Measuring device for measuring warping degree of diaphragm and measuring method for warping degree of diaphragm

Abstract

The invention discloses a measuring device for measuring the warping degree of a diaphragm and a measuring method for the warping degree of the diaphragm, the measuring device comprises a seat body assembly, a cross beam assembly, a clamping assembly and a suspension falling assembly, the seat body assembly comprises a base and a vertical rod which are connected with each other; the cross beam assembly is connected with the vertical rod; the clamping assembly is connected with the cross beam assembly, and the clamping assembly is used for clamping the first end of the diaphragm; and the pendant assembly is used for clamping the second end of the diaphragm. The measuring device and the measuring method provided by the invention provide an effective means for the quantification of the diaphragm warping degree which is a non-scalar quantity, and provide data support for the standardization of diaphragm processing.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a measuring device for measuring the warpage of a diaphragm and a measuring method for the warpage of the diaphragm. Background Art

[0002] Diaphragm is an important component of the battery, and its raw materials are usually supplied in the form of diaphragm strips. During the diaphragm processing, there is a risk of warping due to uneven heating, process settings and other issues. The dimensional error caused by a small warp can be ignored after the diaphragm strip is cut, while excessive warping may cause risks such as winding of the production machine. That is, the warping of the diaphragm is an important parameter that needs to be monitored in industrial production.

[0003] However, because the diaphragm materials, widths, thicknesses and other data used in various industrial lines are all different, it is difficult to establish fixed standards for warpage. The control of diaphragm warpage often relies on the operator's experience and judgment. Summary of the invention

[0004] An object of the present invention is to provide a measuring device and a method for measuring the warpage of a diaphragm, which is intended to solve the technical problem that the degree of warpage is difficult to quantify during the processing of the diaphragm.

[0005] To achieve the above object, the present invention provides a solution: a measuring device for measuring the warpage of a diaphragm. The diaphragm is defined as having a first end and a second end in its length direction, the first end having a first left test point and a first right test point in the width direction of the diaphragm, the second end having a second left test point and a second right test point in the width direction of the diaphragm, the connection direction of the first left test point and the second left test point is the same as the length direction of the diaphragm, and the connection direction of the first right test point and the second right test point is the same as the length direction of the diaphragm. The measuring device includes a seat assembly, a beam assembly, a clamping assembly, and a pendant assembly.

[0006] Specifically, the seat assembly includes a base and a vertical rod connected to each other; a crossbeam assembly connected to the vertical rod; a clamping assembly connected to the crossbeam assembly, the clamping assembly is used to clamp the first end of the diaphragm; and a pendant assembly is used to clamp the second end of the diaphragm. When the clamping assembly clamps the first left test point and the pendant assembly clamps the second left test point, the distance between the first left test point and the second left test point is L1, and when the clamping assembly clamps the first right test point and the pendant assembly clamps the second right test point, the distance between the first right test point and the second right test point is L2.

[0007] In some embodiments, the beam assembly includes a cross bar, a first ring sleeve and a first bolt. The first ring sleeve is arranged at one end of the cross bar. The vertical pole is inserted into the first ring sleeve and is slidably connected to the first ring sleeve. A first threaded hole is opened on the first ring sleeve. The first bolt passes through the first threaded hole and abuts against the vertical pole to fix the relative position of the first ring sleeve and the vertical pole.

[0008] In some embodiments, the seat assembly further includes a first limit member, which is protruding from an end of the vertical rod away from the base and is used to limit the movement of the first ring sleeve between the first limit member and the base.

[0009] In some embodiments, the clamping assembly includes a first clamping jaw and a connecting rod, one end of the connecting rod is connected to the beam assembly, and the other end of the connecting rod is connected to the first clamping jaw, and the first clamping jaw is used to clamp the first end of the diaphragm.

[0010] In some embodiments, the clamping assembly also includes a second ring sleeve and a second bolt, the second ring sleeve is connected to the end of the connecting rod away from the first clamping jaw, the connecting rod is slidably connected to the cross bar through the second ring sleeve, a second threaded hole is opened on the second ring sleeve, the second bolt passes through the second threaded hole and abuts against the cross bar, which is used to fix the relative position of the second ring sleeve and the cross bar, and the beam assembly also includes a second limit member, the second limit member is protruding from the end of the cross bar away from the first ring sleeve, and is used to limit the movement of the second ring sleeve between the second limit member and the first ring sleeve.

