A re-entrant flow-drill screwing device

Abstract

The application discloses a return type flow drill screwing device, relates to the technical field of automatic screwing, and comprises a rack, a stress top plate, a torsion driving mechanism, a pressure driving mechanism, a guide rod, a pre-pressing mechanism, a mounting seat, a nail supply mechanism and a floating clamping mechanism, the stress top plate is fixedly arranged at the top of the rack, the torsion driving mechanism is arranged at the bottom of the stress top plate, the pressure driving mechanism is arranged on the rack, an avoiding area avoiding the pressure driving mechanism is arranged in the stress top plate, and the guide rod is arranged at the lifting end of the pressure driving mechanism and is in transmission connection with the torsion driving mechanism. The torsion driving mechanism is arranged at the bottom of the stress top plate, the pressure driving mechanism is arranged on the rack and located in the avoiding area of the stress top plate, the height of the screwing device can be controlled to be less than 600 mm, the height of the screwing device is reduced, and therefore, the screwing device is convenient for automatic screwing operation in a low space.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automatic screwing, and in particular to a folding back flow drill screwing device. BACKGROUND

[0002] The automatic screwing equipment realizes rapid and accurate nail feeding, automatic docking and locking through a precise mechanical structure and an intelligent control system, greatly reduces manual operation, and improves locking consistency and production efficiency. The automatic screwing equipment is widely applied to electronic, home appliance and automobile part industries.

[0003] At present, the patent application CN119115507A discloses a screw tightening device for setting a screw, which comprises a rack, a nail feeding device, a floating prevention engagement device, a main pressure track, an engagement linkage device, a tightening guide rod, a main pressure cylinder, a torque driving device, a pre-pressing cylinder and a pre-pressing track. The main pressure cylinder and the torque driving device are fixedly installed above a stress bottom plate, and the rack, the engagement linkage device and the tightening guide rod are installed below the stress bottom plate. The torque driving device drives the tightening guide rod to rotate through the engagement linkage device, and the main pressure cylinder drives the tightening guide rod to move up and down through the engagement linkage device, so that the bottom end of the tightening guide rod can drive the screw to be automatically locked.

[0004] The screw tightening device is a vertical type, and the height thereof is usually greater than 820 mm, so the screw tightening device is suitable for narrow space use. When the automatic screwing is applied to a low space, the vertical screw tightening device cannot be used in the low space due to the excessive height of the screw tightening device. SUMMARY

[0005] In order to facilitate the automatic screwing of the screwing device in a low space, the application provides a folding back flow drill screwing device.

[0006] The folding back flow drill screwing device provided by the application adopts the following technical scheme:

[0007] The folding back flow drill screwing device comprises a rack, a stress top plate, a torque driving mechanism, a pressure driving mechanism, a guide rod, a pre-pressing mechanism, a mounting seat, a nail feeding mechanism and a floating clamping mechanism. The stress top plate is fixedly arranged at the top of the rack. The torque driving mechanism is arranged at the bottom of the stress top plate. The pressure driving mechanism is arranged on the rack. An avoiding area is arranged in the stress top plate to avoid the pressure driving mechanism. The guide rod is arranged at the lifting end of the pressure driving mechanism and is in transmission connection with the torque driving mechanism. The pre-pressing mechanism is arranged in the rack. The mounting seat is arranged at the lifting end of the pre-pressing mechanism. The floating clamping mechanism is arranged on the mounting seat. The nail feeding mechanism is arranged on the stress top plate and the mounting seat and is used for feeding the screw into the floating clamping mechanism. The bottom end of the guide rod extends into the floating clamping mechanism and is in butt joint with the screw. After the floating clamping mechanism releases the clamping restriction on the screw, the guide rod drives the screw to be automatically screwed.

[0008] By adopting the above technical solution, the robotic arm moves the screw-connecting device to the working position. The pre-compression mechanism drives the floating clamping mechanism to descend via the mounting base, so that the bottom end of the floating clamping mechanism abuts against the connected part. The screw is fed into the floating clamping mechanism through the screw feeding mechanism. The floating clamping mechanism clamps and limits the screw. The pressure drive mechanism drives the guide rod to descend. The bottom end of the guide rod first aligns with the screw, and then drives the screw to move and abut against the connected part. Subsequently, the floating clamping mechanism releases the clamping limit on the screw. The torque drive mechanism and the pressure drive mechanism work together on the guide rod, which descends while rotating, thus enabling automatic screw-connecting operations. With this configuration, the torque drive mechanism is placed at the bottom of the load-bearing top plate, and the pressure drive mechanism is placed on the frame and located in the clearance area of ​​the load-bearing top plate. This allows the height of the screw-connecting device to be controlled within 600mm, reducing the height of the screw-connecting device and facilitating automatic screw-connecting operations in low-ceiling spaces.

[0009] Preferably, the pressure driving mechanism includes a first driving component, a lifting frame, a lifting seat, and a rotating sleeve. The first driving component is fixedly mounted on the side wall of the frame. The lifting frame is slidably mounted on the side wall of the frame and fixedly connected to the driving end of the first driving component. The lifting seat is fixedly mounted on the lifting frame. The rotating sleeve is rotatably mounted at the bottom of the lifting seat. The guide rod is mounted at the bottom end of the rotating sleeve, and the driving end of the torque driving mechanism is slidably mounted inside the rotating sleeve.

[0010] By adopting the above technical solution, the first driving component drives the lifting frame to move up and down, the lifting frame drives the lifting seat to move up and down, the lifting seat drives the rotating sleeve to move up and down, and thus drives the guide rod to move up and down. During the process of the rotating sleeve moving up and down, it slides on the driving end of the torque drive mechanism, thereby transmitting torque.

