Laser edge sealer

Abstract

The application provides a laser sealing device with variable light spot, which comprises a laser housing, a laser module and an adjusting rotating wheel. The laser module is used for emitting a light beam. The adjusting rotating wheel is contained in the laser housing and comprises a plurality of lens barrels with different lengths. Each lens barrel is provided with a collimator with different focal lengths. The adjusting rotating wheel is operable to rotate to drive the lens barrels to rotate to align one of the collimators with the light beam to collimate the light beam. According to the above structure, the user can rotate the adjusting rotating wheel to drive different lens barrels to face the light beam, so that the collimator in the lens barrel collimates the light beam. Therefore, according to the need, the collimator with different focal lengths can be selected to collimate the light beam by rotating the adjusting rotating wheel, so as to adjust the light spot size of the laser sealing device.

Description

Technical Field

[0001] The disclosed embodiments of this application relate to the field of edge banding technology, and more specifically, to a laser edge banding device with variable spot size. Background Technology

[0002] Laser edge banding technology uses a high-energy laser beam emitted from a laser edge banding device to instantly activate the laser polymer functional layer of the edge banding tape. This allows the functional layer to penetrate the fiber of the board and form a mechanical "riveting" to achieve seamless edge banding. As a seamless edge banding technology, laser edge banding is gradually becoming an upgraded replacement for other edge banding technologies due to its technological advantages and excellent edge banding effect.

[0003] Due to its wide range of applications, the high-energy laser beam emitted by the laser edge banding device needs to be adjusted according to different occasions.

[0004] However, current adjustable spot laser edge banding devices use a built-in drive motor to straighten the distance between the collimating lens and the adjustment lens, thereby adjusting the spot size. This results in problems such as complex structure, large space occupation, and high cost. Utility Model Content

[0005] This application provides a laser edge banding device with variable spot size, which can solve the technical problems of existing laser edge banding devices being complex in structure, occupying a large space, and having a high cost.

[0006] This application provides a laser edge banding device with variable beam size, including a laser housing, a laser module, and an adjustment wheel. The laser module is housed within the laser housing and is used to emit a laser beam. The adjustment wheel, also housed within the laser housing, includes multiple lens tubes of varying lengths. Each lens tube contains a collimating lens with a different focal length. The adjustment wheel is operably rotatable to rotate a lens tube until one of the collimating lenses aligns with the laser beam, thereby collimating the beam.

[0007] In some embodiments, the adjusting wheel includes a fixed rotating cylinder; the lens tubes are distributed circumferentially along the fixed rotating cylinder and are fixed on the fixed rotating cylinder; the fixed rotating cylinder is also provided with light-emitting holes that correspond one-to-one with the lens tubes, each light-emitting hole and the center line of the corresponding lens tube coincide, and the center line intersects the axis of the fixed rotating cylinder.

[0008] In some embodiments, the adjusting wheel further includes a limiting member, which is fixedly connected to the laser housing, and the fixed rotating cylinder is rotatably mounted inside the limiting member; the fixed rotating cylinder is provided with a plurality of positioning holes, and along the circumferential direction of the fixed rotating cylinder, the included angle between each pair of adjacent positioning holes is equal to the included angle between the center lines of the corresponding two adjacent lens tubes; when the fixed rotating cylinder rotates to the point where the limiting member engages with one of the positioning holes, the lens tube corresponding to the positioning hole rotates to align with the beam.

[0009] In some embodiments, the limiting member includes an elastic member and a positioning bead; the positioning bead is connected to the elastic member; when the fixed rotating cylinder rotates relative to the limiting member, the positioning bead can rotate relative to the fixed rotating cylinder until it is locked in the positioning hole.

[0010] In some embodiments, the fixed rotating drum is provided with a limiting groove, and each positioning hole is provided on the bottom wall of the limiting groove; at least some positioning beads are slidably engaged in the limiting groove, and when the fixed rotating drum rotates, the positioning beads rotate relative to the limiting groove until they are engaged with the positioning holes.

[0011] In some embodiments, the limiting element further includes a positioning sleeve, which is fixed to the laser housing, and the fixed rotating cylinder is rotatably accommodated in the positioning sleeve; the positioning sleeve is provided with a fixing groove, and the elastic element is accommodated and fixed in the fixing groove.

[0012] In some embodiments, the adjusting wheel also includes a knob, which is fixedly connected to the fixed rotating drum and is located outside the laser housing.

