A screening device for circuit boards

Abstract

A screening device for circuit boards, comprising a workbench and a loading component, a conveying component, a detection component, a unloading component and a control system installed on the workbench, wherein the loading component, the conveying component, the detection component and the unloading component are all connected to the control system signal; the detection component comprises a mounting frame, a lifting rod, a pressing plate, a plurality of adjustment sliders and a detection needle; the detection needle is designed as an elastic telescopic structure, and a pressure sensor is arranged inside the needle, and the pressure sensor is connected to the control system signal. The utility model performs deviation detection on the drilling position of the circuit board by designing an automated detection component, which greatly improves the efficiency compared with the traditional manual screening, and the reliability of the screening is also greatly improved; the automatic loading and unloading of the loading component, the conveying component and the unloading component further improves the detection and screening efficiency of the circuit board, and also reduces the safety risks that may exist in manual operation; the utility model has strong practicality and strong promotion significance.

Description

Technical Field

[0001] The utility model relates to a circuit board processing device, in particular to a circuit board screening device. Background Art

[0002] A circuit board is also called a circuit board. It is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from electronic watches and calculators to computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, must use a circuit board to make electrical connections between the various components. The circuit board consists of an insulating base plate, connecting wires, and pads for assembling and welding electronic components. It has the dual functions of a conductive line and an insulating base plate.

[0003] In the production process of circuit boards, drilling holes is an extremely important processing step. In order to ensure the quality of the circuit boards, the holes on the circuit boards need to be inspected after drilling to avoid drilling deviation problems. Conventional drilling inspection methods are often carried out through manual inspection and screening, which is not only inefficient but also prone to errors. Utility Model Content

[0004] Based on this, it is necessary to provide a circuit board screening device to address the deficiencies in the prior art.

[0005] A screening device for circuit boards, comprising a workbench and a loading component, a conveying component, a detection component, a unloading component, and a control system installed on the workbench, wherein the loading component, the conveying component, the detection component, and the unloading component are all connected to the control system signal. The detection component comprises a mounting frame, a lifting rod, a pressing plate, a plurality of adjustment sliders, and a detection needle. The mounting frame stands on the workbench, the upper end of the lifting rod is mounted on the mounting frame and can be movably lifted and lowered, the pressing plate is mounted on the lower end of the lifting rod, and the bottom of the pressing plate is also provided with a first engaging groove, and a plurality of the adjustment sliders are all engaged and installed in the first engaging groove and can be adjusted to slide left and right, and the bottom of the adjustment slider is also provided with a second engaging groove, and a plurality of the detection needles are respectively engaged and installed in a plurality of the second engaging grooves and can be adjusted to slide forward and backward. The detection needle is designed as an elastic telescopic structure, and a pressure sensor is provided inside it, and the pressure sensor is connected to the control system signal.

[0006] Furthermore, the detection assembly further comprises a plurality of balancing slide bars, and the pressing plate is provided with a plurality of slide holes correspondingly. The balancing slide bars vertically pass through the slide holes, and the two ends thereof are respectively fixedly mounted on the workbench and the mounting frame.

[0007] Furthermore, the loading assembly and the unloading assembly both include a conveyor belt and a material grabber, and the workbench is provided with a mounting groove, the conveyor belt is installed in the mounting groove, and the material grabber is arranged above the conveyor belt.

[0008] Furthermore, the gripper comprises a sliding frame, a sliding plate, a lifting cylinder, a negative pressure suction plate and a plurality of auxiliary sliding rods. The sliding frame stands on a workbench, one end of which is located above the conveying assembly and the other end extends above the conveyor belt. The sliding plate is mounted on the sliding frame and can slide back and forth. The upper end of the lifting cylinder is mounted on the bottom of the sliding plate, the negative pressure suction plate is mounted on the lower end of the lifting cylinder, and the lower ends of the plurality of auxiliary sliding rods are respectively mounted on the top of the negative pressure suction plate, and the upper ends pass through the sliding plate upward.

[0009] Furthermore, the transmission assembly includes a translation outer frame and a bearing inner plate, and the workbench is also provided with a transmission slot. The translation outer frame is mounted in the transmission slot and can slide left and right, and the bearing inner plate is axially connected to the inner side of the translation outer frame and can rotate movably, and the bearing inner plate is also provided with a bearing slot.

[0010] Furthermore, the bearing inner plate is also provided with a plurality of telescopic limit blocks, and the plurality of telescopic limit blocks are respectively installed on the inner side of the bearing groove.

[0011] Furthermore, the circuit board screening device further comprises a board storage box, and the workbench is further provided with a board drop groove. The board drop groove is designed to be open at the top and one side, and its top opening is connected to the conveying groove, and its bottom is designed to be inclined downward. The board storage box is designed to be open at the top, and the board storage box is connected to the side opening of the board drop groove.

