PCB testing device

Abstract

The utility model discloses a PCB testing device, and relates to the field of PCB testing. The PCB testing device comprises a base on which a mounting rack is fixedly mounted, and further comprises a placing plate connected to the base in a lifting manner, a clamping plate connected to the placing plate, and a clamping plate connected to the clamping plate, the clamping mechanism is arranged on the placing plate and is used for clamping and fixing the PCB placed on the placing plate; according to the utility model, the dual cleaning functions of dust collection and blowing on the PCB are realized by matching the dust collection groove and the air injection hole on the U-shaped frame with the dust collection pump and the filter box, the PCB is cleaned before a test, pollutants such as dust and impurities on the surface of the PCB can be effectively removed, the safety and effectiveness of the test are improved, the service life of the PCB is prolonged, and the test efficiency is improved. And when the PCB is cleaned, dust and particulate impurities can be effectively prevented from being attached to the surface of the PCB again, and the performance stability and reliability of the PCB in the testing and subsequent using processes are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of PCB test, specifically relates to a PCB test device. BACKGROUND

[0002] PCB circuit board is also called printed circuit board, is an important electronic component, is the support body of electronic components, is the carrier of electrical interconnection of electronic components, because it is made by electronic printing, is called "printed" circuit board, and the PCB circuit board needs to be detected before being loaded into electronic components.

[0003] Such as patent application no. 202322237318.9, the utility model discloses a positioning assembly and circuit board test tool, relates to the field of circuit board test.The positioning assembly, including the placement board, wherein, the placement board is symmetrically provided with the guide sliding assembly, the guide sliding assembly is provided with the fixed assembly for positioning the circuit board;The fixed assembly includes sleeve, piston plate, spring one, pull rod, connecting rod and fixed plate, wherein, the sleeve is connected on the guide sliding assembly, the piston plate is slidably connected in the sleeve, and the spring one is fixedly connected between the piston plate and the top inner wall of the sleeve;The utility model can adjust the spacing between the two fixed assemblies according to the size of the circuit board, so that the two symmetrically arranged fixed assemblies can achieve clamping and positioning of circuit boards of different sizes, and can achieve cleaning of dust attached on the circuit board, prevent dust from affecting the accuracy of subsequent circuit board test;

[0004] The above patent can only blow dust away from the surface of the circuit board, but cannot collect it, so that the dust may re-settle on the PCB when the surrounding environment is reduced, and the cleaning effect is reduced, and the utility model is proposed in view of the above. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide a PCB test device that can overcome the above problems or at least partially solve the above problems.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0007] A PCB testing device, comprising a base, a mounting frame fixedly installed on the base, a placing plate connected to the base through a lifting mechanism, a clamping mechanism arranged on the placing plate and used for clamping and fixing a PCB placed on the placing plate, wherein a detection groove is formed in the placing plate, a testing probe corresponding to the detection groove is fixedly installed on the base, and a guide groove is formed in the mounting frame; a sliding rod is slidably connected in the guide groove, wherein a U-shaped frame is fixedly installed on the sliding rod, a plurality of air injection holes and dust suction grooves are formed in the inner walls of the two sides of the U-shaped frame; a dust suction pump and a filter box are fixedly installed on the mounting frame, wherein the input end of the dust suction pump is connected in communication with the dust suction grooves through a dust suction pipe, and the output end of the dust suction pump is connected in communication with the filter box; and a gas conveying pipe is connected in communication between the filter box and the air injection holes.

[0008] In order to clamp and fix the PCB placed on the placing plate, preferably, the clamping mechanism comprises two support frames symmetrically connected to the placing plate, a gas cylinder is fixedly installed on the support frame, and a fixed plate is fixedly connected to the output end of the gas cylinder.

[0009] In order to improve the universality and applicability of the clamping mechanism, further, two sliding grooves symmetrically formed in the placing plate are further included, and the two support frames are slidably connected in the sliding grooves.

[0010] Preferably, an electric telescopic rod is fixedly installed on the mounting frame, a pressing plate is fixedly connected to the output end of the electric telescopic rod, and the pressing plate is used for pushing the placing plate to move downward.

