CN204166077U - A kind of PCBA board efficient quality guaranteeing mistake proofing test fixture tool - Google Patents

Abstract

The utility model discloses a PCBA board high-efficiency quality-guaranteed error-proof testing fixture, which includes a base, a load-bearing column, a pressure rod fixing plate and a cover-closing pressure rod for fast clamping hands. The fast clamping hands drive the lower pressure plate to move vertically. Pressure plate, the lower pressure column on the lower pressure plate, the test pin corresponding to the electrical test hole on the PCBA board, the power supply, and the indicator light; wherein, the bearing column has a spring structure inside, which compresses downward when the lower pressure plate is pressed down, To guide the electrical test hole of the PCBA board into the test pin, so as to conduct the circuit formed by the PCBA board, indicator light, test pin and power supply. It conducts electrical continuity test for PCBA boards, which can prevent the outflow of bad PCBA products in batches. The tooling fixture has simple structure, convenient operation, high manual detection efficiency, and will not damage or destroy electronic components on PCBA boards.

Description

A PCBA board high-efficiency quality assurance and error-proof testing fixture

technical field

The utility model relates to the technical field of SMT, and particularly discloses a high-efficiency, quality-guaranteed, and error-proof testing fixture for a PCBA board. the

Background technique

Printed circuit board, also known as printed circuit board, printed circuit board, often uses the English abbreviation PCB (Printed circuit board), is an important electronic component, a support for electronic components, and a provider of circuit connections for electronic components. PCBA is the abbreviation of Printed Circuit Board+Assembly in English, that is to say, the empty PCB board passes through the SMT upper part, and then goes through the whole process of DIP plug-in, referred to as PCBA, and its plug-in finished product is called PCBA board. the

Both SMT and DIP are ways to integrate electronic components on the PCB. The main difference is that SMT does not need to drill holes on the PCB. In DIP, the PIN pins of electronic components need to be inserted into the drilled holes. SMT (Surface Mounted Technology), that is, surface mount technology, mainly uses the placement machine to mount some tiny electronic components on the PCB board. The production process is: PCB board positioning, printing solder paste, placement machine placement , After reflow oven and finished inspection. DIP is "plug-in", that is, inserting electronic components on the PCB board. Due to the large size of electronic components and not suitable for placement or when the manufacturer's production process cannot use SMT technology, electronic components are integrated in the form of plug-ins. the

In order to prevent the circuit in the PCB board from being disconnected and causing poor conduction, or short-circuiting with other circuits to cause poor insulation, it is necessary to check whether it is formed according to the design in the electrical aspect. In order to ensure the factory quality of the PCB board, after the production is completed, it is necessary to check whether the circuit circuit is normal. At this time, the circuit board needs to be tested on a test fixture. The electrical testing fixture for PCB empty boards is also a research hotspot. For example, patent CN102062789A discloses a PCB board insulation resistance test stand, including a base, a PCB board placement table, a guide column, a test pin, a test pin stand and a test wire, and the guide The column and the PCB board placement table or the test needle table are fixed on the base, the PCB board placement table is provided with a PCB board positioning structure, the test needles are set on the test needle table, and the PCB board placement table or the test needle table is provided with a guide column With the matching guide hole, the test lead electrically connects the binding post with the test pin. Patent CN103412165A discloses a test fixture for testing the pin-point conduction of the mobile phone PCB board, which adopts an ascending design and avoids crushing the PCB board, including a test bench, a support board, a top seat, a cylinder, a positioning carrier board, and a moving board , pin board and probes, a support plate is provided on the back side of the test bench, a top seat above the test bench is connected to the front end of the support plate, and a positioning carrier plate for placing the PCB board is provided at the bottom of the front end of the top seat. A cylinder is arranged at the bottom of the rear end of the top seat, and the cylinder rod of the cylinder is connected to a moving plate arranged horizontally. A pin plate is arranged on the top of the moving plate, and a plurality of probes are arranged in the pin plate. Patent CN201945669U discloses a circuit board testing device, which at least includes: a main body, an upper seat and a lower seat, the main body is provided with a bearing platform for carrying circuit boards, and the upper and lower seats are installed on the main body The upper and lower seats are respectively equipped with test fixtures, the upper and lower seats can move up and down towards the carrying platform respectively, and each test fixture is used to test the circuit board, and by the side of the upper and lower seats The connection base leads out the test signal, so that the probes in the test fixtures of the upper and lower bases can bear the force evenly, and can quickly perform the circuit test operation on both sides of the circuit board. Patent CN202275127U discloses an automatic test fixture for PCB boards, which includes a bottom box, a carrier board, a needle board, a circuit board, and an upper top board arranged sequentially from bottom to top. The upper top board and the needle board are fixedly connected by pillars, and the test The probe is set opposite to the carrier board located at the lower part of the needle board, the carrier board is arranged on the upper part of the bottom box, and the circuit board is fixed on the upper part of the needle board, the signal line on the circuit board extends into the bottom box, and the middle position of the bottom box There is a cavity, and a cylinder is arranged in the cavity, the piston rod of the cylinder is connected with the bottom surface of the carrier plate, and the carrier plate is slidably connected with the upper surface of the bottom box. In addition, the The top of the upper ceiling is also connected with a down-pressing cylinder, and the down-pressing cylinder is fixed by a bracket arranged on the bottom box. Patent CN102680752A discloses a flexible circuit board electric measuring fixture, including a moving board that can move vertically along two vertical guide columns on the platform, a fixed needle board that is arranged on the moving board and the lower surface, and adjustable number or thickness. The adjusting needle board, the fixed needle board, the moving board and the adjusting needle board are provided with holes through which the probes can be accommodated. the

