A new type of diaper production equipment

Abstract

The present invention relates to the field of disposable hygiene product production equipment, and in particular to a new type of diaper production equipment suitable for the production of adult T-shaped diapers and energy-saving and environmentally friendly, including an ear sticker non-woven fabric unwinding device, a first ear sticker adding device, a second ear sticker adding device, a raw material cutting piece slitting device, a transfer device, a first guardrail non-woven fabric unwinding device, a second guardrail non-woven fabric unwinding device, a first folding device, a second folding device, a first anti-leakage elastic adding device, a second anti-leakage elastic adding device, a first thigh elastic adding device, a second thigh elastic adding device, a surface layer non-woven fabric unwinding device, a lower toilet paper unwinding device, a forming die wheel, an upper toilet paper unwinding device, an absorbent core slitting device, a PE film unwinding device, a pressing roller device, a slitting device, and an output device.

Description

Technical Field

[0001] The present invention relates to the field of disposable hygiene product production equipment, and particularly to a new type of diaper production equipment. Background Art

[0002] Reference Figure 1 As shown, existing diapers include adult diapers and baby diapers, and their structure is generally as follows: from top to bottom, they successively include a liquid-permeable surface layer 1', an absorbent core layer 2', and a liquid-impermeable bottom layer 3' arranged in a laminated manner. The absorbent core layer 2' is composed of a non-woven fabric wrapping an absorbent core body, and this absorbent core layer 2' is used to absorb and hold human excretions. The liquid-permeable surface layer 1' is composed of a hydrophilic non-woven fabric and hydrophobic non-woven fabrics respectively fixed on both lateral sides of the hydrophilic non-woven fabric, and is used to provide a comfortable and dry feeling when contacting the body, and at the same time allows liquids to freely pass through and enter the lower absorbent core layer 2'. The liquid-impermeable bottom layer 3' includes a PE film 31' and a hydrophobic non-woven fabric 32' connected in a composite manner, and it is used to hold the absorbed liquid in the absorbent core layer 2', thereby preventing the absorbed liquid from soiling the wearer's pants.

[0003] Reference Figure 2 As shown, the preparation of existing diapers is as follows: a. Prepare the liquid-permeable surface layer;

[0004] b. Continuously form a long strip-shaped absorbent core through a forming die wheel, wrap the absorbent core with a hydrophilic non-woven fabric, and then cut the absorbent core into mutually separated block-shaped absorbent core layers 2';

[0005] c. Unwind and convey the PE film 31' and the hydrophobic non-woven fabric 32' respectively, and then spray glue and composite them to form the liquid-impermeable bottom layer 3';

[0006] d. Transfer the absorbent core layer 2' to the upper surface of the liquid-impermeable bottom layer 3' and composite them. The absorbent core layers 2' are arranged at intervals along the conveying direction of the liquid-impermeable bottom layer 3', and then composite the liquid-permeable surface layer 1';

[0007] e. Cut out leg openings 4' on both width sides of the product in step d, and then cut it into individual diapers.

[0008] Due to the composite of the PE film 31' and the hydrophobic non-woven fabric 32', generally two materials of the same width are selected, so that when cutting the leg openings 4', more materials are cut off. Especially for adult diapers, the width dimension of the waist region is usually above 80 cm, while the width dimension in the crotch region is about 30 cm, and the cut-off materials cannot be reused, resulting in a large amount of material waste. Moreover, the composite of the PE film 31' and the hydrophobic non-woven fabric 32' makes the thickness of the waist region larger, with poor air permeability and reduced comfort in use.

[0009] In view of the above problems, a new type of diaper structure is proposed. On June 9, 2022, the applicant applied for a patent with the application number 202221430382.8 and the patent title "An Adult T-shaped Diaper", which discloses in detail a diaper core body and waist sheets arranged at both ends of the diaper core body. Two groups of symmetric waist sheets form raw material cutting sheets, and two or more groups of raw material cutting sheets are arranged in the same direction to form a raw material strip. By making full use of the raw material strip to cut into waist sheets with the same structure, no waste is generated during the cutting process, which is beneficial to environmental protection, and making the most of the waist sheets is beneficial to reducing costs.

[0010] However, it is found in the actual production process that in the preparation of traditional diapers, after cutting the leg circumference, it needs to be adsorbed and transported by an adsorption device, then slit by a slitting device, and then the waist of the diaper is folded. Since the cutting of the leg circumference material is in the subsequent steps of the production line, the length of the adsorption device for adsorbing and transporting the waist area does not need to be very long. However, for the new diaper structure proposed by the applicant, the lamination process of the waist sheet is before the liquid-permeable surface layer lamination process. Due to the high speed of the diaper production line, without using an adsorption device to adsorb and transport the waist sheet, the waist sheet will flutter, which not only affects the material transportation, but also affects the accuracy of subsequent ear tab lamination and folding packaging, seriously affecting the product quality. But using an adsorption device to adsorb and transport the waist sheet, due to the larger width dimension of the waist area of the formed product after laminating the waist sheet, the width specification size of the adsorption device needs to be enlarged by at least one time, resulting in a sharp increase in the cost of the production line and an increase in the energy consumption during the operation of the production line. Summary of the Invention

