PCB (Printed Circuit Board) test fixture

Abstract

The utility model discloses a PCB test fixture, and belongs to the technical field of PCB test. The jig comprises a rack; the lower detection die is arranged on the rack; the upper detection die is matched with the lower die and is used for clamping and fixing a PCB (Printed Circuit Board); wherein the lower detection die comprises a lower bottom die fixed with the rack; the lower supporting columns are arranged on the lower bottom die; the lower needle dial is arranged at the top end of the lower supporting column; and the wire coil is fixed through the lower support column and is positioned between the lower needle dial and the lower bottom die. According to the PCB test fixture, the PCB can be placed through the detection lower die, the detection upper die can be pressed on the placed PCB, the detection lower die can test components on the PCB, and the detection upper die can test a bonding pad on the PCB, so that the PCB is comprehensively tested, the test steps of the PCB are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board testing, in particular to a PCB board testing fixture. Background Art

[0002] Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Circuit boards can be called printed circuit boards or printed circuit boards, and their English names are (Printed Circuit Board) PCB, (Flexible Printed Circuit board) FPC circuit boards (FPC circuit boards are also called flexible circuit boards. Flexible circuit boards are made of polyimide or polyester film as substrates. They are highly reliable and extremely flexible printed circuit boards. They have the characteristics of high wiring density, light weight, thin thickness, and good bending properties.) and the birth and development of reechas (Soft and hard combination plate)-FPC and PCB have given rise to a new product, the reechas. Therefore, the reechas is a flexible circuit board and a hard circuit board, which are combined together according to relevant process requirements after lamination and other processes to form a circuit board with FPC characteristics and PCB characteristics.

[0003] After the PCB board is produced and processed, it needs to be tested. Only the PCB boards that have completed the testing steps can be sold normally. The existing PCB board test fixtures can usually only detect the electrical components on the PCB board, but cannot detect the pads on the PCB board. Subsequent testing steps need to be added, which reduces production efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a PCB board testing fixture.

[0005] The technical solution of the utility model is: a PCB board testing fixture, comprising: a frame; a detection lower mold arranged on the frame; a detection upper mold cooperating with the lower mold for clamping and fixing the PCB board; wherein the detection lower mold comprises: a lower bottom mold fixed to the frame; a plurality of lower pillars arranged on the lower bottom mold; a lower needle disk arranged on the top of the lower pillar; and a wire disk fixed by the lower pillar and located between the lower needle disk and the lower bottom mold; the detection upper mold comprises: an upper bottom mold capable of reciprocating in the vertical direction; a plurality of upper pillars arranged on the upper bottom mold; a protective plate arranged at the bottom end of the upper pillar; and an upper needle disk fixed by the upper pillar and located between the protective plate and the upper bottom mold.

[0006] Furthermore, a lower test probe is vertically penetrated on the lower needle disk, and a wire connected to the wire disk is provided at the tail end of the lower test probe.

[0007] Furthermore, a limit disk is provided between the thread disk and the lower needle disk, and two groups of the limit disks are provided, and the limit disks are fixed by lower pillars.

[0008] Furthermore, the tail end of the lower test probe is fixedly connected to a spring, and the other end of the spring is fixedly connected to a limiting plate, and the lower test probe is slidably connected to the limiting plate.

[0009] Furthermore, a placement groove for positioning the PCB board is provided on the lower needle plate.

[0010] Furthermore, the upper needle disk is provided with an upper test probe penetrating the protection plate.

[0011] Furthermore, the frame includes a bottom plate fixed to the lower bottom mold; a bracket vertically arranged on the bottom plate; and a connecting frame arranged on the bracket.

[0012] Furthermore, a driving mechanism for the controller to perform reciprocating motion is provided on the detection upper mold; the driving mechanism includes: a handle rotatably connected to the frame and located above the detection upper mold; a hinged rod rotatably connected to the handle, and the other end of the hinged rod is rotatably connected to the detection upper mold.

[0013] Furthermore, a sliding rod is vertically provided on the frame; and a sliding block slidably connected to the sliding rod is provided on the detection upper mold.

