On-line detection device for ink impedance of cover plate

Abstract

The utility model discloses an on-line detection device for ink impedance of a cover plate, which comprises a detection host and a detection head, the detection head comprises a positive electrode detection pen core and a negative electrode detection pen core, the detection host is connected with the positive electrode detection pen core through a first lead, and the negative electrode detection pen core is connected with the negative electrode detection pen core through a second lead. And the detection host is connected with the negative electrode detection pen core through a second lead. The detection host and the detection head are arranged on the XY displacement platform. And when the detected impedance is smaller than a set standard value, the alarm lamp is red, so that production personnel can find, intercept and analyze the impedance. The online detection device for the printing ink impedance of the cover plate automatically completes identification of a cover plate sample and detection of the printing ink impedance, manual intervention is not needed in the whole process, automatic interception is achieved, the detection efficiency is high, online detection is easily achieved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a cover plate ink detection tool, more specifically, to an online detection device for cover plate ink impedance. Background Art

[0002] Generally speaking, the cover plate factory detects the ink impedance by spot checking a small number of cover plates and testing the impedance with a multimeter. This method has the risk of the hard pen tip damaging the ink. Secondly, the inspection ratio is small. Since it is a manual test, the test spacing is not standardized. Ink impedance is a very important control parameter. If the impedance is abnormal and less than the required value, the cover plate ink is conductive, which will cause the anti-static function to fail after the customer assembles the whole machine, or even abnormal electrical signals, etc. Once the cover plate is shipped from the cover plate factory, any other assembly actions in the middle will not have the operation of detecting the ink impedance, which makes it almost impossible to detect the problem during the entire assembly process. When the problem occurs, the cover plate has been assembled into a whole machine, so the loss is extremely serious.

[0003] Chinese invention patent document CN109102767B discloses an impedance detection circuit, including a first switch element, a second switch element, a detection unit and a processing unit. The first switch element includes a first control end, a first path end and a second path end, the first control end of the first switch element receives a first control signal, the first path end of the first switch element is grounded through a first detection resistor, and the second path end of the first switch element is connected to a detection power supply. The second switch element includes a second control end, a third path end and a fourth path end, the second control end of the second switch element receives a second control signal, the third path end of the second switch element is grounded through a second detection resistor, and the fourth path end of the second switch element is connected to the second path end of the first switch element. The processing unit includes a first output end, a second output end and a detection input end, the first output end outputs the first control signal, the second output end outputs the second control signal, and the detection input end is connected to the detection power supply through the detection unit. Among them, the first control signal is an enable signal, the second control signal is a PWM signal, and the processing unit collects the output signal of the detection power supply through the detection unit to determine the resistance value of the first detection resistor and the second detection resistor. The processing unit adjusts the duty cycle coefficient of the PWM signal. The detection power supply is a DC current source, and the detection unit collects the voltage of the output signal of the detection power supply. The detection unit includes a voltage amplifier. The detection power supply is a DC voltage source, and the detection unit collects the current of the output signal of the detection power supply. The first detection resistor and the second detection resistor are connected to the detection power supply through the detection unit. The first switch element and the second switch element are both NMOS tubes. An embodiment of the present invention also provides a display panel, including a printed circuit board and a flexible circuit board connected to the printed circuit board, characterized in that the liquid crystal display device includes the impedance detection circuit as described above, and the two binding impedances formed at the two binding locations of the flexible circuit board and the printed circuit board are defined as the first detection resistor and the second detection resistor. A connector is provided on the printed circuit board, the first control end of the first switch element is connected to the processing unit through the connector, the second control end of the second switch element is connected to the processing unit through the connector, and the second passage end of the first switch element is connected to the detection power supply through the connector. The impedance detection circuit communicates with an external device through an external interface.

[0004] Obviously, the patent expands the sampling range by changing the duty cycle coefficient of the PWM signal, thereby improving the sampling accuracy. This technology cannot solve the existing problem of detecting the cover ink impedance. Utility Model Content

[0005] Based on this, it is necessary to provide an online detection device for cover plate ink impedance in view of the above technical problems. The online detection device for cover plate ink impedance includes a detection host and a detection head. The detection head includes a positive detection refill and a negative detection refill. The detection host is connected to the positive detection refill through a first wire, and the detection host is connected to the negative detection refill through a second wire. The detection host and the detection head are both arranged on an XY displacement platform. When the cover plate sample of the printing ink runs along the conveyor belt to the bottom of the positioning detector, after the positioning detector senses the glass sample, the detection head moves downward until the positive conductive foam and the negative conductive foam of the detection head touch the ink surface of the cover plate sample at the same time. When the detected impedance is less than the set standard value, the alarm light displays red so that the production personnel can find and intercept and analyze it. The online detection device for cover plate ink impedance automatically completes the identification of the cover plate sample and the detection of ink impedance. The whole process does not require manual intervention, realizes automatic interception, has high detection efficiency, easily realizes online detection, and has strong practicality.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An online detection device for cover plate ink impedance comprises a detection host and a detection head, the detection head comprises a positive detection refill and a negative detection refill, the detection host is connected to the positive detection refill via a first wire, and the detection host is connected to the negative detection refill via a second wire.

