CN215328361U - Divide whitewashed nozzle adjusting part and laser beam machining head - Google Patents

Abstract

The utility model discloses a powder distributing nozzle adjusting assembly and a laser processing head, and belongs to the technical field of laser processing. The laser processing head comprises a powder distribution nozzle adjusting assembly, the powder distribution nozzle adjusting assembly is used for adjusting the position of a powder distribution nozzle and comprises a Z-axis driving piece, an X-axis driving piece and an R-axis driving piece, the X-axis driving piece is connected to an execution end of the Z-axis driving piece through a first connecting plate, and the Z-axis driving piece can drive the X-axis driving piece to move along the Z-axis direction and can be fixed at any position; r axle driving piece passes through the second connecting plate and connects in the execution end of X axle driving piece, and X axle driving piece can drive R axle driving piece and remove and can fix in the optional position along X axle direction, divides the powder nozzle to connect in the execution end of R axle driving piece, and R axle driving piece can drive and divide the powder nozzle to rotate around the Y axle and can fix in the optional position. After the position and the angle of the powder distribution nozzle are adjusted simultaneously, the powder distribution nozzle can be stably fixed, so that the cladding effect is improved, and the processing quality is improved.

Description

Divide whitewashed nozzle adjusting part and laser beam machining head

Technical Field

The utility model relates to the technical field of laser processing, in particular to a powder separating nozzle adjusting assembly and a laser processing head.

Background

The laser processing head is divided into a transmission type laser processing head and a reflection type laser processing head, the reflection type lens is generally made of copper materials, the heat conductivity of copper is good, the performance is stable, the reflection type laser processing head is more stable relative to a transmission quartz lens, the reflection type laser processing head is not easy to burn out and can bear high power, and the laser processing head is developed in the direction of high power in the laser industry at present, so that the application of the reflection type laser processing head is more and more extensive.

In the existing reflective cladding laser processing head, when the position of the powder distribution nozzle is adjusted, the position of the powder distribution nozzle is adjusted through a plurality of adjusting rods which are sequentially hinged, the position of the powder distribution nozzle cannot be stably maintained after being adjusted, and the powder distribution nozzle cannot be conveniently adjusted at any angle.

SUMMERY OF THE UTILITY MODEL

One objective of the present invention is to provide a powder distributing nozzle adjusting assembly, which can facilitate adjusting the position of the powder distributing nozzle, and improve the stability of adjusting the position of the powder distributing nozzle.

The utility model also aims to provide a laser processing head, which can accurately adjust the position of the powder distribution nozzle and improve the processing quality by arranging the powder distribution nozzle adjusting assembly.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a powder distribution nozzle adjustment assembly for adjusting the position of a powder distribution nozzle, comprising:

a Z-axis drive member;

the X-axis driving piece is connected to the execution end of the Z-axis driving piece through a first connecting plate, and the Z-axis driving piece can drive the X-axis driving piece to move along the Z-axis direction and can be fixed at any position; and

r axle driving piece, R axle driving piece pass through the second connecting plate connect in the execution end of X axle driving piece, X axle driving piece can drive R axle driving piece removes and can fix in optional position along X axle direction, divide the powder nozzle connect in the execution end of R axle driving piece, R axle driving piece can drive divide the powder nozzle around Y axle rotation and can fix in optional position.

Optionally, the Z-axis drive comprises:

the first rack is arranged along the Z-axis direction;

the first sliding block is connected to the first rack in a sliding mode; and

and the first gear shaft is rotationally connected to the first sliding block and meshed with the first rack.

Optionally, the first rack comprises a first base and a first boss arranged on one side of the first base, the first boss is dovetail-shaped, and teeth are convexly arranged on the first boss;

and a first sliding groove in sliding fit with the first boss is formed in the first sliding block.

Optionally, the X-axis drive comprises:

the second rack is connected to the first connecting plate;

the second sliding block is connected to the second rack in a sliding mode; and

and the second gear shaft is rotationally connected to the second sliding block and is meshed with the second rack.

Optionally, the second rack comprises a second base and a second boss arranged on one side of the second base, the second boss is dovetail-shaped, and teeth are convexly arranged on the second boss;

and a first sliding groove in sliding fit with the second boss is formed in the second sliding block.

Optionally, the R-axis driver comprises:

the base plate is connected to the execution end of the X-axis driving piece;

a turntable rotatably connected to the base plate; and

and the rotary driving module is connected to the base plate and can drive the rotary table to rotate around the Y axis.

Optionally, one side protrusion of revolving stage is provided with the portion of suppressing, the rotation driving module includes:

the mounting seat is connected to the substrate, two lugs are arranged on one side of the mounting seat at intervals, and the pressing part is located between the two lugs; and

the micrometer screw rod of the micrometer is connected with one of the two lugs, the measuring anvil of the micrometer is connected with the other lug, and the pressing part is positioned between the micrometer screw rod and the measuring anvil.

The utility model provides a laser processing head, includes by one end to the other end optical fiber interface, first protection device, collimating device, focusing device, second protection device and the nozzle device that sets gradually, the nozzle device include air knife subassembly, foretell minute powder nozzle adjusting part with divide the powder nozzle, the air knife subassembly connect in second protection device, divide powder nozzle adjusting part to set up one side of air knife subassembly, divide the powder nozzle connect in divide powder nozzle adjusting part's execution end.

Optionally, the powder distribution nozzle is a single-line powder feeding nozzle or a wide powder feeding nozzle.

Optionally, when the powder distribution nozzle is a single-line powder feeding nozzle, the powder distribution nozzle includes:

the inner powder feeding pipe is used for conveying cladding materials;

the outer sleeve is sleeved on the inner powder feeding pipe and connected to the execution end of the powder distributing nozzle adjusting assembly, two ends of the outer sleeve are hermetically connected with the inner powder feeding pipe, and a cooling cavity is formed between the inner wall of the outer sleeve and the outer wall of the inner powder feeding pipe.

