JP4127673B2 - Adhesive sheet winding device - Google Patents

Description

  The present invention relates to a pressure-sensitive adhesive sheet winding device for winding a sheet material having a pressure-sensitive adhesive layer (hereinafter referred to as “pressure-sensitive adhesive sheet”) into a roll.

  In the conventional winding device 20 shown in FIG. 3, a paper tube 17 made of thick cardboard or the like is attached to one winding shaft 4a of a plurality of winding shafts 4 supported by a turret. The paper tube 17 is rotationally driven together with 4a, and the pressure-sensitive adhesive sheet 16 is wound around the peripheral surface of the paper tube 17 with the paper tube 17 as a winding core. The pressure-sensitive adhesive sheet 16 has a pressure-sensitive adhesive layer 18 formed on the surface with dotted lines in the figure. Although the illustration of the turret is omitted, the trajectory 40 of the winding shaft 4 that moves along with the turning is represented by a virtual circle in the drawing. The paper tube 17 is indispensable for preventing the adhesive layer 18 of the adhesive sheet from directly adhering to the winding shaft 4. According to the winding device of the conventional example, when the pressure-sensitive adhesive sheet 16 having a predetermined length is wound around one winding shaft 4a, the turret is drawn while continuing to wind the pressure-sensitive adhesive sheet 16 onto one winding shaft 4a. Turn counterclockwise inside. As a result, the other winding shaft 4b moves to the position of the one winding shaft 4a, and the one winding shaft 4a moves to the position of the right winding shaft 4c.

  Furthermore, the cutter 19 is advanced as shown by the phantom line just below the other winding shaft 4b (corresponding to 4a in the figure), and the adhesive sheet 16 is cut by the cutter 19. At the same time, the cutter 19 presses the adhesive layer 18 of the adhesive sheet 16 against the other winding shaft 4b, so that the adhesive sheet 16 adheres to the other winding shaft 4b and starts to be wound around the other winding shaft 4b. By repeating the above operation, the pressure-sensitive adhesive sheet 16 can be sequentially wound around the plurality of winding shafts 4. Moreover, the adhesive sheet 16 wound around each winding shaft 4 is removed from the turret and becomes a roll product. Techniques relating to such a winding device are disclosed in the following patent documents.

Japanese Utility Model Publication No. 58-191153

  However, the pressure-sensitive adhesive sheet 16 having the appearance of a roll product as described above is unwound again and used. Therefore, even if all the adhesive sheets 16 are used up, only the paper tube 17 remains, and the paper tube 17 must be disposed of. Furthermore, there is a problem that the manufacturing cost spent on the paper tube 17 is wasted.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure-sensitive adhesive sheet take-up device that can easily dispose of a roll core and that can minimize the manufacturing cost spent on the roll core.

The present invention relates to a winding device that attaches a winding core around a rotationally driven shaft body, and winds an adhesive sheet around the winding core while rotating the winding core together with the shaft body, A winding shaft in which a suction hole for generating a suction force by evacuation is formed on the peripheral surface of the shaft body, an original sheet of paper wound in a roll shape, a paper feeding means for feeding out the paper from the original sheet, A cutter for cutting the paper from the original fabric, an adhesive supply means for forming an adhesive layer near the cut edge of the paper cut by the cutter, and a guide means for guiding the paper in a direction approaching the peripheral surface of the winding shaft And when the length by which the paper is fed out from the original fabric exceeds the circumference of the shaft body, the paper is separated from the original fabric by the cutter, and the circumferential surface of the winding shaft In the process of winding the paper around the circumference of the winding shaft while sucking the paper By adhesive of the adhesive layer on the paper itself, and forming a winding core made of paper around the winding shaft.

  In the pressure-sensitive adhesive sheet winding device according to the present invention, the guide means winds an endless flexible body around each of a plurality of rotating wheels arranged in two rows between the paper feeding means and the winding shaft. The paper fed from the original fabric is sandwiched between the two conveyors, and the endless flexible bodies of the two conveyors are driven by the rotating wheels. Thus, the paper is sent out toward the winding shaft.

  Further, in the pressure-sensitive adhesive sheet take-up device according to the present invention, the winding shaft is arranged below the paper feeding means, and the overall length of one of the two conveyors in the vertical direction is set to the upper and lower sides of the other conveyor. The endless flexible body of one conveyor guides the paper to the height of the winding shaft, and the endless flexible body of the other conveyor sets the paper to the winding length. It is characterized by guiding to above the shaft.

  Furthermore, in the pressure-sensitive adhesive sheet winding device according to the present invention, the two conveyors face each other in an upright posture, and the paper is sandwiched between the endless flexible bodies of the two conveyors, The two conveyors are separated from each other in a horizontal posture.

