An electric measuring fixture matched with an automatic electric measuring machine

Abstract

The present invention discloses an electric test fixture matched with an automatic electric test machine, comprising an upper fixture, a lower fixture and a product carrier, wherein a lower fixture top plate is arranged at the upper end of the lower fixture, a plurality of electric test convex modules are arranged in the electric test probe area of ​​the lower fixture top plate, and the electric test probes are exposed above the electric test convex modules, and the plurality of electric test convex modules are arranged at corresponding positions of the product electric test area required for electric test of the FPC unit products in the single electric test area of ​​the FPC panel; a plurality of product electric test windows are arranged at corresponding positions of the product electric test area required for electric test of all FPC unit products in the FPC panel, a plurality of product positioning PINs matching the product positioning holes of the FPC panel are arranged on the product carrier, and a plurality of carrier positioning holes matching the automatic electric test machine are arranged on the left and right sides of the product carrier. The present invention has a simple structure, is easy to implement, and can improve the accuracy of product electric test and improve the production efficiency of electric test.

Description

Technical Field

[0001] The invention relates to the technical field of flexible circuit board manufacturing, and in particular to an electric testing jig matched with an automatic electric testing machine. Background Art

[0002] With the rapid development of intelligent manufacturing, most of the original manual production processes have been introduced into automated equipment operation. In the production process of flexible circuit boards (FPC), there is an important electrical testing process, which is used to detect the open and short circuit and other conductive properties of FPC. At present, the electrical testing process has been introduced into automatic electrical testing machines, such as Figures 1 to 5 As shown, the existing electrical testing fixture 1 used in conjunction with the automatic electrical testing machine includes an upper fixture 11, a lower fixture 12 and a product carrier board 13 used in conjunction with the upper end of the lower fixture 12, a lower fixture top plate 121 is provided on the upper end of the lower fixture 12, a plurality of electrical testing positioning PINs 1211 matching the electrical testing positioning holes 103 of the FPC panel 100 are provided on the lower fixture top plate 121, and an electrical testing area window 132 matching the electrical testing area of ​​the entire FPC panel 100 is provided in the middle area of ​​the product carrier board 13. When in use, the product carrier board 13 is positioned and sleeved in the specified position of the automatic electrical testing machine through the carrier board positioning hole 133, and the FPC panel 100 is positioned and sleeved on the product carrier board 13 through the product positioning hole 102. The automatic electrical testing machine clamps and drives the product carrier board 13 and the FPC panel 100 thereon through the product positioning hole 102 and the electrical testing PINs. The 1211 positioning sleeve is placed on the lower fixture top plate 121 of the electrical testing fixture 1, and steps along the X and Y axes in turn to cooperate with the electrical testing fixture 1 to realize automatic electrical testing. Because only the left and right process edges of the FPC panel 100 are placed on the product carrier 13, a large area in the middle of the FPC panel 100 is in a suspended state, and the FPC panel 100 is made of flexible material and has a certain amount of soft deformation. During the electrical testing process, the positioning PIN may not be accurately placed and damage the product positioning hole, causing the electrical testing probe to fail to accurately detect the electrical testing points on the product, resulting in electrical mismeasurement and false defects, resulting in low product yield, multiple machine alarm prompts, and low production efficiency.

[0003] In view of this, the designer of the present invention has made in-depth considerations on the many deficiencies and inconveniences caused by the imperfect structural design of the existing electrical testing fixtures and product carriers used in automatic electrical testing machines, and has actively researched, improved and trial-produced the present invention. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an electrical testing fixture that can be matched with an automatic electrical testing machine that can perform electrical testing accurately and with high efficiency.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] An electrical testing jig matched with an automatic electrical testing machine comprises an upper jig, a lower jig and a product carrier used in conjunction with the upper jig and the lower jig, wherein a lower jig top plate is arranged at the upper end of the lower jig, an electrical testing probe area is arranged on the lower jig top plate, a plurality of electrical testing convex modules are arranged in the electrical testing probe area, and the electrical testing probes penetrate and are exposed above the electrical testing convex modules, and the plurality of electrical testing convex modules are arranged at positions corresponding to the product electrical testing areas required for electrical testing of FPC unit products in a single electrical testing area of ​​an FPC panel; a plurality of product electrical testing windows are opened on the product carrier, and the plurality of product electrical testing windows are arranged at positions corresponding to the product electrical testing areas required for electrical testing of all FPC unit products in the FPC panel, and a plurality of product positioning PINs matching the product positioning holes of the FPC panel are arranged on the product carrier.

