KR20110119251A - Sealing device for vinyl bag - Google Patents

Sealing device for vinyl bag Download PDF

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Publication number
KR20110119251A
KR20110119251A KR1020100038855A KR20100038855A KR20110119251A KR 20110119251 A KR20110119251 A KR 20110119251A KR 1020100038855 A KR1020100038855 A KR 1020100038855A KR 20100038855 A KR20100038855 A KR 20100038855A KR 20110119251 A KR20110119251 A KR 20110119251A
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KR
South Korea
Prior art keywords
pressure roller
plastic bag
cover member
sealing device
heating wire
Prior art date
Application number
KR1020100038855A
Other languages
Korean (ko)
Inventor
안준영
Original Assignee
주식회사 제로팩
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 제로팩 filed Critical 주식회사 제로팩
Priority to KR1020100038855A priority Critical patent/KR20110119251A/en
Publication of KR20110119251A publication Critical patent/KR20110119251A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/16—Applying or generating heat or pressure or combinations thereof by rotary members

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for plastic bags, and more particularly, to a sealing device for plastic bags, which heat seals an opening of a plastic bag by a heating wire.
Sealing apparatus for a plastic bag of the present invention, the base member; A cover member coupled to the upper portion of the base member in a vertical direction; A heating member mounted to the base member and having a heating wire exposed to the outside; A power supply unit supplying power to the heating wire; A pressure roller rotatably mounted to the cover member and protruding in the direction of the heating member to heat seal the plastic bag disposed between and in contact with the heating member when the cover member is lowered; It is mounted to the cover member characterized in that made of a first spring to elastically support the pressing roller in the vertical direction.

Description

Sealing device for plastic bags {SEALING DEVICE FOR VINYL BAG}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for plastic bags, and more particularly, to a sealing device for plastic bags, which heat seals an opening of a plastic bag by a heating wire.

In general, it is made as a plastic bag packaging for the purpose of selling and storing food, and such bag packaging is formed at the entrance of the plastic bag packaging for storage when various foods such as confectionery, candy, etc., which are typically sold on the market, remain. In many cases, they are simply bundled or sealed by forceps.

In the case of a plastic bag mainly made of polypropylene or polyethylene material, once the opening is opened, the plastic bag is sealed for the purpose of storing the remaining food. If the sealing state is poor, air is introduced and the food is damaged. there was.

In view of the above, a sealing device (vinyl adhesive machine) has been developed, and a product has been devised so that the sealing of a plastic bag can be easily processed by only a simple contact as a portable device.

Such a sealing device has been disclosed in Republic of Korea Utility Model Registration No. 20-369995.

The sealing device is located between the upper body and the lower body to place the plastic bag to be sealed and then rotate the upper body to pressurize, power is supplied to the heating wire (nichrome wire) provided in front of the lower body, the heating wire is heated close The plastic bag was sealed by instantaneous thermal fusion.

That is, the conventional sealing device is hinged rotatably the upper body and the lower body, the user presses the upper body in a state in which the plastic bag placed between the upper body and the lower body to heat the heating wire after The sealing device was moved to heat seal the plastic bag.

However, in the conventional sealing device, when sealing the plastic bag by a heating wire, the plastic bag or the sealing device must be moved while the heating wire presses the plastic bag, but the plastic bag does not move well due to the pressing force of the heating wire. Or tearing may occur.

The present invention is to solve the above-mentioned problems, by mounting a pressure roller to prevent the plastic bag from moving and tearing well when the heat sealing of the plastic bag, the plastic bag is thick or the height difference of the pressure roller or the thickness of the plastic bag Another purpose is to provide a sealing device for a plastic bag that can be heat-sealed well.

Plastic bag sealing device of the present invention to achieve the above object, the base member; A cover member coupled to the upper portion of the base member in a vertical direction; A heating member mounted to the base member and having a heating wire exposed to the outside; A power supply unit supplying power to the heating wire; A pressure roller rotatably mounted to the cover member and protruding in the direction of the heating member to heat seal the plastic bag disposed between and in contact with the heating member when the cover member is lowered; It is mounted to the cover member characterized in that made of a first spring to elastically support the pressing roller in the vertical direction.

