JP2569992B2 - Manufacturing equipment for liquid-filled anti-vibration mounts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a liquid-filled anti-vibration mount, and more particularly to a liquid-filled vibration-proof mount which always keeps a fixed amount of liquid in the mount and always properly mounts a diaphragm film constituting a chamber wall of a liquid chamber. The present invention relates to a manufacturing apparatus that can be performed.

[0002]

2. Description of the Related Art In a liquid-filled anti-vibration mount, a main liquid chamber is formed in an anti-vibration rubber body for supporting a vibrating body, and a sub-flow chamber is communicated with the main liquid chamber through a throttle channel and a diaphragm film is used as a chamber wall. There is a type in which a liquid chamber is formed and a sealing liquid is caused to flow through a throttle channel from a main liquid chamber deformed by vibration input to exert a vibration damping effect.

The liquid is sealed in the vibration-proof mount by assembling a vibration-proof rubber body, a cylindrical side plate, a partition plate having a throttle channel, and a diaphragm in a liquid tank. In such a state, the vibration-proof rubber body is pre-compressed by a predetermined amount and assembled so that the vibration-proof mount exhibits the best performance (Japanese Patent Application Laid-Open No. 61-165039).

[0004]

In the prior art, since the sub-assembly in the pre-compressed state is manually performed, the pre-compressed amount is not constant, and the amount of the sealed liquid fluctuates. In some cases, the diaphragm cannot be used, and there is a problem that an error is likely to occur in the assembly of the diaphragm.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem. A liquid which can always provide a constant amount of pre-compression to a vibration-proof rubber member to obtain good performance and can also assemble a diaphragm film accurately and easily. It is an object of the present invention to provide an apparatus for manufacturing a sealed anti-vibration mount.

[0006]

To explain the construction of the present invention, one end opening of a cylindrical side plate 4 is joined to the peripheral edge of the opening of a thick anti-vibration rubber body 1 having a closed container shape. Is partitioned in the axial direction by a partition plate 3 provided with a throttle channel 31, and the other end opening of the side plate 4 is closed by a diaphragm film 2,
A main liquid chamber A having a vibration-proof rubber body as a chamber wall, and a sub-liquid chamber B having a diaphragm film 2 communicating with the diaphragm flow path 31 as a chamber wall.
And a fixing jig 5 fixed to the bottom of the liquid tank and holding the vibration-isolating rubber body 1 with its opening facing upward. A movable jig 6 is provided at a position above the jig 5 so as to be movable up and down, and the movable jig 6 has holding portions 61 and 6 for detachably holding an outer peripheral edge of the diaphragm film 2 on a lower surface thereof.
2 and 63 and a push member 7 which is urged downward by a spring member 71 is integrally provided.

[0007]

In the manufacturing apparatus having the above structure, when the movable jig 6 is lowered, the pushing member 7 abuts against the upper opening edge of the side plate 4 in the lowering process and presses the same, and the vibration member 1 is shaken.
The amount of deformation of the anti-vibration rubber body when a static load is applied to the moving body
Ru added those to the preliminary compression. When the movable jig is further lowered, the diaphragm film 2 held on the lower surface of the jig is inserted into the side plate, and the outer periphery thereof comes into contact with the inner periphery of the side plate 4 in a liquid-tight manner.

Thus, a constant amount of precompression is always given to the vibration isolating rubber body 1 by the pressing member 7, and in this state, the diaphragm membrane 2 can be assembled accurately and easily.

[0009]

FIG. 3 shows a liquid-filled anti-vibration mount manufactured by the apparatus of the present invention.
Is a container-like thick wall which is expanded and opened downward, and an upper plate 11 on which fixing bolts are erected is joined to the top surface thereof. A cylindrical side plate 4 is joined at its upper end to the opening periphery of the vibration isolating rubber body 1,
A partition plate 3 is disposed in the cylinder of the side plate 4 so as to partition the inner space up and down, and a main liquid chamber A having the vibration-proof rubber body 1 as a chamber wall is formed above the partition plate 3. ing. The center of the partition plate 3 is formed of a rubber film 32 having an arch cross section for absorbing high-frequency vibration, and the outer peripheral surface is formed with a throttle channel 31 that opens upward and downward at different positions in the circumferential direction. .