[0011] Preferably, the torque drive mechanism includes a second drive member, a gearbox, and a drive rod. The second drive member is fixedly mounted on the bottom wall of the load-bearing top plate. The drive rod is rotatably mounted on the bottom wall of the load-bearing top plate. The bottom end of the drive rod passes through the lifting seat and slides inside the rotating sleeve. The gearbox is mounted on the top wall of the load-bearing top plate. The input end of the gearbox is connected to the second drive member, and the output end is connected to the drive rod.

[0012] By adopting the above technical solution, the second driving component drives the driving rod to rotate through the gearbox, the driving rod drives the rotating sleeve to rotate, and thus drives the guide rod to rotate.

[0013] Preferably, two first recesses are formed on the side wall of the frame, and a first guide rail is fixedly installed in each of the two first recesses. A first slider is slidably installed on the first guide rail, and the lifting frame is fixedly connected to the first slider.

[0014] By adopting the above technical solution, when the first driving component drives the lifting frame to move up and down, the lifting frame drives the first slider to slide on the first guide rail, making the lifting and lowering movement of the guide rod more stable. At the same time, the first guide rail is installed in the first groove of the frame, making the distance between the axis of the guide rod and the frame shorter, thereby improving the stability of the guide rod when screwed together.

[0015] Preferably, the pre-compression mechanism includes a third driving component, a connecting block, and a lifting block. The third driving component is fixedly installed inside the frame, the connecting block is fixedly installed at the driving end of the third driving component, the lifting block is fixedly installed on the connecting block, a second recess is provided on the side wall of the lifting block, a second guide rail is fixedly installed in the second recess, a second slider is fixedly installed on the side wall of the frame, the second guide rail is slidably installed in the second slider, and the lifting block is fixedly connected to the mounting base.

[0016] By adopting the above technical solution, the third driving component drives the lifting block to move up and down through the connecting block. The lifting block drives the floating clamping mechanism to move up and down through the mounting seat. At the same time, the lifting block drives the second guide rail to slide in the second slider, making the lifting and lowering movement of the floating clamping mechanism more stable. The second guide rail is installed in the second groove of the lifting block, making the distance between the axis of the guide rod and the frame shorter, thereby improving the stability of the guide rod when screwed.

[0017] Preferably, the nail feeding mechanism includes a fixing block, an upper nail feeding tube, a nail feeding sleeve, and a lower nail feeding tube. The fixing block is fixedly mounted on the top plate, the upper nail feeding tube is fixedly connected to the fixing block, the nail feeding sleeve is fixedly mounted in the mounting base, the bottom end of the upper nail feeding tube is slidably inserted into the nail feeding sleeve, the lower nail feeding tube is inclinedly mounted at the bottom of the mounting base, the top end of the lower nail feeding tube is connected to the nail feeding sleeve, and the bottom end is connected to the floating clamping mechanism.

[0018] By adopting the above technical solution, the screw is fed into the upper screw supply tube by the screw feeding device, and the screw is fed into the floating clamping mechanism through the screw supply sleeve and the lower screw supply tube, thereby completing the automatic screw feeding. When the pre-pressing mechanism drives the mounting seat to move up and down, the mounting seat drives the screw supply sleeve to slide at the bottom of the upper screw supply tube, so that the upper screw supply tube will not bend.

[0019] Preferably, the floating clamping mechanism includes a nail receiving seat, a movable frame, two clamping arms, a fourth driving member, clamping blocks, a first elastic member, and a second elastic member. The nail receiving seat is fixedly mounted on the mounting base, and a threaded channel is formed inside the nail receiving seat. The bottom end of the guide rod slides within the threaded channel. The discharge end of the nail feeding mechanism is connected to the threaded channel of the nail receiving seat. The movable frame is slidably mounted on the nail receiving seat. The first elastic member is mounted on the nail receiving seat and is used to push the movable frame to move upward. The two clamping arms are rotatably mounted on both sides of the movable frame. The two clamping blocks are fixedly mounted at the bottom of the two clamping arms and located at the bottom end of the threaded channel. The two second elastic members are mounted on both sides of the movable frame and are used to drive the two clamping arms to rotate and open. The fourth driving member is mounted on the mounting base and is used to drive the two clamping arms to rotate and close. A receiving groove for accommodating screw heads is formed inside the clamping block, and a receiving hole for accommodating screw bodies is formed at the bottom of the receiving groove on the clamping block.

[0020] By adopting the above technical solution, the fourth driving component drives the two clamping arms to rotate and close. The two clamping arms drive the two clamping blocks to move to the bottom of the screw connection channel. The screw is delivered into the screw connection channel of the screw receiving seat. The screw falls from the screw connection channel into the two clamping blocks, and the screw body passes through the receiving hole. The screw head is located in the receiving groove. After the guide rod moves down, it connects with the screw and pushes the clamping block to move down through the screw. The clamping block moves on the screw receiving seat through the clamping arms to drive the moving frame until the bottom of the screw abuts against the connected part. Then, the fourth driving component resets, and the two second elastic elements drive the two clamping arms to rotate and open. The two clamping arms drive the two clamping blocks to move away from each other and release the clamping limit on the screw. The first elastic element drives the clamping arms and clamping blocks to rise and reset through the moving frame.

