Detection system for circuit board production

Abstract

The invention discloses a detection system for circuit board production, which comprises a first outer shell, a driving shaft, a synchronous belt and a gear carrier, and is characterized in that a second outer shell is arranged on one side of the first outer shell, and an inner shell is arranged between the first outer shell and the second outer shell; according to the coffee bean crushing device, the large-diameter crushing roller is matched with the two first grinding plates so that coffee beans can be rapidly cut into large-particle coarse coffee bean materials, the positions of the crushing roller and each first grinding plate are matched with the two sets of spring rods so that automatic position adjustment can be conducted within a small range, and therefore gaps between the first grinding plates and the crushing roller can be automatically and finely adjusted; the grinding roller is matched with the fixedly arranged second grinding plate, the coarse materials can be ground more finely, the pre-ground coarse materials can improve the fine grinding efficiency, meanwhile, ground coffee powder is pushed and discharged through the rotating pushing rod, and the overall processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to production detection systems, and in particular to a detection system used for circuit board production. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. With the development of technology, the integration of circuit boards is higher, and usually a fully automatic production method is adopted. In order to ensure the production quality of circuit boards, monitoring is required after production, so it is necessary to use a detection system for circuit board production.

[0003] At present, when testing circuit boards, conveyor belts are usually used to transport the circuit boards, and image scanning and testing of components on the surface of the circuit boards are performed during transportation. With the improvement of the degree of integration, some circuit boards will have a large number of components integrated on both sides, and the traditional testing device lacks a flipping mechanism. Therefore, manual flipping of the circuit board is required during the testing process, which reduces the processing efficiency and is inconvenient in use. In addition, some flipping mechanisms are used to clamp the two ends of the circuit board for flipping, and the pressure can easily cause the circuit board to bend, affecting the production quality of the circuit board. Summary of the invention

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a detection system for circuit board production that lacks a flipping mechanism, so that only one side of the circuit board can be scanned and processed in a single transportation, and the existing flipping mechanism easily causes the circuit board to bend, which has disadvantages when used.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A detection system for circuit board production, comprising a base frame, a mounting frame and a lifting frame, wherein a conveyor belt is installed on the base frame, a suspension is installed at the middle of the top of the base frame, and a CCD camera detection module is installed at the top of the suspension; Furthermore, two side grooves are symmetrically arranged at both ends of the base frame, and two guide rails are installed at both ends of each side groove; a slide is arranged inside each side groove, and two guide grooves are arranged at both ends of each slide, and each guide groove is connected to a guide rail; Furthermore, a group of first slide rails is provided between each of the side grooves and the conveyor belt, and each of the first slide rails is symmetrically provided with two, and each group of first slide rails is installed on the top of the bottom frame; a balancing slider is installed inside each of the first slide rails, and a first return spring is installed between each balancing slider and the inner wall of the first slide rail; Furthermore, the mounting frames are symmetrically provided with two mounting frames, and the two mounting frames are respectively provided above the two slide frames; the two ends of the bottom of each mounting frame are respectively slidably connected with the two second slide rails, and each second slide rail is installed on the top of the slide frame; Furthermore, a through slot is provided in the middle of each mounting bracket, and a guide rod is installed at one end of each mounting bracket close to the conveyor belt, and a second adjusting screw rod is installed at the other end of the mounting bracket close to the conveyor belt; Furthermore, the lifting frames are symmetrically provided with two, and each lifting frame is slidably connected to a through slot, and each through slot is connected to a guide rod and a second adjusting screw rod; Furthermore, each lifting frame is equipped with an adapter frame at one end close to the conveyor belt, and a pressure block is installed at the bottom of each adapter frame; a cushion block is installed at the bottom of each pressure block, and a pad is installed at one end of each cushion block close to the conveyor belt.

[0006] Furthermore, two sets of guide frames are installed at the top two ends of the bottom frame, and each set of guide frames is symmetrically provided with two Furthermore, two first control motors are symmetrically installed inside the base frame, and each first control motor is symmetrically provided with two transmission shafts, and the transmission shaft of each first control motor is connected to a first adjusting screw rod; each of the first adjusting screw rods is threadedly connected to a slide.

[0007] Furthermore, an adjusting cylinder is installed at the top end of each of the second slide rails, and the extended end of each adjusting cylinder is connected to a mounting frame, and the adjusting cylinder, the second slide rail and the mounting frame form a sliding structure.

