A nail pushing structure of a nail gun

Abstract

The utility model provides a kind of nail pushing structure of nailer, belong to the technical field of nailer.It solves how to make the nail pushing structure and nail control process of nailer more simple.A kind of nail pushing structure of nailer, nailer further include nail outlet part, be equipped with nail channel on nail outlet part, striker can move in nail channelPushing structure includes the nail pushing piece for moving nail up and driving rod, cam is connected on transmission mechanism, cam is contacted with the one end of driving rod and drives driving rod along straight line movement, the other end on driving rod is equipped with reversing block, driving rod and reversing block can drive nail pushing piece reciprocatingly moves up and down, nail pushing piece sequentially pushes nail into nail channel.The scheme in this, the structure of guide slope and guide wheel can convert the movement of driving rod along horizontal straight line into the vertical movement of slider, since driving rod is along straight line movement, can coaxially set cam into transmission mechanism, so that nail pushing structure is more simple and stable.

Description

Technical Field

[0001] This utility model belongs to the technical field of nail guns and relates to a nail-pushing structure for a nail gun. Background Technology

[0002] A nail gun is used to drive nails (such as flathead nails, U-shaped nails, etc.) into a workpiece. A nail gun generally consists of a cylinder and a piston forming an energy storage mechanism. A nail ejection section is located at the front of the nail holder; below the ejection section is a nail magazine, and a nail pusher pushes the nails from the magazine into the ejection section. The nail gun also includes a lifting mechanism that drives the piston to compress gas within the cylinder to store energy. The piston is connected to a firing pin, and the lifting mechanism contains a rotating disk that meshes with the firing pin. The rotating disk is connected to a motor. When the motor is started, the rotating disk drives the firing pin to move. The piston compresses the gas within the cylinder, and after the firing pin reaches the nailing position, it is suddenly released, striking the row of nails in the nail magazine that have been pushed into the nail holder by the nail pusher, ejecting them from the ejection section.

[0003] To increase nail capacity, nails wound into coils are usually stored in a nail canister. When using a nail canister, the problem arises of how to stably deliver the coiled nails to the nailing channel.

[0004] In the existing technology, there are nail feeding mechanisms with their own independent motors or electromagnetic actuators to drive the nail feeding claws. This structure is not only not conducive to reducing the cost of nail guns, but also complicates the nail feeding structure and the nail feeding control process. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a nail-pushing structure for a nail gun. The technical problem to be solved by this utility model is: how to make the nail-pushing structure and nail-loading control process of the nail gun simpler.

[0006] The objective of this utility model can be achieved through the following technical solution: a nail-pushing structure for a nail gun, the nail gun including a firing pin and a motor for lifting the firing pin, the motor transmitting power through a transmission mechanism, the nail gun also including a nail ejection part, the nail ejection part having a nail-driving channel, the firing pin being able to move within the nail-driving channel, a can-type nail magazine connected to the nail ejection part, the nail-pushing structure including a nail-pushing component for moving the nail upwards and a drive rod, characterized in that a cam is connected to the transmission mechanism, the cam contacting one end of the drive rod and driving the drive rod to move along a straight line, a reversing block being provided at the other end of the drive rod, the drive rod and the reversing block moving can drive the nail-pushing component to move up and down reciprocally when moving, the nail-pushing component pushing the nails sequentially into the nail-driving channel.

[0007] In this design, the motor, through a transmission mechanism, drives the cam to rotate during the lifting of the firing pin. The cam's rotation causes the drive rod to reciprocate along a straight line. The drive rod, via a reversing block, moves the nail pusher up and down, thus pushing the nails sequentially into the nailing channel. The direct connection between the cam and the transmission mechanism eliminates the need for a separate motor in the nail-pushing structure, reducing the cost of the nail gun and simplifying the nail-pushing mechanism and the nail-loading control process.

[0008] In the aforementioned nail-pushing structure of a nail gun, the reversing block is provided with a guide ramp, the nail pusher is connected to a slider, and the slider is provided with a guide wheel. When the reversing block moves along a straight line, the guide ramp can contact the guide wheel, causing the slider to move downward. The structure of the guide ramp and guide wheel converts the horizontal linear motion of the drive rod into the vertical motion of the slider. Since the drive rod moves along a straight line, the cam can be coaxially integrated into the transmission mechanism, making the nail-pushing structure simpler and more stable.

