Leakage-proof cutting circuit board, detection method and detection device

Abstract

The application discloses a leakage-proof cutting circuit board, a detection method and a detection device, and relates to the technical field of circuit boards; according to the application, an S-shaped test line is arranged on the cutting groove; since the S-shaped test line comprises a plurality of lead wires penetrating the cutting position, as long as any lead wire is cut off by the cutting groove (the S-shaped test line is no longer conductive), the circuit is in an open circuit state (indicating that the cutting of the cutting groove on the circuit board meets the requirements) during testing; compared with the traditional method of arranging only one lead wire penetrating the cutting position, the two cut lead wires can be prevented from being in contact with each other by mistake, so that the circuit is conductive during testing, and false reporting is caused, the detection accuracy is improved; the S-shaped test line is used in cooperation with a detection circuit to detect the cutting of the circuit board, instead of traditional manual visual detection, and the detection efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board, in particular to a line cutting prevention circuit board, a detection method and a detection device. BACKGROUND

[0002] In the PCB production process, all the line cutting prevention circuit boards are combined and segmented to facilitate the customer to insert the board after the board is segmented; but in the actual operation process, the line cutting prevention circuit board is segmented, and the inspection is difficult to find, which leads to the decrease of the yield, the outflow of the defective product, the complaint of the customer, and the unnecessary loss of the company;

[0003] In the detection of the cutting of the cutting groove, the existing manual visual detection method is mostly used, but the manual visual detection method has high missed detection and misdiagnosis probability, and the manual visual detection method also leads to the increase of the detection process time, so that the yield of the line cutting prevention circuit board cannot be guaranteed, and the production efficiency of the line cutting prevention circuit board is reduced.

[0004] Therefore, how to accurately and efficiently detect the cutting groove of the line cutting prevention circuit board becomes a technical problem to be solved in the field of line cutting prevention circuit board. SUMMARY

[0005] The present application relates to the technical field of circuit board, in particular to a line cutting prevention circuit board, a detection method and a detection device.

[0006] In order to achieve the above-mentioned purpose, the present application provides a line cutting prevention circuit board, which comprises:

[0007] A board body has a waste area, an effective area, a cutting position is formed between the waste area and the effective area, and the cutting position is cut along the cutting position to form a cutting groove;

[0008] An S-shaped test line is arranged at the cutting position, and the S-shaped test line extends along the length direction of the cutting groove; in the perpendicular direction of the length direction of the cutting groove, the cutting position divides the S-shaped test line into a first line body and a second line body; one of the first line body and the second line body is located in the effective area, and the other is located in the waste area; and

[0009] Two test points are provided, and the two test points are respectively arranged at the two ends of the length direction of the S-shaped test line, and the test points are electrically connected with the S-shaped test line.

[0010] In an embodiment, the two test points are arranged in the waste area; or

[0011] The two test points are arranged in the effective area; or

[0012] One of the two test points is arranged in the effective area and the other is arranged in the waste area.

[0013] In an embodiment, the S-shaped test line has a plurality, and the plurality of S-shaped test lines are arranged along the length direction of the cutting position.

[0014] In an embodiment, the S-shaped test line includes at least four wires, and the at least four wires are sequentially connected end to end.

[0015] The embodiment of the present application provides a detection device for detecting the leakage-proof cutting circuit board in the above embodiment, the detection device has a Z direction extending in the vertical direction, comprising:

[0016] A frame body, the frame body has a detection position for placing the plate body;

[0017] A detection assembly movably connected to the frame body along the Z direction, the detection assembly has a detection head movable along the Z direction, the detection head is arranged corresponding to the test point, and the detection head is elastically connected to the detection assembly.

[0018] In an embodiment, the detection assembly comprises:

[0019] A lifting plate movably connected to the frame body along the Z direction; and

[0020] A first cylinder arranged on the upper end surface of the lifting plate;

[0021] A first valve plate movably arranged in the first cylinder along the Z direction, and the first valve plate is elastically connected to the first cylinder;

[0022] Two detection probes, and the two detection probes are connected to the first valve plate and extend downward from one end of the first cylinder, in the Z direction, the two detection probes penetrate the lifting plate, and the two detection probes are not in contact with the lifting plate, and the detection probes constitute the detection head;

[0023] An electric control assembly electrically connected to the detection probes.

[0024] In an embodiment, the detection device further comprises:

[0025] A second cylinder arranged on the upper end surface of the lifting plate; and

[0026] A second valve plate movably connected to the second cylinder along the Z direction, and the second valve plate is elastically connected to the second cylinder;

[0027] A first pipe having a first end in communication with the top of the first cylinder and a second end in communication with the top of the second cylinder;

[0028] a cleaning pipe having a third end communicating with the top of the second cylinder, a blow end extending downward and penetrating the lifting plate;

[0029] a first valve provided in the cleaning pipe for controlling the opening and closing of the cleaning pipe;

[0030] a one-way valve provided at the top of the first cylinder.

[0031] In an embodiment, the detection device further comprises:

[0032] a third cylinder provided at the upper end surface of the lifting plate; and

[0033] a third valve plate movably connected in the Z direction in the third cylinder, and the third valve plate is elastically connected with the third cylinder; the third valve plate is driven with a marker, and the marker penetrates the lifting plate downward in the Z direction;

[0034] a second pipe having a fourth end communicating with the top of the second cylinder and a fifth end communicating with the top of the third cylinder;

[0035] a second valve provided in the second pipe for controlling the opening and closing of the second pipe;

[0036] a third valve provided at the top of the third cylinder.

