Semi-automatic quenching device for movable jaw of pipe clamp

Abstract

This invention relates to a semi-automatic quenching device for the movable jaw of a pipe wrench, comprising a frame, an inclined bearing seat connected to the frame, a rotating shaft rotatably connected within the bearing seat, a turntable fixedly connected to the upper end of the rotating shaft, and a drive device connected to the frame to drive the rotating shaft to rotate. Multiple slots are evenly distributed circumferentially on the upper surface of the turntable, any slot extending radially along the turntable. The highest point of the turntable is the loading station, and the lowest point is the unloading station. Along the rotation direction of the turntable, from the loading station to the unloading station, heating and cooling stations are sequentially arranged. The heating station is equipped with a high-frequency induction heater, and the cooling station is equipped with a coolant spray head. This invention, through the inclined turntable and the slots on the turntable, drives the movable jaw head to sequentially pass through the heating station for heating, the cooling station for quenching, and the unloading station for automatic unloading, forming a semi-automatic assembly line operation, improving operational safety and avoiding accidents. Simultaneously, the assembly line operation also improves quenching efficiency.

Description

Technical field:

[0001] The invention belongs to the technical field of heat treatment, and in particular relates to a semi-automatic quenching device for a movable jaw of a pipe clamp. Background technology:

[0002] The shape of the movable jaw of the pipe clamp is "7", and a movable jaw is arranged on the inner side of the movable jaw. When the pipe clamp is in use, the pipe is clamped by the movable jaw and the fixed jaw, and then force is applied to the clamp handle to twist the pipe. Therefore, during the operation, the movable jaw and the fixed jaw are subjected to great pressure, which requires that the movable jaw and the fixed jaw have high strength, wear resistance and bite resistance.

[0003] At present, there are two ways to perform heat treatment on the movable jaw on the movable pliers head of the pipe clamp. One is overall heat treatment, which has high energy consumption and great waste. The second way is manual local heat treatment of the movable jaw, which has high labor costs and great safety risks for workers. Summary of the invention:

[0004] The technical problem to be solved by the present invention is to provide a semi-automatic quenching device for movable jaws of a pipe clamp with high quenching efficiency and safe operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a semi-automatic quenching device for movable jaws of a pipe clamp, comprising a frame, the frame is connected to an inclined bearing seat, a rotating shaft is rotatably connected in the bearing seat, the rotating shaft extends obliquely upward and both ends extend out of the bearing seat, a turntable is fixedly connected to the upper end of the rotating shaft, the turntable surface is perpendicular to the axial direction of the rotating shaft, and a driving device for driving the rotating shaft to rotate is connected to the frame, a plurality of card slots for clamping movable clamp heads are evenly distributed on the upper surface of the turntable in the circumferential direction, and any card slot extends radially along the turntable, the highest point of the turntable is the loading station, and the rotating shaft is connected to the upper end of the turntable. The lowest point of the disk is the unloading station. A heating station and a cooling station are arranged in sequence from the loading station to the downloading station along the rotation direction of the turntable. The heating station is provided with a high-frequency induction heater for heating the movable jaw of the movable clamp head. The high-frequency induction heater is suspended above the turntable through a heating bracket and is directly opposite to the movable jaw. The heating bracket is connected to the frame or the ground. The cooling station is provided with a coolant spray head for spraying water cooling on the heated movable jaw. The coolant spray head is suspended above the turntable through a cooling bracket and is directly opposite to the turntable surface. The cooling bracket is connected to the frame or the ground.

[0006] As a preferred solution, the number of the card slots is an even number, and every two adjacent card slots correspond to a clamping cylinder, the clamping cylinder is fixedly connected to the back of the turntable, the piston rod of the clamping cylinder vertically passes through the turntable and extends above the turntable, the piston rod of the clamping cylinder is located between the two adjacent card slots, and the upper end of the piston rod of the clamping cylinder is fixedly connected to a pressing plate, which is directly opposite to the two adjacent card slots, and the lower end surface of the turntable is connected to a travel switch corresponding to the clamping cylinder one by one, and the frame is provided with a feeding baffle and an unloading baffle that cooperate with the travel switch. Material baffle, when any stroke switch rotates to abut against the feeding baffle, the stroke switch is turned on, and the clamping cylinder corresponding to the stroke switch just moves to the feeding position, and the piston rod of the clamping cylinder extends; when any stroke switch rotates to abut against the unloading baffle, the stroke switch is turned on, and the clamping cylinder corresponding to the stroke switch just moves to the unloading position, the piston rod of the clamping cylinder extends, and the material slides off. After any stroke switch is separated from the feeding baffle, the piston rod of the clamping cylinder retracts, driving the pressure plate to press down and press the movable clamp head.

