Laser spot shaping device

Abstract

The utility model relates to the technical field of laser spot shaping, in particular to a laser spot shaping device which comprises a connecting sleeve, anti-skid lines are evenly arranged on the outer side face of the connecting sleeve, and internal threads are arranged at the upper end in the connecting sleeve. The fixing ring is mounted in the middle of the connecting sleeve; the light-transmitting frame is of a circular structure, the upper end face of the light-transmitting frame is an arc-shaped face inclining inwards, and a light-transmitting hole is formed in the middle of the light-transmitting frame and is of a conical structure. The shaping assembly is installed at the lower end of the fixing ring, the middle of the shaping assembly communicates with the lower end of the light hole, the laser is incident on the shaping assembly through the light hole, and the shaping assembly is used for shaping and adjusting the spot size and shape of the incident laser; the laser welding device can meet different welding requirements, meanwhile, the light transmitting frame can eliminate unstable factors such as stray light and scattered light generated in the laser transmitter, output of the laser transmitter is optimized, and stability and output work of the laser transmitter are improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser spot shaping, and in particular to a laser spot shaping device. Background Art

[0002] In the field of laser processing, the diverse range of workpiece processing techniques requires different spot shapes. However, lasers typically only output circular spots, which cannot meet all process requirements. Therefore, spot shaping technology is needed to convert circular spots into square or other desired shapes to meet the specific requirements of different processing processes.

[0003] The Chinese patent with announcement number CN211375199U, named "Laser Spot Shaping Device", specifically transforms the input circular spot into a square spot output through spot shaping, so that the output spot of the laser can switch between circular spot and square spot to meet different process requirements; it realizes the output conversion between circular spot and square spot, and has the characteristics of simple structure, easy manufacturing and assembly, and convenient maintenance.

[0004] When the above-mentioned prior art is in use, it also moves the optical element to enable the laser to pass through the square hole to achieve the function of changing the shape of the light spot. However, when the above-mentioned prior art is in use, it can only change the shape of the light spot, and cannot adjust the size of the light spot of different shapes according to the needs of use, and cannot meet different welding requirements. Based on this, there is still room for improvement on the basis of the existing laser spot shaping equipment. Utility Model Content

[0005] In order to accurately adjust the size and shape of the laser spot, the present application provides a laser spot shaping device.

[0006] The laser spot shaping device provided in this application adopts the following technical solution:

[0007] A laser spot shaping device includes a connecting sleeve, which is a hollow circular structure, with anti-slip grooves evenly arranged on the outer surface of the connecting sleeve and an internal thread arranged on the upper end of the inner part of the connecting sleeve; a fixed ring, which is installed in the middle of the connecting sleeve; a light-transmitting frame, which is installed in the middle of the fixing ring, the light-transmitting frame is a circular structure, the upper end surface of the light-transmitting frame is an inwardly inclined arc surface, and a light-transmitting hole is arranged in the middle of the light-transmitting frame, and the light-transmitting hole is a conical structure; a shaping component, which is installed at the lower end of the fixing ring, the middle of the shaping component is connected to the lower end of the light-transmitting hole, the laser is incident on the shaping component through the light-transmitting hole, and the shaping component is used to shape and adjust the size and shape of the incident laser spot.

[0008] Furthermore, the upper surface of the light-transmitting frame is made of a high-temperature resistant material, and heat dissipation grooves are evenly arranged along the circumference of the upper surface of the light-transmitting frame.

[0009] Furthermore, the shaping assembly includes an annular frame, a rotating frame, an aperture unit, a top plate and a driving unit, the annular frame is installed at the lower end of the fixed ring, the upper end surface of the annular frame is provided with a first annular groove and a second annular groove, the rotating frame is installed on the first annular groove through a bearing, the rotating frame is in a circular ring structure, a regular polygonal groove is provided in the middle of the rotating frame, placement grooves are evenly provided on the upper end of the rotating frame, through holes connected to the placement grooves are evenly provided on the outer side of the rotating frame, the aperture unit is slidingly provided in the through hole, the outer side of the aperture unit is retracted inside the placement groove, the outer side of the aperture unit is located inside the second annular groove, a top plate is installed inside the second annular groove, the top plate cooperates with the outer side of the aperture unit, and the driving unit is installed at the lower end of the annular frame, the driving unit is used to drive the rotating frame to rotate.

[0010] Furthermore, the aperture unit includes a push rod, a telescopic spring and an aperture plate. A push rod is slidably arranged in the through hole. The outer end of the push rod is a smooth arc surface. A telescopic spring is arranged on the push rod. An aperture plate is installed at the inner end of the push rod. An aperture hole is arranged on the aperture plate. The aperture plate cooperates with the placement groove.

[0011] Furthermore, the sizes and shapes of the aperture holes on the aperture plates inside the rotating frame are different.

[0012] Furthermore, the top plate has a conical structure, and the length of the top plate is equal to the distance between the aperture plate and the center position of the rotating frame.

[0013] Furthermore, a concave groove is provided on the outer contour of the top plate, the outer end of the top rod is slidably arranged inside the concave groove, and a positioning groove cooperating with the outer end of the top rod is provided in the middle of the concave groove.

[0014] Furthermore, the driving unit includes a driving gear and a ring gear. A connecting groove is provided at the lower end of the ring frame. A driving gear is installed inside the connecting groove through a bearing. The driving gear is connected to the output shaft of the motor. A ring gear is installed at the lower end of the rotating frame, and the ring gear is meshed with the driving gear.

[0015] Furthermore, a positioning frame is installed at the lower end of the light-transmitting frame. The positioning frame is an arc-shaped structure, and a positioning groove that cooperates with the aperture plate is provided on the inner side surface of the positioning frame.

[0016] Furthermore, a flexible pad is symmetrically installed inside the positioning groove, and the flexible pad has a triangular structure.

[0017] In the above technical scheme, the utility model provides a laser spot shaping device. The driving unit in the utility model can drive the rotating frame to rotate, and the rotating frame can drive the top rod and the aperture plate to move synchronously. According to the use requirements, the aperture plate to be used is rotated to the position corresponding to the top plate, and the top plate drives the aperture plate to extend inward through the top rod. Since the length of the top plate is equal to the distance from the aperture plate moving from the placement slot to the center position of the rotating frame, the aperture plate just reaches the center position of the rotating frame. The positioning frame can limit the aperture plate to ensure that the aperture hole on the aperture plate can correspond to the light-transmitting hole, and the aperture hole on the aperture plate can correspond to the light-transmitting hole on the light-transmitting frame, so that the incident laser can be emitted outward from the aperture hole. By changing the size and shape of the aperture hole on the aperture plate, the laser can be shaped to adapt to different welding requirements. At the same time, the light-transmitting frame can eliminate unstable factors generated in the laser emitter, such as stray light, scattered light, etc., optimize the output of the laser emitter, and improve the stability and output power of the laser emitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the cutaway structure of the present utility model.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure among the connecting sleeve, the fixing ring and the shaping component of the utility model.

[0022] Figure 4 It is a bottom view of the present utility model.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure between the fixing ring and the shaping component of the utility model.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure among the positioning frame, the top rod and the aperture plate of the utility model.

[0025] Explanation of the accompanying drawings: 1. Connecting sleeve; 2. Fixing ring; 3. Light-transmitting frame; 31. Positioning frame; 32. Flexible pad; 4. Shaping assembly; 41. Ring frame; 42. Rotating frame; 43. Aperture unit; 431. Push rod; 432. Telescopic spring; 433. Aperture plate; 44. Top plate; 45. Driving unit; 451. Driving gear; 452. Ring gear. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1-6 A laser spot shaping device provided in an embodiment of the present invention includes a connecting sleeve 1, which is a hollow circular structure, and the outer surface of the connecting sleeve 1 is evenly provided with anti-slip grooves, and the upper end of the inner part of the connecting sleeve 1 is provided with an internal thread; and a fixing ring 2, which is installed in the middle of the connecting sleeve 1; a light-transmitting frame 3, which is installed in the middle of the fixing ring 2, and the light-transmitting frame 3 is a circular structure. The upper end surface of the light-transmitting frame 3 is an inwardly inclined arc surface, and a light-transmitting hole is provided in the middle of the light-transmitting frame 3, and the light-transmitting hole is in a conical structure; a shaping component 4 is installed at the lower end of the fixing ring 2, and the middle part of the shaping component 4 is connected with the lower end of the light-transmitting hole. The laser is incident on the shaping component 4 through the light-transmitting hole, and the shaping component 4 is used to shape and adjust the spot size and shape of the incident laser.

[0028] In the above technical solution, the laser emitter is installed at the upper end of the connecting sleeve 1, and the laser is incident on the shaping component 4 through the light-transmitting hole on the light-transmitting frame 3. The shaping component 4 is used to shape and adjust the spot size and shape of the incident laser, so that the laser can adapt to different welding requirements. At the same time, it can eliminate unstable factors generated in the laser emitter, such as stray light, scattered light, etc., optimize the output of the laser emitter, and improve the stability and output power of the laser emitter.

[0029] See Figure 5 As shown, as a preferred technical solution of this embodiment, the upper surface of the light-transmitting frame 3 is made of high-temperature resistant material, and the upper surface of the light-transmitting frame 3 is evenly provided with heat dissipation grooves along its circumference.

[0030] In the above technical solution, the stray light and scattered light generated by the laser emitter can be irradiated on the upper surface of the light-transmitting frame 3. The light-transmitting frame 3 made of high-temperature resistant material can avoid deformation caused by long-term heat exposure, and the heat dissipation groove can further improve the heat dissipation effect.

[0031] See Figure 3-Figure 5As shown, as a preferred technical solution of this embodiment, the shaping component 4 includes an annular frame 41, a rotating frame 42, an aperture unit 43, a top plate 44 and a driving unit 45. The annular frame 41 is installed at the lower end of the fixed ring 2. The upper end surface of the annular frame 41 is provided with a first annular groove and a second annular groove. The rotating frame 42 is installed on the first annular groove through a bearing. The rotating frame 42 is a circular ring structure. A regular polygonal groove is provided in the middle of the rotating frame 42. Placement grooves are evenly provided on the upper end of the rotating frame 42. Through holes connected to the placement grooves are evenly provided on the outer side of the rotating frame 42. The aperture unit 43 is slidably provided in the through hole. The outer side of the aperture unit 43 is retracted inside the placement groove. The outer side of the aperture unit 43 is located inside the second annular groove. A top plate 44 is installed inside the second annular groove. The top plate 44 cooperates with the outer side of the aperture unit 43. The driving unit 45 is installed at the lower end of the annular frame 41. The driving unit 45 is used to drive the rotating frame 42 to rotate.

[0032] See Figure 5 As shown, as the preferred technical solution of this embodiment, the aperture unit 43 includes a top rod 431, a telescopic spring 432 and an aperture plate 433, and the top rod 431 is slidably arranged in the through hole, the outer end of the top rod 431 is a smooth arc surface, the telescopic spring 432 is arranged on the top rod 431, the aperture plate 433 is installed on the inner end of the top rod 431, the aperture plate 433 is provided with an aperture hole, and the aperture plate 433 cooperates with the placement groove.

[0033] See Figure 5 As shown, as a preferred technical solution of this embodiment, the sizes and shapes of the aperture holes on the aperture plate 433 inside the rotating frame 42 are different, and the shape of the aperture holes on the aperture plate 433 is a circular, square or polygonal structure.

[0034] Continue reading Figure 5 As shown, as a preferred technical solution of this embodiment, the top plate 44 has a conical structure, and the length of the top plate 44 is equal to the distance between the aperture plate 433 and the center position of the rotating frame 42 when the aperture plate 433 moves from the placement groove.

[0035] In the above technical solution, the driving unit 45 can drive the rotating frame 42 to rotate, and the rotating frame 42 can drive the top rod 431 and the aperture plate 433 to move synchronously. According to usage requirements, the aperture plate 433 to be used is rotated to the position corresponding to the top plate 44, and the top plate 44 drives the aperture plate 433 to extend inward through the top rod 431. Since the length of the top plate 44 is equal to the distance from the aperture plate 433 moving from the placement slot to the center position of the rotating frame 42, the aperture plate 433 just reaches the center position of the rotating frame 42, and the aperture hole on the aperture plate 433 can correspond to the light-transmitting hole on the light-transmitting frame 3, so that the incident laser can be emitted outward from the aperture hole. By changing the size and shape of the aperture hole on the aperture plate 433, the laser can be shaped to adapt to different welding requirements.

[0036] See Figure 5 As shown, as a preferred technical solution of this embodiment, a concave groove is provided on the outer contour of the top plate 44, the outer end of the top rod 431 is slidably set inside the concave groove, and a positioning groove that cooperates with the outer end of the top rod 431 is provided in the middle of the concave groove.

[0037] In the above technical solution, when the top rod 431 contacts the top plate 44, the outer end of the top rod 431 can slide inside the concave groove, and the concave groove serves to limit the top rod 431 to prevent the top rod 431 from sliding up and down. When the top rod 431 moves to the middle position of the top plate 44, at this time, the top rod 431 moves inward to the farthest point, and the positioning groove can clamp and limit the outer end of the top rod 431 to ensure that the incident laser can pass through the aperture hole on the aperture plate 433.

[0038] Continue reading Figure 4 As shown, as a preferred technical solution of this embodiment, the driving unit 45 includes a driving gear 451 and a ring gear 452. A connecting groove is provided at the lower end of the ring frame 41. The driving gear 451 is installed inside the connecting groove through a bearing. The driving gear 451 is connected to the output shaft of the motor. A ring gear 452 is installed at the lower end of the rotating frame 42, and the ring gear 452 is meshed with the driving gear 451.

[0039] In the above technical solution, when the aperture hole needs to be adjusted, the motor drives the ring gear 452 to rotate through the driving gear 451, and the ring gear 452 drives the rotating frame 42 to rotate synchronously. The rotating frame 42 can then push the required aperture plate 433 inward through the top rod 431 according to the needs of use, so that the laser can adapt to different welding requirements.

[0040] See Figure 6 As shown, as a preferred technical solution of this embodiment, a positioning frame 31 is installed at the lower end of the light-transmitting frame 3. The positioning frame 31 is an arc-shaped structure, and a positioning groove that cooperates with the aperture plate 433 is provided on the inner side of the positioning frame 31.

[0041] See Figure 6 As shown, as a preferred technical solution of this embodiment, a flexible pad 32 is symmetrically installed inside the positioning groove, and the flexible pad 32 has a triangular structure.

[0042] In the above technical solution, the positioning frame 31 can accurately cooperate with the aperture plate 433. When the aperture plate 433 is pushed inward, the positioning frame 31 can limit the aperture plate 433 to ensure that the aperture hole on the aperture plate 433 can correspond to the light-transmitting hole. The flexible pad 32 can play a buffering and limiting role. When the aperture plate 433 is extended into the positioning groove or withdrawn from the positioning groove, the aperture plate 433 needs to be rotated to be reset. Therefore, the flexible pad 32 can prevent the aperture plate 433 and the positioning frame 31 from being squeezed and damaged.

[0043] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser spot shaping device, characterized in that: include: A connecting sleeve (1) is in the form of a circular hollow structure, the outer surface of the connecting sleeve (1) is uniformly provided with anti-slip grooves, and the upper end of the inner portion of the connecting sleeve (1) is provided with an internal thread; and A fixing ring (2) is installed in the middle of the connecting sleeve (1); A light-transmitting frame (3) is mounted in the middle of the fixing ring (2). The light-transmitting frame (3) is a circular structure. The upper end surface of the light-transmitting frame (3) is an inwardly inclined arc surface. A light-transmitting hole is provided in the middle of the light-transmitting frame (3). The light-transmitting hole is a conical structure. A shaping component (4) is mounted on the lower end of the fixing ring (2). The middle of the shaping component (4) is connected to the lower end of the light-transmitting hole. Laser light is incident on the shaping component (4) through the light-transmitting hole. The shaping component (4) is used to shape and adjust the spot size and shape of the incident laser light.

2. The laser spot shaping device according to claim 1, characterized in that: The upper surface of the light-transmitting frame (3) is made of a high-temperature resistant material, and heat dissipation grooves are evenly arranged on the upper surface of the light-transmitting frame (3) along its circumference.

3. The laser spot shaping device according to claim 1, characterized in that: The shaping assembly (4) comprises an annular frame (41), a rotating frame (42), an aperture unit (43), a top plate (44) and a driving unit (45); the annular frame (41) is mounted on the lower end of the fixing ring (2); a first annular groove and a second annular groove are arranged on the upper end surface of the annular frame (41); a rotating frame (42) is mounted on the first annular groove via a bearing; the rotating frame (42) is in an annular structure; a regular polygonal groove is arranged in the middle of the rotating frame (42); and a plurality of grooves are evenly arranged on the upper end of the rotating frame (42) for placing the rotating frame (42). The outer side of the rotating frame (42) is evenly provided with through holes connected with the placement groove, and an aperture unit (43) is slidably provided in the through hole. The outer side of the aperture unit (43) is retracted inside the placement groove, and the outer side of the aperture unit (43) is located inside the second annular groove. A top plate (44) is installed inside the second annular groove, and the top plate (44) is matched with the outer side of the aperture unit (43). A driving unit (45) is installed at the lower end of the annular frame (41), and the driving unit (45) is used to drive the rotating frame (42) to rotate.

4. The laser spot shaping device according to claim 3, characterized in that: The aperture unit (43) includes a push rod (431), a telescopic spring (432) and an aperture plate (433); the push rod (431) is slidably arranged in the through hole; the outer end of the push rod (431) is a smooth arc-shaped surface; the telescopic spring (432) is arranged on the push rod (431); the aperture plate (433) is installed on the inner end of the push rod (431); the aperture plate (433) is provided with an aperture hole; and the aperture plate (433) cooperates with the placement groove.

5. The laser spot shaping device according to claim 4, characterized in that: The sizes and shapes of the aperture holes on the aperture plate (433) inside the rotating frame (42) are different.

6. The laser spot shaping device according to claim 5, characterized in that: The top plate (44) has a conical structure, and the length of the top plate (44) is equal to the distance between the aperture plate (433) and the center position of the rotating frame (42) when the aperture plate (433) moves from the placement groove.

7. The laser spot shaping device according to claim 6, characterized in that: A concave groove is provided on the outer contour of the top plate (44), the outer end of the top rod (431) is slidably arranged inside the concave groove, and a positioning groove is provided in the middle of the concave groove to match the outer end of the top rod (431).

8. The laser spot shaping device according to claim 7, characterized in that: The driving unit (45) comprises a driving gear (451) and a ring gear (452). A connecting groove is provided at the lower end of the ring frame (41). The driving gear (451) is installed inside the connecting groove via a bearing. The driving gear (451) is connected to the output shaft of the motor. A ring gear (452) is installed at the lower end of the rotating frame (42). The ring gear (452) is meshed with the driving gear (451).

9. The laser spot shaping device according to claim 8, characterized in that: A positioning frame (31) is installed at the lower end of the light-transmitting frame (3), the positioning frame (31) is an arc-shaped structure, and a positioning groove that cooperates with the aperture plate (433) is provided on the inner side surface of the positioning frame (31).

10. The laser spot shaping device according to claim 9, characterized in that: A flexible pad (32) is symmetrically installed inside the positioning groove, and the flexible pad (32) is in a triangular structure.

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