Folding system

Abstract

An embodiment of the utility model provides a folding system which comprises a U-shaped conveying section for clamping and conveying products and a folding device, the U-shaped conveying section further comprises an opening for discharging the products from the U-shaped conveying section, the folding device comprises a folding knife assembly and a cleaning assembly, the folding knife assembly comprises a blade portion rotationally arranged around a folding rotation axis, and the cleaning assembly is arranged on the blade portion. The cleaning assembly comprises a pair of cleaning rollers which are rotationally arranged, the spacing distance between the pair of cleaning rollers in the direction of the folding rotating axis is smaller than the thickness of the blade part, and by means of the arrangement, on one hand, when products are poor in the U-shaped conveying middle section or the U-shaped conveying front section or the upstream position, the products can be discharged through the opening; and on the other hand, the blade part can be cleaned through the arranged cleaning assembly, and product damage caused in the folding process is further avoided.

Description

Technical Field

[0001] This utility model relates to a folding system, and more particularly to a folding system applied to disposable hygiene product manufacturing equipment. Background Technology

[0002] Disposable hygiene products (such as mattresses, tissues, sanitary napkins, diapers, etc.) are closely related to people's lives and health, and are basic products in the field of national health care. After the production of disposable hygiene products, they generally need to go through processes such as cutting, folding, and packaging. Among them, the folding process involves folding the disposable hygiene products in half or thirds to reduce their volume, making it easier to package them according to different specifications.

[0003] Currently, folding systems such as those shown in patent document CN212099639U can be used to fold products. However, in practice, existing folding systems have been found to have the following two problems:

[0004] Inside the U-shaped channel, the product travels along a curved path. During the journey, due to factors such as speed differences in the conveyor belt holding the product or other reasons, the product may wrinkle or deform within the U-shaped channel. If the product is folded further, the folding knife may get stuck or the product may break and leak fluff pulp.

[0005] Existing cleaning devices are insufficient for cleaning folding knives, resulting in product damage or inability to fold effectively.

[0006] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0007] Therefore, this utility model provides a folding system to solve the above-mentioned technical problems.

[0008] A folding system includes a U-shaped conveyor section for clamping and conveying products and folding devices disposed at the inlet and outlet of the U-shaped conveyor section. The U-shaped conveyor section further includes an opening located in the middle of the U-shaped conveyor section for discharging products from the U-shaped conveyor section. The folding device includes a folding blade assembly and a cleaning assembly. The folding blade assembly includes a blade portion rotatably disposed about a folding rotation axis. The cleaning assembly includes a pair of rotatably disposed cleaning rollers. The spacing between the pair of cleaning rollers in the direction along the folding rotation axis is less than the thickness of the blade portion.

[0009] The upstream of the U-shaped conveying section includes a front conveying section, and the downstream of the U-shaped conveying section includes a rear conveying section. The folding system includes a conveying device for forming the U-shaped conveying section, the front conveying section, and the rear conveying section. The conveying device includes a first conveyor belt, a second conveyor belt, a third conveyor belt, a fourth conveyor belt, a fifth conveyor belt, and a sixth conveyor belt. The second conveyor belt includes a second front conveying section, a second middle conveying section, and a second rear conveying section. The fourth conveyor belt includes a fourth front conveying section and a fourth rear conveying section. The sixth conveyor belt includes a sixth front conveying section and a sixth rear conveying section. The fourth rear conveying section is spaced apart from the second front conveying section to form the U-shaped front conveying section. The first conveyor belt includes a first conveying section spaced apart from the second middle conveying section, and the first conveying section and the second middle conveying section form the U-shaped middle conveying section. The second rear conveying section is spaced apart from the sixth front conveying section to form the U-shaped rear conveying section.

[0010] The first conveying section and the sixth conveying front section are separated by a gap, which forms the opening.

[0011] The first conveying section includes a horizontal conveying section, a forward inclined conveying section located upstream of the horizontal conveying section, and a backward inclined conveying section located downstream of the horizontal conveying section. The backward inclined conveying section includes an end point, which is adjustable to a first position or a second position.

