Detection equipment for new material display screen processing

Abstract

The invention relates to the technical field of tension tests, and discloses a detection device for processing a new material display screen, which comprises a test bed, a static clamping seat and a movable clamping seat are mounted on the test bed, the movable clamping seat moves vertically, a to-be-detected support column is clamped between the static clamping seat and the movable clamping seat, and the to-be-detected support column is clamped between the static clamping seat and the movable clamping seat. A bottom end face cleaning assembly and an auxiliary positioning piece are installed in the static clamping base, a linkage pin slides along a spiral guide sliding groove to drive a lifting rotating shaft to rotate synchronously, cleaning and scraping ribs form descending-rotating composite motion, the movement enables the cleaning and scraping ribs to cover the bottom end face of a supporting column at a continuously-changing contact angle, and the cleaning and scraping effect is improved. Hard foreign matter can be stripped without dead corners, dust is softly removed through gradual scraping, deformation of the end face of the supporting column body is avoided, meanwhile, the spiral structure can penetrate into rib line gaps of the ribbed supporting column body to remove hidden impurities, it is ensured that the end face forms a flat contact face, and the problem of non-uniform supporting is thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of tensile testing technology, specifically to a new testing device for processing display screens made of new materials. Background Technology

[0002] The columnar support of the display is the core load-bearing component of the display device and is widely used in office, home, and industrial control scenarios. As display technology develops towards lightweight and thinness, its materials have been upgraded to new composite materials such as carbon fiber reinforced plastics and magnesium-aluminum alloys. Although these materials have the advantages of being lightweight and having high strength, the processing technology is complex and the mechanical properties fluctuate greatly, which puts forward higher requirements for testing accuracy.

[0003] The tensile strength, yield strength, and other mechanical parameters of this support directly determine the stability and lifespan of the monitor after installation. It must withstand the weight of the equipment and resist daily impacts and vibrations. If its performance is substandard, it can easily lead to safety hazards such as breakage and tipping. At the same time, it is a key reference component for display assembly, requiring precise connection with precision parts such as the display panel and back panel. If it is put into assembly without prior testing, the cost of disassembly and rework will be extremely high when defects are discovered later, and it may also damage precision parts, causing greater losses. Therefore, the support must undergo professional tensile testing after production and before assembly to ensure that its quality meets the requirements.

[0004] Its core detection logic is "clamping-stretching-data acquisition": the lower end of the support is fixed to the static clamp, and the upper end is clamped by the moving clamp. The moving clamp moves vertically at a constant speed to apply axial tension. The tension and deformation data are collected by the sensor to generate a report. The support must be subjected to pure axial force throughout the process to ensure the accuracy of the detection data.

[0005] However, existing tensile testing devices generally suffer from two major defects in the testing of columnar supports: "insufficient centering accuracy" and "burrs and impurities remaining on the bottom surface," and their performance is extremely poor when adapted to new composite materials.

[0006] Regarding centering and positioning, existing devices mostly use a single-specification circular recessed hole for initial centering, which has obvious limitations: First, existing devices can only match supports of specific diameters (outer diameter is usually 6-40mm, with various specifications), and cannot adapt to the irregular cross-sections of new materials. Frequent replacement of clamping modules is required to test different products, resulting in extremely low efficiency during batch sampling inspection. Second, they are prone to accumulating dirt and clogging. The recessed hole easily accumulates burrs, debris, fine processing dust and impurities from new materials. After accumulation, it will raise the support, causing the axis to deviate. Third, centering is not visible, and slight misalignment is difficult to detect. It can only be detected through abnormal test data, resulting in invalid tests and increased costs.

[0007] Meanwhile, existing equipment lacks a dedicated bottom surface treatment structure. During the production and handling of the support, overflow burrs remain in the injection molding gap, and cutting debris is left behind. Burrs on new materials are harder and more difficult to clean. Impacts during handling can also create protrusions or dust. These burrs and impurities create "non-uniform support." In particular, new composite materials are sensitive to stress concentration; even tiny burrs can cause localized stress concentration, resulting in the bottom of the support not being parallel to the reference surface. This adds a lateral bending moment during tension, causing measured tensile strength deviations of 5%-10%, or even premature fracture, rendering the data invalid. In the long term, it also accelerates fixture wear and increases equipment maintenance costs.

