JP2004277078A - Tab formation method for adhesive tape, tab formation mechanism of adhesive tape, tape reeling-out device using it, and sealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply form a tag capable of easily nipping and peeling an adhesive tape bonded on a corrugated fiberboard box on the adhesive tape. <P>SOLUTION: The adhesive tape provided with a fold in advance along a tape side by folding a side of the adhesive tape onto an adhesive face side is guided and runs while applying proper tension in a guide passage whose width is set to smaller width than tape width and which is opened like a channel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for forming a tab serving as a fingerhold when peeling off an adhesive tape applied to an adhesive tape used for various kinds of sealing, an apparatus for forming the tab, and a tape feeding apparatus using the same. And a sealing device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a tab serving as a finger when peeling off an adhered adhesive tape is formed by folding a tip end of an adhesive tape toward an adhesive surface side (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-49419
[Problems to be solved by the invention]
For example, when opening or dismantling a cardboard box for packing agricultural products, workers often wear gloves, but it is difficult to pick up the tab formed on the end of the tape with gloves on, and it is difficult to pick up gloves. Must be removed, which is annoying.
[0005]
In addition, when the tape is strongly adhered, the adhesive tape often breaks during the peeling, and it takes time and effort to turn up the completely cut tape cut end.
[0006]
The present invention has been made in view of such a point, and a method for forming a tab on an adhesive tape which can easily pick and peel an adhesive tape attached to a cardboard box or the like, and a tab forming apparatus therefor It is an object of the present invention to provide a tape feeding device and a sealing device which preferably utilize these.
[0007]
[Means for Solving the Problems]
The present invention has the following configuration to achieve such an object.
That is, the present invention according to claim 1 is a tab forming method for forming a tab which is a non-adhesive portion along a side of an adhesive tape,
The side of the adhesive tape is folded into the adhesive side, and the adhesive tape that has been pre-folded along the side of the tape is set to a width smaller than the width of the tape and a suitable tension is applied to the guide path that is opened in a groove shape. It is characterized by being guided while traveling.
[0008]
According to the first aspect of the present invention, when the adhesive tape travels on the narrow guide path, the pre-folded crease is extended to the subsequent tape portion by the tape tension and the guiding action of the side wall of the guide path. A continuous tab is formed along the side of the adhesive tape that has grown and passed the guide path.
[0009]
When the pressure-sensitive adhesive tape having tabs formed continuously along the side is attached to the object, the tabs are present over the entire length of the applied adhesive tape, so that the tabs can be easily picked and peeled. it can. Further, even if the adhesive tape breaks during the peeling, the tab of the remaining tape portion can be picked up to resume the peeling.
[0010]
The present invention according to claim 2 is a tab forming mechanism that forms a tab that is a non-adhesive portion along a side of the adhesive tape,
A folding guide roller is provided at a lower position in the tape feeding direction of the tension applying means for generating a tension by applying resistance to the conveyed adhesive tape, and a groove-shaped groove set to a width smaller than the tape width on the outer periphery of the folding guide roller. Forming a guide path, forming a tab forming section that continuously folds and forms tabs along the side of the tape by winding and guiding the fed adhesive tape around the guide path of the folding guide roller and running and passing it. It is characterized by having.
[0011]
(Operation / Effect) According to the tab forming mechanism according to the second aspect of the present invention, when the adhesive tape is wound around the folding guide roller, the fold previously formed on a part of the side of the tape is formed on the folding guide roller. It enters the guide path from the outer periphery, and then the adhesive tape is fed and run. Thereby, in the folding guide roller, the fold grows to the following tape portion by the tape tension and the guiding action of the side wall of the guiding path, and a continuous tab is formed along the side of the adhesive tape passing through the folding guiding roller. You. Therefore, the tape setting operation is simple and the handling is excellent.
