A FDS tightening gun

Abstract

The utility model discloses a kind of FDS tightening guns, including fixed assembly;Feed device, the feed device includes first cylinder, tool bar assembly and first sliding assembly, the tool bar assembly is slidably connected with the fixed assembly by the first sliding assembly, the first cylinder is configured as the tool bar assembly moves along the arrangement direction of the first sliding assembly;The compression device includes second cylinder, nail feeding assembly and fixed frame, the fixed frame is fixedly arranged in the fixed assembly, the second cylinder is arranged on the fixed frame, the nail feeding assembly includes holder and third connecting piece, the output end of the second cylinder is fixedly connected with the third connecting piece, the second cylinder is configured as the holder moves along the arrangement direction of the fixed frame. The FDS tightening gun provided by the utility model replaces part guiding mechanism by fixed frame, compact structure, overall volume reduces.

Description

Technical Field

[0001] This utility model relates to the field of FDS flow drill screw tightening, and in particular to an FDS tightening gun. Background Technology

[0002] With the increasing prominence of environmental pollution, the requirements for energy conservation and emission reduction in automobiles are becoming more stringent. Whether it's traditional gasoline-powered vehicles or new energy vehicles, lightweight body design has become a common improvement direction for all automakers. To reduce body weight, automobile body materials are also becoming more diversified, such as using carbon fiber and aluminum. As aluminum sheets are increasingly used in mid-to-high-end vehicles, the connection technology for steel-aluminum hybrid bodies is constantly being applied and improved for multi-material body applications. Among them, FDS (Flow Drill Screw, or hot-melt self-tapping screw riveting technology) connection technology is widely used in the manufacturing of steel-aluminum bodies for new energy vehicles. This technology is a cold forming technology that uses a tool holder assembly to transmit the high-speed rotation of a motor to the workpiece. The friction between the threaded screw and the workpiece causes plastic deformation, followed by self-tapping and screwing. Using industrial robots equipped with FDS tightening guns to achieve automated FDS riveting has become an essential connection solution for lightweight body and new energy vehicle body manufacturing.

[0003] A typical FDS tightening gun uses multiple sets of cylinders to drive different components to complete the stroke. To ensure smooth movement of these components, multiple sets of guide rods or rails are required. These guide rods or rails need to be fixed to both sides of the frame, resulting in a large and bulky FDS tightening gun that is not convenient for working in small spaces. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an FDS tightening gun with a compact structure and reduced overall size.

[0005] This utility model is achieved through the following technical solution:

[0006] An FDS tightening gun includes:

[0007] Fixed components;

[0008] A feeding device includes a first cylinder, a tool holder assembly, and a first sliding assembly. The tool holder assembly is slidably connected to the fixed assembly via the first sliding assembly. The first cylinder is configured to drive the tool holder assembly to move along the arrangement direction of the first sliding assembly.

[0009] The clamping device includes a second cylinder, a nail-feeding assembly, and a fixing frame. The fixing frame is fixedly disposed within the fixing assembly. The second cylinder is disposed on the fixing frame. The nail-feeding assembly includes a clamping member and a third connecting member. The output end of the second cylinder is fixedly connected to the third connecting member. The second cylinder is configured to drive the clamping member to move along the arrangement direction of the fixing frame.

[0010] Furthermore, the second cylinder is fixedly connected to the top of the fixed frame, and the output end of the second cylinder passes through the fixed frame. A sliding block is fixedly connected to the third connector, and the sliding block is disposed inside the fixed frame and fixedly connected to the output end of the second cylinder.

[0011] Furthermore, a pair of smooth guide rods are provided inside the fixing frame, the guide rods are arranged in a vertical direction, and the sliding block is slidably disposed on the guide rods.

[0012] Furthermore, the feeding device includes a tool holder support, which is fixedly connected to the tool holder assembly, and the tool holder support is slidably connected to the fixed assembly through the first sliding assembly.

[0013] Furthermore, the cutter bar assembly is located below the power unit, and the feed assembly is located below the cutter bar assembly.

[0014] Furthermore, the tightening gun also includes a power unit, which is fixedly connected to the fixing component and is also drively connected to the tool holder assembly.

[0015] Furthermore, the power unit includes a motor and a screw shaft. The motor is fixedly connected to the first fixing plate of the fixing assembly, and the motor passes through the first fixing plate at least partially. One end of the screw shaft is mated with the motor, and the other end is mated with the tool holder assembly.

