JP2004182445A - Inner peripheral surface shaping mechanism for hollow cylinder and inner peripheral surface shaping method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner peripheral surface shaping method for repairing a deformation by coming into contact with an inner peripheral surface of a hollow cylinder when an end of the inner peripheral surface is deformed. <P>SOLUTION: The inner peripheral surface shaping mechanism 50 is provide with a pair of small diameter chucks 58a and 58b having claw members 68 and 70, and a fluid circuit 54. The switching operation of each of solenoid valves 84, 86, 88 and 90 of the fluid circuit 54 causes the small diameter chuck 58a to come into contact with the inner peripheral surface 10 a of a core 10 so as to hold the core 10 incapable of rotating. In the meantime, the biasing force of a timing belt 66b causes the small diameter chuck 58b to be in contact while keeping it rotating. Thus the deformed inner peripheral surface 10a of the core 10 is repaired to shape the inner peripheral surface 10a into a uniform surface. The holding operation of the core 10 by the small diameter chuck 58a and the repair operation of the inner peripheral surface 10a by the small diameter chuck 58b are alternately switched. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inner peripheral surface shaping mechanism of a hollow cylindrical body and an inner peripheral surface shaping method thereof. More specifically, when the hollow cylindrical body is supported or processed, the inner peripheral surface is deformed. The present invention relates to a hollow cylinder inner peripheral surface shaping mechanism and an inner peripheral surface shaping method for correcting the deformation by contacting the inner peripheral surface.
[0002]
[Prior art]
Examples of the hollow cylindrical body include a winding core used for a light-shielding photosensitive material roll. In the light-shielding photosensitive material roll, first, a long photosensitive material sheet is wound around the outer peripheral surface of the core. This is called a photosensitive material roll. Next, a pair of disk-shaped light shielding members having ring-shaped protrusions provided on the surface of the central portion are fitted into both ends of the photosensitive material roll so that the ring-shaped protrusions are in contact with the inner peripheral surface of the core. Thereafter, a light-shielding reader including a long light-shielding sheet and a heat-shrinkable light-shielding film strip is joined to the front end of the photosensitive material sheet of the photosensitive material roll and wound around the outer periphery of the photosensitive material roll. For example, a paper tube or a plastic tube is used for the winding core (see Patent Document 1).
[0003]
In order to manufacture the photosensitive material roll, it is necessary to grip and roll the core. In this case, at both ends of the core for the purpose of saving space in the apparatus for manufacturing the light-shielding photosensitive material roll and facilitating the change of the core length (in other words, the width of the photosensitive material sheet). A rotation support mechanism has been devised that has needle-like protrusions provided to pierce.
[0004]
[Patent Document 1]
JP 2001-249431 A (paragraphs [0019], [0020], [0030])
[0005]
[Problems to be solved by the invention]
The present invention has been made in connection with the invention of Patent Document 1 described above, and when the hollow cylindrical body is supported or processed, the inner peripheral surface thereof is deformed. An object of the present invention is to provide a hollow cylindrical body inner peripheral surface shaping mechanism and an inner peripheral surface shaping method for correcting the deformation by contact.
[0006]
[Means for Solving the Problems]
The inner peripheral surface shaping mechanism of the hollow cylindrical body of the present invention is an inner peripheral surface shaping mechanism that corrects the deformation when the hollow cylindrical body is supported or processed and the end portion of the inner peripheral surface is deformed. A pair of contact claws that expand and contract in diameter to contact the inner peripheral surface, and a control unit that controls expansion and contraction of the contact claws, wherein the control unit includes the pair of contact claws By alternately switching between when one of the contact claws holds the hollow cylindrical body non-rotatably and when the other contact claw rotates to contact the inner peripheral surface, the hollow cylinder Both ends of the inner peripheral surface of the body are modified.
[0007]
According to the inner peripheral surface shaping mechanism of the hollow cylindrical body of the present invention, the hollow cylindrical body is held non-rotatable by using one pair of contact claws and bringing one of the contact claws into contact with the inner peripheral surface of the hollow cylindrical body. In the meantime, the deformed inner peripheral surface is corrected by contacting the inner peripheral surface of the hollow cylindrical body while rotating the other contact claw so that the inner peripheral surface is shaped into a uniform surface. Further, one contact claw that contacts and holds the inner peripheral surface of the hollow cylindrical body and the other contact claw that contacts the inner peripheral surface and corrects deformation of the inner peripheral surface are alternately switched. Yes. Thereby, the both ends of the internal peripheral surface of a hollow cylindrical body can be corrected efficiently.
