JP3718130B2 - Banding packaging device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a band wrapping apparatus for hanging a film band on a stacked container.
[0002]
[Prior art]
For example, a banding and packaging apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-344208 is known as a banding and packaging apparatus in which a plurality of food containers filled with natto and the like are stacked and then packaged integrally with a sheet-like film. ing.
According to the banding and packaging apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-344208, as shown in FIG. 8, the sheet-like film F0 having one end coated with an adhesive in advance is formed on both sides of the stacking container K0. Bend along. And the both ends of the sheet-like film F0 are folded by the first and second folding members 101, 102 arranged in a pair on the left and right sides, and are in contact with each other and overlap each other at the bottom of the stacking container K0. Is done. A pressing member 103 is provided on the surface of the second folding member 102 on the side in contact with the sheet-like film F0, and both end portions of the sheet-like film F0 are in a superposed state and are pressed by the pressing member 103. Each other is attached by an adhesive.
[0003]
[Problems to be solved by the invention]
However, in the conventional banding and packaging apparatus described above, before the both end portions of the sheet-like film F0 are correctly folded to the predetermined positions by the first and second folding members 101 and 102, they adhere to each other with an adhesive. May end up. In this case, the stacked container K0 will be packaged in a loose state, and the resulting packaged product will look poor.
The present invention was devised to solve such problems, and is positioned when both ends of the sheet-like film are stuck when the sheet-like film is wrapped around a stacked container and packaged. It is an object of the present invention to provide a wrapping packaging device that does not shift and has a very good appearance.
[0004]
[Means for Solving the Problems]
This technical problem is solved by the band-wrapping packaging device described in each claim. As shown in FIG. 7, for example, the wrapping packaging apparatus here is responsible for a packaging process in which a sheet-like film F is wound around a stacked container K formed by stacking a plurality of containers, and both ends are bonded. is there.
[0005]
In the band wrapping apparatus according to claim 1, the sheet-like film that is supplied to the uppermost surface of the stacking container and is bent along the left and right side portions has both ends at the first folding member and the second folding member. It is folded along the bottom part of the said stacking container by a folding member (henceforth a 1st and 2nd folding member). At that time, either end of the sheet-like film is folded by the first folding member, and then the other end is folded by the second folding member. The terms “first folding member” and “second folding member” used in the present specification are terms used to clarify only the order of folding the end portions of the sheet-like film. This is not a term used to specify that the feature, role, etc. exist only in one of the folding members.
[0006]
  Since the bottom portion of the stacking container is supported by the support rail, both end portions of the sheet-like film are folded into the lower position (lower position) of the support rail. And at least a part of the sheet-like film is attached to the stacking container and attached to the bottom of the stacking container to be in a polymerized state (part corresponding to the banding polymerization allowance). An adhesive is applied by an adhesive application device. The application of the adhesive by the adhesive application device may be performed while the film is continuous (while it is a continuous film), or after being cut into a sheet-like film one by one. Also good. And when the both ends of the sheet-like film folded into the lower position of the support rail are pressed by the pressing member, the both ends of the sheet-like film are sandwiched between the support rail and the pressing member, and the adhesive Attach with.
  In such a band wrapping apparatus, the both ends of the sheet-like film are folded into the lower position of the support rail by the first and second folding members, and the both ends of the folded sheet-like film are pressed. The step of attaching is performed separately. That is, when folding both ends of the sheet-like film, it is possible to maintain a distance without contacting them, and the two ends of the sheet-like film are stuck together before being folded into a predetermined position, It is possible to prevent a problem that the stacked containers are packaged in a loose state.
Moreover, the both ends of the sheet-like film are folded at the same height by the first and second folding members. Both ends of the sheet-like film are “folded at the same height” means that both ends of the sheet-like film folded along the left and right sides of the stacking container are almost on the bottom surface of the stacking container. Along with the first and second folding members disposed at the same height, it is folded from the left and right sides.
As described above, when both end portions of the sheet-like film are folded so as to have the same height along the bottom surface of the stacking container, the sheet-like film corresponding to the difference in the folded height is generated as slack. The sheet-like film is stretched along the periphery of the stacking container without any waste, so that it looks good.
[0007]
  In the band wrapping apparatus according to claim 2,A sheet-like film that is supplied to the uppermost surface of the stacking container and is bent along the left and right side portions has a first folding member and a second folding member (hereinafter referred to as the first and second folding members) at both ends. And is folded along the bottom of the stacking container. At that time, either end of the sheet-like film is folded by the first folding member, and then the other end is folded by the second folding member. The terms “first folding member” and “second folding member” used in the present specification are terms used to clarify only the order of folding the end portions of the sheet-like film. This is not a term used to specify that the feature, role, etc. exist only in one of the folding members.
[0008]
  Since the bottom portion of the stacking container is supported by the support rail, both end portions of the sheet-like film are folded into the lower position (lower position) of the support rail. And at least a part of the sheet-like film is attached to the stacking container and attached to the bottom of the stacking container to be in a polymerized state (part corresponding to the banding polymerization allowance). An adhesive is applied by an adhesive application device. The application of the adhesive by the adhesive application device may be performed while the film is continuous (while it is a continuous film), or after being cut into a sheet-like film one by one. Also good. And when the both ends of the sheet-like film folded into the lower position of the support rail are pressed by the pressing member, the both ends of the sheet-like film are sandwiched between the support rail and the pressing member, and the adhesive Attach with.
