JP2022135793A - Sleeve attachment jig insertion guide and insertion method of sleeve attachment jig - Google Patents

Abstract

To provide a sleeve attachment jig insertion guide which enables a sleeve attachment jig to be easily fitted into a roller and smoothly inserted into the roller along the roller, and to provide an insertion method of the sleeve attachment jig.MEANS FOR SOLVING THE PROBLEM: A sleeve attachment jig insertion guide 1 is used to guide insertion of a sleeve attachment jig, which is inserted into a roller 50 and slid in an axial direction to attach a sleeve held therein to an outer periphery of the roller 50 while pushing and spreading the sleeve to the radial outer side, into the roller 50. In the sleeve attachment jig insertion guide 1, a body 1A formed with a circular guide hole 1a, into which the roller 50 is inserted through a fine gap δ1, is divided into two parts on a plane S passing through an axis O of the guide hole 1a and divided pieces 1L, 1R, which are the two parts formed by dividing the body 1A, are coupled and integrated in a separable manner. Further, a fitting recessed part 1b is formed concentrically with the guide hole 1a on one axial end surface of the body 1A.SELECTED DRAWING: Figure 2

Description

The present invention relates to a sleeve mounting jig insertion guide for guiding insertion of a sleeve mounting jig into a roller and a method of inserting the sleeve mounting jig into the roller using the same.

For example, in a belt conveyor, the belt is conveyed by rotating rollers, and as a technique for suppressing meandering of this belt, there is a process called crown processing, in which the outer diameter of one part of the roller is made larger than the other part. It has been known. According to such a crowned roller, the meandering of the belt can be suppressed by the characteristic that the belt deviates to the side where the peripheral speed is high due to the partial peripheral speed difference generated in the roller.

By the way, as a method of crowning a roller, there is adopted a method of forming the roller into a drum shape by machining or the like in the process of manufacturing the roller, or processing the entire roller into a trapezoidal shape. ing. Alternatively, as a method other than machining, a method of attaching a cylindrical sleeve whose outer diameter is larger than the outer diameter of the roller to the outer periphery of a straight (same diameter) roller is also adopted.

In the above method of attaching a sleeve to the outer circumference of a roller, a jig is used to attach a sleeve molded from resin such as elastomer to the outer circumference of an inexpensive roller in which press bearings are attached to both axial ends of a pipe by press-fitting or caulking. are used to press fit. For example, Patent Literatures 1 and 2 disclose a roller having a sleeve press-fitted to its outer periphery.

Japanese Utility Model Laid-Open No. 2-022909 JP 2018-158826 A

By the way, in order to press-fit the sleeve onto the outer circumference of the roller, a method of press-fitting a sleeve having an inner diameter smaller than the outer diameter of the roller onto the outer circumference of the roller using a jig is generally used. If the thickness is 2 mm or more, high rigidity can be ensured and it is suitable for press-fitting to a roller, but not only the peripheral speed difference and running noise of the belt increase, but also the belt is likely to wear. Therefore, the thickness of the sleeve is preferably about 1 mm to 1.5 mm.

However, the thin sleeve has a low rigidity and is deformed when it is press-fitted into the roller. For this reason, in the process of inserting the sleeve, it is necessary to use different jigs according to the deformation of the sleeve.

Therefore, the present applicant proposed a sleeve mounting jig for mounting the sleeve on the outer periphery of the roller while expanding the sleeve held inside in the radial direction by being inserted into the roller and sliding in the axial direction. I proposed it earlier (in Japanese Patent Application No. 2020-128679).

However, in the above-described sleeve mounting jig, the inner diameter of the circular hole at the end on the roller insertion side is larger than the outer diameter of the roller, and a relatively large radial gap is formed between the circular hole and the roller. Therefore, there is no means for guiding the sleeve mounting jig relative to the roller when fitting the sleeve mounting jig to the roller. Therefore, it is not easy to fit the sleeve mounting jig to the roller. That is, in some cases, the sleeve mounting jig is greatly tilted with respect to the roller and rattles, making it difficult to smoothly insert the sleeve mounting jig into the roller.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a sleeve mounting jig insertion guide and a sleeve mounting device which enable a sleeve mounting jig to be easily fitted into a roller and smoothly inserted along the roller. To provide a method for inserting a jig.