[0011] Therefore, in view of the above problems, the present invention provides a new type of diaper production equipment suitable for the production of adult T-shaped diapers and energy-saving and environmental protection.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] A new type of diaper production equipment, including an ear tab non-woven fabric unwinding device, a first ear tab adding device, a second ear tab adding device, a raw material cutting sheet slitting device, a transfer device, a first guardrail non-woven fabric unwinding device, a second guardrail non-woven fabric unwinding device, a first folding device, a second folding device, a first anti-leakage elastic adding device, a second anti-leakage elastic adding device, a first leg circumference elastic adding device, a second leg circumference elastic adding device, a surface layer non-woven fabric unwinding device, a lower toilet paper unwinding device, a forming die wheel, an upper toilet paper unwinding device, an absorbent core slitting device, a PE film unwinding device, a pressing roller device, a slitting device and an output device, and the output device is a packaging device;

[0014] The first ear patch adding device and the second ear patch adding device are respectively arranged at the output end of the ear patch non-woven fabric unwinding device. The raw material cutting sheet slitting device is arranged at the output end of the first ear patch adding device and the second ear patch adding device. The transfer device is arranged at the output end of the raw material cutting sheet slitting device, the first guardrail non-woven fabric unwinding device, and the second guardrail non-woven fabric unwinding device;

[0015] The first folding device and the second folding device are respectively arranged at the output end of the transfer device. The first anti-leakage elastic band adding device is arranged at the output end of the first folding device. The first leg circumference elastic band adding device is arranged at the output end of the first anti-leakage elastic band adding device. The second anti-leakage elastic band adding device is arranged at the output end of the second folding device. The second leg circumference elastic band adding device is arranged at the output end of the second anti-leakage elastic band adding device. The surface layer non-woven fabric unwinding device is arranged at the output end of the first leg circumference elastic band adding device and the second leg circumference elastic band adding device;

[0016] The forming die wheel is arranged at the output end of the lower toilet paper unwinding device. The upper toilet paper unwinding device is arranged at the output end of the forming die wheel. The absorbent core slitting device is arranged at the output end of the upper toilet paper unwinding device. The PE film unwinding device is arranged at the output end of the absorbent core slitting device. The surface layer non-woven fabric unwinding device is arranged at the output end of the PE film unwinding device. The pressing roller device is arranged at the output end of the surface layer non-woven fabric unwinding device. The slitting device is arranged at the output end of the pressing roller device. The output device is arranged at the output end of the slitting device.

[0017] Further, the forming die wheel includes a first forming die wheel and a second forming die wheel. The second forming die wheel is arranged at the output end of the first forming die wheel.

[0018] Further, both the first folding device and the second folding device include a first adsorption conveying device, a second adsorption conveying device, a third adsorption conveying device, and a folding assembly. The first adsorption conveying device has a first adsorption conveying surface, and the first adsorption conveying surface is located on the upper surface of the first adsorption conveying device. The second adsorption conveying device has a second adsorption conveying surface, and the second adsorption conveying surface is located on the lower surface of the second adsorption conveying device. The third adsorption conveying device has a third adsorption conveying surface, and the third adsorption conveying surface is located on the upper surface of the third adsorption conveying device. The third adsorption conveying device is arranged at the output end of the first adsorption conveying device, and the first adsorption conveying surface and the third adsorption conveying surface are located on the same horizontal plane. The second adsorption conveying device is arranged on the lateral side of the first adsorption conveying device and the third adsorption conveying device, and the second adsorption conveying surface is higher than the first adsorption conveying surface. The folding assembly is arranged between the first adsorption conveying surface, the third adsorption conveying surface, and the second adsorption conveying surface.

[0019] Further, the folding assembly includes a first folding rod, a second folding rod, a folding plate that cooperate with each other, and two adjustment assemblies for respectively adjusting the first folding rod and the second folding rod.

[0020] Further, the first folding rod includes a first folding portion, a second folding portion, and a third folding portion that are integrally connected. The second folding portion is perpendicular to the first folding portion, and the third folding portion is perpendicular to the second folding portion, such that the first folding portion and the third folding portion are parallel to each other; the second folding rod includes a fourth folding portion, a fifth folding portion, and a sixth folding portion that are integrally connected. The fifth folding portion is perpendicular to the fourth folding portion, and the sixth folding portion is perpendicular to the fifth folding portion, such that the fourth folding portion and the sixth folding portion are parallel to each other; the fourth folding portion is disposed above the first folding portion, and the orthographic projection of the fourth folding portion intersects with the orthographic projection of the first folding portion. Both the first folding portion and the fourth folding portion are inclined outwardly horizontally, and the inclination angle of the first folding portion is greater than the inclination angle of the fourth folding portion.

[0021] Further, each adjustment assembly includes an adjustment screw, an adjustment seat threadedly connected to the adjustment screw, and a connecting rod fixed to the adjustment seat. The connecting rod is perpendicularly disposed and connected to the first folding portion or the fourth folding portion.

[0022] Further, the first adsorption and conveying device, the second adsorption and conveying device, and the third adsorption and conveying device each include a driving roller, a driven roller, a guide roller, a conveying belt, and an adsorption box. The conveying belt is wound around the driving roller, the driven roller, and the guide roller. The conveying belt has a plurality of adsorption holes. The adsorption box is disposed below the conveying belt. An opening is provided on the upper surface or the lower surface of the adsorption box, and the opening communicates with the adsorption holes.

