Conveying line for PCB detection

Abstract

The utility model discloses a conveying line for PCB detection, which is used for being installed in an oven, at least one detection mechanism is arranged on a conveying line body, and the detection mechanism comprises an upper detection assembly and a lower detection assembly which are respectively used for detecting components at the upper part and the lower part of a PCB; the upper detection assembly comprises an upper mold capable of moving up and down, the bottom of the upper mold is provided with a plurality of cavities matched with the PCBs in shape, and a plurality of detection columns are arranged in the cavities; the lower detection assembly comprises a lower die capable of moving up and down, the upper portion of the lower die is provided with a positioning block, the positioning block is provided with a groove, and a detection needle is arranged in the groove. According to the PCB detection device, after the PCB is conveyed to the position where the detection mechanism is located through the conveying line, the upper detection assembly and the lower detection assembly detect components on the upper portion and the bottom of the PCB respectively, the PCB continues to be conveyed backwards through the conveying line after detection is completed, manual feeding, discharging and detection of the PCB are not needed, and the detection efficiency of the PCB is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB detection, in particular to a conveyor line for PCB board detection. Background Art

[0002] Traditional PCB board inspection equipment mainly uses full manual operation mode, where the operator manually loads the material, performs manual testing, and then the operator takes the material; or uses semi-automatic operation mode, where the operator loads the material, performs automatic testing, and then the operator takes the material. It cannot achieve full automation and has low production efficiency. Especially for high-temperature testing of PCB boards, manual loading and unloading is inefficient.

[0003] After the PCB board is processed, it is necessary to test the performance of the PCB board in various aspects under high temperature environment. If it relies on manual loading and unloading, firstly, the efficiency is relatively low, and the high temperature environment is not suitable for manual loading and unloading, which will have certain safety hazards; secondly, it is impossible to manually test the PCB board in a high temperature environment, and it is impossible to manually test the PCB board in a high temperature environment. Therefore, there will be great inconvenience. Utility Model Content

[0004] The utility model aims to solve the above problems and designs a conveyor line for PCB board detection, which solves the problems of uneven heating of workpieces and difficulty in material removal caused by baking workpieces in industrial ovens.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is a conveyor line for PCB board detection, which is used to be installed in an oven, and includes a conveyor line body, on which at least one detection mechanism is provided, and the detection mechanism includes an upper detection component and a lower detection component for detecting components on the upper and lower parts of the PCB board respectively;

[0006] The upper detection assembly includes an upper mold that can move up and down, and the bottom of the upper mold has a plurality of cavities that are adapted to the shape of the PCB board, and the cavity has a plurality of detection columns for detecting the PCB board;

[0007] The lower detection component includes a lower mold that can move up and down. A positioning block is provided on the upper part of the lower mold. The positioning block has a groove that matches the shape of the components at the bottom of the PCB board. The groove has a detection needle for detecting the components at the bottom of the PCB board.

[0008] Preferably, the conveyor line body includes two tracks with adjustable spacing, two transmission shafts respectively arranged at both ends of the tracks, and a driving motor that drives the transmission shaft to rotate, a transmission chain is arranged on each track, a sprocket is arranged on the transmission shaft, the sprockets on the two transmission shafts are connected by a transmission chain, a driving sprocket is arranged at the front end of one of the transmission shafts, and the output end of the driving motor is connected to the driving sprocket through a chain.

[0009] Preferably, the conveyor line body further comprises four stands, an auxiliary shaft and an adjusting motor, both ends of the track are provided with screw rods, both ends of the screw rods are respectively rotatably connected with the two stands, the two ends of one track are respectively fixed on the top of the two stands, and the other track is drivingly connected with the screw rod;

[0010] The two ends of the screw rod are rotatably connected to the two seats respectively, and the two ends of the screw rod are respectively provided with a driving sprocket and a bevel gear. The output end of the adjusting motor is connected to the driving sprocket through the driving motor. The two ends of the auxiliary shaft are provided with bevel gears, and the bevel gears at both ends of the auxiliary shaft are respectively meshed with the bevel gears at the ends of the screw rod.

[0011] Preferably, a plurality of position sensors are arranged on at least one track, and the plurality of position sensors are distributed along the conveying direction of the track.

[0012] Preferably, the upper detection assembly also includes a downward pressure cylinder, an upper fixed plate and a lower pressure plate, the lower pressure plate is located below the upper fixed plate and is connected to the upper fixed plate through a guide rod, the output end of the downward pressure cylinder passes through the upper fixed plate and is connected to the lower pressure plate, and the upper mold is fixed at the bottom of the lower pressure plate.

