Rechargeable coil nail gun

Abstract

The rechargeable coil nail gun comprises a shell, a gun head and a nail box are arranged on the shell, the rechargeable coil nail gun further comprises a firing pin, a firing mechanism used for firing the firing pin and a lifting release mechanism used for lifting the firing pin, the firing mechanism comprises an air cylinder, the gun head is connected with an air cylinder base, the firing pin is fixed to a piston, and the firing end of the firing pin moves in a shape rail of the gun head; the lifting release mechanism comprises a transmission shaft, and a swing bearing and a movable fluted disc which are arranged on the transmission shaft, a plurality of cylindrical pins are arranged on the movable fluted disc, and the cylindrical pins on the movable fluted disc are in one-to-one correspondence with the convex teeth on the firing pin; fasteners are stored in the nail box and fed into the shape rail through the nail feeding claw. Wherein a nail feeding mechanism comprising a swing bearing is arranged on the transmission shaft, the transmission shaft rotates to drive the nail feeding mechanism through the swing bearing to drive the nail feeding claw to feed the fastener in the nail box into the channel of the gun head, and when the firing pin is located at the firing position, the nail feeding mechanism 4 drives the nail feeding claw to feed the fastener into the channel completely.

Description

Technical Field

[0001] The invention relates to a coil nail gun, in particular to a rechargeable coil nail gun. Background Art

[0002] Nail guns are products composed of a gun body and a magazine, including pneumatic nail guns, electric nail guns, etc. Among them, pneumatic nail guns are also called pneumatic nailing machines. Pneumatic nail guns use high-pressure gas generated by an air pump (air compressor) as a power source. The high-pressure gas drives the firing pin in the nail gun cylinder to do hammering motion, nailing the nails in the nail clip into the object or shooting the nails out.

[0003] The coil nail gun is a widely used tool for driving nails in the market. Compared with ordinary nail guns, the nails of the coil nail gun can be welded into hundreds of pieces at a certain pitch with iron wire and rolled into a circle and loaded into the nail box of the coil nail gun. The nail feeding claws then feed the nails one by one into the holes in the gun mouth. The nail feeding claw not only feeds nails, but also plays the role of fixing nails when the firing pin hits the nails. At present, the tool basically uses an air compressor as an air source and is connected to an air pipe for conveying the air source. For example, Chinese patent document CN218364531U discloses a nail feeding device and an electric nail rolling gun, wherein the nail feeding device includes: a cylinder body, a push rod and a nail feeding seat; a cavity with a front end opening in the cylinder body; the rear end of the push rod is movably arranged in the cavity, the front end of the push rod extends outward from the front end opening of the cylinder body, and the rear end of the push rod divides the cavity into a front cavity and a rear cavity; a reset member is arranged in the front cavity, and the rear end of the rear cavity has an air inlet, which is connected to external compressed gas to enable the push rod to move back and forth; the nail feeding seat is connected to the front end of the push rod, and an elastic member is arranged between the nail feeding seat and the push rod so that the push rod drives the nail feeding seat to swing up and down, and the nail feeding seat has a plurality of push teeth arranged at intervals. The push rod is provided with thrust through the air inlet, and the elastic force in the opposite direction is provided through the reset member. The thrust and the elastic force change alternately, so that the push rod reciprocates in the cavity, and the nail feeding seat moves synchronously to continuously feed nails, thereby realizing automatic nail feeding.

[0004] In the prior art, it is necessary to connect external compressed gas to make the push rod move back and forth to realize the nail feeding operation, so it is suitable for use in some fixed places such as indoors, without long-distance movement, etc., which is relatively convenient. However, for field work or high-altitude work, it is not only inconvenient, but also has potential safety hazards. Moreover, when the striker hits the nail, the front end surface of the nail feeding claw must be at the position of the blocking surface of the shape track of the gun barrel, and an external force is applied to keep the normal movement of the nail during nailing, and during the entire time when the striker is in the shape track of the gun barrel, the nail feeding claw moves to the nail grabbing position and remains stationary until the striker is outside the upper end of the shape track of the gun barrel, or outside the upper end of the nail cap, at which time the nail feeding claw starts to feed the nail. Such action design is due to the fact that the nails of the coil nail gun are welded from very thin iron wires. Before the striker is not at the upper end of the nail cap, the nail feeding claw starts to feed the nail, which will cause the pitch of the nail to change and cause the phenomenon of nail jamming.

[0005] Therefore, Chinese patent document CN115515754A discloses a power fastener driver including: a housing, a nose frame connected to and extending from the housing, a drive blade that can move between a ready position and a driven position in the nose frame, and a push mechanism, the push mechanism is connected to the nose frame to individually transfer the arranged fasteners in the can-type magazine to a drive channel in the nose frame, and the drive blade can move in the drive channel. The push mechanism includes a feed arm and a connecting rod between the feed arm and the drive blade. The feed arm can engage with each fastener in the nose frame to push each of the fasteners successively into the drive channel in response to the movement of the feed arm toward the drive channel. The connecting rod is movable to advance the feed arm toward the drive channel in response to contacting the drive blade as the drive blade moves from the driven position toward the ready position. In the prior art, a cam and a lever are used to drive the body to perform linear motion through a fork-shaped member, and then a feeding arm pushes the fastener into the driving channel to achieve a complete reloading cycle of the fastener into the driving channel. However, the nail feeding structure in the prior art is relatively complex, which increases the product cost. Summary of the invention

[0006] In order to solve the technical problem that the nail feeding structure in the prior art is relatively complicated, the present invention provides a rechargeable coil nail gun, comprising a shell, a gun head and a nail box are arranged on the shell, a firing pin, a firing mechanism for firing the firing pin and a lifting and releasing mechanism for lifting the firing pin, the firing mechanism comprising a gas storage device for storing a certain pressure gas, a cylinder arranged in the gas storage device, a cylinder seat and a piston in the cylinder, the gun head is connected to the cylinder seat, the firing pin is fixed on the piston, and the striking end of the firing pin moves in the shape track of the gun head; the lifting and releasing mechanism comprises a control system, a motor, a reduction box, a transmission shaft, and a swing bearing and a movable toothed disc on the transmission shaft, the movable toothed disc is provided with a plurality of cylindrical pins, and the cylindrical pins on the movable toothed disc correspond to the protruding teeth on the firing pin one by one; fasteners are stored in the nail box, and the fasteners are fed into the shape track by the nail feeding claws; Among them, a nail feeding mechanism including a rocking bearing is provided on the transmission shaft. The rotation of the transmission shaft drives the nail feeding mechanism through the rocking bearing to drive the nail feeding claw to feed the fasteners in the nail box into the channel of the gun head. When the firing pin is in the firing position, the nail feeding mechanism drives the nail feeding claw to feed the fasteners into the channel completely.

[0007] Compared with the prior art, on the one hand, in the present invention, a rocking bearing is used to replace the cam drive method in the prior art, and the structure is simpler. On the other hand, by utilizing the coordinated operation of the transmission shaft, the rocking bearing, the nail feeding mechanism and the nail feeding claw, during the rotation of the transmission shaft, when the firing pin is in the firing position, the nail feeding claw can just completely feed the fastener into the channel, thereby avoiding the occurrence of nail jamming.

[0008] Preferably, the nail feeding mechanism further comprises a nail feeding claw slider connected to the nail feeding claw, a connecting piece is provided at the farthest end of the swing rod of the rocking bearing, a slide groove having a length greater than the connecting piece is provided on the nail feeding claw slider, and the connecting piece is located in the slide groove. In this solution, the driving shaft drives the nail feeding claw by utilizing the cooperation between the nail feeding claw slider and the rocking bearing, and the structure is simple.

[0009] Preferably, a guide seat and a support sleeve are provided on the gun head, one end of the nail feeding claw slider is located in the guide seat, and the other end is located in the support sleeve. This solution realizes the installation of the nail feeding claw slider on the gun head, and the structure is simple.

[0010] Preferably, one end of the nail-feeding claw slider is a large cylinder, and the other end is a small cylinder, the slide slot is located on the large cylinder, and the small cylinder is covered with a return spring. This solution realizes the installation of the nail-feeding claw slider on the housing, and the structure is simple.

[0011] Preferably, one end of the reset spring abuts against the end surface of the support sleeve, and the other end abuts against the end surface of the large cylinder. In this solution, the reset spring can be used to achieve automatic reset of the nail feeding claw slider.

[0012] Preferably, the connecting member is a steel ball with a hole. In this solution, the steel ball with a hole is used as the connecting member, which can ensure the service life of the connecting member on the one hand, and ensure the normal movement of the connecting member in the slide groove on the other hand.

[0013] Preferably, the nail-feeding claw slider is provided with a protrusion, and the nail-feeding claw is hinged to the protrusion. This solution realizes the connection between the nail-feeding claw slider and the nail-feeding claw, and the structure is simple.

[0014] Preferably, the striker includes a striking piece and a toothed moving piece, the moving piece is driven by the firing mechanism and the movable toothed disc, and the striking piece and the moving piece are detachably connected. In this solution, the existing toothed striker is divided into a toothed moving piece and a striking piece for striking the fastener, so that during the use of the fastener driving tool, only the striking piece will be damaged, and when replacing it, it is only necessary to remove the striking piece, which is convenient for replacement and maintenance.

[0015] Preferably, an end plate is provided on the transmission shaft, and the movable toothed disc is fixed to the end plate by a cylindrical pin therein, and the movable toothed disc can swing appropriately in the arc hole formed by the movable toothed disc with the cylindrical pin as the center and the transmission shaft center as the radius. This solution realizes the transmission connection between the movable toothed disc and the transmission shaft, and has a simple structure.

[0016] Preferably, the swing bearing is connected and fixed to the transmission shaft via a spline. This solution realizes the connection between the swing bearing and the transmission shaft, and has a simple structure.

[0017] Preferably, a spline tooth mark is provided on the swing bearing, and a spline groove mark corresponding to the spline tooth mark is provided on the transmission shaft. In this solution, the spline tooth mark and the spline groove mark are provided to facilitate corresponding assembly when assembling the swing bearing and the transmission shaft, so as to ensure the normal nail feeding operation of the nail feeding structure.

[0018] Preferably, during the rotation of the transmission shaft, when the striking piece is at the upper end of the fastener, at least one cylindrical pin on the movable toothed disc meshes with the corresponding tooth on the moving piece, the connecting piece moves within the idle stroke of the slide groove, and the front end surface of the nail-delivering claw abuts against the blocking surface of the shape track of the gun head; when the firing pin is in the firing position, the connecting piece moves within the idle stroke of the slide groove, and the front end surface of the nail-delivering claw abuts against the blocking surface of the shape track of the gun head; after the firing pin is fired, the striking piece is at the lower end, and the rocking bearing passes the maximum value of the forward inclination angle with the rotation of the transmission shaft and begins to move toward the backward inclination angle, and the connecting piece is in the idle stroke position; the firing pin begins to move upward and the piston compresses the gas in the gas storage device, and the rocking bearing, driven by the transmission shaft, begins to move backward The connecting part starts to move backward in the idle stroke; when the firing pin is driven by the movable toothed disc to move upward from the bottom, the rocking bearing continues to move backward in the tilt angle with the rotation of the transmission shaft, and the connecting part moves toward the support sleeve driven by the rocker arm until it contacts the nail-feeding claw slider, so that the nail-feeding claw slider presses the reset spring and moves toward the support sleeve together, until the nail-feeding claw grabs the next fastener and the rocking bearing starts to move forward in the tilt angle direction: when the striking part of the firing pin is just higher than the upper top surface of the fastener, the rocking bearing continues to move forward in the direction of the maximum tilt angle with the rotation of the transmission shaft, and the connecting part contacts the wall at the rear end of the nail-feeding claw slider, and the front end of the nail-feeding claw is still a certain distance away from the shape track blocking surface of the gun head. This solution realizes a single firing cycle of the fastener and is easy to operate.

[0019] The present invention has the following beneficial effects: The present invention cooperates with the movable toothed disk fixed on the transmission shaft through the spline connection between the transmission shaft and the inner hole of the rocking bearing to rotate, so that the farthest end of the rocking arm of the rocking bearing can drive the nail feeding claw to move forward and backward through the connection pair of the ball with a hole and the slider of the nail feeding claw, thereby realizing a cycle of coordinated fastener feeding. At the same time, the toothed firing pin can also be lifted to the standby position by firing the fastener, waiting for the next firing process. The structure is simpler and the product cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of an embodiment of a rechargeable nail gun of the present invention; Figure 2 It is a structural schematic diagram of the swing bearing, the nail feeding claw slider and the nail feeding claw part; Figure 3 (a) is a schematic diagram of a rocking bearing; Figure 3 (b) is a cross-sectional view of the rocking bearing; Figure 4 (a) is a schematic diagram of the support sleeve①; Figure 4 (b) is a schematic diagram of the support sleeve ②; Figure 4 (c) is a schematic diagram of the support sleeve ③; Figure 4 (d) is a cross-sectional view of the support sleeve; Figure 5 (a) is a schematic diagram of the nail feeding claw slider①; Figure 5 (b) is a schematic diagram of the nail feeding claw slider②; Figure 5 (c) is a schematic diagram of the nail feeding claw slider ③; Figure 5 (d) is a cross-sectional view of the nail feeding claw slider; Figure 6 is a schematic diagram showing the firing pin in a standby position; Figure 7 for Figure 6 Middle AA partial section view; Figure 8 for Figure 7 Partial cross-sectional view of CC; Fig. 9 It is a partial structural schematic diagram of a rechargeable coil nail gun; Fig.10 for Figure 6 A partial enlarged schematic diagram of point Ⅰ in the middle: Fig.11 is a schematic diagram of the firing pin in the firing position; Fig.12 for Fig.11 Middle AA partial section view; Fig.13 for Fig.12 Partial cross-sectional view of CC; Fig.14 It is a partial structural schematic diagram of a rechargeable coil nail gun; Fig.15 for Fig.11 A partial enlarged schematic diagram of the middle II: Fig.16 It is a schematic diagram when the striking piece of the firing pin is at the lowest end; Fig.17 for Fig.16 Middle AA partial section view; Fig.18 for Fig.17 Partial cross-sectional view of CC; Fig.19 It is a partial structural schematic diagram of a rechargeable coil nail gun; Fig. 20 for Fig.16 Partial enlarged schematic diagram of point III in the middle: Fig.21 It is the position of the striker when the rocking bearing is at the maximum tilt angle; Fig. 22 for Fig.21 Middle AA partial section view; Fig.23 for Fig. 22 Partial cross-sectional view of CC; Fig.24 It is a partial structural schematic diagram of a rechargeable coil nail gun; Fig.25 for Fig.21 A partial enlarged schematic diagram of point IV in the middle: Fig.26 It is a schematic diagram when the striking piece of the firing pin is higher than the upper top surface of the fastener; Fig. 27 for Fig.26 Middle AA partial section view; Fig.28 for Fig. 27 Partial cross-sectional view of CC; Fig.29 for Fig.28 Partial cross-sectional view of the middle FF; Fig.30 for Fig.26 A partial enlarged schematic diagram of point V in the middle: Fig.31 It is a partial structural schematic diagram of a rechargeable coil nail gun; Fig.32 It is a local schematic diagram when the tilt angle of the rocking bearing is the largest; Fig.33 for Fig.32 Schematic diagram of the middle A direction; Fig.34 (a) is a schematic diagram of the structure of the firing pin; Fig.34 (b) is a schematic diagram of the assembly of the firing pin; Fig.35 Schematic diagram of coil nail. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods: 1. Definition Coil nails: It consists of a group of single nails of the same shape and arranged equidistantly and connectors. The connectors can be copper-plated iron wires. The connectors are connected to each nail at an angle β to the center line of each nail rod, connecting the nails together and then rolling them into a roll.

[0022] Swing bearing: Swing bearing is a bearing based on the working principle of cycloid pair, and its swing angle can reach 360 degrees. Its basic structure consists of inner ring, outer ring, intuitive guide rail and cycloid wheel. There is a set of cycloid wheels around the outer ring of the swing bearing, and there is an intuitive guide rail on the inner ring. Through this structure, under the action of the cycloid wheel, the inner and outer rings can swing. The working principle of the swing bearing is to use the mutual bearing effect of the inner and outer rings to transfer the load to the cycloid wheel, and then disperse the load to the entire inner ring through the intuitive guide rail. Under the action of the cycloid wheel, the inner and outer rings can swing over a large range, with good load-bearing capacity and swing performance.

[0023] 2. The reference numerals in the drawings of the specification include: housing 1, gun head 2, rocker arm 3, guide seat 4, nail feeding claw slider 5, large cylinder 5a, small cylinder 5b, return spring 6, support sleeve 7, nail box 8, transmission shaft 9, rocking bearing 10, connecting piece 11, nail feeding claw 12, firing pin 13, movable toothed disc 14, cylindrical pin 14a, nail stopping claw 15, front end surface of nail feeding claw 16, blocking surface 17, fastener 18, connecting wire 19.

[0024] The embodiment is basically as shown in the attached Figure 1-Figure 35 As shown: a rechargeable coil nail gun includes a housing 1, a gun head 2 and a nail box 8. The gun head 2 is provided with a shape track and a channel. The nail box 8 stores fasteners 18, and the fasteners 18 are sent into the shape track by nail feeding claws 12; multiple fasteners 18 in the nail box 8 are formed into coil nails by connecting wires 19, and the connecting wires 19 are arranged at a certain angle with the horizontal direction. In this embodiment, the angle between the connecting wires 19 and the horizontal direction is β, as shown in FIG. Fig.35 As shown. The gun head 2 is also provided with a guide seat 4 and a support sleeve 7. The support sleeve 7 is fixed to the gun head 2 by bolts. The gun head 2 is also provided with a pressing plate, and the pressing plate is connected with a nail-stopping claw 15.

[0025] It also includes a firing pin 13, a firing mechanism for firing the firing pin 13, and a lifting and releasing mechanism for lifting the firing pin 13. The firing mechanism includes a gas storage device for storing a certain pressure gas, a cylinder arranged in the gas storage device, a cylinder seat and a piston in the cylinder. The gun head 2 is connected to the cylinder seat. The firing pin 13 is fixed on the piston. The striking end of the firing pin 13 moves in the shape track of the gun head 2; the lifting and releasing mechanism includes a control system, a motor, a reduction gear box, a transmission shaft 9, and a rocking bearing 10 on the transmission shaft 9 and a movable gear plate 14 controlled by the transmission shaft 9. A plurality of cylindrical pins 14a are provided on the movable gear plate 14. The cylindrical pins 14a on the movable gear plate 14 correspond one-to-one to the protruding teeth on the firing pin 13. Specifically, an end plate is provided on the transmission shaft 9, and the movable toothed disc 14 is fixed to the end plate of the transmission shaft 9 by one of the cylindrical pins 14a. The movable toothed disc 14 can make appropriate swings in the arc hole formed by the movable toothed disc 14 with the cylindrical pin 14a as the center and the center of the transmission shaft 9 as the radius. When the movable toothed disc 14 is not subjected to a sufficiently large deflection force, the movable toothed disc 14 is always fixed at the initial angle by the reset spring 6.

[0026] In this embodiment, Fig.34 (a) and Fig.34 As shown in (b), the striker 13 includes a striking member and a moving member with teeth, and the teeth on the moving member correspond one to one with the cylindrical pin 14a on the movable toothed disc 14. The moving member is driven by the firing mechanism and the movable toothed disc 14, and the striking member and the moving member are detachably connected. Specifically, one end of the moving member connected to the striking member is provided with a mounting boss with a threaded hole, and one end of the striking member connected to the moving member is provided with a screw rod matched with the threaded hole. After the screw rod is threadedly connected to the mounting boss, the striking member and the moving member are installed to form an integral striker 13.

[0027] A nail feeding mechanism is also provided on the transmission shaft 9. After the transmission shaft 9 rotates, the nail feeding mechanism drives the nail feeding claw 12 to feed the fastener 18 in the nail box 8 into the channel of the gun head 2. When the firing pin 13 is in the firing position, the nail feeding mechanism drives the nail feeding claw 12 to completely feed the fastener 18 into the channel.

[0028] Specifically, the nail feeding mechanism includes a swing bearing 10 and a nail feeding claw slider 5 connected to a nail feeding claw 12. The swing bearing 10 is as shown in FIG. Figure 3 The farthest end of the rocking rod 3 of the rocking bearing 10 is provided with a connecting piece 11, as shown in FIG. Figure 5As shown, the nail-feeding claw slider 5 is provided with a slide groove whose length is greater than the connecting member 11. The connecting member 11 is located in the slide groove. In this embodiment, the connecting member 11 is a steel ball with a hole. During the rotation of the transmission shaft 9, the connecting member 11 on the rocking rod 3 of the rocking bearing 10 slides in the slide groove. When the connecting member 11 contacts the abutment wall at the rear end of the slide groove, it drives the nail-feeding claw slider 5 to move backward. After the connecting member 11 is out of contact with the abutment wall at the rear end, the reset spring 6 pushes the nail-feeding claw slider 5 to move forward and return to the starting position. Moreover, in this embodiment, the slide groove can provide the required clearance for the axial length change of the rocking rod 3 of the rocking bearing 10 during the displacement process. At the same time, it can also fix the nail-feeding claw slider 5 from rotating, thereby ensuring the normal sliding of the nail-feeding claw slider 5.

[0029] One end of the nail feeding claw slider 5 is a large cylinder 5a, which is located in the guide seat 4, and the other end is a small cylinder 5b, which is located in the support sleeve 7. The slide groove is located on the large cylinder and in the support sleeve 7. The small cylinder 5b is covered with a return spring 6, one end of the return spring 6 is against the end surface of the support sleeve 7, and the other end is against the end surface of the large cylinder 5a. Figure 4 shown.

[0030] The nail-feeding claw slide block 5 is provided with a protrusion, and the nail-feeding claw 12 is hinged with the protrusion. Specifically, the protrusion is installed with the nail-feeding claw 12 through a cylindrical pin 14a.

[0031] Preferably, a spline groove mark is provided on the rocking bearing 10, and a spline groove mark is provided on the transmission shaft 9. When the rocking bearing 10 is transferred to the transmission shaft 9 through the spline, the marked spline teeth and the marked spline grooves are assembled correspondingly to ensure that in the standby position, at least one cylindrical pin 14a on the movable toothed disc 14 is engaged with the corresponding teeth on the toothed moving part on the firing pin 13, and the front end face 16 of the nail feeding claw abuts against the blocking surface 17 of the inner shape trajectory of the gun head 2, and the reset spring 6 is in the original length state.

[0032] The specific implementation process is as follows: Figure 6-10 As shown, in the standby position, the striking piece of the firing pin 13 is at the upper end of the fastener 18, at least one cylindrical pin 14a on the movable toothed disc 14 is meshed with the corresponding teeth on the toothed moving piece on the firing pin 13, and the front end surface 16 of the nail feeding claw abuts against the blocking surface 17 of the inner shape track of the gun head 2. The return spring 6 of the small cylindrical body 5b of the nail feeding claw slider 5 is in the original length state and supports the nail feeding claw slider 5. Taking the farthest end of the swing rod 3 as the starting point, at this time, the connecting piece 11 on the swing rod 3 is at the rear end of the slide groove of the nail feeding claw slider 5 and is about to be out of contact with the rear end wall, and the last tooth of the movable toothed disc 14 is at any angle below the horizontal axis line of the movable toothed disc 14, as shown in FIG. Fig. 9As shown, the angle α between the last tooth of the movable toothed disc 14 and the horizontal axis of the movable toothed disc 14 is 17°. When in the standby position, the swing inclination angle of the rocking bearing 10 is not at the maximum forward inclination angle. The reason is that the rocking bearing 10 rotates along with the transmission shaft 9. When in the standby position, the firing pin 13 is still in the unfired position. The transmission shaft 9 needs to rotate a certain angle to make the firing pin 13 in the firing position. Within this rotation angle range, as the transmission shaft 9 rotates, the farthest end of the rocking rod 3 of the rocking bearing 10 will continue to swing in the groove of the nail feeding claw slider 5. However, since the connecting member 11 is about to disengage and contact the rear end wall of the groove at this time, the nail feeding claw slider 5 is stationary during the swinging movement of the connecting member 11, and the movement of the connecting member 11 belongs to the idle stroke. Fig.32 and Fig.33 As shown, the rocking inclination angle of the rocking bearing 10 is at the maximum forward inclination angle, and at this time, the travel L of the connecting member 11 is l1. Fig.32 l1=9.56mm, Fig.33 Medium γ=73.53°.

[0033] like Figure 11-15 As shown, when the firing pin 13 is in the firing position, the rotation of the transmission shaft 9 causes the last tooth of the movable toothed disc 14 to disengage from the last tooth on the moving part of the firing pin 13, and the firing pin 13 starts to fire the fastener 18. During the firing process, the rotation angle of the transmission shaft 9 is rotated and displaced by a certain angle from the last tooth of the movable toothed disc 14 at the previous position, and the connecting member 11 on the rocker arm 3 of the rocking bearing 10 moves a distance in the slide groove of the nail feeding claw slider 5. In this embodiment, taking the last tooth of the movable toothed disc 14 at the previous position as an example, the angle α between the last tooth of the movable toothed disc 14 and the horizontal axis of the movable toothed disc 14 is 17°, and it has moved at least 50°. After the movement, the angle α between the last tooth of the movable toothed disc 14 and the horizontal axis of the movable toothed disc 14 is 50.03°. Fig.15 As shown, α=50.03, the distance L that the connecting member 11 drives the slider to move in the slide groove is at least more than 8 mm. Fig.14 As shown, specifically, in this embodiment, L=8.2mm. In the above process, the nail-feeding claw slider 5 is still held by the return spring 6, so that the front end surface 16 of the nail-feeding claw is still against the shape track blocking surface 17 of the gun head 2, which can ensure the integrity of the running track of the fastener 18 during the nailing process, and make the next fastener 18 between the front and rear teeth of the nail-feeding claw 12 and between the nail-stopping claws 15 of the pressure plate, so as to prevent the next fastener 18 from entering the gun head 2, leaving a channel for the return of the striker 13.

[0034] like Figure 16-20As shown in FIG. 1 , after the firing pin 13 is fired, the striking member of the firing pin 13 is at the bottom, at which time the first tooth on the movable toothed disc 14 is in meshing with the first tooth on the movable member on the firing pin 13, and the movable toothed disc 14 continues to rotate a certain angle under the rotation of the transmission shaft 9. For example, the last tooth of the movable toothed disc 14 is at an angle of 17° with the horizontal axis of the movable toothed disc 14, and the angle is moved by at least 99°. Fig. 20 As shown, α=99.96°. In this process, the rocking bearing 10 passes the maximum forward tilt angle as the transmission shaft 9 rotates and begins to move toward the backward tilt angle, and the connecting piece 11 at the farthest end of the rocking rod 3 of the rocking bearing 10 is still in the idle stroke position. Until the transmission shaft 9 continues to rotate, the lifting release mechanism lifts the striker 13 upward, the piston moves upward and compresses the gas stored in the gas storage device, and the rocking bearing 10 starts to move toward the backward tilt angle driven by the rotation of the transmission shaft 9, and at the same time, the connecting piece 11 at the farthest end of the rocking rod 3 of the rocking bearing 10 starts to move in the opposite direction toward the rear of the idle stroke, as shown in FIG. Fig.19 As shown, the rocking bearing 10 drives the connecting piece 11 at the farthest end of the rocker arm 3 to move forward an idle stroke of 1.9 mm and then move backward an idle stroke of 0.9 mm, that is, starting from the standby state, the connecting piece 11 moves forward an idle stroke of 10.1 mm and then moves backward an idle stroke of 0.9 mm, so L=9.2 mm.

[0035] like Figure 21-25 As shown, as the transmission shaft 9 continues to rotate, the last tooth of the movable tooth continues to rotate a certain angle. For example, the last tooth of the movable toothed disc 14 has an angle of 17° between the last tooth of the movable toothed disc 14 and the horizontal axis of the movable toothed disc 14, and moves at least 245°. Fig.25 As shown, α=247.96°. During this process, the striker 13 moves upward from the bottom under the drive of the movable toothed disc 14, and the rocking bearing 10 continues to move toward the rearward tilt angle under the rotation of the transmission shaft 9. The connector 11 at the farthest end of the rocker arm 3 of the rocking bearing 10 moves to the rear end of the slide groove and abuts against the wall, so that the nail feeding claw slider 5 presses the reset spring 6 and moves toward the support sleeve 7, until the nail feeding claw 12 grabs the next fastener 18 and the rocking bearing 10 starts to move in the forward tilt angle direction. During this process, the rolled nails in the nail box 8 are fixed in the channel on the inner surface of the nail stopping claw 15 and the nail feeding track of the nail feeding claw 12 during the backward movement of the nail feeding claw 12. As shown in FIG. Fig.24 As shown, the rocking bearing 10 drives the connecting piece 11 at the farthest end of the rocker arm 3 to move forward an idle stroke of 9.22 mm and then drives the nail feeding claw 12 to move backward 12.6 mm, that is, starting from the standby state, the connecting piece 11 moves backward 12.6 mm, so L=12.6 mm.

[0036] like Figure 26-31As shown, as the transmission shaft 9 continues to rotate, the movable toothed disc 14 and the rocking bearing 10 continue to rotate, and the last tooth of the movable toothed disc 14 continues to rotate through a certain angle. For example, the last tooth of the movable toothed disc 14 at the previous position is an angle of 17° between the last tooth of the movable toothed disc 14 and the horizontal axis of the movable toothed disc 14, and the movement is at least 330°. Fig.34 and Fig.30 As shown, α=330°. The striking piece of the striker 13 is just higher than the upper top surface of the fastener 18. At this time, the rocking bearing 10 moves to the maximum forward tilt angle, and the connecting piece 11 contacts the bottom of the nail feeding claw slider 5 and moves forward for a distance, as shown in FIG. Fig.31 As shown, L=6.5mm, in this state, the front end surface 16 of the nail feeding claw is a certain distance away from the blocking surface 17 of the shape track of the gun head 2, the transmission shaft 9 has not yet rotated to the initial position of the standby, and the firing pin 13 has not reached the firing position. In the above-mentioned whole process, the movement of the fastener 18 is sent to the shape track of the gun head 2 only after the striking piece of the firing pin 13 leaves the top of the fastener 18 and the nail feeding claw 12 continues to move, so the rise of the firing pin 13 will not be interfered by the fastener 18 during the nail feeding process of the nail feeding claw 12.