[0023] By adopting the foregoing technical solution, the beneficial effects of the present invention are as follows: The novel diaper production equipment can realize the preparation of the novel diaper body. The production line has a simple structure, occupies a small space, has low production costs, and is energy-saving and environmentally friendly. Specifically, by setting the width dimension of the waist sheet to extend the waist region of the diaper body, the width dimensions of the liquid-permeable surface layer and the liquid-impermeable bottom layer in the waist region of the diaper body are reduced, thereby reducing the material usage. Moreover, the step of cutting the leg circumference in the traditional structure is eliminated, further reducing the production cost. When in use, the two sides of the waist are wrapped by the waist sticker non-woven fabric with a single-layer structure, which can improve the comfort of use. At the same time, by separately unwinding the left side guard non-woven fabric and the right side guard non-woven fabric, and then respectively compounding the raw material cutting pieces, the width dimension of the material transportation can be reduced, thereby reducing the width dimension of the adsorption and transportation device, reducing the equipment input cost, and also reducing the energy consumption of the equipment operation. After folding the raw material cutting pieces on the left side guard non-woven fabric and the right side guard non-woven fabric respectively and then compounding them with the surface layer non-woven fabric, the width dimension of the material transportation is also reduced. After separately compounding them with the absorbent core layer and the PE film, compared with the case where the raw material cutting pieces are preferentially compounded with the PE film, on the one hand, the width dimension of the material transportation can be reduced, on the other hand, the transportation distance of the material can be reduced, facilitating the compounding of the materials and the precision control of the preparation process, and reducing the energy consumption of the equipment operation, achieving the effect of energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a top view structural schematic diagram of an existing diaper;

[0025] Figure 2 is a process flow diagram of the forming process of an existing diaper;

[0026] Figure 3 is a process flow diagram of the forming process of the novel diaper in the embodiment of the present invention;

[0027] Figure 4 is a structural schematic diagram of another absorbent body in a disassembled state in the novel diaper in the embodiment of the present invention;

[0028] Figure 5 is a structural schematic diagram of the embodiment of the present invention;

[0029] Figure 6 is a front view structural schematic diagram of the first folding device and the second folding device in the embodiment of the present invention;

[0030] Figure 7 is a top view structural schematic diagram of the first folding device and the second folding device in the embodiment of the present invention;

[0031] Figure 8 is a structural schematic diagram of the folding assembly in the embodiment of the present invention;

[0032] Figure 9 is a schematic cross-sectional structure diagram of the applying device in the embodiment of the present invention;

[0033] Figure 10 is a schematic cross-sectional structure diagram of another view of the first rotating shaft, the first roller body and the sleeve in the embodiment of the present invention;

[0034] Figure 11 is a schematic front view structure diagram of the welding device in the embodiment of the present invention;

[0035] Figure 12 is a schematic cross-sectional structure diagram of the welding roller in the embodiment of the present invention. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0037] The embodiment of the present invention is as follows:

[0038] Reference Figure 3 , a new type of diaper forming process, comprising the following steps:

[0039] 1) Unroll the processed ear patch non-woven fabric 1 in a roll shape. Define the direction along which the ear patch non-woven fabric 1 is unrolled and conveyed as the longitudinal direction, and the direction along the width of the ear patch non-woven fabric 1 as the transverse direction. Add the first ear patch 2 and the second ear patch 3 respectively along the transverse sides of the ear patch non-woven fabric 1. The first ear patch 2 and the second ear patch 3 are both distributed at intervals, and the first ear patch 2 and the second ear patch 3 are staggered along the longitudinal direction;

[0040] 2) Cut the ear patch non-woven fabric 1 to form individual separated raw material cutting pieces 4. Define that two consecutive raw material cutting pieces 4 form a waist piece unit. The two raw material cutting pieces 4 located within the waist piece unit are rotationally symmetrically distributed. The first ear patch 2 and the second ear patch 3 are respectively disposed on the two raw material cutting pieces 4 within the waist piece unit;

[0041] 3) Unroll the processed left side guard non-woven fabric 5 and right side guard non-woven fabric 6 in a roll shape respectively, and add leg elastic 7 and anti-leakage elastic 8 respectively along the transverse sides of the left side guard non-woven fabric 5 and the right side guard non-woven fabric 6 to form a left guard piece 9 and a right guard piece 10. The left guard piece 9 and the right guard piece 10 are axially symmetrically distributed;

[0042] 4) Fix the two raw material cutting pieces 4 in the waist piece unit in step 2 respectively on the transverse outer edges of the left guard piece 9 and the right guard piece 10, and the two raw material cutting pieces 4 in the waist piece unit are axially symmetrically distributed;

[0043] 5) Folding the raw material cut sheet 4 on the left protective sheet 9 and the right protective sheet 10 upward and inward once, so that a folding area is formed on the raw material cut sheet 4, and the folding line is distributed in the transverse middle of the raw material cut sheet 4;

[0044] 6) folding the folding areas of the raw material cut pieces 4 on the left and right protective pieces 9 and 10 upward and inward for a second time, respectively, with the folding lines being distributed in the transverse middle of the folding areas;

[0045] 7) unwinding the processed rolled surface nonwoven fabric 11, and distributing and fixing the left protective sheet 9 and the right protective sheet 10 in step 6 on the upper surface of the surface nonwoven fabric 11 and on both lateral sides of the surface nonwoven fabric 11;

