Detachable automatic nail feeding mechanism and nail gun

Abstract

The utility model relates to a kind of automatic nail feeding mechanism of detachable rear tail frame, including nail feeding head, nail guide strip, rear tail frame and push nail device, the nail guide strip, for nail row placement and sliding;The nail feeding head is used to limit the number of nail feeding of each nail row;The rear tail frame includes nail guide strip connecting portion and nail gun connecting portion;The front end of the nail guide strip is connected with the nail feeding head, and the tail end of the nail guide strip is connected with the nail guide strip connecting portion of the rear tail frame in detachable mode;The push nail device includes coil spring assembly and push nail claw for pushing nail row to move, the upper portion of the push nail claw extends towards the direction of the nail guide strip for contacting nail row, and the coil spring assembly is connected with the push nail claw, and the coil spring assembly constitutes the power source of the push nail claw.By detachable connection of rear tail frame with nail guide strip, sliding strip and gun body, when maintaining cylinder, user only needs to remove rear tail frame, can separate and overhaul cover alone, without overall disassembly automatic nail feeding mechanism.

Description

Technical Field

[0001] This utility model relates to an automatic nail feeding mechanism and nail gun with a detachable rear tailstock. Background Technology

[0002] As a tool widely used in woodworking, decoration, furniture manufacturing and other fields, the pneumatic nail gun's automatic nail feeding mechanism plays a crucial role in ensuring continuous operation efficiency.

[0003] The tailstock of the existing automatic nail feeding structure cannot be removed separately. Pneumatic nail guns generally adopt an integrated connection between the automatic nail feeding structure and the gun body. The nail feeding mechanism is usually installed on the gun body by fasteners such as bolts. In some structural designs, the bolt at one end of the nail feeding mechanism even passes through the tailstock and the inspection cover and is directly locked to the gun body, thus forming an integral nail gun structure.

[0004] However, during long-term use, due to wear or damage to key components such as the cylinder, users often need to perform internal maintenance or replace parts of the nail gun. When it is necessary to remove the access cover to repair the cylinder, because the access cover is locked by the nail feeding mechanism, the user must first remove the fixing bolts and completely disassemble the entire automatic nail feeding mechanism from the gun body before proceeding with subsequent maintenance operations.

[0005] This disassembly and assembly process is not only cumbersome and time-consuming, but it can also easily lead to misalignment or damage to other parts of the nail feeding mechanism during disassembly, affecting the subsequent assembly accuracy and performance. Utility Model Content

[0006] The primary objective of this invention is to provide an automatic nail feeding mechanism with a simple structure and a detachable rear tailstock.

[0007] The second objective of this invention is to provide a nail gun that is simple and quick to repair.

[0008] The primary objective of this invention is achieved as follows: an automatic nail feeding mechanism with a detachable rear frame, comprising a nail feeding head, a nail guide strip, a rear frame, and a nail pushing device, wherein the nail guide strip is used for nail row placement and sliding.

[0009] The feeding head is used to limit the number of nails fed into the nail bank each time;

[0010] The rear tail frame includes a guide bar connector and a nail gun connector;

[0011] The front end of the guide pin strip is connected to the feeding head, and the rear end of the guide pin strip is detachably connected to the guide pin strip connecting part of the rear tail frame.

[0012] The pusher device includes a coil spring assembly and a pusher claw for pushing the nail row to move. The upper part of the pusher claw extends toward the guide nail bar to contact the nail row. The coil spring assembly and the pusher claw are connected, and the coil spring assembly constitutes the power source for the pusher claw.

[0013] By detachably connecting the tailstock, guide pins, sliding bars, and gun body, users can easily separate the inspection cover by removing the tailstock when repairing the cylinder, without having to disassemble the automatic nail feeding mechanism as a whole. This greatly simplifies the disassembly and assembly process and shortens maintenance time.

[0014] The detachable rear frame design not only reduces operational complexity and labor intensity, but also avoids secondary damage to key components such as the nail feed head and nail guide strip during repeated disassembly and assembly, thereby improving the service life and reliability of the nail gun and significantly enhancing maintenance efficiency and user experience.

[0015] The primary objective of this utility model can also be achieved by the following technical measures:

[0016] Furthermore, the guide pin strip includes a first tube, a second tube, and a barrier. The first tube and the second tube are arranged side by side, and the barrier is placed between the first tube and the second tube. The first tube, the barrier, and the second tube are welded together to form the guide pin strip. An insertion gap is formed between the tail end of the first tube, the tail end of the second tube, and the barrier.

[0017] The guide pin connecting part is a connecting post. The upper diameter of the connecting post is greater than the width of the insertion gap, the lower diameter of the connecting post is greater than the width of the insertion gap, and the middle diameter of the connecting post is smaller than the width of the insertion gap.

[0018] The pusher device also includes a sliding bar, the rear tail frame also includes a sliding bar connecting part, the lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar;

[0019] The middle part of the connecting post is placed in the insertion gap, the upper part of the connecting post abuts against the guide pin strip, and the lower part of the connecting post abuts against the guide pin strip, thereby connecting the guide pin strip and the guide pin connecting part.

[0020] The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

[0021] This structure, by arranging the first and second tubes and the barrier components side by side in the guide pin strip and welding them together to form a uniform and controllable insertion gap, and by cooperating with the different diameters of the connecting column (wider at the top and bottom and narrower in the middle), enables the guide pin strip and the rear tail frame to achieve a triple engagement of "clamping-locking-limiting" during assembly: the middle part of the connecting column enters the insertion gap for positioning, and the upper and lower end faces of the connecting column abut against the first and second tubes to ensure locking, thereby obtaining good tensile and shear resistance, ensuring that the guide pin strip does not loosen under working vibration and remains in a precise position.

