Film sample punching and loading device

Abstract

The utility model discloses a film sample punching and loading device which comprises a clamping assembly, a lifting assembly, a top plate and a punching assembly, and a clamping plate is used for clamping and positioning a crucible; the lifting assembly comprises a lifting table, a lifting sliding rod, a lower pressing plate and an upper pressing plate, a square hole is formed in the lifting table, the upper pressing plate and the lower pressing plate which are the same in shape are arranged in the square hole, and a penetrating hole is formed in the upper pressing plate; a blanking hole is formed in the center of the top plate; the punching assembly is arranged on the upper side of the lifting assembly and comprises a hollow punching pipe, the punching pipe punches the thin film in the penetrating hole, and the caliber of the punching pipe is consistent with that of the crucible. The utility model has the beneficial effects that a film sample can be quickly sampled by arranging the punching assembly, and compared with a traditional sampling tool, the punching assembly is higher in sampling efficiency; and the punching pipe is matched with the aperture of the crucible, so that the sampled film sample can be better attached to the crucible, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal analyzer sample measurement, in particular to a film sample punching and loading device. Background Art

[0002] Thermal analysis instruments test physical or partial chemical changes in samples at programmed temperatures. They are widely used in research institutes, as well as in production, R&D, and quality control processes across various industries. During testing, samples of varying shapes and materials must be loaded into crucibles. Sample loading and preparation tools typically consist of spoons, scissors, and tweezers. Thin films present the greatest challenge in sample preparation. Manual shaping of thin films is difficult to achieve, making it difficult to maintain a regular and symmetrical shape. Poor morphological consistency impacts the reliability of test results, leading to reduced accuracy in material property assessments.

[0003] For example, if the sample is a thin film, especially a plastic film, it is light and thin, and easily sticks to tweezers and scissors due to electrostatic effects, making it very difficult to prepare a sample of a standard shape. At the same time, the thermal effect of thin films is very small, and it is difficult to measure a single layer. Generally, it is necessary to increase the sample size and stack multiple layers of film to enable more of the tiny thermal effects to be detected. Conventional test crucibles are round, with a diameter of approximately 5-6mm and a height of between 2-5mm. The size is very small. However, after the layers of thin film samples are stacked, the film itself has a certain elasticity. In order to adapt to the shape of the crucible, it is difficult to achieve the effect of fitting the crucible shape with conventional tools such as scissors, which affects the test results.

[0004] Therefore, we proposed a film sample punching experimental device to punch and load film samples. Utility Model Content

[0005] The purpose of the utility model is to provide a thin film sample punching and loading device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a thin film sample punching and loading device, comprising:

[0007] The clamping assembly includes a base plate, on which two sets of clamping plates are mounted opposite to each other, and the two sets of clamping plates are used to clamp and position the crucible;

[0008] The lifting assembly includes a lifting platform, a lifting slide, a lower pressure plate and an upper pressure plate. The lifting platform can move up and down along the lifting slide. The bottom end of the lifting slide is connected to the bottom plate. The lifting platform is provided with a square hole. The upper pressure plate and the lower pressure plate of the same shape are provided in the square hole, and the upper pressure plate is provided with an interlaced hole.

[0009] A top plate, the top plate is arranged at the top end of the lifting slide rod, and a blanking hole is provided at the center of the top plate;

[0010] A punching assembly is provided on the upper side of the lifting assembly and includes a hollow punching tube, wherein the punching tube cooperates with the insertion hole to punch the film in the insertion hole;

[0011] Wherein, the diameter of the punched tube is consistent with the diameter of the crucible.

[0012] Preferably, a groove opening upward is provided in the middle of the bottom plate, the clamping plate is arranged in the groove, and the opposite parts of the clamping plate are triangular inner recesses.

[0013] Preferably, a threaded rod is movably provided on the side wall of the groove, and the threaded rod is rotatably connected to the side wall of the groove.

[0014] Preferably, a handwheel is provided at one end of the threaded rod, and the handwheel drives the threaded rod to rotate on the side wall of the groove.

[0015] Preferably, guide rods are provided on both sides of the threaded rod, the guide rods are slidably connected to the side walls of the groove, one end of the guide rod is connected through a connecting rod, and the threaded rod is threadedly connected to the middle of the connecting rod.

[0016] Preferably, a positioning groove is provided on one side of the lifting platform, a support platform is provided at the bottom end of the inner wall of the square hole, and the lower pressure plate includes a pressure plate body and a pressure tongue, the pressure tongue is provided in the positioning groove, and the pressure plate body is provided on the support platform.

[0017] Preferably, the punching assembly also includes a first spring, a pressure wheel, a second spring, a push rod and a pressure button. The pressure wheel is arranged at the top end of the punching tube, the first spring is sleeved on the punching tube, the second spring is arranged on the top of the pressure wheel, the push rod is arranged in the second spring and the bottom end of the push rod downward passes through the pressure wheel and extends to the inner cavity of the punching tube, and the pressure button is arranged at the top end of the push rod.

[0018] Preferably, the lifting platform is provided with a butterfly bolt, and the top end of the butterfly bolt abuts against the lifting slide rod.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can quickly sample thin film samples by setting a punching component. Compared with traditional sampling tools, the punching component of the present invention has higher sampling efficiency; the punching tube is matched with the crucible diameter, which can make the thin film sample after sampling fit the crucible better, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is an exploded view of the utility model;

[0022] Figure 3 This is the front view of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the utility model.

[0024] In the figure: 1. Clamping assembly; 101. Bottom plate; 102. Groove; 103. Clamping plate; 104. Threaded rod; 105. Connecting rod; 106. Handwheel; 107. Guide rod; 108. Inner recess; 2. Crucible; 3. Lifting assembly; 301. Lifting platform; 302. Lifting slide bar; 303. Butterfly bolt; 304. Positioning groove; 305. Lower pressure plate; 3051. Pressure plate body; 3052. Pressing tongue; 306. Upper pressure plate; 307. Through hole; 309. Square hole; 3091. Support platform; 4. Top plate; 401. Blanking hole; 5. Punching assembly; 501. Punching tube; 502. Pressing wheel; 503. First spring; 504. Push rod; 505. Press button; 506. Second spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 4 The utility model provides a thin film sample punching experimental device, including a clamping component 1, a lifting component 3, a top plate 4 and a punching component 5. The clamping component 1 is used to clamp and fix the crucible 2, the lifting component 3 clamps and tightens the film to be punched, the punching component 5 is set on the top plate 4, and the punching component 5 is used to punch the film. After punching, a film sample is obtained, and then the film sample is sent into the crucible 2 for hot melting for testing by a thermal analysis instrument.

[0027] In some embodiments of the present invention, the clamping assembly 1 includes a base plate 101, on which are mounted two sets of opposing clamping plates 103. The clamping plates 103 can move relative to or toward each other, thereby clamping or releasing the crucible 2. Specifically, to ensure more stable clamping, the clamping plates 103 are provided with triangular recesses 108 at opposing locations.

[0028] In some specific embodiments of the present invention, to ensure a more stable grip of the crucible 2, an upwardly opening groove 102 is provided in the center of the bottom plate 101, and a clamping plate 103 is disposed within the groove 102. Furthermore, the movement of the clamping plate 103 is achieved via a threaded rod 104. The threaded rod 104 is rotatably connected to the sidewall of the groove 102 via a screw hole provided on the sidewall of the groove 102. One end of the threaded rod 104 passes through the sidewall of the groove 102 and is movably connected to the clamping plate 103. The other end of the threaded rod 104 is provided with a handwheel 106. Rotating the handwheel 106 can cause the threaded rod 104 to rotate on the sidewall of the groove 102, thereby driving the relative movement of the clamping plate 103 and thereby clamping the crucible 2. Guide rods 107 are set on both sides of the threaded rod 104, and the guide rods 107 are slidably connected to the side walls of the groove 102. The end of the guide rod 107 away from the splint 103 is connected through the connecting rod 105. The threaded rod 104 is threadedly connected to the connecting rod 105. The threaded rod 104 rotates to drive the splint 103 to move, and the guide rod 107 guides the splint 103 to make the splint 103 move more smoothly.

