PCB detection equipment and detection method thereof

Abstract

The invention discloses the technical field of optical detection, and particularly relates to PCB (Printed Circuit Board) detection equipment and a detection method thereof. The PCB detection equipment comprises a machine table, and a first feeding mechanism, a second feeding mechanism, a first detection mechanism, a turnover conveying mechanism and a second detection mechanism which are arranged on the machine table, the first detection mechanism can detect the surface of one side of a material plate adsorbed on the first feeding mechanism, and in the detection process, the material plate is continuously kept flat, so that the detection efficiency is improved. Therefore, the definition of the first detection mechanism during image taking is improved. The first feeding mechanism can feed the material plate detected by the first detection mechanism to the turnover conveying mechanism; the overturning conveying mechanism is used for overturning the material plate and conveying the material plate to the second feeding mechanism, the second detection mechanism can detect the surface of the other side of the material plate adsorbed on the second feeding mechanism, and the material plate is continuously kept flat in the detection process, so that the definition of the second detection mechanism during image taking can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of PCB detection, and in particular relates to a PCB detection device and a detection method thereof. Background Art

[0002] Due to market demand, the line width and line spacing of PCB are getting smaller and smaller, the base material of the inner layer board is getting thinner and thinner, the copper thickness is getting smaller and smaller, the format of the whole board is getting larger and larger, the application of carrier-like boards is becoming more and more extensive, and the requirements for PCB testing are also correspondingly improved.

[0003] PCB is mainly inspected by PCB inspection equipment. For higher-precision PCB, due to insufficient flatness, existing PCB inspection equipment is difficult to obtain clear images during inspection and cannot meet the inspection requirements of high-precision PCB. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to provide a PCB detection device and a detection method thereof in view of the problem that it is difficult to clearly obtain images when performing visual inspection with existing PCB detection equipment.

[0005] To solve the above technical problems, on the one hand, an embodiment of the present invention provides a PCB detection device, including a machine platform, and a first feeding mechanism, a second feeding mechanism, a first detection mechanism, a flip conveying mechanism and a second detection mechanism arranged on the machine platform, wherein the flip conveying mechanism is arranged between the first feeding mechanism and the second feeding mechanism along a first direction; The first detection mechanism can detect one side surface of the material sheet adsorbed on the first feeding mechanism in the thickness direction, and the first feeding mechanism can deliver the material sheet detected by the first detection mechanism to the flipping conveying mechanism; The flipping and conveying mechanism is used to flip the material sheet and send it to the second feeding mechanism. The second detection mechanism can detect the other side surface of the material sheet adsorbed on the second feeding mechanism in the thickness direction. The second feeding mechanism can send out the material sheet after detection.

[0006] Optionally, the first feeding mechanism includes a first adsorption platform and a first conveyor belt, the first adsorption platform is provided with a front adsorption chamber, the first conveyor belt is provided with a first adsorption hole, and the first adsorption hole is connected to the front adsorption chamber to adsorb the material sheet placed on the first conveyor belt.

[0007] Optionally, the front adsorption chamber includes a first adsorption chamber and a plurality of second adsorption chambers, and the plurality of second adsorption chambers are independent of each other and are arranged around the first adsorption chamber; A plurality of the first adsorption holes are provided, and the first adsorption chamber and the second adsorption chamber are respectively connected to the first adsorption holes in corresponding areas on the first conveyor belt.

[0008] Optionally, the first adsorption platform includes a first adsorption member and a second adsorption member, the first adsorption chamber and a plurality of the second adsorption chambers are arranged on the first adsorption member, and the second adsorption member is connected to the first adsorption member to seal the first adsorption chamber and the second adsorption chamber; The second adsorption member is provided with a plurality of first connection holes, and at least one of the first adsorption chamber and the second adsorption chamber is connected with the first adsorption hole through the first connection hole.

[0009] Optionally, the first feeding mechanism further includes a first driving assembly, which is mounted on the first adsorption platform and is capable of driving the first conveyor belt to move so as to drive the material sheet to move along the first direction toward the flipping conveying mechanism.

[0010] Optionally, the second feeding mechanism includes a second adsorption platform and a second conveyor belt, the second adsorption platform is provided with a rear adsorption cavity, the second conveyor belt is provided with a second adsorption hole, and the second adsorption hole is connected to the rear adsorption cavity to adsorb the material sheet placed on the second conveyor belt.

[0011] Optionally, the rear adsorption chamber includes a third adsorption chamber and multiple fourth adsorption chambers, the multiple fourth adsorption chambers are independent of each other and are arranged around the third adsorption chamber; the second adsorption holes are arranged in multiple, and the third adsorption chamber and the fourth adsorption chamber are respectively connected to the second adsorption holes in corresponding areas on the second conveyor belt.

[0012] Optionally, the second adsorption platform includes a third adsorption member and a fourth adsorption member, the third adsorption chamber and a plurality of fourth adsorption chambers are arranged on the third adsorption member, and the fourth adsorption member is connected to the third adsorption member to close the third adsorption chamber and the fourth adsorption chamber; The fourth adsorption member is provided with a plurality of second connection holes, and at least one of the third adsorption chamber and the fourth adsorption chamber is connected with the second adsorption hole through the second connection hole.

[0013] Optionally, the second feeding mechanism further includes a second driving assembly, which is mounted on the second adsorption platform, and the second driving assembly can drive the second conveyor belt to move, so as to drive the material sheet to move along the first direction and leave the machine.

[0014] Optionally, the first detection component can move along the first direction and detect one side surface of the material sheet in the thickness direction, and the second detection component can move along the first direction and detect the other side surface of the material sheet in the thickness direction.

[0015] Optionally, the PCB detection device further includes a first support seat, a second support seat, a third drive assembly and a fourth drive assembly, the first support seat and the second support seat are mounted on the machine platform, the first detection assembly is mounted on the first support seat and is located above the first feeding mechanism, and the second detection assembly is mounted on the second support seat and is located above the second feeding mechanism; The third driving assembly is used to drive the first detection mechanism to move along the first direction, and the fourth driving assembly is used to drive the second detection mechanism to move along the first direction.

[0016] Optionally, the first detection assembly includes a first camera assembly, a first camera driving member and a first roller assembly, the first camera assembly is slidably connected to the first support seat, the first roller assembly is mounted on the first camera assembly, and the first camera driving member is used to drive the first camera assembly to approach or move away from the first feeding mechanism; When the first detection mechanism moves along the first direction, the first roller assembly can move along the first direction and flatten the material plate on the first feeding mechanism.

[0017] Optionally, the second detection assembly includes a second camera assembly, a second camera driving member, and a second roller assembly, the second camera assembly is slidably connected to the second support seat, the second roller assembly is mounted on the second camera assembly, and the second camera driving member is used to drive the second camera assembly to approach or move away from the second feeding mechanism; When the second detection mechanism moves along the first direction, the second roller assembly can move along the first direction and flatten the material plate on the second feeding mechanism.

[0018] Optionally, the flipping conveying mechanism comprises a flipping mechanism, a fifth driving assembly, a first conveying portion and a second conveying portion, wherein the first conveying portion and the second conveying portion are installed on the flipping mechanism, and the fifth driving assembly is used to drive the first conveying portion and the second conveying portion to move closer to or away from each other, so as to clamp the material sheet between the first conveying portion and the second conveying portion or release the material sheet; The flipping mechanism is used to flip the material plate clamped between the first conveying part and the second conveying part.

[0019] Optionally, the fifth driving assembly includes a first conveying driving member and a second conveying driving member, the first conveying driving member can drive the first conveying part to reciprocate along the second direction, and the second conveying driving member can drive the second conveying part to reciprocate along the second direction, and the first direction and the second direction are not parallel and do not overlap.

[0020] Optionally, the flip mechanism includes a flip assembly and a flip driving member for driving the flip assembly to rotate, and the first conveying driving member and the second conveying driving member are installed on the flip assembly; The first conveying part comprises a first supporting member, a first mounting seat and a second mounting seat, wherein the first mounting seat and the second mounting seat are arranged on the first supporting member, the output end of the first conveying driving member is connected to the first mounting seat, and the second mounting seat is slidably connected to the flip assembly; The second conveying part includes a second support member, a third mounting seat and a fourth mounting seat, the third mounting seat and the fourth mounting seat are arranged on the second support member, the output end of the second conveying drive member is connected to the third mounting seat, and the fourth mounting seat is slidably connected to the flip assembly.

[0021] Optionally, the first conveying part includes a first belt and a first belt driving member, and the first belt driving member is used to drive the first belt to move, so that the first belt can convey the material plate placed on the first belt along the first direction; The second conveying portion includes a second belt and a second belt driving member, wherein the second belt driving member is used to drive the second belt to move so that the second belt can convey the material plate placed on the second belt along the first direction.

