CN116026210A

CN116026210A - Circuit board detection device

Info

Publication number: CN116026210A
Application number: CN202211651775.6A
Authority: CN
Inventors: 金子进
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-04-28

Abstract

The invention relates to a circuit board detection device, which comprises a detection table, an extrusion mechanism fixed on the top surface of the detection table and used for providing clamping force for a clamping mechanism to clamp a circuit board rapidly, and a detection mechanism arranged on the front side of the detection table and used for detecting the warpage of the circuit board arranged on the top surface of the detection table.

Description

Circuit board detection device

Technical Field

The invention relates to the technical field of detection, in particular to a circuit board detection device.

Background

After copper is coated on the surface of the circuit board, the circuit board can be deformed, the deformation amplitude is not large, and the circuit board is bent with small amplitude, and in the circuit board industry, the deformation is called warp deformation, in order to detect whether the circuit board has warp or not, the circuit board is often required to be placed on a large gravel table top, the change of the lowest point and the highest point of the circuit board is measured by using a gauge, and the change value of the warp is obtained through the comparison of two values.

The detection mode has the following defects: when the detection is carried out, the value is inconvenient to read only by a scale mark reading mode when the value is measured, the warping change of the circuit board only exists at a certain point, but the warping degree is changed on a certain bending section of the circuit board, so that the method for detecting the warping degree change value of the circuit board only by a gauge is single, and the detection mode is not visual.

Disclosure of Invention

Based on the problems, the invention provides the circuit board detection device, which not only can detect the warpage of a circuit, but also can leave marks in the variation range of the warpage after detection, and the detection mode is more visual.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the circuit board detection device comprises a detection table, a clamping mechanism fixed at one end of the top surface of the detection table, an extrusion mechanism fixed on the top surface of the detection table and used for providing clamping force for the clamping mechanism to clamp the circuit board rapidly, and a detection mechanism arranged at the front side of the detection table and used for detecting the warping degree of the circuit board arranged on the top surface of the detection table, wherein a imprinting assembly capable of carrying out hydraulic spraying type marking on the warping section of the detection mechanism when the detection mechanism detects the warping degree change of a certain position of the circuit board is arranged on the detection mechanism.

As a further preferred option: the clamping mechanism comprises a guide seat fixed on the top surface of the detection table, guide grooves formed in two ends of the guide seat, sliding blocks in the two guide grooves in sliding fit, and a pressing seat connected between the two sliding blocks, wherein two slope blocks are symmetrically arranged on the top surface of the pressing seat, the pressing mechanism comprises a stand column fixed on the top surface of the detection table, a holding spring arranged on the top end of the stand column through double nuts, pressing columns extending on the top surfaces of the two slope blocks are respectively arranged at two ends of the holding spring, the two slope blocks are gradually inclined surfaces inclined upwards from the mutually connecting ends towards the mutually far ends, and the two pressing columns are respectively pressed on the inclined surfaces of the two slope blocks.

As a further preferred option: guide holes which are communicated with the bottom surface of the detection table and are simultaneously communicated with the guide grooves are formed in two ends of the guide seat, the sliding blocks at two ends of the pressing seat are not only in sliding fit in the two guide grooves, but also guide rods which are in sliding vertical downward sliding fit in the two guide holes are fixed on the bottom surfaces of the two sliding blocks, and springs which are vertically upward and sleeved on the periphery of the guide rods are also fixed in the two guide grooves.

As a further preferred option: the outer layers of the two pressing columns are sleeved with rotating sleeves through bearings, and the two pressing columns are in rolling contact with the inclined surfaces of the slope blocks through the rotating sleeves.

As a further preferred option: the inner side surface of the guide seat is fixed with a guide frame, and the pressing seat is in sliding fit in the guide frame.

As a further preferred option: the detection device comprises a detection table, a pressing seat, a detection mechanism, a sealing plate and a control spring, wherein the front side of the detection table is provided with a cavity channel, a screw is installed in the cavity channel through a bearing, the end of the detection table is fixedly connected with a motor connected with the screw in a transmission manner, a pressure sensor which is started by the power of the command motor when the pressing seat extrudes the circuit board is fixed on the bottom surface of the detection table, the detection mechanism comprises a sliding seat which is in sliding fit with the cavity channel and is matched with the screw through a threaded hole, a detection seat which is fixed at the outer end of the sliding seat and is in sliding fit with the front side of the detection table, the detection seat is a vertical pipe, a vertical upward detection needle is arranged in a pipe cavity of the detection seat, the sealing plate is fixedly provided with a jack communicated with the pipe cavity of the detection seat, one end of the detection needle extends into the detection seat through the jack, the other end of the detection needle stretches out of the cavity bottom surface of the detection seat upwards through the jack, and the other end of the detection needle drives one end of the sliding seat to the other end of the cavity channel to slide, and the detection seat synchronously moves along the detection seat at the front end of the sliding seat, and the detection needle is enabled to warp along the top surface of the detection needle when the detection needle gradually moves along the detection needle.

