CN113172584A

CN113172584A - Nailing gun

Info

Publication number: CN113172584A
Application number: CN202110421330.8A
Authority: CN
Inventors: 张华定
Original assignee: Taizhou Dingba Power Tools Co ltd
Current assignee: Taizhou Dingba Power Tools Co ltd
Priority date: 2020-11-06
Filing date: 2021-04-20
Publication date: 2021-07-27
Anticipated expiration: 2041-04-20
Also published as: CN113172584B

Abstract

The invention provides a nailing gun, and belongs to the technical field of nailing guns. It has solved the trouble problem of getting the nail behind the current nailing gun bail. The utility model provides a nailing gun, be equipped with the driver in the casing, be connected with on the output shaft of driver and can promote the first push rod structure that resets to the primary importance of piston, be equipped with first sensor and the second sensor that is used for detecting a piston position on the single cylinder body, first sensor is located the primary importance, the second sensor is located the second place, and first sensor, second sensor and driver all are connected with the controller, at once penetrating the nail in-process, the second sensor does not detect the first time that targets in place of piston, controller control driver drive push rod structure, push rod structure promotes the piston and moves one section distance to the primary importance. The piston moving nail taking device of the nailing gun has the advantage of safe nail taking after the nail clamping of the nailing gun.

Description

Nailing gun

Technical Field

The invention belongs to the technical field of nailing guns, and relates to a nailing gun.

Background

A nailing gun is a common tool and generally includes a gun body, a firing pin, and a nail ejection slot. The operating principle of nailing gun is that the firing pin strikes out the nail in the nail groove, drives into the position that required nailing was gone into with the nail, and the condition such as bail often can appear in use nailing gun, if do not have the early warning to discover the concrete problem of nailing gun under this kind of circumstances, can influence the normal use of nailing gun.

Various improvements have been made to solve the above problems, and patents have been filed, for example, chinese patent literature discloses a detection device for a nailing gun [ patent No.: 201520950595.7, respectively; authorization notice number: CN205363784U ], the nailing machine includes the casing and sets up the firing pin that can reciprocating motion in the casing, still is equipped with the play nail groove that can place the strip nail in the casing, and detection device is including setting up sensor one that can detect whether the firing pin is unusual to be blocked and can detect out whether empty sensor two in the nail groove in the casing, is fixed with on the casing and can shows the instruction structure of sensor one response state and sensor two response state respectively.

In the nailing gun with the structure, whether the firing pin is abnormal or not can be detected by the detection device, when the firing pin is abnormal, the situation that the firing pin does not move to the set position and does not move in place is shown, the possibility that the firing pin is clamped with the nail is high, and an operator needs to take out the nail. However, in the nailing gun having such a structure, it is necessary to open the face cover when removing the staple, and the striker always abuts against the staple when removing the staple, so that the staple is very tight and troublesome to remove. Meanwhile, when the cover is opened, the striker suddenly moves to bounce the staple, which is a problem and has a certain risk.

Disclosure of Invention

The invention aims to provide a piston moving nail taking device of a nailing machine, aiming at solving the technical problem of improving the safety of taking nails after being clamped by the nailing machine.

The purpose of the invention can be realized by the following technical scheme: a nailing gun comprises a shell and a single cylinder body arranged on the shell, wherein a first piston capable of moving between a first position and a second position is arranged in a single cylinder, the first piston moves from the first position to the second position to be a nail shooting process, the first piston defines a power cavity with a variable volume in the single cylinder body, nitrogen is filled in the power cavity, a nail brake for storing nails is arranged at the front end of the shell, a nail outlet groove is formed in the upper end of the nail brake, a firing pin capable of entering the nail outlet groove and striking a nail when the first piston moves to the second position is fixed on the first piston, the nailing gun is characterized in that a driver is further arranged in the shell, a push rod structure capable of pushing the first piston to reset to the first position is connected to an output shaft of the driver, a first sensor and a second sensor for detecting the position of the first piston are arranged on the single cylinder body, the first sensor is positioned at the first position, the second sensor is located at the second position, the first sensor, the second sensor and the driver are all connected with the controller, and in the process of nail shooting, when the second sensor does not detect that the piston is in place, the controller controls the driver to drive the push rod structure, and the piston is pushed by the push rod structure to move a distance to the first position.

