Circuit board laser marking machine

Abstract

The utility model relates to the technical field of laser marking, in particular to a circuit board laser marking machine which comprises a working table, a lead screw sliding assembly and a laser marking assembly are arranged on the working table, the lead screw sliding assembly is vertically arranged on the working table, the laser marking assembly is vertically arranged on the lead screw sliding assembly, and a belt conveying device is arranged on the working table. The belt conveying device comprises a frame, a conveying belt and a controller, the conveying belt is wound on the frame, the controller is used for controlling the conveying belt to move, a positioning jig is arranged on the top face of the conveying belt and comprises a mounting base and a positioning plate, the bottom of the mounting base is connected with the belt, and a mounting groove is formed in the top face of the mounting base. According to the laser marking device, the positioning jig is arranged on the conveying belt, a circuit board only needs to be placed on the positioning jig, marking can be completed when the conveying belt moves to the position below the laser marking assembly, the overall automation degree of the whole marking process is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser marking, and particularly relates to a laser marking machine for circuit boards. Background Art

[0002] Marking refers to the act of marking text, pictures, etc. on products during production according to relevant national regulations or the management needs of enterprises themselves. There are various marking methods, such as laser marking, inkjet marking, scribing marking, thermal transfer marking, etc. Among them, laser marking technology has been widely used due to its advantages of high speed, high precision, and good effect. After the circuit board is produced, it is also necessary to mark the production date or product number on its shell, which can not only facilitate batch management of products but also provide anti-counterfeiting identification.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN206764139U discloses a high-precision laser marking machine, which includes a storage inner groove, an electric control cabinet handle, an operation panel, an all-in-one computer, a control head, a connecting block, a rotating handle, a lifting column, a rotating laser head, a placement plate for the object to be printed, a heat insulation plate, an electric control cabinet body, a heat dissipation port, and a support foot. The rotating laser head has a fixed shaft, a rotating head, a limiting head, and a laser emitting head. The fixed shaft is welded to the control head. There are two limiting heads, which are respectively welded to the left and right ends below the fixed shaft. The rotating head is arranged between the limiting heads and is movably connected to the fixed shaft. The laser emitting head is installed below the rotating head and is electrically connected to the circuit board inside the rotating head.

[0004] For the above-mentioned disclosed high-precision laser marking machine, the material needs to be manually placed on the placement plate for the object to be printed, and then the position is adjusted by adjusting the rotating handle, the lifting column, and the rotating laser head, resulting in a low overall automation degree of the entire marking process. Content of the Utility Model

[0005] In view of the above technical problems existing in the prior art, the utility model provides a laser marking machine for circuit boards.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A laser marking machine for circuit boards includes a workbench. A screw sliding component and a laser marking component are arranged on the workbench. The screw sliding component is vertically arranged on the workbench, and the laser marking component is vertically arranged on the screw sliding component. A belt transmission device is arranged on the workbench. The belt transmission device includes a frame, a conveyor belt, and a controller. The conveyor belt is wound around the frame, and the controller is used to control the operation or stop of the conveyor belt. A positioning fixture is arranged on the surface of the conveyor belt. The positioning fixture includes a mounting base and a positioning plate. The bottom of the mounting base is connected to the conveyor belt. An installation groove is arranged on the top surface of the mounting base, and the positioning plate is fixedly arranged in the installation groove.

[0008] Preferably, the top of the positioning plate is provided with a positioning groove and limiting columns, and a plurality of limiting columns are arranged around the outer frame of the positioning groove.

[0009] Preferably, the top of the positioning plate is further provided with a first pick-and-place port and a second pick-and-place port, the first pick-and-place port and the second pick-and-place port are arranged opposite to each other, and the first pick-and-place port and the second pick-and-place port are connected to the positioning groove.

[0010] Preferably, the screw rod sliding assembly includes a housing, a screw rod, a ball nut and a rotating handle. The screw rod is connected to the top end and the bottom end of the housing. The screw rod penetrates through the ball nut. The rotating handle is arranged at the top end of the housing and is connected to the screw rod. By rotating the rotating handle, the screw rod rotates and then drives the ball nut to move.

[0011] Preferably, the laser marking device includes a laser, a laser beam expander and a laser scanning galvanometer. The laser is connected to the ball nut. The laser scanning galvanometer is connected to the laser through the laser beam expander. The lens of the laser scanning galvanometer is located above the positioning fixture.

[0012] Preferably, a positioning camera and a light source assembly are arranged outside the laser scanning galvanometer. The light source assembly includes a light source bracket and a positioning light source. The positioning camera is arranged above the positioning light source.

[0013] Preferably, a dust extraction box is further arranged outside the laser scanning galvanometer. The top end of the dust extraction box is fixed to the top of the laser scanning galvanometer. The bottom end of the dust extraction box is close to the lens of the laser scanning galvanometer. A dust extraction port is further arranged at the bottom end of the dust extraction box close to the lens of the laser scanning galvanometer.

[0014] Preferably, the positioning fixtures are fixedly arranged on the conveyor belt and there are multiple of them. The distance between adjacent positioning fixtures is the same.

[0015] Advantages of the present utility model:

[0016] A circuit board laser marking machine of the present utility model includes a workbench. A screw rod sliding assembly and a laser marking assembly are arranged on the workbench. The screw rod sliding assembly is vertically arranged on the workbench. The laser marking assembly is vertically arranged on the screw rod sliding assembly. A belt transmission device is arranged on the workbench. The belt transmission device includes a frame, a conveyor belt and a controller. The conveyor belt is wound around the frame. The controller is used to control the movement of the conveyor belt. Positioning fixtures are arranged on the outer surface of the conveyor belt. The positioning fixture includes a mounting base and a positioning plate. The bottom of the mounting base is connected to the belt. An installation groove is arranged on the bottom surface of the mounting base. The positioning plate is fixedly arranged in the installation groove. By arranging the positioning fixture on the conveyor belt, only the circuit board needs to be placed on the positioning fixture, and marking can be completed when the conveyor belt moves to the lower part of the laser marking assembly, which improves the overall automation degree of the whole marking process and also improves the work efficiency. Description of the Drawings

[0017] Figure 1 Is a perspective view of a laser marking machine for circuit boards in an embodiment.

[0018] Figure 2 Is a perspective view of the screw sliding assembly in an embodiment.

[0019] Figure 3 Is a perspective view of the laser marking assembly in an embodiment.

[0020] Figure 4 Is another perspective view of the laser marking assembly in an embodiment.

[0021] Figure 5 Is a perspective view of the belt transmission device in an embodiment.

[0022] Figure 6 Is an exploded view of the positioning fixture in an embodiment.

[0023] Reference numerals: 1, workbench;

[0024] 2, screw sliding assembly; 201, housing; 202, screw; 203, ball nut; 204, turning handle;

[0025] 3, laser marking assembly; 301, laser; 302, laser beam expander; 303, laser scanning galvanometer; 304, positioning camera; 305, light source assembly; 306, light source bracket; 307, positioning light source; 308, dust extraction box;

[0026] 4, belt transmission device; 401, frame; 402, conveyor belt; 403, controller; 404, positioning fixture; 405, mounting base; 406, mounting groove; 407, positioning plate; 408, positioning groove; 409, limit post; 410, first pick-up and placement port; 411, second pick-up and placement port. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] As Figures 1 to 6 shown, a laser marking machine for circuit boards includes a workbench 1, on which a screw sliding assembly 2, a laser marking assembly 3 and a belt conveyor are provided. Among them, the screw sliding assembly 2 is vertically arranged on the workbench 1, the laser marking group is vertically arranged on the screw sliding assembly 2, the screw sliding assembly 2 is used to adjust the laser marking assembly 3 up and down, the belt transmission device 4 is used to convey the circuit board, and the laser marking assembly 3 is used to mark the circuit board on the belt transmission device 4.

[0029] Further, the screw rod sliding assembly 2 includes a housing 201, a screw rod 202, a ball nut 203 and a rotating handle 204. The screw rod 202 is arranged inside the housing 201, and the screw rod 202 connects the top and bottom of the housing 201. The screw rod 202 passes through the ball nut 203. The rotation of the screw rod 202 drives the ball nut 203 to move up and down. The rotating handle 204 is arranged on the top of the housing 201 and is connected to the screw rod 202. By rotating the rotating handle 204, the screw rod 202 is driven to rotate, and then the ball nut 203 is driven to move up and down. Due to the setting of the rotating handle 204, it is more labor-saving and accurate when adjusting the ball nut 203 up and down.

[0030] Further, the laser marking assembly 3 includes a laser 301, a laser beam expander 302 and a laser scanning galvanometer 303. The laser scanning galvanometer 303 is connected to the laser 301 through the laser beam expander 302. Among them, the laser 301 is connected to the ball nut 203. The up and down movement of the ball nut 203 adjusts the laser marking assembly 3. The light outlet of the lens of the laser scanning galvanometer 303 is vertically downward, and the emitted laser is perpendicular to the upper end surface of the circuit board in the belt conveyor.

[0031] A positioning camera 304 is arranged outside the laser scanning galvanometer 303. By setting the positioning camera 304, the distance to be adjusted by the screw rod sliding assembly 2 is determined. A light source assembly 305 for increasing brightness is also arranged outside the laser scanning galvanometer 303. The light source assembly 305 is arranged below the positioning camera 304. The light source assembly 305 includes a light source bracket 306 and a positioning light source 307 arranged at the bottom of the light source bracket 306. The area below the positioning camera 304 is illuminated by the light source assembly 305, so that the positioning camera 304 can more accurately identify the circuit board below, facilitating the determination of the adjustment range of the screw rod sliding assembly 2 for it.

[0032] A dust extraction box 308 is also arranged outside the laser scanning galvanometer 303. Among them, the top end of the dust extraction box 308 is fixed on the top of the laser scanning galvanometer 303, and the bottom end of the dust extraction box 308 is close to the lens of the laser scanning galvanometer 303. A dust extraction port 309 is also arranged at the bottom end of the dust extraction box 308 close to the lens of the laser scanning galvanometer 303. By arranging the dust extraction box 308 outside the laser scanning galvanometer 303, when the laser scanning galvanometer 303 finishes working, the dust extraction port 309 will timely suck away the smoke and dust generated by the laser scanning galvanometer 303, avoiding the smoke and dust from falling into the gaps of the various components of the marking machine or onto the marking surface of the product, and also avoiding the harm to the health of the operator when the smoke and dust spreads to the outside.

[0033] Further, a belt transmission device 4 is also provided on the workbench 1. The belt transmission device 4 includes a frame 401, a conveyor belt 402, and a controller 403. The conveyor belt 402 is wound around the frame 401 and is used to convey circuit boards. The controller 403 is used to control the operation or stop of the conveyor belt 402 wound around the frame 401.

[0034] A number of positioning fixtures 404 are fixedly provided on the top surface of the conveyor belt 402, and the distance between adjacent positioning fixtures 404 is the same. The positioning fixture 404 includes a mounting base 405. The bottom surface of the mounting base 405 is fixedly connected to the top surface of the conveyor belt 402. An installation groove 406 is formed on the top surface of the mounting base 405. The positioning fixture 404 further includes a positioning block, and the positioning block is fixedly arranged in the installation groove 406.

[0035] A positioning groove 408 is provided on the top surface of the positioning plate 407, and the positioning groove 408 is used to place the circuit board. A number of limiting columns 409 are provided on the top surface of the positioning plate 407. The number of limiting columns 409 is multiple, and the multiple limiting columns 409 are arranged around the outer frame of the positioning groove 408. By providing multiple limiting columns 409, when the circuit board is placed, it has a guiding function, enabling the circuit board to be accurately placed in the positioning groove 408.

[0036] A first pick-and-place port 410 and a second pick-and-place port 411 are further provided on the top of the positioning block. The first pick-and-place port 410 and the second pick-and-place port 411 are respectively connected to the positioning groove 408, and the first pick-and-place port 410 and the second pick-and-place port 411 are arranged oppositely. By providing the first pick-and-place port 410 and the second pick-and-place port 411 on the top of the positioning block, it is more convenient when the circuit board is picked and placed.

[0037] In the description of the present invention, obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Claims

1. A circuit board laser marking machine, characterized in that: The invention comprises a workbench (1), wherein a screw sliding assembly (2) and a laser marking assembly (3) are provided on the workbench (1), wherein the screw sliding assembly (2) is vertically arranged on the workbench (1), and the laser marking assembly (3) is vertically arranged on the screw sliding assembly (2). A belt transmission device (4) is provided on the workbench (1), wherein the belt transmission device (4) comprises a frame (401), a conveyor belt (402) and a controller (403), wherein the conveyor belt (402) is wound around the frame (401), and the controller (403) is used to control the conveyor belt (402) to run or stop. A positioning fixture (404) is provided on the surface of the conveyor belt (402), and the positioning fixture (404) comprises a mounting base (405) and a positioning plate (407), wherein the bottom of the mounting base (405) is connected to the conveyor belt (402), and a mounting groove (406) is provided on the top surface of the mounting base (405), and the positioning plate (407) is fixedly arranged in the mounting groove (406).

2. A circuit board laser marking machine according to claim 1, characterized in that: A positioning groove (408) and a limiting column (409) are provided on the top of the positioning plate (407), and a plurality of limiting columns (409) are arranged around the outer frame of the positioning groove (408).

3. A circuit board laser marking machine according to claim 2, characterized in that: A first access opening (410) and a second access opening (411) are also provided on the top of the positioning plate (407). The first access opening (410) and the second access opening (411) are arranged opposite to each other, and both the first access opening (410) and the second access opening (411) are connected to the positioning groove (408).

4. A circuit board laser marking machine according to claim 1, characterized in that: The screw rod sliding assembly (2) comprises a housing (201), a screw rod (202), a ball nut (203) and a rotating handle (204). The screw rod (202) is connected to the top end of the housing (201) and the bottom end of the housing (201). The screw rod passes through the ball nut (203). The rotating handle (204) is arranged at the top end of the housing (201) and is connected to the screw rod (202). By rotating the rotating handle (204), the screw rod (202) is driven to rotate and the ball nut (203) is driven to move.

5. A circuit board laser marking machine according to claim 4, characterized in that: The laser marking device comprises a laser (301), a laser beam expander (302) and a laser scanning galvanometer (303); the laser (301) is connected to the ball nut (203); the laser scanning galvanometer (303) is connected to the laser (301) via the laser beam expander (302); and a lens of the laser scanning galvanometer (303) is located above a positioning fixture (404).

6. A circuit board laser marking machine according to claim 5, characterized in that: A positioning camera (304) and a light source assembly (305) are provided outside the laser scanning galvanometer (303). The light source assembly (305) includes a light source bracket (306) and a positioning light source (307). The positioning camera (304) is provided above the positioning light source (307).

7. A circuit board laser marking machine according to claim 6, characterized in that: A dust extraction box (308) is further provided on the outside of the laser scanning galvanometer (303), the top end of the dust extraction box (308) is fixed to the top of the laser scanning galvanometer (303), the bottom end of the dust extraction box (308) is close to the lens of the laser scanning galvanometer (303), and a dust extraction port (309) is further provided on the bottom end of the dust extraction box (308) close to the lens of the laser scanning galvanometer (303).

8. The circuit board laser marking machine according to claim 1, characterized in that: The positioning jig (404) is fixedly arranged on the conveyor belt (402) and is provided in plurality, and the distances between adjacent positioning jigs (404) are the same.

Images