PCB correcting device

Abstract

The utility model provides a PCB (printed circuit board) correcting device, which comprises a main body, a detection mechanism and a correcting part, a rack of the main body is provided with an accommodating position for fixing a PCB, the correcting part is movably arranged on the rack and is electrically connected with a controller of the main body, the detection mechanism comprises a moving part and a pressure sensor arranged on the moving part, and the pressure sensor is electrically connected with the controller of the main body. The moving part is movably arranged on the machine frame and arranged on one side of the containing position and can move in the direction close to or away from the containing position on the main body, the pressure sensor is used for abutting against the bending area of the PCB in the containing position, and a controller of the main body obtains the moving distance of the moving part according to signals of the pressure sensor. And according to the moving distance signal, the correcting piece is controlled to move towards the accommodating position on the main body and abut against the surface of the PCB, so that the PCB is pushed to be bent in the direction opposite to the bending direction, and the PCB is recovered to be flat. Through the arrangement, the PCB correction device can automatically correct the PCB, the correction efficiency and the correction accuracy of the PCB are improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the field of LED display production equipment, in particular to a PCB board correction device. Background Art

[0002] The core component of an LED display is a PCB lamp drive board (hereinafter referred to as a PCB board or a circuit board). The PCB board has a double-sided circuit structure, that is, LED lamp beads are mounted on the front side of the PCB board, and components such as ICs are mounted on the back side. Its manufacturing process is that components such as ICs are first mounted and welded on the back side of the PCB board, and then the PCB board is turned over and lamp beads are mounted and welded on the front side. It needs to go through two high-temperature welding processes. During the first high-temperature welding of the IC, the PCB board will deform under the action of high temperature, which will affect the mounting accuracy of the lamp beads in the next process. When the deformation is serious, it will even affect the mounting in some areas.

[0003] When the PCB board is deformed, it is necessary to manually bend the board to correct the bent PCB board. Manual bending of the board is time-consuming and laborious, and it is easy to get tired. Moreover, there is no standard basis for manual bending of the board, and it can only be judged by visual observation whether the PCB board is corrected to a flat state, resulting in poor correction effect. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that when the existing PCB board is deformed, manual bending is required for correction, resulting in poor correction effect.

[0005] To solve the above technical problems, the utility model provides a PCB board correction device, which includes a main body, a detection mechanism and a correction member; the main body includes a frame and a controller, and the frame is provided with a placement position for fixing the PCB board to be corrected; the detection mechanism includes a moving member and a pressure sensor arranged on the moving member, and both the moving member and the pressure sensor are electrically connected to the controller; the moving member is movably arranged on the frame and is arranged on one side of the placement position to relatively approach or move away from the placement position; the pressure sensor is arranged on the moving member and is used to abut against the bent area of the PCB board in the placement position, and the controller obtains the moving distance of the moving member according to the signal of the pressure sensor; the correction member is movably arranged on the frame; the correction member is electrically connected to the controller, and the controller can control the correction member to move a set displacement according to the moving distance signal of the moving member, so that the end of the correction member abuts against the surface of the PCB board to make the PCB board flat again.

[0006] In some embodiments of the present application, the moving member includes a first moving component and a first motor electrically connected to the controller. The first motor is fixed on the frame, the first moving component is connected to the first motor, the pressure sensor is disposed on the first moving component, and is capable of moving in a direction close to or away from the accommodating position under the drive of the first motor.

[0007] In some embodiments of the present application, the first moving component includes a first lead screw and a first slider. The first lead screw is rotatably connected to the frame and is in transmission connection with the first motor. The first slider is slidably connected to the frame and is threadedly connected to the first lead screw. The pressure sensor is fixed on the first slider.

[0008] In some embodiments of the present application, the frame includes a first guide rail. The length direction of the first guide rail faces the accommodating position, and the first slider is slidably connected to the first guide rail.

