Automatic paper diaper inserting equipment and method for split type adult paper diapers

Abstract

The invention discloses an automatic sheet inserting device and method for split adult paper diapers, and relates to the field of paper diapers, the sheet inserting device comprises a workbench, material taking tables arranged on the two sides of the workbench, and a conveying guide rail installed on the workbench; the top of the conveying guide rail is slidably connected with a material conveying table, and a clamping mechanism is installed at the top of the material conveying table. A cloth supporting hot-pressing mechanism is installed on the side face of the conveying guide rail. A butt joint block is arranged on the side face of the material conveying table, and the side face of the butt joint block is rotationally connected with a glue outlet head and fixedly connected with a glue conveying head used for being externally connected with glue conveying equipment to achieve adhesive supply. The full-process automatic operation of feeding, cloth supporting, gluing, sheet inserting and curing of split type paper diaper girdling sheet inserting preparation can be achieved, the defects that in manual operation, the glue amount is not uniform, sheet inserting is inclined and the like are overcome, the preparation efficiency is remarkably improved through a continuous production mode, and therefore the product structure consistency and the production quality are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of adult diapers, and particularly relates 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 the multi-layer composite structure. Traditional one-piece adult diapers usually adopt the process of wrapping the water-absorbing chip with a single piece of non-woven fabric, and form an "H"-shaped three-dimensional structure by cutting out leg openings and waist areas 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 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 in the industry. Its typical structure is as Figure 1 shown, which consists of a water-absorbing chip 1a, two main non-woven fabrics 1b laminated on both sides of the water-absorbing chip 1a, and four independent waist cinchers 1c. Specifically, the main non-woven fabric 1b is cut to form a main rectangular structure, and is laminated with the water-absorbing chip 1a through a hot pressing process, while the waist cincher 1c needs 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 cincher 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 cincher 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 cincher 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" - shaped 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 cinchers, and a conveying guide rail installed on the workbench; A material conveying table for retrieving the main non-woven fabric to the inserting 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 upper and lower cloth support and hot-pressing curing at the inserting part of the main non-woven fabric is installed on the side of the conveying guide rail. 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 supply head for externally connecting a glue supply device to supply adhesives is fixedly connected to the side of the docking block; the glue outlet head and the glue supply 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. A multi-axis driving mechanism for driving the glue outlet head to be aligned with the inserting 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 tightening pieces to the inserting part is installed on the side of the workbench.

[0008] 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.

[0009] 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. A translation frame is fixed on 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 on the top of the translation frame through a fixed slider; a double-axis translation assembly for driving the glue outlet head to adjust the alignment posture is installed on the side of the T-shaped frame.

[0010] In a preferred embodiment of the present invention, the double-axis translation assembly 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. 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, and a first guide rod is fixed to one side of the guide block, and the side of the first guide rod is sleeved inside the alignment block.

[0011] 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, connecting rods fixed to the sides of the rotating rods, and flipping cylinders fixed to both ends of the rotating rods; 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, and a plurality of positioning strips are fixed to the top of the feeding table.

[0012] 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 of the feeding table, second electric push rods fixed to the sides of the support rods, and a synchronous translation assembly installed on the side 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 of the output shaft of the second electric push rod, a second guiding rod is fixed to one side of the second connecting block, and the sides of the second guiding rod are respectively sleeved inside 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, 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, and a heating layer is arranged at the bottom of the hot pressing plate.

[0013] In a preferred embodiment of the present invention, the synchronous translation assembly includes: a plurality of fixed frames fixed to the side 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; Both ends of the moving rod are rotatably connected to the inside of the fixed frame, threads with opposite directions are arranged on the side of the moving rod and are threadedly connected to the inside of the plurality of support rods; both ends of the limiting rod are fixed to the inside of the fixed frame, and the sides of the plurality of limiting rods are sleeved inside the support rods.

[0014] 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.

