Quenching device and method for stainless steel pipe machining

Abstract

The invention relates to the technical field of quenching, and particularly discloses a quenching device and method for stainless steel pipe machining. The quenching device comprises a bottom box, a quenching box is fixedly installed above the bottom box, one side of the quenching box is open and provided with a sealing door, the sealing door is movably connected with the quenching box, and the end, close to the quenching box, of the bottom of the sealing door is connected with a base; a turntable is rotationally mounted on the base, a plurality of fixing cones are arranged around the top of the turntable, and a to-be-quenched pipe fitting is sleeved on the fixing cones. Through the arrangement of the outer ring and the inner ring, synchronous fixing of a plurality of pipe fittings is achieved, rotation of the driving disc pushes the extrusion pieces to evenly expand outwards along the sliding grooves, and the extrusion pieces can be reset in combination with the elasticity of the springs; through sliding constraint of the limiting blocks and the limiting grooves, it is guaranteed that deviation does not occur in the extrusion process, the outer ring provides reverse supporting to form clamping force, the clamping safety of the thin-wall pipe fitting is remarkably improved through the design, and the device is particularly suitable for quenching of stainless steel pipes prone to deformation.

Description

TECHNICAL FIELD

[0001] The application relates to the quenching technical field, in particular to a quenching device and method for stainless steel pipe machining. BACKGROUND

[0002] The quenching device for stainless steel pipe machining is an equipment for rapid cooling heat treatment of stainless steel pipes, aiming to improve the hardness, strength and wear resistance of the steel pipes through rapid cooling (such as water, oil or gas medium) after high-temperature heating; modern devices usually adopt automatic design to improve efficiency, such as realizing continuous feeding and discharging through a rotary bearing filter frame, or reducing manual intervention by combining with a transmission roller and an automatic discharging mechanism; some devices also integrate temperature control systems (such as infrared sensors) and remote monitoring functions to optimize quenching process parameters and avoid the influence of water temperature rise on cooling effect; in addition, for different materials (such as 304 or 316L stainless steel pipes), the device may adopt graded quenching, vacuum oil quenching or gas quenching technology to reduce deformation and surface defects; overall, such devices take into account efficiency, precision and operation convenience through mechanical structure and process innovation.

[0003] For example, the prior art with publication number CN117210670 discloses an immersion quenching cooling device for continuous pipes, which comprises a quenching mechanism and a quenching cooling box, and further comprises a settling water tank and a quenching tank base; the settling water tank is arranged below the quenching tank base, the quenching tank base is provided with a quenching tank lifting mechanism, the quenching cooling box is supported by the quenching tank lifting mechanism and can displace up and down, an integral pipe lifting mechanism is arranged above the quenching cooling box, the integral pipe lifting mechanism bears the quenching assembly and can drive the quenching assembly to adjust the height within the range of the quenching cooling box. The present application can realize online quenching of the whole continuous pipe.

[0004] Temperature control of quenching oil is a key parameter in heat treatment process, which directly affects the cooling speed, hardness and deformation degree of workpieces. The following is a specific analysis of the temperature requirements of quenching oil, which combines the specifications of different quenching oil types and application scenarios: General temperature range: the use temperature of quenching oil is usually controlled between 20℃~80℃, but it needs to be adjusted according to the type of oil and process requirements.

[0005] Both too high and too low temperatures will affect the cooling performance: Too high temperature (such as >80℃): it will reduce the characteristic temperature of the oil (vapor film rupture temperature), resulting in a decrease in cooling capacity in the high-temperature zone, and accelerating the oxidation and deterioration of the oil.

[0006] Too low temperature (such as <20℃): the viscosity of the oil is too high, and the flowability is poor, which slows down the cooling speed and increases the loss of workpieces with oil.

[0007] In order to ensure that the quenching oil temperature is uniformly distributed, the prior art generally provides a stirring device in the inside of the quenching box, but there are defects: when the quenching parts are put into the quenching oil, the stirring device can only stir the oil around the parts, and the oil close to the parts cannot be effectively stirred, and the quenching oil temperature at this position will be significantly higher under the high temperature transmission of the parts, thus affecting the temperature requirement of quenching and reducing the physical properties of the parts. SUMMARY

