WO2016086844A1

WO2016086844A1 - Electric rivet nut gun

Info

Publication number: WO2016086844A1
Application number: PCT/CN2015/096136
Authority: WO
Inventors: 洪劲松
Original assignee: 洪劲松
Priority date: 2014-12-05
Filing date: 2015-12-01
Publication date: 2016-06-09
Also published as: EP3228421A1; CN105710814A; EP3228421A4; CN105710814B

Abstract

An electric rivet nut gun comprises a cover, a trigger, a circuit board, a power motor assembly, a rivet nut riveting system, a lead-screw system, a clutch control system and a planet gear deceleration system. The cover is disposed with the circuit board, the trigger and a stroke fixing plate and a stroke adjustment board. The circuit board is connected to a motor and a stroke control board by control wires; two ends of the stroke control board are provided with sensors, and the stroke fixing board and the stroke adjustment board are controlled by a stroke adjustment nut assembly; a magnet is disposed on a wheel positioning block; an inductor is located below the magnet; the central line of the power motor assembly, the planet gear deceleration system, the lead-screw system and the rivet nut riveting system is in the same axis with a riveting direction. With the largest tool application space, the electric gun is capable of riveting rivet nuts of various specifications, and has high adaptability.

Description

Rivet nut electric gun

Technical field

[0001] The invention belongs to the technical field of machinery, and in particular relates to a rivet nut electric gun.

Background technique

[0002] The rivet nut tool is a special installation tool for rivet nuts, including a pneumatic rivet nut gun and an electric rivet nut gun. The pneumatic rivet nut tool has the advantages of fast and tensile force, but its rotation is loaded and rotated. The rotating blades of the pneumatic motor with the rivet nut have a frequently used or slightly dusty working environment, and will suddenly become stuck and not work, there is a hidden danger of a large motor crash, and the air motor has a small torque due to the limitation of the volume. Although the riveting tension can be made larger, but the volume is also increased, and it can not be used in the case where there is no air source outdoors; currently, the electric rivet nut gun has two ways of riveting, and one is completely dependent on the rotary riveting. The riveting method is easy to damage the rivet nut. The other type is more commonly used to rotate the rivet nut into position and then pull the rivet vertically. The electric rivet nut is screwed in and the rivet nut mechanism does not crash, so the application is very extensive, but the electric rivet nut gun has the following limitations, giving the operator It is extremely inconvenient, and it uses a purely mechanical device to control the clutch in a limited manner, and it is necessary to adjust a plurality of threaded structural parts to ensure the riveting reliability, and there is no basis for measuring the adjustment.

[0003] With the increasing use of rivet nut tools, in order to improve the efficiency and quality of the rivet nut, a patent document filed in the United States has been retrieved, and its publication/publication number is US05605070A, although the rivet nut tool has been Improvements, but there are still some shortcomings, the main defects are as follows:

[0004] 1. Since the mechanical clutching stroke is not controllable, the clutching position can be reached at a fixed position, the empty traveling process is large, the daytime and power consumption are wasted, and the production efficiency is low.

[0005] 2, relying on the mechanical torsion spring to ensure the size of the rotating force, the rivet nut loading and loosening tightening force is small, encountering an abnormally rotating rivet nut, and the torsion spring is frequently used, due to other related components Frequent friction and impact, the torsion spring is very easy to burn, causing the torsion spring to become unstable with temperature changes, resulting in damage or loosening of the rivet nut during the loading process.

[0006] 3, the normal operation is extremely cumbersome, it is necessary to adjust a plurality of threaded structural members to ensure the screwing length and the riveting length. These threaded structural parts need to ensure the adjustment stroke and the need to meet the riveting strength. Due to the need for more reliable riveting, the thread needs to be tightened (the screw thread is not tight and it is easy to loosen the change to make the stroke change and pull the thread). The adjusted stroke is often changed after the screw is tightened. It is difficult for non-professionals and unskilled people. Smooth operation, the use of rivet nuts in small batches tends to be longer between turns.

