JP2002137871A - Scraper unit for removing residual thread of paper tube and apparatus for removing residual thread of paper tube using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly remove residual threads on a paper tube PT having a given outside diameter. SOLUTION: A scraper unit 40 includes scrapers 43, 43 and so forth radially disposed on the front surface of a circular guide member 41, and a driving member 44 for driving the scrapers 43, 43 and so forth in the radial direction of the guide member 41. The scraper unit is combined with a holder 20 and a cutter 31. The cutter 31 cuts the residual threads of the paper tube PT on the holder 20 and the scraper unit 40 adjusts the opening diameter of each of the scrapers 43, 43 and so forth via the driving member 44 to match the outside diameter of the paper tube PT. The residual threads on the paper tube PT can thus be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraper unit for removing a residual yarn of a paper tube which can smoothly remove the residual yarn from a paper tube having an arbitrary outer diameter, and a paper tube residue using the same. The present invention relates to a yarn removing device.

[0002]

2. Description of the Related Art In the field of the textile industry, in order to smoothly remove residual yarn from a paper core, a residual yarn removing device for removing a residual yarn by, for example, advancing a circular scraper in an axial direction of the paper core has been proposed. (For example, Japanese Patent Application Laid-Open No. 9-208129)
No.).

[0003] This device is constructed by sequentially disposing a cutter, a scooping claw, a sub-cutter for finishing, a rake-claw, a hot-air injection nozzle, and a circular scraper in the axial direction of a paper tube. I have. The opening diameter of the scraper is set to be equal to the outer diameter of the paper tube. Therefore, when the paper tube is fed in the axial direction, the surface layer of the remaining yarn on the paper tube is cut through the cutter, and then the deep portion of the remaining yarn scooped up through the scooping claw is removed. Cut with a sub-cutter, expand the cut surface of the remaining yarn through the raked claw, cut the remaining yarn in the deepest layer using hot air from the hot air injection nozzle, and use a scraper to remove the remaining yarn from the paper tube. The thread can be removed.

[0004]

According to the prior art, when the specifications of the paper tube change and the outer diameter of the paper tube fluctuates, the scraper is replaced with one having an opening diameter suitable for the outer diameter of the paper tube. And there is a problem that the flexibility of the equipment is poor.

In view of the above-mentioned problems in the prior art, it is an object of the present invention to mount a plurality of scrapers radially on a circular guide member, employ a scraper which can be deformed in a radial direction, or use a different opening diameter. A scraper unit for removing residual yarn from a paper tube capable of smoothly removing residual yarn from a paper tube having an arbitrary outer diameter by selectively using a plurality of scrapers having An object of the present invention is to provide a device for removing residual yarn from a pipe.

[0006]

According to a first aspect of the present invention, there is provided a circular guide member, a plurality of scrapers radially mounted on a front surface of the guide member, and a guide for guiding the scraper. The gist of the present invention is to provide a driving member that drives the members all at once in the radial direction.

The gist of the second invention is to provide a circular scraper that can be deformed in the radial direction and an opening / closing member that deforms the scraper.

[0008] The structure of the third invention comprises a plurality of scrapers having different opening diameters from each other.
The gist of this is to selectively set the position of use.

According to a fourth aspect of the present invention, there is provided a holder for detachably holding a paper tube, a cutter for cutting a remaining yarn of the paper tube on the holder, and a first invention for removing the remaining yarn of the paper tube on the holder. The gist is to provide a scraper unit according to any of the third inventions.

[0010] An auxiliary cutter for cutting off the residual yarn on the front surface of the scraper may be provided, or an auxiliary scraper for removing the residual yarn in a direction opposite to the scraper may be provided.

Further, a contact member for expanding the cut surface of the remaining yarn by the cutter can be provided.

Further, a finishing sub-cutter for cutting the remaining yarn by contacting the surface of the paper tube on the holder can be provided.

[0013]

According to the first aspect of the present invention, since the plurality of scrapers are radially mounted on the front surface of the circular guide member, the plurality of scrapers are simultaneously driven in the radial direction of the guide member via the drive member. The opening diameter can be adjusted arbitrarily. Therefore, the scraper can be removed by adjusting the opening diameter according to the outer diameter of the paper tube and inserting the paper tube in the axial direction so as to remove the remaining yarn from the paper tube.

