A high-precision multifunctional clamp for DMA test

Abstract

The utility model discloses a high accuracy multifunctional clamp for DMA test relates to DMA test fixture technical field, this high accuracy multifunctional clamp for DMA test, including a pair of derricks, fixedly connected with U -shaped plate between a pair of derricks, is established in the inside of U -shaped plate and has the sliding slot no.

Description

Technical Field

[0001] This utility model relates to the field of DMA test fixture technology, and in particular to a high-precision multi-functional fixture for DMA testing. Background Technology

[0002] In Dynamic Mechanical Analysis (DMA) testing, the fixture serves as a crucial auxiliary device, and its structural design directly impacts the test's accuracy, efficiency, and applicability. Traditional DMA test fixtures often employ fixed or single-function structures, enabling only one test mode—tension or bending—making it difficult to meet diverse testing needs. Different fixtures are required for different test items.

[0003] Especially when frequent changes in test modes or sample types are required, traditional fixtures have poor adaptability and flexibility, limiting their application in complex testing environments. Utility Model Content

[0004] This utility model provides a high-precision multi-functional fixture for DMA testing, including a pair of lifting rods, a U-shaped plate fixedly connected between the pair of lifting rods, a first sliding groove opened inside the U-shaped plate, a first clamping auxiliary component slidably disposed in the first sliding groove, a first clamping assembly fixedly installed on the U-shaped plate at one end of the first sliding groove, and a second clamping auxiliary component slidably installed on the upper end of the U-shaped plate. The second clamping auxiliary component and the first clamping assembly cooperate to achieve tensile clamping of the material. Through the coordinated cooperation between the first clamping auxiliary component, the first clamping assembly and the second clamping auxiliary component, a clamping structure suitable for material bending testing is constructed.

[0005] Preferably, the clamping auxiliary component includes a movable block that slides within a groove, and a positioning head is fixedly connected to the upper end of the movable block.

[0006] Preferably, an adjusting screw three is rotatably provided inside the slide groove one, and the adjusting screw three is threadedly connected to the moving block.

[0007] Preferably, the second clamping auxiliary component includes a movable seat, with symmetrical limiting strips fixedly provided on the upper end of the U-shaped plate. The two sides of the movable seat slide on the two limiting strips respectively. A cylinder is installed on the movable seat, and the piston end of the cylinder is connected to the second clamping assembly.

[0008] Preferably, the second clamping component has the same structure as the first clamping component. The first clamping component includes a bottom block, a side clamp 1 is fixedly disposed on the upper end of the bottom block, a sliding groove 2 is opened on the lower side of the bottom block, and the side clamp 2 is slidably disposed in the sliding groove 2. After the side clamp 1 and the side clamp 2 are attached together, the upper end forms a cylindrical structure.

[0009] Preferably, an adjusting screw two is rotatably installed inside the sliding groove two, and the adjusting screw two is threadedly connected to the lower end of the side clamp two.

[0010] Preferably, both the first and second side clips have a number of anti-slip protrusions on their inner sides.

[0011] Preferably, a socket is provided on one side of the bottom block, and a plug is fixedly provided on one side of the side clamp, with the plug engaging with the socket.

[0012] Preferably, a limit block is fixedly provided on one side of the U-shaped plate.

[0013] Preferably, an adjusting screw is rotatably provided between the pair of booms, the adjusting screw is threadedly connected to the movable seat, and a fixing block is fixedly provided at the upper end of the boom.

[0014] This utility model provides a high-precision multi-functional fixture for DMA testing, which, compared with the prior art, offers the following advantages:

[0015] 1. This utility model constructs a flexibly adjustable clamping structure by setting a sliding groove inside a U-shaped plate, configuring a movable clamping auxiliary component one and a first clamping assembly, and combining it with a clamping auxiliary component two slidably installed on the upper end of the U-shaped plate. This design not only meets the tensile clamping requirements of materials, but also achieves bending testing functions through the coordinated cooperation of the three components, significantly improving the functional versatility and testing adaptability of the fixture.

[0016] 2. This utility model achieves stable clamping of the end of the material to be tested by the mutual proximity of side clamp one and side clamp two. When the two are completely closed, their contact end faces together form a cylindrical structure, which facilitates sample placement. This design not only improves the adaptability and ease of operation of the fixture, but also expands its application functions in various testing scenarios, achieving a balance between clamping stability and usage flexibility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the vertical clamping state of the sample according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the sample being held laterally according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the limiting block and other components according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram showing the disassembled structure of the first clamping component according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the side clamp structure according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the auxiliary clamping member two in an embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of the auxiliary clamping component according to an embodiment of the present utility model.

[0026] Reference numerals in the attached drawings: 1. Hanging rod; 2. Fixing block; 3. U-shaped plate; 4. Limiting strip; 5. Limiting block; 6. Adjusting screw one; 7. Slide groove one; 8. First clamping assembly; 81. Bottom block; 82. Slide groove two; 83. Adjusting screw two; 84. Side clamp one; 85. Side clamp two; 86. Insertion hole; 87. Insertion block; 88. Anti-slip protrusion; 9. Moving seat; 10. Cylinder; 11. Second clamping assembly; 12. Moving block; 13. Positioning head; 14. Adjusting screw three. Detailed Implementation

[0027] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] Please refer to Figures 1-8 This utility model provides a high-precision multi-functional fixture for DMA testing, including a pair of lifting rods 1, a U-shaped plate 3 fixedly connected between the pair of lifting rods 1, a sliding groove 7 opened inside the U-shaped plate 3, and a clamping auxiliary component 1 slidably disposed in the sliding groove 7.

[0029] The clamping auxiliary component includes a movable block 12 that slides within a groove 7. A positioning head 13 is fixedly connected to the upper end of the movable block 12 for supporting the test sample.

[0030] Furthermore, an adjusting screw 14 is rotatably installed inside the slide groove 7. The adjusting screw 14 is threadedly connected to the moving block 12. The adjusting screw 14 can be rotated manually or electrically to drive the moving block 12 to move precisely inside the slide groove 7, thereby achieving adaptability adjustment for samples of different lengths.

[0031] A first clamping assembly 8 is fixedly installed on a U-shaped plate 3 at one end of a slide groove 7. The first clamping assembly 8 includes a base block 81, a side clamp 84 fixedly provided at the upper end of the base block 81, and a slide groove 82 provided at the lower part of the base block 81. A side clamp 85 is slidably provided in the slide groove 82. When the adjusting screw 83 is manually rotated, it drives the side clamp 85 to slide in the slide groove 82 to realize the opening and closing action between it and the side clamp 84. After the two are closed, their upper ends form a cylindrical structure, which makes it easy to place objects flat on the upper end.

[0032] Both the contact surfaces of side clamp 1 84 and side clamp 2 85 are provided with several anti-slip protrusions 88 to enhance the clamping friction and prevent the sample from slipping. In addition, the bottom block 81 is provided with an insertion hole 86 on one side, and the side clamp 2 85 is provided with an insertion block 87 at the corresponding position. The two are inserted and matched to improve the tightness when they are in contact.

[0033] At the upper end of the U-shaped plate 3, a second clamping auxiliary component is provided. The second clamping auxiliary component includes a movable seat 9. The two sides of the movable seat 9 are slidably disposed on the limiting strips 4 symmetrically arranged at the upper end of the U-shaped plate 3 to ensure stability and guidance during movement. A cylinder 10 is installed on the movable seat 9. The piston end of the cylinder 10 is connected to the second clamping assembly 11. The second clamping assembly 11 has the same structure as the first clamping assembly 8 and also has the ability to form a cylindrical clamping end.

[0034] An adjusting screw 6 is also rotatably provided between a pair of lifting rods 1. The adjusting screw 6 is threadedly connected to the moving seat 9 and can be used to control the horizontal movement of the clamping auxiliary component 2. A fixing block 2 is fixedly provided at the upper end of the lifting rod 1. The fixing block 2 can be fixed to the testing instrument by fixing bolts.

[0035] In actual use, the operation procedure of the fixture is as follows:

[0036] One end of the sample to be tested is placed between side clamp 84 and side clamp 85 of the first clamping assembly 8. By adjusting the lead screw 83, side clamp 85 is driven to move closer to side clamp 84, thereby achieving a stable clamping of the sample end.

[0037] Start the adjusting screw 6 to move the moving seat 9 along the upper end of the U-shaped plate 3 until the second clamping component 11 corresponds to the first clamping component 8. To ensure positioning accuracy, a limiting block 5 that cooperates with the moving seat 9 is provided on one side of the U-shaped plate 3. When the moving seat 9 contacts the limiting block 5, it indicates that the second clamping component 11 is in the correct position, so that the second clamping component 11 clamps the upper end of the object, thereby realizing the vertical clamping of the object.

