CN216209278U

CN216209278U - PCB testing device

Info

Publication number: CN216209278U
Application number: CN202122314184.7U
Authority: CN
Inventors: 宋屹
Original assignee: Shenzhen Sifo Technology Co ltd
Current assignee: Shenzhen Sifo Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a PCB board testing device, comprising: the top surface of the workbench is provided with a test bench which is used for placing a PCB; the workbench is also provided with a lifting mechanism, the lifting mechanism comprises a lifting plate, the lifting plate is connected with a probe board, a plurality of probes are arranged on the probe board, and the probe board is positioned at the upper part of the test board; the fixing mechanism comprises two barrier strips and two ejector blocks which are arranged opposite to the two barrier strips respectively, the barrier strips are arranged on two adjacent sides of the top surface of the test board respectively, and each ejector block deviates from the corresponding barrier strip and is connected with the fixed cylinder. The testing device provided by the technical scheme of the utility model can improve the testing precision.

Description

PCB testing device

Technical Field

The utility model relates to the technical field of circuit board testing, in particular to a PCB testing device.

Background

The PCB is named as a printed circuit board and is a support body of electronic components. With the continuous progress of printed circuit board technology, the structure of the circuit board becomes more and more complex and the reliability requirement becomes higher and higher, so the test requirement of the circuit board is also improved. The test equipment tests the circuit board to judge whether the circuit board is qualified.

At present, when the circuit board utilizes the probe to push down the test, because test equipment does not have reliable positioning system, when the probe pushes down, probably not aim at the test point, lead to the measuring accuracy lower, can't satisfy the test demand.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a PCB testing device, aiming at solving the technical problem of low precision of the existing testing equipment of the PCB.

In order to achieve the above object, the present invention provides a PCB testing apparatus, including:

the top surface of the workbench is provided with a test bench which is used for placing a PCB;

the workbench is also provided with a lifting mechanism, the lifting mechanism comprises a lifting plate, the lifting plate is connected with a probe board, a plurality of probes are arranged on the probe board, and the probe board is positioned at the upper part of the test board;

the fixing mechanism comprises two barrier strips and two ejector blocks which are arranged opposite to the two barrier strips respectively, the barrier strips are arranged on two adjacent sides of the top surface of the test board respectively, and each ejector block deviates from the corresponding barrier strip and is connected with the fixed cylinder.

Optionally, the lifting plate is provided with a holding groove, the probe plate is slidably connected in the lifting plate, a side wall of the holding groove is provided with a slide rail, a side wall of the probe plate is provided with a slide groove, and the slide groove is slidably connected on the slide rail.

Optionally, a spring is disposed between the top of the probe card and the bottom of the receiving slot.

Optionally, a first pressure sensor is further disposed on the accommodating groove.

Optionally, the lifting mechanism further comprises a lifting cylinder, a telescopic rod of the lifting cylinder is connected with the lifting plate, the lifting cylinder is further connected with a fixing plate, the fixing plate is connected with a support, and the support is connected to the workbench.

Optionally, a guide rod is connected between the fixed plate and the workbench, and the guide rod penetrates through the lifting plate and is slidably connected with the lifting plate.

Optionally, a second pressure sensor is arranged on the surface, opposite to the PCB, of the top block, the cylinder is fixed on a cylinder block, and the cylinder block is fixed on the workbench.

Optionally, the testing device further comprises a controller, and the controller controls the movement of the lifting mechanism and the fixing mechanism.

According to the technical scheme, the barrier strips are arranged on two adjacent sides of the top surface of the test board to serve as the position reference of the PCB, and after the PCB is placed on the test board, the PCB is abutted to the barrier strips through the two ejector blocks, so that all the PCBs are fixed at the same position during testing, the probes can be in contact with the testing holes in the PCB exactly every time the probes are tested, and the testing precision is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front view of a PCB testing device of the present invention;

FIG. 2 is a side view of the PCB testing device of the present invention;

FIG. 3 is a schematic structural diagram of a PCB testing device according to the present invention;

FIG. 4 is a schematic structural diagram of a test board in an embodiment of the PCB testing apparatus of the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Working table	41	Probe needle
2	Test board	5	Fixing mechanism
				3	Lifting mechanism	51	Stop strip
31	Lifting plate	52	Top block
				32	Accommodating tank	53	Fixed cylinder
33	Spring	6	Fixing plate
				34	First pressure sensor	7	Support frame
35	Lifting cylinder	8	Guide rod
				4	Probe card

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a PCB testing device.

In an embodiment of the present invention, as shown in fig. 1 to 4, the PCB testing apparatus includes:

the PCB testing device comprises a workbench 1, wherein a testing table 2 is arranged on the top surface of the workbench 1, and the testing table 2 is used for placing a PCB;

the worktable 1 is further provided with a lifting mechanism 3, the lifting mechanism 3 comprises a lifting plate 31, the lifting plate 31 is connected with a probe card 4, the probe card 4 is provided with a plurality of probes 41, and the probe card 4 is positioned at the upper part of the testing table 2;

fixing mechanism 5, fixing mechanism 5 includes two blend stops and two kicking blocks 52 with two relative settings of blend stop respectively, two the blend stop sets up respectively on the adjacent both sides of 2 top surfaces of testboard, each kicking block 52 deviates from correspondingly one side of blend stop is connected fixed cylinder 53.

In the specific implementation process, a plurality of fixing holes are formed in the test platform 2 and the workbench 1, and the test platform 2 is fixed on the workbench 1 through the matching of bolts and the fixing holes. Elevating system 3 drives elevating plate 31 up-and-down motion, and elevating plate 31 is located the top position of testboard 2, and probe card 4 is located elevating plate 31 and the relative one side of survey test panel, and probe card 4 can dismantle with elevating plate 31 and be connected, is convenient for change.

In this embodiment, the testing platform 2 is a platform with a square structure and is higher than the working platform 1, and the stop bars 51 are located on two adjacent sides of the testing platform 2 and fixed on the top surface of the testing platform 2. In particular, the stop strip 51 is fixed to the test table 2 by screws. The telescopic rod of the fixed cylinder 53 is connected with the top block 52, the top block 52 is opposite to the stop strip 51, and the PCB on the test bench 2 is pushed to abut against the stop strip 51 under the action of the cylinder. Still set up a plurality of through-holes on testboard 2, the through-hole can in time get rid of the air when testboard 2 is placed to the PCB board on the one hand, makes the PCB board stably place testboard 2 on the other hand, can provide test space for probe 41, avoids directly conflicting and causes probe 41 to buckle the damage on testboard 2.

According to the technical scheme, the blocking strips are arranged on two adjacent side edges of the top surface of the test board 2 and serve as position references of the PCB, after the PCB is placed on the test board 2, the PCB is abutted and contacted on the blocking strips through the two ejector blocks 52, so that all the PCBs are fixed at the same position during testing, the probes 41 can be favorably and rightly contacted with the testing holes in the PCB during testing each time, and the testing precision is improved.

Furthermore, the lifting plate 31 is provided with an accommodating groove 32, the probe card 4 is slidably connected in the lifting plate 31, the side wall of the accommodating groove 32 is provided with a slide rail, the side wall of the probe card 4 is provided with a slide groove, and the slide groove is slidably connected on the slide rail.

In this embodiment, the notch of holding tank 32 still sets up the dog, avoids probe card 4 roll-off, and slide rail and the integrative setting of holding tank 32 closely cooperate the slip between slide rail and the spout. The slide rail and the sliding groove are matched to limit and guide the probe board 4, so that the probes 41 can move along the same route every time, and the testing precision is improved.

Further, a spring 33 is disposed between the top of the probe card 4 and the bottom of the receiving groove 32.

In the specific implementation process, after the probe 41 abuts against the test hole on the PCB, the damage to the test hole on the PCB or the probe 41 due to the impact or the excessive inertia force is buffered by the spring 33, so as to avoid the excessive force. Further, a first pressure sensor 34 is disposed on the accommodating groove 32. When the probe card 4 collides with the first pressure sensor 34 and the pressure reaches a predetermined value, the elevating mechanism 3 is not lowered any more, thereby preventing damage.

Optionally, the lifting mechanism 3 further includes a lifting cylinder 35, a telescopic rod of the lifting cylinder 35 is connected to the lifting plate 31, the lifting cylinder 35 is further connected to a fixing plate 6, the fixing plate 6 is connected to a support 7, and the support 7 is connected to the workbench 1.

In this embodiment, the lifting cylinder 35 pushes the lifting plate 31 to lift, so as to complete the probe test. Specifically, a support 7 is fixed on one side of the workbench 1, a fixing plate 6 is connected to the upper portion of the support 7, the fixing plate 6 extends to the upper portion position facing the workbench 1, a lifting cylinder 35 is connected to one side, opposite to the workbench 1, of the fixing plate 6, a telescopic rod of the lifting cylinder 35 is connected with the lifting plate 31, and a probe plate 4 is arranged in the lifting plate 31, so that a probe is driven to complete testing.

Further, a guide rod 8 is connected between the fixing plate 6 and the workbench 1, and the guide rod 8 penetrates through the lifting plate 31 and is slidably connected with the lifting plate 31.

The guide rod 8 penetrates through the lifting plate 31, the lifting plate 31 slides along the guide rod 8, the movement path of the probe board 4 is further limited, and the testing precision is improved.

Optionally, a second pressure sensor is disposed on a surface of the top block 52 opposite to the PCB, the cylinder is fixed on a cylinder block, and the cylinder block is fixed on the workbench 1.

In the specific implementation process, after the top block 52 pushes the PCB to abut against the stop strip 51, if the force is too large, the PCB is damaged, in this embodiment, the second pressure sensor is installed on the top block 52, and when the tested pressure value reaches the preset value, the telescopic rod of the cylinder stops propelling forward, so that the PCB is protected from being damaged.

Optionally, the testing device further comprises a controller, and the controller controls the movement of the lifting mechanism 3 and the fixing mechanism 5.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A PCB board testing device, comprising:

2. The PCB testing device of claim 1, wherein the lifting board is provided with a receiving slot, the probe board is slidably connected in the lifting board, a side wall of the receiving slot is provided with a slide rail, a side wall of the probe board is provided with a slide groove, and the slide groove is slidably connected to the slide rail.

3. The PCB board testing apparatus of claim 2, wherein a spring is disposed between the top of the probe card and the bottom of the receiving slot.

4. The PCB apparatus of claim 3, wherein the receiving groove is further provided with a first pressure sensor.

5. The PCB testing device of claim 1, wherein the lifting mechanism further comprises a lifting cylinder, a telescopic rod of the lifting cylinder is connected with the lifting plate, the lifting cylinder is further connected with a fixing plate, the fixing plate is connected with a bracket, and the bracket is connected to the workbench.

6. The PCB testing device of claim 5, wherein a guide bar is connected between the fixing plate and the worktable, and the guide bar passes through the lifting plate and is slidably connected with the lifting plate.

7. The PCB testing device of claim 1, wherein a second pressure sensor is disposed on a surface of the top block opposite to the PCB, the cylinder is fixed on a cylinder block, and the cylinder block is fixed on the worktable.

8. The PCB board testing device of any one of claims 1-7, wherein the testing device further comprises a controller, the controller controlling the movement of the lifting mechanism and the fixing mechanism.