[0007] 4, the structure is complex, many parts, many parts are vulnerable parts, and are not easy to replace, prone to failure, low life.

[0008] 5. Because the axis of the screw nut assembly and the screw nut are parallel, the gear axis and the motor center axis are parallel to each other, and each system cannot independently design all parameters according to requirements, which are embodied in:

[0009] (1) The motor meshing teeth that mesh with the motor teeth cannot be made large enough to exceed the axis of the screw nut assembly and the screw nut. Otherwise, interference occurs, so the gear number and modulus of the gear are greatly limited. Can only be limited to a very small range;

[0010] (2) The motor meshes with the motor meshing teeth without interference and without wasting space as much as possible, so the size of the motor is limited, and the rotational speed and power of the motor are greatly related to the magnitude thereof, and the motor is too small in torque and power. As the size becomes smaller, the motor becomes larger. As the power increases, the motor shaft will also become larger, and the motor teeth will also be larger. Otherwise, the motor cannot be engaged. The motor gear is enlarged and the reduction ratio is affected. Therefore, it is difficult to freely select a suitable matching motor in this design;

[0011] (3) The screw nut part is processed with gears outside the nut, the process is complicated and high, and the key defect is that if the gear design of the screw nut is too large, the space is bound to be wasted, and the gear design is too small to satisfy In terms of the above, the tool is designed, the speed of the motor, the reduction ratio of the reduction gear, the size of the screw can not be designed according to the needs of the most reasonable, often a large horse-drawn car and slow, or The small horse-drawn cart can't be pulled. At present, the electric rivet nut tool can't break the large-size rivet nut with strong riveting strength;

[0012] (4) The motor assembly, the gear, and the screw assembly have high coordination requirements, and it is necessary to ensure that the parallel axes of the three are ensured that the three axes are on the same plane, and the parallelism and the flatness are slightly deviated to affect the meshing. Requirements, resulting in a tool that is noisy.

[0013] 6, in the design, the arrangement of each component is limited to parallel arrangement, for example, the motor must be placed in the parallel direction of the screw rod direction, space use is greatly limited, resulting in a large space waste, tool shape Bloated, the center of gravity can not meet the needs of human mechanics, shaking hands and holding the tiger's mouth has no good focus, easy to use Fatigue, existing conditions are difficult to change this unhumanized institutional layout.

technical problem

[0014] In order to solve the above technical problem, an object of the present invention is to provide an excellent rivet nut electric gun, which is designed with a hollow through hole on a motor shaft, a sun gear of a planetary gear reduction system, and a power motor. The components, planetary gear reduction system, screw drive system, and riveting system are on the same axis. The tool is used in hand-held, the design is ergonomic, the connection of each part is simple and reliable, and various tools can be divided according to the different adjustment of the rivet nut, which can be changed in the design of the rivet nut with small pulling force. Speed adjustment is accelerated, and rivets with large breaking force can change the design to increase the pulling force and reduce the speed. These designs only need to simply replace the motor, planetary gear reduction system or ball screw (changing the pitch of the ball screw) It can change the speed). A structure can differentiate a variety of different parameters of the tool, users can use the tools that best meet their own needs according to their own needs.

Problem solution

Technical solution

[0015] A rivet nut electric gun includes an outer cover, a trigger, a circuit board, a power motor assembly, a riveting system, a screw drive system, a clutch control system, and a planetary gear reduction system;

[0016] The power motor assembly includes a motor and a motor shaft, the motor shaft is disposed in a hollow structure, and a motor tooth is disposed at a front end of the motor shaft;

[0017] The screw drive system comprises a roller positioning block, a ball screw, a screw nut, a front bearing seat, a rear bearing seat and a connecting shaft, wherein the ball screw is a hollow structure, and the front end is fixed by the roller positioning block, The end is connected with the lead screw nut, the lead screw nut is disposed in the front bearing seat; the rear bearing seat is connected with the front bearing seat, the connecting shaft is fixed through the rear bearing seat and the screw nut; the roller positioning block is disposed on the front bearing seat;

