Pressure maintaining jig and drawing force testing device

Abstract

This application provides a pressure-holding fixture and a pull-out force testing device. The pull-out force testing device includes a pull-out force testing mechanism and a pressure-holding fixture. The pressure-holding fixture includes an alignment structure and a pressure-holding mechanism. The alignment structure includes two alignment cavities spaced apart along a first direction and a receiving cavity located between and communicating with the two alignment cavities. The receiving cavity is used to receive the test piece. One alignment cavity is used to receive one pull-out piece and limit the pull-out piece so that two pull-out pieces received by the same alignment structure are aligned along the first direction. The pressure-holding mechanism is used to apply pressure to at least one pull-out piece so that the two pull-out pieces are pressed tightly against the test piece along the first direction. Before performing a pull-out force test on the test piece, this application first aligns the two pull-out pieces using the alignment structure and then uses the pressure-holding mechanism to maintain pressure between the pull-out pieces and the test piece, thereby improving the pressure-holding accuracy between the pull-out pieces and the test piece.

Description

Technical Field

[0001] This application belongs to the field of pull-out force testing technology, and more specifically, relates to a pressure-holding fixture and a pull-out force testing device. Background Technology

[0002] After the screen unit is manufactured, the bonding quality between the interfaces within the screen unit needs to be measured. Currently, a pull-out force testing machine is generally used to test the bonding strength between the interfaces of the screen unit, thereby determining the bonding quality between the interfaces.

[0003] However, current pull-out force testing mechanisms have poor accuracy in testing the bonding strength between the interfaces of individual screen units. Summary of the Invention

[0004] The purpose of this application is to provide a pressure-holding fixture and a pull-out force testing device to solve the technical problem of poor testing accuracy of pull-out force testing mechanisms in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a pressure-holding fixture is provided, including an alignment member and a pressure-holding mechanism. The alignment member includes at least one pair of alignment structures. The alignment structure includes two alignment cavities spaced apart along a first direction and a receiving cavity located between and communicating with the two alignment cavities. The receiving cavity is used to receive the test piece. Each alignment cavity is used to receive a pull member and limit the pull member so that two pull members received by the same alignment structure are aligned along the first direction. The pressure-holding mechanism is used to apply pressure to at least one pull member to maintain pressure between the pull member and the test piece.

[0006] In some embodiments, the alignment cavity has two first alignment walls spaced apart along the second direction. The two first alignment walls match two opposite surfaces of the puller along the second direction so that the two first alignment walls cooperate to limit the puller in the second direction. The second direction is perpendicular to the first direction.

[0007] Preferably, the spacing between the two first aligning walls along the second direction matches the width of the drawing member along the second direction.

[0008] In some embodiments, the alignment cavity further has a second alignment wall located between two first alignment walls along the second direction to limit the pull member in a third direction; the first direction, the second direction, and the third direction are mutually perpendicular.

[0009] Preferably, the second aligning wall and the two first aligning walls together form an alignment cavity.

[0010] In some embodiments, in the same alignment structure, one of the alignment cavities has a third alignment wall on the side away from the receiving cavity, the third alignment wall being used to limit the pull-out member in the first direction.

[0011] Preferably, in the same alignment structure, the other alignment cavity has an opening at the end away from the receiving cavity, and the pressure holding mechanism presses against one of the pulling members through the opening.

[0012] In some embodiments, the alignment cavity includes two first alignment walls spaced apart along a second direction, and an elastic limiting mechanism is provided on at least one of the two first alignment walls. The elastic limiting mechanism is configured to be elastically deformable along the second direction. The elastic limiting mechanism on one of the first alignment walls is used to press the pull member housed in the alignment cavity against the other first alignment wall or the elastic limiting mechanism on the other first alignment wall.

[0013] Preferably, one of the first alignment walls is provided with an elastic limiting mechanism;

[0014] Preferably, the two first alignment walls are provided with elastic limiting mechanisms, and the two elastic limiting mechanisms together press the pull-out member.

[0015] In some embodiments, the elastic limiting mechanism includes at least one elastic element, one end of which is fixedly connected to the first alignment wall and the other end is extended along the second direction.

[0016] Preferably, the elastic element is parallel to the second direction in its natural state;

[0017] Preferably, the elastic limiting mechanism includes a plurality of elastic elements, which are arranged at intervals along the first direction;

[0018] Preferably, the elastic limiting mechanism includes a plurality of elastic elements, which are arranged in a matrix along the first direction and the third direction;

[0019] Preferably, the elastic limiting mechanism further includes an abutment plate, with one end of the elastic element connected to the first alignment wall and the other end connected to the abutment plate.

[0020] In some embodiments, the alignment member includes a plurality of alignment structures, which are arranged such that they extend along the first direction and are spaced apart along the second direction;

[0021] Preferably, in the first direction, the plurality of alignment structures are flush;

[0022] Preferredly, in the second direction, the accommodating cavities of the plurality of alignment structures arranged sequentially are interconnected;

[0023] Preferably, the receiving cavities of the plurality of alignment structures on the same alignment member are interconnected;

[0024] Preferably, the alignment member is a plate-shaped member, and multiple alignment structures are formed on the same side surface of the plate-shaped member in the thickness direction.

[0025] In some embodiments, the output end of the pressure holding mechanism is provided with a pressure plate, the pressure plate extending along the second direction and connected to each of the drawing members spaced apart along the second direction;

[0026] Preferably, the bottom of the side of the alignment member with the opening extends into a support portion, which is used to support the pressure plate.

[0027] In some embodiments, the pressure-holding mechanism includes a driving member and a pushing member, wherein the driving member is used to drive the pushing member to move along the first direction to hold pressure on the drawing member;

[0028] Preferably, the pressure-holding mechanism further includes a mounting bracket and a connecting rod, the driving member is rotatably mounted on the mounting bracket, the first end of the driving member is hinged to the third end of the connecting rod, the fourth end of the connecting rod is hinged to the pushing member, and the pushing member is slidably mounted on the mounting bracket.

[0029] On the other hand, this application also provides a pull-out force testing device, including a pull-out force testing mechanism and the aforementioned pressure-holding fixture; the pressure-holding fixture is used to align two pull-out members and maintain pressure between the pull-out members and the test piece; the pull-out force testing mechanism is used to pull the two pull-out members in opposite directions to test the bonding strength of the test piece.

[0030] The beneficial effects of the pressure-holding fixture provided in this application are as follows: by setting at least one alignment structure and a pressure-holding mechanism, the alignment structure includes two alignment cavities and a receiving cavity. The receiving cavity is used to receive the test piece, and each alignment cavity is used to receive a pull-out piece and limit the pull-out piece so that the two pull-out pieces contained in the same alignment structure are aligned along a first direction. The pressure-holding mechanism is used to apply pressure to at least one pull-out piece so that the two pull-out pieces are pressed tightly against the test piece along the first direction. The above arrangement allows the two pull-out pieces to be aligned by the alignment structure before the pull-out force test is performed on the test piece, and the pressure is held between the pull-out piece and the test piece by the pressure-holding mechanism. It eliminates the need for manual alignment of the pull-out pieces in the pull-out force test mechanism, improves the alignment accuracy of the pull-out pieces, improves the pressure holding accuracy between the pull-out pieces and the test piece, and thus improves the pull-out force test accuracy of the test piece. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the pull-out force testing mechanism provided in the embodiments of this application;

[0033] Figure 2 A schematic diagram of the structure of the pressure-holding fixture provided in the embodiments of this application for aligning and holding pressure on the drawn part;

[0034] Figure 3 This is a schematic diagram of the pressure-holding fixture provided in the embodiments of this application;

[0035] Figure 4 This is a schematic diagram of the structure of a pressure-holding fixture provided in another embodiment of this application;

[0036] Figure 5 A schematic diagram of the structure of a pressure-holding fixture for aligning and holding pressure on a drawn part, provided in another embodiment of this application;

[0037] Figure 6 A schematic diagram of the structure of a pressure-holding fixture provided in another embodiment of this application;

[0038] Figure 7 This is a three-dimensional structural diagram of the drawing component;

[0039] Figure 8 This is a schematic diagram of the alignment member in the pressure-holding fixture provided in the embodiments of this application;

[0040] Figure 9 This is a schematic diagram of the structure of multiple alignment groups and pressure holding mechanism in the pressure holding fixture provided in the embodiments of this application;

[0041] Figure 10 This is a schematic diagram of the pressure-holding mechanism in the pressure-holding fixture provided in the embodiments of this application.