[0022] At the same time, the sliding bar achieves a reliable connection without additional fasteners by quickly fitting into a socket with an opening wider than its width, which greatly shortens the assembly and disassembly time.

[0023] Furthermore, the guide pin connecting part is a connecting post, and the upper diameter and lower diameter of the connecting post are both larger than the middle diameter of the connecting post;

[0024] The pusher device also includes a sliding bar, and the rear tail frame also includes a sliding bar connecting part. The lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar.

[0025] The guide pin has a connecting hole near its tail end. The connecting hole includes a strip-shaped hole and a circular hole. The width of the strip-shaped hole is smaller than the lower diameter of the connecting post and larger than the middle diameter of the connecting post. The diameter of the circular hole is larger than the lower diameter of the connecting post.

[0026] The middle part of the connecting post slides through the circular hole into the strip hole, and the connecting post and the connecting hole are connected to realize the connection between the guide pin strip and the guide pin connecting part;

[0027] The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

[0028] This structure utilizes the different diameter design of the connecting column, combined with the combination of the circular hole and the strip hole set at the tail end of the guide pin, so that the connecting column is first inserted through the larger diameter circular hole, and then automatically locked when it slides into the narrow strip hole. This achieves a self-locking connection of "insertion-rotation-locking", which can obtain reliable pull-out and shear strength without bolts or other additional fasteners, greatly improving assembly efficiency and structural tightness.

[0029] At the same time, the sliding bar achieves a reliable connection without additional fasteners by quickly fitting into a socket with an opening wider than its width, which greatly shortens the assembly and disassembly time.

[0030] When maintenance is required, users only need to slide the connecting column out of the strip hole and pull it away from the sliding bar to quickly disassemble and reassemble the tailstock, which significantly shortens the maintenance cycle and reduces the difficulty of operation.

[0031] Furthermore, the guide pin connecting part is a connecting post, the middle side wall of the connecting post has a notch, the middle diameter of the connecting post is smaller than the lower diameter of the connecting post, and the upper diameter of the connecting post is the same as the lower diameter of the connecting post.

[0032] The pusher device also includes a sliding bar, the rear tail frame also includes a sliding bar connecting part, the lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar;

[0033] The guide pin has a connecting hole near its tail end. The connecting hole includes a strip-shaped hole and a circular hole. The width of the strip-shaped hole is smaller than the lower diameter of the connecting post and larger than the middle diameter of the connecting post. The diameter of the circular hole is larger than the lower diameter of the connecting post.

[0034] The middle part of the connecting post slides through the circular hole into the strip hole, and the connecting post and the connecting hole are connected to realize the connection between the guide pin strip and the guide pin connecting part;

[0035] The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

[0036] This structure utilizes the different diameter design of the connecting column, combined with the combination of the circular hole and the strip hole set at the tail end of the guide pin, so that the connecting column is first inserted through the larger diameter circular hole, and then automatically locked when it slides into the narrow strip hole. This achieves a self-locking connection of "insertion-rotation-locking", which can obtain reliable pull-out and shear strength without bolts or other additional fasteners, greatly improving assembly efficiency and structural tightness.

[0037] At the same time, the sliding bar achieves a reliable connection without additional fasteners by quickly fitting into a socket with an opening wider than its width, which greatly shortens the assembly and disassembly time.

[0038] When maintenance is required, users only need to slide the connecting column out of the strip hole and pull it away from the sliding bar to quickly disassemble and reassemble the tailstock, which significantly shortens the maintenance cycle and reduces the difficulty of operation.

[0039] Furthermore, the rear tail frame also includes a sliding bar, the guide pin bar connecting part is welded to the tail end of the sliding bar and located above the sliding bar, and the nail gun connecting part is welded to the tail end of the sliding bar and located below the sliding bar;

[0040] The guide pin connecting part includes a horizontal part and a vertical part, which are connected to form an L-shaped guide pin connecting part. The horizontal part has a bolt through hole.

[0041] A bolt seat is provided near the tail end of the guide pin strip;

[0042] The front end of the sliding bar is detachably connected to the pusher device, the lower part of the pusher claw sits on the sliding bar in a sliding manner, the bolt through hole and the bolt seat are connected, and the bolt passes through the bolt through hole to lock the bolt seat.

[0043] Furthermore, the nail gun connection has a through hole to facilitate the passage of bolts.

[0044] The structure features a through hole coaxial with the bolt hole of the inspection cover at the nail gun connection part of the rear frame, which allows the bolts to be passed through the inspection cover and the rear frame connection part in sequence and directly fastened to the gun body during installation, greatly simplifying the assembly process.

[0045] Meanwhile, the through-hole is compatible with the existing access cover's opening layout, requiring no additional modifications to the nail gun body or access cover, maintaining interchangeability with industry-standard parts. When maintaining the cylinder or internal components, users can quickly separate the tailstock from the access cover simply by removing the bolts, enabling efficient maintenance and further improving the nail gun's maintainability and reliability.

[0046] Furthermore, the guide pin strip is a stainless steel guide pin strip.

[0047] The guide pins are made of stainless steel, which significantly improves their wear resistance and corrosion resistance. This allows them to maintain a smooth and straight surface even during long-term, high-frequency sliding of the pin row, reducing frictional heat and material shedding, thereby extending their service life and reducing maintenance frequency.

[0048] The hardness and rigidity of stainless steel ensure that the guide pin strip is not easily deformed or bent when subjected to repeated impacts from the pusher claw and lateral pressure from the pin row, maintaining a precise guiding effect at all times. The sliding resistance of the pin row on the guide pin strip is further reduced, the sliding is smoother, the reliability of the pin feeding action is improved, the phenomenon of pin jamming and missing pins is greatly reduced, and the work efficiency is improved.

