Detection device and detection method

Abstract

The embodiment of the invention relates to the technical field of printing equipment, and particularly discloses a detection device and method, and the device comprises a conveying assembly which is used for conveying a to-be-detected plate to a detection position in a first direction; the first baffle is arranged on one side of the conveying assembly; the first photoelectric sensor is arranged on the side, close to the to-be-detected plate, of the first baffle, and the first photoelectric sensor is located above the detection position; the second baffle is arranged on the other side of the conveying assembly; the second photoelectric sensor is arranged on the side, close to the to-be-detected plate, of the second baffle, the second photoelectric sensor is located above the detection position, and the second photoelectric sensor and the first photoelectric sensor are oppositely arranged in the second direction in a spaced mode; when at least one of the first photoelectric sensor and the second photoelectric sensor detects the board to be detected, the first alarm system gives an alarm. According to the embodiment of the invention, the method can detect the angle turning in the conveying process of the PCB.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a detection device and a detection method. Background Art

[0002] In the related art, during the process of printing text on a PCB board (referring to marking text, logos, serial numbers, trademarks, etc. on the PCB board), the PCB board needs to be transported to a printing station for clamping, and then printing is performed. In order to ensure that printing is performed at a preset position on the PCB board, it is necessary to ensure that the length and width of the transported PCB board meet the length and width of the clamping station.

[0003] In the process of realizing the present invention, the inventor of the present invention found that: during the transportation of PCB boards, due to the influence of the board placement machine or human factors, the PCB boards are prone to angle changes during transportation, and the length and width of the PCB boards are prone to interchange, which can easily cause the PCB boards to be unable to be clamped when transported to the next process, resulting in board collision losses and affecting the printing efficiency. Summary of the invention

[0004] In view of the above problems, the embodiments of the present invention provide a detection device and a detection method, which overcome the above problems or at least partially solve the above problems.

[0005] According to one aspect of the present invention, there is provided a detection device, comprising a conveying assembly for conveying a plate to be detected to a detection position along a first direction; a first baffle, arranged on one side of the conveying assembly; a first photoelectric sensor, arranged on a side of the first baffle close to the plate to be detected, the first photoelectric sensor being located above the detection position in a vertical direction, and the detection direction of the first photoelectric sensor being toward the detection position; a second baffle, arranged on the other side of the conveying assembly, the second baffle being arranged relative to the first baffle along a second direction, the first baffle moving synchronously with the second baffle, and the first baffle and the second baffle being able to approach or move away from each other along the second direction; the second photoelectric sensor being arranged The second baffle is close to one side of the plate to be detected, the second photoelectric sensor is located above the detection position in the vertical direction, the second photoelectric sensor and the first photoelectric sensor are opposite to and spaced apart from each other in the second direction, the distance between the first photoelectric sensor and the second photoelectric sensor in the second direction is greater than or equal to the width of the plate to be detected, and the second direction is perpendicular to the first direction and the vertical direction; a control component, the control component is connected to the conveying component, the first photoelectric sensor and the second photoelectric sensor, and a first alarm system is arranged in the control component, and when at least one of the first photoelectric sensor and the second photoelectric sensor detects the plate to be detected, the first alarm system sounds an alarm.

[0006] In an optional manner, the first baffle and the second baffle are connected through a transmission assembly, the first baffle and the second baffle move synchronously, and the first baffle and the second baffle can approach each other or move away from each other along the second direction; the initial spacing distance between the first baffle and the second baffle along the second direction is S, the distance from the first photoelectric sensor to the plate to be detected along the second direction is d1, the distance from the second photoelectric sensor to the plate to be detected along the second direction is d2, the distance from the first photoelectric sensor to the first baffle along the second direction, and the distance from the second photoelectric sensor to the second baffle along the second direction are both d, the detection width of the plate to be detected along the second direction is H, and when d1=d2, H=S-(d1+d2)-2d.

[0007] In an optional manner, when |d1-d2|<d, the plate to be inspected does not contact the first baffle plate or the second baffle plate, and H=S-(d1+d2)-2d.

[0008] In an optional manner, when d1-d2≥d, and the plate to be inspected contacts the second baffle, H=S-2×d1-d.

[0009] In an optional manner, when d2-d1≥d, and the plate to be inspected contacts the first baffle, H=S-2×d2-d.

[0010] In an optional manner, a second alarm system is provided in the control component; when the actual width of the plate to be detected is h, when |Hh|≤δ, the second alarm system does not sound an alarm, and when |Hh|>δ, the second alarm system sounds an alarm.

