An o-cutting roll of a disposable pant production apparatus

Abstract

The utility model relates to a kind of O cutter roller of disposable underpants production equipment, the roller body of O cutter roller is set on the front side of O cutter portion and has the front side cam guide structure extending along the circumferential direction of roller body and connected head to tail, the rear side of O cutter portion is set on the roller body and has the rear side cam guide structure extending along the circumferential direction of roller body and connected head to tail, front side cam guide structure has the front side cam portion with the shape matching the front end shape of O cutter portion, rear side cam guide structure has the rear side cam portion with the shape matching the rear end shape of O cutter portion, front side moving block and rear side moving block are assembled and guided to move along front-rear direction on assembly support.The utility model solves the technical problem that legging rubber band and leg portion forming hole edge shape do not match in prior art, leading to legging easy to curl when wearing, and legging rubber band adheres and with the motion speed of O cutter roller mismatch.

Description

Technical Field

[0001] This utility model relates to the field of disposable underwear production, and in particular to an O-cut guide roller for disposable underwear production equipment. Background Technology

[0002] The disposable underwear products currently sold on the market, such as baby training pants, menstrual pants, and adult pants, are manufactured by attaching a knitted lining to a bonded knitted fabric. This material can be called underwear fabric. Then, an O-cutting roller is used to cut out leg forming holes in the underwear fabric. Specifically, three consecutive underwear fabrics are called the first fabric, the second fabric, and the third fabric. One leg forming hole spans the first and second fabrics, and another leg forming hole spans the second and third fabrics. The knitted lining corresponds to the area between two adjacent leg forming holes, and the inner side of the knitted fabric in this area corresponds to the crotch area of ​​the wearer.

[0003] Then, each piece of fabric is folded in half vertically and glued together, forming a pair of underwear. Finally, each piece of fabric is cut. The O-cut roller is called an O-cut roller because it has an O-cutting section. The O-cutting section is used to form leg forming holes for the wearer's thighs. The leg forming holes, which span between two adjacent pieces of fabric, are roughly heart-shaped.

[0004] The problem with existing technology is that, in order to ensure a snug fit between disposable underwear and the wearer's thighs during wear, leg elastic bands are needed at the leg shaping holes. In existing technology, the leg elastic bands are formed by the reciprocating linear motion of an adjusting rod, creating an S-shaped curve. This results in an S-shaped leg elastic band being formed on the underwear fabric. The fit between the leg elastic band and the leg shaping holes is similar to that described in Chinese Patent CN207412315U, "Adhesive Layer Based on S-shaped Leg Elastic Band in Disposable Absorbent Products." Figure 1 and attached Figure 3 As shown in the figure.

[0005] The shape of the leg band does not match the edge shape of the leg molding hole, which does not achieve the wearing effect of locking the leg edge. The larger distance between the band and the skin does not fit well when wearing, and the edge is prone to lifting. In addition, the reciprocating motion of the adjustment rod is driven by a servo motor, and its response time limits its stability when running at high speed, which can easily cause phase lag and increase the scrap rate. Utility Model Content

[0006] The purpose of this utility model is to provide an O-cutting guide roller in a disposable underwear production equipment to solve the technical problems in the prior art where the shape of the leg band does not match the edge of the leg forming hole, causing the leg band to easily curl up when worn, and the leg band's adhesion speed does not match the movement speed of the O-cutting roller.

[0007] To solve the above technical problems,

[0008] The technical solution for the O-cutting roller in a disposable underwear production equipment of this utility model is as follows:

[0009] The O-cutting roller includes a roller body and an O-cutting section disposed on the outer periphery of the roller body for traversing two adjacent fabrics. A front cam guide structure extending circumferentially and connected end-to-end is provided on the front side of the O-cutting section on the roller body, and a rear cam guide structure extending circumferentially and connected end-to-end is provided on the rear side of the O-cutting section on the roller body. The front cam guide structure has a front cam portion whose shape matches the front end shape of the O-cutting section, and the rear cam guide structure has a rear cam portion whose shape matches the rear end shape of the O-cutting section. The front cam guide structure is used to guide and move in coordination with the front guide portion on the front moving block, and the rear cam guide structure is used to guide and move in coordination with the rear guide portion on the rear moving block.

