Flash non-woven fabric uniformity detection equipment and production line

Abstract

The invention provides flash non-woven fabric uniformity detection equipment and a production line, and the equipment comprises a conveying device used for driving flash non-woven fabric to be conveyed in a first direction, a dust removal device used for removing dust on the surface of the flash non-woven fabric, a detection box arranged at the discharge end of the conveying device and attached to the dust removal device, and a light source assembly arranged at the discharge end of the conveying device and attached to the dust removal device. The light source assembly is arranged on the detection box and used for emitting light rays to irradiate the upper surface of the flash non-woven fabric, the light intensity sensing assembly is arranged on the conveying device, arranged under the light source assembly and used for receiving the light intensity of the lower surface of the flash non-woven fabric, the first laser module is arranged on the detection box and located above the flash non-woven fabric, and the second laser module is arranged on the conveyor and used for emitting light rays to irradiate the upper surface of the flash non-woven fabric. And the baffle plate is positioned below the flash non-woven fabric. The flash evaporation non-woven fabric uniformity detection device has the beneficial effects that uniformity detection of flash evaporation non-woven fabrics with different thicknesses is realized, the universality is relatively high, the detection efficiency is improved, the detection precision is improved, and the yield is improved.

Description

Technical Field

[0001] The invention relates to the field of flash spinning equipment, and in particular to a flash nonwoven fabric uniformity detection device and a production line. Background Art

[0002] In the prior art, it is generally necessary to sample and test the non-woven fabric after it is rolled up. Since the uniformity detection equipment cannot be connected to the non-woven fabric production line, it is impossible to perform uniformity detection on the continuously produced non-woven fabric, which affects the adjustment of the non-woven fabric production parameters, easily produces a large amount of waste, causes a waste of raw materials, and has a low yield rate. At the same time, in the prior art, general uniformity detection equipment can only perform uniformity detection on non-woven fabrics of a single thickness, has poor versatility, cannot be adjusted synchronously according to the thickness change of the non-woven fabric, and has low detection efficiency.

[0003] At present, in the field of flash spinning, the uniformity detection of the flash non-woven fabric production process also faces the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In order to solve the above problems in the prior art, the present invention provides a flash nonwoven fabric uniformity detection device and a production line.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A flash nonwoven fabric uniformity detection device, comprising:

[0009] The conveying device is used for driving the flash-steamed non-woven fabric to be conveyed in a first direction.

[0010] The dust removal device is arranged at the feeding end of the conveying device and is used for removing dust from the surface of the flash-steamed non-woven fabric.

[0011] The detection box is used to provide a dark environment. It is arranged at the discharge end of the conveying device and is close to the dust removal device.

[0012] The light source assembly and the light source module are arranged in the detection box and are used for emitting light to illuminate the upper surface of the flash-steamed non-woven fabric.

[0013] The light intensity sensing component is arranged on the conveying device and directly below the light source component, and is used to receive the light intensity on the lower surface of the flash-evaporated non-woven fabric.

[0014] The first laser module is disposed in the detection box and is located above the flash-steamed non-woven fabric. The first laser module emits laser to measure a first distance h1 from the first laser module to the upper surface of the flash-steamed non-woven fabric.

[0015] The second laser module is installed on the conveyor and is located below the flash steamed non-woven fabric. The laser is emitted to measure the second distance h2 from the second laser module to the lower surface of the flash steamed non-woven fabric. The fixed distance between the first laser module and the second laser module in the vertical direction is H.

[0016] The first laser module measures the first distance h1, the second laser module measures the second distance h2, the thickness of the flash-steamed non-woven fabric h=H-h1-h2 is measured, and the light transmittance of the flash-steamed non-woven fabrics of different thicknesses is measured.

[0017] Preferably, it also includes a width measuring module, which is arranged in the dust removal device, and the width measuring module is used to measure the width of the flash-steamed non-woven fabric. The width direction of the flash-steamed non-woven fabric is parallel to the second direction. The light intensity sensing component includes a driving unit, a diamond connecting rod, and a light intensity sensor. The output end of the driving unit is provided with a diamond connecting rod, and the diamond connecting rod is evenly distributed with light intensity sensors. The driving unit drives the first hinge part and the second hinge part of the diamond connecting rod arranged along the second direction to move toward or away from each other, so that the detection range of the light intensity sensor corresponds to the width of the flash-steamed non-woven fabric.

[0018] Preferably, the driving unit includes a driving motor, a lead screw, and a bearing seat. The driving motor is arranged on the conveying device. The output end of the driving motor is fixed to one end of the lead screw, and the other end of the lead screw is rotatably connected to the bearing seat. The lead screw extends along the second direction and passes through the first hinge part and the second hinge part in sequence. The lead screw has a first thread segment and a second thread segment with opposite thread rotation directions. The first hinge part is provided with a first internal thread corresponding to the first thread segment, and the second hinge part is provided with a second internal thread corresponding to the second thread segment.

[0019] The driving motor drives the lead screw to rotate, thereby driving the first hinged part and the second hinged part to move toward or away from each other.

[0020] Preferably, the diamond-shaped connecting rod includes a first connecting rod, a second connecting rod, a first connecting plate, a second connecting plate, and a guide shaft. The first connecting rod and the second connecting rod are arranged opposite to each other. A first hinge portion is provided in the middle of the first connecting rod, and a second hinge portion is provided in the middle of the second connecting rod. One end of the first connecting rod and the second connecting rod are hinged to the first connecting plate, and the other ends of the first connecting rod and the second connecting rod are hinged to the second connecting plate. The guide shaft is arranged along the first direction, and both ends pass through the first connecting plate, the second connecting plate and are fixed to the conveying device.

[0021] Preferably, an opening for passing the flash-steamed non-woven fabric is provided at one end of the detection box away from the dust removal device, and the opening is provided with a light-blocking assembly, which includes an electric cylinder and a light-blocking plate. The electric cylinder is fixed to the outer wall of the detection box, and a light-blocking plate is provided at the output end of the electric cylinder.

[0022] Among them, the electric cylinder drives the light blocking plate to block the opening.

[0023] Preferably, the light-blocking plate includes a plate body, a light-blocking column, and an elastic member, the plate body is evenly distributed with countersunk holes, the light-blocking column passes through the countersunk holes, and a limiting nut is provided on the top, a limiting boss is provided in the middle of the light-blocking column, the elastic member is provided in the countersunk hole, and is sleeved on the light-blocking column, one end of the elastic member is abutted against the countersunk hole, and the other end is abutted against the limiting boss, and the elastic member has a tendency to push the light-blocking column to move downward.

[0024] The electric cylinder drives the plate to cover the opening, and the light-blocking column located directly above the flash-steamed non-woven fabric compresses the elastic member, and the lower end of the light-blocking column contacts the upper surface of the flash-steamed non-woven fabric.

[0025] Preferably, two sets of shading components are provided near the detection box of the conveying device, and the shading components are used to block the gap between the flash-steamed non-woven fabric and the conveying device. The two sets of shading components are arranged relatively to each other in the second direction. The shading components include a stepper motor, a shading plate, and an accordion cover. A shading plate is provided at the output end of the stepper motor. The accordion cover extends along the second direction, and one end is fixed to the conveying device, and the other end is fixed to the end of the shading plate away from the flash-steamed non-woven fabric.

[0026] Preferably, the shading plate includes a first plate body, a second plate body and a third plate body. The first plate body extends in a vertical direction and is fixed to a stepper motor. The first plate body is fixed to one end of the accordion cover. The top of the first plate body is bent obliquely upward in a direction close to the flash-steamed non-woven fabric to form a second plate body. The top of the second plate body is bent obliquely downward in a direction close to the flash-steamed non-woven fabric to form a third plate body.

[0027] Preferably, the number of the first laser modules and the number of the second laser modules are the same, and are at least two.

[0028] The present invention also provides a flash non-woven fabric production line, including any of the above-mentioned flash non-woven fabric uniformity detection devices, and also including a discharging component, a winding component, and a dust cover. The discharging component is used to discharge the flash non-woven fabric after it is formed. The discharging end of the discharging component is connected to the feeding end of the conveying device. The discharging end of the conveying device is provided with a dust cover, and the other end of the dust cover is provided with a winding component.

[0029] (III) Beneficial effects

[0030] The beneficial effects of the present invention are as follows: by adopting the above technical scheme, light is emitted through the light source component to irradiate the upper surface of the flash steamed non-woven fabric, and the light intensity of the lower surface of the flash steamed non-woven fabric is received through the light intensity sensing component. At the same time, the transmittance of flash steamed non-woven fabrics of different thicknesses is measured through the cooperation of the first laser module, the second laser module and the light source component, and the standard dynamic range is determined by the transmittance. If more than 90% of the measured transmittance data is within the standard dynamic range, it indicates that the uniformity of the flash steamed non-woven fabric is good. Otherwise, it indicates that the uniformity of the flash steamed non-woven fabric is poor, and the uniformity detection of flash steamed non-woven fabrics of different thicknesses is realized, the versatility is strong, and the detection efficiency is improved. In addition, a dust removal device is provided, and the surface of the flash steamed non-woven fabric can be dusted before the uniformity detection of the flash steamed non-woven fabric to improve the detection accuracy. At the same time, the flash-steamed non-woven fabric uniformity detection equipment of the present invention can be directly connected to the continuous production line of the flash-steamed non-woven fabric, and the uniformity of the flash-steamed non-woven fabric can be detected during the production process of the flash-steamed non-woven fabric. The production parameters of the flash-steamed non-woven fabric can be adjusted in real time according to the uniformity of the flash-steamed non-woven fabric, thereby avoiding the production of a large amount of waste and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a flash steamed nonwoven fabric uniformity detection device.

[0032] Figure 2 This is a structural schematic diagram of a flash nonwoven fabric uniformity detection device from another perspective.

[0033] Figure 3 It is a cross-sectional view of a flash-steamed nonwoven fabric uniformity detection device.

[0034] Figure 4 It is a structural schematic diagram of the light source component.

[0035] Figure 5 This is a top view of the light intensity sensing component.

[0036] Figure 6 It is a structural schematic diagram of the light intensity sensing component.

[0037] Figure 7 It is a structural schematic diagram of the light blocking component.

[0038] Figure 8 A cross-sectional view of a light blocking component.

[0039] Fig. 9 It is a structural schematic diagram of the shading component.

[0040] [Description of Reference Numerals]

[0041] 1. Conveying device.

[0042] 2. Dust removal device.

[0043] 3. Testing box.

[0044] 4. Light source assembly, 41. Lifting mechanism, 42. Light source module.

[0045] 5. Light intensity sensing component, 51. Driving unit, 511. Driving motor, 512. Lead screw; 513. Bearing seat, 52. Diamond connecting rod, 521. First connecting rod, 5211. First hinge part, 522. Second connecting rod, 5221. Second hinge part, 523. First connecting plate, 524. Second connecting plate, 525. Guide shaft, 53. Light intensity sensor.

[0046] 6. The first laser module.

[0047] 7. The second laser module.

[0048] 8. light blocking assembly, 81. electric cylinder, 82. light blocking plate, 821. plate body, 8211. countersunk hole, 822. light blocking column, 8221. limiting nut, 8222. limiting boss, 823. elastic member.

[0049] 9. Width measurement module.

[0050] 10. Shading assembly, 101. Stepping motor, 102. Shading plate, 1021. First plate, 1022. Second plate, 1023. Third plate, 103. Organ cover.

[0051] X, first direction, Y, second direction. DETAILED DESCRIPTION

[0052] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0053] See also Figures 1 to 9 The present invention provides a flash nonwoven fabric uniformity detection device, comprising: a conveying device 1, a dust removal device 2, a detection box 3, a light source assembly 4, a first laser module 6, and a second laser module 7. For ease of description, refer to Figure 1 , the length direction of the conveying device 1 is defined as the first direction X, and the width direction is defined as the second direction Y.

[0054] Among them, the conveying device 1 is used to drive the flash steamed non-woven fabric to be conveyed in the first direction X, and is centrally arranged on the conveying device 1. In the present embodiment, the conveying device 1 adopts a roller conveyor, which can be purchased directly to reduce the design cost. Before the uniformity test of the flash steamed non-woven fabric is carried out, there is dust or foreign matter attached to the flash steamed non-woven fabric, which affects the detection accuracy. Therefore, a dust removal device 2 is provided, which is arranged at the feed end of the conveying device 1 and is used to remove dust from the surface of the flash steamed non-woven fabric. In the present embodiment, the dust removal device 2 uses an ion dust removal device 2. Since static electricity is easily generated during the production process of the flash steamed non-woven fabric, the ion dust removal device 2 can remove dust and static electricity and reduce the hazards of static electricity. The detection box 3 is mainly used to provide a dark environment for the light source component 4 to prevent external light from affecting the detection results. See. Figure 1 The detection box 3 is arranged at the discharge end of the conveying device 1 and is arranged in close contact with the dust removal device 2. The light source component 4 is arranged in the detection box 3 and is used to emit light to illuminate the upper surface of the flash steamed non-woven fabric. The light intensity sensing component 5 is arranged in the conveying device 1 and is arranged directly below the light source component 4 to receive the light intensity of the lower surface of the flash steamed non-woven fabric.