[0022] Optionally, the PCB detection device further comprises a clapper mechanism installed on the machine platform, and the clapper mechanism is arranged on a side of the first feeding mechanism away from the flipping conveying mechanism in the first direction; The clapper mechanism includes a support platform, a roller assembly, a movable assembly and a fixed assembly, wherein the roller assembly is mounted on the support platform, and the roller assembly can drive the material plate to move along the first direction toward the first feeding mechanism; The movable component and the fixed component are arranged on opposite sides of the support platform in the third direction. When the roller assembly drives the material sheet to move, the movable component can drive the material sheet to move toward the fixed component and abut against the fixed component. The first direction and the third direction are not parallel and do not overlap.

[0023] On the other hand, an embodiment of the present invention provides a detection method based on the PCB detection device as described above, comprising: Feeding the material sheet into the first feeding mechanism, and the first feeding mechanism adsorbing the material sheet; The first detection mechanism detects one side surface of the material plate in the thickness direction; The first feeding mechanism feeds the material plate detected by the first detecting mechanism to the flipping conveying mechanism; The flipping and conveying mechanism flips the material sheet and sends it to the second feeding mechanism, and the second feeding mechanism absorbs the material sheet; The second detection mechanism detects the other side surface of the material plate in the thickness direction; The second feeding mechanism feeds out the material sheet after detection.

[0024] Optionally, the feeding the material sheet into the first feeding mechanism, and the first feeding mechanism adsorbing the material sheet comprises: Measuring a first dimension of the sheet in a third direction; wherein the first direction and the third direction are not parallel and do not overlap; After the material sheet is placed in place, the conveyor belt provided on the first feeding mechanism is stopped; The area of ​​the adsorption chamber provided on the first feeding mechanism is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

[0025] Optionally, measuring a first dimension of the sheet in a third direction comprises: Placing the material plate on a clapping mechanism; wherein the clapping mechanism is located on a side of the first feeding mechanism away from the flipping conveying mechanism in the first direction; Acquire a first distance in the third direction between a movable component provided on the clapper mechanism and a fixed component provided on the clapper mechanism; The movable component pushes the material plate against the fixed component, and obtains a second distance moved by the movable component in the third direction; The difference between the first distance and the second distance is calculated to obtain the first size.

[0026] Optionally, the flipping and conveying mechanism flips the material sheet and sends it to the second feeding mechanism, and the second feeding mechanism absorbs the material sheet, including: After the material plate is in place, the conveyor belt provided on the second feeding mechanism is stopped; The area of ​​the adsorption chamber provided on the second feeding mechanism is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

[0027] Optionally, the first detection mechanism detects one side surface of the material sheet in the thickness direction, including: measuring a second dimension of the sheet in the first direction; Controlling the first detection mechanism to move along the first direction, and controlling the scanning range of the first detection component in the first direction based on the second size; Measuring the thickness of the material plate, and adjusting the focal length of the first camera assembly provided on the first detection assembly based on the thickness; The first camera assembly takes pictures.

[0028] Optionally, measuring the second dimension of the sheet in the first direction includes: Obtaining an estimated size of the sheet in the first direction; The precise size of the sheet material in the first direction is obtained, and the second size is obtained based on the estimated size and the precise size.

[0029] Optionally, the second detection mechanism detects the other side surface of the material sheet in the thickness direction, including: controlling the second detection mechanism to move along the first direction; controlling a scanning range of the second detection component in the first direction based on the second size; adjusting a focal length of a second camera assembly disposed on the second detection assembly based on the thickness; The second camera assembly takes pictures.

[0030] The PCB inspection device provided by the embodiment of the present invention uses the first feeding mechanism to adsorb and position the material plate, so that when the first inspection mechanism inspects the surface of one side of the material plate, the material plate remains flat, thereby improving the clarity of the first inspection mechanism when taking pictures. The material plate is turned over by the flipping conveying mechanism, so that when the material plate is adsorbed and positioned by the second feeding mechanism, the other side surface of the material plate faces the second inspection mechanism, and when the second inspection mechanism inspects the other side surface of the material plate, the material plate remains flat, thereby improving the clarity of the second inspection mechanism when taking pictures.

[0031] The flipping conveying mechanism can be connected between the first feeding mechanism and the second feeding mechanism, so that when the first feeding mechanism feeds the flipping conveying mechanism and when the flipping conveying mechanism feeds the second feeding mechanism, the board can be prevented from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0033] Figure 1 is a schematic diagram of a PCB detection device provided by an embodiment of the present invention; Figure 2 is a schematic diagram of a first feeding mechanism and a second feeding mechanism provided in one embodiment of the present invention; Figure 3 is a cross-sectional schematic diagram of a first feeding mechanism provided by an embodiment of the present invention; Figure 4 is an exploded view of a first feeding mechanism and a second feeding mechanism provided by an embodiment of the present invention; Figure 5 is a schematic diagram of a first adsorption member and a third adsorption member provided by an embodiment of the present invention; Figure 6 is a schematic diagram of a second adsorption member and a fourth adsorption member provided by an embodiment of the present invention; Figure 7 is a schematic diagram of a first support base and a second support base provided by an embodiment of the present invention; Figure 8 yes Figure 7 The enlarged schematic diagram of point A in the middle; Fig. 9 is a schematic diagram of a first support base provided by an embodiment of the present invention; Fig.10 is a schematic diagram of a flip conveying mechanism provided by an embodiment of the present invention; Fig.11 yes Fig.10 The enlarged schematic diagram of point B in the middle; Fig.12 is an exploded view of a flip conveying mechanism provided by an embodiment of the present invention; Fig.13 is an exploded view of a first conveying portion provided by an embodiment of the present invention; Fig.14 It is a schematic diagram of a clapper mechanism provided in one embodiment of the present invention.

[0034] The reference numerals in the specification are as follows: 1. Machine; 2. First feeding mechanism; 21. First adsorption platform; 211. First adsorption member; 2111. First adsorption chamber; 2112. Second adsorption chamber; 21121. First chamber; 21122. Second chamber; 2113. First side; 2114. Second side; 212. Second adsorption member; 2121. First connecting hole; 2122. Groove; 22. First conveyor belt; 221. First adsorption hole; 23. First driving assembly; 231. Driving motor; 232. Active roller; 233. Driven roller; 234. Tensioning roller; 24. First roller group; 25. Second roller group; 3. Second feeding mechanism; 31. Second adsorption platform; 311. Third adsorption member; 3111. Third adsorption chamber; 3112. Fourth adsorption chamber; 312. Fourth adsorption member; 3121. Second connecting hole; 32. Second conveyor belt; 321. Second adsorption hole; 33. Second driving assembly; 4. first detection mechanism; 41. first camera assembly; 42. first camera driving member; 43. first roller assembly; 431. roller connecting member; 432. guide rod; 433. bearing; 434. connecting rod; 435. roller; 5. Second detection mechanism; 51. Second camera assembly; 52. Second camera driving member; 53. Second roller assembly; 6. Flipping conveying mechanism; 61. Flipping mechanism; 611. Flipping assembly; 6111. First connecting portion; 61111. First sliding rod; 6112. Second connecting portion; 61121. Second sliding rod; 612. Flipping driving member; 613. First rotating plate; 614. Second rotating plate; 615. Support rod; 62. Fifth driving assembly; 621. First conveying driving member; 622. Second conveying driving member; 63. First conveying portion; 631. first support member; 6311, first support plate; 6312, first side plate; 6313, second side plate; 632, first mounting seat; 633, second mounting seat; 6331, first sleeve; 634, first belt; 635, first belt driving member; 64, second conveying portion; 641, second support member; 642, third mounting seat; 643, fourth mounting seat; 6431, second sleeve; 644, second belt; 645, second belt driving member; 7. Clapper mechanism; 71. Support platform; 72. Roller assembly; 73. Movable assembly; 74. Fixed assembly; 75. Edge sensor; 76. First in-position sensor; 77. Second in-position sensor; 8. First support seat; 81. Third drive assembly; 811. First linear motor; 812. Second linear motor; 82. First base; 83. First beam; 9. Second support seat; 91. Fourth drive assembly; a, first direction; b, second direction; c, third direction. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] like Figures 1 to 14 As shown, a PCB detection device provided by an embodiment of the present invention includes a machine platform 1, a first feeding mechanism 2, a second feeding mechanism 3, a first detection mechanism 4, a flipping conveying mechanism 6 and a second detection mechanism 5. The first feeding mechanism 2, the second feeding mechanism 3, the first detection mechanism 4, the flipping conveying mechanism 6 and the second detection mechanism 5 are all arranged on the machine platform 1, and the flipping conveying mechanism 6 is arranged between the first feeding mechanism 2 and the second feeding mechanism 3 along a first direction.

[0037] The first detection mechanism 4 can detect one side surface of the material sheet adsorbed on the first feeding mechanism 2 in the thickness direction, and the first feeding mechanism 2 can send the material sheet detected by the first detection mechanism 4 to the turning and conveying mechanism 6; The flipping conveying mechanism 6 is used to flip the material sheet and send it to the second feeding mechanism 3. The second detection mechanism 5 can detect the other side surface of the material sheet adsorbed on the second feeding mechanism 3 in the thickness direction. The second feeding mechanism 3 can send out the material sheet after the detection. The first detection mechanism 4 and the second detection mechanism 5. After the first feeding mechanism 2 sends the material sheet to the first detection mechanism 4 for one-side detection, the material sheet is directly flipped by the flipping conveying mechanism 6 and sent to the second feeding mechanism 3 for the other side detection. Finally, the second feeding mechanism 3 sends out the material sheet after the detection. The material sheet can be inspected on both sides in sequence, without manual handling and repositioning of the material sheet, reducing labor costs and errors that may be caused by manual operation.

