CN212009175U - Ring spot laser light path structure and laser welding machine - Google Patents
Ring spot laser light path structure and laser welding machine Download PDFInfo
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- CN212009175U CN212009175U CN202020858778.7U CN202020858778U CN212009175U CN 212009175 U CN212009175 U CN 212009175U CN 202020858778 U CN202020858778 U CN 202020858778U CN 212009175 U CN212009175 U CN 212009175U
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Abstract
The utility model discloses a ring spot laser light path structure, include: a laser for emitting a laser beam; the first reflecting piece is arranged on a light path of a laser beam emitted by the laser; the second reflecting piece is arranged in parallel with and opposite to the first reflecting piece; the first reflecting piece and the second reflecting piece are fixedly arranged on the rotating piece; the driving piece is connected with the rotating piece and used for driving the rotating piece to rotate around the light path of the laser beam emitted by the laser; gather the light piece, gather the light path of the laser beam that the second reflector reflected is located to the light piece, and the laser beam that the second reflector reflected shines through a splice point after gathering through the spotlight piece, the utility model discloses technical scheme provides a ring spot laser light path, makes the thermal field distribute and expands to the two-dimentional from the one-dimensional, can improve the thermal field homogeneity.
Description
Technical Field
The utility model relates to a heat sealing machine field, in particular to spot laser light path structure and laser heat sealing machine.
Background
The optical fiber fusion splicer is mainly used for processing optical fiber devices in optical communication, and generally has the working principle that: when the sections of the two optical fibers are melted by using the high-voltage electric arc, the two optical fibers are gently pushed by using a high-precision motion mechanism, so that the two optical fibers are fused into one fiber, and the coupling of an optical fiber mode field is realized.
Most of the existing laser welding machines adopt two beams of laser to weld optical fibers, when the diameter of the optical fiber needing to be welded is larger than 1mm, the phenomenon of uneven distribution of a thermal field starts to be obvious, and the cross section of the optical fiber after welding is an oval fusion surface instead of circular symmetry. With the development of industrial application, more and more optical fibers with fusion diameter larger than 1mm are applied, so that the scheme of only two-beam laser fusion cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ring spot laser light path structure and laser welding machine aims at providing a ring spot laser light path, makes the thermal field distribute and extends to the two-dimentional from the one-dimensional, improves the thermal field homogeneity.
In order to achieve the above object, the utility model provides a ring spot laser light path structure, include: a laser for emitting a laser beam; the first reflecting piece is arranged on a light path of a laser beam emitted by the laser; the second reflecting piece is arranged in parallel with and opposite to the first reflecting piece; the first reflecting piece and the second reflecting piece are fixedly arranged on the rotating piece; the driving piece is connected with the rotating piece and used for driving the rotating piece to rotate around the light path of the laser beam emitted by the laser; and the light condensing part is arranged on a light path of the laser beam reflected by the second reflecting part, and the laser beam reflected by the second reflecting part is converged by the light condensing part and then passes through a welding point.
Optionally, a light beam adjusting assembly is further disposed between the second light reflecting member and the light condensing member, the light beam adjusting assembly is disposed on a light path of the laser beam reflected by the second light reflecting member, the light condensing member is disposed on a light path of the laser beam reflected by the light beam adjusting assembly, and the light beam adjusting assembly is configured to compensate for errors of an incident angle and an incident position of the laser beam incident on the light condensing member.
Optionally, the beam conditioning assembly comprises: the third reflector is arranged on the light path of the laser beam reflected by the second reflector; the fourth reflecting piece is arranged on the light path of the laser beam reflected by the third reflecting piece, and the condensing piece is arranged on the light path of the laser beam reflected by the fourth reflecting piece; and the third reflecting piece and the fourth reflecting piece are both provided with angle adjusting frames.
Optionally, a fifth reflecting piece is further disposed between the light beam adjusting assembly and the light condensing piece, the fifth reflecting piece is disposed on a light path of the laser beam reflected by the fourth reflecting piece, and the light condensing piece is disposed on a light path of the laser beam reflected by the fifth reflecting piece.
Optionally, the light collector is an annular conical reflector.
Optionally, a feeding hole for the optical fiber to pass through is formed in the center of the annular conical reflector.
Optionally, the reflector is a planar reflector.
