JP2011162258A - Seal resin film winding apparatus for container with lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal resin film winding apparatus for a container having a lid that enables a thin seal resin film winding to be carried out so as to allow its manufacturing cost to be reduced and its working efficiency to be improved. <P>SOLUTION: There are provided transferring means 10 for performing an intermittent forwarding operation of a container 2 having a lid thereon while its position is being set, film melting-cutting and adhering means 20 having a heat melting-cutting blade and heat-melting adhering surfaces on both sides, a first forwarding-reversing mechanism 30 for forwarding or reversing the film melting-cutting and adhering means 20 at a crossing direction in its transferring direction, pinch rolls for holding and setting a film 6, film holding-setting and tension-applying means 40 having tension applying rolls for use in applying tension to the film, a second forwarding-reversing mechanism 50 for forwarding or reversing the film-holding and tension-applying means 40 at a crossing direction in its transferring direction, a pair of feeding-out reels 60 for feeding out the film 6 from the film winding body, and a direction changing system 70 for guiding the fed-out film 6 to the film holding-setting and tension-applying means 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sealing resin film winding device for a lidded container, and more specifically, a lid of a lidded container on which a lid is fitted and an outer periphery of a container body upper end, or a lid is fitted inside. The present invention relates to a sealing resin film winding device around a lidded container for winding a sealing resin film around an outer periphery of a container main body upper end of a lidded container.

  Conventionally, a shrink lid having a shape having a top plate portion and a skirt portion hanging from the periphery of the top plate portion is formed by a resin heat-shrinkable sheet, and the shrink lid is put on a container having a flange portion at the periphery of the opening. After that, a technique has been proposed in which the skirt portion is thermally shrunk and wound around the lower portion of the flange portion (Patent Document 1).

  The shrink lid described in Patent Document 1 is applied to the heat-shrinkable sheet made of resin by pressure forming, vacuum forming, press forming, or the like so that the skirt portion is suspended from the periphery of the top plate portion. It is obtained by punching along the contour shape.

  On the other hand, there is a form in which the product is displayed and sold at a storefront in a state in which a lid is simply put on the upper end opening of a container body in which food such as miso is enclosed. In such a sales form, it has an advantage for the purchaser that it is possible to check the product inside by opening the lid, but on the other hand, the product is covered with foreign matter by the malicious intention of a third party. There is a risk. Therefore, a stepped cylindrical seal base is formed by the pressure forming, vacuum forming, press forming, or the like, and the seal base is fitted on the outer periphery of the upper end of the container body of the lidded container, and the seal is formed by an appropriate heating means. By heating and shrinking the base body to a predetermined temperature, it is displayed and sold at the storefront in a sealing state in which it is in close contact with the outer peripheral surface and outer peripheral surface of the lid and the outer peripheral surface of the container body near the lid. If there is, the purchaser checks whether the sealing is broken, and if the sealing is not broken, the food product such as miso enclosed in the container body is not contaminated and safe. It can be said that it can be judged and purchased with confidence.

  That is, as shown in FIG. 27, a stepped cylindrical seal base 100 is formed from a relatively thick, for example, single layer or multilayer resin film having a thickness of 40 μm to 60 μm, and then, as shown in FIG. A container main body 101 having an upper end 101a and a lid 102 that is externally fitted to the upper end of the container main body 101 and detachably closes the opening 101a. (Not shown) is prepared, and a lid-made container 103 made of resin is prepared. After the sealing base 100 is fitted onto the lid-like container 103 from above and temporarily fixed, the sealing base 100 is attached by an appropriate heating means. By heating to about 100 ° C. to about 190 ° C., as shown in FIG. 29, the seal base 100 is thermally shrunk so that the upper surface peripheral portion and the outer peripheral surface of the lid 102 and the vicinity of the lid 102 in the container body 101 Adhere closely to the outer peripheral surface.

JP 2002-337898 A

  However, in the sealing of a lidded container to which the technique described in Patent Document 1 is applied, first, a molding process such as pressure forming, vacuum forming, or press forming for forming the stepped cylindrical seal base 100 is required. In addition, since the seal base 100 itself is relatively thick, the manufacturing cost increases due to high material costs per sealing. Moreover, since the fitting process which covers the said sealing base | substrate 100 appropriately from the top of the container 103 with a lid | cover by manual work or automation is required, work efficiency is bad. Moreover, since the relatively thick seal base 100 has a large heat capacity, the temperature drop rate after being heated to a predetermined temperature (about 100 ° C. to about 190 ° C.) and thermally contracted is low. Accordingly, the heating temperature of the sealing base 100 may affect the lidded container 103, causing the lid 102 or the sealed portion of the container main body 101 to be thermally deformed. At times, there is a problem that it is difficult to attach and detach the lid 102 to the container body 101.

  The present invention solves such a problem, and the object of the present invention is to reduce the manufacturing cost, improve the work efficiency, and avoid the thermal influence on the lidded container. An object of the present invention is to provide an apparatus for winding a sealing resin film onto a lidded container capable of winding the sealing resin film.

