Laser marking device for circuit board

Abstract

The utility model relates to a laser marking device for a circuit board, and relates to the technical field of circuit board processing, the laser marking device comprises a workbench, a connecting support is fixedly mounted on the workbench, a carrier is slidably mounted on the connecting support, a placing groove for placing the circuit board is formed in the carrier, and a limiting mechanism for limiting the carrier is mounted on the carrier; the induction mechanism is used for placing the circuit board on the carrier frame and outputting a trigger signal when the circuit board moves to a set position; the signal input end of the single-chip microcomputer is in signal connection with the signal output end of the induction mechanism, and the single-chip microcomputer is used for identifying the trigger signal and outputting a control signal; the signal output end of the single-chip microcomputer is in signal connection with the signal input end of the laser marking head, and the laser marking head receives the control signal and is started. According to the laser marking device, the convenience of using the laser marking device by a user can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit board processing technology, in particular to a laser marking device for circuit board. BACKGROUND

[0002] PCB (Printed Circuit Board), Chinese name is printed circuit board, also known as printed wiring board, is an important electronic component, is the support of electronic components, is the carrier of electrical interconnection of electronic components. Since it is made by electronic printing, it is called "printed" circuit board.

[0003] In the process of processing the circuit board, it is necessary to mark the processing date, circuit board model and other information on the circuit board. In the prior art, laser marking device is used to implant and mark the processing date and circuit board model on the circuit board.

[0004] Among them, the common laser marking device for circuit board processing mainly includes a processing table, a mounting bracket is fixedly installed on the processing table through screws, a laser marking head is fixedly installed on the mounting bracket, and the laser marking head is erected above the processing table. The user places the circuit board to be marked on the processing table, and then starts the laser marking head to mark the circuit board.

[0005] However, in order to ensure the accuracy of the marking position of the laser marking head, the user needs to place the marking position of the circuit board directly below the laser marking head before marking the circuit board, and needs to manually start the laser marking head after placing the circuit board, which is not convenient to use and needs to be improved. INVENTION CONTENTS

[0006] In order to improve the convenience of the user using the laser marking device to mark the circuit board, the present application provides a laser marking device for circuit board.

[0007] The laser marking device for circuit board provided by the present application adopts the following technical scheme:

[0008] A laser marking device for circuit board mainly comprises a workbench, a connecting bracket is fixedly installed on the workbench, a carrier is slidably installed on the connecting bracket, a placing groove for placing a circuit board is formed on the carrier, and a limiting mechanism for limiting the carrier is installed on the carrier.

[0009] And an induction mechanism is used to output a trigger signal when the circuit board is placed on the carrier and moves to a set position; a single-chip microcomputer is signal connected with the signal output end of the induction mechanism, used to identify the trigger signal and output a control signal;

[0010] The signal output end of the single-chip microcomputer is connected with the signal input end of the laser marking head, and the laser marking head receives the control signal and starts.

[0011] By adopting the above technical scheme, when the user uses the laser marking device to mark the circuit board, the user can pull the carrier to slide out of the connecting support, then place the circuit board in the placing groove of the carrier, and then push the carrier to slide into the connecting support again. During the process of pushing the carrier to slide into the connecting support, the sensing mechanism detects the position of the carrier and the circuit board in real time. When the circuit board on the carrier slides to the set position, the single-chip microcomputer controls the laser marking head to start, and automatically marks the circuit board on the carrier. The user does not need to correct the position of the circuit board, which can improve the convenience of using the laser marking device and improve the accuracy of marking on the circuit board.

[0012] Preferably, the connecting support comprises two support frames arranged in parallel, and the bottoms of the two support frames are fixedly installed on the workbench.

[0013] The two support frames each comprise a support plate, and the two support plates are arranged above the workbench, and the two sides of the carrier are respectively slidably arranged on the two support plates.

[0014] The two sides of the carrier are respectively fixedly installed with mounting rods, and the two support plates are respectively provided with avoiding grooves along the axial direction for the mounting rods to extend out.

[0015] The carrier is fixedly installed with a pull rod.

[0016] By adopting the above technical scheme, the mounting rods on the carrier and the avoiding grooves on the support plates are arranged to achieve the technical effect of sliding connection between the carrier and the connecting support.

