High-precision makeup and breakout machine and method thereof

Abstract

The invention relates to the technical field of oil pipe connection, in particular to a high-precision screwing machine and a method thereof.The high-precision screwing machine comprises a machine frame, a screwing mechanism is arranged on the machine frame, supporting mechanisms are arranged on the two sides of the top end of the machine frame, and the screwing mechanism comprises a clamping assembly arranged at one end of the machine frame; the driving connecting assembly is arranged at the other end of the machine frame and comprises a gear box fixedly installed at the end, away from the supporting base, of the machine frame, and further comprises a reduction gear piece and a first clamping piece which are arranged in the gear box; the oil pipe screwing machine solves the problems that an existing oil pipe screwing machine is insufficient in torsion control precision and poor in oil pipe supporting adaptability, oil pipes with different diameters cannot be effectively supported, and therefore the connecting precision of the oil pipes and couplings is affected.

Description

Technical Field

[0001] The invention relates to the technical field of oil pipe connection, and more particularly to a high-precision screwing machine and a method thereof. Background Art

[0002] In the field of tubing connection, torque control of tubing and coupling connection is crucial. The torque should be neither too much nor too little, and must be within the specified value range to ensure the firmness and sealing of the tubing connection. However, the current tubing threading machine faces some technical challenges in the threading process.

[0003] Traditional tubing tightening machines usually have a floating torque detection device on the clamping assembly to monitor and control the torque. Although this floating torque detection device can reflect the magnitude of the torque to a certain extent, due to the torque loss during the transmission process, the actual tightening torque is often greater than the preset specified value. This excessive torque may not only damage the tubing threads, but also affect the sealing performance of the tubing, and even cause the tubing connection to fail.

[0004] In addition, since the oil pipe may shake or shift due to the torque generated by the rotation of the coupling during the tightening process, this shaking or shifting will affect the alignment of the oil pipe and the coupling, thereby increasing the risk of leakage. Therefore, a support mechanism for the oil pipe is generally provided on one side of the clamping assembly. However, the size of the current support mechanism is generally fixed and cannot effectively support oil pipes of different diameters.

[0005] In order to solve the above problems, a high-precision button tightening machine and method are proposed. Summary of the invention

[0006] In response to the problems existing in the prior art, the present invention provides a high-precision threading machine and method thereof to solve the problems mentioned in the background technology, namely, insufficient torque control accuracy and poor support adaptability of the oil pipe, which make it impossible to effectively support oil pipes of different diameters, thereby affecting the connection accuracy of the oil pipe and the coupling.

[0007] To achieve the above object, the present invention provides the following technical solution: a high-precision button tightening machine, comprising a frame, a button tightening mechanism is arranged on the frame, and a support mechanism is arranged on one side of the top of the frame; The screwing mechanism comprises a clamping assembly arranged at one end of the frame, and a driving connection assembly arranged at the other end of the frame; The drive connection assembly includes a gear box fixedly mounted on one end of the frame away from the support seat, a reduction gear member and a first clamping member arranged in the gear box, and a servo motor arranged on one side of the lower end of the gear box and drivingly connected to the reduction gear member; The reduction gear member includes a first gear disposed in the gear box and fixedly connected to the output shaft of the servo motor, a second gear disposed in the gear box above the first gear and meshing with the first gear, a third gear disposed coaxially with the second gear, a fourth gear disposed inside the gear box and meshing with the third gear, and a fifth gear disposed on the gear box and meshing with the fourth gear, wherein the first gear, the second gear, the third gear, the fourth gear and the fifth gear constitute a reduction gear set; The first clamping member is arranged inside the axis of the fifth gear, and a through hole matching the first clamping member is opened on the gear box.

[0008] The present invention is further configured such that the fifth gear is a ring gear, and the first clamping member is disposed in an inner ring of the fifth gear; The first clamping member includes a first driving block fixedly mounted on the inner wall of the inner ring of the fifth gear, a first clamping block and a first limit block arranged in an annular array in the inner ring of the fifth gear, a first tension spring arranged on the first clamping block, and also includes a first driving disk arranged on both sides of the fifth gear; A slide groove is provided on one side of the fifth gear, and a connecting rod is slidably installed in the slide groove, and the connecting rod is fixedly connected to the first driving disk; One end of the first tension spring away from the first clamping block is fixedly connected to the first driving disk.

[0009] The present invention is further configured such that the clamping assembly includes a support seat slidably mounted on the frame, a second clamping member disposed on the support seat, and driving members disposed on both sides of the second clamping member; The second clamping member includes a clamping seat fixedly mounted on the support seat, a second driving block arranged on the inner wall of the clamping seat, a second clamping block and a second limit block arranged in an annular array inside the clamping seat, and a second tension spring arranged on the second clamping block, and one end of the second tension spring away from the second clamping block is fixedly connected to the driving member; The driving member includes a second driving disk rotatably mounted on both sides of the clamping seat, a connecting plate arranged on one side of the second driving disk, and a cylinder arranged on an end of the connecting plate away from the second driving disk.

