CN220872516U

CN220872516U - Needle bed for detecting PCBA board plug-in

Info

Publication number: CN220872516U
Application number: CN202322433626.9U
Authority: CN
Inventors: 张�荣; 刘础诚; 祝婵婵; 侯福云
Original assignee: Qingdao Dingsen Electronics Co ltd
Current assignee: Qingdao Dingsen Electronics Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-04-30
Anticipated expiration: 2033-09-07

Abstract

The utility model relates to the technical field of PCBA boards, in particular to a needle bed for detecting a PCBA board plug-in unit, which comprises the following components: the test board is arranged on the bottom wall of the inner part of the support frame, the upper end of the test board is provided with a movable groove, and a placing plate is arranged in the movable groove; through the spacing post of placing the board bottom, when the cylinder promotes the probe card and moves down, every spacing post inserts in the spacing groove that corresponds, in order to avoid the probe board skew unable alignment test point, lead to probe and circuit board damage, through will placing the board and install in the movable inslot, place the board and also can move down thereupon when the probe board moves down, through the telescopic link of placing board bottom installation, can slow down the extrusion force that the board received under the elastic action of spring, in order to avoid probe and test point rigid contact, thereby be difficult to damage probe and PCBA board, avoid producing the influence to product quality.

Description

Needle bed for detecting PCBA board plug-in

Technical Field

The utility model relates to the technical field of PCBA boards, in particular to a needle bed for detecting a PCBA board plug-in.

Background

PCBA (Printed Circuit Board Assembly) is that the PCB blank is subjected to SMT loading or the whole process of DIP plug-in, in-line test is usually the first test procedure in production, and the needle bed can test on-line components by utilizing electrical performance to check production defects and poor components, thereby being beneficial to process improvement and promotion.

In the prior art, test probes of a needle bed are used for providing test signals for specific test points of a PCBA board, and output signals are read through the specific test points to detect the problems of position accuracy, missing insertion and the like of the PCBA board plug-in.

However, the existing needle bed for detecting the plug-in of the PCBA board lacks a damping structure, and the test probe moves downwards during detection and is in direct hard contact with the test point of the PCBA board, so that the damage to the probe and the PCBA board is easy to occur, and the quality of products is affected.

Disclosure of utility model

The utility model aims to provide a needle bed for detecting the back of a PCBA board plug-in unit, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a bed for PCBA board insert rear detection, comprising: the test board is arranged on the bottom wall of the inner part of the support frame, the upper end of the test board is provided with a movable groove, and a placing plate is arranged in the movable groove;

The upper wall of the inside of the supporting frame is provided with an air cylinder, the bottom end of the air cylinder is connected with a connecting frame, the bottom end of the connecting frame is provided with a probe plate, four corners of the bottom end of the probe plate are provided with limit posts, and four corners of the upper end of the test board are correspondingly provided with limit grooves;

The heat dissipation channel has all been seted up at the both ends of movable groove, installs the telescopic link on the inside diapire of movable groove, and the outside of telescopic link is provided with the spring, and the upper end of telescopic link is connected with the joint board, and joint board demountable installation is in the bottom of placing the board.

Preferably, the upper end of the connecting frame is fixedly connected with the output end of the air cylinder, and the lower end of the connecting frame is fixedly connected with the probe board.

Preferably, the upper ends of the four limit posts are fixedly arranged on the probe plate, and the bottom ends of the four limit posts are respectively inserted into the corresponding limit grooves in a sliding manner.

Preferably, the upper end of the placing plate is provided with a placing groove, and the bottom end of the placing plate is fixedly provided with a radiating fin.

Preferably, the four corners of the upper end and the lower end of the placing plate are respectively provided with a mounting groove and a clamping groove, and bolts are respectively arranged on the inner bottom walls of the four mounting grooves.

Preferably, the clamping plates are arranged in the four clamping grooves, and the four clamping plates are detachably connected with the placing plate through bolts.

Preferably, the bottom ends of the four clamping plates are fixedly connected with the upper ends of the adjacent telescopic rods, and the bottom ends of the four telescopic rods are fixedly installed on the inner bottom wall of the movable groove.

Preferably, the upper end of each spring is fixedly arranged on the clamping plate, and the bottom end of each spring is fixedly connected with the inner bottom wall of the movable groove.

