JP2002037515A - Perforation working method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve working efficiency by eliminating slippage of perforations due to increase of a winding diameter, uniformly giving the clean perforations all over and increasing working speed at the time of perforating every one round of a sheet wound around a winding roll. SOLUTION: Knife edge speed of a cutter roll 4 and sheet delivery speed are synchronized only at the time of synchronizing rotation of the cutter roll 4 and rotation of the winding roll 3 and perforating by increasing and decreasing speed of a head end of a cutter blade 5 in one rotation of the cutter roll 4 in case of forming the winding roll by perforating to cut for every cycle of the winding roll by the cutter blade provided on an outer periphery of the cutter roll by inserting a material sheet S to deliver between the cutter roll 4 on an upper part and a cutter receiver roller 6 of a lower part rotating with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine for rewinding a winding roll such as an adhesive roll wound on a core tube with a pressure-sensitive adhesive applied to one surface thereof, with the adhesive surface facing the surface. The present invention relates to a method and an apparatus for perforating an eye.

[0002]

2. Description of the Related Art Recently, as shown in FIG. 5, a sheet of paper or the like having a surface coated with an adhesive is wound around a core tube 2 with an adhesive surface Sa as a front side in a dust removing adhesive roll or the like. A pressure-sensitive adhesive sheet roll having a required fixed length wound into a roll and attached to a handle H is widely used.

The adhesive sheet roll 3 is used for cleaning dust and the like adhering to a carpet or the like when cleaning the dust or the like attached to the carpet or the like. The adhesive surface S
The carpet is cleaned by transferring it to a, but the surface of the adhesive roll to which dirt adheres naturally loses its adhesive strength due to the adhered dirt with use, so the surface of the adhesive roll is removed by one round and the next new adhesive surface is removed. Is displayed on the surface layer so that the adhesive strength is obtained again.

[0004] At this time, perforations m are inserted into the roll-shaped pressure-sensitive adhesive coated sheet S as shown in FIG. In order to easily remove the sheet by hand, the perforation m is provided for each rotation of the winding roll 3 to wind the sheet around the winding core,
Since two layers and three layers are stacked and wound, the length of each winding changes in each winding layer. In particular, the winding diameter increases and the length of one round increases as approaching the outer layer. It is necessary to perforate the sheet flowing at a constant speed in front of the sheet so as to correspond to the length that increases for each layer.

[0005] This will be described in more detail, a one round length L _{o =} πDi of each layer in the winding roll (However, Di the diameter of the winding roll each layer). For example, when the outer diameter of the paper roll is 4
Assuming 0 mm,

[0006]

[Formula 1]

As described above, when the sheet thickness is 0.5 mm,
For each additional winding, 0.5π = 1.57 mm is added. Therefore, in order to make a perforation for each winding of the winding roll, as shown in FIG. 6, the outer diameter of the winding core is D _o , the sheet thickness is t, and the rotation diameter of the cutter blade tip of the cutter roll is D.
_1, when the outer diameter of the cutter receiving roller and D _2, when winding the first round a winding core, perforations placed with a pitch of (D o _{+ t)} π. Then, the second round is set to (D _o + 2t), and it becomes longer by ntπ every time the winding layer increases.

This means that if the cutter roll 4 having the same diameter as the winding core is rotated at the same rotation speed as the rotation speed of the winding core 2 for winding the sheet traveling at a constant speed, the length between the perforations to be cut is gradually increased. Become. That is, the speed of the sheet _{V 1,} when the rotational speed of the core and _{N 1,} the rotational speed of the core _{N 1 = V / (D o} + t)
π, winding time T of the first winding core layer = (D _o + t) π / V, and one circumference L _o = (D _o + t) π of the first winding core layer.

