JP4475441B2 - Manufacturing method and cutting device of elastic member for conveyance roll - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an elastic member for a transport roll and a cutting device, and in particular, a disc such as an optical disc such as a CD, MD, LD, or DVD or a magneto-optical disc used in an audio device, an information device, a video device, or the like. It relates to the manufacturing method and cutting equipment of the elastic member for conveying roll for conveying the to each device.
[0002]
[Prior art]
Conventionally, for setting a CD, MD, LD, DVD optical disk or magneto-optical disk on a turntable in the apparatus, for example, as shown in FIG. A transport roll 1 provided with an elastic member 3 is used. The transport roll 1 is provided, for example, facing the resin plate 4, and the disk 5 is transported between the resin plate 4 by rotating the transport roll. Further, for example, there is a type in which a pair of transport rolls 1 are provided so as to face each other, and one of the transport rolls is driven to rotate so that the disk 5 is transported between them.
[0003]
The elastic member 3 for the transport roll has a shape in which the diameter gradually decreases from one end portion in the axial direction toward the other end portion, and is inserted from both sides of the shaft 2 so that the small diameter end portions are located in the center portion. As a whole, the diameter gradually decreases from both ends toward the center, and the conveyed disk 5 is centered.
[0004]
In addition, such a conveyance roll elastic member 3 is generally formed by a mold or the like.
[0005]
[Problems to be solved by the invention]
However, when the elastic member for the transport roll is molded, there is a problem that burrs and the like are formed at the longitudinal end portion and the radial end portion although the product size is increased. Further, this burr cannot be completely removed, which causes a serious problem with the above-described transport roll, and adversely affects the performance after being mounted on various devices.
[0006]
In view of such circumstances, to provide a manufacturing method and cutting equipment of the elastic member for conveying roll which can reduce the increased cost can be and productivity possible to improve the accuracy of the product Let it be an issue.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention for solving the above-mentioned problem, in the method for manufacturing an elastic member for a transport roll that is fitted to the outer peripheral surface of the core roll and constitutes the transport roll, it is longer than a predetermined length and has a flange portion at one end thereof. A first step of forming a cylindrical member having the cylindrical member, and the cylindrical member is inserted and held in a holding hole of a rotating base that is rotatably held, and is provided in the radial direction from the outer peripheral surface of the rotating base. A cutter for cutting the tubular member is fixedly held in a slit that intersects the blade, and at least the vicinity of the flange portion side end of the tubular member is brought into contact with the cutter by rotating the rotating base. And a second step of removing burrs at the end by cutting the substrate to a predetermined length.
[0008]
According to a second aspect of the present invention, in the first aspect, in the second step, the vicinity of both ends in the axial direction of the cylindrical member is abutted with a cutter and cut to a predetermined length. It exists in the manufacturing method of the elastic member for conveyance rolls.
[0010]
According to a third aspect of the present invention, at least the vicinity of the flange portion side end portion of the elastic member for a transport roll, which includes a cylindrical portion and a flange portion provided on one end portion side of the cylindrical portion, is cut into a predetermined portion. In the cutting device for the elastic member for the transport roll that removes the burr at the end of the elastic member for the transport roll by setting the length, the transport roll has slits provided in the radial direction from the outer peripheral end surface in the entire circumferential direction. A rotating base that has a holding hole into which the cylindrical portion of the elastic member is inserted and held so as to intersect the slit, and is rotatably held; drive means for rotationally driving the rotating base; and the rotating base A cutting means for fixing and holding a cutter for cutting the elastic member for the transport roll in a state of being inserted into each of the slits.
[0011]
A fourth aspect of the present invention, in a third aspect, the inner diameter of the holding hole is in the cutting device of the elastic member for conveying roll, characterized in that the outer diameter and the same diameter of the cylindrical portion .
[0012]
According to a fifth aspect of the present invention, in the third or fourth aspect, the slit is provided at two positions in the thickness direction of the rotating base, and the elastic member is cut at two positions. It exists in the cutting device of an elastic member.
[0013]
According to a sixth aspect of the present invention, in any one of the third to fifth aspects, a detection unit that detects a protrusion of the flange portion of the elastic member that is held on the rotating base is a predetermined amount or more is provided. It is in the cutting apparatus of the elastic member for conveyance rolls characterized by the above-mentioned.
[0017]
In this invention, the elastic member for conveyance rolls without a burr | flash at an edge part can be manufactured easily and efficiently. Moreover, the conveyance roll which improved quality can be easily implement | achieved by using such an elastic member for conveyance rolls.
[0018]
In order to solve the above-mentioned problems, a so-called cot, which is an elastic member longer than a desired length, is once formed, and this cot is placed on a lathe or a fixed base, for example, from above. There is a method of forming an elastic member for a transport roll by cutting to a desired length using a parting device that presses and cuts a blade such as a razor.
[0019]
However, for example, when a cot is cut using a lathe, the cut surface is relatively clean, but one cot must be fixed to the lathe one by one, resulting in low productivity and high cost. . On the other hand, when a parting device is used, there is a problem that a relatively large number of rough cutting surfaces are likely to occur, and a position shift occurs because the cot is placed horizontally on the fixed base. There is a problem that the incidence of defective products is high.
[0020]
The apparatus of the present invention solves such a problem.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, although this invention is demonstrated based on embodiment, unless it is contrary to the meaning of this invention, it is not limited to this embodiment.
[0022]
(Embodiment 1)
FIG. 1 is a schematic plan view and a cross-sectional view of the elastic member cutting device according to the first embodiment.
[0023]
As shown in FIG. 1, the apparatus main body 11 of the elastic member cutting device 10 for a transport roll according to the present embodiment has an inclined surface 11a whose upper surface is inclined at a predetermined angle. On the inclined surface 11a of the apparatus main body, a rotating base 13 is provided via a rotating shaft 12, and a driving motor (not shown) or the like is connected to the rotating shaft 12, and the inclined surface 11a is driven by driving the driving motor. The rotation base 13 is rotated along the axis. In addition, as will be described in detail later, two cutting means 14A and 14B are respectively provided at predetermined heights in the vicinity of the peripheral surface of the rotating base 13.
[0024]
In the present embodiment, for example, the rotating base 13 is a metal substantially disk-shaped plate, and a plurality of through holes 15 are formed at predetermined intervals in the circumferential direction in the vicinity of the end in the surface direction. . This through-hole 15 is for inserting and holding an elastic member of a predetermined shape, so-called cot 20 (hereinafter, cot).
[0025]
Here, as shown in FIG. 2, a so-called cot 20 that is an elastic member used in the apparatus of the present invention has a cylindrical cylindrical portion 21 whose diameter gradually decreases from one axial end portion to the other end portion. And a flange portion 22 provided on one end side thereof and projecting in the radial direction. Moreover, the cylindrical part 21 is formed longer than the desired length of the elastic member 3 for conveyance rolls, and the upper end part 23 and the lower end part 24 are removed by cutting the vicinity of both ends of the cylindrical part 21 of the cot 20. By doing this, it is set as the elastic member 3 for conveyance rolls of desired length. Thereby, for example, the burr 25 in the outer peripheral upper radial direction, which is generated on the end face in the longitudinal direction of the cot 20 during molding, is reliably removed, and the elastic member 3 for the transport roll having a smooth end face is obtained.
[0026]
Moreover, in this embodiment, as shown in FIG. 3, the through-hole 15 of the rotation base | substrate 13 is formed with the internal diameter substantially the same as the outer diameter of the cylindrical part 21 of such a cot 20. As shown in FIG. Of course, the through hole 15 may have a straight shape. When the cylindrical portion 21 of the cot 20 is inserted into the through hole 15 of the rotating base 13, the flange portion 22 is locked on the rotating base 13 and easily positioned.
[0027]
Furthermore, slit portions 16A and 16B are formed over the entire circumference at a predetermined position on the peripheral edge of the rotary base 13, for example, in the vicinity of the upper and lower end surfaces of the rotary base 13 to at least the region beyond the through hole 15 in this embodiment. Has been. The method of forming the slit portions 16A and 16B is not particularly limited. For example, the slit portions 16A and 16B have a five-layer structure in which three disks having a predetermined diameter and two disks having a relatively small diameter are alternately stacked. Two slit portions can be easily formed.
[0028]
On the other hand, the cutting means provided in the vicinity of the peripheral surface of the rotary base 13 is for cutting the cylindrical portion 21 of the cot 20 held by the rotary base 13 at a predetermined position. For example, the cutting means 17 such as a razor The cutter 17 is fixed and a fixing portion 18 is movably held on the apparatus main body. The blade 17 is disposed in each of the slit portions 16 </ b> A and 16 </ b> B of the rotary base 13 and is securely fixed by the fixing portion 17 so as not to contact the rotary base 13. Moreover, the fixing | fixed part 18 is an XYZ stage, for example, and can move the cutter 17 precisely and easily in a three-dimensional direction with a dial or the like.
[0029]
Hereinafter, the cott cutting process will be described.
[0030]
First, as shown in FIG. 4A, the cot 20 is placed at a predetermined position in the through hole 15 of the rotating base 13 that rotates intermittently at a constant speed or at a predetermined angle, for example, at a predetermined angle from the blade 17. Insert. As described above, the through hole 15 of the rotary base 13 is formed with substantially the same diameter to the extent that the cylindrical part 21 of the cot 20 can be inserted, so that the flange part 22 of the cot 20 has a surface of the rotary base 13. It is easily positioned by contacting the
[0031]
Next, as shown in FIG. 4B, the cot 20 is conveyed by the rotational movement of the rotary base 13, and the lower end portion 24 of the cot 20 is moved by the cutter 17 of the cutting means 14A fixed in the lower slit portion 16A. Cut off. At the same time, the upper end portion 23 of the cot 20 is cut off by the blade 17 of the cutting portion 14B. That is, by rotating the rotary base 13 in a predetermined direction, the vicinity of the lower end portion of the cylindrical portion 21 of the cot 20 is pressed against the blade 17 disposed in the slit portion 16A and cut, and the upper slit The vicinity of the upper end portion of the tubular portion 21 of the cot 20 is pressed against the blade 17 disposed in the portion 16B and cut. And the central part by which the upper end part 23 and the lower end part 24 of the cot 20 were cut | disconnected in this way becomes the elastic member 3 for conveyance rolls of predetermined length.
[0032]
Further, the lower end portion 24 cut in this way is dropped by its own weight from the lower opening of the through hole 15 and accumulated in a trash box or the like, and the elastic member 3 and the upper end portion 23 are held in the through hole 15. It is in a state.
[0033]
Next, the rotary base 13 is rotated and moved to a predetermined position, and as shown in FIG. 4C, the rod-shaped member 19 and the like are inserted from the lower opening of the through hole 15 to take out the upper end portion 23 and the elastic member 3. . First, when the upper end portion 23 is lightly pushed up by pushing up the elastic member 3 from the lower side by the rod-like member 19, since the rotating base 13 is inclined, the upper end portion 23 falls from its own weight and is similar to the lower end portion 24. Accumulated in trash. Thereafter, the rod-shaped member 19 is further pushed up, and the elastic member 3 is pushed out from the upper opening of the through hole 15 and dropped by its own weight into a predetermined box or the like. Thereby, a series of processes are completed, and the above-described processes are repeated thereafter.
[0034]
In the present embodiment, the upper end portion 23 and the elastic member 3 are dropped by their own weight at the same position and taken out from the through hole 15 of the rotating substrate 13. However, the present invention is not limited to this. The upper end portion 23 and the elastic member 3 may be dropped by their own weight at different positions using the two rod-shaped members provided. Thereby, the upper end part 23 and the elastic member 3 which become unnecessary can be reliably separated.
[0035]
Further, in the present embodiment, the cut elastic member 3 is pushed out from the through hole 15 by the rod-like member 19, but the present invention is not limited to this. For example, the clearance between the through hole 15 and the cot 20 is changed to the cut elastic member. You may make it adjust so that the member 3 falls below. For example, if the through hole 15 has a straight shape, the product falls down.
