Wrapping and folding device

Abstract

The utility model discloses a wrapping and folding device which is applied to manufacturing of disposable shorts type wearing articles, the disposable shorts type wearing articles comprise outer packaging bodies, and the wrapping and folding device comprises a vacuum box, a split type bracket and a wrapping and folding plate. The vacuum box is provided with a conveying surface for conveying the disposable shorts type wearing articles; the wrapping and folding plates are symmetrically arranged along the flow center line; the wrapping and folding plate is of an L-shaped structure and is provided with a wrapping and folding panel and a side panel which are perpendicular to each other; the wrapping and folding panel is arranged above the conveying surface of the vacuum box and is parallel to the conveying surface of the vacuum box, and the wrapping and folding panel is used for folding the protruding part of the semi-finished product of the disposable shorts type wearing article along the edge part of the outer packaging body so as to form the disposable shorts type wearing article with a folding part; the side panel is fixedly arranged on the outer side of the vacuum box through the split type bracket and is perpendicular to the conveying face of the vacuum box, and the split type bracket comprises a first supporting piece and a second supporting piece which are perpendicular to each other. The wrapping and folding device solves the problem that in the prior art, the waistline edge of the shorts type wearing article cannot be accurately wrapped and folded in place.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable hygiene product manufacturing equipment, especially to baby pull-up pants, adult pull-up pants, women's sanitary pants, etc., and specifically relates to a folding device. Background Art

[0002] A disposable short-type wearing article (hereinafter referred to as a short-type wearing article for short) generally consists of an outer package 2' and an absorbent main body 3'. The outer package 2' includes an outer layer 21', an inner layer 22', and an elastic member 23' disposed between the outer layer 21' and the inner layer 22'. The absorbent main body 3' is a core structure that can absorb human excreta. The short-type wearing article has a length direction and a width direction perpendicular to the length direction in the unfolded state. In order to prevent the elastic member 23' (i.e., the end elastic member 23a', as Figure 1 shown) at the edge of the waist opening from being exposed, resulting in an unsatisfactory appearance at the edge of the waist opening, the outer layer 21' usually has a protruding portion that protrudes along the length direction from the inner layer 22'. This protruding portion is folded towards the absorbent main body 3' to form a folded portion 21a', and the folded portion 21a' covers both ends of the inner layer 22', thereby wrapping the end elastic member 23a'. In the wearing state of the short-type wearing article, the two side edges of the outer package 2' at the front waist and the rear waist are sealed to form side seal portions, thereby forming a trouser shape with a waist opening and two leg openings.

[0003] In the prior art, during the process of preparing the folded portion 21a' of the short-type wearing article, the folding effect is often unsatisfactory. Through research by relevant personnel, it is found that the processing technology of the existing folding plate 14' (fixed on the vacuum box 12') may cause the perpendicularity between the folding plate 14' and the vacuum box 12' to not meet the requirements (that is, it cannot satisfy that the folding plate 14' and the vacuum box 12' form 90°). In this case, the outer layer 21' cannot be folded to the edge positions at both ends of the inner layer 22' along the length direction. That is to say, the edge of the outer layer 21' cannot be accurately folded in place, which will cause a certain gap D between the edge portion 2e' of the outer layer 21' at the edge of the waist opening and the end elastic member 23a' closest to the edge of the waist opening, where D > 0, as Figure 1 shown. When the gap D has a certain distance, or even a larger distance, it will cause a lack of elasticity at the waist position, resulting in a low degree of fit between the edge position of the waist opening and the wearer's waist, thereby affecting the wearing effect. In addition, since the edge of the outer layer 21' cannot be accurately folded in place, resulting in a larger gap D, this will cause more wrinkles to appear at the edge of the waist opening of the outer package 2', resulting in an uneven edge of the waist opening, thereby affecting the overall appearance of the product and reducing the aesthetic degree.

