Cutter roller and arc-shaped cutter device with same

Abstract

The utility model provides a cutter roller and an arc-shaped cutter device with the cutter roller. The cutter roller and the arc-shaped cutter device are used for cutting disposable hygienic products. The arc-shaped cutter device comprises a cutter roller and an anvil roller, and the anvil roller and the cutter roller are correspondingly arranged. A first bearing assembly of the cutter roller is located between the first supporting component and the roller body. A second support member of the anvil roller is located between the second bearing assembly and the anvil body, and the second support member radially abuts the first support member. When the second bearing assembly receives an external load force, the second support member transmits the load force to the first support member, and the anvil body deforms in a direction of a counter force opposite to the load force. The first bearing assembly is subjected to a reverse force opposite to the loading force, the roller body deforms in the direction of the reverse force, and the deformation amount of the cutter roller in the cutting process towards the reverse force can be changed by changing the position of the first bearing assembly relative to the first supporting component in the axial direction, so that the cutting quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of disposable sanitary product manufacturing equipment, and in particular to a type of equipment used in the fields of baby diapers / pull-up pants, adult diapers / pull-up pants, women's sanitary pants, etc., specifically a cutting roller and an arc-shaped cutting device equipped with the cutting roller. Background Art

[0002] The arc-shaped cutting device is an important device in the manufacturing equipment of disposable sanitary products. Taking pull-up pants (shorts-type absorbent products) as an example, it is used to cut out the leg openings on the outer body during the formation process of pull-up pants.

[0003] Chinese Patent Publication No. CN100556629C discloses a rotatable anvil and a rotary cutting unit having a rotatable anvil, and proposes that the load receiving element of the rotatable anvil is axially arranged between at least one anvil component and a corresponding load transfer component, and each load receiving element is connected to the shaft by a bearing. In the anvil structure, the upward load is transmitted to the adjacent element through the load transfer part, and the total upward load will be greater than the weight of the anvil and sufficient to cause the anvil to bend toward the rotary cutter, that is, the load causes the anvil to bend slightly upward. In addition, the load generates a force in the opposite direction on the surface of the rotating cutter roller, and the force is transmitted to the bearing to generate a downward force, so that the rotating cutter roller is also slightly bent upward.

[0004] When designing the anvil of the arc-shaped cutting device, a fixed shaft diameter is usually used to correspond to the cutting of products of different sizes. That is to say, when producing products of different sizes (changing sizes), the anvil does not need to be replaced, but only the rotating cutting roller is replaced. The rotating cutting roller should change the cutting diameter according to the different sizes of the products. Figure 1 The existing cutting device 9 shown in the figure has a rotating cutting roller 90 and anvil 91 that are both bent and deformed upward. When the diameter of the rotating cutting roller 90 is smaller than the axial diameter of the anvil 91, the upward deformation of the rotating cutting roller 90 will be greater than the upward deformation of the anvil 91 (exaggerated in the figure). Since the knife element 901 of the rotating cutting roller 90 is arranged in the middle area of ​​the roller, the rotating cutting roller 90 and the anvil 91 are at the maximum deformation in the middle position, so a certain gap will be generated, so that the knife element 901 of the rotating cutting roller 90 cannot reach the anvil 91, resulting in the rotating cutting roller 90 not being able to cut or continuously cutting the outer body material of the pull-on pants, which seriously affects the normal operation of the disposable sanitary product manufacturing equipment.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] One of the purposes of the present application is to provide a cutting roller to solve the problem of poor cutting in the prior art, such as the cutting roller failing to cut or not cutting disposable sanitary products (cutting objects) during cutting. The present application enables the cutting roller to deform in the direction of a reverse force opposite to the direction of an external load force during cutting; and the position of the first bearing assembly relative to the first supporting component in the axial direction is set by the radial dimension of the cutting blade of the cutting roller, so that the cutting roller obtains an ideal deformation amount in the direction of the reverse force during cutting, and finally ensures that the cutting blade is always in contact with the cutting object, thereby improving the cutting quality.

[0007] Another object of the present application is to provide an arc-shaped cutting knife device with a cutting knife roller, so as to solve the problem of poor cutting in the prior art, such as the cutting knife roller failing to cut or not cutting disposable sanitary products (cutting objects) during cutting. When cutting, the cutting knife roller and the anvil roller of the arc-shaped cutting knife device of the present application can both deform in the direction of a reverse force opposite to the direction of an external load force, and according to a preset deformation amount of the cutting knife roller, the position of the first bearing assembly in the cutting knife roller relative to the first supporting component in the axial direction is set to ensure that the cutting blade of the cutting knife roller can always contact the anvil roller, so as to ensure that the arc-shaped cutting knife device can accurately complete the cutting action, thereby greatly improving its working stability and the production efficiency of the equipment.

