KR102698514B1 - Paper straw manufacturing system that can be cut and wrinkled at the same time - Google Patents

Abstract

The present invention relates to a paper straw manufacturing system, and more particularly, to a paper straw manufacturing system capable of forming wrinkles at the same time as cutting a spare straw that is heated by hot air and wound around a core rod, thereby shortening the manufacturing time for a paper straw provided with wrinkles, and further, to a paper straw manufacturing system capable of forming wrinkles at the same time as cutting, wherein a heating wire is installed inside a core rod to transfer heat to the spare straw when forming wrinkles to make it flexible and then form wrinkles, so that the wrinkles are stably maintained even after cooling.

Description

Paper Straw Manufacturing System That Can Be CUT AND WRINKLED AT THE SAME TIME

The present invention relates to a paper straw manufacturing system, and more particularly, to a paper straw manufacturing system capable of forming wrinkles at the same time as cutting a spare straw that is heated by hot air and wound around a core rod, thereby shortening the manufacturing time for a paper straw provided with wrinkles, and further, to a paper straw manufacturing system capable of forming wrinkles at the same time as cutting, wherein a heating wire is installed inside a core rod to transfer heat to the spare straw when forming wrinkles to make it flexible and then form wrinkles, so that the wrinkles are stably maintained even after cooling.

Disposable beverage containers provided by convenience stores, marts, cafes, etc. are usually provided with a straw of a certain length so that users can easily drink the packaged beverage.

Conventional straws were often made of plastic materials. Plastic straws have the advantages of being easy to process, low manufacturing costs, light weight, and not causing problems with other ingredients mixing into the drink when used. However, due to the nature of the material, it takes a long time to decompose after being discarded, and it is also harmful to the human body, so there are growing calls to replace them.

As a solution to this demand, methods for reusing manufactured straws or replacing the components of the straws themselves with environmentally friendly materials are continuously being developed. For example, straws made of reusable plastic or metal are being proposed. However, straws are often used for business purposes, and in this case, there are limitations to reusing straws due to hygiene or the infrastructure structure of each business.

For this reason, disposable straws made of paper materials have been proposed recently. Disposable straws made of paper materials are not only harmless to the human body, but also have sufficient value to replace conventional plastic straws in that they minimize environmental pollution.

Such paper straw manufacturing systems are published in Korean Patent Publication Nos. 10-1973367 and 10-2197630, etc.

The above-mentioned Korean Patent Publication No. 10-1973367 paper straw manufacturing device, as illustrated in FIG. 1, comprises a first supply unit (100) for supplying a first paper sheet (10) forming the inner surface of a paper straw, a second supply unit (200) for supplying, together with the first supply unit (100), second and third paper sheets (20, 30) forming the middle and outer surfaces of the paper straw, an adhesive application unit (204) for applying adhesive to the lower surfaces of the second and third paper sheets (20, 30) so that the first to third paper sheets (10, 20, 30) are joined to manufacture a paper straw (40), a pressing and transfer unit (300) configured to press the joint surface of the joined paper straw (40) using a plurality of band members and simultaneously transfer it in the axial direction, and a cutting unit for cutting the transferred paper straw (40) to a predetermined size. It is composed of a cutting device (400) and a frame part (500) in which all components for manufacturing paper straws are connected and installed.

The paper straw manufacturing system, which is the above-mentioned Republic of Korea Patent Publication No. 10-2197630, as illustrated in FIGS. 2 and 3, comprises a roll (2) having a paper strip having a heat-bonding coating material provided on at least one surface, a core rod (110) on which the paper strip unwound from the roll is wound around its outer peripheral surface, a heater (120) for heating the heat-bonding coating material of the paper strip, a belt (130) for twisting the paper strip around the core rod to form a spare straw, a moving guide part (140) for advancing the spare straw along the longitudinal direction of the core rod, and a cutting part (150) for cutting the advanced spare straw to form a straw.

However, these conventional paper straw manufacturing systems have the problem of not being able to form wrinkles in paper straws.

