A preparation device for fine-denier elastic non-woven fabric

Abstract

The present invention discloses a device for preparing fine-denier stretch non-woven fabrics, comprising a material transition wheel, a first elastic rubber gluing oscillating device, and a pressing roller. The first elastic rubber gluing oscillating device is located above the material transition wheel and is used to guide the elastic rubber into an S shape. The pressing roller is located below the material transition wheel. The upper non-woven fabric is conveyed to the material transition wheel, and the lower non-woven fabric is conveyed to the material transition wheel. The first elastic rubber is guided into an S shape by the first elastic rubber gluing oscillating device and then glue is applied. The first elastic rubber guided into an S shape after being glued is then bonded to the upper non-woven fabric. The three are then pressed together, so that the first elastic rubber is sequentially arranged between the two layers of non-woven fabrics, thereby forming an S-shaped fine-denier stretch non-woven fabric in an automated process, eliminating the need for manual labor and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the field of non-woven fabric preparation, and in particular to a device for preparing fine-denier elastic non-woven fabric. Background Art

[0002] Absorbent sanitary materials, including feminine hygiene products such as sanitary napkins and sanitary pads, as well as baby hygiene products such as baby diapers, and adult care products such as adult diapers, all require the use of elastic non-woven fabrics for fitting and padding around the wearer's waist, legs, crotch and sides to generally provide maximum extensibility, the most comfortable wearing conditions, improved leakage protection and better fit.

[0003] As described in patent CN 110035728 A warp-axis elastic laminate properties, the base structure includes a top sheet, a back sheet and an absorbent core arranged between the top sheet and the back sheet; a first elastomer laminate, the first elastomer laminate including a first substrate layer and a second substrate layer and a first plurality of elastic components arranged between the first substrate layer and the second substrate layer; wherein the first plurality of elastic components include a) about 10 to about 1000 elastic strands, b) an average strand spacing of about 0.25 mm to about 4 mm, c) an average fineness of about 10 to about 500, and d) an average prestrain of about 50% to about 400%; wherein the first substrate layer and the second substrate layer each have a basis weight of about 6 g / m2 to about 30 g / m2; and wherein the first plurality of elastic components have a contact area percentage of at least one of the following: a) greater than about 11% at 100 μm, b) greater than about 28% at 200 μm, and c) greater than about 51% at 300 μm; and wherein the first plurality of elastic components have a contact area percentage of <1 2%-98% height value of .6mm.

[0004] The elastic component disclosed herein is provided with elastic bands only in the longitudinal direction (MD) of the non-woven fabric, so that the non-woven fabric has elasticity in the longitudinal direction, but only in the longitudinal direction. It has no elasticity in the cross-machine direction (CD), resulting in insufficient fit to the human body and weak wrapping. At the same time, there is no mention of how to produce it, nor any related equipment. Therefore, it is necessary to propose a preparation device for fine-denier stretch non-woven fabric. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and provide a device for preparing fine-denier elastic nonwoven fabrics.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A device for preparing fine-denier stretch non-woven fabric includes a material transition wheel, a first elastic rubber gluing oscillating device, and a pressing roller. The first elastic rubber gluing oscillating device is located above the material transition wheel and is used to guide the elastic rubber into an S shape. The pressing roller is located below the material transition wheel.

[0008] The present invention transports the upper non-woven fabric to the material transition wheel, and the lower non-woven fabric to the material transition wheel. The first elastic rubber band is guided into an S shape by the first elastic rubber band gluing swing device for glue coating. The first elastic rubber band guided into an S shape after glue coating is bonded to the upper non-woven fabric. Thereafter, the three are pressed together so that the first elastic rubber band is arranged in sequence between the two layers of non-woven fabric, thereby forming an automated process of S-shaped fine-denier stretch non-woven fabric, which does not require manual labor and improves production efficiency.

[0009] Preferably, a second elastic rubber band gluing oscillating device is provided on the left side of the first elastic rubber band gluing oscillating device for guiding the second elastic rubber band into an S-shape that is a mirror image of the elastic rubber band formed by the first elastic rubber band gluing oscillating device.

[0010] The present invention uses a second elastic rubber band gluing and swinging device to guide the second elastic rubber band into an S-shape that is a mirror image of the first elastic rubber band and adhere it to the lower non-woven fabric. Then, the upper non-woven fabric adhered with the first elastic rubber band and the lower non-woven fabric adhered with the second elastic rubber band are pressed together by a pressing roller, so that the first elastic rubber band and the second elastic rubber band are arranged in sequence between the two layers of non-woven fabrics in a mesh shape, forming a mesh-shaped fine-denier elastic non-woven fabric. Compared with the S-shaped fine-denier elastic non-woven fabric, the mesh-shaped fine-denier elastic non-woven fabric has stronger elasticity and better wrapping properties.

