CN219105095U

CN219105095U - PCBA test fixture based on SKD

Info

Publication number: CN219105095U
Application number: CN202223204329.9U
Authority: CN
Inventors: 许潇振; 韦敏; 曾创培; 王好威; 林振国
Original assignee: Shenzhen Hangsheng Electronic Co Ltd
Current assignee: Shenzhen Hangsheng Electronic Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-30
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a PCBA test fixture based on SKD, which comprises the following components: the machine comprises a frame, a working table surface, a vertical air cylinder, a horizontal air cylinder, an upper needle bed and a lower needle bed, wherein the working table surface is horizontally arranged on the frame, the vertical air cylinder is vertically arranged above the working table surface, the upper needle bed is connected with the vertical air cylinder, the lower needle bed is arranged on the working table surface and used for placing a PCBA single board to be tested, the horizontal air cylinder faces the PCBA single board, and a steel racing joint is arranged at the output end of the horizontal air cylinder. Compared with the prior art, the utility model reduces the manual operation requirement, reduces the PCBA testing cost and improves the PCBA testing quality and testing effect.

Description

PCBA test fixture based on SKD

Technical Field

The utility model relates to the technical field of manufacturing of automobile-mounted video and audio products, in particular to a PCBA (printed circuit board assembly) testing tool based on SKD (stock keeping device).

Background

In the requirements of the automotive electronics industry on the automotive electronics, there is a SKD shipment mode which only requires packaging shipment of the PCBA veneer, and the shipment mode has higher requirements on the test integrity of the PCBA veneer, so that connectors such as power supply, display, signal input and output and the like of the PCBA veneer are required to be connected with respective opponents or wire harnesses, such as a radio antenna, a USB/AUX wire harness, an ISO-36PIN wire harness, a square control, a bluetooth/WIFI module antenna, a GPS antenna and the like, in order to realize functional detection on the PCBA veneer.

Traditional test fixture generally connects the opponent or pencil of corresponding module with the mode of manual butt joint:

1. the Bluetooth/WIFI module antenna and the USB/AUX wire harness are required to be plugged in a hand wiring mode each time;

2. the supporting, fixing and loosening of the main plate are completed by means of a hand-operated vertical pressing table;

3, the butt joint of the ISO-36PIN wire harness and the radio antenna is completed by using a hand-operated horizontal connecting rod, and the PCBA single board is fixed by hand-operated vertical down-pressing rods before each operation;

4. the tool is externally connected with an oscilloscope, a millivoltmeter and the like, and is detected by manually observing the change of the numerical value.

This test mode has the following drawbacks:

1. operators may have missed interfaces, resulting in poor testing;

2. an operator firstly operates the horizontal connecting rod and then operates the vertical pressing rod pressing table to damage the tool;

3. in the process of plugging the wire harness or the hand piece by an operator, other components of the PCBA single board can be damaged due to the fact that the PCBA single board is required to be pressed by hands;

4. the steps of the operation required by operators are complicated;

5. the detection mode is manual detection, and the quality problems of misjudgment, low precision and the like exist.

Disclosure of Invention

The utility model mainly aims to provide a PCBA test fixture based on SKD, which aims to reduce manual operation requirements, reduce PCBA test cost and improve PCBA test quality and test effect.

In order to achieve the above purpose, the utility model provides a PCBA test fixture based on SKD, comprising: the machine comprises a frame, a working table surface, a vertical air cylinder, a horizontal air cylinder, an upper needle bed and a lower needle bed, wherein the working table surface is horizontally arranged on the frame, the vertical air cylinder is vertically arranged above the working table surface, the upper needle bed is connected with the vertical air cylinder, the lower needle bed is arranged on the working table surface and used for placing a PCBA single board to be tested, the horizontal air cylinder faces the PCBA single board, and a steel racing joint is arranged at the output end of the horizontal air cylinder.

According to a further technical scheme, the upper needle bed comprises a connecting plate and an upper needle bed body, the upper needle bed body is fixedly connected below the connecting plate, and the connecting plate is connected with the vertical cylinder.

