A sheet cutting apparatus

Abstract

The application discloses a sheet cutting device, which comprises a first roller, a second roller arranged in parallel with the first roller, one of the first roller and the second roller being a bottom roller and the other being a cutter roller, and a balancing device abutting against the first roller and arranged along a first direction, the first roller being located between the second roller and the balancing device, the first direction being perpendicular to the axial direction of the first roller and the second roller. The balancing device comprises a fixed support, a limiting wheel rotatably connected to the fixed support and configured to abut against the first roller, and a driving part connected to the fixed support and configured to drive the limiting wheel to move towards or away from the first roller. The balancing device applies pressure to the first roller to press the first roller and the second roller tightly, prevents the first roller from jumping during work and guarantees the cutting effect.

Description

Technical Field

[0001] This application relates to the field of disposable hygiene products technology, particularly to the fields of baby pull-up diapers, adult pull-up diapers, sanitary pants and disposable underwear, specifically a sheet cutting device. Background Technology

[0002] Existing shorts-style clothing items, such as baby / adult pull-up diapers, sanitary pants, and disposable underwear, typically have an elastic waistband made of an elastic composite sheet. This elastic composite sheet generally consists of an outer layer, an inner layer, and multiple elastic threads sandwiched between them. Because the elastic composite sheet has a multi-layered structure, it has poor breathability, making it easy for users to sweat and develop rashes, thus reducing their comfort.

[0003] To improve breathability, a new type of shorts-shaped garment has emerged. This garment features multiple slits along the elastic waistband, which stretch into openings when worn, allowing for heat dissipation and ventilation, thus enhancing user comfort.

[0004] The equipment for manufacturing the aforementioned novel shorts-style clothing includes a bottom roller and a cutting roller. The circumferential surface of the cutting roller has multiple patterned areas, and multiple cutting blades are provided within each patterned area. However, because the cutting of the elastic composite sheet by the cutting roller is discontinuous, the bottom roller is prone to jumping during operation, affecting the cutting effect. Utility Model Content

[0005] The purpose of this application is to provide a sheet cutting device to solve the problem of poor cutting effect caused by bottom roller jumping when cutting elastic composite sheets in related technologies.

[0006] To achieve the above objectives, this application adopts the following technical solution.

[0007] One embodiment of this application provides a sheet cutting device, the device comprising: a first roller; a second roller, arranged parallel to the first roller; the first roller being a bottom roller and the second roller being a cutting roller, or the first roller being a cutting roller and the second roller being a bottom roller; the first roller and the second roller being used for cutting sheet material; a balancing device abutting against the first roller and along a first direction, the first roller being located between the second roller and the balancing device, the first direction being perpendicular to the axial direction of the first roller and the second roller; the balancing device comprising: a fixed bracket; a limiting wheel rotatably connected to the fixed bracket relative to the fixed bracket, the limiting wheel being configured to abut against the first roller; and a driving unit connected to the fixed bracket, the driving unit being configured to drive the limiting wheel to move toward or away from the first roller.

[0008] In some possible implementations, the number of the limiting wheels is two, and the two limiting wheels are spaced apart along a second direction, which is perpendicular to the first direction and the axial direction.

[0009] In some possible implementations, the balancing device further includes: a limiting wheel fixing plate rotatably connected to the fixing bracket relative to the fixing bracket, wherein the limiting wheel is rotatably connected to the limiting wheel fixing plate relative to the limiting wheel fixing plate.

[0010] In some possible implementations, the fixed bracket includes a fixed main board and two extension plates, the two extension plates being axially spaced apart and fixed to the fixed main board, each extension plate having a first shaft hole, the first shaft holes of the two extension plates being axially opposite to each other; the balancing device further includes a first shaft passing through the first shaft hole on each extension plate, and the limiting wheel fixing plate being rotatably connected to the fixed bracket relative to the fixed bracket via the first shaft.

[0011] In some possible implementations, there are two limiting wheel fixing plates, which are axially spaced apart. Each limiting wheel fixing plate has a second shaft hole, and the second shaft holes of the two limiting wheel fixing plates are axially opposite to each other. The first shaft passes through the two second shaft holes. The balancing device also includes a second shaft that extends axially. Each limiting wheel fixing plate has a third shaft hole, and the third shaft holes of the two limiting wheel fixing plates are axially opposite to each other. The second shaft passes axially through the third shaft holes of the two limiting wheel fixing plates. The limiting wheel is rotatably connected to the two limiting wheel fixing plates via the second shaft.

[0012] In some possible implementations, there are two limiting wheels and two second shafts. Each limiting wheel fixing plate has two third shaft holes. Each third shaft hole of one of the two limiting wheel fixing plates is axially opposite to a third shaft hole of the other limiting wheel fixing plate. Each second shaft passes axially through the two oppositely arranged third shaft holes.