The pressure roller is spaced apart from the first pressure roller and the second pressure roller, the first spring is made of a wire rod, one end is hinged to the rotation center of the first pressure roller, the other end of the second pressure roller It is hinged to the center of rotation.

The first spring, the first coupling portion is hinged to the rotation center of the first pressing roller; A second coupling part hinged to the rotation center of the first pressing roller; The first coupling portion and the second coupling portion are interconnected, the upper portion is made of an elastic portion is prevented by the cover member, wherein the elastic portion is bent upwardly with respect to the first coupling portion and the second coupling portion Thus, the first coupling portion and the second coupling portion elastically supports in the vertical direction.

The width of the elastic portion is greater than the distance between the first coupling portion and the second coupling portion.

The heating wire is formed long in the rotational direction of the pressure roller, the heating wire is longer than the center length of the plurality of pressure rollers, the heating wire is in contact with at least two of the plurality of pressure rollers when the cover member descends. All.

The base member is formed to be concave and opened in an upward direction, and the receiving portion is formed with a first guide protrusion protruding upward, and the cover member protrudes downward and is inserted into the accommodation part. A guide hole into which two guide protrusions and the first guide protrusion are inserted is formed, and a second spring is mounted on the guide protrusion to elastically support the cover member in an upward direction, and the second guide protrusion protrudes in a circumferential direction. It is formed, the inner circumferential surface of the receiving portion is formed with a locking groove for engaging the locking projection after moving a predetermined distance in the vertical direction, to prevent the separation of the base member and the cover member by the elastic force of the second spring.

According to the sealing device for a plastic bag of the present invention as described above has the following effects.

Equipped with a pressure roller, it is possible to prevent the plastic bag to move well when tearing the plastic bag to tear.

In addition, since the first spring elastically supports the first pressure roller and the second pressure roller even when the plastic bag is thick, the height difference of the pressure roller, or the thickness of the plastic bag is different, heat sealing of the plastic bag is performed well. Can be lost.

1 is a perspective view of a sealing device for a plastic bag according to an embodiment of the present invention,
Figure 2 is an exploded perspective view of a plastic bag sealing device according to an embodiment of the present invention,
Figure 3 is an exploded perspective view of the other direction of the sealing device for a plastic bag according to an embodiment of the present invention,
Figure 4 is a perspective view of the pressing roller and the first spring according to an embodiment of the present invention,
5 is a cross-sectional view taken along line AA of FIG. 1;
6 is a cross-sectional view taken along line BB of FIG.
Figure 7 is a brief operation diagram showing the operating state of the sealing device for a plastic bag according to an embodiment of the present invention

1 is a perspective view of a sealing device for a plastic bag according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a one-way sealing device for a plastic bag according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention Another direction exploded perspective view of a sealing device for a plastic bag, Figure 4 is a perspective view of the pressing roller and the first spring according to an embodiment of the present invention, Figure 5 is a cross-sectional view taken along the line AA of Figure 1, Figure 6 It is sectional drawing which looked at the BB line of 1.

As shown in Figure 1 to 6, the sealing device for a plastic bag of the present invention, the base member 110, the cover member 120, the heating member 130, the power supply unit 140, pressurization It comprises a roller 150, the first spring 160.

On the upper surface of the base member 110 is formed a receiving portion 111 is formed concave and opened in the upper direction, the first guide protrusion 112 protrudes in the receiving portion 111 in the upward direction. .

A coil-shaped second spring 115 is mounted to the first guide protrusion 112.

In addition, a locking groove 113 is formed on the inner surface of the receiving portion 111 in the upward direction.

In addition, the base member 110 is formed with an insertion hole 114 in which the heating member 130 is inserted and exposed in front of the receiving portion 111.

The cover member 120 is coupled to the upper portion of the base member 110 so as to be movable in the vertical direction.

The cover member 120 may be hinged to the base member 110, but in this embodiment, the cover member 120 is coupled to the upper and lower directions of the base member 110 in an upward and downward direction.

In this embodiment, the cover member 120 is divided into a first cover 121 and a second cover 122.

A second guide protrusion 123 is formed on the first cover 121 to protrude downward and is inserted into the receiving portion 111, and the first guide is formed on an inner upper portion of the second guide protrusion 123. Guide hole 124 is formed is a projection 112 is inserted.

