Positioning structure of laser marking machine

Abstract

The utility model discloses a laser marking machine positioning structure which comprises an outer shell, the top of the outer shell is fixedly connected with a working table of a hollow structure, the interior of the working table is fixedly connected with a servo motor, one end of an output shaft of the servo motor is fixedly connected with a shaft body, and the other end of the output shaft of the servo motor is fixedly connected with a rotating shaft. The outer wall of the shaft body is fixedly sleeved with a first main gear and a second main gear, and the outer wall of the first main gear and the outer wall of the second main gear are both connected with driven gears in an engaged mode. By arranging the motor, the shaft body, the first driving gear, the second driving gear, the driven gear, the vertical shaft, the eccentric wheel, the positioning discs, the spring, the bolt and the L-shaped baffle, the two positioning discs rotate relatively, the outer wall of a circuit board is tightly attached to the outer wall of the L-shaped baffle, the two positioning discs are extruded to the outer wall of the circuit board, and when the circuit board is prevented from moving, the circuit board is prevented from being damaged. And the circuit board is positioned, so that the laser can mark the circuit board conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of laser marking machines, in particular to a positioning structure of a laser marking machine. Background Art

[0002] Laser marking machine is a device that uses high-energy laser beams to carve any desired text, graphics and images on the surface of an object. Different from inkjet printers, the effect of laser marking machine is to use high-energy density laser to partially irradiate the circuit board, so that the surface materials of various substances evaporate and expose the deep materials, thereby marking them permanently. This mark can be exquisite patterns, trademarks and texts. Because laser marking machines do not need to use ink and other inkjet printer consumables, the laser printing method is also a relatively economical method, and the pollution to the environment is relatively small. Laser marking machines will be used in the production process of circuit boards. Laser marking machines will permanently mark circuit boards to achieve traceability and identification, and help management and quality control.

[0003] In the prior art, when laser marking a circuit board, the circuit board is usually placed on the workbench of a laser marking machine and the laser performs marking. However, due to the manual placement and calibration of the circuit board, the placement position of the circuit board is prone to deviate from the center, and the circuit board cannot be located directly under the laser, resulting in a tilted mark, which affects the marking effect. Therefore, we propose a positioning structure for a laser marking machine to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a positioning structure for a laser marking machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A positioning structure of a laser marking machine, comprising an outer shell, a hollow workbench fixedly connected to the top of the outer shell, a servo motor fixedly connected to the inside of the workbench, a shaft fixedly connected to one end of the output shaft of the servo motor, a first main gear and a second main gear fixedly sleeved on the outer wall of the shaft, a slave gear meshingly connected to the outer walls of the first main gear and the second main gear, a vertical shaft fixedly connected to the outer walls of the two slave gears, a rotating mechanism provided on the top of the vertical shaft, the rotating mechanism comprising two eccentric wheels, the tops of the two vertical shafts are respectively fixedly connected to the outer walls of the two eccentric wheels, the eccentric The outer wall of the wheel is sleeved with a positioning disc with a hollow structure, and the inner wall of the positioning disc is evenly fixedly connected with multiple springs, one end of each of the multiple springs is fixedly connected to the outer wall of the eccentric wheel, and the positioning disc is driven to rotate by setting multiple springs. After the circuit board is squeezed, it is limited. The workbench is provided with a limiting mechanism, and the limiting mechanism includes a bolt. A circular groove is provided at the bottom of the positioning disc, and a threaded hole is provided on the outer wall of the positioning disc. The inner wall of the threaded hole is threadedly connected to the outer wall of the bolt, and an L-shaped baffle is fixedly connected to the top of the workbench, and one side of the circuit board is limited by setting the L-shaped baffle.

[0007] Preferably, a bearing is fixedly sleeved on the outer wall of the vertical shaft, and the outer ring of the bearing is fixedly connected to the inner wall of the workbench, so that the vertical shaft is assisted in rotation by the bearing.

[0008] Preferably, a movable frame is installed on the top of the workbench, and a laser is installed on the outer wall of the movable frame.

[0009] Preferably, the outer wall of the workbench is provided with two through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the two vertical shafts respectively.

[0010] Preferably, one end of the shaft is rotatably connected to the inner wall of the workbench, and the outer wall of the positioning disc is fixedly inlaid with a silicone ring. The silicone ring is provided to increase the anti-slip ability and prevent the circuit board from sliding after positioning.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] This solution sets a motor, a shaft, a first main gear, a second main gear, a slave gear, a vertical shaft, an eccentric wheel, a positioning disc, a spring, a bolt and an L-shaped baffle to enable the two positioning discs to rotate relative to each other, so that the outer wall of the circuit board is pressed against the outer wall of the L-shaped baffle, and the two positioning discs are squeezed onto the outer wall of the circuit board. The circuit board is positioned while preventing it from moving, so that the laser can mark the circuit board and avoid tilting of the mark. The positioning disc can be further fixed by rotating the bolt, and the servo motor is subsequently reversed to form a pushing process to push out the marked circuit board. The overall operation is simple and no manual calibration and alignment is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a positioning structure of a laser marking machine proposed by the utility model;

[0015] Figure 2 This is a schematic cross-sectional structure diagram of a positioning structure of a laser marking machine proposed by the utility model;

[0016] Figure 3 A laser marking machine positioning structure proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0017] In the figure: 1. outer shell; 2. workbench; 3. movable frame; 4. laser; 5. motor; 6. shaft; 7. first main gear; 8. second main gear; 9. slave gear; 10. vertical shaft; 11. eccentric wheel; 12. positioning disk; 13. spring; 14. bolt; 15. bearing; 16. L-shaped baffle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Depend on Figure 1-Figure 3 As shown, a positioning structure of a laser marking machine is involved, including an outer shell 1, a workbench 2 with a hollow structure is fixedly connected to the top of the outer shell 1, a movable frame 3 is installed on the top of the workbench 2, and a laser 4 is installed on the outer wall of the movable frame 3. The laser 4 is a part of the laser marking machine. When laser marking is performed on the same batch of circuit boards, a suitable position is selected, and the movable frame 3 drives the laser 4 to move so that it is located at a predetermined position, so that the subsequent circuit boards are located below the laser 4 after positioning and calibration.

[0020] A servo motor 5 is fixedly connected to the inside of the workbench 2, one end of the output shaft of the servo motor 5 is fixedly connected to a shaft 6, one end of the shaft 6 is rotatably connected to the inner wall of the workbench 2, and the outer wall of the shaft 6 is fixedly sleeved with a first main gear 7 and a second main gear 8. The operation of the servo motor 5 drives the shaft 6 to rotate, and the rotation of the shaft 6 drives the first main gear 7 and the second main gear 8 to rotate.

[0021] The outer walls of the first main gear 7 and the second main gear 8 are meshed with slave gears 9, and the outer walls of the two slave gears 9 are fixedly connected with vertical shafts 10. The outer wall of the workbench 2 is provided with two through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the two vertical shafts 10 respectively. The outer wall of the vertical shaft 10 is fixedly sleeved with a bearing 15, and the outer ring of the bearing 15 is fixedly connected to the inner wall of the workbench 2. The bearing 15 assists the vertical shaft 10 to rotate stably.

[0022] A rotating mechanism is provided at the top of the vertical shaft 10, and the rotating mechanism includes two eccentric wheels 11. The tops of the two vertical shafts 10 are fixedly connected to the outer walls of the two eccentric wheels 11 respectively, and the outer walls of the eccentric wheels 11 are sleeved with a positioning disk 12 with a hollow structure. The rotation of the eccentric wheel 11 drives multiple springs 13 and the positioning disk 12 to rotate eccentrically. The outer wall of the positioning disk 12 is fixedly inlaid with a silicone ring, and the inner wall of the positioning disk 12 is evenly and fixedly connected with multiple springs 13, and one end of the multiple springs 13 is fixedly connected to the outer wall of the eccentric wheel 11, and the multiple springs 13 elastically buffer and squeeze the positioning disk 12.

[0023] The workbench 2 is provided with a limiting mechanism, which includes a bolt 14. A circular groove is provided at the bottom of the positioning disc 12, and a threaded hole is provided on the outer wall of the positioning disc 12. The inner wall of the threaded hole is threadedly connected to the outer wall of the bolt 14. An L-shaped baffle 16 is fixedly connected to the top of the workbench 2.