In order to achieve the above object, a sealing resin film winding device for a container with a lid according to the present invention includes a container main body provided with an opening at the upper end and the upper end of the container main body so as to fit the opening. A transporting means for positioning a container with a lid having a lid that detachably closes at a predetermined height with a predetermined interval, and intermittently advancing along a transport reference line in a transport direction by a predetermined movement amount; ,
It is arranged corresponding to a height region that intersects the conveying direction of the conveying means and includes the upper end portion of the container with lid and the upper side of the upper end surface, and is orthogonal to the virtual horizontal plane including the conveying reference line. A sandwiching part that sandwiches a virtual elevation surface that rises from both sides at a predetermined position, the sandwiching part having a thermal cutting blade at the center in the transport direction, and upstream and downstream in the transport direction of the thermal cutting blade A sealing resin film fusing and fusing means having heat fusing surfaces adjacent to both sides, and
The sealing resin film fusing and fusing means are advanced to each other, and the sealing resin film is fused by the abutment of the hot fusing blades, and the sealing resin film is fused by the close contact of the heat fusing surfaces. And a first advancing / retreating mechanism for retreating the sealing resin film fusing and fusing means away from each other with a gap allowing the passage of the lidded container,
The sealing resin film fusing and fusing means approaches either the upstream side or both the upstream side and the downstream side in the transport direction and intersects the transport direction, and the upper end and the upper end surface of the lidded container A pinch roll which is arranged corresponding to a height region including the vicinity of the upper side of the sheet and advances in the crossing direction of the conveying direction to sandwich the sealing resin film with the virtual elevation face interposed therebetween, and the same height as the pinch roll A sealing resin film sandwiching / tensioning means provided with at least a pair of tension applying rolls arranged to cross the conveying direction corresponding to the thickness region and apply tension to the sealing resin film;
The sealing resin film sandwiching / tensioning means are moved forward to sandwich the sealing resin film with a pinch roll, and the tensioning roll applies tension to the sealing resin film, and the sealing resin film sandwiching A second advancing / retreating mechanism that retracts the tension applying means from each other and separates the pinch roll and the tension applying roll with an interval that allows passage of the lidded container;
The tip fusion part of a pair of sealing resin films fused on the heat fusion surface adjacent to the downstream side in the conveyance direction of the thermal cutting blade is positioned on the virtual elevation surface, and the tip fusion part is the conveyance means. As a result, the pair of sealing resin films continuous to the tip fusion part are fed out with tension applied from the pair of feeding reels as they are pressed against the lidded container that intermittently advances by a predetermined amount of movement. A direction changing system for guiding the pair of sealing resin films to the sealing resin film sandwiching / tensioning means;
A driving source for the conveying means for intermittently driving the conveying means with a predetermined amount of movement, a driving source for the sealing resin film fusing and fusing means for advancing / retreating the first advancing / retracting mechanism, and a seal for advancing / retreating the second advancing / retreating mechanism Control means for electrically controlling the driving of the drive source of the resin film clamping / tensioning means based on a set control program;
It is characterized by comprising.

  According to this, first, the sealing resin film fusion / melting means is moved backward by the first advancing / retracting mechanism, and the sandwiching portion is separated by an interval allowing passage of the lidded container. Thus, the sealing resin film sandwiching / tension applying means is moved backward from each other, and the pinch roll and the tension applying roll are separated from each other with an interval allowing passage of the lidded container, and wait. In this standby state, when the container with the lid is advanced by a predetermined amount of movement by the conveying means, the tip fusion part of the pair of sealing resin films is pressed in the conveying direction by the tip of the upper end of the container with the lid. Accordingly, the pair of sealing resin films are fed from the pair of feeding reels while being applied with tension.

  When the forward movement of the lidded container reaches a predetermined amount, the lidded container stops at a predetermined position. At this time, the pair of sealing resin films are wound around the front half of the upper end of the lidded container in a state where tension is applied. Here, the sealing resin film sandwiching and tension applying means are advanced by the second advancing / retracting mechanism, and the pair of sealing resin films are sandwiched by the pair of pinch rolls.

  In this case, in the configuration in which the sealing resin film sandwiching / tensioning means is arranged upstream of the sealing resin film fusing / fusing means in the transport direction of the lidded container, the pair of sealing resin films has a lid. In the state where tension is applied from the front half of the upper end of the container toward the pair of pinch rolls, the distance between the opposing spaces is reduced. At the same time, when the sealing resin film fusing and fusing means are moved forward by the first advancing / retracting mechanism to bring the sandwiching portions closer to each other, the pair of sealing resin films are formed between the front half and the rear half of the upper end of the lidded container. The pair of sealing resin films between the boundary and the pair of pinch rolls are sandwiched between the boundary and the pair of pinch rolls, and the pair of sealing resin films between the boundary and the boundary are in a state of being elastically stretched by applying a stronger tension. .

  The pair of sealing resin films sandwiched by the sandwiching portions are melted by the thermal fusing blade at the center position in the transport direction, and the both sides of the center position in the transport direction are melted by the close contact of the heat-sealing surfaces. Worn. Here, the first and second advancing / retracting mechanisms cause the sealing resin film fusion / melting means and the sealing resin film clamping / tensioning means to retreat from each other.

  Thereby, the approach of the heat fusion surfaces on both the upstream and downstream sides in the transport direction is released, and the rear end fusion part fused by the heat fusion surface on the downstream side in the transport direction is the rear end fusion part. Displacement to the rear end position of the lidded container by elastic recovery of the pair of sealing resin films between the boundary and the entire circumference of the upper end portion of the lidded container and the upper side of the upper end surface of the lidded container. It is wound around. Further, when the sealing resin film sandwiching / tension applying means are moved backward, the end fusion part fused by the heat fusion surface upstream in the transport direction is located above the upper end part and the upper end face of the lidded container. It stands by corresponding to the height region including the vicinity and the virtual elevation surface. In the following, by repeating the above operation, the lidded container was wound with a pair of sealing resin films around the entire circumference of the upper end portion and the entire circumference near the upper side of the upper end surface of the lidded container. In the state, it is intermittently sent out by the conveying means.

  On the other hand, in the configuration in which the sealing resin film clamping / tension applying means is disposed close to both the upstream side and the downstream side in the conveying direction of the sealing resin film fusing / fusing unit, the first advancing / retracting mechanism causes the sealing to be performed. The resin film fusing and fusing means are retracted from each other, and the sandwiching portions are separated by an interval allowing passage of the lidded container. Retreat and wait for a distance that allows passage of the lidded container. In this standby state, when the container with the lid is advanced by a predetermined amount of movement by the conveying means, the tip fusion part of the pair of sealing resin films is pressed in the conveying direction by the tip of the upper end of the container with the lid. Accordingly, the pair of sealing resin films are fed from the pair of feeding reels while being applied with tension.

