Flexible nut orienting and driving mechanism

Abstract

The present application relates to the technical field of nail machinery, and discloses a flexible nut directional upper-nailing mechanism, when a thin-walled magnesium alloy workpiece is connected by nut rivet connection, in order to solve the problem of positioning deviation caused by non-uniform upper-nailing posture during subsequent riveting, a vertical arrangement of a feeding assembly is arranged on the mounting and guide frame, and a corresponding upper-nailing box is arranged at the bottom end of the feeding assembly, and a positioning hole for limiting the rivet is arranged on the upper-nailing box, by using this unique feeding mode, it is ensured that the rivet can accurately fall into the positioning hole, and the posture of the rivet is adjusted to a vertical upward state. Subsequently, the limited rivet is sent to below the gun body mechanism, so that the threaded rivet rod on the gun body mechanism and the rivet are pre-connected, and finally, the threaded rivet rod after completing the rivet pre-connection connects the thin-walled magnesium alloy workpiece.

Description

Technical Field

[0001] This invention relates to the field of nail feeding machinery, and in particular to a flexible nut directional nail feeding mechanism. Background Technology

[0002] In the manufacturing of thin-walled magnesium alloy workpieces, especially for products with extremely high precision and quality requirements such as electronic device housings, riveting technology demonstrates significant advantages due to its cold working characteristics. Compared to welding, riveting is a cold working method that does not generate a large amount of heat during processing. During welding, the high temperature causes localized heating of the thin-walled magnesium alloy workpiece. Due to the high coefficient of thermal expansion of magnesium alloy, this can easily lead to thermal deformation of the workpiece, thus affecting the dimensional accuracy and appearance quality of the product. Riveting cleverly avoids this problem, ensuring that the workpiece retains its original shape and dimensional accuracy after processing.

[0003] However, in continuous production, especially in the riveting process, the rivet mounting step is mostly done by directly clamping the rivets. While this method is simple and direct, it has a significant drawback: after each mounting, the rivet's posture (e.g., tilt angle) and position (e.g., axial offset, lateral misalignment) are difficult to maintain consistently. Due to the randomness of the rivet's state, the riveting equipment cannot operate accurately according to the preset parameters during subsequent pre-connection riveting processes, directly affecting the stability and accuracy of the riveting work. Specifically, this manifests as potential positioning deviations between the threaded rivet and the nut joint, leading to a failure to properly connect and engage, thus preventing the riveting process from proceeding normally. Summary of the Invention

[0004] This invention proposes a flexible nut orientation mounting mechanism, which has the advantage of stable adjustment of the mounting posture, thereby solving the problem of inconsistent mounting posture leading to positioning deviations during subsequent riveting as mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flexible nut directional rivet mounting mechanism, comprising: a mounting and guide frame, a lifting assembly for driving the movement of a gun body mechanism mounted on the top, and a threaded rivet rod provided at the end of the gun body mechanism; a horizontal conveying seat driven by a rodless cylinder movably mounted on the surface of the mounting and guide frame, a vertical conveying seat movably mounted on the surface of the horizontal conveying seat, and a guide wheel fixedly mounted on the side of the vertical conveying seat inserted into a guide groove opened on the side of the mounting and guide frame; a rivet mounting box mounted on the surface of the vertical conveying seat, a positioning hole opened in the middle of the surface of the rivet mounting box, and a material conveying assembly located above the rivet mounting box fixedly mounted on the top of the mounting and guide frame; the material conveying assembly conveys the threaded rivet to the positioning hole, the positioning hole realizes its vertical limitation, the rodless cylinder drives the horizontal conveying seat to move, realizing the vertical conveying seat to move along the guide groove, and sending the limited threaded rivet below the threaded rivet rod.

[0006] Furthermore, a nail-dropping sensor is fixedly installed on the outside of the nail box.

