JP2005119746A - Packaging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging device which is structurally simplified to be made compact in size, generates fewer troubles, and can easily cope with the size change of a packaging body (A) to be produced. <P>SOLUTION: A long sheet (1) transferred one by one is folded in its width direction for forming a front face sheet part (1a) and a back face sheet part (1b). A side seal part (11) is formed in its downstream side by heating and pressing the sheet parts (1a) and (1b) excluding both top band shaped areas (17) and (18) along the part (1a) top side and the part (1b) top side. A lateral cut is formed extending laterally from the top of the side seal part (11), both top band shaped areas (17) (18) are guided to be apart in its downstream side, and an item to be filled is filled in a downward bag part (16) between the areas (17) and (18) mutually guided apart. The opening of the bag part (16) is sealed in its downstream side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a packaging apparatus for continuously producing a large number of packages from a long sheet.

As a conventional packaging device for continuously producing a large number of packages from a long sheet, a device having a structure as shown in FIG. 16 is known.
In this, a long sheet (1) that is sequentially drawn out from a film roll (not shown) (a sealant layer for heat sealing is formed on the inner surface) is folded half-width from the feed roller (20) to the side sealing machine (21). The side seal portions (11) having a constant pitch are formed by heating and pressing with the heater blocks (21a) (21b) of the side seal machine (21).
Next, the side seal portion (11) of the long sheet (1) is sequentially cut with a cutting machine (22) to cut out the upper open packaging bag (161), and the width direction of each packaging bag (161) Both ends are clamped with pinches (24a) (24b). Thereafter, the suction heads (23a) and (23b) are separated from each other in the state where the suction heads (23a) and (23b) are attracted to the front and back sheets of each packaging bag (161), and at the same time, the pinches (24a) and (24b) are brought close to each other, thereby 161) Open the top filling port (160). Then, after supplying an article to be packed from the filling device (25) to the filling port (160) in an open state, the filling port (160) is heated by the heater blocks (26a) and (26b) of the top seal device (26). The package (A) is completed when sandwiched and heat sealed.
JP-A-11-28773

However, the conventional packaging apparatus described above has the following problems.
1. The equipment becomes complicated and large.
In the above-mentioned conventional one, the individual packaging bags (161) are cut by the cutting machine (22) before filling the packaged items. Therefore, not only a transfer device (not shown) is required to transfer each cut packaging bag (161) to the mechanism of the pinch (24a) (24b), but also as shown in FIG. Many devices such as pinch (24a) (24b) that holds both ends of the packaging bag (161) in the conveying direction separately, and suction head (23a) (23b) for opening the filling port (160) This complicates the structure of the apparatus. In addition, the overall packaging apparatus becomes larger due to the complicated structure.

2. Failure is likely to occur.
When opening the filling port (160) of the packaging bag (161), it is necessary to synchronize the operation of separating the suction heads (23a) and (23b) from each other and the operation of bringing the pinches (24a) and (24b) close to each other. is there. Therefore, many movable parts such as the movable parts such as the pinches (24a) and (24b) and the suction heads (23a) and (23b) and the movable mechanism for synchronization are required, so that failure is likely to occur.

3. It takes time to cope with the size change of the package (A).
When manufacturing packages (A) of different sizes, it is not only necessary to change the mutual spacing of the pinches (24a) (24b) according to the width of the packaging bag (161), but also to each suction head (23a ) (23b), it is necessary to change the pitch in the transport direction, and a lot of adjustment work is required, so it takes time to change the size of the package (A).
This invention is made | formed in view of this point, and makes it a subject to aim at size reduction of a packaging apparatus and reducing generation | occurrence | production of a failure by simplifying a structure. It is another object of the present invention to easily cope with the size change of the package (A) to be manufactured.

(1) The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
`` Folding station that forms a front sheet part and a back sheet part where the lower sides are connected by folding the long sheet (1) conveyed in the longitudinal direction in the width direction,
The top sheet portion and the back sheet portion that are in an overlapped state are heated and pressed from the front and back, leaving both upper belt-like areas along the upper side of these, and the inner sealant layers are welded together to form a side seal portion. A side seal station to
A slit forming station for forming in each upper strip area a transverse cut extending in the longitudinal direction of the upper strip area from the upper portion of each side seal portion that is sequentially formed in the side seal station;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A filling station that fills a bag part between a pair of side seal parts from between the upper belt-like areas separated from each other at the opening station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the entrances of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
And a cutting station for cutting off the package (A) sequentially supplied to the downstream side of the final sealing station.
Here, “heating clamping pressure” means that the sealant layers are heated and melted while being pressed against each other, such as an impulse seal, an ultrasonic seal, and a hot plate seal. (Same as below).

According to this, the long sheet (1) conveyed in the longitudinal direction is folded in the width direction at the folding station, whereby the top sheet portion and the back sheet portion that overlap the front and back surfaces are formed.
Next, when the top sheet portion and the back sheet portion in a superposed state at the side seal station are heated and pressed from the front and back, the melt layers of the sealant layers having the top sheet portion and the back sheet portion formed on the inner surface are heated and melted. The side seal portions are formed at a predetermined pitch in the conveying direction. Thereby, the bag part divided | segmented by the predetermined pitch between adjacent side seal parts is formed. At this time, the top sheet portion and the back sheet portion are heated and pressed while leaving the respective upper belt-like areas, so that the upper belt-like areas are not welded to each other, and the bag portion is formed by the upper belt-like area. It becomes the aspect connected with the conveyance direction.

Next, when it is conveyed to the slit forming station, a horizontal cut is formed in the upper strip area from the upper part of each side seal part. Thereby, since the said side seal part and an upper strip | belt-shaped area are cut away, the upper strip | belt-shaped areas of the said surface sheet part and a back surface sheet part can be separated easily, without receiving the influence of the said side seal part.
Subsequently, at the opening station on the downstream side, the upper belt-like area on the upper part of the bag portion is guided in a direction away from each other while being conveyed, thereby the bag portion (side seal) connected to the lower part of the upper belt-like area. It is possible to make a state in which the object to be packaged can be filled between each other), that is, in a state in which the upper end opening of the bag portion is opened to a size capable of filling the object to be packaged.

  Because of such a configuration, pinches (24a) (24b) for holding both side portions of independent packaging bags (161) separately as in the conventional example of FIG. 16 and suction heads (23a) (23b) for opening In addition, it is not necessary to provide a movable part such as the transfer device described above, and the structure can be simplified, so that the size of the entire device can be reduced. Moreover, since there are few said movable parts and movable mechanisms, generation | occurrence | production of a failure is also reduced.

  Further, as in the conventional example of FIG. 16, each packaging bag (161) is not configured to be sucked and opened by the suction heads (23a) and (23b) separately, but by continuously separating the upper belt-like area, The bag part is opened. Therefore, it is not necessary to perform many adjustment operations such as the pitch adjustment of each set of the suction heads (23a) and (23b) as in the conventional example, so the adjustment operation for changing the size of the package (A) to be manufactured is performed. Convenient.

  The bag part opened at the opening station is closed by filling a part to be packaged at the filling station and then welding the part corresponding to the inlet of the bag part at the final sealing station. Thereby, the package (A) connected in the conveyance direction by the upper belt-like area is formed. And in a parting station, the said package (A) and the said upper strip | belt-shaped area are cut off, and each package (A) with which the to-be-packaged goods were filled is obtained. Thus, the packaging operation by the packaging device is completed.

(2) The technical means of the invention according to claim 2 is as follows: “The slit forming station has a function of vertically cutting each side seal portion from the lower end to the upper end to further form a vertical cut that leads to the horizontal cut. It is characterized by that.
According to this, in the slit forming station, a longitudinal cut is formed that vertically cuts the side seal portion from the lower end to the upper end. As a result, the bag portions connected by the upper belt-like area are separated from each other over a certain range from the lower end, so that each bag portion expands in the thickness direction independently when filling the package. It becomes easy to do. Moreover, the bag part continuous body connected by the said upper strip | belt-shaped area is hard to be distorted, and can fill the to-be-packaged item smoothly in the said bag part.
The horizontal cut and the vertical cut may be formed at the same place in the conveyance path of the long sheet (1) at the same time, or separately at places shifted forward and backward in the conveyance direction. There may be. That is, in the slit forming station, even if the horizontal cut and the vertical cut are formed simultaneously in one section provided in the transfer path, the slit forming station is set in the two sections provided back and forth in the transfer direction. A configuration in which the cut and the vertical cut are formed separately may be employed. The same applies to the inventions according to claims 5 and 8 described later.

