KR102609388B1 - Functional filter manufacturing apparatus for mask - Google Patents

Abstract

The present invention relates to a filter manufacturing device that can easily manufacture a functional filter by vaporizing additives such as antibacterial agents, deodorants, and fragrances in the process of expanding pulp and allowing the generated effective gas to penetrate the pulp.

Description

Functional mask non-woven filter manufacturing apparatus {Functional filter manufacturing apparatus for mask}

The present invention relates to a filter manufacturing device that can easily manufacture a functional filter by vaporizing additives such as antibacterial agents, deodorants, and fragrances in the process of expanding pulp and allowing the generated effective gas to penetrate the pulp.

The environmental atmosphere in which people live contains a large amount of foreign substances such as fine dust, and such fine dust and yellow dust enter the human respiratory tract, causing various diseases, and are having a fatal negative impact on people living in modern times.

Here, the fine dust refers to dust particles so thin and small that they are invisible to our eyes, and includes numerous air pollutants such as sulfur dioxide, nitrogen oxides, lead, ozone, and carbon monoxide. The sources of these emissions are those generated by cars and factories. It is divided into artificial generation and natural generation such as yellow dust from sand, wind, dust, volcanic ash, and dust from forest fires. When a person inhales fine dust generated in this way, it penetrates deep into the alveoli and causes various respiratory diseases such as asthma, headache, atopy, etc. In particular, if the elderly and the weak continue to inhale it, their immune function decreases, leading to death from lung disease.

Masks filter out such fine dust and allow you to inhale purified air, so wearing a mask is highly recommended during outdoor activities.

Masks are used as a reason for the generation of fine dust, but their demand is increasing significantly because they are actively proposed as a means of personal protection to prevent the spread of respiratory infectious diseases that are prevalent around the world.

In order to respond to this demand, mask manufacturers are actively developing technologies to make masks easier to manufacture and distribute, and consumers are also recognizing masks, which were previously worn only in special situations, as daily necessities, making life easier and easier. They are requesting masks that can be applied safely.

Recently, masks with additional functions in addition to the basic function of blocking fine dust or viruses have been developed.

For example, there are masks that provide antibacterial properties to the mask to improve resistance to viruses and germs, enable self-purifying action, and improve the wearing comfort of the mask by giving it a scent.

Since such a mask requires an additional functional layer for imparting antibacterial properties or fragrance in addition to the filter layer, which is the essential part of the mask, an increase in the thickness of the mask is inevitable, which reduces the wearing comfort of the mask, and in the manufacturing process, these functional layers are used as filters. Because the joining process is added, the manufacturing process becomes complicated, making it impossible to avoid an increase in the cost of the mask.

Registered Patent 10-1214813

The present invention was created to solve the above-mentioned problems in the prior art, by vaporizing additives such as antibacterial agents, deodorizers, and fragrances in the process of expanding pulp (cotton), and allowing the generated effective gas to penetrate into the pulp, thereby providing functionality. The purpose is to provide a filter manufacturing device that can easily manufacture filters.

In addition, when a mask is manufactured using a filter manufactured in this way, there is no need to laminate a functional layer that performs additional functions on the filter, so the mask can be made lighter, prevent unnecessary decrease in breathability of the mask, and absorb gas. Accordingly, the purpose is to provide a filter manufacturing device that can significantly reduce the generation of static electricity.

In addition, since additional functional layers can be omitted when manufacturing masks, the thickness of the mask can be made thin, improving wearing comfort, and the manufacturing process can be simplified because bonding of functional layers can be omitted in the manufacturing process. The purpose is to provide a filter manufacturing device that can be expected to improve mask productivity and reduce costs.

The present invention is a means for achieving the above object, including a raw material supply unit for supplying cotton; An expansion unit that expands the tangled cotton supplied from the raw material supply unit; A web forming unit that collects the expanded cotton supplied from the expansion unit and processes it into a web shape; an adhesive application unit that applies adhesive to the web formed from the web forming unit; A drying unit that dries the adhesive applied to the web; A heating unit that heats the web that has passed through the drying unit to form a non-woven filter fabric; and a vaporizing unit that supplies effective gas to the expansion unit and allows the effective gas to penetrate the expanded cotton.

