JP2009121582A - Damper unit and molding system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique to enhance the maintenance easiness of a damper unit. <P>SOLUTION: The damper unit having internally a plurality of damping parts accommodating fluid includes a supply piping system composed of main supply pipes as piping to supply fluid to the damping parts from a liquid supply source and delivering the fluid from the liquid supply source and a plurality of branch pipes diverged from the main supply pipes and connected with the respective damping parts, a pressure measuring part to measure the internal pressures of the damping parts, and a shutoff part to shut off the fluid flowing between the plurality of damping parts communicated by the supply piping. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shock absorber.

  Since a fuel cell manufacturing plant includes a plurality of manufacturing facilities, vibrations caused by the operation of each facility may be transmitted to other facilities. For example, a molding machine that molds a metal separator of a fuel cell has a complicated mold shape. Therefore, when it is vibrated, there is a problem that the mold does not mesh or is not accurate. Therefore, conventionally, each equipment is provided with a vibration isolator that absorbs vibration. Some vibration isolators use a rubber tube (so-called air spring) filled with air (see, for example, Patent Document 1).

  When the air spring is used in this way, air may leak from a hole formed in the rubber tube due to deterioration of the rubber. Therefore, regularly check for air leaks. At the time of inspection, the pressure of the air spring is measured by stopping the supply of air to the air spring and preventing air from being discharged from the air spring. If a pressure drop occurs, it can be seen that an air leak has occurred.

JP 2000-193010 A JP 2004-202524 A

  By the way, when the above-described manufacturing equipment is heavy, a vibration isolator having a plurality of air springs is used. In such a vibration isolator, conventionally, a pipe for supplying air to each air spring communicates between the plurality of air springs. Then, since the pressures in the plurality of air springs become the same, only one pressure gauge is provided for the plurality of air springs.

  In such an anti-vibration device, when air leakage is checked, if the pressure measured by one pressure gauge decreases, at least one of the plurality of air springs causes air leakage. However, it is difficult to determine which air spring is leaking air.

  Such a problem is not limited to the vibration isolator, but is common to shock absorbers having a plurality of shock absorbers having fluid inside, such as shock absorbers for reducing shocks caused by components operating in the facility. It was a problem.

  Therefore, the present invention has been made in view of such a problem, and an object thereof is to provide a technique for improving the maintainability of the shock absorber.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1] A shock absorber provided with a plurality of shock absorbers having fluid therein,
A pipe for supplying the fluid from the fluid supply source to each of the buffer units; an original supply pipe for sending the fluid from the fluid supply source; A plurality of branch pipes connected to each of the supply pipes,
A pressure measuring unit for measuring an internal pressure of each of the plurality of buffer units;
A blocking section capable of blocking the flow of the fluid between the plurality of buffer sections communicated by the supply pipe;
A shock absorber characterized by comprising.

  In the shock absorber of Application Example 1, each shock absorber communicates with each other via a supply pipe. Therefore, normally, the fluid can go back and forth between the buffer parts via the supply pipe, and the buffer parts that communicate with each other are maintained at the same internal pressure. However, if the fluid flow between the buffer portions is blocked by the blocking portion, the internal pressure of each buffer portion is not necessarily kept the same. For example, in the case where fluid leaks from one buffer section, the flow of fluid between the buffer sections is blocked by the blocking section, and when the supply of fluid to each buffer section is stopped, the internal pressure of the buffer section Decreases. Therefore, when checking for fluid leakage in the buffer section, the flow of fluid between the supply pipes is blocked by the blocking section and the supply of fluid to each buffer section is stopped, and each buffer is checked by the pressure measuring section. If the internal pressure of the part is confirmed, the buffer part in which the fluid leaks can be easily specified, and the maintainability can be improved.

[Application Example 2] In the shock absorber according to Application Example 1,
The blocking part is
One shock absorber is provided for each of the branch pipes.

[Application Example 3] In the shock absorber according to Application Example 2,
The blocking part is
A shock absorber characterized by being a check valve.

  In this specification, the check valve is a check valve that has a function of flowing a fluid in one direction and not flowing in the opposite direction. When the check valve is used, for example, the fluid flows in the direction in which the fluid is supplied to the buffer portion, but the fluid does not flow in the direction in which the fluid flows out from the buffer portion. Therefore, by using the check valve, the flow in the direction in which the fluid flows out from the buffer portion is always interrupted without operating the shut-off portion and shutting off the fluid flow at each inspection. Therefore, compared with the case where a check valve is not used, forgetting to release the block of the fluid flow by the blocking unit after inspection can reduce the possibility of problems such as the shock absorber not operating. it can.

