CN106597258B

CN106597258B - Drawer type PCB test fixture

Info

Publication number: CN106597258B
Application number: CN201611194589.9A
Authority: CN
Inventors: 王磊; 周小伟; 罗毅; 丁辉; 陈焕强
Original assignee: Zhuhai Jingshi Measurement And Control Technology Co ltd
Current assignee: Zhuhai Jingshi Measurement And Control Technology Co ltd
Priority date: 2016-12-22
Filing date: 2016-12-22
Publication date: 2023-03-21
Anticipated expiration: 2036-12-22
Also published as: CN106597258A

Abstract

The invention discloses a drawer type PCB test fixture, and aims to provide a drawer type PCB test fixture which is convenient to operate, high in precision and capable of reducing labor intensity of workers. The PCB testing device comprises a base plate, a testing bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are fixedly arranged on the base plate, the left side plate and the right side plate are respectively positioned at two sides of the testing bottom plate, the two sides of the testing bottom plate are respectively connected with the left side plate and the right side plate in a sliding manner, and a PCB tooling block is fixedly arranged on the testing bottom plate; still be provided with bottom plate hold-down mechanism on the base plate, the left side board with right side board upper end is provided with the mounting panel, be provided with on the mounting panel with be located the PCB to be awaited measuring looks adaptation's of PCB frock block to the draw-in groove mechanism, just be located on the base plate test bottom plate rear still is provided with accredited testing organization. The invention is applied to the technical field of drawer type PCB test clamps.

Description

Drawer type PCB test fixture

Technical Field

The invention relates to a PCB test fixture, in particular to a drawer type PCB test fixture.

Background

With the progress of internet technology, more and more kinds of electronic products are coming into the market. For manufacturers of electronic products, the detection efficiency and accuracy of the PCB are very important. In the present situation, many enterprises are still using simple tools, such as a quick clamp to fix a PCB. For the increasing demands of the market on the circuit boards, an efficient and accurate automatic device is needed to improve the detection efficiency.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the drawer type PCB test fixture which is convenient to operate, high in precision and capable of reducing the labor intensity of workers.

The technical scheme adopted by the invention is as follows: the PCB testing device comprises a base plate, a testing bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are fixedly arranged on the base plate, the left side plate and the right side plate are respectively positioned at two sides of the testing bottom plate, two sides of the testing bottom plate are respectively connected with the left side plate and the right side plate in a sliding mode, and a PCB tooling block is fixedly arranged on the testing bottom plate; the base plate is further provided with a base plate pressing mechanism, the base plate pressing mechanism comprises a limiting seat, the limiting seat is located behind the testing base plate, a bayonet matched with the rear end of the testing base plate is arranged on the limiting seat, a first locking hole is formed in the upper end of the bayonet, a second locking hole corresponding to the first locking hole is formed in the rear end of the testing base plate, a locking air cylinder is arranged above the bayonet, and a locking pin matched with the first locking hole and the second locking hole is arranged at the output end of the locking air cylinder; the limiting seat is also provided with a guide pin matched with the guide hole at the rear end of the test bottom plate, and a spring is arranged between the guide pin and the limiting seat; the left side board with right side board upper end is provided with the mounting panel, be provided with on the mounting panel with be located the PCB looks adaptation's of awaiting measuring in the PCB frock block to the draw-in groove mechanism, just be located on the base plate test bottom plate rear still is provided with accredited testing organization.

Further, a sensor is arranged on the limiting seat, and when the sensor detects that the test bottom plate is in place, the locking cylinder pushes the lock pin into the first lock hole and the second lock hole.

Further, the to draw-in groove mechanism is including setting up to draw-in groove cylinder on the mounting panel, be provided with the test circuit board to the output of draw-in groove cylinder, when exporting the draw-in groove cylinder downwards, the golden finger of test circuit board inserts in the draw-in groove of the PCB that awaits measuring.

Further, the testing mechanism comprises a testing cylinder arranged on the substrate and a testing clamping groove arranged at the output end of the testing cylinder, and when the testing cylinder outputs forwards, the testing clamping groove is inserted into a golden finger of the PCB to be tested.

Further, still be provided with PCB board hold-down mechanism on the mounting panel, PCB board hold-down mechanism is including setting up compress tightly the cylinder on the mounting panel, the output that compresses tightly the cylinder is provided with the ejector pad, the ejector pad lower extreme is provided with compact heap and the spacing vaulting pole of a plurality of, be equipped with on the PCB frock piece with a plurality of the guiding hole of spacing vaulting pole looks adaptation, when compressing tightly the cylinder exports downwards, a plurality of spacing vaulting pole inserts guiding hole on the PCB frock piece, works as when spacing vaulting pole targets in place, there is narrow and small clearance compact heap and the upper surface of the PCB that awaits measuring.

Further, the distance of the narrow gap is 0.5mm to 1mm.

