TWI818622B - How to make three-dimensional masks - Google Patents

Abstract

A method for making a three-dimensional mask, which includes a feeding step, a pressing step, an ear strap welding step, a folding step, an edge welding step and a cutting step. Through the pressing step, the mask sheet is formed with welded features on its surface. The outer peripheral line of the predetermined shape, and in the folding step, the mask sheet with the ear straps welded to it is folded in half through an upwardly inclined forming plate, and then a joint edge is formed on the mask sheet through the edge welding step. Finally, through the cutting step, the mask sheet is cut along the outer peripheral line and the joint edge, and then an independent three-dimensional mask can be made.

Description

How to make three-dimensional masks

The present invention relates to an automated manufacturing method of three-dimensional masks, and particularly refers to a method of manufacturing a three-dimensional mask that can avoid deflection of mask sheets during transportation and provide fast and accurate folding functions.

According to reports, the most common type of disposable masks is flat masks. The conventional flat masks mainly use the wrinkle design on their structure so that they can be folded into a flat shape when not in use. When you want to use them, you need to use the wrinkles again. It is unfolded into a three-dimensional shape, which makes its use more troublesome, and the three-dimensional effect formed is not ideal.

Therefore, there are also three-dimensional masks on the market that are made with a left and right folding structure to provide a more convenient use method and a better three-dimensional effect. However, this kind of three-dimensional mask requires multiple cutting operations in the production, and the mask piece is Under the influence of the shrinkage of the material itself, segmented cutting work not only easily accumulates cutting errors, but also easily causes the mask sheet to shift during transportation; in addition, how can three-dimensional masks be manufactured quickly and accurately? It is also the focus of the current research and development of three-dimensional mask manufacturers to effectively perform the folding work and thereby improve its production speed and yield.

The main purpose of the present invention is to provide a method for making a three-dimensional mask, which can effectively prevent the mask sheet from deflecting during transportation, and can provide a fast and accurate automatic folding action, thereby greatly improving its production efficiency and quality. The effect of rate.

In order to achieve the aforementioned purpose, the present invention provides a method for making a three-dimensional mask, which includes the following steps: A feeding step, through a feeding unit, the mask sheets are continuously transported according to the set stacking sequence, and the mask sheets are stacked together; a pressing step, through a first welding wheel group, the stacked masks are The sheet is continuously pressed to form an outer peripheral line that is welded and has a predetermined shape on the mask sheet; an ear strap welding step is to weld the ear straps at a predetermined position within the outer peripheral line through an ear strap welding device; In the one-folding step, the mask sheet with the ear straps welded to it is folded in half through a forming plate that is tilted upward. The formed plate is in the shape of a triangular plate and has a vertex that tapers along the conveying direction of the mask sheet, making the mask When the sheet passes through the forming plate, the mask sheet can automatically produce a folding action; an edge welding step, in which a second welding wheel set is used to fuse the joint edges of the folded mask sheet; a cutting step , perform a cutting action on the mask sheet after the edge welding is completed through a cutting wheel set. The cutting wheel set has a cutter, and the shape of the cutter is consistent with the outer peripheral line of the folded mask sheet and the joint. The shapes of the edges are corresponding, so that the cutting wheel set can cut along the outer peripheral line of the mask sheet and the joint edge, and then make an independent three-dimensional mask.

The above objects and advantages of the present invention can be easily understood from the following detailed description of selected embodiments and the accompanying drawings.

11: Feeding unit

12: Layer setting mechanism

21:The first fusion wheel set

22: Welding part

23:Detection device

31: Ear strap welding device

41: Formed panels

42: vertex

421:Plate part

422: Curved arc section

43:Base

431:Telescopic rod

44: Pivot base

45:Roller

46:Rear side

461: Pivot block

47: Gap

48: Center line

481:Left half

482:Right half

49: Straight roller set

51: Second fusion wheel set

61: Cutting wheel set

62:Cutter

91: Mask sheet

92:Peripheral line

93:joint edge

Figure 1 is a manufacturing flow chart of the present invention.

Figure 2 is a schematic diagram of the manufacturing equipment of the present invention.

Figure 3 is a schematic structural diagram of the first welding wheel set and the ear band welding device of the present invention.

Figure 4 is a schematic structural diagram of the formed plate member of the present invention.

