JP2020172391A - Bobbin and take-up device - Google Patents

Abstract

To suppress damage caused by a temperature drop of an object to be wound around a bobbin.SOLUTION: There is provided a bobbin 20 attached to a rotating device including an internal roll 38 and an outer roll, and configured to wind an object to be wound. The bobbin includes: an outer cylinder 22 which has a plurality of divided bodies 40 divided in a circumferential direction and is rotated by the internal roll 38 arranged inside and the outer roll arranged outside, and around which the object to be wound is wound around an outer peripheral surface 22A; an inner cylinder 24 which is arranged inside the outer cylinder 22; and a feed screw mechanism 70a which has a slide member 90 connecting the inner cylinder 24 and the divided bodies 40 and a screw member 72 arranged along an axial direction of the inner cylinder 24, moving the slide member 90 in an axial direction of the outer cylinder 22 as it rotates, and moving the divided bodies 40 in a radial direction of a cylindrical body with respect to the inner cylinder 24.SELECTED DRAWING: Figure 4

Description

The present invention relates to a bobbin and a winding device.

There is a reel having a rotating shaft and winding a steel plate (strip) (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 63-5821

By the way, there is a bobbin that is mounted on a rotating device including an internal roll and an external roll to wind an object to be wound such as a steel plate. The bobbin is rotated by an inner roll arranged inside and an outer roll arranged outside. As a result, the object to be wound is wound around the outer peripheral surface of the bobbin in a cylindrical shape (coil shape).

It is conceivable that the bobbin described above winds up the object to be wound at a high temperature. Here, when the temperature of the high-temperature winding object wound around the bobbin drops, the cylindrical winding object tends to shrink toward the center.

However, the object to be wound cannot be contracted toward the center when the object is wound around the bobbin, and the object to be wound may be damaged.

In consideration of the above facts, an object of the present invention is to suppress damage caused by a temperature drop of the winding object wound around the bobbin.

The bobbin according to the first aspect is a bobbin that is mounted on a rotating device including an internal roll and an external roll to wind up an object to be wound, and has a plurality of divided bodies divided in the circumferential direction and is arranged inside. A tubular body that is rotated by the inner roll and the outer roll arranged on the outside and around which a winding object is wound around the outer peripheral surface, a core body arranged inside the tubular body, and the core. A movable member that connects the body and the divided body is arranged along the axial direction of the tubular body, and the movable member is moved in the axial direction of the tubular body with rotation to the core body. A feed screw mechanism including a screw member for moving the divided body in the radial direction of the tubular body is provided.

According to the above configuration, the rotating device includes an internal roll and an external roll. A bobbin that winds up the object to be wound is mounted on this rotating device. The bobbin includes a tubular body, a core body, and a feed screw mechanism.

The tubular body is rotated by an inner roll arranged inside and an outer roll arranged outside. As a result, the object to be wound is wound around the outer peripheral surface of the tubular body. Further, the tubular body has a plurality of divided bodies divided in the circumferential direction. A core body is arranged inside the tubular body.

The feed screw mechanism has a movable member and a screw member. The movable member connects the core body and the divided body. The screw member is arranged along the axial direction of the tubular body. Further, in the screw member, the movable member is moved in the axial direction of the tubular body with rotation, and the divided body is moved in the radial direction of the tubular body with respect to the core body. That is, the movable member converts the rotational motion of the screw member into a linear motion of the split body along the radial direction of the tubular body.

Here, when the object to be wound in a high temperature state is wound in a cylindrical shape on the outer peripheral surface of the tubular body and the split body is moved to the center side of the tubular body by the feed screw mechanism, the tubular body becomes the center. It contracts to the side (inward in the radial direction). As a result, a gap is created between the outer peripheral surface of the tubular body and the inner peripheral surface of the cylindrical winding object. As a result, when the temperature of the object to be wound in a high temperature state drops, the cylindrical object to be wound can be shrunk toward the center. Therefore, the damage caused by the temperature drop of the object to be wound around the bobbin is suppressed.

Further, the screw members are arranged along the axial direction of the tubular body. Thereby, for example, the end portion of the screw member can be operated from the axial direction of the tubular body by a tool or the like. Therefore, even when the object to be wound is wound around the outer peripheral surface of the tubular body, the end portion of the screw member can be rotated by the tool to move the divided body toward the center side of the tubular body. Further, the amount of movement of the divided body can be easily adjusted by the amount of rotation of the screw member.

Further, the rotation of the screw member can be easily restrained by a detent member such as a fixing nut. Then, by winding the winding object around the outer peripheral surface of the tubular body while restraining the rotation of the screw member, the split body is suppressed from moving toward the center side of the tubular body. Therefore, miswinding and breakage of the object to be wound are suppressed.

The bobbin according to the second aspect is the bobbin according to the first aspect, wherein the feed screw mechanism has a pair of the movable members arranged in the axial direction of the tubular body, and the pair of the movable members have the tubular shape. In a cross section along the axial direction of the body, the split body or the core body has a pair of slide slopes that are inclined in opposite directions to the axial direction of the tubular body, and the pair of slide slopes are each Having a pair of guide slopes to be contacted, the screw member moves the pair of movable members in opposite directions in the axial direction of the tubular body, and the pair of slides along the pair of guide slopes. Slide the slope.

According to the above configuration, the feed screw mechanism has a pair of movable members arranged in the axial direction of the tubular body. The pair of movable members has a pair of slide slopes that incline in opposite directions in a cross section along the axial direction of the tubular body. Further, the divided body or the core body has a pair of guide slopes. A pair of slide slopes are in contact with the pair of guide slopes.

Here, the screw member moves the pair of movable members in opposite directions in the axial direction of the tubular body, and slides the pair of slide slopes along the pair of guide slopes. As a result, the divided body moves in the radial direction of the tubular body according to the inclination angles of the pair of guide slopes and the pair of slide slopes.

Further, as described above, the pair of slide slopes are inclined in opposite directions in the cross section along the axial direction of the tubular body. Therefore, when the pair of guide slopes are in contact with the pair of slide slopes, it is possible to prevent the split body and the core body from shifting in the axial direction of the tubular body. As a result, when the divided body moves in the radial direction of the tubular body, the position of the center of gravity of the bobbin is suppressed from moving. Therefore, the bobbin is stable.

The bobbin according to the third aspect is the bobbin according to the second aspect, wherein the movable member has two slide slopes facing opposite sides in the radial direction of the tubular body, and the split body or the core body. Has two guide slopes that face each other in the radial direction of the tubular body and that the two slide slopes are in contact with each other.