[0012]
According to a third aspect of the present invention, there is provided a tape feeding device including the tab forming portion according to the second aspect,
Tape supply means for feeding out an adhesive tape,
Tape transport means for transporting the adhesive tape fed from the tape supply means,
A tape cutting means for cutting the adhesive tape at a predetermined position is provided, and the tab forming section is provided between the tape supply means and the tape transport means.
[0013]
(Function / Effect) According to the invention of claim 3, the adhesive tape with the side tab is taken out by a required length by conveying and cutting the adhesive tape as needed while continuously forming the tab along the side. Can be. Therefore, it can be conveniently used for packing and sealing various articles.
[0014]
The present invention according to claim 4 is a sealing device including the tab forming portion according to claim 2,
Conveying means for conveying the cardboard box before box making along a constant conveying path in the front-rear direction,
Closing means for attaching an adhesive tape to the cardboard box and closing the flap,
Tape cutting means for cutting the adhered adhesive tape at a predetermined position, and the tab forming portion is provided in a tape feeding and conveying path.
[0015]
According to the fourth aspect of the present invention, the adhesive tape is conveyed while continuously forming tabs along the side edges, attached to the cardboard box, the flap is closed, and the cardboard box is cut in place. Sealing can be performed. In addition, since the adhesive tape thus applied has tabs over its entire length, the tape can be easily picked up when the cardboard box is opened or disassembled, and as a result, the box is opened and used. The tape can be easily peeled at the time of disassembling the box later.
[0016]
Further, the present invention according to claim 5 is characterized in that the tape cutting means has a configuration in which a rotating round blade is provided at the tip of a swing arm, and swings the tape close to the adhesive tape to which the swing arm is attached. , The rotary round blade rotates to act on the adhesive tape.
[0017]
(Function / Effect) According to the fifth aspect of the present invention, since the rotating circular blade cuts the adhesive tape while rotating, the tab portion where the tape is double-bonded and the cutting resistance is increased can be easily cut. . In addition, since the tape can be cut straight in the width direction of the tape, it is possible to seal the tape with a clean cut end adhesive tape. Furthermore, when peeling off the adhesive tape cut and pasted with a conventional saw blade, it is possible to avoid a peeling defect that has occurred due to tearing in the tape longitudinal direction from a valley portion of the cut surface.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, some embodiments of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 shows a tape feeding device configured as a desktop type. This tape feeding device includes a main body case 1, a tape supply unit 2 provided at a rear portion thereof, a tape transport mechanism 3 housed in the main body case 1, a tape cutting mechanism 4, and the like.
[0020]
The tape supply unit 2 has a structure in which a bobbin 6 is rotatably mounted on an upper end of a stay 5 erected at a rear portion of the main body case 1, and a tape reel TR is fitted and fixed to the bobbin 6 from the side. Has become. When the adhesive tape T is fed from the tape reel TR, a rotational resistance is applied to the bobbin 6 so that an appropriate tension is provided.
[0021]
The tape transport mechanism 3 is configured to guide and hold the adhesive tape T between the delivery roller 7 and the holding roller 8 and to deliver the adhesive tape T to a take-out port 9 provided on the front surface of the main body case 1. The adhesive tape T is transported by the length specified by the operation unit 10 of the case 1.
[0022]
The tape cutting mechanism 4 is configured to move the cutting blade 11 downward to cut the adhesive tape T, and the cutting operation is performed when the feeding of a predetermined length by the tape transport mechanism 3 is completed.
[0023]
A tab forming section A is provided between the tape supply section 2 and the tape transport mechanism 3. The tab-shaped portion A is provided with a folding guide roller 12 for winding and guiding the adhesive tape T fed from the tape supply section 2 from the non-adhesive surface side.
[0024]
As shown in FIGS. 2 and 4, the folding guide roller 12 is mounted on a support shaft 13 horizontally mounted on the side surface of the stay 5 so as to freely rotate. A groove-shaped guide path 14 having a width smaller than that of the guide path 14 is formed to be recessed.