[0037] In an embodiment, the frame body has a detection table, and the upper end surface of the detection table constitutes the detection position.

[0038] The embodiment of the present application provides a detection method for detecting the leakage-proof cutting circuit board in the above embodiment, comprising the following steps:

[0039] S1: first, cutting the plate body along the cutting position to form the cutting groove on the plate body;

[0040] S2: driving the detection assembly to move downward in the Z direction so that the detection head abuts against the test point; if the S-shaped test line is open, it indicates that the cutting groove cutting process is normal; if the S-shaped test line is short-circuited, it indicates that the cutting groove cutting process is abnormal.

[0041] Compared with the prior art, the anti-leakage cutting circuit board, the detection method and the detection device have the beneficial effects that: the S-shaped test line is arranged on the cutting groove, the S-shaped test line contains a plurality of guide lines arranged through the cutting position, as long as any guide line is cut off by the cutting groove (the S-shaped test line is no longer conductive), and then in the test, the circuit is in an open circuit state (indicating that the cutting of the cutting groove on the circuit board meets the requirements); compared with the traditional arrangement of only one guide line through the cutting position, the S-shaped test line can better avoid the contact of the S-shaped test line with the copper foil exposed at both ends of the cutting groove (the cutting waste with conductive characteristics is overlapped on the copper foil exposed at both ends, so that the S-shaped test line is conductive) and the detection, the display circuit is in a short circuit state, thereby generating a false alarm condition, and the detection accuracy is improved; the S-shaped test line is used for detecting the cutting of the circuit board in cooperation with the detection circuit, instead of the traditional manual visual detection, and the detection efficiency is further improved; the scheme is suitable for pipeline detection, and the automatic detection process is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is an embodiment of the application board structure schematic diagram;

[0043] Figure 2 It is an embodiment of the application detection device in the working position state schematic diagram;

[0044] Figure 3 It is an embodiment of the application Figure 2 A structure enlarged schematic diagram in the application;

[0045] Figure 4 It is an embodiment of the application Figure 2 Another state schematic diagram of the structure after enlargement in the application;

[0046] Figure 5 It is an embodiment of the application detection device in the initial position state schematic diagram;

[0047] Figure 6 It is an embodiment of the application detection assembly, frame body separation state schematic diagram;

[0048] Figure 7 It is an embodiment of the application Figure 6 A structure enlarged schematic diagram in the application;

[0049] Figure 8 It is an embodiment of the application detection assembly bottom structure schematic diagram;

[0050] Figure 9 It is an embodiment of the application second cylinder, third cylinder cross-sectional structure schematic diagram.

[0051] In the figure, 1, board; 11, waste area; 12, effective area; 13, cutting groove; 14, guide hole;

[0052] 2. S-shaped test line; 21, first line body; 22, second line body;

[0053] 3. Test point;

[0054] 4. Frame body; 41, detection table; 411, stop post; 42, mounting plate; 43, guide post; 44, base;

[0055] 5. Detection assembly; 51, lifting plate; 52, first cylinder; 53, first valve plate; 54, detection probe rod;

[0056] 6. Cleaning assembly; 61, second cylinder; 62, second valve plate; 63, first pipe; 64, cleaning pipe; 65, first valve; 66, one-way valve; 67, nozzle;

[0057] 7. Marking assembly; 71, third cylinder; 711, third valve; 72, third valve plate; 73, marking piece; 74, second pipe; 75, second valve;

[0058] 8. Electric push rod. DETAILED DESCRIPTION

[0059] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0060] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. It should be understood that the terms "first", "second", and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0061] In the PCB production process, all the assembled circuit boards need to be cut for the convenience of customers to insert the plug-in and then cut the board (cutting grooves are cut in advance on the assembled circuit board, and when the customer cuts the board, the circuit board can be broken at the cutting groove and the cutting is completed); but in the actual operation process, due to the missing cutting of the circuit board, the inspection is difficult to find, which leads to the decrease of the yield, the outflow of the defective product, the customer complaint, and the unnecessary loss to the company; when detecting the cutting of the cutting groove, the existing manual visual detection method is mostly used, but this manual visual detection method has high missed detection and misdiagnosis probability, and the detection method using manual visual detection also leads to the increase of the detection process time, which not only leads to the unguaranteed yield of the circuit board, but also reduces the production efficiency of the circuit board; based on the above, the embodiment of the present application provides a kind of anti-missing cutting circuit board for solving the above problems.

[0062] Referring to Figure 1 The first aspect, the embodiment of the present application provides a kind of anti-missing cutting circuit board, including board body 1, S-shaped test line 2, test point 3;Wherein, board body 1 has waste area 11, effective area 12, cutting position is formed between waste area 11 and effective area 12, and cutting groove 13 is formed along the cutting position;As Figure 1 As shown, it shows that the assembled circuit board includes several sub-boards, after cutting the assembled circuit board and realizing the cutting, the effective area 12 forms the sub-board, and the waste area 11 is cut off and separated from the sub-board.

[0063] S-shaped test line 2 is arranged in the wire layer in board body 1, and S-shaped test line 2 is arranged on the cutting position;The cutting position is located at the position of each effective area 12, when cutting the assembled circuit board, cutting is carried out along the above cutting position, so that cutting groove 13 is formed at the cutting position;As Figure 1 As shown in the enlarged view, when cutting is completed at the cutting position, cutting groove 13 divides S-shaped test line 2 into first line body 21 and second line body 22, and one of first line body 21 and second line body 22 is located in effective area 12, and the other is located in waste area 11;That is, cutting groove 13 extends along the length direction of S-shaped test line 2, and divides S-shaped test line 2 into two parts, one part is located in effective area 12, and the other part is located in waste area 11;Test point 3 is provided with two, two test points 3 are respectively arranged at both ends of S-shaped test line 2 along the length direction, and test point 3 and S-shaped test line 2 are electrically connected;Exemplarily, test point 3 can be test pad, which is used for electrically connecting with detection assembly and conducting continuity test.

