JPH0217456B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic switching device for packaging members, and more specifically, it unwinds a packaging member from a bobbin wound with the packaging member, cuts it into a predetermined size, and packages it. The present invention relates to a device for feeding a packaging material to a machine, which switches the packaging material from one bobbin to the other bobbin while it is being fed out.

[Conventional technology]

Conventionally, as this type of device, for example, Japanese Patent Application Laid-open No. 49-
The one disclosed in No. 76696 is known. In this device, when the knife installed between one bobbin and the cutting knife cuts the packaging material being fed out from the bobbin, the tip of the packaging material of the other bobbin, which has been set in a predetermined position, cuts into the one bobbin. The cutting end (rear end) of the packaging member is run so as to switch to the other bobbin side.

However, at the time of switching, there is a time delay until the other bobbin starts to rotate from a stopped state, rotates at a predetermined speed, and the tip of its packaging member runs following the cut end of the packaging member of one bobbin. There was a problem that the switching timing was off.

For this reason, when used in a packaging material supply device that feeds patterned packaging materials, such as cigarette wrappers or paper, by matching the patterns and cutting them to a predetermined size, the pattern may shift during switching, resulting in defective products. There was a problem that occurred.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned problems, and its first purpose is to run one packaging member that is running low and the other new packaging member at approximately the same speed;
The purpose of the present invention is to provide an automatic switching device for packaging members that does not cause a timing shift during switching by automatically correcting the timing shift between the two, and a second purpose is to control the main knife roller and the switching knife roller at the same timing. When the cut ends of both packaging members are positioned on the switching knife roller, a gap is created between the cut ends of both packaging members, so that short pieces are not generated due to double cutting.

[Means for solving problems]

In order to achieve the above-mentioned first object, the present invention provides an automatic switching device for packaging members, which is equipped with a plurality of bobbins wound with packaging members, and switches to the other bobbin while the packaging member is being fed out from one bobbin. a winding roller device that sometimes winds up the packaging member of the other bobbin and rotates the other bobbin; a detector that detects a pattern applied to the packaging member of the one bobbin; a mark detector that detects a pattern attached to a packaging member;
An increasing/decreasing mechanism that increases or decreases the traveling speed of the packaging member of the other bobbin while the winding roller device is running based on the signals from these mark detectors; a switching knife device that simultaneously cuts the packaging material of the other bobbin that is running and the packaging material of the one bobbin that is being fed out by the winding roller device when it is detected that the patterns of the packaging materials match; The cutting edge of the packaging member of one bobbin cut by the switching knife device is followed by the cutting edge of the packaging member of the other bobbin.

In addition, in order to achieve the second object, an automatic switching device for packaging members that cuts both packaging members at the same time and feeds the cut ends of both packaging members to the main knife by a feed roller. An increasing/decelerating mechanism for increasing/decreasing the running speed of the feed roller is provided so that the cut edges of both packaging members fed by the feed roller create a gap between them at the main knife roller.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an outline of the entire packaging material supply device equipped with the automatic packaging material switching device of the present invention, and FIG. 2 shows a power transmission path of the packaging material supply device.

In the figure, reference numerals 1 and 101 are bobbins, and 2 and 10 are patterned packaging members.

The packaging member 2, 102 is given a feeding force by the feed roller 3 and the receiving roller 4, is pulled out from the bobbin 1, 101, and is guided to the automatic switching device of the present invention by the direction changing feed roller 5, 105 and the receiving roller 6, 106, After passing through this, the material is cut into a certain size by the main knife roller 7 and knife receiving roller 8, coated with glue, and sent to the packaging process.

The automatic switching device of the present invention includes a first winding roller device (consisting of a switching feed roller 9, a receiving roller 10, a gathering roller 11, a suction separation roller 14, and a winding roller 15) that winds the packaging member 2 of the bobbin 1; A second winding roller device (switchable feed roller 10
9, a receiving roller 110, a collection roller 111, a suction separation roller 114, and a take-up roller 115), and a drive device (a motor 16, an electromagnetic clutch 1) that drives these first and second take-up roller devices.
7 and a differential gear device 18), and a switching knife device (comprising a switching knife roller 12 and a switching knife receiving roller 13) for cutting the packaging members 2 and 102.