[0011] In some embodiments, the first clamp includes a first block, a second block and a first connecting bolt, the first block and the second block are used to clamp the first end of the diaphragm, the first block is connected to the connecting rod, a first hole is opened on the first block along the length direction of the diaphragm, and a second hole is opened on the second block along the length direction of the diaphragm. The first connecting bolt passes through the first hole and the second hole to fix the first block and the second block.

[0012] In some embodiments, the pendant assembly includes a second clamp, a hanging ring and a hanging weight, the hanging ring is connected to the second clamp, the hanging weight is hung on the hanging ring, and the clamp is used to clamp the second end of the diaphragm; the second clamp includes a third block, a fourth block and a second connecting bolt, the third block and the fourth block are used to clamp the second end of the diaphragm, the third block is connected to the hanging ring, a third hole is opened on the third block along the length direction of the diaphragm, a fourth hole is opened on the fourth block along the length direction of the diaphragm, and the second connecting bolt passes through the third hole and the fourth hole to fix the third block and the fourth block.

[0013] In some embodiments, the clamping assembly also includes a first clamping rod, and the first clamping jaw clamps the first clamping rod; the first clamping rod includes a first rod body, a second rod body and a first gasket, the first rod body and the second rod body are used to clamp the first end of the diaphragm, the first gasket is padded on the side of the first rod body facing the second rod body, and the first gasket is padded on the side of the second rod body facing the first rod body.

[0014] In some embodiments, the pendant assembly also includes a second clamping rod, and the second clamping jaw clamps the second clamping rod; the second clamping rod includes a third rod body, a fourth rod body and a second gasket, the third rod body and the fourth rod body are used to clamp the second end of the diaphragm, the second gasket is padded on the side of the third rod body facing the fourth rod body, and the second gasket is padded on the side of the fourth rod body facing the third rod body.

[0015] To achieve the above object, another solution provided by the present invention is: a method for measuring the warpage of a diaphragm, the measuring method is measured by any of the measuring devices described above, and the measuring method comprises the following steps:

[0016] Cut the diaphragm to be measured; use the clamping assembly to clamp the first left test point, and the pendant assembly to clamp the second left test point; measure the distance L1 between the first left test point and the second left test point; use the clamping assembly to clamp the first right test point, and the pendant assembly to clamp the second right test point; measure the distance L2 between the first right test point and the second right test point; calculate the length difference between L1 and L2.

[0017] The beneficial effects of the present invention are:

[0018] The measuring device for measuring the warpage of the diaphragm provided by the present invention can quantify the degree of warpage of the diaphragm. Specifically, the diaphragms of fixed length are regularly inspected on the production line. Since the length, width, thickness and material of the diaphragm are all constant at this time, the absolute value of the measured length difference L1-L2 is positively correlated with the degree of warpage of the diaphragm.

[0019] The measuring device and the measuring method provided by the present invention provide an effective means for quantifying the non-scalar quantity of diaphragm warpage, and provide data support for the standardization of diaphragm processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of the overall structure of a testing device provided by an embodiment of the present invention;

[0022] Figure 2 is a front view of a testing device provided by an embodiment of the present invention;

[0023] Figure 3 yes Figure 1 A partial enlarged view of the middle A area;

[0024] Figure 4yes Figure 1 A partial enlarged view of the middle B area;

[0025] Figure 5 is along Figure 4 Schematic diagram of the cross section along the CC line;

[0026] Figure 6 yes Figure 1 A partial enlarged view of the D area in the middle;

[0027] Figure 7 yes Figure 1 A partial enlarged view of the middle E area;

[0028] Figure 8 is along Figure 7 Schematic diagram of the cross section of the FF line.

[0029] Description of Figure Numbers:

[0030] 00, diaphragm; 01, first end; 011, first left test point; 012, first right test point; 02, second end; 021, second left test point; 022, second right test point; 10, seat assembly; 11, base; 12, vertical rod; 13, first stopper; 20, crossbeam assembly; 21, crossbar; 22, first ring; 221, first threaded hole; 23, first bolt; 24, second stopper; 30, clamping assembly; 31, first clamping jaw; 311, first block; 3111, first hole; 312, second block; 3121, The second hole; 313, the first connecting bolt; 32, the connecting rod; 33, the second ring; 331, the second threaded hole; 34, the second bolt; 35, the first clamping rod; 351, the first stick body; 352, the second stick body; 353, the first gasket; 40, the pendant assembly; 41, the second clamping jaw; 411, the third block; 4111, the third hole; 412, the fourth block; 4121, the fourth hole; 413, the second connecting bolt; 42, the lifting ring; 43, the hanging weight; 44, the second clamping rod; 441, the third stick body; 442, the fourth stick body; 443, the second gasket. DETAILED DESCRIPTION

[0031] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 to Figure 2 As shown, Figure 1 is a schematic diagram of the overall structure of a testing device provided by an embodiment of the present invention; Figure 2It is a front view of the testing device provided by the embodiment of the present invention.

[0033] In order to solve the technical problem that the warpage of the diaphragm 00 is difficult to quantify during the processing of the diaphragm 00, the present invention discloses a measuring device for measuring the warpage of the diaphragm 00.

[0034] It is defined that the diaphragm 00 has a first end 01 and a second end 02 in its length direction, the first end 01 has a first left test point 011 and a first right test point 012 in the width direction of the diaphragm 00, the second end 02 has a second left test point 021 and a second right test point 022 in the width direction of the diaphragm 00, the connecting direction of the first left test point 011 and the second left test point 021 is the same as the length direction of the diaphragm 00, and the connecting direction of the first right test point 012 and the second right test point 022 is the same as the length direction of the diaphragm 00. It should be pointed out that the definition of the diaphragm 00 here does not limit the application scope of the measuring device of the present invention. In fact, a segment for measurement is cut from a diaphragm 00 strip of any material, thickness and width. The diaphragm 00 segment naturally has features such as a first end 01, a second end 02, a first left test point 011, a second left test point 021, a first right test point 012, and a second right test point 022. The definition here is only for illustrative purposes, and all subsequent embodiments shall follow the above definition and will not be repeated.

[0035] The measuring device comprises a seat assembly 10, a crossbeam assembly 20, a clamping assembly 30 and a pendant assembly 40. The seat assembly 10 comprises a base 11 and a vertical rod 12 connected to each other; the crossbeam assembly 20 is connected to the vertical rod 12; the clamping assembly 30 is connected to the crossbeam assembly 20, and the clamping assembly 30 is used to clamp the first end 01 of the diaphragm 00; the pendant assembly 40 is used to clamp the second end 02 of the diaphragm 00. When the clamping assembly 30 clamps the first left test point 011 and the pendant assembly 40 clamps the second left test point 021, the distance between the first left test point 011 and the second left test point 021 is L1, and when the clamping assembly 30 clamps the first right test point 012 and the pendant assembly 40 clamps the second right test point 022, the distance between the first right test point 012 and the second right test point 022 is L2.

[0036] In order to better describe the technical solution of this embodiment, the use method and application scenario of the test device are described here. The use method of the test device provided in this embodiment includes the following steps:

[0037] Cut off the diaphragm 00 to be tested.

[0038] The clamping assembly 30 is used to clamp the first left test point 011 of the diaphragm 00 to be tested, the pendant assembly 40 is used to clamp the second left test point 021 of the diaphragm 00 to be tested, and the pendant assembly 40 is suspended by the diaphragm 00. Accordingly, the diaphragm 00 between the first left test point 011 and the second left test point 021 is straightened under the traction of the pendant assembly 40 and the clamping assembly 30. L1 is measured.

[0039] The clamping assembly 30 is used to clamp the first right test point 012 of the diaphragm 00 to be tested, the pendant assembly 40 is used to clamp the second right test point 022 of the diaphragm 00 to be tested, and the pendant assembly 40 is suspended by the diaphragm 00. Accordingly, the diaphragm 00 between the first right test point 012 and the second right test point 022 is straightened under the traction of the pendant assembly 40 and the clamping assembly 30. L2 is measured.

[0040] The length difference between L1 and L2 is calculated. The larger the length difference between L1 and L2, the more serious the warping of the cut diaphragm 00 is.

[0041] During the above-mentioned use, the measuring device of this embodiment quantified the warping degree of the diaphragm 00, and the length difference between L1 and L2 was positively correlated with the warping amount, which provided a quantitative means for warping control in the industrial production process of the diaphragm 00 and was conducive to the improvement of automation.

[0042] It should be noted that, admittedly, the length difference measured by the above-mentioned measuring device is still a non-standard quantity and cannot be used universally in the industry. However, in a production line with fixed thickness, width, and material of the diaphragm 00, when the length of the diaphragm 00 intercepted in each measurement is constant, the relative change of the length difference between L1 and L2 is sufficient to guide production. For example, before starting a certain diaphragm 00 processing, the curling of the diaphragm 00 is artificially aggravated by manually controlling local heating or other means until the conveying state of the diaphragm 00 is significantly disturbed, and the diaphragm 00 of the corresponding section is intercepted and the critical length difference is measured. In subsequent production, as long as the real-time length difference of the diaphragm 00 is measured regularly and compared with the critical length difference, quantitative monitoring of the warping state of the diaphragm 00 can be achieved.

[0043] Please also read Figure 3 As shown, Figure 3 yes Figure 1 The partial enlarged view of the area A shows the matching relationship between the crossbeam assembly 20 and the vertical pole 12.

[0044] In some embodiments, the crossbeam assembly 20 includes a cross bar 21, a first ring sleeve 22 and a first bolt 23. The first ring sleeve 22 is arranged at one end of the cross bar 21. The vertical pole 12 is inserted into the first ring sleeve 22 and is slidably connected to the first ring sleeve 22. A first threaded hole 221 is opened on the first ring sleeve 22. The first bolt 23 passes through the first threaded hole 221 and abuts against the vertical pole 12, so as to fix the relative position of the first ring sleeve 22 and the vertical pole 12.

[0045] When the first bolt 23 is tightened and abuts against the vertical rod 12, the first ring 22 is fixed, and when the first bolt 23 leaves the vertical rod 12, the first ring 22 can move up and down relative to the vertical rod 12. The above arrangement allows the height of the beam assembly 20 to be adjusted according to the length of the diaphragm 00 to be measured, adapting to different measurement requirements.

[0046] Furthermore, the seat assembly 10 further includes a first limiter 13 , which is protruding from one end of the vertical rod 12 away from the base 11 and is used to limit the first ring sleeve 22 from moving between the first limiter 13 and the base 11 .

[0047] The first stopper 13 can be a flange around the upright 12, or a through hole can be provided on the upright 12 so that the first stopper 13 passes through the through hole. The first stopper 13 is provided as a foolproof structure to prevent the crossbeam assembly 20 from being over-adjusted.

[0048] Please refer to Figures 4 to 5 As shown, Figure 4 yes Figure 1 A partial enlarged view of the middle B area; Figure 5 is along Figure 4 The cross-sectional schematic diagram along the CC line shows the matching relationship between the clamping assembly 30 and the diaphragm 00.

[0049] In some embodiments, the clamping assembly 30 includes a first clamping jaw 31 and a connecting rod 32 , one end of the connecting rod 32 is connected to the beam assembly 20 , and the other end of the connecting rod 32 is connected to the first clamping jaw 31 , and the first clamping jaw 31 is used to clamp the first end 01 of the diaphragm 00 .

[0050] The provision of the first clamping jaw 31 facilitates the assembly of the diaphragm 00 and makes clamping and replacement faster.

[0051] Please refer to Figure 6 As shown, Figure 6 yes Figure 1 The partial enlarged view of the D area shows the connection relationship between the clamping assembly 30 and the beam assembly 20.

[0052] Furthermore, the clamping assembly 30 also includes a second ring sleeve 33 and a second bolt 34. The second ring sleeve 33 is connected to the end of the connecting rod 32 away from the first clamping jaw 31. The connecting rod 32 is slidably connected to the cross bar 21 through the second ring sleeve 33. A second threaded hole 331 is opened on the second ring sleeve 33. The second bolt 34 passes through the second threaded hole 331 and abuts against the cross bar 21 to fix the relative position of the second ring sleeve 33 and the cross bar 21. The beam assembly 20 also includes a second limit member 24. The second limit member 24 is protruding from the end of the cross bar 21 away from the first ring sleeve 22 to limit the second ring sleeve 33 from moving between the second limit member 24 and the first ring sleeve 22.

[0053] When the second bolt 34 is tightened and abuts against the crossbar 21, the second ring sleeve 33 is fixed. When the second bolt 34 leaves the crossbar 21, the second ring sleeve 33 can move relative to the crossbar 21, so that the clamping assembly 30 is close to or away from the vertical rod 12. The above arrangement allows the distance between the clamping assembly 30 and the vertical rod 12 to be adjusted according to the width of the diaphragm 00 to be measured, so as to adapt to different measurement requirements. The second limit member 24 can be a flange around the crossbar 21, or a through hole can be opened on the crossbar 21, so that the second limit member 24 passes through the through hole. The setting of the second limit member 24 as a foolproof structure avoids excessive adjustment of the support assembly.

[0054] Exemplarily, the first clamp 31 includes a first block 311, a second block 312 and a first connecting bolt 313. The first block 311 and the second block 312 are used to clamp the first end 01 of the diaphragm 00. The first block 311 is connected to the connecting rod 32. A first hole 3111 is opened on the first block 311 along the length direction of the diaphragm 00. A second hole 3121 is opened on the second block 312 along the length direction of the diaphragm 00. The first connecting bolt 313 passes through the first hole 3111 and the second hole 3121 to fix the first block 311 and the second block 312.

[0055] The axis of the first connecting bolt 313 is parallel to the length direction of the diaphragm 00 , so that the fixing of the first block 311 and the second block 312 by the first connecting bolt 313 will not affect the diaphragm 00 , thereby ensuring the accuracy of the measurement result.

[0056] Exemplarily, the clamping assembly 30 also includes a first clamping rod 35, and the first clamping jaw 31 clamps the first clamping rod 35; the first clamping rod 35 includes a first rod body 351, a second rod body 352 and a first gasket 353, the first rod body 351 and the second rod body 352 are used to clamp the first end 01 of the diaphragm 00, the first gasket 353 is padded on the side of the first rod body 351 facing the second rod body 352, and the first gasket 353 is padded on the side of the second rod body 352 facing the first rod body 351.

[0057] In actual production, the diaphragm 00 does not have a boundary between the first end 01 and the second end 02. This is due to the edge area caused by artificial cutting. Under local stress, deformation and other conditions may occur, affecting the measurement accuracy. The setting of the first clamping rod 35 allows the first end 01 of the diaphragm 00 to be stressed as a whole, avoiding pulling a certain measurement point to cause unevenness in the width direction of the diaphragm 00. The setting of the first gasket 353, on the one hand, avoids the surface of the diaphragm 00 being damaged by clamping, and on the other hand, the thickness or number of the first gasket 353 can be adjusted according to the thickness of the diaphragm 00, making the clamping more stable.

[0058] Please also read Figures 7 and 8 As shown, Figure 7 yes Figure 1 A partial enlarged view of the middle E area; Figure 8 is along Figure 7 The cross-sectional schematic diagram along the FF line shows the matching relationship between the pendant assembly 40 and the diaphragm 00.

[0059] In some embodiments, the pendant assembly 40 includes a second clamp 41, a hanging ring 42 and a hanging weight 43, the hanging ring 42 is connected to the second clamp 41, the hanging weight 43 is hung on the hanging ring 42, and the clamp is used to clamp the second end 02 of the diaphragm 00; the second clamp 41 includes a third block 411, a fourth block 412 and a second connecting bolt 413, the third block 411 and the fourth block 412 are used to clamp the second end 02 of the diaphragm 00, the third block 411 is connected to the hanging ring 42, a third hole 4111 is opened on the third block 411 along the length direction of the diaphragm 00, a fourth hole 4121 is opened on the fourth block 412 along the length direction of the diaphragm 00, and the second connecting bolt 413 passes through the third hole 4111 and the fourth hole 4121 to fix the third block 411 and the fourth block 412.