[0008] Furthermore, a second control motor is installed on the top of each mounting bracket, and the output shaft of each second control motor is connected to a second adjusting screw rod; Furthermore, the second adjusting screw rod and the lifting frame are connected in a threaded manner, and the lifting frame and the guide rod are connected in a sliding manner. At the same time, the second adjusting screw rod, the guide rod and the lifting frame constitute a lifting structure.

[0009] Furthermore, the lifting frame is connected to the through slot in a sliding manner, and a steering motor is installed at one end of each lifting frame away from the conveyor belt; the output shaft of each steering motor is connected to an adapter frame, and the adapter frame and the lifting frame are connected in a rotating manner.

[0010] Furthermore, an electromagnetic switch module is installed on the top of each pressing block, and the pressing block is connected to the cushion block by sliding connection. At the same time, two spring rods are symmetrically connected between each pressing block and the cushion block.

[0011] Furthermore, the connection between the cushion block and the cushion plate is a rotational connection, and a plurality of limit grooves are provided at equal intervals at the connection between each cushion block and the cushion plate; Furthermore, a plurality of pressing blocks are arranged at equal intervals on the inner wall of each pressing block, and a spring pressing plate is installed at the bottom of each pressing block, and each pressing block is respectively distributed corresponding to a limiting groove.

[0012] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that: 1. In the present invention, a pressing block, a cushion block and a cushion plate are provided. In the initial state, a certain gap is maintained between the pressing block and the cushion block, and an electromagnetic switch module is installed on the pressing block. When the electromagnetic switch module is started, the magnetic adsorption cushion block is lifted up, so that the cushion plate cooperates with the pressing block to clamp the two ends of the circuit board. Then, the lifting frame is driven to move upward as a whole through the second adjusting screw rod, and then the steering motor is started to drive the adapter frame to flip over as a whole. Since there will be no wiring at the edge of the circuit board, the way of clamping the edge of the circuit board will not cause destructive effects on the circuit board, and will not cause the circuit board to bend during the flipping and clamping process, thereby improving the convenience of use.

[0013] 2. In the present invention, a slide and a mounting frame are provided. The slide can largely adjust the distance between the two mounting frames under the control of the first control motor to accommodate circuit boards of different widths. The two mounting frames can slightly adjust the distance between the two mounting frames under the action of the adjusting cylinder, thereby improving the accuracy of the device when in use.

[0014] 3. In the present invention, a pad, a limit groove, a pressure block and a spring pressure plate are provided. In the initial state, the pad naturally flips downward under the action of gravity, and the maximum flipping angle of the pad is 5°. Therefore, while maintaining a sufficient distance between the pad and the conveyor belt, the space between the pad and the bottom edge of the pressure block is larger. Because no matter it is a single-sided circuit board or a double-sided circuit board, when the circuit board is placed flat on the top of the conveyor belt, a certain gap will be maintained between the PCB board and the conveyor belt. The inclined pad is easier to insert into the gap between the PCB board and the conveyor belt. When the electromagnetic switch module is started, the spring pressure plate at the bottom of the pressure block will first contact the pad during the upward movement of the pad, and squeeze the connection between the pad and the pressure block, so that the pad is flipped 5° online to return to a horizontal state. Then the horizontal pad cooperates with the pressure block to clamp the PCB board to complete the clamping, thereby improving the convenience of use.

[0015] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 The present invention Figure 1 Bottom view of Figure 3 It is a rear view of 1 of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the bottom frame in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the first control motor in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the slide in the present invention; Figure 7 The present invention Figure 6 Bottom view of Figure 8 is a planar side view of the slide in the present invention; Fig. 9 The present invention is Figure 7 Cross-section in the AA direction; Fig.10 The present invention Figure 3 The enlarged view of point B in the figure; Fig.11 The present invention Fig. 9 The enlarged view of point C in the figure; Fig.12 It is a schematic diagram of the workflow of the present invention.