  When the forward movement of the lidded container reaches a predetermined amount, the lidded container stops at a predetermined position. At this time, the pair of sealing resin films are wound around the front half of the upper end of the lidded container in a state where tension is applied. Here, only the pinch rolls are moved forward to sandwich a pair of sealing resin films.

  As a result, the pair of sealing resin films are wound around the entire circumference of the upper end portion of the lidded container and the entire circumference in the vicinity of the upper side of the upper end surface of the lidded container. At the same time, the sandwiching portions of the sealing resin film fusing and fusing unit are moved forward to bring them closer to each other, and the tension applying rolls of the sealing resin film sandwiching and tension applying unit are moved forward.

  The pair of sealing resin films sandwiched by the sandwiching portions are melted by the thermal fusing blade at the center position in the transport direction, and the both sides of the center position in the transport direction are melted by the close contact of the heat-sealing surfaces. Worn. Here, the sandwiching portion of the sealing resin film fusion / melting means and the pinch roll and the tension imparting roll of the sealing resin film sandwiching / tension applying means are retracted from each other.

  Thereby, the approach of the heat fusion surfaces on both the upstream and downstream sides in the transport direction is released, and the rear end fusion part fused by the heat fusion surface on the downstream side in the transport direction is the rear end position of the lidded container. And is wound around the entire circumference of the upper end of the lidded container and the entire circumference in the vicinity of the upper side of the upper end surface of the lidded container. Further, the sealing resin film sandwiching / tension applying means retreats from each other, so that the front end fusion portion fused by the heat fusion surface on the upstream side in the conveying direction is located between the tension applying rolls and the upper end of the lidded container. It is positioned and waits corresponding to the height region including the vicinity of the upper side of the portion and the upper end surface and the virtual elevation surface. In the following, by repeating the above operation, the lidded container was wound with a pair of sealing resin films around the entire circumference of the upper end portion and the entire circumference near the upper side of the upper end surface of the lidded container. In the state, it is intermittently sent out by the conveying means.

  The sealing resin film winding device around the lidded container according to the present invention is wound on the downstream side of the conveying means corresponding to the height region including the upper end portion of the lidded container and the upper side of the upper end surface. It is desirable to provide a heating zone provided with downstream conveying means for conveying and discharging the sealing resin film while heating. According to this, a pair of sealing resin films are wound around the entire circumference of the upper end portion and the upper periphery of the upper end surface, and the lidded container sent out by the conveying means passes through the heating zone. Since the pair of sealing resin films can be heat-shrinked and the lidded container can be continuously sealed, the working efficiency is improved.

  In addition, it is desirable that both the conveying means and the downstream conveying means are constituted by a caterpillar type conveying means. Accordingly, the lidded container can be positioned and held at a predetermined interval and transported intermittently with a simple structure.

  According to the sealing resin film winding device for a container with a lid according to the present invention, the molding process for the sealing resin film is unnecessary, and the material cost per sealing is suppressed by using a thin sealing resin film. Manufacturing cost can be reduced. Moreover, since the covering process which covers the resin film for sealing on the lidded container is unnecessary, the work efficiency is improved. Further, since the thin sealing resin film has a small heat capacity, the temperature drop rate after being heated to a predetermined temperature and thermally contracted is high. Therefore, since the thermal influence on the lidded container of the heated sealing resin film is avoided, the sealed portion of the lid body and the container body is not thermally deformed, and the container body is used when the lidded container is used. The lid can be easily attached and detached.

It is a front view which shows one Embodiment of the resin film winding apparatus for sealing to the container with a lid concerning this invention. It is a top view of FIG. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG. It is a right view of FIG. It is the GG sectional view taken on the line of FIG. It is an enlarged front view which shows one Embodiment of a conveyance means. FIG. 10 is a plan view of FIG. 9. FIG. 5 is an enlarged view of a sealing resin film fusing and fusing unit of FIG. 4. It is. It is an expanded HH arrow line view of FIG. FIG. 4 is an enlarged view of the sealing resin film clamping / tension applying means of FIG. 3. FIG. 14 is a bottom view of FIG. 13. It is an enlarged view of one feeding reel in a pair of feeding reels. FIG. 16 is a plan view of FIG. 15. It is a block diagram which shows one Embodiment of the electrical connection structure of a control means and each drive source. It is a schematic plan view which shows one Embodiment of the resin film fusing and melt | fusion 1st process for sealing. It is a schematic plan view which shows one Embodiment of the resin film fusing and fusion | melting 2nd process for sealing. It is a schematic plan view which shows one Embodiment of the resin film fusing and fusion | melting final process for a seal | sticker. It is a schematic plan view which shows other embodiment of the resin film fusing and melt | fusion 1st process for a seal | sticker. It is a schematic plan view which shows other embodiment of the resin film fusing and fusion | melting 2nd process for sealing. It is a schematic plan view which shows other embodiment of the resin film fusing and fusion | melting 3rd process for sealing. It is a schematic plan view which shows other embodiment of the resin film fusing and sealing | fusion final process for a seal | sticker. It is a schematic plan view which shows 2nd Embodiment of a conveyance means. It is a schematic plan view which shows further another embodiment of a conveyance means. It is explanatory drawing sectional drawing of the stepped cylindrical sealing base | substrate applied to sealing of the container with a lid | cover by the heat shrink of the conventional resin film. It is a longitudinal cross-sectional view of a state in which a sealing base is fitted onto a lidded container from above and temporarily fixed. It is a longitudinal cross-sectional view which shows sealing of the container with a lid | cover by the heat shrink of a sealing base | substrate.