(3) The technical means of the invention according to claim 3 is as follows: “The folding station has a function of continuously folding the continuously supplied long sheet (1),
The side seal station includes a rotary seal device that forms the side seal portions at a predetermined pitch while continuously rotating in the transport direction.
The slit forming station comprises a rotary die cutter that forms the horizontal cut and the vertical cut while continuously rotating in the transport direction,
The final sealing station includes a rotary type sealing device that rotates while heating and pressing the front side sheet portion and the back side sheet portion in a lump in a lump state,
The cutting station includes a cutter that cuts the vertical notches so as to cross the transport direction ”.
According to this, the package (A) can be continuously manufactured at a high speed by adopting a rotary type sealing device, a rotary type die cutter, or the like.

(4) The technical means of the invention according to claim 4 is: “Heating the overlapping portion of these lower sides from the front and back in a state where the long surface sheet portion and the back sheet portion conveyed in the longitudinal direction are overlapped. A bottom seal station that forms a bottom seal portion by welding with an inner sealant layer by pinching;
The top sheet portion and the back sheet portion that are in an overlapped state are heated and pressed from the front and back, leaving both upper belt-like areas along the upper side of these, and the inner sealant layers are welded together to form a side seal portion. A side seal station to
A slit forming station for forming in each upper strip area a transverse cut extending in the longitudinal direction of the upper strip area from the upper portion of each side seal portion that is sequentially formed in the side seal station;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A filling station that fills a bag part between a pair of side seal parts from between the upper belt-like areas separated from each other at the opening station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the entrances of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
And a cutting station for cutting off the package (A) sequentially supplied to the downstream side of the final sealing station.
According to the present invention, in claim 1 described above, a part that is configured to form a top sheet part and a back sheet part where the lower sides are connected by folding one long sheet (1) in the width direction is separated and independent. The top sheet portion and the back sheet portion where the bottom sides are connected are formed by heat-pressing and welding the bottom sides of the two long sheets.

According to this, the bottom in which the bottom sides of the top sheet portion and the back sheet portion are welded to each other by heating and pressing the bottom sides of the long top sheet portion and the back sheet portion superimposed on the front and back at the bottom station A seal portion is formed.
Thereafter, as in the invention according to claim 1 described above, the side seal station, the slit forming station, the opening station, the filling station, the final seal station, and the dividing station are conveyed in this order, and the packaging operation proceeds in the same manner. An individual package (A) filled with an article to be packaged is obtained.

Therefore, since the structure of the opening station is simplified as in the first aspect of the invention, the entire packaging apparatus can be reduced in size and the occurrence of failure can be reduced. Furthermore, the adjustment work accompanying the size change of the package (A) to be manufactured is simpler than that of the conventional example.
In addition, the lower sides of the top sheet portion and the back sheet portion are welded directly through the third sheet (bottom sheet portion) interposed between the two, as described above. What is included is included in the concept of the present invention.

(5) The technical means of the invention according to claim 5 is the same as the invention according to claim 2, “The slit forming station longitudinally cuts each side seal portion from the lower end to the upper end, and further leads to the lateral cut. The apparatus is also provided with a function of forming a longitudinal cut ”, and operates in the same manner as the above-described second aspect.

(6) The technical means of the invention according to claim 6 is as follows: “The bottom seal station heats and presses the lower sides of the top sheet portion and the back sheet portion together from the front and back while continuously rotating in the transport direction. It has a rotary sealing device that forms the bottom seal part,
The side seal station includes a rotary seal device that forms the side seal portions at a predetermined pitch while continuously rotating in the transport direction.
The slit forming station comprises a rotary die cutter that forms the horizontal cut and the vertical cut while continuously rotating in the transport direction,
The final sealing station includes a rotary type sealing device that rotates while heating and pressing the front side sheet portion and the back side sheet portion in a lump in a lump state,
The cutting station includes a cutter that cuts the vertical cuts so as to cross the conveyance direction.
According to this, the package (A) can be continuously manufactured at a high speed by adopting a rotary type sealing device, a rotary type die cutter, or the like.

(7) The technical means of the invention according to claim 7 is as follows: “The cross-section V is reversed between the lower part of the long front sheet part and the back sheet part conveyed along the longitudinal direction so as to overlap at the downstream end. An insertion station for inserting a long bottom sheet portion folded in the width direction so as to form a letter,
In the state where the top sheet portion, bottom sheet portion, and back sheet portion are overlapped in this order, the top sheet portion and the top sheet portion are formed between the sealant layers on the inner surface by heating and pressing from the front and back, leaving the upper strip area along the upper side. A heat seal station that forms a heat seal portion composed of a side seal portion to which a back sheet portion is welded, and a bottom seal portion to which the bottom sheet portion and the top sheet portion or the back sheet portion are welded;
A slit forming station that forms a transverse cut extending in the longitudinal direction of the upper belt-like area from the upper part of each side seal portion that is sequentially formed in the heat-seal station, in both upper belt-like areas;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the entrances of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
And a cutting station for cutting off the package (A) sequentially supplied to the downstream side of the final sealing station.
According to the present invention, in claim 1 described above, a part that is configured to form a top sheet part and a back sheet part where the lower sides are connected by folding one long sheet (1) in the width direction is separated and independent. By inserting and welding the third long sheet in a folded state between the lower parts of the two long sheets, a bag part having a flat bottom surface part is formed.

  According to this, after inserting the long bottom sheet portion folded in an inverted V shape at the insertion station between the top sheet portion and the back sheet portion, the top sheet portion superimposed at the heat seal station, When the bottom sheet part and the back sheet part are heated and pressed from the front and back, the side seal part in which the top sheet part and the back sheet part are welded in the transport direction by heat melting of the sealant layers formed on the inner surface, A U-shaped heat seal portion is formed which includes the bottom sheet portion and the bottom sheet portion in which the top sheet portion or the back sheet portion is welded in such a manner that the lower ends of the side seal portions are connected to each other. Thereby, the bottomed bag part in which a planar bottom face part is formed by forming the bottom face sheet part is formed. At this time, as in the first aspect, since the top sheet portion and the back sheet portion are heated and pressed while leaving the respective upper belt-like areas, the bag portions are connected in the transport direction by the upper belt-like areas. It becomes the mode made.

Thereafter, in the same manner as in the invention according to claim 1 described above, the packaging material is conveyed in the order of the slit forming station, the opening station, the filling station, the final sealing station, and the dividing station, and the packaging operation proceeds in the same manner. A filled self-supporting individual package (A) is obtained.
Therefore, since the structure of the opening station is simplified as in the first aspect of the invention, the entire packaging apparatus can be reduced in size and the occurrence of failure can be reduced. Furthermore, the adjustment work accompanying the size change of the package (A) to be manufactured is simpler than that of the conventional example.

(8) The technical means of the invention according to claim 8 is the same as the invention according to claim 2, “The slit forming station vertically cuts each side seal portion from the lower end to the upper end, and further into the transverse cut. It is also provided with a function of forming a connected vertical cut ”, and operates in the same manner as in the second aspect.

(9) The technical means of the invention according to claim 9 is as follows: "The slit forming station is a corner portion between the lower side of the top sheet portion and the back sheet portion and the vertical cut, and a corner between the vertical cut and the horizontal cut. Has the function of forming the part into an arc,
The cutting station cuts the top sheet portion and the back sheet portion along a virtual straight line that is in contact with the arc-shaped corner portions of the vertical and horizontal cuts from above.
According to this, each corner part of the completed package (A) is shape | molded in the shape curved in circular arc shape. As a result, the sharp edge of the corner portion hits the hand of the person handling the packaging body (A), giving it an unpleasant feeling such as pain or scratching, or breaking through other packaging bodies (A). Does not happen. Further, since the arc-shaped corner portion is formed at the same time as the vertical cut and the horizontal cut, it is not necessary to separately remove the sharp edge of the corner portion after the package (A) is completed.

