Rotary device and method for marking front and back surfaces of flexible circuit board

Abstract

The invention relates to the technical field of circuit board production, in particular to a flexible circuit board front and back side marking rotating device and method.The device comprises a supporting frame, a connecting rod, a rotating servo motor, a fixed clamping strip, a first stretching air cylinder, a movable clamping strip and a control base unit, and the supporting frame comprises a first supporting rod and a second supporting rod; one end of each connecting rod is connected with the center point of the corresponding first supporting rod; the rotary servo motors are respectively connected with the other ends of the connecting rods; the fixed clamping strips are fixedly connected with the second supporting rods respectively; one end of the first stretching air cylinder is fixedly connected with the second supporting rod; the movable clamping strips are fixedly connected with the other ends of the first stretching air cylinders correspondingly. The control base unit comprises a first control base and a second control base, and the first control base and the second control base are connected with the two rotary servo motors correspondingly. The marking precision and the product quality can be improved, manual operation is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board production, and in particular to a rotating device and method for marking the front and back surfaces of a flexible circuit board. Background Art

[0002] In the related technologies, flexible circuit boards are widely used in various fields due to their excellent properties such as light weight, thin thickness, and free bending and folding. Marking, as a key link in the production process of flexible circuit boards, aims to provide products with clear, accurate and permanent identification, covering various types of information such as text, symbols, patterns, QR codes or barcodes. These identifications play an indispensable role in product identification, traceability, quality control and market circulation. In the existing technology, double-sided marking of flexible circuit boards of different sizes cannot be completed simultaneously. After marking one side, the side needs to be manually removed, turned over and positioned before marking the second side. This not only greatly increases the labor intensity of the operator, but is also prone to inaccurate positioning due to human factors, resulting in marking position deviation, seriously affecting the marking accuracy and product quality. As a result, the time and cost of equipment operation are greatly increased, which restricts the improvement of production efficiency.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the Invention

[0004] The main purpose of the embodiments of the present application is to provide a rotating device and method for marking the front and back sides of a flexible circuit board, which can improve marking accuracy and product quality, reduce manual operations, and improve work efficiency.

[0005] To achieve the above objectives, one aspect of an embodiment of the present application provides a rotating device for marking the front and back surfaces of a flexible circuit board, comprising:

[0006] A support frame, the support frame comprising two first support rods and two second support rods, the first support rods and the second support rods being connected;

[0007] Connecting rods, two of which are provided, one end of each connecting rod being connected to the center point of each of the first supporting rods;

[0008] A rotary servo motor, wherein two rotary servo motors are provided and each of the rotary servo motors is connected to the other end of the connecting rod;

[0009] Two fixing clamps are provided, and each fixing clamp is fixedly connected to the second support rod;

[0010] a first stretching cylinder, one end of which is fixedly connected to the second support rod;

[0011] Two movable clamping bars are provided, and each movable clamping bar is fixedly connected to the other end of the first stretching cylinder;

[0012] A control base unit includes a first control base and a second control base, wherein the first control base and the second control base are respectively connected to the two rotary servo motors, and the control base unit is in communication connection with the first stretching cylinder.

[0013] In some embodiments, a safety snap-fit ​​device is also included, which includes two second stretching cylinders and four fixed slots. The two second stretching cylinders are respectively connected to the two rotary servo motors, and the four fixed slots are respectively arranged on the first control base and the second control base. The second stretching cylinder is communicatively connected to the control base unit.

[0014] In some embodiments, the invention further comprises safety bumps, wherein the safety bumps are provided in two groups, respectively provided between the first control base and the rotary servo motor and between the second control base and the rotary servo motor;

[0015] The safety protrusions include a first protrusion, a second protrusion and a third protrusion; two groups of the first protrusions and the second protrusions are respectively arranged on the connecting surface of the first control base between the first control base and the rotary servo motor, and on the connecting surface of the second control base between the second control base and the rotary servo motor; two groups of the third protrusions are respectively arranged on the connecting surface of the rotary servo motor between the first control base and the rotary servo motor, and on the connecting surface of the rotary servo motor between the second control base and the rotary servo motor.

[0016] In some embodiments, a third stretching cylinder is further included. Two third stretching cylinders are provided. The two third stretching cylinders are respectively arranged inside the two first support rods. The two ends of the third stretching cylinder are respectively connected to the second support rods. The third stretching cylinder is communicatively connected to the control base unit.

