Multi-light-source coincident carving device

Abstract

The utility model discloses a multi-light-source coincidence carving device which comprises an annular array base, a time-sharing control unit and a cross-shaped movable sliding table, a plurality of hole sites are evenly distributed on the annular array base, laser modules are inserted into the hole sites, and after the laser modules are inserted, optical axes naturally point to the circle center of the annular array base. An L-shaped support is arranged on the annular array base and located at the light emitting end of the laser, and a plano-convex lens is installed on the L-shaped support. By means of multi-light-source energy superposition, high-energy-density engraving is achieved on the premise that single-light-source power is not increased, machining efficiency is improved, by regulating and controlling a multi-light-source triggering time sequence and dispersing heat accumulation, a single high-power light source is replaced with a plurality of low-power lasers, equipment cost is reduced, and cost performance is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light engraving technical field, concretely is a kind of multi-light source coincident engraving device. BACKGROUND

[0002] Light engraving technology is a kind of non-contact high-precision processing technology based on high-energy laser beam on material surface, by precisely controlling laser parameters (such as power, wavelength, pulse frequency), laser beam is irradiated on target position, realizes the local gasification or ablation of material, to form permanent mark or complex structure, is applied to the texture engraving of mould, identification mark of instrument parts, ornament customization and other fields.

[0003] Current mainstream light engraving equipment generally uses single high-power laser, adjusts galvanometer system to control beam scanning path, cooperates focusing lens to realize material processing.Single laser needs to output high energy to maintain processing efficiency.However, the engraving efficiency of this scheme is limited by the upper limit of power of single light source;And energy concentration may cause significant heat accumulation, and additional refrigeration system needs to be configured to reduce the risk of equipment overheating;The high cost of high-power laser also limits the use of this technology in some low-profit small and medium-sized processing scenes to some extent.

[0004] Therefore, we propose a multi-light source coincident engraving device to solve the problems raised in the above. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of multi-light source coincident engraving device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of multi-light source coincident engraving device, comprising: annular array base, time-sharing control unit and cross mobile sliding table, the annular array base is evenly distributed with several hole sites, laser module is inserted in hole site, laser module is inserted after optical axis natural direction of annular array base's center, annular array base is located at the light-emitting end of laser and is configured L type support, L type support is installed flat convex lens.

[0007] Preferably, the hole site tolerance on the annular array base is controlled within ±0.05mm.

[0008] Preferably, the laser module contains several 30W fiber lasers, and the tail of the laser is attached to the heat dissipation fin 1 through the heat-conducting silica gel.

[0009] Preferably, the L type support and annular array base can be relatively positioned and moved, the L type support slides along the direction of laser optical axis, and rotates along its own axial direction, and is positioned by self-locking nut.

[0010] Preferably, the annular array base is fixedly connected to a base bracket, and the other end of the base bracket is detachably connected to a metal base.

[0011] Preferably, the metal base is provided with a cross-shaped moving slide, which is a dual-axis moving platform in the X and Y axes. The cross-shaped moving slide is mainly composed of a ball screw guide rail and a stepper motor drive.

[0012] Preferably, the cross-shaped moving slide is provided with a placement platform, and a crosshair area is provided at the center of the placement platform. A photoelectric sensor with a four-photosensitive unit array is embedded in this area, and the photoelectric sensor is connected to the time-division control unit.

[0013] Preferably, the time-division control unit includes a control core, which consists of an STM32 microcontroller and a PWM output module. It independently controls the power of each laser. The control logic of the time-division control unit includes timing triggering and power adjustment. When timing is triggered, the power of several lasers is controlled in a time-division manner, allowing the lasers to switch between high power and low power modes in sequence. When adjusting the power, the power range is dynamically adjusted according to the type of engraving material.

[0014] Preferably, the annular array base is divided into individual units, and each individual unit of the annular array base 3 is assembled and fixed from both sides.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By superimposing the energy of multiple light sources, high energy density engraving can be achieved without increasing the power of a single light source, thus improving processing efficiency. Furthermore, by controlling the triggering sequence of multiple light sources, heat accumulation can be dispersed, and multiple low-power lasers can be used to replace a single high-power light source, thereby reducing equipment costs and optimizing cost-effectiveness.

[0017] 2. Furthermore, the pre-calibration of the time-division control unit avoids the complexity of dynamic adjustment, simplifies user operation, and significantly optimizes processing accuracy and stability;

[0018] 3. The circular array base is assembled and fixed from both sides, expanding the laser to six to eight, thereby expanding the light source. More light sources can increase the total power and meet the engraving needs of different materials. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram showing the cooperation between the cross-shaped moving slide and the annular array base in Embodiment 1 of this utility model;

[0021] Figure 3 This is Embodiment 1 of the present utility model. Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0023] In the diagram: 1. Heat sink; 2. Laser module; 3. Circular array base; 4. Plano-convex lens; 5. L-shaped bracket; 6. Base bracket; 7. Metal base; 8. Cross-shaped sliding table; 9. Storage platform. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-3 This utility model provides a technical solution: a multi-light source overlapping engraving device, including: a ring array base 3 and a time-division control unit. The ring array base 3 is made of aluminum alloy. Four mounting holes are evenly distributed on the ring array base 3, with tolerance controlled within ±0.05mm. A laser module 2 is inserted into the hole, ensuring that the optical axis of the laser module 2 naturally points to the center of the ring array base 3 after insertion.

[0026] Laser module 2 uses four 30W fiber lasers. Taking wood relief carving as an example, during installation, the operator presses the laser into the hole of the ring array base 3. The tail of the laser is attached to the heat sink 1 with thermally conductive silicone to maintain the working temperature below 40℃ at room temperature.