(10) The technical means of the invention according to claim 10 is as follows: "The opening station is a pair of parallel first and second guide rails extending in the transport direction between the transport areas of the upper belt-like areas. When,
A first sheet support conveyor that includes a support pin group or a support needle group that penetrates from the outer surface side to the one upper belt-shaped area that is conveyed while being in contact with the outer surface of the first guide rail, and that travels in the conveying direction; ,
A second sheet support conveyor that includes a support pin group or a support needle group that penetrates from the outer surface side to the other upper belt-shaped area that is conveyed while being in contact with the outer surface of the second guide rail, and that travels in the conveying direction. It is characterized by comprising "
According to this, in the opening station, the inner surfaces of both upper belt-like areas are transported in contact with the outer surfaces of the first and second guide rails, and are separated from each other by the widening between the first and second guide rails. Guided to. At this time, since the separated upper belt-like area is supported by the outer surfaces of the first and second guide rails, the upper edge of the upper belt-like area is twisted or inclined toward the inner surface side, etc. The distance between the upper belt-like areas is not partially reduced, and the distance between the first and second guide rails is always maintained.
Thereby, the to-be-packaged object can be smoothly filled in the bag portion that is pulled by the upper belt-like area and opened to the front and back.
Further, since the upper belt-like area is supported by a support pin group or a support needle group provided on the first and second sheet support conveyors, the first and second guide rails are caused by an impact at the time of filling the package. There is little fear that the bag part continuous body will fall off from the part.

(11) The technical means of the invention according to claim 11 is as follows: "The opening station is disposed along the transport direction on the outer surface side of the upper strip area in the transport area of the upper strip area. 1, a second guide rail,
First and second traveling members that travel in the transport direction along the first and second guide rails;
The first and second travel members are attached to the first and second traveling members at predetermined intervals, and include first and second clamping tools that sandwich an upper end edge of the upper belt-shaped area in the transport region of the upper belt-shaped area. And
Here, the conveyance area of the upper belt-shaped area indicates a range from the upstream end of the opening station to the package (A) being cut off at the dividing station.

  According to this, when it is conveyed to the opening station, the upper edge of the upper belt-like area is held by the first and second holding tools. When the first and second holding tools travel in the transport direction along the guide rail, the upper belt-like areas held by the first and second holding tools are guided in directions away from each other. At this time, similarly to the above-mentioned claim 10, since the upper end portion of the bag portion connected to the lower side of the upper belt-shaped area is pulled by the upper belt-shaped area and opened on the front and back, the separated upper belt-shaped The packaged items can be filled into the bag portion from between the areas.

In the structure using the support pin group or the support needle in the upper belt-like area as in the above-mentioned claim 10, the possibility that the support pin or the support needle is dropped and mixed into the package is denied. However, in this configuration, there is no such concern, and the object to be packaged having a larger weight than that of the support pin or the support needle can be stably supported.
In addition, since the first and second guide rails are arranged outside the upper belt-like area, the first and second guide rails do not interfere with the filling operation of the package, and are manufactured. It is easy to change and adjust the distance between the first and second guide rails and the rail shape in accordance with the size change of the package (A) to be done and the change of the package.

(12) The technical means of the invention according to claim 12 is: "The first and second traveling members are chain members that travel along the first and second guide rails;
The first and second clamping tools press the outer side of the upper edge of the upper belt-like area outward and the sheet support portion that contacts the outer surface of the upper edge of the upper belt-like area in the transport region of the upper belt-like area. An openable and closable sheet clamping part comprising a sheet pressing part that sandwiches and clamps the upper belt-like area between the sheet support part and
The sheet pressing portion is moved in a direction away from the sheet support portion at the upstream end and the downstream end of the conveyance area of the upper belt-shaped area to temporarily open the sheet holding portion, and the upstream end and the downstream end An opening / closing mechanism that always keeps the sheet clamping portion closed except for the end ”.
According to this, when the upper and lower belt-like areas are sandwiched by temporarily opening and closing the sheet sandwiching portion upstream of the opening station that is the upstream end, the sheet sandwiching portion extends in the front-back direction along the first and second guide rails. After being separated from each other, the package body (A), which is connected downward at the dividing station through the filling station and the final sealing station, is kept closed until it is cut off. And in the downstream of the cutting station where the packaging body (A) which is the downstream end is cut off, the clamping of the upper belt-like area is released by temporarily reopening the sheet clamping portion, and individual packaging bodies ( A) is obtained.

  In this configuration, since the sheet support portion is fixed and only the sheet pressing portion moves to open and close the sheet clamping portion, the structure of the opening / closing mechanism is simple. In addition, since the sheet support portion is disposed so as to contact the outer surface of the upper band-shaped area, the upper band-shaped area is excessively pulled in the separation direction when it is nipped by the sheet nipping section, and is extended or damaged. There is no worry to do.

(13) The technical means of the invention according to claim 13 is characterized in that “the first holding tool and the second holding tool alternately hold the upper belt-like area along the transport direction”.
According to this, when the upper belt-shaped area is sandwiched, or when the upper belt-shaped area is brought close to the overlapped state again from the separated state after the package is filled, the first and second clamping devices are used. And will not abut. Further, the number of the first and second holding tools can be reduced as compared with a configuration in which the first holding tool and the second holding tool hold the upper belt-like area at the same position.

The present invention has the following specific effects.
According to the first, fourth, and seventh aspects of the invention, the upper belt-like areas above the bag portion are guided in the opening station so as to be separated from each other, and the upper end opening of the bag portion is large enough to be filled with an article to be packaged. Since it can be in an open state, a pinch (24a) (24b) for holding independent packaging bags as in the conventional example shown in FIG. 16 and a suction head (23a) (23b) for opening, Since many movable parts such as a transfer device are unnecessary, the structure is simplified and the entire packaging device can be downsized. In addition, since the number of moving parts is small, the occurrence of failure can be reduced.
Furthermore, it is not necessary to perform adjustment work for many parts in accordance with the size change of the package (A) to be manufactured as in the conventional example, and the adjustment work is simple. It can easily cope with the size change.

  According to the invention which concerns on Claim 2, 5 and 8, each bag part is independently thickness at the time of filling of a to-be-packaged product by forming the longitudinal cut which cuts a side seal part from the lower end to the upper end. It becomes easy to expand in the direction, and the bag part continuous body connected by the upper belt-like area is not easily distorted, so that the bag part can be smoothly filled with an object to be packaged.

  According to the invention which concerns on Claim 3 and 6, a package (A) can be continuously manufactured at high speed by employ | adopting a rotary apparatus.

  In the invention which concerns on Claim 9, the inconvenience that the sharp edge of a corner part gives unpleasant feeling or pierces another package (A) does not occur. In addition, it is not necessary to perform a separate operation after the package (A) is completed, and it is not time-consuming.

  In the invention which concerns on Claim 10, the distance between the said upper strip | belt-shaped areas is made into the distance between said 1st, 2nd guide rails by guiding an upper strip | belt-shaped area in a separation direction by the 1st, 2nd guide rail. Since it can be maintained, the mercy package can be smoothly filled in the bag portion. In addition, since the upper belt-like area is supported by the support pin group or the support needle group, there is little fear that the bag portion continuous body will drop off due to an impact during filling of the package.

In the invention according to claim 11, there is no fear that the upper belt-like area is mixed into the support pin or the support needle package as in the configuration using the support pin group or the support needle. In addition, it is possible to stably support a packaged object having a large weight.
In addition, since the first and second guide rails are arranged on the outside, the first and second guide rails do not interfere with the filling operation of the package, and the package (A) to be manufactured It is easy to change and adjust the first and second guide rails according to the size change and the change of the package.

  In the invention which concerns on Claim 12, since the sheet | seat support part is fixed and the said sheet | seat clamping part is opened and closed by the movement of the said sheet | seat press part, the structure of an opening / closing mechanism is simple. In addition, there is no fear that the upper belt-like area is excessively pulled in the separating direction during the clamping, and is extended or damaged.

  In the invention which concerns on Claim 13, while a 1st clamping tool and a 2nd clamping tool do not contact | abut, the said 1st clamping tool and a 2nd clamping tool clamp the said upper strip | belt-shaped area in the same position. In comparison, the number of the first and second holding tools can be reduced.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
<Embodiment 1>
FIG. 1 is a perspective view of a main part of a packaging device according to an embodiment of the present invention.
The long sheet (1) used in this packaging apparatus is a laminate sheet in which a sealant layer is formed on the surface that becomes the inner surface on the folded side, which will be described later.
This has a folding station (4) that folds the long sheet (1) in half in the width direction on the downstream side in the sheet conveyance direction with respect to the film roll (L), and a half-folded long length. A side seal station (2) that forms side seal portions (11) at a predetermined pitch in the conveying direction with respect to the sheet (1), and a bottom seal by heating and pressing the folded edge of the long sheet (1) from the front and back A bottom seal station (28) for forming a portion (13), and a slit forming station (5) for forming a bag portion (16) by forming a T-shaped slit (14) along the side seal portion (11). An opening station (6) for opening the bag portion (16) by separating the upper edge of the long sheet (1), and a filling station (7) for filling the bag portion (16) with an article to be packaged. A final sealing station (8) for sealing the upper end of the bag portion (16) to form a package (A), and the package (A) Cutting station (9) and are sequentially disposed from an upstream side to cut out.
The long sheet (1) is conveyed intermittently in units of the width of the package (A) to be manufactured.