Figure 5 is a schematic diagram of the use state of the formed plate of the present invention.

Figure 6 is a schematic structural diagram of the second welding wheel set and the cutting wheel set of the present invention.

First, please refer to Figures 1 to 6, which is a method for making a three-dimensional mask provided by the present invention, which includes the following steps in sequence:

a. Feeding step: Through a feeding unit 11, the mask sheets 91 are continuously transported according to the set stacking order, and the mask sheets 91 of multiple cloth rolls (usually non-woven fabrics) can be output and stacked together, and in When the mask sheets 91 are stacked on each other, the bridge of the nose strips are set in the stacked mask sheets 91 through a strip setting mechanism 12 at the same time.

b. Pressing step: Continuously press the stacked mask sheets 91 through a first welding wheel set 21, as shown in Figure 3. The first welding wheel set 21 is provided with a welding portion of a predetermined peripheral shape of the mask. 22. After the stacked mask sheets 91 pass through the first welding wheel set 21, an outer peripheral line 92 with a predetermined shape can be formed on the surface of each mask sheet 91 and formed on the first welding wheel set 21. The output side of the welding wheel set 21 is provided with a detection device 23 for detecting the output alignment of the mask sheet 91 .

c. Earband welding step: When the mask sheet 91 passes through the first welding wheel set 21 and the detection device 23 in sequence, it will then enter an earband welding device 31, and the earband welding device 31 is used to weld the earbands. Welded at a predetermined position within the outer peripheral line 92.

d. Step of folding: then fold the mask sheet 91 with the ear straps welded on it through a forming plate 41 arranged tilted upward. The forming plate 41 is in the shape of a triangular plate and has a tapered shape along the conveying direction of the mask sheet 91. At the vertex 42, when the mask sheet 91 passes through the forming plate 41, the mask sheet 91 can automatically produce a folding action. As shown in Figure 4, the molded plate 41 is arranged on a base 43 in an inclined manner. The base 43 is provided with two opposite pivot seats 44 on one side, and the two pivot seats 44 are A roller 45 is pivoted between them, and the forming plate 41 has a rear side 46 facing the roller 45 and conveying along the mask sheet 91 The apex 42 of the tapered direction, the rear side 46 and the roller 45 are arranged parallel to form a gap 47, and the upward top surface of the forming plate 41 is divided into a symmetrical left half 481 along the center line 48. and a right half 482, and the left half 481 and the right half 482 respectively extend downward from the center line 48 in a bevel shape, and the forming plate 41 is located at the two end points of its rear side 46 A pivot block 461 is connected, and the molded plate 41 is pivoted on both ends of the roller 45 with each pivot block 461, and a telescopic rod 431 is provided on the base 43. The telescopic rod 431 One end of the telescopic rod 431 is pivotally connected to the base 43, and the other end of the telescopic rod 431 is pivoted to the bottom surface of the molded plate 41, and by adjusting the telescopic length of the telescopic rod 431, the molded plate 41 can pivot the two ends of the roller 45 as the axis, and thereby the inclination angle of the forming plate 41 can be changed to meet various assembly requirements. Furthermore, the forming plate 41 further extends forward to form a flat plate portion 421 at its vertex 42 , and a curved arc section 422 is formed at a forward corner position above the flat plate portion 421 .

Referring to Figure 5, after the mask sheet 91 completes the welding of the ear straps, the mask sheet 91 first passes under the roller 45, and then passes upward through the gap 47, and then the mask sheet 91 is The part of 91 passing through the gap 47 is relatively close to the top surface of the formed plate 41, and when the mask cloth 91 is pulled toward the roller set 49, it moves toward the top 42 of the formed plate 41. When the mask fabric 31 is continuously pulled downwards at an angle, the mask sheet 91 can be along the center line 48 of the molded plate 41 and pass through the inclined surfaces of its left half 481 and right half 482. The shape of the tapered vertex 42 toward the front gradually converges. In this way, the folding work can be automatically completed, and through the flat plate portion 421 and the curved arc of the formed plate 41 protruding from the vertex 42 The design of section 422 can ensure the accuracy and smoothness of its folding work.

e. Edge welding step: After the mask sheet 91 completes its folding work, as shown in Figure 6, a second welding wheel set 51 is used to perform a fusing action on the joint edge 93 of the folded mask sheet 91.

f. Cutting step: As shown in Figure 6, a cutting action is performed on the mask sheet 91 after the edge welding is completed through a cutting wheel set 61. The cutting wheel set 61 has a cutter 62. The shape of the knife 62 corresponds to the outer peripheral line 92 of the folded mask sheet 91 and the shape of the joint edge 93, so that the cutting wheel set 61 can be cut along the outer peripheral line 92 and the joint edge 93 of the mask sheet 91 to make an independent three-dimensional mask, and then a continuous three-dimensional mask manufacturing process can be completed.