In such a band wrapping apparatus, the both ends of the sheet-like film are folded into the lower position of the support rail by the first and second folding members, and the both ends of the folded sheet-like film are pressed. The step of attaching is performed separately. That is, when folding both ends of the sheet-like film, it is possible to maintain a distance without contacting them, and the two ends of the sheet-like film are stuck together before being folded into a predetermined position, It is possible to prevent a problem that the stacked containers are packaged in a loose state.
Moreover, the pressing member which presses the both ends of a sheet-like film from the downward direction is comprised as a member provided in the outer periphery of the rotary body by protruding at equal intervals.
With such a configuration, the pressing member can be continuously pressed at regular intervals against both ends of the folded sheet-like film, and a large number of stacked containers are supplied at high speed. Even in this case, both end portions of the sheet-like film can be reliably pressed and adhered.
[0009]
  ClaimIn the banding packaging apparatus according to 3, the cutout portion is provided in at least one of the first and second folding members.
The first and second folding members hold both ends of the sheet-like film folded at the lower position of the support rail in the folded state until they are pressed by the pressing member. Even when both ends of the sheet-like film are held in this way, the required space is secured by the notch at the position where the adhesive is applied, so the pressing member is pressed from below through the space. Can be made. Thereby, the both ends of a sheet-like film are reliably stuck in the state folded firmly by the 1st and 2nd folding member.
[0010]
  ClaimIn the banding packaging apparatus according to 4, the tip end portion of the second folding member is inclined downward.
Both ends of the sheet-like film are folded along the bottom of the stacking container by the first and second folding members, but when they approach each other close to each other, the adhesive applied to one or both There is a risk that the agents may stick to each other. Therefore, it is necessary to maintain a certain distance so that both ends of the sheet-like film do not contact until folding is completed.
Therefore, in the band wrapping apparatus according to claim 4, one end of the sheet-like film is first folded in a substantially parallel state along the bottom of the stacked container by the first folding member, whereas the other The end of is folded in a state of being inclined downward by the second folding member. Thereby, since one edge part and the other edge part of a sheet-like film are made into the state which faced maintaining a certain amount of distance from each other, they do not contact each other until it is pressed from below by a pressing member. Thereby, both ends of the sheet-like film can be correctly folded and pasted to a predetermined position, and a packaged product packaged without slack along the periphery of the stacked container can be obtained. .
[0011]
  ClaimIn the belt-wrapping apparatus described in 5, the friction member having a large frictional resistance with the sheet-like film and a required thickness is attached to the support surfaces of the first and second folding members. Here, the “support surfaces” of the first and second folding members are surfaces on the side where the folding members are in contact with and support the sheet-like film when folding both ends of the sheet-like film. .
Thereby, when folding both ends of the sheet-like film into the bottom part of the stacking container with the first and second folding members, the sheet-like film can be wound while applying tension, and the film is slackened when banded. Can be prevented satisfactorily. At that time, since the friction member has a required thickness, the sheet-like film can be pressed against and supported by the stacking container. The film after folding can be held without being misaligned until it is done.
[0012]
  ClaimIn the band hanging packaging apparatus according to 6, the transfer means for transferring the stacked container in a state of being placed on the support rail includes an upper conveyor.
A sheet-like film is supplied to the uppermost surface of the stacked container transferred by the transfer means by the film supply means. The stacked containers are further transferred by the transfer means, and are sandwiched between the upper conveyor and the support rail disposed above. The vertical distance between the upper conveyor and the support rail is set to be at least partially smaller than the height of the stacking container, and while the stacking container is being held between them, it is It will be in the state compressed moderately toward. While the stacked container is compressed up and down, if the sheet film is banded and both ends are attached, the sheet film is stretched by the restoring force of the compressed stacked container In addition, it is possible to obtain a package that does not sag in the film and has a good appearance.
[0013]
  ClaimIn the banding and packaging apparatus according to claim 7, the upper conveyor includes a traveling belt having a width smaller than the width dimension of the stacking container, and further positioning means that abuts along the left and right edges of the uppermost surface of the stacking container. It has. Here, the “width dimension of the stacked container” refers to the width dimension on the uppermost surface of the stacked container.
The stacked containers transferred by the upper conveyor are transferred with the uppermost surface thereof pressed from above by the traveling belt. Thereby, the sheet-like film supplied to the uppermost surface is bent while being correctly positioned on the traveling belt.
The sheet-like film supplied to the uppermost surface of the stacking container is also positioned by positioning means that abuts along the left and right edges of the uppermost surface. That is, the sheet-like film is urged downward by the traveling belt in the vicinity of the central portion of the uppermost surface of the stacking container, and urged downward by the positioning means in the vicinity of the left and right edges. Thereby, even if it is a comparatively flexible container such as a natto container, the sheet-like film is bent along the side part while the uppermost surface thereof is pushed down substantially uniformly without being locally deformed. Therefore, a good-looking package product can be obtained without generating a gap or the like between the uppermost surface of the banded stacked container and the sheet-like film.
