CN207851241U - A kind of circuit board function test device - Google Patents

Abstract

The utility model discloses a kind of circuit board function test devices, aim to solve the problem that the problem of circuit board test device is not suitable for testing the wiring board for being equipped with electronic component in the prior art, its key points of the technical solution are that including carrying disk fixed mechanism, driving mechanism, mechanism for testing and induction mechanism；The carrying disk fixed mechanism includes cope plate and lower template, and the cope plate bottom surface is fixedly installed at least three positioning columns, and the top surface of the lower template is provided with the location hole being inserted into for positioning column, locating part is additionally provided on the cope plate.When test, cope plate is mutually drawn close with lower template, positioning column is inserted into the location hole in lower template after passing through the preformed hole on carrying disk, so that the firm fixation of carrying disk under the cooperation of locating part, there are certain intervals between cope plate and carrying disk simultaneously, have the advantage that testing efficiency is high, will not damage wiring board, be tested suitable for production line continuity from above.

Description

A circuit board function test device

technical field

The utility model relates to a circuit board function testing device.

Background technique

Performance testing is an important part of the production process of integrated circuit boards. In the prior art, manual testing is usually used or testing with the help of certain tooling and testing equipment to determine whether the relevant performance of the product meets the requirements.

The Chinese patent application publication number CN104793122A discloses a circuit board function testing device, which includes: a test needle bed, the circuit board to be tested is set correspondingly to the test needle bed; a pressing device is opposite to the test needle bed Set, and press the circuit board to be tested on the test needle bed; the detection system is connected to the circuit board to be tested, and the circuit board to be tested is automatically detected.

However, some circuit boards are welded with electronic components and wires on the surface. When using the above test equipment for testing, fixing the circuit board by applying pressure is very easy to damage the electronic components and wires on the circuit board, or even make them fall off. Thereby its use has certain limitation, needs further improvement.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a circuit board function test device, which has the advantages of being suitable for performing function tests on circuit boards soldered with electronic components and stably fixing the loading tray.

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

A circuit board function testing device, comprising a U-shaped frame, the U-shaped frame is provided with a conveyor belt for transmitting a loading tray, and also includes a loading tray fixing mechanism, a driving mechanism, a testing mechanism, and a sensing mechanism; The loading tray fixing mechanism includes an upper template and a lower template, the bottom surface of the upper template is fixedly provided with at least three positioning columns, the top surface of the lower template is provided with positioning holes for the insertion of the positioning columns, and the upper template is also provided with limited position piece; the drive mechanism is used to generate push-pull power to drive the upper template and the lower template to approach or separate; the test mechanism is arranged on one side of the U-shaped frame for performing performance tests on the circuit board on the loading tray Detection: the sensing mechanism is used to sense the position signal of the object tray, and is connected with the driving mechanism.

By adopting the above technical scheme, the utility model is suitable for performing functional tests on circuit boards in a continuous circuit board production line. The circuit board to be tested needs to be fixed on the loading tray provided with reserved holes. When the object tray moves to the object tray fixing mechanism along with the conveyor belt, the sensing mechanism can detect the position information of the object tray, and then control the driving mechanism to work. The driving mechanism generates push-pull power to make the upper template and the lower template close to each other. The positioning column on the upper template passes through the reserved hole on the loading plate and inserts it into the positioning hole on the lower template, so that the loading tray is fixed on the upper template and the lower template. Between the templates, under the cooperation of the limiting parts, there is a certain gap between the upper template and the lower template, which will not damage the circuit board on the loading tray. At this time, the function of the circuit board can be tested by using the testing mechanism. After the test is completed, the driving mechanism drives the upper template and the lower template to separate, the loading tray continues to move, and the next loading tray moves between the upper template and the lower template, thereby realizing continuous testing of circuit boards in the production line, which greatly improves Test efficiency. Using the testing device of the utility model for functional testing has the advantages of not damaging electronic components on the circuit board, firmly fixing the object tray, being suitable for continuity testing, and having high testing efficiency.