Below, the detail of the packaging apparatus of this example is demonstrated.
[Folding station (4)]
The folding station (4) includes a delta guide (41), a guide roller (42) horizontally disposed so as to approach the lower surface of the delta guide (41), and a downstream side of the delta guide (41). It is composed of a pair of sheet palm rollers (44) arranged adjacent to each other, and the long sheet (1) passes through the sheet palm rollers (44) in a half-folded state.
The delta guide (41) is formed of an isosceles triangular flat plate, and the delta guide (41) is inclined so as to gradually become lower from the bottom side toward the apex on the downstream side.

  Thus, when the long sheet (1) fed out from the film roll (L) is sent to the sheet separation roller (44) from between the delta guide (41) and the guide roller (42), the long sheet ( The central portion in the width direction of 1) is pushed downward at the apex of the delta guide (41) so that the upper belt-like areas (17) and (18) along both sides of the long sheet (1) overlap each other. It is half-folded in the width direction. Therefore, the long sheet (1) supplied to the downstream side from the sheet separation roller (44) is in a state where the top sheet part (1a) and the back sheet part (1b) connected at the lower end overlap each other.

[Side seal station (2)]
The side seal station (2) includes a side seal machine (21) that heat-clamps the top sheet part (1a) and the back sheet part (1b) in an overlapped state from the front and back sides, and the side seal machine (21 ) Is composed of a pair of heater blocks (21a) and (21b) that move toward and away from each other in the front and back direction.
The heater blocks (21a) and (21b) are formed from the lower side of the top sheet area (1a) and the back sheet section (1b), which are folded edges (19) of the half-folded long sheet (1), from the upper strip area ( 17) The region up to the lower side of (18) is heated and pressed.

As a result, when the top sheet portion (1a) and the back sheet portion (1b) in an overlapped state are heated and pressed from the front and back with the heater blocks (21a) and (21b), they are formed on the inner surface of the pressed portion. The sealant layers are welded to each other, and as shown in FIG. 2 (a), the side seal portion (11) is formed in the vertical direction while leaving the upper belt-like areas (17) and (18) having a predetermined width along the conveying direction. It is formed.
The side seal portion (11) formed at a predetermined pitch in the conveyance direction in the side seal station (4), and the folded edge (19) of the long sheet (1) at the bottom station (28) described later. The space surrounded by the bottom seal portion is the bag portion (16) that fills the package.

[Bottom seal station (28)]
The bottom station (28) is located on the downstream side of the side seal station (2) and includes a pair of heater blocks (28a) and (28b) that heat and clamp the folded edge (19) of the long sheet (1). The heat sealing machine (280) is provided. The heater blocks (28a) and (28b) are connected to and separated from each other in the front and back direction in the same manner as the heater blocks (21a) and (21b) of the side seal station (2) described above, thereby continuously connecting the folded edges (19). It is heated and pinched.
Thus, when the folded edge (19) of the long sheet (1) is heated and pressed from the front and back by the heater blocks (28a) and (28b), as shown in FIG. A bottom seal portion (13) continuous in the transport direction along 19) is formed.

In this example, the bottom seal portion (13) is formed on the appearance of the manufactured package (A) because it is intended to improve the design feeling by finishing it in a four-side seal state. It is not necessary to form the bottom seal portion (13). Even when the bottom seal is not performed, the folded edge (19) becomes the bottom edge portion to form the bag portion (16) that can be filled with the package.
Further, in this example, a pair of feed rollers (29) for feeding the long sheet (1) in the conveying direction is disposed downstream of the bottom seal station (28).

[Slit forming station (5)]
The slit forming station (5) is provided on the downstream side of the feed roller (29), and a female die (51) and a male die (52 ).
Therefore, when the side seal portion (11) of the long sheet (1) is sandwiched and punched between the female die (51) and the male die (52), as shown in FIG. A vertical cut (14a) that vertically cuts from the lower end to reach the upper end, and a horizontal cut (14b) that continues to the upper end of the vertical cut (14a) and extends along the longitudinal direction of the upper strip area (17) (18). ) To form a T-shaped slit (14).
As a result, the bag portion (16) formed adjacent to each other in the transport direction via the side seal portion (11) is separated from the bottom portion over a certain range and separated from each other. When filling the bag portion (16) with an article to be packaged in (7), the bag portion (16) is easily expanded in the thickness direction, and the filling operation is performed as compared with the case where the vertical cut (14a) is not formed. Can be done smoothly.

  In this example, at the same time as the formation of the T-shaped slit (14), as shown in FIG. 2 (C), a corner between the bottom seal portion (13) and the vertical cuts (14a) (14a) is formed. The parts (16a) (16b) and the corner parts (16c) (16d) of the vertical cuts (14a) (14a) and the horizontal cuts (14b) (14b) are formed in an arc shape. Therefore, no sharp edges are formed at the outer corner of the package (A), and there is no discomfort such as hurting the skin or hurting the skin when it is held by hand. There is no inconvenience that the package (A) is damaged by the edge.

Furthermore, in this example, an opening notch (10) is formed on the side portion of the bag portion (16) simultaneously with the formation of the T-shaped slit (14).
Due to the formation of the lateral cuts (14b) and (14b), the bag part (16) and the upper belt-like area (17) and (18) are separated at both sides of the bag part (16), and the bag part ( 16) is connected only at the central portion, and when the upper belt-like areas (17) and (18) are separated from each other, the side seal portions (11) are not easily affected. Therefore, the upper belt-like areas (17) and (18) can be easily separated from each other, and the central portion of the bag portion (16) connected to the upper belt-like areas (17) and (18) can be greatly opened. This makes it easier to fill the bag portion (16) with the article to be packaged than in the case where the transverse cut (14b) is not formed.
In particular, in this example, since the horizontal cut (14b) and the upper end of the vertical cut (14a) are continuous, that is, formed as a T-shaped slit (14), the upper strip area (17 ) (18), the adjacent bag portions (16) connected to each other are highly independent, and the bag portion (16) continuous body is smoothly conveyed without being twisted or distorted.

[Opening station (6), filling station (7)]
As shown in FIGS. 1 and 3, the opening station (6) is located on the downstream side of the slit forming station (5), and gathers at the upstream end and the downstream end in the transport direction and the upstream side. A pair of first and second guide rails (61a) and (61b) which are separated from each other in the central region between the end and the downstream end, and outer surfaces of the first and second guide rails (61a) and (61b) The first and second sheet support conveyors (64a) and (64b) are provided.

On the outer surfaces of the first and second guide rails (61a) and (61b) are the inner surfaces of the upper belt-like areas (17) and (18) located at the upper ends of the top sheet portion (1a) and the back sheet portion (1b). Each is in contact. Therefore, the upper belt-like areas (17) and (18) are transported to the downstream side while sliding along the outer surfaces of the first and second guide rails (61a) and (61b). The first and second guide rails 61a and 61b are guided in directions away from each other.
Further, on the outer surface of the first and second guide rails (61a) (61b), narrow grooves (62a) (62b) for receiving support needles (63) to be described later are formed continuously along the longitudinal direction. Has been.

  The first and second sheet support conveyors (64a) and (64b) are driven rollers (65a and 65b) provided near the upstream ends of the first and second guide rails (61a) and (61b), and are divided as will be described later. Drive roller (66a) (66b) provided near the entrance of the product discharge conveyor (97) disposed in the downstream area of the station (9), the driven roller (65a) (65b) and the drive roller (66a) The drive rollers 66a and 66b are driven by a servo motor (not shown). The conveyor belt is attracted to each other in a direction approaching each other by a pair of guide rollers (67) on the downstream side of the first and second guide rails (61a) and (61b).