According to a further technical scheme, an upper limit switch for limiting the lifting in-place travel of the vertical cylinder is arranged at the top of the frame.

According to a further technical scheme, a lower limit switch for limiting the downward pressing in-place travel of the vertical cylinder is arranged on the frame and close to the workbench surface.

According to a further technical scheme, an air pipe interface is arranged on the back face of the frame and is connected with the vertical air cylinder and the horizontal air cylinder.

According to a further technical scheme, a DB interface is arranged on the back surface of the frame adjacent to the air pipe interface.

According to a further technical scheme, a manual confirmation key, a pressing key and an ascending key which are connected with the vertical cylinder are arranged on the rack.

The utility model further provides a technical scheme that the number of the pressing keys is two.

According to a further technical scheme, the stand is further provided with a display panel.

The further technical scheme of the utility model is that the PCBA single board is provided with an ISO-36PIN socket, a GPS antenna socket, a flat cable socket, a USB/AUX socket and a radio antenna socket.

The PCBA testing tool based on the SKD has the beneficial effects that:

1. the manual operation requirement is reduced, and other opponents and connectors are automatically butted only when the display screen flat cable is connected by hand;

2. the operation sequence of the air cylinder is automatically controlled, so that the tool damage caused by improper operation of the traditional manual tool is prevented;

3. the PCBA single board component damage possibly caused by the hand plug wire is avoided;

4. manual operation steps are reduced, and the effects of reducing staff and improving efficiency are achieved;

5. the test judgment is changed from the original manual judgment to the automatic judgment of most equipment read signals, and the automatic judgment of a small part of manual confirmation, so that the shipment quality of the PCBA single board is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a preferred embodiment of a SKD-based PCBA test fixture of the present utility model;

FIG. 2 is a front view of a preferred embodiment of a SKD-based PCBA test fixture of the present utility model;

FIG. 3 is a rear view of a preferred embodiment of the SKD-based PCBA test fixture of the present utility model;

FIG. 4 is a schematic diagram of the details of a work surface of a preferred embodiment of the SKD-based PCBA test fixture of the present utility model.

Reference numerals illustrate:

a frame 1; a work surface 2; a vertical cylinder 3; a horizontal cylinder 4; an upper needle bed 5; a lower needle bed 6; PCBA single board 7; a racing steel joint 8; an ISO-36PIN socket 9; a GPS antenna socket 10; a flat cable socket 11; a USB/AUX socket 12; a radio antenna socket 13; a display panel 14; a manual confirmation key 15; pressing the key 16; a raising key 17; a tracheal interface 18; a DB interface 19; a connection plate 20; an upper needle bed body 21; an upper limit switch 22; a lower limit switch 23.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the utility model provides a PCBA testing tool based on SKD, and a preferred embodiment of the PCBA testing tool based on SKD of the utility model includes a frame 1, a table top 2 mounted on the frame 1, a vertical cylinder 3, a horizontal cylinder 4, an upper needle bed 5 and a lower needle bed 6, wherein the table top 2 is horizontally disposed on the frame 1, the vertical cylinder 3 is vertically disposed above the table top 2, the upper needle bed 5 is connected with the vertical cylinder 3, the lower needle bed 6 is disposed on the table top 2 for placing a PCBA veneer 7 to be tested, the horizontal cylinder 4 is disposed towards the PCBA veneer 7, and an output end of the horizontal cylinder 4 is provided with a steel racing connector 8.

In this embodiment, the PCBA board 7 is provided with an ISO-36PIN socket 9, a GPS antenna socket 10, a flat cable socket 11, a USB/AUX socket 12, and a radio antenna socket 13.