[0009] In some embodiments of the present application, the correcting member includes a second motor, a second moving component, a pressing rod and a second motor electrically connected to the controller. The second motor is fixed on the frame, the second moving component is connected to the second motor, the pressing rod is disposed on the second moving component, and is capable of moving in a direction close to or away from the accommodating position under the drive of the second motor; the controller can control the moving distance of the pressing rod driven by the second motor according to the moving distance signal of the moving member; and the controller can control the stagnation setting time of the pressing rod driven by the second motor at the maximum value of the moving distance according to the moving distance of the moving member.

[0010] In some embodiments of the present application, the second moving component includes a second lead screw and a second slider. The second lead screw is rotatably connected to the frame and is in transmission connection with the second motor. The second slider is slidably connected to the frame and is threadedly connected to the second lead screw. The pressing rod is fixed on the second slider.

[0011] In some embodiments of the present application, the frame includes a second guide rail. The length direction of the second guide rail faces the accommodating position, and the second slider is slidably connected to the second guide rail.

[0012] In some embodiments of the present application, the correcting member is disposed on one side of the accommodating position; or the correcting members are disposed on both sides of the accommodating position.

[0013] In some embodiments of the present application, the main body further includes a clamping member, which includes a driving structure and a top block. The driving structure is connected to the frame, the top block is connected to the movable end of the driving structure, and the driving structure can drive the top block to move towards or away from the accommodating position, so that the top block abuts against the edge of the PCB board.

[0014] In some embodiments of the present application, the frame includes a first housing and a second housing. The first housing is fixedly connected to the second housing, and the first housing is provided with a stepped surface on the side facing the second housing. A accommodating position for accommodating the PCB board is formed between the stepped surface and the second housing.

[0015] As can be seen from the above technical solutions, the beneficial effects of the present utility model are as follows: The PCB board correction device of the present application includes a main body, a detection mechanism and a correction member. A accommodating position for fixing the PCB board is provided on the frame of the main body. The correction member is movably arranged on the frame and is electrically connected to the controller of the main body. The detection mechanism includes a moving member and a pressure sensor arranged on the moving member. The moving member is movably arranged on the frame and is arranged on one side of the accommodating position, and can move in a direction close to or away from the accommodating position on the main body. The pressure sensor is used to abut against the bent area of the PCB board in the accommodating position. The controller of the main body obtains the moving distance of the moving member according to the signal of the pressure sensor, and controls the correction member to move towards the accommodating position on the main body and abut against the surface of the PCB board according to the moving distance signal, so as to push the PCB board to bend in the opposite direction of the bend and make the PCB board flat again. With such a setting, the PCB board correction device of the present application can automatically correct the PCB board, improve the correction efficiency and accuracy of the PCB board, and reduce the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a PCB board correction device in an embodiment.

[0017] Figure 2 is Figure 1 a top view structural diagram of

[0018] Figure 3 is Figure 2 a sectional structural diagram of

[0019] Figure 4 is Figure 1 a partial enlarged view at A.

[0020] Figure 5 is Figure 1 a partial enlarged view at B.

[0021] Figure 6 is a flowchart of the PCB board correction device correcting the PCB board.

[0022] The description of the reference numerals is as follows: 1 - main body; 11 - frame; 111 - first housing; 112 - second housing; 113 - first guide rail; 114 - second guide rail; 1111 - accommodating position; 12 - controller; 13 - clamping member; 131 - driving structure; 132 - top block; 2 - detection mechanism; 21 - moving member; 211 - first motor; 212 - first moving assembly; 2121 - first lead screw; 2122 - first slider; 22 - pressure sensor; 3 - correction member; 31 - second motor; 32 - second moving assembly; 321 - second lead screw; 322 - second slider; 33 - pressing rod. Detailed implementation manners

[0023] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model.

[0024] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front, and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0026] The PCB board correction device of the present application is mainly used to correct PCB boards that are bent in the middle. In a PCB board with a double-sided circuit structure, the manufacturing process is that components such as ICs are first mounted and soldered on the back of the PCB board, and then the PCB board is turned over and lamp beads are mounted and soldered on the front. It needs to go through two high-temperature soldering processes. During the first high-temperature soldering of components such as ICs, the PCB board will deform under the action of high temperature. When the deformation is severe, it will even affect the local area and make it impossible to achieve mounting. Among them, during the first high-temperature soldering of components such as ICs, since components such as ICs are distributed in the middle of the PCB board, and the edges of the PCB board are abutted against the conveying structure of the soldering equipment, the stress on the PCB board is relatively uniform. Moreover, the PCB boards that are deformed during the first high-temperature soldering of ICs are basically bent in the middle position.