[0009] In the aforementioned nail-pushing structure of a nail gun, a mounting housing is fixedly connected to the nail-dispensing part. The mounting housing contains a sliding groove, and the drive rod is located within the sliding groove. The mounting housing also has a through slot communicating with the sliding groove, and the reversing block passes through the through slot and is located outside the mounting housing. The sliding groove limits the movement of the drive rod, and the through slot limits the movement of the reversing block, making the movement of the drive rod and the reversing block more stable.

[0010] In the aforementioned nail-pushing structure of a nail gun, a guide groove is provided inside the drive rod, and a guide rod is also connected to the drive rod. The guide rod is inserted into the guide groove, and a spring is also provided inside the guide groove. One end of the guide rod abuts against the spring, and the other end of the guide rod abuts against the mounting housing. The guide rod and the spring are used to move the drive rod towards the cam. The guide rod, the spring, and the cam cause the drive rod to reciprocate along a straight line. The guide groove and the guide rod make the movement of the drive rod more stable.

[0011] In the aforementioned nail-pushing structure of a nail gun, the mounting housing is disposed on one side of the nail-pushing component, and a cover plate is also provided on the mounting housing.

[0012] In the aforementioned nail-pushing structure of a nail gun, the nail gun further includes a mounting base. The nail ejection part is fixedly connected to the mounting base. The transmission structure is mounted on the mounting base. The transmission mechanism includes a rotating shaft, and a cam is mounted on the rotating shaft and rotates with it. The drive rod passes through the side wall of the mounting base and can contact the cam. The cam is directly mounted on the rotating shaft, eliminating the need for a separate structure to transmit power from the transmission mechanism to the cam, making the nail-pushing structure simpler and more stable.

[0013] In the aforementioned nail-pushing structure of a nail gun, the nail gun further includes a rotating disk for lifting the firing pin. The firing pin and the rotating disk are engaged or disengaged via a clutch mechanism. The clutch mechanism includes a disengagement element fixed on a mounting base. The drive rod passes through the disengagement element and can contact a cam. The disengagement element also limits the movement of the drive rod, making its operation more stable.

[0014] In the aforementioned nail-pushing structure of a nail gun, the nail-dispensing part is provided with a sliding groove, the slider slides in the sliding groove, the slider is also provided with a narrow slot, the nail-dispensing part is provided with a limiting block, the limiting block is located at the bottom of the sliding groove and extends towards the nail-driving channel, and the limiting block is located in the narrow slot.

[0015] In the aforementioned nail-pushing structure of a nail gun, the nail-pushing component is rotatably connected to the slider, and an elastic element is provided between the nail-pushing component and the slider.

[0016] In the aforementioned nail-pushing structure of a nail gun, the can-type nail magazine is provided with a top groove, the slider is provided with a limit groove, a second spring and a push rod are placed in the limit groove, one end of the push rod abuts against the second spring, and the other end of the push rod abuts against the top groove.

[0017] Compared with the prior art, the present invention has the following advantages: 1. In this solution, the structure of the guide ramp and guide wheel can convert the horizontal linear motion of the drive rod into the vertical motion of the slider. Since the drive rod moves along a straight line, the cam can be coaxially set in the transmission mechanism, making the push pin structure simpler and more stable. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the striker driving assembly of this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the present invention; Figure 6 This is an exploded view of the push-pin structure of this utility model; Figure 7 This is an exploded view of the push-pin structure of this utility model; Figure 8 This is a cross-sectional structural schematic diagram of the present invention; Figure 9 This is a cross-sectional structural schematic diagram of the present invention; Figure 10 This is a cross-sectional structural schematic diagram of the present invention; Figure 11 This is a cross-sectional structural schematic diagram of the present invention; Figure 12 This is a three-dimensional structural schematic diagram of the present invention; Figure 13 This is a cross-sectional structural schematic diagram of the present invention; Figure 14 This is a cross-sectional structural schematic diagram of the present invention; In the diagram, 1. Drive rod; 2. Reversing block; 2a. Guide ramp; 3. Cam; 4. Push pin component; 4a. Push pin groove; 5. Slider; 5a. Narrow slot; 5b. Limiting groove; 6. Guide wheel; 7. Mounting housing; 7a. Slide groove; 8. Guide rod; 9. Guide groove; 10. Spring 1; 11. Pin ejection part; 11a. Limiting block; 12. Sliding groove; 13. Elastic element; 14. Push rod; 15. Spring 2; 16. 17. Can-type nail box; 18. Top groove; 19. Stop; 10. Stop block; 21. Spring three; 22. Cylinder; 23. Piston; 24. Strike pin; 25. Rotary disc; 26. Ratchet; 27. Mounting base; 28. Rotating shaft; 29. ​​Connecting base; 20. Pawl; 21. Head end; 22. Tail end; 22. Disengagement element; 33. Return spring; 34. Nail. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figures 1-4 As shown, this embodiment discloses a nail gun, which includes a cylinder 20, a piston 21 slidably disposed within the cylinder 20, and a firing pin 22 fixedly connected to the piston 21. The cylinder 20 and piston 21 form a sealed compression chamber inside the cylinder 20 for storing and releasing compressed air to drive the movement of the piston 21. The firing pin 22 is fixedly connected to the piston 21, ensuring that under the action of high-pressure gas on the piston 21, the firing pin 22 moves synchronously with the piston 21, striking the nail 31 to achieve the nailing function. Several protrusions 22a are arranged in an array along the axial direction of the firing pin 22. These protrusions 22a are used to cooperate with the locking pins 24 on the rotating disk 23 to realize the movement of the piston 21 within the cylinder 20 and compress the gas within the cylinder 20.

[0021] like Figure 3 and Figure 4The nail gun shown also includes a transmission mechanism, which is mounted on the mounting base 25. The transmission mechanism includes the aforementioned rotating disk 23, which is rotatably mounted on the rotating shaft 26. The rotating disk 23 has several circumferentially arranged locking pins 24 that engage with protrusions 22a to lift the firing pin 22. The shape of each locking pin 24 matches the protrusion 22a on the firing pin 22, ensuring a tight and effective engagement, thereby converting the rotational motion of the rotating shaft 26 into the linear motion of the piston 21 and the firing pin 22. A connecting seat 27 is fixedly connected to the rotating shaft 26, and pawls 28 arranged centrally symmetrically are hinged to both ends of the connecting seat 27. The rotating disk 23 also has ratchet wheels 23a that engage with the pawls 28. The mounting base 25 is provided with disengagement elements 29 corresponding to the two pawls 28. The pawls 28 have a head end 28a that can engage with the tooth surface of the ratchet 23a and a tail end 28b that can form an abutment engagement with the disengagement elements 29. The tail ends 28b on the two pawls 28 are vertically offset so that they can only engage with their corresponding disengagement elements 29 during rotation. When it is necessary to disengage the pawls 28 and the ratchet 23a, the corresponding disengagement element 29 contacts the tail end 28b of the pawl 28, forcing the head end 28a of the pawl 28 to lift off the tooth surface of the ratchet 23a, thereby disengaging the engagement.

[0022] To ensure that the pawl 28 always fits tightly against the tooth surface of the ratchet 23a and can quickly return to its original position even after being subjected to external force, a return spring 30 is installed on the connecting seat 27. When the pawl 28 is not subjected to external force, the return spring 30 can restore its original state, thereby forcing the pawl 28 back to the position of engaging with the ratchet 23a.

[0023] like Figure 5 Combination Figure 3 and Figure 8 As shown, the pusher structure includes a pusher 4 for moving the nail 31 upwards and a drive rod 1. A cam 3 is connected to the rotating shaft 26. The cam 3 is connected to one end of the drive rod 1 and drives the drive rod 1 to move along a straight line. A reversing block 2 is provided on the other end of the drive rod 1. When the drive rod 1 and the reversing block 2 move, they can drive the slider 5 and the pusher 4 to move up and down along the inclined line A. The pusher 4 pushes the nail 31 into the nailing channel in sequence. The reversing block 2 is provided with a guide inclined surface 2a. The pusher 4 is connected to the slider 5. The slider 5 is provided with a guide wheel 6. When the reversing block 2 moves along a straight line in the nailing direction, the guide inclined surface 2a can contact the guide wheel 6, driving the slider 5 to move downwards. The nail outlet 11 and the mounting base 25 are fixedly connected. The cam 3 is set on the rotating shaft 26 and rotates with the rotating shaft 26. The drive rod 1 passes through the side wall of the mounting base 25 and can contact the cam 3. In this embodiment, the drive rod 1 passes through the release element 29 and contacts the cam 3.

[0024] like Figure 5 Combination Figure 6As shown, a mounting housing 7 is fixedly connected to the nail protrusion part 11. The mounting housing 7 has a sliding groove 7a inside, and the drive rod 1 is located inside the sliding groove 7a. The mounting housing 7 also has a through groove communicating with the sliding groove 7a. The reversing block 2 passes through the through groove and is located outside the mounting housing 7.

[0025] like Figure 8 Combination Figure 6 , Figure 7 and Figure 9 As shown, a guide groove 9 is provided inside the drive rod 1, and a guide rod 8 is also connected to the drive rod 1. The guide rod 8 is inserted into the guide groove 9, and a spring 10 is also provided inside the guide groove 9. One end of the guide rod 8 abuts against the spring 10, and the other end of the guide rod 8 abuts against the mounting housing 7. The mounting housing 7 is located on one side of the pusher 4, and a cover plate is also provided on the mounting housing 7. A sliding groove 12 is provided on the nail ejector part 11, and the slider 5 slides in the sliding groove 12. A slot 5a is also provided on the slider 5. A limiting block 11a is provided on the nail ejector part 11. The limiting block 11a is located at the bottom of the sliding groove 12 and extends towards the nail driving channel. The limiting block 11a is located in the slot 5a. The pusher 4 is rotatably connected to the slider 5. An elastic element 13 is provided between the pusher 4 and the slider 5. In this embodiment, the elastic element is a torsion spring. The can-type nail box 16 is provided with a top groove 17, and the slider 5 is provided with a limit groove 5b. A second spring 15 and a top rod 14 are placed in the limit groove 5b. One end of the top rod 14 abuts against the second spring 15, and the other end of the top rod 14 abuts against the top groove 17.

[0026] like Figures 11-14 As shown, the stop 18 is rotatably connected to one side of the nail ejector 11. The stop 18 includes a stop block 18a that contacts the nail 31. Spring 3 19 biases the corresponding stop 18 toward the nail 31 to maintain contact between the stop block 18a and the nail 31 as the nail 31 is advanced toward the nail ejector 11. In operation, as the nail pusher 4 retracts in a downward direction, the stop block 18a of the stop 18 remains engaged with one of the arranged nails 31a, while the nail pusher 4 pivots around the same nail 31a. After the nail in the nailing channel is ejected, the nail pusher 4 rotates toward the side away from the nail 31a and moves below the nail 31a. At this time, the nail pusher 4 rotates toward the side of the nail 31 under the action of spring 2 15, and the nail 31 is located in the nail pusher groove 4a of the nail pusher 4. When the pusher 4 moves the nail 31a into the nailing channel, the stop 18 is biased away from the nail 31 to allow the prepared nail to advance, and then the spring that is biased against the corresponding stop 18 returns, thereby positioning the stop 18 between the next two nails 31 in the sequence to prevent the prepared nail 31 from moving toward the canister nail box 16.