However, the detection fixtures of the above patents are all aimed at empty PCB boards, not PCBA boards. After SMT patching and DIP plug-in, the PCBA board is full of components, and the overall level is uneven. The test pressure plate in the prior art is used. It is extremely easy to damage and destroy electronic components. the

Utility model content

The purpose of the utility model is to provide a PCBA board high-efficiency quality assurance and error-proof testing fixture, which detects the electrical performance of the PCBA board and prevents the outflow of bad batch products before the PCBA board is assembled. It has a simple structure and is easy to operate. Damage or destroy the electronic components on the PCBA board. the

The utility model provides a PCBA board high-efficiency quality assurance and error-proof testing fixture, including

base,

The bearing column is set on the base and is used to carry the PCBA board to be tested; 

The fixing rod is arranged on the base for fixing the PCBA board, and the height of the fixing rod is greater than the height of the bearing column; 

Closing the pressing bar, including the pressing bar fixing plate and the quick gripper set on the pressing bar fixing plate, and the pressing bar fixing plate is set on the base;

The lower pressing plate is set on the pressing rod of the cover, and is movably connected with the quick clamping hand. The quick clamping hand drives the lower pressing plate to move vertically; the height of the component;

The test pin is set on the base and corresponds to the electrical test hole on the PCBA board. The height of the test pin is smaller than the height of the bearing column; 

a power supply, electrically connected to the test pins; and

The indicator light forms a loop with the test pin and the power supply, and is used for the on-off test of the PCBA board to be tested;

Among them, the bearing column has a spring structure inside, which compresses and moves downward when the lower pressure plate is pressed down, so as to guide the electrical test hole of the PCBA board to be inserted into the test needle, thereby conducting the circuit formed by the PCBA board, indicator light, test needle and power supply. the

Preferably, the bearing column includes an outer cylinder, a spring placed on the inner bottom of the outer cylinder, and an iron column placed on the spring. Under the state of bearing the self-weight of the PCBA board, the height of the bearing column is greater than the height of the test needle, and the continuous application After downforce, the height of the bearing column is less than the height of the test pin. the

Preferably, the fixing rods are divided into four groups, which are respectively located at the four corners of the PCBA board to be tested, and each group of fixing rods includes at least two cylindrical rods, which are respectively located outside two adjacent vertical edges of the PCBA board. The design of the fixing rod can avoid the left and right shaking of the PCBA board on the load-bearing column when the lower pressing plate is pressed down, resulting in inaccurate or deviation of the test target position. It can better fix the PCBA board and position it, the overall structure is simple, and the manual operation is also convenient. the