[0037] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A rechargeable coil nail gun, comprising a shell, a gun head and a nail box are arranged on the shell, and also comprises a firing pin, a firing mechanism for firing the firing pin and a lifting and releasing mechanism for lifting the firing pin, wherein the firing mechanism comprises a gas storage device for storing a certain pressure gas, a cylinder arranged in the gas storage device, a cylinder seat and a piston in the cylinder, the gun head is connected to the cylinder seat, the firing pin is fixed on the piston, and the striking end of the firing pin moves in the shape track of the gun head; the lifting and releasing mechanism comprises a control system, a motor, a reduction box, a transmission shaft, and a rocking bearing and a movable toothed disc on the transmission shaft, wherein a plurality of cylindrical pins are arranged on the movable toothed disc, and the cylindrical pins correspond one to one with the protruding teeth on the firing pin; fasteners are stored in the nail box, and the fasteners are sent into the shape track by nail feeding claws; Features: A nail feeding mechanism including a rocking bearing is provided on the transmission shaft. The rotation of the transmission shaft drives the nail feeding mechanism through the rocking bearing to drive the nail feeding claw to feed the fasteners in the nail box into the channel of the gun head. When the firing pin is in the firing position, the nail feeding mechanism drives the nail feeding claw to completely feed the fasteners into the channel.

2. The rechargeable nail gun according to claim 1, characterized in that: The nail feeding mechanism also includes a nail feeding claw slider connected to the nail feeding claw, a connecting piece is provided at the farthest end of the rocker arm of the rocking bearing, a sliding groove with a length greater than that of the connecting piece is provided on the nail feeding claw slider, and the connecting piece is located in the sliding groove.

3. The rechargeable nail gun according to claim 2, characterized in that: A guide seat and a support sleeve are arranged on the gun head, one end of the nail feeding claw sliding block is located in the guide seat, and the other end is located in the support sleeve.

4. The rechargeable nail gun according to claim 3, characterized in that: One end of the nail feeding claw slider is a large cylinder, and the other end is a small cylinder. The sliding groove is located on the large cylinder, and the small cylinder is covered with a return spring.

5. The rechargeable nail gun according to claim 4, characterized in that: One end of the return spring abuts against the end surface of the support sleeve, and the other end abuts against the end surface of the large cylinder.

6. The rechargeable nail gun according to claim 5, characterized in that: The connecting piece is a steel ball with a hole.

7. The rechargeable nail gun according to any one of claims 2 to 6, characterized in that: The nail feeding claw sliding block is provided with a protrusion, and the nail feeding claw is hinged to the protrusion.

8. The rechargeable nail gun according to claim 7, characterized in that: The striker comprises a striking piece and a moving piece with teeth, the moving piece is driven by the firing mechanism and the movable toothed disc, and the striking piece is detachably connected to the moving piece.

9. The rechargeable nail gun according to any one of claims 1 to 8, characterized in that: An end plate is provided on the transmission shaft, and the movable toothed disc is fixed to the end plate by a cylindrical pin therein. The movable toothed disc can swing appropriately in the arc hole formed by the movable toothed disc with the cylindrical pin as the center and the transmission axis as the radius.

10. The rechargeable nail gun according to claim 9, characterized in that: The rocking bearing is connected and fixed on the transmission shaft through a spline.

11. The rechargeable nail gun according to claim 10, characterized in that: The rocking bearing is provided with a spline tooth mark, and the transmission shaft is provided with a spline groove mark corresponding to the spline tooth mark.

12. The rechargeable nail gun according to claim 11, characterized in that: During the rotation of the transmission shaft, when the striking member is at the upper end of the fastener, at least one cylindrical pin on the movable toothed disk meshes with the corresponding tooth on the moving member, and the connecting member moves within the idle stroke of the slide groove, and the front end surface of the nail-delivering claw abuts against the blocking surface of the shape track of the gun head: when the firing pin is in the firing position, the connecting member moves within the idle stroke of the slide groove, and the front end surface of the nail-delivering claw abuts against the blocking surface of the shape track of the gun head; after the firing pin is fired, the striking member is at the lower end, and the rocking bearing passes the maximum value of the forward inclination angle with the rotation of the transmission shaft and begins to move toward the backward inclination angle, and the connecting member is in the idle stroke position; the firing pin begins to move upward and the piston compresses the gas in the gas storage device, and the rocking bearing is on the transmission shaft When the striking member of the firing pin is just higher than the upper surface of the fastener, the rocking bearing continues to move in the direction of the maximum forward tilt angle under the rotation of the transmission shaft, and the connecting member is driven by the rocker arm to move toward the support sleeve until it contacts the nail-feeding claw slider, causing the nail-feeding claw slider to press the reset spring and move toward the support sleeve together, until the nail-feeding claw grabs the next fastener and the rocking bearing begins to move in the direction of the forward tilt angle: when the striking member of the firing pin is just higher than the upper surface of the fastener, the rocking bearing continues to move in the direction of the maximum forward tilt angle under the rotation of the transmission shaft, and the connecting member contacts the wall at the rear end of the nail-feeding claw slider, and the front end surface of the nail-feeding claw is still a certain distance away from the shape track blocking surface of the gun head.

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