Next, when the cutter roll is rotated at the same rotation speed as the winding core, the length of the perforation entering the sheet is as follows: when the winding core outer diameter D _o = the cutter roll diameter D ₁ , the rotation of the winding core Since the rotation of the cutter roll is the same according to the number, the rotation of the cutter roll is the same corresponding to the diameter wound on the core, and since there is one perforation in one rotation of the cutter roll, , And one perforation is made for each rotation of the winding roll. However, in this case, the diameter wound on the core increases gradually, and the rotation slows down.However, since the diameter of the cutter roll rotating in synchronization with the core is constant, it does not synchronize with the speed of the traveling sheet, and the core is When the winding diameter is increased by about 20%, the cutter roll tip speed of the cutter roll becomes slower as the number of rotations becomes slower, which causes perforations to be slightly dragged. Therefore, as shown in FIG. 7, when the sheet speed and the cutter roll tip speed are synchronized, the perforation becomes the thickness of the cutter blade as shown in (a), but when not synchronized, it is shown in (b). As described above, in the perforation, the difference between the sheet speed and the cutter tip speed is wider than the cutter blade thickness.

Therefore, in order to solve the above problems, it is necessary to synchronize the blade speed of the cutter roll with the sheet speed when making a perforation. However, synchronizing the rotation of the cutter roll and the sheet speed in this way is difficult at present without an appropriate mechanical device, and it has been virtually impossible to increase the sheet speed to 10 m / min or more.

[0011]

SUMMARY OF THE INVENTION The present invention addresses the above-mentioned situation, and finds that the speed of the tip of the cutter is increased or decreased. One rotation time of the cutter roll is determined by the diameter of the take-up roll. The speed of the tip of the cutter is increased / decreased during rotation and synchronized with the sheet speed only when perforating the sheet, eliminating perforations when perforating the sheet and equalizing the perforation throughout. In addition, the object is to increase the processing speed and improve the processing efficiency.

[0012]

That is, a feature of the method of the present invention that meets the above-mentioned object is that the rolled sheet is rewound from the surface layer and cut for each revolution. In the manufacturing process, the material sheet to be fed is passed between an upper cutter roll and a lower cutter receiving roller that rotate with respect to each other, and is cut by a cutter blade provided on the outer periphery of the cutter roll for each revolution of a take-up roll. In creating the winding roll with a perforation,
The rotation of the cutter roll and the rotation of the take-up roll are synchronized, and the speed of the tip of the cutter blade is increased / decreased in one rotation of the cutter roll, and the cutting edge speed of the cutter roll and the sheet feeding speed are synchronized only when perforating. On the point.

[0013] As a winding roll into which perforations are cut for each round, an adhesive roll sheet obtained by winding a sheet having an adhesive applied on one surface thereof onto a core with the adhesive surface as the front side. It is preferable to apply to the pressure-sensitive adhesive roll sheet by utilizing the above.

According to a third aspect of the present invention, there is provided an apparatus for carrying out the above-mentioned method, wherein the apparatus is provided between a raw sheet feeding apparatus, a winding apparatus for winding a processed sheet into a roll, and the above-mentioned apparatus. Including a perforation means for perforating the sheet, the perforation means comprises an upper cutter roll and a lower cutter receiving roller which rotate in conjunction with each other, and the cutter roll is a cutter protruding from a part of the outer periphery. It has a blade and is tuned by the take-up roll and the speed control motor, and in one rotation, the speed of the tip of the cutter can be increased / decreased via an increase / decrease mechanism.
It is characterized in that the cutting edge speed of the cutter roll and the sheet feeding speed are synchronized only when the tip of the cutter blade perforates the sheet.

A fourth aspect of the present invention is a specific configuration of the speed increasing / decreasing mechanism at the tip of the cutter blade in the above-mentioned device, which includes a concave-convex coupling, a cutter roll shaft is extended, and a driven inner guide groove at the leading end has a concave inner surface. A concave coupling is provided, and a convex coupling is provided to face the concave surface of the concave coupling. A drive pin that is fitted and moved in the guide groove of the concave coupling is provided, and a speed-controlled winding is performed between a pulley at a shaft end extending outward of the convex coupling and a pulley at an extension end of the take-up roll shaft. While a drive transmission mechanism by a take-off motor is provided, a feed screw interlocked by a convex coupling slide motor is engaged in the middle of the convex coupling shaft. When the drive pin of the convex coupling moves within the guide groove, the speed of the tip of the cutter blade is increased or decreased in one rotation of the cutter roll, and when the sheet is perforated, the blade speed of the cutter roll and the sheet speed are synchronized. It is characterized by being constituted.