The utility model has the beneficial effects that:

the powder distribution nozzle adjusting assembly comprises a Z-axis driving piece, an X-axis driving piece and an R-axis driving piece, the powder distribution nozzle is adjusted in the vertical direction and can be fixed at any position through the arrangement of the Z-axis driving piece, the powder distribution nozzle is adjusted in the horizontal direction and can be fixed at any position through the arrangement of the X-axis driving piece, the position of the powder distribution nozzle relative to a laser beam is convenient to adjust, the inclination angle of the powder distribution nozzle can be adjusted and can be fixed at any position through the arrangement of the X-axis driving piece, the inclination angle of a cladding material of the powder distribution nozzle relative to the laser beam is convenient to adjust, and after the position and the angle of the powder distribution nozzle are adjusted, the powder distribution nozzle can be stably fixed, so that the cladding effect can be improved, and the processing quality is improved.

According to the laser processing head, the powder distributing nozzle adjusting assembly is arranged, so that the position of the powder distributing nozzle can be accurately adjusted, and the processing quality is improved.

Drawings

FIG. 1 is a schematic side view of a laser processing head with a nozzle arrangement removed in accordance with an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic perspective view of a laser processing head provided with a wide powder feed nozzle according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a laser processing head with a single line powder feed nozzle in accordance with an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a first perspective view of a single line powder delivery nozzle and a powder distribution nozzle adjustment assembly according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a second perspective view of a single line powder delivery nozzle and a powder distribution nozzle adjustment assembly in accordance with an embodiment of the present invention;

FIG. 7 is an exploded view of a Z-axis driver provided by an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a single line powder delivery nozzle according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view taken at E-E in FIG. 8;

FIG. 10 is an exploded view of a first adjustment mechanism provided in accordance with an embodiment of the present invention;

fig. 11 is an exploded view of a first adapter, a focusing device and a third protection device according to an embodiment of the present invention;

FIG. 12 is a schematic side view of a first adapter, a focusing device and a third protector according to an embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view taken along line B-B of FIG. 12;

fig. 14 is an exploded view of a second transition device and a second protective device according to an embodiment of the present invention;

FIG. 15 is a schematic side view of a second adapter and a second protector according to an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view taken at C-C in FIG. 15;

FIG. 17 is a schematic side view of a second adjustment mechanism provided in accordance with an embodiment of the present invention;

FIG. 18 is a schematic cross-sectional view taken at D-D in FIG. 17;

FIG. 19 is an exploded view of a second adjustment mechanism provided in accordance with an embodiment of the present invention;

figure 20 is a schematic perspective view of an air knife assembly according to an embodiment of the present invention.

In the figure:

1. an optical fiber interface;

2. a first protection device; 21. a first protective lens base; 22. a first protective mirror;

3. a collimating device; 31. a collimating base; 311. a first channel; 312. a second channel; 313. a circular ring; 32. a collimating copper mirror;

4. a focusing device; 41. a focus mount; 411. a third channel; 412. a fourth channel; 42. a focusing copper mirror;

5. a second protection device; 51. a connecting seat; 52. a second protective lens base; 53. a second protective glass;

6. a nozzle device; 61. an air knife assembly; 611. a gas knife holder; 612. an air blowing base; 6121. a slit; 613. a lower baffle plate; 62. a powder distributing nozzle adjusting component; 621. a Z-axis drive member; 6211. a first rack; 62111. a first base; 62112. a first boss; 6212. a first slider; 62121. a first chute; 6213. a first gear shaft; 622. a first connecting plate; 623. an X-axis drive member; 624. a second connecting plate; 625. an R-axis driving member; 6251. a substrate; 6252. a turntable; 6253. a rotation driving module; 62531. a mounting seat; 62532. a lug; 62533. a micrometer; 63. a powder distributing nozzle; 631. An inner powder feeding pipe; 632. a jacket; 633. a cooling chamber;

7. a first adjusting device; 71. a fourth adjusting seat; 711. a first mounting groove; 72. a third drive assembly; 721. a third drive knob; 722. a third elastic member; 73. a fifth adjusting seat; 731. a second mounting groove; 74. a fourth drive assembly; 741. a fourth drive knob; 742. a fourth elastic member; 75. a sixth adjusting seat; 76. a third guide assembly; 77. a fourth guide assembly;

8. a first cooling device; 81. a first mounting seat; 82. a first cooling channel;

9. a second cooling device; 91. a second mounting seat; 92. a second cooling channel;

10. a first switching device; 101. a first adapter; 1011. a first notch; 102. a first clasping ring;

11. a third protection device; 111. a third protective lens base; 112. a third protective glass;

12. a nozzle adjustment device; 121. an adjustment sleeve; 122. a first adjusting seat; 123. a second adjusting seat; 124. a third adjusting seat; 125. a first drive assembly; 1251. a first drive knob; 1252. a first elastic member; 126. a second drive assembly; 1261. a second drive knob; 1262. a fourth elastic member; 127. a locking assembly; 1271. locking the nut; 1272. locking a ring; 128. a first guide assembly; 129. A second guide assembly;

13. a second switching device; 131. a second adapter; 1311. a second notch; 132. a second clasping ring; 133. an inner ring of gas; 1331. air holes; 134. an airflow ring;

14. and a distributor.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the attached fig. 1-20.

The present embodiment provides a laser processing head, as shown in fig. 1 to 4, which includes an optical fiber interface 1, a first adjusting device 7, a first protection device 2, a collimating device 3, a focusing device 4, a second protection device 5, a nozzle adjusting device 12, and a nozzle device 6, which are arranged in this order from one end to the other end.

As shown in fig. 1 and 2, one end of the first adjusting device 7 is connected to the optical fiber interface 1, and the other end is connected to the first protection device 2, and the first adjusting device 7 can drive the optical fiber interface 1 to move along the second direction and the first direction perpendicular to the second direction. The position of the optical fiber interface 1 is adjusted through the first adjusting device 7, so that the position of a laser incidence point can be adjusted, the deviation between the laser incidence point and the central optical axis of the collimating device 3 is reduced, the shape of a light spot output from the nozzle device 6 is further adjusted, the quality of a laser beam is improved, and the processing quality is improved.