[0011] In order to improve the stability of the placing plate when sliding downward on the base, further, a guide rod is slidably connected to the base, and one end of the guide rod penetrating through the base is fixedly connected to the placing plate.

[0012] In order to assist the placing plate to reset, further, a spring is sleeved on the guide rod, one end of the spring is fixedly connected to the placing plate, and the other end of the spring is fixedly connected to the base.

[0013] Preferably, a plurality of activated carbon filter screens are detachably connected in the filter box.

[0014] In order to facilitate the cleaning of dust and particulate impurities adsorbed on the activated carbon filter screens, further, the plurality of activated carbon filter screens are equidistantly inserted into the filter box.

[0015] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art:

[0016] The utility model discloses a dust absorption groove and air injection hole cooperate dust absorption pump, filter box realize the double cleaning function of dust absorption and blowing of PCB board, clean the PCB board before testing, can effectively remove the dust, impurity and other pollutants on the PCB board surface, improve the safety and effectiveness of testing, also be favorable to prolong the service life of PCB board, and when cleaning the PCB board, can effectively prevent dust, particulate impurity from adhering to the PCB board surface again, guarantee the performance stability and reliability of PCB board in the testing and subsequent use process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure diagram of the utility model Figure 1 ;

[0018] Figure 2 It is the structure diagram of the utility model Figure 2 ;

[0019] Figure 3 It is the sectional view of base, placing plate, mounting frame of the utility model;

[0020] Figure 4 It is the structure diagram of placing plate, clamping mechanism of the utility model;

[0021] Figure 5 It is the structure diagram of the utility model partly;

[0022] Figure 6 It is the structure diagram of the utility model Figure 3 A part of the utility model.

[0023] In the drawing: 1, base;101, mounting frame;2, placing plate;201, guide rod;202, spring;3, electric telescopic rod;301, pressing plate;302, test probe;4, sliding groove;401, support frame;402, air cylinder;403, fixed plate;5, U type frame;501, sliding rod;502, air injection hole;503, dust absorption groove;504, dust absorption pump;505, dust absorption pipe;6, filter box;601, activated carbon filter screen;602, gas pipe. DETAILED DESCRIPTION

[0024] In order to make the utility model embodiment's purpose, technical scheme and advantage more clear, below will combine the drawing in the utility model embodiment, to the technical scheme in embodiment, clear, complete description, following embodiment is used to explain the utility model, but not to limit the scope of the utility model.

[0025] Embodiment 1:

[0026] Refer to Figure 1 、 Figure 3 、 Figure 5、 Figure 6 The utility model provides a PCB board testing device, including pedestal 1, fixed mounting has mounting frame 101 on pedestal 1, still include: the placing plate 2 of elevating connection on pedestal 1, clamping mechanism is set up on the placing plate 2, and it is used to the clamping fixed of PCB board placed on the placing plate 2, wherein, the detection groove is opened on the placing plate 2, and the test probe 302 corresponding with detection groove is fixedly installed on pedestal 1, and the guide slot is opened on mounting frame 101, sliding rod 501 is slidably connected in the guide slot, wherein, the U type frame 5 is fixedly installed on sliding rod 501, and a plurality of air jet holes 502, dust suction groove 503 are opened on the both sides inner wall of U type frame 5, dust suction pump 504, filter box 6 are all fixedly installed on mounting frame 101, wherein, the input end of dust suction pump 504 is connected with dust suction groove 503 through dust suction pipe 505, and the output end of dust suction pump 504 is connected with filter box 6, and the one end of gas pipe 602 is connected with filter box 6, and the other end is connected with air jet hole 502.

[0027] A plurality of activated carbon filter screens 601 are detachably connected in the filter box 6.

[0028] In order to prevent the dust attached to the surface of the PCB board from affecting the accuracy of subsequent performance test, the dust attached to the surface of the PCB board needs to be cleaned before the performance of the PCB board to be tested is tested.