[0018] The planetary gear reduction system includes a rear planetary gear carrier, a front planetary gear carrier, a sun gear I, a sun gear II, a planetary gear and an internal gear, and the sun gear I and the sun gear II are arranged in a hollow structure, on the sun gear II There are three planetary gears II and one pinion gear. The three planetary gears II and the motor teeth mesh with the internal and external gears. The internal gears are constrained in the front planetary gear carrier. The sun gear I is provided with three planetary gears I. , the three planetary gears I and the pinion mesh are meshed; the rear planetary gear carrier and the front planetary gear carrier are coupled together;

[0019] The rivet system includes a pull rod, a gun head, an adjusting nut, an outer sleeve, a tie rod nut, and a screw lock nut

, a hexagonal connecting rod, a connecting rod fixing circlip and an outer sleeve nut, the outer sleeve is connected by an outer sleeve nut The lock is fastened to the front bearing seat, the pull rod nut is arranged inside the rear end of the outer sleeve, and the screw nut is arranged inside the pull rod nut; the pull rod and the gun head are arranged at the front end of the outer sleeve, and the rear end of the gun head is threaded. The adjusting nut is connected with the threaded portion of the rear end of the gun head, and the pull rod is connected with the hexagonal connecting rod; the connecting rod fixing circlip sleeve is sleeved on the hexagonal connecting rod, and is located between the front end of the ball screw and the screw lock nut;

[0020] The clutch control system includes an electromagnet, a thrust terminal, a return spring, and a clutch connecting shaft. The hexagonal hole at one end of the clutch connecting shaft is connected to a hexagonal connecting rod hexagon, and the middle portion has a hexagonal shape, and the hollow sun wheel II The hexagonal hole is engaged, the front end of the hexagonal connecting rod is always connected with the hexagonal connecting rod, the thrust terminal is disposed at the rear end of the clutch connecting shaft, one end of the return spring is disposed at the end of the motor, and the other end is disposed at the end surface of the thrust terminal, and the electromagnet is passed The circuit board program controls the front and rear movement of the clutch connecting shaft to separate and mesh with the sun gear II. The hexagonal inner hole of the sun gear II meshes with the hexagonal portion of the clutch connecting shaft, and can drive the hexagonal connecting rod and the rod to rotate, and the electromagnet can push the clutch connecting shaft Separating the hexagonal inner hole of the sun gear II from the hexagonal portion of the clutch connecting shaft, so that the pull rod stops rotating;

[0021] The outer cover is provided with a circuit board, a trigger and a stroke fixing plate and a stroke adjusting plate, wherein the circuit board is respectively connected with the motor and the stroke control board through the control line; the end of the stroke control board is provided with an inductor, a stroke fixing plate and a stroke The adjusting plate controls the adjustment of the riveting stroke by the stroke adjusting nut assembly; the roller positioning block is provided with a magnet; the inductor is located below the magnet;

[0022] The center line and the riveting direction of the power motor assembly, the planetary gear reduction system, the screw drive system, and the riveting system are on the same axis.

[0023] The outer cover is provided with a transparent window, and the transparent window is located outside the stroke adjusting plate, and the transparent window is provided with a ruler for adjusting the stroke.

[0024] The front end of the screw nut is provided with a dustproof ring, and the dustproof ring is fixed in the front bearing seat.

Advantageous effects of the invention

Beneficial effect

[0025] The rivet nut power tool has the following advantages and benefits:

[0026] (1) Using a new technology of a motor with a hollow motor shaft, the motor is basically not limited in size and speed, the size of the motor can be changed and adjusted according to requirements, and the motor and the clutch connecting shaft cooperate better.

[0027] (2) Using a planetary gear reduction system, the planetary gear reduction system has small volume, light weight, high load carrying capacity, long service life, stable operation, low noise, large output torque, and high transmission efficiency (because of meshing) Large area, so the torque is large, the transmission efficiency is high, and the performance is safe. The most important thing is the cooperation of the hollow structure of the sun gear and the clutch connecting shaft to make full use of all the space. The design of the reduction ratio of the planetary gear reduction system has been completely liberated, and the reduction ratio can be designed according to the requirements.

