Needling rolling device for perforated film

Abstract

The utility model provides a needling rolling device for a perforated film, which comprises a rack, an upper roller and a lower roller are arranged on the rack, a plurality of arrayed conical bulges are arranged on the surface of the upper roller, grooves corresponding to the bulges are arranged on the surface of the lower roller, raised positioning thimbles are arranged at the bottoms of the grooves, and the positioning thimbles are arranged on the surfaces of the upper roller and the lower roller. And the height of the positioning ejector pin is lower than the depth of the groove. By means of the structure, when a large hole of a punching film is punched, the punching film passing through can be rolled under the cooperation of the protrusion of the upper roller and the groove of the lower roller, and the punching position can be positioned under the arrangement of the positioning ejector pin of the groove, so that the accuracy of the hole position is improved, and the punching efficiency is improved. The deviation of the hole site is avoided, and the processing quality of the large hole of the perforated film is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of perforated film processing equipment, and in particular to a needle-punching roller pressing device for perforated film. Background Technology

[0002] Perforated membranes are widely used in the surface layer of sanitary napkins, panty liners, and baby diapers. To improve the comfort of the surface layer in contact with the skin, effectively reduce the contact area with the wearer's skin, increase the penetration rate of body fluids, and reduce the sticky feeling, it is necessary to create small holes and perforations in the perforated membrane to obtain permeation channels and form an uneven structure on the surface of the perforated membrane to reduce the contact area. The formation of large holes in the perforated membrane is generally achieved using a roller pressing device consisting of concave rollers and needle rollers.

[0003] For example, Chinese Patent Publication No. CN201721223301.6 discloses a forming apparatus including a forming mesh cage, a vacuum forming drum, a concave roller, and a needle roller. The surface of the concave roller has recessed and non-recessed areas spaced apart from each other, and the surface of the needle roller has perforated areas and countersunk areas spaced apart from each other. Each perforated area contains at least one perforating needle. When processing large holes in a perforated film, the perforation is performed by the perforating needle on the needle roller during the rolling pressing process of the perforated film by the concave roller and the needle roller. Using this method, the perforated film is easily pierced by the perforating needle before it is pressed down by the concave roller and the needle roller, causing the hole position to shift and affecting the processing quality of large holes in the perforated film. Utility Model Content

[0004] This utility model discloses a needle-punching roller pressing device for perforated membranes, which mainly solves the problem of hole position displacement when processing large holes in perforated membranes using traditional structures.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a needle-punching roller pressing device for perforated film, including a frame, an upper roller and a lower roller are arranged on the frame, the surface of the upper roller is provided with a plurality of arrayed conical protrusions, the surface of the lower roller is provided with grooves corresponding to the conical protrusions, and the bottom of the groove is provided with a raised positioning pin, the height of the positioning pin being lower than the depth of the groove.

[0007] In one embodiment, there is a gap between the bottom surface of the positioning pin and the bottom of the groove.

[0008] In one embodiment, the multiple conical protrusions on the upper roller are arranged in a hexagonal honeycomb structure.

[0009] In one embodiment, the bottom of the positioning pin is provided with an annular groove, which makes the positioning pin elastic.

[0010] In one embodiment, an elastic element is provided in the annular groove.

[0011] In one embodiment, the height of the conical protrusion is 1-5 mm.

[0012] In one embodiment, the gap is 0.05-0.1 mm.

[0013] In one embodiment, the ratio of the height of the conical protrusion to the depth of the groove is 1:1.2-1.5.

[0014] In one embodiment, the surface of the positioning pin is provided with a DLC coating.

[0015] The advantages or beneficial effects of the above technical solution include at least the following: when punching large holes in the perforated membrane, the perforated membrane can be rolled by the cooperation between the conical protrusion of the upper roller and the groove of the lower roller, and the positioning pin of the groove can position the punching position, thereby improving the accuracy of the hole position, avoiding the deviation of the hole position, and improving the processing quality of large holes in the perforated membrane. Attached Figure Description

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0017] Figure 1 A schematic diagram of the entire present invention is shown;

[0018] Figure 2 A schematic diagram of the upper and lower rollers of this utility model is shown;

[0019] Figure 3 A schematic diagram of the lower roller of this utility model is shown;

[0020] Figure 4 The present invention is shown in the figure. Figure 3 A magnified view of a portion of the image.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Rack;

[0023] 2. Upper roller;

[0024] 21. Conical protrusion;

[0025] 3. Lower roller;

[0026] 31. Groove; 32. Positioning pin; 321. Annular groove; 33. Elastic element. Detailed Implementation

[0027] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0028] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0030] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0031] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0032] See Figures 1 to 4This utility model provides a needle-punching roller pressing device for perforated film, including a frame 1. An upper roller 2 and a lower roller 3 are mounted on the frame 1. The surface of the upper roller 2 has a plurality of arrayed conical protrusions 21. The surface of the lower roller 3 has grooves 31 corresponding to the conical protrusions 21. A raised positioning pin 32 is provided at the bottom of the groove 31, and the height of the positioning pin 32 is less than the depth of the groove 31. The conical protrusions 21 and grooves 31 are matched so that the cross-sectional structures of the conical protrusions 21 and grooves 31 are identical. The cross-sections of the conical protrusions 21 and grooves 31 can be circular, polygonal, or irregular in shape.

[0033] With the above structure, when punching large holes in the perforated membrane, the tapered protrusion 21 of the upper roller 2 and the groove 31 of the lower roller 3 can roll the perforated membrane. With the positioning pin 32 in the groove 31, the punching position can be positioned, thereby improving the accuracy of the hole position, avoiding hole offset, and improving the processing quality of large holes in the perforated membrane.

[0034] In one embodiment, see Figure 4 There is a gap between the bottom surface of the positioning pin 32 and the bottom of the groove 31.

[0035] The gap is 0.05-0.1mm. In practical applications, by setting the gap between the positioning pin 32 and the groove 31, it is possible to prevent dimensional changes that may occur between the positioning pin 32 and the groove 31 due to thermal expansion during the processing, and to provide compensation space for deformation.

[0036] In one embodiment, see Figure 2 The multiple conical protrusions 21 on the upper roller 2 are arranged in a hexagonal honeycomb structure. In practical applications, arranging the multiple conical protrusions 21 in a hexagonal pattern allows the processed large holes to be evenly arranged on the perforated film and ensures a relatively stable structure among the multiple conical protrusions 21.

[0037] In one embodiment, see Figure 4 The bottom of the positioning pin 32 is provided with an annular groove 321, which makes the positioning pin 32 elastic.

[0038] An elastic element 33 is provided in the annular groove 321. In practical applications, by providing an annular groove 321 at the bottom of the positioning pin 32, the positioning pin 32 can be made elastic to prevent the positioning pin 32 from deforming when the conical protrusion 21 abuts against it, thus affecting the positioning function. The elastic element 33 is provided in the annular groove 321 to compensate for minor deformation of the positioning pin 32.

[0039] In one embodiment, see Figures 1 to 4 The height of the conical protrusion 21 is 1-5mm.

[0040] The ratio of the height of the conical protrusion 21 to the depth of the groove 31 is 1:1.2-1.5. In practical applications, by setting the height of the conical protrusion 21 and the depth of the groove 31, it can be ensured that the depth of the groove 31 is greater than the height of the protrusion, so that the conical protrusion 21 can fit into the groove 31. Specifically, the height between the end of the conical protrusion 21 and the bottom of the groove 31 is less than the height of the positioning pin 32, thereby ensuring that the positioning pin 32 can pierce the perforation membrane and perform the positioning function of the hole.

[0041] In one embodiment, see Figure 4 The surface of the positioning ejector pin 32 is coated with a DLC coating. In practical applications, by applying a DLC coating to the surface of the positioning ejector pin 32, the wear resistance of the positioning ejector pin 32 can be improved, thereby reducing the service life of the positioning ejector pin 32. The DLC coating can be applied by plating.

[0042] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0043] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A needle-punching roller pressing device for perforated membranes, characterized in that, The device includes a frame on which an upper roller and a lower roller are mounted. The surface of the upper roller has a plurality of arrayed conical protrusions, and the surface of the lower roller has grooves corresponding to the conical protrusions. The bottom of the grooves has raised positioning pins, the height of which is less than the depth of the grooves.

2. The needle-punching roller pressing device for perforated membrane as described in claim 1, characterized in that, There is a gap between the bottom surface of the positioning pin and the bottom of the groove.

3. The needle-punching roller pressing device for perforated membranes as described in claim 1, characterized in that, The multiple conical protrusions on the upper roller are arranged in a hexagonal honeycomb structure.

4. The needle-punching roller pressing device for perforated membrane as described in claim 1, characterized in that, The bottom of the positioning pin is provided with an annular groove, which makes the positioning pin elastic.

5. The needle-punching roller pressing device for perforated membrane as described in claim 4, characterized in that, An elastic element is provided in the annular groove.

6. The needle-punching roller pressing device for perforated membrane as described in claim 1, characterized in that, The height of the conical protrusion is 1-5mm.

7. The needle-punching roller pressing device for perforated membrane as described in claim 2, characterized in that, The gap is 0.05-0.1 mm.

8. The needle-punching roller pressing device for perforated film as described in claim 1 or 6, characterized in that, The ratio of the height of the conical protrusion to the depth of the groove is 1:1.2-1.

5.

9. The needle-punching roller pressing device for perforated membrane as described in claim 1, characterized in that, The surface of the positioning pin is coated with DLC.

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