[0016] Furthermore, the helical shaft is a splined shaft, a splined hole is formed on the tool holder assembly, and the other end of the helical shaft is at least partially disposed within the splined hole.

[0017] Furthermore, the clamping device also includes a stop bolt, which is fixedly connected to the sliding block. A fourth cylinder is fixed on the tool holder, and the fourth piston rod of the fourth cylinder is aligned vertically with the stop bolt.

[0018] Furthermore, the fixing frame has a clearance groove, and the stop bolt passes through the clearance groove and is exposed on the outside of the fixing frame.

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] 1. By replacing part of the original guiding mechanism with a fixed frame, the structure is more compact, greatly reducing the size of the gun body and making it easier to use in confined spaces.

[0021] 2. The cylinder is positioned at the rear of the overall tightening gun, the motor is directly connected to the riveting assembly, and the electrical components are installed on the side of the gun body, resulting in a compact structure, reduced overall volume, and more even force distribution on the workpiece.

[0022] 3. By setting multiple cylinders in the middle of the tightening gun and placing the center of mass of the entire gun close to the gun head, the workpiece is subjected to more uniform force.

[0023] 4. By combining torque and displacement sensors, torque and position are precisely controlled to ensure product quality, uniform force release, and to prevent product damage and thread damage. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of an embodiment of the FDS tightening gun of this utility model;

[0025] Figure 2 This is a partial three-dimensional structural view of the gun body according to an embodiment of the present utility model;

[0026] Figure 3 This is a partially exploded view of the gun body according to an embodiment of the present invention;

[0027] Figure 4 This is a three-dimensional structural view of the gun body from another perspective according to an embodiment of the present invention;

[0028] Figure 5 This is a perspective structural diagram of a pressing device according to an embodiment of the present invention;

[0029] Figure 6 This is a cross-sectional view of a pressing device according to an embodiment of the present invention;

[0030] Figure 7 This is an exploded view of a tool holder assembly according to an embodiment of the present invention;

[0031] Figure 8 This is a three-dimensional assembly drawing of the nail-feeding assembly according to an embodiment of the present utility model;

[0032] Figure 9 This is an exploded view of the nail-feeding assembly according to an embodiment of the present invention;

[0033] Figure 10 This is a cross-sectional view of the nail insertion assembly according to an embodiment of the present invention;

[0034] Figure 11This is a three-dimensional assembly drawing of a feeding device according to an embodiment of the present invention;

[0035] Figure 12 This is a circuit block diagram of an embodiment of the FDS tightening gun of this utility model.

[0036] Explanation of reference numerals in the attached drawings: 1. Power unit; 2. Feeding device; 3. Clamping device; 4. Feeding device; 5. Feeding assembly; 7. Valve island; 8. Fixing assembly; 9. Fourth sensor; 10. Motor; 11. Screw shaft; 20. First cylinder; 21. Tool holder; 22. Tool holder assembly; 23. Fourth cylinder; 24. First sliding assembly; 25. First connecting plate; 30. Second cylinder; 33. Stop bolt; 35. First connecting block; 36. Fourth connecting plate; 37. Fifth connecting plate; 38. Third connecting piece; 40. Feed pipe; 41. Connecting pipe; 42. ... 43. Three sensors; 44. Third cylinder; 55. Seventh connecting plate; 56. Threaded pin; 57. Pressure plate; 58. Gripper jaw block; 59. Tool bar guide groove; 50. Gripper arm; 51. Pneumatic gripper; 52. Guide tube; 63. Second sensor; 64. Telescopic tube; 55. Wiring plate; 66. Controller; 67. Switch; 68. Remote module; 69. Host computer; 80. First fixing plate; 81. Second fixing plate; 82. Third fixing plate; 83. Fourth fixing plate; 100. Servo controller; 200. First piston rod; 210. First support plate; 211. 2. Support plate; 220. Tool holder; 221. Quick-change bushing; 222. First sensor; 223. Tool head; 224. Guide sleeve; 225. Quick-change head; 226. Connector; 227. External thread; 228. Internal thread; 229. Internal texture; 230. Fourth piston rod; 240. Guide rail; 241. Slider; 342. Fixing bracket; 343. Guide rod; 350. Second boss; 351. Front surface; 354. Fifth through hole; 370. Third groove; 380. Sliding block; 410. Blind hole; 420. Eighth connecting plate; 430. Third piston rod; 50 0. Texture; 501. Tip; 520. Second groove; 530. Sixth connecting plate; 531. Third boss; 533. Sixth through hole; 550. Second connecting block; 581. Spring; 582. Support block; 583. Countersunk hole; 584. First end; 585. Second end; 621. First proximity switch; 622. Second proximity switch; 623. Third proximity switch; 624. Fourth proximity switch; 625. Fifth proximity switch; 626. First analog module; 627. Second analog module; 800. First through hole; 830. Motor fixing block. Detailed Implementation

