CN210817996U

CN210817996U - Laser cutting device for processing connecting rod cracking groove

Info

Publication number: CN210817996U
Application number: CN201921457966.2U
Authority: CN
Inventors: 王冠; 汪春辉; 苏培林; 张雅文; 刘赞丰; 杨志刚
Original assignee: Guangzhou Dongzhen Laser Technology Co ltd
Current assignee: Guangzhou Dongzhen Laser Technology Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-23
Anticipated expiration: 2029-09-02

Abstract

The utility model relates to the technical field of laser cutting, and discloses a laser cutting device for processing a connecting rod cracking groove, which comprises a motor and a laser cutting head, wherein the laser cutting head is connected with the rotating end of the motor; the motor is equipped with incident passageway, and the laser cutting head is equipped with emergent passageway, incident passageway and emergent passageway light path intercommunication, and the laser cutting head still is equipped with cutting nozzle, is equipped with the light-emitting reflection lens in the emergent passageway, and the light-emitting reflection lens is used for will launching the laser in the emergent passageway from incident passageway and is gone out from cutting nozzle reflection. The laser cutting device utilizes the rotation of the motor to complete the angle adjustment of the laser cutting head, and has high processing efficiency and good operability; secondly, because the central line of the cutting nozzle and the rotating central line of the motor form an included angle of 70 degrees to 90 degrees, the laser cutting device can realize an incident angle of 0 degree or close to 0 degree, further can reduce the reflectivity of the material to the laser to the greatest extent, and improve the processing precision and the forming quality of the cracking groove.

Description

Laser cutting device for processing connecting rod cracking groove

Technical Field

The utility model relates to a laser cutting technical field especially relates to a laser cutting device in processing connecting rod schizolysis groove.

Background

The cracking processing technology of the connecting rod of the engine is the latest technology of the international connecting rod production at present, and has the superiority which is not comparable with the traditional connecting rod processing method. Before the connecting rod is cracked, two symmetrical cracking grooves are formed on two side faces of a big-end hole of the connecting rod, so that stress concentration is generated during cracking of the connecting rod to realize positioning fracture, and therefore, the processing of the cracking grooves is a key core process of a connecting rod cracking processing technology. The laser processing of the automobile connecting rod cracking groove is the development trend of the current connecting rod cracking processing technology, and has the advantages of narrow cutting seam, high speed, no tool abrasion, small processing heat affected zone, few processing procedures, capability of greatly improving the cracking quality and the like, so that the research and development of the automation device for processing the connecting rod cracking groove by using the laser has very important practical significance.

At present, domestic and foreign companies and scientific research structures mostly adopt Nd: YAG solid laser researches and develops the specialized laser processing equipment of connecting rod schizolysis trough, wherein comparatively common has: connecting rod cracking groove laser processing equipment developed by a certain company in China adopts a single-output laser cutting head, and a special laser cutting head swinging structure is provided to complete the angular rotation of the laser cutting head so as to complete the processing of two cracking grooves with large-head holes; the laser grooving equipment designed by a certain foreign company distributes a laser beam to two focusing devices through a spectroscope, the two focusing devices are distributed in a crossed manner, and the cracking grooves on two sides can be processed simultaneously or respectively.

Although the laser processing equipment can realize the automatic processing of the connecting rod cracking groove, the laser processing equipment still has the following defects:

1. because the size of the laser cutting head is huge, the cracking groove is processed at a certain incidence angle, so that part of laser energy is reflected by materials, the energy is not concentrated, the surface of the processed cracking groove is rough, and the energy consumption is higher;

2. the mode that utilizes swing structure adjustment laser cutting head to realize two schizolysis groove processing is inefficient to the precision is not high, and adopts the spectroscope to realize two schizolysis groove processing is efficient, but practicality and maneuverability are not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a laser cutting device in processing connecting rod schizolysis groove that the energy consumption is lower, the precision is higher, maneuverability is good, efficiency is better.