[0008]
In the inner peripheral surface shaping mechanism described above, it is preferable that the outer diameter curvature of the contact claw at a predetermined portion in contact with the inner peripheral surface is substantially the same as the inner diameter curvature of the hollow cylindrical body. Thereby, it becomes possible to surface-contact the predetermined site | part of a contact nail with respect to the internal peripheral surface of a hollow cylindrical body. As a result, the hollow cylindrical body can be more reliably held in a non-rotatable manner. In addition, the inner peripheral surface can be prevented from being deformed into, for example, a depressed state, and the inner peripheral surface can be shaped into a uniform surface.
[0009]
Furthermore, in the inner peripheral surface shaping mechanism described above, the contact claw may be formed in a tapered shape having a small diameter toward the inner peripheral surface of the hollow cylindrical body. Thereby, the edge part vicinity of the internal peripheral surface of a hollow cylindrical body can be shape | molded more reliably to a uniform surface.
[0010]
Further, the method for shaping the inner peripheral surface of the hollow cylindrical body according to the present invention is an inner peripheral surface shaping that corrects the deformation when the hollow cylindrical body is supported or processed and deformation occurs at the end of the inner peripheral surface. In the method, one contact claw of a pair of contact claws is brought into contact with the inner peripheral surface of the hollow cylindrical body to rotate the other contact claw while holding the hollow cylinder non-rotatable. The inner circumferential surface of the hollow cylindrical body is corrected by bringing the hollow cylindrical body into contact with the inner circumferential surface of the hollow cylindrical body, and the hollow cylindrical body is rotated by the one contact claw so as not to rotate. The operation of alternately changing the inner peripheral surface of the cylindrical body is switched.
[0011]
According to the hollow cylinder inner peripheral surface shaping method of the present invention, a pair of contact claws are used to bring one contact claw into contact with the inner peripheral surface of the hollow cylinder so that the hollow cylinder can be held unrotatable. In the meantime, the deformed inner peripheral surface is corrected by contacting the inner peripheral surface of the hollow cylindrical body while rotating the other contact claw so that the inner peripheral surface is shaped into a uniform surface. Furthermore, one contact claw that contacts and holds the inner peripheral surface of the hollow cylindrical body and the other contact claw that slides on the inner peripheral surface and corrects deformation of the inner peripheral surface are alternately switched. Yes. Thereby, the both ends of the internal peripheral surface of a hollow cylindrical body can be corrected efficiently.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
First, the structure of a light-shielding photosensitive material roll 12 in which a core 10 that is a hollow cylindrical body is used and its manufacturing process will be described with reference to FIG.
[0013]
The light-shielding photosensitive material roll 12 is attached to both ends of the photosensitive material roll 16 and the photosensitive material roll 16 in which a long photosensitive material sheet 14 is wound around the outer peripheral surface of the core 10. A pair of disk-shaped light shielding members 18 that shield light applied to 16a and 16b, a light shielding reader 20 that shields light applied to the outer peripheral surface of the photosensitive material roll 16 by being wound around the outer periphery of the photosensitive material roll 16, and a light shielding reader 20 and the photosensitive material roll 16, and adhesive tapes 24 a and 24 b that are attached to the tip of the light-shielding reader 20 and seal the light-shielding reader 20.
[0014]
Although the paper core 10 is used in the present embodiment, for example, a plastic core may be used. The photosensitive material sheet 14 may be a photographic film, a photographic paper, a printing plate making film, or the like.
[0015]
The disk-shaped light shielding member 18 is composed of a disk-shaped ring 18a and a cap 18d provided with a flange portion 18b and a ring-shaped protrusion 18c, and each of these components is configured to be shielded from light. In this case, the ring-shaped protrusion 18c and the inner peripheral surface 10a of the core 10 are preferably bonded with an adhesive. The disc-shaped light shielding member 18 may be formed by fitting a cap 18d into the ring 18a and bonding and fixing the inner surface of the flange portion 18b of the cap 18d and the outer surface of the ring 18a. Further, the disk-shaped light shielding member 18 may be formed by integrally forming the ring 18a and the cap 18d.