In addition, the expansion part includes a box-shaped case; A transfer pipe through which cotton is transferred; And a blower that injects high-pressure air into the transfer pipe to transport the cotton to the case, wherein the vaporization unit is installed on the path of the transfer pipe and supplies effective gas to the cotton passing through the transfer pipe. do.

In addition, the vaporization unit includes a chamber in which additives are stored and vaporizing the stored additives to generate effective gas; and a gas transfer line connecting the transfer pipe and the chamber, through which effective gas generated in the chamber is transferred.

In addition, the chamber is provided in plural pieces to individually store different types of additives, and the gas transfer line includes: a reservoir tank in which effective gas is stored; A first pipe connecting the reservoir tank and the transfer pipe; a plurality of second pipes extending from each of the plurality of chambers; a third pipe connected to the reservoir tank at one end and the plurality of second pipes at the other end; and a control plate rotatably installed between the second pipe and the third pipe, through which a communication hole communicating with at least one of the plurality of second pipes passes.

In addition, the adhesive application unit includes a pair of adhesive rollers through which a web passes; a guide frame extending parallel to the longitudinal direction of the adhesive roller from an upper portion of the adhesive roller; a nozzle assembly that reciprocates along the guide frame and supplies adhesive to the top of the adhesive roller; a pair of return switches installed on the guide frame to be spaced apart from each other and generating a contact signal when the nozzle assembly is contacted; A driving member that reciprocates the nozzle assembly along the guide frame; and a storage tank in which the adhesive falling downward from the pair of adhesive rollers is stored, wherein the driving member is wound in an endless track around a pair of pulleys installed spaced apart from each other on the guide frame and extends to the outside of the nozzle assembly. A transfer belt equipped with a; and a step motor that rotates at least one of the pair of pulleys in a forward or reverse direction, wherein the step motor changes the direction of rotation according to a contact signal to reciprocate the nozzle assembly mounted on the conveyance belt. It is characterized by

The present invention has the following effects.

First, the purpose is to provide a filter manufacturing device that can easily manufacture a functional filter by vaporizing additives such as antibacterial agents, deodorants, and fragrances in the process of expanding the pulp and allowing the generated effective gas to penetrate the pulp.

In addition, when a mask is manufactured using a filter manufactured in this way, there is no need to laminate a functional layer that performs additional functions on the filter, so the mask can be made lighter, prevent unnecessary decrease in breathability of the mask, and absorb gas. Accordingly, the generation of static electricity can be significantly reduced.

In addition, since additional functional layers can be omitted when manufacturing masks, the thickness of the mask can be made thin, improving wearing comfort, and the manufacturing process can be simplified because bonding of functional layers can be omitted in the manufacturing process. Improvements in mask productivity and cost reduction can be expected.

1 is a diagram conceptually showing the overall configuration of a filter manufacturing apparatus according to the present invention.
Figure 2 is a diagram showing the configuration of the expansion unit and the vaporization unit.
Figure 3 is a view showing the overall appearance of the vaporization unit.
Figure 4 is a view showing the exploded configuration of the second pipe, the third pipe, and the control plate.
FIG. 5 is a diagram schematically showing a cross-sectional configuration based on line AA shown in FIG. 3.
Figure 6 is a diagram for explaining the operation of the swing conveyor.
Figure 7 is a view showing the schematic appearance of the adhesive application part.
Figure 8 is a view showing the adhesive application portion viewed from direction A shown in Figure 7.
9 to 10 are diagrams for explaining an example of driving the adhesive application unit.
Figure 11 is a view showing an excess amount of adhesive on the top of the adhesive roller.
FIG. 12 is a diagram schematically showing a cross-sectional configuration based on line AA shown in FIG. 8.
Figure 13 is a diagram for explaining another embodiment of a rotating bar.
Figure 14 is a view for explaining another embodiment of the adhesion member.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