On the outer peripheral surfaces of the first and second sheet support conveyors (64a) and (64b), support needles that penetrate the upper belt-like areas (17) and (18) of the top sheet portion (1a) and the back sheet portion (1b) ( 63) are planted, and the support needles (63) enter the narrow grooves (62a) (62b) formed on the outer surfaces of the first and second guide rails (61a) (61b). It penetrates through the top sheet portion (1a) and the back sheet portion (1b). Here, a large number of support pins may be implanted instead of the support needle (63).
Thus, when the drive rollers (66a) and (66b) are driven, the upper belt-like areas (17) and (18) supported by the support needles (63) implanted in the conveyor belt in a stabbed state are downstream. The first and second guide rails 61a and 61b are separated from each other. At this time, as shown in FIG. 4, the central part of the bag part (16) connected to the lower side of the upper belt-like areas (17) and (18) is largely separated, and the filling port (160) Becomes open.

The filling station (7) is provided at a position where the filling port (160) of the bag portion (16) is largely opened by the opening station (6), and is located above the opened filling port (160). The bag portion (16) is filled with an article to be packaged (F) such as curry or sweets through a hopper (70) disposed in the box.
At this time, the weight of the bag portion (16) will increase due to the filling of the article to be packaged (F), but the upper belt-like area (17) (18) has a large number of support needles ( 63), and the bag (16) continuous body does not fall off from the first and second guide rails (61a) and (61b) due to the weight of the article to be packaged (F).

Since it is such a structure, according to the packaging apparatus of this example, if it conveys to the said opening station (6), the said bag part (16) will be carried out by the said 1st, 2nd guide rail (61a) (61b). The upper belt-like areas (17) and (18) connected to each other above are separated from each other. At this time, since the filling port (160) of the bag part (16) is opened by being pulled by the upper belt-like area (17) (18), it is easily packaged in the bag part from the filling port (160). The product (F) can be filled.
Therefore, as in the conventional example of FIG. 16, to open the pinches (24a) and (24b) for holding both side portions of the individual packaging bags (161) separately and the filling port (160) of the packaging bag (161). Since there is no need to dispose a large number of movable parts such as a transfer device such as the suction heads (23a) and (23b), the structure can be simplified and the packaging device can be downsized. In addition, the occurrence of failures is reduced due to the small number of moving parts.
Further, when the size of the package pair (A) to be manufactured is changed by opening the filling port (160) of the bag portion (16) by the first and second guide rails (61a) (61b), Since there are few parts that need to be adjusted as in the conventional example and the adjustment work can be easily performed, it is possible to easily cope with the size change of the package (A).

[Final seal station (8)]
The final sealing station (8) is provided on the downstream side of the filling station (7), and is an upper end opening of a bag portion (16) filled with a predetermined packaged article in the filling station (7). A heat sealing machine (80) including a pair of heater blocks (8a) and (8b) for heating and pressing the filling port (160) from the front and back is provided. The heater blocks (8a) and (8b) are heated and pressed by moving toward and away from each other in the same manner as the heater blocks (21a and 21b) of the side seal station (2) described above.
Therefore, when the portion corresponding to the filling port (160) of the bag portion (16) is heated and clamped from the front and back by the heater blocks (8a) and (8b), as shown in FIG. Part (100) is formed. As a result, the bag portion (16) is in a four-sided sealed state, and a package (A) in which an object to be packaged is packaged with the long sheet (1) is completed.
At this time, the package (A) is connected to the upper belt-like areas (17) and (18) through the top seal part (100).

[Division station (9)]
The cutting station (9) is located downstream of the final seal station (8), and as shown in FIG. 5, the cutting station (9a) (9b) includes a pair of rotating blades (9a) (9b) whose outer peripheral portions overlap each other. Equipped with a machine. The rotary blades (9a) and (9b) are connected to the drive shaft (69) of the first and second sheet support conveyors (64a) and (64b) by the transmission belt (V1) and rotate synchronously.
On the downstream side of the cutting station (9), pulling rollers (92a) (92b) for pulling the package (A) separated from the upper belt-like areas (17) (18) by the cutting machine are arranged. It is installed. The pulling rollers (92a) and (92b) are connected to the drive shaft (69) of the first and second sheet support conveyors (64a) and (64b) by the transmission belt (V2) and rotate synchronously.

The feeding speed of the package (A) by the pulling rollers (92a) and (92b) is the same as the feeding speed of the bag portion (16) by the first and second sheet support conveyors (64a) and (64b). Thus, dimensions such as the drive shaft (69) of the first and second sheet support conveyors (64a) and (64b) and the central rotation shaft of the pulling rollers (92a) and (92b) are set.
Thus, the rotary blades (9a) (9b) and the pulling rollers (92a) (92b) are synchronized with the drive rollers (66a) (66b) of the first and second sheet support conveyors (64a) (64b). When rotated, as shown in FIG. 2 (d), the package (A) is cut into vertical cuts (14a) and horizontal cuts (14a) of the bag portions (16) by the rotary blades (9a) and (9b). Cut along the imaginary straight line (C) contacting the corners (16c) and (16d) of 14b from above, and the package (A) is taken out to the product discharge conveyor (97).
The cutting position by the rotary blades (9a) and (9b) is set within the range of the vertical width of the top seal portion (100).

<Embodiment 2>
FIG. 8 shows a packaging device configured to form a top sheet portion (1a) and a back sheet portion (1b) by heating and pressing two independent long sheets in a stacked state. .
This is the same as that described above after the two long sheets (1) fed from the separate film rolls (L1) and (L2) are superposed by a pair of sheet-grip rollers (44). In the same manner as in the first aspect, the bag portion (16) is formed by heat-pressing and welding the top sheet (1a) and the back sheet portion (1b) at the side seal station (2) and the bottom station (28). It is formed. Further, in this example, in place of the folding station (4), two long sheets (1) are superposed to form a top sheet part (1a) and a back sheet part (1b). Is the same as that of the first embodiment.

Therefore, after the bag portion (16) is formed in the bottom seal station (28), the slit forming station (5), the opening station (6), the filling station (7), and the final sealing station (8) in order. , The package (A) is conveyed to the dividing station, and the packaged product (A) is packed with the long sheet (1) at the downstream end.
In such a configuration, the top sheet portion (1a) and the back sheet portion (1b) compared to a configuration in which one long sheet (1) is half-folded in the folding station (4). And the top sheet edge (1a) and the back sheet sheet (1b) are not easily misaligned with each other.

<Embodiment 3>
In FIG. 11, a third long sort (1) is inserted between two independent long sheets (1) in a folded state, and a top sheet portion (1a), a back sheet portion (1b), A packaging device for producing a package (A) having a planar bottom surface portion by forming a bottom sheet portion (1c) is shown.
This is between the lower part of the top sheet part (1a) and the back sheet part (1b) consisting of two long sheets (1) fed out from different film rolls (L1) (L2). Furthermore, an insertion station (40) for folding and inserting a bottom sheet (1c) consisting of a long sheet (1) fed out from another film roll (L3) into an inverted V shape, and a top sheet in an overlapped state (1a), a bottom sheet part (1c), a back sheet part (1b) are heated and sandwiched from the front and back, and a heat seal part comprising a side seal part (11) and a bottom seal part (13) at a predetermined pitch in the conveying direction ( 12) forming a heat seal station (200), forming a slit (14) along the heat seal portion (12) and forming a bag portion (16) (5), and the elongate An opening station (6) for opening the bag portion (16) by separating the upper edge of the sheet (1), and covering the bag portion (16). A filling station (7) for filling the packaging, a final sealing station (8) for sealing the upper end of the bag part (16) to form a package (A), and a cutting for cutting out the package (A) Station (9).
The points other than the insertion station (40), the heat seal station (200), and the opening station are the same as those in the first embodiment including the use of a laminate sheet as the long sheet (1). ing.

Hereinafter, each part having a configuration different from that of the first embodiment will be described.
[Insertion station (40)]
The insertion station (40) is composed of a delta guide (41) composed of a flat plate having an isosceles triangle shape, and two sets of sheet palm rollers (410) (44) disposed on the downstream side of the delta guide (41). The bottom sheet portion (1c) made up of the third long sheet (1) is half-folded in the upstream sheet-grip roller (410), and the downstream sheet-grip roller (44) The top sheet portion (1a), the back sheet portion (1b), and the bottom sheet portion (1c), which are two long sheets, are overlapped with each other.

