Three-dimensional underwear processing system and processing method

Abstract

The present invention discloses a three-dimensional underwear processing system and processing method, belonging to the field of clothing processing. The present invention is aimed at underwear products with a rear waist larger than a front waist, and the processing method provided includes: (a), transmitting the trouser body material, die-cutting it to form underwear sheets, and adjacent underwear sheets are arranged in a staggered manner; (b), applying glue on the edge of the side edge of the rear waist, and the glue gun follows the movement during the gluing; (c), folding the front waist along the transverse fold line, so that the front waist is attached to the upper surface of the rear waist; (d), folding the two sides of the rear waist, so that it overlaps with the front waist part, and the side edges of the rear waist are bonded and sealed with the side edges of the front waist to form an overlapped part, so as to form an underwear product. The method and the corresponding system are suitable for the efficient and automated production and processing of underwear products.

Description

Technical Field

[0001] The invention relates to the technical field of garment processing, and more specifically to a disposable three-dimensional underwear processing system and a processing method. Background Art

[0002] For disposable underwear products, woven fabrics can be used for sealing processing. Such underwear requires workers to operate machines individually for processing, and the production efficiency is extremely low.

[0003] Some disposable underwear products are made of non-woven materials and processed using automatic molding technology. This processing method generally requires that the front waist and back waist of the underwear are of equal width. After folding in half, the machine can be directly sealed by heat pressing or ultrasonic welding on both sides. This processing method can improve processing efficiency, but it can only process relatively regular structures. When the product is irregular, the processing process is more complicated. Therefore, for disposable underwear with complex structures, it still relies on manually operated machine processing.

[0004] Patent CN116671677B discloses a disposable underwear production method and production system. In the patent scheme, two layers of strip-shaped substrates are stacked and transported as the front and back pieces of the underwear. It can be seen that the underwear has a straight edge structure on the top and bottom, and the sealing is relatively simple, but this kind of underwear cannot achieve a good fit with the skin.

[0005] The existing three-dimensional pants concept has better wearing comfort, but cannot be processed in the processing system of the above patent. Therefore, providing a processing method of three-dimensional underwear is a necessary requirement for improving production efficiency. Summary of the invention

[0006] 1. Technical problem to be solved by the invention

[0007] The purpose of the present invention is to overcome the deficiency of the mature production process in the prior art that it is difficult to efficiently and automatically process three-dimensional underwear, and to provide a processing system and method for three-dimensional underwear. In this scheme, the three-dimensional underwear can be produced and processed using a substrate, without relying on manual operation, and the production efficiency is greatly improved.

[0008] 2. Technical solution

[0009] Improving the production efficiency of disposable underwear is a systematic problem of production, involving the type, production process and production equipment of underwear. How to choose the type of underwear suitable for high-speed production, the production process suitable for efficient manufacturing and ensuring appearance and comfort, and the supporting production equipment suitable for the selected product type and process are the core issues of improving the production efficiency of underwear. The further explanation of the three core issues of underwear type, production process and production equipment is as follows:

[0010] 1) As for the type of underwear, currently women generally wear unequal-sided pants with front and back waists. This type of pants has an ergonomic design, with better hip wrapping at the back waist and the overlapping edges of the front and back waists away from the sides of the crotch, which is friendly to wearing comfort. At present, some disposable underwear products on the market are made of non-woven fabrics and processed using an automatic molding process similar to diapers. This processing method generally requires that the front and back waists of the underwear are of equal width. After folding in half, the machine can be used to directly seal the two sides by glue or ultrasonic welding. This processing method can improve processing efficiency, but it can only process relatively regular structures. When the product is irregular, the processing process is more complicated. Therefore, for disposable underwear with complex structures, it still relies on manually operated machine processing.

[0011] 2) As for the production process, the current manual underwear manufacturing process usually includes shape cutting, folding and sealing processes. In terms of shape cutting process, the current cutting methods usually use manual cutting, CNC shape cutting machines and other equipment. This cutting form is used in discrete multi-station manufacturing mode and cannot be used for continuous high-efficiency production.

