JPH047853Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bush assembling device that automatically attaches an elastic bush with a cut portion formed therein to a mounting member.

(Prior Art) Generally, in order to mount a bush in which a cut is formed on a bar-shaped member, a mounting jig is used to open the cut portion and mount it. It is shown in FIG. There is a previously filed application number 60-57155 for an elastic bushing attachment device. In this device, first, the opposing substrate 1
A cutout 3 of the bush 2 is provided in each board 1.
A clamp plate 5 is provided which is divided into one side and the other side with a clamp plate 5 having a clamp protrusion 4 for holding the end face of the bush 2, and this clamp plate 5 is provided opposite to the clamp protrusion 4. The bush 2 is held by moving it to one of the boards 1 having another clamp protrusion 4, and each clamp plate 5 and the board 1 are rotated in a direction perpendicular to the longitudinal axis of the bush 2. By providing a swinging means consisting of a cylinder 6 and a piston 7, the cut portion 3 of the bush 2 is opened and the bush 2 is mounted so as to surround the outer periphery of the mounting member 8.

(Problem to be solved by the invention) In the device having the above structure, the clamp plate is held between the clamp plate and the substrate, and when the cut portion is in the open state and the closed state, the device is held against the substrate 1. Since the positions of the center lines of the bushes 2 are different, the position of the bushes 2 mounted on the mounting member is not accurate and must be adjusted after the bushes are mounted.

Therefore, the present invention was devised to solve the above-mentioned problems. It is an object of the present invention to provide a bush assembling device which can accurately mount a bush to a mounting member by reducing the deformation thereof.

(Means for Solving the Problems) A feature of the present invention for achieving the above object is that an assembly device for opening a cut formed in an elastic bush and mounting the bush on a mounting member includes: A swinging motion in which a gripping mechanism is provided that grips the bush by contacting both end surfaces of the bush, and the gripping mechanism is rotated along both end surfaces of the bush while maintaining a frictional force between the gripping mechanism and the bush. This is because a mechanism has been established.

(Function) With the above configuration, after the bush is supplied to the gripping mechanism of the bush assembling device by another supply device, the gripping mechanism abuts both ends of the bush and grips it. After this, the swinging member is activated and the gripping mechanism, which is gripped by friction force, is rotated along both end surfaces of the bush so that the cut part of the bush can be opened. . After opening, the bushing is installed around the mounting member. As a result, the position of the center line of the bush with respect to the base plate 10 matches when the bush is in the open state and in the closed state, so that the bush can be accurately positioned with respect to the mounting member.

(Example) First, Fig. 1 shows an embodiment of the bush assembling device 9 of the present invention, and shows the state before the bush 2 is fed by another feeding device. , which is a plan view of FIG. 1, with the bush being fed to the position indicated by the dotted line. As shown in FIG. 2, the bush assembly device 9 has a base plate 10 located on both sides of its longitudinal axis, and a hinge pin 11 is fitted from one side near one end of the base plate 10. The hinge pin 11 has a substantially U-shaped first swivel base 12 and a second swivel base 13, both of which are attached to the right side along the longitudinal axis of the bushing assembly feeding station 9, as shown in FIG. 12. The second swing base 13 is located on the left, and the first swing base 12
is pivotally supported on the outside of the second swing base 13. On the other hand, from the other side near one end of the opposing base plate 10, the hinge pin 11
Another hinge pin 14 is fitted on the coaxial line,
The other two sides of the first pivot base 12 and the second pivot base 13 are pivotally supported by the hinge pin 14, and the second pivot base 13 is located on the outside of the first pivot base 12. The first swing base 12 is the hinge pin 1
1 and 14, a rod-shaped slide guide 1 is provided on the opposite side of the first pivot base 12 facing away from the pivot position rotated by the shafts 1 and 14.
5 is attached and both ends thereof are screwed. Bearings 16 are mounted on the slide guides 15 in the first swing bases 12 facing each other,
A first gripping claw 18 facing the inner wall of the first swing base 12 is bored at one end of the sleeve 17 surrounding the bearing 16 . Furthermore, as shown in FIG. 1, a first cylinder 19 is attached to the lower part of the first swing base 12 as a gripping mechanism, and a piston rod 20 (not shown) is connected to the first gripping claw 18. There is. Therefore, the second metal gripping claw 18 can reciprocate along the slide guide 15 together with the sleeve 17.
On the other hand, the second swing base 13 is
A slide guide 21 that crosses the longitudinal axis is attached to the opposing second swing base 13 at a place away from the pivot position where it rotates by 4, and both ends are screwed. has been done. Similarly, a bearing (not shown) is mounted on the slide guide 21, and one end of the sleeve 22 that covers this bearing is aligned with the surface of the first gripping claw 18 belonging to the first swing base 12. The second gripping claw 23 is bored so as to do so. A second cylinder 24 is attached to the lower part of the second swing base 13 as a gripping mechanism,
A second gripping claw 23 is attached to one end of the piston rod 25.
are connected. Therefore, the second gripping claw 23 can reciprocate along the slide guide 21 together with the sleeve 22. On the other hand, a shaft 26 is passed from one side of the base plate 10 to the other side near the other end between one end and the other end in the longitudinal direction of the base plate 10 facing each other, and a shaft 26 is provided at both ends of the shaft 26 . It is rotatably supported by. A first lever 28 protruding from the outer periphery of the shaft 26 is formed near the middle of the shaft 26, and a second lever 28 is formed inside the other side of the base plate 10.
9. A third lever 30 is integrally protruded from the inside of one side, and has different eccentric positions. A U-shaped bracket 31 is extended from one side to the other at the other end of the base plate 10, and both ends of the bracket 31 are swingably supported by hinge pins 32. A cylinder 33 as a swinging mechanism is attached to the inside of the bracket 31 sandwiched between one side and the other side of the base plate 10, and the split end of the piston rod 34 is connected to the first lever 28 by the hinge pin 35. The shaft 26 is rotatably supported by the shaft 26. Therefore,
The shaft 26 is rotated by the operation of the cylinder 33, and the second lever 29 and the second lever 30 at both ends thereof can be rotated. The second lever 29 that receives this rotational movement is provided with a hinge pin 36.
One end of the first link 37 is rotatably supported, and the end thereof extends along the other side of the base plate 10 toward the one end thereof, and is connected to the axis of the hinge pin 14 of the second swing base 13 as described above. Support position and slide guide 21
It is rotatably supported by a hinge pin 38 at a position approximately midway between the position and the position. Third lever 30
One end of the second link 40 is rotatably supported by the hinge pin 39, and the other end extends along one side of the base plate 10, and the hinge pin 11 is supported by the first pivot base 12 described above. It is rotatably supported by a hinge pin 41 approximately halfway between the position of the slide guide 15 and the position of the slide guide 15 .

