ICT online test work station

Abstract

The invention provides an ICT on-line test work station which comprises a machine table, a test instrument is arranged in the machine table, an adjustable conveying device is arranged on the machine table and comprises two sets of bottom plates, a conveying belt assembly is arranged between the bottom plates in a crossing mode, jacking devices are arranged on the lower portions of the bottom plates, and the jacking devices drive the bottom plates to move up and down. Supporting convex edges are arranged on the opposite sides of the conveying belt assembly, and the supporting convex edges are used for supporting a to-be-tested PCB; according to the work station, the liftable conveying line is arranged, the PCBs on the conveying line can be aligned to the detection jig by lifting the PCBs, the downward pressing stroke can be controlled through downward pressing of the electric cylinder, the floating jig and the jig box are arranged, internal connection or overhaul can be adjusted in a drawing mode, and the work station is convenient to use and high in practicability. And the jig box is driven to be adjusted up and down through horizontal pushing to control connection and separation of the jig box and the detection instrument, so that real-time online detection is realized.

Description

Technical Field

[0001] The present invention relates to the field of designing test equipment, and in particular to an ICT test station. Background Art

[0002] ICT Test mainly detects the open circuit, short circuit and welding condition of all parts of PCBA by contacting the test points of PCB layout with test probes. It can be divided into open circuit test, short circuit test, resistance test, capacitance test, diode test, transistor test, field effect tube test, IC pin test (testjetconnect check BasicScan Bist) and other common and special components such as missing installation, wrong installation, parameter value deviation, solder joint welding, circuit board open and short circuit faults, and accurately tells the user which component or open and short circuit fault is located at which point through printer or screen display. In the prior art, such as the utility model patent with patent announcement number: CN 203054135 U, which discloses an ICT online tester with a defective product filter, although it is set with a streamline to realize online testing, it does not explain how to realize real-time downward pressure in the fixture box to plug and merge the terminals, and because the number of ICT detection pins is relatively dense, it is difficult to realize real-time plug and separate, and the structure of continuous detection is not easy to realize. In fact, it is all stopped and manually assisted on the side, which is inefficient. CN 209559940 U disclosed an ICT online test fixture, which has two sets of upper and lower springs, but has poor stability and is prone to deviation, resulting in broken needles. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes an ICT online testing station, including a machine platform, a testing instrument is arranged inside the machine platform, and a

[0004] An adjustable conveying device, the adjustable conveying device comprises two sets of bottom plates, a conveyor belt assembly is arranged across the bottom plates, a lifting device is arranged at the lower part of the bottom plates, and the lifting device drives the bottom plates to move up and down; a supporting convex edge is arranged on the opposite side of the conveyor belt assembly, and the supporting convex edge is used to support the PCB board to be tested;

[0005] A floating fixture is provided at the lower part of the conveyor belt assembly, a first probe board is provided on the machine platform at the lower part of the floating fixture, a plurality of first plug-in terminals are provided on the first probe board, and the first plug-in terminals are electrically connected to the test instrument; a horizontal pushing device is connected to the floating fixture;

[0006] The floating fixture comprises a detection box, a second plug-in terminal corresponding to the first plug-in terminal is provided at the bottom of the detection box, and the horizontal pushing device pushes the floating fixture downward so that the first plug-in terminal is plugged with the second plug-in terminal;

[0007] The floating fixture comprises a detection box, a second plug-in terminal corresponding to the first plug-in terminal is provided at the bottom of the detection box, a plurality of detection pins are provided at the top of the detection box, the detection pins are electrically connected with the corresponding second plug-in terminals in the detection box, a carrier board is elastically connected to the upper part of the detection box, the carrier board is densely covered with jacks, and the detection probes correspond to the jacks;

[0008] A pressing device is provided above the conveyor belt, and a pressing plate is connected to the output end of the pressing device. The pressing device drives the pressing plate to press down on the PCB to be tested, and presses the carrier plate downward so that the pins pass through the through holes and align with the points of the PCB to be tested.

[0009] Preferably, the lifting device is a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0010] Preferably, a plurality of first guide posts are provided on the carrier plate and the top of the detection box.

[0011] Preferably, a plurality of springs are provided between the carrier plate and the top of the test box.

[0012] Preferably, a plurality of second guide posts are provided on the top of the carrier plate.

[0013] Preferably, the horizontal pushing device also includes two groups of guide assemblies fixed on the machine platform, the guide assemblies including a vertical plate, a long groove is provided on one side of the vertical plate, and a vertical slider is vertically slidably connected to the other side, a first guide plate is inserted in the long groove, an arc-shaped groove with an end inclined upward is provided on the first guide plate, the ends of the first guide plates of the guide assemblies on both sides are connected by a connecting plate, and a horizontal cylinder is connected to the connecting plate; a second guide plate is fixed on the vertical plate, a plurality of vertical grooves are provided on the second guide plate, a bottom section of the arc-shaped groove corresponds to the vertical groove, a plurality of rollers are provided on the vertical slider, the rollers correspond to the arc-shaped groove and the vertical groove and extend into the arc-shaped groove and the vertical groove at the same time.

[0014] Preferably, the vertical slide block is connected to the first vertical plate via a slide rail and slide groove mechanism.

[0015] Preferably, a pulling groove is provided on the vertical sliding block, and a protrusion is provided on the bottom of the detection box, and the protrusion extends into the pulling groove.

[0016] Preferably, the pressing device is an electric cylinder.

[0017] Preferably, the conveying assembly includes two groups of fixed conveying belts and a movable conveying belt, a section of the fixed conveying belt and the movable conveying belt is pressed on the supporting convex edge, and connecting blocks are fixed at both ends of the bottom of the movable conveying belt, and the connecting blocks are respectively connected to two groups of screw modules, and the screw modules drive the movable conveying belt to approach or move away from the fixed conveying belt.

[0018] The beneficial effects of the ICT online testing station proposed in this solution are as follows: this station is equipped with a liftable conveyor line. By lifting the PCB board, the PCB board on the conveyor line can be aligned with the detection fixture, and the downward pressure stroke can be controlled by the electric cylinder. A floating fixture is provided, and the fixture box can be pulled out to adjust the internal connection or maintenance, and the fixture box can be adjusted up and down by horizontal pushing to control the connection and separation of the fixture box and the detection instrument, thereby realizing real-time online detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 is a schematic diagram of an adjustable conveying device of the present invention;

[0022] Figure 3 is a schematic diagram of a floating fixture of the present invention;

[0023] Figure 4 It is a schematic diagram of the assembly of the floating fixture and the adjustable conveying device of the present invention;

[0024] Figure 5 It is a schematic diagram of the interior of the floating fixture of the present invention;

[0025] Figure 6 It is a side schematic diagram of the floating fixture of the present invention;

[0026] Figure 7 It is a bottom schematic diagram of the floating fixture of the present invention;

[0027] Figure 8 is a schematic diagram of a horizontal propulsion device of the present invention;

[0028] Fig. 9 It is a schematic diagram of the installation of the column and the first guide plate of the present invention;

[0029] Among them, 1. machine table; 2. adjustable conveying device; 3. bottom plate; 4. movable conveying belt; 5. supporting convex edge; 6. fixed conveying belt; 7. screw module; 8. connecting block; 9. floating fixture; 10. first probe plate; 11. first plug-in terminal; 12. horizontal pushing device; 13. detection box; 14. second plug-in terminal; 15. carrier plate; 16. spring; 17. socket; 18. detection pin; 19. first guide column; 20. second guide column; 21. motor; 22. L-shaped block; 23. vertical plate; 24. long groove; 25. vertical slider; 26. first guide plate; 27. arc groove; 28. connecting plate; 29. ​​horizontal cylinder; 30. second guide plate; 31. vertical groove; 32. roller; 33. slide rail and slide groove mechanism; 34. pressing device; 35. pressing plate; 36. PCB board to be tested. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] like Figure 1 As shown, the present invention proposes an ICT online testing station, including a machine 1, wherein the machine 1 is provided with a testing instrument, and the machine 1 is provided with

[0032] like Figure 2 As shown, an adjustable conveying device 2, the adjustable conveying device 2 includes two groups of bottom plates 3, a conveyor belt assembly is arranged across the bottom plates 3, and a lifting device is arranged at the lower part of the bottom plate 3, and the lifting device drives the bottom plate 3 to move up and down; a supporting flange 5 is arranged on the opposite side of the conveyor belt assembly, and the supporting flange 5 is used to support the PCB board 36 to be tested; specifically, the conveying assembly includes two groups of fixed conveying belts 6 and a movable conveying belt 4, and the two groups of structures respectively include a driving motor 21 and a driving wheel, and the movable conveying belt 4 and the fixed conveying belt 6 are driven to rotate by the driving motor 21 and the driving wheel respectively, and the PCB board 36 to be tested spans between the movable conveying belt 4 and the fixed conveying belt 6. In order to improve the supporting performance, a supporting flange 5 is arranged at the lower part of the movable conveying belt 4 and the fixed conveying belt 6, and the two ends of the PCB board are pressed on the supporting flange 5, and a lifting device is arranged at the lower part of the bottom plate 3, and the lifting device can select a cylinder or an electric cylinder to adjust the height of the adjustable conveying device 2.

[0033] like Figure 2As shown, the conveyor belt assembly is provided with a blocking mechanism, which includes a motor 21, and an L-shaped block 22 is connected to the output end of the motor 21. The L-shaped block 22 is used to limit the movement of the PCB board. Clicking and rotating the L-shaped block 22 to drive the end of the rotator to press on one side of the PCB board can limit the PCB board from continuing to move with the conveyor belt. That is, when the PCB board is transported on the conveyor belt, after reaching the detection position, the movement is stopped by the blocking mechanism, and then the bottom plate 3 is driven down by the jacking device. After the PCB board is placed on the lower detection fixture, the movable conveyor belt 4 can move to a position, that is: the two ends of the bottom of the movable conveyor belt 4 are fixed with connecting blocks 8, and the connecting blocks 8 are respectively connected to two groups of screw modules 7. The screw module 7 drives the movable conveyor belt 4 to approach or move away from the fixed conveyor belt 6. The entire group of movable conveyor belts 4 are controlled to move away from the fixed conveyor belt 6 by the screw module 7, so that the PCB board falls from the supporting flange 5 to the floating fixture 9 at the bottom.

[0034] like Figure 3 , Figure 4 , Figure 7 As shown, a floating jig 9 is provided at the lower part of the conveyor belt assembly, a first probe plate 10 is provided on the machine platform 1 at the lower part of the floating jig 9, a plurality of first plug-in terminals 11 are provided on the first probe plate 10, and the first plug-in terminals 11 are electrically connected to the test instrument; a horizontal pushing device 12 is connected to the floating jig 9, the floating jig 9 includes a detection box 13, a second plug-in terminal 14 corresponding to the first plug-in terminal 11 is provided at the bottom of the detection box 13, and the horizontal pushing device 12 pushes the floating jig 9 in the horizontal direction, and the floating jig 9 moves downward so that the first plug-in terminal 11 is plugged with the second plug-in terminal 14;

[0035] A plurality of detection pins 18 are arranged on the top of the detection box 13. The number of the detection pins 18 is large and densely distributed on the top of the detection box 13. In order to keep the picture clear, only a few of them are shown in the figure. The detection pins 18 are electrically connected with the corresponding second plug-in terminals 14 in the detection box 13. The upper part of the detection box 13 is elastically connected with a carrier board 15, and the carrier board 15 is densely distributed with sockets 17 (only a part of them is shown in the figure). The detection probe corresponds to the socket 17, and the socket 17 corresponds to the detection point of the PCB board 36 to be tested. The pin passes through the socket 17 and is inserted into the PCB board 36 to be tested. The detection of different functions is realized by conducting the first plug-in terminal 11, the second plug-in terminal 14 and the detection pin 18.

[0036] Its specific working method is: the PCB board is transported on the conveyor belt, and after being stopped by the blocking mechanism, the lifting device drives the adjustable conveying device 2 to descend, so that the PCB board falls on the carrier 15 of the detection box 13. Since a spring 16 is arranged between the lower part of the carrier 15 and the top of the detection box 13, at this time, the PCB board 36 to be tested has not yet been plugged into the detection pin 18. The carrier 15 and the top of the detection box 13 are provided with a plurality of first guide columns 19 to ensure that the position between the carrier 15 and the detection box 13 is stable after the carrier 15 is pressed down, and to prevent the spring 16 from connecting. When the carrier 15 is pressed down, there is a lateral offset, which causes the pin to be unable to be aligned. The top of the carrier 15 is provided with a plurality of second guide columns 20, which are used to align the PCB board. There are also holes on the PCB board. Only after aligning with the second guide columns 20 can the accuracy of the position of the PCB board be determined, and the stability of the plugging can be ensured. At this time, the product is in place, and it is necessary to push the first plug-in terminal 11 and the second plug-in terminal 14 to be plugged in and connected.

[0037] Specifically: Figure 8 , Fig. 9As shown, the horizontal pushing device 12 also includes two sets of guide components fixed on the machine platform 1, and the guide components include a vertical plate 23, one side of the vertical plate 23 is provided with a long groove 24, and the other side is vertically slidably connected with a vertical slider 25, and a first guide plate 26 is inserted into the long groove 24, and the first guide plate 26 is provided with an arc groove 27 with an end inclined upward, and the ends of the first guide plates 26 of the guide components on both sides are connected by a connecting plate 28, and the connecting plate 28 is connected with a horizontal cylinder 29; the vertical plate 23 A second guide plate 30 is fixed on the upper side, and a plurality of vertical grooves 31 are provided on the second guide plate 30. A section of the bottom of the arc groove 27 corresponds to the vertical groove 31. A plurality of rollers 32 are provided on the vertical slider 25. The rollers 32 correspond to the arc groove 27 and the vertical groove 31 and extend into the arc groove 27 and the vertical groove 31 at the same time. The vertical slider 25 is connected to the first vertical plate 23 through a slide rail and slide groove mechanism 33. A twitching groove is provided on the vertical slider 25. A protrusion is provided at the bottom of the detection box 13. The protrusion extends into the pulling groove, and the detection box 13 can be pulled out along the pulling groove on the vertical slider 25 for checking the internal pin situation or maintenance. After the pull-in, when the horizontal cylinder 29 is extended, it can push the first guide plate 26 to move in the long groove 24, and the roller 32 of the vertical slider 25 can move along the arc groove 27. At the same time, the vertical groove 31 corresponding to the arc groove 27 limits the horizontal trajectory of the roller 32, so that the movement trajectory in the vertical direction is realized by pushing in the horizontal direction. The problem that a lifting mechanism cannot be provided vertically is solved, and the lifting and lowering of the detection box 13 is more stable through the design of the combination of the arc groove 27 and the vertical groove 31. The detection box 13 is pulled downward, and the second plug-in terminal 14 at the lower part of the detection box 13 is plugged into the first plug-in terminal 11. Moreover, since more performances need to be tested, a plurality of groups of first plug-in terminals 11 and second plug-in terminals 14 are provided, which are distributed at the lower part of the detection box 13. When plugged in, the force is more uniform, and the phenomenon of partial incomplete plugging will not occur.

[0038] And the PCB board 36 to be tested is pressed down by the electric cylinder arranged on the top, and the output end of the electric cylinder is connected to the pressing plate 35, and the pressing plate 35 also has a guide column, which is used to align with the carrier board 15 to ensure that it does not deviate from the carrier board 15 when pressed down. The electric cylinder pushes the carrier board 15 downward, that is, the spring 16 is compressed, and the detection pin 18 passes through the jack 17 and connects to the PCB board 36 to be tested, so that it can be connected with the detection instrument for detection.

[0039] A pressing device 34 is provided above the conveyor belt, and a pressing plate 35 is connected to the output end of the pressing device 34. The pressing device 34 drives the pressing plate 35 to press down on the PCB board 36 to be tested, and presses the carrier board 15 downward so that the pins pass through the through holes and align with the points of the PCB board 36 to be tested.

Claims

1. An ICT online testing station, comprising a machine platform, wherein a testing instrument is provided inside the machine platform, characterized in that: The machine is provided with An adjustable conveying device, the adjustable conveying device comprises two sets of bottom plates, a conveyor belt assembly is arranged across the bottom plates, and a lifting device is arranged at the lower part of the bottom plates, and the lifting device drives the bottom plates to move up and down; A supporting convex edge is arranged on the opposite side of the conveyor belt assembly, and the supporting convex edge is used to support the PCB board to be tested on the conveyor belt assembly; A floating fixture is provided at the lower part of the conveyor belt assembly, a first probe board is provided on the machine platform at the lower part of the floating fixture, a plurality of first plug-in terminals are provided on the first probe board, and the first plug-in terminals are electrically connected to the test instrument; a horizontal pushing device is connected to the floating fixture; The floating fixture comprises a detection box, a second plug-in terminal corresponding to the first plug-in terminal is provided at the bottom of the detection box, and the horizontal pushing device pushes the floating fixture downward so that the first plug-in terminal is plugged with the second plug-in terminal; A plurality of detection pins are arranged on the top of the detection box, and the detection pins are electrically connected with the corresponding second plug-in terminals in the detection box. A carrier board is elastically connected to the upper part of the detection box, and the carrier board is densely covered with jacks, and the detection probes correspond to the jacks; A pressing device is provided above the conveyor belt, and a pressing plate is connected to the output end of the pressing device. The pressing device drives the pressing plate to press down on the PCB to be tested, and presses the carrier plate downward so that the pins pass through the through holes and align with the points of the PCB to be tested.

2. The ICT online testing station according to claim 1, characterized in that: The lifting device is a pneumatic cylinder, an oil cylinder or an electric cylinder.

3. The ICT online testing station according to claim 1, characterized in that: A plurality of first guide posts are arranged on the top of the carrier plate and the detection box, and a plurality of second guide posts are arranged on the top of the carrier plate.

4. The ICT online testing station according to claim 1, characterized in that: A plurality of springs are arranged between the carrier plate and the top of the test box.

5. The ICT online testing station according to claim 1, characterized in that: The conveyor belt assembly is provided with a blocking mechanism, which includes a motor. An L-shaped block is connected to the output end of the motor, and the L-shaped block is used to limit the movement of the PCB board.

6. The ICT online testing station according to claim 1, characterized in that: The horizontal pushing device also includes two groups of guide assemblies fixed on the machine platform, the guide assemblies include a vertical plate, a long groove is provided on one side of the vertical plate, and a vertical slider is vertically slidably connected on the other side, a first guide plate is inserted in the long groove, an arc-shaped groove with an end inclined upward is provided on the first guide plate, the ends of the first guide plates of the guide assemblies on both sides are connected by a connecting plate, and a horizontal cylinder is connected to the connecting plate; a second guide plate is fixed on the vertical plate, a plurality of vertical grooves are provided on the second guide plate, a bottom section of the arc-shaped groove corresponds to the vertical groove, a plurality of rollers are provided on the vertical slider, the rollers correspond to the arc-shaped groove and the vertical groove and extend into the arc-shaped groove and the vertical groove at the same time.

7. The ICT online testing station according to claim 6, characterized in that: The vertical sliding block is connected to the first vertical plate through a sliding rail and sliding groove mechanism.

8. The ICT online testing station according to claim 6, characterized in that: The vertical sliding block is provided with a pulling groove, and the bottom of the detection box is provided with a protrusion, and the protrusion extends into the pulling groove.

9. The ICT online testing station according to claim 1, characterized in that: The pressing device is an electric cylinder.

10. The ICT online testing station according to claim 1, characterized in that: The conveying assembly includes two groups of fixed conveying belts and a movable conveying belt. One section of the fixed conveying belt and the movable conveying belt is pressed on the supporting convex edge. Connecting blocks are fixed at both ends of the bottom of the movable conveying belt. The connecting blocks are respectively connected to two groups of screw modules. The screw modules drive the movable conveying belt to approach or move away from the fixed conveying belt.

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