[0021] Preferably, a drive wheel is rotatably mounted on the side wall of the clamping block, the drive wheel abutting against the outer wall of the screw seat. A driven wheel is rotatably mounted inside the clamping block. A bevel gear set connecting the drive wheel and the driven wheel is mounted inside the clamping block. A connecting frame is slidably mounted inside the clamping block. Rollers are rotatably mounted at both ends of the connecting frame. A synchronous belt is rotatably mounted on the driven wheel and the two rollers. An annular chamfer is formed at the top of the outer wall of the roller. A third elastic element is mounted inside the clamping block. The third elastic element pushes the connecting frame to move and moves the roller to the receiving groove to abut against the outer wall of the screw head. A push rod is rotatably mounted on the connecting frame. The end of the push rod away from the connecting frame is inclined upward and extends into the receiving groove. A cutter head is provided at the bottom of the guide rod. An internal hexagonal groove is formed at the bottom of the cutter head. A hexagonal block is formed inside the screw head. When the hexagonal block is inserted into the internal hexagonal groove, the cutter head pushes the connecting frame to move through the push rod. The connecting frame drives the roller to move and separates the roller from the screw head.

[0022] By adopting the above technical solution, the third elastic element inside the clamping block pushes the rollers to move into the receiving groove through the connecting frame. When the screw falls into the clamping block, the screw head is located on the four rollers. The guide rod drives the cutting head to move downward and contact the screw head, pushing the screw downward. Under the action of the annular chamfer, the screw head drives the four rollers to move outward, so that the four rollers can abut against the outer peripheral sidewall of the screw head. If the inner hexagonal groove of the cutting head is not fully engaged with the hexagonal block of the screw, the cutting head does not contact the push rod. As the guide rod pushes the two clamping blocks downward through the screw, the clamping blocks drive the drive wheel downward. The drive wheel moves on the outer surface of the screw receiving seat and drives the driven wheel to rotate through the bevel gear set. The driven wheel drives the roller to rotate through the synchronous belt. The four rollers rotate synchronously and drive the screw to rotate, so that the inner hexagonal groove of the cutting head and the hexagonal block of the screw can be fully engaged. After the cutting head and the screw are fully engaged, the cutting head moves to contact the push rod and drives the connecting frame to move through the push rod. The connecting frame then drives the rollers into the clamping block, so that the rollers are separated from the screw.

[0023] Preferably, two racks are fixedly provided on the outer wall of the screw seat, and multiple first teeth are provided on the outer wall of the drive wheel. The first teeth mesh with the racks, and multiple second teeth are provided on the outer wall of the roller. Multiple grooves are formed on the outer wall of the screw head, and the second teeth are moved and engaged in the grooves.

[0024] By adopting the above technical solution, when the clamping block drives the drive wheel to move downward, the drive wheel meshes with the rack through the first tooth, making the rotation of the drive wheel more stable. When the roller rotates, it is engaged in the groove through the second tooth to rotate the screw, thereby facilitating the rotation of the screw.

[0025] Preferably, a tensioning block is slidably disposed within the clamping block, a tensioning wheel is rotatably disposed on the tensioning block, the tensioning wheel abuts against the timing belt, and a fourth elastic element for pushing the tensioning block to move is disposed within the clamping block.

[0026] By adopting the above technical solution, when the connecting frame drives the roller to move, the fourth elastic element drives the tensioning wheel to move through the tensioning block, so that the synchronous belt can always be in a tensioned state, thereby making the roller rotation more stable.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By placing the torque drive mechanism at the bottom of the load-bearing top plate and the pressure drive mechanism on the frame and within the clearance area of ​​the load-bearing top plate, the height of the screw-connecting device can be controlled within 600mm, thus reducing the height of the screw-connecting device and facilitating automatic screw-connecting operations in low spaces.

[0029] 2. The lifting frame is driven to move up and down by the first driving component, the lifting frame drives the lifting seat to move up and down, the lifting seat drives the rotating sleeve to move up and down, and thus drives the guide rod to move up and down. During the movement of the rotating sleeve, it slides on the driving end of the torque drive mechanism, thereby transmitting torque.

[0030] 3. The first and second recesses shorten the distance between the guide rod's axis and the frame, thereby improving the stability of the guide rod during screw connection. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the reversible flow drill screw connection device in Embodiment 1 of this application;

[0032] Figure 2 This is a partial structural schematic diagram of the reversible flow drill screw connection device in Embodiment 1 of this application, to highlight the pre-compression mechanism;

[0033] Figure 3 This is a partial structural schematic diagram of the reversible flow drill screw connection device in Embodiment 1 of this application, to highlight the second slider;

[0034] Figure 4 For this application Figure 1 Enlarged view of point A in the middle;

[0035] Figure 5 For this application Figure 3 Enlarged view of point B in the middle;

[0036] Figure 6 This is a partial structural schematic diagram of the reversible flow drill screw connection device in Embodiment 1 of this application, to highlight the screw supply mechanism;

[0037] Figure 7 This is a partial structural schematic diagram of the reversible flow drill screwing device in Embodiment 1 of this application, to highlight the floating clamping mechanism;

[0038] Figure 8 This is a partial exploded view of the reversible flow drill bolting device in Embodiment 1 of this application;

[0039] Figure 9 This is a partial exploded view of the reversible flow drill bolting device in Embodiment 1 of this application, highlighting the hexagonal block;

[0040] Figure 10 This is a partial exploded view of the reversible flow drill screw connection device in Embodiment 1 of this application, highlighting the internal hexagonal groove;

[0041] Figure 11 This is a partial structural schematic diagram of the reversible flow drill screw connection device in Embodiment 2 of this application;

[0042] Figure 12 This is a partial structural cross-sectional view of the reversible flow drill bolting device in Embodiment 2 of this application;

[0043] Figure 13 For this application Figure 12 Enlarged view of point C in the middle;

[0044] Figure 14 This is a partial structural cross-sectional view of the reversible flow drill screw connection device in Embodiment 2 of this application, to highlight the state where the drill bit and screw are not connected;

[0045] Figure 15 For this application Figure 14 Enlarged diagram of point D in the middle.

