An air blowing and light-blocking protection device for laser cutting

Abstract

This utility model provides an air blowing and light blocking protection device for laser cutting, belonging to the technical field of laser cutting equipment. It includes: a base with a clamping mechanism; a rotating seat rotatably connected to the base, the angular position of which is determined by a rotation drive mechanism; a light blocking protection mechanism including at least one light-blocking plate fixedly connected to the rotating seat; and an air blowing protection mechanism including at least one air knife fixedly connected to either the light-blocking plate or the rotating seat. The advantages of this utility model are: this device is specifically designed for air blowing and light blocking protection of thin-walled rotating parts during laser processing, meeting the comprehensive protection requirements against high-temperature and strong light when processing the frame, large circular holes, and inner circles of thin-walled rotating parts, thus improving processing quality and efficiency and ensuring the safety of operators and equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of laser cutting equipment, and relates to an air blowing and light blocking protection device for laser cutting. Background Technology

[0002] Laser cutting utilizes a laser beam emitted from a laser source, which is focused into a high-power-density beam by an optical system. When the laser beam irradiates the workpiece surface, it causes the material to rapidly reach its melting or boiling point, while simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position between the laser beam and the workpiece moves, a continuous kerf is gradually formed in the material, thus achieving precise cutting.

[0003] When performing laser processing on the frame, large circular holes on the end face, and inner circles of thin-walled rotating parts, a series of technical challenges arise due to the unique structure of these workpieces. First, the high temperatures generated by laser cutting can cause localized overheating of the thin-walled part, leading to thermal deformation and affecting processing accuracy and finished product quality. Second, molten slag, sparks, and other residues generated during cutting can easily adhere to the processing area, interfering with the cutting process and potentially damaging the workpiece surface. Third, the intense light emitted by the laser poses a safety hazard, potentially damaging the operator's eyesight and surrounding equipment.

[0004] Currently, some protective devices are already being used in the field of laser cutting. For example, a Chinese utility model patent with application number 202320015320.9 is entitled "A Light-Shielding Cover for a Laser Cutting Head," which can provide a certain degree of light shielding during the cutting process; in addition, a Chinese utility model patent with application number 201821124884.1 is entitled "An Air Blowing Device for Laser Cutting Equipment," which can blow air onto the cutting focal point.

[0005] However, both devices have certain functional limitations. Neither can effectively protect against high temperatures and strong light at the same time, and their structural design is difficult to adapt to the air blowing and light blocking requirements of thin-walled rotating parts during laser processing. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an air blowing and light blocking protection device for laser cutting.

[0007] The objective of this utility model can be achieved through the following technical solution: a blowing and light-blocking protection device for laser cutting, comprising:

[0008] A base, wherein the base is provided with a clamping mechanism;

[0009] A rotating seat, rotatably connected to the base, wherein the angular position of the rotating seat on the base is determined by a rotation drive mechanism;

[0010] A light-blocking protection mechanism, comprising at least one light-blocking plate, the light-blocking plate being fixedly connected to the rotating base;

[0011] An air-blowing protection mechanism, comprising at least one air knife, wherein the air knife is fixedly connected to the light-blocking plate or the rotating seat.

[0012] Preferably, the rotary drive mechanism includes a motor, a gear, and a gear ring. The motor is fixedly connected to the rotary seat, the gear ring is fixedly connected to the base, and the gear ring is concentrically arranged with the rotation axis of the rotary seat. The gear is connected to the output shaft of the motor and meshes with the gear ring.

[0013] Preferably, the light-blocking protection mechanism includes a side light-blocking plate and an upper light-blocking plate, wherein the side light-blocking plate is vertically disposed on the rotating base, and the upper light-blocking plate is inclined or horizontally disposed on the rotating base.

[0014] Preferably, the side light-blocking plate and the upper light-blocking plate are located at both ends of the rotating base.

[0015] Preferably, the number of air knives is at least five, and each air knife is divided into two groups. One group of air knives has at least four air knives and is located around the side light-blocking plate, while the other group of air knives is close to the upper light-blocking plate.