[0008] Therefore, this invention proposes a new testing device for processing material display screens. Summary of the Invention

[0009] The purpose of this invention is to provide a new material display screen processing testing device to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a new material display screen processing testing device, comprising a test bench, on which a static clamping seat and a movable clamping seat are installed. The movable clamping seat moves vertically, and the support column to be tested is clamped between the static clamping seat and the movable clamping seat. The static clamping seat has a bottom end face cleaning component and an auxiliary positioning component installed inside, and the bottom end face cleaning component and the auxiliary positioning component are both located at the center of the non-clamping area of ​​the static clamping seat. The auxiliary positioning component is used for preliminary positioning of the support column to be tested. When the support column to be tested is placed on the bottom end face cleaning component, the bottom end face cleaning component will move downward and rotate, thereby cleaning the lower surface of the support column.

[0011] Preferably, the auxiliary positioning component is located above the bottom surface cleaning component, and the auxiliary positioning component can enclose and form a variable inner diameter hole to adapt to support columns of different diameters, so as to perform preliminary coaxial positioning of the support column to be tested.

[0012] Preferably, the top of the bottom surface cleaning component is located in the auxiliary positioning component, and the grippers of the static clamping seat and the dynamic clamping seat move symmetrically from left to right to clamp the support column to be tested from both sides.

[0013] Preferably, the bottom surface cleaning assembly includes a base fixedly connected to the surface of the static clamping seat, the top of the base extends upward and a lifting shaft is slidably connected inside, and a reset elastic element is fixedly connected between the bottom of the lifting shaft and the static clamping seat.

[0014] Preferably, the top of the lifting shaft is fixedly connected with a cleaning ridge, which is a spiral continuous raised structure used to contact and clean the lower surface of the support column to be tested.

[0015] Preferably, a guide groove is formed through the surface of the base, and a linkage pin is fixedly connected to the surface of the lifting shaft. The linkage pin slides in cooperation with the guide groove, and the guide groove is a downward-sloping spiral groove to drive the lifting shaft to rotate when it descends.

[0016] Preferably, a collection seat is fixedly connected to the surface of the base, the inner diameter of the collection seat is larger than that of the base, and a retaining edge is provided on the top of the collection seat.

[0017] Preferably, the inner edge of the retaining edge is an inclined surface facing the inside of the collection seat, which is used to guide the debris after cleaning to gather into the collection seat.

[0018] Preferably, the auxiliary positioning component includes a positioning ring seat fixedly connected to the surface of the static clamping seat, and a plurality of radial adjustment blocks are slidably fitted on the surface of the positioning ring seat, with a clamping elastic element provided on the side of the plurality of radial adjustment blocks away from the center of the positioning ring seat.

[0019] Preferably, the radial adjustment block has a short upper part and a long lower part arc-shaped structure on the side near the center of the positioning ring seat, and the radial adjustment block and the surface of the positioning ring seat are provided with a gap for the clamping elastic element to be accommodated. The clamping elastic element provides the radial adjustment block with a circumferential tension force pointing towards the center of the positioning ring seat.

[0020] Preferably, the reset elastic element is a spring, and the clamping elastic element can be selected as a helical spring evenly distributed in the circumferential direction, or an annular elastic sealing ring sleeved on the outside of several radial adjustment blocks, so as to provide a continuous circumferential tension force to the radial adjustment blocks through elastic deformation.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. When the support column is lowered and contacts the cleaning ridges, its own weight will push the lifting shaft to slide downwards along the internal channel of the base. The sliding action of the linkage pin along the spiral guide groove will drive the lifting shaft to rotate synchronously, so that the cleaning ridges form a "descending-rotating" compound motion. This motion allows the cleaning ridges to cover the bottom end face of the support column with a continuously changing contact angle, which not only achieves the removal of hard foreign objects without dead angles, but also gently removes dust through progressive scraping, avoiding deformation of the end face of the support column. At the same time, the spiral structure can penetrate into the gaps between the ribs of the ribbed support column to remove hidden impurities, ensuring that the end face forms a flat contact surface, completely eliminating the problem of "non-uniform support", so that the support column is subjected to uniform force when in contact with the static clamp, and providing end face cleanliness guarantee for the pure axial force of the tensile test.