[0027] Of course, the PCB board correction device of the present application can also be used for correcting the middle bending of PCB boards during production, and can also be used for leveling other PCB boards, such as metal thin plates, plastic plates, etc.

[0028] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the PCB board correction device includes a main body 1, a detection mechanism 2 and a correction part 3. The main body 1 includes a frame 11 and a controller 12. The controller 12 can be fixed on the frame 11 or can be arranged independently of the frame 11. The controller 12 is the main control component of the PCB board correction device.

[0029] The frame 11 is provided with a receiving position 1111, and the PCB board is installed in the receiving position 1111. The detection mechanism 2 and the correction part 3 are installed on the frame 11, and the positions of the detection mechanism 2 and the correction part 3 correspond to the position of the receiving position 1111, so that the detection mechanism 2 can detect the bending degree of the PCB board located in the receiving position 1111. The detection mechanism 2 includes a moving part 21 and a pressure sensor 22. The moving part 21 is movably arranged on the frame 11 and is arranged on one side of the receiving position 1111, and can move in a direction close to or away from the receiving position 1111 on the main body 1. The pressure sensor 22 is used to abut against the bending area of the PCB board in the receiving position 1111. The controller 12 obtains the moving distance of the moving part 21 according to the signal of the pressure sensor 22, and controls the correction part 3 to move towards the receiving position 1111 on the main body 1 and abut against the surface of the PCB board according to the moving distance signal, so as to push the PCB board to bend in the opposite direction of the bend and make the PCB board flat again. Among them, the controller 12 forms a bending degree signal of the PCB board according to the moving distance of the moving part 21, and controls the correction part 3 to work automatically according to the bending degree signal, thereby realizing automatic correction of the PCB board, improving the correction efficiency and accuracy of the PCB board, and reducing the labor intensity.

[0030] The frame 11 includes a first housing 111, a second housing 112, and a clamping member 13. The first housing 111 is fixedly connected to the second housing 112, and the first housing 111 is provided with a stepped surface on the side facing the second housing 112. A receiving position 1111 for accommodating the PCB board is formed between the stepped surface and the second housing 112. Among them, the second housing 112 can be arranged on the left or right side of the first housing 111 to form a horizontal PCB board correction device; the second housing 112 can be arranged above the first housing 111 to form a vertical PCB board correction device.

[0031] In Figure 1 the illustrated embodiment, the second housing 112 is arranged on the right side of the first housing 111. The first housing 111 is a box structure with a hollow interior and an opening on the right side, that is, the first housing 111 has an annular opening on the right side. The first housing 111 is formed with a stepped surface at the opening, and the shape of the stepped surface matches the outer shape of the PCB board. A receiving position 1111 for accommodating the PCB board is formed between the stepped surface and the second housing 112. A first guide rail 113 for slidably connecting with the moving member 21 is arranged inside the first housing 111, and the length direction of the first guide rail 113 faces the receiving position 1111.

[0032] Similarly, the second housing 112 is a box structure with a hollow interior and an opening on the left side, that is, the second housing 112 has an annular opening on the left side. The size of the opening of the second housing 112 is smaller than the size of the opening of the first housing 111, so that when the PCB board is placed in the receiving position 1111, the second housing 112 can limit the PCB board and prevent the PCB board from flipping to one side of the second housing 112. In Figure 1 the illustrated embodiment, a groove for installing the clamping member 13 is provided on the outer surface of the second housing 112. A second guide rail 114 for slidably connecting with the correction member 3 is arranged inside the second housing 112, and the length direction of the second guide rail 114 faces the receiving position 1111.