The working principle of the invention is that a piston I divides a power cavity with variable volume in a single cylinder, the power cavity is filled with nitrogen, the piston I moves from a first position to a second position to be a nail shooting process, in the nail shooting process, when a first sensor detects that the piston I is at the first position, the volume of the power cavity is small, the nitrogen in the power cavity is in a compressed state, the pressure is larger than air pressure, the piston I is pushed by the power provided by the nitrogen to move towards a nail outlet groove, the front end of the striker enters the nail outlet groove and impacts a nail, in the nail shooting process, after a period of time, a second sensor does not detect that the piston I reaches the second position, the nail is bent when the striker enters the nail outlet groove and impacts the nail, the nail is clamped at the outlet groove, the striker pushes the nail and cannot move forwards, so that the piston I cannot reach the second position and cannot be detected by the second sensor, at the moment, the controller controls the driver to drive the push rod structure, the push rod structure can push the piston to move a distance to the first position, the striker and the nail are in a separation state, and the cover of the nail outlet groove is opened to take out the nail.

When the nailing gun has the nail clamping, the firing pin can not press the nail tightly, the nail can be taken out by opening the nail outlet groove cover, the nail is convenient to take out, the nail can be prevented from being forced to the nail outlet groove direction by the firing pin when taken out, the nail is prevented from being bounced to cause harm, and the safety of taking the nail after the nail clamping of the nailing gun is improved.

In an above-mentioned nailing gun, the nailing gun includes the locking device who is used for locking the firing pin when the piston is in the first position, and locking device and controller connection, and when the first sensor detects that the piston is located the first position and generates the first signal that targets in place, the controller receives the first signal that targets in place and sends locking signal control locking device and make the firing pin locking, still is connected with the nailing switch on the controller, the controller receives the pressing signal of nailing switch and sends unblock signal and make the unblock signal control locking device unblock for the solenoid valve, when the second sensor detects that the piston is located the second position, generates the second signal that targets in place, the controller receive the second signal that targets in place and send drive signal control driver and promote the piston and move backward to the first position. The locking device can be arranged at different positions of the nailing machine and is used for locking the firing pin, the first sensor generates a first in-place signal when detecting that the first piston is positioned at the first position, the controller receives the first in-place signal and sends a locking signal to control the locking device to be locked, at the moment, the volume of the power cavity is small, nitrogen in the power cavity is in a compressed state, the pressure is greater than air pressure, after the nailing switch is pressed, the controller receives a pressing signal, the controller controls the locking device to be unlocked, the first piston is pushed by power provided by the nitrogen to move towards the nail outlet groove, and the front end of the firing pin enters the nail outlet groove and impacts a nail to realize nail shooting; when the nail shooting process is finished, the second sensor detects that the first piston is located at the second position and generates a second in-place signal, the controller receives the second in-place signal and then controls the driver to push the first piston to move backwards to the first position, the controller controls the locking device to be locked, and the nail shooting process can be repeated by pressing the nailing switch.

In a nailing gun of the above-mentioned kind, the locking means comprises a locking block hinged to the housing, the locking block being actuated by a solenoid valve connected to the controller. The lock block is provided on the housing and directly acts on the striker, and can lock the striker.

In an above-mentioned nailing gun, locking device is including establishing the brake block on the driver, the brake block is by the second control of the solenoid valve of being connected with the controller, the controller receive the first signal that targets in place and send out two messenger brake block control drivers of locking signal control solenoid valve and lock. The brake block and the electromagnetic valve II are arranged on the driver, and when the driver is locked by the driver brake block, the output shaft of the driver is locked, so that the piston I is locked by the push rod structure, and the striker does not move.

In foretell nailing gun, the push rod structure includes the push rod, the axial setting of cylinder body is followed to the push rod, and the one end and the piston of push rod link firmly, be equipped with on the casing and supply the push rod to wear out the through-hole in the casing, push rod mechanism still includes the gear, be equipped with the rack on the push rod, rack and gear mesh mutually. During staple attachment, the piston and the firing pin move backwards for a short distance through the gear and the rack, so that the firing pin can not press the staple, the staple outlet groove cover is opened, and the staple is taken out; meanwhile, the driver drives the gear to rotate, the gear rotates to drive the rack to move along the axial direction of the cylinder body, and the rack pushes the piston to move towards the rear end of the cylinder body to compress the power cavity, so that the pressure of nitrogen in the power cavity is increased, and the nail shooting is convenient; the gear is matched with the rack, so that the moving distance is controllable, the action effect is good, and the piston can be ensured to move in place; the through hole is arranged to provide supporting and limiting effects, so that the rack can be installed in the shell, the rack is guaranteed to move according to a set position, and the moving precision of the rack is improved. The rack arranged on the push rod refers to a structure that a rack is independently fixed on the push rod or the rack is directly processed on the push rod. The push rod structure can also be used for pushing a crank connecting rod mechanism.

