JP7844155B2 - guide - Google Patents

Description

This invention relates to a guide attached to a segment that contacts the inner circumferential surface of a coil in a central cavity formed by winding a web, and which guides the edge of the web as it unwinds from the coil.

Conventional press working lines consist of an uncoiler, a leveler, and a press. The uncoiler unwinds a coil of steel webs and feeds them out. The leveler straightens the webs supplied by the uncoiler. The leveler has a leveler feeder that intermittently feeds and straightens the webs. The press presses the webs supplied by the leveler.

In the uncoiler described in Patent Document 1, a drum, also called a mandrel, is mounted in the central cavity of the coil. The drum has a rotating shaft, multiple link mechanisms, and multiple segments. The multiple segments are arranged at regular intervals circumferentially on the radially outer side of the rotating shaft. Each segment is connected to the rotating shaft via a link mechanism. The link mechanisms adjust the radial position of the segments. When the drum expands due to the adjustment of the segment positions radially outward, the segments are pressed against the inner surface of the coil, thereby holding the coil in place. When the drum contracts due to the adjustment of the segment positions radially inward, the segments separate from the inner surface of the coil, allowing the coil to be removed from the drum.

Each segment is detachably supported by two fork guides spaced apart in the axial direction of the rotation axis. These fork guides are mounted on the outer surface of the segment and radiate outward from the segment. The end faces of the coils contact the fork guides, preventing them from unraveling axially. Furthermore, the edges of the webs contact the fork guides, preventing misalignment in the width direction of the webs and ensuring the webs are centered.

Japanese Patent Application Publication No. 8-71649

Incidentally, in the technology described in Patent Document 1, the fork guide is made of a processed metal square bar, so a gap is created between the outer surface of the segment and the area enclosed by the fork guide. Therefore, the edge of the innermost web of the coil can get caught in the gap between the outer surface of the segment and the fork guide, which can cause problems. This problem occurs when the web does not separate from the segment in the final stage of web unwinding, causing the web to be wound in the reverse direction.

Therefore, the present invention has been made in view of the above circumstances, and aims to prevent the web from getting stuck between the segment and the guide.

The main invention for solving the above problems is a guide attached to a segment that contacts the inner circumferential surface of a coil in the central cavity of a coil around which a web is wound. The guide comprises: a guide member provided in a flat plate shape with thickness in the axial direction, erected on the outer surface of the segment on the radially outer side, extending radially outward from the segment, and contacting the end face of the coil in the axial direction; and a locking mechanism provided on the guide member that locks the guide member to the segment in a state where the bottom edge of the guide member is in surface contact with the outer surface of the segment, and which can release this lock.

According to the present invention, the locking mechanism locks the guide member to the segment in a state where the bottom edge of the guide member is in surface contact with the outer surface of the segment, preventing the web from getting caught between the segment and the guide. Therefore, in the final stage of web unwinding, the web is reliably separated from the segment, preventing the web from being wound in the reverse direction.

This is a front view of the ancoira according to the first embodiment. This is a diagram showing the segment and guide of the first embodiment viewed from the circumferential direction. This is a front view of the guide according to the first embodiment. This is a front view of the guide according to the first embodiment. This is a rear view of the guide according to the first embodiment. This is a right side view of the guide according to the first embodiment. This is a front view showing the guide of the first embodiment being attached to the segment. This is a front view showing the guide of the first embodiment being attached to the segment. This is a front view showing the guide of the first embodiment being attached to the segment. This is a front view of the guide according to the second embodiment. This is a front view of the guide according to the second embodiment. This is a rear view of the guide according to the second embodiment. This is a right side view of the guide according to the second embodiment.

The embodiments of the present invention will be described below with reference to the drawings. However, while the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.

[First Embodiment]
1. Reel device Figure 1 is a front view of the reel device 1.
The reel device 1 is a device that unwinds a web 98 from a coil 99, which is made of, for example, steel, aluminum, or copper, or winds a web 98 onto the coil 99. The reel device 1 is sometimes referred to as an uncoil or coil.

The reel device 1 comprises a frame 10, a drive unit 20, a mandrel 30, and three pairs of guides 140.

The frame 10 is installed on a surface such as the floor.
The drive unit 20 is located within the frame 10. The drive unit 20 includes a motor and a transmission mechanism that transmits the motor's power to the mandrel 30. The motor is a motor with a brake.

The mandrel 30 is rotatably mounted to the frame 10 at its base, with its central axis extending horizontally. The central axis of the mandrel 30 is perpendicular to the plane of the paper in Figure 1. Hereafter, the direction parallel to the central axis of the mandrel 30 will be referred to as the axial direction, the direction perpendicular to the central axis of the mandrel 30 will be referred to as the radial direction, and the direction around the central axis of the mandrel 30 will be referred to as the circumferential direction.