  Hereinafter, the sealing resin film winding apparatus to the container with a lid concerning the present invention is explained based on a drawing. FIG. 1 is a front view showing an embodiment of a sealing resin film winding device on a lidded container according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. 4 is a cross-sectional view taken along line BB in FIG. 1, FIG. 5 is a cross-sectional view taken along line EE in FIG. 1, FIG. 6 is a cross-sectional view taken along line FF in FIG. 8 is a sectional view taken along the line GG of FIG. 7, FIG. 9 is an enlarged front view showing an embodiment of the conveying means, FIG. 10 is a plan view of FIG. 9, and FIG. 12 is an enlarged view taken along the line HH in FIG. 11, FIG. 13 is an enlarged view of the sealing resin film clamping / tensioning means in FIG. 3, FIG. 14 is a bottom view of FIG. Is an enlarged view of one feeding reel of a pair of feeding reels, FIG. 16 is a plan view of FIG. 15, and FIG. 17 is a block diagram showing an embodiment of an electrical connection structure between the control means and each drive source. Tsu is a click view.

  In these figures, a sealing resin film winding device (hereinafter referred to as a resin film winding device) 1 on a lidded container 1 includes a conveying means 10 and a split-structure sealing resin film fusing and fusing means. (Hereinafter referred to as film fusing / fusing means) 20, first advance / retreat mechanism 30, split resin resin film clamping / tensioning means (in the following description, film clamping / tensioning means) 40), a second advance / retreat mechanism 50, a pair of feeding reels 60, 60, a sealing resin film direction changing system 70, and a control means 80.

  As shown in FIGS. 1, 2, 4, 8, 9, and 10, the transport unit 10 positions the lidded container 2 at a predetermined height h with a predetermined interval l, This is for intermittent advancement along the conveyance reference line 11 extending in a straight line in the conveyance direction (arrow F1) by a predetermined movement amount l equal to the predetermined interval l. In this embodiment, the conveyance surface 10a is moved in the conveyance direction. A movable carriage 12 is provided at (arrow F), and the carriage 12 is intermittently advanced with a predetermined stroke equal to the movement amount l by a drive source 13 comprising, for example, a pusher mechanism, and a lidded container 2 is a state in which it is placed on a height adjustment plate 14 provided on the carriage 12, and the vicinity of the upper end thereof is detachably held by a pair of positioning sandwiching plates 15a and 15b from both the front and rear sides, thereby conveying the surface 10a. Has a predetermined height h above, or Center O is mounted on carriage 12 is positioned so as to be intermittently advanced along the conveying reference line 11 of the transfer means 10.

  The container 2 with a lid is formed of a single-layer or multi-layer sheet resin molded body, and has a substantially square projection plane shape in which four corners are formed in an arc shape, and a container body 2a having an open upper end, and the container body A lid 2b that is externally fitted to the upper end of 2a and detachably closes the opening is provided, and a food product (not shown) such as miso is enclosed inside the container body 2a.

  The film fusing / fusing means 20 is for heat-fusing a pair of sealing resin films, which will be described later, at predetermined positions, and for locally fusing both sides of the heat-fusing part. 2, 4, 11, and 12, a pair of sandwiching portions 21, 22 are disposed so as to be orthogonal to the transport direction of the transport means 10. Each sandwiching portion 21, 22 corresponds to a height region h <b> 1 (see FIG. 9) that includes the upper end portion of the container 2 with lid and a portion slightly above the upper end surface 2 c (see FIG. 9). The virtual elevation surface 4 (see FIG. 2 and FIG. 4) rising perpendicular to the virtual horizontal surface 3 (see FIG. 4) can be sandwiched opposite to each other at both predetermined positions. The sandwiching part 21 is provided with a thermal cutting blade 21a at the center in the transport direction (arrow F1), and the sandwiching part 22 is provided with a thermal cutting blade 22a at the center in the transport direction (arrow F1). The heat fusion surfaces 21b and 21c are adjacent to both sides of the upstream side in the conveyance direction and the downstream side in the conveyance direction, and the heat fusion surfaces are adjacent to both the upstream side in the conveyance direction and the downstream side in the conveyance direction of the thermal fusing blade 22a. 22b and 22c are provided. The thermal fusing blades 21a, 22a and the heat fusion surfaces 21b, 22b, 21c, 22c are heated by an electric heater (not shown) and are described later by a known temperature control means including a thermocouple (not shown). Is maintained at a set temperature (150 ° C. to 300 ° C.) suitable for fusing and fusing a pair of resin films for sealing

  The pair of sandwiching portions 21 and 22 is distributed to a pair of plate-like brackets 23 and 24, and is attached to the upstream surface of the lower end portion in the transport direction. 5 is attached to a pair of upper and lower guide rods 25 a and 25 b, which are installed on the upper and lower sides, through a plurality of linear bushes 26 so as to be able to advance and retreat perpendicularly to the conveying direction.

  The first advancing / retracting mechanism 30 includes a pair of screw rods 31 and 32 having different spiral winding directions, and a drive source 33 including an electric motor connected to one screw rod 32. The pair of screw rods 31 and 32 includes The base end portions of the plate-like brackets 23 and 24 on the upstream side in the conveying direction are rotatably supported by the apparatus frame 5 between the pair of upper and lower guide rods 25a and 25b, and the distal end portions are helical cups. They are connected to each other via a ring 34 so that they can rotate simultaneously, and a drive source 33 is connected to one screw rod 32. Therefore, by driving the drive source 33 in the forward direction, the pair of sandwiching portions 21 and 22 are advanced to each other, and the sealing resin film, which will be described later, is fused by thermal contact with the thermal fusing blades 21a and 22a. A sealing resin film, which will be described later, is fused by approaching the surfaces 21c, 21d, 22c, and 22d, and the pair of sandwiching portions 21 and 22 are retracted from each other by reverse driving of the drive source 33, thereby providing a container with a lid. The two can be separated by an interval allowing the passage of two.

