CN219170797U - Pneumatic steel nail rifle of sharp mouth - Google Patents

Abstract

The utility model relates to a sharp-nose pneumatic steel nail gun which comprises a gun body, a gun nose assembly and a trigger assembly, wherein a pneumatic component is arranged in the gun body, and the gun nose assembly is connected with a nail box assembly; the gun nozzle assembly comprises a gun head seat and a gun cover, the gun head seat is provided with a nail pushing groove, a gun needle is arranged in the nail pushing groove, and one end of the gun needle is linked with the pneumatic component and is slidably arranged in the nail pushing groove; the gun needle is provided with a plurality of groups of supporting bulges arranged along the axis of the gun needle; the gun cover is provided with a guide groove corresponding to the supporting bulge; when the gun needle slides in the nail pushing groove, the supporting bulge is slidably arranged in the guide groove. The gun cover is provided with a reinforcing rib; the utility model has the beneficial effects that: the pneumatic steel nail gun with the sharp nozzle is provided, and the strength of the gun cover is improved due to the improvement of the strength of the gun needle and the improvement of the movement stability; therefore, the gun nozzle assembly can be increased in size in the length direction, so that the gun nozzle assembly can extend into a deep groove of the matrix to perform nailing, and the gun needle is not easy to break.

Description

Pneumatic steel nail rifle of sharp mouth

Technical Field

The utility model relates to the technical field of air nail guns, in particular to a sharp-mouth pneumatic steel nail gun.

Background

The pneumatic nailing gun is also called a pneumatic nailing machine, is a common tool in the industries of building, decoration and the like at present, adopts compressed air as a power source, can instantly shoot nails into a substrate, and has the advantages of time and labor saving and high construction efficiency; for example, patent document with publication number CN206568098U discloses a pneumatic steel nail gun, which comprises a pneumatic component and a nail clamp component, wherein the pneumatic component comprises a shell, a valve switch and a pneumatic device are arranged on the shell, and the pneumatic device is a prior art and generally comprises a cylinder, a gun needle and the like; a connecting spanner handle is arranged on the shell below the valve switch, and the nail clamp part comprises a nail guide plate and a nail separating plate. The nail box is arranged on the nail separating plate, and the nail is shot by pushing the nail needle by utilizing the pressure difference between the cavities by utilizing the valve switch of the trigger handle and the pneumatic device. The safety piece is arranged in the trigger handle, one end of the safety piece is hinged between the tail ends of the two side plates of the trigger handle through a second pin shaft, the other end of the safety piece extends out of the front end of the trigger handle, and the trigger handle applies pressure to the valve switch through the safety piece to enable the valve switch to be opened; the guide plates on two sides are provided with a third pin shaft, one end of the safety piece extending out of the trigger handle is positioned above the third pin shaft, and the safety frame is fixed on the third pin shaft. The safety piece and the safety frame have the function of avoiding false fires. When the trigger is not in work, the third pin shaft is positioned at the lowest part of the vertical bar-shaped hole under the action of gravity, the safety piece is not extruded, and the valve switch is not triggered even if the trigger handle is pulled carelessly.

However, the above technical solution has the following problems:

firstly, the nail separating plate is connected with the nail box, the length of the nail separating plate which can extend into the groove is determined by the distance between the nail outlet of the nail separating plate and the nail box, if the nail separating plate is too short, the nail separating plate cannot extend into a base body provided with a deep groove, such as a U-shaped keel for nailing operation, because a gun needle strikes nails under the action of air pressure difference, the movement speed is high, the impact is large, only the sizes of the gun needle, the nail separating plate and the nail guiding plate are increased, the strength requirement on the gun needle for striking the nails is higher along with the increase of the size, and the instability of the gun needle movement is improved; and also put forward the higher strength requirement to the nail guide plate too; the existing gun needle structure and nail guide plate structure are difficult to bear impact, so that the gun needle is unstable in movement and is extremely easy to damage, and the service life is shortened;

second, the safety frame and the safety piece in the technical scheme need be located the bottommost of vertical bar hole under the action of gravity just can make the third round pin axle, do not extrude the safety piece, and when nailing the furred ceiling, the third round pin axle can be in the other end of vertical bar hole and can't guarantee the effect that the safety piece played avoiding the false hair under the action of gravity on the contrary, relies on gravity and can't automatic re-setting promptly, when nailing the furred ceiling, can't play fine effect that prevents the false hair, uses inadequately in a flexible way.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a sharp-nose pneumatic steel nail gun, wherein a gun needle is provided with a supporting bulge, a gun cover of a gun nozzle assembly is provided with a guide groove matched with the supporting bulge, and the end face of the gun cover far away from a gun head seat is provided with a reinforcing rib; in this way, the strength of the gun needle is improved, the movement stability is improved, and the strength of the gun cover is also improved; in actual design, the gun nozzle assembly can increase the dimension in the length direction, so that a steel nail gun with long gun nozzle and sharp nozzle design is produced, and is used for deep groove nailing, and the gun needle is not easy to break; the safety frame does not rely on gravity to reset automatically under reset spring effect, when nailing the furred ceiling, also can play fine effect that prevents the false hair, uses more safety and flexibility.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a pneumatic steel nail gun with a sharp nozzle comprises a gun body, a gun nozzle assembly arranged on the gun body, and a trigger assembly arranged on the gun body, wherein a pneumatic component controlled by the trigger assembly is arranged in the gun body, the gun nozzle assembly is provided with a nail pushing groove, and the gun nozzle assembly is connected with a nail box assembly for providing nails in the nail pushing groove; a gun needle is arranged in the nail pushing groove, and one end of the gun needle is linked with the pneumatic component and is slidably arranged in the nail pushing groove; the method is characterized in that: the gun needle is provided with a plurality of groups of supporting bulges arranged along the axis of the gun needle; the inner wall of the gun nozzle component is provided with a guide groove corresponding to the supporting bulge; when the gun needle slides in the nail pushing groove, the supporting bulge is slidably arranged in the guide groove; one end of the supporting bulge, which is far away from the pneumatic component, is provided with a first inclined plane; the opposite one side that sets up the support arch of rifle needle is equipped with the second inclined plane, and the second inclined plane sets up in the rifle needle one end that keeps away from pneumatic means.

By adopting the technical scheme, the support protrusions are arranged on the gun needle and distributed along the axis of the gun needle, and when the gun needle is impacted and has shearing force, the support protrusions and the gun needle body bear load together, so that the strength of the gun needle is enhanced, and the gun needle is not easy to deform or damage; the nail box component is connected with the gun nozzle component, nails are pushed into the nail pushing groove of the gun nozzle component, the gun needle slides in the nail pushing groove under the action of the pneumatic component so as to strike the nails, the guide groove arranged on the gun nozzle component is used for supporting the protrusion to move, the movement of the gun needle is further guided, the offset in the movement process of the gun needle is reduced, the movement stability of the gun needle is improved, and the service life of the gun needle is prolonged. Therefore, as the strength and the movement stability of the gun needle are improved, the gun nozzle assembly can be increased in the length direction during actual design, so that the steel nail gun with long gun nozzle and sharp nozzle design can be produced, and the gun needle can be stretched into a deep groove of a matrix for nailing, and is not easy to break. The first inclined plane arranged on the supporting bulge and the second inclined plane arranged on the gun needle are both far away from the pneumatic component, when the gun needle moves, air flow is guided by the first inclined plane and the second inclined plane to generate certain acting force on the gun needle, and the contact area between the second inclined plane and the air is larger than that of the first inclined plane because the width of the second inclined plane is smaller than that of the gun needle, and the air acts on the second inclined plane to lift one end of the gun needle, so that a certain gap exists between the gun needle and the nail pushing groove, and friction is reduced; the first inclined plane that sets up then can avoid the rifle needle one end to be raised the back support protruding and collide with the rifle lid, guarantees the smoothness nature of rifle needle motion, avoids the rifle needle to warp.

The above-mentioned pneumatic steel nail rifle of sharp mouth can further set up to: the gun nozzle assembly comprises a gun head seat arranged on the gun body and a gun cover detachably connected to the gun head seat, the guide groove is arranged on one surface of the gun cover facing the gun head seat, and the end surface of the gun cover far away from the gun head seat is provided with a reinforcing rib; the nail pushing groove is arranged on the gun head seat, the gun head seat is also provided with a nail inlet communicated with the nail pushing groove, and the nail box assembly is connected with the nail inlet.

By adopting the technical scheme, the gun head seat is provided with the nail pushing groove and the nail inlet, and the nail inlet is connected with the nail box assembly, so that the nail box assembly can send nails into the nail pushing groove through the nail inlet; the guide groove is arranged on the gun cover, so that the defect that the gun head seat is insufficient in strength due to the fact that too many notches are formed in the gun head seat is avoided, the reinforcing ribs are arranged on the gun cover, the strength of the gun cover is improved, and when the size of the gun nozzle assembly in the length direction is increased, the gun cover and the gun head seat can be guaranteed to have certain strength, and the gun cover and the gun head seat are prevented from deforming; the gun head seat and the gun cover are detachably connected, so that the gun cover can be conveniently replaced.

The above-mentioned pneumatic steel nail rifle of sharp mouth can further set up to: the trigger component comprises a trigger piece with one end hinged with the gun body and a valve switch arranged on the gun body; the safety assembly is connected between the gun nozzle assembly and the trigger assembly and comprises a safety frame, one end of the safety frame is connected with the gun nozzle assembly in a sliding way and extends out of the gun nozzle assembly, the other end of the safety frame is connected with a pin shaft, a strip-shaped hole is formed in the gun body, the pin shaft is movably arranged in the strip-shaped hole, a trigger piece is connected with a safety elastic piece, one end of the safety elastic piece is in swinging arrangement in linkage with the pin shaft, and the trigger piece applies pressure to the valve switch through the safety elastic piece so as to control the valve switch to be opened and closed; a reset spring is arranged between the safety frame and the gun body, a spring mounting hole is formed in the gun body, the safety frame is provided with a mounting portion corresponding to the spring mounting hole, the mounting portion comprises supporting protrusions, spring limiting grooves are formed in two ends of each supporting protrusion, and one end of the reset spring is sleeved on the periphery of each supporting protrusion and is arranged in each spring limiting groove.

By adopting the technical scheme, the safety frame can be automatically reset without depending on gravity; the reset spring is arranged between the safety frame and the gun body, when the safety frame pushes the base body to slide, the safety frame approaches the gun body to compress the reset spring, and the elastic force is released when the safety frame is far away from the base body reset spring to drive the safety frame to reset, so that automatic reset is realized without depending on gravity; the supporting bulge, the spring limiting groove and the spring mounting hole are arranged on the gun body, and are used for mounting the reset spring, so that the spring is prevented from loosening; the trigger piece is used for applying pressure to the valve switch through the safety elastic piece so as to control the opening and closing of the valve switch, when the safety frame does not push the base body to slide, the pin shaft at one end of the safety frame does not drive the safety elastic piece to swing, so that the trigger piece cannot apply pressure to the valve switch through the safety elastic piece, false triggering is avoided, and when the safety frame pushes the base body to slide, the pin shaft at one end of the safety frame pushes one end of the safety elastic piece to swing, and at the moment, the trigger piece is pressed down, and only the trigger piece can apply pressure to the valve switch through the trigger piece.

The above-mentioned pneumatic steel nail rifle of sharp mouth can further set up to: the reset spring is a conical spring and comprises a large end and a small end, the small end is connected with the supporting protrusion, and the large end is installed in the spring installation hole.

By adopting the technical scheme, the reset spring is a conical spring, the large end of the reset spring is arranged in the spring mounting hole of the gun body, the small end of the reset spring is connected with the supporting protrusion, and when the reset spring is stressed and deformed due to the movement of the safety frame, the conical spring is always stressed at the small end, so that the deformation stability of the reset spring is improved, and the reset spring is prevented from bending.