As a further preferred option: the bottom of detection needle is equipped with can follow its elevating movement and simultaneously sliding fit in the instruction board that detects in the seat again, detect the seat and be transparent, be equipped with on the high size of detection seat with instruction board assorted instruction scale mark.

As a further preferred option: the detection needle is a needle tube with a needle hole, the indication plate is a hollow plate, the imprinting assembly comprises a plurality of liquid discharge holes formed in the detection needle and detection liquid filled in the detection seat and located above the indication plate, the needle hole of the detection needle is communicated with the detection liquid, and the supporting spring is connected between the indication plate and the bottom surface of the inner cavity of the detection seat.

Compared with the prior art, the invention has the following beneficial effects:

the mode of holding the spring location can be used for rapidly positioning the circuit board to be detected on the detection table, and only one end of the circuit board is fixed, if the circuit board has the warp change, the unclamped end of the circuit board can be ensured to tilt upwards, and the location mode can not only rapidly position the circuit board, but also facilitate detection after positioning. The detection mechanism is driven by the motor, the detection needle of the detection mechanism is scratched on the bottom surface of the circuit board in the conveying process, when passing through the warping section of the circuit board, the detection needle can pop up upwards and carry the indication board to change the position on the detection seat, so that the warping degree change value is read out by utilizing the position change of the indication board on the detection seat, the detection mechanism is provided with a imprinting function, imprinting can be left on the warping degree change section in the detection process, the detection mode is more visual, screw transmission is adopted when the detection mechanism advances, so that the advancing is ensured to be more stable, the imprinting left on the bottom surface of the circuit board is more regular, the imprinting leaving mode is negative pressure generated by the position change of the indication board at the bottom end of the detection needle, liquid is smeared on the circuit board along the detection needle, the design is ingenious, and the structure is compact.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention from the front side;

FIG. 2 is a schematic view of the structure of the present invention in a front view and a lower bottom view;

FIG. 3 is a schematic view of the internal structure of the present invention, taken from FIG. 1 or FIG. 2, with one of the guide slots cut away, at a partial view;

FIG. 4 is a schematic view of the structure of the present invention, taken out from FIG. 1 or FIG. 2, after the press seat is removed from the inspection table;

FIG. 5 is a schematic view of a partially enlarged structure of the present invention from FIG. 4;

fig. 6 is a schematic diagram of the internal structure of the detection mechanism according to the present invention after the detection mechanism is broken away.

Part name is assigned in the figure: 1. a detection table; 2. a clamping mechanism; 21. a guide seat; 211. a guide hole; 212. a guide frame; 22. a guide groove; 221. a spring; 23. a slide block; 231. a guide rod; 24. pressing a base; 25. slope blocks; 3. an extrusion mechanism; 31. a column; 32. a double nut; 33. a holding spring; 34. pressing a column; 35. a rotating sleeve; 4. a detection mechanism; 41. a slide; 42. a detection seat; 421. indicating scale marks; 43. a detection needle; 44. a sealing plate; 45. a jack; 46. a support spring; 47. an indication board; 5. a blotting assembly; 51. a liquid discharge hole; 52. a detection liquid; 6. a cavity channel; 7. a screw; 8. a motor; 9. a pressure sensor.

Detailed Description

The following description of the embodiments of the present invention, taken in conjunction with the accompanying drawings, will be clearly and fully described in terms of the drawings, wherein the embodiments described are some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience of description and simplicity of description, only as to the orientation or positional relationship shown in the drawings, and not as an indication or suggestion that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present form will be understood in the specific case by those skilled in the art.