As a result, when the third long sheet (1) is conveyed to the delta guide (41), as shown in FIG. 11, the central portion in the width direction is located above the apex of the delta guide (41). And is half-folded in the width direction so that both side edges overlap. Then, after the folding edge (19) is folded in an inverted V shape with the sheet folding roller (410) on the upper side, it is inserted between the lower portions of the top sheet portion (1a) and the back sheet portion (1b). Then, in the palm roller (44), the top sheet portion (1a), the bottom sheet portion (1c), and the back sheet portion (1b) are overlapped in this order.
Further, in this example, the two long sheets (1) that are fed from the film rolls (L1) and (L2) and form the top sheet portion (1a) and the back sheet portion (1b) have the same sheet width. However, the third long sheet (1) that is fed from the film roll (L3) and forms the bottom sheet portion (1c) is more than the other two long sheets (1). Also, a sheet having a small sheet width is used.

[Heat seal station (200)]
The heat seal station (200) includes a side seal machine (210) that heats and presses the top sheet portion (1a), bottom sheet portion (1c), and back sheet portion (1b) in an overlapped state from the front and back. The side sealing machine (21) is composed of a pair of heater blocks (210a) and (210b) that move toward and away from each other in the front and back direction.
The heater block (21a) (21b) includes the top sheet portion (1a), the bottom sheet portion (1c), and the bottom sheet portion (1b) from the bottom end portion of the top sheet portion (1a) and the back sheet portion (1b). The region up to the lower side of the upper belt-like areas (17) and (18) formed at the upper end of each is heated and pressed.

  As a result, the top sheet part (1a), bottom sheet part (1c), and back sheet part (1b) in an overlapped state were heated and sandwiched from the front and back by the heater blocks (210a) (210b), and were sandwiched. As shown in FIG. 11, a pair of sealant layers formed on the inner surfaces of the portions are welded and extend in the vertical direction while leaving the upper belt-like areas (17) and (18) having a predetermined width along the conveying direction. A U-shaped heat seal part (12) comprising a side seal part (11) and a bottom seal part (13) connecting the lower end parts of the side seal part (11) in an arch shape is formed. The space surrounded by the heat seal part (12) becomes the bag part (16) that fills the package.

The bottom seal portion (13) includes the bottom sheet portion (1c), and a folded edge (19) of the bottom sheet portion (1c) and the top sheet portion (1a) and the back sheet portion (1b). It is heat-sealed so as to have a substantially boat bottom shape in which the bottom surface portion is lowered toward the center from the left and right joining points to be welded.
Therefore, in the opening station (6) to be described later, when the filling port (160) of the bag portion (16) is opened, the bottom sheet portion (1a) and the back sheet portion (1b) are pulled by the top sheet portion (1a). Since 1c) is spread in a flat shape and the lower portion of the bag portion (16) is spread in a skirt shape, a large space for filling the packaged items can be secured.

[Opening station (6)]
The opening station (6) is located on the downstream side of the slit forming station (5) as shown in FIGS. 11, 12, and 15, and first and second clamping tools (3a) to be described later. (3b) the upper belt-like area (17) and the guide plate (30) that separates the upper belt-like areas (17) and (18) so as to be easily clamped, gather at the upstream end and the downstream end in the transport direction, and between the upstream end and the downstream end A pair of first and second guide rails (31a) and (31b) that are separated from each other in the central region between them, and a traveling member that travels along the first and second guide rails (31a) and (31b) The first and second chains (34a) and (34b), the driven rollers (35a) and (35b) and the driving rollers (36a and 36b) around which the first and second first and second chains are wound. And upper belt-like areas (17) of the top sheet portion (1a) and the back sheet portion (1b) which are attached to the lower surfaces of the first and second chains (34a) (34b) at a predetermined interval. The first and second holding tools (3a) and (3b) that hold the upper edge of 18).

As shown in FIG. 12, the first and second guide rails (31a) and (31b) have a plurality of plate-like rail components (311a) to (316a), (311b) to (316b) having different shapes. By sequentially arranging them in the transport direction, the travel paths (Wa) (Wb) of the first and second chains that match the size of the package (A) to be manufactured are formed.
In this example, since the first and second guide rails (31a) and (31b) are arranged above the bag portion (16) to be conveyed, As shown in FIG. 12, the rail members (312a) and (312b) to be arranged can be filled with an article to be packaged from the hopper (70) to the bag portion (16) at the filling station (7). It is open.

  The first and second chains (34a) and (34b) are constructed by connecting a plurality of link plates (340a) and (340b) in the traveling direction by shaft pins (341a) and (341b), and the opening station (7) Driven rollers (35a) (35b) provided in the vicinity of the upstream end of the product, and driving rollers (36a) provided in the vicinity of the inlet of the product discharge conveyor (97) provided in the downstream area of the dividing station (9) (36b). The drive rollers (36a) and (36b) are driven by a servo motor (not shown).

  Below the first and second chains (34a) and (34b), the first and second belts sandwich the upper belt-like areas (17) and (18) of the long top sheet portion (1a) and back sheet portion (1b). The clamps (3a) (3b) are attached at predetermined intervals, and travel along the first and second travel paths (Wa) (Wb) together with the first and second chains (34a) (34b). However, it is moved in the front and back direction of the bag portion (16).

  As shown in FIGS. 13 and 14, the first and second holding tools (3a) and (3b) are linked plates (340a) and (340b) constituting the first and second chains (34a) and (34b). A rectangular parallelepiped main body case (38a) (38b) in which a pair of mounting holes (380a) (380b) for inserting and fixing shaft pins (341a) (341b) extending downward from the lower surface of Flat sheet support portions (32a) and (32b) which are provided at the front end of the case (38a) and come into contact with the upper ends of the upper belt-like areas (17) and (18) of the bag portion (16) from the outer surface, and the upper belt-like A sheet clamping part comprising a sheet pressing part (33a) (33b) that presses the area (17) (18) from the inner surface to the outer side and presses against the sheet support part (32a) (32b) to be held; An opening / closing mechanism that opens and closes the sheet clamping unit.

  The opening / closing mechanism includes a rotation shaft (37a) (37b) attached to the main body case (38a) (38b) in parallel with the traveling direction of the first and second chains (34a) (34b), and the rotation Connecting plates (330a) and (330b) connected to the upper surface of the shafts (37a) and (37b) and connected to the sheet pressing portions (33a) and (33b) in an L-shaped section, and the rotating shaft (37a) ( 37b) projecting plates (370a) and (370b) projecting in the circumferential direction from the lower surface portion, and the sheet pressing portions (33a) and (33b) and rear end portions of the main body case (38a and 38b), respectively. The end portion of the sheet is attached, and the sheet pressing portion (33a) (33b) is configured by a spring (39a) (39b) that always urges the sheet supporting portion (32a) (32b) to be pressed against the sheet supporting portion (32a) (32b). In the natural state, the sheet holding portion is maintained in a closed state.

As shown in FIGS. 13 and 15, the springs (39a) and (39b) are arranged on the side edges of the sheet pressing plates (33a) and (33b) and the rear side edges of the main body cases (38a) and (38b). It is attached between the attachment portions (390a) and (390b) provided in the.
In this example, the opening and closing of the sheet clamping unit is performed by the driven rollers (35a) and (35b) upstream of the opening station (7) and the driving roller (36a) downstream of the dividing station (9). ) (36b). The driven rollers (35a) (35b) and the driving rollers (36a) (36b) are below the chain holding plates (350a) (350b) around which the first and second chains (34a) (34b) are wound. As shown in FIG. 14, projecting plates (370a) and (370b) provided on the first and second holding tools (3a) and (3b) are made to act against the biasing force of the springs (39a) and (39b). On the other hand, circular cam plates (351a) (351b) are provided which are pushed back from the outside in the front and back direction of the bag portion (16).

  As a result, the first and second clamping tools (35a) and (35b) that have been transported together with the first and second chains (34a) and (34b) in a state where the sheet clamping unit is closed ( As shown in FIG. 14, 3a) and 3b) are such that the sheet holding portion is opened by pushing back the cam plates (351a) and 351b, and the driven rollers (35a) and (35b) are moved in that state. Go around. When the sheet support portions (32a) and (32b) come close to the position where the sheet support portions (32a) and (32b) come into contact with the outer surface of the bag portion (16), the sheet pressing portions (33a) and (33b) become upper belt-like areas (17) and (18). ) To enter the inside of the bag portion (16), the push back of the cam plate (315a) (315b) is released and at the same time the upper belt-like area (17) (18) from the inside The sheet pressing portions (32a) and (32b) are pressed, that is, the sheet holding portion is closed, and the upper belt-like areas (17) and (18) are firmly held.