[0012] 3) For production equipment, in order to upgrade the existing manual production mode to high-efficiency automated production equipment, it is necessary to solve the design and development problems of complete sets of disposable underwear production equipment, and realize the production from raw materials to packaged finished products, which involves material unwinding, shape slitting, automatic folding, and edge sealing. In addition, the production equipment needs to be adaptively designed according to the rhythm requirements of different workstations.

[0013] For example, patent CN211091905U discloses a pair of highly elastic underwear with memory function, which adopts unequal waist design. The patent discloses the unequal waist design based on highly elastic materials in terms of product type, and discloses a manufacturing process based on integrated cutting, hot pressing and sewing and sealing in terms of manufacturing process. However, the manufacturing of the product of this solution still belongs to the traditional discrete manufacturing mode; the sewing and hot pressing are not suitable for continuous manufacturing on efficient automated production lines.

[0014] In order to achieve the purpose of rapid processing of three-dimensional underwear, the technical solution provided by the present invention is:

[0015] A three-dimensional underwear processing system of the present invention comprises a magnetic suspension flexible transmission device, and the magnetic suspension flexible transmission device is provided with:

[0016] The underwear sheet loading station is used to place the die-cut underwear sheets on the magnetic suspension flexible transmission line;

[0017] The lining sheet compounding station is provided with a compound manipulator, a lining sheet dispensing device and a lining sheet conveying device located within the movement trajectory of the compound manipulator. The compound manipulator has a grasping part for adsorbing the lining sheet, which can grasp the lining sheet from the lining sheet conveying device, move around the lining sheet dispensing device along a preset trajectory to apply glue to the lining sheet, and deliver the glued lining sheet to the magnetic suspension flexible transmission line for compounding with the underwear sheet;

[0018] An edge dispensing station is provided with a dispensing robot, the end of which is provided with a glue gun. The dispensing robot has a follow-up motion space on the magnetic suspension flexible transmission line. During the dispensing process, the magnetic float runs at a certain speed. The dispensing robot can drag the glue gun and the magnetic float to perform follow-up motion, and complete the application of the glue points on the predetermined trajectory during the follow-up motion.

[0019] A folding station is provided with a folding mechanism for folding the underwear sheet along the crotch area and folding the waist side inward so that the side edge can be bonded with the glue-dot edge; the width of the rear waist of the underwear formed by the processing is greater than the front waist, so that the overlapping part of the connection between the two is located in the front area of ​​the waist.

[0020] Furthermore, two dispensing robots are arranged in parallel.

[0021] Furthermore, the inner lining sheet composite station is provided with two composite robots and an inner lining sheet glue dispensing device in parallel, and the inner lining sheet glue dispensing device has a glue dispensing port facing vertically upwards.

[0022] Furthermore, the composite manipulator has at least two gripping parts, and each gripping part can be independently controlled to adsorb the lining sheet.

[0023] Furthermore, the magnetic levitation flexible transmission device is arranged in a ring shape to form a ring-shaped transmission line, and the underwear sheet loading station, the lining sheet composite station, the edge gluing station, and the folding station are respectively located on the four side lines of the transmission line.

[0024] Furthermore, the system also includes a product transfer station, which is provided with a transfer device for transferring the processed underwear to the folding and packaging production line.

[0025] The present invention discloses a method for processing three-dimensional underwear, wherein the three-dimensional underwear has a rear waist portion, a crotch portion and a front waist portion connected to each other, wherein the width of the rear waist portion is greater than that of the front waist portion, so that the overlapping portion where the two portions are connected is located in the front area of ​​the waist portion; the processing method comprises the following steps:

[0026] (a) die-cutting the trouser body material to form an underwear sheet, wherein the rear waist width of the underwear sheet is greater than the front waist width, adjacent underwear sheets are arranged front and back in an alternating manner, and an inner lining sheet is compounded on the underwear sheet;

[0027] (b) applying glue to the edge of the side edge of the back waist, and during the application of glue, the glue gun moves with the underwear sheet to follow the application of glue;

[0028] (c) folding the front waist portion in half along the transverse fold line so that the front waist portion fits onto the upper surface of the rear waist portion;

[0029] (d) Fold both side edges of the rear waist portion so that they overlap with the front waist portion, and bond and seal the side edges of the rear waist portion and the side edges of the front waist portion to form an overlapping portion.

