Nail gun with pusher rod guide function

Abstract

The utility model relates to a kind of nail gun with push rod guiding function, including gun body, driving device, speed reducer, swing arm, push rod, clamping component and guiding device, the driving device, speed reducer and clamping component are set on gun body, the push rod is in sliding mode and is set in gun body, the front end of push rod connects clamping component;The swing arm is in movable mode and is set on gun body, the input end of speed reducer connects the output end of driving device, the output end of speed reducer connects swing arm one end, and the other end of swing arm connects push rod;The guiding device includes slide rail and sliding block, the slide rail is set on gun body, the sliding block is in sliding mode and sits on slide rail, and the sliding block is connected with push rod;Sliding block cooperates with slide rail, push rod connects sliding block, so that push rod always moves along fixed path in reciprocating sliding process, effectively avoid offset or jitter due to inertia or structural clearance, guarantee the stability and accuracy of clamping action.

Description

Technical Field

[0001] This utility model relates to a nail gun with a push rod guiding function. Background Technology

[0002] In existing technologies, nail guns are widely used in automated operations such as assembly and packaging. Their core structure typically includes an electric drive assembly, a reduction gear, a swing arm mechanism, a push rod, and clamping components. To ensure stable horizontal movement of the push rod, traditional designs often use a through-type sliding channel within the gun body for guidance. The push rod is relatively long, with one end connected to the swing arm and the other end passing through the sliding channel to prevent deviation. While this method achieves stable sliding of the push rod, the structural limitations of the sliding channel require the push rod itself to be sufficiently long, resulting in a lengthy overall structure, low space utilization efficiency, and hindering equipment miniaturization. Furthermore, the sliding channel requires high precision, leading to high manufacturing costs, and long-distance push rod movement is prone to frictional wear and response lag, affecting the overall performance of the equipment. Utility Model Content

[0003] The purpose of this invention is to provide a nail gun with a push rod guiding function, in which the slider is connected to the push rod and moves along the guide rail, thereby ensuring that the push rod slides smoothly without deviating and significantly shortening the length of the push rod body.

[0004] The purpose of this utility model is achieved as follows:

[0005] A nail gun with a push rod guide function includes a gun body, a drive device, a reduction device, a swing arm, a push rod, a clamping component, and a guide device. The drive device, the reduction device, and the clamping component are disposed on the gun body. The push rod is slidably disposed inside the gun body, and the front end of the push rod is connected to the clamping component.

[0006] The swing arm is movably mounted on the gun body. The input end of the deceleration device is connected to the output end of the drive device, and the output end of the deceleration device is connected to one end of the swing arm. The other end of the swing arm is connected to the push rod.

[0007] The guiding device includes a slide rail and a slider. The slide rail is mounted on the gun body, and the slider sits on the slide rail in a sliding manner. The slider is connected to a push rod.

[0008] The drive device is decelerated by the reduction device and drives the swing arm to rotate. The swing arm pushes the push rod to slide back and forth along the length of the slide rail, so that the push rod drives the clamping component to open or close.

[0009] The slider works in conjunction with the slide rail, and the push rod connects to the slider, so that the push rod always moves along a fixed path during the reciprocating sliding process, effectively avoiding deviation or jitter caused by inertia or structural gaps, and ensuring the stability and accuracy of the clamping action.

[0010] Compared with traditional structures that require extended push rods to ensure guidance, this design achieves stable guidance through a slider, eliminating the need for excessively long push rods and enabling high-precision linear motion. This effectively shortens the overall length of the machine, making the nail gun structure more compact and easier to integrate and carry.

[0011] The traditional sliding channel structure is eliminated, eliminating the need for long guide grooves on the gun body. This simplifies the parts structure and overall processing technology, reduces manufacturing costs, and makes assembly more efficient and convenient.

[0012] The slider moves with low friction and smooth guidance in the slide rail, which can reduce mechanical failures caused by structural jamming or wear, and help improve the stability and service life of the equipment.

