CN111872590A

CN111872590A - Novel flexible gun head and preparation method thereof

Info

Publication number: CN111872590A
Application number: CN202010857534.1A
Authority: CN
Inventors: 李京
Original assignee: Shanghai Innotec Co ltd
Current assignee: Shanghai Innotec Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2020-11-03

Abstract

The invention provides a novel flexible gun head, which comprises: the gun head comprises a gun head core, a spring hose, a reinforcing sleeve and a conductive air pipe; one end of the conductive air pipe is provided with a connecting boss; the connecting boss is inserted into one end of the spring hose, and the spring hose is fixedly connected with the connecting boss; one part of the reinforcing sleeve is sleeved on the excircle of the spring hose, the rest part of the reinforcing sleeve is sleeved on the excircle of the conductive air pipe, and the reinforcing sleeve is fixedly connected with the conductive air pipe; the other end of the spring hose is fixedly connected with the gun head core. The bending force of the gun head is reduced, and the bending times of the gun head are increased; meanwhile, the problems that flexible gun heads are difficult to bend and product handles are not long in the market are solved.

Description

Novel flexible gun head and preparation method thereof

Technical Field

The invention relates to a welding gun head, in particular to a novel flexible gun head and a preparation method thereof.

Background

When the flexible gun head is bent in the market, the bending is difficult due to the insufficient flexibility, and when the gun head is bent, the gun head can be bent only by using 0.8-0.95 N.m, so that the inconvenience of a user is caused. The bending times are generally about 150 times to 200 times, and the service life of bending the gun head is short.

Disclosure of Invention

According to the novel flexible gun head provided by the invention, the bending strength of the gun head is reduced, and the bending times of the gun head are increased; meanwhile, the problems that flexible gun heads are difficult to bend and product handles are not long in the market are solved, and the defects of the prior art are overcome.

The invention provides a novel flexible gun head, which comprises: the gun head comprises a gun head core 1, a spring hose 2, a reinforcing sleeve 3 and a conductive air pipe 4; one end of the conductive air pipe 4 is provided with a connecting boss 41; the connecting boss 41 is inserted into one end of the spring hose 2, and the spring hose 2 is fixedly connected with the connecting boss 41; one part of the reinforcing sleeve 3 is sleeved on the excircle of the spring hose 2, the rest part of the reinforcing sleeve is sleeved on the excircle of the conductive air pipe 4, and the reinforcing sleeve 3 is fixedly connected with the conductive air pipe 4; the other end of the spring hose 2 is fixedly connected with the gun head core 1.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the outer diameter of the connecting boss 41 is matched with the inner diameter of the spring hose 2; the outer diameter of the conductive air tube 4 is larger than the inner diameter of the spring hose 2 and smaller than the outer diameter of the spring hose 2.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the reinforcing sleeve 3 has a stepped hole 31; the large circular inner diameter of the step hole 31 is matched with the outer diameter of the spring hose 2; the small circular inner diameter of the stepped hole 31 matches the outer diameter of the reinforcing sleeve 4.

Further, the present invention provides a novel flexible lance head, which may also have the following features: also comprises a cable connector 5; the other end of the conductive air tube 4 is fixedly connected with one end of the cable connecting piece 5.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the opening of the reinforcing sleeve 3 at the location of the spring tube 2 has a rounded chamfer 32.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the spring hose 2 is formed by oppositely winding double-strand wires.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the reinforcing sleeve 3 is fitted over the spring tube 2 over a length of more than 5 mm.

Further, the present invention provides a novel flexible lance head, which may also have the following features: the fixed connection is welding fixation.

In addition, the invention also provides a preparation method of the novel flexible gun head, which comprises the following steps:

step A, welding and fixing a gun head core 1 at the other end of the spring hose 2; the other end of the conductive air pipe 4 is welded and fixed with one end of the cable connecting piece 5;

and step B, sleeving the reinforcing sleeve 3 on the conductive air pipe 4, and exposing the position of the connecting boss 41.

And step C, inserting the connecting boss 41 of the conductive air pipe 4 into the spring hose 3, and welding and fixing the connecting boss at the connecting position.

And D, pulling the reinforcing sleeve 3 to the connecting position of the spring hose 3 and the conductive air pipe 4, completely covering the welding position of the spring hose 3 and the conductive air pipe 4, and welding and fixing the reinforcing sleeve 3 and the conductive air pipe 4 after the preset length of the welding position of the spring hose and the conductive air pipe is exceeded.

Drawings

Figure 1 is a schematic diagram of the structure of the novel flexible lance tip in the example.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Examples

The novel flexible rifle head in this embodiment includes: gun head core 1, spring hose 2, reinforcing sleeve 3, electrically conductive trachea 4 and cable connecting piece 5.

In this embodiment, the whole outer diameter of the conductive air tube 4 is larger than the inner diameter of the spring hose 2 and smaller than the outer diameter of the spring hose 2. The left end of the conductive air pipe 4 is provided with a connecting boss 41; the outer diameter of the connecting boss 41 is smaller than the outer diameter of the integrated conductive gas pipe 4. And the outer diameter of the connecting boss 41 is matched with the inner diameter of the spring hose 2, so that the connecting boss 41 of the conductive air pipe 4 is jointed with the inner hole of the spring hose 2 after being inserted into the inner hole of the spring hose 2. The spring hose 2 is fixedly connected with the connecting boss 41 by silver soldering at the position where the spring hose is attached to the connecting boss.