Referring to fig. 1 to 6, the circuit board inspection device comprises an inspection table 1, a clamping mechanism 2 fixed at one end of the top surface of the inspection table 1, an extrusion mechanism 3 fixed on the top surface of the inspection table 1 and used for providing clamping force for the clamping mechanism 2 to clamp the circuit board rapidly, and a detection mechanism 4 arranged at the front side of the inspection table 1 and used for detecting the warping degree of the circuit board arranged on the top surface of the inspection table 1, wherein the detection mechanism 4 is provided with a imprinting assembly 5 capable of carrying out hydraulic spraying type marking on the warping section when detecting the warping degree change of a certain position of the circuit board. The upper surface of the detection table 1 is horizontal, a circuit board to be detected (hereinafter collectively referred to as a circuit board) is placed on the detection table 1 when the detection table is used, one end of the circuit board is clamped by the clamping mechanism 2, and after the circuit board is clamped by one end of the clamping mechanism 2, if the circuit board has no warp change, the bottom surface of the circuit board is seamlessly attached to the upper surface of the detection table 1; in contrast, if the circuit board has a warp change, the circuit board is warped upwards further from the end, except that the clamped end can be attached to the detection table 1 in a seamless manner, so in order to detect the warp of the circuit board when the warp changes from one end to the other end, in the invention, only the clamping mechanism 2 for clamping one end of the circuit board is provided, the detection mechanism 4 for moving along the bottom surface of the circuit board from the clamping end to the other end when the bottom surface of the circuit board is detected is matched, the pressing mechanism 3 for facilitating the operation when the clamping mechanism 2 clamps one end of the circuit board is provided, and the imprinting assembly 5 which is assisted with the detection mechanism 4 and can leave a detection imprinting in the warp range on the bottom surface of the circuit board is provided, so that the detection performance is improved.

As a further preferred option: the clamping mechanism 2 comprises a guide seat 21 fixed on the top surface of the detection table 1, guide grooves 22 formed in two ends of the guide seat 21, sliding blocks 23 in the two guide grooves 22 in a sliding fit mode, and a pressing seat 24 connected between the two sliding blocks 23, two slope blocks 25 are symmetrically arranged on the top surface of the pressing seat 24, the pressing mechanism 3 comprises a stand column 31 fixed on the top surface of the detection table 1, a holding spring 33 arranged on the top end of the stand column 31 through a double nut 32, pressing columns 34 extending on the top surfaces of the two slope blocks 25 are respectively arranged at two ends of the holding spring 33, the two slope blocks 25 are gradually inclined upwards from the mutually connected ends towards the mutually far ends, and the two pressing columns 34 are respectively pressed on the inclined surfaces of the two slope blocks 25. The core component in the clamping mechanism 2 is a pressing seat 24, one end of the circuit board can be clamped on the detection table 1 after the pressing seat 24 is pressed down, the action of pressing the pressing seat 24 is implemented by two slope blocks 25 from the top ends of the pressing seat, the structure for pressing the two slope blocks 25 is derived from two pressing columns 34 on the pressing mechanism 3, in the initial state, the two pressing columns 34 are pressed on the two slope blocks 25 under the action of the elasticity released by the holding springs 33 and are positioned at the high point positions of the two slope blocks 25, the height positions of the two pressing columns 34 are lower than the height positions of the two slope blocks 25, therefore, in the initial state, when the two pressing columns 34 are pressed at the high point positions of the two slope blocks 25, the two slope blocks 25 are forced to be pressed to press the pressing seat 24 on the detection table 1, and in order to enable one end of the circuit board to be clamped, an operator only needs to hold the two pressing columns 34 in opposite directions to enable the two pressing columns 34 to move from the height of the slope blocks 25 to the position above the bottom points, and forms a drop with the sloping blocks 25, so that the two sloping blocks 25 lose the downward pressure at the moment, meanwhile, the pressing seat 24 between the two sloping blocks 25 also loses the downward pressure, because the two ends of the pressing seat 24 are in sliding fit in the guide grooves 22 at the two ends of the guide seat 21 through the sliding blocks 23, and the bottom ends of the two sliding blocks 23 are provided with springs 221 connected in the guide grooves 22, when the pressing seat 24 loses the pressure, the springs 221 at the two ends release the elastic force, and push the pressing seat 24 upwards by utilizing the sliding blocks 23 at the two ends, so that a space for clamping one end of a circuit board is reserved between the pressing seat 24 and the detection table 1, at the moment, one end of the circuit board is inserted into the space, then the hands are separated from the two pressing columns 34, the holding springs 33 between the two pressing columns 34 release the elastic force again, and push the two pressing columns 34 to the high-point positions of the two sloping blocks 25 again, so as to push the two sloping blocks 25 to drop with the pressing seat 24, and finally forces the bottom surface of the pressing seat 24 to press against the circuit board, forcing the circuit board to be clamped on the test table. In the use process, an operator can clamp the circuit board or quickly dismantle the circuit board after finishing detection only by holding the two pressing columns 34 by hand or separating the hands from the two pressing columns 34, so that the clamping mechanism 2 and the pressing mechanism 3 are arranged, the clamping principle is simpler, and the operation is convenient.