[0022] 2. Under the circumferential tension of the clamping elastic element, the radial adjusting block will automatically slide outward as the support column to be tested is inserted, simultaneously completing the dynamic adjustment of the inner diameter of the enclosing hole, and always maintaining a tight fit with the surface of the support column. This adjustment action does not require manual disassembly or replacement of any parts, and can adapt to the positioning requirements of support columns of different diameters, greatly reducing the time spent on specification switching in batch sampling inspection. At the same time, the arc-shaped contact surface can evenly distribute the positioning pressure, avoiding damage to the surface of the support column due to excessive local force. Furthermore, the precise inner diameter fit can directly ensure that the axis of the support column is aligned with the central axis of the static clamp, laying a solid foundation for the pure axial force of the subsequent tensile test from the positioning source, and reducing the risk of test data fluctuations caused by axis deviation.

[0023] 3. The debris generated during the cleaning of the ridges will spread outwards under the combined action of the spiral thrust and gravity. At this time, the inclined baffle at the top of the collection seat will actively guide the debris into the collection seat. This guiding action does not require additional power and can prevent the debris from scattering to other areas of the fixture or re-adhering to the surface of the support column, effectively maintaining the cleanliness of the test environment. At the same time, the collected debris can be cleaned regularly through the preset chip removal structure, reducing the wear of impurities on components such as the base and lifting shaft, extending the service life of key components of the device, ensuring the stability of the operation of each structure during long-term high-frequency testing, and reducing equipment maintenance costs and failure probability. Attached Figure Description

[0024] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the main structure of the present invention; Figure 2 This is a partial three-dimensional schematic diagram of the main structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged 3D structural diagram at point A; Figure 4 This is a three-dimensional cross-sectional view of the static clamping seat of the present invention; Figure 5 For the present invention Figure 4 Enlarged 3D structural schematic diagram at point B; Figure 6 This is a three-dimensional disassembled view of the bottom surface cleaning component of the present invention; Figure 7 This is a three-dimensional schematic diagram of the auxiliary positioning component of the present invention; Figure 8 This is a three-dimensional disassembly diagram of the auxiliary positioning component of the present invention.

[0025] In the picture: 1. Test bench; 21. Static clamping seat; 22. Dynamic clamping seat; 31. Bottom surface cleaning assembly; 311. Base; 3111. Guide groove; 3112. Collection seat; 3113. Edge retainer; 312. Lifting shaft; 3121. Linkage pin; 313. Scraping ridge; 314. Reset elastic element; 32. Auxiliary positioning element; 321. Positioning ring seat; 322. Radial adjusting block; 323. Clamping elastic element. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0027] It should be noted that the core function of the static clamping seat 21 and the dynamic clamping seat 22 is only to provide stable clamping for the support column to be tested. Neither of them involves the positioning or cleaning related structures of the innovative design of this device, and they only serve as fixed carriers for the support column during the test. The test bench 1 is equipped with a clamping drive mechanism (such as a hydraulic cylinder or electric push rod) that drives the opening and closing of the jaws of the static clamping seat 21 and the moving clamping seat 22, and a moving drive mechanism (such as a screw drive or synchronous belt drive) that drives the moving clamping seat 22 to move vertically up and down, so as to realize the stretching action after the support column is clamped.

[0028] The basic clamping structures of the aforementioned clamping drive mechanism, moving drive mechanism, static clamping seat 21, and moving clamping seat 22 are all existing technologies in terms of working principle and specific structure (such as conventional hydraulic clamping control and linear drive lifting schemes in the industry). Therefore, given the universality of the above structures, their specific principles will not be elaborated further. Instead, the focus will be on the collaborative working process and technical advantages of the bottom end face cleaning component 31 and the auxiliary positioning component 32, which are innovatively designed in this device.

[0029] It should be noted that this device is mainly used for batch sampling inspection of columnar supports for displays. According to the quality control standards of the display equipment industry, samples must be randomly selected from each batch of columnar supports for tensile testing to determine whether the mechanical properties of the entire batch of products meet the standards.

[0030] During the production, storage, and transportation of these sampled support columns, various foreign objects inevitably adhere to their surfaces: during production, injection molding may leave behind overflow burrs, and cutting may leave behind plastic / metal scraps. When using new composite materials such as carbon fiber reinforced plastics and magnesium-aluminum alloys for production, even finer material dust will be generated. If not properly protected during storage, the surface is easily contaminated with environmental dust, and the end sections may form bulges due to slight bumps. During transportation and loading / unloading, packaging debris and impurities from the handling process may also adhere to the surface.

[0031] If a support column with foreign objects is placed directly into the testing device, the burrs, particulate impurities, or protrusions on the surface will form "non-uniform support" between the bottom of the support column and the contact surface of the fixture, causing the support column to be unable to keep parallel to the reference surface of the fixture, and its axis will form an angle with the loading axis of the device.

[0032] This non-parallelism causes the support column to bear an additional bending moment instead of pure axial tension when stretched, resulting in deviations in key data such as tensile strength and yield strength (usually 5% to 10% lower). In particular, new composite materials are more sensitive to stress concentration. Even a small foreign object can cause local stress concentration, leading to premature fracture of the support column on the weak side supported by the foreign object. The fracture surface often deviates from the gauge length, rendering the test invalid and requiring resampling and testing. This affects testing efficiency and increases production costs. In the long run, uneven force on the fixture will also accelerate the wear of the grippers and shorten the service life of the equipment.

[0033] Therefore, this device, through the synergistic action of the bottom surface cleaning component 31 and the auxiliary positioning component 32, solves the parallelism problem caused by foreign objects at its source, ensuring the accuracy and reliability of batch test data and providing a scientific basis for the quality control of the display support column. Please refer to... Figures 1 to 8 The present invention provides an embodiment: A new material display screen processing testing device includes a test bench 1. A static clamping seat 21 and a movable clamping seat 22 are installed on the test bench 1. The movable clamping seat 22 moves vertically. The support column to be tested is clamped between the static clamping seat 21 and the movable clamping seat 22. The static clamping seat 21 is equipped with a bottom end face cleaning component 31 and an auxiliary positioning component 32. The bottom end face cleaning component 31 and the auxiliary positioning component 32 are both located at the center of the non-clamping area of ​​the static clamping seat 21. The auxiliary positioning component 32 is used to perform preliminary positioning of the support column to be tested. When the support column to be tested is placed on the bottom end face cleaning component 31, the bottom end face cleaning component 31 will move downward and rotate, thereby cleaning the lower surface of the support column.

[0034] It should be noted that the auxiliary positioning component 32 is located above the bottom end face cleaning assembly 31. The auxiliary positioning component 32 can enclose and form a variable inner diameter hole to adapt to support columns of different diameters, so as to perform preliminary coaxial positioning of the support column to be tested. The top of the bottom end face cleaning assembly 31 is located in the auxiliary positioning component 32. The jaws of the static clamping seat 21 and the moving clamping seat 22 move symmetrically from left to right to clamp the support column to be tested from both sides. The bottom end face cleaning assembly 31 includes a base 311 fixedly connected to the surface of the static clamping seat 21. The top of the base 311 extends upward and is internally slidably connected to a lifting shaft 312. A reset elastic element 314 is fixedly connected between the bottom of the rotating shaft 312 and the stationary clamping seat 21. A cleaning ridge 313 is fixedly connected to the top of the lifting rotating shaft 312. The cleaning ridge 313 is a spiral continuous raised structure used to contact and clean the lower surface of the support column to be tested. A guide groove 3111 is opened through the surface of the base 311. A linkage pin 3121 is fixedly connected to the surface of the lifting rotating shaft 312. The linkage pin 3121 slides with the guide groove 3111, and the guide groove 3111 is a downward inclined spiral groove to drive the lifting rotating shaft 312 to rotate when descending. A collection base 3112 is fixedly connected, and the inner diameter of the collection base 3112 is larger than that of the base 311. A retaining edge 3113 is provided on the top of the collection base 3112. The inner edge of the retaining edge 3113 is inclined towards the inner side of the collection base 3112 to guide the debris from cleaning into the collection base 3112. The auxiliary positioning component 32 includes a positioning ring seat 321 fixedly connected to the surface of the static clamping seat 21. Several radial adjustment blocks 322 are slidably fitted on the surface of the positioning ring seat 321. A clamping elastic element 323 is provided on the side of the radial adjustment blocks 322 away from the center of the positioning ring seat 321. The side near the center of the positioning ring seat 321 has a short upper part and a long lower part arc-shaped structure, and the radial adjustment block 322 and the surface of the positioning ring seat 321 have a gap for the clamping elastic member 323 to be accommodated. The clamping elastic member 323 provides the radial adjustment block 322 with a circumferential tension force pointing towards the center of the positioning ring seat 321. The reset elastic member 314 is a spring. The clamping elastic member 323 can be selected as a helical spring evenly distributed along the circumference, or an annular elastic sealing ring sleeved on the outside of several radial adjustment blocks 322, so as to provide a continuous circumferential tension force to the radial adjustment block 322 through elastic deformation.