[0013] In some possible implementations, the drive unit includes: a cylinder including a cylinder body and a piston rod, the piston rod being movably connected to the cylinder body in a first direction; the balancing device further includes: a push plate fixed to the end of the piston rod away from the cylinder body; a relay plate fixed to the fixed bracket, the relay plate being located on the side of the push plate away from the piston rod in the first direction; and a buffer pad fixed to the push plate and the relay plate, the buffer pad being located between the push plate and the relay plate in the first direction.

[0014] In some possible implementations, along the axial direction, end cylinders are provided at both ends of the first roller or the second roller, the end cylinders being configured to press the first roller and the second roller together or to move the first roller away from the second roller.

[0015] In some possible implementations, the circumferential surface of the cutter roller is provided with at least one row of patterned areas; the row of patterned areas is provided with at least one patterned area; each patterned area is provided with multiple cutting blades, which are distributed at intervals along the circumferential and axial directions of the cutter roller.

[0016] In some possible implementations, the circumferential surface of the cutter roller is provided with two rows of patterned areas, the two rows of patterned areas are spaced apart along the axial direction, and the balancing device is located between the two rows of patterned areas along the axial direction.

[0017] This application provides a sheet cutting device, which includes: a first roller; a second roller arranged parallel to the first roller; the first roller being a bottom roller and the second roller being a cutting roller, or the first roller being a cutting roller and the second roller being a bottom roller; the first roller and the second roller being used for cutting sheet material; a balancing device abutting against the first roller and along a first direction, the first roller being located between the second roller and the balancing device, the first direction being perpendicular to the axial direction of the first roller and the second roller; the balancing device including: a fixed bracket; a limiting wheel rotatably connected to the fixed bracket relative to the fixed bracket, the limiting wheel being configured to abut against the first roller; and a driving unit connected to the fixed bracket, the driving unit being configured to drive the limiting wheel to move toward or away from the first roller.

[0018] This application uses a balancing device to apply pressure to the first roller, preventing it from jumping during operation and ensuring the cutting effect of the first and second rollers on the sheet. A limiting wheel rotatably abuts against the first roller relative to a fixed support, creating rolling friction between them, reducing wear on the first roller from the balancing device and extending its service life. The limiting wheel fixing plate is rotatably connected to the fixed support, allowing it to automatically adjust its angle relative to the fixed support during driving, ensuring contact between the limiting wheel and the surface of the first roller without manual calibration, thus improving production efficiency. Furthermore, by setting end cylinders at both ends of the first or second roller along the axial direction and a balancing device at the middle position, three-point clamping is achieved, ensuring uniform force on all positions of the first roller along the axial direction and preventing it from jumping. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the shorts-type clothing item according to an embodiment of this application in its unfolded state along the longitudinal plane. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the shorts-type clothing item according to an embodiment of this application in its unfolded state along the longitudinal plane. Figure 2 ,and Figure 2 The side panels, absorbent body, and leg elastics are concealed within.

[0022] Figure 3 for Figure 1 A schematic diagram of the cross-section under the SS section.

[0023] Figure 4 This is a three-dimensional schematic diagram of the shorts-type garment in the wearing state according to an embodiment of this application.

[0024] Figure 5 This is a side view of a sheet cutting device according to an embodiment of this application.

[0025] Figure 6 This is a front view schematic diagram of a sheet cutting device according to an embodiment of this application.

[0026] Figure 7 This is a schematic diagram of the planar state of the cutting roller of the sheet cutting device according to an embodiment of this application when it is unfolded in the circumferential direction.

[0027] Figure 8This is a side view of the cutting roller of a sheet cutting device according to an embodiment of this application.

[0028] Figure 9 This is a front view schematic diagram of the balancing device of the sheet cutting equipment according to an embodiment of this application.

[0029] Explanation of icon numbers: 1. Shorts-style clothing items; 10. Absorbent subject; 20. Outer garment; 20a. Leg seam; 21. Inner layer; 22. Outer layer; 23. Elastic seam; 24. Cutout; 25. Fold-over section; 26. Leg elastic band; 30. Side sealing section; 41. First adhesive layer; 42. Second adhesive layer; 43. Third adhesive layer; 44. Fourth adhesive layer; 100. Balancing device; 110. Cylinder bracket; 120. Cylinder; 121. Cylinder body; 122. Piston rod; 123. Push plate; 130. Cushioning pad; 140. Repeater board; 150. Fixed bracket; 151. First shaft; 152. Fixed main board; 153. Extension plate; 154. First shaft hole; 160. Limit wheel fixing plate; 161. Second shaft; 162. Second shaft hole; 163. Third shaft hole; 170. Limit wheel; 200. First roller; 210. End bearing; 220. Support sleeve; 230. End cylinder; 231. Connecting part; 300. Second roller; 301. Base; 302. Gap; 303. First patterned area row; 304. Second patterned area row; 310. First patterned area; 311. First cutting edge; 320. Second patterned area; 321. Second cutting edge; B1. Front waist; B2. Back; B3. Crotch; FR. Front part; BE. Back part. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] refer to Figures 1 to 3As shown, the shorts-type garment 1 includes an outer body 20 and an absorbent body 10. In its unfolded state, the shorts-type garment 1 has mutually orthogonal longitudinal, transverse, and thickness directions. The side in contact with the human body in the thickness direction is the skin side, and the side away from the human skin is the non-skin side. The shorts-type garment 1 includes a front portion FR and a back portion BE.

