CN216696924U - Flexible printed circuit board abnormity detection equipment of liquid crystal display - Google Patents
Flexible printed circuit board abnormity detection equipment of liquid crystal display Download PDFInfo
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- CN216696924U CN216696924U CN202220241270.1U CN202220241270U CN216696924U CN 216696924 U CN216696924 U CN 216696924U CN 202220241270 U CN202220241270 U CN 202220241270U CN 216696924 U CN216696924 U CN 216696924U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 238000006073 displacement reaction Methods 0.000 claims abstract description 49
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an abnormity detection device for a flexible printed circuit board of a liquid crystal display, which comprises an installation platform, a blanking port, an installation suspension, a duplex cylinder, a displacement sensor, a measurement platform, a detection platform, a barrier strip, a sliding table cylinder and an electrical box. The utility model converts the abnormal detection of the flexible printed circuit board into the thickness detection of the flexible printed circuit board, namely, the displacement sensor is used for measuring the thickness of the flexible printed circuit board of the current liquid crystal display, and whether the current liquid crystal display is an abnormal product is judged by measuring the thickness of the flexible printed circuit board. The device has simple integral structure, low cost and simple and convenient operation and can be used in the production line.
Description
Technical Field
The utility model relates to the technical field of liquid crystal displays, in particular to a flexible printed circuit board abnormity detection device of a liquid crystal display.
Background
In the production of liquid crystal displays, a flexible printed circuit board (FPC) needs to be mounted on liquid crystal glass. In the actual production process, two flexible printed circuit boards are mounted on the same liquid crystal glass together due to the adhesion of the flexible printed circuit boards or abnormal production process, or the reinforcing films at the golden fingers of the FPC fall off or the thickness exceeds the standard, so that the produced liquid crystal display is an abnormal product. However, since the frequency of occurrence of such abnormal products is low, quality testers are apt to neglect due to long-term single labor, and therefore, the conditions of wrong and missed detection inevitably occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the existing quality testing personnel often neglect to detect the abnormity of the flexible printed circuit board of the liquid crystal display product, and provides the abnormity detection equipment of the flexible printed circuit board of the liquid crystal display.
In order to solve the problems, the utility model is realized by the following technical scheme:
the utility model provides a LCD's flexible printed circuit board anomaly detection equipment, includes mounting platform, blanking mouth, installation suspension, duplex cylinder, displacement sensor, measuring platform, testing platform, blend stop, slip table cylinder and electrical apparatus box. The mounting platform is suspended right above the assembly line, and a blanking port which is communicated up and down is formed in the mounting platform. The mounting suspension is arranged on the mounting platform in a spanning mode and is located at the edge of the blanking port; the fixed part of the duplex cylinder is vertically arranged on the mounting suspension, and the displacement sensor is vertically arranged on the movable part of the duplex cylinder; the measuring platform is positioned right below the displacement sensor; the duplex cylinder drives the displacement sensor to move along the vertical direction, and a probe of the displacement sensor is attached to the surface of the flexible printed circuit board of the liquid crystal display to be measured during measurement. The detection platform is movably covered right above the blanking port; two ends of the barrier strip are fixed at the edge of the blanking port, and the barrier strip is arranged right above the detection platform in a spanning manner; the fixed part of the sliding table cylinder is arranged on the mounting platform, and the movable part of the sliding table cylinder is connected with the detection platform; during measurement, the detection platform completely covers the blanking port, liquid crystal glass of the liquid crystal display to be detected is horizontally placed at the edge of the detection platform, and a flexible printed circuit board of the liquid crystal display to be detected extends out of the detection platform to the measurement platform; after the measurement is completed, the sliding table air cylinder drives the detection platform to move towards the blocking strip along the horizontal direction, the blanking port is gradually exposed, and when the horizontal distance between the edge of the detection platform and the edge of the blocking strip is smaller than the width of the liquid crystal glass of the liquid crystal display to be detected, the liquid crystal display to be detected falls onto the production line from the blanking port. The electrical box is arranged on the mounting platform; the output end of the displacement sensor is electrically connected with the electrical box; the control ends of the duplex cylinder and the sliding table cylinder are electrically connected with the electrical box.
In the above scheme, a limit block is vertically arranged at the edge of the blanking port of the mounting platform and is positioned under the duplex cylinder.
In the above scheme, the displacement sensor is an inductive displacement sensor.
In the scheme, the electric appliance box is provided with the nixie tube display screen and the buzzer.
