Double-clamping anti-flying nail chuck with hook and stud welding gun

Abstract

The embodiment of the utility model provides a double-clamping anti-flying nail chuck with a hook and a stud welding gun. The double-clamping anti-flying nail chuck comprises a chuck body, a locking nut and a driving assembly, the bottom of the chuck body is fixedly connected with the driving assembly through the locking nut. A plurality of clamping pieces are arranged on the chuck body, and the inner diameter of an upper port of each clamping piece is smaller than that of a lower port of each clamping piece, so that the clamping pieces form a conical necking structure; the plurality of clamping pieces comprise a plurality of first clamping pieces and a plurality of second clamping pieces, the plurality of first clamping pieces and the plurality of second clamping pieces are coaxially and mutually staggered, and the end surfaces of the upper ports of the plurality of first clamping pieces and the end surfaces of the upper ports of the plurality of second clamping pieces are positioned on different horizontal planes. According to the embodiment of the utility model, the chuck body is provided with the plurality of clamping pieces with the conical necking structures, the end faces of the upper ports of the clamping pieces are positioned on different horizontal planes, and meanwhile, the plurality of clamping pieces are coaxially arranged in a staggered manner, so that nail flying caused by insufficient clamping force of the chuck is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a double-clamping chuck with hooks to prevent flying nails and a stud welding gun. Background Art

[0002] In modern manufacturing, welding, as an indispensable core technology, is widely used in a variety of fields, including metal structures, construction, automotive manufacturing, shipbuilding, aerospace, and more. Ground bolts, a commonly used fastener in welding, play an important role in ensuring welding safety and improving welding quality.

[0003] Welding often involves clamping the grounding bolt, a process typically performed using a single-chuck clamping method. During welding, the grounding bolt experiences high-speed impact and significant inertia during feeding, which the single-chuck clamping method struggles to overcome. Consequently, the single-chuck clamping method often suffers from the problem of the chuck's clip not retracting in time and failing to securely clamp the grounding bolt. This not only causes the grounding bolt to pop out of the chuck, resulting in a flying bolt, but also significantly reduces the chuck's lifespan, impacting overall welding quality and efficiency. Summary of the Invention

[0004] The embodiment of the utility model provides a double-clamping hook anti-flying nail chuck and a stud welding gun, aiming to solve the problem in the prior art that the chuck cannot clamp the grounding bolt in time and firmly due to insufficient clamping force, thereby forming flying nails.

[0005] In the first aspect, an embodiment of the utility model provides a double-clamping anti-flying nail chuck with hooks, comprising a chuck body, a locking nut and a drive assembly; the bottom of the chuck body is fixedly connected to the drive assembly through the locking nut; a plurality of clips are arranged on the chuck body, and the inner diameter of the upper port of the plurality of clips is smaller than the inner diameter of the lower port so that the plurality of clips form a tapered necking structure; the plurality of clips include a plurality of first clips and a plurality of second clips, and the plurality of first clips and the plurality of second clips are coaxial and staggered with each other, and the upper port end faces of the plurality of first clips and the upper port end faces of the plurality of second clips are in different horizontal planes.

[0006] In some embodiments, the several first clips include a first clip body, an annular step and a protrusion; the upper end portion of the first clip body is inclined inward; the annular step and the protrusion are both arranged on the first clip body, and the annular step and the protrusion are both located on the inner side wall adjacent to the upper port of the first clip body, wherein the annular step is located between the upper port end face of the first clip body and the upper port end faces of the several second clips; the protrusion is located between the upper port end face of the first clip body and the annular step, and is parallel to the annular step.

[0007] In some embodiments, the driving assembly includes a driving cylinder and a receiver; the receiver is coaxially arranged with the driving cylinder; one end of the receiver is fixedly connected to the bottom of the driving cylinder, and the other end of the receiver is connected to the bottom of the chuck body through the locking nut.

[0008] In some embodiments, the driving cylinder includes a driving cylinder body, a cylinder cavity, and an air intake assembly; the space formed inside the cylinder body is the cylinder cavity; and the air intake assembly is arranged on the driving cylinder body.