[0038] In this embodiment, the material sheet is adsorbed and positioned by the first feeding mechanism 2, so that when the first detection mechanism 4 detects one side surface of the material sheet, the material sheet remains flat on the first feeding mechanism 2, thereby improving the clarity of the first detection mechanism 4 when taking pictures. The material sheet is turned over by the flipping conveying mechanism 6, so that when the material sheet is adsorbed and positioned by the second feeding mechanism 3, the other side surface of the material sheet faces the second detection mechanism 5. When the second detection mechanism 5 detects the other side surface of the material sheet, the material sheet remains flat on the second feeding mechanism 3, thereby improving the clarity of the second detection mechanism 5 when taking pictures, meeting the detection requirements of high-precision plates.

[0039] The material sheet can be turned over by the flipping conveying mechanism 6, and the flipping conveying mechanism 6 can be connected between the first feeding mechanism 2 and the second feeding mechanism 3. It also has the function of driving the material sheet fed by the first feeding mechanism 2 to move and feed the material to the second feeding mechanism 3, thereby avoiding the existing situation where the material sheet falls off when the robot takes the material after flipping.

[0040] In one embodiment, the first feeding mechanism 2 includes a first adsorption platform 21 and a first conveyor belt 22. The first adsorption platform 21 is provided with a front adsorption chamber. The first conveyor belt 22 is provided with a first adsorption hole 221. The first adsorption hole 221 is connected to the front adsorption chamber to adsorb the material sheet placed on the first conveyor belt 22, so that the material sheet and the first conveyor belt 22 are tightly fitted, so that the material sheet on the first conveyor belt 22 remains flat under the negative pressure of the front adsorption chamber, preventing the material sheet from warping on the first conveyor belt 22, and facilitating the detection of the material sheet.

[0041] In one embodiment, the front adsorption chamber includes a first adsorption chamber 2111 and a plurality of second adsorption chambers 2112, and the plurality of second adsorption chambers 2112 are independent of each other and are arranged around the first adsorption chamber 2111. By arranging the plurality of second adsorption chambers 2112 around the first adsorption chamber 2111, a plurality of independent chambers can be obtained, and by selectively opening the first adsorption chamber 2111 and the plurality of second adsorption chambers 2112, a plurality of adsorption areas of different sizes can be combined. When conveying the sheet material, the first adsorption chamber 2111 and different numbers of second adsorption chambers 2112 are selectively opened according to the size of the sheet material, so that the adsorption area on the first adsorption platform 21 can adapt to the size of the sheet material, and the positioning accuracy of the sheet materials of various different sheet pairs can be further ensured.

[0042] Among them, in order to facilitate the explanation of the relationship between the multiple second adsorption chambers 2112 and the first adsorption chamber 2111, the multiple second adsorption chambers 2112 are numbered 1, 2...n, wherein the second adsorption chamber No. 1 2112 is the position closest to the first adsorption chamber 2111, and n is the position farthest from the first adsorption chamber 2111. The multiple second adsorption chambers 2112 are independent of each other, the second adsorption chamber No. 1 2112 surrounds the first adsorption chamber 2111, the second adsorption chamber No. 2 2112 surrounds the second adsorption chamber No. 1 2112, and the remaining second adsorption chambers 2112 are arranged in sequence, thereby forming a structure in which the multiple second adsorption chambers 2112 are arranged around the first adsorption chamber 2111.

[0043] The first conveyor belt 22 surrounds the first adsorption platform 21 and is in a closed structure. A plurality of first adsorption holes 221 are provided. The first adsorption cavity 2111 and the second adsorption cavity 2112 are respectively connected to the first adsorption holes 221 in the corresponding areas on the first conveyor belt 22. When performing adsorption positioning, since the first adsorption cavity 2111 and the second adsorption cavity 2112 are spaced apart from each other, Figure 3 In the up and down directions, the upper part of the first conveyor belt 22 has a first area corresponding to the first adsorption chamber 2111, and the upper part of the first conveyor belt 22 has a second area corresponding to the second adsorption chamber 2112. The first adsorption chamber 2111 adsorbs the material sheet through the first adsorption hole 221 in the first area, and the second adsorption chamber 2112 adsorbs the material sheet through the first adsorption hole 221 in the second area.

[0044] In one embodiment, the first adsorption platform 21 includes a first adsorption member 211 and a second adsorption member 212, a first adsorption chamber 2111 and a plurality of second adsorption chambers 2112 are arranged on the first adsorption member 211, and the second adsorption member 212 is connected to the first adsorption member 211 to close the first adsorption chamber 2111 and the second adsorption chamber 2112.

[0045] Among them, the first adsorption chamber 2111 and the second adsorption chamber 2112 are in the form of a groove 2122 structure on the first adsorption component 211 and are recessed in the direction away from the second adsorption component 212. The opening directions of the first adsorption chamber 2111 and the second adsorption chamber 2112 are both toward the second adsorption component 212. In this way, after the second adsorption component 212 is covered on the first adsorption component 211, the opening of the first adsorption chamber 2111 and the opening of the second adsorption chamber 2112 can be closed, so that the first adsorption chamber 2111 and the second adsorption chamber 2112 form a closed cavity.

[0046] In the first direction a, the first adsorption chamber 2111 is arranged at one end of the first adsorption member 211, and multiple second adsorption chambers 2112 are arranged at intervals along the first direction a, so as to adjust the distribution of adsorption force according to the shape and size of the material plate and improve the stability and reliability of adsorption.

[0047] In one embodiment, if Figure 4 As shown, the first adsorption cavity 2111 is square, the second adsorption cavity 2112 includes a first cavity 21121 and a second cavity 21122 that are interconnected, the first adsorption member 211 has adjacent first side edges 2113 and second side edges 2114, the first side edges 2113 extend along a first direction, the second side edges 2114 extend along a third direction, and the first direction a and the third direction are not parallel and do not overlap. The second adsorption cavity 2112 is L-shaped, the first cavity 21121 extends from the second side edge 2114 toward the second cavity 21122 along a first direction, and the second cavity 21122 extends toward the first side edge 2113 along a third direction, so that the adsorption force can be applied to the material sheet in the first direction and the third direction, and the adsorption force can be spread more evenly on the surface of the material sheet through the extension of the cavity in two directions, reducing the possibility of deformation of the material sheet caused by local stress concentration, and achieving a more uniform adsorption force distribution on the surface of the material sheet.

[0048] In one embodiment, a plurality of first connection holes 2121 are provided on the second adsorption member 212, and at least one of the first adsorption chamber 2111 and the second adsorption chamber 2112 is connected to the first adsorption hole 221 through the first connection hole 2121. The first adsorption chamber 2111 and / or the second adsorption chamber 2112 is connected to the first adsorption hole 221 through the first connection hole 2121, so that when vacuum adsorption is generated, the adsorption force can be effectively transferred from the adsorption chamber to the first adsorption hole 221, and then act on the material sheet placed on the first conveyor belt 22, thereby ensuring that the adsorption function of the entire adsorption system is normally exerted and the material sheet can be firmly adsorbed.

[0049] The number of the first connection holes 2121 is set according to different adsorption requirements, and the adsorption force can be adjusted by adjusting the size, number or shape of the first connection holes 2121.

[0050] In one embodiment, if Figure 5 As shown, a plurality of grooves 2122 are provided on the surface of the side of the second adsorption member 212 facing away from the first adsorption member 211, and the grooves 2122 extend along the first direction a. The plurality of grooves 2122 are arranged in an array on the second adsorption member 212, and at least one first connecting hole 2121 is provided in each groove 2122. The first connecting hole 2121 and the groove 2122 enable the first adsorption chamber 2111 and / or the second adsorption chamber 2112 to be connected to the first adsorption hole 221. The connecting hole is provided in the groove 2122. When vacuum adsorption is performed, the adsorption force is generated from the groove 2122 and acts on the material plate, thereby increasing the effective adsorption area between the adsorption chamber and the material plate and increasing the adsorption force.

[0051] Among them, the groove 2122 is arranged on the side surface of the second adsorption component 212 away from the first adsorption component 211, and is recessed in the direction of the first adsorption component 211. Through the multiple grooves 2122 arranged in an array, the entire surface of the second adsorption component 212 can be distributed with grooves 2122, so that the material sheet at any position on the first conveyor belt 22 can be well adsorbed.

[0052] In one embodiment, the first feeding mechanism 2 further includes a first driving assembly 23, which is installed on the first adsorption platform 21. The first driving assembly 23 can drive the first conveyor belt 22 to move, so as to drive the material sheet to move along the first direction toward the flip conveying mechanism 6.