[0013] The objective of this utility model can also be achieved by the following technical measures:

[0014] Furthermore, the push rod is provided with a guide block, the guide block has a guide groove, and the guide block is connected to the slider;

[0015] The swing arm is provided with a sliding part, which extends into the guide groove;

[0016] The rotation of the swing arm causes the sliding part to slide in the guide groove and pushes the guide block to slide along the length of the slide rail, thereby limiting the sliding direction of the push rod.

[0017] By setting a guide block on the push rod and opening a guide groove on the guide block, combined with the slider and slide rail, and the structural design of the swing arm sliding part inserting into the guide groove, the rotational motion of the swing arm can be effectively converted into the linear sliding of the push rod, thereby achieving stable reciprocating drive.

[0018] The sliding of the sliding part within the guide groove prevents the application of nonlinear force to the push rod during the swing arm movement, avoiding push rod deflection or jamming, and improving the reliability and accuracy of the nail gun's nail clamping action.

[0019] Furthermore, the guide groove is a vertical guide groove, and the direction of the guide groove is perpendicular to the moving direction of the push rod.

[0020] By designing the guide groove as a vertical structure, with its direction perpendicular to the horizontal movement direction of the push rod, the sliding part can accurately limit the trajectory of the swing arm movement by sliding up and down in the guide groove.

[0021] This vertical guidance method effectively restricts the degree of freedom of the sliding part, avoids distortion of the push rod action due to lateral swing, and ensures that the push rod always slides smoothly back and forth along the slide rail direction, thereby improving the stability and consistency of the entire mechanism.

[0022] Meanwhile, the vertical guide structure is simple, occupies little space, and is easy to arrange inside the gun body, which helps to make the nail gun smaller and lighter overall.

[0023] The beneficial effects of this utility model are as follows:

[0024] This invention achieves stable guidance through a slider, eliminating the need for an excessively long push rod, and enables high-precision linear motion. This effectively shortens the overall length of the machine, making the nail gun structure more compact and easier to integrate and carry.

[0025] This invention, by setting a guide block on the push rod and opening a guide groove on the guide block, combined with the slider and slide rail, and the structural design of the swing arm sliding part inserting into the guide groove, can effectively convert the rotational motion of the swing arm into the linear sliding of the push rod, thereby achieving stable reciprocating drive. Attached Figure Description

[0026] Figure 1 This is a diagram of a nail gun.

[0027] Figure 2 This is a top view of a nail gun.

[0028] Figure 3 This is a schematic diagram of a nail gun (the push rod extends forward, the clamping component is in the clamping state, and the second spring is compressed).

[0029] Figure 4 This is a 3D view of a nail gun (the push rod extends forward, the clamping component is in the clamping state, and the second spring is compressed).

[0030] Figure 5 This is a schematic diagram of a nail gun (the push rod retracts backward, the clamping component opens, and the second spring returns to its original position).

[0031] Figure 6 This is a 3D view of a nail gun (the push rod extends forward, the clamping component is in the clamped state, and the second spring is compressed).

[0032] Figure 7 This is a schematic diagram of the swing arm (the second spring is compressed).

[0033] Figure 8 This is a schematic diagram of the swing arm (with the second spring resetting).

[0034] Figure 9 A perspective view (excluding the housing) showing the connection of the drive unit, worm gear, and reduction gear.

[0035] Figure 10 A schematic diagram showing the connection of the drive unit, worm gear, and reduction gear (excluding the housing).

[0036] Figure 11 This is a cross-sectional view of the speed reduction device.

[0037] Figure 12 This is an exploded view of the drive unit, worm gear, and reduction gear.

[0038] Figure 13 for Figure 3 AA sectional view.

[0039] Figure 14 This is a schematic diagram illustrating how the rotation of the adjusting screw causes the lower and upper clutches to disengage.

[0040] Figure 15 This is a schematic diagram showing the separation of the upper and lower clutches.

[0041] Figure 16 A schematic diagram showing the connection between the lower and upper clutches, which is used to adjust the rotation of the screw and the reset of the first spring.

