A film material tensile test chuck mechanism

Abstract

The utility model relates to thin film material tensile test technical field provides a kind of thin film material tensile test chuck mechanism, comprising: fixed base and compacting mechanism;The fixed base lower end is fixedly connected with fixed compacting block, the fixed base upper end is equipped with installation cavity, the fixed base is slidably connected with movable compacting block by installation cavity, the installation cavity is equipped with compacting mechanism and movable compacting block transmission connection;Movable compacting block and fixed compacting block end face are all movably provided with the detachable steel sheet of slidable installation.The utility model, setting up the detachable steel sheet of installable dismounting, so that the device can simultaneously adapt to directly compacting and bonding process compacting two compacting modes, can adapt to different film types, under the compacting force in compacting process is detachable steel sheet, will not directly contact film, can corresponding stress dispersion, so that load distribution is uniform, prevent the film edge tear, crush, pre-damage problem caused by excessive pressure.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology for thin film materials, and in particular to a clamping mechanism for tensile testing of thin film materials. Background Technology

[0002] Thin film materials (such as polymer films, metal foils, composite films, and functional coated films) are widely used in packaging, electronics, medical, and new energy fields due to their unique physicochemical properties. Accurately obtaining the tensile properties of films (such as elastic modulus, yield strength, elongation at break, and tensile strength) is crucial for material research and development, quality control, and product design. Tensile testing is the primary method for evaluating these properties.

[0003] Currently, thin film tensile testing mainly employs traditional clamping devices such as wedge clamps and toothed clamps. These clamps fix the thin film specimen through mechanical compression, providing the necessary clamping force during the tensile process. However, for special thin film materials with smooth surfaces, insufficient clamping force can lead to insufficient friction between the specimen and the clamp to meet the tensile requirements, resulting in relative slippage. Conversely, excessive clamping force can cause irreversible flattening deformation of the film in the thickness direction, distorting the original mechanical properties of the material. Furthermore, traditional clamps are prone to generating localized high pressure during clamping, creating highly concentrated stress distributions at the film edges, causing premature crack initiation near the clamping area, which negatively impacts the accuracy and reliability of the test results. Utility Model Content

[0004] The purpose of this invention is to address the problems in existing technologies where, for special thin film materials with smooth surfaces, insufficient clamping force applied by the clamping fixture can lead to insufficient friction between the sample and the fixture to meet tensile requirements, resulting in relative slippage. On the other hand, excessive clamping force can cause irreversible flattening deformation of the film in the thickness direction, distorting the original mechanical properties of the material. Furthermore, traditional clamping fixtures are prone to generating localized high pressure during clamping, resulting in highly concentrated stress distribution at the edge of the film, causing premature cracking of the sample near the clamping area, which affects the accuracy and reliability of the test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a clamping mechanism for tensile testing of thin film materials, comprising: a fixed base and a clamping mechanism; a fixed clamping block is fixedly connected to the lower end of the fixed base, and an installation cavity is provided at the upper end of the fixed base; a movable clamping block is slidably connected to the fixed base through the installation cavity; and a clamping mechanism is provided in the installation cavity and is drivenly connected to the movable clamping block.

[0006] Both the movable clamping block and the fixed clamping block have detachable steel plates that can be slidably installed at their end faces, and the two detachable steel plates are parallel and corresponding to each other.

[0007] Depending on the type of film material, it may be necessary to remove the detachable steel sheets for clamping. The clamping mechanism can drive the movable clamping block to move towards the fixed clamping block, so that the end faces of the two detachable steel sheets jointly clamp the film sample.

[0008] In a preferred embodiment, each of the two detachable steel sheets is fixedly connected to a fixing block at one end away from each other. Each fixing block has threaded holes at both ends. The fixing clamping block and the detachable steel sheet are each provided with a slot at one end close to each other. The slot is matched in size to the fixing block and has through holes at both ends. The movable clamping block and the fixed clamping block are each provided with fixing bolts at the corresponding positions of the fixing blocks, which are threadedly connected to the fixing blocks. By setting the fixing bolts, the fixing blocks can be pressed and locked, thereby achieving the function of fixing the detachable steel sheets.

[0009] In a preferred embodiment, the clamping mechanism includes a threaded rod rotatably connected to the mounting cavity, a connecting block fixedly connected to the rear end of the movable clamping block, the connecting block being slidably connected to the mounting cavity, and the threaded rod being threadedly connected to the connecting block, so that the connecting block can be driven to make vertical linear movement by the rotation of the threaded rod.

[0010] In a preferred embodiment, both ends of the connecting block are fixedly connected to limit sliders, and both ends of the mounting cavity are provided with limit grooves. The limit sliders are slidably connected inside the limit grooves corresponding to their respective positions. By setting the limit sliders in conjunction with the limit grooves, the movement of the connecting block is limited and guided, making the movement of the connecting block more stable.

[0011] In a preferred embodiment, a handle is fixedly connected to the top of the threaded rod, forming a lever that allows the user to easily adjust the height of the connecting block by rotating the threaded rod.

[0012] In a preferred embodiment, guide sleeves are fixedly connected to both ends of the fixed base. The guide sleeves have through holes to facilitate the connection of the device with a push rod or lead screw and other tensioning tools when there is a lack of guidance. The reserved guide sleeves are convenient for use in conjunction with the subsequent installation of guide rods.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] Removable steel plates are installed and removed on the clamping ends of the movable and fixed clamping blocks, allowing the device to adapt to both direct clamping and adhesive clamping modes. During clamping, the detachable steel plates bear the clamping force and do not directly contact the film, thus dispersing stress and ensuring uniform load distribution. This prevents excessive pressure from causing film edge tearing, crushing, or pre-damage. When dealing with relatively smooth films, it can be used in conjunction with adhesive processes to prevent slippage. The detachable steel plates can be removed, and adhesive can be applied and pasted outside the clamps. The ample space allows for precise control of adhesive amount, position, and film alignment, making the adhesive process simpler and more accurate. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of a film material tensile testing clamp mechanism provided by this utility model;

[0016] Figure 2 A three-dimensional structural schematic diagram of a film material tensile testing clamp mechanism provided by this utility model;

[0017] Figure 3 A partial cross-sectional view of a clamping mechanism for tensile testing of thin film materials provided by this utility model;

[0018] Figure 4 This is a partial cross-sectional view of a clamping mechanism for tensile testing of thin film materials provided by this utility model.

[0019] Legend:

[0020] 1. Fixed base; 2. Movable clamping block; 3. Fixed clamping block; 4. Removable steel plate; 5. Guide sleeve; 6. Rotary handle; 7. Slot; 8. Fixing bolt; 9. Fixing block; 10. Threaded rod; 11. Connecting block; 12. Limiting slider; 13. Limiting groove; 14. Mounting cavity. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a clamping mechanism for tensile testing of thin film materials, including: a fixed base 1 and a clamping mechanism; a fixed clamping block 3 is fixedly connected to the lower end of the fixed base 1, and an installation cavity 14 is provided at the upper end of the fixed base 1. A movable clamping block 2 is slidably connected to the fixed base 1 through the installation cavity 14, and a clamping mechanism is provided in the installation cavity 14 and is connected to the movable clamping block 2 in a transmission manner.

[0023] Both the movable clamping block 2 and the fixed clamping block 3 have detachable steel plates 4 that can be slidably installed at their end faces, and the two detachable steel plates 4 are parallel and corresponding to each other; the detachable steel plates 4 are rectangular thin sheets, and their size should match the size of the film to be tested.

[0024] Depending on the type of film material, it is possible to remove the detachable steel sheet 4 for pressing. The pressing mechanism can drive the movable pressing block 2 to move toward the fixed pressing block 3, so that the end faces of the two detachable steel sheets 4 press the film sample together.

[0025] By setting a detachable steel plate 4, the device can be used for two purposes, forming two usage modes;

[0026] Mode 1 (Conventional Flat Clamping): After the detachable steel sheet 4 is installed in place, it together with the movable clamping block 2 or the fixed clamping block 3 to form a complete flat clamping jaw. It is suitable for films with a certain strength, that are not easy to slip, or that are sensitive to adhesives or that are not allowed to be used.

[0027] Mode 2 (Adhesion Enhancement Mode): By disassembling the detachable steel sheet 4, adhesive can be applied independently to the surface of the detachable steel sheet 4, and then the film end can be accurately pasted. The detachable steel sheet 4 with the film pasted can then be put back into the movable clamping block 2 or the fixed clamping block 3 of the clamp. This solves the difficulties and inaccuracies of applying adhesive directly into the clamp and aligning the film when using the pasting process for film clamping.

[0028] Removable steel plates 4 are installed and removed from the clamping end faces of the movable clamping block 2 and the fixed clamping block 3, allowing the device to adapt to both direct clamping and adhesive clamping modes. During the clamping process, the detachable steel plate 4 is subjected to the clamping force and does not directly contact the film, thus dispersing the stress and ensuring uniform load distribution. This prevents excessive pressure from causing film edge tearing, crushing, or pre-damage. When dealing with relatively smooth films, it can be used in conjunction with adhesive processes to prevent slippage. The detachable steel plate 4 can be removed, and adhesive can be applied and pasted outside the clamp. The open space allows for precise control of the amount and position of adhesive and alignment of the film, making the adhesive process simpler and more precise.

[0029] like Figure 1-4As shown, two detachable steel plates 4 are fixedly connected to a fixing block 9 at one end away from each other. The fixing block 9 has threaded holes at both ends. The fixing clamping block 3 and the detachable steel plate 4 are both provided with a slot 7 at one end close to each other. The slot 7 matches the size of the fixing block 9. The slot 7 has through holes at both ends. The movable clamping block 2 and the fixed clamping block 3 are provided with fixing bolts 8 corresponding to the fixing block 9 and are threadedly connected to the fixing block 9. By setting the fixing bolts 8, the fixing block 9 can be pressed and locked, thereby realizing the function of fixing the detachable steel plate 4.

[0030] like Figure 1-4 As shown, the clamping mechanism includes a threaded rod 10 rotatably connected in the mounting cavity 14, and a connecting block 11 fixedly connected to the rear end of the movable clamping block 2. The connecting block 11 is slidably connected in the mounting cavity 14. The threaded rod 10 is threadedly connected to the connecting block 11, and the connecting block 11 can be driven to make vertical linear movement by the rotation of the threaded rod 10.

[0031] like Figure 1-4 As shown, both ends of the connecting block 11 are fixedly connected to limit sliders 12, and both ends of the mounting cavity 14 are provided with limit grooves 13. The limit sliders 12 are slidably connected inside the limit grooves 13 in their corresponding positions. By setting the limit sliders 12 in conjunction with the limit grooves 13, the movement of the connecting block 11 is limited and guided, making the movement of the connecting block 11 more stable.

[0032] like Figure 1-4 As shown, a handle 6 is fixedly connected to the top of the threaded rod 10. The handle 6 forms a lever that saves effort, making it easy for the user to rotate the threaded rod 10 to adjust the height of the connecting block 11.

[0033] like Figure 1-4 As shown, guide sleeves 5 are fixedly connected to both ends of the fixed base 1. The guide sleeves 5 have through holes, which facilitates the connection of the device with a push rod or lead screw and other tensioning tools when there is a lack of guidance. The reserved guide sleeves 5 are convenient for use in conjunction with the subsequent installation of guide rods.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A clamping mechanism for tensile testing of thin film materials, characterized in that, include: A fixed seat (1) and a pressing mechanism; a fixed pressing block (3) is fixedly connected to the lower end of the fixed seat (1), and an installation cavity (14) is provided at the upper end of the fixed seat (1). A movable pressing block (2) is slidably connected to the fixed seat (1) through the installation cavity (14). A pressing mechanism is provided in the installation cavity (14) and is connected to the movable pressing block (2) in a transmission manner. Both the movable clamping block (2) and the fixed clamping block (3) are movably provided with detachable steel plates (4) that can be slidably installed, and the two detachable steel plates (4) are parallel to each other; Whether to remove the removable steel sheet (4) for pressing depends on the type of film material.

2. The film material tensile testing clamp mechanism according to claim 1, characterized in that: Two detachable steel plates (4) are fixedly connected to a fixing block (9) at one end away from each other. The fixing block (9) has threaded holes at both ends. The fixing clamping block (3) and the detachable steel plate (4) are provided with a slot (7) at one end close to each other. The slot (7) matches the size of the fixing block (9). The slot (7) has through holes at both ends. The movable clamping block (2) and the fixed clamping block (3) are provided with fixing bolts (8) at the corresponding positions of the fixing block (9) and are threadedly connected to the fixing block (9).

3. The film material tensile testing clamp mechanism according to claim 1, characterized in that: The clamping mechanism includes a threaded rod (10) rotatably connected in the mounting cavity (14), and a connecting block (11) fixedly connected to the rear end of the movable clamping block (2). The connecting block (11) is slidably connected in the mounting cavity (14), and the threaded rod (10) is threadedly connected to the connecting block (11).

4. The film material tensile testing clamp mechanism according to claim 3, characterized in that: Both ends of the connecting block (11) are fixedly connected to limit sliders (12), and both ends of the mounting cavity (14) are provided with limit grooves (13). The limit sliders (12) are slidably connected inside the limit grooves (13) corresponding to their positions.

5. The film material tensile testing clamp mechanism according to claim 3, characterized in that: The threaded rod (10) has a rotating handle (6) fixedly connected to its top end.

6. The film material tensile testing clamp mechanism according to claim 1, characterized in that: The fixed base (1) is fixedly connected to guide sleeves (5) at both ends, and the guide sleeves (5) are provided with through holes.

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