CN215392300U

CN215392300U - Automatic nail feeding mechanism and blind rivet gun with same

Info

Publication number: CN215392300U
Application number: CN202120486053.4U
Authority: CN
Inventors: 何廷忠
Original assignee: Dongguan Swift Automation Equipment Co ltd
Current assignee: Dongguan Swift Automation Equipment Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2022-01-04
Anticipated expiration: 2031-03-05

Abstract

The utility model relates to the technical field of a rivet gun, in particular to an automatic rivet feeding mechanism which comprises a fixed block, a moving block, a rivet clamping device and a moving driving mechanism, wherein the moving block is connected with the fixed block in a sliding manner; and a locking mechanism used for locking the upper chuck and/or the lower chuck is arranged on the movable block. This automatic nail feeding mechanism locks lower chuck through the retaining member, prevents that the chuck from appearing springing down or going up chuck and lower chuck and transferring the positional deviation that the blind rivet in-process appears rotating and lead to the blind rivet when the blind rivet gets into the nail clamping device to improve automatic nail feeding mechanism's job stabilization nature. The utility model also provides a blind rivet gun with the rivet feeding mechanism, which has strong rivet feeding stability and high rivet feeding precision.

Description

Automatic nail feeding mechanism and blind rivet gun with same

Technical Field

The utility model relates to the technical field of blind rivet guns, in particular to an automatic rivet feeding mechanism and a blind rivet gun with the same.

Background

The blind rivet gun is also called a blind rivet gun, is an assembling device for driving a blind rivet into a target workpiece so as to realize workpiece riveting, and is widely applied to various industries. With the wide application of the rivet gun, the nail feeding efficiency of the rivet gun becomes a pain point for users, and therefore, the automatic nail feeding mechanism is produced. The outside blind rivet can be automatically conveyed to the rivet clamping device of the automatic rivet feeding mechanism from the material tray through the rivet feeding mechanism, and then the rivet clamping device is driven by the outside to transfer the blind rivet to the gun nozzle of the blind rivet gun, so that the automatic rivet feeding is realized, the rivet feeding efficiency of the blind rivet gun is improved, and the problems of low efficiency, high labor intensity and the like of manual feeding are solved. The working principle of the automatic nailing mechanism is as follows: the nail clamping device comprises an upper chuck and a lower chuck, and the upper chuck and the lower chuck are connected through a spring to achieve a closed state; the upper chuck is communicated with an external nail feeding mechanism through the material receiving pipe, when the upper chuck and the lower chuck are in a closed state, the nail feeding mechanism can convey the blind rivet to a position between the upper chuck and the lower chuck through the material receiving pipe of the upper chuck at a high speed, and the lower chuck can support the blind rivet to clamp the blind rivet. However, in the existing automatic nail feeding mechanism, when a large-sized and heavy-weight blind rivet is fed, the impact force of the blind rivet on the lower chuck is greater than the tension of the spring due to the large inertia of the blind rivet entering the upper chuck, so that the lower chuck is pushed open at the moment of contact between the blind rivet and the lower chuck after the blind rivet enters the upper chuck, the lower chuck is bounced or shaken, the position of the blind rivet is deviated, and the blind rivet cannot be stably and accurately moved into a gun nozzle of the blind rivet gun. This drawback is likely to cause unstable operation of the blind rivet gun and affect the blind rivet accuracy of the blind rivet gun, and a solution is urgently needed.

Disclosure of Invention

The utility model aims to provide an automatic nail feeding mechanism which has high nail feeding stability and can improve the nail feeding accuracy aiming at the defects of the prior art, and a blind rivet gun with the nail feeding mechanism.