[0007] Furthermore, a guide base plate is symmetrically and movably installed on the inner side of the upper nail box, and a connecting rod is movably installed on the bottom of the upper nail box, with both ends of the connecting rod being movably connected to the guide base plate by round rods respectively; a drive assembly for driving the guide base plate to move is fixedly installed at the end of the upper nail box, and a clamping block is installed on the surface of the guide base plate, which can clamp the threaded rivet when the guide base plate drives the clamping block to move in opposite directions.

[0008] Furthermore, an upper nail block is installed on the side of the clamping block, and the included angle between the upper nail block and the clamping block is 60°. The end of the upper nail block is generally provided with a bevel.

[0009] Furthermore, an anti-fall cylinder is movably installed at the bottom center of the upper nail box, and the middle of the connecting rod is fixed on the anti-fall cylinder. An anti-fall piston rod is movably installed inside the anti-fall cylinder in a sealed manner, and a standard rod is fixedly installed at the output end of the anti-fall piston rod. A spring is set between the anti-fall cylinder and the anti-fall piston rod. A permanent magnet is movably installed on the top of the standard rod, and an electromagnetic on / off valve is set on the anti-fall piston rod.

[0010] Furthermore, a spring is provided between the clamping block and the upper nail block, and a position adjustment component for adjusting the position of the upper nail block is installed on the surface of the clamping block.

[0011] Furthermore, the position adjustment assembly includes an adjustment cylinder for injecting liquid medium, and an adjustment piston is movably installed inside the adjustment cylinder in a sealed manner. The output end of the adjustment piston is fixedly connected to the upper nail block, and an electromagnetic on / off valve is fixedly installed on the surface of the adjustment piston.

[0012] Furthermore, the electromagnetic on / off valve consists of a plug, a spring, and an electromagnet.

[0013] Furthermore, a detection switch is fixedly installed at the top of the standard pole, and a positioning switch is fixedly installed at the end of the upper nail box.

[0014] Furthermore, the standard rod is a polygon with different spacing between opposite faces.

[0015] The present invention has the following beneficial effects:

[0016] This invention provides a flexible nut-oriented riveting mechanism. When thin-walled magnesium alloy workpieces are riveted together using nuts, to ensure precise engagement between the rivet and the threaded rivet, this mechanism incorporates a vertically arranged feeding assembly on the mounting and guide frame. A rivet-loading box is located at the bottom of the feeding assembly, and the box has positioning holes for limiting the rivet's position. This unique feeding method utilizes gravity and a guiding structure to ensure the rivet accurately falls into the positioning hole, and its orientation is mechanically adjusted to a vertically upward position.

[0017] After the limit and attitude adjustments are completed, the upper rivet box feeds the rivet to the bottom of the gun body mechanism via the transmission mechanism. At this time, the threaded rivet on the gun body mechanism is pre-connected to the rivet, and the threaded rivet, having completed the pre-connection, firmly connects the thin-walled magnesium alloy workpiece together to form a stable structure.

[0018] Furthermore, this application includes a pair of guide plates in the rivet box that can move synchronously in opposite directions or towards each other. Clamping blocks are correspondingly arranged on the guide plates. After the positioning holes complete the vertical positioning of the rivet, the drive assembly drives the guide plates to move, causing the clamping blocks to clamp and secure the rivet. This clamping and securing method not only ensures a more accurate and stable rivet posture during the connection process but also effectively prevents the rivet from shifting or loosening during the connection process, thereby improving the riveting quality and reliability. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention.

[0020] The invention will be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0021] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram showing the positions and three-dimensional structure of the various components inside the nail box of the present invention;

[0023] Figure 3 This is a schematic diagram showing the position and three-dimensional structure of each component at the bottom of the upper nail box of the present invention;

[0024] Figure 4 This is a top view of the structure of the nail box after the top has been removed.