[0011] According to another aspect of the present invention, there is provided a detection method using the detection device as described above, comprising the following steps: S1: an initial spacing distance between the first baffle and the second baffle along the second direction is S; S2: the conveying component conveys the board to be detected to a detection position; S3: a first photoelectric sensor located on the first baffle and a second photoelectric sensor located on the second baffle detect the board to be detected at the detection position; S4: confirming whether the first photoelectric sensor and / or the second photoelectric sensor detects the board to be detected, if so, the control component issues an alarm, if not, the control component does not issue an alarm.

[0012] In an optional embodiment, the detection method also includes the following steps: S5: when the first photoelectric sensor and / or the second photoelectric sensor fails to detect the plate to be detected and the control component does not issue an alarm, the first baffle and the second baffle move synchronously, the first baffle drives the first photoelectric sensor to move toward the direction close to the plate to be detected, and the distance between the first photoelectric sensor and the plate to be detected along the second direction is d1, the second baffle drives the second photoelectric sensor to move toward the direction close to the plate to be detected, and the distance between the second photoelectric sensor and the plate to be detected along the second direction is d2, the distance between the first photoelectric sensor and the first baffle along the second direction, and the distance between the second photoelectric sensor and the second baffle along the second direction are both d.

[0013] In an optional manner, the detection method includes the following steps: S6: If d1=d2, the first photoelectric sensor and the second photoelectric sensor simultaneously detect the plate to be detected, then H=S-(d1+d2)-2d; if |d1-d2|<d, the plate to be detected does not contact the first baffle or the second baffle, H=S-(d1+d2)-2d; if d1-d2≥d, the plate to be detected first contacts the second baffle, and then contacts the first baffle, H=S-2×d1-d; if d2-d1≥d, the plate to be detected first contacts the first baffle, and then contacts the second baffle, H=S-2×d2-d.

[0014] In an optional manner, the detection method includes the following steps: S7: the detection width of the plate to be detected along the second direction is H, the actual width of the plate to be detected is h, if |Hh|≤δ, the control component does not issue an alarm, if |Hh|>δ, the control component issues an alarm.

[0015] The beneficial effects of the embodiment of the present invention are as follows: Different from the prior art, the embodiment of the present invention is provided with a conveying component, a first baffle, a second baffle, a first photoelectric sensor, a second photoelectric sensor and a control component. Wherein, the conveying component is used to convey the board to be detected to the detection position along the first direction, the first baffle is arranged on one side of the conveying component, the second baffle is arranged on the other side of the conveying component, the second baffle is arranged opposite to the first baffle along the second direction, the first baffle and the second baffle move synchronously, and the first baffle and the second baffle can approach each other or move away from each other along the second direction, the first photoelectric sensor is arranged on the side of the first baffle close to the board to be detected, the first photoelectric sensor is located above the detection position in the vertical direction, the detection direction of the first photoelectric sensor is toward the detection position, the second photoelectric sensor is arranged on the side of the second baffle close to the board to be detected, the second photoelectric sensor is located above the detection position in the vertical direction, the second photoelectric sensor and the first photoelectric sensor are arranged opposite to and spaced apart in the second direction, the distance between the first photoelectric sensor and the second photoelectric sensor in the second direction is greater than the width of the board to be detected, the control component is connected to the first photoelectric sensor and the second photoelectric sensor, and a first alarm system is arranged in the control component. When at least one of the first photoelectric sensor and the second photoelectric sensor detects a plate to be detected When measuring the board, the first alarm system sounds an alarm. In this way, when the conveying component conveys the PCB board to the detection position along the first direction, the first photoelectric sensor and the second photoelectric sensor respectively located on both sides of the PCB board along the second direction can detect the PCB board at the detection position. Since the distance between the first photoelectric sensor and the second photoelectric sensor along the second direction is greater than or equal to the width of the PCB board, and the distance between the first photoelectric sensor and the second photoelectric sensor along the second direction is less than the length of the PCB board, under normal circumstances, when the PCB board is at the detection position, the two sides of the PCB board along the second direction will not be detected by the first photoelectric sensor and the second photoelectric sensor. When the PCB board turns at an angle, and in serious cases, the length and width of the PCB board are interchanged, at least one of the first photoelectric sensor and the second photoelectric sensor can detect the PCB board, and the first alarm system in the control component sounds an alarm. The user can adjust the turning angle of the PCB board or remove the PCB board and re-convey it according to the alarm prompt, thereby reducing the situation of PCB board collision during transportation, thereby improving the printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of a partial structure of a detection device according to an embodiment of the present invention from an angle;

[0018] Figure 2 It is a schematic diagram of a conveying state of a partial structure of a detection device according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of another conveying state of a partial structure of the detection device according to an embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the process of the detection method of the embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of a flow chart of an embodiment of the detection method of the present invention;

[0022] Figure 6 It is a schematic flow chart of another embodiment of the detection method of the present invention;

[0023] Figure 7 It is a schematic flow chart of another embodiment of the detection method of the present invention. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0026] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] It should be noted that the boards to be tested in this application include but are not limited to PCB boards, thin plates, metal plates, composite material boards, etc. This application is described using the application to PCB boards as an example.