[0010] The present invention is further configured such that the support mechanism includes a bracket fixedly mounted on one side of the top end of the frame, a support component movably plugged into the bracket, and a lifting spring arranged at the top end of the bracket and sleeved on the support component.

[0011] The present invention is further configured such that a movable hole is provided on the bracket; The support assembly includes a support rod movably inserted into the movable hole, an arc plate arranged at the top end of the support rod, and an adaptive load-bearing roller arranged on the arc plate; The arc-shaped plate and the support rod are provided with plug-in grooves, and a plug-in rod which is movably matched and plugged with the plug-in groove is fixedly installed in the middle of the bottom end of the adaptive load-bearing roller; Limiting rods are arranged on both sides of the bottom end of the adaptive load-bearing roller, and the limiting rods penetrate the arc plate and extend to below it. A return spring is sleeved on the limiting rods between the adaptive load-bearing roller and the arc plate.

[0012] The present invention is further configured such that a card block slot is provided at the bottom end of the plug-in slot, and the card block slot is connected to the plug-in slot; A first moving block and a second moving block are arranged inside the block slot, and the first moving block and the second moving block are arranged on both sides of the axis of the plug-in slot under the limitation of the plug-in rod; Both sides of the block slot are provided with through-hole slots, and the ends of the first moving block and the second moving block which are away from each other are provided with positioning blocks, and the positioning blocks and the through-hole slots are movably plugged; Side plates are arranged on both sides of the support rod, and positioning grooves are arranged in an array on the side plates. The positioning grooves and positioning blocks are matched and plugged for positioning.

[0013] The present invention is further configured such that a first magnet and a second magnet are respectively disposed on one side of the first moving block and the second moving block that are close to each other, and the magnetic poles of the first magnet and the second magnet are opposite; The upper ends of the first moving block and the second moving block on the side close to each other are both provided with wedge-shaped surfaces. When the first moving block and the second moving block are fitted together, the distance between the top ends of the two wedge-shaped surfaces is smaller than the width of the plug-in slot.

[0014] The present invention is further configured such that a strip groove is provided at the bottom end of the block groove, and a push rod groove is provided at the bottom end of the strip groove, a separation block is slidably installed in the strip groove, and a push rod slidably installed in the push rod groove is provided at the bottom end of the separation block.

[0015] The present invention is further configured such that separation grooves are provided at the lower ends of the sides where the first moving block and the second moving block are in contact with each other, and stoppers are provided at the lower ends of the two groups of separation grooves.

[0016] The present invention also provides the following technical solution: a high-precision buttoning method, comprising the high-precision buttoning machine, and: S1. Adjust the torque of the servo motor according to the required torque of the oil pipe connection; S2, passing one end of the oil pipe through the clamping assembly and close to the driving connection assembly, then placing the other end of the oil pipe on the supporting mechanism, and then starting the driving member so that the clamping assembly clamps and fixes the oil pipe; S3, insert the coupling into the drive connection assembly and connect it with one end of the oil pipe, start the servo motor, so that the drive connection assembly clamps the coupling and tightens it with the oil pipe.

[0017] Compared with the prior art, the present invention provides a high-precision button tightening machine and method thereof, which have the following beneficial effects: 1. The present invention realizes precise control of the tightening torque of the oil pipe by adopting a combination of a reduction gear set and a servo motor. Through a plurality of meshing gears, the torque can be transmitted smoothly and the loss can be reduced, thereby ensuring that the actual tightening torque is consistent with the preset specified value. At the same time, the servo motor has precise torque control capability and can adjust the output torque as needed, thereby realizing precise control of the tightening torque of the oil pipe. This method of precise torque control avoids the influence of excessive or insufficient torque on the connection quality of the oil pipe, and improves the firmness and sealing of the oil pipe connection.

[0018] 2. The present invention supports the oil pipe by providing an adaptively adjustable support mechanism, which can be adaptively adjusted according to the diameter and length of the oil pipe to ensure that the oil pipe maintains a stable posture during the tightening process, thereby ensuring the connection accuracy between the oil pipe and the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a high-precision button tightening machine and a method thereof.

[0020] Figure 2 Schematic diagram of the exploded structure of the drive connection component.

[0021] Figure 3 It is a schematic diagram of the exploded structure of the first clamping member.

[0022] Figure 4 It is a schematic diagram of the front view structure of the first clamping member.

[0023] Figure 5 It is a schematic diagram of the overall structure of the clamping assembly.

[0024] Figure 6 It is a schematic diagram of the exploded structure of the second clamping member.

[0025] Figure 7 A schematic diagram of the structure of the support mechanism.

[0026] Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0027] Fig. 9 A schematic diagram of the exploded structure showing a half section of the supporting mechanism.

