An automated inserting device and method for a split adult diaper

Abstract

The present invention discloses an automatic inserting device and method for a split adult diaper, which relates to the field of diapers. The inserting device includes: a workbench, a material taking table arranged on both sides of the workbench, and a conveying guide rail installed on the workbench; a material conveying table is slidably connected to the top of the conveying guide rail, and a clamping mechanism is installed on the top of the material conveying table; a cloth supporting and hot pressing mechanism is installed on the side of the conveying guide rail; a docking block is arranged on the side of the material conveying table, and a glue outlet head is rotatably connected to the side of the docking block, and a glue inlet head for externally connecting a glue conveying device to realize the supply of an adhesive is fixedly connected. The present invention can realize the full-process automatic operation of feeding, cloth supporting, glue coating, inserting and curing in the preparation of the waist tightening sheet of the split diaper, not only avoiding defects such as uneven glue amount and skewed inserting in manual operation, but also significantly improving the preparation efficiency through a continuous production mode, thereby ensuring the structural consistency and production quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of adult diapers, and particularly to an automatic inserting device and method for split adult diapers. Background Art

[0002] As an important product in the field of incontinence care, the core functions of adult diapers rely on the water absorption, comfort, and fit of a multi-layer composite structure. Traditional one-piece adult diapers usually adopt the process of wrapping the water absorption chip with a single piece of non-woven fabric, and form an "H"-shaped three-dimensional structure by cutting out leg openings and waist regions on the surface of the non-woven fabric. However, this one-piece design will generate a large amount of waste materials (about 15%-20% of the total raw materials) during the cutting process, resulting in a low utilization rate of raw materials, especially significantly increasing the cost pressure in large-scale production.

[0003] To solve the above problems, split adult diapers have gradually become the innovation direction of the industry. Its typical structure is as Figure 1 shown, which consists of a water absorption chip 1a, two main non-woven fabrics 1b laminated on both sides of the water absorption chip 1a, and four independent waist tightening pieces 1c. Specifically, the main non-woven fabric 1b is cut to form a main rectangular structure, and is laminated with the water absorption chip 1a through a hot pressing process, while the waist tightening pieces 1c need to be accurately bonded to the inserting parts 1d on both sides of the upper and lower ends of the main non-woven fabric 1b to form an adjustable waist fixing structure. The split design not only avoids the problem of raw material waste in traditional cutting, but also improves the fit and adjustability of the product through the independent waist tightening pieces 1c.

[0004] Currently, the inserting process of split diapers mainly relies on manual operation: workers need to manually apply glue to the inserting part 1d on the side of the main non-woven fabric 1b, and then insert and compact the waist tightening piece 1c. In this process, manual glue application is prone to problems such as uneven glue amount and trajectory deviation, resulting in unstable bonding strength of the waist tightening piece 1c, and even causing local delamination; at the same time, the accuracy of the inserting position depends on the operator's experience, and it is difficult to ensure the symmetry of the "H" structure, directly affecting the wearing comfort.

[0005] Therefore, it is necessary to improve the deficiencies in the prior art to solve the above problems. Summary of the Invention

[0006] The present invention overcomes the deficiencies of the prior art and provides an automatic inserting device and method for split adult diapers.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: an automatic inserting device for split adult diapers, comprising: a workbench, a material taking table arranged on both sides of the workbench for placing waist tightening pieces, and a conveying guide rail installed on the workbench;

[0008] A material conveying table for retrieving the main non-woven fabric to the insertion area is slidably connected to the top of the conveying guide rail, and a clamping mechanism for clamping the main non-woven fabric is installed on the top of the material conveying table; a cloth-supporting and hot-pressing mechanism for respectively realizing upward and downward cloth support and hot-pressing curing at the insertion part of the main non-woven fabric is installed on the side of the conveying guide rail.

[0009] A docking block is arranged on the side of the material conveying table. A glue outlet head is rotatably connected to the side of the docking block, and a glue feeding head for externally connecting a glue feeding device to supply adhesives is fixedly connected to the side of the docking block; the glue outlet head and the glue feeding head are communicated through a flow channel inside the docking block, and a plurality of glue outlet holes are formed in the side of the glue outlet head.

[0010] A multi-axis driving mechanism for driving the glue outlet head to align with the insertion part and simultaneously realizing axial translation and rotational movement is installed on the top of the workbench; a robotic arm for transporting and inserting the waist-shrinking piece to the insertion part is installed on the side of the workbench.

[0011] In a preferred embodiment of the present invention, in the planar direction, a plurality of the glue outlet holes are uniformly distributed on the side of the glue outlet head in a circumferential array manner, and in the vertical direction, a plurality of the glue outlet holes are uniformly distributed on the side of the glue outlet head in a linear array manner.

[0012] In a preferred embodiment of the present invention, the multi-axis driving mechanism includes: a mounting block fixed on one side of the docking block, a first servo motor installed on one side of the mounting block, and a driving synchronous pulley fixed on the output end of the first servo motor; a driven synchronous pulley is fixed on the side of the glue outlet head, and a toothed belt is engaged between the driving synchronous pulley and the driven synchronous pulley.

[0013] A translation frame is fixed on the top of the workbench. A threaded lead screw is rotatably connected inside the translation frame, and a second servo motor for driving the threaded lead screw to rotate is installed on one side of the translation frame; a T-shaped frame is threadedly connected to the side of the threaded lead screw, and the bottom of the T-shaped frame is slidably connected to a slide rail fixed on the top of the translation frame through a fixed slider; a two-axis translation component for driving the glue outlet head to adjust the alignment posture is installed on the side of the T-shaped frame.