In foretell a nailing machine, the nailing machine is still including setting up the pressure release cavity in casing rear end bottom, install piston two in the pressure release cavity and the crank link mechanism who is connected with piston two, the electric ware that is connected with link mechanism is installed to pressure release cavity rear end, the electric ware still links to each other with the controller electricity.

In the nailing gun, the crank-link mechanism comprises a crank and a connecting rod hinged with the crank, one end of the connecting rod is connected with the second piston, and an output shaft of the second motor is connected with the crank.

In foretell nailing gun, the driver includes motor one and reduction gear, and the reduction gear is connected with motor output shaft, the output shaft of reduction gear with gear connection, be equipped with brake block and the second solenoid valve of being connected with the brake block on the motor one, second solenoid valve is connected with the controller, brake block and second solenoid valve are established on motor one. When the nailing switch is pressed down, the first motor is powered off, the rack drives the gear to rotate, the gear drives the speed reducer to rotate and press the nailing switch, the controller controls the locking block to unlock, the first piston pushes the striker to move towards the nail outlet groove under the power provided by nitrogen, the front end of the striker enters the nail outlet groove and impacts a nail to realize nail shooting, and at the moment, the first motor does not work, the rack drives the gear to rotate, the gear drives the speed reducer to rotate, and a certain buffering effect is realized on the nail shot by the nailing gun; the first motor is provided with a brake pad and a second electromagnetic valve, the controller can control the first motor to be locked by controlling the second electromagnetic valve, namely a first sensor detects that the first piston is located at a first position and generates a first in-place signal, and the first motor is locked by the brake pad, so that the driver is locked.

In the above-described nailing gun, the gear and the rack are provided below the striker, and the first sensor and the second sensor are provided above the single cylinder body. The gear and the rack are arranged below the firing pin, so that interference on a setting process can be avoided, and the first sensor and the second sensor are arranged above the single cylinder body.

In the nailing gun, the push rod structure comprises a gear set and a pair of push rods axially and symmetrically arranged along the single cylinder body, the push rods are fixedly connected to the first piston, the pair of push rods are provided with racks, the pair of racks are respectively meshed with the gear set, the shell is provided with through holes for the pair of push rods to penetrate out of the shell, the rear end face of the first piston is a flat plane, the front end face of the first piston is provided with weight reduction grooves which are concavely arranged, and reinforcing grids are arranged in the weight reduction grooves. The rear end face of the piston is a flat plane, so that the force of the power cavity acting on the piston is stable, the weight of the piston is reduced due to the weight reduction groove, the piston moves smoothly, and the piston has enough strength due to the arrangement of the reinforcing grid.

Compared with the prior art, the nailing gun provided by the invention has the following advantages:

1. this nailing gun passes through the position that the piston was judged to the detector, can promote piston and firing pin through the push rod structure and remove a small segment distance towards the back, and it is convenient to get the nail, and improves the security.

2. The driver and the push rod structure of the nailing gun can push the piston to move to compress the power cavity, so that the pressure of nitrogen in the power cavity is greater than that of outside air, and when the pressure of the nitrogen is released, the piston and the firing pin can be driven to move to realize nail shooting.

Drawings

FIG. 1 is a sectional view of a nailing machine according to a first embodiment of the present invention.

FIG. 2 is a schematic structural view of a first embodiment of the nailing gun.

FIG. 3 is a sectional view of the nailing machine in accordance with the first embodiment.

FIG. 4 is a schematic structural view of a second embodiment of the nailing machine.

FIG. 5 is a sectional view of a second embodiment of the nailing machine.

FIG. 6 is a sectional view of a second embodiment of the nailing machine.

FIG. 7 is a sectional view of a second embodiment of the nailing machine.

FIG. 8 is a sectional view of a second embodiment of the nailing machine.

FIG. 9 is a sectional view of a fourth embodiment of the nailing machine

In the figure, 1, a housing; 101. a through hole; 2. a single cylinder body; 3. a first piston; 31. a weight reduction groove; 32. reinforcing the grid; 4. a striker; 5. a power cavity; 6. a driver; 61. a first motor; 62. a speed reducer; 63. a brake pad; 7. a push rod structure; 71. a push rod; 711. a rack; 72. a gear; 8. a locking block; 9. a first sensor; 10. a second sensor; 11. an inductive element; 12. a controller; 13. nailing a gate; 14. a nail outlet groove; 15. a second piston; 16. a crank link mechanism; 161. a crank; 162. a connecting rod; 17. a second motor; 18. a nailing switch; 19. a gasket; 201. a first electromagnetic valve; 202. and a second electromagnetic valve.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 4-6, the nailing gun comprises a housing 1 and a single cylinder 2 arranged on the housing 1, a piston 3 capable of moving between a first position and a second position is arranged in the single cylinder 2, the piston 3 moves from the first position to the second position for a nail shooting process, a sensing element 11 is arranged on the piston 3, the rear end surface of the piston 3 is a flat plane, the front end surface of the piston 3 is provided with a weight reducing groove 31 arranged in a concave manner, a reinforcing grid 32 is arranged in the weight reducing groove 31, the piston 3 is also provided with a gasket 19, the piston 3 defines a power cavity 5 with variable volume in the single cylinder 2 through the gasket 19, the front end of the housing 1 is provided with a nail gate 13 for storing nails, the upper end of the nail gate 13 is provided with a nail outlet groove 14, a striker 4 capable of entering the nail outlet groove 14 and striking a nail is fixed on the piston 3 when the piston 3 moves to the second position, articulated on casing 1 have locking block 8, locking block 8 is used for locking firing pin 4 when piston 3 is in the first position, still be provided with driver 6 in the casing 1, driver 6 includes motor 61 and reduction gear 62, connect push rod structure 7 on the output shaft of driver 6, push rod structure 7 includes push rod 71, push rod 71 sets up along the axial of cylinder body, the one end and the piston of push rod 71 link firmly, be equipped with on casing 1 and supply push rod 71 to pass through hole 101 in the shell, push rod structure still includes gear 72, be equipped with rack 711 on the push rod, rack 711 and gear 72 mesh mutually, through-hole 101 is square, play fixed and spacing effect to the motion of rack 711. Be equipped with on the cylinder body and be used for detecting first sensor 9 and the second sensor 10 of piston 3 position through the inductor on the piston 3, first sensor 9 is located the first position, and second sensor 10 is located the second position, just first sensor 9, second sensor 10 and driver 6 all be connected with controller 12.

As shown in fig. 5 and 6, the power cavity 5 is filled with nitrogen, the first sensor 9 detects that the first piston 3 is at the first position and generates a first in-place signal, after the controller receives the first in-place signal, the controller 12 controls the first solenoid valve 201 to enable the locking block 8 to lock the striker 4, at the moment, the volume of the power cavity 5 is small, the nitrogen in the power cavity 5 is in a compressed state, the pressure is greater than the air pressure, after the nailing switch 18 is pressed down, the controller 12 receives the pressing signal and sends an unlocking signal to the first solenoid valve 201, the first solenoid valve 201 controls the locking block 8 to unlock, after the striker 4 is unlocked, the first piston 3 pushes the striker 4 to move towards the direction of the nail outlet groove 14 under the power provided by the nitrogen, and the front end of the striker 4 enters the nail outlet groove 14 and impacts a nail to realize nail shooting; as shown in fig. 7 and 8, after the nail shooting is finished, the second sensor 10 detects that the first piston 3 is at the second position and generates a second in-place signal, the controller 12 receives the second in-place signal and controls the driver 6 to push the first piston 3 to move backwards to the first position, the nail shooting process can be repeated by pressing the nailing switch 18, the first motor 61 does not work in the nail shooting process, the rack 711 drives the gear 72 to rotate, and the gear 72 drives the reducer 62 to rotate, so that a certain buffering effect is achieved on the nail shooting of the nail shooting gun; when the nailing switch 18 is pressed down, the controller 12 receives a pressing signal of the nailing switch 18 and sends an unlocking signal to the solenoid valve I201, the solenoid valve I201 controls the locking block 8 to unlock, and when a period of time is over, the second sensor 10 does not detect that the piston I3 reaches the second position, wherein the period of time is more than 1 second, because when the striker 4 enters the nail outlet groove 14 to strike a nail, the nail may be bent, the nail is stuck at the outlet of the nail outlet groove 14, the striker 4 is pushed to the nail and cannot move forwards, so that the piston I3 cannot reach the second position and cannot be detected by the second sensor 10, at the moment, the controller 12 controls the push rod structure 7 driven by the driver 6, the push rod structure 7 pushes the piston I3 to move a distance to the first position, the striker 4 moves to the first position along with the piston I3, and the striker 4 and the nail are in a separation state, and (3) opening the cover of the nail outlet groove 14 to take out the nail, and after the nail is taken out, the driver 6 drives the push rod structure 7 to push the piston I3 to move to the first position, and the nail shooting process is repeated.

Example two

As shown in fig. 1 and 2, the second embodiment is substantially the same as the first embodiment, in the second embodiment, the nailing gun further comprises a pressure release cavity arranged at the bottom of the rear end of the housing 1, a second piston 15 and a crank link mechanism 16 connected with the second piston 15 are arranged in the pressure release cavity, the second piston 15 is provided with a gasket 19, the second piston 15 separates the pressure release cavity from the power cavity 5 through the gasket 19, the crank link mechanism 16 comprises a crank 161 and a connecting rod 162, the crank 161 is hinged with the connecting rod 162, one end of the connecting rod 162 is connected with the second piston 15, the rear end of the pressure release cavity is provided with a second motor 17 connected with the crank link mechanism 16, an output shaft of the second motor 17 is connected with the crank 161, and the second motor 17 is further electrically connected with the controller 12.

As shown in fig. 1 and 3, when the nailing machine has a nail jam, the controller 12 controls the second motor 17 to rotate, the second motor 17 moves the second piston 15 downwards through the crank-link mechanism 16, so as to enlarge the volume of the power cavity 5, reduce the pressure in the power cavity 5, move the first piston 3 to the first position, keep the striker 4 and the nail in a disengaged state, open the cover of the nail outlet groove 14 to take out the nail, and after the nail is taken out, the controller 12 controls the second piston 15 to return to the initial position.

EXAMPLE III

The third embodiment is substantially the same as the first embodiment, except that the push rod structure 7 includes a gear set 72 and a pair of push rods 71 arranged axially symmetrically along the single cylinder 2, the push rods 71 are both fixedly connected to the first piston 3, the pair of push rods 71 are provided with racks 711, the pair of racks 711 are respectively engaged with the gear set 72, and the housing 1 is further provided with a through hole 101 for the pair of push rods 71 to pass through the housing. The stability of the operation of the first piston 3 can be improved by the arrangement of the pair of racks 711 and the gear set 72.

Example four

As shown in fig. 9, the fourth embodiment has substantially the same structure as the second embodiment, except that the first motor 61 of the actuator 6 is provided with the brake pad 63 and the second solenoid valve 202, and the controller can control the second motor 61 to lock the brake pad 63 by controlling the second solenoid valve 202, that is, the first sensor 9 generates the first in-position signal when detecting that the first piston 3 is at the first position, and the brake pad 63 locks the first motor 61 to lock the actuator 6.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although 1, the housing is used more herein; 11. a through hole; 2. a single cylinder body; 3. a first piston; 31. a weight reduction groove; 32. reinforcing the grid; 4. a striker; 5. a power cavity; 6. a driver; 61. a first motor; 62. a speed reducer; 7. a push rod structure; 71. a push rod; 711. a rack; 72. a gear; 8. locking blocks, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The nailing gun comprises a shell (1) and a single cylinder body (2) arranged on the shell (1), wherein a first piston (3) capable of moving between a first position and a second position is arranged in the single cylinder body (2), the first piston (3) moves from the first position to the second position and is used for a nail shooting process, a power cavity (5) with a variable volume is defined in the single cylinder body (2) by the first piston (3), nitrogen is filled in the power cavity (5), a nail brake (13) used for storing nails is arranged at the front end of the shell (1), a nail outlet groove (14) is formed in the upper end of the nail brake (13), a striker (4) capable of entering the nail outlet groove (14) and striking nails when the first piston (3) moves to the second position is fixed on the first piston (3), and is characterized in that a driver (6) is further arranged in the shell (1), and an output shaft of the driver (6) is connected with a driver (6) capable of pushing the first piston (3) to reset to the first position Push rod structure (7), be equipped with first sensor (9) and second sensor (10) that are used for detecting piston (3) position on single cylinder (2), first sensor (9) are located the first position, and second sensor (10) are located the second position, just first sensor (9), second sensor (10) and driver all be connected with controller (12), at a nail shooting in-process, when second sensor (10) do not detect piston (3) and put in place, controller (12) control driver (6) drive push rod structure (7), by push rod structure (7) promote piston (3) to first position and remove a section distance.

2. A nailing gun as claimed in claim 1, wherein the nailing gun includes a locking means for locking the striker (4) when the first piston (3) is in the first position, and the locking means is connected to the controller (12), and generates a first in-position signal when the first sensor (9) detects that the first piston (3) is in the first position, the controller (12) receives the first in-position signal and transmits a locking signal to control the locking means to lock the striker (4), and a nailing switch (18) is connected to the controller (12), and the controller (12) receives a pressing signal of the nailing switch (18) and transmits an unlocking signal to the first solenoid (201) to control the locking means to unlock the first solenoid (201), and generates a second in-position signal when the second sensor (10) detects that the first piston (3) is in the second position, and the controller (12) receives the second in-position signal and transmits a driving signal to control the driver (6) to push the driver (6) The first movable piston (3) moves backwards to the first position.

3. A nailing gun according to claim 2, wherein the locking means comprises a locking block (8) hinged to the housing (1), the locking block (8) being controlled by a first solenoid valve (201) connected to the controller (12).

4. A nailing gun as claimed in claim 2, wherein the locking means comprises a brake pad (63) provided on the driver (6), the brake pad (63) being controlled by a second solenoid (202) connected to the controller (12), the controller (12) receiving the first in-position signal and generating a locking signal to control the second solenoid (202) (82) to lock the driver (6) by the brake pad (63).

5. A nailing gun according to claim 2 or 3, wherein the push rod structure (7) comprises a push rod (71), the push rod (71) is arranged along the axial direction of the cylinder body, one end of the push rod (71) is fixedly connected with the first piston (3), a through hole (101) for the push rod (71) to penetrate through the housing (1) is arranged on the housing (1), the push rod (71) mechanism further comprises a gear (72), a rack (711) is arranged on the push rod (71), and the rack (711) is meshed with the gear (72).

6. A nailing gun according to claim 1, 3 or 4, further comprising a pressure release cavity provided at the bottom of the rear end of the housing (1), wherein a second piston (15) and a crank link mechanism (16) connected with the second piston (15) are mounted in the pressure release cavity, an electric actuator (17) connected with the crank link mechanism (16) is mounted at the rear end of the pressure release cavity, and the electric actuator (17) is further electrically connected with the controller (12).

7. A nailing gun according to claim 6, wherein said crank-link mechanism (16) comprises a crank (161) and a link (162) hinged to the crank (161), one end of the link (162) being connected to the second piston (15), and an output shaft of the second motor (17) being connected to the crank (161).

8. A nailing gun according to claim 4, wherein the driver (6) comprises a first motor (61) and a speed reducer (62), an input shaft of the speed reducer (62) is connected with an output shaft of the first motor (61), an output shaft of the speed reducer (62) is connected with the gear (72), and the brake pad (63) and the second solenoid valve (202) are provided on the first motor (61).

9. A nailing gun according to claim 4, wherein the gear (72) and rack (711) are provided below the striker (4), and the first sensor (9) and second sensor (10) are provided above the single cylinder (2).

10. A nailing gun according to claim 1 or 2, wherein the push rod structure (7) comprises a gear (72) set and a pair of push rods (71) axially symmetrically arranged along the single cylinder (2), the push rods (71) are fixedly connected to the first piston (3), the pair of push rods (71) are provided with racks (711), the racks (711) are respectively engaged with the gear set (72), the housing (1) is provided with a through hole (101) for the pair of push rods (71) to penetrate, the rear end surface of the first piston (3) is a flat plane, the front end surface of the first piston (3) is provided with a weight reduction groove (31) concavely arranged, and the weight reduction groove (31) is provided with a reinforcing grid (32).