JP2007039194A - Adhesive tape cutter and tape cutting method thereby - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive tape cutter and a tape cutting method superior in easiness-to-use while easily and beautifully cutting various adhesive tapes by relatively small force. <P>SOLUTION: The adhesive tape cutter and the tape cutting method thereby include a holder 3 of a cylindrical body capable of attaching-detaching a core of an adhesive tape winding body, a cutter 5a of carving a blade of a small pitch angle shape over the short size side from the long size side on a circular arc on the plate-like base lower end having a width of a tape width or more, a pressurizing piece 4 arranged in a blade upper part and a rotary shaft part 6a arranged in the vicinity of the blade; and can cut the tape by moving a tape position abutting on the blade of the cutter to the short size side from the long size side by downward pressurization to the pressurizing piece and rotation with the axis of the rotary shaft part as a fulcrum. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a tape having a pressure-sensitive adhesive tape wound body (hereinafter simply referred to as “winding body”) wound around a core and coated with an adhesive on the back surface, particularly a tape having a wide width and a strong adhesive strength. It is related with the improvement of the adhesive tape cutting device and the tape cutting method by this which are effective for cutting to arbitrary length.

There are various types of tape material wound around the core as a wound body, such as kraft paper, cellophane, cloth, polypropylene, polyvinyl, etc., packaging, temporary fixing, joining of plate-like objects, sealing or pasting, etc. Widely used for multiple purposes. When using this tape, a cutting device is indispensable because it is cut into a length suitable for the purpose.
Various proposals have been made for an adhesive tape cutting device (for example, the description in Patent Document 1). However, narrow tapes such as stationery are horns, and wide tapes are strong and strong in both strength and adhesive strength. While cutting force is required, these proposals are not enough. Therefore, usually a pair of scissors, a single cutter, etc. were used to perform the necessary cutting.

JP 2004-331296 A

The “adhesive tape cutter” described in Patent Document 1 is an invention whose main purpose is the formation of a non-adhesive knob for facilitating peeling after application, but focusing on the cut portion of the tape, The adhesive tape 2 a drawn out from the adhesive tape wound body 2 inserted into the tape holder 11 is cut by the cutter 8 of the cut portion 6. However, the blades of the cutter 8 are arranged in a straight line, and the cutting force is dispersed because the blade 8 hits the entire width of the adhesive tape at the same time, and it is difficult to cut because it requires a strong force for cutting. The rear is dangerous due to the momentary reaction.
Cutting with scissors or a single cutter is simple, but must always be carried, and requires two separate steps of pasting and cutting, which is cumbersome.
On the other hand, the present invention can easily cut various adhesive tapes including wide and tough tapes with a relatively small force, making it easy to replace adhesive tape rolls, remove the free end of adhesive tape, carry it, etc. Then, it aims at obtaining the adhesive tape cutting device excellent in usability, and the tape cutting method by this.

