Jig for vertically testing bonding strength of intelligent display panel

Abstract

The utility model discloses a jig for vertically testing the bonding strength of an intelligent display panel, which is characterized in that the upper end of a cylindrical upper pull rod seat of an upper pull piece is fixedly connected into an upper jaw of a universal testing machine through a pin structure, and the upper end of an upper pull rod is fixedly connected to the lower end of the upper pull rod seat; the lower end of the upper pull rod is limited and connected to the upper surface of the to-be-tested sample through the upper notch and the fixed rubber block; a threaded screw rod is arranged at the lower end of a cylindrical lower pull rod seat of the lower pull piece and fixedly connected into a lower jaw of the universal testing machine, the lower end of a lower pull rod is fixedly connected to the upper end of the lower pull rod seat, and the upper end of the lower pull rod is connected to the lower surface of the sample to be tested through a lower notch and a fixed rubber block in a limiting manner; the middle parts of the upper pull rod and the lower pull rod are respectively matched with a screwing nut through external threads to form an adjusting mechanism; the device can be matched with various types of universal testing machines to test the bonding strength of the intelligent display panel, has a fine adjustment function, is convenient to operate, saves the cost investment, improves the production efficiency, and is high in precision, stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production equipment manufacturing technical field of intelligent display, specifically relates to a fixture for testing the bonding strength of intelligent display panel vertically. BACKGROUND

[0002] The panel of LCD (liquid crystal display), OLED (organic light emitting diode) and other intelligent displays is usually composed of glass bonding various functional structure layers, and the bonding strength of glass and each layer is one of the key process parameters of the panel of LCD, OLED and other intelligent displays, and is an important quality control step in the panel production process, and with the development of OLED technology, especially the application of flexible OLED, the Peeling test becomes more critical, because the flexible panel needs to bear greater physical stress, including bending and folding. In addition, the manufacturing process of the OLED panel involves multi-layer thin film deposition and packaging, and the bonding quality of each layer will directly affect the performance and life of the panel.

[0003] Therefore, the panel of the intelligent display needs to be tested and verified for bonding strength to ensure that the product quality meets the standard requirements; the bonding strength is generally inspected and detected by Peeling test (usually referred to as peeling test or bonding strength test), and this test mainly evaluates the bonding strength between each layer inside the panel, ensures that there is no air gap or foreign matter affecting the bonding between the layers, and thus guarantees the reliability and durability of the panel product of the intelligent display; the Peeling test usually uses a special fixture to pull one layer from another layer, measures the required force, so as to quantify the bonding strength. These data help manufacturers optimize production processes, select appropriate materials, and ensure that the quality of the final product meets the standards.

[0004] The peeling test or bonding strength test method of the prior art in the LCD and OLED panel industry usually directly uses a steel column structure bonded on both sides of the product to fix the peeling, and the centering is not good, and there are defects such as insufficient precision, unstable bonding of the steel column, poor reliability of the test data, and the need to test multiple groups of data for repeated verification, which wastes a large number of samples, is complicated to operate, has high cost consumption, and low production efficiency. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems existing in the prior art, the utility model aims at providing a fixture for testing the bonding strength of the panel of the intelligent display vertically, which can match various models of universal testing machines to test the bonding strength of the panel of the intelligent display, is convenient to operate, saves cost investment, improves production efficiency, has high precision, and is stable and reliable.

[0006] The technical scheme adopted by the utility model is:

[0007] A kind of for vertical test intelligent display panel bonding strength Jig, including upper pull piece and lower pull piece, the upper pull piece is used to be fixedly connected in the upper jaw of universal testing machine, the lower pull piece is used to be fixedly connected in the lower jaw of universal testing machine;

[0008] The lower end of the upper pull piece is provided with an upper notch, and the upper notch is used to be fixedly connected to the upper surface of the sample to be tested by a fixed block;

[0009] The upper end of the lower pull piece is provided with a lower notch, and the lower notch is used to be fixedly connected to the lower surface of the sample to be tested by a fixed block;

[0010] The upper pull piece and the lower pull piece are respectively provided with an adjusting mechanism.