As shown in FIG. 1, the functional mask nonwoven filter manufacturing device (hereinafter referred to as the filter manufacturing device) according to the present invention includes a raw material supply unit 10 that supplies cotton, and cotton in an entangled state supplied from the raw material supply unit 10. An expansion unit 100 that expands, a web forming unit 200 that collects the expanded cotton supplied from the expansion unit 100 and processes it into a web shape, and an adhesive is applied on the web formed from the web forming unit 200. An adhesive application unit 300 for drying the adhesive applied to the web, a drying unit 600 for drying the adhesive applied to the web, a heating unit 400 for heating the web that has passed through the drying unit 600 to form a non-woven filter fabric, and the expansion unit. It can be defined as including a vaporization unit 500 that supplies effective gas to (100) and penetrates the effective gas into the expanded cotton.

As shown in the drawing, the expansion unit 100, web forming unit 200, adhesive application unit 300, drying unit 600, and heating unit 400 are arranged in order based on the raw material supply unit 10. The vaporization unit 500 may be arranged around the expansion unit 100.

Typically, cotton supplied from pulp (hereinafter referred to as cotton) suppliers is bundled together and supplied in a compressed form. If the compressed cotton is used as is to form a web, it is impossible to form a non-woven filter fabric with uniform density. . Therefore. The cotton goes through a process of expanding in the expansion unit 100. Meanwhile, the web as used in the description of the present invention refers to a state in which cotton is attached to each other.

First, the raw material supply unit 10 supplies compressed cotton to the expansion unit 100. At this time, the cotton supplied to the raw material supply unit 10 may be supplied at the same time as different types of cotton (first cotton, second cotton) with different melting points. For example, the first cotton is cotton with a melting point of 120°C or lower. And, the second cotton may be cotton with a melting point exceeding 120°C.

That is, when the first cotton and the second cotton are supplied to the raw material supply unit 10, the raw material supply unit 10 appropriately mixes the first cotton and the second cotton and supplies them to the expansion unit 100.

Next, the expansion unit 100 expands the first cotton and the second cotton delivered from the raw material supply unit 10 so that they are mixed with each other.

To this end, the expansion unit 100 injects high-pressure air into the box-shaped case 110, the transfer pipe 120 through which the cotton is transferred, and the transfer pipe 120, as shown in FIGS. 2 and 3. It may be illustrated as including a blower 140 that pressure-transports to the case 110.

The transfer pipe 120 connects the raw material supply unit 10 and the case 110, and provides a path for the cotton supplied from the raw material supply unit 10 to be transferred to the case 110.

The blower 140 is disposed at the end of the transfer pipe 120 adjacent to the raw material supply unit 10 and discharges high-pressure air toward the cotton supplied from the raw material supply unit 10 to the transfer pipe 120.

Accordingly, within the transfer pipe 120, the cotton is transferred to the case 110 along a high-pressure air current.

The case 110 is made in the form of an enclosure with a mesh top so that air can be exhausted, and the cotton pressured into the case 110 scatters irregularly inside the case 110, resulting in a mixture of the first cotton and the second cotton. will come true.

The expansion unit 100 may include a discharge member 130 that collects cotton scattered inside the case 110 and discharges it to the outside of the case 110 for storage.

That is, the cotton expanded inside the case 110 may be collected by the discharge member 130 and discharged to the outside of the case 110 again.

The discharge member 130 may be exemplified by a conveyor structure that can collect cotton flying inside the case 110 and discharge it to the outside of the case 110.

The cotton discharged to the outside of the case 110 by the discharge member 130 is input into the web forming unit 200.

The vaporization unit 500 is installed on the path of the transfer pipe 120 and supplies effective gas to the cotton passing through the transfer pipe 120.

Effective gas can be understood as vapor vaporized from an additive, and here, the additive may be, for example, an antibacterial solution, fragrance, etc.

The vaporization unit 500 vaporizes such additives and allows the vaporized effective gas to penetrate the cotton, making it possible to manufacture a filter that has antibacterial properties or has a scent preferred by consumers.

As a result, when a mask is manufactured using a filter manufactured by the filter manufacturing apparatus according to the present invention, there is no need to laminate a functional layer that performs an additional function on the filter, thereby reducing the weight of the mask and reducing the mask's unnecessary breathability. and, by absorbing gas, the generation of static electricity can be significantly reduced.