[0025]
The function of the tab forming portion A will be described below. At the time of tape setting, the adhesive tape T fed from the tape supply unit 2 is wound around the folding guide roller 12 and guided to the tape transport mechanism 3. In this case, one side of the adhesive tape T is folded to the adhesive surface side to form a fold, and the tape portion reduced in width by the formation of the fold is engaged with the guide path 14 of the folding guide roller 12. I do.
[0026]
When the power is turned on in this state and the tape transport mechanism 3 is operated to take out the adhesive tape T toward the outlet 9, the adhesive tape T in the tab forming portion A is applied with an appropriate tension. Travels through the guide path 14 of the folding guide roller 12, and the fold grows to the subsequent tape portion due to the tape tension and the guiding action of the side wall of the guide path 14, and the adhesive tape T that has passed through the folding guide roller 12 The tabs g continuous along the side of are bonded and formed.
[0027]
Thereafter, in the tab forming section A, the tab g is continuously formed on the side of the tape along with the tape feeding and running, and the adhesive tape T which is cut to a desired length and taken out from the outlet 9 is shown in FIG. In this way, it has a continuous tab.
[0028]
When the tape is replaced with an adhesive tape T having a different width, or when the width of the tab g is changed, the guide path 12 is replaced with a folding guide roller 12 having a different width.
[0029]
As shown in FIG. 5, the folding guide roller 12 is composed of a roller body 12a and a pair of flanges 12b fitted externally to the roller body 12a and fixed with set screws 12c, and a guide path for forming a tab between the two flanges 12b. 14 can also be formed. In this case, since the width of the guide path 14 can be changed by adjusting the position of the flange 12b, the width of the guide path 14 can be adjusted according to the tape width or the tab width without requiring roller replacement.
[0030]
6 to 14 show a sealing device according to the present invention.
[0031]
This sealing device is used for box making of a cardboard box, and as shown in FIG. The transport belts 23a and 23b, the inner flap folding guide 24, the outer flap folding guide 25, and the tape attaching mechanism 26 are provided.
[0032]
As shown in FIG. 15, the transfer table 22 places a cardboard box W with the bottom face upward and forms a transfer path F that moves horizontally and linearly in the front-rear direction, and is provided at the upper end of the machine table 21. The height is adjustable by rotating the adjustment handle 27, and a carry-in table 22a is connected to a front end thereof and a carry-out table 22b is detachably connected to a rear end thereof.
[0033]
The left and right transport belts 23a, 23b are stretched between a pair of pulleys vertically supported on the front and rear sides of the transport frame 29, and are independently driven by a pair of motors 30a, 30b disposed above the rear. Is done. Further, the left and right transfer frames 29 are reciprocally moved left and right by rotating the adjustment handle 31 provided at the upper rear of the machine base 21 to adjust the distance between the left and right transfer belts 23a and 23b to appropriately hold the cardboard box W. It is configured so that it can be transported.
[0034]
The inner flap folding guide 24 is made of a plate material having a curved front end edge, the bottom surface of the inner flap is directed upward on the carrier table 22, and the inner flap in front of the cardboard box W placed and supplied with the rear inner flap fb manually folded. fa (see FIG. 15) is configured to be guided to be folded inward.
[0035]
The outer flap folding guides 25 are made of cantilevered rods, respectively, and hold the left and right outer flaps fc and fd (see FIG. 15) of the cardboard box W conveyed while being sandwiched between the two conveyor belts 23a and 23b. The space is narrowed in a V-shape along the transport path F so as to be guided inward and folded inward, and is arranged so as to be inclined forward and downward.
[0036]
As shown in FIG. 7, the adhesive tape applying mechanism 26 includes a tape reel TR around which the adhesive tape T is wound, a guide roller 32, a reverse rotation preventing guide roller 33, and a front attaching roller 34 located before and after the transport path F. A rear attaching roller 35, a tape cutting mechanism 36, and the like are provided. The front and rear attaching rollers 34 and 35 are pivotally supported by a frame plate 37 so as to be able to pivot up and down around fulcrums P1 and P2. And 39 are freely rotatably mounted at the free ends. The tape cutting mechanism 36 is provided at the free end of a swing arm 40 supported by the frame plate 37 so as to be able to swing up and down about a fulcrum P3. The detailed structure will be described later.