[0012] The sixth conveying section includes a head end. When the tail end is in the first position, the tail end is correspondingly set to the head end, and the gap between the tail end and the head end is less than the thickness of the product. When the tail end is in the second position, the tail end is located outside the head end, and the opening is greater than the thickness of the product.

[0013] The first conveyor belt is mounted on a first conveying assembly, which includes a first support. Several idlers and drive rollers are mounted on the first support. The first conveyor belt is wrapped around the idlers and drive rollers. The drive rollers include a drive rotation axis. The first support is configured to be adjustable around the drive rotation axis.

[0014] The folding knife assembly includes a first folding knife and a second folding knife. The first folding knife includes a first blade portion 4111, which is configured to rotate about a blade plate rotation axis. During rotation, the first blade portion forms a first rotation plane. The second folding knife includes a second blade portion, which is configured to rotate about another blade plate rotation axis. During rotation, the second blade portion forms a second rotation plane. The blade plate rotation axis of the first blade portion is parallel to the blade plate rotation axis of the second blade portion. Simultaneously, the first rotation plane and the second rotation plane are coplanar.

[0015] The cleaning assembly includes a first roller group for cleaning the first cutting edge and a second roller group for cleaning the second cutting edge. The first roller group includes a first lower cleaning roller and a first upper cleaning roller, which are staggered. The second roller group includes a second lower cleaning roller and a second upper cleaning roller, which are parallel to each other.

[0016] The first lower cleaning roller is configured to rotate about a first rotation axis, the first upper cleaning roller is configured to rotate about a second rotation axis, the first rotation axis and the second rotation axis are arranged parallel to each other, the second lower cleaning roller is configured to rotate about a third rotation axis, and the second upper cleaning roller is configured to rotate about a fourth rotation axis, the third rotation axis and the fourth rotation axis are arranged parallel to each other, and the projections of the first rotation axis and the third rotation axis on the first rotation plane are perpendicular to each other.

[0017] The first lower cleaning roller, the first upper cleaning roller, the second lower cleaning roller, and the second upper cleaning roller include a covering body, which is a sponge.

[0018] Beneficial Effects: This utility model provides a folding system, including a U-shaped conveyor section for clamping and conveying products and folding devices disposed at the inlet and outlet of the U-shaped conveyor section. The U-shaped conveyor section also includes an opening located in the middle of the U-shaped conveyor section for discharging products from the U-shaped conveyor section. The folding device includes a folding blade assembly and a cleaning assembly. The folding blade assembly includes a blade that is rotatably disposed around the folding rotation axis. The cleaning assembly includes a pair of rotatably disposed cleaning rollers. The spacing between the pair of cleaning rollers along the folding rotation axis is less than the thickness of the blade. Through the above arrangement, on the one hand, when a product is defective in the middle section, the front section, or the upstream position of the U-shaped conveyor, it can be discharged through the opening, thereby avoiding the product from entering the secondary folding position, which could cause damage to the folding device or product breakage leading to dust and other problems. On the other hand, the cleaning assembly can clean the blade, further preventing product damage during the folding process. Attached Figure Description

[0019] Figure 1 A schematic diagram of the folding system according to an embodiment of this utility model;

[0020] Figure 2 for Figure 1 A simplified diagram of the product movement path in the image;

[0021] Figure 3 Enlarged schematic diagram of the first conveying component.

[0022] Figure 4 for Figure 1 A schematic diagram of the folding device in the diagram;

[0023] Figure 5 for Figure 4 Schematic diagram of the first folding blade and the first roller group;

[0024] Figure 6 for Figure 4 Schematic diagram of the second folding blade and the first roller group;

[0025] Figure 7 for Figure 6 Enlarged diagram of area A in the middle;

[0026] Figure 8 for Figure 4 Top view of the folding knife assembly;

[0027] Component descriptions in the diagram:

[0028] U-shaped conveyor section 11; U-shaped conveyor front section 111; U-shaped conveyor middle section 112; U-shaped conveyor rear section 113; opening 1131; front conveyor section 12; rear conveyor section 13; first conveyor belt 210; first conveyor section 2100; front inclined conveyor section 2101; horizontal conveyor section 2102; rear inclined conveyor section 2103; first support 211; drive roller 212; drive rotation axis 213; actuating device 214; second conveyor belt 220; second conveyor front section 221; second conveyor middle section 222; second conveyor rear section 223; third conveyor belt 230; fourth conveyor belt 240; fourth conveyor front section 241; fourth conveyor rear section 242; fifth conveyor belt 250; sixth conveyor belt 260; sixth conveyor front section 241 Sixth conveyor section 242; Folding device 40; Folding knife assembly 41; First folding knife 411; First blade 4111; Knife plate rotation axis 4112, 4122; First rotation plane 4113; Second folding knife 412; Second blade 4121; Second rotation plane 4123; Cleaning assembly 42; First roller group 421; First lower cleaning roller 4211; First upper cleaning roller 4212; First rotation axis 4213; Second rotation axis 4214; Second roller group 422; Second lower cleaning roller 4221; Second upper cleaning roller 4222; Third rotation axis 4223; Fourth rotation axis 4224; Central shaft 4225; Base cylinder 4226; Covering body 4227; Rotating frame 4228; Protective assembly 43. Detailed Implementation

[0029] Please refer to the reference. Figures 1-2 This utility model provides a folding system for conveying and folding products. The products can be specific disposable hygiene products such as mattresses, tissues, sanitary napkins, and diapers. Of course, the products can also be other products that are generally sheet-shaped and can be bent.

[0030] The folding system includes a U-shaped conveyor section 11 and folding devices 40 disposed at the inlet and outlet of the U-shaped conveyor section 11.

[0031] The U-shaped conveying section 11 is configured to clamp and convey products. The U-shaped conveying section 11 includes a U-shaped front conveying section 111, a U-shaped middle conveying section 112, and a U-shaped rear conveying section 113. In this embodiment, the U-shaped conveying section 11 clamps and conveys products from right to left. The U-shaped front conveying section 111 is located upstream of the U-shaped conveying section 11 and conveys products from the upper right to the lower left. The U-shaped middle conveying section 112 is located in the middle of the U-shaped conveying section 11 and conveys products from right to left. The U-shaped rear conveying section 113 is located downstream of the U-shaped conveying section 11 and conveys products from the lower right to the upper left.

[0032] In addition, in this embodiment, the upstream of the U-shaped conveying section 11 includes a front conveying section 12, and the downstream of the U-shaped conveying section 11 includes a rear conveying section 13. The front conveying section 12 is used to convey the product into the U-shaped conveying section 11, and the rear conveying section 13 is used to convey the folded product downstream after it is output from the U-shaped conveying section 11.

[0033] Specifically, the folding system includes a conveying device for forming a U-shaped conveying section 11, a front conveying section 12, and a rear conveying section 13. Specifically, the conveying device includes a first conveyor belt 210, a second conveyor belt 220, a third conveyor belt 230, a fourth conveyor belt 240, a fifth conveyor belt 250, and a sixth conveyor belt 260. The second conveyor belt 220 includes a second front conveying section 221, a second middle conveying section 222, and a second rear conveying section 223. The fourth conveyor belt 240 includes a fourth front conveying section 241 and a fourth rear conveying section 242. The sixth conveyor belt 260 includes a sixth front conveying section 241 and a sixth rear conveying section 242. The fourth rear conveying section 242 is arranged at an interval relative to the second front conveying section 221, forming a conveying channel. It can be understood that the conveying channel formed by the fourth rear conveying section 242 and the second front conveying section 221 is a U-shaped front conveying section 111. The first conveyor belt 210 includes a first conveying section 2100 arranged at an interval relative to the second middle conveying section 222, and the first conveying section 2100 and the second middle conveying section 222 form a conveying channel, which is a U-shaped middle conveying section 112. The second rear conveying section 223 is arranged at an interval relative to the sixth front conveying section 241, forming a conveying channel, which is a U-shaped rear conveying section 113.

