CN116429679A - Method and device for testing adhesion force of large-size panel - Google Patents

Method and device for testing adhesion force of large-size panel Download PDF

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Publication number
CN116429679A
CN116429679A CN202310338701.5A CN202310338701A CN116429679A CN 116429679 A CN116429679 A CN 116429679A CN 202310338701 A CN202310338701 A CN 202310338701A CN 116429679 A CN116429679 A CN 116429679A
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panel
arm
cross arm
size panel
adhesion force
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李轩
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Beijing Jingyi Automation Equipment Co Ltd
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Beijing Jingyi Automation Equipment Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E10/50—Photovoltaic [PV] energy

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Abstract

The invention provides a method and a device for testing adhesion force of a large-size panel, and belongs to the technical field of adhesion force testing. The method for testing the adhesion force of the large-size panel comprises the following steps: placing a large-size panel sample to be tested on a friction column pad; a cross arm is arranged above the large-size panel sample wafer; the free end of the cross arm is downwards provided with a longitudinal arm, and the lower end of the longitudinal arm is connected with the upper end face of the large-size panel sample wafer through a panel connecting device; slowly and vertically moving the friction column pad downwards until the large-size panel sample wafer is separated from the friction column pad, and obtaining the maximum deflection value of the connecting point of the cross arm and the longitudinal arm; and calculating according to the maximum deflection value to obtain a tension value in the vertical direction born by the connecting point of the cross arm and the longitudinal arm. The invention converts the adhesion force measurement into displacement measurement, thereby improving the measurement accuracy of the adhesion force; the method has the characteristics of high precision, low cost and good operation.

Description

Method and device for testing adhesion force of large-size panel
Technical Field
The invention relates to the technical field of adhesion test, in particular to a method and a device for testing adhesion of a large-size panel.
Background
The friction type transmission is a common panel transmission mode, and is transmitted through the friction force generated by the gravity of the panel, so that the panel transmission device has the advantages of simple structure and small panel deformation. The common transmission equipment is a friction transmission type manipulator, and a structure of the friction transmission type manipulator, which is in direct contact with the panel and provides friction force, is called a friction column pad; the movable manipulator is provided with a plurality of friction column pads, after the manipulator supports the panel, friction force is generated between the panel and the friction column pads through dead weight, the panel is enabled to move along with the manipulator to realize panel transmission, the panel is placed on the panel bracket by the manipulator after being transmitted to a designated position, the friction column pads are separated from the panel by downward movement of the manipulator, and panel placement is completed. Besides friction force, adhesion force exists between the friction column pad and the panel, and when the panel is placed at a specified position after transmission is completed, the adhesion force can obstruct the separation of the panel and the friction column pad, so that the panel in the placing process is deformed and vibrated. It is therefore necessary to measure and study the adhesion force to guide the design of the friction stud pad.
The adhesion force can be measured directly by a measuring device with a force sensor such as a load cell, but the measurement of the adhesion force between a large-sized panel and a friction column pad has the following difficulties: 1. the adhesive force is in the order of 10N, a small-range and high-precision force sensor is needed, and the test cost is greatly increased; 2. the large area sheet has a large planar dimension and a small thickness, and the friction column pad is generally 1-2 cm in size, both of which limit the installation of the force sensor.
Disclosure of Invention
The invention provides a method and a device for testing the adhesion force of a large-size panel, which are used for solving the problem that the adhesion force between the large-size panel and a friction column pad in the prior art is difficult to measure.
The invention provides a method for testing the adhesion force of a large-size panel, which comprises the following steps:
placing a large-size panel sample to be tested on a friction column pad;
a cross arm is arranged above the large-size panel sample piece, one end of the cross arm is a fixed end, and the other end of the cross arm is a free end; the free end of the cross arm is downwards provided with a longitudinal arm, and the lower end of the longitudinal arm is connected with the upper end face of the large-size panel sample wafer through a panel connecting device;
slowly and vertically moving the friction column pad downwards until the large-size panel sample wafer is separated from the friction column pad, and obtaining the maximum deflection value of the connecting point of the cross arm and the longitudinal arm;
according to the maximum deflection value, calculating to obtain a tension value in the vertical direction born by the connecting point of the cross arm and the longitudinal arm;
the tensile force value is the adhesion force between the large-size panel sample and the friction column pad.