[0017] In some embodiments, each second support rod is fixedly connected to three first stretching cylinders, two of which are respectively arranged at the two ends of the second support rod close to the first support rod, and another first stretching cylinder is arranged at the center point of the second support rod, and the length of the movable clamp is greater than the distance between the two first stretching cylinders close to the first stretching cylinder.

[0018] In some embodiments, the first control base is communicatively connected to the second control base, and the second control base controls the rotation of the rotary servo motor according to a signal sent by the first control base.

[0019] In some embodiments, a hydraulic lifting device is respectively provided below the first control base and the second control base.

[0020] In some embodiments, an infrared laser blocking sensor is further included, and the infrared laser blocking sensor is disposed on the control base unit.

[0021] In some embodiments, a laser infrared counter is further included, and the laser infrared counter is arranged on the control base unit.

[0022] To achieve the above objectives, another aspect of the present invention provides a method for rotating marking on the front and back sides of a flexible circuit board, which is applied to the aforementioned rotating marking device for marking on the front and back sides of a flexible circuit board, comprising:

[0023] Obtaining the flexible circuit board grasped by the robotic arm and placing it at the positioning center point so that the edge of the flexible circuit board falls on the fixing clamp bar;

[0024] The control base unit controls the first stretching cylinder to drive the movable clamping bar to press down, so that the fixed clamping bar and the movable clamping bar clamp the flexible circuit board;

[0025] After the front side of the flexible circuit board is marked, the control base unit controls the rotary servo motor to drive the connecting rod to rotate, so that the connecting rod drives the supporting frame to flip 180 degrees, with the back side of the flexible circuit board facing upward;

[0026] After the marking on the back side of the flexible circuit board is completed, the control base unit controls the rotary servo motor to drive the connecting rod to rotate, so that the connecting rod drives the supporting frame to turn 180 degrees again, and the front side of the flexible circuit board faces upward;

[0027] The control base unit controls the first stretching cylinder to drive the movable clamp to lift up, so that the movable clamp is separated from the flexible circuit board, waiting for the robotic arm to grab the flexible circuit board that has completed the front and back marking.

[0028] The embodiments of the present application include at least the following beneficial effects: The present application provides a rotation device and method for marking the front and back sides of a flexible circuit board. The solution controls the first stretching cylinder by controlling the base unit, and the first stretching cylinder drives the movable clamping bar, so that the fixed clamping bar and the movable clamping bar clamp the flexible circuit board for front marking. According to the control base unit, the rotation of the rotary servo motor is controlled to drive the connecting rod, so that the connecting rod transmits the support frame, driving the flexible circuit board to rotate 180° for back marking, thereby achieving the purpose of automatic front and back marking of the flexible circuit board. The rotation device for marking the front and back sides of the flexible circuit board replaces the traditional operation process of manually flipping the flexible circuit board, avoids the deviation of the marking position due to human factors and the probability of contamination of the flexible circuit board, improves the marking accuracy and product quality, greatly reduces the time and cost of equipment operation, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of a rotating device for marking the front and back sides of a flexible circuit board provided in an embodiment of the present application;

[0030] Figure 2 Schematic diagram of the structure of the fixed clamp;

[0031] Figure 3 1. It is a structural diagram of a safety buckle device;

[0032] Figure 4 It is a structural diagram of the safety bump;

[0033] Figure 5 It is a structural diagram of the third stretching cylinder;

[0034] Figure 6 This is a flow chart of a method for rotating marking on the front and back sides of a flexible circuit board provided in an embodiment of the present application;

[0035] Figure 7 It is a three-dimensional schematic diagram of the rotary device for marking the front and back sides of a flexible circuit board. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are merely examples of devices and methods consistent with some aspects of the embodiments of the present application.

[0037] It will be understood that the terms "first", "second", etc. used in this application may be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0038] The terms "at least one", "plurality", "each", "any", etc. used in this application include "at least one", "two" or more, "plurality" or "each", "any" or "any one", "each" or "any one" as used herein.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0040] like Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of a rotating device for marking the front and back sides of a flexible circuit board provided in an embodiment of the present application. Figure 2 It is a structural diagram of the fixed clamping strip 520, including: a support frame, a connecting rod 300, a rotary servo motor 400, a fixed clamping strip 520, a first stretching cylinder 610, a movable clamping strip 510 and a control base unit.