[0017] The reference numerals are as follows: 1. Base frame, 2. Conveyor belt, 3. Guide frame, 4. Suspension, 5. CCD camera detection module, 6. Side groove, 7. Guide rail, 8. First control motor, 9. First adjusting screw rod, 10. First slide rail, 11. Balance slider, 12. First return spring, 13. Slide, 14. Guide groove, 15. Mounting frame, 16. Second slide rail, 17. Adjustment cylinder, 18. Through groove, 19. Guide rod, 20. Second control motor, 21. Second adjusting screw rod, 22. Lifting frame, 23. Steering motor, 24. Adapter frame, 25. Pressing block, 26. Electromagnetic switch module, 27. Pad, 28. Spring rod, 29. Pad, 30. Limiting groove, 31. Pressing block, 32. Spring pressure plate. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 and Fig.10As shown, it includes a base frame 1, a mounting frame 15 and a lifting frame 22, a conveyor belt 2 is installed on the base frame 1, and a suspension 4 is installed in the middle of the top of the base frame 1, and a CCD camera detection module 5 is installed on the top of the suspension 4; two side grooves 6 are symmetrically provided at both ends of the base frame 1, and two guide rails 7 are installed at both ends of each side groove 6; a slide 13 is provided inside each side groove 6, and two guide grooves 14 are provided at both ends of each slide 13, and each guide groove 14 is connected to a guide rail 7; a group of first slide rails 10 are provided between each side groove 6 and the conveyor belt 2, and each first slide rail 10 is symmetrically provided with two, and each group of first slide rails 10 is installed at the top of the base frame 1; a balancing slider 11 is installed inside each first slide rail 10, and a first return spring 12 is installed between each balancing slider 11 and the inner wall of the first slide rail 10; the mounting frame 15 is symmetrically provided with two, and the two mounting frames 15 are respectively arranged above the two slides 13; the two ends of the bottom of each of the mounting frames 15 are slidably connected with the two second slide rails 16, and each of the second slide rails 16 is installed on the top of the slide 13; a through slot 18 is opened in the middle of each of the mounting frames 15, and a guide rod 19 is installed at one end of each mounting frame 15 close to the conveyor belt 2, and a second adjusting screw rod 21 is installed at the other end of the mounting frame 15 close to the conveyor belt 2; the lifting frames 22 are symmetrically provided with two, and each lifting frame 22 is slidably connected with a through slot 18, and each through slot 18 is connected with a guide rod 19 and a second adjusting screw rod 21; an adapter frame 24 is installed at one end of each of the lifting frames 22 close to the conveyor belt 2, and a pressure block 25 is installed at the bottom of each of the adapter frames 24; a cushion block 27 is installed at the bottom of each of the pressure blocks 25, and a pad 29 is installed at one end of each cushion block 27 close to the conveyor belt 2.

[0021] More specifically, the conveyor belt 2 passes directly under the suspension 4, and the circuit board to be tested is transported in one direction by the conveyor belt 2.

[0022] As a further explanation of this embodiment, when the circuit board passes directly under the suspension 4, the CCD camera detection module 5 scans the image of the passing circuit board, and analyzes the image in conjunction with AI to determine whether the current component welding is correct.

[0023] Please refer to Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, two groups of guide frames 3 are respectively installed at the top ends of the base frame 1, and each group of guide frames 3 is symmetrically provided with two first control motors 8. The interior of the base frame 1 is symmetrically installed with two first control motors 8, and each first control motor 8 is symmetrically provided with two transmission shafts, and at the same time, the transmission shaft of each first control motor 8 is connected to a first adjusting screw rod 9; each of the first adjusting screw rods 9 is threadedly connected to a slide 13.

[0024] More specifically, the first control motor 8 is a dual-axis motor, and the first control motor 8 drives the two first adjusting screw rods 9 to rotate synchronously in opposite directions at the same time.

[0025] As a further explanation of this embodiment, the first adjusting screw rod 9 drives the slide 13 to slide horizontally, so that the distance between the two mounting frames 15 can be adjusted to a large extent to accommodate circuit boards of different widths.

[0026] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in this embodiment, an adjusting cylinder 17 is installed at the top end of the second slide rail 16, and the extended end of each adjusting cylinder 17 is connected to a mounting frame 15. At the same time, the adjusting cylinder 17, the second slide rail 16 and the mounting frame 15 form a sliding structure.

[0027] More specifically, the mounting frame 15 is driven to slide along the second slide rail 16 by adjusting the cylinder 17 .

[0028] As a further illustration of this embodiment, the spacing between the two mounting brackets 15 is fine-tuned by adjusting the cylinder 17 .

[0029] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in this embodiment, a second control motor 20 is installed at the top of each mounting frame 15, and the output shaft of each second control motor 20 is connected to a second adjusting screw 21; the second adjusting screw 21 is connected to the lifting frame 22 by a threaded connection, and the lifting frame 22 is connected to the guide rod 19 by a sliding connection, and the second adjusting screw 21, the guide rod 19 and the lifting frame 22 constitute a lifting structure.