Further, as shown in fig. 2 and 10, the first adjusting device 7 includes a fourth adjusting seat 71, a third driving assembly 72, a fifth adjusting seat 73, a fourth driving assembly 74 and a sixth adjusting seat 75, the fourth adjusting seat 71 is connected to the first protecting device 2, the third driving assembly 72 is connected to the fourth adjusting seat 71, the fifth adjusting seat 73 is movably connected to the fourth adjusting seat 71, the third driving assembly 72 can drive the fifth adjusting seat 73 to move along the first direction relative to the fourth adjusting seat 71, the sixth adjusting seat 75 is movably connected to the fourth adjusting seat 73, the fourth driving assembly 74 is connected to the fifth adjusting seat 73, and the fourth driving assembly 74 can drive the sixth adjusting seat 75 to move along the second direction. It can be understood that when the third driving assembly 72 drives the fifth adjusting seat 73 to move along the second direction, the fifth adjusting seat 73 can drive the sixth adjusting seat 75 and the optical fiber interface 1 to move along the second direction, and when the fourth driving assembly 74 drives the sixth adjusting seat 75 to move along the first direction, the sixth adjusting seat 75 can drive the optical fiber interface 1 to move along the first direction.

In order to make the structure of the first adjusting device 7 more compact, a first mounting groove 711 is opened on one side of the fourth adjusting seat 71 facing the fifth adjusting seat 73, and one end of the fifth adjusting seat 73 facing the fourth adjusting seat 71 is movably mounted in the first mounting groove 711. A second mounting groove 731 is formed in one side of the fifth adjusting seat 73 facing the sixth adjusting seat 75, and one end of the sixth adjusting seat 75 facing the fifth adjusting seat 73 is movably mounted in the second mounting groove 731.

As shown in fig. 10, the third driving assembly 72 includes a third driving knob 721 and a third elastic member 722, the third driving knob 721 and the third elastic member 722 are respectively located at two opposite sides of the fifth adjusting seat 73, the third elastic member 722 is located in the first mounting groove 711, and two ends of the third elastic member are respectively abutted against a groove wall of the first mounting groove 711 and an outer wall of the fifth adjusting seat 73, the third driving knob 721 penetrates through a sidewall of the fourth adjusting seat 71 and is connected to the fifth adjusting seat 73, and the third driving knob 721 is in threaded connection with the fourth adjusting seat 71, and by rotating the third driving knob 721, the third driving knob 721 can move relative to the fourth adjusting seat 71 and drive the fifth adjusting seat 73 to move relative to the fourth adjusting seat 71, and at the same time, under the action of elastic force applied to the fifth adjusting seat 73 by the third elastic member 722, the fifth adjusting seat 73 can be kept stable relative to the fourth adjusting seat 71. In some alternative embodiments, the third elastic member 722 is a spring. Of course, those skilled in the art can select the structure of the third elastic member 722 according to the needs, and is not limited herein. Further, a first positioning groove is formed in a side wall of the first mounting groove 711, and one end of the third elastic member 722 is located in the first positioning groove, so that the third elastic member 722 can be stably held between a groove wall of the first mounting groove 711 and an outer wall of the fifth adjusting seat 73.

As shown in fig. 10, the fourth driving assembly 74 includes a fourth driving knob 741 and a fourth elastic member 742, the fourth driving knob 741 and the fourth elastic member 742 are respectively disposed at two opposite sides of the sixth adjustment seat 75, the fourth elastic member 742 is disposed in the second mounting groove 731, two ends of the fourth elastic member 742 are respectively abutted against a groove wall of the second mounting groove 731 and an outer wall of the sixth adjustment seat 75, the fourth driving knob 741 penetrates through a sidewall of the fifth adjustment seat 73 and is connected to the sixth adjustment seat 75, and the fourth driving knob 741 is in threaded connection with the fifth adjustment seat 73. By rotating the fourth driving knob 741, the fourth driving knob 741 can move relative to the fifth adjustment seat 73 and drive the sixth adjustment seat 75 to move relative to the fifth adjustment seat 73, and at the same time, the sixth adjustment seat 75 can be kept stable relative to the fifth adjustment seat 73 by the elastic force exerted on the sixth adjustment seat 75 by the fourth elastic member 742. In some alternative embodiments, the fourth elastic member 742 is a spring. Of course, those skilled in the art can select the structure of the fourth elastic member 742 as needed, and the structure is not limited herein. Further, a second positioning groove is formed in a side wall of the second mounting groove 731, and one end of the fourth elastic member 742 is located in the second positioning groove, so that the fourth elastic member 742 can be stably held between a groove wall of the second mounting groove 731 and an outer wall of the sixth adjustment seat 75.

In particular, as shown in fig. 10, the first adjusting device 7 further includes a third guiding assembly 76, the third guiding assembly 76 is disposed on the fourth adjusting seat 71, and the third guiding assembly 76 penetrates through the fifth adjusting seat 73 to guide the fifth adjusting seat 73, so that the fifth adjusting seat 73 can stably move relative to the fourth adjusting seat 71. In some alternative embodiments, the third guiding element 76 is a third guiding shaft, which extends through the fifth adjusting seat 73 and is connected to the fourth adjusting seat 71 at two ends. Optionally, the third guide assembly 76 includes two parallel spaced third guide shafts.

In particular, as shown in fig. 10, the first adjusting device 7 further includes a fourth guiding assembly 77, the fourth guiding assembly 77 is disposed on the fifth adjusting seat 73, and the fourth guiding assembly 77 penetrates through the sixth adjusting seat 75 to guide the sixth adjusting seat 75. In some alternative embodiments, the fourth guiding component 77 is a fourth guiding shaft, which penetrates through the sixth adjusting seat 75 and is connected to the fifth adjusting seat 73 at two ends. Optionally, the fourth guide assembly 77 includes two parallel and spaced fourth guide shafts.