The ISO-36PIN socket 9 is a main interface for inputting and outputting signals of the PCBA single board 7, the probe is connected with the ISO-36PIN socket 9 on the race steel connector 8, the GPS antenna socket 10 is connected with the GPS antenna, the flat cable socket 11 is connected with a flat cable of a display screen panel, the USB/AUX socket 12 is an interface of the PCBA single board 7 externally connected with a USB/AUX wire harness, the embodiment does not use wire harness connection but uses a bottom PIN butt joint probe mode to connect with a radio antenna, and the radio antenna socket 13 is connected with a radio antenna, and the embodiment does not use wire harness but uses a bottom PIN butt joint probe mode to connect with the radio antenna.

The vertical cylinder 3 is used for controlling the upper needle bed 5 to press down, and the upper needle bed 5 is used for fixing the PCBA single board 7 and connecting the Bluetooth/WIFI antenna probe and the GPS antenna probe.

The lower needle bed 6 is used for supporting the PCBA single plate 7 and connecting USB wire harnesses, and the workbench surface 2 is used for fixing the lower needle bed 6.

The horizontal cylinder 4 is used for controlling the racing steel joint 8 to butt against the PCBA single board 7.

The frame 1 is provided with a display panel 14, a manual confirmation key 15, a pressing key 16 and a rising key 17 connected with the vertical cylinder 3.

The display panel 14 is an original display panel 14 of the PCBA single board 7. The number of the pressing keys 16 is two, two hands are required to leave the needle bed, the vertical cylinder 3 can be pressed down by pressing the two pressing keys 16, safety accidents are prevented, and the vertical cylinder 3 can be lifted up by pressing the lifting key 17 after the test is finished. In this embodiment, a part of the functions that need to be manually judged and displayed feed back the OK signal through the manual confirm key.

In this embodiment, the back of the frame 1 is provided with an air pipe interface 18, the air pipe interface 18 is connected with the vertical air cylinder 3 and the horizontal air cylinder 4, and the back of the frame 1 is also provided with a DB interface 19 adjacent to the air pipe interface 18.

The DB interface 19 is used for inputting signals and reading tooling output signals, and preferably, in this embodiment, the DB interface 19 adopts 25 PIN type and 37PIN type for limiting switch signal output, PCBA board 7 power supply voltage input, level signal input, audio signal output, serial port, CAN communication, and the like.

The air pipe interface 18 is connected with the vertical air cylinder 3 and the horizontal air cylinder 4 and is an air inlet and outlet passage of the vertical air cylinder 3 and the horizontal air cylinder 4.

Further, in the present embodiment, the upper needle bed 5 includes a connecting plate 20 and an upper needle bed body 21, the upper needle bed body 21 is fixedly connected below the connecting plate 20, and the connecting plate 20 is connected with the vertical cylinder 3.

The top of the frame 1 is provided with an upper limit switch 22 for limiting the lifting travel of the vertical cylinder 3. A lower limit switch 23 for limiting the stroke of the vertical cylinder 3 pressed down in place is arranged on the frame 1 near the working table 2. The stroke of the vertical cylinder 3 may be set according to the actual requirement, for example, 30mm.

The working process and principle of the PCBA test tool based on the SKD are explained in detail below.

1. The test fixture is externally connected to equipment through a DB interface 19 and an air pipe interface 18, and the DB interface 19 can realize signal input and output, such as input of power supply voltage, high and low levels, output of audio signals, voltage, current, high and low levels and the like; the air pipe interface 18 controls the air inlet and outlet of the air cylinder.

2. The vertical cylinder 3 is connected with the upper needle bed 5, the horizontal cylinder 4 is connected with the racing steel joint 8, and the table top is provided with the lower needle bed 6.

3. Generating a drilling file according to Gerber file processing of the PCBA single board 7, ensuring drilling precision, and fixing a U.FL interface probe of a Bluetooth/WIFI antenna and an MCX interface probe of a GPS antenna by the upper needle bed 5 through drilling according to coordinate points of the Bluetooth/WIFI antenna socket and the GPS antenna socket 10; according to the coordinate points of the bonding pad pins of the USB/AUX socket 12 and the radio antenna socket 13, the lower needle bed 6 is provided with saw-tooth needle probes through drilling holes, so that the bonding pad pins of the USB/AUX socket 12 and the radio antenna socket 13 are accurately connected.