[0010] Furthermore, the roller body has two O-cutting blades evenly spaced along the circumference, and the front cam guide structure has two front cams that match the front end shape of each O-cutting blade; the rear cam guide structure has two rear cams that match the rear end shape of each O-cutting blade.

[0011] Furthermore, both the front cam guide structure and the rear cam guide structure are cam groove structures.

[0012] Furthermore, bearing rings are provided at both ends of the roller body.

[0013] The beneficial effects of this utility model are as follows: In this utility model, when the O-cutting roller rotates to cut the leg forming holes in the underwear fabric, the front elastic band is guided by the front cam part. The layout trajectory of the front elastic band is the same as the shape trajectory of the front cam part. Therefore, the layout shape of the front elastic band matches the front end shape of the O-cutting part. Similarly, the layout shape of the rear elastic band matches the rear end shape of the O-cutting part. This ensures that the shapes of the front and rear elastic bands match the leg forming holes, thereby ensuring the fit of the leg elastic band to the leg during wearing. At the same time, the movement of the front and rear moving blocks in this utility model is driven by the O-cutting roller, thus ensuring the matching of the movement speed of the leg elastic band with the O-cutting roller when it is adhered. Attached Figure Description

[0014] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding portions, wherein:

[0015] Figure 1 This is a schematic diagram of the structure of the disposable underwear production equipment of this utility model;

[0016] Figure 2 yes Figure 1 A flowchart illustrating the process of fabric preparation for disposable underwear.

[0017] Figure 3 yes Figure 1 Schematic diagram of the structure of the O-shaped assembly;

[0018] Figure 4 yes Figure 1 A schematic diagram of the structure of one embodiment of the O-type cutting roller;

[0019] Figure 5 This is a schematic diagram showing the cooperation of the front moving block, the front rubber band guide bracket, the front rubber band guide structure, and the front guide part in the O-cut assembly in this embodiment;

[0020] Figure 6 yes Figure 4 A schematic diagram showing the unfolded front cam guide structure and rear cam guide structure of the O-type cutter roller;

[0021] 1. Elastic spandex unwinding roller; 2. Non-elastic fabric unwinding roller; 3. Lining fabric unwinding roller; 4. Glue coating device; 5. Ultrasonic edge sealing device; 6. Elastic band unwinding roller; 7. Non-woven fabric unwinding roller; 8. O-cutting assembly; 9. O-cutting roller; 10. O-cutting bottom roller; 11. Ultrasonic waistband side sealing mold; 12. Slitting assembly; 13. Wrapping unwinding roller; 14. Packaging; 15. Folding; 16. Knitted fabric lining; 17. Rear elastic band; 18. Front elastic band; 19. Leg forming hole; 20. First fabric; 21. Second fabric; 22. Third fabric; 23. Compacting roller; 24. Underwear base material; 25. Non-woven fabric; 26. O-cutting part; 27. Rear moving block; 28. Rear moving block track; 29. ​​Rear elastic band guide bracket; 30. Rear adjusting rod; 31. Rear cam guide structure; 32. Front cam guide structure; 33. Bearing ring; 34. Rear cam part; 35. Front cam part; 36. Rear guide part; 37. Second vertical rod; 38. Second horizontal rod; 39. Rear elastic band perforation. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0024] An example of an O-cutting roller in a disposable underwear production equipment of this utility model is shown below. Figures 1-6 As shown:

[0025] In this embodiment, the O-cutting roller includes a roller body and an O-cutting section 26, i.e., an O-cutting blade, disposed on the outer periphery of the roller body for crossing two adjacent fabrics. The outer periphery of the O-cutting roller has two O-cutting sections that are evenly spaced along the circumference. The O-cutting sections are used to cut out leg forming holes 19 on two adjacent pieces of underwear fabric. The shape of the leg forming holes 19 is similar to a heart shape. The O-cutting sections are prior art and will not be described in detail here.

[0026] On the front side of the O-cutting roller, a front cam guide structure 32 is provided on the roller body, extending circumferentially along the roller body and connected end to end. The front cam guide structure 32 is a cam groove structure. The front cam guide structure 32 has a front cam part 34 whose shape matches the front end shape of the O-cutting part, that is, a front cam groove structure. In this embodiment, the matching means that the shape of the front cam part 34 is consistent with the front end shape of the O-cutting part. In fact, the two are arranged side by side with intervals along the axial direction of the O-cutting roller.

[0027] The O-cutting roller has a rear cam guide structure 31 that extends circumferentially along the roller body and is connected end to end on the rear side of the O-cutting part. The rear cam guide structure 31 is a cam groove structure. The rear cam guide structure 31 has a rear cam part whose shape matches the front end shape of the O-cutting part, i.e., a rear cam groove structure. In this embodiment, the matching means that the shape of the rear cam part is consistent with the front end shape of the O-cutting part. The two are arranged side by side at intervals along the axial direction of the O-cutting guide roller. When the shape of the rear cam part is consistent with the front end shape of the O-cutting part, under the guiding action of the rear cam part, the arrangement shape of the rear elastic rib can be consistent with the shape of the front end of the O-cutting part, i.e., the shape of the leg forming hole at the corresponding position.

[0028] Bearing rings 33 are provided at both ends of the roller body.

[0029] The O-cutting roller is part of the O-cutting assembly, which is part of the disposable underwear production equipment.

[0030] The disposable underwear production equipment includes an underwear substrate making device, an elastic band unwinding device 1, a non-woven fabric unwinding roller 7, and an O-cutting assembly 8. The O-cutting assembly 8 includes an assembly bracket, on which an O-cutting bottom roller 10 with its axis extending in the front-back direction and an O-cutting blade roller 9 that cooperates with the O-cutting bottom roller are rotatably mounted. The O-cutting blade roller 9 is driven by a blade roller power mechanism.

[0031] The underwear substrate manufacturing device includes an inner lining fabric unwinding roller 3, a non-woven elastic fabric unwinding roller 2, and an elastic spandex filament unwinding roller 1. Item 4 in the figure represents an adhesive coating device, and item 5 represents an ultrasonic edge sealing device. The non-woven elastic fabric, inner lining fabric, and elastic spandex filament are combined to form the underwear substrate 24. All of the above belong to the prior art and will not be described in detail here.

[0032] The leg elastic bands are bonded between the underwear substrate 24 and the nonwoven fabric unwound by the nonwoven fabric unwinding roller. The leg elastic bands include a front elastic band 18 and a rear elastic band 17. The distribution of the front elastic band 18 and the rear elastic band 17 on the underwear substrate requires the assistance of the O-cutting roller of the O-cutting assembly. The specific process is as follows:

[0033] The O-cut assembly includes an assembly bracket, an O-cut guide roller rotatably mounted on the assembly bracket, and an O-cut bottom roller rotatably mounted on the assembly bracket for use with the O-cut blade roller. The O-cut blade roller and the O-cut bottom roller work together to cut out leg forming holes in the underwear bottom material. The O-cut assembly described above belongs to the prior art.

[0034] For the improvement of the O-cut assembly, a front moving block guide rail is provided on the assembly bracket, and a front moving block is mounted on the front moving block guide rail in the front-to-back direction. The front moving block has a front guide part that cooperates with the front cam guide structure. A front elastic band guide bracket is provided on the front moving block, and a front elastic band guide structure is provided on the front elastic band guide bracket for cooperation with the front elastic band guide.

[0035] In this embodiment, the front guide portion includes a front guide rod whose axis extends in the left-right direction and is fixed to the front moving block. One end of the front guide rod is inserted into the front cam groove. When the O-cutting roller rotates, the front cam groove and the front guide rod slide in contact, which can drive the front moving block to move back and forth along the front moving block guide rail.

[0036] The front elastic band guide bracket includes a first vertical bar and a first horizontal bar arranged horizontally and vertically. A front adjusting rod is rotatably mounted at the end of the first horizontal bar. The front elastic band guide structure includes a front elastic band through hole at the end of the front adjusting rod. The front adjusting rod is connected to the first horizontal bar by bolts. When the bolts are loosened, the swing angle of the front adjusting rod can be adjusted. During operation, the bolts are tightened, the angle of the front adjusting rod is fixed, and the front elastic band passes through the front elastic band through hole.

