CN212577803U

CN212577803U - Inner hole laser welding head

Info

Publication number: CN212577803U
Application number: CN202021283020.1U
Authority: CN
Inventors: 王克会; 付海瑞; 牛琪
Original assignee: Tianjin Binhai Rex Laser Technology Development Co ltd
Current assignee: Tianjin Binhai Rex Laser Technology Development Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-23
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a hole laser welder head, including the conduction pipe, a serial communication port, even there is vertical cross-section for the laser passageway of square bottom the lateral wall of conduction pipe, be equipped with the speculum in the junction of laser passageway and conduction pipe, the intraductal collimating mirror of ann of conduction between speculum and end seat, the intraductal focusing mirror of ann of conduction between collimating mirror and the speculum that is located, optical fiber interface, the collimating mirror, the focusing mirror all sets up with the conduction pipe is coaxial, be equipped with the horizontally protective glass mounting panel in the laser passageway, be equipped with the heat dissipation chamber between the inner wall of conduction pipe and outer wall, at the intracavity heat dissipation mechanism that is equipped with of heat dissipation. The utility model discloses a set up the laser channel that the cross-section is the square, ann has locking mechanical system's protective glass mounting panel, is changing the in-process of protective glass easy and simple to handle, has improved change efficiency, and then has practiced thrift the processing cost.

Description

Inner hole laser welding head

Technical Field

The utility model relates to a laser welding equipment technical field especially relates to a hole laser welder head.

Background

The laser welding equipment utilizes high-energy laser pulses to locally heat materials in a micro area, the energy of laser radiation is diffused into the materials through heat conduction, and the materials are melted to form a specific molten pool so as to achieve the purpose of welding. Laser welding has been widely used in the manufacture of household electrical appliances, automobiles, machinery, electronics and light industrial products due to the advantages of small welding deformation and high precision. In the existing welding technology, an inner wall or an inner side wall of a part is generally subjected to laser welding by using an inner hole laser welding head. Hole laser welder head can produce a large amount of high temperature cigarettes at the welding process, and the smog layer can be piled up to the protective glass on the hole laser welder head, and the light transmissivity of direct effect protective glass needs the regular change protective glass, but, the hole laser welder head that uses at present is numerous and diverse at the in-process operation process who changes the protective glass, and it is inefficient to change, has increased the processing cost.

Disclosure of Invention

The utility model discloses aim at solving prior art not enough, and provide a hole laser welder head.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

a laser welding head with an inner hole comprises a conduction pipe, and is characterized in that a first end seat and a second end seat are respectively and coaxially fixedly connected with two ends of the conduction pipe, an optical fiber interface communicated with the conduction pipe is arranged on the first end seat, a vertical laser channel with a square cross section is connected with the bottom of the side wall of the conduction pipe, the laser channel is arranged on one side of the conduction pipe far away from the first end seat, the top end of the laser channel is communicated with the inside of the conduction pipe, a reflecting mirror is arranged at the joint of the laser channel and the conduction pipe, the reflecting mirror is arranged in the conduction pipe, a collimating mirror is arranged in the conduction pipe between the reflecting mirror and the first end seat, a focusing mirror is arranged in the conduction pipe between the collimating mirror and the reflecting mirror, the optical fiber interface, the collimating mirror and the focusing mirror are all coaxially arranged with the conduction pipe, a horizontal protective mirror mounting plate is arranged in the laser channel, the left end and the right end of the protective mirror mounting plate both, be equipped with the coaxial installation opening with laser channel on the protective glass mounting panel, it has the protective glass to embed at the installation opening, and it has the nozzle to link to dismantle coaxially in laser channel below, and the circumference distributes on the lateral wall of nozzle has gas passage, and gas passage's inlet end passes through the trachea and is connected with the air feeder of external protection gas, is equipped with the heat dissipation chamber between the inner wall of conduction pipe and outer wall, is equipped with heat dissipation mechanism at the intracavity of dispelling the heat.