[0014] In a preferred embodiment of the present invention, the two-axis translation component includes: a feeding cylinder fixed on the side of the T-shaped frame, a support plate fixed on the output end of the feeding cylinder, and an alignment block fixed on the top of the support plate near one end; one side of the support plate is slidably connected to a slide rail fixed on the side of the T-shaped frame through a fixed slider.

[0015] A first electric push rod is installed on the top of the alignment block. The output end of the first electric push rod is fixed to one side of the docking block. A guide block is fixed to the bottom of the output end of the first electric push rod. A first guide rod is fixed to one side of the guide block. The side surface of the first guide rod is sleeved with the inner side of the alignment block.

[0016] In a preferred embodiment of the present invention, the clamping mechanism includes: a plurality of rotating rods rotatably connected to the top of the feeding table, a connecting rod fixed to the side surface of the rotating rod, and a flipping cylinder fixed to both ends of the rotating rod;

[0017] One side of the flipping cylinder is fixed to one side of the feeding table. A plurality of pressing strips are fixed to one side of the connecting rod. A plurality of positioning strips are fixed to the top of the feeding table.

[0018] In a preferred embodiment of the present invention, the cloth supporting and hot pressing mechanism includes: a plurality of support rods fixed to the side surface of the feeding table, a second electric push rod fixed to the side surface of the support rod, and a synchronous translation assembly installed on the side surface of the feeding table for driving the plurality of support rods to move synchronously towards the side of the main non-woven fabric; A first connecting block and a second connecting block are sequentially fixed to the side surface of the output shaft of the second electric push rod. A second guide rod is fixed to one side of the second connecting block. The side surface of the second guide rod is sleeved with the inner sides of the first connecting block and the fixed seat of the second electric push rod;

[0019] A connecting strip is fixed to the bottoms of the first connecting block and the second connecting block. A plurality of negative pressure suction cups for realizing negative pressure adsorption are fixed to the bottom of the connecting strip near the first connecting block; A hot pressing plate is fixed to the bottom of the connecting strip near the second connecting block. A heating layer is arranged at the bottom of the hot pressing plate.

[0020] In a preferred embodiment of the present invention, the synchronous translation assembly includes: a plurality of fixed frames fixed to the side surface of the feeding table, a moving rod and a plurality of limiting rods arranged inside the fixed frames, and a third servo motor installed on the top of the fixed frames for driving the moving rod to rotate;

[0021] Both ends of the moving rod are rotatably connected to the inner side of the fixed frame. Threads with opposite directions are arranged on the side surface of the moving rod and are threadedly connected to the inner sides of the plurality of support rods; Both ends of the limiting rod are fixed to the inner side of the fixed frame. The side surfaces of the plurality of limiting rods are sleeved with the inner sides of the support rods.

[0022] In a preferred embodiment of the present invention, it further includes: a control system for realizing the automated insert production of split adult diapers by using a programmable controller.

[0023] The present invention provides an insert method for an automated insert device of split adult diapers, including the following steps:

[0024] S1. Clamp and position the main non-woven fabric composite with the water-absorbing chip on the top of the feeding table through the clamping mechanism, and convey it along the conveying guide rail to the inserting area of the workbench.

[0025] S2. Through the cloth-supporting and hot-pressing mechanism, support the cloth up and down at the inserting part of the main non-woven fabric respectively to open the inserting part, and through the multi-axis driving mechanism, drive the glue outlet head to align with the inner side of the inserting part.

[0026] S3. After the glue outlet head is aligned, supply the adhesive to the glue outlet head through the glue delivery head, discharge the glue from the glue outlet holes, and through the multi-axis driving mechanism, drive the glue outlet head to perform axial translation and rotational movement along the inner side of the inserting part.

[0027] S4. After the glue application is completed, withdraw the glue outlet head, transfer the waist band piece placed on the material taking table to the inserting part through the robotic arm, insert it into the inserting part, and cancel the cloth support downward and press it to the waist band piece through the cloth-supporting and hot-pressing mechanism.

[0028] S5. After the robotic arm withdraws, use the cloth-supporting and hot-pressing mechanism again to perform hot-pressing curing on the inserting part to realize the automated inserting production of split adult diapers.

[0029] In a preferred embodiment of the present invention, in the step of S3, the pressure of the adhesive supply is 0.2 - 0.5 MPa, the speed of the axial translation is 30 - 50 mm / s, and the rotational speed of the rotational movement is 100 - 140 rpm; in the step of S5, the pressure of the hot-pressing curing is 0.1 - 0.2 MPa, the temperature is 70 - 90 °C, and the time is 1.5 - 3 s.

[0030] The present invention solves the defects in the background technology and has the following beneficial effects:

[0031] (1) The present invention provides an automated inserting device for split adult diapers. When the main non-woven fabrics on both sides of the water-absorbing chip are clamped and positioned on the top of the feeding table through the clamping mechanism and conveyed to the inserting area of the workbench by the conveying guide rail, with the cooperation of the cloth-supporting and hot-pressing mechanism, the glue outlet head, the multi-axis driving mechanism and the robotic arm, it can realize the full-process automated operations of feeding, cloth supporting, glue application, inserting and curing for the preparation of the waist band piece of the split diaper, not only avoiding defects such as uneven glue amount and skewed inserting in manual operation, but also significantly improving the preparation efficiency through the continuous production mode, thereby ensuring the product structure consistency and production quality.