[0012] To sum up, the beneficial effects of the screening device for circuit boards of the utility model are: by designing an automated detection component to detect the deviation of the drilling position of the circuit board, the efficiency is greatly improved compared with the traditional manual screening, and the reliability of the screening is also greatly improved; the automatic loading and unloading of the loading component, the conveying component and the unloading component further improves the detection and screening efficiency of the circuit board, and also reduces the safety risks that may exist in manual operation; the utility model is highly practical and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a circuit board screening device of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0015] Figure 3 for Figure 2 The structural diagram of the workbench in the middle;

[0016] Figure 4 for Figure 2 Schematic diagram of the exploded structure of the loading assembly;

[0017] Figure 5 for Figure 2 Schematic diagram of the exploded structure of the transmission component;

[0018] Figure 6 for Figure 2 Schematic diagram of the decomposition structure of the detection components. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] like Figures 1 to 6 As shown, the utility model provides a circuit board screening device 100, which includes a workbench 10 and a loading component 20, a conveying component 30, a detection component 40, a unloading component 50, and a control system 60 installed on the workbench 10, and the loading component 20, the conveying component 30, the detection component 40 and the unloading component 50 are all connected to the control system 60 by signal.

[0021] The detection assembly 40 includes a mounting frame 41, a lifting rod 42, a pressing plate 43, a plurality of adjustment sliders 44 and a detection needle 45. The mounting frame 41 stands on the workbench 10, the upper end of the lifting rod 42 is mounted on the mounting frame 41 and can be movably lifted and lowered, the pressing plate 43 is mounted on the lower end of the lifting rod 42, the bottom of the pressing plate 43 is also provided with a first snap-fitting groove 431, a plurality of the adjustment sliders 44 are snap-fitted and mounted in the first snap-fitting groove 431 and can be adjusted to slide left and right, the bottom of the adjustment slider 44 is also provided with a second snap-fitting groove (not shown), a plurality of the detection needles 45 are snap-fitted and mounted in a plurality of the second snap-fitting grooves and can be adjusted to slide forward and backward. The detection needle 45 is designed as an elastic telescopic structure, and a pressure sensor (not shown) is provided inside it, and the pressure sensor is connected to the control system 60 by signal.

[0022] When it is necessary to detect and screen the drilling positions of the circuit board, it is only necessary to start the lifting rod 42 to drive the pressing plate 43 to press down, and the detection needle 45 below will be inserted into the hole on the circuit board from top to bottom. If there is an abnormal deviation in the hole on the circuit board, the detection needle 45 will press against the surface of the circuit board and elastically shrink, and then the pressure sensor will detect and report the deviation abnormality to the control system 60. The combined pressing plate 43, the adjustment slider 44 and the detection needle 45 structure can freely preset the number and position of the detection needle 45, so that it can correspond to the coordinates of the circuit board holes of different standards, which greatly expands the scope of use of the screening device.

[0023] The detection assembly 40 further includes a plurality of balancing slide bars 46, and the pressing plate 43 is provided with a plurality of sliding holes 432 correspondingly. The balancing slide bars 46 vertically pass through the sliding holes 432, and the two ends thereof are respectively fixedly mounted on the workbench 10 and the mounting frame 41. The vertically fixed balancing slide bars 46 can ensure that the detection pins 45 are synchronously vertically plugged in during the downward pressure detection, so as to avoid the problem that the detection pins 45 are deflected during the detection process, thereby affecting the detection screening results or even causing damage to the circuit board or the equipment.

[0024] The loading assembly 20 and the unloading assembly 50 both include a conveyor belt 21 and a gripper 22. The workbench 10 is provided with a mounting groove 11. The conveyor belt 21 is installed in the mounting groove 11, and the gripper 22 is arranged above the conveyor belt 21. The gripper 22 includes a sliding frame 221, a sliding plate 222, a lifting cylinder 223, a negative pressure suction plate 224 and a plurality of auxiliary sliding rods 225. The sliding frame 221 stands on the workbench 10, one end of which is located above the conveying assembly 30, and the other end extends above the conveyor belt 21. The sliding plate 222 is mounted on the sliding frame 221 and can slide forward and backward. The upper end of the lifting cylinder 223 is mounted on the bottom of the sliding plate 222, and the negative pressure suction plate 224 is mounted on the lower end of the lifting cylinder 223. The lower ends of the plurality of auxiliary sliding rods 225 are respectively mounted on the top of the negative pressure suction plate 224, and the upper ends pass through the sliding plate 222 upward. When loading and unloading, the circuit board is grabbed from the conveyor belt 21 or the conveying assembly 30 by the negative pressure suction plate 224 on the gripper 22 and driven up by the lifting cylinder 223, and then the circuit board is transferred to the target position by the sliding plate 222 and put down.

