JP2004286068A - Enclosure device for enclosure liquid for liquid-enclosed mount, and method for manufacturing liquid-enclosed mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an enclosure device 3 for enclosure liquid for a liquid-enclosed mount compact. <P>SOLUTION: An opening/closing valve 55 on a deaerating line 34 is set to an opening state, a vacuum pump 39 is actuated to reduce pressure to predetermined pressure in a storage tank 36. The opening/closing valve 55 is then set in a closed state to deaerate enclosure liquid L to be injected into a workpiece W in the storage tank 36 that is sealed. As a nozzle 35 is set in a communicated state to an exhaust line 32, the vacuum pump 39 is actuated to eliminate air in the workpiece W. The nozzle 35 is then changed into a communicated state to an injection line 31, and the deaerated enclosure liquid L in the storage tank 36 is injected into the workpiece W. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing device that seals a sealing liquid in a liquid chamber of a mount work when manufacturing a liquid sealing mount, and a method for manufacturing a liquid sealing mount.
[0002]
[Prior art]
An engine mount is used to prevent vibrations from the engine from being transmitted to the body frame when the automobile engine is attached to the body frame. As this engine mount, a liquid sealed engine mount having a liquid chamber in which a sealed liquid is sealed is widely used. In this device, when the liquid chamber is compressed, the sealing liquid is caused to flow, thereby improving the vibration damping performance.
[0003]
When manufacturing such a liquid-enclosed mount, it is necessary to enclose the encapsulated liquid in the liquid chamber of the mount work (before the encapsulated liquid is encapsulated), but if air remains in the liquid chamber, the liquid chamber Even if compressed, the residual air is compressed, and the flow of the sealing liquid does not occur. For this reason, there arises a problem that sufficient anti-vibration performance is not exhibited, and a problem that abnormal noise occurs due to the movement of residual air in the liquid chamber.
[0004]
Thus, for example, Patent Document 1 discloses a method of removing air in a liquid chamber with a vacuum pump before enclosing the encapsulated liquid in the liquid chamber of the mount work, and thereafter enclosing the encapsulated liquid in the liquid chamber. Yes.
[0005]
In addition, by pre-gassing the sealed liquid to be sealed in the liquid chamber, it is possible to prevent the dissolved air dissolved in the sealed liquid from precipitating when the sealed liquid flows, and the air remains in the liquid chamber. It can prevent more reliably.
[0006]
As a general degassing method for removing air dissolved in the liquid, the liquid to be degassed is stored in a container to which a vacuum pump is connected, and the vacuum pump is operated to bring the container into a vacuum state. There is known a vacuum deaeration method in which air dissolved in a liquid is deposited (see, for example, Patent Documents 2 and 3). In Patent Document 2, the inside of the container is divided into a liquid passing part (part through which the liquid passes) and a pressure reducing part by a gas-liquid separation membrane. In such a vacuum degassing method, the vacuum pump is always operated during the degassing of the liquid so as to maintain the vacuum state in the container.
[0007]
[Patent Document 1]
JP 2001-241489 A
[Patent Document 2]
JP 2000-350902 A
[Patent Document 3]
JP 2000-342903 A
[0008]
[Problems to be solved by the invention]
FIG. 3 shows a configuration of a conventional sealing device 30 that seals the sealing liquid in the liquid chamber of the mount work. The sealing device 30 includes an injection line 31 for injecting the sealed liquid L into the liquid chamber 24 of the mount work W, a deaeration line 34 for decompressing the storage tank 36 for storing the sealed liquid L, and a liquid chamber 24. An exhaust line 32 for exhausting air and a recovery line 33 for recovering the sealed liquid L remaining in the nozzle 35 connected to the liquid chamber 24 are configured.
[0009]
The injection line 31 is connected to the switching valve 4 connected to the nozzle 35 while being connected to the lower part of the storage tank 36.
[0010]
The deaeration line 34 is connected to an upper portion of the storage tank 36 and is connected to a first vacuum pump 38. A gas-liquid separation tank 37 is interposed on the deaeration line 38. ing.