[0004] Therefore, a solution needs to be proposed for the problems of the prior art. Summary of the Utility Model

[0005] In an embodiment of the present utility model, a wrapping device is provided. The L-shaped wrapping plate is fixed to the outside of the vacuum chamber through a split-type bracket, so that the side panel of the wrapping plate is perpendicular to the conveying surface of the vacuum chamber (i.e., forms 90°), thereby solving the problem that the waist edge of the short pants-type wearable article in the prior art cannot be accurately wrapped in place.

[0006] In an embodiment of the present utility model, a wrapping device is provided, which is applied to the manufacture of disposable short pants-type wearable articles. The disposable short pants-type wearable article includes an outer package body, and the outer package body includes an outer layer sheet, an inner layer sheet, and an elastic member extending in the width direction and disposed between the outer layer sheet and the inner layer sheet; the outer package body has an edge portion at the waist opening position, and the elastic member has an end elastic member at the edge portion. The wrapping device has a process direction and a longitudinal direction perpendicular to each other. The process direction corresponds to the width direction of the disposable short pants-type wearable article, and the longitudinal direction corresponds to the length direction of the disposable short pants-type wearable article; the wrapping device includes: a pair of vacuum chambers, at least a pair of split-type brackets, and a pair of wrapping plates. The vacuum chamber has a conveying surface for conveying the disposable short pants-type wearable article; the wrapping plates are symmetrically arranged along the process center line, and the process center line is the reference line for processing the disposable short pants-type wearable article; the wrapping plates are of an L-shaped structure and have a wrapping panel and a side panel perpendicular to each other. The wrapping panel is arranged above the conveying surface of the vacuum chamber and parallel to the conveying surface of the vacuum chamber, and is used for folding a pair of protruding portions of the semi-finished product of the disposable short pants-type wearable article along the edge portion of the outer package body to form a disposable short pants-type wearable article with a folded portion; the side panel is fixedly arranged on the outside of the vacuum chamber through the split-type bracket and is perpendicular to the conveying surface of the vacuum chamber, wherein the split-type bracket includes a first support member and a second support member perpendicular to each other.

[0007] In some embodiments, the thickness of the first support member and the second support member is greater than 6 mm.

[0008] In some embodiments, the vacuum chamber has a horizontal portion and an inclined portion; the inclined portion is configured to form an angle with the horizontal portion, the inclined portion is located on the upstream side of the horizontal portion, and the upper surfaces of the horizontal portion and the inclined portion form the conveying surface; a concave portion is provided at the connection position of the horizontal portion and the inclined portion, and the concave portion is separated from the inside of the vacuum chamber and extends in the longitudinal direction; the wrapping device further includes a pair of first driven rollers, and the first driven rollers are arranged in the concave portion.

[0009] In some embodiments, the wrapping device further includes a pair of support plates respectively located on both sides of the inclined portion of the vacuum box in the longitudinal direction; the support plates are disposed outside the vacuum box and are used to support a pair of protruding portions of the semi-finished product of the disposable short pants-type wearing article.

[0010] In some embodiments, the vacuum box includes a first vacuum box and a second vacuum box; the wrapping device further includes a first adjusting device and a second adjusting device, and the first adjusting device and the second adjusting device are respectively connected to the lower parts of the first vacuum box and the second vacuum box; the first adjusting device and the second adjusting device are respectively used to adjust the positions of the first vacuum box and the second vacuum box in the longitudinal direction.

[0011] In some embodiments, the wrapping device further includes a fixing frame and a mounting substrate, the first adjusting device and the second adjusting device are connected to the fixing frame, and the fixing frame is connected to the mounting substrate.

[0012] In some embodiments, the first adjusting device includes a first adjusting bolt, a first adjusting nut, a first slide rail and at least a pair of first sliders; the first adjusting bolt is in threaded cooperation with the first adjusting nut, the first adjusting bolt is connected to the fixing frame of the wrapping device, and the first adjusting nut is connected to the bottom of the first vacuum box; the first slide rail is connected to the fixing frame in the longitudinal direction, and the first slider is configured to be able to slide in the first slide rail in the longitudinal direction.