[0009] In some embodiments, the air intake assembly includes an air inlet and an air intake channel; the air inlet and the air intake channel are both arranged on the driving cylinder body, wherein the air inlet is located on the side wall near the top of the driving cylinder body; one end of the air intake channel is adapted to the air inlet, and the other end of the air intake channel is connected to the cylinder cavity.

[0010] In some embodiments, the receiver includes a receiver body, a receiver cavity, and a receiving component; the space formed inside the receiver body is the receiver cavity; and the receiving component is disposed on the receiver body.

[0011] In some embodiments, the receiving component includes a receiving hole and a receiving pipe; the receiving hole is arranged on the receiver body; and one end of the receiving pipe is adapted to the receiving hole.

[0012] In some embodiments, the drive assembly further comprises a piston rod; the piston rod is disposed in the cylinder cavity and adapted to the cylinder cavity; the piston rod is driven by gas to move between the cylinder cavity and the receiver cavity.

[0013] In some embodiments, the vertical distance between the upper port end faces of the several first clips and the bottom of the chuck body belongs to a first preset distance; the vertical distance between the upper port end faces of the several second clips and the bottom of the chuck body belongs to a second preset distance; the first preset distance is greater than the second preset distance.

[0014] In a second aspect, an embodiment of the present invention further provides a stud welding gun, which includes a double-clamping hook-type anti-flying nail chuck as described in any of the aforementioned embodiments.

[0015] The present invention provides a double-clamping hook-type anti-flying nail chuck and a stud welding gun, which includes a chuck body, a locking nut, and a drive assembly; the bottom of the chuck body is fixedly connected to the drive assembly through the locking nut; the chuck body is provided with a plurality of clips, the inner diameter of the upper port of the plurality of clips is smaller than the inner diameter of the lower port so that the plurality of clips form a tapered necking structure; the plurality of clips include a plurality of first clips and a plurality of second clips, the plurality of first clips and the plurality of second clips are coaxial and mutually staggered, and the upper port end faces of the plurality of first clips and the upper port end faces of the plurality of second clips are at different horizontal planes. In the embodiment of the present invention, the chuck body is provided with a plurality of clips with a tapered necking structure and the end faces of the upper ports are at different horizontal planes. At the same time, the plurality of clips are coaxial and mutually staggered to prevent the chuck from causing flying nails due to insufficient clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a double-clamping hook-type anti-flying nail chuck and a stud welding gun provided in an embodiment of the present invention;

[0018] Figure 2 A schematic cross-sectional view of a double-clamping hook-type anti-flying nail chuck and a stud welding gun provided in an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of a double-clamping chuck with hooks to prevent flying nails and a chuck body of a stud welding gun provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the main structure of a double-clamping hook anti-flying nail chuck and a stud welding gun provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0023] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0024] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0025] See also Figures 1 to 4 , Figure 1 A schematic structural diagram of a double-clamping hook-type anti-flying nail chuck and a stud welding gun provided in an embodiment of the present invention; Figure 2 A schematic cross-sectional view of a double-clamping hook-type anti-flying nail chuck and a stud welding gun provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a double-clamping chuck with hooks to prevent flying nails and a chuck body of a stud welding gun provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the main structure of a double-clamping hook anti-flying nail chuck and a stud welding gun provided in an embodiment of the utility model.

[0026] See again Figure 1 、 Figure 3 as well as Figure 4The double-clamping anti-flying nail chuck with hook provided by an embodiment of the present invention includes a chuck body 100, a locking nut 200 and a driving assembly 300; the bottom of the chuck body 100 is fixedly connected to the driving assembly 300 through the locking nut 200; a plurality of clips 110 are provided on the chuck body 100, and the inner diameter of the upper port of the plurality of clips 110 is smaller than the inner diameter of the lower port so that the plurality of clips 110 form a tapered necking structure; the plurality of clips 110 include a plurality of first clips 111 and a plurality of second clips 112, and the plurality of first clips 111 and the plurality of second clips 112 are coaxial and staggered with each other, and the upper port end faces of the plurality of first clips 111 and the upper port end faces of the plurality of second clips 112 are in different horizontal planes.

