Pneumatic nail gun dust removal device

Abstract

The present invention relates to a pneumatic nail gun dust removal device, comprising: a gun body, a striker and a floating valve assembly, wherein the striker is slidably mounted on the gun body, the end of the striker corresponds to the clamping opening, and the tail of the striker is connected to the piston, and is characterized in that: a dust blowing hole is provided on the striker, the air inlet at one end of the dust blowing hole is located in the middle section of the striker, the position of the air inlet corresponds to the piston C cavity, the air outlet at one end of the dust blowing hole is located at the front end of the striker, and the air blowing position of the air outlet corresponds to the movable component inside the gun body. The present invention has a simple structure and is easy to modify, and utilizes the reversing exhaust function of the pneumatic nail gun to quickly clean the working components of the pneumatic nail gun.

Description

Technical Field

[0001] The invention relates to a pneumatic nail gun component, in particular to a pneumatic nail gun dust removal device. Background Art

[0002] Pneumatic nail guns are also called pneumatic nailing machines. Pneumatic nail guns use the air pressure generated by an air pump (air compressor), small gun air pressure [4-6.5Kg / c㎡ (Bar)], large nail gun air pressure [5-8Kg / c㎡ (Bar)] as the power source. The high-pressure gas drives the firing pin in the nail gun cylinder to do hammering motion, nailing the nails in the nail clip into the object or firing the nails out. The nails used in this pneumatic nail gun are collectively called pneumatic gun nails.

[0003] During the long-term use of a pneumatic nail gun, a certain amount of dust or processing material debris will accumulate inside the pneumatic nail gun. After accumulating to a certain extent, the flexibility of the internal moving parts of the pneumatic nail gun will be affected to a certain extent, and even jamming failures may occur. Operators generally use an external air gun to apply high-pressure air to the internal moving components of the pneumatic nail gun to blow away dust and debris inside the pneumatic nail gun, thereby ensuring the flexibility of the pneumatic nail gun and extending the service life of the pneumatic nail gun. However, regular cleaning operations will affect the daily use efficiency, especially when the pneumatic nail gun is in a relatively harsh production environment. The dust and impurities accumulate faster, and the user needs to clean it frequently, which seriously affects the production efficiency.

[0004] In view of this problem, a technical solution has been proposed in the pneumatic nail gun industry to add an air blowing pipe to blow air inside the pneumatic nail gun. Although this technical solution can also achieve the effect of cleaning the inside of the pneumatic nail gun, it requires a more complicated modification of the pneumatic nail gun, and the production and assembly are more troublesome. Summary of the invention

[0005] The purpose of the present invention is to provide a pneumatic nail gun dust removal device which has a simple structure and is easy to modify and utilizes the reversing exhaust function of the pneumatic nail gun to quickly clean the working components of the pneumatic nail gun.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a pneumatic nail gun dust removal device, comprising: a gun body, a firing pin and a floating valve assembly, the firing pin is slidably installed on the gun body, the end of the firing pin corresponds to the clamping mouth, and the tail of the firing pin is connected to the piston, and it is characterized in that: a dust blowing hole is provided on the firing pin, the air inlet at one end of the dust blowing hole is located in the middle section of the firing pin, the position of the air inlet corresponds to the piston C cavity, the air outlet at one end of the dust blowing hole is located at the front end of the firing pin, and the blowing position of the air outlet corresponds to the movable component in the gun body.

[0007] Preferably, the air inlet on the dust blowing hole is located in the middle part of the striker near the front end, and its position is related to the opening and closing range of the clamping mouth.

[0008] Preferably, a sealing ring is provided on the sliding fitting surface between the firing pin and the gun body.

[0009] Preferably, the dust blowing hole passes through the air inlet and the air outlet along the axis of the striker.

[0010] Beneficial Effects

[0011] The structure of the present invention adopts the method of adding a through hole on the firing pin to connect the front cavity of the piston cavity, using the high-pressure air in the front cavity of the piston cavity to blow and dust the working components of the pneumatic nail gun, and at the same time, by setting the air inlet position of the dust blowing hole on the firing pin to enter the piston cavity, the pneumatic nail gun is controlled not to produce a blowing operation under normal working conditions, thereby preventing the possible pressure loss problem of the pneumatic nail gun when working. The present invention has a simple structure and is easy to modify. It uses the reversing exhaust function of the pneumatic nail gun to quickly clean the working components of the pneumatic nail gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention in the blowing state.

[0013] Figure 2 It is a schematic diagram of the structure of the present invention in a state to be clamped.

[0014] Figure 3 It is a schematic diagram of the structure of the present invention during the clamping process.

[0015] In the figure: 1. gun body; 11. A chamber; 12. B chamber; 13. C chamber; 14. D chamber; 2. firing pin; 3. floating valve assembly; 4. clamping jaws; 5. piston; 6. dust blowing hole; 61. air inlet; 62. air outlet; 7. sealing ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] The implementation of the present invention is described in detail below with reference to specific drawings and embodiments.

[0018] A dust removal device for a pneumatic nail gun comprises: a gun body 1, a firing pin 2 and a floating valve assembly 3, wherein the firing pin 2 is slidably mounted on the gun body 1, the end of the firing pin 2 corresponds to the clamp opening 4, and the tail of the firing pin 2 is connected to the piston 5, and is characterized in that: a dust blowing hole 6 is provided on the firing pin 2, an air inlet 61 at one end of the dust blowing hole 6 is located in the middle section of the firing pin 2, the position of the air inlet 61 corresponds to the piston C cavity 13, an air outlet 62 at one end of the dust blowing hole 6 is located at the front end of the firing pin 2, and the blowing position of the air outlet 62 corresponds to the movable component in the gun body 1.