[0028] Fig.10 for Fig. 9Enlarged structural diagram at B in the middle.

[0029] In the figure: 1, frame; 2, screw-fastening mechanism; 3, supporting mechanism; 301, bracket; 302, lifting spring; 4, clamping assembly; 401, supporting seat; 5, driving connection assembly; 501, gear box; 502, servo motor; 6, reduction gear; 601, first gear; 602, second gear; 603, third gear; 604, fourth gear; 605, fifth gear; 606, slide; 7, first clamping member; 701, first driving block; 702, first clamping block; 703, first limiting block; 704, first tension spring; 705, first driving disk; 706, connecting rod; 8, second clamping member; 801, clamping seat; 802, second driving block; 803, second clamping block; 804, second limiting block; 805, first Two tension springs; 9. driving member; 901. second driving disk; 902. connecting plate; 903. cylinder; 10. supporting assembly; 1001. supporting rod; 1002. arc plate; 1003. adaptive load-bearing roller; 1004. plug-in slot; 1005. plug-in rod; 1006. limit rod; 1007. reset spring; 1008. block slot; 1009. first moving block; 1010. second moving block; 1011. through-hole slot; 1012. positioning block; 1013. side plate; 1014. positioning slot; 1015. first magnet; 1016. second magnet; 1017. wedge surface; 1018. strip slot; 1019. push rod slot; 1020. separation block; 1021. push rod; 1022. separation slot; 1023. stopper. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] For examples, see Figure 1 - Fig.10, a high-precision buttoning machine and method thereof, comprising a frame 1, a buttoning mechanism 2 is arranged on the frame 1, and a support mechanism 3 is arranged on one side of the top of the frame 1; The fastening mechanism 2 includes a clamping assembly 4 disposed at one end of the frame 1 and a driving connection assembly 5 disposed at the other end of the frame 1; The driving connection assembly 5 includes a gear box 501 fixedly mounted on the frame 1 at one end away from the support base 401, a reduction gear member 6 and a first clamping member 7 arranged in the gear box 501, and a servo motor 502 arranged at one side of the lower end of the gear box 501 and drivingly connected to the reduction gear member 6; The reduction gear 6 includes a first gear 601 disposed in the gear box 501 and fixedly connected to the output shaft of the servo motor 502, a second gear 602 disposed in the gear box 501 above the first gear 601 and meshing with the first gear 601, a third gear 603 disposed coaxially with the second gear 602, a fourth gear 604 disposed in the gear box 501 and meshing with the third gear 603, and a fifth gear 605 disposed on the gear box 501 and meshing with the fourth gear 604. The first gear 601, the second gear 602, the third gear 603, the fourth gear 604 and the fifth gear 605 form a reduction gear set; The first clamping member 7 is disposed inside the axis of the fifth gear 605 , and a through hole matching the first clamping member 7 is opened on the gear box 501 .

[0034] The clamping assembly 4 and the drive connection assembly 5 are coaxially arranged, and the clamping assembly 4 and the drive connection assembly 5 respectively clamp the oil pipe and the coupling to be connected. The clamping assembly 4 is used to clamp the oil pipe to be connected, and the drive connection assembly 5 is used to clamp and rotate the drive coupling and the oil pipe to be connected for threaded connection.

[0035] Specifically, first insert the oil pipe to be connected into the clamping assembly 4, and move one end of the oil pipe to be connected to one side of the driving connection assembly 5, the smaller the distance, the better, then clamp the oil pipe to be connected through the clamping assembly 4, and then insert the coupling into the first clamping piece 7, and align one end of the coupling with one end of the oil pipe, and then set the driving force of the servo motor 502 according to the appropriate torque required for the threaded connection between the oil pipe to be connected and the coupling, and then start the servo motor 502, and drive the first gear 601 to rotate through the output shaft, and then the first gear 601, the second gear 602, the third gear 603, the fourth gear 604 and the fifth gear 605 are meshed for transmission, and the reduction transmission is realized through the gear ratio, the first gear 601, the second gear 602, the third gear 603, the fourth gear 604 and the fifth gear 605 are meshed for transmission, and the gear ratio is used to realize the reduction transmission ... the first gear 601, the second gear 602, the third gear When the fifth gear 605 rotates, it drives the first clamping member 7 to clamp and fix the coupling. After the coupling is clamped and fixed, as the servo motor 502 continues to transmit, the fifth gear 605 drives the first clamping member 7 to continue to rotate, so that the coupling starts to rotate, thereby making the coupling and the oil pipe to be connected contact with the matching threaded ends for threaded tightening. As the oil pipe to be connected and the coupling are tightened and matched, the required torque will become larger and larger. When the set driving force of the servo motor 502 is the same as the tightening torque between the oil pipe to be connected and the coupling, the servo motor 502 cannot be tightened further, so that the tightening torque between the oil pipe to be connected and the coupling is appropriate, and over-tightening or insufficient tightening will not occur.