[0011] Preferably, the lamination roller includes two rotating rollers arranged in parallel on the left and right sides. The two rotating rollers 451 are rotated and controlled by a motor. This is the existing technology and will not be described in detail in this case. It can press the upper non-woven fabric and the lower non-woven fabric.

[0012] The first elastic rubber band gluing and swinging device includes a slide rail, a guide column, a fixed frame, and a glue discharge plate. The fixed frame is arranged on the slide rail, and the length direction of the fixed frame is consistent with the sliding direction of the slide rail. The glue discharge plate is arranged on the upper surface of the fixed frame. Several guide columns are arranged on the upper surface of the glue discharge plate along the length direction of the glue discharge plate. A gap is provided between two guide columns to facilitate the passage of the rubber band. Several glue discharge holes are opened on the glue discharge plate, and each glue discharge hole corresponds to a gap. The glue discharge plate is formed with a V-shaped limiting groove at the position corresponding to the glue discharge hole.

[0013] The second elastic rubber band gluing oscillating device is arranged in a mirror image with the first elastic rubber band gluing oscillating device, and has the same structure as the first elastic rubber band gluing oscillating device.

[0014] The present invention guides the first elastic rubber band through the gaps between the guide columns, and one rubber band can pass through each gap. The first elastic rubber band is then limited in the V-shaped limiting groove by a V-shaped limiting groove, which facilitates glue spraying on the first elastic rubber band in the later stage. The fixed frame then moves on the slide rail, driving the glue discharge plate to swing, and the swinging direction of the glue discharge plate is perpendicular to the direction of the non-woven fabric. The glue discharge holes on the glue discharge plate then discharge glue, so that the first elastic rubber band is coated with glue. When the first elastic rubber band passes through the upper surface of the upper non-woven fabric, it can adhere to the non-woven fabric and produce a row of S-shaped first elastic rubber bands.

[0015] Preferably, the glue discharge plate is composed of several glue discharge blocks, each of which is provided with the glue discharge hole, the guide column is provided on the glue discharge block, and a first scissors-fork structure is provided at the bottom of the glue discharge plate, and the fork-type connecting rods of the first scissors-fork structure are hinged in series at the head and tail, and a plurality of through holes are provided on the first scissors-fork structure to facilitate the glue discharge hose of the glue gun to pass through, and the glue discharge block is provided at each intersection, the head end of the first scissors-fork structure is fixedly connected to the first connecting plate, the tail end of the first scissors-fork structure is fixedly connected to the second connecting plate, the first connecting plate is fixedly connected to the fixed frame, and a spacing adjustment electric push rod is fixed in the fixed frame, and the push rod end of the spacing adjustment electric push rod is fixedly connected to the second connecting plate.

[0016] The present invention adjusts the extension and contraction of the electric push rod through the spacing adjustment, thereby driving the extension and contraction of the first scissor structure, thereby changing the spacing between the glue discharge blocks, and thus changing the spacing between the guide columns, so that the glue discharge plate can be suitable for elastic rubber bands of different thicknesses, and can also adapt to the production of elastic components with different spacings, making the device more applicable.

[0017] Preferably, a glue gun corresponds to the bottom of each glue outlet hole, and the nozzle of the glue outlet of the glue gun fits with the glue outlet hole, which can prevent the glue gun from spraying glue everywhere during the glue spraying process. A second scissors-fork structure is provided at the bottom of the glue gun, and the glue gun is provided at each intersection of the second scissors-fork structure. One end of the second scissors-fork structure is connected to the first connecting plate, and the other end is connected to the second connecting plate. The glue gun is a prior art and will not be described in detail in this case.

[0018] The second scissor structure of the present invention is extended and retracted by the electric push rod through the spacing adjustment, thereby driving the glue gun to extend and retract, so that the glue gun can always correspond to the glue outlet hole, and glue can be discharged after the spacing is adjusted.

