Novel mechanical clamp of film tension testing machine for experiment

Abstract

The utility model discloses a novel mechanical fixture of a film tension testing machine for experiment, which comprises an upper fixture and a lower fixture, the upper fixture comprises a connecting plate, a fixing block is arranged at the end part of the connecting plate, a fixing clamping block is arranged on one side of the surface of the connecting plate, a supporting block is arranged on the other side of the surface of the connecting plate, the supporting block is in threaded connection with a screw rod, and the screw rod is in threaded connection with the lower fixture. And one end of the screw rod is rotationally connected with a movable clamping block which is distributed opposite to the fixed clamping block. According to the utility model, the defects that the tension test is invalid due to the damage of a film sample caused by overlarge pressure, and an effective tension value cannot be accurately made due to the breakage of the film sample at a clamp opening in the stretching process are effectively overcome, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of film tensile testing machine clamps, in particular to a novel mechanical clamp of a film tensile testing machine for experiments. Background Art

[0002] The film tensile test machine on the market has a mechanical clamp. The film is stressed on the clamp. Due to excessive pressure, the film sample is damaged, making the tensile test invalid. During the stretching process, the film sample breaks at the clamp mouth, and it is impossible to accurately make an effective tensile value. During the stretching process, when the tension on the film is greater than 100N, the mechanical clamp cannot reliably clamp the sample, causing the sample to slip and drag, making the test invalid. Utility Model Content

[0003] The utility model aims to provide a novel mechanical fixture of a thin film tensile testing machine for experiments, so as to solve the technical problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a new type of mechanical clamp for an experimental thin film tensile testing machine, comprising an upper clamp and a lower clamp, the upper clamp comprising a connecting plate, a fixed block is arranged at the end of the connecting plate, a fixed clamp block is arranged on one side of the surface of the connecting plate, and a support block is arranged on the other side, a screw rod is threadedly connected to the support block, one end of the screw rod is rotatably connected to a movable clamp block distributed opposite to the fixed clamp block, and rubber pads are arranged on the opposite sides of the movable clamp block and the fixed clamp block, and the structure of the lower clamp is the same as that of the upper clamp.

[0005] Preferably, the fixing block is vertically distributed to the connecting plate, and a mounting hole is provided on the surface of the fixing block.

[0006] Preferably, the movable clamping block is slidably connected to the surface of the connecting plate.

[0007] Preferably, a threaded hole threadably connected to the screw rod is provided on the surface of the support block.

[0008] Preferably, a locking hole is provided on the side wall of the movable clamping block, the locking hole extends into the interior of the movable clamping block, and a top screw is threadedly connected to the locking hole, and the end of the top screw contacts the end side wall of the screw rod.

[0009] Preferably, a rotating rod is provided at one end of the screw rod away from the movable clamping block.

[0010] The utility model is a new type of mechanical fixture for experimental film tensile testing machine, which has the following advantages:

[0011] The utility model has a simple structure, reduces the cost of the clamp, is easy to operate, improves the efficiency of equipment use and the reliability of test results, and effectively solves the problem that the film sample is damaged due to excessive pressure, resulting in invalid tensile test. During the stretching process, the film sample breaks at the clamp mouth, and an effective tensile value cannot be accurately obtained, thereby reducing the cost of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a front view of the upper clamp in the utility model;

[0015] Figure 3 This is an exploded view of the upper clamp in the utility model.

[0016] Explanation of markings in the figure: 1. Upper clamp; 2. Lower clamp; 3. Connecting plate; 4. Fixed block; 5. Fixed clamping block; 6. Support block; 7. Movable clamping block; 8. Screw rod; 9. Turn rod; 10. Rubber pad; 11. Locking hole; 12. Threaded hole; 13. Mounting hole. DETAILED DESCRIPTION

[0017] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0021] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0022] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a novel mechanical fixture of a thin film tensile testing machine for experiments of the utility model in conjunction with the accompanying drawings.

[0023] like Figure 1-3 As shown, the utility model is a novel mechanical fixture for a film tensile test machine for experiments, comprising an upper fixture 1 and a lower fixture 2. The upper fixture 1 comprises a connecting plate 3, and a fixing block 4 is arranged at the end of the connecting plate 3. The fixing block 4 is vertically distributed with the connecting plate 3, and a mounting hole 13 is arranged on the surface of the fixing block 4. The fixing block 4 and the mounting hole 13 are arranged to facilitate the installation and fixing of the fixture. A fixing clamp 5 is arranged on one side of the surface of the connecting plate 3, and a supporting block 6 is arranged on the other side. A screw rod 8 is threadedly connected to the supporting block 6. One end of the screw rod 8 is rotatably connected to a movable clamp 7 that is distributed opposite to the fixed clamp 5, and a rubber pad 10 is arranged on the opposite side of the movable clamp 7 and the fixed clamp 5. The flat rubber pad has a certain self-adhesiveness. After the clamp is tightened, it fits tightly with the film sample without damaging the film sample, so as to achieve reliable conditions for the tensile test. The structure of the lower fixture 2 is the same as that of the upper fixture 1.

[0024] The movable clamp block 7 is slidably connected to the surface of the connecting plate 3. By rotating the screw rod 8, the screw rod 8 is threadedly connected to the support block 6, so that the screw rod 8 drives the movable clamp block 7 to move. The surface of the support block 6 is provided with a threaded hole 12 threadedly connected to the screw rod 8, and the side wall of the movable clamp block 7 is provided with a locking hole 11, which extends to the inside of the movable clamp block 7, and the locking hole 11 is threadedly connected with a top screw, and the end of the top screw contacts the end side wall of the screw rod 8. Through the cooperation of the locking hole 11 and the top screw, after the film is clamped by the movable clamp block 7 and the fixed clamp block 5, the top screw is tightened so that the end of the top screw is in close contact with the end side wall of the screw rod 8, thereby locking and fixing the screw rod 8, which can effectively prevent the screw rod 8 from loosening and causing the clamping instability to occur, thereby improving the reliability of the structure. A rotating rod 9 is provided at one end of the screw rod 8 away from the movable clamp block 7, and the setting of the rotating rod 9 facilitates the rotation of the screw rod 8.

[0025] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A new type of mechanical fixture for experimental film tensile testing machine, characterized by: The invention comprises an upper clamp (1) and a lower clamp (2), wherein the upper clamp (1) comprises a connecting plate (3), a fixed block (4) is arranged at the end of the connecting plate (3), a fixed clamp block (5) is arranged on one side of the surface of the connecting plate (3), and a supporting block (6) is arranged on the other side, a screw rod (8) is threadedly connected to the supporting block (6), one end of the screw rod (8) is rotatably connected to a movable clamp block (7) which is distributed opposite to the fixed clamp block (5), and a rubber cushion (10) is arranged on the opposite side of the movable clamp block (7) and the fixed clamp block (5), and the structure of the lower clamp (2) is the same as that of the upper clamp (1).

2. A novel mechanical fixture for a thin film tensile testing machine for experiments according to claim 1, characterized in that: The fixing block (4) is vertically distributed with respect to the connecting plate (3), and a mounting hole (13) is provided on the surface of the fixing block (4).

3. The novel mechanical fixture for thin film tensile testing machine for experiments according to claim 1 is characterized by: The movable clamping block (7) is slidably connected to the surface of the connecting plate (3).

4. The novel mechanical fixture for thin film tensile testing machine for experiments according to claim 1 is characterized by: The surface of the support block (6) is provided with a threaded hole (12) threadedly connected to the screw rod (8).

5. The novel mechanical fixture for thin film tensile testing machine for experiments according to claim 1 is characterized by: The side wall of the movable clamping block (7) is provided with a locking hole (11), the locking hole (11) extends into the interior of the movable clamping block (7), and a top screw is threadedly connected to the locking hole (11), and the end of the top screw contacts the end side wall of the screw rod (8).

6. A novel mechanical fixture for a thin film tensile testing machine for experiments according to claim 1, characterized in that: A rotating rod (9) is provided at one end of the screw rod (8) away from the movable clamping block (7).

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