A sample preparation mold for thin film coefficient of thermal expansion testing

Abstract

The utility model provides a kind of for film thermal expansion coefficient test's sample preparation mould, applicable to thermal dilatometer or thermal mechanical analyzer, it is related to film field.This for film thermal expansion coefficient test's sample preparation mould, including mould frame and rectangular cutting table, the inner wall of rectangular cutting table is fixedly connected with square punch body, the top of square punch body is fixedly connected with DC motor, the output shaft of DC motor is fixedly connected with one-way screw rod, the outer circumferential surface of one-way screw rod is connected with the inner wall of threaded slide cylinder with screw thread, the bottom of threaded slide cylinder is fixedly connected with circular punch body.This for film thermal expansion coefficient test's sample preparation mould, by the setting of square punch body, DC motor, one-way screw rod, threaded slide cylinder, circular punch body, position control sliding block, position control track, rectangular cutting table, U-shaped support, electric push rod, can effectively reach the purpose of quick slitting film and the convenient replacement of punching sample preparation shape, enhance the practical effect of this sample preparation mould, and simplify component composition, it is favorable for production, installation.

Description

Technical Field

[0001] This utility model relates to a sample preparation mold, specifically a sample preparation mold for testing the coefficient of thermal expansion of thin films, belonging to the field of thin film technology. Background Technology

[0002] In science, thin films are defined as two-dimensional materials formed by the deposition of atoms, molecules, or ions onto a substrate surface. In practical applications, thin film materials refer to thin layers of metal or organic matter with a thickness ranging from a single atom to several millimeters. Examples include optical thin films, composite thin films, superconducting thin films, polyester films, nylon films, plastic films, and metal films. Thin films are widely used in industries such as electronics, machinery, and printing.

[0003] When measuring the coefficient of thermal expansion of thin films along the X / Y axes using a dilatometer or thermomechanical analyzer, test strips are typically prepared by manually cutting and punching holes, which reduces testing efficiency. Furthermore, the ease of punching different hole shapes varies depending on the material of the thin film; sometimes, the hole shape needs to be changed according to the material characteristics, making it difficult to quickly punch holes of different shapes. Utility Model Content

[0004] The purpose of this invention is to solve the problems of low efficiency and difficulty in easily changing the shape of the perforated sample during the preparation of thin film thermal expansion coefficient test specimens.

[0005] This utility model is achieved through the following technical solution: a sample preparation mold for testing the coefficient of thermal expansion of thin films, including a mold frame and a rectangular shearing table. A square punching body is fixedly connected to the inner wall of the rectangular shearing table. A DC motor is fixedly connected to the top of the square punching body. A one-way lead screw is fixedly connected to the output shaft of the DC motor. The outer circumferential surface of the one-way lead screw is threadedly connected to the inner wall of a threaded slide. A circular punching body is fixedly connected to the bottom of the threaded slide. A control slider is fixedly connected to the outer circumferential surface of the threaded slide. The control slider is slidably connected to the inner wall of the square punching body through a control track. The tight fit between the components can effectively achieve the effect of conveniently changing the punching sample shape.

[0006] Preferably, a U-shaped bracket is fixedly connected to the upper surface of the rectangular shear table, and the top of the U-shaped bracket is fixedly connected to one end of the electric push rod. The electric push rod is existing technology and will not be described in detail.

[0007] Preferably, the electric push rod is fixedly connected to the top of the mold frame, and a support base is fixedly connected to the bottom of the mold frame. There are four support bases in total. The support bases can effectively support the mold frame.

[0008] Preferably, a control sleeve is fixedly connected to the upper surface of the rectangular shear table, and a positioning bolt is threadedly connected to the inner wall of the control sleeve. The positioning bolt can apply a control effect to the force-bearing groove rod.

[0009] Preferably, the inner wall of the rectangular shear table is slidably connected with a force-bearing groove rod, and one end of the force-bearing groove rod is fixedly connected to an external turntable. The external turntable is designed to facilitate rotation by the operator.

[0010] Preferably, the other end of the force-bearing groove rod is fixedly connected to a pressure base. The pressure base is provided with a square groove and a circular groove. The pressure base can press the film and ensure the stability of the punching position to the greatest extent.

[0011] Preferably, a force-applying spring is sleeved on the outer circumferential surface of the force-receiving groove rod. The force-applying spring is located between the rectangular shear table and the pressure base. The force-applying spring can effectively apply a rebound force to the pressure base.

[0012] This invention provides a sample preparation mold for testing the coefficient of thermal expansion of thin films, which has the following beneficial effects:

[0013] 1. This sample preparation mold for testing the coefficient of thermal expansion of thin films, through the setting of a square punch body, a DC motor, a one-way lead screw, a threaded slide, a circular punch body, a control slider, a control track, a rectangular shearing table, a U-shaped bracket, and an electric push rod, can effectively achieve the purpose of quickly cutting the film and conveniently changing the punched sample shape, thereby enhancing the practical effect of the sample preparation mold and simplifying the component composition, which is beneficial to production and installation.

[0014] 2. The sample preparation mold used for testing the coefficient of thermal expansion of thin films, through the setting of mold frame, control sleeve, positioning bolt, force groove rod, external turntable, pressure base, force spring, and support base, can effectively ensure the stability of the thin film punching sample preparation process, so that the thin film will not have the problem of stretching and wrinkling, thus improving the quality of thin film sample preparation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the pressure base of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the internal structure of the square punched body of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the control slider of this utility model;

[0019] Figure 5This is a three-dimensional structural diagram of the internal structure of the control sleeve of this utility model.

[0020] [Explanation of Key Component Symbols]

[0021] 1. Mold frame; 2. Square punched body; 3. DC motor; 4. One-way lead screw; 5. Threaded slide cylinder; 6. Circular punched body; 7. Control slider; 8. Control track; 9. Rectangular shear table; 10. U-shaped bracket; 11. Electric push rod; 12. Control sleeve; 13. Positioning bolt; 14. Force-bearing groove rod; 15. External turntable; 16. Pressure base; 17. Force-bearing spring; 18. Support base. Detailed Implementation

[0022] This utility model provides a sample preparation mold for testing the coefficient of thermal expansion of thin films.

[0023] Please see Figure 1 and Figure 2 The device includes a mold frame 1 and a rectangular shearing table 9. A force-receiving groove rod 14 is slidably connected to the inner wall of the rectangular shearing table 9. The rectangular shearing table 9 applies a position control effect to the force-receiving groove rod 14, so that the force-receiving groove rod 14 can only move vertically up and down. The surface of the force-receiving groove rod 14 is provided with strip-shaped grooves. By moving the rectangular shearing table 9 downward, it can cut the film, so that the cut film has a rectangular appearance.

[0024] Please see Figure 1 and Figure 2 A force-applying spring 17 is sleeved on the outer circumference of the force-receiving groove rod 14. The force-receiving groove rod 14 will exert a control effect on the force-applying spring 17 to ensure the stability of the force-applying spring 17, so that the force-applying spring 17 can be stretched and compressed normally. The force-applying spring 17 is located between the rectangular shear table 9 and the pressure base 16. The purpose of setting the force-applying spring 17 is to use the elasticity of the force-applying spring 17 itself to apply force to the pressure base 16 with the rectangular shear table 9 as the fulcrum, so that the pressure base 16 can press the film, ensure the stability of the film, and prevent the film from being pulled towards the punching position during the punching process, thus avoiding the problem of wrinkles. This improves the quality of film punching and ensures that the punching shape is in the same sample preparation.

[0025] Please see Figure 2 The other end of the force-receiving groove rod 14 is fixedly connected to the pressure base 16. The force-receiving groove rod 14 and the pressure base 16 maintain a linkage effect. The pressure base 16 is provided with a square groove and a circular groove. The design of the pressure base 16 is such that the square groove is adapted to the square punch body 2, and the circular groove is adapted to the circular punch body 6, ensuring that the pressure base 16 presses the film to the maximum extent and prevents wrinkles from appearing at the punch edge, thus further improving the practical effect of the film sample preparation mold.

[0026] Please see Figure 2 One end of the force-bearing groove rod 14 is fixedly connected to an external turntable 15. The outer circumferential surface of the external turntable 15 is provided with anti-slip texture. The purpose of setting the external turntable 15 is to facilitate the manual rotation of the force-bearing groove rod 14 by the staff, so that the rod will not slip during the rotation process.

[0027] Please see Figure 2 and Figure 5 A control sleeve 12 is fixedly connected to the upper surface of the rectangular shear table 9. The rectangular shear table 9 and the control sleeve 12 are integrated and maintain a linkage effect. The inner wall of the control sleeve 12 is threaded with a positioning bolt 13. The tight fit between the control sleeve 12 and the positioning bolt 13 means that when the positioning bolt 13 rotates, its own position will change, thereby pressing against the strip groove opened on the surface of the force-bearing groove rod 14, preventing the force-bearing groove rod 14 from rotating arbitrarily, ensuring the stability of the pressure base 16 connected with the force-bearing groove rod 14, and ensuring that the square punch 2 passes smoothly through the square groove, and the circular punch 6 passes smoothly through the circular groove, without the phenomenon of component collision due to the position displacement of the pressure base 16.

[0028] Please see Figure 1 and Figure 2 A U-shaped bracket 10 is fixedly connected to the upper surface of the rectangular shear table 9. The U-shaped bracket 10 provides a certain space between the rectangular shear table 9 and the U-shaped bracket 10, which is conducive to the rise of the external turntable 15. The top of the U-shaped bracket 10 is fixedly connected to one end of the electric push rod 11. The purpose of setting the electric push rod 11 is to provide sufficient power support for the movement of the U-shaped bracket 10. The electric push rod 11 is a known technology and will not be described in detail in this application.

[0029] Please see Figure 1 The electric push rod 11 is fixedly connected to the top of the mold frame 1. The mold frame 1 ensures the stable operation of the electric push rod 11. The bottom of the mold frame 1 is fixedly connected to the support base 18. There are four support bases 18 in total. The purpose of setting four support bases 18 is to effectively support the mold frame 1 and ensure the stability of the mold frame 1 after support.

[0030] Please see Figure 2 and Figure 3A rectangular shear table 9 has a square punching body 2 fixedly connected to its inner wall. The rectangular shear table 9 and the square punching body 2 maintain a linkage effect. The square punching body 2 can effectively perform square punching operations on the film through stamping. A DC motor 3 is fixedly connected to the top of the square punching body 2. The output shaft of the DC motor 3 is fixedly connected to a one-way lead screw 4. The purpose of setting the DC motor 3 is to effectively provide sufficient power support for the rotation of the one-way lead screw 4. The DC motor 3 is existing technology and will not be described in detail.

[0031] Please see Figure 3 The outer circumferential surface of the one-way screw 4 is threadedly connected to the inner wall of the threaded slide cylinder 5. The tight fit between the one-way screw 4 and the threaded slide cylinder 5 allows the one-way screw 4 to rotate effectively when the threaded slide cylinder 5 remains stable. A circular punch 6 is fixedly connected to the bottom of the threaded slide cylinder 5, and the threaded slide cylinder 5 and the circular punch 6 maintain a linkage effect. The purpose of setting the circular punch 6 is to make circular holes in the film.

[0032] Please see Figure 3 and Figure 4 The threaded slide 5 is fixedly connected to the outer circumference of the control slider 7. The threaded slide 5 and the control slider 7 are integrated and maintain a linkage effect. The control slider 7 is slidably connected to the inner wall of the square punched body 2 through the control track 8. The tight fit between the control slider 7 and the control track 8 can effectively ensure the stability of the control slider 7 during movement and prevent it from falling off.

[0033] Working Principle: During use, the film is laid flat inside the mold frame 1. The controller activates the electric push rod 11, which pushes the U-shaped bracket 10, rectangular shear table 9, and other components downwards synchronously. At this point, the pressure base 16 first contacts the film, and through reaction force, the force-receiving groove rod 14, connected to the pressure base 16, along with the external turntable 15, moves upwards. The pressure base 16 then strongly presses against the force spring 17. Under the elasticity of the force spring 17, a force is applied to the pressure base 16, allowing it to strongly press the film and ensure its stability. Subsequently, the rectangular shear table 9 contacts the film and, through downward pressure, cuts the film into a rectangular shape. Then, the square punching body 2... The step moves downwards, passing through the square groove of the pressure base 16, allowing for square punching of the film. When it is necessary to change the punching sample shape, the DC motor 3 is started again by the controller, driving the one-way screw 4 to rotate. At this time, the control slider 7, which is connected to the threaded slide 5, will be restricted by the control track 8. Therefore, the one-way screw 4 can drive the threaded slide 5 to move downwards, causing the circular punch 6 to extend out of the square punch 2. Then, the positioning bolt 13 is turned to release the restriction on the force-bearing groove rod 14. The force-bearing groove rod 14 is then rotated by the external turntable 15, causing the pressure base 16 to rotate 180 degrees. This allows the position of the circular groove on the pressure base 16 to be adjusted, enabling the circular punch 6 to successfully complete the circular punching of the film, thus achieving the purpose of conveniently changing the punching sample shape.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sample preparation mold for thin film coefficient of thermal expansion testing, suitable for use in a thermal dilatometer or thermal mechanical analyzer, comprising a mold frame (1) and a rectangular shear table (9), characterized in that: The inner wall of the rectangular shear table (9) is fixedly connected to a square punch body (2). The top of the square punch body (2) is fixedly connected to a DC motor (3). The output shaft of the DC motor (3) is fixedly connected to a one-way lead screw (4). The outer circumferential surface of the one-way lead screw (4) is threadedly connected to the inner wall of the threaded slide cylinder (5). The bottom of the threaded slide cylinder (5) is fixedly connected to a circular punch body (6). The outer circumferential surface of the threaded slide cylinder (5) is fixedly connected to a control slider (7). The control slider (7) is slidably connected to the inner wall of the square punch body (2) via a control track (8).

2. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 1, wherein: The upper surface of the rectangular shear table (9) is fixedly connected to a U-shaped bracket (10), and the top of the U-shaped bracket (10) is fixedly connected to one end of the electric push rod (11).

3. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 2, wherein: The electric push rod (11) is fixedly connected to the top of the mold frame (1), and the bottom of the mold frame (1) is fixedly connected to a support base (18), with a total of four support bases (18).

4. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 1, wherein: The upper surface of the rectangular shear table (9) is fixedly connected to a control sleeve (12), and the inner wall of the control sleeve (12) is threaded with a positioning bolt (13).

5. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 1, wherein: The inner wall of the rectangular shear table (9) is slidably connected to a force-bearing groove rod (14), and one end of the force-bearing groove rod (14) is fixedly connected to an external turntable (15).

6. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 5, wherein: The other end of the force-bearing groove rod (14) is fixedly connected to a pressure base (16), which has square grooves and circular grooves respectively.

7. The sample preparation mold for thin film coefficient of thermal expansion testing of claim 5, wherein: A force-applying spring (17) is sleeved on the outer circumference of the force-receiving groove rod (14), and the force-applying spring (17) is located between the rectangular shear table (9) and the pressure base (16).

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