CN221575719U - Automatic device of overhauling of PCBA board - Google Patents

Abstract

The utility model discloses an automatic overhaul device for a PCBA board, which comprises: the device comprises an overhaul stand, a control mechanism, an identification mechanism and a projection mechanism, wherein the control mechanism, the identification mechanism and the projection mechanism are arranged in the overhaul stand, and the identification mechanism and the projection mechanism are connected with the control mechanism; the projection mechanism is arranged above the overhaul stand; the control mechanism is used for receiving ID information of the PCBA to be overhauled and at least one coordinate of the point to be overhauled; the identifying mechanism is used for acquiring ID information for identifying the PCBA to be overhauled; and the projection mechanism is used for projecting coordinates of each point to be overhauled onto the PCBA board to be overhauled according to the ID information acquired by the identification mechanism. The PCBA board to be overhauled can be marked with coordinates of points to be overhauled directly through the control mechanism, the identification mechanism and the projection mechanism, so that the PCBA board to be overhauled can be overhauled on an overhauling table directly by manpower, the positions of the identification mechanism and the projection mechanism can be changed, the PCBA board to be overhauled with different sizes can be overhauled conveniently, and the PCBA board to be overhauled has strong adaptability and high overhauling efficiency.

Description

Automatic device of overhauling of PCBA board

Technical Field

The utility model relates to the technical field of PCBA board overhaul, in particular to an automatic PCBA board overhaul device.

Background

PCBA boards, also known as finished circuit boards, are one of the key components of electronic devices, and are now widely used in various fields. The production process of the PCBA board depends on the surface mounting technology, and the welding precision of the surface mounting technology is high, but the problems of multiple tin, cold joint, tin tip, missing welding and the like still exist.

In order to improve production efficiency, the existing PCBA board can utilize optical detection equipment to detect the PCBA board after welding is finished, so that good products and defective products are distinguished. The yields can be sent to next processing procedure, and the defective products then can be sent to the maintenance platform to carry out unified maintenance, have accelerated the detection speed of PCBA board by a wide margin. However, after the PCBA board is sent to the inspection station, the operator may also use the magnifying glass or the naked eye again to find the bad solder joint, and then repair the bad solder joint. The maintenance mode is not only low in efficiency, but also easy to produce the condition of missing maintenance.

In the process of implementing the present utility model, the inventor finds that at least the following problems exist in the prior art:

The existing maintenance platform is low in efficiency and easy to miss when detecting and repairing the PCBA board.

Disclosure of utility model

The utility model aims to provide an automatic overhaul device for a PCBA (printed Circuit Board Assembly) board, which aims to solve the technical problem of lower efficiency in the detection and repair of the PCBA board in the prior art. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

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

The utility model provides an automatic overhaul device for a PCBA board, which comprises the following components: the device comprises an overhaul stand, a control mechanism, an identification mechanism and a projection mechanism, wherein the control mechanism, the identification mechanism and the projection mechanism are arranged in the overhaul stand, and the identification mechanism and the projection mechanism are connected with the control mechanism; the projection mechanism is arranged above the overhaul stand and is a projector or a D-structure light module;

The control mechanism is used for receiving ID information of the PCBA to be overhauled and at least one coordinate of the point to be overhauled;

The identification mechanism is used for acquiring ID information for identifying the PCBA to be overhauled and sending the ID information to the control mechanism;

the projection mechanism is used for projecting coordinates of each point to be overhauled corresponding to the ID information provided by the control mechanism onto the PCBA to be overhauled according to the ID information acquired and identified by the identification mechanism.

As an optional implementation mode, the projection mechanism is vertically arranged downwards opposite to the PCBA board to be overhauled, and the projection mechanism is a projector or a D-structure light module.

As an optional implementation mode, the projection mechanism and the PCBA board to be overhauled are arranged in a staggered mode, and the projection mechanism is a short-focus projector or a medium-focus projector.

