CN219161239U

CN219161239U - Be used for PCB board tortuosity testing platform and detecting system

Info

Publication number: CN219161239U
Application number: CN202223495487.4U
Authority: CN
Inventors: 蒋刘; 曹振羽; 吕锦生
Original assignee: Wuxi Yubo Technology Co ltd
Current assignee: Wuxi Yubo Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-09
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a detection platform and a detection system for the torsion degree of a PCB, comprising the following steps: a work table; four positioning frames; the three groups of positioning parts are arranged on the three positioning frames and used for limiting and fixing three corners of the PCB in the positioning frames; a set of measuring parts. According to the utility model, the four positioning frames, the three groups of positioning parts and the one group of measuring parts are arranged in the working area of the workbench, the PCB is sequentially inserted into the four positioning frames, then the three groups of positioning parts are utilized to limit and fix the triangles of the PCB in the positioning frames to the same horizontal plane, then the measuring parts are utilized to measure the warp height of the unfixed corners of the PCB, the warp value of the PCB is obtained, and an operator judges whether the PCB is qualified or not according to the warp value of the PCB. The triangle of the PCB is not required to be manually limited, the warping degree of the PCB is not identified by human eyes, and the accuracy and convenience in detecting the warping degree of the PCB are ensured.

Description

Be used for PCB board tortuosity testing platform and detecting system

Technical Field

The utility model relates to the technical field of PCB (printed circuit board), in particular to a PCB torsion degree detection platform and a PCB torsion degree detection system.

Background

The problem of PCB distortion is a problem that often occurs in SMT mass production. The reasons for this mainly include: the PCB itself is improperly selected, especially the paper-based PCB, and the PCB is distorted due to the too high processing temperature; the design of the PCB is unreasonable, the components are unevenly distributed, the thermal stress of the PCB is overlarge, and the expansion and the shrinkage of the PCB are affected by the connector and the socket with larger appearance, and even permanent distortion occurs; if the copper foil on one side of the double-sided PCB is too large (such as a ground wire) and the copper foil on the other side is too small, the shrinkage on the two sides is uneven and deformation occurs; too high a temperature in reflow soldering can also cause PCB board warpage.

Therefore, after the PCB board is processed, it is necessary to detect its own overall board shape, and then determine whether it can be further processed later. At present, the torsion degree of the PCB is detected by manually limiting the triangle of the PCB, and then observing the tilting height of the unfixed corner through human eyes, but the detection result is poor easily due to the manual observation, so that the accuracy of the detection result of the PCB is affected.

Disclosure of Invention

The utility model aims to solve the defect of poor torsion degree detection result of a PCB in the prior art, and provides a PCB torsion degree detection platform.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the first aspect of the present utility model provides a platform for detecting torsion of a PCB board, comprising:

the workbench is square, and a square working area is arranged on the workbench;

the four positioning frames are arranged on the workbench, are distributed in a rectangular array in the working area, are -shaped, are close to each other and are used for bearing and positioning the PCB;

the three groups of positioning parts are arranged on the three positioning frames and used for limiting and fixing three corners of the PCB in the positioning frames;

the measuring parts are arranged on the other locating frame and used for measuring the warping height of the other corner of the PCB.

In some possible embodiments, the measuring section includes:

the ranging probe is arranged inside the opening of the positioning frame and is opposite to the opening of the positioning frame, so that the ranging probe can conveniently detect the warping height of the PCB;

the range finder, the range finder with the range finding probe electrical property links to each other, the range finder set up in on the locating frame, just the range finder is located and keeps away from the opening part of locating frame, the range finder is used for the feedback output range finding probe's range finding result.

In some possible embodiments, the rangefinder is an infrared rangefinder.

In some possible embodiments, the positioning portion includes:

the pump body is arranged on the positioning frame, and an output push rod of the pump body penetrates through the positioning frame and extends into an opening of the positioning frame;

the positioning plate is arranged in the opening of the positioning frame and is connected with one end of the output push rod;

the connecting pipe is arranged on the pump body and used for providing power for the pump body.

In some possible embodiments, the pump body is a hydraulic pump or an air pump.

In some possible embodiments, the locating plate is a rubber pad.