  As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 13 and FIG. 14, the film clamping / tensioning means 40 approaches the upstream side in the transport direction (arrow F1) of the film fusing / fusion means 20 and A pair of pinch rolls 41 and 42 arranged perpendicular to the conveying direction and having a vertical axis, and a pair of hooked tension applying rolls 43 and 44 having a vertical axis are provided. The pinch rolls 41 and 42 and the tension applying rolls 43 and 44 with hooks correspond to a height region h1 (see FIG. 9) including the upper end portion of the lid-equipped container 2 and a portion slightly above the upper end surface 2c. Each of the pinch rolls 41 and 42 sandwiches a sealing resin film, which will be described later, with the virtual elevation surface 4 interposed therebetween, and each of the tension applying rolls 43, 44 applies tension to the sealing resin film described later. . Each of the pinch rolls 41 and 42 slightly protrudes toward the downstream side in the transport direction (arrow F1) than the hooked tension applying rolls 43 and 44.

  The pair of pinch rolls 41, the hooked tension applying roll 43, the pinch roll 42, and the hooked tension applying roll 44 are distributed to the pair of plate-like brackets 46, 47, and the lower end of the lower end portion in the transport direction Each of the plate-like brackets 46 and 47 is attached to a pair of upper and lower guide rods 48a and 48b installed on the apparatus frame 5 with a plurality of linear bushes 49. The second advancing / retracting mechanism 50 moves forward and backward. A shock plate 49a straddling the pair of upper and lower guide rods 48a and 48b is interposed between the plate-like brackets 46 and 47, and a rubber shock buffer stopper 49b corresponding to the shock plate 49a. Is attached to the pair of lower linear bushes 49, so that shocks when the plate-like brackets 46 and 47 are stopped at the front end position are buffered.

  The second advancing / retracting mechanism 50 is inserted in the pair of upper and lower guide rods 48 a and 48 b and makes the plate-like brackets 46 and 47 approach each other via a plurality of linear bushes 49, that is, each plate-like bracket 46. , 47 are urged in a direction to advance each other, and the plate-like brackets 46, 47 are separated from each other against the urging of each coil spring 51, that is, each plate-like bracket. A pair of drive sources 52 and 53, for example, air cylinders are provided to move 46 and 47 in a direction in which they are moved backward. Therefore, by the biasing of the plurality of coil springs 51, the pair of pinch rolls 41, 42 and the pair of hooked tension applying rolls 43, 44 are moved forward together with the plate-like brackets 46, 47, so that the pinch roll 41 , 42 sandwiches a sealing resin film, which will be described later, and applies tension to the sealing resin film, which will be described later, by a pair of hooked tension applying rolls 43, 44. The pair of pinch rolls 41 and 42 and the pair of hooked tension applying rolls 43 and 44 are moved backward together with the plate-like brackets 46 and 47 to allow the pinch rolls 41 and 42 to pass through the lidded container 2. They can be spaced apart.

  As shown in FIGS. 1, 2, 4, 4, 7, 8, 15, and 16, the pair of feeding reels 60, 60 includes the upper end of the lidded container 2 and the vicinity of the upper side of the upper end surface 2c. Thin sealing resin film winding bodies (hereinafter referred to as resin film winding bodies) 61A and 61B having a width dimension w corresponding to the height region h1 (see FIG. 9) 61A and 61B are rotatably held and fed out. For this purpose, a pair of support plates 63 that detachably support the central shaft 62 of each of the resin film rolls 61A and 61B and a lower end of the resin film winding bodies 61A and 61B swing on the pair of support plates 63 via the rotation shaft 64. An arm 65 supported in a movable manner and a resin film feed roll 66 are provided. The resin film feed roll 66 is rotatably attached to the upper end of the arm 65 and is mounted on the surface of the resin film rolls 61A and 61B. For seal In contact with the feed point of the fat film 6 serves to suppress and controls the feeding of the sealing resin film 6, each of the resin film wound body 61A, a spontaneous loosening or variation of 61B. As the sealing resin film 6, a thin single layer or multilayer resin film having a thickness of about 20 μ to 30 μ is applied.

  As shown in FIGS. 1, 2, 3, 4, and 6, the sealing resin film direction changing system 70 includes a pair of first direction changing rolls 71 </ b> A and 71 </ b> B and a pair of second direction changing rolls 72 </ b> A, 72B. One first direction changing roll 71A changes the feeding direction of the sealing resin film 6 drawn up from one resin film roll 61A to the horizontal direction toward the upstream side in the conveying direction (arrow F1). Therefore, it has a tilt axis of 45 degrees and is rotatably arranged on the apparatus frame 5, and one second direction changing roll 72A is fed out from one first direction changing roll 71A in the horizontal direction toward the upstream side. The sealing resin film 6 is rotatably attached to the apparatus frame 5 with a vertical axis so as to change the feeding direction of the sealing resin film 6 toward the one tension applying roll 43 with a flange.

  The other first direction changing roll 71B changes the feeding direction of the resin film 6 drawn up from the other resin film wound body 61B to the horizontal direction toward the upstream side in the transport direction (arrow F1). Therefore, it has a tilt axis of 45 degrees and is rotatably arranged on the apparatus frame 5, and the other second direction change roll 72B is fed out from the other first direction change roll 71B in the horizontal direction toward the upstream side. The sealing resin film 6 is rotatably attached to the apparatus frame 5 with a vertical axis so as to change the feeding direction of the sealing resin film 6 toward the other flanged tension applying roll 44 in the horizontal direction. And a pair of resin film 6 which changed direction with each 2nd direction change roll 72A, 72B and was drawn | fed out is a part of outer peripheral surface of each tension applying roll 43,44 and each pinch roll 41,42. It is wound around and the fusion | melting part mentioned later respond | corresponds to the said virtual standing surface 4 between the downstream end surfaces of the conveyance direction (arrow F1) of each pinch roll 41,42.

