JP4874059B2 - Pressure operating system - Google Patents

Description

  The present invention relates to a pressure operation system, and more particularly to a device that realizes smooth operation control by a pneumatic circuit.

2. Description of the Related Art Conventionally, a pneumatic circuit that allows compressed air (pressure air) to flow in is constructed, and operations such as opening and closing a valve are controlled (see, for example, Patent Documents 1 and 2). Then, an operating end portion for opening and closing the valve and an adjusting portion for introducing / blocking pressurized air for operating the operating end portion are disposed at both ends.
JP-A-9-303314 Japanese Patent Laid-Open No. 11-336936

  However, in such a conventional pneumatic circuit, when the piping path between the operation end and the adjustment unit is short, the operation of the operation end by the pressure air from the adjustment unit functions with high sensitivity (sensitive). For example, when the adjusting unit controls the operation end based on the flow rate in the pipe to be adjusted, as a result, the operation control is frequently executed. In some cases, pulsation may occur in the flow rate.

  In order to avoid the occurrence of such pulsation, as shown in FIG. 5, a predetermined amount of pressurized air is stored in the middle of the pipe 103 between the adjusting unit 101 and the adjusting valve (operation end) 102. It is common to provide a volume chamber 200 that can be used.

  However, since the volume of the volume chamber 200 cannot be changed finely, it is necessary to repeatedly prepare various types and actually check the presence or absence of pulsation after being interposed in the pipe 103. It takes time. Moreover, when installing such a volume chamber 200, it is necessary to stop the whole system | strain in order to interpose in the middle of the piping 103, and the loss for the stop will increase.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pressure operation system capable of easily interposing an optimum chamber in the middle of piping of a pneumatic circuit and performing operation control with pressurized air without causing pulsation. And

  According to a first aspect of the pressure operation system for solving the above-mentioned problems, the pressure for operating the operation means connected to the pipe by introducing / blocking the fluid pressure in the pipe constituting the pneumatic circuit in accordance with a control command. The operation system is characterized in that a chamber having a larger capacity per unit length than that of the front and rear pipes is interposed in the middle of the pipe, and the chamber is designed to have a variable capacity. .

  In the present invention, a variable capacity chamber is interposed in the middle of the piping of the pneumatic circuit. Therefore, the capacity of the chamber can be adjusted according to the pipe length (capacity) up to the operating means operated with pressurized air, and the system can be operated effectively with pressurized air without causing pulsation. can do.

  According to a second aspect of the pressure operation system for solving the above problems, in addition to the specific matter of the first aspect, the chamber connects a plurality of capacity pipe members having a cross-sectional area larger than that of the front and rear pipes in series. The capacity is changed by changing the number of the capacity tube members.

  In the present invention, the chamber capacity can be adjusted by changing the number of capacity pipe members connected in series in the middle of the piping of the pneumatic circuit. Therefore, the series number of the capacity pipe members can be easily increased / decreased according to the pipe length (capacity), and a system in which the operating means can be effectively operated with the pressure air without causing pulsation is provided. it can.

  According to a third aspect of the pressure operation system for solving the above-mentioned problems, in addition to the specific matter of the first aspect, the chamber connects a plurality of capacity pipe members having a cross-sectional area larger than the front and rear pipes in parallel. The capacity is changed by changing the number of the capacity tube members.

  In the present invention, the chamber capacity can be adjusted by changing the number of capacity pipe members connected in parallel in the middle of the piping of the pneumatic circuit. Accordingly, the parallel number of the capacity pipe members can be easily increased or decreased according to the pipe length (capacity), and a system in which the operating means can be effectively operated with the pressure air without causing pulsation is provided. it can.

  According to a fourth aspect of the pressure operating system for solving the above-mentioned problems, in addition to the specific matters of the third aspect, both ends of the capacity pipe member are connected to a joint member that defines a common space. The member is provided with a valve that allows / blocks outflow / inflow of fluid at a connection portion with an end portion of the capacity pipe member.

  In the present invention, the number of capacity pipe members that function as a chamber can be changed by opening and closing a valve of a joint member that connects the capacity pipe members in parallel during the piping of the pneumatic circuit. Therefore, it is possible to increase or decrease the parallel number of the capacity pipe members by simply opening and closing the valve of the joint member without stopping the supply of the pressure air, and the chamber capacity is adjusted according to the operation status of the operation means by the pressure air. be able to.

