A circuit board marking machine

Abstract

This invention relates to the field of circuit board manufacturing technology, and more particularly to a circuit board marking machine. It includes a table fixed to a frame, with a feeding belt on one side above the table. The feeding belt is driven to rotate by a feeding motor. A conveying device is also installed on the table on one side of the feeding belt. The conveying device includes a lead screw and multiple sliding rods mounted above the table. The lead screw is driven to rotate by a positioning motor. A support plate is also installed above the table, with a threaded tube and a sliding tube fixed to the support plate. The lead screw passes through the threaded tube and is threadedly connected to it. The sliding rods pass through the sliding tube and are slidably connected to it. Multiple lifting cylinders are fixed to the support plate, and a fixed plate is installed above the support plate. The piston rod ends of the lifting cylinders are all fixed to the fixed plate. A rotary motor is also fixed to the fixed plate. This device can perform marking operations on circuit boards and can prevent components on the circuit boards from being damaged by high-temperature burning.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing technology, and in particular to a circuit board marking machine. Background Technology

[0002] Laser marking uses a laser beam to create permanent marks on the surfaces of various materials. The marking effect is achieved by evaporating the surface material to expose the deeper material, by causing chemical and physical changes in the surface material through light energy to "etch" a mark, or by burning away part of the material with light energy to reveal the desired pattern or text.

[0003] Patent application number CN201822107723.8 discloses a laser marking device for a circuit board production line, including a laser marking machine and a circuit board. The circuit board is placed on a roller conveyor line. The laser marking machine is fixed on a frame, and a support for the conveyor belt is fixed in the frame. The laser marking machine is located directly above the conveyor belt, with the output end of the roller conveyor line facing the input end of the conveyor belt. The conveyor belt is driven by a conveyor belt motor. A traveling wheel is installed at the lower end of an inverted U-shaped marking support, pressing against a traveling track. The conveyor belt is located in the marking support. The top of the marking support has an opening opposite to the laser marking machine. Clamping cylinders are fixed on both sides of the marking support, facing each other. A clamping plate is fixed on the piston rod of each clamping cylinder, and a clamping flexible plate is fixed on the clamping plate. The circuit board is clamped between two opposing clamping flexible plates. The moving cylinder is fixed on the frame, and the piston rod of the moving cylinder is fixed together with the marking bracket. When marking the circuit board, the piston rod of the clamping cylinder extends to clamp the circuit board at the left end of the conveyor belt. Then, under the control of the control cabinet, the moving cylinder pulls the circuit board at the left end of the conveyor belt to the middle of the conveyor belt. After that, the laser marking machine performs laser marking on the circuit board. However, this type of laser marking device cannot perform positioning marking on flexible circuit boards. Due to the thinness and bendability of the flexible circuit board, it is impossible to push and clamp the circuit board from both ends of the flexible circuit board using the clamping cylinder. When one end of the clamping cylinder contacts the circuit board and pushes it, the circuit board will bend and deform, resulting in the marking position not being accurately located directly below the laser marking machine.

[0004] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a circuit board marking machine.

[0006] This invention can be achieved through the following technical solutions: This invention discloses a circuit board marking machine, comprising a table fixed on a frame, a feeding belt on one side above the table, the feeding belt being driven to rotate by a feeding motor, a conveying device on the table on one side of the feeding belt, the conveying device comprising a lead screw and multiple sliding rods mounted above the table, the lead screw being driven to rotate by a positioning motor, a support plate above the table, a threaded tube and a sliding tube fixed on the support plate, the lead screw passing through the threaded tube and threadedly connected to the threaded tube, the sliding rods passing through the sliding tube and slidably connected to the sliding tube, multiple lifting cylinders fixed on the support plate, a fixing plate above the support plate, the piston rod ends of the lifting cylinders being fixed to the fixing plate, a rotary motor fixed on the fixing plate, a connecting plate fixed to the output end of the rotary motor, rotating shafts on both sides above the connecting plate, rotating rollers fixed on the rotating shafts, two of the rotating rollers being connected by a conveyor belt, one of the rotating shafts being fixed to the output end of the conveyor motor, and a laser marking head fixed on the frame above the conveyor belt.

[0007] Preferably, an image acquisition device is also fixed on the frame above the feeding conveyor belt. The image acquisition device converts the captured circuit board into an image signal and transmits it to a dedicated image processing system. Based on pixel distribution and information such as brightness and color, the signal is converted into a digital signal. The image system performs various calculations on these signals to extract the features of the target, thereby confirming the angle and position of the circuit board, thus enabling the adjustment of the circuit board position and achieving precise positioning for marking the circuit board.

[0008] Preferably, a take-up belt is also provided on the platform on one side of the conveyor. The marked circuit boards are conveyed onto the take-up belt and collected after moving along the belt.

[0009] Compared with existing technologies, the present invention has the following advantages: This device can perform marking operations on circuit boards. During the marking process, the circuit boards are fed one by one onto the conveyor belt. The circuit boards are then adjusted according to their angle and position to ensure that the marking position on the circuit board is directly below the laser marking head. This allows for marking of the designated position on the circuit board and avoids damage to the components on the circuit board due to high temperature. Attached Figure Description

[0010] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure from another angle of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; In the diagram: 1. Tabletop; 2. Feeding belt; 3. Feeding motor; 4. Receiving belt; 5. Lead screw; 6. Slide rod; 7. Threaded tube; 8. Slide tube; 9. Positioning motor; 10. Support plate; 11. Lifting cylinder; 12. Fixing plate; 13. Rotary motor; 14. Connecting plate; 15. Rotating shaft; 16. Rotating roller; 17. Conveyor belt; 18. Conveyor motor; 19. Laser marking head; 20. Image acquisition device; Detailed Implementation

