JPH07329909A - Method and apparatus for packing object - Google Patents

Abstract

PURPOSE:To easily make a bag according to a size of an object and further immediately pack it in a sealed state. CONSTITUTION:A roll holding part 2 for winding a material 1 in a roll and holding is provided, wherein the material is fed out by a roll 5 and after the material is sent by a predetermined length L to a cutter 6 and a heat-fusing press machine 15, the part 2 is stopped. The length L can be increased/decreased by a controlling means G.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article packaging method and packaging apparatus used in a store or the like.

[0002]

2. Description of the Related Art Conventionally, in a store such as a department store or a supermarket, a plastic bag manufactured to have a predetermined size (shape) has been used for packaging (sales) articles.

[0003]

By the way, when there is a fear of liquid leakage in food products, it is necessary to close the opening of the plastic bag containing the food products with a rubber cord or vinyl tape. It was difficult and difficult to seal.

Further, when the articles to be packaged have different sizes, if the size of the bag is constant, it may be wasteful or, conversely, the articles cannot be stored because they are too large.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an original fabric made of a long flat tubular plastic film is wound in advance in a roll shape, and the original fabric in the roll form is packaged. The length corresponding to the size of the feed roll, and the first heat fusion seals the end edge portion of the original fabric at a position approximately equal to the length dimension and from the sealing fusion portion. Is also slightly cut on the upstream side to form an opening-shaped bag, the above-mentioned article H is stored in the bag, and then the opening edge is sealed by the second heat fusion. .

Further, it is a packaging method in which the first heat fusion and the second heat fusion are carried out by the same heat fusion pressing machine.

Further, the article packaging apparatus according to the present invention is provided with a raw material holding portion for winding and holding a raw material made of a long, flat tubular plastic film in a roll shape, and the raw material. A feed roll fed out from the non-holding portion and fed, a roll motor for rotationally driving the feed roll, a length dimension control means for controlling the motor so as to determine the length dimension to be fed, and the feed roll. And a cutter arranged in the vicinity of the downstream side of the cutter, and a position close to the downstream side of the cutter and fed out from the tip edge portion of the original fabric that is sealed at a position substantially equal to the length dimension to form one opening shape. And a heat fusing and pressing machine that forms a bag and seals the opening edge after storing the article.

It is preferable that the cutter be operated by the same actuator as the reciprocating pressing portion of the heat fusion pressing machine.
Further, the length dimension control means is a foot switch operated by a person with his / her foot. Alternatively, the length dimension control means is composed of an electronic circuit and an encoder for presetting the rotation angle of the motor. (Here, an encoder is attached to the feed roll and the length is controlled by taking out a pulse, or a pulse command is given to a pulse motor or the like to control the feed length.)

It is preferable that the original fabric holding portion, the feed roll, the motor, the length dimension control means, the cutter, and the heat fusion pressing machine are provided on one portable base frame.

[0010]

According to the first aspect of the invention, it is not necessary to prepare various bags in advance in a store that sells food, daily necessities, miscellaneous goods, and other various articles. That is, when necessary, the roll-shaped raw material is fed out, and by the first heat fusion and cutting, the one-sided plastic bag can be easily manufactured,
By storing the article and sealing it by the second heat fusion,
The packaging can be completed.

In this way, the bag can be produced immediately and used immediately (for packaging) in the required amount when needed. At this time, since the size of the bag depends on the article to be packaged, there is no waste, and conversely, a long wooden board, wood, rod, etc. can be entirely packaged easily.

(According to the second aspect) Only one heat fusion pressing machine is required, and the apparatus can be made compact.

By the length dimension control means (according to claim 3), it is possible to easily and reliably package an article having a sufficiently long size according to a dimension (such as a long article) without waste. Since the bags can be easily manufactured and the articles can be packaged, it is not necessary to stock various bags having various sizes in advance.

By actuating the actuator (according to claim 4), the cutting and the heat fusion can be performed (almost) simultaneously. The structure can be simplified.

(According to the fifth aspect) An operator such as a salesperson can easily determine the size (length) of the bag by using the foot switch in accordance with the article to be packaged.

