JP3270566B2 - Roll paper feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping paper supply device.

[0002]

2. Description of the Related Art FIG. 1 shows a cigarette feeder in a conventional cigarette maker. A wrapper 1 is wound around a bobbin 2, and the bobbin 2 is transferred to a cigarette maker 4 via a bobbin holder 3. It is detachably and rotatably mounted. Wrapping paper 1
Is supplied to the hoisting machine (not shown) of the tobacco manufacturing machine via the wrapping paper connecting portion 5 and the reservoir box 6, and travels while being guided in one direction in the hoisting machine. During this traveling process, the cigarette is supplied to the hoist, and the cigarette is wrapped in the wrapping paper 1 to continuously form a rod-shaped cigarette, that is, a tobacco rod. Thereafter, the tobacco rod is cut into predetermined lengths to form individual cigarettes.

The supply of the wrapping paper 1 from the pobin 2 is performed by rotating a pulling roller (delivery roller) 7 with the bobbin holder 3 rotatably supported.
That is, when the pooling roller 7 rotates, the wrapping paper 1 is pulled out and fed. The pulling roller 7 is connected to a servomotor via a gear, and controls the rotation speed of the servomotor to control the rotation of the wrapping paper 1.
Is adjusted to the rod speed of the hoist. On the other hand, a mechanical brake such as a band or a pad is incorporated in the bobbin holder 3 so that a braking force is applied according to the winding diameter, and a predetermined tension is applied to the wrapping paper 1 according to the winding diameter of the bobbin 2. Granted.

[0004] The paper roll remaining amount detection lever 8 is used for the paper roll 1 in use.
When the remaining amount of the bobbin 2 becomes equal to or less than a predetermined value, that is, when the winding diameter of the bobbin 2 becomes equal to or less than a predetermined value, a signal is output, and the control device (not shown)
When the signal is received, an alarm is generated to notify the worker, and the rotation speed of the pooling roller 7 is increased to feed out the wrapping paper 1 at a speed higher than the used amount and store it in the reservoir box 6. When the operator senses the alarm, the operator moves the bobbin holder 3 of the used paper roll 1 to the right as shown in the figure, and the bobbin 2 'on which a new paper roll 1' is wound at the location where the bobbin holder 3 is located (left side). The bobbin holder 3 ′ is mounted, and the starting end (tip) on which the double-sided tape is adhered is guided to the wrapping paper connecting portion 5 via a guide roller, and the wrapping paper 1 in use is
And preparation for connection with the new paper roll 1 '. That is, the operator attaches the starting end of the new wrapping paper 1 ′ onto the wrapping paper 1 in use at the connecting portion 5 and separates the wrapping paper 1 from the pasting portion to complete the connection work.

[0005] As described above, the roll paper remaining amount detecting lever 9 detects the roll paper diameter of the in-use bobbin 2 shifted to the right, and when the remaining amount of the roll paper 1 further decreases and reaches a predetermined amount, the control is performed. The apparatus stops the pooling roller 7, temporarily suspends the feeding of the wrapping paper 1, and performs a connection operation of the wrapping paper. During the connection of the new and old papers, the paper stored in the reservoir box 6 is supplied to the hoist, and the winding operation is executed without interruption. Then, the holder 2 that has been emptied by being moved to the right is removed from the apparatus together with the bobbin holder 3.

[0006] When a predetermined time has elapsed after the completion of the connection operation, the pooling roller 7 is driven again to increase the rotation speed to a predetermined rotation speed (steady rotation speed), and the feeding of a new paper roll 1 'is started. Note that the position of the connected doubled wrapping paper is confirmed by the wrapping paper seam detector, and the wrapped cigarettes (for example, five) of the part are automatically eliminated. Such operations are repeatedly performed, and the production of tobacco is continuously performed.

[0007]

However, in the above-mentioned conventional paper supply apparatus, when the remaining amount of the used paper becomes small, the operator moves the bobbin holder 3 from the initial setting position as shown in FIG. After the movement, the new bobbin holder 3 'on which the new paper roll 1' is wound is set, that is, the bobbin is replaced by a bobbin chuck unit, and a new paper roll is supplied and connected from one position (left side). I can only do it. Furthermore, since the bobbin holder is moved and mounted by a person and the set position of the bobbin holder is not fixed, the bobbin holder cannot be taken in and out from the outside. Therefore, it is difficult to automate the paper supply.

