JPS6121900B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to relatively thin or flexible paper such as toilet paper, towel paper, etc. This invention relates to a paper winding device in which cutting perforations are made at intervals.

As a device for winding up a fixed amount of base paper from a base paper roll wound with a large amount of base paper onto cores for different destinations, a core rod that is longer than the core is inserted into the core, and both ends of the core are wound. supported by a suitable means, and a fixed amount of base paper is wound around this core, or the core is supported rotatably by a rotating support without using a core, There are several known devices in which base paper is wound around a rotating core, but this invention allows the core to be rotatably supported by a rotating support without using a core rod. In addition, during winding, as the core becomes thicker, the core is gradually moved in the winding space, so that the winding action is performed particularly smoothly. To provide a paper winding device capable of smoothly cutting a thick log by utilizing the cutting perforations made in the paper before winding it onto a core. It is.

Another object of the present invention is to provide a paper winding device that automatically and extremely smoothly winds the cut end of the log wound around the core on the side where the paper begins to wind around the core. The main point of this product is that the winding drum is horizontally supported and supported at a suitable position on the machine frame, and the winding drum is supported by a bearing frame that is movably supported on the machine frame. A winding roll configured to be able to increase or decrease the distance between the winding drum and the bearing frame configured to be freely displaceable with respect to the machine frame, so that the gap between the winding drum and the winding roll is The presser roll is configured to be able to move up and down from above and downward, and is supported by another bearing frame that is configured to be freely displaceable with respect to the machine frame, and is positioned below the gap between the winding drum and the winding roll. The winding drum and the winding roll are connected to a drive source that rotates the winding drum and the winding roll at the same circumferential speed, and the winding drum and the winding roll are connected to a drive source that rotates the winding drum and the winding roll at the same circumferential speed. Displacement operating mechanisms are connected to the bearing frame of the roll, the bearing frame of the presser roll, and the bearing frame of the receiving roll, respectively, a core supply device is disposed above the winding space, and a core supply device is disposed below the winding space. A temporary holding device for the log discharged from the winding space is installed in the direction, and an air blowing device is installed above the winding space to wind the paper following the log onto the next core. A paper winding device having cutting perforations formed at regular intervals in the length direction.

To explain the embodiment with reference to the drawings, in Figs. 1 to 4, 1 is rotatably supported on its rotating shaft 3 by a machine frame 2, the outer peripheral surface is knurled, and annular grooves 1a are formed at appropriate intervals. The formed winding drum 4 is a plurality of winding rolls disposed in front of the winding drum 1, and an appropriate interval is provided between each winding roll 4, respectively. This winding roll 4 is fitted onto one shaft 5.
The shaft 5 is mounted below the winding drum 1 on a bearing frame 7 consisting of a pair of rotating arms, which is pivoted 6 to the machine frame 2, and above the pivot point 6 on a horizontal bearing frame 7. 8
has been done.

In this way, the distance between the winding drum 1 and the winding roll 4 can be increased or decreased, but the bearing frame 7 of the winding roll 4 has
A bearing frame 7 of the winding roll 4 is connected to a displacement operating mechanism as shown schematically in FIG.
is made to oscillate intermittently.

That is, the bearing frame 7 is connected to a ring 12 fitted onto the eccentric wheel 11 via a connecting rod 10, and a clutch (not shown) is inserted into the shaft 13, and the eccentric wheel 11 is driven one rotation. Then, from the starting position shown in FIG. 1, the bearing frame is oscillated once in a direction to widen the distance between the bearing frame and the winding drum 1, and then returned to the starting position again. 7 swings, the interval between the winding drum 1 and the winding roll 4 is a constant interval smaller than the core 14, and the log is slightly thickened between the winding drum 1 and the winding roll 4. The distance can be intermittently increased or decreased over a period of time that allows the passage of paper (paper slightly wound around the core 14).