[0017] Preferably, the limiting mechanism comprises anti-dropping plates fixedly installed on the support plates, and the two anti-dropping plates are arranged above the two support plates, and the anti-dropping plates and the support plates are respectively formed with sliding grooves for the two sides of the carrier to slide.

[0018] By adopting the above technical scheme, the anti-dropping plates are arranged above the carrier to limit the upper surfaces of the two sides of the carrier, so that the anti-dropping plates can reduce the situation of the carrier falling off from the connecting support during sliding.

[0019] Preferably, the two ends of the two support frames are respectively fixedly installed with two support columns, the bottoms of the two support columns are fixedly connected with the workbench, and a limiting rod is fixedly installed between the two support columns, and the end of the mounting rod is provided with a sliding hole matched with the limiting rod, and the end of the mounting rod is slidably arranged on the limiting rod.

[0020] By adopting the technical scheme, the sliding hole at the end of the mounting rod is arranged to slide on the limiting rod, so that the mounting rod at the bottom of the carrier slides along the axial direction of the limiting rod, and the stability of the carrier sliding is improved.

[0021] Preferably, the carrier is provided with openings at the front and rear ends thereof for taking and placing the circuit board.

[0022] By adopting the technical scheme, the openings at the front and rear ends of the carrier can facilitate the operator to hold the front and rear ends of the circuit board with both hands to take and place the circuit board.

[0023] Preferably, the sensing mechanism comprises:

[0024] The infrared transmitting-receiving sensor comprises infrared transmitting ends and infrared receiving ends arranged on both sides of the mounting rod, and is configured to output a first high-level signal when the mounting rod blocks the infrared transmitting ends and the infrared receiving ends.

[0025] The ultrasonic ranging sensor is fixedly arranged on the workbench, and a sensing end thereof is arranged upward, and is configured to output a second high-level signal when the circuit board blocks the sensing end.

[0026] The AND gate chip is signal-connected with the signal output ends of the infrared transmitting-receiving sensor and the ultrasonic ranging sensor, and is signal-connected with the signal input end of the single-chip microcomputer, and is configured to simultaneously receive the first high-level signal and the second high-level signal and output the trigger signal.

[0027] By adopting the technical scheme, when the operator places the circuit board on the carrier and pushes the carrier to slide into the connecting bracket, when the mounting rod slides to between the infrared transmitting ends and the infrared receiving ends of the infrared transmitting-receiving sensor and the circuit board blocks the sensing end of the ultrasonic ranging sensor, the infrared rays emitted by the infrared transmitting ends cannot be received by the infrared receiving ends, the infrared transmitting-receiving sensor outputs the first high-level signal, the distance measured by the ultrasonic ranging sensor is less than the set value, the ultrasonic ranging sensor outputs the second high-level signal, the AND gate chip simultaneously receives the first high-level signal and the second high-level signal and outputs the trigger signal, the single-chip microcomputer identifies the trigger signal to determine that the circuit board moves to the set position, the region of the laser marking on the circuit board is located directly below the laser marking head, and the single-chip microcomputer controls the laser marking head to start, thereby achieving the technical effect of automatically starting the laser marking head.

[0028] In summary, the laser marking device for the circuit board has at least one of the following beneficial technical effects:

[0029] 1. When the user uses the laser marking device to mark the circuit board, the user can pull the carrier, so that the carrier slides out of the connecting support, then places the circuit board in the placing groove of the carrier, and then pushes the carrier to slide into the connecting support; during the process that the user pushes the carrier to slide into the connecting support, the sensing mechanism detects the position of the carrier and the circuit board in real time, when the circuit board on the carrier slides to the set position, the single-chip microcomputer controls the laser marking head to start, and automatically marks the circuit board on the carrier, without the user correcting the position of the circuit board, which can improve the convenience of the user using the laser marking device and improve the accuracy of marking on the circuit board;