[0013] Preferably, the lower detection assembly also includes a lower fixed plate, an upper pressure plate, a cylinder fixing seat and a lifting cylinder, the lifting cylinder is vertically fixed on the cylinder fixing seat, the output end of the lifting cylinder passes through the lower fixed plate and is connected to the upper pressure plate, and the lower mold is fixed on the upper part of the upper pressure plate.

[0014] Preferably, a blocking mechanism is provided on one side of the lower detection assembly close to the incoming material direction, and the blocking mechanism comprises a vertically fixed blocking cylinder and a blocking rod connected to the output end of the blocking cylinder.

[0015] Preferably, one side of the lower fixing plate and the lower mold is provided with an avoidance groove for facilitating the passage of the blocking rod.

[0016] Compared with the prior art, the beneficial effects are:

[0017] In the utility model, after the PCB board is transmitted to the position of the detection mechanism through the conveyor line, the upper mold and the lower mold will move up and down, the PCB board will be clamped between the upper mold and the lower mold, the cavity at the bottom of the upper mold will contact the upper part of the PCB board, the detection column in the cavity will contact the components on the upper part of the PCB board to detect them, and at the same time, the components at the bottom of the PCB board will be embedded in the groove on the upper part of the lower mold, and the detection needle in the groove will contact the corresponding position of the component to detect it. After the detection is completed, the PCB board will continue to be transmitted backward by the conveyor line, and there is no need to manually load and unload and detect the PCB board, which effectively improves the detection efficiency of the PCB board and is suitable for the detection operation of the PCB board in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the outer box and the inner box in the utility model;

[0020] Figure 3 yes Figure 2 A magnified view of the structure at center A;

[0021] Figure 4 It is a structural schematic diagram of the door panel in the utility model;

[0022] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0023] In the figure, 1. conveyor line body; 11. track; 12. transmission chain; 13. stand; 14. screw rod; 15. transmission shaft; 16. auxiliary shaft; 17. bevel gear; 18. transmission motor; 19. adjustment motor; 2. upper detection assembly; 21. upper fixed plate; 22. lower pressure plate; 23. lower pressure cylinder; 24. connecting rod; 25. upper mold; 251. detection column; 3. lower detection assembly; 31. lower fixed plate; 32. upper pressure plate; 33. lower mold; 34. cylinder fixing seat; 35. lifting cylinder; 36. positioning block; 361. detection needle; 37. positioning column; 38. support column; 4. blocking mechanism; 41. blocking cylinder; 42. blocking rod; 5. position sensor; 6. bottom plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 and Figure 2 As shown, the preferred embodiment of the utility model proposes a conveyor line for PCB board detection, which is generally installed inside an oven and is used for conveying and detecting PCB boards in the oven, usually detecting the working condition of PCB boards in a high temperature environment. The conveyor line mainly includes a conveyor line body 1 and two detection mechanisms, which are distributed along the conveying direction of the conveyor line body 1. The detection mechanism is composed of an upper detection component 2 and a lower detection component 3, which are respectively used to detect the upper and bottom of the PCB board.

[0026] like Figure 2 As shown, the conveyor line body 1 is composed of two tracks 11, four seats 13, two transmission shafts 15, two screw rods 14, a transmission motor 18, an adjustment motor 19, an auxiliary shaft 16 and other components, wherein the four seats 13 are fixed on the bottom plate 6, and each two seats 13 form a group. A transmission shaft 15 and a screw rod 14 are arranged between each group of seats 13, and the transmission shaft 15 and the screw rod 14 are arranged in parallel, and the two ends thereof are respectively connected to the two seats 13 for rotation. The two ends of one track 11 are respectively fixed to the top of the two seats 13, and the other track 11 is connected to the two screw rods 14 for transmission, and is connected to the two transmission shafts 15 for rotation and interlacing. When the screw rod 14 rotates, it can drive the track 11 to move, thereby realizing the adjustment of the spacing between the two tracks 11.

[0027] Both ends of the transmission shaft 15 are rotatably connected to the stand 13 through bearings, and a driving sprocket is provided at the end and middle part of the two transmission shafts 15. The transmission shaft 15 is a prismatic structure, so the driving sprocket located in the middle part of the screw rod 14 is interlaced with the screw rod 14. The driving sprocket can slide along the axial direction of the transmission shaft 15, but when the transmission shaft 15 rotates, it will also drive the driving sprocket to rotate.

