A sampler and detection method for detecting the wet tensile force of a fiber film

Abstract

The application discloses a sampler for wet state tension detection of fiber film, which is used in cooperation with a tension machine and comprises clamping parts for cooperation with clamps at two ends of the tension machine and a limiting part connected with the clamping parts, wherein the clamping parts are adjustably arranged on the limiting part. The application has the advantages that the clamping parts are used to realize complete unfolding and wetting of the fiber film to be detected, realize pre-clamping before tension detection, then the position of the clamping parts on the limiting part is adjusted, the clamping parts are directly clamped to the clamps of the tension machine, and then the limiting part is removed. Compared with the existing mode that the fiber film to be detected is directly installed on the tension machine, the installation of the drawing board on the clamps of the tension machine is facilitated, the drawing board paper, i.e. the fiber film to be detected, in a completely wet state can be quickly and accurately installed on the clamps of the tension machine, the placement position can be adjusted, the fiber film is not prone to breakage, the detection data is closer to the true value, and the detection precision and efficiency are improved.

Description

A sampler and testing method for wet tensile testing of fiber films. Technical Field

[0001] This invention relates to the field of tensile testing sampler technology, and in particular to a sampler and testing method for wet tensile testing of fiber films. Background Technology

[0002] The quality of lead-acid battery plates directly impacts battery quality. During the plate casting process, coated paper is used to adhere to both sides of the plates to prevent them from stacking and sticking together. This also protects the plates during transportation and dissolves in the electrolyte during the plate formation process, ensuring the lead-acid battery remains in a normal state. Testing the wet longitudinal and transverse tensile strength of the coated paper is a crucial indicator of its quality. Tensile testing of fiber film coated paper typically employs two clamps for opposing tension. For example, Chinese patent document CN 2022222129147, authorized on March 24, 2023, describes a tensile testing device. This application includes a testing machine body, a first clamping mechanism, and a second clamping mechanism. The first and second clamping mechanisms are arranged parallel to each other on the testing machine body and are driven by a drive mechanism to clamp and release, achieving the clamping tensile strength test of the film. Currently, wet tensile testing of coated paper for lead-acid batteries is performed using an XH-018A electronic separator tensile testing machine or a tensile module of a computer-controlled electronic universal testing machine. These instruments have two steel clamps, one above the other. Sampling is done by tweezers or by hand, directly grasping the sample in water and then fixing it vertically in the center of the clamps before testing with the tensile module. This method is prone to problems such as fiber breakage, fiber adhesion leading to difficulty in separation, difficulty in adjusting the placement, and excessively long operation time causing moisture loss in the coated paper, all of which affect the test results. Therefore, a method and sampler for wet tensile testing of fiber films are needed to facilitate the installation of the paperboard on the tensile testing machine clamps, improve installation efficiency, and enable the fully wetted coated paper to be quickly and accurately installed on the clamps, resulting in test data closer to the true values. Summary of the Invention

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a sampler and testing method for wet tensile testing of fiber films, which enables the coated paper, i.e. the fiber film to be tested, in a fully wetted state to be quickly and accurately installed on the tensile testing machine fixture, so that the test data is closer to the true value.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A sampler for wet tensile testing of fiber films, used in conjunction with a tensile testing machine, includes a clamping part for cooperating with clamps at both ends of the tensile testing machine and a limiting part connected to the clamping part, wherein the clamping part is adjustablely set on the limiting part.

[0006] The clamping part allows for the complete unfolding and wetting of the fiber film to be tested, enabling pre-clamping before tensile testing. After adjusting the position of the clamping part on the limiting part, the clamping part is directly clamped onto the tensile testing machine's fixture, and then the limiting part is removed. Compared to the existing method of directly installing the fiber film to be tested onto the tensile testing machine, this method facilitates the installation of the drawing board on the tensile testing machine's fixture. It enables the fully wetted coated paper, i.e., the fiber film to be tested, to be quickly and accurately installed on the tensile testing machine's fixture. The placement position can be adjusted, the film fibers are less prone to breakage, and the test data is closer to the true value, improving the testing accuracy and efficiency.