[0028] In order to better illustrate the structure of the detection device 1000, the structure of the detection device 1000 will be described in combination with the X, Y, and Z axes. The X, Y, and Z axes are perpendicular to each other, the first direction is along the X-axis direction, the second direction is along the Y-axis direction, and the vertical direction is along the Z-axis direction.

[0029] See also Figure 1 The detection device 1000 includes a frame, a conveying component 10, a first baffle 20, a second baffle 30, a first photoelectric sensor 40, a second photoelectric sensor 50 and a control component. Wherein, the conveying component 10 is arranged on the frame, and the conveying component 10 is used to convey the PCB board to be detected to the detection position along the first direction X, the first baffle 20 is arranged on one side of the conveying component 10, and the second baffle 30 is arranged on the other side of the conveying component 10, and the second baffle 30 is arranged opposite to the first baffle 20 along the second direction Y, the first photoelectric sensor 40 is arranged on the side of the first baffle 20 close to the PCB board to be detected, the first photoelectric sensor 40 is located above the detection position along the vertical direction Z, and the detection direction of the first photoelectric sensor 40 is toward the detection position, the second photoelectric sensor 50 is arranged on the side of the second baffle 30 close to the PCB board to be detected, the second photoelectric sensor 50 is located above the detection position along the vertical direction Z, the second photoelectric sensor 50 and the first photoelectric sensor 40 are opposite and spaced apart along the second direction Y, the control component is connected to the first photoelectric sensor 40 and the second photoelectric sensor 50, and the control component can be used to control the first photoelectric sensor 40 and the second photoelectric sensor 50. The frame, the conveying assembly 10, the first baffle 20, the second baffle 30, the first photoelectric sensor 40, the second photoelectric sensor 50 and the control assembly are described in detail below. It can be understood that the connection between the control assembly and the first photoelectric sensor 40 and the second photoelectric sensor 50 includes but is not limited to electrical connection, wireless communication connection, wired communication connection, etc.

[0030] It should be noted that the first baffle 20, the second baffle 30, the first photoelectric sensor 40 and the second photoelectric sensor 50 are controlled by the same control system, and the conveying component 10 can be controlled by a separate control system. This arrangement can reduce the mutual interference between the conveying component 10 and the first baffle 20, the second baffle 30, the first photoelectric sensor 40, and the second photoelectric sensor 50.

[0031] For the above-mentioned conveying assembly 10 and the frame (not shown), as Figure 1 As shown, the conveying assembly 10 is arranged on the frame, and the conveying assembly 10 is used to convey the PCB board to be detected to the detection position along the first direction X. The conveying assembly 10 includes a belt (not shown), a first pulley (not shown), a second pulley (not shown) and a driving motor (not shown), the first pulley and the second pulley are both rotatably connected to the frame, the belt is sleeved on the first pulley and the second pulley, the output end of the driving motor is connected to the first pulley, the rotation of the driving motor drives the rotation of the first pulley and the second pulley, thereby driving the belt to rotate, and the PCB board to be detected located on the belt is moved along the first direction X, and the user can control the displacement of the PCB board to be detected along the first direction X according to the number of rotations of the driving motor. It can be understood that: the detection position can be located at a certain position on the belt or a certain detection platform outside the belt. In this application, the detection position is a certain position on the belt, and the user can select it according to actual needs, and it is not specifically limited in this application.

[0032] In some embodiments, the conveying assembly 10 is composed of two conveying belts that can be opened and closed. The two conveying belts can be close to or away from each other. When the PCB board to be inspected is normally transported, the two conveying belts are in a tight state. After the PCB board to be inspected reaches a preset position, the two conveying belts can be opened to place the PCB board to be inspected at the preset position.

[0033] For the first baffle 20 and the second baffle 30, as Figure 1 As shown, the first baffle 20 is arranged on one side of the conveying assembly 10, and the second baffle 30 is arranged on the other side of the conveying assembly 10. The second baffle 30 and the first baffle 20 are arranged opposite to each other along the second direction Y. The first baffle 20 and the second baffle 30 can block the PCB board to be inspected, and can reduce the situation where the PCB board to be inspected on the belt falls. It can be understood that: for the convenience of detection, the spacing distance between the first baffle 20 and the second baffle 30 along the second direction Y can be set by the user according to actual needs, and it is not specifically limited in this application.

