Device for testing viscosity strength of plastic film

Abstract

The utility model provides a device for testing the viscosity strength of a plastic film, which comprises a sample placing table with an inclined upper surface, a sample fixing shaft arranged at the lower end of the upper surface and a sample stretching device arranged at the upper end of the upper surface, and the sample stretching device is used for controlling the stretching length of a sample. The utility model has the beneficial effect that an operator can easily operate without highly professional skills. Through simplified operation steps, the possibility of misoperation is reduced, so that the test efficiency is improved. Therefore, strict requirements on accuracy in scientific research and production can be met, and powerful support is provided for improvement of product quality.

Description

Technical Field

[0001] The utility model relates to the field of plastic film detection equipment, in particular to a device for testing the viscosity strength of plastic films. Background Art

[0002] In the test of the adhesive properties of some plastic films, the test process of some samples is not simple and direct. According to the experimental requirements, these samples need to undergo a series of precise stretching treatments first. The process of sample stretching not only requires fine control, but also requires ensuring the uniformity and stability of the stretching to avoid adverse effects on the subsequent adhesive strength test. After the stretching is completed, the actual measurement of the adhesive strength can be carried out.

[0003] However, the common adhesive strength testing devices currently on the market often have many shortcomings. These devices are relatively complex to operate, requiring operators to have high professional skills, and the operating steps are cumbersome and prone to errors. In addition, the test accuracy of these devices is often unsatisfactory and it is difficult to meet the strict requirements for accuracy in scientific research and production. More importantly, the test process is easily disturbed by the external environment. Factors such as temperature, humidity, and vibration may have a significant impact on the test results.

[0004] These problems make the existing adhesive strength testing device unable to meet the actual needs of scientific research and production. In the actual testing process, operators often need to accurately evaluate the adhesive properties of plastic films to ensure the quality and performance of the product. However, due to the above defects, the existing testing devices are difficult to provide accurate and reliable test data, which brings great troubles to scientific research and production. Therefore, it is particularly important to develop an adhesive strength testing device that is easy to operate, has high test accuracy, and has strong anti-interference ability. Utility Model Content

[0005] Aiming at the shortcomings of the existing technology, the present invention solves the problems of the existing adhesive strength testing device, such as complicated operation, low testing accuracy and the testing process being easily disturbed by the outside world;

[0006] The utility model provides a device for testing the viscosity strength of plastic films, comprising a sample placing table with an inclined upper surface, a sample fixing shaft arranged at the lower end of the upper surface and a sample stretching device arranged at the upper end of the upper surface, wherein the sample stretching device controls the stretching length of the sample.

[0007] Furthermore, the sample placement platform includes a base and a sample placement mechanism disposed on the upper end of the base, and one end of the sample placement mechanism is rotatably connected to the base.

[0008] Furthermore, a locking screw is disposed at the lower portion of the sample placement mechanism, and a locking block used in conjunction with the locking screw is disposed on the base, and the locking screw is turned to lock the sample placement mechanism.

[0009] Furthermore, the sample stretching device includes two rotary arms and a sample fixing shaft respectively arranged on both sides of the sample placement platform, the middle part of the rotary arm is rotatably connected to the sample placement platform, and both ends of the sample fixing shaft are rotatably arranged on the upper end of the rotary arm.

[0010] Furthermore, a plurality of positioning points are respectively arranged on both sides of the sample placement platform, and a positioning hole is arranged at the lower end of the rotary arm to cooperate with the positioning points for multi-angle fixation.

[0011] Furthermore, a fixed shaft installation hole is provided at the lower portion of the sample placement mechanism, and a sample fixed shaft is rotatably arranged in the fixed shaft installation hole.

[0012] As a preferred solution, the sample fixing shaft is provided with a sample penetration hole for fixing the plastic film.

[0013] As a preferred embodiment, the fixed shaft mounting hole includes an upper circular hole and a lower through groove which are interconnected, the width of the through groove is smaller than the diameter of the circular hole, and the cross-sections at both ends of the sample fixing shaft are quadrilaterals, wherein the distance between two opposite sides is smaller than the width of the through groove, and the distance between the other two opposite sides is greater than the width of the through groove and smaller than the diameter of the circular hole.

[0014] The method of using the utility model is:

[0015] When clamping the sample, unscrew the locking screw from the locking block, lift up the sample placement mechanism, and after reaching the limit position, rotate the sample fixing shaft and remove the sample fixing shaft from the fixing shaft installation hole.

[0016] Pass the sample through the sample hole and wrap it around the sample fixing shaft. Use the friction of the sample itself to lock the sample. Put the sample fixing shaft back into the sample fixing shaft installation hole, rotate the sample fixing shaft to a certain angle to ensure that the fixing shaft will not fall out of the installation hole. Lay the sample placement mechanism down and tighten the locking screw to completely lock the sample placement mechanism and the base.

[0017] After the sample placement mechanism is laid flat and locked, the remaining samples are passed through the sample hole on the sample fixing shaft installed on the rotary arm. After the sample passes through the sample hole, the sample fixing shaft is rotated in one direction. As the sample is continuously rolled up, the sample is stretched. After stretching to the required deformation, the rotary arm is rotated from the lower positioning point to the upper positioning point and the rotary arm is locked.

[0018] After the sample is fixed and stretched, take another section of the sample to be tested and lay it flat on the stretched sample to make it fit. Then, curl the sample to be tested from the upper end of the slope to the center line of the slope. Connect the other section of the sample to the force detection equipment. Under the action of the equipment, the sample to be tested is peeled off from the stretched sample, thereby detecting the adhesion of the sample.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model allows operators to easily get started without having highly professional skills. By simplifying the operating steps, the possibility of misoperation is reduced, thereby improving the test efficiency. This will help meet the strict requirements for accuracy in scientific research and production, and provide strong support for the improvement of product quality.

[0021] 2. The utility model can achieve uniform and stable stretching during the stretching process, avoiding uneven deformation or breakage of the sample during the stretching process. This will help reduce the error of the test results and improve the reliability of the data.

[0022] 3. The utility model has wide adaptability and can be applied to plastic film samples of different types and specifications, which will make the device have broad application prospects in scientific research, production and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is a structural schematic diagram of the sample placement mechanism of the utility model in the open state.

[0026] Figure 3 Schematic diagram of inserting the specimen fixing shaft into the fixing shaft mounting hole.

[0027] Figure 4 Schematic diagram of locking the specimen fixing shaft into the fixing shaft mounting hole.

[0028] Figure 5 It is a schematic diagram of the use of the utility model.

[0029] Figure 6 It is a structural schematic diagram of the sample fixing shaft of the utility model.

[0030] Figure 7 The utility model is a schematic diagram of the locking structure of the locking screw and the locking block.

[0031] The reference numerals in the accompanying drawings are:

[0032] 1. Sample placement table; 11. Base; 12. Sample placement mechanism; 13. Locking screw; 14. Locking block; 15. Fixed shaft mounting hole; 151. Round hole; 152. Through slot; 2. Sample fixing shaft; 21. Sample hole; 3. Sample stretching device; 31. Swivel arm; 32. Positioning hole. DETAILED DESCRIPTION

[0033] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0034] Example:

[0035] refer to Figures 1 to 7 The present embodiment provides a device for testing the adhesive strength of a plastic film, including a sample placement table 1 with an inclined upper surface, including a base 11 and a sample placement mechanism 12 arranged at the upper end of the base 11, one end of the sample placement mechanism 12 is rotatably connected to the base 11, a locking screw 13 is arranged at the lower part of the sample placement mechanism 12, and a locking block 14 used in conjunction with the locking screw is arranged at the base 11, and the locking screw 13 is screwed to lock the sample placement mechanism 12, and a fixed shaft mounting hole 15 is provided at the lower part of the sample placement mechanism 12, and a sample fixing shaft 2 is rotatably arranged in the fixed shaft mounting hole 15.

[0036] In this embodiment, a sample fixing shaft 2 at the lower end of the upper surface and a sample stretching device 3 at the upper end of the upper surface are respectively arranged at the upper and lower ends of the sample placement platform 1, wherein the sample stretching device 3 comprises two rotary arms 31 and a sample fixing shaft 2 respectively arranged at both sides of the sample placement platform, the middle part of the rotary arm 31 is rotatably connected with the sample placement platform 1, and the two ends of the sample fixing shaft 2 are rotatably arranged at the upper ends of the rotary arm 31. The sample stretching device 3 has two stretching positions, specifically, by respectively arranging two positioning points 16 at both sides of the sample placement platform 1, and arranging a positioning hole 32 at the lower end of the rotary arm 31 to cooperate with the positioning point 16 to fix at two different angles, so as to achieve the stretching of the fixed sample to different lengths.

[0037] In order to improve the fixing effect of the sample in this embodiment, a sample hole 21 for fixing the plastic film is provided in the sample fixing shaft 2. The fixing shaft mounting hole 15 includes an upper circular hole 151 and a lower through groove 152 which are interconnected. The width of the through groove 152 is smaller than the diameter of the circular hole 151. The cross-sections at both ends of the sample fixing shaft 2 are quadrilaterals, wherein the distance between two opposite sides is smaller than the width of the through groove 152, and the distance between the other two opposite sides is greater than the width of the through groove 152 and less than the diameter of the circular hole 151. After the cross-section of the sample fixing shaft 2 is vertically placed in the fixing shaft mounting hole 15, it can be rotated 90 degrees to achieve the limit.