[0011] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings: Example

[0012] like Figures 1 to 3As shown, this embodiment discloses a circuit board marking machine, including a table 1 fixed on a frame (not shown). A feeding belt 2 is provided on one side of the table 1, and the feeding belt 2 is driven to rotate by a feeding motor 3. A conveying device is also provided on the table 1 on one side of the feeding belt 2. The conveying device includes a lead screw 5 and multiple sliding rods 6 provided above the table 1. The lead screw 5 is driven to rotate by a positioning motor 9. A support plate 10 is also provided above the table 1. A threaded tube 7 and a sliding tube 8 are fixed on the support plate 10. The lead screw 5 passes through the threaded tube 7 and is threadedly connected to the threaded tube 7. The sliding rods 6 pass through the sliding tube 8 and are threadedly connected to the sliding tube 8. The sliding connection is provided. Multiple lifting cylinders 11 are fixed on the support plate 10. A fixing plate 12 is also provided above the support plate 10. The piston rod ends of the lifting cylinders 11 are all fixed to the fixing plate 12. A rotary motor 13 is also fixed on the fixing plate 12. A connecting plate 14 is fixed to the output end of the rotary motor 13. Rotary shafts 15 are provided on both sides above the connecting plate 14. Rotary rollers 16 are fixed on the rotary shafts 15. The two rotary rollers 16 are connected by a conveyor belt 17. One of the rotary shafts 15 is fixed to the output end of the conveyor motor 18. A laser marking head 19 is also fixed on the frame above the conveyor belt 17. The circuit board to be marked is transported forward via the feeding belt 2. After the circuit board reaches the conveyor belt 17, the lifting cylinder 11 is activated, the piston rod on the lifting cylinder 11 extends, and the conveyor belt 17 rises. The angle of the circuit board is adjusted according to its offset angle. The connecting plate 14 is rotated by the rotary motor 13 to achieve a certain angle rotation of the circuit board with the conveyor belt 17. The circuit board is then positioned. After the circuit board is positioned, its position is adjusted according to its offset distance. The lead screw 5 is rotated a certain number of times by the positioning motor 9. When the lead screw 5 rotates, the support plate 10 moves in the direction of the lead screw 5, thereby adjusting the position of the circuit board. After the angle and position of the circuit board are adjusted, the position to be marked on the circuit board is directly below the laser marking head 19. The laser excites the working material through the pump source, forming a population inversion. The particles oscillate and amplify in the resonant cavity, generating a continuous laser beam. The laser beam acts on the laser marking head 19. On the circuit board, the surface material is vaporized to form corresponding markings, thus marking the circuit board. After marking is completed, the positioning motor 9 drives the lead screw 5 to rotate in the opposite direction, the support plate 10 returns to its initial position, and the rotary motor 13 drives the connecting plate 14 to rotate in the opposite direction, the conveyor belt 17 returns to its initial position, and then the piston rod on the lifting cylinder 11 shortens. After the conveyor belt 17 reaches one side of the feeding belt 2, the conveyor motor 18 drives the conveyor belt 17 to rotate, and the circuit board is collected after moving with the conveyor belt 17. This process is repeated. This device can mark circuit boards. When marking the circuit boards, the circuit boards are transported one by one to the conveyor belt 17 through the feeding belt 2. The circuit boards are adjusted according to their angle and position so that the marking position on the circuit board is directly below the laser marking head 19, thus marking the designated position on the circuit board. This can prevent the components on the circuit board from being burned by high temperature.

[0013] An image acquisition device 20 is fixed on the frame above the feeding belt 2. The image acquisition device 20 converts the captured circuit board image into an image signal and transmits it to a dedicated image processing system. Based on pixel distribution and information such as brightness and color, it converts the image into a digital signal. The image system performs various calculations on these signals to extract the features of the target, thereby confirming the angle and position of the circuit board, thus realizing the adjustment of the circuit board position and achieving precise positioning for marking the circuit board. Example

[0014] This embodiment discloses a circuit board marking machine. Based on the structure and principle of embodiment 1, this embodiment also provides a receiving belt 4 on the table 1 on one side of the conveying device. The marked circuit boards are conveyed onto the receiving belt 4 and collected after moving along the receiving belt 4.

[0015] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board marking machine characterized by comprising: The system includes a platform fixed to a frame. A feeding belt is installed on one side of the platform, driven by a feeding motor. A conveying device is also installed on the platform on one side of the feeding belt. The conveying device includes a lead screw and multiple sliding rods installed above the platform. The lead screw is driven by a positioning motor. A support plate is also installed above the platform. A threaded tube and a sliding tube are fixed on the support plate. The lead screw passes through the threaded tube and is threadedly connected to it. The sliding rods pass through the sliding tube and are slidably connected to it. Multiple lifting cylinders are fixed on the support plate. A fixing plate is also installed above the support plate. The piston rod ends of the lifting cylinders are fixed to the fixing plate. A rotary motor is also fixed on the fixing plate. A connecting plate is fixed to the output end of the rotary motor. Rotary shafts are installed on both sides above the connecting plate. Rotary rollers are fixed on the rotary shafts. Two of the rotary rollers are connected by a conveyor belt. One of the rotary shafts is fixed to the output end of the conveyor motor. A laser marking head is also fixed on the frame above the conveyor belt.

2. The circuit board marker of claim 1, wherein: An image capturing device is also fixed on the frame above the feeding belt.

3. The circuit board marker of claim 1, wherein: A material receiving belt is also installed on the platform on one side of the conveyor.

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