[0013] In some embodiments, the laser edge banding device further includes a reflector; the laser housing has a light outlet; the reflector is housed inside the laser housing and is located between the light outlet and the light outlet.

[0014] In some embodiments, the laser edge banding device also includes a window plate disposed on the laser housing and covering the light outlet.

[0015] In some embodiments, the laser edge banding device also includes a focusing lens assembly housed within the laser housing, the focusing lens assembly being positioned between the laser module and the adjusting wheel.

[0016] The beneficial effects of this application are as follows: Unlike existing technologies, the laser edge banding device provided in this application includes a laser housing, a laser module, and an adjusting wheel. The laser module is housed within the laser housing and is used to emit a laser beam. The adjusting wheel is located within the laser housing. This adjusting wheel includes multiple lens tubes of varying lengths, each containing a collimating lens with a different focal length. The adjusting wheel is operable to rotate, causing a lens tube to rotate until one of the collimating lenses aligns with the laser beam, thus collimating the beam. This allows the lens tubes containing collimating lenses of different focal lengths to rotate as the adjusting wheel rotates, causing the laser beam emitted from the laser module to pass through the optical centers of the collimating lenses with different focal lengths. This enables the laser edge banding device to collimate the beam using different collimating lenses, thereby adjusting the spot size of the laser edge banding device. Since this application allows collimating lenses with different focal lengths to be aligned with the beam by manually adjusting the rotation of the rotating wheel, thereby adjusting the beam spot, there is no need to build a drive motor inside the laser housing. This effectively simplifies the beam spot size adjustment structure, thereby reducing the size of the equipment and manufacturing costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the laser edge banding device of this application;

[0018] Figure 2 yes Figure 1 The diagram shown is an exploded view of a laser edge banding device, which includes an adjusting wheel.

[0019] Figure 3 yes Figure 2 A schematic diagram of the structure of the adjusting wheel, which includes a limiting component;

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure of the limiting component;

[0021] Figure 5 yes Figure 3 The diagram shows a partial cross-sectional view of the adjusting wheel.

[0022] In the diagram: 100, laser housing; 10, laser module; 20, focusing lens group; 30, adjusting wheel; 31, lens barrel; 32, collimating lens; 33, fixed rotating cylinder; 34, limiting component; 341, elastic component; 342, positioning bead; 343, positioning sleeve; 344, fixing groove; 35, positioning hole; 36, limiting groove; 37, knob; 40, reflecting mirror; 50, window plate; 60, light outlet. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] The reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0025] The following describes an exemplary structure of a laser edge banding device.

[0026] Please refer to the following: Figures 1-2 This application provides a high-power laser edge banding device with variable spot size. The laser edge banding device includes a laser housing 100, a laser module 10, and an adjustment wheel 30.

[0027] The laser module 10 is housed within the laser housing 100. The laser module 10 is used to emit a parallel laser beam.

[0028] Specifically, the laser module 10 can be, for example, a semiconductor laser head, in which multiple laser diodes are spatially integrated within a heat sink to form a combined parallel beam for emission. Optionally, the laser module 10 can be a fiber laser head, which, in conjunction with a collimation system, achieves beam shaping and emits a high-energy parallel beam. Optionally, the laser module 10 can be a CO2 laser head, which uses a fixed or adjustable beam expander to change the beam diameter and divergence angle, transforming the laser beam from a divergent state into collimated parallel light.

[0029] In some embodiments, the output power of the laser module 10 is variable according to different spot energy density requirements. When the spot size is changed by rotating the adjustment wheel 30, the output power of the laser module 10 can be changed accordingly to reduce the magnitude of the spot energy density change, thereby reducing the probability of laser overheating.

[0030] Please refer to the following: Figure 3 The adjusting wheel 30 is housed within the laser housing 100. The adjusting wheel 30 includes multiple lens tubes 31, each of varying lengths. Each lens tube 31 contains a collimating lens 32, each with a different focal length. That is, multiple collimating lenses 32 with different focal lengths are arranged one-to-one within the lens tubes 31. The number of lens tubes can be greater than or equal to two, and the corresponding number of collimating lenses can also be greater than or equal to two. The collimating lenses 32 are detachably mounted within the lens tubes 31. Collimating lenses 32 of corresponding specifications can be pre-fabricated within the lens tubes 31 as needed; alternatively, the collimating lenses 32 within the lens tubes 31 can be replaced as required. The optical center of each collimating lens 32 lies on the axis of the corresponding lens tube 31.