(According to claim 6) The size (length) of the bag can be easily set by the length control means composed of an electronic circuit so that the bag has a size suitable for the article to be packed. You can

(According to claim 7) For example, it is convenient to be able to easily move to a place in a large store where packaging is required.

[0018]

The present invention will be described in detail below with reference to the illustrated embodiments.

In FIG. 1, a simplified structure of an article packaging apparatus is shown, and 1 is an original fabric made of a plastic film,
As shown in FIG. 2, it is a long flat tubular shape and is made of a thermoplastic such as polyethylene or polypropylene. It is wound in advance in a roll shape and is rotatably held by the original fabric holding portion 2.

That is, the original fabric holding portion 2 has a support shaft 3 which is inserted into the central hole of the roll-shaped original fabric 1 to rotatably hold the roll-shaped original fabric 1, and is fed out. Are guided to the feed roll 5 through the idle guide rolls 4 ...

The feed roll 5 is composed of a pair of rolls which rotate in the direction of the arrow while holding the fed original 1 from both sides, and at least one roll is rotationally driven by a roll motor M.

A cutter 6 is arranged near the downstream side of the feed roll 5, and a heating seal portion 7 is arranged near the downstream side of the cutter 6.

The heating seal portion 7 has a receiving plate 9 (in FIG. 1) having a heating portion 8 such as a nichrome wire, and a reciprocating pressing operation for reciprocating the receiving plate 9 so as to approach and separate freely (at right angles). Consisting of 10 parts.

Moreover, in FIG. 1, the cutter 6 and the reciprocating pressing portion 10 are provided with the same actuator 12 via the connecting member 11.
And reciprocates. That is, although the case where the actuator 12 is a fluid pressure cylinder is illustrated in FIG. 1, this fluid pressure cylinder is alternately supplied with pressure fluid via the solenoid switching valve 13, and as shown by arrows A and B, It reciprocates.

The heat fusion pressing machine 15 includes an actuator 12,
Switching valve 13, fluid source (pump and motor, etc.), connecting member 11,
It is composed of a pressing unit 10 and a heating unit 8.

The heat fusing and pressing machine 15 includes a heat seal portion 7
By heat fusion of the raw material holding portion 2 side-upstream side-by a predetermined dimension from the tip edge portion 1a of the raw material 1 which is arranged on the downstream side of the cutter 6 and is fed from the feed roll 5. ,
On the other hand, an open bag F is formed (see FIG. 6). Prior to this heat fusion, the cutter 6 cuts C (see FIG. 6) slightly upstream of the heat fusion portion.

A timer is used to control the time during which the reciprocating pressing unit 10 presses the original fabric 1 toward the receiving plate 9 to heat it.
16 is provided, and the solenoid of the switching valve 13 can be ON-OFF controlled by this timer 16.

The timer 16 can be adjusted in time by the setting means 17, and sets the length of the pressing time for sufficient fusion according to the material, thickness, etc. of the material 1.

Further, in FIG. 1, a length dimension control means G is provided for controlling the roll motor M to determine the length dimension L for sending out the original fabric so that it can be increased or decreased. That is, as shown in FIGS. 1 and 6, the length dimension L is between the cut C and the next cut C.
And can be determined according to the size (length dimension) of the article to be packaged.

As the length dimension control means G, the simplest one is that the length set in the digital counter is subtracted by the pulse signal from the encoder attached to the feed roll 5 and the feed is stopped by zero reset. ,Constitute. Alternatively, as the length dimension control means G, a pulse motor may be used as the motor M to be integrally configured. Further, as the length dimension control means G, another simple one is a foot switch operated by a person's foot, and the length dimension L to be sent can be visually judged to turn the foot switch on and off. Good.

From the viewpoint of handling, it is desirable that all of the components shown in FIG. 1 are provided in one portable base frame to make it portable. That is, it is desirable that all of the original fabric holding section 2, the feed roll 5, the motor M, the length dimension control means G, the cutter 6, and the heat fusion pressing machine 15 be portable.

In FIG. 1, the pattern (text,
It is also preferable that a detection sensor 18 (including a figure / symbol) is additionally provided so that the cutting, the heat-sealing position, and the relative position of the pattern are controlled to be constant in advance. In this case, the output signal from the sensor 18 is input to the dimension control means G (the circuit is not shown).

A magnet may be used as the actuator 12 (not shown).