[0014] The beneficial technical effect of the utility model is that the PCB board can be placed by detecting the lower mold, the upper mold can be pressed on the placed PCB board, the lower mold can be used to test the components on the PCB board, and the upper mold can be used to test the pads on the PCB board, so that the PCB board can be fully tested, thereby reducing the test steps of the PCB board and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model in a front view;

[0016] Figure 2 It is a schematic top view of the structure of the lower needle disc of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the protection plate of the utility model from a bottom view;

[0018] Figure 4 This utility model Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0019] The numbers and letters in the figure represent the corresponding component names:

[0020] 1. Bottom plate; 11. Bracket; 12. Connecting frame; 2. Lower bottom mold; 21. Lower support; 22. Wire drum; 23. Lower needle disk; 24. Lower test probe; 25. Limit disk; 26. Spring; 27. Wire; 28. Placement slot; 3. Upper bottom mold; 31. Upper support; 32. Upper needle disk; 33. Protection plate; 34. Upper test probe; 4. Handle; 41. Articulated rod; 42. Sliding rod; 43. Sliding block. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0022] See attached Figure 1-4 As shown, the PCB board test fixture of the first embodiment includes: a frame; a detection lower mold arranged on the frame; and a detection upper mold cooperating with the lower mold for clamping and fixing the PCB board.

[0023] The inspection lower mold can place the PCB board, the inspection upper mold can be pressed on the placed PCB board, the inspection lower mold can test the components on the PCB board, and the inspection upper mold can test the pads on the PCB board, so as to conduct a comprehensive test on the PCB board, thereby reducing the test steps of the PCB board and improving production efficiency.

[0024] Among them, the detection lower mold includes: a lower bottom mold 2 fixed to the frame; a plurality of lower pillars 21 arranged on the lower bottom mold 2; a lower needle disk 23 arranged at the top of the lower pillars 21; and a wire disk 22 fixed by the lower pillars 21 and located between the lower needle disk 23 and the lower bottom mold 2.

[0025] The lower base mold 2 is used to be fixed on the frame, and the lower support column 21 is used to support the lower needle disk 23. The PCB board can be placed on the lower needle disk 23, and then the wire disk 22 can detect the components on the PCB board.

[0026] The detection upper mold includes: an upper bottom mold 3 capable of reciprocating in the vertical direction; a plurality of upper pillars 31 arranged on the upper bottom mold 3; a protection plate 33 arranged at the bottom end of the upper pillar 31; and an upper needle disk 32 fixed by the upper pillar 31 and located between the protection plate 33 and the upper bottom mold 3.

[0027] The protection plate 33 can protect the PCB board when it is pressed down to prevent the PCB board from shaking; the upper needle plate 32 can test the pads of the PCB board.

[0028] Furthermore, a lower test probe 24 is vertically penetrated through the lower needle disk 23 , and a wire 27 connected to the wire disk 22 is provided at the tail end of the lower test probe 24 .

[0029] The lower test probe 24 is used to test the components on the PCB board, and then the data is transmitted through the wire reel 22 and finally displayed, so as to facilitate the test personnel to watch and detect.

[0030] Furthermore, a limiting disk 25 is provided between the thread disk 22 and the lower needle disk 23 , and two groups of the limiting disks 25 are provided, and the limiting disks 25 are fixed by the lower support column 21 .

[0031] The limit plate 25 is used to limit the lower test probe 24 so that the lower test probe 24 will not have a large deviation during the reciprocating motion.

[0032] Furthermore, a spring 26 is fixedly connected to the tail end of the lower test probe 24 , and the other end of the spring 26 is fixedly connected to a limiting plate 25 , and the lower test probe 24 is slidably connected to the limiting plate 25 .

[0033] When the PCB board is placed on the lower needle plate 23 and the test upper mold presses down the PCB board, the force on the PCB board will squeeze the lower test probe 24, and the lower test probe 24 will be buffered and moved by the spring 26. Therefore, the spring 26 can not only protect the CB board, but also increase the connection tightness between the lower test probe 24 and the PCB board.

[0034] Furthermore, the lower needle plate 23 is provided with a placement groove 28 for positioning the PCB board.

[0035] The placement groove 28 can facilitate the positioning of the PCB board, and when the PCB board is pressed down, the PCB board will not have a large displacement.

[0036] Furthermore, an upper test probe 34 penetrating the protection plate 33 is disposed on the upper needle disk 32 .