[0041] Specifically, the support frame includes two first support rods 100 of equal length and two second support rods 200 of equal length. The two first support rods 100 and the two second support rods 200 are connected to form a rectangular frame, namely the support frame. Two connecting rods 300 are provided, and one end of the connecting rod 300 is connected to the center point of the first support rod 100 respectively. The center point of the first support rod 100 is located at the intersection of the symmetry line of the first support rod 100 and the first support rod 100, so that the center point is equal to the length of the two ends of the first support rod 100. Two rotary servo motors 400 are provided, and one end of the connecting rod 300 is connected to the first support rod 100 of the support frame, and the other end is connected to the rotary servo motor 400. When the rotary servo motor 400 is started, the support frame is driven to rotate through the connecting rod 300. There are two fixing clamps 520, and the fixing clamps 520 are fixedly connected to the second support rods 200 respectively. In order to more stably support the flexible circuit board, fixing clamps 520 are respectively provided on the two second support rods 200, and the fixing clamps 520 are fixedly connected to the second support rods 200. Figure 2As shown, the connection surface between the fixing bar 520 and the second support rod 200 forms a 90° angle. This maximizes the contact area between the flexible circuit board and the fixing bar 520 when the flexible circuit board is placed on the fixing bar 520. One end of the first stretching cylinder 610 is fixedly connected to the second support rod 200, and the connection point between the first stretching cylinder 610 and the second support rod 200 is located above the connection point between the fixing bar 520 and the second support rod 200. Two movable clamps 510 are provided, and the movable clamps 510 are fixedly connected to the other end of the first stretching cylinder 610 respectively. Since the movable clamps 510 and the fixed clamps 520 are to be used in conjunction with each other, they are respectively provided above the fixed clamps 520. One end of the first stretching cylinder 610 is fixedly connected to the second support rod 200, and the other end of the first stretching cylinder 610 is connected to the movable clamp 510. The distance between the movable clamp 510 and the second support rod 200 is controlled by the first stretching cylinder 610, so that the distance between the movable clamp 510 and the fixed clamp 520 changes. When it is necessary to clamp the flexible circuit board, the movable clamp 510 is controlled to the minimum distance from the fixed clamp 520, thereby achieving clamping of the flexible circuit board. The control base unit includes a first control base 710 and a second control base 720. The first control base 710 and the second control base 720 are respectively connected to the two rotary servo motors 400. The control base unit is in communication with the first stretching cylinder 610. The control base unit can control the rotation of the rotary servo motor 400 and the extension and contraction of the first stretching cylinder 610. It can also serve as the support structure of the flexible circuit board front and back marking rotary device, so that the column of the support frame is suspended in the air for easy rotation and flipping. The flexible circuit board front and back marking rotary device ensures the working efficiency and the neatness of the flexible circuit board.

[0042] In some embodiments, as Figure 3 As shown, Figure 3 It is a structural diagram of a safety snap-in device, which includes two second stretching cylinders 621 and four fixed slots 622. The two second stretching cylinders 621 are respectively connected to two rotary servo motors 400, and the four fixed slots 622 are respectively arranged on the first control base 710 and the second control base 720. The second stretching cylinder 621 is communicatively connected to the control base unit.

[0043] Specifically, a safety snap device is provided to ensure safe rotation of the flexible circuit board front and back marking rotary device during rotation, preventing rotation exceeding the required 180° or less than 180°, thereby damaging the equipment or injuring the operator. The second stretching cylinder 621 in the safety snap device is provided on the rotary servo motor 400, and the fixing slots 622 in the safety snap device are provided on the first control base 710 and the second control base 720. Two fixing slots 622 are provided on the first control base 710 and the second control base 720, respectively. The two fixing slots 622 are symmetrically positioned on the first control base 710 and the second control base 720 relative to each other. The second stretching cylinder 621 is communicatively connected to the control base unit. When the safety buckle device is in the initial state, the telescopic rod of the second stretching cylinder 621 is located in the fixed slot 622 and is located in the fixed slot 622 on the same side of the first control base 710 and the second control base 720. When the rotating device for marking the front and back sides of the flexible circuit board is ready to start rotation, the control base unit is first used to control the second stretching cylinder 621 to shorten the telescopic rod so that it is disengaged from the fixed slot 622. When the second stretching cylinder 621 is disengaged from the fixed slot 622, the control base unit controls the rotation servo motor 400 to rotate. When it is about to rotate to 180°, the second stretching cylinder 621 is controlled to lengthen the telescopic rod so that when it reaches 180°, the telescopic rod is inserted into the fixed slot 622 to lock the rotation state, thereby preventing the rotation servo motor 400 from rotating more than 180°. If the rotating servo motor 400 malfunctions and fails to rotate 180°, the telescopic rod can be extended directly to the surface of the rotating servo motor 400. Due to the friction between the telescopic rod and the surface of the rotating servo motor 400, the fixed support frame will not swing back and forth, avoiding the rotation angle of the rotating servo motor 400, which may cause marking misalignment and affect the production process. Sudden rotation may injure operators or damage other machinery, requiring operators to repair. The safety latch device limits the rotation angle of the rotating servo motor 400, ensuring the safe operation of the rotating device for marking on the front and back sides of the flexible circuit board.