[0029] In some embodiments of the present utility model, the lifting component 3 includes a lifting platform 301, a lifting slide 302, a lower pressure plate 305 and an upper pressure plate 306. The lifting platform 301 can move up and down along the lifting slide 302. The bottom end of the lifting slide 302 is connected to the bottom plate 101. The lifting platform 301 is provided with a square hole 309. The square hole 309 is provided with an upper pressure plate 306 and a lower pressure plate 305 of the same shape, and the upper pressure plate 306 is provided with an interlaced hole 307. When sampling, the film is first placed between the upper pressure plate 306 and the lower pressure plate 305, and the punching component 5 punches and samples the film through the interlaced hole 307. Specifically, a positioning slot 304 is provided on one side of the lifting platform 301, and a support platform 3091 is provided at the bottom end of the inner wall of the square hole 309. The lower pressure plate 305 includes a pressure plate body 3051 and a pressure tongue 3052. The pressure tongue 3052 is disposed in the positioning slot 304, and the pressure plate body 3051 is disposed on the support platform 3091. Furthermore, a butterfly bolt 303 is provided on the lifting platform 301, the top of which abuts against the lifting slide 302, allowing the lifting platform 301 to be fixed at different heights of the lifting slide 302.

[0030] When in use, open and move the upper pressure plate 306, and place the superimposed film on the top of the lower pressure plate 305, and then press and fix it with the upper pressure plate 306. When lifting is required, loosen the butterfly bolt 303 so that the lifting platform 301 can move upward under the guidance of the lifting slide rod 302. After lifting to the appropriate position, tighten the butterfly bolt 303 to lock the lifting platform 301.

[0031] In some embodiments of the present invention, the top plate 4 is disposed at the top end of the lifting slide bar 302 , and a blanking hole 401 is provided at the center of the top plate 4 .

[0032] In some embodiments of the present invention, the punching assembly 5 includes a hollow punching tube 501, a pressure wheel 502, a first spring 503, a push rod 504, a press button 505 and a second spring 506. The pressure wheel 502 is arranged at the top of the punching tube 501, the first spring 503 is sleeved on the punching tube 501, the second spring 506 is arranged on the top of the pressure wheel 502, the push rod 504 is arranged in the second spring 506 and the bottom end of the push rod 504 downwardly penetrates the pressure wheel 502 and extends to the inner cavity of the punching tube 501, and the press button 505 is arranged at the top of the push rod 504.

[0033] When in use, press the pressing wheel 502 downward with force, and the downward pressure of the pressing wheel 502 drives the punching tube 501 to move downward. At this time, the first spring 503 is compressed, and the bottom of the punching tube 501 passes through the insertion hole 307 to punch the stacked films. Then press the pressing button 505, and the movement of the pressing button 505 drives the movement of the ejector rod 504, thereby ejecting the circular film in the inner cavity of the hollow punching tube 501 into the inner cavity of the crucible 2, thereby completing the sample loading.

[0034] In some embodiments, the diameter of the punched tube 501 matches the inner diameter of the crucible 2, so that the punched tube 501 can form a good fit with the crucible 2 when in contact, and the punched film sample can perfectly fit the shape of the crucible 2, thereby improving the accuracy of the test.

[0035] In the present invention, when in use, the films to be tested are first stacked multiple times, and then the upper pressing plate 306 is opened, and the stacked films are placed on top of the lower pressing plate 305, and then the upper pressing plate 306 is used to press and fix them, and then the pressing wheel 502 is pressed downwards, and the downward pressure of the pressing wheel 502 drives the punching tube 501 to move downwards. At this time, the first spring 503 is compressed, and the bottom of the punching tube 501 passes through the interlaced hole 307 to punch the stacked films. At this time, the inner cavity of the punching tube 501 is squeezed into the punched circular film, and then the downward pressure is applied. The plate 305, the upper pressure plate 306 and the punched film are removed, and the butterfly bolt 303 is loosened, so that the lifting platform 301 can move upward under the guidance of the lifting slide 302, and then the butterfly bolt 303 is tightened to lock the lifting platform 301, and then the bottom of the punched tube 501 is extended into the inner cavity of the crucible 2 through the square hole 309, and then the push button 505 is pressed. The movement of the push button 505 drives the movement of the push rod 504, thereby pushing the circular film in the inner cavity of the punched tube 501 into the inner cavity of the crucible 2, thereby completing the sample loading, and then the sample test is carried out.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film sample punching and loading device, characterized in that: include: The clamping assembly includes a base plate, on which two sets of clamping plates are mounted opposite to each other, and the two sets of clamping plates are used to clamp and position the crucible; The lifting assembly includes a lifting platform, a lifting slide, a lower pressure plate and an upper pressure plate. The lifting platform can move up and down along the lifting slide. The bottom end of the lifting slide is connected to the bottom plate. The lifting platform is provided with a square hole. The upper pressure plate and the lower pressure plate of the same shape are provided in the square hole, and the upper pressure plate is provided with an interlaced hole. A top plate, the top plate is arranged at the top end of the lifting slide rod, and a blanking hole is provided at the center of the top plate; A punching assembly is provided on the upper side of the lifting assembly and includes a hollow punching tube, wherein the punching tube cooperates with the insertion hole to punch the film in the insertion hole; Wherein, the diameter of the punched tube is consistent with the diameter of the crucible.

2. The thin film sample punching and loading device according to claim 1, characterized in that: A groove opening upward is provided in the middle of the bottom plate, the clamping plate is arranged in the groove, and the opposite parts of the clamping plate are all triangular inner notches.

3. The thin film sample punching and loading device according to claim 2, characterized in that: A threaded rod is movably provided on the side wall of the groove, and the threaded rod is rotatably connected to the side wall of the groove.

4. The thin film sample punching and loading device according to claim 3, characterized in that: A hand wheel is provided at one end of the threaded rod, and the hand wheel drives the threaded rod to rotate on the side wall of the groove.

5. The thin film sample punching and loading device according to claim 4, characterized in that: Guide rods are provided on both sides of the threaded rod, the guide rods are slidably connected to the side walls of the groove, one end of the guide rod is connected through a connecting rod, and the threaded rod is threadedly connected to the middle of the connecting rod.

6. The thin film sample punching and loading device according to claim 5, characterized in that: A positioning groove is provided on one side of the lifting platform, a support platform is provided at the bottom end of the inner wall of the square hole, and the lower pressure plate includes a pressure plate body and a pressure tongue. The pressure tongue is arranged in the positioning groove, and the pressure plate body is arranged on the support platform.

7. The thin film sample punching and loading device according to claim 6, characterized in that: The punching assembly also includes a first spring, a pressure wheel, a second spring, a push rod and a pressure button. The pressure wheel is arranged at the top end of the punching tube, the first spring is sleeved on the punching tube, the second spring is arranged on the top of the pressure wheel, the push rod is arranged in the second spring and the bottom end of the push rod downwardly passes through the pressure wheel and extends to the inner cavity of the punching tube, and the pressure button is arranged at the top end of the push rod.

8. The thin film sample punching and loading device according to claim 7, characterized in that: The lifting platform is provided with a butterfly bolt, and the top end of the butterfly bolt abuts against the lifting slide rod.

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