In order to achieve the above object, the present invention provides a laser cutting device for processing a connecting rod splitting slot, comprising a motor and a laser cutting head, wherein the motor comprises a rotating end and a non-rotating end opposite to the rotating end in direction, and the laser cutting head is connected with the rotating end and can rotate along with the rotating end;

the motor is equipped with and runs through rotatory end with the incident passageway of non-rotation end, the laser cutting head is equipped with the exit passageway, the incident passageway with exit passageway light path intercommunication can make laser along the rotatory central line of motor propagates, the laser cutting head still be equipped with the cutting nozzle of exit passageway light path intercommunication, just the central line of cutting nozzle with the rotatory central line of motor is 70 to 90 contained angles, be equipped with the light-emitting reflection lens in the exit passageway, the light-emitting reflection lens is used for following the incident passageway jets into laser in the exit passageway is followed the cutting nozzle reflection is gone out.

Preferably, the central line of the cutting nozzle forms an included angle of 90 degrees with the rotating central line of the motor.

Preferably, the center line of the cutting nozzle intersects with the rotation center line of the motor, and the light-emitting reflection lens is arranged at the intersection of the cutting nozzle and the motor.

Preferably, the laser cutting head comprises a cutting head body, the emergent channel is arranged in the cutting head body, an emergent channel inlet and an emergent channel outlet are formed in the surface of the cutting head body, the incident channel is communicated with the emergent channel light path through the emergent channel inlet, and the cutting nozzle is fixed outside the emergent channel outlet through a mounting frame and is communicated with the emergent channel light path through the emergent channel outlet.

Preferably, the laser cutting device further comprises a focusing structure, the focusing structure comprises a shell, and a collimating lens and a focusing lens which are arranged in the shell, and the collimating lens and the focusing lens are connected with the shell through a supporting component;

the casing is including relative first shell plate and the second shell plate that sets up, first shell plate pass through the ring flange with rotatory end is connected, the second shell plate with the cutting head body is equipped with the one end of exit channel import is connected, first shell plate is equipped with the first through-hole that supplies laser to pass, first through-hole with be located the incident passageway export of rotatory end is aligned, the second shell plate is equipped with the second through-hole that supplies laser to pass, the second through-hole with the exit channel import is aligned, the collimation lens with the focus lens is located first through-hole with between the second through-hole.

Preferably, the collimating lens and the focusing lens are sequentially arranged in a laser propagation direction from the incident channel to the exit channel.

As a preferred scheme, the supporting component comprises a supporting seat and a focusing frame, the supporting seat is fixedly connected with the shell and is provided with a guide rail parallel to the rotation center line of the motor, a sliding block is arranged on the guide rail, the focusing frame is connected with the sliding block, the focusing frame is provided with a collimating lens frame and a focusing lens frame, the collimating lens is arranged in the collimating lens frame, and the focusing lens is arranged in the focusing lens frame.

As the preferred scheme, still be equipped with the knob regulator on the supporting seat, the knob regulator be equipped with and be on a parallel with the ejector pin of guide rail, the focusing frame is equipped with and extends to the fender arm in ejector pin the place ahead.

According to a preferable scheme, a compressed air channel is arranged inside the cutting head body, an air inlet channel communicated with the compressed air channel is arranged on the second shell plate, an air inlet hole is formed in the surface of the second shell plate through the air inlet channel, an air outlet channel communicated with the compressed air channel is arranged on the mounting frame, and an air outlet hole communicated with the cutting nozzle is formed in the side face, facing the outlet of the emergent channel, of the mounting frame.

As a preferred scheme, the laser cutting device further comprises a connecting seat provided with a concave cavity, the surface of the connecting seat, which faces away from the concave cavity, is a mounting surface, the non-rotating end of the motor is connected with the mounting surface, a third through hole communicated with the light path of the concave cavity is arranged on the mounting surface, the third through hole is aligned with an entrance of an incident channel positioned at the non-rotating end, the connecting seat is further provided with a light inlet surface, a fourth through hole communicated with the light path of the concave cavity is arranged on the light inlet surface, a light inlet reflection lens is arranged in the concave cavity, and the light inlet reflection lens is used for reflecting laser which enters the concave cavity from the fourth through hole into the incident channel from the third through hole.