[0037]
The two swing arms 38 and 39 are interlocked and connected by a link 41, and vertically synchronize with each other by rotating in opposite directions, and both swing arms are extended by a spring 42 extending between the frame plate 37 and the swing arm 39. 38, 39 are urged such that their free ends protrude into the transport path F of the cardboard box W. A guide roller 43 for holding the adhesive tape T guided by the guide rollers 32, 33 and a tape holder 44 are provided near the free end of the swing arm 38, and the adhesive surface of the tip of the adhesive tape T is conveyed. It is guided and held on the front surface of the front attaching roller 34 in a posture toward the upper side (right side in the figure) of the path F. The swing arm 40 is also urged by a spring 45 extending over the frame plate 37 so that its free end protrudes into the movement locus of the lateral corner of the cardboard box W.
[0038]
The detailed structure of the tape cutting device 36 will be described with reference to FIGS. A bracket 51 is connected to the free end of the swing arm 40 by bolts 52 so that the position can be adjusted in the front and rear directions. A cutter holding member 53 is connected to the front surface of the bracket 51 by bolts 55 via spacers 54. As shown in FIG. 10, two rotating round blades 56 arranged in the left-right direction (tape width direction) are supported on the back surface of the cutter holding member 53 via a rotation support shaft 57 so as to freely rotate.
[0039]
A movable member 58 made of a wide plate material is provided on the front side of the cutter holding member 53, and a vertical guide rail 60 bolted to the inner surface of the movable member 58, and a plate is provided on the front surface of the cutter holding member 53. The movable member 58 is supported so as to be slidable in the vertical direction with respect to the cutter holding member 53 by fitting the slider 62 connected by the screw 61. An upper stopper 63a and a lower stopper 63b are provided at the upper and lower ends of the inner surface of the movable member 58. When the upper stopper 63a abuts on the upper end of the slider 62, the sliding down of the movable member 58 due to its own weight is restricted. In addition, the lower stopper 63b abuts on the lower end of the slider 62, whereby the upper sliding limit of the movable member 58 is restricted.
[0040]
A pinion gear 64 is integrally formed at an end of the rotation support shaft 57, and a rack gear 65 meshing with the pinion gear 64 is connected and fixed to the inner surface of the movable member 58 with bolts 66. Is vertically slid with respect to the cutter holding member 53, and the rack gear 65 is relatively moved with respect to the pinion gear 64, whereby the pinion gear 64 is rotated and the rotary round blade 56 is driven to rotate. In this case, the left and right rotary round blades 56 are driven to rotate in opposite directions.
[0041]
A guide roller 67 is provided on one side surface of the movable member 58. As will be described later, a roller receiving member 68 is attached to the frame plate 37 so as to be positioned on the vertical movement locus of the guide roller 67. Is fixed.
[0042]
A guide member 69 is connected to a lower end of the swing arm 40 by a bolt 70 so that the guide member 69 can be adjusted back and forth.
[0043]
The configuration of each part of the box making device is as described above, and the operation of the adhesive tape attaching mechanism 26 is as follows.
[0044]
(1) As shown in FIG. 7, in the initial state in which the cardboard box W does not arrive, the front attaching roller 34, the rear attaching roller 35 supporting the adhesive tape T, and the tape cutting device 36 are respectively provided on the transport path of the cardboard box W. It is in the position where it entered F.
[0045]
In this case, in the tape cutting device 36, since the swing arm 40 descends greatly, the guide roller 67 is received and supported by the roller receiving member 68, so that the movable member 58 is relatively moved with respect to the cutter holding member 53. It has been slid up.