In order to achieve the above object, the present invention provides a sleeve that is inserted into a roller and slides in the axial direction to expand the sleeve held therein radially outward and attach the sleeve to the outer circumference of the roller. A sleeve mounting jig insertion guide for guiding the insertion of the mounting jig into the roller is arranged on a plane passing through the axis of the guide hole, the main body having a circular guide hole through which the roller is inserted. and the divided pieces of the main body are detachably connected and integrated, and a fitting recess is formed concentrically with the guide hole on one axial end face of the main body. did.

Further, according to the present invention, as a sleeve mounting jig insertion method for inserting the sleeve mounting jig into the roller using the sleeve mounting jig insertion guide, both split pieces of the sleeve mounting jig insertion guide are opened. a first step of connecting and integrating the sleeve mounting jig after sandwiching the sleeve mounting jig from both sides by the split pieces; and a second step of sliding the sleeve mounting jig insertion guide and the sleeve mounting jig along the outer circumference of the roller, and then inserting the sleeve mounting jig into the roller.

According to the present invention, the sleeve mounting jig insertion guide is divided into two pieces, and both divided pieces can be expanded. When fitted, the guide hole of the sleeve mounting jig insertion guide and the fitting recess are arranged concentrically, so that the sleeve mounting jig insertion guide and the sleeve mounting jig are aligned with high accuracy. . Therefore, the sleeve mounting jig is guided by the sleeve mounting jig insertion guide and is easily and smoothly inserted into the roller without backlash. Further, by widening the sleeve mounting jig insertion guide after mounting the sleeve on the roller, the sleeve mounting jig insertion guide and the sleeve mounting jig can be easily separated, leaving the sleeve on the roller. It is possible to remove the sleeve mounting jig insertion guide from the roller while it is still in place.

FIG. 4 is a perspective view of a sleeve attachment jig insertion guide according to the present invention; FIG. 4 is a front view of a sleeve attachment jig insertion guide according to the present invention; FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; FIG. 4 is a plan view of a sleeve attachment jig insertion guide according to the present invention; FIG. 5 is a cross-sectional view taken along line BB of FIG. 4; FIG. 4 is a bottom view of the sleeve attachment jig insertion guide according to the present invention; FIG. 7 is a cross-sectional view taken along line CC of FIG. 6; It is a figure which shows a sleeve, a roller, and these dimensional relationship. It is a side view of a sleeve attachment jig. FIG. 10 is a cross-sectional view taken along line DD of FIG. 9; FIG. 11 is a cross-sectional view taken along line EE of FIG. 10; FIG. 11 is a cross-sectional view taken along line FF of FIG. 10; 4(a) to 4(e) are partial plan views showing a method of inserting a sleeve mounting jig according to the present invention in order of steps. 4(a) to 4(c) are partial cross-sectional views showing, in order of steps, a sleeve mounting method using a sleeve mounting jig. 4(a) to 4(d) are cross-sectional views showing a method for positioning and mounting a sleeve in order of steps.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

[Sleeve mounting jig insertion guide]
First, a sleeve mounting jig insertion guide according to the present invention will be described below with reference to FIGS. 1 to 7. FIG.

FIG. 1 is a perspective view of a sleeve mounting jig insertion guide according to the present invention, FIG. 2 is a front view of the sleeve mounting jig insertion guide, FIG. 3 is a sectional view along line AA of FIG. 2, and FIG. 5 is a cross-sectional view taken along line BB of FIG. 4, FIG. 6 is a bottom view of the same sleeve mounting jig insertion guide, and FIG. 7 is a cross-sectional view taken along line CC of FIG. In the following description, the directions of the arrows shown in FIGS. 1 to 3 will be referred to as "axial direction" and "horizontal direction", respectively.