[0008] Other purposes and advantages of the present application can be further understood from the technical features disclosed in the present application.

[0009] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: a cutting roller, comprising: a core shaft; a roller body, having an outer peripheral surface and roller end surfaces on both sides, wherein the core shaft protrudes from the roller end surfaces on both sides and is used to drive the roller body to rotate; at least one cutting blade is arranged on the roller body and protrudes from the outer peripheral surface of the roller body; a pair of first supporting parts are arranged on the core shaft and are respectively located on both sides of the roller body to support the cutting roller; and a pair of first bearing assemblies are used to support the core shaft for the core shaft to rotate therein, and are respectively located between the corresponding first supporting parts and the roller body; wherein the roller body has a deformation in the direction of the reverse force when the first supporting part receives an external load force and the first bearing assembly is subjected to a reverse force opposite to the direction of the load force.

[0010] Furthermore, the cutting blade is independently manufactured and connected to the outer peripheral surface of the roller body, or the cutting blade and the roller body are integrally manufactured as an integral structure.

[0011] Furthermore, the radial dimension of the cutting blade is larger than the radial dimension of the outer peripheral surface of the roller body.

[0012] Furthermore, the first supporting component is a guide ring, and a radial dimension of the guide ring is larger than a radial dimension of an outer peripheral surface of the roller body.

[0013] Furthermore, the radial dimension of the guide ring is equal to the radial dimension of the cutting edge.

[0014] Furthermore, the cutting roller is mounted to a frame, and the first bearing assembly is connected to the frame. When the first supporting component receives the external load force, the first bearing assembly bears the reverse force from the frame in the opposite direction of the load force, so that the roller body is deformed in the direction of the reverse force.

[0015] Furthermore, the first bearing assembly is constructed to set its position relative to the first support component in the axial direction according to the radial size of the cutting blade. When the position of the first bearing assembly relative to the first support component in the axial direction changes, the deformation amount of the roller body toward the direction of the reverse force can be changed.

[0016] To achieve the above objectives, the technical solution adopted in the present application is: an arc-shaped cutter device for cutting disposable sanitary products, the arc-shaped cutter device comprises the cutter roller as described above, and an anvil roller, and the anvil roller is arranged below the cutter roller.

[0017] Furthermore, the anvil roller includes: an anvil shaft; an anvil body having an anvil surface and anvil end faces on both sides; wherein the anvil shaft protrudes from the anvil end faces on both sides of the anvil body; a pair of second bearing assemblies, respectively located on both sides of the anvil body, for supporting the anvil shaft for rotation therein; a pair of second supporting components, arranged on the anvil shaft and respectively located between the corresponding second bearing assemblies and the anvil body; wherein the second supporting component is radially abutted against the first supporting component, and when the second bearing assembly receives the external load force, the second supporting component transfers the load force to the first supporting component, and the anvil body deforms in the direction of the reverse force.

[0018] Furthermore, the arc cutter device comprises a frame, and the first bearing assembly of the cutter roller and the second bearing assembly of the anvil roller are both mounted to the frame.

[0019] Furthermore, the arc cutter device includes a load applying component for applying the external load force to the second bearing assembly. When the load force is transmitted to the first support component through the second support component, the frame generates a reverse force on the first bearing assembly that is opposite to the direction of the load force, causing the roller body to deform in the direction of the reverse force.

[0020] Furthermore, the load applying component is a cylinder, and the cylinder acts on the second bearing assembly to apply the external load force to the second bearing assembly.

[0021] Furthermore, the arc cutter device includes a driving part for connecting the cutter roller and driving the cutter roller to rotate, and the cutter roller drives the anvil roller to rotate towards each other, and the cutter blade abuts against the anvil body to perform cutting.

[0022] The beneficial effects of the cutting roller of the present application are:

[0023] The cutting roller provided by the present application arranges the first bearing assembly axially between the cutting blade and the first supporting component, so that the cutting roller can deform in the direction of the reverse force opposite to the direction of the external load force during cutting; and the position of the first bearing assembly relative to the first supporting component in the axial direction is set by the radial size of the cutting blade of the cutting roller, so that the cutting roller obtains an ideal deformation amount in the direction of the reverse force during cutting, and finally ensures that the cutting blade is always in contact with the cutting object, thereby improving the cutting quality.