[0042] The following are the labeling elements in the figure:

[0043] 1. Pressure holding fixture; 100. Alignment component; 110. Alignment structure; 111. Receiving cavity; 112. Alignment cavity; 1121. First alignment wall; 1122. Second alignment wall; 1123. Mounting port; 1124. Third alignment wall; 1125. Opening; 120. Support part; 200. Pressure holding mechanism; 210. Driving component; 220. Pushing component; 230. Mounting bracket; 240. Connecting rod; 300. Pressure plate; 400. Elastic limiting mechanism; 410. Elastic component; 420. Abutment plate; 2. Pull-out force testing mechanism; 3. Pull-out component; 31. First side; 32. Second side; 33. Third side; 34. Fourth side; 35. Fifth side; 36. Sixth side; 4. Test piece; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0044] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0048] After the screen unit is manufactured, the bonding quality between its interfaces needs to be measured. This is typically done using a pull-out force testing mechanism to assess the bonding strength between the interfaces and determine the bonding quality. Specifically, two pull-out components of the same size are used. The screen unit is bonded between these components using adhesive. Then, two drive mechanisms push the two pull-out components in opposite directions, causing them to press against the screen unit. This maintains pressure between the pull-out components and the screen unit, ensuring that the bonding strength between them is greater than the bonding strength between the individual interfaces within the screen unit. Finally, the two drive mechanisms pull the two pull-out components in opposite directions until the screen unit separates, thus measuring the bonding strength between the interfaces within the screen unit.

[0049] However, during the testing process, it is necessary to ensure that the two pull-out parts are aligned with each other, which requires manual assistance to align the two pull-out parts vertically. Manual operation has a large error, which leads to low alignment accuracy of the two pull-out parts, ultimately resulting in the inability to accurately achieve pressure holding and thus affecting the test accuracy.

[0050] Based on this, the present application provides a pressure-holding fixture 1 and a pull-out force testing device. The pressure-holding fixture 1 first aligns the two pull-out parts 3, and then the pressure-holding mechanism 200 maintains pressure between the pull-out parts 3 and the screen unit, thereby achieving precise pressure holding and improving testing accuracy.

[0051] Please see Figures 1 to 3 This application provides a pull-out force testing device, which includes a pressure-holding fixture 1 and a pull-out force testing mechanism 2. The pressure-holding fixture 1 is used to align two pull-out members 3 and maintain pressure between the pull-out members 3 and the test piece 4 to ensure the bonding strength between them. The pull-out force testing mechanism 2 is used to pull the two pull-out members 3 in two opposite directions until the test piece 4 separates internally, thereby testing the bonding strength between the interfaces in the test piece 4.

[0052] Among them, the test piece 4 can be a single screen or other similar multi-layered structure.

[0053] Please see Figures 2 to 6 The pressure-holding fixture 1 provided in the embodiments of this application will now be described.

[0054] The pressure-holding fixture 1 includes an alignment member 100 and a pressure-holding mechanism 200. The alignment member 100 includes at least one alignment structure 110. The alignment structure 110 includes two alignment cavities 112 spaced apart along a first direction X and a receiving cavity 111 located between and communicating with the two alignment cavities 112. The receiving cavity 111 is used to receive the test piece 4. Each alignment cavity 112 is used to receive a pull member 3 and limit the pull member 3 so that the two pull members 3 contained in the same alignment structure 110 are aligned along the first direction X. The pressure-holding mechanism 200 is used to apply pressure to at least one pull member 3 so that the two pull members 3 are pressed together with the test piece 4 along the first direction X.

[0055] Each alignment cavity 112 is used to accommodate one pull member 3 and to limit the pull member 3 so that two pull members 3 housed in the same alignment structure 110 are aligned along the first direction X. This means that the alignment cavity 112 limits the position of the pull member 3 so that the two pull members 3 are aligned along the first direction X. Alignment of the two pull members 3 can be achieved by aligning one or more surfaces of one pull member 3 with one or more surfaces of the other pull member 3.

[0056] The pressure-holding mechanism 200 can apply a force along the first direction X to one of the drawing members 3, causing the drawing member 3 to move closer to the other drawing member 3, so that the two drawing members 3 clamp the test piece 4 in the middle, thereby achieving pressure holding between the drawing member 3 and the test piece 4. Alternatively, the pressure-holding mechanism 200 can apply opposing forces to the two drawing members 3 respectively, causing the two drawing members 3 to move towards each other, so that the two drawing members 3 clamp the test piece 4 in the middle, thereby achieving pressure holding between the drawing member 3 and the test piece 4.

[0057] Before using the pressure-holding fixture 1, the test piece 4 is placed between the two pullers 3, and adhesive is applied between the pullers 3 and the test piece 4. For ease of description, the two pullers 3 and the test piece 4 in the middle are collectively referred to as the puller assembly. Next, the puller assembly is installed into the alignment structure 110. Specifically, the two pullers 3 are respectively housed in the two alignment cavities 112, and the test piece 4 is placed in the receiving cavity 111. Since the alignment cavity 112 has an alignment function for the pullers 3, the two pullers 3 are aligned after being placed in the two alignment cavities 112. Finally, the pressure-holding mechanism 200 applies pressure to at least one puller 3 to hold pressure between the puller 3 and the test piece 4.

[0058] The pressure-holding fixture 1 in this embodiment of the application comprises at least one alignment structure 110 and a pressure-holding mechanism 200. The alignment structure 110 includes two alignment cavities 112 and a receiving cavity 111. The receiving cavity 111 is used to receive the test piece 4. Each alignment cavity 112 is used to receive a pull piece 3 and limit the pull piece 3 so that the two pull pieces 3 contained in the same alignment structure 110 are aligned along the first direction X. The pressure-holding mechanism 200 is used to apply pressure to at least one pull piece 3 so that the two pull pieces 3 are aligned. The pull-out force tester 4 is pressed together along the first direction X. This configuration allows the two pull-out parts 3 to be aligned by the alignment structure 110 before the pull-out force test is performed on the pull-out force tester 4. The pressure holding mechanism 200 holds the pressure between the pull-out parts 3 and the pull-out parts 4. This eliminates the need for manual alignment of the pull-out parts 3 in the pull-out force tester 2, improves the alignment accuracy of the pull-out parts 3, improves the pressure holding accuracy between the pull-out parts 3 and the pull-out parts 4, and thus improves the accuracy of the pull-out force test on the pull-out parts 4.

[0059] Optionally, please refer to Figure 7 The drawing member 3 has a rectangular cross-section perpendicular to the first direction X. It has a first side 31 and a second side 32 facing away from each other along the second direction Y. It also has a third side 33 and a fourth side 34 facing away from each other along the third direction Z. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. The alignment of the two drawing members 3 is completed when the first side 31 and / or the second side 32 and / or the third side 33 and / or the fourth side 34 are aligned. It is understood that in other embodiments of this application, the cross-section of the drawing member 3 perpendicular to the first direction X may also be circular or other regular polygons. In this case, the second direction Y and the third direction Z may not be perpendicular to each other; this is not a unique limitation.

[0060] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 6 The alignment cavity 112 has two first alignment walls 1121 spaced apart along the second direction Y. The two first alignment walls 1121 match the two opposite surfaces of the pulling member 3 along the second direction Y so that the two first alignment walls 1121 cooperate to limit the pulling member 3 in the second direction Y. The second direction Y is perpendicular to the first direction X. Specifically, the two first alignment walls 1121 cooperate to limit the pulling member 3 in the second direction Y, thereby achieving the alignment of the first side surface 31 and the second side surface 32 of the two pulling members 3 through the two alignment cavities 112.

[0061] Preferably, the spacing between the two first alignment walls 1121 along the second direction Y matches the width of the drawing member 3 along the second direction Y, so that the two first alignment walls 1121 cooperate to limit the drawing member 3 in the second direction Y. That is, the two first alignment walls 1121 respectively abut against the first side 31 and the second side 32 of the drawing member 3 along the second direction Y to achieve the alignment of the first side 31 and the second side 32 of the two drawing members 3.

[0062] In some embodiments, please refer to Figure 4 , Figure 6 and Figure 8 The alignment cavity 112 also has a second alignment wall 1122, which is located between the two first alignment walls 1121 along the second direction Y to limit the pull member 3 in the third direction Z. Specifically, the second alignment wall 1122 is used to abut against the third side 33 of the pull member 3 to achieve alignment of the two pull members 3 along the third direction Z, so that the two pull members 3 are completely aligned along the second direction Y and the third direction Z, thereby ensuring the pressure holding accuracy between the pull member 3 and the test piece 4.

[0063] Preferably, the second alignment wall 1122 is the bottom surface of the alignment cavity 112, so that the third side surface 33 of the puller 3 can abut against the second alignment wall 1122 under the action of gravity, thereby realizing the alignment of the puller 3 along the third direction Z.

[0064] Preferably, the second alignment wall 1122 and the two first alignment walls 1121 together form an alignment cavity 112. Specifically, the alignment member 100 is provided with two sets of alignment walls corresponding to the two alignment cavities 112, and the receiving cavity 111 is located between the two sets of alignment walls. Each set of alignment walls includes two first alignment walls 1121 and one second alignment wall 1122.

[0065] In some embodiments, please refer to Figure 4 The alignment cavity 112 also has an installation port 1123, which is opposite to the second alignment wall 1122. During alignment and pressure holding, the puller 3 is inserted into the alignment cavity 112 through the installation port 1123, so that the third side 33 of the puller 3 is supported by the second alignment wall 1122, so that the first side 31 of the puller 3 abuts against the first alignment wall 1121, and the second side 32 of the puller 3 abuts against the first alignment wall 132. Thus, the two pullers 3 can be aligned along the second direction Y and the third direction Z by the two first alignment walls 1121 and the second alignment wall 1122.

[0066] In some embodiments, please refer to Figures 2 to 4The alignment cavity 112 includes two first alignment walls 1121 spaced apart along the second direction Y. At least one of the two first alignment walls 1121 is provided with an elastic limiting mechanism 400. The elastic limiting mechanism 400 is configured to elastically deform along the second direction Y. The elastic limiting mechanism 400 on one of the first alignment walls 1121 is used to press the pull-out member 3 housed in the alignment cavity 112 against the other first alignment wall 1121 or the elastic limiting mechanism 400 on the other first alignment wall 1121. The provision of the elastic limiting mechanism 400 allows the pressure-holding fixture 1 to not only abut and limit the pull-out member 3, but also to be applicable to pull-out members 3 with different dimensions along the second direction Y, thus broadening the applicability of the pressure-holding fixture 1.

[0067] In some embodiments of this application, please refer to Figure 2 and Figure 3 One of the first alignment walls 1121 is provided with an elastic limiting mechanism 400, and the elastic limiting mechanism 400 on one of the first alignment walls 1121 is used to press the pull member 3 housed in the alignment cavity 112 onto the other first alignment wall 1121.

[0068] In some other embodiments of this application, elastic limiting mechanisms 400 may be provided on both first alignment walls 1121, and the two elastic limiting mechanisms 400 may be used to press the pull-out member 3 together.

[0069] In some embodiments, please refer to Figure 3 and Figure 4 The elastic limiting mechanism 400 includes at least one elastic element 410, one end of which is fixedly connected to the first alignment wall 1121, and the other end extends along the second direction Y. When the puller 3 is inserted into the alignment cavity 112, one side of the puller 3 along the second direction Y abuts against one of the first alignment walls 1121, and the other side of the puller 3 along the second direction Y elastically abuts against the end of the elastic element 410 opposite to the other first alignment wall 1121. The extension and retraction of the elastic element 410 along the second direction Y ensures that the puller 3 abuts against the opposite first alignment wall 1121, and can accommodate pullers 3 of different widths.

[0070] Preferably, the elastic member 410 is parallel to the second direction Y in its natural state, that is, the elastic member 410 can extend and retract along the second direction Y to exert an elastic force along the second direction Y on the pulling member 3, so as to ensure that the pulling member 3 is perpendicularly abutted against the first alignment wall 1121 on the opposite side.

[0071] In some embodiments, the elastic limiting mechanism 400 includes a plurality of elastic elements 410, which are arranged at intervals along a first direction X. The arrangement of the plurality of elastic elements 410 ensures that the elastic pushing force of the elastic limiting mechanism 400 on the same side of the pulling member 3 is evenly distributed along the first direction X, thus ensuring the smooth contact of the elastic limiting mechanism 400 with the pulling member 3.

[0072] In some embodiments, the elastic limiting mechanism 400 includes a plurality of elastic elements 410, which are arranged in a matrix along the first direction X and the second direction Y. This arrangement ensures that the elastic pushing force of the elastic limiting mechanism 400 on the same side of the pulling member 3 is evenly distributed along the first direction X and the third direction Z, further ensuring the smooth contact of the elastic limiting mechanism 400 with the pulling member 3.

[0073] In some embodiments, the elastic limiting mechanism 400 further includes an abutment plate 420. One end of the elastic member 410 is connected to the first alignment wall 1121, and the other end is connected to the abutment plate 420. That is, the elastic member 410 does not directly abut against the pulling member 3, but abuts against the pulling member 3 through the abutment plate 420, thereby increasing the contact area between the pulling member 3 and the abutment plate 420 and improving the limiting stability of the pulling member 3 by the abutment plate 420.

[0074] Optionally, in an embodiment with an abutment plate 420, the pressure-holding fixture 1 includes two elastic members 410 and an abutment plate 420. The two elastic members 410 are spaced apart along a first direction X. One side of the abutment plate 420 abuts against the two elastic members 410 respectively, and the other side of the abutment plate 420 abuts against the second side 32 of the puller 3. Under the action of the elastic members 410, the puller 3 is pushed so that the first side 31 of the puller 3 abuts against the first alignment wall 1121 on the opposite side. It is understood that in other embodiments of this application, the abutment plate 420 and the elastic members 410 may also be provided on the first side 31 of the puller 3; or, two abutment plates 420 may be provided, and at least one elastic member 410 may be provided on the side of the two abutment plates 420 away from the alignment cavity 112 respectively. This is not a unique limitation.

[0075] In some embodiments, the alignment member 100 includes a plurality of alignment structures 110, which are arranged in a manner extending along a first direction X and spaced apart along a second direction Y. During testing, multiple sets of pull-out assemblies can be respectively installed into the plurality of alignment structures 110. By aligning the multiple sets of pull-out assemblies with the alignment structures 110, the alignment member 100 can be used to maintain the alignment and pressure of the multiple sets of pull-out assemblies, thereby improving the pressure holding efficiency of the pull-out assemblies.

[0076] Preferably, in the first direction X, the multiple alignment structures 110 are flush. In this way, multiple sets of drawing assemblies can be respectively installed into the receiving cavities 111 and alignment cavities 112 of the multiple alignment structures 110 by mechanical equipment, which improves assembly efficiency and also makes the structure of the alignment structures 110 neat and easy to process; in addition, the aligned arrangement of each set of drawing assemblies can also be used to maintain pressure on multiple sets of drawing assemblies by the same pressure holding mechanism 200, which improves pressure holding efficiency.

[0077] Priority is given to the fact that the cavities 111 of the multiple alignment structures 110 arranged sequentially in the second direction Y are interconnected. This arrangement facilitates the loading of the test piece 2 into the cavity 111 and also allows each cavity 111 to be formed in one operation, reducing the processing difficulty of the alignment piece 100.

[0078] Preferably, the receiving cavities 111 of the multiple alignment structures 110 on the same alignment member 100 are interconnected, so that each receiving cavity 111 can be formed in one step, reducing the processing difficulty of the alignment member 100.

[0079] Preferably, the alignment member 100 is a plate-shaped member, and multiple sets of alignment structures 110 are formed on the same side surface in the thickness direction of the plate-shaped member. Specifically, the top side surface of the alignment member 100 is recessed to form each alignment cavity 112 and receiving cavity 111.

[0080] In some embodiments, please refer to Figure 4 In the same alignment structure 110, a third alignment wall 1124 is provided on the side of one of the alignment cavities 112 away from the receiving cavity 111. The third alignment wall 1124 is used to limit the pulling member 3 in the first direction X. Specifically, the third alignment wall 1124 and the pressure holding mechanism 200 are spaced apart along the first direction X, and the third alignment wall 1124 and the pressure holding mechanism 200 are used to abut against the opposite ends of the two pulling members 3 respectively. By providing the third alignment wall 1124, the pressure holding mechanism 200 only needs to apply pressure to one of the pulling members 3, without applying pressure to both pulling members 3, thus simplifying the pressure holding mechanism 200. It can be understood that in other embodiments of this application, the third alignment wall 1124 may not be provided, and the pressure holding mechanism 200 may apply opposing pressures to the two pulling members 3 respectively, so that the two pulling members 3 abut against each other. This is not the only limitation.

[0081] In some embodiments, please refer to Figure 7 The pull member 3 has a fifth side 35 and a sixth side 36 arranged opposite to each other along the first direction X. The fifth side 35 of one of the pull members 3 abuts against the third alignment wall 1124. The pressure holding mechanism 200 applies pressure to the sixth side 36 of the other pull member 3 so that the two pull members 3 press the test piece 4 towards each other along the first direction X.

[0082] Preferably, in the same alignment structure 110, the other alignment cavity 112 has an opening 1125 at the end away from the receiving cavity 111, and the pressure holding mechanism 200 presses against one of the pull-out members 3 through the opening 1125.

[0083] For some specific embodiments, please refer to Figure 9 The output end of the pressure holding mechanism 200 is provided with a pressure plate 300, which extends along the second direction Y and is connected to each of the drawing members 3 distributed at intervals along the second direction Y. During pressure holding, multiple sets of drawing assemblies can be installed one-to-one into each alignment group 140, and the pressure holding mechanism 200 drives the pressure plate 300 so that the pressure plate 300 abuts against the drawing member 3 closest to the pressure plate 300 in each set of drawing assemblies. Thus, the pressure holding mechanism 200 can simultaneously hold pressure on multiple sets of drawing assemblies.

[0084] In some embodiments, please refer to Figure 8 The alignment member 100 has a support portion 120 on one side with an opening 1125. The support portion 120 is used to support the pressure plate 300 so that the pressure plate 300 can slide smoothly to continuously and stably drive each pulling member 3. Alternatively, the support portion 120 can also support the output end of the pressure holding mechanism 200, which is not the only limitation here.

[0085] In some embodiments, please refer to Figure 10 The pressure-holding mechanism 200 includes a driving member 210 and a pushing member 220. The driving member 210 is used to drive the pushing member 220 to move along the first direction X to hold pressure on the drawing member 3. The driving member 210 can output linear motion or rotational motion to drive the pushing member 220 to move along the first direction X to press against the drawing member 3.

[0086] Optionally, the pressure holding mechanism 200 includes a mounting frame 230 and a connecting rod 240. The driving member 210 is rotatably mounted on the mounting frame 230. The first end of the driving member 210 is hinged to the third end of the connecting rod 240, and the fourth end of the connecting rod 240 is hinged to the pushing member 220. The pushing member 220 is slidably mounted on the mounting frame 230. When the driving member 210 is pushed to rotate along the first end by the second end of the driving member 210, the driving member 210 can drive the pushing member 220 to move along the first direction X through the connecting rod 240.

[0087] Optionally, the pressure-holding mechanism 200 includes an elbow clamping mechanism. This elbow clamping mechanism is based on the double-rocker principle of a planar four-bar linkage, achieving self-locking through the geometric relationship between the driving member 210 and the connecting rod 240. When the mechanism moves to its dead-point position (the driving member 210 and the connecting rod 240 are collinear), a small input force can generate a large output force. At this point, the mechanism cannot move in the opposite direction, forming a stable clamping force. Force transmission and amplification utilize an elbow-joint swing structure. Through the geometric amplification effect of the multi-link, the input force of operating the driving member 210 is converted into a clamping force, making it particularly suitable for scenarios requiring high clamping force. It is understood that in other embodiments of this application, the pressure-holding mechanism 200 may also include a hydraulic drive mechanism, a pneumatic drive mechanism, a mechanical clamping mechanism, or a counterweight-type pressure-holding mechanism, etc., and is not limited to any single type. Furthermore, the pressure value can be freely controlled by adjusting the elbow clamp connecting rod 240.

[0088] In other embodiments of this application, the drawing member 3 can also be limited by diagonal abutment limiting. For example, a limiting member can be provided at each of the two diagonal positions of the drawing member 3. The limiting member has two alignment walls that form an angle with each other, and the four alignment walls of the two limiting members abut against the four sides of the drawing member 3 to achieve alignment of the drawing member 3. Similarly, one of the limiting members can be connected to the elastic member 410, and the elastic member 410 can drive one of the limiting members to extend and retract to accommodate drawing members 3 of different sizes.

[0089] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure-holding fixture (1), characterized in that, The pressure-holding fixture (1) includes an alignment member (100) and a pressure-holding mechanism (200). The alignment member (100) includes at least one alignment structure (110). The alignment structure (110) includes two alignment cavities (112) spaced apart along a first direction (X) and a receiving cavity (111) located between and communicating with the two alignment cavities (112). The receiving cavity (111) is used to receive the test piece (4). Each alignment cavity (112) is used to receive a pull piece (3) and limit the pull piece (3) so that the two pull pieces (3) received by the same alignment structure (110) are aligned along the first direction (X). The pressure holding mechanism (200) is used to apply pressure to at least one of the pull members (3) so that the two pull members (3) are pressed against the test piece (4) along the first direction (X).

2. The pressure-holding fixture (1) as described in claim 1, characterized in that, The alignment cavity (112) has two first alignment walls (1121) spaced apart along the second direction (Y). The two first alignment walls (1121) match the two surfaces of the puller (3) opposite each other along the second direction (Y) so that the two first alignment walls (1121) cooperate to limit the puller (3) in the second direction (Y). The second direction (Y) is perpendicular to the first direction (X).

3. The pressure-holding fixture (1) as described in claim 2, characterized in that, The spacing between the two first alignment walls (1121) along the second direction (Y) matches the width of the puller (3) along the second direction (Y).

4. The pressure-holding fixture (1) as described in claim 2, characterized in that, The alignment cavity (112) also has a second alignment wall (1122), which is located between the two first alignment walls (1121) along the second direction (Y) to limit the puller (3) in the third direction (Z); the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

5. The pressure-holding fixture (1) as described in claim 4, characterized in that, The second aligning wall (1122) and the two first aligning walls (1121) together form an alignment cavity (112).

6. The pressure-holding fixture (1) as described in claim 1, characterized in that, In the same alignment structure (110), one of the alignment cavities (112) is provided with a third alignment wall (1124) on the side away from the receiving cavity (111), the third alignment wall (1124) being used to limit the puller (3) in the first direction (X).

7. The pressure-holding fixture (1) as described in claim 1, characterized in that, In the same alignment structure (110), one of the alignment cavities (112) has an opening (1125) at one end away from the receiving cavity (111), and the pressure holding mechanism (200) presses against one of the pullers (3) through the opening (1125).

8. The pressure-holding fixture (1) as described in any one of claims 1 to 7, characterized in that, The alignment cavity (112) includes two first alignment walls (1121) spaced apart along a second direction (Y). At least one of the two first alignment walls (1121) is provided with an elastic limiting mechanism (400). The elastic limiting mechanism (400) is configured to be elastically deformable along the second direction (Y). The elastic limiting mechanism (400) on one of the first alignment walls (1121) is used to press the pull member (3) housed in the alignment cavity (112) against the elastic limiting mechanism (400) on the other first alignment wall (1121).

9. The pressure-holding fixture (1) as described in claim 8, characterized in that, One of the first alignment walls (1121) is provided with an elastic limiting mechanism (400).

10. The pressure-holding fixture (1) as described in claim 8, characterized in that, Two first alignment walls (1121) are provided with elastic limiting mechanisms (400), and the two elastic limiting mechanisms (400) together press the puller (3).

11. The pressure-holding fixture (1) as described in claim 8, characterized in that, The elastic limiting mechanism (400) includes at least one elastic element (410), one end of which is fixedly connected to the first alignment wall (1121), and the other end extends along the second direction (Y).

12. The pressure-holding fixture (1) as described in claim 11, characterized in that, The elastic element (410) is parallel to the second direction (Y) in its natural state.

13. The pressure-holding fixture (1) as described in claim 8, characterized in that, The elastic limiting mechanism (400) includes a plurality of elastic elements (410), which are arranged at intervals along the first direction (X).

14. The pressure-holding fixture (1) as described in claim 8, characterized in that, The elastic limiting mechanism (400) includes a plurality of elastic elements (410), which are arranged in a matrix along the first direction (X) and the third direction (Z).

15. The pressure-holding fixture (1) as described in claim 11, characterized in that, The elastic limiting mechanism (400) further includes an abutment plate (420), one end of the elastic element (410) is connected to the first alignment wall (1121), and the other end is connected to the abutment plate (420).

16. The pressure-holding fixture (1) as described in any one of claims 1 to 7, characterized in that, The alignment member (100) includes a plurality of alignment structures (110), which are arranged in a manner that extends along the first direction (X) and is spaced apart along the second direction (Y).

17. The pressure-holding fixture (1) as described in claim 16, characterized in that, In the first direction (X), the plurality of alignment structures (110) are flush.

18. The pressure-holding fixture (1) as described in claim 16, characterized in that, In the second direction (Y), the cavities (111) of the plurality of alignment structures (110) arranged in sequence are interconnected.

19. The pressure-holding fixture (1) as described in claim 16, characterized in that, The receiving cavities (111) of the plurality of alignment structures (110) on the same alignment member (100) are interconnected.

20. The pressure-holding fixture (1) as described in claim 16, characterized in that, The alignment member (100) is a plate-shaped member, and multiple sets of the alignment structures (110) are formed on the same side surface of the plate-shaped member in the thickness direction.

21. The pressure-holding fixture (1) as described in claim 16, characterized in that, The output end of the pressure holding mechanism (200) is provided with a pressure plate (300), which extends along the second direction (Y) and is connected to each of the drawing members (3) that are spaced apart along the second direction (Y).

22. The pressure-holding fixture (1) as described in claim 21, characterized in that, The alignment member (100) has a support portion (114) extending from the bottom of the side with an opening, the support portion (114) being used to support the pressure plate (300).

23. The pressure-holding fixture (1) as described in any one of claims 1 to 7, characterized in that, The pressure holding mechanism (200) includes a drive member (210) and a pusher member (220). The drive member (210) is used to drive the pusher member (220) to move along the first direction (X) to hold pressure on the puller member (3).

24. The pressure-holding fixture (1) as described in claim 23, characterized in that, The pressure holding mechanism (200) further includes a mounting bracket (230) and a connecting rod (240). The driving member (210) is rotatably mounted on the mounting bracket (230). The first end of the driving member (210) is hinged to the third end of the connecting rod (240), and the fourth end of the connecting rod (240) is hinged to the pushing member (220). The pushing member (220) is slidably mounted on the mounting bracket (230).

25. A pull-out force testing device, characterized in that, The device includes a pull-out force testing mechanism (2) and a pressure-holding fixture (1) as described in any one of claims 1 to 24; the pressure-holding fixture (1) is used to align two pull-out members (3) and maintain pressure between the pull-out members (3) and the test piece (4); the pull-out force testing mechanism (2) is used to pull the two pull-out members (3) in opposite directions to test the bonding strength of the test piece (4).

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