Optionally, the rotating member is a rotating disc, the first reflecting member and the second reflecting member are both fixedly arranged on the surface of the rotating disc, the laser is arranged on one side of the rotating disc, which is far away from the first reflecting member and the second reflecting member, and the rotating disc is provided with an entry hole along the rotation axis, through which a laser beam emitted by the laser passes.
Optionally, the driving member is a motor, and an output shaft of the motor is connected with the rotating member.
The utility model also provides a laser fusion splicer, including foretell ring spot laser light path structure, still include: the annular spot laser light path structure is arranged on the machine table; the optical fiber clamp is used for clamping an optical fiber; and the driving module is arranged on the machine table and connected with the optical fiber clamp for driving the optical fiber clamp to move so that the part of the optical fiber needing to be welded is located at the position of the welding point.
The technical scheme of the utility model adopt and set up parallel first reflection of light spare and the second reflection of light spare in opposite directions and carry out the continuous reflection to the laser beam that the laser instrument jetted out on rotating the piece, and rotate the piece when rotatory at the driving piece drive, along with rotating a synchronous revolution, the laser beam that makes the outgoing forms the space light beam that cross sectional shape is hollow ring, and the spotlight effect through gathering the piece jets through a splice point, treat that the fused optic fibre forms round annular facula on the surface, make the regional no longer be limited several laser beams of directive fusion splice, but all have laser beam directive fusion splice region on the plane of perpendicular to fusion splice region, thereby form even thermal field. The ring spot laser beam makes the thermal field distribute from one-dimensional expansion to two-dimentional, and the thermal field homogeneity promotes greatly, and the optic fibre cross-section after the butt fusion is more even, can be fit for being used for the optic fibre of butt fusion major diameter, and the suitability is stronger, and the butt fusion homogeneity is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the ring spot laser optical path structure of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
60 | Fourth reflecting |
| 20 | First reflecting |
70 | Fifth reflecting |
| 30 | Second reflecting |
80 | |
| 40 | |
81 | |
| 50 | Third reflecting part |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a ring spot laser light path structure.
In the embodiment of the present invention, as shown in fig. 1, the ring spot laser optical path structure includes: a laser 10, the laser 10 being for emitting a laser beam; a first reflector 20, the first reflector 20 being disposed on a light path of a laser beam emitted from the laser 10; the second reflector 30, the second reflector 30 and the first reflector 20 are arranged oppositely in parallel; a rotating member (not shown) to which the first reflecting member 20 and the second reflecting member 30 are fixed; a driving member 40, wherein the driving member 40 is connected to the rotating member and is used for driving the rotating member to rotate around the optical path of the laser beam emitted by the laser 10; and the light gathering piece 80, the light gathering piece 80 is arranged on the light path of the laser beam reflected by the second reflecting piece 30, and the laser beam reflected by the second reflecting piece 30 is converged by the light gathering piece 80 and then is emitted through a welding point.
Typically, the laser 10 is CO2Laser 10, CO2Laser 10 for emitting CO2Laser beam, CO2The laser is a molecular laser, and the main substance is carbon dioxide molecules, so that the laser has relatively high power and relatively high energy conversion efficiency. The CO2 laser 10 emits a nearly parallel beam of CO2 laser light, shown as a straight line of some width in the figure.
The technical scheme of the utility model in, the light path of the laser beam that laser instrument 10 jetted out is located to first reflector 20, second reflector 30 sets up with first reflector 20 parallel in opposite directions, the reflection of light face of second reflector 30 is relative with the reflection of light face of first reflector 20 promptly, then, the reflection of light face of the laser beam directive first reflector 20 that laser instrument 10 jetted out, the reflection of light face of directive second reflector 30 after the reflection of first reflector 20, and jet out after the reflection of second reflector 30.
Moreover, the first reflecting part 20 and the second reflecting part 30 are both fixedly arranged on the rotating part, the driving part 40 is connected with the rotating part and is used for driving the rotating part to rotate around the optical path of the laser beam emitted by the laser 10, then, when the driving part 40 drives the rotating part to rotate, the first reflecting part 20 and the second reflecting part 30 synchronously rotate, and the emitted laser beam forms a space light beam with a hollow circular section shape after being continuously reflected by the continuously rotating first reflecting part 20 and the second reflecting part 30.