The invention also provides a large-size panel adhesion force testing device, which comprises:
the bearing mechanism is provided with a friction column pad which is used for bearing a large-size panel sample to be tested;
the lifting mechanism is arranged below the bearing mechanism and used for driving the bearing mechanism to move along the vertical direction;
the cantilever mechanism comprises a cross arm, a longitudinal arm and a panel connecting device, one end of the cross arm is connected with a stand column, the stand column is positioned on one side of the lifting mechanism, the other end of the cross arm is a free end and is connected with the upper end of the longitudinal arm, the lower end of the longitudinal arm is connected with the panel connecting device, and the panel connecting device is used for being connected with the upper end face of the large-size panel sample wafer;
the displacement sensor is positioned above the free end of the cross arm and is used for detecting the maximum deflection value of the connecting point of the cross arm and the longitudinal arm in the vertical direction;
the data processing and control module is respectively and electrically connected with the lifting mechanism and the displacement sensor and is used for controlling the lifting mechanism and the displacement sensor to start and stop and receiving the maximum deflection value information detected by the displacement sensor so as to calculate the output adhesive force.
According to the large-size panel adhesion force testing device provided by the invention, the supporting mechanism is the friction column pad support, and the friction column pad support is provided with the friction column pad.
According to the large-size panel adhesion force testing device provided by the invention, the lifting mechanism is a telescopic motor or a lifting cylinder, and the output end of the telescopic motor or the lifting cylinder is connected with the bottom end of the friction column pad support.
According to the large-size panel adhesion force testing device provided by the invention, the cross arm is of a beam-shaped structure with a rectangular cross section.
According to the large-size panel adhesion force testing device provided by the invention, the longitudinal arm is of a strip-shaped structure with a rectangular section, and two ends of the longitudinal arm are respectively connected with the cross arm and the panel connecting device in a rotating way through the rotating shaft.
According to the large-size panel adhesion force testing device provided by the invention, the longitudinal arm is a steel wire rope, and two ends of the steel wire rope are respectively connected with the cross arm and the panel connecting device.
According to the large-size panel adhesion force testing device provided by the invention, the panel connecting device is the connecting block with the triangular section, and the lower end face of the connecting block is in adhesive connection with the upper end face of the large-size panel sample.
According to the large-size panel adhesion force testing device provided by the invention, the geometric centers of the panel connecting device, the large-size panel sample wafer, the friction column pad and the bearing mechanism are collinear.
According to the large-size panel adhesion force testing device provided by the invention, the connection point of the longitudinal arm and the panel connecting device is positioned in the geometric center of the panel connecting device.
According to the method and the device for testing the adhesion force of the large-size panel, the adhesion force measurement is converted into displacement measurement, non-contact displacement measurement is carried out through the displacement sensor, the measurement can be finished through one displacement sensor, a high-precision force sensor is not needed, and the cost of testing equipment is reduced; the displacement to be measured is amplified through the cantilever mechanism, so that the measurement accuracy of the adhesive force is improved; the cantilever mechanism can be changed in size and material according to the adhesion to be tested, so that the cantilever mechanism meets the test requirements of different adhesion and has universality.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a large-size panel adhesion testing device provided by the invention;
FIG. 2 is a schematic diagram showing the states of the friction post pad and the large-size panel sample at the initial stage of testing;
fig. 3 is a schematic view showing a state where the friction stud pad is separated from the large-sized panel sample.
Reference numerals:
100. a bearing mechanism; 101. a friction post pad; 200. a lifting mechanism;
300. a cantilever mechanism; 301. a cross arm; 302. a trailing arm; 303. a panel connecting device;
304. a column; 400. a displacement sensor; 500. a data processing and control module;
600. large size panel dailies.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The method and apparatus for testing adhesion of large-sized panels according to the present invention are described below with reference to fig. 1 to 3.
A large-size panel adhesion test method comprises the following steps:
placing the large-size panel sample 600 to be tested on a friction column pad 101; the large-size panel sample 600 is prepared from a large-size panel, the size of the large-size panel sample is slightly larger than that of the friction column pad 101, and the large-size panel sample 600 can be circular in shape, so that the large-size panel sample is convenient to mount in a centering manner with the friction column pad 101 and the panel connecting device 303.
