JP2008001476A - Overlapped part forming mechanism for adhesive tape and tape cutter equipped with this - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overlapped part forming mechanism for an adhesive tape capable of easily and certainly forming an overlapped part for peeling off the tape on an edge of the tape. <P>SOLUTION: The edge 15 of the tape T is bent to an adhesion surface Ta side at a predetermined angle by partially giving, by an annular plate 18, strong tension to the tape T traveling in the state in which tension is generated. The above edge 15 is folded to the adhesion surface Ta side by giving a curve making a non-adhesion surface Ta as an inner side to the tape T by a pressing roller 7 as a curve giving roller to form the overlapped part 16. A restriction member 19 has a ridgeline 40 for restricting return of the folded part of the edge on the midway of folding. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an overlapping portion forming mechanism of an adhesive tape and a tape cutter provided with the mechanism.

Adhesive tapes are used for various purposes, but are often used for temporary fixing. For example, there is a relatively wide (30-40 mm) tape used for packaging cardboard boxes.
In addition, when selling food at supermarkets and other places, temporarily fix the lid on the food packaging container, or temporarily fix the bag containing the seasoning on the outer surface of the food packaging container Therefore, there is an adhesive tape having a relatively narrow width (width dimension is about 10 mm).

When peeling off these adhesive tapes, the end of the tape is scraped up with a nail or the like to form a pinch allowance, which is then picked up with a finger and peeled off.
However, the work of causing the picking allowance was very troublesome and troublesome.
In view of this, a tape cutter has been proposed that forms a superposed portion that becomes a non-adhesive portion by folding back to the adhesive surface side with a predetermined width on the side edge of the tape (see, for example, Patent Documents 1 and 2).
JP 2004-331296 A JP 2004-315203 A

Since the tape cutter has a structure in which the running tape is slidably contacted with the inclined surfaces of a plurality of blocks, there is a drawback that the structure is complicated and malfunction is likely to occur.
Accordingly, an object of the present invention is to provide an overlapping portion forming mechanism of an adhesive tape and a tape cutter including the same, which can easily and reliably form a overlapping portion for tape peeling.

  In order to achieve the above object, the present invention provides at least one edge parallel to the tape running direction, wherein the tape having an adhesive surface and a non-adhesive surface on the front and back is arranged in a tape running path where the tape runs. The overlapping part forming mechanism of the adhesive tape for forming the overlapping part to be a non-adhering part on the part, and by pressing a part away from the edge of the tape by a predetermined distance in the tape width direction, A tension applying member that applies a relatively strong tension to the portion, and starts bending the edge portion to the bonding surface side at a predetermined angle from the portion, and an edge portion bent at the predetermined angle by the action of the tension applying member The tape having the above, provided with a curve imparting roller for forming the overlapped portion by folding the edge to the non-adhesive surface side by giving a curve with the non-adhesive surface inside, Adhesion Providing overlapping portion formation mechanism of the-loop (claim 1).

  In the present invention, a strong tension is partially applied to the tape running in a state where tension is generated, and the edge of the tape is bent at a predetermined angle toward the adhesive surface. By giving the tape a curve with the non-adhesive surface on the inside, the edge of the tape bent at a predetermined angle can be folded back to the adhesive surface side to form a superposed portion. By using a simple structure of the tension applying member and the bending applying roller, the overlapping portion can be easily and reliably formed. In particular, the edge that has already formed the overlapped portion on the bend imparting roller works to promote the folding of the edge of the tape that has not yet been folded, so that the operation becomes more reliable. In this way, when it is necessary to peel off the tape after the tape having the overlap portion formed on the target surface is used after being used, the tape can be removed by picking the overlap portion of the edge with a finger. Can be easily and quickly peeled off.

