CN219224876U

CN219224876U - Fixing jig for needle flying machine

Info

Publication number: CN219224876U
Application number: CN202223455766.8U
Authority: CN
Inventors: 贺国彧
Original assignee: Kunshan Jingmei Electronic Technology Co ltd
Current assignee: Kunshan Jingmei Electronic Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-20
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses a fixing jig for a flying needle machine, which comprises a cover plate and a carrier plate, wherein a plurality of carrying cavities are uniformly formed in the surface of the carrier plate, a PCB (printed circuit board) is placed in each carrying cavity, a detection port matched with each carrying cavity is formed in the cover plate, and the cover plate is detachably connected with the carrier plate; the bottom fixed mounting of support plate has the carrier bar, the carrier bar is located bear the axis of chamber, the carrier bar with bear and be formed with two symmetrical board mouths of getting between the portion, the lateral wall fixed mounting who bears the chamber has a plurality of limiting plates, one side of limiting plate with bear the lateral wall in chamber and link to each other, the opposite side of limiting plate with the PCB board is contradicted. According to the PCB detection device, the PCB is fixed between the carrier bar and the cover plate through the carrier bar, the carrier bar and the cover plate, and the PCB is limited by utilizing the carrier bar, so that the PCB can be conveniently detected by the flying probe machine.

Description

Fixing jig for needle flying machine

Technical Field

The utility model belongs to the technical field of needle flying machines, and particularly relates to a fixing jig for a needle flying machine.

Background

The flying probe tester is used for testing the circuit board, and is divided into two main types, namely testing the PCB and testing the PCBA. A flying probe tester for testing a PCB (printed circuit board) is an instrument for testing a PCB with high-density component arrangement, multiple layers, large wiring density and small measuring point distance, mainly tests insulation and conduction values of a circuit board, and can monitor a testing process and fault points in real time by adopting a true value comparison positioning method, so that the testing accuracy is ensured. The flying probe tester for testing PCBA mainly performs electrical tests on the values, electrical characteristics and the like of electronic components.

When testing the small-size PCB, the common fixture cannot guarantee that all hole positions of the PCB are exposed while the PCB is clamped stably, so that the test of the flying probe machine is facilitated.

In order to overcome the defects, the skilled in the art is actively researched to create a fixing jig for the needle flying machine.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the fixing jig for the needle machine, and solves the problem that a small-size PCB (printed circuit board) cannot be directly tested by the needle machine due to small size.

In order to solve the technical problems, the utility model adopts a technical scheme that: the PCB comprises a cover plate and a carrier plate, wherein a plurality of bearing cavities are uniformly formed in the surface of the carrier plate, a PCB is placed in each bearing cavity, a detection port matched with each bearing cavity is formed in the cover plate, and the cover plate is detachably connected to the carrier plate;

the bottom of the carrier plate is fixedly provided with a carrier bar, the carrier bar is positioned on the axis of the bearing cavity, two symmetrical plate taking openings are formed between the carrier bar and the bearing cavity, the side wall of the bearing cavity is fixedly provided with a plurality of limiting plates, one side of each limiting plate is connected with the side wall of the bearing cavity, and the other side of each limiting plate is in contact with the PCB;

the lateral wall of detection mouth is last fixed mounting has the clamp plate, the lateral wall of clamp plate is the arc, the top of clamp plate lateral wall with the top coincidence of detection mouth lateral wall.

Further, the cross section of the carrier strip is in an inverted triangle shape, and the lower surface of the PCB is attached to the upper surface of the carrier strip.

Further, the lower surface of the cover plate is fixedly provided with a fixed column, the carrier plate is provided with a through hole matched with the fixed column, the fixed column is connected with the through hole in a sliding mode, a cavity is formed in the fixed column, and a locking mechanism is arranged in the cavity.

Further, the locking mechanism comprises a group of symmetrically arranged locking plates, sliding holes are formed in the side walls of the fixing columns, the locking plates are connected to the sliding holes in a sliding mode, and the two locking plates are connected through springs.

Further, the cross section of the locking plate is an inverted right trapezoid, and when the cover plate is attached to the carrier plate, the upper surface of the locking plate is abutted to the lower surface of the carrier plate.

Further, the four inner corners of the pressing plate, the four inner corners of the bearing cavity and the four corners of the carrier strip are rounded.

Further, the number of the bearing cavities is 12, and the bearing cavities are arranged on the carrier plate in an upper row and a lower row.

The beneficial effects of the utility model are at least as follows:

according to the jig, the carrier plate and the cover plate are arranged, the PCB is prevented from being pressed on the carrier plate by the cover plate, the carrier strip is arranged at the bottom of the carrier plate, the PCB is placed on the carrier strip, the board taking opening is arranged between the carrier strip and the carrying cavity, the PCB is taken out of the carrier plate through the board taking opening, and the jig is integrated in that all inner angles of the carrier plate and the cover plate are round angles, and the whole jig is not easy to damage the PCB when the PCB is taken out and placed by the design of the round angles;

according to the utility model, through the design of the fixing column and the through hole, the cover plate and the carrier plate are mutually fixed through the locking mechanism in the fixing column, after the PCB is fixed in the jig, a user can conveniently carry the whole jig, and then the PCB is detected through the flying needle machine.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the bottom part of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

the parts in the drawings are marked as follows:

1 apron, 11 detection mouth, 12 clamp plates, 2 carrier plates, 21 bear the weight of chamber, 22 through-holes, 23 carrier bars, 24 get board mouth, 25 limiting plate, 3PCB boards, 4 fixed columns, 41 locking plates, 42 slide holes, 43 springs.

