Waist tightening tester

Abstract

The present invention relates to the field of disposable sanitary product production equipment, and in particular to a waist tightening tester capable of detecting waist tightness to improve wearing comfort. The waist tightening tester comprises a base, a pillar, a mounting seat, a control system, a servo motor, a transmission assembly, a ball screw, a support plate, a plurality of soft support strips and an elastic sleeve. The pillar is vertically fixed on the base, the mounting seat is arranged on the upper part of the pillar, the ball screw is arranged on the mounting seat along the vertical direction, the support plate is arranged on the ball screw, the support strips are distributed on the circumference of the ball screw, and the upper and lower ends of the support strips are respectively hinged to the mounting seat and the support plate, the elastic sleeve is arranged on the outside of the support strip, the servo motor is connected to the ball screw through the transmission assembly, the control system comprises a controller and a plurality of pressure sensors arranged on the outside of the elastic sleeve, each pressure sensor is electrically connected to the input end of the controller, and the servo motor is electrically connected to the output end of the controller.

Description

Technical Field

[0001] The invention relates to the field of disposable sanitary product production equipment, in particular to a waist tightening tester. Background Art

[0002] Currently, there are no regulations for waist compression force for baby diapers, adult diapers, panty diapers, or panty sanitary napkins. Manufacturers only test the stretch ratio, resulting in varying waist sizes and compression force within the same package. Large, medium, and small sizes from different manufacturers are irreplaceable, forcing first-time users to rely on trial and error when selecting a product. In particular, baby diapers are labeled with a suitable weight range, not a waist circumference. This means that even people with the same weight may have different belly sizes. Furthermore, the number of elastic bands and their tension are not tested, resulting in varying waist compression force during wear, making the wearer either too tight or too loose. A high compression force can cause skin redness and swelling, while a low compression force can make the wearer too tight and prone to falling off during exercise. Pull-ups are not adjustable, compromising their comfort.

[0003] Therefore, the applicant has developed a waist tightening tester that can detect waist tightening to quantify waist circumference data, thereby meeting the R&D personnel's in-depth design of the waist circumference and improving the comfort of wearing. Summary of the Invention

[0004] Therefore, in order to solve the above problems, the present invention provides a waist tightening tester capable of detecting waist tightening to improve wearing comfort.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A waist tightening tester includes a base, a pillar, a mounting seat, a control system, a servo motor, a transmission assembly, a ball screw, a support plate, a plurality of soft support bars and an elastic sleeve. The pillar is vertically fixed on the base, the mounting seat is arranged on the upper part of the pillar, the ball screw is arranged on the mounting seat along the vertical direction, the support plate is arranged on the ball screw, each of the support bars is distributed on the circumference of the ball screw, and the upper and lower ends of the support bars are respectively hinged to the mounting seat and the support plate, the elastic sleeve is arranged on the outside of the support bar, the servo motor is connected to the ball screw through the transmission assembly, the control system includes a controller and a plurality of pressure sensors arranged on the outside of the elastic sleeve, each of the pressure sensors is electrically connected to the input end of the controller, and the servo motor is electrically connected to the output end of the controller.

[0007] Furthermore, a guide column is provided on the mounting seat and between the support bar and the ball screw, each of the guide columns is distributed parallel to the ball screw, and a guide hole cooperating with the guide column is provided on the support plate.

[0008] Furthermore, each of the support bars is in an arc-shaped structure, and its concave surface faces the ball screw.

[0009] Furthermore, each of the support bars forms an elliptical structure, and the support bars include at least three first support bars distributed on the front side, at least three second support bars distributed on the rear side, and at least two third support bars distributed on both sides.

[0010] Furthermore, the curvature radius of the first support bar is smaller than the curvature radius of the second support bar.

[0011] Furthermore, a first support piece with an arc-shaped structure is provided on the outer side of the vertical middle portion of the first support bar, and a second support piece with an arc-shaped structure is provided on the outer side of the vertical middle portion of the second support bar.

[0012] Furthermore, the pressure sensor includes at least three first pressure sensors distributed on the first support sheet and at least one second pressure sensor distributed on the second support sheet, and the first pressure sensors are evenly distributed along the width direction of the first support sheet.

[0013] Furthermore, the height of the first pressure sensor is smaller than the height of the second pressure sensor.

[0014] Furthermore, the first support bar and the second support bar are provided with infrared ranging sensors, and the infrared ranging sensors are electrically connected to the controller.

[0015] Furthermore, the transmission assembly includes a driving pulley provided on the output end of the servo motor, a driven pulley provided on the ball screw, and a belt wound around the driving pulley and the driven pulley.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are: BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0018] Figure 2 1 is a schematic top view of the structure of the support plate, support bars, first support sheet and second support sheet in an embodiment of the present invention;

[0019] Figure 3 1 is a front view structural diagram of the support bar, the elastic sleeve, the first support plate and the clamping assembly in an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic structural diagram of the clamping assembly in an open state according to an embodiment of the present invention;

[0022] Figure 6 It is a circuit module diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0024] The embodiments of the present invention are:

[0025] refer to Figure 1 and Figure 6 As shown, a waist tightening tester includes a base 1, a pillar 2, a mounting seat 3, a control system 4, a servo motor 5, a transmission assembly 6, a ball screw 7, a support plate 8, a plurality of soft support strips 9 and an elastic sleeve 10. The pillar 2 is vertically fixed on the base 1, the mounting seat 3 is arranged on the upper part of the pillar 2, the ball screw 7 is arranged on the mounting seat 3 along the vertical direction, the support plate 8 is arranged on the ball screw 7, and each of the support strips 9 is distributed on the circumference of the ball screw 7, and the upper and lower ends of the support strips 9 are hinged to the mounting seat 3 and the support plate 8 respectively. The elastic sleeve 10 is sleeved on the outside of the support bar 9, and the servo motor 5 is connected to the ball screw 7 through the transmission assembly 6. The control system 4 includes a controller 41 and several pressure sensors 42 arranged on the outside of the elastic sleeve 10. Each of the pressure sensors 42 is electrically connected to the input end of the controller 41, and the servo motor 5 is electrically connected to the output end of the controller 41. The transmission assembly 6 includes a driving pulley 61 provided on the output end of the servo motor 5, a driven pulley 62 provided on the ball screw 7, and a belt 63 wrapped around the driving pulley 61 and the driven pulley 62.

[0026] This waist tightening tester is a device that sets the waist area of ​​a diaper, a pant-type diaper or a pant-type sanitary napkin on an elastic sleeve 10, and controls the servo motor 5 through the control system 4 to drive the ball screw 7 to rotate, so that the support plate 8 moves upward, thereby squeezing each support bar 9, so that the middle part of the support bar 9 bulges outward and bends to simulate the human waist. When the waist size reaches the target value, the value of the waist area is detected by the pressure sensor 42, and the material, size and waist size of the applicable person involved in the product are adjusted by the controller 41. At the same time, the value of the pressure sensor 42 is stored for reference by R&D personnel. The two judgment methods improve reliability. Through the testing method, it is convenient for R&D personnel to improve the product to improve the comfort of the product.

[0027] In actual use, in addition to the mismatch between the waist size and the user's waist circumference, the material settings, the material of the elastic band, the elasticity of the elastic band, the setting distance of the Lycra and the material of the Lycra all affect the tightening force of the waist circumference. In addition, changes in the waist circumference when the user is active or eating will affect the tightening force.

[0028] Therefore, the control method of the control system includes the following steps:

[0029] 1) Pre-enter the specifications and dimensions of the diapers, pant diapers, or pant sanitary napkins to be tested;

[0030] 2) The controller 41 determines the waist size A to be stretched on the elastic sleeve 10 and the waist size variation interval [AB, A+B] based on the product specifications and dimensions, and stretches the elastic sleeve 10 to the waist size A;

[0031] 3) Put the product on the elastic sleeve 10;

[0032] 4) The pressure sensor 42 detects the product pressure value C0 when the elastic sleeve 10 is in step 2. When the waist circumference of the elastic sleeve 10 is adjusted to AB, the pressure sensor 42 detects the product pressure value C1. The waist circumference of the elastic sleeve 10 is gradually increased from AB to A+B. At the same time, the pressure sensor 42 detects the pressure in real time and generates a curve graph.

[0033] 5) The elastic sleeve 10 is lifted again to a pressure value C2 when the waist circumference dimension is A, and the elastic sleeve 10 is lifted again to a pressure value C3 when the waist circumference dimension is A+B;

[0034] 6) The controller 41 determines (((C1-C0)3+(C2-C0)3+(C3-C0)3) / 3). When the ratio is [-0.95, 0.95], it is a high-quality product. When the interval is [-1.2, -0.95] or [0.95, 1.2], the material needs to be adjusted, and the ratio of C1 / C0 is determined. When the ratio is [0.8, 1.05], the material and quantity of the rubber band are adjusted to change its expansion and contraction rate. When the interval is less than -1.2 or greater than 1.2, the material needs to be adjusted.

[0035] Through the above control method, it is easy to judge the waist quality of the product, which can provide a reference for R&D personnel and is conducive to improving the product, so that products with higher comfort can be produced.

[0036] In this embodiment, a guide column 11 is provided on the mounting seat 3 and between the support bar 9 and the ball screw 7. Each guide column 11 is distributed parallel to the ball screw 7. A guide hole 12 that cooperates with the guide column 11 is provided on the support plate 8, so that the operation stability of the support plate 8 is improved when the support plate 8 is driven to move.

[0037] And, reference Figure 2As shown, each of the support bars 9 is an arc-shaped structure, and its concave surface faces the ball screw 7. Each of the support bars 9 forms an elliptical structure. The support bars 9 include three first support bars 91 distributed on the front side, four second support bars 92 distributed on the back side, and two third support bars 93 distributed on both sides in the horizontal direction. The curvature radius of the first support bar 91 is smaller than the curvature radius of the second support bar 92. A first support piece 13 with an arc-shaped structure is provided on the outer side of the vertical middle part of the first support bar 91, and a second support piece 14 with an arc-shaped structure is provided on the outer side of the vertical middle part of the second support bar 92, which facilitates the elastic bending deformation of the support bar 9, thereby forming curves on the front and back sides of the waistline, improving the simulation effect, and the first support piece 13 and the second support piece 14 provided at the same time make the product have good support when worn, which is beneficial to improving the detection accuracy of the pressure sensor 42.

[0038] At the same time, the pressure sensor 42 includes three first pressure sensors 421 distributed at the first support plate 13 and one second pressure sensor 422 distributed at the second support plate 14. The first pressure sensors 421 are evenly distributed along the width direction of the first support plate 13. The distribution and coordination of the three first pressure sensors 421 and the one second pressure sensor 422 further improves the detection accuracy. When calculating the C0 value, C1 value, C2 value and C3 value of the above-mentioned pressure sensor 42, the values ​​detected by the three first pressure sensors 421 are distributed as D1, D2 and D3, and the value detected by the second pressure sensor 422 is D4. It is pre-judged that (((D1-D4)+(D2-D4)+(D3-D4)) / 3) / D4. When the calculated value is between [-0.8,0.8], the data is judged to be accurate, and the average value (D1+D2+D3+D4) / 4 is taken as the C0 value, C1 value, C2 value and C3 value of the pressure sensor 42.

[0039] In this embodiment, the height dimension of the first pressure sensor 421 is smaller than the height dimension of the second pressure sensor 422, so that the position of force detection is prepared, further improving the accuracy of detection, and the first support bar 91 and the second support bar 92 are provided with an infrared ranging sensor 15, and the infrared ranging sensor 15 is electrically connected to the controller 41, thereby improving the accuracy of the controller 41 in controlling the waist size of the elastic sleeve 10.

[0040] In this embodiment, reference Figure 3 、 Figure 4 and Figure 5As shown, a clamping assembly 20 is provided on the elastic sleeve 10 and located on the upper side of the first support piece 13 and the second support piece 14. The clamping assembly 20 includes a clamping seat 201 fixed on the support bar 9, and a first clamping piece 202 with flexibility is provided along the outer end of the clamping seat 201. A second clamping piece 203 is hinged on the clamping seat 201 and located between the first clamping piece 202 and the first support piece 13 or the second support piece 14. When the curvature radius of the support bar 9 is small, the free end of the first clamping piece 202 abuts against the second clamping piece 203. When the curvature radius of the support bar 9 gradually increases, the first clamping piece 202 separates from the second clamping piece 203, so that when the product is first worn on the elastic sleeve 10, it is clamped by the clamping assembly 20. When the waist size of the elastic sleeve 10 increases and gradually forms the waist size of the human body, the product is fixed by the structure of its waist curve, so that the product is worn accurately and has little impact on the operation of the pressure sensor 42 during the detection process.

[0041] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A waist tightening tester, characterized by: It includes a base, a pillar, a mounting seat, a control system, a servo motor, a transmission assembly, a ball screw, a support plate, a plurality of flexible support bars and an elastic sleeve, wherein the pillar is vertically fixed on the base, the mounting seat is arranged on the upper part of the pillar, the ball screw is arranged on the mounting seat along the vertical direction, the support plate is arranged on the ball screw, each of the support bars is distributed on the circumference of the ball screw, and the upper and lower ends of the support bars are hinged to the mounting seat and the support plate respectively, the elastic sleeve is arranged on the outside of the support bar, the servo motor is connected to the ball screw through the transmission assembly, the control system includes a controller, a plurality of pressure sensors arranged on the outside of the elastic sleeve, each of the pressure sensors is electrically connected to the input end of the controller, and the servo motor is electrically connected to the output end of the controller; Each of the support bars forms an elliptical structure, and the support bars include at least three first support bars distributed on the front side, at least three second support bars distributed on the rear side, and at least two third support bars distributed on both sides in the transverse direction. The curvature radius of the first support bar is smaller than the curvature radius of the second support bar. A first support piece with an arc-shaped structure is provided on the outer side of the vertical middle portion of the first support bar, and a second support piece with an arc-shaped structure is provided on the outer side of the vertical middle portion of the second support bar. The elastic sleeve is provided with a clamping assembly on the upper side of the first support piece and the second support piece. The clamping assembly includes a clamping seat fixed to the support bar, and a first flexible clamping piece is provided along the outer end of the clamping seat. The second clamping piece is hinged on the clamping seat and located between the first clamping piece and the first support piece or the second support piece. When the curvature radius of the support bar is small, the free end of the first clamping piece rests on the second clamping piece. When the curvature radius of the support bar gradually increases, the first clamping piece is separated from the second clamping piece, so that when the product is first worn on the elastic sleeve, it is clamped by the clamping assembly. When the waist circumference size of the elastic sleeve increases and gradually forms the waist circumference size of the human body, the product is fixed by the structure of its waist curve.

2. The waist tightening tester according to claim 1, characterized in that: A guide column is provided on the mounting seat and between the support bar and the ball screw. Each of the guide columns is distributed parallel to the ball screw. A guide hole that cooperates with the guide column is provided on the support plate.

3. The waist tightening tester according to claim 1 or 2, characterized in that: Each of the support bars is in an arc-shaped structure, and its concave surface faces the ball screw.

4. The waist tightening tester according to claim 3, characterized in that: The pressure sensors include at least three first pressure sensors distributed on the first support sheet and at least one second pressure sensor distributed on the second support sheet. The first pressure sensors are evenly distributed along the width direction of the first support sheet.

5. The waist tightening tester according to claim 4, characterized in that: The height of the first pressure sensor is smaller than the height of the second pressure sensor.

6. The waist tightening tester according to claim 3, characterized in that: Infrared distance measuring sensors are provided on the first support bar and the second support bar, and the infrared distance measuring sensors are electrically connected to the controller.

7. The waist tightening tester according to claim 1, characterized in that: The transmission assembly comprises a driving pulley arranged on the output end of the servo motor, a driven pulley arranged on the ball screw, and a belt wound around the driving pulley and the driven pulley.

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