[0011] Further, the lower end of the lower pull piece is provided with a threaded screw rod, and the lower end of the lower pull piece is connected to the internally threaded lower jaw of the universal testing machine through threaded cooperation.

[0012] Further, the upper pull piece includes a cylindrical upper pull rod seat and an upper pull rod, the upper pull piece is fixedly connected to the upper jaw of the universal testing machine through the upper end of the upper pull rod seat, and the upper pull piece is fixedly connected to the upper surface of the sample to be tested through the lower end of the upper pull rod;

[0013] The upper end of the upper pull rod is fixedly connected to the lower end of the upper pull rod seat.

[0014] Further, the lower pull piece includes a cylindrical lower pull rod seat and a lower pull rod, the lower pull piece is fixedly connected to the lower jaw of the universal testing machine through the lower end of the lower pull rod seat, and the lower pull piece is fixedly connected to the lower surface of the sample to be tested through the upper end of the lower pull rod;

[0015] The lower end of the lower pull rod is fixedly connected to the upper end of the lower pull rod seat.

[0016] The lower end of the lower pull rod seat is provided with a threaded screw rod.

[0017] Further, the upper end of the upper pull rod seat is provided with a first pin hole, and the upper end of the upper pull rod seat is fixedly connected to the upper jaw of the universal testing machine through a first cylindrical pin;

[0018] The lower section of the upper pull rod seat is provided with an internal counterbore, the outer wall of the internal counterbore of the upper pull rod seat is provided with a second pin hole, the upper end of the upper pull rod is provided with a third pin hole, and the lower section of the upper pull rod can extend into the internal counterbore of the upper pull rod seat and be fixedly positioned by a second cylindrical pin.

[0019] Further, the upper section of the lower pull rod seat is also provided with an internal counterbore, the outer wall of the internal counterbore of the lower pull rod seat is provided with a fourth pin hole, the lower end of the lower pull rod is provided with a fifth pin hole, and the lower section of the lower pull rod can extend into the internal counterbore of the lower pull rod seat and be fixedly positioned by a third cylindrical pin.

[0020] Further, all pin holes and pins are gap fit;

[0021] The middle part of the upper pull rod and the lower pull rod is respectively provided with a screwed nut through external thread cooperation, and an adjusting mechanism is formed.

[0022] Further, the lower end of the upper pull rod is provided with a rectangular upper notch, the center of the upper notch coincides with the axis of the upper pull rod, the wall part on both sides of the upper notch is provided with a sixth pin hole, and the upper notch is fixedly connected with the fixed glue block through the fourth pin.

[0023] The upper end of the lower pull rod is provided with a rectangular lower notch, the center of the lower notch coincides with the axis of the lower pull rod, the wall part on both sides of the lower notch is provided with a seventh pin hole, and the lower notch is fixedly connected with the fixed glue block through the fifth pin.

[0024] Further, the lower pull rod and the upper pull rod are the same in structure and opposite in direction, thereby forming a pair of mutually symmetrical cylindrical pull rod structures.

[0025] Finally, the middle part of the upper pull rod seat is also provided with a screwed nut through external thread cooperation.

[0026] The utility model discloses the beneficial effects are:

[0027] A tool for testing the bonding strength of intelligent display panel vertically, comprising an upper pull and a lower pull, the upper end of the cylindrical upper pull rod seat of the upper pull is fixedly connected to the upper jaw of the universal testing machine through the pin structure, the upper end of the upper pull rod is fixedly connected to the lower end of the upper pull rod seat, and the lower end of the upper pull rod is fixedly connected to the upper surface of the sample to be tested through the upper notch and the fixed glue block; the lower end of the cylindrical lower pull rod seat of the lower pull is fixedly connected to the lower jaw of the universal testing machine through the threaded screw rod, the lower end of the lower pull rod is fixedly connected to the upper end of the lower pull rod seat, and the upper end of the lower pull rod is fixedly connected to the lower surface of the sample to be tested through the lower notch and the fixed glue block; the middle part of the upper pull rod and the lower pull rod is respectively provided with a screwed nut through external thread cooperation, and an adjusting mechanism is formed. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the plane structure schematic view of the tool for testing the bonding strength of intelligent display panel vertically of the utility model;

