A polyester film sampling cutter and assembly structure

Abstract

This utility model discloses a polyester film sampling tool, comprising: a tool holder with a through groove; a cutter fixedly connected to the tool holder, having a circumferential cutter assembly consisting of a pair of transverse and longitudinal cutters connected end-to-end around the through groove, and a circular cutter assembly located in the sample cutting area formed therein; the circular cutter assembly includes a pair of annular cutters, which are symmetrically arranged along the longitudinal axis of the sample cutting area. The above-mentioned polyester film sampling tool has a reasonable structure. Through the combination of the circumferential cutter assembly and the circular cutter assembly, it ensures that the cut edges of the multilayer film sample are in the same transverse and longitudinal direction, and the cut edges of the circular holes are at least in the same transverse direction, i.e., the measurement edges are common and the test points are collinear, ensuring that the cut edge for measuring the heat shrinkage rate of each film sample is the same reference edge, improving the accuracy of the heat shrinkage rate measurement of the film sample, and improving sampling efficiency through the through groove.

Description

Technical Field

[0001] This utility model relates to the technical field of thin film sampling tools, and in particular to a polyester film sampling tool and its assembly structure. Background Technology

[0002] In the thin film industry (below 250 micrometers), thermal shrinkage rate is one of the important parameters for evaluating the thermal deformation performance and downstream suitability of materials. It measures the batch-to-batch uniformity of the degree of internal strain introduced during processing and prevents phenomena such as dimensional changes, surface wrinkling, and deformation of films under conditions such as heating.

[0003] The production process requires timely feedback on the heat shrinkage rate index. Currently, production equipment is configured with a large width. In order to test the performance, the density of test points and both the transverse and longitudinal directions must be taken into account. However, the traditional method of using Abbe length gauges and vernier calipers for inspection is time-consuming, increases the labor intensity of inspectors, lacks accuracy, and is prone to misreading. If it cannot be corrected in time, it can easily lead to the judgment of abnormalities in batch products, resulting in the waste of batch products and increased cost consumption.

[0004] Patent CN219977816U discloses a sampler for testing the shrinkage rate of polyester film, including a frame, an eccentric wheel, a die, a guide rod, a pad, and a driving device. The eccentric wheel is rotatably connected to the frame. The die is used to cut the sample to be cut into test samples of a preset size. The guide rod is slidably connected to the frame, with one end abutting against the eccentric wheel and the other end of the guide rod having the die. The pad is placed on the frame and opposite to the die, and is used to place the sample to be cut. The driving device is connected to the eccentric wheel and can drive the eccentric wheel to rotate, thereby driving the die to cut the sample. This invention can cut multiple stacked polyester films simultaneously, is convenient to operate, has high cutting efficiency, and ensures that the hand does not come into contact with the die during use, preventing the die from scratching the hand and providing high safety. However, after the multilayer film sample is cut, the sample near the die is easy to stick to the die mounting plate, making it difficult to sample. The die only cuts longitudinally and laterally and tests the heat shrinkage performance. However, the heat shrinkage in the sample area enclosed by the longitudinal and lateral cutting edges is not measured. If the sample area is marked separately, the accuracy of the marking edges and positions will be poor, which will lead to inaccurate heat shrinkage rate measurement.

[0005] Therefore, it is necessary to improve the existing polyester film sampling tools. Utility Model Content

[0006] One of the objectives of this invention is to overcome the deficiencies in the existing technology and provide a polyester film sampling tool. The cutting tool, which combines a circumferential cutting component and a circular cutting component, ensures that the cutting edges of the multilayer film sample are in the same horizontal and vertical direction, and that the cutting edges of the circular holes are at least in the same horizontal direction. That is, the measurement edges are common and the test points are collinear, ensuring that the cutting edges for measuring the heat shrinkage rate of each film sample are the same reference edges, thereby improving the accuracy of the heat shrinkage rate measurement of the film sample. Furthermore, the sampling efficiency is improved through the through-groove.

[0007] To achieve the above technical effects, the technical solution of this utility model is: a polyester film sampling tool for pressing and sampling the film, comprising:

[0008] The tool holder is equipped with a through slot;

[0009] The cutter, fixedly connected to the cutter holder, has a circumferential cutter assembly consisting of a pair of transverse cutters and a longitudinal cutter connected end to end and surrounding the periphery of the through groove, and a circular cutter assembly located in the cutting area formed by the cutter assembly.

[0010] The circular blade assembly includes a pair of annular cutters, which are symmetrically arranged along the longitudinal axis of the cutting area.

[0011] A preferred technical solution is that at least four annular cutters are provided, and the four annular cutters are located at the included angle of the cutting area.

[0012] A preferred technical solution is that the through groove is eccentrically positioned in the sample cutting area.

[0013] The second objective of this utility model is to overcome the defects existing in the prior art and provide a polyester film sampling assembly structure, including:

[0014] The base is equipped with a sampling pad with a thin film support surface;

[0015] The pressure application component moves closer to or further away from the film support surface of the sampling pad via a fine-tuning element;

[0016] It also includes the aforementioned polyester film sampling tool, which is movably disposed between the pressure application component and the sampling pad, and a film-penetrating channel is provided between the tool and the sampling pad.

[0017] A preferred technical solution is that the pressure application component includes a support frame and a pressure plate located below the support frame, and the pressure plate is adjusted by the fine-tuning component to maintain a vertically aligned distance with the support frame.

[0018] A preferred technical solution is that the support frame is provided with a first through hole and a second through hole respectively disposed on both sides of the first through hole, the first end of the fine adjustment component passes through the first through hole and is threadedly connected thereto, and is rotatably connected to the pressure plate, the pressure plate is provided with a movable connecting rod extending toward the support frame, and the fixed end of the movable connecting rod passes through the second through hole.

[0019] A preferred technical solution is that an elastic element is sleeved between the end face of the fixed end and the top surface of the support frame, and the elastic element has compressive deformation or tensile deformation along the length direction of the movable connecting rod.

[0020] A preferred technical solution is that the base is provided with a guide extending along a first direction, and the support frame is in concave-convex cooperation with the guide and reciprocates along it.

[0021] A preferred technical solution is that a limiting member is provided between the bottom surface of the sampling pad and the base, and the first direction is consistent with the extension direction of a set of opposite sides of the sampling pad.

[0022] A preferred technical solution is that both the tool holder and the pressure plate are made of transparent plastic.

[0023] This polyester film sampling tool has a reasonable structure. When cutting multilayer film samples, the combination of circumferential and circular cutting blades ensures that the cut edges of the samples are in the same horizontal and vertical direction. The annular cutting blade cuts the samples to obtain circular hole cut edges. The circular hole cut edges obtained by the symmetrically arranged annular cutting blades are at least in the same horizontal direction. This not only ensures that the cut edges for measuring the heat shrinkage rate of each film sample are the same reference edge, but also ensures that the measurement edges of the same film sample are common and the test points are collinear, thus improving the accuracy of heat shrinkage rate measurement. The through-groove facilitates the sampling of film samples attached to the tool. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the tool in the polyester film sampling tool and assembly structure of this utility model;

[0025] Figure 2 yes Figure 1 Top view of the cutting tool;

[0026] Figure 3 This is a schematic diagram of the assembly structure of the sampling tool containing polyester film.

[0027] In the figure: 1. Cutting tool; 2. Base; 3. Pressure application assembly; 10. Cutting blade; 11. Blade holder; 12. Circumferential cutting blade assembly; 13. Circular blade assembly; 20. Sampling pad; 21. Guide component; 30. Fine adjustment component; 31. Pressure plate; 32. Elastic component; 33. Support frame; 100. Through slot; 121. Longitudinal cutter; 122. Transverse cutter; 130. Annular cutter; 301. First end; 310. Fixed end; 311. Movable connecting rod. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0029] The terms "top surface," "bottom surface," "bottom surface," and "inside" refer to the normal operating state of the polyester film sampling tool and are used only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] Figures 1-3 As shown, the polyester film sampling tool 1 of this utility model is used for pressing and sampling of film, including a tool holder 11 and a cutter 10. The tool holder 11 is provided with a through groove 100. The cutter 10 is fixedly connected to the tool holder 11 and has a circumferential cutter assembly 12 consisting of a pair of transverse cutters 121 and a longitudinal cutter 122 connected end to end and surrounding the through groove 100, and a circular cutter assembly 13 located in the sample cutting area formed therein. The circular cutter assembly 13 includes a pair of annular cutters 130, which are symmetrically arranged along the longitudinal axis of the sample cutting area.

[0032] When the cutter 10, composed of the circumferential cutter assembly 12 and the circular cutter assembly 13, cuts multilayer film samples, the paired transverse cutter 121 and longitudinal cutter 122 ensure that the cut edges of the sample are in the same transverse and longitudinal direction. The annular cutter 130 cuts the sample to obtain a circular hole cut edge. The circular hole cut edges obtained by the symmetrically arranged annular cutters 130 are at least in the same transverse direction. This not only ensures that the cut edge for measuring the heat shrinkage performance of each film sample is the same reference edge, but also ensures that the measurement edge of the same film sample is common and the test point is collinear, thus improving the accuracy of heat shrinkage rate measurement. The through groove 100 facilitates the sampling of the film sample attached to the cutter.

[0033] The principle of heat shrinkage rate measurement is based on the ratio of the length change of the transverse and longitudinal cut edges before and after heat shrinkage to the initial length of the transverse and longitudinal cut edges, and the ratio of the diameter change of the circular hole cut edge before and after heat shrinkage to the initial diameter of the circular hole cut edge.

[0034] To ensure that the cut edges of the circular holes obtained by the annular cutter 130 are in the same horizontal and vertical directions, and to further improve the accuracy of the heat shrinkage rate measurement, at least four annular cutters are provided, and the four annular cutters 130 are set at the included angle of the sample cutting area.

[0035] To ensure uniform pressure during the cutting of the film sample and to guarantee efficient sampling of the cut film sample, the through groove 100 is eccentrically positioned in the cutting area. The eccentrically positioned through groove 100 also facilitates the installation, placement, and removal of the cutting tool.

[0036] The polyester film sampling assembly structure includes a base 2, a pressure application component 3, and the aforementioned polyester film sampling blade 1. The base 2 is provided with a sampling pad 20 having a film support surface. The pressure application component 3 moves closer to or further away from the film support surface of the sampling pad 20 via a fine-tuning component 30. The blade 1 is movably disposed between the pressure application component 3 and the sampling pad 20, and a film-penetrating channel is provided between the blade 1 and the sampling pad 20.

[0037] Instructions for use: Place the sampling pad 20 on the base 2, then place the sample on the film support surface of the sampling pad 20, and then place the cutter 1 on the sample. The sample can be a multi-layer film sample. Then, place the pressure application component 3 above the cutter 1, and use the fine adjustment component 30 to make the pressure application component 3 abut against the cutter 1, thereby generating pressure from top to bottom on the cutter 1. Finally, cut the sample. After cutting the sample, use the fine adjustment component 30 to move the pressure application component 3 away from the cutter 1, remove the cutter 1, and obtain the film sample.

[0038] The pressure application assembly 3 includes a support frame 33 and a pressure plate 31 located below the support frame 33. The pressure plate 31 is adjusted vertically with the support frame 33 by a fine-tuning component 30. The width of the pressure plate 31 is greater than or equal to the width of the cutter holder 11, and the length of the pressure plate 31 is greater than or equal to the length of the cutter holder 11. To facilitate observation of the film sample cutting process, both the cutter holder 11 and the pressure plate 31 are made of transparent plastic.

[0039] Specifically, the support frame 33 is provided with a first through hole and second through holes respectively located on both sides of the first through hole. The first end 301 of the fine-tuning member 30 passes through the first through hole and is threadedly connected to it, and is rotatably connected to the pressure plate 31. The pressure plate 31 is provided with a movable connecting rod 311 extending toward the support frame 33, and the fixed end 310 of the movable connecting rod 311 passes through the second through hole. Furthermore, an elastic member 32 is sleeved between the end face of the fixed end 310 and the top surface of the support frame 33. The elastic member 32 has compressive deformation or tensile deformation along the length direction of the movable connecting rod 311. The fine-tuning component 30 is threadedly connected to the support frame 33. After rotating along its axis, the fine-tuning component 30 moves up or down through the first end 301 of the first through hole, thereby driving the pressure plate 31, which is rotatably connected to the first end 301, to move up or down synchronously. The movable connecting rod 311 on the pressure plate 31 restricts the relative pressing position between the pressure plate 31 and the cutter 1, preventing displacement of the film sample and offset of the cutting edge. The elastic component 32 further enhances the stability of the connection between the pressure plate 31 and the support frame 33. The pressure plate 31 has a receiving groove that engages with and is movably connected to the first end 301. The elastic component 32 includes, but is not limited to, a spring.

[0040] In order to define the relative position of the support frame 33 and the base 2 and to facilitate the installation of components and the placement of samples, the base 2 is provided with a guide 21 extending in a first direction, and the support frame 33 and the guide 21 are in concave-convex fit and reciprocate along it.

[0041] To ensure the stability of the relative position between the device and components and the thin film sample during sample cutting, a limiting member (not shown) is provided between the bottom surface of the sampling pad 20 and the base 2. The first direction is consistent with the extension direction of a set of opposite sides of the sampling pad 20. The limiting member has at least two protrusions on one of the sampling pad 20 and the base 2, and a corresponding recess on the other, utilizing the principle of two points determining a line.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A polyester film sampling tool for pressing and sampling films, characterized in that, include: The tool holder is equipped with a through slot; The cutter, fixedly connected to the cutter holder, has a circumferential cutter assembly consisting of a pair of transverse cutters and a longitudinal cutter connected end to end and surrounding the periphery of the through groove, and a circular cutter assembly located in the cutting area formed by the cutter assembly. The circular blade assembly includes a pair of annular cutters, which are symmetrically arranged along the longitudinal axis of the cutting area.

2. The polyester film sampling tool according to claim 1, characterized in that, At least four annular cutters are provided, and the four annular cutters are located at the included angle of the cutting area.

3. The polyester film sampling tool according to claim 1, characterized in that, The through groove is eccentrically positioned in the sample cutting area.

4. A polyester film sampling assembly structure, comprising: The base is equipped with a sampling pad with a thin film support surface; The pressure application component moves closer to or further away from the film support surface of the sampling pad via a fine-tuning element; The feature is that it further includes the polyester film sampling tool according to any one of claims 1 to 3, wherein the tool is movably disposed between the pressure application component and the sampling pad, and a film-penetrating channel is provided between the tool and the sampling pad.

5. The polyester film sampling assembly structure according to claim 4, characterized in that, The pressure application assembly includes a support frame and a pressure plate located below the support frame. The pressure plate is adjusted by the fine-tuning component to maintain a vertically aligned distance with the support frame.

6. The polyester film sampling assembly structure according to claim 5, characterized in that, The support frame is provided with a first through hole and a second through hole located on both sides of the first through hole. The first end of the fine-tuning component passes through the first through hole and is threadedly connected to it, and is rotatably connected to the pressure plate. The pressure plate is provided with a movable connecting rod extending toward the support frame, and the fixed end of the movable connecting rod passes through the second through hole.

7. The polyester film sampling assembly structure according to claim 6, characterized in that, An elastic element is sleeved between the end face of the fixed end and the top surface of the support frame. The elastic element has compressive deformation or tensile deformation along the length direction of the movable connecting rod.

8. The polyester film sampling assembly structure according to claim 5, characterized in that, The base is provided with a guide extending along a first direction, and the support frame is in concave-convex cooperation with the guide and reciprocates along it.

9. The polyester film sampling assembly structure according to claim 8, characterized in that, A limiting member is provided between the bottom surface of the sampling pad and the base, and the first direction is consistent with the extension direction of a set of opposite sides of the sampling pad.

10. The polyester film sampling assembly structure according to claim 5, characterized in that, Both the tool holder and the pressure plate are made of transparent plastic.

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