CN113172584B

CN113172584B - Nailing gun

Info

Publication number: CN113172584B
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: 2023-07-14
Anticipated expiration: 2041-04-20
Also published as: CN113172584A

Abstract

The invention provides a nailing gun, and belongs to the technical field of nailing guns. It has solved the trouble problem of getting after the staple of current nailing gun. A nailing gun is characterized in that a driver is arranged in a shell, a push rod structure capable of pushing a piston to reset to a first position is connected to an output shaft of the driver, a first sensor and a second sensor for detecting the position of the piston are arranged on a single cylinder body, the first sensor is located 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 a controller, and when the second sensor does not detect the position of the piston in one time in a nailing process, the controller controls the driver to drive the push rod structure, and the push rod structure pushes the piston to move to the first position for a certain distance. The piston moving nail taking device of the nailing gun has the advantage of safety in taking nails after the nails are clamped by 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

Nailing guns are a common tool and generally include a gun body, a striker, and a magazine. The working principle of the nailing gun is that a nail in a nail slot is struck by a firing pin, the nail is driven into a position where the nail is required to be driven, the nailing gun often has the condition of clamping nails and the like in use, and if no early warning is adopted under the condition, the specific problem of the nailing gun is difficult to find, and the normal use of the nailing gun can be influenced.

Various improvements have been made to the above problems, and some have also filed patents, for example, chinese patent literature discloses a detection device for nailing gun [ patent number: 201520950595.7; authorized bulletin number: CN205363784U ], the nailing gun comprises a shell and a firing pin which is arranged in the shell and can reciprocate, a nail outlet groove which can be used for placing a chain riveting is further formed in the shell, the detection device comprises a first sensor which is arranged in the shell and can detect whether the firing pin is abnormally blocked or not and a second sensor which can detect whether the inside of the nail groove is empty or not, and an indication structure which can respectively display the sensing state of the first sensor and the sensing state of the second sensor is fixedly arranged on the shell.

The nailing gun with the structure can detect whether the firing pin is abnormal or not through the detection device, and when the firing pin is abnormal, the firing pin is not moved to a set position, but the firing pin is not moved to a proper position, so that the possibility that the firing pin is blocked with the nail is high, and an operator is required to take out the clamping nail. However, when the staple is taken out, the surface cover needs to be opened, the striker is always propped against the staple, and the staple is very tight and is taken out in a troublesome manner. At the same time, when the cover is opened, the striker suddenly moves to spring the staple, and the staple is at a certain risk.

Disclosure of Invention

The invention aims at solving the problems in the prior art, and provides a piston moving nail taking device of a nailing gun, which solves the technical problem of improving the safety of taking nails after the nails are clamped by the nailing gun.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a nailing gun, includes the casing and sets up single cylinder body on the casing, is equipped with first piston that can remove between first position and second position in the single cylinder, and first piston is moved to the second position from first position and is a nail shooting process, and first power cavity that has been defined a variable volume in the single cylinder, has the nitrogen gas in the power cavity, the front end of casing is equipped with the nail floodgate that is used for storing the nail, is equipped with out the nail groove at the upper end of nail floodgate, first piston on be fixed with can get into out the nail groove and strike the striker of nail when first piston removes to the second position, its characterized in that still is equipped with the driver in the casing, be connected with the push rod structure that can promote first piston and reset to first position on the output shaft of driver, be equipped with first sensor and the second sensor that is used for detecting first position of piston on single cylinder, the second sensor is located the first position, just first sensor, second sensor and driver all link to control the driver, the first sensor is connected with the driver when first piston is moved to first piston, the first piston is moved to the first push rod structure to the first piston when the first piston is moved to the first position, the first piston is moved to the first piston to the control section.

The invention has the following working principle that a power cavity with variable volume is divided in a single cylinder by a piston I, nitrogen is filled in the power cavity, the piston I moves from a first position to a second position to form a nail shooting process, when the first sensor detects that the piston I is positioned at the first position in the nail shooting process, the power cavity is small in volume, the nitrogen in the power cavity is in a compressed state, the pressure is higher than the air pressure, the piston I is driven by the power provided by the nitrogen to move towards the nail outlet, the front end of the striker enters the nail outlet and hits a nail, when the second sensor does not detect that the piston I reaches the second position in the nail shooting process exceeds a period of time, the nail is bent when the striker enters the nail outlet and hits the nail, the nail is blocked at the outlet of the nail outlet, the striker is not pushed to the nail to move forward, the piston 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 striker structure can push the piston to move a certain distance towards the first position, and the nail is in a separation state, and the nail is pulled out of the cover after the nail is opened.

