Glass plate edge tightness testing device and method

Abstract

The invention provides a glass plate edge tightness testing device and method, and relates to the technical field of glass plate manufacturing. The glass plate edge tightness testing device comprises a testing seat; a lifting driving mechanism, wherein a driving part of the lifting driving mechanism is mounted on the test seat; the stress detection mechanism is installed on the lifting part of the lifting driving mechanism, a sliding wheel is installed on the stress detection part of the stress detection mechanism, and the rotating axis of the sliding wheel is parallel to the rotating axial direction of the transmission roller; the lifting part is used for driving the sliding wheel to lift under the driving of the driving part and reaching a stress test state; in the stress test state, the sliding wheels jack up the edge area of the glass plate conveyed by the conveying mechanism by a preset height, and the stress detection mechanism measures a test stress value.

Description

Technical Field

[0001] This disclosure relates to the field of glass plate manufacturing technology, and in particular to a glass plate edge tightness testing device and method. Background Technology

[0002] During the production process, float glass sheets need to be annealed in an annealing furnace. The annealing furnace is used to cool the float glass sheets to room temperature by appropriately controlling the temperature, so that the thermal stress generated in the float glass sheets is controlled within the allowable range.

[0003] During the annealing process, float glass sheets generate tensile and compressive stresses. When the glass is in a plastic state, the higher temperature glass body experiences tensile stress, while the lower temperature exhibits compressive stress. When the glass is in an elastic state, the situation is exactly the opposite. Since tensile and compressive stresses are not directly observable, excessive tensile stress at the edges can easily cause longitudinal cracking, while excessive compressive stress at the edges can easily cause transverse cracking.

[0004] Currently, the method for judging the tightness of the glass sheet edges mainly relies on experienced workers manually lifting the glass sheet and observing the gap between the glass sheet and the roller conveyor from the side. This introduces uncertainty and difficulty in adjustment, and if a glass sheet breaks, it will cause significant losses. Therefore, there is an urgent need to provide a glass sheet edge tightness testing device to determine the tightness of the sheet surface, prevent glass sheet breakage, and reduce or eliminate the production losses caused by breakage. Summary of the Invention

[0005] One of the technical problems that this disclosure aims to solve is that currently, the tightness of the glass plate edges can only be judged manually, which involves a lot of uncertainty and difficulty, and is prone to causing the glass plate to break and break.

[0006] To solve the above-mentioned technical problems, this disclosure provides a glass plate edge tightness testing device, which includes: a testing base; A lifting drive mechanism, the drive unit of which is mounted on the test base; and The stress detection mechanism is installed in the lifting part of the lifting drive mechanism. The stress detection part of the stress detection mechanism is equipped with a sliding wheel, and the rotation axis of the sliding wheel is parallel to the rotation axis of the transmission roller. The lifting unit is used to drive the sliding wheel to rise and fall under the drive of the drive unit, and to reach the stress test state; During stress testing, the sliding wheel will lift the edge of the glass plate being transported by the conveying mechanism to a preset height, and the stress detection mechanism will measure the test stress value.

[0007] In some embodiments, the stress detection mechanism further includes: The stress display unit is used to display the stress value measured by the stress testing mechanism.

[0008] In some embodiments, before the stress test state, the lifting unit is also used to drive the sliding wheel to rise and fall to the initial test state; In the initial test state, the sliding wheel contacts the edge area of ​​the glass plate from the bottom side, and the initial stress value measured by the stress detection mechanism is zero, or the initial stress value measured by the stress detection mechanism is corrected to zero.

[0009] In some embodiments, a scale is provided on the test stand along the longitudinal direction, the scale is provided with graduation lines, and a first mark and a second mark are provided at intervals; The lifting section is equipped with a pointer that points towards the scale and is positioned horizontally. When the pointer points to the first indicator, the pulley reaches the initial test state position; When the pointer points to the second mark, the pulley reaches the position of the stress test state.

[0010] In some embodiments, the second identifier is movably set on the scale so that its position on the scale is adjustable.

[0011] In some embodiments, the sliding wheel corresponds to the middle position of the edge region in the width direction.

[0012] In some embodiments, the number of glass plate edge tightness testing devices is at least two sets, and they correspond to the edge regions on both sides of the glass plate, respectively.