[0016]
The light-shielding reader 20 has a light-shielding sheet 26 that is long and has the same width as the photosensitive material sheet 14. On both sides of the light-shielding sheet 26, heat-shrinkable light-shielding film strips 28 are provided that protrude outward in the width direction and can be torn along the both sides in the length direction. The heat-shrinkable light-shielding film strips 28 shield light emitted from a gap formed between the disk-shaped light-shielding member 18 and the light-shielding sheet 26.
[0017]
The light-shielding photosensitive material roll 12 thus configured is manufactured by the manufacturing process described below.
[0018]
A photosensitive material sheet 14 slit to a predetermined size (width) from a raw material roll (not shown) is wound around the outer peripheral surface of the winding core 10 by a predetermined length (see FIG. 1A). This is the photosensitive material roll 16. Disc-shaped light-shielding members 18 are inserted into both ends of the photosensitive material roll 16 while bringing the ring-shaped protrusions 18c of the cap 18d into contact with the inner peripheral surface 10a of the core 10 (see FIG. 1B).
[0019]
Next, the light shielding sheet 26 of the light shielding reader 20 is joined to the front end of the photosensitive material sheet 14 of the photosensitive material roll 16 by the adhesive tape 22 (see FIG. 1C). The light-shielding reader 20 is wound around the outer periphery of the photosensitive material roll 16 and sealed with adhesive tapes 24a and 24b. Thereafter, the heat-shrinkable light-shielding film strip 28 is fused to the disk-shaped light-shielding member 18 by heating means such as a heater (not shown) to obtain the light-shielding photosensitive material roll 12 (see FIG. 1D).
[0020]
Next, referring to FIG. 2, in the process of winding the photosensitive material sheet 14 around the core 10 in the manufacturing process of the light-shielding photosensitive material roll 12, the rotation support for gripping and rotating the core 10. The configuration and operation of the mechanism 30 will be described.
[0021]
The rotation support mechanism 30 includes a pair of circular bases 34a and 34b provided with a plurality of needle-like protrusions 32, one end connected to the circular bases 34a and 34b, and the other end rotatably supported by a bearing (not shown). Shafts 36a and 36b. The circular base portions 34 a and 34 b include a circular convex portion 40 having a tapered surface 38 that contacts the inner peripheral surface 10 a of the core 10 and guides the core 10 on the rotation axis P.
[0022]
The reason why the rotation support mechanism 30 provided with such needle-like protrusions 32 is used is that space saving of the apparatus for manufacturing the light-shielding photosensitive material roll 12 and the length of the core 10 (in other words, the width of the photosensitive material sheet 14). This is for facilitating the type change. In contrast, for example, when a so-called expansion / contraction chuck (also referred to as an open / close chuck) that contacts and grips the inner peripheral surface 10a of the core 10 is used, the space occupied by the expansion / contraction chuck itself. As the number of parallel windings of the cores 10 increases and the number of types due to the length of the cores 10 increases, the apparatus becomes larger and the space efficiency is extremely deteriorated.
[0023]
In the present embodiment, the circular base 34a side is the reference contact claw side, and the other end of the rotating shaft 36a is connected to a rotation driving means such as a motor (not shown) and the other end of the rotating shaft 36a. 2 is mounted on a moving means (not shown) including a cylinder and a moving table that move forward and backward in the direction of arrow X in FIG. 2, or a motor and a ball screw. On the other hand, a bearing or the like that supports the other end of the rotary shaft 36b with the circular base 34b side as the non-reference side is placed on a moving means configured in the same manner as described above.
[0024]
In the rotation support mechanism 30 configured as described above, as shown in FIG. 3A, after the core 10 is supplied between the circular bases 34a and 34b (in FIG. 3A, only the circular base 34a side is illustrated. The circular base portions 34a and 34b are moved toward the core 10 by the operations of the moving means. Thereby, the core 10 is disposed on the rotation axis P (see FIG. 2) under the guide action of the circular convex portion 40 and is held by the needle-like protrusions 32 being pierced at both ends of the core 10. .
[0025]
Next, the gripped core 10 is rotated by driving the rotation driving means, and the photosensitive material sheet 14 positioned in a direction perpendicular to the length direction of the core 10 is wound around the outer peripheral surface of the rotating core 10. It is done. Then, after the photosensitive material sheet 14 is wound around the core 10 for a predetermined length, it is cut in the width direction to form a photosensitive material roll 16.
[0026]
Thereafter, the driving of the rotation driving means is stopped and simultaneously the rotation of the photosensitive material roll 16 is also stopped, and the circular base portions 34a and 34b are separated from each other by the operation of the moving means. As a result, the photosensitive material roll 16 is released from the gripping action by the needle-like protrusions 32 and taken out.