[0029] When cleaning, first, place the PCB board to be tested on the placing plate 2, then start the dust suction pump 504, so that the negative pressure is generated in the dust suction groove 503, due to the existence of air pressure difference, the air near the dust suction groove 503 and the dust and particulate impurities mixed therein flow to the dust suction groove 503 and are sucked into the filter box 6 through the dust suction pipe 505, at this time, the activated carbon filter screen 601 in the filter box 6 filters and purifies the sucked air, the dust and impurities are intercepted and adsorbed by the filter screen, and the purified air is gathered in the filter box 6, causing the air pressure in the box to gradually increase.

[0030] At the same time, the high-pressure air in the filter box 6 flows to the air jet hole 502 along the gas pipe 602, at this time, the air jet hole 502 sprays the high-pressure air in the form of high-speed airflow, the sprayed airflow directly acts on the surface of the PCB board, so that the high-speed airflow can overcome the adhesion between the dust, particulate impurities and the surface of the PCB board, so that the dust and impurities are separated from the surface of the PCB board and carried by the airflow.

[0031] The dust and particulate impurities blown away from the surface of the PCB by the air blowing hole 502 will move to the dust tank 503 under the driving of the airflow, at this time, the dust and impurities blown away and in motion will be sucked into the dust tank 503, and then transported to the filter box 6 for final filtering treatment, thereby effectively preventing the dust and particulate impurities from re-attaching to the surface of the PCB, realizing relatively thorough cleaning treatment of the surface of the PCB, and guaranteeing the performance stability and reliability of the PCB in the testing and subsequent use process.

[0032] Meanwhile, the operator holds the handle on the sliding rod 501 and moves the sliding rod 501 in the guide groove of the mounting frame 101 by applying a certain external force, since the U-shaped frame 5 is fixed with the sliding rod 501, the U-shaped frame 5 will move synchronously with the sliding rod 501, in the moving process, the U-shaped frame 5 can ensure that the airflow blown by the air blowing hole 502 can cover each area of the PCB, so that the dust tank 503 can effectively adsorb the dust and impurities blown away, achieving the purpose of comprehensive and efficient cleaning of the surface of the PCB.

[0033] It should be noted that the dust suction pipe 505 and the gas conveying pipe 602 are both provided with one-way valves.

[0034] The dust suction pipe 505 and the gas conveying pipe 602 are both stretchable and retractable flexible pipes, so the dust suction pipe 505 and the gas conveying pipe 602 will not interfere with the sliding of the U-shaped frame 5 on the mounting frame 101.

[0035] Embodiment 2:

[0036] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a PCB testing device, which is basically the same as embodiment 1, further comprises two support frames 401 symmetrically connected to the placement plate 2, and a gas cylinder 402 is fixedly installed on the support frame 401, and a fixed plate 403 is fixedly connected to the output end of the gas cylinder 402.

[0037] Further comprising two sliding grooves 4 symmetrically provided on the placement plate 2, and the two support frames 401 are slidingly connected in the sliding grooves 4.

[0038] An electric telescopic rod 3 is fixedly installed on the mounting frame 101, and a pressing plate 301 is fixedly connected to the output end of the electric telescopic rod 3.

[0039] A guide rod 201 is slidingly connected to the base 1, and one end of the guide rod 201 penetrating through the base 1 is fixedly connected with the placement plate 2.

[0040] The spring 202 is sleeved on the guide rod 201, one end of the spring 202 is fixedly connected with the placing plate 2, and the other end is fixedly connected with the base 1.

[0041] Firstly, the PCB to be tested is placed on the placing plate 2, then the air cylinder 402 is started, the output end of the air cylinder 402 drives the fixed plate 403 to move downwards until the two symmetrical fixed plates 403 are in contact with the PCB to clamp and fix the PCB, then the electric telescopic rod 3 is started, the output end of the electric telescopic rod 3 drives the pressing plate 301 to move downwards, the pressing plate 301 drives the placing plate 2 to move downwards along the guide rod 201, at this time, the spring 202 is compressed, the detection groove on the placing plate 2 is in contact with the test probe 302 on the base 1, and the physical contact between the test probe 302 and the test point of the PCB realizes the transmission and test of the electrical signal, such as detecting the electrical parameters of the PCB, such as circuit continuity, resistance value, capacitance value and the like.