As described above, the shaft 3 of the winding drum 1 and the shaft 5 of the winding roll 4, which are arranged parallel to each other, are connected to each other by passing the fulcrum 6 position of the bearing frame 7 (not shown). The winding drum 1 and the winding roll 4 are interlocked and connected to the same drive source through an interlocking system, so that the winding drum 1 and the winding roll 4 are driven in the directions of the arrows at the same circumferential speed. ing.

Above the gap between the winding drum and the winding roll 4, a presser roll 15 is disposed, as described below, which can freely advance and retreat downward from above. That is, 16 is a bearing frame that is pivotally supported on the bearing frame 7 with the shaft 5 of the winding roll 4 bearing on the bearing frame 7 as a fulcrum, and the presser roll 15 is attached to the bearing body 16. Bearing at free end. Further, as shown in FIG. 3, a sprocket wheel 17 centered around the support shaft 5 is fixed to the bearing frame 16, and a sprocket wheel 17 is operated to displace the bearing frame 16 toward the sprocket wheel 17. The operating mechanism of this embodiment includes a sprocket wheel 18 rotatably fitted loosely to the support shaft 6 of the bearing frame 7, and both wheels 17, 1.
The chain 20 that is passed around between 8 and 8, the arm rod 21 fixed to the sprocket wheel 18,
1, and a grooved cam 24 for slidingly displacing the sliding body 23 from side to side in FIG. When the grooved cam 24 fitted on the shaft 13 of 11 rotates once intermittently, the sliding body 23 is displaced, and the presser roll 15 is then moved from the starting position shown in FIG. At a predetermined speed, it is once caused to be displaced downward, then upwardly displaced to the top point, and then lowered again to return to the starting position, so that it can be waited for at the starting position. It's summery.

Furthermore, below the gap between the winding drum 1 and the winding roll 4, a receiving roll 25 is disposed which can be raised and lowered upward from below. That is, reference numeral 26 denotes a bearing frame having a U-shaped side surface and whose base end is pivoted 27 at an appropriate position on the machine frame 2 at the rear of the winding drum 1. The bearing roll 25 is supported by a bearing at its free end and is configured to be able to move up and down from below toward the spaced portion.
A balance weight 28 is attached to the bearing frame 26, and the balance weight 28 is always biased upward, and an air cylinder 30 is connected to the bearing frame 26, so that the above bias is applied. The downward movement of the retracted receiving roll 25 can also be performed by the air cylinder 30.

The winding drum 1 and winding roll 4 explained above
A winding space A is formed by the space surrounded by the presser roll 15 and the receiving roll 25, and this winding space A is
The upper winding space A ₁ is located above the boundary line connecting the axis of the winding drum 1 and the axis of the winding roll 4.
Then, below the boundary line, the lower winding space A ₂
These winding spaces A ₁ and A ₂
The shape of is variable since the take-up roll 4, presser roll 15, and receiving roll 25 are movable.

The cores 14 for winding the paper are intermittently controlled one by one from the core supply device 31 disposed above the winding space A to the upper winding space _A1 . However, the core supplying device 31 of the embodiment has the bottom plate 32a of the hopper 32 pivoted on one side so that it can swing freely, and A hopper 32 has a bottom plate 32a connected to an eccentric roll 35 via an eccentric bearing 34.
and a supply gutter 36 connected to the bottom of the hopper 32.
, two stoppers 37 and 38 arranged in the middle of the supply gutter 36, and these two stoppers 37 and 3
8 to and from the core 14 alternately.
When the two stoppers 37 and 38 are operated alternately to pull out the core 14 that has been guided inward,
One piece is supplied falling into the upper winding space _A1 , and stoppers 37 and 38
The engagement and disengagement operation with respect to the core 14 is performed by the shaft 13.
This is performed automatically and periodically in synchronization with one rotation of the front track presser roll 15.
is the same shaft 1 at the time when the core 14 is supplied from the supply gutter 36 to the upper winding space _A1 .
3, and is in a position where it is displaced upward in conjunction with the amount of rotation of step 3, and is in a state where the core 14 can be supplied to the winding space _A1 .