[0008] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0009] The present application provides a quenching device and method for stainless steel pipe machining, which can solve the problem of uneven distribution of quenching oil temperature, and the specific scheme is as follows: In one aspect, the present application provides a quenching device for stainless steel pipe machining, comprising a bottom box, a quenching box is fixedly installed above the bottom box, one side of the quenching box is designed to be open and is provided with a sealing door, the sealing door is movably connected with the quenching box, a base is connected to one end of the sealing door close to the quenching box, a rotating disc is rotatably installed on the base, a plurality of fixed cones are provided around the top of the rotating disc, and the pipe fittings to be quenched are sleeved on the fixed cones; by providing the fixed cones on the rotating disc, the inter-cone gap cooperates with the double downspout structure to form a three-dimensional drainage gap, the quenching oil can directly pass through the inter-cone gap along the inner wall of the pipe fitting, and the quenching oil can be efficiently guided through the first downspout and the second downspout, avoiding oil retention and avoiding oil film residue on the surface of the rotating disc, reducing the subsequent pipe cleaning process, and ensuring that the quenching oil quickly returns to the bottom box to maintain oil temperature stability; The top of the plurality of pipe fittings is provided with a clamp, the clamp is used for clamping the plurality of pipe fittings at the same time, one end of the clamp is provided with a sliding block, one side of the sliding block is provided with a sliding seat, the sliding block and the sliding seat are slidably connected, the sliding seat and one side of the sealing door are slidably connected, a first telescopic assembly is installed between the sliding block and the sliding seat, and a second telescopic assembly is installed between the sliding seat and the sealing door; The sliding block and the clamp are hingedly connected, the bottom of the sliding block and the clamp are connected through a rotating assembly, the rotating assembly is used for driving the clamp to rotate, so that the plurality of pipe fittings on the clamp are slid to the outside of the sealing door; By providing the outer ring and the inner ring, the synchronous fixing of the plurality of pipe fittings is realized, the rotation of the driving disc pushes the extrusion piece to uniformly expand along the sliding groove, and the elasticity of the spring can reset; the sliding constraint of the limiting block and the limiting groove ensures that the extrusion process does not deviate, the outer ring provides reverse support to form clamping force, and this design significantly improves the clamping safety of thin-walled pipe fittings, and is especially suitable for quenching of stainless steel pipes which are prone to deformation.

[0010] Preferably, the clamp comprises an outer ring and an inner ring, a plurality of pipe fittings are located between the outer ring and the inner ring, the inner part of the inner ring is provided with a pressing piece, and the pressing piece expands outward to abut the pipe fittings against the inner side of the outer ring.

[0011] Preferably, the number of pressing pieces matches the number of pipe fittings, a plurality of pressing pieces are slidingly installed on the side wall of the inner ring, the inner side of the plurality of pressing pieces is provided with a driving disc, the bottom of the driving disc is provided with a first motor, the first motor is fixedly installed at the bottom of the inner ring, and the output shaft of the first motor is fixedly connected with the bottom of the driving disc.

[0012] Preferably, the first telescopic assembly comprises a winding roller, the winding roller is rotatably installed in the sealing door, one end of the winding roller is provided with a second motor, and the winding roller is provided with a winding rope, the winding rope penetrates from the bottom of the sliding seat to the top side of the sliding seat and is fixedly connected with the top of the sliding block, the winding direction of the winding roller is controlled through the second motor, the winding rope is retracted or extended, and thus the lifting of the sliding block is controlled.

[0013] Preferably, the second telescopic assembly comprises a gear and a rack, the gear is rotatably installed in the inner part of the sealing door, the rack is fixedly connected on one side of the sliding seat, the gear is engaged with the rack, one end of the gear is provided with a third motor, and the gear is driven to rotate through the third motor, so as to drive the rack and the sliding seat to move up and down.

[0014] Preferably, the sliding block and the outer ring are hingedly connected through a hinge, the rotating assembly comprises an arc-shaped rod and an arc-shaped sleeve, the arc-shaped rod is fixedly connected at the bottom of the sliding block, the arc-shaped sleeve is fixedly connected to the outer wall of the outer ring, the arc-shaped rod is slidingly connected with the arc-shaped sleeve, one side of the outer ring is further provided with an arc-shaped hole, the arc-shaped hole is located on the extension line of the arc-shaped sleeve, an extrusion cavity is formed in the inner part of the outer ring, the extrusion cavity is communicated with the arc-shaped hole through a communication hole, a first telescopic piece is fixedly connected to the inner wall of the extrusion cavity, a piston is connected to the telescopic end of the first telescopic piece, and the piston is sealingly and slidingly connected with the extrusion cavity; through the two-stage telescopic combination of the sliding block and the sliding seat and the rotating assembly, the clamp can be adjusted in multiple degrees of freedom in space, the pipe fittings can be completely immersed in deep oil during quenching, the pipe fittings can be moved out of the quenching tank to the operation area after quenching, the piston is controlled to extend or retract through the communication hole, the arc-shaped sleeve is driven to slide through the air pressure, so that the clamp and the pipe fittings are rotated, and then the pipe fittings are moved to the outside of the sealing door.

