JP2021001026A5 - - Google Patents

Description

Closing device for the package and the simple closure of the package

The present invention relates to a packaging method, a packaging device, a packaging body, and a closing device for a simple closing portion of the packaging body.
Specifically, the present invention is a so-called "cooking pan" such as a "hot dog" in which a groove having a predetermined depth is formed on the upper surface of a roll pan and "yakisoba" or "sausage with lettuce" is sandwiched in the groove. Alternatively, it is suitable for packaging agricultural products, such as "shimeji", which are packaged so that the upper part does not come into contact with the film as much as possible, or objects that do not want to be pressed inward by the film. The present invention relates to a packaging material (also simply referred to as “packaging material” in this specification and the scope of patent claims, etc.), its packaging method, and packaging equipment. In the present specification and claims, the "film sheet" means a thin film sheet for packaging an object to be packaged.

Taking the case of the above-mentioned "yakisoba bread" as an example, these "yakisoba bread" and the like are currently packaged in a state where the inner surface of the film sheet for packaging is in contact with the sandwiched "yakisoba" or sausage. ing.
Therefore, the film sheet comes into contact with the sauce of yakisoba, ketchup of sausage, etc., and the inner surface of the film sheet is displayed in a soiled state.
Such a situation spoils the appearance (aesthetics) of the product and may have a great influence on the sales of some products.
For this reason, the "yakisoba bread" and the like are displayed in the display case without being wrapped in a film, and are sold in a state where the clerk takes them out of the case at the time of sale and wraps only the bottom surface and the side surface with wrapping paper.
However, it cannot be adopted in so-called convenience store type or supermarket type stores that do not adopt such a sales method.

Therefore, cooking breads such as "yakisoba bread" provided at convenience stores were placed on a slightly large tray or mount and wrapped with a film sheet around them.
Alternatively, it may be sold in a box made of a transparent, rigid and rigid material.
As such prior art, there are Patent Document 1 and Patent Document 2.

With the packaging as described in Patent Document 1 and Patent Document 2, the packaging cost is high, and the purchaser needs to dispose of trays, boxes, and the like.
On the other hand, if the product is wrapped in a thin film sheet with low rigidity, if the object to be packaged is "Yakisoba bread", the sauce etc. will adhere to the inner surface of the film sheet and spoil the aesthetic appearance of the product. When the head of "Shimeji", which is a part, is pressed, the pressed part is damaged, and the commercial value is lowered.

Therefore, the inventor of the present application is suitable for packaging an object to be packaged such as "Yakisoba bread" or "Shimeji" in which the upper part does not come into contact with the film as much as possible or is not pressed inward by the film. , A packaging body, a packaging method thereof, a packaging device, and the like shown in Patent Document 3 have been proposed.

JP-A-2002-37331 Japanese Unexamined Patent Publication No. 10-120022 Japanese Unexamined Patent Publication No. 2018-16390

According to the packaging method of Patent Document 3 and the packaging device thereof, the epoch-making packaging body shown in FIG. 1 can be provided.
However, the inventor of the present application has been diligently researching whether or not the finish of the package can be further improved without being satisfied with the invention of Patent Document 3.
The present invention has been made in view of such a situation, and an object of the present invention is to provide a packaging method and a packaging device that realize packaging with a better finish.

The present invention includes a transport device provided with a transport means for transporting an object to be packaged from upstream to downstream, and a film sheet supply device that supplies a strip-shaped film sheet side by side with the transport surface of the transport device. When the strip-shaped film sheet is supplied from the film sheet supply device to the transport surface side, the film sheet is U-shaped with the transport direction of the object to be packaged and the film sheet in the front-rear direction and the left and right ends of the film sheet facing upward. After the objects to be packaged are sequentially placed on the former that is bent in a shape and the film sheet that is bent in a U shape by the former, the objects to be packaged are separated from each other and then the left and right inner surfaces of the film sheet are overlapped. Between the center seal device that seals above the object to be packaged and forms a center seal that extends back and forth along the transport direction, and the separated objects of the film sheet on which the center seal is formed. A tail seal device for forming a tail seal extending vertically to the rear of the object to be packaged, which precedes the film, and a film sheet to which the center seal is formed, which are separated from each other. It has a top sealing device that forms a top seal that extends vertically to the front of the package, and the tail sealing device overlaps the left and right inner surfaces of the film sheet behind the preceding object to be sealed. The tail seal connected to the center seal is sequentially formed on the preceding package of the object to be packaged, and the top seal device superimposes the left and right inner surfaces of the film sheet in front of the subsequent object to be packaged. By sequentially forming the top seal connected to the center seal on the subsequent package of the object to be packaged, the left and right side surfaces of the top seal and the tail seal are flush with the left and right side surfaces of the center seal. The following configuration is provided for a packaging device that sequentially forms an upright package of the center seal in which the top seal and the tail seal are connected to the center seal above the object to be packaged. Provide what to take.
That is, this packaging device includes a wrinkle removing device and a wrinkle removing guide, and the wrinkle removing device forms the top seal and the tail seal of the film sheet before forming the top seal and the tail seal. The portion is stretched to prevent wrinkles from remaining on the top seal and the tail seal after formation, and the wrinkle-removing guide guides the film from the left and right sides of the film sheet prior to the operation of the wrinkle-removing device. The sheet is held down to narrow the left and right widths of the bending film sheet between the preceding object to be packaged and the subsequent object to be packaged.
Further, in the present invention, after the center seal is formed, a gripping device for sandwiching the formed center seal from the left and right is provided, the gripping device includes at least a pair of left and right gripping arms, and the paired gripping arms can be opened and closed. The gripping device paired by opening and closing sandwiches the center seal from the left and right, and includes at least a pair of left and right wrinkle-removing guides that press the film sheet from the left and right, and each of the wrinkle-removing guides grips the film sheet. It has been possible to provide a packaging device provided on each of the arms, extending downward from both gripping arms and operating integrally with the opening and closing of the gripping arms to press a portion of the film sheet below the center seal.
Further, in the present invention, at least a pair of left and right wrinkle removing devices are provided, which sandwich the top seal and the tail seal forming portion of the film sheet from the left and right after the center seal is formed, and each of the wrinkle removing devices is provided. Is to extend the portion forming the top seal and the tail seal by moving the portion of the wrinkle removing device in contact with the portion forming the top seal and the tail seal downward from the top seal side. Each of the paired wrinkle-removing guides could provide a packaging device having a curved portion that curves to gradually increase the distance between each other toward the lower end.
Further, in the present invention, each of the wrinkle removing devices is provided with a lever extending up and down, and the levers of the wrinkle removing device paired with each other can be opened and closed centering on the upper end side of the lever. A portion of the film sheet forming the top seal and the tail seal can be sandwiched between the left and right sides, and the lever is an annular belt passed along the lever and a drive unit for circulating the belt. A part of the circulation path of the belt is the portion that comes into contact with the portion of the wrinkle removing device that forms the top seal and the tail seal, and the position of the lever is determined by the circulation of the belt. The portion of the wrinkle removing device that comes into contact with the top seal and the portion forming the tail seal is continuously moved downward from the center seal side, and the pair of gripping arms is the same. The center seal can be opened and closed from the left and right by opening and closing the upper end side of the gripping arm, and the wrinkle removing guide extends downward from the lower end side of each gripping arm to open and close the gripping arm. Provided a packaging device for pressing the portion of the film sheet below the center seal.
Furthermore, the present invention is a packaging method in which a packaged object to be packaged is packaged using a film sheet that is continuously fed out, and the packaged object to be continuously supplied is extended in a strip shape. The film sheet is placed on the central portion in the left-right width direction at intervals in the front-rear direction and transported downstream, and the left and right both end portions of the film sheet are bent upward during the transportation to form the packaged object. The inner surfaces of the left and right end portions of the film sheet are overlapped and sealed above, and a center seal extending back and forth along the transport direction is formed to form a tubular shape of the film sheet, and the center seal is formed and then transported. Downstream in the direction, the left and right inner surfaces of the film sheet are overlapped and sealed behind the object to be packaged to sequentially form the tail seal extending vertically to the rear of the object to be packaged, and subsequently to be packaged. By overlapping and sealing the left and right inner surfaces of the film sheet in front of the object and sequentially forming the top seal extending vertically to the front of the packaged object, the left and right side surfaces of the top seal and the tail seal are respectively formed. A package in which an upright package of the center seal is sequentially formed in which the top seal and the tail seal are connected to the center seal above the object to be packaged so as to be flush with the left and right side surfaces of the center seal. In the method, the one having the following structure is provided.
That is, this packaging method uses a wrinkle removing device and a wrinkle removing guide to form the top seal and the tail seal of the film sheet before forming the top seal and the tail seal. The film is stretched to prevent wrinkles from remaining on the top seal and the tail seal after formation. Prior to the operation of the wrinkle removing device, the film is used from the left and right sides of the film sheet with the wrinkle removing guide. It is characterized in that the sheet is pressed and the left and right widths of the bending film sheet are narrowed between the preceding object to be packaged and the subsequent object to be packaged.
Further, in the present invention, a transport device provided with a transport means for transporting the object to be packaged from upstream to downstream, and a film sheet supply device that supplies a strip-shaped film sheet side by side with the transport surface of the transport device. When the strip-shaped film sheet is supplied from the film sheet supply device to the transport surface side, the film sheet is U. The film sheet is provided with a former that is bent in a shape, and the objects to be packaged are sequentially placed on the film sheet that is bent in a U shape by the former so as to be separated from each other. A tail seal device that forms a tail seal that extends vertically to the rear of the packaged object that precedes the separated objects to be packaged, and a tail seal device that forms a tail seal that extends vertically to the rear of the object to be packaged. It has a top sealing device that forms a top seal that extends vertically to the front of the object to be packaged, and the tail sealing device overlaps and seals the left and right inner surfaces of the film sheet behind the preceding object to be packaged. The tail seal is sequentially formed on the preceding package of the object to be packaged, and the top sealing device superimposes and seals the left and right inner surfaces of the film sheet in front of the subsequent object to be packaged. The top seal is sequentially formed on the package of the object to be packaged, and is provided with a wrinkle removing device and a wrinkle removing guide. The wrinkle removing device is provided with the film sheet before the formation of the top seal and the tail seal. The portion of the film that forms the top seal and the tail seal is stretched to prevent wrinkles from remaining on the top seal and the tail seal after formation, and the wrinkle removing guide is an operation of the wrinkle removing device. Prior to this, the film sheet is pressed from the left and right sides of the film sheet, and the width of the left and right sides of the bending film sheet is narrowed between the preceding object to be packaged and the subsequent object to be packaged. Provide the device.
Further, in the present invention, there is provided a stacking device for stacking the left and right inner surfaces of the film sheet without sealing each other, and further, a gripping device for sandwiching the upper end side of the film sheet on which the left and right inner surfaces are superposed by the stacking device from the left and right. The gripping device includes at least a pair of left and right gripping arms, and the paired gripping arms can be opened and closed, and the gripping device paired by the opening and closing sandwiches the upper end side of the film sheet from the left and right. The film sheet is provided with at least a pair of left and right wrinkle-removing guides that press the film sheet from the left and right, and each of the wrinkle-removing guides is provided on each of the gripping arms and extends downward from both gripping arms. It has been possible to provide a packaging device that operates integrally with opening and closing to hold a portion of the film sheet below the position where the gripping device sandwiches the film sheet.
Further, in the present invention, at least a pair of left and right inner surfaces are overlapped on the upper end side of the film sheet, and then the top seal and the tail seal forming portion of the film sheet are sandwiched from the left and right. A wrinkle removing device is provided, and each of the wrinkle removing devices moves the portion of the wrinkle removing device in contact with the top seal and the portion forming the tail seal downward from the top seal side. Each of the wrinkle-removing guides, which extends the portion forming the top seal and the tail seal, has provided a packaging device having a curved portion that curves toward the lower end so as to gradually increase the distance between the top seal and the tail seal.
Furthermore, in the present invention, each of the wrinkle removing devices is provided with a lever extending up and down, and the levers of the wrinkle removing device paired with each other can be opened and closed centering on the upper end side of the lever. A portion of the film sheet forming the top seal and the tail seal can be sandwiched between the left and right sides, and the lever is an annular belt passed along the lever and a drive unit for circulating the belt. A part of the circulation path of the belt is the portion that comes into contact with the portion of the wrinkle removing device that forms the top seal and the tail seal, and the position of the lever is determined by the circulation of the belt. The portion that comes into contact with the portion of the wrinkle removing device that forms the top seal and the tail seal is continuously moved downward from the upper end side of the film sheet in which the left and right inner surfaces are overlapped without change. The pair of gripping arms can be opened and closed centering on the upper end side of the gripping arms, and the opening and closing can sandwich the upper end side of the film sheet on which the left and right inner surfaces are overlapped from the left and right. The taking guide can provide a packaging device that extends downward from the lower end side of each of the gripping arms and presses the portion of the film sheet below the portion sandwiched by the gripping arms by opening and closing the gripping arms.
Further, the present invention is a packaging method in which an object to be packaged is packaged by using a film sheet that is continuously fed out, and the object to be continuously supplied is extended in a strip shape. The film is placed on the center portion of the film sheet in the left-right width direction at an interval in the front-rear direction and transported downstream, and the left and right both end portions of the film sheet are bent upward during the transportation. The sheet is U-shaped or tubular, and the inner surfaces of the left and right end portions of the film sheet face each other above the object to be packaged, and the object to be packaged is downstream in the transport direction after facing each other. The left and right inner surfaces of the film sheet are overlapped and sealed behind the film sheet to sequentially form the tail seal extending vertically to the rear of the object to be packaged, and the left and right sides of the film sheet are sequentially formed in front of the subsequent object to be packaged. The top seal is sequentially formed by superimposing and sealing the inner surfaces of the top seal and extending vertically to the front of the object to be packaged. Using a wrinkle removing device and a wrinkling guide, the top seal and the tail seal are formed. Previously, the wrinkle removing device stretches the portion of the film sheet that forms the top seal and the tail seal to prevent wrinkles from remaining on the top seal and the tail seal after the formation. Prior to the operation of the wrinkle removing device, the film sheet is pressed from the left and right sides of the film sheet by the wrinkle removing guide, and the left and right sides of the bending film sheet between the preceding object to be packaged and the subsequent object to be packaged. Provided is a packaging method characterized in that the width of the film is narrowed.
Further, in the present invention, the package is suitable for packaging an object to be packaged, which dislikes contact between the inner surface and the upper part of the film sheet or dislikes the upper part being pressed from the outside by the film sheet. However, in the state of being placed on the film sheet, the bottom and both sides are covered with the film sheet from below, and the left and right parts of the film sheet with respect to the packaged object have the packaged object inside. The left and right ends of the film sheet are arranged above the packaged object, the left and right ends of the film sheet are not sealed, and the film sheet has an opening that opens at the upper end and the opening. A top seal that seals the left and right inner surfaces of the film sheet in a superposed state in front of the packaged object, and a tail that seals the left and right inner surfaces of the film sheet in a superposed state behind the packaged object. The top seal and the tail seal extend vertically in front of and behind the packaged object, respectively, and the opening extends between the packaged object and the packaged object through a gap space. The package is opened above the package to allow the packaged object to be taken in and out, and the left and right sides of the film sheet are located below the opening and above the packaged object. , Provide a packaging body with a hand-carrying hole through the film sheet.
Further, in the present invention, the bottom of the film sheet provides a package in which a gusset is formed between the top seal and the object to be packaged and between the tail seal and the object to be packaged. did it.
Furthermore, in the present invention, the package has a simple closing portion that closes between the left and right side portions of the film sheet toward the opening side of the packaged object, and the simple closing portion is on the opening side. The simple closing portion is closed to prevent the contained object from exiting the package from the opening, and the simple closing portion is opened to open the contained object. We were able to provide a reusable package that can be taken out of the package from the section.
Further, in the present invention, the simple closing portion is provided on the inner side surface of at least one of the left and right side portions of the film sheet, and extends in the front-rear direction orthogonal to the left-right and top-bottom of the package, or in the front-rear direction. It has been possible to provide a package having a plurality of intermittently arranged adhesive seals.
Further, in the present invention, the simple closing portion can provide a package body provided below the opening and above the object to be packaged.
Further, in the present invention, the present invention is used by being attached to the packaging device according to claim 6, and includes a closing operation portion for closing the simple closing portion of the package containing the object to be packaged. The closing device for a simple closing portion of a package according to any one of 13 to 15.
Furthermore, in the present invention, the closing operation portion includes at least a pair of pressing portions arranged on the left and right sides of the package, and the pressing portion presses the left and right side portions of the film sheet from the outside of the left and right side portions. It has been possible to provide a closing device for the simple closing portion of the package, which closes the simple closing portion by bringing the left and right side portions into close contact with each other at the simple closing portion.