[0034] In some embodiments, the first baffle 20 and the second baffle 30 are connected by a transmission assembly, the first baffle 20 and the second baffle 30 move synchronously, and the first baffle 20 and the second baffle 30 can approach each other or move away from each other along the second direction Y. Such a configuration is provided so that the width of the PCB to be detected can be calculated accordingly later. When the first baffle 20 moves along the second direction Y, it correspondingly drives the first photoelectric sensor 40 to move in the second direction Y, and when the second baffle 30 moves along the second direction Y, it correspondingly drives the second photoelectric sensor 50 to move in the second direction Y. When the first baffle 20 and the second baffle 30 approach each other along the second direction Y, it correspondingly drives the first photoelectric sensor 40 to move toward the PCB to be detected along the second direction Y for detection, and drives the second photoelectric sensor 50 to move toward the PCB to be detected along the second direction Y for detection.

[0035] In some embodiments, the transmission assembly includes a first slider, a second slider, a slide rail, a screw and a motor. The slide rail is disposed on a frame. The first slider and the second slider are both slidably mounted on the slide rail. The first baffle 20 is connected to the first slider, the second baffle 30 is connected to the second slider, the screw is threadedly connected to the first slider and the second slider, the thread direction between the first slider and the screw is opposite to the thread direction between the second slider and the screw, and the output end of the motor is connected to the screw, and the screw is driven by the motor to rotate, so that the first slider and the second slider can be driven to move closer to or away from each other on the slide rail, thereby driving the first baffle 20 and the second baffle 30 to move closer to or away from each other in the second direction Y. It can be understood that in order to realize the movement principle of the first baffle 20 and the second baffle 30 moving closer to or away from each other in the second direction Y, the structure of the transmission assembly is not limited to the above, and can also be other structures, such as: the matching method of gears and racks, etc.

[0036] For the first photoelectric sensor 40, the second photoelectric sensor 50 and the control component (not shown), as Figure 1 and Figure 2As shown, the first photoelectric sensor 40 is arranged on the side of the first baffle 20 close to the PCB board to be detected, the first photoelectric sensor 40 is located above the detection position along the vertical direction Z, and the detection direction of the first photoelectric sensor 40 is toward the detection position. The second photoelectric sensor 50 is arranged on the side of the second baffle 30 close to the PCB board to be detected, the second photoelectric sensor 50 is located above the detection position along the vertical direction Z, the second photoelectric sensor 50 and the first photoelectric sensor 40 are arranged opposite and spaced along the second direction Y, the first photoelectric sensor 40 and the second photoelectric sensor 50 both emit a detection beam downward to the detection position, and the control component receives the detection signal of the first photoelectric sensor 40 and / or the second photoelectric sensor 50. It can be understood that: for the convenience of detection, the spacing distance between the first photoelectric sensor 40 and the second photoelectric sensor 50 along the second direction Y can be set by the user according to the actual length and width of the PCB board, and it is not specifically limited in this application. Among them, the actual length of the PCB board refers to the length dimension of the PCB board when the length direction is parallel to the first direction X, and the actual width of the PCB board refers to the width dimension of the PCB board when the width direction is parallel to the second direction Y.

[0037] It should be noted that: in order to detect whether the PCB board to be detected has an angle turn, it is necessary to meet the requirement that the distance between the first photoelectric sensor 40 and the second photoelectric sensor 50 along the second direction Y is greater than or equal to the width of the PCB board to be detected. Under normal circumstances, when the PCB board to be detected is in the detection position, the two sides of the PCB board to be detected along the second direction Y will not be detected by the first photoelectric sensor 40 and the second photoelectric sensor 50. When the PCB board to be detected has an angle turn or the length and width are interchanged, it can be detected by the first photoelectric sensor 40 and the second photoelectric sensor 50. When at least one of the first photoelectric sensor 40 and the second photoelectric sensor 50 detects the PCB board to be detected, the first alarm system in the control component sounds an alarm. The user can adjust the turning angle of the PCB board to be detected or remove the PCB board to be detected and re-convey it according to the alarm prompt, thereby reducing the collision of the PCB board to be detected during the conveying process, thereby improving the printing efficiency.