[0033] In Figure 1 and Figure 2 the illustrated embodiment, the outer shape of the PCB board is square, and the opening, stepped surface of the first housing 111, and the opening of the second housing 112 are all square, that is, they match the outer shape of the PCB board, making the structures of the first housing 111 and the second housing 112 compact. In other embodiments, the outer shape of the PCB board, the opening of the first housing 111, the stepped surface, and the opening of the second housing 112 can also be in other shaped structures, such as circular, hexagonal, etc.

[0034] The clamping member 13 is provided on the second housing 112. The clamping member 13 is used to fix the PCB board within the accommodating position 1111, so as to prevent the position of the PCB board from moving when the detection mechanism 2 contacts the PCB board or when the end of the correction member 3 abuts against the surface of the PCB board.

[0035] The clamping member 13 includes a driving structure 131 and a top block 132. The driving structure 131 is connected to the second housing 112, and the top block 132 is connected to the movable end of the driving structure 131. Moreover, the driving structure 131 can drive the top block 132 to move closer to or away from the accommodating position 1111, so that the top block 132 abuts against the edge of the PCB board.

[0036] In Figure 1 and Figure 2 In the illustrated embodiment, clamping members 13 are provided on both the upper and lower sides of the second housing 112. The clamping members 13 on the upper and lower sides of the second housing 112 respectively correspond to the upper and lower edge positions of the PCB board. The top block 132 is strip-shaped, and the length direction of the top block 132 on the upper side is arranged along the upper side edge of the PCB board, so that the contact area between the top block 132 and the upper side edge of the PCB board is relatively large; the length direction of the top block 132 on the lower side is arranged along the lower side edge of the PCB board, so that the contact area between the top block 132 and the lower side edge of the PCB board is relatively large. With such an arrangement, the clamping effect of the clamping member 13 on the PCB board is improved, and the clamping position is at the edge of the PCB board, which does not affect the detection of the bending degree of the PCB board by the detection mechanism 2, nor does it affect the abutment of the correction member 3 against the middle part of the PCB board. In other embodiments, the clamping members 13 can be arranged corresponding to the four corners of the PCB board, or the clamping members 13 can be arranged corresponding to the four corners of the PCB board and the middle positions of the sides.

[0037] In one embodiment, a plurality of driving structures 131 are arranged at intervals along the length direction of the top block 132. The plurality of driving structures 131 are all connected to the top block 132, so that the plurality of driving structures 131 jointly drive the same top block 132 to move.

[0038] In the above, the driving structure 131 can be a telescopic air cylinder, a telescopic hydraulic rod 33, a cam mechanism or a lead screw mechanism, etc.

[0039] In one embodiment, the length of the top block 132 is relatively short, and a plurality of clamping members 13 are respectively arranged at intervals on the upper and lower sides of the second housing 112, so that the plurality of clamping members 13 clamp the PCB board simultaneously.

[0040] Referring to Figure 1 , Figure 3 and Figure 4 , the detection mechanism 2 includes a moving member 21 and a pressure sensor 22. The moving member 21 is arranged on one side of the accommodating position 1111. In Figure 1In the illustrated embodiment, the detection mechanism 2 is disposed in the cavity of the first housing 111. Since the accommodation position 1111 is provided on the first housing 111, when the clamping member 13 fixes the PCB board to the accommodation position 1111, a reference surface for detecting the bending degree of the PCB board is formed on the side surface of the accommodation position 1111 facing away from the clamping member 13.

[0041] The moving member 21 can move relative to the frame 11 in a direction approaching or departing from the accommodation position 1111. The moving member 21 has a starting position and stops when the pressure sensor 22 connected thereto contacts the PCB board. By obtaining the moving distance of the moving member 21 between the starting position and the stopping position, the bending degree of the PCB board is known. After the detection is completed, the moving member 21 returns to the starting position. The pressure sensor 22 is used to know the position where the moving member 21 stops, and thus the moving distance of the moving member 21 is known.