The apparatus of the present invention includes a device for winding paper around a core 14 supplied to an upper winding space _A1 surrounded by a winding drum 1, a winding roll 4, and a presser roll 15. The air blowing device
This air blowing device has its base end 40a fixed to the machine frame 2, and is installed in the annular groove 1a formed in the winding drum 1. The first air nozzle 40 consists of a second air nozzle 41 whose base end 41a is fixed to a proper position on the bearing frame 7 and is disposed in the interval between each winding roll 4. The second air nozzle 40 is directed toward the region where the core 14 is in contact with the take-up roll 4, and the second air nozzle 41 is directed toward the region where the take-up roll 4 is in contact with the core 14.

In addition, in the winding device of this embodiment, the log 43 wound thickly in the lower winding space A ₂ is moved to the receiving roll 25.
A device for discharging the logs 4 from above into the winding space A ₂ also includes an air cylinder 30 connected to the bearing frame 26 of the receiving roll 25 .
When the log 43 is thickened in the lower winding space _A2 , if the receiving roll 25 is suddenly moved downward, the thickened log 43 is supported by the receiving roll 25 on the left side of its center of gravity. Then, due to the rotation (inertia) of the receiving roll 25, it is ejected to the right.

A temporary log holding device for stopping the rotation of the log 43 released from above the receiving roll 25 and temporarily holding it in a stationary state is provided in the lower winding space A. However, in _this embodiment, the temporary log holding device is supported by the machine frame 7 and placed at a suitable location in the front lower part of the lower winding space _A2 . The disposed receiving plate 44 and the bearing frame 7 of the winding roll 4
With a plurality of presser plates 46 protruding from a shaft 45 bearing at a suitable position above, the presser plate 16 is configured to be able to freely protrude and retract downward from between each winding roll 4 (solid line position in Figure 1). There is. An air cylinder 42 for operating the free end side of the presser plate 46 is connected to the presser plate 46.

In the figure, 47 is a conveyor for discharging logs that have been rolled up by the winding device of the present invention and the paper has been cut off, and 48 is a receiving roll disposed at a constant interval in front of the conveyor. It is. Also, 50
1 is a perforation device attached to the winding device of the present invention, and the device 50 includes a cutter roll 52 and a cutter roll 52, on which a cutter 51 for making perforations is planted on the cylindrical surface thereof, and fixed to the machine frame 2. Mounting body 5
When the paper 56 unwound from the base paper roll 55 comes into contact with the cutter roll 52 and is sent to the winding device, the cutter 51 is fixedly attached to the cutter roll 52. A perforation can be made at the position where the blade 54 hits. 57 is a guide roll.

Next, the operation will be explained. Since the perforated paper winding device according to the present invention has the above-mentioned configuration, the device of the above embodiment has the following functions:
The winding drum 1 and the winding roll 4 are driven to rotate at the same circumferential speed in the direction of the arrow, and the shaft 13 on which the eccentric wheel 11 and the grooved cam 24 are fitted is started at a fixed timing. , when the winding drum 1 and the winding roll 4 constituting the winding space A are rotated intermittently, the distance between the winding drum 1 and the winding roll 4 increases and decreases intermittently at a substantially constant period. Since the presser roll 15 moves up and down intermittently at the same period, the eccentricity of the eccentric wheel 11, the cam shape of the grooved cam 24, and the phase relationship between the two should be appropriately set, and the above-mentioned At certain times synchronized with the cycle, the air cylinder 30 connected to the bearing frame 26 of the receiving roll 25, the air cylinder 42 connected to the presser plate 46, and the first
Air nozzle 40 and second air nozzle 41
, and if the core supply device 31 and the stoppers 37 and 38 are operated, one core 14 is supplied to the winding space A in each cycle, and the corresponding core 14 is supplied to the winding space A in the following manner. Core 14 to paper 5
6 is wound up.

That is, as described above, when the stopper 38 is opened when the presser roll 15 is positioned at the uppermost point and the distance between the winding drum 1 and the winding roll 4 is the narrowest, the cores will fall from the supply device 31. The core 14 is rotated in the direction of the arrow in contact with both the winding drum 1 and the winding roll 4.

