Rivet gun capable of automatically enhancing pushing force and pulling force

Abstract

The utility model belongs to the technical field of rivet guns, and particularly relates to a rivet gun capable of automatically enhancing thrust and tension, which comprises a gun body, an oil cylinder mounted in the gun body, an air cylinder mounted at the lower end of the gun body and positioned below the oil cylinder, a cylinder rod in transmission connection with a power output end between the oil cylinder and the air cylinder, and a lifting piston in sliding connection with the interior of the air cylinder. The lower end of the cylinder rod extends downwards into the cylinder and is fixedly connected with the middle of the upper end of the piston; when the right end of the rivet withdrawing pipe moves rightwards to the 1 / 2 position of the rightmost end of the puller sleeve, negative suction disappears after the rivet withdrawing pipe retreats to the 1 / 2 position close to the O-shaped sealing rubber ring for sealing, air is stored in the air cylinder in the non-negative suction state, it is guaranteed that the air pressure reaches the maximum value of input air pressure, and it is guaranteed that rivets are riveted and fastened in place; and the hollow piston rebounds and resets under the action of the reset spring and the compressed air in the cavity, and the hollow push rod, the hollow piston and the rivet withdrawing pipe quickly return to the initial positions, so that the problems that the piston is slow in reciprocating motion speed, insufficient in rivet riveting force and difficult to quickly reset after a rivet is riveted due to insufficient thrust and tension of an existing rivet gun are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the rivet gun, especially relates to an automatic enhancement thrust, pull rivet gun. BACKGROUND

[0002] The rivet gun is also called rivet gun and is mainly used for riveting of aluminum, iron and stainless steel plates. The rivet gun is mainly used for pulling rivets through combination of gas pressure and oil pressure. The rivet gun has the advantages of fast rivet speed and large rivet force. The pneumatic rivet gun is widely used in decoration, automobile manufacturing and modification, container, electric appliance, household appliance, instrument, luggage and mechanical manufacturing industries and is one of the most advanced riveting tools in the world.

[0003] The rivet gun on the market mainly uses a pneumatic piston push rod to compress hydraulic oil, so that the hydraulic oil filled in the rivet gun body pushes the pull rod piston in the rivet gun body to retreat, thereby achieving the purpose of rivet riveting. The rivet gun using combination of gas pressure and hydraulic pressure also has problems of insufficient tail section pulling force and slow pull rod piston reset speed.

[0004] The existing rivet gun is provided with a reset pressure spring relative to the tail of the pull rod piston in the gun body. Influenced by the reset pressure spring, when the rivet gun is operated to pull rivets, the counterforce is larger, the pulling force is more offset, the rivet needs larger pulling force to pull, the pulling force of the rivet gun is smaller, the rivet can not be pulled continuously, the rivet needs to be re-operated, and the production efficiency is reduced.

[0005] When the rivet gun completes one rivet operation, the rivet gun retreats under the action force of the tail pressure spring of the pull rod piston. At this time, the reset speed of the pull rod piston is completely affected by the spring force, the hydraulic oil is slowly returned, the pull rod piston is slowly reset, the preparation time of the next rivet operation is increased, and the production efficiency is reduced. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problems that the existing rivet gun has insufficient pushing force and pulling force, the piston reciprocating speed is slow, the riveting force on the rivet is insufficient, and the rivet is difficult to reset after riveting.

[0007] The utility model adopts the technical scheme that a kind of automatic enhancement thrust, pull rivet gun, including gun body, oil cylinder is installed in the gun body, the lower end of the gun body is installed with the air cylinder located below oil cylinder, power output end transmission connection has cylinder rod between oil cylinder and air cylinder, the air cylinder is slidably connected with lifting piston, and the lower end of the cylinder rod extends to the air cylinder inside and is fixedly connected with the middle of the upper end of the piston.

[0008] The piston is provided with an air inlet pipe adjacent to one side of the cylinder rod, the air inlet pipe is in sliding connection with the piston, an air exchange valve is installed at the upper end of the air inlet pipe, and a slide valve core is connected to the upper end of the air exchange valve through mechanical transmission.