[0042] Figure 17 This is a schematic diagram showing the connection between the upper and lower clutches.

[0043] Figure 18 This is a diagram of a nail gun (with part of the gun body removed).

[0044] Figure 19 This is a schematic diagram showing the connection between the slider and the slide rail.

[0045] Figure 20 This is a schematic diagram showing the connection between the push rod, guide block, slider, and slide rail. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0047] Implementation examples, in conjunction with Figures 1 to 20 As shown, a nail gun includes a gun body 1, a drive device, a deceleration device 3, a clutch device 4, a swing arm 5, a push rod 6, and a clamping component 7. The clamping component 7 is located at the front of the gun body 1, and the drive device is located at the rear of the gun body 1.

[0048] The push rod 6 is slidably disposed inside the gun body 1. The front end of the push rod 6 is connected to the clamping component 7. The push rod 6 is provided with a guide block 8, and the guide block 8 has a guide groove 81.

[0049] The deceleration device 3 is located on one side of the gun body 1, the swing arm 5 is located on the other side of the gun body 1, and the output end of the drive device is connected to the input end of the deceleration device 3.

[0050] The clutch device 4 includes an upper clutch 41, a lower clutch and a controller 43. The lower clutch is connected to the output end of the deceleration device 3. The upper clutch 41 is connected to one end of the swing arm 5. The other end of the swing arm 5 is provided with a sliding part 51, which extends into the guide groove 81.

[0051] The controller 43 is mounted on the gun body 1, and the controller 43 controls the connection or disengagement of the upper clutch 41 and the lower clutch;

[0052] When the upper clutch 41 and the lower clutch are connected, the drive device reduces the speed through the reduction device 3 and then drives the swing arm 5 to rotate through the clutch device 4, causing the sliding part 51 to slide in the guide groove 81 and push the push rod 6 to slide back and forth, so that the push rod 6 drives the clamping part 7 to open or close.

[0053] Furthermore, the driving device includes a motor 2 and a worm gear 21. The motor 2 is arranged at the rear of the gun body 1 in an inclined manner. The output end of the motor 2 is connected to the worm gear 21, and the worm gear 21 meshes with the input end of the reduction device 3.

[0054] Furthermore, the tail end of the motor 2 is inclined upward toward the gun body 1, and the worm gear 21 is inclined downward toward the gun body 1.

[0055] Furthermore, the reduction device 3 includes a housing 31, a worm gear 32, a sun gear 33, a planetary gear 34, a centering wheel 35, and an output shaft 36. The worm gear 32 is a hollow ring body, with external teeth 321 on the outer wall and internal teeth 322 on the inner wall.

[0056] The worm gear 32 is rotatably disposed in the inner cavity of the housing 31, and the external teeth 321 mesh with the worm 21;

[0057] The housing 31 is mounted on the gun body 1. The housing 31 is provided with a positioning shaft 37 at intervals corresponding to the inner cavity of the worm gear 32. The diameter of the core wheel 35 is larger than the diameter of the planetary gear 34. The core wheel 35 is sleeved on the positioning shaft 37. The outer wall of the core wheel 35 is in close contact with the inner wall of the worm gear 32 and is located outside the internal teeth 322.

[0058] The planetary gear 34 is sleeved on the positioning shaft 37, and the planetary gear 34 rotates about the positioning shaft 37 as the rotation center. The planetary gear 34 meshes with the internal teeth 322.

[0059] The sun gear 33 is rotatably disposed in the inner cavity of the housing 31. The sun gear 33 meshes with the planetary gear 34. The output shaft 36 is connected to the sun gear 33. The worm gear 32 drives the output shaft 36 to rotate through the planetary gear 34 and the sun gear 33.

[0060] Furthermore, the housing 31 includes a first accommodating cavity 311 and a second accommodating cavity 312, which are connected.

[0061] The worm 21 is rotatably disposed in the second accommodating cavity 312, and the worm wheel 32 is rotatably disposed in the first accommodating cavity 311. Part of the external teeth 321 of the worm wheel 32 enter the second accommodating cavity 312 and mesh with the worm 21.