[0044] In some embodiments, as Figure 4 As shown, Figure 4Schematic diagram of the structure of the safety bumps. Two groups of safety bumps are provided, one between the first control base 710 and the rotary servo motor 400 and the other between the second control base 720 and the rotary servo motor 400. The safety bumps include a first bump 810, a second bump 820, and a third bump 830. The two groups of first bumps 810 and second bumps 820 are respectively provided on the connecting surface of the first control base 710 between the first control base 710 and the rotary servo motor 400, and on the connecting surface of the second control base 720 between the second control base 720 and the rotary servo motor 400. The two groups of third bumps 830 are respectively provided on the connecting surface of the rotary servo motor 400 between the first control base 710 and the rotary servo motor 400, and on the connecting surface of the rotary servo motor 400 between the second control base 720 and the rotary servo motor 400.

[0045] Specifically, two sets of first and second protrusions 810, 820 are respectively disposed on the connection surfaces of the first and second control bases 710, 720, wherein the connection surfaces refer to the surfaces where the first and second control bases 710, 720 contact each other with the rotary servo motor 400 when aligned and connected. The two sets of first and second protrusions 810, 820 are symmetrically positioned. The shape of the first protrusion 810 can be circular or rectangular, which is not limited in this application. The first and second protrusions 810, 820 are used to limit the further movement of the third protrusion 830 when the rotary servo motor 400 drives the third protrusion 830 to the first or second protrusion 810, 820, thereby limiting the third protrusion 830 and preventing the rotary servo motor 400 from rotating beyond 180°. The safety protrusions are a safety measure for the rotary device for marking the front and back sides of the flexible circuit board. They are also used to prevent misalignment of the marking due to rotation angle issues when the flexible circuit board is reversed for marking on the back side, which could affect the production process. The third protrusion 830 is mounted on the rotary servo motor 400 at a position where the first protrusion 810 and the second protrusion 820 can limit 180° rotation. For example, when the flexible circuit board rotates from the front to the back, the third protrusion 830 contacts the first protrusion 810, and the first protrusion 810 limits the third protrusion 830. When the flexible circuit board rotates from the back to the front, the third protrusion 830 moves away from the first protrusion 810 and contacts the second protrusion 820, and the second protrusion 820 limits the third protrusion 830. The safety protrusion and the safety latch device can be used in combination or interchangeably.

[0046] In some embodiments, the first and second protrusions 810, 820 are made of permanent magnets, and the third protrusion 830 is made of an electromagnet. When the third protrusion 830 contacts the first or second protrusion 810, 820, the third protrusion 830 is energized, and the third protrusion 830 is firmly magnetically attracted to the first or second protrusion 810, 820, so that the rotary servo motor 400 will no longer shake due to inertia and other reasons, and the rotary servo motor 400 is firmly connected to the control base unit. When the rotary servo motor 400 starts to rotate, by changing Figure 3 The current direction of the bump changes the magnetic pole direction of the third bump 830, so that the third bump 830 is separated from the first bump 810 or the second bump 820 to complete the rotation of the rotary servo motor 400. When it is about to rotate to 180°, the current direction of the third bump 830 is adjusted so that the third bump 830 is firmly magnetically attracted to the first bump 810 or the second bump 820, thereby achieving a stable rotation state, and will not cause the supporting frame or the flexible circuit board to swing back and forth due to factors such as inertia, thereby avoiding the resulting dangers.

[0047] In some embodiments, as Figure 5 As shown, Figure 5 Schematic diagram of the structure of the third stretching cylinder 630. Two third stretching cylinders 630 are provided, and the two third stretching cylinders 630 are respectively arranged inside the two first support rods 100. The two ends of the third stretching cylinder 630 are respectively connected to the second support rods 200. The third stretching cylinder 630 is in communication with the control base unit.