In addition, the light-gathering member 80 is disposed on the light path of the laser beam reflected by the second light-reflecting member 30, the laser beam reflected by the second light-reflecting member 30 is converged by the light-gathering member 80 and then passes through a welding point, so that the emitted spatial light beam is emitted to the light-gathering surface of the light-gathering member 80, the light-gathering member 80 converges the spatial light beam in the welding area, that is, the spatial light beam is emitted through a common welding point, a ring of annular light spots are formed on the surface of the optical fiber to be welded, and the optical fiber to be welded is heated and softened by the converged spatial light beam in the welding area, so as to realize welding.
Compared with the prior art, the technical scheme of the utility model among, the regional no longer be limited several laser beams of directive fusion, but all have laser beam directive fusion regional in all directions in the plane of perpendicular to fusion bonding region to form even thermal field. The ring spot laser beam makes the thermal field distribute from one-dimensional expansion to two-dimentional, and the thermal field homogeneity promotes greatly, and the optic fibre cross-section after the butt fusion is more even, can be fit for being used for the optic fibre of butt fusion major diameter, and the suitability is stronger, and the butt fusion effect is better.
Therefore, the technical scheme of the utility model adopt and set up parallel first reflection of light piece 20 and the second reflection of light piece 30 in opposite directions and carry out continuous reflection to the laser beam that laser instrument 10 jetted out on rotating the piece, and when driving piece 40 drive rotated the piece rotatory, along with rotating a synchronous revolution, the laser beam that makes the outgoing forms the space light beam that cross sectional shape is hollow ring, and the spotlight effect through spotlight piece 80 shoots through a splice point, treat that the welded optic fibre forms round annular facula on the surface, make several limited laser beams no longer of directive fusion bonding region, but all have laser beam directive fusion bonding region on all directions in the plane of perpendicular to fusion bonding region, thereby form even thermal field. The ring spot laser beam makes the thermal field distribute from one-dimensional expansion to two-dimentional, and the thermal field homogeneity promotes greatly, and the optic fibre cross-section after the butt fusion is more even, can be fit for being used for the optic fibre of butt fusion major diameter, and the suitability is stronger, and the butt fusion homogeneity is better.
Further, a light beam adjusting assembly is further disposed between the second reflector 30 and the light condensing member 80, the light beam adjusting assembly is disposed on the light path of the laser beam reflected by the second reflector 30, the light condensing member 80 is disposed on the light path of the laser beam reflected by the light beam adjusting assembly, and the light beam adjusting assembly is configured to compensate errors of the incident angle and the incident position of the laser beam incident on the light condensing member 80.
In the actual installation process of the laser 10, the first reflector 20, the second reflector 30, the rotating member, the driving member 40 and the light gathering member 80, due to human factors, mechanical errors inevitably exist, so that when a space beam formed by continuously reflecting a laser beam emitted from the laser 10 by the first reflector 20 and the second reflector 30 is emitted to the light gathering surface of the light gathering member 80, the deviation of an incident angle and an incident position exists, that is, the annular space beam is not emitted to the light gathering surface of the light gathering member 80 according to a preset accurate angle and an accurate position, which causes the deviation of a welding point of the laser beam emitted after being condensed by the light gathering member 80, thereby affecting the welding effect.
In order to overcome the above problems, in this embodiment, a beam adjustment assembly is additionally disposed between the two light reflecting members and the light condensing member 80 for compensating errors of an incident angle and an incident position of a laser beam incident on the light condensing member 80, so as to ensure that the laser beam emitted by the first light reflecting member 20 and the second light reflecting member 30 can be accurately emitted to the light condensing member 80 according to a preset incident angle and an incident position, so that a welding point through which the laser beam passes is highly concentrated, thereby ensuring a good welding effect.
Specifically, the beam conditioning assembly includes: a third reflector 50, the third reflector 50 being disposed on the light path of the laser beam reflected by the second reflector 30; a fourth reflector 60, the fourth reflector 60 being disposed on the optical path of the laser beam reflected by the third reflector 50, and the light collector 80 being disposed on the optical path of the laser beam reflected by the fourth reflector 60; and, the third reflector 50 and the fourth reflector 60 are provided with angle adjusting brackets.