[0009] The upper end of the gun body is provided with a self-suction nail sleeve, hollow push rods, hollow pistons, nail removal pipes, reset springs, Y-shaped sealing rubber rings, O-shaped sealing rubber rings and plugs are sequentially installed in the self-suction nail sleeve from left to right, the reset springs are sleeved on the periphery of the nail removal pipes, the nail removal pipes are in sliding connection with the right ends of the hollow push rods, and the reset springs and the Y-shaped sealing rubber rings are respectively sleeved on the left and right sides of the periphery of the nail removal pipes.

[0010] The left end of the self-suction nail sleeve is provided with a pull head sleeve, and the pull head sleeve is internally provided with a nail clamping claw, and the nail clamping claw is installed at the left end of the hollow push rod.

[0011] In the preferable technical scheme of the utility model, the nail removal pipe is made of aluminum alloy material, and the hollow push rod is made of steel material.

[0012] In the preferable technical scheme of the utility model, the slide valve core and the cylinder rod are provided with a valve body sealing ring therebetween, and the surface of the slide valve core is provided with a sleeve shell.

[0013] In the preferable technical scheme of the utility model, the upper left corner of the gun body is provided with a starting switch, the starting switch is internally provided with a trigger, the trigger is connected with the slide valve core through mechanical transmission, and the rear end of the gun body is provided with a high-pressure air input port which is in communication with the air exchange valve.

[0014] In the preferable technical scheme of the utility model, the left end of the pull head sleeve is provided with a pull nozzle, and the nail clamping claw is located at the right end of the pull nozzle.

[0015] In the preferable technical scheme of the utility model, the upper end of the oil cylinder is provided with a flow limiting valve which is arranged in the self-suction nail sleeve, and the flow limiting valve is in communication with the self-suction nail sleeve and the oil cylinder.

[0016] In the preferable technical scheme of the utility model, the right end of the self-suction nail sleeve is provided with a nail collecting bottle, the nail collecting bottle is installed at the right end of the plug, and ring covers and connectors are respectively installed between the left and right sides of the nail collecting bottle and the pull head sleeve.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The high-pressure air source is input through the external pipeline from the high-pressure air input port, the hand is held between the air cylinder and the pull head cover, the nail collecting bottle is directed to the face, the pull mouth is away from the face and close to the workpiece, the rivet is inserted from the pull mouth, the other end of the rivet is inserted into the workpiece, the starting switch is pressed to open the trigger, the air valve makes the high-pressure air input port and the air inlet guide tube inside through, the high-pressure air flows into the air inlet guide tube inside from the high-pressure air input port, the high-pressure air flows into the air cylinder inside along the air inlet guide tube and is located at the lower end of the lifting piston, the lifting piston moves up to make the hydraulic oil flow into the self-suction nail sleeve inside from the oil cylinder, the hollow push rod, the hollow piston and the nail withdrawing pipe are moved to the right (at this time, the visual angle during the hand holding operation is in the retreat state) by the oil pressure pushing action of the hydraulic oil, and at the same time, the high-pressure air will flow upwards along the oil cylinder around and between the inner walls of the cavity to the self-suction nail sleeve inside, at this time, the hydraulic oil generates negative pressure suction force for attracting the rivet in the pull head cover inside and between the return spring and the nail withdrawing pipe;

[0019] A complete enhanced tension assembly is composed of Y-shaped sealing rubber ring, O-shaped sealing rubber ring and plug, the hollow piston is in the initial position, the negative suction generator composed of the nail withdrawing pipe and the enhanced tension assembly are hollow structures and are arranged along the same axis in sequence, and is used for constituting the nail withdrawing channel and enhancing the thrust and tension, the negative suction generator generates negative suction force in the initial position to automatically suck the rivet, the hollow push rod, the hollow piston and the nail withdrawing pipe are moved to the right, and the nail withdrawing claw will make the rivet break the excess part after riveting, and the broken part of the rivet is sucked into the nail collecting bottle and is collected;

[0020] When the right end of the nail withdrawing pipe is moved to the right to the right end 1 / 2 position of the pull head cover (that is, the visual angle during the hand holding operation is retreated to the bottom end), the nail withdrawing pipe is retreated to the position close to the O-shaped sealing rubber ring and sealed in the 1 / 2 position, the negative suction is disappeared and closed, the air cylinder storage air is guaranteed to reach the maximum value of the input air pressure in the no negative suction state, the lifting piston is guaranteed to have the maximum air pressure to push the cylinder rod upwards until to the bottom, at this time, the compressed air is guaranteed to have enough pressure to push the lifting piston upwards until to the position, the pressure boosting effect is achieved, and it is beneficial to ensure that the rivet is riveted and fastened in place;