The mandrel 30 is configured to be able to expand and contract in diameter. When the mandrel 30 is inserted into the central cavity 99a of the coil 99, the coil 99 is fixed to the mandrel 30 by expanding its diameter. When the mandrel 30 contracts its diameter, the coil 99 becomes removable from the mandrel 30. When the coil 99 is mounted on the mandrel 30, the width directions of the web 98 and the coil 99 are parallel to the central axis of the mandrel 30.

The mandrel 30 is connected to the drive unit 20 within the frame 10. The mandrel 30 is rotationally driven by the drive unit 20, thereby unwinding the web 98 from or winding it onto the coil 99.

I will now explain Mandrel 30 in detail.
The mandrel 30 has a main shaft 31, three segments 32, and three parallel link mechanisms 33.

The main spindle 31 is rotatably mounted to the frame 10 via bearings or the like at its base. The main spindle 31 extends horizontally from the top of the frame 10. The base of the main spindle 31 is connected to the drive unit 20, and the main spindle 31 is rotationally driven by the drive unit 20. The main spindle 31 is inserted into the central cavity 99a of the coil 99.

The three segments 32 are arranged at 120° intervals in the circumferential direction around the main shaft 31. Each segment 32 is an axially elongated plate-like member. The outer surface 32a of each segment 32 on its radially outer side is formed into a convex arc-shaped prism centered on the central axis of the main shaft 31. Each segment 32 is connected to the outer circumference of the main shaft 31 via a parallel link mechanism 33. The parallel link mechanism 33 operates under the power of an actuator such as a hydraulic cylinder. The parallel link mechanism 33 adjusts the radial position of each segment 32 while maintaining its orientation. When the position of a segment 32 is adjusted radially outward by the parallel link mechanism 33, the mandrel 30 expands in diameter. When the position of a segment 32 is adjusted radially inward by the parallel link mechanism 33, the mandrel 30 contracts in diameter.

When the mandrel 30 is expanded in diameter and the coil 99 is fixed to the mandrel 30, the outer surface 32a of the segment 32 is in contact with the inner circumferential surface of the coil 99 in the central cavity 99a of the coil 99.

2. Guides As shown in Figure 2, two guides 140 are attached to each segment 32 at axial intervals. The guide 140 proximal to the tip of the mandrel 30 and the guide 140 distal to the tip of the mandrel 30 are attached to the segment 32 in opposite directions in the axial direction. Here, Figure 2 is a view of the segment 32 and the guides 140 from the circumferential direction.

The guides 140 attached to the segment 32 of the mandrel 30 are positioned radially outward from the segment 32. The coil 99 mounted on the mandrel 30 is sandwiched between three guides 140 proximal to the tip of the mandrel 30 and three guides 140 distal to the tip of the mandrel 30. Both end faces of the coil 99 are supported by the guides 140 in the axial direction, preventing the web 98 from unraveling axially from the coil 99. Furthermore, the edges of the web 98 unwound from the coil 99 are guided by the guides 140, preventing misalignment of the web 98 in the width direction.

The guide 140 will be described in detail with reference to Figures 3 to 6. Figures 3 and 4 are front views of the guide 140. Figure 5 is a rear view of the guide 140. Figure 6 is a right side view of the guide 140. Figure 3 shows the guide 140 unlocked from the segment 32, while Figures 4, 5, and 6 show the guide 140 locked to the segment 32. Figures 3 to 6 include arrows indicating the front-to-back, up-and-down, and left-to-right directions as auxiliary lines. The up-and-down direction is not necessarily vertical. When the guide 140 is mounted on the segment 32, the front-to-back direction is parallel to the axial direction, and the up-and-down direction is parallel to the radial direction.

The guide 140 comprises a guide member 141, a support member 142, and a locking mechanism 150.

The guide member 141 is made of a symmetrical steel plate with thickness in the front-to-back direction (axial direction). The thickness direction of the guide member 141 is in the front-to-back direction. The base 141h of the guide member 141 is formed in a concave arc shape. When the guide 140 is attached to the segment 32, the end face of the coil 99 makes surface contact with the flat guide member 141.

The support member 142 is made of a symmetrical steel plate with thickness in the front-to-back direction (axial direction). The support member 142 faces the guide member 141 in the front-to-back direction, and the support member 142 and guide member 141 are parallel to each other. The support member 142 is fixed to the guide member 141 by bolts, and a cylindrical spacer, externally mounted on the bolts, is sandwiched between the support member 142 and the guide member 141, thereby maintaining the distance between them.

The base 142h of the support member 142 is formed in a concave arc shape. The curvature of the base 142h of the support member 142 is equal to the curvature of the base 141h of the guide member 141, and when viewed projected in the front-to-back direction, the base 142h of the support member 142 overlaps the base 141h of the guide member 141 in the front-to-back direction.

When the guide 140 is attached to the segment 32, the bottom edges 141h and 142h of the guide member 141 and support member 142 are in surface contact with the outer surface 32a of the segment 32. In this state, the guide member 141 and support member 142 are positioned upright on the outer surface 32a of the segment 32, extending radially outward from the segment 32.