A sleeve mounting jig insertion guide (hereinafter simply referred to as an "insertion guide") 1 according to the present invention comprises a substantially cylindrical body portion 1A made of resin. has a circular guide hole 1a through which a roller 50 (see FIG. 8), which will be described later, is inserted. Here, the inner diameter φd1 of the guide hole 1a is set slightly larger than the outer diameter φD1 of the roller 50, and as shown in FIGS. A minute gap (clearance) δ1 (=(d1−D1)/2) is formed in the direction. In this embodiment, the minute gap δ1 is set to δ1=0.1 mm.

As shown in FIGS. 1 to 3, on one axial end face (right end face in FIG. 3) of the insertion guide 1, a stepped circular fitting recess 1b having an inner diameter φd2 is concentric with the guide hole 1a. is formed in

By the way, as shown in FIGS. 1 and 2, the body portion 1A of the insertion guide 1 is divided into left and right by a vertical plane (dividing surface) S passing through the axis O of the guide hole 1a. Pieces 1L and 1R are detachably connected and integrated. The structure will be described below.

One (lower side in FIGS. 1 and 2) ends (lower ends) on both sides (upper and lower sides) of the left and right split pieces 1L and 1R sandwiching the guide hole 1a are formed as shown in FIGS. , and a support shaft 3 via a link 2 so as to be rotatable in the direction perpendicular to the axis (horizontal direction in FIG. 2). More specifically, as shown in FIG. 6, rectangular grooves 1c are formed in the width direction central portions of the left and right side portions of the left and right split pieces 1L and 1R with the split surface S at the lower end of the left and right split pieces 1L and 1R interposed therebetween. The link 2 is fitted in these grooves 1c. The left and right ends of the link 2 are connected to the lower ends of the left and right split pieces 1L and 1R by the support shafts 3, respectively. Therefore, the left and right split pieces 1L and 1R can be rotated in the left and right direction around the support shaft 3 to be expanded, as indicated by the dashed line in FIG.

On the other hand, the upper ends of the left and right split pieces 1L and 1R are detachably connected by connecting means constituted by a bolt member 4 and a lever member 5 that are screwed together. Specifically, a linear groove 1d extending in the circumferential direction is formed in the upper end portion of the left split piece 1L, and the head portion 4a of the bolt member 4 is vertically moved by the support shaft 6 in the groove 1d. is rotatably supported on the Here, the bolt member 4 is provided with a male screw portion 4b integrally extending from the head portion 4a.

A horizontally cut notch portion 1e is formed in the upper end portion of the right split piece 1R, and a lever member 5 is installed substantially horizontally along the left-right direction in this notch portion 1e. . Here, as shown in FIG. 5, a female threaded portion 5a is formed at the center of the shaft of the lever member 5, and the male threaded portion 4b of the bolt member 4 is screwed into the female threaded portion 5a. A dial portion 5b is formed at one end of the lever member 5 in the axial direction, and in the state shown in FIGS. The other axial end surface (the left end surface in FIG. 2) presses the stepped portions 1f and 1g of the right split piece 1R to bring the split piece 1R into contact with the left split piece 1L. Further, as shown in FIG. 4, the bolt member 4 and the lever member 5, which constitute the connecting means, are offset from the widthwise center of the insertion guide 1 by ε in the axial direction (lower side in FIG. 4). are placed.

As shown in FIGS. 1 and 2, the left and right divided pieces 1L and 1R are connected and integrated by the bolt member 4 and the lever member 5, which constitute connecting means. 2 and 4 along the male threaded portion 4b of the bolt member 4 to move the lever member 5 in its axial direction. The end faces are separated from the steps 1f and 1g of the right split piece 1R. From this state, when the lever member 5 is rotated in the direction of the arrow (counterclockwise) about the support shaft 6 as indicated by the chain line in FIG. 2, the left and right divided pieces 1L and 1R are disconnected. be. Therefore, from this state, the left and right split pieces 1L and 1R are rotated left and right about the support shaft 3 provided at the lower end thereof as indicated by the chain line in FIG. can be opened.

[Sleeve mounting jig]
Next, the sleeve mounting jig will be described below with reference to FIGS. 8 to 12. FIG.