[0037] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] like Figure 1 As shown, a tightening gun according to an embodiment of the present invention includes a fixing component 8 and a power device 1, a feeding device 2, a clamping device 3 and a feeding device 4 respectively fixedly connected to the fixing component 8.

[0039] like Figures 2 to 4 As shown, the power unit 1 includes a motor 10 and a screw shaft 11, and the fixing assembly 8 includes a first fixing plate 80; the bottom of the motor 10 is fixedly connected to the first fixing plate 80 by screws, and a first through hole 800 is provided on the first fixing plate 80. The motor 10 passes through the first through hole 800 and is fixedly connected to the screw shaft 11 by a coupling.

[0040] The feeding device 2 includes a first cylinder 20, a first support plate 210, and a first sliding assembly 24. The first support plate 210 is a component of the tool holder 21. The feeding device 2 also includes a first proximity switch 621 for detecting the stroke of the first cylinder 20. The first support plate 210 is connected to the first cylinder 20 and fixedly connected to the remaining components of the tool holder 21. A fourth cylinder 23 is also fixed to the tool holder 21, located on the side of the first cylinder 20. Specifically, the first cylinder 20 passes through the first fixing plate 80, and its bottom is fixedly connected to the motor fixing block 830 on the fourth fixing plate 83 of the fixing assembly 8 by screws. The first piston rod 200 of the first cylinder 20 passes through the motor fixing block 830 and is fixed to the first connecting plate 25 by screws. The tool holder 21 includes a pair of second support plates 211, with the two second support plates 211 respectively disposed on both sides of the first cylinder 20. The two ends of the first support plate 210 are fixedly connected to the second support plate 211 by screws. The upper surface of the first support plate 210 is fixedly connected to the first connecting plate 25 by screws. The fourth cylinder 23 is fixed to one of the second support plates 211 by screws, making the structure more compact.

[0041] The first sliding assembly 24 includes a pair of guide rails 240 and two pairs of sliders 241 slidably connected to the pair of guide rails 240 respectively. The fixing assembly 8 also includes a second fixing plate 81 and a third fixing plate 82 fixed to the fourth fixing plate 83. The pair of guide rails 240 are symmetrically arranged on both sides of the first cylinder 20 and fixed to the fourth fixing plate 83 with screws. The sliders 241 are fixed to the first support plate 210 and the second support plate 211 mentioned above. The two pairs of sliders 241 are arranged in the vertical direction, which makes the movement of the tool holder 21 more stable.

[0042] like Figure 5 As shown, the feed device 2 also includes a tool bar assembly 22 fixedly connected to the tool bar support 21. The tool bar assembly 22 is located below the power device 1 and includes a tool bar 220, a quick-change bushing 221, and a first sensor 222. Corresponding to a preferred embodiment of the present invention, the first sensor 222 is preferably a torque sensor. The tool bar 220 includes a tool head 223, a guide sleeve 224, and a quick-change head 225; the quick-change head 225 mates with the quick-change bushing 221; the bottom connector 226 of the first sensor 222 is provided with an external thread 227, which mates with the internal thread 228 of the quick-change bushing 222. The two sides of the first sensor 222 are fixedly connected to the second support plate 211 by screws. The quick-change head 225 is adapted to the quick-change bushing 221, and by simply replacing the tool bar 220 with different specifications having the same quick-change head 225, the processing of different types of threaded nails 50 can be achieved, which is convenient, quick, and highly adaptable.