The reinforcing sleeve 3 has a stepped hole 31 therein. The large circular inner diameter of the step hole 31 is matched with the outer diameter of the spring hose 2; the small circular inner diameter of the stepped hole 31 matches the outer diameter of the reinforcing sleeve 4. Part of the reinforcing sleeve 3 is sleeved on the excircle of the spring hose 2, and the rest part of the reinforcing sleeve is sleeved on the excircle of the conductive air pipe 4. Because the small circular inner diameter of the stepped hole 31 is smaller than the outer diameter of the spring hose 2, the end face of the stepped hole 31 is exactly aligned with the end face of the connecting boss 41. The small circle position of the stepped hole of the reinforcing sleeve 3 is fixedly connected with the whole excircle of the conductive air pipe 4 by silver soldering. It should be noted that, the reinforcing sleeve 3 is sleeved on the portion of the spring tube 2, and the welding position of the conductive air tube 4 and the spring tube 2 needs to be shielded, and a position exceeding 5 mm is preferable. The opening of the reinforcing sleeve 3 at the location of the spring tube 2 has a rounded chamfer 32.

The other end of the conductive air tube 4 is fixedly connected with one end of the cable connecting piece 5 to realize the connection with the cable part. The other end of the spring hose 2 is fixedly connected with the gun head core 1 by silver soldering.

In this embodiment, the spring hose 2 is made of two strands of high-quality copper wires of 2.5 mm, the bending force is well reduced to 0.4N · m-0.55N · m, the winding mode is opposite winding, the two copper wires are mutually restrained when bending off the fingers and thumb, and the reinforcing sleeve 3 between the connecting portions of the spring hose 2 and the conductive air pipe 4 protects the space between the spring hose 2 and the conductive air pipe 4, so that the concentrated stress is effectively dispersed on the reinforcing sleeve 3, the bending life of the flexible gun head is greatly prolonged, and the service life is increased to about 800 times.

The preparation method of the novel flexible gun head comprises the following steps:

step A, welding and fixing a gun head core 1 at the other end of the spring hose 2; the other end of the conductive air pipe 4 is welded and fixed with one end of the cable connecting piece 5. The two welding steps are partially sequential.

And step B, sleeving the reinforcing sleeve 3 on the conductive air pipe 4, and exposing the position of the connecting boss 41. The actual operation pulls the reinforcing sleeve 3 back into position against the cable connection 5.

And D, pulling the reinforcing sleeve 3 to the connecting position of the spring hose 3 and the conductive air pipe 4, completely covering the welding position of the spring hose 3 and the conductive air pipe 4, and welding and fixing the reinforcing sleeve 3 and the conductive air pipe 4 after the length of the reinforcing sleeve exceeds the length of 5 mm of the welding position of the spring hose and the conductive air pipe.

The embodiments described above are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a novel flexible rifle head which characterized in that: comprises a gun head core (1), a spring hose (2), a reinforcing sleeve (3) and a conductive air pipe (4);

wherein, one end of the conductive air pipe (4) is provided with a connecting boss (41);

the connecting boss (41) is inserted into one end of the spring hose (2), and the spring hose (2) is fixedly connected with the connecting boss (41);

one part of the reinforcing sleeve (3) is sleeved on the excircle of the spring hose (2), the rest part of the reinforcing sleeve is sleeved on the excircle of the conductive air pipe (4), and the reinforcing sleeve (3) is fixedly connected with the conductive air pipe (4);

the other end of the spring hose (2) is fixedly connected with the gun head core (1).

2. A novel flexible lance head according to claim 1, characterised in that:

wherein the outer diameter of the connecting boss (41) is matched with the inner diameter of the spring hose (2);

the outer diameter of the conductive air pipe (4) is larger than the inner diameter of the spring hose (2) and smaller than the outer diameter of the spring hose (2).

3. A novel flexible lance head according to claim 2, characterised in that:

wherein the reinforcing sleeve (3) has a stepped bore (31);

the large-circle inner diameter of the stepped hole (31) is matched with the outer diameter of the spring hose (2);

the small circular inner diameter of the stepped hole (31) is matched with the outer diameter of the reinforcing sleeve (4).

4. A novel flexible lance head according to claim 1, characterised in that:

also comprises a cable connector (5); the other end of the conductive air pipe (4) is fixedly connected with one end of the cable connecting piece (5).

5. A novel flexible lance head according to claim 1, characterised in that:

the opening of the reinforcing sleeve (3) sleeved at the position of the spring hose (2) is provided with an arc chamfer (32).

6. A novel flexible lance head according to claim 1, characterised in that:

the spring hose (2) is formed by oppositely winding double-strand wires.

7. A novel flexible lance head according to claim 1, characterised in that:

wherein the length of the reinforcing sleeve (3) sleeved on the spring hose (2) exceeds 5 mm.

8. A novel flexible lance head according to claim 1, characterised in that:

9. A novel flexible lance head according to any one of claims 1 to 8, wherein: the fixed connection is welded and fixed.

10. A method of preparing a novel flexible lance head according to claim 8, characterised in that: the method comprises the following steps:

step A, welding and fixing the gun head core (1) at the other end of the spring hose (2); the other end of the conductive air pipe (4) is fixedly welded with one end of the cable connecting piece (5);

step B, sleeving the reinforcing sleeve (3) on the conductive air pipe (4) and exposing the position of the connecting boss (41);

step C, inserting the connecting boss (41) of the conductive air pipe (4) into the spring hose (3) and welding and fixing the connecting boss at a connecting position;

d, pulling the reinforcing sleeve (3) to the connecting position of the spring hose (3) and the conductive air pipe (4), completely covering the welding position of the spring hose and the conductive air pipe, and welding and fixing the reinforcing sleeve (3) and the conductive air pipe (4) after the preset length of the welding position of the spring hose and the conductive air pipe is exceeded.