In order to enable the laser beams emitted by the first reflector 20 and the second reflector 30 to accurately emit to the light gathering member 80 according to the preset incident angle and the preset incident position, the light beam adjusting assembly is specifically configured to include a third reflector 50 and a fourth reflector 60, the third reflector 50 is arranged on the light path of the laser beams reflected by the second reflector 30, the light gathering member 80 is arranged on the light path of the laser beams reflected by the fourth reflector 60, and the third reflector 50 and the fourth reflector 60 are both provided with angle adjusting frames. The third reflector 50 and the fourth reflector 60 with the angle adjusting bracket can respectively adjust their angles, and the third reflector and the fourth reflector can be used in cooperation with each other to adjust the incident angle and the incident position of the laser beam incident on the light condensing member 80, thereby compensating the deviation of the incident angle and the incident position of the laser beam.
Optionally, a fifth reflector 70 is further disposed between the beam adjusting assembly and the light condensing element 80, the fifth reflector 70 is disposed on the light path of the laser beam reflected by the fourth reflector 60, and the light condensing element 80 is disposed on the light path of the laser beam reflected by the fifth reflector 70.
The fifth reflecting member 70 is fixedly disposed relative to the light collecting member 80, and mainly functions to change the optical path direction of the laser beam, so that the laser beam horizontally irradiates the light collecting member 80, and a driving mechanism and an optical fiber clamp on the fusion splicer are conveniently disposed, so that the optical fiber can be horizontally and easily clamped.
Optionally, the light collector 80 is an annular conical reflector.
The light-gathering component 80 in this embodiment is an annular conical reflector, and of course, other light-gathering components may be used, and the present invention is not limited thereto.
Furthermore, a feeding hole 81 for the optical fiber to pass through is formed in the center of the annular conical reflector.
Because the annular space light beam is received to the mirror surface one side of annular conical surface speculum, be not convenient for set up actuating mechanism and fiber clamp, in order to make optic fibre can conveniently enter into the butt fusion region, pan feeding hole 81 that supplies optic fibre to pass is seted up at the center of annular conical surface speculum to this embodiment, and when the butt fusion, optic fibre is followed the through-hole and is penetrated from the one side that the annular conical surface speculum deviates from the mirror surface, enters into the focus of annular conical surface speculum and is in the butt fusion region promptly.
Optionally, the reflector is a planar reflector.
The reflecting piece in this embodiment adopts the plane reflector, of course, also can adopt other reflecting device, the utility model discloses do not do the restriction.
Further, the rotating member is a rotating disc, the first reflecting member 20 and the second reflecting member 30 are both fixedly arranged on the surface of the rotating disc, the laser 10 is arranged on one side of the rotating disc, which is far away from the first reflecting member 20 and the second reflecting member 30, and the rotating disc is provided with an entrance hole along the rotation axis, through which the laser beam emitted by the laser 10 passes.
The first light reflecting piece 20 and the second light reflecting piece 30 are fixedly arranged on the surface of the rotary disc and can rotate along with the rotation of the rotary disc, the laser 10 is arranged on one side of the rotary disc, which is far away from the first light reflecting piece 20 and the second light reflecting piece 30, in order to enable the laser beam emitted by the laser 10 to reach the first light reflecting piece 20, an entrance hole for the laser beam emitted by the laser 10 to pass through is formed in the rotary disc along the rotation axis, and the laser beam emitted by the laser 10 is convenient to irradiate to the first light reflecting piece 20.
Alternatively, the driving member 40 is a motor, and an output shaft of the motor is connected to the rotating member.
The driving member 40 in this embodiment is a motor, an output shaft of the motor is connected to the hollow rotating shaft of the rotating disc through a transmission member such as a gear, when the motor works, the rotating disc is driven to rotate through the gear, and the hollow structure of the rotating shaft forms an entrance hole for the laser beam emitted by the laser 10 to pass through and emit to the first reflecting member 20. Of course, other driving devices can be used for the driving member 40, and the present invention is not limited thereto.
The utility model also provides a laser heat sealing machine, this laser heat sealing machine includes foretell ring spot laser light path structure, still includes: the annular spot laser light path structure is arranged on the machine table; the optical fiber clamp is used for clamping an optical fiber; and the driving module is arranged on the machine table and connected with the optical fiber clamp for driving the optical fiber clamp to move so that the part of the optical fiber needing to be welded is located at the position of the welding point. The specific structure of the ring spot laser optical path structure refers to the above embodiments, and since the laser fusion splicer adopts all the technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated herein.