A switching feed roller 9 that constitutes a first winding roller device, a second winding roller device, and a switching knife device,
109, receiving roller 10, 110, collecting roller 1
1,111, switching knife roller 12, switching knife receiving roller 13, suction separation roller 14,1
The fourth grade is arranged along the Y-shaped passage L.

FIG. 3 shows the automatic switching device of the present invention in detail.

On the entrance side of the Y-shaped passage L (upper position in FIG. 3), there is a register mark detector 20 for detecting patterns attached to the packaging members 2, 102 at predetermined intervals.
120 and suction brakes 21, 121 are arranged respectively, and near the winding rollers 15, 115 are air cylinders 22, 122 for discharging the front end portions of the packaging members 2, 102 wound around the rollers 15, 115. are placed respectively.

As shown in FIG.
2a, 122a move along the circumferential surface of the winding roller 15, 115 (move in the axial direction of the winding roller 15, 115), and the packaging member is wound up from the circumferential surface of the winding roller 15, 115. Eject 2,102.

Further, winding confirmation detectors 23 and 123 are arranged between the suction separation roller 14 and the take-up roller 15, and between the suction separation roller 114 and the take-up roller 115, respectively. Further, a guide 25 is provided below the suction separation rollers 14, 114, and is moved up and down by a cylinder 24.
2 is allowed to run toward the take-up rollers 15 and 115.

The motor 16 constituting the above-mentioned drive device operates in the first winding roller device (switching feed roller 9, collecting roller 11, suction separation roller 14, winding roller 15) or the second winding roller device (switching The feed roller 109, collection roller 111, suction separation roller 114, and take-up roller 115) are rotated at low speed. Further, during the switching operation, the electromagnetic clutch 17 is connected to the first winding roller device (switching feed roller 9, gathering roller 11, suction separation roller 14, winding roller 1).
5) Alternatively, the rotation of the main motor 19 (see FIG. 2) of the packaging member supply device is transmitted to the second take-up roller device (switching feed roller 109, gathering roller 111, suction separation roller 114, take-up roller 115). Further, the differential gear device 18 uses a harmonic differential unit. This harmonic differential unit is a wave generator (consisting of an oval cam and a ball bearing fitted around its outer circumference).
flexspline (a thin, cup-shaped elastic metal body with involute-shaped teeth formed around the outer periphery of the opening) and circular spline (a rigid ring-shaped body with the same pitch as the flexspline on the inner periphery) The flexspline has two more teeth than the flexspline.

The differential gear device 18 is operated by a stepping motor 26 (see FIG. 2, this stepping motor 26 is a motor for adjusting the register mark detector 2).
0 and 120), the rotation speed of the switching feed roller 9 or 109 is increased or decreased without increasing or decreasing the rotation speed of the motor 19 for pattern matching during the switching operation.

In addition, the differential gear device 37 on the side of the packaging member supply device
Similarly, it is composed of a harmonic differential unit, and its adjustment motor is a stepping motor 38 (see FIG. 2, this stepping motor 38 is connected to a register mark detector 31).
The number of revolutions of the feed roller 3 is increased or decreased without increasing or decreasing the number of revolutions of the motor 19 for pattern matching during feeding.

The switching knife receiving roller 13 constituting the above-mentioned switching knife device has an eccentric rotating shaft, and the short diameter side normally faces the switching knife roller 12. An SR clutch 28 is connected to the switching knife receiving roller 13 as shown in FIG.

This SR clutch 28, as shown in FIG.
An outer ring 28a (on the drive side, connected to the drive system of the motor 16) and an inner ring 28b (on the load side, connected to the switching knife receiving roller 13) are interposed between the outer ring 28a and the inner ring 28b. It is composed of a roller 28c. The roller 28c is held within the trip cam cage 28d and is positioned at the solid line position (ON) in the figure by a coil spring 28e. The step portion 28f of the trip cam cage 28d is connected to the lever 27 (see FIGS. 2 and 4).
When pushed in the direction of the arrow in Fig. 4, the roller 2
8c is located at the two-dot chain line position (OFF) in the figure.