In order to achieve this object, in the invention of claim 1, a cylindrical body holder to which the core of the adhesive tape winding body can be attached and detached, and a lower end of the plate base having a width equal to or larger than the tape width. A cutter in which a small pitch mountain-shaped blade extending from the long side to the short side is engraved on an arc, a pressure piece disposed above the blade, and a rotating shaft disposed in the vicinity of the blade The tape position that contacts the blade of the cutter is moved from the long side to the short side by pressing downward on the pressure piece and rotating about the axis of the rotating shaft as a fulcrum. This is solved by an adhesive tape cutting device that can cut the tape.
In the invention of claim 2, the holder of the cylindrical body to which the core of the adhesive tape winding body can be attached and detached, and the plate-like base lower end having a width equal to or larger than the tape width from the long side on the arc. A cutter in which a small pitch mountain shaped blade extending on the short side is engraved, and a pressure piece disposed above the blade, and pressurizing the pressure piece downward, the pressure piece and the pressure piece An adhesive tape cutting device capable of cutting the tape by moving the tape position contacting the blade of the cutter from the base long side to the short side by rotating about a line connecting the vicinity of the short blade as the axis. Solved by.
In the invention of claim 3, a substantially rectangular substrate is placed in an upright state, and a holder fixed with an axial center in the vertical direction on the rear side of the substrate in a side view, and a curved surface fixed on the upper side of the substrate. A pressure bar, a guide bar in which a flat portion and a bent free end project from the fixed end fixed to the rear end portion on the lower side of the substrate with a resilient rod-like body, and the cutter extends above the holder. A pedestal in which a cutting portion fixed to a front end portion on the lower side of the substrate and having a protective piece on a base free end, and a rotating shaft portion of a substantially partial spherical body projecting in the vertical direction on the rear side of the cutting portion. The adhesive tape cutting device according to claim 1, wherein the base is attached with the cutting edge inclined backward and downward.
In the invention of claim 4, a substantially rectangular substrate is placed in an upright state, and a holder fixed by placing an axis in the vertical direction on the rear side of the substrate in a side view, and a curved surface fixed on the upper side of the substrate. A pressure bar, a guide bar in which a flat portion and a bent free end project from the fixed end fixed to the rear end portion on the lower side of the substrate with a resilient rod-like body, and the cutter extends above the holder. A pressure-sensitive adhesive tape cutting device according to claim 2, further comprising a cutting portion fixed to a front end portion on a lower side of the substrate and having a protection piece at a base free end, and the base is attached with a blade tip inclined downwardly. can do.
According to the invention of claim 5, the blade is a single blade having a pitch of 0.3 to 1.0 with respect to a width of 1 mm, a length of 1 to 3 mm, and an angle of 18 to 25 degrees. It is preferable to use the pressure-sensitive adhesive tape cutting device according to any one of claims 1 to 4.

  In the invention of claim 6, the tape is drawn out from the wound adhesive tape roll body and brought into contact with the blade of the cutter on the long side of the base that is engraved in an arc shape, while pressing the pressure piece downward, The cutter is rotated slightly to start cutting the tape end on the long side with the blade, and then the tape cutting point is moved to the short side by pressurizing the pressure piece and continuing to rotate the blade. It solved by the tape cutting method by the adhesive tape cutting device in any one of Claims 1-5 which make it move and cut | disconnect the said tape full width.

  According to the adhesive tape cutting device of the present invention, various adhesive tapes can be easily and neatly cut with a relatively small force, and it is easy to replace the adhesive tape roll, take out the free end of the adhesive tape, carry it, etc. ing. Also, according to the adhesive tape cutting method of the present invention, the cutting points are not dispersed from the initial stage to the end of the cutting process, but move intensively and move easily. Can be cut.

Embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a side view and a front view of an adhesive tape cutting device according to an example of the present invention.
FIG. 2 is an example of a part around the cutting portion used in the adhesive tape cutting device of FIG. 1, and is a side view and a front view of a protective piece, a side view and a front view of a cutter.
FIG. 3 is a schematic perspective view showing a time when the adhesive tape cutting device of FIG.
FIG. 4 is a schematic perspective view showing when the adhesive tape is cut by the adhesive tape cutting device of FIG.
Hereinafter, the adhesive tape cutting device of the present invention will be described with the tape withdrawal side in use as the front, the tape storage side as the rear, and the adhesive tape cutting device as the left and right when viewed from the front side to the rear side.
In addition, although this adhesive tape cutting device preferably uses a left-right symmetric type depending on the dominant hand, it will be described below with an example of a left-handed hand along each figure.

Referring to FIG. 1, an adhesive tape cutting device 1 according to an example of the present invention includes a substrate 2, a holder 3, a pressure piece 4, a cutting part 5, a pedestal 6, and a guide bar 7.
In the wound body 8 to be used, the tape 8b is wound around the core 8a for a predetermined length. In the following description, the most widely used wound body 8 for tough and wide use is a tape width of 50 mm and a maximum diameter of 122 mm. , A cloth tape having a core inner diameter of 76 mm is assumed, but the present invention is not limited to this, and the size of each part can be appropriately changed in accordance with the winding size to be cut.
The substrate 2, the holder 3, and the pressure piece 4 can be made of hard plastic, metal, wood, etc., but the hard plastic is most preferable because it is lightest, strong, and low in cost. Then, each member may be fixed separately and may be formed integrally.
The substrate 2 is a substantially rectangular plate-like body and is partially cut in order to fix other members in each direction in an upright state. With this as a central portion, the side view shown in FIG. , The holder 3 is fixed to the rear side with the axis being perpendicular to the plate-like body surface of the substrate 2, the pressure piece 4 is fixed to the upper side, and the guide bar 7 is disposed on the lower rear end. The cutting part 5 is fixed to the lower front end part, and a pedestal 6 protrudes downward on the rear side in contact with the lower cutting part 5.

Holder 3 is a cylindrical body, the outward flange 3b of an outer diameter d ₁ to the lower edge of the outer cylinder 3a slightly than the outer diameter d larger outer diameter d is formed, the outer diameter d to the upper edge of the outer cylinder 3a more slightly smaller inner diameter _{d 3} inward flange 3c is formed, the inner cylinder 3d of the inner diameter _{d 2} along the inner surface of the outer cylinder 3a are formed, each in relation _{d 1>d> d 2>} d 3 It is left. Here, the outer diameter d is slightly smaller than the inner diameter of the core 8a. For example, in the case of the general-purpose wound body 8, the outer diameter d is 72 mm, which is 4 mm smaller than the inner diameter of the core. The height h of the outer cylinder 3a is set to, for example, 40 mm, which is slightly smaller than the tape width of the adhesive tape roll 8, so that the core 8a can be easily attached and detached.
Then, about 1/3 of the periphery of the front side of the outward flange 3 b is fixed to the rear side of the substrate 2, and the axis of the holder 3 is set perpendicular to the surface of the substrate 2.
The pressure piece 4 has a curved surface that is concave downward on the surface, and is fixed to a constricted portion provided on the upper side of the substrate 2 in contact with the upper portion of the holder 3. there is a pressurizable shape downwardly against the thumb F ₁ surface. The curved surface of the pressure piece 4 is a rounded surface having a radius of about 40 mm, and the center position is preferably on an inclined surface of about 8 to 20 degrees with respect to the axis of the vertical rotation shaft portion 6a described later. Pressure is effective.

The cutting part 5 also has a cutter 5a, a protective piece 5b, and a fixture 5c with reference to FIG. Here, FIG. 1 (a ′) is a partial view around the cutting portion 5 including the cutter 5a assembled with the protective piece 5b. Correspondingly, FIG. 1 (a) is an overall view before the protective piece 5b is assembled. It is.
The cutter 5a is a metal plate such as iron, steel, brass, or a hard plastic plate material such as polyacryl, and has a small pitch mountain-shaped blade on a base 51 whose width is equal to or larger than the tape width and is usually slightly larger. 52 is engraved on the arc.
The blade 52 is made of metal, and a single blade having a pitch of 0.3 to 1.0, a length of about 1 to 3 mm, and an angle of 18 to 25 degrees is engraved on an arc having a radius of about 200 mm with respect to a width of 1 mm. It is preferable that the cutting property is reliable. In the case of the general-purpose adhesive tape wound body 8, for example, the width of the base 51 is 62 mm and the thickness is 1 mm, and the blade 52 is engraved on an arc having a radius of 200 mm, the number of blades is 33 pieces / width 62 mm, the height 3 mm, A single blade with an angle of 18 degrees was used. As a result, the longitudinal length of the end portion of the base 51 was 34 mm on the long side and 25 mm on the short side, and the sharpness was good. For example, in the case of polyacryl, the thickness of the base 51 is 2 mm, the height of the blade is 4 mm, the angle is 20 to 25 degrees, and the others are the same as those of the above metal, and the sharpness is good. However, the shape of the blade 52 is not limited to a single blade.
The protective piece 5b is made of hard or semi-rigid plastic, and has a substantially square-shaped cut 54 below the strip-shaped block 53 in a front view, and a longitudinal groove 55 having a width in which the blade 52 can be inserted from the width direction on the side surface. A fixing screw hole is provided. As shown in FIGS. 1, 3, and 4, the protective piece 5 b has a longitudinal groove 55 on the long side of the free end of the base 51 with the notch 54 of the protective piece 5 b facing the short side when the cutting part 5 is assembled. Inserting and fixing with a fixing tool to the screw hole is effective for ensuring safety to the user with respect to the blade 52 of the cutter 5a, preventing damage, stabilizing the position of the tape 8b to be cut, and the like. The protective piece 5 b is not limited to the above, and a protective piece corresponding to the block 53 may be bonded to the long side of the free end of the base 51.
The fixture 5c is a substantially L-shaped hard plastic or metal plate, and one piece projects from the surface of the base member 2 on the same side as the holder 3 in the direction perpendicular to the base 51 of the cutter 5a and the other. The pieces are fixed to the base member 2 by screws or the like, respectively. As a result, the cutter 5a is fixed to the lower front end portion of the substrate 2, and at this time, the lower front end portion of the substrate 2 is rotated by a base 6 described later. The surface of the base 51 of the cutter 5a is set on the same inclined surface of about 60 degrees so that the blade tip is attached to the moving shaft portion 6a with the cutting edge inclined backward and forward about 60 degrees.