[0024] The arc cutter device provided by the present application changes the load force transmission relationship of the relevant components in the cutter roller and the anvil roller by moving the first bearing assembly of the cutter roller from the outside of the first support component to the inside of the first support component, so that the cutter roller and the anvil roller can both deform in the direction of the reverse force opposite to the direction of the external load force during cutting, and change the position of the first bearing assembly relative to the first support component in the axial direction according to the preset deformation amount of the cutter roller, so as to obtain the ideal deformation amount of the cutter roller in the direction of the reverse force, so that the cutting blade of the cutter roller can always contact the anvil roller to achieve the purpose of precise cutting. In addition, by changing the layout of the components of the cutter roller and the anvil roller, the axial position of the first bearing assembly of the cutter roller can be changed accordingly according to the preset deformation amount, and the length of the cutter roller in the axial direction can be shortened, so that it is easier to control the cutting process of the entire arc cutter device, improve the cutting quality, simplify the device structure, and reduce the equipment volume. In the present application, compared with the original structure, the anvil roller structure moves the second bearing assembly from the inner side of the second supporting component to the outer side of the second supporting component, thereby lengthening the axial use length of the anvil body. In this way, the effective use length of the anvil body can be expanded within the limited device volume, and it can be suitable for cutting objects (products) of multiple sizes, and better support the cutting objects during the cutting process, which also improves the cutting quality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. In the following description, the same figure numbers represent the same parts. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of an existing cutting device, which shows the deformation curves of the rotating cutting roller and the anvil during the cutting process (the curves are exaggerated).

[0027] Figure 2 Schematic diagram of the shape change of disposable diapers during the processing process.

[0028] Figure 3 This is a schematic structural diagram of the arc cutter device provided in an embodiment of the present application, which mainly shows the positional relationship of the main parts of the cutter roller and the anvil roller.

[0029] Figure 4 for Figure 3 A side view of the curved cutter device is shown.

[0030] Figure 5 This is a schematic diagram of the structure of the arc cutter device provided in an embodiment of the present application, which mainly shows the load transfer diagram and deformation diagram of the cutter roller and the anvil roller during the cutting process.

[0031] Figure 6 This is a schematic diagram of the deformation of the cutting roller provided in an embodiment of the present application, which mainly shows the situation when the first bearing assembly is set in a certain position.

[0032] Figure 7 This is a schematic diagram of the deformation of the cutting roller provided in an embodiment of the present application, which mainly shows the situation when the first bearing assembly is set at another position.

[0033] Description of the accompanying drawings related to the embodiments of the present application:

[0034] Arc cutter device 100;

[0035] Cutter roller 1; anvil roller 2; load applying member 3; frame 4; mandrel 11; roller body 12;

[0036] Cutting blade 13; first support member 14; first bearing assembly 15; roller end surface 120; outer peripheral surface 121;

[0037] Anvil shaft 21; anvil body 22; second bearing assembly 23; second support member 24;

[0038] Radial dimensions D1, D2, D3; cutting diameter A; load force B; reverse force F;

[0039] Disposable diaper S; absorbent body S1; outer body S2; continuous sheet body W; leg opening K. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, which are used to illustrate specific embodiments that can be used to implement the present application, rather than all embodiments. The directional terms mentioned in this application, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only with reference to the directions in the drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application.

[0041] The cutting roller and the arc-shaped cutting device having the cutting roller provided in the embodiment of the present application are used to cut the arc-shaped openings required in the production process on disposable sanitary products.

[0042] In order to facilitate understanding of the design principles of the cutting roller and the arc-shaped cutting device of the present application, the disposable sanitary products (eg, disposable diapers) that need to be cut will be roughly described below.

[0043] Please refer to Figure 2 As shown, the disposable diaper S provided in the embodiment of the present application includes an absorbent body S1 and an outer body S2, wherein the absorbent body S1 is arranged inside the outer body S2, and the absorbent body S1 is the main structure for absorbing excrement. The continuous sheet W is a semi-finished product in the production process of the disposable diaper S, wherein the continuous sheet W has been compounded (or joined) with the absorbent body S1, and the absorbent body S1 is intermittently compounded on the continuous sheet W in the process direction.

[0044] The arc-shaped cutting device provided in the embodiment of the present application is used to cut the continuous sheet W of the disposable diaper S to form the leg opening K. More specifically, the arc-shaped cutting device is used to cut the leg opening K at the center position along the width direction perpendicular to the process direction on the outer body S2 between two adjacent absorbent bodies S1.

[0045] The process flow after the leg opening K is cut out by the arc-shaped cutting device is as follows: the continuous sheet W joined with the absorbent body S1 is folded in half along the width direction, so that the front abdominal part and the back part of the outer body S2 overlap; the side edges of the front abdominal part and the side edges of the back are welded to each other to make them in a closed state, thereby forming a final disposable diaper S with a waist opening and two leg openings in a trouser-like shape; finally, the continuous sheet W1 is cut along the width direction at the center position of the welded part, thereby forming a separate disposable diaper S.