Normally, the lever 27 pushes the step part 28f.
The SR clutch 28 is in the OFF state (the roller 28c is in the double-dashed line position), and when the solenoid 29 (see FIG. 2) is operated and the lever 27 is released, it is in the ON state (the roller 28c is in the solid line position) and the motor 16 is turned on.
The rotation is transmitted to the switching knife receiving roller 13, and the switching knife receiving roller 13 rotates so that its longer diameter side faces the switching knife roller 12. As a result, the packaging member 2, 102 is moved to the switching knife roller 1.
2 is pressed and cut. When the solenoid 30 operates, the lever 27 is engaged with the step portion 28f, and the SR clutch 28 is in the OFF state at the normal position.

The switching knife roller 12 and the main knife roller 7 are constantly rotated by a motor 19.

In addition, in FIG. 1, reference numerals 32 and 132 are tip peeling devices, 33 and 133 are preliminary suction rollers, and 3
4, 134 is a tension roller, 35, 135 is a preliminary feed roller, and 36 is a motor.

Next, the operation of the above embodiment will be explained.

In the normal state, the rollers 9, 109, 10, 110, 11, 1111, etc. of the automatic switching device are all out of the way, and there are gaps between the rollers. For example, when the packaging member 2 is being unwound from the bobbin 1, the unwinding force is applied to the packaging member 2 by the feed roller 3 and the receiving roller 4 operated by the motor 19, and the preparatory suction roller 3
3. After passing through the tension roller 34 and the preliminary feed roller 35, the direction is changed by the direction changing feed roller 5, and then passing through an automatic switching device.

One-way clutches are incorporated in the redirection feed rollers 5, 105 and the collection rollers 11, 111 to reduce the unwinding resistance.

After passing through the automatic switching device, the register mark detector 31 detects whether or not there is a pattern shift.
When a pattern shift is detected by the register mark detector 31, the stepping motor 38 is operated by the signal from the register mark detector 31, and the differential gear is changed without increasing or decreasing the rotation speed of the motor 19. The device 37 increases or decreases the number of revolutions of the feed roller 3 to correct the pattern deviation.

After the pattern misalignment is corrected, the packaging member 2 is cut into a certain size and pattern by the main knife roller 7 and the knife receiving roller 8, and then by the gluing roller 50.
Glue is applied by the receiving roller 51 and sent to the packaging machine.

When the packaging member 2 is unwound from the bobbin 1 as described above and the winding diameter of the packaging member 2 becomes equal to or less than a predetermined value (it may be switched arbitrarily), preparations for switching to the other bobbin 101 are made. This preparation for switching is carried out according to the switching preparation routine shown in FIGS. 5a and 5b.

First, the tip peeling device 132 is pressed against the packaging member 102 of the bobbin 101. Next, motor 3
6 rotates the bobbin 101 at low speed. When the front end portion of the packaging member 102 is detected by a sensor (not shown) provided in the tip peeling device 132, the rotation of the bobbin 101 is stopped. Next, the bobbin brake (not shown) is turned on, and the tip scissors (not shown) of the tip peeling device 132 close to pinch the front end portion of the packaging member 2. Next, the tip peeling device 132 is pushed down while holding the front end portion of the packaging member 2, and is separated from the bobbin 101. Next, the preliminary suction roller 133 operates to suck the front end portion of the packaging member 102. Then, the tip scissors of the tip peeling device 132 are opened and the front end portion of the packaging member 102 is released. Next, the tension roller 134 is pushed down and the front end portion of the packaging member 102 is pressed against the preliminary suction roller 133 by a tip presser spring (not shown). Next, the bobbin brake is turned off, and the motor 36 rotates the bobbin 101 at a low speed.