[0011]
The exhaust line 32 is connected to the second vacuum pump 39 while being connected to the switching valve 4.
[0012]
The recovery line 33 is connected between the storage tank 36 and the separation tank 37 in the deaeration line 34 and is connected to the switching valve 4.
[0013]
The switching valve 4 is an open / close valve 41 provided on each of the lines 31 to 33 in order to switch between a state in which the nozzle 35 is in communication with the injection line 31 side, the exhaust line 32 side or the recovery line 33 side and a closed state. To 43.
[0014]
In the sealing device 30 having this configuration, first, the storage tank 36 is evacuated by operating the first vacuum pump 38, thereby degassing the sealing liquid L stored in the storage tank 36. To do. While the sealed liquid L is being degassed, the first vacuum pump 38 continues to operate.
[0015]
When the degassing of the sealing liquid is completed, the nozzle 35 is connected to the exhaust line 32 side by the switching valve 4 and the second vacuum pump 39 is operated. Thus, the air in the liquid chamber 24 of the mount work W is sucked through the nozzle 35.
[0016]
Then, by switching the switching valve 4, the nozzle 35 communicates with the injection line 31, whereby the degassed sealed liquid L in the storage tank 36 is injected into the liquid chamber 24 through the nozzle 35. Thus, when a predetermined amount of the sealing liquid L is injected into the liquid chamber 24, the opening of the liquid chamber 24 is closed, thereby completing the liquid sealing mount.
[0017]
Before injecting the sealing liquid L into the next mount work W, the nozzle 35 is connected to the recovery line 33 side by switching the switching valve 4 in order to recover the sealing liquid L remaining in the nozzle 35. The first vacuum pump 38 is activated. As a result, the sealing liquid L remaining in the nozzle 35 is sucked and stored in the separation tank 37.
[0018]
As described above, in the conventional sealing device 30, the first vacuum pump 38 operated in each of the degassing of the sealing liquid L and the recovery of the sealing liquid L remaining in the nozzle 35, and the liquid chamber 24 of the workpiece W are provided. At least two vacuum pumps are required with a second vacuum pump 39 that is activated to evacuate the air.
[0019]
This is because, in order to exhaust the air in the liquid chamber 24 of the mount work W, it is required to depressurize the liquid chamber 24 to a predetermined high vacuum pressure. While it is necessary to use a high-pressure vacuum pump, in order to degas the sealed liquid L, the inside of the storage tank 36 has only to be reduced to a predetermined medium vacuum pressure. A low-pressure vacuum pump is sufficient. Another reason is that a vacuum pump with low energy consumption is preferable because the first vacuum pump 38 must continue to operate while the sealed liquid L is being deaerated. Further, since it takes a long time to degas the sealed liquid L, two storage tanks 36 are provided from the viewpoint of production efficiency, and the sealed liquid L in one storage tank 36 is being sealed in the mount work W. In addition, the sealed liquid L in the other storage tank 36 is degassed. In this case, one vacuum pump is required to degas the sealed liquid L, while another vacuum pump is required to exhaust the air in the liquid chamber 24.
[0020]
Thus, in the conventional sealing device 30, since at least two vacuum pumps are required, the sealing device 30 is increased in size and the facility cost of the sealing device 30 is increased. Moreover, there is also a disadvantage that the energy consumption is increased due to the large number of vacuum pumps.
[0021]
The present invention has been made in view of such circumstances, and the main object of the present invention is to downsize the sealing device for the sealing liquid for the liquid sealing mount, and at the same time consume the manufacturing of the liquid sealing mount. The purpose is to reduce the amount of energy consumed.
[0022]
[Means for Solving the Problems]
The apparatus of the present invention is an enclosing apparatus for a liquid enclosing mount that encloses an enclosing liquid in a liquid chamber of a mount work.