[0034] It is understood that the third conveyor belt 230 includes a third conveying section, which is arranged at an interval relative to the fourth conveying front section 241 to form a first front conveying section 12, and the fifth conveyor belt 250 includes a fifth conveying section, which is arranged at an interval relative to the sixth conveying rear section 242 to form a rear conveying section 13.

[0035] The U-shaped conveyor section 11 further includes an opening 1131 located in the middle of the U-shaped conveyor section 11 for discharging products from the U-shaped conveyor section 11. Specifically, the first conveyor section 2100 includes a horizontal conveyor section 2102, a forward inclined conveyor section 2101 located upstream of the horizontal conveyor section 2102, and a backward inclined conveyor section 2103 located downstream of the horizontal conveyor section 2102. A gap is included between the backward inclined conveyor section 2103 and the sixth forward conveyor section 241, and the gap forms the opening 1131. More specifically, the backward inclined conveyor section 2103 includes an end, and the sixth forward conveyor section 241 includes a beginning. The backward inclined conveyor section 2103 is adjustable so that the end is located in a first position or a second position. When the end is in the first position, the end is positioned corresponding to the beginning end, and the gap between the end and the beginning end is less than the thickness of the product, so that the product can move downstream along the U-shaped conveyor section 113. When the end is in the second position, the end is located outside the beginning end, and the opening 1131 is greater than the thickness of the product, so that the product passing through the U-shaped conveyor middle section 112 is discharged from the opening 1131. In this case, when a product is defective in the U-shaped conveyor middle section 112, the U-shaped conveyor front section 111, or a position further upstream, it can be discharged through the opening 1131, thereby preventing the product from entering the secondary folding position, which could cause damage to the folding device 40 or damage to the product leading to dust and other problems.

[0036] Please refer to the following for further details. Figure 3 In this embodiment, the first conveyor belt 210 is disposed on a first conveying assembly, the first conveying assembly includes a first support 211, and a plurality of idlers and drive rollers 212 are disposed on the first support 211. The first conveyor belt 210 is wrapped around the idlers and drive rollers 212. The drive rollers 212 include a drive rotation axis 213. The first support 211 is configured to be adjustable around the drive rotation axis 213, thereby making the end adjustable.

[0037] In this embodiment, the first conveying assembly further includes an actuating device 214. One end of the actuating device 214 is connected to the first support 211, and the other end is fixed on the main frame. At the same time, the length of the actuating device 214 is adjustable, so that the first support 211 is adjustable around the drive rotation axis 213. Specifically, the actuating device 214 can be a cylinder, hydraulic cylinder, lead screw, etc.

[0038] Please refer to this as well. Figures 4-8 ,in, Figure 4 It shows Figure 1 The folding device 40 in the middle, Figure 5 It shows Figure 4 The first folding component in the middle, Figure 6 It shows Figure 4 The second folding component, Figure 7 It shows Figure 6 Enlarged diagram of area A in the middle; Figure 8 It shows Figure 4 Top view of the folding knife component 41.

[0039] The folding device 40 includes a folding blade assembly 41 and a cleaning assembly 42. The folding blade assembly 41 includes a blade that is rotatably disposed around the folding rotation axis. The cleaning assembly 42 includes a pair of rotatably disposed cleaning rollers. The distance between the pair of cleaning rollers in the direction along the folding rotation axis is less than the thickness of the blade. The cleaning assembly 42 cleans the upper and lower sides of the blade to reduce damage to the product during the folding process.

[0040] In this embodiment, the folding knife assembly 41 includes a first folding knife 411 and a second folding knife 412 disposed along the width direction of the product. The first folding knife 411 includes a first blade portion 4111, which is configured to rotate around a blade plate rotation axis 4112. During rotation, the first blade portion 4111 forms a first rotation plane 4113. The second folding knife 412 includes a second blade portion 4121, which is also configured to rotate around a blade plate rotation axis 4122. During rotation, the second blade portion 4121 forms a second rotation plane 4123. It can be understood that the blade plate rotation axis 4112 of the first blade portion 4111 is parallel to the blade plate rotation axis 4122 of the second blade portion 4121. At the same time, the first rotation plane 4113 and the second rotation plane 4123 are coplanar, so that the first folding knife 411 and the second folding knife 412 fold the same product along the same fold line.

[0041] The cleaning assembly 42 includes a first roller group 421 for cleaning the first blade portion 4111 and a second roller group 422 for cleaning the second blade portion 4121.

[0042] In this embodiment, the first roller group 421 includes a first lower cleaning roller 4211 and a first upper cleaning roller 4212. The first lower cleaning roller 4211 is configured to rotate about a first rotation axis 4213, while the first upper cleaning roller 4212 is configured to rotate about a second rotation axis 4214. The first rotation axis 4213 and the second rotation axis 4214 are arranged parallel to each other, and the first lower cleaning roller 4211 and the first upper cleaning roller 4212 are staggered.

[0043] The aforementioned misalignment specifically refers to the fact that the first rotation axis 4213 and the second rotation axis 4214 are respectively located on both sides of the first rotation plane 4113, and the first rotation axis 4213 and the second rotation axis 4214 are respectively located on both sides of the blade rotation axis 4112 of the first cutting edge 4111, so that the first lower cleaning roller 4211 and the second upper cleaning roller 4222 clean the two surfaces of the first cutting edge 4111 from the upper and lower sides respectively, and in a misaligned manner.

[0044] Additionally, the second roller group 422 includes a second lower cleaning roller 4221 and a second upper cleaning roller 4222. The second lower cleaning roller 4221 is configured to rotate about a third rotation axis 4223, while the second upper cleaning roller 4222 is configured to rotate about a fourth rotation axis 4224. The third rotation axis 4223 and the fourth rotation axis 4224 are arranged in parallel. Furthermore, the first lower cleaning roller 4211 and the first upper cleaning roller 4212 are arranged in parallel. Specifically, the parallel arrangement means that a virtual plane passes through the third rotation axis 4223 and the fourth rotation axis 4224, and the virtual plane is parallel to the blade rotation axis 4122 of the second cutting edge 4121.

[0045] Furthermore, the projections of the first rotation axis 4213 and the third rotation axis 4223 onto the first rotation plane 4113 are perpendicular. This arrangement can save installation space and avoid resonance between the first upper cleaning roller 4212, the first upper cleaning roller, the second lower cleaning roller, and the second upper cleaning roller 4222.

[0046] Furthermore, the distance between the first upper cleaning roller 4212 and the second upper cleaning roller 4222 along the direction of the first rotation axis 4213 is less than the thickness of the first blade 4111.

[0047] Please refer to this as well. Figure 7The second upper cleaning roller 4222 includes a central shaft 4225 and a base cylinder 4226 rotatably mounted on the central shaft 4225. A covering body 4227 is wrapped around the base cylinder 4226. The covering body 4227 is made of a soft material. In a preferred embodiment, the covering body 4227 can be a sponge. Firstly, the sponge is a soft elastomer that can quickly restore its shape after cleaning the blade. Secondly, the sponge can quickly absorb stains such as liquids. Thirdly, the sponge is relatively soft and will not easily damage the blade. It is understood that the structure of other cleaning rollers is the same as that of the second upper cleaning roller 4222, and will not be described in detail here.

[0048] Furthermore, a rotating frame 4228 is also included between the base cylinder 4226 and the central shaft 4225, so that the base cylinder 4226 and the covering body 4227 can rotate freely around the central shaft 4225, thereby facilitating the cleaning of the second blade 4121.

[0049] Furthermore, the protective component 43 includes a protective cover, which is fitted over the first blade portion 4111.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A folding system, comprising a U-shaped conveyor section for clamping and conveying products and folding devices disposed at the inlet and outlet of the U-shaped conveyor section, characterized in that, The U-shaped conveyor section further includes an opening located in the middle of the U-shaped conveyor section for discharging the product from the U-shaped conveyor section, and the folding device includes a folding knife assembly and a cleaning assembly, wherein the folding knife assembly includes a blade that is rotatably disposed about the folding rotation axis, and the cleaning assembly includes a pair of rotatably disposed cleaning rollers, the distance between the pair of cleaning rollers in the direction along the folding rotation axis being less than the thickness of the blade.

2. The folding system as described in claim 1, characterized in that, The upstream of the U-shaped conveying section includes a front conveying section, and the downstream of the U-shaped conveying section includes a rear conveying section. The folding system includes a conveying device for forming the U-shaped conveying section, the front conveying section, and the rear conveying section. The conveying device includes a first conveyor belt, a second conveyor belt, a third conveyor belt, a fourth conveyor belt, a fifth conveyor belt, and a sixth conveyor belt. The second conveyor belt includes a second front conveying section, a second middle conveying section, and a second rear conveying section. The fourth conveyor belt includes a fourth front conveying section and a fourth rear conveying section. The sixth conveyor belt includes a sixth front conveying section and a sixth rear conveying section. The fourth rear conveying section is spaced apart from the second front conveying section to form the U-shaped front conveying section. The first conveyor belt includes a first conveying section spaced apart from the second middle conveying section, and the first conveying section and the second middle conveying section form the U-shaped middle conveying section. The second rear conveying section is spaced apart from the sixth front conveying section to form the U-shaped rear conveying section.

3. The folding system as described in claim 2, characterized in that, The first conveying section and the sixth conveying front section include a gap, which forms the opening.

4. The folding system as described in claim 3, characterized in that, The first conveying section includes a horizontal conveying section, a forward inclined conveying section located upstream of the horizontal conveying section, and a backward inclined conveying section located downstream of the horizontal conveying section. The backward inclined conveying section includes an end point, which is adjustable to a first position or a second position.

5. The folding system as described in claim 4, characterized in that, The sixth conveying section includes a head end. When the tail end is in the first position, the tail end is correspondingly arranged with the head end, and the gap between the tail end and the head end is less than the thickness of the product. When the tail end is in the second position, the tail end is located outside the head end, and the opening is greater than the thickness of the product.

6. The folding system as described in claim 5, characterized in that, The first conveyor belt is mounted on a first conveying assembly, which includes a first support. Several idlers and drive rollers are mounted on the first support. The first conveyor belt is wrapped around the idlers and drive rollers. The drive rollers include a drive rotation axis. The first support is configured to be adjustable around the drive rotation axis.

7. The folding system as claimed in claim 6, characterized in that, The folding knife assembly includes a first folding knife and a second folding knife. The first folding knife includes a first blade portion configured to rotate about a blade plate rotation axis, and the first blade portion forms a first rotation plane during rotation. The second folding knife includes a second blade portion configured to rotate about another blade plate rotation axis, and the second blade portion forms a second rotation plane during rotation. The blade plate rotation axis of the first blade portion is parallel to the blade plate rotation axis of the second blade portion, and the first rotation plane and the second rotation plane are coplanar.

8. The folding system as claimed in claim 7, characterized in that, The cleaning assembly includes a first roller group for cleaning the first cutting edge and a second roller group for cleaning the second cutting edge. The first roller group includes a first lower cleaning roller and a first upper cleaning roller, which are staggered. The second roller group includes a second lower cleaning roller and a second upper cleaning roller, which are parallel to each other.

9. The folding system as described in claim 8, characterized in that, The first lower cleaning roller is configured to rotate about a first rotation axis, and the first upper cleaning roller is configured to rotate about a second rotation axis. The first rotation axis and the second rotation axis are arranged parallel to each other. The second lower cleaning roller is configured to rotate about a third rotation axis, and the second upper cleaning roller is configured to rotate about a fourth rotation axis. The third rotation axis and the fourth rotation axis are arranged parallel to each other. The projections of the first rotation axis and the third rotation axis on the first rotation plane are perpendicular.

10. The folding system as claimed in claim 8, characterized in that, The first lower cleaning roller, the first upper cleaning roller, the second lower cleaning roller, and the second upper cleaning roller all include a covering body, which is a sponge.

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