As a further preferred option: guide holes 211 which are communicated with the bottom surface of the detection table 1 and are simultaneously communicated with the guide grooves 22 are formed in two ends of the guide seat 21, sliding blocks 23 at two ends of the pressing seat 24 are not only in sliding fit in the two guide grooves 22 to ensure that the pressing seat 24 moves more stably in a lifting mode, guide rods 231 which slide downwards vertically and are in sliding fit in the two guide holes 211 are fixed on the bottom surfaces of the two sliding blocks 23 in the same way, a spring 221 which is vertically upwards and sleeved on the periphery of the guide rods 231 is also fixed in the two guide grooves 22 and used for providing elasticity for the pressing seat 24, and the pressing seat 24 can be lifted again when the pressing seat 24 loses the downward pressure.

As a further preferred option: the front side of the detection table 1 is provided with a cavity 6, a screw rod 7 is installed in the cavity 6 through a bearing, the end part of the detection table 1 is fixedly connected with a motor 8 which is connected with the screw rod 7 in a transmission way, a pressure sensor 9 which is used for simultaneously extruding a circuit board and starting the motor 8 by electricity is fixed on the bottom surface of the pressing seat 24, the detection mechanism 4 comprises a sliding seat 41 which is in sliding fit in the cavity 6 and the inner end of which is matched with the screw rod 7 through a threaded hole, a detection seat 42 which is fixed at the outer end of the sliding seat 41 and is in sliding fit on the front of the detection table 1, the detection seat 42 is a vertical pipe, a sealing plate 44 is fixed at the top end of the detection seat 42, a jack 45 which is communicated with the pipe cavity of the detection seat 42 is arranged in the pipe cavity of the detection seat 42, one end of the detection needle 43 extends into the detection seat 42 through the jack 45, a supporting spring 46 is connected between the bottom surface of the inner cavity of the detection seat 42 and the other end of the detection needle 43, the other end of the detection needle 43 extends upwards through the jack 45, the screw rod 7 rotates and drives the sliding seat 41 to slide from one end of the cavity 6 to the other end of the screw rod 41 and slides along the other end of the detection seat 41, and the other end of the detection needle moves along the detection seat 43 synchronously along the detection needle 43, and the front of the detection needle moves along the detection needle 43, and the detection needle moves along the top surface 43 when the detection needle moves along the front surface.

As a further preferred option: the bottom end of the detecting needle 43 is provided with an indicating plate 47 which can move up and down along with the detecting needle and is in sliding fit with the detecting seat 42, the detecting seat 42 is transparent, and the height dimension of the detecting seat 42 is provided with indicating scale marks 421 matched with the indicating plate 47.

As a further preferred option: the detection needle 43 is a needle tube with a needle hole, the indication plate 47 is a hollow plate, the imprinting assembly 5 comprises a plurality of liquid discharge holes 51 formed on the detection needle 43 and detection liquid 52 filled in the detection seat 42 and positioned above the indication plate 47, the needle hole of the detection needle 43 is communicated with the detection liquid 52, and the supporting spring 46 is connected between the indication plate 47 and the bottom surface of the inner cavity of the detection seat 42.