In addition, when the uppermost surface of the stacked container is entirely pressed by the upper conveyor and the positioning means, the amount of compressive deformation in the vertical direction can be set smaller than when pressing only by the upper conveyor, so excessive compression to the container is possible. It is possible to more effectively prevent the deformation associated with, and when the sheet-like film is banded, the apparent volume of the banded packaged product becomes small, and the product value can be prevented from being lowered due to the reduced volume feeling. .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the banding and packaging apparatus 1, and FIG. 7 is a diagram for explaining the state of banding and packaging step by step. This wrapping and packaging apparatus 1 winds a sheet-like film F drawn from a raw roll R and cut into a predetermined size on a stacked container K formed by stacking a plurality of containers, and wound around the sheet-like film F. The both ends of the film F can be stuck repeatedly with a pressure-sensitive adhesive H that can be re-sealed repeatedly to obtain a continuous wrapping product G as a product. When the components of the wrapping packaging apparatus 1 are roughly classified according to roles, transfer means for transferring the stacked containers K in a substantially horizontal direction, and film supply for supplying the sheet-like film F to the uppermost position of the stacked containers K Means, folding means for folding the sheet-like film F along the left and right sides of the stacking container K, and folding means for folding both ends of the sheet-like film F along the bottom of the stacking container K And the sticking means which sticks the both ends of the sheet-like film F wound circularly along the circumference | surroundings of the stacking container K.
In this example, the container to be packaged is a polystyrene food container into which natto is subdivided into servings, and those having a predetermined elasticity in the vertical direction when used in a stacked state are preferably used. The
Hereinafter, each part structure of a banding packaging apparatus is demonstrated in order.
[0015]
(1) Transfer means
The transfer means will be described.
As shown in FIG. 1, a stacked container K supplied in a state where a predetermined number of layers are stacked from a supply facility or the like (not shown) arranged in the previous process is set at a constant horizontal speed by the container transport conveyor 2. Then, it is transferred toward the downstream side (right direction in FIG. 1) of the banding packaging device 1. The container transport conveyor 2 has an endless chain 2c in which a plurality of pushing members 2a for pushing and transporting the rear part of the stacked container K are hung on a driving side sprocket 2b and a driven side sprocket (not shown). They are arranged at equal intervals. The drive side sprocket 2b is driven by an appropriate drive device (not shown) such as an electric motor.
A rail member 4a is attached to the container transport conveyor 2 substantially in parallel with the transport direction of the stacked containers K. The rail member 4a is formed to have a width that is slightly narrower than the width of the bottom of the stacked container K, and the stacked container K is transported while being placed on the rail member 4a. A recess 2c is formed at the lower end of the pressing member 2a so as to straddle the rail member 4a, so that it does not interfere with the rail member 4a even while the rear portion of the stacking container K is pushed and transferred. (See FIG. 2). Further, the pressing member 2a is also formed with a recess 2d in the upper side portion, so that contact interference with the traveling belt 3d of the upper conveyor 3 described later is avoided.
A support plate 4b formed to have the same width as that of the rail member 4a is extended on the downstream side of the rail member 4a in the container transfer direction. The support plate 4b is fixed in a cantilever shape having a predetermined elasticity and can be bent in the vertical direction.
A combination of the rail member 4a and the support plate 4b connected in series along the container transfer direction corresponds to the support rail 4 in the present invention.
[0016]
A sheet-like film F is supplied (placed) on the uppermost surface of the stacked container K conveyed by the container conveying conveyor 2 by a film supply means described later. Then, the stacked container K that is pushed by the pushing member 2a and moves on the rail member 4a in a state where the sheet-like film F is placed contacts the transfer surface of the upper conveyor 3 described below.
[0017]
The upper conveyor 3 presses the sheet-like film F from the top against the stacking container K transferred in the downstream direction by the pressing member 2a to prevent the positional deviation, and elasticizes the stacking container K until the banding process is completed. The sheet-like film F, which is hung by the restoring force of the stacked container K when it is deformed and the pressing force is released, is tightly tensioned to eliminate slack and improve the appearance of the product.
As shown in FIG. 1, the upper conveyor 3 has pulleys 3a, 3b, 3c and a running belt 3d, and its conveying surface is installed in parallel with the support rail 4b as a whole. The pull-in surface for pulling the stacking container K between the support rails 4b is inclined downward by the pulley 3b, and the stacking container K transferred by the pressing member 2a is smoothly drawn and sandwiched between them. It has come to be.
The pulley 3c is configured to be driven in synchronism with the container transport conveyor 2, a film feeding mechanism and a film pressing mechanism, which will be described later, via a driving device (not shown).
[0018]
FIG. 2 is a schematic cross-sectional view taken along the line AA of the banding and packaging apparatus 1 in FIG. 1, and the traveling belt of the upper conveyor 3 with the sheet-like film F supplied to the uppermost surface of the stacking container K interposed therebetween. 3d shows that the transfer surface abuts from above, and the stacked container K is transferred while being sandwiched between the traveling belt 3d and the support plate 4b.
As shown in FIG. 2, the traveling belt 3 d of the upper conveyor 3 is set to have a width dimension smaller than the left and right widths of the uppermost surface of the stacking container K, and the left and right edge portions of the uppermost surface of the stacking container K Is left in contact with the top only in the vicinity of the substantially central portion. Both sides of the upper conveyor 3 are surrounded by folding guides 11 disposed substantially over the entire length along the transfer direction of the stacked containers K. The folding guide 11 serves as a guide member that bends the sheet-like film F placed on the stacking container K along the side portions (details will be described later). The bending guide 11 is provided with a large number of positioning rollers 3e over the entire length at positions substantially corresponding to the heights of the left and right side edges in the width direction of the stacked container K to be transferred. The uppermost surface of the stacking container K is pressed by the traveling belt 3d in the vicinity of the substantially central portion, and the left and right edge portions are transferred in a state of being in contact from above by the positioning roller 3e. Thereby, although the stacking container K is made of polystyrene having a relatively high flexibility, the sheet-like film F is hung while the uppermost surface thereof is pressed by a substantially constant amount without being locally deformed. Therefore, it is possible to obtain a wrapping package G having a good appearance. Further, in this case, since the amount of compressive deformation in the vertical direction of the stacked container K can be set smaller than the case where it is pressed locally only by the upper conveyor 3, deformation due to excessive compression to the container can be prevented more effectively. In addition, when the sheet-like film F is banded, the apparent volume of the band-wrapped package G is reduced and the volume feeling is prevented from being reduced. The positioning roller 3e described above corresponds to the “positioning means” in the present invention.
[0019]
The distance M between the support plate 4b that supports the bottom of the stacking container K and the traveling belt 3d that presses the uppermost surface is slightly smaller than the height of the stacking container K (the height in an uncompressed state). Is set. Thereby, adjustment is made so that the stacking container K is compressed with an appropriate pressing force by the support plate 4b which is fixed in a cantilever shape and has elasticity, and the traveling belt 3d. When the sheet-like film F is banded and wrapped in the compressed stacking container K and released from the compressed state to restore the original shape, the entire sheet-like film F looks properly stretched. Can be obtained.
[0020]
(2) Film supply means
Next, the film supply means will be described.
As shown in FIG. 1, the film supply means adjusts the tension of the continuous film F0 drawn continuously from the raw roll R by a tension adjusting mechanism, and the transfer amount corresponding to the film width for one packaging length. A film supply mechanism 5 that intermittently feeds the adhesive, an adhesive application device 6 that applies the adhesive H to a predetermined position on the fed continuous film F0, and a sheet-like film having a predetermined size for the continuous film F0. A cutting device 7 that cuts into F and a film transfer device 8 that sequentially places the sheet-like film F on the uppermost surface position of the stacking container K in accordance with the transfer timing of the stacking container K are configured.
[0021]
FIG. 3 is an enlarged view of the vicinity of the adhesive application device 6 and the cutting device 7.
As shown in FIG. 3, the adhesive applicator 6 is an apparatus that applies the adhesive H at predetermined intervals by a nozzle 6a to one edge in the width direction of the drawn continuous film F0. The interval at which the adhesive H is applied is set to an interval that matches the cutting pitch of the continuous film F0 fed out intermittently, and the amount of the adhesive H sprayed from the nozzle 6a is substantially constant. The amount is controlled. As shown in FIG. 7, the application position of the adhesive H is such that when the cut continuous film F0 becomes a sheet-like film F and is banded around the stacking container K, the sheet-like film F Of the continuous film F0 so as to be at a position (position corresponding to the banding polymerization allowance) corresponding to the polymerization allowance (the portion where the both end portions of the sheet-like film F overlap) of the end folded first among the both ends of A cutting pitch, an application interval of the adhesive H, and the like are set.
[0022]
The adhesive H is preferably a pressure-sensitive adhesive that can be resealed repeatedly. Such an adhesive H is disclosed in, for example, Japanese Patent Laid-Open No. 2000-344208. Further, the nozzle 6a is used for applying the adhesive H, but a nozzle 6a suitable for applying the adhesive is also disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-344208.
[0023]
The continuous film F0 coated with the adhesive H is intermittently fed toward the cutting device 7 while being sandwiched between the pair of feed rollers 5b, and is cut in the width direction by the cutting device 7 composed of a cutting cutter 7a and the like. One sheet of film F is used. The feed roller 5b has a peripheral surface shape in which a recess is formed at the film clamping position corresponding to the adhesive application position of the continuous film F0, so that the adhesion with the adhesive H is avoided. . Then, the sheet-like films F cut one by one by the cutting device 7 are supplied to the uppermost surface position of the stacking container K by the film transfer device 8 described below.
[0024]
As shown in FIGS. 1 and 3, the film transfer device 8 includes a film feeding mechanism 9 and a film pressing mechanism 10.
The sheet-like films F cut one by one by the cutting device 7 are sandwiched between the upper supply belt 9a and the lower supply belt 9b of the film feeding mechanism 9 arranged obliquely downward and stacked. The container K is supplied to the uppermost surface of the stacked container K at a predetermined correct position in accordance with the timing at which the container K is transferred. Then, the feeding claw 10a of the film pressing mechanism 10 holds the sheet film F on both sides so that the sheet film F placed on the uppermost surface of the stacking container K is not twisted to the left and right. Support from. The feed claw 10a is mounted on an endless chain 10e hung on the front and rear sprockets 10b and 10c, and the front and rear sprockets 10b and 10c are driven to synchronize with the container transport conveyor 2 and the film feed mechanism 9. Thus, it moves forward at the same speed as the pressing member 2a. In this way, the stacking container K that is pushed by the pressing member 2a and moves while the sheet-like film F is supported by the feed claw 10a is placed on the drawing surface of the traveling belt 3d of the upper conveyor 3 located on the downstream side. Drawn in.