[0053] The first driving assembly 23 includes a driving motor 231, an active roller 232, a driven roller 233 and a plurality of tensioning rollers 234. The active roller 232 and the driven roller 233 are installed at both ends of the first adsorption platform 21 in the first direction a. The first conveyor belt 22 is wound around the active roller 232 and the driven roller 233. The output end of the driving motor 231 is connected to the active roller 232. The driving motor 231 can drive the active roller 232 to rotate, thereby driving the first conveyor belt 22 to move, and then driving the material sheet placed on the first conveyor belt 22 to move along the first direction.

[0054] Roller seats are connected to both ends of the tensioning roller 234, and the tensioning roller 234 can be supported by two roller seats in the third direction. Multiple tensioning rollers 234 are arranged at intervals along the first direction, and multiple tensioning rollers 234 are arranged between the active roller 232 and the driven roller 233. Multiple tensioning rollers 234 are used to tension the first conveyor belt 22. A certain tension can be applied to the first conveyor belt 22 through the tensioning roller 234, which can increase the friction between the first conveyor belt 22 and the active roller 232, thereby preventing the first conveyor belt 22 from slipping during transportation.

[0055] In one embodiment, the first feeding mechanism 2 further includes a first roller group 24 and a second roller group 25, which are installed at both ends of the first adsorption platform 21 in the first direction a, and the first roller group 24 is used to drive the material sheet to enter from the feeding side of the first conveyor belt 22, and can guide the material sheet to smoothly enter the first conveyor belt 22. The second roller group 25 is used to drive the material sheet to separate from the first conveyor belt 22 from the discharging side of the first conveyor belt 22, and can effectively drive the material sheet to transition to the flip conveying mechanism 6, so as to prevent the material sheet from being discharged unsmoothly, and ensure that the material sheet can accurately enter the next process.

[0056] In one embodiment, the second feeding mechanism 3 includes a second adsorption platform 31 and a second conveyor belt 32. The second adsorption platform 31 is provided with a rear adsorption chamber. The second conveyor belt 32 is provided with a second adsorption hole 321. The second adsorption hole 321 is connected to the rear adsorption chamber to adsorb the material sheet placed on the second conveyor belt 32, so that the material sheet on the second conveyor belt 32 remains flat under the negative pressure of the rear adsorption chamber, thereby preventing the material sheet from warping on the second conveyor belt 32.

[0057] In one embodiment, the rear adsorption chamber includes a third adsorption chamber 3111 and a plurality of fourth adsorption chambers 3112, and the plurality of fourth adsorption chambers 3112 are independent of each other and arranged around the third adsorption chamber 3111. A plurality of second adsorption holes 321 are arranged, and the third adsorption chamber 3111 and the fourth adsorption chamber 3112 are respectively connected to the second adsorption holes 321 in the corresponding areas on the second conveyor belt 32. Through the selective opening of the third adsorption chamber 3111 and the plurality of fourth adsorption chambers 3112, a plurality of adsorption areas of different sizes can be combined. When conveying the sheet material, the third adsorption chamber 3111 and different numbers of fourth adsorption chambers 3112 are selectively opened according to the size of the sheet material, so that the adsorption area on the second adsorption platform 31 can adapt to the size of the sheet material, and can further ensure the positioning accuracy of the sheet materials of various different sheet pairs. Among them, the structure of the third adsorption chamber 3111 is the same as that of the first adsorption chamber 2111, and the structure of the fourth adsorption chamber 3112 is the same as that of the second adsorption chamber 2112, which will not be repeated here.

[0058] In one embodiment, the second adsorption platform 31 includes a third adsorption member 311 and a fourth adsorption member 312, the third adsorption chamber 3111 and a plurality of fourth adsorption chambers 3112 are arranged on the third adsorption member 311, and the fourth adsorption member 312 is connected to the third adsorption member 311 to close the third adsorption chamber 3111 and the fourth adsorption chamber 3112.

[0059] Among them, the third adsorption chamber 3111 and multiple fourth adsorption chambers 3112 are in the form of a groove 2122 structure on the third adsorption component 311 and are recessed in the direction away from the fourth adsorption component 312. The opening directions of the third adsorption chamber 3111 and the fourth adsorption chamber 3112 are both toward the fourth adsorption component 312. In this way, after the fourth adsorption component 312 is covered on the third adsorption component 311, the opening of the third adsorption chamber 3111 and the opening of the fourth adsorption chamber 3112 can be closed, so that the third adsorption chamber 3111 and the fourth adsorption chamber 3112 form a closed cavity.

[0060] The structure of the third adsorption member 311 is the same as that of the first adsorption member 211 , and the structure of the fourth adsorption member 312 is the same as that of the second adsorption member 212 , which will not be described in detail herein.

[0061] In one embodiment, a plurality of second connection holes 3121 are provided on the fourth adsorption member 312, and at least one of the third adsorption chamber 3111 and the fourth adsorption chamber 3112 is connected to the second adsorption hole 321 through the second connection hole 3121. The third adsorption chamber 3111 and / or the fourth adsorption chamber 3112 is connected to the second adsorption hole 321 through the second connection hole 3121, so that when vacuum adsorption is generated, the adsorption force can be effectively transferred from the adsorption chamber to the second adsorption hole 321, and then act on the material sheet placed on the second conveyor belt 32, thereby ensuring that the adsorption function of the entire adsorption system is normally exerted and the material sheet can be firmly adsorbed.

[0062] In one embodiment, the second feeding mechanism 3 further includes a second driving assembly 33, which is installed on the second adsorption platform 31, and the second driving assembly 33 can drive the second conveyor belt 32 to move, so as to drive the material sheet to move along the first direction and leave the machine 1. The structure of the second driving assembly 33 is the same as that of the first driving assembly 23, and will not be repeated here.

[0063] In one embodiment, the first detection mechanism 4 can move along the first direction and detect one side surface of the material sheet in the thickness direction, and the second detection mechanism 5 can move along the first direction and detect the other side surface of the material sheet in the thickness direction, thereby realizing double-sided detection of the material sheet by the first detection mechanism 4 and the second detection mechanism 5.

[0064] In one embodiment, the PCB detection equipment also includes a first support seat 8, a second support seat 9, a third drive assembly 81 and a fourth drive assembly 91. The first support seat 8 and the second support seat 9 are installed on the machine 1. The first detection mechanism 4 is installed on the first support seat 8 and is located above the first feeding mechanism 2. The second detection mechanism 5 is installed on the second support seat 9 and is located above the second feeding mechanism 3. The first support seat 8 provides a stable installation foundation for the first detection mechanism 4, and the second support provides a stable installation foundation for the second detection mechanism 5.

[0065] The third driving component 81 is installed on the first supporting seat 8, and the third driving component 81 is used to drive the first detecting mechanism 4 to move along the first direction, so that the first detecting mechanism 4 and the material plate on the first feeding mechanism 2 move relative to each other, thereby facilitating the first detecting mechanism 4 to detect the surface on one side of the thickness direction of the material plate.

[0066] The fourth driving assembly 91 is installed on the second supporting seat 9, and the fourth driving assembly 91 is used to drive the second detection mechanism 5 to move along the first direction, so that the second detection mechanism 5 and the material plate on the second feeding mechanism 3 move relative to each other, thereby facilitating the second detection mechanism 5 to detect the surface on the other side of the thickness direction of the material plate.

[0067] In one embodiment, the first support seat 8 includes a first base 82 and a first beam 83, the first beam 83 is slidably connected to the first base 82, the first detection mechanism 4 is installed on the first beam 83, and the third drive assembly 81 is installed on the first base 82. The third drive assembly 81 can drive the beam to move along the first direction, thereby driving the third drive assembly 81 to move along the first direction to realize the detection of the material plate.

[0068] The third driving component 81 includes a first linear motor 811 and a second linear motor 812, which are arranged opposite to each other on the first base 82, and one end of the first beam 83 is connected to the output end of the first linear motor 811, and the other end of the first beam 83 is connected to the output end of the second linear motor 812. The first linear motor 811 and the second linear motor 812 can drive the first beam 83 to move.

[0069] The structure of the second support base 9 is the same as that of the first support base 8, and will not be described in detail here.

[0070] In one embodiment, the first detection mechanism 4 includes a first camera assembly 41, a first camera driver 42 and a first roller assembly 43. The first camera assembly 41 is slidably connected to the first support seat 8, and the first roller assembly 43 is installed on the first camera assembly 41. The first camera driver 42 is used to drive the first camera assembly 41 to approach or move away from the first feeding mechanism 2 along the second direction. The first camera assembly 41 can reciprocate along the second direction relative to the first support seat 8, thereby adjusting the distance between the first camera assembly 41 and the material plate. Among them, the first camera driver 42 is a motor.

[0071] When the first camera driving member 42 drives the first camera assembly 41 to move along the second direction, the first roller assembly 43 moves with the first camera assembly 41. When the first detection mechanism 4 moves along the first direction, the first roller assembly 43 can move along the first direction and flatten the material sheet on the first feeding mechanism 2. As the first roller assembly 43 moves, the first roller assembly 43 can pass over the surface of the material sheet, assisting the first adsorption platform 21 in adsorbing the material sheet, so that the material sheet maintains good flatness and prevents the material sheet from warping.