According to the present invention, there is provided a package, a packaging method thereof, a packaging device, and the like, which are suitable for packaging an object to be packaged, which dislikes the upper portion coming into contact with the film as much as possible or does not want to be pressed inward by the film. be able to. For example, we have been able to provide a packaging method and an apparatus capable of producing a packaging body suitable for packaging "yakisoba bread" or "shimeji mushroom".
In particular, in the present invention, it is possible to effectively suppress wrinkles on the top wheel and the tail seal during packaging, and the finish of the package is improved.
Specifically, the wrinkle removing device is used to smooth out wrinkles in advance for the portion of the film sheet that forms the top ring and the tail seal before the top ring and the tail seal are formed. Prior to the operation, the wrinkle removing guide was used to press the portion of the film sheet forming the top toll and the tail seal to narrow the left and right widths, thereby making the wrinkle removing by the wrinkle removing device more effective.
As described above, by providing the wrinkle removal guide, the accuracy of wrinkle removal is improved, packaging can be performed at high speed, and the packaging capacity is significantly improved.
INDUSTRIAL APPLICABILITY The present invention can obtain the above-mentioned wrinkle removal efficiently for a package in which the upper end of the package is sealed with a center seal , while also for a package in which the upper end of the package is not sealed and has an opening. It was .
In particular, in the present invention, the formation of the opening makes it possible to provide a package in which the object to be packaged can be easily taken in and out from the opening, and the package having the opening is provided with a hand-carrying hole. did it. The package having the above-mentioned opening and the hole for carrying is convenient for carrying fruits and the like.
More specifically, the present invention has made it possible to manufacture the above-mentioned packaging body which is not provided with a center seal, has an opening, and further has a hole for carrying. The production of the package with the opening and the hole for carrying is realized by effectively suppressing the occurrence of wrinkles in advance by using a wrinkle removing device and a wrinkle removing guide for the part forming the top seal and the tail seal. Is.
That is, the present invention has been able to provide a package made of a film sheet having an opening for taking in and out an object to be packaged and a hole for carrying, which has not been imagined in the past, particularly a self-standing package.
Further, the present invention has been able to provide a reusable package and a simple closing portion forming device thereof by providing the simple closing portion.

It is a figure which shows the appearance shape of the package which concerns on one Embodiment of this invention, (a) is the perspective view which looked at the package from slightly diagonally above, (b) is from the direction of bb arrow of (a). It is a view. It is a figure which shows the structure of the main part of the packaging apparatus for wrapping in the packaging body shown in FIG. It is a partially enlarged view of (a) which shows the structure of the downstream part of the top seal device, the tail seal device, and the transport device of a packaging device. (A) is an arrow view of IIIa-IIIa of FIG. 2 (a), and (b) is an arrow view of IIIb-IIIb of FIG. 2 (a). (A) is a view taken along the line IVa-IVa of FIG. 2A showing the gripping device, the wrinkle removing device, the tail sealing device and the top sealing device of the present packaging device, and (b) is the gripping device, the wrinkle removing device and the tail. FIG. 5 is a view taken along the line IVb-IVb of FIG. 2B showing a state in which the sealing device and the top sealing device are in operation. It is a figure which shows the seal surface of the arrangement structure of the seal means and the heater of the cut portion shown in FIG. It is a block diagram which shows the whole structure of the packaging apparatus which concerns on this embodiment shown in FIGS. 1 to 5. (A) is an enlarged view of FIG. 2 (b), and (b) is an arrow view of AA of (a). It is a BB arrow view of FIG. 7A showing a state at the time of operation of the wrinkle removing device. It is an enlarged view of the main part of FIG. 7B which shows the state at the time of operation of the wrinkle removal guide. FIG. 7 (a) is a view taken along the arrow A of FIG. 7 (a) showing a state in which the wrinkle removing device and the wrinkle removing guide of FIG. 7 (b) are closed. (A) is a perspective view showing a strip-shaped film sheet (web) set and used in the packaging device of the present invention, and (b) is FIG. 2 (b) in which packaging is performed using the film sheet of (a). It is an enlarged view of a packaging device. (A) is a perspective view showing mainly the right side of the package of another embodiment according to the present invention, and (b) is a view of the package shown in (a) from a different direction from (a). It is a perspective view which mainly shows the front. It is a perspective view which shows the state which held in the hand about the package shown in FIG. 12 (a). (A) is a perspective view mainly showing the right side surface of the modified example of the package shown in FIG. 12 (a), and (b) is a perspective view mainly showing the front surface of the package of (a). (A) is a perspective view showing a strip-shaped film sheet (web) of still another embodiment set and used in the packaging device of the present invention, and (b) is packaging using the film sheet of (a). It is an enlarged view which provided the closing device of the simple closing part to the packaging device of FIG. 2 (b) (particularly FIG. 21 (a) (b)). It is a perspective view which mainly shows the left side side which shows the packaging body of still another Embodiment which concerns on this invention. It is a schematic front view which shows the closed state by the closing operation part of the simple closing part of the package of FIG. It is a left side view of the package body in a state where the simple closing part of the package body of FIG. 16 is closed by the closing operation part of FIG. (A) is a front view of the package of FIG. 18, and (b) is a front view showing a state in which the simple closed portion of the package of (a) is opened. An example of modification of the packaged object of the package shown in FIGS. 18 and 19 is shown. Regarding the modified example, (a) is a plan view, (b) is a front view, and (c) is a left side view. d) is a rear view, and (e) is a bottom view. (A) is a substantially left side view showing a modified example of the packaging device of FIG. 2 (b), and (b) is a substantially left side view showing an operating state of a transport unit in the packaging device of (a). (A) is a view taken along the line CC of FIG. 21 (a), (b) is a view taken along the line DD of (a), and (c) is the cushioning material of (b) and the object to be packaged. It is explanatory drawing which shows the contact state. (A) is a schematic front view of the closing device of FIG. 15 (b) (a view seen from the downstream side of the transportation of the package), and (b) is a schematic front view showing the operating state of the closing device of (a). (C) is a substantially left side view of the closing device of (b), and (d) is a substantially front view of the closing device after the closing is completed.