[0028] (3) The structure of the screw nut becomes simple, the nut does not increase the binding of the gears together, the process becomes simple, and the design is based on the tensile force, and the diameter and length of the screw nut vary with the riveting strength. Change, large riveting strength with large diameter, relatively small pitch, long screw length screw nut, so that the electric gun is larger, the riveting speed is slower; the riveting strength is smaller, the diameter is smaller, the pitch is smaller Large, screw nut with short length, so that the size of the electric gun is smaller and the speed of the riveting speed is increased. In summary, the tool system has a reasonable division of labor, for example, a rivet nut with a small riveting force for aluminum. Select a fast motor with low power, a planetary gear reduction system with a small reduction ratio, a screw drive system with a small volume and a small pitch, and a fast rivet nut tool with small tension; vice versa. Nut electric gun. The structure is due to the power motor assembly, the planetary gear reduction system

The screw drive system and the riveting direction are in a straight line. The adjustment 吋 can be free from excessive restrictions. The three parts can be replaced to meet the demand, so that the motor, the planetary gear reduction system and the screw drive system can be balanced very reasonably. Match, make the small horse-drawn car with the pull-up express, the big horse-drawn cart, and riveted the large-size rivet nut.

[0029] (4) Another great advantage brought by the above structure is that the power motor assembly, the planetary gear reduction system, the screw drive system and the riveting direction are in a straight line, so that the tool is more compact, beautiful, and the space is fully utilized. The hand center of gravity can meet the ergonomic requirements; and the power motor assembly, the clutch connecting shaft, the planetary gear reduction system, and the screw drive system are simply matched, and even if the coaxiality is slightly deviated, the noise will not be too large. Moreover, the cooperation between the four is very simple, the clutch control is simple and reliable; and the noise of using the cymbal is much smaller than the meshing sound of the common tool gear.

[0030] (5) The mechanism can use the mature planetary gear reduction system that realizes two-speed speed regulation, and directly shifts to meet the demand according to the needs during use.

[0031] This is a portable, fast and powerful pneumatic tool, and can be easily carried out in the field. It can provide the required parameters according to the requirements. The parameter configuration of the electric rivet nut tool is the most reasonable and most Humanized, greatly liberating the labor force and improving work efficiency.

Brief description of the drawing DRAWINGS

1 is a schematic structural view of a rivet nut electric gun according to the present invention;

2 is a partial structural schematic view of a rivet nut electric gun according to the present invention;

3 is a schematic structural view of a power motor assembly of the present invention;

4 is an exploded view of a planetary gear reduction system of the present invention;

[0036] FIG. 5 is a schematic view showing the assembly of the planetary gear reduction system of the present invention;

6 is a partial exploded view of the planetary gear reduction system of the present invention;

7 is a schematic structural view of a clutch connection shaft of the present invention;

8 is a schematic diagram of an indication portion of a stroke control system of the present invention;

9 is a schematic view of a shifting shifting structure according to the present invention;

[0041] wherein: 1, the drawbar; 2, the gun head; 3, the adjustment nut; 4, the outer sleeve; 5, the tie rod nut; 6, the screw lock nut; 7, the connecting rod fixed circlip; 8, hexagonal connection 9, outer sleeve nut; 10, roller positioning block; 11, magnet; 12, ball screw; 13, front bearing; 14, screw nut; 15, fixed pin; 16, connecting shaft; 18, sun gear I; 19, front planetary gear carrier; 20, internal gear; 21, sun gear II; 22, planetary gear; 23, rear planetary gear carrier; 24, motor; 25, motor shaft; Clutch connecting shaft; 27, return spring; 28, thrust terminal; 29, electromagnet; 30, stroke fixing plate; 31, stroke adjustment plate; 32, stroke adjustment nut assembly; 33, ruler; 34, transparent window; 35, trigger 36, circuit board; 37, outer cover; 38, shift fork; 39, shift shift 幵 off; 40, motor teeth; 41, pinion; 42, dust ring; 43, travel control board; 44, induction 221, planetary gear I; 222 Planetary gear II.

