Pneumatic nail gun with novel movable valve

Abstract

The utility model provides a pneumatic nail gun with a novel movable valve. The pneumatic nail gun comprises a shell; the stamping cavity is formed in the shell, a piston is arranged in the stamping cavity, and the piston can drive the air nail to be knocked out outwards; the cylinder cover is arranged in the shell and located at the upper end of the stamping cavity; the movable valve is arranged between the air cylinder cover and the stamping cavity, in the stamping state, a driving cavity allowing gas to enter the space between the movable valve and the piston so as to move the piston towards the side away from the air cylinder cover is formed between the movable valve and the piston, and the movable valve comprises a contact end making contact with the piston and an insertion end inserted into the air cylinder cover. The contact end and the insertion end are coaxially arranged, a discharging groove used for discharging gas in the stamping cavity to the cylinder cover is formed in the middle of the contact end and the insertion end, a spring is arranged in the discharging groove, and a sealing piece is arranged between the movable valve and the cylinder cover. The machining efficiency is low; and the machining cost is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic nail guns, in particular to a pneumatic nail gun with a novel movable valve. Background Art

[0002] With the growing development of the construction and decoration industries, air nail guns have become a commonly used tool in construction and decoration. Air nail guns use the strong air pressure generated by an air pump (air compressor) to drive the top hammer in the nail gun, and the top hammer performs a hammering motion to nail the rows of nails in the nail clip into an object or eject the rows of nails. In the prior art, the pneumatic and closing of air nail guns are mostly controlled by pressing a trigger to control the movement of an active valve, and the structure of most active valves is very complicated, resulting in low processing efficiency and high processing costs. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art that the structure of the movable valve is very complicated, resulting in low processing efficiency and high processing cost, thereby providing a pneumatic nail gun with a new movable valve with simple structure and good sealing effect.

[0004] To this end, the utility model provides a pneumatic nail gun with a novel movable valve, comprising: a shell; a stamping chamber, which is arranged inside the shell, and a piston is arranged inside the stamping chamber, and the piston can drive the air nail to be driven outward; a cylinder head, which is arranged inside the shell and is located at the upper end of the stamping chamber; a movable valve, which is arranged between the cylinder head and the stamping chamber, and has an initial state and a stamping state for it, and in the initial state, the movable valve is in conflict with the piston; in the stamping state, there is a driving chamber between the movable valve and the piston for gas to enter therebetween to move the piston toward a side away from the cylinder head, the movable valve comprises a contact end in contact with the piston and an insertion end inserted into the cylinder head, the contact end and the insertion end are arranged coaxially and a discharge groove for discharging the gas in the stamping chamber to the cylinder head is opened in the middle, a spring is arranged in the discharge groove, and a sealing member is provided between the movable valve and the cylinder head.

[0005] Furthermore: an annular groove is arranged on the movable valve, and the annular groove and the cylinder head form a space for gas to enter, so as to drive the movable valve to move downward and to accommodate the gas.

[0006] Furthermore: a trigger is provided on the shell, the trigger includes a control pin and a valve seat connected to the side wall of the shell, the valve seat is provided with a through hole for gas to enter, the shell is provided with an air guide channel connected to the through hole, and the air guide channel is connected to the annular groove on the side facing away from the through hole.

[0007] Further: the shell has an air inlet cavity, the control pin is arranged between the air inlet cavity and the air guide channel, the valve seat is provided with a first air inlet connected to the air inlet cavity, a second air inlet connected to the air guide channel, and a moving channel arranged between the first air inlet and the second air inlet for movement of the control pin.

[0008] Further: the control pin includes a moving rod and a blocking block arranged at one end of the moving rod and capable of being inserted into the first air inlet, and a pressing portion arranged at the other end of the moving rod. The control pin has a separated state and a pressed state. In the separated state, the blocking block is separated from the first air inlet, and in the pressed state, the blocking block is in conflict with the first air inlet.

[0009] Furthermore: the blocking block is arranged in a conical structure.