[0032] (2) In the present invention, by uniformly arranging glue injection holes on the side of the glue injection head, and in cooperation with the multi-axis drive mechanism, the combined movement of the rotational drive mechanism and the axial movement path can be utilized. The centrifugal force generated by the rotation of the glue injection head drives the glue to diffuse outward from the glue injection holes, and at the same time, the axial movement enables the glue to continuously cover along the inserting piece path. Furthermore, the superposition of these two movements prompts the glue to form a spiral wrapping layer inside the inserting piece part. The glue realizes two-way penetration in the gaps between non-woven fabric fibers, which can not only avoid the local glue accumulation or shortage caused by traditional dot coating or line coating, but also enhance the bonding interface strength between the waistband piece and the main non-woven fabric through the uniform distribution of the glue in three-dimensional space, effectively resisting the shear stress and peeling stress during use, thereby improving the product quality.

[0033] (3) The present invention provides an automated inserting method for a split adult diaper. During the glue coating process of the glue outlet head, the glue coating operation of the inserting piece part is carried out at an appropriate axial translation speed and rotational speed of the rotational movement. The glue uniformly covers the contact surface of the inserting piece part through a spiral trajectory to form a three-dimensional wrapping layer. The centrifugal force generated by the rotation makes the glue diffuse outward from the glue outlet holes, penetrate into the gaps between non-woven fabric fibers, and realize the continuous coverage of the glue layer through axial translation. Furthermore, through the coordination of the combined movement mode, it can not only avoid the local accumulation or shortage of the glue, but also enhance the mechanical anchoring effect between the glue and the substrate. Brief Description of the Drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0035] Figure 1 is the structural diagram of a split adult diaper in the prior art;

[0036] Figure 2 is the three-dimensional structural diagram of the inserting piece device in the preferred embodiment of the present invention;

[0037] Figure 3 is the three-dimensional structural diagram of the multi-axis drive mechanism in the preferred embodiment of the present invention;

[0038] Figure 4 is the semi-sectional structural diagram of the docking block in the preferred embodiment of the present invention;

[0039] Figure 5 is the connection structural diagram of the clamping mechanism and the conveying guide rail in the preferred embodiment of the present invention;

[0040] Figure 6It is the connection structure between the cloth supporting and hot pressing mechanism and the conveying guide rail of the preferred embodiment of the present invention and its partial enlarged view;

[0041] In the figure: 1a, water-absorbing chip; 1b, main non-woven fabric; 1c, waist tightening piece; 1d, inserting piece part; 1, workbench; 2, material taking table; 3, conveying guide rail; 4, material feeding table; 5, clamping mechanism; 51, rotating rod; 52, connecting rod; 53, turning cylinder; 54, pressing strip; 55, positioning strip; 6, cloth supporting and hot pressing mechanism; 61, support rod; 62, second electric push rod; 63, first connecting block; 64, second connecting block; 65, second guide rod; 66, connecting strip; 67, negative pressure suction cup; 68, hot pressing plate; 611, fixed frame; 612, moving rod; 613, limiting rod; 614, third servo motor; 7, docking block; 71, glue outlet head; 72, glue conveying head; 73, glue outlet hole; 8, multi-axis driving mechanism; 81, mounting block; 82, first servo motor; 83, driving synchronous pulley; 84, driven synchronous pulley; 85, toothed belt; 86, translation frame; 87, threaded lead screw; 88, second servo motor; 89, T-shaped frame; 811, feeding cylinder; 812, support plate; 813, alignment block; 814, first electric push rod; 815, guiding block; 816, first guide rod; 9, robotic arm. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0045] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

[0046] As Figure 2 , Figure 3 and Figure 4 shown, an automated insert sheet device for a split adult diaper includes: a workbench 1, a material taking table 2 arranged on both sides of the workbench 1 for placing the waistband sheet 1c, and a conveying guide rail 3 installed on the workbench 1; a material conveying table 4 slidably connected to the top of the conveying guide rail 3 for transferring the main non-woven fabric 1b to the insert sheet area, and a clamping mechanism 5 installed on the top of the material conveying table 4 for clamping the main non-woven fabric 1b; a cloth stretching and hot pressing mechanism 6 installed on the side of the conveying guide rail 3 for respectively realizing upward and downward cloth stretching and hot pressing curing at the insert sheet part 1d of the main non-woven fabric 1b; a docking block 7 is arranged on the side of the material conveying table 4, a glue outlet head 71 is respectively rotatably connected to the side of the docking block 7, and a glue inlet head 72 fixedly connected to an external glue conveying device for realizing the supply of adhesive is arranged; the glue outlet head 71 and the glue inlet head 72 are communicated through a flow channel inside the docking block 7, and a plurality of glue outlet holes 73 are opened on the side of the glue outlet head 71; a multi-axis driving mechanism 8 for driving the glue outlet head 71 to align with the insert sheet part 1d and simultaneously realizing axial translation and rotational movement is installed on the top of the workbench 1; a robotic arm 9 for transferring and inserting the waistband sheet 1c to the insert sheet part 1d is installed on the side of the workbench 1.

[0047] It should be noted that in the planar direction, a number of glue outlet holes 73 are evenly distributed on the side surface of the glue outlet head 71 in a circumferential array manner, and in the vertical direction, a number of glue outlet holes 73 are evenly distributed on the side surface of the glue outlet head 71 in a linear array manner. Through the uniform distribution, uniform application of the adhesive can be achieved, facilitating the adhesion of the waistband piece 1c to the main non-woven fabric 1b; the number of the multi-axis drive mechanism 8 and the robotic arm 9 is preferably four groups each, and the number of the clamping mechanism 5 and the cloth-supporting hot pressing mechanism 6 is preferably two groups each, which are used to simultaneously perform the inserting production operation on the four inserting parts 1d on the main non-woven fabric 1b; the power structure for the material conveying table 4 to slide on the conveying guide rail 3 at least includes: a power source located on the material conveying table 4 and a transmission component located between the material conveying table 4 and the conveying guide rail 3. The specific structure of the power source is a power that can output rotational motion (such as a servo motor) in the prior art, and the specific structure of the transmission component is a mechanical mechanism that can transmit rotational motion and convert it into linear motion (such as a gear rack) in the prior art, which all belong to the common knowledge in the field. Therefore, the control method and structure are not explained in detail in this application and will not be elaborated here.