The above-mentioned pneumatic steel nail rifle of sharp mouth can further set up to: the nail box assembly is installed to the rifle mouth subassembly, and the nail box assembly is including the fixed cartridge clip of being connected with the rifle mouth subassembly, with fixed cartridge clip sliding connection's activity cartridge clip, the end cover of being connected with the activity cartridge clip, be equipped with between fixed cartridge clip and the activity cartridge clip and push away the nail subassembly, push away the nail subassembly including pushing away nail piece and pushing away nail spring, push away nail piece including pushing away nail portion, spacing portion, spring coupling portion, push away the one end that the nail piece is located spring coupling portion and be equipped with the reinforcing arch, push away nail spring one end and spring coupling portion and be connected, the other end and end cover butt.

By adopting the technical scheme, the nail pushing piece of the nail pushing assembly is additionally provided with the reinforcing protrusion so as to ensure the integral strength of the nail pushing piece, so that the spring connecting part can be reduced in size, and a larger deformation space is reserved for the nail pushing spring. When the nail is prevented in the nail box assembly, the movable clip is required to be pulled to be contacted with the limiting part of the nail pushing piece and driven to enable the nail pushing piece to extrude the nail pushing spring, so that nails can be placed in the fixed clip, then the movable clip is loosened, the nail pushing spring is reset, the nail pushing piece is pushed to press the nails, and the nails are fed into the nail inlet; one end of the nail pushing spring is connected with the spring connecting part, and the other end of the nail pushing spring is abutted with the end cover, namely the compression amount of the nail pushing spring is related to the space between the spring connecting part and the end cover; the greater the compression of the ejector spring, the greater the number of nails that can be placed. Because the nail pushing piece is additionally provided with the reinforcing protrusions, the spring connecting part is reduced in size, so that the compression amount of the nail pushing spring is increased, more nails can be placed, and the number of the nails which can be placed is increased when the space between the fixed clip and the movable clip is fixed.

The above-mentioned pneumatic steel nail rifle of sharp mouth can further set up to: the end cover is provided with a connecting plate which is bent and detachably connected with the movable cartridge clip; one side of the fixed cartridge clip is provided with a gland assembly, the gland assembly comprises a fixed seat, a gland hook is hinged on the fixed seat, and a limit sloping plate is arranged on the end cover corresponding to the gland hook.

By adopting the technical scheme, the gland assembly is used for compressing the end cover so as to prevent the movable clip from sliding, and the end cover is detachably connected with the movable clip through the connecting plate, so that the end cover is convenient to detach and replace. Particularly, the gland hook of the gland assembly is correspondingly matched with the limiting sloping plate of the end cover, and the limiting sloping plate can extend towards the gland hook, so that the gland hook and the end cover are stably matched, and the end cover is better compressed.

The beneficial effects of the utility model are as follows: the pneumatic steel nail gun with sharp nozzle includes support boss set on the gun needle, guide slot on the gun cover to match with the support boss, and reinforcing ribs on the end surface of the gun cover; in this way, the strength of the gun needle is improved, the movement stability is improved, and the strength of the gun cover is also improved; therefore, in actual design, the gun nozzle assembly can increase the dimension in the length direction, so that a steel nail gun with long gun nozzle and sharp nozzle design can be produced, and can be stretched into a deep groove of a matrix for nailing, and the gun needle is not easy to break; secondly, the safety frame that sets up can not rely on gravity automatic re-setting under reset spring effect, when nailing the furred ceiling, also can play fine effect that prevents the false hair, uses more safely in a flexible way.

The utility model is described in further detail below with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of an explosion structure of a gun nozzle assembly according to the present utility model;

FIG. 3 is a schematic view of the structure of the gun needle according to the present utility model;

FIG. 4 is a schematic view of the back structure of the gun cap of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 2A;

FIG. 6 is a schematic view of a part of the structure of a safety frame according to the present utility model;

FIG. 7 is a cross-sectional view of the present utility model;

FIG. 8 is an enlarged schematic view of the structure of FIG. 7B;

FIG. 9 is a schematic view of an exploded view of the magazine assembly of the present utility model;

FIG. 10 is a schematic view of a staple pusher according to the present utility model;

