A continuous steel pipe induction quenching device and quenching method

Abstract

The present invention discloses a continuous steel pipe induction quenching device and quenching method, which belongs to the technical field of electromagnetic induction quenching, and includes a mounting plate and a water tank, wherein the mounting plate is mounted on the side surface of the water tank and is flush with the upper end, and a plurality of groups of evenly distributed induction coils are mounted on the mounting plate, and the plurality of groups of induction coils are arranged in a straight line, and a plurality of groups of evenly distributed first support frames are arranged below the induction coils, and the upper ends of the first support frames are rotatably connected to worm gears on both the left and right sides. The present invention can realize continuous placement of steel pipes on rollers, and the rotating rollers drive the steel pipes to pass through the induction coils. When the steel pipes pass through the induction coils, the steel pipes are heated, and the heated steel pipes enter the water tank for cooling treatment to complete the quenching of the steel pipes. The entire heating and quenching process is seamlessly connected, forming an integrated process operation. This design not only greatly improves production efficiency, but also reduces manual intervention.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic induction quenching, and more specifically to a continuous steel pipe induction quenching device and a quenching method. Background Art

[0002] The purpose of workpiece quenching is to change the internal structure of metal materials by rapid cooling, thereby improving their hardness, strength and wear resistance. This heat treatment method is mainly used for metal materials such as steel. Specifically, quenching is to heat the workpiece to an appropriate temperature and maintain it for a period of time, and then quickly immerse it in a quenching medium such as oil, water or brine to cool it rapidly. This process will cause the organizational structure of the metal material to change, thereby achieving the purpose of improving the mechanical properties of the material.

[0003] During the quenching process of steel pipe workpieces, the traditional processing method relies on a clamping device to stabilize the steel pipe, and then the workpiece is accurately placed on the induction coil through manual operation or the assistance of a robotic arm. The purpose of this step is to quickly increase the temperature of the workpiece to achieve the heat treatment conditions required for quenching. However, after the heating process is completed, the workpiece needs to be quickly transferred to a water pool to achieve rapid cooling to complete the quenching process. This processing flow involves multiple transfer steps, which is not only cumbersome to operate, but also significantly reduces processing efficiency. Especially in large-scale, batch steel pipe quenching operations, this intermittent operation method cannot ensure continuous and efficient quenching treatment, thereby affecting the overall production efficiency and product quality.

[0004] In view of this, in view of the above-mentioned deficiencies, the present invention improves and optimizes the steel pipe quenching process in the prior art, and develops a continuous steel pipe induction quenching device and a quenching method. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a continuous steel pipe induction quenching device and quenching method, which can realize the continuous placement of steel pipes on rollers, and the rotating rollers drive the steel pipes to pass through the induction coils. The steel pipes are heated when passing through the induction coils, and the heated steel pipes enter the water tank for cooling treatment to complete the quenching of the steel pipes. The entire heating and quenching process is seamlessly connected to form an integrated process operation. This design not only greatly improves production efficiency and reduces manual intervention, but also ensures the stability and consistency of the steel pipes during the heating and quenching process, thereby improving the overall quality of the product.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A continuous steel pipe induction quenching device comprises a mounting plate and a water tank, wherein the mounting plate is mounted on the side surface of the water tank and is flush with the upper end, a plurality of groups of evenly distributed induction coils are mounted on the mounting plate, the plurality of groups of induction coils are arranged in a straight line, a plurality of groups of evenly distributed first support frames are arranged below the induction coils, the left and right sides of the upper end of the first support frame are rotatably connected with worm gears, the two groups of worm gears are arranged at an inclination, a roller is fixedly connected to one side of the worm gear, the upper end of the roller is fixedly connected to a second support frame, a worm gear is meshedly connected to one side of the worm gear, a rotating shaft is arranged between the plurality of groups of worm gears, the worm gears are fixedly connected to the outer circumferential surface of the rotating shaft, a first motor is arranged below the rotating shaft, a first gear is mounted on the output shaft of the first motor, a second gear is meshedly connected to the upper end of the first gear, the rotating shaft passes through the interior of the second gear, and the rotating shaft and the second gear are fixedly connected.