Further, since a mechanical brake is used for braking the bobbin holder, it is difficult to set an accurate braking force, and it is difficult to stabilize the tension force applied to the wrapping paper. It is difficult to achieve. Furthermore, the mechanical brake has many wear parts, and thus has a problem that maintenance and inspection are troublesome. The present invention has been made in view of the above points, and has a bobbin with a fixed type.
A roll paper supply device that enables the supply of roll paper from any side, enables accurate setting of the braking force using an electric brake, and aims to automate and speed up the roll paper supply. The purpose is to provide.

[0009]

According to the present invention, in order to achieve the above object, a rotating shaft is provided at a distance from a side wall of a device.
It is installed side by side so that it can rotate freely.
The paper reel is removably clamped with the holder
Two fixed bobbins that can supply paper,
And the diameter of the holder is expanded so that the reel
A bobbin that clamps and reduces the diameter to release the clamp
Clamp mechanism, mounted on any of the bobbins
Pooh that unwinds the paper from the paper reel and supplies it downstream
A ring roller and a roller disposed downstream of the pooling roller.
Reservoir box for temporarily storing rolled and fed rolls
Between the downstream side of the two bobbins and the pooling roller.
Between the used paper roll and the beginning of the new paper roll.
Continue to connect the paper roll in use
And a connecting portion connected to a rotating shaft of the bobbin via a gear system.
The diameter of the paper wound on the paper reel is electrically controlled.
A detector for detecting the rotation of the bobbin through a gear system.
Powder shake that applies braking force to the rotating shaft
Receiving the signal from the detector and the powder brake
To apply a braking force corresponding to the diameter of the paper roll,
When the remaining amount of wrapping paper falls below a certain level, the pooling roller
Is rotated at a high speed to remove the used paper roll from the reservoir.
After storing in the box, pause
To stop the bobbin,
While the roller is stopped, the paper web connection is driven.
Connect the used paper roll to the beginning of the new paper roll
Cut off the connecting part of the paper roll in use and
The wrapping reel can be attached and detached by driving the clamp mechanism
And a control device .

[0010]

The wrapping paper can be mounted separately on each of the two bobbins, and since these bobbins are fixed, the mounting of the wrapping paper can be automated. When the remaining amount of the paper roll on one bobbin is low, a new paper roll is mounted on the other bobbin, and a new paper roll is connected to the used paper roll.
In this way, new bobbins are alternately mounted on the two bobbins and the bobbins are supplied. An optimal braking force is applied to the bobbin by the powder brake , and the tension force of the wrapping paper is stabilized. When the amount of paper in use falls below a certain level,
Rotate the ring roller at high speed to remove the used paper roll.
After storing in the reservoir box, pause
Activate the waste brake to stop the bobbin,
While the pooling roller is stopped, drive the paper roll
To connect the used roll to the beginning of the new roll.
Disconnect the connecting part of the used paper roll and
The wrapping reel can be attached and detached by driving the clamp mechanism
And As a result, automation and speeding up of wrapping paper supply are achieved.
Can be

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 2, the paper supply device 10 is, for example,
It supplies paper to a tobacco manufacturing machine, and comprises two fixed paper bobbins 1 arranged side by side on a side wall 11 at predetermined intervals.
2, 12 'and a knob 13, 1 for adjusting the running position of the wrapping paper.
3 ′, automatic paper roll connection device 14, and pooling roller 1
5 and a reservoir box 16, etc.
Reels 17, 17 'around which the paper rolls 1, 1' are wound are respectively detachable from the bobbins 12, 12 '.
Reference numeral 4 connects the used wrapping paper to a new wrapping paper, and disconnects the connecting portion of the used wrapping paper. Pooling roller 15
Is fed by a speed matching the rod of the hoisting machine and fed into the reservoir box 16 through the winding paper connecting portion 14, and the rolled paper in the reservoir box 16 passes through the printing unit and is wound up by the hoisting machine (both illustrated). )).