[0032] like Figure 1 As shown, along the longitudinal direction, the outer garment 20 has a front waist portion B1 disposed on the abdominal side of the wearer, a back portion B2 disposed on the back side of the wearer, and a crotch portion B3 disposed between the front waist portion B1 and the back portion B2. The front waist portion B1 is located at the front portion FR of the shorts-type garment 1, and the back portion B2 is located at the rear portion BE of the shorts-type garment 1. An absorbent body 10 is disposed on the inner surface of the outer garment 20, with a portion of the absorbent body 10 located at the front portion FR of the shorts-type garment 1 and another portion located at the rear portion BE of the shorts-type garment 1. The absorbent body 10 extends from the front waist portion B1 through the crotch portion B3 to the back portion B2.

[0033] like Figure 3 As shown, along the thickness direction, the outer body 20 includes an outer layer 21 and an inner layer 22, which are disposed at least in the front waist portion B1 and the back portion B2. Longitudinally, the outer layer 21 and the inner layer 22 extend from the front waist portion B1 through the crotch portion B3 to the back portion B2. The outer layer 21 is folded towards the absorbent body 10 to form a folded portion 25, which is at least fixed to the inner surface of the inner layer 22. The outer body 20 also includes a first adhesive layer 41, a second adhesive layer 42, a third adhesive layer 43, and a fourth adhesive layer 44. The first adhesive layer 41 is used to fix the outer layer 21 and the inner layer 22 together. The surface of the elastic thread 23 is coated with adhesive to fix the elastic thread 23 between the outer layer 21 and the inner layer 22. The second adhesive layer 42 is used to fix the leg elastic band 26. The third adhesive layer 43 is used to fix the absorbent body 10 to the inner surface of the outer garment 20. The fourth adhesive layer 44 is used to fix the folded part 25 to the inner surface of the inner layer 22. The outer garment 20 forms a leg circumference line 20a at the crotch B3, and has side closures 30 on both sides of the front waist B1 and the back B2, so that the shorts-type garment forms a pant-like shape with one waist opening and two leg openings. Specifically, the outer garment 20 is folded longitudinally, and the two side edges of the front waist B1 and the back B2 join together to form the side closures 30, so that the shorts-type garment forms a waist opening and two leg openings. Along the longitudinal direction, multiple elastic lines 23 extending laterally are arranged between the outer layer 21 and the inner layer 22 in the front waist section B1 and the rear back section B2, wherein the elastic lines 23 are spaced apart along the longitudinal direction. That is, the outer body 20 is formed by processing elastic composite sheet material.

[0034] refer to Figure 2 and combined Figure 1 As shown, the front waist region B1 has an upper waist area B11 and a lower waist area B12, and the rear back region B2 has an upper back area B21 and a lower back area B22. Multiple slits 24 are provided in the lower waist area B12 and the lower back area B22, spaced laterally, and the slits 24 correspond longitudinally to the positions of the elastic lines 23. Specifically, longitudinally, the lower waist area B12 and the lower back area B22 are located between the upper waist area B11 and the upper back area B21. (Continue referring to...) Figure 2 Along the horizontal direction, the right side of the lower waist area B12 (with Figure 2 (The view shown is for reference) There are multiple cuts 24a arranged horizontally at intervals, multiple cuts 24b arranged horizontally at intervals on the left side of the lower waist area B12, multiple cuts 24c arranged horizontally at intervals on the right side of the lower back area B22, and multiple cuts 24d arranged horizontally at intervals on the left side of the lower back area B22, and all cuts 24 correspond to the position of the elastic line 23 in the longitudinal direction.

[0035] refer to Figure 4 and combined Figures 1 to 3 When the wearer is wearing shorts-type garment 1, the cut 24 is affected by the elastic composite sheet along the waist direction (i.e., Figure 1 and Figure 2 The horizontal direction of the hole is stretched into a perforation to achieve heat dissipation and breathability, thereby improving the user's comfort when wearing it. For example, the perforation in the embodiment of this application is rhomboid, but it is not limited to this. In other possible embodiments, the perforation can also be triangular, circular, rectangular, pentagonal, hexagonal or other polygonal shapes.

[0036] In order to form a cut 24 on the elastic composite sheet of the above-mentioned shorts-type clothing item 1, it is necessary to use a sheet cutting device to cut the elastic composite sheet.