[0030] 2. When the operator places the circuit board on the carrier and pushes the carrier to slide into the connecting support, when the mounting rod slides between the infrared emitting end and the infrared receiving end of the infrared reflection sensor, and the circuit board is shielded above the ultrasonic ranging sensor, the infrared emitted by the infrared emitting end cannot be received by the infrared receiving end, the infrared reflection sensor outputs a first high-level signal; the distance measured by the ultrasonic ranging sensor is less than the set value, the ultrasonic ranging sensor outputs a second high-level signal, after the gate chip receives the first high-level signal and the second high-level signal at the same time, a trigger signal can be output, the single-chip microcomputer can determine that the circuit board moves to the set position by recognizing the trigger signal, the area of the laser marking on the circuit board is located directly below the laser marking head, the single-chip microcomputer controls the laser marking head to start, which can realize the technical effect of automatically starting the laser marking head. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram for showing the overall structure of the laser marking device.

[0032] Figure 2 is a schematic diagram for showing the connection relationship between the connecting support and the carrier.

[0033] Figure 3 is a schematic diagram for showing the position relationship of the mounting rod.

[0034] Figure 4 is a schematic diagram for showing the internal signal transmission of the laser marking device.

[0035] Explanation of reference signs: 1, workbench; 2, connecting support; 21, support frame; 211, support plate; 212, avoiding groove; 22, anti-dropping plate; 23, support column; 24, limiting rod; 3, carrier; 31, placing groove; 32, mounting rod; 321, sliding hole; 33, pull rod; 34, opening; 4, sensing mechanism; 41, infrared reflection sensor; 411, infrared emitting end; 412, infrared receiving end; 42, ultrasonic ranging sensor; 5, laser marking head. DETAILED DESCRIPTION

[0036] The application will be further described in detail below with reference to the accompanying drawings. Figure 1 The application will be further described in detail below with reference to the accompanying drawings.

[0037] EMBODIMENT

[0038] The embodiment of the application discloses a laser marking device for a circuit board. Figure 1 Figure 4 The laser marking device mainly comprises a workbench 1, and a connecting support 2 fixedly installed on the workbench 1. The connecting support 2 is located directly below a laser marking head 5, and a carrier 3 is slidably installed on the connecting support 2. The carrier 3 is provided with a placing groove 31 for placing the circuit board, and a limiting mechanism for limiting the carrier 3 is installed on the carrier 3.

[0039] The laser marking device further comprises an induction mechanism 4 for outputting a trigger signal when the circuit board is placed on the carrier 3 and moves to a set position, a single-chip microcomputer connected with the induction mechanism 4 in signal mode and used for identifying the trigger signal and outputting a control signal, and the single-chip microcomputer is connected with the laser marking head 5 in signal mode, and the laser marking head 5 receives the control signal and starts.

[0040] When a user uses the laser marking device to mark the circuit board, the user can pull the carrier 3 out of the connecting support 2, then place the circuit board in the placing groove 31 of the carrier 3, and then push the carrier 3 into the connecting support 2 again. During the process that the user pushes the carrier 3 into the connecting support 2, the induction mechanism 4 detects the positions of the carrier 3 and the circuit board in real time, and when the circuit board on the carrier 3 slides to the set position, the single-chip microcomputer controls the laser marking head 5 to start, so that the circuit board on the carrier 3 is automatically marked, and the user does not need to correct the position of the circuit board, the convenience of using the laser marking device is improved, and the accuracy of marking on the circuit board is improved.

[0041] The laser marking device mainly comprises a workbench 1, and a connecting support 2 fixedly installed on the workbench 1. The connecting support 2 is located directly below a laser marking head 5, and a carrier 3 is slidably installed on the connecting support 2. The carrier 3 is provided with a placing groove 31 for placing the circuit board, and a limiting mechanism for limiting the carrier 3 is installed on the carrier 3. Figure 2 The laser marking device mainly comprises a workbench 1, and a connecting support 2 fixedly installed on the workbench 1. The connecting support 2 is located directly below a laser marking head 5, and a carrier 3 is slidably installed on the connecting support 2. The carrier 3 is provided with a placing groove 31 for placing the circuit board, and a limiting mechanism for limiting the carrier 3 is installed on the carrier 3. Figure 3 The laser marking device mainly comprises a workbench 1, and a connecting support 2 fixedly installed on the workbench 1. The connecting support 2 is located directly below a laser marking head 5, and a carrier 3 is slidably installed on the connecting support 2. The carrier 3 is provided with a placing groove 31 for placing the circuit board, and a limiting mechanism for limiting the carrier 3 is installed on the carrier 3.