[0043] like Figures 6 to 10As shown, the clamping device 3 includes a second cylinder 30, a nail-feeding assembly 5, and a fixing frame 342. The bottom of the fixing frame 342 is fixed to the fixing assembly 8 with screws, and the second cylinder 30 is fixed to the top of the fixing frame 342 with screws, with the output end of the second cylinder 30 passing through the fixing frame 342. A pair of smooth guide rods 343 are provided inside the fixing frame 342, and the guide rods 343 are arranged vertically. A portion of the nail-feeding assembly 5 is slidably mounted on the pair of guide rods 343 and fixedly connected to the output end of the second cylinder 30, thereby enabling the second cylinder 30 to drive the nail-feeding assembly 5 to move vertically, so that the nail-feeding assembly 5 can assist in clamping the plate.

[0044] In addition, the clamping device 3 also includes two stop bolts 33, which are respectively disposed on both sides of the clamping device 3. The feeding device 2 also includes a fourth sensor 9 and a fourth cylinder 23, which are respectively fixed to both sides of the tool holder 21 by screws. The fourth sensor 9 is disposed corresponding to one of the stop bolts 33. After the fourth sensor 9 detects whether the tool holder 21 has moved to the designated position, the second cylinder 30 starts to work to drive the screw feeding assembly 5 to move, so as to ensure that the main stroke of the tool holder 220 after engaging with the screw 50 and the feed of the tool holder 220 are synchronized. In this embodiment, the fourth sensor 9 is preferably a displacement sensor. The fourth cylinder 23 includes a fourth piston rod 230, which is located above the other stop bolt 33 and the fourth piston rod 230 is aligned with the stop bolt 33 in the vertical direction, thereby preventing the tool holder 21 from moving beyond its limit and ensuring that the tool holder assembly 22 and the screw feeding assembly 5 do not interfere with each other. Furthermore, two fourth proximity switches 624 are provided on the side of the fourth cylinder 23, one in the upper and one in the lower direction, corresponding to the two extreme positions of the fourth piston rod 230, to prevent equipment damage.

[0045] Furthermore, the fixing component 8 is also provided with two second proximity switches 622 for detecting the movement stroke. The second proximity switches 622 are located on the side of the fixing component 8 near one of the stop bolts 33, with one second proximity switch 622 in the vertical direction to correspond to the two extreme positions of the clamping device 3. Similarly, the fixing component 8 is also provided with two first proximity switches 621 for detecting the movement stroke, with one first proximity switch 621 in the vertical direction to correspond to the two extreme positions of the tool holder 21.

[0046] Furthermore, in this application, the first cylinder 20 and the second cylinder 30 are positioned close to the center of gravity M of the tightening gun, and since most of the components are symmetrically arranged, the center of gravity M of the tightening gun is close to the nail feeding assembly 5 of the gun head, thereby making the workpiece subjected to more uniform force during operation.

[0047] The nail-feeding assembly 5 includes a clamping component and a third connecting component 38. One end of the third connecting component 38 is slidably connected to the pair of guide rods 343. More specifically, one end of the third connecting component 38 is fixedly connected to a sliding block 380, which is disposed within the fixing frame 342 and slidably disposed on the guide rods 343. The sliding block 380 is fixed to the output end of the second cylinder 30 and can move along the arrangement direction of the guide rods 343. The other end is fixed to the clamping component by screws. When the second cylinder 30 drives the sliding block 380 to move vertically, it moves the nail-feeding assembly 5 vertically, thereby pre-pressing the plate. The aforementioned stop bolts 33 are fixed to both sides of the sliding block 380 and protrude from the fixing frame 342. The clamping component includes a first connecting block 35, a jaw block 52, a jaw arm 54, a pneumatic clamp 55, and a second sensor 57. The front surface 351 of the second boss 350 of the first connecting block 35 is fixedly connected to the pneumatic gripper 55 by screws, and the end opposite to the front surface 351 is fixed to the third connecting member 38 by screws. A fifth proximity switch 625 for detecting the movement stroke is installed on the pneumatic gripper 55. The pneumatic gripper 55 includes a second connecting block 550, gripper arms 54 are symmetrically arranged on both sides of the pneumatic gripper 55 and fixedly connected to the second connecting block 550 by screws, the surface of the pneumatic gripper 55 is fixedly connected to the fourth connecting plate 36 by screws, and second sensors 57 are symmetrically arranged on both sides of the pneumatic gripper 55 and fixedly connected to the fourth connecting plate 36 by screws. The second sensors 57 are located directly above the gripper arms 54. The gripper arm 54 is fixedly connected to the gripper jaw block 52 by screws. The gripper jaw block 52 has a second groove 520, which forms a conical hole for placing the threaded nail 50. The thread 500 of the threaded nail 50 is adapted to the inner thread 229 of the cutter head 223, and the cutter head 223 engages with the threaded nail 50.