[0021] After the rivet riveting is completed, the starting switch is loosened, the trigger is reset, the air exchange valve is closed, the high-pressure air input port is closed to block the input of high-pressure air into the air exchange valve, the air exchange valve exhausts air, the air in the position below the lifting piston in the cylinder flows along the air inlet conduit, the air pressure in the cylinder below the lifting piston is reduced, the change of air pressure makes the lifting piston move downward, the hydraulic oil in the self-suction rivet sleeve flows downward to the oil cylinder, the oil pressure in the self-suction rivet sleeve at the left end of the hollow piston is less than the air pressure in the self-suction rivet sleeve at the right end of the hollow piston, the change of oil pressure makes the hollow push rod, the hollow piston and the rivet withdrawing pipe move to the left, after the negative suction around the reset spring in the self-suction rivet sleeve disappears, the residual air pressure here is boosted to the same air pressure value as the air source, and the hollow piston is pushed to move to the left, the hollow piston is reset by the reset spring, the hollow push rod, the hollow piston and the rivet withdrawing pipe quickly return to the initial position, and the negative suction force in the self-suction rivet sleeve is generated again. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a whole structure schematic view of the utility model;

[0023] Fig. 2 It is a whole left side three-dimensional effect view of the utility model;

[0024] Fig. 3 It is a whole right side three-dimensional effect view of the utility model.

[0025] In the drawing: 1, cylinder; 3, air inlet conduit; 4, oil cylinder; 5, valve body sealing ring; 6, slide valve core; 8, air exchange valve; 9, lifting piston; 10, cylinder rod; 16, starting switch; 23, sleeve; 27, trigger; 29, gun body; 40, self-suction rivet sleeve; 41, flow limiting valve; 43, ring cover; 44, pull head sleeve; 45, pull nozzle; 50, rivet clamping claw; 59, reset spring; 65, hollow push rod; 66, hollow piston; 71, rivet withdrawing pipe; 74, joint; 75, rivet collecting bottle; 79, Y-shaped sealing rubber ring; 81, plug; 83, O-shaped sealing rubber ring; 84, high-pressure air input port. DETAILED DESCRIPTION

[0026] Please refer to Figs. 1-3The utility model provides a technical scheme: an automatic enhancement thrust, pull force draws the nail gun, including the gun body 29, the inside oil cylinder 4 is installed to gun body 29, the lower end of gun body 29 is installed the air cylinder 1 of being located below oil cylinder 4, and the power output end transmission connection of oil cylinder 4 and air cylinder 1 has cylinder rod 10, and the inside lift piston 9 of air cylinder 1 is slidably connected, and cylinder rod 10 lower end extends to the inside air cylinder 1 and is fixedly connected with the upper end intermediate of piston, the piston is adjacent to cylinder rod 10 one side and is provided with the air inlet pipe 3 of inserting, and the air inlet pipe 3 is slidably connected with the piston, and the upper end of air inlet pipe 3 is installed with the air valve 8, and the upper end of air valve 8 is connected with the slide valve core 6 through mechanical transmission, the upper end of gun body 29 is installed with self-suction nail sleeve 40, and hollow push rod 65, hollow piston 66, nail pipe 71, reset spring 59, Y-shaped sealing rubber ring 79, O-shaped sealing rubber ring 83 and plug 81 are sequentially installed in self-suction nail sleeve 40 inside from left to right, and reset spring 59 is sleeved in the periphery of nail pipe 71, and nail pipe 71 is slidably connected at the right end of hollow push rod 65, and reset spring 59 and Y-shaped sealing rubber ring 79 are respectively sleeved in the periphery of nail pipe 71 left and right sides, the left end of self-suction nail sleeve 40 is installed with pull head sleeve 44, the rear end of gun body 29 is provided with the high pressure air input 84 of being through with air valve 8, and the surface of high pressure air input 84 has the pipeline connector, and the connector of connecting the air pipe to high pressure air input 84, and the high pressure air source is input from high pressure air input 84 through external pipeline, and simultaneously high pressure air will flow upwards along the periphery of oil cylinder 4 and between the inner wall of cavity and reach the inside of self-suction nail sleeve 40, and the high pressure airflow of high speed flow generates gas vortex in the inside of self-suction nail sleeve 40, and the air pressure gradually reduces here, and the negative pressure suction force for attracting rivet is generated in the inside of pull head sleeve 44 and between reset spring 59 and nail pipe 71.