  According to the pressure-sensitive adhesive sheet take-up device of the present invention, when the length of the paper fed out from the original fabric exceeds the circumference of the shaft body, the paper is separated from the original fabric with a cutter, and this separation is performed. In the process of winding the paper around the peripheral surface of the winding shaft while sucking the collected paper around the peripheral surface of the winding shaft, the paper itself is adhered to the adhesive layer of the paper, so that the cylindrical winding along the peripheral surface of the suction shaft A heart can be formed. Since the pressure-sensitive adhesive sheet can be wound on a simple core obtained by simply winding a piece of paper around the winding shaft, the pressure-sensitive adhesive sheet that forms the roll product is unwound again and finally Even if only the core remains, the core is only a piece of paper and can be easily disposed of. Moreover, since the cost of the roll core made of a piece of paper is extremely low, the overall manufacturing cost of the roll product including the roll core is also reduced. Further, according to the winding device, since a thick paper tube is not required as in the prior art, waste of valuable paper resources can be reduced.

  Furthermore, according to the pressure-sensitive adhesive sheet take-up device of the present invention, two bodies each comprising an endless flexible body wound around a plurality of rotating wheels arranged in two rows between the paper feeding means and the winding shaft. Is used as a guide means, the paper fed from the original fabric is sandwiched between two conveyors, and the endless flexible body is driven by a rotating wheel, so that the paper is converted into two conveyors. You can guide along. Therefore, the paper once fed from the original sheet by the paper feeding means tries to return to the roll shape again due to the stress remaining in the paper itself, but straightens the paper while correcting this in the process of being guided by the two conveyors. Can be sent to the reel. Moreover, even if the adhesive layer of the paper sticks to the endless flexible body of the conveyor, the paper is brought to the endless flexible body driven by the rotating wheel, and the entire paper is directed to the winding shaft. The advantage of smooth delivery is obtained.

  Furthermore, according to the winding apparatus for the pressure-sensitive adhesive sheet according to the present invention, one endless flexible body of the two conveyors guides the paper to the height of the winding shaft, and the endless flexible body of the other conveyor Since the paper is guided to above the winding shaft, the paper fed downward from the original fabric by the paper feeding means is guided to above the winding shaft while being sandwiched between the two conveyors. Furthermore, when the paper is detached from the endless flexible body of the other conveyor, one surface of the paper is sucked by the winding shaft. Since the surface is guided to the height of the winding shaft, it is possible to reliably regulate the separation of the paper from the winding shaft due to the residual stress as described above. Therefore, the other surface of the paper can be sucked by the winding shaft, and the paper can be wound around the circumferential surface of the winding shaft one or more times in accordance with the rotation of the winding shaft, so that a cylindrical winding core can be reliably formed. Other effects are as described above.

  Further, according to the pressure-sensitive adhesive sheet take-up device of the present invention, the two conveyors face each other in an upright posture, and the paper is sandwiched between the endless flexible bodies of the two conveyors. The two conveyors are configured to be separated from each other in a horizontal posture. By placing the two conveyors in an upright posture, the above-described effects can be achieved by sandwiching paper between the two conveyors. it can. And, for example, when a plurality of winding shafts are supported by a turret and the adhesive sheet is sequentially wound around the plurality of winding shafts by turning the turret, two conveyors are placed in a horizontal posture. Can be withdrawn from the trajectory of the winding shaft moving with the turret turning.

  A pressure-sensitive adhesive sheet winding device according to the present embodiment will be described with reference to the drawings. Constituent elements already described as conventional techniques will be denoted by the same reference numerals and detailed description thereof will be omitted.

  As shown in FIG. 1, the pressure-sensitive adhesive sheet take-up device 1 according to the first embodiment has a plurality of suction holes 2 formed on the peripheral surface of a hollow shaft 3 for generating a suction force by evacuation (negative pressure). The winding shaft 4, the original fabric 6 of the paper 5 wound in a roll shape, the paper feed means 7 for feeding the paper 5 from the original fabric 6, and the paper 5 fed downward from the paper feed means 7 from the original fabric 6 A cutter 8 for separating, an adhesive supply means 10 for forming the adhesive layer 9 on one surface 50 of the paper 5, and a guide means 11 for guiding the paper 5 so that the one surface 50 approaches the peripheral surface of the winding shaft 4. It is.

  The inside of the shaft body 3 of the winding shaft 4 is connected to a vacuum pump not shown in the figure. The vacuum pump generates a negative pressure in the shaft body 3 in a timely manner. The original fabric 6 is a roll of thin, extremely inexpensive strip-shaped paper. The original fabric 6 in the figure is a side view, and the core material 60 is rotatably supported by a bracket not shown in the figure. The paper feeding means 7 is mainly composed of a pair of feed rollers 70, and the paper 5 is sandwiched between them. One of the pair of feed rollers 70 is connected to a drive source such as an electric motor. When the drive source is activated, the pair of rollers 70 are rotationally driven in synchronization with each other. As a result, the paper 5 can be pulled downward from the original fabric 6, and the paper 5 can be fed out below the pair of rollers 70.