[0042] Since the support frames 401 can freely move in the sliding groove 4, the relative distance between the two support frames 401 can be changed, when the PCB of different sizes needs to be clamped, the support frames 401 can be correspondingly slid in the sliding groove 4 according to the width of the PCB, so that the PCB of small size to the PCB of large size can be effectively clamped, the universality of the device is greatly improved, the need to replace the clamping mechanism or the whole test equipment due to the size difference of the PCB is reduced, the efficiency and flexibility of the test work are improved, and the production cost and equipment maintenance cost are reduced.

[0043] Embodiment 3:

[0044] Referring to Figure 3 A PCB testing device, basically same as embodiment 1, further, a plurality of activated carbon filter screens 601 are equidistantly inserted into the filter box 6.

[0045] Since the insertion type mounting mode is adopted, when the activated carbon filter screen 601 is saturated or damaged, the operator can conveniently pull out the old filter screen from the filter box 6 and replace the new filter screen, the replacement mode does not need complex tools and professional technology, the maintenance cost and time are greatly reduced, and the continuous and stable operation of the filtering system is ensured.

[0046] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form, although the present application has been disclosed as above with reference to the preferred embodiments, however, the present application is not intended to be limited thereto.

Claims

1. A PCB board testing device, comprising a base (1), a mounting rack (101) is fixedly installed on the base (1), characterized in that, Also include: Lifting connection on the base (1) of the placement plate (2); Clamping mechanism, provided on the placement plate (2), and used for clamping and fixing the PCB placed on the placement plate (2), Wherein, the detection groove is opened on the placement plate (2), the test probe (302) corresponding to the detection groove is fixedly installed on the base (1), and the guide groove is opened on the mounting bracket (101); Sliding rod (501), slidingly connected in the guide groove, Wherein, the U-shaped frame (5) is fixedly installed on the sliding rod (501), and a plurality of air injection holes (502), dust suction grooves (503) are opened on the two side inner walls of the U-shaped frame (5); Dust suction pump (504), filter box (6), are fixedly installed on the mounting bracket (101), Wherein, the input end of the dust suction pump (504) is communicated with the dust suction groove (503) through the dust suction pipe (505), and the output end of the dust suction pump (504) is communicated with the filter box (6); Gas pipe (602), one end of which is communicated with the filter box (6), and the other end is communicated with the air injection hole (502).

2. The PCB testing device of claim 1, wherein, The clamping mechanism includes two support frames (401) symmetrically connected to the placement plate (2), the gas cylinder (402) is fixedly installed on the support frame (401), and the output end of the gas cylinder (402) is fixedly connected with the fixed plate (403).

3. The PCB testing device of claim 2, wherein, Also include two symmetrical grooves (4) opened on the placement plate (2), and the two support frames (401) are slidingly connected in the groove (4).

4. The PCB testing device of claim 1, wherein, The mounting bracket (101) is fixedly installed with an electric telescopic rod (3), and the output end of the electric telescopic rod (3) is fixedly connected with a pressing plate (301), and the pressing plate (301) is used for pushing the placement plate (2) to move downward.

5. The PCB testing apparatus of claim 4, wherein, The base (1) is slidingly connected with a guide rod (201), one end of the guide rod (201) penetrating the base (1) is fixedly connected with the placement plate (2).

6. The PCB testing apparatus of claim 5, wherein, The spring (202) is sleeved on the guide rod (201), one end of the spring (202) is fixedly connected with the placement plate (2), and the other end is fixedly connected with the base (1).

7. The PCB testing device of claim 1, wherein, A plurality of activated carbon filter screens (601) are detachably connected in the filter box (6).

8. The PCB testing apparatus of claim 7, wherein, A plurality of activated carbon filter screens (601) are inserted into the filter box (6) at equal intervals.

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