8 is a diagram showing the sleeve and roller and their dimensional relationship, FIG. 9 is a side view of the sleeve mounting jig, FIG. 10 is a cross-sectional view along the line DD of FIG. 9, and FIG. FIG. 12 is a sectional view taken along line FF of FIG.

The sleeve mounting jig 10 according to the present embodiment has a sleeve made of resin (made of elastomer in the present embodiment) at a distance L from both axial ends of the outer circumference of the metal roller 50 shown in FIG. 40 is for attaching. Adapters 51 are attached to both ends of the roller 50 in the axial direction, and from the center of each adapter 51, a cylindrical protrusion 51a with a small diameter is integrally provided. Here, the outer diameter of the roller 50 is φD1, the inner diameter of the sleeve 40 is φd3, and the outer diameter is φD2.

As will be described later, the sleeve mounting jig 10 pushes the sleeve 40 (see FIG. 8) positioned and held in the sleeve mounting jig 10 radially outward by the rollers 50 (see FIG. 8). A metal cylindrical member to be attached to the outer circumference of the roller 50, the guide member 11, the first ring member 12, the second ring member 13, and the base member 14 are coaxially connected together in the axial direction. It is composed of

The guide member 11 is a cylindrical member that guides the insertion of the roller 50 into the mounting jig 10, and its inner diameter φd4 is set larger than the outer diameter φD1 of the roller 50 shown in FIG. (φd4>φD1). The outer diameter φD3 of the guide member 11 is set substantially equal (actually slightly smaller) than the inner diameter φd2 of the fitting recess 1b formed in the insertion guide 1 (φD3≈φd2).

Circular bolt insertion holes 11a are provided at four locations in the circumferential direction of the guide member 11 at equal angular pitches (90° pitches) in the axial direction (horizontal direction in FIG. 10). .

Further, as shown in FIG. 11, the first ring member 12 is provided with four split pieces 12A which are split into four at an equal angular pitch (90° pitch) in the circumferential direction. A ring-shaped first biasing member 15 such as a garter spring or an O-ring is wound around each of the two fitting grooves 12a formed at regular intervals. The split piece 12A is biased radially inward.

Here, when the sleeve mounting jig 10 is not operated (when the sleeve 40 is not mounted), the four split pieces 12A are in contact with each other in the circumferential direction as indicated by solid lines in FIG. In this state, the first ring member 12 has a circular insertion hole 12b in which the sleeve 40 is inserted and held. The inner diameter φd5 of the insertion hole 12b is set smaller than the outer diameter φD2 (see FIG. 8) of the sleeve 40 (φd5<φD2). Further, as shown in FIG. 11, a long hole 12c which is long in the radial direction is provided through the central portion of each split piece 12A in the axial direction.

Furthermore, as shown in FIG. 12, the second ring member 13 is also provided with four split pieces 13A that are split into four at equal angular pitches (90° pitches) in the circumferential direction. A ring-shaped second biasing member 16 such as a garter spring or an O-ring is wound around the two fitting grooves 13a. energized. Here, when the sleeve mounting jig 10 is not in operation, the four split pieces 13A are in contact with each other in the circumferential direction and are in a reduced diameter state, as indicated by solid lines in FIG. A circular through hole 13 b through which the roller 50 passes is formed in the center of the member 13 . The inner diameter φd6 of the through hole 13b is set smaller than the outer diameter φD1 (see FIG. 8) of the roller 50 (φd6<φD1).

One axial end face of the sleeve 40 inserted and held in the insertion hole 12b of the first ring member 12 as described later abuts against the end face of the second ring member 13 that contacts the end face of the first ring member 12. A positioning stepped portion 13c is formed for contact. Further, as shown in FIG. 12, long holes 13d that are long in the radial direction are axially penetrated through the central portions of the split pieces 13A of the second ring member 13, respectively.

