JPS6231261Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for assembling a ring spring to a body to which it is attached by press fitting.

When a lid material is inserted into the inner diameter of a cylindrical part and a ring spring that can be expanded and contracted in the diametrical direction is fitted and assembled to the inner diameter end of the cylindrical part to prevent the lid material from escaping, A ring spring press fitting device is used.

Conventional ring spring press-fitting devices press the outer diameter of the expanded ring spring to the inner diameter that fits, and the hole diameter of the ring spring installation port of the object to be installed by pressing the side of the ring spring. A guide member provided with a tapered hole having an inner diameter that reduces the diameter of the ring spring is placed in opposition to the ring spring installation opening of the object to be installed, and a plurality of pressing claws are movably pivoted in the radial direction at the tip of the press-fitting ram. A plurality of springs are provided to support the ring spring and press the pressing claw in the radial direction, and the pressing claw is inserted into the tapered hole of the guide member and presses the side surface of the ring spring, thereby being press-fitted into the ring spring mounting opening of the object to be mounted. It has a structure that allows

According to this conventional device, since the pressing claw that presses the ring spring slides into the tapered hole of the guide member, the tip of the pressing claw wears out, causing durability problems, and the structure is complicated due to the large number of parts. It was hot.

The present invention provides a ring spring assembly device that solves all of the above-mentioned conventional problems.
Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show the main structure of the device of the present invention, and 1 is a guide member. This guide member 1 has an inner diameter that fits the outer diameter of the ring spring 6 in the expanded state, and an inner diameter that reduces the diameter of the ring spring 6 to the hole diameter of the ring spring attachment port 4 of the attached body 3, which will be described later. A tapered hole 2 is provided.

The attached body 3 is a cylindrical part, and a locking groove 5 for a ring spring 6 is formed in the inner diameter near the ring spring attachment port 4. When the ring spring 6 is assembled, the guide member 1 comes into contact with the attached body 3.

Reference numeral 7 denotes a press-fitting ram that can move forward and backward with respect to the guide member 1, and is located on a concentric line with the tapered hole 2 of the guide member 1. A concentric shaft portion 8 is protruded from the tip of the press-fitting ram 7, and has a polygonal shape that is slightly larger than the diameter of the ring spring 6 in its expanded state and capable of pressing the side surface of the ring spring 6 at multiple locations. A first pressing member 9 having a pressing surface 10 is slidably guided.

Further, at the tip of the shaft portion 8, a second pressing member 11 has a polygonal pressing surface 12 that is slightly smaller than the diameter of the ring spring 6 in the contracted state and capable of pressing the side surface of the ring spring 6 at a plurality of locations.
are integrally formed.

Further, in the first pressing member 9, the pressing surface 12 of the second pressing member 11 is connected to the pressing surface 12 of the first pressing member 9.
A recess 13 is formed in which the second pressing member 11 can be inserted so as to be substantially flush with the first pressing member 11.
The press-fitting ram 7 is installed so that the pressing surface 10 of the pressing member 9 and the pressing surface 12 of the second pressing member 11 are in the same plane state.
A spring 15 for pressing the first pressing member 9 is interposed between the first pressing member 9 and the first pressing member 9 .

Further, the tapered hole 2 of the guide member 1 has a through groove 14 through which the tip of each pressing surface 10 of the first pressing member 9 passes, and a spring is provided at the fitting position of the ring spring 6 in the expanded state. A retaining pin 16 that is pressed by and retractable is provided. Further, the guide member 1 has a support shaft 20 fixed to its side, and is attached to the tip of a robot arm (not shown).

Next, the operation of the device of the present invention will be explained.
In FIG. 4, reference numeral 21 denotes a ring spring supply device, and the ring spring slides along a guide portion 23 formed on the upper surface of the main body 22 of the supply device and is carried directly above the mounting rod 24. Mounting rod 2
A guide member 1 is positioned above the cylinder 2 with the larger diameter of the tapered hole 2 facing downward.
5, the mounting rod 24 is raised, receives the ring spring 6 at its end face, fits into the tapered hole 2 of the guide member 1 in an expanded state, and is held by the holding pin 16. After the mounting rod 24 is lowered, the guide member 1
is reversed by 180 degrees, and the tapered hole 2 is brought into contact with the upper end of the workpiece 3 set on the workpiece platform 19 with the smaller diameter side facing downward. A wave washer 18 and a lid material 17 are installed in the object 3 in the previous process.
is pre-assembled.