[0023]
The sealing device includes a nozzle connected to the liquid chamber of the mount work, a storage tank for storing a sealing liquid to be injected into the liquid chamber, a vacuum pump for removing air in the liquid chamber before the sealing liquid injection, A state in which the injection line connected to the storage tank and an exhaust line connected to the vacuum pump are connected to the nozzle, and the nozzle is connected to the injection line side or the exhaust line side, and a closed state. A switching valve for switching to, a deaeration line for communicating the vacuum pump and the storage tank, and depressurizing the inside of the storage tank by the operation of the vacuum pump, and an opening / closing valve interposed on the deaeration line Prepare.
[0024]
The sealing device opens the open / close valve provided on the degassing line and operates the vacuum pump to depressurize the storage tank to a predetermined pressure, and then closes the open / close valve. By setting the state, the sealed liquid to be injected into the liquid chamber in the sealed storage tank is degassed.
[0025]
In addition, the sealing device removes air in the liquid chamber by operating the vacuum pump with the nozzle connected to the exhaust line side by switching the switching valve, and then switching the switching valve to switch the switching valve. The nozzle is connected to the injection line side, and the sealed liquid deaerated in the storage tank is injected into the liquid chamber.
[0026]
According to this configuration, the storage tank depressurized to a predetermined pressure by the operation of the vacuum pump is used as a sealed space, and the sealed liquid stored in the storage tank in this state is deaerated. While the sealing liquid is being degassed, the vacuum pump may be operated or stopped.
[0027]
In addition, since the sealed liquid is deaerated in the sealed storage tank in this way, in order to sufficiently degas the sealed liquid, it is necessary to sufficiently reduce the pressure in the storage tank. A high-pressure vacuum pump is preferable. Furthermore, the vacuum pump need not always be operated when the sealed liquid is degassed, so that a high-pressure vacuum pump with relatively large energy consumption can be obtained. A high-pressure vacuum pump can be used to remove air in the liquid chamber of the mount work. Therefore, in the sealing device, the air in the liquid chamber is removed by operating the vacuum pump used for depressurization of the storage tank with the nozzle connected to the exhaust line by switching the switching valve.
[0028]
In this way, the sealed liquid is deaerated by sealing the storage tank and separated from the exhaust system, so that at least two conventional vacuum pumps can be used for degassing the sealed liquid and exhausting the liquid chamber. It can be used for both purposes. As a result, since the sealing device of the present invention has only one vacuum pump, the size of the sealing device can be reduced. This is the same even if there are two or more storage tanks. That is, the degassing of the sealed liquid is performed in a state where the open / close valve is closed and separated from the vacuum pump, so that the sealed liquid in one of the two storage tanks must be sealed in the mount work. Even when a vacuum pump is used for exhausting indoor air, it is possible to degas the sealed liquid in the other tank. Further, energy saving can be achieved by reducing the number of vacuum pumps.
[0029]
The sealing device further includes a recovery line that connects the switching valve and the vacuum pump to each other and includes a recovery tank that recovers the sealing liquid remaining in the nozzle, and the switching valve connects the nozzle to the injection line. You may comprise so that it may switch to the state connected to the side, an exhaust line side, or the collection | recovery line side, and a closed state.
[0030]
In this case, the enclosing device depressurizes the inside of the recovery tank by operating the vacuum pump, and then separates it from the vacuum pump, and then connects the nozzle to the recovery line side by switching the switching valve. In this state, the sealed liquid remaining in the nozzle may be sucked into the recovery tank due to the negative pressure of the recovery tank.
[0031]
According to this configuration, the inside of the recovery tank is depressurized by the vacuum pump that is used for both the degassing of the sealed liquid and the exhaust of the liquid chamber, and the sealed liquid remaining in the nozzle is sucked by the negative pressure of the recovery tank. Note that the recovery tank may be depressurized simultaneously with depressurization of the storage tank.
[0032]
The manufacturing method of the present invention is a manufacturing method for manufacturing a liquid-sealed mount by enclosing a sealed liquid in a liquid chamber of a mount work.
[0033]
The manufacturing method includes a step of degassing the sealed liquid by setting a reduced pressure inside the storage tank storing the sealed liquid, and a step of removing air in the liquid chamber of the mount work through a nozzle. And injecting the sealed liquid deaerated in the storage tank into the liquid chamber of the mount work through the nozzle.
[0034]
In the above manufacturing method, after the sealing liquid is injected into the liquid chamber of the mount work, the sealing liquid remaining in the nozzle is sucked into the recovery tank by the negative pressure of the recovery tank connected to the nozzle and the inside of which is depressurized. The method may further include the step of:
[0035]
【The invention's effect】
As described above, according to the sealing device and the sealing method of the liquid-sealing mount for the liquid-sealing mount of the present invention, it is possible to degas the sealing liquid by sealing the storage tank so that one vacuum pump Thus, the degassing and the exhaust in the mount can be used together, so that the sealing device can be reduced in size and the equipment cost can be reduced. In addition, energy saving can be achieved by reducing the number of vacuum pumps compared to the prior art.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0037]
FIG. 1 shows a vertical engine mount 10 as one of the liquid-filled mounts. The liquid-filled engine mount 10 is opposed to a metal mounting member 11 to which the engine is mounted and the mounting member 11. And a metal support member 12 supported by a vehicle body frame and the like, and a rubber elastic body 13 that connects the attachment member 11 and the support member 12 to each other.
[0038]
The mounting member 11 is formed in a substantially cylindrical shape having a through-hole penetrating in the vertical direction, and an intermediate portion connected to the upper end portion 11a has an enlarged diameter whose outer diameter is larger than the outer diameter of the upper end portion 11a. A lower end portion connected to the enlarged diameter portion is a tapered portion 11c whose outer diameter is reduced toward the lower end.
[0039]
In addition, the through hole of the mounting member 11 is a bolt hole 14 in which a screw groove having a relatively large hole diameter is formed, corresponding to the upper end portion 11a and the enlarged diameter portion 11b, and corresponds to the tapered portion 11c. The portion is a liquid injection hole 15 having a relatively small hole diameter. By screwing an engine-side bolt into the bolt hole 14, the liquid-filled engine mount 10 is attached to the engine. Further, a metal ball 16 is fitted and held in the liquid injection hole 15, thereby closing the through hole.
[0040]
At the lower end of the mounting member 11, a through-hole that is continuous with the liquid injection hole is formed at the center position, and an umbrella-shaped member 17 that spreads outward in the radial direction is attached by caulking.
[0041]
The support member 12 is formed in a substantially cylindrical shape, and is disposed below the attachment member 11 so as to be coaxial with the attachment member 11. The lower end of the support member 12 is a caulking portion 12a that is bent inward in the radial direction over the entire circumference.
[0042]
The rubber elastic body 13 is formed in a substantially conical shape so as to connect the tapered portion 11c of the mounting member 11 and the upper end opening portion of the support member 12 to each other. The rubber elastic body 13 is integrally formed with the support member 11 and the support member 12 by vulcanization integrated molding. A rubber layer 18 extending from the lower end position of the rubber elastic body 13 to the lower end side of the support member 12 is formed while covering the inner peripheral surface of the support member 12. A step portion 18a is provided at a substantially intermediate position.
[0043]
A resin-made orifice member 19 is fitted into the step portion 18a of the rubber layer 18 from below, and the upper peripheral edge of the orifice member 19 abuts on the step portion 18a, thereby positioning the orifice member 19. Has been made.
[0044]
Further, a rubber diaphragm 23 is disposed at a position below the orifice member 19, and the peripheral portion of the diaphragm 23 is connected to the lower surface of the orifice member 19 and the caulking portion 12 a of the mounting member 12. It is pinched by. A metal ring member 23 a is embedded in the peripheral edge of the diaphragm 23 in order to maintain the shape of the diaphragm 23.
[0045]
In this way, the rubber elastic body 13, the rubber layer 18, and the diaphragm 23 define a liquid chamber 24 in which the sealing liquid L is sealed.