Further, the drive mechanism includes a first cylinder arranged on the top surface of the upper template and a second cylinder arranged on the bottom surface of the lower template, the movable end of the first cylinder is fixedly connected with the upper template, and the movable end of the second cylinder It is fixedly connected with the lower template; the first cylinder and the second cylinder work synchronously.

By adopting the above technical scheme, the power of the cylinder is sufficient, and the installation and control are convenient. With the cooperation of the first cylinder and the second cylinder, the upper template and the lower template can be intermittently approached or separated.

Further, the limiting member is a limiting rod arranged parallel to the positioning post, and the length of the limiting rod is shorter than that of the positioning post.

By adopting the above-mentioned technical scheme, when the limit bar which is shorter than the positioning column and arranged in parallel with the positioning column is close to each other, the limit bar and the loading tray are offset. On the one hand, the upper template and the loading tray are There is a certain space between them, which will not damage the circuit board. On the other hand, it can be pressed against the loading tray, which further increases the stability of fixing the loading tray.

Further, a guide portion is provided at the end of the positioning column away from the upper template.

By adopting the above technical solution, the guide part makes it easier for the positioning column to be inserted into the reserved hole on the loading tray and the positioning hole on the lower formwork, so that the position of the loading tray on the lower formwork is not easily shifted.

Further, the guide part is hemispherical.

By adopting the above technical solution, the guide part is set in a hemispherical shape, which is not easy to scratch the loading plate, and makes it easier for the positioning column to be inserted into the reserved hole on the loading plate and the positioning hole on the lower template.

Further, the detection mechanism includes a third cylinder, a fixed plate and a probe, the fixed plate is fixed on the movable end of the third cylinder, and the probe is fixed on the fixed plate perpendicular to the length direction of the U-shaped frame superior.

By adopting the above technical solution, driven by the third cylinder, the probe can move along with the fixed plate in a direction perpendicular to the length of the U-shaped frame. During the test, the probe moves toward the loading tray and is inserted into the coil on the circuit board product to detect the electromagnetic field signal generated by the current flowing through the product coil; after the test is completed, the third cylinder drives the fixed plate to drive the probe back.

Further, the sensing mechanism includes an infrared sensor.

By adopting the above technical solution, the infrared sensor has a compact structure and is easy to install, and can quickly detect whether the loading tray has moved to a designated position by using the infrared sensor.

Further, a baffle and a fourth cylinder are arranged inside the U-shaped frame, and the baffle is fixedly arranged at the movable end of the fourth cylinder.

By adopting the above-mentioned technical scheme, when the loading tray moves between the upper template and the lower template, under the blocking action of the baffle, the reserved holes on the loading tray can be just aligned with the positioning columns on the upper template, and the deviation is not easy to occur. shift. After the test is completed, the fourth cylinder drives the baffle to move down, so as not to hinder the carrying tray from continuing to move with the conveyor belt.

In summary, the utility model has the following beneficial effects:

1. The upper formwork with positioning columns, the loading plate with reserved holes and the lower formwork with positioning holes cooperate with each other to fix the loading plate firmly and facilitate the circuit board on the loading plate. Functional test without damaging the circuit board;

2. The limit rod on the upper template further increases the stability of fixing the loading tray, and at the same time leaves a space between the upper template and the loading tray, which will not damage the electronic components on the circuit board to be tested;

3. The probe set on the fixed plate and driven by the third cylinder cooperates with the fixed mechanism, the driving mechanism and the sensing mechanism to quickly complete the performance test of the circuit board. It is suitable for the continuity test operation on the production line and has high test efficiency. .

Description of drawings

Fig. 1 is a structural schematic diagram 1 of circuit board function testing device in the embodiment;

Fig. 2 is the structure schematic diagram two of circuit board functional testing device in the embodiment;

Fig. 3 is an enlarged view of part A in Fig. 2;

Fig. 4 is the structure schematic diagram three of circuit board function testing device in the embodiment;

FIG. 5 is an enlarged view of part B in FIG. 4 .

