Multi-air-knife protecting and purging device

By designing a multi-air knife protection device with an air knife mounting plate and screw connection, the problems of large size and heavy weight of existing devices are solved, achieving miniaturization, lightweighting and flexible installation. It can effectively protect the lens and blow away splashes, forming a stable air path.

CN223587906UActive Publication Date: 2025-11-25TIANJIN LEYAN FENGXU TECH CO LTD
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Patent Information

Application Number
CN202423096944.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2025-11-25
Estimated Expiration
2034-12-16

AI Technical Summary

Technical Problem

Existing multi-knife protection devices are large and heavy, require high-strength mounting brackets, are prone to interference with workpieces, and pose a risk of collision when the laser beam is tilted during processing. Furthermore, existing devices need to be small and lightweight when installed next to the lens.

Method used

Design a multi-air knife protection and purging device, including an air knife mounting plate body, a horizontal air knife and a circular air knife, which are connected and fixed by screws to realize the adjustment of the air knife outlet angle, and form a stable protective air path by combining the horizontal and circular air knife air curtains.

Benefits of technology

It achieves small size, light weight, easy installation, flexible adjustment, protects the lens and blows away splashes, forming a stable protective air path.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multi-air-knife protecting and purging device which comprises an air knife mounting plate body, horizontal air knives and circular air knives, and each horizontal air knife comprises a horizontal air knife fixing plate groove located in the air knife mounting plate body and a horizontal air knife cover plate connected with the horizontal air knife fixing plate groove. A first air inlet and a first air cavity are formed in the horizontal air knife fixing plate groove, the circular air knife comprises a circular air knife fixing plate located on the air knife mounting plate body, a circular air knife connected with the circular air knife fixing plate and a bottom plate connected with the circular air knife, a second air inlet is formed in the end face of the circular air knife, and a second air cavity is formed in the circular air knife; the bottom of the circular air knife is provided with an air cavity opening communicated with the bottom plate groove in the bottom plate. The utility model has the characteristics of small volume, light weight and convenience in installation; not only is the lens protected, but also splashing residues during laser processing can be blown away, and a stable protection gas path is formed.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to laser processing technical field, concretely relates to a kind of multi-air-knife protection and blowing device. BACKGROUND

[0002] The multi-air-knife protection device applied in laser processing cleaning equipment is that two air knives are installed on a support, one of the air knives horizontally blows air under the lens to block splashes during laser processing to protect the lens, and the other air knife is obliquely installed under the support to blow the laser processing surface to blow away the attachments removed by laser. The existing multi-air-knife protection device has the following defects: the volume is too large, the installation support is too large, and when the laser beam is inclined to process, the support and the workpiece may interfere and collide; and since the finished air knife has a large volume and weight, the installation support needs to have a certain strength to ensure the stable operation of the two air knives, which necessarily increases the strength of the installation support and the overall weight, and the protection device is installed beside the lens, so it is better to have a smaller volume and lighter weight. SUMMARY

[0003] To solve the problems in the background art, the utility model designs a multi-air-knife protection and blowing device, which aims to provide a multi-air-knife protection and blowing device with a small volume, light weight, easy installation, flexible adjustment, lens protection, and splashes blowing away.

[0004] The technical solution of the utility model comprises the following:

[0005] A multi-air-knife protection and blowing device comprises an air-knife mounting plate body, a horizontal air knife and a circular air knife. The horizontal air knife comprises a horizontal air-knife fixing plate groove on the air-knife mounting plate body, a horizontal air-knife cover plate connected with the horizontal air-knife fixing plate groove, a first air inlet and a first air cavity arranged on the horizontal air-knife fixing plate groove, and a horizontal air-knife air outlet formed between the convex edge of the horizontal air-knife fixing plate groove and the concave edge of the horizontal air-knife cover plate. The circular air knife comprises a circular air-knife fixing plate on the air-knife mounting plate body, a circular air knife connected with the circular air-knife fixing plate, a bottom plate connected with the circular air knife, a second air inlet arranged on the end face of the circular air knife, a second air cavity arranged in the circular air knife, an air cavity opening arranged on the bottom of the circular air knife and connected with the bottom plate groove on the bottom plate, and a circular air-knife air outlet formed between the outer side edge of the bottom of the circular air knife and the bottom plate groove.

[0006] Preferably, the first air inlet is arranged on the horizontal air-knife fixing plate groove at the middle of the first air cavity.

[0007] Preferably, the horizontal air-knife cover plate and the horizontal air-knife fixing plate groove are fixedly connected by screws in sequence through screw holes on the horizontal air-knife cover plate and the horizontal air-knife fixing plate groove.