As an optional implementation manner, the identifying mechanism is a shooting device and is used for shooting and identifying the ID information and the locating point coordinates of the PCBA board to be overhauled;

the control mechanism controls the projection mechanism to project each point coordinate to be overhauled onto the PCBA to be overhauled according to the ID information and the locating point coordinates of the PCBA to be overhauled;

The projection mode of the projection mechanism is single-point projection, multi-point projection or cyclic projection.

As an alternative embodiment, the maintenance platform comprises a placing platform and a workbench, wherein the placing platform and the workbench are arranged in a step shape;

The workbench is used for placing the PCBA to be overhauled;

the workbench is a workbench which is horizontally placed, a workbench which is obliquely placed or an automatic assembly line.

As an optional embodiment, the overhauling device further comprises a positioning mechanism, wherein the positioning mechanism is arranged on the front side of the placing table through an adjusting structure, and the lower part of the positioning mechanism is tightly attached to the workbench; the positioning mechanism is used for positioning the PCBA to be overhauled.

As an alternative embodiment, a containing cavity is arranged inside the placing table, and the containing cavity is used for placing a welding tool;

the side of the placing table is provided with an on-off button and a control button.

As an optional embodiment, the maintenance platform further comprises a side plate, and the side plate is fixedly connected with the workbench;

The side plates are provided with moving grooves, the identification mechanisms are connected with the moving grooves through sliding blocks, and the identification mechanisms can move in the moving grooves.

As an optional implementation manner, a plurality of through holes are formed in two sides of the movement groove, and the identification mechanism is fixed on the through holes after moving to a designated position in the movement groove.

As an optional implementation manner, the overhauling device further comprises a display mechanism, wherein the display mechanism is connected with the control mechanism and is used for displaying coordinates of points to be overhauled of the PCBA board to be overhauled.

By implementing one of the technical schemes, the utility model has the following advantages or beneficial effects:

The PCBA board to be overhauled can directly mark the coordinates of the points to be overhauled through the control mechanism, the identification mechanism and the projection mechanism, is convenient for being overhauled on an overhauling table by manpower, and the positions of the identification mechanism and the projection mechanism can be changed, so that the PCBA board to be overhauled with different sizes can be overhauled conveniently, and the PCBA board to be overhauled has stronger adaptability and higher overhauling efficiency.

Drawings

For a clearer description of the technical solutions of embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, in which:

FIG. 1 is a schematic view of a first perspective of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a second perspective of the overall structure of an embodiment of the present utility model;

Fig. 3 is a schematic view of the projection mechanism disposed on the side plate according to the embodiment of the present utility model.

In the figure: 1. an overhaul stand; 11. a placement table; 111. a power on/off button; 112. a control button; 12. a work table; 13. a side plate; 14. a placement cavity; 15. a support frame; 16. a heat radiation hole; 17. a top plate; 2. an identification mechanism; 21. identifying a head; 22. a base; 3. a projection mechanism; 4. a positioning mechanism; 41. an adjustment structure; 5. a display mechanism; 6. and an air exhausting mechanism.

Detailed Description

For a better understanding of the objects, technical solutions and advantages of the present utility model, reference should be made to the various exemplary embodiments described hereinafter with reference to the accompanying drawings, which form a part hereof, and in which are described various exemplary embodiments which may be employed in practicing the present utility model. The same reference numbers in different drawings identify the same or similar elements unless expressly stated otherwise. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatuses, etc. that are consistent with certain aspects of the present disclosure as detailed in the appended claims, other embodiments may be utilized, or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present disclosure.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," and the like are used in an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and to simplify the description, rather than to indicate or imply that the elements referred to must have a particular orientation, be constructed and operate in a particular orientation. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" means two or more. The terms "connected," "coupled" and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, communicatively connected, directly connected, indirectly connected via intermediaries, or may be in communication with each other between two elements or in an interaction relationship between the two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. 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 order to illustrate the technical solutions of the present utility model, the following description is made by specific embodiments, only the portions related to the embodiments of the present utility model are shown.