[0046]
The liquid chamber 24 is divided by the orifice member 19 into a main liquid chamber 24a on the mounting member 11 side and a sub liquid chamber 24b on the diaphragm 23 side. Both the liquid chambers 24a and 24b are divided into the orifice member. Communicating with an orifice 20 formed in a spiral on the periphery of 19.
[0047]
The orifice member 19 includes a main body portion 19a in which the orifice 20 is formed, and a disk-shaped lid portion 19b provided in contact with the upper surface of the main body portion 19a.
[0048]
A movable plate recess 21 is formed at the center of the upper surface of the main body 19a, and a through hole is formed at the center of the recess 21. Similarly, a through hole is formed at the center of the lid portion 19b. The concave portion 21 is a portion into which a movable plate 22 for absorbing high-frequency vibrations is inserted. With the movable plate 22 inserted into the concave portion 21, the lid portion 19b is provided on the upper surface of the main body portion 19a. The movable plate 22 is prevented from falling off.
[0049]
As shown in FIG. 1, the diaphragm 23 normally has a shape in which the central portion is immersed in the orifice member 19 side, but the sealed liquid is introduced from the main liquid chamber 24 a into the sub liquid chamber 24 b through the orifice 20. When a large amount of L flows in, as shown by a two-dot chain line in FIG. 1, the central portion swells downward.
[0050]
In the liquid-filled engine mount 10 having the above-described configuration, the inertia force of the sealed liquid L when the liquid chamber 24 is deformed and the sealed liquid L moves back and forth inside the orifice 20 is used as a vibration damping force, whereby the vibration of the engine is reduced to the body frame. It is designed to prevent it from being transmitted to. Note that diethylene glycol is suitable as the liquid to be sealed in the liquid-filled engine mount 20.
[0051]
Next, a method for manufacturing the liquid-filled engine mount 10 will be described. Here, first, the enclosing device 3 for enclosing the encapsulated liquid in the mount work (before the encapsulated liquid is encapsulated in the liquid chamber 24) will be described with reference to FIG. A manufacturing procedure of the used liquid-filled engine mount 10 will be described.
[0052]
-Structure of sealing device-
The sealing device 3 is for sealing the sealing liquid L in the liquid chamber 24 of the liquid sealing engine mount 10 (mount work W) separately prepared by vulcanization integrated molding. The sealing device 3 includes first and second storage tanks 36a and 36b as the storage tank 36 that stores the sealed liquid L. Each storage tank 36a, 36b is disposed at a higher position than the mounting table 90 on which the mount work W is mounted.
[0053]
A supply line 51 for supplying the sealed liquid L to the tanks 36a and 36b is connected to the lower portions of the storage tanks 36a and 36b. On the lines 51, electromagnetic opening / closing valves 52a and 52b are provided. Has been. The supply line 51 is connected to a supply device (not shown), and the filled liquid L is supplied to the storage tanks 36 a and 36 b via the line 51.
[0054]
Further, drain valves 52c and 52d and injection lines 31a and 31b connected to a valve unit 4 described later are connected to the lower portions of the storage tanks 36a and 36b. Opening and closing valves 31c and 31d are interposed in this.
[0055]
At the upper part of each of the storage tanks 36a and 36b, atmospheric communication lines 53a and 53b communicating with the atmosphere and a deaeration line 34 communicating with the vacuum pump 39 are connected, and the atmospheric communication lines 53a and 53b are connected to the atmospheric communication lines 53a and 53b. Electromagnetic switching valves 54a and 54b are interposed, and electromagnetic switching valves 55a and 55b are also interposed in the deaeration line 34.
[0056]
As described above, the vacuum pump 39 is connected to the deaeration line 34, and the separation tank 37 and the storage tanks 36 a and 36 b are connected to the line 34 on the line 34. A vacuum regulator 56 and a vacuum gauge 57 are provided in this order. The separation tank 37 separates gas and liquid, and an open valve 58 is attached to the upper part thereof, and a drain valve 59 is attached to the lower part thereof.
[0057]
An exhaust line 32 is connected between the separation tank 37 and the vacuum regulator 56 in the deaeration line 34. As will be described later, the exhaust line 32 is connected to the valve unit 4 via a vacuum pressure switch 61 for monitoring the pressure in the liquid chamber 24 of the mount work W.