In order to achieve the purpose, the utility model adopts the technical scheme as follows:

the utility model provides an automatic nail feeding mechanism which comprises a fixed block, a moving block, a nail clamping device and a moving driving mechanism, wherein the moving block is connected with the fixed block in a sliding mode, the nail clamping device is arranged on the moving block, the moving driving mechanism is used for driving the moving block to move, and the nail clamping device comprises an upper chuck, a lower chuck and a chuck driving mechanism, the upper chuck is rotatably arranged on the moving block, the lower chuck is rotatably arranged on the moving block, and the chuck driving mechanism is used for driving the upper chuck and the lower chuck to be closed or opened; and a locking mechanism used for locking the upper chuck and/or the lower chuck is arranged on the moving block.

Furthermore, the locking mechanism comprises a locking member rotatably arranged on the moving block and a locking driving mechanism for driving the locking member to be close to or far away from the moving block to rotate, one end of the locking member far away from the nail clamping device is rotatably connected with the moving block, and a lower stop block for stopping the lower chuck from rotating far away from the upper chuck is arranged at one end of the locking member close to the nail clamping device; or one end of the locking piece close to the nail clamping device is provided with an upper stop block and a lower stop block which are used for stopping the upper chuck and the lower chuck from rotating away from each other.

Furthermore, a lower cantilever beam arm is convexly arranged on one side of the lower chuck close to the locking piece, and the lower stop block is positioned below the bottom surface of the lower cantilever beam arm; and/or an upper cantilever beam arm is convexly arranged on one side of the upper chuck close to the locking piece, and the upper stop block is positioned above the top surface of the upper cantilever beam arm.

Furthermore, a concave cavity for embedding the lower stop block is concavely arranged on one side surface of the lower chuck close to the locking piece; and/or an upper concave cavity for embedding the upper stop block is concavely arranged on one side surface of the upper clamping head close to the locking piece.

Further, the upper side face or the lower side face of the locking piece is provided with a pulling block.

Furthermore, the locking driving mechanism comprises a mandril positioned at one side of the moving block and a first elastic piece arranged between the locking piece and the moving block; a convex block is convexly arranged on one side surface of the locking piece, which is close to the ejector rod, and the convex block corresponds to the ejector rod.

Furthermore, the chuck driving mechanism comprises a top block arranged at one end, close to the nail clamping device, of the fixed block and a second elastic piece arranged on the upper chuck and the lower chuck, one end of the second elastic piece is connected with the upper chuck, and the other end of the second elastic piece is connected with the lower chuck.

Further, the ejector rod is arranged at one end, close to the nail clamping device, of the ejector block.

Furthermore, the retaining member is close to the protruding two blocks of curb plates that are equipped with of one side of movable block, two the curb plate is located the upper end and the lower extreme of retaining member respectively, two the curb plate rotates via the round pin axle and connects in the movable block.

The utility model also provides a rivet gun, which comprises a gun body and the automatic rivet feeding mechanism, wherein a gun nozzle is arranged at one end of the gun body, the fixed block is connected with one side of the gun body, and the moving driving mechanism drives the rivet clamping device to move towards or away from the gun nozzle.

The utility model has the beneficial effects that:

the utility model provides an automatic nail feeding mechanism which comprises a fixed block, a moving block, a nail clamping device and a moving driving mechanism, wherein the moving block is connected with the fixed block in a sliding mode, the nail clamping device is arranged on the moving block, the moving driving mechanism is used for driving the moving block to move, and the nail clamping device comprises an upper chuck, a lower chuck and a chuck driving mechanism, the upper chuck is rotatably arranged on the moving block, the lower chuck is rotatably arranged on the moving block, and the chuck driving mechanism is used for driving the upper chuck and the lower chuck to be closed or opened; and a locking mechanism used for locking the upper chuck and/or the lower chuck is arranged on the moving block. When the locking mechanism works, when the upper chuck and the lower chuck are in a closed state, the locking mechanism locks the upper chuck and the lower chuck, and certainly, only the lower chuck can be locked, so that the upper chuck and the lower chuck are prevented from rotating; under the condition that the lower chuck or the upper chuck and the lower chuck are locked, when an external nail feeding mechanism inputs a large-size or heavy-weight blind rivet between the upper chuck and the lower chuck at a high speed, the lower chuck cannot rotate or shake due to the inertia impact of the blind rivet at the moment, and further the position of the blind rivet entering the nail clamping device is prevented from deviating, so that the feeding stability of the blind rivet is ensured, and meanwhile, the upper chuck and the lower chuck cannot rotate relatively when the moving driving mechanism drives the nail clamping device to move, so that the blind rivet clamped by the nail clamping device and a gun nozzle of the blind rivet gun are kept in a coaxial state, and the nail clamping device can stably and accurately feed the blind rivet into the gun nozzle of the blind rivet gun. The design of locking mechanism can prevent that it from taking place to rotate or rocking to press from both sides the chuck under when the blind rivet gets into to press from both sides the material device or press from both sides the material device when removing to improve this automatic stability and the precision of going up nail mechanism. The utility model also provides a blind rivet gun with the automatic rivet feeding mechanism, and by adopting the automatic rivet feeding mechanism, the blind rivet gun can realize stable and accurate rivet feeding and prevent the occurrence of the situation of rivet feeding jamming or rivet feeding failure.

Drawings

FIG. 1 is a schematic perspective view of an automatic nailing mechanism of the present invention;

FIG. 2 is a front view of the automatic stapling mechanism of the present invention;

FIG. 3 is a top view of the automatic stapling mechanism of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 6 is a left side view of the automatic stapling mechanism of the present invention;

FIG. 7 is a perspective view of the retaining member of the present invention;

fig. 8 is a schematic perspective view of the blind rivet gun of the present invention.

Description of the reference numerals

1. A fixed block; 2. a moving block; 3. a movement drive mechanism; 4. a nail clamping device; 5. a locking mechanism; 11. a first elastic member; 12. a second elastic member; 21. a top rod; 22. a top block; 31. a slider; 32. a driving cylinder; 41. an upper chuck; 42. a lower chuck; 51. a locking member; 52. an upper stop block; 53. a lower stop block; 54. an upper cantilever arm; 55. a lower cantilever beam arm; 56. a side plate; 57. pulling the block; 58. a raised block; 61. a gun body; 62. a gun nozzle.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention is further described with reference to the embodiments and the drawings, and the description of the embodiments is not intended to limit the present invention. The present invention is described in detail above with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 8, the automatic nail feeding mechanism provided by the present invention includes a fixed block 1, a moving block 2 slidably connected to the fixed block 1, a nail clamping device 4 disposed on the moving block 2, and a moving driving mechanism 3 for driving the moving block 2 to move, where the nail clamping device 4 includes an upper chuck 41 rotatably disposed on the moving block 2, a lower chuck 42 rotatably disposed on the moving block 2, and a chuck driving mechanism for driving the upper chuck 41 and the lower chuck 42 to close or open; the moving block 2 is provided with a locking mechanism 5 for locking the upper cartridge 41 and/or the lower cartridge 42. Specifically, the movement driving mechanism 3 drives the moving block 2 to move to realize the movement of the staple clamping device 4. The utility model can be used for feeding the blind rivet gun and other screw feeding mechanisms. The present embodiment is specifically described by using a blind rivet gun.