[0028] Each track 11 is provided with a transmission chain 12 for conveying PCB boards. The two ends of the transmission chain 12 are respectively meshed with the driving sprockets on the two transmission shafts 15, and the output end of the transmission motor 18 is also provided with a sprocket. The front end of one of the lead screws 14 is also provided with a driving sprocket, which is connected to the sprocket on the transmission motor 18 through a chain. When the transmission motor 18 rotates, it can drive the transmission shaft 15 to rotate, and then drive the transmission chain 12 to rotate, so as to convey the PCB boards.

[0029] A sprocket and a bevel gear 17 are respectively provided at the two ends of one of the screw rods 14, and a bevel gear 17 is also provided at one end of the other screw rod 14. A bevel gear 17 is respectively provided at both ends of the auxiliary shaft 16, and the bevel gears 17 at both ends of the auxiliary shaft 16 are respectively meshed with the bevel gears 17 at the ends of the two screw rods 14. A sprocket is also provided at the output end of the adjusting motor 19, and the sprocket is connected to the sprocket at the end of the screw rod 14. When the adjusting motor 19 rotates, it can drive one of the screw rods 14 to rotate, and with the cooperation of the auxiliary shaft 16 and the bevel gear 17, it drives the other screw rod 14 to rotate synchronously, and then drives the track 11 to move along the axial direction of the screw rod 14, so as to adjust the spacing between the two tracks 11.

[0030] The conveyor line can be different from the width of your PCB board, and the spacing between the two tracks 11 can be adjusted. Because it is chain-driven, it can work normally in a high temperature environment.

[0031] like Figure 1 , Figure 3 As shown, the upper detection component 2 is located above the conveyor line body 1, and is composed of a downward pressure cylinder 23, an upper fixed plate 21, a lower pressure plate 22, an upper mold 25 and other components, wherein the lower pressure plate 22 is located below the upper fixed plate 21 and is connected by a guide rod, the upper end of the guide rod is fixed on the upper fixed plate 21, and the lower end is fixed on the bottom plate 6, the lower pressure plate 22 and the guide rod are connected for upward and downward sliding, the output end of the downward pressure cylinder 23 is connected to the connecting rod 24, the lower end of the connecting rod 24 passes through the upper fixed plate 21 and is connected to the lower pressure plate 22, driving the lower pressure plate 22 to move downward. The upper mold 25 is fixed at the bottom of the lower pressure plate 22. A cavity is set at the bottom of the upper mold 25. The shape of the cavity is adapted to the shape of the PCB board. A plurality of detection columns 251 are set in the cavity. The position distribution of the detection columns 251 is consistent with the position distribution of the components on the upper part of the PCB board. The downward pressure cylinder 23 drives the upper mold 25 to move downward, and the upper part of the PCB board contacts the cavity. The detection columns 251 contact the components on the upper part of the PCB board and detect them.

[0032] like Figure 1 , Figure 4 As shown, the lower detection component 3 is located below the conveyor line body 1, and is composed of a lower fixed plate 31, an upper pressure plate 32, a cylinder fixing seat 34, a lifting cylinder 35, a lower mold 33 and other components, wherein the lifting cylinder 35 is vertically fixed on the cylinder fixing seat 34, the lower fixed plate 31 is located below the upper pressure plate 32, the output end of the lifting cylinder 35 passes through the lower fixed plate 31 and is connected to the upper pressure plate 32, a guide rod is provided at the bottom of the upper pressure plate 32, and the lower end of the guide rod is slidably connected to the bottom plate 6 up and down.

[0033] The lower mold 33 is fixed on the upper part of the lower pressure plate 22. A plurality of positioning blocks 36 are arranged on the lower mold 33. Each positioning block 36 has a groove, which is adapted to the shape of the components at the bottom of the PCB board. Each groove has a detection needle 361. When the lifting cylinder 35 drives the upper pressure plate 32 to move upward, the components at the bottom of the PCB board will be accommodated in the groove. At the same time, the detection needle 361 will contact the corresponding positions of each component on the PCB board to detect it.

[0034] A plurality of support rods are also provided on the upper mold 25 , and a positioning column 37 is provided at each diagonal position of the upper mold 25 . The support column 38 is used to support the PCB board, and the positioning column 37 is used to position the PCB board.

[0035] In order to detect the position of the PCB board, a plurality of position sensors 5 are arranged on one of the rails 11 . The plurality of position sensors 5 are distributed along the conveying direction of the rail 11 and are used to detect the moving position of the PCB board.

[0036] A blocking mechanism 4 is provided on the side of the lower detection assembly 3 close to the incoming material direction, which is used to block the PCB board from continuing to be transported backwards when the PCB board reaches the position of the detection mechanism. Figure 5 .