Similarly, when the first and second clamping tools (3a) and (3b) are conveyed to the drive rollers (36a) and (36b), the sheet clamping unit is moved back by pushing back the cam plates (351a and 351b). The bag portion (16), which is in an open state and released from being pinched by the sheet pinching portion, is dropped and collected and transported by the product discharge conveyor (97). After that, the sheet clamping portion is closed again when the cam plates (315a) (315b) are released from being pushed back by rotating around the drive rollers (36a) (36b), and the first and second chains ( 34a) and 34b are again moved upstream of the opening station (7).
Here, the rotation angle of the open coaxial (37a) (37b) by the cam plate (351a) (351b) is such that the tip of the sheet pressing portion (33a) (33b) is the upper belt-like area (17) ( The angle is set so that the upper end edge of 18) can be crossed and the bag portion (16) can enter from the outside to the inside.

  Since it is such a structure, according to the packaging device of this example, the first and second holding tools (3a) (3b) attached to the first and second chains (34a) (34b) The upper belt-like areas (17) and (18) connected to the upper part of the bag part (16) are sandwiched, and according to the traveling paths (Wa) and (Wb) of the first and second guide rails (31a) and (31b), Be separated. At this time, as in the first embodiment, the filling port (160) of the bag portion (16) is opened by being pulled by the upper belt-like areas (17) and (18). ), The bag portion can be easily filled with the article to be packaged (F).

  Therefore, as in the conventional example, a pinch (24a) (24b) that sandwiches both sides of the packaging bag (161) separately, a suction head (23a) (23b) for opening the packaging bag (161), etc. Since no transfer device or movable parts are required, the structure is simplified and the packaging device can be downsized. In addition, since there are few parts that need to be adjusted as in the conventional example, and the adjustment work can be easily performed, it is possible to easily cope with the size change of the package (A).

  In this example, the sheet pressing portions (33a) operated by the seat support portions (32a) (32b) fixed to the main body cases (38a) (38b) and the rotation shafts (37a) (37b). ) (33b) constitutes the sheet clamping portion, and only the sheet pressing portions (33a) and (33b) are movable parts, so that the structure is simple. Therefore, there are fewer failures compared to the configuration in which both the sheet support portions (32a) (32b) and the sheet pressing portions (33a) (33b) operate, and the upper belt-like areas (17), (18) are surely secured. Can be held between.

In addition, as shown in FIG. 11, the first holding tool (3a) and the second holding tool (3b) alternately hold the upper belt-like areas (17) and (18) along the transport direction. The mounting position has been adjusted. Therefore, even when the upper belt-like areas (17) and (18) are close to each other at the upstream end and the downstream portion, there is no fear that the first holding tool (3a) and the second holding tool (3b) come into contact with each other. The number of the first and second holding tools (3a) and (3b) is less than that of the configuration in which the first holding tool (3a) and the second holding tool (3b) are mounted at symmetrical positions. can do.
After filling the article to be packaged (F) from the filling port (160) of the bag part (16) opened at the opening station (7), as in the first embodiment, the final sealing station (8 ), A standing pouch type packaging body (A) that is conveyed to the cutting station and is wrapped with the long sheet (1) at the downstream end is obtained.

[Other]
The packaging device according to the present invention is not limited to the embodiment described above.
In the above-described embodiment, the top sheet part (1a) and the back sheet part (1b) or the top sheet part (1a), the bottom sheet part (1c), and the back sheet part (1b) in an overlapped state are used as the heater. Female molds that move toward and away from each other in the front and back direction after forming the side seal part (11) and the bottom seal part (13) by heating and pressing with blocks (21a) (21b) (210a) (210b) ( 51) and a male mold (52) form a T-shaped slit (14) to form the bag portion (16).

  However, as shown in FIG. 6, the side seal station (2) has a rotary unit composed of a pair of heating and pressure rollers that form the side seal portion (11) at a predetermined pitch while continuously rotating in the transport direction. Similarly, the bottom seal station (28) has a bottom side of the top sheet portion (1a), the back sheet portion (1b), and the bottom sheet portion (1c). It is good also as a structure provided with the rotary-type sealing apparatus which heat-presses while rotating a part.

  Further, as shown in FIG. 7, the slit forming station (5) may include a rotary die cutter that forms the T-shaped slit (14) while continuously rotating in the transport direction. The station (8) may include a rotary seal device that heats and compresses a portion corresponding to the filling port (160) of the bag portion (16) sequentially supplied from the filling station (7). Good.

  When each of the above-described configurations is adopted, the rotary seal device (21 ′) has a rotating cylinder (201) in which heater blocks (21a) and (21a) are arranged on the outer periphery as shown in FIG. And a rotating cylinder (202) having heater blocks (21b) and (21b) that cooperate with the heater blocks (21a) and (21a) on the outer periphery. Further, as shown in FIG. 7, the rotary die cutter includes a cylindrical body (52 ′) having a T-shaped punching blade (a) for forming the T-shaped slit (14) on the outer periphery, and the T-shaped cutter. An anvil cylinder (511) that receives the punching blade (a).

Further, in the final sealing station (8), the top sheet part (1a) and the back sheet part (1b) in an overlapped state were finally sealed by a rotary type sealing device composed of a pair of heating and pressure rollers. Thereafter, in the cutting station (9), the vertical cut (14a) is cut in the transport direction by the rotary blades (9a) and (9b).
With such a configuration, there is no device that performs the contact / separation operation in the surface direction, so there is no need to intermittently feed out the long sheet (1). Therefore, since the long sheet (1) can be continuously supplied from the film rolls (L1), (L2), and (L3) to wrap the package, the package (A) can be continuously high-speed. Can be produced.

In the embodiment described above, the upper end portion of the bag portion (16) is heat-sealed by heating clamping pressure, but along the upper belt-like areas (17) and (18) of the bag portion (16). An openable / closable package (A) can be produced by welding a male fastener tape and a female fastener tape having a heat-welding resin property to the region.
In the first or second embodiment described above, a large number of support needles (63) implanted on the outer surface of the sheet support conveyor (64a) (64b) are formed by the sharp edges of the upper belt-like areas (17), (18). The bag part (16) is pierced and supported by breaking through the sheet, but on the upstream side of the opening station (6), a small pitch is provided in advance along the longitudinal direction of the upper belt-like areas (17) and (18). A punching device for forming a hole is provided, and in the opening station (6), the support needle (63) or a support pin that is an alternative to the support needle (63) is inserted into the small hole, and the bag portion (16 ) May be supported.

In the above-described embodiment, the upper belt-like areas (17) and (18) are supported by the support needle (63) or the first and second holding tools (3a) and (3b). (1a) and other support members such as suction cups that adsorb the outer surface of the back sheet portion (1b) are attached to the first and second sheet support conveyors (64a) (64b) and the first and second chains, and the bag portion (16) may be supported.
By variously changing the shape and range of each seal portion such as the side seal portion (11), bottom seal portion, top seal portion, and the shape of the slit formed in the slit forming station (5), various A package (A) having the following contour shape can be formed.

  Further, as shown in FIG. 10, on the upstream side of the rotary blades (9a) and (9b) provided in the cutting station (9), nip belt rollers (98a) and (98b), and the nip belt rollers A nip belt (99a) (99b) that is wound around the drive roller (66a) (66b) (36a) (36b) is attached to the nip belt (99a). The package (A) completed by (99b) may be pulled over the product discharge conveyor (97).

It is a schematic perspective view of the whole packaging apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the processing order of a package (A). It is sectional drawing of the arrangement | positioning part of a filling station (7). It is a schematic perspective view of the state which looked at the opening station (6) part from the upper part. It is a perspective view of the arrangement | positioning part vicinity of a cutting station (9). It is explanatory drawing of the modification of a side seal station. It is explanatory drawing of the modification of a slit formation station. It is a schematic perspective view of the whole packaging apparatus which concerns on Embodiment 2 of this invention. It is explanatory drawing in the case of couple | bonding indirectly the lower side part of a surface sheet part (1a) and a back surface sheet part (1b) via a bottom sheet (110). It is a top view of the modification of a parting station (9) part. It is a schematic perspective view of the whole packaging apparatus which concerns on Embodiment 3 of this invention. It is the schematic which showed arrangement | positioning of the 1st, 2nd guide rail (31a) (31b) and the 1st, 2nd chain (34a) (34b) in the conveyance area of an upper strip | belt-shaped area. It is a top view which shows the 1st clamping tool of a closed state (3a). It is sectional drawing which shows the 1st clamping tool (3a) of an open state. It is sectional drawing of the arrangement | positioning part of a filling station (7). It is explanatory drawing of a prior art example.