[0048] Specifically, the interior of the first support rod 100 can be a hollow tubular structure, and a third stretching cylinder 630 is disposed within the hollow space of the first support rod 100. The middle portion of the third stretching cylinder 630 is fixedly connected to the first support rod 100, and the telescopic rod end points of the third stretching cylinder 630 are connected to the end points of the second support rod 200. The telescopic rod length of the third stretching cylinder 630 is controlled by a communication connection between the control base unit and the third stretching cylinder 630. The third stretching cylinders 630 in the two first support rods 100 are of the same model and size, and the control base unit controls the two third stretching cylinders 630 with the same amplitude. Because flexible circuit boards vary in size, when marking larger flexible circuit boards, the base unit can be used to control the telescopic rod of the third stretching cylinder 630 to extend, increasing the distance between the two second support rods 200 and expanding the load-bearing area between the support frame to clamp larger flexible circuit boards. When the flexible circuit boards are smaller, the base unit can be used to control the telescopic rod of the third stretching cylinder 630 to shorten, reducing the distance between the two second support rods 200 and clamping smaller flexible circuit boards. This third stretching cylinder 630 enables the flexible circuit board front and back marking rotary device to clamp flexible circuit boards of varying sizes for front and back marking.

[0049] In some embodiments, each second support rod 200 is fixedly connected to three first stretching cylinders 610, two of which are respectively arranged at the two ends of the second support rod 200 close to the first support rod 100, and another first stretching cylinder 610 is arranged at the center point of the second support rod 200, and the length of the movable clamp 510 is greater than the distance between the two first stretching cylinders 610 close to the first stretching cylinder 610.

[0050] Specifically, when the movable clamp 510 is short, a first stretching cylinder 610 can be set on each of the two second support rods 200, and the first stretching cylinder 610 is set at the midpoint where the axis of symmetry of the movable clamp 510 and the second support rod 200 intersect. In this way, when the first stretching cylinder 610 controls the movable clamp 510, the flexible circuit board will not be clamped unevenly due to the different weights of the connected movable clamps 510 on the left and right, causing the clamping to be loose and affecting the clamping effect. When the movable clamp 510 is long, in order to better control the movable clamp 510, three first stretching cylinders 610 are set on each second support rod 200, wherein two first stretching cylinders 610 are respectively set at the two ends of the second support rod 200 close to the first support rod 100, and the other first stretching cylinder 610 is set at the center point of the second support rod 200. In this way, the movable clamp 510 can be better controlled and the three first stretching cylinders 610 can be evenly stressed. During the clamping process, the movable clamping bar 510 and the fixed clamping bar 520 provide a more stable clamping effect on the flexible circuit board, preventing the flexible circuit board from falling off due to clamping problems in the rotating device for marking the front and back of the flexible circuit board, thereby affecting subsequent marking and other production processes. In this embodiment, for longer movable clamping bars 510, the number of first stretching cylinders 610 is set to no less than three. There is no limit on the number of first stretching cylinders 610 and it is within the scope of protection of this application.

[0051] In some embodiments, the first control base 710 is in communication with the second control base 720, and the second control base 720 controls the rotation of the rotary servo motor 400 according to the signal sent by the first control base 710. Specifically, because the control base unit is in communication with the first stretching cylinder 610, the second stretching cylinder 621, and the third stretching cylinder 630, and is connected to the rotary servo motor 400, the front and back marking steps of the flexible circuit board front and back marking rotary device are completed by the control base unit during operation. If the first control base 710 and the second control base 720 in the control base unit receive different instructions, such as the control of the rotary servo motor 400, the two ends of the support frame will not rotate synchronously during the rotation process, causing damage to the machine. Therefore, a second control base 720 is set to control the rotation of the rotary servo motor 400 according to the signal sent by the first control base 710. The first control base 710 is communicated with the second control base 720. The speed of signal transmission will not cause communication delay between the first control base 710 and the second control base 720. The second control base 720 is directly controlled by the first control base 710 so that the control base unit can synchronously control other equipment components, thereby ensuring the safe operation of the rotating device for marking the front and back sides of the flexible circuit board.

[0052] In some embodiments, a hydraulic lifting device is provided below each of the first control base 710 and the second control base 720. The flexible circuit board front and back marking rotation device is provided with a hydraulic lifting device to cope with different production environments. For example, when the third stretching cylinder 630 extends the first support rod 100 to clamp a larger flexible circuit board, the extension space of the first support rod 100 at the current height is limited, and the second support rod 200 may contact the bottom surface during rotation, affecting production safety. The hydraulic lifting device can be adjusted to raise the flexible circuit board front and back marking rotation device to ensure a safe production operating space for the flexible circuit board front and back marking rotation device. The hydraulic lifting device can be manually adjusted in height, or the hydraulic lifting device can be communicatively connected to the control base unit, and the control base unit controls the lifting hydraulic device to ensure that the first control base 710 and the second control base 720 are at the same height, preventing the flexible circuit board front and back marking rotation device from tilting.

