JPH0671524A - Method and device for automatic mounting of ring-shaped parts - Google Patents

Abstract

PURPOSE:To provide a method where ring-shaped parts can be surely built in a cylindrical product, and provide a device which can correctly execute the method. CONSTITUTION:A ring-shaped part 1 is assembled in the middle of the outer circumference of a cylindrical product 2 by a holding part 4, the ring-shaped part 1 is moved to the prescribed position in the axial direction on the outer circumference of the cylindrical product 2 by a cylindrical member 11 and then positioned thereto. Even when the ring-shaped part 1 is positioned in a twisted or similar manner relative to the cylindrical product 2, the ring-shaped part can be moved while the ring-shaped part being pushingly pressed by the movement of the cylindrical member 11. Thus, even when the ring-shaped part 1 is formed of an elastic material and formed lightweight, the part is not twisted and can be surely built in the cylindrical product 2 in a regular manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic mounting method for a ring-shaped part and an apparatus for the ring-shaped part, which is made of an elastic material, and is incorporated into the outer periphery of a cylindrical product.

[0002]

2. Description of the Related Art Conventionally, when a ring-shaped part made of an elastic material such as a packing or a seal is incorporated in the outer periphery of a columnar product, an automatic mounting device is used as shown in FIG. That is, in the conventional automatic mounting apparatus, in order to easily mount the ring-shaped part a on the outer periphery of the columnar product b, the ring-shaped part a is previously spread from the inside by the expanding means (not shown), and the state The ring-shaped part a by the gripping part c
While holding the ring-shaped part a while holding the ring-shaped part a by holding the ring-shaped part a while integrally holding the ring-shaped part a by moving the holding part c and the base d supporting the holding part c by the cylinder e integrally by the cylinder e. It was designed so that it could be installed at a predetermined position in.

[0003]

By the way, the automatic insertion device of the prior art described above is weak because the ring-shaped part a such as packing and seal is formed of an elastic material, and is small and lightweight. And therefore,
Even if the ring-shaped part a is spread outward from the inside and lowered while being held, and is attached to the columnar product b, the ring-shaped part a is twisted or bent on the columnar product b to form a regular shape. Therefore, there is a problem that it is difficult to assemble the ring-shaped part a and it is difficult to mount it accurately on the columnar product b.

In view of the above-mentioned circumstances, an object of the present invention is to provide an automatic mounting method for a ring-shaped component which allows the ring-shaped component to be accurately and surely assembled into a columnar product. An object of the present invention is to provide an automatic mounting device for ring-shaped parts, which can accurately perform the above method.

[0005]

In the method of the present invention,
While gripping the ring-shaped component from the outer peripheral side, insert the ring-shaped component up to the middle position in the axial direction on the outer periphery of the columnar product while gripping it, then release the grip of the ring-shaped component, and then place the ring-shaped component around one end face. The pressure is applied to the columnar product so that the columnar product is positioned while being displaced to an intermediate position in the axial direction on the outer periphery.

In the device of the present invention, a gripping portion that is supported so as to be openable and closable and that can grip the ring-shaped component from the outer peripheral side,
A gripping unit that has an opening / closing drive unit that opens and closes the gripping unit and a moving drive unit that moves the ring-shaped component gripped by the gripping unit toward the columnar product, and is movable along the axial direction of the columnar product. A cylindrical member that is supported and has substantially the same inner diameter as that of the cylindrical product and the outer diameter of the ring-shaped component, and a cylindrical member that can move the cylindrical member toward the ring-shaped component on the cylindrical product. And a push-in unit, each of which has a driving unit.

[0007]

In the method of the present invention, as described above, the ring-shaped part is assembled while being held down to the midway position on the outer periphery of the cylindrical product, and then the ring-shaped part is surrounded by one end surface. Since it is moved to a predetermined axial position on the outer circumference of the columnar product while pressing it, the ring-shaped part is twisted or bent when the ring-shaped part is inserted into the columnar product. Even if the ring-shaped member is made of an elastic material and is a lightweight body, the ring-shaped member is pushed around the one end face and then displaced while being pressed. Can be incorporated into cylindrical products.