[0008] Preferably, the horizontal air knife cover plate is clamped in the half I-shaped horizontal air knife fixed plate groove when the horizontal air knife cover plate and the horizontal air knife fixed plate groove are fixedly connected.

[0009] Preferably, a plurality of screw holes are arranged on the side surface of the circular air knife, the side surface of the circular air knife is attached to the inwardly recessed arc surface of the circular air knife fixed plate, the side surface of the circular air knife fixed plate is provided with a waist-shaped fixing hole, and the side surface of the circular air knife is fixedly connected with the circular air knife fixed plate through screws sequentially penetrating through the waist-shaped fixing hole and the screw holes on the side surface of the circular air knife.

[0010] Preferably, the plurality of screw holes facilitate selection of appropriate screw holes according to actual use requirements, so that the circular air knife is fixed at an appropriate position, thereby adjusting the angle of the air outlet of the circular air knife.

[0011] Preferably, the bottom plate and the bottom of the circular air knife are fixedly connected through screws sequentially penetrating through the screw holes on the bottom plate and the bottom of the circular air knife.

[0012] Preferably, the air cavity opening is a waist-shaped air cavity opening and is arranged along the axial direction of the circular air knife.

[0013] Preferably, the second air inlets are two and are arranged on the end surface of the circular air knife, when one of the second air inlets is used for air inlet, the other second air inlet is fixedly sealed and blocked by screws with gaskets, and the two second air inlets are freely switched according to actual operation conditions.

[0014] Preferably, the bottom plate groove is provided with a notch outwardly, so that the air outlet of the circular air knife is formed between the outer side edge of the bottom of the circular air knife and the bottom plate groove.

[0015] The utility model discloses a reasonable structure and novel design, and the horizontal air knife cover plate and the circular air knife are directly fixed on the mounting plate body through screws, so that the whole multi-air knife protection and purging device has the characteristics of small size, light weight and convenient installation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2The utility model discloses a three-dimensional structure schematic diagram of another view;

[0018] Figure 3 The utility model discloses a left view structure schematic diagram;

[0019] Figure 4 The utility model discloses a structure schematic diagram of wind knife mounting plate body in the utility model;

[0020] Figure 5 The utility model discloses a structure schematic diagram of horizontal wind knife cover plate in the utility model;

[0021] Figure 6 The utility model discloses a structure schematic diagram of circular wind knife in the utility model;

[0022] Figure 7 The utility model discloses a structure schematic diagram of circular wind knife in the utility model when using;

[0023] Figure 8 The utility model discloses a structure schematic diagram of bottom plate in the utility model;

[0024] Figure 9 The utility model discloses an example drawing when using.

[0025] Among them: 1, wind knife mounting plate body, 2, horizontal wind knife fixed plate groove, 2-1, convex edge, 3, horizontal wind knife cover plate, 3-1, concave edge, 4, first air inlet, 5, first wind cavity, 6, horizontal wind knife gas outlet, 6-1, horizontal wind knife gas curtain, 7, circular wind knife fixed plate, 8, circular wind knife, 9, bottom plate, 10, second air inlet, 11, second wind cavity, 12, bottom plate groove, 12-1, notch, 13, wind cavity mouth, 14, circular wind knife gas outlet, 14-1, circular wind knife gas curtain, 15, screw, 16, screw hole, 17, waist shape fixed hole, 18, fixed hole, 19, splash movement path, 20, air inlet connecting piece. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects that the utility model discloses adopt to realize the predetermined utility model purposes, the following in combination with the preferred embodiments, the specific implementation, structure, characteristics and effects of the utility model are explained in detail as follows.

[0027] As Figures 1-8As shown, a multi-air knife protection and blowing device includes an air knife mounting plate body 1, a horizontal air knife, and a circular air knife. The horizontal air knife includes a horizontal air knife fixing plate groove 2 on the air knife mounting plate body 1, a horizontal air knife cover plate 3 connected with the horizontal air knife fixing plate groove 2, a first air inlet 4 and a first air cavity 5 arranged on the horizontal air knife fixing plate groove 2, and a horizontal air knife air outlet 6 formed between a convex edge 2-1 of the horizontal air knife fixing plate groove 2 and a concave edge 3-1 of the horizontal air knife cover plate 3. The circular air knife includes a circular air knife fixing plate 7 on the air knife mounting plate body 1, a circular air knife 8 connected with the circular air knife fixing plate 7, and a bottom plate 9 connected with the circular air knife 8. The circular air knife 8 is provided with a second air inlet 10 on an end face thereof, and is provided with a second air cavity 11 inside. The circular air knife 8 is provided with an air cavity opening 13 at a bottom portion thereof, which is in communication with a bottom plate groove 12 on the bottom plate 9. A circular air knife air outlet 14 is formed between an outer side edge of the bottom portion of the circular air knife 8 and the bottom plate groove 12.