  In addition, this invention can be implement | achieved with various forms, for example, can be implement | achieved with various forms, such as a molding system provided with a molding machine and a buffer device, and an engine system provided with an engine and a buffer device.

A. First embodiment:
A1. Example configuration:
A1-1. Overview of overall configuration:
FIG. 1 is an explanatory diagram schematically showing the configuration of a vibration isolation device 100 as a first embodiment of the present invention. In the present embodiment, the vibration isolator 100 is installed between the molding machine 1000 that molds a metal separator that is a component of the fuel cell stack and the floor surface F, and is provided with the six first The molding machine 1000 is supported by the air spring 11 and the second air spring 12 (described later). As shown in the figure, the vibration isolator 100 is roughly divided into first to third systems and an air supply unit 50. Air is supplied from the air supply unit 50 to each system.

  FIG. 2 is an explanatory view showing a planar arrangement of the first air spring 11 and the second air spring 12 with respect to the molding machine 1000 described above. Each system is shown surrounded by a broken line. As shown in the drawing, the first air spring 11 and the second air spring 12 are arranged evenly distributed so that the molding machine 1000 does not tilt. In FIG. 1, in order to clarify the configuration of the vibration isolation device 100, the first to third systems are shown in a horizontal row.

A1-2. Explanation of each part:
Since the first to third systems have the same configuration, the first system will be described with reference to FIG. 1, and description of the second and third systems will be omitted. The first system includes a first air spring 11, a second air spring 12, a first supply pipe 21, a second supply pipe 22, a first check valve 211, and a second reverse valve. A stop valve 212, a first pressure gauge 231, a second pressure gauge 232, a branch pipe 30, a height sensor 60, and a pressure adjustment valve 62 are mainly provided. In the present embodiment, the first air spring 11 and the second air spring 12 are provided in the buffer portion in the claims, the first supply pipe 21 and the second supply pipe 22 in the branch pipe in the claims, The first check valve 211 and the second check valve 212 correspond to the shut-off part in the claims, and the first pressure gauge 231 and the second pressure gauge 232 correspond to the pressure measurement part in the claims, respectively. .

  Since the first and second air springs 11 and 12 have the same configuration, the first air spring 11 will be described, and the description of the second air spring 12 will be omitted. FIG. 3 is an explanatory diagram for explaining the configuration of the first air spring 11. 3A is a cross-sectional view showing the first air spring 11 in a state where there is no vibration of the molding machine 1000 and the floor surface F, and FIG. 3B is a plan view of the upper plate 110 viewed from the rubber tube 114 side. (C) is the top view which looked at the lower board 112 from the rubber tube 114 side, (d) is sectional drawing which shows the 1st air spring 11 of the state deform | transformed by the vibration.

  As shown in FIG. 3A, the first air spring 11 includes an upper plate 110, a rubber tube 114, and a lower plate 112. As shown in FIG. 3 (b), the upper plate 110 has a circular plate 110s having a substantially planar shape and a column 110p protruding from the center of the circular plate 110s, and is made of stainless steel. As shown in FIG. 3 (c), the lower plate 112 includes a circular plate 112s having the same outer diameter as the circular plate 110s and an inner diameter that is the same as the outer diameter of the first supply pipe 21, and a circular plate 112s. And a cylindrical portion 112p having a cylindrical shape whose inner diameter is larger than the inner diameter of the disc 112s, and is made of stainless steel. The rubber tube 114 is a rubber tube having a cylindrical shape whose outer diameter is slightly smaller than the diameter of the disk 110s.

  The first air spring 11 has a built-in structure, and the elasticity of the rubber tube 114 makes use of the elasticity of the rubber tube 114 in the grooves (not shown) formed in the upper plate 110 and the lower plate 112. It is completed by fitting the end. As shown in the drawing, a first supply pipe 21 is connected to the lower plate 112, and air is sent into the rubber tube 114 via the first supply pipe 21.