The bobbin 12 for wrapping paper is constructed as shown in FIGS. 3 and 4, the front end of the outer cylinder 20 is fitted into a large-diameter hole 11a formed in the side wall 11, and the outer peripheral surface is formed. Is fixed to the side wall 11 by a bolt, and a key groove 20a is formed on the inner surface along the axial direction.
(FIG. 4), but an annular groove 2 is formed on the outer peripheral surface of the rear end along the circumferential direction.
0b is provided. The inner cylinder 21 is fitted in the outer cylinder 20, and a key 21 a that fits into the key groove 20 a is fixed to the outer peripheral surface, so that the inner cylinder 21 can slide in the outer cylinder 20 in the axial direction and cannot rotate. Mated. A screw 21b is engraved at the rear part of the outer peripheral surface of the inner cylinder 21, and a large-diameter flange 21c is formed at the rear end. This flange 21
c is a holder that supports an electric brake, for example, a powder brake 50, an actuator, for example, an air cylinder 51, and a rotation detector, for example, a rotary encoder 52, which will be described later.

The toothed pulley 22 has a large-diameter annular shape, and is provided with a screw 2 of the inner cylinder 21 through a screw 21b formed on the inner peripheral surface.
1b (FIG. 4), and an annular flange 22a protruding in the axial direction all around the outer peripheral edge of the front end face.
The plurality of pins 2 face the radially inward of the toothed pulley 22 and are screwed at equal intervals along the circumferential direction.
The tip of 3 is slidably fitted in the annular groove 20b of the outer cylinder 20. As a result, the inner cylinder 21 is
Is rotated so that it can slide back and forth in the axial direction.

The rotating shaft 24 is rotatably supported in the inner cylinder 21 via bearings 25 and 25 as shown in FIGS. 4 and 5, and the bearings 25 and 25 are slid by the inner cylinder 21 in the axial direction. Is slid in the axial direction. This rotating shaft 24
Is formed as a hollow shaft, and a large-diameter and thick flange 24a is formed at the front end so as to form a step.
A plurality of holes 24b, for example, four holes are radially formed in the outer peripheral surface at a regular interval in the radial direction and in the circumferential direction.
A gear 26 is fixed to the rear end of the rotating shaft 24. A shaft 27 is inserted into the rotary shaft 24 via a bearing so as to be rotatable relative to the rotary shaft 24 and slidable in the axial direction. It is rotatably mounted via. The tapered cam 28 has a cylindrical surface having a constant diameter at a rear portion from a substantially central portion, and a tapered surface having a front portion reduced in diameter toward a front end.

Each hole 24b of the flange 24a of the rotating shaft 24
As shown in FIG. 5, a shaft 31 is slidably fitted into each of the shafts 31. A slit 31a is provided on the outer surface of the shaft 31 along the axial direction. The proximal end of the shaft 31 faces the tapered cam 28 with a slight gap by loosely fitting the hole of the spring seat 32, and a roller 33 is attached to the proximal end by a shaft bolt 34 and a nut 35 (FIG. 7). It is rotatably supported. A spring 36 is contracted between the spring seat 32 and the head of the shaft bolt 34 and the outer peripheral surface of the nut 35 as shown in FIG.
The shaft 31 is drawn inward, and the roller 33 is rollably pressed against the tapered cam 28.

As shown in FIGS. 5 and 6, a holder 37 having a substantially quadrant arc shape is fixed to the tip of the shaft 31 by a bolt 38 at the center thereof. In the slit 31a of the shaft 31, the other end of the pin 39 whose one end is fitted in a hole 24c formed in the end face of the flange 24a is slidably fitted. Thereby, the shaft 31 is connected to the flange 2
In the hole 24b of 4a, it is slidable in the center direction of the rotating shaft 24 and cannot rotate. Then, the roller 33 rolls with respect to the axial movement of the taper cam 28, and accordingly, the shaft 31 rotates in the hole 24c of the flange 24a.
4, the holder 37 expands or contracts in diameter.

A large-diameter protective disk 4 for protecting the wrapping paper is provided on the rear end face of the flange 24a facing the side wall 11.
1 is fixed. Then, these rotating shaft 24, shaft 27, taper cam 28, shaft 31, holder 3
7 and the air cylinder 51 constitute a bobbin clamp mechanism. Referring back to FIG. 3, the flange 21 at the rear end of the inner cylinder 21
A support plate 45 is fixed to c at a predetermined interval, and the powder brake 50, the air cylinder 51, and the rotary encoder 52 are fixed to the support plate 45 as described above. Note that the air cylinder 51 is supported by the support plate 46.
Is fixed to the support plate 45 (FIG. 8). The powder brake 50 has an input shaft 50a fixed to a support plate 46 via a bracket 47, a gear 53 fixed to an output shaft 50b, and the gear 53 meshes with the gear 26 of the rotary shaft 24. ing.