[0037] The aforementioned sheet cutting equipment includes a bottom roller and a cutting roller, which are arranged parallel to each other along the axial direction and rotate in opposite directions. A gap exists between the bottom roller and the cutting roller to allow the elastic composite sheet to pass through. Along the axial direction, a cylinder is provided at each end of the bottom roller, which is used to press the bottom roller and the cutting roller together during sheet cutting. The circumferential surface of the cutting roller has multiple patterned areas, which are spaced apart along the circumferential direction of the cutting roller. These patterned areas correspond to the elastic waist area of ​​the elastic composite sheet. Each patterned area has multiple cutting blades spaced apart along the circumference and axial direction, protruding from the circumferential surface of the base of the cutting roller. When the patterned area of ​​the cutting roller comes into contact with the bottom roller, the cutting blades of the patterned area cut along the corresponding elastic lines of the elastic composite sheet, forming multiple cuts on the elastic composite sheet.

[0038] However, since multiple patterned areas are distributed at intervals along the circumference of the cutting roller on the circumferential surface, the cutting of the elastic composite sheet by the cutting roller is discontinuous during operation. Furthermore, because the bottom roller and the cutting roller are in a pressed state during operation, and the cutting edge protrudes from the circumferential surface of the base of the cutting roller, the bottom roller jumps during operation, affecting the cutting effect. For example, it may cause problems such as offset of the cut position or unsatisfactory cut shape, thus affecting product quality.

[0039] To address the above issues, this application provides a sheet cutting device. By incorporating a balancing device, pressure is applied to the first roller towards the second roller to press the two rollers together, thereby preventing the first roller from jumping during operation. The balancing device includes a fixed bracket, a limiting wheel, and a drive unit. The limiting wheel is rotatably connected to the fixed bracket relative to it. The drive unit drives the limiting wheel to move towards and abut against the first roller. The rolling friction between the limiting wheel and the first roller reduces wear on the first roller while applying pressure. Furthermore, the balancing device is positioned at the midpoint of the first shaft along its axial direction and cooperates with end cylinders located at both ends of the first or second roller to form a three-point clamping effect, further improving the clamping effect and preventing the first roller from jumping.

[0040] The sheet cutting equipment of this application will now be described in detail with reference to the accompanying drawings.

[0041] refer to Figure 5 and Figure 6 One embodiment of this application provides a sheet cutting device, which includes: a balancing device 100, a first roller 200, and a second roller 300.

[0042] To facilitate a detailed description of the specific structure of the sheet cutting equipment, the following definitions apply: axial direction X, first direction Z, and second direction Y. Axis X refers to the axis of the first roller 200 and the second roller 300. Both first direction Z and second direction Y are perpendicular to axis X, and they are mutually perpendicular. It is understood that this perpendicularity can be absolute (i.e., the angle between each direction is 90°) or approximately perpendicular (i.e., the angle between each direction is 87°, 88°, or 89°, etc.).

[0043] For example, refer to Figure 6 Along the first direction Z, the first roller 200 is located between the balancing device 100 and the second roller 300. Along the first direction Z, there is a gap 302 between the first roller 200 and the second roller 300 that allows the elastic composite sheet to pass through. During operation, along the first direction Z, the balancing device 100 applies pressure to the first roller 200 toward the second roller 300 to press the first roller 200 and the second roller 300 together, thereby preventing the first roller 200 from jumping during operation.

[0044] refer to Figure 5 and Figure 6 The first roller 200 and the second roller 300 are arranged parallel to each other along the axial direction X and rotate in opposite directions. For example, as shown... Figure 5 As shown, the first roller 200 rotates clockwise in the direction R1, and the second roller 300 rotates counterclockwise in the direction R2. However, it is not limited to this. In other possible embodiments, the first roller 200 may rotate counterclockwise, and the second roller 300 may rotate clockwise.

[0045] In the embodiments of this application, the first roller 200 is a bottom roller, and the second roller 300 is a cutting roller.

[0046] refer to Figure 7 and Figure 8 , Figure 7 This is a planar unfolded schematic diagram of the circumferential direction R of the second roller 300. Figure 8 This is a side view of the second roller 300. It should be noted that the lateral direction of the shorts-type garment 1 corresponds to the circumferential direction R of the second roller 300, and the longitudinal direction of the shorts-type garment 1 corresponds to the axial direction X of the second roller 300.

[0047] In this embodiment, the circumferential surface of the second roller 300 is provided with multiple patterned areas. These patterned areas are spaced apart along the circumferential surface of the second roller 300, and each patterned area is provided with multiple cutting blades. These cutting blades are spaced apart along the circumferential direction R and the axial direction X of the second roller 300, respectively. The multiple cutting blades protrude from the circumferential surface of the base 301 of the second roller 300.

[0048] Specifically, in this embodiment, the circumferential surface of the second roller 300 is provided with a first patterned area row 303 and a second patterned area row 304. The first patterned area row 303 and the second patterned area row 304 are distributed at intervals along the axial direction X of the second roller 300. The first patterned area row 303 includes four first patterned areas 310, which are spaced at intervals along the circumferential direction R of the second roller 300. The second patterned area row 304 includes four second patterned areas 320, which are spaced at intervals along the circumferential direction R of the second roller 300.