[0025] The conveying assembly 30 includes a translation outer frame 31 and a bearing inner plate 32, and a conveying slot 12 is also provided on the workbench 10. The translation outer frame 31 is mounted in the conveying slot 12 and can slide left and right, and the bearing inner plate 32 is axially connected to the inner side of the translation outer frame 31 and can rotate movably, and a bearing slot 321 is also provided on the bearing inner plate 32. A plurality of telescopic limit blocks 322 are also provided on the bearing inner plate 32, and the plurality of telescopic limit blocks 322 are respectively installed on the inner side of the bearing slot 321. Before the detection and screening is performed, the circuit board can be engaged in the bearing slot 321 by the loading assembly 20, and then the bearing inner plate 32 and the circuit board are driven by the translation outer frame 31 to the bottom of the detection assembly 40 for detection and screening. After the detection and screening is completed, the circuit board is continuously transferred to the unloading assembly 50 to unload or select the defective board.

[0026] The circuit board screening device 100 further includes a board storage box 70, and the workbench 10 is further provided with a board drop groove 13. The board drop groove 13 is designed to be open at the top and one side, and the top opening is connected to the conveying groove 12, and the bottom is designed to be inclined downward. The board storage box 70 is designed to be open at the top, and the board storage box 70 is connected to the side opening of the board drop groove 13. When a bad board with a misaligned drilling hole is detected and screened, it is only necessary to transfer the circuit board to the top of the board drop groove 13 through the conveying assembly 30, and then rotate the bearing inner plate 32 and release the limit of the circuit board, and the circuit board will automatically fall and slide into the board storage box 70.

[0027] To sum up, the beneficial effects of the circuit board screening device 100 of the utility model are: by designing an automated detection component 40 to detect the deviation of the drilling position of the circuit board, the efficiency is greatly improved compared with the traditional manual screening, and the reliability of the screening is also greatly improved; the automatic loading and unloading of the loading component 20, the conveying component 30 and the unloading component 50 further improves the detection and screening efficiency of the circuit board, and also reduces the safety risks that may exist in manual operation; the utility model is highly practical and has a strong promotion significance.

[0028] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A circuit board screening device, characterized in that: It includes a workbench and a loading component, a conveying component, a detection component, a unloading component and a control system installed on the workbench, and the loading component, the conveying component, the detection component and the unloading component are all connected with the control system signal; the detection component includes a mounting frame, a lifting rod, a pressing plate, a plurality of adjusting sliders and a detection needle; the mounting frame stands on the workbench, the upper end of the lifting rod is installed on the mounting frame and can be movably lifted and lowered, the pressing plate is installed at the lower end of the lifting rod, and the bottom of the pressing plate is also provided with a first engaging groove, and a plurality of adjusting sliders are all engaged and installed in the first engaging groove and can be adjusted to slide left and right, and the bottom of the adjusting slider is also provided with a second engaging groove, and a plurality of detection needles are respectively engaged and installed in a plurality of second engaging grooves and can be adjusted to slide forward and backward; the detection needle is designed as an elastic telescopic structure, and a pressure sensor is provided inside it, and the pressure sensor is connected with the control system signal.

2. The circuit board screening device according to claim 1, characterized in that: The detection assembly also includes a plurality of balancing slide bars, and the pressing plate is provided with a plurality of slide holes correspondingly; the balancing slide bars vertically pass through the slide holes, and the two ends thereof are respectively fixedly mounted on the workbench and the mounting frame.

3. The circuit board screening device according to claim 1, characterized in that: The loading assembly and the unloading assembly both include a conveyor belt and a material grabber. The workbench is provided with a mounting groove. The conveyor belt is installed in the mounting groove, and the material grabber is arranged above the conveyor belt.

4. The circuit board screening device according to claim 3, characterized in that: The grabber includes a sliding frame, a sliding plate, a lifting cylinder, a negative pressure suction plate and a number of auxiliary sliding rods; the sliding frame stands on a workbench, one end of which is located above the transmission component, and the other end extends above the conveyor belt. The sliding plate is mounted on the sliding frame and can slide back and forth. The upper end of the lifting cylinder is mounted on the bottom of the sliding plate, and the negative pressure suction plate is mounted on the lower end of the lifting cylinder. The lower ends of the auxiliary sliding rods are respectively mounted on the top of the negative pressure suction plate, and the upper ends pass through the sliding plate upward.

5. The circuit board screening device according to claim 1, characterized in that: The conveying assembly includes a translation outer frame and a bearing inner plate, and a conveying groove is also provided on the workbench; the translation outer frame is snap-fitted into the conveying groove and can slide left and right, the bearing inner plate is axially connected to the inner side of the translation outer frame and can rotate movably, and a bearing groove is also provided on the bearing inner plate.

6. The circuit board screening device according to claim 5, characterized in that: The bearing inner plate is also provided with a plurality of telescopic limit blocks, and the plurality of telescopic limit blocks are respectively installed on the inner side of the bearing groove.

7. The circuit board screening device according to claim 1, characterized in that: The circuit board screening device also includes a board storage box, and the workbench is also provided with a board drop groove; the board drop groove is designed to be open at the top and one side, and its top opening is connected to the conveying groove, and the bottom is designed to be inclined downward; the board storage box is designed to be open at the top, and the board storage box is connected to the side opening of the board drop groove.

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