[0007] Furthermore, a plurality of carrier plate positioning holes matching the automatic electrical measuring machine are provided on the left and right sides of the product carrier plate.

[0008] Furthermore, the product carrier plate and the electrical measurement convex module have the same thickness.

[0009] Furthermore, the size of the electrical testing convex module is expanded by a first preset distance based on the size of the product electrical testing area.

[0010] The first preset distance is preferably 0.5-3 mm.

[0011] Furthermore, the size of the product electrical testing window is expanded by a second preset distance based on the size of the electrical testing convex module.

[0012] The second preset distance is preferably 0.05-0.15 mm.

[0013] The second preset distance is determined according to the product carrier board and the electrical measurement convex module as well as the electrical measurement allowable deviation, which can further ensure the accuracy of the product electrical measurement.

[0014] After adopting the above scheme, when the electrical testing jig matched with the automatic electrical testing machine of the present invention is used, the upper jig and the lower jig are fixedly installed in the designated area of ​​the automatic electrical testing machine, and the product carrier is positioned and installed in the designated area of ​​the automatic electrical testing machine through the carrier positioning hole. During production, the FPC panel is positioned on the product carrier through the product positioning hole and the product positioning PIN positioning sleeve. The automatic electrical testing machine drives the product carrier and the panel on it to be positioned on the top plate of the lower jig of the electrical testing jig through the product electrical testing window and the electrical testing convex module, and then steps along the X and Y axes in turn to cooperate with the electrical testing jig to realize automatic electrical testing.

[0015] Because the window is only opened at the position corresponding to the product electrical measurement area required for effective electrical measurement of the FPC unit product on the product carrier, the other areas of the product carrier can carry most of the product area, ensuring that the FPC panel will not bend or deform during the electrical measurement process to cause electrical measurement errors; the electrical measurement accuracy of the product can be ensured by matching the product electrical measurement window with the electrical measurement convex module and positioning it after the electrical measurement; the size of the product electrical measurement window is expanded by a second preset spacing based on the size of the electrical measurement convex module, and the second preset spacing is determined according to the product carrier, the electrical measurement convex module and the electrical measurement allowable deviation, which can further ensure the accuracy of the product electrical measurement; the thickness of the product carrier and the electrical measurement convex module are the same, so that the FP The C panels are at the same horizontal height during the electrical measurement process, which is beneficial to further control the electrical measurement error and will not cause electrical measurement damage to the product due to height difference; after adopting the electrical measurement fixture and product carrier of the present invention, it is not necessary to design electrical measurement positioning holes around the product electrical measurement area of ​​the FPC unit product in the FPC panel, thereby reducing a positioning hole punching process and shortening product production time; the original electrical measurement positioning PIN is cancelled on the lower fixture top plate of the electrical measurement fixture to avoid the electrical measurement positioning PIN damaging the product positioning hole and causing product electrical measurement mismeasurement; the electrical measurement fixture and product carrier of the present invention have simple structures and are easy to implement, which can improve the accuracy of product electrical measurement and improve electrical measurement production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the existing electrical testing fixture;

[0017] Figure 2 It is a plan view of the top plate of the lower fixture of the existing electrical testing fixture;

[0018] Figure 3 Plan view of the product carrier board used with the existing electrical test fixture;

[0019] Figure 4 It is a plan view of the existing FPC panel;

