KR102241393B1 - Mask manufacturing Apparatus - Google Patents

Abstract

The present invention relates to a mask manufacturing apparatus, in which a marking is performed on a far-end paper during the first ultrasonic welding, and when the marked portion reaches the first cutting portion, an error in the feeding distance occurs due to a change in the stretching length of the far-end paper. In this case, the stretching length of the original paper is adjusted between the first ultrasonic fusion region and the first cutting region, and at the same time, it is circled according to the error of the feeding distance according to the stretching length by the marked region in the second ultrasonic fusion region and the second cutting region. It is an object of the present invention to provide a mask manufacturing apparatus in which the outer portion of the jar is controlled to maintain a constant distance from the ultrasonically fused portion.

Description

Mask manufacturing Apparatus}

The present invention relates to a mask manufacturing apparatus, and in particular, to a mask manufacturing apparatus for solving defects that are not formed at the ultrasonic fusion area and the cutting area of the mask due to stretching that occurs when feeding the mask fabric wound on a roll. About.

In general, equipment for manufacturing a dustproof or quarantine mask is such that two or more sheets of filter paper to form a filter are wound on each roller, and are laminated by ultrasonic fusion while feeding these filter papers, and then have the shape of a mask. It is cut by ultrasound.

In the mask manufacturing process, the outer paper forming the mask, the intermediate filter paper, and the original paper forming the inner paper are fed from each roller by a feeding roller, and the upper part covering the nose part of the mask body and the chin part are covered. After ultrasonic welding is performed by the first ultrasonic welding roller so as to have an outer shape corresponding to the lower part, the outside of the ultrasonically fused region is cut by the first cutting roller.

After that, after folding the area covering the wearer's nose and chin area from the top and bottom of the mask body to the top surface of the mask body, the folded area, that is, the folded edge area, is ultrasonically fused and bonded again by a second ultrasonic welding roller. It keeps the folded state.

In addition, individual masks are manufactured by cutting the outer portion of the mask body by which the nose portion and the jaw portion are folded and ultrasonically fused by the second cutting roller.

However, according to this prior art, since the outer paper, the intermediate filter paper, and the inner paper each have their own elongation, they are fed by the feeding roller and are then fused by the first ultrasonic fusion roller or the second ultrasonic fusion roller. When the length to be stretched is changed by the feeding force when feeding to the cutting roller or the second cutting roller, a problem occurs in that the outer portion is cut while not maintaining a constant distance from the ultrasonic fusion portion.

That is, the first ultrasonic fusion roller and the first cutting roller, or the second ultrasonic fusion roller and the second cutting roller are installed to maintain a certain distance (that is, a distance slightly longer than the length of the mask body), After being fused only when feeding with a certain feeding force and elongation, the outer part is cut while maintaining a certain distance to the outer side. Since it is cut in close proximity to or cut by invading the fused area, a problem occurs in that productivity due to defects is greatly reduced.

In addition, since the ultrasonically fused portion is easily damaged due to such defects, the outer paper, the intermediate filter paper, and the inner paper are easily separated, so that external contaminants such as fine dust and viruses cannot be filtered.

<prior technical literature>

1. Registered Patent No. 10-0783311

(Mask manufacturing device by ultrasonic fusion)

2. Registered Patent No. 10-1597735

(Laminated dust mask manufacturing apparatus and manufacturing method using the same)

3. Registered Patent No. 10-1600005

(Integrated dust mask manufacturing device and manufacturing method using the same)

4. Unexamined Patent Publication No. 10-2018-0117338

(Mask manufacturing apparatus and manufacturing method)

In order to solve such a conventional problem, the present invention marks the far-end paper during the first ultrasonic fusion, and when the marked portion reaches the first cutting portion, the error of the feeding distance due to the change in the stretching length of the far-end paper. When occurs, the stretching length of the original paper is adjusted between the first ultrasonic fusion region and the first cutting region, and the difference in the feeding distance according to the stretching length is caused by the marked region in the second ultrasonic fusion region and the second cutting region. Accordingly, it is an object of the present invention to provide a mask manufacturing apparatus in which an outer portion is maintained at a constant distance from an ultrasonically fused portion by adjusting the stretching length of the original paper.