  According to a fifth aspect of the pressure operation system for solving the above-mentioned problems, in addition to the specific matter of the first aspect, the chamber is manufactured in a bellows structure in which the capacity is changed by fixing the length. It is characterized by being. Here, the length of the bellows structure means a dimension in a direction that changes in order to vary the capacity, and is not limited to a dimension in the longitudinal direction.

  In this invention, the chamber capacity in the middle of piping of the pneumatic circuit can be adjusted by changing the length of the bellows structure. Therefore, the chamber capacity can be finely and easily increased or decreased simply by adjusting the length of the bellows structure in accordance with the pipe length (capacity) or the operation status of the operating means by the pressure air without stopping the supply of pressurized air. It is possible to provide a system in which the operating means can be effectively operated with pressurized air without generating pulsation.

  As described above, according to the present invention, by adjusting the chamber capacity in the middle of the piping of the pneumatic circuit, it is possible to construct a system that can comfortably operate the operating means with the pressure air without depending on the piping length (capacity). It is possible to operate the operating means with pressure air with good reaction without generating pulsation.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. 1 and 2 are views showing a first embodiment of a pressure operation system according to the present invention.

  In FIG. 1, a pressure operation system includes an adjustment unit 101 that outputs and stops based on a control command that receives supplied pressure air (fluid), and an adjustment valve (operation end portion) of an operation means that can be opened and closed by the pressure air. ) 102 and the pipe 103 that connects and connects the pressure air from the adjusting unit 101 to the adjusting valve 102 so as to be able to be introduced. Thus, a pneumatic circuit is constructed.

  For example, when the control unit 101 receives a control command for adjusting the flow rate in the pipe 201 to be adjusted, the control unit 101 introduces / blocks compressed air (pressure air) supplied to the control valve 102 via the pipe 103. For example, by adjusting the air pressure (fluid pressure) to be applied, the adjustment valve 102 is operated and controlled to reduce the flow rate in the pipe 201. In FIG. 1, 111 is an open / close valve for supplying / blocking compressed air to / from the adjusting unit 101, 112 is a filter for removing dust and the like from compressed air supplied to the adjusting unit 101, and 113 is the adjusting unit 101. It is a pressure reducing valve that adjusts the air pressure of compressed air to be supplied.

  In this pressure operation system, a volume chamber 10 capable of storing pressurized air is interposed in the middle of the pipe 103 between the adjustment unit 101 and the adjustment valve 102. As shown in FIG. It is set so that the inflow / outflow amount of the pressurized air per unit length is larger than that of the pipe 103 by forming the inflow / outflow space of the pressurized air having a larger diameter (larger cross-sectional area) than the pipe 103. The capacity | capacitance which can store pressurized air is ensured by connecting and connecting the plurality of the capacity | capacitance pipe members 11 connected in series by the connecting pipe 12. FIG.

  That is, the chamber 10 is connected and connected between the both ends of the capacity tube member 11 through the connection tube 12 so that the pressurized air can flow therethrough, and is connected to the tip of the most advanced capacity tube member 11 on the upstream side. The pipe 103 is connected and connected so as to allow the flow of pressurized air, and the downstream pipe 103 is also connected and connected to the rear end portion of the capacity pipe member 11 at the rearmost end thereof so that the pressure air can flow. By increasing / decreasing the number of the members 11 in series, it is possible to adjust (change) the volume of the pressurized air that can be accumulated in the middle of the pipe 103 between the adjusting unit 101 and the adjusting valve 102.

  Accordingly, since the capacity of the pipe 103 is small for applying the pressure air from the adjusting unit 101 to the adjusting valve 102, the adjusting valve 102 is operated with high sensitivity every time the adjusting unit 101 receives a control command. When pulsation is generated in the flow rate flowing in 201, the chamber 10 is installed (interposed) so that pressurized air can flow in and out of the pipe 103 between the adjusting portion 101 and the adjusting valve 102, and By increasing / decreasing the series number of the capacity tube members 11 of the chamber 10, the capacity between the adjusting portion 101 and the adjusting valve 102 can be optimally adjusted.

  Accordingly, if the adjusting valve 102 is operated every time the adjusting unit 101 receives a control command, the reaction of the capacity pipe member 11 is caused when the flow rate in the pipe 201 is pulsated due to excessively sensitive reaction (operation). If the adjustment of the flow rate flowing in the pipe 201 is slow even if the adjustment valve 102 is operated when the adjustment unit 101 receives a control command while the number of series is increased to increase the capacity of the chamber 10, the capacity pipe member By reducing the capacity of the chamber 10 by reducing the number of 11 in series, the adjustment unit 101 can be a system that can effectively operate the adjustment valve 102 based on a control command.

