JPS58223538A - Ring attaching device - Google Patents

Abstract

PURPOSE:To enable rings differing in their diameters to be set by allowing the first and second force bodies 7 to selectively advance after providing said force bodies outside a support rod. CONSTITUTION:The ring retainer 10 of a support rod 8 driven in its forward and backward motion retains rings 4a, 4b differing in their diameters, and the first and second force bodies 6 and 7 are provided outside the support rod 8. And, while allowing one of said bodies to selectively advance, the rings are forced into a work hole by means of the first or second force body 6 or 7 in the advanced state. In such a way, it is possible to set several kinds of rings differing in their diameters and securely prevent the rings from being carried back after setting them.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for mounting a ring into a hole in a workpiece, and particularly to a ring mounting device applicable to rings of different diameters.

Conventional devices of this kind have been configured as part of an automatic assembly machine, and the rings that can be mounted are limited to rings of specific dimensions. The reason for this is that when the ring is completely pushed into the hole of the workpiece, the outer diameter of the claw of the pushing device cannot be made larger than the outer diameter of the hole of the workpiece. Furthermore, if the outer diameter of the small-diameter ring is substantially the same or larger than the inner diameter of the large-diameter ring, it will be impossible to push the ring in with a claw having the same outer diameter. Therefore, if the outer diameter of the ring changes, the device must be replaced with a device of another size. As described above, conventional devices are specialized and have low flexibility.

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly flexible ring mounting device that can be commonly used for mounting rings of several diameter sizes. Another object is to provide a means for reliably preventing the ring from being taken home after the ring is worn.

Based on the above object, the present invention always holds rings of different diameters concentrically with a ring holder of a support rod that is driven forward and backward, and a first suppressor and a second suppressor are provided outside the support rod. One of the bodies is selectively moved forward, and the ring is pushed into the hole of the workpiece by the first or second suppressor in the advanced state.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

First, FIG. 1 shows the positional relationship between a ring mounting device 1 of the present invention and a workpiece 2. As shown in FIG. The work 2 is, for example, a cylinder head of an engine, and includes a guide body 3 and a guide rail 3α.
It is conveyed along the road and positioned by the positioning bin 3b. Then, the ring mounting device 1 inserts the large diameter ring 4α or the small diameter ring 4h into the stepped large diameter hole 2α or the small diameter hole 2bFC of the workpiece 2.

Now, the ring mounting device 1 of the present invention is shown in FIGS. 2 and 3.
As shown in the figure, a first suppressing body 6 is concentrically fixed to the tip of a supply rod 5 that can move forward and backward, and a crucian 2 pressing body 7 is concentrically fixed to the outside of the first suppressing body 6 and axially oriented. A support rod 8 is attached to the distal end of the first suppressing body 6 so as to be movable in the axial direction while being biased in the forward direction by a spring 9. A ring holder 10 is provided, and the support rod 8 is provided with a stopper rod 12.

Here, the stopper rod 12 is in a relationship of contacting the stopper 11 at a fixed position with respect to the workpiece 2.

The supply rod 5 is slidably supported in the axial direction with respect to the machine frame 13, and is connected at its rear end to a drive means such as a drive cylinder (not shown) to move back and forth. The distal end of the supply rod 5 is inserted into the connecting hole 14 at the rear end of the first suppressor 6, and is screwed into the set screw 16 in contact with the cutout surface 17 of the supply rod 5 while it is in contact with the abutting body 15. Fixed. The first suppressor 6 has a cylindrical shape, and is provided with a storage hole 18 for storing the cylindrical support rod 8 at its tip, and a pressing hole 18 formed by a trident-shaped notch around the axis at the tip. A claw 19 is formed.

The support rod 8 is inserted into the storage hole 18' with a spring 9 interposed therebetween and is biased in the forward direction, but the stopper rod 12 fixed to the support rod 8 Since the support rod 8 faces the inside of the regulation hole 20, the support rod 8 cannot be pulled out from the storage hole 18. The stopper rod 12 is connected to the regulation hole 20 and the hole 2 of the second pressing body 7.
1 and corresponds to the stopper 11 described above. Further, the tip end portion of the second suppressing body 7 forms a trident-shaped pressing claw 22 which is concentric with the pressing claw 19 and retracted from the pushing claw 19 while being out of phase.

Here, the outer diameter of the pressing claw 22 is also larger than the outer diameter of the pressing claw 19. The pressing claws 19, 22 correspond to the insertion of the small-diameter ring 415 and the large-diameter ring 4α into the workpiece 2, respectively.

The ring holder lO is an annular body and is attached to the distal end surface of the support rod 8 by means of a holder 23 having a T-shaped cross section and a mounting bolt 24, and the ring holder 10 is held in three equidistant positions. Three holding pieces 26 are held in the hole 25 in the radial direction. These holding pieces 26 are always urged in the radial direction by springs 27 while being prevented from being removed from the ring holding body 10. On the other hand, a mounting plate 2 is attached to the supply rod 5.
8 is fixed in a penetrating state. A cylinder 29 and a lid 30 are fixed to the mounting plate 28 concentrically with the supply rod 5. A cylindrical piston 31 is inserted into the supply rod 5 inside the cylinder 29 so as to be slidable in the axial direction. One end of this piston 31 is fixed to a connecting plate 33 with a mounting bolt 32.
3 is attached to the rear end of the second pressing body 7 by a mounting bolt 34. The connecting plate 33 supports the position detecting dog 39, and is slidably fitted into the guide pin 35 screwed into the lid 30 through the guide hole 3G, and is not rotated. The cylinder 29 also receives pressure from a pressure source from its bows 37, 38.

Next, the operation of the ring mounting device 1 will be explained.

First, FIGS. 4A, B, and C show a series of operations when attaching a small-diameter ring 475. first supply rod 5
is in the retracted position, and the piston 31 is in the retracted position with respect to the cylinder 29 (the state shown in FIG. 2). For this reason, pressing claw 1
9 is in a state of protruding beyond the pressing claw 22. In this state, the ring holder 10 is attached to the small diameter ring 4b as shown in FIG. 4A.
is held. That is, the small-diameter ring 4b contacts the tapered portion at the tip of the support rod 8, and its inner peripheral surface is held by three holding pieces 26 biased by a spring 27. Thereafter, the supply rod 5 is driven forward by a drive cylinder or the like. When the small diameter ring ν comes to the front of the hole 2b, the stopper rod 12 hits the stopper 11 as shown in FIG. Overcome and advance further. At this time, the pressing claw 19 of the first pressing member 6 pushes the small-diameter ring 4h into the small-diameter hole 2b of the stopped workpiece 2, as shown in FIG. With this pressure, the small diameter ring 4b is completely removed from the ring holder 10 and fitted into the hole 2b. Thereafter, the supply rod 5 is moved back to prepare for the next operation.

Note that when the ring 4b comes off from the ring holder 10,
The holding piece 26 resists the elasticity of the spring 27 and presses into the holding hole 25.
sink inside. After this, the supply rod 5 moves back, but since the small-diameter ring 4b is completely separated from the ring holder 10, the ring holder 10 can bring back the ring 4h attached to the workpiece 2 when moving back. There isn't.

Next, FIGS. 5A, 5B, and 5C show a series of operations when attaching a large diameter ring 4α. In this case, the second suppressor 7 is set in advance in place of the first suppressor 6 at the forward position. That is, when pressure fluid is fed into the boat 37 at the retracted position of the supply rod 5, the piston 31
moves in the direction of the lid 30, causing the second pressing body 7 to protrude in the advancing direction. In this way, the pressing pawl 22 is switched to a state in which it protrudes from the pressing pawl 19, as shown in FIG. In this state, as in the case of the small diameter ring 4h, the supply rod 5 moves forward as shown in FIG.
As shown in Figure C, the large diameter ring 4α is fitted into the large diameter hole 2α using the pressing claw 22.

In the above embodiment, the second suppressor 7 is driven by the cylinder 129 and the piston 31, but this driving means is not limited to this. Further, the ring holder 10 may be integrally formed with the tip portion of the support rod 8. Further, the support rod 8 may be provided directly at the tip of the supply rod 5 instead of at the first suppressor 60, in which case the first suppressor 6 is arranged along the axis so that it can protrude in place of the second suppressor 7. It is attached so that it can slide freely in the direction.

In the present invention, one device can produce multiple rings with different diameters. Since it can be mounted, a dedicated device is not required for each ring with a different diameter, and since the first pressing body or the second suppressing body forcibly pushes out the held ring during insertion, the ring can be used as a ring holding body. Therefore, the ring can be reliably prevented from being brought back when the supply ring is retracted. Further, in an embodiment in which the ring holder has a plurality of holding pieces biased by springs, rings of different diameters can always be held concentrically, so that work can be carried out efficiently without mounting errors.

[Brief explanation of drawings]

FIG. 1 is a side view showing the positional relationship between the ring mounting device of the present invention and a workpiece, FIG. 2 is a cross-sectional view of the ring mounting device corresponding to the line ■-■ in FIG. 3, and FIG. Enlarged front view,
FIGS. 4A, B, and C are cross-sectional views when a small-diameter ring is installed, and FIGS. 5A, B, and C are cross-sectional views when a large-diameter ring is installed. 1... Ring mounting device, 2... Work, 4α
...Large diameter cylinder, 4h...Small diameter ring,
5... Supply rod, 6... First suppressor, 7.
...Second pressing body, 8...Support rod, 9...Spring, 1o...Ring holder, 11...Stopper, 12...Stopper rod, 26...Holding piece, 27. ...Spring, 29...Cylinder, 31...Piston. Patent applicant Account/Automobile Co., Ltd.

Claims (2)

[Claims] (1) A first suppressor and a second suppressor are provided concentrically at the tip of a supply iron that can move forward and backward, and either one of the first suppressor and the second suppressor can be slid in the axial direction. At the same time, a support iron is provided at the center of the tip of the supply rod so as to be slidable in the axial direction while being biased in the forward direction by a spring, and a ring holder is provided at the tip of the support rod, and A ring mounting device characterized in that a stopper rod that abuts a stopper at a fixed position is attached to the support rod. (2) The ring mounting device according to claim 1, wherein the ring holder includes a plurality of holding pieces urged in the radial direction by a spring.