[0016]

[Function] When a material sheet is passed between a cutter roll and a cutter receiving roller, perforated by a cutter blade of the cutter roll and wound on a core, the winding diameter wound on the core increases sequentially. The rotation speed of the sheet traveling at a constant speed gradually decreases. Therefore, if the same diameter as the winding core and the same rotation of the cutter roll with respect to the rotation of the winding core, the tip speed of the cutter blade is reduced by the reduced rotation speed.
Although the width of the perforation cut by the cutter blade becomes slower, the width of the perforations cut by the cutter blade becomes wider. If the cutter blade is not perforated by the cutter blade and the cutter blade is farther from the perforation position than the perforation, the cutter roll slows down as the winding diameter increases in synchronization with the take-up roll. The cutter blade tip acceleration / deceleration mechanism is activated as the eye is approached, and the cutting edge speed of the cutter blade tip is synchronized with the running speed of the sheet. Therefore, even if the sheet is fed at a constant speed, the perforations that are inserted per rotation of the take-up roll do not shift, that is, without increasing the perforation width, the perforations corresponding to the cutter blade thickness are formed. It is applied to

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic view showing the steps for carrying out the processing method of the present invention. In the present invention, a cutter blade 5 is provided on a part of the outer periphery of a sheet S sent from a material sheet feeder (not shown). The cutter S is provided with a perforated cutter S by rotating the cutter roll 4 and the cutter receiving roller 6 in association with each other by using a cutter roll 4 provided with the cutter roller 4 and a perforated cutter device having a cutter receiving roller 6 disposed below. And winding the same as a take-up roll 3 on a winding core 2 mounted on a winding shaft 1 sequentially in a roll form as a basic process.

Here, as the sheet S on which perforations are processed and applied, any sheet that requires perforations can be applied as needed. Particularly preferred sheets S include, for example, carpets and the like. Adhesive, such as a sheet forming a dust-removing adhesive roll for cleaning dust adhering to a surface, with a predetermined length of the adhesive surface Sa being wound up in a roll shape and removing one surface layer after use. An adhesive material is applied to the one surface used for the roll, and the sheet is made to travel with the adhesive Sa as a surface side. Therefore, in this specification, an example of a sheet mainly coated with the above-mentioned pressure-sensitive adhesive will be described. In the above-described apparatus, it is important that the core 2 and the cutter roll 4 rotate in synchronization with each other, and preferably have the same diameter, and the cutter roll 4 increases the traveling speed of the sheet by increasing the winding layer of the sheet wound on the core 2. Since it is constant, the rotation tends to become slower. That is, although the cutter roll 4 operating in synchronization with the core 2 has a constant diameter, the cutter roll 4 synchronizes with the core, but does not synchronize with the speed of the traveling sheet S. For example, if the winding diameter increases by 20%, the cutter roll 4 The speed of the tip end of the cutter blade 4 is slowed down as the rotation speed is slowed down.

Therefore, in the present invention, the cutter blade 5
When the leading end of the sheet comes into contact with the sheet S and the perforation is made, the cutting edge speed of the cutter blade 5 is synchronized with the traveling speed of the sheet. In other words, one rotation of the cutter roll is determined by the diameter of the take-up roll 3 wound on the core 2. When the sheet S is perforated by increasing or decreasing the speed of the cutter blade tip during this one rotation. Only a speed-up / down mechanism that synchronizes with the seat speed is installed.

FIG. 2 shows an example of such an acceleration / deceleration mechanism. In the drawing, reference numeral 11 denotes a winding shaft extending from the winding shaft 1, and 4a and 6a extend from the cutter roll 4 and the cut receiving roller 6, respectively. The cutter roll shaft 4a and the cut receiving roller 6a are respectively
Rotatably supported by bearings 8, 8 ', 7, 7'
Gears 10 and 9 that mesh with each other are provided at one shaft end, and rotate in conjunction with each other. In the above-described configuration, the driven side guide groove 2 is provided at the tip of the cutter roll shaft 4a as shown in detail in FIG.
A concave coupling 18 is attached with the concave surface having a 0 facing outward, and a convex coupling 17 is disposed to face the concave surface of the concave coupling 18.