[0072] In one embodiment, the first roller assembly 43 includes a roller connector 431, a guide rod 432, a bearing 433, a connecting rod 434 and a plurality of rollers 435. The roller connector 431 is disposed on the first camera assembly 41. The plurality of rollers 435 are spaced apart on the roller connector 431. The plurality of rollers 435 are in contact with the material sheet to ensure that the material sheet can be completely attached to the first adsorption platform 21.

[0073] The bearing 433 is arranged on the roller connecting member 431, the guide rod 432 extends along the second direction b, one end of the guide rod 432 is connected to the roller 435, and one end of the guide rod 432 is passed through the bearing 433, and the guide rod 432 can be guided by the bearing 433, so that the roller 435 can move up and down along the second direction. When the roller 435 contacts the surface of the material sheet, the movement of the guide rod 432 in the bearing 433 can play a buffering role when the material sheet contacts the roller 435, so as to prevent the roller 435 from exerting too much force on the surface of the material sheet and damaging the material sheet. Among them, two guide rods 432 are provided, one end of one guide rod 432 is connected to the roller 435, and the other end is connected to one end of the connecting rod 434 after passing through the corresponding bearing 433, and one end of the other guide rod 432 is connected to the roller 435, and the other end is connected to the other end of the connecting rod 434 after passing through the corresponding bearing 433. The connecting rod 434 is located on the side of the roller connecting member 431 away from the roller 435. The connecting rod 434 ensures that the guide rod 432 will not be separated from the bearing 433 when moving up and down.

[0074] In one embodiment, the second detection mechanism 5 includes a second camera assembly 51, a second camera driver 52 and a second roller assembly 53. The second camera assembly 51 is slidably connected to the second support seat 9, and the second roller assembly 53 is installed on the second camera assembly 51. The second camera driver 52 is used to drive the second camera assembly 51 to approach or move away from the second feeding mechanism 3 along the second direction, so that the second camera assembly 51 can reciprocate along the second direction relative to the second support seat 9, thereby adjusting the distance between the second camera assembly 51 and the material plate. Among them, the second camera driver 52 is a motor.

[0075] When the second detection mechanism 5 moves along the first direction, the second roller assembly 53 can move along the first direction and flatten the material sheet on the second feeding mechanism 3. As the second roller assembly 53 moves, the second roller assembly 53 can pass over the surface of the material sheet, assisting the second adsorption platform 31 in adsorbing the material sheet, so that the material sheet maintains good flatness and prevents the material sheet from warping. The structure of the second roller assembly 53 is the same as that of the first roller assembly 43, and will not be repeated here.

[0076] In one embodiment, the flipping conveying mechanism 6 includes a flipping mechanism 61, a fifth driving assembly 62, a first conveying portion 63 and a second conveying portion 64. The first conveying portion 63 and the second conveying portion 64 are installed on the flipping mechanism 61. The fifth driving assembly 62 is used to drive the first conveying portion 63 and the second conveying portion 64 to move closer to or away from each other, so as to clamp the material sheet between the first conveying portion 63 and the second conveying portion 64 or release the material sheet. The flipping mechanism 61 is used to flip the material sheet clamped between the first conveying portion 63 and the second conveying portion 64.

[0077] The first conveying part 63 is driven to move by the fifth driving assembly 62, and the second conveying part 64 is driven to move, so that the first conveying part 63 and the second conveying part 64 can reliably clamp the material sheets of different thicknesses, ensure that the material sheets will not be displaced or shake during the flipping process, and the material sheets will not bend or deform, thereby ensuring reliability and reducing the difficulty of flipping caused by problems such as large material sheet size and uneven gripping force on the material sheets. After the first conveying part 63 and the second conveying part 64 clamp the material sheet, the flipping mechanism 61 can drive the first conveying part 63 and the second conveying part 64 to rotate together around an axis, thereby realizing the flipping of the material sheet, which is helpful to realize the double-sided detection of the material sheet without manual flipping, thereby improving the detection efficiency and accuracy.

[0078] In one embodiment, the fifth driving assembly 62 includes a first conveying driving member 621 and a second conveying driving member 622. The first conveying driving member 621 can drive the first conveying portion 63 to move back and forth along the second direction, and the second conveying driving member 622 can drive the second conveying portion 64 to move back and forth along the second direction. The first direction and the second direction are not parallel and do not overlap. By driving the first conveying driving member 621 and the second conveying driving member 622 separately, the flexibility of the movement of the first conveying portion 63 and the second conveying portion 64 can be increased.

[0079] Specifically, when the first conveying part 63 is above the second conveying part 64, the first conveying part 63 remains stationary, and the second conveying driving member 622 drives the second conveying part 64 to approach the first conveying part 63, thereby clamping the material sheet. After the flipping mechanism 61 flips, the first conveying part 63 is below, the second conveying part 64 is above, the first conveying part 63 remains stationary, and the second conveying driving member 622 drives the second conveying part 64 away from the first conveying part 63, thereby releasing the material sheet. When the next material sheet flips, the second conveying part 64 is above the first conveying part 63, the second conveying part 64 remains stationary, and the first conveying driving member 621 drives the first conveying part 63 to approach the second conveying part 64, thereby clamping the material sheet. After the flipping mechanism 61 flips, the first conveying part 63 returns to the top, the second conveying part 64 is below the first conveying part 63, and the first conveying driving member 621 drives the first conveying part 63 away from the second conveying part 64, thereby releasing the material sheet. This cycle repeats.

[0080] In one embodiment, both the first conveying driving member 621 and the second conveying driving member 622 are cylinders. When the sheet material is not clamped, the first conveying portion 63 is above the second conveying portion 64, and the first conveying driving member 621 and the second conveying driving member 622 remain retracted. After the sheet material enters between the first conveying portion 63 and the second conveying portion 64, the output end of the second conveying driving member 622 extends and drives the second conveying portion 64 to move toward the first conveying portion 63 for clamping. After flipping, the output end of the second conveying driving member 622 retracts, driving the second conveying portion 64 away from the first conveying portion 63, and the sheet material can be released.

[0081] In one embodiment, the flip mechanism 61 includes a flip assembly 611 and a flip driving member 612 for driving the flip assembly 611 to rotate, and a first conveying driving member 621 and a second conveying driving member 622 are installed on the flip assembly 611. The flip driving member 612 is a rotary motor, and the flip assembly 611 is a frame structure that can rotate around the central axis of the output end of the rotary motor.

[0082] The first conveying part 63 includes a first support member 631, a first mounting seat 632 and a second mounting seat 633. The first mounting seat 632 and the second mounting seat 633 are arranged on the first support member 631. The output end of the first conveying driving member 621 is connected to the first mounting seat 632. The second mounting seat 633 is slidably connected to the flip assembly 611. This sliding connection provides a guide for the movement of the first conveying part 63 on the flip assembly 611. When the first conveying driving member 621 drives the first conveying part 63 to move in the second direction, the second mounting seat 633 can slide relative to the flip assembly 611, so as to ensure that the first conveying part 63 moves in a predetermined direction, and ensure that the force uniformity of the material sheet when the first conveying part 63 and the second conveying part 64 clamp the material sheet.

[0083] Among them, in the third direction c, the first support member 631 is provided with a first mounting seat 632 and a second mounting seat 633 on both opposite sides, and two second mounting seats 633 are provided on each side of the first support member 631, and there are four second mounting seats 633 in total, which further ensures the movement stability of the first conveying part 63.

[0084] In one embodiment, the first support member 631 includes a first support plate 6311, a first side plate 6312 and a second side plate 6313. The first support plate 6311 is connected between the first side plate 6312 and the second side plate 6313. The first support plate 6311 is connected between the first side plate 6312 and the second side plate 6313, forming a frame-like structure. This frame structure can prevent the first support member 631 from being deformed or damaged, thereby ensuring the normal operation of the first conveying part 63. The material sheet on the first conveying part 63 can also be supported by the first support plate 6311.

[0085] A first mounting seat 632 and two second mounting seats 633 are disposed on the first side plate 6312 , and a first mounting seat 632 and two second mounting groups are disposed on the second side plate 6313 .

[0086] In one embodiment, the second conveying part 64 includes a second support member 641, a third mounting seat 642 and a fourth mounting seat 643, the third mounting seat 642 and the fourth mounting seat 643 are arranged on the second support member 641, the output end of the second conveying driving member 622 is connected to the third mounting seat 642, and the fourth mounting seat 643 is slidably connected to the flip assembly 611, and the sliding connection provides a guide for the movement of the second conveying part 64 on the flip assembly 611. When the second conveying driving member 622 drives the second conveying part 64 to move along the second direction, the fourth mounting seat 643 can slide relative to the flip assembly 611, so as to ensure that the second conveying part 64 moves in a predetermined direction, and ensure that the force uniformity of the material sheet when the first conveying part 63 and the second conveying part 64 clamp the material sheet.

[0087] The structure of the second support member 641 is the same as that of the first support member 631 , the structure of the third mounting seat 642 is the same as that of the first mounting seat 632 , and the structure of the fourth mounting seat 643 is the same as that of the second mounting seat 633 , which will not be repeated here.

[0088] In one embodiment, a first connecting portion 6111 and a second connecting portion 6112 are provided on the flip assembly 611, a first sliding rod 61111 is provided on the first connecting portion 6111, a first sliding sleeve 6331 is provided on the second mounting seat 633, and the first sliding rod 61111 is passed through the first sliding sleeve 6331 to guide when the first conveying portion 63 moves along the second direction. A second sliding rod 61121 is disposed on the second connecting portion 6112 , and a second sliding sleeve 6431 is disposed on the fourth mounting seat 643 . The second sliding rod 61121 passes through the second sliding sleeve 6431 to guide the second conveying portion 64 when it moves along the second direction.

[0089] In one embodiment, the flipping assembly 611 includes a first rotating plate 613, a second rotating plate 614 and a plurality of support rods 615, wherein the plurality of support rods 615 are connected between the first rotating plate 613 and the second rotating plate 614, and the first rotating plate 613 and the second rotating plate 614 can be connected together through the support rods 615. When the flipping assembly 611 flips the material plate, the support rods 615 can prevent the first rotating plate 613 and the second rotating plate 614 from being deformed during the rotation process, thereby ensuring the stability of the flipping process.

[0090] The first rotating plate 613 is provided with a first connection portion 6111 and a second connection portion 6112, and the second rotating plate 614 is provided with a first connection portion 6111 and a second connection portion 6112. In the third direction, the second mounting seat 633 on one side of the first supporting member 631 can be connected to the first connection portion 6111 on the first rotating plate 613, and the second mounting seat 633 on the other side of the first supporting member 631 can be connected to the first connection portion 6111 on the second rotating plate 614. In the third direction, the fourth mounting seat 643 on one side of the second supporting member 641 can be connected to the second connection portion 6112 on the first rotating plate 613, and the fourth mounting seat 643 on the other side of the second supporting member 641 can be connected to the second connection portion 6112 on the second rotating plate 614.

[0091] In one embodiment, the first conveying part 63 includes a first belt 634 and a first belt driving member 635, the first belt driving member 635 is used to drive the first belt 634 to move, so that the first belt 634 can convey the material plate placed on the first belt 634 along the first direction, and the second conveying part 64 includes a second belt 644 and a second belt driving member 645, the second belt driving member 645 is used to drive the second belt 644 to move, so that the second belt 644 can convey the material plate placed on the second belt 644 along the first direction. Through the first belt 634 and the second belt 644, before and after the flipping, the first conveying part 63 and the second conveying part 64 can both drive the material plate to move, so as to realize the transmission of the material plate between the front and rear processes of the flipping conveying mechanism 6.

[0092] For example, when the first conveying part 63 is above the second conveying part 64, the previous process sends the material sheet to the second belt 644, and the second belt 644 can drive the material sheet to move. When the material sheet reaches the position, the first conveying part 63 and the second conveying part 64 clamp the material sheet. After the flipping mechanism 61 flips the material sheet, the first conveying part 63 is below the second conveying part 64. At this time, the material sheet falls onto the first belt 634, and the flipped material sheet is sent to the next process through the first belt 634.

[0093] The first belt driving member 635 and the second belt driving member 645 are motors, preferably drum motors.

[0094] In one embodiment, the PCB inspection device further comprises a clapper mechanism 7 mounted on the machine platform 1 , and the clapper mechanism 7 is arranged on a side of the first feeding mechanism 2 away from the flipping conveying mechanism 6 in the first direction.

[0095] The clapper mechanism 7 includes a support platform 71, a roller assembly 72, a movable assembly 73 and a fixed assembly 74. The support platform 71 is arranged on the machine platform 1, and the roller assembly 72 is installed on the support platform 71. The roller assembly 72 can drive the material plate to move along the first direction toward the first feeding mechanism 2.

[0096] The movable assembly 73 and the fixed assembly 74 are arranged on opposite sides of the support platform 71 in the third direction. When the roller assembly 72 drives the sheet to move, the movable assembly 73 can drive the sheet to move toward the fixed assembly 74 and abut against the fixed assembly 74. The first direction and the third direction are not parallel and do not overlap.

[0097] The spacing between the movable component 73 and the fixed component 74 is constant. When the movable component 73 moves toward the fixed component 74 along the third direction, the distance moved by the movable component 73 in the third direction is obtained. The absolute value of the difference between the spacing between the movable component 73 and the fixed component 74 and the distance moved by the movable component 73 can be used to obtain the size of the material sheet in the third direction. The size of the material sheet in the third direction is the width of the material sheet.

[0098] In one embodiment, the clapping mechanism 7 also includes a motor, which can drive the movable component 73 to move along the third direction. The distance that the motor drives the movable component 73 to move can be obtained through an encoder or other means, thereby facilitating obtaining the width data of the material plate.

[0099] In one embodiment, the clapper mechanism 7 further includes an edge sensor 75, a first in-position sensor 76, and a second in-position sensor 77. The edge sensor 75 is disposed on a side of the clapper mechanism 7 close to the first feeding mechanism 2. The roller assembly 72 can drive the material sheet to move along the first direction. When the edge sensor 75 detects the material sheet, the front end of the material sheet can be accurately located. After finding the front end of the material sheet, the motor drives the movable assembly 73 and drives the material sheet to move along the third direction until the material sheet abuts against the fixed assembly 74.

[0100] The first in-place sensor 76 is disposed on the movable component 73. When the movable component 73 pushes the sheet, the first in-place sensor 76 can detect the sheet and is triggered. When the sheet abuts against the fixed component 74, the second in-place sensor 77 can detect the sheet and is triggered. At this time, the first in-place sensor 76 and the second in-place sensor 77 are both in a triggered state, indicating that the sheet has been pushed into place.

[0101] On the other hand, an embodiment of the present invention provides a detection method, based on the PCB detection device of the above embodiment, comprising the following steps: S1, feeding the material sheet into the first feeding mechanism 2, the first feeding mechanism 2 adsorbs the material sheet and can adsorb and position the material sheet, at this time, one side surface of the material sheet in the thickness direction faces upward; S2, the first detection mechanism 4 can move along the first direction to detect one side surface of the material sheet in the thickness direction; S3, the first feeding mechanism 2 sends the material sheet detected by the first detection mechanism 4 to the flip conveying mechanism 6, and the material sheet enters between the first conveying part 63 and the second conveying part 64, and driven by the fifth driving component 62, the first conveying part 63 and the second conveying part 64 can clamp the material sheet or release the material sheet; S4, the flipping conveying mechanism 6 flips the material sheet and sends it to the second feeding mechanism 3. When the material sheet is clamped between the first conveying part 63 and the second conveying part 64, the flipping assembly 611 rotates under the drive of the flipping driving member 612, and drives the material sheet clamped between the first conveying part 63 and the second conveying part 64 to flip. The material sheet is sent to the second feeding mechanism 3 through the first conveying part 63 or the second conveying part 64. The second feeding mechanism 3 absorbs the material sheet and can absorb and position the material sheet. At this time, the other side surface of the thickness direction of the flipped material sheet faces upward; S5, the second detection mechanism 5 can move along the first direction to detect the other side surface of the material sheet in the thickness direction; S6. The second feeding mechanism 3 feeds out the material sheet after inspection.

[0102] In this embodiment, the material sheet is adsorbed and positioned by the first feeding mechanism 2, so that when the first detection mechanism 4 detects one side surface of the material sheet, the material sheet remains flat on the first feeding mechanism 2, thereby improving the clarity of the first detection mechanism 4 when taking pictures. The material sheet is turned over by the flipping conveying mechanism 6, so that when the material sheet is adsorbed and positioned by the second feeding mechanism 3, the other side surface of the material sheet faces the second detection mechanism 5, and when the second detection mechanism 5 detects the other side surface of the material sheet, the material sheet remains flat on the second feeding mechanism 3, thereby improving the clarity of the second detection mechanism 5 when taking pictures, and can meet the detection requirements of high-precision PCBs.

[0103] In one embodiment, the material sheet is fed into the first feeding mechanism 2, and the first feeding mechanism 2 absorbs the material sheet and includes: Measuring a first dimension of the material sheet in a third direction, the first dimension being the width of the material sheet; wherein the first direction and the third direction are not parallel and do not overlap; After the material sheet is placed in place, the conveyor belt provided on the first feeding mechanism 2 is stopped, and the material sheet is adsorbed and positioned on the conveyor belt. At this time, the first detection mechanism 4 can move relative to the material sheet, so that the first detection mechanism 4 can take an image of the entire surface of the material sheet; The area of ​​the adsorption chamber provided on the first feeding mechanism 2 is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

[0104] The adsorption chamber arranged on the first feeding mechanism 2 is a front adsorption chamber, which includes a first adsorption chamber 2111 and a plurality of second adsorption chambers 2112. The plurality of second adsorption chambers 2112 are independent of each other and are arranged around the first adsorption chamber 2111. According to the width of the material plate, the first adsorption chamber 2111 and different numbers of second adsorption chambers 2112 can be selectively opened to obtain a variety of adsorption areas of different sizes in combination, so that the adsorption area of ​​the front adsorption chamber on the first feeding mechanism 2 can adapt to the size of the plate material, and can further ensure the positioning accuracy of the material plates of various different plate pairs.

[0105] By adjusting the adaptive adsorption area, the material sheet on the first feeding mechanism 2 has a better adsorption effect, so that the material sheet on the first feeding mechanism 2 is relatively flat, and it is not easy to have excessive adsorption or insufficient suction, which is beneficial to improving the clarity of the first detection mechanism 4 in taking images of the material sheet.

[0106] In one embodiment, measuring a first dimension of the sheet in a third direction comprises: The material sheet is placed on the clapping mechanism 7, wherein the clapping mechanism 7 is located on a side of the first feeding mechanism 2 away from the flipping conveying mechanism 6 in the first direction, and the roller assembly 72 of the clapping mechanism 7 can drive the material sheet to move along the first direction.

[0107] Obtain a first distance in a third direction between a movable component 73 provided on the clapper mechanism 7 and a fixed component 74 provided on the clapper mechanism 7. The first distance can be easily measured by a tool after the movable component 73 and the fixed component 74 are installed on the support platform 71 of the clapper mechanism 7.

[0108] After the roller assembly 72 drives the material sheet to move until the front end of the material sheet is detected by the edge sensor 75, the movable assembly 73 starts to move and pushes the material sheet toward the fixed assembly 74 until the material sheet rests on the fixed assembly 74, and a second distance moved by the movable assembly 73 in the third direction is obtained, wherein the movable assembly 73 moves driven by the driving motor 231, and the second distance is calculated by the number of rotations of the driving motor 231.

[0109] By calculating the difference between the first distance and the second distance, the first size can be obtained.

[0110] In one embodiment, the flipping conveying mechanism 6 flips the material sheet and sends it to the second feeding mechanism 3, and the second feeding mechanism 3 absorbs the material sheet and includes: After the flipping mechanism 61 flips over, the material sheet is sent to the second feeding mechanism 3 through the first conveying part 63 or the conveying part. After the material sheet is in place, the conveying belt provided on the second feeding mechanism 3 is stopped to facilitate the adsorption and positioning of the material sheet. The area of ​​the adsorption chamber provided on the second feeding mechanism 3 is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

[0111] The adsorption chamber arranged on the second feeding mechanism 3 is a rear adsorption chamber, which includes a third adsorption chamber 3111 and a plurality of fourth adsorption chambers 3112. The plurality of fourth adsorption chambers 3112 are independent of each other and are arranged around the third adsorption chamber 3111. According to the width of the material plate, the third adsorption chamber 3111 and different numbers of fourth adsorption chambers 3112 can be selectively opened to obtain a variety of adsorption areas of different sizes in combination, so that the adsorption area of ​​the rear adsorption chamber on the second feeding mechanism 3 can adapt to the size of the plate material, and can further ensure the positioning accuracy of the material plates of various different plate pairs.

[0112] By adjusting the adaptive adsorption area, the material sheet on the second feeding mechanism 3 has a better adsorption effect, so that the material sheet on the second feeding mechanism 3 is relatively flat, and it is not easy to have excessive adsorption or insufficient suction, which is beneficial to improving the clarity of the second detection mechanism 5 in taking images of the material sheet.

[0113] In one embodiment, the first detection mechanism 4 detects one side surface of the material sheet in the thickness direction, including: A second dimension of the sheet material in the first direction is measured, where the second dimension is the length of the sheet material.

[0114] The first detection mechanism 4 is controlled to move along the first direction, and the scanning range of the first detection mechanism 4 in the first direction is controlled based on the second size, so that the scanning range of the first detection mechanism 4 matches the length of the material plate, avoiding scanning of unnecessary areas, reducing the time required for detection, and improving detection efficiency.

[0115] Measure the thickness of the material sheet, and adjust the focal length of the first camera assembly 41 provided on the first detection mechanism 4 based on the thickness; wherein a thickness gauge is provided on the first detection mechanism 4, and the thickness of the material sheet can be measured by the thickness gauge, and the focal length of the first camera assembly 41 is adjusted according to the thickness, thereby ensuring that the first camera assembly 41 can produce clear images.

[0116] After adjusting the focal length, the first camera assembly 41 takes an image of one side surface of the material plate in the thickness direction, so as to identify various defects on the material plate.

[0117] In one embodiment, measuring the second dimension of the sheet in the first direction comprises: Obtain an estimated size of the sheet in the first direction; the estimated size can be measured by the edge sensor 75 on the clapper mechanism 7, and during the movement of the sheet, the length of the sheet can be estimated by the edge sensor 75.

[0118] The precise size of the sheet in the first direction is obtained. The precise size is detected by an array sensor arranged on the first detection mechanism 4. The array sensor can follow the first detection mechanism 4 to move in the first direction. After the control system of the first camera assembly 41 receives the signal from the array sensor, it triggers the first camera assembly 41 to take pictures according to the pre-set control logic. After that, the second size is obtained based on the estimated size and the precise size. Among them, the approximate range of the length of the sheet can be obtained by the estimated size. Within the approximate range of the length of the sheet, the array sensor can detect smaller displacement changes, which can provide more accurate length information. When the estimated size and the precise size are used together, a large range of length information is first obtained by using the low-precision estimated size, and then the high-precision precise size is used for precise adjustment, and finally the effect of improving absolute accuracy is achieved.

[0119] Usually, array sensors are composed of multiple sensors, which are arranged in a certain matrix structure to cover the entire length of the material plate. Since multiple sensors are used for simultaneous measurement and algorithm processing, the measurement accuracy can be significantly improved.

[0120] In one embodiment, the second detection mechanism 5 detects the other side surface of the material sheet in the thickness direction, including: The second detecting mechanism 5 is controlled to move along the first direction, so that the second detecting mechanism 5 can move relative to the material plate on the second feeding mechanism 3 .

[0121] The scanning range of the second detection mechanism 5 in the first direction is controlled based on the second size, so that the scanning range of the second detection mechanism 5 matches the length of the material plate, avoiding scanning of unnecessary areas, reducing the time required for detection, and improving detection efficiency.

[0122] The focal length of the second camera assembly 51 disposed on the second detection mechanism 5 is adjusted based on the thickness, and the focal length of the second camera assembly 51 is adjusted according to the thickness, thereby ensuring that the second camera assembly 51 can produce clear images.

[0123] After adjusting the focal length, the second camera assembly 51 takes an image of the other side surface of the material plate in the thickness direction, so as to identify various defects on the material plate.

[0124] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A PCB testing device, characterized in that: It includes a machine platform, a first feeding mechanism, a second feeding mechanism, a first detection mechanism, a flipping conveying mechanism and a second detection mechanism, wherein the first feeding mechanism, the second feeding mechanism, the first detection mechanism, the flipping conveying mechanism and the second detection mechanism are all arranged on the machine platform, and the flipping conveying mechanism is arranged between the first feeding mechanism and the second feeding mechanism along a first direction; The first detection mechanism can detect one side surface of the material sheet adsorbed on the first feeding mechanism in the thickness direction, and the first feeding mechanism can deliver the material sheet detected by the first detection mechanism to the flipping conveying mechanism; The flipping and conveying mechanism is used to flip the material sheet and send it to the second feeding mechanism. The second detection mechanism can detect the other side surface of the material sheet adsorbed on the second feeding mechanism in the thickness direction. The second feeding mechanism can send out the material sheet after the detection. The first detection mechanism and the second detection mechanism are located on the same side of the material sheet in the thickness direction.

2. The PCB detection device according to claim 1, characterized in that: The first feeding mechanism includes a first adsorption platform and a first conveyor belt. The first adsorption platform is provided with a front adsorption chamber. The first conveyor belt is provided with a first adsorption hole. The first adsorption hole is connected to the front adsorption chamber to adsorb the material sheet placed on the first conveyor belt.

3. The PCB detection device according to claim 2, characterized in that: The front adsorption chamber includes a first adsorption chamber and a plurality of second adsorption chambers, wherein the plurality of second adsorption chambers are independent of each other and are arranged around the first adsorption chamber; A plurality of the first adsorption holes are provided, and the first adsorption chamber and the second adsorption chamber are respectively connected to the first adsorption holes in corresponding areas on the first conveyor belt.

4. The PCB detection device according to claim 3, characterized in that: The first adsorption platform includes a first adsorption member and a second adsorption member, the first adsorption chamber and a plurality of the second adsorption chambers are arranged on the first adsorption member, and the second adsorption member is connected to the first adsorption member to close the first adsorption chamber and the second adsorption chamber; The second adsorption member is provided with a plurality of first connection holes, and at least one of the first adsorption chamber and the second adsorption chamber is connected with the first adsorption hole through the first connection hole.

5. The PCB detection device according to claim 2, characterized in that: The first feeding mechanism also includes a first driving component, which is installed on the first adsorption platform. The first driving component can drive the first conveyor belt to move, so as to drive the material plate to move along the first direction toward the flip conveying mechanism.