Meanwhile, according to the method for manufacturing a corrugated paper straw, which is the Korean Patent Publication No. 10-2280619, as illustrated in FIG. 4, the method comprises: a first step (S10) of loading a bundle of flat paper sheets; a second step (S20) of cutting the bundle of paper sheets into a preset length to form a body part (1); a third step (S30) of supplying the body part (1); a fourth step (S40) of coating the body part (1) by spraying a coating composition onto the body part (1), wherein the coating composition is a mixture of heptane, water, 50 w/w% alcohol, and 8 w/w% alcohol, and then coating it; a fifth step (S50) of applying an adhesive to a joint (2), which is an end of the coated body part (1), wherein the adhesive is a mixture of water and a polymer of vinyl acetate, butyl acrylate, and polyvinyl alcohol. It consists of a sixth step (S60) of forming the body part (1) by connecting the joint part (2) to which the adhesive is applied; a seventh step (S70) of performing heat treatment on the joint part (2) and compressing it; an eighth step (S80) of performing heat treatment to form a wrinkled pipe part (20) in which wrinkles are formed in the body part (1); and a ninth step (S90) of injecting a paper straw in which an injection part (10) that touches the lips and a moving part (30) that touches the beverage are formed at the upper end of the wrinkled pipe part (20) through the formation of the wrinkled pipe part (20).

However, this conventional method of manufacturing corrugated paper straws has the problem that mass production is difficult because the paper straws are individually made and then corrugated after heat treatment, which relatively increases the manufacturing time.

Republic of Korea Patent Publication No. 10-1973367 Republic of Korea Patent Publication No. 10-2197630 Republic of Korea Patent Publication No. 10-2280619

The present invention is intended to solve the above problems, and provides a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting, thereby shortening the manufacturing time of a paper straw provided with wrinkles by forming wrinkles simultaneously with cutting a spare straw that is heated by hot air and wound around a core rod.

In addition, the present invention has another purpose of providing a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting, by installing a heating wire inside a core rod to transfer heat to a spare straw when forming wrinkles to make it flexible and then forming wrinkles so that the wrinkles are stably maintained even after cooling.

The features of the present invention to achieve the above purpose are:

A paper straw manufacturing system comprising: a roll having paper strips wound thereon, each paper strip divided into an inner strip, an inner strip, and an outer strip, each paper strip having a heat-sealing coating material provided on at least one surface; an input position adjusting unit for adjusting an input position of the paper strip; a core rod on which a paper strip unwound from the roll is wound around its outer surface; a heater for heating the heat-sealing coating material of the paper strip; a belt for twisting the paper strip around the core rod to form a spare straw; and a cutting unit for cutting the running spare straw to form a straw, wherein the cutting unit comprises: a base frame having a pair of first LM guides formed on an upper surface thereof in the longitudinal direction, a first ball screw and a first rotation motor for rotating the first ball screw back and forth at one end between the first LM guides; a sliding bracket for sliding back and forth along the first LM guide of the base frame by forward and reverse rotation of the first ball screw; a rotating unit installed on an upper surface of the sliding bracket for rotating the spare straw that is running along the core rod to the sliding bracket; And it is characterized by including a cutting unit in which a plurality of sliding brackets are installed at equal intervals and raised and lowered by pneumatic pressure, and a cutting blade and a pleating blade are rotated to cut the spare straw to a predetermined length and form a plurality of pleats at the same time.

Here, the sliding bracket is bent into a V shape and installed on the same line as the core rod, and a guide plate is provided to prevent the cut paper straw from falling due to the advancement of the sliding bracket.

Here, the rotating unit also includes a pair of guide rollers that are mutually faced each other in the forward and backward direction of the sliding bracket so that the core rod is secured; a second rotating motor that rotates the guide rollers; and a support roller that is installed on the bottom surface of the guide rollers so that the cutting unit prevents the guide rollers from sagging when cutting.

Here, the rotating unit is also provided with guide jaws at the front and rear ends of the guide roller to prevent the core rod from coming off.

Here, the cutting unit is configured with a rotary shaft that is installed to rotate longitudinally in the forward and backward direction from the sliding bracket and has first pulleys provided at equal intervals; a third rotary motor that rotates the rotary shaft; a body bracket that is installed at equal intervals from the rotary shaft and has a pneumatic cylinder installed vertically at the upper portion; a tilting head that is coupled to the rotary shaft and tilts up and down according to the action of the pneumatic cylinder at a side surface of the body bracket; a cutting blade that is installed in front of the tilting head and has a second pulley that is coupled to the first pulley of the rotary shaft by a belt at one side and cuts the spare straw while rotating according to the rotation of the rotary shaft; and a plurality of wrinkle blades that are installed at equal intervals on the axis of the cutting blade and form wrinkles in the spare straw.

Here again, the wrinkle blade is formed smaller than the diameter of the cutting blade to form only a wrinkle line on the spare straw.

Here, the cutting unit further includes a second ball screw on the upper part of the body bracket in the sliding bracket to adjust the gap of the body bracket; and a pair of second LM guides installed on the back surface of the body bracket in the sliding bracket to adjust the gap of the body bracket.

Here, the core rod is equipped with a heating wire inside to apply heat to prevent the wrinkles from being straightened when the wrinkles are formed by the wrinkle blade of the cutting unit.

According to the paper straw manufacturing system capable of forming wrinkles while cutting at the same time as the present invention, which is configured as described above, the manufacturing time of a paper straw provided with wrinkles is shortened by forming wrinkles while cutting a spare straw that is heated by hot air and wound around a core rod, and the manufacturing cost is reduced by simplifying the process, and mass production is possible.

In addition, according to the present invention, by installing a heating wire inside the core rod to transfer heat to the spare straw when forming wrinkles to make it flexible and then forming wrinkles, the wrinkles can be stably maintained even after cooling.

Figures 1 to 3 are drawings showing the configuration of a conventional paper straw manufacturing system.
Figure 4 is a process diagram explaining a conventional method for manufacturing a corrugated paper straw.
Figure 5 is a schematic diagram schematically showing the configuration of a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting according to the present invention.
Figures 6 and 7 are perspective views showing the configuration of a cutting section in a paper straw manufacturing system capable of forming wrinkles while cutting at the same time according to the present invention.
Figure 8 is a front view of Figure 6.
FIG. 9 is a perspective view showing the configuration of a base frame in a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting according to the present invention.
Figures 10 to 12 are perspective views showing the configuration of a cutting unit in a paper straw manufacturing system capable of forming wrinkles while cutting at the same time according to the present invention.
FIG. 13 and FIG. 14 are perspective views showing the configuration of a paper straw manufactured by a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting according to the present invention.

Hereinafter, the configuration of a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting according to the present invention will be described in detail with reference to the attached drawings.

In the following description of the present invention, if it is judged that a specific description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the terms described below are terms defined in consideration of the functions in the present invention, and these may vary depending on the intention or custom of the user or operator. Therefore, the definitions should be made based on the contents throughout this specification.

FIG. 5 is a schematic diagram showing the configuration of a paper straw manufacturing system capable of cutting and forming wrinkles at the same time according to the present invention, FIGS. 6 and 7 are perspective views showing the configuration of a cutting unit in a paper straw manufacturing system capable of cutting and forming wrinkles at the same time according to the present invention, FIG. 8 is a front view of FIG. 6, FIG. 9 is a perspective view showing the configuration of a base frame in a paper straw manufacturing system capable of cutting and forming wrinkles at the same time according to the present invention, FIGS. 10 to 12 are perspective views showing the configuration of a cutting unit in a paper straw manufacturing system capable of cutting and forming wrinkles at the same time according to the present invention, and FIGS. 13 and 14 are perspective views showing the configuration of a paper straw manufactured by a paper straw manufacturing system capable of cutting and forming wrinkles at the same time according to the present invention.

Referring to FIGS. 5 to 14, a paper straw manufacturing system (100) capable of forming wrinkles simultaneously with cutting according to the present invention is composed of a roll (110), a core rod (120), an input position adjusting unit (130), a heater (140), a belt (150), and a cutting unit (160).

First, a roll (110) is wound with each paper strip (A) divided into an inner strip (A1), a middle strip (A2), and an outer strip (A3) provided with a heat-sealing coating material on at least one side.

And, the core rod (120) is continuously wound in the shape of a straw with a paper band (A) released from the roll (110).

The core rod (120) is equipped with a heating wire (not shown) inside to apply heat to prevent the wrinkle (S1) from spreading out when the wrinkle (S1) is formed by the wrinkle blade (C2) of the cutting unit (166).

In addition, the input position control unit (130) is installed between the roll (110) and the heater (140) to control the input position of the paper strip (A).

The input position adjustment unit (130) serves to specify the position of the paper band (A) fed into the core rod (110). In addition, the input position adjustment unit (130) increases the tension of the paper band (A) so that the paper band (A) can be tightly wound around the core rod (120). To increase the tension, the input position adjustment unit (180) is provided in pairs so that the paper band can be fed through the middle of the pair, and can move in the thickness direction and the width direction of the paper band (A).

In addition, the heater (140) heats the paper strip (A) wound around the core rod (120). The heat-adhesive coating material of the heated paper strip (A) melts instantaneously and hardens, thereby providing an adhesive force that fixes the paper strip (A) wound in the shape of a straw.