In addition, since the thickness of the mask can be configured to be thin, the wearing comfort is improved, and since bonding of the functional layer can be omitted in the manufacturing process, the manufacturing process is simplified, and effects such as improved productivity and cost reduction can be expected.

For this purpose, the vaporization unit 500 stores additives, as shown in FIGS. 2 and 3, and includes a chamber 510 that vaporizes the stored additives to generate effective gas, the transfer pipe 120, and the chamber 510. ) and may be illustrated as including a gas transfer line 520 through which the effective gas generated in the chamber 510 is transferred.

The effective gas generated from the chamber 510 can be supplied to the transfer pipe 120 through the gas transfer line 520, and in the transfer pipe 120, cotton and effective gas are transferred by high-pressure air transferred at a high flow rate. As they become entangled with each other, effective gases may penetrate into the cotton.

The chamber 510 may be provided in plural pieces to individually store different types of additives, or may have a partitioned space within the chamber 510 so that the different types of additives can be individually accommodated.

The chamber 510 may be equipped with a vaporization means for vaporizing the additive, and the vaporization means may be an ultrasonic oscillator or an electric heating device.

The gas transfer line 520 has a structure that can selectively supply at least one of the effective gases generated in each of the plurality of chambers 510 toward the transfer pipe 120.

For this purpose, the gas transfer line 520 includes a reservoir tank 521 in which effective gas is stored, a first pipe 522 connecting the reservoir tank 521 and the transfer pipe 120, and the plurality of chambers 510. ) A plurality of second pipes 523 extending from each, one end of which is connected to the reservoir tank 521, and the other end of which is connected to the plurality of second pipes 523, a third pipe 524 and the second pipe It is rotatably installed between (523) and the third pipe 524, and includes an adjustment plate 525 through which a communication hole 525a communicating with at least one of the plurality of second pipes 523 passes. It can be exemplified.

The effective gas generated in the chamber 510 travels through the second pipe 523 and the third pipe 524 and is stored in the reservoir tank 521, and the effective gas stored in the reservoir tank 521 has pressure and temperature. After being properly adjusted, it can be supplied to the transfer pipe 120 through the first pipe 522.

Meanwhile, the second pipes 523 composed of several strands may be covered with the covering member 523a, and the covering member 523a accommodating the second pipe 523 may be connected to the third pipe 524. You can have it.

Meanwhile, the control plate 525 controls the flow of effective gas between the second pipe 523, more specifically, the covering member 523a and the third pipe 524.

Since effective gases of different components flow inside each of the plurality of second pipes 523, the control plate 525 is connected between the second pipe 523 and the third pipe 524. ) is communicated with the third pipe 524 so that only one type of effective gas can be supplied to the third pipe 524.

The control plate 525 has a symmetrical first insertion part 525b inserted into the third pipe 524 and a second insertion part 525d inserted into the covering member 523a with respect to the flange 525c in the center. It has a structure that is formed sequentially, and in this state, the communication hole 525a can be configured to simultaneously penetrate the first insertion part 525b, the flange 525c, and the second insertion part 525d.

Accordingly, when the flange 525c exposed to the outside between the covering member 523a and the third pipe 524 is rotated, the communication hole 525a is formed into a plurality of second pipes 523 accommodated inside the covering member 523a. ) is provided with a structure that communicates with one of the second pipes 523 and the third pipe 524, and the second pipe 523 excluding the second pipe 523 in communication with the third pipe 524 is provided. The ends of the pipes 523 are naturally blocked by the second insertion portion 525d, making it impossible for effective gas to be supplied to the third pipe 524.

The effective gas moving from the reservoir tank 521 to the first pipe 522 may be continuously drawn toward the transfer pipe 120 by the suction force acting on the first pipe 522.

This is because a differential pressure is generated between the transfer pipe 120 and the first pipe 522 by the high-pressure air flowing in the transfer pipe 120, and accordingly, the end of the first pipe 522 connected to the transfer pipe 120 A suction force due to negative pressure acts to create a structure in which the effective gas in the first pipe 522 is naturally drawn toward the transfer pipe 120 and absorbed into the cotton.