  For example, when the molding machine 1000 vibrates during operation, as shown in FIG. 3D, the rubber tube 114 is deformed by the vibration of the first air spring 11 to absorb the vibration. Thereby, it is possible to suppress the vibration of the molding machine 1000 from propagating to the floor surface F. Further, when other equipment is installed on the same floor surface F, when the vibration of the other equipment propagates through the floor surface F, the rubber tube 114 is deformed by the vibration, and the first The air spring 11 absorbs vibration. Thereby, it can suppress that the vibration from the floor surface F propagates to the molding machine 1000.

  The branch pipe 30 is branched in order to distribute and supply the air supplied from the air supply unit 50 to the first to third systems. Within each system, the first supply pipe 21 and the second supply pipe are branched. 22 is a pipe connected to supply air by distributing to each supply pipe. As shown in FIG. 1, the first supply pipe 21 and the second supply pipe 22 are connected to the branch pipe 30 at the connection portion 32. At this time, in the connection part 32, the 1st supply piping 21, the 2nd supply piping 22, and the branch piping 30 are connected so that it may mutually communicate. The air supplied from the air supply unit 50 flows through the branch pipe 30, branches at the connection part 32 between the first supply pipe 21 and the branch pipe 30, and the first air spring 11 and the second air. Each is supplied to the spring 12.

  The first check valve 211 and the first pressure gauge 231 are provided on the first supply pipe 21. The first check valve 211 is a check valve that has a function of flowing a fluid in one direction and not flowing in the opposite direction. In the present embodiment, the first check valve 211 is connected to the first connection valve 32 from the connection portion 32. Although air flows in the direction of one air spring 11, air does not flow in the direction from the first air spring 11 to the connection portion 32. That is, the first check valve 211 blocks the flow of air from the first air spring 11 to the connecting portion 32. Further, a residual pressure relief valve 241 is provided between the first air spring 11 and the first pressure gauge 231 on the first supply pipe 21, and when the residual pressure relief valve 241 is opened. Since the compressed air in the first air spring 11 is discharged, the residual pressure in the first air spring 11 can be released.

  The second check valve 212 and the second pressure gauge 232 are provided on the second supply pipe 22. Similar to the first check valve 211, the second check valve 212 allows air to flow from the connection portion 32 to the second air spring 12, but from the second air spring 12 to the connection portion 32. Do not flow air in the direction. A residual pressure relief valve 242 is provided between the second air spring 12 and the second pressure gauge 232 on the second supply pipe 22.

  The height sensor 60 is provided on the branch pipe 30, detects the height of the intermediate point P1 (shown in FIG. 2) between the first air spring 11 and the second air spring 12, and based on the detection result. The amount of air supplied to the first air spring 11 and the second air spring 12 is adjusted by adjusting the opening of the pressure regulating valve 62 provided inside. For example, when the height of the intermediate point P1 detected by the height sensor 60 is lower than the reference value, the height sensor 60 increases the opening amount of the pressure regulating valve 62 to increase the supply amount of air. Thus, the height of the intermediate point P1 is adjusted so as to keep the reference height.

  The air supply unit 50 mainly includes an original supply pipe 40, an air compressor 52, an original valve 42, and a residual pressure relief valve 44. The air compressor 52 compresses air in the atmosphere and supplies the compressed air to the branch pipe 30 via the original supply pipe 40. The original valve 42 is provided on the original supply pipe 40, and the presence or absence of air supply can be switched by opening and closing the original valve 42. The residual pressure relief valve 44 is provided on the original supply pipe 40. After the original valve 42 is closed and the supply of air is stopped, the residual pressure release valve 44 is opened to discharge the compressed air in the vibration isolation device 100 and to reduce the residual pressure in the vibration isolation device 100. Can be removed. The original supply pipe 40 and the branch pipe 30 in the present embodiment correspond to the original supply pipe in the claims.

A2. Example operation:
The flow of air in the vibration isolator 100 will be described with reference to FIG. When the user activates the molding machine 1000 and starts the vibration isolation device 100 and stops the molding machine 1000, the vibration isolation device 100 is also stopped. When the user starts the vibration isolator 100, when the user operates the air compressor 52 and opens the main valve 42, the compressed air is branched and supplied to the branch piping 30 of each system via the original supply piping 40. . Thereafter, the air is supplied to the first air spring 11 via the first supply pipe 21 and to the second air spring 12 via the second supply pipe 22. The amount of air supplied to each air spring changes according to the internal pressure of each air spring, and the internal pressures of the first air spring 11 and the second air spring 12 are kept the same.