The convex coupling 17 is connected to pulleys 23, ₂ by a separately provided convex coupling slide motor M2.
Feed screw 2 supported on bearing 21 interlocked with 2
4 allows the feeder to be moved right and left, and is attached to the shaft 15a via a bearing 16. A drive pin 19 is mounted slightly inward of the outer peripheral edge of the convex coupling, and the drive pin 19 is connected to the concave coupling. The driven-side guide groove 20 of the concave inner surface 18
Into the guide groove 2 along with the feed of the feed screw 24.
It is possible to move within 0.

The shaft 15a of the convex coupling 17
On the distal end side is mounted a pulley 15, which in the appropriate by an increase in the winding layer, through the pulley 13 from the speed control motor M ₁ for controlling the winding, and the pulley 1 winding axis first end
Rotation speed control motor M ₁ via a connecting member 14 which is Wataru設between 2 is adapted to be transmitted.

FIG. 4 shows an embodiment in which acceleration and deceleration are performed by the above-described concave and convex coupling configuration shown in FIG. 3. This will be described below.

In the drawing, r: length from the central axis of the convex cup on the convex coupling side to the drive pin. Ra ₁ , R
a ₂ : length from the concave coupling center axis on the concave coupling side to the drive pin, Ra ₁ is the longest length, R 2
a ₂ is the length of time the shortest. ΔR: moving length of the central axis of the concave coupling and the central axis of the convex coupling.

Based on the above points, when the central axis of the concave coupling and the central axis of the convex coupling are at the same position,
In FIG. 4A, the rotation on the concave side also makes one rotation at a uniform speed, while r = Ra. Then, when the central axis of the convex coupling moves by ΔR with respect to the central axis of the concave coupling (FIGS. B and C), first, when the concave coupling is + ΔR for one rotation of the convex coupling, r + ΔR = Ra ₁
Speed is the r / Ra _1, when the -ΔR, r-ΔR = Ra
_2, speed is the r / Ra _2.

That is, the speed during one rotation of the concave coupling changes by an amount ΔR by which the axis of the convex coupling has moved. However, in this case, one rotation of the concave coupling is one rotation for one rotation of the concave coupling. Accordingly, the speed of the convex coupling 17 is controlled by one rotation of the convex coupling 17, that is, the winding diameter of the take-up roll 3.
Is rotated, and during this one rotation, the axis of the shaft moves due to the movement of the drive pin, and the rotation speed of the concave coupling 18 increases or decreases accordingly. The perforation can be formed by the blade thickness of the cutter blade without shifting the perforation in synchronization with the sheet speed.

Thus, even when the sheet is wound and sequentially stacked with two layers and three layers, the length of one circumference is always maintained corresponding to the length that increases for each layer in each wound layer.
The sheet can be removed for each circumference. The use of the concave-convex coupling is an example of a mechanical transmission during one rotation, and the present invention is not limited to this, and a similar function can be achieved using a servomotor or the like.

[0029]

As described above, according to the present invention, the roll sheet is rewound from the surface layer, and is cut every one turn. One rotation of the cutter roll is determined by the diameter of the winding roll, but the speed of the tip of the cutter blade is increased / decreased during one rotation, and only when the perforation is made in the sheet, In order to synchronize with the sheet speed, conventionally, it does not synchronize with the speed of the running sheet as the winding diameter increases, the cutter tip speed of the cutter roll slows down, the perforation is slightly dragged, and the width of the perforation increases. The perforation has not been widened, and the perforation can be made evenly with perforations by the cutter blade thickness throughout, even though the winding diameter is increased. With an effect to improve the without machining efficiency reducing the machining speed. The present invention is effectively applied to an adhesive sheet roll for removing dust attached to a carpet or the like, but is not limited to this, and can be applied to other winding rolls requiring perforations as needed. .