According to the configuration of the second aspect, the circular scraper is deformable in the radial direction, and the diameter of the opening can be arbitrarily adjusted by deforming the scraper through the opening / closing member.

In the first and second aspects of the present invention, the scraper is adapted to the outer diameter of the paper tube even if the outer diameter of the paper tube is deformed like a drum in the axial direction due to the tension of the fiber yarn. By continuously adjusting the opening diameter, the remaining yarn on the paper tube can be easily removed.

According to the structure of the third aspect of the invention, since the plurality of scrapers have different opening diameters, a scraper adapted to the outer diameter of the paper tube can be selectively used at the use position on the axis of the paper tube. And the remaining yarn on the paper tube can be removed via the scraper at the use position.

According to the structure of the fourth invention, the holder is
Hold the paper tube detachably on the axis of the scraper unit,
The cutter cuts and pretreats the surface layer portion of the yarn remaining in the paper tube on the holder, and the scraper unit can remove the yarn remaining in the paper tube. Note that one or both of the holder and the scraper unit are driven to insert the paper tube into the scraper.

If an auxiliary cutter is provided, the auxiliary cutter
The residual yarn on the front surface of the scraper is cut to effectively prevent an excessive amount of the residual yarn from being thickly raised and accumulated on the front surface of the scraper. In addition, two or more auxiliary cutters having different cutting amounts of the remaining yarn may be arranged in tandem in the axial direction of the paper tube.

If the auxiliary scraper is provided, the auxiliary scraper can remove, for example, the remaining yarn of the flanged paper tube that cannot pass through the scraper in a direction opposite to the scraper.

When a contact member is provided, the contact member
The cutting surface of the remaining yarn by the cutter can be widened and can be separated smoothly from the paper tube.

The finishing auxiliary cutter is in contact with the surface of the paper tube, and can cut and remove the remaining yarns that are fitted in the fine grooves on the surface of the paper tube. In addition, it is difficult to remove the residual yarn in the groove of the paper tube by the scraper unit. However, it is preferable that the auxiliary cutter appropriately adjusts the pressing force on the paper tube in order to minimize damage to the surface of the paper tube.

[0022]

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

The apparatus for removing residual yarn from a paper tube mainly includes a holder 20, a cutter 31, and a scraper unit 40 (FIGS. 1 and 2).

The scraper unit 40 includes the vertical frame 1
The holder 20 is attached to a front end of a support shaft 27 that penetrates the scraper unit 40 back and forth. The support shaft 27 is supported by a slide base 27a that moves back and forth via a cylinder 27b. The support shaft 27 has a drive rod 28a connected to a cylinder 28 on the slide base 27a. The holder 20 extends and retracts the cylinder 27b and moves back and forth between a holding position (solid line in FIG. 1) protruding forward of the scraper unit 40 and a retracted position (two-dot chain line in FIG. 1) behind the scraper unit 40. (In the direction of arrow K1 in the figure).

The cutter 31 is rotatably mounted on a bracket 31a which moves back and forth along a guide rail 32. On the guide rail 32, a cylinder 33 for driving a bracket 31a is mounted.
The cylinder 33 is provided with a vertically long opening 11 a of the vertical frame 11.
, And is supported so as to be able to move up and down via a downward screw shaft 34. The screw shaft 34 is supported via a bearing 34a fixed to the upper part of the vertical frame 11, and a drive motor 34b
And a screw member 34 screwed to the screw shaft 34
c is fixed to a vertical member 34d that supports the guide rail 32. The cutter 31 includes a drive motor 34b, a screw shaft 3
4 (in the direction of the arrow K2a in FIG. 1) and can be driven back and forth through the cylinder 33 (in the direction of the arrow K2b in FIG. 1).

The holder 20 includes a guide head 21, opening and closing members 22, 22,..., An operating member 23, and a pressing member 25 (FIGS. 2 and 3). The guide head 21
The guide head 21 is mounted on the front end of the support shaft 27 via a set screw 21g.
are formed radially. Opening / closing member 2
2, 22,... Are formed in an arc shape on the outer periphery, are combined in a cylindrical shape as a whole, and are assembled so as to be movable in the radial direction with respect to the front surface of the guide head 21.
However, a guide head 21 is provided on the rear surface of each opening / closing member 22.
Rib 22 slidably engaged with the guide groove 21a on the side
a is formed, and the inner surface of the opening / closing member 22 is a tapered surface obliquely outward toward the front end.