[0027] The ring array base 3 is located at the light-emitting end of the laser and is equipped with an L-shaped bracket 5. A plano-convex lens 4 is installed on the L-shaped bracket 5.

[0028] The L-shaped bracket 5 and the annular array base 3 can be positioned relative to each other. The L-shaped bracket 5 slides along the laser optical axis and rotates along its own axis, and is positioned by a self-locking nut.

[0029] The L-shaped bracket 5 is adjustable in angle and front-to-back distance, enabling adjustment of the angle and front-to-back distance of the plano-convex lens 4 to meet practical applicability.

[0030] The annular array base 3 is fixedly connected to the base bracket 6, and the other end of the base bracket 6 is detachably connected to the metal base 7.

[0031] A cross-shaped moving slide 8 is provided on the metal base 7. The cross-shaped moving slide 8 is a dual-axis moving platform with X and Y axes. The cross-shaped moving slide 8 is mainly composed of ball screw guide rails and stepper motor drive.

[0032] A platform 9 is provided on the cross-shaped moving slide 8. A crosshair area is provided in the center of the platform 9. A photoelectric sensor with a four-photosensitive unit array is embedded in this area to detect the position of the focal spot and to provide feedback on the calibration status through red and green LED indicators.

[0033] The time-sharing control unit contains a control core, which consists of an STM32 microcontroller and a PWM output module, and independently regulates the power of each laser (10%-100%).

[0034] The control logic of the time-sharing control unit includes timing triggering and power regulation. Timing triggering refers to the time-sharing regulation of the power of the four lasers, allowing the lasers to switch between high power and low power modes in sequence, thereby reducing the risk of overheating of a single laser.

[0035] Power adjustment refers to dynamically adjusting the power range according to the type of carving material to ensure carving efficiency.

[0036] The installation method is as follows: First, press the laser module 2 connected to the heat sink 1 into the holes of the ring array base 3. Then, fix the ring array base 3 to the metal base 7 through the base bracket 6. Connect the laser power supply and controller. During the calibration stage, turn on the laser one by one, adjust the plano-convex lens 4, and observe the LED lights. If all LEDs are lit up with green lights, the calibration is complete.

[0037] This device achieves high energy density engraving without increasing the power of a single light source by superimposing the energy of multiple light sources, thereby improving processing efficiency. Furthermore, by controlling the triggering sequence of multiple light sources, it disperses heat accumulation, uses multiple low-power lasers to replace a single high-power light source, reduces equipment costs, optimizes cost-effectiveness, and avoids the complexity of dynamic adjustment through a pre-calibrated fixed structure.

[0038] Example 2: Please refer to Figure 4 This utility model provides a technical solution: a multi-light source overlapping engraving device, including: a ring array base 3. The difference between this embodiment and the first embodiment is that the ring array base 3 is divided into individual units. Each individual unit of the ring array base 3 is fixed from both sides to form six units, which expands the laser to six, thereby expanding the light source. More light sources can increase the total power and meet the engraving needs of different materials.

[0039] The difference between this embodiment and Embodiment 1 is that the stepper motor of the cross-shaped moving slide 8 is designed as a closed-loop servo motor, which improves the repeatability of positioning accuracy.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-light source overlapping engraving device, comprising: The ring array base (3), time-division control unit and cross moving slide (8) are characterized in that: a number of holes are evenly distributed on the ring array base (3), and a laser module (2) is inserted into the hole. After the laser module (2) is inserted, the optical axis naturally points to the center of the ring array base (3). The ring array base (3) is equipped with an L-shaped bracket (5) at the light-emitting end of the laser, and a plano-convex lens (4) is installed on the L-shaped bracket (5).

2. The multi-light source overlapping engraving device according to claim 1, characterized in that, The hole tolerance on the annular array base (3) is controlled within ±0.05mm.

3. The multi-light source overlapping engraving device according to claim 1, characterized in that, The laser module (2) contains several 30W fiber lasers, and the tail of the laser is attached to a heat sink (1) by thermally conductive silicone.

4. The multi-light source overlapping engraving device according to claim 1, characterized in that, The L-shaped bracket (5) and the annular array base (3) can be positioned relative to each other. The L-shaped bracket (5) slides along the optical axis of the laser and rotates along its own axis, and is positioned by a self-locking nut.

5. The multi-light source overlapping engraving device according to claim 4, characterized in that, The annular array base (3) is fixedly connected to the base bracket (6), and the other end of the base bracket (6) is detachably connected to the metal base (7).

6. The multi-light source overlapping engraving device according to claim 5, characterized in that, The metal base (7) is provided with a cross-shaped moving slide (8), which is a dual-axis moving platform in the X and Y axes. The cross-shaped moving slide (8) is mainly composed of a ball screw guide rail and a stepper motor drive.

7. The multi-light source overlapping engraving device according to claim 6, characterized in that, The cross-shaped sliding slide (8) is provided with a placement platform (9), and a cross-shaped crosshair area is provided in the center of the placement platform (9). A photoelectric sensor with a four-photosensitive unit array is embedded in this area, and the photoelectric sensor is connected to the time-division control unit.

8. The multi-light source overlapping engraving device according to claim 7, characterized in that, The time-division control unit includes a control core, which consists of an STM32 microcontroller and a PWM output module. It independently regulates the power of each laser. The control logic of the time-division control unit includes timing triggering and power adjustment. When timing is triggered, the power of several lasers is adjusted in a time-division manner, allowing the lasers to switch between high power and low power modes in sequence. When adjusting the power, the power range is dynamically adjusted according to the type of engraving material.

9. The multi-light source overlapping engraving device according to claim 1, characterized in that, The ring array base (3) is divided into individual units, and each individual unit of the ring array base (3) is fixed together from both sides.

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