A cross arm 301 is arranged above the large-size panel sample wafer 600, one end of the cross arm 301 is a fixed end, and the other end of the cross arm 301 is a free end; the free end of the cross arm 301 is provided with a longitudinal arm 302 downwards, and the lower end of the longitudinal arm 302 is connected with the upper end surface of the large-size panel sample wafer 600 through a panel connecting device 303;
the cross arm 301 is a rectangular section beam with a certain length L (the length L is the distance between the fixed end of the cross arm 301 and the mounting point of the longitudinal arm 302), a width D and a thickness H;
the connection between the trailing arm 302 and the cross arm 301 does not constrain the rotational degrees of freedom, which may take forms including, but not limited to: (1) the cross arm 301 and the longitudinal arm 302 are rectangular section beams and are connected through a rotating shaft; (2) the longitudinal arm 302 is a flexible member such as a steel wire rope, the cross arm 301 is provided with a hole, and the longitudinal arm 302 penetrates into and is fixed on the cross arm 301;
the connection between the panel connection device 303 and the trailing arm 302 does not restrict the degree of freedom of rotation, and the connection form of the panel connection device and the trailing arm 302 refers to the trailing arm 302 and the cross arm 301; the panel connecting device 303 is connected with the large-size panel sample wafer 600 by adopting adhesive;
the geometric centers of the friction stud pad 101, the large-size panel coupon 600, and the panel connector 303 are collinear, and the connection point of the trailing arm 302 to the panel connector 303 is also located at the geometric center of the panel connector 303.
The friction column pad 101 is slowly moved downwards vertically until the large-size panel sample wafer 600 is separated from the friction column pad 101, and the maximum deflection value of the connecting point of the cross arm 301 and the longitudinal arm 302 is obtained;
in this embodiment, the friction column pad 101 moves vertically downward slowly and can be driven to run by the lifting mechanism 200;
the maximum deflection value is obtained by the following steps: a displacement sensor 400 is arranged above the free end of the cross arm 301, and the displacement sensor 400 is preferably a laser displacement sensor; the laser displacement sensor is used for collecting displacement information of the connecting point of the cross arm 301 and the longitudinal arm 302 in the vertical direction, namely detecting the deflection value of the connecting point; initially, the initial displacement of the connection point to the laser displacement sensor is denoted as S 0 The friction column pad 101 moves vertically downward slowly, straightIn the process of separating the large-size panel sample 600 from the friction column pad 101, the maximum displacement from the connection point to the laser displacement sensor is recorded as S max The method comprises the steps of carrying out a first treatment on the surface of the The maximum deflection value S of the connection point of the cross arm 301 and the trailing arm 302 is:
S＝S max -S 0
according to the maximum deflection value, calculating to obtain a tension value in the vertical direction born by the connecting point of the cross arm 301 and the longitudinal arm 302;
the maximum deflection value S of the connection point and the received tensile force value F also have the following relationship:
Figure BDA0004157376680000061
wherein E is the material elastic modulus of the cross arm 301, and I is the section moment of inertia of the cross arm 301;
the cross-sectional moment of inertia I of the cross arm 301 is related to the size of the cross arm 301 as follows:
Figure BDA0004157376680000062
the tension value F can be obtained by conversion of the three formulas:
Figure BDA0004157376680000063
the tensile force value is the adhesion force between the large-size panel sample wafer 600 and the friction column pad 101; under the uniform motion, the adhesion force of the friction column pad 101 and the tensile force of the panel connecting device 303 applied to the large-size panel sample wafer 600 are balanced, i.e. the tensile force applied to the cross arm 301 is equal to the panel adhesion force.
As can be seen from the above formula, the adhesion force is directly proportional to the elastic modulus E of the cross arm 301 and the cross-section height H of the cross arm 301, inversely proportional to the length L of the cross arm 301 (the length L is the distance between the fixed end of the cross arm 301 and the mounting point of the trailing arm 302), and by increasing L, decreasing E and decreasing H, the above test method can measure smaller adhesion force and has higher measurement accuracy. The material of the corresponding cross arm 301 and the cross section size of the cross arm 301 can be matched according to the adhesion force to be tested, so that the testing method can meet the testing requirements of different adhesion forces.
The embodiment also provides a large-size panel adhesion test device which is designed according to the large-size panel adhesion test method.
The large-size panel adhesion force testing device comprises: the support mechanism 100, the lifting mechanism 200, the cantilever mechanism 300, the displacement sensor 400 and the data processing and control module 500.
