CN219543058U

CN219543058U - Buffering device of pneumatic coil nail gun

Info

Publication number: CN219543058U
Application number: CN202320352096.2U
Authority: CN
Inventors: 谢兵
Original assignee: Weiwan Technology Co ltd
Current assignee: Weiwan Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-08-18
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses a buffering device of a pneumatic screw gun, which comprises a mushroom head and a buffering ring, wherein the mushroom head and the buffering ring are made of polyurethane, a through hole is formed in the mushroom head along the axial direction of the mushroom head, the mushroom head comprises a head part and a rod part, the buffering ring is sleeved on the rod part, a movable gap is reserved between the inner wall of the buffering ring and the outer wall of the rod part, and the length of the rod part is larger than that of the buffering ring in the axial direction of the rod part.

Description

Buffering device of pneumatic coil nail gun

Technical Field

The utility model belongs to the technical field of coil nail guns, and particularly relates to a buffer device of a pneumatic coil nail gun.

Background

The pneumatic nail rolling gun uses compressed air as power and mainly works by means of balance and unbalance of air pressure among different air passages, the compressed air is stored in an energy storage cavity, when a trigger is triggered, the pressure of the compressed air in a bleed air pipe is reduced to atmospheric pressure, the pressure difference at two ends of a plunger valve enables the bleed air to be opened, and the compressed air starts to rush in from a valve to impact a piston firing pin, so that the action process of quick nailing is completed once; when the piston moves to the tail end of the end cover rapidly, the piston needs to be decelerated to reduce the impact, and the buffer device absorbs the impact energy to reduce the impact so as to effectively protect the coil nail gun.

The prior cushion pad adopts a common cylindrical structure, and the mechanical strength and the fatigue resistance of the cushion pad are obviously reduced under the frequent impact of a piston and a syringe needle, so that the service life of the cushion pad is not high.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a mushroom head made of polyurethane combined with a buffer ring to realize secondary buffer, which has larger heat dissipation area, more balanced dispersed stress and longer impact service life.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pneumatic nail rifle buffer, includes mushroom head and cushion collar, mushroom head and cushion collar's material is polyurethane, and the through-hole has been seted up along its axial to mushroom head, and mushroom head includes head and pole portion, cushion collar cover is on pole portion, leaves the clearance between the outer wall of the inner wall of cushion collar and pole portion, and the length of pole portion is greater than the length of cushion collar on the axial of pole portion.

Further, a plurality of heat dissipation grooves are formed in the inner side and the outer side of the rod portion.

The section of the radiating groove is U-shaped, and the radiating groove extends along the axial direction of the rod part.

The outer diameter of the rod part is gradually increased from one end to the other end, and the outer diameter of the joint of the rod part and the head part is the largest.

Further, one end of the rod part, which is away from the head part, is provided with a flaring.

Compared with the prior art, the utility model has the beneficial effects that: the mushroom head made of polyurethane is combined with the buffer ring to realize secondary buffer, and the U-shaped heat dissipation grooves are arranged on the surface of the mushroom head, so that the heat dissipation area is increased, the hard force is dispersed more uniformly, the impact life is prolonged, and the problems that the existing rubber buffer device in the market is not long in cracking life in application are solved.

Drawings

FIG. 1 is a cross-sectional view of a pneumatic coil nail gun cushioning apparatus of the present utility model;

FIG. 2 is a perspective view of the mushroom head according to the present utility model;

FIG. 3 is a perspective view of a buffer ring according to the present utility model;

fig. 4 is a schematic view of the utility model in use.

Reference numerals: 1. a mushroom head; 11. a head; 12. a stem portion; 121. a heat sink; 2. a buffer ring; 3. and (3) a piston.

Description of the embodiments

Embodiments of the pneumatic coil gun cushioning apparatus of the present utility model are further described with reference to fig. 1-4.

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The utility model provides a pneumatic nail rifle buffer, includes mushroom head 1 and buffer ring 2, mushroom head 1 and buffer ring 2's material is polyurethane, and the through-hole has been seted up along its axial to mushroom head 1, and mushroom head 1 includes head 11 and pole portion 12, buffer ring 2 cover is on pole portion 12, leaves the clearance between the outer wall of inner wall and the pole portion 12 of buffer ring 2, and the length of pole portion 12 is greater than the length of buffer ring 2 on the axial of pole portion 12.

As shown in fig. 4, when the device is applied, the device is arranged in a screw gun, the mushroom buffer ring 2 is sleeved on the rod part 12, one side of the mushroom buffer ring is propped against the surface of the head part 11, in the process of shooting nails by the piston 3, the piston 3 firstly contacts and impacts the convex rod part 12, and along with the compression of the rod part 12 and the head part 11, the mushroom buffer ring 2 contacts and impacts the buffer ring 2, namely, the two-stage buffer is realized, meanwhile, heat is generated by the mushroom head 1 and the buffer ring 2 during impact, the heat can be rapidly dissipated through a movable gap between the mushroom buffer ring and the rod part, and the heat dissipation area is larger.

The polyurethane in the embodiment is high-performance polyurethane, and the material has high strength and strong impact resistance

As shown in fig. 2, in this embodiment, a plurality of heat dissipation grooves 121 are preferably provided on the inner side and the outer side of the shaft 12.

Wherein the cross section of the heat dissipation groove 121 is U-shaped, and the heat dissipation groove 121 extends along the axial direction of the rod 12.

The heat dissipation grooves 121 are uniformly distributed along the circumference, and the heat dissipation grooves 121 on the inner side of the rod portion 12 and the heat dissipation grooves 121 on the outer side of the rod portion 12 greatly increase the surface area of the rod portion 12 and improve the stress points of the heat dissipation grooves.

As shown in fig. 1-3, the preferred outer diameter of the shaft 12 in this embodiment gradually increases from one end to the other, and the outer diameter of the junction between the shaft 12 and the head 11 is the largest.

The change of the outer diameter of the rod 12 can facilitate the sleeving of the buffer ring 2 and can prevent the buffer ring 2 and the rod 12 from being clamped with each other.

In this embodiment, preferably, one end of the rod portion 12 facing away from the head 11 is provided with a flaring, one side of the flaring facilitates movement of the rod of the piston 3, and the bore diameter of the inner bore of the rod portion 12 is larger than the diameter of the rod of the piston 3, so as to prevent contact friction between the two.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A pneumatic coil nail gun buffer device, which is characterized in that: the novel buffering device comprises a mushroom head and a buffering ring, wherein the mushroom head and the buffering ring are made of polyurethane, a through hole is formed in the mushroom head along the axial direction of the mushroom head, the mushroom head comprises a head portion and a rod portion, the buffering ring is sleeved on the rod portion, a movable gap is reserved between the inner wall of the buffering ring and the outer wall of the rod portion, and the length of the rod portion is larger than that of the buffering ring in the axial direction of the rod portion.

2. The pneumatic coil nail gun buffering device of claim 1, wherein: the inner side and the outer side of the rod part are respectively provided with a plurality of heat dissipation grooves.

3. The pneumatic coil nail gun buffering device of claim 2, wherein: the section of the heat dissipation groove is U-shaped, and the heat dissipation groove extends along the axial direction of the rod part.

4. A pneumatic coil nail gun cushioning apparatus according to claim 3, wherein: the outer diameter of the rod part gradually increases from one end to the other end, and the outer diameter of the joint of the rod part and the head part is the largest.

5. The pneumatic coil nail gun buffering device of claim 4, wherein: and one end of the rod part, which is opposite to the head part, is provided with a flaring.