[0008] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, the detection host and the detection head are both arranged on an XY displacement platform.

[0009] As a preferred embodiment of the online detection device for cover plate ink impedance provided by the utility model, the ends of the positive electrode detection pen cores are wrapped with positive electrode conductive foam, and the ends of the negative electrode detection pen cores are wrapped with negative electrode conductive foam.

[0010] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, a positioning detector is provided on the detection host.

[0011] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, the positioning detector is an ultrasonic detector.

[0012] As a preferred embodiment of the on-line detection device for cover plate ink impedance provided by the utility model, an alarm light is provided on the detection host.

[0013] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, an alarm speaker is provided on the detection host.

[0014] As a preferred embodiment of the on-line detection device for cover plate ink impedance provided by the utility model, the positive electrode detection pen core and the negative electrode detection pen core are integrated in the same housing.

[0015] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, the shell is made of acrylic plate.

[0016] As a preferred implementation of the on-line detection device for cover plate ink impedance provided by the utility model, the detection host is arranged in a protective box.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides an online detection device for the ink impedance of a cover plate. When a cover plate sample printed with ink runs along a conveyor belt to the bottom of a positioning detector, after the positioning detector senses a glass sample, the detection head moves downward until the positive conductive foam and the negative conductive foam of the detection head touch the ink surface of the cover plate sample at the same time. When the detected impedance is less than the set standard value, the alarm light turns red so that production personnel can find and intercept and analyze it. The online detection device for the ink impedance of a cover plate automatically completes the identification of the cover plate sample and the detection of the ink impedance. The entire process does not require manual intervention, and automatic interception is achieved. The detection efficiency is high, and online detection is easily achieved, which is highly practical.

[0019] In addition, the positioning detector can be an ultrasonic detector. Since the positioning detector is an ultrasonic detector, there is no requirement for the transparency of the cover plate sample, the detection effect is good, it is not easy to make a false detection, and the reliability is good.

[0020] In addition, the detection host can be provided with an alarm horn. When the impedance detected by the detection host is greater than the set standard value, the alarm horn can sound an alarm so that production personnel can find and intercept and analyze it. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the connection structure of the online detection device of the cover plate ink impedance of the utility model;

[0023] The markings in the figure are as follows: 1. The online detection device includes a detection host; 10. A protective box; 2. A detection head; 20. A housing; 21. A positive electrode detection refill; 22. A negative electrode detection refill; 31. A first wire; 32. A second wire; 41. A positive electrode conductive foam; 42. A negative electrode conductive foam; 5. A positioning detector; 6. An alarm light; 7. An alarm horn; S. An XY displacement platform. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] As described in the background technology, in the prior art, for the cover plate of the display screen, the cover plate factory detects the ink impedance by spot checking a small proportion of a few cover plates and testing the impedance with a multimeter. This method has the risk of the hard pen tip poking the ink, and secondly, the inspection ratio is small. Since it is a manual test, the test spacing is not standardized. Ink impedance is a very important control parameter. If the impedance is abnormal and less than the required value, that is, the cover plate ink is conductive, this will cause the customer to assemble the whole machine. The anti-static function fails, or even the electrical signal is abnormal, etc. Once the cover plate is shipped from the cover plate factory, any other assembly action in the middle will not have the operation of detecting the ink impedance, which makes it almost difficult to be discovered during the entire assembly process. When the problem occurs, the cover plate has been assembled into a complete machine, so the loss is extremely serious.

[0026] In order to solve this technical problem, the utility model provides an online detection device for cover plate ink impedance, comprising a detection host 1 and a detection head 2, wherein the detection head 2 comprises a positive detection refill 21 and a negative detection refill 22, wherein the detection host 1 is connected to the positive detection refill 21 via a first wire 31, and the detection host 1 is connected to the negative detection refill 22 via a second wire 32. The detection host 1 and the detection head 2 are both arranged on an XY displacement platform S.

[0027] Through the above structural design, the online detection device of the cover plate ink impedance automatically completes the identification of the cover plate sample and the detection of the ink impedance. The whole process does not require human intervention, and automatic interception is achieved. The detection efficiency is high, and online detection can be easily realized, which is highly practical.