[0027]
At this time, as shown in FIG. 3B, a hole 10b is formed by piercing the needle-like protrusion 32 at both ends of the core 10 of the photosensitive material roll 16 taken out. As a result, the inner peripheral surface 10a The raised portions 10c are formed at both ends. By forming the raised portion 10c, the ring-shaped protrusion 18c of the disk-shaped light shielding member 18 interferes with the raised portion 10c in the step of inserting the disk-shaped light shielding member 18 into the core 10 of the photosensitive material roll 16. In some cases, the disk-shaped light shielding member 18 cannot be inserted into the core 10.
[0028]
Therefore, in order to avoid such a situation, the present applicant corrects the raised portion 10c formed on the inner peripheral surface 10a of the core 10 and shapes the inner peripheral surface 10a into a uniform surface. The inner peripheral surface shaping mechanism 50 of the core 10 according to the present embodiment has been developed. The inner peripheral surface shaping mechanism 50 will be described below with reference to FIGS. 4 and 5A in relation to the shaping method of the inner peripheral surface 10a.
[0029]
The inner peripheral surface shaping mechanism 50 is inserted into the inner peripheral surface 10a of the core 10 in a reduced diameter state, and then expanded in diameter to contact the inner peripheral surface 10a with a pair of chuck portions 52a and 52b. And a fluid circuit section (control section) 54 for controlling the diameter expansion and contraction of each chuck section 52a, 52b with a pressure fluid such as compressed air.
[0030]
The chuck portions 52a and 52b include chuck bodies 56a and 56b, small-diameter chucks (for example, corresponding to a 2-inch diameter core 10) 58a and 58b, and large-diameter chucks (for example, a 3-inch diameter core 10). Correspondence) 60a, 60b. The small diameter chucks 58a and 58b and the large diameter chucks 60a and 60b are coaxially arranged on the chuck bodies 56a and 56b, respectively.
[0031]
The chuck bodies 56a and 56b are formed in a multistage cylindrical shape having a small diameter portion 57a and a large diameter portion 57b, and are rotatably supported by shaft members 62a and 62b having bearings such as a bearing (not shown) therein. The shaft members 62a and 62b are fixed to a frame member 64 placed on a moving means (not shown). Further, the chuck bodies 56a and 56b have a drive part 57c around which timing belts 66a and 66b for transmitting a drive force from an individual rotation drive source (not shown) are hung.
[0032]
Small-diameter chucks 58a and 58b are attached to the small-diameter portions 57a of the chuck bodies 56a and 56b, while large-diameter chucks 60a and 60b are attached to the large-diameter portions 57b.
[0033]
The small diameter chucks 58 a and 58 b include a plurality of, for example, four small diameter claw members (contact claws) 68 that come into contact with the inner peripheral surface 10 a of the core 10. These claw members 68 are slidably supported by wedge-shaped members (not shown) provided inside the chuck bodies 56a and 56b. This wedge-shaped member is connected to a piston (not shown), and slides by the pressure fluid controlled by the fluid circuit unit 54. As the wedge-shaped member slides, the claw member 68 expands and contracts along the radial direction of the chuck bodies 56a and 56b (see FIG. 5A).
[0034]
In FIG. 4, reference numerals 69a and 69b denote connecting portions for connecting to the fluid circuit portion 54 via the shaft members 62a and 62b for supplying and exhausting the piston. In the normal state, that is, in a state where the piston is not biased by the pressure fluid from the fluid circuit portion 54, the pawl member 68 is biased by a spring (not shown) provided in the chuck bodies 56a and 56b. The diameter is reduced by the means.
[0035]
The large-diameter chucks 60a and 60b include a plurality of, for example, four large-diameter claw members (contact claws) 70 that come into contact with the inner peripheral surface 10a of the winding core 10. Therefore, the small diameter chucks 58a and 58b are configured in the same manner as described above.
[0036]
The claw members 68 and 70 are formed in a tapered shape having a small diameter directed toward the distal end side of the chuck main bodies 56a and 56b, that is, the inner peripheral surface 10a of the core 10. The taper angle is preferably in the range of 3 ° to 20 ° with respect to the rotation axis of the chuck bodies 56a and 56b, and more preferably 5 °. Further, the claw members 68 and 70 are made of a metal such as stainless steel, and the outer surfaces 68a and 70a are preferably buffed (a state in which a cloth or leather is polished with an abrasive).