[0048] Furthermore, the feed assembly 5 is located below the tool holder assembly 22 and also includes a pressure plate 51 and a tool holder guide groove 53. The gripper arms 54 are symmetrically arranged on both sides of the tool holder guide groove 53. The tool holder 220 is clearance-fitted with the tool holder guide groove 53 and slides within the tool holder guide groove 53. The tool holder guide groove 53 includes a sixth connecting plate 530, on which a third boss 531 is provided. The side of the second boss 350 is fixedly connected to the fifth connecting plate 37 by screws, and the fifth connecting plate 37 has a third groove 370. The third boss 531 abuts against the third groove 370, and the sixth connecting plate 530 is fixedly connected to the fifth connecting plate 37 by screws. The pressure plate 51 is fixedly connected to the bottom of the sixth connecting plate 530 by screws, and the pressure plate 51 is preferably a circular ring structure, providing a larger contact area with the surface to be processed and more uniform force distribution.

[0049] Furthermore, the nail insertion assembly 5 also includes a guide tube 56, a telescopic tube 58, a spring 581, and a support block 582. The guide tube 56 can abut against the telescopic tube 58, and the telescopic tube 58 can communicate with the blade guide groove 53. One end of the spring 581 is detachably housed in the telescopic tube 58, and the other end is detachably mounted on the support block 582. The blade 220 is movably housed in the blade guide groove 23. When the blade 220 moves downward, the telescopic tube 58 is under stress. After being subjected to the downward pressure of the blade 220, the telescopic tube 58 exits the blade guide groove 53 and compresses the spring 581. When the blade moves upward, the telescopic tube 58 is in an unstressed state. The restoring force of the spring 581 drives the telescopic tube 58 into the blade guide groove 53. In addition, the nail insertion assembly 5 also includes a wire fixing plate 59 fixedly connected to the fifth connecting plate 37 for fixing the wiring used for connecting ventilation.

[0050] Specifically, the first connecting block 35 has a fifth through hole 354, through which the conduit 56 passes and connects to the telescopic tube 581. The sixth connecting plate 530 has a sixth through hole 533, and one end of the telescopic tube 58 is movably accommodated in the sixth through hole. The telescopic tube 580 is fixedly connected to the fifth connecting plate 37 by a fixing pin 580. The telescopic tube 58 has a countersunk hole 583, and one end of the spring 581 is detachably accommodated in the countersunk hole 583, while the other end is detachably installed in the support block 582. The support block 582 is detachably fixedly connected to the fifth connecting plate 37 by screws. The structure is simple and easy to disassemble.

[0051] The telescopic tube 58 includes a first end 584 and a second end 585. In the unloaded state, the first end 584 is located within the tool holder guide groove 53, and the second end 585 abuts against the edge of the sixth through hole 533, thus the telescopic tube 58 is connected to the tool holder guide groove 53. The edge of the telescopic tube 58 abuts against the edge of the guide tube 56, thus the telescopic tube 58 is connected to the guide tube 56. The threaded pin 50 passes through the guide tube 56 and enters the bottom of the tool holder guide groove 53 from the telescopic tube 581, eventually reaching the second groove 520 of the jaw block 52. In the loaded state, the first end 584 abuts against the tool holder 220, and the second end 585 is offset from the edge of the sixth through hole 533. The edge of the telescopic tube 58 is offset from the edge of the guide tube 56.

[0052] like Figure 11As shown, the feeding device 4 includes a feeding pipe 40, a connecting pipe 41, a third sensor 42, and a third cylinder 43. The feeding pipe 40 is externally connected to a feeder (not shown in the figure), and a seventh connecting plate 44 is fitted onto the feeding pipe 40. The feeding pipe 40 passes through a first fixing plate 80 and is fixed to the first fixing plate 80 via the seventh connecting plate 44. The connecting pipe 41 is fitted onto the feeding pipe 40 and is fixedly connected to the third cylinder 43 by screws. A blind hole 410 is formed on the connecting pipe 41, which engages with the third piston rod of the third cylinder 43, and the third piston rod can slide within the blind hole 410. The third sensor 42 is fitted onto the feeding pipe 40 and is fixedly connected to an eighth connecting plate 420 by screws. The eighth connecting plate 420 is fixedly connected to the cylinder body of the third cylinder 43 by screws. The third sensor 42 can detect whether there is a threaded pin 50 inside the feeding pipe 40. Corresponding to a preferred embodiment of this utility model, the third sensor 42 is preferably an inductive sensor.