[0030] More specifically, the second control motor 20 drives the second adjusting screw rod 21 to rotate.

[0031] As a further explanation of this embodiment, the lifting frame 22 is driven by the second adjusting screw rod 21 to slide longitudinally along the guide rod 19 to ensure that the circuit board has sufficient rotation space.

[0032] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in this embodiment, the lifting frame 22 is connected to the through slot 18 in a sliding manner, and a steering motor 23 is installed at one end of each lifting frame 22 away from the conveyor belt 2; the output shaft of each steering motor 23 is connected to an adapter frame 24, and the adapter frame 24 is connected to the lifting frame 22 in a rotating manner.

[0033] More specifically, the entire adapter frame 24 is turned over by driving the steering motor 23 .

[0034] As a further illustration of this embodiment, the two adapter frames 24 are started synchronously, and the two adapter frames 24 drive the clamped circuit board to be turned synchronously, so as to facilitate the detection of both sides of the circuit board.

[0035] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in this embodiment, an electromagnetic switch module 26 is installed on the top of each pressing block 25, and the connection between the pressing block 25 and the cushion block 27 is a sliding connection. At the same time, two spring rods 28 are symmetrically connected between each pressing block 25 and the cushion block 27.

[0036] Specifically, the pressing block 25 and the cushion block 27 are both made of aluminum alloy, and an iron block is installed on the top of the cushion block 27. When the electromagnetic switch module 26 is started, the pressing block 25 will be magnetically attracted to move upward as a whole.

[0037] As a further explanation of this embodiment, when the electromagnetic switch module 26 is closed, the pressing block 25 is pushed downward and reset by the spring rod 28 .

[0038] Please refer to Fig.11 As shown, in the present embodiment, the connection mode between the cushion block 27 and the pad plate 29 is a rotational connection, and a plurality of limit grooves 30 are provided at equal intervals at the connection between each cushion block 27 and the pad plate 29; a plurality of pressure blocks 31 are provided at equal intervals on the inner wall of each pressure block 25, and a spring pressure plate 32 is installed at the bottom of each pressure block 31, and each pressure block 31 is respectively distributed corresponding to a limit groove 30.

[0039] Specifically, the maximum flip angle between the pad 29 and the pad block 27 is 5°, and a layer of silicone is pasted on the top of the pad 29 to increase friction and have a certain shock-absorbing effect.

[0040] As a further explanation of this embodiment, when the pad 27 moves upward, the spring pressure plate 32 will first contact the pad 29, and then drive the pad 29 to flip upward, so that the pad 29 returns to a horizontal state, and finally the pad 29 cooperates with the pressure block 25 to clamp the edge of the PCB board.