[0038] In addition, the height of the second clamping assembly 11 can be adjusted by extending and retracting the cylinder 10. When the cylinder 10 pushes the second clamping assembly 11 to move upward, the object is stretched.

[0039] Secondly, when side clamp 1 84 and side clamp 2 85 are combined, a cylindrical structure is formed at the upper end. The position of the moving block 12 is adjusted according to the length of the object, and the object is placed flat on the upper end of the positioning head 13 and the first clamping component 8. The position of the second clamping component 11 is adjusted, and the upper end of the object is positioned by the second clamping component 11 to achieve lateral fixation of the object.

[0040] In addition, the second clamping assembly 11 is slowly lowered by the cylinder 10 to apply vertical pressure to the middle of the sample, causing it to undergo controllable bending deformation.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-precision multi-functional fixture for DMA testing, comprising a pair of lifting rods (1), characterized in that: A U-shaped plate (3) is fixedly connected between a pair of the aforementioned rods (1). A sliding groove (7) is provided inside the U-shaped plate (3). A clamping auxiliary component (1) is slidably arranged in the sliding groove (7). A first clamping assembly (8) is fixedly installed on the U-shaped plate (3) at one end of the sliding groove (7). A second clamping auxiliary component (2) is slidably installed on the upper end of the U-shaped plate (3). The second clamping auxiliary component (2) and the first clamping assembly (8) cooperate to achieve the stretching clamping of the material. Through the coordinated cooperation between the first clamping auxiliary component (1), the first clamping assembly (8), and the second clamping auxiliary component (2), a clamping structure suitable for material bending test is constructed.

2. The high-precision multi-functional fixture for DMA testing according to claim 1, characterized in that: The clamping auxiliary component includes a movable block (12) that slides in a slide groove (7), and a positioning head (13) is fixedly connected to the upper end of the movable block (12).

3. The high precision multi-functional fixture for DMA test according to claim 2, characterized in that: An adjusting screw three (14) is rotatably installed inside the slide groove one (7), and the adjusting screw three (14) is threadedly connected to the moving block (12).

4. The high precision multi-functional fixture for DMA test according to claim 1, characterized in that: The second clamping auxiliary component includes a movable seat (9), and a symmetrical limiting strip (4) is fixedly provided on the upper end of the U-shaped plate (3). The two sides of the movable seat (9) slide on the two limiting strips (4) respectively. A cylinder (10) is installed on the movable seat (9), and the piston end of the cylinder (10) is connected to the second clamping assembly (11).

5. The high precision multi-functional fixture for DMA test according to claim 4, characterized in that: The second clamping component (11) has the same structure as the first clamping component (8). The first clamping component (8) includes a bottom block (81), a side clamp (84) is fixedly provided on the upper end of the bottom block (81), a sliding groove (82) is provided on the lower side of the bottom block (81), a side clamp (85) is slidably provided in the sliding groove (82), and the upper end of the side clamp (84) and the side clamp (85) are formed into a cylindrical structure after they are attached together.

6. The high-precision multi-functional fixture for DMA testing according to claim 5, characterized in that: An adjusting screw 2 (83) is rotatably installed inside the sliding groove 2 (82), and the adjusting screw 2 (83) is threadedly connected to the lower end of the side clamp 2 (85).

7. The high precision multi-functional fixture for DMA test according to claim 6, characterized in that: The inner sides of both the first side clamp (84) and the second side clamp (85) are provided with a number of anti-slip protrusions (88).

8. The high precision multi-functional fixture for DMA test according to claim 7, characterized in that: The bottom block (81) has an insertion hole (86) on one side, and the side clamp (85) has a fixed insertion block (87) on one side, which is inserted into the insertion hole (86).

9. The high-precision multi-functional fixture for DMA testing according to claim 1, characterized in that: A limit block (5) is fixedly installed on one side of the U-shaped plate (3).

10. The high-precision multi-functional fixture for DMA testing according to claim 1, characterized in that: An adjusting screw (6) is rotatably provided between the pair of booms (1), and the adjusting screw (6) is threadedly connected to the moving seat (9). A fixing block (2) is fixedly provided at the upper end of the boom (1).

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