[0036]
Furthermore, in this embodiment, although the upper end part 20 and the lower end part 24 of the cot 20 were cut | disconnected simultaneously, it is not limited to this, Of course, you may make it cut | disconnect these at separate timings.
[0037]
Thus, by using the apparatus of the present invention to remove both end portions of the cot 20 to form the transport roll elastic member 3, it is possible to easily manufacture a good transport roll elastic member 3 having no burr on the end surface. it can. The production performance of the elastic member 3 for the transport roll is, for example, about 120 / h on a conventional lathe and about 600 to 700 / h on a parting device. On the other hand, in the apparatus of the present invention, it can be remarkably improved to about 1100 lines / h. Further, the cot 20 is easily positioned by the flange portion 22 coming into contact with the surface of the rotating base 13, and the misalignment is prevented by applying its own weight, and the occurrence rate of defective products is suppressed. Furthermore, in this embodiment, since the through hole 15 into which the cot 20 is inserted is formed with an inner diameter that is substantially the same as the outer diameter of the cot 20, the positional deviation of the cot 20 can be suppressed during cutting. Accordingly, oblique cutting or the like can be prevented, and the occurrence rate of defective products can be further suppressed.
[0038]
For example, as shown in FIG. 5, detection means 30 is further provided in the vicinity of the surface of the rotary base 13 for detecting the positional deviation of the cot 20, for example, detecting the presence or absence of the flange portion 22 using an optical sensor or the like. You may do it. As a result, when the detection means 30 detects the positional deviation of the cot 20, if the control is performed so as to stop the rotation of the rotary base 13, the generation of defective products can be prevented more reliably and the production can be prevented. Efficiency can be improved reliably.
[0039]
(Embodiment 2)
FIG. 6 is a perspective view of the cot according to the second embodiment.
[0040]
In the first embodiment, the elastic member 3 having a predetermined length is obtained by cutting off both axial ends (23, 24) of the cot 20. However, in the present embodiment, the axial end of the cot 20A is cut off. This is an example of an elastic member having a predetermined length.
[0041]
That is, in the present embodiment, the accuracy of the mold for molding the cot 20A is improved, and as shown in FIG. 6A, the occurrence of burrs near one end in the axial direction, for example, the lower end portion 24A is made quality. As shown in FIG. 6 (b), the other end side of the cylindrical portion 21 of the cot 20A, for example, only the upper end portion 23B, is cut off, so that the elastic member 3 having a predetermined length is obtained. did.
[0042]
In this way, by improving the accuracy of the molding die, suppressing the occurrence of burrs at one end of the cot 20A in the axial direction, and forming the elastic member 3 by cutting off only the other end, Productivity can be further improved, and costs can be reduced.
[0043]
In the present embodiment, the flange portion 22 is provided on the upper end portion 23A of the cot 20A. However, the present invention is not limited to this. For example, as shown in FIG. 7, the cot 20B is not provided with the flange portion 23A. Also good.
[0044]
As described above, regardless of the shape of the cot, by cutting off at least one end portion in the axial direction, an elastic member having a predetermined length can be easily formed and burrs can be reliably removed, thereby improving productivity. be able to.
[0045]
In addition, the cutting device which cut | disconnects such cots 20A and 20B can also be set as the structure similar to the above-mentioned embodiment, or is not limited to this structure. For example, it is sufficient if the slits 16B are provided in the vicinity of one end in the axial direction of the cots 20A and 20B, for example, only in the vicinity of the upper end (see FIG. 3). In particular, when cutting the cot 20B that does not form the flange portion, if the fixing plate 13a is provided on the lower surface side of the rotary base 13, when the cot 20B is inserted into the through hole 15, the lower side of the cot 20B. The end surface is easily positioned by contacting the fixed plate 13a.
[0046]
In addition, the extraction method of the elastic member 3 etc. when the fixing plate 13a is provided on the rotary base 13 is not particularly limited. For example, the fixing plate 13a may be removable, the fixing plate 13a may be removed and dropped from the lower opening of the through hole 15, or a communication with a predetermined size communicating with the through hole 15 to the fixing plate 13a. A hole may be provided and protruded with a rod-like member or the like through this communication hole. Further, for example, it may be picked out by a predetermined jig or the like from the opening above the through hole 15.
[0047]
【The invention's effect】
As described above, according to the present invention, it is possible to reliably and easily form a good elastic member for a transport roll without burrs, to significantly improve productivity, and to form a transport roll with improved quality. be able to. Further, the positional deviation of the cot is suppressed at the time of cutting, so that the occurrence of defective products can be remarkably reduced and the cost can be reduced.
[Brief description of the drawings]
FIGS. 1A and 1B are a plan view and a cross-sectional view illustrating an outline of a cutting device for a conveyance roll elastic member according to a first embodiment of the present invention. FIGS.
FIG. 2 is a perspective view showing an elastic member for a transport roll according to Embodiment 1 of the present invention.
FIG. 3 is a cross-sectional view of an essential part showing an outline of a cutting device for an elastic member for a transport roll according to Embodiment 1 of the present invention.
FIG. 4 is a cross-sectional view showing a cutting process using the cutting apparatus according to Embodiment 1 of the present invention.
FIG. 5 is a plan view showing another example of the cutting device for the elastic member for the transport roll of the present invention.
FIG. 6 is a perspective view showing an outline of an elastic member for a transport roll according to Embodiment 2 of the present invention.
FIG. 7 is a perspective view showing another example of an elastic member for a transport roll according to Embodiment 2 of the present invention.
FIG. 8 is a cross-sectional view showing a main part of a cutting device according to Embodiment 2 of the present invention.
FIG. 9 is a schematic diagram illustrating an example of a transport roll.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Apparatus main body 12 Rotating shaft 13 Rotating base 14 Cutting means 15 Through-hole 16 Slit part 17 Cutting tool 18 Holding part 19 Bar-shaped member 20 Cotto

Claims (6)

In the manufacturing method of the elastic member for the transport roll that is fitted to the outer peripheral surface of the core roll and constitutes the transport roll,
A first step of forming a cylindrical member longer than a predetermined length and having a flange portion at one end thereof, and the cylindrical member is inserted and held in a holding hole of a rotating base that is rotatably held; At least the flange portion of the cylindrical member is formed by fixing and holding a cutter for cutting the cylindrical member in a slit provided in a radial direction from the outer peripheral surface of the cylindrical member and rotating the rotating base And a second step of removing burrs at the end by cutting the vicinity of the side end by abutting against the blade to a predetermined length. Production method.   2. The method for manufacturing an elastic member for a transport roll according to claim 1, wherein in the second step, the vicinity of both ends in the axial direction of the cylindrical member is brought into contact with a cutter and cut into a predetermined length. 3. . By cutting at least the vicinity of the flange portion side end portion of the elastic member for the transport roll including the cylindrical portion and a flange portion provided on one end portion side of the cylindrical portion, the transport roll is formed to have a predetermined length. In the cutting device for the elastic member for the transport roll that removes the burr at the end of the elastic member for use,
A slit provided in the radial direction from the outer peripheral end surface is provided in the entire circumferential direction, and a holding hole into which the cylindrical portion of the elastic member for the transport roll is inserted and held so as to intersect with the slit and held rotatably. A rotating base, a driving means for rotating the rotating base, and a cutting means for fixing and holding a blade for cutting the elastic member for the transport roll in a state of being inserted into each slit of the rotating base. An apparatus for cutting an elastic member for a transport roll. In claim 3, the inner diameter of the holding hole, the cutting device of the elastic member for conveying roll, characterized in that the outer diameter and the same diameter of the cylindrical portion. 5. The apparatus for cutting an elastic member for a transport roll according to claim 3 or 4 , wherein the slit is provided at two places in the thickness direction of the rotating base, and the elastic member is cut at two places. The elastic member for a transport roll according to any one of claims 3 to 5 , further comprising a detecting unit that detects a protrusion of the flange portion of the elastic member held on the rotating base by a predetermined amount or more. Cutting device.

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