[0038] In some embodiments, Figure 1As shown, in order to calculate the width H of the PCB board to be detected, the initial spacing distance between the first baffle 20 and the second baffle 30 along the second direction Y is S, the distance from the first photoelectric sensor 40 to the PCB board to be detected along the second direction Y is d1, the distance from the second photoelectric sensor 50 to the PCB board to be detected along the second direction Y is d2, the distance from the first photoelectric sensor 40 to the first baffle 20 along the second direction Y, and the distance from the second photoelectric sensor 50 to the second baffle 30 along the second direction Y are both d. It should be noted that: the distance from the first photoelectric sensor 40 to the PCB board to be detected along the second direction Y refers to the displacement between the first photoelectric sensor 40 and the nearest detection point on the PCB board to be detected along the second direction Y, the distance from the second photoelectric sensor 50 to the PCB board to be detected along the second direction Y refers to the displacement between the second photoelectric sensor 50 and the nearest detection point on the PCB board to be detected along the second direction Y, the distance from the first photoelectric sensor 40 to the first baffle 20 along the second direction Y refers to the distance between the side of the first photoelectric sensor 40 close to the first baffle 20 along the second direction Y and the side of the first baffle 20 close to the PCB board to be detected, and the distance from the second photoelectric sensor 50 to the second baffle 30 along the second direction Y refers to the distance between the side of the second photoelectric sensor 50 close to the second baffle 30 along the second direction Y and the side of the second baffle 30 close to the PCB board to be detected.

[0039] It should be noted that: since the first baffle 20 and the second baffle 30 move synchronously, that is, the movement speed and the movement distance are the same, due to the different positions of the PCB boards to be detected on the conveying assembly 10, the distance difference between d1 and d2 is different, for example: please refer to Figure 2 and Figure 3 , the PCB board to be detected is closer to the second baffle plate 30 than the first baffle plate 20, or, the PCB board to be detected is closer to the first baffle plate 20 than the second baffle plate 30, and so on.

[0040] In some embodiments, when d1=d2, H=S-(d1+d2)-2d. Since the first baffle 20 and the second baffle 30 move synchronously, when d1=d2, it means that the PCB board to be detected is located in the middle position between the first baffle 20 and the second baffle 30. At this time, the first photoelectric sensor 40 and the second photoelectric sensor 50 can detect it at the same time.

[0041] In some embodiments, when |d1-d2|<d, the board to be detected does not contact the first baffle 20 or the second baffle 30, H=S-(d1+d2)-2d, and since the first baffle 20 and the second baffle 30 move synchronously, when |d1-d2|<d, it means that one of the first photoelectric sensor 40 and the second photoelectric sensor 50 detects the PCB board to be detected first, and the other detects the PCB board to be detected later, and since the trigger interval distance between the two is less than d, it means that the first photoelectric sensor 40 and the second photoelectric sensor 50 have completed the detection before the PCB board to be detected contacts the first baffle 20 or the second baffle 30.

[0042] In some embodiments, when d1-d2≥d, and the PCB to be detected contacts the second baffle 30, H=S-2×d1-d. Since the first baffle 20 and the second baffle 30 move synchronously, when d1-d2≥d, it means that the PCB to be detected is closer to the second baffle 30 than the first baffle 20, that is, the second baffle 30 is closer to the PCB to be detected, and the first baffle 20 is farther away from the PCB to be detected. Please refer to Figure 3 , when the first baffle 20 and the second baffle 30 move toward each other, the PCB to be detected is first detected by the second photoelectric sensor 50, and because the trigger interval between the second photoelectric sensor 50 and the first photoelectric sensor 40 along the second direction Y is greater than d, the second baffle 30 contacts the PCB to be detected and continues to move along the second direction Y until the first photoelectric sensor 40 on the first baffle 20 detects the PCB to be detected. Therefore, the detection width H of the PCB to be detected is S-2×d1-d.

[0043] In some embodiments, when d2-d1≥d, and the PCB to be detected contacts the first baffle 20, H=S-2×d2-d. Since the first baffle 20 and the second baffle 30 move synchronously, when d2-d1≥d, it means that the PCB to be detected is closer to the first baffle 20 than the second baffle 30, that is, the second baffle 30 is far away from the PCB to be detected, and the first baffle 20 is close to the PCB to be detected. Please refer to Figure 2 , when the first baffle 20 and the second baffle 30 move toward each other, the PCB board to be detected is first detected by the first photoelectric sensor 40, and because the trigger interval between the first photoelectric sensor 40 and the second photoelectric sensor 50 along the second direction Y is greater than d, the first baffle 20 contacts the PCB board to be detected and continues to move along the second direction Y until the second photoelectric sensor 50 on the second baffle 30 detects the PCB board to be detected. Therefore, the detection width H of the PCB board to be detected is S-2×d2-d.