  1 and 17, the control means 80 is set to the drive source 13 of the transport means 10, the drive source 33 of the first advance / retreat mechanism 30, and the pair of drive sources 52, 53 of the second advance / retreat mechanism 50. An electric control signal is output based on the control program that is being controlled, and these drives are controlled.

  According to the sealing resin film winding apparatus 1 having the above-described configuration, the sandwiching portions 21 and 22 of the film fusion / melting means 20 are moved backward by the reverse drive of the drive source 33 of the first advancing / retracting mechanism 30. The sandwiching portions 21 and 22 are spaced apart from each other by an interval that allows passage of the lidded container 2, and driving of the drive sources 52 and 53 of the second advance / retreat mechanism 50 resists the bias of the coil spring 51. The wearing / tensioning means 40 is moved backward, and the pinch rolls 41 and 42 are separated from each other by an interval that allows the cover-equipped container 2 to pass. When the container 2 with the lid is advanced by the conveying means 10 in this standby state by a predetermined movement amount l, the distal end fusion portion (to be described later) of the pair of sealing resin films 6 is conveyed by the tip of the lid 2b of the container 2 with the lid. Pressed in the direction (arrow F1), and with this pressing, the pair of sealing resin films 6 are fed from the resin film rolls 61A and 61B held by the pair of feeding reels 60 while being given tension. .

  When the forward movement of the lidded container 2 reaches a predetermined amount, the lidded container 2 stops at a predetermined position. At this time, as shown in FIG. 18, the pair of sealing resin films 6 are wound around the front half of the upper end portion of the lidded container 2 in a tensioned state. Here, the driving by the driving sources 52 and 53 of the second advancing / retreating mechanism 50 is released, and the film clamping / tension applying means 40 is moved forward by the biasing force of the coil spring 51, and as shown in FIG. A pair of sealing resin films 6 are sandwiched by pinch rolls 41 and 42.

  In the present embodiment, since the film clamping / tensioning means 40 is disposed upstream of the film fusing / fusion means 20 in the transport direction (arrow F1) of the lidded container 2, a pair of sealing resin films 6 is provided. As shown by a solid line in FIG. 19, the distance between the opposing portions is reduced in a state where tension is applied from the front half of the upper end portion of the lidded container 2 toward the pair of pinch rolls 41 and 42. At the same time, the forward drive of the drive source 33 in the first advance / retreat mechanism 30 causes the sandwiching portions 21 and 22 of the film fusing / fusing means 20 to move forward from the position indicated by the solid line to the position indicated by the phantom line in FIG. When the sandwiching portions 21 and 22 are brought close to each other, the pair of sealing resin films 6 are separated from each other by the boundary 2A, 2A between the front half and the rear half of the upper end portion of the lidded container 2 as shown by the phantom line. A pair of sealing resin films 6 sandwiched between the pinch rolls 41 and 42 by the sandwiching portions 21 and 22 and indicated by imaginary lines between the sandwiching portions 21 and 22 and the boundaries 2A and 2A are as follows: Furthermore, it will be in the state extended elastically with strong tension | tensile_strength.

  The pair of sealing resin films 6 sandwiched by the sandwiching portions 21 and 22 are melted at the center position in the transport direction (arrow F1) by the thermal fusing blades 21a and 22a, and both upstream and downstream in the transport direction of the center position. Are fused by the close contact of the heat fusion surfaces 21b, 22b, 21c22c. Here, the pinching rolls 21 and 22 of the film fusion / melting means 20 and the pinch rolls of the film clamping / tensioning means 40 by driving the drive sources 33, 52, 53 of the first and second advance / retreat mechanisms 30, 50. 41 and 42 and the tension applying rolls 43 and 44 with a hook retreat mutually.

  As a result, the heat fusion surfaces 21b and 22b on both the upstream and downstream sides in the transport direction (arrow F1) and the approach between 21c and 22c are released, and the heat fusion surfaces 21b and 22b on the downstream side in the transport direction are fused. As shown in FIG. 20, the rear end fused portion 6a has a lid as shown in FIG. 20 due to the elastic return of the pair of sealing resin films 6 indicated by phantom lines between the rear end fused portion 6a and the boundaries 2A and 2A. Displacement to the rear end position of the container 2 is wound around the entire circumference of the upper end portion of the lidded container 2 and the entire circumference in the vicinity of the upper side of the upper end surface 2c of the lidded container 2. Further, when the film clamping / tension applying means 40 moves backward, the front end fusion portion 6b fused by the heat fusion surfaces 21b, 22b on the upstream side in the conveying direction is between the pair of pinch rolls 41, 42. Then, it is positioned corresponding to the height region h1 including the upper end portion of the lidded container 2 and the vicinity of the upper side of the upper end surface 2c and the virtual upright surface 4 and waits. In the following, by repeating the above-described operation, the lidded container 2 has a pair of sealing resin films wound around the entire circumference of the upper end portion and the entire circumference in the vicinity of the upper end surface 2c of the lidded container 2. In the rotated state, it is intermittently sent out by the conveying means 10.

  On the other hand, as shown in FIG. 21, the pair of pinch rolls 41, 42 are greatly separated downstream in the transport direction (arrow F <b> 1) than the pair of hooked tension applying rolls 43, 44, and both 41, 42, 43, A film clamping / tension applying means 40 configured to advance and retreat individually, and a pair of pinch rolls 41, 42 and a pair of hooked tension applying rolls 43, 44 in the film clamping / tension applying means 40; If the resin film winding device 1 has a configuration in which the sandwiching portions 21 and 22 of the film fusing / fusing unit 20 are arranged between the two, the film fusion / The sandwiching portions 21 and 22 of the fusing means 20 are retracted from each other so that the respective sandwiching portions 21 and 22 are spaced apart from each other with an interval allowing passage of the lidded container 2. The pinch rolls 41, 42 and the hooked tension applying rolls 43, 44 in the film clamping / tension applying means 40 are individually retracted against each other against the biasing force of a coil spring (not shown) by the drive of the non-illustrated driving source. Then, they are put on standby with an interval allowing the passage of the lidded container 2 to be allowed.