[0027] In this embodiment, the chuck body 100 is provided with a plurality of clips 110. The inner diameter of the upper end of each of the clips 110 is smaller than the inner diameter of the lower end, resulting in a tapered structure for the clips 110. This tapered structure allows the clips 110 to more closely conform to the cylindrical surface of the grounding bolt when subjected to external forces. This design utilizes the wedge principle: when the grounding bolt enters the tapered opening formed by the clips 110 on the chuck, the clips 110 are subjected to an inward squeezing force due to the gradually decreasing angle, thereby enhancing the clamping force on the grounding bolt and, to a certain extent, strengthening the grounding bolt's clamping strength during the welding process.

[0028] The plurality of clips 110 include a plurality of first clips 111 and a plurality of second clips 112. The number of first clips 111 is equal to the number of second clips 112, and the first clips 111 and the second clips 112 are symmetrically arranged. The first clips 111 and the second clips 112, whose upper end surfaces are at different horizontal planes, are coaxial and offset relative to each other. When the grounding screw is driven into the chuck body 100 by the drive assembly 300, the inner wall of the chuck body 100 expands under the pressure of the grounding screw. At this time, because the upper end surfaces of the first clips 111 and the second clips 112 are at different horizontal planes and the first clips 111 and the second clips 112 are coaxial and offset relative to each other, the second clips 112 and the first clips 111 can successively contact the cylindrical surface of the grounding screw and provide a clamping force thereto, thereby facilitating the grounding screw to be clamped during the welding process.

[0029] Specifically, the number of clips 110 is described using eight as an example. If the number of clips 110 on the chuck body 100 is eight, then the number of first clips 111 is four, and the number of second clips 112 is also four. The first clips 111 and the second clips 112 are coaxial and staggered, and the upper ends of the clips 110 have a tapered necking structure. When the grounding screw is driven into the chuck body 100 by the driving assembly 300, the inner wall of the chuck body 100 expands under the pressure of the grounding screw. Due to the special arrangement of the first and second clips 111, 112, and the fact that the upper end surfaces of the first and second clips 111, 112 are at different horizontal planes, the second clip 112 and the first clip 111 can successively contact the cylindrical surface of the grounding screw and provide a clamping force thereto, thereby maintaining the grounding screw in a tight position during the welding process.

[0030] In one embodiment, if Figure 3 As shown, the several first clips 111 include a first clip body 1111, an annular step 1112 and a protrusion 1113; the upper end of the first clip body 1111 is inclined inward; the annular step 1112 and the protrusion 1113 are both arranged on the first clip body 1111, and the annular step 1112 and the protrusion 1113 are both located on the inner side wall adjacent to the upper port of the first clip body 1111, wherein the annular step 1112 is located between the upper port end face of the first clip body 1111 and the upper port end faces of the several second clips 112.

[0031] In this embodiment, when the grounding bolt moves outward from the clip 110 due to inertia during welding, the upper end of the first clip body 1111 is tilted inward at a certain angle, providing inward resistance to the grounding bolt. Simultaneously, the annular step 1112 provided on the inner sidewall of the first clip body 1111 fully contacts the surface of the grounding bolt, also providing inward resistance to the grounding bolt. Therefore, the combined effect of these two factors can enhance the clamping force of the clip 110 on the grounding bolt, effectively preventing flying nails from the grounding bolt.

[0032] In one embodiment, if Figure 3 As shown, the protrusion 1113 is located between the upper end surface of the first clip body 1111 and the annular step 1112 , and is parallel to the annular step 1112 .

[0033] Specifically, a protrusion 1113 and an annular step 1112 are provided on the inner wall of the first clip body 1111. When the grounding bolt moves outward from the clip 110 due to inertia during welding, the area formed between the protrusion 1113 and the annular step 1112 can fully contact the cylindrical surface of the grounding bolt to clamp and fix it, thereby providing a certain clamping force to prevent it from flying.

[0034] In one embodiment, if Figure 1 、 Figure 2 as well as Figure 4 As shown, the driving assembly 300 includes a driving cylinder 310 and a receiver 320; the receiver 320 is coaxially arranged with the driving cylinder 310; one end of the receiver 320 is fixedly connected to the bottom of the driving cylinder 310, and the other end of the receiver 320 is connected to the bottom of the chuck body 100 through the locking nut 200.

[0035] In this embodiment, the top of the receiver 320 is fixedly connected to the bottom of the driving cylinder 310, and the bottom of the receiver 320 is connected to the bottom of the chuck body 100 via a locking nut 200. The coaxial arrangement of the receiver 320 and the driving cylinder 310 allows the receiver cavity 322 to be aligned with the cylinder cavity 312, thereby ensuring that the piston rod 330 can move between the cylinder cavity 312 and the receiver cavity 322 under the drive of the gas, so that the grounding bolt can be smoothly pushed from the receiver 320 into the chuck, thereby facilitating the subsequent welding process.

[0036] Specifically, after the grounding bolt enters the receiver 320, the piston rod 330 in the driving cylinder 310, driven by the gas, continues to push the grounding bolt forward. The grounding bolt first contacts the inner wall of the chuck body 100. The elasticity of the inner wall of the chuck body 100 helps guide the grounding bolt in the correct position. Thereafter, the piston rod 330 continues to push the grounding bolt forward. The inner wall of the chuck body 100 expands under the pressure of the grounding bolt. The offset design between the second clamping piece 112 and the first clamping piece 111 sequentially provides clamping force to the cylindrical surface of the grounding bolt.

[0037] At the same time, when the grounding bolt is pushed outward (out of the upper end of the clip 110), the annular step 1112 at the front end of the inner wall of the first clip body 1111 and the hook-shaped design at the upper end of the first clip body 1111, which is tilted inward at a certain angle, together provide a reverse inward resistance to the grounding bolt, ensuring that the grounding bolt can be accurately pressed into the inner wall of the chuck body 100. The above-mentioned design can effectively prevent the grounding bolt from flying out of the chuck body 100 due to the failure of the chuck to retract in time after opening and the insufficient clamping force of the clip 110 when the piston rod 330 pushes the grounding bolt out of the upper end of the clip 110.

[0038] In addition, after the grounding bolt is pushed out of the upper end of the clip 110 by the piston rod 330, the staggered design between the first clip 111 and the second clip 112 on the chuck body 100 can also provide clamping force for the grounding bolt, thereby ensuring that during the welding process, the welding quality and welding efficiency will not be affected by the deviation of the angle of the grounding bolt.

[0039] In one embodiment, if Figure 2 As shown, the driving cylinder 310 includes a driving cylinder body 311 , a cylinder cavity 312 and an air intake assembly; the space formed inside the cylinder body is the cylinder cavity 312 ; and the air intake assembly is arranged on the driving cylinder body 311 .

[0040] In specific implementation, the air intake assembly includes an air inlet and an air intake channel; the air inlet and the air intake channel are both arranged on the driving cylinder body 311, wherein the air inlet is located on the side wall near the top of the driving cylinder body 311; one end of the air intake channel is adapted to the air inlet, and the other end of the air intake channel is connected to the cylinder inner cavity 312.

[0041] In this embodiment, a solenoid valve (not shown) is installed within the driving cylinder body 311. Under the control of the solenoid valve, gas enters through an air inlet (not shown) and enters the cylinder cavity 312 through an air inlet passage (not shown). In the initial state, the head of the piston rod 330 is located at the top side of the driving cylinder body 311, and the tail of the piston rod 330 is located at the bottom side of the driving cylinder body 311. Under the action of the gas entering the cylinder cavity 312, the piston rod 330 continuously moves toward the receiver 320 end, into the receiver cavity 322, and abuts against the grounding bolt in the receiver cavity 322. Driven by the gas, the tail of the piston rod 330 abuts against the grounding bolt, pushing the grounding bolt toward the inner wall of the chuck body 100. Due to the elasticity of the inner wall of the chuck body 100, the grounding bolt can be guided into position. When the grounding bolt is pushed by the piston rod 330 and moves to the upper end of the clip 110, the clip 110 will open due to the squeezing force of the grounding bolt. At this time, the second clip 112 and the first clip 111, which are staggered and have the upper end faces at different levels, can successively contact the surface of the grounding bolt and provide clamping force thereto. At the same time, the steps and the upper end portion arranged on the first clip body 1111 are inclined inward at a certain angle to provide a reverse resistance to the grounding bolt when it is pushed out of the clip 110, so as to avoid the clip 110 from retracting in time and having insufficient clamping force, which may cause the grounding bolt to fly.

[0042] The drive cylinder body 311 is equipped with an airway (not shown) and a valve (not shown). When the grounding bolt is pushed by the piston rod 330 and moves to the upper end of the clamp 110, the head of the piston rod 330 is located at the bottom side of the drive cylinder body 311, and the tail of the piston rod 330 is located in the receiver cavity 322, near the clamping head. The airway is embedded in the drive cylinder body 311 and is adjacent to the cylinder cavity 312. The valve is a switch connecting the cylinder cavity 312 and the airway. It is located on the bottom inner wall of the drive cylinder body 311 and is used to exhaust gas from the cylinder cavity 312. In the initial state, the valve is closed and no gas is discharged from the airway. When the head of the piston rod 330 is located on the bottom side of the driving cylinder body 311, the head of the piston rod 330 contacts the valve. At this time, the valve opens, and the gas in the cylinder cavity 312 is discharged from the airway. As the gas in the cylinder cavity 312 decreases, the pressure in the space between the head of the piston rod 330 and the top of the driving cylinder body 311 is lower than the pressure in the space between the head of the piston rod 330 and the receiver cavity 322. Therefore, the piston rod 330 moves toward the top side of the driving cylinder body 311. During the process of moving toward the top side of the driving cylinder body 311, the head of the piston rod 330 contacts the valve again. At this time, the valve closes, and the gas in the cylinder cavity 312 stops being discharged from the airway.

[0043] In one embodiment, if Figure 4 As shown, the receiver 320 includes a receiver body 321 , a receiver inner cavity 322 and a receiving assembly; the space formed inside the receiver body 321 is the receiver inner cavity 322 ; and the receiving assembly is arranged on the receiver body 321 .

[0044] In a specific implementation, the receiving component includes a receiving hole (not shown in the figure) and a receiving pipe (not shown in the figure); the receiving hole is provided on the receiver body 321; one end of the receiving pipe is adapted to the receiving hole.

[0045] In this embodiment, a receiving pipe is used to deliver the grounding bolt into the receiver cavity 322. Specifically, the output end of the receiving pipe is adapted to fit within the receiving hole. The grounding bolt is inserted through the input port of the receiving pipe, passes through the channel of the receiving pipe, and then enters the receiver cavity 322 through the output port. Controlled by a solenoid valve, gas enters the cylinder cavity 312, driving the piston rod 330 toward the receiver cavity 322. When the tail end of the piston rod 330 reaches the receiver 320, it abuts against the grounding bolt, pushing it toward the inner wall of the chuck body 100. The precise fit between the receiving pipe and the receiving hole ensures that the grounding bolt enters the receiver cavity 322 accurately. Furthermore, the piston rod 330 moves under the force of gas, which can be precisely controlled by the solenoid valve. This allows the force and speed of the piston rod 330 to be adjusted as needed, thus preventing damage to the grounding bolt or the receiver 320.

[0046] In one embodiment, if Figure 2 As shown, the drive assembly 300 further includes a piston rod 330 ; the piston rod 330 is disposed in the cylinder cavity 312 and is adapted to the cylinder cavity 312 ; the piston rod 330 is driven by gas to move between the cylinder cavity 312 and the receiver cavity 322 .

[0047] In this embodiment, in its initial state, the piston rod 330 is located in the cylinder cavity 312. Specifically, the head of the piston rod 330 is located at the top side of the driving cylinder body 311, and the tail of the piston rod 330 is located at the bottom side of the driving cylinder body 311. Driven by the gas, the piston rod 330 moves toward the receiver cavity 322, abutting against the grounding bolt in the receiver cavity 322 and pushing it into the inner wall of the chuck body 100. When the grounding bolt is pushed out of the chuck by the tail of the piston rod 330, the head of the piston rod 330 is located at the bottom side of the driving cylinder body 311, and the tail of the piston rod 330 is located at the bottom side of the receiver body 321.

[0048] Because a solenoid valve is installed within the drive cylinder body 311, gas is fed into the cylinder cavity 312 under the control of the solenoid valve, and the piston rod 330 is driven by the gas to move. This gas-driven movement of the piston rod 330, on the one hand, quickly and efficiently converts the pressure energy of the gas into mechanical energy of the piston rod 330, enabling the piston rod 330 to respond and move quickly, thereby efficiently performing the task of pushing the grounding bolt. On the other hand, by precisely controlling the amount and speed of gas entering, the movement speed and position of the piston rod 330 can be precisely controlled to meet the high-precision requirements of the welding process.

[0049] In one embodiment, if Figure 1 、 Figure 3 as well as Figure 4 As shown, the vertical distance between the upper port end faces of the several first clips 111 and the bottom of the chuck body 100 belongs to the first preset distance; the vertical distance between the upper port end faces of the several second clips 112 and the bottom of the chuck body 100 belongs to the second preset distance; the first preset distance is greater than the second preset distance.

[0050] In this embodiment, the vertical distance between the upper end surface of the first clip 111 and the bottom end surface of the chuck body 100 is greater than the vertical distance between the upper end surface of the second clip 112 and the bottom end surface of the chuck body 100. In other words, the length of the first clip 111 is longer than the length of the second clip 112. By staggering the long and short clips, the short clip first clamps the cylindrical surface of the grounding bolt, and the long clip then provides clamping force for the grounding bolt. This dual clamping of the long and short clips strengthens the grip on the grounding bolt, preventing grounding bolt flying caused by insufficient clamping force of the clip 110 and untimely retraction of the clip 110.

[0051] An embodiment of the present invention further provides a stud welding gun, which includes a double-clamping chuck with hooks to prevent flying nails as in any of the aforementioned embodiments.

[0052] In this embodiment, a double-grip, hook-type, anti-flying nail chuck is used in a stud welding gun for welding workpieces such as automobile frames. Specifically, a chuck body 100 is provided with a plurality of clips 110. The inner diameter of the upper end of each of these clips 110 is smaller than the inner diameter of the lower end, resulting in a tapered structure for each clip 110. This tapered structure allows the clips 110 to more closely adhere to the cylindrical surface of the grounding bolt when subjected to external forces.

[0053] The plurality of clips 110 include a plurality of first clips 111 and a plurality of second clips 112. The number of first clips 111 is equal to the number of second clips 112, and the first clips 111 and the second clips 112 are symmetrically arranged. The first clips 111 and the second clips 112, whose upper end surfaces are at different horizontal planes, are coaxial and offset from each other. When the grounding screw is driven into the chuck body 100 by the drive assembly 300, the inner wall of the chuck body 100 opens under the pressure of the grounding screw. At this time, because the upper end surfaces of the first clips 111 and the second clips 112 are at different horizontal planes and the first clips 111 and the second clips 112 are coaxial and offset from each other, the second clips 112 and the first clips 111 can successively contact the cylindrical surface of the grounding screw and provide a clamping force thereto, thereby facilitating the grounding screw to be clamped during the welding process.