[0046] 8) unwinding the processed lower toilet paper 12 in roll form;

[0047] 9) crushing the fluff pulp by a molding die wheel and mixing it with a polymer water-absorbing resin material to form an absorbent body 13 with a block structure, and compounding the absorbent body 13 on the upper surface of the lower toilet paper 12;

[0048] 10) unwinding the processed upper toilet paper 14 in roll form and laminating it on the upper surface of the product in step 9;

[0049] 11) cutting the product of step 10 to form a block-shaped absorbent core layer 15;

[0050] 12) unwinding the processed rolled PE film 16, adding the absorbent core layer 15 on the upper surface of the PE film 16 at intervals along the longitudinal direction, and then adding the elastic sheet 17 on the upper surface of the PE film 16, wherein the elastic sheet 17 is distributed on one longitudinal side of the absorbent core layer 15;

[0051] 13) Compounding the product of step 7 on the upper surface of the product of step 12, and the absorbent core layer 15 is distributed between two adjacent raw material cut sheets 4 in the longitudinal direction;

[0052] 14) cutting the product of step 13 along the longitudinal center axis of the raw material cutting piece 4 to form a single diaper body, and cutting the raw material cutting piece 4 to form a waist piece;

[0053] 15) The waist piece of the diaper body is folded upward and inward three times along the connection between the raw material cut piece and the left and right protective pieces 9 and 10, and then the diaper body is folded in the longitudinal direction and output.

[0054] The forming process of this new type of diaper reduces the width dimensions of the liquid-permeable surface layer and the liquid-impermeable bottom layer in the waist region of the diaper body by setting the waist sheet to extend the width dimension of the waist region of the diaper body, thereby reducing the material usage. Moreover, the step of cutting the leg circumference in the traditional structure is omitted, thus reducing the production cost. When in use, the two sides of the waist are wrapped by the waist sticker non-woven fabric with a single-layer structure, which can improve the comfort of use. At the same time, by separately unrolling the left side guard non-woven fabric 5 and the right side guard non-woven fabric 6, and then separately compounding the raw material cutting pieces 4, the width dimension of the material transportation can be reduced, thereby reducing the width dimension of the adsorption and transportation device, reducing the equipment input cost, and also reducing the energy consumption of the equipment operation. After folding the raw material cutting pieces 4 on the left side guard non-woven fabric 5 and the right side guard non-woven fabric 6 respectively and then compounding them with the surface layer non-woven fabric, the width dimension of the material transportation is also reduced. Then, they are separately compounded with the absorbent core layer 15 and the PE film 16. Compared with the way that the raw material cutting piece is preferentially compounded with the PE film 16, on the one hand, the width dimension of the material transportation can be reduced, on the other hand, the transportation distance of the material can be reduced, which is convenient for material compounding and the precision control of the preparation process, and also reduces the energy consumption of the equipment operation, achieving the effect of energy conservation and environmental protection.

[0055] Moreover, the waist sheet is clamped between the left side guard piece 9 or the right side guard piece 10 and the PE film 16, thereby improving the connection strength.

[0056] In this embodiment, compared with the traditional diaper structure, the design of the bottom non-woven fabric is omitted. Of course, in the actual production process, according to the needs of customers, the bottom non-woven fabric is compounded on the lower surface of the PE film 16, and the width dimension of the bottom non-woven fabric is equal to the width dimension of the PE film 16, thereby being able to protect the PE film 16.

[0057] At the same time, the elastic sheet 17 includes an upper layer non-woven fabric 171, a lower layer non-woven fabric 172, and six elastic rubber bands 173 with a stretching ratio of 1.4 times compounded between the upper layer non-woven fabric 171 and the lower layer non-woven fabric 172. Each of the elastic rubber bands 173 is distributed horizontally. The elastic sheet 17 is distributed between the first ear sticker 2 and the second ear sticker 3. The ratio of the horizontal width dimension of the elastic sheet 17 to the horizontal width dimension of the absorbent core layer 15 is 1:0.7 - 0.95, preferably 1:0.85. With this design, the elastic effect of the elastic sheet 17 can be improved, enabling the elastic sheet 17 to maintain a good elastic effect when its structural size is relatively small, improving the convenience of use. Moreover, the setting of the elastic sheet can be separated from the production line of the diaper body, realizing separate preparation, simplifying the structure of the production line, and reducing the input cost.

[0058] Moreover, the first ear tab 2, the second ear tab 3, and the elastic sheet 17 are distributed in the longitudinal central axis region of the waist sheet, so that it can fit well to the user's waist during use, prevent the diaper body from falling off during activities, and improve the use comfort.

[0059] Further, in the above step 1, the ear tab non-woven fabric 1 is punched between the unwinding of the ear tab non-woven fabric 1 and the addition of the first ear tab 2 and the second ear tab 3, so as to improve the air permeability of the formed waist sheet, and further improve the use comfort.

[0060] In this embodiment, referring to Figure 4 As shown, in the above step 9, the number of the forming die wheels is two, and they are arranged in sequence along the production line, so that the number of absorbent bodies formed by the forming die wheels is two, namely the first absorbent body 18 and the second absorbent body 19. The first absorbent body 18 and the second absorbent body layer 19 are stacked and distributed, thereby increasing the urine absorption capacity. Moreover, the first absorbent body 18 and the second absorbent body 19 are separated from each other and stacked and distributed, preventing caking after absorbing urine. Further, a flexible mesh layer 21 is applied between the first absorbent body 18 and the second absorbent body 19. The width dimension of the flexible mesh layer 21 is smaller than the width dimensions of the first absorbent body 18 and the second absorbent body 19. Thus, the first absorbent body 18 and the second absorbent body 19 are separated and fixed, and the structural stability of the absorbent core and the problem of preventing caking can be improved without affecting the downward infiltration of urine.