[0053] like Figure 12 As shown, a tightening gun head according to an embodiment of the present invention further includes a fourth sensor 9, a controller 60, a switch 61, and a valve island 7. Corresponding to a preferred embodiment of the present invention, the fourth sensor 9 is preferably a displacement sensor. The fourth sensor 9 is fixedly connected to the second support plate 211 by screws, and the valve island 7 is fixedly connected to the third fixing plate 82 by screws. The controller 60 and the switch 61 are housed in an electrical cabinet (not shown in the figure). The valve island 7 uses existing technology, so its specific structure will not be described in detail here. Corresponding to a preferred embodiment of the present invention, the solenoid valve in the valve island 7 is preferably a proportional valve, and the feed force generated by the first cylinder 20 can be adjusted by adjusting the proportional valve.

[0054] In addition, the electrical components are also connected to a host computer 63. The host computer 63 is electrically connected to a switch 61 and is used to display the tightening status and data. The controller 60 is electrically connected to the switch 61, the switch 61 is electrically connected to the servo controller 100, the servo controller 100 is electrically connected to the motor 10, and controls the motor 10 to rotate, thereby driving the tool holder assembly to rotate.

[0055] The switch 61 is electrically connected to the valve island, which is in turn electrically connected to the third cylinder 43. The valve island drives the third piston rod of the third cylinder 43 to extend into the feed pipe 40, stopping the threaded nail 50 from further entering the guide tube 56. The valve island is also electrically connected to the first cylinder 20, driving the tool holder 21 to slide the tool holder 220 within the tool holder guide groove. The valve island is also electrically connected to the second cylinder 30, driving the nail feed assembly 5 to perform a clamping action until the pressure plate 51 contacts the surface to be processed. Finally, the valve island is electrically connected to the fourth cylinder 23, controlling the movement of the fourth piston rod 230. When the fourth piston rod 230 contacts the stop bolt 33, it indicates that the main stroke of the tool holder 220 after engaging with the screw 50 and the feed of the tool holder 220 are synchronized. Valve island 7 is electrically connected to pneumatic gripper 55 and controls the opening and closing of pneumatic gripper 55. When pneumatic gripper 55 is closed, gripper jaw block 52 is closed. When gripper 55 is pneumatic, gripper arm 54 drives gripper jaw block 52 to open.

[0056] The tightening gun also includes a remote module 62. The switch 61 is also electrically connected to the remote module 62, which is electrically connected to a first proximity switch 621 for detecting the stroke of the first cylinder 20. The remote module 62 is electrically connected to a second proximity switch 622 for detecting the stroke of the second cylinder 30. The remote module 62 is electrically connected to a third proximity switch 623 for detecting the stroke of the third cylinder 43. The remote module 62 is electrically connected to a fourth proximity switch 624 for detecting the stroke of the fourth cylinder 23. The remote module 62 is electrically connected to a fifth proximity switch 625 for detecting the stroke of the pneumatic gripper 55.

[0057] The tightening gun also includes a first analog module 626 and a second analog module 627. A remote module 62 is electrically connected to the first analog module 626, which in turn is electrically connected to a first sensor 222, for detecting the torque generated by the motor 10 and transmitting it to the remote module 62. The remote module 62 is electrically connected to the second analog module 627, which in turn is electrically connected to a fourth sensor 9, for detecting the stroke of the tool holder 220. A third sensor 42 is electrically connected to the remote module 62, for detecting the threaded pin 50 entering the feed tube 40 and transmitting the signal to the remote module 62. A second sensor 57 is electrically connected to the remote module 62, for determining whether the gripper jaws 52 are open or closed by detecting different positions of the gripper arms 54.