[0046] Please refer to Figure 3 As shown, the arc cutter device 100 provided in the embodiment of the present application includes a cutter roller 1 and an anvil roller 2, and the anvil roller 2 is arranged corresponding to the cutter roller 1, wherein the cutter roller 1 can be arranged above the anvil roller 2, or the cutter roller 1 can be arranged below the anvil roller, which can be determined according to the actual situation. In this embodiment, the anvil roller 2 is arranged below the cutter roller 1, and the cutter roller 1 and the anvil roller 2 are arranged relative to each other and can rotate towards each other, as shown in FIG. Figure 4 As shown. Through the cooperation between the cutter roller 1 and the anvil roller 2, the leg openings K are formed on the continuous sheet W of the disposable diaper S, as shown. Figure 2 shown.

[0047] like Figure 3 As shown, the cutting roller 1 comprises: a core shaft 11 , a roller body 12 , at least one cutting blade 13 , a pair of first supporting members 14 , and a pair of first bearing assemblies 15 . The roller body 12 has an outer peripheral surface 121 and roller end surfaces 120 on both sides; the core shaft 11 protrudes from the roller end surfaces 120 on both sides of the roller body 12, and is used to drive the roller body 12 to rotate; the cutting blade 13 is arranged on the roller body 12 and protrudes from the outer peripheral surface 121 of the roller body 12; wherein the axial length of the roller body 12 is determined according to the width of the continuous sheet W of the disposable diaper S to be cut; the first support component 14 is arranged on the core shaft 11 and is respectively located on both sides of the roller body 12, and is used to support the cutting roller 1, wherein the position of the first support component 14 on both sides of the axial direction can be determined according to the width of the continuous sheet W of the disposable diaper S to be cut; the first bearing assembly 15 is used to support the core shaft 11 and allow the core shaft 11 to rotate therein, and the first bearing assembly 15 is respectively arranged between the corresponding first support component 14 and the roller body 12; wherein, please combine Figure 3 and Figure 5 As shown, the roller body 12 is deformed in the direction of the reverse force F when the first support component 14 receives the external load force B and the first bearing assembly 15 is subjected to the reverse force F in the opposite direction to the load force B. That is, when the first support component 14 receives the external load force B, the first bearing assembly 15 will be subjected to the reverse force F in the opposite direction to the load force B, and the roller body 12 is deformed in the direction of the reverse force F. In this embodiment, an example in which the anvil roller 2 is arranged below the cutter roller 1 is used for explanation. Under this arrangement structure, the external load force B is an upward force (the same below), and the reverse force F in the opposite direction to the load force B is a downward force (the same below), and the roller body 12 is deformed downward (the same below), as shown in FIG. Figure 5 The deformation curve of the roller body 12 shown by the dashed line (exaggerated) is only for explanation and does not represent the actual deformation size.

[0048] like Figure 3As shown, the anvil roller 2 comprises: an anvil shaft 21, an anvil body 22, a pair of second bearing assemblies 23, and a pair of second supporting members 24. The anvil body 22 extends along the axial direction of the anvil shaft 21, and has an anvil surface and anvil end faces on both sides; the anvil shaft 21 protrudes from the anvil end faces on both sides of the anvil body 22; the second bearing assemblies 23 are respectively located on both sides of the anvil body 22, and are used to support the anvil shaft 21 and allow the anvil shaft 21 to rotate therein; the second supporting members 24 are arranged on the anvil shaft 21, and are respectively located between the corresponding second bearing assemblies 23 and the anvil body 22.

[0049] The anvil shaft 21 is parallel to the core shaft 11, and the second support component 24 is radially abutted against the first support component 14. When the second bearing assembly 23 receives the external load force B, the second support component 24 transmits the load force B to the first support component 14, and the anvil body 22 deforms in the direction of the reverse force F (that is, the anvil body 22 deforms downward in this embodiment). Figure 5 The deformation curve of the anvil body 22 shown in the figure is indicated by a dotted line (exaggerated), and the deformation curve shown in the figure is only for illustration and is not an actual deformation size.

[0050] The arc-shaped cutting knife device 100 provided in the embodiment of the present application can solve the problem in the prior art that the cutting knife roller 1 cannot cut or cannot cut the continuous sheet W of the disposable sanitary product S during cutting. The arc-shaped cutting knife device 100 of the present application is designed so that the cutting knife roller 1 and the anvil roller 2 can both deform downward during cutting, and ensures that the cutting blade 13 of the cutting knife roller 1 can always contact the anvil roller 2, thereby accurately completing the cutting action, thereby greatly improving its working stability and the production efficiency of the equipment.

