Tapping screw tightening tool

Abstract

The utility model discloses a self-tapping screw tightening tool which comprises a tool support, an electric screwdriver and a screw feeder. The tool support comprises a support bottom plate and a support vertical plate. The electric screwdriver and the screw feeder are connected to one side of the support vertical plate, and the screw feeder is located below the electric screwdriver. The screw feeder comprises a feeder body with a screw feeding channel, a screw feeding nozzle connected to one side of the feeder body and a screw discharging nozzle connected to the bottom of the feeder body. And a screwdriver drill bit of the electric screwdriver can downwards extend into the screw feeding channel to screw and press the self-tapping screw. The support vertical plate can drive the electric screwdriver and the screw discharger to be adjusted in a translation mode relative to the support bottom plate, the electric screwdriver and the screw discharger can be adjusted up and down relative to the support vertical plate, stations can be conveniently adjusted so as to be aligned with devices below, self-tapping screws can be conveniently connected to the screw hitting positions of the devices to be locked, operation is convenient, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of self-tapping screw tightening, in particular to a self-tapping screw tightening tool. Background Art

[0002] On some automatic assembly lines, especially small electrical appliance assembly lines, small screws are needed to lock product covers, circuit boards, etc.

[0003] The Chinese invention patent with publication number CN104647014A discloses a screw delivery chuck that can automatically supply and tighten small screws to achieve the purpose of automatic assembly. The technical solution adopted by the screw delivery chuck is as follows: a swinging nail delivery tube that can swing around a fixed axis is provided inside the elastic chuck, and the position of the swinging nail delivery tube is pressed on the body of the elastic chuck by the nail delivery tube return spring. The upper part of the swinging nail delivery tube is connected to the screw delivery hose. The screws blown by the high-pressure airflow pass through the delivery hose and the swinging nail delivery tube located inside the elastic chuck, fall between the left and right clamps at the lower end of the elastic chuck that also swing around the fixed axis, and are clamped by the clamps. When it is necessary to tighten the screw, the cutter head of the electric screwdriver moves down along the hollow part of the elastic collet. During the downward movement, the cutter head first pushes the swinging nail delivery tube to swing around the fixed axis away from the center to make way for the cutter head of the electric screwdriver to move downward along the hollow part of the elastic collet. Then the cutter head continues to move downward until it contacts the screw head and drives the screw to rotate. As the electric screwdriver cutter head pushes the rotating screw to continue to move downward, the screw head pushes the left and right jaws of the lower end of the elastic collet, which also swing around the fixed axis, to open, and the screwdriver cutter head pushes the rotating screw to the position to be assembled, thereby completing the assembly of the workpiece.

[0004] The defect of the existing solution is that the screw delivery chuck does not have a position adjustment function. During processing, the position of the device to be screwed can only be aligned with the screw delivery chuck, which is inconvenient to operate and low in efficiency. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a self-tapping screw tightening tool which can be adjusted in position and has convenient operation and high efficiency.

[0006] The technical solution of the utility model provides a self-tapping screw tightening tool, including a tool bracket, an electric screwdriver and a screw feeder;

[0007] The tooling support comprises a support base plate and a support stand plate capable of adjusting the position of the support base plate;

[0008] The electric screwdriver and the screw feeder are respectively connected to one side of the bracket vertical plate in a manner that they can slide up and down, the screw feeder is located below the electric screwdriver, and the screw feeder is connected to the electric screwdriver through a connecting rod;

[0009] The screw feeder includes a feeder body having a nail feeding channel, a nail feeding nozzle connected to one side of the feeder body, and a nail ejecting nozzle connected to the bottom of the feeder body;

[0010] The screwdriver bit of the electric screwdriver can extend downward into the screw feeding channel to screw and press down the self-tapping screw.

[0011] In one of the optional technical solutions, the bracket bottom plate is provided with a transverse guide rail extending along the length direction and a longitudinal guide rail extending along the width direction;

[0012] The transverse guide rail is fixedly connected to the bracket bottom plate, the longitudinal guide rail is slidably connected to the transverse guide rail, and the bracket vertical plate is slidably connected to the longitudinal guide rail;

[0013] The bracket vertical plate is provided with a vertical guide rail, and the electric screwdriver and the screw feeder are respectively slidably connected to the vertical guide rail.

[0014] In one of the optional technical solutions, the electric screwdriver is connected to the vertical guide rail via a first slider, the feeder body is connected to the vertical guide rail via a second slider, and the connecting rod is connected between the first slider and the second slider.