In this way, from the bobbin 101 to the packaging member 10
2, the suction separation roller 114,
The suction of the take-up roller 115 is turned on, and then the relief of the receiving roller 106 is released, and then the motor 16 turns on the second take-up roller device (switching feed roller 109, gathering roller 111, suction separation roller 114, take-up roller 115). ) is driven at low speed. Release of the receiving roller 106 is performed by turning the solenoid 139 (see FIG. 2) from ON to OFF.

Next, the motor 36 is stopped, the tension roller 134 is pushed up, and the guide 25 is lowered by the cylinder 24. And the winding confirmation detector 12
3, it is detected that the winding roller 115 has taken up the front end portion of the packaging member 102, and the register
When a pattern is detected by mark detector 120, motor 16 is stopped. Then, the suction brake 121 is turned ON, the suction of the suction separation roller 114 is turned OFF, and the cylinder 2
4 causes the guide 25 to rise.

After the preparation for switching is completed in this manner, when the remaining amount of the packaging member 2 on the bobbin 1 becomes small, the switching operation is performed according to the switching routine shown in FIG.

First, the electromagnetic clutch 17 is engaged to transmit the rotation of the motor 19 of the packaging material supply device to the second take-up roller device, and the second take-up roller device is driven at a constant speed, that is, at a speed of 1:1 with the packaging material supply device. Driven by ratio. Next, when the pattern is detected by the register mark detector 120, the patterns of the packaging members 102 and 2 are matched.

This pattern matching is performed according to the pattern matching routine shown in FIG. First, the mechanical angle of the packaging material supply device is detected by the rotary encoder 40, and the angle reading port of a microcomputer (not shown) in the control section is latched when a register mark is detected. Next, the deviation of the pattern (register mark) is calculated from the latched angle, the number of pulses to correct the deviation is determined, and this number of pulses is output to the stepping motor 26 in a through-up-down method to Drive the ping motor 26. When the latched angle is between 1° and 179°, a lead pulse is output, and when the latched angle is between 180° and 359°, a delayed pulse is output. As a result, the differential gear device 18 operates to increase or decrease the rotation speed of the switching feed roller 109, and when the timings of the pulse signals of the register mark detectors 20 or 120 and 31 match, the pattern of the packaging member 102 changes to the pattern of the packaging member 2. matches.

When the pattern matching is complete, press the photo switch 41.
The position of the blade of the switching knife roller 12 is detected by the solenoid 29, and the SR clutch 28 is activated by the solenoid 29.
Turn it on. As a result, the switching knife receiving roller 13 rotates to press the packaging members 102, 2 against the switching knife roller 12, and the packaging members 102, 2
are cut at the same time. Next, the SR clutch 28 is turned off by the solenoid 30. Then,
When the cutting point approaches the main knife roller 7, the number of rotations of the main feed roller 3 is increased by the differential gear device 37 to advance the packaging member 2 and create a gap of about 0.8 mm between the rear end and the front end of the packaging member 102. so that the main knife roller 7 cuts the cutting area.

Next, when it is detected by the signal from the rotary encoder 40 that the machine rotation speed of the packaging member supply device has reached a predetermined number (for example, 3 rotations) after cutting,
Disengage the electromagnetic clutch 17 and open the air cylinder 42.
Turning from ON to OFF causes the receiving rollers 110 and 106 to escape, and the guide 25 is lowered by the cylinder 24. Next, the front end portion of the packaging member 102 wound up from the winding roller 115 is discharged by the air cylinder 122, and the suction brake 21 is activated.
Turn it off and rotate the bobbin 1 in the reverse direction at low speed to collect the remaining pieces of the packaging member 2.

The same procedure is performed when switching from the bobbin 101 to the bobbin 1 side. When pattern matching is not necessary, the pattern matching routine shown in FIG. 7 is omitted.

According to the embodiment described above, the main knife roller 7 and the switching knife roller 12 are constantly rotated by the motor 19, and the timing is always the same. Therefore, during the switching operation, the switching knife roller 12 is rotated at the same timing as the main knife roller 7. Packaging members 2, 10
2 cuts can be made.