[0025] Figure 5 For the present invention Figure 4Enlarged structural diagram of section E in the middle;

[0026] Figure 6 This is a schematic diagram of the installation position of the guide base plate and its driving structure according to the present invention;

[0027] Figure 7 This is a schematic diagram showing the location and three-dimensional structure of each component on the fall arrestor box of the present invention;

[0028] Figure 8 This is a schematic diagram showing the location of each component inside the fall arrestor and its partially enlarged structure.

[0029] Figure 9 This is an indication diagram of the width limitation on the standard rod of the present invention;

[0030] Figure 10 This is a schematic diagram of the clamping state of the nut component according to the present invention;

[0031] Figure 11 This is a schematic diagram of the movement state of the guide plate during opening and closing of the present invention;

[0032] Figure 12 This is a schematic diagram of the nut loading process of the present invention.

[0033] In the diagram: 1. Mounting and guide frame; 2. Conveying assembly; 3. Lifting assembly; 4. Gun body mechanism; 5. Rodless cylinder; 6. Horizontal conveyor seat; 7. Vertical conveyor seat; 8. Guide groove; 9. Top nail box; 901. Position switch; 10. Nail drop sensor; 11. Drive assembly; 12. Threaded rivet; 13. Guide base plate; 14. Clamping block; 15. Top nail block; 16. Start switch; 17. Receiving platform; 18. Position adjustment assembly; 180. Adjusting cylinder; 181. Adjusting piston; 19. Connecting rod; 20. Anti-fall cylinder; 21. Standard rod; 22. Permanent magnet; 23. Detection switch; 24. Anti-fall piston rod; 25. Electromagnetic on / off valve; 250. Plug; 251. Electromagnet. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1, please refer to Figure 1As can be seen, a lifting assembly 3 is fixedly installed on the top of the mounting and guide frame 1. The output end of the lifting assembly 3 is fixedly installed with a gun body mechanism 4 capable of vertically moving up and down along the mounting and guide frame 1. The lifting assembly 3 mentioned in this application can be a cylinder, hydraulic cylinder, or motor-driven lead screw, etc., without detailed limitations, as long as it can achieve the actions described in this application. The end of the gun body mechanism 4 is generally provided with a threaded rivet. When driven to rotate by a motor or other means, the threaded rivet inserted into the rivet is pulled, and the deformation generated by the threaded rivet 12 achieves the riveting work. Especially for the connection of thin-walled magnesium alloy electronic device housings, the cold working method of rivet connection can greatly reduce the thermal deformation generated during the connection of magnesium alloy electronic devices.

[0036] Moreover, combined Figure 1 , Figure 2 and Figure 6 It can be seen that a horizontal conveyor seat 6 is movably mounted on the surface of the mounting and guide frame 1. The horizontal conveyor seat 6 can only move horizontally left and right along the side of the mounting and guide frame 1. Power is provided by a rodless cylinder 5 fixedly mounted on the horizontal conveyor seat 6, ensuring that the horizontal conveyor seat 6 can reciprocate along the side of the mounting and guide frame 1. At the same time, a vertical conveyor seat 7 is movably mounted on the surface of the horizontal conveyor seat 6, which moves vertically up and down along its side. A guide wheel is fixedly mounted on the side of the vertical conveyor seat 7. Correspondingly, a guide groove 8 is opened on the side of the mounting and guide frame 1 to restrict the movement path of the guide wheel. The guide groove 8 is generally approximately "Z" shaped. In this way, when the horizontal conveyor 6 is driven by the rodless cylinder 5 and moves along the side of the mounting and guide frame 1 towards the gun body mechanism 4, the guide wheel on the vertical conveyor 7 moves along the guide groove 8, causing the vertical conveyor 7 to descend along the guide groove 8 and eventually move to the bottom of the gun body mechanism 4. When the upper rivet box 9 moves laterally, it ensures that subsequent threaded rivets are stably fed into the bottom of the gun body mechanism 4. Figure 12 The motion state is shown.