[0015] Preferably, the inner wall of the quenching box is provided with a discharge port at the bottom, the top end of the discharge port is flush with the bottom end of the base, when the sealing door is completely closed, the base covers the discharge port, the outer wall of the quenching box is connected with a feeding pipe, the bottom of the feeding pipe is connected with one end of the bottom box, and the middle part of the feeding pipe is fixedly installed with a circulating pump, when the sealing door is opened, the base is separated from the top end of the discharge port, so that the quenching oil in the quenching box flows into the bottom box; when the sealing door is closed, the base accurately covers the discharge port to form a seal, and the guidance of the roller ensures the closing accuracy, when the sealing door is opened, the base is separated from the discharge port, so that the waste oil automatically flows into the bottom box, the circulating pump pumps the quenching oil back to the quenching box through the feeding pipe, and a closed-loop oil circuit is formed, so that the quenching oil can be in contact with the cold air outside, and the heat dissipation efficiency is improved.

[0016] Preferably, a plurality of evenly distributed meshing grooves are arranged around the bottom of the rotating disc, a driving rod is arranged on one side of the rotating disc, a fourth motor is installed at one end of the driving rod, a driving wheel is connected to the end of the driving rod close to the rotating disc, a plurality of evenly distributed meshing balls are connected around the driving wheel, the meshing balls are engaged with the meshing grooves, the driving wheel drives the rotating disc to rotate at a constant speed through the meshing transmission of the meshing balls and the meshing grooves, so that the clamped pipe is formed in a radial stirring force field in the quenching box, the pipe continuously disturbs the quenching oil during rotation, avoids temperature stratification and accelerates heat exchange, eliminates the temperature difference between the edge and the center area of the quenching box, and compared with the traditional static quenching, the design can reduce the fluctuation range of the surface hardness of the pipe, and especially ensures the uniformity of the surface cooling of the large-size pipe.

[0017] Preferably, a second telescopic part is fixedly installed at the bottom of the quenching box, the telescopic end of the second telescopic part is fixedly connected with the bottom of the sealing door, a roller is installed at the bottom of the sealing door, and the roller rolls on the inner wall of the bottom box.

[0018] On the other hand, the application provides a quenching method for stainless steel pipe machining, comprising the following steps: S1, pipe positioning and clamping: a plurality of stainless steel pipes to be processed are respectively sleeved on the fixed cones distributed circumferentially on the rotating disc; S2, synchronous locking of the top of the pipe: the first telescopic assembly and the second telescopic assembly are operated to drive the sliding block and the sliding seat to slide to the lowermost end of the sealing door, so that the clamp hinged to the sliding block simultaneously presses all the top ends of the pipes; S3, sealing quenching: the sealing door movably connected to the open side of the quenching box is closed, so that the rotating disc with the sleeved pipes enters the quenching box to perform the quenching process; S4, pipe moving out and angle adjusting: The second telescopic part drives the sealing door to slide, and the pipes are taken out of the quenching box; The first telescopic assembly and the second telescopic assembly respectively drive the sliding block and the sliding seat to slide upward along the sealing door, drive the clamp and the clamped pipe group to synchronously move out of the quenching box; The rotation assembly drives the clamp to rotate relative to the slider, so that the pipe assembly after moving out changes from a vertical state to an inclined state for unloading.

[0019] Compared with the prior art, the present application can achieve at least one of the following beneficial effects: 1、The outer ring and the inner ring are arranged to realize the synchronous fixing of a plurality of pipe fittings, the rotation of the driving disc pushes the extrusion part to uniformly expand along the sliding groove, and the elasticity of the spring can reset; the sliding constraint of the limiting block and the limiting groove ensures that the extrusion process does not deviate, the outer ring provides reverse support to form clamping force, and the design significantly improves the clamping safety of thin-walled pipe fittings, and is especially suitable for stainless steel pipe quenching which is prone to deformation.

[0020] 2、The fixed cone is arranged on the rotating disc, the inter-rod gap cooperates with the double downspout structure to form a three-dimensional drainage gap, the quenching oil can directly pass through the inter-rod gap of the fixed cone along the inner wall of the pipe fitting, and is efficiently guided through the first downspout and the second downspout, thereby avoiding oil retention, and the oil film residue on the surface of the rotating disc can be avoided, the subsequent pipe fitting cleaning process is reduced, and the stability of the oil temperature is ensured by maintaining the rapid return flow of the quenching oil to the bottom tank.

[0021] 3、The meshing ball and the meshing groove are engaged to drive the rotating disc to rotate at a constant speed by the driving wheel, so that the clamped pipe fitting forms a radial stirring force field in the quenching tank, the pipe fitting continuously disturbs the quenching oil during the rotation process, avoids temperature stratification and accelerates heat exchange, eliminates the oil temperature difference between the edge and the center area of the quenching tank, and compared with the traditional static quenching, the design can reduce the fluctuation range of the surface hardness of the pipe fitting, and especially ensures the uniformity of the surface cooling of the large-size pipe fitting.