[0053] In some embodiments, an infrared laser blocking sensor (not shown) is also included. The infrared laser blocking sensor is mounted on the control base unit. Specifically, during the flexible circuit board manufacturing process, the optical concave blocking sensor utilizes laser technology and the principle of physical blocking to achieve precise detection or positioning. When the flexible circuit board is placed on the support frame, positioning and alignment detection, foreign object detection, defect warning, and dynamic monitoring during the marking process are performed. For positioning and alignment detection, when the edge of the flexible circuit board or its specific marking moves onto the fixed clamp 520, blocking the laser, the infrared laser blocking sensor triggers a signal. Based on the signal, it determines whether the flexible circuit board has reached the designated position. If so, the movable clamp 510 is immediately controlled to clamp the flexible circuit board for marking. For mandatory detection and defect warning, if debris or localized protrusions on the flexible circuit board surface can cause problems in the subsequent marking process, the infrared laser blocking sensor is mounted on the first control base 710 and the second control base 720. The laser height is preset based on the thickness of the flexible circuit board. If foreign matter on the flexible circuit board surface causes an abnormal thickness, the foreign object enters the monitoring area and blocks the laser, the sensor triggers an alarm, prompting the production line to be cleaned. Dynamic monitoring during the marking process requires real-time monitoring of the FPC's rotational stability during flipping. If the FPC experiences a freeze or rotational angle deviation during flipping, the FPC's monitoring area will shift off-center, indicating an abnormal laser blocking time or position. The infrared laser blocking sensor detects this anomaly based on signal changes and promptly provides feedback to the control base unit for adjustments. The infrared laser blocking sensor's high-precision, non-contact monitoring solves the challenges of positioning and defect detection for FPCs in high-speed production.

[0054] In some embodiments, a laser infrared counter (not shown) is also included. The laser infrared counter is mounted on the control base unit. Specifically, the laser infrared counter is primarily used to accurately count the number of markings on flexible circuit boards and monitor the stability of the production process, addressing issues such as large manual counting errors, low efficiency, and difficulty tracing production line anomalies. The laser infrared counter, in conjunction with the rotating device for marking the front and back sides of the flexible circuit board, displays production speed in real time. It can quickly identify problems by detecting abnormal counts, such as sudden interruptions or surges in the count. For example, problems such as a malfunction of the rotary servo motor 400 or a clogged marking head can be identified by checking the abnormal counts, significantly reducing downtime and maintenance time. The counter automatically records the counting time, total number, and operating parameters such as the laser power or marking speed for each batch of flexible circuit boards, creating an electronic ledger. When quality issues arise, counting data for the corresponding period can be quickly retrieved to track the extent of defective products. The laser infrared counter eliminates the need for physical contact with the flexible circuit board surface, avoiding secondary damage such as creases and contamination caused by manual counting. It is particularly suitable for ultra-thin or precision flexible circuit boards. Through zero-error counting, real-time anomaly warnings, and data tracing, the laser infrared counter improves production efficiency and quality controllability.

[0055] To achieve the above purpose, Figure 6 and Figure 7 As shown, another aspect of the embodiment of the present application provides a method for rotating marking on the front and back sides of a flexible circuit board. The method for rotating marking on the front and back sides of a flexible circuit board includes but is not limited to steps S100 to S500:

[0056] Step S100: The flexible circuit board grasped by the robot arm is placed at the positioning center point so that the edge of the flexible circuit board falls on the fixed clamping strip;

[0057] Step S200: controlling the base unit to control the first stretching cylinder to drive the movable clamping bar to press downward, so that the fixed clamping bar and the movable clamping bar clamp the flexible circuit board;

[0058] Step S300: After the front side of the flexible circuit board is marked, the base unit is controlled to control the rotary servo motor to rotate the connecting rod, so that the connecting rod drives the support frame to flip 180 degrees, with the back side of the flexible circuit board facing upward;

[0059] Step S400: After the back side of the flexible circuit board is marked, the base unit is controlled to control the rotary servo motor to drive the connecting rod to rotate, so that the connecting rod drives the support frame to turn another 180 degrees, with the front side of the flexible circuit board facing upward;

[0060] Step S500: The base unit is controlled to control the first stretching cylinder to drive the movable clamping bar to lift up, so that the movable clamping bar is separated from the flexible circuit board, and the robot arm is waiting to grab the flexible circuit board that has been marked on both sides.