[0030] Wherein, in the specific implementation, the step (a) of compounding the inner lining sheet comprises:

[0031] P1. Die-cut the lining material to form a lining sheet with a certain shape;

[0032] P2. Glue the inner lining sheet;

[0033] P3. Compound the lining sheet to the crotch area of ​​the underwear sheet.

[0034] Furthermore, during the die-cutting in step (a), the rear waist side edge of the rear waist portion and the front waist side edge of the front waist portion are both inclined in the longitudinal direction to form an inclined overlapping portion.

[0035] Furthermore, the processing system is used to process three-dimensional underwear. In the die-cutting process of the underwear sheet in step (a), negative pressure suction holes are distributed on the anvil roller of the die-cutting roller. After the shape of the underwear sheet is cut out, it is adsorbed on the surface of the anvil roller; then, the material is transferred to the surface of the magnetic floater through pure rolling of the anvil roller surface and the surface of the magnetic floater, and the presence or absence of negative pressure is controlled.

[0036] Further, in step P2, two composite manipulators alternately grab the lining sheets and respectively composite the lining sheets with the underwear sheets arranged alternately on the front and back sides;

[0037] The same composite manipulator is provided with three gripping parts. After the gripping parts adsorb the inner lining sheet, they move to above the inner lining sheet dispensing device and move along a preset trajectory above the dispensing port so that the edge of the inner lining sheet is coated with glue.

[0038] Furthermore, in step P3, when the composite robot is composited with three lining sheets, the magnetic float of the lining sheet composite station suspends movement, and the composite robot places a grasped lining sheet on the underwear sheet, rotates 180°, places the second one, and then rotates 180° to place the third one.

[0039] Furthermore, the processing method also includes the transfer of underwear, that is, at the transfer station, the underwear is transferred to the folding and packaging production line by using a transfer device; when the underwear is transferred, the direction of the underwear arranged front and back is adjusted so that the waist opening direction of the underwear is in the same direction or opposite direction as the transportation direction, and then it is transported to the next process.

[0040] Furthermore, the processing method also includes a folding and packaging step for the underwear. In the folding and packaging step, the underwear transmitted in the transportation direction is received, and both sides are folded toward the middle along the horizontal third position of the underwear; and then the crotch is folded toward the waist opening.

[0041] 3. Beneficial effects

[0042] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0043] The disposable three-dimensional underwear processing system of the present invention is suitable for the process steps of high-speed automated production of three-dimensional underwear products with overlapping waist circumferences of different front and rear waist lengths, and utilizes a magnetic levitation flexible transmission device in combination with a robot, and adopts an adhesive bonding process instead of traditional sewing and hot pressing processes to connect the edge parts. The robot can follow the glue dosing before the edge is sealed, and the connection of the underwear edges is achieved without stopping the machine. It is suitable for high-efficiency and automated production and processing of underwear products. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the structure of three-dimensional underwear;

[0045] Figure 2 It is a schematic diagram of the unfolded structure of the three-dimensional underwear;

[0046] Figure 3 A schematic diagram of a processing flow chart;

[0047] Figure 4 It is a schematic diagram of the structure of a ring transmission line and various processing stations;

[0048] Figure 5 Schematic diagram of the structure when two composite manipulators are used to composite the lining sheet

[0049] Figure 6 This is a schematic diagram of the processing flow of shorts with lining. Figure 3 and Figure 6 The A and B shown in the figure are for distinguishing two adjacent underwear sheets.

[0050] Description of labels:

[0051] 11. Back waist; 12. Front waist; 13. Crotch; 14. Overlap; 141. Back waist side edge; 142. Front waist side edge; 15. Waist opening; 151. Leg skirt edge; 16. Leg opening; 17. Lining;

[0052] 21. Magnetic suspension flexible transmission device; 22. Composite manipulator; 23. Lining sheet dispensing device; 24. Grabbing unit; 25. Dispensing manipulator;

[0053] 31. Additional transmission device. DETAILED DESCRIPTION

[0054] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0055] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0056] Figure 1 The structure of the three-dimensional underwear to be processed is shown, which has a connected rear waist 11, a crotch 13 and a front waist 12. The width of the rear waist 11 is greater than that of the front waist 12, so that the overlapping part 14 at the connection between the two is located in the front area of ​​the waist. In some embodiments, the overlapping part 14 is inclined relative to the longitudinal direction, that is, when worn, the overlapping part 14 is located on both sides of the abdomen. The top edges of the rear waist 11 and the front waist 12 of the three-dimensional underwear form a waist opening 15, and the bottom forms two leg openings 16.