[0036] Among them, the first gear 601, the second gear 602, the third gear 603, the fourth gear 604 and the fifth gear 605 form a reduction transmission through the gear ratio, the diameter of the first gear 601 is smaller than the diameter of the second gear 602, the diameter of the second gear 602 is larger than the diameter of the third gear 603, the diameter of the third gear 603 is smaller than the diameter of the fourth gear 604, and the diameter of the fourth gear 604 is smaller than the diameter of the fifth gear 605.

[0037] Furthermore, when the length of the oil pipe to be connected is long, the pipe can be supported by the supporting mechanism 3, thereby improving the stability of the oil pipe and making the oil pipe and the coupling tighter when tightened.

[0038] The fifth gear 605 is a ring gear, and the first clamping member 7 is disposed in the inner ring of the fifth gear 605; The first clamping member 7 includes a first driving block 701 fixedly mounted on the inner wall of the inner ring of the fifth gear 605, a first clamping block 702 and a first limit block 703 arranged in an annular array in the inner ring of the fifth gear 605, a first tension spring 704 arranged on the first clamping block 702, and also includes a first driving disk 705 arranged on both sides of the fifth gear 605; A slide groove 606 is provided on one side of the fifth gear 605, and a connecting rod 706 is slidably installed in the slide groove 606, and the connecting rod 706 is fixedly connected to the first driving disk 705; One end of the first tension spring 704 away from the first clamping block 702 is fixedly connected to the first driving disk 705 .

[0039] In the initial state, the first clamping member 7 does not clamp the coupling, and the fifth gear 605 is driven to rotate by the transmission of the reduction gear set under the drive of the servo motor 502. At this time, the rotation of the fifth gear 605 causes the connecting rod 706 to move in the slide slot 606, but does not drive the first driving plate 705 to rotate. The rotation of the fifth gear 605 drives the first driving block 701 to rotate, so that the end of the first clamping block 702 moves from one end of the crescent-shaped first driving block 701 to the middle end position of the first driving block 701. The first clamping block 702 is thereby pushed toward the axial position, so that the coupling is clamped and fixed. After the coupling is clamped and fixed, since the first clamping block 702 can no longer move toward the axial direction, the connecting rod 706 can no longer move in the slide groove 606, thereby causing it to drive the first driving disk 705 to rotate. The rotation of the first driving disk 705 drives the first limit block 703 to rotate, thereby pushing the first clamping block 702 to rotate, thereby causing the coupling to rotate after being clamped, so as to be screwed and connected to the oil pipe to be connected.

[0040] The clamping assembly 4 includes a support base 401 slidably mounted on the frame 1, a second clamping member 8 disposed on the support base 401, and driving members 9 disposed on both sides of the second clamping member 8; The second clamping member 8 includes a clamping seat 801 fixedly mounted on the support seat 401, a second driving block 802 arranged on the inner wall of the clamping seat 801, and also includes a second clamping block 803 and a second limiting block 804 arranged in an annular array inside the clamping seat 801, and a second tension spring 805 arranged on the second clamping block 803, and one end of the second tension spring 805 away from the second clamping block 803 is fixedly connected to the driving member 9; The driving member 9 includes a second driving disk 901 rotatably mounted on both sides of the clamping seat 801 , a connecting plate 902 arranged on one side of the second driving disk 901 , and a cylinder 903 arranged on one end of the connecting plate 902 away from the second driving disk 901 .

[0041] The second driving block 802 is crescent-shaped, and the annular array is arranged on the inner wall of the clamping seat 801, and there is a gap between the second driving blocks 802 in the annular array. When the clamping assembly 4 is in an unclamped state, the end of the second clamping block 803 is located in the gap and fits the inner wall of the clamping seat 801. When the clamping assembly 4 is in a clamped state, the end of the second clamping block 803 is located in the middle of the crescent. The second clamping block 803 and the second limit block 804 are alternately arranged, and the second limit block 804 and the driving member 9 are fixedly connected by bolts. The driving member 9 rotates to drive the second limit block 804 to rotate, thereby driving the second clamping block 803 to move, so that the end of the second clamping block 803 that fits the inner wall of the clamping seat 801 moves along the crescent surface of the second driving block 802, so that the second clamping block 803 moves toward the axial direction during the rotation, thereby realizing the fixed clamping of the oil pipe to be connected.

[0042] The maximum diameter of the second limiting blocks 804 of the annular array is smaller than the minimum diameter of the second driving blocks 802 of the annular array. Therefore, when the second limiting blocks 804 rotate, they will not be affected by the second driving blocks 802 .

[0043] Furthermore, a C-shaped slide rail is provided on the inner wall of the frame 1, and pulleys are provided on both sides of the support seat 401. The support seat 401 slides along its length direction (the axial direction of tightening the oil pipe and the coupling) inside the frame 1 through the matching of the C-shaped rail and the pulley, providing a moving method for the oil pipe and the coupling to approach each other for tightening connection.