  For example, if there is a scratch on the rubber tube 114 of the first air spring 11 of the first system and air is leaking from the scratch, the internal pressure of the first air spring 11 is reduced. Is compressed, and the position of the first air spring 11 is lowered. If it does so, the position of the intermediate point P1 of the 1st air spring 11 and the 2nd air spring 12 will also fall. When the height sensor 60 detects that the intermediate point P1 has decreased, the height sensor 60 adjusts the opening of the pressure regulating valve 62 to increase the supply amount of compressed air. As a result, air is supplied to the first air spring 11 and the position of the first air spring 11 is maintained. That is, since the compressed air is continuously supplied to the first air spring 11 throughout the operation of the vibration isolator 100 and the height of the first air spring 11 is maintained, the molding machine 1000 does not tilt and is constant. Is maintained.

  Moreover, even if there is no air leakage in all the first air springs 11 and the second air springs 12 of the first to third systems, as described above, the high points of the intermediate points P1 to P3 are caused by vibration. Fluctuates. Even in such a case, the height sensor 60 adjusts the opening degree of the pressure regulating valve 62 based on the detected height, so that the molding machine 1000 does not tilt and always maintains a constant height. The height of each point is monitored.

  On the other hand, when checking air leakage, the inspector stops the air compressor 52, closes the original valve 42, and stops the supply of air to the first to third systems. When attention is paid to the first system, as described above, the internal pressures of the first air spring 11 and the second air spring 12 are the same immediately after the supply of air is stopped. Further, since the first check valve 211 and the second check valve 212 are provided, the air in the first air spring 11 and the second air spring 12 flows out toward the branch pipe 30. There is nothing. That is, there is no entry / exit of air to / from the first air spring 11 and the second air spring 12. Therefore, normally, the internal pressures of the first air spring 11 and the second air spring 12 are kept the same.

  However, for example, if the first air spring 11 is scratched or if there is a gap between the rubber tube 114 and the upper plate 110 or the lower plate 112, air may leak from there. Since the second check valve 212 is provided on the second supply pipe 22, the air in the second air spring 12 flows through the first supply pipe 21 to the first air spring 11. Never move on. If it does so, the internal pressure of the 1st air spring 11 will fall. When the inspector confirms by the first pressure gauge 231 that the internal pressure of the first air spring 11 has decreased, the first air spring 11 may have a defect such as a scratch or a gap. I understand. For the second and third systems as well, the inspector can similarly confirm the malfunction of the air spring. A pressure sensor may be used instead of the first pressure gauge 231 and the second pressure gauge 232.

  That is, the inspector closes the original valve 42 and stops the supply of air, and then checks the change in pressure with the first pressure gauge 231 and the second pressure gauge 232 of each system, thereby reducing the pressure drop. If there is something, it can be easily confirmed that the corresponding air spring is defective.

A3. Effects of the embodiment:
The effect of the present embodiment will be described in comparison with the comparative example. FIG. 5 is an explanatory diagram schematically showing a configuration of a vibration isolation device 100P of a comparative example. The vibration isolator 100P is roughly divided into the first to third systems and the air supply unit 50, like the vibration isolator 100 of the first embodiment. As in the first embodiment, air is supplied from the air supply unit 50 to each system. The vibration isolator 100P is different from the vibration isolator 100 of the first embodiment in that the first check valve 211 and the first pressure gauge 231 are not provided on the first supply pipe 21, Further, the second check valve 212 and the second pressure gauge 232 are not provided on the second supply pipe 22, and the one pressure gauge 34 is provided on the branch pipe 30. It is. Other configurations are the same as those of the vibration isolation device 100 of the first embodiment, and thus the description thereof is omitted.

  In the vibration isolator 100P, as with the vibration isolator 100 of the first embodiment, air is supplied from the air supply unit 50 to the first to third systems via the branch pipe 30, and further, the first supply pipe Air is supplied to the first air spring 11 via 21 and to the second air spring 12 via the second supply pipe 22. In the vibration isolator 100P, since the check valve is not provided in the first supply pipe 21 and the second supply pipe 22, the gap between the first air spring 11 and the second air spring 12 is Air can travel back and forth through the first supply pipe 21 and the second supply pipe 22. Accordingly, when the vibration isolator 100P is in operation, for example, when the first air spring 11 is scratched and air leakage occurs, the second air spring 11 decreases when the internal pressure of the first air spring 11 decreases. 12 moves into the first air spring 11 via the second supply pipe 22 and the first supply pipe 21, and the internal pressures of the first air spring 11 and the second air spring 12 are reduced. Keep the same. Thus, since the internal pressure of the 1st supply piping 21 and the internal pressure of the 2nd supply piping 22 are the same, the internal pressure can be measured with the pressure gauge 34 provided on the branch piping 30. .