[0042] The method for knowing the bending degree of the PCB board is as follows: Place a flat PCB board at the accommodation position 1111, and control the moving member 21 to move from the starting position to the contact position with the flat PCB board, and record the moving distance L1 of the moving member 21 during this process. Then, control the moving member 21 to return to the starting position. Next, replace the flat PCB board with the PCB board to be corrected, and the controller 12 controls the moving member 21 to move from the starting position to the contact position with the PCB board, and record the moving distance L2 of the moving member 21 during this process. The bending degree L0 of the PCB board = L2 - L1. When L0 < 0, the PCB board bends towards the side close to the detection mechanism 2; when L0 > 0, the PCB board bends towards the side away from the detection mechanism 2; when L0 = 0, the PCB board is a flat PCB board and does not need to be corrected. That is to say, the position of the flat PCB board is the zero position of the PCB board correction device. The zero position is a fixed position, and it is only necessary to measure the distance between the zero position and the starting point of the moving member 21 once before each use, and it is not necessary to frequently place a flat PCB board for calibration during use.

[0043] The pressure sensor 22 is fixed to one end of the moving member 21 for contacting the PCB board. When the moving member 21 moves towards the PCB board and contacts the PCB board, the detected pressure of the pressure sensor 22 becomes larger, and the controller 12 controls the moving member 21 to stop moving according to the signal of the pressure sensor 22. At this time, the moving distance of the moving member 21 can be calculated by the rotation angle of the motor of the moving member 21, so that the detection mechanism 2 can accurately detect the bending degree of the PCB board. After the detection is completed, the controller 12 controls the moving member 21 to return to the starting position.

[0044] The moving member 21 includes a first motor 211 and a first moving assembly 212. The first motor 211 is fixed on the frame 11 and is electrically connected to the controller 12. The first moving assembly 212 is connected to the first motor 211. The pressure sensor 22 is disposed on the first moving assembly 212 and can move in a direction approaching or departing from the accommodating position 1111 under the drive of the first motor 211.

[0045] For example, the first moving assembly 212 includes a first lead screw 2121 and a first slider 2122. The first lead screw 2121 is rotatably connected to the frame 11 and is in transmission connection with the first motor 211. The first slider 2122 is slidably connected to the first guide rail 113 on the first housing 111 and is in threaded connection with the first lead screw 2121. When the first motor 211 rotates, the first lead screw 2121 rotates about its own axis, causing the first slider 2122 to move in a direction approaching or departing from the accommodating position 1111. The pressure sensor 22 is fixed on the first slider 2122, so that the pressure sensor 22 moves together with the first slider 2122 and contacts the PCB board.

[0046] For example, the first moving assembly 212 includes a first gear and a first rack. The first gear is in transmission connection with the first motor 211. The first rack is slidably connected to the first guide rail 113 on the first housing 111 and is engaged with the first gear. When the first motor 211 rotates, the first gear drives the first rack to move in a direction approaching or departing from the accommodating position 1111. The pressure sensor 22 is fixed on the first rack, so that the pressure sensor 22 can move together with the first rack and contact the PCB board.

[0047] In other embodiments, the moving member 21 may also be a moving trolley.

[0048] In one embodiment, the pressure sensor includes a connecting seat, an elastic member, and a probe. The connecting seat is fixed on the first slider 2122. The probe is for contacting the PCB board. The probe is slidably connected to the connecting seat. The elastic member is connected to the connecting seat and the probe. The telescopic direction of the probe relative to the connecting seat faces the PCB board. When the pressure sensor collides with the PCB board, the elastic member can contract to enable the probe to play a buffering role, thereby protecting both the probe and the PCB board.

[0049] The moving member 21 and the pressure sensor 22 are both electrically connected to the controller 12. A control program is stored in the controller 12. The controller 12 can obtain the bending degree of the PCB board according to the moving distance of the moving member 21 from the starting position to the position where the pressure sensor 22 contacts the PCB board, and calculate the set distance that the correcting member 3 needs to move when correcting the PCB board and the stagnation set time for continuously applying pressure to the correcting member 3 when correcting the PCB board based on the bending degree signal of the PCB board. Among them, the relationship among the bending degree of the PCB board, the set distance that needs to be moved when correcting the PCB board, and the stagnation set time for continuously applying pressure to the correcting member 3 can be obtained based on experience and burned into the control program of the controller 12.

