JP2006256787A - Tape winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape winding device capable of pasting adhesive tapes in the condition that their non-adhesive portions overlap finely. <P>SOLUTION: The tape winding device 100 is equipped with a tape roll supporting means 120 for supporting a tape roll 200, a tape fold-back means 130 for folding back the side end T<SB>0</SB>of a adhesive tape T delivered from the tape roll 200 along the longitudinal direction, a tape winding roller 140 for setting the tape T with the side end T<SB>0</SB>folded back fast on a bobbin etc. 300, and a tape winding guide 150 for pinching the front margin T<SB>4</SB>and rear margin T<SB>5</SB>of the tape T set fast on the bobbin etc. 300 in cooperation with the tape winding roller 140 and closing the tape T in a loop, wherein low stepping parts 145 and 155 for runoff of the side end T<SB>0</SB>of the tape T having thickened upon being folded back are provided on at least either of the tape winding roller 140 and the tape winding guide 150. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tape winding device for winding an adhesive tape around a winding object such as a packaging bag.

  2. Description of the Related Art Conventionally, a tape winding device called a bag sealer is known as a device for winding an adhesive tape around a bag mouth of a packaging bag. This type of tape winding device is widely used in supermarkets, department stores, and the like for sealing packaging bags such as confectionery and fruits and vegetables. However, the pressure-sensitive adhesive tape wound around the bag mouth often has a hard time to peel off because the pressure-sensitive adhesive surfaces are in close contact with each other, and often requires troublesome work for the unsealed person. In view of such an actual situation, a tape winding apparatus that can form a non-adhesive portion that can be peeled off on an adhesive tape wound around a bag mouth has been proposed in the past.

  For example, in Patent Document 1, a tape is provided with tape folding means (indicated as “tape side edge folding device” in Patent Document 1) having a wide entrance width and a narrow exit width. A winding device (described as “adhesive tape applicator” in Patent Document 1) is described. Accordingly, it is possible to form a non-adhesive portion that can be peeled off at the side end portion of the adhesive tape wound around the bag mouth, and the bag can be easily opened.

Japanese Utility Model Publication No. 49-041024 (Scope of request for registration of utility model, Fig. 2)

  However, in the tape winding device of Patent Document 1, the adhesive tape remaining in the front and back without being wound around the bag mouth is referred to as a tape winding roller (in Patent Document 1, "working member") and the tape. When sandwiched and bonded with a winding guide (described as “pressing rod” in Patent Document 1), the non-adhesive portions that are folded and thickened come into contact with each other before the adhesive portions. Therefore, the non-adhesive parts slip each other, and the non-adhesive parts may be bonded together in a shifted state. For this reason, not only does the appearance of the adhesive tape wound around the bag mouth worsen, but there is also a possibility that the non-adhesive part formed with a corner may not be used as a margin for peeling off.

  The present invention has been made in order to solve the above-described problems. The adhesive tape remaining before and after the winding object without being wound is sandwiched between the tape winding roller and the tape winding guide and attached. When winding the tape, the non-adhesive parts of the adhesive tape can be prevented from coming in contact with each other before the adhesive parts, and the adhesive tape can be attached in a state where the non-adhesive parts are neatly overlapped. A rotating device is provided.

  The above-mentioned problems include a tape roll supporting means for supporting the tape roll, a tape folding means for folding the side end portion of the adhesive tape fed out from the tape roll along the longitudinal direction, and the side end portion folded back. Tape winding roller for winding the adhesive tape around the winding object, and the adhesive tape is looped by holding the front and rear surplus parts of the adhesive tape wound around the winding object with the tape winding roller. In a tape winding device provided with a tape winding guide for closing the tape, a lower step for releasing the side end portion of the adhesive tape that has been folded back and thickened is formed between the tape winding roller and the tape winding guide. This is solved by providing a tape winding device provided on at least one side. As a result, when the adhesive tape remaining before and after the object to be wound without being wrapped is sandwiched between the tape winding roller and the tape winding guide and bonded together, the side of the adhesive tape that is folded back and thickened It becomes possible to let an edge part escape to the said low step part.

  Specifically, the tape winding roller has a gear-like shape having a peak portion for supporting the adhesive tape and a valley portion for inserting the winding object on the outer peripheral surface, and the low step portion is the It is preferable that it is provided on the top surface of the mountain portion. Further, the tape winding guide is an arm-shaped member having a distal end portion for sandwiching the adhesive tape and a proximal end portion for attaching an urging means for urging the distal end portion toward the tape winding roller. It is also preferable that the low step portion is provided at the tip portion.