[0057] The body material of the three-dimensional underwear can be made of materials such as modal or pure cotton, or non-woven fabrics. The body material has a certain elasticity and can stretch or shrink.

[0058] The underwear has a naked edge structure at the waist opening and the leg opening, thereby avoiding the formation of obvious strangulation marks. The naked edge structure does not require additional edge sewing or welding processes, which helps to improve production efficiency.

[0059] Figure 21 shows an unfolded structure of a three-dimensional underwear. The rear waist portion 11 has an inclined rear waist side edge 141, the inclined side of which is inclined in the longitudinal direction; the front waist portion 12 has an inclined front waist side edge 142, the inclined side of which is inclined in the longitudinal direction; the length of the rear waist side edge 141 and the front waist side edge 142 are equal, and in the unfolded view, the inclination directions are opposite. In some embodiments, the rear waist side edge 141 and the front waist side edge 142 can also be arranged in the longitudinal direction, adopting a non-inclined structure.

[0060] The connecting edge between the back waist side edge 141 and the front waist side edge 142 is the leg skirt edge 151. When the back waist side edge 141 and the front waist side edge 142 are sealed, the leg skirt edge 151 surrounds the leg opening 16. The crotch area of ​​the underwear sheet is composited with an inner lining sheet 17, which can be made of a skin-friendly soft material, making it more comfortable to wear.

[0061] Combination Figure 3 The disposable three-dimensional underwear processing method of this embodiment processes the above three-dimensional underwear, and the processing method includes the following steps:

[0062] (a) The trouser body material is transferred and die-cut to form an underwear sheet, wherein the width of the rear waist portion 11 of the underwear sheet is greater than the width of the front waist portion 12, and the rear waist side edge 141 of the rear waist portion 11 and the front waist side edge 142 of the front waist portion 12 are both inclined in the longitudinal direction; adjacent underwear sheets are arranged in an alternating manner.

[0063] The inner lining sheet 17 has a certain shape, and the width of one end of the inner lining sheet near the rear waist 11 is greater than the width of the other end. If a single-piece inner lining material is used, its width is slightly greater than the width or length of the inner lining sheet 17. In order to avoid material waste, the inner lining sheet 17 can be cut out in a staggered layout of front and back.

[0064] (b) applying glue to the edge of the rear waist side edge 141; when applying glue, the glue gun moves with the underwear sheet to follow the glue application;

[0065] (c) folding the front waist portion 12 in half along the transverse fold line so that the front waist portion 12 fits onto the upper surface of the rear waist portion 11;

[0066] (d) Fold both side edges of the rear waist portion 11 so that it partially overlaps with the front waist portion 12 , and the rear waist side edge 141 and the front waist side edge 142 are bonded and sealed to form the overlapping portion 14 .

[0067] In one embodiment, the compounding process of the lining sheet 17 includes:

[0068] P1, die-cutting the lining material to form a lining sheet 17 with a certain shape;

[0069] P2, gluing the inner lining sheet 17;

[0070] P3. Compound the lining sheet 17 to the crotch area 13 of the underwear sheet.

[0071] The trouser body material is selected according to the material of the processed underwear. The trouser body material can be elastic and can stretch and shrink, and does not need to be stretched during die-cutting.

[0072] Correspondingly, in order to realize the process of steps (a) to (d), the present application provides a three-dimensional underwear processing system, including a magnetic levitation flexible transmission device 21, and different processing stations are arranged along the transmission line formed by the magnetic levitation flexible transmission device 21, including an underwear sheet loading station, an inner lining sheet composite station, an edge gluing station and an underwear sheet folding station.

[0073] The die-cut underwear sheets are transported on the transmission line so that they can flow between different workstations and can be transmitted through a conveyor belt. In this embodiment, as a preference, a magnetic suspension flexible transmission device can be used to transmit the underwear sheets. The magnetic suspension flexible transmission device can control the movement at different workstations, start transmission or pause transmission. The technical principle of the magnetic suspension flexible transmission device can refer to CN106081606A, which is clearly disclosed and will not be repeated here.