Further, during the switching operation, the packaging member 102 runs at the same speed as the packaging member 2 and is in a tensioned state, so there is no risk of errors (displacements) caused by the packaging member 102 sagging.

Further, since the switching knife receiving roller 13 is an eccentric roller and is rotated by the SR clutch 28, the short diameter side of the switching knife receiving roller 13 is opposed to the switching knife roller 12 so that it can be stopped reliably. Can be done. In addition, since half of the switching knife receiving roller 13 is the long diameter portion,
Cutting can be carried out while the switching knife receiving roller 13 rotates 180 degrees, which allows more time to adjust the switching timing.

In addition, the cutting location with the switching knife roller 12 is as follows:
Since a gap of about 0.8 mm is created by the feed roller 3, there is no possibility that short pieces will be generated due to the double cutting by the main knife roller 7.

Also, when preparing for switching, lower the guide 25,
Guide 25 and suction separation rollers 114, 14
Since a large gap is created between the packaging members 102 and 2, it becomes easy to unwind the packaging members 102 and 2 in the direction of the winding rollers 115 and 15. Also, during switching operation, guide 2
5 is raised to make the gap as small as possible,
The front end of the packaging member 102, 2 cut by the switching knife roller 12 is transferred to the suction separation roller 11.
There is no risk of getting caught in 4 or 14.

8 and 9 show a second embodiment of the invention. In this second embodiment, the switching preparation operation is not performed automatically as in the above-mentioned embodiments, but is performed manually. Components in the figure that are the same as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In this embodiment, guide rollers 43, 143 are provided in place of suction separation rollers 14, 114 in order to perform the switching preparation operation manually.

In addition, the switching knife device (switching knife roller 1
2,112, switching knife receiving roller 13,11
3) are prepared so that the switching knife receiving rollers 13 and 113 are simultaneously rotated by the SR clutch 28 during the switching operation.

The drive device is also equipped with an electromagnetic single position clutch 44 in addition to the electromagnetic clutch 17. When the electromagnetic clutch 17 is engaged, the motor 19
The rotation of the first winding roller device (switching feed roller 9, guide roller 43, winding roller 15) or the second winding roller device (switching feed roller 1)
09, guide roller 143, take-up roller 115)
and starts rotating at a speed ratio of 1:0.957 with the packaging member supply device. At this time, the electromagnetic single position clutch 44 is energized. As shown in FIG. 10, this electromagnetic single position clutch 44 has a magnetic body portion 44a (incorporating a coil 44d) having teeth 44c on the side surface.
and an armature portion 44b having teeth 44e that mesh with the teeth 44c, and when the coil 44d is excited, the release plunger 4
When the armature portion 44b is attracted to the magnetic body portion 44a against the force of the coil spring 4f and the coil spring 44g and the mechanical rotational speed of the packaging member supply device reaches 24 rotations at most, the teeth 44c and 44e engage and the clutch is closed. enter.

When this clutch is engaged, the speed ratio mentioned above is 1:
Changes from 0.957 to 1:1. To do this,
The first take-up roller device or the second take-up roller device is in a stopped state.
Since the take-up roller device cannot immediately synchronize with the packaging material supply device and operate at a speed ratio of 1:1, resulting in some delay, an electromagnetic single position clutch 44 is used to perfectly synchronize the timing. An electromagnetic clutch 17 is used for its auxiliary rotation.

Furthermore, slits (not shown) are formed in the flanges 45, 145 (see FIG. 8) of the switching feed rollers 9, 109 for pattern matching. The winding rollers 15, 1 are aligned with the pattern on this slit.
When the packaging member 2, 102 is wound up on the tape 5, the cutting location on the switching knife rollers 12, 112 coincides with the cutting location on the main knife roller 7.

Next, the operation of the above embodiment will be explained.