Examples:

1-2, the utility model provides an automatic overhaul device for a PCBA board, which comprises: the device comprises an overhaul stand 1, a control mechanism, an identification mechanism 2 and a projection mechanism 3, wherein the control mechanism, the identification mechanism 2 and the projection mechanism 3 are arranged in the overhaul stand 1, and the identification mechanism 2 and the projection mechanism 3 are connected with the control mechanism; the projection mechanism 3 is arranged above the overhaul stand 1, and the projection mechanism 3 is a projector or a 3D structure light module; the control mechanism is used for receiving ID information of the PCBA to be overhauled and at least one coordinate of the point to be overhauled; the identification mechanism 2 is used for acquiring ID information for identifying the PCBA to be overhauled and sending the ID information to the control mechanism; the projection mechanism 3 is used for projecting each coordinate of the point to be overhauled corresponding to the ID information provided by the control mechanism onto the PCBA board to be overhauled according to the ID information acquired by the identification mechanism 2, so that each coordinate of the point to be overhauled is highlighted on the PCBA board to be overhauled, and the maintenance personnel can overhaul conveniently.

Specifically, the PCBA board to be overhauled is placed on the overhauling table 1, the identification mechanism 2 arranged above the overhauling table 1 can acquire the ID information of the PCBA board to be overhauled, and the corresponding PCBA board to be overhauled is identified through the control mechanism after the ID information is acquired, and coordinates (at least one) of all points to be overhauled corresponding to the PCBA board to be overhauled are called out. And then, at least one coordinate of the point to be overhauled is projected through the projection mechanism 3 and projected onto the PCBA board to be overhauled, each coordinate of the point to be overhauled is projected through the projection mechanism 3, and then, components corresponding to the coordinate of the point to be overhauled can be maintained, so that the overhauling efficiency is improved. In addition, the projection means 3 has different projection modes for projecting the defective position of the PCBA board, for example: single-point projection, multi-point simultaneous projection, cyclic projection, and the like, are not particularly limited in this embodiment. Different light rays are simultaneously emitted to project the defect positions or the defect positions are sequentially projected. The control means may be a computer or the like.

The projection mechanism 3 in this embodiment is a projector or a 3D structured light module. If the projection mechanism 3 is a projector, the projector correspondingly projects on the PCBA board to be overhauled after receiving the coordinates of the point to be overhauled transmitted by the control mechanism. If the projection mechanism 3 is a 3D structured light module, the 3D structured light module transmits the coordinates of the point to be inspected through the laser generator after receiving the coordinates of the point to be inspected. Structured light, as its name implies, is a special light source, which is generally divided into three types: discrete spots, bar light, and coded structured light. During operation, the light spots subjected to specific coding are projected onto the PCBA board to be overhauled from the 3D mechanism optical module, and then each coordinate of the point to be overhauled is highlighted on the PCBA board to be overhauled, so that maintenance personnel can overhaul conveniently. Before use, the projection mechanism 3 can adjust the position according to the PCBA board to be inspected and repaired, so as to ensure the correct projection of the projection mechanism 3.

As an alternative embodiment, the projection means 3 are provided in two different arrangements. As shown in fig. 1, the first is that the projection mechanism 3 is vertically downward and rightly arranged on a PCBA board to be overhauled, when the projection mechanism 3 is right opposite to the PCBA board to be overhauled, the projection mechanism 3 is arranged in the placing cavity 14 at the top of the overhauling table 1, the top of the overhauling table 1 is right opposite to the lower PCBA board to be overhauled, light can be conveniently downward projected, and the accuracy of projection is ensured. Because the projection mechanism 3 can generate heat in the projection process, in order to ensure the normal use of the projection mechanism 3, the top of the overhaul stand 1 is provided with the heat dissipation holes 16, so that the heat generated by the projection mechanism 3 in the projection process is dissipated outwards, and the normal operation of the projection mechanism 3 is ensured.

In addition, as shown in fig. 2, the projection mechanism 3 can be further arranged on the support frame 15 at the top of the overhaul stand 1, and the projection mechanism 3 can move on the support frame 15, so that the PCBA board to be overhauled placed on the overhaul stand 1 can be aligned conveniently, and the accuracy of the projected point coordinates to be overhauled is further ensured. The projection mechanism 3 is a projector or a 3D structured light module.