Hereinafter, the packaging body according to one embodiment of the present invention, the packaging apparatus for packaging the packaging, and the packaging method will be specifically described with reference to the drawings.

In FIG. 1, A is a package, and the package A has a package 1 and a film sheet 3 that surrounds the package 1 from the periphery (outside). The object to be packaged 1 is an object that dislikes contact with the inner surface 3i of the film sheet 3 or is disliked to be pressed from the outside by the film sheet 3, and in this embodiment, "yakisoba bread" is an example. It is mentioned in.
The "yakisoba bread" is a type of bread in which a sandwiching groove is formed on the upper surface of the roll bread and the "yakisoba" is sandwiched in the sandwiching groove, and is a kind of so-called "cooking bread".
Further, in this embodiment, a transparent film sheet is used as the film sheet 3. However, the film sheet 3 may be a translucent film sheet or an opaque film sheet.

In this embodiment, as shown in FIG. 3A, the package A has the object to be packaged 1 placed in the center of the film sheet 3 in the width direction in FIG. 1A. , (B) and FIG. 2 (b), the bottom portion 1b and both side portions 1s of the object to be packaged 1 are covered with the film sheet 3 from below.
Further, as shown in FIGS. 1A and 1B, the package A has both end portions 3e (side end portions 3e) of the film sheet 3 in the width direction at the upper portion of the object to be packaged 1. The center seal Ss is formed by being sealed in a state of being lifted upward, and a gap space Su is formed between the upper end of the packaged object 1 and the film sheet 3 after the center seal. It is packaged in a state.
Then, as shown in FIGS. 1 (a) and 1 (b), the package A is sealed at the front portion of the package 1 to form a top seal To, and the package 1 of the package 1 is formed. The tail seal Ta is formed by sealing at the rear portion, and the entire surface is covered with the film sheet 3. Further, the gusset G is formed at the bottom of the rear portion of the portion where the top seal To is formed, and the gusset G is formed at the bottom of the front portion of the portion where the tail seal is formed.

As a result, as shown in FIG. 1 (b), in the package A, the portion of "yakisoba" to which the sauce is attached does not come into contact with the inner surface 3i of the film sheet 3, and therefore, depending on the source, the film sheet 3 The inner surface 3i of the is not polluted.
Further, the film sheet 3 does not press the object to be packaged 1 from the outside on the upper part of the object to be packaged 1.
Further, when the package A is held by hand or mechanically gripped and put in or taken out of a box or the like, the upper end portion of the package A, that is, the portion where the center seal Ss is formed is gripped. By doing so, the portion of the "yakisoba" does not come into contact with the inner surface 3i of the film sheet 3.

Then, the object to be packaged 1 can be made into a package A which is mechanically packaged with a film sheet 3 in an inverted pillow format by a packaging device B having a configuration as described below.
That is, the packaging body A shown in FIGS. 1 (a) and 1 (b) described above can be formed by the packaging device B as shown in FIG. Hereinafter, the configuration of the packaging device B and its operation and operation will be described.

As shown in FIG. 2A, the packaging device B according to the present embodiment bends the transport device 10, the film sheet supply device 11 for supplying the sheet-shaped film, and the sheet-shaped film into a U shape. A former 12 to be formed, a center sealing device 13 for sealing both ends of a sheet-shaped film, a top sealing device 14, a tail sealing device 15, a first gusset forming device 16, and a second gusset forming device 17. Is equipped with.

The transport device 10 according to the present embodiment is configured to transport the packaged object 1 from the upstream side to the downstream side in synchronization with the supply speed of the film sheet 3 of the film sheet supply device 11. ..
Then, in this embodiment, the transfer device 10 includes a transfer conveyor 10a which is a first transfer means and a carry-out conveyor 10b which is a second transfer means arranged on the downstream side thereof. ..
Then, the strip-shaped film sheet 3 unwound from the film supply drum 11b of the film sheet supply device 11 is supplied on the transfer surface 10f of the transfer conveyor 10a and the carry-out conveyor 10b.
In this embodiment, a belt conveyor is adopted as the transport conveyor 10a and the carry-out conveyor 10b.
The transport conveyor 10a is configured such that the downstream end (head pulley) can be expanded and contracted in the transport direction (see the direction indicated by the arrow X in FIG. 2A). As a result, during the sealing operation for forming the top seal To and the tail seal Ta, which will be described later, the downstream end of the conveyor 10a retracts in the counter-conveying direction, and the top seal device 14 and the tail shown in FIG. 4B show. When the sealing means 14a and 15a of the sealing device 15 and the wrinkle removing devices 18 and 18 provided corresponding thereto are to be positioned at the operating positions, they do not physically interfere with the transfer conveyor 10a. It is configured in. That is, as shown in FIG. 2B, the downstream end of the transport conveyor 10a contracts upstream to form a gap Sf with the carry-out conveyor 10b, so that the interference is prevented. ing.

As shown in FIG. 2A, the former 12 is provided at the upstream end of the conveyor 10a, and the former 12 reverses the supply direction (movement direction) of the supplied film sheet 3. As shown in FIG. 3A, the film sheet 3 is bent in a U shape so that the central portion of the film sheet 3 in the width direction substantially abuts on the transport surface 10f of the conveyor 10a and both sides thereof. Form a U-shaped state in which the portion of is raised upward.
Then, as shown in FIGS. 2 (a) and 3 (a), the object to be packaged is placed at the center of the film sheet 3 in the width direction by a worker's hand or by a supply device (not shown). 1 is placed.

As shown in FIG. 2A, a drive roller pair 11c for feeding the film sheet 3 in the downstream direction is arranged above the central portion of the conveyor 10a in the transport direction, and is located downstream of the drive roller pair 11c. Is arranged with the center seal device 13 for performing the center seal Ss. The drive roller pair 11c and the center seal device 13 are configured to feed the film sheet 3 to the downstream side at the same speed as the supply speed.
The center seal device 13 includes a pair of left and right rollers 13c having a built-in heater, and is configured to seal (center seal Ss) in a state in which both end portions of the film sheet 3 are overlapped. That is, the center seal device 13 forms the U-shaped film sheet 3 as shown in FIG. 3 (a) into a tubular shape as shown in FIG. 3 (b). Then, the “yakisoba bread” which is the object to be packaged 1 is wrapped inside the tubular film sheet 3 (see FIG. 3 (b)).
As shown in FIGS. 2A and 3A, the dimensions of the center seal Ss in the height direction are located upstream of the center seal device 13 (upstream of the drive roller pair 11c). An adjuster 20 for adjusting the size is arranged, and the dimension can be adjusted with the adjustment knob 20a at the upper end portion.

As shown in FIG. 2, between the transfer conveyor 10a and the carry-out conveyor 10b, the top seal device 14, the tail seal device 15, the first gusset forming device 16, and the second gusset forming device 17, The wrinkle removing devices 18 and 18 and the cutting device Cu are provided so as to be able to retract and enter.
As shown in FIG. 2, the top sealing device 14, the tail sealing device 15, and the wrinkle removing devices 18 and 18 are substantially perpendicular to the transport surface 10f of the transport conveyor 10a in a side view (in the case of this embodiment). The seals are arranged on a common frame 19 so that the inclination angles are approximately 5 degrees upward and the seals are inclined so as to deviate to the downstream side), and the tubular shapes are formed. The film sheet 3 formed in the above is arranged so that the film sheet 3 can be sealed (the top seal To and the tail seal Ta are formed) with the object to be packaged 1 inside. The inclination angle may be about 0 to 7 degrees depending on the length of the object to be packaged 1, the thickness of the film sheet 3, and the like. Specifically, in the case of the object to be packaged 1 having a short length in the transport direction such as rice balls, the inclination angle is approximately 0 degrees and good packaging can be performed. On the other hand, in the case of the object to be packaged 1 having a long length, it is preferable to incline it as described above.
Then, as shown in FIGS. 4A and 4B, the top sealing device 14 and the tail sealing device 15 are arranged so as to be capable of pinching operation (see arrow Y in FIG. 4A). It has a pair of left and right sealing means 14a and 15a. The lower end of the sealing means 14a and the sealing means 15a is configured to be capable of sandwiching the frame 19 toward the center of the film sheet 3 (see arrow Y), and is sandwiched between the sealing means 14a and the sealing means 15a. The top seal To and the tail seal Ta can be formed on the tubular film sheet 3.

Further, as described above, when the top seal To and the tail seal Ta are formed, the space between the top seal To and the tail seal Ta portion is cut by the cutting device Cu, and each packaged object 1 (packaging body A) is cut. It is configured to separate what has been packaged. As a configuration of such a cutting device Cu, for example, as shown in FIG. 5, the sealing means 14a, the sealing means 15a, and a cutting heater portion provided between them are combined into one block 28. It can be realized by arranging it on the plane (surface) of. As the cutting means of the cutting device Cu, other means, for example, a cutter (cutting tool) can be used instead of the cutting heater.
Further, when forming the top seal To and the tail seal Ta (front), as shown in FIG. 2B, the first gussets arranged on both front and rear sides of the frame 19 in the transport direction are formed. The gusset claws 16a and 17a of the device 16 and the second gusset forming device 17 are located above the transport surface 10f and have only the dimensions shown by arrows R (see FIG. 4A) (in this example, from the transport surface 10f). By ascending from below to a height of about half of the object to be packaged 1 and pushing up the bottom surface of the film sheet 3, as shown in FIGS. 1A and 1B, the front end of the package A is used. It is configured to form the gusset G at the bottom of the portion and the rear end portion.
Further, before each seal of the top seal To and the tail seal Ta is formed, the wrinkle removing device 18 provided with the pair of left and right levers 18a shown in FIG. 4 operates to enable rotation of the levers 18a. The rotation of the arranged wrinkle removing belt 18c is configured to remove wrinkles that are likely to occur on the film sheet 3 at the portion to be sealed.
In the case of this embodiment, the lever 18a is configured to be capable of "pinching operation" in which the lower end portion swings around the support shaft 18b at the upper end portion as shown by the arrow Q to sandwich the film sheet 3 from both sides. There is. Then, in the state of being sandwiched as described above, the wrinkles of the film sheet 3 sandwiched between them are removed as much as possible by the rotational operation of the wrinkle removing belt 18c that orbits around the left and right levers 18a. There is.
The top sealing device 14, the tail sealing device 15, and the cutting device Cu are configured such that the one block 28 performs a "pinching operation (see FIG. 4A)" as described above. Alternatively, the block 28 may be configured to abut from both sides to seal and cut by sliding in the horizontal direction. However, in terms of the wrinkle-removing performance, the "pinching operation" having the configuration shown in FIGS. 4 (a) and 4 (b) is preferable in that it can be performed better.

Each block 28 is attached to the frame 19 (FIGS. 2 (a) (b) and 4 (a)) via an arm 29 (FIG. 7 (b)).
A pair of arms 29 are provided on the left and right sides of the frame 19 with the transport direction of the packaged object 1 as the front-rear direction. The tip (lower end) side of the arm 29 is located on the left and right sides of the film sheet 3 which is curved in a U shape with the object to be packaged 1 inside and has a top seal Ss formed on the upper end side.
Each of the paired arms 29 on the base end (upper end) side is axially fixed to the frame 19 (FIGS. 2 and 4). Each of the arms 29 rotates about the base end side.
Due to the rotation of the arm 29, the left and right blocks 28 form a tail seal Ta behind the preceding packaged object 1 with respect to the film sheet 3 by sandwiching the film sheet 3 from the left and right sides of the film sheet 3, and the subsequent cover. A top seal To is formed in front of the package 1, and the film sheet 3 is cut between the tail seal Ta and the top seal To (FIGS. 4 and 5).
In this example, the block 28 is provided to each of the opposing portions of both arms 29 via a support member 30 (FIGS. 7 (b) and 10).
Although not shown, the arm 29 receives a driving force from a well-known power source such as a motor, a power cylinder, or another actuator to open and close as described above.