The working principle is as follows: the operator holds the two pressing columns 34 to press the two pressing columns 34 with force in a manner of approaching each other, so that the two pressing columns 34 can be transferred from the high position of the two sloping blocks 25 to the low position of the joint of the two sloping blocks 25, meanwhile, under the action of holding force, the holding spring 33 between the two pressing columns 34 is contracted and stores elastic force, when the two pressing columns 34 perform the displacement, the two pressing columns 34 swing horizontally, so that when reaching the low position of the sloping blocks 25, the two sloping blocks 25 below the two pressing columns 34 are not pressed any more, and the pressing blocks 25 can also be lifted up along the guide frame 212 due to the pressing force generated by the two pressing columns 34 when being at the high position due to the loss of the two pressing columns 25, the pressing seat 24 between the two sloping blocks 25 can be stably guided by the guide frames 212 in a second stage along the lifting manner of the guide holes 211 besides being stably guided by the guide frames 212, the multi-stage stable guiding mode is adopted to ensure that the pressing seat 24 is more stable when rising, of course, the guiding structure is also utilized to ensure that the pressing seat 24 is more stable when falling again, meanwhile, the bottom surface of the pressing seat 24 is kept level, a clamping gap is formed between the bottom surface of the pressing seat 24 and the top surface of the detection table 1 after rising, one end of a circuit board is inserted into the gap between the pressing seat 24 and the detection table 1, the hand is separated from the pressing column 34, the two pressing columns 34 are reset again under the action of the holding springs 33, and finally, the rotating sleeves 35 on the two pressing columns 34 are utilized to roll and press the two slope blocks 25, the rolling action of the two rotating sleeves 35 can reduce noise generated when the slope blocks 25 are directly extruded by the pressing columns 34, secondly, the two pressing columns 34 can roll and press the slope blocks 25 along the inclined surfaces of the two slope blocks 25 when resetting in opposite directions, and force the two sloping blocks 25 to push the same pressing seat 24 to stably descend, because the two pressing columns 34 are connected on the same holding spring 33 together, when hands are separated from the two pressing columns 34, the holding spring 33 rapidly releases elastic force to force the two pressing columns 34 to rapidly reset to the high points of the two sloping blocks 25 to press the sloping blocks 25, so that the pressing seat 24 at the bottom ends of the two sloping blocks 25 can rapidly clamp a circuit board on the detection table 1, and simultaneously the front side of the bottom surface of the circuit board falls on the detection needle 43. Therefore, in the invention, the holding spring 33 is adopted to control the lifting of the pressing seat 24, so that the clamping function can be ensured to act more rapidly. Since the pressure sensor 9 is fixed on the bottom surface of the pressing seat 24, the pressing seat 24 presses the circuit board, the pressure sensor 9 on the bottom surface of the pressing seat presses the circuit board, pressure sensing is generated, the motor 8 is started by using a sensing signal and a controller (the controller is not shown in the prior art), the motor 8 rotates with the screw rod 7, the screw rod 7 drives the sliding seat 41 to linearly move along the cavity 6, the detecting needle 43 on the detecting seat 42 moves along the bottom surface of the circuit board, and if the circuit board has a warp change, the detecting needle 43 is gradually lifted due to the elastic support of the supporting spring 46 by the indicating plate 47 at the bottom end, the detecting seat 42 is transparent again due to the fact that the indicating plate 47 is positioned in the detecting seat 42, and the detecting seat 42 is provided with graduation marks, so that the change value is read according to the position change of the indicating plate 47 in the detecting seat 42. When the detection seat 42 moves to detect, the screw rod 7 drives the detection seat at a low speed, so that the movement is stable, the detected change value in the warp range of the circuit board is more accurate, the detection seat 42 is filled with the detection liquid 52 corresponding to the upper part of the indication plate 47, so that the detection seat 47 can be ensured to be more stable in ascending movement, the indication plate 47 is of a hollow structure, the quality is light, the support spring 46 is convenient for pushing the indication plate 47 to ascend, the indication plate 47 can leave a reading value mark on a scale mark in the ascending process, the indication plate 47 can enable the detection liquid 52 to generate pressure while ascending, the detection liquid 52 is forced to enter the detection needle 43 from the liquid discharge hole 51, finally, the needle tube of the detection needle 43 is sprayed onto the circuit board, a print which is convenient for visual observation is left on the circuit board, the detection mode integrates the numerical reading and the print mark, the working principle of the print mark is obtained, when the warp value of the circuit board is detected by the detection needle 43, the indication plate 47 at the bottom end of the detection plate is pushed to ascend in the detection seat 42, the detection liquid 52 is formed in the ascending process, the pressure is pressed down, the warp value of the circuit board is not changed, but the warp value of the circuit board can be further visually observed, the warp value can be more visually, but the warp value of the circuit board is not changed by the warp change can be further, and the warp value can be displayed by the warp change of the circuit board.

The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. Circuit board detection device, its characterized in that: including detecting platform (1), fix clamping mechanism (2) of detecting platform (1) top surface one end, fix be used for providing clamping force in order to press from both sides fast extrusion mechanism (3) of circuit board to clamping mechanism (2) on detecting platform (1) top surface to and set up in detecting platform (1) front side be used for carrying out warpage detection to the circuit board of dress on detecting platform (1) top surface detection mechanism (4), be equipped with on detection mechanism (4) when it detects that a certain position of circuit board takes place warpage change, can carry out hydraulic pressure spraying mark's print subassembly (5) to its this warpage section.