  In this standby state, when the container 2 with the lid is moved forward by a predetermined movement amount l by the conveying means 10, the front end fusion part 6 b of the pair of sealing resin films 6 is conveyed in the conveying direction by the front end of the lid body 2 b in the container 2 with the lid. Pressed by (arrow F1), and with this press, the pair of sealing resin films 6 are fed out from the wound resin film bodies 61A and 61B held by the pair of feeding reels 60 while being given tension.

  When the forward movement of the lidded container 2 reaches a predetermined amount, the lidded container 2 stops at a predetermined position. At this time, as shown in FIG. 21, the pair of sealing resin films 6 are wound around the front half of the upper end portion of the lidded container 2 in a tensioned state. Here, the drive of the drive source (not shown) of the second advance / retreat mechanism 50 is released, and only the pair of pinch rolls 41, 42 of the film clamping / tension applying means 40 are biased by the bias of the coil spring (not shown). As shown in FIG. 22, the pair of pinch rolls 41 and 42 sandwich the pair of sealing resin films 6 as they are advanced.

  Thus, the pair of sealing resin films 6 are wound around the entire circumference of the upper end portion of the lidded container 2 and the entire circumference in the vicinity of the upper side of the upper end surface 2c of the lidded container 2. At the same time, as shown in FIG. 23, the drive source 33 of the first advancing / retracting mechanism 30 advances the pair of sandwiching portions 21 and 22 of the film fusing / fusing means 20 toward each other to bring them closer to each other and the second advancing / retreating The drive of the drive source (not shown) of the mechanism 50 is released, and the pair of hooked tension applying rolls 43 and 44 of the film clamping / tension applying means 40 are moved forward by the biasing force of the coil spring (not shown). Let

  The pair of sealing resin films 6 sandwiched between the pair of sandwiching portions 21 and 22 is melted at the center position in the transport direction (arrow F1) by the thermal fusing blades 21a and 22a and on the transport direction of the center position. The downstream sides are fused by the close contact of the heat-sealing surfaces 21b, 22b, 21c, and 22c. Here, by driving the drive source 33 of the first advance / retreat mechanism 30 and the drive source (not shown) of the second advance / retreat mechanism 50, as shown in FIG. The parts 21, 22 and the pair of pinch rolls 41 and 42 of the film clamping / tension applying means 40 and the pair of hooked tension applying rolls 43 and 44 are moved backward.

  Thereby, the approach of the heat sealing surfaces 21b and 22b and 21c and 22c on both upstream and downstream sides in the transport direction (arrow F1) is released, and the heat sealing surfaces 21c and 22c on the downstream side in the transport direction are fused. The rear end fusion portion 6a is displaced to the rear end position of the lidded container 2 and is wound around the entire circumference of the upper end portion of the lidded container 2 and the entire circumference in the vicinity of the upper side of the upper end surface 2c of the lidded container 2. Turned. Further, when the film clamping / tension applying means 40 moves backward from each other, the leading end fusion part 6b fused by the heat fusion surfaces 21b, 22b on the upstream side in the transport direction has a pair of hooked tension applying rolls 43, 44 is positioned corresponding to the height region h1 including the upper end portion of the container 2 with lid and the upper side of the upper end surface 2c and the virtual upright surface 4 and waits. In the following, by repeating the above-described operation, the lidded container 2 has a pair of sealing resin films wound around the entire circumference of the upper end portion and the entire circumference in the vicinity of the upper end surface 2c of the lidded container 2. In the rotated state, it is intermittently sent out by the conveying means 10.

  As shown in FIG. 25, the resin film winding apparatus 1 according to the present invention includes a height region h <b> 1 including the upper end portion of the container with lid 2 and the vicinity of the upper side of the upper end surface 2 c on the downstream side of the conveying means 10. 9)), it is desirable to provide a heating zone 16 provided with a downstream conveying means 10A that conveys and discharges the sealing resin film 6 wound corresponding to the above. According to this, the pair of sealing resin films 6 are wound around the entire circumference of the upper end portion and the entire circumference in the vicinity of the upper end surface 2 c, and the lidded container 2 fed out by the conveying means 10 is moved through the heating zone 16. While passing, the pair of wound sealing resin films 6 can be heat-shrinked, and sealing of the lidded container 2 can be carried out continuously, so that the working efficiency is improved.

  Moreover, as shown in FIG. 26, it is desirable that both the conveying means 10 and the downstream conveying means 10A are constituted by a pair of caterpillar type conveying means 10B. According to this, with a simple structure, the lid-equipped container 2 is positioned and held at a predetermined interval and intermittently transported, and corresponds to the height region h1 including the upper end portion of the lid-equipped container 2 and the upper side of the upper end surface 2c. Then, the sealing resin film 6 wound around is thermally contracted, and the sealing of the lidded container 2 can be continuously performed. In FIG. 26, reference numeral 16 denotes a heating zone.

  The description of the above embodiments is merely a detailed description of the preferred specific examples and drawings of the present invention, and does not limit the scope of the claims of the present invention. The technical scope claimed by the present invention should be based on the appended claims, and those skilled in the art having ordinary knowledge in the art can appropriately make changes and improvements. Needless to say, should fall within the technical scope claimed by the present invention. For example, the sealing resin film 6 is wound around the lidded container 2 in which the lid body 2b is externally fitted to the container body 2a. However, the sealing resin film to the lidded container according to the present invention is described. The winding device 1 is not limited to the embodiment described above, and the sealing resin film 6 can be wound around the outer periphery of the lidded container 2 in which the lid body 2b is fitted in the container body 2a. It is. The installation positions of the resin film winding bodies 61A and 61B are arbitrary, and may be set, for example, on the top of the apparatus frame 5. Further, when the resin film 6 is fed from the resin film winding bodies 61A and 61B to the resin film feeding system 70, if the resin film 6 is subjected to inertia due to the inertia of the resin film winding bodies 61A and 61B, the resin film 6 The film winding bodies 61A and 61B may be provided with a damper that functions as a braking means that suppresses inertia and prevents tarmi. Furthermore, tension may be attached to the resin film feeding system 70.