[0035] Specifically, when conducting a tensile test on the support column, the operator first aligns the lower end of the support column to be tested with the center area of ​​the auxiliary positioning component 32. At this time, several radial adjustment blocks 322 in the positioning ring seat 321 are in an initial convergent state under the circumferential tension of the clamping elastic component 323.

[0036] Because the radial adjustment block 322 has a short upper part and a long lower part arc-shaped structure on the side near the center, when the lower end of the support column contacts the radial adjustment block 322, it will squeeze the radial adjustment block 322 to slide outward through the guiding effect of the arc surface. The clamping elastic element 323 (whether it is a helical spring or an annular elastic sealing ring) will undergo elastic deformation as the radial adjustment block 322 slides, thereby causing the inner diameter formed by the enclosed area of ​​several radial adjustment blocks 322 to change synchronously. Finally, it adapts to the diameter of the support column (outer diameter is usually 6-40mm) and irregular cross-sections such as plum blossom and polygon, forming a tightly fitting variable inner diameter hole. This process of adaptive adjustment of the inner diameter is essentially a precise preliminary positioning of the bottom of the support column.

[0037] According to current industry standards such as "General Technical Conditions for Columnar Supports of Displays", the rod of a qualified support column has already been guaranteed to have a high degree of coaxiality through the production process. During the test, there is no need to perform complex full-section alignment of the entire support column. It is only necessary to ensure that it is aligned with the central axis of the static clamp 21 through bottom positioning, which can lay the foundation for the stress stability of the subsequent tensile test.

[0038] It should be noted that the positioning design of existing support column tensile testing devices mostly adopts the "fixed diameter recessed hole" structure: that is, a single-size circular recessed hole is preset on the surface of the fixture. The operator needs to insert the lower end of the support column into the recessed hole first, and then start the fixture clamping mechanism to complete the fixation.

[0039] This design has significant limitations: on the one hand, the diameter of the recessed hole is fixed and can only be adapted to support columns of a specific diameter. When inspecting support columns of different specifications (such as Φ12mm and Φ20mm) or irregular cross-sections, it is necessary to frequently disassemble and replace the fixture module with the corresponding recessed hole, which is not only cumbersome and time-consuming, but also increases the equipment maintenance cost.

[0040] On the other hand, the "recessed structure" of the recessed hole easily accumulates burrs and debris, residual plastic / metal dust and environmental impurities from the surface of the support column. After long-term use, it is easy to cause blockage. If it is not cleaned in time, the bottom of the support column will be raised by the accumulated foreign objects when it is inserted, which will prevent the bottom of the support column from fully fitting with the bottom surface of the recessed hole. This directly damages the parallelism between the bottom of the support column and the reference surface of the fixture, and thus generates an additional bending moment during the tensile process, affecting the accuracy of the test data.

[0041] In addition, in the existing design, if there is a slight misalignment after the support column is inserted into the recessed hole, it is difficult for the operator to notice it visually. The problem can only be discovered through the coaxiality test after clamping, which further increases the rework rate of the test.

[0042] In contrast, the auxiliary positioning component 32 of this device adopts "circumferential radial adjustment block 322 linkage positioning". Its core function is "preliminary auxiliary alignment" rather than "forced fixation": several radial adjustment blocks 322 are evenly distributed around the positioning ring seat 321 and are all within the operator's field of vision. When the operator places the support column, if the support column is tilted (such as tilting towards one side of the radial adjustment block 322), it will be clearly observed that the radial adjustment block 322 on the corresponding side is not in contact with the surface of the support column (or there is no obvious sliding after contact), while the radial adjustment block 322 on the other side is excessively squeezed. Through this intuitive "contact state difference", the operator can quickly judge the tilt direction of the support column and then fine-tune the position of the support column until all radial adjustment blocks 322 are tightly attached to the surface of the support column, ensuring that the circumferential force at the bottom of the support column is uniform.

[0043] This design adapts to support columns of various specifications and cross-sections through "variable inner diameter," eliminating the need for frequent component replacements and avoiding the problem of dirt accumulation and clogging in recessed holes. At the same time, it improves positioning accuracy through "visual adjustment," fully leveraging the auxiliary role of circumferential positioning and providing a prerequisite guarantee for the efficient operation of the subsequent bottom end cleaning component 31 and the stable clamping of the fixture.

[0044] As the support column continues to descend, its lower end passes through the auxiliary positioning member 32 and comes into contact with the cleaning ridge 313 on the top of the bottom end cleaning component 31. At this time, the weight of the support column itself (or the slight downward pressure applied by the operator) will overcome the preload of the reset elastic member 314 and push the lifting shaft 312 to slide downward along the internal channel of the base 311.

[0045] Since the linkage pin 3121 on the surface of the lifting shaft 312 and the spiral guide groove 3111 on the surface of the base 311 form a sliding fit, and the guide groove 3111 has a downward inclined spiral structure, when the lifting shaft 312 descends, the linkage pin 3121 will be forced to produce circumferential displacement along the spiral trajectory of the guide groove 3111, thereby driving the lifting shaft 312 to rotate synchronously.

[0046] This combined "descent-rotation" motion is transmitted to the cleaning ridges 313 at the top of the lifting shaft 312, causing it to form a dynamic contact with the lower surface of the support column through a spirally continuous raised structure. The spirally continuous raised design can cover the entire end face of the bottom of the support column through continuously changing contact points, which not only avoids local missed scraping, but also gradually peels off the attached foreign matter with the help of the spiral propulsion force, ensuring that there are no dead corners in the cleaning.

[0047] It should be noted that the spiral continuous structure of the scraping ridge 313 has multiple advantages: First, the continuous distribution of the protrusions makes the cleaning action "gradual" rather than an instantaneous impact. It can effectively scrape off hard attachments such as burrs, overflow, and cutting debris, while gently peeling off light impurities such as molding dust and surface oil, avoiding deformation of the bottom of the support column made of new composite materials such as carbon fiber reinforced plastic and magnesium-aluminum alloy. Second, the spiral trajectory and the rotation and descent of the lifting shaft 312 work together to make the contact angle between the protrusions and the bottom of the support column continuously change with the movement. This is equivalent to repeatedly cleaning the same position from multiple directions, which greatly improves the thoroughness of the cleaning. Third, the protrusions can penetrate into the tiny pits, irregular grooves, or gaps in the connecting holes on the surface of the support column to remove hidden impurities, without causing debris to accumulate between the protrusions due to excessive density, thus ensuring the smoothness of the cleaning process.

[0048] During the cleaning process, debris (such as burr debris, plastic / metal dust, molding residue, etc.) will spread outward under the spiral thrust and gravity of the cleaning ridge 313. The retaining edge 3113 at the top of the collection base 3112, due to its inclined inner edge design, will guide the spread debris into the inside of the collection base 3112, preventing the debris from falling onto the precision parts of the clamp or re-attaching to the surface of the support column.

[0049] This integrated "cleaning-draining-collection" design completely solves the problem of debris residue in traditional cleaning methods.

[0050] At this point, the bottom of the support column has been cleaned to form a flat contact surface, and under the continuous positioning action of the auxiliary positioning component 32, its axis is highly coincident with the central axis of the static clamping seat 21. The flat bottom ensures that the contact surface between the support column and the bottom surface cleaning component 31 is completely in contact, avoiding uneven local stress caused by foreign objects. This is especially suitable for the characteristics of the new composite material that is sensitive to stress concentration. The precise alignment of the axis provides a basis for "pure axial force" in the subsequent tensile test, reducing the test data deviation caused by poor contact from the source and significantly improving the reliability of the test results.

[0051] Once the support column is in place, the movable clamp 22 moves vertically downwards until its jaws are aligned with the upper end of the support column.

[0052] Subsequently, the grippers of the static clamping seat 21 and the dynamic clamping seat 22 move simultaneously in a symmetrical direction to clamp the support column from both sides. This symmetrical clamping method can avoid the tilting of the support column caused by unilateral force and further ensure that the support column can withstand pure axial tension during the stretching process.

[0053] After the test is completed, the grippers of the moving clamp 22 and the stationary clamp 21 are released synchronously. The operator takes out the support column sample. At this time, the lifting shaft 312 is reset upward under the action of the reset elastic element 314. The linkage pin 3121 slides in the opposite direction along the guide groove 3111, which drives the cleaning ridge 313 to rotate in the opposite direction to complete the reset. The radial adjustment block 322 of the auxiliary positioning component 32 also re-converges under the pulling force of the clamping elastic component 323, returning to its initial state. The debris collected in the collection base 3112 can be periodically cleaned by the pre-set chip removal structure at the bottom, ensuring the continuous and stable operation of the device.

[0054] The entire process requires no additional power drive. It achieves automated coordination of "positioning-cleaning-clamping" solely through the linkage of mechanical structures and the pre-tightening force of elastic components. This effectively solves the problems of low accuracy of manual alignment, residual debris affecting test data, and cumbersome operation procedures in traditional devices. It significantly improves the efficiency and accuracy of tensile testing of support columns, and is especially suitable for the testing needs of new composite material support columns.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new material display screen processing testing device, comprising a test bench (1), wherein a static clamping seat (21) and a movable clamping seat (22) are installed on the test bench (1), the movable clamping seat (22) moves vertically, and the support column to be tested is clamped between the static clamping seat (21) and the movable clamping seat (22), characterized in that: The static clamping seat (21) is equipped with a bottom end face cleaning component (31) and an auxiliary positioning component (32). The bottom end face cleaning component (31) and the auxiliary positioning component (32) are both located at the center of the non-clamping area of ​​the static clamping seat (21). The auxiliary positioning component (32) is used to perform preliminary positioning of the support column to be tested. When the support column to be tested is placed on the bottom end face cleaning component (31), the bottom end face cleaning component (31) will move downward and rotate, thereby cleaning the lower surface of the support column.

2. The testing equipment for processing new material display screens according to claim 1, characterized in that: The auxiliary positioning component (32) is located above the bottom end cleaning component (31). The auxiliary positioning component (32) can enclose and form a variable inner diameter hole that is adapted to support columns of different diameters, so as to perform preliminary coaxial positioning of the support column to be tested.

3. The testing equipment for processing new material display screens according to claim 2, characterized in that: The top of the bottom end cleaning component (31) is located in the auxiliary positioning component (32), and the grippers of the static clamping seat (21) and the dynamic clamping seat (22) move symmetrically from left to right to clamp the support column to be tested from both sides.

4. The testing equipment for processing new material display screens according to claim 3, characterized in that: The bottom end cleaning assembly (31) includes a base (311) fixedly connected to the surface of the static clamp (21). The top of the base (311) extends upward and is slidably connected to a lifting shaft (312). A reset elastic element (314) is fixedly connected between the bottom of the lifting shaft (312) and the static clamp (21).

5. The testing equipment for processing new material display screens according to claim 4, characterized in that: The top of the lifting shaft (312) is fixedly connected with a cleaning ridge (313), which is a spiral continuous protrusion structure used to contact and clean the lower surface of the support column to be tested.

6. The testing equipment for processing new material display screens according to claim 5, characterized in that: The base (311) has a guide groove (3111) through it. The lifting shaft (312) is fixedly connected to a linkage pin (3121). The linkage pin (3121) slides with the guide groove (3111). The guide groove (3111) is a downward spiral groove to drive the lifting shaft (312) to rotate when it descends.

7. The testing equipment for processing new material display screens according to claim 6, characterized in that: The base (311) is fixedly connected to the surface of the base (311), the inner diameter of the collection seat (3112) is larger than that of the base (311), and the top of the collection seat (3112) is provided with a retaining edge (3113).

8. The testing equipment for processing new material display screens according to claim 7, characterized in that: The inner edge of the guard (3113) is inclined towards the inside of the collection seat (3112) to guide the debris after cleaning to gather into the collection seat (3112).

9. A testing device for processing new material display screens according to any one of claims 3-8, characterized in that: The auxiliary positioning component (32) includes a positioning ring seat (321) fixedly connected to the surface of the static clamping seat (21). Several radial adjustment blocks (322) are slidably fitted on the surface of the positioning ring seat (321). A clamping elastic element (323) is provided on the side of the several radial adjustment blocks (322) away from the center of the positioning ring seat (321).

10. The testing equipment for processing new material display screens according to claim 9, characterized in that: The radial adjustment block (322) has a short upper part and a long lower part arc-shaped structure on the side near the center of the positioning ring seat (321). The radial adjustment block (322) and the positioning ring seat (321) have gaps for the clamping elastic element (323) to be accommodated. The clamping elastic element (323) provides the radial adjustment block (322) with a circumferential tension force pointing towards the center of the positioning ring seat (321).

Images