[0061] In actual use, the usage scenario of adult diapers is often during the pathological period of the user. At this time, the water intake of the user is often less, so that the urea content in the discharged urine is relatively high and the odor is strong. Therefore, essential oil bursting beads are added during the preparation process to remove the odor. Specifically, the essential oil bursting beads are added to the grid holes 22 of the flexible mesh layer 21 through the application device 20. The flexible mesh layer 21 has grid holes 22 distributed in a matrix. The essential oil bursting beads are clamped in the grid holes 22, and the essential oil bursting beads are fixed by the elastic force thereof.

[0062] Referring to Figure 9 And Figure 10As shown, the application device 20 includes a first driving assembly 201, a second driving assembly 202, a first rotating shaft 203, a first roller 204, a sleeve 205, and a gas distribution disc 206. The first rotating shaft 203 is rotatably arranged on the frame. The first driving assembly 201 is connected to the first rotating shaft 203 to drive the first rotating shaft 203 to rotate. The first roller 204 is fixedly arranged on the first rotating shaft 203. At least two material storage grooves 207, preferably six, are arranged on the circumferential outer surface of the first roller 204. An air permeable hole corresponding to the material storage groove 207 is arranged on one end surface of the first roller 204. An air passage 208 connecting the air permeable hole and the material storage groove 207 is arranged on the first roller 204. The gas distribution disc 206 is arranged on the first rotating shaft 203 and communicated with each air permeable hole. The sleeve 205 is rotatably sleeved on the first roller 204. An extension part 209 extends outward from one end of the sleeve 205 away from the gas distribution disc 206. The extension part 209 is sleeved on the first rotating shaft 203. The second driving assembly 202 is connected to the extension part 209 to drive the extension part 209 and the sleeve 205 to rotate. Discharge ports 215 are evenly arranged on the circumferential outer surface of the sleeve 205. A discharge pipe 211 is arranged at each discharge port 215. The free end of the discharge pipe 211 is in a conical structure. A baffle assembly is arranged on the circumferential inner surface of the sleeve 205. Each baffle assembly includes two baffles 212. The two baffles 212 are distributed between two adjacent discharge ports 215. The two baffles 212, the first roller 204, and the sleeve 205 form a negative pressure chamber 213. A feed port 214 communicated with one of the negative pressure chambers 213 is arranged on the extension part 209.

[0063] The first driving assembly 201 and the second driving assembly 202 drive the first rotating shaft 203 and the sleeve 205 to rotate respectively. At the same time, an external air extraction pump is communicated with the negative pressure chamber 213 through the gas distribution disc 206, so that the essential oil bursting beads entering from the feed port 214 are adsorbed in the material storage groove 207, and the essential oil bursting beads on the first roller 204 are driven by the rotation of the first rotating shaft 203 to rotate to the lower side. The negative pressure adsorption force of the negative pressure chamber 213 on the lower side disappears, and the essential oil bursting beads fall by gravity. At this time, the sleeve 205 rotates synchronously. The discharge pipe 211 on the sleeve is inserted into the mesh hole 22 of the flexible mesh layer 21 during the rotation process and expands the mesh hole 22. The falling essential oil bursting beads enter the mesh hole 22 from the discharge pipe 211. After the discharge pipe 211 is separated from the flexible mesh layer 21, the flexible mesh layer 21 clamps and fixes the essential oil bursting beads, thereby realizing the implantation of the essential oil bursting beads. This structure is simple and highly convenient to use, and can be well applied to the preparation of this new type of diaper.

[0064] Further, in the above step 6, after the secondary folding, the welding device 30 is used to weld and fix along the longitudinal middle part of the raw material cutting piece 4 to form a welding area. The welding area has welding points distributed in a matrix, so that the longitudinal middle part of the folded raw material cutting piece 4 is fixed to the left guard piece 9 or the right guard piece 10, preventing the raw material cutting piece 4 from scattering, which is beneficial to the processing accuracy, improves the conveying convenience of the material, and at the same time improves the packaging convenience. Moreover, through the setting of the welding points, it is convenient to control the welding force of the welding area and is convenient for the user to tear when in use.