[0051] The following will be combined Figure 3 , Figure 4 , Figure 5 The detailed structure of the cutting roller 1 provided in the embodiment of the present application is further described.

[0052] In the cutting roller 1 provided in the embodiment of the present application, the roller body 12 extends along the axial direction of the core shaft 11, and the core shaft 11 coincides with the central axis of the roller body 12. The roller body 12 is arranged on the core shaft 11 or is made into an integral structure with the core shaft 11, and the core shaft 11 protrudes from the roller end faces 120 on both sides of the roller body 12. The core shaft 11 is connected to a driving part (not shown) to drive the core shaft 11 to rotate (or rotate), thereby driving the roller body 12 to rotate. The driving part may include a motor to provide power to drive the core shaft 11 to rotate; the driving part may also include gears, belts and other components to transmit power to the core shaft 11. In the embodiment of the present application, the roller body 12 is a cylindrical entity or a hollow body, the outer peripheral surface 121 of the roller body 12 is a cylindrical surface, and the roller end faces 120 of the roller body 12 are two axial end faces.

[0053] The cutting blade 13 protrudes from the outer peripheral surface 121 of the roller body 12. In specific implementation, the cutting blade 13 can be independently manufactured and connected to the outer peripheral surface 121 of the roller body 12, or the cutting blade 13 and the roller body 12 are integrally manufactured as a whole structure.

[0054] The radial dimension D1 of the cutting blade 13 is greater than the radial dimension D2 of the outer peripheral surface 121 of the roller body 12. The radial dimension D2 of the outer peripheral surface 121 of the roller body 12 refers to the outer diameter of the roller body 12 (i.e., the diameter of the outer peripheral surface 121). The radial dimension D1 of the cutting blade 13 refers to the dimension of the cutting blade 13 along the diameter direction of the roller body 12. The radial dimension D1 of the cutting blade 13 forms the cutting diameter A of the cutting roller 1.

[0055] In addition, the present application does not limit the number of cutting blades 13, and the number of cutting blades 13 can be at least one or other numbers. For example, two or more cutting blades 13 are arranged axially and protrude from the outer peripheral surface 121 of the roller body 12. Of course, the roller body 12 can also be a complete component, or a plurality of split structures can be arranged at intervals along the axial direction, and each split structure is provided with at least one cutting blade 13.

[0056] The first support member 14 is disposed on the mandrel 11 and is located on both sides of the roller body 12. Specifically, a pair of first support members 14 are arranged on the outside of the two axial end faces of the roller body 12 and fixed on the mandrel 11. In the embodiment of the present application, the first support member 14 is a guide ring, and the radial dimension D3 of the guide ring is greater than the radial dimension D2 of the outer peripheral surface 121 of the roller body 12, and the radial dimension D3 of the guide ring is equal to the radial dimension D1 of the cutting blade 13. It should be noted that the radial dimension D3 of the guide ring is set to be consistent with the radial dimension D1 of the cutting blade 13, which refers to the ideal state (not considering the grinding after wear, etc.); but if the grinding amount of the subsequent cutting blade 13 after a period of use is considered, the radial dimension D1 of the cutting blade 13 can be set to be slightly larger than the radial dimension D3 of the guide ring, such as: the radial dimension D1 of the cutting blade 13 is greater than the radial dimension D3 of the guide ring by 0 mm to 0.5 mm. The radial dimension D3 of the guide ring refers to: the outer diameter of the guide ring. By setting the radial dimension, the first support component 14 can ensure the axial gap between the cutting roller 1 and the anvil roller 2 (to prevent one side from being higher than the other side in the axial direction), and can apply sufficient load force to the cut object (such as the continuous sheet W of the disposable diaper S), while also avoiding pressure accumulation on the cutting blade 13, thereby protecting the cutting blade 13. The detailed application method will be described in detail later.

[0057] The first bearing assembly 15 is disposed between the corresponding first support member 14 and the roller body 12. Specifically, a pair of first bearing assemblies 15 are respectively arranged on the outside of the two roller end surfaces 120 of the roller body 12 and located on the axial inner side of the corresponding first support member 14. Therefore, in the axial direction, the first bearing assembly 15 is closer to the roller end surface 120 of the roller body 12 than the first support member 14, and the core shaft 11 axially extends from the roller end surface 120 of the roller body 12 and is supported by the first bearing assembly 15. Through this layout design, under the action of load, the cutting roller 1 (especially the roller body 12) will bend and deform in the direction of the reverse force F during cutting (exaggerated), as shown in FIG. Figure 5 As shown (the deformation curve shown in the figure is for illustration only and is not the actual bending size).