When adjusting the position of the optical fiber interface 1, the laser processing head in this embodiment is inevitably subjected to a lateral pulling force, and the third guide assembly 76 and the fourth guide assembly 77 are provided to make the laser processing head in this embodiment move more smoothly. In order to further improve the stability of the laser processing head, a first sealing groove is formed in one side, facing the optical fiber interface 1, of the sixth adjusting seat 75, and a first sealing ring is arranged in the first sealing groove. The first seal ring has a buffering function, so that the laser processing head in the embodiment can move more stably.

As shown in fig. 2, the collimating device 3 includes a collimating base 31 and a collimating copper mirror 32, a first channel 311 and a second channel 312 which are communicated with each other and form an included angle are formed in the collimating base 31, the collimating copper mirror 32 is disposed at the junction of the first channel 311 and the second channel 312, one end of the collimating base 31 where the first channel 311 is disposed is connected to the first protection device 2, one end of the collimating base 31 where the second channel 312 is disposed is connected to the focusing device 4, and the laser beam can be incident from the first channel 311 and exit from the second channel 312 after being collimated and reflected by the collimating copper mirror 32.

In order to prolong the service life of the collimating copper mirror 32, as shown in fig. 2, the laser processing head in this embodiment further includes a first cooling device 8, the first cooling device 8 is disposed in the collimating device 3, and the collimating copper mirror 32 is cooled by the first cooling device 8, so that the collimating copper mirror 32 can be in a stable working state, and is suitable for high-power occasions.

Further, a first mounting hole is formed in the side wall of the collimation base 31, the first cooling device 8 comprises a first mounting base 81 detachably mounted in the first mounting hole and a first cooling channel 82 arranged in the collimation copper mirror 32, a first water inlet and a first water outlet are formed in the first mounting base 81, two ends of the first cooling channel 82 are respectively communicated with the first water inlet and the first water outlet, and the cooling effect is improved. In detail, the first mounting hole is opened at a side of the collimating holder 31 corresponding to the second channel 312, so as to facilitate the installation of the first cooling device 8 and the mounting of the collimating copper mirror 32.

In order to facilitate the arrangement of the first protection device 2, a first drawer groove is formed in a side portion of the collimation seat 31 close to one side of the first adjusting device 7, and the first protection device 2 is inserted into the first drawer groove. Specifically, first protection device 2 includes first protective glass seat 21 and first protective glass 22, and first protective glass seat 21 is inserted and is established in first drawer inslot, and first protective glass 22 sets up in first protective glass seat 21, when needing to change first protective glass 22, take out first protective glass seat 21 from first drawer inslot can.

As shown in fig. 2 and 11 to 13, the focusing device 4 includes a focusing base 41 and a focusing copper mirror 42, a third channel 411 and a fourth channel 412 which are communicated with each other and arranged at an included angle are formed in the focusing base 41, the focusing copper mirror 42 is arranged at the junction of the third channel 411 and the fourth channel 412, and a laser beam enters from the third channel 411, is focused and reflected by the focusing copper mirror 42, and then exits from the fourth channel 412.

In order to increase the service life of the focusing copper mirror 42, as shown in fig. 2, the laser processing head in this embodiment further includes a second cooling device 9, the second cooling device 9 is disposed in the focusing device 4, and the focusing copper mirror 42 is cooled by the second cooling device 9, so that the focusing copper mirror 42 can be in a stable operating state, and is suitable for high power applications.

Further, a second mounting hole is formed in the side wall of the focusing base 41, the second cooling device 9 comprises a second mounting base 91 and a second cooling channel 92, the second mounting base 91 is detachably mounted in the second mounting hole, the second cooling channel 92 is arranged in the focusing copper mirror 42, a second water inlet and a second water outlet are formed in the second mounting base 91, two ends of the second cooling channel 92 are respectively communicated with the second water inlet and the second water outlet, and the cooling effect is improved. In detail, the second mounting hole is opened at a side of the focus seat 41 corresponding to the third channel 411, so as to facilitate the arrangement of the second cooling device 9 and the mounting of the focusing copper mirror 42.

In order to facilitate the connection of the collimating means 3 and the focusing means 4, the laser machining head in this embodiment further comprises a first adapter means 10, as shown in fig. 2 and 11, the first adapter means 10 comprising a first adapter 101 and a first clasp 102. One end of the first adapter 101 is connected to the focusing device 4, a laser beam passage in the first adapter 101 is a stepped hole, one side of the collimating device 3 is convexly disposed in the stepped hole, and one end of the collimating device facing the focusing device 4 is abutted to a stepped surface in the stepped hole in the first adapter 101. First breach 1011 is seted up towards one side of collimating device 3 to first adapter 101, and first enclasping 102 can dismantle and connect in first breach 1011 in order to fix or loosen collimating device 3. It will be appreciated that releasing the first clasp 102 and rotating the collimating means 3 will change the position of the collimating means 3 relative to the focusing means 4, allowing the laser machining head in this embodiment to assume different configurations. In detail, the collimating seat 31 is provided with a ring 313 protruding towards one end of the first adaptor seat 101, the ring 313 is inserted into the stepped hole, the first clasping ring 102 is clamped on the ring 313 and connected to the first adaptor seat 101, so that the focusing device 4 and the collimating device 3 can be connected, and the collimating seat 31 can be rotated after the first clasping ring 102 is loosened.

In order to improve the sealing performance of the joint of the collimating device 3 and the focusing device 4, a second sealing groove is formed in the outer wall of the ring 313, a second sealing ring is arranged in the second sealing groove, and the outer wall of the ring 313 is in sealing connection with the inner wall of the stepped hole.

In order to further improve the sealing performance of the joint of the collimating device 3 and the focusing device 4, sealing rings are convexly arranged on one side of the collimating seat 31 facing the focusing seat 41 and the collimating seat 31 on the periphery of the ring 313, a third sealing groove is formed in one side of the focusing seat 41 facing the collimating mirror seat, and the sealing rings are clamped in the third sealing groove.