[0013] In some embodiments, the second adjusting device includes a second adjusting bolt, a second adjusting nut, a second slide rail and at least a pair of second sliders; the second adjusting bolt is in threaded connection with the second adjusting nut, the second adjusting bolt is connected to the fixing frame of the wrapping device, and the second adjusting nut is connected to the bottom of the second vacuum box; the second slide rail is connected to the fixing frame in the longitudinal direction, and the second slider is configured to be able to slide in the second slide rail in the longitudinal direction.

[0014] In some embodiments, the wrapping device further includes a pair of driving rollers, a pair of first driven rollers, a plurality of second driven rollers and a pair of conveyor belts, which are respectively arranged on both sides of the process center line in the longitudinal direction; on either side of the process center line, the conveyor belt is wound around the outer circumferences of the driving roller, the second driven roller and the first driven roller, and makes a circular motion above the conveying surface of the vacuum box.

[0015] In some embodiments, the vacuum box has a cavity with a cavity and a plurality of openings provided on the surface of the vacuum box; the cavity is connected to an external negative pressure structure.

[0016] In an embodiment of the present utility model, a wrapping and folding device is provided. A bracket with a split structure is used to fix an L-shaped wrapping and folding plate outside the vacuum chamber, so that the side panel of the wrapping and folding plate is perpendicular to the conveying surface of the vacuum chamber (i.e., forms a 90° angle), thereby solving the problem that the waist edge of the short-pants type wearing article in the prior art cannot be accurately wrapped and folded in place, enabling the end elastic member to be located at the edge of the waist opening position (i.e., the end elastic member abuts against the edge portion), which not only enhances the fit between the waist opening position and the wearer's waist, but also makes the waist opening edge of the outer package body flat, greatly improving the overall appearance and aesthetics of the product.

[0017] In addition, by configuring the vacuum chamber to have a horizontal portion and an inclined portion forming an angle with the horizontal portion, providing a concave portion at the connection position between the horizontal portion and the inclined portion, and arranging a first driven roller in the concave portion, the negative pressure inside the vacuum chamber can be prevented from affecting the wrapping and folding effect.

[0018] In addition, a first adjusting device and a second adjusting device are arranged below the vacuum chamber. The first adjusting device and the second adjusting device are used to adjust the position of the vacuum chamber in the longitudinal direction, thereby further ensuring the accuracy of the wrapping and folding dimensions, and it can also be applied to the wrapping and folding of products of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 A schematic diagram of the wrapping and folding of the outer layer sheet of a short-pants type wearing article by a wrapping and folding device in the prior art.

[0021] Figure 2 A schematic structural diagram of a wrapping and folding device in an embodiment of the present utility model.

[0022] Figure 3 A top view of a wrapping and folding device in an embodiment of the present utility model.

[0023] Figure 4 For Figure 2 A schematic cross-sectional view of the wrapping and folding device shown along the S-S direction.

[0024] Figure 5 For Figure 2 A schematic cross-sectional view of the wrapping and folding device shown along the T-T direction.

[0025] Figure 6 A schematic diagram of a short-pants type wearing article in an unfolded state in an embodiment of the present utility model.

[0026] Figure 7 is Figure 6 A schematic cross-sectional view of the short pants-type wearing article shown along the R-R direction.

[0027] Figure 8 A schematic view of the short pants-type wearing article in a worn state in an embodiment of the present utility model. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper", "lower", "left", and "right" generally refer to the upper, lower, left, and right in the actual use or working state of the device, specifically the drawing direction in the drawings.