[0054] An embodiment of the present utility model provides a double-clamping hook-type anti-flying nail chuck and a stud welding gun, which include a chuck body 100, a locking nut 200 and a drive assembly 300; the bottom of the chuck body 100 is fixedly connected to the drive assembly 300 through the locking nut 200; a plurality of clips 110 are provided on the chuck body 100, and the inner diameter of the upper port of the plurality of clips 110 is smaller than the inner diameter of the lower port so that the plurality of clips 110 form a tapered necking structure; the plurality of clips 110 include a plurality of first clips 111 and a plurality of second clips 112, the plurality of first clips 111 and the plurality of second clips 112 are coaxial and staggered with each other, and the upper port end faces of the plurality of first clips 111 and the upper port end faces of the plurality of second clips 112 are in different horizontal planes.

[0055] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A double-clamping hook anti-flying nail chuck, characterized in that: It includes a chuck body, a locking nut and a drive assembly; the bottom of the chuck body is fixedly connected to the drive assembly through the locking nut; a plurality of clips are provided on the chuck body, and the inner diameter of the upper port of the plurality of clips is smaller than the inner diameter of the lower port so that the plurality of clips form a tapered necking structure; the plurality of clips include a plurality of first clips and a plurality of second clips, the plurality of first clips and the plurality of second clips are coaxial and staggered with each other, and the upper port end faces of the plurality of first clips and the upper port end faces of the plurality of second clips are in different horizontal planes.

2. The double-clamping hook anti-flying nail chuck according to claim 1 is characterized in that: The several first clips include a first clip body, an annular step and a protrusion; the upper end of the first clip body is inclined inward; the annular step and the protrusion are both arranged on the first clip body, and the annular step and the protrusion are both located on the inner side wall adjacent to the upper port of the first clip body, wherein the annular step is located between the upper port end face of the first clip body and the upper port end faces of the several second clips; the protrusion is located between the upper port end face of the first clip body and the annular step, and is parallel to the annular step.

3. The double-clamping hook anti-flying nail chuck according to claim 1 is characterized in that: The driving assembly includes a driving cylinder and a receiver; the receiver is coaxially arranged with the driving cylinder; one end of the receiver is fixedly connected to the bottom of the driving cylinder, and the other end of the receiver is connected to the bottom of the chuck body through the locking nut.

4. The double-clamping hook anti-flying nail chuck according to claim 3 is characterized in that: The driving cylinder includes a driving cylinder body, a cylinder cavity and an air intake assembly; the space formed inside the cylinder body is the cylinder cavity; and the air intake assembly is arranged on the driving cylinder body.

5. The double-clamping hook anti-flying nail chuck according to claim 4 is characterized in that: The air intake assembly includes an air inlet and an air intake channel; the air inlet and the air intake channel are both arranged on the driving cylinder body, wherein the air inlet is located on the side wall near the top of the driving cylinder body; one end of the air intake channel is adapted to the air inlet, and the other end of the air intake channel is connected to the cylinder cavity.

6. The double-clamping hook anti-flying nail chuck according to claim 5, characterized in that: The receiver includes a receiver body, a receiver inner cavity, and a receiving assembly; the space formed inside the receiver body is the receiver inner cavity; and the receiving assembly is arranged on the receiver body.

7. The double-clamping hook anti-flying nail chuck according to claim 6, characterized in that: The receiving component includes a receiving hole and a receiving pipe; the receiving hole is arranged on the receiver body; one end of the receiving pipe is adapted to the receiving hole.

8. The double-clamping hook anti-flying nail chuck according to claim 6, characterized in that: The driving assembly further includes a piston rod; the piston rod is disposed in the cylinder inner cavity and adapted to the cylinder inner cavity; the piston rod is driven by gas to move between the cylinder inner cavity and the receiver inner cavity.

9. The double-clamping hook anti-flying nail chuck according to claim 1, characterized in that: The vertical distance between the upper port end faces of the several first clips and the bottom of the chuck body belongs to the first preset distance; the vertical distance between the upper port end faces of the several second clips and the bottom of the chuck body belongs to the second preset distance; the first preset distance is greater than the second preset distance.

10. A stud welding gun, characterized in that: It comprises the double-clamping anti-flying nail chuck with hooks as described in any one of claims 1 to 9.

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