[0016] Preferably, it also includes a waste ejection mechanism, which includes a cylinder and an ejection block. The cylinder body is fixedly connected to the side light-blocking plate or the rotating seat, and the ejection block is connected to the piston rod of the cylinder.

[0017] Preferably, the rotating seat and the base are connected by a bearing.

[0018] Preferably, the base is configured as a disc-shaped structure.

[0019] Preferably, the clamping mechanism includes at least two quick clamps mounted on the base.

[0020] Preferably, the base is provided with a radially sliding slider, the number of which is the same as the number of quick clamps and they are arranged in a one-to-one correspondence. The quick clamps are fixedly connected to the sliders, so that the quick clamps are slidably connected to the base through the sliders.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This device is specifically designed for air blowing and light blocking protection during the laser processing of thin-walled rotating parts. It can meet the comprehensive protection requirements of high temperature and strong light when laser processing parts such as the mouth frame, large circular hole on the end face, and inner circle of the end face of thin-walled rotating parts, thereby improving processing quality and efficiency and ensuring the safety of operators and equipment.

[0023] 2. The waste ejection mechanism is a key component used to clean up residual waste from the cut area after laser cutting, ensuring high processing efficiency and product quality.

[0024] 3. This device is an integrated protection platform that can be installed inside a rotating thin-walled workpiece and rotate synchronously with the laser cutting point. It provides powerful cooling and slag removal through an air knife assembly surrounding the cutting point, shields harmful laser beams with multi-angle light-blocking plates, and provides an automatic waste cleaning function, significantly improving the quality, efficiency, and safety level of laser processing for this type of workpiece. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the air blowing and light blocking protection device of this utility model.

[0026] Figure 2 This is a structural schematic diagram of the air blowing and light blocking protection device of this utility model from another perspective.

[0027] Figure 3 This is a schematic diagram showing the connection relationship between the rotating base, the light-blocking protection mechanism, and the air-blowing protection mechanism of this utility model.

[0028] Figure 4 This is a schematic diagram of the rotating base of this utility model.

[0029] Figure 5 This is a schematic diagram of the air blowing and light blocking protection device of this utility model installed inside the thin-walled component of the rotating body.

[0030] Figure 6 This is a schematic diagram showing the connection relationship between the air blowing and light blocking protection device and the rotating thin-walled component of this utility model.

[0031] Figure 7 This is a schematic diagram of the structure of a thin-walled rotating body.

[0032] In the diagram, 100 is the base; 110 is the slider; 200 is the rotating seat; 300 is the air knife; 410 is the side light-blocking plate; 420 is the upper light-blocking plate; 500 is the cylinder; 510 is the ejector block; 600 is the motor; 610 is the gear; 700 is the quick clamp; 800 is the thin-walled rotating part; 810 is the mouth frame; 820 is the large round hole on the end face; and 830 is the inner circle. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figures 1 to 7 As shown, a blowing and light-blocking protection device for laser cutting includes:

[0035] The base 100 is equipped with a clamping mechanism;

[0036] The rotating seat 200 is rotatably connected to the base 100, and the angular position of the rotating seat 200 on the base 100 is determined by a rotary drive mechanism.

[0037] A light-blocking protection mechanism, comprising at least one light-blocking plate, which is fixedly connected to the rotating base 200;

[0038] The air blowing protection mechanism includes at least one air knife 300, which is fixedly connected to a light shield or a rotating seat 200.

[0039] The base 100 is the foundation of the entire device. The clamping mechanism is used to fix the rotating thin-walled part 800 to be processed, ensuring that the base 100 is fixed to the workpiece during laser cutting. The rotating seat 200 is the part that can rotate relative to the base 100, and its angular position is controlled by a rotary drive mechanism. The rotary drive mechanism can use a motor 600 with gear 610 transmission, worm gear transmission, etc., to achieve precise control of the rotation speed and angle of the rotating seat 200. The design of the rotating seat 200 allows the workpiece to be cut and protected along a predetermined path, adapting to the processing needs of different parts. The light shield is used to block areas that may be exposed to strong light during laser cutting, protecting the operator's eyes and surrounding equipment from the harmful effects of the laser beam.