[0022] 4、The two-stage telescopic combination rotating assembly of the sliding block and the sliding seat is arranged to realize the multi-degree-of-freedom adjustment of the clamp in space, the pipe fitting can be completely immersed in the deep oil liquid during quenching, and after quenching, the pipe fitting is rotated out of the quenching tank operation area together with the clamp, and the piston is controlled to extend and retract through the communication hole, the arc-shaped sleeve is driven to slide through the air pressure, so that the clamp and the pipe fitting are rotated, and then the pipe fitting is moved to the outside of the sealing door.

[0023] 5、When the sealing door is closed, the base accurately covers the discharge port to form a seal, and the guidance of the roller ensures the closing accuracy, when the sealing door is opened for operation, the base is separated from the discharge port to make the waste oil automatically flow into the bottom tank, the circulating pump pumps the quenching oil back to the quenching tank through the feed pipe to form a closed-loop oil circuit, and through the scheme, the quenching oil can be in contact with the cold air outside, and the heat dissipation efficiency is improved.

[0024] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structure particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Among them: Figure 1 It is a perspective view of the sealing door in an open state of the present application; Figure 2 It is a perspective view of the sealing door in a closed state of the present application; Figure 3 It is a partial sectional view of the quenching box of the present application; Figure 4 It is a perspective view of the rotating disc and the fixed cone of the present application; Figure 5 It is a schematic view of the internal structure of the outer ring and the inner ring of the present application; Figure 6 It is a partial sectional view of the outer ring and the inner ring of the present application; Figure 7 It is a perspective view of the extrusion piece of the present application; Figure 8 It is a perspective view of the sliding block and the sliding seat of the present application; Figure 9 It is a perspective view of the pipe and the clamp of the present application; Figure 10 It is a perspective sectional view of the whole in the first view of the present application; Figure 11 It is a perspective sectional view of the whole in the second view of the present application Figure 10 It is an enlarged view of A in the present application; Figure 12 It is a perspective sectional view of the whole in the third view of the present application; Figure 13 It is a perspective sectional view of the whole in the third view of the present application; Figure 14 It is a bottom view of the rotating disc of the present application; Figure 15 It is a perspective view of the rotating disc, the fixed cone, the first telescopic assembly and the second telescopic assembly of the present application; Figure 16 It is a state change diagram when the pipe of the present application is taken out.

[0026] Among them, the reference signs are as follows: 1, bottom box; 2, quenching tank; 3, sealing door; 4, base; 5, rotating disc; 6, fixed cone; 7, pipe; 8, first lower outlet; 9, second lower outlet; 11, sliding block; 12, sliding seat; 13, outer ring; 14, inner ring; 15, extrusion piece; 16, cross beam; 17, sliding groove; 18, driving disc; 19, first motor; 20, limiting groove; 21, limiting block; 22, spring; 23, second motor; 24, winding rope; 25, gear; 26, rack; 27, third motor; 28, hinge; 29, arc-shaped rod; 30, arc-shaped sleeve; 31, arc-shaped hole; 32, extrusion cavity; 33, communication hole; 34, first telescopic piece; 35, piston; 36, discharge port; 37, feeding pipe; 38, circulating pump; 39, meshing groove; 40, driving rod; 41, fourth motor; 42, driving wheel; 43, meshing ball; 44, roller; 45, winding roller. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described in detail below with reference to the drawings, in which the drawings form a part of this application. The preferred embodiments of the present application will be described in detail below with reference to the drawings, in which the drawings form a part of this application, and are used to explain the principles of the present application.

[0028] Embodiment one: as shown in Figure 1 , Figure 2 , Figure 3 , the present embodiment provides a quenching device for stainless steel pipe processing, comprising a bottom box 1, a quenching tank 2 is fixedly installed above the bottom box 1, one side of the quenching tank 2 is designed to be open and is provided with a sealing door 3, the sealing door 3 is movably connected with the quenching tank 2, a base 4 is connected to one end of the sealing door 3 close to the quenching tank 2, a rotating disc 5 is rotatably installed on the base, a heater (not shown in the figure) is installed in the inside of the quenching tank 2, or the heater can be arranged in the side wall of the quenching tank 2, and the quenching oil is heated by heat conduction.