According to the above configuration, the movable member has two slide slopes that face opposite sides in the radial direction of the tubular body. Further, the divided body or the core body has two guide slopes facing opposite to each other in the radial direction of the tubular body. The two guide slopes are in contact with the two slide slopes, respectively.

As a result, when the pair of movable members are moved in the direction of approaching each other by the screw member, the divided body is moved to one side in the radial direction of the tubular body. On the contrary, when the pair of movable members are moved away from each other by the screw member, the divided body is moved to the other side in the radial direction of the tubular body. That is, in this aspect, the divided body can be moved to both sides in the radial direction by the screw member.

The bobbin according to the fourth aspect is the bobbin according to any one of the first to third aspects, wherein the screw member is a first screw portion connected to one of the movable members of the pair of movable members. And a second screw portion which is a reverse screw with the first screw portion and is connected to the other movable member of the pair of the movable members.

According to the above configuration, the screw member has a first screw portion and a second screw portion. The first screw portion is connected to one of the movable members of the pair of movable members. On the other hand, the second screw portion is a reverse screw with the first screw portion, and is connected to the other movable member of the pair of movable members. As a result, the pair of movable members can be moved in opposite directions at the same time as the screw member rotates.

The bobbin according to the fifth aspect is the bobbin according to any one of the first to fourth aspects, in which the plurality of divided bodies are arranged on the circumference of the tubular body, and the internal roll is formed from the inside. Each of the arc-shaped portions to be pressure-welded is provided with a pair of inclined portions that face each other and are inclined to one side with respect to the axial direction of the tubular body at the end portions of the adjacent arc-shaped portions. ..

According to the above configuration, each of the plurality of divided bodies has an arcuate portion. The arcuate portion is arranged on the circumference of the tubular body. An internal roll is pressed against the arcuate portion from the inside. Further, at the end of the adjacent arcuate portions, a pair of inclined portions that are inclined to one side with respect to the axial direction of the tubular body are provided.

Here, when the ends of the adjacent arcuate portions are parallel to the axial direction of the tubular body, for example, if there is a step between the ends of the adjacent arcuate portions, the internal roll makes the step at once. You will get over it. Therefore, the vibration of the tubular body tends to increase.

On the other hand, in this embodiment, as described above, a pair of inclined portions are provided at the ends of adjacent arcuate portions. The pair of inclined portions are inclined to one side with respect to the axial direction of the tubular body. As a result, even if there is a step between the pair of inclined portions, the internal roll gradually overcomes the step from one end side. Therefore, since the vibration of the tubular body is reduced, damage to the tubular body is suppressed.

The winding device according to the sixth aspect is a rotating device including an internal roll and an external roll, and a bobbin according to any one of the first to fifth aspects, which is attached to the rotating device and winds up an object to be wound. And.

According to the above configuration, as in the first aspect, damage due to a temperature drop of the winding object wound around the bobbin can be suppressed.

As described above, according to the present invention, it is possible to suppress damage caused by a temperature drop of the winding object wound around the bobbin.

FIG. 1 is a side view of the winding device according to the embodiment as viewed from the axial direction of the bobbin. FIG. 2 is a side view showing a process of winding an object to be wound by the bobbin of the winding device shown in FIG. FIG. 3 is a sectional view taken along line 3-3 of FIG. It is a side view which saw the bobbin shown in FIG. 1 from the axial direction. FIG. 5A is a plan view of the adjacent divided bodies shown in FIG. 4 as viewed from the inside of the outer cylinder. FIG. 5B is a plan view corresponding to FIG. 5A showing a state in which the outer cylinder shown in FIG. 4 is contracted toward the center. FIG. 6A is a sectional view taken along line 6A-6A of FIG. FIG. 6B is a cross-sectional view corresponding to FIG. 6A showing a state in which the outer cylinder shown in FIG. 4 is contracted toward the center. FIG. 7 is an enlarged side view showing the feed screw mechanism shown in FIG. FIG. 8A is a cross-sectional view taken along the line 8A-8A of FIG. FIG. 8B is a cross-sectional view corresponding to FIG. 8A showing a state in which the outer cylinder shown in FIG. 4 is contracted toward the center.

Hereinafter, the winding device according to the embodiment will be described.

(Winling device)
1 and 2 show a winding device 10 according to the present embodiment. The winding device 10 includes a bobbin 20 and a rotating device 30. The winding device 10 is a device that winds the object P to be wound by the bobbin 20 while rotating the bobbin 20 by the rotating device 30.

Examples of the object P to be wound include a metal plate such as a steel plate, a metal wire rod of a steel wire, and the like.

(Bobbin)
The bobbin 20 is detachably attached to the rotating device 30. The bobbin 20 includes an outer cylinder 22, an inner cylinder 24, and a feed screw mechanism 70 (see FIG. 4). The outer cylinder 22 is made of steel, for example, and is formed in a cylindrical shape as a whole. As shown in FIG. 3, both ends of the outer cylinder 22 in the axial direction (arrow K direction) are open. The winding object P (see FIG. 2) is wound around the outer peripheral surface 22A of the outer cylinder 22. The outer cylinder 22 is an example of a tubular body.

The inner cylinder 24 is made of steel, for example, and is formed in a cylindrical shape whose diameter is smaller than the diameter of the outer cylinder 22. The inner cylinder 24 is arranged inside the outer cylinder 22. Further, both ends of the inner cylinder 24 in the axial direction are open. The inner cylinder 24 and the outer cylinder 22 are connected to each other via a feed screw mechanism 70 (see FIG. 4), which will be described later, in a state of being arranged on the same axis (central axis C). Note that the feed screw mechanism 70 is not shown in FIGS. 1 and 3.

The width W1 of the inner cylinder 24 is narrower than the width W2 of the outer cylinder 22. As a result, installation spaces for a pair of internal rolls 38, which will be described later, are secured on both sides of the inner cylinder 24 in the outer cylinder 22 in the axial direction. Further, both sides of the outer cylinder 22 in the axial direction are contact regions 22Z. The contact region 22Z is formed in an annular shape along the circumference of the outer cylinder 22. A pair of internal rolls 38 are in contact with the inner peripheral surface 22B of the contact region 22Z. Further, a pair of external rolls 36, which will be described later, are brought into contact with the outer peripheral surface 22A of the contact region 22Z. The inner cylinder 24 is an example of a core body.

(Transport device)
As shown in FIGS. 1 and 2, the rotating device 30 includes a pair of external rolls 36 and a pair of internal rolls 38. The pair of outer rolls 36 and the pair of inner rolls 38 are formed in a columnar shape and are rotatably supported by a bearing portion (not shown). Further, the plurality of pairs of outer rolls 36 and the pair of inner rolls 38 are arranged parallel to each other and horizontally.