[0028] As shown in the drawings, Figure 4 In this embodiment, the first air inlet 4 is located on the horizontal air knife fixing plate groove 2 at the middle of the first air cavity 5.

[0029] As shown in the drawings, Figure 1 , Figure 2 , Figure 4 , Figure 5 In this embodiment, the horizontal air knife cover plate 3 and the horizontal air knife fixing plate groove 2 are fixedly connected by screws 15 passing through screw holes 16 on the horizontal air knife cover plate 3 and the horizontal air knife fixing plate groove 2 in sequence.

[0030] As shown in the drawings, Figures 1-4 In this embodiment, when the horizontal air knife cover plate 3 and the horizontal air knife fixing plate groove 2 are fixedly connected, the door-shaped horizontal air knife cover plate 3 is clamped in the half I-shaped horizontal air knife fixing plate groove 2.

[0031] As shown in the drawings, Figures 1-4 In this embodiment, the side surface of the circular air knife 8 is provided with a plurality of groups of screw holes 16. The side surface of the circular air knife 8 is fitted with an inwardly concave arc surface of the circular air knife fixing plate 7. The side surface of the circular air knife 8 and the circular air knife fixing plate 7 are fixedly connected by screws 15 passing through the waist-shaped fixing holes 17 on the side surface of the circular air knife 8 and the side surface of the circular air knife 8 in sequence.

[0032] As shown in the drawings, Figures 1-4 In this embodiment, the plurality of groups of screw holes 16 facilitate selection of appropriate screw holes 16 according to actual use needs, so as to fix the circular air knife 8 at appropriate positions, thereby adjusting the angle of the circular air knife air outlet 14.

[0033] As shown in the drawings, Figure 2As shown, in this embodiment, the bottom plate 9 and the bottom of the circular air knife 8 are fixedly connected by screws 15 passing through the screw holes 16 at the bottom of the bottom plate 9 and the bottom of the circular air knife 8 in sequence.

[0034] like Figure 6 , Figure 7 As shown, in this embodiment, the air cavity opening 13 is a waist-shaped air cavity opening, which is arranged along the axial direction of the circular air knife 8.

[0035] like Figure 6 , Figure 7 As shown, in this embodiment, there are two second air inlets 10, which are respectively set on the end face of the circular air knife 8. When one of the second air inlets 10 is in use, the other second air inlet 10 is fixed and sealed with a screw 15 with a washer, so that the two second air inlets 10 can be freely switched according to the actual operation on site.

[0036] like Figure 1 , Figure 8 As shown, in this embodiment, the bottom plate groove 12 has an outward notch 12-1, thereby forming a circular air knife outlet 14 between the outer side of the bottom of the circular air knife 8 and the bottom plate groove 12.

[0037] Specific usage process: as follows Figure 1 , Figure 2 , Figure 9 As shown, in actual use, the horizontal air knife cover plate 3 and the horizontal air knife fixing plate groove 2 are fixedly connected by screws 15 passing through the screw holes 16 on the horizontal air knife cover plate 3 and the horizontal air knife fixing plate groove 2 in sequence. The U-shaped horizontal air knife cover plate 3 is snapped into the semi-I-shaped horizontal air knife fixing plate groove 2. The first air inlet 4 on the horizontal air knife fixing plate groove 2 is equipped with an air inlet connector 20, which is then connected to the fan (not shown in the figure). The screw holes 16 are selected at appropriate positions according to actual use needs to fix the circular air knife 8. The circular air knife mounting plate 7 is positioned at a suitable location. For ease of operation, one of the second air inlets 10 on the end face of the circular air knife 8 is fitted with an air intake connector 20, which is then connected to a blower (not shown in the figure). The other second air inlet 10 is sealed and fixed with a screw 15 with a washer. The two second air inlets 10 can be freely switched according to the actual operating conditions. The entire device is fixed near the lens light exit point by screws passing through the upper fixing hole 18 of the air knife mounting plate body 1. When the blower (not shown in the figure) is started, the generated airflow enters the first air chamber 5 through the first air inlet 4 and the second air inlet 10 through the second air chamber 11. The airflow in the first air chamber 5 then flows out through the horizontal air knife outlet 6, forming a horizontal air knife air curtain 6-1. The airflow in the second air chamber 11 flows out sequentially through the air chamber opening 13 and the circular air knife outlet 14, forming a circular air knife air curtain 14-1, thus protecting the optical lens and blowing away splashes.