  Thus, in the present embodiment, the capacity of the pipe 103 constituting the pneumatic circuit between the adjusting unit 101 and the adjusting valve 102 is not adjusted by changing the length of the pipe 103, but in the middle of the pipe 103. The sensitivity with which the adjusting unit 101 operates the adjusting valve 102 based on the control command can be adjusted simply by increasing or decreasing the series number of the capacity pipe members 11 of the chamber 10 to be interposed. Therefore, it is possible to provide a system in which the adjusting unit 101 can effectively operate the adjusting valve 102 without generating pulsation.

  Next, FIG. 3 is a figure which shows 2nd Embodiment of the pressure operation system based on this invention. Here, since the present embodiment is configured in substantially the same manner as the above-described embodiment, the same reference numerals are given to the same configuration, and the characteristic portions will be described (the same applies to other embodiments described below). .

  In FIG. 3, the volume chamber 20 is provided with a plurality of capacity pipe members 11 through two joint blocks (joint members) 21 and 22 in the middle of the pipe 103 between the control unit 101 and the control valve 102. ing.

  The joint block 21 is connected and connected so that the upstream pipe 103 communicates with the internal space, and a plurality of on-off valves 25 are arranged to open and close the communication path to the internal space. One end of the capacity tube member 11 is connected to each of the valves 25 via a connecting tube 27 so that pressurized air can flow.

  Similarly, the joint block 22 is connected and connected so that the downstream pipe 103 communicates with the internal space, and a plurality of on-off valves 26 are arranged to open and close the communication path to the internal space. The other end portion of the capacity pipe member 11 is connected to each of the open / close valves 26 via a connecting pipe 28 so that the pressurized air can flow therethrough.

  That is, in the chamber 20, a plurality of capacity pipe members 11 are connected in parallel so that pressurized air can flow through the joint blocks 21, 22 and the connecting pipes 27, 28, and the number of parallel capacity pipe members 11 is increased or decreased. Thereby, the capacity | capacitance of the pressure air which can be collected in the middle of the piping 103 between the adjustment part 101 and the adjustment valve 102 can be adjusted (changed). Further, the joint blocks 21 and 22 open and close the opening and closing valves 25 and 26 without stopping the flow of the pressure air in the pipe 103, in other words, without stopping the operation of the adjusting valve 102 by the adjusting unit 101. Thus, the capacity pipe member 11 connected to the pipe 103 can be switched, and the capacity of the pressurized air that can be stored in the chamber 20 in the middle of the pipe 103 can be adjusted (changed). In addition, spare open / close valves 25a and 26a are prepared in the joint blocks 21 and 22 so that the capacity can be increased by connecting separate capacity pipe members 11 in parallel.

  As a result, in this chamber 20, as in the chamber 10 of the above-described embodiment, if the adjustment valve 102 is operated every time the adjustment unit 101 receives a control command, pulsation is generated in the flow rate flowing in the pipe 201. Further, without stopping the adjustment of the flow rate of the fluid in the pipe 201, the adjusting section 101 can control the control command by increasing or decreasing the parallel number of the capacity pipe members 11 in the middle of the pipe 103 between the adjusting section 101 and the adjusting valve 102. Therefore, the control valve 102 can be effectively operated.

  As described above, in the present embodiment, the operational effects of the above-described embodiment can be obtained, and in addition, the adjustment can be performed by interposing the chamber 20 in the middle of the pipe 103 between the adjustment unit 101 and the adjustment valve 102. Without stopping the operation of the adjustment valve 102 by the unit 101, the number of paralleled capacity pipe members 11 that allow the pressure air to communicate with the pipe 103 so as to flow in and out can be increased or decreased. Therefore, it is possible to adjust the operation sensitivity of the adjusting valve 102 by the adjusting unit 101 without stopping the flow rate adjustment of the fluid flowing through the pipe 201 to be adjusted, and the adjusting unit 101 can adjust the adjusting valve 102 without generating pulsation. The system can be operated effectively.

Next, FIG. 4 is a figure which shows 3rd Embodiment of the pressure operation system based on this invention.
In FIG. 4, the volume chamber 30 is interposed in the middle of the pipe 103 between the adjusting portion 101 and the adjusting valve 102, and the chamber 30 is designed in a bellows structure.