As shown in fig. 3, the second type is that the projection mechanism 3 is arranged in a dislocation manner with the PCBA board to be overhauled, and the projection mechanism 3 is arranged on the side plate and used for projecting coordinates of the point to be overhauled. With the projection mechanism 3 set in this way, the recognition mechanism 2 is provided on the top plate 17 connected to the side plate 13, facing the PCBA board placed on the table 12, for acquiring the ID information of the PCBA board. The setting position of the projection mechanism 3 can not shelter from the identification mechanism 2, the projection mechanism 3 and the identification mechanism 2 can not interfere with each other, the identification mechanism 2 can normally acquire information, and the projection mechanism 3 can accurately project coordinates of a point to be overhauled.

The projection mechanism 3 is a short-focus projector or a medium-focus projector, and the use of the short-focus projector or the medium-focus projector is specifically selected according to the actual situation.

As an optional implementation manner, the identifying mechanism 2 is a shooting device, and is used for shooting and identifying the ID information and the locating point coordinates of the PCBA board to be overhauled; the control mechanism controls the projection mechanism 3 to project each coordinate of the point to be overhauled onto the PCBA board to be overhauled according to the ID information and the coordinates of the locating point of the PCBA board to be overhauled.

Specifically, the identifying mechanism 2 is mainly used for acquiring ID information of the PCBA board to be overhauled, shooting a picture of the PCBA board to be overhauled and positioning points on the PCBA board to be overhauled, so that the PCBA board to be overhauled is conveniently positioned and fixed without additional positioning mechanisms. Meanwhile, the coordinate of the point to be overhauled, which is needed to be overhauled, is identified by a follow-up control mechanism, and the follow-up projection is facilitated. The recognition mechanism 2 is a camera or a code scanner.

As an alternative embodiment, as shown in fig. 1-2, the maintenance platform 1 comprises a placing platform 11 and a workbench 12, wherein the placing platform 11 and the workbench 12 are arranged in a stepped manner; the table 12 is used for placing PCBA boards to be inspected. The arrangement of the placement table 11 and the work table 12 facilitates placement of the PCBA board to be inspected and overhauled, and the placement of the PCBA board on the work table 12 facilitates projection by the projection mechanism 3 arranged above the inspection table 1.

The overhauling device further comprises a positioning mechanism 4, as shown in fig. 1, the positioning mechanism 4 is arranged on the front side of the placing table 11 through an adjusting structure 41, and the lower part of the positioning mechanism 4 is clung to the workbench 12 for positioning the PCBA board to be overhauled. Specifically, positioning mechanism 4 accessible adjustment structure 41 carries out the position movement on maintenance platform 1, can fix a position the PCBA board that treats that the size is different, adapt to the PCBA board that treats that the size is different, and can also be convenient for correspond with recognition mechanism 2 and projection mechanism 3, further guarantee to treat the PCBA board that overhauls and discern or the projected accuracy, and when the PCBA board that the staff treated overhauls, guarantee that the PCBA board is fixed on workstation 12, other maintenance point coordinates that prevent to throw mechanism 3 are because the position is not fixed appear the offset when overhauling, thereby improve maintenance efficiency.

It should be noted that, setting the positioning mechanism to fix the PCBA board to be overhauled is the optimal choice of this embodiment. Of course, other ways of securing the PCBA board to be serviced are possible. For example: after the shooting device shoots the locating point coordinates, the PCBA board to be overhauled can be positioned and fixed, an additional PCBA board fixing mechanism is not required to be added, and the structure is simpler.

It should be noted that, the setting of the workbench 12 is the optimal choice in the present embodiment, and in the actual operation process, the workbench may be placed horizontally, may be placed obliquely, or may be a pipeline. Specifically, the method is selected according to actual conditions.