[0048] Specifically, first, one end of the glue delivery head 72 is externally connected to the glue delivery device through a pipeline. Then, after the main non-woven fabric 1b compounded with the water-absorbing chip 1a is clamped and positioned on the top of the material conveying table 4 by the clamping mechanism 5, the material conveying table 4 transports it along the conveying guide rail 3 to the inserting area of the workbench 1. Through the cooperation of the cloth-supporting hot pressing mechanism 6, the inserting parts 1d of the main non-woven fabric 1b are respectively supported up and down, so that the inserting parts 1d are opened. Under the cooperation of the multi-axis drive mechanism 8, the glue outlet head 71 is driven to be positioned inside the inserting part 1d. The externally connected glue delivery device supplies the adhesive to the inserting part 1d in sequence through the glue delivery head 72, the flow channel of the docking block 7, the glue outlet head 71 and the glue outlet holes 73. At the same time, the glue outlet head 71 is driven to perform axial translation and rotational motion along the inside of the inserting part 1d. After the glue application is completed, the glue outlet head 71 is withdrawn. Through the cooperation of the robotic arm 9, the waistband piece 1c placed on the material taking table 2 is transported to the inserting part 1d and inserted into the inserting part 1d. The cloth-supporting hot pressing mechanism 6 cancels the upward support and presses down to the waistband piece 1c. After the robotic arm 9 withdraws, the cloth-supporting hot pressing mechanism 6 performs hot pressing and curing on the inserting part 1d again. Thus, the full-process automation operation of feeding, cloth-supporting, glue application, inserting and curing for the preparation of the waistband piece 1c of the split-type disposable diaper can be realized, which not only avoids defects such as uneven glue amount and skewed inserting in manual operation, but also significantly improves the preparation efficiency through the continuous production mode, thereby ensuring the product structure consistency and production quality.

[0049] Such as Figure 3 and Figure 4As shown, in some embodiments, the multi-axis drive mechanism 8 includes: a mounting block 81 fixed to one side of the docking block 7, a first servo motor 82 mounted on one side of the mounting block 81, and a driving synchronous pulley 83 fixed to the output end of the first servo motor 82; a driven synchronous pulley 84 is fixed to the side of the glue outlet head 71, and a toothed belt 85 is engaged between the driving synchronous pulley 83 and the driven synchronous pulley 84; a translation frame 86 is fixed to the top of the workbench 1, a threaded lead screw 87 is rotatably connected to the inside of the translation frame 86, and a second servo motor 88 for driving the threaded lead screw 87 to rotate is mounted on one side of the translation frame 86; a T-shaped frame 89 is threadedly connected to the side of the threaded lead screw 87, and the bottom of the T-shaped frame 89 is slidably connected to a slide rail fixed to the top of the translation frame 86 through a fixed slider; a double-axis translation assembly for driving the glue outlet head 71 to adjust the alignment posture is mounted on the side of the T-shaped frame 89.

[0050] It should be noted that the meshing accuracy of the toothed belt 85 is ±0.02 mm, which is used to ensure that the rotation angle error of the glue outlet head 71 ≤ 0.5°; the output shaft of the second servo motor 88 is fixed to one end of the threaded lead screw 87.

[0051] Specifically, when the glue outlet head 71 is aligned at the insert part 1d, the first servo motor 82 is started to drive the driving synchronous pulley 83 at the output end to rotate, and the driven synchronous pulley 84 is driven to rotate through the toothed belt 85, so as to realize the rotational movement of the glue outlet head 71. At the same time, the second servo motor 88 is started to drive the threaded lead screw 87 to rotate inside the translation frame 86, so that the T-shaped frame 89 threadedly connected to the threaded lead screw 87 realizes translational movement on the top of the translation frame 86 through the cooperation of the slider and the slide rail, so as to realize the simultaneous axial translation and rotational movement of the glue outlet head 71, meet the glue application requirements and improve the operability.

[0052] In some embodiments, the double-axis translation assembly includes: a feeding cylinder 811 fixed to the side of the T-shaped frame 89, a support plate 812 fixed to the output end of the feeding cylinder 811, and an alignment block 813 fixed to the top of the support plate 812 near one end; one side of the support plate 812 is slidably connected to a slide rail fixed to the side of the T-shaped frame 89 through a fixed slider; a first electric push rod 814 is mounted on the top of the alignment block 813, the output end of the first electric push rod 814 is fixed to one side of the docking block 7, a guide block 815 is fixed to the bottom of the output end of the first electric push rod 814, and a first guide rod 816 is fixed to one side of the guide block 815, and the side of the first guide rod 816 is sleeved inside the alignment block 813.

[0053] Specifically, before the gluing operation, the supporting plate 812 is driven by the feeding cylinder 811, so that the supporting plate 812 is slidably connected to the slide rail on the side of the T-shaped frame 89 through the slider, realizing the translation of the supporting plate 812 in one direction. Furthermore, the vertical translation of the glue outlet head 71 can be adjusted, so that the glue outlet head 71 is positioned at the middle of the insertion part 1d. At the same time, the output end of the first electric push rod 814 is fixed to the docking block 7. Meanwhile, by using the guiding block 815 fixed at the bottom of the output end of the first electric push rod 814, the guiding block 815 is sleeved inside the alignment block 813 through the first guiding rod 816 for limiting and anti-deviation. When the first electric push rod 814 expands and contracts, it drives the docking block 7 and the glue outlet head 71 to translate in another direction, thereby realizing the biaxial translation of the glue outlet head 71 and adjusting the alignment posture of the glue outlet head 71 when gluing to the insertion part 1d, improving its flexibility.