Explanation of symbols

(1) ・ ・ ・ Long sheet
(1a) ・ ・ ・ Surface sheet
(1b) ・ ・ ・ Back sheet part
(1c) ... Bottom sheet
(11) ・ ・ ・ Side seal
(13) ... Bottom seal part
(16) ・ ・ ・ Bag part
(17) (18) ・ ・ ・ Upper strip area
(2) ・ ・ ・ Side seal station
(200) ... Heat seal station
(28) ・ ・ ・ Bottom seal station
(3a) ・ ・ ・ First clamp
(3b) ・ ・ ・ Second clamping device
(4) ・ ・ ・ Folding station
(5) ・ ・ ・ Slit forming station
(6) ・ ・ ・ Opening station
(7) ・ ・ ・ Filling station
(8) ... Final seal station
(9) ・ ・ ・ Severing station
(A) ・ ・ ・ Package

Claims (13)

A folding station that forms a front sheet portion and a back sheet portion in which the lower sides are connected by folding the long sheet (1) conveyed in the longitudinal direction in the width direction;
The top sheet portion and the back sheet portion that are in an overlapped state are heated and pressed from the front and back, leaving both upper belt-like areas along the upper side of these, and the inner sealant layers are welded together to form a side seal portion. A side seal station to
A slit forming station for forming in each upper strip area a transverse cut extending in the longitudinal direction of the upper strip area from the upper portion of each side seal portion that is sequentially formed in the side seal station;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A filling station that fills a bag part between a pair of side seal parts from between the upper belt-like areas separated from each other at the opening station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the entrances of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
A packaging apparatus comprising: a cutting station that cuts the package (A) sequentially supplied to the downstream side of the final seal station. The packaging device according to claim 1,
The slit forming station is also provided with a function of longitudinally cutting each side seal portion from the lower end to the upper end to form a vertical cut that leads to the horizontal cut. The packaging device according to claim 1,
The folding station has a function of continuously folding the long sheet (1) continuously supplied,
The side seal station includes a rotary seal device that forms the side seal portions at a predetermined pitch while continuously rotating in the transport direction.
The slit forming station comprises a rotary die cutter that forms the horizontal cut and the vertical cut while continuously rotating in the transport direction,
The final sealing station includes a rotary type sealing device that rotates while heating and pressing the front side sheet portion and the back side sheet portion in a lump in a lump state,
The said cutting station is equipped with the cutter which cut | disconnects each said vertical cut so that it may cross in the said conveyance direction, The packaging apparatus characterized by the above-mentioned. In the state where the long front sheet part and the back sheet part conveyed in the longitudinal direction are overlapped, the bottom overlapped part is heated and pressed from the front and back to the bottom seal to be welded with the inner sealant layer. A bottom seal station forming part,
The top sheet portion and the back sheet portion that are in an overlapped state are heated and pressed from the front and back, leaving both upper belt-like areas along the upper side of these, and the inner sealant layers are welded together to form a side seal portion. A side seal station to
A slit forming station for forming in each upper strip area a transverse cut extending in the longitudinal direction of the upper strip area from the upper portion of each side seal portion that is sequentially formed in the side seal station;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A filling station that fills a bag part between a pair of side seal parts from between the upper belt-like areas separated from each other at the opening station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the entrances of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
A packaging apparatus comprising: a cutting station that cuts the package (A) sequentially supplied to the downstream side of the final seal station. The packaging device according to claim 4,
The slit forming station is also provided with a function of longitudinally cutting each side seal portion from the lower end to the upper end to form a vertical cut that leads to the horizontal cut. The packaging device according to claim 5,
The bottom seal station comprises a rotary type sealing device that forms the bottom seal part by heating and pressing the lower side of the top sheet part and the back sheet part together from the front and back while continuously rotating in the transport direction,
The side seal station includes a rotary seal device that forms the side seal portions at a predetermined pitch while continuously rotating in the transport direction.
The slit forming station comprises a rotary die cutter that forms the horizontal cut and the vertical cut while continuously rotating in the transport direction,
The final sealing station includes a rotary type sealing device that rotates while heating and pressing the front side sheet portion and the back side sheet portion in a lump in a lump state,
The said cutting station is equipped with the cutter which cut | disconnects each said vertical cut so that it may cross in the said conveyance direction, The packaging apparatus characterized by the above-mentioned. A long shape folded in the width direction so as to have an inverted V-shaped cross section between the lower part of the long surface sheet part and the back sheet part conveyed along the longitudinal direction so as to overlap at the downstream end An insertion station for inserting the bottom sheet portion,
In the state where the top sheet portion, bottom sheet portion, and back sheet portion are stacked in this order, the top sheet portion and the top sheet portion are formed between inner surface sealant layers by heating and pressing from the front and back, leaving the upper strip area along the upper side. A heat seal station that forms a heat seal portion composed of a side seal portion to which a back sheet portion is welded, and a bottom seal portion to which the bottom sheet portion and the top sheet portion or the back sheet portion are welded;
A slit forming station that forms a transverse cut extending in the longitudinal direction of the upper belt-like area from the upper part of each side seal portion that is sequentially formed in the heat-seal station, in both upper belt-like areas;
An opening station that guides the upper belt-like areas to be transported away from each other on the downstream side of the slit forming station;
A package that is connected in the transport direction in the upper belt-like area by welding portions corresponding to the inlets of the bag portions in the top sheet portion and the back sheet portion with the sealant layers on the inner surface after filling the packaged material. A final sealing station forming (A);
A packaging apparatus comprising: a cutting station that cuts the package (A) sequentially supplied to the downstream side of the final seal station. The packaging device according to claim 7,
The slit forming station also has a function of longitudinally cutting the heat seal portion from the lower end to the upper end to form a vertical cut that leads to the horizontal cut. In the packaging device according to any one of claims 2, 3, 5, 6 and 8,
The slit forming station has a function of forming a corner portion between the lower side of the top sheet portion and the back sheet portion and the vertical cut, and a corner portion of the vertical cut and the horizontal cut in an arc shape,
The said cutting station cut | disconnects the said surface sheet part and a back surface sheet part along the virtual straight line which contact | connects the said circular-shaped corner part of the said vertical cut and horizontal cut from upper direction. The packaging device according to any one of claims 1 to 9,
The opening station includes a pair of parallel first and second guide rails extending in the transport direction between the transport areas of the upper belt-like areas.
A first sheet support conveyor that includes a support pin group or a support needle group that penetrates from the outer surface side to the one upper belt-shaped area that is conveyed while being in contact with the outer surface of the first guide rail, and that travels in the conveying direction; ,
A second sheet support conveyor that includes a support pin group or a support needle group that penetrates from the outer surface side to the other upper belt-shaped area that is conveyed while being in contact with the outer surface of the second guide rail, and that travels in the conveying direction. A packaging apparatus comprising: The packaging device according to any one of claims 1 to 9,
The opening station includes a pair of first and second guide rails disposed along the transport direction on the outer surface side of the upper belt area in the transport area of the upper belt area,
First and second traveling members that travel in the transport direction along the first and second guide rails;
The first and second travel members are attached to the first and second traveling members at predetermined intervals, and include first and second clamping tools that sandwich an upper end edge of the upper belt-shaped area in the transport region of the upper belt-shaped area. Packaging equipment to do. The packaging device according to claim 11,
The first and second traveling members are chain members that travel along the first and second guide rails,
The first and second clamping tools press the outer side of the upper edge of the upper belt-like area outward and the sheet support portion that contacts the outer surface of the upper edge of the upper belt-like area in the transport region of the upper belt-like area. An openable and closable sheet clamping part comprising a sheet pressing part that sandwiches and clamps the upper belt-like area between the sheet support part and
The sheet pressing portion is moved in a direction away from the sheet support portion at the upstream end and the downstream end of the conveyance area of the upper belt-shaped area to temporarily open the sheet holding portion, and the upstream end and the downstream end A packaging apparatus comprising: an opening / closing mechanism that always maintains the sheet holding portion in a closed state except at the end. The packaging device according to claim 11 or 12,
The packaging apparatus, wherein the first holding tool and the second holding tool alternately hold the upper belt-like area along the transport direction.

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