Here, the wrinkle removing device 18 will be described in more detail.
In this example, each of the pair of wrinkle removing devices 18 includes the lever 18a, the lever driving unit 18f, at least two rollers 18d and 18e, the wrinkle removing belt 18c, and a roller driving unit (not shown). (FIGS. 7 (b) and 8). Hereinafter, the wrinkle removing belt 18c is simply referred to as a belt 18c.
The upper end of the elongated lever 18 is pivotally fixed to the frame 19 by the support shaft 18b. The lever 18a can rotate about the support shaft 18b with respect to the frame 19. The pairing levers 18a open and close between the tips (lower ends) of the levers 18a by the rotation around the support shaft 18b. One of the rollers 18d and 18e is axially fixed to the upper end side of the lever 18a, and the other one of the rollers 18d and 18e is axially fixed to the lower end side of the lever 18b. The belt 18c is hung between both rollers 18d and 18e.
The lever 18a receives a driving force from the lever driving unit 18f and rotates around the support shaft 18a.
The lever drive unit 18f includes a well-known power source such as a motor, a power cylinder or other actuator, and a power transmission mechanism such as a gear or a power transmission belt and a pulley. In this example, the lever drive unit 18f is provided with an electric cylinder or a fluid pressure cylinder.
The lever 18a is an arm, assuming that the lever drive unit 18f (power source) is independent of the power source of the arm, or that power is supplied from the same power source by different power transmission means. It suffices that the opening / closing operation can be performed independently of the opening / closing of 29.

One of the rollers 18d and 18e is a driving roller, and the belt 18c circulates due to the rotation of the driving roller. In this example, the roller 18d on the upper end side of the lever 18a is the driving roller, and the roller 18e on the lower end side of the lever 18a is a driven roller that rotates following the circulating movement of the belt 18c.
The roller 18d, which is a driving roller, rotates by receiving a driving force from the roller driving unit.
The roller drive unit and the roller 18d correspond to the "drive unit" in the claims.
The roller drive unit includes a motor that serves as a drive source, and if necessary, includes a gear that transmits a driving force from the motor, or a power transmission unit such as a drive belt or a pulley.
In the example shown in FIG. 4, both levers 18a share the support shaft 18b and are pivotally fixed to the frame 19, whereas in the examples shown in FIGS. 7, 8 and 10, both levers 18a are respectively. It is pivotally fixed to the frame 19 by a separate and independent support shaft 18b. That is, in the examples shown in FIGS. 7, 8 and 10, the pair of levers 18a are pivotally fixed to the frame 19 by the support shafts 18b arranged on the left and right above the top seal Ss. Further, the pair of levers 18a may be axially fixed to the frame 19 by each of the separate support shafts 18b arranged coaxially.
In FIGS. 4, 7, 8 and 10, the support shaft 18b is hidden by the roller 18d.

Both belts 18c come into contact with the outer surface of the U-shaped film sheet 3 by closing the levers 18a that are opposed to each other by the opening and closing. The section of the annular belt 3 facing the film sheet 3 from the lever 18a becomes a portion that comes into contact with the film sheet 3 by opening and closing the lever 18a. In this section, the belt 18c moves from above to below (in the direction of arrow m in FIG. 8).
Due to the movement of the belt 18c, the section of the belt 18c continuously follows the outer surface of the U-shaped film sheet 3 from the center seal Ss side to the lower side to smooth out wrinkles.
In this example, the length of the lever 18a is larger than the vertical width of the film sheet 3 provided with the center seal Ss, and the upper end of the lever 18a is higher than the upper end of the (center seal Ss) of the film sheet 3 to be conveyed. The lower end of the lever 18b is located below the bottom of the film sheet 3 which is curved with the object to be packaged 1 inside (FIG. 7 (b)).
In this example, a pair of wrinkle removing devices 18 are provided in front of and behind the block 28 (on the upstream side and the downstream side of the block 28 in the transport direction of the packaged object 1) (FIG. 2A). Hereinafter, if necessary, the pair of left and right wrinkle removing devices 18 arranged on the upstream side of the transportation of the packaged object 1 are arranged on the upstream side wrinkle removing device 18 and the downstream side of the transportation of the packaged object 1. Each pair of left and right wrinkle removing devices 18 is referred to as a downstream wrinkle removing device 18.

As described above, when each of the top seal To and the tail seal Ta is operated, when the gusset G is formed, and when the wrinkle removing operation is performed, so as not to interfere with these operations. The downstream end (head pulley portion) of the conveyor 10a contracts (moves) upstream, and a gap Sf is formed between the downstream end of the conveyor 10a and the upstream end of the carry-out conveyor 10b. When the gap Sf is formed in this way, the transfer conveyor 10a is configured to stop the transfer operation.

By the way, as shown in FIG. 2, the carry-out conveyor 10b tilts around the swing shaft 10d at the upstream end as shown by the arrow Rr when the top seal To and the tail seal Ta are sealed. It is configured to swing (tilt) by a predetermined angle Rr (for example, about 15 degrees at the maximum in this embodiment) by expanding and contracting the cylinder 10c (see FIG. 6). When the film sheet 3 is thick, it swings by about 15 degrees, and when the package A is long (for example, yakisoba bread), it swings by about 15 degrees. Such a swinging motion is performed in order to provide a dimensional allowance to the bottom portion of the package A so that the above-mentioned gusset G can be formed smoothly. The predetermined angle Rr can be set to about 0 to 20 degrees depending on the length of the object to be packaged 1, the thickness of the film sheet 3, and the like. Specifically, in the case of the object to be packaged 1 such as rice balls, the predetermined angle Rr is approximately 0 degrees, and good packaging can be performed.
Further, as in this embodiment, the inclination angles of the top seal device 14 and the tail seal device 15 are set to about 1/2 to 1/3 of the swinging predetermined angle of the carry-out conveyor 10b. This is preferable in that the length of the upper part of the package A can be formed longer than the length of the bottom, that is, the dimension of the upper part of the package A can be made longer. That is, a spatial space is formed on the upper part of the package A.
The unloading conveyor 10b is configured to stop the unloading operation during the swinging operation.

Further, as shown in FIGS. 2 (a) and 2 (b) or 4 (a) and 4 (b), the carry-out conveyor 10b swings (tilts) about the swing shaft 10d as shown by an arrow Rr. ), Gripping devices 21 and 22 for gripping the center seal Ss portion are provided adjacent to the upstream side and the downstream side of the frame 19 so that the package A is positioned. .. As shown in FIGS. 4A and 4B, the gripping devices 21 and 22 are a pair of gripping arms 21b and 22b that swing around the upper pivot shaft 21a (22a). It is configured to sandwich the center seal Ss portion of the film sheet 3 from both sides.
In the example shown in FIGS. 4A and 4B, each pair of gripping arms 21b of the upstream gripping device 21 shares one pivot shaft 21a, and a pair of downstream gripping devices 22. Each of the gripping arms 22b also shares the pivot shaft 22a. The pair of gripping arms 21b of the upstream gripping device 21 are pivotally supported by separate pivot shafts 21a arranged coaxially, and the pair of gripping arms 22b of the downstream gripping device 22 are supported. Each of the above may be pivotally supported by separate pivot shafts 22a arranged coaxially.

The gripping devices 21 and 22 include a driving device 27 that drives the gripping arms 21b and 22b (FIGS. 7 (b), 9 and 10). The drive device 27 includes a well-known power source such as a motor, a power cylinder, or an actuator, and transmits the driving force from the power source to the gripping arms 21b and 22b. In this example, the drive device 27 comprises an electric cylinder or a fluid pressure cylinder. The drive devices of the gripping devices 21 and 22 can open and close the gripping arms 21b and 22b which are paired independently of the opening and closing operations of the arms 29 and the wrinkle removing device 18.
More specifically, one gripping device 21 is arranged adjacent to the block 28 in the transport direction of the object to be packaged 1 on the upstream side of the upstream wrinkle removing device 18, and one gripping device 21 is arranged on the downstream side of the downstream wrinkle removing device 18. The gripping device 22 of the above is arranged. That is, a pair of left and right gripping arms 21b are arranged adjacent to the block 28 in the transport direction of the packaged object 1 on the upstream side of the upstream wrinkle removing device 18, and to the downstream side on the downstream side of the downstream wrinkle removing device 18. A pair of left and right gripping arms 22b are arranged.
In FIG. 4, the wrinkle removing guide 26 described below is omitted in order to avoid complication of the drawing.
Further, in the examples shown in FIGS. 7, 9 and 10, each of the pair of gripping arms 21b of the upstream gripping device 21 is formed by separate pivot shafts 21a arranged on the left and right upper sides of the center seal Ss. Each of the pair of gripping arms 22b of the gripping device 22 on the downstream side is also pivotally supported by separate pivot shafts 22a arranged on the left and right upper sides of the center seal Ss.

The wrinkle removing guides 26 are provided on the gripping arms 21b and 22b of the gripping devices 21 and 22, respectively. That is, a wrinkle removing guide 26 is provided on each of the left and right holding arms 21b of the upstream gripping device 21, and a wrinkle removing guide 26 is also provided on each of the left and right holding arms 22b of the downstream gripping device 22. (Fig. 7 (b), Fig. 9 and Fig. 10).
Each of the left and right paired wrinkle removing guides 26 provided on each of the left and right holding arms 21b and 22b extends downward from the respective gripping arms 21b and 22b and operates integrally with the opening and closing of the gripping arms 21b and 22b. Then, the portion of the film sheet 3 below the center seal Ss is pressed.
As described above, the left and right wrinkle removing guides 26 are opened and closed by opening and closing the holding arms 21b and 22b, respectively. That is, when the holding arms 21b and 22b are opened and closed, the left and right wrinkle removing guides 26 approach each other and press the left and right outer surfaces of the film sheet 3 which are bent from the left and right. By pressing the left and right outer surfaces of the film sheet 3 with the wrinkle removing guide 26, prior to the wrinkle removing operation of the two pairs of wrinkle removing devices 18, between the preceding object to be packaged 1 and the subsequent object to be packaged 1. The left and right widths of the film sheet 3 are narrowed.
Each of the paired wrinkle-removing guides 26 includes a curved portion 26a that curves toward the lower end so as to gradually widen the distance between the guides 26. Due to the formation of the curved portion 26a, when the paired wrinkle removing guides 26 are brought close to each other, the film sheet 3 is sequentially pressed from the upper side to the lower side, and the wrinkle removing device 18 is formed from the upper side to the lower side by the belt 18c. The operation of smoothing out wrinkles can be performed more smoothly.
In this example, the wrinkle removing guide 26 employs a rod having a diameter of 3 mm or a plate having a thickness of 2 mm and a width (height) of 50 mm. However, this is an example of the form, dimensions, and examples of the wrinkle removing guide 26, and may be changed according to a change in the dimensions of the film sheet 3.

The block for driving the packaging device B (for example, an inverter type motor or the like), each actuator such as a pneumatic cylinder, and the plurality of detection devices 31, 32, 33 provided at each position are the blocks of FIG. As shown in the figure, it is connected to the control device 25 of the present packaging device B by a signal line, and is configured to receive a detection signal from the detection device and emit a predetermined control signal to perform a predetermined packaging.