[0046] Reference numerals: 1. Frame; 2. Load-bearing top plate; 3. Torque drive mechanism; 31. Second drive component; 32. Gearbox; 33. Drive rod; 4. Pressure drive mechanism; 41. First drive component; 42. Lifting frame; 43. Lifting seat; 44. Rotating sleeve; 5. Guide rod; 6. Pre-compression mechanism; 61. Third drive component; 62. Connecting block; 63. Lifting block; 7. Mounting seat; 8. Nail feeding mechanism; 81. Fixing block; 82. Upper nail feeding tube; 83. Nail feeding sleeve; 84. Lower nail feeding tube; 9. Floating clamping mechanism; 91. Nail receiving seat; 92. Moving frame; 93. Clamping arm; 94. Fourth drive component; 95. Clamping block; 96. First elastic element; 97. Second elastic element; 10. Clearance area; 11. Screw; 12. First sink groove; 13. First guide rail; 14. First slider; 15. Second sink groove; 16. Second guide rail; 17. Second slider; 18. Screw connection channel; 19. Receiving groove; 20. Receiving hole; 21. Drive wheel; 22. Driven wheel; 23. Bevel gear set; 24. Connecting frame; 25. Roller; 26. Synchronous belt; 27. Annular chamfer; 28. Third elastic element; 29. ​​Push rod; 30. Cutting head; 34. Internal hexagonal groove; 35. Hexagonal block; 36. Rack; 37. First tooth body; 38. Second tooth body; 39. Groove; 40. Tensioning block; 45. Tensioning wheel; 46. Fourth elastic element; 47. Pressure nozzle; 48. Force-bearing base plate; 49. Connecting plate; 50. Push block; 51. Guide wheel. Detailed Implementation

[0047] The following is in conjunction with the appendix Figures 1-15 This application will be described in further detail.

[0048] This application discloses a reversible flow drill screw connection device.

[0049] Example 1:

[0050] Reference Figure 1 , Figure 2 and Figure 3A reversible flow drill bolting device includes a frame 1, a load-bearing top plate 2, a torque drive mechanism 3, a pressure drive mechanism 4, a guide rod 5, a pre-loading mechanism 6, a mounting base 7, a bolt supply mechanism 8, and a floating clamping mechanism 9. The frame 1 is composed of four plates forming a rectangle, which are then sequentially fixed together with bolts. The frame 1 is fixedly mounted on a robotic arm, and the load-bearing top plate 2 is fixedly mounted on the top of the frame 1.

[0051] The torque drive mechanism 3 is installed at the bottom of the load-bearing top plate 2, and the pressure drive mechanism 4 is installed on the side wall of the frame 1. A clearance area 10 is provided in the middle of the load-bearing top plate 2, and the top of the pressure drive mechanism 4 is located within the clearance area 10. The guide rod 5 is installed at the lifting end of the pressure drive mechanism 4, and the guide rod 5 is connected to the rotating end of the torque drive mechanism 3.

[0052] The pre-compression mechanism 6 is installed inside the frame 1, and the mounting base 7 is fixedly installed on the lifting end of the pre-compression mechanism 6. The floating clamping mechanism 9 is installed at the bottom of the mounting base 7. The bottom end of the guide rod 5 extends into the floating clamping mechanism 9, and the bottom end of the floating clamping mechanism 9 is fixedly installed with a pressure nozzle 47. The nail feeding mechanism 8 is installed on the mounting base 7 and the load-bearing top plate 2. The output end of the nail feeding mechanism 8 is connected to the floating clamping mechanism 9, and the input end is connected to the nail feeding device.

[0053] During automatic screw-fitting, the robotic arm carries the screw-fitting device to the designated workstation via the frame 1. The pre-pressing mechanism 6 drives the floating clamping mechanism 9 downwards via the mounting base 7, bringing the pressure nozzle 47 into contact with the workpiece. Subsequently, the screw feeding mechanism 8 feeds the screw 11 into the floating clamping mechanism 9, which then clamps and positions the screw 11. The pressure drive mechanism 4 pushes the guide rod 5 downwards, with the bottom end of the guide rod 5 first engaging with the screw 11, then moving the screw 11 downwards until it contacts the workpiece. At this point, the floating clamping mechanism 9 releases its grip on the screw 11. Then, the torque drive mechanism 3 and the pressure drive mechanism 4 work together to continuously press down on the guide rod 5 while it rotates, thus achieving automatic screw-fitting.

[0054] The structural design of the screw-connecting device places the torque drive mechanism 3 below the load-bearing top plate 2, while the pressure drive mechanism 4 is mounted on the frame 1 and located within the clearance area 10 of the load-bearing top plate 2, thereby controlling the height of the entire screw-connecting device to below 600mm. This compact design significantly reduces the overall height of the screw-connecting device, making it suitable for automated screw-connecting operations in low-ceilinged spaces.

[0055] Specifically, the pressure drive mechanism 4 includes a first drive component 41, a lifting frame 42, a lifting seat 43, and a rotating sleeve 44. A load-bearing base plate 48 is bolted to the side wall of the frame 1, and the first drive component 41 is fixedly mounted on the load-bearing base plate 48. In this application, the first drive component 41 can be a cylinder. A first recess 12 is provided vertically on the side wall of the frame 1, and two first recesses 12 are symmetrically provided horizontally.

[0056] Reference Figure 1 and Figure 4 The frame 1 is fixedly installed with first guide rails 13 in both first sinks 12, and two first sliders 14 are slidably installed on each first guide rail 13. The lifting frame 42 is fixedly installed on the four first sliders 14, and the driving end of the first driving member 41 is fixedly connected to the lifting frame 42. The lifting seat 43 is fixedly installed on the side wall of the lifting frame 42 away from the frame 1, the rotating sleeve 44 is rotatably installed on the bottom wall of the lifting seat 43, and the guide rod 5 is fixedly installed on the bottom of the rotating sleeve 44.