[0050] Refer to Figure 1 , Figure 3 and Figure 5 , the correcting member 3 includes a second motor 31, a second moving assembly 32 and a pressing rod 33. The second motor 31 is fixed on the second housing, and the second motor 31 is electrically connected to the controller 12, so that the controller 12 can control the operation of the second motor 31. The second moving assembly 32 is connected to the second motor 31, and the pressing rod 33 is arranged on the second moving assembly 32 and can move in a direction close to or away from the accommodating position 1111 under the drive of the second motor 31.

[0051] For example, the second moving assembly 32 includes a second lead screw 321 and a second slider 322. The second lead screw 321 is rotatably connected to the frame 11 and is in transmission connection with the second motor 31. The second slider 322 is slidably connected to the second guide rail 114 on the second housing 112 and is threadedly connected to the second lead screw 321. When the second motor 31 rotates, the second lead screw 321 rotates around its own axis, so that the second slider 322 moves in a direction close to or away from the accommodating position 1111. The pressing rod 33 is fixed on the second slider 322, so that the pressing rod 33 moves together with the second slider 322 and abuts against the PCB board to make the PCB board flat again.

[0052] For example, the second moving assembly 32 includes a second gear and a second rack. The second gear is in transmission connection with the second motor 31. The second rack is slidably connected to the second guide rail 114 on the second housing 112 and is engaged with the second gear. When the second motor 31 rotates, the second gear drives the second rack to move in a direction close to or away from the accommodating position 1111. The pressing rod 33 is fixed on the second slider 322, so that the pressing rod 33 moves together with the second slider 322 and abuts against the PCB board to make the PCB board flat again.

[0053] The controller 12 controls the movement of the correcting member 3 in the following manner: when the controller 12 receives the movement distance signal of the detection mechanism 2 and calculates the bending degree signal of the PCB, it obtains the set distance that the correcting member 3 needs to move when correcting the PCB and the stagnation set time for continuously applying pressure to the correcting member 3 when correcting the PCB according to the bending degree signal of the PCB. Then, it controls the correcting member 3 to move the set distance so that the pressing rod 33 abuts against the PCB. After the correcting member 3 moves the set distance, it stops moving. After reaching the stagnation set time, the correcting member 3 moves away from the PCB to the starting position.

[0054] For example: when the thickness of the PCB is 1.6 mm, the length and width are 250X250 mm, and the bending degree is 1 mm, the moving distance of the correcting member 3 can be set to 5 - 15 mm, and the stagnation time can be set to 3 - 15 seconds. Among them, during the stagnation process of the correcting member 3, continuous pressure is applied to the PCB to make the PCB flat. For PCBs with different thicknesses, different length and width dimensions or different circuit design structures, different program groups can be set in the controller 12 in advance.

[0055] In an embodiment, the correcting member 3 is arranged on one side of the accommodating position 1111. In Figure 1 the embodiment shown, the PCB correcting device is only provided with the correcting member 3 on the second housing. When the PCB needs to be corrected, the convex side of the PCB faces the correcting member 3, so that the correcting member 3 can abut against the PCB and bend the PCB towards the concave side (the side opposite to the convex side) to make the PCB flat. When the detection mechanism 2 detects that the concave side of the PCB faces the correcting member 3, the direction of the PCB needs to be adjusted before correction.

[0056] Preferably, the correcting member 3 and the detection mechanism 2 are respectively arranged on both sides of the accommodating position 1111, so that the installation positions between the correcting member 3 and the detection mechanism 2 do not interfere with each other. In other embodiments, the correcting member 3 and the detection mechanism 2 can also be arranged on the same side of the accommodating position 1111, and the movement paths of the correcting member 3 and the detection mechanism 2 can avoid each other to prevent interference between the two mechanisms. For example: the positions of the correcting member 3 and the detection mechanism 2 are offset to avoid interference between the two; or a through hole for passing through the pressure sensor 22 is provided on the pressing rod 33, and when the detection mechanism 2 performs detection, the pressure sensor 22 passes through the through hole to contact the PCB, so that the movement trajectories of the two are the same but do not interfere with each other.