[0037]
Further, as shown in FIG. 5A, the claw members 68 and 70 have predetermined portions 68d and 70d (see FIG. 4) that contact the inner peripheral surface 10a of the core 10 on the outer surfaces 68a and 70a. It is formed in an arc shape having an arc diameter (outer diameter curvature) D1 ′ substantially the same as the diameter (inner diameter curvature) D1 of 10a. The arc diameter D1 ′ is preferably within a range of D1 ± 3 [mm]. On the other hand, the inner surfaces 68b and 70b of the claw members 68 and 70 are formed in an arc shape corresponding to the outer diameters D2 and D3 of the small-diameter portion 57a and the large-diameter portion 57b in a reduced diameter state. Further, chamfered portions 68c and 70c having arcuate cross sections are formed at both corners of the outer surfaces 68a and 70a of the claw members 68 and 70, respectively.
[0038]
Note that the applicant of the present invention, for example, as shown in FIG. 5B, until the adoption of the above-described claw members 68, 70, has a small diameter having an outer surface 72 a in which the reduced diameter becomes a circular state of the outer diameter D 2 ′. And a large-diameter claw member 74 having an outer surface 74a in which the diameter of the claw member 72 is reduced to a circular shape with an outer diameter D3 ′. In these claw members 72 and 74, since the outer surfaces 72a and 74a in the expanded state are in local contact with the inner peripheral surface 10a of the core 10 (see point Q), the outer surface 72a of the inner peripheral surface 10a. , 74a may be deformed into a recessed state, and as a result, the inner peripheral surface 10a may not be uniformly shaped.
[0039]
In order to avoid such a situation, in the present embodiment, the claw members 68 and 70 are employed, and the predetermined portions 68d and 70d on the outer surfaces 68a and 70a are in relation to the inner peripheral surface 10a of the core 10. I try not to contact them locally.
[0040]
The fluid circuit unit 54 applies a pressure fluid such as compressed air supplied from a fluid pressure source to a predetermined pressure (for example, 4 [kg / cm ² (0.4 [MPa]), and this pressure is hereinafter referred to as a low pressure. ) And the pressure fluid adjusted by the regulator 80 at a higher pressure (for example, 10 [kg / cm ² (9.8 [MPa]), and this pressure is hereinafter referred to as a high pressure. ), The electromagnetic valves 84 and 86 for switching between the low pressure and the high pressure, and the electromagnetic valves 88 and 90 for switching supply and exhaust of the pistons provided in the chuck bodies 56a and 56b. Prepare. In FIG. 4, reference numeral 92 indicates a pressure gauge for displaying the pressure adjusted by the regulator 80, and reference numeral 94 indicates a flow path including a piping tube or a pipe.
[0041]
The operation and effect of the inner peripheral surface shaping mechanism 50 configured as described above will be described in relation to the shaping method of the inner peripheral surface 10a of the core 10. In the following description, the same components as those of the inner peripheral surface shaping mechanism 50 described above are denoted by the same reference numerals, and detailed description thereof is omitted.
[0042]
In the above-described manufacturing process of the light-shielding photosensitive material roll 12, after the photosensitive material roll 16 is taken out, the photosensitive material roll 16 is positioned at a predetermined position between the chuck portions 52 a and 52 b of the inner peripheral surface shaping mechanism 50. Next, the chuck portions 52a and 52b approach each other together with the frame member 64 toward the core 10 of the photosensitive material roll 16, and, for example, when the core 10 has a diameter of 2 inches, the chucks 58a and 58b for small diameters. The predetermined part 68d in the outer surface 68a of each claw member 68 is positioned at a position in contact with both ends of the inner peripheral surface 10a of the core 10 (see FIG. 4).
[0043]
Next, the connecting portion 69a of the chuck main body 56a is connected to the pressure increasing valve 82 side by the switching operation of the electromagnetic valves 84 and 88 of the fluid circuit portion 54, and the pressure fluid adjusted to a high pressure causes the small diameter chuck 58a to slide. Supplied to the piston. Thereby, each claw member 68 of the small-diameter chuck 58a expands in diameter and comes into contact with the inner peripheral surface 10a of the core 10 at a high pressure. Accordingly, the core 10 is pressed by the small-diameter chuck 58a, and as a result, the core 10 is held unrotatable. At this time, since the predetermined portion 68d of the claw member 68 is formed to have an arc diameter D1 ′ that is substantially the same as the diameter D1 of the inner peripheral surface 10a of the core 10, it contacts the inner peripheral surface 10a evenly. . As a result, the core 10 can be more reliably held non-rotatable, and the inner peripheral surface 10a of the core 10 is not deformed into, for example, a recessed state.