[0057] The first driving component 41 drives the lifting frame 42 to move up and down, the lifting frame 42 drives the lifting seat 43 to move up and down, the lifting seat 43 drives the rotating sleeve 44 to move up and down, and the rotating sleeve 44 drives the guide rod 5 to move up and down. During the movement of the lifting frame 42, the first slider 14 slides on the first guide rail 13, making the up and down movement of the guide rod 5 more stable. At the same time, the first guide rail 13 is embedded in the first recess 12 of the frame 1, which effectively shortens the distance between the axis of the guide rod 5 and the frame 1, thereby enhancing the overall stability during screw connection.

[0058] Reference Figure 1 Specifically, the torque drive mechanism 3 includes a second drive member 31, a gearbox 32, and a drive rod 33. The second drive member 31 is fixedly mounted on the bottom wall of the load-bearing top plate 2, and the drive rod 33 is rotatably mounted on the bottom wall of the load-bearing top plate 2. The bottom end of the drive rod 33 passes through the lifting seat 43 and slides within the rotating sleeve 44. The gearbox 32 is fixedly mounted on the top wall of the load-bearing top plate 2. The drive end of the second drive member 31 is connected to the input end of the gearbox 32, and the drive rod 33 is connected to the output end of the gearbox 32. In this application, the second drive member 31 can be selected as a servo motor.

[0059] The second driving component 31 drives the driving rod 33 to rotate via the transmission 32. The driving rod 33 drives the rotating sleeve 44 to rotate, and the rotating sleeve 44 in turn drives the guide rod 5 to rotate. When the pressure driving mechanism 4 drives the guide rod 5 to move up and down, the rotating sleeve 44 slides up and down on the driving rod 33, thereby ensuring that the driving force of the driving rod 33 can be stably transmitted to the guide rod 5.

[0060] Reference Figure 2 and Figure 3Specifically, the pre-compression mechanism 6 includes a third driving component 61, a connecting block 62, and a lifting block 63. The third driving component 61 is fixedly installed on the inner side wall of the frame 1, and the top of the third driving component 61 is located within the clearance area 10 of the load-bearing top plate 2. The connecting block 62 is fixedly installed on the driving end of the third driving component 61, the top of the lifting block 63 is fixedly connected to the connecting block 62, and the bottom of the lifting block 63 is fixedly connected to the mounting base 7. In this application, the third driving component 61 can be a cylinder. The third driving component 61 drives the mounting base 7 to move up and down through the connecting block 62 and the lifting block 63, thereby driving the floating clamping mechanism 9 to move up and down.

[0061] Reference Figure 3 and Figure 5 A second recess 15 is provided on the side wall of the lifting block 63. A second guide rail 16 is fixedly installed in the second recess 15 within the lifting block 63. A second slider 17 is fixedly installed on the outer side wall of the frame 1, and the second guide rail 16 is slidably mounted on the second slider 17. When the lifting block 63 moves up and down, it drives the second guide rail 16 to slide within the second slider 17, making the up and down movement of the floating clamping mechanism 9 more stable. At the same time, the second guide rail 16 is embedded in the second recess 15 of the lifting block 63, which effectively shortens the distance between the axis of the guide rod 5 and the frame 1, thereby enhancing the overall stability during screw connection.

[0062] Reference Figure 6 Specifically, the nail feeding mechanism 8 includes a fixing block 81, an upper nail feeding tube 82, a nail feeding sleeve 83, and a lower nail feeding tube 84. The fixing block 81 is fixedly installed on the load-bearing top plate 2 by bolts. The upper nail feeding tube 82 is fixedly installed on the fixing block 81 and located within the clearance area 10 of the load-bearing top plate 2. The nail feeding sleeve 83 is fixedly installed inside the mounting base 7 and passes through the mounting base 7. The lower nail feeding tube 84 is installed at the bottom of the fixing base.

[0063] The top end of the upper nail feeding tube 82 is connected to the nail feeding device, and the bottom end is slidably inserted into the nail feeding sleeve 83. The top end of the lower nail feeding tube 84 is connected to the nail feeding sleeve 83, and the bottom end is connected to the floating clamping mechanism 9. The nail feeding device feeds the screw 11 into the upper nail feeding tube 82, and the screw 11 is fed into the floating clamping mechanism 9 in sequence through the nail feeding sleeve 83 and the lower nail feeding tube 84.

[0064] Reference Figure 7 and Figure 8 Specifically, the floating clamping mechanism 9 includes a pin receiving seat 91, a movable frame 92, two clamping arms 93, a fourth driving member 94, a clamping block 95, a first elastic member 96, and a second elastic member 97. The pin receiving seat 91 is fixedly installed at the bottom of the mounting base 7 via two connecting plates 49. A through screw channel 18 is formed vertically inside the pin receiving seat 91, and the bottom end of the guide rod 5 extends into the screw channel 18. The bottom of the lower pin supply tube 84 is connected to the pin receiving seat 91 and communicates with the screw channel 18.

[0065] The movable frame 92 is slidably mounted on the mounting base 91 in a vertical direction, and two first elastic elements 96 are mounted on both sides of the movable frame 92 in the width direction. Two push blocks 50 are fixedly mounted inside the movable frame 92 by bolts. The bottom ends of the two first elastic elements 96 abut against the movable frame 92, and their top ends abut against the two push blocks 50. In this application, the first elastic elements 96 can be springs, and the first elastic elements 96 push the movable frame 92 upwards via the blocks.