[0037] The blocking mechanism 4 is composed of a vertically fixed blocking cylinder 41 and a blocking rod 42 connected to the output end of the blocking cylinder 41. At the same time, an avoidance groove for the blocking rod 42 to pass through is opened on one side of the lower fixed plate 31 and the lower mold 33. The blocking cylinder 41 drives the blocking rod 42 to move upward through the avoidance groove and block and intercept the PCB board transmitted on the conveyor line so that the detection mechanism can detect the PCB board.

[0038] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A conveyor line for PCB board inspection, used for installation in an oven, comprising a conveyor line body (1), characterized in that: At least one detection mechanism is arranged on the conveyor line body (1), and the detection mechanism comprises an upper detection component (2) and a lower detection component (3) for respectively detecting components on the upper and lower parts of the PCB board; The upper detection component (2) comprises an upper mold (25) that can move up and down, the bottom of the upper mold (25) has a plurality of cavities that are adapted to the shape of the PCB board, and the cavities have a plurality of detection columns (251) for detecting the PCB board; The lower detection component (3) comprises a lower mold (33) that can move up and down, a positioning block (36) is arranged on the upper part of the lower mold (33), the positioning block (36) has a groove that matches the shape of the components at the bottom of the PCB board, and the groove has a detection needle (361) for detecting the components at the bottom of the PCB board.

2. A PCB board detection conveyor line according to claim 1, characterized in that: The conveyor line body (1) comprises two tracks (11) with adjustable spacing, two transmission shafts (15) respectively arranged at both ends of the tracks (11), and a driving motor for driving the transmission shaft (15) to rotate, each track (11) is provided with a transmission chain (12), the transmission shaft (15) is provided with a sprocket, the sprockets on the two transmission shafts (15) are connected through the transmission chain (12), a driving sprocket is arranged at the front end of one of the transmission shafts (15), and the output end of the driving motor is connected to the driving sprocket through a chain.

3. A PCB board detection conveyor line according to claim 2, characterized in that: The conveyor line body (1) also includes four stands (13), an auxiliary shaft (16) and an adjustment motor (19), and screw rods (14) are provided at both ends of the track (11), and the two ends of the screw rod (14) are respectively rotatably connected to the two stands (13), wherein the two ends of one track (11) are respectively fixed to the top of the two stands (13), and the other track (11) is transmission-connected to the screw rod (14); The two ends of the screw rod (14) are respectively rotatably connected to the two stands (13), and the two ends of the screw rod (14) are respectively provided with a driving sprocket and a bevel gear (17), the output end of the regulating motor (19) is connected to the driving sprocket through the driving motor, and the two ends of the auxiliary shaft (16) are both provided with a bevel gear (17), and the bevel gears (17) at the two ends of the auxiliary shaft (16) are respectively meshed with the bevel gears (17) at the ends of the screw rod (14).

4. A PCB board detection conveyor line according to claim 3, characterized in that: A plurality of position sensors (5) are arranged on at least one track (11), and the plurality of position sensors (5) are distributed along the conveying direction of the track (11).

5. A PCB board detection conveyor line according to claim 1, characterized in that: The upper detection assembly (2) also includes a downward pressure cylinder (23), an upper fixed plate (21) and a downward pressure plate (22); the downward pressure plate (22) is located below the upper fixed plate (21) and is connected to the upper fixed plate (21) via a guide rod; the output end of the downward pressure cylinder (23) passes through the upper fixed plate (21) and is connected to the downward pressure plate (22); and the upper mold (25) is fixed at the bottom of the downward pressure plate (22).

6. A PCB board detection conveyor line according to claim 1, characterized in that: The lower detection assembly (3) also includes a lower fixed plate (31), an upper pressure plate (32), a cylinder fixing seat (34) and a lifting cylinder (35), wherein the lifting cylinder (35) is vertically fixed on the cylinder fixing seat (34), and the output end of the lifting cylinder (35) passes through the lower fixed plate (31) and is connected to the upper pressure plate (32), and the lower mold (33) is fixed on the upper part of the upper pressure plate (32).

7. A PCB board detection conveyor line according to claim 6, characterized in that: A blocking mechanism (4) is provided on one side of the lower detection component (3) close to the incoming material direction, and the blocking mechanism (4) comprises a vertically fixed blocking cylinder (41) and a blocking rod (42) connected to the output end of the blocking cylinder (41).

8. A conveyor line for PCB board detection according to claim 7, characterized in that: One side of the lower fixing plate (31) and the lower mold (33) is provided with an avoidance groove for facilitating the passage of the blocking rod (42).

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