[0049] It is understood that the embodiments of this application do not impose a special limitation on the number of pattern area columns, and can be adaptively adjusted according to the actual product requirements. For example, in other possible embodiments, the number of pattern area columns of the second roller 300 can also be 1, 3, 4, or 5, etc. Furthermore, the present application does not impose a special limitation on the number of pattern areas in each pattern area column. For example, in other possible embodiments, the number of pattern areas in each pattern area column can also be 1, 2, 3, or 5, etc.

[0050] Furthermore, each first flower-shaped region 310 is provided with a plurality of first cutting blades 311 respectively distributed at intervals along the circumferential direction R and the axial direction X. Each second flower-shaped region 320 is provided with a plurality of second cutting blades 321 distributed at intervals along the circumferential direction R and the axial direction X.

[0051] refer to Figure 7 During operation, the first roller 200 rotates clockwise in the direction R1 (to... Figure 5 (The shown view is for reference only), the second roller 300 rotates counterclockwise in the direction R2. The elastic composite sheet passes through the gap 302 between the first roller 200 and the second roller 300. When the elastic composite sheet passes between the first roller 200 and the second roller 300, the first cutting edge 311a of the first patterned area 310a of the first patterned area column 303 forms a cut in a corresponding area of ​​the elastic composite sheet (here, a cut 24a is formed on the right side of the lower waist area B12 of the outer body 20, as shown). Figure 2 As shown), the first cutting edge 311b of the first patterned area 310b of the first patterned area column 303 forms a cut in another area corresponding to the elastic composite sheet (here, a cut 24b is formed on the left side of the lower waist area B12 of the outer body 20, as shown). Figure 2 As shown), the second cutting edge 321a of the second pattern area 320a of the second pattern area column 304 forms a cut in another area corresponding to the elastic composite sheet (here, a cut 24c is formed on the right side of the lower back area B22 of the outer body 20, as shown). Figure 2 As shown), the second cutting edge 321b of the second pattern area 320b of the second pattern area column 304 forms a cut in another area corresponding to the elastic composite sheet (here, a cut 24d is formed on the left side of the lower back area B22 of the outer body 20, as shown). Figure 2 (As shown). These cuts are spaced apart along the transverse direction of the elastic composite sheet (corresponding to the circumferential R of the second roller 300) and along the longitudinal direction of the elastic composite sheet (corresponding to the axial direction X of the second roller 300) to the position of the elastic line 23.

[0052] For example, in this embodiment of the application, the number of balancing devices 100 is one, and along the axial direction X, one balancing device 100 is located between the first pattern area column 303 and the second pattern area column 304. This configuration allows the balancing device 100 to apply pressure to the area between corresponding positions of the first roller 200 in the two pattern area columns to balance the uneven force generated by the second roller 300 on the first roller 200 during the cutting process, thereby suppressing the jumping of the first roller 200. Specifically, along the axial direction X, the balancing device 100 is located approximately at the middle position of the first roller 200. For example, the balancing device 100 can be located at the halfway point of the first roller 200 along the axial direction X, or it can be located slightly to the left or right of the halfway point.

[0053] Exemplarily, in other possible embodiments, the number of balancing devices 100 is the same as the number of pattern area columns, and each balancing device 100 corresponds to one pattern area column along the first direction Z. It should be noted that "corresponds" here means that the balancing device 100 is positioned relative to the pattern area column along the first direction Z, not that they are in direct contact. This is because, in the case where the first roller 200 is the bottom roller and the second roller 300 is the cutter roller, the first roller 200 is located between the balancing device 100 and the second roller 300, and the balancing device 100 acts directly on the first roller 200, not on the pattern area columns on the second roller 300.

[0054] For example, when the second roller 300 has only one row of patterned areas, a balancing device 100 is correspondingly provided, which corresponds to the row of patterned areas along the first direction Z. As another example, when the second roller 300 has two rows of patterned areas, two balancing devices 100 are correspondingly provided, each of the two balancing devices 100 corresponding to one row of patterned areas along the first direction Z. As yet another example, when the second roller 300 has three rows of patterned areas, three balancing devices 100 are correspondingly provided, each of the three balancing devices 100 corresponding to one row of patterned areas along the first direction Z. This configuration ensures that during cutting, the first roller 200 is pressed by the balancing device 100 at the corresponding position, thereby guaranteeing a good cutting effect for each patterned area. In particular, when the second roller 300 has multiple flower pattern area columns and the spacing between each flower pattern area is large, the above configuration can better prevent the first roller 200 from jumping at various positions.

[0055] Exemplarily, in some other possible embodiments, the first roller 200 is a cutting roller, and the second roller 300 is a bottom roller. There is one balancing device 100, located along the axial direction X between the first patterned area column 303 and the second patterned area column 304. This configuration allows the balancing device 100 to apply pressure to the area between the two patterned area columns of the first roller 200 to balance the uneven force exerted on the first roller 200 by the second roller 300 during cutting, thereby suppressing the bounce of the first roller 200. Specifically, along the axial direction X, the balancing device 100 is located approximately at the middle position of the first roller 200. Exemplarily, the balancing device 100 may be located at the halfway point of the first roller 200 along the axial direction X, or it may be located slightly to the left or right of the halfway point.