[0074] The staggered arrangement refers to the arrangement of two sheets 180° apart, such as Figure 1 The arrangement of the A sheet and the B sheet indicated in FIG.

[0075] At the underwear sheet loading station, the underwear sheets are formed into positive and negative staggered arrangements by die-cutting rollers, and the die-cut underwear sheets are placed on the magnetic suspension flexible transmission line at the underwear sheet loading station.

[0076] A composite manipulator 22, a lining sheet dispensing device 23 and a lining sheet conveying device located within the movement trajectory of the composite manipulator 22 are provided at the lining sheet composite station. The composite manipulator 22 has a grabbing portion 24 for adsorbing the lining sheet. The grabbing portion 24 can grab the lining sheet from the lining sheet conveying device, and move around the lining sheet dispensing device 23 along a preset trajectory to apply glue to the lining sheet, and then send the glued lining sheet 17 to the magnetic levitation flexible transmission line for composite with the underwear sheet.

[0077] At the edge glue dispensing station, a glue dispensing robot is provided. The end of the glue dispensing robot 25 has a glue gun. The glue dispensing robot has a follow-up movement space on the magnetic suspension flexible transmission line, so that it has a certain movement distance and can complete the glue dispensing within a certain time. During the glue dispensing process, the magnetic float runs at a certain speed, and the glue dispensing robot can drag the glue gun and the magnetic float to perform a follow-up movement, and complete the application of the glue points along the predetermined trajectory during the follow-up movement. The glue dispensing robot dispenses glue on the side edge 141 of the back waist without affecting the folding operation of the front waist 12. This can improve the overall processing efficiency.

[0078] A folding mechanism is provided at the folding station of the underwear sheet, which is used to realize the folding of the underwear sheet along the crotch area and the folding of the waist side edges inward, so that the side edges can be bonded with the glued edges; the width of the rear waist of the underwear formed by the processing is larger than the front waist, so that the overlapping part of the connection between the two is located in the front area of ​​the waist.

[0079] When folding, the front waist portion 12 is folded along the crotch area to the back waist portion 11, and the side top edge of the back waist portion 11 corresponds to the side top edge of the front waist portion 12. Then the side edge of the back waist portion 11 is folded inwardly, so that the glue spot area of ​​the back waist side edge 141 overlaps the area at the front waist side edge 142, and the inner side of the back waist portion 11 and the outer side of the front waist portion 12 can be bonded and sealed to form the overlap portion 14, thereby forming the underwear to be processed.

[0080] The transmission line formed by the magnetic suspension flexible transmission device can be arranged in different ways. In one practicable manner, the transmission line of the magnetic suspension flexible transmission device is arranged in a ring shape, and the underwear sheet feeding station, the lining sheet compounding station, the edge glue dispensing station, and the folding station are respectively located on the edge lines of the ring transmission line. Multiple stations can be located on the same edge line, or each station can be located on a separate edge line.

[0081] like Figure 4 In one embodiment shown, the circular transmission line forms four sides, and the underwear sheet feeding station, the lining sheet compounding station, the edge glue dispensing station, and the underwear sheet folding station are respectively located on the four sides. An underwear sheet die-cutting device is provided at the underwear sheet feeding station to form underwear sheets; an inner lining sheet glue dispensing device 23 is provided at the inner lining sheet compounding station, and a glue dispensing robot 22 is provided at the edge glue dispensing station.

[0082] The underwear sheet die-cutting device is attached to the magnetic suspension flexible transmission device, and the underwear sheets after die-cutting are arranged on the transmission line in an alternating manner. The underwear sheet folding station is provided with a folding mechanism.

[0083] Among them, in the die-cutting process of underwear sheets, the underwear sheet die-cutting device has a die-cutting roller, and negative pressure suction holes are distributed on the anvil roller of the die-cutting roller. After the shape of the underwear sheet is cut out, it is adsorbed on the surface of the anvil roller; then, the material is transferred to the surface of the magnetic floater through pure rolling between the anvil roller surface and the magnetic floater surface, and negative pressure relay control.