[0008] Furthermore, the inner wall of the water tank is rotatably connected to a position near the upper end, and the multiple groups of support wheels are arranged in a straight line. A pushing block is provided at a position above the support wheel inside the side wall of the water tank, and one end of the pushing block slides through the side wall of the water tank and extends to the outside. A fixed block is fixedly connected to one side of the pushing block, and a spring is fixedly connected to the side surface of the fixed block, and the end of the spring away from the fixed block is fixedly connected to the inside of the side wall of the water tank, and the end of the pushing block away from the outside is designed in an inclined surface, and an extrusion head is provided at the inclined surface of the pushing block, and the contact end of the extrusion head and the pushing block is designed in an arc-shaped structure, and a connecting rod is fixedly connected to the side surface of the extrusion head, and the connecting rod is designed in a U-shaped structure. The end of the connecting rod away from the extrusion head slides through the side wall of the water tank and extends to the outside, and the end of the connecting rod located on the outside is fixedly connected to a force plate.

[0009] Furthermore, a first vertical plate is fixedly connected to the inner wall of the water tank at a position below the supporting wheel, a second vertical plate is arranged on one side of the first vertical plate, the second vertical plate is fixedly connected to the inner wall of the water tank, the upper end of the second vertical plate is higher than the upper end of the first vertical plate, a plurality of groups of evenly distributed first L-shaped rods are fixedly connected to the lower end of the first vertical plate, and the first L-shaped rods are inclined, one end of the first L-shaped rod connected to the first vertical plate is tilted upward, and a space for the steel pipe to roll is left between the lower end of the second vertical plate and the first L-shaped rod.

[0010] Furthermore, multiple groups of belts are arranged inside the water tank, multiple groups of evenly distributed second L-shaped rods are fixedly connected to the outer surface of the belts, rotating wheels are wound around the upper and lower ends of the belts, a connecting shaft is fixedly connected to the center of the rotating wheel, both ends of the connecting shaft of the lower group are rotatably connected to the inner wall of the water tank, and both ends of the connecting shaft of the upper group are rotatably connected to support blocks, the support blocks are fixedly installed on the upper end of the water tank, a second motor is installed on the side surface of the water tank, and the second motor is fixedly connected to the corresponding connecting shaft;

[0011] A plurality of groups of evenly distributed fixing columns are fixedly connected to one end of the water tank above the water tank away from the supporting wheel, and a guide rod is fixedly connected to the upper end of the fixing column, and an end of the guide rod close to the supporting wheel is tilted upward.

[0012] Furthermore, a plurality of driving wheels are fixedly connected to the outer circumferential surface of one set of the rotating shafts.

[0013] Furthermore, a brush cylinder is provided on the upper surface of the mounting plate near the left end, and a plurality of limiting rings are sleeved on the outside of the brush cylinder. The lower end of the limiting ring is fixedly connected to a support column, and the lower end of the support column is fixedly connected to the upper surface of the mounting plate.

[0014] Furthermore, a plurality of groups of rollers are provided in contact with the side surface of the brush cylinder, and the rollers are fixedly mounted on a rotating shaft on which a driving wheel is not mounted.

[0015] Furthermore, a reciprocating spiral groove is formed on the outer side of the brush cylinder, a sliding rod is arranged inside the reciprocating spiral groove, the upper end of the sliding rod is hemispherical, and the lower end of the sliding rod is fixedly connected to the upper surface of the mounting plate.

[0016] Furthermore, a plurality of groups of supporting pads are arranged below the rotating shaft, the lower ends of the supporting pads are fixedly connected to supporting rods, and the lower ends of the supporting rods are fixedly connected to the upper surface of the mounting plate.

[0017] The present invention also provides a continuous steel pipe induction quenching device and a continuous steel pipe induction quenching method applicable to the above-mentioned continuous steel pipe, comprising the following steps:

[0018] S1: Continuous quenching: The steel pipe is continuously placed on the roller, and the rotating roller drives the steel pipe to pass through the induction coil. The steel pipe is heated when passing through the induction coil. The heated steel pipe will enter the water tank for cooling treatment to complete the quenching of the steel pipe;

[0019] S2: Improve quenching: Before the steel pipe enters the induction coil, it will pass through the brush cylinder. The brush cylinder rotates and moves left and right to ensure the cleanliness and smoothness of the steel pipe surface and improve the quenching quality of the steel pipe. When the steel pipe passes through the brush cylinder and enters the induction coil, the driving wheel drives the steel pipe to rotate to ensure uniform heating of the steel pipe and improve the heating efficiency of the steel pipe.