[0049] In addition, the self-lubricating and easy-to-clean properties of stainless steel, combined with simple daily maintenance, ensure that the guide strip maintains excellent performance for a long time, improving the stability of the overall automatic nail feeding mechanism and the user experience.

[0050] Furthermore, the feeding head includes a support base and a feeding limiting component for limiting the number of feeding nails. The support base has a feeding port at the head position corresponding to the guide nail bar, and the feeding limiting component is disposed on the support base and located next to the feeding port.

[0051] This nail feeding limiting component ensures that only a single nail leaves the guide strip through the nail feeding port during each nail pushing action, greatly improving nail feeding consistency and positioning accuracy, avoiding "stacked nails," "missing nails," or "connected nails," thereby improving work quality and the consistency of the finished product appearance.

[0052] In addition, the single-nail feed design reduces the risk of nail jamming during high-frequency continuous operation, and reduces maintenance and cleaning workload.

[0053] Furthermore, the nail feeding limiting assembly includes a spring, a sheath, and a pin. The bottom of the support base has a sheath cavity with an open top near the nail feeding port, and the side wall of the sheath cavity has an insertion hole.

[0054] The sheath has a limiting opening with a diameter larger than that of the insertion hole. The sheath is movably placed inside the sheath cavity. The pin passes through the insertion hole and the limiting opening to connect to the sheath cavity. The pin limits the upward and downward sliding distance of the sheath.

[0055] The spring is placed inside the sheath cavity, with one end of the spring abutting against the sheath and the other end abutting against the sheath cavity. The spring constitutes the reset mechanism of the sheath.

[0056] Furthermore, the coil spring assembly includes a coil spring seat, a coil spring shaft, and a coil spring. The coil spring seat is connected to the feeding head, the coil spring shaft is disposed on the coil spring seat, the coil spring is sleeved on the coil spring shaft, the coil spring is connected to the pusher claw, and the front end of the sliding bar is detachably connected to the coil spring seat.

[0057] This coil spring assembly directly connects the coil spring seat to the nail feeding head and establishes a coil spring shaft on the coil spring seat. This allows the coil spring to smoothly extend and retract along a fixed axis after being subjected to force, ensuring that the nail pusher claw obtains a stable and controllable reset force after being pulled. The user only needs to manually pull the nail pusher claw once to store energy in the coil spring. After releasing the hand, the coil spring retracts along a predetermined axis, driving the nail pusher claw to move smoothly and push the nail row, realizing the automatic nail feeding action.

[0058] Because of its excellent axial positioning, the coil spring has a guaranteed service life and number of repeated stretching cycles, providing a longer and more stable power source for the automatic nail feeding mechanism.

[0059] The second objective of this utility model is achieved as follows:

[0060] A nail gun includes a nail pusher assembly, a gun body, an inspection cover, and a bolt. The gun body includes a clamp for clamping nails output from a guide bar into a ring shape, a gun body, and a handle. The gun body has a rear-open receiving cavity. The inspection cover has a bolt hole. The bolt passes through the bolt hole to lock the gun body and close the receiving cavity. The clamp is disposed on the gun body and located in front of the gun body. The handle is connected to the gun body.

[0061] The support base is locked to the gun body by bolts. The bolts pass through the through hole of the nail gun connection part and the bolt hole of the inspection cover to lock the gun body, thereby realizing the connection between the automatic nail feeding mechanism and the gun body.

[0062] The gripper includes a left gripper and a right gripper, which are hinged together. The left gripper located in front of the hinge is the left gripper, and the left gripper located behind the hinge is the left handle. The right gripper located in front of the hinge is the right gripper, and the right gripper located behind the hinge is the right handle. A clamping cavity with a specific shape is formed between the left gripper and the right gripper. A push-pin area is formed between the left handle and the right handle, and the push-pin area is connected to the clamping cavity.

[0063] The sheath extends into the push-pin area, and the bottom end of the sheath and the bottom of the push-pin area form a push-pin channel. The height of the push-pin channel changes with the rise and fall of the sheath. The height change range of the push-pin channel is less than the height of two nails. The nail feed port is connected to the push-pin area and is located behind the push-pin channel.

[0064] The pusher assembly includes a cylinder, a piston rod, and a pusher plate. The cylinder is placed inside the receiving cavity. One end of the piston rod is connected to the cylinder in a transmission manner, and the other end of the piston rod extends out of the receiving cavity and is connected to the pusher plate. A roller for driving the gripper to move is provided at the connection between the pusher plate and the piston rod.

[0065] The roller and pusher are placed in the pusher area of ​​the clamp. When the cylinder drives the piston rod to extend, the pusher extends with the piston rod, allowing the pusher to enter the pusher channel and extend towards the clamping cavity. At the same time, the roller extends with the piston rod, causing the left and right handles to open, causing the left and right clamps to close, so that the clamping cavity closes.

[0066] When the cylinder drives the piston rod to retract, the pusher plate retracts along with the piston rod, leaving the pusher channel and moving away from the clamping cavity. At the same time, the roller retracts along with the piston rod, causing the left and right handles to close, thus opening the left and right clamping parts and opening the clamping cavity.

[0067] As the piston rod extends, the pusher plate enters the height-limiting pusher channel, reliably pushing a single nail into the clamping cavity. Simultaneously, the roller drives the left and right clamps to close synchronously, clamping the nail into a ring shape. When the piston rod retracts, the pusher plate and roller work together to reset, and the left and right clamps open, completing the opening of the nail cavity. The entire action is smooth and seamless, shortening the action cycle and ensuring efficient coordination of nail clamping, nail feeding, and reset.