[0056] The specific structure of the balancing device 100 will be described in detail below with reference to the accompanying drawings.

[0057] refer to Figure 5 and Figure 6The balancing device 100 may include a drive unit, a fixed bracket 150, and a limiting wheel 170. The drive unit is connected to the fixed bracket 150. The limiting wheel 170 is rotatably connected to the fixed bracket 150 and is configured to abut against the first roller 200. The drive unit is configured to drive the limiting wheel 170 toward the first roller 200 so that the limiting wheel 170 abuts against the first roller 200, thereby pressing the first roller 200 and the second roller 300 together when cutting the sheet, suppressing the jump of the first roller 200, or to drive the limiting wheel 170 away from the first roller 200 for equipment shutdown or maintenance.

[0058] refer to Figure 5 In this embodiment, the drive unit includes a cylinder 120. The cylinder 120 includes a cylinder body 121, a piston rod 122, and a push plate 123. One end of the piston rod 122 is movably connected to the cylinder body 121 in a first direction Z, and the other end of the piston rod 122 is fixedly connected to the push plate 123.

[0059] In this embodiment, the balancing device 100 further includes a cylinder bracket 110 for mounting and fixing the cylinder body 121. In other embodiments, the cylinder 120 may also be directly fixed to the frame of the sheet cutting equipment.

[0060] In this embodiment, a cylinder 120 is used to drive the first roller 200, but it is not limited to this. In other possible implementations, a hydraulic cylinder, a motor, or other means may be used to drive the first roller 200 to move along the first direction Z.

[0061] Continue to refer to Figures 5 to 6 The balancing device 100 also includes a relay plate 140 and a buffer pad 130. Along the first direction Z, the relay plate 140 is located on the side of the push plate 123 away from the piston rod 122. The relay plate 140 is fixedly connected to the fixed bracket 150. Along the first direction Z, the buffer pad 130 is located between the push plate 123 and the relay plate 140. The push plate 123, the buffer pad 130, and the relay plate 140 can be fixedly connected by means of, for example, bolts. The buffer pad 130 is used to reduce the impact of the cylinder 120 on the first roller 200, thereby protecting the first roller 200. During operation, when the cylinder 120 drives the limit wheel 170 to move towards the first roller 200, the buffer pad 130 can absorb part of the impact force, making the contact process between the limit wheel 170 and the first roller 200 smoother. It should be noted that in this embodiment, the buffer pad 130 is made of rubber, such as polyurethane rubber. In other embodiments, the material of the cushioning pad 130 can also be other materials that can provide cushioning and have a certain degree of hardness, such as silicone rubber, natural rubber, etc.

[0062] Continue to refer to Figures 5 to 9In this embodiment, the fixing bracket 150 includes a fixing main board 152 and two extension plates 153. The fixing main board 152 can be fixed to the relay board 140 by means of, for example, bolts. Specifically, along the first direction Z, the fixing main board 152 is located on the side of the relay board 140 away from the buffer pad 130. The two extension plates 153 can be fixed to the fixing main board 152 by means of, for example, bolts. Along the first direction Z, the two extension plates 153 are located on the side of the fixing main board 152 away from the relay board 140. Along the axial direction X, the two extension plates 153 are located at opposite ends of the fixing main board 152, and the two extension plates 153 are arranged opposite each other along the axial direction X. Further, each extension plate 153 is provided with a first shaft hole 154. The first shaft holes 154 of the two extension plates 153 are arranged opposite each other along the axial direction X. The first shaft hole 154 is used to install a first shaft 151.

[0063] Continue to refer to Figures 5 to 9 As shown, the balancing device 100 also includes a limiting wheel fixing plate 160, which is rotatably connected to the fixed bracket 150 relative to the fixed bracket 150. A limiting wheel 170 is rotatably connected to the limiting wheel fixing plate 160 relative to the limiting wheel fixing plate 160. In this embodiment, there are two limiting wheel fixing plates 160, spaced apart along the axial direction X. Each limiting wheel fixing plate 160 has a second shaft hole 162 for mounting a first shaft 151. The second shaft holes 162 of the two limiting wheel fixing plates 160 are arranged opposite each other along the axial direction X. Furthermore, each limiting wheel fixing plate 160 may also have two third shaft holes 163. The second shaft hole 162 and the two third shaft holes 163 of each limiting wheel fixing plate 160 are located at both ends of the limiting wheel fixing plate 160 along the first direction Z. Furthermore, the two third shaft holes 163 of each limiting wheel fixing plate 160 are spaced apart along the second direction Y. In other words, the second shaft hole 162 and the two third shaft holes 163 of each limiting wheel fixing plate 160 are arranged in a "triangular" pattern. The third shaft hole 163 of one of the two limiting wheel fixing plates 160 is positioned opposite to the third shaft hole 163 of the other limiting wheel fixing plate 160 along the axial direction X. This arrangement facilitates the installation of the second shaft 161 and ensures that the two limiting wheels 170 can be spaced apart along the second direction Y.