2. The circuit board inspection device according to claim 1, wherein: the clamping mechanism (2) comprises a guide seat (21) fixed on the top surface of the detection table (1), guide grooves (22) formed in two ends of the guide seat (21), sliding blocks (23) in the two guide grooves (22) in sliding fit, and a pressing seat (24) connected between the two sliding blocks (23), wherein two slope blocks (25) are symmetrically arranged on the top surface of the pressing seat (24), the pressing mechanism (3) comprises a stand column (31) fixed on the top surface of the detection table (1), a holding spring (33) arranged on the top end of the stand column (31) through a double nut (32), pressing columns (34) extending on the top surfaces of the two slope blocks (25) are respectively arranged at two ends of the holding spring (33), the two slope blocks (25) gradually incline upwards from the mutually connecting ends towards the mutually far ends, and the two pressing columns (34) are respectively pressed on the inclined surfaces of the two slope blocks (25).

3. The circuit board inspection device according to claim 2, wherein: guide holes (211) which are communicated with the bottom surface of the detection table (1) and are simultaneously communicated with the guide grooves (22) are formed in the two ends of the guide seat (21), sliding blocks (23) at the two ends of the pressing seat (24) are slidably matched in the two guide grooves (22), guide rods (231) which are vertically downward and slidably matched in the two guide holes (211) are fixed on the bottom surfaces of the two sliding blocks (23), and springs (221) which are vertically upward and sleeved on the peripheries of the guide rods (231) are also fixed in the two guide grooves (22).

4. A circuit board inspection apparatus according to claim 3, wherein: the outer layers of the two pressing columns (34) are sleeved with rotating sleeves (35) through bearings, and the two pressing columns (34) are in rolling contact with the inclined surfaces of the slope blocks (25) through the rotating sleeves (35).

5. The circuit board inspection device according to claim 4, wherein: the inner side surface of the guide seat (21) is fixedly provided with a guide frame (212), and the pressing seat (24) is in sliding fit in the guide frame (212).

6. The circuit board inspection device according to claim 4, wherein: the front side of the detection table (1) is provided with a cavity (6), a screw (7) is arranged in the cavity (6) through a bearing, the end part of the detection table (1) is fixedly provided with a motor (8) which is connected with the screw (7) in a transmission way, the bottom surface of the pressing seat (24) is fixedly provided with a sealing plate (44) which is fixedly provided with a jack (45) communicated with the cavity of the detection seat (42) when the pressing seat presses the circuit board, the pressing circuit board is simultaneously electrified and started by the command motor (8), the detection mechanism (4) comprises a sliding seat (41) which is in sliding fit with the cavity (6) and the inner end of which is matched with the screw (7) through a threaded hole, a detection seat (42) which is fixedly arranged at the outer end of the sliding seat (41) and is in sliding fit with the front of the detection table (1), the detection seat (42) is a vertical pipe, the top end of the detection seat (42) is fixedly provided with a sealing plate (44), the sealing plate (44) is fixedly arranged on the top end of the detection seat (42), the jack (45) is communicated with the cavity of the detection seat (42), one end of the detection seat (45) extends out of the jack (45) through the jack (45), the screw rod (7) rotates and drives the sliding seat (41) to move synchronously with the detection seat (42) at the front end of the sliding seat when the sliding seat slides from one end to the other end of the cavity channel (6), the top end of the detection needle (43) slides from one end to the other end along the bottom surface of the circuit board, and when the detection needle (43) slides to the warping section of the circuit board, the detection needle (43) gradually rises along the warping surface track of the circuit board.

7. The circuit board inspection device according to claim 6, wherein: the bottom of detection needle (43) is equipped with can follow its lift action and simultaneously sliding fit in the instruction board (47) in detecting seat (42), detect seat (42) for the transparency, be equipped with on the high size of detecting seat (42) with instruction board (47) assorted instruction scale mark (421).

8. The circuit board inspection device according to claim 7, wherein: the detection needle (43) is a needle tube with a needle hole, the indication plate (47) is a hollow plate, the imprinting assembly (5) comprises a plurality of liquid discharge holes (51) formed in the detection needle (43) and detection liquid (52) filled in the detection seat (42) and located above the indication plate (47), the needle hole of the detection needle (43) is communicated with the detection liquid (52), and the supporting spring (46) is connected between the indication plate (47) and the bottom surface of the inner cavity of the detection seat (42).