In this state, when the presser roll 15 is lowered, the core 14 is moved onto the winding drum ₁ by the presser roll 15 in this upper winding space A1.
The winding roll 4 is brought into pressure contact with the partner of the take-up roll 4, and rotated reliably (FIG. 5).

Starting from the above state, the paper 56 that has passed through the perforation device 50 and the guide roll 57 is brought into contact with the winding drum 1 and is moved between the winding drum 1 and the core 14. sending,
First air nozzle 40 and second air nozzle 4
1, the leading end of the paper 56 unwound from the base paper roll 55 is first blown onto the portion of the core 14 that is in rolling contact with the take-up roll 1 by the action of the first air nozzle 40. It wraps around the core 14, passes between the two contact points, is sent out above, and then the core 1
The paper 56 is blown onto the area where the paper 56 is in rolling contact with the presser roll 15 by the action of the second air nozzle 41, and is further wound around the core 14, thus ensuring that the tip of the paper 56 is wound around the core 14. become.

In this way, the core 14 with the paper 56 wound thereon is connected to the winding drum 1, the winding roll 4, and the presser roll 1 in the upper winding space _A1.
5, it is in contact with the three parts and is held between them, and the winding is sure to become thicker, but if the clutch is engaged and the shaft 13 is rotated once at the above-mentioned starting point, the present invention The device is core 1
As the paper 56 becomes thicker, the distance between the winding drum 1 and the winding roll 4 is gradually increased, and the presser roll 15 is gradually lowered, so that the paper 56 is rolled onto the core 14. When the distance between the winding drum 1 and the winding roll 4 becomes larger than the diameter of the wound log 43, the log 43 is moved from the upper winding space _A1 to the lower winding space _A2. Then, it is moved and brought into rolling contact with the receiving roll 25. Thereafter, the log 43 is continuously kept in pressure contact with both the winding drum 1 and the winding roll 4 from below (FIG. 6).

In this way, the log 43 is placed in the lower winding space.
A ₂ will definitely make the roll thicker, but in the meantime,
The winding roll 4 is brought close to the winding drum 1 and returned to the starting point where the distance between them is smaller than the diameter of the core 14. At the time,
The next core 14 is fed into the upper part between the winding drum 1 and the winding roll 4, the presser roll 15 is lowered again and returns to the starting position, and the core 14 is placed in the upper winding space. , it becomes in a state where it is forced to rotate as described above.

As shown above, the log 4 on the receiving roll 25
3 winds up a predetermined length of paper (FIG. 7), this is detected by a detection means (not shown) and the air cylinder 30 is activated. When the air cylinder 30 is activated, Receiving roll 2
5 is lowered and the receiving roll 25 is lowered, the log 43 released from the rolling contact state between the winding drum 1 and the winding roll 4 is moved to the receiving roll 2.
5, that is, forward, and the receiving plate 4
However, if the air cylinder 42 is activated almost at the same time as the air cylinder 30, the log 43 will fall onto the receiving plate 44 and at the same time, the log 43 will fall onto the holding plate 46. It is pressed down and held between the receiving plate 44 (FIG. 8).

In the above state, the thickly rolled log 43 becomes
The log 43 is stopped from rotating and held stationary by a temporary holding device consisting of a receiving plate 44 and a holding plate 46. In this way, while the log 43 is held stationary, Also, base paper roll 5
Since the paper 56 fed out from 5 continues to be fed into the winding space A below the core 14,
At this time, the first and second air nozzles 40, 4
1, the upper end of the paper portion 56a that is loose in the winding space A is moved into the upper winding space _A1 by the action of the air blown out from the air nozzles 40 and 41 in the same manner as described above. It will be wound around the core 14 during the period. In this way, when the paper is wound around the core 14 waiting in the upper winding space _A1 , the portion 56a of the paper that has been hanging loosely below the core 14 is put under tension. It will be cut at the part where it is opened. That is, the thickened log 43 is separated from the roll base paper 55 at this time, and winding of the paper 56 following the roll base paper 55 onto a new core 14 is started.
The clutch is engaged with the one-rotation shaft 13 at this point.