[0007] Preferably, the clamping part includes a connecting section connected to the limiting part and a hook located at the outer end of the connecting section. The hook includes a positioning rod coaxial with or parallel to the connecting section and a clamping rod parallel to the positioning rod. An arc segment connects the positioning rod and the clamping rod. The positioning rod and the clamping rod cooperate to achieve pre-loading of the fiber film to be tested. The pre-loading effect is reliable. Since the positioning rod and the clamping rod are parallel and have no sharp protrusions, it can avoid puncturing the fiber film and ensure the reliability of the fiber film tensile test.

[0008] Preferably, the positioning rod and the clamping rod are fitted together, reliably achieving the clamping and limiting of the fiber film to be tested.

[0009] Preferably, the limiting part includes a limiting plate with a limiting groove inside. The connecting section is slidably disposed within the limiting groove, and a locking component that cooperates with the limiting plate is provided on the connecting section. The connecting section can slide within the limiting groove, realizing position adjustment of the connecting section. After the position is adjusted to the correct position, the locking component can lock the connecting section and the limiting plate, making the operation convenient and reliable.

[0010] Preferably, the side of the limiting plate corresponding to the limiting groove is provided with a scale. The scale allows for a direct visual indication of the distance between the two clamping parts, facilitating the subsequent alignment and engagement of the clamping parts with the tensile testing machine fixture.

[0011] Preferably, the lateral dimension of the connecting section is larger than the lateral dimension of the positioning rod. The length of the positioning rod between the positioning rod and the connecting section is larger than the width of the fiber film to be tested. The length of the clamping rod is between 2 / 3 and 8 / 9 of the width of the limiting film to be tested. The length of the clamping rod is shorter than the length of the positioning rod, creating a gap between the clamping rod and the positioning rod, which facilitates the pre-installation of the fiber film to be tested between the clamping rod and the positioning rod.

[0012] Preferably, the locking component uses a locking bolt, and the connecting section is provided with a limiting ring that abuts against the side wall of the limiting slide groove. The locking bolt is threadedly connected to the connecting section, and the nut of the locking bolt abuts against and presses against the limiting plate. When the connecting section and the locking bolt are threadedly locked, the limiting ring and the nut of the locking bolt reliably lock the clamping part and the limiting part, and the locking function of the locking component is reliable.

[0013] Preferably, one end of the connecting section that mates with the limiting groove has two parallel limiting surfaces. The limiting surfaces correspond to the groove wall of the limiting groove and are perpendicular to the plane formed by the positioning rod and the clamping rod. The limiting surfaces prevent the connecting section from rotating within the limiting groove, ensuring that after the clamping part is installed into the limiting part, the clamping area formed by the positioning rod and the clamping rod is vertically aligned, allowing the positioning rod and the clamping rod to reliably lock together with the included angle of the tensile testing machine.

[0014] Preferably, the limiting part includes a limiting plate with a limiting groove inside. A locking bolt is slidably disposed within the limiting groove, and the clamping part has a threaded hole for engaging the locking bolt. The locking bolt is a rotating component that is limited within the limiting groove. When the clamping part and the locking bolt are engaged, the clamping of the clamping part and the limiting plate locks the position of the clamping part, preventing the locking bolt from slipping out and facilitating its reuse.

[0015] A detection method based on the above-mentioned sampler for wet tensile testing of fiber films includes the following steps:

[0016] A. Two clamping parts are installed on the limiting part. The positions of the two clamping parts on the limiting part are adjusted according to the test requirements.

[0017] B. Hold the middle position of the limiting part with one hand, operate the clamping part to clamp the two ends of the fiber film to be tested, and the fiber film to be tested is fully unfolded and wetted.

[0018] C. Clamp the clamping parts at both ends of the limiting part into the upper and lower clamps of the tensile testing machine respectively;

[0019] D. Loosen the clamping part and the limiting part, remove the limiting part, and open the tensile testing module software to perform the test;

[0020] E. After the test, loosen the upper and lower clamps of the tensile testing machine, remove the clamping part, clean the remaining broken fiber film on the clamping part, and the measurement is completed.

[0021] It enables rapid and reliable clamping of the fiber film to be tested, and, in conjunction with a tensile testing machine or tensile testing module, enables reliable tensile testing of the fiber film to be tested.

[0022] The beneficial effects of this invention are: it facilitates the installation of the drawing board on the tensile testing machine fixture, enables the fully wet coated paper, i.e. the fiber film to be tested, to be quickly and accurately installed on the tensile testing machine fixture, the placement position can be adjusted, the film fibers are not easily broken, the test data is closer to the true value, and the test accuracy and efficiency are improved. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of the present invention in application.

[0024] Figure 2 is a schematic diagram of the structure of the first embodiment of the present invention.

[0025] Figure 3 is a schematic diagram of the structure of the limiting plate in a transverse cross-section of the embodiment shown in Figure 2.

[0026] Figure 4 is a schematic diagram of the side structure of the clamping part in the embodiment shown in Figure 2.

[0027] Figure 5 is a structural schematic diagram of the second embodiment of the present invention.

[0028] In the figure: Sampler 1, Clamping part 10, Connecting section 101, Positioning rod 102, Clamping rod 103, Arc section 104, Limiting plate 11, Limiting slide 111, Scale 112, Locking bolt 113, Limiting surface 114, Limiting ring 115, Limiting rod 116, Crossbar 117, Tensile testing machine 2, Fiber film to be tested 3. Detailed Implementation

[0029] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] As shown in Figures 1 to 4, a sampler for wet tensile testing of fiber films is used in conjunction with a tensile testing machine 2. The tensile testing machine 2 is an XH-018A electronic partition tensile testing machine. The sampler 1 includes a clamping part 10 for cooperating with the clamps at both ends of the tensile testing machine and a limiting part connecting the clamping part 10. The clamping part 10 is adjustablely set on the limiting part. The clamping part 10 includes a connecting section 101 connected to the limiting part and a hook part located at the outer end of the connecting section 101. The hook part includes a positioning rod 102 coaxial with the connecting section 101 and a clamping rod 103 parallel to the positioning rod 102. The positioning rod 102 and the clamping rod 103 are fitted together. An arc segment 104 is provided between the positioning rod 102 and the clamping rod 103. The arc segment 104 is located at the outer end of the clamping rod 103 and the positioning rod 102. The limiting part includes a limiting plate 11, within which a limiting groove 111 is provided. A scale 112 is provided on the sides of the limiting plate 11 corresponding to the sides of the groove wall of the limiting groove 111. A connecting section 101 is slidably disposed within the limiting groove 111, and a locking component that cooperates with the limiting plate 11 is provided on the connecting section 101. The locking component is a locking bolt 113. Two parallel limiting surfaces 114 are provided on one end of the connecting section 101 that cooperate with the limiting groove 111. The limiting surfaces 114 correspond to the groove wall of the limiting groove 111 and are perpendicular to the plane formed by the positioning rod 102 and the clamping rod 103. A limiting ring 115 is provided on the connecting section 101 that abuts against the side wall of the cooperating limiting groove 111. The limiting ring 115 is located at the lower edge of the limiting surface 114. The height of the limiting surface 114 is less than the groove depth of the limiting groove 111. The locking bolt 113 is threadedly connected to the connecting section 101, and the nut of the locking bolt 113 abuts against and presses against the limiting plate 11. The locking bolt 113 is a wing bolt for easy operation. The lateral dimension of the connecting section 101 is larger than the lateral dimension of the positioning rod 102, and the connecting section 101 and the positioning rod 102 are connected by a frustum. The length dimension of the positioning rod 102 is larger than the width dimension of the fiber film 3 to be tested, and the length dimension of the positioning rod 102 is 1.1 times that of the fiber film 3 to be tested. The length dimension of the clamping rod 103 is 4 / 5 of the width dimension of the fiber film 3 to be tested.