As an alternative embodiment, the placement table 11 is internally provided with a receiving cavity (not shown in the figure) for placing a welding tool; the side of the placement table 11 is provided with an on-off button 111 and a control button 112. Specifically, the on-off button 111 and the control button 112 are electrically connected to the control mechanism. The placement table 11 is internally provided with a housing chamber for housing a tool. The on-off button 111 on the side of the placement table 11 is used for controlling the on-off of the maintenance device, and the control button 112 is used for controlling the starting of the maintenance device.

As an alternative embodiment, as shown in fig. 2, the maintenance platform 1 further comprises a side plate 13, the control mechanism is arranged inside the side plate, and the side plate 13 is fixedly connected with the workbench 12; the side plate 13 is provided with a movement groove (not shown), and the identification mechanism 2 is connected to the movement groove via a slider, so that the identification mechanism 2 can be moved in position in the movement groove. A plurality of through holes are formed in two sides of the movement groove, and the identification mechanism 2 moves to a designated position in the movement groove and then is fixed on the through holes.

Specifically, the lower side of the side plate 13 is connected to the table 12, the upper side of the side plate 13 is connected to the placement chamber 14 or the support frame 15, the recognition mechanism 2 is connected to the side plate 13, the control mechanism setting and positioning mechanism 4 is disposed below the side plate 13, and the projection mechanism 3 is disposed above the side plate 13. The middle upper part of the side plate 13 is provided with a longitudinally arranged moving groove, the bottom of the identification mechanism 2 is provided with a sliding block, and the identification mechanism 2 can move longitudinally on the side plate 13 through the fixed connection of the sliding block and the moving groove. And the both sides of motion groove are provided with a plurality of through-holes that are used for fixing identification mechanism 2, after identification mechanism 2 removes to appointed height, can use the screw to fix identification mechanism 2 and curb plate 13, shoot the discernment to the PCBA board of waiting to overhaul of placing on workstation 12.

In addition, as shown in fig. 2, the recognition mechanism 2 further includes a recognition head 21 and a base 22, the base 22 is fixedly connected with the slider, the recognition head 21 is movably connected with the base 22, the recognition head 21 can be broken off from the base 22, and the position of the recognition head 21 is converted, so that the PCBA boards to be detected with different sizes can be conveniently shot.

Because overhaul device can overhaul the PCBA board that waits to detect of equidimension, the setting in motion groove just can make the discernment structure carry out the adjustment of height according to the size of waiting to detect the PCBA board, can wait to detect the PCBA board shoot, makes the information of waiting to detect that it obtained more comprehensive, guarantees to overhaul the quality.

As an alternative embodiment, the overhauling device further comprises a display mechanism 5, wherein the display mechanism 5 is connected with the control mechanism and is used for displaying coordinates of points to be overhauled of the PCBA board to be overhauled. Specifically, the display mechanism 5 is arranged on the side plate 13 and connected with the control mechanism, and can show the coordinates of points to be overhauled of the PCBA board to be overhauled, and the display mechanism is combined with the projection mechanism 3, so that workers can conveniently watch the coordinates of the points to be overhauled of the PCBA board to be overhauled, and the overhauling efficiency and the overhauling quality are guaranteed together. A mouse for enabling operation on the display mechanism 5 may also be provided in the present embodiment.

As an alternative embodiment, as shown in fig. 1-2, the overhauling device further comprises an air exhausting mechanism 6, and the air exhausting mechanism 6 is arranged on the overhauling table 1 and is used for exhausting smoke generated by the PCBA board to be overhauled during overhauling. Specifically, the air draft mechanism 6 is arranged at the front side of the placing table 11, and smoke generated in the welding process is extracted through the air draft mechanism 6, so that a worker can conveniently overhaul the PCBA board to be overhauled. The smoke drawn by the air suction mechanism 6 is discharged from the smoke discharge hole at the rear of the side plate 13 through the smoke discharge pipe.

According to the utility model, the PCBA board to be overhauled can directly mark the coordinates of the points to be overhauled through the control mechanism, the identification mechanism 2 and the projection mechanism 3, so that the overhaul is conveniently and directly performed on the overhaul stand 1 by manpower, and the positions of the identification mechanism 2 and the projection mechanism 3 can be changed, so that the PCBA boards to be overhauled with different sizes can be overhauled conveniently, and the PCBA board to be overhauled has stronger adaptability and higher overhaul efficiency.