The holding member 25 is screwed to the front surface of the guide head 21, and holds the flange portions 22 b of the opening / closing members 22, 22. I have. The opening and closing member 2
An endless belt 24 made of a stretchable elastic material is attached to the outer periphery of 2, 22,. The operating member 23 is
Are formed in a frusto-conical shape that fits the tapered surface of the inner surfaces of the opening / closing members 22, 22 ... and are incorporated in the opening / closing members 22, 22 ... so as to be movable in the axial direction. The operating member 23 is attached to the tip of a drive rod 28a provided inside the support shaft 27, and the drive rod 28a slidably penetrates the guide head 21 and the holding member 25 back and forth.

When the operating member 23 is advanced by extending the cylinder 28 (upper half of FIG. 3), the holder 20 reduces the outer diameter of the opening / closing members 22, 22,.
When the actuating member 23 is retracted via the cylinder 28 (the lower half of the figure), the opening / closing members 22, 22 are opposed to the belt 24.
The outer diameter of ... can be increased. That is, the holder 20 reduces the outer diameter of the opening / closing members 22, 22,.
.. Can be held in a detachable manner by expanding the outer diameter of the opening / closing members 22, 22,.

The scraper unit 40 is formed by radially mounting a plurality of scrapers 43 on a front surface of a circular guide member 41 (FIGS. 3 and 4). The scrapers 43 are fixed to the front surface of the moving block 42, respectively, and the guide member 41 is combined with a driving member 44 and an auxiliary guide member 45 coaxially. The guide member 41 is screwed around the circular opening 11d of the vertical frame 11 via set screws 41a, 41a,.
The guide member 41 penetrates the vertical frame 11 through 44a and is screwed to a mounting base 46 at the rear of the vertical frame 11. However, the mounting base 46 is connected to the screw member 47a of the screw shaft 47 via the bracket 46a (FIG. 1), and the screw shaft 4 connected to the drive motor 47c.
7 is supported via a bearing 47b. The auxiliary guide member 45 is mounted on the front surface of the guide member 41 via set screws 45a (see FIGS. 3 and 4).

On the front surface of the guide member 41, a T groove 41b,
Are formed radially, and a seal packing 41c that is in contact with the outer periphery of the cylindrical portion of the driving member 44 is mounted on the inner surface of the guide member 41. Further, the driving member 44
A front end portion of the T-groove 44b obliquely outward toward the rear,
44b are formed, and the T-grooves 44b, 44b.
Are arranged at the same pitch as the T grooves 41b of the guide member 41. An outer flange 45c is formed at the front end of the auxiliary guide member 45. Notches 45b, 45b,... Having the same width as the minimum width of the T groove 41b of the guide member 41 are formed on the outer flange 45c. Are radially formed at the same pitch as.

Each of the moving blocks 42 has a dovetail 42a formed on the rear surface of the guide member 41 so as to fit the T groove 41b, and an oblique dovetail 42b formed on the inner surface of the moving member 42 so as to fit the oblique T groove 44b of the driving member 44. I have. However,
The dovetails 42a and 42b are T-grooves 41b and 4b, respectively.
4b are simultaneously slidably engaged. Moving block 4
A scraper 43 is mounted on the front surface of 2 via set screws 42d, 42d. In addition, the scraper 43
Located in front of the guide member 41 and the auxiliary guide member 45,
The rib 43e on the rear surface is positioned by engaging the engaging groove 42e of the moving block 42. At the inward tip of each scraper 43, an acute-angled claw 43a is formed facing forward, and the rear of the claw 43a is cut diagonally.

The scraper unit 40 includes a drive motor 4
When the screw shaft 47 is rotated in the normal and reverse directions via 7c, the driving member 44 can be moved back and forth in the axial direction of the guide member 41 via the mounting base 46. Therefore, the driving member 44
Moves forward (upper half of FIG. 3), and the oblique T-groove 4
, And the scrapers 43, 43,... Are simultaneously driven radially outward through the 4b, 44b,... So that the opening diameter D of the scrapers 43, 43,. When the driving member 44 moves rearward (the lower half of the drawing), the scrapers 43, 43,... Can be simultaneously driven radially inward to adjust the opening diameter D = D2 <D1. . In addition, the guide member 41 and the auxiliary guide member 45 correctly guide each moving block 42 in the radial direction via the T groove 41b and the notch 45b, respectively.