[0044]
On the other hand, by the switching operation of the electromagnetic valves 86 and 90 of the fluid circuit portion 54, the connecting portion 69b of the chuck body 56b is connected to the regulator 80 side, and the pressure fluid adjusted to a low pressure acts as a piston for sliding the small diameter chuck 58b. Supplied. Thereby, each claw member 68 of the small-diameter chuck 58b is expanded in diameter and comes into contact with the inner peripheral surface 10a of the core 10 at a low pressure. Accordingly, the core 10 is not pressed by the small diameter chuck 58b.
[0045]
In this state, the small-diameter chuck 58b together with the chuck body 56b is rotated at a predetermined rotational speed by the driving force of the rotary drive source via the timing belt 66b. Thereby, each claw member 68 of the small-diameter chuck 58b that makes contact with the inner peripheral surface 10a at a low pressure while rotating rotates the inner peripheral surface 10a while correcting the above-described raised portion 10c. At this time, since the predetermined portion 68d of the claw member 68 is formed to have an arc diameter D1 ′ that is substantially the same as the diameter D1 of the inner peripheral surface 10a of the core 10, it contacts the inner peripheral surface 10a evenly. . As a result, the inner peripheral surface 10a can be shaped into a uniform surface. Further, since the claw member 68 is formed in a tapered shape that is reduced in diameter toward the inside of the inner peripheral surface 10a, the vicinity of the end portion of the inner peripheral surface 10a of the core 10 is more reliably shaped into a uniform surface. can do. For example, in the case of the paper core 10, the predetermined number of rotations is preferably about 1 to 2 rotations.
[0046]
Subsequently, after the rotation of the chuck body 56b that has been rotating via the timing belt 66b is stopped, the connecting portion 69a of the chuck body 56a is controlled by the switching operation of the electromagnetic valves 84 and 86 of the fluid circuit portion 54 described above. A pressure fluid connected to the 80 side and adjusted to a low pressure is supplied to a piston that slides the small-diameter chuck 58a. On the other hand, the connecting portion 69b of the chuck body 56b is connected to the pressure increasing valve 82 side, and the pressure fluid adjusted to a high pressure is supplied to the piston that slides the small diameter chuck 58b. As a result, the core 10 is pressed and held by the small-diameter chuck 58b in a non-rotatable manner as described above. On the other hand, the inner peripheral surface 10a of the winding core 10 is shaped into a uniform surface while correcting the above-described raised portion 10c by a small diameter chuck 58a that contacts while rotating by rotational driving by the timing belt 66a.
[0047]
Next, after the rotation of the chuck main body 56a that has been rotating through the timing belt 66a is stopped, the pistons that slide the small-diameter chucks 58a and 58b by the switching operation of the electromagnetic valves 88 and 90 of the fluid circuit portion 54 are performed. Then, the pressure fluid is exhausted, and the small diameter chucks 58a and 58b are reduced in diameter by the urging means. Thereafter, the chuck portions 52a and 52b are separated from each other together with the frame members 64, and the photosensitive material roll 16 in which the inner peripheral surface 10a of the core 10 is shaped is taken out.
[0048]
Thus, by shaping the inner peripheral surface 10a of the core 10 of the photosensitive material roll 16 using the inner peripheral surface shaping mechanism 50, the disk-shaped light shielding member 18 in the manufacturing process of the light-shielding photosensitive material roll 12 described above. Therefore, the inner peripheral surface 10a or the raised portion 10c of the winding core 10 does not interfere. For this reason, the disk-shaped light shielding member 18 can be reliably inserted into both ends of the photosensitive material roll 16.
[0049]
In the present embodiment, the 2-inch diameter core 10 is illustrated, but, for example, even when the core 10 has a 3-inch diameter, by changing the positions at which the chuck portions 52a and 52b approach each other. Can be easily applied. The inner peripheral surface shaping mechanism 50 according to the present embodiment can also be applied when correcting cutting burrs, burr, etc. that occur when the core 10 is cut.