[0030]

[Brief description of the drawings]

FIG. 1 is a view showing an outline of a sewing process according to the present invention.

FIG. 2 is a view showing an example of a mechanism for increasing and decreasing the speed of a cutter blade tip which forms a main part of the present invention.

FIG. 3 is an explanatory diagram showing a driving mode by the concave-convex coupling in FIG. 2;

FIGS. 4A and 4B are explanatory diagrams of a driving state by a concave-convex coupling, wherein FIG. 4A shows that the central axis of the concave coupling and the central axis of the convex coupling are at the same position, and FIG. (C) is a state diagram when the central axis of the convex coupling moves downward with respect to the central axis of the concave coupling when moving upward with respect to the central axis of the concave coupling. .

FIG. 5 is a perspective view showing an example of a pressure-sensitive adhesive sheet roll to which dust such as a carpet adheres.

FIG. 6 is an explanatory view showing a conventional perforation processing mode.

FIGS. 7A and 7B show perforations processed by a cutter blade. FIG. 7A shows a case according to the present invention, and FIG. 7B shows a case where a wide perforation is generated by conventional processing.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 reel shaft 2 core 3 take-up roll 4 cutter roll 5 cutter blade 6 cutter receiving roller 17 convex coupling 18 concave coupling 19 drive pin 20 driven guide groove S sheet m perforation M ₁ speed control motor M ₂ convex cup Ring slide motor

Claims (4)

[Claims] In a process of manufacturing a take-up roll to be used by rewinding a rolled sheet from a surface layer and cutting it for each revolution, an upper cutter roll for rotating a material sheet to be sent out with each other is provided. In forming a winding roll by inserting a perforation for cutting the winding roll by a cutter blade provided on the outer circumference of the cutting roll and passing it between the lower cutter receiving roller and forming the winding roll, In addition to synchronizing the rotation of the take-up roll, the blade tip speed of the cutter roll and the sheet feed speed are synchronized only when the perforation is made by increasing or decreasing the speed of the cutter blade tip in one rotation of the cutter roll. Perforation processing method. 2. An adhesive sheet roll obtained by winding a sheet having an adhesive applied to one surface thereof onto a core with a pressure-sensitive adhesive surface as a front surface side, as a winding roll having perforations for cutting every round. The perforation processing method according to claim 1. 3. A sewing machine comprising a material sheet feeder, a winding device for winding a processed sheet into a roll, and a perforation means installed between the above two devices and for perforating the sheet. The eye processing means comprises an upper cutter roll and a lower cutter receiving roller which rotate in conjunction with each other,
The cutter roll has a cutter blade protruding from a part of the outer periphery, and is operated in synchronization with the take-up roll and a speed control motor. In one rotation, the speed of the cutter tip is increased / decreased via an increasing / decreasing mechanism. A perforation processing apparatus characterized in that the cutting edge speed of the cutter roll and the sheet feeding speed are synchronized only when the tip of the cutter blade perforates the sheet. 4. The cutter blade tip-end accelerating / decelerating mechanism includes a concave-convex coupling, the cutter roll shaft is extended, and the tip is provided with a concave coupling having a concave inner surface and a driven side guide groove at the distal end. A convex coupling is disposed facing the concave surface of the ring, and the convex coupling is fitted into the guide groove of the concave coupling on the side of the convex coupling that is in contact with the concave coupling, slightly inside the outer peripheral edge of the convex coupling. A drive pin is provided in the guide groove, and a drive transmission mechanism of a speed-controlled winding motor is provided between a pulley at a shaft end extending outward of the convex coupling and a pulley at an extension end of the winding roll shaft. On the other hand, in the middle of the convex coupling shaft, a feed screw interlocked with a convex coupling slide motor is engaged, and the drive screw of the convex coupling is driven by the feed screw. In one rotation of the cutter roll moves in id groove, to increase or decrease the speed of the cutter blade tip,
4. The apparatus according to claim 3, wherein the cutting edge speed of the cutter roll and the sheet speed at the time of perforating the sheet are synchronized.
The perforation processing apparatus according to the above.