The heat dissipation mechanism comprises a heat dissipation spiral pipe coaxially arranged in a heat dissipation cavity of the conduction pipe, the end wall, through which the water inlet pipe of the heat dissipation spiral pipe penetrates out of the conduction pipe, is connected with a water cooling tank, the water cooling tank is fixedly connected onto the end seat II, the water cooling tank is connected with a liquid inlet pipe, and the water outlet pipe of the heat dissipation spiral pipe penetrates out of the outer wall of the conduction pipe and is connected with external circulation equipment.

And the conduction pipe is connected with the first end seat and the second end seat in a welding mode.

The reflector is inclined at an angle of 45 degrees along the direction of the conduction pipe.

The lower side wall of the laser channel is provided with an internal thread, the upper part of the side wall of the nozzle is provided with an external thread matched with the internal thread, and the laser channel is in threaded detachable connection with the nozzle.

Locking mechanical system includes the L shape connecting plate of rigid coupling in the conduction socle portion outside, the vertical board and the conduction pipe rigid coupling of L shape connecting plate, is equipped with the pull rod on the horizontal plate of L shape connecting plate, the top of pull rod is located the horizontal plate top rigid coupling of L shape connecting plate and has last spacing board, and the horizontal plate rigid coupling that the bottom of pull rod slided and passes L shape connecting plate has lower spacing board, and the bottom rigid coupling of lower spacing board has the inserted bar, and the rigid coupling has the reset spring coaxial with the pull rod between the horizontal plate support of lower spacing board and L shape connecting plate, is equipped with the slot that corresponds with the inserted bar on the protective glass mounting panel, and the inserted bar inserts in the slot.

And the top end of the upper limiting plate is provided with a pull ring.

The utility model has the advantages that: the utility model has the advantages of compact and reasonable structure, it is convenient to use, is the laser channel of square through setting up the cross-section, ann has locking mechanism's protective glass mounting panel, and is easy and simple to handle at the in-process of changing the protective glass, has improved change efficiency, and then has practiced thrift the processing cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

in the figure: 1-end seat one; 2-an optical fiber interface; 3-a heat dissipation spiral pipe; 4-a conducting tube; 5-a collimating mirror; 6-a focusing mirror; 7-a mirror; 8-connecting pipe; 9-a water cooling tank; 10-end seat II; 11-laser channel; 12-a nozzle; 13-a gas channel; 14-protective glasses; 15-protective glass mounting plate; 16-a plunger; 17-a pull rod; 18-L-shaped connecting plates;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1-2, an inner bore laser welding head comprises a conducting tube 4, and is characterized in that a first end seat 1 and a second end seat 10 are respectively and coaxially fixedly connected to two ends of the conducting tube 4, an optical fiber interface 2 communicated with the conducting tube 4 is arranged on the first end seat 1, a vertical laser channel 11 with a square cross section is connected to the bottom of the side wall of the conducting tube 4, the laser channel 11 is arranged on one side of the conducting tube 4 far away from the first end seat 1, the top end of the laser channel 11 is communicated with the inside of the conducting tube 4, a reflector 7 is arranged at the joint of the laser channel 11 and the conducting tube 4, the reflector 7 is arranged in the conducting tube 4, a collimating mirror 5 is arranged in the conducting tube 4 between the reflector 7 and the first end seat 1, a focusing mirror 6 is arranged in the conducting tube 4 between the collimating mirror 5 and the reflecting mirror 7, the optical fiber interface 2, the collimating mirror 5 and the focusing mirror 6 are all coaxially arranged with the conducting tube 4, the laser protection device is characterized in that a horizontal protection mirror mounting plate 15 is arranged in the laser channel 11, the side wall of the laser channel 11 penetrates out from the left end and the right end of the protection mirror mounting plate 15 to be connected with a locking mechanism, a mounting opening coaxial with the laser channel 11 is arranged on the protection mirror mounting plate 15, a protection mirror 14 is arranged in the mounting opening, a nozzle 12 is coaxially detachably connected below the laser channel 11, a gas channel 13 is circumferentially distributed on the side wall of the nozzle 12, the gas inlet end of the gas channel 13 is connected with gas supply equipment of external protective gas through a gas pipe, a heat dissipation cavity is arranged between the inner wall and the outer wall of the conduction pipe 4, and a heat dissipation mechanism is arranged.