The second spring 115 surrounding the first guide protrusion 112 is disposed inside the first guide protrusion 112 to move the cover member 120 upward with respect to the base member 110. Elastic support.

That is, the upper surface of the second spring 115 is in contact with the lower surface of the first cover 121, the lower surface is in contact with the upper surface of the receiving portion 111.

The second cover 122 serves to cover the upper portion of the first cover 121.

In addition, the outer surface of the second guide protrusion 123 has a locking protrusion 125 is formed in the circumferential direction, the locking projection 125 is inserted into the locking groove 113 is the base member 110 And the cover member 120 are prevented from being separated by the elastic force of the second spring 115.

That is, the locking protrusion 125 is caught after moving a predetermined distance in the vertical direction while being inserted into the locking groove, so that the cover member 120 is lifted up and down with respect to the base member 110 and is not separated at the same time. It plays a role.

The heating member 130 is mounted so that an upper portion is exposed to the insertion hole 114 formed in front of the base member 110, and the heating wire 131 exposed to the outside is coupled to the upper portion.

In addition, a lower portion of the heating member 130 is mounted on the base member 110 to support a third spring 136, the lower portion of which is elastically supporting the heating member 130 upward.

Both ends of the heating wire 131 are exposed to the lower portion of the heating member 130, and a central portion thereof is exposed to the upper portion of the heating member 130.

The power supply unit 140 is inserted into the base member 110 and is selectively connected to the heating wire 131 to supply power to the heating wire 131.

A terminal 145 is coupled to the base member 110 to connect the power supply 140 to the heating wire 131, and the terminal 145 is always connected to the power supply 140. The hot wire 131 is selectively contacted.

That is, although the heating wire 131 and the terminal 145 are spaced apart by the third spring 136 in a free state, when the heating member 130 descends while compressing the third spring 136, the heating wire The heating wire 131 is heated by the power supplied from the power supply unit 140 in contact with each other 131 and the terminal 145.

The pressure roller 150 is rotatably mounted to the cover member 120, and a lower portion of the pressure roller 150 protrudes downwardly in the direction of the heating member 130.

The pressure roller 150 is in contact with the heating member 130 when the cover member 120 is lowered in detail and in contact with the heating wire 131 to heat seal the plastic bag (A) disposed therebetween. .

The pressure roller 150 may be made of only one, but preferably made of a plurality.

In this embodiment, the pressing roller 150 is composed of the first pressing roller 151 and the second pressing roller 152 is arranged to be spaced apart from each other in the arrangement direction of the heating wire 131.

That is, the heating wire 131 is formed long in the rotational direction of the pressure roller 150.

At this time, the length of the heating wire 131 exposed to the upper portion of the heating member 130, the center length of the pressure roller 150 made of a plurality, that is, the first pressure roller 151 and the second pressure roller 152 The heating wire 131 is in contact with the first pressing roller 151 and the second pressing roller 152 when the cover member 120 is lowered.

Therefore, when the cover member 120 is lowered, the first pressing roller 151 and the second pressing roller 152 come into contact with both the heating wire 131 with the plastic bag A interposed therebetween. Since the said plastic bag A is heat-sealed at two contacts, the said plastic bag A can be sealed more reliably.

The first spring 160 is mounted to the cover member 120 to elastically support the pressure roller 150 in the vertical direction.

The first spring 160 is to allow the pressure roller 150 to move upward when the thickness of the plastic bag (A) disposed between the pressure roller 150 and the heating member 130 is thick, Thick plastic bags (A) can also be heat sealed.

When the heights of the first press roller 151 and the second press roller 152 are different due to product tolerances, for example, the height of the lower surface of the first press roller 151 is the second press roller 152. If the first pressing roller 151 and the second pressing roller 152 is fixed when the lower than the height of the lower surface of the heating member 130 is only in contact with the first pressing roller 151, the second It is not in contact with the pressure roller 152, and the plastic bag A is heat-sealed only at a single contact point.

However, in the above state, when the first pressing roller 151 and the second pressing roller 152 are elastically supported by the first spring 160 to move in the vertical direction, the cover member 120 is As the first pressure roller 151 moves upward as the downward direction moves, both the bottom surface of the first pressure roller 151 and the bottom surface of the second pressure roller 152 are both heated with the heating member 130. It comes in contact with, so that the plastic bag (A) can be double sealed at the contact point.

