A sanitary napkin and cotton core double blade two-cut rolling die cutting roller

Abstract

The utility model discloses a sanitary towel and cotton core double-blade two-cutting's roll pressure die cutting roller, including cooperation roll pressure die cutting finished product's upper roller structure, lower roller structure, upper roller structure includes cutter support roller body, is inlayed with cylindrical cutter on cutter support roller body surface, and cylindrical cutter is formed by a plurality of tile arc-shaped cutter butt joint, and lower roller structure includes the smooth surface pad cutting cutter of cylindrical, and cutter support roller body, tile arc-shaped cutter surface is respectively circumferentially provided with a plurality of upper roller air hole, and the smooth surface pad cutting cutter surface circumferentially sets a plurality of lower roller air hole, the utility model sets up air hole, can effectively reduce the accumulation of heat in the die cutting process, prevents the roller surface overheating, improves cooling effect simultaneously, and air hole makes cooling medium and compressed air circulation, more effective cooling roller surface, prevents the roller surface cutter expansion, adopts tile arc-shaped modular inlaying type joint blade common cutting and double-blade roller two-cutting's die cutting technology, has no interval between sanitary towel wing piece and piece, saves and reduces material cost.

Description

Technical Field

[0001] This utility model relates to the field of online die-cutting technology for fully automated production lines of sanitary products, specifically to a rolling die-cutting roller for double-edging sanitary napkins and cotton cores. Background Technology

[0002] Currently, the online die-cutting technology of automated production equipment for disposable sanitary napkins is moving from traditional roller die-cutting technology to the application of a combination of insert-type blade rollers and rotary die-cutting rollers. The upper roller die-cutting technology uses insert-type blades with convex blades on their surfaces, while the lower roller is a smooth, integral roller.

[0003] Existing automated production equipment for online die-cutting technology produces sanitary napkin wing shapes and cotton cores. The production line is set up with two die-cutting units (stations) to complete the cutting of the products. In particular, the die-cutting arrangement of sanitary napkin wing shapes also uses the continuous cutting die-cutting technology. However, due to the unsuitable blade design of the existing continuous cutting, the pieces stick together and cannot be cut, resulting in an increase in product waste. This continuous cutting die-cutting technology is no longer widely used by users.

[0004] Currently, the die-cutting of sanitary napkin wings and cores still uses a two-unit (two-station) die-cutting method. This die-cutting technology is outdated and remains at a primitive stage, unable to incorporate a single-roller double-blade inner and outer cut. In particular, the lack of light-transmitting holes at both ends of the upper and lower rollers traps air within the rollers. During die-cutting, the frictional heat generated when the material adheres to the upper and lower rollers causes the rollers to expand thermally, making it difficult to cool the air on the roller surface. This results in material being drawn between the upper and lower rollers, causing a loose fit, affecting product quality, and leading to deformation and damage to the upper and lower rollers, resulting in wrinkles and other defects in the product.

[0005] Existing rotary die-cutting rollers only have single-item single-cutting technology and do not have the new rolling die-cutting technology of cutting two items with one roller and two blades. They also do not have the technical function of cutting sanitary napkins and cotton cores on the inside and outside of one roller at the same time. For example, the production of sanitary napkins and cotton cores of the same type but different types cannot be completed on the same roller.

[0006] As mentioned above, existing rotary die-cutting roller technology has certain technical drawbacks or defects, resulting in high manufacturing costs, high scrap rates, and poor production line efficiency and stability. It also suffers from problems such as short service life of the upper and lower cutters and rollers. Utility Model Content

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a double-edged die-cutting roller for sanitary napkins and cotton cores, comprising an upper roller structure and a lower roller structure for cooperating with the die-cutting of finished products. The upper roller structure includes a cutter support roller body, on which a cylindrical cutter is inlaid. The cylindrical cutter is formed by connecting several tile-shaped arc-shaped cutter modules end to end. The lower roller structure includes a cylindrical smooth-surfaced pad-cutting cutter. The cutter support roller body and the tile-shaped arc-shaped cutter modules are respectively provided with several upper roller ventilation holes on their circumferential surfaces. The smooth-surfaced pad-cutting cutter is provided with several lower roller ventilation holes on its circumferential surfaces. The upper roller ventilation holes are connected to the lower roller ventilation holes. The cylindrical cutter surface is provided with sanitary napkin outline cutting edge lines and cotton core inward cutting edge lines. The sanitary napkin outline cutting edge lines are arranged longitudinally, and the cotton core inward cutting edge lines are located inside the sanitary napkin outline cutting edge lines and are arranged transversely with the sanitary napkin outline cutting edge lines.

[0008] Furthermore, upper roller drive shafts are respectively provided at both ends of the tool support roller body, and lower roller drive shafts are respectively provided at both ends of the smooth surface pad cutting tool.