The tension applying member may include a rotatable annular plate whose outer periphery is pressed against the adhesive surface of the tape (claim 2). In this case, the edge of the tape can be easily bent at a shallow angle by simply pressing the outer periphery of the rotatable annular plate against the running tape.
Moreover, it is arrange | positioned coaxially with the said annular plate, and the guide roller which guides an adhesion surface is provided, The outer diameter of the said annular plate may be larger than the outer diameter of a guide roller. In this case, it is possible to reliably apply a partial strong tension to the tape by the annular plate while guiding the running of the tape with the guide roller.

Further, if the angle formed by the linear region of the tape before and after the guide roller is smaller than 180 degrees (Claim 4), it is possible to reliably apply tension to the running tape.
In addition, it is preferable if a regulation member is provided that regulates that the edge of the tape in the middle of folding is returned in a direction opposite to the direction in which the tape is folded between the tension applying member and the bending applying roller. 5). In this case, even if the tension of the running tape is slightly changed, the edge of the tape can be reliably folded back.

  The present invention is also a tape cutter for attaching and cutting the adhesive surface of a tape having an adhesive surface and a non-adhesive surface on the front and back to a target surface, and freely rotating the tape roll around which the tape is wound In order to attach the adhesive surface of the tape fed from the roll to the target surface, a pressing roller for pressing the non-adhesive surface of the tape, and the overlapping portion forming mechanism are provided. A tape cutter is provided (claim 6).

Preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a tape cutter having an adhesive tape overlapping portion forming mechanism according to an embodiment of the present invention. Referring to FIG. 1, a tape cutter 1 includes a frame 2, and a cylindrical roll support portion 5 that rotatably supports a core 4 of a tape roll 3 is provided on the frame 2. Further, a cutter 6 having a serrated blade 6 a for cutting the tape T is fixed to the frame 2.

Further, the frame 2 is supported by a pressure roller 7 as a bending roller that presses the adhesive surface Ta of the tape T against the target surface, and is rotatably supported between the tape roll 3 and the pressure roller 7. A guide roller 8 for guiding the traveling of the tape T while applying a predetermined tension to the traveling tape T is rotatably supported.
Further, a plate-like cover 9 that is curved in an arc shape is supported on the frame 2 so as to be rotatable around one end 9a so as to cover the upper portion of the tape roll 3 supported by the roll support portion 5. .

As shown in FIG. 2, the frame 2 has a rear plate 10 extending from the rear edge of the cylindrical roll support 5 to the cutter 6 side, and an obliquely inclined upward extending from the side edge of the rear plate 10 to the front. A side plate 11 and a front plate 12 extending downward from the front edge of the oblique side plate 11 are provided.
The cutter 6 is fixed along the oblique side plate 11. The pressing roller 7 is made of a synthetic rubber sleeve, and is rotatably supported by a cylindrical support shaft 13 spanned between the front plate 12 and the rear plate 10.

Further, the front plate 12 and the rear plate 10 are provided with pivots 14 formed of cylindrical protrusions that rotatably support the cover 9.
Referring to FIG. 1, a tape T held by a tape cutter 1 has an adhesive surface Ta and a non-adhesive surface Tb on the front and back sides.
A feature of the present embodiment is that a superposition part forming mechanism 17 for forming a superposition part 16 to be a non-adhesion part is provided on the edge part 15 of the tape T parallel to the tape running direction X1. is there.

Referring to FIG. 3, the overlapping portion forming mechanism 17 regulates the posture of the tape T that has passed through the annular plate 18 serving as a tension applying member, the curving imparting roller shared by the pressing roller 7, and the annular plate 18. And a claw-like regulating member 19 for the purpose.
The guide roller 8 is composed of a metal sleeve, and a knurled or other irregularity 8b is formed on the outer peripheral surface 8a thereof. This is to prevent the tape T from sticking to the guide roller 8 and causing malfunction when the guide roller 8 guides the adhesive surface Ta of the tape T.