[0013] In some embodiments, the preset height is 1-6cm.

[0014] This disclosure also provides a method for testing the tightness of the edge of a glass plate, including: Step S101: Use the drive unit to drive the lifting unit to raise the sliding wheel to a preset height so that the sliding wheel lifts the edge area of ​​the glass plate being transported to achieve the stress test state, and record the test stress value measured by the stress detection mechanism. Step S102: Compare the test stress value with the standard stress value to determine the tightness of the glass plate.

[0015] In some embodiments, the method further includes the following steps prior to step S101: Step S100: The driving unit drives the lifting unit to raise the sliding wheel to the edge area of ​​the glass plate being transported, so as to achieve the initial test state. If the initial stress value measured by the stress detection mechanism is not zero at this time, it is corrected to zero.

[0016] Through the above technical solution, the glass plate edge tightness testing device and method provided in this disclosure, by setting up a test seat, a lifting drive mechanism and a stress detection mechanism, uses the lifting drive mechanism to drive the sliding wheel to lift the edge of the glass plate to a preset height, and the stress detection mechanism accurately measures the test stress value, which can scientifically and accurately judge the tightness of the glass plate edge, effectively prevent the glass plate from exploding, reduce and eliminate the production losses caused by the explosion, avoid the uncertainty of manual judgment and the problem of relying on experience, eliminate the judgment deviation caused by the difference in operator skills, and improve production efficiency and product quality stability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the glass plate edge tightness testing device disclosed in this embodiment; Figure 2 This is a schematic diagram of the glass plate edge tightness testing device disclosed in this embodiment under the initial testing state; Figure 3 This is a schematic diagram of the glass plate edge tightness testing device disclosed in this embodiment under stress testing conditions; Figure 4 This is a schematic diagram of the process structure of the glass plate edge tightness test method disclosed in this embodiment.

[0019] 1. Test stand; 2. Drive unit; 3. Lifting unit; 4. Stress detection mechanism; 5. Sliding wheel; 6. Stress display unit; 7. Scale; 8. First mark; 9. Second mark; 10. Pointer; 11. Glass plate; 11a. Edge area; 12. Conveyor roller. Detailed Implementation

[0020] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0021] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0022] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0024] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0025] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0027] During the production process, the float glass sheet 11 needs to be annealed in an annealing furnace. The float glass sheet 11 is cooled to room temperature by appropriately controlling the temperature in the annealing furnace, so that the thermal stress generated in the float glass sheet 11 is controlled within the allowable range.

[0028] During the annealing process, excessive stress on the edge of the glass plate 11 can easily cause it to break, resulting in significant losses. Currently, the method for judging the tightness of the edge of the glass plate 11 online mainly relies on experienced operators manually lifting the glass plate 11 and observing the gap between it and the roller conveyor from the side. This introduces uncertainty and difficulty in adjustment, requiring continuous adjustments based on long-term data and experience accumulation to reduce the loss from glass plate breakage. If operators are replaced, a new round of training and experience accumulation is needed, which is time-consuming and the effectiveness is uncertain. Therefore, there is an urgent need to provide a glass plate 11 edge tightness testing device to judge the tightness of the plate surface, prevent glass plate breakage, and reduce or eliminate the production losses caused by breakage. Example 1

[0029] Reference Appendix Figure 1 and attached Figure 3 Embodiment 1 of the present invention provides a glass plate 11 edge tightness testing device, which includes: a test base 1; a lifting drive mechanism, the drive part 2 of the lifting drive mechanism being installed on the test base 1; and a stress detection mechanism 4, the lifting part 3 of the lifting drive mechanism being installed on the lifting part of the stress detection mechanism 4, the stress detection part of the stress detection mechanism 4 being equipped with a sliding wheel 5, the rotation axis of the sliding wheel 5 being parallel to the rotation axis of the transmission roller; the lifting part 3 is used to drive the sliding wheel 5 to rise and fall under the drive of the drive part 2, and to reach the stress testing state; in the stress testing state, the sliding wheel 5 lifts the edge region 11a of the glass plate 11 being conveyed by the conveying mechanism to a preset height, and the stress detection mechanism 4 measures the test stress value.

[0030] Specifically, the device provided in this embodiment is used to detect the tightness of the edge of the glass plate 11. The testing process can be selected from the processing steps of the glass plate 11 after annealing, which are close to room temperature (about 35°C-40°C). For example, the testing device can be set at the conveying mechanism between the cross-cutting blade bridge and the breaking roller between the cross-cutting and breaking processes to realize the online measurement of the tightness of the glass plate 11. The measurement can be used as a basis for adjusting the annealing temperature. Moreover, the stress detection of the glass plate 11 can be carried out only when needed under the control of the operator, rather than continuously.

[0031] The test stand 1 is the basic support structure of the entire measuring device. It is located between two adjacent conveying rollers 12 of the conveying mechanism and can be fixed to the bottom surface of the casting.

[0032] The lifting drive mechanism consists of a drive unit 2 and a lifting unit 3. The drive unit 2 is mounted on the test base 1, either on the top surface of the test base 1 or embedded inside the test base 1, such as by setting a mounting groove on the test base 1; no specific limitation is made here. The drive unit 2 provides driving force to drive the lifting unit 3 to move up and down. The lifting drive mechanism can have various driving forms, such as, but not limited to, hydraulic drive, screw drive, rack and pinion drive, pneumatic drive, electric drive, and other single or combined driving forms, with the aim of achieving stable and slow lifting and lowering of the lifting unit 3 by the drive unit 2.

[0033] The stress-driven mechanism is installed in the lifting part 3 of the lifting drive mechanism. A sliding wheel 5 is mounted on the top of the stress-detecting part, which performs stress detection. When the sliding wheel 5 contacts the glass plate 11 during transport, it can rotate relative to the glass plate 11. Its rotation axis is parallel to the rotation axis of the transmission roller. Its material can be, but is not limited to, steel, plastic, graphite, etc., as long as it does not scratch the glass. The stress detection method of the part is not limited to one type; for example, it can be a resistance strain gauge type, a sensor type, or a piezoelectric type. The aim is to capture the physical quantity change generated after the sliding wheel 5 contacts the glass plate 11, convert it into an electrical signal, and finally calculate the corresponding stress value through the signal processing module.

[0034] The stress driving mechanism may also include a stress display unit 6, which displays the stress value measured by the stress detection mechanism 4. It can be used to intuitively present the stress detection results. The presentation format may include, but is not limited to, numbers, curves, etc., so that operators can read and analyze them directly.

[0035] In this embodiment, the glass plate 11 edge tightness testing device, when in operation, drives the lifting unit 2 to drive the lifting unit 3 to raise the sliding wheel 5 until a stress testing state is reached. This stress testing state refers to the sliding wheel 5 lifting the edge region 11a of the glass plate 11 being conveyed by the conveying mechanism to a preset height. At this time, the stress detection mechanism 4 performs stress detection on the edge region 11a of the glass plate 11, thereby measuring the test stress value. After obtaining the test stress value, it can be compared with the "standard stress value" accumulated over a long period to determine the tightness of the glass plate 11. The preset height can be determined based on the actual condition of the glass plate 11, pre-test experimental results, operator experience, statistical analysis, etc. For example, it can be, but is not limited to, set between 1-6 cm. Figure 3 The diagram shows the state in which the glass plate 11 is lifted. It does not limit the glass plate 11 to undergo the deformation shown in the diagram. During the stress detection process of the testing device provided in this embodiment, the edge area 11a of the glass plate 11 will not be damaged. It is sufficient to ensure that the preset height is appropriate and that the lifting action of the sliding wheel 5 is slow and the speed is constant.

[0036] The standard stress value can be a stress range. If the tested stress value is within the standard stress range, it indicates that the tension is appropriate. Alternatively, the standard stress value can be a stress value. If the tested stress value is within the upper or lower deviation range of the standard stress value, it indicates that the tension is appropriate. Taking the standard stress value as the stress range as an example, if the tested stress value is lower than the stress range, it indicates that the edge of the glass plate 11 is too loose, possibly due to excessively high annealing temperature causing the glass plate 11 to soften. If the tested stress value is higher than the stress range, it may be due to insufficient annealing temperature or excessively rapid cooling rate, posing a risk of plate breakage. Therefore, when there is a certain deviation between the tested stress value and the standard stress value at the edge of the glass plate 11, the temperature of the pre-annealing zone, the annealing soaking zone, and the left, middle, and right parts of the transverse plate surface during important annealing can be adjusted based on the tension of the glass plate 11, thereby reducing the possibility of plate breakage.