[0084] At the lining sheet composite station, two composite manipulators 22 and lining sheet dispensing devices 23 are arranged in parallel with the station. Figure 5The dispensing port of the inner lining dispensing device 23 is arranged vertically upward, and the grasping part 24 of the composite manipulator 22 can adopt an end suction cup. After the end suction cup grasps the inner lining, it can move above the dispensing port according to a predetermined trajectory to realize dispensing on the lower surface of the inner lining.

[0085] In another embodiment, the composite manipulator has three gripping parts 24, that is, three gripping parts are connected to the end of a manipulator, each gripping part can be independently controlled for picking and placing, and the gripping part can adopt an adsorption gripping structure to absorb the lining sheet by negative pressure. During adsorption, since the lining sheets are also arranged in an alternating manner in the positive and negative directions, the three gripping parts 24 grab the lining sheets 17 along the same direction, and can be placed one by one on the underwear sheet after grabbing. Specifically, when the composite manipulator 22 is compounding three lining sheets, the magnetic float of the lining sheet compounding station stops moving, and the composite manipulator places a grabbed lining sheet on the underwear sheet, rotates 180°, places the second one, and then rotates 180° to place the third one, so that the three lining sheets are arranged and compounded in the direction of the underwear sheet. The gripping part 24 is connected to a lifting mechanism, which can make a single gripping part 24 descend during compounding to compound with the underwear sheet.

[0086] In another embodiment, in order to transport the processed underwear to the next workstation, for example, a transfer station can be set on the transmission line to form an underwear product after folding. The underwear product can be transferred to other processing lines through the product transfer station for other processing, such as transportation packaging or printing.

[0087] Combination Figure 6 For underwear with an inner lining, as an implementation method, the processing steps include:

[0088] S1. Transfer trouser body material and die-cut it to form underwear sheets, the width of the rear waist 11 of the underwear sheet is greater than the width of the front waist 12, and the rear waist side edge 141 of the rear waist 11 and the front waist side edge 142 of the front waist 12 are both inclined in the longitudinal direction; adjacent underwear sheets are arranged in a staggered manner in front and back; in the die-cutting process of the underwear sheets, negative pressure suction holes are distributed on the anvil roller of the die-cutting roller, and after the shape of the underwear sheet is cut out, it is adsorbed on the surface of the anvil roller; then, the material is transferred to the surface of the magnetic floater through pure rolling of the anvil roller surface and the surface of the magnetic floater, and the negative pressure is controlled alternately.

[0089] At the same time, in step P1, the lining material is die-cut by a die-cutting roller to form an inner lining sheet 17 with a certain shape; when the underwear sheet is transported to the inner lining sheet composite station, step P2 is performed to glue the inner lining sheet 17 so that the edge of the inner lining sheet 17 is glued.

[0090] S2. Compound the lining sheet 17 on the crotch area 13 of the underwear sheet.

[0091] During the compounding process, when the compounding manipulator is compounding three lining sheets, the magnetic float of the lining sheet compounding station stops moving, and the compounding manipulator places a grabbed lining sheet on the underwear sheet, rotates 180°, places the second one, and then rotates 180° to place the third one, so that the three lining sheets are arranged and compounded according to the direction of the underwear sheet. The two manipulators grab the lining sheets 17 twice, and compound the lining sheets 17 with the underwear sheets arranged in a staggered manner in the positive and negative directions, respectively, and work alternately to compound the transmission rhythm, so that the processing efficiency can be further improved.

[0092] S3, glue is applied to the edge of the back waist side edge 141. During the glue application, the magnetic suspension mover continues to work, and the glue dispensing robot has a follow-up motion space on the magnetic suspension flexible transmission line. During the glue dispensing process, the magnetic floater runs at a certain speed, and the glue dispensing robot can drag the glue gun and the magnetic floater to perform follow-up motion, and complete the application of the glue points on the predetermined trajectory during the follow-up motion. This process can ensure a faster processing speed.

[0093] S4, folding the front waist portion 12 in half along the transverse fold line so that the front waist portion 12 fits on the upper surface of the rear waist portion 11;

[0094] S5. Fold both side edges of the rear waist portion 11 to partially overlap with the front waist portion 12 , and bond and seal the rear waist side edge 141 and the front waist side edge 142 to form an overlap portion 14 .