[0019] Preferably, in order to prevent the glue gun from spraying glue everywhere during the glue spraying process, the nozzle of the glue discharge pipe of the glue gun is always in contact with the glue discharge hole. The glue discharge pipe of the glue gun is a telescopic glue discharge pipe, and the telescopic glue discharge pipe includes an outer tube, an inner tube, a rotating gear, a passive gear, a rack, a sealed telescopic pipe, a rotating motor, and a rotating bearing. The inner tube is arranged in the outer tube, and the racks are provided on the opposite side walls of the inner tube, one rack is meshed with the rotating gear, and the other rack is meshed with the passive gear. The rotating gear is rotated by the rotating motor, and the rotating motor is fixed on the side wall of the outer tube, the passive gear is fixedly connected to the inner ring of the rotating bearing, and the outer ring of the rotating bearing is fixedly connected to the outer tube. The sealed telescopic pipe is a hose with a wavy cross-section, one end of the hose is fixedly connected to the inner wall of the outer tube, and the other end is fixedly connected to the outer side wall of the inner tube, and the inner tube is opposite to the glue discharge hole.

[0020] The present invention arranges the glue outlet pipe into a telescopic structure. When the first scissors-fork structure is extended or retracted, the glue outlet pipe can be shortened first to prevent the glue outlet pipe from hindering the extension and retraction of the first scissors-fork structure. Afterwards, when the first scissors-fork structure is completely extended or retracted, the glue outlet pipe can be extended to the bottom of the glue outlet hole, so that the glue outlet pipe always keeps in contact with the glue outlet hole during glue discharging, preventing glue from spraying everywhere and affecting the extension and retraction of the scissors-fork structure.

[0021] The present invention drives the rotation of the rotating gear by the rotation of the rotating motor, thereby driving the rack to move forward and backward, thereby realizing the extension and retraction of the inner tube on the outer tube, thereby achieving the extension and retraction effect.

[0022] The present invention seals the telescopic tube so that the inner tube and the outer tube always maintain a sealed state, thereby preventing glue from passing through the gap between the inner tube and the outer tube and affecting the rotating motor.

[0023] Preferably, the sides of the first elastic rubber band gluing oscillating device and the second elastic rubber band gluing oscillating device are further provided with elastic rubber band guide rollers, and the elastic rubber band guide rollers include a bracket, a fixed shaft, and a positioning piece. The two ends of the fixed shaft are rotatably set on the bracket, and the rotation setting can be in the form of a bearing. The outer ring of the bearing is fixedly connected to the bracket, and the inner ring of the bearing is fixedly connected to the fixed shaft. Several positioning pieces are fixed on the fixed shaft along the length direction of the fixed shaft. A rubber band conveying area is left between two adjacent positioning pieces, and each rubber band conveying area is opposite to a gap.

[0024] The present invention conveys the rubber through the rubber conveying area, and then the rubber adheres to and surrounds the guide column and passes through the gap between the guide columns, so that after the rubber block is separated by the first scissor-fork structure, the rubber can always pass through the V-shaped limit groove, thereby preventing the rubber from passing between the rubber blocks after the rubber block is separated by the first scissor-fork structure, and not passing through the V-shaped limit groove, thereby affecting the subsequent glue spraying.

[0025] Preferably, the outer wall of the fixed shaft is provided with external threads at intervals, and the positioning piece is provided with internal threads that cooperate with the external threads. The present invention makes the positioning piece easy to install and easy to disassemble later through the cooperation of the external threads and the internal threads.

[0026] The fine-denier elastic non-woven fabric produced in this case includes an upper non-woven fabric, a lower non-woven fabric and a plurality of elastic components sandwiched between the upper and lower non-woven fabrics, wherein the elastic components include a plurality of S-shaped first elastic rubber bands and second elastic rubber bands, and the first elastic rubber bands and the second elastic rubber bands are arranged in sequence.

[0027] The present invention uses an S-shaped first elastic band that has elastic effects in both the longitudinal and transverse directions, making it suitable for use in every product application field, especially in the field of baby diapers, where this patented technology can be used in the waist, legs, crotch, etc. At the same time, the upper and lower non-woven fabrics each have a material weight of less than 6 grams per square meter, compared to the 10 grams per square meter used on the market, making the material lighter, softer and more breathable.

[0028] The first elastic rubber band and the second elastic rubber band are arranged in a mirror image, and the first elastic rubber band and the second elastic rubber band are arranged in a mesh shape. The present invention designs the elastic component into a mesh structure, so that the fine denier stretch non-woven fabric is elastic in both the transverse and longitudinal directions, fits the human body better, and has stronger wrapping properties.

[0029] The multiple elastic components include about 10 to about 1000 elastic strands, a spacing A between two first elastic rubber strands of 0 mm to 20 mm, an average fineness of about 10 to about 500, and an average pre-strain of about 50% to about 400%, with good elasticity and a non-touch feeling with large-area elasticity.