The supporting mechanism 100 is provided with a friction column pad 101, and the friction column pad 101 is used for bearing a large-size panel sample 600 to be tested; specifically, the supporting mechanism 100 is a friction column pad support, and a friction column pad 101 is disposed on the friction column pad support.
The lifting mechanism 200 is disposed below the supporting mechanism 100, and is used for driving the supporting mechanism 100 to move along a vertical direction; specifically, the lifting mechanism 200 is a telescopic motor or a lifting cylinder, and the output end of the telescopic motor or the lifting cylinder is connected with the bottom end of the friction column pad support.
The cantilever mechanism 300 comprises a cross arm 301, a longitudinal arm 302 and a panel connecting device 303, wherein one end of the cross arm 301 is connected with a stand column 304, the stand column 304 is positioned on one side of the lifting mechanism 200, the other end of the cross arm 301 is a free end and is connected with the upper end of the longitudinal arm 302, the lower end of the longitudinal arm 302 is connected with the panel connecting device 303, and the panel connecting device 303 is used for being connected with the upper end face of a large-size panel sample wafer 600;
specifically, the cross arm 301 is a beam-like structure with a rectangular cross section;
the trailing arm 302 can have two schemes, the first being: the longitudinal arm 302 is of a strip-shaped structure with a rectangular section, and two ends of the longitudinal arm 302 are respectively connected with the transverse arm 301 and the panel connecting device 303 in a rotating way through rotating shafts, so that the connecting angle between the longitudinal arm 302 and the transverse arm 301 can be changed; the second scheme is as follows: the longitudinal arm 302 is a steel wire rope, two ends of the steel wire rope are respectively connected with the cross arm 301 and the panel connecting device 303, and the longitudinal arm 302 is in a natural sagging state at the beginning;
the panel connecting device 303 is a connecting block with a triangular section, and the lower end surface of the connecting block is in adhesive connection with the upper end surface of the large-size panel sample wafer 600;
the geometric centers of the panel connecting device 303, the large-size panel sample 600, the friction column pad 101 and the bearing mechanism 100 are collinear; the connection point of the trailing arm 302 to the panel connection 303 is located at the geometric center of the panel connection 303; in the initial stage of testing, the trailing arm 302 is collinear with the geometric center described above; at this time, the large-size panel sample 600 is subjected to gravity, so that the trailing arm 302 is tensioned, and the cross arm 301 may have an initial deformation, and the initial deformation does not affect the test result and the precision.
The displacement sensor 400 is located above the free end of the cross arm 301, and the displacement sensor 400 is used for detecting a maximum deflection value of a connection point of the cross arm 301 and the trailing arm 302 in the vertical direction; the displacement sensor 400 is preferably a laser displacement sensor, and when the displacement sensor is installed, the laser measuring point is aligned with the position of the connecting point of the cross arm 301 and the longitudinal arm 302, and the outgoing laser is collinear with the geometric center.
The data processing and controlling module 500 is electrically connected with the lifting mechanism 200 and the displacement sensor 400 respectively, and is used for controlling the starting and stopping of the lifting mechanism 200 and the displacement sensor 400 and receiving the maximum deflection value information detected by the displacement sensor 400 so as to calculate the output adhesive force;
the data processing and controlling module 500 may be considered as a conventional control panel, and may perform data input, for example, input the length L of the cross arm 301 (the length L is the distance between the fixed end of the cross arm 301 and the mounting point of the trailing arm 302), the width D, the thickness H, the elastic modulus E of the material of the cross arm 301, the section moment of inertia I of the cross arm 301, and so on; the data processing and controlling module 500 may also perform data processing, for example, calculate the logic relationship by the formula from the maximum deflection value information detected by the displacement sensor 400, and output the magnitude of the tensile force value F, so as to obtain the magnitude of the adhesion force;
after inputting the corresponding data, the data processing and control module 500 is correspondingly operated according to the testing method, and then the testing work can be completed.
According to the method and the device for testing the adhesion force of the large-size panel, the adhesion force measurement is converted into displacement measurement, the non-contact displacement measurement is carried out through the displacement sensor 400, the measurement can be finished through one displacement sensor 400, a high-precision force sensor is not needed, and the cost of testing equipment is reduced; the displacement to be measured is amplified through the cantilever mechanism 300, so that the measurement accuracy of the adhesive force is improved; the size and the material of the cross arm 301 in the cantilever mechanism 300 can be changed according to the adhesion to be tested, so that the cross arm meets the test requirements of different adhesion and has universality.