In the figure: 1. U-shaped frame; 11. Conveyor belt; 12. Load tray; 121. Reserved hole; 2. Mounting frame; 3. Upper template; 31. Positioning column; 311. Guide part; 32. Limit Rod; 4, lower template; 41, positioning hole; 5, first cylinder; 6, second cylinder; 7, testing mechanism; 71, third cylinder; 72, fixed plate; 73, probe; 8, infrared sensor ; 9, baffle plate; 91, the fourth cylinder.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Example:

A circuit board function testing device, with reference to Fig. 1, it comprises a U-shaped frame 1, the inner side of the U-shaped frame 1 is provided with a conveyor belt 11 for transmitting a loading tray 12 along its length direction, and the conveyor belt 11 is located at the U-shaped frame 1 opening. Both sides of the loading tray 12 are respectively placed on two conveyor belts 11, and can move along the U-shaped frame 1 along with the conveyor belts 11. Each loading tray 12 is provided with four reserved holes 121 , and the reserved holes 121 are respectively located at the four corners of the loading tray 12 .

Referring to FIG. 1 , a U-shaped frame 1 is provided with a mounting frame 2 , and a first cylinder 5 is fixedly mounted on the mounting frame 2 . The movable end of the first cylinder 5 is fixedly arranged on the top surface of the upper formwork 3, and the lower formwork 4 corresponding to the upper formwork 3 is arranged in the U-shaped frame 1, and the four corners of the lower formwork 4 are all provided with positioning holes 41.

Referring to FIG. 2 , a second air cylinder 6 is arranged in the U-shaped frame 1 , and the movable end of the second air cylinder 6 is fixedly connected with the lower template 4 .

Referring to Fig. 1 and Fig. 2, the bottom surface of the upper formwork 3 is provided with four positioning columns 31 corresponding to the positioning holes 41, and each positioning column 31 is provided with a limiting rod 32 as a limiting member.

Referring to FIG. 3 , the limiting rod 32 is arranged parallel to the positioning post 31 and has a length shorter than that of the positioning post 31 . A hemispherical guide portion 311 is provided at an end of each positioning column 31 away from the upper template 3 .

Referring to FIG. 4 and FIG. 5 , a fourth air cylinder 91 is further arranged in the U-shaped frame 1 , and an L-shaped baffle plate 9 is fixedly arranged on the movable end of the fourth air cylinder 91 . The fourth cylinder 91 pushes against the baffle 9 and moves up to the upper display. The baffle 9 is flush with the opening of the U-shaped frame 1 and can block the loading tray 12 moving towards the baffle 9 .

Referring to FIG. 4 and FIG. 5 , the same side of the U-shaped frame 1 is also provided with a testing mechanism 7 and a sensing mechanism, and the sensing mechanism includes an infrared sensor 8 arranged on the U-shaped frame 1 . The position information of the object tray 12 can be detected by the infrared sensor 8 to determine whether there is an object tray 12 moving to the testing mechanism 7 .

Referring to FIG. 4 and FIG. 5 , the measuring mechanism includes a third cylinder 71 , a fixing plate 72 and a probe 73 for detecting the electromagnetic field signal generated by the current flowing through the coil of the circuit board product. The fixed plate 72 is provided on the movable end of the third cylinder 71 . Probes 73 are arranged in groups of two on the fixed plate 72 in parallel, and the length direction of the probes 73 is perpendicular to the length direction of the U-shaped frame 1 .

It works as follows:

The fourth cylinder 91 pushes against the baffle plate 9 and moves up to be flush with the opening of the U-shaped frame 1 . Under the transmission of the conveyor belt 11, the object tray 12 loaded with the circuit board to be detected moves to the measuring mechanism place. The position is aligned with the positioning hole 41 on the lower template 4. After the infrared sensor 8 detects the position signal of the object tray 12, the first air cylinder 5 and the second air cylinder 6 work simultaneously. The lower template 4 moves upward to support the loading tray 12, and the upper template 3 moves downward to move closer to the lower template 4. The positioning column 31 on the upper template 3 is inserted into the positioning hole 41 on the lower template 4 after passing through the reserved hole 121 on the loading tray 12 , thereby limiting the movement of the loading tray 12 on the lower template 4 . When the upper formwork 3 moves down to the limit position, the end of the limit rod 32 just abuts against the loading tray 12, which further increases the stability of the loading tray 12 being fixed. At this time, there is a gap between the upper template 3 and the loading tray 12, which will not damage the electronic components on the circuit board. Driven by the third air cylinder 71 , the fixed plate 72 drives the probe 73 to move toward the loading tray 12 . The probe 73 is inserted into the coil on the circuit board to measure the magnetic field signal of the coil, thereby completing the function test of the circuit board. After the test is completed, the fourth cylinder 91 drives the baffle plate 9 to move down, and the loading tray 12 continues to move along with the conveyor belt 11 . Using the circuit board testing device of the utility model to perform functional tests on circuit boards has the advantages of firmly fixing the loading tray 12, high testing efficiency, no damage to circuit boards, and being suitable for continuity testing on production lines.

The above-mentioned specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution according to needs after reading this specification, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of circuit board function test device, including U-shaped rack (1), it is provided on the U-shaped rack (1) and is used for transmission load The conveyer belt (11) of object disk (12), it is characterised in that：Further include carrying disk fixed mechanism, driving mechanism, mechanism for testing (7) and sense Answer mechanism；The carrying disk fixed mechanism includes cope plate (3) and lower template (4), and cope plate (3) bottom surface is fixedly installed At least three positioning columns (31), the top surface of the lower template (4) is provided with the location hole (41) being inserted into for positioning column (31), described Cope plate is additionally provided with locating part on (3)；The driving mechanism is for generating push-and-pull power to drive cope plate (3) and lower template (4) close to each other or separation；The mechanism for testing (7) is set to the side of U-shaped rack (1), for carrying disk (12) Wiring board carry out performance detection；The induction mechanism is used to incude the position signals of carrying disk (12), and with driving mechanism phase Connection.

2. a kind of circuit board function test device according to claim 1, it is characterised in that：The driving mechanism includes setting It sets in first cylinder (5) of cope plate (3) top surface and setting in second cylinder (6) of lower template (4) bottom surface, first cylinder (5) movable end is fixedly connected with cope plate (3), and the movable end of second cylinder (6) is fixedly connected with lower template (4)；Institute State the first cylinder (5) and the second cylinder (6) synchronous working.

3. a kind of circuit board function test device according to claim 1, it is characterised in that：The locating part be and positioning Column (31) gag lever post disposed in parallel (32), and the length for being shorter in length than positioning column (31) of gag lever post (32).

4. a kind of circuit board function test device according to claim 3, it is characterised in that：The positioning column (31) is separate One end of cope plate (3) is provided with guide part (311).

5. a kind of circuit board function test device according to claim 4, it is characterised in that：The guide part (311) is in Dome-type.

6. a kind of circuit board function test device according to claim 1, it is characterised in that：Mechanism for testing (7) packet Third cylinder (71), fixed plate (72) and probe (73) are included, the fixed plate (72) is fixed at the work of third cylinder (71) On moved end, the probe (73) is fixed at perpendicular to U-shaped rack (1) length direction in fixed plate (72).

7. a kind of circuit board function test device according to claim 1, it is characterised in that：The induction mechanism includes red Outside line inductor (8).

8. a kind of circuit board function test device according to claim 1, it is characterised in that：It is set in the U-shaped rack (1) It is equipped with baffle (9) and the 4th cylinder (91), the baffle (9) is fixed at the movable end of the 4th cylinder (91).