[0029] An embodiment of the present utility model provides a folding device, which is applied to the manufacture of disposable short pants-type wearing articles. The disposable short pants-type wearing article includes an outer package body, and the outer package body includes an outer layer sheet, an inner layer sheet, and an elastic member extending along the width direction and disposed between the outer layer sheet and the inner layer sheet; the outer package body has an edge portion at the waist opening position, and the elastic member has an end elastic member at the edge portion. The folding device has a process direction and a longitudinal direction perpendicular to each other. The process direction corresponds to the width direction of the disposable short pants-type wearing article, and the longitudinal direction corresponds to the length direction of the disposable short pants-type wearing article; the folding device includes: a pair of vacuum boxes, at least a pair of split brackets, and a pair of folding plates. The vacuum box has a transfer surface for transferring the disposable short pants-type wearing article; the folding plates are symmetrically arranged along the process center line, and this process center line is the reference line for processing the disposable short pants-type wearing article; the folding plates are of an L-shaped structure and have a folding panel and a side panel perpendicular to each other. The folding panel is arranged above the transfer surface of the vacuum box and parallel to the transfer surface of the vacuum box, and is used for folding a pair of protruding portions of the semi-finished product of the disposable short pants-type wearing article along the edge portion of the outer package body to form a disposable short pants-type wearing article with a folded portion; the side panel is fixedly arranged on the outside of the vacuum box through the split bracket and is perpendicular to the transfer surface of the vacuum box. Among them, the split bracket includes a first support member and a second support member perpendicular to each other, and the first support member and the second support member can be connected to each other through a welding process.

[0030] Through the above structural design, especially the L-shaped wrapping flap is fixed to the outside of the vacuum box by a bracket with a split structure, so that the side panel of the wrapping flap is perpendicular to the conveying surface of the vacuum box, thus solving the problem that the waist circumference edge of the short pants type wearable article in the prior art cannot be accurately wrapped in place, enabling the end elastic member to be located at the edge of the waist opening position (i.e., the end elastic member abuts against the edge), which not only enhances the fit between the waist opening position and the wearer's waist, but also makes the waist opening edge of the outer package body flat, greatly improving the overall appearance and aesthetics of the product.

[0031] The following will provide a detailed description of a wrapping device provided in an embodiment of the present invention. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present invention. And in the following embodiments, each embodiment has its own emphasis. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0032] As Figures 2 to 8 shown, an embodiment of the present application provides a wrapping device 1. The wrapping device 1 is applied to manufacture disposable short pants type wearable articles S (referred to as short pants type wearable articles, the same hereinafter). As Figure 3 、 Figure 6 、 Figure 7 and Figure 8 shown, the short pants type wearable article S includes an outer package body 2 and an absorbent main body 3 connected to the outer package body 2. The outer package body 2 includes an outer layer piece 21, an inner layer piece 22, and an elastic member 23 disposed between the outer layer piece 21 and the inner layer piece 22 and extending in the width direction. At both ends of the outer layer piece 21 in the length direction, a pair of protruding parts 21p protruding from the inner layer piece 22 are respectively provided, and the pair of protruding parts 21p are turned over toward the side of the absorbent main body 3 to form a turned-over part 21a. The outer package body 2 has an edge part 2e at the waist opening position, and the elastic member 23 has an end elastic member 23a at the edge part 2e (i.e., the end elastic member 23a abuts against the edge part 2e). In other embodiments, the size of the inner layer piece 22 in the length direction can also be set to be longer, such as the same length as the outer layer piece 21 or slightly shorter than the outer layer piece 21, and then the outer layer piece 21 and the inner layer piece 22 are turned over together toward the inside of the absorbent main body 3 to form a turned-over part 21a. After folding, the elastic member 23 also has an end elastic member 23a at the edge part 2e (i.e., the end elastic member 23a abuts against the edge part 2e).

[0033] In the embodiment of the present application, the folding device 1 has a process direction (or conveying direction) and a longitudinal direction (or CD direction, where CD is the abbreviation of Cross Direction) that are perpendicular to each other. The process direction corresponds to the width direction of the short-pant-shaped wearing article S, and the longitudinal direction corresponds to the length direction of the short-pant-shaped wearing article S. In addition, the folding device 1 also has a process center line L, and the process center line L serves as a reference line for processing the short-pant-shaped wearing article S in the manufacturing equipment of the short-pant-shaped wearing article S.