As shown in fig. 2 and 11, the laser processing head in this embodiment further includes a third protection device 11, the third protection device 11 is disposed between the focusing device 4 and the collimating device 3, and the collimating copper mirror 32 and the focusing copper mirror 42 can be separated by the third protection device 11, so that the dustproof effect of the laser processing head in this embodiment is further improved, cross contamination between the collimating copper mirror 32 and the focusing copper mirror 42 is avoided, and the service lives of the collimating copper mirror 32 and the focusing copper mirror 42 are prolonged. In detail, the third protection device 11 includes a third protection lens base 111 and a third protection lens 112 disposed in the third protection lens base 111, a third drawer slot is disposed on a side portion of one end of the focusing lens base close to the collimating device 3, and the third protection lens base 111 can slide into or be drawn out from the third drawer slot. In detail, the third protection means 11 are arranged between the first coupling means 10 and the focusing means 4.

The second protection device 5 includes a connection seat 51, a second protective lens seat 52 and a second protective lens 53 disposed in the second protective lens seat 52, the connection seat 51 is connected to the focusing device 4, a second drawer groove is disposed on one side of the connection seat 51, and the second protective lens seat 52 can slide into or be drawn out from the second drawer groove.

In order to facilitate the connection of the second protection device 5 and the nozzle adjustment device 12, as shown in fig. 14 to 16, the laser processing head in this embodiment further comprises a second adapter device 13, the second adapter device 13 comprising a second adapter 131 and a second clasp 132. The second adapter 131 is connected to the second protection device 5, a laser beam channel in the second adapter 131 is a stepped hole, and one end of the nozzle adjusting device 12 is protruded on a stepped surface in the stepped hole of the second adapter 131. A second notch 1311 is formed in one side of the second adaptor 131 facing the nozzle adjustment device 12, and the first clasping ring 102 is detachably connected in the second notch 1311 to fix or release the nozzle adjustment device 12.

Further, in order to prolong the service life of the second protective mirror 53 and enable the air flow to be uniformly blown to the processing surface, an air inner ring 133 is arranged in the second adapter 131, an air flow ring 134 is formed between the air inner ring 133 and the second adapter 131, a plurality of air holes 1331 inclined towards the second protective mirror 53 are formed in the air inner ring 133, and the plurality of air holes 1331 are uniformly distributed along the circumferential direction of the air inner ring 133 and are communicated with the air inner ring 133. The air flow ring 134 is communicated with an external air source, the air flow blows to the second protective mirror 53 through the air hole 1331, after homogenization, the air flow can uniformly and stably flow out through reflection of the second protective mirror 53, molten metal on the processing surface is quickly blown away through uniform and stable high-speed air flow, the laser processing quality can be improved, meanwhile, the second protective mirror 53 can be cooled and dedusted, and the service life of the second protective mirror 53 is prolonged.

In order to make the light spot focused by the mirror focusing device 4 to be located on the central axis of the outlet of the nozzle device 6, as shown in fig. 17 to 19, one end of the nozzle adjusting device 12 is connected to the second protecting device 5, and the other end is connected to the nozzle device 6, and the nozzle adjusting device 12 can drive the nozzle to move along the first direction, the second direction perpendicular to the first direction, and the central axis direction of the nozzle device 6. It can be understood that, by driving the nozzle device 6 to move in the first direction and the second direction through the nozzle adjusting device 12, the deviation between the outlet central axis of the nozzle device 6 and the central axis of the light spot focused by the mirror focusing device 4 can be reduced, and the processing quality can be improved. Meanwhile, the nozzle device 6 can move along the direction of the central axis of the outgoing laser beam, the position of the nozzle device 6 relative to the light spot is adjusted, welding slag is prevented from splashing and entering the nozzle device 6, and the size of the light spot can be adjusted.

As shown in fig. 19, the nozzle adjusting device 12 includes an adjusting sleeve 121, a first adjusting seat 122, a second adjusting seat 123, a third adjusting seat 124, a first driving assembly 125, a second driving assembly 126 and a locking assembly 127, wherein one end of the adjusting sleeve 121 is inserted into the laser beam channel of the second protecting device 5, and the other end is connected to the nozzle device 6. The first adjusting seat 122 is sleeved on the adjusting sleeve 121, and one end of the first adjusting seat 122 is connected to the second protection device 5. The second adjusting seat 123 is sleeved on the adjusting sleeve 121 and is located on one side of the first adjusting seat 122 close to the nozzle device 6. The third adjusting seat 124 is sleeved on the first adjusting seat 122 and the second adjusting seat 123. The first driving assembly 125 is connected to the third adjusting seat 124 and can drive the third adjusting seat 124 to move along the first direction relative to the first adjusting seat 122. The second driving assembly 126 is connected to the third adjusting base 124 and can drive the second adjusting base 123 to move relative to the third adjusting base 124 along a second direction perpendicular to the first direction. A locking assembly 127 is attached to the second adjustment block 123 for locking or unlocking the adjustment sleeve 121. It can be understood that, when the first driving assembly 125 drives the third adjusting seat 124 to move along the second direction, the second adjusting seat 123 can be driven to move, the second adjusting seat 123 can drive the locking assembly 127 and the adjusting sleeve 121 to move, when the second driving assembly 126 drives the second adjusting seat 123 to move along the first direction, the locking assembly 127 and the adjusting sleeve 121 can be driven to move, and when the locking assembly 127 is released, the adjusting sleeve 121 can move along the central axis direction thereof, thereby realizing the movement of the nozzle device 6.

Further, the first driving assembly 125 includes a first driving knob 1251 and a first elastic member 1252, the first driving knob 1251 and the first elastic member 1252 are respectively located at two opposite sides of the first adjusting seat 122, two ends of the first elastic member 1252 respectively abut against an outer wall of the first adjusting seat 122 and an inner wall of the third adjusting seat 124, the first driving knob 1251 penetrates through a sidewall of the third adjusting seat 124 and is connected to the first adjusting seat 122, and the first driving knob 1251 is in threaded connection with the third adjusting seat 124. Since the first adjusting seat 122 is connected to the second protecting device 5, the third adjusting seat 124 can move relative to the first adjusting seat 122 when the first driving knob 1251 is rotated. Meanwhile, the third adjustment seat 124 can be kept stable with respect to the first adjustment seat 122 by the elastic force applied to the third adjustment seat 124 by the first elastic member 1252. In some alternative embodiments, the third elastic member 722 is a spring.