[0061] Specifically, in step S100, the robotic arm scans the tray or initial position where the flexible circuit board is placed through the visual recognition system, uses image processing technology to identify the shape, position and angle information of the flexible circuit board, and calculates the deviation between its current posture and the target posture. Then, the robotic arm adjusts its own position and angle based on the deviation information, and its end effector accurately grasps the flexible circuit board. After grasping, the robotic arm can move to the top of the positioning center point of the rotating device for marking the front and back sides of the flexible circuit board according to the preset path, while the visual system continuously monitors its movement process to ensure that the path is correct. After reaching the top of the positioning center point of the rotating device for marking the front and back sides of the flexible circuit board, the robotic arm slowly descends until the edge of the flexible circuit board is stably mounted on the two fixed clamps 520, completing the placement action, so that the flexible circuit board is accurately positioned and ready for the subsequent marking process.

[0062] In some embodiments, in step S200, the infrared laser blocking sensor can be used to judge and determine that the flexible circuit board is stably placed on the marking rotating device on the front and back sides of the flexible circuit board, and the base unit is controlled to control the first stretching cylinder 610 to extend the telescopic rod. Since the other end of the first stretching cylinder 610 is connected to the movable clamp 510, when the telescopic rod of the first stretching cylinder 610 is extended, the movable clamp 510 will be driven to press down, and the movable clamp 510 continues to move downward until it forms a clamping state with the fixed clamp 520 on the flexible circuit board. At this time, the first stretching cylinder 610 is supported by the fixed clamp 520 to provide an upward supporting force, and the magnitude of the force is judged by the sensor in the first stretching cylinder 610. When the force threshold is reached, the telescopic rod of the first stretching cylinder 610 is locked and kept fixed to avoid unstable clamping due to unstable fixation of the telescopic rod of the first stretching cylinder 610.

[0063] In some embodiments, in step S300, after the telescopic rod of the first stretching cylinder 610 is locked, the control base unit sends a clamping stable signal to the marking device. The marking device locks the coding area through CCD point-to-point positioning (a technology that uses a charge-coupled device camera to capture images and calculates the target point coordinates through an algorithm to achieve precise positioning) and then performs laser engraving on the front of the flexible circuit board. After marking is completed, the marking device sends a marking completion signal to the control base unit. After receiving the signal, the control base unit energizes the rotation servo motor 400 to rotate. During the rotation process, since the connecting rod 300 is fixedly connected to the rotation servo motor 400, the connecting rod 300 and the support frame connected to the connecting rod 300 rotate. When the rotation reaches 180°, the control base unit controls the rotation servo motor 400 to instantly rotate in the reverse direction and then immediately cuts off the power. The force of the reverse rotation offsets the force generated by the inertia of the forward rotation, keeping the support frame balanced. Since the flexible circuit board is rotated 180°, the back of the flexible circuit board is now facing up.

[0064] In some embodiments, in steps S400 to S500, the infrared laser blocking sensor can be used to determine that the back of the flexible circuit board is facing upward and the state is stable, and then send a signal to the marking device. The marking device locks the coding area through CCD point-to-point positioning and then performs laser engraving on the back of the flexible circuit board. After the marking is completed, the marking device sends a signal to the control base unit indicating that the marking is completed. The control base unit controls the rotary servo motor 400 to drive the connecting rod 300 to rotate, so that the connecting rod 300 drives the support frame to flip 180° again, and the front of the flexible circuit board faces upward. When it is determined that the front of the flexible circuit board is facing upward and the state is stable, the first stretching cylinder 610 unlocks and releases the pressure to retract the telescopic rod, and the movable clamp 510 is lifted, so that the flexible circuit board is in a released state, waiting for the robotic arm to grab the flexible circuit board that has completed the marking on the front and back sides.

[0065] In some embodiments, the initial setup, installation and debugging process of the rotating device for marking the front and back sides of the flexible circuit board includes the following steps: assembling the first stretching cylinder 610 with the second support rod 200 and the movable clamp 510 through a customized module model; setting a safety snap device or a safety protrusion after assembling the support frame, the connecting rod 300, the control base unit, the rotating servo motor 400 and the fixed clamp 520; debugging the fixture module composed of the movable clamp 510 and the fixed clamp 520, the safety snap device or the safety protrusion, the rotating servo motor 400 and the control base unit to verify whether the fit and the set running trajectory meet the standards; simulating the rotating servo motor 400 and the control base unit to find the critical point of rotation and install the infrared laser blocking sensor; verifying the infrared laser blocking sensor and testing the sensor status after the rotating servo motor 400 rotates; whether the second stretching cylinder 621 in the safety snap device pops out normally after the infrared laser blocking sensor is triggered; and whether the laser infrared counter counts normally after the robotic arm takes up and tests and lowers the flexible circuit board.