Compared with the prior art, the utility model has the following characteristics:
1. the abnormity detection of the flexible printed circuit board is converted into the thickness detection of the flexible printed circuit board, namely, the displacement sensor is used for measuring the thickness of the flexible printed circuit board of the current liquid crystal display, whether the current liquid crystal display is an abnormal product is judged by measuring the thickness of the flexible printed circuit board, and whether the flexible printed circuit board of the current liquid crystal display is qualified is not required to be judged manually, so the skill requirement of production personnel is reduced, and the production efficiency is improved;
2. the duplex cylinder is used at the position of the product for measuring the thickness, the limit is used at the bottom, and the detection is carried out by matching with the inductive displacement sensor, so that the accuracy and the repeatability of the detection can be effectively ensured;
3. the sliding table cylinder and the barrier strip are used for limiting at the product sliding position, the integral rigidity and precision of the sliding table cylinder are high, the static and dynamic stability of a bottom plate at the product placing position can be effectively guaranteed, the detection precision is good, and the barrier strip limitation can ensure that a detected product automatically slides to a production line;
4. the electrical box automatically screens out abnormal products without manual judgment, and can prompt workers through a display screen or a buzzer immediately after the abnormal products are screened out, so that the condition of error and omission caused by fatigue of personnel is effectively avoided;
5. the whole structure of the equipment is simple, the cost is low, the operation is simple and convenient, and the equipment can be used in an assembly line.
Drawings
Fig. 1 is a schematic perspective view of an abnormality detection apparatus for a flexible printed circuit board of a liquid crystal display.
The following are marked in the figure: 1. mounting a platform; 2. a blanking port; 3. mounting a suspension; 4. a limiting block; 5. a duplex cylinder; 6. a displacement sensor; 7. a measuring platform, 8 and a detection platform; 9. blocking strips; 10. a sliding table cylinder; 11. an electrical appliance box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to specific examples.
Referring to fig. 1, the flexible printed circuit board abnormality detection device for the liquid crystal display includes a mounting platform 1, a blanking port 2, a mounting suspension 3, a limiting block 4, a duplex cylinder 5, a displacement sensor 6, a measuring platform 7, a detection platform 8, a barrier strip 9, a sliding table cylinder 10 and an electrical box 11. In the preferred embodiment of the present invention, the displacement sensor 6 is an inductive displacement sensor 6, and the inductive displacement sensor 6 is a non-contact electrical principle sensor, and is internally divided into an inductive magnetic block and a single chip signal circuit. The effect programming chip in the circuit generates a magnetic induction effect through the back-and-forth expansion of the magnet, so that the circuit outputs different voltage or current signals.
The mounting platform 1 is suspended over the assembly line, and the mounting platform 1 is provided with a blanking port 2 which is communicated up and down. The mounting suspension 3 is arranged on the mounting platform 1 in a straddling mode and is located at the edge of the blanking port 2. The fixed part of the duplex cylinder 5 is vertically mounted on the mounting suspension 3, and the displacement sensor 6 is vertically mounted on the movable part of the duplex cylinder 5. The measuring platform 7 is located directly below the displacement sensor 6. The edge of the blanking port 2 of the mounting platform 1 is vertically provided with a limiting block 4, and the limiting block 4 is positioned under the duplex cylinder 5 so as to ensure the stroke consistency of the duplex cylinder 5 and further ensure the repeat precision of the measuring system. The duplex cylinder 5 drives the displacement sensor 6 to move along the vertical direction, and a probe of the displacement sensor 6 is attached to the surface of the flexible printed circuit board of the liquid crystal display to be measured during measurement. The signal output value of the displacement sensor 6 is in a proportional linear relation with the actual moving distance. The detection platform 8 is movably covered right above the blanking port 2. Two ends of the barrier strip 9 are fixed at the edge of the blanking port 2, and the barrier strip 9 is arranged over the detection platform 8 in a spanning manner. A slight gap is kept between the barrier strip 9 and the detection platform 8 so as not to interfere with the movement of the detection platform 8. The fixed part of slip table cylinder 10 is installed on mounting platform 1, and the movable part of slip table cylinder 10 is connected with testing platform 8. During measurement, the detection platform 8 completely covers the blanking port 2, the liquid crystal glass of the liquid crystal display to be detected is horizontally placed at the edge of the detection platform 8, and the flexible printed circuit board of the liquid crystal display to be detected extends out of the detection platform 8 to the measurement platform 7. After the measurement is completed, the sliding table cylinder 10 drives the detection platform 8 to move towards the barrier strip 9 along the horizontal direction, the blanking port 2 is gradually exposed, and when the horizontal distance between the edge of the detection platform 8 and the edge of the barrier strip 9 is smaller than the width of the liquid crystal glass of the liquid crystal display to be detected, the liquid crystal display to be detected falls onto the production line from the blanking port 2. The electrical box 11 is mounted on the mounting platform 1. The output end of the displacement sensor 6 is connected with the electric appliance box 11 through a cable and used for feeding back a displacement signal. The control ends of the duplex cylinder 5 and the sliding table cylinder 10, namely the magnetic switch, are in cable connection with the electrical box 11 and are used for feeding back motion state signals of the cylinders. The electrical box 11 is provided with a nixie tube display screen and a buzzer.
