CN110824334A - A PCB board inspection fixture with positioning function - Google Patents

Abstract

The invention discloses a PCB board detection fixture with a positioning function, which relates to the field of PCB board detection. The positioning and detection processes of the existing PCB board detection fixture are carried out separately, which prolongs the detection time and leads to the problem of low detection efficiency. The following scheme is now proposed, which includes a workbench and a controller fixed on the workbench. The workbench is fixed with a placement seat, an L-shaped guide rod, and a drive motor sequentially arranged from left to right. The four side chutes of the seat are placed opposite to each other, and rectangular cross bars are fixed between the inner walls of the two ends of the four chutes. The present invention can not only be used for the installation of the PCB board through the setting of the driving motor, the threaded screw, the mounting plate, the L-shaped connecting rod, the cross-shaped block, the insertion rod, the spring, the clamping block, the detection probe, the controller and the display. The positioning and detection, and its fixing and detection process are carried out continuously, which can shorten the detection time and improve the detection efficiency.

Description

A PCB board inspection fixture with positioning function

technical field

The invention relates to the field of PCB board detection, in particular to a PCB board detection fixture with a positioning function.

Background technique

The Chinese name of PCB board is printed circuit board, also known as printed circuit board and printed circuit board. It is an important electronic component, a support body for electronic components, and a provider of electrical connections for electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. The current PCB board testing fixture, when in use, the positioning and fixing of the PCB board and the detection process are usually carried out separately, that is, after the PCB board is manually positioned and fixed, and then the detection probe is activated to detect the PCB board. There are two processes. The discontinuity makes the detection time longer, resulting in low detection efficiency. Therefore, it is necessary to continue in-depth research to provide a detection fixture with good positioning effect and high detection efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the shortcomings of the existing PCB board detection fixture that the positioning and detection processes are carried out separately, which prolongs the detection time and leads to low detection efficiency, and proposes a PCB board detection fixture with a positioning function.

In order to achieve the above object, the present invention adopts the following technical solutions:

A PCB board detection fixture with positioning function, comprising a worktable and a controller fixed on the worktable, the worktable is fixed with a placement seat, an L-shaped guide rod, and a drive motor sequentially arranged from left to right, The worktable is provided with chutes which are opposite to the four sides of the placing seat, and rectangular cross bars are fixed between the inner walls of the two ends of the four chutes. The inner clamping block, the lower end of the clamping block protrudes from the chute and is hinged with a sleeve, the lower end of the sleeve is provided with a socket, the output end of the drive motor is driven and connected with a vertical threaded screw, and the upper end of the threaded screw is connected It is rotatably connected with the short end of the L-shaped guide rod. The screw drive on the threaded screw rod is matched with a horizontal mounting plate. The mounting plate is slidably fitted on the long end of the L-shaped guide rod. The detection probe above the seat is electrically connected to the input end of the controller, the top surface of the mounting plate is fixed with a display that is electrically connected to the output end of the controller, and the bottom surface of the mounting plate is fixed with a long end penetrating through The L-shaped connecting rod of the workbench, the short end of the L-shaped connecting rod is fixed with a cross-shaped block located under the placing seat, and the cross-shaped block has four ends that are adapted to the chute, and all four ends are hinged There is a connecting rod, the other end of the connecting rod is fixed with an inserting rod, the other end of the inserting rod is slidably fitted in the jack, and a spring located in the jack is fixedly connected between one end of the inserting rod located in the jack and the sleeve. .

Preferably, one end of the insertion rod located in the jack and the top wall of the jack are provided with connecting rings, and both ends of the spring are respectively fixed on the two connecting rings.

Preferably, the shape of the clamping block is a rectangle, the clamping block is provided with a first rectangular hole matched with the rectangular crossbar, and the rectangular crossbar is slidably fitted in the first rectangular hole.

Preferably, the chute is provided with a second rectangular hole matching with the L-shaped connecting rod, and the long end of the L-shaped connecting rod is slidably fitted in the second rectangular hole.

Preferably, the original length of the spring is adapted to the length of the jack, and the length of the insertion rod is greater than the length of the jack.

Preferably, the short end of the L-shaped guide rod is provided with an installation hole matched with the threaded screw rod, and the upper end of the threaded screw rod is rotatably installed in the installation hole.

Preferably, a PCB board to be tested is arranged on the placing seat between the four clamping blocks, a guide hole matching the L-shaped guide rod is arranged on the installation board, and the long end of the L-shaped guide rod is slidably matched with the guide rod. inside the hole.