[0027] Before the piston 21 reaches the bottom dead center position in the cylinder 20, the firing pin 22 strikes the nail 31 in the nailing channel. During this time, the lifting mechanism continues to rotate so that the piston 21 and the firing pin 22 return from the bottom dead center position in the cylinder 20 to the ready position after nailing. Simultaneously, the rotating shaft 26 rotates the cam 3, which causes the drive rod 1 to move in a straight line. As the drive rod 1 moves in the nailing direction, the reversing block 2 pushes the guide wheel 6 on the slider 5 to convert the lateral linear motion of the drive rod 1 into the up-and-down motion of the slider 5 in the tilting direction. As the slider 5 slides down, the nail pusher 4 rotates to remove the next nail 31. At this time, the stop 18 remains engaged with one of the nails 31, and when the slider 5 is at its furthest position from the nailing channel, the elastic member 13 presses the nail pusher 4 under the next nail 31. Then, with the continued rotation of cam 3, drive rod 1 moves backward under the action of spring 10, slider 5 moves towards the nailing channel under the action of spring 15, and pusher 4 moves with slider 5, thus pushing the prepared nails 31 into the nailing channel, and pushing one of the nails 31 into the nailing channel. In this way, drive rod 1 moves in a straight line, and pusher 4 completes a full reloading cycle of one of the prepared nails 31 into the nailing channel.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as 1. drive rod; 2. reversing block; 3. cam; 4. push pin; 5. slider; and 6. guide wheel, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A nail-pushing structure for a nail gun, the nail gun comprising a firing pin and a motor for lifting the firing pin, the motor transmitting power through a transmission mechanism, the nail gun further comprising a nail-ejecting part having a nail-driving channel on the nail-ejecting part, the firing pin being movable within the nail-driving channel, a can-type nail magazine connected to the nail-ejecting part, the nail-pushing structure comprising a nail-pushing component for moving the nail upwards and a drive rod, characterized in that... The transmission mechanism is connected to a cam, which contacts one end of the drive rod and drives the drive rod to move in a straight line. The other end of the drive rod is provided with a reversing block. When the drive rod and the reversing block move, they can drive the nail pusher to move up and down reciprocally. The nail pusher pushes the nails into the nailing channel in sequence.

2. The nail-pushing structure of a nail gun according to claim 1, characterized in that, The reversing block is provided with a guide slope, the push pin is connected to a slider, and the slider is provided with a guide wheel. When the reversing block moves along a straight line, the guide slope can contact the guide wheel, causing the slider to move downward.

3. The nail-pushing structure of a nail gun according to claim 2, characterized in that, A mounting housing is fixedly connected to the protruding part. The mounting housing has a sliding groove inside, and the drive rod is located inside the sliding groove. The mounting housing also has a through groove communicating with the sliding groove, and the reversing block part passes through the through groove and is located outside the mounting housing.

4. The nail-pushing structure of a nail gun according to claim 3, characterized in that, The drive rod is provided with a guide groove, and a guide rod is also connected to the drive rod. The guide rod is inserted into the guide groove, and a spring is also provided in the guide groove. One end of the guide rod abuts against the spring, and the other end of the guide rod abuts against the mounting housing.

5. The nail-pushing structure of a nail gun according to claim 4, characterized in that, The mounting housing is located on one side of the push pin component, and a cover plate is also provided on the mounting housing.

6. The nail-pushing structure of a nail gun according to claim 4, characterized in that, The nail gun also includes a mounting base, the nail ejection part is fixedly connected to the mounting base, the transmission structure is set on the mounting base, the transmission mechanism includes a rotating shaft, the cam is set on the rotating shaft and rotates with the rotating shaft, and the drive rod passes through the side wall of the mounting base and can contact the cam.

7. The nail-pushing structure of a nail gun according to claim 5, characterized in that, The nail gun also includes a rotating disk for lifting the firing pin. The firing pin and the rotating disk are engaged or disengaged by a clutch mechanism. The clutch mechanism includes a disengagement element fixed on the mounting base. The drive rod passes through the disengagement element and can contact a cam.

8. The nail-pushing structure of a nail gun according to claim 7, characterized in that, The nail ejection part is provided with a sliding groove, the slider slides in the sliding groove, the slider is also provided with a narrow groove, the nail ejection part is provided with a limiting block, the limiting block is located at the bottom of the sliding groove and extends towards the nail driving channel, and the limiting block is located in the narrow groove.

9. The nail-pushing structure of a nail gun according to claim 8, characterized in that, The pusher is rotatably connected to the slider, and an elastic element is provided between the pusher and the slider.

10. The nail-pushing structure of a nail gun according to claim 7, characterized in that, The can-shaped nail box is provided with a top groove, and the slider is provided with a limit groove. A second spring and a top rod are placed in the limit groove. One end of the top rod abuts against the second spring, and the other end of the top rod abuts against the top groove.

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