Preferably, the inner wall of the third adjusting seat 124 is provided with a first clamping groove corresponding to the first elastic member 1252, one end of the first elastic member 1252 is located in the first clamping groove, and the first clamping groove can facilitate installation of the first elastic member and guide the first elastic member 1252 to enable the first adjusting seat 122 to stably move.

Furthermore, the second driving assembly 126 includes a second driving knob 1261 and a second elastic member 1262, two ends of the second driving knob 1261 and the second elastic member 1262 are respectively located at two opposite sides of the second adjusting seat 123, a fourth driving knob 741 penetrates a side wall of the third adjusting seat 124, the fourth driving knob 741 is in threaded connection with the third adjusting seat 124, and two ends of the second elastic member 1262 respectively abut against an inner wall of the third adjusting seat 124 and an outer wall of the second adjusting seat 123. When the second driving knob 1261 is turned, the second adjustment seat 123 can move relative to the third adjustment seat 124. Meanwhile, the second adjusting seat 123 can be kept stable relative to the third adjusting seat 124 by the elastic force applied to the second adjusting seat 123 by the second elastic member 1262. In some alternative embodiments, the second resilient member 1262 is a spring.

Preferably, a second locking groove is formed on an inner wall of the third adjusting seat 124 corresponding to the second elastic member 1262, and one end of the second elastic member is located in the second locking groove.

In particular, the nozzle adjusting device 12 further includes a first guiding assembly 128, wherein the first guiding assembly 128 is disposed on the third adjusting seat 124 and penetrates the first adjusting seat 122 to guide the third adjusting seat 124, so that the third adjusting seat 124 can be stably moved. The first guiding element 128 is a first guiding shaft, which penetrates the first adjusting seat 122 and is connected to the third adjusting seat 124 at two ends thereof. Optionally, the first guide assembly 128 includes two first guide shafts disposed in parallel spaced apart relation.

Further, the nozzle adjusting device 12 further includes a second guiding assembly 129, the second guiding assembly 129 is disposed on the third adjusting seat 124 and penetrates through the second adjusting seat 123 to guide the second adjusting seat 123, so that the second adjusting seat 123 can be stably moved. The second guiding element 129 is a second guiding shaft, which penetrates the second adjusting seat 123 and has two ends respectively connected to the third adjusting seat 124. Optionally, the second guide assembly 129 includes two second guide shafts disposed in parallel spaced apart relation.

In some alternative embodiments, locking assembly 127 includes a locking nut 1271 and a locking ring 1272, wherein locking ring 1272 is disposed on adjustment sleeve 121 and between the outer wall of adjustment sleeve 121 and the inner wall of second adjustment seat 123, locking nut 1271 is disposed on adjustment sleeve 121, and locking nut 1271 is threadably coupled to second adjustment seat 123.

In some alternative embodiments, the second adjusting seat 123 is provided with a connecting ring extending toward the nozzle device 6 on a side facing the nozzle device 6, the locking ring 1272 is sleeved on the adjusting sleeve 121 and located in the connecting ring, locking grooves are formed along an end surface of the locking ring 1272 at regular intervals around a central axial direction thereof, and the locking nut 1271 is sleeved on the adjusting sleeve 121 and is threadedly connected to the connecting ring. The lock nut 1271 is loosened to move the adjustment sleeve 121 in the direction of the central axis thereof, and the lock nut 1271 is tightened to fix the adjustment sleeve 121 and the second adjustment seat 123.

As shown in fig. 20, the nozzle device 6 includes an air knife assembly 61, a powder distribution nozzle adjusting assembly and a powder distribution nozzle 63, the air knife assembly 61 is connected to the second protection device 5, the powder distribution nozzle adjusting assembly is disposed at one side of the air knife assembly 61, the powder distribution nozzle 63 is connected to an execution end of the powder distribution nozzle adjusting assembly, and the powder distribution nozzle adjusting assembly is used for adjusting the position of the powder distribution nozzle 63. Specifically, the air knife assembly 61 is connected to the adjusting sleeve 121, the position of the air knife assembly 61 can be adjusted by the adjusting sleeve 121, and the powder dividing nozzle adjusting assembly is connected to the nozzle adjusting device 12. The air knife assembly 61 can prevent welding slag at the workpiece processing position from splashing and entering the interior of the laser processing head in the embodiment, so that the service life of the laser processing head in the embodiment is prolonged; the powder distributing nozzle adjusting assembly can adjust the position of the powder distributing nozzle 63, so that the powder distributing nozzle 63 can accurately spray the uniformly dispersed cladding material at the corresponding position of the spraying device, and the cladding quality is improved.

As shown in fig. 3 to 6, the powder distributing nozzle adjusting assembly includes a Z-axis driving member 621, an X-axis driving member 623, and an R-axis driving member 625, wherein the Z-axis driving member 621 is connected to the nozzle adjusting device 12. The X-axis driving element 623 is connected to an execution end of the Z-axis driving element 621 through the first connection plate 622, and the Z-axis driving element 621 can drive the X-axis driving element 623 to move along the Z-axis direction and can be fixed at any position; the R-axis driving member 625 is connected to an execution end of the X-axis driving member 623, the X-axis driving member 623 can drive the R-axis driving member 625 to move in the X-axis direction and can be fixed at an arbitrary position, the powder distribution nozzle 63 is connected to the execution end of the R-axis driving member 625, and the R-axis driving member 625 can drive the powder distribution nozzle 63 to rotate around the Y-axis and can be fixed at an arbitrary position.