[0010] Furthermore: a guide channel for gas flow is provided between the air inlet cavity and the drive cavity.

[0011] The technical solution of the utility model has the following advantages:

[0012] 1. The utility model provides a pneumatic nail gun with a novel movable valve, in which a cylinder head and a stamping chamber are arranged inside a shell. During the installation process, the movable valve only needs to be placed on the cylinder head, and then the cylinder head cover is arranged on the shell to complete the installation of the movable valve. The upper part of the movable valve will conflict with the cylinder head, and the lower part will conflict with the piston. A seal will be used between the movable valve and the cylinder head for sealing. In this way, the movable valve has fewer installation parts, which simplifies the installation process. When the movable valve is in an initial state, the gas will cooperate with the spring to squeeze the movable valve, so that the lower part of the movable valve conflicts with the piston. When the movable valve is in a stamping state, there is a gap between the movable valve and the piston, so that the gas can enter the stamping chamber from the gap. The pressure of the entering gas is extremely large, which can instantly push the piston to move along the setting direction of the stamping chamber, so that the push rod in the piston withdraws the air nail. This is superior to the prior art, simplifies the connection method between the movable valve and the cylinder head, improves processing efficiency, and reduces processing costs.

[0013] 2. The utility model provides a pneumatic nail gun with a new movable valve. An annular groove is arranged on the movable valve. The gas in the shell will fill the annular groove. The gas will squeeze the movable valve together with the spring, so that the lower end of the movable valve will contact the piston, and there will be no space between the piston and the movable valve for gas to enter and push the piston to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The figure is the overall cross-sectional structure diagram of the air nail gun;

[0016] Figure 2 is a positional relationship diagram between the piston and the punching cavity;

[0017] Figure 3 is another position relationship diagram between the piston and the punching cavity;

[0018] Figure 4 is a position relationship diagram between the wrench and the housing;

[0019] Figure 5 Another position relationship diagram between the wrench and the housing.

[0020] Description of reference numerals:

[0021] 1. Shell; 2. Stamping chamber; 21. Piston; 22. Drive chamber; 3. Cylinder head; 4. Movable valve; 41. Contact end; 42. Insertion end; 43. Discharge groove; 44. Spring; 45. Annular groove; 5. Seal; 6. Trigger; 61. Control pin; 611. Moving rod; 612. Block; 613. Pressing part; 62. Valve seat; 63. Perforation; 64. Air guide channel; 7. Air inlet chamber; 8. First air inlet port; 81. Second air inlet port; 82. Moving channel; 83. Guide channel. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] The present embodiment provides a pneumatic nail gun with a novel movable valve, comprising: a housing 1; a stamping chamber 2, which is arranged inside the housing 1, and a piston 21 is arranged inside the stamping chamber 2, and the piston 21 can drive the pneumatic nail to be driven outward; a cylinder head 3, which is arranged inside the housing 1 and located at the upper end of the stamping chamber 2; an movable valve 4, which is arranged between the cylinder head 3 and the stamping chamber 2, and has an initial state and a stamping state. In the initial state, the movable valve 4 is in conflict with the piston 21; in the stamping state, the movable valve 4 is in conflict with the piston 21. There is a gap between the movable valve 4 and the piston 21 for gas to enter therebetween so as to move the piston 21 toward the side away from the cylinder head 3. The movable valve 4 includes a contact end 41 in contact with the piston 21 and an insertion end 42 inserted into the cylinder head 3. The contact end 41 and the insertion end 42 are coaxially arranged and have a discharge groove 43 in the middle for discharging the gas in the stamping chamber 2 to the cylinder head 3. A spring 44 is arranged in the discharge groove 43. A seal 5 is provided between the movable valve 4 and the cylinder head 3.