The pair of external rolls 36 are arranged at intervals in their respective radial directions. Further, the pair of external rolls 36 are rotated in the same direction (direction of arrow a) by a drive source (not shown) such as a motor. That is, the plurality of external rolls 36 are drive rolls. The bobbin 20 is placed on the pair of external rolls 36.

A transport path 34 is formed between the pair of external rolls 36. The transport path 34 is formed by a plurality of transport rolls 32, and transports the object P to be wound between the pair of external rolls 36 as indicated by an arrow M. The plurality of transport rolls 32 are arranged along the transport path 34. Each transport roll 32 is formed in a columnar shape and is rotatably supported by a bearing portion (not shown).

As shown in FIG. 3, the pair of internal rolls 38 of the rotating device 30 are arranged coaxially and at intervals in the respective axial directions. Further, the pair of internal rolls 38 are inserted into and out of the outer cylinder 22 from both sides in the axial direction of the outer cylinder 22. The pair of internal rolls 38 are in contact with the contact region 22Z of the inner peripheral surface 22B of the outer cylinder 22 described above on both sides of the inner cylinder 24 in the axial direction.

The bobbin 20 is removed from the rotating device 30 with a pair of internal rolls 38 pulled out from the inside of the outer cylinder 22.

The pair of internal rolls 38 are arranged between the pair of external rolls 36 (see FIG. 1) in a plan view. The pair of internal rolls 38 are movably supported in the vertical direction by an elevating mechanism (not shown). The outer cylinder 22 is rotatably held by the pair of inner rolls 38 and the pair of outer rolls 36.

Here, when the object P to be wound is wound by the bobbin 20, the bobbin 20 is first attached to the rotating device 30 as shown in FIG. Specifically, the outer cylinder 22 of the bobbin 20 is placed on the pair of outer rolls 36. Next, one end of the winding object P arranged along the transport path 34 is fixed to the outer peripheral surface 22A of the outer cylinder 22 by a fixture (not shown).

Next, a pair of internal rolls 38 are inserted inside the outer cylinder 22. In this state, the pair of internal rolls 38 are moved downward by an elevating mechanism (not shown), and the pair of internal rolls 38 are pressed against the contact region 22Z (see FIG. 3) of the inner peripheral surface 22B of the outer cylinder 22. As a result, the outer cylinder 22 is pressed against the pair of outer rolls 36 by the pair of inner rolls 38.

Next, a pair of external rolls 36 are rotated in a predetermined direction (direction of arrow a) by a drive source (not shown). As a result, the bobbins 20 placed on the pair of external rolls 36 rotate in a predetermined direction (direction of arrow b), and the winding object P is cylindrically wound around the outer peripheral surface 22A of the outer cylinder 22. At this time, the pair of internal rolls 38 are rotated in a predetermined direction (direction of arrow b). That is, the pair of internal rolls 38 are driven rolls that rotate in a predetermined direction (arrow b direction) as the bobbin 20 rotates.

In a state where the winding object P is wound around the outer peripheral surface 22A of the outer cylinder 22, the pair of external rolls 36 come into contact with the outer peripheral surface of the cylindrical winding object P.

Here, as shown in FIG. 2, as the thickness t of the cylindrical winding object P increases as the winding object P is wound around the outer peripheral surface 22A of the outer cylinder 22, the thickness t of the cylindrical winding object P increases, as shown by the solid line. As the pair of internal rolls 38 rise, the center C (rotation center) of the bobbin 20 gradually rises. In this way, the winding device 10 winds the winding object P with the bobbin 20 while moving the center C of the bobbin 20.

In the present embodiment, the pair of external rolls 36 are used as drive rolls, but at least one of the pair of external rolls 36 and the internal rolls 38 can be used as drive rolls.

(Bobbin scaling mechanism)
Next, the expansion / contraction mechanism of the bobbin 20 will be described.

As shown in FIG. 4, the outer cylinder 22 of the bobbin 20 has a plurality of (four in the present embodiment) divided bodies 40 divided in the circumferential direction (arrow F direction). The plurality of divided bodies 40 are each connected to the inner cylinder 24 via a feed screw mechanism 70.

As shown in FIG. 3, each feed screw mechanism 70 movably supports the divided body 40 with respect to the inner cylinder 24 in the radial direction of the outer cylinder 22. By moving the plurality of divided bodies 40 in the radial direction of the outer cylinder 22 by these feed screw mechanisms 70, the outer cylinder 22 contracts or expands in the radial direction (arrow R direction), and the outer diameter D of the outer cylinder 22 Fluctuates. Hereinafter, the expansion / contraction mechanism of the bobbin 20 will be specifically described.

The arrow R1 appropriately shown in each figure indicates the radial inside (center C side) of the outer cylinder 22 and the inner cylinder 24, and the arrow R2 indicates the radial outside (outside) of the outer cylinder 22 and the inner cylinder 24. Shown.

(Divided body)
The divided body 40 has an arcuate portion 42 and a plurality of reinforcing ribs 44. The arc-shaped portion 42 is curved in an arc shape along the circumference of the outer cylinder 22. The outer surface 42A of the arcuate portion 42 forms the outer peripheral surface 22A of the outer cylinder 22. That is, the winding object P (see FIG. 1) is wound around the outer surface 42A of the arcuate portion 42.

Further, the inner surface 42B of the arcuate portion 42 forms the inner peripheral surface 22B of the outer cylinder 22. That is, both sides of the outer cylinder 22 on the inner surface 42B of the arcuate portion 42 in the axial direction are contact regions 22Z (see FIG. 5A) of the pair of inner rolls 38. A plurality of reinforcing ribs 44 are provided on the inner surface 42B of the arcuate portion 42. The plurality of reinforcing ribs 44 can be omitted.

In FIGS. 5A and 5B, a pair of arcuate portions 42 adjacent to each other in the circumferential direction (arrow F direction) of the outer cylinder 22 are shown. In FIGS. 5A and 5B, for convenience of explanation, one arc-shaped portion 42 is referred to as an arc-shaped portion 42X and the other arc-shaped portion 42 is referred to as an arc-shaped portion 42Y.

A concave portion 50 and a pair of convex portions 52 are formed at the end of one arcuate portion 42X. The recess 50 is formed in the central portion of the end portion of the arcuate portion 42X. The recess 50 is arranged at a position outside the contact area 22Z. Further, the recess 50 is formed in a rectangular shape. The recess 50 has a pair of side portions 50S and a bottom portion 50L connecting the pair of side portions 50S.