[0034] In the embodiment of the present application, the folding device 1 is used to fold a pair of protruding portions 21p of the semi-finished product S0 of the short-pant-shaped wearing article towards the inside of the absorbent body 3 to form a short-pant-shaped wearing article S having a folded portion 21a, as Figure 3 .

[0035] Specifically, as Figure 2 and Figure 3 shown, the folding device 1 in the embodiment of the present application includes: a pair of driving rollers 11a, a pair of first driven rollers 11c, a plurality of second driven rollers 11b, a pair of vacuum boxes 12, a pair of conveyor belts 13, a pair of folding plates 14, at least a pair of split brackets 15 and a pair of support plates 18, which are respectively arranged on both sides of the process center line L. Among them, the vacuum box 12 has a conveying surface for conveying the short-pant-shaped wearing article S, and this conveying surface is the upper surface of the vacuum box 12. In this embodiment, the pair of vacuum boxes 12 refers to the first vacuum box 121 and the second vacuum box 122, as Figure 3 shown.

[0036] In this embodiment, the vacuum box 12 is arranged in the process direction between the driving roller 11a and the second driven roller 11b. As Figure 3 shown, the vacuum box 12 has a cavity with a cavity and a plurality of openings 120 arranged on the surface of the vacuum box 12. The aforementioned cavity is connected to a negative pressure mechanism, and this negative pressure mechanism can be a negative pressure fan or a vacuum generator.

[0037] The vacuum box 12 has a horizontal portion 12a and an inclined portion 12b that forms an angle with the horizontal portion 12a. The horizontal portion 12a is located on the downstream side of the inclined portion 12b, and the upper surfaces of the horizontal portion 12a and the inclined portion 12b form a conveying surface. A concave portion 12p is arranged at the connection position between the horizontal portion 12a and the inclined portion 12b of the vacuum box 12, and this concave portion 12p is separated from the inside of the vacuum box 12. As Figure 2 and Figure 3 shown, this concave portion 12p extends in the longitudinal direction, and a first driven roller 11c is arranged in this concave portion 12p. It should be noted that the first driven roller 11c is not arranged inside the cavity of the vacuum box 12. In other words, the first driven roller 11c is arranged outside the cavity of the vacuum box 12, so as to prevent the negative pressure inside the vacuum box 12 from affecting the folding effect of the short-pant-shaped wearing article.

[0038] Continue to refer to Figure 2 As shown, on either side of the process center line L, the conveyor belt 13 is wound around the outer circumferences of the driving roller 11a, the second driven roller 11b, and the first driven roller 11c. Driven by the driving roller 11a, the conveyor belt 13 makes a circular motion above the conveying surface of the vacuum chamber (i.e., the horizontal portion 12a and the inclined portion 12b). A plurality of communication holes (not shown in the figure) are provided on the outer peripheral surface of the conveyor belt 13, and the communication holes of the conveyor belt 13 correspond to the openings 120 of the vacuum chamber 12. Since the cavity of the vacuum chamber 12 is connected to a negative pressure mechanism, and the cavity of the vacuum chamber 12 communicates with the communication holes of the conveyor belt 13 through the openings 120, when the conveyor belt 13 makes a circular motion, the semi-finished product S0 of the short pants-type wearable article is adsorbed on the conveyor belt 13 by the negative pressure gas generated by the negative pressure mechanism, and is conveyed along with the circular motion of the conveyor belt 13 under the drive of a pair of driving rollers 11a.

[0039] As Figure 2 and Figure 3 As shown, the wrapping device 1 further includes a first adjusting device 16, a second adjusting device 17, a mounting substrate F, and a fixing bracket F0. Among them, the first adjusting device 16 and the second adjusting device 17 are connected below the vacuum chamber 12. Specifically, the first adjusting device 16 and the second adjusting device 17 are respectively connected to the lower sides of the first vacuum chamber 121 and the second vacuum chamber 122. Further, the first adjusting device 16 and the second adjusting device 17 are connected to the fixing bracket F0, and the fixing bracket F0 is connected to the mounting substrate F. The vacuum chamber 12 has a first vacuum chamber 121 close to the mounting substrate F and a second vacuum chamber 122 far from the mounting substrate F.