[0015] In one of the optional technical solutions, two transverse guide rails and a plurality of longitudinal guide rails are provided at intervals on the bracket bottom plate, each of the longitudinal guide rails is slidably connected to the two transverse guide rails, and the bracket vertical plate is slidably connected to the plurality of longitudinal guide rails.

[0016] In one of the optional technical solutions, a reinforcing bracket is connected to the back side of the bracket upright plate, and the reinforcing bracket is slidably connected to the longitudinal guide rail.

[0017] In one of the optional technical solutions, a transverse driving mechanism for driving the longitudinal guide rail to slide along the transverse guide rail is installed between the bracket bottom plate and the longitudinal guide rail;

[0018] A longitudinal driving mechanism is installed between the bracket upright plate and the longitudinal guide rail for driving the bracket upright plate to slide along the longitudinal guide rail;

[0019] A vertical driving mechanism for driving the electric screwdriver and the screw feeder to slide along the vertical guide rail is installed between the bracket vertical plate and the electric screwdriver and / or the screw feeder.

[0020] In one of the optional technical solutions, the transverse drive mechanism, the longitudinal drive mechanism and the vertical drive mechanism are pneumatic cylinders or electric cylinders.

[0021] In one of the optional technical solutions, a plurality of the electric screwdrivers and a plurality of the screw cutters are installed at intervals on one side of the bracket vertical plate, and the plurality of the screw cutters are configured in a one-to-one correspondence with the plurality of the electric screwdrivers.

[0022] In one of the optional technical solutions, the nail feeding nozzle is arranged obliquely on one side of the feeder body, and extends obliquely downward along the direction from the nail inlet to the nail outlet of the nail feeding nozzle, and the nail outlet is connected to the nail feeding channel.

[0023] In one of the optional technical solutions, an elastic claw for limiting the automatic falling of the self-tapping screw is provided in the nail feeding channel, and the elastic claw is located below the nail feeding mouth.

[0024] The above technical solution has the following beneficial effects:

[0025] The utility model provides a self-tapping screw tightening tool. The bracket vertical plate can drive the electric screwdriver and the screw feeder to translate and adjust relative to the bracket bottom plate. The electric screwdriver and the screw feeder can be adjusted up and down relative to the bracket vertical plate, which is convenient for adjusting the work position to align with the device below so as to connect the self-tapping screw to the device and lock the screw driving position. The operation is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0027] Figure 1 A three-dimensional diagram of a self-tapping screw tightening tool provided in one embodiment of the utility model;

[0028] Figure 2 It is a cross-sectional view of the self-tapping screws being fed from the screw feeder;

[0029] Figure 3 It is a schematic diagram of the signal connection between the transverse drive mechanism, the longitudinal drive mechanism, the vertical drive mechanism and the control unit;

[0030] Figure 4 It is a schematic diagram of a nail feeding channel provided with an elastic claw;

[0031] Figure 5 It is a cross-sectional view of the connecting parts of the motor, the rotating shaft, the fixing sleeve, and the screwdriver bit in the electric screwdriver;

[0032] Figure 6 A schematic diagram of a spiral groove provided in a fixing sleeve;

[0033] Figure 7 The schematic diagram shows that a screwdriver bit and one end of a rotating shaft are provided with a plug-in groove and a spiral rib. DETAILED DESCRIPTION

[0034] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] like Figure 1-2 As shown, a self-tapping screw tightening tool provided by an embodiment of the utility model includes a tool bracket 1, an electric screwdriver 2 and a screw feeder 3.

[0036] The tooling support 1 comprises a support base plate 11 and a support stand plate 12 which can be adjusted in position on the support base plate 11 .

[0037] The electric screwdriver 2 and the screw feeder 3 are respectively connected to one side of the bracket vertical plate 12 so as to be slidable up and down. The screw feeder 3 is located below the electric screwdriver 2 . The screw feeder 3 is connected to the electric screwdriver 2 via a connecting rod 16 .

[0038] The screw feeder 3 comprises a feeder body 31 having a screw feeding channel 311 , a screw feeding nozzle 32 connected to one side of the feeder body 31 , and a screw ejecting nozzle 33 connected to the bottom of the feeder body 31 .

[0039] The screwdriver bit 22 of the electric screwdriver 2 can extend downward into the screw feeding channel 311 to screw and press down the self-tapping screw 8 .

[0040] The self-tapping screw tightening tool provided by the utility model is used for driving a self-tapping screw 8 into a position of a device where the screw is to be driven.