The embodiment of the utility model provides a laser cutting device in processing connecting rod schizolysis groove compares with prior art, and its beneficial effect lies in:

the embodiment of the utility model provides a laser cutting device comprises a motor and a laser cutting head, wherein the motor comprises a rotating end and a non-rotating end, and the laser cutting head is connected with the rotating end and can rotate along with the rotating end; the motor is equipped with the incident passageway that runs through rotatory end and non-rotation end, and the laser cutting head is equipped with the exit passageway, and incident passageway and exit passageway light path intercommunication can make laser propagate along the rotation central line of motor, and the laser cutting head still is equipped with the cutting nozzle who communicates with exit passageway light path, is equipped with the light-emitting reflection lens in the exit passageway, and the light-emitting reflection lens is used for reflecting away from the cutting nozzle with the laser that jets into in the exit passageway from incident passageway. Based on the structure, the laser cutting device utilizes the rotation of the motor to complete the angle adjustment of the laser cutting head, thereby realizing the processing of two symmetrical cracking grooves, and having high processing efficiency and good operability; secondly, because the central line of the cutting nozzle and the rotating central line of the motor form an included angle of 70 degrees to 90 degrees, the laser emitted from the cutting nozzle is vertical or nearly vertical to the inner wall of the big head hole of the connecting rod, namely, the laser cutting device can realize an incident angle of 0 degree or nearly 0 degree, thereby reducing the reflectivity of the material to the laser to the maximum extent, reducing the waste of energy and improving the processing precision and the forming quality of the cracking groove; in addition, the laser cutting head of the laser cutting device is small and flexible, is not influenced by the thickness of the connecting rod, and can go deep into the big end hole of the connecting rod.

Drawings

Fig. 1 is an overall schematic view of a laser cutting apparatus according to an embodiment of the present invention;

fig. 2 is a schematic view of a laser cutting apparatus according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a laser cutting head according to an embodiment of the present invention;

fig. 4 is a schematic view of a laser cutting head according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a focusing structure of an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a focusing assembly according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a connection seat according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a laser cutting apparatus according to an embodiment of the present invention at a third through hole;

fig. 9 is a schematic structural view of a first light entering reflection lens and a first frame according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a second light entering reflection lens and a second frame according to an embodiment of the present invention.