[0057] In an embodiment, the PCB correcting device is provided with the correcting member 3 on both sides of the accommodating position 1111. The controller 12 can judge the bending direction of the PCB according to the bending degree signal detected by the correcting member 3, and then select the corresponding correcting member 3 to perform abutting correction on the PCB. In this embodiment, it is not necessary to adjust the direction of the PCB.

[0058] In one embodiment, during the process of the controller 12 controlling the reset of the moving member 21, the controller 12 can simultaneously control the correction member 3 to work, making the working rhythm of the PCB board correction device more compact and the working efficiency higher.

[0059] In the above, after the PCB board correction device performs the first correction on the PCB board, the controller 12 can control the detection mechanism 2 to detect the corrected PCB board again. If it is detected that the bending degree of the PCB board is within the qualified range, the corrected PCB board can be removed. If it is detected that the bending degree of the PCB board still exceeds the qualified range, secondary correction can be performed.

[0060] Refer to Figure 6 , the working process of the PCB board correction device for correcting the PCB board: Place the PCB board on the placement position 1111 on the frame 11, and control the clamping member 13 to fix the PCB board in the placement position 1111; then control the moving member 21 of the detection mechanism 2 to move so that the pressure sensor 22 contacts the bending area of the PCB board, and obtain the bending degree of the PCB board according to the moving distance of the moving member 21. Next, the controller 12 controls the correction member 3 to move according to the bending degree signal of the PCB board, so that the correction member 3 abuts against the bent side of the PCB board to make the PCB board resume flattening. The controller 12 controls the correction member 3 to reset to complete the correction of the PCB board. Finally, control the clamp to release the PCB board so that the corrected PCB board can be taken out from the placement position 1111.

[0061] The PCB board correction device can be used in combination with a production line. For example, an LED display production line includes a PCB board correction device and an SMT mounter, and the PCB board correction device is arranged upstream of the SMT mounter. After the bent PCB board is corrected by the PCB board correction device, electrical components such as LED lamp beads are mounted through the SMT mounter.

[0062] In one embodiment, the LED display production line further includes a manipulator, and the manipulator is arranged between the PCB board correction device and the SMT mounter. The manipulator can extract the PCB board on the PCB board correction device and place it on the SMT mounter. In other embodiments, the manipulator can also be replaced by a conveying mechanism. That is, the conveying mechanism connects the PCB board correction device and the SMT mounter, and conveys the PCB board on the PCB board correction device to the SMT mounter.

[0063] The PCB board correction device of the present application includes a main body 1, a detection mechanism 2, and a correction member 3. On the frame 11 of the main body 1, there is a placement position 1111 for fixing the PCB board. The correction member 3 is movably arranged on the frame 11 and is electrically connected to the controller 12 of the main body 1. The detection mechanism 2 includes a moving member 21 and a pressure sensor 22 arranged on the moving member 21. The moving member 21 is movably arranged on the frame 11 and is arranged on one side of the placement position 1111, and can move in a direction close to or away from the placement position 1111 on the main body 1. The pressure sensor 22 is used to abut against the bent area of the PCB board in the placement position 1111. The controller 12 of the main body 1 obtains the moving distance of the moving member 21 according to the signal of the pressure sensor 22, and controls the correction member 3 to move in a direction close to the placement position 1111 on the main body 1 and abut against the surface of the PCB board according to the moving distance signal, so as to push the PCB board to bend in the opposite direction of the bend to make the PCB board flat. With such a setting, the PCB board correction device of the present application can automatically correct the PCB board, improve the correction efficiency and accuracy of the PCB board, and reduce the labor intensity.