[0068] The height of the push-nail channel changes dynamically with the up-and-down displacement of the sheath, and is always less than the total height of the two nails: at the initial position, it blocks excess nails, and only one nail is allowed to pass through during the pushing process; after the nail pushes the sheath to overcome the spring force and passes through, the spring resets and resets the height of the push-nail channel, cutting off the passage of the second nail through the push-nail channel, thereby completely avoiding the phenomena of stacked nails, stuck nails or missing nails, and greatly improving the reliability of nail feeding and the quality of nailing.

[0069] By designing the rear tailstock, access cover, and gun body with coaxial connection holes, and allowing bolts to pass through limiting holes to lock the rear tailstock and access cover together, users only need to remove the bolts and remove the rear tailstock and access cover when maintaining the cylinder or internal components, without having to disassemble the entire automatic nail feed assembly. This significantly shortens the maintenance cycle, reduces the difficulty of maintenance, and avoids accidental damage to components such as the nail feed head, guide strip, and sliding strip during disassembly and assembly.

[0070] The beneficial effects of this utility model are as follows:

[0071] This utility model detachably connects the rear tailstock, guide pin strip, sliding strip, and gun body, allowing users to separate the inspection cover by simply removing the rear tailstock when repairing the cylinder, without having to disassemble the automatic nail feeding mechanism as a whole. This greatly simplifies the disassembly and assembly steps and shortens maintenance time.

[0072] This utility model features a detachable rear frame design that not only reduces operational complexity and labor intensity but also prevents secondary damage to key components such as the nail feed head, nail guide strip, and sliding strip during repeated disassembly and assembly. This improves the lifespan and reliability of the nail gun and significantly enhances maintenance efficiency and user experience.

[0073] This invention utilizes a variable diameter structure with a wider upper and lower end and a narrower middle section on the connecting column, along with a circular hole and a strip-shaped hole at the tail end of the guide pin strip, to achieve a "insertion-slide-lock" self-locking mechanism. This allows for a high-strength and reliable connection without the need for additional fasteners, and significantly improves assembly and disassembly efficiency.

[0074] This invention, by arranging first and second tubes and a barrier component side by side in the guide pin strip and welding them together to form a uniform and controllable insertion gap, and by coordinating the different diameters of the connecting column (wider at the top and bottom and narrower in the middle), enables the guide pin strip and the rear tail frame to achieve a triple engagement of "clamping-locking-limiting" during assembly: the middle part of the connecting column enters the insertion gap for positioning, and the upper and lower end faces of the connecting column abut against the first and second tubes to ensure locking, thereby obtaining good tensile and shear resistance, ensuring that the guide pin strip does not loosen under working vibration and remains in a precise position.

[0075] This utility model features a sleeve-spring limiting mechanism on the nail feeding head. In the initial state, the height of the nail pushing channel is less than that of a single nail. A single nail needs to push up the sleeve to overcome the spring force before it can pass through the nail pushing channel. Furthermore, the height of the nail pushing channel is always less than the height of two nails, thus achieving precise single nail feeding and preventing stacked nails, consecutive nails, and missing nails. Attached Figure Description

[0076] Figure 1 This is a schematic diagram of the automatic nail feeding mechanism in Example 1.

[0077] Figure 2 This is an exploded view of the automatic nail feeding mechanism of Example 1.

[0078] Figure 3 This is a schematic diagram of the rear tail frame of Example 1.

[0079] Figure 4 This is a schematic diagram of the nail gun in Example 1.

[0080] Figure 5 This is a top view of the nail gun in Example 1.

[0081] Figure 6 for Figure 5 AA sectional view.

[0082] Figure 7 This is a front view of the nail gun in Example 1.

[0083] Figure 8 for Figure 7 BB section view (initial state).

[0084] Figure 9 for Figure 8 CC section view.

[0085] Figure 10 for Figure 7 BB sectional view (push pin state).

[0086] Figure 11 for Figure 10 CC section view.

[0087] Figure 12 This is a schematic diagram of the disassembly of the nail gun and rear frame in Example 1.

[0088] Figure 13 This is a schematic diagram of the automatic nail feeding mechanism in Example 2.

[0089] Figure 14 This is an exploded view of the automatic nail feeding mechanism in Example 2.

[0090] Figure 15 This is a schematic diagram of the rear tail frame of Example 2.

[0091] Figure 16 This is a schematic diagram of the rear tail frame of Example 3.

[0092] Figure 17 This is a partial schematic diagram of the automatic nail feeding mechanism in Example 3.

[0093] Figure 18 This is a partial front view of the automatic nail feeding mechanism of Example 3.

[0094] Figure 19 for Figure 18 DD sectional view.

[0095] Figure 20 This is a schematic diagram of the nail gun in Example 4.

[0096] Figure 21 This is an assembly diagram of the nail gun and rear tail frame in Example 4.

[0097] Figure 22 This is a partial schematic diagram of the automatic nail feeding mechanism in Example 4.

[0098] Figure 23 This is a partial assembly drawing of the automatic nail feeding mechanism in Example 4.

[0099] Figure 24 This is a partial schematic diagram of the guide pin strip in Example 4.

[0100] Figure 25 This is a schematic diagram of the rear tail frame of Example 4. Detailed Implementation

[0101] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0102] Implementation examples, in conjunction with Figures 1 to 12 As shown, an automatic nail feeding mechanism with a detachable tailstock includes a nail feeding head 1, a nail guide strip 2, a tailstock 4, and a nail pushing device 5. The nail row is composed of multiple nails arranged in combination.