FIG. 11 is a schematic view of a prior art staple pusher;

fig. 12 is a schematic view of the structure of the end cap of the present utility model.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The sharp-nose pneumatic steel nail gun as shown in fig. 1 to 12 comprises a gun body 1, a gun nozzle assembly 2 arranged on the gun body 1, a nail box assembly 3 connected with the gun nozzle assembly 2, a trigger assembly 4 arranged on the gun body 1, and a pneumatic component 13 controlled by the trigger assembly 4 is arranged in the gun body 1; the gun nozzle assembly 2 comprises a gun head seat 21 arranged on the gun body 1 and a gun cover 22 detachably connected to the gun head seat 21, in the embodiment, the gun cover 22 is arranged on the gun head seat 21 through bolts, a nail pushing groove 211 is arranged on the gun head seat 21, a nail inlet 212 communicated with the nail pushing groove 211 is also arranged on the gun head seat 21, and the nail box assembly 3 is connected with the nail inlet 212;

as shown in fig. 2, a gun needle 23 is arranged in the nail pushing groove 211, and one end of the gun needle 23 is linked with the pneumatic component 13 and is slidably arranged in the nail pushing groove 211; as shown in fig. 3, the gun needle 23 is provided with a plurality of groups of supporting protrusions 231 arranged along the axis of the gun needle 23; when the gun needle 23 is impacted and shearing force exists, the supporting bulge 231 and the gun needle 23 body bear load together, and the strength of the gun needle 23 is enhanced. The end of the supporting protrusion 231 away from the pneumatic component 13 is provided with a first inclined surface 2311; the opposite side of the gun needle 23, which is provided with the supporting protrusion 231, is provided with a second inclined surface 232, and the second inclined surface 232 is arranged at one end of the gun needle 23, which is far away from the pneumatic component 13. The gas acts on the second inclined surface 232 to lift one end of the gun needle 23, so that a certain gap exists between the gun needle 23 and the nail pushing groove 211, and friction is reduced; the first inclined surface 2311 can prevent the supporting protrusion 231 from colliding with the gun cover 22 after one end of the gun needle 23 is lifted, so as to ensure the smoothness of the movement of the gun needle 23.

As shown in fig. 4, a guide groove 221 is provided on a surface of the gun cover 22 facing the gun mount 21, the guide groove 221 is provided corresponding to the supporting protrusion 231, and when the gun needle 23 slides in the push pin groove 211, the supporting protrusion 231 is slidably provided in the guide groove 221. Meanwhile, the end face of the gun cover 22 far away from the gun head seat 21 is provided with a reinforcing rib 222, so that the strength of the gun cover 22 is improved;

up to this point, the gun needle 23 is provided with a supporting bulge 231, the gun cover 22 of the gun nozzle assembly 2 is provided with a guide groove 221 matched with the supporting bulge 231, and the end surface of the gun cover 22 far away from the gun head seat 21 is provided with a reinforcing rib 222; as a result, the strength of the gun needle 23 itself is improved, and the movement stability is improved, so is the strength of the gun cover 22; therefore, in practical design, the gun nozzle assembly 2 can be increased in size in the length direction, so that a steel nail gun with long gun nozzle and sharp nozzle design can be produced, and the steel nail gun can be stretched into a deep groove of a matrix for nailing, and the gun needle 23 is not easy to break.

As shown in fig. 5 to 8, the trigger assembly 4 comprises a trigger piece 41 with one end hinged with the gun body 1 and a valve switch 42 arranged on the gun body 1; a safety component 5 is connected between the gun nozzle component 2 and the trigger component 4, the safety component 5 comprises a safety frame 51, one end of the safety frame 51 is in sliding connection with the gun nozzle component 2 and extends out of the gun nozzle component 2, the other end of the safety frame is connected with a pin shaft 52, a strip-shaped hole 11 is arranged on the gun body 1, the pin shaft 52 is movably arranged in the strip-shaped hole 11, a trigger piece 41 is connected with a safety spring piece 53, one end of the safety spring piece 53 swings in linkage with the pin shaft 52, and the trigger piece 41 applies pressure to the valve switch 42 through the safety spring piece 53 so as to control the opening and closing of the valve switch 42; when the safety frame 51 is not forced to slide, one end of the safety frame 51 does not push the safety spring plate 53 to swing, so that even if the trigger piece 41 is pulled, the trigger piece 41 cannot trigger the valve switch 42 through the safety spring plate 53, and the effect of preventing false firing is achieved.