[0041] The self-tapping screw tightening tool provided by the utility model comprises a tool support 1, an electric screwdriver 2, a screw feeder 3 and the like.

[0042] The tooling support 1 comprises a support base plate 11 and a support vertical plate 12. The support vertical plate 12 is slidably connected to the support base plate 11, and can be translated on the support base plate 11 to adjust its position.

[0043] The electric screwdriver 2 is an electric screwdriver or an electric screwdriver, which includes a screwdriver body 21 and a screwdriver bit 22. The screwdriver body 21 has a drive transmission mechanism, and the screwdriver bit 22 is connected to the drive transmission mechanism so that the screwdriver bit 22 can rotate and move axially. The electric screwdriver 2 can be slidably installed on one side of the bracket upright plate 12 up and down. Specifically, the screwdriver body 21 is slidably connected to the bracket upright plate 12 and can slide up and down relative to the bracket upright plate 12. The screwdriver bit 22 extends downward, and the lower end of the screwdriver bit 22 has a cross-shaped or Pozi-shaped cutter head 221, which is used to cooperate with the cross-shaped or Pozi-shaped groove on the top of the self-tapping screw 8 to screw the self-tapping screw 8. When rotating, the screwdriver bit 22 can also extend downward or retract upward to press down the self-tapping screw 8 or withdraw the cutter.

[0044] The screw feeder 3 is used to feed the self-tapping screws 8. The screw feeder 3 and the electric screwdriver 2 are on the same side of the bracket vertical plate 12, and the screw feeder 3 is below the electric screwdriver 2. The screw feeder 3 is slidably connected to the bracket vertical plate 12 and can slide up and down along the bracket vertical plate 12. The screw feeder 3 is connected to the electric screwdriver 2 through a connecting rod 16, and the screw feeder 3 and the electric screwdriver 2 slide up and down as a whole.

[0045] The screw feeder 3 includes a feeder body 31, a nail feeding nozzle 32 and a nail ejecting nozzle 33. The feeder body 31 is slidably connected to the bracket vertical plate 12, and the connecting rod 16 is connected between the feeder body 31 and the screwdriver body 21. The feeder body 31 has a vertically extending nail feeding channel 311, and the screwdriver drill bit 22 is coaxially arranged with the nail feeding channel 311. After the screwdriver drill bit 22 extends downward, it can extend into the nail feeding channel 311 from the top. The screwdriver drill bit 22 retracts upward and can be moved out of the nail feeding channel 311.

[0046] The nail feeding nozzle 32 is connected to one side of the feeder body 31, and is communicated with the nail feeding channel 311. The nail ejecting nozzle 33 is connected to the bottom of the feeder body 31, and is coaxially arranged with the nail feeding channel 311. In the initial state, the screwdriver bit 22 is located above the nail outlet 322 of the nail feeding nozzle 32. The nail feeding nozzle 32 is located directly above the position of the device where the screw is to be driven.

[0047] When in use, the self-tapping screw 8 can be fed into the nail feeding mouth 32 through the feeding mechanism, and the self-tapping screw 8 slides into the nail feeding channel 311 through the nail feeding mouth 32, and the screwdriver bit 22 rotates and extends downward, thereby screwing and pressing down the self-tapping screw 8, so that the self-tapping screw 8 falls through the nail feeding mouth 32 and is tightened at a designated position of the device. Then, the screwdriver bit 22 retracts upward and resets to the initial position to screw and press down the next self-tapping screw 8.

[0048] The radius of the nail feeding channel 311 is preferably slightly larger than the radius of the screw cap of the self-tapping screw 8 , so that the self-tapping screw 8 is arranged approximately vertically after falling into the nail feeding channel 311 .

[0049] The cutter head 221 may be optionally provided with a magnet so as to attract the self-tapping screw 8 and prevent the self-tapping screw 8 from automatically detaching from the cutter head 221 .

[0050] When screws need to be driven into different positions of the device, the support plate 12 can be translated on the support bottom plate 11 to adjust the horizontal position of the nail feeding nozzle 32. When screws need to be driven into positions of different thicknesses of the device, the position of the screw feeder 3 can be adjusted on the support plate 12 to adjust the height position of the nail feeding nozzle 32.

[0051] In summary, the self-tapping screw tightening tool provided by the utility model, the bracket vertical plate 12 can drive the electric screwdriver 2 and the screw feeder 3 to translate and adjust relative to the bracket bottom plate 11, the electric screwdriver 2 and the screw feeder 3 can be adjusted up and down relative to the bracket vertical plate 12, which is convenient for adjusting the work position to align with the device below, so as to connect the self-tapping screw 8 to the device and lock the screw driving position, which is easy to operate and efficient.

