CN220178395U - Cutting head focusing device and laser cutting head - Google Patents

Abstract

The utility model provides a cutting head focusing device and a laser cutting head, and relates to the technical field of laser cutting heads, wherein the cutting head focusing device comprises a fixed seat, a focusing lens barrel is arranged in the fixed seat, a focusing lens is arranged in the focusing lens barrel, a guide sleeve and a lifting sleeve are sequentially sleeved outside the focusing lens barrel from inside to outside, the guide sleeve is fixedly arranged on the fixed seat, and a linear guide groove is formed in the side wall of the guide sleeve; the lifting sleeve is rotatably arranged on the outer side of the guide sleeve, and a spiral groove is formed in the side wall of the lifting sleeve; the focusing lens barrel is also provided with a guide shaft which sequentially penetrates through the linear guide groove and the spiral groove. Compared with the traditional focusing device, the utility model can greatly improve the flexibility of the whole focusing process, reduce the volume and weight of the whole focusing device and the corresponding laser cutting head, and make the operation more flexible.

Description

Cutting head focusing device and laser cutting head

Technical Field

The utility model relates to the technical field of laser cutting heads, in particular to a cutting head focusing device and a laser cutting head.

Background

As a novel heat cutting technology, the laser cutting technology has the advantages of high cutting speed, high production efficiency, good quality of cut end surfaces, small heat affected zone, environmental protection and the like, and has become one of the main metal plate cutting modes. Meanwhile, with the wide application of the three-dimensional five-axis laser cutting machine, the three-dimensional five-axis cutting head is also an essential item for research as an important component of the laser cutting machine.

At present, the three-dimensional five-axis cutting head focusing device in the market still adopts the structure of a flat cutting head, namely the three-dimensional five-axis cutting head focusing device in the market mostly adopts a ball screw type structure to focus the focusing sheet, and generally drives a transmission gear to rotate through a gear arranged at the output end of a motor when focusing is carried out, then drives a screw thread to rotate through the transmission gear, and drives the focusing lens barrel to slide up and down through a screw thread matching structure between the screw thread and the focusing lens barrel so as to adjust the position of the focusing lens.

However, in the practical operation process, the cutting head focusing device has the defects of complex structure, large volume and the like, and the focusing lens is mainly matched by virtue of threads to realize the position adjustment of the focusing lens, so that the problems of inflexible movement, easiness in abrasion and the like in the focusing process are also solved, and the problems of wire clamping and the like of a focusing lens barrel in the focusing process are solved, so that the focusing precision is influenced.

Disclosure of Invention

The utility model aims to solve the problems of large volume, inflexible movement and the like of the conventional cutting head focusing device, and provides a novel cutting head focusing device and a laser cutting head, which can flexibly focus a focusing lens.

In order to achieve the above purpose, in one aspect, the present utility model provides a cutting head focusing device, which comprises a fixing seat, wherein a focusing lens barrel is arranged in the fixing seat, a focusing lens is arranged in the focusing lens barrel, a guide sleeve and a lifting sleeve are sequentially sleeved outside the focusing lens barrel from inside to outside, the guide sleeve is fixedly arranged on the fixing seat, and a linear guide groove is arranged on the side wall of the guide sleeve; the lifting sleeve is rotatably arranged on the outer side of the guide sleeve, and a spiral groove is formed in the side wall of the lifting sleeve; the focusing lens barrel is also provided with a guide shaft which sequentially penetrates through the linear guide groove and the spiral groove. When focusing is needed, the utility model can directly drive the spiral groove to rotate at a corresponding angle through the rotation of the lifting sleeve, and drive the focusing lens barrel to move along the axis direction of the linear guide groove through the cooperation among the spiral groove, the linear guide groove and the guide shaft so as to achieve the purpose of flexible focusing. Meanwhile, compared with the traditional focusing device, the utility model does not adopt a threaded matching structure, so that the flexibility of the whole focusing process can be greatly improved, and the volume and the weight of the whole focusing device can be reduced.

Further, three guide shafts are uniformly arranged on the outer side of the focusing lens barrel along the circumferential direction, three linear guide grooves are uniformly arranged on the guide sleeve along the circumferential direction, three spiral grooves are uniformly arranged on the lifting sleeve along the circumferential direction, each guide shaft penetrates into the corresponding linear guide groove and the corresponding spiral groove respectively, and three-point positioning is carried out on the focusing lens barrel so as to ensure that the focusing lens barrel can accurately move along the axis, and further ensure the precision of the focusing lens.

Further, an upper outer cover and a lower outer cover are respectively arranged on two sides of the fixed seat, and two ends of the focusing lens barrel are respectively protected through the upper outer cover and the lower outer cover.

Further, the lower outer cover is detachably mounted on the lower side of the fixing base through bolts, so that an operator can conveniently replace the focusing lens.

Further, the upper outer cover is detachably mounted on the upper side of the fixing base through bolts, so that an operator can maintain the upper structure of the whole focusing device conveniently.

Further, the lifting sleeve is in transmission connection with a rotary driving mechanism, and the rotary driving mechanism can be installed on the fixing seat through fasteners such as bolts.

Further, the rotary driving mechanism comprises a driving motor, the output end of the driving motor is in transmission connection with a pinion, the pinion is meshed with a large gear, and the large gear is fixedly sleeved on the outer side of the lifting sleeve and drives the lifting sleeve to rotate.

Further, the large gear is rotatably arranged between the fixed seat and the upper outer cover through the guide ring, so that an operator can conveniently maintain the large gear and the small gear.

Further, the focusing lens is arranged at the lower end of the focusing lens barrel, the lower end of the focusing lens is provided with a focusing cushion block, and the focusing cushion block is in threaded connection with the focusing lens barrel and supports and fixes the focusing lens.

On the other hand, the utility model also provides a laser cutting head which comprises the cutting head focusing device.

From the above technical scheme, the utility model has the following advantages: when focusing is needed, the utility model can directly drive the spiral groove to rotate at a corresponding angle through the rotation of the lifting sleeve, and drive the focusing lens barrel to move along the axis direction of the linear guide groove through the cooperation among the spiral groove, the linear guide groove and the guide shaft so as to achieve the purpose of flexible focusing. Meanwhile, compared with the traditional focusing device, the utility model does not adopt a thread matching structure, so that the flexibility of the whole focusing process can be greatly improved, and the volume and the weight of the whole focusing device and the corresponding laser cutting head are reduced, so that the operation of the device is more flexible.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

fig. 2 is a cross-sectional view of a first embodiment of the present utility model.

In the figure: 1. an upper housing; 2. a guide shaft; 3. a guide ring; 4. a large gear; 5. a focusing lens; 6. a focusing cushion block; 7. a lower housing; 8. a driving motor; 9. a fixing seat; 10. a pinion gear; 11. a guide sleeve; 12. a focusing sleeve; 13. lifting sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1 and 2, the first embodiment provides a focusing device for a cutting head, which includes a fixing seat 9, wherein an upper housing 1 and a lower housing 7 are respectively mounted on the upper and lower sides of the fixing seat 9 through bolts, and a lifting sleeve 13, a guide sleeve 11 and a focusing lens barrel 12 are sequentially arranged inside the upper housing 1 and the lower housing 7 from outside to inside.

Wherein, the lifting sleeve 13 is rotatably installed in the upper outer sleeve 1, and three spiral grooves are uniformly arranged on the side wall of the lifting sleeve 13 along the circumferential direction, and the axes of the spiral grooves and the focusing lens barrel 12 are in the same straight line; the outer side of the lifting sleeve 13 is in transmission connection with a rotary driving mechanism. The rotary driving mechanism comprises a driving motor 8, the driving motor 8 is fixedly arranged on the outer side of a fixed seat 9, a pinion 10 is connected to the output end of the driving motor 8 in a transmission way after penetrating through the fixed seat 9, a large gear 4 is meshed with the pinion 10, the large gear 4 is fixedly sleeved on the outer side of a lifting sleeve 13 and is rotatably arranged between an upper outer sleeve 1 and the fixed seat 9 through a guide ring 3, at the moment, the rotary driving mechanism can drive the pinion 10 to rotate through the driving motor 8, and drive the large gear 4 to rotate through the pinion 10, so that the lifting sleeve 13 is driven to rotate.