Next, using the packaging apparatus illustrated in FIG. 1,
Explaining the method of wrapping the articles, first, as shown in FIG. 2, a roll 1 is preliminarily rolled with a raw material 1 made of a long plastic film in the shape of a flat cylinder, in which left and right side edges are continuously folded. It is wound into a shape and set on the original fabric holding portion 2.

The length L corresponding to the size of the article H to be packaged (see FIGS. 8 to 10) (the feed roll 5 is set to the motor M).
It is rotatably driven by, and is fed out, and in the state of FIG.
To stop the feeding.

The feed dimension is controlled by the dimension control means G. When a foot switch is used, the operator (operator) judges by looking at the article H and operates the foot switch for an appropriate time. It is sufficient to step on the foot and rotate the motor M. Further, in the case of the dimension control means G using an electronic circuit and an encoder, the feed dimension can be increased or decreased by turning a knob or the like, or the article name and its length dimension can be preset by the setting input means (keyboard etc.). After inputting, and the worker (operator) presses the button of the article name, the feed of the length dimension L corresponding thereto is automatically given. Alternatively, a bar code is attached to each article (product) in advance, and the bar code is read by a reader, or correspondingly, only the length dimension L previously input to the dimension control means G is fed. May be performed (by program control).

Next, as shown in FIGS. 3 to 4, when the cutter 6 and the pressing portion 10 are simultaneously lowered (by the operation of the actuator 12 in FIG. 1) as shown by an arrow A, the cutter 6 moves downward. The raw material is cut into the length L in cooperation with the plate member 19, and the pressing portion 10 cooperates with the heating portion 8 to heat while applying pressure to perform the first heat fusion.

It is assumed that the timer 16 shown in FIG. 1 is set in advance to a time sufficient to perform the first heat fusion, and then, as shown by an arrow B in FIG.
When the pressing part 10 is raised, a bag F having a one-side opening is obtained as shown in FIG.

That is, the bag F obtained by such a bag-making process has a position which is substantially equal to the length dimension L from the leading edge 1a of the raw fabric 1--a position having a slightly smaller size. Sealing is performed by heat fusion to form a widthwise sealed fusion-bonded portion 21. The cutting C is performed slightly upstream of the hermetically fused portion 21.

Next, as shown in FIG. 7, after inserting the article H into the bag F having the one-side opening as shown by the arrow and storing it,
As shown in FIG. 8 (inverting the upstream end and the downstream end of the bag F), the opening edge 22 of the bag F is installed between the pressing part 10 and the heating part 8, and again as shown by the arrow A. The pressing unit 10 is lowered, and the second heat fusion is performed as shown in FIG. 9 (the sealing step is performed) to package the article H in a hermetically sealed state. After that, as shown in FIG. 10, the pressing portion 10 is raised in the direction of the arrow B, and the bag F ′ in which the packaging of the article H is completed is taken out. FIG. 11 shows a state in which the article H is thus sealed and completely packaged.

As described above, if the first heat fusion and the second heat fusion are carried out by the same heat fusion pressing machine 15, the equipment cost can be reduced and the apparatus can be installed in a small space. It's done.

The basic operation is summarized as follows (or including other operating methods) as follows.

The roll-shaped original fabric 1 is mounted. The feed length is set by a digital switch (as the dimension control means G). Set the sealing time with timer 16. Start with touch switch. The feed roll 5 feeds out the set length dimension and stops, and the cutter 6 and the pressing portion 10 descend and heat-fuse for the first time, and then rise (open). The article H is stored in the bag F. Opening edge of bag F
22 is placed on the heating unit 8 and the foot switch is operated by the foot to lower the pressing unit 10 for the second heat fusion.
(Although not shown, the cutter 6 and the pressing portion 10 may be different actuators so that only the pressing portion 10 descends at this time, or the connecting member may be formed of two parts, such as a solenoid pin. It may be configured to be freely connectable (integrated) and separated from each other.) Opened and completed.

[0044]

The present invention has the following significant effects with the above-mentioned configuration.