[0054] As Figure 5 shown, in some embodiments, the clamping mechanism 5 includes: a plurality of rotating rods 51 rotatably connected to the top of the feeding table 4, connecting rods 52 fixed to the sides of the rotating rods 51, and flipping cylinders 53 fixed to both ends of the rotating rods 51; one side of the flipping cylinder 53 is fixed to one side of the feeding table 4, a plurality of pressing strips 54 are fixed to one side of the connecting rod 52, and a plurality of positioning strips 55 are fixed to the top of the feeding table 4.

[0055] It should be noted that the flip angle of the flipping cylinder 53 is 0-90°, and the torque is 2-3 N·m; the number of the pressing strips 54 and the positioning strips 55 in each clamping mechanism 5 is preferably two. The distance between the two pressing strips 54 and the distance between the two positioning strips 55 are the same, and the insertion part 1d is respectively placed therebetween, for forming a clamping force at the edge of the insertion part 1d while ensuring that the main non-woven fabric 1b has no displacement.

[0056] Specifically, the main non-woven fabric 1b after being compounded with the water-absorbing chip 1a is placed on the top of the feeding table 4, and the insertion part 1d is placed between the two positioning strips 55. The flipping cylinder 53 is started to drive the rotating rod 51 to rotate, driving the connecting rod 52 and the pressing strip 54 to flip 90°, so that the pressing strip 54 cooperates with the positioning strip 55 fixed to the top of the feeding table 4, thereby realizing the clamping and fixing of the main non-woven fabric 1b and avoiding material deformation caused by single-point pressing.

[0057] As Figure 6As shown in the figure, in some embodiments, the cloth-supporting hot-pressing mechanism 6 includes: a plurality of support rods 61 fixed to the side of the material-feeding table 4, a second electric push rod 62 fixed to the side of the support rod 61, and a synchronous translation assembly installed on the side of the material-feeding table 4 for driving the plurality of support rods 61 to move synchronously towards the side of the main non-woven fabric 1b; a first connecting block 63 and a second connecting block 64 are sequentially fixed to the side of the output shaft of the second electric push rod 62, a second guide rod 65 is fixed to one side of the second connecting block 64, and the sides of the second guide rod 65 are respectively sleeved with the inner sides of the first connecting block 63 and the fixed seat of the second electric push rod 62; a connecting strip 66 is fixed to the bottoms of the first connecting block 63 and the second connecting block 64, and a plurality of negative-pressure suction cups 67 for realizing negative-pressure adsorption are fixed to the bottom of the connecting strip 66 close to the first connecting block 63; a hot pressing plate 68 is fixed to the bottom of the connecting strip 66 close to the second connecting block 64, and a heating layer is provided at the bottom of the hot pressing plate 68.

[0058] It should be noted that each group of cloth-supporting hot-pressing mechanisms 6 includes two support rods 61, which are respectively located at the top and bottom of the main non-woven fabric 1b and are used to simultaneously support the cloth and hot-press and cure the top and bottom parts of the main non-woven fabric 1b; the number of negative-pressure suction cups 67 on each connecting strip 66 is at least two and they are symmetrically distributed, which are used to realize the cloth-supporting operation at at least two points of the insertion piece part 1d on one side of the main non-woven fabric 1b respectively, and one end of the negative-pressure suction cup 67 is externally connected to a vacuum extraction device (such as a vacuum pump) through a pipeline to form a relatively closed vacuum system. When the vacuum extraction device is started, the air pressure in the system decreases to form negative pressure, resulting in an increase in the air pressure difference between the negative-pressure suction cup 67 and the main non-woven fabric 1b, thereby realizing the adsorption effect; the heating layer is heated by means of thermal radiation or heat conduction.

[0059] Specifically, for the cloth-supporting operation: first, externally connect one end of the negative-pressure suction cup 67 to a extraction device through a pipeline, start the telescopic movement of the second electric push rod 62, drive the connecting strip 66 to move through the first connecting block 63 and the second connecting block 64, and limit and prevent deviation of the first connecting block 63 and the second connecting block 64 through the first guide rod 816, so that the negative-pressure suction cup 67 moves to the top of the insertion piece part 1d. Through the cooperation of the synchronous translation assembly, drive the two support rods 61 to move synchronously towards the side of the main non-woven fabric 1b. After the adsorption end of the negative-pressure suction cup 67 contacts the insertion piece part 1d, start the externally connected vacuum extraction device to form negative pressure, so that the air pressure difference between the negative-pressure suction cup 67 and the main non-woven fabric 1b increases, and adsorption can be realized. Then drive the two support rods 61 to move synchronously in the reverse direction, and the cloth can be supported, which is convenient for gluing and the insertion operation of the waistband piece 1c. Moreover, after the waistband piece 1c is inserted into the insertion piece part 1d by the robotic arm 9, make the negative-pressure suction cups 67 on the upper two sides approach synchronously, and the inserted waistband piece 1c can be clamped, so that the clamping end of the robotic arm 9 can be smoothly withdrawn.

[0060] Hot pressing and curing operation: After inserting the insert piece so that the waist constriction piece 1c is located at the insert position 1d, start the telescopic movement of the second electric push rod 62 to move the hot pressing plate 68 to the top of the insert position 1d. Through the cooperation of the synchronous translation component, drive the two support rods 61 to move synchronously towards the side of the main non-woven fabric 1b, so that the contact surface of the hot pressing plate 68 contacts the insert position 1d. Through heat radiation or heat conduction by the heating sheet, hot pressing and curing can be achieved, thereby improving the bonding strength of the waist constriction piece 1c.