[0027] Nail pipe 71 is made of aluminum alloy material, hollow push rod 65 is made of steel material, and is arranged to form a complete tension enhancement assembly by Y-shaped sealing rubber ring 79, O-shaped sealing rubber ring 83 and plug 81, hollow piston 66 is hollow structure and is sequentially arranged along the same axis in the initial position, and is used for constituting the nail removal channel and enhancing thrust and tension, and the negative suction generator is generated in the initial position, which is convenient for automatically sucking rivet.

[0028] The left end of the pull head cover 44 is provided with a pull nozzle 45, and the inside of the pull head cover 44 is provided with a clamping nail claw 50, the clamping nail claw 50 is installed at the left end of the hollow push rod 65, the clamping nail claw 50 is located at the right end of the pull nozzle 45, the part of the gun body 29 between the air cylinder 1 and the pull head cover 44 is held by hand, the self-sucking nail sleeve 40 is provided with a nail collecting bottle 75 at the right end, the nail collecting bottle 75 is installed at the right end of the plug 81, so that the nail collecting bottle 75 faces the face, and the pull nozzle 45 is away from the face and close to the workpiece, the rivet is inserted from the pull nozzle 45, the clamping nail claw 50 clamps the rivet, the other end of the rivet is inserted into the workpiece, the starting switch 16 is installed at the left upper corner of the gun body 29, the trigger 27 is installed in the starting switch 16, the trigger 27 is connected with the slide valve core 6 through mechanical transmission, the index finger is close to the starting switch 16, the trigger 27 is opened by pressing the starting switch 16, the trigger 27 drives the slide valve core 6 to move up through mechanical transmission, the slide valve core 6 moves up along the sleeve shell 23, the sleeve shell 23 is installed on the surface of the slide valve core 6, the sleeve shell 23 keeps the slide valve core 6 moving smoothly, the valve body sealing ring 5 is installed between the slide valve core 6 and the cylinder rod 10, the valve body sealing ring 5 is used to strengthen the sealing performance between the air exchange valve 8 and the air inlet pipe 3, the slide valve core 6 opens the air exchange valve 8, the air exchange valve 8 makes the high-pressure air input port 84 and the inside of the air inlet pipe 3 through, the high-pressure air flows into the inside of the air inlet pipe 3 from the high-pressure air input port 84, because the air inlet pipe 3 passes through the lifting piston 9, the high-pressure air flows into the inside of the air cylinder 1 along the air inlet pipe 3 and is located at the lower end of the lifting piston 9, the air pressure of the high-pressure air in the inside of the air cylinder 1 and at the lower end of the lifting piston 9 gradually rises, the air pressure makes the lifting piston 9 lift, the cylinder rod 10 moves up, the space in the oil cylinder 4 is gradually reduced by being extruded by the cylinder rod 10, the cylinder rod 10 and the oil cylinder 4 form a syringe structure, the cylinder rod 10 pushes the hydraulic oil pre-filled in the inside of the oil cylinder 4, the cylinder rod 10 shoots the hydraulic oil from the inside of the oil cylinder 4 to the pull head cover 44, the flow limiting valve 41 is installed in the inside of the self-sucking nail sleeve 40 at the upper end of the oil cylinder 4, the flow limiting valve 41 makes the self-sucking nail sleeve 40 and the oil cylinder 4 through, the hydraulic oil flows through the flow limiting valve 41, the lifting piston 9 moves up to make the hydraulic oil pumped from the oil cylinder 4 into the inside of the self-sucking nail sleeve 40, the flow limiting valve 41 limits the flow of the hydraulic oil to increase the oil pressure of the cylinder rod 10 pushing the hydraulic oil upwards, the oil pressure in the inside of the self-sucking nail sleeve 40 and at the left end of the hollow piston 66 is greater than the air pressure at the right end of the hollow piston 66, the hollow push rod 65, the hollow piston 66 and the rivet withdrawing pipe 71 are moved to the right by the oil pressure pushing effect of the hydraulic oil (at this time, the visual angle in the hand holding operation is in the retreat state), the hollow push rod 65, the hollow piston 66 and the rivet withdrawing pipe 71 move to the right, until the right end of the rivet withdrawing pipe 71 moves to the left end of the plug 81, the return spring 59 will be gradually compressed by the right-moving hollow piston 66 (the compressed return spring 59 will have a rebound force), the inside of the plug 81 is a hollow structure, the pull nail nozzle, the hollow push rod 65, the hollow piston 66 and the rivet withdrawing pipe 71 are used in cooperation to form a hollow pipeline channel structure,The clamp nail claw 50 will make the rivet after riveting to pull off the excess part of the rivet, and the part of the rivet pulled off is sucked into the inside of the rivet collecting bottle 75 to collect, and the left and right sides of the rivet collecting bottle 75 and the pull head cover 44 are respectively provided with a ring cover 43 and a joint 74, which are used to connect the rivet collecting bottle 75 and the self-sucking nail sleeve 40. After the inside of the rivet collecting bottle 75 is filled with the residual part of the nail, the rivet collecting bottle 75 can be disassembled to empty the nail.