The cotton containing the active ingredient of the additive is delivered to the web forming unit 200 by the discharge member 130 by the expansion unit 100 and the vaporization unit 500.

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The web forming unit 200 presses the cotton delivered from the discharge member 130 to form a web with a fabric structure. The web forming unit 200 sequentially and repeatedly presses the cotton to form a web and has a structure that allows the web to be folded and stored for the convenience of adhesive application.

For this purpose, the web forming unit 200 includes a plurality of pressure transfer rollers that receive the cotton stored in the discharge member 130, pressurize it, and move it, and a rising conveyor 230 that raises the web formed by the pressure transfer rollers upward. ) and the web raised by the rising conveyor 230 is delivered, one end is rotatably installed around the top of the rising conveyor 230, and the other end is disposed downward in the form of a free end to move the web downward according to the swing action. It is characterized by including a swing conveyor 240 that discharges and folds.

The plurality of pressure transfer rollers may be composed of a main pressure roller 210 and an auxiliary pressure roller 220 disposed around the main pressure roller 210, and the cotton is between the main pressure roller 210 and the auxiliary pressure roller 220. As they pass through, they become entangled together and are processed into a pressed form.

The web processed in this way moves upward on the rising conveyor 230, then rotates downward again by the swing conveyor 240 and is folded and stored in the storage box 250.

As shown in FIG. 6, one end of the swing conveyor 240 is rotatably mounted on the swing pivot axis 260, and the other end swings with a certain curvature. That is, when the web is discharged downward along the swing conveyor 240 and the swing conveyor 240 swings, the web is naturally folded and stored inside the storage box 250.

The swing rotation axis 260 may be provided on a steel structure (not shown) so that the rising conveyor 230 is spaced apart from the ground.

The web stored folded in the storage box 250 is put into the adhesive application unit 300 and adhesive is applied to the surface, giving it a tough texture unique to non-woven fabric.

Next, as shown in FIG. 7, the adhesive application unit 300 includes a pair of adhesive rollers 310 through which a large web passes, parallel to the longitudinal direction of the adhesive rollers 310 at the top of the adhesive rollers 310. A guide frame 320 that extends, a nozzle assembly 340 that reciprocates along the guide frame 320 and supplies adhesive to the top of the adhesive roller 310, and are installed spaced apart from each other on the guide frame 320. and a pair of return switches 350 that generate a contact signal when the nozzle assembly 340 is contacted, a driving member 360 that reciprocates the nozzle assembly 340 along the guide frame 320, and the pair. It may be defined as including a storage tank 370 in which the adhesive falling downward from the adhesive roller 310 is stored.

The adhesive rollers 310 are provided in pairs and each contacts both sides of the web fed between them to uniformly apply the adhesive supplied from the nozzle assembly 340 to the surface of the web. Although not shown, it is of course possible to provide a means to rotate the pair of adhesive rollers 310 in different directions.

The guide frame 320 supports the nozzle assembly 340, the driving member 360, etc., and particularly provides a reciprocating movement path for the nozzle assembly 340. Both ends of the guide frame 320 are supported by the main frame 330 and may be spaced upward from the ground.

The nozzle assembly 340 receives adhesive from a separate adhesive supply source and supplies the adhesive toward the adhesive roller 310 disposed at the lower part of the guide frame 320.

The supplied adhesive is applied to the surface of the web passing between a pair of adhesive rollers 310, and the remaining amount remains on the surface of the adhesive roller 310 to form the adhesion member 380 and removal member 390, which will be described later. It can be completely removed from the surface of the adhesive roller 310 by interaction.

The nozzle assembly 340 is engaged with a driving member 360 while mounted on the guide frame 320, and the driving member 360 reciprocates the nozzle assembly 340 between the pair of return switches 350. It provides the driving force to move.

A pair of return switches 350 are each disposed at both ends of the guide frame 320, and the nozzle assembly 340 travels on the guide frame 320 by the driving member 360 and turns on either return switch 350. When contacted, a contact signal is generated to control the driving direction of the driving member 360.