A press-fitting ram 7 is located directly above the guide member 1 that is in contact with the upper end of the attached body 3, and is moved downward by a press-fitting command from a ring spring. This press-fit ram 7
Due to the downward movement of the ring spring 6, the side (top)
The pressing surface 10 of the first pressing member 9 comes into contact with the ring spring 6 and pushes the ring spring 6 down along the tapered hole 2 toward the smaller diameter side. This causes ring spring 6
The diameter of the tapered hole 2 decreases as the diameter of the tapered hole 2 changes, and when it is press-fitted into the ring spring mounting port 4 of the object 3, the first pressing member 9 presses against the end surface of the object 3, as shown in FIG. It comes into contact with and stops the downward movement. On the other hand, since the second pressing member 11 is smaller than the diameter of the ring spring mounting port 4, the press-fitting ram 7
The downward movement of the spring enters the ring spring mounting port 4 and pushes the ring spring 6 into the locking groove 5.

After the ring spring 6 is assembled, the press-fitting ram 7 moves upward. At this time, the second pressing member 11 rises together with the press-fitting ram 7, and the recess 1 of the first pressing member 9
3, the first pressing member 9 also moves upward, and the pressing surfaces 10 and 12 become the same plane and are returned to their original positions.

As described above, according to the device of the present invention, since there is no need to support the pressing member so that it can be displaced in the radial direction, the configuration of the member that presses the ring spring fitted to the guide member is greatly simplified. Moreover, since the ring spring is pressed without slidingly contacting the tapered hole of the guide member, there is no wear of the pressing member and the durability is high.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main part of the present invention, showing a state in which the ring spring is press-fitted to the ring spring mounting opening of the object to be mounted. Fig. 2 is a cross-sectional view of the main part of the ring spring assembled into the locking groove, Fig. 3 is a cross-sectional view taken along the line of Fig. 1, and Fig. 4 is a combination of the device of the present invention and the ring spring supply device. FIG. DESCRIPTION OF SYMBOLS 1... Guide member, 2... Tapered hole, 3... Mounted object, 4... Ring spring installation port, 5... Locking groove, 6... Ring spring, 7... Press fit ram, 8... Shaft Part, 9... First pressing member, 10...
Pressing surface, 11... Second pressing member, 12... Pressing surface, 13... Recess, 14... Through groove, 15... Spring.

Claims (1)

[Scope of utility model registration request] By pressing the inner diameter into which the outer diameter of the ring spring in the expanded state fits and the side surface of this ring spring, the diameter of the ring spring is reduced to the diameter of the hole of the ring spring installation port of the object to be attached. a guide member having a tapered hole having an inner diameter and facing the spring attachment port of the attached body; a press-fit ram that is concentric with the tapered hole of the guide member and can move forward and backward with respect to the guide member; A concentric shaft is provided at the tip of this press-fitting ram, and it is slidably guided by this shaft, has a diameter slightly larger than the diameter of the ring spring in the expanded state, and presses the sides of the ring spring at multiple points. a first pressing member having a polygonal pressing surface; and a pressing member that is integrally formed at the tip of the shaft portion, is slightly smaller than the outer diameter of the ring spring in the contracted state, and is capable of pressing the side surface of the ring spring. a second pressing member having a surface, and the first pressing member has a first pressing member with respect to the second pressing member until the pressing surface of the second pressing member and the pressing surface of the first pressing member are located on substantially the same plane. A recessed portion for allowing movement of the pressing member is formed, a spring for pressing the first pressing member is interposed between the press-fitting ram and the first pressing member, and a spring for pressing the first pressing member is provided in the tapered hole of the guide member. A ring spring assembly device characterized in that a through groove is formed to allow each tip to pass through.