[0030] In summary, the beneficial effects of the present invention are:

[0031] 1. The present invention conveys the upper non-woven fabric to the material transition wheel, and the lower non-woven fabric to the material transition wheel. The first elastic band is guided into an S-shape by the first elastic band gluing swing device for gluing. The first elastic band guided into an S-shape after gluing is adhered to the upper non-woven fabric. The three are then pressed together, so that the first elastic band is sequentially arranged between the two non-woven fabric layers, thereby forming an S-shaped fine-denier stretch non-woven fabric in an automated process. This process eliminates the need for manual labor and improves production efficiency.

[0032] 2. The present invention guides the first elastic band through the gaps between the guide posts. Each gap can accommodate one elastic band. The first elastic band is then restrained in the V-shaped limiting grooves, facilitating the subsequent spraying of glue on the first elastic band. The fixing frame then moves on the slide rails, driving the glue plate to swing. The swinging direction of the glue plate is perpendicular to the direction of the non-woven fabric. Glue is then discharged from the glue holes on the glue plate, coating the first elastic band with glue. When the first elastic band passes through the upper surface of the upper non-woven fabric, it adheres to the non-woven fabric, forming an array of S-shaped first elastic bands.

[0033] 3. The present invention adjusts the distance between the electric push rods to extend and retract, thereby driving the extension and retraction of the first scissor structure, thereby changing the distance between the glue dispensing blocks, and thus changing the distance between the guide posts. This allows the glue dispensing plate to be suitable for elastic bands of different thicknesses, and also adapts to the production of elastic components with different spacings, making the device more applicable.

[0034] 4. The invention sets the glue outlet hose into a telescopic structure. When the first scissors-fork structure is extended or retracted, the glue outlet hose can be shortened first to prevent the glue outlet hose from hindering the extension or retraction of the first scissors-fork structure. Then, when the first scissors-fork structure is fully extended or retracted, the glue outlet hose can be extended to the bottom of the glue outlet hole. Therefore, the glue outlet hose and the glue outlet hole are always kept in close contact during glue discharge, preventing glue from spraying everywhere and affecting the extension or retraction of the scissors-fork structure.

[0035] 5. The outer wall of the fixed shaft of the invention is provided with external threads at intervals, and the positioning piece is provided with internal threads that cooperate with the external threads. The present invention makes it easy to install the positioning piece and also easy to disassemble later through the cooperation of the external threads and the internal threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of Example 1 of the present invention, in which the elastic components are arranged in a double S-shaped cross pattern and the spacing between two adjacent elastic bands is 8 mm;

[0037] Figure 2 1 is a schematic cross-sectional view of a fine-denier stretch nonwoven fabric according to Example 1 of the present invention;

[0038] Figure 3 Schematic diagram of Example 2 of the present invention, in which the elastic components are symmetrically arranged in a double S shape and the spacing between two adjacent elastic bands is 2 mm;

[0039] Figure 4 2 is a schematic cross-sectional view of two fine-denier stretch nonwoven fabrics according to an embodiment of the present invention;

[0040] Figure 5 is a schematic diagram of a longitudinal distribution of elastic components in Example 3 of the present invention;

[0041] Figure 6 Schematic cross-sectional views of three types of fine-denier stretch nonwoven fabrics according to embodiments of the present invention;

[0042] Figure 7 Schematic diagram of an elastic band applying device for producing fine-denier stretch nonwoven fabric in Example 1 of the present invention;

[0043] Figure 8 Schematic diagram of the change of the elastic band using the elastic band applying device in Production Example 1 of the present invention;

[0044] Figure 9 Schematic diagram of an elastic band applying device for producing fine-denier stretch nonwoven fabric in Example 2 of the present invention;

[0045] Figure 10 Schematic diagram of the change of the elastic band using the elastic band applying device in Production Example 2 of the present invention;

[0046] Figure 11 Schematic diagram of the change of the elastic band using the elastic band applying device in Production Example 3 of the present invention;

[0047] Figure 12 Schematic diagram of the dispensing plate of Example 1 of the present invention;

[0048] Figure 13 Schematic diagram of the glue discharging block and elastic rubber guide roller of Example 4 of the present invention;

[0049] Figure 14 Schematic diagram of a glue dispensing block and a glue dispensing gun according to Example 4 of the present invention;

[0050] Figure 15 Schematic diagram of a pitch-adjusting electric push rod according to a fourth embodiment of the present invention;

[0051] Figure 16 is a schematic diagram of a first elastic band passing through an elastic band guide roller and a guide post according to a fourth embodiment of the present invention;

[0052] Figure 17 This is a schematic diagram of the glue discharging block of Example 4 of the present invention after being combined by the first scissor-fork structure;

[0053] Figure 18 1 is a partial cross-sectional schematic diagram of a glue discharge pipe of a glue discharge gun according to embodiment 4 of the present invention;

[0054] Figure 19 2 is a front cross-sectional schematic diagram of a glue discharge pipe of a glue discharge gun according to embodiment 4 of the present invention;

[0055] Figure 20 It is a schematic diagram of the fixed shaft of the present invention provided with external threads. DETAILED DESCRIPTION

[0056] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0057] The present invention will be described in detail below with reference to the accompanying drawings using embodiments.