(According to claim 1) Since the bag is made when it is necessary to wrap the article H, it does not need a storage place for the bag (compared to the case where the ready-made bag is stocked). In addition, a bag having an optimum size corresponding to the size (length dimension) of the article H can be easily manufactured. After that, it can be immediately packaged in a sealed form, which is convenient for selling products in various stores. further,
Since the size of the bag can be reduced according to the article H to be packaged, there is no waste, and conversely, a long piece of wood, metal or plastic plate / rod, etc. can be easily packaged in an entirely enclosed shape.

(According to claim 2) Only one device is required, the number of installation places is small, and it is easy to implement in various stores.

The apparatus is simple (according to claim 3), and the bag making step and the sealing (packaging) step can be performed together with this apparatus. Since the original fabric 1 is held in the form of a roll, it does not take up much space and the size of the article H (length dimension)
Can be easily dealt with.

Actuator 12 (according to claim 4)
Since only one is required, the structure can be simplified, and the first heat fusion and cutting can be performed quickly.

(According to claim 5) Worker (operator)
Can visually determine the size (length dimension) of the article H, and can easily make the bag with the size of the bag F corresponding thereto.

The size (length L) of the bag F can be set semi-automatically or automatically (according to claim 6).

(According to claim 7) For example, in a large store, it is possible to easily move from one sales floor to another sales floor, which is convenient.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the original fabric 1. FIG.

FIG. 3 is an operation explanatory diagram.

FIG. 4 is an operation explanatory diagram.

FIG. 5 is an operation explanatory view.

FIG. 6 is an explanatory diagram showing a state immediately after the completion of the bag manufacturing process.

FIG. 7 is a perspective view showing immediately after an article H is inserted.

FIG. 8 is an operation explanatory diagram.

FIG. 9 is an operation explanatory view.

FIG. 10 is an operation explanatory diagram.

FIG. 11 is a perspective view showing a completed packaging state.

[Explanation of symbols]

 1 Raw Fabric 1a Tip Edge 2 Raw Fabric Holding Part 5 Feed Roll 6 Cutter 10 Reciprocating Pressing Part 12 Actuator 15 Heat Fusion Pressing Machine 22 Open End Edge M Roll Motor H Packaged Goods G Dimension Control Means F Bag L Length Size

Claims (7)

[Claims] 1. A raw material 1 made of a long flat tubular plastic film is wound in advance in a roll shape, and the roll-shaped raw material 1 has a length corresponding to the size of the article H to be packaged. The length L is fed from the leading edge 1a of the raw fabric 1 by feeding the length L by the feed roll 5 and performing the first heat fusion.
Is sealed at a position substantially equal to, and cut at a position slightly upstream of the sealing fusion-bonding portion 21 to form a bag F having an opening.
After accommodating the article H in the bag F, the opening edge 22 is moved to the second
A method for wrapping an article, which comprises sealing by heat fusion. 2. The first heat fusion and the second heat fusion,
The method for wrapping articles according to claim 1, wherein the heating and fusion pressing machine 15 is the same. 3. A raw fabric holding part 2 for winding and holding a raw fabric 1 made of a long flat cylindrical plastic film in a roll shape, and feeding the raw fabric 1 from the raw fabric holding part 2. Feeding roll 5, a roll motor M that rotationally drives the feeding roll 5, and a length dimension control unit G that controls the motor M to determine the feeding length dimension L so as to be adjustable.
The cutter 6 arranged near the downstream side of the feed roll 5 and the length dimension L from the tip edge portion 1a of the raw fabric 1 which is arranged near the downstream side of the cutter 6 and fed out.
And a heat fusing and pressing machine 15 for sealing the opening F after the storage of the article H and sealing the position substantially equal to the one side to form an open bag F. apparatus. 4. The article packaging apparatus according to claim 3, wherein the cutter 6 is operated by the same actuator 12 as the reciprocating pressing portion 10 of the heat fusion pressing machine 15. 5. The article packaging apparatus according to claim 3, wherein the length dimension control means G is a foot switch which is operated by a person's foot. 6. The article packaging apparatus according to claim 3, wherein the length dimension control means G includes an electronic circuit for presetting a rotation angle of the motor M and an encoder. 7. The original fabric holding section 2, the feed roll 5, the motor M, the length dimension control means G, the cutter 6, and the heat fusion pressing machine 15 are provided on one portable base frame. The article packaging apparatus according to claim 3.