The working process of the flexible printed circuit board abnormity detection equipment of the liquid crystal display is as follows:
in the initial state of the device, the detection platform 8 completely covers the blanking port 2, and the displacement sensor 6 is located at the highest point in the vertical direction. On the workman will wait to examine LCD level and place testing platform 8, the LCD glass that waits to examine this moment is close to 8 upper surface edges of testing platform, and the LCD's that waits to examine flexible printed circuit board stretches out to measuring platform 7 from testing platform 8 to towards displacement sensor 6 directions, and the regional center of golden finger of flexible printed circuit board just is in under the displacement sensor 6.
A worker opens the equipment switch, the electric appliance box 11 sends a control signal to the duplex cylinder 5, and after the duplex cylinder 5 receives the control signal, the duplex cylinder 5 drives the displacement sensor 6 on the duplex cylinder to vertically move downwards to the position of the limiting block 4. At this time, since the flexible printed circuit board of the lcd to be tested is located right below the probe of the displacement sensor 6, the probe of the displacement sensor 6 retracts to generate a displacement, and the retracted displacement of the probe of the displacement sensor 6 corresponds to the thickness of the flexible printed circuit board of the lcd to be tested. The displacement sensor 6 transmits the retracted displacement back to the electrical box 11, and the electrical box 11 displays the retracted displacement on a nixie tube display screen of the electrical box 11 as the thickness of a golden finger area of a flexible printed circuit board of the liquid crystal display to be detected. Meanwhile, the electrical box 11 determines whether the retracted displacement is within the allowable tolerance range of the single flexible printed circuit board:
if the retracted displacement is within the allowable tolerance range, the thickness of the golden finger area of the flexible printed circuit board of the liquid crystal display to be tested is normal, and the liquid crystal display to be tested is a normal product. At this moment, electrical apparatus box 11 sends control signal to slip table cylinder 10, and slip table cylinder 10 receives control signal after, drives testing platform 8 and removes to blend stop 9 directions promptly to the direction of keeping away from displacement sensor 6 along the horizontal direction, and blanking mouth 2 exposes gradually, and when the horizontal distance between testing platform 8's edge and blend stop 9 edge was less than the width of waiting to detect LCD's liquid crystal glazing, waiting to detect LCD will drop to the assembly line from blanking mouth 2 on, along with assembly line transport to next station.
If the retraction displacement is smaller than the lower limit of the allowable tolerance range, the thickness of the golden finger area of the flexible printed circuit board of the liquid crystal display to be detected is too thin, namely, the golden finger reinforcing film is likely to fall off or the material is not qualified, and the liquid crystal display to be detected is an abnormal product. At this time, the electric box 11 issues an abnormal product warning of an excessively thin thickness by the buzzer. If the retraction displacement is larger than the upper limit of the allowable tolerance range, the thickness of the golden finger area of the flexible printed circuit board of the liquid crystal display to be tested is too thick, namely more than two flexible printed circuit boards are mounted on the liquid crystal display to be tested, or the material per se is unqualified, and the liquid crystal display to be tested is an abnormal product. At this time, the electric appliance box 11 issues an abnormal product warning of an excessively thick thickness by the buzzer.
After hearing the abnormal article warning sent by the buzzer, a worker takes down the liquid crystal display to be detected on the detection platform 8 and puts the liquid crystal display into the abnormal article collection frame, and after the alarm of the electric appliance box 11 is released, the equipment can detect the next liquid crystal display.
It should be noted that, although the above-mentioned embodiments of the present invention are illustrative, the present invention is not limited thereto, and thus the present invention is not limited to the above-mentioned embodiments. Other embodiments, which can be made by those skilled in the art in light of the teachings of the present invention, are considered to be within the scope of the present invention without departing from its principles.