Note that the paper separation position by the above-mentioned mechanism is determined by detecting the position of the perforation, setting the operating point of the cylinder 30, and intermittently causing the shaft 13 to make one rotation from that point in time. With these settings, the winding device of the present invention can always wind up a predetermined length of paper.

If the presser plate 46 is raised in synchronization with the shaft 13 after the paper has been cut as described above, the log 43 will roll on the conveyor 47 and its tip and It is once received between the front receiving rolls 48.

Therefore, while the log 43 is received at the above-mentioned position, an arbitrary gluing device (not shown) is used to glue the paper rewound while the log 43 is rolling to the position. If so, this log 4
3, while rotating in the direction of the arrow to the above position,
It is made by winding and pasting paper scraps into a log.

Although one embodiment of the paper winding device of the present invention has been described above, the present invention is not limited to the embodiment described above. Although the roll 15 and the receiving roll 25 have been shown as being freely rotatable, in other embodiments, these rolls 15 and 25 may be connected to a drive source and their peripheral surfaces may be wound. The take-up drum 1 and the take-up roll 4 may be driven at the same circumferential speed, and the displacement actuating mechanisms such as the take-up roll bearing frame 7 and the presser roll bearing frame 16 may be driven in other embodiments, for example. These can also be modified and implemented as follows. That is, as shown in FIG. 9, the displacement actuation mechanism for the bearing frame 7 of the winding roll 4 connects a spring 60 and an air cylinder 61 to the bearing frame 7, and the spring 60 causes the winding to take place. The bearing frame 7 is biased in a direction to narrow the gap between the drum 1 and the spring 60, and this biasing force can be reduced or reduced by the air pressure connected to the air cylinder 61. , the distance is the core 14
The presser roll 1 may be simply provided with stoppers 62 for locking at fixed intervals smaller than the outer diameter of the presser roll 1.
As shown in FIG. 9, the displacement operating mechanism for the bearing frame 16 of No. 5 connects an air cylinder 63 to the machine frame 2, and also connects a stopper 65 formed by the piston rod end of another air cylinder 64. When the air cylinder 63 is fully compressed,
When the presser roll 15 is maintained in the upwardly displaced position and the air cylinder 63 is extended to the intermediate position, the bearing frame 16 comes into contact with the stopper 65 with the air cylinder 64 fully extended, and the presser roll 15 is extended. , in contact with the core 14 located in the upper winding space A ₁ , and when the air cylinder 64 is gradually contracted and the air cylinder 63 is similarly gradually further expanded, the core 14 located in the upper winding space A ₁ is
is pressed by the presser roll 15, and the winding drum 1
The space between the winding roll 4 and the winding roll 4 may be expanded, and the winding roll ₄ may be pushed down into the lower winding space A2.

As will be understood from the above explanation, according to the winding device of the present invention, the winding space is is formed, and the winding space is divided into upper and lower winding spaces with a line connecting the axes of the winding drum and the winding roll as the border, and in the winding device of the present invention, The core is intermittently supplied to the upper winding space, and while moving from the upper winding space to the lower winding space, the paper is continuously unwound using these two locations without stopping. Each of the above-mentioned winding spaces has three rolls other than the winding drum that make up the space.
Both are configured to be displaceable, and the winding space is configured to the size of the space, and
In each of the upper and lower winding spaces, the core or log must be covered with three of the four rolls or drums.
Since the cores are in rolling contact and are held at three points, winding is performed and the core is moved, the winding is extremely smooth and reliable. It will be done.

Further, in the winding device of the present invention, the winding is carried out in the lower winding space on a movable receiving roll, and the log that has been rolled and thickened in the space can collect a predetermined amount of paper. When the log is wound, the receiving roll is lowered to release the log from the winding space, and the released log is immediately caught by a temporary holding device to stop the winding.
When the rotation of the log is stopped, the paper following the log is tensed and cut using the presence of perforations located in the winding space, so the amount of winding can be adjusted. It is possible to accurately wind up a predetermined length of paper without causing large variations.