In a form in which food containers such as miso are encased and the top end opening of the container body is simply covered with a lid, it is displayed at the storefront and sold, and the lid is opened by a third party maliciously, and foreign matter enters the product. There is a risk of being. Therefore,
After the sealing resin film is wound around the outer periphery of the upper end of the container main body of the lidded container, the sealing resin film is thermally contracted and displayed at the store in a state where the container main body and the lid are sealed. The purchaser confirms whether or not the sealing is broken, and if the sealing is not broken, the purchaser judges that the food product such as miso sealed in the container body is not contaminated and is safe. Can be purchased.

DESCRIPTION OF SYMBOLS 1 Resin film winding apparatus for sealing to container with lid 2 Container with lid 2a Container body 2b Lid 2c Upper end surface 3 Virtual horizontal surface 4 Virtual elevation surface 10 Conveying means 10A Downstream conveying means 10B Caterpillar type series of conveying means 11 Conveyance reference line 13 Driving source of conveying means 16 Heating zone 20 Resin film fusing / fusing means for sealing 21 Clamping part 21a Thermal fusing blade 21b Thermal fusing surface 21c Thermal fusing surface 9 Lower rotating helical body 30 First advance / retreat mechanism 33 Driving source of first advance / retreat mechanism 40 Sealing resin film sandwiching / tension applying means 41 Pinch roll 42 Pinch roll 43 Tension applying roll 44 Tension applying roll 50 Second advance / retreat mechanism 52 Drive source of second advance / retreat mechanism 53 Second advance / retreat Mechanism drive source 60 Pair of reels 61A Sealing resin film roll 61B Sealing resin Irumu wound body 70 center h predetermined height of the sealing resin film turning system 80 control unit O container with lid F1 conveying direction l movement amount, the conveying distance

Claims (3)

A container with a lid provided with a container main body provided with an opening at the upper end and a lid body that is fitted to the upper end of the container main body to detachably close the opening is separated at a predetermined height by a predetermined interval. A conveying means for positioning and intermittently advancing along the conveyance reference line in the conveyance direction with a predetermined movement amount;
It is arranged corresponding to a height region that intersects the conveying direction of the conveying means and includes the upper end portion of the container with lid and the upper side of the upper end surface, and is orthogonal to the virtual horizontal plane including the conveying reference line. A sandwiching part that sandwiches a virtual elevation surface that rises from both sides at a predetermined position, the sandwiching part having a thermal cutting blade at the center in the transport direction, and upstream and downstream in the transport direction of the thermal cutting blade A sealing resin film fusing and fusing means having heat fusing surfaces adjacent to both sides, and
The sealing resin film fusing and fusing means are advanced to each other, and the sealing resin film is fused by the abutment of the hot fusing blades, and the sealing resin film is fused by the close contact of the heat fusing surfaces. And a first advancing / retreating mechanism for retreating the sealing resin film fusing and fusing means away from each other with a gap allowing the passage of the lidded container,
The sealing resin film fusing and fusing means approaches either the upstream side or both the upstream side and the downstream side in the transport direction and intersects the transport direction, and the upper end and the upper end surface of the lidded container A pinch roll which is arranged corresponding to a height region including the vicinity of the upper side of the sheet and advances in the crossing direction of the conveying direction to sandwich the sealing resin film with the virtual elevation face interposed therebetween, and the same height as the pinch roll A sealing resin film sandwiching / tensioning means provided with at least a pair of tension applying rolls arranged to cross the conveying direction corresponding to the thickness region and apply tension to the sealing resin film;
The sealing resin film sandwiching / tensioning means are moved forward to sandwich the sealing resin film with a pinch roll, and the tensioning roll applies tension to the sealing resin film, and the sealing resin film sandwiching A second advancing / retreating mechanism that retracts the tension applying means from each other and separates the pinch roll and the tension applying roll with an interval that allows passage of the lidded container;
A pair of feeding reels that rotatably hold and feed out a thin sealing resin film winding body having a width corresponding to a height region including the upper portion of the container with lid and the vicinity of the upper side of the upper end surface;
The tip fusion part of a pair of sealing resin films fused on the heat fusion surface adjacent to the downstream side in the conveyance direction of the thermal cutting blade is positioned on the virtual elevation surface, and the tip fusion part is the conveyance means. As a result, the pair of sealing resin films continuous to the tip fusion part are fed out with tension applied from the pair of feeding reels as they are pressed against the lidded container that intermittently advances by a predetermined amount of movement. A direction changing system for guiding the pair of sealing resin films to the sealing resin film sandwiching / tensioning means;
A driving source for the conveying means for intermittently driving the conveying means with a predetermined amount of movement, a driving source for the sealing resin film fusing and fusing means for advancing / retreating the first advancing / retracting mechanism, and a seal for advancing / retreating the second advancing / retreating mechanism Control means for electrically controlling the driving of the drive source of the resin film clamping / tensioning means based on a set control program;
A resin film winding device for sealing around a container with a lid, comprising: The sealing resin film winding apparatus for a lidded container according to claim 1, wherein the winding is performed on the downstream side of the conveying means corresponding to the height region including the upper end portion of the lidded container and the upper side of the upper end surface. The sealing resin film winding apparatus to the lidded container provided with the heating zone which provided the downstream conveyance means which conveys and discharges the sealed resin film heated. The sealing resin film winding apparatus for a lidded container according to claim 2, wherein the sealing resin film is wound on a lidded container configured by the caterpillar type transporting means to constitute both the transporting means and the downstream transporting means. Times equipment.

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