The packaging device B according to the present embodiment configured as described above operates as follows when forming the package A, and implements the packaging method according to the present embodiment. That is, the packaging device B can wrap the packaged body 1 placed on the film sheet 3 in the packaged body A in the inverted pillow form described above.
Hereinafter, the packaging operation (packaging method) of the present packaging device B will be described together with the content of control by the control device 25 of the packaging device B.

When the start switch of the packaging device B is turned on, the transfer conveyor 10a, the carry-out conveyor 10b, the film sheet supply device 11, the drive roller pair 11c and the center seal device 13, the top seal device 14, the tail seal device 15, and the wrinkles are turned on. Each device such as the picking device 18 is in the operating state (standby state) (step 1).
In this state, when the object to be packaged 1 is placed on the film sheet 3 on the former, the detection device 31 (FIG. 6) provided near the position of the object to be packaged places the object to be packaged 1. Is detected (step 2).
Upon such detection, the conveyor 10a, the film sheet supply device 11, the drive roller pair 11c, and the center seal device 13 operate to send the film sheet 3 and the object to be packaged 1 on the film sheet 3 to the downstream side. Meanwhile, the center seal Ss is performed by the center seal device 13 (step 3).

Then, when the object to be packaged 1 is transported to a predetermined position near the downstream end of the conveyor 10a, the detection device 32 provided in the vicinity of the predetermined position arrives at the predetermined position. Is detected, the conveyor 10a, the film sheet supply device 11, the drive roller pair 11c, and the center seal device 13 are stopped (step 4).
Next, the control device 25 contracts the downstream end of the transport conveyor 10a to form a gap Sf (see FIG. 2B) with the carry-out conveyor 10b (step 5).
When the detection device 33 arranged in the vicinity of the gap Sf detects that the gap Sf has been formed, the gripping devices 21 and 22 subsequently press the center seal Ss portion of the packaged object 1 at the predetermined position. After gripping, the unloading conveyor 10b swings (tilts) around the swing shaft 10d at the upstream end as shown by the arrow Rr, as shown in FIG. 2 (b) (step 6).

In the state of step 6, the gusset claws 16a and 17a of the first gusset forming device 16 and the second gusset forming device 17 from below in the front portion and the rear portion of the object to be packaged 1 are from the transport surface 10f. The film sheet 3 is lifted by increasing the distance indicated by the arrow R (see FIG. 4A) to the upper position, and a gusset G is formed on the film sheet 3 at a portion close to the front and back of the packaged object 1 (step 7). ).
Further, in the state of step 7, the wrinkle removing device 18 operates to remove wrinkles that are likely to occur on the film sheet 3 near the portion where the top seal To and the tail seal Ta are to be formed (step 8).

The above step 8 will be described in more detail.
From step 1 to step 7, each device of the sealing means 14a of the top sealing device 14, the sealing means 15a of the tail sealing device 15, that is, the block 28, the wrinkle removing device 18, and the gripping devices 21 and 22 is in an operating state ( It is in the standby state). That is, from step 1 to step 7, the pair of arms 29, the pair of levers 18a of the wrinkle removing device 18, and the pair of gripping arms 21b and 22b of the gripping devices 21 and 22 are open.
After or during the execution of step 7, in step 8, first, prior to the operation of the wrinkle removing device 18, both gripping devices 21 and 22 operate to pair the upstream gripping arm 21b and the paired downstream gripping arm 21b. The arms 22b are closed, and the center seal Ss is sandwiched between the upstream gripping arms 21b and the downstream gripping arms 22b, respectively. In the two pairs of wrinkle-removing guides 26 as the gripping arms 21b and 22b move, the pair of wrinkle-removing guides 26 approach each other and press the film sheet 3 from the left and right. Next, in each of the upstream and downstream wrinkle removing devices 18, the levers 18a facing each other are closed, and the film sheet 3 is sandwiched between the preceding object to be packaged 1 and the subsequent object to be packaged 1 from the left and right, and the belt 18c is circulated. Wrinkles of the film sheet 3 are removed at. Note that step 8 may be executed together with the next step 9 in the state of step 6 before the execution of step 7.

After performing the step 8, the top sealing device 14 and the tail sealing device 15 operate. That is, as shown in FIG. 4B, the sealing means 14a and the sealing means 15a (see FIG. 5) of both devices 14 and 15 sandwich the film sheet 3 from the left and right sides of the film sheet 3 (see FIG. 5). (See arrow Y) Form the top seal To and the tail seal Ta (step 9).
Further, along with the formation of the top seal To and the tail seal Ta, the heater of the cutting device Cu is activated, and the film sheet 3 that wraps the leading object to be packaged 1 on the carry-out conveyor 10b is the subsequent object to be packaged. It is separated from the film sheet 3 that wraps 1, and as a result, the package A shown in FIG. 1 is completed.

That is, after the operation of the wrinkle removing device 18 in step 8, the arms 29 facing each other are closed in step 9, and the block 28 between the preceding packaged object 1 and the subsequent packaged object 1 of the film sheet 3. A tail seal Ta is formed behind the preceding object to be packaged 1 and a top seal To is formed to the front of the subsequent object to be packaged 1 while sandwiching from both the left and right sides, and the space between the two seals is cut to form the preceding packaged object 1. Complete the packaging body A for packaging.
In steps 8 to 9, as described above, the wrinkle removing guide 26, the lever 28a (belt 18c), and both the top sealing device 14 and the tail sealing device 15 (block 28) are closed in this order.
Since the object to be packaged 1 does not exist on the carry-out conveyor 10b at the beginning of packaging, only the top seal To in front of the object to be packaged 1 at the head is executed.

Next, the unloading conveyor 10b returns from the oscillating (tilted) state to the horizontal state, the lever 18a of the wrinkle removing device 18, the first gusset forming device 16 and the second gusset forming device 17, and the transport conveyor. The downstream end of 10a returns to the original position (standby position), and the gripping devices 21 and 22 are released (step 10).
In this step 10, immediately after the pair of the blocks 28 (top sealing device 14 and tail sealing device 15) is opened, the pair of the lever 18a (belt 18c) and the wrinkle removing guide 26 (grasping arms 21b of the gripping devices 21 and 22), The pair of 22b) opens.

Then, the carry-out conveyor 10b, the transfer conveyor 10a, the film sheet supply device 11, the drive roller pair 11c, and the center seal device 13 operate again, and the package A on the carry-out conveyor 10b is on the downstream side. Will be carried out to. Since the object to be packaged 1 does not exist on the carry-out conveyor 10b at the beginning of packaging, there is no such carry-out.
Further, along with the carry-out operation, the next object to be packaged 1 moves from the transfer conveyor 10a onto the carry-out conveyor 10b, repeats the series of operations described in steps 4 to 10 and repeats the series of operations described in steps 4 to 10 on the film sheet 3. The placed object 1 to be packaged is sequentially packaged in an inverted pillow form.

As described above, the packaging body A (see FIG. 1) described above is completed by performing a series of packaging steps by the packaging device B.

By the way, in the above-described embodiment, "yakisoba bread" has been described as an example of the object to be packaged 1, but the upper part of the object to be packaged does not come into contact with the film as much as possible or is pressed inward by the film. It may be something that you do not want to be wrapped in, for example, an agricultural product, "shimeji," or it may be a "sushi" or other item. Further, even if the upper part does not come into contact with the film as much as possible or is not pressed inward by the film, it can be packaged in the same form as described above.

Needless to say, the embodiment is merely one embodiment and can be implemented in various forms without departing from the technical idea of the present invention.

(Change example)
The wrinkle removing guides 26 are provided in the gripping devices 21 and 22, but in addition, each of the wrinkle removing guides 26 is provided separately from the gripping devices 21 and 22, and is independent of the gripping devices 21 and 22. It may be opened and closed.
Further, as long as the wrinkle removal can be smoothly performed, the block 28 may be provided only on the upstream side.

In the above-described embodiment, the tail sealing device 15 (sealing means 15a), the top sealing device 14 (sealing means 15a), and the cutting device Cu are provided in each of the pair of blocks 28 and operate integrally. However, each device can be implemented as an independent block.
In the example of FIG. 1, a package A having a gap space Su between the center seal Ss and the object to be packaged 1 is shown, but an upright center seal that is flush with the left and right side surfaces of the top seal To and the tail seal Ta. It suffices as long as it forms Ss, and in the example of FIG. 1, it does not exclude the formation of the package A having no gap space Su.

In the embodiment of FIGS. 1 to 10, the center seal Ss is formed on the package A.
In addition, in the present invention, it is also possible to form a package A which does not have the above-mentioned center seal Ss and has an opening 4 on the upper end side (FIGS. 12 and 13).
The package A shown in FIGS. 12 and 13 is a package suitable for packaging the object to be packaged 1, which dislikes contact with the inner surface of the film sheet or is reluctant to be pressed from the outside by the film sheet. Also in the package A shown in FIGS. 12 and 13, the bottom and both sides of the package A are covered with the film sheet 3 from below while being placed on the film sheet 3, and the left and right sides of the film sheet 3 with respect to the object to be packaged 1. The part is the same as the example of FIGS. 1 to 10 in that the left and right ends of the film sheet 3 are arranged above the object to be packaged 1 with the object to be packaged 1 inside.

On the other hand, in the package A shown in FIGS. 12 and 13, the left and right end portions 3e of the film sheet 3 are not sealed to each other, and the film sheet 3 is covered with the opening 4 that opens at the left and right end portions 3e, that is, the upper end. Top seal To that seals the left and right inner surfaces of the film sheet 3 in an overlapping state in front of the package 1, and a tail that seals the left and right inner surfaces of the film sheet 3 in an overlapping state behind the package 1. Prepared with the seal Ta. Also in the examples shown in FIGS. 12 and 13, the top seal To and the tail seal Ta extend up and down, respectively, in front of and behind the packaged object 1.

The opening 4 opens above the gap space Su above the object to be packaged 1. The object to be packaged 1 can be taken in and out from above the package A through the opening 4.
On both the left and right sides of the film sheet 3, hand-carrying holes 5 that penetrate the film sheet 3 to the left and right are provided at positions below the opening 4 and above the housed object 1.
In this example, the hand-carrying hole 5 is an elongated hole having a width in the front-rear direction (left and right in FIG. 12A) larger than the width in the up-down direction, and has a size suitable for hanging a finger. (Fig. 13).
As long as the finger can be smoothly hung, the hand-carrying hole 5 is not limited to the oval hole shown in FIGS. 12 and 13, but is a rectangle or a polygon other than a rectangle, or a perfect circle or the like. It can be implemented as having a curve other than the circle of the above and a contour surrounded by the curve and a straight line.
Also in the examples shown in FIGS. 12 and 13, a gusset G is formed on the bottom of the film sheet 3 between the top seal To and the object to be packaged 1 and between the tail seal Ta and the object to be packaged 1, respectively. ing.