The laser 10 is installed at the lower part of the machine table, the other parts of the ring spot laser light path structure are installed on the table top of the machine table, a through hole is arranged on the machine table, and a laser beam emitted by the laser 10 passes through the through hole from the lower part of the machine table to be emitted towards the upper part of the machine table, passes through the incident hole of the turntable and is emitted to the reflecting surface of the first reflecting piece 20. The optical fiber to be processed is clamped and fixed by the optical fiber clamp and moves towards the welding area under the driving action of the driving mechanism, so that the optical fiber is welded in the welding area. The concrete structure setting of laser welding machine can adopt prior art, the utility model discloses do not prescribe a limit to, do not give unnecessary detail here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A speckle laser optical path structure, comprising:
a laser for emitting a laser beam;
the first reflecting piece is arranged on a light path of a laser beam emitted by the laser;
the second light reflecting piece is arranged in parallel and opposite to the first light reflecting piece;
the first light reflecting piece and the second light reflecting piece are fixedly arranged on the rotating piece;
the driving piece is connected with the rotating piece and used for driving the rotating piece to rotate around the light path of the laser beam emitted by the laser;
and the light gathering piece is arranged on a light path of the laser beam reflected by the second reflecting piece, and the laser beam reflected by the second reflecting piece is converged by the light gathering piece and then passes through a welding point.
2. The structure of claim 1, wherein a beam adjustment assembly is disposed between the second reflective member and the light gathering member, the beam adjustment assembly is disposed on the optical path of the laser beam reflected by the second reflective member, the light gathering member is disposed on the optical path of the laser beam reflected by the beam adjustment assembly, and the beam adjustment assembly is configured to compensate for the errors of the incident angle and the incident position of the laser beam incident on the light gathering member.
3. The annular spot laser optical path structure of claim 2, wherein the beam conditioning assembly comprises:
the third reflector is arranged on the light path of the laser beam reflected by the second reflector;
the fourth light reflecting piece is arranged on a light path of the laser beam reflected by the third light reflecting piece, and the light condensing piece is arranged on a light path of the laser beam reflected by the fourth light reflecting piece;
and the third reflecting piece and the fourth reflecting piece are both provided with angle adjusting frames.
4. The structure of claim 3, wherein a fifth reflector is disposed between the beam conditioning assembly and the light collector, the fifth reflector being disposed in the optical path of the laser beam reflected by the fourth reflector, and the light collector being disposed in the optical path of the laser beam reflected by the fifth reflector.
5. The annular spot laser optical path structure of any one of claims 1 to 4, wherein the light condensing member is an annular conical reflector.
6. The structure of claim 5, wherein the center of the ring spot laser optical path has a feeding hole for the optical fiber to pass through.
7. The annular spot laser optical path structure according to any one of claims 1 to 4, wherein the light reflecting member is a planar mirror.
8. The structure of any one of claims 1 to 4, wherein the rotating member is a rotating disc, the first light reflecting member and the second light reflecting member are both fixed on the surface of the rotating disc, the laser is disposed on a side of the rotating disc facing away from the first light reflecting member and the second light reflecting member, and the rotating disc is provided with an entrance hole along a rotation axis through which a laser beam emitted by the laser passes.
9. The annular spot laser optical path structure of any one of claims 1 to 4, wherein the driving member is a motor, and an output shaft of the motor is connected to the rotating member.
10. A laser fusion splicer, comprising the annular spot laser optical path structure according to any one of claims 1 to 9, further comprising:
the annular spot laser light path structure is arranged on the machine table;
the optical fiber clamp is used for clamping an optical fiber;
and the driving module is arranged on the machine table, is connected with the optical fiber clamp and is used for driving the optical fiber clamp to move so that the part of the optical fiber needing to be welded is positioned at the welding point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020858778.7U CN212009175U (en) | 2020-05-20 | 2020-05-20 | Ring spot laser light path structure and laser welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020858778.7U CN212009175U (en) | 2020-05-20 | 2020-05-20 | Ring spot laser light path structure and laser welding machine |
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| Publication Number | Publication Date |
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| CN212009175U true CN212009175U (en) | 2020-11-24 |
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| CN202020858778.7U Active CN212009175U (en) | 2020-05-20 | 2020-05-20 | Ring spot laser light path structure and laser welding machine |
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| CN (1) | CN212009175U (en) |
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