[0064] In the embodiment, the pattern production of the S-shaped test line 2 adopts a sine function: y = w / 2*sin(t / 4), wherein w is the width of the plate body 1, t is [0, l], and l is the length of the plate body 1; thus, the minimum positive period of the pattern of the S-shaped test line 2 is 2π / 4; the density of the arrangement of the S-shaped test line 2 on the plate body 1 is always high, and the wire material is saved; the width of the S-shaped test line 2 in the embodiment needs to be controlled within a reasonable range, and the raw material is saved and short circuit is avoided; the width of the S-shaped test line 2 is set to 0.15 mm, and the raw material is saved and short circuit is avoided; and 1 mm in length is reserved at the two ends of the S-shaped test line 2 in the length direction, for setting the test pads; when the plate body 1 is cut and needs to be detected, the detection assembly 5 is electrically contacted with the test points 3 at the two ends of the S-shaped test line 2, respectively, and whether the cutting of the plate body 1 is up to the standard can be judged by judging the on-off state of the loop; if the loop is in an open circuit state, it indicates that the cutting is in place (up to the standard); if the loop is in a short circuit state, it indicates that the cutting is not in place (not up to the standard).

[0065] In the embodiment, since the S-shaped test line 2 contains multiple curved wires, when the cutting bit completes the cutting and forms the cutting groove 13, there are multiple cut-off wires, such as Figure 1As shown in the figure, there are four cut-off points between the first wire body 21 and the second wire body 22, which are a, b, c, and d, that is, the S-shaped test line 2 is cut off at the above four points; when the board 1 is subsequently cut and detected, as long as one of the above four points is in a cut-off state, the detection result is displayed as meeting the standard; compared with the traditional test line which is only provided with one test line penetrating through the cutting groove 13, the detection accuracy is higher; because only one test line penetrating through the cutting groove 13 is provided, after the cutting of the cutting position is completed, the copper foil exposed outside the cutting groove 13 at the cut-off position of the test line may be connected together again (so that the test line is still in a conducting state), thereby causing the detection result to show a loop short circuit, and further causing a false alarm; the reason why the copper foil exposed at both ends of the cutting groove 13 may be connected together again is that during the cleaning process of the board 1, some waste materials with conductive properties generated by cutting and the copper foil exposed at both ends of the cutting groove 13 come into contact, thereby causing the test line that has been cut to be conducted again at the cutting groove 13, so that during subsequent detection, a loop short circuit condition is displayed, causing a false alarm; on the other hand, during the cleaning process of the cut board 1, the copper foil exposed at both ends of the cutting groove 13 may also be connected together again due to external force; in this embodiment, because the S-shaped test line 2 has multiple cut-off points at the cutting groove 13, the existence of multiple cut-off points greatly reduces the probability of the copper foil exposed at both ends of the cutting groove 13 being connected together again (as long as one cut-off point is in a disconnected state, that is, the copper foil at both ends of the cut-off position is not connected together, it indicates that the cutting meets the standard); thereby avoiding the display of a loop short circuit condition during subsequent testing (in fact, the test line has been cut off), so that the accuracy of the detection result is further improved, and the probability of false alarm is reduced.

[0066] Referring to Figure 1 As shown in the figure, in an embodiment of the present application, the test points 3 provided at both ends of the S-shaped test line 2 are provided in the waste area 11; or both test points 3 are provided in the effective area 12; or one of the two test points 3 is provided in the effective area 12 and the other is provided in the waste area 11; as long as the above two test points 3 can be used in cooperation with the detection assembly 5 to test whether the S-shaped test line 2 is cut off; for example, it is preferred in this embodiment to provide both test points 3 in the waste area 11, so that the arrangement of the test points 3 can reduce the occupation of the space area in the effective area 12, and help to provide more space allowance for the arrangement of related electronic components in the effective area 12.

[0067] Referring to Figure 1As shown, in an embodiment of the present application, the S-shaped test line 2 is provided in plurality, and the plurality of S-shaped test lines 2 are arranged along the length direction of the cutting position; since the cutting groove 13 is around the effective area 12, that is, the cutting groove 13 is the boundary between the effective area 12 and the waste area 11, the trend of the cutting groove 13 depends on the shape of the effective area 12, so the cutting groove 13 corresponding to each effective area 12 will contain several segments, in order to improve the accuracy of the cutting detection of the plate body 1, at least one S-shaped test line 2 is arranged on each segment of the cutting groove 13 (each S-shaped test line 2 corresponds to two test points 3), by testing the S-shaped test line 2 on each segment of the cutting groove 13, the cutting condition of the plate body 1 can be more comprehensively detected, and only when each S-shaped test line 2 on each segment of the cutting groove 13 shows an open circuit state during detection, it indicates that the cutting of the cutting groove 13 corresponding to the effective area 12 meets the standard.