[0058]
A recovery line 33 is connected between the vacuum gauge 57 and the storage tanks 36a and 36b in the deaeration line 34. The recovery line 33 is connected to the valve unit 4 via a recovery tank 62 that recovers and stores the sealed liquid L remaining in the nozzle 35. The recovery tank 62 has the same configuration as the separation tank 37, and an open valve 63 is attached to the upper part thereof, and a drain valve 64 is attached to the lower part thereof.
[0059]
The valve unit 4 is configured to connect the four lines of the two injection lines 31a and 31b, the exhaust line 32, and the recovery line 33 to the nozzle 35, and on each of the lines 31 to 33, Open / close valves 41a, 41b, 42, 43 that are opened and closed by air cylinders 71a, 71b, 72, 73 are provided. The valve unit 4 having the four open / close valves 41 to 43 constitutes a switching valve for switching the nozzle 35 between a state in which the nozzle 35 communicates with the injection line 31 side, the exhaust line 32 side or the recovery line 33 side and a closed state. .
[0060]
The air cylinders 71 to 73 are connected to an air supply line 80 via electromagnetic switching valves 81a, 81b, 82, and 83. The air supply line 80 is connected to an air supply device via a filter regulator 84. (Not shown). The mounting table 90 is configured to be movable in the vertical direction by an air cylinder 85. When the sealing liquid L is sealed in the mount work W, the mounting table 90 is raised by the air cylinder 85, and the mounting work W placed on the mounting table 90 is pressed against the nozzle 35. The air cylinder 85 is also connected to the air supply line 80 via an electromagnetic switching valve 86.
[0061]
−Procedure for manufacturing liquid-filled mount−
Next, the manufacturing procedure of the liquid enclosure mount 10 will be described. This manufacturing procedure includes a process of manufacturing the mount work W and a process of sealing the sealing liquid L in the liquid chamber 24 of the mount work W.
[0062]
(Manufacturing process of mount work)
The mount work W first sets the mounting member 11 and the support member 12 (the caulking portion 12a is not formed at this time) in a mold, and a predetermined amount of unapplied rubber which becomes the rubber elastic body 13 and the rubber layer 18. After the vulcanized rubber composition is also set in the mold, they are heated and pressurized to be integrally vulcanized. At this time, a vulcanized adhesive is applied to contact portions of the attachment member 11 and the support member 12 with the rubber elastic body 13 and the rubber layer 18.
[0063]
And the umbrella-shaped member 17 is crimped and fastened to the front-end | tip of the attachment member 11 of the said integral formation.
[0064]
Further, the movable plate 22 is fitted into the movable plate concave portion 21 of the main body portion 19a of the orifice member 19, and the lid portion 19b is placed thereon to constitute the orifice member 19. Then, the orifice member 19 is fitted into the rubber layer 18 from the lid portion 19b side, and positioning is performed by bringing the upper surface periphery into contact with the step portion 18a.
[0065]
Subsequently, the diaphragm 23 is fitted so that the peripheral edge thereof is in contact with the peripheral edge of the lower surface of the orifice member 19.
[0066]
Then, the lower portion of the support member 12 is bent inward over the entire circumference to form a caulking portion 12a. Form. As described above, the mount work W without liquid filling is configured.
[0067]
(Encapsulation process of encapsulated liquid)
The sealing process of the sealing liquid L with respect to the mount work W was performed by degassing the process of degassing the sealing liquid L, exhausting the air in the liquid chamber 24 of the mount work W, using the sealing device 3 described above. It consists of a step of sealing the sealing liquid L in the liquid chamber 24 of the mount work W and a step of recovering the sealing liquid L remaining in the nozzle 35.