[0037] from Figure 1 It can be seen that the surface of the vertical conveyor seat 7 has an upper nail box 9 that is fastened by bolts, and the upper nail box 9 has a vertical positioning hole in the middle of its surface. Correspondingly, the top of the mounting and guide frame 1 is fixedly installed with a material conveying component 2 located above the upper nail box 9. The material conveying component 2 is a round tube that runs through the middle, and the round tube is vertically coaxially aligned with the positioning hole.

[0038] In the actual application of this embodiment, the rodless cylinder 5 drives the horizontal conveyor seat 6 to move away from the gun body mechanism 4. Then, the guide wheel on the vertical conveyor seat 7 moves upward along the guide groove 8 until it reaches the end of the guide groove 8. At this time, the horizontal conveyor seat 6 moves to the left limit, the upper nail box 9 moves upward and is located below the material conveying assembly 2, and the material conveying assembly 2 is arranged coaxially with the positioning hole.

[0039] The threaded rivet 12 is guided by the feeding assembly 2. Under the influence of gravity or airflow inside the feeding assembly 2, the threaded rivet 12 falls into the positioning hole on the surface of the upper rivet box 9, and the positioning hole is used to adjust the posture of the threaded rivet 12 to always be in a vertical state. During this process, in order to detect whether the threaded rivet 12 is properly placed, a rivet drop sensor 10 is fixedly installed on the outside of the upper rivet box 9. When the threaded rivet 12 is placed into the positioning hole, its side blocks the rivet drop sensor 10, and the rivet drop sensor 10 sends an electrical signal to the control system to confirm that the threaded rivet 12 is placed in place.

[0040] Then, the rodless cylinder 5 drives the horizontal conveyor seat 6 to move towards the gun body mechanism 4. The guide wheel on the vertical conveyor seat 7 moves along the guide groove 8 and descends until the horizontal conveyor seat 6 reaches its right limit. After that, the threaded rivet 12 on the upper rivet box 9 and the threaded rivet rod on the gun body mechanism 4 are vertically aligned. Using the lifting assembly 3, the rivet rod on the gun body mechanism 4 rotates and pre-connects the threaded rivet 12, but the threaded rivet 12 does not deform at this time. After the threaded rivet 12 is connected with the threaded rivet rod, the lifting assembly 3 pulls the gun body mechanism 4 upward and disengages the threaded rivet 12 from the positioning hole.

[0041] The rodless cylinder 5 drives the horizontal conveyor 6 to move away from the gun body mechanism 4 until the horizontal conveyor 6 reaches its left limit. The upper nail box 9 then moves upward again and is positioned below the material conveying assembly 2. The upward movement of the upper nail box 9 makes it relatively higher than the gun body mechanism 4, ensuring that the presence of the upper nail box 9 does not obstruct the movement path of the workpiece when it is subsequently fed into the area below the gun body mechanism 4. The magnesium alloy electronic device to be connected is conveyed to the area below the gun body mechanism 4. The lifting assembly 3 drives the gun body mechanism 4 downward, and the threaded rivets 12 on the gun body mechanism 4 are inserted into the part to be connected to achieve riveting and fixing.

[0042] Example 2 is a further improvement on Example 1. To further ensure the posture of the threaded rivet 12 after it is positioned, and to prevent relative rotation between the threaded rivet 12 and the threaded anchor rod during subsequent connection, please refer to [link to example]. Figures 2-4 It can be seen that a guide base plate 13, which is limited by a guide rail, is symmetrically and movably installed on the inner side of the upper nail box 9. A connecting rod 19 is movably installed on the bottom of the upper nail box 9, and both ends of the connecting rod 19 are movably connected to the guide base plate 13 by round rods. Figure 3As can be seen, the bottom of the guide plate 13 has a groove for limiting the guide rod. When one guide plate 13 moves, the other guide plate 13 moves synchronously by using the limiting function of the connecting rod 19. Specifically, in conjunction with... Figure 11 As shown, when the guide base plates 13 move towards each other, they can move closer together synchronously using the connecting rod 19; similarly, when the connecting rod 19 moves away from each other, the two guide base plates 13 will also move further apart synchronously. A drive assembly 11, fixedly connected to one of the guide base plates 13, is fixedly installed at the end of the upper nail box 9. The drive assembly 11 is preferably a transmission method combining a servo motor and a screw. Specifically, by having the servo motor drive the screw to rotate, the guide base plate 13 can move precisely along the interior of the upper nail box 9.