As described above, the device of the present invention is provided with the gripping unit having the gripping portion, the opening / closing driving portion, and the moving driving portion, and the pushing unit having the tubular member and the tubular member driving portion, respectively. Since it is configured, it is possible to assemble the ring-shaped part up to the middle position in the axial direction on the outer circumference of the columnar product by the gripping unit and position the ring-shaped part by the pushing unit without bending to the predetermined position of the columnar product. You can definitely.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory perspective view showing an embodiment of an automatic mounting apparatus for carrying out the method of the present invention, FIG. 2 is a perspective view of the same main portion, and FIG. 3 is a ring-shaped part of a cylindrical product at an intermediate position in the axial direction. 4 is an explanatory view showing a state in which the ring-shaped component is assembled up to a predetermined position in the axial direction of the columnar product, and FIG. 5 is a diagram showing a columnar product in which the ring-shaped component is incorporated. is there.

An automatic mounting apparatus for carrying out the method of the present invention is for incorporating a ring-shaped component 1 made of an elastic material into the outer periphery of a cylindrical product 2, and is roughly classified into FIGS. 1 and 2.
As shown in FIG.
It has 0 and. The grip unit 3 has a grip part 4 that can be opened and closed. The gripping portion 4 is composed of a pair of two pieces that are supported on the unit base 5 so as to be openable and closable along the horizontal direction. When the ring-shaped component 1 is sent between them, a driving portion (not shown) is provided. Thus, the ring-shaped part 1 can be gripped by the claws 4a and 4b at both ends so as to close the gap between the two in the direction of arrow A in FIG. At this time, the claws 4a and 4b of the grip portion 4 have an arc shape corresponding to the outer periphery of the ring-shaped component 1 so that the ring-shaped component 1 can be reliably gripped. The ring-shaped component 1 has a V-shaped cross section, and is sequentially conveyed one by one from the rear side of the unit base 5 to the positions below the claws 4a and 4b of the grip portion 4, and when conveyed below the claws 4a and 4b. By being lifted by a push-up pin (not shown), it is positioned between the claws 4a and 4b.

Further, the grip unit 3 has an air cylinder 6 as a drive section for moving the grip section 4.
As shown in FIG. 1, the air cylinder 6 is attached to a fixed portion 8 via a support bracket 9, and the tip of the rod is
It is attached to an L-shaped connecting member 7 provided on the unit base 5. Then, when the gripping portion 4 grips the ring-shaped component 1, when the unit base 5 is lowered by the advance of the rod of the air cylinder 6 as indicated by the arrow B in FIG. 2, the gripping portion 4 grips the ring-shaped component 1. Until it falls toward the cylindrical product 2, the tip of the cylindrical product 2 is inserted into the ring-shaped component 1, and as shown in FIG. 3, the ring-shaped component 1 reaches an intermediate position in the axial direction on the outer periphery of the cylindrical product 2. To be able to incorporate. Therefore, the center of the ring-shaped component 1 and the center of the columnar product 2 gripped by the gripping portion 4 are positioned substantially on the same coaxial line.

Therefore, the gripping unit 3 has a gripping portion 4, a driving portion (not shown), and an air cylinder 6. On the other hand, the pushing unit 10 has a tubular member 11 movably supported toward the columnar product 2. That is, as shown in FIG. 2, the tubular member 11 has an inner diameter that allows the cylindrical product 2 to be inserted therethrough, and an outer diameter that is substantially the same as the outer diameter of the ring-shaped component 1. The arm 11a extending in the horizontal direction is provided on the upper part of the arm 11a, and the guided portion 11b is provided at the tip of the arm 11a. A centering pin 12 having substantially the same diameter as the columnar product 2 is inserted into and supported by the tubular member 11. The centering pin 12 is provided with a tension spring or the like (not shown) between the centering pin 12 and the tubular member 11. The centering pin 12 is displaced so as to move on the tubular member 11 when an external force in the axial direction is applied. The member 11 can return to its original position.