With reference to FIG. 4 which is an exploded perspective view and FIG. 5 which is a cross-sectional view, the guide roller 8 is loosely fitted to a support shaft 20 fixed to the rear plate 10 of the frame 2. A fixing screw 23 inserted through the screw insertion hole 21 and the nut 22 of the restricting member 19 is screwed into a screw hole 24 that is a center hole of the support shaft 20.
The outer periphery of the nut 22 includes, for example, a tool engaging portion 25 having a hexagonal shape, and a cylindrical portion 26 into which the annular plate 18 is fitted with play in the radial direction and the axial direction. That is, the outer diameter of the cylindrical portion 26 is larger than the inner diameter of the annular plate 18, and the length of the cylindrical portion 26 is larger than the thickness of the annular plate 18.

  A washer 27 is fitted to the fixing screw 23, and the restricting member 19 is held between the head 28 of the fixing screw 23 and the nut 22 by sandwiching the mounting seat 29 of the washer 27 and the restricting member 19. And the nut 22 are integrally fixed. Further, the restriction member 19 and the nut 22 are integrally fixed to the support shaft 20 by the tip of the fixing screw 23 penetrating the nut 22 being screwed into the screw hole 24 of the support shaft 20.

  The guide roller 8 can apply tension to the tape T running between the tape roll 3 and the pressing roller (bending roller) 7 even when the tape remaining amount of the tape roll 3 becomes the smallest. Laid out in position. Specifically, as shown in FIG. 6, which is a schematic diagram, at least a part of the outer peripheral surface 8 a of the guide roller 8 has the outer peripheral surface 3 a of the tape roll 3 and the pressing roller 7 when the tape amount is the smallest. It is arranged on the cover 9 side with respect to the common tangent line Z of the outer peripheral surface 7a.

The angle θ formed by the linear regions 51 and 52 of the tape T before and after the guide roller 8 is smaller than 180 degrees. A more preferable range of the angle θ is 60 to 130 degrees. Further, a more preferable range of the angle θ is 80 to 120 degrees.
The annular plate 18 as a tension applying member is rotatably supported by the cylindrical portion 26 of the nut 22 fixed to the support shaft 20 as described above. The guide roller 8 and the annular plate 18 are arranged coaxially, and the diameter of the annular plate 18 is larger than the diameter of the guide roller 8.

  For this reason, as shown in FIG. 7, the outer peripheral surface 18 a of the annular plate 18 is relatively stronger than the outer peripheral surface 8 a of the guide roller 8, and comes into contact with the adhesive surface Ta of the tape T. Yes. The annular plate 18 applies a relatively strong tension to the portion 30 by pressing the portion 30 that is a predetermined distance away from the edge 15 of the tape T before being bent in the tape width direction Y1, thereby starting the portion 30. As described above, the edge 15 functions to be bent at a predetermined angle toward the bonding surface Ta.

  The pressing roller 7 serving as a bending imparting roller imparts a curvature with the non-adhesive surface Tb on the inside to the tape T having the edge 15 bent to the adhesive surface Ta side at a predetermined angle by the action of the annular plate 18. As a result, the edge portion 15 is folded back toward the bonding surface Ta to form the overlapping portion 16. The pressure roller 7 serving as a curvature imparting roller is bonded along the target surface 31 on which the adhesive tape T is attached. The bonding surface Ta sticks to the target surface 31, and the overlapping portion 16 that is a non-bonding portion does not stick to the target surface 31.

  Next, the regulating member 19 will be described with reference to FIG. FIG. 8A is a perspective view of the regulating member 19. 8B is a plan view of the restricting member 19 (corresponding to a view taken in the direction of arrow b in FIG. 8A), and FIG. 8C is a bottom view of the restricting member 19 in FIG. 8A. FIG. 8D is a side view of the restricting member 19 [corresponding to the view of arrow d in FIG. 8A]. The restricting member 19 has a curved claw-shaped block shape, and the restricting member 19 has a substantially triangular shape in plan view and bottom view. The mounting seat portion 29 is a flat annular plate portion formed by counterbore. Further, the regulating member 19 has a straight or slightly curved ridge 40 that is close to the tape T. The restricting member 19 serves to prevent the edge of the tape being folded back from being returned by the ridgeline 40.

As shown in FIGS. 1 and 3, the regulating member 19 is arranged along a tape traveling path between the annular plate 18 as a tension applying member and the pressing roller 7 as a bending applying roller. The restricting member 19 functions to restrict the edge of the tape T that is being folded back from being returned in a direction opposite to the direction in which the tape T is folded back.
FIG. 9A is a schematic view of the pressing roller 7, the guide roller 8, the annular plate 18, and the ridge line 40 viewed from a direction orthogonal to a plane including the axis 71 of the pressing roller 7 and the axis 81 of the guide roller 8. . FIG. 9B is a schematic view of the pressing roller 7, the guide roller 8, the annular plate 18, and the ridgeline 40 viewed along the axis 71 of the pressing roller 7.

As shown in FIG. 9 (a), when the tape T having a width of Wmm is folded back from the edge 15 before the folding with a folding amount of Dmm, the annular plate 18 is a part of the tape T from the edge 15 to Dmm. Is pressed.
As shown in FIG. 9B, it is preferable that the end 41 of the ridge line 40 reaches the vicinity of the contact 61 between the tape T and the pressing roller 7 spanned between the rollers 7 and 8. The end 41 of the ridge 40 may extend beyond the contact 61 so as to form an arc concentric with the outer peripheral surface 7 a of the pressing roller 7.

  As shown in FIG. 9A, the ridge line 40 of the regulating member 19 is inclined with respect to the axis 71 of the pressing roller 7. It is necessary and sufficient if the end 41 of the ridge line 40 can cover the edge 15 'of the tape T after being folded back by at least 1 mm, and at most an amount corresponding to Dmm corresponding to the folding amount. That is, the end 41 of the ridge line 40 only needs to be at a position in the range of (D + 1) mm to (2 × D) mm from the edge 15 of the tape T before folding. For example, when the folding amount D for forming the overlapping portion 16 is 5 mm, the terminal end 41 is arranged at a distance in the range of 6 to 10 mm from the edge 15 of the tape T before folding in the tape width direction Y1. I'm counting on you.

9A, the portion 42 where the ridgeline 40 intersects the edge of the tape T in the middle of folding may be any position on the tape travel path between the pressing roller 7 and the guide roller 8. However, it is preferable that the intersecting portion 42 is disposed downstream of the central position 62 of the tape travel path between the rollers 7 and 8 in the tape travel direction X1.
According to the present embodiment described above, a strong tension is partially applied to the tape T that is running in a tensioned state so that the edge 15 of the tape T is bonded to the adhesive surface Ta at a predetermined angle. Bend to the side. By giving the tape T a curve with the non-adhesive surface Ta inside, the edge 15 of the tape T folded at a predetermined angle is folded back to the adhesive surface Ta side, and the adhesive surfaces Ta are bonded to each other. The portion 16 can be formed.

The overlapping portion 16 can be easily and reliably formed by a simple structure using the annular plate 18 for applying tension and the bending applying roller shared by the pressing roller 7.
In particular, since the edge that has already formed the overlapping portion 16 on the pressure roller 7 serving as a bending roller acts to promote the folding of the edge of the tape T that has not yet been folded, the operation is more reliable. Become. In this way, after the tape T having the overlapping portion 16 formed on the edge portion is attached to the target surface 31 and used, when the tape T needs to be peeled off, the overlapping portion 16 is picked with a finger to T can be easily and quickly peeled off.

The present invention is not limited to the above-described embodiment. For example, the annular plate 18 and the guide roller 8 may be connected so as to be integrally rotatable, or both may be integrally formed of a single material. Also good.
In the above embodiment, the annular plate 18 is supported by the support shaft 20 of the guide roller 8. However, the stay may be fixed to the frame 2 and the annular plate may be rotatably supported by the stay.