[0044] In some embodiments, a second alarm system is also provided in the control component. The actual width of the board to be detected is h. The user can input the value of the actual width h of the board to be detected into the control component in advance. When |Hh|≤δ, the second alarm system does not sound an alarm. When |Hh|>δ, the second alarm system sounds an alarm. Wherein δ is the allowable error range of the width of the PCB board to be detected. The specific value of δ can be set by the user according to actual needs, and is not specifically limited in this application.

[0045] In the embodiment of the present invention, a conveying assembly 10, a first baffle 20, a second baffle 30, a first photoelectric sensor 40, a second photoelectric sensor 50 and a control assembly are provided. The conveying assembly 10 is used to convey the plate to be inspected to the inspection position along the first direction X, the first baffle 20 is provided on one side of the conveying assembly 10, the second baffle 30 is provided on the other side of the conveying assembly 10, the second baffle 30 is provided opposite to the first baffle 20, the first baffle 20 and the second baffle 30 move synchronously, and the first baffle 20 and the second baffle 30 can approach each other or depart from each other along the second direction Y, the first photoelectric sensor 40 is provided on the side of the first baffle 20 close to the plate to be inspected, and the first photoelectric sensor 40 is located at the inspection position along the vertical direction Z. The detection direction of the first photoelectric sensor 40 is toward the detection position, the second photoelectric sensor 50 is arranged on the side of the second baffle 30 close to the plate to be detected, the second photoelectric sensor 50 is located above the detection position along the vertical direction Z, the second photoelectric sensor 50 and the first photoelectric sensor 40 are opposite and spaced apart along the second direction Y, the distance between the first photoelectric sensor 40 and the second photoelectric sensor 50 along the second direction Y is greater than the width of the plate to be detected, the control component is electrically connected to the first photoelectric sensor 40 and the second photoelectric sensor 50, and a first alarm is provided in the control component The system is configured such that when at least one of the first photoelectric sensor 40 and the second photoelectric sensor 50 detects a board to be detected, the first alarm system sounds an alarm. In this configuration, when the conveying component 10 conveys the PCB board to the detection position along the first direction X, the first photoelectric sensor 40 and the second photoelectric sensor 50 respectively located on both sides of the PCB board along the second direction Y can detect the PCB board at the detection position. Since the distance between the first photoelectric sensor 40 and the second photoelectric sensor 50 along the second direction Y is greater than or equal to the width of the PCB board, under normal circumstances, when the PCB board is at the detection position, both sides of the PCB board along the second direction Y will not be detected by the first photoelectric sensor 40 and the second photoelectric sensor 50. When the PCB board turns at an angle, or in a serious case, the length and width of the PCB board are interchanged, at least one of the first photoelectric sensor 40 and the second photoelectric sensor 50 can detect the PCB board, and the first alarm system in the control component sounds an alarm. The user can adjust the turning angle of the PCB or remove the PCB board and re-convey it according to the alarm prompt, thereby reducing the situation of PCB board collision during the conveying process, thereby improving the printing efficiency.

[0046] See also Figure 4 The present invention also provides an embodiment of a detection method using the above detection device, the detection method comprising the following steps:

[0047] S1: the initial spacing distance between the first baffle and the second baffle along the second direction is S;

[0048] S2: The conveying component conveys the board to be inspected to the inspection position;

[0049] S3: The first photoelectric sensor located on the first baffle plate and the second photoelectric sensor located on the second baffle plate detect the board to be detected at the detection position;

[0050] S4: confirm whether the first photoelectric sensor and / or the second photoelectric sensor detects the board to be detected. If so, the control component issues an alarm; if not, the control component does not issue an alarm.

[0051] Among them, since the first baffle and the second baffle are at a preset spacing distance along the second direction, correspondingly, the first photoelectric sensor and the second photoelectric sensor are at a preset spacing distance along the second direction. Under normal circumstances, the two ends of the plate to be detected along the second direction will not be detected by the first photoelectric sensor and the second photoelectric sensor. When the plate to be detected turns at an angle or the length and width are interchanged, it can be detected by the first photoelectric sensor and the second photoelectric sensor. After at least one of the first photoelectric sensor and the second photoelectric sensor detects the plate to be detected, the first alarm system in the control component sounds an alarm, and the user can adjust the steering angle of the plate to be detected or remove the plate to be detected and re-convey it according to the alarm prompt, thereby reducing the collision of the plate to be detected during the conveying process, thereby improving the printing efficiency.