The heat dissipation mechanism comprises a heat dissipation spiral pipe 3 coaxially arranged in a heat dissipation cavity of a conduction pipe 4, the end wall of the heat dissipation spiral pipe 3, penetrating out of the conduction pipe 4, of a water inlet pipe is connected with a water cooling tank 9, the water cooling tank 9 is fixedly connected onto a second end seat 10, the water cooling tank 9 is connected with a liquid inlet pipe, and the outer wall of the heat dissipation spiral pipe 3, penetrating out of the conduction pipe 4, is connected with external circulation equipment.

And the conduction pipe 4 is connected with the first end seat 1 and the conduction pipe 4 is connected with the second end seat 10 in a welding mode.

The mirror 7 is inclined at an angle of 45 ° in the direction of the conducting tube 4.

The lower lateral wall of laser passageway 11 is equipped with the internal thread, the lateral wall upper portion of nozzle 12 is equipped with the external screw thread with internal thread looks adaptation, laser passageway 11 with nozzle 12 threaded disassembly connects.

Locking mechanical system includes L shape connecting plate 18 of rigid coupling in the 4 bottom outsides of conduction pipe, and L shape connecting plate 18's vertical board and the 4 rigid couplings of conduction pipe are equipped with pull rod 17 on the horizontal plate of L shape connecting plate 18, the top of pull rod 17 is located L shape connecting plate 18's horizontal plate top rigid coupling has upper limit plate, and the horizontal plate rigid coupling that L shape connecting plate 18 was passed in the bottom slip of pull rod 17 has lower limit plate, and the bottom rigid coupling of lower limit plate has inserted bar 16, and the rigid coupling has the reset spring coaxial with pull rod 17 between lower limit plate and L shape connecting plate 18's horizontal plate support, is equipped with the slot that corresponds with inserted bar 16 on protective mirror mounting panel 15, and inserted bar 16 inserts in the slot.

And the top end of the upper limiting plate is provided with a pull ring.