[0068]
<Deaeration process>
The degassing step is a step of degassing the filled liquid L in the storage tank 36, and the degassing is alternately performed in the first and second storage tanks 36a and 36b. That is, during the sealing process in which the sealing liquid L deaerated in one tank 36 is sealed in the mount work W, the sealing liquid L is deaerated in the other tank 36. In the following description, the first and second storage tanks 36a and 36b are simply referred to as the storage tank 36 without being distinguished from each other. In addition, it is assumed that the filled liquid has already been stored in the storage tank 36.
[0069]
First, the electromagnetic opening / closing valve 55 provided on the deaeration line 34 is opened and the vacuum pump 39 is operated to monitor the pressure in the storage tank 36 (and the recovery tank 62) by the vacuum gauge 57. Then, the pressure in the storage tank 36 is lowered. All other valves provided in the storage tank 36 are closed. When the inside of the storage tank 36 reaches a predetermined high vacuum pressure, the electromagnetic open / close valve 55 is closed to make the inside of the storage tank 36 a sealed space. Thus, the sealed liquid L is deaerated for a predetermined time in the sealed storage tank 36. As described above, the pressure necessary for degassing the sealing liquid (diethylene glycol) is a medium vacuum pressure, but the storage tank 36 is sealed by making the pressure in the storage tank 36 considerably lower than the medium vacuum pressure. However, the sealing liquid L can be sufficiently degassed.
[0070]
By operating the vacuum pump 39, the inside of the collection tank 62 is decompressed together with the storage tank 36. Even if the recovery tank 62 is separated from the vacuum pump 39, the recovery tank 62 maintains the reduced pressure state.
[0071]
<Exhaust process>
The mount work W is placed on the placement table 90, and the attachment member 11 of the work W is pressed against the nozzle 35 by the air cylinder 85. In this state, only the open / close valve 42 on the exhaust line 32 in the valve unit 4 is opened and the vacuum pump 39 is operated. Thus, the air in the liquid chamber 24 of the workpiece W is sucked while the vacuum pressure switch 61 is monitored, and the air in the liquid chamber 24 is exhausted. For example, the pressure in the liquid chamber 24 is set to a predetermined high vacuum pressure.
[0072]
<Encapsulation process>
When the air in the liquid chamber 24 of the mount work W is exhausted, the open / close valve 42 on the exhaust line 32 in the valve unit 4 is closed and connected to a storage tank 36 for storing the degassed sealed liquid L. The open / close valve 41 on the injection line 31 is opened. At this time, the storage tank 36 opens the open / close valve 54 on the atmosphere communication line 53 to open to the atmosphere. Thus, the sealed liquid L in the storage tank 36 is injected into the liquid chamber 24 of the mount work W through the nozzle 35 due to the pressure difference between the storage tank 36 and the liquid chamber 24. When a predetermined amount of the sealing liquid L is injected into the workpiece W, the opening / closing valve 41 is closed and the injection of the sealing liquid L is completed.
[0073]
In this way, when the sealing liquid L is injected into the workpiece W, the workpiece W is separated from the nozzle 35 and the metal ball 16 is driven into the liquid injection hole 15. In this way, the liquid chamber 24 is sealed, whereby the liquid-filled engine mount 10 is completed.
[0074]
<Recovery process>
The recovery process is a process that is executed before the exhaust process for the next mount work W, and is a process that recovers the sealing liquid L remaining in the nozzle 35 by performing the above-described injection process. Specifically, the open / close valve 43 on the recovery line 33 in the valve unit 4 is opened. As a result, the sealed liquid L remaining in the nozzle 35 is sucked by the negative pressure in the recovery tank 62, and the sealed liquid L is stored in the recovery tank 62.
[0075]
If the recovery process is performed in this way, the next mount work W is executed in the order of the exhaust process and the sealing process to manufacture the next liquid-filled engine mount 10.
[0076]
As described above, since the sealing device 3 includes only one vacuum pump 39 that is used both for degassing the sealed liquid L and for exhausting the liquid chamber 24, the sealing device 3 can be downsized. As well as equipment costs can be reduced. In addition, energy saving can be achieved by reducing the number of vacuum pumps.
[0077]
Further, by providing the first and second storage tanks 36a and 36b, the sealed liquid L deaerated in the other tank 36 is transferred to the mount work W while the sealed liquid L is degassed in the one tank 36. Since it can be enclosed, production efficiency can be improved.
[0078]
-Other embodiments-
In addition, this invention is not limited to the said embodiment, Other various embodiment is included. In other words, the above embodiment is a mode for manufacturing the vertical liquid-filled engine mount 10, but is not particularly limited thereto, and the sealing device and the manufacturing method of the present invention can be applied to other liquid-filled mounts. Applicable.
[0079]
Moreover, although the said enclosure 3 has two tanks, the 1st and 2nd storage tanks 36a and 36b, as the storage tank 36, the storage tank 36 may be one.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a liquid-filled engine mount.
FIG. 2 is a configuration diagram showing a sealing device for a sealing liquid.
FIG. 3 is a configuration diagram showing a conventional sealing device.
[Explanation of symbols]
10 Liquid-filled engine mount (liquid-filled mount)
24 liquid chamber
3 Enclosing device
31 Injection line
32 Exhaust line
33 Collection line
34 Deaeration line
35 nozzles
36, 36a, 36b Storage tank
39 Vacuum pump
4 Valve unit (switching valve)
55a, 55b Open / close valve (on deaeration line)
62 Collection tank
L Filling liquid
W Mount Work

Claims (4)

An enclosing device for a liquid enclosing mount that encloses an enclosing liquid in a liquid chamber of a mount work,
A nozzle connected to the liquid chamber of the mount work;
A storage tank for storing a sealing liquid to be injected into the liquid chamber;
A vacuum pump for removing air in the liquid chamber before the filling liquid is injected;
A state in which the injection line connected to the storage tank and an exhaust line connected to the vacuum pump are connected to the nozzle, and the nozzle is connected to the injection line side or the exhaust line side, and a closed state. A switching valve to switch to
A deaeration line for communicating the vacuum pump and the storage tank and depressurizing the storage tank by operating the vacuum pump;
An open / close valve interposed on the deaeration line,
By opening the open / close valve provided on the deaeration line and operating the vacuum pump, the inside of the storage tank is depressurized to a predetermined pressure, and then the open / close valve is closed to close the tank. Configured to degas the sealed liquid to be injected into the liquid chamber in the storage tank,
The air in the liquid chamber is removed by operating the vacuum pump with the nozzle connected to the exhaust line by switching the switching valve, and then the nozzle is connected to the injection line by switching the switching valve. An encapsulating apparatus for encapsulating liquid for a liquid encapsulating mount, wherein the encapsulated liquid degassed in the storage tank is poured into the liquid chamber in a state where the liquid is mounted. In claim 1,
A switching line and a vacuum pump are connected to each other, and further includes a recovery line provided with a recovery tank for recovering the sealing liquid remaining in the nozzle,
The switching valve is configured to switch the nozzle between a closed state and a state where the nozzle communicates with the injection line side, the exhaust line side or the recovery line side,
After depressurizing the inside of the recovery tank by operating the vacuum pump, the nozzle is brought into communication with the recovery line by switching the switching valve, and the sealed liquid remaining in the nozzle due to the negative pressure of the recovery tank is An enclosing device for encapsulating liquid for a liquid enclosing mount, wherein the enclosing device is configured to suck into a recovery tank. A manufacturing method for manufacturing a liquid-sealed mount by enclosing a sealed liquid in a liquid chamber of a mount work,
Degassing the sealed liquid by making the sealed space in the storage tank storing the sealed liquid depressurized;
Removing the air in the liquid chamber of the mount work through a nozzle;
And a step of injecting the sealed liquid degassed in the storage tank through the nozzle into the liquid chamber of the mount work. In claim 3,
The method further includes the step of sucking the sealing liquid remaining in the nozzle after injecting the sealing liquid into the liquid chamber of the mount work into the recovery tank by the negative pressure of the recovery tank connected to the nozzle and having an internal pressure reduced. A method for manufacturing a liquid-filled mount, characterized in that:

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