In some possible embodiments, the workbench is provided with two translation sliding grooves and one inclined sliding groove on a working area, one positioning frame is fixedly connected with the workbench, and the measuring part is arranged on the positioning frame;

the extension lines of the two translation sliding grooves are intersected with the measuring part, the two positioning frames are connected with the two translation sliding grooves in a sliding manner, and the two positioning frames are perpendicular to each other in the moving direction of the two translation sliding grooves;

the inclined pull sliding chute is obliquely arranged on the workbench, the extension line of the inclined pull sliding chute is used as the angular bisector of the two translation sliding chutes, one locating frame is connected in the inclined pull sliding groove in a sliding mode, and one locating frame connected with the inclined pull sliding groove in a sliding mode is arranged in a diagonal mode with the measuring portion.

In some possible embodiments, three positioning frames provided with positioning portions perform centripetal movement around the positioning frame on which the measuring portion is mounted.

The second aspect of the utility model provides a system for detecting the torsion degree of a PCB, which adopts the platform for detecting the torsion degree of the PCB according to any one of the first aspect.

The beneficial effects of the utility model are as follows:

according to the embodiment of the utility model, four positioning frames, three groups of positioning parts and one group of measuring parts are arranged in the working area of the workbench, the PCB is sequentially inserted into the four positioning frames, then three groups of positioning parts are utilized to limit and fix the triangle of the PCB in the positioning frames to the same horizontal plane, then the measuring parts are utilized to measure the warp height of one unfixed corner of the PCB, the warp value of the PCB is obtained, and an operator judges whether the PCB is qualified or not according to the obtained warp value of the PCB. The triangle of the PCB is not required to be manually limited, the warping degree of the PCB is not identified by human eyes, and the accuracy and convenience in detecting the warping degree of the PCB are ensured. Namely, the defect of poor torsion resistance detection result of the PCB in the prior art is effectively overcome.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a PCB board torsion detecting platform according to an embodiment of the present utility model;

fig. 2 is a schematic plan view (front view direction) of a structure of a PCB board torsion detecting platform according to an embodiment of the present utility model.

The labels in the figures are as follows:

1. a work table; 11. a working area; 12. translating the chute; 13. a diagonal chute;

2. a positioning frame; 21. a range finder; 211. a ranging probe; 22. a pump body; 221. a connecting pipe; 222. and (5) positioning the plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; "coupled" may be mechanical or electrical; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Example 1

Referring to fig. 1-2, a PCB board torsion degree detection platform, the detection platform comprising: the device comprises a workbench 1, four positioning frames 2, three groups of positioning parts and one group of measuring parts. The workbench 1 is square, and a square working area 11 is arranged on the workbench 1. Four positioning frames 2 set up in on the workstation 1, and four positioning frames 2 are in work area 11 is rectangular array and distributes, positioning frame 2 is shape, four the opening of positioning frame 2 is close to each other, positioning frame 2 is used for bearing the location PCB board. The three groups of positioning parts are arranged on the three positioning frames 2 and used for limiting and fixing three corners of the PCB in the positioning frames 2. The measuring parts are arranged on the other locating frame 2, and the measuring parts are used for measuring the warping height of the other corner of the PCB. In this embodiment, through being provided with four locating frames 2, three sets of location portions and a set of measuring part in the work area 11 of workstation 1, alternate the PCB board in proper order and put into four locating frames 2, then utilize three sets of location portions to carry out spacing fixed to same horizontal plane with the triangle of PCB board in locating frame 2, then utilize measuring part to carry out the measurement to the unfixed angle of PCB board and warp the height, obtain the warp degree value of PCB board, operating personnel judges whether the PCB board is qualified according to the warp degree value of PCB board that obtains. The triangle of the PCB is not required to be manually limited, the warping degree of the PCB is not identified by human eyes, and the accuracy and convenience in detecting the warping degree of the PCB are ensured. Namely, the defect of poor torsion resistance detection result of the PCB in the prior art is effectively overcome.

In this embodiment, the measuring section includes: a rangefinder 21 and a rangefinder probe 211. The ranging probe 211 is arranged inside the opening of the positioning frame 2, and the ranging probe 211 and the opening of the positioning frame 2 are arranged oppositely, so that the ranging probe 211 can detect the warping height of the PCB. The range finder 21 is electrically connected with the range finder probe 211, the range finder 21 is arranged on the positioning frame 2, the range finder 21 is positioned at an opening far away from the positioning frame 2, and the range finder 21 is used for feeding back and outputting a range finding result of the range finder probe 211. In this embodiment, when the warp height measurement is performed on an unfixed corner of the PCB, the ranging probe 211 sends a detection signal to the position of the maximum warp height of the PCB, and then the range finder 21 obtains the detection signal and performs feedback to output a height value corresponding to the detection signal. Preferably, the distance meter 21 is an infrared distance meter 21, a plurality of infrared emitters with different heights are arranged on the distance measuring probe 211, the detection height value of each infrared emitter is recorded correspondingly in the infrared distance meter 21, at this time, the plurality of infrared emitters detect the warpage height of the PCB, and the infrared distance meter 21 receives the infrared rays which are fed back fastest as the propagation speed of the infrared rays in the air is the same, and the value recorded correspondingly for the received infrared rays is searched for as the warpage height of the PCB. The accuracy of detecting the warping height of the PCB is guaranteed.