Meanwhile, the driving member 360 is wound in an endless track around a pair of pulleys 361 installed spaced apart from each other on the guide frame 320, and includes a transfer belt 362 on which the nozzle assembly 340 is mounted on the outside, and the It includes a step motor 363 that rotates at least one of the pair of pulleys 361 in the forward or reverse direction, and the step motor 363 changes the direction of rotation according to a contact signal to move the transport belt 362. The nozzle assembly 340 mounted on is moved back and forth.

The step motor 363 is linked to one of a pair of pulleys 361. When the step motor 363 rotates, the pulley 361 rotates in conjunction with it, and the step motor 363 is wound in an endless orbit around the pulley 361. This is the principle of reciprocating the nozzle assembly 340 in a straight line while the transfer belt 362 rotates.

At this time, the step motor 363 changes the rotation direction according to the occurrence of the contact signal. For example, the nozzle assembly 340 moves in the direction of the arrow shown in FIG. 9 and contacts the return switch 350 on one side. When a contact signal is generated, the rotational drive direction of the step motor 363 is switched to the reverse direction, and the moving direction of the nozzle assembly 340 turns and travels in the direction of the arrow shown in FIG. 6.

That is, the nozzle assembly 340 moves back and forth in the distance between the pair of return switches 350 and evenly supplies adhesive to the upper part of the adhesive roller 310.

Meanwhile, the adhesive provided on the top of the adhesive roller 310 accumulates on the top of the adhesive roller 310 as time passes, as shown in FIG. 11. If the adhesive is not discharged smoothly and accumulates on the adhesive roller 310, the adhesive flows down the outer surface of the adhesive roller 310 and irregularly penetrates the surface of the web passing between the pair of adhesive rollers 310 or the adhesive roller 310. It may cause viscosity on the surface of (310), causing the web to overlap into multiple layers.

The nonwoven fabric manufacturing apparatus according to the present invention quickly removes the adhesive accumulated on the adhesive roller 310, thereby enabling uniform supply of adhesive to the surface of the web.

To this end, the adhesive applicator 300 extends from the nozzle assembly 340 toward at least one of the pair of adhesive rollers 310 and makes contact, and reciprocates along the nozzle assembly 340 to apply adhesive rollers. An adhesion member 380 that adheres the adhesive remaining on the surface of the adhesive roller 310 to both ends of the adhesive roller 310, is installed at the lower part of the guide frame 320, and interlocks with the adhesion member 380 to attach the adhesive roller 310 to the adhesive roller 310. A removal member 390 that alternately contacts both ends of the 310 and removes the adhesive adhered by the adhesion member 380 from the adhesive roller 310, and a strainer disposed on the upper part of the storage tank 370 ( It has a configuration that further includes M).

The adhesion member 380 is similar to the concept of a wiper on an automobile glass and moves along the reciprocating direction of the nozzle assembly 340 to remove excess adhesive accumulated on the surface of the adhesive roller 310. It is attached closely to the end.

Then, the removal member 390 scoops up the excess adhesive adhered to both ends of the adhesive roller 310 by the adhesion member 380 and then drops it toward the storage tank 370.

The removal member 390 is inclined downward toward the adhesive roller 310 toward both ends and is formed at both ends of the rotating bar 392 and the rotating bar 392 that rotates about the central rotating axis 391. and a spatula (396) consisting of a first surface (393) in contact with the adhesive roller (310) and a second surface (394) bent downward from the first surface (393) and having a discharge hole (395). Includes, the adhesive scooped up with the spatula 396 flows from the first side 393 to the second side 394, is discharged through the discharge hole 395, and then passes through the strainer M into the storage tank 370. ) has a structure that flows into the

The rotating bar 392 has both ends gradually bent downward with respect to the central rotating axis 391. The rotating bar 392 can be rotated in conjunction with the movement of the nozzle assembly 340. In particular, when the rotating bar 392 is rotated, the spatulas 396 formed at both ends of the rotating bar 392 alternately rotate. It contacts the end of the adhesive roller 310.