The beneficial effects of the invention are: the PCB testing device adopts a drawer type design and comprises a base plate, a testing bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are fixedly arranged on the base plate, the left side plate and the right side plate are respectively positioned at two sides of the testing bottom plate, two sides of the testing bottom plate are respectively connected with the left side plate and the right side plate in a sliding manner, and a PCB tooling block is fixedly arranged on the testing bottom plate; the base plate is also provided with a base plate pressing mechanism, the base plate pressing mechanism comprises a limiting seat, the limiting seat is positioned behind the testing base plate, a bayonet matched with the rear end of the testing base plate is arranged on the limiting seat, a first lock hole is arranged at the upper end of the bayonet, a second lock hole corresponding to the first lock hole is arranged at the rear end of the testing base plate, a locking cylinder is arranged above the bayonet, and a lock pin matched with the first lock hole and the second lock hole is arranged at the output end of the locking cylinder; the limiting seat is also provided with a guide pin matched with the guide hole at the rear end of the test bottom plate, and a spring is arranged between the guide pin and the limiting seat; the PCB testing device comprises a PCB tool block, a testing bottom plate, a left side plate, a right side plate, a testing mechanism and a clamping groove mechanism, wherein the testing bottom plate is arranged on the testing bottom plate, the left side plate and the right side plate are provided with the mounting plate, the clamping groove mechanism matched with a PCB to be tested and positioned in the PCB tool block is arranged on the mounting plate, and the testing mechanism is arranged on the base plate and positioned behind the testing bottom plate. Compared with the traditional manual butt joint of the clamping groove and the position detection of the golden finger, the invention greatly reduces the consumption of manpower and material resources and brings considerable economic benefits to enterprises. And the detection accuracy of the product is guaranteed, and the damage of a PCB (printed Circuit Board) and the failure of detection data caused by manual operation are avoided. In addition, compared with some open-close type PCB test fixture equipment in the market, the open-close type PCB test fixture is more labor-saving, and can reduce the labor intensity of the operation of staff. And long-term opening and closing causes the hinge to be seriously abraded, so that the vertical positioning error is increased, and the use precision of the equipment is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the bottom plate pressing mechanism;

fig. 3 is a schematic structural view of the PCB board pressing mechanism;

FIG. 4 is a schematic structural view of the slot aligning mechanism;

fig. 5 is a schematic structural diagram of the testing mechanism.

Detailed Description

As shown in fig. 1 and fig. 2, in this embodiment, the present invention includes a substrate 1, a testing bottom plate 2, a left side plate 3 and a right side plate 4, where the left side plate 3 and the right side plate 4 are fixedly disposed on the substrate 1, the left side plate 3 and the right side plate 4 are respectively located at two sides of the testing bottom plate 2, two sides of the testing bottom plate 2 are respectively connected with the left side plate 3 and the right side plate 4 in a sliding manner, and a PCB fixture block 5 is fixedly disposed on the testing bottom plate 2; a base plate pressing mechanism is further arranged on the base plate 1 and comprises a limiting seat 6, the limiting seat 6 is located behind the testing base plate 2, a bayonet 7 matched with the rear end of the testing base plate 2 is arranged on the limiting seat 6, a first lock hole 8 is arranged at the upper end of the bayonet 7, a second lock hole 9 corresponding to the first lock hole 8 is arranged at the rear end of the testing base plate 2, a locking air cylinder 10 is arranged above the bayonet 7, and a lock pin matched with the first lock hole 8 and the second lock hole 9 is arranged at the output end of the locking air cylinder 10; the limiting seat 6 is also provided with a guide pin 11 matched with a guide hole at the rear end of the test bottom plate 2, and a spring is arranged between the guide pin 11 and the limiting seat 6; the left side board 3 with the 4 upper ends of right side board are provided with mounting panel 12, be provided with on the mounting panel 12 with be located the examination PCB looks adaptation that awaits measuring in the PCB frock piece 5 to the draw-in groove mechanism, just be located on the base plate 1 the 2 rear of test bottom plate still are provided with accredited testing organization.

In this embodiment, a sensor 13 is further disposed on the limiting seat 6, and when the sensor 13 detects that the testing base plate 2 is in place, the locking cylinder 10 pushes the lock pin into the first lock hole 8 and the second lock hole 9.

In this embodiment, as shown in fig. 4, the slot aligning mechanism includes a slot aligning cylinder 14 disposed on the mounting plate 12, a test circuit board 15 is disposed at an output end of the slot aligning cylinder 14, and when the slot aligning cylinder 14 outputs downward, a gold finger of the test circuit board 15 is inserted into a slot of a PCB to be tested.

In this embodiment, as shown in fig. 5, the testing mechanism includes a testing cylinder 16 disposed on the substrate 1 and a testing card slot 17 disposed at an output end of the testing cylinder 16, and when the testing cylinder 16 outputs forward, the testing card slot 17 is inserted into a gold finger of a PCB to be tested.