[0009] Furthermore, the sanitary napkin's outer edge line is a continuous, co-cutting outer edge line.

[0010] Furthermore, the outer edge of the sanitary napkin and the inner cutting edge of the cotton core are each cut by a separate, non-connected blade.

[0011] Furthermore, the sanitary napkin's outer blade line is located at the junction of its starting and ending points, and its blade line is a double-edged blade line with the ability to cut with continuous blades. Auxiliary blade lines are also provided on the cylindrical blades on both sides.

[0012] Furthermore, the tool support roller, the tile-shaped arc-shaped tool module, and the smooth surface pad cutting tool are also provided with several threaded holes. The tile-shaped arc-shaped tool module is fixed to the tool support roller or the smooth surface pad cutting tool surface by bolts.

[0013] Furthermore, the cutter support roller and the smooth surface cutting cutter are both fixed with protective rings by bolts.

[0014] The advantages of this utility model compared with the prior art are: this utility model solves certain technical drawbacks and defects in the existing rotary die-cutting roller design and manufacturing technology.

[0015] (1) This utility model proposes a universal type of rolling die-cutting roller, roller and knife that can be matched with the cotton core and the shape of the sanitary napkin. The working end face of the upper and lower roller protective ring and the upper and lower roller surfaces are specially provided with ventilation holes, which can effectively reduce the accumulation of heat during the die-cutting process, prevent the roller surface from overheating, and improve the cooling effect. The ventilation holes allow the cooling medium and compressed air to circulate, which can more effectively cool the roller surface and prevent the roller surface and knife from expanding. The cooling medium introduced by the ventilation holes can reduce the friction between the roller body and knife surface and the sanitary product material, thereby effectively extending the service life of the die-cutting roller and knife, and also ensuring the stability of the die-cutting effect.

[0016] (2) This utility model adopts the tile-shaped modular inlay type continuous blade co-cutting and double-blade roller two-cutting die-cutting technology, which has no gap between the sanitary napkin wing pieces, greatly saving and reducing material costs. For sanitary products with the same model of sanitary napkin and cotton core but different pattern shape, only the tile-shaped arc-shaped cutter module needs to be replaced, and the upper and lower rollers do not need to be replaced to continue production die-cutting.

[0017] (3) The working principle and physical properties of this utility model have the general properties of two types of sanitary products. The inner and outer cut shapes are stable, the yield and production efficiency are high, and the production cost of enterprises is greatly reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a double-edged die-cutting roller for cutting sanitary napkins and cotton cores according to this utility model.

[0019] Figure 2 This is a schematic diagram of the upper roller structure in a double-edged rolling die-cutting roller for sanitary napkins and cotton cores according to this utility model.

[0020] Figure 3 This is a schematic diagram of the tile-type arc-shaped cutter module in a double-edged rolling die-cutting roller for sanitary napkins and cotton cores, according to this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the tile-type arc-shaped cutter module in a double-edged rolling die-cutting roller for sanitary napkins and cotton cores, according to this utility model. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the tile-type arc-shaped cutter module in a double-edged rolling die-cutting roller for sanitary napkins and cotton cores, according to this utility model. Figure 3 .

[0023] Figure 6 This is a schematic diagram showing the unfolding and interface of the tile-type arc-shaped cutter module in a double-edged rolling die-cutting roller for sanitary napkins and cotton cores according to this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example:

[0030] Combined with appendix Figure 1-2 A double-edged rolling die-cutting roller for sanitary napkins and cotton cores, comprising an upper roller structure 100 and a lower roller structure 200 for rolling die-cutting finished products;

[0031] The upper roller structure 100 includes a cutter support roller body, on which a cylindrical cutter 101 is inlaid. The cylindrical cutter 101 is formed by connecting several tile-shaped arc-shaped cutter modules 101a end to end. The lower roller structure 200 includes a cylindrical smooth-surface pad-cutting cutter 201, the surface hardness of which needs to be precisely matched with the hardness of the upper roller cutting edge to ensure that the surface of the lower roller is not damaged during the rolling cutting process, avoiding the generation of dents, thereby significantly extending the service life of the entire die-cutting roller set.

[0032] The tool support roller and the tile-shaped arc-shaped tool module 101a are respectively provided with several upper roller vent holes 101b on their circumferential surfaces, and the smooth surface pad cutting tool 201 is provided with several lower roller vent holes 202 on its circumferential surface. The upper roller vent holes 101b and the lower roller vent holes 202 are connected. The tool support roller is provided with upper roller drive shafts 104 at both ends, and the smooth surface pad cutting tool 201 is provided with lower roller drive shafts 203 at both ends. In the working state, the upper roller vent holes 101b and the lower roller vent holes 202 are connected to each other through air passages formed at corresponding positions. This air passage is designed to alleviate the thermal expansion effect generated during the operation of the control roller. By introducing cooling gas for circulation, the roller surface is effectively cooled and thermal stress is eliminated, preventing the roller from undergoing uncontrollable deformation or even damage due to temperature rise, and ensuring long-lasting and stable die-cutting accuracy and product quality.