[0044] An oil pipe through hole is opened at the center of the second driving disk 901, and the diameter of the oil pipe through hole is the same as the hole diameter of the clamping assembly 4 in the unclamped state. At the same time, the second clamping block 803 and the second limit block 804 arranged in a circular array are stably set inside the clamping seat 801 through the second driving disk 901 on both sides. The connecting plate 902 is fixedly connected to the second driving disk 901, and the telescopic end of the cylinder 903 and the connecting plate 902 are rotatably connected, and the cylinder 903 and the support seat 401 are rotatably connected.

[0045] Specifically, the cylinder 903 is started to push the connecting plate 902, so that the second driving disk 901 rotates, thereby driving the second limit block 804 to rotate, and then the above movement is performed to achieve clamping and fixing of the oil pipe.

[0046] The supporting mechanism 3 includes brackets 301 fixedly mounted on both ends of the frame 1 , a supporting assembly 10 movably plugged into the brackets 301 , and a jacking spring 302 disposed at the top of the bracket 301 and sleeved on the supporting assembly 10 .

[0047] The supporting mechanism 3 is arranged at the top of the bracket 301 and is located on the side of the clamping assembly 4 away from the driving connection assembly 5, and is used to support the oil pipe, thereby improving the stability of the oil pipe and preventing the oil pipe from shaking or shifting during the tightening process, affecting the centering of the oil pipe and the coupling, thereby increasing the risk of leakage.

[0048] Specifically, the bracket 301 and the frame 1 are combined in a trapezoidal arrangement, with the top of the bracket 301 being in a horizontal state. Under the action of the lifting spring 302, the top of the support component 10 movably plugged into the bracket 301 is flush with the axial position of the clamping component 4 in the initial state, and after the gravity of the oil pipe presses down, the lowest position of the top is flush with the bottom end of the diameter of the plug-in hole of the clamping component 4.

[0049] When it is in operation, the oil pipe is first placed on the support assembly 10, and then the support assembly 10 is pressed down by gravity and manual force, and then one end of the oil pipe is inserted into the plug hole of the clamping assembly 4 and docked with the coupling, and then the driving member 9 is started, so that the second clamping member 8 clamps the oil pipe in the center. When it is clamped in the center, the oil pipe will move upward. At this time, the lifting spring 302 will push the support assembly 10 upward, thereby continuing to support the oil pipe.

[0050] The bracket 301 is provided with a movable hole; The support assembly 10 includes a support rod 1001 movably inserted into a movable hole, an arc plate 1002 disposed at the top of the support rod 1001, and an adaptive bearing roller 1003 disposed on the arc plate 1002; The arc plate 1002 and the support rod 1001 are provided with a plug-in slot 1004, and a plug-in rod 1005 is fixedly installed at the middle of the bottom end of the adaptive load-bearing roller 1003 and is movably matched and plugged with the plug-in slot 1004; Limiting rods 1006 are arranged on both sides of the bottom end of the adaptive load-bearing roller 1003 , and the limiting rods 1006 penetrate the arc plate 1002 and extend to below it. A return spring 1007 is sleeved on the limiting rods 1006 between the adaptive load-bearing roller 1003 and the arc plate 1002 .

[0051] The adaptive load-bearing roller 1003 is vertically plugged into the center position of the arc plate 1002 and extends into the support rod 1001. Adaptive pressure rollers are also rotatably installed on both sides of the top of the arc plate 1002, and a torsion spring is provided at the rotating connection of the adaptive pressure roller. The adaptive pressure rollers rotating at both ends and the plug-in adaptive load-bearing rollers 1003 can effectively support oil pipes of different diameters.

[0052] Furthermore, the limiting rod 1006 passes through the arc plate 1002 and extends to one end below it, and an anti-slip block is provided. In the initial state, the return spring 1007 pushes the adaptive load-bearing roller 1003 to move upward, so that the anti-slip block of the limiting rod 1006 contacts the bottom end of the arc plate 1002.

[0053] A card block slot 1008 is provided at the bottom of the plug slot 1004, and the card block slot 1008 is connected to the plug slot 1004; A first moving block 1009 and a second moving block 1010 are disposed inside the block slot 1008, and the first moving block 1009 and the second moving block 1010 are disposed on both sides of the axis of the plug-in slot 1004 under the limitation of the plug-in rod 1005; Both sides of the block slot 1008 are provided with through-hole slots 1011, and the ends of the first moving block 1009 and the second moving block 1010 that are away from each other are provided with positioning blocks 1012, and the positioning blocks 1012 and the through-hole slots 1011 are movably plugged; Side plates 1013 are provided on both sides of the support rod 1001 , and positioning grooves 1014 are arranged in an array on the side plates 1013 . The positioning grooves 1014 and the positioning blocks 1012 are matched and plugged in for positioning.