[0040] The air knife 300 is a high-efficiency air jet device, commonly used in industrial production for operations such as purging, cooling, and drying. It achieves the effect of cleaning, cooling, or drying object surfaces by ejecting compressed air or other gases at high speed and a specific angle from narrow gaps, forming an "air curtain" or "air blade".

[0041] The air knife 300 is connected to a high-pressure gas source (usually compressed air) and guided to a narrow outlet slit through an internal channel. The gas is ejected at high speed through the narrow slit of the air knife 300, creating a powerful and concentrated airflow. This design allows the airflow to precisely target areas requiring cooling or cleaning. During laser cutting, the high-pressure airflow from the air knife 300 can be directly aimed at the cutting point, rapidly removing heat and reducing workpiece deformation caused by high temperatures. Furthermore, the powerful airflow effectively removes slag and sparks generated during cutting, keeping the cutting area clean.

[0042] It should be noted that this device uses an air-blowing protection mechanism to cool and remove slag from the laser-cut area, effectively reducing the risk of deformation of the thin-walled rotating part 800 during processing. This not only improves processing accuracy but also ensures product quality. Furthermore, the light-blocking protection mechanism effectively blocks the intense laser light, protecting the operator's eyes and surrounding equipment from laser damage, thus increasing the safety of the laser processing process.

[0043] It is important to note that the rotating base 200 of this device can drive the air blowing protection mechanism and the light blocking protection mechanism to rotate relative to the rotating thin-walled part 800, thereby achieving a dynamic protection effect. This ensures that the operators and equipment are always within the safe protection range during laser processing, and that the air blowing protection mechanism and the light blocking protection mechanism do not affect the rotation processing of the rotating thin-walled part 800, thus achieving a dynamic balance between protection and processing.

[0044] This device is specifically designed for air blowing and light blocking protection of the rotating thin-walled part 800 during laser processing. It can meet the comprehensive protection requirements of high temperature and strong light when laser processing parts such as the mouth frame 810, the large circular hole 820 on the end face, and the inner circle 830 on the end face of the rotating thin-walled part 800, thereby improving processing quality and efficiency and ensuring the safety of operators and equipment.

[0045] like Figures 1 to 4 As shown, based on the above embodiment, the rotary drive mechanism includes a motor 600, a gear 610, and a gear ring. The motor 600 is fixedly connected to the rotary seat 200, the gear ring is fixedly connected to the base 100, and the gear ring and the rotation axis of the rotary seat 200 are concentrically arranged. The gear 610 is connected to the output shaft of the motor 600, and the gear 610 meshes with the gear ring.

[0046] When motor 600 starts, its output shaft rotates, which in turn drives the connected gear 610 to rotate. Since gear 610 meshes with the gear ring, the rotational motion of gear 610 is converted into a force that moves the rotating seat 200 along the circumference of the gear ring. Motor 600 can precisely adjust the rotational speed and angle of the rotating seat 200 by controlling its rotational speed and direction. This design allows the rotating seat 200 to rotate smoothly on the base 100, thus enabling the protective device to perform machining protection on the workpiece according to a predetermined path.

[0047] like Figures 1 to 7 As shown, based on the above embodiments, the light-blocking protection mechanism includes a side light-blocking plate 410 and an upper light-blocking plate 420. The side light-blocking plate 410 is vertically arranged on the rotating base 200, and the upper light-blocking plate 420 is inclined or horizontally arranged on the rotating base 200.

[0048] The light-blocking protection mechanism plays a crucial role in the laser cutting process, protecting the operator's eyes and surrounding equipment from harm by blocking the intense light generated by the laser cutting.

[0049] The side light-blocking plate 410 is vertically mounted on the rotating base 200. This vertical arrangement effectively blocks laser beams or reflected light coming from the side. The vertically arranged side light-blocking plate 410 is particularly suitable for protecting the side areas of the thin-walled rotating body 800, such as the mouth frame 810.