Continuing, the belt (150) presses the paper band (A) against the core rod (120) so that the paper band (A) can be wound in close contact with the core rod (120). The paper band (A) pressed by the belt (150) is wound around the core rod (120) to form a spare straw (S').

Next, the cutting section (160) is composed of a base frame (161), a sliding bracket (163), a rotating unit (165), and a cutting unit (167) as shown in FIGS. 8 to 12.

The base frame (161) has a pair of first LM guides (LM1) formed longitudinally on the upper surface, a first ball screw (B1) at one end between the first LM guides (LM1), and a first rotation motor (M1) that rotates the first ball screw (B1) back and forth.

The sliding bracket (163) slides back and forth by the forward and reverse rotation of the first ball screw (B1) along the first LM guide (LM1) of the base frame (161).

The sliding bracket (163) is bent into a V shape and installed on the same line as the core rod (120), and a guide plate (163a) is provided to prevent the cut paper straw (S) from falling due to the forward movement of the sliding bracket (163).

The rotating unit (165) is installed on the upper surface of the sliding bracket (163) to rotate the spare straw (S') discharged from the core rod (120) to the sliding bracket (163), and is composed of a pair of guide rollers (R1) that are long and mutually interlocked in the front-back direction of the sliding bracket (163) so that the core rod (120) is secured, a second rotating motor (M2) that rotates the guide roller (R1), and a support roller (R2) that is installed on the lower surface of the guide roller (R1) so that the cutting unit (167) prevents the guide roller (R1) from sagging during cutting.

The rotating unit (165) is equipped with a guide projection (165a) at the front and rear ends of the guide roller (R1) to prevent the core rod (120) from coming off.

The cutting unit (166) is formed by a rotation axis (X), a third rotation motor (M3), a body bracket (166a), a tilting head (H), a cutting blade (C1), and a wrinkle blade (C2).

The rotation axis (X) is installed to rotate longitudinally in the forward and backward direction on the sliding bracket (163), and the first pulley (P1) is provided at equal intervals.

The third rotary motor (M3) rotates the rotary axis (X).

The body bracket (166a) is installed at equal intervals on the rotation axis (X), and a pneumatic cylinder (AS) is installed vertically on the upper part.

The tilting head (H) is coupled to the rotation axis (X) and tilts up and down according to the action of the pneumatic cylinder (AS) on the side of the body bracket (166a) to bring the cutting blade (C1) and the wrinkle blade (C2) into pressure contact with the spare straw (S').

A cutting blade (C1) is installed in front of a tilting head (H), and is provided with a first pulley (P1) of a rotation axis (X) on one side and a second pulley (P2) coupled by a belt, so that it descends as the tilting head (H) descends and rotates as the rotation axis (X) rotates, thereby cutting a spare straw (S') to manufacture a paper straw (S).

The pleated blade (C2) is installed at equal intervals in multiple pieces on the axis of the cutting blade (C1) and is lowered and rotated together with the cutting blade (C1) to form a pleat (S1) in the spare straw (S') so that the pleated portion of the paper straw (S) can be used to bend it. At this time, the pleated blade (C2) is formed smaller than the diameter of the cutting blade (C1) so as to form only a pleat line in the paper straw (S), and it is preferable that the number of pleats (S1) is formed to be about 3 to 7. Meanwhile, the paper straw (S) is manufactured in a straight shape as illustrated in FIG. 13 or in a U shape as illustrated in FIG. 14.

Meanwhile, it is preferable that the cutting unit (166) further comprises a second ball screw (B2) installed on the upper side of the body bracket (166a) in the sliding bracket (163) to adjust the gap of the body bracket (166a), and a pair of second LM guides (LM2) installed on the back surface of the body bracket (166a) in the sliding bracket (163) to adjust the gap of the body bracket (166a).

Hereinafter, the operation of a paper straw manufacturing system capable of forming wrinkles simultaneously with cutting according to the present invention will be described in detail with reference to the attached drawings.

First, as the inner band (A1), the middle band (A2), and the outer band (A3) from the roll (110) pass through the heater (140) via the input position control unit (130), the heat-bonding coating material of the heated paper band (A) is instantly melted and is wound in a straw shape and discharged from the core rod (120) by the belt (150).

And, when a spare straw (S') of a certain length is fed into the cutting section (160) from the core rod (120), the sliding bracket (163) advances along the base frame (161) at the same speed as the discharge speed of the spare straw (S').