[0064] Moreover, compared with the solution of using a fixture to clamp the PCB board to prevent the PCB board from deforming during the welding process, in the solution of using a fixture to clamp the PCB board to prevent the PCB board from deforming during the welding process, the fixture needs to be fixed together with the PCB board and through the welding equipment. However, the fixture will absorb the heat of welding, resulting in uneven heating of the solder on the PCB board, which is prone to welding problems. Moreover, the welding equipment needs to be set at a higher temperature to supplement the heat loss caused by the fixture absorbing heat, resulting in an increase in electricity cost. And designing fixtures for different products will also lead to an increase in cost. The PCB board of the present application does not need to be used with a fixture during welding. When the PCB board bends during welding, the PCB board is corrected by the PCB board correction device, so that the subsequent mounting of electrical components is carried out, and thus there are no technical problems brought about by welding the PCB board with a fixture.

[0065] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A PCB board correction device, characterized in that: include: The main body includes a frame and a controller, wherein the frame is provided with a receiving position for fixing a PCB board; The detection mechanism comprises a moving member and a pressure sensor arranged on the moving member, wherein the moving member and the pressure sensor are both electrically connected to the controller; the moving member is movably arranged on the frame and arranged on one side of the accommodating position so as to be relatively close to or away from the accommodating position; the pressure sensor is arranged on the moving member and is used to abut against the bending area of ​​the PCB board in the accommodating position, and the controller obtains the moving distance of the moving member according to the signal of the pressure sensor; The correction member is movably arranged on the frame; the correction member is electrically connected to the controller, and the controller can control the correction member to move a set displacement according to the moving distance signal of the moving member, so that the end of the correction member abuts against the surface of the PCB board to restore the PCB board to be flat.

2. The PCB board correction device according to claim 1, characterized in that: The moving part includes a first moving component and a first motor electrically connected to the controller, the first motor is fixed on the frame, the first moving component is connected to the first motor, the pressure sensor is arranged on the first moving component, and can move in a direction close to or away from the accommodating position under the drive of the first motor.

3. The PCB board correction device according to claim 2, characterized in that: The first moving component includes a first screw and a first slider. The first screw is rotatably connected to the frame and is transmission-connected to the first motor. The first slider is slidably connected to the frame and is threadedly connected to the first screw. The pressure sensor is fixed on the first slider.

4. The PCB board correction device according to claim 3, characterized in that: The frame comprises a first guide rail, the length direction of the first guide rail faces the accommodating position, and the first sliding block is slidably connected to the first guide rail.

5. The PCB board correction device according to claim 1, characterized in that: The correction member includes a second motor, a second moving assembly, a pressure rod and a second motor electrically connected to the controller, the second motor is fixed to the frame, the second moving assembly is connected to the second motor, the pressure rod is arranged on the second moving assembly, and can be moved in a direction close to or away from the accommodating position under the drive of the second motor; The controller can control the moving distance of the pressure rod driven by the second motor according to the moving distance signal of the moving member; and the controller can control the stagnation setting time of the pressure rod driven by the second motor at the maximum value of the moving distance according to the moving distance of the moving member.

6. The PCB board correction device according to claim 5, characterized in that: The second moving assembly includes a second screw rod and a second slider, the second screw rod is rotatably connected to the frame and is transmission-connected to the second motor, the second slider is slidably connected to the frame and is threadedly connected to the second screw rod, and the pressure rod is fixed to the second slider.

7. The PCB board correction device according to claim 6, characterized in that: The frame includes a second guide rail, the length direction of the second guide rail faces the accommodating position, and the second sliding block is slidably connected to the second guide rail.

8. The PCB board correction device according to claim 1, characterized in that: The correction member is arranged on one side of the accommodation position, and the correction member and the detection mechanism are arranged on two sides of the accommodation position respectively; or The correction pieces are arranged on both sides of the accommodating position.

9. The PCB board correction device according to claim 1, characterized in that: The main body also includes a clamping member, which includes a driving structure and a top block. The driving structure is connected to the frame, and the top block is connected to the movable end of the driving structure. The driving structure can drive the top block to move closer to or away from the accommodating position so that the top block abuts against the edge of the PCB board.

10. The PCB board correction device according to claim 1, characterized in that: The frame includes a first shell and a second shell, the first shell is fixedly connected to the second shell, and the first shell is provided with a step surface on a side facing the second shell, and the accommodating position for accommodating the PCB board is formed between the step surface and the second shell.

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