The air cylinder 51 includes a rod 54 (FIG. 4).
Is loosely fitted in the rotating shaft 24 and connected to the rear end of the shaft 27. A return spring 55 (FIG. 4) is contracted between the flange provided at the tip of the rod 54 and the support plate 46. This air cylinder 51
Is connected to an air source (not shown). A gear 56 is fixed to the rotation shaft of the rotary encoder 52, and the gear 56 meshes with the gear 26 (FIG. 3) of the rotation shaft 24. The powder brake 50 and the rotary encoder 52 are electrically connected to a control device (not shown).

The input side (drive member) and the output side (driven member) of the powder brake 50 are arranged on a concentric cylinder with a powder gap therebetween, and the input and output sides are freely rotatable with each other. The powder gap is filled with a powder (magnetic iron powder) having a high magnetic permeability, and an excitation coil is arranged on the outer periphery so as to allow a magnetic flux to pass through the powder. When the input side is rotating without excitation, the powder is pressed against the operating surface of the input side by centrifugal force, and the input side and the output side are not connected at all. Therefore, torque is transmitted from the input side to the output side. Not done. When the exciting coil is excited, the powders are linked in a chain along the generated magnetic flux, and torque is transmitted from the input side to the output side by the coupling force between the powders and the frictional force between the powder and the operating surface at this time. You. The torque can be controlled by adjusting the exciting force of the exciting coil, that is, the exciting current.

As described above, the input side of the powder brake 50 is fixed, and the output side is meshed with the gear 26 of the rotating shaft 24 via the gear 53. Therefore, the output side torque is adjusted by adjusting the exciting current. That is, the braking force applied to the rotating shaft 24 can be arbitrarily controlled. That is, the powder brake 50 can set a braking force with higher accuracy than a mechanical brake, and can stably apply an optimal tension to the wrapping paper. In addition, it has excellent wear resistance and is easy to perform maintenance and inspection.

The travel position adjustment knob 13 (FIG. 3)
It penetrates the hole 11b of the side wall 11 and is rotatably supported via a bearing 57. A toothed pulley 58 is fixed to the rear end. A toothed belt 59 is stretched between the toothed pulley 58 and the toothed pulley 22 screwed to the inner cylinder 21 of the bobbin 12. This adjustment knob 1
By rotating the pulley 3, the toothed pulley 22 rotates via the toothed belt 59, and the inner cylinder 21 moves in the axial direction with respect to the outer cylinder 20, that is, the bobbin 12 moves back and forth. Thereby, the running adjustment of the wrapping paper can be performed. The bobbin 12 'and the traveling position deviation adjusting knob 13' are also configured in the same manner as the bobbin 12 and the traveling position deviation adjusting knob 13.

Referring to FIGS. 9 to 11, an automatic wrapping paper connecting apparatus 1 is shown.
4 are guide rollers 60, 60 'on the upper front surface of the side wall 11.
However, guide rollers 61 and 61 ′ are arranged in the lateral direction at predetermined intervals at substantially the center, respectively.
Guide plates 62, 62 ′ are disposed immediately below the position 0 ′, and the guide plate 62 is moved from the guide roller 60 to the guide roller 61 by the guide plate 62 ′.
Are 2 from the guide roller 60 'to the guide roller 61, respectively.
The wrapping papers 1 and 1 'are guided as shown by a dotted line. Guide plates 62, 62 'and guide rollers 61,
A clamp mechanism 65 and a cutter mechanism 66 are arranged between the control mechanism 61 'and the speed controller 67.

The clamp mechanism 65 includes a pair of left and right press blocks 70, 70 ', and these press blocks 70, 70'.
Sliders 71, 71 '(FIG. 1)
0, FIG. 11), and an actuator for driving the sliders 71, 71 ', for example, an air cylinder 72 or the like. The press blocks 70, 70 ′ are slidably mounted on rails 76, 76 horizontally fixed to the front surface of the side wall 11. In the press block 70, a front end portion facing the press block 70 'is made of, for example, a hard rubber member having a certain degree of elasticity, and a large number of small holes 70a are formed in the end surface (FIG. 10), and on the back side. One end of the air pipe 74 is connected. This air pipe 74
Is connected to each of the small holes 70a, and the other end is connected to a vacuum device (not shown). The air is sucked from each of the small holes 70a to adsorb and hold the end of the wrapping paper. ing. The press block 70 'is configured similarly to the press block 70.