The beneficial effects of the present invention are: through the setting of the driving motor, the threaded screw, the mounting plate, the L-shaped connecting rod, the cross-shaped block, the inserting rod, the spring, the clamping block, the detection probe, the controller and the display, it can not only be used for The positioning and detection of the PCB board are carried out continuously, which can shorten the detection time and improve the detection efficiency. In addition, four clamping blocks clamp and position the PCB board to be tested from four directions, and the positioning effect is good. , and the indirect force of the spring is used for clamping, so that the clamping force will not be clamped and the PCB board to be tested will not be clamped, thereby prolonging its service life.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic top view of the workbench in FIG. 1 .

FIG. 3 is a schematic diagram of the connection of the spring in FIG. 1 .

FIG. 4 is a schematic diagram of the cross-shaped block in FIG. 1 .

Labels in the figure: 1 worktable, 2 chute, 3 rectangular crossbar, 4 clamping block, 5 placing seat, 6 L-shaped guide rod, 7 driving motor, 8 threaded screw, 9 mounting plate, 10 display, 11 detection probe Needle, 12 L-shaped connecting rod, 13 cross-shaped block, 14 connecting rod, 15 plunger rod, 16 sleeve, 17 spring, 18 controller.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-4, a PCB board inspection fixture with positioning function includes a workbench 1 and a controller 18 fixed on the workbench 1. The workbench 1 is fixed with placement seats 5 arranged sequentially from left to right , L-shaped guide rod 6, drive motor 7, the worktable 1 is provided with the chute 2 opposite to the four sides of the placing seat 5, and a rectangular cross bar 3 is fixed between the inner walls of both ends of the four chute 2 , each rectangular crossbar 3 is movably sleeved with a clamp block 4 that is slidably fitted in the chute 2, the lower end of the clamp block 4 extends out of the chute 2 and is hinged with a sleeve 16, and the lower end of the sleeve 16 is provided with a jack , the output end of the drive motor 7 is connected with a vertical threaded screw 8, the upper end of the threaded screw 8 is rotatably connected with the short end of the L-shaped guide rod 6, and the screw drive on the threaded screw 8 is matched with a horizontal mounting plate 9 , the mounting plate 9 is slidably fitted on the long end of the L-shaped guide rod 6, the bottom surface of the mounting plate 9 is fixed with a detection probe 11 located above the placement seat 5, and the detection probe 11 is electrically connected to the input end of the controller 18, The display 10 electrically connected to the output end of the controller 18 is fixed on the top surface of the mounting plate 9 , the L-shaped connecting rod 12 whose long end penetrates through the workbench 1 is fixed on the bottom surface of the mounting plate 9 , and the short end of the L-shaped connecting rod 12 is fixed A cross-shaped block 13 located below the placing seat 5 is fixed. The cross-shaped block 13 has four end portions that are compatible with the chute 2. The four end portions are hinged with a connecting rod 14, and the other end of the connecting rod 14 is fixed with a connecting rod 14. Insertion rod 15, the other end of insertion rod 15 is slidably fitted in the socket, and a spring 17 located in the socket is fixedly connected between one end of the insertion rod 15 in the socket and the sleeve 16.

In this embodiment, one end of the insertion rod 15 located in the jack and the top wall of the jack are provided with connecting rings, and both ends of the spring 17 are respectively fixed on the two connecting rings.

In this embodiment, the shape of the clamping block 4 is a rectangle, the clamping block 4 is provided with a first rectangular hole matched with the rectangular cross bar 3 , and the rectangular cross bar 3 is slidably fitted in the first rectangular hole.

In this embodiment, the sliding groove 2 is provided with a second rectangular hole matching with the L-shaped connecting rod 12 , and the long end of the L-shaped connecting rod 12 is slidably fitted in the second rectangular hole.

In this embodiment, the original length of the spring 17 is adapted to the length of the socket, and the length of the insertion rod 15 is greater than the length of the socket.

In this embodiment, the short end of the L-shaped guide rod 6 is provided with an installation hole matching with the threaded screw 8, and the upper end of the threaded screw 8 is rotatably installed in the installation hole.

In this embodiment, a PCB to be tested placed on the placing seat 5 is arranged between the four clamping blocks 4 , the mounting plate 9 is provided with a guide hole matching the L-shaped guide rod 6 , and the length of the L-shaped guide rod 6 is The end is slidably fitted in the guide hole.

In the present invention, the fixing method between the components is one of screw fixing or welding fixing, the detection probe 11 and the display 10 are both in the prior art, and the provided controller 18 is an existing single-chip controller.

When the present invention is in use, after the PCB board to be tested is placed on the placing seat 5, the threaded screw 8 can be driven to rotate by the driving motor 7, so that the mounting plate 9 and the L-shaped connecting rod 12 move down as a whole. At this time, ten The glyph block 13 moves down, and drives the four insertion rods 15 to move down, so that the four springs 17 can be pulled. The measuring PCB board moves and clamps the PCB board, so as to realize the positioning work. When the cross-shaped block 13 continues to move down, the spring 17 continues to stretch. At this time, the detection probe 11 contacts the PCB board to be tested, so as to realize the detection , the detection probe 11 transmits the detection information to the controller 18, and the controller 18 controls the display 10 to display the detection information after processing the information. By moving and sending the PCB to be tested, the whole device has a simple structure and low production cost. Not only the fixing and detection are carried out continuously, but also the detection time can be shortened and the detection efficiency can be improved, and the four clamping blocks 4 can clamp the PCB to be tested from four directions. Hold the position, and indirectly exert the force of the spring 17 for clamping, so that the clamping force will not be clamped and the PCB board to be tested will not be clamped, and its service life will be prolonged.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (7)

1. A PCB detection jig with a positioning function comprises a workbench (1) and a controller (18) fixed on the workbench (1), and is characterized in that a placing seat (5), an L-shaped guide rod (6) and a driving motor (7) which are sequentially arranged from left to right are fixed on the workbench (1), sliding grooves (2) opposite to four side edges of the placing seat (5) are formed in the workbench (1), rectangular cross rods (3) are fixed between the inner walls of two ends of the four sliding grooves (2), clamping blocks (4) in the sliding grooves (2) are movably sleeved on each rectangular cross rod (3) and matched with the sliding grooves, the lower ends of the clamping blocks (4) extend out of the sliding grooves (2) and are hinged with a sleeve (16), a jack is arranged at the lower end of the sleeve (16), the output end of the driving motor (7) is connected with a vertical threaded lead screw (8) in a transmission manner, the upper end of the threaded lead screw (8) is rotatably connected with the short end of the L-shaped guide rod (6), a transverse mounting plate (9) is matched with the threaded screw rod (8) in a spiral transmission manner, the mounting plate (9) is matched with the long end of the L-shaped guide rod (6) in a sliding manner, a detection probe (11) positioned above the placing seat (5) is fixed on the bottom surface of the mounting plate (9), the detection probe (11) is electrically connected with the input end of the controller (18), a display (10) electrically connected with the output end of the controller (18) is fixed on the top surface of the mounting plate (9), an L-shaped connecting rod (12) with the long end penetrating through the workbench (1) is fixed on the bottom surface of the mounting plate (9), a cross-shaped block (13) positioned below the placing seat (5) is fixed on the short end of the L-shaped connecting rod (12), the cross-shaped block (13) is provided with four end parts adaptive to the sliding grooves (2), connecting rods (14) are hinged to the four end parts, and an inserting rod (15) is fixed to, the other end of the inserted bar (15) is in sliding fit with the inside of the jack, and a spring (17) positioned in the jack is fixedly connected between one end of the inserted bar (15) positioned in the jack and the sleeve (16).

2. The PCB detecting jig with the positioning function as claimed in claim 1, wherein one end of the inserting rod (15) located in the inserting hole and the top wall of the inserting hole are provided with connecting rings, and two ends of the spring (17) are respectively fixed on the two connecting rings.

3. The PCB detecting jig with the positioning function as claimed in claim 1, wherein the shape of the clamping block (4) is rectangular, the clamping block (4) is provided with a first rectangular hole matched with the rectangular cross rod (3), and the rectangular cross rod (3) is in sliding fit in the first rectangular hole.

4. The PCB detecting jig with the positioning function as claimed in claim 1, wherein the sliding groove (2) is provided with a second rectangular hole matching with the L-shaped connecting rod (12), and the long end of the L-shaped connecting rod (12) is slidably fitted in the second rectangular hole.

5. The PCB detecting jig with the positioning function as claimed in claim 1, wherein the original length of the spring (17) is adapted to the length of the insertion hole, and the length of the insertion rod (15) is greater than the length of the insertion hole.

6. The PCB detecting jig with the positioning function as claimed in claim 1, wherein the short end of the L-shaped guide rod (6) is provided with a mounting hole matched with the threaded screw rod (8), and the upper end of the threaded screw rod (8) is rotatably mounted in the mounting hole.

7. The PCB detecting jig with the positioning function according to claim 1, wherein the PCB to be detected arranged on the placing seat (5) is arranged between the four clamping blocks (4), the mounting plate (9) is provided with a guide hole matched with the L-shaped guide rod (6), and the long end of the L-shaped guide rod (6) is in sliding fit in the guide hole.

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