[0064] Continue to refer to Figures 5 to 9The balancing device 100 also includes a first shaft 151 and a second shaft 161. The first shaft 151 is used to rotatably connect the limiting wheel fixing plate 160 to the fixed bracket 150. Specifically, along the axial direction X, the first shaft 151 passes sequentially through the first shaft hole 154 of one of the two extension plates 153, the second shaft hole 162 of the two limiting wheel fixing plates 160, and the first shaft hole 154 of the other of the two extension plates 153, so that the two limiting wheel fixing plates 160 are rotatably connected to the fixed bracket 150 relative to the fixed bracket 150. After the two limiting wheel fixing plates 160 are connected to the fixed bracket 150 by the first shaft 151, the two limiting wheel fixing plates 160 can rotate relative to the fixed bracket 150 around the first shaft 151, so that the limiting wheel fixing plates 160 can adjust their angle during the process of the cylinder 120 driving the limiting wheel 170 to abut against the first roller 200, so that the limiting wheel 170 abuts against the surface of the first roller 200.

[0065] Furthermore, the second shaft 161 is used to rotatably connect the limiting wheel 170 to the limiting wheel fixing plate 160. In this embodiment, there are two second shafts 161. Each second shaft 161 extends along the axial direction X. Each second shaft 161 passes through two oppositely arranged third shaft holes 163 along the axial direction X. Specifically, each of the two second shafts 161 passes through two oppositely arranged third shaft holes 163 on the two limiting wheel fixing plates 160 along the axial direction X.

[0066] Continue to refer to Figures 5 to 9 There are two limiting wheels 170. Each limiting wheel 170 is connected to a second shaft 161. Each limiting wheel 170 is rotatably connected to the two limiting wheel fixing plates 160 via the corresponding second shaft 161. The two limiting wheels 170 are spaced apart along the second direction Y. When the balancing device 100 applies pressure to the first roller 200 toward the second roller 300, the two limiting wheels 170 abut against the first roller 200. Specifically, the two limiting wheels 170 abut against the first roller 200 from both sides along the second direction Y from the top of the first roller 200. During operation, when the first roller 200 rotates, the limiting wheels 170 rotate relative to the limiting wheel fixing plates 160 around the second shaft 161 under the action of rolling friction. In this way, the balancing device 100 of this embodiment does not affect the rotation of the first roller 200 while applying pressure to it. Furthermore, since the wear caused by rolling friction on the first roller 200 is relatively small, this application is able to avoid affecting the service life of the first roller 200.

[0067] Furthermore, in this embodiment of the application, by setting two limiting wheels 170, which are spaced apart along the second direction Y, the two limiting wheels 170 respectively abut against the first roller 200 from the top of the first roller 200 on both sides along the second direction Y, which can improve the stability of the contact between the limiting wheels 170 and the first roller 200.

[0068] Furthermore, in this embodiment, the limiting wheel fixing plate 160 is rotatably connected to the fixed bracket 150 via the first shaft 151. During the process of the cylinder 120 driving the limiting wheel 170 to abut against the first roller 200, when the two limiting wheels 170 are offset relative to the first roller 200 along the second direction Y, as long as one limiting wheel 170 abuts against the first roller 200, the reaction force generated by the first roller 200 on the first contacting limiting wheel 170 will guide the limiting wheel fixing plate 160 to rotate relative to the first shaft 151, so that the other limiting wheel 170 abuts against the first roller 200, thereby realizing the angle adjustment of the limiting wheel fixing plate 160. Moreover, this process does not require manual intervention, effectively simplifying the equipment debugging process.

[0069] refer to Figure 6 Along the axial direction X, an end bearing 210 is fitted at both ends of the first roller 200, and a support sleeve 220 is fitted over the end bearing 210. The outer ring of the end bearing 210 is fixed relative to the support sleeve 220. Along the first direction Z, an end cylinder 230 is respectively installed at the upper end of each of the two support sleeves 220. The piston rod end of each end cylinder 230 has a connecting part 231, the shape of which is adapted to the support sleeve 220 and connected to it. The end cylinders 230 are used to press the first roller 200 and the second roller 300 together when cutting the sheet. Specifically, during equipment operation, the end cylinders 230 drive the first roller 200 to press against the second roller 300, thus cutting the sheet; when the equipment is stopped or under maintenance, the end cylinders 230 drive the first roller 230 away from the second roller 300.