[0068] Referring to Figure 1 In an embodiment of the present application, the S-shaped test line 2 includes at least four wires, and the at least four wires are connected end to end in sequence; as Figure 1 As shown in the enlarged view, the four wires included in the S-shaped test line 2 all cross the cutting groove 13, for example, the a cutting point is located on one wire, the b cutting point is located on one wire, the c cutting point is located on one wire, and the d cutting point is located on one wire; in this way, as long as any one of the above four wires is cut off at the cutting point, the detection loop will show an open circuit (indicating that the cutting meets the standard) during subsequent detection; compared with only one wire crossing the cutting groove 13, the probability of false positives during subsequent detection is greatly reduced; for example, the S-shaped test line 2 can include five, six or more wires.

[0069] In a second aspect, referring to Figures 2-9 As shown, the embodiment of the present application provides a detection device for detecting the anti-leak cutting circuit board in the above embodiment, the detection device has a Z direction extending in the vertical direction, and includes a frame body 4 and a detection assembly 5; the frame body 4 has a detection position for placing the plate body 1, and the plate body 1 is placed on the detection position when it is detected after cutting; the detection assembly is movably connected to the frame body 4 along the Z direction, and the detection assembly 5 has a detection head movable along the Z direction, the detection head is correspondingly arranged with the test point 3, that is, each detection head corresponds to one test point 3; the position of the detection head on the detection assembly 5 is correspondingly arranged with the position of the test point 3 on the plate body 1; and the detection head is elastically connected to the detection assembly 5, for example, the detection head and the detection assembly 5 are connected by a spring, and of course other structures with elastic deformation characteristics can also be used for connection.

[0070] In the embodiment, when the plate body 1 located on the detection position is detected, the detection assembly 5 is driven to move from top to bottom towards the plate body 1, so that the detection head contacts the test point 3 located on the plate body 1, the detection assembly 5 is continuously driven to move downward, so that the elastic structure (such as a spring) connected between the detection head and the detection assembly 5 is compressed to a certain extent, the detection assembly 5 is controlled to stop moving, and then the detection assembly 5 realizes the continuity test on the S-shaped test line 2 on the plate body 1 through the detection head and the test point 3. For example, since the plate body 1 is distributed with a plurality of S-shaped test lines 2, two detection heads (forming a detection unit) are needed for continuity test of each S-shaped test line 2. Therefore, a plurality of detection units (including two detection heads) are arranged on the detection assembly 5, and the positions of the detection units relative to the detection assembly 5 are arranged according to the test points 3 arranged at both ends of the S-shaped test line 2 on the plate body 1. As long as the detection assembly 5 moves from top to bottom and the elastic structure connected between the detection assembly 5 and the detection head is compressed to a certain extent, each detection head can tightly contact the corresponding test point 3.

[0071] In the embodiment, the elastic structure is arranged between the detection head and the detection assembly 5, which is used to ensure that each detection head can tightly contact the corresponding test point 3 after the detection assembly 5 moves downward to a preset distance, and can also avoid that the detection head applies too much abutting force on the test point 3 due to too large downward movement distance of the detection assembly 5, so as to avoid damage to the plate body 1.

[0072] Referring to Figures 2-9 In the embodiment, the detection assembly 5 includes a lifting plate 51, a first cylinder 52, a first valve plate 53, a detection probe 54 (which is a conductive structure), and an electric control assembly. The lifting plate 51 is movably connected to the frame 4 along the Z direction. For example, the frame 4 includes a base 44, guide columns 43, and a mounting plate 42. As shown in Figure 6 The four corners of the base 44 are respectively provided with guide columns 43 extending along the Z direction. The lifting plate 51 is provided with holes corresponding to the guide columns 43, so that the lifting plate 51 is movably connected to the base 44 along the Z direction. The upper end of each guide column 43 is fixedly connected with the mounting plate 42. The mounting plate 42 is fixedly connected with the electric push rod 8, and the telescopic end of the electric push rod 8 is fixedly connected with the lifting plate 51, so as to drive the lifting plate 51 to move along the Z direction. As shown in Figure 3As shown, the first cylinder 52 is fixedly installed on the upper end face of the lifting plate 51 (the first cylinder 52 is fixedly installed on the lifting plate 51 through a rod, only the structure of the first cylinder 52 is shown in the figure, and the rod for fixing the first cylinder 52 is not shown, and those skilled in the art can arrange the rod accordingly according to the actual situation to fix the first cylinder 52 on the upper end face of the lifting plate 51), a first valve plate 53 is movably connected in the first cylinder 52 along the Z direction, and an elastic structure (such as a spring) is connected between the upper end of the first valve plate 53 and the first cylinder 52; as Figure 7 As shown, the first valve plate 53 includes a valve plate and a valve rod connected to the valve plate, the valve rod extends downward out of the first cylinder 52, and two detection probes 54 (insulatedly connected between the valve rod and the detection probe 54) are fixedly connected to the end of the cylinder extending downward, and the detection probe 54 constitutes a detection head; the electric control assembly includes a battery pack and a wire, the battery pack is used to provide power, and the wire is used to be electrically connected with the detection probe 54; for example, the electric control assembly can be provided with multiple groups, that is, each S-shaped test line 2 corresponds to an electric control assembly; as Figure 8 As shown, the detection probe 54 penetrates the lifting plate 51 along the Z direction; for example, a hole for allowing the detection probe 54 to pass through is provided on the lifting plate 51, and the detection probe 54 is spaced apart from the inner wall of the hole (without contact).