Preferably, one end of each heat dissipation channel penetrates through the test board, a filter screen is arranged in one end of each heat dissipation channel far away from the movable groove, and a fan is arranged in one heat dissipation channel.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, through the limit posts at the bottom end of the placement plate, when the air cylinder pushes the probe plate to move downwards, each limit post is inserted into the corresponding limit groove so as to prevent the probe plate from deviating and being unable to be aligned with the test point, thereby damaging the probe and the circuit board.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is an exploded view of a partial structure of the present utility model;

FIG. 3 is a schematic cross-sectional front view of the overall structure of the present utility model;

fig. 4 is an enlarged schematic view of the structure of the area a in fig. 3 according to the present utility model.

In the figure: 1. a support frame; 2. a cylinder; 3. a connecting frame; 4. a probe card; 5. a limit column; 6. a limit groove; 7. a test bench; 8. a filter screen; 9. a placement groove; 10. placing a plate; 11. a movable groove; 12. a heat dissipation channel; 13. a heat sink; 14. a bolt; 15. a mounting groove; 16. a clamping groove; 17. a telescopic rod; 18. a clamping plate; 19. a spring; 20. a blower.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 utility model will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Referring to fig. 1 to 4, the present utility model provides a technical solution: a bed for PCBA board insert rear detection, comprising: the test bench comprises a support frame 1, wherein a test bench 7 is arranged on the inner bottom wall of the support frame 1, a movable groove 11 is formed in the upper end of the test bench 7, a placing plate 10 is arranged in the movable groove 11, the placing plate 10 has heat conductivity, and the side wall of the placing plate 10 is tightly attached to the inner wall of the movable groove 11 and is in sliding connection; the upper end of the placing plate 10 is provided with a placing groove 9, the bottom end of the placing plate 10 is fixedly provided with a radiating fin 13, and the PCBA board in the placing groove 9 can be radiated through the radiating fin 13.

The upper wall of the inside of the supporting frame 1 is provided with a cylinder 2, the bottom end of the cylinder 2 is connected with a connecting frame 3, the bottom end of the connecting frame 3 is provided with a probe plate 4, four corners of the bottom end of the probe plate 4 are provided with limit posts 5, and four corners of the upper end of the test bench 7 are correspondingly provided with limit grooves 6; the upper end of link 3 and the output fixed connection of cylinder 2, the lower extreme and the probe board 4 fixed connection of link 3 can promote the link 3 and the probe board 4 reciprocates through cylinder 2, is convenient for detect. The upper ends of the four limit posts 5 are fixedly arranged on the probe plate 4, and the bottom ends of the four limit posts 5 are respectively inserted into the corresponding limit grooves 6 in a sliding manner, so that the limit of the probe plate 4 is facilitated, and the probe plate 4 is prevented from being deviated and damaged.

The heat dissipation channel 12 has all been seted up at the both ends of movable groove 11, installs telescopic link 17 on the inside diapire of movable groove 11, and the outside of telescopic link 17 is provided with spring 19, and the upper end of telescopic link 17 is connected with joint board 18, and joint board 18 demountable installation is in the bottom of placing board 10. The four corners of the upper end and the lower end of the placing plate 10 are respectively provided with a mounting groove 15 and a clamping groove 16, and bolts 14 are respectively arranged on the inner bottom walls of the four mounting grooves 15, so that the bolts 14 can be prevented from being contacted with the probe plate 4 by arranging the bolts 14 in the mounting grooves 15. The clamping plates 18 are arranged in the four clamping grooves 16, and the four clamping plates 18 are detachably connected with the placing plate 10 through bolts 14, so that the placing plate 10 can be conveniently detached and replaced. The bottom of four joint boards 18 all with the upper end fixed connection of adjacent telescopic link 17, the bottom of four telescopic link 17 all fixed mounting is on the inside diapire of movable groove 11, and four telescopic link 17 can play the supporting role to placing board 10. The upper end of each spring 19 is fixedly arranged on the clamping plate 18, and the bottom end of each spring 19 is fixedly connected with the inner bottom wall of the movable groove 11, so that the extrusion force born by the clamping plate 18 is relieved conveniently. One end of each of the two heat dissipation channels 12 penetrates through the test board 7 and is provided with a filter screen 8 inside one end far away from the movable groove 11, and the fan 20 is arranged inside one of the heat dissipation channels 12, so that impurities in air can be prevented from entering the movable groove 11 through the filter screen 8 while heat dissipation is carried out.

When the device works, through the limit posts 5 at the bottom end of the placing plate 10, when the air cylinder 2 pushes the probe plate 4 to move downwards, each limit post 5 is inserted into the corresponding limit groove 6 so as to prevent the probe plate 4 from deviating and being unable to align with a test point, so that the probe and the PCBA plate are damaged, through the radiating fins 13 arranged at the bottom end of the placing plate 10, the PCBA plate in the placing groove 9 can be radiated, through the radiating channels 12 arranged at the two ends of the movable groove 11, the heat in the movable groove 11 can be dissipated to the outside air through the fan 20, the placing plate 10 is arranged in the movable groove 11, when the probe plate 4 moves downwards, the placing plate 10 can move downwards along with the moving downwards, the clamping plate 18 and the placing plate 10 are detachably connected through the bolts 14, the placing plate 10 is convenient to be assembled and disassembled, and the extrusion force applied to the placing plate 10 can be slowed down under the elastic action of the spring 19 through the telescopic rod 17 at the bottom end of the clamping plate so as to prevent the probe and the test point from being in hard contact, thereby not to easily damage the probe and the PCBA plate and avoid influencing the quality of products.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A bed for PCBA board insert rear detection, comprising: support frame (1), its characterized in that: a test table (7) is arranged on the inner bottom wall of the support frame (1), a movable groove (11) is formed in the upper end of the test table (7), and a placing plate (10) is arranged in the movable groove (11);

The device is characterized in that an air cylinder (2) is arranged on the upper wall of the inside of the supporting frame (1), the bottom end of the air cylinder (2) is connected with a connecting frame (3), the bottom end of the connecting frame (3) is provided with a probe plate (4), four corners of the bottom end of the probe plate (4) are provided with limit posts (5), and four corners of the upper end of the test bench (7) are correspondingly provided with limit grooves (6);

The heat dissipation channel (12) has all been seted up at the both ends of movable groove (11), installs telescopic link (17) on the inside diapire of movable groove (11), and the outside of telescopic link (17) is provided with spring (19), and the upper end of telescopic link (17) is connected with joint board (18), and joint board (18) demountable installation is in the bottom of placing board (10).

2. The bed for PCBA board insert rear inspection as defined in claim 1, wherein: the upper end of the connecting frame (3) is fixedly connected with the output end of the air cylinder (2), and the lower end of the connecting frame (3) is fixedly connected with the probe card (4).

3. A bed for PCBA board insert rear inspection according to claim 2, characterized in that: the upper ends of the four limit posts (5) are fixedly arranged on the probe plate (4), and the bottom ends of the four limit posts (5) are respectively inserted into the corresponding limit grooves (6) in a sliding manner.

4. A bed for PCBA board insert rear inspection according to claim 3, wherein: the upper end of the placing plate (10) is provided with a placing groove (9), and the bottom end of the placing plate (10) is fixedly provided with a radiating fin (13).

5. The bed for PCBA board insert rear inspection as defined in claim 4, wherein: the four corners of the upper end and the lower end of the placing plate (10) are respectively provided with a mounting groove (15) and a clamping groove (16), and the inner bottom walls of the four mounting grooves (15) are respectively provided with bolts (14).

6. The bed for PCBA board insert rear inspection as defined in claim 5, wherein: the inside of four joint grooves (16) all installs joint board (18), and four joint board (18) all are connected through bolt (14) with placing board (10) dismantlement.

7. The bed for PCBA board insert rear inspection as defined in claim 6, wherein: the bottom ends of the four clamping plates (18) are fixedly connected with the upper ends of the adjacent telescopic rods (17), and the bottom ends of the four telescopic rods (17) are fixedly arranged on the inner bottom wall of the movable groove (11).

8. The bed for PCBA board insert rear inspection as defined in claim 7, wherein: the upper end of each spring (19) is fixedly arranged on the clamping plate (18), and the bottom end of each spring (19) is fixedly connected with the inner bottom wall of the movable groove (11).

9. The bed for PCBA board insert rear inspection as defined in claim 8, wherein: one end of each radiating channel (12) penetrates through the test bench (7) and is internally provided with a filter screen (8) at one end far away from the movable groove (11), and the inside of one radiating channel (12) is provided with a fan (20).