A rubber diaphragm film 2 is located below the partition plate 3, and the center of the diaphragm film 2 is curved in an upwardly arc shape substantially parallel to the lower surface of the partition plate 3. The diaphragm film 2 is located in the lower end opening of the side plate 4 and its outer periphery is
The partition plate 3 is in liquid-tight contact with the inner periphery and is in close contact with the outer peripheral lower surface of the partition plate 3. Thus, a sub liquid chamber B having the diaphragm film 2 as a chamber wall is formed below the partition plate 3, and communicates with the main liquid chamber A through a throttle channel 31. A container-shaped bottom plate 12 is provided below the diaphragm film 2, and its opening edge is fixed by caulking to the lower end of the side plate 4.
The closed space between the diaphragm membrane 2 and the bottom plate 12 is an air chamber C
It has become. The bottom plate 12 is fixed to the base by bolts erected on the lower surface.

When the vibrating body is mounted on the liquid-filled anti-vibration mount having such a structure, the anti-vibration rubber body 1 is compressed and deformed by the static load, and the sealing liquid in the main liquid chamber A flows into the sub-liquid chamber B. The diaphragm film 2 is deformed downward as shown by a chain line in the figure, and the central portion becomes substantially horizontal. When vibration is input in this state, the fluid flows from the main liquid chamber A to the auxiliary liquid chamber B via the throttle flow path 31 to cause vibration damping. At this time, the diaphragm film 2 moves the sealing liquid into and out of the auxiliary liquid chamber B. Deforms up and down according to.

By the way, when the liquid is sealed during the manufacture of the anti-vibration mount, if there is a change in the liquid amount, the diaphragm film 2 is not positioned close to the horizontal when a static load is applied, and the partition plate 3 or the bottom plate is not deformed due to vibration input. 12, the vibration damping action is impaired, or an excessive internal stress is generated in the diaphragm film 2 to lower the durability. In addition, if the diaphragm film 2 is not correctly assembled to the side plate 4, liquid leakage or the like occurs.

FIG. 1 shows an apparatus for manufacturing an anti-vibration mount in which the above problem is solved. In the figure, a fixed jig 5 in the form of a block is provided on the bottom surface of the liquid tank.
A guide wall 51 is formed all around the outer periphery of the upper surface, and the inner periphery is a horizontal receiving surface 5a. A guide hole 52 is formed at the center of the receiving surface 5a.
The anti-vibration rubber body 1 is turned upside down and held by inserting the bolt. The edge of the side plate 4 in which the partition plate 3 is provided and which is joined to the vibration isolating rubber body 1 is located close to the inner peripheral surface of the guide wall 51, and a stepped portion of the stopper surface 51 is provided below the fixed distance by a predetermined distance.
a is formed.

A movable jig 6 in the form of a block is provided above the fixed jig 5. The jig 6 is fixed to the tip of a vertically movable rod 64 and faces the fixed jig 5. ing.
Inside the jig 6, there is provided a suction passage 61 which branches in the middle and opens at a plurality of locations on the outer periphery of the lower surface. The suction passage 61 reaches a switching electromagnetic valve 62 provided outside the jig, and connects to the atmosphere and a diaphragm-type exhaust gas. It is selectively connected to the pump 63. A seal ring 65 is provided on the lower surface of the jig inside the opening of the suction passage 61, and when the suction passage 61 is evacuated along the diaphragm film 2 on the lower surface of the jig as shown in the figure, the diaphragm film 2 becomes an outer peripheral edge. Is held on the lower surface of the jig in a horizontal posture.

The movable side jig 6 is also provided with a liquid discharge passage 66 communicating the center and the side surface of the lower surface. A guide rod 72 is vertically provided at a plurality of positions on the outer periphery of the jig with the base end fixed to the projection of the top surface of the jig. . The pressing member 7 is urged downward by a coil spring 71 provided around the guide rod 72, and the inner peripheral stepped portion is in contact with the large-diameter stopper 73 at the tip of the guide rod.

In the manufacturing apparatus having the above structure, when the movable jig 6 is lowered, the notch on the front end side of the pushing member 7 comes into contact with the upper opening edge of the side plate 4 (the state shown in FIG. 1). Is pressed down, and the vibration-proof rubber body 1 is compressed and deformed. This compression deformation stops when the lower end opening edge of the side plate 4 comes into contact with the stopper surface 51a of the fixed side jig 5 as shown in FIG. 2, whereby a certain amount of preliminary compression is given. This amount of pre-compression is set equal to the amount of deformation of the vibration isolating rubber body 1 when a static load is applied to the vibrating body. Jig 6
As the pressing member 7 is restrained from moving further, the jig 6 descends while contracting and deforming the coil spring 72, and inserts the diaphragm film 2 adsorbed on its lower surface into the upper end opening of the side plate 4. I will position you. In this state, the outer periphery of the diaphragm film 2 comes into liquid-tight contact with the inner periphery of the side plate 4.

In the above process, the liquid existing between the center of the diaphragm film 2 and the lower surface of the jig 6 is discharged through the liquid discharge passage 66. After the diaphragm film 2 is positioned in the side plate 4, air is introduced into the suction passage 61 to eliminate the adsorption.

Thus, a constant pre-compression is always applied to the vibration-isolating rubber body 1 to prevent the liquid filling amount from fluctuating. When the static load of the vibrating body is applied, the center of the diaphragm film 2 is almost at the center. It becomes horizontal, and a sufficient range of vertical deformation movement at the time of vibration input is ensured, and a good vibration damping action is exhibited. Also,
Since the diaphragm film 2 is attracted to the lower surface of the jig and is assembled in the side plate 4 while maintaining a substantially horizontal posture, there is no occurrence of liquid leakage or the like.

[0019]

As described above, according to the liquid-filled anti-vibration mount manufacturing apparatus of the present invention, it is possible to easily assemble the mount reliably and to always obtain a good anti-vibration operation.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a manufacturing apparatus.

FIG. 2 is a sectional view of a main part of the manufacturing apparatus.

FIG. 3 is an overall sectional view of a liquid-filled anti-vibration mount.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vibration-proof rubber body 2 Diaphragm film 3 Partition plate 31 Throttle channel 4 Side plate 5 Fixed-side jig 6 Movable-side jig 61 Suction passage (holding part) 62 Solenoid valve (holding part) 63 Exhaust pump (holding part) 7 Push Member 71 Spring member

Claims (1)

(57) [Claims] An open end of a cylindrical side plate is joined to an opening periphery of a thick anti-vibration rubber body having a closed container shape, and the inside of the side plate is axially partitioned by a partition plate provided with a throttle channel. At the same time, the other end opening of the side plate is closed with a diaphragm film, and a main liquid chamber having a vibration-proof rubber body as a chamber wall and a sub-liquid chamber having a diaphragm film communicating with the above-described throttle channel as a chamber wall are provided. A fixed-side jig fixed to the bottom of the liquid tank and holding the anti-vibration rubber body with its opening facing upward, and a position above the fixed-side jig. The movable jig is provided with a holding portion for detachably adsorbing and holding the outer peripheral edge of the diaphragm film, and the movable jig is urged downward by a spring member. The pressing member is provided integrally with the pressing member during the lowering process of the movable jig. It presses the upper end opening edge of the side plate by, when the static load of the vibrating body vibration damping rubber member is applied
Rutotomoni added precompression corresponding to the amount of deformation of the vibration damping rubber member, the outer periphery of the diaphragm membrane into the inner side plate in the subsequent descent process and characterized in that allowed to insertion position in contact with the inner periphery of the liquid-tight manner plate Manufacturing equipment for liquid-filled anti-vibration mounts.