The empty PCB board is patched by SMT, and then the PCBA board is formed after the DIP plug-in, and the electrical continuity test is performed on it. The steps are: first, prevent the PCBA board from being placed on the load-bearing column, and fix its surroundings with fixing rods. At this time, test Due to the insufficient height of the needle, it failed to connect with the electrical test hole on the PCBA board; secondly, manually operating the quick gripper on the cover pressing rod to drive the lower pressing plate to move downward, the lower pressing column on the lower pressing plate touches the PCBA board, and Apply external force to the PCBA board, the force is transmitted to the bearing column, and the spring at the bottom is compressed after being stressed, driving the PCBA board to move downward; again, the test pin is inserted into the electrical test hole of the PCBA board, and the PCBA board, indicator light, and test The circuit formed by the needle and the power supply is conducted, and the operator can observe the on and off of the indicator light, and make a judgment on whether the finished PCBA is qualified; finally, the manual operation of the quick clamp on the cover pressing lever, the lower pressing plate is released and moves upward, The bearing column returns upwards. For unqualified PCBA products, the operator picks them out for repair in time to prevent the outflow of unqualified products; for qualified PCBA products, the operator releases them into the next process. the

Preferably, the position where the lower pressure column is set on the lower pressure plate corresponds to the blank position on the PCBA board; avoid that the force point of the lower pressure column falls on the electronic components of the PCBA board during the pressing process, thereby damaging or destroying the electronic components. components. the

Preferably, the indicator lights are LED colored lights. the

The beneficial effects of the utility model are as follows: testing the electrical performance of the PCBA board can prevent the outflow of bad PCBA products in batches; the tooling fixture has simple structure, convenient operation, high manual detection efficiency, and will not damage or destroy the PCBA board on the electronic components. the

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. the

Description of drawings

Fig. 1 is a structural schematic diagram of a PCBA board high-efficiency, quality-guaranteed, and error-proof testing fixture of the present invention. the

In the figure, 1-base, 2-loading column, 3-fixing rod, 4-pressure rod fixing plate, 5-quick grip, 6-lower pressure plate, 7-lower pressure column, 8-test needle, 9-LED color Lamp, 10-PCBA board; 21-outer cylinder, 22-spring, 23-iron column. the

Detailed ways

This embodiment is a preferred implementation mode of the present utility model. Others whose principle and basic structure are the same or similar to this embodiment are within the protection scope of the present utility model. the

Please refer to accompanying drawing 1, the PCBA board of the utility model has high-efficiency, quality-guaranteed, and error-proof testing fixtures, including

Base 1;

The bearing column 2 is arranged on the base 1, and is used to carry the PCBA board 10 to be tested;

The fixed rod 3 is arranged on the base 1 for fixing the PCBA board 10, and the height of the fixed rod 3 is greater than the height of the bearing column 2;

Closing the pressing rod, including the pressing rod fixing plate 4 and the quick gripper 5 arranged on the pressing rod fixing plate 4, and the pressing rod fixing plate 4 is arranged on the base 1;

The lower pressing plate 6 is located on the cover pressing rod, and is movably connected with the fast clamping hand 5, and the quick clamping hand 5 drives the lower pressing plate 6 to move vertically; the lower pressing plate 6 is provided with a lower pressing column 7, and the height of the lower pressing column 7 is greater than The height of any electronic component on the PCBA board 10, the position where the lower pressure column 7 is arranged on the lower pressure plate 6 corresponds to the blank position on the PCBA board 10, so as to prevent the pressure point of the lower pressure column 7 from falling during the pressing process. On the electronic components of the PCBA board 10, thereby damaging or destroying the electronic components;

The test pin 8 is arranged on the base 1, corresponding to the electrical test hole on the PCBA board 10, and the height of the test pin 8 is less than the height of the bearing column 2;

a power supply (not shown), electrically connected to the test pin 8; and

The LED colored light 9 forms a circuit with the test pin 8 and the power supply, and is used for the on-off test of the PCBA board to be tested;

Wherein, the bearing column 2 has a spring structure inside, and when the lower pressing plate 6 is pressed down, it compresses and moves downward, so as to guide the electrical test hole of the PCBA board to be inserted into the test pin 8, thereby conducting the PCBA board 10, the LED color lamp 9, and the test pin 8 The circuit formed with the power supply. In this embodiment, the bearing column 2 is designed to include an outer cylinder 21, a spring 22 placed on the inner bottom of the outer cylinder 21, and an iron column 23 placed on the spring 22. Under the self-weight state of the PCBA board, the bearing column 2 The height of the bearing column 2 is greater than the height of the test pin 8, and the height of the bearing column 2 is smaller than the height of the test pin 8 after the downward force is continuously applied. the

