and the lower top 22 restrict the swing rod 4 from rotating.

[0038] When the roller 10 is hoisted above the lower center 22 and lowered, the bottom of the roller 10 will first contact the rocker arm 4. Since the four rocker arms 4 have the same inclination angle, the bottom of the roller 10 will slide downward along the rocker arm 4 toward one side of the central axis of the lower center 22 as the roller 10 continues to be lowered. The rocker arm 4 will adjust the position of the roller 10. When the bottom of the roller 10 contacts all four rocker arms 4, the center hole at the bottom of the roller 10 is aligned with the lower center 22, thereby realizing automatic centering and positioning of the roller 10 and the lower center 22. No manual observation and adjustment are required, which reduces manual participation, reduces the probability of safety accidents, and improves work efficiency compared to manual operation.

[0039] The bottom of the slider 222 is elastically connected to the slide slot 221 through a spring 1 223. The rocker 4 is slidably connected to an L-shaped positioning block along its axial direction, and the L-shaped positioning block includes a positioning plate 41 and a positioning support rod 42 that are fixedly connected. The rocker 4 is fixedly connected to a slide bar 40 extending along its axial direction, and the positioning plate 41 of the L-shaped positioning block is slidably connected to the slide bar 40, and the side of the positioning plate 41 close to the slider 222 is elastically connected to the rocker 4 through a spring 2 43, and the spring 2 43 is sleeved on the outer periphery of the slide bar 40. When the slider 222 is located at the top of the slide slot 221, the L-shaped positioning block is located on the side of the rocker 4 facing the central axis of the lower top 22, and the positioning support rod 42 is located on the side of the positioning plate 41 facing the central axis of the lower top 22.

[0040] During the process of lowering the rolling roller 10, the bottom of the rolling roller 10 will first contact the L-shaped positioning block and squeeze the L-shaped positioning block to move downward along the rocker arm 4. During the downward movement of the L-shaped positioning block, the position of the rolling roller 10 is adjusted and centered. By setting the L-shaped positioning block, the bottom of the rolling roller 10 and the L-shaped positioning block can move downward synchronously, thereby reducing the wear caused by the rolling roller 10 sliding downward along the rocker arm 4 and extending the service life of the rocker arm 4.

[0041] When the quenching mechanism starts to quench the roller 10, it is necessary to observe the positional relationship between the induction heating ring 32 and the cooling quenching ring 33 and the roller 10 to prevent the induction heating ring 32 and the cooling quenching ring 33 from contacting the surface of the roller 10. However, when quenching starts, a large amount of steam will be generated, which will affect the observation of the staff. Therefore, in this embodiment, a torsion spring (not shown in the figure) is provided at the rotation connection between the swing rod 4 and the slider 222. When the swing rod 4 is not subjected to external force, the torsion spring drives the swing rod 4 to be in a horizontal state, such as Figure 6 As shown. The lower side of the positioning plate 41 is an inclined surface 411. The bracket 1 is provided with a driving member (not shown in the figure) for driving the lower center 22 to rotate. As an example, the driving member is a driving motor. When the lower center 22 rotates, the positioning plate 41 is driven to move. The inclined surface 411 of the positioning plate 41 pushes the air to form an airflow, and the mist generated by the quenching mechanism is sucked downward, so that the staff can observe the relative position between the induction heating ring 32 and the cooling quenching ring 33 and the roller 10.

[0042] like Figure 3 , Figure 7 and Figure 8 As shown, the driving assembly includes a mounting plate 6 and a limiting assembly, the sleeve 5 is fixedly connected to the mounting plate 6, the bottom of the mounting plate 6 is elastically connected to the bracket 1 through a spring 3 61, the mounting plate 6 is rotatably connected with a collar 62, and a limiting structure is arranged between the collar 62 and the collar 62, the collar 62 is sleeved on the outer periphery of the lead screw 11, and the collar 62 is provided with a convex block (not shown in the figure) that cooperates with the lead screw 11. When the limiting structure limits the relative rotation of the collar 62 and the mounting plate 6, the lead screw 11 drives the collar 62 to drive the mounting plate 6 to move upward, until the sleeve 5 pushes the slider 222 to the top of the slide groove 221, the limiting structure cancels the limiting of the collar 62 and the mounting plate 6, and the limiting assembly limits the up and down movement of the mounting plate 6, so that the sleeve 5 limits the current position of the slider 222 and the swing rod 4, which is convenient for the swing rod 4 to center the roller 10, and at the same time does not affect the continued rotation of the lead screw 11 to drive the top 21 downward to clamp the roller 10.

[0043] After the centering positioning is completed and the roller 10 needs to be clamped, the control limit assembly cancels the limit on the mounting plate 6. Since the limit structure also cancels the limit between the ring 62 and the mounting plate 6 at this time, the mounting plate 6 will drive the sleeve 5 to move downward under the pulling force of the spring three 61, and the slider 222 and the rocker arm 4 lose the squeezing of the sleeve 5. The slider 222 will drive the rocker arm 4 to move downward under the elastic force of the spring one 223, and the rocker arm 4 will rotate outward and open to a horizontal state under the action of the torsion spring, preparing for the subsequent rotation to suck steam.

[0044] like Figures 6 to 8As shown, the limiting assembly includes a limiting plate 7 and a pushing assembly. The limiting plate 7 is elastically connected to the bracket 1 along the front-to-back direction through a spring 4. The limiting plate 7 and the mounting plate 6 are respectively provided with wedge-shaped teeth 71 on one side facing each other. When the mounting plate 6 moves upward, the wedge-shaped teeth 71 on the mounting plate 6 squeeze the inclined surface of the wedge-shaped teeth 71 on the limiting plate 7, so that the limiting plate 7 moves backward, providing a way for the mounting plate 6 to move upward. When the mounting plate 6 moves downward, the wedge-shaped teeth 71 on the limiting plate 7 block the wedge-shaped teeth 71 on the mounting plate 6, limiting the mounting plate 6 from moving downward, so that the sleeve 5 forms a limit on the current position of the slider 222 and the swing rod 4.

[0045] When it is necessary to release the restriction of the limiting plate 7 on the mounting plate 6, the limiting plate 7 is pushed backward by the pushing assembly, so that the wedge-shaped teeth 71 on the limiting plate 7 are disengaged from the wedge-shaped teeth 71 on the mounting plate 6, and the mounting plate 6 moves downward and resets under the pulling force of the spring three 61.

[0046] The push assembly includes a mounting rod 8 and a push rod 81 which are slidably connected to the mounting plate 6 in the front-to-back direction. The mounting rod 8 is elastically connected to the mounting plate 6 in the front-to-back direction through a spring 5 80. The push rod 81 is slidably matched with the mounting rod 8 in the front-to-back direction and elastically connected to the mounting rod 8 through a spring 6 82. An inclined wedge surface 83 is provided at the front end of the push rod 81. When the roller 10 squeezes the L-shaped positioning block and moves downward along the swing rod 4, the L-shaped positioning block squeezes the inclined wedge surface 83, driving the push rod 81 to push the limit plate 7 to move in a direction away from the mounting plate 6.

[0047] The bracket 1 is provided with an L-shaped stopper 15, which slides with the bracket 1 vertically and is elastically connected to the bracket 1 through a spring 8 (not shown in the figure). The L-shaped stopper 15 is located at the front side of the limit plate 7. When the push rod 81 pushes the limit plate 7 to the preset position, the L-shaped stopper 15 pops out to block the limit plate 7 from moving forward, so that the mounting plate 6 can fall to the initial position. During the downward movement of the mounting plate 6, it will contact the top of the L-shaped stopper 15 and squeeze the L-shaped stopper 15 to move downward, thereby canceling the limit of the limit plate 7 by the L-shaped stopper 15, and the limit plate 7 will automatically pop out and wait for the next limit of the mounting plate 6.

[0048] A push block 16 located above the mounting plate 6 is fixedly connected to the guide rod 12, and a push slope 17 is provided at the bottom of the push block 16 near the front end. When the mounting plate 6 moves upward until the mounting rod 8 contacts the push slope 17, the push slope 17 squeezes the mounting rod 8 and drives the push rod 81 to move toward the direction close to the sleeve 5, which is beneficial for the L-shaped positioning block to contact the push rod 81. When the mounting plate 6 moves downward, the mounting rod 8 returns to its initial position under the action of the spring five 80, thereby making the push rod 81 away from the rocker arm 4 to prevent the push rod 81 from interfering with the rotation of the rocker arm 4.

[0049] The mounting plate 6 is slidably connected with a pressing block 63 in the front-back direction. The pressing block 63 is elastically connected with the mounting plate 6 through a spring 7 64. When the pressing block 63 is not subjected to external force, the pressing block 63 contacts the end of the wedge-shaped tooth 71 on the limiting plate 7. The push block 16 is slidably connected with a rack 18. The push rod 81 is fixedly connected with a tooth block 84 adapted to the rack 18. When the L-shaped positioning block presses the push rod 81, the push rod 81 pushes the pressing block 63 to press the limiting plate 7 through the cooperation of the tooth block 84 and the rack 18. By providing the pressing block 63, the rack 18 and the tooth block 84, when the push rod 81 is pressed, the pressing force received can be timely applied to the limiting plate 7 through the pressing block 63, thereby shortening the movable stroke of the push rod 81 when it needs to push the limiting plate 7.

[0050] The limiting structure includes a U-shaped seat 9 slidably connected to the mounting plate 6 along the front-back direction and a limiting rod 91 fixedly connected to the U-shaped seat 9, and the mounting rod 8 and the limiting rod 91 are slidably matched along the front-back direction. A limiting hole 621 adapted to the limiting rod 91 is provided on the collar 62. When the mounting plate 6 moves upward until the mounting rod 8 contacts the push-up inclined surface 17, and the push-up inclined surface 17 squeezes the mounting rod 8 to move in the direction close to the sleeve 5, the mounting rod 8 moves forward along the limiting rod 91, and when the mounting rod 8 contacts the U-shaped seat 9, the mounting rod 8 drives the U-shaped seat 9 and the limiting rod 91 to move forward, and the limiting rod 91 comes out of the limiting hole 621, canceling the limiting between the collar 62 and the mounting plate 6. When the mounting plate 6 moves downward and resets, the mounting rod 8 moves backward along the limiting rod 91 under the action of the spring 5 80. When the mounting rod 8 contacts the U-shaped seat 9, the U-shaped seat 9 and the limiting rod 91 move backward, and the limiting rod 91 is inserted into the limiting hole 621, so that when the screw 11 rotates, the mounting plate 6 is driven to move upward through the collar 62.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A roller quenching device, comprising a bracket, a clamping mechanism arranged on the bracket and a quenching mechanism, wherein the clamping mechanism comprises an upper center, a lower center and a driving mechanism for driving the upper center to move vertically, characterized in that: The lower top is provided with at least three slide grooves evenly spaced along its circumference, a slider is vertically slidably connected in the slide groove, and a swing rod is rotatably connected to the slider; The outer periphery of the lower top is provided with a coaxially arranged sleeve, the sleeve is fixedly connected with a push block extending into the slide groove, and a driving component for driving the sleeve to move vertically is provided on the bracket. When the sleeve pushes the sliding block to the top of the slide groove, the rocker arm is in a state of tilting from the lower end to the upper end in a direction away from the central axis of the lower top, and the sleeve and the lower top limit the rotation of the rocker arm.

2. The roll quenching device according to claim 1, characterized in that: The slider is elastically connected to the slide groove along the vertical direction, and the rocker arm is slidably connected with an L-shaped positioning block along its axial direction. The L-shaped positioning block is elastically connected to the rocker arm along the axial direction of the rocker arm. When the slider is located at the top end of the slide groove, the L-shaped positioning block is located on the side of the rocker arm facing the lower top center axis.

3. The roll quenching device according to claim 2, characterized in that: A torsion spring is provided at the rotation connection between the swing rod and the slider. When the swing rod is not acted upon by external force, the torsion spring drives the swing rod to be in a horizontal state.

4. The roll quenching device according to claim 3, characterized in that: The L-shaped positioning block includes a fixedly connected positioning plate and a positioning support rod. The positioning plate is elastically connected to the rocker arm. When the rocker arm is in a horizontal state, the positioning support rod is located on the upper side of the positioning plate. The lower side of the positioning plate is an inclined surface. A driving member for driving the lower top to rotate is provided on the bracket. When the lower top rotates, the positioning plate is driven to move. The inclined surface of the positioning plate pushes the air to form an airflow, thereby sucking the mist generated by the quenching mechanism downward.

5. The roll quenching device according to claim 4, characterized in that: The driving mechanism includes a lead screw 1 extending vertically and a motor 1 driving the lead screw 1 to rotate. The motor 1 is fixedly installed on the bracket. The lead screw 1 is rotatably connected to the bracket and is fixedly connected to the driving end of the motor 1. The upper top is threadedly engaged with the lead screw 1 through a connecting block. A guide rod extending vertically is fixedly connected to the bracket, and the connecting block is slidably engaged with the guide rod vertically.

6. The roll quenching device according to claim 5, characterized in that: The driving assembly includes a mounting plate and a limiting assembly. The sleeve is fixedly connected to the mounting plate. The bottom of the mounting plate is elastically connected to the bracket. The mounting plate is rotatably connected with a collar, and a limiting structure is arranged between the collar and the collar. The collar is sleeved on the outer periphery of a lead screw, and a protrusion cooperating with a lead screw is arranged inside the collar. When the limiting structure limits the relative rotation of the collar and the mounting plate, the lead screw drives the collar to drive the mounting plate to move upward until the sleeve pushes the slider to the top of the slide groove. The limiting structure cancels the limitation on the collar and the mounting plate, and at the same time the limiting assembly limits the upward and downward movement of the mounting plate.

7. The roll quenching device according to claim 6, characterized in that: The limiting assembly includes a limiting plate and a pushing assembly. The limiting plate is elastically connected to the bracket in the horizontal direction. The limiting plate and the mounting plate are respectively provided with wedge-shaped teeth on one side facing each other. When the mounting plate moves upward, the inclined surfaces of the wedge-shaped teeth squeeze each other. When the mounting plate moves downward, the wedge-shaped teeth interact with each other to limit the movement of the mounting plate. The pushing assembly is used to push the limiting plate to cancel the restriction of the limiting plate on the mounting plate.

8. The roll quenching device according to claim 7, characterized in that: The push assembly includes a mounting rod and a push rod which are slidably connected to the mounting plate. The mounting rod is elastically connected to the mounting plate in a horizontal direction. The push rod is connected to the mounting rod, and an inclined wedge surface is provided on the push rod. When the roller squeezes the L-shaped positioning block and moves downward along the rocker arm, the L-shaped positioning block squeezes the inclined wedge surface, driving the push rod to push the limit plate to move in a direction away from the mounting plate.

9. The roll quenching device according to claim 8, characterized in that: An L-shaped stopper is provided on the bracket, which slides with the bracket vertically and is elastically connected. The L-shaped stopper is located on the side of the limit plate facing the mounting plate. When the push rod pushes the limit plate to a preset position, the L-shaped stopper pops out to prevent the limit plate from moving toward the mounting plate. The limit structure cancels the limit between the collar and the mounting plate, and the mounting plate drives the sleeve to move downward, so that the sleeve cancels the push on the slider and the rocker arm.

10. The roll quenching device according to claim 9, characterized in that: The guide rod is fixedly connected with a push block located above the mounting plate, and a push inclined surface is arranged on the bottom of the push block close to the sleeve. When the mounting plate moves upward until the mounting rod contacts the push inclined surface, the push inclined surface squeezes the mounting rod and drives the push rod to move in a direction close to the sleeve. The mounting plate is slidably connected with an extrusion block, which is elastically connected to the mounting plate. The push block is slidably connected with a rack. The push rod is fixedly connected with a tooth block adapted to the rack. When the L-shaped positioning block extrudes the push rod, the push rod pushes the extrusion block to extrude the limit plate through the cooperation of the tooth block and the rack. The limiting structure includes a U-shaped seat slidably connected to the mounting plate and a limiting rod fixedly connected to the U-shaped seat. The mounting rod and the limiting rod are slidably matched along the front-back direction. A limiting hole matching the limiting rod is opened on the collar.

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