In the figure: 1. a motor; 101. a rotating end; 102. a non-rotating end; 103. an incident channel; 2. a laser cutting head; 201. an exit channel; 202. a cutting nozzle; 203. a light-emitting reflection lens; 204. a cutting head body; 2041. an exit channel inlet; 2042. an exit of the exit channel; 2043. a concave position; 2044. an installation port; 2045. a compressed air passage; 205. a mounting frame; 2051. an air outlet channel; 206. a cover plate; 207. a lens base; 208. a first airtight ring; 209. a second airtight ring; 210. a first protective lens; 211. a first seal ring; 212. a second seal ring; 213. a second protective lens; 214. a third seal ring; 3. a focusing structure; 301. a housing; 3011. a first shell plate; 3012. a second shell plate; 3013. a first through hole; 3014. a second through hole; 3015. a third shell plate; 3016. an air intake passage; 302. a collimating mirror; 303. a focusing mirror; 304. a collimating mirror frame; 305. a focusing lens frame; 306. a focusing frame; 3061. a catch arm; 307. a knob adjuster; 3071. a top rod; 308. a guide rail; 309. a protective cover; 310. a third protective lens; 311. a first ring cover; 312. a fourth seal ring; 4. a flange plate; 5. a connecting seat; 501. a concave cavity; 502. a third through hole; 503. a light inlet surface; 504. a fourth via hole; 505. four protective lenses; 506. a second ring cover; 507. an eighth seal ring; 6. a first light entrance mirror; 7. a second light entrance reflection lens; 8. a first frame; 801. a first base plate; 8011. a first bar-shaped hole; 802. a first frame; 9. a second frame; 901. a second base plate; 9011. a second bar-shaped hole; 902. a second frame; 10. a fifth seal ring; 11. a sixth seal ring; 12. and a seventh seal ring.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a laser cutting device for processing a connecting rod splitting slot, which mainly includes a motor 1 and a laser cutting head 2. The motor 1 comprises a rotating end 101 and a non-rotating end 102, the directions of the two ends are opposite, the laser cutting head 2 is connected with the rotating end 101 and can rotate along with the rotating end, in addition, in order to ensure that the laser cutting head 2 can smoothly process two symmetrical cracking grooves of a connecting rod, the rotating angle theta of the laser cutting head 2 is more than or equal to 180 degrees, and in the embodiment, in order to meet the processing of any angle, the rotating angle theta of the laser cutting head 2 is 360 degrees. The motor 1 is provided with an incident channel 103 penetrating through the rotating end 101 and the non-rotating end 102, the laser cutting head 2 is provided with an emergent channel 201, the incident channel 103 is in optical path communication with the emergent channel 201 and can enable laser to propagate along the rotating center line of the motor 1, and preferably, the center line of the incident channel 103, the center line of the emergent channel 201 and the rotating center line of the motor 1 are coincident; the laser cutting head 2 is further provided with a cutting nozzle 202 communicated with the light path of the emergent channel 201, the central line of the cutting nozzle 202 and the rotating central line of the motor 1 form an included angle of 70-90 degrees, a light-emitting reflection lens 203 is arranged in the emergent channel 201, and the light-emitting reflection lens 203 is used for reflecting laser emitted into the emergent channel 201 from the incident channel 103 out of the cutting nozzle 202.

Based on the structure, the laser cutting device utilizes the rotation of the motor 1 to complete the angle adjustment of the laser cutting head 2, thereby realizing the processing of two symmetrical cracking grooves, and having high processing efficiency and good operability; secondly, because the central line of the cutting nozzle 202 and the rotating central line of the motor 1 form an included angle of 70 degrees to 90 degrees, the laser emitted from the cutting nozzle 202 is vertical or nearly vertical to the inner wall of the big head hole of the connecting rod, namely, the incident angle of 0 degree or nearly 0 degree can be realized, so that the reflectivity of the material to the laser can be reduced to the greatest extent, the waste of energy is reduced, and the processing precision and the forming quality of the cracking groove are improved; in addition, the laser cutting head 2 of the laser cutting device is small and flexible, is not influenced by the thickness of the connecting rod, and can go deep into the big end hole of the connecting rod.

It can be understood that, in the present embodiment, the central line of the cutting nozzle 202 forms an included angle of 90 ° with the rotation central line of the motor 1, that is, the laser cutting device can realize an incident angle of 0 °, at this time, the reflectivity of the material to the laser is the lowest, the waste of energy is the least, and the processing precision and the forming quality of the cracking groove are the highest.

Specifically, as shown in fig. 3 to 4, the laser cutting head 2 includes a cutting head body 204, the exit channel 201 is disposed inside the cutting head body 204, an exit channel inlet 2041 and an exit channel outlet 2042 communicated with the exit channel 201 are disposed on a surface of the cutting head body 204, the direction of the exit channel inlet 2041 is perpendicular to the direction of the exit channel outlet 2042, the incident channel 103 is in optical path communication with the exit channel 201 through the exit channel inlet 2041, and the cutting tip 202 is fixed outside the exit channel outlet 2042 through the mounting bracket 205 and is in optical path communication with the exit channel 201 through the exit channel outlet 2042. In order to improve the overall aesthetic property of the laser cutting head 2, the surface of the cutting head body 204 provided with the exit channel outlet 2042 is provided with a concave portion 2043, the exit channel outlet 2042 is arranged on the bottom wall of the concave portion 2043, and the mounting frame 205 is fixed in the concave portion 2043.