[0029] Figure 2 It is the plane structure schematic view of the upper pull rod seat of the tool for testing the bonding strength of intelligent display panel vertically of the utility model;

[0030] Figure 3is Figure 2 a top view structural schematic diagram of the utility model;

[0031] Figure 4 is the upper pull rod plane structure schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically;

[0032] Figure 5 is Figure 4 a top view structural schematic diagram of the utility model;

[0033] Figure 6 is the rotating nut plane structure schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically;

[0034] Figure 7 is Figure 6 a top view structural schematic diagram of the utility model;

[0035] Figure 8 is the first cylindrical pin plane structure schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically;

[0036] Figure 9 is Figure 8 a bottom view structural schematic diagram of the utility model;

[0037] Figure 10 is the fourth bolt plane structure schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically;

[0038] Figure 11 is Figure 10 a right view structural schematic diagram of the utility model;

[0039] Figure 12 is Figure 10 a bottom view structural schematic diagram of the utility model;

[0040] Figure 13 is the lower pull rod seat plane structure schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically;

[0041] Figure 14 is Figure 13 a top view structural schematic diagram of the utility model;

[0042] Figure 15 is the three-dimensional structural schematic diagram of the utility model for testing the bonding strength of intelligent display panel vertically. DETAILED DESCRIPTION

[0043] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0044] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be intervening components. The "connection" described herein can be any one of mechanical connection, electrical connection and communication connection, or multiple connection modes coexist. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0046] As shown in Figures 1 to 15 A preferred embodiment of the present application provides a jig for testing the bonding strength of intelligent display panels vertically. The overall planning scheme is that the main structure is divided into two parts, an upper pulling piece 1 and a lower pulling piece 2, which are respectively fixed and connected to the upper and lower jaws of a universal testing machine. The upper and lower surfaces of the LCD (liquid crystal display), OLED (organic light emitting diode) and other intelligent display glass panels as test samples are fixed and connected to the upper and lower jaws of the universal testing machine, so that the universal testing machine can perform load stretching and peeling test, so as to verify the bonding strength of the test sample. The upper pulling piece 1 can be fixed and connected to the upper jaw of the universal testing machine, and the lower pulling piece 2 can be fixed and connected to the lower jaw of the universal testing machine.

[0047] The upper slot 11 is arranged at the lower end of the upper pulling piece 1, and the glue block can be clamped and fixed by limiting through the upper slot 11, so as to be fixedly connected to the upper surface of the sample to be tested; the lower slot 21 is arranged at the upper end of the lower pulling piece 2, and the glue block can be clamped and fixed by limiting through the lower slot 21, so as to be fixedly connected to the lower surface of the sample to be tested; and the adjusting mechanism is arranged on the upper pulling piece 1 and the lower pulling piece 2 respectively, and the millimeter-level fine adjustment function can be realized through the adjusting mechanism; the perpendicularity and centring property of the sample in the stretching process are ensured, and the jig precision deficiency problem is solved.

[0048] Specifically, the threaded screw rod 24 is arranged at the lower end of the lower pulling piece 2, and the lower end of the lower pulling piece 2 can be fixedly connected to the internally threaded lower jaw of the universal testing machine through threaded cooperation, which is convenient to operate and stable and reliable.

[0049] In the actual operation implementation process, the specific structural feature technical solutions of each component are as follows:

[0050] Firstly, the specific structural feature technical solutions of the upper pulling piece 1 are as follows:

[0051] The main structure of the upper pulling piece 1 is the coaxially arranged cylindrical upper pulling rod seat 12 and the upper pulling rod 13, the upper pulling piece 1 is fixedly connected to the upper jaw of the universal testing machine through the upper end of the upper pulling rod seat 12, the upper pulling piece 1 is fixedly connected to the upper surface of the sample to be tested through the lower end of the upper pulling rod 13, and the upper end of the upper pulling rod 13 is fixedly connected to the lower end of the upper pulling rod seat 12.