The apparatus for removing residual yarn from a paper tube operates as follows.

The holder 20 is advanced to the holding position via the cylinder 27b (solid line in FIG. 1, FIG. 3), and the cutter 31 is retracted upward via the screw shaft. Also, cylinder 2
8, the diameter of the holder 20 is reduced (upper half of FIG. 3), and the opening diameter D of the scrapers 43, 43.
D1. Subsequently, the paper tube PT with the remaining yarn Y is set in the holder 20, the holder 20 is made large in diameter, and the paper tube PT is partially supported (the lower half portion in FIG. 3).
The opening diameters D = D2 <D1 of 43 ... the claws 43a, 43a
Is brought into contact with the surface of the paper tube PT.

Then, the cutter 31 is made to approach the paper tube PT via the screw shaft 34 (FIG. 5A), and the cutter 31 is reciprocated in the axial direction of the paper tube PT on the holder 20 via the cylinder 33. (The solid line and the two-dot chain line in FIG. 5A), the cutter 31 cuts the surface layer portion of the residual yarn Y on the paper core PT while depolarizing and rotating, and trims the residual yarn Y to the thickness t. it can. The remaining yarn Y cut by the cutter 31 slides down from the paper tube PT and is collected in a collection box (not shown).

Next, the holder 20 is retracted (FIG. 5B).
Of the paper tube PT with the scrapers 43, 43,.
, The scrapers 43, 43...
The remaining yarn Y of the paper tube PT can be pushed out in the axial direction and removed through the a, 43a,... (in the direction of the arrow Kb in FIG. 3B). At this time, the cutter 31 is attached to the scraper unit 4.
Reciprocating movement is repeated in small increments in front of 0 (solid line and two-dot chain line in FIG. 7B), and the remaining yarn Y on the front surface of the scrapers 43, 43.

When the paper core PT is retracted to the rear of the scraper unit 40 in this manner (the two-dot chain line in FIG. 1,
In FIG. 5 (C), the entire length of the paper tube PT passes through the scraper unit 40 to remove the residual yarn Y, and the paper tube PT can be withdrawn from the holder 20 and collected. The scraper unit 40 can remove the residual yarn Y of the paper tube PT having an arbitrary outer diameter by adjusting the opening diameter D of the scrapers 43. Furthermore, even when the outer diameter of the paper tube PT is deformed like a drum (FIG. 6), the scraper unit 40 continuously extends the opening diameter D of the scrapers 43, 43. By making the appropriate adjustment, the entire remaining yarn Y of the paper core PT can be smoothly removed.

[0038]

[Other Embodiments] The residual yarn removing device can be constituted by disposing a scraper unit 60 and upper and lower auxiliary scrapers 51, 51 so as to face each other, and combining a cutter 31 and a holder 70 (FIG. 7, FIG. 8). The lower auxiliary scraper 51 is attached to a fixed lower frame 52, and the upper auxiliary scraper 51 is attached to an upper frame 53 connected to a cylinder 54.

The holder 70 includes a pusher 71, a stopper 7
2 on the same straight line. The pusher 71 is formed to have the same diameter as the outer diameter of the paper core PT.
A center pin 71a to be inserted into the shaft hole PT3 is formed at the tip. Further, the pusher 71 has a slide base 71b that moves back and forth via a screw shaft 71c and a screw member 71d.
The screw shaft 71c is mounted on bearings 71e and 71e.
e and is connected to the drive motor 71f. On the other hand, the stopper 72 has a protruding portion 72a formed at the distal end, which fits the inner diameter of the paper tube PT, and is mounted on a mounting base 72b that moves back and forth via a cylinder 72c.

Each of the auxiliary scrapers 51, 51 is formed in a semicircular shape having a diameter larger than the outer diameter of the flange PT1 of the paper tube PT (FIGS. 8 and 9). At the front end of the inner surface of each auxiliary scraper 51, a rib 51a that fits the outer diameter of the paper core PT is formed, and on the front surface of the upper auxiliary scraper 51,
A notch 51b with a slit for accommodating the cutter 31 is formed. The auxiliary scrapers 51, 51 can be opened and closed up and down via a cylinder 54 and an upper frame 53.