[0058] Example 1

[0059] like Figure 1-2 As shown, a fine denier stretch nonwoven fabric comprises an upper nonwoven fabric 1, a lower nonwoven fabric 2, and a plurality of elastic components 3 sandwiched therebetween, wherein the elastic components 3 comprise a plurality of S-shaped first elastic bands 31 and second elastic bands 32, the first elastic bands 31 and second elastic bands 32 being arranged in sequence, the first elastic bands 31 and second elastic bands 32 being mirror images, the first elastic bands 31 and second elastic bands 32 being arranged in a mesh shape, the spacing A between the two first elastic bands 31 being between 8 mm, the arc R of the S-shape being 34, the arc size of R depending on the swing amplitude of the dispensing plate on the elastic band applying device, the S-shaped first elastic bands 31 and second elastic bands 32 both comprising a convex portion and a concave portion, the spacing B between the convex portion of the first elastic band 31 and the convex portion of the second elastic band 32 being 32, the upper nonwoven fabric and the lower nonwoven fabric each having a basis weight of less than 6 g / m2, the plurality of elastic components comprising about 10 to about 1000 elastic strands, an average denier of about 10 to about 500, and an average prestrain of about 50% to about 400%.

[0060] like Figure 7-8As shown in Figure 12, a preparation device for a fine-denier stretch non-woven fabric includes a material transition wheel 41, a first elastic rubber gluing swing device 43, and a pressing roller 45. The first elastic rubber gluing swing device 43 is located above the material transition wheel 41 and is used to guide the elastic rubber into an S shape. The pressing roller 45 is located below the material transition wheel 41. A second elastic rubber gluing swing device 44 is provided on the left side of the first elastic rubber gluing swing device 43 to guide the elastic rubber into an S shape that is a mirror image of the elastic rubber formed by the first elastic rubber gluing swing device 43. The pressing roller 45 includes two rotating rollers 451 arranged in parallel on the left and right. The first elastic rubber gluing swing device 43 includes a sliding Rail 431, guide column 432, fixed frame 433, glue plate 434, the fixed frame 433 is arranged on the slide rail 431, the length direction of the fixed frame 433 is consistent with the sliding direction of the slide rail 431, the glue plate 434 is arranged on the upper surface of the fixed frame 433, several guide columns 432 are arranged on the upper surface of the glue plate 434 along the length direction of the glue plate 434, a gap 435 is provided between two guide columns 432 for easy passage of rubber band, several glue holes 436 are opened on the glue plate 434, each glue hole 436 corresponds to a gap 435, and a V-shaped limiting groove 430 is formed on the glue plate 434 corresponding to the position of the glue hole 436.

[0061] Working principle:

[0062] like Figure 1-12As shown, when in use, the upper non-woven fabric 1 is conveyed to the laminating roller through the non-woven fabric conveying step, and the lower non-woven fabric 2 is conveyed to the laminating roller. Then, the first elastic rubber band 31 passes through the gap 435 between the guide columns 432 for guidance. Each gap 435 can pass through an elastic band. Then, the first elastic rubber band 31 is limited in the V-shaped limit groove 430 through the V-shaped limit groove 430. Then, the fixed frame 433 moves on the slide rail, driving the glue plate 434 to swing. The swinging direction of the glue plate 434 is perpendicular to the direction of the non-woven fabric. Then, the glue outlet hole 436 on the glue plate 434 discharges glue, so that the first elastic rubber band is coated with glue. When the first elastic rubber band passes through the upper surface of the upper non-woven fabric, it can adhere to the upper non-woven fabric and produce a row of S-shaped arrays. The first elastic rubber band, the second elastic rubber band 32 is passed through the second elastic rubber band gluing swing device 44 in the same manner as the first elastic rubber band 31, so that the second elastic rubber band 32 is adhered to the lower non-woven fabric and produces a row of S-shaped second elastic rubber bands. Then, through the pressing step, the upper non-woven fabric adhered with the first elastic rubber band 31 and the lower non-woven fabric 2 adhered with the second elastic rubber band 32 are pressed by the pressing roller 45, so that the first elastic rubber band and the second elastic rubber band are arranged in sequence between the two layers of non-woven fabrics in a mesh shape to form an elastic component, forming a mesh-like fine-denier stretch non-woven fabric. The finished fine-denier stretch non-woven fabric has elasticity in both the transverse and longitudinal directions due to the elastic component being designed as a mesh structure, and is more fit to the human body and has a stronger wrapping property.