In this embodiment, three positioning portions are respectively connected to three positioning frames 2, and for convenience of description, the positioning portions will be described in detail with a configuration of one positioning portion. Specifically, the positioning portion includes: pump body 22, connecting tube 221 and positioning plate 222. The pump body 22 is disposed on the positioning frame 2, and an output push rod (not shown in the drawing) of the pump body 22 penetrates through the positioning frame 2 and extends into the opening of the positioning frame 2. The positioning plate 222 is disposed inside the opening of the positioning frame 2, and the positioning plate 222 is connected to one end of the output push rod. The connecting pipe 221 is disposed on the pump body 22, and the connecting pipe 221 is used for providing power for the pump body 22. In this embodiment, the connecting tube 221 provides power for the movement of the pump body 22, so that the output push rod of the pump body 22 pushes the positioning plate 222 to limit and fix the PCB inside the positioning frame 2. In this embodiment, the pump body 22 may be a hydraulic pump or an air pump.

In an alternative embodiment, in order to prevent the positioning plate 222 from damaging the surface of the PCB during the positioning and fixing process, the bottom end of the positioning plate 222 is an elastic pad (not shown in the figure). Preferably, the positioning plate 222 is a rubber pad.

Example two

In this embodiment, in order to facilitate torsion detection of PCB boards of various sizes, the working area 11 of the working table 1 is provided with two translation sliding grooves 12 and one oblique sliding groove 13, one positioning frame 2 is fixedly connected with the working table 1, and the positioning frame 2 is provided with a measuring portion. The extension lines of the two translation sliding grooves 12 are intersected with the measuring part, the two positioning frames 2 are connected with the two translation sliding grooves 12 in a sliding mode, and the two positioning frames 2 are perpendicular to each other in the moving direction of the two translation sliding grooves 12. The oblique pulling sliding groove 13 is obliquely arranged on the workbench 1, an extension line of the oblique pulling sliding groove 13 serves as an angular bisector of the two translation sliding grooves 12, one positioning frame 2 is slidably connected in the oblique pulling sliding groove 13, and one positioning frame 2 slidably connected with the oblique pulling sliding groove 13 is arranged in a diagonal manner with the measuring part. Namely, three positioning frames 2 provided with positioning parts can perform centripetal movement by taking the positioning frame 2 provided with the measuring parts as the circle center, so that the four positioning frames 2 are adjusted to perform warping height measurement on PCB boards with different sizes. The remainder was the same as in example one.

Example III

The utility model also provides a PCB torsion detecting system in the embodiment, the detecting system adopts a PCB torsion detecting platform in the first embodiment or the second embodiment, and the detecting system also comprises: the power device is connected with the pump body 22, and is used for providing power for the pump body 22 through the connecting pipe 221, and the power device can be selected according to the type of the pump body 22, and can be: hydraulic oil tank or air source.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. Be used for PCB board tortuosity testing platform, its characterized in that includes:

2. The platform for PCB board torsion detection according to claim 1, wherein the measuring part includes:

3. The platform for PCB board torsion detection according to claim 2, wherein the rangefinder is an infrared rangefinder.

4. The platform for PCB board torsion detection of claim 1, wherein the positioning portion includes:

5. The platform for PCB board torsion detection of claim 4, wherein the pump body is a hydraulic pump or an air pump.

6. The platform of claim 5, wherein the positioning plate is a rubber pad.

7. The platform for detecting torsion degree of a PCB board according to any one of claims 1 to 6, wherein the working area of the platform is provided with two translation sliding grooves and one oblique sliding groove, one positioning frame is fixedly connected with the working platform, and the measuring part is arranged on the positioning frame;

8. The platform for detecting torsion degree of a PCB board according to claim 7, wherein three positioning frames provided with positioning portions perform centripetal movement with the positioning frame provided with the measuring portion as a center of a circle.

9. A system for detecting torsion of a PCB board, characterized in that a platform for detecting torsion of a PCB board according to any one of claims 1-8 is used.