[0042] ​The mounting rods 32 on the carrier 3 and the avoidance grooves 212 on the support plate 211 provide a sliding connection between the carrier 3 and the connecting bracket 2. Furthermore, the pull rods 33 on the carrier 3 facilitate pulling the carrier 3 to slide it into or out of the connecting bracket 2.

[0043] Reference Figure 2 and Figure 3 The limiting mechanism includes anti-slip plates 22 respectively fixedly mounted on the support plates 211. The two anti-slip plates 22 are respectively mounted above the two support plates 211, and sliding grooves for sliding on both sides of the carrier 3 are formed between the anti-slip plates 22 and the support plates 211.

[0044] The anti-slip plate 22 blocks the upper portion of the carrier 3 and limits the upper surfaces of both sides of the carrier 3 , thereby reducing the possibility of the carrier 3 falling off the connecting bracket 2 during the sliding process.

[0045] It should be noted that in the embodiment of the present application, the two anti-slip plates 22 extend inward, and the width of the two anti-slip plates 22 extending above the two sides of the placement groove 31 is 0.5 mm, which can limit the two sides of the circuit board placed in the placement groove 31.

[0046] Reference Figure 2 and Figure 3 Two pillars 23 are fixedly installed at the bottom of both ends of the two support frames 21. The bottoms of the two pillars 23 are fixedly connected to the workbench 1, and a limit rod 24 is fixedly installed between the two pillars 23. The end of the mounting rod 32 is provided with a sliding hole 321 adapted to the limit rod 24, and the end of the mounting rod 32 is slidably set on the limit rod 24.

[0047] The sliding hole 321 at the end of the mounting rod 32 is slidably arranged on the limiting rod 24 , so that the mounting rod 32 at the bottom of the carrier 3 can slide along the axial direction of the limiting rod 24 , thereby improving the sliding stability of the carrier 3 .

[0048] Reference Figure 2 , openings 34 for taking and placing circuit boards are respectively provided at the front and rear ends of the carrier 3. The openings 34 at the front and rear ends of the carrier 3 can facilitate the operator to hold the front and rear ends of the circuit board with both hands to take and place the circuit board.

[0049] Reference Figure 2 、 Figure 3 as well as Figure 4, the sensing mechanism 4 comprises: an infrared reflection sensor 41, comprising an infrared emitting end 411 and an infrared receiving end 412 located on both sides of the mounting rod 32, for outputting a first high-level signal when the mounting rod 32 blocks between the infrared emitting end 411 and the infrared receiving end 412; an ultrasonic ranging sensor 42 fixedly installed on the workbench 1, with the sensing end upwardly arranged, for outputting a second high-level signal when the circuit board is blocked above; a gate chip, with the signal input end connected with the signal output ends of the infrared reflection sensor 41 and the ultrasonic ranging sensor 42, and the signal output end connected with the signal input end of the single-chip microcomputer, for simultaneously receiving the first high-level signal and the second high-level signal and outputting a trigger signal.

[0050] When the operator places the circuit board on the carrier 3 and pushes the carrier 3 to make the carrier 3 slide into the connecting support 2, when the mounting rod 32 slides to between the infrared emitting end 411 and the infrared receiving end 412 of the infrared reflection sensor 41, and the circuit board is blocked above the ultrasonic ranging sensor 42, the infrared emitted by the infrared emitting end 411 cannot be received by the infrared receiving end 412, the infrared reflection sensor 41 outputs the first high-level signal; the distance measured by the ultrasonic ranging sensor 42 is less than the set value, the ultrasonic ranging sensor 42 outputs the second high-level signal, the gate chip simultaneously receives the first high-level signal and the second high-level signal and outputs the trigger signal, the single-chip microcomputer recognizes the trigger signal to determine that the circuit board moves to the set position, the region of the laser marking on the circuit board is located directly below the laser marking head 5, the single-chip microcomputer controls the laser marking head 5 to start, and the technical effect of automatically starting the laser marking head 5 can be achieved.

[0051] The implementation principle of the laser marking device for the circuit board in the embodiment of the application is as follows: when the user uses the laser marking device to mark the circuit board, the user can pull the carrier 3 to make the carrier 3 slide out of the connecting support 2, then place the circuit board in the placing groove 31 of the carrier 3, and then push the carrier 3 to slide into the connecting support 2 again; in the process of pushing the carrier 3 to make the carrier 3 slide into the connecting support 2, the sensing mechanism 4 detects the positions of the carrier 3 and the circuit board in real time, when the circuit board on the carrier 3 slides to the set position, the single-chip microcomputer controls the laser marking head 5 to start, and automatically marks the circuit board on the carrier 3, without the need for the user to correct the position of the circuit board, which can improve the convenience of the user using the laser marking device and improve the accuracy of marking and printing on the circuit board.

[0052] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application shall be covered within the protection scope of the application.

Claims

1. A laser marking device for a circuit board, characterized by comprising: The utility model provides a circuit board laser marking device, including workbench (1), the workbench (1) is fixedly installed with connecting support (2), the connecting support (2) is slidably installed with carrier (3), the carrier (3) is opened with the placement slot (31) for placing circuit board, and is installed with the limiting mechanism for limiting the carrier (3) on the carrier (3); Induction mechanism (4) is used for outputting trigger signal when circuit board is placed on the carrier (3) and circuit board moves to the set position; Single-chip microcomputer, signal input end is connected with the signal output end of induction mechanism (4) signal, is used for identifying the trigger signal and outputting control signal; The signal output end of single-chip microcomputer is connected with the signal input end of laser marking head (5) signal, and laser marking head (5) receives the control signal and starts.

2. The laser marking apparatus for a circuit board according to claim 1, wherein The connecting support (2) includes two support frames (21) arranged in parallel, the bottoms of the two support frames (21) are fixedly installed on the workbench (1); The two support frames (21) each include a support plate (211), and the two support plates (211) are each erected above the workbench (1), and the two sides of the carrier (3) are each slidably arranged on the two support plates (211); The two sides of the carrier (3) are each fixedly installed with an installation rod (32), and the two support plates (211) are each axially and perpendicularly provided with an avoiding slot (212) for the installation rod (32) to extend out of; The carrier (3) is fixedly installed with a pull rod (33).

3. The laser marking apparatus for a circuit board according to claim 2, wherein The limiting mechanism includes two anti-dropping plates (22) each fixedly installed on the support plate (211), the two anti-dropping plates (22) are each erected above the two support plates (211), and the anti-dropping plates (22) and the support plates (211) are each formed with a sliding groove for the two sides of the carrier (3) to slide.

4. The laser marking apparatus for a circuit board according to claim 3, wherein The two ends of the two support frames (21) are each fixedly installed with two support columns (23), the bottoms of the two support columns (23) are each fixedly connected with the workbench (1), and a limiting rod (24) is fixedly installed between the two support columns (23), the end of the installation rod (32) is provided with a sliding hole (321) matched with the limiting rod (24), and the end of the installation rod (32) is slidably arranged on the limiting rod (24).

5. The laser marking apparatus for a circuit board according to claim 4, wherein The carrier (3) is provided with an opening (34) at each of the front and rear ends for taking and placing a circuit board.

6. The laser marking apparatus for a circuit board according to claim 5, wherein The induction mechanism (4) includes: An infrared transmitting-receiving sensor (41) includes an infrared emitter (411) and an infrared receiver (412) arranged on the two sides of the installation rod (32), and is used for outputting a first high-level signal when the installation rod (32) blocks the infrared emitter (411) and the infrared receiver (412); An ultrasonic ranging sensor (42) is fixedly installed on the workbench (1) with an inductive end upward, and is used for outputting a second high-level signal when a circuit board blocks the inductive end; The signal output end of the infrared opposite radiation sensor (41) and the signal output end of the ultrasonic distance measuring sensor (42) are signal connected with the signal input end of the AND gate chip, and the signal output end is signal connected with the signal input end of the single-chip microcomputer, for simultaneously receiving the first high-level signal and the second high-level signal and outputting the trigger signal.

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