[0020] S3: Take out the workpiece: The heated steel pipe moves into the water tank, where it will be pushed by the pushing block and fall between the first vertical plate and the second vertical plate, and finally roll onto the first L-shaped rod. The moving second L-shaped rod will lift the steel pipe on the first L-shaped rod, and the steel pipe on the second L-shaped rod will finally be received by the guide rod and slide along the slope of the guide rod.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) This solution can continuously place steel pipes on the rollers. The rotating rollers drive the steel pipes to pass through the induction coils. The steel pipes are heated when passing through the induction coils. The heated steel pipes enter the water tank for cooling to complete the quenching of the steel pipes. The entire heating and quenching process is seamlessly connected to form an integrated process operation. This design not only greatly improves production efficiency and reduces manual intervention, but also ensures the stability and consistency of the steel pipes during the heating and quenching process, thereby improving the overall quality of the product.

[0023] (2) In this scheme, before the steel pipe enters the induction coil, the steel pipe will pass through the brush tube, and the brush tube will rotate and move left and right to clean the impurities and oxide scale on the outer surface of the steel pipe, ensuring the cleanliness and smoothness of the steel pipe surface and improving the quenching quality of the steel pipe.

[0024] (3) In this scheme, when the steel pipe enters the induction coil, the driving wheel drives the steel pipe to rotate. The self-rotation of the steel pipe can make the various parts of the steel pipe surface alternately exposed to the strongest and weakest areas of the electromagnetic field, which is convenient for uniform heating of the steel pipe. In addition, by increasing the interaction between the steel pipe and the electromagnetic field, the activity and collision frequency of electrons inside the steel pipe can be promoted, thereby generating more heat energy and improving the heating efficiency of the steel pipe.

[0025] (4) In this solution, the second L-shaped rod is driven by a moving belt to move. When the second L-shaped rod moves, it can take out the cooled steel pipe from the water tank, thereby avoiding the problem of scalding personnel due to manual operation and freeing up manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an appearance view of the overall structure of the present invention;

[0027] Figure 2 It is a partial enlarged view of the mounting plate of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the second support frame of the present invention;

[0029] Figure 4 It is a partial schematic diagram of the first motor of the present invention;

[0030] Figure 5 This is a disassembled view of the brush tube of the present invention;

[0031] Figure 6 A bottom view of the brush barrel of the present invention;

[0032] Figure 7 This is a diagram showing the interior of the water tank of the present invention;

[0033] Figure 8 This is a cross-sectional view of the side wall of the water tank of the present invention at the connecting rod.

[0034] Description of the numbers in the figure:

[0035] 1. Mounting plate; 2. Water tank; 3. Induction coil; 4. First motor; 5. First gear; 6. Second gear; 7. Rotating shaft; 8. Worm gear; 9. Second support frame; 10. First support frame; 11. Rotating roller; 12. Worm gear; 13. Support rod; 14. Support pad; 15. Brush cylinder; 16. Limiting ring; 17. Support column; 18. Roller; 19. Reciprocating spiral groove; 20. Sliding rod; 21. Support wheel; 22. Driving wheel; 23. First vertical plate; 24. Second vertical plate; 25. First L-shaped rod; 26. Rotating wheel; 27. Connecting shaft; 28. Belt; 29. ​​Second L-shaped rod; 30. Fixed column; 31. Guide rod; 32. Force plate; 33. Connecting rod; 34. Extrusion head; 35. Push block; 36. Fixed block; 37. Spring; 38. Second motor; 39. Support block; 40. Steel pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 4A continuous steel pipe induction quenching device comprises a mounting plate 1 and a water tank 2. The mounting plate 1 is mounted on the side surface of the water tank 2 and is flush with the upper end. A plurality of evenly distributed induction coils 3 are mounted on the mounting plate 1. The plurality of induction coils 3 are arranged in a straight line. A plurality of evenly distributed first support frames 10 are arranged below the induction coils 3. The lower end of the first support frame 10 is fixedly connected to the upper surface of the mounting plate 1. The upper end of the first support frame 10 is rotatably connected to worm gears 12 on both sides. The two groups of worm gears 12 are arranged obliquely. A roller 11 is fixedly connected to one side of the worm gear 12. The roller 1 1 is fixedly connected to the upper end of the second support frame 9, the lower end of the second support frame 9 is fixedly connected to the upper surface of the mounting plate 1, one side of the worm wheel 12 is meshedly connected with a worm tooth 8, a rotating shaft 7 is arranged between the multiple groups of worm teeth 8, the worm tooth 8 is fixedly connected to the outer circumferential surface of the rotating shaft 7, a first motor 4 is arranged below the rotating shaft 7, the first motor 4 is mounted on the upper surface of the mounting plate 1, a first gear 5 is installed at the output shaft of the first motor 4, the upper end of the first gear 5 is meshedly connected with a second gear 6, the rotating shaft 7 passes through the interior of the second gear 6, and the rotating shaft 7 and the second gear 6 are fixedly connected.