Embodiments of the invention

[0042] The present invention will be further described below in conjunction with the accompanying drawings;

[0043] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7, and FIG. 8, a rivet nut electric gun includes an outer cover 37, a trigger 35, a circuit board 36, and a power Motor assembly, rivet system, screw drive system, clutch control system and planetary gear reduction system.

[0044] The power motor assembly includes a motor 24 and a motor shaft 25, the motor shaft 25 is disposed in a hollow structure, and a motor tooth 40 is disposed at a front end of the motor shaft 25; the power motor assembly can realize the reverse rotation and disassembly of the rivet nut and pull Rivet mother.

[0045] The screw drive system includes a roller positioning block 10, a ball screw 12, a screw nut 14, a front bearing housing 13, a rear bearing housing 17, and a connecting shaft 16, the ball screw 12 is a hollow structure, the front end It is fixed by the roller positioning block 10, the rear end is connected with the screw nut 14, and the screw nut 14 is a common screw nut. Compared with the screw nut which is combined with the added gear, the processing technology of the screw nut 14 of the present invention is changed. It is simple, and the diameter and length of the screw nut can be designed according to the magnitude of the pulling force. The screw nut 14 is disposed in the front bearing housing 13; the rear bearing housing 17 is connected with the front bearing housing 13, and the connecting shaft 16 passes through the rear bearing housing. 17 is fixed by a fixing pin 15 and a spindle nut 14; the roller positioning block 10 is disposed on the front bearing housing 13.

1, 2, 3, 4, 5, 6, 7, and 9, the planetary gear reduction system includes a rear planetary gear carrier 23, a front planetary gear carrier 19, and a sun. The wheel 118, the sun gear 1121, the planetary gear 22 and the internal gear 20, the sun gear 118 and the sun gear 1121 are arranged in a hollow structure, and the sun gear 1121 is provided with three planetary gears II222 and a pinion 41, three planetary gears II222 and a motor. The teeth 40 mesh with the inner and outer gears 20, the inner gear 20 is restrained in the front planetary gear carrier 19, and the sun gear 118 is provided with three planetary gears 1221. The three planetary gears 1221 and the pinion gear 41 mesh; The planetary gear carrier 23 and the front planetary gear carrier 19 are coupled together, and a shift fork 38 can be disposed on the outer cover 37. The shift fork 38 is connected to the internal gear 20 provided with the card slot, and is shifted by the shift shift 39. The shifting fork 38 is controlled to shift the internal gear, and the design is used according to the need, and the adaptability is better and the applicability is stronger; the hollow structure of the sun gear 1121 is a heterogeneous hexagonal hole structure, and is engaged with the clutch connecting shaft 26 The disassembly and assembly of the rivet nut is realized.

[0047] The drawing and riveting system comprises a pull rod 1, a gun head 2, an adjusting nut 3, an outer sleeve 4, a tie rod nut 5, a screw lock nut 6, a hexagonal connecting rod 8, a connecting rod fixing spring 7 and a jacket The outer sleeve 4 is connected to the front bearing housing 13 by an outer sleeve nut 9. The rear end of the outer sleeve 4 is provided with a tie rod nut 5, and the rod nut 5 is internally provided with a screw lock nut. 6; the front end of the outer sleeve 4 is provided with a pull rod 1 and a gun head 2, the rear end of the gun head 2 is threaded, the adjusting nut 3 is connected with the threaded portion of the rear end of the gun head 2, and the tie rod 1 is connected with the hexagonal connecting rod 8; The rod fixing circlip 7 is sleeved on the hex connecting rod 8 between the front end of the ball screw 12 and the screw lock nut 6, and the adjusting nut 3 is adjusted at the end of the nipple 2, and is screwed to the end surface of the outer sleeve 4. The upper part serves to fix the tip 2 and protect the thread, because in the case of no locking, the gap due to the screwing of the thread may cause the thread to be offset and strained.

[0048] The clutch control system includes an electromagnet 29, a thrust terminal 28, a return spring 27, and a clutch connection shaft 26, The hexagonal hole of the clutch connecting shaft 26 is connected to the hexagonal connecting rod 8 hexagonal shape, and the middle portion has a hexagonal shape, and meshes with the hexagonal hole of the hollow sun wheel 1121, and is pushed and pulled by the electromagnet 29 to be connected with the other end of the clutch connecting shaft 26. The thrust terminal 28 is separated and meshed with the hexagonal hole of the hollow sun gear 1121, and the front end of the hexagonal connecting rod 8 is always connected with the hexagonal connecting rod 8, and the thrust terminal 28 is disposed at the rear end of the clutch connecting shaft 26, and the return spring 27 is One end is disposed at the end of the motor 24, and the other end is disposed at the end surface of the thrust terminal 28. The electromagnet 29 controls the clutch connecting shaft 26 to move back and forth from the sun gear 1121 through the circuit board program. The hexagonal inner hole and the clutch connecting shaft of the sun gear 1121 The hexagonal portion of the 26 is engaged with the hex, and the hex connecting rod 8 and the rod 1 can be rotated. The electromagnet 29 can push the clutch connecting shaft 26 to separate the hexagonal inner hole of the sun gear 1121 from the hexagonal portion of the clutch connecting shaft 26, so that the rod 1 stops rotating. The clutch control system has fewer parts, avoids the instability of the separate mechanical clutch, and has better stability and reliability.

[0049] The outer cover 37 is provided with a circuit board 36, a trigger 35 and a stroke fixing plate 30 and a stroke adjusting plate 31. The circuit board 36 is respectively connected to the motor 24 and the stroke control board 43 through a control line; the circuit board 36 is provided with current overload protection. The device is provided with a sensor 44 at both ends of the stroke control plate 43. The stroke fixing plate 30 and the stroke adjusting plate 31 are controlled and adjusted by the stroke adjusting nut assembly 32. The roller positioning block 10 is provided with a magnet 11; the sensor 44 is located at the magnet 11 Below.

[0050] The center line and the riveting direction of the power motor assembly, the planetary gear reduction system, the screw drive system and the riveting system are on the same axis, and the overall design and the clutch connection shaft 26 make the operation of the electric gun easier.

The noise can be greatly reduced, and the space of the electric gun is effectively saved.

[0051] As shown in FIG. 8, the outer cover 37 is provided with a transparent window 34. The transparent window 34 is located outside the stroke adjusting plate 31, and the transparent window 34 is provided with a stroke adjusting scale 33, so that the stroke can be clearly seen. The nuances of the adjustment make the stroke control more precise.

[0052] As shown in FIG. 1 , a dust seal 42 is disposed at a front end of the screw nut 6 , and the dust seal 42 is fixed in the front bearing seat 13 , which can effectively prevent the clogging caused by waste debris and dust of the rivet nut. Enhance the life of electric guns

[0053] The above-mentioned overall structural design, the components are arranged reasonably, and the design on the same axis avoids the limitation and waste of space use, and the space of the electric gun is utilized to the maximum, and the setting of the adjusting nut causes the nut to be screwed into the stroke. The adjustment is intuitive and simple. The design of the clutch connecting shaft makes the clutch control of the power motor assembly and the planetary gear reduction system and the screw drive system simpler and more reliable. The tool shape is simple and can be made. The user is fully ergonomic in use, easy to use, labor-saving, easy to operate, simple and reliable in connection with each part, and the electric gun is powerful, can be used indoors and outdoors, and can be riveted to different specifications of rivets. The clutch control system is more reliable, the rivet system is more stable, and the applicability is strong. Although the detailed description and description of the specific embodiments of the present invention have been given above, it should be noted that the above embodiments may be implemented in accordance with the concept of the present invention. Equivalent changes and modifications, the functional effects of which are still beyond the spirit of the specification, are intended to be within the scope of the invention.