  When checking air leakage in the vibration isolator 100P, the inspector closes the original valve 42 and stops the supply of air to the first to third systems, as in the first embodiment. . Here, it is assumed that air leakage occurs in the first air spring 11 of the first system, but no air leakage occurs in the other air springs 11 and 12. When attention is paid to the first system, since air leaks in the first air spring 11, as described above, the air moves from the second air spring 12 to the first air spring 11, The internal pressure of both the first air spring 11 and the second air spring 12 decreases. Therefore, the detected pressure value by the pressure gauge 34 is lowered. Similarly, for each of the second system and the third system, the inspector uses the pressure gauge 34 to see changes in pressure in each system. Then, the pressure is reduced in the pressure gauge 34 of the first system, but the pressure is not decreased in the second and third systems. Therefore, the inspector knows that air leakage has occurred in the first system. However, it is not known which of the first air spring 11 and the second air spring 12 in the first system has an air leak.

  On the other hand, according to the vibration isolator 100 of the present embodiment, the first check valve 211 and the second check valve 212 are provided in the first supply pipe 21 and the second supply pipe 22, respectively. Therefore, the flow of air between the first air spring 11 and the second air spring 12 is blocked. Therefore, when the supply of air to the first air spring 11 and the second air spring 12 is stopped, the internal pressures of the first air spring 11 and the second air spring 12 are independent depending on the respective states. Change. Therefore, when checking air leakage, the inspector changes the first pressure gauge 231 and the second pressure gauge 232 provided in each of the first supply pipe 21 and the second supply pipe 22. By looking, it is possible to easily identify an air spring in which an air leak has occurred.

B. Second embodiment:
FIG. 4 is an explanatory diagram schematically showing the configuration of the vibration isolation device 100A of the second embodiment. The vibration isolator 100A is roughly divided into the first to third systems and the air supply unit 50, like the vibration isolator 100 of the first embodiment. As in the first embodiment, air is supplied from the air supply unit 50 to each system. The vibration isolator 100A is different from the vibration isolator 100 of the first embodiment in that the first check valve 211 and the second reverse valve are respectively provided on the first supply pipe 21 and the second supply pipe 22. The stop valve 212 is not provided, and a valve 250 is provided on the first supply pipe 21 instead. Other configurations are the same as those of the vibration isolation device 100 of the first embodiment, and thus the description thereof is omitted. The valve 250 and the pressure regulating valve 62 in the present embodiment correspond to a blocking part in the claims.

  In the vibration isolator 100A, similarly to the vibration isolator 100 of the first embodiment, air is supplied from the air supply unit 50 to the first to third systems via the branch pipe 30, and further, the first supply pipe Air is supplied to the first air spring 11 via 21 and to the second air spring 12 via the second supply pipe 22. Unlike the first embodiment, the vibration isolator 100A is not provided with the first check valve 211 and the second check valve 212 in the first supply pipe 21 and the second supply pipe 22. Therefore, air can travel between the first air spring 11 and the second air spring 12 via the first supply pipe 21 and the second supply pipe 22. Therefore, similarly to the conventional vibration isolator 100P, the internal pressures of the first air spring 11 and the second air spring 12 are kept the same when the vibration isolator 100A is in operation.

  On the other hand, when checking air leakage in the vibration isolator 100A, the inspector closes the original valve 42 to stop the supply of air to the first to third systems. Further, the pressure regulating valve 62 and the valve 250 of each system are closed. By closing the valve 250, the air flow between the first supply pipe 21 and the second supply pipe 22 can be blocked. Further, by closing the pressure regulating valve 62, it is possible to block the air flow between the systems. For example, if only the valve 250 is closed and the pressure regulating valve 62 is opened, air may flow between the second supply pipes 22 of each system. By closing the valve 62, the air flow in the first supply pipe 21 and the second supply pipe 22 can be shut off.