[0052] In one embodiment, if Figure 1 As shown, the support base plate 11 is provided with a transverse guide rail 13 extending along the length direction and a longitudinal guide rail 14 extending along the width direction.

[0053] The transverse guide rail 13 is fixedly connected to the bracket bottom plate 11 , the longitudinal guide rail 14 is slidably connected to the transverse guide rail 13 , and the bracket vertical plate 12 is slidably connected to the longitudinal guide rail 14 .

[0054] A vertical guide rail 15 is provided on the bracket upright plate 12 , and the electric screwdriver 2 and the screw feeder 3 are slidably connected to the vertical guide rail 15 , respectively.

[0055] In this embodiment, the length direction of the bracket bottom plate 11 is called the horizontal direction, the width direction of the bracket bottom plate 11 is called the longitudinal direction, and the height direction of the bracket bottom plate 11 is called the vertical direction.

[0056] A transverse guide rail 13 is fixedly installed on the top surface of the bracket bottom plate 11, and a longitudinal guide rail 14 is configured on the transverse guide rail 13. The two are slidably connected, and the longitudinal guide rail 14 can slide left and right along the transverse guide rail 13. The bracket vertical plate 12 is slidably connected to the longitudinal guide rail 14, and the bracket vertical plate 12 can slide forward and backward along the longitudinal guide rail 14. A vertical guide rail 15 is fixedly installed on the outer surface of the bracket vertical plate 12, and the electric screwdriver 2 and the screw feeder 3 are slidably connected to the vertical guide rail 15 respectively, and the electric screwdriver 2 and the screw feeder 3 can slide up and down along the vertical guide rail 15. Specifically, the screwdriver body 21 and the feeder body 31 are slidably connected to the vertical guide rail 15 respectively.

[0057] In this embodiment, the electric screwdriver 2 and the screw feeder 3 are adjusted in three directions to be suitable for different workstations.

[0058] In one embodiment, if Figure 1 As shown, the electric screwdriver 2 is connected to the vertical guide rail 15 through the first slider 17 , the feeder body 31 is connected to the vertical guide rail 15 through the second slider 18 , and the connecting rod 16 is connected between the first slider 17 and the second slider 18 .

[0059] In this embodiment, a first slider 17 is fixedly connected to the inner side of the screwdriver body 21, and the first slider 17 is slidably connected to the vertical guide rail 15. A second slider 18 is fixedly connected to the inner side of the feeder body 31, and the second slider 18 is slidably connected to the vertical guide rail 15. The upper end of the connecting rod 16 is fixedly connected to the first slider 17, and the lower end of the connecting rod 16 is fixedly connected to the second slider 18, which is convenient for assembly.

[0060] In one embodiment, if Figure 1 As shown, two transverse guide rails 13 and a plurality of longitudinal guide rails 14 are provided at intervals on the bracket base plate 11, each longitudinal guide rail 14 is slidably connected to the two transverse guide rails 13, and the bracket upright plate 12 is slidably connected to the plurality of longitudinal guide rails 14, which is beneficial to improving the stability of the translational bracket upright plate 12.

[0061] In one embodiment, if Figure 1 As shown, a reinforcing bracket 19 is connected to the back side of the bracket upright plate 12 , and the reinforcing bracket 19 is slidably connected to the longitudinal guide rail 14 , thereby improving the structural strength of the bracket upright plate 12 and the assembly stability of the longitudinal guide rail 14 .

[0062] In one embodiment, if Figure 1 and Figure 3 As shown, a transverse driving mechanism 5 for driving the longitudinal guide rail 14 to slide along the transverse guide rail 13 is installed between the bracket bottom plate 11 and the longitudinal guide rail 14 .

[0063] A longitudinal driving mechanism 6 for driving the support upright plate 12 to slide along the longitudinal guide rail 14 is installed between the support upright plate 12 and the longitudinal guide rail 14 .

[0064] A vertical driving mechanism 7 for driving the electric screwdriver 2 and the screw feeder 3 to slide along the vertical guide rail 15 is installed between the bracket vertical plate 12 and the electric screwdriver 2 and / or the screw feeder 3 .