On the back surface of the side wall 11, a support base 75 is provided substantially at the center.
(FIGS. 10 and 11) are fixed, and the support
On the upper side, two rails 76, 76 are fixed horizontally in the left-right direction and parallel at predetermined intervals. On these rails 76, sliders 71, 71 'are provided so as to be slidable and not to deviate. Each slider 71,
71 ′ are elongated holes 11c, 11c ′ formed in the side wall 11.
And is fixed to each of the corresponding press blocks 70, 70 '. As a result, the press blocks 70, 70 '
Moves integrally with the sliders 71, 71 '. The air cylinder 72 is disposed vertically, the upper end is fixed to the lower center of the support base 75, and the bracket 78 is fixed to the tip of the rod 77.

Each of the connecting rods 79, 79 'has one end connected to the bracket 78, and the other end connected to the sliders 71, 71', respectively. Air cylinder 72
When extended, the slider 71, as shown in FIGS.
The slider 71 'is moved to the left and right to separate it, and at the time of shortening, the sliders 71 and 71' are pulled toward the center to press the end faces facing each other. The air cylinder 72 is connected to an air source (both not shown) via a manually operated valve for adjusting a flow rate.
Connected to. The manually operated valve is electrically connected to the control device, and can manually drive the air cylinder 72 in a predetermined operation state.

As shown in FIGS. 9 to 12, the cutter mechanism 66 includes a rotary shaft 80, a front knife 81, an actuator such as a rotary cylinder 82, gears 83 to 85, and rear knives 86 and 86 '. 13 and 14, a screw hole 80b is formed in the end face of the rear portion 80a, and a slit 80d is formed in the front portion 80c along the axial direction and in the diametrical direction. Is engraved with screws. The rotating shaft 80 has one side 80a on the left and right press blocks 70, 7 on the side wall 11.
Hole 11d formed in the middle of 0 'and slightly above
(FIG. 12) is rotatably supported via a support member 90 and a bearing 91, and a gear 83 is fixed to a rear end by a bolt 92 screwed into the screw hole 80b.

A cylindrical holder 93 is fitted on the front portion 80c of the rotating shaft 80. The holder 93 has a slit 93a, screw holes 93b, 93b, and bolt holes 9 corresponding to the slit 80d of the rotating shaft 80 as shown in FIGS.
3c and 93c are formed, and a pin hole 93d is drilled at the end in the diameter direction. The front knife 81
As shown in FIGS. 17 and 18, the rotary shaft 80 and the slits 80 d and 93 a of the holder 93 can be fitted and inserted, a blade 81 a is formed at a lower portion, and screw holes 81 are formed at both ends of an upper portion 81 b.
c, 81c are drilled.

The holder 93 has a rotating shaft 80 as shown in FIG.
The slit 80d is fitted over the front part 80c of the
The upper part 3b of the front knife 81 is inserted into the slit 93a. Holder 93
A support plate 94 is fixed to the upper part by bolts 95, 95 screwed into the screw holes 93b, 93b. Bolt holes are formed in the support plate 94 at positions corresponding to the bolt holes 93c of the holder 93.

The bolts 96 pass through the bolt holes of the support plate 94 and the bolt holes 93c of the holder 93, respectively.
The front knife 81 is screwed into the screw holes 81c, 81c of the front knife 81 to support the height of the front knife 81 in an adjustable manner. These bolts 96, 96 are respectively fixed nuts 9
7, 97 fixed. The pin 98 passes through the slit 80 d of the rotating shaft 80, and the both ends thereof
3d, the holder 93 is non-rotatably locked to the rotating shaft 80. A cap 9 is provided at the tip of the rotating shaft 80.
9 is screwed.

Returning to FIG. 10, on the back side of the side wall 11, a rotary cylinder 8
2, a gear 85 is fixed to the front end of the rotating shaft. The gear 85 meshes with the gear 83 of the rotating shaft 80 via the idle gear 84. The idle gear 84 is supported by the support member 90 as shown in FIG. The base end of the arm 101 is fixed to the rear end of the rotary shaft of the rotary cylinder 82 as shown in FIG.
An adjustment bolt 102 is screwed and fixed to the tip of the arm 101.