The base member 14 allows passage of the roller 50 when the sleeve 40 is attached, and a circular through hole 14a for allowing the roller 50 to pass through is axially provided in the center of the base member 14. ing. Here, the inner diameter φd7 of the through hole 14a is set slightly larger than the outer diameter φD1 (see FIG. 8) of the roller 50 (φd7>φD1). A minute gap δ2 (clearance) (=(d7−D1)/2) is formed in the direction. In addition, in the present embodiment, the minute gap δ2 is set to 0.1 mm.

Then, as shown in FIG. 10, four points in the circumferential direction (long hole 12c of first ring member 12 and second ring member 13) on one axial end face of base member 14 that abuts on the end face of second ring member 13. Screw holes 14b are formed in four places corresponding to the long holes 13d and the bolt insertion holes 11a of the guide member 11, respectively.

In the sleeve mounting jig 10, the guide member 11, the first ring member 12, the second ring member 13 and the base member 14 are stacked in this order from the direction in which the roller 50 passes (left side in FIG. 10). Stepped bolts 17, which are respectively inserted into four bolt insertion holes 11a formed in member 11, are inserted into long holes 12c formed in four divided pieces 12A and 13A of first ring member 12 and second ring member 13, respectively. The guide member 11, the first ring member 12, the first ring member 12, and the first ring member 12 are connected by threading the stepped bolts 17 into the four screw holes 14b formed in the base member 14, respectively. 2. The ring member 13 and the base member 14 are coaxially connected together in the axial direction. In the sleeve mounting jig 10 configured as described above, the four split pieces 12A of the first ring member 12 and the four split pieces 13A of the second ring member 13 are formed with long holes 12c and 13d. It can move radially outward within the range of the radial clearance δ (see FIGS. 11 and 12) with the stepped bolt 17 .

[How to insert the sleeve mounting jig]
Next, a method of inserting the sleeve mounting jig 10 into the roller 50 using the insertion guide 1 will be described below with reference to FIG.

FIGS. 13A to 13E are plan views showing a method of inserting the sleeve mounting jig 10 according to the present invention in order of steps.

Insertion of the sleeve mounting jig 10 into the roller 50 is performed through the following first and second steps.

1) First step:
In the first step, the left and right split pieces 1L and 1R of the insertion guide 1 are opened left and right as shown in FIG. The insertion guide 1 and the sleeve mounting jig 10 are connected and integrated by sandwiching the guide member 11 of the sleeve mounting jig 10 from both sides with the mating recesses 1b.

Specifically, from the state in which the left and right divided pieces 1L and 1R of the insertion guide 1 are connected and integrated as shown in FIGS. 2, 4 and 5 along the male screw 4b, one axial end surface of the lever member 5 is separated from the stepped portions 1f and 1g of the split piece 1R. From this state, when the lever member 5 is rotated about the support shaft 6 in the solid line arrow direction (counterclockwise direction) in FIG. By rotating 1L and 1R in the directions of the solid arrows in FIG. 2 around the support shaft 3, the left and right split pieces 1L and 1R can be opened as indicated by the chain lines in FIG.

When the left and right split pieces 1L and 1R of the insertion guide 1 are opened as described above, the guide member 11 of the sleeve mounting jig 10 is moved by the half-split fitting recesses 1b formed in these split pieces 1L and 1R. are sandwiched from both sides, and the split pieces 1L and 1R are rotated about the support shaft 3 in the direction of the broken line arrow in FIG. (clockwise) to return it to the original horizontal position indicated by the solid line. Then, when the lever member 5 is rotated from this state, the lever member 5 slides along the male screw portion 4b of the bolt member 4, and the axial end surface of the lever member 5 abuts against the stepped portions 1f and 1g of the split piece 1R. Since the piece 1R presses the other split piece 1L, the left and right split pieces 1L and 1R are connected and integrated as shown in FIGS. In addition, when the insertion guide 1 and the sleeve mounting jig 10 are connected and integrated, a slight gap is formed in the dividing surface S of the insertion guide 1, and the fitting concave portion 1b of the insertion guide 1 does not allow the sleeve mounting. The guide member 11 of the jig 10 can be securely clamped. Further, in this embodiment, as shown in FIG. 4, the axial centers of the bolt member 4 and the lever member 5 constituting the connecting means are axially aligned with respect to the width center of the insertion guide 1 (in the direction of the sleeve mounting jig 10). , the fitting recess 1b of the insertion guide 1 and the guide member 11 of the sleeve mounting jig 10 are more closely fitted.