A return spring 54 is provided between the safety frame 51 and the gun body 1, as shown in fig. 6. The gun body 1 is provided with a spring mounting hole 12, and the safety frame 51 is provided with a mounting part corresponding to the spring mounting hole 12. As shown in fig. 5, the mounting portion includes a supporting protrusion 511, two ends of the supporting protrusion 511 are provided with a spring limiting groove 512, and one end of a return spring 54 is sleeved on the periphery of the supporting protrusion 511 and is disposed in the spring limiting groove 512. The return spring 54 is a conical spring including a large end and a small end, the small end is connected with the supporting boss 511, and the large end is installed in the spring installation hole 12. The safety frame 51 can automatically reset under the action of the reset spring 54 without depending on gravity, and can play a good role in preventing false hair when nailing a suspended ceiling, so that the use is safer and more flexible.

As shown in fig. 9, the nail box assembly 3 comprises a fixed clip 31 connected with the gun nozzle assembly 2, a movable clip 32 slidingly connected with the fixed clip 31, and an end cover 33 connected with the movable clip 32, a nail pushing assembly is arranged between the fixed clip 31 and the movable clip 32, the nail pushing assembly comprises a nail pushing piece 34 and a nail pushing spring 37 (not shown in the drawing), the nail pushing piece 34 is shown in fig. 10, the nail pushing piece 34 comprises a nail pushing part 341, a limiting part 342 and a spring connecting part 343, one end of the nail pushing piece 34, which is positioned at the spring connecting part 343, is provided with a reinforcing protrusion 344, one end of the nail pushing spring 37 is connected with the spring connecting part 343, and the other end of the nail pushing spring 37 is abutted with the end cover 33. Compared with the structure of the ejector pin 34 in the prior art (as shown in fig. 11), the ejector pin 34 of the present utility model has the additional reinforcing protrusions 344, which increases the strength of the ejector pin 34, and the length of the spring connecting portion 343 is not required to be increased to ensure the strength of the ejector pin 34, so that the spring connecting portion 343 can be reduced in size, the compression amount of the ejector pin spring 37 is increased, and therefore, more nails can be placed, and the number of the nails that can be placed is increased when the space between the fixed clip 31 and the movable clip 32 is fixed. As shown in fig. 12, the end cover 33 is provided with a connecting plate 331, and the connecting plate 331 is bent and detachably connected with the movable clip 32; one side of the fixed clip 31 is provided with a gland assembly, the gland assembly comprises a fixed seat 35 with one end connected with the fixed clip 31, the fixed seat 35 is hinged with a gland hook 36 and a gland spring (not shown in the drawing), and the end cover 33 is provided with a limit sloping plate 332 corresponding to the gland hook 36.

The utility model works as follows:

loading nails into the magazine assembly 3 and feeding the nails into the nail pushing grooves 211 through the nail pushing assembly from the nail inlet 212 of the gun head 21 of the gun nozzle assembly 2; the gun nozzle assembly 2 is propped against the base body, one end of the safety frame 51 extends out of the gun nozzle assembly 2, at the moment, the safety frame 51 is pushed by the base body to extrude the reset spring 54, the pin shaft 52 at one end of the safety frame 51 pushes the safety spring piece 53 to swing, only when the trigger piece 41 is pulled, the trigger piece 41 applies pressure to the air valve switch 42 through the safety spring piece 53, the air valve switch 42 works to cooperate with the pneumatic component 13 arranged in the gun body 1 to drive the gun needle 23 to move by utilizing the pressure difference of each cavity in the gun body 1, and the gun needle 23 is limited by the supporting protrusion 231 and the guide groove 221 of the gun cover 22 when moving, so that the movement is stable, and finally nails are driven out of the gun nozzle assembly 2. When the gun nozzle assembly 2 is far away from the base body, the return spring 54 is restored, so that the safety frame 51 is automatically reset independent of gravity.