[0062] The bottom wall of the first accommodating cavity 311 is provided with the positioning shaft 37 at intervals corresponding to the inner cavity of the worm gear 32.

[0063] Furthermore, the controller 43 includes a movable plate 431, an adjusting bolt 432, a pressure block 433 and a first spring 434, the lower clutch is a splined lower clutch 42, the output shaft 36 is a splined shaft, and the splined shaft extends through the gun body 1 toward the upper clutch 41;

[0064] The splined sleeve lower clutch 42 is provided with a slot 421. The splined sleeve lower clutch 42 is sleeved on the splined shaft. The first spring 434 is sleeved on the splined shaft. One end of the first spring 434 abuts against the splined shaft, and the other end of the first spring 434 abuts against the splined sleeve lower clutch 42. The first spring 434 constitutes the reset mechanism of the splined sleeve lower clutch 42.

[0065] The movable plate 431 has a first through hole 4311. The movable plate 431 is movably mounted on the gun body 1. The end of the movable plate 431 is inserted into the slot 421 of the splined clutch 42.

[0066] The adjusting bolt 432 passes through the first through hole 4311 and connects to the gun body 1. The pressure block 433 is sleeved on the adjusting bolt 432. One end of the pressure block 433 abuts against the head of the adjusting bolt 432, and the other end of the pressure block 433 abuts against the movable plate 431. The adjustment bolt 432 rotates and drives the pressure block 433 to move, thereby driving the lower clutch 42 of the spline sleeve to move, so that the lower clutch 42 of the spline sleeve and the upper clutch 41 are connected or separated.

[0067] Furthermore, the swing arm 5 also includes an arm body 52, a second spring 53, and a sliding block 54. The arm body 52 has a sliding groove 521. The second spring 53 and the sliding block 54 are placed in the sliding groove 521. One end of the second spring 53 abuts against the inner wall of the sliding groove 521, and the other end of the second spring 53 abuts against the sliding block 54. The second spring 53 constitutes the reset mechanism of the sliding block 54. The lower end of the sliding block 54 extends outward to form the sliding part 51. The output end of the clutch device 4 is connected to the arm body 52.

[0068] Furthermore, one side of the arm body 52 has a connection port 522 for connecting the output shaft, and the other side of the arm body 52 has the sliding groove 521.

[0069] Furthermore, it also includes a cover 523 and a bolt 524. The cover 523 is disposed on the surface of the arm body 52 to cover the sliding groove 521, and the bolt 524 passes through the cover 523 to lock the arm body 52.

[0070] Furthermore, the guide groove 81 is a vertical guide groove, and the direction of the guide groove 81 is perpendicular to the moving direction of the push rod 6.

[0071] Furthermore, it also includes a guide device 9, which includes a slide rail 91 and a slider 92. The slide rail 91 is disposed on the gun body 1, and the slider 92 sits on the slide rail 91 in a sliding manner. The slider 92 is connected to the guide block 8.

[0072] Furthermore, it also includes a tension wheel assembly 10. The clamping component 7 includes a first clamping member 71 and a second clamping member 72. The first clamping member 71 and the second clamping member 72 are respectively hinged to the gun body 1. The front part of the first clamping member 71 and the front part of the second clamping member 72 form a nail clamping opening 73. A nail pushing channel 74 is formed between the rear part of the first clamping member 71 and the rear part of the second clamping member 72. The nail pushing channel 74 and the nail clamping opening 73 are connected. The tension wheel assembly 10 is placed in the nail pushing channel 74 and connected to the push rod 6.

[0073] Furthermore, it also includes an automatic nail feeding device 20. The gun body 1 has a nail inlet at the position corresponding to the nail pushing channel 74. The automatic nail feeding device 20 is installed on the gun body 1, and the nail feeding outlet of the automatic nail feeding device 20 is connected to the nail inlet.