[0103] The guide strip 2 is used for the placement and sliding of the nail row;

[0104] The feeding head 1 is used to limit the number of nails fed into the nail row each time;

[0105] The rear tail frame 4 includes a guide bar connecting part, a sliding bar connecting part 41, and a nail gun connecting part 42;

[0106] The front end of the guide pin strip 2 is connected to the feeding head 1, and the rear end of the guide pin strip 2 is detachably connected to the guide pin strip connecting part of the rear tail frame 4.

[0107] The pusher device 5 includes a coil spring assembly 51 and a pusher claw 52 for pushing the nail row to move. The upper part of the pusher claw 52 extends toward the guide nail bar 2 to contact the nail row. The coil spring assembly 51 and the pusher claw 52 are connected, and the coil spring assembly 51 constitutes the power source of the pusher claw 52.

[0108] Furthermore, the guide pin strip 2 includes a first tube 21, a second tube 22, and a barrier 23. The first tube 21 and the second tube 22 are arranged side by side, and the barrier 23 is placed between the first tube 21 and the second tube 22. The first tube 21, the barrier 23, and the second tube 22 are welded together to form the guide pin strip 2. The tail end of the first tube 21, the tail end of the second tube 22, and the barrier 23 form an insertion gap 24.

[0109] The guide pin strip connecting part is a connecting post 43. The upper part 431 of the connecting post 43 has a diameter greater than the width of the insertion gap 24, the lower part 433 of the connecting post 43 has a diameter greater than the width of the insertion gap 24, and the middle part 432 of the connecting post 43 has a diameter less than the width of the insertion gap 24.

[0110] The pusher device 5 also includes a sliding bar 3, the rear tail frame 4 also includes a sliding bar connecting part 41, the lower part of the pusher claw 52 sits on the sliding bar 3 in a sliding manner, and the sliding bar connecting part 41 has an insertion slot 411 that is wider than the sliding bar 3.

[0111] The middle part 432 of the connecting post 43 is placed in the insertion gap 24, the upper part 431 of the connecting post 43 abuts against the guide pin strip 2, and the lower part 433 of the connecting post 43 abuts against the guide pin strip 2, thereby connecting the guide pin strip 2 and the guide pin connecting part.

[0112] The sliding bar 3 is inserted into the socket 411 to connect the sliding bar 3 and the sliding bar connecting part 41.

[0113] Furthermore, the nail gun connection part 42 has a through hole 421 to facilitate the passage of bolts.

[0114] Furthermore, the guide pin 2 is a stainless steel guide pin.

[0115] Furthermore, the feeding head 1 includes a support base 6 and a feeding limiting component 7 for limiting the number of feeding nails. The support base 6 has a feeding port 61 at the head position corresponding to the guide nail bar 2. The feeding limiting component 7 is disposed on the support base 6 and located next to the feeding port 61.

[0116] Furthermore, the nail feeding restriction assembly 7 includes a spring 71, a sheath 72, and a pin 73. The bottom of the support base 6 has a sheath cavity 62 with an open top near the nail feeding port 61, and the side wall of the sheath cavity 62 has an insertion hole 621.

[0117] The sheath 72 has a limiting opening 721 with a diameter larger than that of the insertion hole 621. The sheath 72 is movably placed inside the sheath cavity 62. The pin 73 passes through the insertion hole 621 and the limiting opening 721 and connects to the sheath cavity 62. The pin 73 limits the upward and downward sliding distance of the sheath 72.

[0118] The spring 71 is placed inside the sheath cavity 62, with one end of the spring 71 abutting against the sheath 72 and the other end of the spring 71 abutting against the sheath cavity 62. The spring 71 constitutes the reset mechanism of the sheath 72.

[0119] Furthermore, the coil spring assembly 51 includes a coil spring seat 511, a coil spring shaft 512, and a coil spring 513. The coil spring seat 511 is connected to the nail feeding head 1, the coil spring shaft 512 is disposed on the coil spring seat 511, the coil spring 513 is sleeved on the coil spring shaft 512, the coil spring 513 is connected to the nail pusher 52, and the front end of the sliding bar 3 is detachably connected to the coil spring seat 511.

[0120] A nail gun includes a nail pusher assembly 8, a gun body 9, an inspection cover 91, and a bolt 92. The gun body 9 includes a clamping jaw 93 for clamping nails output from a nail guide bar 2 into a ring shape, a gun body 94, and a handle 95. The gun body 94 is provided with a rear-open receiving cavity 941. The inspection cover 91 is provided with a bolt hole 911. The bolt 92 passes through the bolt hole 911, locks onto the gun body 94, and closes the receiving cavity 941. The clamping jaw 93 is disposed on the gun body 9 and located in front of the gun body 94. The handle 95 is connected to the gun body 94.

[0121] The support base 6 is locked to the gun body 9 by bolts 92. The bolts 92 pass through the through hole 421 of the nail gun connection part 42 and the bolt hole 911 of the inspection cover 91 to lock the gun body 94, thereby realizing the connection between the automatic nail feeding mechanism and the gun body 9.

[0122] The gripper 93 includes a left gripper and a right gripper, which are hinged together. The left gripper located in front of the hinge is the left gripper, and the left gripper located behind the hinge is the left handle. The right gripper located in front of the hinge is the right gripper, and the right gripper located behind the hinge is the right handle. A nail-clamping cavity 933 with a specific shape variation is formed between the left gripper and the right gripper. A nail-pushing area 934 is formed between the left handle and the right handle. The nail-pushing area 934 and the nail-clamping cavity 933 are connected.

[0123] The sheath 72 extends into the push nail area 934. The bottom end of the sheath 72 and the bottom of the push nail area 934 form a push nail channel 935. The height of the push nail channel 935 changes with the rise and fall of the sheath 72. The height change range of the push nail channel 935 is less than the height of two nails. The nail feeding port 61 is connected to the push nail area 934 and is located behind the push nail channel 935.

[0124] The pusher assembly 8 includes a cylinder 81, a piston rod 82, and a pusher plate 83. The cylinder 81 is placed in the receiving cavity 941. One end of the piston rod 82 is connected to the cylinder 81, and the other end of the piston rod 82 extends out of the receiving cavity 941 and is connected to the pusher plate 83. A roller 84 for driving the gripper 93 is provided at the connection between the pusher plate 83 and the piston rod 82.

[0125] The roller 84 and the pusher plate 83 are placed in the pusher area 934 of the clamp 93. When the cylinder 81 drives the piston rod 82 to extend, the pusher plate 83 extends with the piston rod 82, causing the pusher plate 83 to enter the pusher channel 935 and extend towards the clamping cavity 933. At the same time, the roller 84 extends with the piston rod 82, causing the left and right handles to open, causing the left and right clamps to close, so that the clamping cavity 933 closes.

[0126] When the cylinder 81 drives the piston rod 82 to retract, the pusher plate 83 retracts along with the piston rod 82, and the pusher plate 83 leaves the pusher channel 935 and moves away from the clamping cavity 933. At the same time, the roller 84 retracts along with the piston rod 82, causing the left and right handles to close, so that the left and right clamps open, thereby opening the clamping cavity 933.

[0127] Automatic nail feeding principle

[0128] The user first places the nails on the guide strip 2, then pulls the pusher claw 52 to press against the end of the nails, storing energy in the coil spring 513 assembly 51. When the user releases the hand, the coil spring 513 releases the tension, and the pusher claw 52 moves forward along the slide bar 3, moving the entire nails forward by one nail pitch, thus continuously completing the continuous and stable automatic nail feeding action.

[0129] Push nail limiting principle

[0130] Initially, the sheath 72 moves downward under the force of the spring 71. At this time, the height of the pusher channel 935 is less than the height of a single nail. Under the thrust of the cylinder 81, the single nail pushes up the sheath 72 and passes smoothly through the pusher channel 935. After the nail passes, the spring 71 resets the sheath 72, and the pusher channel 935 returns to a height less than that of a single nail. Moreover, the maximum height of the pusher channel 935 is less than the height of two nails, effectively preventing stacked nails, consecutive nails, or missing nails, ensuring that only one nail is fed out each time.

[0131] How a nail gun works:

[0132] When the user starts the nail gun, the cylinder 81 drives the piston rod 82 to extend, and the nail pusher 83 pushes a single nail through the nail pusher channel 935 into the clamping chamber. At the same time, the roller 84 connected to the piston rod 82 drives the left and right handles to open, so that the left and right clamps close at the front end of the hinge. The left and right clamps apply radial compressive force to the nail, bending the nail into a ring shape. Then the cylinder 81 retracts, the nail pusher 83 retracts, the roller 84 drives the left and right handles to reset and open, and the left and right clamps open, completing the nail's ring-shaped formation and release.

[0133] Quickly remove cylinder 81 from rear tailstock 4 and access cover 91 for repair:

[0134] When maintenance is required on the cylinder 81 inside the gun body 9, the user only needs to remove the bolt 92 that passes through the through hole 421 of the nail gun connection part 42 of the inspection cover 91 and the tailstock 4, so that the nail gun connection part 42 is separated from the gun body 9. Then the user moves the tailstock 4, so that the guide nail strip connection part and the guide nail strip 2 are separated, and the sliding strip connection part 41 and the sliding strip 3 are separated, so that the tailstock 4 can be removed. Then the user removes the inspection cover 91, exposing the cylinder 81 assembly inside the receiving cavity 941. After the maintenance is completed, the cylinder 81 assembly is reassembled in reverse order. There is no need to disassemble the guide nail strip 2, the sliding strip 3 or the push nail assembly 8, which greatly simplifies the maintenance process.

[0135] Example 2, combined with Figures 13 to 15 As shown, the difference between Example 2 and Example 1 is that:

[0136] Furthermore, the guide pin connecting part is a connecting post 43, and the diameter of the upper part 431 and the lower part 433 of the connecting post 43 are both larger than the diameter of the middle part 432 of the connecting post 43;

[0137] The pusher device 5 also includes a sliding bar 3, the rear tail frame 4 also includes a sliding bar connecting part 41, the lower part of the pusher claw 52 sits on the sliding bar 3 in a sliding manner, and the sliding bar connecting part 41 has an insertion slot 411 that is wider than the sliding bar 3.

[0138] The guide pin 2 has a connecting hole 10 near its tail end. The connecting hole 10 includes a strip-shaped hole 101 and a circular hole 102. The width of the strip-shaped hole 101 is smaller than the diameter of the lower part 433 of the connecting post 43 and larger than the diameter of the middle part 432 of the connecting post 43. The diameter of the circular hole 102 is larger than the diameter of the lower part 433 of the connecting post 43.

[0139] The middle part 432 of the connecting post 43 passes through the circular hole 102 and slides into the strip hole 101. The connecting post 43 and the connecting hole 10 are connected, realizing the connection between the guide pin strip 2 and the guide pin connecting part.

[0140] The sliding bar 3 is inserted into the socket 411 to connect the sliding bar 3 and the sliding bar connecting part 41.

[0141] The guide pin 2 is a hollow stainless steel guide pin, and the connecting hole 10 is opened on the top surface of the guide pin 2 near its tail end.

[0142] Example 3, combined with Figures 16 to 19 As shown, the difference between Example 3 and Example 1 is that:

[0143] Furthermore, the guide pin connecting part is a connecting post 43, the middle part 432 of the connecting post 43 has a notch 4321 on its side wall, the diameter of the middle part 432 of the connecting post 43 is smaller than the diameter of the lower part 433 of the connecting post 43, and the diameter of the upper part 431 of the connecting post 43 is the same as the diameter of the lower part 433 of the connecting post 43.

[0144] The pusher device 5 also includes a sliding bar 3, the rear tail frame 4 also includes a sliding bar connecting part 41, the lower part of the pusher claw 52 sits on the sliding bar 3 in a sliding manner, and the sliding bar connecting part 41 has an insertion slot 411 that is wider than the sliding bar 3.

[0145] The guide pin 2 has a connecting hole 10 near its tail end. The connecting hole 10 includes a strip-shaped hole 101 and a circular hole 102. The width of the strip-shaped hole 101 is smaller than the diameter of the lower part 433 of the connecting post 43 and larger than the diameter of the middle part 432 of the connecting post 43. The diameter of the circular hole 102 is larger than the diameter of the lower part 433 of the connecting post 43.

[0146] The middle part 432 of the connecting post 43 passes through the circular hole 102 and slides into the strip hole 101. The connecting post 43 and the connecting hole 10 are connected, realizing the connection between the guide pin strip 2 and the guide pin connecting part.

[0147] The sliding bar 3 is inserted into the socket 411 to connect the sliding bar 3 and the sliding bar connecting part 41.

[0148] The guide pin 2 is a hollow stainless steel guide pin, and the connecting hole 10 is opened on the top surface of the guide pin 2 near its tail end.

[0149] Example 4, combined with Figures 20 to 25 As shown, the difference between Example 4 and Example 1 is:

[0150] Furthermore, the rear tail frame 4 includes a guide pin connecting part, a nail gun connecting part 42, and a sliding bar 3. The guide pin connecting part is welded to the tail end of the sliding bar 3 and is located above the sliding bar 3. The nail gun connecting part 42 is welded to the tail end of the sliding bar 3 and is located below the sliding bar 3.

[0151] The guide pin strip connecting part includes a horizontal part 400 and a vertical part 500, which are connected to form an L-shaped guide pin strip connecting part. The horizontal part 400 has a bolt through hole 600.

[0152] The guide pin 2 is provided with a bolt seat 200 near its tail end;

[0153] The front end of the sliding bar 3 is detachably connected to the spring seat 511 of the pusher 5. The lower part of the pusher claw 52 sits on the sliding bar 3 in a sliding manner. The bolt through hole 600 and the bolt seat 200 are connected. The bolt 92 passes through the bolt through hole 600 to lock the bolt seat 200.

Claims

1. A detachable automatic nail feeding mechanism for a rear tailstock, comprising a nail feeding head, a nail guide bar, a rear tailstock, and a nail pushing device, characterized in that: The guide strip is used for the placement and sliding of the nail rows; The feeding head is used to limit the number of nails fed into the nail bank each time; The rear tail frame includes a guide bar connector and a nail gun connector; The front end of the guide pin strip is connected to the feeding head, and the rear end of the guide pin strip is detachably connected to the guide pin strip connecting part of the rear tail frame. The pusher device includes a coil spring assembly and a pusher claw for pushing the nail row to move. The upper part of the pusher claw extends toward the guide nail bar to contact the nail row. The coil spring assembly and the pusher claw are connected, and the coil spring assembly constitutes the power source for the pusher claw.

2. The automatic nail feeding mechanism according to claim 1, wherein: The guide pin strip includes a first tube, a second tube, and a barrier. The first tube and the second tube are arranged side by side, and the barrier is placed between the first tube and the second tube. The first tube, the barrier, and the second tube are welded together to form the guide pin strip. An insertion gap is formed between the tail end of the first tube, the tail end of the second tube, and the barrier. The guide pin connecting part is a connecting post. The upper diameter of the connecting post is greater than the width of the insertion gap, the lower diameter of the connecting post is greater than the width of the insertion gap, and the middle diameter of the connecting post is smaller than the width of the insertion gap. The pusher device also includes a sliding bar, the rear tail frame also includes a sliding bar connecting part, the lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar; The middle part of the connecting post is placed in the insertion gap, the upper part of the connecting post abuts against the guide pin strip, and the lower part of the connecting post abuts against the guide pin strip, thereby connecting the guide pin strip and the guide pin connecting part. The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

3. The automatic nail feed mechanism according to claim 1, wherein: The guide pin strip connecting part is a connecting post, and the upper diameter and lower diameter of the connecting post are both larger than the middle diameter of the connecting post; The pusher device also includes a sliding bar, and the rear tail frame also includes a sliding bar connecting part. The lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar. The guide pin has a connecting hole near its tail end. The connecting hole includes a strip-shaped hole and a circular hole. The width of the strip-shaped hole is smaller than the lower diameter of the connecting post and larger than the middle diameter of the connecting post. The diameter of the circular hole is larger than the lower diameter of the connecting post. The middle part of the connecting post slides through the circular hole into the strip hole, and the connecting post and the connecting hole are connected to realize the connection between the guide pin strip and the guide pin connecting part; The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

4. The detachable automatic nail feeding mechanism for the rear tailstock according to claim 1, characterized in that: The guide pin connecting part is a connecting post, the middle side wall of the connecting post has a notch, the middle diameter of the connecting post is smaller than the lower diameter of the connecting post, and the upper diameter of the connecting post is the same as the lower diameter of the connecting post. The pusher device also includes a sliding bar, the rear tail frame also includes a sliding bar connecting part, the lower part of the pusher claw sits on the sliding bar in a sliding manner, and the sliding bar connecting part has an insertion port that is wider than the width of the sliding bar; The guide pin has a connecting hole near its tail end. The connecting hole includes a strip-shaped hole and a circular hole. The width of the strip-shaped hole is smaller than the lower diameter of the connecting post and larger than the middle diameter of the connecting post. The diameter of the circular hole is larger than the lower diameter of the connecting post. The middle part of the connecting post slides through the circular hole into the strip hole, and the connecting post and the connecting hole are connected to realize the connection between the guide pin strip and the guide pin connecting part; The sliding bar is inserted into the socket to connect the sliding bar and the sliding bar connector.

5. The automatic nail feeding mechanism according to claim 1, characterized in that: The rear tail frame also includes a sliding bar, the guide pin bar connecting part is welded to the tail end of the sliding bar and located above the sliding bar, and the nail gun connecting part is welded to the tail end of the sliding bar and located below the sliding bar; The guide pin connecting part includes a horizontal part and a vertical part, which are connected to form an L-shaped guide pin connecting part. The horizontal part has a bolt through hole. A bolt seat is provided near the tail end of the guide pin strip; The front end of the sliding bar is detachably connected to the pusher device, the lower part of the pusher claw sits on the sliding bar in a sliding manner, the bolt through hole and the bolt seat are connected, and the bolt passes through the bolt through hole to lock the bolt seat.

6. The detachable automatic nail feeding mechanism of the trailing frame according to any one of claims 2-5, characterized in that: The nail gun connection has a through hole to facilitate the passage of bolts.

7. The detachable automatic nail feeding mechanism of the trailing frame according to any one of claims 1 to 5, characterized in that: The guide pin is a stainless steel guide pin.

8. The automatic nail feed mechanism according to claim 6, wherein: The feeding head includes a support base and a feeding limiting component for limiting the number of feeding nails. The support base has a feeding port at the head position of the guide nail bar, and the feeding limiting component is disposed on the support base and located next to the feeding port.

9. The automatic nail feed mechanism according to claim 8, wherein: The nail feeding limiting assembly includes a spring, a sheath, and a pin. The bottom of the support base has a sheath cavity with an open top near the nail feeding port, and the side wall of the sheath cavity has an insertion hole. The sheath has a limiting opening with a diameter larger than that of the insertion hole. The sheath is movably placed inside the sheath cavity. The pin passes through the insertion hole and the limiting opening to connect to the sheath cavity. The pin limits the upward and downward sliding distance of the sheath. The spring is placed inside the sheath cavity, with one end of the spring abutting against the sheath and the other end abutting against the sheath cavity. The spring constitutes the reset mechanism of the sheath.

10. The automatic nail feed mechanism according to claim 9, wherein: The coil spring assembly includes a coil spring seat, a coil spring shaft, and a coil spring. The coil spring seat is connected to the feeding head, the coil spring shaft is mounted on the coil spring seat, the coil spring is sleeved on the coil spring shaft, the coil spring is connected to the pusher claw, and the front end of the sliding bar is detachably connected to the coil spring seat.

11. A nail gun comprising the removable nosepiece of claim 10, wherein: The device includes a pusher assembly, a gun body, an inspection cover, and bolts. The gun body includes a clamp for clamping the nails output from the guide rod into a ring shape, a gun body, and a handle. The gun body has a rear-open receiving cavity. The inspection cover has bolt holes. The bolts pass through the bolt holes to lock the gun body and close the receiving cavity. The clamps are disposed on the gun body and located in front of the gun body. The handle is connected to the gun body. The support base is locked to the gun body by bolts. The bolts pass through the through hole of the nail gun connection part and the bolt hole of the inspection cover to lock the gun body, thereby realizing the connection between the automatic nail feeding mechanism and the gun body. The gripper includes a left gripper and a right gripper, which are hinged together. The left gripper located in front of the hinge is the left gripper, and the left gripper located behind the hinge is the left handle. The right gripper located in front of the hinge is the right gripper, and the right gripper located behind the hinge is the right handle. A clamping cavity with a specific shape is formed between the left gripper and the right gripper. A push-pin area is formed between the left handle and the right handle, and the push-pin area is connected to the clamping cavity. The sheath extends into the push-pin area, and the bottom end of the sheath and the bottom of the push-pin area form a push-pin channel. The height of the push-pin channel changes with the rise and fall of the sheath. The height change range of the push-pin channel is less than the height of two nails. The nail feed port is connected to the push-pin area and is located behind the push-pin channel. The pusher assembly includes a cylinder, a piston rod, and a pusher plate. The cylinder is placed inside the receiving cavity. One end of the piston rod is connected to the cylinder in a transmission manner, and the other end of the piston rod extends out of the receiving cavity and is connected to the pusher plate. A roller for driving the gripper to move is provided at the connection between the pusher plate and the piston rod. The roller and pusher are placed in the pusher area of ​​the clamp. When the cylinder drives the piston rod to extend, the pusher extends with the piston rod, allowing the pusher to enter the pusher channel and extend towards the clamping cavity. At the same time, the roller extends with the piston rod, causing the left and right handles to open, causing the left and right clamps to close, so that the clamping cavity closes. When the cylinder drives the piston rod to retract, the pusher plate retracts along with the piston rod, leaving the pusher channel and moving away from the clamping cavity. At the same time, the roller retracts along with the piston rod, causing the left and right handles to close, thus opening the left and right clamping parts and opening the clamping cavity.

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