Fabric thickness on-line measuring device

Abstract

The utility model relates to the field of fabric thickness measurement, in particular to a fabric thickness on-line measuring device. The fabric thickness on-line measuring device comprises a displacement measuring mechanism and two opposite clamping pieces, wherein one clamping piece is a fixed clamping piece, the other clamping piece is a movable clamping piece, and the movable clamping piece presses a conveyed fabric on the fixed clamping piece under the action of an elastic element; or the two clamping pieces are both movable clamping pieces and jointly clamp the conveyed fabric under the action of the corresponding elastic elements; and the displacement measuring mechanism is used for measuring the relative displacement of the two clamping pieces so as to measure the thickness of the fabric on line. According to the utility model, the pressing force with the preset force can be applied to the conveyed fabric, and the online thickness measurement of the fabric including the three-dimensional fluff structure fabric can be accurately realized.

Description

Technical Field

[0001] This utility model relates to the field of fabric thickness measurement, and specifically to an online fabric thickness measurement device. Background Technology

[0002] In the textile industry, accurate measurement of fabric thickness is a core aspect of quality control, directly affecting product performance and downstream processing techniques.

[0003] Traditional fabric thickness inspection mainly relies on manual static measurement, that is, workers use micrometers and other thickness measuring tools to sample and measure local parts of the fabric while the production line is stopped. This measurement method makes it impossible to capture thickness fluctuations in real time, makes it difficult to dynamically adjust process parameters, has a lag, is prone to batch quality defects, and requires frequent manual intervention, which disrupts production continuity and increases labor costs.

[0004] To address the drawbacks of manual measurement, the industry has gradually adopted non-contact laser thickness measurement technology, which achieves continuous online measurement through the principle of laser reflection. This method features high-frequency online sampling, and its physical characteristics make it well-suited for fabrics with solid surfaces. However, it has the following drawbacks when measuring the thickness of fabrics with three-dimensional pile structures: the laser beam causes diffuse reflection on the fabric surface. For fabrics with three-dimensional pile structures such as napped, brushed, or flocked fabrics, laser thickness measurement will include the pile height in the measurement result, leading to a thickness value higher than the actual thickness of the fabric itself.

[0005] Therefore, there is an urgent need to design a device that can measure the thickness of fabrics, including those with a three-dimensional pile structure, online. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an online fabric thickness measurement device that can apply a preset clamping force to the conveyed fabric and accurately realize the online measurement of the thickness of fabrics, including fabrics with three-dimensional pile structure.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: an online fabric thickness measuring device, comprising a displacement measuring mechanism and two opposing clamping members; wherein,

[0008] One clamping member is a fixed clamping member, and the other clamping member is a movable clamping member. The movable clamping member presses the fabric to be conveyed onto the fixed clamping member under the action of an elastic element; or both clamping members are movable clamping members, which together clamp the fabric to be conveyed under the action of corresponding elastic elements.

[0009] The displacement measuring mechanism is used to measure the relative displacement of the two clamping parts in order to measure the fabric thickness online.

[0010] Furthermore, the opposing surfaces of the two clamping components are both planes and are parallel to each other.

[0011] Furthermore, at least one clamping element is bowl-shaped with its opening facing away from the fabric;

[0012] Or at least one clamping element is flat;

[0013] Or at least one clamping element is in the shape of a seesaw with both ends raised away from the fabric.

[0014] Furthermore, to ensure smooth movement of the movable clamping component, the online fabric thickness measuring device also includes a carrier body corresponding to each movable clamping component, with the movable clamping component slidably mounted on the carrier body via at least two sliding rods.

[0015] Furthermore, in order to protect the elastic element, the carrier is a box, the elastic element is located inside the box, and acts on the part of the sliding rod that extends into the box.

[0016] A further provision provides a specific structure for a displacement measuring mechanism, the displacement measuring mechanism including displacement sensors corresponding one-to-one with the movable clamping member, the displacement sensors being installed inside the housing, and a mating block cooperating with the displacement sensor being fixed at the part of the movable clamping member extending into the housing or at the part of the sliding rod extending into the housing.

[0017] Furthermore, to ensure that the forces on each sliding rod are balanced, the online fabric thickness measuring device also includes a mounting plate located inside the housing and connected to all the sliding rods extending into the housing. The mating block is fixed to the sliding rods by being connected to the mounting plate.

[0018] Furthermore, to prevent the displacement sensor from being damaged by collision with the mating block, a limiting part is provided inside the housing to limit the amount of displacement of the mating block toward the displacement sensor side.

[0019] A specific installation method for the elastic element is further provided, wherein the elastic element corresponds one-to-one with the sliding rod, the carrier is equipped with a mounting rod corresponding one-to-one with the sliding rod, one end of the elastic element abuts against the abutting part on the mounting rod, and the other end abuts against the abutting part on the sliding rod.

[0020] Furthermore, in order to adjust the preload of the elastic element as needed, the distance between the two contact parts that abut against the same elastic element is adjustable.

[0021] A further provision provides a structure that allows for convenient adjustment of the preload of the elastic element, wherein the mounting rod is threaded onto the carrier body so that the distance between the two corresponding abutment portions can be adjusted by rotating the mounting rod.

[0022] After adopting the above technical solution, the fabric passes between the two clamping members. The movable clamping member, under the action of the elastic element, presses the fabric onto the fixed clamping member with a clamping force within a preset range, or the two movable clamping members, under the action of corresponding elastic elements, clamp the fabric with a clamping force within a preset range. During the fabric conveying process, the relative distance between the two clamping members changes with the fabric thickness. By measuring the relative displacement between the two clamping members using a displacement measuring mechanism, online measurement of the fabric thickness can be achieved. Because the two clamping members apply pressure within a preset range to the fabric, the pile of fabrics with a three-dimensional pile structure can be pressed down during the measurement process. Therefore, this invention is also applicable to the online thickness measurement of fabrics with a three-dimensional pile structure, and the measurement results are accurate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the longitudinal section of the first type of online fabric thickness measuring device of this utility model;

[0024] Figure 2 This is a cross-sectional schematic diagram of the first type of online fabric thickness measuring device of this utility model;

[0025] Figure 3 This is a schematic diagram of the longitudinal section of the second type of online fabric thickness measuring device of this utility model;

[0026] Figure 4 This is a cross-sectional schematic diagram of the second type of online fabric thickness measuring device of this utility model;

[0027] Figure 5 This is a cross-sectional schematic diagram of the third type of online fabric thickness measuring device of this utility model;

[0028] In the figure, 1 is the displacement measuring mechanism; 11 is the displacement sensor; 12 is the mating block; 2 is the clamping component; 2a is the fixed clamping component; 2b is the movable clamping component; 3 is the elastic element; 4 is the carrier; 5 is the sliding rod; 6 is the mounting plate; 7 is the limiting part; 8 is the mounting rod; 9 is the abutment part; and 10 is the fabric. Detailed Implementation

[0029] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] Example 1

[0031] like Figures 1 to 5 As shown, an online fabric thickness measuring device includes a displacement measuring mechanism 1 and two opposing clamping members 2; wherein,

[0032] One clamping member 2 is a fixed clamping member 2a, and the other clamping member 2 is a movable clamping member 2b. The movable clamping member 2b presses the fabric 10 to be conveyed onto the fixed clamping member 2a under the action of the elastic element 3; or both clamping members 2 are movable clamping members 2b, which together clamp the fabric 10 to be conveyed under the action of the corresponding elastic element 3.

[0033] The displacement measuring mechanism 1 is used to measure the relative displacement of the two clamping parts 2 in order to measure the thickness of the fabric 10 online.

[0034] In this embodiment, both clamping members 2 can be movable clamping members 2b, such as... Figure 3 , Figure 4 and Figure 5 As shown. In this case, the two moving clamps 2b adaptively adjust their positions within a certain range according to the fabric 10 being conveyed, making them more adaptable to changes in the thickness of the fabric 10, with more uniform clamping force, reducing pressure fluctuations caused by thickness differences, and making the online thickness detection results more accurate and precise.

[0035] In this embodiment, the two clamping members 2 can also be one fixed clamping member 2a and the other movable clamping member 2b, such as... Figure 1 and Figure 2 As shown. In this case, only the position of a single moving clamp 2b needs to be adjusted, resulting in lower installation and maintenance costs.

[0036] Specifically, the fabric 10 passes between the two clamping members 2. The movable clamping members 2, under the action of the elastic element 3, press the fabric 10 against the fixed clamping member 2a with a clamping force within a preset range, or the two movable clamping members 2b, under the action of the corresponding elastic element 3, clamp the fabric 10 with a clamping force within a preset range. During the fabric 10 conveying process, the relative distance between the two clamping members 2 changes with the thickness of the fabric 10. By measuring the relative displacement between the two clamping members 2 using the displacement measuring mechanism 1, the online thickness measurement of the fabric 10 can be achieved. Because the two clamping members 2 apply pressure within a preset range to the fabric 10, the pile of the fabric 10 with a three-dimensional pile structure can be pressed down during the measurement process, thus it is also suitable for online thickness measurement of fabrics 10 with a three-dimensional pile structure.

[0037] In this embodiment, as Figures 1 to 5 As shown, the opposing surfaces of the two clamping members 2 are both planes and parallel to each other, thus achieving surface-to-surface clamping of the fabric 10.

[0038] It should be noted that the width of the clamping member 2 is much smaller than the width of the fabric 10. The clamping member 2 can be flat and slide in contact with the fabric 10. To avoid scratching the fabric 10 by the ends of the clamping member 2, especially the ends perpendicular to the conveying direction of the fabric 10, at least one clamping member 2 can be configured as a rocker, such as... Figure 1 Clamping part 2 on the left side and Figure 3 The fabric 10 enters between the two clamping members 2 from the raised end, with a smooth transition between the raised end and the straight portion. Alternatively, at least one clamping member 2 can be configured in a bowl shape, such as... Figure 1 The clamping part 2 on the right side, that is, the perimeter of the clamping part 2 is raised, and the raised part is smoothly transitioned to the flat part.

[0039] Of course, the opposing surfaces of the two clamping members 2 can also be spherical or cylindrical surfaces, using curved surfaces such as spherical or cylindrical surfaces to clamp the fabric 10, achieving point or line contact with the fabric 10. In this case, the two clamping members 2 can be rotating bodies, rotating under the influence of the fabric 10, and making rolling contact with the fabric 10. Alternatively, both clamping members 2 can be non-rotatable structures, making sliding contact with the fabric.

[0040] In this embodiment, the clamping member 2 and the fabric 10 preferably have a sliding contact. This avoids the impact of the bearing connection gap on the measurement accuracy, and the measurement accuracy can reach 0.01mm.

[0041] In this embodiment, the elastic element 3 can be a compression spring or the like.

[0042] Example 2

[0043] like Figures 1 to 5 As shown, based on Embodiment 1, the online fabric thickness measuring device further includes a carrier 4 corresponding to the movable clamp 2b, and the movable clamp 2b is slidably mounted on the carrier 4 via at least two sliding rods 5.

[0044] In this way, the moving clamp 2b can be easily supported, and through the guidance of at least two sliding rods 5, the moving clamp 2b can move evenly as the thickness of the fabric 10 changes.

[0045] The support body 4 only needs to be able to support the sliding rod 5, and can be a frame or a box, etc. In this embodiment, the support body 4 is a box, and the elastic element 3 is located inside the box and acts on the part of the sliding rod 5 that extends into the box. In this way, the closed box can protect the elastic element 3 and prevent wire ends, stains, etc. from contaminating the elastic element 3 and causing it to jam.

[0046] In this embodiment, as Figures 1 to 5As shown, considering the high precision of the displacement measuring mechanism 1, in order to protect the displacement measuring mechanism 1 from dust, oil, wires, etc., so as to prevent the displacement measuring mechanism 1 from being affected by dust, oil, wires, etc., the displacement measuring mechanism 1 includes a displacement sensor 11 corresponding to the movable clamping member 2b. The displacement sensor 11 is installed in the box. The part of the movable clamping member 2b that extends into the box or the part of the sliding rod 5 that extends into the box is fixed with a mating block 12 that cooperates with the displacement sensor 11.

[0047] The displacement sensor 11 can be model LVDT8P-V2-2.5mm-SL-A-1.

[0048] exist Figures 1 to 4 In the structure shown, the mating block 12 is fixed to the part of the sliding rod 5 that extends into the housing. Figure 5 In the structure shown, the mating block 12 is fixed to the part of the movable clamping member 2b that extends into the box body.

[0049] Preferably, the mating block 12 is fixed to the part of the sliding rod 5 that extends into the housing. This reduces the number of openings in the housing and allows the housing to better protect the internal components. More preferably, the online fabric thickness measuring device also includes a mounting plate 6 located inside the housing and connected to all the sliding rods 5 extending into the housing. The mating block 12 is fixed to the sliding rod 5 by connecting to the middle part of the mounting plate 6. In this way, the weight of the mating block 12 can be evenly distributed on each sliding rod 5, ensuring that each sliding rod 5 is subjected to balanced force, thereby ensuring that the moving clamp 2b moves smoothly and stably as the fabric 10 thickness changes.

[0050] Example 3

[0051] like Figure 2 , Figure 4 and Figure 5 As shown, based on Embodiment 2, a limiting part 7 is provided inside the housing to limit the displacement of the mating block 12 toward the displacement sensor 11. This protects the displacement sensor 11 and prevents the mating block 12 from damaging it.