By forming the hand-carrying hole 5, as shown in FIG. 12, it is possible to carry the package A by passing a finger through the hand-carrying hole 5 and carrying it to the hand h, which makes it easy to carry the package A.
If it is not necessary to stabilize the package A, it may be carried out without forming the gusset G. In the above, for example, when the product is to be displayed or stored by hanging the hand-carrying hole 5 on a wall-hanging hook when it is not held by hand, the gusset G may not be provided on the package A.
However, when the package A is placed on a table or a table, the package A is made stable, and the top seal To and the tail seal Ta are stably turned up and down, and the top seal To and the tail are oriented. It is preferable to form the gusset G on the package A in order to maintain an appropriate distance from the seal Ta. In the above-mentioned package A in which a through hole leading to the gap space Su called the hand-carrying hole 5 is formed and the center seal Ss is eliminated, in order to ensure the stability of the shape, the top seal To and the tail seal Ta are used. It is important to properly form the wrinkles, and the wrinkle removal by the wrinkle removing device 18 and the wrinkle removing guide 26 is more important than the examples of FIGS. 1 to 10.
Conventionally, unlike the packaging device according to the present invention, there has been no device that enables proper formation of a top seal To and a tail seal Ta by removing wrinkles from the wrinkle removing device 18 and the wrinkle removing guide 26. For this reason, it was not even possible to imagine a packaging device A capable of automatically manufacturing a package A having a hand-carrying hole 5 by setting a web having a hand-carrying hole 5.
The packaging device according to the present invention has made it possible to automate the production of the package A having the hand-carrying hole 5, and has been able to provide a hand-carryable package, particularly a self-supporting package, which has never existed before.

In the package A shown in FIGS. 12 and 13, the top seal To and the tail seal Ta are vertically widened so that the distance between the top seal To and the tail seal Ta gradually increases from the bottom to the top. On the other hand, it is tilted. However, as shown in FIGS. 14A and 14B, the top seal To and the tail seal Ta may extend in the vertical direction without being inclined.

On the inner surface of the package A shown in FIGS. 12 and 13, a lining sheet 6 is stretched so as to wrap the front and the back of the package 1 mainly at the lower portion of the package 1.
The lining sheet 6 is a small piece of a plastic film, and is attached to the inside of the film sheet 3 by a well-known fixing means such as an adhesive or crimping.
The lining sheet 3 stabilizes the shape of the package A and provides protection for the package A. Further, when the transparent film sheet 3 in which the object to be packaged 1 can be visually recognized is adopted, the decorativeness of the package A can be enhanced by adopting a colored color film for the lining sheet 6.
However, if it is not necessary to reinforce the package A or improve the decorativeness, the package A may not be provided with the lining sheet 6. ,

With respect to the package A shown in FIGS. 12 and 13, a strip-shaped film sheet 3 (web) provided with a hand-carrying hole 5 shown in FIG. 11a is set in the film supply drum 11b of the film supply device 11. 2 to FIG. 10 can be manufactured using the packaging device B shown in FIG.
Further, in manufacturing the package A shown in FIGS. 12 and 13, the packaging device B operates the heater of the center seal device 13 in a state where it does not generate heat, that is, the center seal Ss is not formed on the film sheet 3. In this case, the center seal device 13 that does not generate heat corresponds to the stacking device in the claims, and the inner surfaces of the left and right end portions 3e of the film sheet 3 are overlapped with each other without sealing. In the production of the package A shown in FIGS. 12 to 14 by the packaging device B, the center seal device 13 as the stacking device 13 is the same as the above-described example described with reference to FIGS. 10 except that heat is not generated.
Although the lining sheet 6 is omitted in the film sheet 3 shown in FIG. 11, the lining sheet 6 is provided together with the hand-carrying hole 5 as a strip-shaped film sheet 3 (web) to be set in the film sheet supply device 11. All you have to do is prepare a new one.
Further, the film sheet 3 is provided with a hand-carrying hole 5 completed as a through hole, and is provided with a weakening line surrounding the area to be the hand-carrying hole 5 at the position where the hand-carrying hole 5 is provided. Occasionally, the area surrounded by the weakening line may be separated to provide a hand-carrying hole 5.

When the opening 4 is provided in the package A, the center seal device 13 may function as a stacking device without generating heat, and when the center seal Ss is provided in the package A, the heater of the center seal device 13 may be heated. One device shown in FIGS. 2 to 10 can be used properly.
However, as a packaging device dedicated to the packaging body A having the opening 4, instead of the center sealing device, a stacking device that does not have a heat generating function and only overlaps the inner surfaces of the left and right end portions 3e of the film sheet 3 is adopted. It is also possible to carry out. As the stacking device, one having the same configuration as the center seal device 13 described above can be adopted except that it does not have a heat generating function (the heating heater described above).

Further, when the packaging device B is a packaging device dedicated to the packaging body A provided with the opening 4, a separate stacking device is adopted as described above, and the drive roller pair 11c of the film sheet supply device 11 is stacked as described above. It may also serve as a device, or the gripping devices 21 and 22 may also serve as the stacking device.

In the above, the pair of left and right rollers 13c of the center seal device 11, the drive roller pair 11c of the film sheet supply device 11, and the gripping devices 21 and 22 may all constitute the stacking device independently. However, the above-mentioned devices that are also used may cooperate to form a stacking device.
In the above, whether the pair of left and right rollers 13c of the center seal device 11 is used as a stacking device or the pair of rollers is separately used as a dedicated stacking device, the drive roller pair 11c of the film sheet supply device 11 and the gripping device 21 , 22 as a stacking device, or when each device cooperates to form a stacking device as described above, at least between the upper end (opening 4) of the film sheet 3 and the hand-carrying hole 5 in the vertical direction. On the other hand, the inner surfaces of the left and right side portions of the film sheet 3 are overlapped with each other by sandwiching them from the left and right (FIG. 11 (b)). That is, in the case of the package A provided with the center seal Ss, the inner surfaces of the left and right side portions of the film sheet 3 are overlapped with each other by the stacking device at the position where the center seal Ss is provided.
In the examples of FIGS. 12 to 14, although the center seal Ss is not provided, the top seal To and the tail seal Ta that extend vertically in a stable state in the gusset G, and the top seal To and the tail seal Ta are surrounded and opened. By configuring the package A as a self-supporting self-supporting pack (stand pack) having a gap space Su arranged between the part 4 and the object to be packaged 1, the upper part of the object to be packaged 1 is , Top seal To, tail seal Ta, and both left and right sides of the film sheet 3 supported by both seals To and Ta and surrounding the gap space Su are protected.

Even in the package A having the center seal Ss and not having the opening 4, the hand-carrying hole 5 may be provided. When the hand-carrying hole 5 is provided in the package A provided with the center seal Ss, the film sheet 3 shown in FIG. 11A is used, and the center seal Ss is formed by the center seal device 13 in the same manner as the package A in FIG. You just have to do it.
Further, when the center seal Ss is provided on the film sheet 3 provided with the hand-carrying hole 5, the center seal Ss is formed at the same position as the package A in FIGS. 1A and 1B above the hand-carrying hole 5. .. However, it does not exclude the formation of the center seal Ss below the hand-carrying hole 5.
For example, in the vertical direction, a stacking device separate from the center seal device 11 is arranged above the center seal device 11, and the position above the center seal Ss of the film sheet 3 is stacked by the stacking device. By forming the center seal Ss with the center seal device 11, it is also possible to form the package A having the center seal Ss below the hand-carrying hole 5.
In the examples shown in FIGS. 11 to 14, the matters not particularly mentioned are the same as those shown in FIGS. 1 to 10.

An example in which the package A is further modified will be described.
This example relates to the package A shown in FIGS. 12 and 13, that is, the package A in which the center seal Ss is not provided between the left and right end portions 3e of the film sheet 3 and is not sealed by the center seal Ss.
Specifically, in the package A, the film sheet 3 has the opening 4 opened at both left and right ends 3e (upper end of the package A) and the left and right of the film sheet 3 in front of the object to be packaged 1. The package A is provided together with a top seal To that seals the inner surfaces of the films in an overlapping state and a tail seal Ta that seals the left and right inner surfaces of the film sheet 3 in an overlapping state behind the object to be packaged 1. A simple closing portion 7 for closing between the left and right side portions of the film sheet 3 is provided on the opening 4 side of the packaged object 1 (FIGS. 16, 18 and 19).

The simple closing portion 7 closes the opening 4 side so as to be openable and closable. By closing the simple closing portion 7, the contained object 1 is restricted from exiting the package 1 from the opening 4, and the contained object 1 suddenly exits the package A from the opening 4. It is prevented from being stowed (Fig. 19 (a)).
By opening the simple closing portion 7, the contained object 1 can be taken out from the opening 4 to the outside of the package A (FIG. 19 (b)). The package A after use can close the opening 4 again. Therefore, the package A can be reused by the consumer, and the package 1 which is preferable from the viewpoint of ecology in recent years can be provided.

In this example, the simple closing portion 7 is provided on the inner side surface of at least one of the left and right side portions of the film sheet 3, and includes an adhesive seal extending in the front-rear direction orthogonal to the left and right and the top and bottom of the package A ( 16 and 18). In addition, the simple closing portion 7 can also be implemented as having a plurality of adhesive seals intermittently arranged in the front-rear direction of the package A.
The simple closing portion 7 is preferably provided below the opening 4 and above the object to be packaged 1. However, the simple closing portion 7 may be provided in the opening 4 or between the opening 4 and the hand-carrying hole 5. It is also possible to provide a simple closing portion 7 in the packaging body A that does not have the hand-carrying hole 5.

Further, in the packaging body A having no opening 4, for example, in the packaging body A shown in FIG. 1, an opening portion extending in the front-rear direction is provided between the object to be packaged 1 and the center seal Ss, and the packaging body A is opened at the opening portion. The package A may be opened and closed by providing the simple closing portion 7 between the opened portion and the object to be packaged 1 and then opening and closing the package A by the simple closing portion 7 (not shown). ). The opening portion can be implemented as a weakening line that is easier to cut than other parts of the film sheet 3, such as a cutting line. Further, the package A can be opened by providing the weakening line or by providing a notch such as a notch in the top seal To or the tail seal Ta and tearing the film sheet 3 from the notch. It may be a thing.
As shown in FIGS. 16 and 18, in this example, the contained object 1 is easily damaged such as fruit, and is wrapped in the cushioning material 1k and packaged. As the cushioning material 1k, a bubble wrap material composed of a resin sheet having a plurality of bubbles can be adopted.
In the example shown in FIGS. 16 and 18, two objects to be packaged 1 are wrapped in one cushioning material 1k. When the cushioning material 1k is used, when a plurality of objects to be packaged 1 are housed in one package A, each packaged object 1 may be wrapped with the cushioning material 1k (FIG. 20). The object to be packaged 1 may be wrapped with one cushioning material.

Here, a modified example of a packaging device for automatically providing the cushioning material 1k to the packaging body A will be described with reference to FIGS. 21 and 22.
This packaging device includes a cushioning material supply device k. The cushioning material supply device k rotatably holds a web in which the cushioning material 1k (sheet-like) is wound in a roll shape. Specifically, the cushioning material supply device k includes a core rod that is passed through the center of the web and holds the web rotatably.

The cushioning material 1k is pulled out from the cushioning material supply device k and is placed on the film sheet 3 (inner side surface of the film sheet 3). The cushioning material 1k drawn out from the cushioning material supply device k is inverted by the former 12 in the same manner as the film sheet, so that the cushioning surface 1ka is directed upward. The cushioning surface 1ka is a surface that comes into contact with the object to be packaged 1 (FIG. 22 (c)). In FIGS. 22 (b) and 22 (c), 1 kb indicates a surface of the cushioning material 1 k opposite to the cushioning surface 1 ka. As described above, the cushioning material 1k is stacked on the film sheet 3 and pulled out together with the film sheet 3 (FIGS. 21 and 22).
Even if the cushioning material 1k is not directly sandwiched between the drive roller pair 11c, the film is formed by the formation of the top seal To on the film sheet 3 by the top seal device 14 and the frictional resistance between the film sheet 3 and the film sheet 3. It can be sent together with the sheet 3.
Then, by forming the above-mentioned top seal To and tail seal Ta on the film sheet 3, the cushioning material 1k is fused to each of the seals and integrated with the film sheet 3.