The pair of convex portions 52 are formed on both sides of the concave portion 50. The pair of convex portions 52 are arranged in the contact region 22Z of the arcuate portion 42X. Each convex portion 52 is formed in a triangular shape. Further, the top of each convex portion 52 is an inclined portion 52K. The inclined portion 52K is inclined to one side in the circumferential direction (arrow F direction) of the outer cylinder 22 with respect to the axial direction (central axis C) of the outer cylinder 22.

A convex portion 60 and a pair of concave portions 62 are formed at the end of the other arcuate portion 42Y. The convex portion 60 is formed at the central portion of the end portion of the arcuate portion 42Y. The convex portion 60 is arranged at a position outside the contact region 22Z of the arcuate portion 42X. Further, the convex portion 60 is formed in a rectangular shape. The convex portion 60 has a pair of side portions 60S and a top portion 60T connecting the pair of side portions 60S.

The convex portion 60 is removably inserted into the concave portion 50 of one of the arcuate portions 42X. A gap H1 is formed between the pair of side portions 60S of the convex portion 60 and the pair of side portions 50S of the concave portion 50, respectively. Further, a gap H2 is formed between the top 60T of the convex portion 60 and the bottom 50L of the concave portion 50.

The pair of concave portions 62 are formed on both sides of the convex portions 60. The pair of recesses 62 are arranged in the contact region 22Z of the arcuate portion 42Y. Further, the pair of recesses 62 are formed in a triangular shape. The bottom of each recess 62 is an inclined portion 62K. The inclined portion 62K is inclined to one side in the circumferential direction (arrow F direction) of the outer cylinder 22 with respect to the axial direction (central axis C) of the outer cylinder 22.

A pair of convex portions 52 of one arcuate portion 42X are inserted into the pair of concave portions 62 so that they can be inserted and removed. The inclined portion 62K of the concave portion 62 and the inclined portion 52K of the convex portion 52 face each other. More specifically, the inclined portion 62K and the inclined portion 52K are parallel to each other. A gap H3 is formed between the inclined portion 62K and the inclined portion 52K. Here, the one arcuate portion 42X and the other arcuate portion 42Y can be approached in the circumferential direction of the outer cylinder 22 by the gaps H2 and H3.

(Feed screw mechanism)
As shown in FIGS. 6A and 6B, the feed screw mechanism 70 has a screw member 72, a pair of slide members 90, a pair of inner rails 100, and a pair of outer rails 110. The slide member 90 is an example of a movable member.

(Screw member)
The screw member 72 is arranged between the outer cylinder 22 and the inner cylinder 24. Further, the screw member 72 is arranged along the axial direction of the outer cylinder 22. The screw member 72 has, for example, a pair of bolts 74 and a connector 76. The pair of bolts 74 are connected via the connector 76 in a state of being arranged in each axial direction.

The screw member 72 may be, for example, a stud bolt having screw portions formed at both ends thereof.

The screw member 72 is rotatably supported by a support member 80 provided on the outer peripheral surface 24A of the inner cylinder 24. The support member 80 has a pair of facing portions 80T. The pair of facing portions 80T face each other in the axial direction of the outer cylinder 22. Circular through holes 82 are formed in each of the pair of facing portions 80T. A screw member 72 is rotatably penetrated through these through holes 82.

Further, the connector 76 is sandwiched between the pair of facing portions 80T. The connector 76 is made larger than the through hole 82. By engaging the connector 76 with the peripheral edge of the through hole 82, the axial movement of the screw member 72 is restricted (constrained).

A first screw portion N1 is provided on one end 72E1 side of the screw member 72. A movable nut 84 is attached to the first screw portion N1. A second screw portion N2 is provided on the other end 72E2 side of the screw member 72. A movable nut 84 is attached to the second screw portion N2. Further, a fixing nut 86 for fixing the movable nut 84 is attached to the second screw portion N2.

Here, the second screw portion N2 is a reverse screw with the first screw portion N1. That is, one of the first screw portion N1 and the second screw portion N2 is a right-hand thread, and the other of the first screw portion N1 and the second screw portion N2 is a left-hand thread. Therefore, when the screw member 72 is rotated, the two movable nuts 84 move in opposite directions in the axial direction of the screw member 72.

A pair of slide members 90 are attached to the screw member 72. The pair of slide members 90 are arranged on both end sides of the screw member 72. The pair of slide members 90 are respectively connected to the inner cylinder 24 via a pair of inner rails 100. Further, each of the pair of slide members 90 is connected to the outer cylinder 22 via a pair of outer rails 110.

The pair of slide members 90, the pair of inner rails 100, and the pair of outer rails 110 have screw members in a cross section along the axial direction of the outer cylinder 22 (a cross section obtained by cutting the outer cylinder 22 along the axial direction). It is arranged symmetrically (line-symmetrically) with respect to the virtual line V passing through the central portion of 72 and along the radial direction of the outer cylinder 22. Therefore, in the following, the configurations of the slide member 90, the inner rail 100, and the outer rail 110 arranged on the one end 72E1 side of the screw member 72 will be described, and the slide member arranged on the other end 72E2 side of the screw member 72 will be described. The description of the configuration of 90, the inner rail 100, and the outer rail 110 will be omitted as appropriate.

(Movable member)
The slide member 90 is formed in a trapezoidal shape in a cross section along the axial direction of the outer cylinder 22. A circular through hole 91 is formed in the central portion of the slide member 90. One end 72E1 side of the screw member 72 is penetrated through the through hole 91. Further, a movable nut 84 attached to one end 72E1 side of the screw member 72 is fixed to the end surface 90E of the slide member 90 by welding or the like.

Here, when the screw member 72 is rotated, the movable nut 84 moves in the axial direction of the screw member 72. As a result, the slide member 90 fixed to the movable nut 84 moves in the axial direction of the screw member 72. The slide member 90 moves along the axial direction of the screw member 72 between the initial position (enlarged position) shown in FIGS. 6A and 8A and the contracted position shown in FIGS. 6B and 8B.

The surface of the slide member 90 on the inner cylinder 24 side is an inward sliding surface S1. The inwardly sliding surface S1 faces the inner cylinder 24 side and has a flat surface along the axial direction of the outer cylinder 22 in a cross section along the axial direction of the outer cylinder 22.

As shown in FIG. 7, the end portion of the slide member 90 on the inner cylinder 24 side is a connecting portion (inner connecting portion) connected to the inner cylinder 24 via the inner rail 100 described later. A pair of inner protrusions 92 are provided at the ends of the slide member 90 on the inner cylinder 24 side. The pair of inner protrusions 92 project from the side surfaces 92S on both sides of the slide member 90.