[0033] The number of tile-type arc-shaped cutter modules 101a is selected to be 6-8 and evenly distributed. In other embodiments, the number of ventilation holes and tile-type arc-shaped cutter modules 101a can also be set according to specific circumstances. The upper roller structure 100 has a double-edged line with multiple functions. It can cut the cotton core with both inner and outer blade lines, and can also cut the shape of the sanitary napkin wings with the same blade. This saves material costs and improves economic efficiency.

[0034] The tool support roller, the tile-type arc-shaped tool module 101a, and the smooth surface pad cutting tool 201 are also provided with a number of threaded holes 105 / 204. The tile-type arc-shaped tool module 101a is fixed to the tool support roller or the smooth surface pad cutting tool 201 by bolts. The tool support roller and the smooth surface pad cutting tool 201 are fixed with protective rings 300 at both ends by bolts to protect the ends of the roller and to axially position the tool module.

[0035] Combined with appendix Figure 3-6 The cylindrical cutter 101 has a sanitary napkin outline cutting edge 102 and a cotton core incision cutting edge 103 on its surface. The sanitary napkin outline cutting edge 102 is arranged longitudinally, and the cotton core incision cutting edge 103 is located inside the sanitary napkin outline cutting edge 102 and is arranged laterally with the sanitary napkin outline cutting edge 102.

[0036] The sanitary napkin's outer edge cutting line 102 is a continuous cutting edge cutting line; the sanitary napkin's outer edge cutting line 102 and the cotton core internal cutting edge cutting line 103 are separate cutting blades without connecting edges; the sanitary napkin's outer edge cutting line 102 is located at the junction of its starting and ending ends, and its cutting line is a double-edged cutting line with continuous cutting performance. Auxiliary cutting edge lines 106 are also provided on the cylindrical cutters 101 on both sides; the sanitary napkin's outer edge cutting line 102 and the cotton core internal cutting edge cutting line 103 can not only efficiently and independently complete the continuous cutting of the outer contour of the sanitary napkin wings, but also simultaneously and accurately cut the shape of the internal cotton core. In particular, by reducing edge waste through continuous cutting, production efficiency and economic benefits are greatly improved.

[0037] This utility model is used to produce sanitary napkins and cotton core products with the same size but different shapes by using a single roller with two blades for dual-purpose cutting. Only the tile-shaped arc-shaped cutter modules on the upper and lower rollers need to be replaced, without having to replace the cutter rollers, to complete the cutting of sanitary napkins and cotton core products with different shapes.

[0038] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0039] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A double-bladed die-cutting roller for sanitary napkins and cotton cores, comprising an upper roller structure and a lower roller structure for die-cutting finished products, characterized in that, The upper roller structure includes a cutter support roller body, on which a cylindrical cutter is inlaid. The cylindrical cutter is formed by connecting several tile-shaped arc-shaped cutter modules end to end. The lower roller structure includes a cylindrical smooth-surfaced pad-cutting cutter. The cutter support roller body and the tile-shaped arc-shaped cutter modules are respectively provided with several upper roller ventilation holes on their circumferential surfaces. The smooth-surfaced pad-cutting cutter is provided with several lower roller ventilation holes on its circumferential surfaces. The upper roller ventilation holes are connected to the lower roller ventilation holes. The cylindrical cutter surface is provided with sanitary napkin outline cutting edge lines and cotton core inward cutting edge lines. The sanitary napkin outline cutting edge lines are arranged longitudinally, and the cotton core inward cutting edge lines are located inside the sanitary napkin outline cutting edge lines and are arranged transversely with the sanitary napkin outline cutting edge lines.

2. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The tool support roller is provided with upper roller drive shafts at both ends, and the smooth surface pad cutting tool is provided with lower roller drive shafts at both ends.

3. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The sanitary napkin's outer edge is a continuous, co-cutting edge.

4. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The outer edge of the sanitary napkin and the inner cutting edge of the cotton core are cut by separate blades without connecting edges.

5. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The sanitary napkin's outer blade line is located at the junction of its starting and ending points. The blade line is a double-edged blade line, which has the performance of continuous cutting. Auxiliary blade lines are also provided on the cylindrical blades on both sides.

6. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The tool support roller, the tile-shaped arc-shaped tool module, and the smooth surface pad cutting tool are also provided with several threaded holes. The tile-shaped arc-shaped tool module is fixed to the tool support roller or the smooth surface pad cutting tool surface by bolts.

7. The double-bladed die-cutting roller for sanitary napkins and cotton cores according to claim 1, characterized in that, The cutter support roller and the smooth surface cutting cutter are fixed with protective rings at both ends by bolts.

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