JP2698802B2 - Alignment device for annular elastic body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement in which a ring-shaped elastic body such as a packing (O-ring) is incorporated into a device for the purpose of sealing or the like so that packings can be easily taken out of many packings one by one. The present invention relates to a device for aligning an annular elastic body, which is used for separating and separating the same.

[0002]

2. Description of the Related Art A ring-shaped packing to be incorporated into a device for the purpose of sealing or the like is made of a material having soft elasticity such as rubber, and usually a large number of packings are intertwined or interlaced. Therefore, when assembling them into a device or the like, it is necessary to separate them one by one using tweezers by hand, and since the shape is extremely small, it takes time and effort. Was very troublesome.

In order to improve this problem, conventionally,
For example, the following method is adopted. That is,
A large number of packings are randomly mounted in advance on a round bar-shaped packing alignment jig, and this jig is inserted into a rotating shaft erected on a turntable to rotate the jig. Next, the packing mounted on the jig and rotating is shifted by hand manually up and down so as to be sequentially aligned.

[0004]

However, even this improved method is inefficient because it is performed mainly by hand, and is a factor that hinders the automation of the assembly of watches and the like.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the efficiency of the step of assembling the annular elastic body by mechanizing the troublesome work of aligning and separating the annular elastic bodies such as packing.

[0006]

In order to achieve the above object, an alignment apparatus for an annular elastic body according to the present invention comprises a lead shaft having a spiral groove on an outer peripheral surface and rotatably provided on a support base. And a tension shaft provided opposite to the lead shaft, a plurality of annular elastic bodies randomly spanned between the lead shaft and the tension shaft, and lead shaft driving means for rotating and driving the lead shaft. Have.

The tension shaft is provided on a turntable which is driven to rotate independently of the lead shaft with the lead shaft as a center of rotation, and the turntable is provided on a support base or a member fixedly related to the support base. It is configured to be rotationally driven by a certain turntable driving means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of an apparatus for aligning annular elastic bodies to which the present invention is applied. A flat table 2 is fixed on a support 1. At a substantially central portion of the upper surface of the table 2, a cylindrical bearing holder 3 having a flange portion is vertically fitted into a mounting hole 2a provided in the table. The bearing holder 3 is fixed to the table 2 by bolts via a flange portion.

A large gear 4 having a hollow shaft 4a is mounted on the bearing holder 3 with the teeth 4b facing upward.
Two bearings 5 and 5 are inserted vertically between the bearing holder 3 and the large gear 4 so that the large gear 4 rotates smoothly.

A disk-shaped turntable 6 is attached to the upper surface of the large gear 4. The turntable 6 is mounted by fitting a ring-shaped connecting portion formed at the center of the upper surface of the tooth portion 4b of the large gear 4 into a connecting hole provided at the center of the turntable 6 concentric with the connecting portion. The large gear 4 and the turntable are integrally rotatably fixed.

A stepped drive shaft 7 is inserted into the inner diameter portion 4c of the large gear 4 so as to divide the vicinity of the upper end into two steps so as to be thick. The drive shaft 7 is rotatable independently and smoothly from the large gear 4 by bearings 8 fitted to the upper and lower ends of the large gear 4.

In a vertical hole provided at the upper end of the drive shaft 7, a lead shaft 9 having a spiral groove 9a formed in the outer peripheral portion.
Is inserted. The lead shaft 9 has a drive shaft 7 near the lower end.
A flange 9b is formed at a position that determines the depth at which the flange 9b is inserted. The spiral groove 9a is engraved from above the flange 9b to the tip. The pitch of the groove 9a is made narrower at the base and larger at the tip.

A motor 10 as a lead shaft driving means is provided inside the support 1. The motor 10 is fixed to the lower surface of the table 2 by a bracket 11. A pinion 12 is attached to an output shaft 10 a of the motor 10, and the pinion meshes with a gear 13 attached to a lower end of the drive shaft 7. Therefore, the motor 10
Is transmitted to the lead shaft 9 via the output shaft 10a, the pinion 12, the gear 13, and the drive shaft 7, and the lead shaft 9 can rotate independently of the turntable 6.

On the upper surface of the turntable 6, a lead shaft 9 is provided.
Guide rail 14 on a straight line connecting
The slider 15 is provided so as to be able to be guided by the guide rail 14.

On the inner side (left side in the drawing) of the slider 15,
A base 16 having an inverted L-shaped cross section is provided. One end of the base 16 is formed to have a height and a width at which the respective ends are easily engaged when the slider 15 moves, and as shown in FIG. A groove is provided, and the lead shaft 9 is sandwiched by the groove. The front of the groove is formed so as to be widened so that the front end of the slider 15 can be easily engaged. As shown in FIG. 1, the other end of the base 16 that is formed vertically is embedded and fixed in a groove formed on the upper surface of the tar table 6.

As shown in FIG. 2, the slider 15 has a substantially Z-shape in plan view, and a groove (not shown) formed on the lower surface of the horizontal portion 15a on the far side (upper side in the drawing). It is engaged with the rail 14.