When attaching the bush 2 to the mounting member 8 using the bush assembling device 9 constructed as described above, the bush 2 is first moved by a feeding device (not shown) such as a vibrating feeder as shown in FIG. It is supplied to the position shown in . The bush assembling device 9 itself can be moved to another location by attaching a base plate 10 to the tip of a manipulator or the like (not shown).
Here, as shown in FIG. 2, when the first cylinder 19 and the second cylinder 24 operate, the first gripping claw 18 and the second gripping claw 23 move to the respective slide guides 15 and 24.
21 and presses the bush 2 against the surfaces of the first swing base 12 and the second swing base 13 without greatly deforming it. In this way,
When the bush 2 is gripped, a manipulator (not shown), for example, is operated and the bush 2 is gripped.
When the cylinder 33 is operated and its piston rod 34 is extended, the shaft 26 rotates clockwise in the direction of arrow A shown in FIG. The first link 37 and the second link 40 rotate the first swing base 12 and the second swing base 13 around the hinge pins 11 and 14 from their initial positions to the left and right, respectively. At this time, as shown in FIG. 4, the cutout 3 of the bush 2 is opened, the bush assembling device 9 approaches the mounting member 8 so as to surround it, and the cylinder 33 operates in the opposite direction. When the shaft 26 rotates to the left in the direction of arrow B shown in the figure, the state returns to the state shown in FIG. 3, and the bush 2 is mounted on the mounting member 8. Next, the first cylinder 19 and the second cylinder 24 are activated, and as shown in FIG. Return to the original position, touching the inner wall of the In this way, one process of attaching the bush 2 to the mounting member 8 is completed, and since the bush center line 2a is aligned with the base plate 10 when the bush 2 is open and closed, the mounting process is completed. Positioning relative to member 8 is accurate.

In this embodiment, the first gripping claw 18 and the second gripping claw 23 press and grip the bush 2 against the first swing base 12 and the second swing base 13 with their planes. There will be no damage to Butsuyu 2.

(Effects of the invention) From the above, the bushing assembly device of the invention has the center line of the bushing aligned with the base plate when the bushing is open and closed, so it is possible to accurately attach the bushing to the mounting member. Positioning becomes easier,
We were able to improve the efficiency of this assembly work.

[Brief explanation of the drawing]

FIG. 1 is a side view including a partial cross section showing a bush assembling device of the present invention, FIG. 2 is a plan view including a partial cross section of FIG. 1, and FIG. FIG. 4 is a side view including a partial cross section showing the state in which the bush is supplied to the bush, FIG. 4 is a side view including a partial cross section showing the state in which the bush is opened by the bush assembling device, and FIG. 6 is a side view showing the state in which the bush is opened by a conventional assembly device. FIG. 7 is a side view showing the state in which the bush is opened by the conventional assembly device. FIG. 2... Bush, 3... Cut portion, 8... Mounting member, 12, 13, 26, 33, 34... Swing mechanism (first swing base, second swing base, shaft,
cylinder, piston rod), 18, 19, 23,
24...Gripping mechanism (first gripping claw, first cylinder,
second gripping claw, second cylinder).

Claims (1)

[Scope of utility model registration request] In an assembly device that opens a cut portion formed in an elastic bush and mounts the bush on a mounting member, a gripping mechanism is provided that grips the bush by contacting both end surfaces of the bush, and the gripping mechanism and A bush assembling device comprising a swing mechanism that rotates the gripping mechanism along both end surfaces of the bush while maintaining a frictional force with the bush.