[0070] During operation (when cutting the sheet), the connecting portions 231 of the two end cylinders 230 apply pressure to the support sleeves 220 at both ends of the first roller 200 along the axial direction X, thereby applying pressure to the first roller 200 towards the second roller 300. Combined with the aforementioned balancing device 100, cylinders at both ends and the middle of the first roller 200 apply pressure towards the second roller 300 along the axial direction X, achieving three-point clamping to further improve the clamping effect. This ensures that the first roller 200 is subjected to uniform force at all positions along the axial direction X, preventing the first roller 200 from jumping during operation and guaranteeing the cutting effect. It should be noted that the end cylinders 230 in this application can be end cylinders from related technologies; their specific structures will not be described in detail here.

[0071] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The features, structures, or characteristics described above can be combined in any suitable manner in one or more embodiments.

[0072] It is understood that those skilled in the art, guided by the above embodiments, can combine various implementation methods in the above embodiments to obtain technical solutions with multiple implementation methods. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sheet cutting device, characterized in that, include: First roller; The second roller is arranged parallel to the first roller; the first roller is a bottom roller and the second roller is a cutting roller, or the first roller is a cutting roller and the second roller is a bottom roller; the first roller and the second roller are used to cut sheet material; A balancing device abuts against the first roller and is positioned along a first direction, the first roller being located between the second roller and the balancing device, the first direction being perpendicular to the axial direction of the first roller and the second roller, the balancing device comprising: Fixed bracket; A limiting wheel is rotatably connected to the fixed bracket relative to the fixed bracket, and the limiting wheel is configured to abut against the first roller; A drive unit, connected to the fixed bracket, is configured to drive the limiting wheel to move toward or away from the first roller.

2. The sheet cutting equipment as described in claim 1, characterized in that, The number of the limiting wheels is two, and the two limiting wheels are spaced apart along a second direction, which is perpendicular to the first direction and the axial direction.

3. The sheet cutting equipment as described in claim 1 or 2, characterized in that, The balancing device also includes: A limiting wheel fixing plate is rotatably connected to the fixing bracket relative to the fixing bracket, and the limiting wheel is rotatably connected to the limiting wheel fixing plate relative to the limiting wheel fixing plate.

4. The sheet cutting equipment as described in claim 3, characterized in that, The fixed bracket includes a fixed main board and two extension plates. The two extension plates are spaced apart along the axial direction and are fixed to the fixed main board. Each extension plate has a first shaft hole, and the first shaft holes of the two extension plates are arranged opposite each other along the axial direction. The balancing device further includes a first shaft passing through a first shaft hole in each of the extension plates, and the limiting wheel fixing plate is rotatably connected to the fixing bracket via the first shaft relative to the fixing bracket.

5. The sheet cutting equipment as described in claim 4, characterized in that, The number of the limiting wheel fixing plates is two, and the two limiting wheel fixing plates are spaced apart along the axial direction. Each limiting wheel fixing plate has a second shaft hole, and the second shaft holes of the two limiting wheel fixing plates are arranged opposite each other along the axial direction. The first shaft passes through the two second shaft holes. The balancing device further includes a second shaft extending axially. Each of the limiting wheel fixing plates has a third shaft hole. The third shaft holes of the two limiting wheel fixing plates are arranged opposite each other axially. The second shaft passes through the third shaft holes of the two limiting wheel fixing plates axially. The limiting wheel is connected to the two limiting wheel fixing plates in a rotatable manner relative to the two limiting wheel fixing plates via the second shaft.

6. The sheet cutting equipment as described in claim 5, characterized in that, The number of the limiting wheels is two, the number of the second shafts is two, and each of the limiting wheel fixing plates has two third shaft holes. Each third shaft hole of one of the two limiting wheel fixing plates is axially opposite to one third shaft hole of the other of the two limiting wheel fixing plates, and each second shaft passes through the two oppositely arranged third shaft holes axially.

7. The sheet cutting equipment as described in claim 1, characterized in that, The drive unit includes: A cylinder includes a cylinder body and a piston rod, the piston rod being movably connected to the cylinder body in a first direction; The balancing device also includes: A push plate is fixed to the end of the piston rod away from the cylinder body; The relay plate is fixed to the fixed bracket, and along the first direction, the relay plate is located on the side of the push plate away from the piston rod; A buffer pad is fixed to the push plate and the relay plate, and along the first direction, the buffer pad is located between the push plate and the relay plate.

8. The sheet cutting equipment as described in claim 1, characterized in that, Along the axial direction, each end of the first roller or the second roller is provided with an end cylinder, which is configured to press the first roller and the second roller together or to move the first roller away from the second roller.

9. The sheet cutting equipment as described in any one of claims 1, 2, 4-8, characterized in that, The circumferential surface of the cutter roller is provided with at least one row of flower-shaped areas; The flower pattern area column has at least one flower pattern area; Each of the flower-shaped areas is provided with multiple cutting blades, which are distributed at intervals along the circumference and axial direction of the cutting roller.

10. The sheet cutting equipment as described in claim 9, characterized in that, The circumferential surface of the cutter roller is provided with two rows of patterned areas, which are distributed at intervals along the axial direction, and the balancing device is located between the two rows of patterned areas.

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