Further, as shown in fig. 3, the center line of the cutting nozzle 202 intersects with the rotation center line of the motor 1, the light-exiting mirror 203 is installed at the intersection of the two through the mirror base 207, and the mirror surface of the light-exiting mirror 203 forms an included angle of 45 ° with the center line of the cutting nozzle 202 and the rotation center line of the motor 1; the light-emitting reflection lens 203 is arranged on the front surface of the lens seat 207, and the back surface of the lens seat 207 is provided with four adjusting knobs which are respectively used for correspondingly adjusting the four directions of the light-emitting reflection lens 203; the surface of the cutting head body 204 facing away from the exit channel outlet 2042 is provided with a mounting opening 2044, and a detachable cover plate 206 is arranged outside the mounting opening 2044 so as to facilitate mounting and adjustment of the light exit mirror 203.

As shown in fig. 1, fig. 2, fig. 5 and fig. 6, the embodiment of the present invention provides a laser cutting device for processing a connecting rod splitting slot, further comprising a focusing structure 3, wherein the focusing structure 3 comprises a housing 301 and a collimating lens 302 and a focusing lens 303 both disposed inside the housing 301, and the collimating lens 302 and the focusing lens 303 are connected to the housing 301 through a supporting component. Specifically, the housing 301 includes a first casing 3011 and a second casing 3012 disposed opposite to each other, and a third casing 3015 connected therebetween, the first casing 3011 is connected to the output end of the motor 1 through the flange 4, and the second casing 3012 is connected to the end of the cutting head body 204 having the exit passage inlet 2041; the first shell 3011 is provided with a first through hole 3013 for laser to pass through, the first through hole 3013 is aligned with the exit of the incident channel 103 at the rotation end 101, the second shell 3012 is provided with a second through hole 3014 for laser to pass through, and the second through hole 3014 is aligned with the exit channel entrance 2041; the collimating lens 302 and the focusing lens 303 are disposed between the first through hole 3013 and the second through hole 3014, and the collimating lens 302 and the focusing lens 303 are sequentially disposed in a laser propagation direction from the incident channel 103 to the exit channel 201.

Further, as shown in fig. 5 and 6, the supporting assembly includes a supporting base and a focusing frame 306, the supporting base is fixedly connected with the housing 301 and is provided with a guide rail 308 parallel to the rotation center line of the motor 1, a slider is arranged on the guide rail 308, the focusing frame 306 is connected with the slider, the focusing frame 306 is provided with an alignment lens frame 304 and a focusing lens frame 305, the alignment lens 302 is arranged in the alignment lens frame 304, and the focusing lens 303 is arranged in the focusing lens frame 305. The supporting seat is further provided with a knob adjuster 307, the knob adjuster 307 is provided with a push rod 3071 parallel to the guide rail 308, the push rod 3071 is used for driving the focusing frame 306 to reciprocate along the guide rail 308, the focusing frame 306 is provided with a blocking arm 3061, and the blocking arm 3061 extends to the front of the push rod 3071 to obtain the driving force of the push rod 3071. In addition, the third casing 3015 has an opening, the knob regulator 307 is exposed from the opening to the outside of the casing 301 for the focusing operation, and the opening is covered by a protective cover 309. Based on this, operating personnel only need twist knob regulator 307, makes ejector pin 3071 drive focusing frame 306 move along guide rail 308, changes the position of collimating mirror 302 piece and focusing mirror 303 piece, and the distance between the two and light-emitting reflection lens 203 promptly can adjust the focus of the laser that jets out from cutting nozzle 202, and then changes the depth of processing in schizolysis groove, realizes processing the connecting rod of multiple specification, and easy operation is convenient. In the present embodiment, in order to ensure the precision of focusing, the knob adjuster 307 is preferably a dial knob adjuster 307; in addition, the third casing 3015 of the housing 301 is detachably connected to the second casing 3012 for ease of assembly.