With the insertion guide 1 sandwiching the guide member 11 of the sleeve mounting jig 10 as described above, the insertion guide 1 and the sleeve mounting jig 10 are connected and integrated. Since the hole 1a and the fitting recess 1b are formed concentrically, the guide hole 1a and the through hole 14a formed in the base member 14 of the sleeve mounting jig 10 are arranged coaxially, and the two are aligned. is done.

2) Second step:
In the second step, as shown in FIG. 13(c), the guide hole 1a of the insertion guide 1 connected and integrated with the sleeve mounting jig 10 is fitted around the outer periphery of the roller 50. Then, as shown in FIG. Then, as shown in FIG. 13(d), the insertion guide 1, in which the guide hole 1a is fitted on the outer periphery of the roller 50, is moved along the roller 50 along with the sleeve mounting jig 10 in the direction of the arrow in the drawing. The tool 10 is guided by the insertion guide 1 and is easily and smoothly inserted into the outer periphery of the roller 50 without backlash.

By the way, when the sleeve mounting jig 10 is smoothly inserted into the roller 50 by the insertion guide 1 through the above first and second steps, the insertion guide 1 and the sleeve mounting jig 10 slide along the roller 50. By doing so, the sleeve 40 held inside the sleeve mounting jig 10 is mounted in a state of being accurately positioned at a predetermined position on the outer circumference of the roller 50 in the following manner. A method of attaching the sleeve 40 to the roller 50 using the sleeve attachment jig 10 will be described below with reference to FIG.

14(a) to 14(c) are partial cross-sectional views showing a method of attaching the sleeve to the roller in order of steps. 14(a), one axial end surface of the sleeve 40 is engaged with the end outer peripheral edge of the adapter 51 attached to one axial end of the roller 50. As shown in FIG. Here, since the outer peripheral edge of the adapter 51 is chamfered (R-processed) into an arc curved surface, the first ring member 12 is attached to the four split pieces 12A by the biasing force of the first biasing member 15. A radially outward force acts to push and spread radially outward against the pressure.

When the sleeve mounting jig 10 further slides along the roller 50 from the above state, the sleeve 40 is expanded radially outward (in the direction of the arrow in FIG. 11) by the roller 50, as shown in FIG. 14(b). Then, when the sleeve mounting jig 10 is pushed further along the roller 50, the sleeve 40 is easily attached (press-fitted) to the outer periphery of the roller 50 as shown in FIG. 14(c). That is, the four split pieces 12A of the first ring member 12 move radially outward against the biasing force of the first biasing member 15 as indicated by the chain lines in FIG. For expansion, the sleeve 40 is easily expanded by the roller 50 and attached to the outer circumference of the roller 50 . At this time, since the sleeve 40 is in contact with the positioning stepped portion 13c of the second ring member 13, it does not slide axially with respect to the sleeve mounting jig 10. As shown in FIG.

After that, the sleeve mounting jig 10 is further slid along the roller 50, and as shown in FIG. The four split pieces 13A of the second ring member 13 move radially outward against the biasing force of the second biasing member 16 as indicated by the dashed lines in FIG. That is, the four split pieces 13A are spread by the rollers 50 to enlarge the diameter of the through hole 13b of the second ring member 13, so that the sleeve mounting jig 10 is allowed to slide along the rollers 50. As shown in FIG.

13(e), the insertion guide 1 is removed from the roller 50 when the sleeve 40 is attached at a predetermined position on the outer periphery of the roller 50 as described above. The insertion guide 1 is removed from the roller 50 by rotating the left and right split pieces 1L and 1R around the support shaft 3 to open them, as indicated by the chain lines in FIG. After the sleeve 40 is attached to the roller 50 in this way, the insertion guide 1 is expanded to separate the insertion guide 1 and the sleeve mounting jig 10 easily, leaving the sleeve 40 on the roller 50. , the insertion guide 1 can be removed from the roller 50 .

Since the sleeve mounting jig 10 is made through the above-described first and second steps using the insertion guide 1, the sleeve mounting jig 10 can be easily fitted into the roller 50 and attached to the roller. It can be smoothly inserted along 50.

[How to position and mount the sleeve]
Next, a method for positioning the sleeve 40 on the roller 50 will be described below with reference to FIG.

15(a) to 15(d) are cross-sectional views showing the method of positioning and attaching the sleeves in the order of steps. Hereinafter, as shown in FIG. A description will be given of the case of positioning and mounting at the position of the distance L). Here, as shown in FIG. 8, the inner diameter φd3 of the sleeve 40 is set smaller than the outer diameter φD1 of the roller 50 (φd3<φD1).

In order to position and attach the sleeve 40 to the roller 50, as shown in FIG. 15(a), the lower end of the roller 50 is fitted vertically upward into the circular hole 21a of the holder 21 of the positioning jig 20 which stands vertically. Then, the roller 50 is pushed in until the lower end face hits the positioning stepped portion 21c in the positioning jig 20, and the roller 50 is vertically erected by the positioning jig 20. As shown in FIG.

Next, as shown by the chain line in FIG. 15(a), the sleeve mounting jig 10 in which the sleeve 40 is inserted and held is fitted together with the insertion guide 1 onto the upper end portion of the roller 50 with the insertion guide 1 facing downward. . Here, the sleeve 40 inserted and held in the sleeve mounting jig 10 is accurately positioned in the axial direction with respect to the sleeve mounting jig 10 by coming into contact with the positioning step portion 13 c of the second ring member 13 .

From the above state, the insertion guide 1 and the sleeve mounting jig 10 are pushed in along the outer periphery of the roller 50 until the lower end surfaces thereof abut against the upper end surface of the positioning jig 20 . Then, as shown by the solid line in FIG. 15(a), the sleeve 40 (the portion hidden by the roller 50 is shown by the dotted line) is accurately positioned and attached to the outer periphery of the one axial end (lower end) of the roller 50. .

That is, the sleeve 40 is accurately positioned with respect to the sleeve mounting jig 10 as described above, and the roller 50 to which this sleeve 40 is mounted is aligned with the sleeve mounting jig 10 (sleeve 40) by the positioning jig 20. As a result, the sleeve 40 is accurately positioned and attached to the outer periphery of the roller 50 at one end (lower end) in the axial direction. Specifically, by setting the height h1 of the positioning jig 20 so that the distance from the one axial end face (lower end face) of the roller 50 to the one axial end of the sleeve 40 becomes the target value L, the sleeve 40 is accurately positioned and attached at a position of a distance L from one end face (lower end face) of the roller 50 in the axial direction.

After the sleeve 40 is attached to one end of the outer circumference of the roller 50 as described above, the insertion guide 1 and the sleeve mounting jig 10 are pulled out from the roller 50, and then the positioning adapter is mounted as shown in FIG. 15(b). 30 is passed through roller 50 from its upper end. Then, the positioning adapter 30 is pushed down until its lower end surface hits the upper end surface of the positioning jig 20 . At this time, since the inner circumference of the lower end of the positioning adapter 30 is formed with a tapered surface (not shown) that widens downward, the positioning adapter 30 may interfere with the sleeve 40 already attached to the outer circumference of the roller 50 . do not have. It should be noted that the sleeve 40 may be attached to a predetermined position on the outer circumference of the roller 50 with an adhesive, if necessary.

Then, the positioning adapter 30 is connected to the upper end of the positioning jig 20. At this time, a groove-like fitting stepped portion 30d is formed on the inner circumference of the lower end of the positioning adapter 30, and the inner circumference of the upper end of the positioning jig 20 Since the fitting stepped portion 20d is formed, the positioning adapter 30 and the positioning jig 20 are fitted to each other so that they are connected accurately and reliably.

From the above state, as shown by the chain line in FIG. 15(c), the upper end of the sleeve mounting jig 10 in which another sleeve 40 is inserted and held and the insertion guide 1 are exposed above the positioning adapter 30 of the roller 50. 15(d). , Through the same process as described above (see FIGS. 14A to 14C), another sleeve 40 is accurately positioned at a predetermined position on the outer periphery of the upper end of the roller 50 (at a distance L from the upper end surface of the roller 50). installed. At this time, if an adhesive is used to attach the sleeve 40 , the overflowing adhesive is accommodated in the groove 30 b formed on the inner periphery of the upper end of the positioning adapter 30 .

Here, the height h2 of the positioning adapter 30 is set to a value such that the distance between the axial end surface of the sleeve 40 and the upper end surface of the roller 50 is L, as shown in FIG. 15(d).

According to the positioning and mounting method described above, the sleeve 40 is inserted and held in the sleeve mounting jig 10 in a positioned state. As a result, the two sleeves 40 are attached to the outer circumferences of the roller 50 at both ends in the axial direction while being accurately positioned with respect to the roller 50 in the axial direction.

By the way, the method of attaching two sleeves 40 to the outer periphery of both axial ends of the roller 50 has been described above. can be positioned and attached to

In the example shown in FIG. 15, the sleeve 40 is positioned and attached to the roller 50 while the insertion guide 1 is attached to the outer circumference of the roller 50. You may make it position and attach to.

It should be noted that the present invention is not limited in application to the embodiments described above, and that various modifications are possible within the scope of the technical ideas described in the scope of claims, the specification, and the drawings. is of course.

1 Sleeve mounting jig insertion guide (insertion guide)
1A Body portion of sleeve mounting jig insertion guide 1L, 1R Split piece of sleeve mounting jig insertion guide 1a Guide hole of body portion 1b Fitting recess of body portion 2 Link 3 Support shaft 4 Bolt member (connecting means)
4a Head of bolt member 4b Male threaded portion of bolt member 5 Lever member (connecting means)
5a Female screw portion of lever member 6 Support shaft 10 Sleeve mounting jig 40 Sleeve 50 Roller S Parting surface ε Offset amount of connecting means

Claims (5)

Guides the insertion into the roller of a sleeve mounting jig that attaches the sleeve to the outer periphery of the roller while expanding the sleeve held therein radially outward by being inserted into the roller and sliding in the axial direction. A sleeve mounting jig insertion guide for
dividing a main body having a circular guide hole through which the roller is inserted into two along a plane passing through the axis of the guide hole;
The two divided pieces of the main body are decomposably connected and integrated with each other,
A sleeve mounting jig insertion guide configured by forming a fitting recess concentrically with the guide hole in one axial end face of the main body. 2. The sleeve mounting jig insertion guide according to claim 1, further comprising connecting means rotatably supported by one of said split pieces and connecting said split pieces detachably. The connecting means includes a bolt member arranged in an axis-perpendicular direction and a lever member screwed into the bolt member,
the bolt member is pivotally supported at one end of one of the split pieces so as to be rotatable in a direction perpendicular to the axis;
3. The sleeve mounting jig insertion according to claim 2, wherein the lever member slides in the direction perpendicular to the axis when rotated, and one axial end face of the lever member presses the other split piece to connect both split pieces. guide. 4. The sleeve mounting jig insertion guide according to claim 2, wherein said connecting means is arranged at a position axially offset by a predetermined amount with respect to the width center of said main body. A sleeve mounting jig insertion method for inserting the sleeve mounting jig into the roller using the sleeve mounting jig insertion guide according to any one of claims 1 to 4,
a first step of opening both split pieces of the sleeve attachment jig insertion guide, sandwiching the sleeve attachment jig from both sides by the split pieces, and then connecting and integrating both split pieces;
a second step of fitting the guide hole of the sleeve mounting jig insertion guide to the outer circumference of the roller and sliding the sleeve mounting jig insertion guide and the sleeve mounting jig along the outer circumference of the roller;
and inserting the sleeve mounting jig into the roller.

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