In a normal state, for example, when the packaging member 2 is being unwound from the bobbin 1, the packaging member 2
The feeding force is applied by the feed roller 3 and the receiving roller 4, and the first
It passes through a take-up roller device and reaches a register mark detector 31, where the presence or absence of pattern shift is detected by the register mark detector 31. If a pattern shift is detected, the differential gear device 37 increases or decreases the rotation speed of the feed roller 3 to correct the pattern shift. Thereafter, the packaging member 2 is cut into a certain size and pattern by the main knife roller 7 and knife receiving roller 8, coated with glue by the glue roller 50 and receiving roller 51, and sent to a packaging machine.

When the winding diameter of the packaging member 2 becomes less than a predetermined value (it may be arbitrarily switched before reaching the predetermined value),
Manually pull out the front end portion of the packaging member 102 of the bobbin 101 and move it between the guide rollers 146 and
Pass it through a tension roller 147 and a guide roller 149. Then, the winding roller 11 is passed between the switching feed roller 109 and the receiving roller 110, between the switching knife roller 112 and the switching knife receiving roller 113, and between the guide rollers 43 and 143.
5 (set it on the second take-up roller device). At this time, the tip of the pattern on the packaging member 102 is aligned with the slit in the flange 145.

Although the above-mentioned switching preparation operation is performed manually, the next switching operation is performed automatically as in the previous embodiment. That is, when the amount of packaging material 2 remaining decreases, the electromagnetic clutch 17 is engaged, and the second take-up roller device begins to rotate at a speed ratio of 1:0.957 to the packaging material supply device. When the electromagnetic single position clutch 44 is engaged, the speed ratio becomes 1:1.
Next, the photo switch 41 detects whether the switching knife rollers 12, 112 are at a position where switching is possible. Then, the SR clutch 28 is actuated and the switching knife receiving rollers 13 and 113 rotate simultaneously to press the packaging members 2 and 102 against the switching knife rollers 12 and 112, thereby cutting the packaging members 2 and 102 simultaneously.

After this, the bobbin 1 is stopped by the bobbin brake. In addition, the switching knife roller 12 of the packaging member 2
When the cut point (the rear end of the packaging member 2) approaches the main knife roller 7, the differential gear device 37
As a result, the number of revolutions of the main feed roller 3 is increased to advance the packaging member 2 to create a gap of about 0.8 mm between the rear end and the front end of the packaging member 102.

After cutting with the switching knife rollers 12 and 112, when the mechanical rotation speed of the packaging member supply device reaches 4 rotations,
Disengage the electromagnetic single position clutch 44.

The same procedure is performed when switching from the bobbin 101 to the bobbin 1 side.

〔Effect of the invention〕

As explained above, according to the present invention, the winding roller device (the first winding roller device, the second winding roller device) winds the packaging member of the other bobbin and rotates the other bobbin during the switching operation. and a switching knife device that simultaneously cuts the packaging member of the other bobbin that is being run by the take-up roller device and the packaging member of the one bobbin that is being fed out, and one of the packaging members that is cut by the switching knife device. Since the structure is such that the cut end of the packaging member of one bobbin is successively fed out at the same speed as the cut end of the packaging member of the other bobbin, there is no risk of timing deviation when switching.

In addition, a winding roller device (a first winding roller device, a second winding roller device) that winds the packaging member of the other bobbin and rotates the other bobbin during the switching operation, and a winding roller device that winds the packaging member of the other bobbin and rotates the other bobbin, and A mark detector (register mark detector 20) that detects the pattern attached, a mark detector (register mark detector 120) that detects the pattern attached to the packaging member of the other bobbin, and a mark detector (register mark detector 120) that detects the pattern attached to the packaging member of the other bobbin. When the device detects that the pattern of the packaging member of one bobbin matches that of the packaging member of the other bobbin, the winding roller device detects that the packaging member of the other bobbin is running and the packaging member of the one bobbin that is being fed out. and a switching knife device for simultaneously cutting the packaging member of one bobbin, so that the cut end of the packaging member of one bobbin cut by the switching knife device is followed by the cut end of the packaging member of the other bobbin. Therefore, even when applied to a packaging member supply device that cuts patterned packaging members into predetermined dimensions while matching the patterns, there is no fear that the pattern will shift during switching.