[0031] When the laser edge banding device is working, by adjusting the rotating wheel 30, the lens barrel 31 of the collimating lenses 32 with different focal lengths inside rotates accordingly. This allows the laser beam emitted from the laser module 10 to pass through the optical center of the collimating lenses 32 with different focal lengths. Thus, the laser edge banding device can collimate the beam using different collimating lenses 32, thereby adjusting the spot size of the laser edge banding device. Since this application allows the collimating lenses 32 with different focal lengths to be aligned with the beam by manually adjusting the rotation of the rotating wheel, thereby adjusting the spot size, there is no need to build a drive motor inside the laser housing. This effectively simplifies the spot size adjustment structure, thereby reducing the size of the equipment and manufacturing costs.

[0032] In some embodiments, please refer to reference 2 and Figure 3 The adjusting wheel 30 also includes a fixed rotating cylinder 33. The lens tubes 31 are distributed circumferentially along the fixed rotating cylinder 33, and each lens tube 31 is fixed on the fixed rotating cylinder 33. When the adjusting wheel 30 rotates, the fixed rotating cylinder 33 rotates accordingly, thereby driving the lens tubes 31 to rotate.

[0033] The fixed rotating cylinder 33 is also provided with light exit holes (not shown) that correspond one-to-one with the lens barrel 31. Each light exit hole coincides with the center line of the corresponding lens barrel 31. Each of these center lines intersects the axis of the fixed rotating cylinder 33, so that the light beam emitted from the laser module can pass through the optical center of the collimating lens 32 inside the lens barrel and then exit through the light exit hole, ensuring the stability of the light beam transmission.

[0034] In some embodiments, the adjusting wheel 30 further includes a limiting member 34. The limiting member 34 is fixedly connected to the laser housing 100 and is sleeved on the fixed rotating cylinder 33. When the adjusting wheel 30 rotates, the fixed rotating cylinder 33 can rotate relative to the limiting member 34.

[0035] To adjust the beam size using a laser edge banding device, the adjusting wheel 30 is rotated, causing the lens barrel 31 to rotate to the desired position. The interaction between the limiting member 34 and the fixed rotating cylinder 33 allows for precise control of the adjusting wheel 30's rotation range. After reaching the desired position, the limiting member 34 locks the fixed rotating cylinder 33, preventing further rotation and thus fixing the lens barrel 31 at the required position, preventing optical path deviation due to excessive rotation of the lens barrel 31. It should be noted that each lens barrel 31 and its internal collimating lens 32, when aligned with the beam as the fixed rotating cylinder 33 rotates, constitutes one beam position. In other words, different beam positions correspond to different focal length collimating lenses 32 aligning with the beam, thus enabling different focal length collimating lenses 32 to collimate the beam.

[0036] Specifically, the fixed rotating cylinder 33 is provided with multiple positioning holes 35. Along the circumferential direction of the fixed rotating cylinder 33, the included angle between any two adjacent positioning holes 35 is equal to the included angle between the center lines of the corresponding two adjacent lens barrels 31. When the fixed rotating cylinder 33 rotates until the limiting member 34 engages with one of the positioning holes 35, the center of the lens barrel 31 corresponding to the positioning hole 35 rotates to align with the beam. Through the synchronous design of the rotation angles of the positioning holes 35 and the lens barrels 31, the adjusting wheel 30 can accurately align with the collimating lenses 32 of different focal lengths when switching gears, maintaining the consistency of the beam transmission path and avoiding a decrease in beam quality due to optical path deviation. Understandably, the number of positioning holes 35 is usually equal to the number of lens barrels 32.

[0037] In some embodiments, such as Figure 4As shown, the limiting member 34 further includes an elastic member 341 and a positioning bead 342; the positioning bead 342 is connected to the elastic member 341. The positioning bead 342 can be a ball-head plunger. The elastic member 341 is disposed between the laser housing 100 and the fixed rotating cylinder 33, and the positioning bead 342 can slide relative to the fixed rotating cylinder 33 until it is locked in the positioning hole 35. The cooperation between the elastic member 341 and the positioning bead 342 achieves precise positioning of the adjusting wheel 30, so that the collimating lenses 32 with different focal lengths can be stably stopped at the preset position during rotation adjustment, avoiding positional displacement due to vibration or external force.