[0058] More specifically, the first bearing assembly 15 is connected to a frame 4. When the first support component 14 receives an external load force B, the first bearing assembly 15 will be subjected to a reverse force F in the opposite direction to the load force B. The external load force B and the reverse force F in the opposite direction to the load force B will cause the roller body 12 to deform in the direction of the reverse force F. The so-called reverse force F can be understood as follows: when the first support component 14 receives an external load force, the cutter roller 1 will tend to move in the direction of the external load force B, so the frame 4 will be subjected to a force in the direction of the external load force B, thereby generating a reaction force (i.e., a reverse force F in the opposite direction to the load force B) on the first bearing assembly 15, and the reaction force will drive the roller body 12 to deform in the direction of the reverse force F.

[0059] In addition, the first bearing assembly 15 provided in the embodiment of the present application is configured to set its position relative to the first support member 14 in the axial direction according to the radial dimension D1 of the cutting blade 13. When the position of the first bearing assembly 15 relative to the first support member 14 in the axial direction changes, the deformation amount of the roller body 12 in the direction of the reverse force F can be changed. In other words, when the distance (or spacing) between the axial position of the first bearing assembly 15 and the axial position of the first support member 14 is different, the deformation amount of the roller body 12 in the direction of the reverse force F is also different. For example, by changing the position size of the first bearing assembly 15 in the axial direction from the first support member 13, the deformation amount of the roller body 12 in the direction of the reverse force F can be changed.

[0060] Several factors that affect the deformation amount of the roller body 12 are described below.

[0061] When the cutting diameter A of the cutter roller 1 is the same, the first bearing assembly 15 is arranged at different positions along the axial direction from the first support member 14, and the deformation amount of the cutter roller 1 in the direction of the reverse force F will be different. Figure 6 and Figure 7As shown, the first bearing assembly 15 is usually arranged farther away from the first support member 14 (closer to the roller body 12 of the cutter roller 1), the greater the deformation of the cutter roller 1 (or the roller body 12) in the direction of the reverse force F. On the contrary, the closer to the first support member 14 (farther away from the roller body 12), the smaller the deformation of the cutter roller 1 (or the roller body 12) in the direction of the reverse force F. Therefore, by appropriately changing the position of the first bearing assembly 15 relative to the first support member 14 in the axial direction, the deformation of the cutter roller 1 can be changed to ensure that the cutting blade 13 can successfully cut the continuous sheet W (cutting object) of the disposable sanitary product S.

[0062] When the cutting diameter A of the cutter roller 1 is different, even if the first bearing assembly 15 is arranged at the same axial position, the deformation amount of the cutter roller 1 will be different. Therefore, it is necessary to appropriately change the position of the first bearing assembly 15 relative to the first support member 14 along the axial direction according to the different cutting diameters A of the cutter roller 1, so as to ensure that the deformation amount of the cutter roller 1 can enable the cutter blade 13 to successfully cut the continuous sheet W (cutting object) of the disposable sanitary product S.

[0063] When the cutting diameters A of the cutter roller 1 are different and the axial positions of the first bearing assembly 15 are also different, the deformation amounts of the cutter roller 1 in the direction of the reverse force F may be different, and the deformation curves thereof may also be different.

[0064] For example, for disposable diapers S of different sizes, the cutting roller 1 should be set with different cutting diameters A according to different sizes. In order to make the downward deformation of the cutting roller 1 large enough during cutting, so as to ensure that the cutting blade 13 of the cutting roller 1 can contact the anvil roller 2 and better cut the continuous sheet W of the disposable diaper S, it is necessary to flexibly and reasonably set the relative position of the first bearing assembly 15 and the first support component 14 in the axial direction. Therefore, it is only necessary to adjust the axial position of the first bearing assembly 15 to ensure that the cutting roller 1 can reach the anvil roller 2 during cutting. That is, when designing the cutting diameter A of the cutting roller 1 of different sizes, it is necessary to ensure that the deformation of the cutting roller 1 in the direction of the reverse force F can contact the anvil roller 2 and form the leg opening K on the continuous sheet W of the disposable diaper S.

[0065] As can be seen from the above description, the cutting roller 1 provided in the embodiment of the present application can deform in the direction of the reverse force F during cutting by arranging the first bearing assembly 15 axially between the cutting blade 13 and the first supporting member 14. With this layout, when the relative position of the first bearing assembly 15 and the first supporting member 14 along the axial direction is changed, the deformation amount of the cutting roller 1 in the direction of the reverse force F during cutting can be changed, thereby improving the cutting quality.