[0038] As Figure 9 one of the splash movement paths 19 shown, it can be seen that due to the existence of the horizontal air knife air curtain 6-1 formed by the horizontal air knife, the splash moving upward to the upper air curtain will be blown away by the high-speed air, thereby achieving the effect of protecting the lens.

[0039] In the structure of the utility model, the horizontal air knife cover plate 3 and the circular air knife 8 are directly fixed on the air knife mounting plate body 1 through the screws 15, so that the whole multi-air knife protection and blowing device has the characteristics of small size, light weight and convenient installation; the multiple sets of screw holes 16 arranged on the circular air knife 8 are convenient for selecting the screw holes 16 at appropriate positions according to actual use needs, fixing the circular air knife 8 at appropriate positions, thereby adjusting the angle of the circular air knife air outlet 14 and realizing the large-angle adjustment of the blowing air curtain; the cooperation of the horizontal air knife air curtain 6-1 formed by the horizontal air knife air outlet 6 and the circular air knife air curtain 14-1 formed by the circular air knife air outlet 14 makes the utility model not only protect the lens, but also blow away the splashes and residues during laser processing, thereby forming a stable protection air path.

[0040] In conclusion, the utility model achieves the expected effect.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with a preferred embodiment, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes do not deviate from the technical scheme of the utility model. Any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the scope of the technical scheme of the utility model.

Claims

1. A multi-air-knife protection and purge apparatus, characterized by: The utility model provides a wind blade installation plate body, horizontal wind blade, circular wind blade, the horizontal wind blade includes horizontal wind blade fixed plate groove on the wind blade installation plate body, horizontal wind blade cover plate connected with horizontal wind blade fixed plate groove, first air inlet and first air cavity are provided on horizontal wind blade fixed plate groove, the convex edge of horizontal wind blade fixed plate groove and the concave edge of horizontal wind blade cover plate form horizontal wind blade air outlet, the circular wind blade includes circular wind blade fixed plate on the wind blade installation plate body, circular wind blade connected with circular wind blade fixed plate and bottom plate connected with circular wind blade, and the second air inlet is arranged on the end surface of circular wind blade, and the second air cavity is arranged in circular wind blade, and the air cavity mouth that communicates with the bottom plate groove on the bottom plate is arranged on the bottom of circular wind blade, and the circular wind blade air outlet is formed between the bottom outer side of circular wind blade and bottom plate groove.

2. A multi-air-knife protection and blow-off apparatus as claimed in claim 1, characterized in that: The first air inlet is located on the horizontal wind blade fixed plate groove at the middle of the first air cavity.

3. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The horizontal wind blade cover plate and the horizontal wind blade fixed plate groove are fixedly connected by screws.

4. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: When the horizontal wind blade cover plate and the horizontal wind blade fixed plate groove are fixedly connected, the door-shaped horizontal wind blade cover plate is clamped in the half I-shaped horizontal wind blade fixed plate groove.

5. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The side of the circular wind blade is provided with a plurality of screw holes, the side of the circular wind blade is attached to the inwardly concave arc surface of the circular wind blade fixed plate, the side of the circular wind blade is fixedly connected to the circular wind blade fixed plate by screws through the waist-shaped fixing hole and the screw hole on the side of the circular wind blade.

6. A multi-air-knife protection and blow-off apparatus as claimed in claim 5, characterized in that: The plurality of screw holes facilitate selection of appropriate screw holes according to actual use needs, fixing the circular wind blade at appropriate positions, and adjusting the angle of the circular wind blade air outlet.

7. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The bottom plate and the bottom of the circular wind blade are fixedly connected by screws through the screw holes on the bottom plate and the bottom of the circular wind blade.

8. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The air cavity mouth is a waist-shaped air cavity mouth and is arranged along the axis of the circular wind blade.

9. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The second air inlets are two and are arranged on the end surface of the circular wind blade, when one of the second air inlets is used for air inlet, the other second air inlet is fixedly sealed and blocked by a screw with a gasket, and the two second air inlets can be freely switched according to actual operation conditions.

10. The multi-air-knife protection and blow-off apparatus as claimed in claim 1, wherein: The bottom plate groove is provided with a notch outward, thereby forming the circular wind blade air outlet between the bottom outer side of the circular wind blade and the bottom plate groove.