[0052] Specifically, the diameters of the upper segment, the middle segment and the lower segment of the upper pulling rod seat 12 increase in turn, the first pin hole 121 is arranged at the position close to the upper end of the upper pulling rod seat 12, and the upper end of the upper pulling rod seat 12 can be fixedly connected to the upper jaw of the universal testing machine through the first cylindrical pin 3, which is convenient to operate. The upper pulling rod 13 is also a cylindrical structure with the diameter increasing from top to bottom.

[0053] The inner counterbore 122 is arranged at the lower segment of the upper pulling rod seat 12, the second pin hole 123 is arranged through the outer wall of the inner counterbore of the upper pulling rod seat 12, and the third pin hole 131 is arranged through the upper end of the upper pulling rod 13, and the upper segment of the upper pulling rod 13 can extend into the inner counterbore 122 of the upper pulling rod seat 12 and be fixedly limited by the second cylindrical pin 4.

[0054] All the pin holes and pins are in clearance fit, which is convenient to operate; the tightening nut 8 is arranged at the middle part of the upper pulling rod 13 through external threaded cooperation, the upper pulling rod 13 and the upper pulling rod seat 12 can be rotationally locked through the tightening nut 8, which can meet the requirement of the fine adjustment function, constitutes the adjusting mechanism, and is stable and reliable; and the millimeter-level accurate adjustment can be realized through the tightening nut 8, the perpendicularity and centring property of the sample in the stretching process are ensured, and the jig precision deficiency problem is solved.

[0055] To further improve the reliability of the test performance, a threaded nut 8 can also be arranged on the middle part of the upper pull rod seat 12 through external thread cooperation to ensure the stable and reliable connection of the upper pull rod seat and the upper jaw of the universal testing machine.

[0056] A rectangular upper notch 11 is arranged at the lower end of the upper pull rod 13, the center of the upper notch 11 coincides with the axis of the upper pull rod 13, which ensures the verticality and centerness in the vertical loading stretching process, and solves the problem of insufficient jig precision; the sixth pin hole 135 is arranged through the wall part on both sides of the upper notch 11, and the upper notch 11 is fixed and connected by the fourth bolt 5, and the fixed glue block structure is not shown in the example of the drawing. The fixed glue block can directly use the suction cup positioning piece in the prior art, and can be directly purchased from the market, which is low in price and low in cost investment. The length, width and depth dimensions of the upper notch 11 are adapted to the suction cup positioning piece, and the fourth bolt 5 can penetrate the sixth pin hole 135 and the boss space on the suction cup positioning piece, so as to realize the fixed glue block in the upper notch 11.

[0057] Further, the specific structural feature technical scheme of the lower pull part 2 is as follows:

[0058] The main structure of the lower pull part 2 is also a coaxially arranged cylindrical lower pull rod seat 22 and a lower pull rod 23, the lower pull part 2 is fixedly connected to the lower jaw of the universal testing machine through the lower end of the lower pull rod seat 22, the lower pull part 2 is fixedly connected to the lower surface of the sample to be tested through the upper end of the lower pull rod 23, and the lower end of the lower pull rod 23 is fixedly connected to the upper end of the lower pull rod seat 22.

[0059] Specifically, the lower pull rod seat 22 is also a cylindrical structure, the lower section of the lower pull rod seat 22 is arranged as a threaded screw rod section 24, the lower pull part 2 is fixedly connected with the inner threaded lower jaw of the universal testing machine through the threaded screw rod section 24, which is convenient to operate and stable and reliable. The lower pull rod 23 is also a cylindrical structure with a upper section, a middle section and a lower section with diameters decreasing in turn.

[0060] Further, an inner counterbore 222 is arranged on the upper section of the lower pull rod seat 22, a fourth pin hole 223 is arranged through the outer wall of the inner counterbore of the lower pull rod seat 22, and a fifth pin hole 231 is arranged through the lower end of the lower pull rod 23. The lower section of the lower pull rod 23 can extend into the inner counterbore 222 of the lower pull rod seat 22 and be fixedly limited by the third cylindrical pin 6.

