JPH0543081A - Assembling method for roller shaft and device therefor - Google Patents

Abstract

PURPOSE:To provide a new assembling method and an assembling device for a roller shaft of a paper feeding roller for OA equipment. CONSTITUTION:Many shafts 2, on which plural rollers 1 are previously fitted, are supplied one by one on a roller-receiving jig 5, then the rollers 1 are pushed to the roller-receiving jig 5 with a roller pushing plate 6, and subsequently an adhesive is droppedly supplied to the roller fitting positions of the shafts 2. After that, the shafts 2 are sent in one direction to a given stop position while rotating to fix the roller 1 and the shaft 2 with the adhesive, and after a given time elapses, the fixing of the roller 1 and the shaft 2 so far is released to carry out the assembling-completed roller shaft 2 to the outside of a system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a roller shaft and a device therefor, and more particularly, to a sheet feeding roller used by being incorporated in an OA equipment, for example.
That is, a plurality of rollers that are intermittently attached to the shaft and a roller that fixes the shaft with an adhesive.
TECHNICAL FIELD The present invention relates to a shaft assembling method and an apparatus thereof.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view for explaining an assembling method when a plurality of rollers 1a-1d are intermittently mounted on a shaft 2 using a conventional device.

That is, in the prior art, first, the rollers 1a to 1d shown in FIG. 4 are inserted into the shaft 2, the adhesive 3 is dropped onto the shaft 2, and then the shaft receiving plate 4A of the assembly jig 4 is used.
On the other hand, the reference end surface 2A of the shaft 2 is pressed.

Then, the rollers 1a to 1d are rotated around the shaft 2 as a central axis, and the adhesive 3 is applied to the outer circumference of the shaft 2 and the inner circumferences of the rollers 1a to 1d, while the rollers 1a to 1d are assembled. Roller receiving plates 4a to 4d of No. 4 and the rollers 1a to 1 for the shaft 2 respectively.
After the positioning of d, the adhesive 3 is left to stand until the adhesive 3 hardens and the rollers 1a to 1d and the shaft 2 are fixed to each other. Conventionally, all the above-mentioned operations are performed manually.

A conventional technique for intermittently mounting a plurality of rollers on a shaft is not limited to the above, but is disclosed in, for example, Japanese Patent Laid-Open No.
It is also described in Japanese Patent Laid-Open No. 5-11832.

[0006]

The procedure for intermittently mounting the plurality of rollers 1a to 1d on the shaft 2 using the conventional apparatus shown in FIG. 4 is as described above.
In the conventional case, as described above, since the assembly of the roller and the shaft is all performed manually, the difference in the amount of adhesive applied and the amount of rotation of the rollers 1a to 1d on the shaft 2 may be different. Variation is likely to occur,
As a result, the fixing force between the rollers 1a to 1d and the shaft 2 tends to vary.

More specifically, the fixing force between the sheet feed roller and the shaft, which is used by being incorporated in an OA equipment, is specified as a product standard of 20 kg · cm or more. When the assembly of the shaft is performed manually, that is, when the fixing force between the roller and the shaft varies and the fixing force between the both is less than 20 kg · cm, the product is defective.

On the other hand, the fact that the roller shaft is entirely assembled by hand also causes an increase in manufacturing cost.

An object of the present invention is to bond a roller shaft represented by a sheet feeding roller built in an office automation equipment, that is, a plurality of rollers intermittently mounted on the shaft and the shaft with an adhesive. To provide an unprecedented new method of assembling a roller shaft and a device therefor, which can automatically fix the same to achieve uniform quality of this kind of product and reduce the manufacturing cost. is there.

[0010]

The object is to provide a method of assembling a roller shaft in which a plurality of rollers are intermittently mounted on a shaft, wherein a plurality of shafts each having the plurality of rollers pre-inserted are provided one by one. It is supplied onto the roller receiving jig, and then the roller is pressed against the roller receiving jig by the roller pressing plate, and then the adhesive is dropped and supplied to the roller mounting position of the shaft, and then the shaft is rotated to a predetermined position. The roller and shaft are fed in one direction to the stop position, and the roller and shaft are fixed together with an adhesive, and after a lapse of a predetermined time, the restraint of the roller and shaft that had been made up to that point is released, and the assembled shaft with roller is carried out of the system. It is achieved by doing.

The method of assembling the roller shaft includes means for placing a large number of shafts into which a plurality of rollers have been inserted in advance, and a roller receiving jig for supplying the large number of shafts one by one. A roller pressing plate for pressing the roller against a roller receiving jig, an adhesive supply device for dripping the adhesive to the roller mounting position of the shaft, and a means for feeding the roller in one direction to a predetermined stop position while rotating the shaft. , A timer for measuring the time required for fixing the roller and the shaft, and after the timer has finished counting and the roller receiving jig and the roller pressing plate have returned to their initial positions, the assembled shaft with roller is chucked. And a manipulator that is carried out to the outside of the system.

[0012]

According to the present invention, however, when intermittently mounting a plurality of rollers, such as a sheet feeding roller used by being incorporated in an OA equipment, on a shaft, this kind of work which has conventionally been performed manually is performed. It can be automated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment shown in FIGS. 1 to 3. FIG. 1 is a perspective view showing the overall construction of a roller / shaft assembly apparatus suitable for carrying out the method of the present invention. Is.

In FIG. 1, a large number of shafts 2 into which rollers 1 (three in the illustrated embodiment) are inserted in advance are
It is mounted on the guide rail 13.

As the escapement 14 rises, the large number of shafts 2 are supplied one by one onto the roller receiving jig 5.

Next, after the roller push plate 6 is lifted, the cylinder 6a is operated and the roller 1 inserted into the shaft 2 is moved.
Is pressed against the roller receiving jig 5 via the cylinder 6a.

After that, the adhesive supply device 8 attached to the XY table 7 drops and supplies the adhesive to the roller attachment position of the shaft 2.

In the illustrated embodiment, since three rollers 1 are attached to the shaft 2, the adhesive is dripped and supplied to the shaft 3 at three required places.

Further, the mounting position data of the roller 1 is programmed in the XY table 7 in advance.

Returning to the explanation of the operation of FIG. 1, the shaft pushing portion 9
The shaft 2 is moved forward by the cylinder 9b while rotating the rotary motor 9a. That is, the shaft 2 is pressed against the shaft receiving portion 10 while rotating the shaft 2.

When the shaft 2 comes into contact with the stopper 10a of the shaft receiving portion 10 to bring the roller 1 and the shaft 2 into a predetermined positional relationship, the rotary motor 9a stops.

While the roller 1 and the shaft 2 are fixed by the adhesive, the roller pressing plate 6 and the shaft pressing portion 9 hold the roller 1 and the shaft 2.

After a predetermined time required for fixing the roller 1 and the shaft 2 to each other, the roller pressing plate 6 retracts to the initial position and the shaft pressing portion 9 also retracts.

On the other hand, the manipulator 11 is replaced by the cylinder 11
It advances to the roller receiving jig 5 side through a, and the manipulator 1
The chuck 11b attached to No. 1 moves down to grip the shaft 2 with rollers that has been assembled.

After that, when the chuck 11b is raised to a predetermined position, the cylinder 11a is retracted to the initial position, and the assembled shaft 2 with rollers is stocked on the stock rail 11c.

FIG. 2 is a partially cutaway front view showing an enlarged shaft pressing portion indicated by reference numeral 9 in FIG. In FIG. 2, an output shaft 9c of a rotary motor 9a that applies a rotational force to the shaft 2
Is connected to a rotating shaft 9f supported by a bearing 9e via a shaft coupling 9d.

The base 9g is mounted on the straight-moving bearing 9h, and is moved forward and backward by the cylinder 9b using the straight-moving bearing rail 9i as a guide.

The contact portion of the rotating shaft 9f with the shaft 2 is formed in a female taper shape.

FIG. 3 is a partially cutaway front view showing an enlarged shaft receiving portion indicated by reference numeral 10 in FIG. 1. The details thereof will be described with reference to FIGS. 1 and 2 and based on FIG. explain.

When the shaft 2 pushed by the shaft pushing portion 9 hits the receiving shaft 10a, the reaction force of the spring 10b increases the surface pressure of the contact surface 10c with the shaft 2 and constitutes a part of the shaft pushing portion 9. The rotational force of the rotary motor 9a is transmitted to the shaft 2 to rotate the shaft 2, and the adhesive 3 is evenly applied to the inner circumference of the roller 1 and the outer circumference of the shaft 2.

Subsequently, when the shaft 2 is further pushed by the shaft pushing portion 9, the receiving shaft support portion 10e hits the stopper 10d, the forward movement of the shaft 2 is stopped, and the shaft is held by the roller receiving jig 5 and the roller pushing plate 6. The positioning of the roller 1 with respect to the shaft 2 thus completed is completed.

After that, when the lapse of the fixing time of the adhesive 3 is detected by the timing of the electric timer, the roller pressing plate 6 is retracted to the initial position, and the shaft pressing portion 9 is also retracted. As described above, when the chuck 11b attached to the manipulator 11 grips the assembled shaft with roller 2 and then the chuck 11b moves up to a predetermined position, the cylinder 11a retracts and the assembled shaft with roller 2 is stocked. Stock on rail 11c.

[0033]

The present invention is as described above. According to the present invention, when a plurality of rollers intermittently mounted on the shaft and the shaft are fixed by an adhesive,
The sticking is done automatically, and when this kind of work is all manually performed, it is easy to cause variations due to individual differences in the amount of adhesive applied, the amount of rotation of the roller on the shaft, etc. As a result, the sticking force between the roller and the shaft is likely to vary, and it is difficult to achieve uniform product quality, and moreover, compared to the case where all assembly of this kind of roller and shaft is done manually. The manufacturing cost of the product can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a roller / shaft assembly apparatus suitable for carrying out the method of the present invention.

FIG. 2 is a partially cutaway front view showing an enlarged shaft pushing portion indicated by reference numeral 9 in FIG.

3 is a partially cutaway front view showing an enlarged shaft receiving portion indicated by reference numeral 10 in FIG.

FIG. 4 shows a plurality of rollers 1a to 1d using a conventional device.
It is a perspective view explaining the assembling method when mounting | wearing the shaft 2 intermittently.

[Explanation of symbols]

 1 Roller 2 Shaft 5 Roller Receiving Jig 6 Roller Push Plate 8 Adhesive Supply Machine 9 Shaft Pushing Unit 10 Shaft Receiving Unit 11 Manipulator

Claims (2)

[Claims] 1. A method of assembling a roller shaft in which a plurality of rollers are intermittently mounted on a shaft, wherein a large number of shafts into which the plurality of rollers have been previously inserted are supplied one by one onto a roller receiving jig. Then, after pressing the roller against the roller receiving jig by the roller pressing plate, the adhesive is dripped and supplied to the roller mounting position of the shaft, and then the shaft is rotated in one direction to a predetermined stop position. A roller characterized in that the roller and the shaft are fixed with an adhesive agent, and after a predetermined time has elapsed, the restraint of the roller and the shaft that has been made up to that point is released, and the assembled shaft with roller is carried out of the system. Shaft assembly method. 2. A means for mounting a large number of shafts into which a plurality of rollers have been previously inserted, a roller receiving jig to which the large number of shafts are supplied one by one, and the rollers.
A roller pressing plate that is pressed against the roller receiving jig, an adhesive supply device that drips and supplies the adhesive to the roller mounting position of the shaft,
A means for sending the unidirectionally to a predetermined stop position while rotating the shaft, a timer for measuring the time required for fixing the roller and the shaft, a roller receiving jig and a roller pressing plate after the timer has finished counting. Roller shaft assembly apparatus including a manipulator for chucking the completed shaft with rollers after the retreat to the initial position and carrying it out of the system.