When the nozzle assembly 340 moves in the direction of the arrow shown in FIG. 9, a portion of the adhesion member 380 lifts one side of the pivoting bar 392 and the other end of the pivoting bar 392 lowers in the direction of the adhesive roller 310. It is done. When the other end of the rotating bar 392 is lowered in the direction of the adhesive roller 310, the spatula 396 provided on the other end of the rotating bar 392 is ready to scoop up the excess adhesive adhered to the end by the adhesion member 380. It's done.

Next, when the moving direction of the nozzle assembly 340 is changed in the direction of the arrow shown in FIG. 10, a part of the adhesion member 380 lifts the other side of the rotating bar 392 and the spatula provided on the other end of the rotating bar 392 (396) This is the principle of scooping up excess adhesive.

That is, when the nozzle assembly 340 moves back and forth, the removal member 390 rotates repeatedly in a seesaw-like principle, and the spatula 396 scoops up the excess adhesive pushed to both ends of the adhesive roller 310. .

The excess adhesive scooped up with the spatula (396) is discharged through the discharge hole (395) of the second side (394) and falls into the storage tank (370). In the process of falling into the storage tank (370), the excess adhesive (M) is used. It will pass.

The adhesive that has passed through the strainer M is stored in the storage tank 370 with foreign substances contained in the adhesive filtered out, and the adhesive stored in the storage tank 370 may have a circulation structure in which it is returned to the adhesive supply source.

Meanwhile, as shown in FIG. 12, the adhesion member 380 extends from the nozzle assembly 340 toward the adhesive roller 310 and includes a main arm 382 having a wiper means 381 at the end, and the main arm ( It may be exemplified as a configuration including a sub-arm 383 that protrudes from 382 toward the removal member 390 and contacts the rotating bar 392.

The wiper means 381 is made of a silicone material and has a structure that can elastically adhere to the surface of the adhesive roller 310, and the sub-arm 383 contacts the pivot bar 392 to It is responsible for the action of pushing up.

Vibration generating protrusions 397 may protrude below both end points of the rotating bar 392 to generate vibration throughout the removal member 390 upon contact with the sub-arm 383.

When the sub-arm 383 repeatedly contacts the vibration generating protrusion 397 in the process of lifting the rotating bar 392 and applies vibration to the removal member 390 itself, this vibration is transferred to the spatula 396 and the spatula is The flowability of the adhesive pumped up through (396) is improved, allowing the adhesive to flow into the discharge hole (395) more quickly.

In addition, as shown enlarged in FIG. 8, the first surface 393 is provided with a stopper 398 to prevent the adhesive scooped up by the spatula 396 from overflowing in the direction opposite to the direction in which the second surface 394 is formed. can be formed.

If the adhesive is overflowed in a direction opposite to the direction in which the second surface 394 is formed, the adhesive scooped up by the spatula 396 may flow back toward the adhesive roller 310.

Figure 14 is a diagram showing another embodiment of the adhesion member 380. In this embodiment, the adhesion member 380 extends downward from the main arm 382 to cover the web discharged from the adhesive roller 310. It may be illustrated as further including a spacing member 384 that is pressed and spaced apart from the adhesive roller 310.

The spacing member 384 serves to space the adhesive roller 310 and the web from each other to prevent the web discharged from the adhesive roller 310 from being wound around the adhesive roller 310 again.

For example, the spacing member 383 includes a first spacing arm 385 extending from the main arm 382, rotatably mounted on an end of the first spacing arm 385, and having an end in contact with the web. It may be illustrated as a configuration including a second spacing arm 386 on which the ball caster member 388 is provided and an elastic spring 387 interconnected to the first spacing arm 385 and the second spacing arm 386. You can.

In other words, the spacing member 384 presses the web discharged from the adhesive roller 310, and because it has an elastically rotating joint structure, it can pressurize the web with minimal pressure. In particular, the ball caster member 388 ) does not cause problems such as slippery contact with the surface of the web when the spacing member 384 reciprocates along the nozzle assembly 340 and pressurizes the web, thereby reducing the density of the adhesive-coated web.