[0028] The above specific improvements are: Figure 1 and Figure 2As shown, compared with the prior art, the cylinder head 3 and the stamping chamber 2 are arranged inside the housing 1. During the installation process, it is only necessary to place the movable valve 4 on the cylinder head 3, and then cover the cylinder head 3 on the housing 1 to complete the installation of the movable valve 4. The upper part of the movable valve 4 will conflict with the cylinder head 3, and the lower part will conflict with the piston 21. The movable valve 4 and the cylinder head 3 will be sealed with a seal 5. In this way, the movable valve 4 has fewer installation parts, which simplifies the installation process. When the movable valve 4 is in the initial state, the gas will cooperate with the spring 44 to squeeze the movable valve 4, so that the lower part of the movable valve 4 conflicts with the piston 21. When the movable valve 4 is in the stamping state, there is a gap between the movable valve 4 and the piston 21, so that the gas can enter the stamping chamber 2 from the gap. The pressure of the entering gas is very large, which can instantly push the piston 21 to move along the setting direction of the stamping chamber 2, so that the push rod in the piston 21 withdraws the gas nail. This is better than the prior art, simplifies the connection method between the movable valve 4 and the cylinder head 3, improves processing efficiency, and reduces processing costs.

[0029] On the basis of the above embodiment: an annular groove 45 is provided on the movable valve 4, and the annular groove 45 and the cylinder head 3 form a space for gas to enter, so as to drive the movable valve 4 to move downward and to accommodate gas.

[0030] The above specific improvements are: Figure 2 and Figure 3 As shown, an annular groove 45 is provided on the movable valve 4, and the gas in the shell 1 will fill the annular groove 45. The gas will squeeze the movable valve 4 together with the spring 44, so that the lower end of the movable valve 4 will abut against the piston 21, and there will be no space between the piston 21 and the movable valve 4 for gas to enter and push the piston 21 to move.

[0031] On the basis of the above embodiment: a trigger 6 is provided on the shell 1, and the trigger 6 includes a control pin 61 and a valve seat 62 connected to the side wall of the shell 1, and the valve seat 62 is provided with a through hole 63 for gas to enter, and the shell 1 is provided with an air guide channel 64 connected to the through hole 63, and the air guide channel 64 is connected to the annular groove 45 on the side facing away from the through hole 63.

[0032] On the basis of the above embodiment: the shell 1 has an air inlet cavity 7, the control pin 61 is arranged between the air inlet cavity 7 and the air guide channel 64, the valve seat 62 is provided with a first air inlet port 8 connected to the air inlet cavity 7, a second air inlet port 81 connected to the air guide channel 64, and a moving channel 82 arranged between the first air inlet port 8 and the second air inlet port 81 for movement of the control pin 61.

[0033] On the basis of the above embodiment: the control pin 61 includes a moving rod 611 and a blocking block 612 arranged at one end of the moving rod 611 and capable of being inserted into the first air inlet 8, and a pressing portion 613 arranged at the other end of the moving rod 611. The control pin 61 has a separated state and a pressed state. In the separated state, the blocking block 612 is separated from the first air inlet 8. In the pressed state, the blocking block 612 is in conflict with the first air inlet 8.

[0034] On the basis of the above embodiment: the blocking block 612 is arranged in a conical structure.

[0035] On the basis of the above embodiment: a guide channel 83 for gas flow is provided between the air inlet chamber 7 and the drive chamber 22 .