[0061] In some embodiments, the synchronous translation component includes: a plurality of fixed frames 611 fixed to the side of the feeding table 4, a moving rod 612 and a plurality of limiting rods 613 arranged inside the fixed frame 611, and a third servo motor 614 installed on the top of the fixed frame 611 for driving the moving rod 612 to rotate; both ends of the moving rod 612 are rotatably connected to the inner side of the fixed frame 611, the side of the moving rod 612 is provided with threads in opposite directions and is threadedly connected to the inner side of a plurality of support rods 61; both ends of the limiting rod 613 are fixed to the inner side of the fixed frame 611, and the sides of a plurality of limiting rods 613 are sleeved with the inner sides of the support rods 61.

[0062] It should be noted that the output shaft of the third servo motor 614 is rotatably connected to one end of the moving rod 612; a plurality of support rods 61 are symmetrically arranged on the side of the moving rod 612 and are symmetrically arranged with the middle of the moving rod 612 as the axis of symmetry. At the same time, the middle of the moving rod 612 is in the same plane as the insert position 1d, so as to ensure that the negative pressure suction cups 67 or the hot pressing plates 68 at the top and bottom of the main non-woven fabric 1b can contact the surface of the insert position 1d synchronously.

[0063] Specifically, when driving the support rods 61 to move synchronously, by starting the third servo motor 614, the moving rod 612 at the output end is driven to rotate inside the fixed frame 611. Since the side of the moving rod 612 is provided with threads in opposite directions and is threadedly connected to the inner sides of a plurality of support rods 61, the limiting rod 613 limits the support rods 61, so that the support rods 61 are synchronously translated towards the side of the main non-woven fabric 1b, thereby driving the relevant components in the cloth-supporting and hot-pressing mechanism 6 to move synchronously towards the side of the main non-woven fabric 1b, realizing the up-and-down cloth-supporting and hot-pressing and curing operations on the insert position 1d of the main non-woven fabric 1b.

[0064] In some embodiments, it further includes: a control system for realizing the automated insert production of split adult diapers by using a programmable controller.

[0065] It should be noted that the control system is electrically connected to the control module of the flipping cylinder 53, the second electric push rod 62, the control module of the negative pressure suction cup 67, the heating layer, the third servo motor 614, the first servo motor 82, the second servo motor 88, the control module of the feeding cylinder 811, the first electric push rod 814 and the robotic arm 9 respectively; the control method of the control system and the control circuit for realizing full-automatic production are prior arts and can be realized by those skilled in the art through programming, which belongs to the common general knowledge in this field. Therefore, the control method and modules will not be explained in detail in this application and will not be elaborated here; through the control system, the full-automatic chip inserting production control of the equipment can be realized, the intelligent level of the equipment is improved, and the monitoring and adjustment of the production process are facilitated.

[0066] To further make the purpose and effect of the present invention simple and easy to understand, the present invention will be further elaborated in combination with the following specific embodiments and comparative examples; among them, the length of the chip inserting part is 20 cm, and the diameter of the glue outlet hole is 1.3 mm; the model of the adhesive is Henkel TECHNOMELT AS 8998, and the viscosity is 11000 mPa·s (120 °C). Embodiment 1

[0067] A chip inserting method for an automatic chip inserting device of a split adult diaper, characterized by comprising the following steps:

[0068] S1. Through the clamping mechanism 5, the main non-woven fabric 1b compounded with the water-absorbing chip 1a is clamped and positioned at the top of the feeding table 4, and is conveyed along the conveying guide rail 3 to the chip inserting area of the workbench 1;

[0069] S2. Through the cloth stretching and hot pressing mechanism 6, the chip inserting part 1d of the main non-woven fabric 1b is stretched up and down respectively to open the chip inserting part 1d, and through the multi-axis driving mechanism 8, the glue outlet head 71 is driven to be positioned inside the chip inserting part 1d;

[0070] S3. After the glue outlet head 71 is positioned, the adhesive is supplied to the glue outlet head 71 by the glue conveying head 72 at a pressure of 0.3 MPa, the glue is discharged from the glue outlet hole 73, and through the multi-axis driving mechanism 8, the glue outlet head 71 is driven to axially translate along the inside of the chip inserting part 1d at a speed of 40 mm / s, and at the same time rotate at a speed of 120 rpm;

[0071] S4. After the glue application is completed, the glue outlet head 71 is withdrawn, and through the robotic arm 9, the waistband piece 1c placed on the material taking table 2 is transported to the chip inserting part 1d and inserted into the chip inserting part 1d, and the cloth stretching and hot pressing mechanism 6 cancels the upward cloth stretching and presses down to the waistband piece 1c;

[0072] After the robotic arm 9 withdraws, the cloth support and hot pressing mechanism 6 is used again to hot press and cure the insert part 1d at a pressure of 0.1 MPa and a temperature of 80 °C for 2 s, realizing the automated insert production of split adult diapers. Example 2

[0073] This example is basically the same as Example 1, except that in the step of S3, the axial translation speed is 30 mm / s. Example 3

[0074] This example is basically the same as Example 1, except that in the step of S3, the axial translation speed is 50 mm / s. Example 4

[0075] This example is basically the same as Example 1, except that in the step of S3, the rotational speed of the rotational motion is 100 rpm. Example 5

[0076] This example is basically the same as Example 1, except that in the step of S3, the rotational speed of the rotational motion is 140 rpm.