The scraper unit 60 includes opening / closing members 61 and 62 that open and close vertically, a circular scraper 63 that can be deformed in the radial direction, and auxiliary cutters 66 a and 66 b that are combined with the scraper 63. The upper opening / closing member 61 is connected to the mounting base 6 connected to the cylinder 67.
4, one end of the lower opening / closing member 62 is connected to one end of the opening / closing member 61 via links 62a, 62a. The other end of the opening / closing member 62 is connected to the opening / closing member 61 via a bracket 62b and a joint 62c.
It is connected to the upper short stroke cylinder 65. The scraper 63 is commonly mounted on the front surfaces of the opening / closing members 61 and 62. The scraper 63 has an acute-angled claw 63a formed forwardly along the inner circumference, and a rear portion of the claw 63a is smoothly formed to have a large diameter, and an opening commonly formed by the opening / closing members 61, 62 and the mounting base 64. It penetrates the portion 61a.

The scraper 63 has a radial gap 6.
3b (FIGS. 8 and 10), and the thin portion 63 is formed on the opposite side of the gap 63b via an outward slit 63c.
g is formed. Also, the upper part of the scraper 63
Are fixed to the opening / closing member 61 via set screws inserted into the mounting holes 63e, 63e..., And the lower portion of the scraper 63 is fixed to the opening / closing member 62 via set screws inserted into the mounting holes 63f on the gap 63b side. . The gap 63
b, the slit 63c is located between the opening and closing members 61 and 62.

An auxiliary cutter 6 is provided above the scraper 63.
Notches 63d with slits 63d1 are formed corresponding to 6a and 66b (FIGS. 8 and 9). The negative rotation type auxiliary cutter 66a and the fixed auxiliary cutter 66b are supported via a common bracket 66c fixed to the front surface of the opening / closing member 61, and protrude forward of the scraper 63 via a notch 63d. The auxiliary cutter 66b is located in front of the auxiliary cutter 66a and is formed in a downward fan shape.

Therefore, the scraper unit 60 opens the opening / closing members 61 and 62 by extending the cylinder 65 (FIG. 1).
0), the scraper 63 can be elastically deformed in the radial direction so as to enlarge the gap 63b, so that the opening diameter D of the scraper 63 can be D = D1. In addition, the scraper unit 60 shortens the cylinder 65 and
1 and 62 can be slightly closed (two-dot chain line in the figure), and the opening diameter D of the scraper 63 can be set to D = D2 <D1.

Now, the pusher 71 is inserted via the screw shaft 71c.
Is projected forward of the scraper 63 (FIGS. 7 and 9), and the distal end of the stopper 72 enters the auxiliary scrapers 51 via the cylinder 72c.
0 is the center pin 71a of the pusher 71, the stopper 72
Between the auxiliary scrapers 51, 51 and the scraper unit 60 via the protrusion 72a of
Can be held detachably. When the auxiliary scrapers 51, 51 are closed via the cylinder 54, the auxiliary scrapers 51, 51 receive the flange PT1 of the paper tube PT, and the ribs 51a, 51a.
The end of the paper tube PT is slidably sandwiched between the two. on the other hand,
The cutter 31 reciprocates in the axial direction of the paper tube PT (solid line, two-dot chain line in FIG. 9), and removes the remaining yarn Y on the paper tube PT to a thickness t ≒ 0.
Trim to 5 mm (two-dot chain line in the figure).

Next, the scraper 6 is moved through the cylinder 65.
3, the opening diameter D is adjusted to correspond to the outer diameter of the paper tube PT, and the scraper unit 60 is advanced via the cylinder 67 toward the auxiliary scrapers 51, 51 (in the direction of arrow K3 in FIG. 9). At this time, the scraper 63 removes the remaining yarn Y on the paper core PT via the claw 63a (FIG. 11), and the auxiliary cutter 6
6b and 66a can trim the remaining yarn Y on the front surface of the scraper 63 to a thickness t1 厚 0.2 mm and a thickness t2 ≒ 0.1 mm, respectively.