[0054] After the clamping assembly 4 clamps and fixes the oil pipe, the lifting spring 302 pushes the arc plate 1002 upward according to the different diameters of the oil pipe, so that the adaptive load-bearing roller 1003 contacts the outer wall of the oil pipe, and drives the plug-in rod 1005 to be inserted inward, so that the plug-in rod 1005 pushes the first moving block 1009 and the second moving block 1010 to both sides and separates them, so that the positioning block 1012 passes through the through-hole groove 1011 and the positioning groove 1014 on the side plate 1013 and is plugged in, thereby fixing the position of the support assembly 10 and being able to adaptively support oil pipes of different diameters.

[0055] A first magnet 1015 and a second magnet 1016 are respectively disposed on one side of the first moving block 1009 and the second moving block 1010 that are close to each other, and the magnetic poles of the first magnet 1015 and the second magnet 1016 are opposite; A wedge-shaped surface 1017 is provided on the upper ends of the first moving block 1009 and the second moving block 1010 which are close to each other. When the first moving block 1009 and the second moving block 1010 are fitted together, the distance between the top ends of the two wedge-shaped surfaces 1017 is smaller than the width of the insertion slot 1004 .

[0056] A strip groove 1018 is formed at the bottom of the block groove 1008 , and a push rod groove 1019 is formed at the bottom of the strip groove 1018 . A separation block 1020 is slidably installed in the strip groove 1018 , and a push rod 1021 slidably installed in the push rod groove 1019 is provided at the bottom of the separation block 1020 .

[0057] A protrusion matching with the two wedge-shaped surfaces 1017 is provided at the bottom end of the plug-in rod 1005. In the initial state, the reset spring 1007 pushes the adaptive load-bearing roller 1003 to move upward, and when the anti-slip block of the limit rod 1006 contacts the bottom end of the arc plate 1002, its protrusion matches and engages with the wedge-shaped surfaces 1017 on the first movable block 1009 and the second movable block 1010 which are magnetically attracted together by the first magnet 1015 and the second magnet 1016, so that the first movable block 1009 and the second movable block 1010 are located on both sides of the axis of the plug-in slot 1004.

[0058] The distance between the top ends of the two wedge-shaped surfaces 1017 is smaller than the width of the plug-in slot 1004, so that when the oil pipe is placed on the support assembly 10, it will first push the plug-in rod 1005 downward through the adaptive load-bearing roller 1003. Since the plug-in rod 1005 and the plug-in slot 1004 match, when the plug-in rod 1005 moves downward, it will push the first moving block 1009 and the second moving block 1010 and drive the support rod 1001 to move downward together.

[0059] Furthermore, the push rod 1021 and the separation block 1020 are integrally formed, and the groove diameter of the strip groove 1018 is larger than the groove diameter of the push rod groove 1019. The separation block 1020 is set with a pointed tip at the top, so that when the connecting rod 1005 pushes the first moving block 1009 and the second moving block 1010 and drives the support rod 1001 to move downward together, the first moving block 1009 and the second moving block 1010 that are magnetically attached are separated to both sides through the contact of the pointed tip of the separation block 1020, thereby increasing the distance between the top ends of the wedge-shaped surface 1017, thereby allowing the connecting rod 1005 to continue to move downward by contacting the wedge-shaped surface 1017, thereby continuing to push the first moving block 1009 and the second moving block 1010 to both sides until the positioning block 1012 passes through the through-hole groove 1011 and is plugged into the positioning groove 1014 of the side panel 1013.

[0060] When the clamping assembly 4 is clamping the oil pipe, as the center clamping oil pipe moves upward, the return spring 1007 pushes the adaptive load-bearing roller 1003 to move upward, so that the plug rod 1005 moves upward. Without the isolation of the plug rod 1005, the first moving block 1009 and the second moving block 1010 are close to each other under the suction of the first magnetic block and the second magnetic block, and clamp the separation block 1020, so that the positioning block 1012 is separated from the positioning groove 1014 of the side plate 1013. At this time, the lifting spring 302 drives the support assembly 10 to move upward. When the support When the adaptive load-bearing roller 1003 of the component 10 contacts the oil pipe and drives the connecting rod 1005 to be connected downward again, since the separation block 1020 is clamped between the first movable block 1009 and the second movable block 1010, the spacing between the top ends of the wedge surface 1017 is still greater than the width of the connecting rod 1005, so that the connecting rod 1005 can contact the wedge surface 1017 downward, thereby pushing the first movable block 1009 and the second movable block 1010 to move to both sides, so that the positioning block 1012 is again connected to the positioning groove 1014 of the side plate 1013 to limit the position.

[0061] Separation grooves 1022 are provided at the lower ends of the mutually attached sides of the first moving block 1009 and the second moving block 1010 , and stoppers 1023 are provided at the lower ends of the two sets of separation grooves 1022 .