[0043] Moreover, from Figure 2 As can be seen, clamping blocks 14 are mounted on the surface of the guide base plate 13. When the guide base plate 13 drives the clamping blocks 14 to move towards each other, the threaded rivet 12 can be clamped. This clamping stabilizes the position of the threaded rivet 12. As described in Embodiment 1, after the threaded rivet 12 is inserted into the positioning hole, the guide base plates 13 move towards each other according to the control of the drive assembly 11. The two guide base plates 13 drive the clamping blocks 14 to move closer together, using the two clamping blocks 14 to clamp the side of the threaded rivet 12, thereby completing the clamping and fastening of the threaded rivet 12 and stabilizing its position after positioning. Because the clamping blocks 14 directly clamp and fasten the side of the threaded rivet 12, this positioning method is more suitable for cylindrical threaded rivets.

[0044] In the connection of magnesium alloy electronic devices, hexagonal nuts and rivets are generally used for limiting and fastening to provide a better connection effect. Therefore, when using hexagonal nuts and rivets for limiting and fixing, based on the above content, combined with... Figure 2 and Figure 4 It can be seen that an upper nail block 15 is installed on the side of the clamping block 14, and the included angle between the upper nail block 15 and the clamping block 14 is 60°, which is the included angle between adjacent sides of a standard hexagonal nut. The end of the upper nail block 15 is generally provided with a bevel.

[0045] When tightening the hexagonal nut screw, combine Figure 2 and Figure 10As can be seen, after the material feeding assembly 2 places the hexagonal nut rivet in the positioning hole, the drive assembly 11 pushes the guide base plate 13 closer together. The two clamping blocks 14 and the upper rivet block 15 move closer synchronously under the action of the connecting rod 19. During this process, the upper rivet block 15, in its relative movement, will first contact the hexagonal surface of the nut rivet, and as the upper rivet block 15 moves, it will roll the nut until it is parallel to the nut. Finally, the upper rivet block 15 continues to move closer together with the clamping block 14, using the clamping block 14 to clamp and secure the other pair of opposite surfaces of the nut. In this way, the limiting clamping and securing by the upper rivet block 15 and the clamping block 14 ensures the stability of the hexagonal nut rivet's posture. Subsequently, when the hexagonal nut rivet is fed into the gun body mechanism 4, the constraint between the clamping block 14 and the upper rivet block 15 ensures that when the gun body mechanism 4 drives the threaded rivet rod to screw into the hexagonal nut rivet, the hexagonal nut rivet will not rotate with it. Ultimately, this limiting method ensures that the hexagonal nut rivet is fixed in position, making it easier to insert it into the corresponding hexagonal slot of the electronic device.