[0066] Two clamping arms 93 are rotatably mounted on both sides of the movable frame 92, and a fourth driving member 94 is fixedly mounted on the side wall of the mounting base 7. In this application, the fourth driving member 94 can be selected as a finger cylinder. Guide wheels 51 are rotatably mounted on the top of each of the two clamping arms 93, and the two guide wheels 51 abut against the two driving fingers of the fourth driving member 94. When the fourth driving member 94 controls the two driving fingers to move away from each other, the driving fingers drive the two clamping arms 93 to rotate and close via the guide wheels 51.

[0067] Two second elastic elements 97 are installed on both sides of the movable frame 92. In this application, the second elastic elements 97 can be springs. The ends of the two second elastic elements 97 that are close to each other abut against the movable frame 92, and the ends that are far apart from each other abut against the two clamping arms 93 respectively. When the fourth driving member 94 controls the two driving fingers to move in the direction of approaching each other, the two second elastic elements 97 can push the two clamping arms 93 to rotate and open.

[0068] Two clamping blocks 95 are fixedly installed on the top of two clamping arms 93. Each clamping arm 93 has a receiving groove 19 on its side wall that is close to each other. The receiving groove 19 is used to receive the head of the screw 11. Each clamping arm 93 has a receiving hole 20 at the bottom of the receiving groove 19. The receiving hole 20 is used to receive the body of the screw 11.

[0069] Reference Figure 9 and Figure 10 A cutting head 30 is fixedly installed at the bottom of the guide rod 5. The bottom of the cutting head 30 has an internal hexagonal groove 34, and the top of the screw head 11 has a hexagonal block 35. When the hexagonal block 35 on the top of the screw head 11 enters the internal hexagonal groove 34 of the cutting head 30, the cutting head and the screw are engaged.

[0070] The implementation principle of the reversible flow drilling screw-connecting device in this application embodiment is as follows: During automatic screw-connecting operations, the robotic arm carries the screw-connecting device to the designated work position via the frame 1. The third driving component 61 drives the mounting base 7 to move up and down via the connecting block 62 and the lifting block 63, which in turn drives the floating clamping mechanism 9 to move down, so that the pressure nozzle 47 contacts the connected part. Subsequently, the screw feeding device feeds the screw 11 into the upper screw feeding tube 82. The screw 11 passes through the screw feeding sleeve 83 and the lower screw feeding tube 84 in sequence and is fed into the screw-connecting channel 18 of the screw receiving seat 91. Then, the screw falls from the screw-connecting channel 18 between the two clamping blocks 95. At this time, the screw head of the screw 11 is located in the receiving groove 19, and the screw body of the screw 11 is located in the receiving hole 20, thereby clamping and positioning the screw 11. Subsequently, the first drive unit 41 drives the guide rod 5 to descend via the lifting frame 42, lifting seat 43, and rotating sleeve 44. The cutting head 30 at the bottom of the guide rod 5 first engages with the screw 11, then drives the screw 11 to move downward until it contacts the connected part. During the downward movement of the screw 11, the clamping block 95, clamping arm 93, and moving frame 92 will descend together, ensuring that the screw 11 remains clamped and positioned throughout its descent. When the bottom of the screw 11 abuts against the connected part, the fourth drive unit 94 controls the two drive fingers to move towards each other, causing the two second elastic elements 97 to push the two clamping arms 93 to rotate and open. The two clamping arms 93 then drive the two clamping blocks 95 to move away from each other, thereby releasing the clamp on the screw 11. Then, the torque drive mechanism 3 and the pressure drive mechanism 4 work together to make the guide rod 5 continuously press down while rotating, thus achieving automatic screw connection.

[0071] Example 2:

[0072] Reference Figure 11 The difference between this embodiment and Embodiment 1 is that a drive wheel 21 is rotatably mounted on the sidewalls of the two clamping blocks 95 that are far apart from each other. Multiple first teeth 37 are formed at equal intervals along the outer sidewall of the drive wheel 21 in its circumferential direction. Two racks 36 are fixedly mounted on the pin holder 91 and the pressure nozzle 47. The two first teeth 37 mesh with the two racks 36 respectively, and both sides of the first teeth 37 and the racks 36 in the width direction are chamfered.

[0073] Reference Figure 12 and Figure 13 A driven wheel 22 is rotatably mounted inside the clamping block 95. A bevel gear set 23 is also installed inside the clamping block 95. One bevel gear of the bevel gear set 23 is coaxially and fixedly connected to the driving wheel 21, and the other bevel gear is coaxially and fixedly connected to the driven wheel 22. A connecting frame 24 is slidably mounted horizontally inside the clamping block 95. The connecting frame 24 is C-shaped, and rollers 25 are rotatably mounted at both ends of the connecting frame 24. Each roller 25 has an annular chamfer 27 formed on the circumference of its top wall.

[0074] A timing belt 26 is installed inside the clamping block 95, and the timing belt 26 is sleeved on the driven pulley 22 and two rollers 25. A tensioning block 40 is slidably installed inside the clamping block 95, and a tensioning wheel 45 is rotatably installed at the bottom of the tensioning block 40. A fourth elastic element 46 is installed inside the clamping block 95, and a second stop 53 is fixedly installed inside the clamping block 95. In this application, the fourth elastic element 46 can be a spring. One end of the fourth elastic element 46 abuts against the second stop 53, and the other end abuts against the tensioning block 40. The fourth elastic element 46 pushes the tensioning wheel 45 to move through the tensioning block 40, so that the tensioning wheel 45 can tension the timing belt 26.

