Yarn torque measuring device

Abstract

The utility model provides a kind of yarn torque measuring device, including substrate;Fixed component, fixed component is located substrate, and it is used to fix the length section of yarn to be measured, fixed component is spaced apart and is provided with at least two;Gravity piece, gravity piece is used to connect in yarn, to exert gravity to yarn;Measuring unit, measuring unit is used to measure the change situation of yarn after gravity piece connects in yarn.The yarn torque measuring device provided by the utility model is used, yarn is fixed by fixed component after, connect gravity piece in yarn bottom end, gravity piece will rotate under the action of yarn torque, so that part yarn will twist together, the distance between the upper endpoint of part yarn twisted together and reference point is measured by measuring unit, that is, the torque of yarn can be judged.The whole measuring process is simple in operation, high in efficiency, and will not cause damage to yarn, save cost, and measuring device can measure the torque of different kinds of yarn.

Description

Technical Field

[0001] This utility model relates to the field of fabric production technology, and in particular to a yarn torque measuring device. Background Technology

[0002] During the false twisting or twisting process of yarn, potential residual torque can easily be generated due to insufficient heat setting or uneven tension control. If it is not effectively detected and controlled, the residual torque will be released during the weaving, dyeing, setting, or garment making stages, resulting in fabric skewing, weft skew, spiral deformation, and dimensional instability.

[0003] Existing devices for measuring residual yarn torque require the yarn to be secured by upper and lower yarn clamps arranged vertically. Then, a yarn clamp is installed on the yarn between the two clamps. Finally, the yarn between the yarn clamp and the lower clamp needs to be cut. This process is cumbersome, inefficient, and results in yarn waste. Utility Model Content

[0004] The purpose of this invention is to provide a yarn torque measuring device that is simple to operate, highly efficient, and avoids yarn waste.

[0005] To achieve the above objectives, this utility model provides a yarn torque measuring device, comprising: substrate; A fixing component is disposed on the substrate and used to fix a portion of the length of the yarn to be tested; at least two fixing components are provided at intervals. A gravity element, which is used to connect to the yarn to apply gravity to the yarn, causing a portion of the yarn to twist together; A measuring unit is used to measure the distance between the upper end point of a portion of yarn twisted together and a reference point.

[0006] As a further improvement of this utility model, the measuring device further includes a fixing member connected to the substrate, the fixing member being disposed protruding from the substrate and being a predetermined distance away from the fixing component along the length direction of the substrate.

[0007] As a further improvement of this utility model, a plurality of fixing components are arranged at intervals along the width direction of the substrate. The plurality of fixing components include a first fixing component, a second fixing component, and a third fixing component. The first fixing component is located between the second fixing component and the third fixing component, and the distance between the second fixing component and the first fixing component is equal to the distance between the third fixing component and the first fixing component.

[0008] As a further improvement of this utility model, the fixing member includes a first fixing member and a second fixing member. The first fixing member is disposed between the first fixing component and the second fixing component in the width direction of the substrate, and the second fixing member is disposed between the first fixing component and the third fixing component in the width direction of the substrate.

[0009] As a further improvement of this utility model, the plurality of fixing components further include a fourth fixing component disposed between the first fixing component and the second fixing component, and a fifth fixing component disposed between the first fixing component and the third fixing component, wherein the distance between the fourth fixing component and the first fixing component is equal to the distance between the fifth fixing component and the first fixing component.

[0010] As a further improvement of this utility model, the fixing member includes a third fixing member and a fourth fixing member. The third fixing member is disposed between the first fixing component and the fourth fixing component in the width direction of the substrate, and the fourth fixing member is disposed between the first fixing component and the fifth fixing component in the width direction of the substrate. The third fixing member is disposed closer to the first fixing component than the first fixing member, and the fourth fixing member is disposed closer to the first fixing component than the second fixing member.

[0011] As a further improvement of this utility model, the fixing member further includes a fifth fixing member, which corresponds to the first fixing component in the length direction of the substrate.

[0012] As a further improvement of this utility model, the fixing component includes a connecting shaft connected to the substrate, a first clamping member sleeved on the connecting shaft, and an elastic member disposed on the side of the first clamping member away from the substrate. The two ends of the elastic member abut against the first clamping member and the connecting shaft respectively along the axial direction of the connecting shaft.

[0013] As a further improvement of this utility model, the measuring unit is a scale disposed on the substrate, and the scale extends along the length direction of the substrate.

[0014] As a further improvement of this utility model, the measuring unit includes: A movable block, located on one side of at least two of the fixed components in the width direction of the substrate, and movably connected to the substrate in the length direction of the substrate; A driving component, the driving component being used to drive the movable block to move along the length direction of the base; A distance sensor is disposed on the movable block along the width direction of the substrate, facing at least two of the fixed components. Beneficial effects: The yarn torque measuring device provided by this utility model, in use, involves fixing the yarn to the fixing component, then connecting a gravity component to the bottom of the yarn. The gravity component rotates under the action of the yarn torque, causing some of the yarn to twist together. The distance between the upper end of the twisted portion of the yarn and the reference point is measured by the measuring unit, thus determining the magnitude of the yarn torque. The entire measurement process is simple to operate, highly efficient, and does not damage the yarn, saving costs. Furthermore, the yarn can be fixed to the fixing component in different ways, and the measuring device can measure the torque of different types of yarn. Attached Figure Description

[0015] Figure 1 This is a front view of a measuring device provided in an embodiment of the present invention, wherein the yarn is fixed to the measuring device in a first fixing method; Figure 2 for Figure 1 A front view of the measuring device in the image, wherein a gravity element is connected to the bottom end of the yarn; Figure 3 for Figure 1 Side view of the measuring device in the middle; Figure 4 This is a front view of a measuring device provided in an embodiment of the present invention, wherein the yarn is fixed to the measuring device in a second fixing method; Figure 5 for Figure 4 A front view of the measuring device in the image, wherein a gravity element is connected to the bottom end of the yarn; Figure 6 This is a front view of a measuring device provided in an embodiment of the present invention, wherein the yarn is fixed to the measuring device in a third fixing method; Figure 7 for Figure 6 A front view of the measuring device in the image, wherein a gravity element is connected to the bottom end of the yarn; Figure 8 for Figure 3 A magnified schematic diagram of the upper part of the structure shown. Figure 9 A front view of a measuring device provided in another embodiment of this utility model; Figure 10 A front view of a measuring device provided in another embodiment of this utility model.

[0016] In the picture: 100. Yarn torque measuring device; 10. Substrate; 20. Fixing component; 20a. First fixing component; 20b. Second fixing component; 20c. Third fixing component; 20d. Fourth fixing component; 20e. Fifth fixing component; 21. Connecting shaft; 22. First clamping member; 23. Elastic member; 24. Second clamping member; 30. Gravity components; 40. Measuring unit; 41. Scale; 42. Moving block; 43. Drive assembly; 431. Lead screw; 432. Motor; 44. Distance sensor; 50. Fastener; 50a. First fastener; 50b. Second fastener; 50c. Third fastener; 50d. Fourth fastener; 50e. Fifth fastener.

[0017] 200. Yarn. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0019] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0020] like Figure 1-3 As shown, one embodiment of the present invention provides a yarn torque measuring device 100, which can be used to measure the residual torque of yarn 200.

[0021] The yarn torque measuring device 100 (hereinafter referred to as the measuring device) includes a base plate 10, a fixing component 20, a gravity component 30, and a measuring unit 40.

[0022] The substrate 10 is a flat plate. A fixing component 20 is disposed on the substrate 10 and is used to fix a portion of the length of the yarn 200 to be tested. A portion of the yarn 200 can be fixed by the fixing component 20, thus maintaining its position relative to the substrate 10. At least two fixing components 20 are spaced apart. These at least two fixing components 20 can be arranged spaced apart along the width direction of the substrate 10.

[0023] It should be noted that the length direction of substrate 10 is where substrate 10 is located. Figure 1 In the state shown, the vertical direction is such that the width direction of the substrate 10 is such that the substrate 10 is in the vertical direction. Figure 1 The left and right directions are shown in the diagram. When using the measuring device 100, the substrate 10 should be placed vertically, with its length direction aligned with the direction of gravity and its width direction aligned with the horizontal direction.

[0024] The gravity element 30 is connected to the yarn 200 to apply gravity to the yarn 200. After the gravity element 30 is connected to the yarn 200, the measuring unit 40 is used to measure the changes in the yarn 200.

[0025] When measuring the residual torque of yarn 200 using the yarn torque measuring device 100 provided in this embodiment, the yarn 200 must first be fixed to the measuring device 100. Specifically, the two parts of the same yarn 200 are fixed to two fixing components 20 respectively. At this time, the yarn 200 in the drooping state can be roughly V-shaped (e.g., Figure 1 (As shown). Next, connect the gravity member 30 to the yarn 200, ensuring the gravity member 30 is connected to the bottom end of the yarn 200 when it is in a drooping state. After connecting the gravity member 30 to the yarn 200 as described above, the gravity member 30 will straighten the yarn 200, and under the action of the residual torque within the yarn 200, the gravity member 30 will rotate, causing some of the yarn 200 to twist together (e.g., Figure 2 (As shown).

[0026] The aforementioned measuring unit 40 measures the changes in the yarn 200, specifically the distance between the upper end of the twisted portion of the yarn 200 and the reference point. This distance reflects the magnitude of the residual torque of the yarn 200.

[0027] Regarding the term "reference point," it should be understood as the lowest point of the yarn 200 when it is in a drooping state. When measuring the torque of the yarn 200, the length of the yarn 200 fixed between the two fixing components 20 is fixed; therefore, the position of the reference point can be predicted. The distance between the upper end of the twisted portion of the yarn 200 and the reference point can be referenced. Figure 2 The distance h in the middle.

[0028] like Figure 4-5As shown, in addition to the above-described method of fixing the yarn 200, when using the yarn torque measuring device 100 provided in this embodiment to measure the torque of the yarn 200, the yarn 200 can also be fixed using only the first fixing component 20a. In this case, both parts of the same yarn 200 are fixed to the same fixing component 20, and the yarn 200 in the drooping state is straight. Then, the gravity component 30 is connected to the yarn 200, and the gravity component 30 needs to be connected to the bottom end of the yarn 200 in the drooping state. After the gravity component 30 is connected to the yarn 200 in the above-described manner, the gravity component 30 will straighten the yarn 200. Under the action of the residual torque within the yarn 200, the gravity component 30 will rotate, causing part of the yarn 200 to twist together. The measuring unit 40 measures the changes in the yarn 200, that is, it measures the distance between the upper end point of the twisted part of the yarn 200 and the reference point.

[0029] In this embodiment, the yarn torque measuring device 100 is used such that after the yarn 200 is fixed by the fixing component 20, the gravity component 30 is connected to the bottom end of the yarn 200. The gravity component 30 will rotate under the action of the yarn 200 torque, causing part of the yarn 200 to twist together. The distance between the upper end of the twisted part of the yarn 200 and the reference point is measured by the measuring unit 40, thereby determining the magnitude of the yarn 200 torque. The entire measurement process is simple to operate, highly efficient, and does not damage the yarn 200, saving costs. Furthermore, the yarn 200 can be fixed to the fixing component 20 in different ways, and the measuring device 100 can measure the torque of different types of yarn 200.

[0030] like Figure 1-3 As shown, in this embodiment, the measuring device 100 further includes a fixing member 50, which is connected to the substrate 10 and protrudes from the substrate 10. The fixing member 50 and the fixing component 20 are spaced a predetermined distance apart along the length of the substrate 10. When fixing the yarn 200 to the measuring device 100, a portion of the yarn 200 can first be fixed by one fixing component 20, then the yarn 200 can be made to pass around the fixing member 50, and then another portion of the yarn 200 can be fixed by another fixing component 20. In this way, the yarn 200 can be fixed to the measuring device 100 in a V-shape. The setting of the fixing member 50 ensures that the length of the yarn 200 fixed between the two fixing components 20 can be maintained at a predetermined value. It can be imagined that this predetermined value is equal to the straight-line distance between the fixing member 50 and one fixing component 20 plus the straight-line distance between the fixing member 50 and the other fixing component 20. The aforementioned reference point is located at the position of the fixing member 50.

[0031] Continue to combine Figure 4-5As shown, it can be imagined that if the yarn 200 is fixed by only one fixing component 20, that is, after fixing a part of the yarn 200 to a fixing component 20, the yarn 200 passes around the fixing member 50, and then the other part of the yarn 200 is fixed to the same fixing component 20, the length of the yarn 200 fixed to the fixing component 20 is twice the straight-line distance between the fixing member 50 and the fixing component 20.

[0032] like Figure 1-3 As shown, multiple fixing components 20 are spaced apart along the width direction of the substrate 10. Each fixing component 20 includes a first fixing component 20a, a second fixing component 20b, and a third fixing component 20c. The first fixing component 20a is located between the second fixing component 20b and the third fixing component 20c, and the distance A between the second fixing component 20b and the first fixing component 20a is equal to the distance B between the third fixing component 20c and the first fixing component 20a. The second fixing component 20b and the third fixing component 20c are symmetrically distributed on both sides of the first fixing component 20a.

[0033] With the above configuration, the first fixing component 20a and the second fixing component 20b can fix a yarn 200, and the first fixing component 20a and the third fixing component 20c can also fix a yarn 200. In this way, the measuring device 100 can simultaneously measure the torque of two yarns 200, thereby ensuring measurement efficiency.

[0034] The fastener 50 includes a first fastener 50a and a second fastener 50b. The first fastener 50a is disposed between the first fastener 20a and the second fastener 20b in the width direction of the substrate 10, and the second fastener 50b is disposed between the first fastener 20a and the third fastener 20c in the width direction of the substrate 10.

[0035] With the above configuration, the first fixing component 20a, the second fixing component 20b, and the first fixing member 50a can fix one yarn 200, and the first fixing member 50a can maintain the length of the yarn 200 between the first fixing component 20a and the second fixing component 20b at a preset value. The first fixing component 20a, the third fixing component 20c, and the second fixing member 50b can fix another yarn 200, and the second fixing member 50b can maintain the length of the yarn 200 between the first fixing component 20a and the third fixing component 20c at a preset value.

[0036] Continue to combine Figure 6-7As shown, the plurality of fixing components 20 also includes a fourth fixing component 20d and a fifth fixing component 20e. The fourth fixing component 20d is disposed between the first fixing component 20a and the second fixing component 20b, and the fifth fixing component 20e is disposed between the first fixing component 20a and the third fixing component 20c. Furthermore, the distance C between the fourth fixing component 20d and the first fixing component 20a is equal to the distance D between the fifth fixing component 20e and the first fixing component 20a. The fourth fixing component 20d and the fifth fixing component 20e are symmetrically distributed on both sides of the first fixing component 20a.

[0037] With the above configuration, the first fixing component 20a and the fourth fixing component 20d can fix a yarn 200, and the first fixing component 20a and the fifth fixing component 20e can also fix a yarn 200.

[0038] For different types of yarn 200, the method of fixing them to the measuring device 100 must also be different when measuring their torque. The first fixing component 20a, the second fixing component 20b, and the third fixing component 20c described above can be used to fix two yarns 200 of the same type. The first fixing component 20a, the fourth fixing component 20d, and the fifth fixing component 20e described above can fix two yarns 200 of other types. In this way, the measuring device 100 can measure the torque of different types of yarn 200.

[0039] The fixing member 50 also includes a third fixing member 50c and a fourth fixing member 50d. The third fixing member 50c is disposed between the first fixing member 20a and the fourth fixing member 20d in the width direction of the substrate 10, and the fourth fixing member 50d is disposed between the first fixing member 20a and the fifth fixing member 20e in the width direction of the substrate 10.

[0040] With the above configuration, the first fixing component 20a, the fourth fixing component 20d, and the third fixing member 50c can fix one yarn 200, and the third fixing member 50c can maintain the length of the yarn 200 between the first fixing component 20a and the fourth fixing component 20d at a preset value. The first fixing component 20a, the fifth fixing component 20e, and the fourth fixing member 50d can fix another yarn 200, and the fourth fixing member 50d can maintain the length of the yarn 200 between the first fixing component 20a and the fifth fixing component 20e at a preset value.

[0041] In this embodiment, the third fastener 50c is positioned closer to the first fastening component 20a than the first fastener 50a. Thus, the length of the yarn 200 fixed by the first fastening component 20a, the second fastening component 20b, and the first fastener 50a is different from the length of the yarn 200 fixed by the first fastening component 20a, the fourth fastening component 20d, and the third fastener 50c.

[0042] The fourth fastener 50d is positioned closer to the first fastening component 20a than the second fastener 50b. Thus, the length of the yarn 200 fixed by the first fastening component 20a, the third fastening component 20c, and the second fastener 50b is different from the length of the yarn 200 fixed by the first fastening component 20a, the fifth fastening component 20e, and the fourth fastener 50d.

[0043] In this embodiment, the first fixing member 50a is disposed at the center of the first fixing component 20a and the second fixing component 20b in the width direction of the substrate 10. Thus, the yarn 200 fixed by the first fixing component 20a, the second fixing component 20b and the first fixing member 50a is symmetrical and its length is easy to determine.

[0044] Similarly, the second fastener 50b is located at the center of the first fastener 20a and the third fastener 20c in the width direction of the substrate 10. The third fastener 50c is located at the center of the first fastener 20a and the fourth fastener 20d in the width direction of the substrate 10. The fourth fastener 50d is located at the center of the first fastener 20a and the fifth fastener 20e in the width direction of the substrate 10.

[0045] like Figure 4-5 As shown, in this embodiment, the fixing member 50 further includes a fifth fixing member 50e, which corresponds to the first fixing component 20a in the length direction of the substrate 10. As described above, when the yarn torque measuring device 100 provided in this embodiment measures the torque of the yarn 200, only one fixing component 20 is needed to fix the yarn 200. Therefore, the first fixing component 20a and the fifth fixing member 50e can be used to fix another type of yarn 200 so that the torque of that type of yarn 200 can be measured later.

[0046] like Figure 8 As shown, the fixing assembly 20 includes a connecting shaft 21, a first clamping member 22, and an elastic member 23. The connecting shaft 21 is connected to the substrate 10 and can be disposed perpendicular to the substrate 10. The first clamping member 22 is sleeved on the connecting shaft 21 and can move along the axial direction of the connecting shaft 21. The elastic member 23 is disposed on the side of the first clamping member 22 facing away from the substrate 10, and its two ends respectively abut against the first clamping member 22 and the connecting shaft 21 along the axial direction of the connecting shaft 21.

[0047] When it is necessary to fix the yarn 200, the portion of the yarn 200 to be fixed can be placed between the first clamping member 22 and the base plate 10. Under the action of the elastic member 23, the first clamping member 22 and the base plate 10 will clamp the portion of the yarn 200 to be fixed, thereby fixing the yarn 200. When fixing the yarn 200, the yarn 200 can be wound around the connecting shaft 21 to ensure the fixing effect of the fixing component 20 on the yarn 200. The fixing component 20 in this embodiment can conveniently and reliably fix the yarn 200.

[0048] The fixing component 20 may further include a second clamping member 24, which is disposed between the first clamping member 22 and the substrate 10. When fixing the yarn 200, the portion of the yarn 200 to be fixed is placed between the first clamping member 22 and the second clamping member 24. Under the action of the elastic member 23, the first clamping member 22 and the second clamping member 24 will clamp the portion of the yarn 200 to be fixed, thereby fixing the yarn 200.

[0049] like Figure 1 As shown, in one embodiment of this utility model, the measuring unit 40 is a scale 41, which is disposed on the substrate 10 and extends along the length of the substrate 10. The scale 41 has a graduation, and through the scale 41, the operator can measure the distance between the upper end point of the twisted portion of the yarn 200 and the reference point after the weight 30 is suspended. In a specific setting, the zero point of the graduation on the scale 41 can be aligned with the aforementioned reference point (i.e., the position of the fixing member 50).

[0050] like Figure 9 As shown, in another embodiment of this invention, the measuring unit 40 includes a moving block 42, a driving assembly 43, and a distance sensor 44. The moving block 42 is located on one side of at least two fixed assemblies 20 in the width direction of the substrate 10 and is movably connected to the substrate 10 in the length direction of the substrate 10, enabling it to move along the length direction of the substrate 10. The driving assembly 43 drives the moving block 42 to move along the length direction of the substrate 10. The distance sensor 44 is located on one side of the moving block 42 facing the at least two fixed assemblies 20 in the width direction of the substrate 10, and is capable of moving with the moving block 42.

[0051] The drive assembly 43 includes a lead screw 431 and a motor 432. The lead screw 431 is rotatably disposed relative to the substrate 10, and the moving block 42 is threadedly connected to the lead screw 431. The motor 432 is used to drive the lead screw 431 to rotate. When the lead screw 431 rotates, it can drive the moving block 42 to move along the length direction of the substrate 10.

[0052] like Figure 9As shown, after a portion of the yarn 200 is twisted together, the twisted portion of the yarn 200 is located in the middle of the two fixing components 20. Given the positions of the two fixing components 20, the position of the twisted portion of the yarn 200 in the width direction of the substrate 10 is predictable. Taking the yarn 200 fixed to the first fixing component 20a and the second fixing component 20b as an example, after the gravity member 30 is connected, along the width direction of the substrate 10, the twisted position of the yarn 200 is located in the middle of the first fixing component 20a and the second fixing component 20b.