Claims (4)
1. The abnormity detection device for the flexible printed circuit board of the liquid crystal display is characterized by comprising an installation platform (1), a blanking port (2), an installation suspension (3), a duplex cylinder (5), a displacement sensor (6), a measurement platform (7), a detection platform (8), a barrier strip (9), a sliding table cylinder (10) and an electrical box (11);
the mounting platform (1) is suspended right above the production line, and a vertically-through blanking port (2) is formed in the mounting platform (1);
the mounting suspension (3) is arranged on the mounting platform (1) in a spanning mode and is located at the edge of the blanking port (2); the fixed part of the duplex cylinder (5) is vertically arranged on the mounting suspension (3), and the displacement sensor (6) is vertically arranged on the movable part of the duplex cylinder (5); the measuring platform (7) is positioned right below the displacement sensor (6); the duplex cylinder (5) drives the displacement sensor (6) to move along the vertical direction, and a probe of the displacement sensor (6) is attached to the surface of a flexible printed circuit board of the liquid crystal display to be measured during measurement;
the detection platform (8) is movably covered right above the blanking port (2); two ends of the barrier strip (9) are fixed at the edge of the blanking port (2), and the barrier strip (9) is arranged right above the detection platform (8) in a crossing manner; the fixed part of the sliding table cylinder (10) is arranged on the mounting platform (1), and the movable part of the sliding table cylinder (10) is connected with the detection platform (8); during measurement, the detection platform (8) completely covers the blanking port (2), liquid crystal glass of the liquid crystal display to be measured is horizontally placed at the edge of the detection platform (8), and a flexible printed circuit board of the liquid crystal display to be measured extends out of the detection platform (8) to the measurement platform (7); after the measurement is finished, the sliding table air cylinder (10) drives the detection platform (8) to move towards the barrier strip (9) along the horizontal direction, the blanking port (2) is gradually exposed, and when the horizontal distance between the edge of the detection platform (8) and the edge of the barrier strip (9) is smaller than the width of liquid crystal glass of the liquid crystal display to be measured, the liquid crystal display to be measured falls onto a production line from the blanking port (2);
the electrical box (11) is arranged on the mounting platform (1); the output end of the displacement sensor (6) is electrically connected with the electrical box (11); the control ends of the duplex cylinder (5) and the sliding table cylinder (10) are electrically connected with the electrical box (11).
2. The flexible printed circuit board abnormality detection device of a liquid crystal display according to claim 1, wherein a stopper (4) is erected at an edge of the blanking port (2) of the mounting platform (1), and the stopper (4) is located right below the duplex cylinder (5).
3. The flexible printed circuit board abnormality detecting apparatus of a liquid crystal display device according to claim 1, wherein the displacement sensor (6) is an inductive displacement sensor (6).
4. The flexible printed circuit board abnormality detection device of a liquid crystal display according to claim 1, wherein the electric appliance case (11) is provided with a nixie tube display screen and a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220241270.1U CN216696924U (en) | 2022-01-29 | 2022-01-29 | Flexible printed circuit board abnormity detection equipment of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220241270.1U CN216696924U (en) | 2022-01-29 | 2022-01-29 | Flexible printed circuit board abnormity detection equipment of liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216696924U true CN216696924U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220241270.1U Withdrawn - After Issue CN216696924U (en) | 2022-01-29 | 2022-01-29 | Flexible printed circuit board abnormity detection equipment of liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216696924U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326184A (en) * | 2022-01-29 | 2022-04-12 | 广西天山电子股份有限公司 | Flexible printed circuit board abnormity detection equipment of liquid crystal display |
| CN114326184B (en) * | 2022-01-29 | 2024-06-28 | 广西天山电子股份有限公司 | Flexible printed circuit board abnormality detection equipment of liquid crystal display |
-
2022
- 2022-01-29 CN CN202220241270.1U patent/CN216696924U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326184A (en) * | 2022-01-29 | 2022-04-12 | 广西天山电子股份有限公司 | Flexible printed circuit board abnormity detection equipment of liquid crystal display |
| CN114326184B (en) * | 2022-01-29 | 2024-06-28 | 广西天山电子股份有限公司 | Flexible printed circuit board abnormality detection equipment of liquid crystal display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220607 Effective date of abandoning: 20240628 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20220607 Effective date of abandoning: 20240628 |