The surface of the inner protrusion 92 on the inner cylinder 24 side is the above-mentioned inward sliding surface S1. Further, the surface of the inner protrusion 92 on the outer cylinder 22 side is an outward sliding surface S2. The outward slide surface S2 faces the outer cylinder 22 side and is a flat surface parallel to the inward slide surface S1. That is, the outward slide surface S2 faces the side opposite to the inward slide surface S1 in the radial direction of the outer cylinder 22, and is a plane along the axial direction of the outer cylinder 22 in the cross section along the axial direction of the outer cylinder 22. Has been done.

As shown in FIG. 6A, the surface of the slide member 90 on the outer cylinder 22 side is an outward slide slope S3. The outward slide slope S3 faces the outer cylinder 22 side, and in the cross section along the axial direction of the outer cylinder 22, the outward slide slope S3 is directed from the central side of the screw member 72 toward the one end 72E1 side with respect to the axial direction of the outer cylinder 22. The slope is inclined toward the inner cylinder 24 side.

The outward slide slopes S3 of the pair of slide members 90 arranged on both sides of the screw member 72 have a cross section along the axial direction of the outer cylinder 22 (a cross section obtained by cutting the outer cylinder 22 along the axial direction). The screw member 72 (outer cylinder 22) is inclined in opposite directions with respect to the axial direction.

As shown in FIG. 7, the end portion of the slide member 90 on the outer cylinder 22 side is a connecting portion (outer connecting portion) connected to the outer cylinder 22 via the outer rail 110 described later. A pair of outer protrusions 94 are provided at the ends of the slide member 90 on the outer cylinder 22 side. The pair of outer protrusions 94 project from the side surfaces 92S on both sides of the slide member 90. The surface of the pair of outer protrusions 94 on the outer cylinder 22 side is the above-mentioned outward slide slope S3.

Further, the surface of the pair of outer protrusions 94 on the inner cylinder 24 side is an inward slide slope S4. The inward slide slope S4 faces the inner cylinder 24 side and is a slope parallel to the outward slide slope S3. That is, the inward slide slope S4 faces the side opposite to the outward slide slope S3 in the radial direction of the outer cylinder 22, and is screwed with respect to the axial direction of the outer cylinder 22 in the cross section along the axial direction of the outer cylinder 22. The slope is inclined toward the inner cylinder 24 side from the center side of the member 72 toward one end 72E1 side.

The inward slide slopes S4 of the pair of slide members 90 arranged on both sides of the screw member 72 have a cross section along the axial direction of the outer cylinder 22 with respect to the axial direction of the screw member 72 (outer cylinder 22). They are tilted in opposite directions. Further, the outward slide slope S3 and the inward slide slope S4 are examples of slide slopes.

(Inner rail)
The inner rail 100 is made of steel, for example, and is fixed to the outer peripheral surface 24A of the inner cylinder 24 by welding or the like. Further, the inner rail 100 is formed in a C shape in which the outer cylinder 22 side is open when viewed from the axial direction of the outer cylinder 22. Inside the inner rail 100, an end portion (inner connecting portion) of the slide member 90 on the inner cylinder 24 side is inserted.

As shown in FIGS. 7 and 8A, the bottom surface of the inner rail 100 is an outward guide surface G1. The outward guide surface G1 faces the outer cylinder 22 side and is a flat surface parallel to the inward slide surface S1 of the slide member 90. The inward sliding surface S1 of the slide member 90 is slidably contacted with the outward guide surface G1.

The inner rail 100 has a pair of side wall portions 100S facing each other in the circumferential direction (arrow F direction) of the outer cylinder 22. A pair of groove portions 102 extending in the axial direction of the outer cylinder 22 are formed on the inner wall surface of the pair of side wall portions 100S. A pair of inner protrusions 92 of the slide member 90 are slidably inserted into the pair of groove portions 102.

The inner surface of the groove 102 on the outer cylinder 22 side is an inward guide surface G2 arranged on the outer cylinder 22 side of the inner protrusion 92. The inward guide surface G2 faces the inner cylinder 24 side and is a flat surface parallel to the inward slide surface S1. The outward slide surface S2 of the inner protrusion 92 is slidably contacted with the inward guide surface G2.

(Outer rail)
As shown in FIG. 7, the outer rail 110 is made of, for example, steel. The outer rail 110 has a pedestal 112, a pair of rail members 114, and a wedge-shaped member 120. The pedestal 112 is fixed to the inner peripheral surface 22B of the outer cylinder 22 by welding or the like. A pair of rail members 114 are fixed to the pedestal 112 by bolts 116.

The pair of rail members 114 face each other in the circumferential direction (arrow F direction) of the outer cylinder 22. A wedge-shaped member 120 and an end portion of the slide member 90 on the outer cylinder 22 side are arranged between the pair of rail members 114. The wedge-shaped member 120 is made of steel, for example, and is fixed to the pedestal 112 by welding or the like.

As shown in FIGS. 7 and 8A, the wedge-shaped member 120 is arranged between the pedestal 112 and the slide member 90. The surface of the wedge-shaped member 120 on the inner cylinder 24 side is an inward guide slope G3.

The inward guide slope G3 faces the inner cylinder 24 and is a slope parallel to the outward slide slope S3 of the slide member 90. That is, the inward guide slope G3 faces the side opposite to the outward slide slope S3 in the radial direction of the outer cylinder 22, and in the cross section along the axial direction of the outer cylinder 22, with respect to the axial direction of the outer cylinder 22. The slope is inclined toward the inner cylinder 24 side from the center side of the screw member 72 toward one end portion 72E1 side. The outward slide slope S3 is slidably contacted with the inward guide slope G3.

The inward guide slopes G3 of the pair of outer rails 110 arranged on both sides of the screw member 72 have a cross section along the axial direction of the outer cylinder 22 with respect to the axial direction of the screw member 72 (outer cylinder 22). They are tilted in opposite directions.

The pair of rail members 114 have an outward guide slope G4 arranged on the inner cylinder 24 side of the pair of outer protrusions 94. The outward guide slope G4 faces the outer cylinder 22 side and is a slope parallel to the inward slide slope S4 of the outer protrusion 94. That is, the outward guide slope G4 faces the side opposite to the inward slide slope S4 in the radial direction of the outer cylinder 22, and one end portion from the center side of the screw member 72 in the cross section along the axial direction of the outer cylinder 22. The slope is inclined toward the inner cylinder 24 side toward the 72E1 side. The inwardly diametrical slope S4 is slidably contacted with the outwardly oriented guide slope G4.

The outward guide slopes G4 of the pair of outer rails 110 arranged on both sides of the screw member 72 have a cross section along the axial direction of the outer cylinder 22 with respect to the axial direction of the screw member 72 (outer cylinder 22). They are tilted in opposite directions. Further, the inward guide slope G3 and the outward guide slope G4 are examples of guide slopes.