[0061] All pin holes and pins of the lower pull part are also clearance fit; and a threaded nut is arranged on the middle part of the lower pull rod 23 through external thread cooperation, which can be rotated to lock the lower pull rod 23 and the lower pull rod seat 22, can adapt to the fine adjustment function demand, constitutes an adjusting mechanism, and is stable and reliable; and the threaded nut can realize millimeter-level accurate adjustment, ensures the verticality and centerness of the sample in the stretching process, and solves the problem of insufficient jig precision.

[0062] A rectangular lower notch 21 is arranged at the lower end of the lower pull rod 23, the center of the lower notch 21 coincides with the axis of the lower pull rod 23, which ensures the verticality and centration in the vertical loading stretching process, and solves the problem of insufficient jig precision; the seventh pin hole 235 is arranged through the wall part on both sides of the lower notch 21, the lower notch 21 is fixed and connected by the fifth bolt 7, and the fixed glue block structure is not shown in the example of the drawing. The fixed glue block can directly use the suction cup positioning sheet in the prior art, and can be directly purchased from the market, which is low in price and low in cost investment. The length, width and depth size specifications of the lower notch 21 are also adapted to the suction cup positioning sheet, and the fifth bolt 7 can penetrate the seventh pin hole 235 and the boss space on the suction cup positioning sheet, so as to realize the fixed glue block limiting connection in the lower notch 21.

[0063] In actual operation, the lower pull rod and the upper pull rod in the example adopt the same structure, and the installation direction is opposite during installation and application, so as to form a pair of mutually symmetrical cylindrical pull rod structures, further simplifying the part production process and operation convenience.

[0064] The third cylindrical pin 6 and the second cylindrical pin 4 are completely the same as the structure of the first cylindrical pin 3; and a limiting boss can be arranged at one end of the third cylindrical pin 6, the second cylindrical pin 4 and the first cylindrical pin 3, which simultaneously constitutes a handle part. Correspondingly, a tapered tip is arranged at the other end of the third cylindrical pin 6, the second cylindrical pin 4 and the first cylindrical pin 3, which is convenient for cooperation and insertion into the pin hole, and does not need to be aligned and centered.

[0065] The structure of the fifth bolt 7 is also completely the same as that of the fourth bolt 5, and the fifth bolt 7 and the fourth bolt 5 are both rectangular cross-section bolts, and a limiting boss is arranged at one end of the fifth bolt 7 and the fourth bolt 5, which simultaneously constitutes a handle part. Correspondingly, a tapered tip is arranged at the other end of the fifth bolt 7 and the fourth bolt 5, which is convenient for cooperation and insertion into the pin hole, and does not need to be aligned and centered.

[0066] The utility model is used for the jig of perpendicular test intelligent display panel bonding strength, including upper pull piece and lower pull piece, the upper end of cylindrical upper pull rod seat of upper pull piece is fixedly connected to the upper jaw of universal testing machine through pin structure, the upper end of upper pull rod is fixedly connected to the lower end of upper pull rod seat, and the lower end of upper pull rod is fixedly connected to the upper surface of the sample to be tested through the upper slot and fixed rubber block limit, the lower end of cylindrical lower pull rod seat of lower pull piece is fixedly connected to the lower jaw of universal testing machine through screw rod, the lower end of lower pull rod is fixedly connected to the upper end of lower pull rod seat, and the upper end of lower pull rod is fixedly connected to the lower surface of the sample to be tested through the lower slot and fixed rubber block limit, the middle part of upper pull rod and lower pull rod is respectively fixedly connected to the upper surface of the sample to be tested through the outer thread cooperation setting screw nut, and constitutes the adjusting mechanism, can match the universal testing machine of various models and test intelligent display panel bonding strength, has the fine adjustment function, and the structure is simple and compact, convenient operation saves the cost investment, improves production efficiency, precision is high, stable and reliable.

[0067] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, any technical scheme falling into the scope defined by the utility model claims falls in the protection scope of the utility model.