[0063] Example 2

[0064] like Figure 3-4 As shown, a fine-denier stretch nonwoven fabric includes an upper nonwoven fabric 1, a lower nonwoven fabric 2, and an elastic component 3 sandwiched between the upper and lower nonwoven fabrics. The elastic component 3 includes a plurality of S-shaped first elastic rubber bands 31 arranged in sequence. The spacing A between two first elastic rubber bands 31 is between 2 mm, the curvature R of the S-shape is 32, and the spacing C between the protrusions of the two first elastic rubber bands 31 is 64 mm.

[0065] like Figure 9-10 As shown, a device for preparing a fine-denier stretch nonwoven fabric comprises the following steps:

[0066] S1, non-woven fabric conveying, the upper non-woven fabric 1 is conveyed to the laminating roller through the material transition wheel, and the lower non-woven fabric 2 is conveyed to the laminating roller through the material transition wheel;

[0067] S2, S-shaped guide, the first elastic rubber band 31 is guided into an S shape by the first elastic rubber band gluing and swinging device;

[0068] S3, bonding, the first elastic band 31 guided into an S shape is then sprayed with glue through the glue outlet of the first elastic band gluing and swinging device, and then adhered to the upper surface of the upper non-woven fabric 1;

[0069] S4, pressing, the upper non-woven fabric with the first elastic rubber band 31 and the lower non-woven fabric 2 are pressed together by a pressing roller, so that the first elastic rubber band is arranged in sequence between the two non-woven fabrics to form an S-denier fine stretch non-woven fabric.

[0070] Example 3

[0071] like Figure 5-6 He Ru Figure 11 As shown, the difference from Example 2 is that, in the preparation device of fine denier stretch non-woven fabric, when in use, the upper non-woven fabric 1 is conveyed to the lamination roller through the material transition wheel, and the lower non-woven fabric 2 is conveyed to the lamination roller through the material transition. The first elastic rubber band gluing swing device does not swing, and the first elastic rubber band 31 passes directly between the guide columns. Then, glue is sprayed on the glue outlet and then adhered to the upper surface of the upper non-woven fabric 1 to form a longitudinal distribution with an average strand spacing of about 1 mm to about 4 mm. The device in this case can not only be made into an S shape, but also into a longitudinal shape, with better universal performance.

[0072] Example 4

[0073] like Figure 13-20As shown, different from Example 1, the glue discharge plate 434 is composed of several glue discharge blocks 437, each of which is provided with the glue discharge hole 436, and the guide column 432 is provided on the glue discharge block 437. The bottom of the glue discharge plate 434 is provided with a first scissor structure 47, and the first scissor structure 47 is composed of fork-type connecting rods connected in series at the end, and the glue discharge block 437 is provided at each intersection. The head end of the first scissor structure 47 is fixedly connected to the first connecting plate 471, and the tail end of the first scissor structure 47 is fixedly connected to the second connecting plate 472. The first connecting plate 471 is fixedly connected to the fixed frame 433, and the fixed frame 433 is fixed with a spacing adjustment electric push rod. 473, the push rod end of the spacing adjustment electric push rod 473 is fixedly connected to the second connecting plate 472, and the bottom of each glue hole 436 corresponds to a glue gun 48, and the bottom of the glue gun 48 is provided with a second scissor structure 480, and each intersection of the second scissor structure 480 is provided with the glue gun 48, one end of the second scissor structure 480 is connected to the first connecting plate 471, and the other end is connected to the second connecting plate 472, and the glue pipe 481 of the glue gun 48 is a telescopic glue pipe, which includes an outer tube 482, an inner tube 483, a rotating gear 484, a passive gear 485, a rack 486, a sealed telescopic tube 487, a rotating motor 488, and a rotating shaft Bearing 489, the inner tube 483 is arranged in the outer tube 482, and the racks 486 are provided on the opposite side walls of the inner tube 483, wherein one rack 486 is engaged with the rotating gear 484, and the other rack is engaged with the passive gear 485, and the rotating gear 484 is rotated by the rotating motor 488, and the rotating motor 488 is fixed on the side wall of the outer tube 482, and the passive gear 485 is fixedly connected to the inner ring of the rotating bearing 489, and the outer ring of the rotating bearing 489 is fixedly connected to the outer tube 482. The sealed telescopic tube 487 is a hose with a wavy cross-section, one end of the hose is fixedly connected to the inner wall of the outer tube 482, and the other end is fixedly connected to the outer side wall of the inner tube 483. The inner tube 483 is opposite to the glue outlet hole 436. The sides of the first elastic rubber band gluing swing device 43 and the second elastic rubber band gluing swing device 44 are also provided with elastic rubber band guide rollers 49. The elastic rubber band guide rollers 49 include a bracket 491, a fixed shaft 492, and a positioning piece 493. The two ends of the fixed shaft 492 are rotatably arranged on the bracket 491. Several positioning pieces 493 are fixed on the fixed shaft 492 along the length direction of the fixed shaft 492. A rubber band conveying area 494 is left between two adjacent positioning pieces 493. The outer wall of the fixed shaft 492 is provided with an external thread 495 at a certain distance, and the positioning piece 493 is provided with an internal thread that cooperates with the external thread 495.