[0046] Example 3 is a further improvement on Example 2. Please refer to Example 2. Figures 5-8 It can be seen that a fall arrestor 20, coaxially aligned with the positioning hole, is movably installed at the bottom center of the upper nail box 9. The fall arrestor 20 can only rotate at the bottom of the upper nail box 9. The middle part of the connecting rod 19 is fixed to the fall arrestor 20. In this way, when the connecting rod 19 rotates, it can use the fall arrestor 20 as the rotation point and drive the fall arrestor 20 to rotate synchronously. A fall arrestor piston rod 24 is movably installed inside the fall arrestor 20, and a standard rod 21 extending from the top of the fall arrestor 20 is fixedly installed at the output end of the fall arrestor piston rod 24. A spring is provided between the fall arrestor 20 and the fall arrestor piston rod 24. Under normal conditions, the fall arrestor piston rod 24 is pushed by the spring, causing it to tend to drive the standard rod 21 downward. A permanent magnet 22 is movably installed at the top of the standard rod 21. When the threaded rivet 12 is inserted into the positioning hole of the upper nail box 9, the magnetic attraction of the permanent magnet 22 on the threaded rivet 12 further enhances the vertical positioning strength of the threaded rivet 12. Furthermore, after the threaded rivet 12 is connected to the threaded rivet rod on the gun body mechanism 4, as the lifting assembly 3 drives the gun body mechanism 4 upward, the permanent magnet 22 magnetically attracts the threaded rivet 12, causing the permanent magnet 22 to drive the standard rod 21 to move upward with the threaded rivet 12. After the standard rod 21 drives the anti-fall piston rod 24 upward, the anti-fall piston rod 24 compresses the spring, thereby increasing the separation strength between the permanent magnet 22 and the threaded rivet 12. By continuously increasing this separation strength, on the one hand, the permanent magnet 22 and the threaded rivet 12 eventually separate; on the other hand, the permanent magnet 22 further enhances the downward traction strength of the threaded rivet 12, ensuring a firm connection between the threaded rivet 12 and the threaded rivet rod on the gun body mechanism 4.

[0047] Based on this, since hexagonal nut rivets come in different models, such as M4, M5, and M6, in order to ensure that the rivet mounting mechanism in this application can perform rivet mounting on different models of hexagonal nut rivets and stabilize their posture, an upper rivet block 15 is movably mounted on a clamping block 14, and the upper rivet block 15 can reciprocate unidirectionally along the clamping block 14. When the two upper rivet blocks 15 move closer or further apart, the distance between them can be changed, thus providing a basis for subsequent rivet mounting of different models of hexagonal nut rivets. Combined with... Figure 4 and Figure 5 It can be seen that a spring is provided between the clamping block 14 and the upper nail block 15, and the spring pushes the two upper nail blocks 15 to always tend to move closer to each other. A position adjustment component 18 for adjusting the position of the upper nail blocks 15 is mounted on the surface of the clamping block 14. Specifically, in conjunction with... Figure 4 and Figure 5 It can be seen that the position adjustment assembly 18 includes an adjustment cylinder 180 for filling with liquid medium, and an adjustment piston 181 is movably and sealed inside the adjustment cylinder 180. The output end of the adjustment piston 181 is fixedly connected to the upper nail block 15. Furthermore, an electromagnetic on / off valve 25 is fixedly installed on the surface of the adjustment piston 181. When the electromagnetic on / off valve 25 is open, the adjustment piston 181 can move axially along the adjustment cylinder 180, thereby controlling the pushing and pulling back of the upper nail block 15. When the electromagnetic on / off valve 25 is closed, since the adjustment cylinder 180 is filled with an incompressible medium, the adjustment piston 181 remains in the set position. Similarly, combined with… Figure 8 It can be seen that the fall arrestor 20 is also filled with a sufficient amount of liquid medium, and the fall arrestor piston rod 24 is also equipped with an electromagnetic on / off valve 25. The electromagnetic on / off valve 25 has the same structure as the electromagnetic on / off valve 25 on the adjusting piston 181. The electromagnetic on / off valve 25 is mainly composed of a plug 250, a spring and an electromagnet 251. Under normal conditions, the plug 250 is blocked by the spring, and the through hole on the surface of the fall arrestor piston rod 24 is blocked. When the electromagnet 251 is energized and attracts the plug 250, the plug 250 can compress the spring and realize the connection of the through hole on the fall arrestor piston rod 24.