Description of the embodiments

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Examples: the utility model provides a fly needle machine fixed tool, shown as fig. 1, includes apron 1 and carrier plate 2, a plurality of bears the chamber 21 has evenly been seted up on the surface of carrier plate, bear the intracavity and placed PCB board 3, set up on the apron with bear chamber assorted detection mouth 11, the apron can dismantle connect in the carrier plate detects, separates apron and carrier plate, then just places on the carrier plate according to the PCB board, is overlapping carrier plate and apron together, fixes whole tool on fly needle machine to test the PCB board.

Further, as shown in fig. 3, the fixing column 4 is fixedly mounted on the lower surface of the cover plate, the carrier plate is provided with a through hole matched with the fixing column, the fixing column is slidably connected to the through hole 22, a cavity is formed in the fixing column, and a locking mechanism is mounted in the cavity, so that when the cover plate is attached to the carrier plate, the cover plate and the carrier plate are locked through the locking mechanism, and the PCB board in the carrier plate is prevented from shaking when the carrier jig is carried.

The locking mechanism comprises a group of symmetrically arranged locking plates 41, sliding holes 42 are formed in the side walls of the fixing columns, the locking plates are slidably connected to the sliding holes, the cross sections of the locking plates are inverted right trapezoid, when the cover plates are attached to the carrier plates, the upper surfaces of the locking plates are in contact with the lower surfaces of the carrier plates, the cover plates and the carrier plates are pressed through the locking plates, the two locking plates are connected through springs 43, and the locking plates are guaranteed to be reset after being pressed through the springs.

As shown in fig. 2, the bottom of the carrier plate is fixedly provided with a carrier bar 23, the carrier bar is positioned on the axis of the bearing cavity, the cross section of the carrier bar is in an inverted triangle shape, the lower surface of the PCB plate is attached to the upper surface of the carrier bar, and the inverted triangle shape is convenient for the subsequent removal of the PCB plate from the carrier plate. Two symmetrical plate taking openings 24 are formed between the carrier bars and the bearing cavity, a plurality of limiting plates 25 are fixedly arranged on the side walls of the bearing cavity, one sides of the limiting plates are connected with the side walls of the bearing cavity, the other sides of the limiting plates are in contact with the PCB, and the limiting bars are used for limiting the horizontal movement of the PCB.

The lateral wall of detection mouth is last fixed mounting has clamp plate 12, and the clamp plate encircles the detection mouth setting, the lateral wall of clamp plate is the arc, the top of clamp plate lateral wall with the top coincidence of detection mouth lateral wall, when apron and carrier plate laminating, the lower surface of clamp plate and the upper surface laminating of PCB board.

The four inner corners of the pressing plate, the four inner corners of the bearing cavity and the four corners of the carrying strip are all round corners.

Further, the number of the bearing cavities is 12, the bearing cavities are arranged on the carrier plate in an upper row and a lower row, and 12 PCB boards can be placed on one jig at the same time, so that the testing efficiency is improved.

The working principle of the utility model is as follows:

when the fixing device is used, the PCB is placed on the carrier bar, each side wall of the PCB is guaranteed to be in contact with the limiting plate, the fixing column is inserted into the through hole, the locking sheets are extruded along with the process that the fixing column is inserted into the through hole, the two locking sheets are close to each other, when the topmost end of each locking sheet passes through the through hole, the spring releases elasticity, the locking sheets are reset, and the upper surfaces of the locking sheets are in contact with the lower surface of the carrier plate, so that the carrier plate and the cover plate are fixed together.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.

Claims

1. The utility model provides a fly needle machine fixed tool which characterized in that: the PCB comprises a cover plate and a carrier plate, wherein a plurality of bearing cavities are uniformly formed in the surface of the carrier plate, a PCB is placed in each bearing cavity, a detection port matched with each bearing cavity is formed in the cover plate, and the cover plate is detachably connected to the carrier plate;

2. The fixture for a flying needle machine according to claim 1, wherein: the cross section of the carrier strip is inverted triangle, and the lower surface of the PCB is attached to the upper surface of the carrier strip.

3. The fixture for a flying needle machine according to claim 1, wherein: the lower surface fixed mounting of apron has the fixed column, set up on the support plate with fixed column assorted through-hole, fixed column sliding connection in the through-hole, set up the cavity in the fixed column, install locking mechanism in the cavity.

4. The fixture for a flying probe machine according to claim 3, wherein: the locking mechanism comprises a group of symmetrically arranged locking plates, sliding holes are formed in the side walls of the fixed columns, the locking plates are connected to the sliding holes in a sliding mode, and the two locking plates are connected through springs.

5. The fixture for a flying probe machine according to claim 4, wherein: the cross section of the locking plate is in an inverted right trapezoid shape, and when the cover plate is attached to the carrier plate, the upper surface of the locking plate is in contact with the lower surface of the carrier plate.

6. The fixture for a flying needle machine according to claim 1, wherein: the four inner corners of the pressing plate, the four inner corners of the bearing cavity and the four corners of the carrying strip are all round corners.

7. The fixture for a flying needle machine according to claim 1, wherein: the number of the bearing cavities is 12, and the bearing cavities are arranged on the carrier plate in an upper row and a lower row.