[0032] Example 2,

[0033] A sampler for wet tensile testing of fiber films, as shown in Figure 5, includes a clamping part for engaging with clamps at both ends of a tensile tester and a limiting part connecting the clamping part. The clamping part is adjustablely mounted on the limiting part. The clamping part includes a connecting section 101 connected to the limiting part and a hook located at the outer end of the connecting section 101. The hook includes a positioning rod 102 coaxial with the connecting section 101 and a clamping rod 103 parallel to the positioning rod 102. The positioning rod 102 and the clamping rod 103 are fitted together. An arc segment 104 connects the positioning rod 102 and the clamping rod 103. The arc segment 104 is located at the end of the clamping rod 103 facing the connecting section 101. The distance from the outer end of the positioning rod 102 to the arc segment 104 is 1.12 times the length of the clamping rod 103. The limiting part includes a limiting plate 11, which has a limiting groove 111. The limiting plate 11 has scales on its sides corresponding to the groove walls. A locking bolt 113 slides within the limiting groove 111. Two parallel limiting rods 116 are provided on each side of the groove wall. The nut of the locking bolt 113 is located between the limiting rods 116, preventing the locking bolt 113 from dislodging. The clamping part 10 has a threaded hole that mates with the locking bolt 113. A crossbar 117 is provided at the outer end of the nut of the locking bolt 113, allowing direct operation of the locking bolt 113 and improving ease of operation. The outer circumference of the nut of the locking bolt 113 is cylindrical, facilitating rotation of the locking bolt 113 within the limiting groove 111. The crossbar 117 is coaxially fixedly connected to the nut of the locking bolt 113 via a vertical rod at its end.

[0034] The connecting section 101 has two parallel limiting surfaces 114 at one end of the limiting groove 111. The limiting surfaces 114 correspond to the groove wall of the limiting groove 111 and are perpendicular to the plane formed by the positioning rod 102 and the clamping rod 103. The locking bolt 113 is threaded to the connecting section 101, and the nut of the locking bolt 113 abuts against and presses against the limiting plate 11. The lateral dimension of the connecting section 101 is larger than the lateral dimension of the positioning rod 102, and the connecting section 101 and the positioning rod 102 are connected by a frustum. The length dimension of the positioning rod 102 is larger than the width dimension of the fiber film to be tested, and the length dimension of the positioning rod 102 is 1.1 times that of the fiber film to be tested. The length dimension of the clamping rod 103 is 9 / 10 of the width dimension of the fiber film to be tested.

[0035] Example 3,

[0036] A detection method based on the above-mentioned sampler for wet tensile testing of fiber films includes the following steps:

[0037] A. Two clamping parts 10 are installed on the limiting part. According to the test requirements, the positions of the two clamping parts 10 on the limiting part are adjusted. The connecting section 101 after loosening the locking bolt 113 is adjusted by the guide sliding of the limiting slide groove 111. According to the scale prompt, when the connecting section 101 reaches the required position, the locking bolt 113 is tightened to complete the locking and limiting of the clamping part 10 on the limiting plate 11.

[0038] B. Hold the middle position of the limiting part with one hand, operate the clamping part 10 so that the clamping part 10 clamps both ends of the fiber film 3 to be tested, and the fiber film 3 to be tested is fully unfolded and wetted; the clamping part 10 is connected to the fiber film 3 to be tested by the notch formed between the clamping rod 103 and the positioning rod 102 due to the difference in length, and the unfolding of the fiber film 3 to be tested is completed.