When the utility model works, laser emitted by an external optical fiber laser firstly irradiates to a collimating mirror 5 through an optical fiber interface 2, becomes parallel light after passing through the collimating mirror 5, is focused by a focusing mirror 6, then enters a laser channel 11 after being reflected by a reflector 7 to change the laser direction, is ejected out through a nozzle 12 through a protective mirror 14 in the laser channel 11, and is matched with a gas channel 13 to carry out laser welding on the inner wall or the inner side wall of a part, when the protective mirror 14 needs to be replaced, an operator drives a pull rod 17 of a locking mechanism to move upwards through a pull ring to compress a reset spring, so that an inserted rod 16 is moved out of an insertion groove on the protective mirror mounting plate 15, then the protective mirror mounting plate 15 is taken out of the laser channel 11 to replace the protective mirror 14, the operator places the protective mirror mounting plate 15 after replacing the protective mirror 14 on the laser channel 11 and loosens the pull ring, and the pull rod, make the inserted bar 16 insert corresponding slot, easy and simple to handle at the in-process of changing protective glass 14, improved change efficiency, and then practiced thrift the processing cost, the utility model discloses compact structure is reasonable, and it is convenient to use.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. An inner hole laser welding head comprises a conduction pipe (4), and is characterized in that two ends of the conduction pipe (4) are respectively and coaxially fixedly connected with a first end seat (1) and a second end seat (10), an optical fiber interface (2) communicated with the conduction pipe (4) is arranged on the first end seat (1), the bottom of the side wall of the conduction pipe (4) is connected with a vertical laser channel (11) with a square cross section, the laser channel (11) is arranged on one side of the conduction pipe (4) far away from the first end seat (1), the top end of the laser channel (11) is communicated with the inside of the conduction pipe (4), a reflecting mirror (7) is arranged at the joint of the laser channel (11) and the conduction pipe (4), the reflecting mirror (7) is arranged in the conduction pipe (4), a collimating mirror (5) is arranged in the conduction pipe (4) between the reflecting mirror (7) and the first end seat (1), and a focusing mirror (6) is arranged in the conduction pipe (4) between the collimating mirror (5) and the reflecting mirror (7), optical fiber interface (2), collimating mirror (5), focusing mirror (6) all with the coaxial setting of conduction pipe (4), be equipped with horizontally protective glass mounting panel (15) in laser passageway (11), the lateral wall that laser passageway (11) were all worn out at both ends about protective glass mounting panel (15) is connected with locking mechanical system, be equipped with the opening of installation coaxial with laser passageway (11) on protective glass mounting panel (15), it has protective glass (14) to embed at the opening of installation, it has nozzle (12) to dismantle coaxially in laser passageway (11) below, circumference distribution has gas passage (13) on the lateral wall of nozzle (12), the inlet end of gas passage (13) passes through the trachea and is connected with the air feeder of external protection gas, be equipped with the heat dissipation chamber between the inner wall of conduction pipe (4) and outer wall, be equipped with heat dissipation mechanism in the heat dissipation chamber.

2. The inner hole laser welding head as claimed in claim 1, wherein the heat dissipation mechanism comprises a heat dissipation spiral pipe (3) coaxially arranged in a heat dissipation cavity of the conduction pipe (4), a water cooling tank (9) is connected to an end wall of the heat dissipation spiral pipe (3) penetrating through the conduction pipe (4), the water cooling tank (9) is fixedly connected to the end seat II (10), a liquid inlet pipe is connected to the water cooling tank (9), and a water outlet pipe of the heat dissipation spiral pipe (3) penetrates through an outer wall of the conduction pipe (4) and is connected with external circulation equipment.

3. An inner bore laser welding head according to claim 1, characterized in that the conducting tube (4) and the first end seat (1) and the conducting tube (4) and the second end seat (10) are connected by welding.

4. A female laser welding head according to claim 1, characterized in that the angle of inclination of the mirror (7) in the direction of the conducting tube (4) is 45 °.

5. The inner bore laser welding head as claimed in claim 1, characterized in that the lower side wall of the laser channel (11) is provided with an internal thread, the upper part of the side wall of the nozzle (12) is provided with an external thread adapted to the internal thread, and the laser channel (11) is connected with the nozzle (12) in a threaded detachable manner.

6. An inner bore laser welding head according to claim 1, characterized in that the locking mechanism comprises an L-shaped connecting plate (18) fixedly connected to the outside of the bottom of the conducting tube (4), the vertical plate of the L-shaped connecting plate (18) is fixedly connected to the conducting tube (4), the horizontal plate of the L-shaped connecting plate (18) is provided with a pull rod (17), an upper limiting plate is fixedly connected to the top end of the pull rod (17) above a horizontal plate of the L-shaped connecting plate (18), a lower limiting plate is fixedly connected to the bottom of the pull rod (17) and penetrates through the horizontal plate of the L-shaped connecting plate (18) in a sliding manner, an inserting rod (16) is fixedly connected to the bottom of the lower limiting plate, a return spring coaxial with the pull rod (17) is fixedly connected between the lower limiting plate and a horizontal plate support of the L-shaped connecting plate (18), the protective mirror mounting plate (15) is provided with a slot corresponding to the insert rod (16), and the insert rod (16) is inserted into the slot.

7. The inner bore laser welding head as claimed in claim 6, wherein the upper limiting plate is provided with a pull ring at its top end.