Through the setting of Z axle driving piece 621, make and divide powder nozzle 63 to realize the adjustment in vertical direction position and can fix in optional position, setting through X axle driving piece 623, make and divide powder nozzle 63 to realize the adjustment in the horizontal direction position and can fix in optional position, be convenient for adjust and divide the position of spouting the relative laser beam of nozzle, R axle driving piece 625 sets up the inclination that can adjust branch powder nozzle 63 and can fix in optional position, thereby be convenient for adjust the inclination of the relative laser beam of outgoing direction of cladding material of dividing powder nozzle 63, after the position and the angle of powder nozzle 63 are divided in the adjustment simultaneously, divide powder nozzle 63 can be stable fixed, thereby can improve the cladding effect, improve processingquality.

As shown in fig. 6, the Z-axis driving member 621 includes a first rack 6211, a first slider 6212, and a first gear shaft 6213, the first rack 6211 being disposed along the Z-axis direction, the first rack 6211 being fixed to the nozzle adjusting device 1212; the first sliding block 6212 is slidably connected to the first rack 6211; the first gear shaft 6213 is rotatably connected to the first slider 6212, and the first gear shaft 6213 is meshed with the first rack 6211, so that the position of the powder distribution nozzle 63 in the Z-axis direction can be accurately adjusted through the matching of the first rack 6211 and the first gear shaft 6213, and the movement of the powder distribution nozzle 63 is more stable.

In order to stably connect the first rack 6211 and the first slider 6212, as shown in fig. 6 and 7, the first rack 6211 includes a first base 62111 and a first boss 62112 disposed at one side of the first base 62111, the first boss 62112 is dovetail-shaped, and the first boss 62112 is convexly provided with teeth; the first slider 6212 is provided with a first sliding slot 62121 slidably engaged with the first protrusion 62112.

Further, the X-axis driving member 623 includes a second rack, a second slider, and a second gear shaft, and the second rack is connected to the first connection plate 622; the second sliding block is connected to the second rack in a sliding manner; the second gear shaft is rotatably connected to the second sliding block and meshed with the second rack, and the position of the powder distribution nozzle 63 in the X-axis direction can be accurately adjusted through the matching of the second rack and the second gear shaft, so that the powder distribution nozzle 63 is more stable when moving.

In order to stably connect the second rack with the second sliding block, the second rack comprises a second base and a second boss arranged on one side of the second base, the second boss is in a dovetail shape, and teeth are convexly arranged on the second boss; the second slide block is provided with a first slide groove 62121 in sliding fit with the second boss.

As shown in fig. 6, the R-axis driver 625 includes a base 6251, a turntable 6252, and a rotation driving module 6253, the base 6251 is connected to the executing end of the X-axis driver 623, the turntable 6252 is rotatably connected to the base 6251, the rotation driving module 6253 is connected to the base 6251, and the rotation driving module 6253 can drive the turntable 6252 to rotate around the Y-axis. Specifically, the base plate 6251 is connected to the second slider through the second connecting plate 624, and the rotary driving module 6253 can drive the rotary table 6252 to rotate, so as to drive the powder distributing nozzle 63 to rotate around the Y axis.

In some optional implementations, a pressing portion protrudes from one side of the turntable 6252, the rotary driving module 6253 includes a mounting seat 62531 and a micrometer 62533, the mounting seat 62531 is connected to the base plate 6251, two lugs 62532 are spaced from one side of the mounting seat 62531, the pressing portion is located between the two lugs 62532, a micrometer screw of the micrometer 62533 is connected to one of the two lugs 62532, a measuring anvil of the micrometer 62533 is connected to the other, and the pressing portion is located between the micrometer screw and the measuring anvil, the micrometer screw is rotated, and the micrometer screw drives the turntable 6252 to rotate through the pressing portion, so as to drive the powder dividing nozzle 63 to rotate.

In order to expand the applicable range of the laser processing head in the present embodiment, the powder distribution nozzle 63 is a single-line powder feeding nozzle or a wide-type powder feeding nozzle. The structure of the wide powder outlet nozzle can be selected by those skilled in the art according to the needs, and will not be described in detail herein.

Further, as shown in fig. 5, 6, 8 and 9, when the powder distributing nozzle 63 is a single-line powder feeding nozzle, the powder distributing nozzle 63 includes an inner powder feeding pipe 631 and an outer sleeve 632, the inner powder feeding pipe 631 is used for conveying cladding materials, an input end of the inner powder feeding pipe 631 is communicated with the powder feeder, the outer sleeve 632 is sleeved on the inner powder feeding pipe 631, the outer sleeve 632 is connected to an execution end of the powder distributing nozzle adjusting assembly, two ends of the outer sleeve 632 are hermetically connected with the inner powder feeding pipe 631, a cooling cavity 633 is formed between an inner wall of the outer sleeve 632 and an outer wall of the inner powder feeding pipe 631, specifically, the cooling cavity 633 is communicated with a liquid inlet and a liquid outlet, and the cooling medium is introduced into the cooling cavity 633 to cool the powder distributing nozzle 63, so as to take away laser radiation heat, thereby improving the powder distributing effect of the powder distributing nozzle 63.

The air knife assembly 61 can blow out a transverse air flow to prevent welding slag on the machining surface from splashing and entering the inside of the laser machining head in this embodiment, as shown in fig. 3, 4 and 20, the air knife assembly 61 includes an air knife holder 611, a blowing seat 612 and a lower baffle 613, the air knife holder 611 is connected to the nozzle adjusting device 12, the blowing seat 612 is connected to a side of the air knife holder 611 away from the nozzle adjusting device 12, the blowing seat 612 is U-shaped, a cavity is formed in the blowing seat 612, a slit 6121 communicated with the cavity is formed in the blowing seat 612, an outlet of the slit 6121 faces a direction of an opening of the lower U-shape and is perpendicular to a direction of the laser beam, the lower baffle 613 is connected to a side of the blowing seat 612 away from the seat, a third cooling channel is formed in the lower baffle 613, and a third water inlet and a third water outlet which are respectively communicated with the third cooling channel are formed in the lower baffle 613. The lateral blowing assembly 62 includes an angle adjusting member 621 and a blowing pipe 622, and the angle adjusting member 621 is connected to the nozzle adjusting means 12 at one end and connected to the blowing pipe 622 at the other end. The angle adjusting part 621 can adjust the inclination angle of the blowing pipe 622, which is not described herein.

