Laser cutting head with stray light intercepting structure

Abstract

The utility model provides a laser cutting head with a stray light interception structure, which comprises a laser cutting head shell, a grating assembly, a collimation assembly and a focusing assembly are sequentially arranged in the laser cutting head shell from top to bottom, a laser connector is arranged above the grating assembly, the grating assembly can intercept stray light emitted by the laser connector, and the focusing assembly can intercept the stray light emitted by the laser connector. The grating assembly comprises a grating shell, a grating body and a grating adjusting piece, and the grating body is arranged in the grating shell. The laser cutting head has the beneficial effects that the problem that a nozzle is hot or even burnt out due to the fact that a laser cutting head in the prior art has more stray light can be solved, by using the product structure, the grating body can well intercept the stray light, the possibility that the nozzle is hot is reduced, the nozzle is prevented from being burnt out, and the service life of the laser cutting head is prolonged. And the position of the grating body relative to the laser connector is adjusted through the grating adjusting piece, so that the use flexibility is higher, the operation experience of operators is improved, and the competitiveness of enterprises is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting devices, in particular to a laser cutting head with a stray light interception structure. Background Art

[0002] With the development of social science and technology, my country's manufacturing industry is facing a transformation towards high-end and intelligentization. As a basic processing, the penetration rate of laser technology in various links of industrial production is also rising. Laser cutting is a technology that uses a high-power density fiber laser beam to irradiate the material to be cut, so that the irradiated part of the material vaporizes to form tiny holes, and as the fiber laser beam moves, the holes are continuously formed to complete the cutting of the material.

[0003] In the actual production and processing process, the laser cutting head is connected to different lasers, and the laser quality and brand are different. Some lasers will have a large divergence angle or excess stray light, which will cause the nozzle of the laser cutting head to become hot when passing through this stray light, resulting in unstable capacitance and even burning of the nozzle, which is not conducive to improving the competitiveness of the enterprise. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a laser cutting head with a stray light interception structure, which solves the problem that the laser cutting head in the prior art has a lot of stray light, resulting in the nozzle becoming hot or even burning the nozzle.

[0005] The utility model discloses a laser cutting head with a stray light intercepting structure, comprising a laser cutting head shell, wherein a grating component, a collimating component and a focusing component are sequentially arranged from top to bottom in the laser cutting head shell, a laser connector is arranged above the grating component, the grating component can intercept the stray light emitted from the laser connector, the grating component comprises a grating shell, a grating body and a grating adjusting member, the grating body is arranged in the grating shell, and the grating adjusting member can adjust the distance between the grating body and the laser connector.

[0006] The utility model is further improved, the grating adjustment member is an adjustment disk, the grating housing is provided with an adjustment movable groove and an adjustment dial that cooperate with the adjustment disk, a rectangular guide groove is provided in the adjustment movable groove, a driving groove is provided on the lower surface of the adjustment disk, a connecting member is provided on the grating body, the connecting member passes through the guide groove and is arranged in the driving groove, the adjustment disk can move in the adjustment movable groove to change the relative position of the connecting member in the rectangular guide groove, and the adjustment dial can obtain the parameters adjusted by the adjustment dial.

[0007] The utility model is further improved to include an anti-friction bearing, which is sleeved on one end of the connecting piece close to the driving groove. The anti-friction bearing can reduce the friction between the connecting piece and the driving groove.

[0008] The utility model is further improved in that the driving groove is in a spiral shape, the adjusting movable groove is in a circular shape, and the adjusting disk can rotate relative to the adjusting movable groove.

[0009] The utility model is further improved in that an adjusting sealing rubber ring is sleeved on the outer side of the adjusting disk, and the adjusting sealing rubber ring can cooperate with the side wall of the adjusting movable groove to achieve the sealing of the adjusting movable groove.

[0010] The utility model is further improved and also includes a locking screw. The adjusting dial is arranged above the adjusting movable groove. The adjusting dial includes an adjusting boss and an adjusting plate arranged on the outside of the adjusting boss. The adjusting dial is provided with an adjusting hole that cooperates with the adjusting boss. The adjusting boss is arranged in the adjusting hole. The adjusting dial is provided with a locking hole. The locking screw can pass through the locking hole to lock the adjusting plate and the adjusting dial.

[0011] The utility model is further improved in that a grating active cavity cooperating with the grating body is arranged in the grating housing, and grating sealing rubber rings are sleeved on the outer sides of both ends of the grating body, and the grating sealing rubber rings can ensure the sealing of the grating active cavity.