When the scraper unit 60 advances just before the auxiliary scrapers 51, 51 (solid line in FIG. 12A), the scraper unit 60 is retracted (FIG. 12A).
, The pusher 71 and the stopper 72 are advanced synchronously (FIG. 8B). At this time, the auxiliary scrapers 51, 51 push the residual yarn Y on the paper tube PT through the ribs 51a, 51a in a direction opposite to the scraper 63 toward the pusher 71 and remove the remaining yarn Y from the paper tube PT. Further, the cutter 31 reciprocates in small increments in front of the upper auxiliary scraper 51 to trim the remaining yarn Y in front of the ribs 51a, 51a to a thickness t.

The pushers 71 are used as auxiliary scrapers 51, 51.
When the paper tube PT is removed from the holder 70 by penetrating the paper tube PT (FIG. 3C), the remaining yarn Y pushed out of the paper tube PT by the ribs 51a, 51a remains on the pusher 71. Then, the scraper unit 60 is moved forward again, and the pusher 71 is retracted (solid line and two-dot chain line in FIG. 3C), and the residual yarn Y on the pusher 71 is removed via the scraper 63.

Even if the paper tube PT is deformed like a drum by the residual yarn Y (FIG. 13), the scraper unit 60
By moving the opening diameter D in the axial direction of the paper tube PT while continuously adjusting the opening diameter D in accordance with the outer diameter of the paper tube (two-dot chain line in the figure), all the remaining yarns Y on the paper tube PT are smoothly removed. can do.

The cutter 31 may be provided with a contact member 35 (FIG. 14). However, FIG. (B) is the same as FIG.
FIG.

The contact member 35 is mounted downward on the bracket 31a for the cutter 31 via the bracket 35a. The lower surface of the contact member 35 is formed in a boat shape, and the top P at the lower end is located above the cutting edge of the cutter 31 and is slightly offset to one side of the cutter 31. Then, when the cutter 31 trims and aligns the residual yarn Y on the paper tube PT, the contact member 35 moves the cutting surface of the residual yarn Y by the cutter 31 when the cutter 31 advances (in the direction of arrow K4 in FIG. 3A). To separate the remaining yarn Y from the paper tube PT,
Can be dropped.

A finishing sub-cutter 36 that contacts the surface of the paper tube PT on the holder 20 may be provided (FIG. 15). However, FIGS. (B) and (C) correspond to B in FIG.
It is an expansion schematic diagram equivalent to an arrow, and a principal part enlarged view.

The sub cutter 36 is rotatably mounted on the tip of the swing arm 36a. The oscillating arm 36a is provided with respect to the rod 37a of the cylinder 37 having the guide rod.
The cylinder 37 is mounted on a movable body 38a of a rodless cylinder 38 so as to be vertically swingable via a bracket 36b and a mounting base 37b. Also,
A cylinder 39 connected to an intermediate portion of the swing arm 36a is mounted on the mounting base 37b via an upward bracket 37c.
Is attached. Note that the sub cutter 36 is arranged offset from the cutter 31 in the circumferential direction of the paper core PT (FIG. 15B), and there is no risk of obstructing the longitudinal movement of the cutter 31.

The sub cutter 36 extends the cylinder 37 to contact the surface of the paper tube PT on the holder 20, and
9 is slightly extended to press the surface of the paper tube PT. Then, when the rodless cylinder 38 is operated, the sub cutter 36 rotates in the negative direction and moves in the axial direction of the paper tube PT while slightly cutting the surface of the paper tube PT (FIG. 15A,
(C direction of each arrow K5), the groove PT2 on the surface of the paper tube PT.
, PT2... Can be removed by cutting.

The scraper unit 80 may include a plurality of scrapers 83i (i = a, b...) (FIG. 16). Each of the scrapers 83i has a different opening diameter D = Dj (j = a, b...) And is mounted on a common movable frame 81. Movable frame 8
1 is supported by, for example, guide rails 84, 84 so as to be able to move laterally (FIG. 1A), and is connected to a cylinder 85. Therefore, the scraper unit 80 is
Is expanded and contracted to move the movable frame 81 laterally (in the direction of arrow K7 in FIG. 7A), and the scraper 83i having an opening diameter D = Dj that matches the outer diameter of the paper tube PT (not shown) is moved to the paper tube PT
Can be selectively set to the use position on the axis C of

The movable frame 81 has external teeth 81a,
It may be of a rotary type connected to the motor 82 via a pinion 82a (FIG. 16B). The movable frame 81 is rotated via the motor 82 (in the direction of arrow K8 in FIG. 3B), and the scraper 83i having the opening diameter D = Dj is selectively set at the use position on the axis C of the paper tube PT. Can be.