[0050]
Furthermore, in the present embodiment, the core 10 used for the light-shielding photosensitive material roll 12 is illustrated as a hollow cylindrical body, but the present invention is not limited to this, and the hollow core may have a hollow cylindrical shape. Needless to say, the inner peripheral surface shaping mechanism 50 according to the present embodiment is applicable.
[0051]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0052]
That is, when the hollow cylindrical body is supported or processed and the end portion of the inner peripheral surface is deformed, both end portions of the inner peripheral surface can be efficiently corrected. In addition, the inner peripheral surface can be prevented from being deformed into, for example, a recessed state, and the inner peripheral surface can be shaped into a uniform surface.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view of a structure and manufacturing process of a light-shielding photosensitive material roll using a core that is a hollow cylindrical body.
FIG. 2 is a perspective explanatory view of a process of winding a photosensitive material sheet around a winding core in the manufacturing process.
3A is an explanatory side view of a rotation support mechanism for rotating and supporting the winding core shown in FIG. 2, and FIG. 3B is a drawing of the winding core after being rotated and supported by the rotation support mechanism; It is edge part explanatory drawing.
FIG. 4 is a configuration explanatory diagram of an inner peripheral surface shaping mechanism according to the present embodiment.
5A is a configuration explanatory diagram of the chuck portion of the inner peripheral surface shaping mechanism in the section taken along line VA-VA in FIG. 4, and FIG. 5B is a configuration explanatory diagram of a comparative example of the chuck portion.
[Explanation of symbols]
10 ... core 10a ... inner peripheral surface
10c: raised portion 12 ... light-shielding photosensitive material roll
14 ... photosensitive material sheet 16 ... photosensitive material roll
18 ... Disc-shaped light shielding member 20 ... Light shielding reader
50 ... Inner peripheral surface shaping mechanism 52a, 52b ... Chuck part
54 ... Fluid circuit portion 56a, 56b ... Chuck body
57a ... small diameter part 57b ... large diameter part
58a, 58b ... Chuck for small diameter 60a, 60b ... Chuck for large diameter
68, 70, 72, 74 ... claw members 68a, 70a, 72a, 72b ... outer surface
68b, 70b ... inner surface 68c, 70c ... chamfered portion
68d, 70d ... predetermined part 80 ... regulator
82 ... Booster regulator 84, 86, 88, 90 ... Solenoid valve
92 ... Pressure gauge 94 ... Flow path
D1 ... Diameter (inner diameter curvature) D1 '... Arc diameter (outer diameter curvature)

Claims (4)

An inner peripheral surface shaping mechanism that corrects the deformation when the hollow cylindrical body is supported or processed to cause deformation at the end of the inner peripheral surface,
A pair of contact claws that expand and contract to contact the inner peripheral surface;
A controller for controlling the diameter expansion and contraction of the contact claw,
The control unit alternates between when the one contact claw of the pair of contact claws holds the hollow cylindrical body non-rotatably and when the other contact claw rotates to contact the inner peripheral surface. An inner peripheral surface shaping mechanism for a hollow cylindrical body, wherein both ends of the inner peripheral surface of the hollow cylindrical body are corrected by switching to In the inner peripheral surface shaping mechanism according to claim 1,
An inner peripheral surface shaping mechanism for a hollow cylindrical body, wherein an outer diameter curvature of the contact claw at a predetermined portion in contact with the inner peripheral surface is formed to be substantially the same diameter as an inner diameter curvature of the hollow cylindrical body. In the inner peripheral surface shaping mechanism according to claim 1 or 2,
The said contact claw is formed in the taper shape which becomes small diameter toward the inner peripheral surface of a hollow cylindrical body, The inner peripheral surface shaping mechanism of the hollow cylindrical body characterized by the above-mentioned. An inner peripheral surface shaping method for correcting deformation when a hollow cylindrical body is supported or processed to cause deformation at an end portion of the inner peripheral surface,
Of the pair of contact claws, one of the contact claws is brought into contact with the inner peripheral surface of the hollow cylindrical body to hold the hollow cylindrical body in a non-rotatable manner, while the other contact claw is rotated to rotate the hollow cylindrical body. And correcting the inner peripheral surface by contacting the inner peripheral surface of
A hollow cylindrical body characterized in that the operation of holding the hollow cylindrical body non-rotatably by the one contact claw and the operation of correcting the inner peripheral surface of the hollow cylindrical body by the other contact claw are alternately switched. Of inner surface of

Images