Mask manufacturing apparatus according to the present invention for achieving the above object,

The first ultrasonic fusion of the original papers fed from a plurality of rolls by first ultrasonic welding the outer portion of the portion covering the nose on the upper side of the mask body and the outer portion of the portion covering the lower jaw are first ultrasonically fused to laminate the original papers. Ultrasonic welding roller;

A marking part for marking on the original paper laminated at the position of the first ultrasonic fusion roller;

A first sensor for detecting a mark marked by the marking unit;

A first cutting roller for cutting while maintaining a predetermined distance from the outer portion of the portion covering the nose and the outer portion of the portion covering the jaw fused by the first ultrasonic fusion roller;

A second sensor detecting the mark at the position of the first cutting roller;

A first stretching length adjusting unit positioned between the first ultrasonic fusion roller and the first cutting roller to adjust the stretching length of the original paper;

A folding part that folds an outer portion of a portion covering the nose and an outer portion of the portion covering the jaw cut by the first cutting roller to an upper surface of the mask body;

A second ultrasonic fusion roller for secondary ultrasonic welding of the portion folded by the folding portion and the outer portion of the mask body;

A second cutting roller for cutting while maintaining a predetermined distance from the outer portion of the portion fused by the second ultrasonic fusion roller;

A third sensor detecting the mark at the position of the second ultrasonic fusion roller;

A fourth sensor sensing the mark at the position of the second cutting roller;

A second stretching length adjusting unit positioned between the second ultrasonic fusion roller and the second cutting roller to adjust the stretching length of the original paper;

Control the first stretching length adjusting unit by determining the stretched length of the far-end paper between the first ultrasonic fusion roller and the first cutting roller according to the marks detected by the first sensor and the second sensor, and the third And a controller configured to control the second stretching length adjusting unit by determining the stretched length of the original paper between the second ultrasonic fusion roller and the second cutting roller by the mark detected by the sensor and the fourth sensor. do.

According to the present invention configured as described above, by determining the stretched length of the original paper between the ultrasonic welding roller and the cutting roller by the marks formed on the original paper, and adjusting the stretching length of the original paper, the cut portion from the fused portion is at a constant interval. There is an advantage of solving the defect of the mask by maintaining the value, thereby increasing the productivity.

1 is a diagram showing a state in which a defect occurs due to proximity or invasion between the fused area and the cut area of the mask.
Figure 2 is a view showing the structure of the mask manufacturing apparatus of the present invention.
Figure 3 is a view showing the structure of the first ultrasonic fusion roller and the first cutting roller.
Figure 4 is a view showing the structure of the second ultrasonic fusion roller and the second cutting roller.
Figure 5 is a view showing the structure of the extension length adjustment unit.
6 is a block diagram of a control circuit for controlling an extension length adjustment unit.

The above-described objects, features, and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, a person of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention.

In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

Terms used in the present invention have selected general terms that are currently widely used as possible while taking functions of the present invention into consideration, but this may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like.

In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention.

Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the embodiments of the present invention exemplified below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

Embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art.

2 is a diagram showing the structure of the mask manufacturing apparatus of the present invention, FIG. 3 is a diagram showing the structures of the first ultrasonic fusion roller and the first cutting roller, and FIG. 4 is a diagram showing the structure of the second ultrasonic fusion roller and the second cutting roller. It is a diagram showing the structure.

And, Figure 5 is a diagram showing the structure of the stretching length adjustment unit, Figure 6 is a block diagram of a control circuit for controlling the stretching length adjustment unit.

As shown in Fig. 2, the present invention provides a far-end paper (F1) constituting the outer surface of the mask from each winding roller, a filter paper (F2) constituting the inner filter of the mask, and a far-end paper (F3) constituting the inner surface of the mask. Is fed by the feeding rollers 200 and 1000 and supplied to the first ultrasonic fusion roller 300 and the first cutting roller 500.