[0040] As Figure 3 and Figure 4As shown in the figure, a pair of symmetrically arranged folding plates 14 are provided above the horizontal portion 12a of the vacuum chamber 12. Specifically, the pair of folding plates 14 are symmetrically arranged along the process center line L. The folding plate 14 has an "L" - shaped structure, which has a folding panel 141 and a side panel 142 that are perpendicular to each other. The folding panel 141 is arranged above the conveying surface of the vacuum chamber 12 and is parallel to the conveying surface of the vacuum chamber 12, and is used to fold a pair of protruding portions 21p of the semi - finished product S0 of the short - type wearable article along the edge portion 2e of the outer package 2 to form a short - type wearable article S with a folded portion 21a. The side panel 142 is fixedly arranged on the outside of the vacuum chamber 12 through a split bracket 15. That is to say, the side panel 142 is fixed on the outside of the first vacuum chamber 121 and the second vacuum chamber 122 through the split bracket 15. The split bracket 15 includes a first support member 151 and a second support member 152 that are perpendicular to each other. In order to ensure the perpendicularity of the first support member 151 and the second support member 152 (that is, to make the first support member 151 and the second support member 152 form 90°), in this embodiment, the first support member 151 and the second support member 152 are connected by a welding process. During the welding process, only by welding the first support plate 151 and the second support plate 152 at a predetermined position can the perpendicularity of the welding be ensured (the thicker the support plate, the easier it is to achieve the perpendicularity of the welding). In this embodiment, the traditional folding process is not adopted because deformation is more likely to occur during the folding process (especially for thinner support plates). Therefore, it is difficult to ensure the perpendicularity of the first support member 151 and the second support member 152 with such a folding process.

[0041] In this embodiment, the side panel 142 of the folding plate 14 is connected to the outside of the vacuum chamber 12 through the first support member 151 and the second support member 152 that are perpendicular to each other, so as to ensure that the side panel 142 of the folding plate 14 is perpendicular to the conveying surface of the vacuum chamber 12 (that is, form 90°). Since the side panel 142 is perpendicular to the conveying surface of the vacuum chamber 12 and the folding panel 141 is parallel to the conveying surface of the vacuum chamber 12, therefore, through the folding operation of the folding device 1, the gap between the edge portion 2e of the outer package 2 of the short - type wearable article S and the end elastic member 23a can be zero or close to zero; as Figure 7 shown, thus effectively solving the problem that the waist folding in the prior art cannot be accurately folded in place, so that the end elastic member 23a can be located at the edge portion 2e of the waist opening position (that is, the end elastic member 23a abuts against the edge portion 2e), thereby improving the folding effect at the waist opening position, as Figure 4As shown, it not only enhances the fit between the waist opening position and the wearer's waist, but also makes the waist opening edge of the outer garment body 2 flat, greatly improving the overall appearance and aesthetics of the product. To ensure the perpendicularity of the welding between the first support member 151 and the second support member 152 of the split bracket 15 and its own strength (if the thickness of the support member is relatively thin, it is prone to deformation, which in turn leads to poor perpendicularity of the welding), in this embodiment, the thickness of the first support member 151 and the second support member 152 is greater than 6 mm.

[0042] As described above, the first adjusting device 16 and the second adjusting device 17 are respectively connected below the first vacuum chamber 121 and the second vacuum chamber 122. The first adjusting device 16 and the second adjusting device 17 are respectively used to adjust the positions of the first vacuum chamber 121 and the second vacuum chamber 122 in the longitudinal direction, so as to ensure the accuracy of the wrapping size, and can also be applied to the wrapping of products of different sizes.