In practical applications, when the upper chuck 41 and the lower chuck 42 are in the closed state, the locking mechanism 5 locks the upper chuck 41 and the lower chuck 42, or only the lower chuck 42 may be locked, so as to prevent the upper chuck 41 and the lower chuck 42 from rotating; under the condition that the lower chuck 42 or the upper chuck 41 and the lower chuck 42 are locked, when an external nail feeding mechanism inputs a large-volume or heavy-weight blind rivet between the upper chuck 41 and the lower chuck 42 at a high speed, the lower chuck 42 cannot rotate or shake due to the inertial collision of the blind rivet, and further the position of the blind rivet entering the nail clamping device 4 is prevented from shifting, so that the feeding stability of the blind rivet is ensured, and meanwhile, the upper chuck 41 and the lower chuck 42 cannot rotate relatively when the moving driving mechanism 3 drives the nail clamping device 4 to move, so that the blind rivet clamped by the nail clamping device 4 and the gun nozzle 62 of the blind rivet gun are kept in a coaxial state, and the nail clamping device 4 can stably and accurately feed the blind rivet into the gun nozzle 62 of the blind rivet gun. At the same time when the nail clamping device 4 feeds the blind rivet into the gun nozzle 62, the locking mechanism 5 releases the locking of the upper chuck 41 and the lower chuck 42, and the chuck driving mechanism drives the upper chuck 41 and the lower chuck 42 to open, so that the upper chuck 41 and the lower chuck 42 can avoid the blind rivet gun, the interference and collision between the nail clamping device 4 and the blind rivet gun can be prevented, and the blind rivet can be completely sucked into the blind rivet gun.

In the present embodiment, the movement driving mechanism 3 includes a sliding block 31 and a driving cylinder 32, one end of the sliding block 31 is connected with the fixed block 1 in a sliding manner, and the other end of the sliding block 31 is connected with the moving block 2; one end of the driving cylinder 32 is connected with the fixed block 1, and the other end of the driving cylinder 32 is connected with the moving block 2 or the sliding block 31. The structure has simple and compact design and stable and reliable operation, so that the nail clamping device 4 can move stably and reliably.

In this embodiment, the locking mechanism 5 includes a locking member 51 rotatably disposed on the moving block 2 and a locking driving mechanism for driving the locking member 51 to rotate close to or far from the moving block 2, one end of the locking member 51 far from the nail clamping device 4 is rotatably connected to the moving block 2, and one end of the locking member 51 near the nail clamping device 4 is provided with a lower stop block 53 for stopping the rotation of the lower chuck 42 far from the upper chuck 41; alternatively, an end of the locking member 51 near the nail clamping device 4 is provided with an upper stopper 52 and a lower stopper 53 for stopping the rotation of the upper jaw 41 and the lower jaw 42 away from each other.

In practical applications, when the upper chuck 41 and the lower chuck 42 are in the loading state (i.e. when the upper chuck 41 and the lower chuck 42 are closed), the locking driving mechanism drives the locking member 51 to rotate in a direction approaching the nail clamping device 4, so that the upper stop block 52 and the lower stop block 53 respectively abut against the upper chuck 41 and the lower chuck 42, and further lock the upper chuck 41 and the lower chuck 42, and further stop the upper chuck 41 and the lower chuck 42 from rotating. When the moving driving mechanism 3 drives the nail clamping device 4 to move close to the gun nozzle 62 of the blind rivet gun, the locking driving mechanism drives the locking member 51 to rotate in the direction away from the nail clamping device 4, so that the upper stop block 52 and the lower stop block 53 of the locking member 51 release the locking of the upper chuck 41 and the lower chuck 42 respectively, so that the chuck driving mechanism can drive the upper chuck 41 and the lower chuck 42 to open, and the blind rivet clamped by the nail clamping device 4 is transferred into the gun nozzle 62 of the blind rivet gun.

In this embodiment, a lower cantilever arm 55 is convexly provided at one side of the lower chuck 42 close to the locking member 51, and the lower stop block 53 is located below the bottom surface of the lower cantilever arm 55; and/or one side of the upper clamping head 41 close to the locking piece 51 is convexly provided with an upper cantilever arm 54, and the upper stop block 52 is positioned above the top surface of the upper cantilever arm 54.