[0073] In this embodiment, as shown, Figure 5 When the detection assembly 5 (that is, the lifting plate 51) is not in the detection state, the detection probe 54 is located above the plate body 1 at this time; when detection is needed, the lifting plate 51 is driven to move from top to bottom by the electric push rod 8, thereby synchronously driving the first cylinder 52, the first valve plate 53, and the detection probe 54 to move downward, so that the bottom of the detection probe 54 abuts against the test point 3; after the detection probe 54 is driven to move downward by the electric push rod 8 for a certain distance, the electric push rod 8 is controlled to stop working; when the bottom of the detection probe 54 abuts against the test point 3, the elastic structure connected between the first cylinder 52 and the first valve plate 53 is squeezed to a certain extent, at this time, the detection probe 54 is tightly abutted on the test point 3 under the action of the elastic structure, and the close contact between the detection probe 54 and the test point 3 is ensured; then the battery pack is controlled to supply power, if no current is detected in the loop, it indicates that the S-shaped test line 2 is cut off (cutting is up to standard); if current is detected in the loop (for example, in order to avoid excessive current caused by short circuit of the line and safety accidents, a resistor can be connected in series in the loop), it indicates that the S-shaped test line 2 is not cut off (cutting is not up to standard); as Figure 3 As shown, after the lifting plate 51 moves downward by a predetermined distance, the detection probe 54 abuts against the test point 3, and the state diagram is as follows, Figure 4 As shown, when the detection probe 54 has not contacted the test point 3, the state diagram is as follows.

[0074] In this embodiment, a detection platform 41 is provided on the base 44. The upper surface of the detection platform 41 forms a detection position for placing the plate 1. Stop posts 411 are provided at the four corners of the detection platform 41, and contact sensors are provided on the upper surfaces of the stop posts 411 (the contact sensors and the electric push rod 8 are both communicatively connected to a central controller). Figure 3 As shown, when the lifting plate 51 moves downward under the drive of the electric push rod 8, so that the lower end surface of the lifting plate 51 abuts against the upper end surface of the stop post 411, the contact sensor detects that the lifting plate 51 has moved to the preset position, and the central controller controls the electric push rod 8 to stop extending; Figure 1 As shown, a guide hole 14 (with an inner diameter slightly larger than or the same as the diameter of the guide post 43) can be pre-set at a corresponding position on the plate 1 (in the waste area 11) to cooperate with the stop post 411. This allows the plate 1 placed on the detection position to be positioned by the cooperation of the stop post 411 and the guide hole 14, thus preventing displacement. After the detection is completed, the electric push rod 8 is controlled to retract and drive the lifting plate 51 to move upward to the initial position, thereby causing the bottom of the detection probe 54 to disengage from the test point 3 for detection of the next plate 1.

[0075] Reference Figures 3-7 As shown, in one embodiment of this application, the detection device further includes a cleaning component 6, which includes a second cylinder 61, a second valve plate 62, a first pipe 63, a cleaning pipe 64, a first valve 65, and a one-way valve 66; wherein, the second cylinder 61 is also fixedly installed on the upper end face of the lifting plate 51 (the specific fixing structure can adopt the same fixing method as the first cylinder 52, which is not shown in the figure), as... Figure 3 As shown, a second valve plate 62 is movably connected within the second cylinder 61 along the Z-direction. The second valve plate 62 and the second cylinder 61 are elastically connected (the two are connected by an elastic structural component, such as a spring). The first pipe 63 has a first end and a second end, wherein the first end communicates with the top of the first cylinder 52, and the second end communicates with the top of the second cylinder 61. The cleaning pipe 64 has a third end and a blowing end, wherein the third end communicates with the top of the second cylinder 61. The cleaning pipe 64 penetrates downward through the lifting plate 51 and is provided with a blowing end, such as... Figure 8As shown, the blowing end comprises a nozzle 67 communicated with the bottom of the cleaning pipe 64, and the exemplary nozzle 67 can be provided with a plurality of nozzles 67, and each nozzle 67 faces a different direction; a first valve 65 is arranged on the cleaning pipe 64, and the first valve 65 is used to control the opening and closing of the cleaning pipe 64; a one-way valve 66 is arranged at the top of the first cylinder 52, and the one-way valve 66 can only allow external gas to enter the first cylinder 52, and the gas in the first cylinder 52 cannot be discharged to the outside from the one-way valve 66 (thereby arranged, when the lifting plate 51 moves upward under the action of the electric push rod 8, the first valve plate 53 moves towards the bottom of the first cylinder 52 under the action of the elastic structure connected thereto, thereby the gas in the external environment is drawn into the first cylinder 52 through the one-way valve 66, for cooperating with the movement of the first valve plate 53 in the first cylinder 52), and the bottom of the first cylinder 52 and the bottom of the second cylinder 61 are communicated with the outside.

[0076] In the embodiment, the electric push rod 8 drives the lifting plate 51 to move from top to bottom, so that the detection probe 54 abuts against the test point 3, and as the lifting plate 51 continues to move downward, the first valve plate 53 moves in the first cylinder 52 towards the direction of compressing the elastic structure, and as the first valve plate 53 moves, the gas in the space above the first valve plate 53 is simultaneously compressed into the second cylinder 61 through the first pipe 63, and as the gas enters, the second valve plate 62 moves in the second cylinder 61 towards the direction of compressing the elastic structure (i.e. downward); so that the lifting plate 51 moves to a preset position; as shown, Figure 3 At this time, the second valve plate 62 moves in the second cylinder 61 by a certain distance (at this time, the first valve 65 arranged on the cleaning pipe 64 is in a closed state); if it is detected at this time that the loop is in an open state, it indicates that the cutting groove 13 meets the standard, and the lifting plate 51 can be controlled to move upward to the initial position, thereby completing the detection of the plate body 1; as an example, because the test meets the standard, when the electric push rod 8 drives the lifting plate 51 to move upward, the first valve plate 53 moves in the first cylinder 52 towards the direction of approaching the bottom of the first cylinder 52 under the action of the elastic structure, so that the gas originally compressed into the second cylinder 61 is re-pumped into the first cylinder 52, and when the first valve plate 53 moves to the initial position in the first cylinder 52, the second valve plate 62 also moves to the initial position in the second cylinder 61.