[0038] When in use, first turn on the two groups of first motors 4, the first motor 4 will drive the first gear 5 to rotate, and the first gear 5 will drive the second gear 6 to rotate when it rotates, and the second gear 6 will drive the shaft 7 to rotate when it rotates, and the shaft 7 will drive the worm teeth 8 on the shaft 7 to rotate when it rotates, and the worm teeth 8 will drive the corresponding meshing worm wheel 12 when it rotates, and the worm wheel 12 will drive the corresponding connected roller 11 to rotate when it rotates. The two groups of rollers 11 above the first support frame 10 rotate in opposite directions. At this time, the steel pipe 40 is picked up manually or by a mechanical arm, and then one end of the steel pipe 40 is placed on the leftmost group of rollers 11. The rotating rollers 11 will transport the steel pipe 40 to the right end. After the steel pipe 40 is transported away, another steel pipe 40 is put in so that one end of the other steel pipe 40 is against the previous one. The tail of the steel pipe 40 is turned on, thereby realizing continuous feeding. When the first motor 4 is turned on, the induction coil 3 is also turned on. A high-frequency current flows in the induction coil 3. When the roller 11 transports the steel pipe 40, the steel pipe 40 will pass through the inside of the induction coil 3. The speed of the roller 11 is controlled by controlling the speed of the first motor 4, so that the steel pipe 40 passes through the induction coil 3 at a certain uniform speed. It should be noted that the quenched steel pipe 40 of the present invention is made of magnetic conductive material or magnetic conductive alloy. When the steel pipe 40 passes through the induction coil 3, the steel pipe 40 is heated by electromagnetic induction, so that the passing steel pipe 40 is heated. Finally, the steel pipe 40 will move into the water tank 2 and fall into the water tank 2. An appropriate amount of water or other coolant is injected into the water tank 2. The water in the water tank 2 will quickly cool the fallen steel pipe 40, thereby completing the quenching of the steel pipe 40.

[0039] like Figure 2 As shown, a plurality of driving wheels 22 are fixedly connected to the outer circumferential surface of a set of rotating shafts 7 .

[0040] When the roller 11 transports the steel pipe 40 through the induction coil 3, the edge of the driving wheel 22 will contact the side surface of the steel pipe 40, and the rotating shaft 7 will also drive the corresponding connected driving wheel 22 to rotate when rotating. The rotating driving wheel 22 will drive the passing steel pipe 40 to rotate. The self-rotation of the steel pipe 40 can make various parts of the surface of the steel pipe 40 alternately exposed to the strongest and weakest areas of the electromagnetic field, which is convenient for uniform heating of the steel pipe 40. In addition, by increasing the interaction between the steel pipe 40 and the electromagnetic field, the activity and collision frequency of the electrons inside the steel pipe 40 can be promoted, thereby generating more heat energy and improving the heating efficiency of the steel pipe 40.

[0041] like Figure 3 , Figure 5 and Figure 6 As shown, a brush cylinder 15 is provided on the upper surface of the mounting plate 1 near the left end, and a plurality of sets of limiting rings 16 are sleeved on the outside of the brush cylinder 15. The lower end of the limiting ring 16 is fixedly connected to a support column 17, and the lower end of the support column 17 is fixedly connected to the upper surface of the mounting plate 1.

[0042] When the roller 11 is conveying the steel pipe 40, the steel pipe 40 will first pass through the brush tube 15 before entering the induction coil 3. The bristles inside the brush tube 15 will clean the outer surface of the steel pipe 40, thereby removing impurities and oxide scale on the outer surface of the steel pipe 40, ensuring the cleanliness and smoothness of the surface of the steel pipe 40, and improving the quenching quality of the steel pipe 40.

[0043] like Figure 6 As shown, the side surface of the brush cylinder 15 is provided with a plurality of groups of rollers 18 in contact with each other, and the rollers 18 are fixedly mounted on the rotating shaft 7 on which the driving wheel 22 is not mounted.

[0044] When the shaft 7 rotates, it drives the driving wheel 22 to rotate, and when the driving wheel 22 rotates, it drives the brush cylinder 15 to rotate, and the rotation direction of the brush cylinder 15 is opposite to that of the steel pipe 40, which greatly improves the cleaning effect of the brush cylinder 15 on the outer surface of the steel pipe 40.

[0045] like Figures 5 and 6 As shown, a reciprocating spiral groove 19 is provided on the outer side of the brush tube 15 , and a sliding rod 20 is arranged inside the reciprocating spiral groove 19 . The upper end of the sliding rod 20 is hemispherical in design, and the lower end of the sliding rod 20 is fixedly connected to the upper surface of the mounting plate 1 .

[0046] When the brush cylinder 15 rotates, it will drive the reciprocating spiral groove 19 to rotate synchronously. Because the upper end of the sliding rod 20 is arranged inside the reciprocating spiral groove 19, when the reciprocating spiral groove 19 rotates with the brush cylinder 15, the sliding rod 20 will squeeze the side wall of the reciprocating spiral groove 19, thereby driving the brush cylinder 15 to move left and right. In this way, the brush cylinder 15 can move left and right while rotating, further improving the cleaning effect of the brush cylinder 15 on the outer surface of the steel pipe 40.

[0047] like Figure 1 , Figure 7 and Figure 8 As shown, a plurality of groups of evenly distributed support wheels 21 are rotatably connected to the inner wall of the water tank 2 near the upper end, and the plurality of support wheels 21 are arranged in a straight line. A pushing block 35 is arranged inside the side wall of the water tank 2 at a position above the support wheels 21. One end of the pushing block 35 slides through the side wall of the water tank 2 and extends to the outside. A fixing block 36 is fixedly connected to one side of the pushing block 35. A spring 37 is fixedly connected to the side surface of the fixing block 36. The end of the spring 37 away from the fixing block 36 is fixedly connected to the inside of the side wall of the water tank 2. The end of the pushing block 35 away from the outside is designed in an inclined surface. An extrusion head 34 is arranged at the inclined surface of the pushing block 35. The contact end of the extrusion head 34 and the pushing block 35 is designed in an arc-shaped structure. A connecting rod 33 is fixedly connected to the side surface of the extrusion head 34. The connecting rod 33 is designed in a U-shaped structure. The end of the connecting rod 33 away from the extrusion head 34 slides through the side wall of the water tank 2 and extends to the outside. The end of the connecting rod 33 located on the outside is fixedly connected to a force-bearing plate 32.

[0048] When the steel pipe 40 passes through the induction coil 3 and enters the upper end of the water tank 2, the steel pipe 40 will enter above the support wheel 21. The support wheel 21 supports the steel pipe 40 to ensure the smooth transportation of the steel pipe 40. If there is no support wheel 21, when most of the steel pipe 40 enters above the water tank 2, due to gravity, the steel pipe 40 will tilt into the water tank 2, causing the steel pipe 40 in the induction coil 3 to tilt up. In this way, the heated steel pipe 40 will touch the induction coil 3, which is easy to cause damage to the induction coil 3, and also cause damage to the outer surface of the steel pipe 40. The steel pipe 40 moves along the support wheel 21, and finally the front end of the steel pipe 40 will hit the force plate 32, and as the steel pipe 40 continues to move, it will squeeze the force plate 32. After being squeezed, the force plate 32 will The connecting rod 33 is pushed to move. When the connecting rod 33 moves, it will drive the extrusion head 34 to move synchronously. When the extrusion head 34 moves, it will squeeze the inclined surface of the force-bearing plate 32, so that the pushing block 35 extends out from the side wall of the water tank 2. When the pushing block 35 extends out, it will hit the side wall of the steel pipe 40, thereby pushing the steel pipe 40 off the supporting wheel 21, so that the steel pipe 40 falls into the water tank 2 and performs a cooling operation. When the pushing block 35 extends out from the side wall of the water tank 2, it will drive the fixed block 36 to compress the spring 37. When the steel pipe 40 is separated from the force-bearing plate 32, the previously compressed spring 37 will drive the fixed block 36 to move in the opposite direction, thereby driving the pushing block 35 to retract into the side wall of the water tank 2 again, so as to prevent the extended pushing block 35 from hindering the movement of the steel pipe 40.

[0049] like Figure 1 , Figure 7 and Figure 8 As shown, the inner wall of the water tank 2 is fixedly connected with a first vertical plate 23 at a position below the support wheel 21, and a second vertical plate 24 is arranged on one side of the first vertical plate 23, and the second vertical plate 24 is fixedly connected to the inner wall of the water tank 2, and the upper end of the second vertical plate 24 is higher than the upper end of the first vertical plate 23, and the lower end of the first vertical plate 23 is fixedly connected with a plurality of groups of evenly distributed first L-shaped rods 25, and the first L-shaped rods 25 are inclined, and one end of the first L-shaped rod 25 connected to the first vertical plate 23 is tilted upward, and a space for the steel pipe 40 to roll is reserved between the lower end of the second vertical plate 24 and the first L-shaped rod 25.

[0050] like Figure 1 , Figure 7 and Figure 8As shown, multiple groups of belts 28 are arranged inside the water tank 2, and multiple groups of evenly distributed second L-shaped rods 29 are fixedly connected to the outer surface of the belts 28. The upper and lower ends of the belts 28 are both wound with rotating wheels 26, and the center of the rotating wheel 26 is fixedly connected with a connecting shaft 27. The two ends of a group of connecting shafts 27 at the lower end are rotatably connected to the inner wall of the water tank 2, and the two ends of a group of connecting shafts 27 at the upper end are rotatably connected to support blocks 39. The support blocks 39 are fixedly installed on the upper end of the water tank 2, and a second motor 38 is installed on the side surface of the water tank 2. The second motor 38 is fixedly connected to the corresponding connecting shaft 27;

[0051] A plurality of evenly distributed fixing columns 30 are fixedly connected to one end of the water tank 2 away from the supporting wheel 21 , and a guide rod 31 is fixedly connected to the upper end of the fixing column 30 , and the guide rod 31 is tilted upward at one end close to the supporting wheel 21 .

[0052] When the steel pipe 40 is pushed by the pushing block 35, the steel pipe 40 will fall between the first vertical plate 23 and the second vertical plate 24. The upper end of the second vertical plate 24 is higher than the upper end of the first vertical plate 23, which can ensure that the steel pipe 40 accurately falls between the first vertical plate 23 and the second vertical plate 24. The spacing between the first vertical plate 23 and the second vertical plate 24 is just enough to accommodate the falling of the steel pipe 40. The steel pipe 40 finally falls onto the first L-shaped rod 25 and rolls along the slope of the first L-shaped rod 25. Finally, it is blocked by the raised portion of the first L-shaped rod 25 and no longer moves. Only one group of steel pipes 40 can be accommodated between the right side of the second vertical plate 24 and the raised portion of the first L-shaped rod 25. The continuously falling steel pipes 40 will be stored between the first vertical plate 23 and the second vertical plate 24. The stored steel pipes 40 are immersed in water, which can cool the steel pipes 40.

[0053] The second motor 38 drives the corresponding connecting shaft 27 to rotate. When the connecting shaft 27 rotates, it drives the corresponding rotating wheel 26 to rotate. When the rotating wheel 26 rotates, it drives the belt 28 to operate. When the belt 28 operates, it drives the second L-shaped rod 29 to move. When the second L-shaped rod 29 moves with the belt 28, it lifts the steel pipe 40 on the right side of the second vertical plate 24, so that the steel pipe 40 is separated from the first L-shaped rod 25. At this time, the steel pipe 40 at the lower end of the first vertical plate 23 rolls along the slope of the first L-shaped rod 25 and rolls to the raised part of the first L-shaped rod 25. The second L-shaped rod 29 is lifted up in preparation for the next group passing by. After the second L-shaped rod 29 lifts the steel pipe 40, it will move upward and move upward along the belt 28. When it moves to the top of the guide rod 31, the steel pipe 40 on the second L-shaped rod 29 will be received by the guide rod 31, and the empty second L-shaped rod 29 will continue to move downward with the belt 28. The steel pipe 40 on the guide rod 31 will roll downward along the slope of the guide rod 31. The steel pipe 40 after quenching will fall from the guide rod 31. A conveyor belt can be set under the guide rod 31 so that the quenched steel pipe 40 can be transported away in time.

[0054] like Figure 1 and Figure 4 As shown, a plurality of support pads 14 are arranged below the rotating shaft 7, the lower ends of the support pads 14 are fixedly connected to the support rods 13, the lower ends of the support rods 13 are fixedly connected to the upper surface of the mounting plate 1, and the support pads 14 and the support rods 13 play a supporting role for the rotating shaft 7.