[0052] In some embodiments, please refer to Figure 5 The detection method further comprises the following steps:

[0053] S5: When the control component does not sound an alarm, the first baffle and the second baffle move synchronously, the first baffle drives the first photoelectric sensor to move toward the direction close to the board to be detected, and the second baffle drives the second photoelectric sensor to move toward the direction close to the board to be detected;

[0054] S6: The distance from the first photoelectric sensor to the plate to be detected along the second direction is measured to be d1, the distance from the second photoelectric sensor to the plate to be detected along the second direction is d2, the distance from the first photoelectric sensor to the first baffle along the second direction, and the distance from the second photoelectric sensor to the second baffle along the second direction are both d.

[0055] When the first photoelectric sensor and / or the second photoelectric sensor does not detect the board to be detected and the control component does not issue an alarm, the user can calculate the detection width H of the board to be detected along the second direction according to S, d1, d2 and related data of d.

[0056] In some embodiments, please refer to Figure 6 The detection method further comprises the following steps:

[0057] S7: The detection width of the board to be detected along the second direction is H. If d1=d2, the first photoelectric sensor and the second photoelectric sensor detect the board to be detected at the same time, then H=S-(d1+d2)-2d;

[0058] If |d1-d2|<d, the plate to be tested does not contact the first baffle or the second baffle, H=S-(d1+d2)-2d;

[0059] If d1-d2≥d, the plate to be detected first contacts the second baffle, and then contacts the first baffle, H=S-2×d1-d;

[0060] If d2-d1≥d, the plate to be detected first contacts the first baffle plate, and then contacts the second baffle plate, H=S-2×d2-d.

[0061] Among them, due to the different positions of the plate to be detected on the conveying assembly, the distance difference between d1 and d2 is affected by different factors. If |d1-d2|<d, the plate to be detected does not contact the first baffle or the second baffle, H=S-(d1+d2)-2d, and since the first baffle and the second baffle move synchronously, when |d1-d2|<d, it means that one of the first photoelectric sensor and the second photoelectric sensor detects the plate to be detected first, and the other detects the plate to be detected later, and since the distance between the trigger intervals of the two is less than d, it means that the first photoelectric sensor and the second photoelectric sensor have completed the detection before the plate to be detected contacts the first baffle or the second baffle.

[0062] If d1-d2≥d, and the plate to be detected contacts the second baffle, H=S-2×d1-d. Since the first baffle and the second baffle move synchronously, when d1-d2≥d, it means that the plate to be detected is closer to the second baffle relative to the first baffle, that is, the second baffle is closer to the plate to be detected, and the first baffle is farther away from the plate to be detected. During the movement of the first baffle and the second baffle approaching each other, the plate to be detected is first detected by the second photoelectric sensor, and since the triggering interval between the second photoelectric sensor and the first photoelectric sensor along the second direction is greater than d, the second baffle contacts the plate to be detected and continues to move in the second direction until the first photoelectric sensor on the first baffle detects the plate to be detected. Therefore, the detection width of the plate to be detected is H=S-2×d1-d.

[0063] If d2-d1≥d, and the plate to be detected contacts the first baffle, H=S-2×d2-d. Since the first baffle and the second baffle move synchronously, when d2-d1≥d, it means that the plate to be detected is closer to the first baffle than the second baffle, that is, the second baffle is farther away from the plate to be detected, and the first baffle is closer to the plate to be detected. During the movement of the first baffle and the second baffle approaching each other, the plate to be detected is first detected by the first photoelectric sensor, and since the triggering interval between the first photoelectric sensor and the second photoelectric sensor along the second direction is greater than d, the first baffle contacts the plate to be detected and continues to move in the second direction until the second photoelectric sensor on the second baffle detects the plate to be detected. Therefore, the detection width of the plate to be detected is H=S-2×d2-d.

[0064] In some embodiments, please refer to Figure 7 The detection method further comprises the following steps:

[0065] S8: The detection width of the board to be detected along the second direction is H, and the actual width of the board to be detected is h. If |Hh|≤δ, the control component does not issue an alarm. If |Hh|>δ, the control component issues an alarm.

[0066] Among them, δ is the allowable error range of the width of the board to be tested. If |Hh|≤δ, then it means that the difference between the actual width of the test board and the detected width is within the allowable error range, and the control component does not issue an alarm. If |Hh|>δ, then it means that the difference between the actual width of the test board and the detected width exceeds the allowable error range, and the control component issues an alarm.