A stopper member 130 that restricts the movement of the slide member 90 is attached to the end of the wedge-shaped member 120 by a bolt 132. The stopper members 130 are arranged outside the pair of slide members 90 in the axial direction of the outer cylinder 22. The end face 90E of the slide member 90 arranged at the initial position is engaged with each stopper member 130. These stopper members 130 limit the movement of the pair of slide members 90 in the direction away from each other.

(Bobbin scaling method)
Next, a method of scaling the bobbin 20 will be described.

6A and 8A show a pair of slide members 90 arranged in initial positions. In this state, the outer diameter D (see FIG. 3) of the outer cylinder 22 is set to a predetermined value (initial value), and the outer peripheral surface 22A of the outer cylinder 22 is circular (when viewed from the axial direction). It becomes a perfect circle). When the outer cylinder 22 is contracted from this state, the operator first loosens the fixing nut 86 of the screw member 72, and attaches a tool or the like to one end 72E1 or the other end 72E2 of the screw member 72.

Next, the operator rotates the screw member 72 in a predetermined direction and moves the pair of movable nuts 84 in directions approaching each other, that is, toward the center side of the screw member 72. As a result, as shown in FIGS. 6B and 8B, the pair of slide members 90 to which the pair of movable nuts 84 are fixed approach each other along the inner rail 100 and the outer rail 110 and move to the contracted position.

At this time, as shown in FIG. 8B, the outward slide surface S2 of the inner protrusion 92 of the slide member 90 slides on the inward guide surface G2 of the inner rail 100. Further, the inward slide slope S4 of the outer protrusion 94 of the slide member 90 slides on the outward guide slope G4 of the outer rail 110.

Here, the inward slide slope S4 and the outward guide slope G4 have a cross section along the axial direction of the outer cylinder 22 from the center side of the screw member 72 to the one end 72E1 side with respect to the axial direction of the outer cylinder 22. It is inclined toward the inner cylinder 24 side as it goes toward it. As a result, when the outer protrusion 94 of the slide member 90 moves toward the center of the screw member 72 along the axial direction of the outer cylinder 22, the outward guide slope G4 is moved to the inner cylinder 24 side (arrow R1) by the inward slide slope S4. Pressed to the side). As a result, the outer rail 110 and the divided body 40 provided with the outer rail 110 move to the center C side (arrow R1 side) of the outer cylinder 22.

When the split body 40 moves toward the center C side of the outer cylinder 22, as shown in FIG. 5B, the gaps H2 and H3 (see FIG. 5A) between the arcuate portions 42 of the adjacent split bodies 40 disappear or the gaps are eliminated. H2 and H3 become narrower.

According to the above procedure, the operator operates the plurality of feed screw mechanisms 70 to move the plurality of divided bodies 40 toward the center C side of the outer cylinder 22. As a result, the outer cylinder 22 contracts in the radial direction, and the outer diameter D (see FIG. 3) of the outer cylinder 22 becomes smaller.

On the other hand, when expanding the outer cylinder 22, the operator first rotates the screw member 72 in the direction opposite to the case where the outer cylinder 22 is contracted, and separates the pair of movable nuts 84 from each other, that is, the screw member 72. To the one end 72E1 side and the other end 72E2 side, respectively. As a result, as shown in FIGS. 6A and 8A, the pair of slide members 90 to which the pair of movable nuts 84 are fixed are separated from each other along the inner rail 100 and the outer rail 110 and move to the initial positions.

At this time, as shown in FIG. 8A, the inward slide surface S1 of the inner protrusion 92 of the slide member 90 slides on the outward guide surface G1 of the inner rail 100. Further, the outward slide slope S3 of the outer protrusion 94 of the slide member 90 slides on the inward guide slope G3 of the outer rail 110.

Here, the outward slide slope S3 and the inward guide slope G3 are directed from the center side of the screw member 72 to the one end 72E1 side with respect to the axial direction of the outer cylinder 22 in the cross section along the axial direction of the outer cylinder 22. Therefore, it is inclined toward the inner cylinder 24 side. As a result, when the outer protrusions 94 of the pair of slide members 90 move toward the one end 72E1 side of the screw member 72 along the axial direction of the outer cylinder 22, the inward guide slope G3 is moved to the outer cylinder by the outward slide slope S3. It is pressed toward the 22 side (arrow R2 side). As a result, the outer rail 110 and the divided body 40 provided with the outer rail 110 move to the outside of the outer cylinder 22.

When the divided body 40 moves to the outside of the outer cylinder 22, as shown in FIG. 5A, the gaps H2 and H3 of the arcuate portions 42 of the adjacent divided bodies 40 expand.

According to the above procedure, the operator operates the plurality of feed screw mechanisms 70 to move the plurality of divided bodies 40 to the outside of the outer cylinder 22. As a result, the outer cylinder 22 expands in the radial direction, and the outer diameter D (see FIG. 3) of the outer cylinder 22 increases. Then, the outer diameter D of the outer cylinder 22 is restored to the initial value.

The screw member 72 may be rotated by a rotating device instead of an operator.

(effect)
Next, the effect of this embodiment will be described.

As shown in FIG. 2, according to the present embodiment, for example, the winding object P in a high temperature state is wound in a cylindrical shape (coil shape) around the outer peripheral surface 22A of the outer cylinder 22 of the bobbin 20. In this state, the object P to be wound is cooled.

Here, when the winding object P is cooled, the cylindrical winding object P contracts toward the center C side. When the contraction of the winding object P toward the center C side is restrained by the outer cylinder 22, stress is generated in the winding object P, and the winding object P may be damaged due to cracking or the like. ..

On the other hand, the bobbin 20 according to the present embodiment has an outer cylinder 22 and an inner cylinder 24 arranged inside the outer cylinder 22, as shown in FIG. The outer cylinder 22 has a plurality of divided bodies 40 divided in the circumferential direction. Each split body 40 is connected to the inner cylinder 24 via a feed screw mechanism 70. The feed screw mechanism 70 makes it possible for the plurality of divided bodies 40 to move in the radial direction (arrow R direction) of the outer cylinder 22 with respect to the inner cylinder 24.

Here, in a state where the winding object in a high temperature state is cylindrically wound around the outer peripheral surface 22A of the outer cylinder 22, the plurality of divided bodies 40 are moved toward the center C side of the outer cylinder 22 by the plurality of feed screw mechanisms 70, respectively. When moved, the outer cylinder 22 contracts toward the center C side. As a result, a gap is created between the outer peripheral surface 22A of the outer cylinder 22 and the inner peripheral surface of the cylindrical winding object P.