[0074] Working principle: Figure 13-20As shown, when in use, the telescopic tube of the glue gun drives the rotation gear 484 and the passive gear to rotate through the rotation of the rotary motor 488, thereby driving the inner tube 483 to shorten, preventing the glue tube from affecting the extension and contraction of the first scissor-fork structure, and then driving the extension and contraction of the first scissor-fork structure 47 through the extension and contraction of the spacing adjustment electric push rod 473, thereby changing the spacing between the glue blocks 437, thereby changing the spacing between the guide columns 432, adjusting the appropriate spacing, and at the same time, the second scissor-fork structure 480 drives the glue gun to move, ensuring that each glue gun remains corresponding to the glue hole. After adjusting to the appropriate position, the rotary motor 488 is rotated in the opposite direction. The rubber band 31 is then moved along the guide post 432 and passed through the gap 435 between the guide posts, so that the rubber block 437 can pass through the V-shaped limit groove 430 after being separated by the first scissor structure 47. The first elastic rubber band 31 is then limited in the V-shaped limit groove 430 by the V-shaped limit groove 430, and the fixed frame 433 is then moved on the slide rail. The first elastic band 32 is moved in a row, driving the glue plate 434 to swing, and the swing direction of the glue plate 434 is perpendicular to the direction of the non-woven fabric. Then, the glue holes 436 on the glue plate 434 discharge glue, so that the first elastic rubber band is coated with glue. When the first elastic rubber band passes through the upper surface of the upper non-woven fabric, it can be adhered to the upper non-woven fabric and produce a row of S-shaped first elastic rubber bands. The second elastic rubber band 32 is passed through the second elastic rubber band gluing swing device 44 in the same way as the first elastic rubber band 31, so that the second elastic rubber band 32 is adhered to the lower non-woven fabric and produces a row of S-shaped second elastic rubber bands. Then, through the pressing step, the adhesive rubber band is The upper non-woven fabric of the first elastic rubber band 31 and the lower non-woven fabric 2 with the second elastic rubber band 32 adhered thereto are pressed together by a pressing roller 45, so that the first elastic rubber band and the second elastic rubber band are arranged in sequence between the two layers of non-woven fabrics in a mesh shape to form an elastic component, forming a mesh of fine-denier elastic non-woven fabric, so that the finished fine-denier elastic non-woven fabric is more fitted. During the entire process, by adjusting the spacing, the gap between the guide columns of the elastic rubber band applying device 4 is adjusted to a suitable position, so that the glue plate can be suitable for elastic rubber bands of different thicknesses, and can also adapt to the production of elastic components with different spacings, making the device more applicable.

Claims

1. A device for preparing fine denier stretch nonwoven fabric, characterized in that: It comprises a material transition wheel (41), a first elastic rubber gluing swing device (43), and a pressing roller (45), wherein the first elastic rubber gluing swing device (43) is located above the material transition wheel (41) and is used to guide the elastic rubber into an S shape, and the pressing roller (45) is located below the material transition wheel (41); The first elastic rubber band gluing swing device (43) includes a slide rail (431), a guide column (432), a fixed frame (433), and a glue discharge plate (434). The fixed frame (433) is arranged on the slide rail (431), and the length direction of the fixed frame (433) is consistent with the sliding direction of the slide rail (431). The glue discharge plate (434) is arranged on the upper surface of the fixed frame (433). A plurality of the guide columns (432) are arranged on the upper surface of the glue discharge plate (434) along the length direction of the glue discharge plate (434). A gap (435) is provided between two of the guide columns (432) to facilitate the passage of the rubber band. A plurality of glue discharge holes (436) are opened on the glue discharge plate (434), and each glue discharge hole (436) corresponds to a gap (435). The glue discharge plate (434) is formed with a V-shaped limiting groove (430) at a position corresponding to the glue discharge hole (436).