[0060] The setting of the hanging ring 42 allows the pendant assembly 40 to select hanging weights 43 of different weights according to the actual situation of the diaphragm 00, so as to ensure that the diaphragm 00 can be straightened in a targeted manner without stretching the length of the diaphragm 00. The axis of the second connecting bolt 413 is parallel to the length direction of the diaphragm 00, so that the fixing of the third block 411 and the fourth block 412 by the second connecting bolt 413 will not affect the diaphragm 00, ensuring the accuracy of the measurement result.

[0061] In some embodiments, the pendant assembly 40 also includes a second clamping rod 44, and the second clamping jaw 41 clamps the second clamping rod 44; the second clamping rod 44 includes a third rod body 441, a fourth rod body 442 and a second gasket 443, the third rod body 441 and the fourth rod body 442 are used to clamp the second end 02 of the diaphragm 00, the second gasket 443 is padded on the side of the third rod body 441 facing the fourth rod body 442, and the second gasket 443 is padded on the side of the fourth rod body 442 facing the third rod body 441.

[0062] In actual production, the diaphragm 00 does not have a boundary between the first end 01 and the second end 02. This is due to the edge area caused by artificial cutting. Under local stress, deformation and other conditions may occur, affecting the measurement accuracy. The setting of the first clamping rod 35 allows the first end 01 of the diaphragm 00 to be stressed as a whole, avoiding pulling a certain measurement point to cause unevenness in the width direction of the diaphragm 00. The setting of the first gasket 353, on the one hand, avoids the surface of the diaphragm 00 being damaged by clamping, and on the other hand, the thickness or number of the first gasket 353 can be adjusted according to the thickness of the diaphragm 00, making the clamping more stable.

[0063] In order to solve the above technical problems, the present invention further discloses a method for measuring the warpage of the diaphragm 00, which is measured by the measuring device disclosed in any of the above embodiments, and the measuring method comprises the following steps:

[0064] Cut off the diaphragm 00 to be measured;

[0065] Use the clamping assembly 30 to clamp the first left test point 011, and the pendant assembly 40 to clamp the second left test point 021;

[0066] Measure the distance L1 between the first left test point 011 and the second left test point 021;

[0067] Use the clamping assembly 30 to clamp the first right test point 012, and the pendant assembly 40 to clamp the second right test point 022;

[0068] Measure the distance L2 between the first right test point 012 and the second right test point 022; and calculate the length difference between L1 and L2.

[0069] The method for measuring the warpage of the diaphragm 00 disclosed in this embodiment adopts the above-mentioned measuring device. Therefore, the measuring method has the technical effect of the measuring device. Specifically, the warpage degree of the diaphragm 00 can be quantified, which facilitates the production line to accurately control the warpage of the diaphragm 00.

[0070] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0071] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a centering element at the same time. When an element is referred to as being "connected" to another element, it may be directly connected to the other element or it may be indirectly connected to the other element through a centering element. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments may be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0072] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the design concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A measuring device for measuring the warpage of a diaphragm, wherein the diaphragm has a first end and a second end in the length direction thereof, the first end has a first left test point and a first right test point in the width direction of the diaphragm, the second end has a second left test point and a second right test point in the width direction of the diaphragm, the connection direction of the first left test point and the second left test point is the same as the length direction of the diaphragm, and the connection direction of the first right test point and the second right test point is the same as the length direction of the diaphragm, characterized in that: The measuring device comprises: A seat assembly, including a base and a stand connected to each other; A crossbeam assembly, wherein the crossbeam assembly is connected to the vertical pole; A clamping assembly connected to the crossbeam assembly, the clamping assembly being used to clamp the first end of the diaphragm; A pendant assembly, used for clamping the second end of the diaphragm; Among them, when the clamping assembly clamps the first left test point and the pendant assembly clamps the second left test point, the distance between the first left test point and the second left test point is L1, and when the clamping assembly clamps the first right test point and the pendant assembly clamps the second right test point, the distance between the first right test point and the second right test point is L2.