[0065] In this embodiment, the self-tapping screw tightening tool is equipped with a transverse drive mechanism 5, a longitudinal drive mechanism 6 and a vertical drive mechanism 7 that can be automatically controlled to achieve automatic adjustment. The transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 can be linear drive mechanisms such as pistons and motor screws. The transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 can be separately configured with a control unit 4, and each control unit 4 controls a drive mechanism. The transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 can also be integrated and controlled, and the transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 are connected to a control unit 4 by signal, and the operation of the transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 is controlled by a control unit 4.

[0066] The transverse driving mechanism 5 is assembled between the bracket bottom plate 11 and the longitudinal guide rail 14 , and is used to drive the longitudinal guide rail 14 to slide left and right along the transverse guide rail 13 .

[0067] The longitudinal driving mechanism 6 is assembled between the support upright plate 12 and the longitudinal guide rail 14 , and is used to drive the support upright plate 12 to slide forward and backward along the longitudinal guide rail 14 .

[0068] The vertical driving mechanism 7 is assembled between the bracket upright plate 12 and the electric screwdriver 2 and / or the screw feeder 3 , and is used to drive the electric screwdriver 2 and the screw feeder 3 to slide up and down along the vertical guide rail 15 .

[0069] In one embodiment, the transverse drive mechanism 5, the longitudinal drive mechanism 6 and the vertical drive mechanism 7 are cylinders or electric cylinders. The cylinder drives the piston to move through compressed gas, thereby driving the piston rod to extend and retract, and the piston rod is connected to the component to be driven. By controlling the supply amount of compressed gas, the extension amount of the piston rod can be controlled.

[0070] The electric cylinder integrates the servo motor and the lead screw to convert the rotational motion of the servo motor into linear motion. The slider or nut on the lead screw is connected to the component to be driven. By controlling the speed of the servo motor, the movement of the slider or nut can be controlled.

[0071] In one embodiment, if Figure 1 As shown, a plurality of electric screwdrivers 2 and a plurality of screw cutters 3 are installed at intervals on one side of the bracket vertical plate 12. The plurality of screw cutters 3 are configured one-to-one with the plurality of electric screwdrivers 2, so that screw driving operations can be performed on a plurality of devices at one time, further improving work efficiency.

[0072] In one embodiment, if Figure 2 and Figure 4As shown, the nail feeding mouth 32 is arranged obliquely on one side of the feeder body 31, and extends obliquely downward along the direction from the nail entry port 321 to the nail exit port 322 of the nail feeding mouth 32, and the nail exit port 322 is connected to the nail feeding channel 311, which is conducive to delivering the self-tapping screws 8 into the nail feeding channel 311.

[0073] In one embodiment, if Figure 4 As shown, the nail feeding channel 311 is provided with an elastic claw 312 for limiting the automatic falling of the self-tapping screw 8, and the elastic claw 312 is located below the nail feeding mouth 32. After the self-tapping screw 8 falls into the nail feeding channel 311 from the nail outlet 322, it can be temporarily limited by the elastic claw 312 to prevent it from falling automatically. The screwdriver bit 22 extends downward, and its cutter head 221 cooperates with the screw cap of the self-tapping screw 8, which presses down the self-tapping screw 8, causing the elastic claw 312 to be deformed under pressure, and the self-tapping screw 8 slides to the bottom of the elastic claw 312, and then enters the nail ejection mouth 33.

[0074] The elastic claw 312 is an arc-shaped spring piece or a semicircular spring piece provided on the inner surface of the nail feeding channel 311 .

[0075] The distance between the elastic claw 312 and the nail outlet 322 is smaller than the height of the self-tapping screw 8. After the self-tapping screw 8 falls into the nail feeding channel 311, its screw cap blocks the nail outlet 322 to prevent the self-tapping screw 8 in the nail outlet 322 from sliding down. When the self-tapping screw 8 is pushed out of the nail outlet 33 and the screwdriver bit 22 is reset to above the nail outlet 322, the next self-tapping screw 8 will automatically fall into the nail feeding channel 311.

[0076] In one embodiment, if Figure 5-7 As shown, the driving transmission mechanism includes a motor 23 , a square rotating shaft 24 connected to the motor 23 , and a fixing sleeve 25 fixedly installed under the motor 23 .

[0077] The upper end of the square shaft 24 is connected to the motor shaft of the motor 23 through a coupling. The upper end of the screwdriver bit 22 has a square groove 221, and the square shaft 24 is inserted into the square groove 221. The square shaft 24 can drive the screwdriver bit 22 to rotate, and the screwdriver bit 22 can slide up and down relative to the square shaft 24.