[0043] Specifically, as Figure 2 and Figure 3 shown, the first adjusting device 16 includes a first adjusting bolt 161, a first adjusting nut 162, a first slide rail 163 and at least a pair of first sliders 164. The first adjusting bolt 161 is in threaded cooperation with the first adjusting nut 162. The first adjusting bolt 161 is connected to the fixing frame F0, and the first adjusting nut 162 is connected to the bottom of the first vacuum chamber 121. The first slide rail 163 is connected to the fixing frame F0 in the longitudinal direction, and the first slider 164 is configured to be able to slide in the first slide rail 163 in the longitudinal direction. In this embodiment, there are two pairs of first sliders 164, and each pair of first sliders 164 is arranged on both sides of the process center line L, and each pair of first sliders 164 is connected to the bottoms of the first vacuum chamber 121 and the second vacuum chamber 122.

[0044] The second adjusting device 17 includes a second adjusting bolt 171, a second adjusting nut 172, a second slide rail 173 and at least a pair of second sliders 174. The second adjusting bolt 171 is threadedly connected to the second adjusting nut 172. The second adjusting bolt 171 is connected to the fixing frame F0, and the second adjusting nut 172 is connected to the bottom of the second vacuum chamber 122. The second slide rail 173 is connected to the fixing frame F0 in the longitudinal direction, and the second slider 174 is configured to be able to slide in the second slide rail 173 in the longitudinal direction. In this embodiment, there are two pairs of second sliders 174, and each pair of second sliders 174 is arranged on both sides of the process center line L, and each pair of second sliders 174 is connected to the bottoms of the first vacuum chamber 121 and the second vacuum chamber 122.

[0045] When adjusting the first adjusting bolt 161, the first adjusting nut 162 threadedly connected to the first adjusting bolt 161 can drive the first vacuum box 121 connected thereto to move in the longitudinal direction. At the same time, the first slider 164 and the second slider 174 connected to the first vacuum box 121 move in the longitudinal direction along the first slide rail 163 and the second slide rail 173 respectively, so that the position of the first vacuum box 121 in the longitudinal direction can be adjusted.

[0046] When adjusting the second adjusting bolt 171, the second adjusting nut 172 threadedly connected to the second adjusting bolt 171 can drive the second vacuum box 122 connected thereto to move in the longitudinal direction. At the same time, the first slider 164 and the second slider 174 connected to the second vacuum box 122 move in the longitudinal direction along the first slide rail 163 and the second slide rail 173 respectively, so that the position of the second vacuum box 122 in the longitudinal direction can be adjusted. In the above manner, the wrapping size can be made more accurate, and it can also be applied to the wrapping of products of different sizes.

[0047] Continue to refer to Figure 2 、 Figure 3 and Figure 5 , on both sides of the inclined portion 12b of the vacuum box 12 in the longitudinal direction, support plates 18 are respectively provided, and the support plates 18 are respectively arranged on the outer sides of the first vacuum box 121 and the second vacuum box 122 in the longitudinal direction. The support plates 18 are used to support a pair of protruding portions 21p of the outer layer sheet 21 of the semi-finished product S0 of the short-pants type wearing article, so as to prepare for the subsequent wrapping operation of the protruding portions 21p, thereby preventing the poor wrapping effect caused by the sagging of the protruding portions 21p due to the action of gravity.

[0048] The above has introduced in detail a wrapping device provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A wrapping device is applied to manufacture disposable short pants-type wearing articles. The disposable short pants-type wearing articles include an outer package body, and the outer package body includes an outer layer sheet, an inner layer sheet, and an elastic member disposed between the outer layer sheet and the inner layer sheet and extending in the width direction; the outer package body has an edge portion located at the waist opening position, the elastic member has an end elastic member located at the edge portion, the wrapping device has a process direction and a longitudinal direction perpendicular to each other, the process direction corresponds to the width direction of the disposable short pants-type wearing article, and the longitudinal direction corresponds to the length direction of the disposable short pants-type wearing article, and is characterized in that, The folding device includes: a pair of vacuum chambers, at least a pair of split brackets, and a pair of folding plates. The vacuum chambers have a conveying surface for conveying the disposable short pants-type wearing articles. The folding plates are symmetrically arranged along the process center line, which is the reference line for processing the disposable short pants-type wearing articles. The folding plates are of an L-shaped structure and have a folding panel and a side panel that are perpendicular to each other. The folding panel is arranged above the conveying surface of the vacuum chambers and parallel to the conveying surface of the vacuum chambers, and is used for folding a pair of protruding portions of the semi-finished product of the disposable short pants-type wearing articles along the edge portion of the outer package to form a disposable short pants-type wearing article with a folded portion. The side panel is fixedly arranged outside the vacuum chambers through the split brackets and is perpendicular to the conveying surface of the vacuum chambers. Among them, the split brackets include a first support member and a second support member that are perpendicular to each other.