[0077] Comparative Example 1

[0078] This comparative example is basically the same as Example 1, except that the glue outlet head 71 has no rotational motion. The step of S3 is specifically as follows: after the glue outlet head 71 is aligned, the glue supply head 72 supplies adhesive to the glue outlet head 71 at a pressure of 0.3 MPa, the glue exits from the glue outlet hole 73, and the multi-axis drive mechanism 8 drives the glue outlet head 71 to axially translate along the inner side of the insert part 1d at a speed of 40 mm / s.

[0079] Comparative Example 2

[0080] This comparative example is basically the same as Example 1, except that in the step of S3, the axial translation speed is 20 mm / s.

[0081] Comparative Example 3

[0082] This comparative example is basically the same as Example 1, except that in the step of S3, the axial translation speed is 60 mm / s.

[0083] Comparative Example 4

[0084] This comparative example is basically the same as Example 1, except that in the step of S3, the rotational speed of the rotational motion is 90 rpm.

[0085] Comparative Example 5

[0086] This comparative example is basically the same as Example 1, the difference being that: in the step of S3, the rotational speed of the rotational motion is 150 rpm.

[0087] Performance testing: For the split adult diapers prepared in Examples 1-5 and Comparative Examples 1-5, the bonding strength between the waist restraint piece 1c and the insertion part 1d of the main non-woven fabric 1b was tested, and the results are shown in Table 1.

[0088] Bonding strength test: Referring to GB / T 2792-2014 "Test Methods for Peel Strength of Adhesive Tapes", the average value was taken after 3 parallel tests.

[0089] Table 1: Performance test results

[0090]

[0091] It can be seen from Table 1 that:

[0092] By comparing Examples 1-5 with Comparative Example 1, it can be known that: by controlling the axial translation speed and the rotational speed of the rotational motion of the glue outlet head 71 during the glue coating process, the glue liquid uniformly covers the contact surface of the insertion part 1d through a spiral trajectory, forming a three-dimensional wrapping layer. The centrifugal force generated by the rotation causes the glue liquid to spread outward from the glue outlet hole 73, penetrate into the gaps between the non-woven fibers, and achieve continuous coverage of the glue layer through axial translation. Then, through the coordination of the compound motion mode, it can not only avoid local accumulation or lack of glue liquid, but also enhance the mechanical anchoring effect between the glue liquid and the substrate. In Comparative Example 1, only axial translation (without rotation) was adopted, and the glue liquid was linearly distributed, unable to fully penetrate the fiber gaps, resulting in a decrease in the effective coverage rate of the glue layer. The bonding interface only relied on surface adhesion, and the shear stress was concentrated in local areas, and finally the bonding strength decreased to 1.5 N / cm.

[0093] By comparing Examples 1-3 with Comparative Examples 2-3, it can be known that: in Example 2, the lower speed increased the coating amount of the glue liquid per unit length, but too low a translation speed (such as 20 mm / s in Comparative Example 2) would cause the glue liquid to accumulate near the glue outlet hole 73, forming a locally too thick glue layer, while the glue amount in the adjacent area was insufficient, affecting the continuity of the bonding interface. In Example 3 (50 mm / s), the higher speed could improve the efficiency, but when approaching Comparative Example 3 (60 mm / s), the coating time of the glue liquid was shortened, and the insufficient glue amount led to a reduction in the fiber penetration depth, and the glue layer could not form an effective anchoring structure, resulting in a significant reduction in the bonding strength. Therefore, an appropriate axial translation speed balanced the glue amount control and the coating efficiency, enabling the glue liquid to uniformly penetrate under the assistance of rotation and achieving the best bonding effect.

[0094] From the comparison between Example 1 and Examples 4-5 and Comparative Examples 4-5, it can be seen that in Example 4, at a relatively low rotational speed, the centrifugal force is insufficient, the diffusion range of the glue solution is limited, and some fiber gaps are not filled, resulting in a reduction in the bonding area. In Comparative Example 4 (90 rpm), when the rotational speed is further reduced, the glue solution cannot even overcome the surface tension and forms discontinuous glue lines. In Example 5, a relatively high rotational speed enhances the centrifugal penetration effect. However, when approaching Comparative Example 5 (150 rpm), the glue solution splashes due to excessive centrifugal force, and the glue amount in some areas is insufficient, resulting in uneven glue layer thickness. Therefore, an appropriate rotational speed enables the glue solution to form a continuous spiral glue layer under the synergistic action of centrifugal force and viscosity recovery characteristics, ensuring both the penetration depth and avoiding splashing, thereby maintaining the bonding strength stable at 2.8 N / cm.

[0095] Based on the ideal embodiments of the present invention as an inspiration, through the above description, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0096] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automated inserting device for a split adult diaper, characterized in that, Including: A workbench, pick-up tables arranged on both sides of the workbench for placing the waist cinching pieces, and a conveying guide rail installed on the workbench; A material conveying table slidably connected to the top of the conveying guide rail for transferring the main non-woven fabric to the inserting area, and a clamping mechanism for clamping the main non-woven fabric is installed on the top of the material conveying table; A cloth spreading and hot pressing mechanism for respectively realizing upper and lower cloth spreading and hot pressing curing on the inserting part of the main non-woven fabric is installed on the side of the conveying guide rail; The cloth spreading and hot pressing mechanism includes: a plurality of support rods fixed to the side of the material conveying table, a second electric push rod fixed to the side of the support rods, and a synchronous translation component installed on the side of the material conveying table for driving the plurality of support rods to synchronously move towards the side of the main non-woven fabric; A first connecting block and a second connecting block are sequentially fixed to the side of the output shaft of the second electric push rod, a second guide rod is fixed to one side of the second connecting block, and the side of the second guide rod is respectively sleeved with the inner sides of the first connecting block and the fixed seat of the second electric push rod; A connecting strip is fixed to the bottoms of the first connecting block and the second connecting block, and a plurality of negative pressure suction cups for realizing negative pressure suction are fixed to the bottom of the connecting strip near the first connecting block; A hot pressing plate is fixed to the bottom of the connecting strip near the second connecting block, and a heating layer is arranged at the bottom of the hot pressing plate; A docking block is arranged on the side of the material conveying table, a glue outlet head is rotatably connected to the side of the docking block, and a glue input head for externally connecting a glue conveying device to supply adhesives is fixedly connected; The glue outlet head and the glue input head are communicated through a flow channel inside the docking block, and a plurality of glue outlet holes are formed on the side of the glue outlet head; A multi-axis driving mechanism for driving the glue outlet head to align with the inserting part and simultaneously realizing axial translation and rotational movement is installed on the top of the workbench; The multi-axis driving mechanism includes: a mounting block fixed to one side of the docking block, a first servo motor installed on one side of the mounting block, and a driving synchronous pulley fixed to the output end of the first servo motor; A driven synchronous pulley is fixed to the side of the glue outlet head, and a toothed belt is engaged between the driving synchronous pulley and the driven synchronous pulley; A translation frame is fixed to the top of the workbench, a threaded lead screw is rotatably connected to the inside of the translation frame, and a second servo motor for driving the threaded lead screw to rotate is installed on one side of the translation frame; A T-shaped frame is threadedly connected to the side of the threaded lead screw, and the bottom of the T-shaped frame is slidably connected to a slide rail fixed to the top of the translation frame through a fixed slider; A two-axis translation component for driving the glue outlet head to adjust the alignment posture is installed on the side of the T-shaped frame; A robotic arm for transporting and inserting the waist cinching pieces to the inserting part is installed on the side of the workbench.

2. The automated insert device for a split adult diaper according to claim 1, characterized in that: In the plane direction, a plurality of the glue outlet holes are evenly distributed on the side of the glue outlet head in a circumferential array manner, and in the vertical direction, a plurality of the glue outlet holes are evenly distributed on the side of the glue outlet head in a linear array manner.

3. The automated insert device for a split adult diaper according to claim 1, wherein: The double-axis translation assembly includes: a feeding air cylinder fixed to the side of the T-shaped frame, a support plate fixed to the output end of the feeding air cylinder, and an alignment block fixed to the top of the support plate near one end; one side of the support plate is slidably connected to a slide rail fixed to the side of the T-shaped frame through a fixed slider; A first electric push rod is installed on the top of the alignment block, the output end of the first electric push rod is fixed to one side of the docking block, a guide block is fixed to the bottom of the output end of the first electric push rod, a first guide rod is fixed to one side of the guide block, and the side of the first guide rod is sleeved with the inner side of the alignment block.

4. An automated inserting device for a split adult diaper according to claim 1, characterized in that: The clamping mechanism includes: a plurality of rotating rods rotatably connected to the top of the material conveying table, a connecting rod fixed to the side of the rotating rod, and a flipping air cylinder fixed to both ends of the rotating rod; One side of the flipping air cylinder is fixed to one side of the material conveying table, a plurality of pressing strips are fixed to one side of the connecting rod, and a plurality of positioning strips are fixed to the top of the material conveying table.

5. An automated inserting device for a split adult diaper according to claim 1, characterized in that: The synchronous translation assembly includes: a plurality of fixed frames fixed to the side of the material conveying table, a moving rod and a plurality of limiting rods arranged inside the fixed frames, and a third servo motor installed on the top of the fixed frames for driving the moving rod to rotate; Both ends of the moving rod are rotatably connected to the inner side of the fixed frame, the side of the moving rod is provided with threads in opposite directions and is threadedly connected to the inner sides of a plurality of support rods; both ends of the limiting rods are fixed to the inner side of the fixed frame, and the sides of a plurality of the limiting rods are sleeved with the inner sides of the support rods.

6. The automated insert device for a split adult diaper according to claim 1, characterized in that: It further includes: A control system for realizing the automated inserting production of split adult diapers by using a programmable controller.

7. The inserting method of an inserting device for a split adult diaper according to any one of claims 1-6, characterized in that It includes the following steps: S1. Through the clamping mechanism, the main non-woven fabric compounded with the water-absorbing chip is clamped and positioned on the top of the material conveying table, and is conveyed along the conveying guide rail to the inserting area of the workbench; S2. Through the cloth-stretching and hot-pressing mechanism, the inserting part of the main non-woven fabric is stretched up and down respectively to open the inserting part, and through the multi-axis driving mechanism, the glue outlet head is driven to align inside the inserting part; After the glue outlet head is aligned, the adhesive is supplied to the glue outlet head through the glue delivery head, the glue exits from the glue outlet holes, and through the multi-axis driving mechanism, the glue outlet head is driven to perform axial translation and rotational movement along the inside of the inserting part; After the glue application is completed, the glue outlet head is withdrawn, and through the robotic arm, the waistband pieces placed on the material taking table are transported to the inserting part and inserted into the inserting part, and the cloth-stretching and hot-pressing mechanism cancels the cloth stretching downward and presses it onto the waistband pieces; After the robotic arm withdraws, the cloth-stretching and hot-pressing mechanism is used again to perform hot-pressing and curing on the inserting part to realize the automated inserting production of split adult diapers.

8. The inserting method of the inserting device for the split adult diaper according to claim 7, characterized in that: In the step of S3, the pressure of the adhesive supply is 0.2 - 0.5 MPa, the speed of the axial translation is 30 - 50 mm / s, and the rotation speed of the rotational movement is 100 - 140 rpm; in the step of S5, the pressure of the hot-pressing and curing is 0.1 - 0.2 MPa, the temperature is 70 - 90 °C, and the time is 1.5 - 3 s.

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