In the above description, the scraper units 40, 60, 80 and the holders 20, 70 can be arbitrarily combined. The sub cutter 36 may be used in combination with the holder 70 in addition to the holder 20 shown in FIG.

It should be noted that the paper tube PT includes any material and shape called a so-called bobbin or drum, regardless of its name or illustration.

[0059]

As described above, the first embodiment according to this application is described.
According to the invention, by combining the circular guide member, the plurality of scrapers mounted on the guide member, and the driving member that drives the scraper in the radial direction, the scraper can arbitrarily adjust the opening diameter. There is an excellent effect that the residual yarn of a paper tube having an arbitrary outer diameter can be removed smoothly.

According to the second and third aspects of the invention, the same effect as that of the first aspect of the invention can be realized by using a scraper which can be deformed in the radial direction or a plurality of scrapers having mutually different opening diameters. .

According to the fourth invention, by combining the holder and the cutter with the scraper unit according to any one of the first to third inventions, the cutter trims and trims the remaining yarn of the paper tube on the holder. The scraper unit can remove the residual yarn of the paper tube at a stroke.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the overall configuration.

FIG. 2 is an enlarged exploded perspective view of a main part.

FIG. 3 is an enlarged cross-sectional view corresponding to line XX of FIG. 2;

FIG. 4 is an exploded perspective view of the scraper unit.

FIG. 5 is an explanatory diagram of an operation (1).

FIG. 6 is an operation explanatory view (2).

FIG. 7 is a view corresponding to FIG. 1, showing another embodiment.

8 is an enlarged exploded perspective view of a main part of FIG. 7;

FIG. 9 is an enlarged cross-sectional view corresponding to the line ZZ in FIG. 8;

FIG. 10 is an explanatory front view of the scraper unit.

FIG. 11 is an operation explanatory view (3).

FIG. 12 is an operation explanatory view (4).

FIG. 13 is an operation explanatory view (5).

FIG. 14 is an explanatory diagram (1) of a main part configuration showing another embodiment.

FIG. 15 is an explanatory diagram (2) of a main part configuration showing another embodiment.

FIG. 16 is an explanatory front view of a scraper unit showing another embodiment.

[Explanation of symbols]

 PT: Paper tube Y: Residual thread D, D1, D2, Dj (j = a, b ...) Opening diameter 20, 70 Holder 31 Cutter 35 Contact member 36 Sub cutter 51 Auxiliary scraper 40, 60 80: Scraper unit 41: Guide member 43, 63, 83i (i = a, b ...) Scraper 44: Driving member 61, 62 ... Opening / closing member 66a, 66b: Auxiliary cutter

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiharu Kitaguchi 20-20 Miyanaga-shi, Matsuto-shi, Ishikawa

Claims (8)

[Claims] 1. A paper tube comprising: a circular guide member; a plurality of scrapers radially mounted on a front surface of the guide member; and a driving member for simultaneously driving the scrapers in a radial direction of the guide member. Scraper unit for removing residual yarn. 2. A scraper unit for removing residual yarn from a paper tube, comprising: a circular scraper that can be deformed in a radial direction; and an opening / closing member that deforms the scraper. 3. A scraper unit for removing residual yarn from a paper tube, comprising a plurality of scrapers having mutually different opening diameters, wherein the scrapers are selectively set at a use position. 4. A holder for detachably holding a paper tube, a cutter for cutting a remaining yarn of the paper tube on the holder, and removing a remaining yarn of the paper tube on the holder. An apparatus for removing residual yarn from a paper core, comprising the scraper unit according to any one of the above. 5. An apparatus for removing residual yarn from a paper tube according to claim 4, further comprising an auxiliary cutter for cutting the residual yarn on the front surface of said scraper. 6. The paper tube residual yarn removing device according to claim 4, further comprising an auxiliary scraper for removing residual yarn in a direction opposite to the scraper. 7. The apparatus for removing residual yarn from a paper tube according to claim 4, further comprising a contact member for expanding a cut surface of the residual yarn by the cutter. 8. The paper tube rest according to claim 4, further comprising a finishing sub-cutter for cutting the remaining yarn by contacting the surface of the paper tube on the holder. Thread removal device.