In addition, when the thickness of the plastic bag A is different, the first pressing roller 151 and the second pressing roller try to move in the direction of the heating wire 131 by the elastic force of the first spring 160. Therefore, the first pressing roller 151 and the second pressing roller 152 can press the plastic bag (A) even in the portion where the thickness difference of the plastic bag (A).

The first spring 160 is made of a wire rod, one end is hinged to the rotation center of the first pressure roller 151, the other end is hinged to the rotation center of the second pressure roller 152.

The first spring 160 is hinged to the first coupling part 161 hinged to the rotation center of the first pressure roller 151 and the rotation center of the first pressure roller 151. The second coupling portion 162, the first coupling portion 161 and the second coupling portion 162 are interconnected, the upper portion is made of an elastic portion 163 that is prevented by the cover member 120 is raised. .

The elastic portion 163 is bent upward with respect to the first coupling portion 161 and the second coupling portion 162, the first coupling portion 161 and the second coupling portion 162 up and down Elastic support in the direction.

At this time, the width of the elastic portion 163 is greater than the distance between the first coupling portion 161 and the second coupling portion 162, the first coupling portion 161 and the second coupling portion 162. The lower portion of the elastic portion 163 can be compressed when is moved upwards.

Hereinafter, an operation process of the present invention having the above-described configuration will be described.

7 is an operation process diagram briefly showing the operating state of the sealing device for a plastic bag according to an embodiment of the present invention.

The cover member 120 is spaced upward from the base member 110 by the elastic force of the second spring 115 in the free state, that is, the external force is not applied.

At this time, the cover member 120 tries to continue to rise in the upward direction by the elastic force of the second spring 115, but the locking protrusion 125 is caught by the locking groove 113 and does not rise anymore. The cover member 120 and the base member 110 can be maintained in a mutually coupled state.

This state is shown in Figure 7 (a), in this state, the heating wire 131 and the terminal 145 are spaced apart from each other by the elastic force of the third spring 136, the pressure roller 150 And the heating member 130 are also spaced apart from each other.

Therefore, the plastic bag A may be inserted and disposed between the pressure roller 150 and the heating member 130.

When the plastic bag A is inserted and disposed between the pressing roller 150 and the heating member 130, the cover member 120 is pressed downward.

Then, as shown in Figure 7 (b), the pressing roller 150 and the first spring 160 is lowered with the cover member 120, the lower surface of the pressing roller 150 is the plastic bag It comes into contact with the heating wire 131 with (A) therebetween.

Until this time, since the heating member 130 is elastically supported upward by the third spring 136, the heating wire 131 and the terminal 145 are spaced apart from each other.

As the cover member 120 is further lowered, as shown in FIG. 7C, the heating member 130 is lowered such that both ends of the heating wire 131 come into contact with the terminal 145.

Then, the heating wire 131 is connected to the power supply unit 140 so that power is supplied, thereby heating the heating wire 131 and the vinyl disposed between the heating wire 131 and the pressure roller 150. The envelope A is heat sealed.

In this state, the user moves the plastic bag A or the sealing device to continuously heat seal the plastic bag A.

At this time, since the pressure roller 150 that can be rotated presses the upper portion of the plastic bag A, the plastic bag A moves better without tearing even when the plastic bag A is moved. It can be heat sealed.

On the other hand, if the user further lowers the cover member 120, as shown in Figure 7 (d) the elastic portion 163 of the first spring 160 is compressed, thereby the pressure roller 150 Is elastically supported in the direction of the heating wire 131 it is possible to strongly press the plastic bag (A) disposed between the pressure roller 150 and the heating wire 131.

In this case, as described above, when the thickness of the plastic bag (A) is thicker than the distance between the lower surface of the pressure roller 150 and the heating member 130 to move the pressure roller 150 in the upward direction. It is useful to be able to insert a thick plastic bag (A).

In addition, when there is a difference in the height of the first pressure roller 151 and the second pressure roller 152 due to the product tolerance, only one pressure roller 150 having a low height may contact the hot wire 131. One press roller 150 having a low height is raised by the first spring 160 so that both press rollers 150 may contact the heating wire 131 with the plastic bag A interposed therebetween. The plastic bag (A) can be heat sealed more reliably.