[0024] Working principle: When in use, place the circuit board on the workbench 2 and between the two positioning discs 12. The servo motor 5 drives the shaft 6 to rotate. The rotation of the shaft 6 drives the first main gear 7 and the second main gear 8 to rotate. The first main gear 7 and the second main gear 8 rotate to drive the two slave gears 9 to rotate. Since the first main gear 7 and the second main gear 8 are arranged relative to each other, when the two slave gears 9 rotate, the rotation directions are opposite, so that the two vertical shafts 10 rotate in opposite directions. The rotation of the two vertical shafts 10 drives the two eccentric wheels 11 to rotate relative to each other. The eccentric wheel 11 on the left rotates counterclockwise, and the eccentric wheel 11 on the right rotates clockwise, driving the two positioning discs 12 to rotate relative to each other. When the positioning disc 12 contacts the outer wall of the silicone ring, the circuit After the board is turned, it is driven to move toward the L-shaped baffle 16 and close to the outer wall of the L-shaped baffle 16. As the two positioning discs 12 continue to rotate and squeeze onto the outer wall of the circuit board, multiple springs 13 are deformed. The elastic force of multiple springs 13 ensures that the positioning disc 12 is squeezed onto the outer wall of the circuit board to position it. When further fixation is needed, the bolt 14 is rotated to make the bottom of the bolt 14 squeeze onto the top of the eccentric wheel 11 to fix the positioning disc 12 on the eccentric wheel 11; the laser 4 runs to mark the circuit board with a laser beam. After the marking is completed, the servo motor 5 is reversed to make the two positioning discs 12 rotate relative to each other and reset. The eccentric wheel 11 on the left rotates clockwise, and the eccentric wheel 11 on the right rotates counterclockwise, forming a pushing process to push out the marked circuit board.

[0025] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part all adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0026] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A positioning structure for a laser marking machine, comprising an outer shell (1), characterized in that: A workbench (2) with a hollow structure is fixedly connected to the top of the outer shell (1), a servo motor (5) is fixedly connected to the inside of the workbench (2), one end of the output shaft of the servo motor (5) is fixedly connected to a shaft body (6), a first main gear (7) and a second main gear (8) are fixedly sleeved on the outer wall of the shaft body (6), the outer walls of the first main gear (7) and the second main gear (8) are meshingly connected with a slave gear (9), the outer walls of the two slave gears (9) are fixedly connected with a vertical shaft (10), a rotating mechanism is provided on the top of the vertical shaft (10), the rotating mechanism comprises two eccentric wheels (11), and the tops of the two vertical shafts (10) are respectively The workbench (2) is fixedly connected to the outer walls of the two eccentric wheels (11); the outer walls of the eccentric wheels (11) are sleeved with a positioning disc (12) with a hollow structure; the inner walls of the positioning disc (12) are evenly and fixedly connected with a plurality of springs (13); one ends of the plurality of springs (13) are fixedly connected to the outer walls of the eccentric wheels (11); the workbench (2) is provided with a limiting mechanism; the limiting mechanism comprises a bolt (14); a circular groove is provided at the bottom of the positioning disc (12); a threaded hole is provided on the outer wall of the positioning disc (12); the inner wall of the threaded hole is threadedly connected to the outer wall of the bolt (14); and an L-shaped baffle (16) is fixedly connected to the top of the workbench (2).

2. A laser marking machine positioning structure according to claim 1, characterized in that: A bearing (15) is fixedly sleeved on the outer wall of the vertical shaft (10), and the outer ring of the bearing (15) is fixedly connected to the inner wall of the workbench (2).

3. A laser marking machine positioning structure according to claim 1, characterized in that: A movable frame (3) is installed on the top of the workbench (2), and a laser (4) is installed on the outer wall of the movable frame (3).

4. A laser marking machine positioning structure according to claim 1, characterized in that: The outer wall of the workbench (2) is provided with two through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the two vertical shafts (10) respectively.

5. The laser marking machine positioning structure according to claim 1, characterized in that: One end of the shaft (6) is rotatably connected to the inner wall of the workbench (2), and the outer wall of the positioning disc (12) is fixedly inlaid with a silicone ring.

Images