[0019] Preferably, the air inlet 61 on the dust blowing hole 6 is located in the middle part of the striker 2 near the front end, and its position is associated with the opening and closing range of the clamping mouth 4.

[0020] Preferably, a sealing ring 7 is provided on the sliding fitting surface between the firing pin 2 and the gun body 1 .

[0021] Preferably, the dust blowing hole 6 passes through the air inlet 61 and the air outlet 62 along the axis of the striker 2 . Example

[0022] like Figure 1 As shown, the pneumatic nail gun is in an unloaded state, and the clamping jaws do not clamp a C-type nail or other object. The operator pulls the trigger to overcome the spring force to press the floating valve assembly 3 backward, connecting the A chamber 11 and the C chamber 13 while connecting the B chamber 12 and the D chamber 14. At this time, high-pressure air enters from the A chamber 11 and enters the C chamber 13 through the connecting pipe, and the high-pressure air in the B chamber 12 is discharged through the D chamber 14. Due to the pressure difference, the piston 5 pulls the firing pin 2 backward. At this time, the air inlet 61 retreats a distance beyond the sealing ring 7, retreats to one side of the C chamber 13 and is connected to the C chamber 13. The high-pressure air inside the C chamber 13 enters the dust blowing hole 6 through the air inlet 61, and blows and cleans the movable components in the gun body 1 through the air outlet 62.

[0023] like Figure 2 As shown, the pneumatic nail gun is in the waiting clamping state: the C-shaped nail at the muzzle of the pneumatic nail gun is in the waiting clamping state. Without pulling the trigger, the spring pushes the floating valve assembly 3 forward, connecting the A chamber 11 and the B chamber 12 while closing the D chamber 14. At this time, the pneumatic nail gun is connected to the air source, and high-pressure air enters from the A chamber 11 and enters the B chamber 12 through the connecting pipe. Due to the pressure difference, the piston 5 pushes the firing pin 2 forward. At this time, the air inlet 61 is outside the sealing ring 7, and the C chamber 13 is not connected to the air inlet 61. No high-pressure air enters the dust blowing hole 6, so the dust blowing function is not performed.

[0024] like Figure 3As shown, during the clamping process of the pneumatic nail gun, since the air inlet 61 on the dust blowing hole 6 is related to the opening and closing amplitude of the clamping mouth 4, when the clamping mouth 4 is not fully clamped, the air inlet 61 is maintained on the outside of the sealing ring 7, and the C cavity 13 is not connected to the air inlet 61. Therefore, no pressure loss will be generated during the clamping operation of the pneumatic nail gun, thereby not affecting the clamping of the pneumatic nail gun.

[0025] When the pneumatic nail gun needs to be cleaned, it is only necessary to ensure that the pneumatic nail gun is in an unloaded state. The firing pin 2 can have a sufficient retreat distance to allow the air inlet 61 to retreat through the sealing ring 7, so that the air inlet 61 on the dust blowing hole 6 is connected to the C cavity 13, and finally the movable components in the gun body 1 can be cleaned by blowing air.

[0026] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A dust removal device for a pneumatic nail gun, comprising: A gun body (1), a striker (2) and a floating valve assembly (3), wherein the striker (2) is slidably mounted on the gun body (1), the end of the striker (2) corresponds to the clamping opening (4), and the tail of the striker (2) is connected to the piston (5), characterized in that: a dust blowing hole (6) is provided on the striker (2), an air inlet (61) at one end of the dust blowing hole (6) is located in the middle section of the striker (2), the position of the air inlet (61) corresponds to the piston C cavity (13), an air outlet (62) at one end of the dust blowing hole (6) is located at the front end of the striker (2), and the air blowing position of the air outlet (62) corresponds to the movable component in the gun body (1); The air inlet (61) on the dust blowing hole (6) is located in the middle of the striker (2) near the front end, and its position is related to the opening and closing range of the clamping mouth (4); A sealing ring (7) is provided on the sliding engagement surface between the firing pin (2) and the gun body (1); The C-shaped nail at the mouth of the pneumatic nail gun is in a state to be clamped. When the trigger is not pulled, the spring pushes the floating valve assembly (3) forward, connecting the A chamber (11) and the B chamber (12) while closing the D chamber (14). At this time, the pneumatic nail gun is connected to the air source, and high-pressure air enters from the A chamber (11) and enters the B chamber (12) through the connecting pipe. Due to the pressure difference, the piston (5) pushes the firing pin (2) forward. At this time, the air inlet (61) is outside the sealing ring (7), and the C chamber (13) is not connected to the air inlet (61). During the clamping process of the pneumatic nail gun, since the air inlet (61) on the dust blowing hole (6) is associated with the opening and closing amplitude of the clamping mouth (4), when the clamping mouth (4) is not fully clamped, the air inlet (61) is maintained outside the sealing ring (7), and the C cavity (13) is not connected to the air inlet (61).

2. The pneumatic nail gun dust removal device according to claim 1, characterized in that: The dust blowing hole (6) passes through the air inlet (61) and the air outlet (62) along the axis of the striker (2).

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