[0048] For the energizing timing control of each electromagnetic on / off valve 25, combined with Figure 8 It can be seen that a detection switch 23 is fixedly installed at the top of the standard rod 21. When the permanent magnet 22 attracts the threaded rivet 12, the upward movement of the permanent magnet 22 will squeeze the detection switch 23, thereby causing the detection switch 23 to generate an electrical signal and output it to the control unit, such as a programmable controller. A positioning switch 901 is fixedly installed at the end of the upper nail box 9. When the two guide base plates 13 are far apart to their limits, the guide base plates 13 abut against the positioning switch 901, causing the positioning switch 901 to generate an electrical signal and transmit it to the control unit.

[0049] Furthermore, regarding the setting of par 21, from Figure 7 and Figure 9 It can be seen that standard rod 21 is polygonal, and the spacing between opposite faces is different, such as... Figure 9 As shown, due to the different spacing between adjacent sides, these correspond to the relative face distances of M4, M5, and M6. Figure 6 As shown, a receiving platform 17 for guiding the standard rod 21 is fixedly installed in the middle of the inner side of the upper nail box 9. By utilizing the opening on the side of the receiving platform 17, the detection area of ​​the nail sensor 10 can be limited to the inside of the receiving platform 17, thus avoiding the influence of the environment on the detection of the nail sensor 10.

[0050] In the actual application of this embodiment, the threaded rivet 12 is fed from the feeding assembly 2 into the positioning hole on the surface of the upper rivet box 9. Then, according to the adjustment of the guide base plate 13 by the drive assembly 11, the upper rivet block 15 is used to rub the threaded rivet 12 to adjust its posture. Finally, the threaded rivet 12 is clamped and fastened according to the clamping block 14.

[0051] The rodless cylinder 5 transports the upper nail box 9 to the bottom of the gun body mechanism 4. The specific operation process is the same as described in the above embodiment. The threaded rivet rod on the gun body mechanism 4 is screwed into the threaded rivet 12 and lifted upward. According to the control of the drive component 11, the guide base plate 13 is retracted. At the same time as the guide base plate 13 retracts, it will also drive the fall arrestor 20 to rotate synchronously. Utilizing the transmission of the elliptical rod at the output end of the fall arrestor piston rod 24, the standard rod 21 is rotated synchronously, and the nut to be adjusted is rotated until it is relatively parallel to the upper nail block 15. Afterward, the attraction between the permanent magnet 22 and the threaded rivet 12 causes the fall arrestor piston rod 24 to move upward synchronously. At this time, the permanent magnet 22 has already turned on the detection switch 23, and the electromagnet 251 in the inner cavity of the fall arrestor 20 is activated. The medium pushes the plug 250 to open and allows the medium to flow to the bottom of the fall arrestor piston rod 24, so that the upward movement of the fall arrestor piston rod 24 is not obstructed. Similarly.

[0052] As the gun body mechanism 4 pulls the standard rod 21 upward via the threaded rivet 12, the standard rod 21 drives the anti-fall piston rod 24 upward. When the anti-fall piston rod 24 contacts the start switch 16, the start switch 16 and the detection switch 23 simultaneously send signals to the control system. Then, the electromagnetic on / off valve 25 on the clamp block 14 is activated, and the upper nail block 15 is pushed out by the spring. As the permanent magnet 22 continues to follow the standard rod 21 upward, it uses the side of the standard rod 21 corresponding to the nut spacing to push the upper nail block 15 away from each other. Finally, the side of the standard rod 21 limits the spacing between the upper nail blocks 15. When the threaded rivet 12 is completely away from the permanent magnet 22, the permanent magnet 22 falls downward under gravity, and then contacts the detection switch 23. After the detection switch 23 is no longer under pressure, it sends a signal to the control system and blocks the electromagnetic on / off valve 25, keeping the adjusting piston 181 in the adjusted position. The anti-fall piston rod 24 cannot fall downward because the electromagnet 251 stops starting.

[0053] Finally, the drive assembly 11 moves the two guide plates 13 away from each other. After the guide plates 13 contact the positioning switch 901, the electromagnet 251 on the anti-fall piston rod 24 is activated, opening the plug 250. The spring pushes the anti-fall piston rod 24 downward, causing the standard rod 21 to descend to the bottom. The rodless cylinder 5 then moves the nail box 9 to below the material conveying assembly 2, awaiting the next nailing operation.