[0067] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A detection device, characterized in that: include: A conveying assembly, used for conveying the board to be inspected to the inspection position along a first direction; A first baffle, disposed on one side of the conveying assembly; A first photoelectric sensor is arranged on a side of the first baffle plate close to the plate to be detected, the first photoelectric sensor is located above the detection position in the vertical direction, and the detection direction of the first photoelectric sensor is toward the detection position; A second baffle is disposed on the other side of the conveying assembly, the second baffle is disposed opposite to the first baffle along a second direction, the first baffle moves synchronously with the second baffle, and the first baffle and the second baffle can approach each other or move away from each other along the second direction; a second photoelectric sensor, arranged on a side of the second baffle plate close to the plate to be detected, the second photoelectric sensor being located above the detection position in the vertical direction, the second photoelectric sensor being opposite to and spaced from the first photoelectric sensor in the second direction, the distance between the first photoelectric sensor and the second photoelectric sensor in the second direction being greater than or equal to the width of the plate to be detected, and the second direction being perpendicular to the first direction and the vertical direction; A control component is connected to the first photoelectric sensor and the second photoelectric sensor. A first alarm system is provided in the control component. When at least one of the first photoelectric sensor and the second photoelectric sensor detects the board to be detected, the first alarm system sounds an alarm.

2. The detection device according to claim 1, characterized in that: The first baffle plate is connected to the second baffle plate via a transmission assembly, the first baffle plate and the second baffle plate move synchronously, and the first baffle plate and the second baffle plate can approach each other or move away from each other along the second direction; The initial spacing distance between the first baffle and the second baffle along the second direction is S, the distance from the first photoelectric sensor to the plate to be detected along the second direction is d1, the distance from the second photoelectric sensor to the plate to be detected along the second direction is d2, the distance from the first photoelectric sensor to the first baffle along the second direction, and the distance from the second photoelectric sensor to the second baffle along the second direction are both d, and the detection width of the plate to be detected along the second direction is H.

3. The detection device according to claim 2, characterized in that: When d1=d2, H=S-(d1+d2)-2d; When |d1-d2|<d, the plate to be inspected does not contact the first baffle or the second baffle, and H=S-(d1+d2)-2d.

4. The detection device according to claim 2, characterized in that: When d1-d2≥d, and the plate to be inspected contacts the second baffle, H=S-2×d1-d.

5. The detection device according to claim 2, characterized in that: When d2-d1≥d, and the plate to be inspected contacts the first baffle, H=S-2×d2-d.

6. The detection device according to claim 2, characterized in that: The control component is also provided with a second alarm system; The actual width of the plate to be detected is h. When |Hh|≤δ, the second alarm system does not sound an alarm. When |Hh|>δ, the second alarm system sounds an alarm.

7. A detection method using the detection device according to any one of claims 1 to 6, comprising the following steps: S1: the initial spacing distance between the first baffle and the second baffle along the second direction is S; S2: The conveying assembly conveys the board to be inspected to the inspection position; S3: the first photoelectric sensor located on the first baffle plate and the second photoelectric sensor located on the second baffle plate detect the board to be detected at the detection position; S4: confirm whether the first photoelectric sensor and / or the second photoelectric sensor detects the board to be detected. If so, the control component issues an alarm; if not, the control component does not issue an alarm.

8. The detection method according to claim 7, characterized in that: The detection method further comprises the following steps: S5: When the control component does not sound an alarm, the first baffle and the second baffle move synchronously, the first baffle drives the first photoelectric sensor to move toward the direction close to the board to be detected, and the second baffle drives the second photoelectric sensor to move toward the direction close to the board to be detected; S6: The distance from the first photoelectric sensor to the plate to be detected along the second direction is measured to be d1, the distance from the second photoelectric sensor to the plate to be detected along the second direction is d2, the distance from the first photoelectric sensor to the first baffle along the second direction, and the distance from the second photoelectric sensor to the second baffle along the second direction are both d.

9. The detection method according to claim 8, characterized in that: The detection method comprises the following steps: S7: The detection width of the board to be detected along the second direction is H. If d1=d2, the first photoelectric sensor and the second photoelectric sensor detect the board to be detected at the same time, then H=S-(d1+d2)-2d; If |d1-d2|<d, the plate to be tested does not contact the first baffle or the second baffle, H=S-(d1+d2)-2d; If d1-d2≥d, the plate to be detected first contacts the second baffle plate, and then contacts the first baffle plate, H=S-2×d1-d; If d2-d1≥d, the plate to be detected first contacts the first baffle plate, and then contacts the second baffle plate, H=S-2×d2-d.

10. The detection method according to claim 9, characterized in that: The detection method comprises the following steps: S8: The actual width of the plate to be detected is h. If |Hh|≤δ, the control component does not issue an alarm. If |Hh|>δ, the control component issues an alarm.

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