Regarding the cushioning material 1k, the left and right widths are smaller than the left and right widths of the film sheet 3 (FIG. 22 (a)), and in the examples shown in FIGS. 16 and 18, the upper part of the object to be packaged 1 is not covered, but the material to be packaged. The upper part of the object 1 may be covered with the cushioning material 1k.
In particular, in the package A provided with the center seal Ss, the left and right widths of the cushioning material 1k are the same as the left and right widths of the film seal 3 (FIG. 1), and the left and right ends of the cushioning material 1k are also together with the left and right ends of the film sheet 3. It can be sealed with the center seal Ss.
As for the above-mentioned cushioning material 1k, it is preferable to adopt the above-mentioned bubble wrap having a plurality of bubble portions protruding from the cushioning surface 1ka as shown in FIG. 22 (c). However, it is also possible to use a cushioning material 1k other than the bubble wrap material. For example, it is also possible to use one made of a foaming material such as Styrofoam or sponge.

The formation of the simple closing portion 7 on the package A will be described.
As the strip-shaped film sheet 3 (web) to be set in the film sheet supply device 11, a band-shaped film sheet 3 (web) provided with a simple closing portion 7 in advance like the above-mentioned hand-carrying hole 5 is prepared (FIG. 15 (a)).
Then, the closing device 8 is arranged on the downstream side of the device shown in FIG. 2 (FIG. 15 (b)).
In the closing device 8, the transport portion 73 arranged on the downstream side of the discharge conveyor 10b in the transport direction of the package A and the simple closing portion 7 of the package A placed on the transport unit 73 are combined with each other on the film sheet 3. It includes a closing operation unit 70 that presses from the outside.

The transport unit 73 is a well-known conveyor such as a belt conveyor in this example, and moves the package A transported from the discharge conveyor 10b further downstream in the transport direction.
The closing operation unit 70 operates the pressing unit 71 that presses the position of the simple closing unit 7 of the film sheet 3 of the package A on the transport unit 73, the operating unit 72 that supports the pressing unit 71, and the operating unit 72. It is provided with a positioning portion 74 for blocking the inner packaging body A, and a pressing position fixing portion 75 for pulling and extending the portion to be pressed by the pressing portion 71 of the packaging body A during the pressing.
The positioning unit 74 is a plate-like body provided on the downstream side of the transport unit 73, and protrudes vertically from the lower end of the transport unit 73 to the transport surface of the transport unit 73. In this example, the positioning portion 74 is fixed to a piston rod that appears and disappears from the cylinder by fluid pressure. When the positioning unit 74 detects that the package A has reached the transport unit 73 by the position sensor (not shown), it projects upward from the transport surface and dams the package A. The positioning unit 74 maintains a state of protruding upward from the transport surface while the closing operation unit 70 closes the simple closing unit 7, and when the closing operation of the closing operation unit 70 is completed, the positioning unit 74 is below the transport surface. It sinks into and advances the package A to the downstream side.

The closing operation portion 70 includes a support portion 72a and an elevating portion 72b that is supported by the support portion 72a and moves up and down with respect to the support portion 72a (FIGS. 15 (b) and 23 (a) to (d)).
The elevating portion 72b is provided with the operating portion 72. The operating portion 72 presses the pressing portion 71 against the package A by operating.
The support portion 72a includes a top plate frame 72d and a support 72s that supports the top plate frame 72d. The support 72s is rotatably supported by a support body 34 (FIG. 3B) that supports the center seal device 13 and the drive roller pair 11c. In this example, the above-mentioned frame 19 (FIG. 4) is also supported by the support main body 34 together with the above-mentioned support 72s.
The support 72s is a columnar body provided with a height adjusting mechanism (FIG. 23). The height adjusting mechanism includes an insertion portion 72t provided in the top plate frame 72d and provided with a hole for passing the support 72s, and an operation portion 72u. A female screw is formed in the hole of the insertion portion 72t. The support 72s is provided on the outer peripheral surface with a male screw that meshes with the female screw of the insertion portion 72t. The operation unit 72u is provided at the upper end of the support 72s. The height of the elevating part 72b including the top plate frame 72d can be adjusted by rotating the support 72s by operating the operation part 72u. In this example, the operation unit 72u is a handle provided on the upper part of the support 72s.

The top plate frame 72d includes a power unit 72e that raises and lowers the elevating unit 72b. The power unit 72e is a cylinder (vertical moving cylinder) in this example. The vertical movement cylinder, which is the power unit 72e, accommodates a cylinder shaft 72f (hereinafter, simply referred to as a shaft 72f), and causes the shaft 72f to project downward by fluid pressure. That is, the vertical movement cylinder moves the shaft 72f up and down by causing the shaft 72f to appear and disappear.
Further, one or a plurality of guide bars 72g projecting downward from the top plate frame 72d are fixed to the top plate frame 72d.

At the tip (lower end) of the shaft 72f, a hanging metal fitting 72h and a frame plate 72i are integrally provided as the elevating portion 72b. The frame plate 72i is provided with a guided portion 72j guided by the guide bar 72g. The guided portion 72j is a tubular body that is fitted into the guide bar 72g and moves up and down along the guide bar 72g. By guiding the guided portion 72h to the guide bar 72g, it is possible to stabilize the elevating and lowering of the elevating portion 72b.

The pressing position fixing portion 75 and the operating portion 72 are provided on the tip end (lower end) side of the shaft 72f. Specifically, the pressing position fixing portion 75 and the operating portion 72 are provided on the hanging metal fitting 72h and the frame plate 72i.
The pressing position fixing portion 75 includes a fixing claw 75a and a tension claw 75b. The fixing claw 75a and the tension claw 75b are lowered from above the package A by the elevating part 72b (frame plate 72i and hanging metal fitting 72h) while the positioning portion 74 dams the package A on the transport portion 73. It is inserted into the package A through the opening 4 of the package A. Regarding the insertion, the fixing claw 75a is inserted to the downstream side of the tension claw 75b, while the tension claw 75b is inserted into the package A and then moves away from the fixing claw 75a, that is, to the upstream side. It moves and stretches in the direction of widening the space between the upstream end and the downstream end of the package A opening 4 in the front-rear direction, and stabilizes the shape of the package A with the simple closing portion 7 extended (FIG. 23 (FIG. 23). b) (c)). The pressing portion 71 presses the position of the simple closing portion 7 extended above with respect to the packaging body A from the left and right sides of the packaging body A (FIGS. 17 and 23 (b)). That is, the above-mentioned positions of the package A are sandwiched between the paired pressing portions 71, the left and right inner surfaces of the package A are brought into contact with each other, and the simple closing portions 7 close the inner surfaces.

More specifically, the pressing position fixing portion 75 is housed in the cylinder (pulling drive cylinder) and the tension driving cylinder as the tension power unit 75c, and is accommodated in the tension driving cylinder in the transport direction from the inside of the tension driving cylinder by fluid pressure. It is provided with a rod 75d that appears and disappears toward the upstream side (FIGS. 15 (b) and 23 (c)). The base end side of the tension claw 75b is fixed to the tip of the rod 75d. The tension claw 75b is a rod-shaped body that extends downward from the tip of the rod 75d, and performs the pulling operation by the above-mentioned infestation of the rod 75d. The fixing claw 75a is a long rod-shaped body that is fixed to the frame plate 72i and extends downward from the frame plate 72i. The fixed claw 75a and the tension claw 75b are placed on the surface of the package A that comes into contact with the package A (the surface of the fixed claw 75a on the downstream side in the transport direction, and the surface of the tension claw 75b on the upstream side in the transport direction). , With taper. Each of the tapers is an inclined surface in which both claws are tapered downward so that the fixed claw 75a and the tension claw 75b can be smoothly inserted.

The closing operation unit 70 includes a pair of rod-shaped left and right arms axially supported on the hanging metal fitting 72h as the operation unit 72 (FIGS. 23 (a), (b), and (c)). Each of the above arms (acting portion 72) extends downward with a gap between the arms. On the tip (lower end) side of each arm, the pressing portion 71 is provided on each of the inner side surfaces of both arms facing each other. Further, a pair of gears 72m that mesh with each other are provided at the bases of both arms (acting portion 72).
Further, the closing operation unit 70 includes an operating rod 72n, a pressing power unit 72p, and a link member 72r. The pressing power unit 72p is a cylinder (pressing cylinder) attached to the frame plate 72i, and accommodates the operating rod 72n as a piston rod, and causes the operating rod 72n to appear and disappear from the pressing power unit 72p by fluid pressure. The link member 72r is a rod or plate-like body interposed between the tip of the operating rod 72 and the one arm (acting portion 72). One end of the link member 72r is pivotally supported by the operating rod 72n and the other end is pivotally supported by the arm, so that the link member 72r links the operating rod 72n with the arm.
As shown in FIGS. 15 (b) and 23 (c), the actuating portions 72 are provided with two pairs of actuating portions 72, which are paired to the left and right in this example, with the transport direction as the front-rear direction.
The pressing portion 71 is a rod or plate-like body extending in the front-rear direction. The front-rear length and vertical width of the pressing portion 71 shall cover the simple closing portion 7 (FIG. 23).

When the link member 72r transmits the moving movement of the operating rod 72n with respect to the pressing power unit 70 to the one arm (acting portion 72), the arm (acting portion 72) rotates about the base end portion. When one of the gears 72m is rotated by this rotation, the other one of the gears 72m is also rotated, and the other arm (acting portion 72) is also rotated. The rotation of both arms (acting portion 72) opens and closes between the arms (acting portion 72). By the opening and closing, the pressing portions 71 are close to each other, and the position where the simple closing portion 7 of the packaging body A is located is sandwiched between the pressing portions 71 and pressed from the left and right sides of the packaging body A.
Instead of the link member 72r, a rack mechanism having the gear 72m as a pinion can be adopted.

In the examples shown in FIGS. 15B, 17 and 23 above, the operating portion 72 rotates around its own base end side to operate the pressing portion 71 provided on the tip end side. .. In addition, the operating portion 72 is accommodated in the cylinder as a piston rod in which the pressing portion 71 is fixed to the tip, and appears and disappears from the cylinder by fluid pressure to bring the pressing portion 71 closer to the package from the left and right sides of the package A. (Not shown).

The closing device 8 can be attached to the packaging device B shown in FIG. 2A as an optional item.
Further, the closing operation unit 70 is not provided with the operation unit 72, and the pressing unit 71 is a pair of left and right rollers, and the simple closing unit 7 is closed by sending the film sheet 3 between the rollers. May be. The roller may be driven to rotate, or may not rotate and may only rotate following the movement of the package A. When the closing operation unit 70 is composed of the above rollers, the transport unit 73 can be implemented as continuously feeding the package A without stopping.

The closing device 8 is detachably attached to the packaging device B of FIG. 2A as an optional item, and is a package on the downstream side of the packaging device B of FIG. 2A, that is, after the tail seal Ta is formed. It is assumed that it works for A. In addition, the closing device 8 can also be implemented as being integrally incorporated in the packaging device shown in FIG. 2 (a).
Further, in the formation of the packaging body A in which the closing device 8 is not configured separately from the packaging device B and the center seal Ss is not provided (the opening 4 is provided), the roller of the center sealing device 13 is used as the pressing portion 71. It may be the one to do.