In practical applications, when the upper chuck 41 and the lower chuck 42 are in a locked state, the upper stop block 52 of the locking member 51 abuts against the upper surface of the upper cantilever arm 54 to stop the upper chuck 41, so as to prevent the upper chuck 41 from rotating upwards, thereby achieving a locking effect; similarly, the lower stop block 53 of the locking member 51 abuts against the lower surface of the lower suspension arm 55 to stop the lower chuck 42, so as to prevent the lower chuck 42 from rotating downward, thereby achieving the locking effect. The structure has simple and compact design, low manufacturing cost and stable and reliable operation.

In this embodiment, the bottom surface of the lower stop 53 is lower than the bottom surface of the lower chuck 42, so that the user can manually pull the lower stop 53 to rotate it away from the lower chuck 42, thereby disengaging the upper stop 52 and the lower stop 53 of the locking member 51 from the upper cantilever arm 54 and the lower cantilever arm 55 to release the locking of the upper chuck 41 and the lower chuck 42. Of course, there is another embodiment that the upper side or the lower side of the locking member 51 is provided with a pulling block 57, and the user can pull the locking member 51 to rotate away from the nail clamping device 4 through the pulling block 57, so as to lock the nail clamping device 4 by the locking member 51. The two structures are designed, and the functions are as follows: when the nail clamping device 4 breaks down during feeding, the locking piece 51 can be unlocked by hands, so that the blind nails in the nail clamping device 4 can be taken out conveniently.

In this embodiment, the locking driving mechanism includes a ram 21 located at one side of the moving block 2 and a first elastic member 11 disposed between the locking member 51 and the moving block 2. Preferably, the first elastic member 11 is a spring, one end of the spring abuts against the locking member 51, and the other end of the spring abuts against the moving block 2. The ejector rod 21 may be provided on the fixed block 1 or on the gun body 61 of the blind rivet gun. The ram 21 is located adjacent the gun nozzle 62 of the blind rivet gun.

In practical application, the moving driving mechanism 3 drives the moving block 2 to drive the locking member 51 to move close to the ejector rod 21, when the nail clamping device 4 is to approach the gun mouth 62 of the nail pulling gun, at this time, the ejector rod 21 abuts against the side surface of the locking member 51 close to the nail clamping device 4, at this time, the ejector rod 21 pushes the locking member 51 open, so that the locking member 51 rotates in the direction away from the nail clamping device 4, and therefore the locking member 51 releases the locking of the upper chuck 41 and the lower chuck 42, and at this time, the first elastic member 11 between the locking member 51 and the moving block 2 is in a compressed state; when the moving driving mechanism 3 drives the clamping moving block 2 to reset, the locking member 51 moves away from the mandril 21, and after the locking member 51 leaves the mandril 21, the locking member 51 rotates close to the nail clamping device 4 under the resilience force of the first elastic member 11, so that the locking member 51 restores the locking of the upper chuck 41 and the lower chuck 42.

In this embodiment, a protruding block 58 is protruded from a side surface of the locking member 51 close to the top bar 21, the protruding block 58 is disposed corresponding to the position of the top bar 21, and the top bar 21 is used for abutting against the protruding block 58. In order to make the ejector rod 21 eject the locking member 51 more stably and rapidly, the protruding block 58 is abutted against the ejector rod 21 so that the ejector rod 21 ejects the locking member 51. The design of the structure can reduce the friction force between the mandril 21 and the locking piece 51, so that the mandril 21 can eject the locking piece 51 in a labor-saving and quick way. Specifically, the protruding block 58 is arranged between the upper stop block 52 and the lower stop block 53, and the protruding block 58, the upper stop block 52 and the lower stop block 53 are arranged on the locking member 51 in the same row; the design of this structure is simple compact, and the locking piece 51 of being convenient for is demolded when producing, reduces manufacturing cost. The upper cantilevered arm 54 of the upper clip 41 is positioned between the upper stop 52 and the raised block 58, and the lower cantilevered arm 55 of the lower clip 42 is positioned between the lower stop 53 and the raised block 58.