[0039] C. Clamp the clamping parts 10 at both ends of the limiting part into the upper and lower clamps of the tensile testing machine 2 respectively;

[0040] D. Loosen the clamping part 10 and the limiting part, remove the limiting part, and open the tensile testing machine 2 module software to perform the test; loosen the locking bolt 113 so that the locking bolt 113 and the connecting section 101 are separated, and remove the locking bolt 113 and the limiting plate 11 as a whole. At this time, the clamping part 10 can move together with the upper or lower clamp to complete the tensile test of the fiber film 3 to be tested.

[0041] E. After the test, loosen the upper and lower clamps of the tensile testing machine 2, remove the clamping part 10, clean the remaining broken fiber film 3 on the clamping part 10, and complete the measurement.

[0042] The technical solution disclosed in this application can facilitate the installation of the drawing paper on the tensile testing machine 2 fixture, and can quickly and accurately install the fully wet coated paper, i.e. the fiber film 3 to be tested, on the tensile testing machine 2 fixture. The placement position can be adjusted, the film fiber is not easy to break, and the test data is closer to the true value, improving the detection accuracy and detection efficiency of tensile testing, and ultimately achieving reliable protection and anti-adhesion of lead-acid battery plates.

Claims

1. A method for detecting the wet tensile strength of a fiber film, characterized in that, A sampler used with a tensile testing machine includes a clamping part for engaging with the clamps at both ends of the tensile testing machine and a limiting part connecting the clamping part. The clamping part is adjustable on the limiting part. The clamping part includes a connecting section connected to the limiting part and a hook part located at the outer end of the connecting section. The hook part includes a positioning rod coaxial with or parallel to the connecting section and a clamping rod parallel to the positioning rod. An arc segment connects the positioning rod and the clamping rod. The positioning rod and the clamping rod are fitted together. The limiting part includes a limiting plate with a limiting groove inside. The following steps are also included: A. Two clamping parts are installed on the limiting part, and the positions of the two clamping parts on the limiting part are adjusted according to the test requirements; B. Hold the middle position of the limiting part with one hand, and operate the clamping part so that the clamping part clamps the two ends of the fiber film to be tested, and the fiber film to be tested is fully unfolded and wetted. C. Clamp the clamping parts at both ends of the limiting part into the upper and lower clamps of the tensile testing machine, respectively; D. Loosen the clamping parts and the limiting part, remove the limiting part, and open the tensile testing machine module software to perform the test; E. After the test, loosen the upper and lower clamps of the tensile testing machine, remove the clamping part, clean the remaining broken fiber film to be tested on the clamping part, and complete the measurement.

2. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, The connecting section is slidably positioned within the limiting groove, and the connecting section is equipped with a locking component that cooperates with the limiting plate.

3. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, The limiting plate is provided with a scale on the side corresponding to the limiting slide groove.

4. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, The lateral dimension of the connecting section is larger than that of the positioning rod, and a frustum is provided between the positioning rod and the connecting section.

5. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, The length of the positioning rod is greater than the width of the fiber film to be tested.

6. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, The length of the clamping rod is between 2 / 3 and 8 / 9 of the width of the limiting film to be measured.

7. The method for detecting the wet tensile strength of a fiber film according to claim 2, characterized in that, The locking component uses a locking bolt. The connecting section is provided with a limiting ring that abuts against the side wall of the limiting slide groove. The locking bolt is threadedly connected to the connecting section, and the nut of the locking bolt abuts against and presses against the limiting plate.

8. The method for detecting the wet tensile strength of a fiber film according to claim 2, characterized in that, The connecting section has two parallel limiting surfaces at one end that mates with the limiting slide groove. The limiting surfaces correspond to the groove wall of the limiting slide groove and are perpendicular to the plane formed by the positioning rod and the clamping rod.

9. The method for detecting the wet tensile strength of a fiber film according to claim 1, characterized in that, A locking bolt is slidably installed inside the limiting groove, and a threaded hole for matching the locking bolt is provided on the clamping part.

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