In this embodiment, the position of the optical fiber interface 1 is adjusted by the first adjusting device 7, so that the position of the laser incident point can be adjusted, the deviation between the laser incident point and the central optical axis of the collimating device 3 is reduced, the shape of the light spot output from the nozzle device 6 is further adjusted, the quality of the laser beam is improved, and the processing quality is improved; the dust-proof effect of the laser processing head in the present embodiment can be improved by the arrangement of the first protection device 2, the second protection device 5, and the third protection device 11; the connection of the collimating means 3 and the focusing means 4 can be facilitated by the provision of the first adjusting means 7; the collimating copper mirror 32 and the focusing copper mirror 42 can be cooled by the first cooling device 8 and the second cooling device 9 respectively, the first cooling channel 82 and the second cooling channel 92 are arranged in the collimating copper mirror 32 and the focusing copper mirror 42 respectively, the cooling effect of the collimating copper mirror 32 and the focusing copper mirror 42 is good, and the collimating copper mirror 32 and the focusing copper mirror 42 can be used in high-power processing occasions; through the arrangement of the nozzle adjusting device 12, the position of the nozzle device 6 can be adjusted, the size of a light spot can be adjusted, different processing requirements can be met, and the processing quality and the service life of laser processing in the embodiment can be improved; in addition, the nozzle device 6 in this embodiment may be provided with different forms to complete processing with different functions, so as to expand the application range of the laser processing head in this embodiment, and the powder distribution nozzle adjusting assembly 62 may stably adjust the position and angle of the powder distribution nozzle 62, so as to improve the quality of cladding processing.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. A divide powder nozzle adjustment assembly for adjusting the position of a divide powder nozzle (63), comprising:

a Z-axis driver (621);

the X-axis driving piece (623) is connected to the execution end of the Z-axis driving piece (621) through a first connecting plate (622), and the Z-axis driving piece (621) can drive the X-axis driving piece (623) to move along the Z-axis direction and can be fixed at any position; and

r axle driving piece (625), R axle driving piece (625) connect in the execution end of X axle driving piece (623), X axle driving piece (623) can drive R axle driving piece (625) remove and can fix in the optional position along X axle direction, divide powder nozzle (63) connect in the execution end of R axle driving piece (625), R axle driving piece (625) can drive divide powder nozzle (63) to rotate around the Y axle and can fix in the optional position.

2. The powder dispensing nozzle adjustment assembly of claim 1, wherein the Z-axis drive (621) comprises:

a first rack (6211) provided along the Z-axis direction;

a first slider (6212) slidably connected to the first rack (6211); and

a first gear shaft (6213) rotatably connected to the first slider (6212), wherein the first gear shaft (6213) is engaged with the first rack (6211).

3. The powder-distributing nozzle regulating assembly according to claim 2, wherein the first rack (6211) comprises a first base (62111) and a first boss (62112) provided on one side of the first base (62111), the first boss (62112) is dovetail-shaped, and teeth are convexly provided on the first boss (62112);

the first sliding block (6212) is provided with a first sliding groove (62121) which is in sliding fit with the first boss (62112).

4. The powder distributing nozzle adjusting assembly according to claim 1, wherein the X-axis driving member (623) comprises:

a second rack connected to the first connecting plate (622);

the second sliding block is connected to the second rack in a sliding mode; and

and the second gear shaft is rotationally connected to the second sliding block and is meshed with the second rack.

5. The powder distributing nozzle adjusting assembly according to claim 4, wherein the second rack comprises a second base and a second boss arranged on one side of the second base, the second boss is dovetail-shaped, and teeth are convexly arranged on the second boss;

and a first sliding groove (62121) in sliding fit with the second boss is formed in the second sliding block.

6. The powder distributing nozzle adjusting assembly according to claim 1, wherein the R-axis driving member (625) comprises:

a base plate (6251) connected to an execution end of the X-axis driving member (623);

a turntable (6252) rotatably connected to the base plate (6251); and

a rotational drive module (6253) coupled to the base plate (6251), the rotational drive module (6253) configured to drive the turntable (6252) to rotate about the Y-axis.

7. The powder-dividing nozzle regulating assembly according to claim 6, wherein one side of the rotary table (6252) is convexly provided with a pressing part, and the rotary driving module (6253) comprises:

the mounting seat (62531) is connected to the base plate (6251), two lugs (62532) are arranged on one side of the mounting seat (62531) at intervals, and the pressing part is located between the two lugs (62532); and

the micrometer (62533) comprises a micrometer screw (62533) connected to one of the two lugs (62532), an anvil of the micrometer (62533) connected to the other, and the pressing part is located between the micrometer screw and the anvil.

8. A laser processing head, comprising an optical fiber interface (1), a first protection device (2), a collimating device (3), a focusing device (4), a second protection device (5) and a nozzle device (6) which are sequentially arranged from one end to the other end, wherein the nozzle device (6) comprises an air knife assembly (61), the powder distribution nozzle adjusting assembly of any one of claims 1 to 7 and the powder distribution nozzle (63), the air knife assembly (61) is connected to the second protection device (5), the powder distribution nozzle adjusting assembly is arranged on one side of the air knife assembly (61), and the powder distribution nozzle (63) is connected to an execution end of the powder distribution nozzle adjusting assembly.

9. Laser machining head according to claim 8, characterized in that the powder distribution nozzle (63) is a single-line powder delivery nozzle or a wide-type powder delivery nozzle.

10. Laser machining head according to claim 9, characterized in that when the powder distribution nozzle (63) is a single-line powder delivery nozzle, the powder distribution nozzle (63) comprises:

an inner powder feeding pipe (631) for feeding cladding material;

overcoat (632), the cover is established send powder pipe (631) in, overcoat (632) connect in divide powder nozzle adjusting part's execution end, the both ends of overcoat (632) with send powder pipe (631) sealing connection in, just the inner wall of overcoat (632) with be formed with cooling chamber (633) between the outer wall of sending powder pipe (631) in.

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