[0055] The working principle of the present invention for measuring the uniformity of flash-steamed non-woven fabrics is as follows: by measuring the light intensity on the lower surface of the flash-steamed non-woven fabrics and the light intensity of the light source, the data is processed to obtain the transmittance of the flash-steamed non-woven fabrics within the detection range of the light intensity sensing component, and then the measured transmittance data is processed. If more than 90% of the transmittance data of this group is within the standard dynamic range, it indicates that the uniformity of the detected flash-steamed non-woven fabrics is good; otherwise, it indicates that the obtained transmittance data fluctuates greatly, and the fibers in multiple areas of the measured flash-steamed non-woven fabrics are unevenly laid. If the transmittance data of multiple groups of products detected do not meet the above-mentioned good uniformity, it is necessary to adjust the production process parameters or equipment of the flash-steamed non-woven fabrics.

[0056] In the present invention, the light intensity of the light source assembly 4 can be adjusted within the range of 0-10000 lux. In order to facilitate the description of the standard dynamic range, in a specific embodiment, the light intensity used by the light source module 4 is 4000 lux. When the gram weight of the flash-steamed non-woven fabric detected is between 40g / ㎡ and 49g / ㎡, the corresponding standard dynamic range is ±3% of the average value of the measured transmittance data, that is, the average transmittance of this group of data is 27.51%. If more than 90% of the transmittance data of this group is between 24.51% and 30.51% (standard dynamic range), it indicates that the uniformity of the flash-steamed non-woven fabric is good, otherwise, the uniformity is poor. It should be noted that the flash-steamed non-woven fabrics of different gram weight ranges have different corresponding standard dynamic ranges.

[0057] Since flash-steamed nonwoven fabrics of different thicknesses have different corresponding light transmittances, when performing uniformity testing on the flash-steamed nonwoven fabrics, it is necessary to first measure the thickness of the flash-steamed nonwoven fabrics and make the measured light transmittance and thickness correspond one to one. Figure 3 The first laser module 6 is provided in the detection box 3 and is located above the flash steamed non-woven fabric. The laser is emitted to measure the first distance h1 from the first laser module 6 to the upper surface of the flash steamed non-woven fabric. The second laser module 7 is provided in the conveyor and is located below the flash steamed non-woven fabric. The laser is emitted to measure the second distance h2 from the second laser module 7 to the lower surface of the flash steamed non-woven fabric. The fixed distance between the first laser module 6 and the second laser module 7 in the vertical direction is H. Among them, the first laser module 6 measures the first distance h1, the second laser module 7 measures the second distance h2, and the thickness of the flash steamed non-woven fabric is measured as h=H-h1-h2.

[0058] In some embodiments, the light intensity range of the light source is 0-10000 lux, and the standard dynamic range corresponding to flash-steamed non-woven fabrics of different thicknesses is shown in the following table:

[0059]

[0060] In this embodiment, the light source assembly 4 includes a lifting mechanism 41 and a light source module 42. Figure 3 The lifting mechanism 41 is fixed to the detection box 3, and the light source module 42 is arranged in the detection box 3 for emitting light. The light source module 42 includes a plurality of LED light sources arranged in an array. By synchronously adjusting the light intensity of each LED light source, the irradiation light intensity of the flash steamed non-woven fabric can be adjusted. Among them, the lifting mechanism 41 can adjust the installation height of the light source module 42, so as to fine-tune the irradiation light intensity of the flash steamed non-woven fabric, and the light intensity regulation is more precise.

[0061] In order to further improve the versatility of the flash steamed non-woven fabric uniformity detection device of the present invention, the flash steamed non-woven fabric uniformity detection device of the present invention can also detect the uniformity of flash steamed non-woven fabrics of different widths, that is, detect the uniformity of flash steamed non-woven fabrics of different widths and different thicknesses. The principle of judging the uniformity of flash steamed non-woven fabrics is the same and will not be repeated here. Therefore, in this embodiment, it also includes a width measuring module 9, which is arranged in the dust removal device 2. The width measuring module 9 is used to measure the width of the flash steamed non-woven fabric. The width direction of the flash steamed non-woven fabric is parallel to the second direction Y. In order to make the detection range of the light intensity sensing component 5 change synchronously with the width change of the flash steamed non-woven fabric, refer to Figure 4 , Figure 5 , Figure 6The light intensity sensing component 5 includes a driving unit 51, a diamond connecting rod 52, and a light intensity sensor 53. The output end of the driving unit 51 is provided with a diamond connecting rod 52, and the light intensity sensors 53 are evenly distributed on the diamond connecting rod 52. The driving unit 51 drives the first hinge part 5211 and the second hinge part 5221 of the diamond connecting rod 52 arranged along the second direction Y to move toward or away from each other, so that the detection range of the light intensity sensor 53 corresponds to the width of the flash-steamed non-woven fabric.

[0062] Specifically, see Figure 6 The driving unit 51 includes a driving motor 511, a lead screw 512, and a bearing seat 513, wherein the driving motor 511 is arranged on the conveying device 1, the output end of the driving motor 511 is fixed to one end of the lead screw 512, and the other end of the lead screw 512 is rotatably connected to the bearing seat 513, and the lead screw 512 extends along the second direction Y and passes through the first hinge part 5211 and the second hinge part 5221 in sequence. In order to facilitate driving the first hinge part 5211 and the second hinge part 5221, the lead screw 512 has a first thread segment and a second thread segment with opposite thread rotation directions, the first hinge part 5211 is provided with a first internal thread corresponding to the first thread segment, and the second hinge part 5221 is provided with a second internal thread corresponding to the second thread segment. Among them, the driving motor 511 drives the screw 512 to rotate, and then drives the first hinge part 5211 and the second hinge part 5221 to move toward or away from each other. Since the light intensity sensor 53 is arranged on the diamond connecting rod 52, and the width of the diamond connecting rod 52 in the second direction Y can be changed, the detection range of the light intensity sensor 53 is achieved to correspond to flash-steamed non-woven fabrics of different widths.

[0063] Further, in order to facilitate the design of the diamond link 52 and guide the first hinge 5211 and the second hinge when they move toward or away from each other, the diamond link 52 includes a first link 521, a second link 522, a first connecting plate 523, a second connecting plate 524, and a guide shaft 525, wherein the first link 521 and the second link 522 are arranged opposite to each other, and the first link 521 and the second link 522 are both hinged by two rods of the same length. A first hinge 5211 is provided in the middle of the first link 521, a second hinge 5221 is provided in the middle of the second link 522, one end of the first link 521 and the second link 522 are both hinged to the first connecting plate 523, and the other end of the first link 521 and the second link 522 are both hinged to the second connecting plate 524, and the guide shaft 525 is arranged along the first direction X, and the two ends pass through the first connecting plate 523 and the second connecting plate 524 and are fixed to the conveying device 1.

[0064] In this embodiment, an opening is provided at one end of the detection box 3 away from the dust removal device 2 for passing the flash steamed non-woven fabric. Since the uniformity detection of flash steamed non-woven fabrics of different thicknesses and widths can be realized, and since the size of the opening remains unchanged, when the width and thickness of the flash steamed non-woven fabric change, in order to prevent external light from entering the detection box 3 and affecting the detection result, refer to Figure 2 , Figure 6 , Figure 7 , a light shielding component 8 is provided at the opening. Specifically, the light shielding component 8 includes an electric cylinder 81 and a light shielding plate 82. The electric cylinder 81 is fixedly arranged on the outer wall of the detection box 3, and the output end of the electric cylinder 81 is provided with a light shielding plate 82. The electric cylinder 81 drives the light shielding plate 82 to shield the opening. Further, in order to make the light shielding range of the light shielding plate 82 change synchronously with the width and thickness of the flash non-woven fabric to prevent external light from entering the detection box 3, in this embodiment, refer to Figure 7 , Figure 8 The light shielding plate 82 includes a plate body 821, a light shielding column 822, and an elastic member 823, wherein the plate body 821 is evenly distributed with countersunk holes 8211, the light shielding column 822 passes through the countersunk holes 8211, and a limiting nut 8221 is provided on the top, a limiting boss 8222 is provided in the middle of the light shielding column 822, the elastic member 823 is provided in the countersunk hole 8211, and is sleeved on the light shielding column 822, one end of the elastic member 823 is against the countersunk hole 8211, and the other end is against the limiting boss 8222, and the elastic member 823 has a tendency to push the light shielding column 822 to move downward. Among them, the electric cylinder 81 drives the plate body 821 to block the opening, and the light shielding column 822 located directly above the flash non-woven fabric compresses the elastic member 823, and the lower end of the light shielding column 822 contacts the upper surface of the flash non-woven fabric. Furthermore, in order to reduce the contact area between the lower end of the light-blocking column 822 and the upper surface of the flash-steamed non-woven fabric and avoid scratching the flash-steamed non-woven fabric, the light-blocking column 822 is made of metal material and the lower end is hemispherical.

[0065] Further, see Figure 3 , Figure 4 , Figure 5 Since the width of the flash-steamed non-woven fabric changes, when the light source assembly 4 emits light, part of the light passes through the gap between the flash-steamed non-woven fabric and the conveying device 1 and enters the detection range of the light intensity detection assembly, which will affect the measurement accuracy. Therefore, in this embodiment, refer to Figure 5 , Figure 6The conveying device 1 is provided with two sets of shading components 10 near the detection box 3. The shading components 10 are used to block the gap between the flash steamed non-woven fabric and the conveying device 1. The two sets of shading components 10 are arranged relatively in the second direction Y. The shading components 10 include a stepping motor 101, a shading plate 102, and an accordion cover 103. The output end of the stepping motor 101 is provided with a shading plate 102. The accordion cover 103 extends along the second direction Y, and one end is fixed to the conveying device 1, and the other end is fixed to the end of the shading plate 102 away from the flash steamed non-woven fabric. The accordion cover 103 can be extended and retracted synchronously with the moving distance of the shading plate 102 in the second direction Y.

[0066] Furthermore, in order to improve the shading effect of the shading plate 102, see Fig. 9 The shading plate 102 includes a first plate body 1021, a second plate body 1022 and a third plate body 1023. The first plate body 1021 extends in the vertical direction and is fixed to the stepping motor 101. The first plate body 1021 is fixed to one end of the accordion cover 103. The top of the first plate body 1021 is bent obliquely upward along the direction close to the flash-steamed non-woven fabric to form the second plate body 1022. The top of the second plate body 1022 is bent obliquely downward along the direction close to the flash-steamed non-woven fabric to form the third plate body 1023.

[0067] Furthermore, in this embodiment, in order to improve the thickness measurement accuracy of the flash-steamed non-woven fabric, the number of the first laser modules 6 and the second laser modules 7 is the same, and is at least 2. By measuring multiple groups of first distances h1 and second distances h2 using multiple groups of one-to-one corresponding first laser modules 6 and second laser modules 7, the thickness of the flash-steamed non-woven fabric is accurately detected.

[0068] The flash non-woven fabric uniformity detection equipment of the present invention can be connected to the flash non-woven fabric continuous production line. Therefore, the present invention provides a flash non-woven fabric production line, including any of the above-mentioned flash non-woven fabric uniformity detection equipment, and also including a discharging component, a winding component, and a dust cover, wherein the discharging component is used to discharge the flash non-woven fabric after it is formed, and the discharging end of the discharging component is connected to the feeding end of the conveying device 1. The discharging end of the conveying device 1 is provided with a dust cover to prevent external dust from falling on the flash non-woven fabric after the conveying device 1 discharges the material. The other end of the dust cover is provided with a winding component, thereby realizing fully automatic detection and production of flash non-woven fabrics.

[0069] The working process of the present invention is as follows: when performing uniformity detection on flash-steamed non-woven fabrics of different thicknesses, the flash-steamed non-woven fabrics are dedusted by the dust removal device 2, the first laser module 6 measures the first distance h1, the second laser module 7 measures the second distance h2, the thickness of the flash-steamed non-woven fabric h=H-h1-h2 is measured, the light transmittance of the flash-steamed non-woven fabric is measured, and the light transmittance of the flash-steamed non-woven fabric is compared with the standard dynamic range. If more than 90% of the light transmittance data measured in the detection area are within the standard dynamic range, it indicates that the uniformity is good. Otherwise, it indicates that the uniformity is poor and the production process parameters need to be adjusted. Similarly, when conducting uniformity detection of flash-steamed non-woven fabrics of different widths, the flash-steamed non-woven fabrics are dedusted by the dust removal device 2, and the width measuring module 9 measures the width W of the flash-steamed non-woven fabric. The width change of the diamond connecting rod 52 in the second direction Y corresponds to W. The detection range of the light intensity sensor 53 is adjusted to correspond to flash-steamed non-woven fabrics of different widths. The transmittance of the flash-steamed non-woven fabric is measured, and the real-time transmittance of the flash-steamed non-woven fabric is compared with the standard transmittance. If more than 90% of the transmittance data measured in the detection area are within the standard dynamic range, it indicates that the uniformity is good. Otherwise, it indicates that the uniformity is poor and the production process parameters need to be adjusted.