[0046]
(2) When the cardboard box W comes into contact with the front sticking roller 34, the front sticking roller 34 retreats upward against the spring 42 while the tip part ta of the adhesive tape T is stuck on the front surface of the cardboard box W. . In addition, the rear attaching roller 35 also moves up and retreats accordingly.
[0047]
(3) When the cardboard box W further advances, the front affixing roller 34 rides on the cardboard box W as shown in FIG. 8 and applies the adhesive tape T along the butting edges of the left and right outer flaps fc and fd. Paste it. At this time, the rear sticking roller 35 that has moved up and down is also on the moving path of the cardboard box W, and the swing arm 40 is pushed up against the spring 45 by the contact with the cardboard box W, and the tape cutting device 36 is moved. It is retracted above the adhesive tape T.
[0048]
In this case, since the fixed roller receiving member 65 is relatively lowered with respect to the tape cutting device 36, the movable member 58 is slid to the lower limit.
[0049]
(4) As shown in FIG. 9, even if the cardboard box W moves further forward and the front attaching roller 34 comes off the rear end of the cardboard box W, the rear attaching roller 35 is still positioned on the cardboard box W. During the interval, the front affixing roller 34 is held at the raised position, and the adhesive tape T protruding from the rear end of the cardboard box W is in a tension state. Here, when the guide member 69 attached to the free end of the swing arm 40 so as to be adjustable back and forth comes off from the rear end of the cardboard box W, the tape cutting device 36 is lowered by the spring 45 and tensioned as described above. The existing adhesive tape T is cut.
[0050]
In this case, in the tape cutting device 36, when the swing arm 40 descends greatly, the movable member 58 is relatively moved with respect to the cutter holding member 53 while the guide roller 67 is received and supported by the roller receiving member 68. The left and right rotating round blades 56 are pressed against the adhesive tape T while being driven to rotate in opposite directions by this sliding. After starting to bite into T, a straight line cut in the tape width direction is performed instantaneously.
[0051]
The tape cutting position can be arbitrarily changed and adjusted by adjusting the projecting length of the guide member 69 provided at the free end of the swing arm 40.
[0052]
(5) When the cardboard box W is further advanced, the rear application roller 35, which is being urged downward, relatively moves while being pressed and contacted from the upper surface to the rear surface of the cardboard box W, and the rear end portion of the adhesive tape T The tb is wrapped around the rear surface of the cardboard box W and affixed, and as shown in FIG.
[0053]
As described above, one adhesive tape sticking operation is completed, the operation returns to the initial state, and preparations are made for arrival at the next box.
[0054]
In the sealing device configured and operated as described above, according to the present invention, the tab forming portion A that forms the tab g along one side of the adhesive tape T is provided in the tape conveying path to the front attaching roller 34 in the tape conveying path. Provided.
[0055]
That is, also in this example, the bobbin 47 on which the tape reel TR is mounted is provided with rotational resistance, and the guide roller 33 provided in the tape transport path to the front attaching roller 34 has a width smaller than the tape width. The folding guide roller is provided with a set groove-shaped guide path 48 on the outer periphery. When the adhesive tape T travels through the guide path 48 of the folding guide roller 33 with tension, the tape side is formed by the above-described action. The tab g along the side is continuously folded and formed, and the adhesive tape T with the tab is attached to the cardboard W.
[0056]
The present invention is not limited to the above embodiment, but can be modified as follows.
[0057]
(1) In each of the above embodiments, the tab g is formed only along one side of the adhesive tape T. However, the tab g can be formed along both sides of the adhesive tape T. .
[0058]
(2) In the above-described embodiment, a resistance is given to the rotation of the tape reel TR as a tension applying means for giving a resistance to the tape feeding-out travel and generating a tension in a position above the folding guide roller. The guide roller may be provided above the folding guide roller.
[0059]
【The invention's effect】
As apparent from the above description, according to the present invention, the following effects can be expected.