[0015] The present invention provides an insert method for an automated insert device of split adult diapers, including 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 feeding table, and is conveyed along the conveying guide rail to the insert area of the workbench; S2. Through the cloth-supporting and hot-pressing mechanism, the insert parts of the main non-woven fabric are respectively supported from above and below, so that the insert parts are opened, and through the multi-axis driving mechanism, the glue outlet head is driven to be aligned inside the insert parts; S3. After the glue outlet head is aligned, the adhesive is supplied to the glue outlet head through the glue delivery head. The glue exits through the glue outlet holes, and through the multi-axis drive mechanism, the glue outlet head is driven to perform axial translation and rotational motion along the inner side of the inserting part; S4. After the glue application is completed, the glue outlet head is withdrawn. 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. The supporting cloth is removed downward by the supporting cloth hot pressing mechanism and pressed down to the waistband pieces; S5. After the robotic arm withdraws, the supporting cloth hot pressing mechanism is used again to perform hot pressing and curing on the inserting part, realizing the automated inserting production of split adult diapers.

[0016] 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 motion 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.

[0017] The present invention solves the defects existing in the background technology and has the following beneficial effects: (1) The present invention provides an automated inserting device for split adult diapers. When the main non-woven fabrics laminated on both sides of the water-absorbing chip are clamped and positioned at the top of the feeding table by the clamping mechanism and conveyed to the inserting area of the workbench by the conveying guide rail, with the cooperation of the supporting cloth hot pressing mechanism, the glue outlet head, the multi-axis drive mechanism and the robotic arm, it can realize the full-process automated operations of feeding, supporting cloth, glue application, inserting and curing for the preparation of the waistband pieces of split diapers, not only avoiding defects such as uneven glue amount and skewed inserting in manual operations, but also significantly improving the preparation efficiency through the continuous production mode, thus ensuring the product structure consistency and production quality.

[0018] (2) In the present invention, by evenly opening glue injection holes on the side of the glue injection head, with the cooperation of the glue injection head and the multi-axis drive mechanism, it can utilize the compound motion of the rotational drive mechanism and the axial movement path to synergistically drive the centrifugal force of the rotation of the glue injection head to spread the glue liquid outward from the glue injection holes, and at the same time the axial movement makes the glue liquid continuously cover along the inserting path. Furthermore, the superposition of the two motions causes the glue liquid to form a spiral wrapping layer inside the inserting part, and the glue liquid realizes two-way penetration in the gaps between the non-woven fabric fibers, which can not only avoid local glue amount accumulation or deficiency caused by traditional dot coating or line coating, but also enhance the bonding interface strength between the waistband pieces and the main non-woven fabric through the uniform distribution of the glue liquid in the three-dimensional space, effectively resisting the shear stress and peeling stress during use, thereby improving the product quality.

[0019] (3)The present invention provides an automated inserting method for split adult diapers. During the glue coating process, the glue outlet head is controlled to perform glue coating operations on the inserting parts at an appropriate axial translation speed and the rotation speed of rotational motion. The glue liquid uniformly covers the contact surface of the inserting parts through a spiral trajectory, forming a three-dimensional wrapping layer. The centrifugal force generated by rotation causes the glue liquid to spread outward from the glue outlet holes, penetrate into the gaps between non-woven fabric fibers, and achieve continuous coverage of the glue layer through axial translation. Furthermore, through the coordination of the composite 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. Description of the Drawings

[0020] In order 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 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; Figure 1 It is a structural diagram of a split adult diaper in the prior art; Figure 2 It is a three-dimensional structural diagram of the inserting device according to the preferred embodiment of the present invention; Figure 3 It is a three-dimensional structural diagram of the multi-axis drive mechanism according to the preferred embodiment of the present invention; Figure 4 It is a half-sectional structural diagram of the docking block according to the preferred embodiment of the present invention; Figure 5 It is a connection structural diagram of the clamping mechanism and the conveying guide rail according to the preferred embodiment of the present invention; Figure 6 It is a connection structural diagram of the cloth supporting and hot pressing mechanism and the conveying guide rail and its partial enlarged view according to the preferred embodiment of the present invention; In the figure: 1a, water-absorbing chip; 1b, main non-woven fabric; 1c, waistband 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, flipping cylinder; 54, pressing strip; 55, positioning strip; 6, cloth-supporting 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-transporting 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 mode

[0021] 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 work shall fall within the protection scope of the present invention.

[0022] In the following description, many specific details are set forth 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.

[0023] 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, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting 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 indicating 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 stated, the meaning of "plurality" is two or more.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can 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 according to specific circumstances.

[0025] As Figure 2 , Figure 3 and Figure 4 shown, an automatic inserting 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 piece 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 inserting 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 supporting and hot pressing mechanism 6 installed on the side of the conveying guide rail 3 for respectively realizing upper and lower cloth supporting and hot pressing curing on the inserting part 1d of the main non-woven fabric 1b; a docking block 7 is arranged on the side of the material conveying table 4, and a glue outlet head 71 is rotatably connected to the side of the docking block 7, and a glue feeding head 72 fixedly connected for externally connecting a glue feeding device to supply an adhesive is arranged; the glue outlet head 71 and the glue feeding head 72 are communicated through a flow channel inside the docking block 7, and a plurality of glue outlet holes 73 are formed on the side of the glue outlet head 71; a multi-axis driving mechanism 8 installed on the top of the workbench 1 for driving the glue outlet head 71 to be aligned with the inserting part 1d and simultaneously realizing axial translation and rotational movement; a robotic arm 9 installed on the side of the workbench 1 for transferring and inserting the waistband piece 1c to the inserting part 1d.

[0026] 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 assembly located between the material conveying table 4 and the conveying guide rail 3. The specific structure of the power source is a prior art power that can output rotational motion (such as a servo motor), and the specific structure of the transmission assembly is a prior art mechanical mechanism that can transmit rotational motion and convert it into linear motion (such as a gear rack), which are all common general knowledge in the art. Therefore, the application does not explain the control method and structure in detail and will not elaborate here.

[0027] 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 at the top of the material conveying table 4 by the clamping mechanism 5, the material conveying table 4 conveys 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 from above and below to make the inserting parts 1d open. 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 withdraws. 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 cloth support downward 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 inserting 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.

[0028] 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 the slide rail fixed to the top of the translation frame 86 through a fixed slider; a two-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.

[0029] 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.

[0030] 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, thereby realizing 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.

[0031] In some embodiments, the two-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 the 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.

[0032] Specifically, before the gluing operation, the support plate 812 is driven by the feeding cylinder 811, so that the support 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 support plate 812 in one direction. Furthermore, the vertical translation of the glue applicator head 71 can be adjusted, so that the glue applicator head 71 is positioned at the middle of the inserting part 1d. At the same time, the output end of the first electric push rod 814 is fixed to the docking block 7. Moreover, 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 preventing deviation. When the first electric push rod 814 expands and contracts, it drives the docking block 7 and the glue applicator head 71 to translate in another direction, thereby realizing the two-axis translation of the glue applicator head 71 and adjusting the alignment posture of the glue applicator head 71 when gluing to the inserting part 1d, improving its flexibility.

[0033] 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.

[0034] It should be noted that the flippable 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 distances between the two pressing strips 54 and between the two positioning strips 55 are the same, and the inserting part 1d is respectively placed therebetween, for forming a clamping force at the edge of the inserting part 1d while ensuring that the main non-woven fabric 1b has no displacement.

[0035] Specifically, the main non-woven fabric 1b compounded with the water-absorbing chip 1a is placed on the top of the feeding table 4, and the inserting 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.

[0036] As Figure 6As shown, in some embodiments, the cloth supporting and hot pressing mechanism 6 includes: a plurality of support rods 61 fixed to the side of the material conveying table 4, a second electric push rod 62 fixed to the side of the support rods 61, and a synchronous translation assembly installed on the side of the material conveying table 4 for driving the plurality of support rods 61 to synchronously move 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 inside 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 arranged at the bottom of the hot pressing plate 68.

[0037] It should be noted that each set of the cloth supporting and hot pressing mechanism 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, and are used to respectively perform the cloth supporting operation at at least two points of the insertion part 1d on one side of the main non-woven fabric 1b. 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, forming a 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 heat radiation or heat conduction.

[0038] 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 part 1d. Through the cooperation of the synchronous translation assembly, drive the two support rods 61 to synchronously move towards the side of the main non-woven fabric 1b. After the adsorption end of the negative pressure suction cup 67 contacts the insertion part 1d, start the externally connected vacuum extraction device to form a 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 synchronously move 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 part 1d by the robotic arm 9, the negative pressure suction cups 67 on the upper two sides are synchronously close to clamp the inserted waistband piece 1c, so that the clamping end of the robotic arm 9 can be smoothly withdrawn.

[0039] Hot pressing and curing operation: After inserting the insert piece so that the waist constriction piece 1c is located at the insert part 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 part 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 part 1d, and perform heat radiation or heat conduction through the heating sheet, so as to achieve hot pressing and curing and improve the bonding strength of the waist constriction piece 1c.

[0040] In some embodiments, the synchronous translation component includes: a plurality of fixed frames 611 fixed on 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, and 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 side of a plurality of limiting rods 613 is sleeved with the inner side of the support rod 61.

[0041] 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 part 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 part 1d synchronously.

[0042] Specifically, when driving the support rods 61 to move synchronously, by starting the third servo motor 614, drive the moving rod 612 at the output end 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 side of a plurality of support rods 61, the limiting rod 613 limits the support rod 61, so that the support rod 61 realizes synchronous translation towards the side of the main non-woven fabric 1b, thereby driving the relevant components in the cloth support and hot pressing mechanism 6 to move synchronously towards the side of the main non-woven fabric 1b, and realizing the up and down cloth support and hot pressing and curing operations on the insert part 1d of the main non-woven fabric 1b.

[0043] In some embodiments, it further includes: a control system for realizing the automatic insert production of split adult diapers by using a programmable controller.

[0044] 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 belong to the prior art and can be realized by those skilled in the art through programming, which is common 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, improving the intelligent level of the equipment and facilitating the monitoring and adjustment of the production process.

[0045] 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

[0046] A chip inserting method for an automatic chip inserting device of a split adult diaper, characterized by comprising the following steps: 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. 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, so that the chip inserting part 1d is opened, and through the multi-axis driving mechanism 8, the glue outlet head 71 is driven to be positioned inside the chip inserting part 1d. S3. After the glue outlet head 71 is positioned, the adhesive is supplied to the glue outlet head 71 through 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. S4. After the glue application is completed, the glue outlet head 71 is withdrawn, and through the robotic arm 9, the waist band 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 is cancelled downward through the cloth stretching and hot pressing mechanism 6 and pressed down to the waist band 1c. S5. After the robotic arm 9 withdraws, the chip inserting part 1d is hot pressed and cured at a pressure of 0.1 MPa and a temperature of 80 °C for 2 s again through the cloth stretching and hot pressing mechanism 6 to realize the automatic chip inserting production of the split adult diaper. Embodiment 2

[0047] This embodiment is basically the same as Embodiment 1, except that: in the step of S3, the axial translation speed is 30 mm / s. Embodiment 3

[0048] This embodiment is basically the same as Embodiment 1, except that: in the step of S3, the axial translation speed is 50 mm / s. Embodiment 4

[0049] This embodiment is basically the same as Embodiment 1, except that: in the step of S3, the rotational speed of the rotational motion is 100 rpm. Embodiment 5

[0050] This embodiment is basically the same as Embodiment 1, except that: in the step of S3, the rotational speed of the rotational motion is 140 rpm.

[0051] Comparative Example 1 This comparative example is basically the same as Embodiment 1, except that: the glue outlet head 71 has no rotational motion. The step of S3 is specifically: after the glue outlet head 71 is aligned, the adhesive is supplied to the glue outlet head 71 through the glue delivery head 72 at a pressure of 0.3 MPa, the glue exits from the glue outlet hole 73, and the glue outlet head 71 is driven by the multi-axis drive mechanism 8 to axially translate along the inner side of the insertion part 1d at a speed of 40 mm / s.

[0052] Comparative Example 2 This comparative example is basically the same as Embodiment 1, except that: in the step of S3, the axial translation speed is 20 mm / s.

[0053] Comparative Example 3 This comparative example is basically the same as Embodiment 1, except that: in the step of S3, the axial translation speed is 60 mm / s.

[0054] Comparative Example 4 This comparative example is basically the same as Embodiment 1, except that: in the step of S3, the rotational speed of the rotational motion is 90 rpm.

[0055] Comparative Example 5 This comparative example is basically the same as Embodiment 1, except that: in the step of S3, the rotational speed of the rotational motion is 150 rpm.

[0056] Performance detection: The split adult diapers prepared in Embodiments 1-5 and Comparative Examples 1-5 were tested for the bonding strength between the waistband piece 1c and the insertion part 1d of the main non-woven fabric 1b, and the results are shown in Table 1.

[0057] Adhesion Strength Test: Refer to GB / T 2792-2014 "Test Method for Peel Strength of Adhesive Tapes", and conduct parallel tests 3 times and take the average value.

[0058] Table 1: Performance Test Results

[0059] It can be seen from Table 1 that: By comparing Examples 1-5 with Comparative Example 1, it can be known that: during the gluing operation of the inserting part 1d by controlling the glue outlet head 71 with appropriate axial translation speed and rotational movement speed during the gluing process, the glue liquid uniformly covers the contact surface of the inserting part 1d through a spiral trajectory, forming a three-dimensional wrapping layer. The centrifugal force generated by rotation causes the glue liquid to diffuse outward from the glue outlet hole 73, penetrate into the gaps between non-woven fibers, and achieve continuous coverage of the glue layer through axial translation. Furthermore, 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) is adopted, and the glue liquid is 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 depends on surface adhesion, and the shear stress is concentrated in local areas, and finally the adhesion strength drops to 1.5 N / cm.

[0060] By comparing Examples 1-3 with Comparative Examples 2-3, it can be known that: in Example 2, a lower speed increases 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) will 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 is insufficient, affecting the continuity of the bonding interface. In Example 3 (50 mm / s), a higher speed can improve the efficiency, but when approaching Comparative Example 3 (60 mm / s), the coating time of the glue liquid is shortened, and the insufficient glue amount leads to a reduction in the fiber penetration depth, and the glue layer cannot form an effective anchoring structure, resulting in a significant reduction in the adhesion strength. Therefore, an appropriate axial translation speed balances the glue amount control and coating efficiency, enables the glue liquid to uniformly penetrate under the assistance of rotation, and achieves the best bonding effect.

[0061] From the comparison between Example 1 and Examples 4-5 and Comparative Examples 4-5, it can be seen that in Example 4, the centrifugal force was insufficient at a lower rotational speed, the diffusion range of the adhesive liquid was limited, and some fiber gaps were not filled, resulting in a reduced bonding area. In Comparative Example 4 (90 rpm), the rotational speed was further decreased, and the adhesive liquid could not even overcome the surface tension, forming intermittent adhesive lines. In Example 5, a higher rotational speed enhanced the centrifugal penetration effect. However, when approaching Comparative Example 5 (150 rpm), the adhesive liquid splashed due to excessive centrifugal force, and the adhesive amount was insufficient in some areas, resulting in uneven adhesive layer thickness. Therefore, an appropriate rotational speed enables the adhesive liquid to form a continuous spiral adhesive layer under the synergistic action of centrifugal force and viscosity recovery characteristics, ensuring both the penetration depth and avoiding splashing, thereby maintaining the adhesion strength stable at 2.8 N / cm.

[0062] 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 can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. 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 encompassed by the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0063] 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 automatic inserting device for split adult diapers, characterized in that: include: A workbench, a material taking table for placing waist pieces arranged on both sides of the workbench, and a conveying guide rail installed on the workbench; The top of the conveying guide rail is slidably connected with a conveying platform for transferring the main non-woven fabric to the insert area, and the top of the conveying platform is equipped with a clamping mechanism for clamping the main non-woven fabric; the side of the conveying guide rail is equipped with a cloth-supporting hot-pressing mechanism for respectively supporting the upper and lower cloths and hot-pressing and curing the insert area of ​​the main non-woven fabric; A docking block is provided on the side of the feeding platform, and a glue outlet head is rotatably connected to the side of the docking block, and a glue delivery head for external glue delivery equipment to supply adhesive is fixedly connected; the glue outlet head is connected to the glue delivery head through a flow channel on the inner side of the docking block, and a plurality of glue outlet holes are opened on the side of the glue outlet head; A multi-axis driving mechanism is installed on the top of the workbench to drive the glue dispensing head to align with the inserting position and realize axial translation and rotation movement at the same time; a mechanical arm is installed on the side of the workbench to transport and insert the waist piece to the inserting position.

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

3. The automatic inserting device for split adult diapers according to claim 1, characterized in that: The multi-axis driving mechanism comprises: a mounting block fixed on one side of the docking block, a first servo motor mounted on one side of the mounting block, and a driving synchronous pulley fixed on an output end of the first servo motor; a driven synchronous pulley is fixed on the side of the glue dispensing head, and a toothed belt is meshed between the driving synchronous pulley and the driven synchronous pulley; A translation frame is fixed on the top of the workbench, and a threaded screw is rotatably connected to the inner side of the translation frame. A second servo motor for driving the threaded screw to rotate is installed on one side of the translation frame; a T-frame is threadedly connected to the side of the threaded screw, and the bottom of the T-frame is slidably connected to the slide rail fixed on the top of the translation frame through a fixed slider; a dual-axis translation component for driving the glue dispensing head to adjust the alignment posture is installed on the side of the T-frame.