In the illustrated example, the simple closing portions 7 are provided only on the left and right sides of the film sheet 3, but may be provided on both the left and right sides of the film sheet.
Further, in addition to closing the simple closing portion 7 with the above closing device, the packaging body A is formed by the film sheet 3 to which the release paper (release paper) is attached to the simple closing portion 7, and after the packaging body A is formed. A finger may be inserted through the opening 4 and the release paper may be manually peeled off to close the simple closing portion 7 (not shown).
A well-known closing means other than the adhesive tape may be adopted for the simple closing portion 7. For example, a zipper similar to a well-known plastic bag with a zipper may be provided on the packaging body A to form the simple closing portion 7.
Items other than those specifically mentioned with respect to the examples shown in FIGS. 15 to 23 are the same as those of the embodiments shown in FIGS. 1 to 14.

In the above, the simple closing portion 7 is provided with an adhesive seal extending in the front-rear direction of the package A. That is, the simple closing portion 7 has an adhesive seal as a component. In addition, the simple closing portion 7 may be formed of a well-known cold seal. A cold seal is a seal that can reusably crimp sheets to each other without applying heat.
Specifically, a coating layer of a cold sealant is uniformly provided on the entire inner surface of the film sheet 3. In the film sheet 3 provided with the adhesive seal shown in FIGS. 15 to 23, the local portion having the adhesive seal is thicker than the other parts of the film sheet 3 due to the adhesive seal, and is orthogonal to the longitudinal direction. With the film sheet 3 having a relatively small width in the direction, it is difficult to prepare a film sheet 3 that is accurately wound into a roll as shown in FIG. 15 (a).
However, as described above, by coating the entire inner surface of the film sheet 3 with a cold sealant, the portion pressed by the pressing portion 72 can be sealed as the simple closing portion 7, and the thickness of the local portion is larger than that of the others. Solved the problem of growing up.

(Summary)
In the present invention, the film sheet 3 is curved in a U shape with the object to be packaged 1 inside, and the film sheet 3 is sealed before and after the object to be packaged 1 to form a top seal and a tail seal. Prior to the operation of the wrinkle removing device 18 that stretches the portion of the film sheet 3 that forms the top seal and the tail seal before forming the seal and the tail seal, and the wrinkle removing device 18, the film sheet 3 is pressed from the left and right to be packaged in advance. Provided is a packaging device provided with a wrinkle removing guide for narrowing the left and right widths of a film sheet that bends between an object 1 and a subsequent object to be packaged 1.
With this packaging device, wrinkles on the top seal and tail seal can be reliably reduced.

The present invention can be used in various industrial fields such as packaging of foods, agricultural products, livestock products such as meat, medical products, and packaging of electronic parts and parts of precision machinery.

A Packaged Cu cutting device G Gazette h Hand k Cushioning material supply device Sf Gap Su Gap space Ss Center seal Ta Tail seal To Top seal 1 Packaged 1k Cushioning material 1ka Cushioning surface 1b (of package 1) Bottom
1e (of the object to be packaged 1) end 1s (of the object to be packaged 1) side 3 film sheet 3e (in the width direction of the film sheet 3) end 3i (of the film sheet 3) inner surface 4 opening 5 (film sheet) 3) Hand-carrying hole 6 Lined sheet 7 Simple closing part 8 Closing device 10 Conveying device 10a (Conveying device 10) Conveying conveyor 10b (Conveying device 10) Carrying out conveyor 10c (Delivery conveyor 10b) Tilt cylinder 10d Swing shaft 10f Conveying surface 11 Film sheet supply device 11b Film supply drum 11c Drive roller pair 12 Former 13 Center sealing device 13c (center sealing device 13) roller 14 Top sealing device 14a (top sealing device 14) Sealing means 15 Tail sealing device 15a Sealing means 16 (of the tail sealing device 15) Gazette claw 17 of the first gusset forming device 16a (of the first gusset forming device 16) Second gusset forming device 17a (of the second gusset forming device 17) Gazette claw 18 Wrinkle removal device 18a (wrinkle removal device 18) lever 18b Support shaft 18c (wrinkle removal device 18) wrinkle removal belt 18d (wrinkle removal device 18) roller 18e (wrinkle removal device 18) roller 18f (wrinkle removal device 18) Lever drive unit 19 Frame 20 Adjuster 20a (Adjuster 20) Adjustment knob 21 (Upstream side) Gripping device 21a (Gripping device 21) Pivot shaft 21b (Gripping device 21) Gripping arm 22 (Downstream side) Gripping device 22a (of the gripping device 22) pivot shaft 22b (of the gripping device 22) gripping arm 25 control device 26 wrinkle removal guide 26a (of the wrinkle removing guide 26) curved portion 27 (of the gripping device 22) drive device 28 block 29 Arm 30 Support member 31 Detection device 32 Detection device 33 Detection device 34 Support body 70 (closing device) Closing operation unit 71 (closing operation unit 70) Pressing unit 72 (closing operation unit 70) operating unit 72a Support unit 72b Elevating Part 72d Top plate frame 72e Power part (vertical movement cylinder)
72f shaft (cylinder shaft)
72g Guide bar 72h Hanging bracket 72i Frame plate 72j Guided part 72m Gear 72n Operating rod 72r Link member 72s Support 72t Insertion part 72u Operation part 73 Transport part
74 Positioning part 75 Pressing position fixing part 75a Fixing claw 75b Pulling claw 75c Pulling power part (pulling cylinder)
75d rod

Claims (7)

A packaging body suitable for packaging an object to be packaged, which dislikes contact between the inner surface and the upper portion of the film sheet or dislikes the upper portion being pressed from the outside by the film sheet.
With the object to be packaged placed on the film sheet, the bottom and both sides are covered with the film sheet from below, and the left and right parts of the film sheet with respect to the object to be packaged are the object to be packaged. The left and right ends of the film sheet are arranged above the packaged object with the inside facing.
The left and right ends of the film sheet are not sealed to each other, and the film sheet is sealed in a state where the opening opened at the upper end and the left and right inner surfaces of the film sheet are overlapped in front of the packaged object. It is provided with a top seal to be sealed and a tail seal to seal the left and right inner surfaces of the film sheet in a state of being overlapped behind the object to be packaged.
The top seal and the tail seal extend up and down in front of and behind the packaged object, respectively.
A gusset is formed on the bottom of the film sheet between the top seal and the packaged object and between the tail seal and the packaged object, respectively.
The opening opens above the packaged object through a gap space between the packaged object and the packaged object, and allows the packaged object to be taken in and out.
A package body characterized in that the left and right side portions of the film sheet are provided with hand-carrying holes penetrating the film sheet at positions below the opening and above the object to be packaged. The package has a simple closing portion that closes between the left and right sides of the film sheet toward the opening side of the packaged object.
The simple closing portion closes the opening side so as to be openable and closable, and the closing of the simple closing portion restricts the contained object from exiting the package from the opening.
Wherein said contained object at the opening of the simple closure can be taken out to the outside of the package through the opening, reusable claim 1 package according. The simple closing portion is provided on the inner side surface of at least one of the left and right side portions of the film sheet, and extends in the front-rear direction orthogonal to the left-right and top-bottom of the package, or is intermittently arranged in the front-rear direction. The package according to claim 1 or 2, which is provided with an adhesive seal. The package according to claim 2 or 3 , wherein the simple closing portion is provided below the opening and above the object to be packaged. A transport device provided with a transport means for transporting an object to be packaged from upstream to downstream, a film sheet supply device that supplies a strip-shaped film sheet side by side with the transport surface of the transport device, and the film sheet. When the strip-shaped film sheet is supplied from the supply device to the transport surface side, the packaged object and the film sheet are bent in a U shape with the transport direction of the packaged object and the film sheet in the front-rear direction and the left and right ends of the film sheet facing upward. A former is provided, and the objects to be packaged are sequentially placed on the film sheet bent in a U shape by the former so as to be separated from each other. A tail seal device that forms a tail seal that extends vertically to the rear of the packaged object that precedes each other, and a front of the packaged object that follows the film sheet between the separated objects to be packaged. A top seal device that forms a top seal that extends up and down, a second gusset forming device that pushes up the film sheet from below behind the packaged object to form a gusset on the film sheet, and a front surface of the packaged object. The film sheet is provided with a first gusset forming device that pushes up the film sheet from below to form a gusset, and the tail sealing device overlaps the left and right inner surfaces of the film sheet behind the preceding packaged object to seal the film sheet. The tail seal is sequentially formed on the preceding package of the package to be packaged, and the top seal device superimposes and seals the left and right inner surfaces of the film sheet in front of the subsequent package to be packaged. The top seal is sequentially formed on the package of the packaged object, and when the tail seal and the top seal are formed, the second gusset forming device and the first gusset forming device are used to form the packaged object and the tail. It is used by being attached to a packaging device that forms the gusset on the film sheet between the seal and the object to be packaged and the top seal, respectively.
It is provided with a transport unit provided on the downstream side of the transport device and moving the package transported from the transport device further downstream in the transport direction, and a closing operation unit.
The closing operation portion is arranged at least in pairs on the left and right sides of the packaging body, and supports and supports a pressing portion that presses a position of a simple closing portion on the film sheet of the packaging body on the transport portion and the pressing portion. The operating portion that presses the pressing against the packaging body, the positioning portion that blocks the packaging body during the operation of the operating portion, and the portion that is pressed by the pressing portion of the packaging body during the pressing are pulled in the transport direction. It is provided with a pressing position fixing part that extends and extends.
The pressing portion closes the simple closing portion by pressing the left and right side portions of the film sheet from the outside of the left and right side portions and bringing the left and right side portions into close contact with each other at the simple closing portion. The device for closing a simple closing portion of a package according to any one of claims 2 to 4. The pressing position fixing portion includes a fixing claw and a tension claw.
The fixing claw and the tension claw descend from above the package while the positioning portion blocks the package onto the transport portion, and are inserted into the package through the opening of the package. Regarding the insertion, with respect to the transport direction of the transport portion, the fixed claw is inserted to the downstream side of the tension claw, while the tension claw is inserted into the package and then moves away from the fixed claw, that is, to the upstream side. The package is stretched in a direction that widens the space between the upstream end and the downstream end of the opening of the package in the front-rear direction, and the simple closing portion is extended to stabilize the shape of the package.
The pressing portion presses the position of the simple closing portion extended by the pressing position fixing portion against the packaging body from the left and right sides of the packaging body, and the pressing portion of the packaging body forms a pair. The closure of the simple closing portion of the packaging body according to claim 5, wherein the left and right inner surfaces of the packaging body are brought into contact with each other across the position, and the inner side surfaces are closed at the simple closing portion. Device. A support portion and an elevating portion that is supported by the support portion and moves up and down with respect to the support portion are provided.
The elevating portion is provided with the pressing position fixing portion and the operating portion.
The positioning portion is a plate-like body provided on the downstream side of the transport portion and protruding from the lower end of the transport portion in the vertical direction from the transport surface of the transport portion.
When the positioning portion detects that the package has reached the transport portion by the position sensor, the positioning portion projects upward from the transport surface to block the package, and the closing operation portion simply closes. A device that maintains a state of protruding upward from the transport surface while closing the portion, and when the closing operation of the closing operation portion is completed, sinks downward from the transport surface and advances the package to the downstream side. The closing device for the simple closing portion of the package according to claim 6.