In the first ultrasonic fusion roller 300, the final paper (F1, F2, F3) is ultrasonically applied to have a shape of a flat shape of a mask, that is, a body part, an upper part surrounding the wearer's nose, and a lower part surrounding the wearer's chin part. It is laminated and fused by the ultrasonic wave, and the first cutting roller 500 is supplied to the folding part 600 by cutting by ultrasonic waves while maintaining a certain distance with the outer part of the part fused by ultrasonic waves.

At this time, as shown in FIG. 3, a mark (S) is formed by the marking portion 301 at the portion where the first ultrasonic fusion roller 300 is located, and this mark (S) is fused by the first ultrasonic fusion roller 300 It may be formed or printed by a separate printing tool, for example, an inkjet printer.

Therefore, such marks (S) are preferably formed in the space between the mask body (M) on both sides corresponding to the mask body (M), the first ultrasonic fusion roller 300 and the first fusion roller 500 ) Is provided with a first sensor 310 and a second sensor 510 for detecting the mark S, respectively.

The first sensor 310 and the second sensor 510 may be contact sensors for directly contacting and sensing the fused portion when the mark S is formed by ultrasonic fusion, or by an inkjet printer. In the case of printing, it may be provided as an optical sensor, and is provided directly on the first ultrasonic fusion roller 300 and the first fusion roller 500 to detect the mark (S) while rotating with each roller (300, 500). I can.

In addition, a first encoder 320 and a second encoder 520 are installed on the axes of the first ultrasonic fusion roller 300 and the first cutting roller 500, so that the controller 1100 is the first sensor 310 And it is possible to determine the stretched length of the far-end paper F based on the mark S sensed by the second sensor 510 and the values of the first and second encoders 320 and 520.

A first stretching length adjusting unit 400 is provided between the first ultrasonic fusion roller 300 and the first cutting roller 500, and the first ultrasonic fusion roller 300 is controlled by the controller 1100. The stretching length of the original paper F fed between the and the first cutting roller 500 is adjusted.

As shown in FIG. 5, the first extension length adjustment part 400 is located in a state in which the roller 440 abuts against the upper surface of the distal paper F, and the roller 440 is supported by the shaft 430. And the shaft 430 is connected by a rotation shaft of the first motor 410 and a coupler 420 so that the shaft 430 is raised and lowered by the rotation of the first motor 410 so that the roller 440 is circular. The jar (F) is either pressed downward or is not pressed.

The width of the roller 440 is the same as the width of the original paper (F) or has a slightly larger size.

Accordingly, the stretching length of the original paper (F) is adjusted according to the degree to which the roller 440 descends between the first ultrasonic fusion roller 300 and the first cutting roller 500.

The coupler 420 is in the form of a nut, and the shaft 430 is in the form of a bolt, and the shaft 430 is inserted or extracted into the coupler 420 by the rotation of the first motor 410 so that the roller 440 is It is a structure that rises and descends.

That is, when the first motor 410 is fixed to the frame and both sides of the roller 440 are supported to be movable in the vertical direction on the frame, the roller 440 is moved in the vertical direction by the driving of the first motor 410. Movement is possible, and the structure of adjusting the stretching length by pressing the original paper F by moving the roller 440 in the vertical direction may be changed as much as possible.

The folding part 600 folds a portion covering the nose and a portion covering the jaw with the upper surface of the mask body M, and this is a known technique, so a specific structure will not be described.

At the rear of the folding part 600, a second ultrasonic fusion roller 700, a second stretching length adjusting part 800, and a second cutting roller 900 are sequentially installed at the rear of the folding part 600.

The second ultrasonic fusion roller 700 ultrasonically welds the folded portion by the folding part 600 and the outer portion of the mask body M as shown in FIG. 4, and the second cutting roller 900 is ultrasonically fused. Each mask is manufactured by cutting with a certain distance from the area.

At this time, the second ultrasonic fusion roller 700 and the second cutting roller 900 also have a third sensor 710 and a fourth sensor in the same manner as the first ultrasonic fusion roller 300 and the first cutting roller 500. 910) is installed, and the second stretching length adjusting part 800 has the same structure as the first stretching length adjusting part 400, and the second ultrasonic fusion roller 700 and the second cutting roller 900 By being installed therebetween, the stretching length of the original paper F is adjusted between the second ultrasonic fusion roller 700 and the second cutting roller 900 under the control of the controller 1100.