When the nailing gun disclosed by the invention is stuck with nails, the nail can be taken out by opening the nail slot cover without pressing the nails by the striker, the nails are convenient to take out, the force of the striker in the direction of the nail slot can be prevented from being applied when the nails are taken out, the damage caused by the bouncing of the nails is avoided, and the safety of taking the nails after the nails are stuck by the nailing gun is improved.

In the nailing gun, the nailing gun comprises a locking device used for locking the firing pin when the piston I is located at the first position, the locking device is connected with a controller, when the first sensor detects that the piston I is located at the first position and generates a first in-place signal, the controller receives the first in-place signal and sends out a locking signal to control the locking device to lock the firing pin, the controller is further connected with a nailing switch, the controller receives a pressing signal of the nailing switch and sends out an unlocking signal to the electromagnetic valve I to control the locking device to unlock, when the second sensor detects that the piston I is located at the second position, a second in-place signal is generated, and the controller receives the second in-place signal and sends out a driving signal to control the driver to push the piston I to move backwards to the first position. The locking device can be arranged at different positions of the nailing machine, the locking device has the effects that in order to lock the firing pin, the first sensor generates a first in-place signal when detecting that the piston is at a first position, the controller receives the first in-place signal and sends out a locking signal to control the locking device to lock, at the moment, the power cavity is small in volume, nitrogen in the power cavity is in a compressed state, the pressure is higher than the air pressure, after the nailing switch is pressed down, the controller receives a pressing signal, the controller controls the locking device to unlock, the piston pushes the firing pin to move towards the nail outlet groove when being provided by the nitrogen, and the front end of the firing pin enters the nail outlet groove and impacts nails to realize nail shooting; when the one-time nailing 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 controls the driver to push the first piston to move backwards to the first position after receiving the second in-place signal, the controller controls the locking device to lock, and the nailing switch is pressed down to repeat the nailing process.

In the nailing gun, the locking device comprises a locking block hinged on the shell, and the locking block is controlled to act by a solenoid valve connected with the controller. The lock block is provided in the housing and directly acts on the striker to lock the striker.

In the nailing gun, the locking device comprises a brake pad arranged on the driver, the brake pad is controlled by a second electromagnetic valve connected with the controller, and the controller receives the first in-place signal and sends out a locking signal to control the second electromagnetic valve to enable the brake pad to control the driver to be locked. The brake block and the electromagnetic valve II are arranged on the driver, and when the driver is locked by the brake block of the driver, the output shaft of the driver is locked, so that the push rod structure locks the piston I, and the firing pin does not move.

In the nailing gun, the push rod structure comprises a push rod, the push rod is axially arranged along the cylinder body, one end of the push rod is fixedly connected with the piston I, a through hole for the push rod to penetrate out of the shell is formed in the shell, the push rod mechanism further comprises a gear, a rack is arranged on the push rod, and the rack is meshed with the gear. When stapling, the piston and the firing pin are moved backwards for a small distance through the gear and the rack, so that the firing pin does not press the staples any more, the staple slot cover is opened, and the staples are 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 is convenient to shoot; the matching of the gear and the rack has controllable moving distance and good action effect, and ensures that the piston can move in place; the through holes provide supporting and limiting functions, so that the racks can be installed in the shell, meanwhile, the racks are ensured to move according to the set positions, and the moving precision of the racks is improved. The rack arranged on the push rod means a structure that one rack is independently fixed on the push rod or the rack is directly processed on the push rod. The push rod structure can also push for the crank-link mechanism.

In the nailing gun, the nailing gun further comprises a pressure release cavity arranged at the bottom of the rear end of the shell, a piston II and a crank connecting rod mechanism connected with the piston II are arranged in the pressure release cavity, an electric device connected with the connecting rod mechanism is arranged at the rear end of the pressure release cavity, and the electric device is further electrically connected with the controller.

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

In the nailing gun, the driver comprises a first motor and a speed reducer, the speed reducer is connected with an output shaft of the first motor, the output shaft of the speed reducer is connected with the gear, a brake pad and a second electromagnetic valve connected with the brake pad are arranged on the first motor, the second electromagnetic valve is connected with the controller, and the brake pad and the second electromagnetic valve are arranged on the first motor. When the nailing switch is pressed down, the motor is powered off, the rack drives the gear to rotate, the gear drives the speed reducer to rotate to press down the nailing switch, the controller controls the locking block to unlock, the piston is driven by the power provided by nitrogen to drive the firing pin to move towards the direction of the nail outlet groove, the front end of the firing pin enters the nail outlet groove and impacts nails to realize nail shooting, at the moment, the motor is not operated, the rack drives the gear to rotate, and the gear drives the speed reducer to rotate, so that a certain buffering effect is achieved on the nail shooting of 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, the first sensor generates a first in-place signal when detecting that the first piston is in a first position, and the first motor is locked by the brake pad so as to lock the driver.

In the above-described nailing gun, the gear and rack are disposed below the striker, and the first sensor and the second sensor are disposed above the single cylinder. The gear and the rack are arranged below the firing pin, interference to the setting process is avoided, and the first sensor and the second sensor are arranged above the single cylinder body.

In the nailing machine, the push rod structure comprises a gear set and a pair of push rods which are symmetrically arranged along the axial direction of 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 a through hole 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 a weight reduction groove which is concavely arranged, and a reinforcing grid is arranged in the weight reduction groove. 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 by the arrangement of the weight reduction groove, the piston moves smoothly, and the strength of the piston is enough 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 detector judged the piston, can promote piston and firing pin through push rod structure and move a short distance backward, 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, thereby realizing nailing.

Drawings

FIG. 1 is a cross-sectional view of a first embodiment of the present nailer.

FIG. 2 is a schematic view of a first embodiment of the nailer.

Fig. 3 is a cross-sectional view of a first embodiment of the present nailer.

Fig. 4 is a schematic structural view of a second embodiment of the nailing gun.

Fig. 5 is a cross-sectional view of a second embodiment of the present nailer.

Fig. 6 is a cross-sectional view of a second embodiment of the present nailer.

Fig. 7 is a cross-sectional view of a second embodiment of the present nailer.

Fig. 8 is a cross-sectional view of a second embodiment of the present nailer.

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

In the figure, 1, a shell; 101. a through hole; 2. a single cylinder; 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 the 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 the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 4 to 6, the nailing machine 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 nailing 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 concavely arranged, 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 a 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, the first piston 3 is fixedly provided with a firing pin 4 which can enter the nail outlet groove 14 and strike nails when the first piston 3 moves to the second position, the housing 1 is hinged with a locking block 8, the locking block 8 is used for locking the firing pin 4 when the first piston 3 is positioned at the first position, the housing 1 is internally provided with a driver 6, the driver 6 comprises a first motor 61 and a speed reducer 62, an output shaft of the driver 6 is connected with a push rod structure 7, the push rod structure 7 comprises a push rod 71, the push rod 71 is axially arranged along a cylinder body, one end of the push rod 71 is fixedly connected with the piston, the housing 1 is provided with a through hole 101 for the push rod 71 to penetrate out of the housing, the push rod structure further comprises a gear 72, the push rod is provided with a rack 711, the rack 711 is meshed with the gear 72, the through hole 101 is square, and the fixing and limiting functions are played on the movement of the rack 711. The cylinder body is provided with a first sensor 9 and a second sensor 10 for detecting the position of the first piston 3 through an inductor on the first piston 3, the first sensor 9 is positioned at the first position, the second sensor 10 is positioned at the second position, and the first sensor 9, the second sensor 10 and the driver 6 are all connected with a controller 12.

As shown in fig. 5 and 6, nitrogen is filled in the power cavity 5, the first sensor 9 detects that the first piston 3 is at the first position and generates a first in-place signal, the controller 12 controls the first electromagnetic valve 201 to enable the locking block 8 to lock the firing pin 4 after receiving the first in-place signal, at the moment, the power cavity 5 is small in volume, the nitrogen in the power cavity 5 is in a compressed state, the pressure is higher than the air pressure, after the nailing switch 18 is pressed down, the controller 12 receives a pressing signal and sends an unlocking signal to the first electromagnetic valve 201, the first electromagnetic valve 201 controls the locking block 8 to unlock, and after the firing pin 4 is unlocked, the first piston 3 pushes the firing pin 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 firing pin 4 enters the nail outlet groove 14 and impacts nails 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, the gear 72 drives the speed reducer 62 to rotate, and a certain buffering effect is achieved on nail shooting of the nail gun; when the nailing switch 18 is pressed, the controller 12 receives the pressing signal of the nailing switch 18 and sends an unlocking signal to the first electromagnetic valve 201, the first electromagnetic valve 201 controls the locking block 8 to unlock, at the end of a nailing process, after a period of time is exceeded, the second sensor 10 does not detect that the first piston 3 reaches the second position, the period of time is greater than 1 second, because when the nail 4 enters the nail discharging groove 14 to strike the nail, the nail possibly bends, the nail is blocked at the outlet of the nail discharging groove 14, the nail 4 is propped against the nail and cannot move forward, so that the first piston 3 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 first piston 3 to move a distance to the first position, the first piston 3 moves to the first position along with the first piston 4, the nail is in a disengaging state, the cover of the nail discharging groove 14 is opened, the driver 6 drives the first piston 3 to move to the first position after the nail is taken out, and the nailing process is repeated.

Example two

As shown in fig. 1 and 2, in the second embodiment, which has substantially the same structure as the first embodiment, the nailing machine further comprises a pressure release cavity arranged at the bottom of the rear end of the casing 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 link 162, the crank 161 is hinged with the link 162, one end of the link 162 is connected with the second piston 15, a second motor 17 connected with the crank-link mechanism 16 is arranged at the rear end of the pressure release cavity, 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 staple, the controller 12 controls the motor two 17 to rotate, the motor two 17 makes the piston two 15 move downwards through the crank link mechanism 16, thereby expanding the volume of the power cavity 5, reducing the pressure in the power cavity 5, making the piston one 3 move to the first position, the firing pin 4 and the nail are in a disengaged state, the cover of the staple discharging slot 14 is opened to take out the nail, and after the nail is taken out, the controller 12 controls the piston two 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 symmetrically disposed along the axial direction of the single cylinder body 2, the push rods 71 are fixedly connected to the first piston 3, the pair of push rods 71 are provided with a rack 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 piston 3 can be improved by the provision of the pair of racks 711 and the gear set 72.

Example IV

As shown in fig. 9, the fourth embodiment is substantially identical to the second embodiment except that the first motor 61 of the driver 6 is provided with a brake pad 63 and a second solenoid valve 202, and the controller may control the second solenoid valve 202 to lock the first motor 61 by the brake pad 63, that is, the first sensor 9 generates a first in-place signal when detecting that the first piston 3 is in the first position, and the brake pad 63 locks the first motor 61 to lock the driver 6.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, the housing is used more herein; 11. a through hole; 2. a single cylinder; 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 for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with 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 piston I (3) capable of moving between a first position and a second position is arranged in the single cylinder body (2), the piston I (3) moves from the first position to the second position to form a nailing process, the piston I (3) delimits a power cavity (5) with a variable volume in the single cylinder body (2), nitrogen is filled in the power cavity (5), the front end of the shell (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), the piston I (3) is fixedly provided with a firing pin (4) capable of entering the nail outlet groove (14) and striking nails when the piston I (3) moves to the second position, the nailing gun is characterized in that the bottom of the rear end of the shell (1) is provided with a pressure release cavity for changing the volume of the power cavity (5), the pressure release cavity comprises an electric motor (17), the electric motor (17) is connected with a controller (12), the electric motor (17) is further connected with a push rod (7) in an axial direction, the push rod (7) is arranged in the push rod (7) and the push rod (7) is connected with the push rod (71), one end of push rod (71) links firmly with piston one (3), be equipped with on casing (1) and supply push rod (71) to wear out through-hole (101) in casing (1), push rod (71) mechanism still includes gear (72), be equipped with rack (711) on push rod (71), rack (711) and gear (72) mesh mutually, be equipped with on single cylinder (2) and be used for detecting first sensor (9) and second sensor (10) of piston one (3) position, first sensor (9) are located the first position, second sensor (10) are located the second position, just first sensor (9), second sensor (10) and driver all are connected with controller (12), in a nail shooting process, when piston one (3) are in place to second sensor (10) do not detect, controller (12) control driver (6) drive push rod structure (7), by push rod structure (7) are moved first position backward by first distance, the firing pin does not take place.

2. The nailing gun according to claim 1, wherein the nailing gun comprises a locking device for locking the striker (4) when the first piston (3) is in the first position, the locking device is connected with the controller (12), when the first sensor (9) detects that the first piston (3) is in the first position and generates a first in-place signal, the controller (12) receives the first in-place signal and sends out a locking signal to control the locking device to lock the striker (4), the controller (12) is also connected with a nailing switch (18), the controller (12) receives a pressing signal of the nailing switch (18) and sends out an unlocking signal to the first electromagnetic valve (201) to control the locking device to unlock, when the second sensor (10) detects that the first piston (3) is in the second position, the controller (12) receives the second in-place signal and sends out a driving signal to control the driver (6) to push the first piston (3) to move to the first position.

3. A nailer as claimed in claim 2, in which the locking means comprise a locking block (8) hinged to the housing (1), the locking block (8) being actuated by a solenoid valve (201) connected to the controller (12).

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

5. The nailing gun of claim 4 wherein the driver (6) comprises a motor one (61) and a decelerator (62), the input shaft of the decelerator (62) being connected to the output shaft of the motor one (61), the output shaft of the decelerator (62) being connected to the gear (72), the brake pad (63) and the solenoid valve two (202) being provided on the motor one (61).

6. A nailer as claimed in claim 4, characterised in that the gear (72) and rack (711) are arranged below the striker (4), and the first sensor (9) and the second sensor (10) are arranged above the single cylinder (2).