[0062] After the first moving block 1009 and the second moving block 1010 are attached to each other, the width of the matching notches of the two separation grooves 1022 and the strip groove 1018 are the same, and there is a gap between the two blocking blocks 1023 after the first moving block 1009 and the second moving block 1010 are attached to each other.

[0063] Specifically, the plug-in rod 1005 pushes the first moving block 1009 and the second moving block 1010 to move downward and drives the support rod 1001 to move downward. When the first moving block 1009 and the second moving block 1010 move downward to the position of the stopper 1023, as the first moving block 1009 and the second moving block 1010 continue to move downward, the tip of the separation block 1020 is inserted into the gap between the two stoppers 1023, so that the first moving block 1009 and the second moving block 1010 are separated to both sides. At this time, the separated first moving block 1009 and the second moving block 1010 cannot push the positioning block 1012 out of the through-hole groove 1011. After crossing the separated stopper 1023, the separation block 1020 enters the separation groove 1022 area. At this time, the first moving block 1009 and the second moving block 1010 will be in the first magnetic The iron 1015 and the second magnet 1016 are attracted to each other by the magnetic attraction, so that the bottom end of the separation block 1020 falls on the top of the stop block 1023. At this time, there is still a gap between the first movable block 1009 and the second movable block 1010, and the gap is the separation support of the push rod 1021 on the two stop blocks 1023, so that the distance between the top ends of the two wedge-shaped surfaces 1017 is still greater than the width of the plug-in rod 1005. As a result, when the oil pipe is clamped in the center, the oil pipe moves up, and when the support assembly 10 moves upward under the action of the lifting spring 302, it will drive the separation block 1020 and the push rod 1021 to move up together until they move to the adaptive support position, and the plug-in rod 1005 resists the oil pipe and is inserted again, so that the first movable block 1009 and the second movable block 1010 are separated, and their positioning holes and positioning grooves 1014 are plugged in to limit.

[0064] S1. Adjust the torque of the servo motor 502 according to the required torque of the oil pipe connection; S2, pass one end of the oil pipe through the clamping assembly 4 and close to the driving connection assembly 5, then place the other end of the oil pipe on the supporting mechanism 3, and then start the driving member 9 to make the clamping assembly 4 clamp and fix the oil pipe; S3, insert the coupling into the driving connection assembly 5 and dock it with one end of the oil pipe, start the servo motor 502, so that the driving connection assembly 5 clamps the coupling and tightens it with the oil pipe.

[0065] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, welding is preferred for all fixed connections. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision button tightening machine, characterized by: It comprises a frame (1), a screwing mechanism (2) is provided on the frame (1), and a supporting mechanism (3) is provided on one side of the top end of the frame (1); The fastening mechanism (2) comprises a clamping assembly (4) arranged at one end of the frame (1), and a driving connection assembly (5) arranged at the other end of the frame (1); The driving connection assembly (5) comprises a gear box (501) fixedly mounted on one end of the frame (1), a reduction gear member (6) and a first clamping member (7) arranged in the gear box (501), and a servo motor (502) arranged on one side of the lower end of the gear box (501) and drivingly connected to the reduction gear member (6); The reduction gear member (6) comprises a first gear (601) arranged in the gear box (501) and fixedly connected to the output shaft of the servo motor (502), a second gear (602) arranged in the gear box (501) above the first gear (601) and meshing with the first gear (601), a third gear (603) arranged coaxially with the second gear (602), a fourth gear (604) arranged in the gear box (501) and meshing with the third gear (603), and a fifth gear (605) arranged on the gear box (501) and meshing with the fourth gear (604), wherein the first gear (601), the second gear (602), the third gear (603), the fourth gear (604) and the fifth gear (605) constitute a reduction gear set; The first clamping member (7) is arranged inside the axis of the fifth gear (605), and a through hole matching the first clamping member (7) is provided on the gear box (501).

2. A high-precision button tightening machine according to claim 1, characterized in that: The fifth gear (605) is a ring gear, and the first clamping member (7) is arranged in the inner ring of the fifth gear (605); The first clamping member (7) comprises a first driving block (701) fixedly mounted on the inner wall of the inner ring of the fifth gear (605), a first clamping block (702) and a first limit block (703) arranged in an annular array in the inner ring of the fifth gear (605), a first tension spring (704) arranged on the first clamping block (702), and also comprises a first driving disk (705) arranged on both sides of the fifth gear (605); A sliding groove (606) is provided on one side of the fifth gear (605), and a connecting rod (706) is slidably installed in the sliding groove (606), and the connecting rod (706) is fixedly connected to the first driving disk (705); One end of the first tension spring (704) away from the first clamping block (702) is fixedly connected to the first driving disk (705).