The ball caster member 388 includes, for example, a steel ball 388a, a housing 388c that forms a channel 388b to accommodate the steel ball 388a, and exposes a portion of the steel ball 388a to the bottom. ) and a spacing ball 388d interposed between the wall of the channel 388b and the steel ball 388a, but it is revealed that modifications can be made to the structure of various known ball casters.

The web containing the adhesive passes through the adhesive application unit 300 and is transferred to the drying unit to dry the adhesive. The drying unit can be configured in various ways to provide hot air toward the web being transported in one direction.

The heating unit 400 may be composed of a plurality of heating rollers 420, and the adhesive dries as it sequentially passes through the plurality of heating rollers 420, forming a non-woven filter fabric with a tough and rough texture unique to non-woven fabric. do.

The heating unit 400 may include a pair of rolling rollers 410 formed at the discharge end of the heating roller 420. A pair of rolling rollers 410 processes the web by hot rolling on both sides.

At this time, the rolling roller 410 may be set to 120°C. When the web passes through the rolling roller 410 set to these temperature conditions, only the first cotton that makes up the web and has a melting point of 120°C or lower is partially melted in the web.

As this molten part is cooled, hardened solid particles are formed in the web, thereby improving the hardness and shape retention of the web. When a mask is manufactured with such a filter, sufficient hardness and shape retention can be provided without the need for a separate support layer other than the filter.

The embodiments of the present invention described above are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims. In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

10: Raw material supply department
100: expansion part
200: Web forming unit
300: Adhesive application unit
400: heating unit
500: vaporization unit
600: Drying unit

Claims (5)

A raw material supply department that supplies cotton;
An expansion unit that expands the tangled cotton supplied from the raw material supply unit;
A web forming unit that collects the expanded cotton supplied from the expansion unit and processes it into a web shape;
an adhesive application unit that applies adhesive to the web formed from the web forming unit;
A drying unit that dries the adhesive applied to the web;
A heating unit that heats the web that has passed through the drying unit to form a non-woven filter fabric; and
It includes a vaporization unit that supplies effective gas to the expansion unit and allows the effective gas to penetrate the expanded cotton,
The expansion part,
Envelope-shaped case;
A transfer pipe through which cotton is transferred; and
It includes a blower that injects high-pressure air into the transfer pipe to transport the cotton to the case,
The vaporization unit is installed on the path of the transfer pipe and supplies effective gas to the cotton passing through the transfer pipe,
The vaporization unit,
a chamber in which additives are stored and vaporizing the stored additives to generate effective gas; and
A functional mask non-woven filter manufacturing device comprising a gas transfer line that connects the transfer pipe and the chamber and through which the effective gas generated in the chamber is transferred. delete delete In claim 1,
The chamber is provided in plural pieces to individually store different types of additives,
The gas transfer line is,
A reservoir tank in which effective gas is stored;
A first pipe connecting the reservoir tank and the transfer pipe;
a plurality of second pipes extending from each of the plurality of chambers;
a third pipe connected at one end to the reservoir tank and at the other end to the plurality of second pipes; and
A control plate rotatably installed between the second pipe and the third pipe and through which a communication hole communicating with at least one of the plurality of second pipes passes. A functional mask non-woven filter manufacturing apparatus comprising a. In claim 1,
The adhesive application part,
a pair of adhesive rollers through which the web passes;
a guide frame extending parallel to the longitudinal direction of the adhesive roller from an upper portion of the adhesive roller;
a nozzle assembly that reciprocates along the guide frame and supplies adhesive to the top of the adhesive roller;
a pair of return switches installed on the guide frame to be spaced apart from each other and generating a contact signal when the nozzle assembly is contacted;
A driving member that reciprocates the nozzle assembly along the guide frame; and
It includes a storage tank in which the adhesive that falls below the pair of adhesive rollers is stored,
The driving member is,
a transfer belt wound in an endless track around a pair of pulleys spaced apart from each other on the guide frame and on which the nozzle assembly is mounted on the outside; and
It includes a step motor that rotates at least one of the pair of pulleys in the forward or reverse direction,
The step motor is a functional mask non-woven filter manufacturing device, characterized in that it reciprocates the nozzle assembly mounted on the transfer belt by changing the direction of rotation according to the contact signal.

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