6. The PCB testing device according to claim 1, characterized in that: The second feeding mechanism includes a second adsorption platform and a second conveyor belt, the second adsorption platform is provided with a rear adsorption cavity, the second conveyor belt is provided with a second adsorption hole, and the second adsorption hole is connected with the rear adsorption cavity to adsorb the material plate placed on the second conveyor belt.

7. The PCB testing device according to claim 6, characterized in that: The rear adsorption chamber includes a third adsorption chamber and multiple fourth adsorption chambers, and the multiple fourth adsorption chambers are independent of each other and arranged around the third adsorption chamber; the second adsorption holes are arranged in multiple numbers, and the third adsorption chamber and the fourth adsorption chamber are respectively connected to the second adsorption holes in corresponding areas on the second conveyor belt.

8. The PCB testing device according to claim 7, characterized in that: The second adsorption platform includes a third adsorption member and a fourth adsorption member, the third adsorption chamber and a plurality of fourth adsorption chambers are arranged on the third adsorption member, and the fourth adsorption member is connected to the third adsorption member to close the third adsorption chamber and the fourth adsorption chamber; The fourth adsorption member is provided with a plurality of second connection holes, and at least one of the third adsorption chamber and the fourth adsorption chamber is connected with the second adsorption hole through the second connection hole.

9. The PCB testing device according to claim 6, characterized in that: The second feeding mechanism also includes a second driving component, which is installed on the second adsorption platform. The second driving component can drive the second conveyor belt to move, so as to drive the material sheet to move along the first direction and leave the machine.

10. The PCB testing device according to claim 1, characterized in that: The first detection component can move along the first direction and detect one side surface of the material sheet in the thickness direction, and the second detection component can move along the first direction and detect the other side surface of the material sheet in the thickness direction.

11. The PCB testing device according to claim 10, characterized in that: The PCB detection device further includes a first support seat, a second support seat, a third drive assembly and a fourth drive assembly, the first support seat and the second support seat are mounted on the machine platform, the first detection assembly is mounted on the first support seat and is located above the first feeding mechanism, and the second detection assembly is mounted on the second support seat and is located above the second feeding mechanism; The third driving assembly is used to drive the first detection mechanism to move along the first direction, and the fourth driving assembly is used to drive the second detection mechanism to move along the first direction.

12. The PCB testing device according to claim 11, characterized in that: The first detection assembly includes a first camera assembly, a first camera driving member and a first roller assembly, wherein the first camera assembly is slidably connected to the first support seat, the first roller assembly is mounted on the first camera assembly, and the first camera driving member is used to drive the first camera assembly to approach or move away from the first feeding mechanism; When the first detection mechanism moves along the first direction, the first roller assembly can move along the first direction and flatten the material plate on the first feeding mechanism.

13. The PCB testing device according to claim 11, characterized in that: The second detection assembly includes a second camera assembly, a second camera driving member and a second roller assembly, the second camera assembly is slidably connected to the second support seat, the second roller assembly is installed on the second camera assembly, and the second camera driving member is used to drive the second camera assembly to approach or move away from the second feeding mechanism; When the second detection mechanism moves along the first direction, the second roller assembly can move along the first direction and flatten the material plate on the second feeding mechanism.

14. The PCB detection device according to any one of claims 1 to 13, characterized in that: The flipping conveying mechanism comprises a flipping mechanism, a fifth driving assembly, a first conveying part and a second conveying part, wherein the first conveying part and the second conveying part are installed on the flipping mechanism, and the fifth driving assembly is used to drive the first conveying part and the second conveying part to move closer to or away from each other, so as to clamp the material sheet between the first conveying part and the second conveying part or release the material sheet; The flipping mechanism is used to flip the material plate clamped between the first conveying part and the second conveying part.

15. The PCB testing device according to claim 14, characterized in that: The fifth driving assembly includes a first conveying driving member and a second conveying driving member, the first conveying driving member can drive the first conveying part to reciprocate along the second direction, the second conveying driving member can drive the second conveying part to reciprocate along the second direction, and the first direction and the second direction are not parallel and do not overlap.

16. The PCB testing device according to claim 15, characterized in that: The flip mechanism includes a flip assembly and a flip driving member for driving the flip assembly to rotate, and the first conveying driving member and the second conveying driving member are installed on the flip assembly; The first conveying part comprises a first supporting member, a first mounting seat and a second mounting seat, wherein the first mounting seat and the second mounting seat are arranged on the first supporting member, the output end of the first conveying driving member is connected to the first mounting seat, and the second mounting seat is slidably connected to the flip assembly; The second conveying part includes a second support member, a third mounting seat and a fourth mounting seat, the third mounting seat and the fourth mounting seat are arranged on the second support member, the output end of the second conveying drive member is connected to the third mounting seat, and the fourth mounting seat is slidably connected to the flip assembly.

17. The PCB testing device according to claim 14, characterized in that: The first conveying part includes a first belt and a first belt driving member, wherein the first belt driving member is used to drive the first belt to move so that the first belt can convey the material plate placed on the first belt along the first direction; The second conveying portion includes a second belt and a second belt driving member, wherein the second belt driving member is used to drive the second belt to move so that the second belt can convey the material plate placed on the second belt along the first direction.

18. The PCB testing device according to any one of claims 1 to 13, characterized in that: The PCB inspection device further comprises a clapper mechanism installed on the machine platform, wherein the clapper mechanism is arranged on a side of the first feeding mechanism away from the flipping conveying mechanism in the first direction; The clapper mechanism includes a support platform, a roller assembly, a movable assembly and a fixed assembly, wherein the roller assembly is mounted on the support platform, and the roller assembly can drive the material plate to move along the first direction toward the first feeding mechanism; The movable component and the fixed component are arranged on opposite sides of the support platform in the third direction. When the roller assembly drives the material sheet to move, the movable component can drive the material sheet to move toward the fixed component and abut against the fixed component. The first direction and the third direction are not parallel and do not overlap.

19. A detection method, based on the PCB detection device according to any one of claims 1 to 18, characterized in that: include: Feeding the material sheet into the first feeding mechanism, and the first feeding mechanism adsorbing the material sheet; The first detection mechanism detects one side surface of the material plate in the thickness direction; The first feeding mechanism feeds the material plate detected by the first detecting mechanism to the flipping conveying mechanism; The flipping and conveying mechanism flips the material sheet and sends it to the second feeding mechanism, and the second feeding mechanism absorbs the material sheet; The second detection mechanism detects the other side surface of the material plate in the thickness direction; The second feeding mechanism feeds out the material sheet after detection.

20. The detection method according to claim 19, characterized in that The step of feeding the material sheet into the first feeding mechanism, wherein the first feeding mechanism absorbs the material sheet, comprises: Measuring a first dimension of the sheet in a third direction; wherein the first direction and the third direction are not parallel and do not overlap; After the material sheet is placed in place, the conveyor belt provided on the first feeding mechanism is stopped; The area of ​​the adsorption chamber provided on the first feeding mechanism is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

21. The detection method according to claim 20, characterized in that: The measuring of the first dimension of the sheet in the third direction comprises: Placing the material plate on a clapping mechanism; wherein the clapping mechanism is located on a side of the first feeding mechanism away from the flipping conveying mechanism in the first direction; Acquire a first distance in the third direction between a movable component provided on the clapper mechanism and a fixed component provided on the clapper mechanism; The movable component pushes the material plate against the fixed component, and obtains a second distance moved by the movable component in the third direction; The difference between the first distance and the second distance is calculated to obtain the first size.

22. The detection method according to claim 20, characterized in that: The flipping and conveying mechanism flips the material sheet and sends it to the second feeding mechanism, and the second feeding mechanism adsorbs the material sheet and includes: After the material plate is in place, the conveyor belt provided on the second feeding mechanism is stopped; The area of ​​the adsorption chamber provided on the second feeding mechanism is adjusted based on the first size, and adsorption is turned on so that the material sheet is adsorbed and positioned.

23. The detection method according to claim 19, characterized in that: The first detection mechanism detects one side surface of the material plate in the thickness direction, including: measuring a second dimension of the sheet in the first direction; Controlling the first detection mechanism to move along the first direction, and controlling the scanning range of the first detection component in the first direction based on the second size; Measuring the thickness of the material plate, and adjusting the focal length of the first camera assembly provided on the first detection assembly based on the thickness; The first camera assembly takes pictures.

24. The detection method according to claim 23, characterized in that: The measuring a second dimension of the sheet material in the first direction comprises: Obtaining an estimated size of the sheet in the first direction; The precise size of the sheet material in the first direction is obtained, and the second size is obtained based on the estimated size and the precise size.

25. The detection method according to claim 23, characterized in that: The second detection mechanism detects the other side surface of the material plate in the thickness direction, including: controlling the second detection mechanism to move along the first direction; controlling a scanning range of the second detection component in the first direction based on the second size; adjusting a focal length of a second camera assembly disposed on the second detection assembly based on the thickness; The second camera assembly takes pictures.

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