[0058] During operation, the feeder (not shown in the figure) delivers the threaded nail 50 to the feed pipe 40. The third sensor 42 detects the signal of the threaded nail 50 and transmits the signal to the sensor 6. The valve island 7 controls the third cylinder 43 to open the feed pipe 40. After the threaded nail 50 passes through the guide tube 56 and reaches the second groove 520 of the jaw block 52, the valve island 7 controls the third cylinder 43 to stop the feed pipe 40 again. The first cylinder 20 drives the cutter bar 220 to move through the cutter bar support 21 until the cutter head 220 contacts the upper surface of the threaded nail 50. The motor 10 drives the cutter bar 220 to rotate through the synchronous belt 123 until the cutter head 223 engages with the threaded nail 50. At this time, the first cylinder 20 and the second cylinder 30 respectively drive the cutter bar support 21 and the threaded nail assembly 5 to move downwards simultaneously until the pressure plate 51 contacts the surface to be processed. When the tip 501 of the threaded pin 500 contacts the surface to be machined, the speed of the motor 10 increases, and the feed force of the first cylinder 20 increases. At the same time, the pneumatic gripper 57 opens, the gripper arm 54 drives the gripper jaw block 52 to open, and the tool holder 21 drives the tool holder 220 to continue to move downward, tightening the threaded pin 50 with a set torque. At this point, the tightening process ends, and all cylinders return to their original positions.

[0059] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An FDS tightening gun, characterized in that, include: Fixed component (8); The feeding device (2) includes a first cylinder (20), a tool holder assembly (22) and a first sliding assembly (24). The tool holder assembly (22) is slidably connected to the fixed assembly (8) through the first sliding assembly (24). The first cylinder (20) is configured to drive the tool holder assembly (22) to move along the arrangement direction of the first sliding assembly (24). The clamping device (3) includes a second cylinder (30), a nail feeding assembly (5), and a fixing frame (342). The fixing frame (342) is fixedly disposed in the fixing assembly (8). The second cylinder (30) is disposed on the fixing frame (342). The nail feeding assembly (5) includes a clamping member and a third connecting member (38). The output end of the second cylinder (30) is fixedly connected to the third connecting member (38). The second cylinder (30) is configured to drive the clamping member to move along the arrangement direction of the fixing frame (342).

2. The FDS tightening gun according to claim 1, characterized in that, The second cylinder (30) is fixedly connected to the top of the fixed frame (342), and the output end of the second cylinder (30) is set through the fixed frame (342). A sliding block (380) is fixedly connected to the third connector (38), and the sliding block (380) is set in the fixed frame (342) and fixedly connected to the output end of the second cylinder (30).

3. The FDS tightening gun according to claim 2, characterized in that, The fixing frame (342) is provided with a pair of smooth guide rods (343), which are arranged in a vertical direction, and the sliding block (380) is slidably disposed on the guide rods (343).

4. The FDS tightening gun according to claim 2, characterized in that, The feeding device (2) includes a tool holder (21), which is fixedly connected to the tool holder assembly (22), and the tool holder (21) is slidably connected to the fixed assembly (8) through the first sliding assembly (24).

5. The FDS tightening gun according to claim 4, characterized in that, The cutter bar assembly (22) is located below the power unit (1), and the nail feed assembly (5) is located below the cutter bar assembly (22).

6. The FDS tightening gun according to claim 1, characterized in that, The tightening gun also includes a power unit (1), which is fixedly connected to the fixing component (8) and is drivenly connected to the tool holder assembly (22).

7. The FDS tightening gun according to claim 5, characterized in that, The power unit (1) includes a motor (10) and a screw shaft (11). The motor (10) is fixedly connected to the first fixing plate (80) of the fixing assembly (8), and the motor (10) passes through the first fixing plate (80) at least partially. One end of the screw shaft (11) is connected to the motor (10), and the other end is connected to the tool holder assembly (22).

8. The FDS tightening gun according to claim 7, characterized in that, The helical shaft (11) is a spline shaft, and a spline hole (110) is formed on the tool holder assembly (22). At least part of the other end of the helical shaft (11) is disposed in the spline hole (110).

9. The FDS tightening gun according to claim 4, characterized in that, The clamping device (3) also includes a stop bolt (33), which is fixedly connected to the sliding block (380). A fourth cylinder (23) is fixed on the tool holder (21), and the fourth piston rod (230) of the fourth cylinder (23) is aligned with the stop bolt (33) in the vertical direction.

10. The FDS tightening gun according to claim 9, characterized in that, A clearance groove is formed on the fixing frame (342), and the stop bolt (33) passes through the clearance groove and is exposed on the outside of the fixing frame (342).

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