The test object of the adhesion force test method and the device is not limited to a large-size panel, is also suitable for the adhesion force measurement between a large-size thin plate such as a wafer, a display screen and the like and a friction column pad, and has the characteristics of high precision, low cost and good operation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The method for testing the adhesion force of the large-size panel is characterized by comprising the following steps of:
placing a large-size panel sample to be tested on a friction column pad;
a cross arm is arranged above the large-size panel sample piece, one end of the cross arm is a fixed end, and the other end of the cross arm is a free end; the free end of the cross arm is downwards provided with a longitudinal arm, and the lower end of the longitudinal arm is connected with the upper end face of the large-size panel sample wafer through a panel connecting device;
slowly and vertically moving the friction column pad downwards until the large-size panel sample wafer is separated from the friction column pad, and obtaining the maximum deflection value of the connecting point of the cross arm and the longitudinal arm;
according to the maximum deflection value, calculating to obtain a tension value in the vertical direction born by the connecting point of the cross arm and the longitudinal arm;
the tensile force value is the adhesion force between the large-size panel sample and the friction column pad.
2. A large-size panel adhesion force testing device, characterized by comprising:
the bearing mechanism is provided with a friction column pad which is used for bearing a large-size panel sample to be tested;
the lifting mechanism is arranged below the bearing mechanism and used for driving the bearing mechanism to move along the vertical direction;
the cantilever mechanism comprises a cross arm, a longitudinal arm and a panel connecting device, one end of the cross arm is connected with a stand column, the stand column is positioned on one side of the lifting mechanism, the other end of the cross arm is a free end and is connected with the upper end of the longitudinal arm, the lower end of the longitudinal arm is connected with the panel connecting device, and the panel connecting device is used for being connected with the upper end face of the large-size panel sample wafer;
the displacement sensor is positioned above the free end of the cross arm and is used for detecting the maximum deflection value of the connecting point of the cross arm and the longitudinal arm in the vertical direction;
the data processing and control module is respectively and electrically connected with the lifting mechanism and the displacement sensor and is used for controlling the lifting mechanism and the displacement sensor to start and stop and receiving the maximum deflection value information detected by the displacement sensor so as to calculate the output adhesive force.
3. The device for testing adhesion of large-sized panels according to claim 2, wherein the supporting mechanism is a friction column pad holder, and one of the friction column pads is provided on the friction column pad holder.
4. The large-sized panel adhesion force testing device according to claim 3, wherein the lifting mechanism is a telescopic motor or a lifting cylinder, and an output end of the telescopic motor or the lifting cylinder is connected with a bottom end of the friction column pad support.
5. The large-sized panel adhesion testing device according to claim 2, wherein the cross arm is a beam-like structure having a rectangular cross section.
6. The device for testing the adhesion force of the large-size panel according to claim 5, wherein the longitudinal arm is of a strip-shaped structure with a rectangular cross section, and two ends of the longitudinal arm are respectively connected with the cross arm and the panel connecting device in a rotating manner through rotating shafts.
7. The large-size panel adhesion force testing device according to claim 5, wherein the trailing arm is a wire rope, and both ends of the wire rope are respectively connected with the cross arm and the panel connecting device.
8. The large-size panel adhesion force testing device according to claim 6 or 7, wherein the panel connecting device is a connecting block with a triangular cross section, and the lower end face of the connecting block is adhesively connected with the upper end face of the large-size panel sample.
9. The large panel adhesion testing device of claim 8, wherein geometric centers of the panel connection device, the large panel coupon, the friction stud pad, and the support mechanism are collinear.
10. The large panel adhesion testing device of claim 8, wherein the connection point of the trailing arm to the panel connection device is located at a geometric center of the panel connection device.
CN202310338701.5A 2023-03-31 2023-03-31 Method and device for testing adhesion force of large-size panel Pending CN116429679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310338701.5A CN116429679A (en) 2023-03-31 2023-03-31 Method and device for testing adhesion force of large-size panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310338701.5A CN116429679A (en) 2023-03-31 2023-03-31 Method and device for testing adhesion force of large-size panel

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Publication Number Publication Date
CN116429679A true CN116429679A (en) 2023-07-14

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