[0020] Figure 5 It is a schematic diagram of the use of the existing electrical testing fixture;

[0021] Figure 6 A three-dimensional diagram of the electric measuring fixture of the present invention;

[0022] Figure 7 A three-dimensional diagram of the top plate of the lower fixture of the present invention;

[0023] Figure 8 A three-dimensional diagram of a carrier board of the product of the present invention;

[0024] Fig. 9 A three-dimensional diagram of the top plate of the lower fixture, the electrical measurement convex module and the product carrier plate of the present invention in cooperation with each other;

[0025] Fig.10It is a plan view of the top plate of the lower fixture, the electrical measurement convex module and the product carrier plate used in combination with each other in the present invention;

[0026] Fig.11 for Fig.10 A magnified view of middle;

[0027] Fig.12 It is a plan view of the FPC panel of the present invention;

[0028] Fig.13 It is a schematic diagram of the use of the electrical testing fixture of the present invention. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0030] like Figures 6 to 13 As shown, the present invention is an electric testing fixture 2 matched with an automatic electric testing machine, including an upper fixture 21, a lower fixture 22 and a product carrier plate 23 used in conjunction therewith, a lower fixture top plate 221 is provided at the upper end of the lower fixture 22, a plurality of electric testing convex modules 222 are added to the original electric testing probe area on the lower fixture top plate 221, and the electric testing probes can penetrate and be exposed above the electric testing convex modules 222 (the electric testing probes are not shown in the figure), that is, the plurality of electric testing convex modules 222 are arranged at corresponding positions of the product electric testing area 203 required for electric testing of the FPC unit product 201 in the single electric testing area 20 of the FPC panel 200;

[0031] A plurality of product electrical testing windows 232 are provided on the product carrier 23. The plurality of product electrical testing windows 232 are arranged at positions corresponding to the product electrical testing areas 203 required for electrical testing of all FPC unit products 201 in the FPC panel 200. A plurality of product positioning PINs 231 matching the product positioning holes 202 of the FPC panel 200 are provided on the product carrier 23. A plurality of carrier positioning holes 233 matching the automatic electrical testing machine are provided on the left and right sides of the product carrier 23.

[0032] The product carrier board 23 and the electrical measuring module 222 have the same thickness.

[0033] The size of the electrical testing convex module 222 is expanded by a first preset distance H based on the size of the product electrical testing area 203 .

[0034] The first preset distance H is preferably 0.5-3 mm.

[0035] The size of the product electrical testing window 232 is expanded by a second preset distance L based on the size of the electrical testing protruding module 222 .

[0036] The second preset spacing L is determined according to the product carrier 23, the electrical measurement convex module 222 and the electrical measurement allowable deviation, and is preferably 0.05-0.15 mm.

[0037] like Fig.13 As shown, when in use, the upper fixture 21 and the lower fixture 22 are fixedly installed in the specified area of ​​the automatic electrical testing machine, and the product carrier 23 is positioned and installed in the specified area of ​​the automatic electrical testing machine through the carrier positioning hole 233. During production, the FPC panel 200 is positioned and sleeved on the product carrier 23 through the product positioning hole 202 and the product positioning PIN 231. The automatic electrical testing machine drives the product carrier 23 and the FPC panel 200 thereon to be matched and positioned and sleeved on the lower fixture top plate 221 of the electrical testing fixture 1 through the product electrical testing window 232 and the electrical testing convex module 222, and then steps along the X and Y axes in turn to cooperate with the electrical testing fixture 2 to realize automatic electrical testing.