Of course, encoders 720 and 920 are installed on the shafts of the second ultrasonic fusion roller 700 and the second cutting roller 900, respectively.

The operation of the present invention will be described.

First, while the original paper (F1, F2, F3) wound on each winding roll is fed by the feeding rollers 200 and 1000, the nose of the mask is moved to the outer part and the chin by the first ultrasonic fusion roller 300. The outer portion covering the portion is ultrasonically fused to be laminated, and at the same time, a mark S is formed at a position corresponding to the side portion of the mask body M.

At the same time as the mark (S) is formed, the first sensor 310 confirms that the mark (S) is formed. In addition, when a value is input from the first sensor 310, the controller 1100, the first encoder ( 320).

As the far end (F) is fed, when the mark (S) is detected by the second sensor 510 of the first cutting roller 500, the controller 1100 reads the value of the second encoder 520 to mark the mark. It is checked whether the position of (S) is in the error range, and when it exceeds the error range, the first stretching length adjusting unit 400 is controlled to adjust the stretching length of the far-end paper (F).

That is, the position of the first ultrasonic fusion roller 300 and the distance D1 of the first cutting roller 500 are fixed, and the first ultrasonic fusion roller 300 and the first cutting roller 500 have the same number of rotations. Since the controller 1100 has the mark (S) in the second sensor 510 based on the value of the first encoder 320 when the mark (S) is detected by the first sensor 310 When is detected, the error is compared by comparing the value of the second encoder 520.

For example, during the time that the first encoder 320 and the second encoder 520 rotate once, the mark S is'D1' from the first ultrasonic fusion roller 300 to the position of the first cutting roller 500. When it is assumed that the movement is moved by a distance of and the reference setting value is set in the controller 1100, the mark S detected by the second sensor 510 is the one rotation time of the second encoder 520 If detected before, this is a state in which the original paper (F) is excessively stretched.

This will cause a defect as shown in FIG. 1 because the ultrasonically fused part and the cutting part are misaligned with each other, so the controller 1100 is the first cutting roller between the first ultrasonic fusion roller 300 and the first cutting roller 500. It will be necessary to lengthen the stretching length of the original paper (F) supplied to (500).

That is, the stretching length of the original paper S is increased so that the mark S marked by the first ultrasonic fusion roller 300 can be moved to the first cutting roller 500 within an error range. ) Drives the first motor 410 of the first extension length adjustment unit 400 to first move the shaft 430 downward by a predetermined length, so that the roller 440 presses the far end (F), and the first ultrasonic wave The length of the original paper F is increased between the fusion roller 300 and the first cutting roller 500.

In this state, the mark (S) is again formed on the original paper (F) by the marking portion 301 of the first ultrasonic fusion roller (300), and the controller 1100 performs the sensing process of the mark (S) again. If the mark (S) is moved to the position of the second sensor 510 within the error range, the position of the roller 440 is fixed at that position, but if it is out of the error range, the roller ( The first motor 410 is driven again to move the 440 downward again.

Thereafter, if it is detected after one rotation time of the second encoder 520, the controller 1100 moves the roller 440 upward to adjust the degree of elongation of the distal paper (F).

As a result, while repeatedly performing the upward movement and downward movement of the roller 440, the mark S is converged so that the timing at which the second sensor 510 is sensed falls within the error range, and when it falls within the error range, the roller 440 ) To fix the pressure position.

Of course, when the position of the mark S is out of the error range again, the controller 1100 continuously controls the fusion portion and the cutting portion to be accurately formed at regular intervals by repeating the above process.

The second ultrasonic fusion roller 700, the second stretching length adjustment unit 800, and the second cutting roller 900 are also the first ultrasonic fusion roller 300, the first stretching length adjustment unit 400, and It operates in the same way as the first cutting roller 500, except that the marking part is not provided at the portion of the second ultrasonic fusion roller 700.

As a result, since the distance (D2) between the second ultrasonic fusion roller 700 and the second cutting roller 900 is fixed, the controller 1100 3 The mark (S) sensed by the encoder 720 moves to the second fusion roller 900, and the second extension length adjuster by the error detected by the fourth sensor 910 and the second encoder 920 By controlling the second motor 810 of 800, the fused portion and the cut portion are accurately formed at regular intervals.