In addition, the cut edges of both packaging members cut at the same time by the switching knife are separated by a gap before reaching the main knife roller, and the main knife roller passes through the gap, so the edges are cut twice by the main knife roller. There is no risk of short pieces occurring.

[Brief explanation of drawings]

1 to 7 show a first embodiment of the present invention,
Fig. 1 is a schematic diagram of the entire packaging member supplying device equipped with the automatic switching device for packaging members of the present invention, Fig. 2 is a power transmission path diagram of the device, and Fig. 3 is a front view showing details of the automatic switching device. , FIG. 4 is a partial sectional view showing the SR clutch, FIGS. 5 a and b are flow charts showing the switching preparation routine, FIG. 6 is a flow chart showing the switching operation routine, and FIG. 7 is a flow chart showing the pattern matching routine. 8 and 9 show a second embodiment of the present invention, FIG. 8 is a schematic diagram similar to FIG. 1, and FIG. 9 is a power transmission path diagram of the device shown in FIG. FIG. 10 is a sectional view showing an electromagnetic single position clutch. [1,101... Bobbin, 2,102... Packaging member, 3... Feed roller, 4... Receiving roller, 7... Main knife roller, 8... Receiving roller,
9... switching feed roller, 10... receiving roller, 11... gathering roller, 14... suction separation roller, 15... winding roller, 43... guide roller] first winding roller device, [109... switching Feed roller, 110... Receive roller, 111
... Collection roller, 114 ... Suction separation roller, 115 ... Take-up roller, 143 ... Guide roller] Second take-up roller device, [12, 112 ...
switching knife roller, 13, 113... switching knife receiving roller] switching knife device, [19... motor,
17... Electromagnetic clutch, 44... Electromagnetic single position clutch] Drive device, [18... Differential gear device, 37... Differential gear device, 26... Stepping motor, 38... Stepping motor] Increase/Decrease speed mechanism.

Claims (1)

[Scope of Claims] 1. In an automatic switching device for a packaging member that switches from one bobbin of a patterned packaging member wound around two bobbins to the other bobbin while the packaging member is being unwound from the bobbin. A register mark detector 120 detects the pattern of the other packaging member, a switching feed roller feeds the other packaging member in an adjustable manner, and is disposed downstream of a collecting roller that collects both packaging members. a switching knife roller capable of cutting both packaging members at the same time; a winding roller disposed downstream of the switching knife roller and winding up the other packaging member during the switching operation; and a winding roller disposed downstream of the switching knife roller and winding the other packaging member. a register mark detector 31 for detecting a pattern on a packaging member;
A feed roller feeds one of the packaging members toward the downstream main knife roller in an adjustable manner, and the feed roller is accelerated or decelerated in response to a detection signal from the register mark detector 31 to feed the packaging member toward the main knife roller. a control unit that increases or decelerates the switching feed roller in synchronization with the roller, and synchronizes the other packaging member fed to the switching knife roller with the one packaging member by increasing or decelerating the switching feed roller according to the detection signal of the register mark detector 120; Automatic switching device for packaging materials. 2. In an automatic packaging member switching device that switches from one bobbin of a patterned packaging member wound around two bobbins to the other bobbin while the packaging member is being unwound from one bobbin, A register mark detector 120 that detects a pattern, a switching feed roller that feeds the other packaging member in a manner that can increase or decrease speed, and a collecting roller that collects both packaging members and cuts both packaging members at the same time. a take-up roller that is arranged downstream of the switching knife roller and winds up the other packaging member during the switching operation; and a take-up roller that is arranged downstream of the switching knife roller that detects the pattern of one of the packaging members. a register mark detector 31 for
A feed roller feeds one packaging member toward the downstream main knife roller in a manner that can increase or decrease the speed, and the feed roller is increased or decreased in response to a detection signal from the register mark detector 31 to synchronize the packaging members. control to speed up and decelerate the feed roller so that the switching knife roller feeds the feed roller to the main knife roller, and when the switching knife roller cuts both packaging members, the main roller feeds the cutting parts with a gap between the cutting parts of both the packaging members. An automatic packaging member switching device comprising: