CN217045058U

CN217045058U - Modular cutting head

Info

Publication number: CN217045058U
Application number: CN202123363648.XU
Authority: CN
Inventors: 何天助; 陈文军
Original assignee: Shenzhen Ruifa Intelligent Technology Co ltd
Current assignee: Shenzhen Ruifa Intelligent Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-26
Anticipated expiration: 2031-12-29

Abstract

The utility model belongs to the field of laser cutting, in particular to a modularized cutting head, which comprises a fiber laser interface module, a collimating lens module, a focusing lens module and a nozzle, wherein the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle are detachably connected from top to bottom in sequence; a collimating lens is arranged in the collimating lens module, and a focusing lens is arranged in the focusing lens module; the cutting head is internally provided with a light path channel, the light path channel sequentially penetrates through the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle from top to bottom, and the collimating lens and the focusing lens are positioned in the light path channel. In this cutting head, this cutting head dismouting of being convenient for more, each module can produce the equipment alone, when the whole equipment of cutting head, only need with each module of assembling assemble can, it is more convenient to produce processing. And this cutting head is more convenient in the maintenance in later stage, change operations such as accessory.

Description

Modular cutting head

Technical Field

The utility model belongs to the laser cutting field, in particular to laser cutting head.

Background

Laser cutting is to focus laser emitted from a laser into a laser beam with high power density through an optical path system. The laser beam irradiates the surface of the workpiece to make the workpiece reach a melting point or a boiling point, and simultaneously, the high-pressure gas coaxial with the laser beam blows away the molten or gasified metal. With the relative position movement of the light beam and the workpiece, the material is finally formed into a kerf, thereby achieving the purpose of cutting. Wherein the laser cutting head functions to focus the laser beam so that the laser beam is irradiated to the surface of the workpiece.

The shell of the existing laser cutting head is designed in an integrated mode, the design can cause the internal structure of the cutting head to be assembled inconveniently, and the subsequent maintenance, the replacement of accessories and other operations are inconvenient. The laser cutting head of five 3D laser cutting machine of three-dimensional (application number is CN202011587714.9) as the comparison document who applies earlier, including laser cutting head body, protective cover board, nozzle body and sealing baffle, focusing mirror focus knob is installed to the bolt on the laser cutting head body, and rotates on the laser cutting head body and be connected with the fixed axle, swing joint has sealing baffle on the sliding plate, and the bolt has the connecting wire on the sealing baffle to the top bolt of connecting wire is on the laser cutting head body, the last screw connection of sealing baffle has the rubber rope, and the top screw connection of rubber rope is on the sliding plate. The comparison document has the defects of the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model discloses a first-order aim at provides a modularization cutting head, and this cutting head is through its modular design for its dismouting of being convenient for more, production and processing are more convenient.

Another object of the utility model is to provide a modularization cutting head, this cutting head is more convenient in the maintenance in later stage, change operations such as accessory.

In order to achieve the above object, the technical solution of the present invention is as follows.

A modular cutting head comprises a fiber laser interface module, a collimating lens module, a focusing lens module and a nozzle, and is characterized in that the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle are detachably connected in sequence from top to bottom; a collimating lens is arranged in the collimating lens module, and a focusing lens is arranged in the focusing lens module; the cutting head is internally provided with a light path channel, the light path channel sequentially penetrates through the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle from top to bottom, and the collimating lens and the focusing lens are both positioned in the light path channel. In this cutting head, through fiber laser interface module, collimation lens module, focus lens module, nozzle from top to bottom in proper order detachable connection for this cutting head dismouting of being convenient for more, each module can produce the equipment alone, when the whole equipment of cutting head, only need with each module of equipment assemble can, production and processing is more convenient. And this cutting head is more convenient in the maintenance in later stage, change operations such as accessory.

In the cutting head, the fiber laser interface module is used for externally connecting and fixing a fiber laser, laser is emitted from the interior of an optical fiber, and the laser sequentially passes through a collimating lens in the collimating lens module and a focusing lens in the focusing lens module from the light path channel and then is emitted from a nozzle for cutting.

Furthermore, the cutting head also comprises a collimation protection module, wherein the collimation protection module is detachably arranged between the optical fiber laser interface module and the collimation lens module, a collimation protection lens is arranged in the collimation protection module, the collimation protection lens is positioned in the optical path channel, and the collimation protection lens is positioned above the collimation lens. The side edge of the collimation protection lens is attached with a sealing ring. The arrangement of the collimation protection lens can prevent external dust from entering from the fiber laser interface module and falling on the collimation lens, so that the collimation lens is prevented from being polluted, and the sealed dustproof effect is achieved.

Furthermore, this cutting head still including the focus protection module, the detachable setting of focus protection module is between focus lens module, nozzle, be provided with the focus protection lens in the focus protection module, the focus protection lens is located the light path passageway, and the focus protection lens is located focus lens below. The side edge of the focusing protective lens is attached with a sealing ring. The arrangement of the focusing protection lens can prevent external dust from entering from the nozzle and falling on the focusing lens, thereby avoiding the pollution of the focusing lens and having the effect of sealing and dust prevention.

Furthermore, the focus protection module is including first focus protection module and the second focus protection module, and first focus protection module and the detachable connection of second focus protection module, first focus protection module and second focus protection module in all be provided with the focus protection lens, two focus protection lenses all are located the light path passageway, and all are located focus lens below. And the arrangement of the two focusing protective lenses ensures that the sealing and dustproof effects are better.

Furthermore, a mounting seat is detachably arranged between the focusing protection module and the nozzle, a gas pipe interface is arranged on the side edge of the mounting seat, a gas channel is arranged in the mounting seat, one end of the gas channel is communicated with the gas pipe interface, and the other end of the gas channel penetrates through the light path channel. The air pipe interface is used for introducing cutting auxiliary gas; after entering from the air pipe interface, the cutting auxiliary gas enters the lower end of the light path channel through the gas channel and is ejected from the nozzle together with the laser so as to assist the laser cutting work.

Furthermore, an amplifier interface for externally connecting an external heightening device is arranged on the side edge of the focusing protection module. The amplifier interface is externally connected with a signal amplifier, and the external signal amplifier is connected with an external heightening device; and acquiring the height between the nozzle and the working surface so that the height of the cutting head can be adjusted according to different heights of the processing surface when the external machine tool performs laser cutting. The height adjustment principle of the external height adjuster is the prior art.

Furthermore, this cutting head still including the lock sleeve, the fixed ceramic body that is provided with in nozzle upper end, the detachable activity of lock sleeve is cup jointed at the mount pad lower extreme, just the ceramic body and lock sleeve swing joint, the activity of lock sleeve is so that the ceramic body locking breaks away from on the mount pad or from the mount pad on the mount pad. The lock sleeve can be sleeved at the lower end of the mounting seat through threads. The ceramic body has insulating and heat-insulating effects.

Furthermore, a circulating cooling channel is arranged around the inside of the fiber laser interface module, a water inlet and a water outlet are arranged on the side edge of the fiber laser interface module, and the water inlet and the water outlet are communicated with the circulating cooling channel. The arrangement of the circulating cooling channel has the cooling effect.

Furthermore, the focusing lens module comprises a focusing lens barrel, a focusing seat and an adjusting component, the focusing lens is arranged in the focusing lens barrel, the focusing seat is movably sleeved outside the focusing lens barrel, the adjusting component is movably arranged on the focusing seat, and the adjusting component is in transmission connection with the focusing lens barrel so as to adjust the focusing lens barrel to move up and down in the focusing seat. After the laser beam penetrates through the focusing module, a focusing energy focus is formed; the focusing lens barrel can be controlled by the adjusting component to move up and down so as to adjust the height of the focusing lens, and then the positive and negative values of the focus can be adjusted to apply and cut plates with different thickness and sizes.