[0095] Step S4 and step S5 are implemented at the folding station, and can be performed at two locations or separately. After folding, the basic processing of the underwear is completed.

[0096] In other embodiments, the processing method also includes transferring the underwear, that is, at a transfer station, transferring the underwear to a folding and packaging production line using a transfer device; when transferring the underwear, adjusting the direction of the underwear arranged front and back so that the waist opening direction of the underwear is in the same direction or opposite direction to the transportation direction, and then transporting it to the next process.

[0097] Furthermore, the processing method also includes a folding and packaging process for the underwear. In the folding and packaging process, the underwear transmitted in the transport direction is received, and the two sides are folded toward the middle along the horizontal one-third position of the underwear; then the crotch is folded toward the waist opening, and the folded underwear is placed in a packaging bag to achieve its packaging. After the underwear is processed, it needs to be packaged. If it is still arranged in a staggered manner, the packaging efficiency will be affected. Therefore, the transmission direction of the underwear can be adjusted through a direction adjustment process. In specific implementation, the packaging of the underwear can be attached to the existing packaging equipment. Therefore, the underwear can be arranged to the packaging and transportation line in a set direction by a robot or the like.

[0098] In order to cooperate with the implementation of folding packaging of underwear, in one embodiment, an additional transmission device is provided, and a folding packaging station can be set up with the additional transmission device to fold the processed underwear sheets for convenient packaging. The specific folding packaging structure can adopt the existing design scheme, and fold and package according to the folding packaging process, that is, receive the underwear transmitted in the transportation direction, fold the two sides toward the middle along the horizontal one-third position of the underwear; and then fold the crotch toward the waist opening. After completion, the packaging device can be used for packaging and packaging. The packaging device can also use existing packaging machinery and equipment.

[0099] The present application proposes process steps suitable for high-speed automated production of disposable three-dimensional underwear products with unequal front and rear waist lengths and overlapping waistline bevels; innovative development is carried out in terms of production technology and manufacturing equipment, which is suitable for high-efficiency, automated production and processing of underwear products, changing the existing production mode of complex structure underwear products that rely on manual processing, and can achieve a production capacity of at least 50 pieces per minute.

[0100] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A three-dimensional underwear processing system, characterized in that: It includes a magnetic suspension flexible transmission device, and is provided with: The underwear sheet loading station is used to place the die-cut underwear sheets on the magnetic suspension flexible transmission line; The lining sheet compounding station is provided with a compound manipulator, a lining sheet dispensing device and a lining sheet conveying device located within the movement trajectory of the compound manipulator. The compound manipulator has a grasping part for adsorbing the lining sheet, which can grasp the lining sheet from the lining sheet conveying device, move around the lining sheet dispensing device along a preset trajectory to apply glue to the lining sheet, and deliver the glued lining sheet to the magnetic suspension flexible transmission line for compounding with the underwear sheet; The lining sheet compounding station is provided with two compound manipulators and a lining sheet dispensing device in parallel. The lining sheet dispensing device has a vertical dispensing port. The two compound manipulators alternately grab the lining sheets and compound the lining sheets to the underwear sheets arranged in a staggered manner on both sides. The composite manipulator has at least two gripping parts, each of which can be independently controlled to adsorb and place the lining sheet; after the gripping part adsorbs the lining sheet, it moves to the top of the lining sheet dispensing device, and moves along a preset trajectory above the dispensing port, so that the edge of the lining sheet is coated with glue; during compounding, the composite manipulator places a grasped lining sheet on the underwear sheet, rotates 180 degrees, and places the second one; An edge dispensing station is provided with a dispensing robot, the end of which is provided with a glue gun. The dispensing robot has a follow-up motion space on the magnetic suspension flexible transmission line. During the dispensing process, the magnetic float runs at a certain speed. The dispensing robot can drag the glue gun and the magnetic float to perform follow-up motion, and complete the application of the glue points on the predetermined trajectory during the follow-up motion. A folding station is provided with a folding mechanism for folding the underwear sheet along the crotch area and folding the waist side inward so that the side edge can be bonded with the glue-dot edge; the width of the rear waist of the underwear formed by the processing is greater than the front waist, so that the overlapping part of the connection between the two is located in the front area of ​​the waist.