On the other hand, a stopper 103 capable of locking the adjustment bolt 102 is fixed to the support table 100.
At a predetermined rotation position (rotation end position) of the rotary cylinder 82, the head 102a of the adjustment bolt 102 is brought into contact with and locked at the position. The rotary cylinder 82 is connected to the air source and is rotatable by approximately 90 degrees.

The rear knives 8 are provided on the upper surfaces of the press blocks 70 and 70 'of the clamp mechanism 65 (FIG. 9).
6, a front knife 8 provided with a rotary shaft 80
It is arranged facing one blade 81a. These rear knives 86, 86 'cooperate with the front knife 81 to cut the wrapper 1' or 1 when the press blocks 70, 70 'slide.

The operation will be described below. First, the case where the reel 17 around which the wrapping paper 1 is wound is mounted on the bobbin 12 on the right side of FIG. 2 will be described. 3 and 4, when air is supplied to the air cylinder 51 of the bobbin clamping mechanism of the bobbin 12, the rod 54 is retracted, and the shaft 2
7 moves rightward in the figure, and the taper cam 28 retreats accordingly. When the tapered cam 28 retreats, each shaft 31 of the rotary shaft 24 is pulled inward in the radial direction by the spring force of the spring 36 (FIG. 7), and each holder 37 (FIG. 6).
Is reduced in diameter. Thereby, the reel (core) to the bobbin 12
17 can be mounted.

Next, the reel 17 around which the wrapper 1 is wound is mounted on the holder 37, and air is supplied to the air cylinder 51. When air is supplied, the air cylinder 51
4 is pushed out, the shaft 27 moves to the left in the figure, and accordingly, the tapered cam 28 is pushed out forward. When the tapered cam 28 is pushed out, each shaft 31 is pushed out in the radial direction against the spring force of the spring 36, and each holder 37 expands its diameter to fix (clamp) the reel 17. Thus, the operation of mounting the reel 17 on the bobbin 12 is completed.

The bobbin 12 is of a fixed type, so that the work of attaching and detaching the reel 17 to and from the bobbin 12 can be automated using a robot. Similarly, the reel 17 'on which the wrapping paper 1' is wound is mounted on the left bobbin 12 '. During the operation, the clamp operation cannot be manually performed on the bobbin on the use side. Then, the reel 1 mounted on the bobbin 12 on the right side of FIG.
7 is passed through the connecting portion 14 and the pooling roller 15
, And sent to a hoist (not shown) via the reservoir box 16. At this time, the connecting portion 14
The air cylinder 72 of the clamp mechanism 65 is extended as shown in FIGS. 9 and 11, and the press blocks 70 and 70 '
Are located on the left and right and are separated. Also, the cutter mechanism 66
The front knife 81 is opposed to a rear knife 86 fixed to the left press block 70.

The wrapping paper 1 passes through the guide roller 60, the guide plate 62, the press block 70 and the front knife 81 with a slight gap, and the guide roller 61.
To the pooling roller 15 (FIG. 2) via the guide roller 61 '. Pooling roller 15
Is driven through a gear by a servomotor (not shown), and feeds out the wrapping paper 1 at a speed corresponding to the rod speed of the hoisting machine by controlling the rotation speed of the servomotor.

When the wrapping paper 1 is fed, the bobbin 12, ie, the rotating shaft 24 is rotated, and the powder brake 50 and the gear 56 are rotated by the gear 26 fixed to the rotating shaft 24 in FIG. Via rotary encoder 5
2 rotates. The rotary encoder 52 is mounted on the reel 17.
A change in the winding diameter of the wrapping paper 1 wound on the paper is detected, and a corresponding signal is added to the control device. The control device controls the braking force of the powder brake 50 so as to provide an optimum brake according to the wrapping diameter. Then, an optimal tension is applied to the bobbin 12, that is, the wrapping paper 1. Thereby, the tension applied to the wrapping paper 1 is stabilized.

The braking force of the powder brake 50 is, for example, large (outer diameter 550 to 400) according to the winding diameter of the wrapping paper 1.
φ), medium (400-300φ), small (300-190)
(φ) is controlled in three stages. Also, the brakes at low speed, high speed, stop, and stop are respectively controlled. Since the powder brake 50 is controlled by the electromagnetic force, the wear is small and the maintenance and inspection are easy.