4. The automatic inserting device for split adult diapers according to claim 3, characterized in that: The dual-axis translation assembly includes: a feed cylinder fixed on the side of the T-frame, a support plate fixed on the output end of the feed cylinder, and a positioning block fixed on the top of the support plate near one end; one side of the support plate is slidably connected to the slide rail fixed on the side of the T-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 surface of the first guide rod is sleeved with the inner side of the alignment block.

5. The automatic inserting device for split adult diapers according to claim 1, characterized in that: The clamping mechanism includes: a plurality of rotating rods rotatably connected to the top of the feeding platform, connecting rods fixed to the sides of the rotating rods, and flip cylinders fixed to both ends of the rotating rods; One side of the turning cylinder is fixed to one side of the feeding platform, a plurality of pressure strips are fixed to one side of the connecting rod, and a plurality of positioning strips are fixed to the top of the feeding platform.

6. The automatic inserting device for split adult diapers according to claim 1, characterized in that: The cloth-supporting hot-pressing mechanism comprises: a plurality of support rods fixed to the side of the feeding platform, a second electric push rod fixed to the side of the support rod, and a synchronous translation assembly installed on the side of the feeding platform for driving the plurality of support rods to synchronously move toward the side of the main non-woven fabric; a first connecting block and a second connecting block are fixed to the side of the output shaft of the second electric push rod in sequence, 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 side of the first connecting block and the second electric push rod fixing seat; A connecting strip is fixed to the bottom of the first connecting block and the second connecting block, and a plurality of negative pressure suction cups for achieving negative pressure adsorption are fixed to the connecting strip near the bottom of the first connecting block; a hot pressing plate is fixed to the bottom of the connecting strip near the bottom of the second connecting block, and a heating layer is arranged at the bottom of the hot pressing plate.

7. The automatic inserting device for split adult diapers according to claim 6, characterized in that: The synchronous translation assembly includes: a plurality of fixed frames fixed to the side of the feeding platform, a moving rod and a plurality of limit 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; The two ends of the movable rod are rotatably connected to the inner side of the fixed frame, and the side surfaces of the movable rod are provided with threads in opposite directions and are connected to the inner side threads of several support rods; the two ends of the limit rod are fixed to the inner side of the fixed frame, and the side surfaces of several limit rods are sleeved with the inner sides of the support rods.

8. The automatic inserting device for split adult diapers according to claim 1, characterized in that: Also includes: A control system for realizing automated insert production of split-type adult diapers using a programmable controller.

9. A method for inserting a split-type adult diaper according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. The main non-woven fabric compounded with the water-absorbing core is clamped and positioned on the top of the feeding table through a clamping mechanism, and is transported to the inserting area of ​​the workbench along the conveying guide rail; S2, through the cloth-stretching and hot-pressing mechanism, the inserting part of the main non-woven fabric is stretched up and down respectively, so that the inserting part is opened, and the multi-axis driving mechanism is used to drive the glue head to align the inner side of the inserting part; S3, after the glue discharging head is aligned, the adhesive is supplied to the glue discharging head through the glue feeding head, the glue is discharged from the glue discharging hole, and the glue discharging head is driven to perform axial translation and rotation along the inner side of the insert part through the multi-axis driving mechanism; S4, after the glue coating is completed, the glue discharging head is withdrawn, and the waist piece placed on the material taking table is transferred to the inserting piece position through the mechanical arm, and the piece is inserted to the inserting piece position, and the cloth is removed downward by the cloth support hot pressing mechanism and pressed down to the waist piece; S5. After the robot arm withdraws, the cloth-supporting and hot-pressing mechanism is used again to heat-press and solidify the inserts, thereby realizing the automated insert production of the split-type adult diapers.

10. The inserting method of the automatic inserting device for split-type adult diapers according to claim 9, characterized in that: In the step 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 speed of the rotational motion is 100-140 rpm; in the step 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.

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