Claims

Claim

[Claim 1] A rivet nut electric gun including an outer cover, a trigger, a circuit board, a power motor assembly, a riveting system, a screw drive system, a clutch control system, and a planetary gear reduction system; the power motor assembly including a motor And a motor shaft, the motor shaft is disposed in a hollow structure, and a motor tooth is disposed at a front end of the motor shaft;

The screw drive system comprises a roller positioning block, a ball screw, a screw nut, a front bearing seat, a rear bearing seat and a connecting shaft, wherein the ball screw is a hollow structure, the front end is fixed by the roller positioning block, the rear end and the wire The rod nut is connected, the lead screw nut is disposed in the front bearing seat; the rear bearing seat is connected with the front bearing seat, the connecting shaft is fixed through the rear bearing seat and the screw nut; the roller positioning block is disposed on the front bearing seat;

The planetary gear reduction system includes a rear planetary gear carrier, a front planetary gear carrier, a sun gear I, a sun gear II, a planetary gear and an internal gear, the sun gear I and the sun gear II are arranged in a hollow structure, and the sun gear II is provided with three Planetary gear II and a pinion, the three planetary gears II and the motor teeth mesh with the internal and internal gears, and the internal gear is restrained in the front planetary gear carrier.

, the sun gear I is provided with three planetary gears I, the three planetary gears I and the pinion gear mesh; the rear planetary gear base and the front planetary gear carrier are connected together;

The utility model is characterized in that: the rivet system comprises a pull rod, a pipe head, an adjusting nut, an outer sleeve, a pull rod nut, a screw lock nut, a hexagonal connecting rod, a connecting rod fixing circlip and an outer sleeve nut.

The outer sleeve is locked to the front bearing seat by an outer sleeve nut connection, and a pull rod nut is disposed inside the rear end of the outer sleeve, and a screw lock nut is disposed inside the pull rod nut; a pull rod is disposed at the front end of the outer sleeve The tip of the pipe head is threaded, the adjusting nut is connected with the threaded portion of the rear end of the pipe head, and the tie rod is connected with the hexagonal connecting rod; the connecting rod fixing circlip is sleeved on the hexagonal connecting rod, located at the front end of the ball screw and the wire Between the lever lock nuts;

The clutch control system includes an electromagnet, a thrust terminal, a return spring and a clutch connecting shaft. The hexagonal hole at one end of the clutch connecting shaft is connected to the hexagonal connecting rod hexagon, the middle portion is a hexagonal shape, and the hexagonal hole of the hollow sun wheel 1121 Engagement, the front end of the hexagonal connecting rod is always connected with the hexagonal connecting rod, the thrust terminal is arranged at the rear end of the clutch connecting shaft, one end of the return spring is arranged at the end of the motor, and the other end is arranged at the end surface of the thrust terminal, the electromagnet is connected The circuit board program controls the clutch connecting shaft to move forward and backward to separate and mesh with the sun gear II. The hexagonal inner hole of the sun gear II meshes with the middle hexagonal portion of the clutch connecting shaft, which can drive the hexagonal connecting rod and the rod to rotate, and the electromagnet can push the clutch The connecting shaft separates the hexagonal inner hole of the sun gear II from the hexagonal portion of the clutch connecting shaft, so that the pull rod stops rotating; the outer cover is provided with a circuit board, a trigger and a stroke fixing plate and a stroke adjusting plate, and the circuit board passes through the control line and the motor respectively. Connected to the stroke control board; sensors are provided at both ends of the stroke control board

The stroke fixing plate and the stroke adjusting plate control the adjustment of the riveting stroke by the stroke adjusting nut assembly; the roller positioning block is provided with a magnet; the inductor is located under the magnet; the power motor assembly, the planetary gear reduction system, the screw drive The centerline and riveting direction of the system and the riveting system are on the same axis.

[Claim 2] A rivet nut electric gun according to claim 1, wherein: the outer cover is provided with a transparent window, the transparent window is located outside the stroke adjusting plate, and the transparent window is provided with a stroke adjustment Ruler.

[Claim 3] A rivet nut electric gun according to claim 1, wherein a tip end of the screw nut is provided with a dust seal, and the dust seal is fixed in the front bearing housing.