As shown in FIG. 3, the embodiment of the present invention provides a laser cutting apparatus for processing a connecting rod cracking tank, which adopts an integrated phosgene design. Specifically, a compressed air channel 2045 is arranged inside the cutting head body 204, an air inlet channel 3016 communicated with the compressed air channel 2045 is arranged on the second shell plate 3012, a first airtight ring 208 is arranged between the air inlet channel 3016 and the compressed air channel 2045, and an air inlet hole for externally connecting a compressed air pipeline is formed in the surface of the second shell plate 3012 by the air inlet channel 3016; the mounting frame 205 is provided with an air outlet channel 2051 communicated with the compressed air channel 2045, a second airtight ring 209 is arranged between the air outlet channel 2051 and the compressed air channel 2045, and an air outlet hole communicated with the cutting nozzle 202 is formed in the side surface, facing the outlet channel outlet 2042, of the mounting frame 205 of the air outlet channel 2051. Based on this, when shooting out the laser cutting schizolysis groove, cutting nozzle 202 still jets compressed air, and compressed air can clear up smear metal and dust in time to protect laser cutting head 2 not receive the destruction.

As shown in fig. 1, fig. 2, fig. 7 and fig. 8, the laser cutting device for processing a connecting rod splitting slot according to an embodiment of the present invention further includes a connecting seat 5 having a cavity 501, a surface of the connecting seat 5 facing away from the cavity 501 is a mounting surface, the non-rotating end 102 of the motor 1 is connected to the mounting surface, a third through hole 502 communicating with a light path of the cavity 501 is disposed on the mounting surface, and the third through hole 502 is aligned with an inlet of the incident channel 103 located at the non-rotating end 102; the connecting seat 5 is further provided with a light inlet surface 503, the light inlet surface 503 is provided with a fourth through hole 504 communicated with the light path of the concave cavity 501, and the fourth through hole 504 is used for being externally connected with a laser emission pipeline; the cavity 501 is provided with a light entrance mirror, and the light entrance mirror is used for reflecting the laser light emitted into the cavity 501 from the fourth through hole 504 into the incident channel 103 from the third through hole 502.

Specifically, as shown in fig. 9 and 10, the light entering reflection mirror includes a first light entering reflection mirror 6 and a second light entering reflection mirror 7. The first light entering reflector 6 is configured to reflect the laser light entering the cavity 501 from the fourth through hole 504 to the second light entering reflector 7, and the second light entering reflector 7 is configured to reflect the laser light reflected from the first light entering reflector 6 from the third through hole 502 into the incident channel 103. In this embodiment, the light entrance surface 503 is perpendicular to the mounting surface, the center line of the fourth through hole 504 is perpendicular to the center line of the third through hole 502, the first light entrance mirror 6 is disposed on the center line of the fourth through hole 504, the mirror surface of the first light entrance mirror 6 forms an included angle of 45 ° with the center line of the fourth through hole 504, the second light entrance mirror 7 is disposed on the rotation center line of the motor 1, and similarly, the mirror surface of the second light entrance mirror 7 forms an included angle of 45 ° with the rotation center line of the motor 1.

Further, as shown in fig. 9, the first light incoming reflective lens 6 is installed in the cavity 501 through the first frame 8, the first frame 8 includes a first base plate 801 and a first frame 802, the first base plate 801 is provided with a first strip-shaped hole 8011, the first base plate 801 is fixedly connected to the connecting seat 5 through a fastener penetrating through the first strip-shaped hole 8011, the first frame 802 is perpendicular to the first base plate 801 and is fixedly connected to the first base plate 801, and the first light incoming reflective lens 6 is installed in the first frame 802. Based on the first slot 8011, the first frame 8 can adjust the reflection angle to ensure that the laser beam emitted from the fourth slot 504 into the cavity 501 can be accurately reflected to the second light incident mirror 7. In order to improve the connection stability between the first base plate 801 and the base, the first strip-shaped holes 8011 are generally provided in two, and the two first strip-shaped holes 8011 are arranged in parallel.

Similarly, as shown in fig. 10, the second light-entering reflective lens 7 is installed in the cavity 501 through the second frame 9, the second frame 9 includes a second base plate 901 and a second frame 902, the second base plate 901 is fixedly connected to the connecting base 5, the second base plate 901 is further provided with a second strip-shaped hole 9011, the second frame 902 is fixedly connected to the second base plate 901 through a fastener inserted into the second strip-shaped hole 9011, and the second frame 902 is perpendicular to the second base plate 901, and the second light-entering reflective lens 7 is installed in the second frame 902. Based on the second strip-shaped hole 9011, the second frame 9 can also adjust the reflection angle to ensure that the laser light reflected by the first light entering reflection lens 6 can be accurately reflected into the incident channel 103 from the third through hole 502. Similarly, in order to improve the connection stability between the second frame 902 and the second base plate 901, two second bar holes 9011 are usually provided, and the two second bar holes 9011 are arranged in parallel.

As shown in fig. 2 to 5 and 8, in order to prevent chips and dust from entering the through channels of laser and affecting the propagation of laser, the embodiment of the present invention provides a laser cutting device for processing a link splitting slot, which is provided with a plurality of sealing structures. Specifically, the side of the mounting frame 205 facing the exit channel outlet 2042 is provided with a groove, and the groove is provided with a first protective lens 210 for covering the exit channel outlet 2042 and a first sealing ring 211 surrounding the first protective lens 210; a second sealing ring 212 is arranged between the cover plate 206 and the mounting opening 2044; a second protective lens 213 is arranged in the exit channel inlet 2041, a first boss protruding into the exit channel inlet 2041 is arranged at the edge of the second through hole 3014, and a third sealing ring 214 is arranged between the first boss and the second protective lens 213; a third protective lens 310 is arranged in the first through hole 3013, a first ring cover 311 is arranged on one side of the first shell 3011 facing the motor 1, a second boss protruding into the first through hole 3013 is arranged on the first ring cover 311, and a fourth sealing ring 312 is arranged between the second boss and the third protective lens 310; a fifth sealing ring 10 is arranged between the first shell 3011 and the flange 4, and a sixth sealing ring 11 is arranged between the flange 4 and the rotating end 101 of the motor 1; a seventh sealing ring 12 is arranged between the non-rotating end 102 of the motor 1 and the mounting surface of the connecting seat 5; a fourth protective lens 505 is arranged in the third through hole 502, a second ring cover 506 is further arranged in the cavity 501, a third boss protruding into the third through hole 502 is arranged on the second ring cover 506, and an eighth sealing ring 507 is arranged between the third boss and the fourth protective lens 505.

To sum up, the embodiment of the utility model provides a laser cutting device in processing connecting rod schizolysis groove, compared with the prior art, it has following beneficial effect:

1. the laser cutting device utilizes the rotation of the motor 1 to complete the angle adjustment of the laser cutting head 2, thereby realizing the processing of two symmetrical cracking grooves, and having high processing efficiency and good operability;

2. the central line of the cutting nozzle 202 and the rotating central line of the motor 1 form an included angle of 70 degrees to 90 degrees, so that the laser emitted from the cutting nozzle 202 is perpendicular to or nearly perpendicular to the inner wall of the connecting rod big-end hole, namely, the incident angle of 0 degree or nearly 0 degree can be realized, the reflectivity of the material to the laser can be further reduced to the greatest extent, the waste of energy is reduced, and the processing precision and the forming quality of the cracking groove are improved;

3. the laser cutting head 2 is small and flexible, is not influenced by the thickness of the connecting rod, and can go deep into a big end hole of the connecting rod;