In addition, the cutting is performed by utilizing the winding action of the paper at the beginning of winding onto the next core and the existence of perforations, so that the winding of the paper around the next core is performed by the winding drum. This is done under three-point clamping between the take-up roll and the presser roll, so this can be done very easily and reliably, and there is no interruption in the winding work. can be performed completely continuously.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of a paper winding device according to the present invention, FIG. 2 is a partially cutaway plan view of a winding drum and a receiving roll, and FIG. 3 is a partially cutaway side view of a winding drum and a receiving roll. 4 is a side view showing the displacement operation mechanism of the presser roll, and FIGS. 5 to 8 are action explanatory diagrams diagrammatically showing the main mechanisms. FIG. 9 is a partially cutaway side view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Winding drum, 2... Machine frame, 3... Shaft, 4... Winding roll, 5... Shaft, 7... Bearing frame, 12... Displacement actuation mechanism (ring), 15... Presser roll, 16... Bearing frame, 24 ...Displacement actuation mechanism (eccentric wheel), 25...Bearing roll, 26...Bearing frame, 31...Core supply device, 40, 41...Air blowing device (air nozzle), 23...Log, 44...Holding device (receiver plate) ), 4
6... Holding device (pressing plate), A/A ₁ /A ₂ ... Winding space.

Claims (1)

[Scope of Claims] 1. A winding drum supported horizontally at a suitable position on a machine frame and a bearing frame movably supported on the machine frame to increase or decrease the distance between the winding drum and the winding drum. It is supported by a freely configured take-up roll and a bearing frame that is configured to be freely displaceable with respect to the machine frame.
The winding is supported by a presser roll that is configured to be able to rise and fall freely downward from above the gap between the winding drum and the winding roll, and another bearing frame that is configured to be freely displaceable with respect to the machine frame. The take-up drum and a receiving roll configured to be able to move up and down from below the gap between the take-up rolls constitute a take-up space, and the take-up drum and the take-up roll are moved at the same circumferential speed. connected to a drive source that rotates the take-up roll, and connected to a bearing frame of the winding roll, a bearing frame of the presser roll, and a bearing frame of the receiving roll, respectively, and a displacement actuation mechanism thereof, in an upper direction of the winding space;
A core feeding device is provided, a temporary holding device for the log discharged from the winding space is provided below the winding space, and a paper following the log is placed in the upper part of the winding space. A paper winding device having perforations for cutting at regular intervals in the length direction, characterized by being equipped with an air blowing device for winding the paper onto the next core. 2. The device according to claim 1, wherein the bearing frame of the winding roll is a frame pivotally supported on a machine frame in a lower front direction of the winding drum. 3. According to claim 1 or 2, the winding roll is a plurality of winding rolls fitted onto a single shaft with appropriate intervals between each roll. equipment. 4. Claim 1, wherein the bearing frame of the presser roll is a frame that is swingably supported on the bearing frame of the take-up roll with the axis of the take-up roll as a fulcrum.
The device according to any one of Items 1 to 3. 5. The device according to any one of claims 1 to 4, wherein the bearing frame of the receiving roll is a swinging frame pivotally supported at a proper position on a machine frame. 6. A temporary holding device for the logs that are thickened and released from the winding space is pivotally supported by a receiving plate supported on the machine frame and a bearing frame of the winding roll,
Claim 3: A log holding device comprising a presser plate whose free end side is configured to be able to protrude and retract downward from the space between each winding roll, and a displacement actuation mechanism for the presser plate. The device described in. 7. The air blowing device has its proximal end fixed to the machine frame and blows the paper to the region where the core is in contact with the winding roll, which is disposed in an annular groove formed in the winding drum. An air nozzle for attaching,
Fix the base end to the bearing frame of the take-up roll,
Claim 3 or 6, which is a combination with an air nozzle disposed in a space between each take-up roll for blowing the paper to the area where the core is in contact with the presser roll. Device.