  The depth of the low step portion varies depending on the thickness of the adhesive tape and is not particularly limited, but if it is too shallow, the effect of preventing the non-adhesive portions of the adhesive tape from contacting each other before the adhesive portions is obtained. Usually, it is set to 0.1 mm or more because there is a possibility of a significant decrease. The depth of the low step portion is preferably 0.5 mm or more, and more preferably 0.7 mm or more. On the other hand, if the low step portion is too deep, wrinkles may be formed on the adhesive tape by the low step portion. Therefore, the depth of the low step portion is usually set to 1.5 mm or less. The depth of the low step portion is preferably 1.2 mm or less, and more preferably 1.0 mm or less. When the low step portion is provided on both the tape winding roller and the tape winding guide, the depth of each low step portion may be set so that the total depth is within the above range.

  The tape folding means is not particularly limited as long as one side end or both side ends of the adhesive tape can be folded back in the longitudinal direction, and a shaft portion for bending the adhesive tape to the non-adhesive surface side; In addition, it is preferable to have a diameter-enlarged portion for regulating the width of the adhesive tape and folding back the side end portion of the adhesive tape. Thereby, the side end part of the adhesive tape can be folded more neatly, and the significance of using the tape winding device of the present invention is further deepened. At this time, it is more preferable that the shaft connecting surface of the enlarged diameter portion is formed in a mortar shape.

  As described above, when the tape winding device of the present invention is used to sandwich and stick the adhesive tape remaining before and after the winding object between the tape winding roller and the tape winding guide without being wound. The non-adhesive portions of the adhesive tape can be prevented from contacting each other before the adhesive portions, and the adhesive tape can be bonded in a state where the non-adhesive portions are neatly overlapped with each other. For this reason, not only makes the appearance of the adhesive tape wound around the winding object beautiful, but also more reliably forms a non-adhesive part that can be peeled off on the adhesive tape wound around the winding object. It becomes possible.

  The tape winding device of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a perspective view showing an example of a tape winding device 100 of the present invention. FIG. 2 is a perspective view showing a state where one side plate 110 is removed from the tape winding device 100 of FIG. FIG. 3 is a right side view showing the tape winding device 100 of FIG. FIG. 4 is a perspective view showing the tape folding roller 130 when the adhesive tape T is folded. FIG. 5 is a right side view showing the tape folding roller 130 when the adhesive tape T is folded. FIG. 6 is a cross-sectional view showing a state in which the tape turning roller 130 is cut along a plane passing through its central axis. FIG. 7 is a perspective view showing the tape winding roller 140. FIG. 8 is a view of the peak portion 142 of the tape winding roller 140 as viewed from the front side of the peak portion 142. FIG. 9 is a rear perspective view of the tape winding arm 150. FIG. 10 is a left side view showing the tape winding arm 150.

[Overall configuration of tape winding device]
As shown in FIG. 1, the tape winding device 100 is configured such that each part is accommodated in a gap between a pair of side plates 110. In the tape winding apparatus 100 of this example, as shown in FIG. 2, the tape reel 120, the tape folding roller 130, the tape winding roller 140, the tape winding arm 150, the tape cutting arm 160, and the tape presser. The arm 170, the cutting unit 180, and the springs S _{1 to} S ₃ are accommodated in a gap between the pair of side plates 110. As shown in FIG. 2, a tape roll 200 around which the adhesive tape T is wound is fitted on the outer periphery of the tape reel 120. For the adhesive tape T, a single-sided adhesive tape (width 12 mm, thickness 53 μm) having an adhesive surface α on one side and a non-adhesive surface β on the other side is used. The adhesive tape T is fed out from the tape roll 200 with the adhesive surface α facing upward.

[Side board]
As shown in FIG. 1, the pair of side plates 110 includes a vertical wall portion 111 and a leg portion 112. One side plate 110 is substantially symmetrical to the other side plate 110 in the left-right direction. The vertical wall portion 111 of the side plates 110, a guide groove 113 for guiding the tape reel 120, the guide grooves 114, 115 for guiding the winding object, for fitting the bolt _B 1 _{.about.B 14} Bolt holes (not shown). The legs 112 are formed by bending the lower ends of the pair of side plates 110 outward. The leg part 112 may be formed separately from the vertical wall part 111.

[Tape reel (tape roll support means)]
As shown in FIG. 3, the tape reel 120 of the present example includes a center portion 121, a plurality of arm portions 122 that extend radially from the center portion 121, and a shaft portion 123 that protrudes laterally from the center portion 121. It has become. As shown in FIG. 1, the shaft portion 123 is fitted into a guide groove 113 provided in the pair of side plates 110 and is rotatably supported at the deepest portion of the guide groove 113. The tape reel 120 is rotated in the direction of the arrow b (FIG. 3) when the adhesive tape T is fed out in the direction of the arrow a (FIG. 3). The tape reel 120 is in a stationary state in the initial state.