[0065] Reference Figure 11 With Figure 12 As shown, specifically, the welding device 30 includes a welding frame 301, a welding roller 302, a bottom roller 303, a first bearing seat 304, a second bearing seat 305, two ultrasonic components 306 and a pressing force adjusting component 307. The axial two ends of the bottom roller 303 are arranged on the welding frame 301 through the first bearing seat 304. The axial two ends of the welding roller 302 are arranged on the welding frame 301 through the second bearing seat 305, and the welding roller 302 is distributed above the bottom roller 303. The pressing force adjusting component 307 is arranged at the upper end of the welding frame 301 and is distributed at the axial two ends of the welding roller 302 for adjusting the pressing force between the welding roller 302 and the bottom roller 303. The welding roller 302 includes a second rotating shaft 308, a second roller body 309 sleeved on the second rotating shaft 308, and a third roller body 310 sleeved on the second roller body 309. A row of first through holes 311 are arranged around the second roller body 309. A sleeve 312 made of metal material is penetrated through each of the first through holes 311. A support block 313 is arranged at the inner end of the sleeve 312. Each of the ultrasonic components 306 is arranged between the support block and the second rotating shaft 308. A welding rod 314 is penetrated through the sleeve 312. A second through hole 315 corresponding to the first through hole 311 is arranged on the third roller body 310. A heat insulation sleeve 316 is arranged at the second through hole 315. The outer end of the welding rod 314 extends outward through the heat insulation sleeve 316. A convex edge 317 is arranged in the middle of the welding rod 314. A pressing spring 318 is sleeved on the sleeve 312. The two ends of the pressing spring 318 respectively abut against the convex edge 317 and the second roller body 309.

[0066] During use, the ultrasonic component 306 heats the support block 313, and the support block 313 conducts heat to the welding rod 314 through the sleeve 312 to weld the material. At the same time, when the welding roller 302 and the bottom roller 303 are pressed together, the welding rod 314 is pushed to squeeze the compression spring 318, thereby controlling the pressing force of the welding rod 314, and further controlling the welding strength of the welding point, avoiding excessive welding at the welding point and damaging the stability of the material, which is beneficial for tearing during use. And through the pressing force adjustment component 307, double adjustment is realized, so that the adjustment range of the pressing force of the welding rod 314 is wide, and the pressing force is stable, improving the welding stability and welding quality.

[0067] Reference Figure 5 As shown, a new type of disposable diaper production equipment includes an ear tape non-woven fabric unwinding device 40, a first ear tape adding device 50, a second ear tape adding device 60, a raw material cutting piece slitting device 70, a transfer device 80, a first waist guard non-woven fabric unwinding device 90, a second waist guard non-woven fabric unwinding device 100, a first folding device 110, a second folding device 120, a first anti-side leakage elastic adding device 130, a second anti-side leakage elastic adding device 140, a first leg cuff elastic adding device 150, a second leg cuff elastic adding device 160, a surface layer non-woven fabric unwinding device 170, a lower toilet paper unwinding device 180, a forming die wheel 190, an upper toilet paper unwinding device 200, an absorbent core slitting device 210, a PE film unwinding device 220, a pressing roller device 230, a slitting device 240, and an output device 250, and the output device 250 is a packaging device;

[0068] The first ear tape adding device 50 and the second ear tape adding device 60 are respectively arranged at the output end of the ear tape non-woven fabric unwinding device 40, the raw material cutting piece slitting device 70 is arranged at the output end of the first ear tape adding device 50 and the second ear tape adding device 60, and the transfer device 80 is arranged at the output end of the raw material cutting piece slitting device 70, the first waist guard non-woven fabric unwinding device 90, and the second waist guard non-woven fabric unwinding device 100;

[0069] The first folding device 110 and the second folding device 120 are respectively arranged at the output end of the transfer device 80, the first anti-side leakage elastic adding device 130 is arranged at the output end of the first folding device 110, the first leg cuff elastic adding device 150 is arranged at the output end of the first anti-side leakage elastic adding device 130, the second anti-side leakage elastic adding device 140 is arranged at the output end of the second folding device 120, the second leg cuff elastic adding device 160 is arranged at the output end of the second anti-side leakage elastic adding device 140, and the surface layer non-woven fabric unwinding device 170 is arranged at the output end of the first leg cuff elastic adding device 150 and the second leg cuff elastic adding device 160;

[0070] The forming die wheel 190 is arranged at the output end of the lower toilet paper unwinding device 180, the upper toilet paper unwinding device 200 is arranged at the output end of the forming die wheel 190, the absorbent core cutting device 210 is arranged at the output end of the upper toilet paper unwinding device 200, the PE film unwinding device 220 is arranged at the output end of the absorbent core cutting device 210, the surface layer non-woven fabric unwinding device 170 is arranged at the output end of the PE film unwinding device 220, the pressing roller device 230 is arranged at the output end of the surface layer non-woven fabric unwinding device 170, the cutting device 240 is arranged at the output end of the pressing roller device 230, and the output device 250 is arranged at the output end of the cutting device 240.

[0071] The structure of the above-mentioned transfer device 80 is disclosed in the patent application with the patent application number 202221159707.3 and the patent title of "An ear patch transfer mechanism" applied by the applicant on May 16, 2022.

[0072] The specific structures of the above-mentioned ear patch non-woven fabric unwinding device 40, the first ear patch adding device 50, the second ear patch adding device 60, the raw material cutting piece cutting device 70, the first guardrail non-woven fabric unwinding device 90, the second guardrail non-woven fabric unwinding device 100, the first anti-side leakage rubber band adding device 130, the second anti-side leakage rubber band adding device 140, the first thigh circumference rubber band adding device 150, the second thigh circumference rubber band adding device 160, the surface layer non-woven fabric unwinding device 170, the lower toilet paper unwinding device 180, the forming die wheel 190, the upper toilet paper unwinding device 200, the absorbent core cutting device 210, the PE film unwinding device 220, the pressing roller device 230, the cutting device 240 and the output device 250 are all prior arts and will not be elaborated here.