  The chamber 30 faces a bellows portion 31 formed so that the internal space can be increased / decreased by expanding and contracting, and a facing plate 32 connected so as to close both ends of the bellows portion 31 and facing each other. The slide bar 33 is slidably supported in the direction of approaching / separating the facing plate 32 while maintaining the state, so that a bellows structure having a variable capacity is produced, and the outer surface of each facing plate 32 is provided. An open / close valve 34 for opening and closing a path communicating with the inside of the bellows portion 31 is provided, and the upstream and downstream pipes 103 are connected and connected so as to allow pressure air to flow therethrough.

  The chamber 30 is formed as a male screw by forming a threaded groove on the outer peripheral surface of the slide bar 33, and a nut (female screw) positioned on the front and back of the facing plate 32 on the male screw of the slide bar 33. When 35 is screwed, the length of the bellows portion 31, in other words, the capacity of the chamber 30 can be adjusted and fixed. Here, a scale 36 for adjusting the separation interval of the facing plate 32 is installed in the chamber 30 at an adjacent position.

  That is, the chamber 30 can finely adjust the capacity in the bellows portion 31 by adjusting the facing distance of the facing plate 32, and the pressure that can be accumulated in the middle of the pipe 103 between the adjusting portion 101 and the adjusting valve 102. The air volume can be finely adjusted (finely increased or decreased). Further, the capacity of the bellows portion 31 changes the facing distance of the facing plate 32 without stopping the flow of pressurized air in the pipe 103, in other words, without stopping the operation of the adjusting valve 102 by the adjusting portion 101. It is possible to make fine adjustments.

  Accordingly, in this chamber 30, as in the chamber 20 of the above-described embodiment, if the adjustment valve 102 is operated every time the adjustment unit 101 receives a control command, pulsation is generated in the flow rate flowing in the pipe 201. In addition, without stopping the adjustment of the flow rate of the fluid in the pipe 201, the capacity of the bellows part 31 in the middle of the pipe 103 between the adjusting part 101 and the adjusting valve 102 is finely adjusted by changing the facing distance of the facing plate 32. Thus, the adjustment unit 101 can be a system that can effectively operate the adjustment valve 102 based on the control command.

  As described above, in this embodiment, the operational effects of the above-described embodiment can be obtained, and in addition, the adjustment can be performed by interposing the chamber 30 in the middle of the pipe 103 between the adjustment unit 101 and the adjustment valve 102. Without stopping the operation of the adjustment valve 102 by the portion 101, the capacity in the bellows portion 31 that allows the pressurized air to communicate with the pipe 103 so as to flow in and out can be finely adjusted. Therefore, the operation sensitivity of the adjustment valve 102 by the adjustment unit 101 can be adjusted with higher accuracy without stopping the flow rate adjustment of the fluid flowing through the pipe 201 to be adjusted, and the adjustment unit 101 can be adjusted without causing pulsation. It can be set as the system which can operate the regulation valve 102 more effectively.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment of the pressure operation system which concerns on this invention, and is a conceptual connection figure which shows the schematic whole structure. It is a perspective view which shows the chamber of the principal part. It is a figure which shows 2nd Embodiment of the pressure operation system which concerns on this invention, and is a perspective view which shows the chamber of the principal part. It is a figure which shows 3rd Embodiment of the pressure operation system which concerns on this invention, and is a conceptual perspective view which shows the chamber of the principal part. It is a figure which shows the prior art of the pressure operation system, and is a conceptual connection figure which shows the schematic whole structure.

Explanation of symbols

  10, 20, 30 ... Volume chamber 11 ... Capacity pipe member 12, 27, 28 ... Connection pipe 21, 22 ... Joint block 25, 25a, 26, 26a ... Open / close valve 31 ... Bellows part 32 ... Face-to-face plate 33 …… Slide bar 34 …… Open / close valve 35 …… Nut 36 …… Scale 101 …… Adjustment part 102 …… Adjustment valve 103 …… Piping

Claims (1)

A pressure operation system for operating an operation means connected to a pipe by introducing / blocking a fluid pressure in the pipe constituting the pneumatic circuit according to a control command,
A chamber with a larger capacity per unit length than the front and rear pipes is installed in the middle of the pipe.
The chambers are connected in parallel by connecting both ends of a plurality of capacity pipe members having a larger cross-sectional area than the front and rear pipes to a joint member that defines a common space, and the joint members are connected to the capacity pipe. A pressure operating system characterized in that it is designed to have a variable capacity by providing a valve that allows / blocks outflow and inflow of fluid at a connecting portion with an end of a member .

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