In this embodiment, the chuck driving mechanism includes a top block 22 disposed at one end of the fixed block 1 close to the nail clamping device 4 and a second elastic element 12 disposed on the upper chuck 41 and the lower chuck 42, wherein one end of the second elastic element 12 is connected to the upper chuck 41, and the other end of the second elastic element 12 is connected to the lower chuck 42. Preferably, the second elastic member 12 is a tension spring. One end of the tension spring is connected with the upper chuck 41, and the other end of the tension spring is connected with the lower chuck 42. Specifically, the top block 22 is located between the upper and

lower chucks

41 and 42.

In practical applications, when the moving driving mechanism 3 drives the nail clamping device 4 to move in a direction approaching the top block 22, at the moment the nail clamping device 4 approaches the gun nozzle 62 of the nail pulling gun, the top block 22 is inserted into the upper chuck 41 and the lower chuck 42, the inner sides of the upper chuck 41 and the lower chuck 42 respectively abut against the two sides of the top block 22, and the top block 22 opens the upper chuck 41 and the lower chuck 42 along with the movement of the nail clamping device 4, so that the upper chuck 41 and the lower chuck 42 rotate away from each other, and the upper chuck 41 and the lower chuck 42 are in an open state.

In this embodiment, the ejector rod 21 is disposed at one end of the ejector block 22 close to the nail clamping device 4, and the ejector rod 21 and the ejector block 22 are integrally formed. Preferably, the width of the top block 22 is larger than that of the top rod 21; the two side surfaces of one end of the top block 22 close to the top rod 21 are in a conical arc design. In practical application, when the moving driving mechanism 3 drives the moving block 2 to drive the locking member 51 and the nail clamping device 4 to move in the direction close to the gun nozzle 62 of the nail pulling gun, the mandril 21 firstly collides with the locking member 51 to jack the locking member 51 open, so that the locking member 51 releases the locking of the nail clamping device 4; then, as the moving block 2 moves, the upper chuck 41 and the lower chuck 42 are respectively abutted against the arc-shaped surfaces on the upper and lower sides of the top block 22 and slide along the arc-shaped surfaces, so that the upper chuck 41 and the lower chuck 42 are simultaneously spread apart to open the upper chuck 41 and the lower chuck 42. The structure has simple, compact and ingenious design, stable and reliable operation and low manufacturing cost.

In this embodiment, two side plates 56 are convexly disposed on one side surface of the locking member 51 close to the moving block 2, the two side plates 56 are respectively disposed at the upper end and the lower end of the locking member 51, and the two side plates 56 are rotatably connected to the moving block 2 via a pin. The structure is designed to enhance the rotational stability of the locking member 51.

Example two

The present embodiment is different from the first embodiment in that: as shown in fig. 7, a side surface of the lower chuck 42 close to the locking member 51 is concavely provided with a concave cavity (not labeled) for embedding the lower stop block 53; and/or an upper concave cavity (not shown) for inserting the upper stop block 52 is concavely arranged on one side surface of the upper clamping head 41 close to the locking piece 51. In practice, when the locking member 51 is rotated in a direction approaching the staple holder 4, the upper stop 52 and the lower stop 53 of the locking member 51 are engaged in the upper cavity of the upper cartridge 41 and in the lower cavity of the lower cartridge 42, respectively.

As shown in fig. 8, the present invention further provides a blind rivet gun, which comprises a gun body 61 and the automatic rivet installing mechanism according to any one of the previous embodiments, wherein a gun nozzle 62 is disposed at one end of the gun body 61, the fixed block 1 is connected to one side of the gun body 61, and the moving driving mechanism 3 drives the rivet clamping device 4 to move toward or away from the gun nozzle 62. The blind rivet gun has all the beneficial effects of the automatic rivet feeding mechanism, and the description is omitted.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides an automatic go up nail mechanism which characterized in that: the clamping device comprises a fixed block (1), a moving block (2) connected with the fixed block (1) in a sliding manner, a clamping device (4) arranged on the moving block (2) and a moving driving mechanism (3) used for driving the moving block (2) to move, wherein the clamping device (4) comprises an upper clamping head (41) rotationally arranged on the moving block (2), a lower clamping head (42) rotationally arranged on the moving block (2) and a clamping head driving mechanism used for driving the upper clamping head (41) and the lower clamping head (42) to be closed or opened; and a locking mechanism (5) used for locking the upper chuck (41) and/or the lower chuck (42) is arranged on the moving block (2).