[0037] The assembly bracket is provided with a rear moving block track 28, and a rear moving block 27 is mounted on the rear moving block track 28 in a front-to-back direction. The rear moving block has a rear guide part that cooperates with the rear cam guide structure for guided movement. A rear elastic band guide bracket is provided on the rear moving block, and a rear elastic band guide structure is provided on the rear elastic band guide bracket for cooperation with the rear elastic band guide.

[0038] In this embodiment, the rear guide portion 36 includes a rear guide rod whose axis extends in the left-right direction and is fixed to the rear moving block. One end of the rear guide rod is inserted into the rear cam groove. When the O-cutting roller rotates, the rear cam groove and the rear guide rod slide in contact, which can drive the rear moving block 27 to move back and forth along the rear moving block guide rail.

[0039] The rear elastic guide bracket 29 includes a second vertical rod 37 and a second horizontal rod 38 arranged horizontally and vertically. The end of the second horizontal rod 38 is rotatably fitted with a rear adjustment rod 30. The rear elastic guide structure includes a rear elastic through hole 39 provided at the end of the rear adjustment rod 30. The rear adjustment rod is connected to the second horizontal rod 38 by bolts. When the bolts are loosened, the swing angle of the rear adjustment rod can be adjusted. During operation, the bolts are tightened, the angle of the rear adjustment rod is fixed, and the rear elastic 17 passes through the rear elastic through hole and is adhered between the underwear substrate 24 and the non-woven fabric 25.

[0040] After the front and back elastic bands are bonded to the underwear substrate 24 and the nonwoven fabric 25, they are folded longitudinally, then side-sealed by the ultrasonic waistband side-sealing mold 11, then longitudinally cut by the longitudinal cutting assembly 12, then folded in half 15, and finally packaged with the film released by the wrapping unwinding roller 13 14. The subsequent processes of bonding the front elastic band 18 and the back elastic band 17 to the underwear substrate and the nonwoven fabric are also existing technologies and will not be described in detail here. The innovative improvement in this invention is that the front and back elastic bands are bonded to the underwear substrate in a specific shape under the drive of the O-cutting roller, so that the shape of the leg band formed by the front and back elastic bands matches the shape of the leg forming hole, ensuring the fit of the leg band to the wearer's thigh during wearing.

[0041] definition Figure 2 The three adjacent pieces of fabric are fabric 20, fabric 21, and fabric 22. One leg forming hole spans the first and second fabrics, and the other leg forming hole spans the second and third fabrics. Item 16 represents a knitted lining.

[0042] In other embodiments of this utility model, depending on the matching between the rotation speed of the O-cutting roller and the production speed of disposable underwear, the number of O-cutting parts on the outer periphery of the O-cutting roller can be one, three or other numbers; the front cam guide structure and the rear cam guide structure can also be non-cam groove structures, for example, protrusion structures, in which case the front guide part and the rear guide part have guide grooves that cooperate with the corresponding protrusion structure.

[0043] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0045] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An O-cutting roller for disposable underwear production equipment, comprising a roller body and an O-cutting section disposed on the outer periphery of the roller body for traversing two adjacent fabrics, characterized in that: A front cam guide structure extending circumferentially and connected end-to-end is provided on the front side of the O-cutter section of the roller body, and a rear cam guide structure extending circumferentially and connected end-to-end is provided on the rear side of the O-cutter section of the roller body. The front cam guide structure has a front cam portion whose shape matches the front end shape of the O-cutter section, and the rear cam guide structure has a rear cam portion whose shape matches the rear end shape of the O-cutter section. The front cam guide structure is used to guide and move in coordination with the front guide portion on the front moving block, and the rear cam guide structure is used to guide and move in coordination with the rear guide portion on the rear moving block.

2. The O-cutting roller of the disposable underwear production equipment according to claim 1, characterized in that: The roller has two O-cutting blades evenly spaced along the circumference. The front cam guide structure has two front cams that match the front end shape of each O-cutting blade. The rear cam guide structure has two rear cams that match the rear end shape of each O-cutting blade.

3. The O-cutting roller of the disposable underwear production equipment according to claim 1, characterized in that: The roller body is equipped with bearing rings at both ends.

4. The O-cutting roller of the disposable underwear production equipment according to any one of claims 1 to 3, characterized in that: Both the front cam guide structure and the rear cam guide structure are cam groove structures.

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