A double-sided laser engraving device for PCB board

Abstract

The utility model belongs to PCB processing device technical field discloses a kind of double-sided laser engraving device for PCB, including base and the mounting bracket of fixed connection on the base, the top of the mounting bracket is provided with clamping assembly, and the both sides of the mounting bracket are mirror image and provided with processing assembly;Clamping assembly, it includes the first clamping plate that can move up and down and the second clamping plate and third clamping plate that can relative motion, the first clamping plate, second clamping plate and third clamping plate are all set up and clamped groove, the utility model is processed by the mirror image of mounting bracket both sides and set up processing assembly, cooperation clamping assembly in the second clamping plate of two-way adjustable, third clamping plate and the first clamping plate of liftable, realized to PCB board double side synchronous engraving processing, exempted from turning action, avoid the time waste caused by repeated positioning and alignment, shorten the processing cycle of single product, substantially improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing equipment technology, and more specifically, to a double-sided laser engraving device for PCB boards. Background Technology

[0002] Printed circuit boards (PCBs) are the core support and electrical connection carriers of electronic components. Their surfaces usually need to be marked with information such as text, symbols or barcodes. Laser engraving technology, with its non-contact, high-precision, permanent marking and good processing flexibility, has become one of the key processes for marking information on PCB surfaces. As electronic products develop towards miniaturization and high integration, the application of double-sided and even multi-layer PCBs is becoming increasingly widespread.

[0003] However, when traditional PCB laser engraving equipment is required to handle double-sided processing, it mainly relies on operators to manually flip the PCB board or use mechanical structures to flip it. However, regardless of whether manual or mechanical flipping is used, the processing flow must be interrupted after one side is processed, the flipping action must be performed, and then the board must be repositioned and aligned before the other side can be processed. The flipping process increases the processing cycle of a single product, resulting in low overall production efficiency.

[0004] In view of this, we propose a double-sided laser engraving device for PCB boards. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to provide a double-sided laser engraving device for PCB boards, so as to solve the problem of low efficiency of traditional laser engraving devices for PCB boards when performing double-sided processing and flipping, as mentioned in the background art.

[0007] 2. Technical Solution

[0008] A double-sided laser engraving device for PCB boards includes a base and a mounting bracket fixedly connected to the base. A clamping assembly is provided on the top of the mounting bracket, and processing assemblies are mirror-arranged on both sides of the mounting bracket.

[0009] The clamping assembly includes a first clamping plate that can move up and down, and a second clamping plate and a third clamping plate that can move relative to each other. Each of the first clamping plate, the second clamping plate and the third clamping plate is provided with a clamping groove. The clamping assembly is used to clamp PCBs of different sizes for processing.

[0010] The processing assembly includes a movable frame that can move up and down and a laser engraving machine that can change its horizontal position on the movable frame. The processing assembly is used to perform laser engraving on both sides of a PCB board simultaneously.

[0011] Preferably, a first electric push rod is fixedly connected to the bottom of the mounting frame, the extended end of the first electric push rod is fixedly connected to the bottom of the first clamping plate, a movable block is fixedly connected to the movable plate, and a movable groove adapted to the size of the movable block is provided on the mounting frame.

[0012] Preferably, the second clamping plate and the third clamping plate are slidably connected to the top of the mounting frame via a first slider. The top of the mounting frame is provided with a first groove that matches the size of the first slider. A first motor is fixedly connected to the top of the mounting frame. The output end of the first motor is fixedly connected to a bidirectional screw for driving the second clamping plate and the third clamping plate to move closer to each other or further away from each other.

[0013] Preferably, the threads at both ends of the bidirectional screw are arranged in opposite directions, and both ends of the bidirectional screw are connected to a first threaded sleeve through a ball screw pair thread, and the two first threaded sleeves are respectively fixedly connected to the bottom of the second clamping plate and the third clamping plate.