2. The measuring device according to claim 1, characterized in that The crossbeam assembly includes a crossbar, a first ring sleeve and a first bolt. The first ring sleeve is arranged at one end of the crossbar. The vertical pole is inserted into the first ring sleeve and is slidably connected with the first ring sleeve. A first threaded hole is opened on the first ring sleeve. The first bolt passes through the first threaded hole and abuts against the vertical pole to fix the relative position of the first ring sleeve and the vertical pole.

3. The measuring device according to claim 2, characterized in that The seat assembly further includes a first limiting member, which is protruding from one end of the vertical rod away from the base and is used to limit the first ring sleeve from moving between the first limiting member and the base.

4. The measuring device according to claim 1, characterized in that The clamping assembly includes a first clamping jaw and a connecting rod, one end of the connecting rod is connected to the crossbeam assembly, and the other end of the connecting rod is connected to the first clamping jaw, and the first clamping jaw is used to clamp the first end of the diaphragm.

5. The measuring device according to claim 4, characterized in that The clamping assembly further includes a second ring sleeve and a second bolt, wherein the second ring sleeve is connected to an end of the connecting rod away from the first clamping jaw, the connecting rod is slidably connected to the cross bar through the second ring sleeve, a second threaded hole is formed on the second ring sleeve, the second bolt passes through the second threaded hole and abuts against the cross bar, and is used to fix the relative position of the second ring sleeve and the cross bar. The crossbeam assembly further includes a second limiting member, which is protruding from an end of the crossbar away from the first ring sleeve and is used to limit the second ring sleeve from moving between the second limiting member and the first ring sleeve.

6. The measuring device according to claim 4, characterized in that The first clamp includes a first block, a second block and a first connecting bolt, the first block and the second block are used to clamp the first end of the diaphragm, the first block is connected to the connecting rod, a first hole is opened on the first block along the length direction of the diaphragm, and a second hole is opened on the second block along the length direction of the diaphragm. The first connecting bolt passes through the first hole and the second hole to fix the first block and the second block.

7. The measuring device according to claim 4, characterized in that The clamping assembly further comprises a first clamping rod, and the first clamping jaw clamps the first clamping rod; The first clamping rod includes a first rod body, a second rod body and a first gasket. The first rod body and the second rod body are used to clamp the first end of the diaphragm. The first gasket is padded on the side of the first rod body facing the second rod body, and the first gasket is padded on the side of the second rod body facing the first rod body.

8. The measuring device according to claim 1, characterized in that The pendant assembly comprises a second clamping jaw, a hanging ring and a hanging weight, the hanging ring is connected to the second clamping jaw, the hanging weight is hung on the hanging ring, and the clamping jaw is used to clamp the second end of the diaphragm; The second clamp includes a third block, a fourth block and a second connecting bolt, the third block and the fourth block are used to clamp the second end of the diaphragm, the third block is connected to the lifting ring, a third hole is opened on the third block along the length direction of the diaphragm, and a fourth hole is opened on the fourth block along the length direction of the diaphragm. The second connecting bolt passes through the third hole and the fourth hole to fix the third block and the fourth block.

9. The measuring device according to claim 8, characterized in that The pendant assembly further comprises a second clamping rod, and the second clamping jaw clamps the second clamping rod; The second clamping rod includes a third rod body, a fourth rod body and a second gasket, the third rod body and the fourth rod body are used to clamp the second end of the diaphragm, the second gasket is padded on the side of the third rod body facing the fourth rod body, and the second gasket is padded on the side of the fourth rod body facing the third rod body.

10. A method for measuring the warpage of a diaphragm, wherein the method is performed by using the measuring device according to any one of claims 1 to 9, characterized in that: The measuring method comprises the following steps: Cutting the diaphragm to be measured; Using the clamping assembly to clamp the first left test point, and the pendant assembly to clamp the second left test point; Measuring a distance L1 between the first left test point and the second left test point; Using the clamping assembly to clamp the first right test point, and the pendant assembly to clamp the second right test point; Measuring a distance L2 between the first right test point and the second right test point; Calculate the length difference between L1 and L2.

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