[0066] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0067] The embodiments described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0068] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0069] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0070] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0072] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A rotating device for marking the front and back of a flexible circuit board, characterized in that: include: A support frame, the support frame comprising two first support rods and two second support rods, the first support rods and the second support rods being connected; Connecting rods, two of which are provided, one end of each connecting rod being connected to the center point of each of the first supporting rods; A rotary servo motor, wherein two rotary servo motors are provided and each of the rotary servo motors is connected to the other end of the connecting rod; Two fixing clamps are provided, and each fixing clamp is fixedly connected to the second support rod; a first stretching cylinder, one end of which is fixedly connected to the second support rod; Two movable clamping bars are provided, and each movable clamping bar is fixedly connected to the other end of the first stretching cylinder; A control base unit includes a first control base and a second control base, wherein the first control base and the second control base are respectively connected to the two rotary servo motors, and the control base unit is in communication connection with the first stretching cylinder.

2. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: It also includes a safety snap-on device, which includes two second stretching cylinders and four fixed slots. The two second stretching cylinders are respectively connected to the two rotary servo motors. The four fixed slots are respectively arranged on the first control base and the second control base. The second stretching cylinder is communicatively connected to the control base unit.

3. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: It also includes safety bumps, wherein the safety bumps are provided in two groups, respectively provided between the first control base and the rotary servo motor and between the second control base and the rotary servo motor; The safety protrusions include a first protrusion, a second protrusion and a third protrusion; two groups of the first protrusions and the second protrusions are respectively arranged on the connecting surface of the first control base between the first control base and the rotary servo motor, and on the connecting surface of the second control base between the second control base and the rotary servo motor; two groups of the third protrusions are respectively arranged on the connecting surface of the rotary servo motor between the first control base and the rotary servo motor, and on the connecting surface of the rotary servo motor between the second control base and the rotary servo motor.

4. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: It also includes a third stretching cylinder, two of which are respectively arranged inside the two first support rods, and the two ends of the third stretching cylinder are respectively connected to the second support rods, and the third stretching cylinder is communicatively connected to the control base unit.

5. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: Each of the second support rods is fixedly connected to three of the first stretching cylinders, two of which are respectively arranged at the two ends of the second support rod close to the first support rod, and another first stretching cylinder is arranged at the center point of the second support rod, and the length of the movable clamp is greater than the distance between the two first stretching cylinders close to the first stretching cylinder.

6. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: The first control base is communicatively connected to the second control base, and the second control base controls the rotation of the rotary servo motor according to a signal sent by the first control base.

7. The flexible circuit board front and back marking rotating device according to claim 1, characterized in that: Hydraulic lifting devices are respectively provided below the first control base and the second control base.

8. The rotating device for marking the front and back surfaces of a flexible circuit board according to claim 1, characterized in that: It also includes an infrared laser blocking sensor, which is arranged on the control base unit.

9. The rotating device for marking the front and back surfaces of a flexible circuit board according to claim 1, characterized in that: It also includes a laser infrared counter, which is arranged on the control base unit.

10. A method for rotating marking on the front and back sides of a flexible circuit board, applied to the rotating device for marking on the front and back sides of a flexible circuit board as claimed in any one of claims 1 to 9, characterized in that: include: Obtaining the flexible circuit board grasped by the robotic arm and placing it at the positioning center point so that the edge of the flexible circuit board falls on the fixing clamp bar; The control base unit controls the first stretching cylinder to drive the movable clamping bar to press down, so that the fixed clamping bar and the movable clamping bar clamp the flexible circuit board; After the front side of the flexible circuit board is marked, the control base unit controls the rotary servo motor to drive the connecting rod to rotate, so that the connecting rod drives the supporting frame to flip 180 degrees, with the back side of the flexible circuit board facing upward; After the marking on the back side of the flexible circuit board is completed, the control base unit controls the rotary servo motor to drive the connecting rod to rotate, so that the connecting rod drives the supporting frame to turn 180 degrees again, and the front side of the flexible circuit board faces upward; The control base unit controls the first stretching cylinder to drive the movable clamp to lift up, so that the movable clamp is separated from the flexible circuit board, waiting for the robotic arm to grab the flexible circuit board that has completed the front and back marking.

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