3. The high-precision button tightening machine according to claim 2, characterized in that: The clamping assembly (4) comprises a support base (401) slidably mounted on the frame (1), a second clamping member (8) arranged on the support base (401), and driving members (9) arranged on both sides of the second clamping member (8); The second clamping member (8) comprises a clamping seat (801) fixedly mounted on the support seat (401), a second driving block (802) arranged on the inner wall of the clamping seat (801), and also comprises a second clamping block (803) and a second limit block (804) arranged in an annular array inside the clamping seat (801), and a second tension spring (805) arranged on the second clamping block (803), wherein one end of the second tension spring (805) away from the second clamping block (803) is fixedly connected to the driving member (9); The driving member (9) comprises a second driving disk (901) rotatably mounted on both sides of the clamping seat (801), a connecting plate (902) arranged on one side of the second driving disk (901), and a cylinder (903) arranged at an end of the connecting plate (902) away from the second driving disk (901).

4. The high-precision button tightening machine according to claim 3, characterized in that: The support mechanism (3) comprises a bracket (301) fixedly mounted on one side of the top end of the frame (1), a support assembly (10) movably plugged into the bracket (301), and a lifting spring (302) arranged at the top end of the bracket (301) and sleeved on the support assembly (10).

5. The high-precision button tightening machine according to claim 4, characterized in that: The bracket (301) is provided with a movable hole; The support assembly (10) comprises a support rod (1001) movably inserted into the movable hole, and also comprises an arc-shaped plate (1002) arranged at the top end of the support rod (1001), and an adaptive bearing roller (1003) arranged on the arc-shaped plate (1002); The arc-shaped plate (1002) and the support rod (1001) are provided with a plug-in groove (1004), and a plug-in rod (1005) is fixedly installed at the middle of the bottom end of the adaptive load-bearing roller (1003) and is movably matched and plugged into the plug-in groove (1004); Limiting rods (1006) are arranged on both sides of the bottom end of the adaptive load-bearing roller (1003), and the limiting rods (1006) penetrate the arc-shaped plate (1002) and extend to below it, and a return spring (1007) is sleeved on the limiting rods (1006) and located between the adaptive load-bearing roller (1003) and the arc-shaped plate (1002).

6. The high-precision button tightening machine according to claim 5, characterized in that: A card block slot (1008) is provided at the bottom end of the plug-in slot (1004), and the card block slot (1008) is connected to the plug-in slot (1004); A first moving block (1009) and a second moving block (1010) are arranged inside the block slot (1008), and the first moving block (1009) and the second moving block (1010) are arranged on both sides of the axis of the plug-in slot (1004) under the limitation of the plug-in rod (1005); Both sides of the block slot (1008) are provided with through-hole slots (1011); the ends of the first movable block (1009) and the second movable block (1010) that are away from each other are provided with positioning blocks (1012), and the positioning blocks (1012) and the through-hole slots (1011) are movably plugged; Side panels (1013) are provided on both sides of the support rod (1001), and positioning grooves (1014) are arranged in an array on the side panels (1013), and the positioning grooves (1014) and the positioning blocks (1012) are matched and plugged for positioning.

7. The high-precision button tightening machine according to claim 6, characterized in that: A first magnet (1015) and a second magnet (1016) are respectively arranged on one side of the first moving block (1009) and the second moving block (1010) that are close to each other, and the magnetic poles of the first magnet (1015) and the second magnet (1016) are opposite; The upper ends of the first moving block (1009) and the second moving block (1010) on the side close to each other are both provided with a wedge-shaped surface (1017); when the first moving block (1009) and the second moving block (1010) are fitted together, the distance between the top ends of the two wedge-shaped surfaces (1017) is smaller than the width of the plug-in slot (1004).

8. The high-precision button tightening machine according to claim 7, characterized in that: A strip groove (1018) is provided at the bottom end of the block groove (1008), and a push rod groove (1019) is provided at the bottom end of the strip groove (1018); a separation block (1020) is slidably installed in the strip groove (1018), and a push rod (1021) is provided at the bottom end of the separation block (1020) and is slidably installed in the push rod groove (1019).

9. The high-precision button tightening machine according to claim 8, characterized in that: Separation grooves (1022) are provided at the lower ends of the mutually abutting sides of the first moving block (1009) and the second moving block (1010), and stoppers (1023) are provided at the lower ends of the two groups of separation grooves (1022).

10. A high-precision buckle tightening method, characterized in that: A high-precision button tightening machine comprising any one of claims 1 to 9, and S1, adjusting the torque of the servo motor (502) according to the required torque of the oil pipe connection; S2, passing one end of the oil pipe through the clamping assembly (4) and close to the driving connection assembly (5), then placing the other end of the oil pipe on the supporting mechanism (3), and then starting the driving member (9) so that the clamping assembly (4) clamps and fixes the oil pipe; S3, inserting the coupling into the driving connection assembly (5) and docking it with one end of the oil pipe, starting the servo motor (502), so that the driving connection assembly (5) clamps the coupling and tightens it with the oil pipe.

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