[0038] In some embodiments, the fixed rotating drum 33 is provided with a limiting groove 36. Each positioning hole 35 is provided on the bottom wall of the limiting groove 36 and communicates with the limiting groove 36. At least some positioning beads 342 are slidably engaged in the limiting groove 36. When the fixed rotating drum 33 rotates, the positioning beads 342 rotate relative to the limiting groove 36 until they engage with the positioning holes 35. Under the action of the elastic element 341, the positioning beads 342 always maintain contact with the limiting groove 36, ensuring the stability of the adjusting wheel 30 during rotation and reducing component wear. The engagement between the limiting groove 36 and the positioning holes 35 provides guidance for the positioning beads 342. When the fixed rotating drum 33 rotates, precise gear positioning can be achieved, avoiding spot adjustment deviations caused by inertia or vibration. The limiting groove 36 restricts the rotation angle, preventing excessive rotation of the fixed rotating drum 33 and causing misalignment of optical components, thus improving equipment stability.

[0039] Please see Figure 5 When it is necessary to change the size of the laser edge banding output, the adjusting wheel 30 is rotated, and the positioning bead 342 moves from the current positioning hole 35 to the next positioning hole 35, thereby rotating the rotating cylinder 31 of the adjusting wheel 30, thereby rotating the optical center of the collimating lens 32 with different focal lengths to the focus of the beam.

[0040] In some embodiments, the limiting element further includes a positioning sleeve 343, which is fixed to the laser housing 100. The fixed rotating cylinder 33 is rotatably accommodated in the positioning sleeve 343 and fixed to the positioning sleeve by an elastic member 341. The positioning sleeve 343 is provided with a fixing groove 344, and the positioning bead 342 is connected to the fixing groove 344 by the elastic member 341.

[0041] Through the mating structure of the positioning sleeve 343 and the fixing groove 344, combined with the elastic support of the positioning bead 342 by the elastic element 341, the precise positioning and stable locking of the adjusting wheel 30 can be achieved. The elastic abutment design between the positioning bead 342 and the fixing groove 344 prevents positional shifts caused by vibration or external force, ensuring that collimating lenses 32 with different focal lengths maintain optical center alignment during operation, thereby improving the reliability and repeatability of spot adjustment.

[0042] When adjusting from one gear to another, rotating the adjusting wheel 30 applies pressure to the positioning bead 342 in the fixed groove 344, causing it to move out of the current positioning hole 35. At this point, the positioning bead 342 is abutted and contained within the fixed groove 344, and can slide along the limiting groove 36, i.e., slide relative to the fixed rotating cylinder 33. When sliding to the next positioning hole 35, the positioning bead 342 pops out of the fixed groove 344 and is secured in the positioning hole 35. By setting the limiting member 34 and the positioning hole 35 in cooperation, the positioning bead 342 can switch between being secured in the positioning hole 35 or contained in the fixed groove 344, achieving precise positioning and rotation of the adjusting wheel 30.

[0043] Please see Figure 1 and Figure 3 In some embodiments, the adjusting wheel 30 further includes a knob 37, which is fixedly connected to the fixed rotating cylinder 33 and is located outside the laser housing 100. This allows the adjusting wheel 30 to rotate when the knob 37 is manually rotated outside the laser housing 100, thereby rotating the lens barrel 31 and aligning the optical center of the collimating lens 32 inside the lens barrel 31 with the laser beam for collimation. By placing the knob 37 outside the laser housing 100, the user can intuitively perceive the adjustment process and precisely control the spot size. Compared to traditional electric adjustment methods, this mechanical adjustment scheme has the advantages of simple structure and convenient operation.

[0044] In an optional embodiment, the laser housing 100 is provided with a scale corresponding to the size of the light spot. Rotating the knob 37 to each scale position corresponds to the size of the light spot.

[0045] In some implementation methods, please refer to the following: Figure 1 and Figure 3 The laser edge banding device also includes a reflector 40. The laser housing has a light outlet 60, and the reflector 40 is housed within the laser housing 100, located between the light outlet and the light through-hole. The beam, after being collimated by the adjusting wheel 30, exits through the light outlet and reaches the reflector 40. By setting the reflector 40 within the laser housing 100 to adjust the beam direction, the space occupied by direct emission can be reduced.

[0046] In some embodiments, the laser edge banding device further includes a window 50, which is disposed on the laser housing 100 and covers the light outlet 60. By placing the window 50 on the light outlet 60, it is possible to effectively ensure that the light beam is accurately transmitted to the outside after reflection, while preventing dust or mechanical damage from affecting the optical performance.