Wherein, the setting of the fixing rod 3 is not indispensable. Setting the fixing rod 3 can better prevent the left and right shaking of the PCBA board 10 on the bearing column during the pressing down of the lower pressing plate, resulting in inaccurate or deviation of the test target position. the

In this embodiment, the fixed rods 3 are divided into four groups, which are respectively located at the four corners of the PCBA board 10 to be tested. Each group of fixed rods 3 includes at least two cylindrical rods, which are respectively located on the outside of two adjacent vertical edges of the PCBA board 10 . the

The empty PCB board is patched by SMT, and then the PCBA board is formed after DIP plug-in, and its electrical performance is tested. The steps are: 

1. Prevent the PCBA board on the bearing column, and fix it around it with the fixing rod. At this time, the test pin is not high enough to connect with the electrical test hole on the PCBA board; 

2. Manually operate the quick clamp on the lid closing lever to drive the lower pressing plate to move downward. The lower pressing column on the lower pressing plate contacts the PCBA board and applies external force to the PCBA board. The force is transmitted to the bearing column, and the spring at the bottom Compressed after being stressed, driving the PCBA board to move downward;

3. Insert the test needle into the electrical test hole of the PCBA board, the circuit formed by the PCBA board, LED lights, test needles and the power supply is conducted, and the operator can observe the LED lights on and off to determine whether the finished PCBA is qualified Judgment: LED lights are on, indicating that the circuit is conductive, and the finished PCBA is qualified; while the LED lights are off, it means that the circuit is not conducting, and the finished PCBA is unqualified; 

4. Manually operate the quick clamp on the cover pressing rod, the lower pressing plate is released and moves upward, and the bearing column returns upward. For unqualified PCBA products, the operator promptly picks out and repairs them to prevent the outflow of unqualified products; For PCBA products, the operator releases them into the next process. the

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model . the

Claims (5)

1. a PCBA board efficient quality guaranteeing mistake proofing test fixture tool, is characterized in that: comprise base,

Bolster stake, is arranged on base, for carrying PCBA board to be measured;

Fixed bar, is arranged on base, and for fixing PCBA board, the height of fixed bar is greater than the height of bolster stake;

Closing lid depression bar, comprise depression bar fixed head and be located at the quick tong on depression bar fixed head, depression bar fixed head is arranged on base;

Lower platen, is located on closing lid depression bar, is flexibly connected with quick tong, and quick clip hand-motion lower platen does vertical movement; Lower platen is provided with lower compression leg, and the height of lower compression leg is greater than the height of the arbitrary electronic devices and components in PCBA board;

Testing needle, is arranged on base, corresponding with the electric test hole in PCBA board, and the height of testing needle is less than the height of bolster stake;

Power supply, is electrically connected with testing needle; And

Pilot lamp, forms loop with testing needle, power supply, for carrying out the on off test of PCBA board to be measured;

Wherein, bolster stake inside has spring structure, the downward compression movement when lower platen presses down, to guide the electric test borehole jack of PCBA board to enter testing needle, thus the loop that conducting PCBA board, pilot lamp, testing needle and power supply are formed.

2. PCBA board efficient quality guaranteeing mistake proofing test fixture tool according to claim 1, it is characterized in that: described bolster stake comprises urceolus, be positioned over the spring of urceolus inner bottom part, and the iron prop be positioned on spring, under the deadweight state of carrying PCBA board, the height of bolster stake is greater than the height of testing needle, and after being continuously applied downforce, the height of bolster stake is less than the height of testing needle.

3. PCBA board efficient quality guaranteeing mistake proofing test fixture tool according to claim 2, it is characterized in that: fixed bar divides four groups, lay respectively at four angles of PCBA board to be measured, often organize fixed bar and comprise at least two cylindrical bars, lay respectively at the outside of two adjacent vertical edge of PCBA board.

4. PCBA board efficient quality guaranteeing mistake proofing test fixture tool according to any one of claim 1 to 3, is characterized in that: the position that lower compression leg is arranged on lower platen is corresponding with the blank position in PCBA board.

5. PCBA board efficient quality guaranteeing mistake proofing test fixture tool according to any one of claim 1 to 3, is characterized in that: described pilot lamp is LED color lamp.