When the remaining amount of the wrapping paper 1 in use becomes equal to or less than a predetermined value (for example, a reserve diameter of 176 to 178φ), the control device controls the wrapping paper 1 at a speed higher than the usage amount (for example, 20% higher than usual). (Addition) (FIG. 23)
(A)), it is stored in the reservoir box 16 (FIG. 2).
At this time, the reel 17 'around which the new paper 1' is wound is mounted on the left bobbin 12 '. The mounting of the reel 17 'on the bobbin 12', that is, the bobbin clamping is automatically performed by a robot or the like. As shown in FIG. 19, this wrapping paper 1 'has a double-sided tape 110 adhered to one side of a start end 1'a. At this time, the press block 70, 70 'is suctioned by the vacuum device through the air hoses 74, 74', and the outside air is sucked from each small hole on the end face. 1′a can be adsorbed. Therefore, the operator prepares the connection by suction-holding the opposite side of the start end 1'a to the double-sided tape 110 to the end face of the press block 70 '(FIG. 19).

When the remaining amount of the paper roll 1 on the reel 17 is further reduced, the pooling roller 15 stops (FIG. 23).
(A)) The feeding of the wrapping paper 1 from the reel 17 is temporarily stopped, and a connection operation with a new wrapping paper 1 'is performed. That is,
When the pooling roller 15 stops, the air cylinder 72
(FIG. 11) is driven (turned on) (FIG. 23 (b)) and retreats, whereby the press blocks 70 and 70 'move in the directions of arrows A and A' in FIG. The rear knife 86 fixed to 70 cooperates with the front knife 81 to cut the wrapping paper 1 by sliding.
Then, at the same time as the cutting, the end 1a of the cut rolled paper 1 is cut.
Is sucked and held on the end face of the press block 70 by a suction force.

The press block 70 'approaches the starting end 1'a of the wrapping paper 1' while adsorbing and holding the end 1a of the wrapping paper 1 respectively. As shown in FIG. Are brought into contact with each other, and the starting end 1′a of the wrapping paper 1 ′ and the ending end 1a of the wrapping paper 1 are connected by pressure bonding with a double-sided tape 110. Next, the air cylinder 72 is driven (turned off) (FIG. 23B) to extend, and the press block 7 is extended.
0, 70 'move away from each other in the directions of arrows B, B' in FIG. 22 to open the wrapping paper 1, 1 '. Then, the press blocks 70, 70 'return to their original positions. At the same time, the rotary cylinder 82 of the cutter mechanism 66 (FIG. 9) is inverted, and the shaft 80 is rotated in the direction of arrow C in FIG. 22 to switch the front knife 81 (FIG. 23 (c)) and fixed to the press block 70 '. And stands by in preparation for the next connection.

When the connection between the wrapping papers 1 and 1 'is completed,
The pooling roller 15 is driven to rotate (FIG. 23)
(A)), a new paper roll 1 'is fed out. The position of the double-wrapped portion of the wrapping paper including the end 1a of the connected wrapping paper 1 and the starting end 1'a of the wrapping paper 1 'is confirmed by a wrapping seam detector, and the W-roll inspection cutting drum unit (both not shown) ) Are automatically excluded from the plurality (for example, 5).

When the remaining amount of the wrapping paper 1 'mounted on the bobbin 12' becomes small, the bobbin 12 '
, A new wrapping paper is attached, the starting end of the new wrapping paper is connected to the used wrapping paper 1 ′, and the wrapping paper 1 ′ is cut. In this way, new bobbins are alternately mounted on the bobbins 12, 12 ', and the bobbins are continuously supplied. Each bobbin 12, 12 'of the wrapping paper
The mounting on the motor, the start of the reserve, the connection operation, etc. are controlled by signals from the timing disk provided on the back side of the pooling roller 15 and the rotary encoders 52 (only one side is shown) mounted on the bobbins 12, 12 '. Controlled by the device. This makes it possible to automatically supply and connect the wrapping paper to the bobbins 12, 12 'simply by making simple preparations.

[0044]

As described above, according to the present invention, 2
The two fixed bobbins are arranged side by side, and a paper reel is
A holder to be clamped and a paper roll
To release the clamp by clamping
By providing the unclamping mechanism, the paper roll can be supplied from any of the bobbins, and the mounting of the paper roll on the bobbin can be automated. Also,
The powder brake on the bobbin can be set with high precision braking force, that and Do can impart optimum tension to the paper wrapper. The remaining amount of used paper is
When the speed falls below a certain level, rotate the pooling roller at high speed to
Pause after storing used paper in the reservoir box
And activate the powder brake to
While the pooling roller is stopped.
Then, the paper roll connection part is driven so that the used paper roll and the new paper
Connect the beginning of the paper to
Separate and drive the bobbin clamp mechanism to roll the paper
Removable reels allow for automated paper roll supply
In addition, there is an excellent effect that the speed can be increased and the productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of a conventional paper wrapping apparatus of a tobacco manufacturing machine.

FIG. 2 is a front view showing an outline of a paper roll supply device according to the present invention.

FIG. 3 is a cross-sectional view of the paper roll supply unit of FIG. 2;

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is an enlarged view of a main part of FIG. 4;

FIG. 6 is a partially cutaway front view of the paper bobbin of FIG. 2;

FIG. 7 is an enlarged view of a main part of FIG. 6;

FIG. 8 is a rear view of FIG. 3;

FIG. 9 is a front view of the automatic paper wrapping device shown in FIG. 2;

FIG. 10 is a sectional view taken along the line XX in FIG. 9;

FIG. 11 is a rear view of FIG. 9;

FIG. 12 is an enlarged view of a main part of the cutter mechanism of FIG. 10;

13 is a front view of a shaft of the cutter mechanism of FIG.

FIG. 14 is a plan view of FIG.

FIG. 15 is a bottom view of the holder of the cutter mechanism of FIG. 10;

FIG. 16 is a sectional view taken along the arrow line XVI-XVI in FIG.

FIG. 17 is a partially cutaway front view of a front knife of the cutter mechanism of FIG. 10;

18 is a bottom view of FIG.

19 is a diagram illustrating a state in which the connection of the wrapping paper is started while the starting end of a new wrapping paper is held at the connection portion in FIG. 9;

20 is a diagram showing a state in which the paper in use in FIG. 19 is cut.

21 is a diagram illustrating a state in which a new wrapper is connected to the wrapper in use in FIG. 20;

FIG. 22 is a diagram showing a state in which the connection of the wrapping paper of FIG. 20 has been completed;

FIG. 23 is a diagram showing a time chart of a connection operation of the wrapping paper in the wrapping paper supply device of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Paper roll 10 Roll paper supply device 11 Side wall 12, 12' Roll paper bobbin 13, 13 'Roll paper front-back adjustment knob 14 Automatic roll paper connection device 15 Pooling roller 16 Reservoir box 17, 17' Bobbin 24 Rotary shaft 27 Shaft 28 Taper cam 37 Holder 50 Powder brake 51 Air cylinder 52 Rotary encoder 65 Clamp mechanism 66 Cutter mechanism 67 Speed controller 70, 70 'Press block 71, 71 Slider 72 Air cylinder 81 Front knife 86, 86' Rear knife 110 Double-sided tape

Claims (1)

(57) [Claims] 1. A rotating shaft is rotated at a distance on a side wall of a device.
Equipped side-by-side, the end is provided with an expandable / reducible diameter
The paper reel is detachably clamped with a
Two fixed bobbins that can be supplied and the bobbin housed in the rotation shaft,
Clamp the paper reel, reduce the diameter and release the clamp.
A bobbin clamp mechanism for removing the bobbin from a bobbin reel mounted on any of the bobbins.
A pooling roller that feeds out the paper and supplies it to the downstream side, and is disposed downstream of the pooling roller and fed out.
Between the reservoir box for temporarily storing the roll paper and the pooling rollers downstream of the two bobbins
Connects the placed and used roll to the beginning of a new roll
And a paper roll connection for disconnecting the used paper after the connection part.
Part, and a rotating shaft of the bobbin connected via a gear system.
A detection device that electrically detects the diameter of the paper roll wound on the paper reel
And a rotating shaft of the bobbin via a gear system.
A powder brake for applying a braking force to the spindle, and actuating the powder brake in response to a signal from the detector.
And applying a braking force in accordance with the diameter of the wrapping paper.
When the remaining amount falls below a certain level, the pooling roller
Rotate the used wrapping paper into the reservoir box
After storing, pause and activate the powder brake.
The bobbin is stopped by moving
While the paper is stopped, the paper roll connection is driven to
Connect the used paper and the beginning of the new paper to
Of the wrapping paper and the bobbin clamp
System that enables the paper reel to be attached and detached by driving the
And a control device .