As a result, when the temperature of the winding object P drops, the cylindrical winding object P can shrink toward the center C side. Therefore, the damage caused by the temperature drop of the winding object P wound around the outer cylinder 22 of the bobbin 20 is suppressed.

If the winding target object P contracts toward the center C side as the temperature drops before moving the plurality of divided bodies 40 to the center C side of the outer cylinder 22, the winding target object P is transferred to each divided body 40. The pressure acting may lock the feed screw mechanism 70 and prevent the feed screw mechanism 70 from operating. Therefore, from the viewpoint of preventing the feed screw mechanism 70 from being locked, more specifically, before the shrinkage of the winding object P starts, more specifically, after the winding of the winding object P by the bobbin 20 is completed, promptly. It is desirable to operate the feed screw mechanism 70 to move the plurality of divided bodies 40 toward the center C side of the outer cylinder 22.

Further, the screw member 72 of the feed screw mechanism 70 moves the divided body 40 in the radial direction of the outer cylinder 22 as it rotates. As a result, the amount of movement of the divided body 40 can be easily adjusted by the amount of rotation of the screw member 72. Therefore, for example, when the plurality of divided bodies 40 are moved in the radial direction of the outer cylinder 22 by the plurality of screw members 72, the step between the outer surfaces 42A of the adjacent divided bodies 40 is eliminated or the step is reduced. be able to.

Further, the rotation of the screw member 72 can be easily restrained by a detent member such as a fixing nut 86. Then, by winding the winding object P around the outer peripheral surface 22A of the outer cylinder 22 while restraining the rotation of the screw member 72, it is possible to prevent the plurality of divided bodies 40 from moving toward the center C side of the outer cylinder 22. Will be done. Therefore, it is possible to suppress unwinding and breakage of the object P to be wound.

Further, the screw member 72 is arranged along the axial direction of the outer cylinder 22. As a result, one end 72E1 or the other end 72E2 of the screw member 72 can be operated from the axial direction of the outer cylinder 22 by a tool or the like. Therefore, even when the winding object P is wound around the outer peripheral surface 22A of the outer cylinder 22, the screw member 72 is rotated by a tool or the like, and the plurality of divided bodies 40 are moved to the center C side of the outer cylinder 22. Can be made to.

Further, the feed screw mechanism 70 has a slide member 90 that connects the inner cylinder 24 and the split body 40. The slide member 90 moves in the axial direction of the outer cylinder 22 with the rotation of the screw member 72, and moves the divided body 40 in the radial direction of the outer cylinder 22 with respect to the inner cylinder 24. That is, the slide member 90 converts the rotational motion of the screw member 72 into a linear motion of the split body 40 along the radial direction of the outer cylinder 22. As a result, the divided body can be moved in the radial direction of the outer cylinder 22 by the screw member 72 arranged along the axial direction of the outer cylinder 22.

Further, the feed screw mechanism 70 has a pair of slide members 90 arranged in the axial direction of the outer cylinder 22. The pair of slide members 90 has a pair of inward slide slopes S4. The pair of inward slide slopes S4 are in contact with the pair of outward guide slopes G4 of the outer rail 110, respectively.

Here, the pair of inward slide slopes S4 are inclined in opposite directions in the cross section of the outer cylinder 22 along the axial direction. Similarly, the pair of outward guide slopes G4 are inclined in opposite directions in the cross section of the outer cylinder 22 along the axial direction. As a result, when the pair of slide members 90 move in the direction of approaching each other as the screw member 72 rotates, the outer rail 110 moves to the inner cylinder 24 side (arrow R1 side). Therefore, the outer cylinder 22 can be contracted.

Further, the pair of outward slide slopes S3 are inclined in opposite directions in the cross section of the outer cylinder 22 along the axial direction. Similarly, the pair of inward guide slopes G3 are inclined in opposite directions in the cross section of the outer cylinder 22 along the axial direction. As a result, when the pair of slide members 90 move in the direction away from each other as the screw member 72 rotates, the outer rail 110 moves toward the outer cylinder 22 side. Therefore, the outer cylinder 22 can be enlarged.

Further, when the pair of inward slide slopes S4 are in contact with the pair of outward guide slopes G4, the inner cylinder 24 and the outer cylinder 22 are prevented from being displaced in the axial direction. Similarly, when the pair of outward slide slopes S3 are in contact with the pair of inward guide slopes G3, the inner cylinder 24 and the outer cylinder 22 are prevented from being displaced in the axial direction. As a result, the position of the center of gravity of the bobbin 20 is suppressed from moving as the outer cylinder 22 contracts or expands. Therefore, the bobbin 20 is stable.

As described above, the outer cylinder 22 of the bobbin 20 is contracted in a state in which the winding object P is wound. After that, the bobbin 20 is attached to a drawer device (not shown). Then, by rotating the bobbin 20 by the drawing device, the winding object P is pulled out from the bobbin 20. At this time, the bobbin 20 is rotated about, for example, the rotation axis of the drawer device inserted into the inner cylinder 24.

Further, the screw member 72 has a first screw portion N1 and a second screw portion N2. The first screw portion N1 is connected to one of the slide members 90 via a movable nut 84. On the other hand, the second screw portion N2 has a reverse screw with the first screw portion N1 and is connected to the other slide member 90 via the movable nut 84. As a result, the pair of slide members 90 can be simultaneously moved in opposite directions as the screw member 72 rotates.

Further, as shown in FIG. 5A, a pair of inclined portions 52K and 62K that are inclined to one side with respect to the axial direction of the outer cylinder 22 are provided on both sides of the adjacent arcuate portions 42X and 42Y. ing. The pair of inclined portions 52K and 62K are arranged in the contact region 22Z where the outer roll 36 and the inner roll 38 of the rotating device 30 are pressure-contacted.

Here, in the contact region 22Z, when the ends of the adjacent arcuate portions 42X and 42Y are parallel to the axial direction of the outer cylinder 22, the outer roll 36 and the inner roll 38 are adjacent to the arcuate portions 42X and 42Y. When passing through the end portion, the pressure contact force (rotational force) acting on the arcuate portions 42X and 42Y from the outer roll 36 and the inner roll 38 may temporarily decrease. Further, in the contact region 22Z, when the ends of the adjacent arcuate portions 42X and 42Y are parallel to the axial direction of the outer cylinder 22, for example, when there is a step between the ends of the adjacent arcuate portions 42, The outer roll 36 and the inner roll 38 get over the step at once. Therefore, the vibration of the outer cylinder 22 may increase.