[0066] The following will refer to Figure 3 , Figure 4 , Figure 5 The detailed working principle of the arc cutter device 100 provided in the embodiment of the present application is further explained.

[0067] The arc cutter device 100 provided in the embodiment of the present application comprises a frame 4, and the cutter roller 1 and the anvil roller 2 are both mounted to the frame 4. Specifically, the first bearing assembly 15 of the cutter roller 1 and the second bearing assembly 23 of the anvil roller 2 are both mounted to the frame 4.

[0068] The arc cutter device 100 provided in the embodiment of the present application also includes a load applying component 3, which is used to apply an external load force B to the second bearing assembly 23. When the load force B is transmitted to the first support component 14 through the second support component 24, the frame 4 generates a reverse force F opposite to the direction of the load force B on the first bearing assembly 15, so that the roller body 12 is deformed in the direction of the reverse force F. More specifically, when the external load force B is applied to the second bearing assembly 23 through the load applying component 3, the load force B will be transmitted to the first support component 14 through the second support component 24, and at the same time, the second support component 24 will be subjected to a reaction force opposite to the external load force B from the first support component 14 (the direction of the reaction force is consistent with the direction of the reverse force F, for example, both are downward). Under the external load force B borne by the second bearing assembly 23 (the load force B will be transmitted to the first support component 14 through the second support component 24) and the reaction force borne by the second support component 24 opposite to the external load force B, the anvil body 22 is deformed in the direction of the reverse force F, which can be referred to as Figure 5 The deformation curve of the anvil roller 2 is shown in FIG. 2 . At the same time, when the first support member 14 receives the external load force B transmitted by the second support member 24, the cutter roller 1 tends to move in the direction of the external load force B, so the frame 4 generates a reaction force on the first bearing assembly 15 (i.e., a reverse force F opposite to the external load force B). Under the action of the external load force B borne by the first support member 14 and the reverse force F opposite to the external load force B borne by the first bearing assembly 15, the roller body 12 deforms in the direction of the reverse force F. For reference, see FIG. Figure 5 The deformation curve of the cutting roller 1 is shown.

[0069] In the embodiment of the present application, the load applying component 3 is a cylinder, which is arranged below the second bearing assembly 23 and applies an external load force B to the second bearing assembly 23. By adjusting the load applied by the cylinder to the second bearing assembly 23, the deformation of the cutter roller 1 and the anvil roller 2 can be controlled, thereby achieving a uniform cutting effect.

[0070] In addition, the arc cutter device 100 provided in the embodiment of the present application further includes a driving unit, which is used to connect the cutter roller 1 and drive the cutter roller 1 to rotate, and the cutter roller 1 drives the anvil roller 2 to rotate in the opposite direction, and the cutter blade 13 abuts against the anvil body 22 to perform cutting. Figure 4 As shown, during cutting, the cutter roller 1 rotates counterclockwise, and the anvil roller 2 rotates clockwise. When the cutting blade 13 of the cutter roller 1 abuts against the anvil body 22 of the anvil roller 2, the leg openings K can be cut out on the continuous sheet W of the disposable diaper S. Of course, the cutter roller 1 can also rotate clockwise, and the anvil roller 2 rotates counterclockwise. The specific implementation can be set according to the actual process direction, and it is only necessary to ensure that the leg openings K are cut out on the continuous sheet W of the disposable diaper S.

[0071] Compared with the cutter device 9 described in the background art, the arc cutter device 100 provided in the embodiment of the present application changes the structural layout of the cutter roller 1 and the anvil roller 2, which can optimize the cutting function of the arc cutter device 100 provided in the embodiment of the present application. For example, the arc cutter device 100 provided in the embodiment of the present application moves the first bearing assembly 15 from the outer side of the first support part 14 to the inner side of the first support part 14, that is, the first bearing assembly 15 is axially arranged between the roller body 12 and the first support part 14. Through this layout design of the present application, the cutter roller 1 can be deformed in the direction of the reverse force opposite to the direction of the external load force, and the deformation amount can also be changed by changing the position of the first bearing assembly 15. In addition, the cutter device 9 described in the background art cannot change the position of its bearing assembly because the bearing assembly of the rotating cutter roller 90 is arranged at the outermost side of the rotating cutter roller 90. The present application changes the layout of each component so that the axial position of the first bearing assembly 15 changes accordingly according to the preset deformation amount, and can also shorten the length of the cutting roller 1 in the axial direction, thereby making it easier to control the cutting process of the entire arc cutting device 100, simplify the device structure, and reduce the equipment volume.