The arm 11a of the tubular member 11 is attached to the tip of the rod of the air cylinder 13 attached to the fixed portion 8, and the guided portion 11b is attached to the rail 8 of the fixed portion 8.
When the rod is moved forward as shown by an arrow C in FIG. 2 when it is assembled in conformity with “a” and driven by the air cylinder 13, the rod descends along the rail 8 a toward the columnar product 2. At the time of the lowering, first, the centering pin 12 hits the upper end surface of the columnar product 2, and the tubular member 11 further descends with the abutting contact, and as shown in FIG. 4, the tubular member 11 inserts the columnar product 2 therethrough. The tip end surface of the tubular member 11 presses the upper end surface of the ring-shaped component 1 over the periphery and shifts it downward, so that the ring-shaped component 1 can be positioned at a predetermined axial position on the outer periphery of the columnar product 2. I have to. Therefore, the axis of the tubular member 11 and the axis of the columnar product 2 are positioned substantially coaxially.

Since the automatic mounting apparatus of the embodiment has the above-mentioned construction, one embodiment of the method of the present invention will be described next in relation to its operation. When the ring-shaped component 1 is conveyed from the rear of the gripping unit 3 of the automatic mounting device to a position below the gripping unit 4, the gripping unit 4 is driven by a driving unit (not shown),
The claws 4a and 4b on the tip end side of the grip portion 4 are operated to move in the arrow A direction shown in FIG. 2 so that the ring-shaped component 1 is pinched and gripped, and then the air cylinder 6 is driven to move the rod. When moving forward, the gripping part 4 descends toward the columnar product 2 while gripping the ring-shaped component 1, and the ring-shaped part 1 also descends straight as the gripping part 4 descends. As shown in FIG. 3, the columnar product 2 is inserted, and the drive of the air cylinder 6 is stopped when the columnar product 2 is inserted to an intermediate position on the outer periphery of the columnar product 2. Then, when the ring-shaped component 1 is inserted into the intermediate position of the columnar product 2 and stopped, the gripping portion 4 is driven in the direction opposite to the arrow a by the drive of the drive unit (not shown), and the gripping of the ring-shaped component 1 is released.

Thereafter, the rod is advanced by driving the air cylinder 13 of the pushing unit 10, and the tubular member 11 is lowered together with the centering pin 12. that time,
When descending, first, the tip of the centering pin 12 hits the upper end surface of the columnar product 2, and when the tubular member 11 further descends, the tubular member 11 slides on the centering pin 12 as shown in FIG. It moves and reaches the outer circumference of the cylindrical product 2, hits the ring-shaped member 1 on the cylindrical product 2, and presses the upper end surface of the ring-shaped member 1 around the circumference, so that the ring-shaped member 1 is twisted or bent. Without the regular shape, the cylindrical product 2 is positioned at a predetermined axial position on the outer circumference of the cylindrical product 2, and the rod of the air cylinder stops at that position.

In the method of the present invention, the gripping part 4 descends while gripping the ring-shaped component 1 to assemble the ring-shaped component 1 to an intermediate position on the outer periphery of the columnar product 2, and then the tubular member of the pushing unit 10. Since the ring-shaped component 1 is moved to a predetermined axial position on the outer periphery of the columnar product 2 by the lowering of 11 and positioned, when the ring-shaped component 1 is inserted into the columnar product 2 by the gripping portion 4,
Even if the ring-shaped component 1 is twisted or bent,
By moving the tubular member 11 of the pushing unit 10 downward, the ring-shaped member 1 can be pushed and displaced, and even if the ring-shaped member 1 is made of an elastic material and is a lightweight body,
Cylinder products that are in a regular shape and do not bend
Can be incorporated into.

Further, in the automatic mounting apparatus of the embodiment,
Since the gripping unit 3, which has the gripping unit 4, the driving unit (not shown), and the air cylinder 6, respectively, and the pushing unit 10, which has the tubular member 11 and the air cylinder, respectively, are configured, the ring-shaped component 1 of the cylindrical product 2 is formed. It is possible to reliably assemble the ring-shaped component 1 to an intermediate position on the outer periphery in the axial direction and bend the ring-shaped component 1 to a predetermined position without bending. The cylindrical member 11 of the pushing unit 10
When the positioning by is completed, the air cylinder 13 is retracted to the original position, and the air cylinder 6 of the gripping unit 3 is also retracted to the original position. By repeating the above operation, the ring-shaped parts for the respective cylindrical products are repeated. Assembling 1 will be performed sequentially.

[0018]

As described above, according to claim 1 of the present invention, the ring-shaped component is attached to an intermediate position in the axial direction on the outer periphery of the cylindrical product while being held, and then the ring-shaped component is Since it is configured to shift and position to the predetermined position in the axial direction on the outer periphery of the cylindrical product while pressing it around the end face of, the ring-shaped part is Even if it is twisted or bent, it shifts while pressing the ring-shaped member, so even if the ring-shaped member is made of an elastic material and it is a lightweight body, it will surely become a columnar product in a regular form without bending. As a result that can be incorporated,
As a result, the assembly can be stabilized, and the reliability can be improved.

According to the second aspect of the present invention, since the grip unit and the pushing unit are provided, there is an effect that the method of the above-mentioned first aspect can be properly implemented.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing an embodiment of an automatic mounting device for carrying out the method of the present invention.

FIG. 2 is a perspective view showing a main part of the automatic mounting device.

FIG. 3 is an explanatory view showing a state in which a ring-shaped component is assembled up to an intermediate position in the axial direction of a cylindrical product.

FIG. 4 is an explanatory view showing an operation state in which a ring-shaped component is assembled to a predetermined position in the axial direction of a cylindrical product.

FIG. 5 is a view showing a columnar product incorporating a ring-shaped component.

FIG. 6 is an explanatory diagram showing a main part of a conventional automatic mounting unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ring-shaped part 2 ... Cylindrical product 3 ... Gripping unit 4 ... Gripping part 6 ... Air cylinder as a drive unit for movement 10 ... Pushing unit 11 ... Cylindrical member 13 ... Air cylinder as a driving unit for a tubular member

Claims (2)

[Claims] 1. A method for automatically mounting a ring-shaped component made of an elastic material on the outer periphery of a cylindrical product, comprising:
While gripping the ring-shaped part from the outer peripheral side, while holding the ring-shaped part, attach it to a midway position in the axial direction on the outer periphery of the columnar product, then release the grip of the ring-shaped part, and then place the ring-shaped part around one end face. An automatic mounting method for a ring-shaped component, characterized by displacing and positioning to a predetermined axial position on the outer periphery of a columnar product while pressing across. 2. A ring-shaped component automatic mounting apparatus for mounting a ring-shaped component made of an elastic material on the outer periphery of a cylindrical product,
A gripping portion that is openably and closably supported and that can grip the ring-shaped component from the outer peripheral side, an opening and closing drive portion that opens and closes the gripping portion,
A gripping unit each having a driving unit for moving the ring-shaped component gripped by the gripping unit toward the columnar product, and movably supported along the axial direction of the columnar product,
And a cylindrical member having an inner diameter through which the cylindrical product can be inserted and an outer diameter of the ring-shaped component, and a tubular member drive unit capable of moving the cylindrical member toward the ring-shaped component on the cylindrical product. An automatic mounting device for ring-shaped parts, comprising: