JPH06144546A - Annular elastic body aligning device - Google Patents

Abstract

PURPOSE:To enable the completion of alignment of annular elastic bodies faster than an aligning device, in the machinization of aligning work of the annular elastic bodies in which an aligning device of annular elastic bodies such as packings has been used. CONSTITUTION:An annular elastic body aligning device is provided with a driving shaft 1 having a cam mechanism, a supporting shaft 2 that is rotatably supported in parallel with the driving shaft 1 and to which an annular elastic body P to be aligned is bridged between the driving shaft 1 and itself, a motor 8 for turning the driving shaft 1, and an auxiliary shaft 3 that is rotatably supported in the position opposite to the supporting shaft 2 and that is elastically supported in the direction to which the supporting shaft 2 is brought into contact for pressing the annular elastic body P group from the outside. The auxiliary shaft 3 is preferably reciprocatedly driven by a driving mechanism and is provided so as to be capable of being brought into contact with or separated from the annular elastic body P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aligns a large number of irregular ring-shaped elastic bodies when a ring-shaped elastic body such as a packing (O-ring) is incorporated into a device for the purpose of sealing or the like. The present invention relates to a ring-shaped elastic body aligning device used for this purpose.

[0002]

2. Description of the Related Art A ring-shaped packing incorporated in a device for sealing or the like is made of a material having a soft elasticity such as rubber, and usually a large number of packings are intertwined with each other to be in an interlaced state. For this reason, when this is assembled into a device or the like, it must be manually separated and taken out one by one using tweezers, and since the shape is small, it takes time and labor to assemble the packing. The work involved was very troublesome.

In order to solve this problem, conventionally,
For example, a large number of packings are randomly mounted in advance on a round bar-shaped packing alignment jig, and this jig is mounted on a rotary shaft erected on a rotary table to rotate the jig. The packings that were attached to and were rotating were manually moved up and down like a squeeze to align them in order. However, at this stage, packing was arranged completely by hand, and packing was manually carried out.

Under such circumstances, the applicant of the present invention first disclosed in Japanese Patent Application No. 4-
No. 60523 proposes an aligning device for a ring-shaped elastic body.

[0005]

However, the ring annular elastic aligning device proposed in Japanese Patent Application No. 4-60523 has a problem that it takes a long time to align the ring annular elastics. It remained.

Therefore, an object of the present invention is to complete the alignment of the ring-shaped elastic bodies faster than the conventional alignment device in the mechanization of the alignment work of the ring-shaped elastic bodies using the ring-shaped elastic body alignment device such as packing. With the goal.

[0007]

In order to achieve the above object, the ring-shaped elastic body aligning device of the present invention includes a drive shaft having a cam mechanism, and a rotatably supported parallel drive shaft. A support shaft around which a ring-shaped elastic body to be aligned is hung, a motor that rotates the drive shaft, and a ring-shaped elastic body group that is rotatably supported at a position that can face the support shaft and that presses the ring-shaped elastic body group from the outside. However, the auxiliary shaft is elastically supported in the direction of contact with the support shaft. This auxiliary shaft is preferably
It is provided so as to be moved back and forth by a drive mechanism so as to be able to come into contact with and separate from the annular annular elastic body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the preferred embodiments shown in the accompanying drawings.

FIG. 1 shows an embodiment of the present invention. A flat plate-shaped table 4 is fixed on a support (not shown). On the upper surface of the table 4, a cylindrical bearing holder 5 having a flange portion in a bearing holder mounting hole portion 4a provided in the table 4 is vertically provided. The bearing holder 5 is fixed to the table 4 with a bolt via a flange portion.

In the drive shaft 1 having a cam mechanism, a rotation center shaft 1a of the drive shaft 1 is mounted on a bearing holder 5 and hung vertically on an upper surface of a table 4. Two bearings 6a and 6b are fitted vertically between the bearing holder 5 and the rotation center shaft 1a of the drive shaft 1, so that the rotation center shaft portion 1a of the drive shaft 1 can smoothly rotate. The drive shaft 1 is vertically supported by bearings 6a and 6b in a bearing holder 5 by collars 7a and 7b attached to a rotation center shaft portion 1a of the drive shaft 1 with a set screw. The cam portion 1b of the drive shaft 1 is provided in a range facing a support shaft 2 described later.

In this embodiment, the cam portion 1b of the drive shaft 1 has a round bar shape, and is attached to the rotary shaft center portion 1a of the drive shaft 1 of the round bar by welding so as to have a dulled cross section. However, it goes without saying that the rotation center shaft portion 1a and the cam portion 1b may be integrally formed.

A motor 8 which is means for rotating the drive shaft 1.
Is fixed to the lower surface of the table 4 by a bracket 9. A pinion 10 is attached to an output shaft 8a of the motor 8, and the pinion 10 is a lower end portion 1c of the drive shaft 1.
It meshes with the gear 11 attached to the. Therefore, the rotation of the motor 8 depends on the motor output shaft 8a and the pinion 1
0, transmitted to the drive shaft 1 via the gear 11.

The support shaft 2 is provided in parallel with the drive shaft 1. To attach the support shaft 2 to the table 4, the shaft portion 2a of the support shaft 2 penetrates the support shaft attachment hole portion 4b provided in the table 4, and the screw 2b provided on the shaft portion 2a of the support shaft 2 is used. It is attached with nuts. The support shaft 2 is rotatably supported, but in this embodiment, it is the collar portion 2c of the support shaft 2 that freely rotates, and the upper and lower ends of the shaft portion 2a of the support shaft 2 and the support shaft 2 are supported. The collar portion 2c of the support shaft 2 is received by inserting the bearings 12a and 12b between the collar portion 2c and the collar portion 2c. The bearings 12a and 12b at the upper and lower ends of the shaft portion 2a of the support shaft 2 are the shaft portion 2a of the support shaft 2.
Set screw (not shown) with cap 13 at the upper end of
And is supported by a collar 14 from the table 4 at the lower end.

The auxiliary shaft 3 is rotatably supported by a frame body 18, and the frame body 18 is a movable body 15a of a rodless cylinder with a guide 15 installed on the upper surface of the table 4.
It is attached to a bracket 16 attached above so as to be movable in the radial direction with respect to the support shaft 2. A spring 17 is interposed between the bracket 16 and the frame 18 so that the auxiliary shaft 3 elastically presses the packing P of the support shaft 2 when the moving body 15a approaches the support shaft 2. Further, when the moving body 15 a moves to the opposite side of the support shaft 2, the auxiliary shaft 3 is sufficiently separated from the support shaft 2.

FIG. 2 is a top view of this embodiment shown in FIG. This figure shows a state in which the auxiliary shaft 3 approaches the support shaft 2 and is elastically pressed.

Next, the operation of this embodiment will be described. A large number of ring-shaped packings P to be aligned are randomly mounted between the drive shaft 1 and the support shaft 2. At this time, the packing P is laid between the drive shaft 1 and the support shaft 2 in a disordered state. When the start switch (not shown) is turned on and the motor 8 is rotated, the drive shaft 1 rotates, and the cam portion 1b of the drive shaft 1 rotates about the rotation center shaft portion 1a of the drive shaft 1. Due to the rotation of the cam portion 1b of the drive shaft 1, the packing P undergoes an expanding / contracting rotary motion as shown in FIG. 4, and gradually unravels while rotating around the drive shaft 1 and the support shaft 2. Then, the alignment is completed by continuing the rotation of the drive shaft 1 described above.

At the start of the alignment work, as shown in FIG. 3A, the auxiliary shaft 3 has the packing P piled up around the support shaft 2 due to the elastic force of the spring 17 (see FIG. 1). It works to push in a single row. Packing P
When the force is applied to the support shaft 2 from the auxiliary shaft 3, it will be aligned faster than it would otherwise be. The state in which the alignment is completed is shown in FIG.
The spring 17 provided in the state of FIG.
(See FIG. 1) is fully extended, and the auxiliary shaft 3 does not apply a pressing force to the packing P that has been aligned with the support shaft 2.

[0018]

[Embodiment] Regarding the annular annular elastic aligning device, the drive shaft 1, the gear 11 of the drive shaft lower end 1c, the drive shaft rotation support mechanism, the support shaft 2 and the rotation support mechanism of the device can be intermittently rotated. Configured index table (not shown)
Set up several places in Then, in one station, the auxiliary shaft 3, the drive device therefor, and the motor 8 for rotating the drive shaft 1 and the pinion 10 of the output shaft 8a of the motor 8 are provided. Therefore, if the drive shaft 1 and the support shaft 2 that are intermittently rotated come to the station, and a large number of randomly packed packings P are aligned as described above, a simple structure is obtained. It is possible to further improve the cycle time in the ring annular elastic aligning device.

[0019]

As described above, according to the present invention, a large number of ring-shaped elastic bodies such as packings, which are intended to be aligned between the drive shaft and the support shaft, are randomly mounted and rotated, so that The ring-shaped elastic bodies are sequentially arranged. Further, the provision of the auxiliary shaft forcibly breaks the conventional alignment of the mountain-like annular annular body, thereby reducing the alignment time. Therefore, the cycle time can be expected to be increased in the mechanization of the work of incorporating the annular annular elastic body, which contributes to the efficiency of the assembly process.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a main part of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3A is a partial front view showing a state where the auxiliary shaft presses the mountain-shaped annular elastic body at the start of alignment, and FIG. 3B shows a partial front view at the end of alignment.

FIG. 4 is a cross-sectional view showing an expanded and contracted state of the ring-shaped elastic body that is stretched over both the drive shaft, the support shaft, and both shafts when the ring-shaped elastic body is aligned.

[Simple explanation of symbols]

 1 Drive shaft 2 Support shaft 3 Auxiliary shaft 8 Motor 15 Rodless cylinder with guide P Packing (ring-shaped elastic body)

Claims (2)

[Claims] 1. A drive shaft having a cam mechanism, a motor for rotating the drive shaft, and a ring-shaped elastic body group that is rotatably supported in parallel with the drive shaft and should be aligned with the drive shaft. An auxiliary shaft that is rotatably supported and presses the annular elastic body group from the outside is elastically supported in a direction in contact with the support shaft. A ring-shaped elastic body aligning device. 2. The ring-shaped elastic body aligning device according to claim 1, wherein the auxiliary shaft is driven to move back and forth by a drive mechanism and can be brought into contact with and separated from the ring-shaped elastic body.