[Tape folding roller (tape folding means)]
As shown in FIGS. 4 to 6, the tape folding roller 130 of this example includes a shaft portion 131 and a diameter-enlarged portion 132 provided in a flange shape at one end of the shaft portion 131. As shown in FIG. 6, the shaft connecting surface 133 of the enlarged diameter portion 132 is formed in a mortar shape, and a tapered surface 135 is provided between the shaft connecting surface 133 and the outer peripheral surface 134. It has been. If the ridge formed by the shaft connecting surface 133 and the tapered surface 135 is formed smoothly by providing a rounded shape, the frictional force that the adhesive tape T receives from the tape folding roller 130 can be reduced. Therefore, it is preferable. Further, the shaft portion 131, a bearing hole 136 is provided, the pipe _{P 1} is loosely inserted in the bearing hole 136. For this reason, when the adhesive tape T is fed out in the direction of the arrow a (FIG. 3), the tape folding roller 130 rotates in the direction of the arrow c (FIG. 3). The pipe P ₁ has a thread groove on its inner peripheral surface, and can be fixed to the pair of side plates 110 (FIG. 1) by screwing the bolt B ₁ (FIG. 1). . Pipe P ₁ has a one having not only the function as a shaft for rotatably supporting the tape folding rollers 130, also functions as a connector for connecting and fixing the pair of side plates 110 (FIG. 1).

If the apex angle θ ₁ (FIG. 6) of the shaft connecting surface 133 is too small, the ridge formed by the shaft connecting surface 133 and the tapered surface 135 becomes steep, and the adhesive tape T is damaged or caught. Is usually set to 10 ° or more. The apex angle θ ₁ is more preferably 60 ° or more, further preferably 90 ° or more, and most preferably 120 ° or more. On the other hand, if the apex angle θ ₁ is too large, the side end portion T ₀ of the adhesive tape T may come into contact with the shaft connecting surface 133 in a wide area and the frictional force received by the adhesive tape T may increase. Usually, it is set to 170 ° or less. The apex angle θ ₁ is more preferably 160 ° or less, further preferably 150 ° or less, and most preferably 140 ° or less. In the tape folding roller 130 of this example, the apex angle θ ₁ is about 130 °.

If the apex angle θ ₂ (FIG. 6) of the tapered surface 135 is too small, the ridge formed by the shaft connecting surface 133 and the tapered surface 135 becomes steep, and the adhesive tape T is scratched or caught. Is usually set to 10 ° or more. The apex angle θ ₂ is more preferably 20 ° or more, further preferably 30 ° or more, and most preferably 40 ° or more. On the other hand, if the apex angle θ ₂ is too large, the side end portion T ₀ of the adhesive tape T may come into contact with the outer peripheral surface 134 in a wide area and the frictional force received by the adhesive tape T may increase. It is set to 170 ° or less. The apex angle θ ₂ is more preferably 140 ° or less, further preferably 110 ° or less, and most preferably 80 ° or less. In the tape folding roller 130 of this example, the apex angle θ ₂ is about 65 °.

As shown in FIG. 3, the position where the tape folding roller 130 is provided is a position where the adhesive tape T can be tensioned while being bent to the non-adhesive surface β side between the tape roll 200 and the tape winding roller 140. If it is, it will not specifically limit, However, Usually, it provides in the position from which bending angle (theta) ₃ (FIG. 3) of the adhesive tape T will be 5-90 degrees. If the bending angle θ ₃ is less than 5 °, the side end T ₀ (FIG. 4) of the adhesive tape T may not be folded, and if the bending angle θ ₃ is larger than 90 °, the tape winding device This is because the size of 100 may become uselessly large. The bending angle θ ₃ is preferably 10 ° or more, and more preferably 20 ° or more. Further, the bending angle θ ₃ is preferably 80 ° or less, and more preferably 70 ° or less.

[Operation of tape folding roller]
The operation of the tape folding roller 130 will be described. Adhesive tape T fed from the tape roll 200, as shown in FIG. 5, A ₁ parts of (first contact portion) in contact with the tape folding roller 130. In A ₁ part by ridge formed by the shaft portion connecting surface 133 and the tapered surface 135 is in contact with the non-adhesive surface β side side edge portion T ₀ of the adhesive tape T, the adhesive surface of the side edge portion T ₀ The upright portion T ₁ is bent to the α side. In this case, the width of the adhesive tape T is narrowed sharply, the adhesive tape T is stuck at ₁ part A, there is a risk that undesirable wrinkles in the adhesive tape T is formed, the tape folding roller 130 of the present embodiment , because it is provided with a tapered surface 135, the adhesive tape T is less likely to be caught in _one part a. Also, even if the adhesive tape T is caught by A ₁ part, in that case, the tape folding roller 130 rotates in the direction of arrow c (FIG. 3) due to friction, and the adhesive tape T is moved from the A ₁ part. It comes to be sent out without difficulty. Since the tape folding roller 130 is formed in a rotationally symmetrical manner, the tape folding roller 130 can always be kept in contact with the adhesive tape T in the same state even when rotated.