On the other hand, in the present embodiment, as described above, a pair of inclined portions 52K and 62K are arranged in the contact region 22Z. The pair of inclined portions 52K and 62K are inclined to one side with respect to the axial direction of the outer cylinder 22 in the contact region 22Z. As a result, when the outer roll 36 and the inner roll 38 pass through the ends of the adjacent arcuate portions 42X and 42Y, the pressure contact force acting on the arcuate portions 42X and 42Y from the outer roll 36 and the inner roll 38 is reduced. It is suppressed.

Further, when there is a step between the pair of inclined portions 52K and 62K, the outer roll 36 and the inner roll 38 gradually get over the step from one end side. Therefore, since the vibration of the outer cylinder 22 is reduced, damage to the outer cylinder 22 is suppressed.

(Modification example)
Next, a modified example of the above embodiment will be described.

In the above embodiment, in the cross section of the outer cylinder 22 along the axial direction, the outward slide slope S3 and the inward slide slope S4 are on the one end 72E1 side from the center side of the screw member 72 with respect to the axial direction of the outer cylinder 22. It is inclined toward the inner cylinder 24 side (arrow R1 side) toward the direction. Further, in the cross section along the axial direction of the outer cylinder 22, the inward guide slope G3 and the outward guide slope G4 move from the central side of the screw member 72 toward the one end 72E1 side with respect to the axial direction of the outer cylinder 22. It is inclined toward the inner cylinder 24 side (arrow R1 side).

However, the outward slide slope and the inward slide slope are the outer cylinders in the cross section along the axial direction of the outer cylinder 22 from the central side of the screw member 72 toward the one end 72E1 side with respect to the axial direction of the outer cylinder 22. It may be inclined to the 22 side (arrow R2 side). Similarly, the inward guide slope G3 and the outward guide slope G4 have a cross section along the axial direction of the outer cylinder 22 from the center side of the screw member 72 to the one end 72E1 side with respect to the axial direction of the outer cylinder 22. It may be inclined toward the outer cylinder 22 side (arrow R2 side) toward the direction. In this case, when the pair of slide members move in the direction of approaching each other, the divided body 40 moves to the outside of the outer cylinder 22. Further, when the pair of slide members move in the direction away from each other, the divided body 40 moves toward the center C side of the outer cylinder 22.

Further, in the above embodiment, a slide slope (outward slide slope S3, inward slide slope S4) and a guide slope (inward guide slope G3, outward guide slope S4) are connected to the connecting portion between the slide member 90 and the outer rail 110. G4) is provided. However, the slide slope and the guide slope may be provided at the connecting portion between the slide member 90 and the inner rail 100.

Further, in the above embodiment, the pair of slide members 90 are connected to the screw member 72 via the movable nut 84. However, for example, the movable nut 84 may be omitted, and the first screw portion N1 of the screw member 72 may be connected to the female screw formed in the through hole 91 of one of the slide members 90. As a result, the slide member 90 can move along the screw member 72 as in the above embodiment.

Further, in the above embodiment, the feed screw mechanism 70 is provided with a pair of slide members 90. However, one of the pair of slide members 90, the slide member 90, may be omitted. In this case, the bobbin is provided with, for example, a limiting member that limits the axial deviation between the divided body 40 and the inner cylinder 24.

Further, in the above embodiment, the outer cylinder 22 is divided into four divided bodies 40. However, the outer cylinder 22 can be divided into two or more divided bodies, more preferably three or more divided bodies.

Further, in the above embodiment, the feed screw mechanism 70 is provided on each of the plurality of divided bodies 40. However, the feed screw mechanism 70 can be provided in at least one of the plurality of divided bodies 40.

Further, in the above embodiment, the core body is a cylindrical inner cylinder 24. However, the shape of the core body is not limited to a cylindrical shape, and may be, for example, a prismatic shape.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. Of course, it can be carried out in various modes as long as it does not deviate.

10 Winding device 20 Bobbin 22 Outer cylinder (cylindrical body)
22A outer peripheral surface (outer peripheral surface of tubular body)
24 Inner cylinder (core body)
30 Rotating device 36 External roll 38 Internal roll 40 Divided body 42 Arc-shaped part 42X Arc-shaped part 42Y Arc-shaped part 52K Inclined part 62K Inclined part 70 Feed screw mechanism 72 Screw member 90 Sliding member (movable member)
S3 outward slide slope (slide slope)
S4 Inward slide slope (slide slope)
G3 Inward guide slope (guide slope)
G4 outward guide slope (guide slope)
N1 1st screw part N2 2nd screw part P Winding object R Radial direction of outer cylinder (diameter direction of tubular body)
R1 outer cylinder center side (center side of tubular body)

Claims (6)

A bobbin that is mounted on a rotating device equipped with an internal roll and an external roll to wind up an object to be wound.
A tubular body having a plurality of divided bodies divided in the circumferential direction, which is rotated by the inner roll arranged inside and the outer roll arranged outside, and the winding object is wound around the outer peripheral surface. ,
A core body arranged inside the tubular body and
A movable member that connects the core body and the divided body is arranged along the axial direction of the tubular body, and the movable member is moved in the axial direction of the tubular body with rotation to form the core body. A feed screw mechanism having a screw member for moving the divided body in the radial direction of the tubular body, and
A bobbin with. The feed screw mechanism has a pair of movable members arranged in the axial direction of the tubular body.
The pair of movable members have a pair of slide slopes that incline in opposite directions to the axial direction of the tubular body in a cross section along the axial direction of the tubular body.
The split body or the core body has a pair of guide slopes to which the pair of slide slopes are in contact with each other.
The screw member moves the pair of movable members in opposite directions in the axial direction of the tubular body, and slides the pair of slide slopes along the pair of guide slopes.
The bobbin according to claim 1. The movable member has two slide slopes that face opposite sides in the radial direction of the tubular body.
The split body or the core body faces opposite sides in the radial direction of the tubular body and has two guide slopes in which the two slide slopes are in contact with each other.
The bobbin according to claim 2. The screw member is
A first screw portion connected to one of the movable members of the pair of movable members,
A second screw portion which is a reverse screw to the first screw portion and is connected to the other movable member of the pair of the movable members.
Have,
The bobbin according to any one of claims 1 to 3. The plurality of divided bodies are arranged on the circumference of the tubular body, and each has an arcuate portion to which the internal roll is pressure-welded from the inside.
At the ends of the adjacent arcuate portions, a pair of inclined portions that face each other and are inclined to one side with respect to the axial direction of the tubular body are provided.
The bobbin according to any one of claims 1 to 4. Rotating devices with internal and external rolls,
The bobbin according to any one of claims 1 to 5, which is attached to the rotating device and winds up the object to be wound.
Winding device equipped with.