[0073] The forming die wheel 190 includes a first forming die wheel 191 and a second forming die wheel 192, and the second forming die wheel 192 is arranged at the output end of the first forming die wheel 191, thereby realizing the preparation of a double-layer absorbent body.

[0074] With such a design, the preparation of a new type of diaper body can be realized, and the production line has a simple structure, occupies a small space, has a low production cost, and is energy-saving and environment-friendly.

[0075] Reference Figure 6 And Figure 7As shown, the first folding device 110 and the second folding device 120 both include a first adsorption and conveying device 101, a second adsorption and conveying device 102, a third adsorption and conveying device 103, and a folding assembly 104. The first adsorption and conveying device 101 has a first adsorption and conveying surface 105, and the first adsorption and conveying surface 105 is located on the upper surface of the first adsorption and conveying device 101. The second adsorption and conveying device 102 has a second adsorption and conveying surface 106, and the second adsorption and conveying surface 106 is located on the lower surface of the second adsorption and conveying device 102. The third adsorption and conveying device 103 has a third adsorption and conveying surface 107, and the third adsorption and conveying surface 107 is located on the upper surface of the third adsorption and conveying device 103. The third adsorption and conveying device 103 is arranged at the output end of the first adsorption and conveying device 101, and the first adsorption and conveying surface 105 and the third adsorption and conveying surface 107 are located on the same horizontal plane. The second adsorption and conveying device 102 is arranged on the lateral side of the first adsorption and conveying device 101 and the third adsorption and conveying device 103, and the second adsorption and conveying surface 106 is higher than the first adsorption and conveying surface 105. The folding assembly 104 is arranged between the first adsorption and conveying surface 105, the third adsorption and conveying surface 107, and the second adsorption and conveying surface 106.

[0076] During use, the inner end of the raw material cut sheet 4 is adsorbed and conveyed by the first adsorption and conveying device 101, and the outer end of the raw material cut sheet 4 is adsorbed and conveyed by the second adsorption and conveying device 102. Then, the raw material cut sheet 4 is output after being double-folded through the cooperation of the folding assembly 104 and the third adsorption and conveying device 103.

[0077] Specifically, the folding assembly 104 includes a first folding rod 410, a second folding rod 420, a folding plate 430 that cooperate with each other, and two adjustment assemblies 440 for respectively adjusting the first folding rod 410 and the second folding rod 420.

[0078] Reference Figure 8As shown in the figure, the first folding rod 410 includes a first folding part 411, a second folding part 412, and a third folding part 413 that are integrally connected. The second folding part 412 is perpendicularly arranged with respect to the first folding part 411, and the third folding part 413 is perpendicularly distributed with respect to the second folding part 412, such that the first folding part 411 and the third folding part 413 are parallelly distributed. The second folding rod 420 includes a fourth folding part 421, a fifth folding part 422, and a sixth folding part 423 that are integrally connected. The fifth folding part 422 is perpendicularly arranged with respect to the fourth folding part 421, and the sixth folding part 423 is perpendicularly arranged with respect to the fifth folding part 422, such that the fourth folding part 421 and the sixth folding part 423 are parallelly distributed. The fourth folding part 421 is distributed above the first folding part 411, and the orthographic projection of the fourth folding part 421 intersects with the orthographic projection of the first folding part 411. Both the first folding part 411 and the fourth folding part 421 are inclined outwardly horizontally, and the inclination angle of the first folding part 411 is greater than the inclination angle of the fourth folding part 421.

[0079] The raw material cut sheet 4 is clamped and guided through the cooperation of the first folding part 411, the fourth folding part 421, and the folding plate 430, and is adsorbed and fixed by the first adsorption conveying device 101 and the second adsorption conveying device 102, so that the raw material cut sheet 4 is folded once, and the raw material cut sheet 4 is lifted. Then, under the cooperation of the second folding part 412 and the fifth folding part 422, the once-folded raw material cut sheet 4 is squeezed and folded downward, and then adjusted through the third folding part 413 and the sixth folding part 423 to achieve secondary folding. This structure is simple, has low production costs, and has good use effects.

[0080] The adjustment assembly 440 includes an adjustment screw 441 rotatably provided on the frame, an adjustment seat 442 threadedly connected to the adjustment screw 441, and a connecting rod 443 fixedly provided on the adjustment seat 442. The connecting rod 443 is perpendicularly arranged and connected to the first folding part 411 or the fourth folding part 421. By rotating the adjustment screw 441, the movement of the adjustment seat 442 is driven, and then the first folding rod 410 or the second folding rod 420 is driven to move through the connecting rod 443 to achieve adjustment, so as to adapt to the folding of products of different specifications and sizes.

[0081] The first adsorption conveying device 101, the second adsorption conveying device 102, and the third adsorption conveying device 103 each include a driving roller 451, a driven roller 452, a guide roller 453, a conveying belt 454, and an adsorption box 455. The conveying belt 454 is wound around the driving roller 451, the driven roller 452, and the guide roller 453. The conveying belt 454 has a plurality of adsorption holes. The adsorption box 455 is provided below the conveying belt 454, and an opening is provided on the upper surface or the lower surface of the adsorption box 455, and the opening is communicated with the adsorption holes.