Claims

1. A flexible nut directional nailing mechanism, characterized in that, include: The mounting and guide frame (1) has a lifting assembly (3) installed on top to drive the gun body mechanism (4) to move, and a threaded rivet rod is provided at the end of the gun body mechanism (4); a horizontal conveyor seat (6) driven by a rodless cylinder (5) is movably mounted on the surface of the mounting and guide frame (1), and a vertical conveyor seat (7) is movably mounted on the surface of the horizontal conveyor seat (6), and a guide wheel fixedly mounted on the side of the vertical conveyor seat (7) is inserted into the guide groove (8) opened on the side of the mounting and guide frame (1); A nail box (9) is installed on the surface of the vertical conveyor seat (7). A positioning hole is opened in the middle of the surface of the nail box (9). A material conveying assembly (2) located above the nail box (9) is fixedly installed on the top of the mounting and guide frame (1). The material conveying assembly (2) conveys the threaded rivet (12) into the positioning hole, which realizes its vertical limit. The rodless cylinder (5) drives the horizontal conveying seat (6) to move, so that the vertical conveying seat (7) moves along the guide groove (8) and sends the threaded rivet (12) after the limit to the bottom of the threaded rivet rod. A guide base plate (13) is symmetrically and movably installed on the inner side of the upper nail box (9). A connecting rod (19) is movably installed on the bottom of the upper nail box (9), and the two ends of the connecting rod (19) are movably connected to the guide base plate (13) by round rods respectively. A drive assembly (11) for driving the guide base plate (13) to move is fixedly installed at the end of the upper nail box (9). A clamping block (14) is installed on the surface of the guide base plate (13). When the guide base plate (13) drives the clamping block (14) to move in opposite directions, it can clamp the threaded rivet (12). The clamping block (14) has an upper nail block (15) installed on its side; A fall arrestor (20) is movably installed in the middle of the bottom of the upper nail box (9). The middle of the connecting rod (19) is fixed on the fall arrestor (20). A fall arrestor piston rod (24) is movably installed inside the fall arrestor (20) and a standard rod (21) is fixedly installed at the output end of the fall arrestor piston rod (24). A spring is provided between the fall arrestor (20) and the fall arrestor piston rod (24). A permanent magnet (22) is movably installed on the top of the standard rod (21). An electromagnetic on / off valve (25) is provided on the fall arrestor piston rod (24). A spring is provided between the clamping block (14) and the upper nail block (15), and a position adjustment component (18) for adjusting the position of the upper nail block (15) is installed on the surface of the clamping block (14). The position adjustment assembly (18) includes an adjustment cylinder (180) for filling liquid medium, and an adjustment piston (181) is installed inside the adjustment cylinder (180) in a sealed manner. The output end of the adjustment piston (181) is fixedly connected to the upper nail block (15), and an electromagnetic on / off valve (25) is fixedly installed on the surface of the adjustment piston (181).

2. The flexible nut directional nailing mechanism according to claim 1, characterized in that, A nail sensor (10) is fixedly installed on the outside of the nail box (9).

3. The flexible nut directional nailing mechanism according to claim 1, characterized in that, The included angle between the upper nail block (15) and the clamping block (14) is 60°, and the end of the upper nail block (15) is provided with an oblique angle.

4. The flexible nut directional nailing mechanism according to claim 1, characterized in that, The electromagnetic on / off valve (25) consists of a plug (250), a spring, and an electromagnet (251).

5. The flexible nut directional nailing mechanism according to claim 4, characterized in that, A detection switch (23) is fixedly installed at the top of the standard rod (21), and a position switch (901) is fixedly installed at the end of the nail box (9).

6. The flexible nut directional nailing mechanism according to claim 4, characterized in that, The standard rod (21) is a polygon with different spacing between opposite faces.

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