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] Example 1

[0032] like Figure 1 As shown, the online detection device of the cover plate ink impedance includes a detection host 1 and a detection head 2, the detection head 2 includes a positive detection refill 21 and a negative detection refill 22, the detection host 1 is connected to the positive detection refill 21 through a first wire 31, and the detection host 1 is connected to the negative detection refill 22 through a second wire 32.

[0033] It should be noted that the detection host 1 and the detection head 2 are both arranged on an XY displacement platform S.

[0034] In addition, the ends of the positive electrode detection pen core 21 are wrapped with positive electrode conductive foam 41 , and the ends of the negative electrode detection pen core 22 are wrapped with negative electrode conductive foam 42 .

[0035] In addition, the detection host 1 is provided with a positioning detector 5. The positive electrode detection pen core 21 and the negative electrode detection pen core 22 are integrated in the same housing 20.

[0036] The housing 20 is made of an acrylic plate.

[0037] In addition, the detection host 1 is arranged in a protective box 10 .

[0038] In addition, the detection host 1 is provided with an alarm light 6 .

[0039] The working mode of this embodiment is described below.

[0040] When the cover plate sample A printed with ink runs along the conveyor belt M to the bottom of the positioning detector 5, after the positioning detector 5 senses the glass sample A, the detection head 2 moves downward until the positive conductive foam 41 and the negative conductive foam 42 of the detection head 2 simultaneously touch the ink surface of the cover plate sample A. At the same time, using the XY displacement platform S, the detection head 2 moves horizontally forward along the horizontal guide rail following the cover plate sample A of the assembly line.

[0041] The contact time between the detection head 2 and the cover plate sample A is 1 second, and the detection host 1 calculates the impedance based on the collected signals. When the detected impedance is greater than the set standard value (the standard value is generally 1000 megohms), the alarm light 6 displays a normal green light, and when the detected impedance is less than the set standard value, the alarm light 6 displays a red light, so that the production staff can find and intercept and analyze it.

[0042] After the detection head 2 contacts the cover plate sample A for 1 second, the detection is completed and the detection head 2 is reset. The positioning detector 5 starts working and senses the next cover plate sample again, thus cyclically detecting.

[0043] The online detection device for cover plate ink impedance automatically completes the identification of cover plate samples and the detection of ink impedance. The whole process does not require human intervention, realizes automatic interception, has high detection efficiency, easily realizes online detection, and is highly practical.

[0044] Example 2

[0045] The online detection device for the cover plate ink impedance provided in Example 1 is further optimized. Specifically, the positioning detector 5 is an ultrasonic detector.

[0046] The working mode of this embodiment is described below.

[0047] Since the positioning detector 5 is an ultrasonic detector, there is no requirement for the transparency of the cover plate sample, the detection effect is good, it is not easy to make false detections, and the reliability is good.

[0048] Example 3

[0049] The online detection device for the cover plate ink impedance provided in Example 1 or 2 is further optimized. Specifically, an alarm speaker 7 is provided on the detection host 1.

[0050] The working mode of this embodiment is described below.

[0051] When the impedance detected by the detection host 1 is greater than the set standard value, the alarm speaker 7 can sound an alarm so that production personnel can discover and intercept and analyze it.

[0052] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. An online detection device for cover plate ink impedance, characterized in that: The on-line detection device for cover plate ink impedance comprises a detection host (1) and a detection head (2); the detection head (2) comprises a positive detection pen core (21) and a negative detection pen core (22); the detection host (1) is connected to the positive detection pen core (21) via a first wire (31); the detection host (1) is connected to the negative detection pen core (22) via a second wire (32); the detection host (1) and the detection head (2) are both arranged on an XY displacement platform (S); the ends of the positive detection pen core (21) are wrapped with positive conductive foam (41); the ends of the negative detection pen core (22) are wrapped with negative conductive foam (42); and a positioning detector (5) is provided on the detection host (1).

2. The on-line detection device for cover plate ink impedance according to claim 1, characterized in that: The positioning detector (5) is an ultrasonic detector.

3. The on-line detection device for cover plate ink impedance according to claim 1, characterized in that: The detection host (1) is provided with an alarm light (6).

4. The on-line detection device for cover plate ink impedance according to claim 1, characterized in that: The detection host (1) is provided with an alarm horn (7).

5. The on-line detection device for cover plate ink impedance according to claim 1, characterized in that: The positive electrode detection pen core (21) and the negative electrode detection pen core (22) are integrated in the same housing (20).

6. The on-line detection device for cover plate ink impedance according to claim 5, characterized in that: The shell (20) is made of an acrylic plate.

7. The on-line detection device for cover plate ink impedance according to claim 1, characterized in that: The detection host (1) is arranged in a protective box (10).

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