[0055] The present invention also provides a continuous steel pipe induction quenching device and a continuous steel pipe induction quenching method applicable to the above-mentioned continuous steel pipe, comprising the following steps:

[0056] S1: Continuous quenching: The steel pipe 40 is continuously placed on the roller 11, and the rotating roller 11 drives the steel pipe 40 to pass through the induction coil 3. When the steel pipe 40 passes through the induction coil 3, the steel pipe 40 is heated. The heated steel pipe 40 enters the water tank 2 for cooling treatment, and the quenching of the steel pipe 40 is completed;

[0057] S2: Improve quenching: Before the steel pipe 40 enters the induction coil 3, the steel pipe 40 will pass through the brush cylinder 15. The brush cylinder 15 rotates and moves left and right to ensure the cleanliness and smoothness of the surface of the steel pipe 40, thereby improving the quenching quality of the steel pipe 40. When the steel pipe 40 passes through the brush cylinder 15 and enters the induction coil 3, the driving wheel 22 drives the steel pipe 40 to rotate, thereby ensuring uniform heating of the steel pipe 40 and improving the heating efficiency of the steel pipe 40.

[0058] S3: Take out the workpiece: The heated steel pipe 40 moves into the water tank 2, where it will be pushed by the pushing block 35 and fall between the first vertical plate 23 and the second vertical plate 24, and finally roll onto the first L-shaped rod 25. The moving second L-shaped rod 29 will lift the steel pipe 40 on the first L-shaped rod 25, and the steel pipe 40 on the second L-shaped rod 29 will finally be received by the guide rod 31 and slide along the slope of the guide rod 31.

[0059] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A continuous steel pipe induction quenching device, comprising a mounting plate (1) and a water tank (2), characterized in that: The mounting plate (1) is mounted on the side surface of the water tank (2) and is flush with the upper end. A plurality of groups of evenly distributed induction coils (3) are mounted on the mounting plate (1). The plurality of groups of induction coils (3) are arranged in a straight line. A plurality of groups of evenly distributed first support frames (10) are arranged below the induction coils (3). The upper ends of the first support frames (10) are rotatably connected to worm gears (12) on both left and right sides. The two groups of worm gears (12) are arranged in an inclined manner. A roller (11) is fixedly connected to one side of the worm gear (12). The upper end of the roller (11) is fixedly connected to the roller (11). A second support frame (9) is connected, one side of the worm wheel (12) is meshingly connected with worm teeth (8), a rotating shaft (7) is arranged between the plurality of groups of worm teeth (8), the worm teeth (8) are fixedly connected to the outer circumferential surface of the rotating shaft (7), a first motor (4) is arranged below the rotating shaft (7), a first gear (5) is installed at the output shaft of the first motor (4), the upper end of the first gear (5) is meshingly connected with a second gear (6), the rotating shaft (7) passes through the interior of the second gear (6), and the rotating shaft (7) and the second gear (6) are fixedly connected; A plurality of groups of evenly distributed support wheels (21) are rotatably connected at positions near the upper end of the inner wall of the water tank (2), and the plurality of groups of support wheels (21) are arranged in a straight line. A pushing block (35) is arranged inside the side wall of the water tank (2) at a position above the support wheels (21). One end of the pushing block (35) slides through the side wall of the water tank (2) and extends to the outside. A fixing block (36) is fixedly connected to one side of the pushing block (35). A spring (37) is fixedly connected to the side surface of the fixing block (36). One end of the spring (37) away from the fixing block (36) is connected to the water tank (2). ), the end of the pushing block (35) away from the outside is designed as an inclined surface, an extrusion head (34) is provided at the inclined surface of the pushing block (35), the contact end of the extrusion head (34) and the pushing block (35) is designed as an arc-shaped structure, the side surface of the extrusion head (34) is fixedly connected to a connecting rod (33), the connecting rod (33) is designed as a U-shaped structure, the end of the connecting rod (33) away from the extrusion head (34) slides through the side wall of the water tank (2) and extends to the outside, and the end of the connecting rod (33) located on the outside is fixedly connected to a force-bearing plate (32); The inner wall of the water tank (2) is fixedly connected to a first vertical plate (23) at a position below the support wheel (21); a second vertical plate (24) is arranged on one side of the first vertical plate (23); the second vertical plate (24) is fixedly connected to the inner wall of the water tank (2); a plurality of groups of evenly distributed first L-shaped rods (25) are fixedly connected to the lower end of the first vertical plate (23); the first L-shaped rods (25) are arranged in an inclined manner; one end of the first L-shaped rod (25) connected to the first vertical plate (23) is tilted upward; a space for the steel pipe to roll is reserved between the lower end of the second vertical plate (24) and the first L-shaped rod (25); and the upper end of the second vertical plate (24) is higher than the first vertical plate. The upper end of the first vertical plate (23) ensures that the steel pipe (40) accurately falls between the first vertical plate (23) and the second vertical plate (24). The spacing between the first vertical plate (23) and the second vertical plate (24) is just enough to accommodate the falling steel pipe (40). The steel pipe (40) finally falls onto the first L-shaped rod (25) and rolls along the slope of the first L-shaped rod (25). Finally, it is blocked by the raised portion of the first L-shaped rod (25) and no longer moves. The right side of the second vertical plate (24) and the raised portion of the first L-shaped rod (25) can only accommodate one group of steel pipes (40). The steel pipes (40) that continue to fall in will be stored between the first vertical plate (23) and the second vertical plate (24); A plurality of groups of belts (28) are arranged inside the water tank (2), and a plurality of groups of evenly distributed second L-shaped rods (29) are fixedly connected to the outer surface of the belt (28), and the upper and lower ends of the belt (28) are both wound around a rotating wheel (26), and a connecting shaft (27) is fixedly connected to the center of the rotating wheel (26), and the two ends of the lower end group of the connecting shaft (27) are rotatably connected to the inner wall of the water tank (2), and the two ends of the upper end group of the connecting shaft (27) are rotatably connected to a support block (39), and the support block (39) is fixedly installed on the upper end of the water tank (2), and a second motor (38) is installed on the side surface of the water tank (2), and the second motor (38) is fixedly connected to the corresponding connecting shaft (27), and a plurality of evenly distributed fixing columns (30) are fixedly connected to the upper end of the water tank (2) away from the supporting wheel (21), and the upper end of the fixing column (30) is fixedly connected to a guide rod (31), and the end of the guide rod (31) close to the supporting wheel (21) is tilted upward; A plurality of driving wheels (22) are fixedly connected to the outer circumferential surface of one group of the rotating shafts (7); a brush cylinder (15) is arranged at a position near the left end of the upper surface of the mounting plate (1); a plurality of limiting rings (16) are sleeved on the outside of the brush cylinder (15); a support column (17) is fixedly connected to the lower end of the limiting ring (16); the lower end of the support column (17) is fixedly connected to the upper surface of the mounting plate (1); a plurality of rollers (18) are contacted with the side surface of the brush cylinder (15); the rollers (18) are fixedly mounted on the rotating shaft (7) not mounted with the driving wheels (22); a reciprocating spiral groove (19) is provided on the outer side surface of the brush cylinder (15); a sliding rod (20) is arranged inside the reciprocating spiral groove (19); the upper end of the sliding rod (20) is hemispherical in design; the lower end of the sliding rod (20) is fixedly connected to the upper surface of the mounting plate (1).