[0075] Two third elastic elements 28 are installed inside the clamping block 95. In this application, the third elastic elements 28 can be selected as tension springs. Two first stops 52 are fixedly installed inside the clamping block 95. One end of each of the two third elastic elements 28 is fixedly connected to both ends of the connecting frame 24, and the other end is fixedly connected to the two first stops 52. The two third elastic elements 28 can pull the two rollers 25 to move into the receiving groove 19 of the clamping block 95 through the connecting frame 24, so that the rollers 25 can abut against the outer surface of the screw head of the screw 11.

[0076] Reference Figure 13 and, Figure 14 and Figure 15 Two push rods 29 are rotatably mounted on the connecting frame 24. The tops of the two push rods 29 are inclined towards the direction of the cutter head 30, and the tops of the push rods 29 extend out of the clamping block 95 and into the receiving groove 19. Multiple second teeth 38 are formed at equal intervals along their circumference on the outer wall of the roller 25, and multiple grooves 39 are formed at equal intervals along their circumference on the outer wall of the screw head 11. The second teeth 38 are movably engaged in the grooves 39.

[0077] The implementation principle of Embodiment 2 of this application is as follows: When the guide rod 5 drives the cutter head 30 to descend and abut against the screw 11, the internal hexagonal groove 34 of the cutter head 30 may not be fully engaged with the hexagonal block 35 of the screw 11. In this case, slippage is likely to occur during screwing, which affects the stability of the screwing operation.

[0078] The third elastic element 28 inside the clamping block 95 of this design can push the rollers 25 into the receiving groove 19 via the connecting frame 24. When the screw 11 falls into the clamping block 95, its head will rest on the annular chamfer 27 of the four rollers 25. The guide rod 5 then drives the cutting head 30 to move downward and contact the screw head, thereby pushing the screw 11 down. Under the guidance of the annular chamfer 27, the screw head will drive the four rollers 25 to expand outward, eventually allowing the rollers 25 to press tightly against the outer peripheral sidewall of the screw head.

[0079] If the internal hexagonal groove 34 of the cutter head 30 is not precisely aligned with the hexagonal block 35 of the screw 11, the cutter head 30 will not touch the push rod 29. As the guide rod 5 pushes the two clamping blocks 95 downward through the screw 11, the clamping blocks 95 will synchronously drive the drive wheel 21 to move downward. When the two drive wheels 21 roll on the rack 36 on the outer surface of the screw holder 91, they drive the two driven wheels 22 to rotate synchronously through the bevel gear set 23 (the two bevel gear sets 23 transmit power in opposite directions). The driven wheels 22 then transmit power through the synchronous belt 26, driving the four rollers 25 to rotate synchronously. The rollers 25, through the engagement of the second tooth 38 and the groove 39, drive the screw 11 to rotate and adjust its posture until the internal hexagonal groove 34 of the cutter head 30 and the hexagonal block 35 of the screw 11 are completely engaged.

[0080] Once the cutting head 30 and screw 11 are precisely aligned, the cutting head 30 will continue to move and touch the push rod 29. The push rod 29 will then drive the connecting frame 24 to move away from the screw 11. The connecting frame 24 will then pull the roller 25 back into the clamping block 95, completely separating the roller 25 from the screw 11, thus completing the entire alignment process.

[0081] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A reversible flow drill screw connection device, characterized in that: The assembly includes a frame (1), a top plate (2), a torque drive mechanism (3), a pressure drive mechanism (4), a guide rod (5), a pre-pressurization mechanism (6), a mounting base (7), a nail supply mechanism (8), and a floating clamping mechanism (9). The top plate (2) is fixedly mounted on the top of the frame (1). The torque drive mechanism (3) is mounted on the bottom of the top plate (2). The pressure drive mechanism (4) is mounted on the frame (1). The top plate (2) has a clearance area (10) to avoid the pressure drive mechanism (4). The guide rod (5) is mounted on the lifting end of the pressure drive mechanism (4) and interacts with the torque drive mechanism. The drive mechanism (3) is connected to the transmission. The pre-compression mechanism (6) is set inside the frame (1). The mounting base (7) is set at the lifting end of the pre-compression mechanism (6). The floating clamping mechanism (9) is set on the mounting base (7). The screw supply mechanism (8) is set on the force-bearing top plate (2) and the mounting base (7) and is used to supply the screw (11) into the floating clamping mechanism (9). The bottom end of the guide rod (5) extends into the floating clamping mechanism (9) and connects with the screw (11). After the floating clamping mechanism (9) releases the clamping restriction on the screw (11), the guide rod (5) drives the screw (11) to be automatically screwed in.

2. The reversible flow drill screw connection device according to claim 1, characterized in that: The pressure drive mechanism (4) includes a first drive member (41), a lifting frame (42), a lifting seat (43), and a rotating sleeve (44). The first drive member (41) is fixedly mounted on the side wall of the frame (1). The lifting frame (42) is slidably mounted on the side wall of the frame (1) and fixedly connected to the drive end of the first drive member (41). The lifting seat (43) is fixedly mounted on the lifting frame (42). The rotating sleeve (44) is rotatably mounted at the bottom of the lifting seat (43). The guide rod (5) is mounted at the bottom end of the rotating sleeve (44), and the drive end of the torque drive mechanism (3) is slidably mounted inside the rotating sleeve (44).

3. The reversible flow drill screw connection device according to claim 2, characterized in that: The torque drive mechanism (3) includes a second drive member (31), a gearbox (32), and a drive rod (33). The second drive member (31) is fixedly mounted on the bottom wall of the load-bearing top plate (2). The drive rod (33) is rotatably mounted on the bottom wall of the load-bearing top plate (2). The bottom end of the drive rod (33) passes through the lifting seat (43) and slides in the rotating sleeve (44). The gearbox (32) is mounted on the top wall of the load-bearing top plate (2). The input end of the gearbox (32) is connected to the second drive member (31), and the output end is connected to the drive rod (33).