2. A three-dimensional underwear processing system according to claim 1, characterized in that: Two dispensing robots are arranged in parallel.

3. The three-dimensional underwear processing system according to claim 1, characterized in that: The magnetic suspension flexible transmission device is arranged in a ring shape to form a ring-shaped transmission line, and the underwear sheet feeding station, the lining sheet compounding station, the edge glue dispensing station and the folding station are distributed on the edge line of the transmission line.

4. The three-dimensional underwear processing system according to any one of claims 1 to 3, characterized in that: It also includes a product transfer station, which is provided with a transfer device for transferring the processed underwear to a folding and packaging production line.

5. A method for processing three-dimensional underwear, wherein the three-dimensional underwear has a rear waist, a crotch and a front waist connected to each other, the width of the rear waist is greater than that of the front waist, so that the overlapping part of the connection between the two is located in the front area of ​​the waist; the three-dimensional underwear is processed by using the processing system according to any one of claims 1 to 3, characterized in that: The processing method comprises the following steps: (a) die-cutting the trouser body material to form an underwear sheet, wherein the rear waist width of the underwear sheet is greater than the front waist width, adjacent underwear sheets are arranged front and back in an alternating manner, and an inner lining sheet is compounded on the underwear sheet; (b) applying glue to the edge of the side edge of the back waist, and during the application of glue, the glue gun moves with the underwear sheet to follow the application of glue; (c) folding the front waist portion in half along the transverse fold line so that the front waist portion fits onto the upper surface of the rear waist portion; (d) Fold both side edges of the rear waist portion so that they overlap with the front waist portion, and bond and seal the side edges of the rear waist portion and the side edges of the front waist portion to form an overlapping portion.

6. The three-dimensional underwear processing method according to claim 5, characterized in that: The step (a) of compounding the inner lining sheet comprises: P1. Die-cut the lining material to form a lining sheet with a certain shape; P2. Glue the inner lining sheet; P3. Compound the lining sheet to the crotch area of ​​the underwear sheet.

7. The three-dimensional underwear processing method according to claim 5, characterized in that: During the die-cutting in step (a), the rear waist side edge of the rear waist portion and the front waist side edge of the front waist portion are both inclined in the longitudinal direction to form an inclined overlapping portion.

8. The three-dimensional underwear processing method according to claim 6, characterized in that: The waist opening and leg openings of the panties are of naked edge construction.

9. The three-dimensional underwear processing method according to claim 6, characterized in that: In the die-cutting process of the underwear sheet in step (a), negative pressure suction holes are distributed on the anvil roller of the die-cutting roller. After the shape of the underwear sheet is cut out, it is adsorbed on the surface of the anvil roller; then, the material is transferred to the surface of the magnetic floater through pure rolling between the anvil roller surface and the magnetic floater surface, and the control of the presence or absence of negative pressure.

10. The three-dimensional underwear processing method according to claim 6, characterized in that: In step P2, The same composite manipulator is provided with three gripping parts. After the gripping parts adsorb the inner lining sheet, they move to above the inner lining sheet dispensing device and move along a preset trajectory above the dispensing port so that the edge of the inner lining sheet is coated with glue.

11. The three-dimensional underwear processing method according to claim 6, characterized in that: In step P3, when the composite robot is composited with three lining sheets, the magnetic float of the lining sheet composite station stops moving. The composite robot places a grasped lining sheet on the underwear sheet, rotates 180°, places the second one, and then rotates 180° to place the third one.

12. The three-dimensional underwear processing method according to claim 6, characterized in that: It also includes the transfer of underwear, that is, at the transfer station, the underwear is transferred to the folding and packaging production line by using a transfer device; when transferring the underwear, the direction of the underwear arranged front and back is adjusted so that the waist opening direction of the underwear is in the same direction or opposite to the transportation direction, and then it is transported to the next process.

13. The three-dimensional underwear processing method according to claim 12, characterized in that: The invention also includes a folding and packaging process for the underwear. In the folding and packaging process, the underwear transmitted in the transport direction is received, and both sides are folded toward the middle along the horizontal third position of the underwear; and then the crotch is folded toward the waist opening.

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