  The cutter 8 stands by at a position indicated by a solid line in the drawing, and advances the paper 5 in a direction crossing the paper 5 at a timing described later, that is, from the one surface 50 to the other surface 51 side (left side in the drawing). . During this advance, the cutter 8 cuts the paper 5. Reference numeral 80 in the drawing indicates a receiving plate for preventing the paper 5 from being bent and escaping to the other surface 51 side at the moment when the cutter 8 cuts into the paper 5. The pressure-sensitive adhesive supply means 10 is a nozzle that sprays the pressure-sensitive adhesive onto one surface 50 of the paper 5. A liquid acrylic adhesive may be applied as the adhesive. Alternatively, a thermoplastic synthetic resin may be applied as the adhesive, and the resin 5 may be sprayed onto the one surface 50 of the paper 5 through the adhesive supply means 10 while being heated.

  As the guide means 11, two endless flexible bodies 13 each comprising a wide belt are wound around a plurality of rotating wheels 12 arranged in two rows between the paper supply means 7 and the winding shaft 4. The belt conveyors 14 and 15 are applied. As shown by the solid line in the figure, the two belt conveyors 14 and 15 face each other when they are in the upright posture, and the paper 5 is sandwiched between the endless flexible bodies 13. it can. As indicated by phantom lines in the figure, the two belt conveyors 14 and 15 may be configured to be separated from each other when each of the belt conveyors 14 and 15 is in a horizontal posture. This provides the following advantages. That is, as described in the prior art, when a plurality of winding shafts 4 are supported by a turret and the adhesive sheet 16 is sequentially wound around the plurality of winding shafts 4 by turning the turret, two belts are used. By placing the conveyors 14 and 15 in a horizontal posture, the two belt conveyors 14 and 15 can be quickly retracted from the tracks 40 of the plurality of winding shafts 4.

  Below, operation | movement of the said winding apparatus 1 is demonstrated. According to the winding device 1, first, the paper 5 is fed downward from the original fabric 6 by the paper feeding means 7. Further, the endless flexible body 13 of each of the two belt conveyors 14 and 15 is driven by the rotating wheel 12, whereby the paper 5 can be sandwiched between the two belt conveyors 14 and 15. In this state, if the endless flexible bodies 13 of the two belt conveyors 14 and 15 are further driven by the rotating wheel 12, the paper 5 passes through the lower ends of the two belt conveyors 14 and 15, It reaches the winding shaft 4 positioned just below the two belt conveyors 14 and 15.

  Further, when the length of the paper 5 fed out from the original fabric 6, specifically, the length L of the paper 5 below the cutter 8 exceeds the circumferential length of the shaft body 3, the original fabric 6 Then, the paper 5 is cut off by the cutter 8. The paper 5 cut by the cutter 8 is distinguished from the form connected to the original fabric 6 and is referred to as “paper piece” below. Immediately after the paper piece 5 is cut from the original fabric 6 by the cutter 8, an adhesive is applied by the adhesive supply means 10 near the cut edge of the paper piece 5. This is the adhesive layer 9 described above.

  As described above, the following effects can be obtained in the process of feeding out the paper 5. That is, the paper or paper piece 5 tries to return to the roll shape like the original fabric 6 again due to the stress remaining on the paper or the paper piece 5 after being fed out from the original fabric 6 by the paper feeding means 7. While correcting in the process of being guided by the belt conveyors 14 and 15, the paper or the paper piece 5 can be made to reach the winding shaft 4 straightly. In addition, the adhesive layer 9 formed on the one surface 50 of the paper piece 5 may adhere to the endless flexible body 13 of the belt conveyor 15 to some extent. The whole of the paper piece 5 can be smoothly fed out toward the winding shaft 4 with the whole of 5.

  Subsequently, as shown in FIG. 2A, the paper sheet 5 is wound around the circumferential surface of the winding shaft 4 by rotating the winding shaft 4 while attracting the one surface 50 of the paper 5 to the circumferential surface of the winding shaft 4. . In this process, as shown in FIG. 4B, when the other surface 51 of the paper piece 5 is adhered to the adhesive layer 9 of the paper piece 5, a cylindrical winding core 30 is formed.

  As described above, since a simple core 30 obtained by simply winding the paper piece 5 around the winding shaft 4 is rotated together with the winding shaft 4 and the adhesive sheet 16 is wound around the winding shaft 4, the roll product Even if the pressure-sensitive adhesive sheet 16 having the form is unwound again and only the core 30 remains at the end, the core 30 is only one piece of paper 5 and can be easily disposed of. In addition, since the core 30 that is only one piece of paper 5 has a very low cost, the manufacturing cost of the roll product including the core 30 can be reduced.

  Further, as shown in the figure, the winding shaft 4 is disposed below the paper feeding means 7, and the overall length in the vertical direction of one belt conveyor 14 is set to be longer than the overall length in the vertical direction of the other belt conveyor 15. The endless flexible body 13 of the belt conveyor 14 guides the paper piece 5 to the height of the winding shaft 4 while being in close contact with the paper piece 5, and the endless flexible body 13 of the other belt conveyor 15 is in close contact with the paper piece 5. You may comprise so that the paper piece 5 may be guided to the upper direction of the winding shaft 4. FIG.

  In this case, the paper piece 5 is guided to above the winding shaft 4 while being sandwiched between the two belt conveyors 14 and 15. Further, when one surface 50 of the paper piece 5 is detached from the endless flexible body 13 of the other belt conveyor 15, the one surface 50 of the paper piece 5 is sucked by the winding shaft 4, but still one of the belt conveyors. 14, the endless flexible body 13 guides the other surface 51 of the paper piece 5 to the height of the winding shaft 4, so that the paper piece 5 is reliably restricted from being separated from the winding shaft 4 by the residual stress as described above. The advantage that the one surface 50 of the paper piece 5 can be sucked by the winding shaft 4 is obtained.

  It should be noted that the present invention can be implemented in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. For example, two guide plates may be substituted for the guide means 11 and the paper piece 5 may be sandwiched between these two guide plates. Further, when removing the adhesive sheet 16 wound in a roll form from the winding shaft 4, compressed air may be supplied to the inside of the shaft body 3 and the air may be ejected from the suction hole 2.

  In the present invention, when a sheet material having an adhesive layer is wound into a roll shape, and the roll-shaped adhesive sheet is cut into pieces and commercialized as an adhesive tape, it is not necessary to ship a thick paper tube with the product to the market. become. Therefore, almost no dust is generated after the adhesive tape, which is the main body of the product, is used up, and the paper tube is not unnecessarily bulky during the distribution process.

The side view which shows the outline of the winding apparatus of the adhesive sheet which concerns on embodiment of this invention. Operation | movement explanatory drawing which shows the outline of the principal part of the winding apparatus of the adhesive sheet which concerns on embodiment of this invention. The side view which shows the outline of the winding apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Winding device 2: Suction hole 3: Shaft body 4: Winding shaft 5: Paper, paper piece 6: Original fabric 7: Paper feed means 8: Cutter 9: Adhesive layer 10: Adhesive supply means 11: Guide means 12: Rotating wheel 13: Endless flexible body 14, 15: Conveyor 16: Adhesive sheet 30: Winding core L: (Feed out) length

Claims (4)

A winding device that attaches a winding core around a rotationally driven shaft body, and winds the adhesive sheet around the winding core while rotating the winding core together with the shaft body,
A winding shaft in which a suction hole for generating a suction force by evacuation is formed on the peripheral surface of the shaft body, an original sheet of paper wound in a roll shape, a paper feeding means for feeding out the paper from the original sheet, A cutter for cutting the paper from the original fabric, an adhesive supply means for forming an adhesive layer near the cut edge of the paper cut by the cutter, and a guide means for guiding the paper in a direction approaching the peripheral surface of the winding shaft And
When the length by which the paper is fed from the original fabric exceeds the circumferential length of the shaft body, the paper is separated from the original fabric by the cutter, and the paper is sucked to the peripheral surface of the winding shaft In the process of winding the paper around the circumferential surface of the winding shaft, the adhesive layer is adhered to the paper itself, thereby forming a core made of paper around the winding shaft. Winding device. The guide means comprises two conveyors each formed by winding an endless flexible body around a plurality of rotating wheels arranged in two rows between the paper feeding means and the winding shaft,
The paper fed from the original fabric is sandwiched between the two conveyors, and the endless flexible body of each of the two conveyors is driven by the rotating wheel, whereby the paper is placed on the winding shaft. The pressure-sensitive adhesive sheet take-up device according to claim 1, wherein the pressure-sensitive adhesive sheet is sent out.   The winding shaft is disposed below the paper feeding means, and the overall length of one conveyor of the two conveyors is set to be longer than the overall length of the other conveyor in the vertical direction. The endless flexible body guides the paper to the height of the winding shaft, and the endless flexible body of the other conveyor guides the paper to above the winding shaft. The winding apparatus of the adhesive sheet of 2. The two conveyors face each other in an upright position, sandwich the paper between the endless flexible bodies of the two conveyors,
The pressure-sensitive adhesive sheet winding device according to claim 3, wherein the two conveyors are separated from each other in a horizontal posture.

Images