CN218487459U

CN218487459U - Laser output connector for handheld laser welding and optical fiber laser

Info

Publication number: CN218487459U
Application number: CN202222220703.8U
Authority: CN
Inventors: 金东臣; 王光德; 王涛
Original assignee: Bwt Tianjin Ltd
Current assignee: Bwt Tianjin Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-02-17
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a laser output connects for handing laser welding, include: the flange comprises a main body and a flange body, wherein the main body comprises a straight pipe section and a flange which are integrally formed, and one end surface of the flange body is provided with a positioning pin hole matched with a handheld welding gun and an internal thread hole in threaded connection with the handheld welding gun; the first section of the inner pipe is arranged in the straight pipe section, and the second section of the inner pipe extends out of the straight pipe section; the end cap is arranged at one end inside the inner tube, and one side of the end cap close to the welding surface is provided with two circular truncated cones which are connected into a whole along the axis; the tail sleeve is connected with one end of the straight pipe section; the anti-bending joint is connected with one end of the tail sleeve; and the optical fiber is arranged in the inner pipe, one end of the optical fiber is welded with the welding surface of the end cap, and the optical fiber extends through the tail sleeve and the anti-bending connector. The utility model provides the high laser output connects the cooperation precision with handheld welding rifle, dismantles simple and conveniently, reduces connection failure and the alert probability of wrong report.

Description

Laser output connector for handheld laser welding and optical fiber laser

Technical Field

The utility model relates to a laser instrument technical field especially relates to a laser output connects and fiber laser for handing laser welding.

Background

As lasers are applied more and more widely in welding, cutting and the like, the demand for handheld laser welding is greater and greater. The existing fiber laser mainly adopts a laser output Head QBH (Quartz Block Head) and a locking fixing adapter to be matched for use, and the QBH and a processing application output Head are connected together.

In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: 1. the existing QBH joint has high weight and large size, and the hand-held welding comfort level and flexibility are seriously influenced; 2. the existing QBH joint is easy to generate high return light, and the risk that fixing glue of an end cap is easy to yellow and even burnt cannot meet the production and use requirements; 3. the QBH connects in the use stability not good, appears connecting inefficacy and wrong report police easily, influences the result of use.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent.

Therefore, the utility model aims to provide a small in size, good laser output who is used for handheld laser welding connects and fiber laser of connection stability.

In order to achieve the above object, a first aspect of the present invention provides a laser output connector for handheld laser welding, including:

the welding gun comprises a main body and a welding gun body, wherein the main body comprises a straight pipe section and a flange which are integrally formed, and one end surface of the flange is provided with a positioning pin hole matched with a handheld welding gun and an internal thread hole in threaded connection with the handheld welding gun;

the first section of the inner pipe is arranged in the straight pipe section, and the second section of the inner pipe extends out of the straight pipe section;

the end cap is arranged at one end inside the inner pipe, and one side, close to the welding surface, of the end cap is provided with two circular truncated cones which are integrally connected along an axis;

the tail sleeve is connected with one end of the straight pipe section;

the anti-bending joint is connected with one end of the tail sleeve;

an optical fiber disposed within the inner tube, an end of the optical fiber being fusion spliced to a fusion splice face of the end cap, the optical fiber extending through the boot and the anti-kink joint.

The utility model provides a laser output connects for handing laser welding adopts the locating pin hole to fix a position with the locating pin of handheld welding rifle can pinpoint, adopts internal thread hole and handheld welding rifle threaded connection, has improved the cooperation precision that laser output connects and handheld welding rifle, dismantles simple and conveniently, reduces the probability of connection failure and wrong report police. The utility model discloses a main part adopts integrated into one piece to process the shaping, avoids the error that arouses by the assembly of a plurality of structures among the prior art, and it is fixed directly through the flange with handheld welding rifle body, need not to connect QBH through traditional QBH adapter again, and the flange fitting surface is equipped with the pin locating hole, guarantees concentricity and the fastness after the assembly when the assembly is simple, practice thrift the cost. The utility model discloses an end cap has two round platform structures, can intercept back light better, reduces the heat that back light produced, avoids the end cap fixed glue to become yellow ageing. The utility model discloses compare current adapter connected mode, weight can alleviate, and the whole size can shorten.

According to the utility model discloses an embodiment, the lateral surface of inner tube has the recess, the recess with the sealed coolant liquid that forms of inner wall of straight tube section says, open the upper and lower both sides of flange has a water injection well choke mounting hole, install the water injection well choke on the water injection well choke mounting hole, the water injection well choke with the coolant liquid says the intercommunication.