[0074] When the motor 2 drives the worm 21 to rotate, the worm 21 meshes with the worm wheel 32 in the reduction gear 3, and is further reduced in speed by the planetary gear 34 and the sun gear 33, and is connected to the swing arm 5 through the upper clutch 41 and the lower clutch. When the swing arm 5 rotates, the sliding block 54 at its lower end slides up and down in the vertical guide groove of the guide block 8. This vertical motion is converted into a horizontal thrust by the guide block 8, which pushes the push rod 6 back and forth, thereby driving the clamping component 7 at the front end to open and close, clamping or releasing the C-shaped nail bundle. At the moment of clamping open, the automatic nail feeding device 20 pushes the next nail into the channel to complete continuous nailing.

[0075] The motor 2 is installed at an angle at the rear of the gun body 1. The worm 21 directly meshes with the worm wheel 32, eliminating the horizontal and axial occupancy of traditional horizontal or multi-stage spur and helical gears. The reduction device 3 adopts a set of planetary gears 34 and sun gears 33, and the worm 21 and worm wheel 32 are respectively placed in the double-connected cavity of the housing 31. This not only optimizes the three-dimensional spatial layout, but also compresses the radial and axial dimensions, realizing the miniaturization design of the nail gun.

[0076] The diameter of the centering wheel 35 is larger than that of the planetary gear 34. The centering wheel 35 is in close contact with the inner wall of the worm gear 32 to achieve radial constraint on the planetary gear 34. The planetary gear 34 maintains a preset clearance with the internal gear and the sun gear 33, allowing thermal expansion and vibration to shift without changing the meshing clearance, thus avoiding jamming due to eccentricity or thermal expansion causing the tooth clearance to become smaller.

[0077] Users can disengage or engage the clutch device 4 without additional tools by rotating the adjusting bolt 432 on the outside of the gun body 1. Once disengaged, the swing arm 5 and push rod 6 can be quickly removed for inspection or replacement without disassembling the reduction gear 3 or motor 2, greatly shortening maintenance time and making operation simpler and more intuitive.

[0078] When the push rod 6 encounters resistance while moving forward, the sliding block 54 compresses the second spring 53, and the swing arm 5 continues to rotate instead of rigidly driving the push rod 6, thereby eliminating the overload torque and preventing the motor 2 from experiencing instantaneous overcurrent or overheating due to stall, thus achieving mechanical overload protection for the motor 2.

[0079] The guide block 8 on the push rod 6 is connected to the slider 92. The slider 92 slides along the length of the slide rail 91, thereby ensuring that the push rod 6 moves only in a predetermined horizontal direction, eliminating lateral sway and jamming, and improving the accuracy and stability of linear motion.

Claims

1. A nail gun with a push rod guiding function, comprising a gun body, a drive unit, a reduction unit, a swing arm, a push rod, a clamping component, and a guiding device, characterized in that: The drive device, deceleration device, and clamping component are mounted on the gun body, and the push rod is slidably mounted inside the gun body, with the front end of the push rod connected to the clamping component; The swing arm is movably mounted on the gun body. The input end of the deceleration device is connected to the output end of the drive device, and the output end of the deceleration device is connected to one end of the swing arm. The other end of the swing arm is connected to the push rod. The guiding device includes a slide rail and a slider. The slide rail is mounted on the gun body, and the slider sits on the slide rail in a sliding manner. The slider is connected to a push rod. The drive device is decelerated by the reduction device and drives the swing arm to rotate. The swing arm pushes the push rod to slide back and forth along the length of the slide rail, so that the push rod drives the clamping component to open or close.

2. The nail gun with push rod guiding function according to claim 1, characterized in that: The push rod is provided with a guide block, the guide block has a guide groove, and the guide block is connected to the slider; The swing arm is provided with a sliding part, which extends into the guide groove; The rotation of the swing arm causes the sliding part to slide in the guide groove and pushes the guide block to slide along the length of the slide rail, thereby limiting the sliding direction of the push rod.

3. The nail gun with push rod guiding function according to claim 2, characterized in that: The guide groove is a vertical guide groove, and the direction of the guide groove is perpendicular to the moving direction of the push rod.

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