Adhesive upright portion T ₁ passes through the A ₁ part is formed tape T, as shown in FIG. 5, the tape folding rollers after temporarily away from the tape folding roller 130, A ₂ parts (second contact portion) 130 again. In part A ₂ , the outer peripheral surface of the shaft part 131 is in contact with the non-standing part T ₃ (FIG. 4) of the adhesive tape T from the non-adhesive surface β side, and the adhesive tape T is bent toward the non-adhesive surface β side. the upright portion _{T 1} of the tape T and the non-upright portion _{T 3} lodging section _{T 2} which is laid down in (FIG. 4) side. At this time, the adhesive tape T comes into contact with the enlarged diameter portion 132, the adhesive tape T is frictional force received from the tape folding roller 130 is increased, or is formed undesirable wrinkles in the adhesive tape T, the standing portion T ₁ is sufficiently However, in the tape folding roller 130 of this example, since the shaft connecting surface 133 is formed in a mortar shape, the adhesive tape T is less likely to contact the enlarged diameter portion 132. Yes. Also, even if the adhesive tape T is caught at the A ₂ part, in that case, the tape folding roller 130 rotates in the direction of the arrow c (FIG. 3) due to friction, and the adhesive tape T moves from the A ₂ part. It comes to be sent out without difficulty.

As shown in FIG. 5, the adhesive tape T in which the lying portion T ₂ has passed through the A ₂ portion is separated from the tape folding roller 130 again, and then the A ₃ portion (third contact portion) is the tape folding roller. 130 again. The A ₃ parts by ridge formed by the shaft portion connecting surface 133 and the tapered surface 135 is in contact with the non-adhesive surface β side lodging portion T ₂ of the adhesive tape T, the lodging section T ₂ non upright portion T ₃ (FIG. 4). In this case, the width of the adhesive tape T is narrowed sharply, the adhesive tape T is caught at the A ₃ parts, there is a risk that undesirable wrinkles in the adhesive tape T is formed, the tape folding roller 130 of the present embodiment , because it is provided with a tapered surface 135, the adhesive tape T is being adapted difficult caught by a ₃ parts, the adhesive tape T is adapted to be placed guided comfortably to ₃ parts a. Also, any chance, even adhesive tape T is caught at A ₃ parts, in which case the tape folding roller 130 is rotated in the direction of arrow c by friction (Fig. 3), the adhesive tape T is A ₃ parts It comes to be sent out without difficulty.

As described above, the adhesive tape T is in a state where the side end portion T ₀ is folded along the longitudinal direction through the A ₁ portion to the A ₃ portion of the tape folding roller 130. At this time, the tape folding roller 130 is not in contact with the adhesive surface α of the adhesive tape T at any part. For this reason, the tape folding roller 130 can fold the adhesive tape T smoothly and beautifully. In the tape winding device 100 of the present embodiment, the side end portion T ₀ is designed to be folded at a width of about 1.5 mm.

[Tape winding roller]
As shown in FIG. 7, the tape winding roller 140 of this example has a gear-like shape in which peak portions 142 and valley portions 143 are alternately formed on the outer peripheral surface of the center portion 141. As shown in FIGS. 11 to 14, the mountain portion 142 is for supporting the adhesive tape T, and the valley portion 143 is for inserting the winding object 300. A bearing hole 144 is provided in the central portion 141, and a pipe P ₂ (not shown) is loosely inserted into the bearing hole 144. For this reason, when the winding object 300 is inserted into the valley portion 143 of the tape winding roller 140 and pushed down, the tape winding roller 140 rotates in the direction of the arrow d (FIG. 3). The pipe P ₂ (not shown) and the bolt B ₂ (FIG. 1) screwed to the pipe P ₂ are the same as the pipe P ₁ and the bolt B ₁ described in the tape folding roller 130.

As shown in FIGS. 7 and 8, a low step portion 145 is provided on the top surface of the peak portion 142. Low-stage section 145 has a one for releasing the side edge portion T ₀ of the adhesive tape T thickened folded back. Therefore, as shown in FIG. 14, when closing the tape winding roller 140 and sandwiching the remainder portion T ₄ and the rear remainder portion T ₅ before the adhesive tape T in the tape winding arm 150 adhesive tape T to the annular Before the non-adhesive part of the front surplus part T _{4 and} the non-adhesive part of the rear surplus part T ₅ come into contact, the adhesive part of the front surplus part T _{4 and} the adhesive part of the rear surplus part T ₅ are It can be contacted. Further, before the the adhesive portion of the front remainder portion T ₄ of the adhesive portion and the rear remainder portion T ₅ are in contact, and the non-adhesive portion of the non-adhesive portion and the rear remainder portion T ₅ of the front remainder portion T ₄ contact even when, thereby making it possible to release the non-adhesive portion of the rear remainder portion T ₅ the low-stage section 145. In the tape winding roller 140 of this example, the low step portion 145 is provided on the top surface on the left side of the peak portion 142. It is preferable that the edge of the low step portion 145 be formed smoothly, for example, by being rounded, because an undesirable crease can be prevented from being formed on the adhesive tape T.

Position and size of the low-stage section 145, the positional relationship and the tape folding roller 130 and the tape winding roller 140 is appropriately adjusted depending on the width folding the side edge portion T ₀ of the adhesive tape T, and I'm not particularly limited. However, if the distance L ₁ (FIG. 8) from the inner end (right end in FIG. 8) of the folded side end T _{0 to} the inner end (right end in FIG. 8) of the low step portion 145 becomes too short, the adhesive tape If the T is supported on the ridges 142 deviates from a desired position, or no longer be able to escape the entire side end portion T ₀ in the low-stage section 145, or longitudinal fold is formed on the adhesive tape T There is also a risk. Therefore, the low step portion 145 is normally provided with a distance _{L 1} so as to ensure more 0.5 mm. The distance _{L 1} is more preferable to be 1mm or more and further preferably 1.5mm or more. The distance L ₂ (FIG. 8) from the outer end (left end in FIG. 8) of the folded side end portion T _{0 to} the outer end (left end in FIG. 8) of the low step portion 145 is substantially the same as the distance L _1. is there. On the other hand, if the distance L ₃ (FIG. 8) from the outer end (the right end in FIG. 8) of the adhesive tape T that is not folded back to the inner end (the right end in FIG. 8) of the low step portion 145 becomes too short, the adhesive tape T When the tape T is displaced from a desired position and supported by the peak portion 142, the entire adhesive tape T may fall off to the low step portion 145. Therefore, the low step portion 145 is normally provided with a distance _{L 3} to a position capable of securing more than 0.5 mm. The distance _{L 3} is more preferable to be 1mm or more, and more preferably 1.5mm or more.

[Tape winding arm (tape winding guide)]
As shown in FIGS. 9 and 10, the tape winding arm 150 of this example includes an arm base end portion 151 and an arm tip end portion 152. A bearing hole 153 is provided in the middle between the arm base end portion 151 and the arm distal end portion 152, and a pipe P ₃ (not shown) is loosely inserted into the bearing hole 153. For this reason, when the arm tip 152 is pushed down, the tape winding arm 150 rotates in the direction of the arrow e (FIG. 3). The pipe P ₃ (not shown), the bolt B ₃ (FIG. 1) and the like screwed to the pipe P ₃ are the same as the pipe P ₁ and the bolt B ₁ described in the tape folding roller 130. A spring S ₁ (FIG. 3) biased so as to contract in the direction of arrow f (FIG. 3) is connected to the arm base end portion 151, and the tape winding arm 150 is connected to the arrow e (FIG. 3). Is biased in the opposite direction. As shown in FIG. 11, in the initial state, the tape winding arm 150 is in a state where the curved concave surface 154 (FIG. 7) provided at the arm tip 152 is locked to the outer periphery of the tape winding roller 140 and is stationary. It has become.

As shown in FIGS. 9 and 10, a low step portion 155 is provided on the curved concave surface 154 of the arm tip portion 152 to which the adhesive tape T is temporarily attached. Low-stage section 155 has a one for releasing the side edge portion T ₀ of the adhesive tape T which became Likewise, thick folded a low stage portion 145 of the tape winding roller 140. Therefore, as shown in FIG. 14, when closing the tape winding roller 140 and sandwiching the remainder portion T ₄ and the rear remainder portion T ₅ before the adhesive tape T in the tape winding arm 150 adhesive tape T to the annular Before the non-adhesive part of the front remainder T _{4 and} the non-adhesive part of the rear remainder T ₅ come into contact, the adhesive part of the front remainder T _{4 and} the adhesive part of the rear remainder T ₅ are It can be contacted. Further, before the the adhesive portion of the front remainder portion T ₄ of the adhesive portion and the rear remainder portion T ₅ are in contact, and the non-adhesive portion of the non-adhesive portion and the rear remainder portion T ₅ of the front remainder portion T ₄ contact Even in this case, the non-adhesive portion of the front surplus portion T ₄ can be released to the low step portion 155. Furthermore, when the front surplus portion T ₄ of the adhesive tape T is attached to the curved concave surface 154 of the tape winding arm 150, the front adhesive portion T ₄ comes before the non-adhesive portion and the curved concave surface 154 come into contact with each other. In addition, the adhesive portion of the front surplus portion T ₄ and the curved concave surface 154 can be brought into contact with each other. The depth and position of the low step portion 155 are substantially the same as those of the low step portion 145 of the tape winding roller 140.

[Operation of tape winding roller and tape winding arm]
The operation of the tape winding roller 140 and the tape winding arm 150 will be described. FIG. 11 is an enlarged view showing the periphery of the tape winding roller 140 when the tape winding roller 140 and the tape winding arm 150 are in the initial state. FIG. 12 is an enlarged view showing the periphery of the tape winding roller 140 when the winding object 300 is inserted into one valley 143 of the tape winding roller 140. FIG. 13 is an enlarged view showing the periphery of the tape winding roller 140 when the winding object 300 is further pushed down from the position of FIG. FIG. 14 is an enlarged view showing the periphery of the tape winding roller 140 when the winding object 300 is further pushed down from the position of FIG.

When the winding object 300 is pushed into the guide groove 114 from above, the winding object 300 is inserted into one trough 143 of the tape winding roller 140 (FIG. 12). At this time, the adhesive tape T is in a state of being wound around a substantially half circumference of the winding object 300. When the winding object 300 is pushed down from this state, the tape winding roller 140 rotates and the winding object 300 is guided below the guide groove 114. At this time, before the remainder portion T ₄ of the adhesive tape T than wound object 300 was left over in front it is temporarily attached to the curved concave surface 154 bulges slightly to the tape winding arm 150 side. Since the curved concave surface 154 is provided with the low step portion 155 (FIG. 9), the adhesive tape T comes into contact with the curved concave surface 154 from the adhesive portion. For this reason, the adhesive tape T is neatly adhered to the curved concave surface 154 without being displaced from side to side.

Further depressing the winding object 300, start peeling the order before too unit T ₄ is from above was adhered to the concave curved surface 154 adhesive tape T, an annular portion begins to form in the adhesive tape T (FIG. 13). When the winding object 300 is further pushed down, the arm tip 152 is pushed by the winding object 300 to the side opposite to the tape winding roller 140 (the left side in FIG. 13). It escapes between the roller 140 and the tape winding arm 150 (FIG. 14). The tape winding arm 150 returns to the initial position immediately after the winding object 300 comes out, and the rear surplus part T ₄ of the adhesive tape T remaining behind the winding object 300 is left behind. Press to ₅ At this moment, the front surplus portion T ₄ and the rear surplus portion T ₅ of the adhesive tape T are sandwiched between the crest 142 of the tape winding roller 140 and the curved concave surface 154 of the tape winding arm 150, and the adhesive portions of each other Are bonded to each other, and an annular portion T ₆ is formed on the adhesive tape T. The top surface of the mountain portion 142 is provided with low-stage section 145 (FIG. 7), to the low-stage section 155 are curved concave 154 (FIG. 9) is provided, the non-pre-remainder portion _{T 4} before the non-adhesive portion of the rear remainder portion T ₅ and the adhesive portion is in contact, the adhesive portion of the adhesive portion and the rear remainder portion T ₅ of the front remainder portion T ₄ are in contact. Therefore, the remainder portion T ₅ the rear and front remainder portion T ₄ of the adhesive tape T is adapted to overlap the clean without positional displacement to the left and right.

[Tape cutting arm (tape cutting means)]
The tape cutting arm 160 is provided as a tape cutting means for cutting the adhesive tape T wound around the winding object 300. As shown in FIG. 15, the tape cutting arm 160 of this example includes an arm base end portion 161 and an arm tip end portion 162. A cutting blade 163 for cutting the adhesive tape T is attached to the arm tip 162. A bearing hole 164 is provided in the middle between the arm base end portion 161 and the arm tip end portion 162, and a pipe P ₄ is loosely inserted into the bearing hole 164. For this reason, when the arm base end portion 161 is pushed down by the winding object 300, the tape cutting arm 160 rotates in the direction of the arrow g (FIG. 3), and the cutting blade 163 is displaced to the guide groove 114 and the adhesive tape. T is cut off. The pipe P ₄ and the bolt B ₄ (FIG. 1) that is screwed to the pipe P ₄ are the same as the pipe P ₁ and the bolt B ₁ described in the tape folding roller 130. The arm tip portion 162, an arrow h (Figure 3) and a spring S _2, which is biased to contract in the direction are connected, the tape cutting arm 160 is urged in the opposite direction to the arrow g (Figure 3) It has come to be. In the initial state, the tape cutting arm 160 is in a stationary state with the curved convex surface 165 provided on the arm base end portion 161 being locked to the tape pressing arm 170.

[Tape holding arm (tape holding means)]
The tape pressing arm 170 is provided as a tape pressing means for pressing the adhesive tape T wound around the winding object 300. As shown in FIG. 15, the tape pressing arm 170 of this example includes an arm base end portion 171 and an arm tip end portion 172. A bearing hole 173 is provided in the arm base end 171, and a pipe P ₅ is loosely inserted in the bearing hole 173. Therefore, when the arm base end portion 161 of the tape cutting arm 160 is pushed down by the winding object 300, the tape cutting arm 170 follows the tape cutting arm 160 and rotates in the direction of the arrow i (FIG. 3). It has become. The pipe P ₅ and the bolt B ₅ (FIG. 1) that is screwed to the pipe P ₅ are the same as the pipe P ₁ and the bolt B ₁ described in the tape folding roller 130. The arm base end section 171, an arrow j is connected a spring S ₃ that is biased to contract in the direction of (3), the tape presser arm 170 is biased in the direction of arrow i (Figure 3) It has become so. In the initial state, the tape pressing arm 170 is in a stationary state with the curved convex surface 174 provided at the arm tip 172 being locked to the tape cutting arm 160.

[Operation of tape cutting arm and tape holding arm]
The operation of the tape cutting arm 160 and the tape pressing arm 170 will be described. FIG. 15 is an enlarged view showing the periphery of the tape cutting arm 160 when the winding object 300 is further pushed down from the position of FIG. FIG. 16 is an enlarged view showing the periphery of the tape cutting arm 160 when the winding object 300 is further pushed down from the position of FIG.

When the winding object 300 is further pushed down from the state of FIG. 14, the arm base end portion 161 of the tape cutting arm 160 is pushed down, the arm tip end portion 162 is inclined toward the guide groove 114, and the cutting blade 163 is placed in the guide groove 114. And the adhesive tape T is cut (FIG. 15). When the winding object 300 is further pushed down from the state of FIG. 15, the space between the arm base end portion 161 and the arm distal end portion 172 is expanded by the winding object 300, and the winding object 300 reaches the takeout port 116. (FIG. 16). The tape cutting arm 160 and the tape pressing arm 170 are formed on the adhesive tape T by returning to the initial position immediately after the wound object 300 passes between the arm base end portion 161 and the arm tip end portion 172. bonded to the strip by crushing the annular portion T _6. Thereafter, the winding object 300 is taken out from the take-out port 116. At this time, the wound object 300 is in a state where the adhesive tape T is wound and tightly tightened.

[Cut unit (finishing means)]
The cutting unit 180 is provided as a finishing means for cutting off an unnecessary portion of the wound object 300 around which the adhesive tape T is wound. As shown in FIG. 3, the cutting unit 180 includes a cutting blade 181 and a case 182 that holds the cutting blade 181. The case 182 is provided with a guide groove 183 for guiding the winding object 300 to the cutting blade 181. The guide groove 183 of the cutting unit 180 is disposed so as to substantially coincide with the guide groove 115 provided in the pair of side plates 110. The cutting unit 180 not only adjusts the dimensions of the winding object 300 but also cuts unnecessary portions of the adhesive tape T wound around the winding object 300 and adjusts the length thereof. It can be used.

[Wound object]
FIG. 17 is a perspective view showing the periphery of the bag mouth of the wound object 300 (packaging bag) wound with the adhesive tape T using the tape winding device 100 of this example. In this packaging bag, an adhesive tape T is wound around the bag mouth to form a neck portion, which is sealed. The wound adhesive tape T in the packaging bag are neatly formed without a pair of non-adhesive portion T ₇ is dislocated. Therefore, the adhesive tape T wound on the packing bag, by pulling in the direction of separating the each of the pair of non-adhesive portion T _7, and so can be easily peeled off, scissors and knives etc. It is possible to easily open the packaging bag without using a tool or tearing the packaging bag. Therefore, it is possible to reuse the packaging bag once used. The tape winding device 100 of the present invention is not only a packaging bag, but also an adhesive tape for various things such as a plurality of long objects such as long leek and burdock bundled by changing the width of the guide groove 114 and the like. T can be wound.

It is the perspective view which showed an example of the tape winding apparatus of this invention. It is the perspective view which showed the state which removed one side plate from the tape winding apparatus of FIG. It is the right view which showed the tape winding apparatus of FIG. It is the perspective view which showed the tape folding roller (tape folding means) when folding the adhesive tape. It is the right view which showed the tape folding roller (tape folding means) when the adhesive tape is folded. It is sectional drawing which showed the state which cut | disconnected the tape folding | turning roller (tape folding | turning means) by the plane which passes through the central axis. It is the perspective view which showed the tape winding roller. It is the figure which looked at the peak part of the tape winding roller from the front side of this peak part. It is a back perspective view of a tape winding arm. It is the left view which showed the tape winding arm. It is the enlarged view which showed the tape winding roller periphery when a tape winding roller and a tape winding arm exist in an initial state. It is the enlarged view which showed the tape winding roller periphery when a winding target object was inserted in the one trough part of a tape winding roller. FIG. 13 is an enlarged view showing the vicinity of a tape winding roller when the winding object is further pushed down from the position of FIG. 12. It is the enlarged view which showed the tape winding roller periphery when the winding target object was further pushed down from the position of FIG. It is the enlarged view which showed the tape cutting arm periphery when the winding target object was further pushed down from the position of FIG. It is the enlarged view which showed the tape cutting arm periphery when the winding target object was further pushed down from the position of FIG. It is the perspective view which showed the bag mouth periphery of the winding target object (packaging bag) which wound the adhesive tape using the tape winding apparatus of this example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Tape winding apparatus 110 Side plate 111 Vertical wall part 112 Leg part 113 Guide groove 114 Guide groove 115 Guide groove 116 Outlet 120 Tape reel (tape roll support means)
121 Tape reel central part 122 Arm part 123 Shaft part 130 Tape folding roller (tape folding means)
131 Shaft portion 132 Expanded portion 133 Shaft portion connection surface 134 Outer peripheral surface 135 Tapered surface 136 Bearing hole 140 Tape winding roller 141 Center portion 142 Mountain portion 143 Valley portion 144 Bearing hole 145 Low step portion 150 Tape winding arm (tape winding arm) Times guide)
151 Arm base end portion 152 Arm tip portion 153 Bearing hole 154 Curved concave surface 155 Low step portion 160 Tape cutting arm (tape cutting means)
161 Arm base end portion 162 Arm tip end portion 163 Cutting blade 164 Bearing hole 165 Curved convex surface 170 Tape pressing arm (tape pressing means)
171 Arm base end 172 Arm tip 173 Bearing hole 174 Curved convex surface 180 Cutting unit (finishing means)
181 Cutting blade 182 Case 183 Guide groove 200 Tape roll 300 Packaging bag (object to be wound)
Wrap around distance L ₂ adhesive tape from A ₁ first contact portion A ₂ second contact portion A ₃ third contact portion B ₁ .about.B ₁₄ volt L ₁ adhesive tape of folded side edge portion end to the low-stage portion end The distance from the outer end of the side end portion to the outer end of the lower step portion L ₃ The distance from the outer end of the adhesive tape not folded back to the inner end of the lower step portion P _{1 to} P ₅ pipes S _{1 to} S ₃ spring T Adhesive tape T ₀ side end portion T ₁ standing portion T ₂ lying portion T ₃ non-standing portion T ₄ front surplus portion T ₅ rear surplus portion T ₆ annular portion T ₇ non-adhering portion α adhesive surface β non-adhesive surface θ ₁ axis Apex angle of joint connecting surface θ ₂ apex angle of outer peripheral surface θ ₃ bending angle

Claims (6)

A tape roll supporting means for supporting the tape roll, a tape folding means for folding the side end portion of the adhesive tape fed out from the tape roll along the longitudinal direction, and an adhesive tape having the side end folded back are wound. A tape winding roller for winding an object to be wound, and a front surplus part and a rear surplus part of the adhesive tape wound around the wound object to be sandwiched between the tape winding roller and closing the adhesive tape in an annular shape In a tape winding device equipped with a tape winding guide, a low step portion for releasing the side end portion of the adhesive tape that has been folded back and thickened is provided on at least one of the tape winding roller and the tape winding guide. Tape winding device. The tape winding roller has a gear-like shape having a crest for supporting the adhesive tape and a trough for inserting a winding object on the outer peripheral surface, and the low step is a top surface of the crest The tape winding device according to claim 1, wherein the tape winding device is provided. The tape winding guide has an arm shape having a distal end portion for sandwiching the adhesive tape and a proximal end portion for attaching an urging means for urging the distal end portion toward the tape winding roller, The tape winding device according to claim 1 or 2, wherein a low step portion is provided at the tip portion. The tape winding device according to any one of claims 1 to 3, wherein a depth of the low step portion is set to 0.1 to 1.5 mm. The tape folding means has a shaft portion for bending the adhesive tape to the non-adhesive surface side and a diameter-expanding portion for regulating the width of the adhesive tape and folding the side end portion of the adhesive tape. 4. The tape winding device according to any one of 4. The tape winding device according to claim 5, wherein the shaft connecting surface of the enlarged diameter portion is formed in a mortar shape.

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