[0025]
(3) Bending means
The film folding means will be described.
As shown in FIGS. 1 and 2, standing plate-like bending guides 11 are disposed in the vicinity of the left and right sides of the upper conveyor 3. The pair of left and right bending guides 11 should be called a bending mechanism that bends the sheet-like film F, and as shown in FIG. 1, the tip part forms an inclined part 11 a inclined obliquely downward. The sheet-like film F transferred together with the stacking container K is guided by the inclined portion 11a and is gradually bent along the side portion of the stacking container K. After passing through the inclined portion 11a, the sheet-like film F folded along the left and right side portions of the stacking container K is in a state where both ends are held in a suspended shape by the pair of folding guides 11.
[0026]
(4) Folding means
The film folding means will be described.
The sheet-like film F folded along the side portion of the stacking container K by the bending guide 11 has both ends that are in a hanging shape, and the first and second folding members 12a and 12b are attached to the stacking container K. Fold along the bottom.
The first and second folding members 12a and 12b are configured as a pair of left and right plate-like members arranged so as to be inserted substantially in parallel along the bottom surface of the stacking container K, as shown in FIG. In addition, they are mounted at equal intervals on an endless chain 23 that is hung on the sprockets 21 and 22 that form a pair of front and rear, and are moved downstream at the same speed as the transfer speed of the stacked container K.
[0027]
A mechanism for moving the first and second folding members 12a and 12b and inserting them along the bottom surface of the stacking container K will be described in detail with reference to FIGS.
FIG. 4 is a schematic cross-sectional view taken along the line BB of the banding and packaging apparatus 1 in FIG. 1, and an endless chain 23 hung on the sprocket 21 and first and second folding members mounted on the endless chain 23. 12a and 12b are shown. As shown in FIG. 4, the sprocket 21 and the endless chain 23 are arranged in four rows in two rows symmetrically in total (this four rows are connected to the sprockets 21 a to 21 d and the endless chains 23 a to 23 d from the right side of the drawing. To do). Similarly to these, four rows of sprockets 22 which are paired with the front and rear of the sprocket 21 (not shown) are arranged so that the endless chains 23a to 23d arranged in parallel with the four rows circulate at a constant speed in the same direction. It is configured.
The configuration on the right side of the banding and packaging apparatus 1 in FIG. 4 will be described. A plurality of substantially L-shaped attachment members 24a are respectively attached to the endless chains 23a and 23b hung on the sprockets 21a and 21b. Both ends of the shaft 26a are held by a bearing 25a fixed to the mounting member 24a. Thereby, the shaft 26a is fixed so as to span between the two endless chains 23a, 23b on the right side, and a slide member 27a that is freely slidable in the axial direction is provided around the shaft 26a. ing. The first folding member 12a can be slid back and forth in the direction orthogonal to the transport direction of the stacked container K by being attached to the slide member 27a. A cam follower 28a is attached to the bottom of the slide member 27a, and is fitted into a cam groove 30a of a cam plate 29a installed at the lower part of the first folding member 12a.
The configuration on the left side of the drawing is the same as above, and the second folding member 12b is mounted on the endless chains 23c and 23d hung on the sprockets 21c and 21d, and can move in the same direction as the transfer direction of the stacked container K. And, it is configured to be slidable back and forth in a direction orthogonal to the transfer direction of the stacked container K.
[0028]
FIG. 5 is a schematic view of the first and second folding members 12a and 12b shown in FIG. 4 as viewed from above.
As shown in FIG. 5, a plurality of first and second folding members 12 a and 12 b are arranged at equal intervals along the transfer direction of the stacked container K. The arrangement interval of each of the first and second folding members 12a and 12b is the same as the mounting interval (pitch) of the pressing member 2a, and in synchronization with the speed at which the pressing member 2a moves the stacking container K, The first and second folding members 12a and 12b arranged in a pair of left and right are configured to repeat the operation of approaching / separating each other.
The proximity / separation operation of the first and second folding members 12a and 12b can be smoothly moved while being fitted in the cam grooves 30a and 30b formed in the cam plates 29a and 29b. This is achieved by the cam followers 28a and 28b. That is, when the first and second folding members 12a and 12b move in the same direction as the transfer direction of the stacking container K, the cam followers 28a and 28b are guided along the cam grooves 30a and 30b. The two folding members 12a and 12b are also guided and moved by the cam grooves 30a and 30b, so that their proximity / separation operation is achieved.
The cam grooves 30a and 30b are formed asymmetrically with respect to the center line L in the transport direction of the stacked container K as shown in FIG. That is, after the first folding member 12a is actuated and one end of the sheet film F is folded on the lower surface of the support plate 4b, the second folding member 12b is actuated so that the phase is slightly delayed. The other end of the sheet-like film F is formed so as to be folded later. The shapes of the rear half portions of the cam grooves 30a and 30b are almost symmetrical. When the both end portions of the sheet-like film F are pasted, the first and second folding members 12a and 12b are simultaneously separated to the retracted positions on both sides. It is formed to move.
[0029]
Next, referring to FIG. 4 and FIG. 5, an aspect in which both end portions of the sheet-like film F are folded by the first and second folding members 12 a and 12 b inserted into the bottom of the stacking container K will be described. This will be described below.