[0012] The utility model is further improved in that a mounting base plate is arranged on the grating housing, a water cooling interface is arranged in the mounting base plate, a water cooling channel is arranged in the grating housing, the water cooling channel is communicated with the water cooling interface, and the water cooling channel can dissipate heat for the grating body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a laser cutting head with a stray light intercepting structure. By adopting its structure, the problem of a large amount of stray light in the laser cutting head in the prior art can be effectively solved, which leads to the problem of the nozzle heating or even burning out. By using this product structure, the grating body can well intercept the stray light, reduce the possibility of the nozzle heating, and avoid the nozzle from being burned out. The position of the grating body relative to the laser connector can be adjusted by the grating adjustment part, which makes the use more flexible, improves the operator's operating experience, and is conducive to improving the competitiveness of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of the laser cutting head with a structure for intercepting stray light;

[0016] Figure 2is a schematic diagram of the structure of the grating component;

[0017] Figure 3 This is a schematic diagram of the decomposition structure of the grating component;

[0018] Figure 4 is a cross-sectional view of a grating assembly;

[0019] Figure 5 Schematic diagram of the structure of the grating adjustment component. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 As shown, the utility model is a laser cutting head with a stray light interception structure, comprising a laser cutting head shell, in which a grating component 1, a collimation component 2 and a focusing component 3 are arranged in sequence from top to bottom, and a laser connector 4 is arranged above the grating component 1.

[0024] The grating assembly 1 comprises a grating housing 11 , a grating body 12 and a grating adjusting member 13 , wherein the grating body 12 is arranged in the grating housing 11 .

[0025] A mounting base plate 14 is arranged on the grating housing 11 , a water cooling interface is arranged in the mounting base plate 14 , a water cooling channel is arranged in the grating housing 11 , and the water cooling channel is communicated with the water cooling interface.

[0026] Since the grating body 12 can block stray light, but the blocked stray light will be absorbed by the grating body 12 and converted into heat, the water cooling flow and the water cooling interface can be used to perform a water cooling cycle to dissipate heat from the grating body 12.

[0027] However, since the heat dissipation capacity of the water cooling system is limited and the amount of stray light from different lasers is also different, during the operation of the laser, the closer the light beam is to the laser connector 4, the smaller the cross-sectional area of ​​the light is. When the laser beam is fixed and the aperture of the grating body 12 remains unchanged, the closer the grating body 12 is to the laser connector 4, the less stray light is blocked. The farther the grating body 12 is from the laser connector 4, the more stray light is blocked, and the heat generated by the grating body 12 is higher. By setting the grating adjustment member 13, the distance between the grating body 12 and the laser connector 4 can be adjusted according to actual conditions to ensure that the appropriate temperature is used for operation.

[0028] The grating adjustment member 13 is an adjustment disk. The grating housing 11 is provided with an adjustment movable groove 111 and an adjustment dial 112 that cooperate with the adjustment disk. A rectangular guide groove 1111 is provided in the adjustment movable groove 111. A driving groove 131 is provided on the lower surface of the adjustment disk. A connecting member 121 is provided on the grating body 12. The connecting member 121 passes through the rectangular guide groove 1111 and is arranged in the driving groove 131.

[0029] The adjusting disk can flexibly change the relative position of the connecting member 121 in the rectangular guide groove 1111 in the adjusting movable groove 111, and the adjusting dial 112 can obtain the parameters adjusted by the adjusting dial 112, thereby improving the user experience.

[0030] The laser cutting head with a stray light interception structure further includes an anti-friction bearing 15 , which is sleeved on one end of the connecting member 121 close to the driving groove 131 . The anti-friction bearing 15 can reduce the friction between the connecting member 121 and the driving groove 131 .

[0031] The driving groove 131 is in a spiral shape, the adjusting movable groove 111 is in a circular shape, and the adjusting disk can rotate relative to the adjusting movable groove 111 .

[0032] By rotating the adjusting disk, the spiral driving groove 131 will drive the connecting member 121 to move, and through the setting of the rectangular guide groove 1111, the grating body 12 can only move forward and backward, so that the grating body 12 is close to or away from the laser connector 4.

[0033] It is obvious that the shape of the driving groove 131 is spiral, the adjusting movable groove 111 is circular, and the adjusting disk can rotate relative to the adjusting movable groove 111. By rotating the adjusting disk, the spiral driving groove 131 will drive the connecting member 121 to move, and through the setting of the rectangular guide groove 1111, the grating body 12 can only move forward and backward, so that the grating body 12 is close to or away from the laser connector 4, and the driving connecting member 121 is driven to move. The driving teeth can also be oblique linear guide grooves, and the adjusting movable groove 111 is rectangular. The adjusting disk is pushed left and right in the adjusting movable groove 111, and the movement direction of the adjusting disk is perpendicular to the movement direction of the connecting member 121. The linear guide groove drives the connecting member 121 to move, which can also achieve the effect of the above-mentioned scheme.

[0034] An adjusting sealing rubber ring 132 is sleeved on the outer side of the adjusting disk, and the adjusting sealing rubber ring 132 can cooperate with the side wall of the adjusting movable groove 111 to achieve the sealing of the adjusting movable groove 111 .