[0070] The flash steamed non-woven fabric uniformity detection equipment and production line provided by the present invention emits light through the light source component 4 to irradiate the upper surface of the flash steamed non-woven fabric, and receives the light intensity of the lower surface of the flash steamed non-woven fabric through the light intensity sensing component 5. At the same time, the first laser module 6 and the second laser module 7 and the light source component 4 cooperate to measure the transmittance of flash steamed non-woven fabrics of different thicknesses, and determine the standard dynamic range through the transmittance. If more than 90% of the measured transmittance data is within the standard dynamic range, it indicates that the flash steamed non-woven fabric has good uniformity. Otherwise, it indicates that the flash steamed non-woven fabric has poor uniformity, and the uniformity detection of flash steamed non-woven fabrics of different thicknesses is realized, the versatility is strong, and the detection efficiency is improved. In addition, a dust removal device 2 is provided, which can remove dust from the surface of the flash steamed non-woven fabric before the uniformity detection of the flash steamed non-woven fabric to improve the detection accuracy. At the same time, the flash-steamed non-woven fabric uniformity detection equipment of the present invention can be directly connected to the continuous production line of the flash-steamed non-woven fabric, and the uniformity of the flash-steamed non-woven fabric can be detected during the production process of the flash-steamed non-woven fabric. The production parameters of the flash-steamed non-woven fabric can be adjusted in real time according to the uniformity of the flash-steamed non-woven fabric, thereby avoiding the production of a large amount of waste and improving the yield rate.

[0071] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0072] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0073] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flash nonwoven fabric uniformity detection device, characterized in that: include: A conveying device, used for driving the flash-steamed nonwoven fabric to be conveyed in a first direction; A dust removal device, provided at the feed end of the conveying device, for removing dust from the surface of the flash-steamed nonwoven fabric; A detection box, used to provide a dark environment, is arranged at the discharge end of the conveying device and is arranged close to the dust removal device; A light source assembly, the light source assembly being arranged in the detection box and configured to emit light to illuminate the upper surface of the flash-steamed non-woven fabric; A light intensity sensing component is provided on the conveying device and directly below the light source component, and is used to receive the light intensity on the lower surface of the flash-evaporated non-woven fabric; The first laser module is disposed in the detection box and is located above the flash-steamed non-woven fabric. The first laser module emits laser light to measure a first distance h1 from the first laser module to the upper surface of the flash-steamed non-woven fabric. The second laser module is provided on the conveyor and is located below the flash-steamed non-woven fabric. The laser is emitted to measure a second distance h2 from the second laser module to the lower surface of the flash-steamed non-woven fabric. The fixed distance between the first laser module and the second laser module in the vertical direction is H. The first laser module measures the first distance h1, the second laser module measures the second distance h2, the thickness of the flash-steamed non-woven fabric h=H-h1-h2 is measured, and the light transmittance of flash-steamed non-woven fabrics of different thicknesses is measured.

2. The flash nonwoven fabric uniformity detection device according to claim 1, characterized in that: It also includes a width measuring module, which is arranged in the dust removal device, and the width measuring module is used to measure the width of the flash-steamed non-woven fabric. The width direction of the flash-steamed non-woven fabric is parallel to the second direction. The light intensity sensing component includes a driving unit, a diamond connecting rod, and a light intensity sensor. The output end of the driving unit is provided with the diamond connecting rod, and the light intensity sensors are evenly distributed on the diamond connecting rod. The driving unit drives the first hinge part and the second hinge part of the diamond connecting rod arranged along the second direction to move toward or away from each other, so that the detection range of the light intensity sensor corresponds to the width of the flash-steamed non-woven fabric.