[0029] When the right end of the rivet withdrawing pipe 71 moves to the rightmost 1 / 2 position inside the pull head cover 44 (that is, the hand-held operation view retreats to the bottom 1 / 2 position), at this time, the rivet withdrawing pipe 71 retreats to the O-shaped sealing rubber ring 83 for sealing, and when the rivet withdrawing pipe 71 retreats to the 1 / 2 position near the O-shaped sealing rubber ring 83 after sealing, the space containing high-pressure air in the self-sucking nail sleeve 40 disappears, and the negative suction around the reset spring 59 disappears, the air pressure in this area gradually increases to the same size as the high-pressure air input by the high-pressure air input port 84. The high-pressure air continues to be input into the cylinder 1 from the high-pressure air input port 84, and the high-pressure air source continuously inflates the inside of the cylinder 1. Under the condition of no negative suction, the air pressure in the cylinder 1 is guaranteed to reach the maximum value of the input air pressure, and the lifting piston 9 is guaranteed to have the maximum air pressure to push the cylinder rod 10 upwards until it reaches the bottom. At this time, the compressed air ensures enough air pressure to push the lifting piston 9 upwards until it reaches the position due to the closing of the negative suction generator, which plays a role in increasing the pressure and strengthening the rivet pulling force to the maximum value, which is beneficial to ensure that the rivet is riveted and fastened in place;

[0030] After riveting is completed, the start switch 16 is released, trigger 27 is reset, and the air exchange valve 8 is closed, thus closing the high-pressure air inlet 84 to prevent high-pressure air from entering the air exchange valve 8. The air exchange valve 8 is open to the outside atmosphere, and the air in the cylinder 1 below the lifting piston 9 flows into the air exchange valve 8 through the air intake pipe 3. The air exchange valve 8 exhausts air, causing the air pressure inside the cylinder 1 below the lifting piston 9 to decrease. A negative pressure suction is generated inside the cylinder 1 below the lifting piston 9. The change in air pressure causes the lifting piston 9 to move downwards, which in turn pushes the cylinder rod 1. Pulling down, the upper end of cylinder rod 10 slides downward inside cylinder 4, gradually increasing the internal space of cylinder 4. This creates a negative pressure suction force to draw in hydraulic oil. The oil pressure inside cylinder 4 is lower than the oil pressure inside the self-priming nail sleeve 40. The oil pressure inside the self-priming nail sleeve 40, located to the left of the hollow piston 66, is lower than the air pressure inside the self-priming nail sleeve 40, located to the right of the hollow piston 66. The return force of the return spring 59, combined with the residual air pressure inside the self-priming nail sleeve 40, pushes the hollow piston 66 to the left. After the negative suction disappears inside the self-priming nail sleeve 40 and around the return spring 59, the residual air pressure will push... The hollow piston 66 moves to the left, and the return spring 59 rebounds, causing the hollow piston 66 to move to the left inside the self-priming nail sleeve 40. Inside the self-priming nail sleeve 40, the hollow piston 66 pushes the lubricant to the left. This change in oil pressure causes the hollow push rod 65, the hollow piston 66, and the nail ejection tube 71 to move to the left (at this point, the hand-held operating view is in a forward-moving state). The hollow piston 66 is then reset by the rebound of the return spring 59. The rebounding return spring 59 increases the thrust of the hollow piston 66 moving to the left inside the self-priming nail sleeve 40, causing the hydraulic oil inside the self-priming nail sleeve 40 to flow downwards into the cylinder 4. The hollow push rod 65, hollow piston 66, and ejector tube 71 quickly return to their initial positions. The ejector tube 71 moves away from the O-ring seal 83. The leftward movement of the hollow piston 66 forces the air inside the pull head sleeve 44 to the left and out of the pull nozzle 45. Compressed air is discharged from the pull head sleeve 44, and negative suction is generated again inside the pull head sleeve 44. After the ejector tube 71 moves to the left, a gap is created inside the self-priming nail sleeve 40. The high-pressure air in the high-pressure air inlet 84 re-enters the self-priming nail sleeve 40, and negative suction is generated again inside the self-priming nail sleeve 40 to facilitate the next nail pulling action of the rivet gun.

[0031] The above steps demonstrate that the rivet gun has the advantages of sufficient thrust and pull, fast piston reciprocating speed, sufficient riveting force for rivets, and quick reset after rivet tightening.

Claims

1. An automatic enhanced thrust and tension pull nail gun comprising a gun body (29), characterized in that: an oil cylinder (4) is installed inside the gun body (29), a gas cylinder (1) is installed at the lower end of the gun body (29) below the oil cylinder (4), a cylinder rod (10) is drivingly connected between the power output end between the oil cylinder (4) and the gas cylinder (1), a lifting piston (9) is slidingly connected inside the gas cylinder (1), and the lower end of the cylinder rod (10) extends downward into the gas cylinder (1) and is fixedly connected to the middle of the upper end of the piston; an air inlet pipe (3) is provided on the side adjacent to the cylinder rod (10) of the piston, the air inlet pipe (3) is slidingly connected with the piston, a gas exchange valve (8) is installed at the upper end of the air inlet pipe (3), and a slide valve core (6) is mechanically connected to the upper end of the gas exchange valve (8); a self-suction nail sleeve (40) is installed at the upper end of the gun body (29), a hollow push rod (65), a hollow piston (66), a nail withdrawing pipe (71), a return spring (59), a Y-shaped sealing rubber ring (79), an O-shaped sealing rubber ring (83), and a plug (81) are installed in the self-suction nail sleeve (40) from left to right, the return spring (59) is sleeved on the outer periphery of the nail withdrawing pipe (71), the nail withdrawing pipe (71) is slidingly connected to the right end of the hollow push rod (65), and the return spring (59) and the Y-shaped sealing rubber ring (79) are respectively sleeved on the left and right sides of the outer periphery of the nail withdrawing pipe (71); a pull head sleeve (44) is installed at the left end of the self-suction nail sleeve (40), a nail clamping claw (50) is installed inside the pull head sleeve (44), and the nail clamping claw (50) is installed at the left end of the hollow push rod (65).

2. An automatic force-enhancing, tension, zip gun according to claim 1, characterized in that: The nail withdrawing pipe (71) is made of aluminum alloy material, and the hollow push rod (65) is made of steel material.

3. An automatic enhanced tension pull nail gun as claimed in claim 1, wherein: A valve body sealing ring (5) is installed between the slide valve core (6) and the cylinder rod (10), and a sleeve shell (23) is installed on the surface of the slide valve core (6).

4. An automatic power auger puller gun as defined in claim 1 wherein: A starting switch (16) is installed at the upper left corner of the gun body (29), a trigger (27) is installed inside the starting switch (16), the trigger (27) is mechanically connected with the slide valve core (6), and a high-pressure air inlet (84) is formed at the rear end of the gun body (29) and penetrates the gas exchange valve (8).

5. An automatic power auger puller gun as defined in claim 1 wherein: A pull nozzle (45) is installed at the left end of the pull head sleeve (44), and the nail clamping claw (50) is located at the right end of the pull nozzle (45).

6. An automatic power auger puller gun as defined in claim 1 wherein: A flow limiting valve (41) is installed at the upper end of the oil cylinder (4) and inside the self-suction nail sleeve (40), and the flow limiting valve (41) penetrates the self-suction nail sleeve (40) and the oil cylinder (4).

7. An automatic power enhanced tension pull nail gun as claimed in claim 1, wherein: A nail collecting bottle (75) is installed at the right end of the self-suction nail sleeve (40), the nail collecting bottle (75) is installed at the right end of the plug (81), and ring covers (43) and connectors (74) are respectively installed between the left and right sides of the nail collecting bottle (75) and the pull head sleeve (44).

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