[0038] The method of using this embodiment is:

[0039] When clamping the sample, the locking screw 13 is unscrewed from the locking block 14, and the sample placement mechanism 12 is lifted up. After reaching the limit position, the sample fixing shaft 2 is rotated to remove the sample fixing shaft 2 from the fixing shaft installation hole 15.

[0040] The sample is passed through the sample hole 21 and wrapped around the sample fixing shaft 2. The friction of the sample itself is used to lock the sample. After the sample fixing shaft 2 is put back into the fixing shaft mounting hole 15, the sample fixing shaft 2 is rotated by a certain angle to ensure that the sample fixing shaft 2 does not fall out of the fixing shaft mounting hole 15. The sample placement mechanism 12 is laid down and the locking screw 13 is tightened to completely lock and fix the sample placement mechanism 12 and the base 11.

[0041] After the sample placement mechanism 12 is laid flat and locked, the remaining sample is passed through the sample hole 21 on the sample fixing shaft 2 installed on the rotary arm 31. After the sample passes through the sample hole 21, the sample fixing shaft 2 is rotated in one direction. As the sample is continuously rolled up, the sample is stretched. After the sample is stretched to the required deformation amount, the rotary arm 31 is rotated from the lower positioning point 16 to the upper positioning point 16, and the rotary arm 31 is locked.

[0042] After the sample is fixed and stretched, take another section of the sample to be tested and lay it flat on the stretched sample to make it fit. Then, curl the sample to be tested from the upper end of the slope to the center line of the slope. Connect the other section of the sample to the force detection equipment. Under the action of the equipment, the sample to be tested is peeled off from the stretched sample, thereby detecting the adhesion of the sample.

[0043] This device allows operators to easily use it without having highly professional skills. By simplifying the operating steps, the possibility of misoperation is reduced, thereby improving test efficiency. This will help meet the strict requirements for accuracy in scientific research and production, and provide strong support for improving product quality.

[0044] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. A device for testing the adhesive strength of plastic films, characterized in that: It comprises a sample placement table (1) with an inclined upper surface, a sample fixing shaft (2) arranged at the lower end of the upper surface, and a sample stretching device (3) arranged at the upper end of the upper surface, wherein the sample stretching device (3) controls the stretching length of the sample.

2. The device for testing the adhesive strength of plastic films according to claim 1, characterized in that: The sample placement platform (1) comprises a base (11) and a sample placement mechanism (12) arranged at the upper end of the base (11); one end of the sample placement mechanism (12) is rotatably connected to the base (11).

3. The device for testing the adhesive strength of plastic films according to claim 2, characterized in that: A locking screw (13) is disposed at the lower portion of the sample placement mechanism (12), and a locking block (14) used in conjunction with the locking screw is disposed on the base (11), and the sample placement mechanism (12) is locked by turning the locking screw (13).

4. The device for testing the adhesive strength of plastic films according to claim 1, characterized in that: The sample stretching device (3) comprises two rotary arms (31) respectively arranged on both sides of the sample placement platform and a sample fixing shaft (2).

5. The device for testing the adhesive strength of plastic films according to claim 4, characterized in that: The middle portion of the rotary arm (31) is rotatably connected to the sample placement platform (1), and both ends of the sample fixing shaft (2) are rotatably arranged on the upper end of the rotary arm (31).

6. The device for testing the adhesive strength of plastic films according to claim 5, characterized in that: A plurality of positioning points (16) are respectively arranged on both sides of the sample placement platform (1), and a positioning hole (32) is arranged at the lower end of the rotary arm (31) to cooperate with the positioning points (16) for multi-angle fixation.

7. The device for testing the adhesive strength of plastic films according to claim 2, characterized in that: A fixed shaft mounting hole (15) is provided at the lower portion of the sample placement mechanism (12), and a sample fixed shaft (2) is rotatably mounted in the fixed shaft mounting hole (15).

8. The device for testing the adhesive strength of plastic films according to claim 1, characterized in that: The sample fixing shaft (2) is provided with a sample penetration hole (21) for fixing the plastic film.

9. The device for testing the adhesive strength of plastic films according to claim 7, characterized in that: The fixed shaft mounting hole (15) comprises an upper circular hole (151) and a lower through groove (152) which are interconnected, the width of the through groove (152) being smaller than the diameter of the circular hole (151), and the cross-sections of the two ends of the sample fixing shaft (2) are quadrilaterals, wherein the distance between two opposite sides is smaller than the width of the through groove (152), and the distance between the other two opposite sides is greater than the width of the through groove (152) and smaller than the diameter of the circular hole (151).

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