2. A continuous steel pipe induction quenching device according to claim 1, characterized in that: A plurality of groups of support pads (14) are arranged below the rotating shaft (7), the lower ends of the support pads (14) are fixedly connected to support rods (13), and the lower ends of the support rods (13) are fixedly connected to the upper surface of the mounting plate (1).

3. A continuous steel pipe induction quenching method applicable to the continuous steel pipe induction quenching device according to any one of claims 1 to 2, characterized in that: The steps include: S1: Continuous quenching: The steel pipe is continuously placed on the roller (11), and the rotating roller (11) drives the steel pipe to pass through the induction coil (3). The steel pipe is heated when passing through the induction coil (3). The heated steel pipe enters the water tank (2) for cooling treatment, thereby completing the quenching of the steel pipe; S2: Improve quenching: Before the steel pipe enters the induction coil (3), the steel pipe passes through the brush cylinder (15). The brush cylinder (15) rotates and moves left and right to ensure that the surface of the steel pipe is clean and smooth, thereby improving the quenching quality of the steel pipe. When the steel pipe passes through the brush cylinder (15) and enters the induction coil (3), the driving wheel (22) drives the steel pipe to rotate to ensure that the steel pipe is evenly heated and improve the heating efficiency of the steel pipe. S3: Removing the workpiece: The heated steel pipe moves into the water tank (2), is pushed by the pushing block (35), and falls between the first vertical plate (23) and the second vertical plate (24), and finally rolls onto the first L-shaped rod (25). The moving second L-shaped rod (29) lifts the steel pipe on the first L-shaped rod (25), and the steel pipe on the second L-shaped rod (29) is finally received by the guide rod (31) and slides along the slope of the guide rod (31).

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