2. The folding device according to claim 1, wherein The thicknesses of the first support member and the second support member are greater than 6 mm.

3. The wrapping and folding device according to claim 1, characterized in that The vacuum chambers have a horizontal portion and an inclined portion. The inclined portion is configured to form an angle with the horizontal portion, and the inclined portion is located on the upstream side of the horizontal portion. The upper surfaces of the horizontal portion and the inclined portion form the conveying surface. A concave portion is provided at the connection position between the horizontal portion and the inclined portion. The concave portion is separated from the inside of the vacuum chambers and extends in the longitudinal direction. The folding device further includes a pair of first driven rollers, and the first driven rollers are arranged in the concave portion.

4. The folding device according to claim 1, wherein, The folding device further includes a pair of support plates, and the support plates are respectively located on both sides of the inclined portion of the vacuum chambers in the longitudinal direction. The support plates are arranged outside the vacuum chambers and are used for supporting a pair of protruding portions of the semi-finished product of the disposable short pants-type wearing articles.

5. The wrapping and folding device according to claim 1, wherein The vacuum chambers include a first vacuum chamber and a second vacuum chamber. The folding device further includes a first adjusting device and a second adjusting device, and the first adjusting device and the second adjusting device are respectively connected to the lower parts of the first vacuum chamber and the second vacuum chamber. The first adjusting device and the second adjusting device are respectively used for adjusting the positions of the first vacuum chamber and the second vacuum chamber in the longitudinal direction.

6. The wrapping and folding device according to claim 5, characterized in that The folding device further includes a fixing frame and a mounting substrate, and the first adjusting device and the second adjusting device are connected to the fixing frame, and the fixing frame is connected to the mounting substrate.

7. The wrapping and folding device according to claim 6, wherein The first adjusting device includes a first adjusting bolt, a first adjusting nut, a first slide rail, and at least a pair of first sliders. The first adjusting bolt is in threaded cooperation with the first adjusting nut. The first adjusting bolt is connected to the fixing frame of the folding device, and the first adjusting nut is connected to the bottom of the first vacuum chamber. The first slide rail is connected to the fixing frame in the longitudinal direction, and the first sliders are configured to be able to slide in the first slide rail in the longitudinal direction.

8. The wrapping and folding device according to claim 6, characterized in that, The second adjusting device includes a second adjusting bolt, a second adjusting nut, a second slide rail and at least a pair of second sliders; the second adjusting bolt is threadedly connected to the second adjusting nut, the second adjusting bolt is connected to the fixed frame of the wrapping device, and the second adjusting nut is connected to the bottom of the second vacuum chamber; the second slide rail is connected to the fixed frame in the longitudinal direction, and the second slider is configured to be able to slide in the second slide rail in the longitudinal direction.

9. The folding device according to claim 1, wherein The wrapping device further includes a pair of driving rollers, a pair of first driven rollers, a plurality of second driven rollers and a pair of conveyor belts, which are respectively arranged on both sides of the process center line in the longitudinal direction; on either side of the process center line, the conveyor belt is wound around the outer circumferences of the driving roller, the second driven roller and the first driven roller, and makes a circular motion above the conveying surface of the vacuum chamber.

10. The wrapping and folding device according to claim 1 or 9, characterized in that, The vacuum chamber has a cavity with a cavity and a plurality of openings provided on the surface of the vacuum chamber; the cavity is connected to an external negative pressure structure.

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