Such a sealing device of the present invention may be manufactured and used alone, or may be mounted and used in various types of air suction pumps filed by the applicant.

The sealing device for a plastic bag according to the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the range in which the technical idea of the present invention is permitted.

110: base member, 111: receiving portion, 112: first guide protrusion, 113: locking groove, 114: insertion hole, 115: second spring,
120: cover member, 121: first cover, 122: second cover, 123: second guide projection, 124: guide ball, 125: locking projection,
130: heating member, 131: heating wire, 136: third spring,
140: power supply, 145: terminal,
150: pressing roller, 151: first pressing roller, 152: second pressing roller,
160: first spring, 161: first coupling portion, 162: second coupling portion, 163: elastic portion,
A: plastic bag,

Claims (6)

A base member;
A cover member coupled to the upper portion of the base member in a vertical direction;
A heating member mounted to the base member and having a heating wire exposed to the outside;
A power supply unit supplying power to the heating wire;
A pressure roller rotatably mounted to the cover member and protruding in the direction of the heating member to heat seal the plastic bag disposed between and in contact with the heating member when the cover member is lowered;
The sealing device for a plastic bag, characterized in that made of the first spring is mounted to the cover member for supporting the pressing roller in the vertical direction. The method of claim 1,
The pressure roller is disposed spaced apart by the first pressure roller and the second pressure roller,
The first spring is made of a wire rod, one end is hinged to the rotation center of the first pressure roller, the other end is hinged to the rotation center of the second pressure roller sealing device for plastic bags. The method of claim 2,
The first spring is,
A first coupling part hinged to the rotation center of the first pressing roller;
A second coupling part hinged to the rotation center of the first pressing roller;
Interconnecting the first coupling portion and the second coupling portion, the upper portion is made of an elastic portion is prevented by the cover member,
The elastic portion is bent in the upward direction with respect to the first coupling portion and the second coupling portion, sealing device for a plastic bag, characterized in that the elastic support for the first coupling portion and the second coupling portion in the vertical direction. The method of claim 3, wherein
The width of the elastic portion is a plastic bag sealing device, characterized in that greater than the distance between the first coupling portion and the second coupling portion. The method according to any one of claims 1 to 4,
The heating wire is formed long in the rotational direction of the pressure roller,
The heating wire is longer than the center length of the pressure roller consisting of a plurality,
Sealing device for a plastic bag, characterized in that the heating wire is in contact with at least two of the plurality of the pressure roller when the cover member is lowered. The method according to any one of claims 1 to 4,
The base member is formed in a concave and open in the upward direction, the receiving portion is formed with a first guide protrusion protruding upwards,
The cover member is formed with a second guide protrusion protruding downward and inserted into the receiving portion, and a guide hole into which the first guide protrusion is inserted.
A second spring is mounted on the guide protrusion to elastically support the cover member in an upward direction.
The second guide protrusion has a protrusion formed in the circumferential direction,
The inner circumferential surface of the receiving portion is formed with a locking groove for engaging the locking projection after moving a predetermined distance in the vertical direction, for preventing the separation of the base member and the cover member by the elastic force of the second spring for Sealing device.
KR1020100038855A 2010-04-27 2010-04-27 Sealing device for vinyl bag KR20110119251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100038855A KR20110119251A (en) 2010-04-27 2010-04-27 Sealing device for vinyl bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100038855A KR20110119251A (en) 2010-04-27 2010-04-27 Sealing device for vinyl bag

Publications (1)

Publication Number Publication Date
KR20110119251A true KR20110119251A (en) 2011-11-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100038855A KR20110119251A (en) 2010-04-27 2010-04-27 Sealing device for vinyl bag

Country Status (1)

Country Link
KR (1) KR20110119251A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115279660A (en) * 2020-05-01 2022-11-01 户谷技研工业株式会社 Heat sealing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115279660A (en) * 2020-05-01 2022-11-01 户谷技研工业株式会社 Heat sealing device
CN115279660B (en) * 2020-05-01 2024-02-02 户谷技研工业株式会社 Heat sealing device

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