[0007] As a preferred solution, the lower end of the piston rod of the clamping cylinder extends out of the cylinder body and is connected to a stopper, and a first return spring is sleeved on the piston rod between the stopper and the clamping cylinder body, and the two ends of the first return spring are respectively abutted against the stopper and the clamping cylinder body, and the return spring drives the piston rod of the clamping cylinder to move downward to drive the pressure plate to press down.

[0008] As a preferred solution, the frame is connected to a positioning frame, the positioning frame is opposite to the loading station, and the positioning frame is connected to an arc-shaped positioning plate suspended above the turntable. The positioning plate is located at the loading station, the convex arc edge on the positioning plate is concentric with the turntable, and the convex arc edge of the positioning plate is directly opposite to the movable jaw of the movable clamp.

[0009] As a preferred solution, the frame is connected to a unloading rack, which is opposite to the unloading station of the turntable. The unloading rack is connected to a unloading cylinder located above the turntable and extending radially along the turntable. The end of the piston rod of the unloading cylinder is connected to a unloading plate, which is suspended above the turntable and directly faces the movable jaw of the movable clamp head located at the unloading station. A second return spring is sleeved on the piston rod of the unloading cylinder. The unloading cylinder is electrically connected to a controller. The controller controls the unloading cylinder to retract its piston rod at a certain frequency, and the second return spring drives the piston rod of the unloading cylinder to move upward.

[0010] The beneficial effect of the present invention is that the present invention drives the movable clamp head to be heated in the heating station, quenched in the cooling station and automatically unloaded in the unloading station by the tilted turntable and the slot on the turntable, thereby forming a semi-automatic assembly line operation. The worker only needs to insert the movable clamp heads into the slots one by one from the loading station to easily complete the quenching operation without directly heating the movable clamp heads by hand, so that the worker is away from the high-frequency induction heater and the heated movable clamp heads, thereby improving the safety of operation and avoiding accidents. At the same time, the assembly line operation also improves the quenching efficiency.

[0011] The present invention further provides a clamping cylinder and a pressing plate to clamp the movable jaw installed in the slot to ensure that the relative position of the movable jaw and the slot does not change during the rotation of the turntable, further stabilizes the heating effect of the high-frequency induction heater on the movable jaw, and improves the consistency of the quenching effect of the movable jaw of the movable jaw.

[0012] The present invention further drives the pressing plate to press the movable clamp head through the first return spring, so as to reduce the energy consumption for driving the pressing cylinder and save energy.

[0013] The present invention further positions the loading position of the movable clamp head by a positioning plate with a convex arc edge, ensuring that the depth of the movable clamp head inserted into the card slot is consistent each time the material is loaded, thereby ensuring that the distance between each movable jaw and the high-frequency induction heater is consistent and the heating effect is consistent.

[0014] The present invention further drives the unloading plate to move downward through the unloading cylinder to move the movable clamp head downward to slide out of the slot, thereby achieving stable and reliable unloading and avoiding the phenomenon that the movable clamp head cannot automatically slide down and cause secondary quenching. Description of the drawings:

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 A view in the figure.

[0018] Figure 1 and Figure 2In: 1. frame, 2. bearing seat, 3. rotating shaft, 4. turntable, 5. driving device, 6. movable clamp head, 601, movable jaw, 7. slot, 8. high-frequency induction heater, 9. heating bracket, 10. coolant spray head, 11. cooling bracket, 12. clamping cylinder, 13. pressing plate, 14. travel switch, 15. loading baffle, 16. unloading baffle, 17. positioning bracket, 18. positioning plate, 1801, convex arc edge, 19. unloading bracket, 20. unloading cylinder, 21. unloading plate, 22. block, 23. first return spring, 24. second return spring, 25. controller, 26. unloading valve, 27. pneumatic rotary joint, 28. air inlet pipe, 29. connecting pipe, 30. air inlet valve, 31. high-pressure air source, 32. positioning ring, 33. cylinder. Specific implementation method:

[0019] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 The semi-automatic quenching device for the movable jaw of a pipe clamp shown in the figure comprises a frame 1, the frame 1 is connected to an inclined bearing seat 2, a rotating shaft 3 is rotatably connected inside the bearing seat 2, the rotating shaft 3 extends obliquely upward and both ends extend out of the bearing seat 2, a turntable 4 is fixedly connected to the upper end of the rotating shaft 3, the turntable 4 is perpendicular to the axial direction of the rotating shaft 3, and a driving device 5 for driving the rotating shaft 3 to rotate is connected to the frame 1, a plurality of card slots 7 for clamping the movable clamp head 6 are evenly distributed in the circumferential direction on the upper surface of the turntable 4, and any card slot 7 extends radially along the turntable 4, the highest point of the turntable 4 is the loading station, and the lowest point of the turntable 4 is the unloading station. A heating station and a cooling station are sequentially arranged from the loading station to the unloading station. The heating station is provided with a high-frequency induction heater 8 for heating the movable jaw 601 of the movable clamp head 6. The high-frequency induction heater 8 is suspended above the turntable 4 through a heating bracket 9 and is directly opposite to the movable jaw 601. The heating bracket 9 is connected to the frame 1 or the ground. The cooling station is provided with a coolant spray head 10 for spraying water cooling on the heated movable jaw 601. The coolant spray head 10 is connected to a water source. The coolant spray head 10 is suspended above the turntable 4 through a cooling bracket 11 and is directly opposite to the turntable 4 surface. The cooling bracket 11 is connected to the frame 1 or the ground.

[0021] like Figure 2 As shown, in this embodiment, any slot 7 is composed of two adjacent rows of cylinders 33 arranged along the circumference of the turntable 4, and each row of cylinders 33 has two cylinders, which are discretely arranged along the radial direction of the turntable 4.

[0022] The number of the card slots 7 is an even number, and each two adjacent card slots 7 correspond to a clamping cylinder 12. The clamping cylinder 12 is fixedly connected to the back of the turntable 4. The piston rod of the clamping cylinder 12 vertically passes through the turntable 4 and extends to the top of the turntable 4. The piston rod of the clamping cylinder 12 is located between the two adjacent card slots 7. A pressing plate 13 is fixedly connected to the upper end of the piston rod of the clamping cylinder 12, and the pressing plate 13 is opposite to the two adjacent card slots 7. A travel switch 14 corresponding to the clamping cylinder 12 is connected to the lower end surface of the turntable 4. A loading baffle 15 and a discharging baffle 16 cooperating with the travel switch 14 are provided on the frame 1. When any stroke switch 14 rotates to abut against the loading baffle 15, the stroke switch 14 is turned on, and the clamping cylinder 12 corresponding to the stroke switch 14 just moves to the loading position, and the piston rod of the clamping cylinder 12 extends; when any stroke switch rotates to abut against the unloading baffle 16, the stroke switch 14 is turned on, and the clamping cylinder 12 corresponding to the stroke switch 14 just moves to the unloading position, the piston rod of the clamping cylinder 12 extends, and the material slides off. After any stroke switch 14 is separated from the loading baffle 15, the piston rod of the clamping cylinder 12 retracts, driving the pressing plate 13 to press down, pressing the movable clamp head 6.

[0023] The lower end of the piston rod of the clamping cylinder 12 extends out of the cylinder body and is connected to a stopper 22. A first return spring 23 is sleeved on the piston rod between the stopper 22 and the cylinder body of the clamping cylinder 12. The two ends of the first return spring 23 are respectively in contact with the stopper 22 and the cylinder body of the clamping cylinder 12. The return spring 23 drives the piston rod of the clamping cylinder 12 to move downward to drive the pressure plate 13 to press down.

[0024] In this embodiment, a pneumatic rotary joint 27 is sleeved on the rotating shaft 3 located above the bearing seat 2, and each clamping cylinder 12 is connected to an air inlet pipe 28. The other end of the air inlet pipe is connected to the air outlet end of the pneumatic rotary joint 27. The air inlet end of the pneumatic rotary joint 27 is connected to a high-pressure air source 31 through a connecting pipe 29. Each air inlet pipe 28 is connected to an air inlet valve 30. Any travel switch 14 corresponding to the clamping cylinder 12 is used to control the air inlet valve 30 on the air inlet pipe 28 of the clamping cylinder 12. The air inlet valve 30 is a three-way valve, and one interface of the air inlet valve 30 is open for exhaust.

[0025] The frame 1 is connected to a positioning frame 17, which is opposite to the loading station. The positioning frame 17 is connected to an arc-shaped positioning plate 18 suspended above the turntable 4. The positioning plate 18 is located at the loading station. The convex arc edge 1801 on the positioning plate 18 is concentric with the turntable 4, and the convex arc edge 1801 of the positioning plate 18 is opposite to the movable jaw 601 of the movable clamp head 6.