[0050] The design of the upper light shield 420 takes into account the various light directions that may exist during the laser cutting process (such as upward or oblique upward), especially when dealing with the large round hole 820 on the end face and the inner circle 830 on the end face, it can ensure all-round strong light protection.

[0051] In this example, the side light-blocking plate 410 and the upper light-blocking plate 420 are located at both ends of the rotating base 200, respectively.

[0052] like Figures 1 to 3 , Figure 6 As shown, based on the above embodiment, the number of air blades 300 is at least five, and each air blade 300 is divided into two groups. One group of air blades 300 has at least four air blades and is located around the side light-blocking plate 410, while the other group of air blades 300 is close to the upper light-blocking plate 420.

[0053] A set of air knives 300 consists of at least four, positioned around the perimeter of the side baffle plate 410. This arrangement ensures uniform and powerful gas jets from multiple directions, effectively covering the entire cutting area. By placing the air knives 300 around the side baffle plate 410, molten slag and sparks generated during the cutting process can be removed in real time, reducing the impact of these wastes on the cutting process and also lowering the risk of deformation of thin-walled parts due to high temperatures.

[0054] Another set of air knives 300 is installed close to the upper baffle plate 420. This set of air knives 300 is designed primarily to allow for direct airflow cooling and slag removal when cutting large circular holes 820 and inner circles 830 on the end face, or other top or obliquely upward positions. The air knives 300 positioned close to the upper baffle plate 420 can promptly remove waste generated at the top during the cutting process, ensuring an unobstructed cutting path and preventing waste from falling into the workpiece or other hard-to-clean areas.

[0055] By rationally arranging the position and number of air knives 300, sufficient cooling and waste removal can be achieved when performing laser cutting operations on the side or top of the rotating thin-walled part 800, thereby achieving more precise and efficient processing results.

[0056] like Figure 1 , Figure 2 As shown, based on the above embodiment, it also includes a waste ejection mechanism. The waste ejection mechanism includes a cylinder 500 and an ejection block 510. The cylinder body of the cylinder 500 is fixedly connected to the side light-blocking plate 410 or the rotating seat 200, and the ejection block 510 is connected to the piston rod of the cylinder 500.

[0057] The waste ejection mechanism is a key component for cleaning residual waste from the cut area after laser cutting, ensuring high processing efficiency and product quality. After laser cutting, the control system triggers the cylinder 500. At this time, the piston rod of the cylinder 500 extends outward, pushing the connected ejector block 510 forward. The ejector block 510, according to its design shape and size, accurately enters the cut area. Because the front end of the ejector block 510 is typically designed to fit the shape of the area to be cleaned, it can effectively contact and push away the waste left during the cutting process.

[0058] Compared to traditional manual cleaning methods, automated waste ejection mechanisms can complete waste removal tasks more quickly and thoroughly, significantly improving production efficiency. The design of ejection block 510 takes into account the needs of specific processing areas, ensuring accurate removal of waste every time and reducing potential damage to the workpiece surface.

[0059] like Figure 1 , Figure 2As shown, based on the above embodiment, the rotating seat 200 and the base 100 are connected by a bearing.

[0060] Based on the above implementation method, the base 100 is configured as a disc-shaped structure.

[0061] like Figures 1 to 7 As shown, based on the above embodiment, the clamping mechanism includes at least two quick clamps 700, which are mounted on the base 100.

[0062] Based on the above embodiments, the base 100 is provided with a radially sliding slider 110. The number of sliders 110 is the same as the number of quick clamps 700 and they are arranged in a one-to-one correspondence. The quick clamps 700 are fixedly connected to the sliders 110, so that the quick clamps 700 are slidably connected to the base 100 through the sliders 110.