The pedestal 6 has a rotating shaft part 6a and a fixture 6b. The rotating shaft 6a is a hard plastic or metal substantially partial spherical body, preferably a substantially hemispherical body, and has a diameter of about 18 mm. The fixture 6b is a substantially L-shaped hard plastic or metal plate, one piece projecting perpendicularly to the opposite side of the holder 3 with respect to the base material 2, and the other piece facing upward of the base material 2. Etc. or fixed by bonding or the like. Then, the rotating shaft 6a is fixed to the lower surface of one piece by a screw or an adhesive so that the tip point is at the bottom, and at this time, the axis of the rotating shaft 6a is placed in the vertical direction. At this time, the axis of the rotation shaft portion 6a is 65 to 85 mm forward from the holder 3 axis, and 5 to 15 mm perpendicular to the holder 3 from the substrate 2, and the surface of the base 51 is the surface of the rotation shaft portion 6a. From the viewpoint of balance of force and cutting performance, it is preferable to place the cutting edge of 55 to 65 degrees with respect to the shaft core in a downwardly inclined state.
1 and 3, the guide bar 7 is an elastic rod-shaped body made of a metal such as a semi-rigid plastic such as polypropylene, polyethylene, or polyamide, or a spring material, and the fixed end 7 a of the rod-shaped body is below the substrate 2. The flat portion 7b and the free end 7c at the other end are projected on the same side as the holder 3, and the free end 7c is bent in a substantially L shape on the rear side. As shown in FIG. 1A, the free end 7 c is positioned outside the surface of the outer cylinder 3 a of the holder 3. When the guide bar 7 is inserted into the holder 3 with the core 8a of the wound body 8, the flat portion 7b is placed in a direction perpendicular to the surface of the substrate 2 as shown in FIG. During operation, it is maintained so that it does not jump out, and when the wound body 8 is replaced, it can be easily retracted to a position that does not obstruct the replacement as shown by a two-dot chain line, and attachment and detachment can be performed with a simple and simple operation.

Next, the procedure for cutting the adhesive tape by the adhesive tape cutting apparatus 1 will be described sequentially.
(1) At the start of use Referring to FIGS. 3A and 3B, the unwound winding body 8 indicated by a two-dot chain line is moved in the direction of the arrow X to wind the core 8 a on the outer cylinder 3 a of the holder 3. At this time, the free end 7c of the guide bar 7 at the position of the solid line obstructs the insertion, so the free end 7c of the elastic bar-shaped guide bar 7 is moved in the direction of the arrow Y When the core 8a is inserted and retracted, the free end 7c is restored to the original solid line position.
Then, (in this example the left hand) hand H against the thumb F ₁ of the curved surface of the pressure piece 4, other fingers such as the middle finger F ₃ and the ring finger F _4, etc. from the inner cylinder 3d along the inside outward flange 3b Insert and hold inward flange 3c and core 8a. Then, the tape 8b is peeled off from the wound wound body 8 as indicated by a two-dot chain line, and for example, the tape 8b having a length necessary for the pasting surface B of the package or the like to be pasted is pulled out from the free end side. The
(2) At the start of cutting Referring to FIG. 4A, the free end side of the drawn tape 8b is sequentially pasted on the surface of the pasting surface B, and the adhesive tape cutting device 1 is placed about the axis of the holder 3 When slightly rotated in the direction of the arrow P [clockwise in FIGS. 1 (a) and 4 (a)], the tip of the pivot shaft 6a at the bottom of the base 6 comes into contact with the same surface as the affixing surface B. However, since the blade 52 of the cutter 5a is curved in an arc shape at this time, the blade 52 portion on the long side of the base 51 is inclined from the affixing surface B to the wound body 8 and placed in a tension state. It contacts the non-adhesive surface side of the tape 8b.
Then, while pressing the curved surface of your thumbs F ₁ pressure piece 4 below, the base 51 by initiating a slight rotation of the cutter 5a in the direction of arrow Q as a fulcrum rotation axis portion 6a center point Cutting of the tape 8b is started by the blade 52 portion on the long side.
(3) refers to the cut end FIG. 4 (b), the said (2) while pressing the curved surface of the pressing piece 4 downward by further thumb F ₁ to continued during cutting start, the rotation shaft portion 6a center point When the cutting of the tape 8b is continued while moving the cutter 5a in the direction of the arrow Q toward the blade 2 on the short side of the base 51 with the fulcrum as a fulcrum, the cutting point gradually moves to the short side by the pressurization and rotation of the blade 52 of the cutter 5a. The entire width of the tape 8b is cut, and the tape 8b is separated into a portion pasted by cutting and an uncut portion, and the cutting is completed.
As described above in detail, the cutting of the tape 8b by the adhesive tape cutting apparatus 1 is concentrated since the cutting point is concentrated without being dispersed over the entire tape width from the initial stage to the end of the cutting, It can be easily cut with a small force, and can be easily cut even with an adhesive tape having a wide width, for example, cloth, polypropylene, polyvinyl and the like, both strong and adhesive.

  The configuration of the adhesive tape cutting device 1 and the adhesive tape cutting procedure using the adhesive tape cutting device 1 have been described in detail for a wide tape. However, when used for cutting a narrow adhesive tape, the guide bar 7 is flattened according to the tape width. The length of the part 7c is shortened, and the width of the cutter 5a is narrowed and adjusted. In addition, when necessary, when the core 8a is inserted into the outer cylinder 3a of the holder 3, if the backlash is large, a cushioning material or the like is interposed so that the position can be determined and cut smoothly.

Next, a modified example of the adhesive tape cutting device 1 will be described. The adhesive tape cutting device 1 is provided with a pedestal 6 having a rotating shaft portion 6a and a fixture 6b. However, this configuration may be simplified to eliminate the pedestal 6. This is when the part to be cut of the tape 8b is at a position away from the affixing surface B, for example, when cutting the tape at a position bent 90 degrees from the affixing surface B at the corner of a box or the like, For example, when the tape 8b is stuck firmly to the free end of the sticking surface B and the cut portion is lifted to obtain an unattached tape of the required length, the rotary shaft 6a is suspended in the air. Since it cannot be operated because it is in a floating state, the pedestal 6 is unnecessary in that case.
The cutting procedure of the adhesive tape at this time is to press the cutter 5a around the line connecting the pressure piece 4 and the vicinity of the short blade at the end of the base 51 while pressing the curved surface of the pressure piece 4 downward. When rotating in the direction of the arrow Q, the cutting point moves to the blade 52 portion on the short side after first cutting the tape 8b that contacts the blade 52 portion on the long side of the base 51, and the cutting point from the beginning to the end of cutting. Is concentrated without being distributed over the entire tape width. At this time, since there is no rotating shaft portion 6a, the cutting force needs to be slightly larger than that in the case of the adhesive tape cutting device 1, but is in a practically cuttable range.
Also in the adhesive tape cutting device 1 having the rotating shaft portion 6a, the procedure for cutting the adhesive tape in the case where the portion to be cut of the tape 8b is located away from the affixing surface B as described above is the same. Can be done.

  The pressure-sensitive adhesive tape cutting device of the present invention can easily and reliably cut various pressure-sensitive adhesive tapes, and can be used for a wide variety of uses such as home use, office use, and industrial use.

BRIEF DESCRIPTION OF THE DRAWINGS The adhesive tape cutting device of an example of this invention is shown, (a) Side view, (a ') Partial side view, (b) Front view. It is an example of the components around the cutting part used for the adhesive tape cutting device of FIG. 1, (a) protection piece side view, (b) protection piece front view, (c) cutter side view, (b) cutter front view. It is a schematic perspective view which shows the time of a start of use by mounting | wearing the adhesive tape cutting body of the adhesive tape cutting device of FIG. 1, (a) The view from back, (b) The view from the front. It is a schematic perspective view which shows the time of the cutting | disconnection of the adhesive tape by the adhesive tape cutting device of FIG. 1, (a) At the time of cutting start, (b) At the time of completion | finish of cutting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape cutting device 2 Board | substrate 3 Holder 3a Outer cylinder 4 Pressurization piece 5 Cutting part 5a Cutter 5b Protection piece 51 Base 52 Blade 6 Base 6a Rotation shaft part 7 Guide bar 7a Fixed end 7b Flat part 7c Free end 8 Adhesive tape Winding body 8a Winding core 8b Tape B Pasting surface

Claims (6)

  Cylindrical holder to which the core of the adhesive tape winding body can be attached and detached, and a small pitch mountain-shaped blade extending from the long side to the short side on the circular arc at the lower end of the plate base having a width equal to or larger than the tape width And a rotating piece disposed in the vicinity of the blade, and pressurizing the rotating piece downward and rotating the rotating piece. An adhesive tape cutting device characterized in that the tape can be cut by moving the tape position contacting the blade of the cutter from the long side to the short side by rotation about the axis of the moving shaft as a fulcrum. .   Cylindrical holder to which the core of the adhesive tape winding body can be attached and detached, and a small pitch mountain-shaped blade extending from the long side to the short side on the circular arc at the lower end of the plate base having a width equal to or larger than the tape width And a pressure piece disposed above the blade, and a line connecting the pressure piece downward to the pressure piece and the vicinity of the blade on the short side. An adhesive tape cutting device characterized in that the tape can be cut by moving the tape position contacting the blade of the cutter from the long side of the base to the short side by rotation as an axis.   A substantially square substrate is placed in an upright state, and in a side view, a holder fixed with an axial center in the vertical direction on the rear side of the substrate, a pressure piece fixed on the upper side of the substrate and having a curved surface, and elastic A guide bar in which a flat portion and a bent free end project from the fixed end fixed to the rear end portion on the lower side of the substrate with a rod-like body, and a cutter is fixed to the front end portion on the lower side of the substrate. A cutting part having a protection piece at a free end; and a base on which a rotating shaft part of a substantially partial spherical body projects in the vertical direction on the rear side of the cutting part; The adhesive tape cutting device according to claim 1, wherein the adhesive tape cutting device is attached to be inclined downward.   A substantially square substrate is placed in an upright state, and in a side view, a holder fixed with an axial center in the vertical direction on the rear side of the substrate, a pressure piece fixed on the upper side of the substrate and having a curved surface, and elastic A guide bar in which a flat portion and a bent free end project from the fixed end fixed to the rear end portion on the lower side of the substrate with a rod-like body, and a cutter is fixed to the front end portion on the lower side of the substrate. The adhesive tape cutting device according to claim 2, further comprising a cutting portion having a protective piece at a free end, and the base is attached with a blade edge inclined downwardly.   The blade is a single-edged blade having a pitch of 0.3 to 1.0 with respect to a width of 1 mm, a length of 1 to 3 mm, and an angle of 18 to 25 degrees. The adhesive tape cutting device according to any one of claims 1 to 4. Pull out the tape from the adhesive tape winding body and bring it into contact with the cutter blade on the long side of the base that is engraved in an arc shape. To start cutting the tape end on the long side, and then move the tape cutting point to the short side by pressing the pressure piece and continuing to rotate the blade to cut the full width of the tape. The tape cutting method by the adhesive tape cutting device in any one of Claims 1-5 characterized by the above-mentioned.

Images