  Therefore, if no air leaks from the first air springs 11 and the second air springs 12, the internal pressures of the first air springs 11 and the second air springs 12 should not change. is there. However, when air leakage occurs, the internal pressure of the air spring decreases. Therefore, the inspector checks the decrease in the internal pressure of each air spring by the first pressure gauge 231 and the second pressure gauge 232 in the same manner as in the first embodiment. The spring can be easily identified.

C. Variations:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

  (1) In the above embodiment, the vibration isolator is illustrated, but other shock absorbers may be used. For example, in a press machine, the shock absorber provided in order to absorb the impact of the metal mold | die which presses a to-be-processed body may be sufficient. Even in such an apparatus, the same effect can be obtained by applying the present invention.

  (2) In the above-described embodiment, an air spring is used as the buffer portion. However, the buffer portion is not limited to the air spring, and may be any as long as it has air inside and functions as the buffer portion. For example, an air cylinder may be used. Furthermore, the fluid filled in the interior is not limited to air, and various fluids such as other gases such as nitrogen, liquids such as water, and gels may be used. Even if it does in this way, the same effect can be acquired.

  (3) In the above embodiment, the case where the metal separator molding machine, which is a component of the fuel cell stack, includes the vibration isolator 100 is exemplified. However, the vibration isolator 100 is not limited to the engine, pump, compressor, precision It can be used for various devices such as measuring devices and semiconductor devices.

  (4) In the first embodiment, the first check valve 211 and the second check valve 212 are provided on the first supply pipe 21 and the second supply pipe 22, respectively. However, instead of the check valve, a valve for opening and closing the first supply pipe 21 and the second supply pipe 22 may be used. Even if it does in this way, when checking air leakage, by closing the valve provided on the 1st supply piping 21 and the 2nd supply piping 22, the same effect as an above-mentioned example is obtained. Obtainable.

It is explanatory drawing which shows roughly the structure of the vibration isolator 100 as 1st Example of this invention. It is explanatory drawing which shows planar arrangement | positioning with respect to the molding machine 1000 of the above-mentioned 1st air spring 11 2nd air spring 12. FIG. FIG. 4 is an explanatory diagram for explaining a configuration of a first air spring 11. It is explanatory drawing which shows roughly the structure of the vibration isolator 100A of a 2nd Example. It is explanatory drawing which shows roughly the structure of the vibration isolator 100P of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... 1st air spring 12 ... 2nd air spring 21 ... 1st supply piping 22 ... 2nd supply piping 30 ... Branch piping 32 ... Connection part 34 ... Pressure gauge 40 ... Original supply piping 42 ... Original valve 44 ... Residual pressure relief valve 50 ... Air supply part 52 ... Air compressor 60 ... Height sensor 62 ... Pressure adjustment valve 100, 100A, 100P ... Vibration isolation device 110 ... Upper plate 110p ... Cylinder 110s ... Disc plate 112 ... Lower plate 112p ... Cylindrical portion 112s ... disc 114 ... rubber tube 211 ... first check valve 212 ... second check valve 231 ... first pressure gauge 232 ... second pressure gauge 241 ... residual pressure relief valve 242 ... residual pressure Drain valve 250 ... Valve 1000 ... Molding machine 50 ... Air supply part F ... Floor surface P1 ... Intermediate point

Claims (5)

A shock absorber provided with a plurality of shock absorbers having fluid therein,
A pipe for supplying the fluid from the fluid supply source to each of the buffer units; an original supply pipe for sending the fluid from the fluid supply source; A plurality of branch pipes connected to each of the supply pipes,
A pressure measuring unit for measuring an internal pressure of each of the plurality of buffer units;
A blocking section capable of blocking the flow of the fluid between the plurality of buffer sections communicated by the supply pipe;
A shock absorber characterized by comprising. The shock absorber according to claim 1,
The blocking part is
One shock absorber is provided for each of the branch pipes. The shock absorber according to claim 2,
The blocking part is
A shock absorber characterized by being a check valve. A molding machine,
A vibration absorbing shock absorber that absorbs vibration of the molding machine;
A molding system comprising:
The vibration absorbing shock absorber is:
A molding system comprising the shock absorber according to any one of claims 1 to 3. The molding system according to claim 4,
The molding machine
A molding system characterized by molding a metal separator used in a fuel cell.

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