[0036] The above specific improvements are: Figure 4 and Figure 5 As shown, an air pump is arranged at the air inlet of the air inlet chamber 7. Through the arrangement of the air pump, the gas can fill the housing 1. When the trigger 6 is not pressed, the gas flows to the following positions: the air inlet chamber 7-the first air inlet 8-the movable channel 82-the second air inlet 81-the perforation 63-the air guide channel 64-the annular groove 45. The gas cooperates with the spring 44 to squeeze the movable valve 4, so that the movable valve 4 moves toward the side close to the piston 21 (at this time, the movable valve 4 and the piston 21 are in a state of conflict, and no gas can enter between the two to push the piston 21 to move). When the trigger 6 is pressed, the block 612 blocks the first air inlet 8, so that the gas cannot enter from the first air inlet 8 to reach the annular groove 45, and there will be no gas in the annular groove 45. The spring alone can stop the movable valve 4 from moving. 44's own elasticity cannot drive the movable valve 4 to collide with the piston 21, then a driving chamber 22 will appear between the movable valve 4 and the piston 21, and the gas will flow from the guide channel 83 to the driving chamber 22. Since the air pressure in the driving chamber 22 increases instantly, the piston 21 will be driven to move toward the side facing away from the cylinder head 3, thereby pushing the gas nail out. When the trigger 6 is released, the block 612 is reset, and the gas can enter the annular groove 45 from the first air inlet 8 again, so that the piston 21 continues to collide with the movable valve 4, and the driving chamber 22 does not exist at this time. The block 612 is set to a conical structure. The conical block 612 is inserted into the circular first air inlet 8, which can effectively seal the first air inlet 8 and prevent the gas from entering the annular groove 45.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A pneumatic nail gun with a new movable valve, characterized in that: include: Housing (1); A punching chamber (2) is arranged inside the housing (1), and a piston (21) is arranged inside the punching chamber (2), and the piston (21) can drive the air nail to be punched outward; A cylinder head (3) is arranged inside the housing (1) and is located at the upper end of the stamping cavity (2); A movable valve (4) is arranged between the cylinder head (3) and the stamping chamber (2), and has an initial state and a stamping state. In the initial state, the movable valve (4) contacts the piston (21); in the stamping state, a driving chamber (22) is provided between the movable valve (4) and the piston (21) for gas to enter therebetween so as to move the piston (21) toward a side away from the cylinder head (3). The movable valve (4) comprises a contact end (41) in contact with the piston (21) and an insertion end (42) inserted into the cylinder head (3). The contact end (41) and the insertion end (42) are arranged coaxially and a discharge groove (43) is provided in the middle for discharging gas in the stamping chamber (2) to the cylinder head (3). A spring (44) is provided in the discharge groove (43). A sealing member (5) is provided between the movable valve (4) and the cylinder head (3).

2. A pneumatic nail gun with a novel movable valve according to claim 1, characterized in that: An annular groove (45) is provided on the movable valve (4), and the annular groove (45) and the cylinder head (3) form a space for gas to enter, so as to drive the movable valve (4) to move downward and to accommodate gas.

3. A pneumatic nail gun with a novel movable valve according to claim 2, characterized in that: The housing (1) is provided with a trigger (6), the trigger (6) and a control pin (61) and a valve seat (62) connected to the side wall of the housing (1), the valve seat (62) is provided with a through hole (63) for gas to enter, the housing (1) is provided with an air guide channel (64) connected to the through hole (63), and the side of the air guide channel (64) facing away from the through hole (63) is connected to the annular groove (45).

4. A pneumatic nail gun with a novel movable valve according to claim 3, characterized in that: The housing (1) is provided with an air inlet cavity (7), the control pin (61) is arranged between the air inlet cavity (7) and the air guide channel (64), and the valve seat (62) is provided with a first air inlet port (8) connected to the air inlet cavity (7), a second air inlet port (81) connected to the air guide channel (64), and a moving channel (82) arranged between the first air inlet port (8) and the second air inlet port (81) and used for the control pin (61) to move.

5. A pneumatic nail gun with a novel movable valve according to claim 4, characterized in that: The control pin (61) comprises a moving rod (611), a blocking block (612) arranged at one end of the moving rod (611) and capable of being inserted into the first air inlet (8), and a pressing portion (613) arranged at the other end of the moving rod (611). The control pin (61) has a separated state and a pressed state. In the separated state, the blocking block (612) is separated from the first air inlet (8). In the pressed state, the blocking block (612) is in contact with the first air inlet (8).

6. A pneumatic nail gun with a novel movable valve according to claim 5, characterized in that: The blocking block (612) is arranged in a conical structure.

7. A pneumatic nail gun with a novel movable valve according to any one of claims 4 to 6, characterized in that: A guide channel (83) for gas flow is provided between the air inlet chamber (7) and the drive chamber (22).

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