In the above embodiment, the curving roller is also used as the pressing roller 7. However, the present invention is not limited to this, and a curving roller may be provided separately from the pressing roller 7. In this case, the terminal end 41 of the ridge line 40 of the regulating member 19 only needs to reach a position close to the bend imparting roller.
Furthermore, the overlapping portion forming mechanism 17 of the present invention is not limited to a tape cutter, and can be applied to any traveling route as long as the traveling route is a tape traveling route in which the tape travels with a predetermined tension. Can do.

It is a schematic perspective view of the tape cutter containing the superposition | polymerization part formation mechanism of the adhesive tape of one embodiment of this invention. It is a schematic perspective view of the tape cutter of the state which removed the tape roll. It is a general | schematic expansion perspective view of the superposition | polymerization part formation mechanism. It is a disassembled perspective view of the superposition | polymerization part formation mechanism. It is sectional drawing of the principal part of a superposition | polymerization part formation mechanism. It is a schematic diagram of a tape roll, a guide roller, and a press roller. It is a typical perspective view for demonstrating operation | movement of the superposition | polymerization part formation mechanism. It is the schematic of a control member, (a) is a perspective view, (b) is a top view, (c) is a bottom view, (d) has shown the side view. (A) And (b) is a schematic diagram for demonstrating the operation | movement and layout of a superposition | polymerization part formation mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tape cutter 2 Frame 3 Tape roll 5 Roll support part 6 Cutter 7 Pressing roller (curvature imparting roller)
8 Guide rollers 7a, 8a Outer peripheral surface T Tape Ta Adhesive surface Tb Non-adhesive surface X1 Tape running direction Y1 Tape width direction 15 (Tape) edge 15 '(Tape after folding) 16 Superposition part 17 Superposition part formation Mechanism 18 Annular plate (tensioning member)
18a Peripheral surface 19 Restricting member 30 Portion 31 (Distance away from tape edge in tape width direction) Target surface 40 Edge 41 End 51, 52 Linear region θ Angle formed by linear region W Tape width D Folding amount

Claims (6)

A tape having an adhesive surface and a non-adhesive surface on the front and back is disposed in a tape travel path that travels in a state where a predetermined tension is generated, and a superposed portion that becomes a non-adhesive portion is provided on at least one edge parallel to the tape travel direction A mechanism for forming an overlap portion of an adhesive tape for forming,
By pressing a portion of the tape that is a predetermined distance away from the edge in the tape width direction, a relatively strong tension is applied to the portion, and the edge is set at a predetermined angle toward the bonding surface with the portion as a starting point. A tension applying member that is bent at
A tape having an edge bent at the predetermined angle by the action of a tension applying member is given a curve with the non-adhesive surface inside, thereby folding the edge toward the non-adhesive surface to form the overlapped portion. A mechanism for forming a superposed portion of an adhesive tape, comprising: a bend imparting roller.   2. The adhesive tape overlapping portion forming mechanism according to claim 1, wherein the tension applying member includes a rotatable annular plate whose outer periphery is pressed against the adhesive surface of the tape. The guide roller according to claim 2, wherein the guide plate is disposed coaxially with the annular plate and guides the bonding surface.
The overlapping part forming mechanism of the adhesive tape, wherein an outer diameter of the annular plate is larger than an outer diameter of the guide roller.   4. The overlapping part forming mechanism of an adhesive tape according to claim 3, wherein an angle formed by a linear region of the tape before and after the guide roller is smaller than 180 degrees.   5. The regulating member according to claim 2, wherein an edge of the tape in the middle of folding is returned between the tension applying member and the bending applying roller in a direction opposite to the direction in which the tape is folded back. A mechanism for forming an overlapped portion of an adhesive tape, comprising: A tape cutter for attaching and cutting an adhesive surface of a tape having an adhesive surface and a non-adhesive surface on the front and back, and a target surface,
A roll support unit rotatably supporting a tape roll on which the tape is wound;
A pressure roller for pressing the non-adhesive surface of the tape in order to attach the adhesive surface of the tape fed from the roll to the target surface;
A tape cutter comprising the adhesive tape overlapping portion forming mechanism according to any one of claims 1 to 5.

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