[0035] The laser cutting head with a stray light intercepting structure also includes a locking screw 16. An adjusting dial 112 is arranged above the adjusting movable groove 111. The adjusting dial includes an adjusting boss and an adjusting plate arranged on the outside of the adjusting boss. An adjusting hole matching the adjusting boss is arranged on the adjusting dial 112. The adjusting boss is arranged in the adjusting hole. A locking hole 1121 is arranged on the adjusting dial 112.

[0036] The locking screw 16 can pass through the locking hole 1121 to lock the adjustment plate and the adjustment dial 112 to prevent the position of the grating body 12 from shifting and affecting the user's experience.

[0037] A grating active cavity cooperating with the grating body 12 is arranged in the grating housing 11 , and grating sealing rubber rings 122 are sleeved on the outer sides of both ends of the grating body 12 , and the grating sealing rubber rings 122 can ensure the sealing of the grating active cavity.

[0038] The present embodiment provides a use process of a laser cutting head with a stray light interception structure as follows: The present embodiment of the utility model provides the advantages of less stray light and high adjustment flexibility compared to existing laser cutting heads.

[0039] First, the user rotates the adjustment disk according to actual conditions, and the spiral driving groove 131 on the lower end surface of the adjustment disk will push the connecting piece 121 in the rectangular guide groove 1111 to adjust the distance between the grating body 12 and the laser connector 4.

[0040] When the adjustment is completed, the locking screw 16 is tightened to lock and fix the adjustment.

[0041] From the above, it can be seen that the beneficial effect of the utility model is: adopting its mechanism can effectively solve the problem of the laser cutting head in the prior art having a lot of stray light, which leads to the problem of the nozzle heating or even burning the nozzle. By using this product structure, the grating body 12 can well intercept the stray light, reduce the possibility of the nozzle heating, and avoid the nozzle from being burned. The position of the grating body 12 relative to the laser connector 4 can be adjusted by the grating adjustment member 13, which makes the use more flexible, improves the operator's operating experience, and is conducive to improving the competitiveness of the enterprise.

[0042] The specific implementation methods described above are preferred implementation methods of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A laser cutting head with a structure for intercepting stray light, characterized in that: It comprises a laser cutting head shell, in which a grating component, a collimation component and a focusing component are arranged in sequence from top to bottom, a laser connector is arranged above the grating component, the grating component can intercept stray light emitted from the laser connector, the grating component comprises a grating shell, a grating body and a grating adjustment member, the grating body is arranged in the grating shell, and the grating adjustment member can adjust the distance between the grating body and the laser connector.

2. The laser cutting head with a stray light interception structure according to claim 1, characterized in that: The grating adjustment member is an adjustment disk, and the grating housing is provided with an adjustment movable groove and an adjustment dial that cooperate with the adjustment disk, a rectangular guide groove is provided in the adjustment movable groove, a driving groove is provided on the lower surface of the adjustment disk, and a connecting member is provided on the grating body, and the connecting member passes through the guide groove and is arranged in the driving groove. The adjustment disk can move in the adjustment movable groove to change the relative position of the connecting member in the rectangular guide groove, and the adjustment dial can obtain the parameters adjusted by the adjustment dial.

3. The laser cutting head with a stray light interception structure according to claim 2, characterized in that: It also includes an anti-friction bearing, which is sleeved on one end of the connecting member close to the driving groove, and the anti-friction bearing can reduce the friction between the connecting member and the driving groove.

4. The laser cutting head with a stray light interception structure according to claim 2, characterized in that: The driving groove is in a spiral shape, the adjusting movable groove is in a circular shape, and the adjusting disk can rotate relative to the adjusting movable groove.

5. The laser cutting head with a stray light interception structure according to claim 4, characterized in that: An adjusting sealing rubber ring is sleeved on the outer side of the adjusting disk, and the adjusting sealing rubber ring can cooperate with the side wall of the adjusting movable groove to achieve the sealing of the adjusting movable groove.

6. The laser cutting head with a stray light interception structure according to claim 4, characterized in that: It also includes a locking screw, the adjustment dial is arranged above the adjustment movable slot, the adjustment dial includes an adjustment boss and an adjustment plate arranged outside the adjustment boss, the adjustment dial is provided with an adjustment hole that cooperates with the adjustment boss, the adjustment boss is arranged in the adjustment hole, the adjustment dial is provided with a locking hole, and the locking screw can pass through the locking hole to lock the adjustment plate and the adjustment dial.

7. The laser cutting head with a stray light interception structure according to claim 2, characterized in that: The grating housing is provided with a grating active cavity cooperating with the grating body, and grating sealing rubber rings are sleeved on the outer sides of both ends of the grating body, and the grating sealing rubber rings can ensure the sealing of the grating active cavity.

8. The laser cutting head with a stray light interception structure according to any one of claims 1 to 7, characterized in that: The grating housing is provided with a mounting base plate, a water cooling interface is provided in the mounting base plate, a water cooling channel is provided in the grating housing, the water cooling channel is communicated with the water cooling interface, and the water cooling channel can dissipate heat for the grating body.

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