A tension spring 17 is provided on the upper surface of the horizontal portion 15b on the near side (lower side in the drawing) of the slider 15 so as to resiliently move the slider 15 away from the lead shaft 9. One end of the tension spring 17 is connected to a latching piece 15 provided on the outer end (left side in the drawing) of the slider 15.
c. The other end of the tension spring 17 is hooked on a hook 18 a supported by a spring support 18 fixed on the turntable 6.

A tension shaft 19 is provided upright near the inner end of the horizontal portion 15a on the back side of the slider 15 so as to face the lead shaft 9. As shown in FIG. 1, the tension shaft 19 has a flange formed near the lower end, and the lower part of the flange is thinned to form a thread. This screw part,
Insert into the mounting hole provided at the inner end of the slider 15,
The tip is fixed to the slider 15 by tightening with a nut.

As shown in FIGS.
, A collar 20 having a cylindrical section is rotatably mounted. Since the lead shaft 9 and the tension shaft 19 are in a state of being repelled by the tension spring 17, the lead shaft 9 and the slider 15 are usually opposed to each other at a position separated from the lead shaft 9 together with the slider 15 as shown by a two-dot chain line in the drawing. It is standing.

As shown in FIG. 1, a motor 21 constituting a turntable driving means is attached to the side of the bearing holder 3 (right side in the drawing). The motor 21 is mounted on the support 1
The upper half of the body is fixed to the table 2 so as to be exposed on the table 2 by a bracket 22 having a fixed relationship with the table 2. A pinion 23 is attached to an output shaft 21a provided vertically. The pinion 23 meshes with the tooth portion 4 b of the large gear 4 described above, and can transmit the rotation of the motor 21 to the turntable 6 via the large gear 4.

Next, the operation will be described. In FIG. 1, the motors 10 and 21 are stopped and the slider 15
When a force is applied in the direction approaching the lead shaft 9, the slider 15 moves so as to approach the lead shaft 9 along the guide rail 14 against the elastic force, and is indicated by a solid line in FIGS. As shown, the lead shaft 9 and the tension shaft 19 are located close to each other. In this state, when a large number of ring-shaped packings P to be aligned between the two shafts 9 and 19 are randomly mounted, the packings P are formed as shown by the double circles in FIG. State. Next, when the slider 15 is released, the slider 15 is repelled outward (to the right) by the tension spring 17, and the tension shaft 19 moves in a direction away from the lead shaft 9. Are separated from each other as shown by a two-dot chain line in FIGS. As a result, as shown in FIGS. 3 and 4 (a), the packing P is connected to the lead shaft 9 and the tension shaft 19.
It is like a belt hung between the two axes.

Next, when a start switch (not shown) is turned on and each of the motors 10 and 21 is driven, the lead shaft 9 rotates via the drive shaft 7 while the turntable 6 is driven by the drive pinion 23 and the large gear 4. Through the lead shaft 9 as a rotation center. The rotation of the turntable 6 causes the tension shaft 19 erected on the turntable 6 to rotate together with the collar 20 around the lead shaft 9. At this time, the collar 20 is connected to the tension shaft 1 via the packing P.
9 rotates around the center of rotation. The packing P rotates around the lead shaft 9 by the tension shaft 19 and is gradually aligned by the rotation of the lead shaft 9 itself.
As shown in (b), the packing group starts dispersing.
Further, as the rotation of both members continues, the many packings are aligned and sent out one by one by the spiral groove 9a formed on the lead shaft 9.

When the packing P comes to the region where the pitch of the groove 9a at the tip end is widened, the interval between the packings is widened, and as shown in FIG. It is in a state of waiting after being aligned and separated.
The packing P at the top is taken out by a separation jig of an unillustrated assembling apparatus, and the next packing comes to the top. In this manner, the packing can be easily removed one after another, and the removed packing is assembled into a predetermined position of the device by the assembling apparatus.

[0024]

As described above, according to the present invention,
Just by randomly mounting and rotating a number of annular elastic bodies such as a number of packings that are to be aligned between the lead shaft and the tension axis, a number of annular elastic bodies are sequentially aligned,
And it can be set in a state where it can be easily taken out. For this reason, troublesome manual work as conventionally performed is no longer required, and one can easily be taken out from a large number of annular elastic bodies one by one. It facilitates and contributes to the efficiency of the assembly process for equipment.

[Brief description of the drawings]

FIG. 1 shows a main part of an example of the present invention, and FIG.
FIG. 3 is a sectional view taken along line A.

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a front view showing an operation of sequentially aligning and separating a plurality of annular elastic bodies.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support base 6 Turntable 9 Lead shaft 9a Groove 10 Lead shaft drive means 21 Turntable drive means 19 Tension shaft 22 Member P annular elastic body

Claims (1)

(57) [Claims] 1. A lead shaft having a spiral groove on an outer peripheral surface and rotatably provided on a support base, a tension shaft provided opposite to the lead shaft, the lead shaft and the tension shaft, A plurality of annular elastic bodies which are randomly wound around the lead shaft; and a lead shaft driving means for rotating the lead shaft. The tension shaft is independent of the lead shaft about the lead shaft as a center of rotation. The turntable is rotatably driven by a turntable driving means provided on the support base or a member fixedly related to the support base. Alignment device for annular elastic body.