[0082] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in form and detail without departing from the spirit and scope of the present invention defined by the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A new type of diaper production equipment, characterized in that: It includes an ear patch non-woven fabric unwinding device, a first ear patch adding device, a second ear patch adding device, a raw material cutting piece slitting device, a transfer device, a first guardrail non-woven fabric unwinding device, a second guardrail non-woven fabric unwinding device, a first folding device, a second folding device, a first anti-side leakage rubber band adding device, a second anti-side leakage rubber band adding device, a first leg circumference rubber band adding device, a second leg circumference rubber band adding device, a surface layer non-woven fabric unwinding device, a lower toilet paper unwinding device, a forming die wheel, an upper toilet paper unwinding device, an absorbent core slitting device, a PE film unwinding device, a pressing roller device, a slitting device and an output device, and the output device is a packaging device; The first ear patch adding device and the second ear patch adding device are respectively arranged at the output end of the ear patch non-woven fabric unwinding device, the raw material cutting piece slitting device is arranged at the output end of the first ear patch adding device and the second ear patch adding device, and the transfer device is arranged at the output end of the raw material cutting piece slitting device, the first guardrail non-woven fabric unwinding device and the second guardrail non-woven fabric unwinding device; The first folding device and the second folding device are respectively arranged at the output end of the transfer device, the first anti-side leakage rubber band adding device is arranged at the output end of the first folding device, the first leg circumference rubber band adding device is arranged at the output end of the first anti-side leakage rubber band adding device, the second anti-side leakage rubber band adding device is arranged at the output end of the second folding device, the second leg circumference rubber band adding device is arranged at the output end of the second anti-side leakage rubber band adding device, and the surface layer non-woven fabric unwinding device is arranged at the output end of the first leg circumference rubber band adding device and the second leg circumference rubber band adding device; The forming die wheel is arranged at the output end of the lower toilet paper unwinding device, the upper toilet paper unwinding device is arranged at the output end of the forming die wheel, the absorbent core slitting device is arranged at the output end of the upper toilet paper unwinding device, the PE film unwinding device is arranged at the output end of the absorbent core slitting device, the surface layer non-woven fabric unwinding device is arranged at the output end of the PE film unwinding device, the pressing roller device is arranged at the output end of the surface layer non-woven fabric unwinding device, the slitting device is arranged at the output end of the pressing roller device, and the output device is arranged at the output end of the slitting device.

2. The new type of diaper production equipment according to claim 1, characterized in that: The forming die wheel includes a first forming die wheel and a second forming die wheel, and the second forming die wheel is arranged at the output end of the first forming die wheel.

3. The new type of diaper production equipment according to claim 1 or 2, characterized in that: The first folding device and the second folding device both include a first adsorption conveying device, a second adsorption conveying device, a third adsorption conveying device and a folding assembly. The first adsorption conveying device has a first adsorption conveying surface which is located on the upper surface of the first adsorption conveying device. The second adsorption conveying device has a second adsorption conveying surface which is located on the lower surface of the second adsorption conveying device. The third adsorption conveying device has a third adsorption conveying surface which is located on the upper surface of the third adsorption conveying device. The third adsorption conveying device is arranged at the output end of the first adsorption conveying device, and the first adsorption conveying surface and the third adsorption conveying surface are located on the same horizontal plane. The second adsorption conveying device is arranged on the lateral side of the first adsorption conveying device and the third adsorption conveying device, and the second adsorption conveying surface is higher than the first adsorption conveying surface. The folding assembly is arranged between the first adsorption conveying surface, the third adsorption conveying surface and the second adsorption conveying surface.

4. The new type of diaper production equipment according to claim 3, characterized in that: The folding assembly includes a first folding rod, a second folding rod, a folding plate which cooperate with each other, and two adjusting assemblies for respectively adjusting the first folding rod and the second folding rod.

5. The new type of diaper production equipment according to claim 4, characterized in that: The first folding rod includes a first folding portion, a second folding portion and a third folding portion which are integrally connected. The second folding portion is perpendicular to the first folding portion, and the third folding portion is perpendicular to the second folding portion, so that the first folding portion and the third folding portion are parallel to each other. The second folding rod includes a fourth folding portion, a fifth folding portion and a sixth folding portion which are integrally connected. The fifth folding portion is perpendicular to the fourth folding portion, and the sixth folding portion is perpendicular to the fifth folding portion, so that the fourth folding portion and the sixth folding portion are parallel to each other. The fourth folding portion is arranged above the first folding portion, and the orthographic projection of the fourth folding portion intersects with the orthographic projection of the first folding portion. Both the first folding portion and the fourth folding portion are inclined laterally outwards, and the inclination angle of the first folding portion is greater than the inclination angle of the fourth folding portion.

6. The new type of diaper production equipment according to claim 4, characterized in that: The adjusting assembly includes an adjusting screw, an adjusting seat threadedly connected to the adjusting screw, and a connecting rod fixed to the adjusting seat. The connecting rod is perpendicularly arranged and connected to the first folding portion or the fourth folding portion.

7. The new type of diaper production equipment according to claim 3, characterized in that: The first adsorption conveying device, the second adsorption conveying device and the third adsorption conveying device all include a driving roller, a driven roller, a guide roller, a conveying belt and an adsorption box. The conveying belt is wound around the driving roller, the driven roller and the guide roller. The conveying belt has a plurality of adsorption holes. The adsorption box is arranged below the conveying belt, and an opening is provided on the upper surface or the lower surface of the adsorption box. The opening is communicated with the adsorption holes.

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