In addition, as shown in Fig. 4, the area marked with the mark S does not remain on the mask body M after the edge of the mask body M is cut, and is marked on the scrap area to be discarded. It is desirable that the mark S does not leave a mark.

As described above, specific parts of the present invention have been described in detail, and for those of ordinary skill in the art, it is obvious that these specific techniques are only preferred embodiments, and the scope of the present invention is not limited thereby. something to do.

Accordingly, it will be said that the substantial scope of the present invention is defined by the appended claims and their equivalents.

F,F1,F2,F3: Original paper
S: mark
200,1000: Feeding roller
300,700: Ultrasonic welding roller
301: marking part
310,510,710,910: sensor
320,520,720,920: Encoder
400,800: extension length control unit
410: motor
420: coupler
430: shaft
440: roller
500,900: Cutting roller
600: folding part

Claims (5)

A first ultrasonic fusion of the original papers fed from a plurality of rolls, and the outer portion of the portion covering the nose on the upper side of the mask body and the outer portion of the portion covering the lower chin are first ultrasonically fused to laminate the original paper Ultrasonic welding roller;
A marking part for marking on the original paper laminated at the position of the first ultrasonic fusion roller;
A first sensor for detecting a mark marked by the marking unit;
A first cutting roller for cutting while maintaining a predetermined distance from the outer portion of the portion covering the nose and the outer portion of the portion covering the jaw fused by the first ultrasonic fusion roller;
A second sensor detecting the mark at the position of the first cutting roller;
A first stretching length adjusting unit positioned between the first ultrasonic fusion roller and the first cutting roller to adjust the stretching length of the original paper;
A controller for controlling the first stretching length adjusting unit by determining the stretched length of the far-end paper between the first ultrasonic fusion roller and the first cutting roller according to the marks detected by the first sensor and the second sensor; Become,
The first sensor and the second sensor are formed integrally with each of the first ultrasonic fusion roller and the first cutting roller, and encoders are installed on the axes of the first ultrasonic fusion roller and the first cutting roller, respectively, and the controller A mask manufacturing apparatus, characterized in that, by receiving the values of the respective encoders at positions of the first sensor and the second sensor sensing a mark, the first extension length adjusting unit is controlled.
The method of claim 1,
A folding part that folds an outer portion of the portion covering the nose and the outer portion of the portion covering the jaw cut by the first cutting roller to an upper surface of the mask body;
A second ultrasonic fusion roller for secondary ultrasonic welding of the portion folded by the folding portion and the outer portion of the mask body;
A second cutting roller for cutting while maintaining a predetermined distance from the outer portion of the portion fused by the second ultrasonic fusion roller;
A third sensor detecting the mark at the position of the second ultrasonic fusion roller;
A fourth sensor sensing the mark at the position of the second cutting roller;
And a second stretching length adjusting unit positioned between the second ultrasonic fusion roller and the second cutting roller to adjust the stretching length of the original paper, and comprising:
The controller is configured to determine the stretched length of the far end paper between the second ultrasonic fusion roller and the second cutting roller according to the marks sensed by the third sensor and the fourth sensor, and control the second stretch length adjustment unit. Mask manufacturing apparatus, characterized in that.
The mask manufacturing apparatus according to claim 1 or 2, wherein the mark is formed by fusion bonding by the first ultrasonic fusion roller or printed by a printing device.
The method according to claim 1 or 2, wherein the first extension length control part or the second extension length control part
A roller contacting the upper surface of the original paper;
A shaft supporting the roller;
And a motor that drives the shaft up and down by being controlled by the controller.
The method of claim 2, wherein the third sensor and the fourth sensor are integrally formed with the second ultrasonic fusion roller and the second cutting roller, respectively, and an encoder is formed on the axis of the second ultrasonic fusion roller and the second cutting roller, respectively. And the controller controls the second extension length adjusting unit by receiving values of the respective encoders at positions of the third sensor and the fourth sensor sensing a mark.

Images