[0052] Example 4

[0053] like Figures 1 to 5 As shown, based on Embodiment 2 or Embodiment 3, the elastic element 3 corresponds one-to-one with the sliding rod 5, and the carrier 4 is equipped with a mounting rod 8 that corresponds one-to-one with the sliding rod 5. One end of the elastic element 3 abuts against the abutting part 9 on the mounting rod 8, and the other end abuts against the abutting part 9 on the sliding rod 5.

[0054] Example 5

[0055] like Figures 1 to 5As shown, based on Embodiment 4, the distance between the two contact portions 9 that abut against the same elastic element 3 is adjustable.

[0056] In this way, the preload of the elastic element 3 can be easily adjusted, thereby making it easy to adjust the pressure applied to the fabric 10 by the clamping member 2.

[0057] There are many ways to adjust the distance between the two abutting parts 9 that abut against the same elastic element 3. For example, at least one abutting part 9 can be set as a nut or a nut-like component, which can be rotated. Alternatively, the mounting rod 8 can be threaded onto the carrier 4, and the distance between the corresponding two abutting parts 9 can be adjusted by rotating the mounting rod 8. Preferably, the latter is preferred, with one end of the mounting rod 8 extending out of the housing, so that the preload of the elastic element 3 can be adjusted without opening the housing.

[0058] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A fabric thickness online measuring device, characterized in that, It includes a displacement measuring mechanism (1) and two opposing clamping parts (2); wherein, One clamping member (2) is a fixed clamping member (2a), and the other clamping member (2) is a movable clamping member (2b). The movable clamping member (2b) presses the fabric (10) to be conveyed onto the fixed clamping member (2a) under the action of the elastic element (3); or both clamping members (2) are movable clamping members (2b), and together clamp the fabric (10) to be conveyed under the action of the corresponding elastic element (3). The displacement measuring mechanism (1) is used to measure the relative displacement of the two clamps (2) to measure the thickness of the fabric (10) online.

2. The online fabric thickness measuring device according to claim 1, characterized in that, The opposing surfaces of the two clamping parts (2) are both planes and are parallel to each other.

3. The online fabric thickness measuring device according to claim 2, characterized in that, At least one clamping member (2) is bowl-shaped and has its opening facing away from the fabric (10). Or at least one clamping element (2) is flat; Or at least one clamping element (2) is in the shape of a seesaw with both ends facing away from the fabric (10).

4. The online fabric thickness measuring device according to claim 1, characterized in that, It also includes a carrier (4) corresponding to each of the movable clamping member (2b), the movable clamping member (2b) being slidably mounted on the carrier (4) via at least two sliding rods (5).

5. The online fabric thickness measuring device according to claim 4, characterized in that, The support body (4) is a box, and the elastic element (3) is located inside the box and acts on the part of the sliding rod (5) that extends into the box.

6. The online fabric thickness measuring device according to claim 5, characterized in that, The displacement measuring mechanism (1) includes a displacement sensor (11) corresponding to the movable clamping member (2b). The displacement sensor (11) is installed in the housing. The part of the movable clamping member (2b) that extends into the housing or the part of the sliding rod (5) that extends into the housing is fixed with a mating block (12) that cooperates with the displacement sensor (11).

7. The online fabric thickness measuring device according to claim 6, characterized in that, It also includes a mounting plate (6), which is located inside the box and connected to all the sliding rods (5) extending into the box. The mating block (12) is fixed to the sliding rods (5) by being connected to the mounting plate (6).

8. The online fabric thickness measuring device according to claim 6, characterized in that, The housing is provided with a limiting part (7) for limiting the amount of displacement of the mating block (12) toward the displacement sensor (11).

9. The online fabric thickness measuring device according to claim 4, characterized in that, The elastic element (3) corresponds to the sliding rod (5) one by one. The carrier (4) is equipped with a mounting rod (8) that corresponds to the sliding rod (5) one by one. One end of the elastic element (3) abuts against the abutting part (9) on the mounting rod (8), and the other end abuts against the abutting part (9) on the sliding rod (5).

10. The online fabric thickness measuring device according to claim 9, characterized in that, The distance between the two contact parts (9) that abut against the same elastic element (3) is adjustable.

11. The online fabric thickness measuring device according to claim 10, characterized in that, The mounting rod (8) is threaded onto the carrier (4) so ​​that the distance between the two corresponding abutment parts (9) can be adjusted by rotating the mounting rod (8).

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