[0038] Since a window is only provided on the product carrier 23 at a position corresponding to the product electrical measurement area 203 required for effective electrical measurement of the FPC unit product 201, other areas of the product carrier 23 can carry most areas of the product, ensuring that the FPC panel will not bend or deform during the electrical measurement process to cause electrical measurement errors; the electrical measurement accuracy of the product can be ensured by matching the product electrical measurement window 232 with the electrical measurement convex module 222 for positioning and sleeve placement; the size of the product electrical measurement window 232 is expanded by a preset spacing L based on the size of the electrical measurement convex module 222, and the preset spacing L is determined according to the product carrier 23, the electrical measurement convex module 222 and the electrical measurement allowable deviation, which can further ensure the accuracy of the product electrical measurement; the thickness of the product carrier 23 and the electrical measurement convex module 222 is the same, so that the FPC panel is at the same horizontal height during the electrical measurement process, which is conducive to further controlling the electrical measurement error and will not cause electrical measurement pressure damage to the product due to the height difference; after adopting the electrical measurement fixture and the product carrier of the present invention, such as Fig.12 As shown, there is no need to design electrical measurement positioning holes around the product electrical measurement area 203 of the FPC unit product 201 in the FPC panel 200, thereby reducing a positioning hole punching process and shortening product production time; the original electrical measurement positioning PIN is cancelled on the lower fixture top plate 221 of the electrical measurement fixture to avoid the electrical measurement PIN damaging the positioning hole of the product and causing product electrical measurement errors; the electrical measurement fixture and its product carrier board of the present invention have simple structures and are easy to implement, which can improve the accuracy of product electrical measurement and improve electrical measurement production efficiency.

[0039] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. An electric measuring jig matched with an automatic electric measuring machine, comprising an upper jig, a lower jig and a product carrier plate used in conjunction with the upper jig and the lower jig, a lower jig top plate being provided at the upper end of the lower jig, and an electric measuring probe area being provided on the lower jig top plate, characterized in that: A plurality of electrical measurement convex modules are arranged in the electrical measurement probe area, and the electrical measurement probes are exposed above the electrical measurement convex modules, and the plurality of electrical measurement convex modules are arranged at corresponding positions of the product electrical measurement area for electrical measurement of the FPC unit products in the single electrical measurement area of ​​the FPC panel; a plurality of product electrical measurement windows are opened on the product carrier, and the plurality of product electrical measurement windows are arranged at corresponding positions of the product electrical measurement area for electrical measurement of all FPC unit products in the FPC panel, and a plurality of product positioning PINs matching the product positioning holes of the FPC panel are arranged on the product carrier; the thickness of the product carrier is the same as that of the electrical measurement convex module, so that the FPC panel is at the same level during the electrical measurement process; The upper jig and the lower jig are fixedly installed in the designated area of ​​the automatic electrical testing machine. The product carrier is positioned and installed in the designated area of ​​the automatic electrical testing machine through the carrier positioning holes. During production, the FPC panel is positioned on the product carrier through the product positioning holes and the product positioning PIN positioning sleeve. The automatic electrical testing machine drives the product carrier and the panel on it to match the positioning sleeve through the product electrical testing window and the electrical testing convex module and is positioned on the top plate of the lower jig of the electrical testing jig, and then steps along the X and Y axes in turn to cooperate with the electrical testing jig to realize automatic electrical testing.

2. The electrical testing jig matched with the automatic electrical testing machine as claimed in claim 1, characterized in that: A plurality of carrier plate positioning holes matching the automatic electrical measuring machine are provided on the left and right sides of the product carrier plate.

3. The electric measuring jig matched with the automatic electric measuring machine as claimed in claim 1, characterized in that: The size of the electrical testing convex module is expanded by a first preset distance based on the size of the product electrical testing area.

4. The electric measuring jig matched with the automatic electric measuring machine as claimed in claim 3, characterized in that: The first preset spacing is 0.5-3 mm.

5. The electric measuring jig matched with the automatic electric measuring machine as claimed in claim 1, characterized in that: The size of the product electrical testing window is expanded by a second preset distance based on the size of the electrical testing convex module.

6. The electric measuring jig matched with the automatic electric measuring machine as claimed in claim 5, characterized in that: The second preset spacing is 0.05-0.15 mm.

Images