2. An automatic stapling mechanism according to claim 1, characterized in that: the locking mechanism (5) comprises a locking part (51) rotatably arranged on the moving block (2) and a locking driving mechanism for driving the locking part (51) to be close to or far away from the moving block (2) to rotate, one end, far away from the nail clamping device (4), of the locking part (51) is rotatably connected with the moving block (2), and a lower stopping block (53) for stopping the lower chuck (42) from rotating far away from the upper chuck (41) is arranged at one end, close to the nail clamping device (4), of the locking part (51); or one end of the locking piece (51) close to the nail clamping device (4) is provided with an upper stop block (52) and a lower stop block (53) which are used for stopping the upper chuck (41) and the lower chuck (42) from rotating away from each other.

3. An automatic stapling mechanism according to claim 2, characterized in that: a lower cantilever beam arm (55) is convexly arranged on one side, close to the locking piece (51), of the lower chuck (42), and the lower stop block (53) is positioned below the bottom surface of the lower cantilever beam arm (55); and/or an upper cantilever arm (54) is convexly arranged on one side of the upper chuck (41) close to the locking piece (51), and the upper stop block (52) is positioned above the top surface of the upper cantilever arm (54).

4. An automatic stapling mechanism according to claim 2, characterized in that: one side surface of the lower chuck (42) close to the locking piece (51) is concavely provided with a lower concave cavity for the lower stop block (53) to be embedded; and/or an upper concave cavity for embedding the upper stop block (52) is concavely arranged on one side surface of the upper clamping head (41) close to the locking piece (51).

5. An automatic stapling mechanism according to claim 2, characterized in that: the upper side or the lower side of the locking piece (51) is provided with a pulling block (57).

6. An automatic stapling mechanism according to claim 2, characterized in that: the locking driving mechanism comprises a mandril (21) positioned on one side of the moving block (2) and a first elastic piece (11) arranged between the locking piece (51) and the moving block (2); a convex block (58) is convexly arranged on one side surface of the locking piece (51) close to the ejector rod (21), and the convex block (58) is correspondingly arranged with the ejector rod (21).

7. An automatic stapling mechanism according to claim 6, characterized in that: the chuck driving mechanism comprises an ejector block (22) arranged at one end, close to the nail clamping device (4), of the fixing block (1) and a second elastic piece (12) arranged on the upper chuck (41) and the lower chuck (42), one end of the second elastic piece (12) is connected with the upper chuck (41), and the other end of the second elastic piece (12) is connected with the lower chuck (42).

8. An automatic stapling mechanism according to claim 7, characterized in that: the ejector rod (21) is arranged at one end, close to the nail clamping device (4), of the ejector block (22).

9. An automatic stapling mechanism according to any one of claims 2 to 8, characterized in that: one side surface, close to the moving block (2), of the locking part (51) is convexly provided with two side plates (56), the two side plates (56) are respectively located at the upper end and the lower end of the locking part (51), and the two side plates (56) are rotatably connected to the moving block (2) through pin shafts.

10. A blind rivet gun, characterized by: the automatic nail feeding mechanism comprises a gun body (61) and the automatic nail feeding mechanism according to any one of claims 1 to 9, wherein a gun nozzle (62) is arranged at one end of the gun body (61), the fixed block (1) is connected with one side of the gun body (61), and the moving driving mechanism (3) drives the nail clamping device (4) to move towards or away from the gun nozzle (62).