[0060]
It is possible to easily obtain an adhesive tape with a continuous tab, which can easily and easily peel off the tape after pasting (claim 1). Further, the tab forming mechanism can preferably implement the tab forming method, and it is only necessary to wind and engage the pre-folded adhesive tape on the guide path formed on the outer periphery of the folding guide roller, The tape setting operation is simple and the handling is excellent (claim 2).
According to the tape feeding device, the adhesive tape with the continuous tab can be cut to a desired length and taken out, so that it can be conveniently used for packing and sealing various articles. Furthermore, according to the sealing device, the cardboard box can be sealed with the continuous tab-attached adhesive tape, so that the tape can be easily peeled when the box is opened or the box is disassembled after use.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a tape feeding device.
FIG. 2 is a front view of a tab forming unit.
FIG. 3 is a perspective view showing one end of an adhesive tape with a tab.
FIG. 4 is a perspective view of a folding guide roller.
FIG. 5 is a front view in which a part of a folding guide roller of another embodiment is longitudinally sectioned.
FIG. 6 is an overall perspective view of a sealing device used for producing a cardboard box.
FIG. 7 is a side view of the tape attaching mechanism.
FIG. 8 is a side view showing a tape attaching process.
FIG. 9 is a side view showing a tape attaching process.
FIG. 10 is a rear view of the tape cutting device.
FIG. 11 is a plan view in which a part of the tape cutting device is cut away.
FIG. 12 is a side view of the tape cutting device at the evacuation position.
FIG. 13 is a side view of the tape cutting device that is being lowered.
FIG. 14 is a side view of the tape cutting device in a lowered position.
FIG. 15 is a perspective view of the cardboard box before the sealing process as viewed from the bottom side.
FIG. 16 is a perspective view of the cardboard box after the sealing process as viewed from the bottom side.
[Explanation of symbols]
12 Folding guide roller 14 Guide path A Tab forming part g Tab T Adhesive tape

Claims (5)

A tab forming method for forming a tab that is a non-adhesive portion along a side of the adhesive tape,
The side of the adhesive tape is folded into the adhesive side, and the adhesive tape that has been pre-folded along the side of the tape is set to a width smaller than the width of the tape and a suitable tension is applied to the guide path that is opened in a groove shape. A method for forming a tab of an adhesive tape, wherein the tab is guided while traveling. A tab forming mechanism that forms a tab that is a non-adhesive portion along a side of the adhesive tape,
A folding guide roller is provided at a lower position in the tape feeding direction of the tension applying means for generating a tension by applying resistance to the conveyed adhesive tape, and a groove-shaped groove set to a width smaller than the tape width on the outer periphery of the folding guide roller. Forming a guide path, forming a tab forming section that continuously folds and forms tabs along the side of the tape by winding and guiding the fed adhesive tape around the guide path of the folding guide roller and running and passing it. A tab forming mechanism for an adhesive tape. It is a tape feeding device provided with the tab formation part of Claim 2, Comprising:
Tape supply means for feeding out an adhesive tape,
Tape transport means for transporting the adhesive tape fed from the tape supply means,
A tape feeding device comprising: a tape cutting unit that cuts an adhesive tape at a predetermined position; and the tab forming unit is provided between a tape supply unit and a tape conveyance unit. It is a sealing device provided with the tab formation part of Claim 2, Comprising:
Conveying means for conveying the cardboard box before box making along a constant conveying path in the front-rear direction,
Closing means for attaching an adhesive tape to the cardboard box and closing the flap,
A sealing device comprising: a tape cutting means for cutting the applied adhesive tape at a predetermined position; and the tab forming portion being provided in a tape feeding and conveying path. The sealing device according to claim 4, wherein
The tape cutting means has a configuration in which a rotating round blade is provided at a tip of a swing arm, and the rotating round blade rotates in conjunction with swinging the swing arm closer to the adhesive tape to which the swing arm is attached. A sealing device configured to act on the adhesive tape.

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