The embodiment is a specific example only and does not suggest one such implementation of the utility model.

The foregoing is only illustrative of the preferred embodiments of the utility model, and it will be appreciated by those skilled in the art that various changes in the features and embodiments may be made and equivalents may be substituted without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. Automatic overhaul device of PCBA board, its characterized in that includes: the device comprises an overhaul stand (1), a control mechanism, an identification mechanism (2) and a projection mechanism (3) which are arranged in the overhaul stand (1), wherein the identification mechanism (2) and the projection mechanism (3) are connected with the control mechanism; the projection mechanism (3) is arranged above the overhaul stand (1), and the projection mechanism (3) is a projector or a 3D structure light module;

The control mechanism is used for receiving ID information of the PCBA to be overhauled and at least one coordinate of the point to be overhauled;

The identification mechanism (2) is used for acquiring ID information for identifying the PCBA to be overhauled and sending the ID information to the control mechanism;

The projection mechanism (3) is used for projecting each coordinate of the point to be overhauled corresponding to the ID information provided by the control mechanism onto the PCBA to be overhauled according to the ID information acquired and identified by the identification mechanism (2).

2. The automatic PCBA board maintenance device according to claim 1, characterized in that the projection mechanism (3) is vertically downward facing to the PCBA board to be maintained, and the projection mechanism (3) is a projector or a 3D structured light module.

3. The automatic PCBA board maintenance device according to claim 1, characterized in that the projection mechanism (3) is arranged in a dislocation manner with the PCBA board to be maintained, and the projection mechanism (3) is a short-focus projector or a medium-focus projector.

4. The automatic PCBA board maintenance device according to claim 1, characterized in that the identification means (2) is a shooting device for shooting ID information and positioning point coordinates for identifying the PCBA board to be maintained;

The control mechanism controls the projection mechanism (3) to project each coordinate of a point to be overhauled onto the PCBA to be overhauled according to the ID information and the coordinates of the locating point of the PCBA to be overhauled;

the projection mode of the projection mechanism (3) is single-point projection, multi-point projection or cyclic projection.

5. The automatic overhaul device for the PCBA board according to claim 1, wherein the overhaul stand (1) comprises a placement stand (11) and a workbench (12), and the placement stand (11) and the workbench (12) are arranged in a stepped manner;

The workbench (12) is used for placing the PCBA board to be overhauled;

the workbench (12) is a workbench which is horizontally placed, a workbench which is obliquely placed or an automatic assembly line.

6. The automatic overhaul device for the PCBA board according to claim 5, characterized in that it further comprises a positioning mechanism (4), said positioning mechanism (4) being arranged on the front side of the placement table (11) by means of an adjusting structure (41), and the lower part of said positioning mechanism (4) being tightly attached to the work table (12); the positioning mechanism (4) is used for positioning the PCBA board to be overhauled.

7. The automatic overhaul device for a PCBA board according to claim 5, characterized in that the placement table (11) is internally provided with a receiving cavity for placing a welding tool;

The side of the placing table (11) is provided with an on-off button (111) and a control button (112).

8. The automatic PCBA board maintenance device according to claim 5, characterized in that said maintenance platform (1) further comprises a side plate (13), said side plate (13) being fixedly connected to said work platform (12);

the side plates (13) are provided with moving grooves, the identification mechanism (2) is connected with the moving grooves through sliding blocks, and the identification mechanism (2) can move in the moving grooves.

9. The automatic overhaul device for the PCBA board according to claim 8, wherein a plurality of through holes are provided on both sides of the movement groove, and the recognition mechanism (2) is fixed on the through holes after moving to a specified position in the movement groove.

10. An automatic PCBA board inspection device according to claim 1, characterized in that the inspection device further comprises a display mechanism (5), the display mechanism (5) being connected with the control mechanism for displaying coordinates of points to be inspected of the PCBA board to be inspected.