2. The device for preparing a fine-denier stretch nonwoven fabric according to claim 1, characterized in that: A second elastic rubber band gluing and oscillating device (44) is provided on the left side of the first elastic rubber band gluing and oscillating device (43) for guiding the elastic rubber band into an S-shape that is a mirror image of the elastic rubber band formed by the first elastic rubber band gluing and oscillating device (43).

3. The device for preparing a fine-denier elastic nonwoven fabric according to claim 1, characterized in that: The laminating roller (45) includes two rotating rollers (451) arranged parallel to each other.

4. The device for preparing a fine-denier stretch nonwoven fabric according to claim 1, characterized in that: The glue discharge plate (434) is composed of a plurality of glue discharge blocks (437), each of which is provided with the glue discharge hole (436). The guide column (432) is provided on the glue discharge block (437). A first scissor-type structure (47) is provided at the bottom of the glue discharge plate (434). The first scissor-type structure (47) is composed of fork-type connecting rods that are hinged in series at the head and tail. The glue discharge block (437) is provided at each intersection. The head end of the first scissor-type structure (47) is fixedly connected to a first connecting plate (471), and the tail end of the first scissor-type structure (47) is fixedly connected to a second connecting plate (472). The first connecting plate (471) is fixedly connected to a fixed frame (433). A spacing adjustment electric push rod (473) is fixed in the fixed frame (433), and the push rod end of the spacing adjustment electric push rod (473) is fixedly connected to the second connecting plate (472).

5. The device for preparing fine-denier stretch nonwoven fabric according to claim 4, characterized in that: The bottom of each glue outlet hole (436) corresponds to a glue outlet gun (48), and the bottom of the glue outlet gun (48) is provided with a second scissor-fork structure (480). Each intersection of the second scissor-fork structure (480) is provided with the glue outlet gun (48), and one end of the second scissor-fork structure (480) is connected to the first connecting plate (471), and the other end thereof is connected to the second connecting plate (472).

6. The device for preparing fine-denier elastic nonwoven fabric according to claim 5, characterized in that: The glue discharge pipe (481) of the glue discharge gun (48) is a telescopic glue discharge pipe, which includes an outer pipe (482), an inner pipe (483), a rotating gear (484), a driven gear (485), a rack (486), a sealed telescopic pipe (487), a rotating motor (488), and a rotating bearing (489). The inner pipe (483) is arranged in the outer pipe (482), and the racks (486) are provided on the opposite side walls of the inner pipe (483). One rack (486) is engaged with the rotating gear (484), and the other rack is engaged with the driven gear (485). The rotating gear (484) is rotated by the rotating motor (488). The rotating motor (488) is fixed on the side wall of the outer pipe (482). The driven gear (485) is fixedly connected to the inner ring of the rotating bearing (489), and the outer ring of the rotating bearing (489) is fixedly connected to the outer pipe (482).

7. The device for preparing fine-denier elastic nonwoven fabric according to claim 6, characterized in that: The sealed telescopic tube (487) is a flexible tube with a wavy cross-section, one end of which is fixedly connected to the inner wall of the outer tube (482), and the other end of which is fixedly connected to the outer wall of the inner tube (483), and the inner tube (483) is opposite to the glue outlet hole (436).

8. The device for preparing fine-denier stretch nonwoven fabric according to claim 1, characterized in that: Elastic rubber band guide rollers (49) are further provided on the sides of the first elastic rubber band gluing oscillating device (43) and the second elastic rubber band gluing oscillating device (44). The elastic rubber band guide rollers (49) include a bracket (491), a fixed shaft (492), and a positioning piece (493). Both ends of the fixed shaft (492) are rotatably mounted on the bracket (491). A plurality of positioning pieces (493) are fixed on the fixed shaft (492) along the length direction of the fixed shaft (492), and a rubber band conveying area (494) is left between two adjacent positioning pieces (493).

9. The device for preparing fine-denier stretch nonwoven fabric according to claim 8, characterized in that: The outer wall of the fixed shaft (492) is provided with external threads (495) at intervals, and the positioning piece (493) is provided with internal threads that cooperate with the external threads (495).

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