At the same time, the rotating unit (165) rotates to rotate the spare straw (S'), and the cutting unit (166) descends to rotate the cutting blade (C1) and the pleating blade (C2).

As the cutting blade (C1) and the pleating blade (C2) rotate and come into contact with the spare straw (S'), the cutting blade (C1) cuts the spare straw (S') to produce a paper straw (S), and at the same time, the pleating blade (C2) forms pleats (S1) in the spare straw (S') as many as the number of blades.

Afterwards, the paper straw (S) is discharged along the core rod (120) and collected, and after the cutting unit (166) is raised, the sliding bracket (163) is returned to the original position.

Therefore, according to the present invention, by forming wrinkles in a preliminary straw that is heated by a heater and not cooled at the same time as cutting, the wrinkles are prevented from spreading out, and the manufacturing process is shortened, so that paper straws with wrinkles formed in large quantities can be formed.

The present invention is capable of various modifications and takes many forms, and in the above detailed description of the invention, only specific embodiments thereof have been described. However, it should be understood that the present invention is not limited to the specific forms mentioned in the detailed description, but rather should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.

110: Roll 120: Core Bong
130: Input position control unit 140: Heater
150: Belt 160: Cutting part
161: Base Frame 163: Sliding Bracket
165: Rotating unit 167: Cutting unit
A: Paper strip S: Paper straw
S1: Wrinkle S': Spare straw

Claims (6)

A paper straw manufacturing system comprising: a roll having paper strips wound thereon, each paper strip divided into an inner strip, an inner strip, and an outer strip, each paper strip having a heat-sealing coating material provided on at least one side; an input position adjusting unit for adjusting an input position of the paper strip; a core rod having a heating wire for preventing the wrinkles from being straightened when the paper strip unwound from the roll is formed, the core rod having an outer circumference thereof on which the paper strip is wound; a heater for heating the heat-sealing coating material of the paper strip; a belt for twisting the paper strip around the core rod to form a spare straw; and a cutting unit for cutting the running spare straw to form a straw.
The above cutting part is,
A base frame having a pair of first LM guides formed longitudinally on an upper surface, a first ball screw and a first rotation motor for rotating the first ball screw back and forth provided at one end between the first LM guides;
A sliding bracket that slides back and forth along the first LM guide of the base frame by the forward and reverse rotation of the first ball screw, is bent in a V shape, and is installed on the same line as the core rod, and is provided with a guide plate to prevent the cut paper straw from falling due to the forward movement of the sliding bracket;
A rotating unit installed on the upper surface of the sliding bracket to rotate the spare straw that advances along the core rod to the sliding bracket; and
A cutting unit is included, which is installed at equal intervals on the above sliding bracket and is raised and lowered by pneumatic pressure, and cuts the spare straw to a certain length while forming a plurality of wrinkles as the cutting blade and the wrinkle blade rotate.
The above rotating unit,
A pair of guide rollers that are mutually extended in the forward and backward direction of the sliding bracket so that the core rod is secured;
A second rotary motor for rotating the above guide roller;
A support roller installed on the lower surface of the guide roller to prevent the guide roller from sagging during cutting by the cutting unit; and
Including a guide jaw formed at the front and rear ends of the guide roller to prevent the core rod from coming off,
The above cutting unit,
A rotary shaft installed to rotate longitudinally in the forward and backward direction in the above sliding bracket and having first pulleys provided at equal intervals;
A third rotary motor for rotating the above rotary shaft;
A body bracket installed at equal intervals on the above rotation axis and having a pneumatic cylinder installed vertically at the top;
A tilting head coupled to the above rotational axis and tilted up and down according to the action of the pneumatic cylinder on the side of the body bracket;
The cutting blade is installed in front of the tilting head and has a second pulley coupled to the first pulley of the rotation shaft on one side by a belt, and cuts the spare straw while rotating according to the rotation of the rotation shaft;
A plurality of wrinkle blades are installed at equal intervals on the axis of the cutting blade to form wrinkles in the spare straw, but are formed smaller than the diameter of the cutting blade to form only 3 to 7 wrinkle lines in the spare straw;
A second ball screw on the upper part of the body bracket in the sliding bracket to adjust the gap of the body bracket; and
A paper straw manufacturing system capable of forming wrinkles while cutting, characterized in that it includes a pair of second LM guides installed on the back surface of the body bracket in the sliding bracket to adjust the gap of the body bracket. delete delete delete delete delete

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