As shown in FIGS. 4 and 5, friction members 31a and 31b each having a substantially rectangular plate shape and a substantially trapezoidal cross section are attached to the support surfaces of the first and second folding members 12a and 12b, respectively. Has been. Here, the “support surface” is a surface on the side in contact with the sheet-like film F when the first and second folding members 12a and 12b fold both ends of the sheet-like film F. The friction members 31a and 31b are formed so as to have a required thickness by a material that has a large friction with the sheet-like film F and is difficult to slip, such as urethane rubber.
First, when the first folding member 12a guided in the cam groove 30a is inserted into the bottom of the stacking container K, the sheet-like film is placed on the top surface of the stacking container K and folded along the side. One end of F is folded into the bottom of the stacking container K so as to be drawn into the friction member 31a. Next, when the second folding member 12b is inserted into the bottom of the stacking container K, the other end of the sheet film F is pulled into the friction member 31b so that it is folded into the bottom of the stacking container K. It is. At this time, due to the friction of the friction members 31a and 31b, both end portions of the sheet-like film F are firmly folded and held to a predetermined position while tension is applied. Thereby, the winding tension acts on the sheet-like film F, and banding without slack becomes possible.
Further, since the friction members 31a and 31b have a required thickness (for example, about 5 mm), when the first and second folding members 12a and 12b are inserted, the bottom portion of the stacked container K and the friction member 31a. , 31b sandwich the sheet-like film F and hold the folded sheet-like film F without misalignment.
[0030]
As shown in FIG. 4, the vicinity of the tip of the second folding member 12b that folds the end of the sheet-like film F from behind is bent to form a bent portion 32b that is inclined downward by a required angle (for example, about 30 °). are doing.
When both end portions of the sheet-like film F are folded by the first and second folding members 12a and 12b, one end portion is parallel along the bottom surface of the stacking container K by the tip portion 32a of the first folding member 12a. And in contact with the lower surface of the support plate 4b. The other end portion is slightly inclined downward along the inclination of the bent portion 32b of the second folding member 12b, and is held in a state of being bent along the lower surface of the first folding member 12a.
Of the both ends of the sheet-like film F, the adhesive H is applied to the portion corresponding to the banding polymerization margin of the end held in parallel by the first folding member 12a, but the other end is Since it is held in the state described above, the distance between the both end portions is maintained. Thereby, the malfunction which the both ends of the sheet-like film F stick in an unplanned position is avoided, for example, it is prevented effectively that the sheet-like film F is tied in the loose state. Both end portions of the sheet-like film F are correctly folded by the first and second folding members 12a and 12b to a predetermined depth at the lower position of the support plate 4b, and then pasted by pasting means described later. .
[0031]
Moreover, as shown in FIG. 4, the 1st and 2nd folding members 12a and 12b are set as the structure which folds the both ends of the sheet-like film F from the right-and-left both sides at the same height mutually.
Since both end portions of the sheet-like film F are pressed later by the sticking means to be described later, at the stage of being folded from the left and right sides by the first and second folding members 12a, 12b, they are in contact with each other. There is no need. That is, the first and second folding members 12a and 12b themselves do not need to overlap vertically when they are close to each other, and are disposed at the same height and do not interfere with contact as shown in FIG. If it is close to, it can be packaged.
Thus, when the both ends of the sheet-like film F are folded so as to have the same height along the bottom of the stacking container K (the lower surface of the support plate 4b), this corresponds to the difference in height of folding. The sheet-like film F does not occur as a slack, and a good-looking banded packaging product G on which the sheet-like film F is banded around the stacking container K without waste can be obtained.
[0032]
(5) Sticking means
The sticking means for sticking the both ends of a film is demonstrated.
As shown in FIG. 1, an endless chain 33 is hung and interlocked with a sprocket 22 for driving the first and second folding members 12 a and 12 b and a sprocket 34 coaxially connected to a rotary drum 35. It is configured as follows. Thus, the rotating drum 35 is configured to rotate at a constant speed in the same direction as the sprocket 22 rotates in one direction. 2 is a schematic cross-sectional view of the band-wrapping packaging device 1 in FIG. 1 as seen from the AA arrow, and shows a state where the sprocket 34 and the rotary drum 35 are coaxially connected by a shaft 38 ( (See the right side of the drawing).
As shown in FIGS. 1 and 2, the rotating drum 35 is made of a heat-resistant elastic material such as silicon rubber formed in a disk shape with a required thickness, and a plurality of blocks formed in a block shape on the circumference thereof. The pressing members 36 are arranged at equal intervals. By using an elastic material having a certain degree of softness, such as silicon rubber, for the pressing member 36, the sheet-like film F can be flexibly brought into close contact with the support plate 4b so that more reliable adhesion can be performed. Is possible. Moreover, when pressing the both ends of the sheet-like film F, it is also prevented that they are scratched. Furthermore, by using an elastic material having heat resistance for the pressing member 36, it is possible to prevent the pressing member 36 from being deteriorated due to heat held by the adhesive H or frictional heat with the sheet-like film F. it can.
[0033]
FIG. 6 is an enlarged view of the vicinity of the rotary drum 35 of the banding and packaging apparatus 1 in FIG. 1 (the upper conveyor 3 is omitted for the sake of clarity).
When the stacking container K moves to a position above the rotating drum 35 (the position shown in FIG. 6), the bottom portion is pushed by the pressing member 36 disposed on the rotating drum 35 that rotates in one direction. It is pressed from below. At this time, the bottom of the stacking container K is supported by the support plate 4b, and the both ends of the sheet-like film F are folded at the lower position of the support plate 4b (the state shown in FIG. 4). It has become. Then, one end portion of the sheet-like film F held in a state of being bent along the lower surface of the first folding member 12a is placed at the distal end portion of the first and second folding members 12a and 12b described later. It is pressed toward the other end held in parallel by the first folding member 12a through the formed concave notch 37. Thus, both end portions of the sheet-like film F are sandwiched between the pressing member 36 and the support plate 4b with an appropriate pressing force, and are adhered with the adhesive H. As described above, since the support plate 4b is fixed in a cantilever shape and can be flexed up and down appropriately, the support plate 4b absorbs the pressing force of the pressing member 36 and is transmitted directly to the stacking container K. This prevents the stacking container K from being scratched.
[0034]
As shown in FIG. 5, a concave notch 37 is provided at the tip of each of the first and second folding members 12a and 12b. Thereby, even when both ends of the sheet-like film F are folded, the required space S is secured at the bottom of the stacking container K, and the pressing member 36 is lowered through the space S. By directly pressing from the both ends of the sheet-like film F, the both ends of the sheet-like film F are surely adhered.
In addition, the notch part 37 does not necessarily need to be provided in both the 1st and 2nd folding member, and if the contact at the time of the pressing member 36 pressing can be avoided, it will have an appropriate shape only in one folding member. May be provided.
[0035]
The rotational speed of the rotary drum 35 and the mounting interval (pitch) of the pressing member 36 are set so as to synchronize with the transport speed, pitch, etc. of the transported stacking container K, and one stacking container K is set. Each time passes, the pressing operation by the pressing member 36 is performed once. Even when a large number of stacked containers K are transferred at a high speed, a stable pressing operation can be continuously performed by synchronizing the rotation speed of the rotary drum 35 with the transfer speed of the stacked containers K. It is configured. The rotating drum 35 corresponds to the “rotating body” in the present invention.
[0036]
Then, as shown in FIG. 1, the stacked container K in which both end portions of the sheet-like film F are adhered and banding packaging is completed is discharged by the discharge conveyor 40. The discharge conveyor 40 receives the stacked container K, which has been transferred to the end position of the container conveyor 2, between the two round belts 40a so that the bottom of the lowermost container is placed, and further to the next process. It is intended to be transferred. The driving pulley 40b for driving the round belt 40a is connected to the driving sprocket 2b of the container transport conveyor 2 via an endless chain 40c. The discharge conveyor 40 is set to discharge the stacked containers K at a slightly higher speed than the container transfer conveyor 2.
The stacked container K discharged by the discharge conveyor 40 is released from the compressed state by the upper conveyor 3. Through the above-described steps, it is possible to continuously obtain a good-looking banded packaging product G in which the sheet-like film F is banded in a tight state without being misaligned.
[0037]
In addition, this invention is not limited to the said embodiment.
In the wrapping packaging apparatus 1 having the above-described configuration, the adhesive H is applied to the continuous film F0 by the adhesive application apparatus 6. However, even if it is performed in the process of transferring the sheet-like film F after cutting. Good.
[0038]
The first and second folding members 12a and 12b are moved toward and away from the downstream side at the same speed as the transfer speed of the stacked container K. However, the first and second folding members 12a and 12b do not move toward the downstream side but move toward the transfer direction. The configuration can be simplified by moving forward and backward only in the orthogonal direction.
[0039]
Although the example in which the rotating drum 35 and the pressing member 36 provided on the circumference thereof are both made of silicon rubber has been shown, the invention is not limited to this. For example, only the pressing member 36 is made of silicon rubber, and the rotating drum The 35 disk-shaped portions may be made of metal. The pressing member 36 may be made of rubber other than silicon rubber (for example, urethane rubber, butadiene rubber, etc.), synthetic resin, or the like, and can be formed of various materials having required elasticity.
Moreover, although the example in which the adhering means is configured by the rotating drum 35 and the plurality of pressing members 36 disposed on the circumference thereof is shown, the present invention is not limited to such an embodiment. For example, the sticking means is configured by a mechanism for moving the pressing member up and down, and the pressing member is moved up and down in accordance with the timing when the stacked container K is transferred, so that both ends of the sheet-like film are attached. You may make it do. In order to move the pressing member up and down, for example, a cylinder or a crank mechanism can be used.
[0040]
Although the example in which the positioning means for positioning the sheet-like film F placed on the stacking container K is the positioning roller 3e has been shown, the present invention is not limited to this. For example, instead of providing the positioning roller 3e, a sheet-like sheet placed on the uppermost surface of the stacking container K by providing a rail-like fixed guide member extending in the transfer direction of the stacking container K, a narrow traveling belt, or the like. The positioning means may be configured such that the film F is transported while being pressed by the fixed guide member or the narrow traveling belt.
[0041]
Although the stacked container K showed the example comprised by stacking four food containers, it is not restricted to this. The present invention can be applied even if the packaged item is a container other than a food container, and only one container or two or more arbitrary numbers are integrated in the vertical direction or the horizontal direction. Even if it is, it can be applied.
In addition to the above, it goes without saying that the present invention can be implemented in various modifications based on the knowledge of those skilled in the art.
[0042]
【The invention's effect】
According to the wrapping and packaging apparatus according to the present invention, when a sheet-like film is wound around a stacked container and packaged, no positional deviation occurs when both ends of the sheet-like film are stuck. Moreover, it can be packaged in a state where the sheet-like film is appropriately stretched along the periphery of the stacked container, and a packaged product having a good appearance can be obtained.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic view of an entire wrapping packaging apparatus according to an embodiment.
FIG. 2 is a schematic cross-sectional view taken along line AA of the banding packaging device in FIG.
FIG. 3 is an enlarged view of the vicinity of an adhesive application device and a cutting device of a banding packaging device.
4 is a schematic cross-sectional view taken along the line BB of the banding and packaging apparatus in FIG. 1. FIG.
FIG. 5 is a schematic view showing first and second folding members viewed from above.
6 is an enlarged view of the vicinity of the rotary drum 35 of the banding and packaging apparatus in FIG. 1. FIG.
FIG. 7 is an explanatory diagram of wrapping packaging.
FIG. 8 is an explanatory view for explaining band-wrapping by a conventional band-wrapping apparatus.
[Explanation of symbols]
1 ... Band-wrapping device
2 ... Container transport conveyor
2a ... Pushing member
3 ... Upper conveyor
3e Positioning roller
4a ... Rail member (support rail)
4b ... Support plate (support rail)
5 ... Film supply mechanism
6 ... Adhesive application device
7 ... Cutting device
8 ... Film transfer device
9 ... Film feeding mechanism
10 ... Film holding mechanism
11 ... Bending guide
12a: first folding member
12b ... 2nd folding member
31a, 31b ... friction member
32b ... Bent part
35… Rotating drum
36 ... pressing member
37 ... Notch
40 Discharge conveyor
K ... Stacking container
G ... Package
F0 ... Continuous film
F ... Sheet film
H… Adhesive

Claims (7)

A transport means for transporting a stacked container formed by stacking a plurality of containers on a support rail at predetermined intervals, and a continuous film drawn from the raw roll is cut into a predetermined size and each sheet A film supply means for supplying a sheet-like film to the uppermost position of the stacking container and a sheet-like film supplied to the stacking container along the left and right sides of the stacking container Bending means for folding the sheet-like film, folding means for folding both ends of the folded sheet-like film along the bottom of the stacking container, and attachment for attaching both ends of the folded sheet-like film A band wrapping device having means,
The film supply means includes an adhesive application device that applies an adhesive to at least a part of a portion corresponding to the banding polymerization margin of the sheet-like film,
The folding means includes a first folding member that folds one end of both end portions of the sheet-like film to a lower position of the support rail, and the other end after the one end is folded. A second folding member that is folded into a lower position of the support rail;
The affixing means is a pressure that affixes the both end portions of the sheet-like film by pressing the part where the adhesive is applied after the both end portions of the sheet-like film are folded into the lower position of the support rail. Comprising a member ,
The band folding packaging apparatus, wherein the first folding member and the second folding member are configured to fold both end portions of the sheet-like film at the same height . A transporting means for transporting a stacked container formed by stacking a plurality of containers on a support rail at predetermined intervals, and a continuous film drawn from the raw roll is cut into predetermined dimensions and each sheet A film supply means for supplying a sheet-like film to the uppermost surface position of the stacking container and a sheet-like film supplied to the stacking container along the left and right sides of the stacking container Folding means for folding the sheet-like film, folding means for folding both ends of the folded sheet-like film along the bottom of the stacking container, and attachment for attaching both ends of the folded sheet-like film A band wrapping device having means,
The film supply means includes an adhesive application device that applies an adhesive to at least a part of a portion corresponding to the banding polymerization margin of the sheet-like film,
The folding means includes a first folding member that folds one end of both ends of the sheet-like film to a lower position of the support rail, and the other end after the one end is folded. A second folding member that is folded into a lower position of the support rail;
The affixing means is a pressure that affixes the both end portions of the sheet-like film by pressing the part where the adhesive is applied after the both end portions of the sheet-like film are folded into the lower position of the support rail. Comprising a member,
The banding and packaging apparatus , wherein the pressing member is a member that protrudes from the outer periphery of the rotating body at equal intervals . The band hanging packaging device according to claim 1 or 2,
At least one of the first and second folding members is provided with a cutout portion at a location corresponding to the position of the adhesive applied to the sheet-like film. . The band hanging packaging device according to claim 1 or 2 ,
A band-wrapping packaging device, wherein a tip end portion of the second folding member is inclined downward. The band hanging packaging device according to claim 1 or 2 ,
The support surface for supporting the sheet-like film of the first folding member and the second folding member is provided with a friction member having a large frictional resistance with the sheet-like film and having a required thickness. A wrapping packaging device. The band hanging packaging device according to claim 1 or 2 ,
The transfer means includes an upper conveyor that transfers a stacked container having a sheet film supplied to the uppermost surface in a state of being sandwiched between support rails, and at least a part of the upper conveyor and the support rail A band-wrapping packaging device characterized in that the upper and lower intervals are smaller than the height of the stacked container . It is a banding packaging apparatus of Claim 6, Comprising:
The upper conveyor includes a traveling belt having a width smaller than the width dimension of the stacking container, and includes positioning means that abuts along the left and right edges of the uppermost surface of the stacking container. Packaging equipment.

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