Claims

1. A fixture for vertically testing the bonding strength of a smart display panel, characterized in that: It includes an upper pull member and a lower pull member, wherein the upper pull member is used to be fixedly connected to the upper jaw of the universal testing machine, and the lower pull member is used to be fixedly connected to the lower jaw of the universal testing machine; The lower end of the upper pull member is provided with an upper groove, which is used to be fixedly connected to the upper surface of the test sample by a fixing adhesive block; The upper end of the pull-down component is provided with a lower groove, which is used to be fixedly connected to the lower surface of the test sample by a fixing adhesive block; The upper pull member and the lower pull member are respectively provided with a tightening nut adjustment mechanism; The middle sections of the upper and lower pull rods are respectively fitted with tightening nuts via external threads, forming an adjustment mechanism; The upper and lower pull rod seats also have tightening nuts installed in the middle via external threads.

2. The fixture for vertically testing the bonding strength of a smart display panel according to claim 1, characterized in that: The lower end of the pull-down member is provided with a threaded screw, and the lower end of the pull-down member is connected to the internal threaded jaw of the universal testing machine through a threaded connection.

3. The fixture for vertically testing the bonding strength of a smart display panel according to claim 1, characterized in that: The upper pull member includes a cylindrical upper pull rod seat and an upper pull rod. The upper pull member is fixedly connected to the upper jaw of the universal testing machine through the upper end of the upper pull rod seat, and the upper pull member is fixedly connected to the upper surface of the sample to be tested through the lower end of the upper pull rod. The upper end of the upper pull rod is fixedly connected to the lower end of the upper pull rod seat.

4. The fixture for vertically testing the bonding strength of a smart display panel according to claim 3, characterized in that: The pull-down component includes a cylindrical pull-down rod seat and a pull-down rod. The pull-down component is fixedly connected to the lower jaw of the universal testing machine through the lower end of the pull-down rod seat, and the pull-down component is fixedly connected to the lower surface of the sample to be tested through the upper end of the pull-down rod. The lower end of the pull rod is fixedly connected to the upper end of the pull rod seat; The lower end of the pull rod seat is provided with a threaded screw.

5. The fixture for vertically testing the bonding strength of a smart display panel according to claim 4, characterized in that: The upper end of the upper pull rod seat is provided with a first pin hole, and the upper end of the upper pull rod seat is fixedly connected to the upper jaw of the universal testing machine by a first cylindrical pin. The lower section of the upper pull rod seat is provided with an inner countersunk hole, and the outer wall of the inner countersunk hole of the upper pull rod seat is provided with a second pin hole. The upper end of the upper pull rod is provided with a third pin hole, and the upper section of the upper pull rod can extend into the inner countersunk hole of the upper pull rod seat and be fixed by the second cylindrical pin.

6. The fixture for vertically testing the bonding strength of a smart display panel according to claim 5, characterized in that: The upper section of the pull rod seat is also provided with an inner countersunk hole, and the outer wall of the inner countersunk hole of the pull rod seat is provided with a fourth pin hole. The lower end of the pull rod is provided with a fifth pin hole. The lower section of the pull rod can extend into the inner countersunk hole of the pull rod seat and be fixed by a third cylindrical pin.

7. The fixture for vertically testing the bonding strength of a smart display panel according to claim 6, characterized in that: All pin holes and pins are clearance fits.

8. The fixture for vertically testing the bonding strength of a smart display panel according to claim 4, characterized in that: The lower end of the upper pull rod is provided with a rectangular upper groove, the center of which coincides with the axis of the upper pull rod; the walls on both sides of the upper groove are provided with a sixth pin hole, and the upper groove is connected to the fixed rubber block by a fourth pin. The upper end of the pull rod is provided with a rectangular lower groove, the center of which coincides with the axis of the pull rod; the walls on both sides of the lower groove are provided with a seventh pin hole, and the lower groove is connected to the fixed rubber block by a fifth pin.

9. The fixture for vertically testing the bonding strength of a smart display panel according to claim 4, characterized in that: The lower pull rod and the upper pull rod have the same structure but opposite directions, thus forming a pair of symmetrical cylindrical pull rod structures.

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