The guide sleeve 11 is fixedly mounted on the fixing seat 9, three linear guide grooves are uniformly formed in the side wall of the guide sleeve 11 along the circumferential direction, and the length direction of the linear guide grooves is the axial direction of the focusing lens barrel 12. The focusing lens barrel 12 is vertically and slidably arranged in the guide sleeve 11, the lower end of the focusing lens barrel 12 is provided with the focusing lens 5 through the focusing cushion block 6, three guide shafts 2 are uniformly arranged on the outer wall of the focusing lens barrel 12 along the circumferential direction, and the three guide shafts 2 respectively extend into the corresponding linear guide grooves and the corresponding spiral grooves.

At this time, when focusing is needed, the utility model can directly drive the spiral groove to rotate at a corresponding angle through the rotation of the lifting sleeve 13, and drive the focusing lens barrel 12 to move along the axial direction of the linear guide groove through the cooperation among the spiral groove, the linear guide groove and the guide shaft 2 so as to achieve the purpose of flexible focusing. Meanwhile, compared with the traditional focusing device, the utility model does not adopt a threaded matching structure, so that the flexibility of the whole focusing process can be greatly improved, and the volume and the weight of the whole focusing device can be reduced.

Example two

The second embodiment provides a laser cutting head, which includes the cutting head focusing device described in the first embodiment.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The cutting head focusing device comprises a fixed seat, a focusing lens barrel is arranged in the fixed seat, and a focusing lens is arranged in the focusing lens barrel, and the cutting head focusing device is characterized in that a guide sleeve and a lifting sleeve are sleeved outside the focusing lens barrel in sequence from inside to outside, the guide sleeve is fixedly arranged on the fixed seat, and the side wall of the guide sleeve is provided with a linear guide groove; the lifting sleeve is rotatably arranged on the outer side of the guide sleeve, and a spiral groove is formed in the side wall of the lifting sleeve; the focusing lens barrel is also provided with a guide shaft which sequentially penetrates through the linear guide groove and the spiral groove.

2. The cutting head focusing device according to claim 1, wherein three guide shafts are uniformly arranged on the outer side of the focusing lens barrel along the circumferential direction, three linear guide grooves are uniformly arranged on the guide sleeve along the circumferential direction, three spiral grooves are uniformly arranged on the lifting sleeve along the circumferential direction, and each guide shaft penetrates into the corresponding linear guide groove and the corresponding spiral groove respectively.

3. The cutting head focusing device of claim 1, wherein the upper housing and the lower housing are respectively mounted on both sides of the fixing base.

4. A cutting head focusing assembly as in claim 3 wherein the lower housing is removably mounted to the underside of the mounting base by bolts.

5. The cutting head focusing assembly of claim 3, wherein the upper housing is detachably mounted to an upper side of the fixed base by bolts.

6. A cutting head focusing assembly as in claim 3 wherein the lifting sleeve is drivingly connected to the rotary drive mechanism.

7. The cutting head focusing device as claimed in claim 6, wherein the rotary driving mechanism comprises a driving motor, an output end of the driving motor is in transmission connection with a pinion, the pinion is engaged with a large gear, and the large gear is fixedly sleeved on the outer side of the lifting sleeve.

8. The cutting head focusing assembly of claim 7, wherein the large gear is rotatably mounted between the fixed base and the upper housing by a guide ring.

9. The cutting head focusing device as claimed in claim 1, wherein the focusing lens is mounted at a lower end of the focusing lens barrel, a focusing pad is provided at the lower end of the focusing lens, and the focusing pad is screwed with the focusing lens barrel.

10. A laser cutting head comprising a cutting head focusing apparatus according to any one of claims 1-9.