4. The reversible flow drill screw connection device according to claim 2, characterized in that: Two first sinks (12) are provided on the side wall of the frame (1). The frame (1) is fixedly provided with a first guide rail (13) in both of the two first sinks (12). A first slider (14) is slidably provided on the first guide rail (13). The lifting frame (42) is fixedly connected to the first slider (14).

5. The reversible flow drill screw connection device according to claim 1, characterized in that: The pre-compression mechanism (6) includes a third driving component (61), a connecting block (62), and a lifting block (63). The third driving component (61) is fixedly installed inside the frame (1). The connecting block (62) is fixedly installed at the driving end of the third driving component (61). The lifting block (63) is fixedly installed on the connecting block (62). A second recess (15) is provided on the side wall of the lifting block (63). A second guide rail (16) is fixedly installed in the second recess (15) of the lifting block (63). A second slider (17) is fixedly installed on the side wall of the frame (1). The second guide rail (16) is slidably installed in the second slider (17). The lifting block (63) is fixedly connected to the mounting base (7).

6. The reversible flow drill screw connection device according to claim 1, characterized in that: The nail feeding mechanism (8) includes a fixed block (81), an upper nail feeding tube (82), a nail feeding sleeve (83), and a lower nail feeding tube (84). The fixed block (81) is fixedly mounted on the top plate (2). The upper nail feeding tube (82) is fixedly connected to the fixed block (81). The nail feeding sleeve (83) is fixedly mounted in the mounting base (7). The bottom end of the upper nail feeding tube (82) is slidably inserted into the nail feeding sleeve (83). The lower nail feeding tube (84) is inclinedly mounted at the bottom of the mounting base (7). The top end of the lower nail feeding tube (84) is connected to the nail feeding sleeve (83), and the bottom end is connected to the floating clamping mechanism (9).

7. The reversible flow drill screw connection device according to claim 1, characterized in that: The floating clamping mechanism (9) includes a nail receiving seat (91), a movable frame (92), two clamping arms (93), a fourth driving member (94), a clamping block (95), a first elastic member (96), and a second elastic member (97). The nail receiving seat (91) is fixedly mounted on the mounting base (7). A screw connection channel (18) is provided inside the nail receiving seat (91). The bottom end of the guide rod (5) slides in the screw connection channel (18). The discharge end of the nail feeding mechanism (8) is connected to the screw connection channel (18) of the nail receiving seat (91). The movable frame (92) is slidably mounted on the nail receiving seat (91). The first elastic member (96) is mounted on the nail receiving seat (91) and is used to push the movable frame (92). The two clamping arms (93) are rotatably mounted on both sides of the moving frame (92). The two clamping blocks (95) are fixedly mounted on the bottom of the two clamping arms (93) and located at the bottom end of the screw channel (18). The two second elastic members (97) are mounted on both sides of the moving frame (92) and are used to drive the two clamping arms (93) to rotate and open. The fourth driving member (94) is mounted on the mounting base (7) and is used to drive the two clamping arms (93) to rotate and close. The clamping block (95) has a receiving groove (19) for accommodating the screw (11) head. The clamping block (95) has a receiving hole (20) for accommodating the screw (11) body at the bottom of the receiving groove (19).

8. The reversible flow drill screw connection device according to claim 7, characterized in that: A drive wheel (21) is rotatably mounted on the side wall of the clamping block (95), and the drive wheel (21) abuts against the outer wall of the connecting pin seat (91). A driven wheel (22) is rotatably mounted inside the clamping block (95). A bevel gear set (23) is provided inside the clamping block (95) to drive the drive wheel (21) and the driven wheel (22). A connecting frame (24) is slidably mounted inside the clamping block (95). Rollers (25) are rotatably mounted at both ends of the connecting frame (24). A synchronous belt (26) is rotatably mounted on the driven wheel (22) and the two rollers (25). An annular chamfer (27) is formed on the top of the outer wall of the roller (25). A third elastic element (28) is provided inside the clamping block (95). The third elastic element (28) pushes... The connecting frame (24) moves and the roller (25) moves to the receiving groove (19) to abut against the outer wall of the screw (11) head. A push rod (29) is rotatably provided on the connecting frame (24). The end of the push rod (29) away from the connecting frame (24) is inclined upward and extends into the receiving groove (19). A cutter head (30) is provided at the bottom of the guide rod (5). An internal hexagonal groove (34) is opened at the bottom of the cutter head (30). A hexagonal block (35) is formed in the head of the screw (11). When the hexagonal block (35) is inserted into the internal hexagonal groove (34), the cutter head (30) pushes the connecting frame (24) to move through the push rod (29). The connecting frame (24) drives the roller (25) to move and separates the roller (25) from the head of the screw (11).

9. A reversible flow drill screw connection device according to claim 8, characterized in that: Two racks (36) are fixedly provided on the outer wall of the pin holder (91). Multiple first teeth (37) are provided on the outer wall of the drive wheel (21). The first teeth (37) mesh with the racks (36). Multiple second teeth (38) are provided on the outer wall of the roller (25). Multiple grooves (39) are formed on the outer wall of the screw head (11). The second teeth (38) are moved and engaged in the grooves (39).

10. A reversible flow drill screw connection device according to claim 8, characterized in that: A tensioning block (40) is slidably disposed inside the clamping block (95), and a tensioning wheel (45) is rotatably disposed on the tensioning block (40). The tensioning wheel (45) abuts against the timing belt (26). A fourth elastic element (46) for pushing the tensioning block (40) to move is disposed inside the clamping block (95).

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