[0078] The inner surface of the center hole of the fixing sleeve 25 is provided with a spiral groove 251, and the outer peripheral surface of the upper end of the screwdriver bit 22 is provided with one or two spiral ribs 222. The upper end of the screwdriver bit 22 passes through the center hole of the fixing sleeve 25, and the spiral ribs 222 are loosely fitted in the spiral groove 251. When the screwdriver bit 22 rotates, the screwdriver bit 22 can also be moved up and down for adjustment under the action of the spiral groove 251 and the spiral ribs 222. The fixing sleeve 25 can adopt a two-petal structure so as to be assembled with the upper end of the screwdriver bit 22.

[0079] Motor 23 can adopt servomotor or stepper motor, is convenient to control.When motor 23 rotates forward, screwdriver bit 22 moves downward, then when motor 23 rotates in the opposite direction, screwdriver bit 22 moves upward.

[0080] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0081] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A self-tapping screw tightening tool, characterized in that: Including tooling bracket, electric screwdriver and screw feeder; The tooling support comprises a support base plate and a support stand plate capable of adjusting the position of the support base plate; The electric screwdriver and the screw feeder are respectively connected to one side of the bracket vertical plate in a manner that they can slide up and down, the screw feeder is located below the electric screwdriver, and the screw feeder is connected to the electric screwdriver through a connecting rod; The screw feeder includes a feeder body having a nail feeding channel, a nail feeding nozzle connected to one side of the feeder body, and a nail ejecting nozzle connected to the bottom of the feeder body; The screwdriver bit of the electric screwdriver can extend downward into the screw feeding channel to screw and press down the self-tapping screw.

2. The self-tapping screw tightening tool according to claim 1, characterized in that: The bracket bottom plate is provided with a transverse guide rail extending along the length direction and a longitudinal guide rail extending along the width direction; The transverse guide rail is fixedly connected to the bracket bottom plate, the longitudinal guide rail is slidably connected to the transverse guide rail, and the bracket vertical plate is slidably connected to the longitudinal guide rail; The bracket vertical plate is provided with a vertical guide rail, and the electric screwdriver and the screw feeder are respectively slidably connected to the vertical guide rail.

3. The self-tapping screw tightening tool according to claim 2, characterized in that: The electric screwdriver is connected to the vertical guide rail via a first slider, the feeder body is connected to the vertical guide rail via a second slider, and the connecting rod is connected between the first slider and the second slider.

4. The self-tapping screw tightening tool according to claim 2, characterized in that: Two transverse guide rails and a plurality of longitudinal guide rails are arranged at intervals on the bracket bottom plate, each of the longitudinal guide rails is slidably connected to the two transverse guide rails, and the bracket vertical plate is slidably connected to the plurality of longitudinal guide rails.

5. The self-tapping screw tightening tool according to claim 2, characterized in that: A reinforcing bracket is connected to the back side of the bracket upright plate, and the reinforcing bracket is slidably connected to the longitudinal guide rail.

6. The self-tapping screw tightening tool according to claim 2, characterized in that: A transverse driving mechanism for driving the longitudinal guide rail to slide along the transverse guide rail is installed between the bracket bottom plate and the longitudinal guide rail; A longitudinal driving mechanism is installed between the bracket upright plate and the longitudinal guide rail for driving the bracket upright plate to slide along the longitudinal guide rail; A vertical driving mechanism for driving the electric screwdriver and the screw feeder to slide along the vertical guide rail is installed between the bracket vertical plate and the electric screwdriver and / or the screw feeder.

7. The self-tapping screw tightening tool according to claim 6, characterized in that: The transverse driving mechanism, the longitudinal driving mechanism and the vertical driving mechanism are pneumatic cylinders or electric cylinders.

8. The self-tapping screw tightening tool according to any one of claims 1 to 7, characterized in that: A plurality of the electric screwdrivers and a plurality of the screw cutters are installed at intervals on one side of the bracket vertical plate, and the plurality of the screw cutters are arranged in a one-to-one correspondence with the plurality of the electric screwdrivers.

9. The self-tapping screw tightening tool according to any one of claims 1 to 7, characterized in that: The nail feeding nozzle is arranged obliquely on one side of the feeder body, and extends obliquely downward along the direction from the nail inlet to the nail outlet of the nail feeding nozzle, and the nail outlet is communicated with the nail feeding channel.

10. The self-tapping screw tightening tool according to any one of claims 1 to 7, characterized in that: An elastic clamping claw for limiting the automatic falling of the self-tapping screw is arranged in the nail feeding channel, and the elastic clamping claw is located below the nail feeding mouth.

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