According to the utility model discloses an embodiment, the end cap with be provided with the antireflection coating on the relative terminal surface of weld surface, the round platform includes first round platform and second round platform, the bottom surface external diameter of first round platform with the external diameter of end cap equals, the top surface external diameter of first round platform is less than the bottom surface external diameter of first round platform, the bottom surface external diameter of second round platform equals the top surface external diameter of first round platform, the top surface external diameter of second round platform is less than the top surface external diameter of second round platform.

According to the utility model discloses an embodiment, the generating line of first round platform is greater than rather than the contained angle of axis the generating line of second round platform rather than the contained angle of axis.

According to the utility model discloses an embodiment, the side of straight tube section is opened has at least one injection hole, the injection hole is used for pouring into glue into the end cap with between the inner tube.

According to the utility model discloses an embodiment, the straight tube section is being close to the both sides of flange all are provided with the external screw thread.

According to an embodiment of the present invention, the flange is provided with a sealing groove on a side end face close to the end cap.

According to an embodiment of the present invention, the end cap is made of quartz or sapphire.

According to an embodiment of the present invention, the optical fiber connector further comprises a glass tube, an inner tube connecting member and a locking gasket, wherein the glass tube is disposed in the inner tube and sleeved on the periphery of the optical fiber, one end of the glass tube abuts against the end cap, the other end of the glass tube abuts against the inner tube connecting member, and the inner tube connecting member is in threaded connection with the second section of the inner tube; the locking gasket is arranged in the tail sleeve and used for fixing the hose and the armor on the outer layer of the optical fiber.

A second aspect of the present invention provides a fiber laser, including a laser output connector for handheld laser welding as described in the first aspect above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. Wherein:

fig. 1 is a schematic structural diagram of a laser output connector for handheld laser welding according to an embodiment of the present invention;

fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic structural view of the main body of fig. 1.

Fig. 4 is a left side view of fig. 3.

Fig. 5 is a water path of the laser output connector for handheld laser welding according to the present invention.

Fig. 6 is a schematic view of the end cap of fig. 1.

Description of reference numerals:

1-a main body, 2-an inner pipe, 3-an end cap, 4-a glass pipe, 5-a water nozzle, 6-a tail sleeve, 7-an inner pipe connecting piece, 8-a locking gasket, 9-an anti-bending joint, 10-an optical fiber, 11-an injection hole, 12-a positioning pin hole, 13-a sealing groove, 14-an external thread, 15-a water nozzle mounting hole, 16-an internal thread hole, 21-a return light, 31-an anti-reflection film, 32-a cylinder, 33-a first circular table, 34-a welding surface, 35-a second circular table, 51-a first water nozzle and 52-a second water nozzle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In connection with fig. 1-6, a first aspect of the present embodiment proposes a laser output connector for handheld laser welding, which includes a main body 1, an inner tube 2, an end cap 3, a tail sleeve 6, an anti-bending connector 9 and an optical fiber 10, wherein:

the main body 1 comprises a straight pipe section and a flange which are integrally formed, and a positioning pin hole 12 matched with a handheld welding gun and an internal thread hole 16 in threaded connection with the handheld welding gun are arranged on one end face of the flange. The first section of the inner tube 2 is arranged inside the straight tube section and the second section extends outside the straight tube section, the first and second sections being continuous. The end cap 3 is arranged at one end inside the inner pipe 2, the end cap 3 is provided with two circular truncated cones (33, 35) which are connected into a whole along an axis at one side close to the welding surface 34, and the end surface of the end cap 3 close to one end of the straight pipe section is a light emergent surface. One end of the tail sleeve 6 is in threaded connection with one end of the straight pipe section far away from the end cap 3. The anti-bending joint 9 is connected with the other end of the tail sleeve 6. The optical fibre 10 is disposed within the inner tube 2 with one end of the optical fibre 10 fused to the fusion-spliced face 34 of the end cap 3, the optical fibre 10 extending through the boot 6 and the anti-kink connector 9.

In one embodiment, the flange has a rectangular cross-section, with rounded corners machined at each corner of the rectangle.

The embodiment of the utility model provides a laser output connects for handing laser welding adopts the locating pin hole to fix a position with the locating pin of handheld welding rifle can pinpoint, adopts internal thread hole and handheld welding rifle threaded connection, has improved the cooperation precision that laser output connects and handheld welding rifle, dismantles simple and conveniently, reduces the probability of connection failure and wrong report police. The utility model discloses a main part adopts integrated into one piece to process the shaping, avoids the error that arouses by the assembly of a plurality of structures among the prior art, and it is fixed directly through the flange with handheld welding rifle body, need not to connect QBH through traditional QBH adapter again, and the flange fitting surface is equipped with the pin locating hole, guarantees concentricity and the fastness after the assembly when the assembly is simple, practice thrift the cost. The utility model discloses an end cap has two round platform structures, can intercept back light better, reduces the heat that back light produced, avoids the end cap fixed glue to become yellow ageing. The utility model discloses compare current adapter connected mode, weight can alleviate, and the whole size can shorten.

In some embodiments, referring to fig. 3, the side of the straight tube section is provided with at least one glue injection hole 11, and the glue injection hole 11 is used for injecting glue between the end cap 3 and the inner tube 2. Glue can fix the inner tube 2 into the straight tube section. The straight pipe section is provided with external threads 14 on two sides close to the flange, and the external threads 14 on one side can be provided with protective glasses caps, so that the end caps can be effectively prevented from being damaged and polluted. The flange is provided with a sealing groove 13 on one end face close to the end cap 3. Sealing groove 13 can install O type circle, is connected the back when main part and handheld welding gun, improves the sealed effect of laser output head and handheld welding gun, can prevent that the dust can get into inside this laser output head.

In some embodiments, with reference to fig. 2 and 5, the outer side surface of the inner pipe 2 is provided with a groove, the groove and the inner wall of the straight pipe section are sealed to form a cooling liquid channel, the upper side and the lower side of the flange are provided with a water nozzle mounting hole 15, a water nozzle 5 is mounted on the water nozzle mounting hole 15, and the water nozzle 5 is communicated with the cooling liquid channel. The water nozzle 5 comprises a first water nozzle 51 and a second water nozzle 52, wherein the first water nozzle 51 is a water inlet, and the second water nozzle is a water outlet. It will be appreciated that the coolant channels may use not only coolant media but also air media. The left end of the groove is located on the periphery of the end cap 3, and the right end of the groove is closer to the right than the water nozzle mounting hole 15, so that the length of the cooling liquid channel is prolonged, the heat dissipation area is increased, and the cooling effect on the end cap is improved.

In some embodiments, referring to fig. 6, the end cap 3 comprises a cylinder 32 and a truncated cone connected together. The end cap 3 is provided with an antireflection film 31 on the light emitting surface, and the antireflection film can improve the light transmittance of the emitted light and reduce the end face reflection. The round platforms comprise a first round platform 33 and a second round platform 35, the outer diameter of the bottom surface of the first round platform 33 is equal to the outer diameter of the end cap 3, the outer diameter of the top surface of the first round platform 33 is smaller than the outer diameter of the bottom surface of the first round platform 33, the outer diameter of the bottom surface of the second round platform 35 is equal to the outer diameter of the top surface of the first round platform, and the outer diameter of the top surface of the second round platform 35 is smaller than the outer diameter of the top surface of the second round platform 35. In one example, an included angle between a generatrix of the first circular truncated cone 33 and an axis thereof is greater than an included angle between a generatrix of the second circular truncated cone 35 and the axis thereof, for example, the included angle between the generatrix of the first circular truncated cone 33 and the axis thereof is 45 degrees, and the included angle between the generatrix of the second circular truncated cone 35 and the axis thereof is 15 degrees, so that the returned light 21 can be effectively intercepted, once the returned light enters the inside of the laser output connector, the laser output connector can be caused to generate heat obviously, and the reliability is further affected. Meanwhile, the requirement on the welding strength of the round table and the optical fiber can be reduced by adopting the design of the included angle. The end cap 3 is made of quartz or sapphire.

In some embodiments, referring to fig. 2, the laser output joint for hand-held laser welding further comprises a glass tube 4, an inner tube coupling 7, and a lock washer 8. Wherein the glass tube 4 is arranged in the inner tube 2 and sleeved on the periphery of the optical fiber 10, one end of the glass tube 4 is abutted against the end cap 3, and the other end of the glass tube 4 is abutted against the inner tube connecting piece 7. The glass tube 4 plays a role of protecting the optical fiber 10, and ensures the surface cleanliness of the optical fiber. The inner tube connector 7 is threadedly coupled to the second section of the inner tube 2, and the inner tube connector 10 is also coated with glue to fix the optical fiber 10 passing therethrough. And a locking washer 8 is arranged in the tail sleeve 6 and used for fixing the hose and the armor cable on the outer layer of the optical fiber 10.

In view of the above-described embodiments, the following describes the assembly process of a laser output joint for hand-held laser welding: 1. fixing the inner tube 2 into the main body 1 using a curing glue; 2. inserting a glass tube 4 into the inner tube 2 from the rear end thereof; 3. welding the end cap 3 and the optical fiber 10 into a whole by using a welding machine, and penetrating the optical fiber 10 into the main body 1 through the front end of the inner tube 2; 4. fixing an inner pipe connecting piece 7 at the tail end of the inner pipe 2 through threads; 5. fixing two water nozzles 5 to the upper and lower sides of the main body 1 respectively; 6. fixing the tail sleeve 6 at the tail end of the main body 1 through threaded connection; 7. the locking washer 8 is arranged in the tail sleeve 6 from the rear end thereof; 8. the anti-bending joint 9 is connected, fixed and locked with the tail sleeve 6 through threads.

In accordance with the above object, a second aspect of the present invention provides a fiber laser, including the above first aspect, a laser output connector for handheld laser welding. The embodiment of the fiber laser can achieve the same or similar effects as the corresponding embodiment of the laser output joint for handheld laser welding.

It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A laser output sub for hand-held laser welding, comprising:

the welding gun comprises a main body (1) and a welding gun body, wherein the main body comprises a straight pipe section and a flange which are integrally formed, and one end face of the flange is provided with a positioning pin hole (12) matched with a handheld welding gun and an internal thread hole (16) in threaded connection with the handheld welding gun;

the inner pipe (2), the first section of the said inner pipe (2) is set up in the said straight pipe section, the second section stretches out the said straight pipe section;

the end cap (3) is arranged at one end inside the inner pipe (2), and two circular truncated cones (33, 35) which are integrally connected along an axis are arranged on one side, close to the welding surface (34), of the end cap (3);

the tail sleeve (6) is connected with one end of the straight pipe section;

the anti-bending joint (9) is connected with one end of the tail sleeve (6);

an optical fiber (10) disposed within the inner tube (2), one end of the optical fiber (10) being fusion spliced to a fusion splicing face (34) of the end cap (3), the optical fiber (10) extending through the boot (6) and the anti-kink joint (9).

2. The laser output connector for handheld laser welding according to claim 1, characterized in that a groove is formed in the outer side surface of the inner pipe (2), the groove and the inner wall of the straight pipe section are sealed to form a cooling liquid channel, a water nozzle mounting hole (15) is formed in the upper side and the lower side of the flange, a water nozzle (5) is mounted on the water nozzle mounting hole (15), and the water nozzle (5) is communicated with the cooling liquid channel.

3. The laser output joint for handheld laser welding according to claim 1, wherein an anti-reflection film (31) is provided on an end face of the end cap (3) opposite to the welding surface (34), the circular truncated cone comprises a first circular truncated cone (33) and a second circular truncated cone (35), an outer diameter of a bottom surface of the first circular truncated cone (33) is equal to an outer diameter of the end cap (3), an outer diameter of a top surface of the first circular truncated cone (33) is smaller than an outer diameter of a bottom surface of the first circular truncated cone (33), an outer diameter of a bottom surface of the second circular truncated cone (35) is equal to the outer diameter of the top surface of the first circular truncated cone, and an outer diameter of a top surface of the second circular truncated cone (35) is smaller than the outer diameter of the top surface of the second circular truncated cone (35).

4. The laser output joint for handheld laser welding according to claim 3, characterized in that the angle of the generatrix of the first circular truncated cone (33) with its axis is larger than the angle of the generatrix of the second circular truncated cone (35) with its axis.

5. Laser output joint for handheld laser welding according to claim 1, characterized in that the straight tube section is flanked by at least one glue injection hole (11), said glue injection hole (11) being used for injecting glue between the end cap (3) and the inner tube (2).

6. Laser output joint for handheld laser welding according to claim 1, characterized in that the straight tube section is provided with an external thread (14) on both sides close to the flange.

7. Laser output joint for handheld laser welding according to claim 1, characterized in that the flange is provided with a sealing groove (13) on one side end face close to the end cap (3).

8. Laser output joint for handheld laser welding according to claim 1, characterized in that the end cap (3) is made of quartz or sapphire.

9. The laser output joint for handheld laser welding according to any one of claims 1 to 8, characterized by further comprising a glass tube (4), an inner tube connecting piece (7) and a locking gasket (8), wherein the glass tube (4) is arranged in the inner tube (2) and is sleeved on the periphery of the optical fiber (10), one end of the glass tube (4) abuts against the end cap (3), the other end of the glass tube (4) abuts against the inner tube connecting piece (7), and the inner tube connecting piece (7) is in threaded connection with the second section of the inner tube (2); the locking gasket (8) is arranged in the tail sleeve (6) and used for fixing the hose and the armor on the outer layer of the optical fiber (10).

10. A fiber laser comprising a laser output joint for handheld laser welding according to any of claims 1-9.