Furthermore, a focusing straight slot is formed in the side edge of the focusing lens barrel, the adjusting assembly comprises a rotating disc, the rotating disc is rotatably arranged on the focusing seat, a rotating protrusion is arranged at the side end of the rotating disc, and the rotating protrusion is movably arranged in the focusing straight slot. When the rotating disc rotates, the rotating bulge rotates around the center of the rotating disc, and meanwhile, the rotating disc transversely and repeatedly moves in the focusing straight groove so as to convert the rotating action of the rotating disc into the up-and-down motion of the focusing lens barrel.

Furthermore, the cutting head is also provided with a mounting and fixing plate for connecting with an external machine tool.

Specifically, the optical path channel sequentially penetrates through the fiber laser interface module, the collimation protection module, the collimation lens module, the focusing protection module, the mounting seat, the ceramic body and the nozzle from top to bottom; the collimating protective lens, the collimating lens, the focusing lens and the two focusing protective lenses are sequentially arranged in the light path channel from top to bottom. The fiber laser interface module is a QBH interface.

The beneficial effects of the utility model reside in that the utility model discloses in, through fiber laser interface module, collimation lens module, focus lens module, nozzle from top to bottom detachable connection in proper order for the dismouting of being convenient for more of this cutting head, each module can the independent production equipment, when the whole equipment of cutting head, only need with each module of assembling assemble can, production and processing is more convenient. And this cutting head is more convenient in the maintenance in later stage, change operations such as accessory.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a schematic view of the structure of the focus lens barrel and the rotating disk.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, a modular cutting head comprises a fiber laser interface module 1, a collimating lens module 3, a focusing lens module 4, and a nozzle 8, wherein the fiber laser interface module 1, the collimating lens module 3, the focusing lens module 4, and the nozzle 8 are detachably connected in sequence from top to bottom; a collimating lens 31 is arranged in the collimating lens module 3, and a focusing lens 41 is arranged in the focusing lens module 4; be provided with light path channel 0 in this cutting head, light path channel 0 from top to bottom runs through fiber laser interface module 1, collimating lens module 3, focus lens module 4, nozzle 8 in proper order, collimating lens and focus lens all are located light path channel 0. In this cutting head, through fiber laser interface module 1, collimation lens module 3, focus lens module 4, nozzle 8 from top to bottom in proper order detachable connection for this cutting head dismouting of being convenient for more, each module can produce the equipment alone, when the whole equipment of cutting head, only need with each module of equipment assemble can, it is more convenient to produce processing. And this cutting head is more convenient in the maintenance in later stage, change operations such as accessory.

In the cutting head, the fiber laser interface module 1 is used for externally connecting and fixing a fiber laser, laser is emitted from the interior of an optical fiber, and the laser passes through the collimating lens 31 in the collimating lens module 3 and the focusing lens 41 in the focusing lens module 4 from the light path channel 0 in sequence, and then is emitted from the nozzle 8 for cutting.

Further, this cutting head still includes collimation protection module 2, the detachable setting of collimation protection module 2 is between fiber laser interface module 1, collimation lens module 3, be provided with collimation protection lens 21 in the collimation protection module 2, collimation protection lens 21 is located light path channel 0, and collimation protection lens 21 is located collimation lens 31 top. The side edge of the collimation protection lens 21 is jointed with a sealing ring 22. The arrangement of the collimation protection lens 21 can prevent external dust from entering from the fiber laser interface module 1 and falling on the collimation lens 31, so as to prevent the collimation lens 31 from being polluted, and has the effect of sealing and dust prevention.

Further, this cutting head is still including focus protection module 5, the detachable setting of focus protection module 5 is between focus lens module 4, nozzle 8, be provided with focus protection lens 51 in the focus protection module 5, focus protection lens 51 is located optical path 0, and focus protection lens 51 is located focus lens 41 below. The side of the focusing protection lens 51 is attached with a sealing ring 52. The focusing protection lens 51 can prevent external dust from entering from the nozzle 8 and falling on the focusing lens, so as to prevent the focusing lens 41 from being polluted, and has the effect of sealing and dust prevention.

Further, the focus protection module 5 includes a first focus protection module 53 and a second focus protection module 54, the first focus protection module 53 and the second focus protection module 54 are detachably connected, the first focus protection module 53 and the second focus protection module 54 are both provided with a focus protection lens 51 therein, and the two focus protection lenses 51 are both located in the optical path channel 0 and both located below the focus lens 41. The arrangement of the two focusing protective lenses 51 ensures better sealing and dust-proof effects.

Further, a mounting seat 6 is detachably arranged between the focusing protection module 5 and the nozzle 8, a gas pipe connector 61 is arranged on the side edge of the mounting seat 6, a gas channel 62 is arranged in the mounting seat 6, one end of the gas channel 62 is communicated with the gas pipe connector 61, and the other end of the gas channel 62 is communicated into the light path channel 0 in a penetrating manner. An air pipe connector 61 for introducing cutting auxiliary gas; after entering from the air tube port 61, the cutting assisting gas enters the lower end of the optical path channel 0 through the gas channel 62, and is emitted from the nozzle 8 together with the laser to assist the laser cutting operation.

Further, an amplifier interface 63 for externally connecting an external booster is arranged on the side edge of the focusing protection module 5. The mounting base is provided with a sensor which is connected with an amplifier interface 63. The amplifier interface is externally connected with a signal amplifier, and the external signal amplifier is connected with an external heightening device; the height between the nozzle 8 and the work surface is obtained so that the height of the cutting head can be adjusted according to different heights of the work surface when an external machine tool performs laser cutting. The height adjustment principle of the external height adjuster is the prior art.

Furthermore, this cutting head still includes lock sleeve 64, the fixed ceramic body 7 that is provided with in nozzle 8 upper end, the detachable activity of lock sleeve 64 is cup jointed at mount pad 6 lower extreme, just ceramic body 7 and lock sleeve 64 swing joint, lock sleeve 64 moves about on mount pad 6 so that ceramic body 7 locks on mount pad 6 or break away from mount pad 6. The locking sleeve 64 can be sleeved on the lower end of the mounting seat 6 through threads. The ceramic body 7 has the effects of insulation and heat insulation.

Furthermore, a circulating cooling channel 11 is arranged around the inside of the fiber laser interface module 1, a water inlet 12 and a water outlet 13 are arranged on the side edge of the fiber laser interface module 1, and the water inlet 12 and the water outlet 13 are both communicated with the circulating cooling channel 11. The arrangement of the circulating cooling channel 11 has the effect of cooling.

Further, the focusing lens module 4 includes a focusing lens barrel 42, a focusing seat 43 and an adjusting component, the focusing lens 41 is disposed in the focusing lens barrel 42, the focusing seat 43 is movably sleeved outside the focusing lens barrel 42, the adjusting component is movably disposed on the focusing seat 43, and the adjusting component is in transmission connection with the focusing lens barrel 42 to adjust the focusing lens barrel 42 to move up and down in the focusing seat 43.

Further, a focusing straight slot 421 is formed in the side edge of the focusing lens barrel 42, the adjusting assembly includes a rotating disc 44, the rotating disc 44 is rotatably disposed on the focusing base 421, a rotating protrusion 441 is disposed at the side end of the rotating disc 44, and the rotating protrusion 441 is movably disposed in the focusing straight slot 421.

Furthermore, the cutting head is also provided with a mounting and fixing plate 9 for connecting with an external machine tool. The installation fixing plate can be installed on the side surface of any one module of the collimation protection module 2, the collimation lens module 3, the focusing lens module 4 and the focusing protection module 5, and can be preferably detachably arranged on the side surface of the collimation lens module 3. The principle of the above-mentioned detachable connection mode between the structures of modules and the like is the prior art, for example, by screw holes, screws and the like.

Specifically, the optical path channel sequentially penetrates through the fiber laser interface module 1, the collimation protection module 2, the collimation lens module 3, the focusing lens module 4, the focusing protection module 5, the mounting seat 6, the ceramic body 7 and the nozzle 8 from top to bottom; the collimating protective lens, the collimating lens, the focusing lens and the two focusing protective lenses are sequentially arranged in the light path channel from top to bottom. The fiber laser interface module 1 is a QBH interface.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A modular cutting head comprises a fiber laser interface module, a collimating lens module, a focusing lens module and a nozzle, and is characterized in that the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle are detachably connected in sequence from top to bottom; a collimating lens is arranged in the collimating lens module, and a focusing lens is arranged in the focusing lens module; the cutting head is internally provided with a light path channel, the light path channel sequentially penetrates through the fiber laser interface module, the collimating lens module, the focusing lens module and the nozzle from top to bottom, and the collimating lens and the focusing lens are both positioned in the light path channel.

2. The modular cutting head of claim 1 further comprising a collimating protection module removably disposed between the fiber laser interface module and the collimating lens module, wherein a collimating protection lens is disposed within the collimating protection module, the collimating protection lens is disposed within the optical path channel, and the collimating protection lens is disposed above the collimating protection lens.

3. The modular cutting head of claim 1, further comprising a focus protection module detachably disposed between the focus lens module and the nozzle, wherein a focus protection lens is disposed in the focus protection module, the focus protection lens is disposed in the light path channel, and the focus protection lens is disposed below the focus lens.

4. The modular cutting head of claim 3, wherein the focus protection module comprises a first focus protection module and a second focus protection module, the first focus protection module and the second focus protection module are detachably connected, and focus protection lenses are disposed in the first focus protection module and the second focus protection module, and both the first focus protection module and the second focus protection module are disposed in the optical path channel and below the focus lenses.

5. The modular cutting head of claim 3, wherein a mounting seat is detachably arranged between the focus protection module and the nozzle, a gas pipe connector is arranged on a side edge of the mounting seat, a gas channel is arranged in the mounting seat, one end of the gas channel is communicated with the gas pipe connector, and the other end of the gas channel penetrates through the light path channel.

6. The modular cutting head of claim 5, wherein the focus protection module is provided with an amplifier interface on a side for externally connecting an external height adjuster.

7. The modular cutting head of claim 5, further comprising a locking sleeve, wherein a ceramic body is fixedly arranged at the upper end of the nozzle, the locking sleeve is detachably movably sleeved at the lower end of the mounting seat, the ceramic body is movably connected with the locking sleeve, and the locking sleeve is movable on the mounting seat to enable the ceramic body to be locked on the mounting seat or separated from the mounting seat.

8. The modular cutting head as claimed in claim 1, wherein a circulation cooling channel is arranged around the fiber laser interface module, a water inlet and a water outlet are arranged on the side of the fiber laser interface module, and the water inlet and the water outlet are communicated with the circulation cooling channel.

9. The modular cutting head of claim 1, wherein the focusing lens module comprises a focusing lens barrel, a focusing seat and an adjusting component, the focusing lens is arranged in the focusing lens barrel, the focusing seat is movably sleeved outside the focusing lens barrel, the adjusting component is movably arranged on the focusing seat, and the adjusting component is in transmission connection with the focusing lens barrel so as to adjust the focusing lens barrel to move up and down in the focusing seat.

10. The modular cutting head of claim 9, wherein a focusing straight slot is formed in a side edge of the focusing barrel, the adjusting assembly comprises a rotating disc, the rotating disc is rotatably disposed on the focusing base, a rotating protrusion is disposed at a side end of the rotating disc, and the rotating protrusion is movably disposed in the focusing straight slot.