The manufacturing method of the three-dimensional mask provided by the present invention can not only simplify the manufacturing process of the three-dimensional mask by adopting a single cutting step, but also reduce the accumulation of cutting errors. Moreover, the present invention only applies it in the final manufacturing process. The one-time cutting process can effectively prevent the mask sheet 91 from deflecting during transportation, and combined with the forming plate 41 used in the folding step, it can provide a fast and accurate automatic folding action, and through the molding The design of the protruding flat portion 421 and the curved arc section 422 of the plate member 41 at its vertex 42 can further ensure the accuracy and smoothness of its folding operation, thereby greatly improving its production efficiency and yield.

However, the disclosure of the above embodiments is only for illustrating the present invention and is not intended to limit the present invention. Therefore, any changes in numerical values or replacement of equivalent components should still fall within the scope of the present invention.

To sum up, when it can be understood by those who are familiar with this art that the present invention can clearly achieve the aforementioned purpose, it actually complies with the provisions of the patent law, so the application is filed in accordance with the law.

Claims (4)

A method for making a three-dimensional mask includes the following steps: a feeding step, through a feeding unit, continuously transporting mask sheets according to a set stacking sequence, and stacking the mask sheets together; a laminating step, through a The first welding wheel set continuously presses the stacked mask sheets so that the mask sheets are welded and have an outer peripheral line of a predetermined shape; the first ear strap welding step is to use an ear strap welding device to fuse the ear straps. Welded at a predetermined position within the outer perimeter line; in the folding step, the mask sheet with the ear straps welded to it is folded in half through a molding plate that is tilted upward. The molded plate is in the shape of a triangular plate and has an edge along the mask The apex of the tapering direction of the sheet material allows the mask sheet to automatically produce a folding action when the mask sheet passes through the forming plate. The forming plate is arranged on a base in an inclined manner, and the forming plate is It has a rear side connected to the base and a vertex that tapers along the mask sheet conveying direction. The top surface of the formed plate is divided into a left half and a right half with symmetrical shapes along its center line. The left half and the right half respectively extend downward from the center line and are inclined planes. The base is provided with two opposite pivot seats on one side, and a pivot seat is provided between the two pivot seats. The roller, the rear side of the formed plate is facing the roller, and the rear side is arranged parallel to the roller to form a gap. The formed plate is connected with a pivot block at the two end points of the rear side, and The formed plate is pivoted on both ends of the roller with each of the pivot blocks, and a telescopic rod is provided on the base. One end of the telescopic rod is pivotally connected to the base, and the telescopic rod The other end is pivotally connected to the bottom surface of the formed plate; An edge welding step, using a second welding wheel set to fuse the joint edges of the folded mask sheet; a cutting step, using a cutting wheel set to cut the mask sheet after the edge welding is completed The cutting wheel set has a cutting knife, and the shape of the cutting knife corresponds to the outer peripheral line of the folded mask sheet and the shape of the joint edge, so that the cutting wheel set can be cut along the mask sheet. The outer peripheral line and the joint edge are cut, and then made into an independent three-dimensional mask. The method for making a three-dimensional mask as claimed in claim 1, wherein in the feeding step, the nose bridge pressure strips are simultaneously placed in the stacked mask sheets through a pressure strip setting mechanism. The method for manufacturing a three-dimensional mask as claimed in claim 1, wherein in the pressing step, the output side of the first welding wheel set is further provided with a detection device for detecting the output alignment of the mask sheet. The method for making a three-dimensional mask as claimed in claim 1, wherein the molded plate extends forward to form a flat plate portion at its apex, and a curved arc section is formed at a forward corner position above the flat plate portion.

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