[0063] The base 100 can be detachably connected to the rotating thin-walled component 800 via multiple quick clamps 700. In the actual structure, the rotating thin-walled component 800 is similar to a cylindrical or tubular structure. The entire device is placed inside the rotating thin-walled component 800, and each quick clamp 700 on the base 100 is fixed together with the inner flange of the rotating thin-walled component 800, thereby fixing the base 100 to the rotating thin-walled component 800. The light-blocking protection mechanism, the air-blowing protection mechanism, and the waste ejection mechanism can rotate with the rotating seat inside the rotating thin-walled component 800, providing real-time and dynamic protection for laser cutting of the rotating thin-walled component 800 (especially the mouth frame 810, the large circular hole 820 on the end face, the inner circle 830 on the end face, etc.).

[0064] Through the above design, this device is an integrated protection platform that can be installed inside a rotating thin-walled workpiece and rotate synchronously with the laser cutting point. It provides powerful cooling and slag removal through 300 sets of air knives around the cutting point, shields harmful lasers with multi-angle light-blocking plates, and provides an automatic waste cleaning function, significantly improving the quality, efficiency, and safety level of laser processing of this type of workpiece.

[0065] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0066] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A gas blowing and light blocking protection device for laser cutting, characterized in that, include: A base (100) is provided with a clamping mechanism; A rotating seat (200) is rotatably connected to the base (100), and the angular position of the rotating seat (200) on the base (100) is determined by a rotation drive mechanism; A light-blocking protection mechanism, comprising at least one light-blocking plate, the light-blocking plate being fixedly connected to the rotating base (200); The air blowing protection mechanism includes at least one air knife (300), which is fixedly connected to the light-blocking plate or the rotating seat (200).

2. A gas blowing and light blocking protection device for laser cutting according to claim 1, characterized in that: The rotary drive mechanism includes a motor (600), a gear (610), and a gear ring. The motor (600) is fixedly connected to the rotating base (200), the gear ring is fixedly connected to the base (100), and the gear ring is concentrically arranged with the rotation axis of the rotating base (200). The gear (610) is connected to the output shaft of the motor (600), and the gear (610) meshes with the gear ring.

3. A gas blowing and light blocking protection device for laser cutting according to claim 1, characterized in that: The light-blocking protection mechanism includes a side light-blocking plate (410) and an upper light-blocking plate (420). The side light-blocking plate (410) is vertically arranged on the rotating base (200), and the upper light-blocking plate (420) is inclined or horizontally arranged on the rotating base (200).

4. A gas blowing and light blocking protection device for laser cutting according to claim 3, characterized in that: The side light-blocking plate (410) and the upper light-blocking plate (420) are located at both ends of the rotating base (200).

5. A gas blowing and light blocking protection device for laser cutting according to claim 3, characterized in that: The number of air blades (300) is at least five, and each air blade (300) is divided into two groups. One group of air blades (300) has at least four air blades and is located around the side light-blocking plate (410). The other group of air blades (300) is close to the upper light-blocking plate (420).

6. A gas blowing and light blocking protection device for laser cutting according to claim 1, characterized in that: It also includes a waste ejection mechanism, which includes a cylinder (500) and an ejection block (510). The cylinder body of the cylinder (500) is fixedly connected to the side light shield (410) or the rotating seat (200), and the ejection block (510) is connected to the piston rod of the cylinder (500).

7. A gas and light blocking shield for laser cutting as defined in claim 1, wherein: The rotating seat (200) and the base (100) are connected by a bearing.

8. A gas and light blocking shield for laser cutting as defined in claim 1, wherein: The base (100) is configured as a disc-shaped structure.

9. A gas blowing and light blocking protection device for laser cutting according to claim 1 or 8, characterized in that: The clamping mechanism includes at least two quick clamps (700) mounted on the base (100).

10. A gas blowing and light blocking protection device for laser cutting according to claim 9, characterized in that: The base (100) is provided with a radially sliding slider (110). The number of sliders (110) is the same as the number of quick clamps (700) and they are arranged in a one-to-one correspondence. The quick clamps (700) are fixedly connected to the sliders (110), so that the quick clamps (700) are slidably connected to the base (100) through the sliders (110).

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