4. the laser cutting device is provided with the supporting assembly, an operator only needs to twist the knob regulator 307 to change the distance between the collimating lens 302 and the focusing lens 303 and the light-emitting reflecting lens 203, the focal length of laser emitted from the cutting nozzle 202 can be adjusted, the processing depth of a cracking groove is further changed, the connecting rods with various specifications are processed, and the operation is simple and convenient;

5. this laser cutting device adopts the integrative design of phosgene, when spouting laser cutting schizolysis groove, cutting nozzle 202 still can spout compressed air, and compressed air can clear up smear metal and dust in time to protection laser cutting head 2 does not receive the destruction.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The laser cutting device for processing the connecting rod splitting slot is characterized by comprising a motor and a laser cutting head, wherein the motor comprises a rotating end and a non-rotating end opposite to the rotating end in direction;

2. The laser cutting device for machining the connecting rod splitting slot of claim 1, wherein a center line of the cutting nozzle forms an included angle of 90 degrees with a rotation center line of the motor.

3. The laser cutting device for machining the link splitting slot according to claim 1, wherein a center line of the cutting nozzle intersects with a rotation center line of the motor, and the light exit mirror is disposed at the intersection of the two.

4. The laser cutting device for machining the connecting rod splitting slot as claimed in claim 1, wherein the laser cutting head comprises a cutting head body, the exit passage is arranged inside the cutting head body and forms an exit passage inlet and an exit passage outlet on the surface of the cutting head body, the entrance passage is communicated with the exit passage light path through the exit passage inlet, and the cutting nozzle is fixed outside the exit passage outlet through a mounting frame and is communicated with the exit passage light path through the exit passage outlet.

5. The laser cutting device for machining the link splitting slot of claim 4, further comprising a focusing structure, wherein the focusing structure comprises a housing, and a collimating lens and a focusing lens which are arranged inside the housing, and the collimating lens and the focusing lens are connected with the housing through a supporting assembly;

6. The laser cutting device for machining link splitting slots of claim 5, wherein the collimating lens and the focusing lens are sequentially arranged in a laser propagation direction from the incident channel to the exit channel.

7. The laser cutting device for machining the link splitting slot as claimed in claim 5, wherein the supporting assembly comprises a supporting base and a focusing frame, the supporting base is fixedly connected with the housing and provided with a guide rail parallel to a rotation center line of the motor, the guide rail is provided with a slide block, the focusing frame is connected with the slide block, the focusing frame is provided with an alignment lens frame and a focusing lens frame, the alignment lens is arranged in the alignment lens frame, and the focusing lens is arranged in the focusing lens frame.

8. The laser cutting device for processing the link splitting slot as claimed in claim 7, wherein the supporting seat is further provided with a knob adjuster, the knob adjuster is provided with a push rod parallel to the guide rail, and the focusing frame is provided with a stop arm extending to the front of the push rod.

9. The laser cutting device for machining the connecting rod splitting slot according to claim 5, wherein a compressed air channel is arranged inside the cutting head body, the second shell plate is provided with an air inlet channel communicated with the compressed air channel, the air inlet channel forms an air inlet hole on the surface of the second shell plate, the mounting frame is provided with an air outlet channel communicated with the compressed air channel, and the air outlet channel forms an air outlet hole communicated with the cutting nozzle on the side surface of the mounting frame facing the outlet of the exit channel.

10. The laser cutting device for processing the connecting rod splitting slot according to claim 1, further comprising a connecting seat provided with a concave cavity, wherein the surface of the connecting seat, which faces away from the concave cavity, is a mounting surface, the non-rotating end of the motor is connected with the mounting surface, a third through hole communicated with the light path of the concave cavity is arranged on the mounting surface, the third through hole is aligned with an entrance of an incident channel positioned at the non-rotating end, the connecting seat is further provided with a light inlet surface, a fourth through hole communicated with the light path of the concave cavity is arranged on the light inlet surface, a light inlet reflection lens is arranged in the concave cavity, and the light inlet reflection lens is used for reflecting laser emitted into the concave cavity from the fourth through hole into the incident channel from the third through hole.