The manual locking mechanism 150 is provided between the guide member 141 and the support member 142. The locking mechanism 150 locks the guide member 141 and the support member 142 to the segment 32, with their bases 141h and 142h in surface contact with the outer surface 32a of the segment 32, thereby maintaining the upright position of the guide member 141 and the support member 142 against the outer surface 32a of the segment 32. The locking mechanism 150 allows for the release of the lock on the guide member 141 and the support member 142 to the segment 32.

The locking mechanism 150 includes a hook member 151, two springs 152, two cam holders 155, an eccentric cam 156, and a lever handle 157.

The hook member 151 is made of a roughly curved steel plate with thickness in the front-rear direction. The hook member 151 has a concave arc-shaped base 151h. The hook member 151 is positioned between the guide member 141 and the support member 142, with its base 151h aligned with the bases of the guide member 141 and the support member 142. Parts of the left and right sides of the hook member 151 protrude laterally through the gap between the guide member 141 and the support member 142.

The hook member 151 has hooks 151a and 151b at both the left and right ends of its base 151h. These hooks 151a and 151b are provided in a hook shape, protruding from both the left and right ends of the base 151h of the hook member 151 and bent to face each other. The pocket 151d enclosed by the right hook 151b and the base 151h of the hook member 151 is deeper than the pocket 151c enclosed by the left hook 151a and the base 151h of the hook member 151. The space between the tips of the hooks 151a and 151b is the insertion portion 151e through which the segment 32 is inserted. After one end 32c of the segment 32 in the circumferential direction is inserted into the pocket 151d through the insertion portion 151e, the other end 32b of the segment 32 in the circumferential direction is inserted into the pocket 151c through the insertion portion 151e. As a result, both ends 32b and 32c of segment 32 hook onto hooks 151a and 151b, respectively.

The hook member 151 has two slots 151f formed in it. These slots 151f extend in the vertical direction (i.e., radial direction). A pin 141p is inserted into the slots 151f. The pin 141p is fixed to the guide member 141 and the support member 142. As the pin 141p is guided vertically by the slots 151f, the hook member 151 is guided vertically relative to the guide member 141 and the support member 142. With both ends 32b and 32c of the segment 32 hooked onto the hooks 151a and 151b respectively, when the hook member 151 moves upward relative to the guide member 141 and the support member 142 (i.e., radially outward), the outer surface 32a of the segment 32 comes into contact with the bottom edges 141h and 142h of the guide member 141 and the support member 142. As a result, the end portion 32b of segment 32 is held in place by being sandwiched between the bases 141h and 142h of the guide member 141 and the support member 142 and the hook 151a, and the end portion 32c of segment 32 is held in place by being sandwiched between the bases 141h and 142h of the guide member 141 and the support member 142 and the hook 151b. When the hook member 151 moves downward relative to the guide member 141 and the support member 142 (i.e., radially inward), the sandwiching of both ends 32b and 32c of segment 32 is released.

The central portion of the hook member 151 in the left-right direction is sandwiched in the front-rear direction between two oval-shaped springs 152, and is rotatably connected to the springs 152 by a pin 151p. The hook member 151 is pivotable around the pin 151p relative to the springs 152.

The spring 152 is positioned between the guide member 141 and the support member 142, on the upper side (radially outward) of the hook member 151. The base end of the spring 152 is fixed to the cam holder 155 as a fixed end. The spring 152 is provided in an oval shape, bent from its base end to its tip. Specifically, the spring 152 has a straight section 152a extending linearly to the right from the right side of the cam holder 155, a curved section 152b that curves and folds back from the right end of the straight section 152a toward the hook member 151, a straight section 152c extending linearly to the left from the lower end of the curved section 152b, a curved section 152d that curves and folds back from the left end of the straight section 152c toward away from the hook member 151, and a straight section 152e extending linearly to the right from the upper end of the curved section 152d. The tip of spring 152, that is, the right end of the straight section 152e, is detached from the cam holder 155 as a free end. The left end of the straight section 152a is the base end of spring 152. Furthermore, the point where spring 152 is connected to the hook member 151 by pin 151p is the midpoint of the straight section 152c.

Because the spring 152 is elastically deformable, relative planar movement of the hook member 151 with respect to the cam holder 155 is permitted. Here, the planar direction is the direction perpendicular to the thickness direction of the hook member 151.

The two cam holders 155 are spaced apart from each other in the front-to-back direction, above (radially outward from) the pin 151p. The cam holders 155 are positioned above (radially outward from) the spring 152, between the guide member 141 and the support member 142. The cam holders 155 are integrally formed with the spring 152.

A circular hole is formed in the cam holder 155. A cylindrical eccentric cam 156 is coaxially fitted into the circular holes of the front and rear cam holders 155, with the cam surface on the outer circumference of the eccentric cam 156 in contact with the inner circumference of the circular hole. The eccentric cam 156 is rotatable relative to the cam holder 155, around the central axis of the eccentric cam 156 and the circular hole. The eccentric cam 156 is connected to the guide member 141 and the support member 142 by an eccentric shaft 156a, which is eccentric with respect to the central axis of the eccentric cam 156 and the circular hole. The central axes of the circular hole, the eccentric cam 156, and the eccentric shaft 156a are parallel to the front-rear direction. When the guide 140 is attached to the segment 32, the central axis of the eccentric shaft 156a and the central axes of the circular holes in the eccentric cam 156 and cam holder 155 are parallel to the central axis of the main shaft 31.

The eccentric cam 156 is capable of swinging vertically around the eccentric axis 156a relative to the guide member 141 and the support member 142. By swinging around the eccentric axis 156a, the eccentric cam 156 moves the cam holder 155, spring 152, and hook member 151 vertically (radially).

The lever handle 157 is connected to the outer circumference of the eccentric cam 156 in the gap between the front and rear cam holders 155. The lever handle 157 protrudes upward from the gap between the guide member 141 and the support member 142. The lever handle 157 is pivotable around the eccentric shaft 156a, with the eccentric shaft 156a as the pivot point.

The range of motion of the lever handle 157 is set by stoppers 157a and 157b. Stopper 157a is fixed to the guide member 141 and support member 142 at the upper left of the eccentric shaft 156a. Stopper 157b is fixed to the guide member 141 and support member 142 at the upper right of the eccentric shaft 156a. When the lever handle 157 tilts to the left as shown in Figure 3 and hits stopper 157a, the counterclockwise rotation of the lever handle 157 is restricted. When the lever handle 157 tilts to the right as shown in Figure 4 and hits stopper 157b, the clockwise rotation of the lever handle 157 is restricted.

When the lever handle 157 is in contact with the stopper 157a, the apex of the cam surface of the eccentric cam 156 (the point furthest from the central axis of the eccentric shaft 156a) is located below the top dead center, which is the point furthest above the central axis of the pin 151p. Therefore, the hook member 151 is in the lowest position within its vertical range of motion.

When the lever handle 157 is in contact with the stopper 157b, the apex of the cam surface of the eccentric cam 156 is at its top dead center, furthest above the central axis of the pin 151p. Therefore, the hook member 151 is in the highest position within its vertical range of motion. In this state, the segment 32, which is hooked onto the hooks 151a and 151b of the hook member 151, contacts the bottom edges 141h and 142h of the guide member 141 and support member 142, and the segment 32 is restrained. Also, because the apex of the cam surface of the eccentric cam 156 is at its top dead center, the segment 32 is locked in contact with the bottom edges 141h and 142h of the guide member 141 and support member 142. Furthermore, the spring 152 undergoes elastic deformation, and the elastic force of the spring 152 acts on the hook member 151, generating a fastening force that presses the hooks 151a and 151b against the bottom edges 141h and 142h of the guide member 141 and support member 142.

3. Method of attaching the guide The method of attaching the guide 140 to the segment 32 will be explained below.
First, as shown in Figure 7, the lever handle 157 is tilted to the left, and the lever handle 157 is brought into contact with the stopper 157a. This causes the hook member 151 to move downward relative to the guide member 141 and the support member 142, and the hooks 151a and 151b move downward away from the bottom edges 141h and 142h of the guide member 141 and the support member 142.

The guide 140 is positioned radially outward from the segment 32, and the hooks 151a and 151b are positioned near both ends 32b and 32c of the segment 32. Furthermore, the guide member 141 and the support member 142 are positioned radially outward from the segment 32.

Next, as shown in Figure 8, the guide 140 is shifted to the right and tilted to the right. This places the end 32c of the segment 32 between the hooks 151a and 151b, bringing the end 32c of the segment 32 closer to the bottom edges 141h and 142h of the guide member 141 and the support member 142. From this state, as shown in Figure 9, the guide 140 is shifted to the left and tilted to the left. This inserts the end 32c of the segment 32 into the right pocket 151d and hooks the end 32c of the segment 32 onto the right hook 151b. Also, the bottom edges 141h and 142h of the guide member 141 and the support member 142 are brought into surface contact with the outer surface 32a of the segment 32. Next, as shown in Figure 3, the guide 140 is shifted to the right and tilted to the right, so that the bases 141h and 142h of the guide member 141 and support member 142 are positioned radially outward from the segment 32. This allows the end 32b of the segment 32 to be inserted into the left pocket 151c and hooked onto the left hook 151a. Note that in Figure 3, the bases 141h and 142h of the guide member 141 and support member 142 are separated from the outer surface 32a of the segment 32, but they may be in contact.

Next, as shown in Figure 4, the lever handle 157 is tilted to the right, bringing it into contact with the stopper 157b. This causes the hook member 151 to move upward (radially outward) relative to the guide member 141 and the support member 142, and the hooks 151a and 151b approach the bottom edges 141h and 142h of the guide member 141 and the support member 142. As a result, the segment 32 is sandwiched between the hooks 151a and 151b of the hook member 151 and the bottom edges 141h and 142h of the guide member 141 and the support member 142, thereby restraining the segment 32. Furthermore, since the apex of the cam surface of the eccentric cam 156 is located at the top dead center, the eccentric cam 156 does not rotate even if a radially inward load acts from the segment 32 to the hook member 151. Therefore, the segment 32 is locked to the guide member 141 and the support member 142 when its outer surface 32a contacts the bottom edges 141h and 142h of the guide member 141 and the support member 142.

4. How to remove the guide The method for removing the guide 140 from the segment 32 will be explained below.
First, as shown in Figure 3, the lever handle 157 is tilted to the left, and the lever handle 157 is brought into contact with the stopper 157a. This causes the hook member 151 to move downward (radially inward) relative to the guide member 141 and the support member 142, and the hooks 151a and 151b move downward away from the bottom edges 141h and 142h of the guide member 141 and the support member 142. As a result, the pinching of the segment 32 is relieved, and the segment 32 is released from the hooks 151a and 151b.

Next, as shown in Figure 9, slide the guide 140 to the left, inserting the end 32c of segment 32 into the back of the right pocket 151d, and simultaneously removing the end 32b of segment 32 from the left pocket 151c, thus detaching the end 32b of segment 32 from the left hook 151a. Then, as shown in Figure 8, remove the end 32c of segment 32 from the right pocket 151d while separating the guide member 141 and the support member 142 from segment 32. Finally, as shown in Figure 7, remove the end 32c of segment 32 from between hooks 151a and 151b.

5. Advantageous Effects (1) The guide member 141 and the support member 142 are mounted facing each other in the axial direction, and the guide member 141 and the support member 142 support each other, so that the guide member 141, which is erected on the outer surface 32a of the segment 32, does not tilt in the axial direction with respect to the radial direction. Therefore, the coil 99 does not unravel in the axial direction, the position of the web 98 in the width direction is prevented, and the web 98 is centered.

(2) The end face of the coil 99 makes surface contact with the flat guide member 141, and the edge of the web 98 makes contact with the guide member 141 along the longitudinal direction of the web 98. In other words, since the edge of the web 98 does not make local contact with the guide member 141, deformation and damage to the edge of the web 98 can be prevented, and the generation of shavings and metal powder can also be prevented.

(3) The guide 140 is supported by the segment 32 at four points. The first point is where the base 141h of the guide member 141 contacts the outer surface 32a of the segment 32. The second point is where the base 142h of the support member 142 contacts the outer surface 32a of the segment 32. The third and fourth points are where the left and right hooks 151a and 151b contact the opposite surfaces of the outer surface 32a of the segment 32. Therefore, the guide 140 is firmly fixed to the segment 32, and the guide member 141 is prevented from tilting axially with respect to the radial direction. Thus, the coil 99 does not unravel axially, the widthwise displacement of the web 98 is prevented, and the web 98 is centered.

(4) Since the base 141h of the guide member 141 makes surface contact with the outer surface 32a of the segment 32, the accuracy and effectiveness of the self-supporting of the guide member 141 are high. Since the base 142h of the support member 142 makes surface contact with the outer surface 32a of the segment 32, the accuracy and effectiveness of the self-supporting of the support member 142 are high. Therefore, the guide member 141 can be prevented from tilting axially with respect to the radial direction, and the coil 99 does not unravel axially.

(5) A hook member 151 is employed separately from the guide member 141 and the support member 142. The hook member 151 moves relative to the guide member 141 and the support member 142, thereby locking and unlocking the guide 140 to the segment 32. In other words, locking and unlocking the guide 140 to the segment 32 is achieved without utilizing the deformation of the guide member 141 and the support member 142. Therefore, the entire bases 141h and 142h of the guide member 141 and the support member 142 can be brought into contact with the outer surface 32a of the segment 32. Thus, the accuracy and effectiveness of the self-supporting capabilities of the guide member 141 and the support member 142 are high.

(6) As the hook member 151 moves radially outward, the guide member 141 does not deform, and the guide member 241 and the segment 32 move closer to each other, thereby achieving surface contact between the base edge 141h of the guide member 141 and the outer surface 32a of the segment 32. Because the base edge 141h of the guide member 141 makes surface contact with the outer surface 32a of the segment 32, there is no gap between the base edge 141h of the guide member 141 and the outer surface 32a of the segment 32. Therefore, the edge of the web 98 does not get caught between the guide member 141 and the segment 32. Thus, in the final stage of web 98 unwinding, the web 98 separates from the segment 32, preventing the web 98 from being wound in the reverse direction.

(7) When the segment 32, which is hooked onto the hooks 151a and 151b of the hook member 151, is in contact with the bottom edges 141h and 142h of the guide member 141 and support member 142, the apex of the cam surface of the eccentric cam 156 is at top dead center. Therefore, no rotational force is generated in the eccentric cam 156, and the segment 32 is locked in contact with the bottom edges 141h and 142h of the guide member 141 and support member 142.

[Second Embodiment]
1. Guide The guide 240 of the second embodiment will be described in detail with reference to Figures 10 to 13. Figures 10 and 11 are front views of the guide 240. Figure 12 is a rear view of the guide 240. Figure 13 is a right side view of the guide 240. Figure 10 shows the guide 240 unlocked from the segment 32, and Figures 11, 12 and 13 show the guide 240 locked to the segment 32. Figures 10 to 13 are marked with arrows indicating the front-rear, up-down, and left-right directions as auxiliary lines to represent direction. When the guide 240 is mounted on the segment 32, the front-rear direction is parallel to the axial direction, and the up-down direction is parallel to the radial direction.

In the second embodiment, the guide 240 is attached to the segment 32 in place of the guide 140 in the first embodiment.

The guide 240 comprises a guide member 241, a support member 242, and a locking mechanism 250.

The guide member 241 consists of a symmetrical steel plate with thickness in the front-rear direction (axial direction). When the guide 240 is attached to the segment 32, the end face of the coil 99 makes surface contact with the flat guide member 241.

The base 241h of the guide member 241 is formed in a concave arc shape. The guide member 241 has guide portions 241a at both the left and right ends of its base 241h. The guide portions 241a guide the segment 32 that enters between them to the base 241h of the guide member 241.

The support member 242 is made of a symmetrical steel plate with thickness in the front-rear direction (axial direction). The support member 242 faces the guide member 241 in the front-rear direction, and the support member 242 and guide member 241 are parallel to each other. The support member 242 is fixed to the guide member 241 by bolts 242b, and the distance between the support member 242 and guide member 241 is maintained by cylindrical spacers attached to the bolts 242b.

The base 242h of the support member 242 is formed in a concave arc shape. The curvature of the base 242h of the support member 242 is equal to the curvature of the base 241h of the guide member 241, and when viewed projected in the front-to-back direction, the base 242h of the support member 242 overlaps the base 241h of the guide member 241 in the front-to-back direction.

The support member 242 has guide portions 242a at both the left and right ends of its base 242h. The guide portions 242a guide the segment 32 that enters between them to the base 242h of the support member 242.

When the guide 240 is attached to the segment 32, the bottom edges 241h and 242h of the guide member 241 and support member 242 are in surface contact with the outer surface 32a of the segment 32. In this state, the guide member 241 and support member 142 are positioned upright on the outer surface 32a of the segment 32, extending radially outward from the segment 32. Since both ends 32b and 32c of the segment 32 in the circumferential direction abut against the left guide portions 241a and 242a and the right guide portions 241a and 242a, respectively, the circumferential movement of the guide member 241 and support member 142 relative to the segment 32 is constrained.

The manual locking mechanism 250 locks the guide member 241 and support member 242 to the segment 32, with their bases 241h and 242h in surface contact with the outer surface 32a of the segment 32, thereby maintaining the upright position of the guide member 241 and support member 242 on the outer surface 32a of the segment 32. The locking mechanism 250 allows for the release of the lock on the guide member 241 and support member 242 to the segment 32.

The locking mechanism 250 each comprises two hook members 251 and 252, driven links 253 and 254, two drive links 255, and a lever handle 257.

The drive link 255 is a component made of a steel disc. The drive link 255 is attached to the guide member 141 and the support member 142 so as to be rotatable around an axis of rotation parallel to the thickness direction of the guide member 141 and the support member 142. The position of the axis of rotation of the drive link 255 is at the left-right center of the guide member 141.

One end of each driven link 253 and 254 is sandwiched between two drive links 255 and rotatably connected to the drive links 255 by joints 253a and 254a, respectively. The midpoint between the left joint 253a and the right joint 254a is the position of the rotation axis of the drive link 255. The left driven link 253 extends to the left from joint 253a, and the right driven link 254 extends to the right from joint 254a.

The other end of the left-side driven link 253 is sandwiched between one end of the two left-side hook members 251 and rotatably connected to one end of the hook members 251 by a joint 253b. The other end of the right-side driven link 254 is sandwiched between one end of the two right-side hook members 252 and rotatably connected to one end of the hook members 252 by a joint 254b.

The left hook member 251 extends downward from the joint 253b. The middle portion of the left hook member 251 is rotatably connected to the left side of the guide member 241 and support member 242 by a pivot axis 251b. A hook 251a is provided at the other end of the left hook member 251.

The right-side hook member 252 extends downward from the joint 254b. The middle portion of the right-side hook member 252 is rotatably connected to the right side of the guide member 241 and support member 242 by a pivot axis 252b. A hook 252a is provided at the other end of the right-side hook member 252. The hook 252a of the right-side hook member 252 and the hook 251a of the left-side hook member 251 are bent into a hook shape, facing each other.

The link mechanism, consisting of a drive link 255 and a driven link 253, is a mechanism that swings the left and right hook members 251 and 252 to open and close the hooks 251a and 252a of the hook members 251 and 252. As the drive link 255 rotates, the left and right hook members 251 and 252 swing around their respective pivot axes 251b and 252b, causing the left and right hooks 251a and 252a to open and close. When the left and right hooks 251a and 252a are closed, the ends 32b and 32c of the segment 32 in the circumferential direction are hooked onto the left and right hooks 251a and 252a, respectively. When the left and right hooks 251a and 252a are open, the segment 32 is released from the hooks 251a and 252a.

The rotation axis of the drive link 255 is connected to the lever handle 257. The rotation of the lever handle 257 causes the drive link 255 to rotate.

2. Method of attaching the guide The method of attaching the guide 240 to the segment 32 will be explained below.
First, as shown in Figure 10, when the lever handle 257 is rotated counterclockwise, the left driven link 253 is pulled to the right by the drive link 255, and the right driven link 254 is pulled to the left by the drive link 255. As a result, the left hook member 251 swings clockwise around the pivot axis 251b, and the left hook 251a is pulled between the left guide parts 241a and 242a. On the other hand, the right hook member 252 swings counterclockwise around the pivot axis 252b, and the right hook 252a is pulled between the right guide parts 241a and 242a. In this way, the left and right hooks 251a and 252a swing in opposite directions to each other, causing them to open.

As shown in Figure 10, when hooks 251a and 252a are open, the left joint 253a is positioned counterclockwise relative to the line connecting the pivot axis 251b and the rotation axis of the drive link 255, and the right joint 254a is positioned counterclockwise relative to the line connecting the pivot axis 252b and the rotation axis of the drive link 255.

Next, the guide 240 is positioned radially outward of the segment 32. Then, the segment 32 is placed between the left and right guide portions 241a and 242a, so that the bottom edges 241h and 242h of the guide member 241 and the support member 242 make surface contact with the outer surface 32a of the segment 32.

Next, as shown in Figure 11, when the lever handle 257 is rotated clockwise, the left driven link 253 is pushed to the left by the drive link 255, and the right driven link 254 is pushed to the right by the drive link 255. As a result, the left hook member 251 swings counterclockwise around the pivot axis 251b, and the left hook 251a protrudes to the right from between the left guide parts 241a and 242a. On the other hand, the right hook member 252 swings clockwise around the pivot axis 252b, and the right hook 252a protrudes to the left from between the right guide parts 241a and 242a. In this way, the left and right hooks 251a and 252a close as the hook members 251 and 252 swing in opposite directions. Therefore, both ends 32b and 32c of segment 32 in the circumferential direction catch on the left and right hooks 251a and 252a, respectively, and segment 32 is restrained by being sandwiched between the bottom edges 241h and 242h of the guide member 241 and support member 242 and the hooks 251a and 252a.

As shown in Figure 11, when hooks 251a and 252a are closed, the left joint 253a is positioned clockwise relative to the line connecting the pivot axis 251b and the rotation axis of the drive link 255, and the right joint 254a is positioned counterclockwise relative to the line connecting the pivot axis 252b and the rotation axis of the drive link 255. Therefore, the torque generated in the drive link 255 by the load acting on the left hook 251a from segment 32 (the direction of this torque is clockwise in Figure 11) is canceled out by the torque generated in the drive link 255 by the load acting on the right hook 252a from segment 32 (the direction of this torque is counterclockwise in Figure 11). Therefore, the hooks 251a and 252a are locked in the closed position, and the segment 32 is held between the bottom edges 241h and 242h of the guide member 241 and the support member 242 and the hooks 251a and 252a.

3. How to remove the guide The method for removing the guide 240 from the segment 32 will be explained below.
As shown in Figure 10, when the lever handle 257 is rotated counterclockwise, the left hook member 251 swings clockwise around the pivot axis 251b, and the left hook 251a is pulled between the left guide parts 241a and 242a. On the other hand, the right hook member 252 swings counterclockwise around the pivot axis 252b, and the right hook 252a is pulled between the right guide parts 241a and 242a. In this way, the hooks 251a and 252a swing in opposite directions to each other, causing the left and right hooks 251a and 252a to open. As a result, the segment 32 is released from the hooks 251a and 252a.

Subsequently, the guide 240 is moved radially outward from the segment 32, and the segment 32 is removed from between the left guide sections 241a and 242a and the right guide sections 241a and 242a.

4. Advantageous Effects (1) The guide member 241 and the support member 242 are mounted facing each other in the axial direction, and the guide member 241 and the support member 242 support each other. Therefore, it is possible to prevent the guide member 241 from tilting in the axial direction with respect to the radial direction. Thus, the coil 99 does not unravel in the axial direction.

(2) Since the edge of the web 98 contacts the flat guide member 241 along the longitudinal direction of the web 98, deformation and damage to the edge of the web 98 can be prevented, and the generation of shavings and metal powder can also be prevented.

(3) The guide 240 is supported by the segment 32 at four points. The first point is where the base 241h of the guide member 241 contacts the outer surface 32a of the segment 32. The second point is where the base 142h of the support member 242 contacts the outer surface 32a of the segment 32. The third and fourth points are where the hooks 251a and 252a contact the opposite surfaces of the outer surface 32a of the segment 32. Therefore, the guide 240 is firmly fixed to the segment 32, and the guide member 141 is prevented from tilting axially relative to the radial direction. Thus, the coil 99 does not unravel in the axial direction.

(4) Since the base 241h of the guide member 241 makes surface contact with the outer surface 32a of the segment 32, the accuracy and effectiveness of the self-supporting ability of the guide member 241 are high. Since the base 242h of the support member 242 makes surface contact with the outer surface 32a of the segment 32, the accuracy and effectiveness of the self-supporting ability of the support member 242 are high. Therefore, the guide member 241 can be prevented from tilting axially with respect to the radial direction, and the coil 99 does not unravel axially.

(5) Locking and unlocking are achieved by the hook members 251 and 252 without utilizing the deformation of the guide member 241 and the support member 242. Therefore, the bottom edges 241h and 242h of the guide member 241 and the support member 242 can be made to make surface contact with the outer surface 32a of the segment 32. Thus, the accuracy and effectiveness of the self-supporting capabilities of the guide member 241 and the support member 242 are high.

(6) As the hooks 251a and 252a close, the guide member 241 does not deform, and the guide member 241 and the segment 32 move closer to each other, thereby achieving surface contact between the base edge 241h of the guide member 241 and the outer surface 32a of the segment 32. Because the base edge 241h of the guide member 241 makes surface contact with the outer surface 32a of the segment 32, there is no gap between the base edge 241h of the guide member 241 and the outer surface 32a of the segment 32. Therefore, the edge of the web 98 does not get caught between the guide member 241 and the segment 32. Thus, in the final stage of web 98 unwinding, the web 98 is reliably separated from the segment 32, preventing the web 98 from being wound in the reverse direction.

(7) When hooks 251a and 252a are closed, the torque generated in the drive link 255 by the load acting on the left hook 251a from segment 32 is offset by the torque generated in the drive link 255 by the load acting on the right hook 252a from segment 32. Therefore, hooks 251a and 252a are locked in the closed position, and the guide 240 is fixed to segment 32.

31... Main spindle 32... Segment 140, 240... Guide 141, 241... Guide member 142, 242... Support member 150, 250... Locking mechanism 151, 251, 252... Hook member 152... Spring 155... Cam holder 156... Eccentric cam 156a... Eccentric shaft 253, 254... Driven link 255... Drive link 98... Web 99... Coil

Claims (2)

A guide attached to a segment that contacts the inner circumferential surface of a coil in the central cavity of a coil formed by winding a web,
A guide member is provided in a flat plate shape having thickness in the axial direction, is erected on the outer surface of the segment on the radially outer side, extends radially outward from the segment, and abuts against the end face of the coil in the axial direction.
A locking mechanism is provided on the guide member, which locks the guide member to the segment in a state where the bottom edge of the guide member is in surface contact with the outer surface of the segment, and which can release the lock.
Equipped with,
The locking mechanism,
A hook member is attached to the guide member so as to be movable in the radial direction relative to the guide member, and hooks onto both ends of the segment in the circumferential direction, moves radially outward to clamp the segment between itself and the bottom edge of the guide member, and moves radially inward to release the clamping of the segment.
A spring connected to the hook member on the radially outer side of the hook member,
A cam holder is provided on the spring on the radially outer side of the hook member and has a circular hole with a central axis parallel to the axial direction,
An eccentric cam is fitted into the circular hole coaxially with the circular hole, is rotatable relative to the cam holder about the central axis of the circular hole, and is oscillating radially about an eccentric axis that is eccentric to the central axis of the circular hole,
A guide with [something]. A guide attached to a segment that contacts the inner circumferential surface of a coil in the central cavity of a coil formed by winding a web,
A guide member is provided in a flat plate shape having thickness in the axial direction, is erected on the outer surface of the segment on the radially outer side, extends radially outward from the segment, and abuts against the end face of the coil in the axial direction.
A locking mechanism is provided on the guide member, which locks the guide member to the segment in a state where the bottom edge of the guide member is in surface contact with the outer surface of the segment, and which can release the lock.
Equipped with,
The locking mechanism,
A pair of hook members are attached to the guide member so as to be openable and closable, and when closed, they catch on both ends of the segment in the circumferential direction and sandwich the segment between themselves and the bottom edge of the guide member, and when opened, they release the sandwiching of the segment.
A link mechanism for opening and closing the pair of hook members,
A guide with [something].