CN216747979U

CN216747979U - PCB detects positioner

Info

Publication number: CN216747979U
Application number: CN202123296169.0U
Authority: CN
Inventors: 李夏霜; 高磊; 李体仁; 桓源; 何朝都; 赵耕伯
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-14
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a PCB detection positioning device.A first sliding rod is arranged in the middle of a support along the horizontal direction, a first positioning block and a second positioning block for fixing a PCB are arranged on the first sliding rod in a sliding manner, a vertically arranged screw rod is arranged on one side of the upper end of the support, a vertically arranged sliding rod is arranged on the other side of the upper end of the support, a cross beam is arranged between the second sliding block and the first sliding block, an adjusting sliding block is arranged on the cross beam, and a camera is fixed on the adjusting sliding block through a connecting rod; put the PCB board between two locating pieces, through twist grip, two sliders press from both sides tight PCB board under bevel gear group and rack and pinion mechanism's cooperation, realize locate function, adjust the camera position through adjusting the slider and make the camera be located directly over the PCB board, then accomplish PCB board and detect the experiment relatively, make the testing process more simple and convenient, swift, improve the detection precision by a wide margin.

Description

PCB detects positioner

Technical Field

The utility model relates to PCB detection equipment, in particular to a PCB detection positioning device.

Background

At present, the problems of electronic interconnection such as insulation failure of a printed board, fatigue failure of welding spots and the like caused by factors such as process defects, design defects and the like caused by improper process control become main reasons influencing the reliability of electronic products. Under the condition, the key point for guaranteeing the quality of the product is that the assembly reliability of the electronic product is guaranteed, and the important display significance is achieved. As a core component of an electronic product, hundreds of electronic components are distributed on the surface of an integrated circuit PCB, only if the electronic components operate correctly, the normal operation of the whole circuit can be ensured, and whether the assembly of the electronic components is correct or not directly determines whether the functions of the product can be realized or not.

At present, the existing electronic product detection mode is mainly divided into contact detection and non-contact detection, the contact detection generally refers to electrical detection, the electrical detection belongs to functional test, and can detect the defects of open circuit and short circuit, but because the detection is contact detection, in the detection process, if the damage to other electronic components in the circuit is caused because of wrong welding and missing welding of a certain electronic component, even the damage to the whole circuit is caused, huge economic loss can be brought, the waste of manpower and material resources is caused, and along with the increasingly fine and dense integrated circuit, the cost of the detection is too high, and the detection is not widely used any more. The more mainstream detection method today is non-contact detection, the most common non-contact being manual visual inspection. The PCB welding machine is suitable for use when the manpower price is low or the number of electronic components assembled on the surface of a PCB is small, along with the development of economic level and technology, the labor is gradually expensive, the printed circuit board lines are dense, the number of the welded electronic components is more and more, the PCB product is rapidly developed towards the directions of ultra-thin type, small components, high density and fine spacing, and the detection efficiency and accuracy of manual visual inspection can be reduced. Automatic Optical Inspection (AOI) is a more mainstream non-contact Inspection method, and it is a popular research direction to combine the AOI technology to quickly locate and inspect the electronic components on the surface of the soldered PCB board. The geometric specification of the PCB does not have a uniform standard, the surface electronic components are randomly distributed, if the mechanical positioning cannot be well carried out when the AOI technology is used for detection, the PCB is inclined, the AOI detection is difficult greatly, the image processing difficulty is increased, and the workload is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PCB detection positioning device which can meet the requirements of positioning and moving of PCBs with different geometric specifications, and when the AOI detection technology is used, the PCB is accurately and mechanically positioned in a region to be detected, so that the detection process is simpler, more convenient and quicker, and the detection precision is improved.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a PCB detection positioning device comprises a support, wherein a transmission shaft is transversely arranged on the support, one end of the transmission shaft is connected with a driving device, the other end of the transmission shaft is connected with a first bevel gear, a second bevel gear is fixed in the middle of the support through the transmission shaft, the second bevel gear is meshed with the first bevel gear at an angle of 90 degrees, the transmission shaft is driven to rotate through a clamping hand wheel, and the second bevel gear and the first bevel gear realize 90-degree steering transmission;

a first sliding rod is arranged in the middle of the support along the horizontal direction, a first positioning block and a second positioning block for fixing the PCB are slidably mounted on the first sliding rod, a second rack is fixed at the lower end of the second positioning block, a first rack is fixed at the lower end of the first positioning block, and the second rack and the first rack are respectively in contact engagement with the upper side and the lower side of the gear; the gear is coaxially and fixedly connected with a fourth bevel gear, the fourth bevel gear is meshed with a third bevel gear at an angle of 90 degrees, and the third bevel gear is coaxially connected with a second bevel gear;

the camera comprises a support, a first slide block, a second slide bar, a first slide block, a second slide bar, a second slide block, a connecting rod, a camera and a camera, wherein the screw rod is vertically arranged on one side of the upper end of the support, the first slide block is arranged on the screw rod, the lower end of the screw rod is connected with the fifth bevel gear, the drive bevel gear is arranged on the support through a transverse connecting shaft, the fifth bevel gear and the drive bevel gear are meshed at an angle of 90 degrees, the second slide bar is vertically arranged on the other side of the upper end of the support, the second slide bar is provided with the second slide block, a cross beam is arranged between the second slide block and the first slide block, an adjusting slide block is arranged on the cross beam, and the camera is fixed on the adjusting slide block through the connecting rod.

Furthermore, the driving device is a clamping hand wheel arranged on the support, and the transmission shaft is connected with the clamping hand wheel.

Furthermore, a handle is arranged on the support, a driving bevel gear is installed on the handle through a transverse connecting shaft, and a fifth bevel gear is meshed with a bevel gear installed on the handle at an angle of 90 degrees.

Furthermore, the lower end of the support is provided with a support leg.

Furthermore, the first positioning block and the second positioning block are of L-shaped structures, and a platform for placing a PCB is arranged on one side of the first positioning block and the second positioning block.

According to the PCB detection positioning device, during a PCB detection experiment, a PCB is placed between two positioning blocks, two sliding blocks clamp the PCB under the matching of a bevel gear set and a rack-and-pinion mechanism through rotating a handle, so that a positioning function is realized, a camera support is adjusted to move up and down to a proper position under the matching of the bevel gear set and a lead screw nut mechanism through rotating the handle, the camera is positioned right above the PCB through adjusting the position of the camera through adjusting the sliding blocks, and then the PCB related detection experiment is completed; the PCB positioning and moving device can meet the requirements of positioning and moving of PCBs with different geometric specifications, and when the AOI detection technology is used, accurate mechanical positioning of the PCBs in a region to be detected is achieved, so that the detection process is simpler, more convenient and quicker, and the detection precision is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1-bracket, 2-supporting leg, 3-transmission shaft, 4-clamping hand wheel, 5-first bevel gear, 6-second bevel gear, 7-third bevel gear, 8-fourth bevel gear, 9-gear, 10-first rack, 11-second rack, 12-first positioning block, 13-second positioning block, 14-first slide bar, 15-handle, 16-fifth bevel gear, 17-screw, 18-first slide block, 19-crossbeam, 20-camera, 21-adjusting slide block, 22-second slide block, 23-second slide bar, 24-PCB,

Detailed Description

The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.

As shown in figure 1, the PCB detection positioning device comprises a support 1, supporting legs 2 are arranged at the lower end of the support 1, a transmission shaft 3 which is transversely arranged is installed on the side face of the support 1 in a matched mode, one end of the transmission shaft 3 is connected with a clamping hand wheel 4 installed on the support 1, a first bevel gear 5 is arranged at the other end of the transmission shaft 3, a second bevel gear 6 is fixed in the middle of the support 1 through the transmission shaft, the second bevel gear 6 is meshed with the first bevel gear 5 at an angle of 90 degrees, the transmission shaft 3 is driven to rotate through the clamping hand wheel 4, and 90-degree steering transmission is achieved between the second bevel gear 6 and the first bevel gear 5, so that the second bevel gear 6 is driven to rotate.

Be provided with first slide bar 14 along the horizontal direction in support 1 middle part, slidable mounting has first locating piece 12 and second locating piece 13 on first slide bar 14, and first locating piece 12 and second locating piece 13 are used for fixed PCB board 24, first locating piece 12 and second locating piece 13 are L type structure, and one side is provided with the platform that is used for placing the PCB board. A second rack 11 is fixed at the lower end of the second positioning block 13, a first rack 10 is fixed at the lower end of the first positioning block 12, the second rack 11 and the first rack 10 are respectively in contact engagement with the upper side and the lower side of the gear 9, the gear 9 is coaxially and fixedly connected with a fourth bevel gear 8, the fourth bevel gear 8 is in 90-degree engagement with a third bevel gear 7, and the third bevel gear 7 is coaxially connected with a second bevel gear 6. Through the rotation of the second bevel gear 6, the third bevel gear 7 and the fourth bevel gear 8 which are coaxially arranged realize 90-degree steering transmission, the gear 9 which is coaxially and fixedly connected with the fourth bevel gear 8 rotates, the second racks 11 and the first racks 10 which are distributed on the upper side and the lower side of the gear 9 are driven to move in opposite directions or directions, and then the first positioning block 12 and the second positioning block 13 are driven to be suitable for the installation and fixation of the PCB boards 24 with different sizes.

The multifunctional combined type camera comprises a support 1, a screw rod 17, a first sliding block 18, a fifth bevel gear 16, a handle 15, a driving bevel gear, a transverse connecting shaft, a transverse beam 19, an adjusting sliding block 21 and a camera 20, wherein the screw rod 17 is vertically arranged on one side of the upper end of the support 1 in a matched mode, the first sliding block 18 is installed on the screw rod 17 in a matched mode, the fifth bevel gear 16 is meshed with the bevel gear installed on the handle 15, a second sliding rod 23 which is vertically installed is arranged on the other side of the upper end of the support 1, the second sliding rod 23 is provided with the second sliding block 22 in a matched mode, the transverse beam 19 is installed between the second sliding block 22 and the first sliding block 18, the adjusting sliding block 21 is provided with the camera 20 through the connecting rod. The camera 20 is located above the plane where the first positioning block 12 and the second positioning block 13 are located, the handle 15 drives the fifth bevel gear 16 to rotate, the screw rod 17 is further driven to rotate, the second slider 22 and the first slider of the supporting beam 19 move up and down, the height adjustment of the camera 20 is achieved, and the horizontal position adjustment of the camera 20 is achieved by the movement of the adjusting slider 21 on the beam 19.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a PCB detects positioner which characterized in that: the steering transmission device comprises a support (1), wherein a transmission shaft (3) is transversely arranged on the support (1), one end of the transmission shaft (3) is connected with a driving device, the other end of the transmission shaft (3) is connected with a first bevel gear (5), a second bevel gear (6) is fixed in the middle of the support (1) through the transmission shaft, the second bevel gear (6) is meshed with the first bevel gear (5) at an angle of 90 degrees, the transmission shaft (3) is driven to rotate through a clamping hand wheel (4), and the second bevel gear (6) and the first bevel gear (5) realize steering transmission at an angle of 90 degrees;

a first sliding rod (14) is arranged in the middle of the support (1) along the horizontal direction, a first positioning block (12) and a second positioning block (13) for fixing a PCB (24) are slidably mounted on the first sliding rod (14), a second rack (11) is fixed at the lower end of the second positioning block (13), a first rack (10) is fixed at the lower end of the first positioning block (12), and the second rack (11) and the first rack (10) are respectively in contact engagement with the upper side and the lower side of the gear (9); the gear (9) is coaxially and fixedly connected with a fourth bevel gear (8), the fourth bevel gear (8) is meshed with a third bevel gear (7) at an angle of 90 degrees, and the third bevel gear (7) is coaxially connected with a second bevel gear (6);

install screw rod (17) of vertical setting on one side of support (1) upper end, first slider (18) are installed in screw rod (17), and screw rod (17) lower extreme is connected with fifth bevel gear (16), installs drive bevel gear through the transverse connection axle on support (1), and fifth bevel gear (16) become the angle of 90 degrees with drive bevel gear and mesh, are equipped with second slide bar (23) of vertical installation on support (1) upper end opposite side, second slide bar (23) on be equipped with second slider (22), install crossbeam (19) between second slider (22) and first slider (18), be equipped with adjusting block (21) on crossbeam (19), be fixed with camera (20) through the connecting rod on adjusting block (21).

2. The PCB test positioning device of claim 1, wherein: the driving device is a clamping hand wheel (4) arranged on the support (1), and the transmission shaft (3) is connected with the clamping hand wheel (4).

3. A PCB inspection positioning device as claimed in claim 1 or 2, wherein: the handle (15) is arranged on the support (1), the driving bevel gear is installed on the handle (15) through the transverse connecting shaft, and the fifth bevel gear (16) is meshed with the bevel gear installed on the handle (15) at an angle of 90 degrees.

4. The PCB test positioning device of claim 3, wherein: the lower end of the support (1) is provided with a support leg (2).

5. The PCB test positioning device of claim 3, wherein: the first positioning block (12) and the second positioning block (13) are of L-shaped structures, and a platform for placing a PCB is arranged on one side of the first positioning block.