Claims (6)

1. The pneumatic steel nail gun with the sharp nozzle comprises a gun body, a gun nozzle assembly arranged on the gun body and a trigger assembly arranged on the gun body, wherein a pneumatic component controlled by the trigger assembly is arranged in the gun body, the gun nozzle assembly is provided with a nail pushing groove, and the gun nozzle assembly is connected with a nail box assembly for providing nails in the nail pushing groove; a gun needle is arranged in the nail pushing groove, and one end of the gun needle is linked with the pneumatic component and is slidably arranged in the nail pushing groove; the method is characterized in that: the gun needle is provided with a plurality of groups of supporting bulges arranged along the axis of the gun needle; the inner wall of the gun nozzle assembly is provided with a guide groove corresponding to the supporting protrusion; when the gun needle slides in the nail pushing groove, the supporting bulge is slidably arranged in the guide groove; a first inclined plane is arranged at one end of the supporting bulge far away from the pneumatic component; the gun needle is provided with a second inclined plane on one surface of the supporting protrusion, and the second inclined plane is arranged at one end of the gun needle far away from the pneumatic component.

2. A tip pneumatic steel nail gun as defined in claim 1, wherein: the gun nozzle assembly comprises a gun head seat arranged on the gun body and a gun cover detachably connected to the gun head seat, the guide groove is arranged on one surface of the gun cover facing the gun head seat, and the end surface of the gun cover far away from the gun head seat is provided with a reinforcing rib; the nail pushing groove is arranged on the gun head seat, the gun head seat is also provided with a nail inlet communicated with the nail pushing groove, and the nail box assembly is connected with the nail inlet.

3. A sharp-tipped pneumatic steel nail gun according to claim 1 or 2, characterized in that: the trigger component comprises a trigger piece with one end hinged with the gun body and a valve switch arranged on the gun body; the safety device comprises a gun nozzle assembly, a trigger piece, a safety frame, a pin shaft, a spring plate and a trigger piece, wherein the safety assembly is connected between the gun nozzle assembly and the trigger assembly and comprises the safety frame, one end of the safety frame is connected with the gun nozzle assembly in a sliding manner and extends out of the gun nozzle assembly, the other end of the safety frame is connected with the pin shaft, the gun body is provided with the bar-shaped hole, the pin shaft is movably arranged in the bar-shaped hole, the trigger piece is connected with the safety spring plate, one end of the safety spring plate is in linkage with the pin shaft and can swing, and the trigger piece applies pressure to a valve switch through the safety spring plate so as to control the opening and closing of the valve switch; the safety device comprises a gun body, and is characterized in that a reset spring is arranged between the safety frame and the gun body, a spring mounting hole is formed in the gun body, a mounting part is arranged on the safety frame corresponding to the spring mounting hole, the mounting part comprises a supporting bulge, spring limiting grooves are formed in two ends of the supporting bulge, and one end of the reset spring is sleeved on the periphery of the supporting bulge and is arranged in the spring limiting grooves.

4. A tip pneumatic steel nail gun according to claim 3, wherein: the reset spring is a conical spring and comprises a large end and a small end, the small end is connected with the supporting protrusion, and the large end is installed in the spring installation hole.

5. A sharp-tipped pneumatic steel nail gun according to claim 1 or 2, characterized in that: the nail box assembly is installed to the rifle mouth subassembly, the nail box assembly is including the fixed cartridge clip of being connected with the rifle mouth subassembly, with fixed cartridge clip sliding connection's activity cartridge clip, be equipped with between fixed cartridge clip and the activity cartridge clip and push away the nail subassembly, it is including pushing away nail spare and pushing away nail spring to push away the nail spare, it is including pushing away nail portion, spring coupling portion to push away nail spare, the one end that pushes away nail spare and lies in spring coupling portion is equipped with the strengthening arch.

6. A tip pneumatic steel nail gun as defined in claim 5, wherein: an end cover is arranged at one end of the movable clip, a connecting plate is arranged on the end cover, and the connecting plate is bent and detachably connected with the movable clip; the gland assembly is arranged on one side of the fixed cartridge clip and comprises a fixed seat, a gland hook is hinged to the fixed seat, and a limiting inclined plate is arranged on the end cover corresponding to the gland hook.

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