[0014] Preferably, the processing assembly further includes a first movable plate slidably connected to the movable frame and a second movable plate slidably connected to the first movable plate. The movable frame is slidably connected to the mounting frame, and a movable block is fixedly connected to the movable frame. The mounting frame has a movable groove adapted to the size of the movable block. A second electric push rod is fixedly connected to the mounting frame, and the extended end of the second electric push rod is fixedly connected to the movable frame. The laser engraving machine is fixedly connected to the second movable plate, and the first movable plate and the second movable plate are vertically arranged in the vertical projection direction.

[0015] Preferably, a second slider is fixedly connected to the bottom of the first movable plate, a second slide groove adapted to the size of the second slider is provided on the movable frame, a second screw is rotatably connected to the movable frame, a second screw sleeve is connected to the second screw through a ball screw pair thread, the second screw sleeve is fixedly connected to the first movable plate, and a second motor for driving the second screw to rotate is fixedly connected to the movable frame.

[0016] Preferably, a third slider is fixedly connected to the bottom of the second movable plate, a third slide groove adapted to the size of the third slider is provided on the first movable plate, a third screw is rotatably connected to the first movable plate, a third screw sleeve is connected to the third screw through a ball screw pair thread, the third screw sleeve is fixedly connected to the second movable plate, and a third motor for driving the third screw to rotate is fixedly connected to the first movable plate.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] 1. This utility model achieves simultaneous laser engraving on both sides of the PCB board by mirroring the processing components on both sides of the mounting frame, and cooperating with the bidirectional adjustable second clamping plate, third clamping plate and liftable first clamping plate in the clamping assembly. This eliminates the need for flipping, avoids the time wasted due to repeated positioning and alignment, shortens the processing cycle of a single product, and greatly improves production efficiency.

[0020] 2. This utility model adopts a three-level motion control system consisting of a vertically lifting movable frame and a horizontally moving first movable plate and a second movable plate, forming a three-axis linkage structure. At the same time, the bidirectional adjustable clamping plate spacing in the clamping assembly, combined with the clamping groove design, can adaptively clamp PCB boards of different sizes, avoiding the compatibility limitations caused by the fixed size of traditional clamps. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the clamping assembly of this utility model;

[0023] Figure 3 This is an exploded view of the bidirectional screw of this utility model;

[0024] Figure 4 This is a schematic diagram of the processing components of this utility model;

[0025] Figure 5 This is an exploded view of the processing components of this utility model.

[0026] The following are the labeling instructions in the diagram: 1. Base; 101. Mounting bracket; 2. Clamping assembly; 21. First electric push rod; 22. First clamping plate; 23. Second clamping plate; 24. Third clamping plate; 25. Bidirectional screw; 26. First threaded sleeve; 27. First motor; 28. First slider; 29. ​​First slide groove; 210. Clamping groove; 3. Processing assembly; 31. Second electric push rod; 32. Movable frame; 321. Movable block; 322. Movable groove; 33. First movable plate; 34. Second screw; 35. Second threaded sleeve; 36. Second motor; 37. Second slider; 38. Second slide groove; 39. Second movable plate; 310. Third screw; 311. Third threaded sleeve; 312. Third motor; 313. Third slider; 314. Third slide groove; 315. Laser engraving machine. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please see Figure 1-5 This utility model provides a technical solution:

[0031] A double-sided laser engraving device for PCB boards includes a base 1 and a mounting bracket 101 fixedly connected to the base 1. A clamping assembly 2 is disposed on the top of the mounting bracket 101, and processing assemblies 3 are mirror-mounted on both sides of the mounting bracket 101. The clamping assembly 2 includes a first clamping plate 22 capable of vertical movement, and a second clamping plate 23 and a third clamping plate 24 capable of relative movement. Clamping slots 210 are provided on the first clamping plate 22, the second clamping plate 23, and the third clamping plate 24. The clamping assembly 2 is used to clamp PCB boards of different sizes for processing. The processing assembly 3 includes a movable component capable of vertical movement. The frame 32 and the laser engraving machine 315, which can change the horizontal position on the movable frame 32, are used to perform laser engraving on both sides of the PCB board at the same time. With this setting, the mirror processing components 3 on both sides of the mounting frame 101 form a symmetrical laser engraving station, realizing synchronous processing of the front and back sides. The first clamping plate 22, which moves up and down in the three-way clamping component 2, works in coordination with the second and third clamping plates 24, which move horizontally in opposite directions, so that the clamping groove 210 forms a fixed space with an adaptive size, ensuring that various PCB boards are stably clamped and the front and back sides are fully exposed, eliminating the problem of repeated positioning caused by flipping in traditional processing.

[0032] Secondly, a first electric push rod 21 is fixedly connected to the bottom of the mounting bracket 101. The extended end of the first electric push rod 21 is fixedly connected to the bottom of the first clamping plate 22. With this configuration, the first electric push rod 21 provides a stable driving force to drive the first clamping plate 22 to move vertically. In conjunction with the sliding constraint structure of the movable block 321 and the movable groove 322, it is ensured that the first clamping plate 22 has no horizontal displacement during the pressing process, thus ensuring the stability of the PCB board during processing.

[0033] Furthermore, both the second clamping plate 23 and the third clamping plate 24 are slidably connected to the top of the mounting frame 101 via the first slider 28. The top of the mounting frame 101 is provided with a first groove 29 that matches the size of the first slider 28. A first motor 27 is fixedly connected to the top of the mounting frame 101. The output end of the first motor 27 is fixedly connected to a bidirectional screw 25 for driving the second clamping plate 23 and the third clamping plate 24 to move closer or further apart. With this configuration, the bidirectional screw 25 driven by the first motor 27 drives the clamping plates on both sides to move synchronously in opposite directions along the first groove 29 via a ball screw pair, so that the clamping distance is automatically adjusted according to the PCB width. Combined with the guiding design of the first groove 29 and the first slider 28, the positioning error caused by mechanical clearance is reduced, ensuring that PCBs of different sizes are always in the central symmetrical position of the processing area.

[0034] Furthermore, the threads at both ends of the bidirectional screw 25 are reversed, and both ends of the bidirectional screw 25 are connected to the first screw sleeve 26 through the ball screw pair thread. The two first screw sleeves 26 are fixedly connected to the bottom of the second clamping plate 23 and the third clamping plate 24, respectively. With this configuration, through the reverse threads and the ball screw pair transmission structure, a single rotation of the bidirectional screw 25 can drive the two first screw sleeves 26 to move the second clamping plate 23 and the third clamping plate 24 in opposite directions at equal distances. This simplifies the drive mechanism, improves adjustment efficiency, and also ensures balanced force on the PCB board.

[0035] In addition, the processing component 3 also includes a first movable plate 33 slidably connected to the movable frame 32 and a second movable plate 39 slidably connected to the first movable plate 33. The movable frame 32 is slidably connected to the mounting frame 101. A movable block 321 is fixedly connected to the movable frame 32. The mounting frame 101 has a movable groove 322 that matches the size of the movable block 321. A second electric push rod 31 is fixedly connected to the mounting frame 101. The extended end of the second electric push rod 31 is fixedly connected to the movable frame 32. The laser engraving machine 315 is fixedly connected to the second movable plate 39. The first movable plate 33 and the second movable plate 39 are vertically arranged in the vertical projection direction. In this arrangement, the first movable plate 33 and the second movable plate 39 form a vertical cross layout in the projection direction, so that the laser engraving machine 315 fixed on the second movable plate 39 has longitudinal and lateral displacement capabilities. Combined with the vertical lifting of the movable frame 32 driven by the second electric push rod 31, a three-degree-of-freedom motion platform is formed, which can meet more diverse laser engraving processing needs.

[0036] Furthermore, a second slider 37 is fixedly connected to the bottom of the first movable plate 33. A second slide groove 38 adapted to the size of the second slider 37 is provided on the movable frame 32. A second screw 34 is rotatably connected to the movable frame 32. A second screw sleeve 35 is threadedly connected to the second screw 34 through a ball screw pair. The second screw sleeve 35 is fixedly connected to the first movable plate 33. A second motor 36 for driving the second screw 34 to rotate is fixedly connected to the movable frame 32. With this configuration, the second motor 36 drives the second screw 34 to rotate, and the rotational motion is converted into linear displacement of the second screw sleeve 35 through the ball screw pair, which drives the first movable plate 33 to move longitudinally along the second slide groove 38.

[0037] Specifically, a third slider 313 is fixedly connected to the bottom of the second movable plate 39. A third groove 314 adapted to the size of the third slider 313 is provided on the first movable plate 33. A third screw 310 is rotatably connected to the first movable plate 33. A third screw sleeve 311 is connected to the third screw 310 through a ball screw thread. The third screw sleeve 311 is fixedly connected to the second movable plate 39. A third motor 312 for driving the third screw 310 to rotate is fixedly connected to the first movable plate 33. With this configuration, the third motor 312 drives the third screw 310 to move the third screw sleeve 311 horizontally, so that the second movable plate 39 moves laterally along the third groove 314. The tight fit between the third slider 313 and the third groove 314 further maintains stability and prevents vibration and displacement caused by the high-speed movement of the laser engraving machine 315.

[0038] It should be noted that the motion control technology of motors and electric linear actuators is a conventional method known in the field. Its function of achieving precise positioning through preset parameters is based on the mature electromechanical conversion principle. Such technology has been widely used in the industrial field for decades, and its control logic has been fully verified by international standards and publicly available technical documents from leading companies in the industry. Therefore, the engineering implementation of motors and electric linear actuators is a common skill for those skilled in the art, rather than the core innovation of this solution. They are merely basic execution units serving the overall functional requirements of the device.

[0039] Working principle:

[0040] After the device is started, the PCB board is first self-adaptively fixed by the clamping assembly 2. The operator places the PCB board between the second clamping plate 23 and the third clamping plate 24. The first motor 27 drives the bidirectional screw 25 to rotate, so that the second clamping plate 23 and the third clamping plate 24 slide towards each other or away from each other, thereby adjusting the horizontal clamping distance according to the PCB width. Subsequently, the first electric push rod 21 pushes the first clamping plate 22 to move, so that the PCB board is embedded in the clamping groove 210 on three sides, forming a stable clamping with the front and back sides fully exposed. After the clamping is completed, the processing assembly 3 starts synchronously, and the movable frame 32 is driven by the second electric push rod 31 to adjust to the preset height, so that the focusing lens of the laser engraving machine 315 on both sides maintains the optimal working distance with the PCB board surface. At this time, the second motor 36 drives the second screw 34 to rotate, and the rotational motion is converted into the linear displacement of the second screw sleeve 35 through the ball screw pair, which drives the first movable plate 33 to move longitudinally. At the same time, the third motor 312 drives the third screw 310 to rotate, so that the third screw sleeve 311 drives the second movable plate 39 to move laterally, thereby realizing the precise positioning of the laser engraving machine 315 on the PCB board surface.

[0041] The laser engraving process is executed synchronously by laser engraving machines 315 set up on both sides in a mirror configuration. The fiber laser on the laser engraving machine 315 generates a high-energy laser beam, which vaporizes or chemically reacts on the surface of the PCB board through photothermal effect, forming markings such as text or patterns. During this process, the three-axis linkage system controls the movement trajectory of the laser according to a preset program. The dual-station design allows the laser engraving tasks on both sides of the PCB board to be completed simultaneously in one clamping, improving processing efficiency.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided laser engraving device for PCB boards, characterized in that: It includes a base (1) and a mounting bracket (101) fixedly connected to the base (1). A clamping assembly (2) is provided on the top of the mounting bracket (101), and a processing assembly (3) is provided on both sides of the mounting bracket (101). The clamping assembly (2) includes a first clamping plate (22) that can move up and down, and a second clamping plate (23) and a third clamping plate (24) that can move relative to each other. The first clamping plate (22), the second clamping plate (23) and the third clamping plate (24) are all provided with clamping grooves (210). The clamping assembly (2) is used to clamp PCBs of different sizes for processing. The processing component (3) includes a movable frame (32) that can move up and down and a laser engraving machine (315) that can change its horizontal position on the movable frame (32). The processing component (3) is used to perform laser engraving on both sides of the PCB board at the same time.

2. The double-sided laser engraving device for PCB boards as described in claim 1, characterized in that: The bottom of the mounting bracket (101) is fixedly connected to a first electric push rod (21), and the extended end of the first electric push rod (21) is fixedly connected to the bottom of the first clamping plate (22).

3. The double-sided laser engraving device for PCB boards as described in claim 2, characterized in that: The second clamping plate (23) and the third clamping plate (24) are slidably connected to the top of the mounting frame (101) via the first slider (28). The top of the mounting frame (101) is provided with a first groove (29) that matches the size of the first slider (28). The top of the mounting frame (101) is fixedly connected to a first motor (27). The output end of the first motor (27) is fixedly connected to a bidirectional screw (25) for driving the second clamping plate (23) and the third clamping plate (24) to move closer to or further away from each other.

4. The double-sided laser engraving device for PCB boards as described in claim 3, characterized in that: The threads at both ends of the bidirectional screw (25) are reversed, and both ends of the bidirectional screw (25) are connected to a first screw sleeve (26) through a ball screw pair thread. The two first screw sleeves (26) are fixedly connected to the bottom of the second clamping plate (23) and the third clamping plate (24) respectively.

5. The double-sided laser engraving device for PCB boards as described in claim 1, characterized in that: The processing component (3) further includes a first movable plate (33) slidably connected to the movable frame (32) and a second movable plate (39) slidably connected to the first movable plate (33). The movable frame (32) is slidably connected to the mounting frame (101). A movable block (321) is fixedly connected to the movable frame (32). An movable groove (322) adapted to the size of the movable block (321) is opened on the mounting frame (101). A second electric push rod (31) is fixedly connected to the mounting frame (101). The extended end of the second electric push rod (31) is fixedly connected to the movable frame (32). The laser engraving machine (315) is fixedly connected to the second movable plate (39). The first movable plate (33) and the second movable plate (39) are vertically arranged in the vertical projection direction.

6. The double-sided laser engraving device for PCB boards as described in claim 5, characterized in that: The bottom of the first movable plate (33) is fixedly connected to a second slider (37). The movable frame (32) is provided with a second slide groove (38) that matches the size of the second slider (37). The movable frame (32) is rotatably connected to a second screw (34). The second screw (34) is connected to a second screw sleeve (35) through a ball screw pair thread. The second screw sleeve (35) is fixedly connected to the first movable plate (33). The movable frame (32) is fixedly connected to a second motor (36) for driving the second screw (34) to rotate.

7. The double-sided laser engraving device for PCB boards as described in claim 5, characterized in that: The bottom of the second movable plate (39) is fixedly connected to a third slider (313). The first movable plate (33) is provided with a third groove (314) that matches the size of the third slider (313). The first movable plate (33) is rotatably connected to a third screw (310). The third screw (310) is connected to a third screw sleeve (311) through a ball screw pair thread. The third screw sleeve (311) is fixedly connected to the second movable plate (39). The first movable plate (33) is fixedly connected to a third motor (312) for driving the third screw (310) to rotate.

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