In this embodiment, as shown in fig. 3, a PCB pressing mechanism is further disposed on the mounting plate 12, the PCB pressing mechanism includes a pressing cylinder 18 disposed on the mounting plate 12, an output end of the pressing cylinder 18 is provided with a push block 19, a lower end of the push block 19 is provided with a pressing block 20 and a plurality of limiting support rods 21, guide holes adapted to the plurality of limiting support rods 21 are disposed on the PCB fixture block 5, when the pressing cylinder 18 outputs downward, the plurality of limiting support rods 21 are inserted into the guide holes on the PCB fixture block 5, and when the limiting support rods 21 are inserted in place, a narrow gap is formed between the pressing block 20 and an upper surface of a PCB to be tested. In this embodiment, the distance of the narrow gap is 0.5mm to 1mm. When the golden finger of the PCB to be tested is positioned, the PCB to be tested cannot be tilted, meanwhile, the pressing block 20 cannot be extruded to the PCB to be tested, and therefore the PCB to be tested cannot be subjected to dark cracking.

When the sensor 13 detects that the test base plate 2 is in place, the locking cylinder 10 pushes the lock pin into the first lock hole 8 and the second lock hole 9; then the pressing mechanism acts, and the pressing block 20 presses the PCB to be tested; the pair of card slot air cylinders 14 outputs downwards, and a golden finger of the circuit board 15 for testing is inserted into a card slot of a PCB to be tested; the test cylinder 16 outputs forward, and the test card slot 17 is inserted into a golden finger of a PCB to be tested for testing. After all operations are completed, the test cylinder 16, to draw-in groove cylinder 14, the locking cylinder 10 loosens in proper order, then the compact heap 20 loosens again, the test bottom plate 2 leans on the spring force of the spring of uide pin 11 outwards releases a small segment distance, can take out the PCB board, and easy operation is laborsaving, only need push into an action and can accomplish the test, and stability is good, and the location of each point is all very clear, and the test result failure rate is low.

The invention is applied to the technical field of PCB test fixtures.

While the embodiments of the present invention have been described in terms of practical embodiments, they are not to be construed as limiting the meaning of the present invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims

1. A drawer type PCB test fixture is characterized in that: the drawer type PCB test fixture comprises a base plate (1), a test bottom plate (2), a left side plate (3) and a right side plate (4), wherein the left side plate (3) and the right side plate (4) are fixedly arranged on the base plate (1), the left side plate (3) and the right side plate (4) are respectively positioned at two sides of the test bottom plate (2), two sides of the test bottom plate (2) are respectively in sliding connection with the left side plate (3) and the right side plate (4), and a PCB tooling block (5) is fixedly arranged on the test bottom plate (2); the base plate (1) is further provided with a base plate pressing mechanism, the base plate pressing mechanism comprises a limiting seat (6), the limiting seat (6) is located behind the testing base plate (2), a bayonet (7) matched with the rear end of the testing base plate (2) is arranged on the limiting seat (6), a first lock hole (8) is formed in the upper end of the bayonet (7), a second lock hole (9) corresponding to the first lock hole (8) is formed in the rear end of the testing base plate (2), a locking air cylinder (10) is arranged above the bayonet (7), and a lock pin matched with the first lock hole (8) and the second lock hole (9) is arranged at the output end of the locking air cylinder (10); the limiting seat (6) is also provided with a guide pin (11) matched with a guide hole at the rear end of the test bottom plate (2), and a spring is arranged between the guide pin and the limiting seat (6); an installation plate (12) is arranged at the upper ends of the left side plate (3) and the right side plate (4), a groove aligning mechanism matched with a PCB to be tested in the PCB tooling block (5) is arranged on the installation plate (12), and a testing mechanism is also arranged on the base plate (1) and behind the testing bottom plate (2);

a sensor (13) is further arranged on the limiting seat (6), and when the sensor (13) detects that the test bottom plate (2) is in place, the locking cylinder (10) pushes the lock pin into the first lock hole (8) and the second lock hole (9);

the card slot aligning mechanism comprises a card slot aligning cylinder (14) arranged on the mounting plate (12), a test circuit board (15) is arranged at the output end of the card slot aligning cylinder (14), and when the card slot aligning cylinder (14) outputs downwards, a golden finger of the test circuit board (15) is inserted into a card slot of a PCB to be tested;

the testing mechanism comprises a testing cylinder (16) arranged on the substrate (1) and a testing clamping groove (17) arranged at the output end of the testing cylinder (16), and when the testing cylinder (16) outputs forwards, the testing clamping groove (17) is inserted into a golden finger of a PCB to be tested;

still be provided with PCB board hold-down mechanism on mounting panel (12), PCB board hold-down mechanism is including setting up compress tightly cylinder (18) on mounting panel (12), the output that compresses tightly cylinder (18) is provided with ejector pad (19), ejector pad (19) lower extreme is provided with compact heap (20) and a plurality of spacing vaulting pole (21), be equipped with on PCB frock piece (5) with a plurality of the guiding hole of spacing vaulting pole (21) looks adaptation, when compressing tightly cylinder (18) downward output, a plurality of spacing vaulting pole (21) insert the guiding hole on PCB frock piece (5), work as when spacing vaulting pole (21) are inserted and are in place, compact heap (20) have narrow and small clearance with the upper surface of the PCB that awaits measuring.

2. The drawer type PCB test fixture of claim 1, wherein: the distance of the narrow gap is 0.5mm-1mm.