[0072] In addition, in the present application, compared with the original structure, the anvil roller 2 structure moves the second bearing assembly 23 from the inner side of the second support component 24 to the outer side of the second support component 24, thereby lengthening the axial use length of the anvil body 22. In this way, the effective use length of the anvil body can be expanded within the limited device volume, which can be suitable for cutting objects (products) of multiple sizes, better support the cutting objects during the cutting process, and improve the cutting quality to a certain extent.

[0073] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] It should be noted that in the description of this application, terms such as "first" and "second" are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0075] The above is a detailed introduction to the cutting roller 1 and the arc cutting device 100 having the cutting roller 1 provided in the embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A cutting roller, characterized in that: include: Mandrel; The roller body has an outer peripheral surface and roller end surfaces on both sides, wherein the core shaft protrudes from the roller end surfaces on both sides and is used to drive the roller body to rotate; at least one cutting blade, disposed on the roller body and protruding from the outer peripheral surface of the roller body; a pair of first supporting members, arranged on the core shaft and respectively located on both sides of the roller body, for supporting the cutting roller; as well as a pair of first bearing assemblies, used for supporting the mandrel and allowing the mandrel to rotate therein, and respectively located between the corresponding first supporting members and the roller body; The roller body is deformed in a direction of the reverse force when the first support component receives an external load force and the first bearing assembly receives a reverse force in a direction opposite to the load force.

2. The cutting roller according to claim 1, characterized in that: The cutting blade is independently manufactured and connected to the outer peripheral surface of the roller body, or the cutting blade and the roller body are integrally manufactured as an integral structure.

3. The cutting roller according to claim 1, characterized in that: The radial dimension of the cutting blade is larger than the radial dimension of the outer peripheral surface of the roller body.

4. The cutting roller according to claim 1, characterized in that: The first supporting member is a guide ring, and a radial dimension of the guide ring is larger than a radial dimension of an outer peripheral surface of the roller body.

5. The cutting roller according to claim 4, characterized in that: The radial dimension of the guide ring is equal to the radial dimension of the cutting edge.

6. The cutting roller according to claim 1, characterized in that: The cutting roller is mounted to a frame, and the first bearing assembly is connected to the frame. When the first supporting component receives the external load force, the first bearing assembly receives the reverse force from the frame in the opposite direction of the load force, so that the roller body is deformed in the direction of the reverse force.

7. The cutting roller according to claim 6, characterized in that The first bearing assembly is constructed to set its position relative to the first support component in the axial direction according to the radial size of the cutting blade. When the position of the first bearing assembly relative to the first support component in the axial direction changes, the deformation amount of the roller body toward the direction of the reverse force can be changed.

8. An arc-shaped cutting device for cutting disposable sanitary products, characterized in that: The arc cutter device comprises a cutter roller according to any one of claims 1 to 7, and an anvil roller, wherein the anvil roller is arranged corresponding to the cutter roller.

9. The arc cutter device according to claim 8, characterized in that: The anvil roller includes Anvil shaft; An anvil body, comprising an anvil surface and anvil end surfaces on both sides; wherein the anvil shaft protrudes from the anvil end surfaces on both sides of the anvil body; a pair of second bearing assemblies, respectively located on both sides of the anvil body, for supporting the anvil shaft for rotation therein; a pair of second supporting members, disposed on the anvil shaft and respectively located between the corresponding second bearing assemblies and the anvil body; The second supporting component is in radial contact with the first supporting component. When the second bearing assembly receives the external load force, the second supporting component transmits the load force to the first supporting component, and the anvil body deforms in the direction of the reverse force.

10. The arc cutter device according to claim 9, characterized in that: The curved cutter device includes a frame to which the first bearing assembly of the cutter roller and the second bearing assembly of the anvil roller are mounted.

11. The arc cutter device according to claim 10, characterized in that: The arc cutter device includes a load applying component for applying the external load force to the second bearing assembly. When the load force is transmitted to the first supporting component through the second supporting component, the frame generates a reverse force on the first bearing assembly that is opposite to the direction of the load force, causing the roller body to deform in the direction of the reverse force.

12. The arc cutter device according to claim 11, characterized in that: The load applying component is a cylinder, and the cylinder acts on the second bearing assembly to apply the external load force to the second bearing assembly.

13. The arc cutter device according to claim 9, characterized in that: The arc cutter device comprises a driving part, which is used to connect the cutter roller and drive the cutter roller to rotate. The cutter roller drives the anvil roller to rotate towards each other, and the cutter blade abuts against the anvil body to perform cutting.

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