4. After the PCBA single board 7 is placed on the lower needle bed 6, the flat cable socket 11 is connected with the display screen panel through the hand-inserted flat cable

5. After the manual operation is finished, the vertical cylinder 3 is controlled to be pressed down by pressing two pressing keys 16 simultaneously, and the pressing of the vertical cylinder 3 is confirmed to be in place through a signal of a lower limit switch 23.

6. The vertical cylinder 3 is pressed down to enable the upper needle bed 5 to be connected with the lower needle bed 6, so that the upper needle bed 5 presses the PCBA single plate 7 and simultaneously automatically abuts against the Bluetooth/WIFI antenna socket and the GPS antenna socket 10, and the lower needle bed 6 supports the PCBA single plate 7 and simultaneously automatically abuts against pad pins of the USB/AUX socket 12 and the radio antenna socket 13.

7. After the vertical cylinder 3 presses down and fixes the PCBA single board 7, the horizontal cylinder 4 is automatically controlled by equipment to push, so that the automatic butt joint of the racing steel connector 8 and the ISO-36PIN socket 9 is realized.

8. The PCBA single board 7 is powered through the DB interface 19, signals are input and signals output by the PCBA single board 7 are detected, and if the signals need to be judged manually, judgment and PASS signal output can be performed by pressing a manual confirmation key.

9. After the PCBA single board 7 is tested, the device automatically controls the horizontal cylinder 4 to push out, the vertical cylinder 3 is lifted up to pull up the upper needle bed 5 by manually pressing the lifting key 17, and the cylinder control is turned off after the lifting is confirmed to be in place through the upper limit switch 22 signal.

10. Finally, the PCBA single board 7 is taken out after the manual disconnection of the flat cable socket 11 is connected, and the test is finished.

The PCBA testing tool based on the SKD has the beneficial effects that:

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the specification and drawings of the present utility model or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. PCBA test fixture based on SKD, its characterized in that includes: the machine comprises a frame, a working table surface, a vertical air cylinder, a horizontal air cylinder, an upper needle bed and a lower needle bed, wherein the working table surface is horizontally arranged on the frame, the vertical air cylinder is vertically arranged above the working table surface, the upper needle bed is connected with the vertical air cylinder, the lower needle bed is arranged on the working table surface and used for placing a PCBA single board to be tested, the horizontal air cylinder faces the PCBA single board, and a steel racing joint is arranged at the output end of the horizontal air cylinder.

2. The SKD-based PCBA testing tool of claim 1, wherein the upper needle bed comprises a connecting plate and an upper needle bed body, the upper needle bed body is fixedly connected below the connecting plate, and the connecting plate is connected with the vertical cylinder.

3. The SKD-based PCBA testing tool of claim 2, wherein an upper limit switch is provided on the top of the housing for limiting the vertical cylinder to a lift-in-place travel.

4. A PCBA testing fixture based on SKD according to claim 3, wherein a lower limit switch for limiting the vertical cylinder's stroke in place is provided on the frame adjacent the table top.

5. The SKD-based PCBA testing tool of claim 1, wherein an air pipe interface is provided on the back of the chassis, the air pipe interface being connected to the vertical and horizontal cylinders.

6. The SKD-based PCBA testing tool of claim 5, wherein a DB interface is provided on a back side of the chassis adjacent the tracheal interface.

7. The SKD-based PCBA testing tool of claim 1, wherein a manual confirmation key, a push-down key and a push-up key connected with the vertical cylinder are provided on the chassis.

8. The SKD-based PCBA testing tool of claim 7, wherein the number of press keys is two.

9. The SKD-based PCBA testing tool of claim 1, wherein a display panel is further provided on the chassis.

10. The SKD-based PCBA testing tool of claim 1, wherein the PCBA board is provided with an ISO-36PIN socket, a GPS antenna socket, a flat cable socket, a USB/AUX socket, and a radio antenna socket.