[0037] Based on the above, this embodiment of the invention proposes a glass plate 11 edge tightness testing device. By setting up a test base 1, a lifting drive mechanism, and a stress detection mechanism 4, the lifting drive mechanism drives the sliding wheel 5 to lift the edge of the glass plate 11 to a preset height, and the stress detection mechanism 4 accurately measures the test stress value. This device can scientifically and accurately determine the tightness of the glass plate 11 edge, effectively prevent the glass plate 11 from exploding, reduce and eliminate production losses caused by exploding, avoid the uncertainty of manual judgment and the problem of relying on experience, eliminate judgment deviations caused by differences in operator skills, and improve production efficiency and product quality stability.

[0038] Reference Appendix Figure 2 In specific implementation, before the stress test state, the lifting part 3 is also used to drive the sliding wheel 5 to rise and fall to the initial test state; in the initial test state, the sliding wheel 5 contacts the edge area 11a of the glass plate from the bottom side, and the initial stress value measured by the stress detection mechanism 4 is zero, or the initial stress value measured by the stress detection mechanism 4 is corrected to zero.

[0039] Specifically, to improve the accuracy of test results, the technical solution adopted in this invention configures the testing process of the device into two stages: "initial calibration" and "dynamic testing." After the glass plate 11 is transported to the corresponding test area of ​​the testing device, when testing is required, the drive unit 2 drives the lifting unit 3 to raise the sliding wheel 5 to lightly touch the bottom edge of the glass plate 11. At this time, the stress detection mechanism 4 measures the initial stress value, which should be zero. If it is not zero, the operator calibrates it to zero as a benchmark for subsequent stress testing. This eliminates the interference of stress deviation caused by environmental factors such as the weight of the glass plate 11 and uneven support stiffness of the conveyor roller 12 on the measurement results, thereby improving test accuracy.

[0040] Reference Appendix Figure 2 and attached Figure 3In specific implementation, a scale 7 is set on the test seat 1 along the longitudinal direction, the scale 7 is set with graduation lines, and a first mark 8 and a second mark 9 are set at intervals; the lifting part 3 is set with a pointer 10, the pointer 10 is facing the scale 7 and is set along the transverse direction; when the pointer 10 points to the first mark 8, the sliding wheel 5 reaches the position of the initial test state; when the pointer 10 points to the second mark 9, the sliding wheel 5 reaches the position of the stress test state.

[0041] Specifically, to improve the positional accuracy of the sliding wheel 5 in both the initial test state and the stress test state, the technical solution adopted in this invention includes a scale 7 longitudinally arranged on the test base 1. The scale 7 can be located on the side of the lifting drive mechanism. The scale 7 has graduation lines, which can be set to one fine line per millimeter. The scale 7 also has a first mark 8 and a second mark 9 serving as positioning references. The first mark 8 is positioned lower than the second mark 9. The intuitiveness of the position indication can be improved by using different colors for the first mark 8 and the second mark 9. A horizontally positioned pointer 10 is provided on the lifting part 3, with the arrow of the pointer 10 pointing towards the side where the scale 7 is located. Before testing, the positions of the first mark 8 and the second mark 9 can be determined experimentally. This ensures that during testing, when the lifting part 3 rises until the pointer 10 points to the first mark 8, the sliding wheel 5 reaches the initial test state position; and when the lifting part 3 rises again until the pointer 10 points to the second mark 9, the sliding wheel 5 reaches the stress test state position. This allows for precise control of the lifting position of the sliding wheel 5, reducing errors.

[0042] In practice, the second mark 9 is movable on the scale 7 so that its position on the scale 7 is adjustable.

[0043] Specifically, in order to improve the applicability of the device and make it suitable for different glass plates 11 or for dynamic adjustments to the test status of the device, the technical solution adopted in this invention allows for the second mark 9 to be movably set on the scale 7. The movable connection method is not limited to one type. For example, it can be achieved by sliding connection, plug-in connection, or locking with screws or other structures. Through the movable connection of the second mark 9 on the scale 7, the position of the second mark 9 on the scale 7 can be adjusted. Thus, when the position of the second mark 9 needs to be adjusted due to the replacement of glass plates 11 of different thicknesses or deviations in the mark position, the second mark 9 can be adjusted and re-fixed.

[0044] Reference Appendix Figure 1 In a specific implementation, the sliding wheel 5 corresponds to the middle position of the side region 11a in the width direction.

[0045] Specifically, the edge region 11a of the glass plate 11 is a strip-shaped area extending a certain width from the outer edge. This area is prone to stress concentration due to differences in the annealing process, and is a key part of the glass plate 11 inspection. The uniformity of its stress distribution directly affects the product qualification rate. In order to reduce the test deviation, the technical solution adopted in this invention can position the sliding wheel 5 at the middle position of the edge region 11a in the width direction. This can avoid bending or cracking of the glass edge due to local stress concentration caused by contact point offset, and at the same time ensure that the stress measurement data truly reflects the overall strength of the edge.

[0046] Reference Appendix Figure 1 In specific implementation, the number of edge tightness testing devices for glass plate 11 is at least two sets, and they correspond to the edge regions 11a on both sides of glass plate 11 respectively.

[0047] Specifically, in order to more comprehensively evaluate the performance of the edge region 11a of the glass plate 11, the technical solution adopted in this invention can detect the stress of the edge region 11a of the glass plate 11 through a double-sided symmetrical detection method. The two sets of devices are started at the same time, which can avoid the possibility of missing potential defects on the other side due to single-sided detection. Furthermore, by comparing the test stress values ​​of the two edge regions 11a, the source of defects can be accurately determined, avoiding blind adjustments to the entire production line. It can also avoid the risk of cracking due to uneven stress caused by the asymmetry of stress in the two edge regions 11a. Example 2

[0048] Reference Appendix Figure 4 Embodiment 2 of the present invention proposes a method for testing the tightness of the edge of a glass plate 11, which includes the following steps: Step S100: Drive the lifting unit 3 with the drive unit 2 to raise the sliding wheel 5 until the sliding wheel 5 contacts the edge area 11a of the glass plate 11 being transported, so as to achieve the initial test state. If the initial stress value measured by the stress detection mechanism 4 is not zero at this time, it is corrected to zero. Specifically, the driving unit 2 drives the lifting unit 3 to raise the sliding wheel 5, so that it contacts the edge region 11a of the glass plate 11 being transported. At this time, the stress detection mechanism 4 collects the initial stress value in real time. If the initial value is not zero due to uneven stress distribution of the glass plate 11 itself or transmission vibration, the initial value can be corrected to zero to eliminate environmental interference, ensure the accuracy of subsequent test benchmarks, and make the test data truly reflect the stress change of the edge region 11a after being subjected to force.

[0049] Step S101: Drive the lifting unit 3 using the drive unit 2 to raise the sliding wheel 5 to a preset height so that the sliding wheel 5 lifts the edge area 11a of the glass plate 11 being transported to achieve the stress test state, and record the test stress value measured by the stress detection mechanism 4. Specifically, the drive unit 2 continues to drive the lifting unit 3, causing the sliding wheel 5 to rise further, lifting the edge of the glass plate 11 to a preset height. The edge undergoes elastic or plastic deformation due to the lifting. The stress detection mechanism 4 collects the stress value during the deformation process in real time and records it as the test stress value. The lifting height is precisely controlled with an accuracy of ±0.01mm by means of an encoder or laser rangefinder to ensure that the loading conditions are consistent for each test.

[0050] Step S102: Compare the test stress value with the standard stress value to determine the tightness of the glass plate 11; Specifically, the test stress value recorded in step S101 is compared with the preset standard stress value. Taking the standard stress value as the stress value range as an example, if the test value is within the range, the tightness of the edge of the glass plate 11 is deemed acceptable; if it is below the lower limit of the range, it is deemed "too loose"; if it is above the upper limit of the range, it is deemed "too tight". In the case where the edge area 11a of the glass plate 11 is deemed too loose or too tight, the temperature of the pre-annealing zone, the annealing soaking zone, and the left, middle, and right parts of the transverse plate surface in the important annealing zone can be adjusted based on the tightness of the glass plate 11 to reduce the phenomenon of plate breakage. After adjustment, the tightness of the edge area 11a of the glass plate 11 can be measured again. If it is still deemed too loose or too tight, a new round of adjustment is performed until the tightness of the edge area 11a is acceptable after testing, and the annealing temperature adjustment stops.

[0051] During the testing process, the standard stress value can be adjusted according to the actual situation. Specifically, a large amount of data can be collected during the testing process. For glass plates 11 with different specifications and production process conditions, a large amount of stress data can be continuously collected using a glass plate 11 edge tightness test device. This data can cover the stress value range of the glass plate 11 edge under normal conditions. The collected stress data can also be analyzed and classified according to the specifications and production process parameters of the glass plate 11. For each type of ratio, a reasonable standard stress value can be determined through statistical analysis and other methods. This can be a single stress value or a stress value range.

[0052] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0053] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A glass plate edge tightness testing device, disposed between two adjacent conveying rollers (12) in a conveying mechanism, characterized in that, include: Test socket (1); A lifting drive mechanism, wherein the drive part (2) of the lifting drive mechanism is mounted on the test base (1); and A stress detection mechanism (4) is installed on the lifting part (3) of the lifting drive mechanism. The stress detection part of the stress detection mechanism (4) is equipped with a sliding wheel (5). The rotation axis of the sliding wheel (5) is parallel to the rotation axis of the transmission roller. The lifting part (3) is used to drive the sliding wheel (5) to rise and fall under the drive of the driving part (2) and reach the stress test state; Under the stress test state, the sliding wheel (5) will lift the edge region (11a) of the glass plate (11) being transported by the conveying mechanism to a preset height, and the stress detection mechanism (4) will measure the test stress value.

2. The glass plate edge tightness testing device according to claim 1, characterized in that, The stress detection mechanism (4) also includes: The stress display unit (6) is used to display the stress value measured by the stress detection mechanism (4).

3. The glass plate edge tightness testing device according to claim 2, characterized in that, Before the stress test state, the lifting part (3) is also used to drive the sliding wheel (5) to rise and fall to the initial test state; In the initial test state, the sliding wheel (5) contacts the edge region (11a) of the glass plate from the bottom side, and the initial stress value measured by the stress detection mechanism (4) is zero, or the initial stress value measured by the stress detection mechanism (4) is corrected to zero.

4. The glass plate edge tightness testing device according to claim 3, characterized in that, The test stand (1) is provided with a scale (7) along the longitudinal direction. The scale (7) is provided with graduation lines and a first mark (8) and a second mark (9) arranged at intervals. The lifting part (3) is provided with a pointer (10), which faces the scale (7) and is arranged horizontally; When the pointer (10) points to the first identifier (8), the sliding wheel (5) reaches the position of the initial test state; When the pointer (10) points to the second identifier (9), the sliding wheel (5) reaches the position of the stress test state.

5. The glass plate edge tightness testing device according to claim 4, characterized in that, The second mark (9) is movably set on the scale (7) so that its position on the scale (7) is adjustable.

6. The glass plate edge tightness testing device according to claim 1, characterized in that, The sliding wheel (5) corresponds to the middle position of the side region (11a) in the width direction.

7. The glass plate edge tightness testing device according to claim 1, characterized in that, The number of the edge tightness testing devices of the glass plate (11) is at least two sets, and they correspond to the edge regions (11a) on both sides of the glass plate (11).

8. The glass plate edge tightness testing device according to claim 1, characterized in that, The preset height is 1-6cm.

9. A method for testing the tightness of a glass plate edge, using the glass plate edge tightness testing device as described in any one of claims 1-8, characterized in that... include: Step S101: Use the drive unit (2) to drive the lifting unit (3) to drive the sliding wheel (5) to rise to the sliding wheel (5) to lift the edge area (11a) of the glass plate (11) being transported to a preset height, so as to achieve the stress test state, and record the test stress value measured by the stress detection mechanism (4). Step S102: Compare the test stress value with the standard stress value to determine the tightness of the glass plate (11).

10. The method for testing the tightness of the glass plate edge according to claim 9, characterized in that, The procedure before step S101 includes: Step S100: The driving unit (2) drives the lifting unit (3) to move the sliding wheel (5) up to the edge area (11a) of the glass plate (11) being transported, so as to achieve the initial test state. If the initial stress value measured by the stress detection mechanism (4) is not zero at this time, it is corrected to zero.

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