3. The flash nonwoven fabric uniformity detection device according to claim 2, characterized in that: The driving unit comprises a driving motor, a lead screw and a bearing seat, wherein the driving motor is arranged on the conveying device, the output end of the driving motor is fixed to one end of the lead screw, the other end of the lead screw is rotatably connected to the bearing seat, the lead screw extends along the second direction and passes through the first hinge part and the second hinge part in sequence, the lead screw has a first thread segment and a second thread segment with opposite thread rotation directions, the first hinge part is provided with a first internal thread corresponding to the first thread segment, and the second hinge part is provided with a second internal thread corresponding to the second thread segment; The driving motor drives the lead screw to rotate, thereby driving the first hinged part and the second hinged part to move toward or away from each other.

4. The flash nonwoven fabric uniformity detection device according to claim 3, characterized in that: The diamond-shaped connecting rod includes a first connecting rod, a second connecting rod, a first connecting plate, a second connecting plate, and a guide shaft. The first connecting rod and the second connecting rod are arranged opposite to each other. The first connecting rod is provided with the first hinge part in the middle part, and the second connecting rod is provided with the second hinge part in the middle part. One end of the first connecting rod and the second connecting rod is hinged to the first connecting plate, and the other end of the first connecting rod and the second connecting rod is hinged to the second connecting plate. The guide shaft is arranged along the first direction, and the two ends pass through the first connecting plate, the second connecting plate and are fixed to the conveying device.

5. The flash nonwoven fabric uniformity detection device according to claim 1, characterized in that: An opening for passing the flash-steamed nonwoven fabric is provided at one end of the detection box away from the dust removal device, and the opening is provided with a light-blocking assembly, and the light-blocking assembly includes an electric cylinder and a light-blocking plate, the electric cylinder is fixedly arranged on the outer wall of the detection box, and the light-blocking plate is provided at the output end of the electric cylinder; Wherein, the electric cylinder drives the light blocking plate to block the opening.

6. The flash nonwoven fabric uniformity detection device according to claim 5, characterized in that: The light-blocking plate comprises a plate body, a light-blocking column, and an elastic member. The plate body is uniformly provided with countersunk holes. The light-blocking column passes through the countersunk holes and is provided with a limiting nut on the top. A limiting boss is provided in the middle of the light-blocking column. The elastic member is provided in the countersunk hole and sleeved on the light-blocking column. One end of the elastic member is abutted against the countersunk hole and the other end is abutted against the limiting boss. The elastic member has a tendency to push the light-blocking column to move downward. The electric cylinder drives the plate to cover the opening, the light-blocking column located directly above the flash-steamed non-woven fabric compresses the elastic member, and the lower end of the light-blocking column contacts the upper surface of the flash-steamed non-woven fabric.

7. The flash nonwoven fabric uniformity detection device according to claim 1, characterized in that: The conveying device is provided with two groups of shading components near the detection box, and the shading components are used to block the gap between the flash-steamed non-woven fabric and the conveying device. The two groups of shading components are arranged relatively to each other in the second direction, and the shading components include a stepping motor, a shading plate, and an accordion cover. The shading plate is provided at the output end of the stepping motor, and the accordion cover extends along the second direction, and one end is fixed to the conveying device, and the other end is fixed to the end of the shading plate away from the flash-steamed non-woven fabric.

8. The flash nonwoven fabric uniformity detection device according to claim 7, characterized in that: The shading plate includes a first plate body, a second plate body and a third plate body. The first plate body extends in a vertical direction and is fixed to the stepping motor. The first plate body is fixed to one end of the accordion cover. The top of the first plate body is bent obliquely upward along the direction close to the flash-steamed non-woven fabric to form the second plate body. The top of the second plate body is bent obliquely downward along the direction close to the flash-steamed non-woven fabric to form the third plate body.

9. The flash nonwoven fabric uniformity detection device according to claim 1, characterized in that: The number of the first laser modules and the number of the second laser modules are the same, and are at least two.

10. A flash nonwoven fabric production line, comprising the flash nonwoven fabric uniformity detection device according to any one of claims 1 to 9, characterized in that: It also includes a discharging component, a winding component, and a dust cover. The discharging component is used to discharge the flash non-woven fabric after it is formed. The discharging end of the discharging component is connected to the feeding end of the conveying device. The discharging end of the conveying device is provided with the dust cover, and the other end of the dust cover is provided with the winding component.

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