[0077] If the circuit is in a short circuit state at this time, it indicates that the S-shaped test line 2 is not cut off (there are two cases, one case: the S-shaped test line 2 is indeed not cut off, the cutting groove 13 is not up to standard; another case: the S-shaped test line 2 is cut off, and the copper foil exposed at both ends of the cutting groove 13 is slightly connected together); at this time, the first valve 65 provided on the cleaning pipe 64 is opened, and the second valve plate 62 is quickly moved upward in the second cylinder 61 under the action of the elastic structure, so that the gas pressed into the second cylinder 61 is sequentially blown out through the cleaning pipe 64 and the nozzle 67. For example, when the lifting plate 51 is moved downward by a predetermined distance, that is, in the position shown in FIG. 6, the nozzle 67 is just spaced apart from the upper end surface of the plate body 1 by a slight distance (it is necessary to ensure that the nozzle 67 does not contact and collide with the upper end surface of the plate body 1), and the nozzle 67 is directed towards the position where the S-shaped test line 2 is cut off by the cutting groove 13; at this time, since the lifting plate 51 is still in the position shown in FIG. 6 (the detection probe 54 abuts against the test point 3), the first valve plate 53 cannot move in the first cylinder 52, so that when the second valve plate 62 moves upward in the second cylinder 61, the gas in the second cylinder 61 is pressed into the cleaning pipe 64, and is blown out through the nozzle 67 connected to the bottom of the cleaning pipe 64 towards the S-shaped test line 2, for re-washing the cut-off position of the S-shaped test line 2 by the cutting groove 13, so as to blow away the conductive waste material overlapped on the copper foil exposed at both ends of the cutting groove 13; after the second valve plate 62 moves to the initial position in the second cylinder 61, the first valve 65 is controlled to be closed again, and the lifting plate 51 is driven upward by the electric push rod 8, so as to move to the initial position (as shown in FIG. 5), and then the electric push rod 8 is controlled to drive the lifting plate 51 to move downward again, so as to move to the position shown in FIG. 6, for re-inspecting (second detection) the S-shaped test line 2; if the circuit is in an open circuit state during the re-inspection (second detection), it indicates that there is indeed conductive waste material overlapped on the copper foil exposed at both ends of the cutting groove 13 during the first detection; if the circuit is still in a short circuit state, it indicates that the S-shaped test line 2 is not cut off, that is, the cutting of the cutting groove 13 is not up to standard (not up to standard). Figure 3 Figure 3 Figure 5 Figure 2

[0078] Figures 2-9 ​​​​​As shown, in an embodiment of the present application, the detection device further comprises a marking assembly, which comprises a third cylinder 71, a third valve plate 72, a second pipe 74, a second valve 75 and a third valve 711; wherein the third cylinder 71 is fixedly installed on the upper end face of the lifting plate 51 (the specific fixing structure can adopt the same fixing mode as the first cylinder 52, which is not shown in the figure), the third valve plate 72 is movably connected in the Z direction in the third cylinder 71, and the third valve plate 72 and the third cylinder 71 are elastically connected (connected through elastic structural members therebetween, such as springs); the top of the second cylinder 61 and the top of the third cylinder 71 are communicated with the second pipe 74 (the second pipe 74 has a fourth end communicated with the top of the second cylinder 61 and a fifth end communicated with the top of the third cylinder 71), and the second pipe 74 is provided with the second valve 75 (in communication connection with the central controller) for controlling the opening and closing of the second pipe 74; the third valve plate 72 comprises a valve plate and a valve rod, the valve plate and the valve rod are connected, and the bottom of the valve rod extends downward beyond the bottom of the third cylinder 71 (the bottom of the third cylinder 71 is provided with a hole for the valve rod to extend downward, and the inner diameter of the hole is greater than the outer diameter of the valve rod, that is, the bottom of the third cylinder 71 is in communication with the external environment); the valve rod extends outward beyond one end of the third cylinder 71 and is provided with a marking member 73, which is exemplarily a marking pen (such as a water-based marking pen, which can be easily erased when not needed); the third valve 711 (in communication connection with the central controller) is arranged at the top of the third cylinder 71 for controlling the communication between the space in the third cylinder 71 above the third valve plate 72 and the external environment; a hole for the marking member 73 to pass through is provided in the lifting plate 51 in the Z direction (the outer periphery of the marking member 73 and the inner wall of the hole are spaced apart, that is, they do not touch).

[0079] In the embodiment, if the loop display is still in a short circuit state when the plate body 1 is rechecked (second detection), it indicates that the cutting of the plate body 1 is not up to standard and needs to be cut again; specifically: when rechecking, if the loop display is still in a short circuit state, the second valve 75 arranged on the second pipe 74 is opened (the first valve 65 remains in a closed state), at this time the second valve plate 62 is driven to move upward rapidly in the second cylinder 61 under the action of the elastic structural members connected thereto, thereby the gas in the space above the second valve plate 62 is pressed into the third cylinder 71 through the second pipe 74, and the third valve plate 72 is forced to move downward in the third cylinder 71, so that the marking member 73 moves downward, and the marking member 73 leaves marks on the upper surface of the plate body 1 (for marking the cutting groove 13 which does not meet the standard); it should be noted that when the bottom of the marking member 73 abuts against the upper surface of the plate body 1, the marking member 73 cannot continue to move downward, so at this time the second valve plate 62 and the third valve plate 72 cannot continue to move.

[0080] In the embodiment, if the circuit shows open circuit state when the plate body 1 is rechecked (secondary detection), it indicates that the S-shaped test line 2 is in an open state at this time, that is, it means that the short circuit during the first detection is because there is indeed conductive waste generated by cutting that connects the exposed copper foil at both ends of the cutting groove 13, and the S-shaped test line 2 is turned on; at this time, the marking member 73 no longer needs to be marked, at this time, the first valve 65 provided on the cleaning pipe 64 can be controlled to be opened, for discharging the gas pressed into the second cylinder 61 from the nozzle 67 (then the lifting plate 51 carried by the electric push rod 8 is moved to the initial position); or the lifting plate 51 carried by the electric push rod 8 can be directly moved to the initial position, as the lifting plate 51 moves upward, the first valve plate 53 moves towards the bottom of the first cylinder 52 under the action of the elastic structure, and then the gas originally pressed into the second cylinder 61 is withdrawn into the first cylinder 52 again.

[0081] In the embodiment, the projection of the marking member 73 in the Z direction can be located in the effective area 12 or the waste area 11, in any case, it needs to be arranged near the S-shaped test line 2, so that the mark left by the marking member 73 is located in the effective area 12 or the waste area 11 near the S-shaped test line 2, to facilitate subsequent workers to perform secondary cutting processing on the cutting groove 13 that does not meet the standard; as a preferred, the projection of the marking member 73 in the Z direction is located in the effective area 12, because the area on the lifting plate 51 corresponding to the effective area 12 is larger, which is beneficial to the layout of the positions of the first cylinder 52, the second cylinder 61 and the third cylinder 71.

[0082] In the embodiment, when the marking member 73 abuts against the upper surface of the plate body 1 and completes the marking, at this time, the third valve 711 is controlled to be opened, so that the gas in the space above the second valve plate 62 is discharged outward through the third valve 711; then the lifting plate 51 carried by the electric push rod 8 is controlled to move upward, so as to move to the initial position; so that the first valve plate 53, the second valve plate 62 and the third valve plate 72 all return to the initial position, then the second valve 75 provided on the second pipe 74 and the third valve 711 provided at the top of the third cylinder 71 are controlled to be closed; in the embodiment, the position relationship of the first cylinder 52, the second cylinder 61 and the third cylinder 71 cooperates with the extension direction of the S-shaped test line 2 on the plate body 1 and is correspondingly matched.

[0083] In the scheme, the detection probe 54 is fixedly installed on the first valve plate 53, and the first valve plate 53 is elastically connected in the first cylinder 52. On the one hand, elastic contact is achieved between the detection probe 54 and the test point 3 on the plate body 1, so that the contact between the detection probe 54 and the test point 3 is more closely fitted, and the situation that irreversible damage to the plate body 1 occurs due to excessive abutting force between the detection probe 54 and the test point 3 caused by the electric push rod 8 driving the lifting plate 51 to move downward too far is avoided. Through the cooperation between the first valve plate 53 and the first cylinder 52, the movement of the gas between the first cylinder 52, the second cylinder 61 and the second cylinder 61, the third cylinder 71 is driven by the movement of the first valve plate 53 in the first cylinder 52, and the S-shaped test line 2 on the plate body 1 is cut by the cutting groove 13. Secondary blowing (for re-inspection) is performed on the cut part of the S-shaped test line 2 by the cutting groove 13, and the cutting groove 13 that does not meet the cutting requirements is marked. That is, the precision detection of the cutting of the plate body 1 is completed, and the cutting groove 13 that does not meet the cutting requirements is marked (for subsequent secondary cutting treatment by the staff).

[0084] In a third aspect, the embodiments of the present application also provide a detection method, which adopts the detection device in the above embodiments and includes the following steps.

[0085] S1: First, the plate body 1 is cut along the cutting position to form a cutting groove 13 on the plate body 1, and the cutting groove 13 divides the plate body 1 into an effective area 12 and a waste area 11.

[0086] S2: In the Z direction, the detection assembly 5 is driven to move downward, so that the detection head abuts against the test point 3. If the S-shaped test line 2 is open, it indicates that the cutting groove 13 is normally cut (cut to standard); if the S-shaped test line 2 is short-circuited, it indicates that the cutting groove 13 is abnormally cut.

[0087] At this time, there are two cases. The first case is that the S-shaped test line 2 is not actually cut (cutting does not meet the standard); the second case is that the S-shaped test line 2 is actually cut, but during cleaning, the cutting waste with conductive properties is overlapped on the exposed copper foil at both ends of the cutting groove 13, so that the S-shaped test line 2 is conducted again. At this time, the plate body 1 can be re-inspected (secondarily detected). During the upward movement of the lifting plate 51 driven by the electric push rod 8, the S-shaped test line 2 cut by the cutting groove 13 is blown again by the nozzle 67. Then, during the re-inspection, according to the re-inspection result, whether the marking member 73 is marked is controlled.

[0088] In summary, the application sets the S-shaped test line 2 on the cutting groove 13. Since the S-shaped test line 2 contains multiple wires passing through the cutting position, as long as any wire is cut off by the cutting groove 13 (the S-shaped test line 2 is no longer conductive), the circuit is in an open circuit state during testing (indicating that the cutting of the cutting groove 13 on the circuit board meets the requirements). Compared with the traditional method of setting only one wire passing through the cutting position, the S-shaped test line 2 can better avoid the situation that the S-shaped test line 2 is in contact with the copper foil exposed at both ends of the cutting groove 13 (the cutting waste with conductive characteristics is connected to the copper foil exposed at both ends, and the S-shaped test line 2 is conductive) and is detected in a short-circuit state, thereby improving the accuracy of detection. The application uses the S-shaped test line 2 in cooperation with the detection circuit to detect the cutting of the circuit board, instead of the traditional manual visual detection, further improving the detection efficiency.

[0089] The above is only the preferred embodiment of the application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the application. These improvements and substitutions should also be considered within the scope of protection of the application.

Claims

1. A detection device for detecting a no-cutting leakage circuit board, the no-cutting leakage circuit board comprising: a board body (1) having a waste area (11) and an effective area (12), a cutting position being formed between the waste area (11) and the effective area (12), and a cutting groove (13) being formed by cutting along the cutting position; an S-shaped test line (2) being arranged at the cutting position and extending along the length direction of the cutting groove (13); the cutting position divides the S-shaped test line (2) into a first line body (21) and a second line body (22) in a direction perpendicular to the length direction of the cutting groove (13); one of the first line body (21) and the second line body (22) is located in the effective area (12), and the other is located in the waste area (11); and two test points (3) corresponding to the two ends of the S-shaped test line (2) in the length direction, and the test points (3) are electrically connected with the S-shaped test line (2), characterized in that the detection device has a Z direction extending in a vertical direction, and the detection device comprises: a frame body (4) having a detection position for placing the board body (1); a detection assembly (5) movably connected to the frame body (4) in the Z direction, the detection assembly (5) having a detection head movable in the Z direction, the detection head being arranged corresponding to the test points (3), and the detection head being elastically connected with the detection assembly (5); the detection assembly (5) comprises: a lifting plate (51) movably connected to the frame body (4) in the Z direction; and a first cylinder (52) arranged at the upper end surface of the lifting plate (51); a first valve plate (53) movably arranged in the first cylinder (52) in the Z direction, and the first valve plate (53) being elastically connected with the first cylinder (52); two detection probes (54) connected to one end of the first valve plate (53) extending downward out of the first cylinder (52), and the two detection probes (54) penetrating through the lifting plate (51) in the Z direction, and the two detection probes (54) not being in contact with the lifting plate (51), the detection probes (54) constituting the detection head; an electric control assembly electrically connected with the detection probes (54); and the detection device further comprises a cleaning assembly (6), the cleaning assembly (6) comprising: a second cylinder (61) arranged at the upper end surface of the lifting plate (51); and a second valve plate (62) movably connected in the second cylinder (61) in the Z direction, and the second valve plate (62) being elastically connected with the second cylinder (61); and a first pipe (63) having a first end in communication with the top of the first cylinder (52) and a second end in communication with the top of the second cylinder (61). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A cleaning pipe (64) is arranged on the second cylinder (61) and has a third end communicating with the top of the second cylinder (61) and a blowing end extending downward and penetrating the lifting plate (51); the blowing end is used for blowing the S-shaped test line (2) cut by the cutting groove (13) to blow off the conductive waste material overlapped on the exposed copper foil at both ends of the cutting groove (13); then the S-shaped test line (2) is rechecked to determine whether the S-shaped test line (2) is cut off; A first valve (65) is arranged on the cleaning pipe (64) and used for controlling the opening and closing of the cleaning pipe (64); A one-way valve (66) is arranged on the top of the first cylinder (52).

2. The detection device of claim 1, wherein The detection device further comprises a marking assembly (7), wherein the marking assembly (7) comprises: A third cylinder (71) is arranged on the upper end surface of the lifting plate (51); and A third valve plate (72) is movably connected to the third cylinder (71) along the Z direction and elastically connected to the third cylinder (71); the third valve plate (72) is driven by a marking piece (73), and the marking piece (73) penetrates the lifting plate (51) downward along the Z direction; A second pipe (74) has a fourth end communicating with the top of the second cylinder (61) and a fifth end communicating with the top of the third cylinder (71); A second valve (75) is arranged on the second pipe (74) and used for controlling the opening and closing of the second pipe (74); A third valve (711) is arranged on the top of the third cylinder (71).

3. The detection device of claim 2, wherein, The detection bench (41) is arranged on the frame (4), and the upper end surface of the detection bench (41) constitutes the detection position.

4. The detection device of claim 1, wherein, Both the test points (3) are arranged in the waste area (11); or Both the test points (3) are arranged in the effective area (12); or One of the test points (3) is arranged in the effective area (12) and the other is arranged in the waste area (11).

5. The detection device of claim 1, wherein, The S-shaped test line (2) has a plurality of S-shaped test lines (2) arranged at intervals along the length direction of the cutting position.

6. The detection device of claim 1, wherein, The S-shaped test line (2) comprises at least four wires, and the at least four wires are sequentially connected end to end.

7. A detection method using the detection device according to claim 1, characterized by, The method comprises the following steps: S1: first cutting the plate along the cutting position to form the cutting groove on the plate; S2: driving the detection assembly to move downward along the Z direction so that the detection head abuts against the test point; if the S-shaped test line is open, it indicates that the cutting groove cutting process is normal; if the S-shaped test line is short-circuited, it indicates that the cutting groove cutting process is abnormal.

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