[0026] The frame 1 is connected with a discharge rack 19, which is opposite to the discharge station of the turntable 4. The discharge rack 19 is connected with a discharge cylinder 20 located above the turntable 4 and extending radially along the turntable 4. The end of the piston rod of the discharge cylinder 20 is connected with a discharge plate 21. The discharge plate 21 is suspended above the turntable 4 and faces the movable jaw 601 of the movable clamp head 6 located at the discharge station. A second return spring 24 is sleeved on the piston rod of the discharge cylinder 20. The discharge cylinder 20 is controlled by a controller 25. The controller 25 controls the discharge cylinder 20 to retract its piston rod at a certain frequency. The second return spring 24 drives the piston rod of the discharge cylinder 20 to move upward, such as Figure 1 As shown, a positioning ring 32 is sleeved on the piston rod of the unloading cylinder 20 , one end of the second return spring 24 abuts against the positioning ring 32 , and the other end abuts against the end of the cylinder body of the unloading cylinder 20 .

[0027] The working principle of the present invention is: Figure 1 and Figure 2 As shown, the driving device 5 is started to rotate the turntable 4, and then the power of the high-frequency induction heater 8 is turned on, and the coolant spray head is turned on to spray the coolant. The operator is located at the loading station, holding the movable clamp head 6 to prepare for loading.

[0028] When the turntable 4 rotates, when any slot 7 rotates to the loading station, the travel switch 14 corresponding to the clamping cylinder 12 on one side of the slot 7 just rotates to abut against the loading baffle 15, and the travel switch 14 controls the air inlet valve 30 to connect the air inlet pipe 28, and the high-pressure gas enters the clamping cylinder 12 to make the piston rod of the clamping cylinder 12 extend upward, driving the pressing plate 13 above the slot 7 to move upward. At this time, the operator inserts the movable pliers 6 in his hand into the slot 7 to make the movable jaw 601 abut against the convex arc edge 1801 of the positioning plate 18, and the loading work is completed. Since the convex arc edge 1801 is concentric with the turntable 4, the convex arc edge 1801 will not interfere with the turntable 4 driving the movable jaw 601 to abut against the convex arc edge 1801 of the positioning plate 18, and the loading work is completed. The pliers head 6 rotates, and before the movable jaw 601 of the movable pliers head 6 disengages from the convex arc edge 1801, the travel switch 14 connected to the clamping cylinder 12 under the pressure plate 13 corresponding to the movable pliers head 6 disengages from the feeding baffle 15, and the intake valve 30 resets, blocking the connection between the intake pipe 28 and the high-pressure gas source, and connecting the clamping cylinder 12 and the outside world, the gas in the clamping cylinder 12 is discharged, and the piston rod after losing the air pressure slides downward under the action of the first return spring 23, driving the pressure plate 13 to clamp the movable pliers head 6. The feeding baffle 15 has a certain length, so that the two slots 7 corresponding to the pressure plate 13 pass through the feeding station and complete the feeding, and then the pressure plate 13 presses down to press the two movable pliers heads 6.

[0029] The pressed movable jaw 6 rotates toward the heating station. When the movable jaw 601 rotates to be close to the high-frequency induction heater 8, the high-frequency induction heater 8 performs induction heating on the movable jaw 601. The heating process continues until the movable jaw 601 rotates away from the high-frequency induction heater 8. The heating time can be adjusted by adjusting the speed of the driving device 5. The heated movable jaw 601 continues to move toward the cooling station. Before reaching the cooling station, the movable jaw 601 is first naturally cooled. When it reaches the cooling station, it enters the spraying range of the coolant spray head 10. The coolant is sprayed onto the movable jaw 601 to quench the movable jaw 601. The quenched movable jaw 6 continues to rotate toward the downstream unloading station. When the movable jaw 6 reaches the unloading station, the travel switch 14 corresponding to the clamping cylinder 12 that clamps the movable jaw 6 just abuts against the unloading baffle 16, and the piston rod of the clamping cylinder 12 is extended again, and the pressing plate 13 moves upward to release the movable jaw 6. Since the turntable 4 is tilted, the movable jaw 6 slides down along the surface of the turntable 4 under the action of its own weight to achieve automatic unloading.

[0030] Some movable jaws 6 are too tightly stuck in the slot 7 to slide down automatically. In this case, the movable jaws 6 can be removed from the slot 7 by the unloading plate 21 driven by the reciprocating unloading cylinder 20. The reciprocating frequency of the unloading cylinder 20 is controlled by the controller 25. Each time a movable jaw 6 is turned, it is extended and retracted once to remove the movable jaw 6.

[0031] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A semi-automatic quenching device for a pipe clamp movable jaw, comprising a frame (1), characterized in that: The frame (1) is connected to a bearing seat (2) arranged obliquely, a rotating shaft (3) is rotatably connected inside the bearing seat (2), the rotating shaft (3) is obliquely extended upward and both ends extend out of the bearing seat (2), a rotating disk (4) is fixedly connected to the upper end of the rotating shaft (3), the rotating disk (4) is perpendicular to the axial direction of the rotating shaft (3), and a driving device (5) for driving the rotating shaft (3) to rotate is connected to the frame (1), a plurality of slots (7) for clamping movable clamps (6) are evenly distributed on the upper surface of the rotating disk (4) in the circumferential direction, and any of the slots (7) extends radially along the rotating disk (4), the highest point of the rotating disk (4) is the loading station, the lowest point of the rotating disk (4) is the unloading station, and the rotating disk (4) is rotated from the upper end to the lower end. A heating station and a cooling station are sequentially arranged from the material feeding station to the lower material feeding station. The heating station is provided with a high-frequency induction heater (8) for heating the movable jaw (601) of the movable clamp head (6). The high-frequency induction heater (8) is suspended above the turntable (4) through a heating bracket (9) and is directly opposite to the movable jaw (601). The heating bracket (9) is connected to the frame (1) or the ground. The cooling station is provided with a coolant spray head (10) for spraying water cooling on the heated movable jaw (601). The coolant spray head (10) is suspended above the turntable (4) through a cooling bracket (11) and is directly opposite to the turntable (4) surface. The cooling bracket (11) is connected to the frame (1) or the ground. The number of the slots (7) is an even number, and each two adjacent slots (7) correspond to a clamping cylinder (12). The clamping cylinder (12) is fixedly connected to the back of the turntable (4). The piston rod of the clamping cylinder (12) vertically passes through the turntable (4) and extends above the turntable (4). The piston rod of the clamping cylinder (12) is located between the two adjacent slots (7). The upper end of the piston rod of the clamping cylinder (12) is fixedly connected to a pressing plate (13), and the pressing plate (13) is opposite to the two adjacent slots (7). The lower end surface of the turntable (4) is connected to a travel switch (14) corresponding to the clamping cylinder (12). The frame (1) is provided with a loading baffle (15) and a discharging baffle that cooperate with the travel switch (14). (16), when any stroke switch (14) rotates to abut against the feeding baffle (15), the stroke switch (14) is turned on, and the pressing cylinder (12) corresponding to the stroke switch (14) just moves to the feeding position, and the piston rod of the pressing cylinder (12) extends; when any stroke switch rotates to abut against the unloading baffle (16), the stroke switch (14) is turned on, and the pressing cylinder (12) corresponding to the stroke switch (14) just moves to the unloading position, and the piston rod of the pressing cylinder (12) extends, and the material slides off. After any stroke switch (14) is separated from the feeding baffle (15), the piston rod of the pressing cylinder (12) retracts, driving the pressing plate (13) to press down, thereby pressing the movable clamp head (6); The lower end of the piston rod of the pressing cylinder (12) extends out of the cylinder body and is connected to a stopper (22); a first return spring (23) is sleeved on the piston rod between the stopper (22) and the cylinder body of the pressing cylinder (12); two ends of the first return spring (23) are respectively in contact with the stopper (22) and the cylinder body of the pressing cylinder (12); the return spring (23) drives the piston rod of the pressing cylinder (12) to move downward to drive the pressure plate (13) to press downward; The frame (1) is connected to a positioning frame (17), the positioning frame (17) is opposite to the loading station, the positioning frame (17) is connected to an arc-shaped positioning plate (18) suspended above the turntable (4), the positioning plate (18) is located at the loading station, the convex arc edge (1801) on the positioning plate (18) is concentric with the turntable (4), and the convex arc edge (1801) of the positioning plate (18) is directly opposite to the movable jaw (601) of the movable clamp head (6).

2. The semi-automatic quenching device for movable jaw of pipe clamp according to claim 1 is characterized in that: The frame (1) is connected to a discharge rack (19), which is opposite to the discharge station of the turntable (4). The discharge rack (19) is connected to a discharge cylinder (20) located above the turntable (4) and extending radially along the turntable (4). The end of the piston rod of the discharge cylinder (20) is connected to a discharge plate (21). The discharge plate (21) is suspended above the turntable (4) and faces the movable jaw (601) of the movable clamp head (6) located at the discharge station. A second return spring (24) is sleeved on the piston rod of the discharge cylinder (20). The discharge cylinder (20) is controlled by a controller (25). The controller (25) controls the discharge cylinder (20) to retract its piston rod at a certain frequency. The second return spring (24) drives the piston rod of the discharge cylinder (20) to move upward.

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