[0037] The upper test probe 34 can contact the pads on the PCB, so as to test the pads on the PCB.

[0038] Furthermore, the frame includes a bottom plate 1 fixed to the lower bottom mold 2 ; a bracket 11 vertically arranged on the bottom plate 1 ; and a connecting frame 12 arranged on the bracket 11 .

[0039] The bracket 11 is used to increase the height, and the connecting frame 12 can be connected to drive and detect the movement of the upper mold.

[0040] Furthermore, a driving mechanism for the controller to perform reciprocating motion is provided on the detection upper mold; the driving mechanism includes: a handle 4 rotatably connected to the frame and located above the detection upper mold; a hinged rod 41 rotatably connected to the handle 4, and the other end of the hinged rod 41 is rotatably connected to the detection upper mold.

[0041] When the handle 4 rotates, the hinged rod 41 can be used to drive the detection upper mold to move, thereby driving the detection upper mold to press down the PCB board. The operation is simple and convenient, and its driving mechanism can also be replaced with other drives, such as a screw, a cylinder, etc.

[0042] Furthermore, a sliding rod 42 is vertically provided on the frame; and a sliding block 43 slidably connected to the sliding rod 42 is provided on the detection upper die.

[0043] The slide bar 42 and the slide block 43 can limit the detection upper die, thereby increasing stability when the detection upper die moves and preventing deviation when it is pressed downward.

[0044] The electrical equipment and components not described in detail in this article all adopt existing technologies, and their control methods and circuits are not described in detail in this article.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A PCB board test fixture, characterized in that: include: frame; A detection lower die disposed on the frame; An upper detection die cooperating with the lower die for clamping and fixing the PCB board; The detection lower mold comprises: a lower bottom mold (2) fixed to the frame; a plurality of lower pillars (21) arranged on the lower bottom mold (2); a lower needle disk (23) arranged on the top of the lower pillar (21); and a wire disk (22) fixed by the lower pillar (21) and located between the lower needle disk (23) and the lower bottom mold (2); The detection upper mold comprises: an upper bottom mold (3) capable of reciprocating in the vertical direction; a plurality of upper pillars (31) arranged on the upper bottom mold (3); a protection plate (33) arranged at the bottom end of the upper pillar (31); and an upper needle plate (32) fixed by the upper pillar (31) and located between the protection plate (33) and the upper bottom mold (3).

2. The PCB board test fixture according to claim 1, characterized in that: A lower test probe (24) is vertically penetrated on the lower needle disk (23), and a wire (27) connected to the wire disk (22) is provided at the tail end of the lower test probe (24).

3. The PCB board test fixture according to claim 2, characterized in that: A limiting disk (25) is provided between the thread disk (22) and the lower needle disk (23), and two groups of the limiting disks (25) are provided, and both limiting disks (25) are fixed by a lower support (21).

4. The PCB board test fixture according to claim 3, characterized in that: The tail end of the lower test probe (24) is fixedly connected to a spring (26), and the other end of the spring (26) is fixedly connected to a limiting plate (25), and the lower test probe (24) is slidably connected to the limiting plate (25).

5. The PCB board test fixture according to claim 1, characterized in that: The lower needle plate (23) is provided with a placement groove (28) for positioning the PCB board.

6. The PCB board test fixture according to claim 1, characterized in that: An upper test probe (34) penetrating the protection plate (33) is provided on the upper needle disk (32).

7. The PCB board test fixture according to claim 1, characterized in that: The frame comprises a bottom plate (1) fixed to the lower bottom mold (2); a bracket (11) vertically arranged on the bottom plate (1); and a connecting frame (12) arranged on the bracket (11).

8. The PCB board test fixture according to claim 1, characterized in that: The detection upper die is provided with a driving mechanism for the controller to perform reciprocating motion; the driving mechanism comprises: a handle (4) rotatably connected to the frame and located above the detection upper die; and a hinged rod (41) rotatably connected to the handle (4), the other end of the hinged rod (41) being rotatably connected to the detection upper die.

9. The PCB board test fixture according to claim 8, characterized in that: A sliding rod (42) is vertically arranged on the frame; and a sliding block (43) slidably connected to the sliding rod (42) is arranged on the detection upper die.

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