[0029] As shown in Figure 4 , a plurality of fixed cones 6 are arranged around the top of the rotating disc 5, a pipe 7 to be quenched is sleeved on the fixed cone 6, a first lower outlet 8 is formed in the middle of the rotating disc 5, a second lower outlet 9 is formed around the rotating disc 5, the bottom of the fixed cone 6 is fixedly connected to the inner wall of the second lower outlet 9, the fixed cone 6 is composed of a plurality of independent vertical rods, and a gap is left between adjacent two vertical rods, so that the quenching oil will not be left on the rotating disc 5 or the pipe 7 when it is discharged.

[0030] As shown in Figure 5 , Figure 6As shown, the top of the plurality of pipe fittings 7 is provided with a clamp for simultaneously clamping the plurality of pipe fittings 7, the clamp comprising an outer ring 13 and an inner ring 14, the plurality of pipe fittings 7 being located between the outer ring 13 and the inner ring 14, the inner ring 14 being provided with an extrusion piece 15 inside, the extrusion piece 15 expanding outward to abut the pipe fittings 7 against the inner side of the outer ring 13, and the top of the inner ring 14 being fixedly connected with a cross beam 16.

[0031] The number of extrusion pieces 15 matches the number of pipe fittings 7, the plurality of extrusion pieces 15 being slidingly installed on the side wall of the inner ring 14, the side wall of the inner ring 14 being provided with sliding grooves 17 matching the number of extrusion pieces 15, the extrusion pieces 15 being slidingly connected with the sliding grooves 17, the inner side of the plurality of extrusion pieces 15 being provided with a driving disc 18, the bottom of the driving disc 18 being provided with a first motor 19, the first motor 19 being fixedly installed on the bottom of the inner ring 14, and the output shaft of the first motor 19 being fixedly connected with the bottom of the driving disc 18.

[0032] As shown in Figure 7 , the upper and lower ends of the extrusion piece 15 are provided with limiting grooves 20, the upper and lower inner walls of the inner ring 14 are fixedly connected with limiting blocks 21, the limiting grooves 20 and the limiting blocks 21 are slidingly connected, and the outer wall of the limiting block 21 and the inner wall of the limiting groove 20 are connected with springs 22.

[0033] In the above scheme, when the first motor 19 drives the driving disc 18 to rotate, the plurality of extrusion pieces 15 can be simultaneously extruded by the protrusions around the driving disc 18, so that the plurality of extrusion pieces 15 simultaneously expand outward, so that the extrusion pieces 15 abut against the outer wall of the pipe fittings 7, and the pipe fittings 7 are fixed between the outer ring 13 and the inner ring 14 by the mutual clamping action of the outer ring 13, thereby achieving the fixing effect of the pipe fittings 7.

[0034] As shown in Figure 8 , Figure 9 , one end of the clamp is provided with a sliding block 11, one side of the sliding block 11 is provided with a sliding seat 12, the sliding block 11 and the sliding seat 12 are slidingly connected, the sliding seat 12 and one side of the sealing door 3 are slidingly connected, a first telescopic assembly is installed between the sliding block 11 and the sliding seat 12, and a second telescopic assembly is installed between the sliding seat 12 and the sealing door 3.

[0035] The first telescopic assembly comprises a winding roller 45, the winding roller 45 being rotatably installed in the sealing door 3, a second motor 23 being installed at one end of the winding roller 45, the winding roller 45 being provided with a winding rope 24, the winding rope 24 penetrating from the bottom of the sliding seat 12 to the top side of the sliding seat 12 and being fixedly connected with the top of the sliding block 11, and the direction of rotation of the winding roller 45 being controlled by the second motor 23, so as to realize the winding and unwinding of the winding rope 24, thereby controlling the lifting of the sliding block 11.

[0036] The second telescopic assembly comprises a gear 25 and a rack 26, the gear 25 is rotatably installed inside the sealing door 3, the rack 26 is fixedly connected to one side of the sliding seat 12, the gear 25 is engaged with the rack 26, one end of the gear 25 is provided with a third motor 27, the third motor 27 drives the gear 25 to rotate, thereby driving the rack 26 and the sliding seat 12 to move up and down.

[0037] As shown in Figure 10 , Figure 11 The sliding block 11 is hingedly connected with the clamp, the sliding block 11 is connected with the bottom of the clamp through a rotating assembly, the rotating assembly is used for driving the clamp to rotate, so that a plurality of pipe fittings 7 on the clamp are slid to the outside of the sealing door 3.

[0038] The sliding block 11 is hingedly connected with the outer ring 13 through a hinge 28, the rotating assembly comprises an arc-shaped rod 29 and an arc-shaped sleeve 30, the arc-shaped rod 29 is fixedly connected to the bottom of the sliding block 11, the arc-shaped sleeve 30 is fixedly connected to the outer wall of the outer ring 13, the arc-shaped rod 29 is slidably connected with the arc-shaped sleeve 30, one side of the outer ring 13 is further provided with an arc-shaped hole 31, the arc-shaped hole 31 is located on the extension line of the arc-shaped sleeve 30, the inner wall of the outer ring 13 is provided with an extrusion cavity 32, the extrusion cavity 32 is communicated with the arc-shaped hole 31 through a communication hole 33, the inner wall of the extrusion cavity 32 is fixedly connected with a first telescopic piece 34, the telescopic end of the first telescopic piece 34 is connected with a piston 35, the piston 35 is sealingly and slidably connected with the extrusion cavity 32.

[0039] As shown in Figure 12 , Figure 13 The inner wall of the quenching tank 2 is provided with a discharge port 36 at the bottom, the top end of the discharge port 36 is flush with the bottom end of the base 4, when the sealing door 3 is completely closed, the base 4 covers the discharge port 36, the outer wall of the quenching tank 2 is connected with a feeding pipe 37, one end of the feeding pipe 37 is connected with the bottom tank 1, a circulating pump 38 is fixedly installed in the middle of the feeding pipe 37, when the sealing door 3 is opened, the base 4 is separated from the top end of the discharge port 36, so that the quenching oil in the quenching tank 2 flows into the bottom tank 1.

[0040] As shown in Figure 14 , Figure 15 The bottom of the rotating disc 5 is provided with a plurality of evenly distributed engagement grooves 39, one side of the rotating disc 5 is provided with a driving rod 40, one end of the driving rod 40 is provided with a fourth motor 41, one end of the driving rod 40 close to the rotating disc 5 is connected with a driving wheel 42, a plurality of evenly distributed engagement balls 43 are connected around the driving wheel 42, the engagement balls 43 are engaged with the engagement grooves 39.

[0041] In the above scheme, the fourth motor 41 drives the drive rod 40 and drive wheel 42 to rotate. The meshing ball 43 on the drive wheel 42 meshes with the meshing groove 39 at the bottom of the turntable 5, thereby driving the turntable 5 to rotate synchronously. When the turntable 5 rotates, in conjunction with the clamping action of the fixture, several pipes 7 rotate in the quenching box 2, thereby stirring the quenching oil in the quenching box 2, so that the quenching oil in each position in the quenching box 2 is evenly distributed, thereby making the quenching oil temperature in each position relatively uniform, avoiding the problem that the existing technology cannot evenly stir the entire quenching oil.

[0042] like Figure 10 As shown, a second telescopic component (not shown in the figure) is fixedly installed at the bottom of the quenching box 2. The telescopic end of the second telescopic component is fixedly connected to the bottom of the sealing door 3. A roller 44 is installed at the bottom of the sealing door 3, and the roller 44 rolls on the bottom of the inner wall of the bottom box 1.

[0043] In the above scheme, the second telescopic component drives the sealing door 3 to slide, thereby opening or closing the sealing door 3.

[0044] Example 2: Figure 16 As shown, the technical solution of this embodiment differs from that of Embodiment 1 in that this embodiment provides a quenching method for processing stainless steel pipes, including the following steps: Step 1: Pipe clamping: Multiple pipe fittings 7 are fitted onto the fixed cone 6 of the turntable 5. The first motor 19 is started to drive the drive disk 18 to rotate. The protrusion of the drive disk 18 pushes the extruder 15 to move outward along the sliding groove 17, so that the pipe fittings 7 are clamped between the outer ring 13 and the inner ring 14.

[0045] Step 2: Immerse in quenching oil: The third motor 27 drives the gear 25 to rotate, which in turn drives the rack 26 to lower the slide 12; the second motor 23 controls the winding roller 45 to release the winding rope 24, which causes the slider 11 to move the clamp down and immerse the pipe into the oil in the quenching box 2.

[0046] Step 3: Rotary hardening: The fourth motor 41 drives the drive wheel 42 to rotate through the drive rod 40. The meshing ball 43 meshes with the meshing groove 39 to drive the turntable 5 to rotate. The pipe 7 rotates at a constant speed in the oil to stir the quenching oil, eliminate temperature difference, and achieve uniform cooling.

[0047] Step 4: Oil circulation: The circulating pump 38 pumps the quenching oil from the bottom tank 1 into the quenching tank 2 through the feed pipe 37 to maintain sufficient oil volume. After quenching, the sealing door 3 is opened, and the base 4 is separated from the discharge port 36. The waste oil flows back to the bottom tank 1 for recycling through the first drain port 8 and the second drain port 9.

[0048] Step 5: Unloading and resetting: The slide 12 is lifted and reset, and the arc-shaped rod 29 slides in the arc-shaped sleeve 30, the clamp is rotated by the piston 35, the pipe 7 and the clamp are rotated, then the clamp is loosened, the pipe 7 is discharged from the rear of the sealing door 3.

[0049] In summary, the present application realizes the synchronous fixing of several pipes 7 by setting the outer ring 13 and the inner ring 14, the rotation of the driving disc 18 pushes the extrusion piece 15 to expand uniformly along the sliding groove 17, and the elasticity of the spring 22 can reset; the sliding constraint of the limiting block 21 and the limiting groove 20 ensures that the extrusion process does not deviate, the outer ring 13 provides reverse support to form clamping force, this design significantly improves the clamping safety of thin-walled pipes, especially suitable for stainless steel pipe quenching which is easy to deform; the fixed cone 6 is arranged on the rotating disc 5, the inter-rod gap cooperates with the double downspout structure to form a three-dimensional drainage gap, the quenching oil can directly pass through the gap between the fixed cones 6 along the inner wall of the pipe 7, and is efficiently guided through the first downspout 8 and the second downspout 9, thereby avoiding oil retention, and the oil film remaining on the surface of the rotating disc 5 can be avoided, the subsequent pipe cleaning process is reduced, and the oil temperature stability is maintained by ensuring that the quenching oil quickly returns to the bottom tank 1; the meshing ball 43 and the meshing groove 39 are engaged, the driving wheel 42 drives the rotating disc 5 to rotate at a constant speed, so that the clamped pipe 7 forms a radial stirring force field in the quenching tank 2, the pipe 7 continuously disturbs the quenching oil during rotation, avoids temperature stratification and accelerates heat exchange, eliminates the oil temperature difference between the edge and the center area of the quenching tank 2, compared with the traditional static quenching, this design can reduce the fluctuation range of the surface hardness of the pipe 7, especially to ensure the uniformity of the surface cooling of large-size pipes 7; the two-stage telescopic rotary assembly of the slide block 11 and the slide 12 is arranged, the clamp can be adjusted in multiple degrees of freedom in space, the pipe 7 can be completely immersed in the deep part of the oil during quenching, and after quenching, the clamp is rotated to move out of the working area of the quenching tank 2, the piston 35 is controlled to extend and retract through the communication hole 33, the arc-shaped sleeve 30 is driven to slide through the air pressure, so that the clamp and the pipe 7 are rotated, and then the pipe 7 is moved to the outside of the sealing door 3; when the sealing door 3 is closed, the base 4 accurately covers the discharge port 36 to form a seal, and the guide of the roller 44 ensures the closing accuracy; when the sealing door 3 is opened for operation, the base 4 is separated from the discharge port 36, so that the waste oil automatically flows into the bottom tank 1, the circulating pump 38 pumps the quenching oil back to the quenching tank 2 through the feed pipe 37, forming a closed-loop oil circuit, and the quenching oil can be in contact with the cold air outside through this scheme, thereby improving the heat dissipation efficiency.

[0050] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, if any, are used for distinguishing between similar elements and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of these terms herein is to be construed as interchangeable in order to distinguish over example the exemplary embodiments of the present application from example the prior art unless otherwise explicitly provided by context. Furthermore, the terms "comprising", "having", "including", and "containing" and any variations thereof used herein are intended to cover a non-exclusive inclusion, such that a process, method, system, product, or apparatus that comprises, has, includes or contains a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, system, product or apparatus.

[0052] Parallel: The parallel defined in the present application is not limited to absolute parallel, the definition of this parallel can be understood as substantially parallel, allowing not absolute parallel caused by factors such as assembly tolerance, design tolerance, structure flatness, allowing the existence of a small angle range of error, for example, within the assembly error range of 10 degrees, can be understood as parallel relationship.

[0053] Vertical: The vertical defined in the present application is not limited to the relationship of absolute vertical intersection (included angle is 90 degrees), allowing not absolute vertical intersection relationship caused by factors such as assembly tolerance, design tolerance, structure flatness, allowing the existence of a small angle range of error, for example, within the assembly error range of 80 degrees to 100 degrees, can be understood as vertical relationship.

[0054] The term "a plurality of" herein refers to two or more. The term "and / or" herein is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone.

[0055] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0056] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the claims and their full scope and equivalents.

Claims

1. A quenching device for processing stainless steel pipes, comprising a base box, wherein a quenching chamber is fixedly installed on top of the base box, characterized in that: One side of the quenching box is open and equipped with a sealed door. The sealed door is movably connected to the quenching box. A base is connected to the bottom of the sealed door near the quenching box. A turntable is rotatably installed on the base. Several fixed cones are arranged around the top of the turntable. The pipe fittings to be quenched are fitted onto the fixed cones. A clamp is provided on the top of several pipe fittings. The clamp is used to clamp several pipe fittings at the same time. A slider is provided at one end of the clamp. A slide block is provided on one side of the slider. The slider and the slide block are slidably connected. The slide block is slidably connected to one side of the sealing door. A first telescopic component is installed between the slider and the slide block. A second telescopic component is installed between the slide block and the sealing door. The slider is hinged to the clamp, and the bottom of the slider and the clamp are connected by a rotating assembly. The rotating assembly is used to drive the clamp to rotate, so that several pipes on the clamp are slid to the outside of the sealing door.

2. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The clamp includes an outer ring and an inner ring, with several pipe fittings located between the outer ring and the inner ring. An extrusion member is provided inside the inner ring, which expands outward to press the pipe fittings against the inside of the outer ring.

3. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The number of extrusion parts and pipe fittings are matched. Several extrusion parts are slidably installed on the side wall of the inner ring. A drive disk is provided on the inner side of several extrusion parts. A first motor is provided at the bottom of the drive disk. The first motor is fixedly installed at the bottom of the inner ring. The output shaft of the first motor is fixedly connected to the bottom of the drive disk.

4. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The first telescopic component includes a winding roller, which is rotatably installed inside the sealed door. A second motor is installed at one end of the winding roller, and the winding roller is provided with a winding rope. The winding rope passes through the bottom of the slide block and is fixedly connected to the top of the slide block. By controlling the rotation direction of the winding roller through the second motor, the winding rope can be wound and unwound, thereby controlling the lifting and lowering of the slide block.

5. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The second telescopic component includes a gear and a rack. The gear is rotatably installed inside the sealed door, and the rack is fixedly connected to one side of the slide. The gear meshes with the rack, and a third motor is installed at one end of the gear. The third motor drives the gear to rotate, which in turn drives the rack and the slide to move up and down.

6. The quenching device for stainless steel pipe processing as described in claim 2, characterized in that: The slider and the outer ring are hinged together. The rotating assembly includes an arc-shaped rod and an arc-shaped sleeve. The arc-shaped rod is fixedly connected to the bottom of the slider, and the arc-shaped sleeve is fixedly connected to the outer wall of the outer ring. The arc-shaped rod and the arc-shaped sleeve are slidably connected. An arc-shaped hole is also provided on one side of the outer ring. The arc-shaped hole is located on the extension line of the arc-shaped sleeve. An extrusion chamber is provided inside the outer ring. The extrusion chamber and the arc-shaped hole are connected through a connecting hole. A first telescopic member is fixedly connected to the inner wall of the extrusion chamber. A piston is connected to the telescopic end of the first telescopic member. The piston is slidably connected to the extrusion chamber in a sealed manner.

7. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The bottom of the inner wall of the quenching box has a discharge port, the top of which is flush with the bottom of the base. When the sealed door is completely closed, the base covers the discharge port. The outer wall of the quenching box is connected to a feed pipe, the bottom of which is connected to one end of the bottom box. A circulation pump is fixedly installed in the middle of the feed pipe. When the sealed door is opened, the base separates from the top of the discharge port, allowing the quenching oil inside the quenching box to flow into the bottom box.

8. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: The bottom of the turntable has several evenly distributed meshing grooves. A drive rod is provided on one side of the turntable. A fourth motor is installed at one end of the drive rod. A drive wheel is connected to the end of the drive rod near the turntable. Several evenly distributed meshing balls are connected around the drive wheel. The meshing balls mesh with the meshing grooves.

9. The quenching device for stainless steel pipe processing as described in claim 1, characterized in that: A second telescopic component is fixedly installed at the bottom of the quenching box. The telescopic end of the second telescopic component is fixedly connected to the bottom of the sealing door. Rollers are installed at the bottom of the sealing door and roll on the bottom of the inner wall of the bottom box.

10. A quenching method for processing stainless steel pipes, employing a quenching apparatus for processing stainless steel pipes as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Pipe positioning and clamping: Multiple stainless steel pipes to be processed are respectively fitted onto fixed cones distributed around the turntable; S2. Synchronous locking of pipe tops: Manipulate the first telescopic component and the second telescopic component to drive the slider and slide block to the bottom of the sealing door, so that the clamps hinged on the slider simultaneously press the tops of all pipes. S3, Sealed quenching: Close the sealed door that is connected to the open side of the quenching box, so that the turntable with the sleeved pipe fittings can enter the quenching box to perform the quenching process. S4. Pipe fitting removal and angle adjustment: The second telescopic component drives the sealing door to slide, bringing the pipe out of the quenching box; The first telescopic component and the second telescopic component drive the slider and the slide block to slide upward along the sealing door, thereby driving the clamp and the clamped pipe assembly to move out of the quenching box simultaneously. The rotating assembly is activated to drive the clamp to rotate relative to the slider, so that the removed pipe assembly changes from a vertical state to an inclined state for unloading.

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