[0053] After some yarns 200 are twisted, the upper part of the yarns 200 still maintains a V-shape. The distance sensor 44 can measure the distance between the yarns 200 and the substrate 10 along its width. Specifically, as the distance sensor 44 moves along the length of the substrate 10, if it detects that the distance between the distance sensor 44 and the yarns 200 remains constant, it indicates that the distance sensor 44 is detecting the twisted portion of the yarns 200. Thus, as the distance sensor 44 moves downwards, the measuring unit 40 can determine the position of the upper end point of the twisted portion of the yarns 200 based on when the distance detected by the distance sensor 44 no longer changes. As described above, the position of the reference point is preset (i.e., the position of the fixing member 50). After measuring the position of the upper end point, the measuring unit 40 can calculate the position between the upper end point and the reference point.

[0054] In this implementation, the distance sensor 44 is an infrared distance sensor.

[0055] like Figure 10 As shown, in other embodiments of this utility model, the measuring unit 40 may only include a distance sensor 44. The distance sensor 44 is disposed between two fixed components 20 and at a position slightly above the substrate 10. The distance sensor 44 can detect the position of the upper end point from top to bottom.

[0056] In this embodiment, a suspension portion is formed on the gravity member 30. The suspension portion is used to suspend the gravity member 30 on the yarn 200, that is, the gravity member 30 can be connected to the yarn 200 in a suspended form through the suspension portion. In this way, the gravity member 30 can be conveniently connected to the yarn 200 and its bottom end in a drooping state.

[0057] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0058] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A yarn torque measuring device, characterized in that, include: substrate; A fixing component is disposed on the substrate and used to fix a portion of the length of the yarn to be tested; at least two fixing components are provided at intervals. A gravity element, which is used to connect to the yarn to apply gravity to the yarn, causing a portion of the yarn to twist together; A measuring unit is used to measure the distance between the upper end point of a portion of yarn twisted together and a reference point.

2. The measuring device according to claim 1, characterized in that, The measuring device further includes a fixing member connected to the substrate, the fixing member protruding from the substrate and being spaced a predetermined distance from the fixing component along the length direction of the substrate.

3. The measuring device according to claim 2, characterized in that, Multiple fixing components are spaced apart along the width direction of the substrate. The multiple fixing components include a first fixing component, a second fixing component, and a third fixing component. The first fixing component is located between the second fixing component and the third fixing component, and the distance between the second fixing component and the first fixing component is equal to the distance between the third fixing component and the first fixing component.

4. The measuring device according to claim 3, characterized in that, The fixing member includes a first fixing member and a second fixing member. The first fixing member is disposed between the first fixing component and the second fixing component in the width direction of the substrate, and the second fixing member is disposed between the first fixing component and the third fixing component in the width direction of the substrate.

5. The measuring device according to claim 4, characterized in that, The plurality of fixing components further include a fourth fixing component disposed between the first fixing component and the second fixing component, and a fifth fixing component disposed between the first fixing component and the third fixing component, wherein the distance between the fourth fixing component and the first fixing component is equal to the distance between the fifth fixing component and the first fixing component.

6. The measuring device according to claim 5, characterized in that, The fixing member includes a third fixing member and a fourth fixing member. The third fixing member is disposed between the first fixing member and the fourth fixing member in the width direction of the substrate. The fourth fixing member is disposed between the first fixing member and the fifth fixing member in the width direction of the substrate. The third fixing member is disposed closer to the first fixing member than the first fixing member, and the fourth fixing member is disposed closer to the first fixing member than the second fixing member.

7. The measuring device according to claim 3, characterized in that, The fixing component further includes a fifth fixing component, which corresponds to the first fixing component in the length direction of the substrate.

8. The measuring device according to claim 1, characterized in that, The fixing assembly includes a connecting shaft connected to the substrate, a first clamping member sleeved on the connecting shaft, and an elastic member disposed on the side of the first clamping member away from the substrate. The two ends of the elastic member abut against the first clamping member and the connecting shaft respectively along the axial direction of the connecting shaft.

9. The measuring device according to claim 1, characterized in that, The measuring unit is a scale disposed on the substrate, and the scale extends along the length direction of the substrate.

10. The measuring device according to claim 1, characterized in that, The measurement unit includes: A movable block, located on one side of at least two of the fixed components in the width direction of the substrate, and movably connected to the substrate in the length direction of the substrate; A driving component, the driving component being used to drive the movable block to move along the length direction of the substrate; A distance sensor is disposed on the side of the movable block facing at least two of the fixed components along the width direction of the substrate.

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