[0041] The working principle of the present invention is as follows: when in use, firstly connect the external power supply, start the conveyor belt 2, and the circuit boards that need to be inspected follow the conveyor belt 2 for unidirectional transportation in turn. When the circuit board passes between the two guide frames 3, the direction of the circuit board is guided by the guide frame 3. When the circuit board moves to the bottom of the CCD camera detection module 5, the conveyor belt 2 is automatically closed. Then the CCD camera detection module 5 takes a picture of the circuit board below, and analyzes the image through AI to perform quality analysis on the current circuit board. When it is necessary to inspect the back side of the circuit board, firstly start the four regulating cylinders 17 at the same time, and push the two mounting frames 15 slowly close to the circuit board respectively. Synchronously, when the ends of the two pads 29 move to below the edge of the PCB, close the regulating cylinder 17, and then start the two electromagnetic switch modules 26 at the same time to adsorb at the same time. The two pads 27 begin to move up. During this process, the spring pressure plate 32 first contacts the pad 29, and then drives the pad 29 to flip upward until it returns to a horizontal state. Then the spring pressure plate 32 begins to shrink until the pressure block 31 enters the corresponding limit groove 30. At the same time, after the pad 27 cooperates with the pad 29 to clamp the edge of the PCB board, the two second control motors 20 are started at the same time to drive the two second adjusting screws 21 to start rotating, and then the two lifting frames 22 are synchronously driven to start moving up. At this time, the circuit board moves up synchronously with the lifting frames 22, and then the two steering motors 23 are started at the same time to drive the two lifting frames 22 and the circuit board to flip 180°. Then, the back side of the circuit board can be detected and analyzed by the CCD camera detection module 5. After the detection is completed, the lifting frame 22 is reset and the circuit board is placed back on the conveyor belt 2.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A detection system for circuit board production, characterized in that: It comprises a base frame (1), a mounting frame (15) and a lifting frame (22), wherein a conveyor belt (2) is mounted on the base frame (1), a suspension frame (4) is mounted at the middle of the top end of the base frame (1), and a CCD camera detection module (5) is mounted at the top of the suspension frame (4); Two side grooves (6) are symmetrically arranged at both ends of the base frame (1), and two guide rails (7) are installed at both ends of each side groove (6); a slide frame (13) is arranged inside each side groove (6), and two guide grooves (14) are arranged at both ends of each slide frame (13), and each guide groove (14) is connected to a guide rail (7); A set of first slide rails (10) is provided between each of the side grooves (6) and the conveyor belt (2), and each of the first slide rails (10) is symmetrically provided with two, and each set of first slide rails (10) is installed on the top of the bottom frame (1); a balancing slider (11) is installed inside each of the first slide rails (10), and a first return spring (12) is installed between each balancing slider (11) and the inner wall of the first slide rail (10); Two mounting frames (15) are symmetrically provided, and the two mounting frames (15) are respectively provided above the two slide frames (13); the two ends of the bottom of each mounting frame (15) are respectively slidably connected to the two second slide rails (16), and each second slide rail (16) is installed on the top of the slide frame (13); A through slot (18) is provided in the middle of each mounting frame (15), and a guide rod (19) is installed at one end of each mounting frame (15) close to the conveyor belt (2), and a second adjusting screw rod (21) is installed at the other end of each mounting frame (15) close to the conveyor belt (2); The lifting frames (22) are symmetrically provided with two of them, and each lifting frame (22) is slidably connected to a through slot (18), and each through slot (18) is connected to a guide rod (19) and a second adjusting screw rod (21). Each lifting frame (22) is provided with an adapter frame (24) at one end close to the conveyor belt (2), and a pressing block (25) is provided at the bottom of each adapter frame (24); a cushion block (27) is provided at the bottom of each pressing block (25), and a pad (29) is provided at one end of each cushion block (27) close to the conveyor belt (2).

2. The detection system for circuit board production according to claim 1, characterized in that: Two sets of guide frames (3) are respectively installed at the top two ends of the bottom frame (1), and each set of guide frames (3) is symmetrically provided with two Two first control motors (8) are symmetrically mounted inside the base frame (1), and each first control motor (8) is symmetrically provided with two transmission shafts, and each transmission shaft of the first control motor (8) is connected to a first adjustment screw rod (9); each first adjustment screw rod (9) is threadedly connected to a slide (13).

3. The detection system for circuit board production according to claim 1, characterized in that: An adjusting cylinder (17) is installed at the top end of each of the second slide rails (16), and the extended end of each adjusting cylinder (17) is connected to a mounting frame (15), and the adjusting cylinder (17), the second slide rail (16) and the mounting frame (15) form a sliding structure.

4. The detection system for circuit board production according to claim 1, characterized in that: A second control motor (20) is mounted on the top of each mounting frame (15), and the output shaft of each second control motor (20) is connected to a second adjusting screw rod (21); The second adjusting screw rod (21) and the lifting frame (22) are connected in a threaded manner, and the lifting frame (22) and the guide rod (19) are connected in a sliding manner. The second adjusting screw rod (21), the guide rod (19) and the lifting frame (22) form a lifting structure.

5. The detection system for circuit board production according to claim 1, characterized in that: The lifting frame (22) is connected to the through slot (18) in a sliding manner, and a steering motor (23) is installed at one end of each lifting frame (22) away from the conveyor belt (2); the output shaft of each steering motor (23) is connected to an adapter frame (24), and the adapter frame (24) is connected to the lifting frame (22) in a rotating manner.

6. The detection system for circuit board production according to claim 1, characterized in that: An electromagnetic switch module (26) is installed on the top of each pressing block (25), and the pressing block (25) and the cushion block (27) are connected in a sliding manner. At the same time, two spring rods (28) are symmetrically connected between each pressing block (25) and the cushion block (27).

7. The detection system for circuit board production according to claim 1, characterized in that: The pad (27) and the pad plate (29) are connected in a rotational manner, and a plurality of limit grooves (30) are provided at equal intervals at the connection between each pad (27) and the pad plate (29); A plurality of pressing blocks (31) are arranged at equal intervals on the inner wall of each pressing block (25), and a spring pressure plate (32) is installed at the bottom of each pressing block (31). Meanwhile, each pressing block (31) is distributed correspondingly to a limiting groove (30).

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