[0047] In some embodiments, the laser edge banding device further includes a focusing lens group 20 housed within the laser housing 100, the focusing lens group 20 being disposed between the laser module 10 and the adjusting wheel 30. The focusing lens group 20 focuses the beam incident from the laser module 10, and the beams focused by the focusing lens group 20 have the same focal point. The light spots output by the laser module 10 are all output along a single line, and the light spots are all focused by the focusing lens group 20, and then pass through the focal point of the collimating lens 32. By precisely focusing the beam and ensuring focal point consistency through the focusing lens group 20, the optical path can remain stable when the collimating lenses 32 with different focal lengths are switched, avoiding light spot distortion caused by focal point shift. It can be understood that the adjusting wheel 30 can be horizontally or vertically disposed between the focusing lens group 20 and the reflecting mirror 40, and the beam is transmitted after being emitted through the light outlet hole of the adjusting wheel 30.

[0048] In an optional embodiment, the focusing lens group 20 may have two cylindrical mirrors that focus the emitted parallel beam in both horizontal and vertical directions, and the focal points of the focusing lenses thereon coincide.

[0049] In an optional embodiment, the focused beam emitted from the focusing lens group 20 initially coincides with the center line of any one of the lens barrels 31 of the adjusting wheel 30.

[0050] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A laser edge banding device, characterized in that: include: Laser housing; A laser module, housed within the laser housing, for emitting a laser beam; An adjusting wheel is housed within the laser housing. The adjusting wheel includes multiple mirror tubes of different lengths. Each mirror tube contains a collimating lens with a different focal length. The adjusting wheel is operable to rotate, thereby rotating the lens barrel until one of the collimating lenses aligns with the light beam, thus collimating the light beam.

2. The laser edge banding device according to claim 1, characterized in that: The adjusting wheel includes a fixed rotating drum; The lens barrel is distributed circumferentially along the fixed rotating cylinder, and the lens barrel is fixed on the fixed rotating cylinder; The fixed rotating cylinder is also provided with light-emitting through holes that correspond one-to-one with the lens barrel. Each light-emitting through hole coincides with the center line of the corresponding lens barrel, and the center line intersects with the axis of the fixed rotating cylinder.

3. The laser edge banding device according to claim 2, characterized in that: The adjusting wheel also includes a limiting member, which is fixedly connected to the laser housing, and the fixed rotating cylinder is rotatably installed inside the limiting member; The fixed rotating cylinder is provided with multiple positioning holes. Along the circumferential direction of the fixed rotating cylinder, the included angle between any two adjacent positioning holes is equal to the included angle between the center lines of the corresponding two adjacent lens barrels. When the fixed rotating cylinder rotates until the limiting member engages with one of the positioning holes, the lens barrel corresponding to the positioning hole rotates to align with the beam.

4. The laser edge banding device according to claim 3, characterized in that: The limiting component includes an elastic element and a positioning bead; the positioning bead is connected to the elastic element; when the fixed rotating cylinder rotates relative to the limiting component, the positioning bead can slide relative to the fixed rotating cylinder until it is locked in the positioning hole.

5. The laser edge banding device according to claim 4, characterized in that: The fixed rotating drum is provided with a limiting groove, and each of the positioning holes is provided on the bottom wall of the limiting groove. At least a portion of the positioning beads are slidably engaged in the limiting groove. When the fixed rotating cylinder rotates, the positioning beads rotate relative to the limiting groove until they engage with the positioning hole.

6. The laser edge banding device according to claim 4, characterized in that: The limiting component also includes a positioning sleeve, which is fixed to the laser housing, and the fixed rotating cylinder is rotatably accommodated within the positioning sleeve; The positioning sleeve has a fixing groove, and the elastic element is accommodated and fixed in the fixing groove.

7. The laser edge banding device according to any one of claims 2-6, characterized in that: The adjusting wheel also includes a knob, which is fixedly connected to the fixed rotating cylinder and is located outside the laser housing.

8. The laser edge banding device according to claim 2, characterized in that: It also includes a reflector; The laser housing is provided with a light outlet; The reflector is housed within the laser housing and is located between the light-emitting through-hole and the light-emitting port.

9. The laser edge banding device according to claim 8, characterized in that: It also includes a window plate, which is disposed on the laser housing and covers the light outlet.

10. The laser edge banding device according to claim 1, characterized in that: It also includes a focusing lens assembly housed within the laser housing, the focusing lens assembly being disposed between the laser module and the adjusting wheel.

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