JP2005282825A - Lubrication system and lubricant feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To feed a lubricant to respective conduit lines using a single pump without impairing respective functions, and to improve freedom degree of lubricant feeding in a plural system conduit line equipped with two systems or more of at least one of a depressurization conduit line and a non-depressurization conduit line. <P>SOLUTION: This system is provided with the single pump 10 equipped with the two systems of the depressurization conduit lines Pt1 and Pt2 to which the lubricant is fed and depressurization is required and the non-depressurization conduit line Ps to which the lubricant is fed and depressurization is not required wherein the plural systems of the conduit lines Pt1, Pt2 and Ps are arranged in parallel so as to feed the lubricant to the conduit lines Pt1, Pt2 and Ps of the plural systems; and a switch valve 30 connected to the pump 10 and switched to feed the lubricant from the pump 10 to any one of the conduit lines Pt1, Pt2 and Ps of the plural systems. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  INDUSTRIAL APPLICABILITY The present invention is effective for a lubrication system including a depressurization pipeline that supplies lubricant such as grease and oil and requires depressurization and a non-depressurization pipeline that supplies lubricant and does not require depressurization, and the lubrication system. In particular, the present invention relates to a lubrication system having two or more systems of at least one of a decompression conduit and a non-decompression conduit, and a lubricant supply device effective for the lubrication system.

Conventionally, as this type of lubrication system and lubricating oil supply device, for example, one described in Patent Document 1 (Japanese Patent Laid-Open No. 2002-323196) is known.
This lubrication system is provided in, for example, a resin or metal injection molding machine.

  FIG. 22 shows the lubrication system and the lubricant supply device S0. In this lubrication system, a part that requires a relatively small amount of oil supply is divided into a part that requires a relatively large amount of oil supply. A single piston (not shown) that is reciprocated by the cylinder and discharges lubricating oil, and one discharge port corresponding to the piston, and a discharge amount per shot of about 0.03 ml to 1.5 ml is known. Piping to a plurality of corresponding locations using a fixed valve Vt, while a plurality of parts that require a relatively large amount of oil supply are reciprocated in order by pressurizing the lubricating oil to discharge the lubricating oil. Piping is performed at a plurality of corresponding locations using a well-known traveling type quantitative valve Vs provided with a plurality of pistons (not shown) and a plurality of pairs of discharge ports corresponding to the pistons. In the progress type metering valve Vs, the discharge amount per one stroke of the piston is set to about 0.1 ml, for example, the piston is operated for a predetermined stroke and stopped for a predetermined time, and a relatively large amount of lubricating oil is intermittently supplied in a fixed amount. doing. Since the single metering valve Vt is operated by pressurization and depressurization of the lubricating oil and discharges the lubricating oil, it is necessary to depressurize it. On the other hand, the progress type metering valve Vs maintains the pressure in the pipe when the pump is stopped and discharges the lubricating oil from the proceeding type metering valve Vs without excess or deficiency so that the discharge amount is accurate. It is provided in the pressure line Ps. As described above, the lubrication system according to the embodiment has two systems of the decompression conduit Pt and the non-decompression conduit Ps. Further, the depressurization conduit Pt and the non-decompression conduit Ps are provided in parallel.

  In this lubrication system, a lubricating oil supply device S0 capable of supplying lubricating oil to two systems of a decompression conduit Pt and a non-decompression conduit Ps is used. This lubricating oil supply device S0 is integrated with one pump 1 that feeds the lubricating oil stored in the decompression pipe Pt and the non-depressurizing pipe Ps, a lubricating oil reservoir 2 that stores the lubricating oil, and the pump 1. Is connected to and switched so that the lubricating oil from the pump 1 can be fed to either the decompression conduit Pt or the non-decompression conduit Ps, and at least when not connected to the decompression conduit Pt, the decompression conduit Pt And a switching valve 3 that makes it possible to release pressure.

When the lubricating oil supply device S0 lubricates the depressurizing pipe Pt, the switching valve 3 connects the pump 1 and the depressurizing pipe Pt and discharges the lubricating oil from the pump 1 to release the depressurizing pipe. Pt is pressurized and lubricating oil is discharged to each single metering valve Vt. Thereafter, the pump 1 is deactivated and the switching valve 3 is switched, the depressurization line Pt is disconnected from the pump 1, the pump 1 and the nondepressurization line Ps are connected, and the depressurization line Pt is removed. Press.
When the lubricating oil supply device S0 lubricates the non-depressurizing pipe Ps, the lubricating oil is discharged from the pump 1 while the pump 1 and the non-depressurizing pipe Ps are connected by the switching valve 3. The non-depressurization pipe line Ps is pressurized, and the lubricating oil is discharged from the discharge port of the progressive flow valve Vs.
In this way, the depressurization pipe Pt or the non-depressurization pipe Ps is connected to the pump 1 by the switching valve 3 and the pump 1 is operated and refueled at a predetermined time determined for each pipe. In addition, different amounts of lubricating oil are intermittently supplied from the single metering valve Vt and the progressive metering valve Vs.

JP 2002-323196 A

  By the way, in the lubricating oil supply device S0 used in such a lubricating system, the amount of oil supplied at one time is reduced and the oil is supplied in several times to satisfy a predetermined amount of oil supplied per unit time. If there is a part to be refueled and if an attempt is made to refuel the part to be refueled from, for example, the single metering valve Vt, another unit provided in the decompression line Pt in synchronism with the refueling of the single metering valve Vt. Since the single metering valve Vt also operates, there is a problem that the other single metering valve Vt operates more than necessary to supply oil, causing loss in the supplied lubricating oil.

Specifically, a portion where refueling is required for 15 minutes with a single fixed valve Vt (Vta) of 1 shot 0.25 ml, and an intermittent time of 60 minutes with a single fixed valve Vt (Vtb) of 1.0 shot for 1 shot. When oil is supplied from a single metering valve Vt (Vta) and a single metering valve Vt (Vtb) provided in the depressurization line Pt of the above-mentioned lubrication system, lubrication oil from the pump 1 is supplied to the site where oiling is necessary. If the intermittent pressure is supplied to the depressurization line Pt in 15 minutes, 4.0 ml of oil is supplied from the single metering valve Vt (Vtb) to the portion that needs to be supplied for 60 minutes of intermittent time. Loss 0ml. On the other hand, when the lubricating oil from the pump 1 is supplied to the depressurization line Pt with an intermittent time of 60 minutes, 0.25 ml per 60 minutes is supplied from the single metering valve Vt (Vta) to the site where oil supply for the intermittent time of 15 minutes is required. It can only be refueled, and 0.75 ml is not enough per 60 minutes.
That is, it is not possible to supply the lubricating oil corresponding to the part where the lubricating oil having different intermittent times is to be supplied, and the degree of freedom in supplying the lubricating oil is inferior.
In order to solve this problem, it is conceivable to newly provide another decompression pipe and a lubricating oil supply device, but the cost increases accordingly.

  The present invention has been made in view of the above-described problems, and impairs the function of each of a plurality of pipelines including two or more pipelines of at least one of a decompression pipeline and a non-decompression pipeline. An object of the present invention is to provide a lubrication system capable of supplying lubricating oil to each pipe line with one pump without increasing the degree of freedom in supplying the lubricating oil, and a lubricating oil supply device effective for this system. .

In order to achieve such an object, the lubrication system of the present invention includes a depressurization pipe that feeds the lubricating oil and requires depressurization, and a non-depressurization duct that feeds the lubricating oil and does not require depressurization, In a lubrication system having two or more lines of at least one of a depressurization line and a non-decompression line, the plural lines are provided in parallel, and lubricating oil is supplied to the plural lines. One pump and a switching valve that is connected to the pump and switched to enable the lubricating oil from the pump to be fed to any one of the plurality of pipelines.
As a result, by switching the switching valve, the function of each pipeline can be achieved with one pump in each pipeline of the lubrication system having at least one of the decompression pipeline and the non-decompression pipeline. Lubricating oil can be supplied without loss, and the system can be simplified and the cost can be reduced. Further, for example, a part that secures the amount of oil supplied once per unit time, and a part that secures a predetermined amount of oil per unit time by reducing the amount of oil supplied once and dividing it into several times. Even if there are multiple systems of pipes with different intermittent times, the intermittent time can be set for each of the pipes. Loss of lubricating oil to be supplied can be reduced compared with the system.

  More specifically, there are two systems of depressurization pipes composed of a first depressurization pipe and a second depressurization pipe that are supplied with lubricating oil and need to be depressurized, and one system that is supplied with lubricating oil and does not require depressurization. In a lubrication system having three systems of pipelines including a non-decompression conduit, the first decompression pipeline, the second decompression pipeline, and the non-decompression pipeline are provided in parallel, and the first decompression pipeline and the second decompression pipeline are provided. One pump for supplying lubricating oil to the depressurization line and the non-decompression line, and three systems comprising the first depressurization line, the second depressurization line, and the non-decompression line connected to the pump and switched. A switching valve that enables the lubricating oil from the pump to be fed to any one of the pipelines.

More specifically, a first pressure relief pipe that is supplied with lubricating oil and is operated by pressurizing and depressurizing the lubricating oil to discharge the lubricating oil, and requires depressurization for the operation of the valve. There are two systems of depressurization pipes composed of a passage and a second depressurization pipe, and a valve that feeds the lubricating oil and discharges the lubricating oil by pressurizing the lubricating oil and removes it for the operation of the valve. In a lubrication system having three systems of pipes including one system of non-decompression pipes that do not require pressure, the first depressurization pipe, the second depressurization pipe, and the non-depressurization pipe are provided in parallel. One pump for feeding the lubricating oil stored in the lubricating oil reservoir to the first pressure-reducing conduit, the second pressure-reducing conduit and the non-pressure-reducing conduit; Is the pump connected to any one of the three lines consisting of the second decompression line and the non-decompression line? And a switching valve that enables the first and second depressurization lines to be depressurized when not connected to the first and second depressurization lines. I have.
Thereby, for example, lubrication is performed as follows. First, when lubrication is performed in the first depressurization conduit, the pump and the depressurization conduit are connected and the pump is operated by switching the switching valve. When lubrication is performed in the first depressurization pipeline, the pump and the first depressurization pipeline are connected by switching the switching valve, the pump is operated, and the pump is stopped after lubrication. Next, when lubrication is performed in the second depressurization conduit, the pump and the second depressurization conduit are connected by switching the switching valve, the pump is operated, and the pump is stopped after lubrication. Next, when lubrication is performed in the non-decompression line, the pump and the non-decompression line are connected by switching the switching valve, the pump is operated, and the pump is stopped after lubrication.

In this way, the first, second, and non-decompression lines are lubricated. In this case, it is possible to connect to any one of the first depressurization line, the second depressurization line, and the non-decompression line by only switching the switching valve with one pump, and to the first depressurization line and the second depressurization line. Since the first decompression pipe and the second decompression duct can be depressurized when not connected, the functions of the three systems of the first decompression duct, the second decompression duct, and the non-decompression duct are impaired. As a result, lubricating oil can be supplied to each pipeline with a single pump, and the system can be simplified to reduce costs.
In addition, since the first depressurization line and the second depressurization line are divided, the degree of freedom in supplying the lubricating oil is increased, and the intermittent time of the first depressurization line and the second depressurization line is made different. Lubricating oil can also be supplied, for example, a part that secures the amount of oil supplied once per unit time, and a small amount of oil supplied per time, divided into several times to supply a predetermined amount per unit time Even if there is a mixture of parts that ensure the amount of oil supply, it becomes possible to supply the lubricating oil correspondingly, and the loss of the lubricating oil supplied can be reduced as compared with the conventional lubricating system.

If necessary, the switching valve is connected to a primary side discharge port connected to the discharge port of the pump, a primary side open port opened to the lubricating oil reservoir side, and a second side connected to the first depressurization line. A secondary side first decompression line port, a secondary side second decompression line port connected to the second decompression line, and a secondary side non-decompression line port connected to the non-decompression line, The primary side discharge port and the secondary side first decompression line port are connected, and the primary side open port, secondary side second decompression line port, and secondary non-depressure line port are connected to the primary side discharge. A first depressurization line supply position that is blocked from the port and the secondary side first depressurization line port, the primary side discharge port and the secondary side second depressurization line port are connected and the primary side open port, Secondary side first decompression pipeline port and secondary side non-desorption A second decompression line supply position for blocking the duct port from the primary side discharge port and the secondary side second decompression line port; and connecting the primary side discharge port and the secondary side non-decompression line port A spool movable to three positions of a non-decompression line supply position for connecting the secondary side first depressurization line port and the secondary side second depressurization line port to the primary side open port, and the spool The solenoid valve is provided with a magnetic field generating mechanism that is moved to any one of the first decompression pipe supply position, the second decompression pipe supply position, and the non-decompression pipe supply position.
Since the switching valve is a solenoid valve, it can be easily incorporated into the system.

Further, if necessary, the pump is stopped, and the spool is positioned at the first depressurization line supply position by the magnetic field generation mechanism, and the pump is operated to supply lubricating oil to the first depressurization line. A first depressurizing line supply mode for supplying, and a second oil supply mechanism for supplying lubricating oil to the second depressurizing line by positioning the spool at the second depressurizing line supplying position by the magnetic field generating mechanism and operating the pump. 4 of a decompression line supply mode and a non-decompression line supply mode in which the spool is positioned at a non-decompression line position by the magnetic field generation mechanism and the pump is operated to supply lubricating oil to the non-decompression line. It has a controller that can be set to one of three modes.
Various lubrication patterns can be realized by switching the mode of the controller, making it possible to easily set the intermittent time for each pipeline, and reducing the loss of lubricating oil.

Next, if necessary, the switching valve is connected to a primary discharge port connected to the discharge port of the pump, a primary release port opened to the lubricating oil reservoir, and the first depressurization line. A secondary side first decompression line port, a secondary side second decompression line port connected to the second decompression line, and a secondary side non-decompression line port connected to the non-decompression line. A first passage communicating with the primary-side discharge port and the secondary-side first decompression pipe port; a first solenoid valve that opens and closes the first passage by energization / non-energization; and the first passage. A first drain communicating with the primary side open port; a first on-off valve that closes the first drain when the first solenoid valve is opened; and that opens the first drain when the first solenoid valve is closed; Primary side discharge port and secondary side second decompression line port A second passage that communicates with the second passage, a second solenoid valve that opens and closes the second passage by energization / non-energization, a second drain that communicates with the second passage and the primary side open port, and the second solenoid valve The second drain is closed when the second solenoid valve is opened, and the second drain valve is opened when the second solenoid valve is closed, and communicates with the primary discharge port and the secondary non-depressurization line port. A configuration including a third passage and a third solenoid valve that opens and closes the third passage by energization / non-energization, and a controller that individually drives the first, second, and third solenoid valves It is said.
Since the first, second and third solenoid valves of the switching valve are opened / closed by energization / non-energization and the pump is operated to supply the lubricating oil to each pipeline, it can be easily incorporated into the system.

Further, if necessary, the controller includes an operation of the pump, a stop mode in which the first solenoid valve, the second solenoid valve, and the third solenoid valve are turned off, and the second and third solenoid valves. A first supply of lubricating oil to the first depressurization line by synchronously turning on / off the pump and turning on / off the first solenoid valve with the second and third passages closed. The on / off operation of the pump and the on / off of the second solenoid valve are synchronized in the depressurization line supply mode and the first and third passages closed by the first and third solenoid valves. A second depressurization line supply mode for supplying lubricating oil to the second depressurization line and closing the first and second solenoid valves by the first and second solenoid valves. In this state, the third solenoid valve is turned on / off in synchronization with the pump operation on / off, and the four modes of the non-depressurization pipe supply mode for supplying lubricating oil to the non-depressurization pipe It has a function to set to either.
Various lubrication patterns can be realized by switching the mode of the controller, making it possible to easily set the intermittent time for each pipeline, and reducing the loss of lubricating oil.

Furthermore, if necessary, a valve piped to the first decompression pipe and the second decompression pipe is reciprocated by the pressurization and depressurization of the lubricant and discharges the lubricant. A single metering valve provided with one discharge port corresponding to the piston is configured, while the valve connected to the non-depressurization pipe is reciprocated in order by pressurization of the lubricating oil, and the lubricating oil And a progressive type metering valve provided with a plurality of pairs of a pair of discharge ports corresponding to the pistons.
Each valve can surely satisfy the lubrication condition of the lubrication site.

  In addition, the lubricating oil supply apparatus of the present invention for achieving the above-described object is provided with a valve that feeds the lubricating oil and is operated by pressurizing and depressurizing the lubricating oil to discharge the lubricating oil. A pressure relief line that needs to be depressurized for operation and a lubricating oil are supplied, and a valve that discharges the lubricating oil is provided by pressurizing the lubricating oil, and no depressurization is required for the operation of the valve In a lubricating oil supply apparatus that can supply lubricating oil to each of a plurality of pipelines, each of which includes at least one of the decompression pipeline and the non-decompression pipeline. A plurality of pipelines in parallel, and one pump for supplying lubricating oil to the pipelines of the plurality of pipelines, and a single pump that is integrally connected to the pump and connected to be switched. Enable to supply lubricating oil from the pump to any one of them And a changeover valve.

  As a result, by switching the switching valve, the function of each pipeline can be achieved with one pump in each pipeline of the lubrication system having at least one of the decompression pipeline and the non-decompression pipeline. Lubricating oil can be supplied without loss, and the system can be simplified and the cost can be reduced. Further, for example, a part that secures the amount of oil supplied once per unit time, and a part that secures a predetermined amount of oil per unit time by reducing the amount of oil supplied once and dividing it into several times. Even if there are multiple lines of pipes with different intermittent times, the intermittent time can be set for each pipe line. Thus, the loss of lubricating oil supplied can be reduced. Furthermore, since the switching valve is integrally attached to the pump, it is compact and easy to handle, and the piping work can be simplified and the installation work efficiency can be improved as compared with the case where the switching valve is provided separately. it can.

  More specifically, a first pressure relief pipe that is supplied with lubricating oil and is operated by pressurizing and depressurizing the lubricating oil to discharge the lubricating oil, and requires depressurization for the operation of the valve. There are two systems of depressurization pipes composed of a passage and a second depressurization pipe, and a valve that feeds the lubricating oil and discharges the lubricating oil by pressurizing the lubricating oil and removes it for the operation of the valve. In the lubricating oil supply apparatus capable of feeding lubricating oil to three systems of pipes, one system of non-depressurizing pipes that do not require pressure, the first decompression pipe, the second decompression pipe, and the non-decompression pipe One pump that feeds the lubricating oil stored in the lubricating oil reservoir, and is connected to and connected to the pump integrally to be switched from the first depressurization conduit, the second depressurization conduit, and the non-depressurization conduit The lubricating oil from the pump can be fed to any one of the three pipelines. A switching valve that makes it possible to depressurize the first depressurizing line when not connected to the first depressurizing line, and depressurize the second depressurizing line when not connected to the second depressurizing line. ing.

Thus, only by switching the switching valve, one pump can be connected to any one of the first decompression conduit, the second decompression conduit, and the non-decompression conduit, and the first decompression conduit and the second decompression conduit. Since the first decompression pipe and the second decompression duct can be depressurized when they are not connected to each other, the functions of the three systems of the first decompression duct, the second decompression duct, and the non-decompression duct are provided. Lubricating oil can be supplied to each pipeline with one pump without damaging, and the system can be simplified and the cost can be reduced.
Further, since the lubricating oil can be supplied by dividing the first depressurizing line and the second depressurizing line, the degree of freedom in supplying the lubricating oil is increased, and the intermittent time of the first depressurizing line and the second depressurizing line is reduced. Lubricating oil can be supplied in different ways, for example, a part where the amount of oil is ensured by one refueling per unit time, and the amount of oil that is reduced once is divided into several times to supply the unit time Even if there is a mixture of parts that ensure a certain amount of oil per unit, it will be possible to supply lubricating oil correspondingly and reduce the loss of lubricating oil compared to conventional lubrication systems Can do.

If necessary, the switching valve is connected to a primary side discharge port connected to the discharge port of the pump, a primary side open port opened to the lubricating oil reservoir side, and a second side connected to the first depressurization line. At least five of the secondary side first decompression pipeline port, the secondary side secondary decompression pipeline port connected to the second decompression pipeline, and the secondary side non-decompression pipeline port connected to the non-decompression pipeline The primary side discharge port and the secondary side first decompression line port, and the primary side open port, secondary side second decompression line port, and secondary side non-decompression line port. Is connected to the primary side discharge port and the secondary side second decompression line port while the primary side discharge port and the secondary side first pressure release line port are disconnected from each other. Side open port, secondary side first decompression A second depressurization line supply position for blocking the main port and the secondary non-depressurization duct port from the primary discharge port and the secondary second depressurization duct port, the primary discharge port and the secondary nondesorption Can be connected to a pressure line port and can be moved to three positions of a non-decompression line supply position for connecting the secondary side first decompression line port and the secondary side second decompression line port to the primary side open port. And a solenoid valve provided with a magnetic field generating mechanism for moving the spool to any one of the first decompression pipe supply position, the second decompression pipe supply position, and the non-decompression pipe supply position. doing.
Since the switching valve is a solenoid valve, it can be easily incorporated into the system.

If necessary, the switching valve is connected to a primary side discharge port connected to the discharge port of the pump, a primary side open port opened to the lubricating oil reservoir side, and a second side connected to the first depressurization line. A secondary side first decompression line port, a secondary side second decompression line port connected to the second decompression line, and a secondary side non-decompression line port connected to the non-decompression line, A first passage communicating with the primary-side discharge port and the secondary-side first decompression pipe port; a first solenoid valve that opens and closes the first passage by energization / non-energization; the first passage and the primary A first drain that communicates with a side opening port; a first on-off valve that closes the first drain when the first solenoid valve is opened and opens the first drain when the first solenoid valve is closed; and the primary side For the discharge port and the secondary side second decompression line port A second passage that communicates, a second solenoid valve that opens and closes the second passage by energization / non-energization, a second drain that communicates with the second passage and the primary side open port, and a second solenoid valve A second open / close valve that closes the second drain when opened and opens the second drain when the second solenoid valve is closed, and a first communication port that communicates with the primary discharge port and the secondary non-depressurization line port. 3 passages and a third solenoid valve that opens and closes the third passage by energization / non-energization, and a controller that individually drives the first, second, and third solenoid valves. .
Since the first, second and third solenoid valves of the switching valve are opened / closed by energization / non-energization and the pump is operated to supply the lubricating oil to each pipeline, it can be easily incorporated into the system.

Further, the switching valve can be attached to and detached from the pump as required.
Instead of the switching valve, for example, a block provided with a discharge port dedicated to the non-depressurization line can be attached, so that it can be easily replaced with another form of pump, and versatility can be increased.

  According to the lubrication system of the present invention, one pump for supplying lubricating oil to a plurality of pipelines having at least one of a decompression pipeline and a non-decompression pipeline, and a pump Since there is a switching valve that is connected and switched so that lubricating oil from the pump can be fed to any one of a plurality of pipelines, one pump does not impair the function of each pipeline Lubricating oil can be supplied, and the system can be simplified and the cost can be reduced. Intermittent time can be set for each pipeline of a plurality of systems, and loss of lubricating oil to be supplied can be reduced as compared with a conventional lubrication system.

  Further, according to the lubrication system of the present invention, one pump for feeding the lubricating oil stored in the lubricating oil reservoir to the first depressurizing pipe, the second depressurizing pipe, and the non-depressurizing pipe, and the pump are integrated. The lubricant oil from the pump can be supplied to any one of the three systems consisting of the first decompression pipeline, the second decompression pipeline, and the non-decompression pipeline. And a switching valve that enables the first depressurization line to be depressurized at least when not connected to the first depressurization line, while allowing the second depressurization line to be depressurized when not connected to the second depressurization line. Since it is equipped, it becomes possible to supply lubricating oil with one pump to each pipeline without impairing the functions of the three systems of the first decompression pipeline, the second decompression pipeline and the non-decompression pipeline, simplifying the system Cost reduction. Further, the lubricating oil can be supplied by changing the intermittent time of the first depressurizing line and the second depressurizing line, respectively, and the loss of the lubricating oil to be supplied can be reduced as compared with the conventional lubricating system. .

  According to the lubricating oil supply apparatus of the present invention, one pump for supplying lubricating oil to a plurality of lines having at least one of a depressurizing line and a non-depressurizing line, A switching valve that is integrally attached to the pump and connected and switched to enable the lubricating oil from the pump to be fed to any one of a plurality of pipelines. Lubricating oil can be supplied by one pump without impairing the function of each pipe line, and the system can be simplified and the cost can be reduced. In addition, an intermittent time can be set for each pipe line, the degree of freedom in the way of supplying the lubricating oil is increased, and the loss of the lubricating oil to be supplied can be reduced as compared with the conventional lubricating system. . Furthermore, it is compact and easy to handle, the piping work can be simplified, and the installation work efficiency can be improved.

  Moreover, according to the lubricating oil supply apparatus of the present invention, one pump that feeds the lubricating oil stored in the lubricating oil reservoir to the first depressurizing conduit, the second depressurizing conduit, and the non-depressurizing conduit, and the pump Lubricating oil from the pump can be fed to any one of the three systems consisting of the first decompression conduit, the second decompression conduit, and the non-decompression conduit. And a switching valve that enables at least the first depressurization line to be depressurized when not connected to the first depressurization line, while allowing the second depressurization line to be depressurized when not connected to the second depressurization line Therefore, lubricating oil can be supplied to each pipeline with one pump without impairing the functions of the three systems of the first decompression pipeline, the second decompression pipeline, and the non-decompression pipeline. Can be simplified to reduce the cost. Further, since the lubricating oil can be supplied by dividing the first depressurizing conduit and the second depressurizing conduit, the degree of freedom in the way of supplying the lubricating oil is increased, and the intermittent time of the first depressurizing conduit and the second depressurizing conduit is increased. It is also possible to supply the lubricating oil with different values, and it is possible to reduce the loss of the lubricating oil supplied as compared with the conventional lubricating system. Furthermore, it is compact and easy to handle, the piping work can be simplified, and the installation work efficiency can be improved.

  Hereinafter, based on an accompanying drawing, a lubricating system concerning an embodiment of the invention and a lubricating oil supply device used for this lubricating system are explained in detail. The lubrication system according to the embodiment of the present invention is provided in, for example, a resin or metal injection molding machine. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as the above.

1 to 11 show a lubrication system according to an embodiment of the present invention and a lubricating oil supply device S1 according to the first embodiment. In the lubrication system according to the embodiment, as shown in FIG. 1, a part that requires a relatively small amount of oil supply such as a toggle part and a part that requires a relatively large amount of oil supply such as an open ball screw without a seal. And divide. And in the part where the amount of oil supply may be relatively small, the part that secures the predetermined amount of oil per unit time with one oil supply, and the oil supply amount is made smaller and divided into several times. It is divided into parts that secure a predetermined amount of oil supply per unit time.
Each of these portions where the amount of oil supply may be relatively small includes a single piston (not shown) that is reciprocated by the pressurization and depressurization of the lubricant and discharges the lubricant, and 1 corresponding to this piston. One discharge port is provided, and a single shot valve discharge amount of about 0.03 ml to 1.5 ml is used and piped to a plurality of corresponding locations.

  On the other hand, in a portion that requires a relatively large amount of oil supply, a plurality of pistons (not shown) that are reciprocated in order by pressurization of the lubricating oil to discharge the lubricating oil and a pair of discharges corresponding to the pistons. The pipes are piped to a plurality of corresponding locations using a well-known traveling type metering valve Vs having a plurality of sets of outlets. In the progress type metering valve Vs, the discharge amount per one stroke of the piston is set to about 0.1 ml, for example, the piston is operated for a predetermined stroke and stopped for a predetermined time, and a relatively large amount of lubricating oil is intermittently supplied in a fixed amount. doing.

Since the single metering valve Vt is operated by pressurizing and depressurizing the lubricating oil to discharge the lubricating oil, the depressurizing is necessary. The two systems of depressurization pipes Pt include a first depressurization pipe Pt1 provided with a single metering valve Vt (Vt1) provided at a site that secures a predetermined amount of oil per unit time by one refueling, A second depressurization line Pt2 provided with a single metering valve Vt (Vt2) provided at a site that reduces the amount of oil supplied once and supplies oil in several times to ensure a predetermined amount of oil per unit time. It consists of.
On the other hand, the progressive metering valve Vs does not perform depressurization in order to maintain the pressure in the pipe when the pump 10 is stopped and to discharge the lubricating oil from the progressive metering valve Vs without excess or deficiency so as to make the discharge amount accurate. It is provided in the decompression line Ps.

  In the lubrication system according to the embodiment, the first embodiment is capable of supplying lubricating oil to the three systems of the first decompression conduit Pt1, the second decompression conduit Pt2, and the non-decompression conduit Ps. The lubricating oil supply device S1 according to the embodiment is used. As shown in FIGS. 2 to 10, the basic configuration of the lubricating oil supply device S1 is that lubricating oil is stored in a first depressurizing pipe Pt1, a second depressurizing pipe Pt2, and a non-depressurizing pipe Ps provided in parallel. Three pumps that feed the lubricating oil stored in the section 20 and that are connected to the pump 10 and are switched to each other, which includes a first pressure-reducing pipe line Pt1, a second pressure-reducing pipe line Pt2, and a non-pressure-reducing pipe line Ps. The lubricating oil from the pump 10 can be supplied to any one of the pipelines, and at least when not connected to the first decompression pipeline Pt1 and the second decompression pipeline Pt2, the first decompression pipeline Pt1. And a switching valve 30 that makes it possible to depressurize the second depressurization pipe line Pt2.

  Specifically, as shown in FIGS. 2 to 4, the pump 10 is a plunger type pump including a piston 11 and a cylinder 12, and is reciprocally driven by a drive motor 13 via a cam mechanism 14. A lubricating oil reservoir 20 is provided on the upper side of the pump 10, and a mounting portion 15 for the switching valve 30 is formed on the lower side. As shown in FIG. 4, the lower mounting portion 15 of the pump 10 is provided with a discharge port 16 for discharging lubricating oil, and a return port 17 communicating with the lubricating oil storage unit 20 and opened is exposed. Is provided. As shown in FIG. 2, the lubricating oil reservoir 20 includes a lubricating oil cartridge 21, a cartridge mounting portion 22 to which the cartridge 21 is mounted, and a cover 23 that is attached to the cartridge mounting portion 22 and covers the cartridge 21. It is prepared for.

  As shown in FIGS. 1 to 3 and FIGS. 5 to 11, the switching valve 30 is composed of a solenoid valve, and is connected to the primary discharge port 31 connected to the discharge port 16 of the pump 10 and the return port 17 of the pump 10. A primary side opening port 32 that opens to the connected lubricating oil reservoir 20 side, a secondary side first decompression line port 33 that is connected to the first pressure relief line Pt1, and a second line that is connected to the second pressure release line Pt2. The secondary side non-decompression line port 35 connected to the secondary side second decompression line port 34 and the non-decompression line Ps has a primary side discharge port 31 and a secondary side first depressurization line port 33. First, the primary side open port 32, the secondary side second decompression line port 34, and the secondary side non-decompression line port 35 are disconnected from the primary side discharge port 31 and the secondary side first decompression line port 33. 1 Decompression line supply position A, primary discharge port 31 and the secondary side second decompression line port 34 are connected, and the primary side open port 32, the secondary side first decompression line port 33 and the secondary side non-decompression line port 35 are connected to the primary side discharge port 31 and The secondary decompression line supply position B and the primary discharge port 31 that are blocked from the secondary side second decompression line port 34 are connected to the secondary side non-decompression line port 35 and the primary side open port 32 and secondary are connected. The spool 40 is movable to three positions of a non-decompression line supply position C for connecting the first side pressure release line port 33 and the secondary side second pressure release line port 34, and the spool 40 is connected to the first pressure release line. The magnetic field generating mechanism 50 is configured to move to any one of the supply position A, the second decompression pipe supply position B, and the non-decompression pipe supply position C, and a switching passage 37 through which the spool 40 is inserted. ing.

Three primary side discharge ports 31 are provided, and each primary side discharge port 31 is concentrated in a primary side discharge aggregation port 31 a provided on the upper surface of the switching valve 30. The primary discharge aggregation port 31 a is connected to the discharge port 16. The primary discharge ports 31 and the discharge ports 16 are connected to each other through the primary discharge aggregation port 31a.
These three primary discharge ports 31 are arranged in a line in the switching passage 37, and the primary discharge ports 31 (31b) provided on one side in the axial direction of the switching passage 37 among the primary discharge ports 31 are two. The primary-side discharge port 31 (31c) provided on the other side in the axial direction of the switching passage 37 is connected to the secondary-side first pressure-reduction pipe port 33, and the secondary-side first pressure-reduction pipe is connected to the secondary-side second pressure-reduction pipe port 34. The primary discharge port 31 (31d) located between the passage port 33 and the secondary side second decompression conduit port 34 can be connected to the secondary non-decompression conduit port 35 via the switching passage 37, respectively. Has been.

Two primary side open ports 32 are provided. Each primary side open port 32 is concentrated in a primary side open aggregate port 32 a provided on the upper surface of the switching valve 30. The primary side open aggregation port 32 a is connected to the return port 17. The primary side open port 32 and the return port 17 are connected via the primary side open aggregate port 32a.
The two primary side open ports 32 are provided one by one outside both the primary side discharge ports 31 of the switching passage 37. Of the two primary side open ports 32, the primary side open port 32 (32 b) on one side in the axial direction of the switching passage 37 is connected to the secondary side first decompression pipe port 33, and the other side in the axial direction of the switching passage 37. The primary side open port 32 (32c) is provided so as to be connectable to the secondary side first decompression pipe port 33 via the switching passage 37, respectively.

The secondary-side first decompression pipe port 33 and the secondary-side second decompression pipe port 34 communicate with the switching passage 37, and the first decompression pipe Pt1 and the second decompression pipe on the front side of the switching valve 30. A female screw for connecting Pt2 is provided. Further, the secondary side first decompression pipe port 33 is provided on one axial side of the switching passage 37, and the secondary side second decompression pipe port 34 is provided on the other axial side of the switching passage 37.
The secondary-side non-decompression line port 35 communicates with the switching passage 37 and has a female screw for connecting the non-de-pressure line Ps to the lower surface side of the switching valve 30.
The secondary-side non-decompression conduit port 35 is located between the secondary-side first decompression conduit port 33 and the secondary-side second decompression conduit port 34 of the switching passage 37.

As shown in FIGS. 2, 8 to 10, the spool 40 is formed in a cylindrical shape, is provided coaxially with the shaft of the switching passage 37 and is in sliding contact with the inner wall of the switching passage 37.
Further, on the outer surface of the spool 40, the primary side discharge port 31 (31 b) and the secondary side first pressure release pipe port 33 are connected at the first pressure release pipe supply position A and the non-pressure release pipe supply position C is provided. The first groove 41 for connecting the primary side open port 32 (32b) and the secondary side first decompression pipe port 33, the primary side discharge port 31 (31c), and the secondary side second decompression pipe port 34 are connected to each other. A second groove 42 for connecting and connecting the primary side open port 32 (32c) and the secondary side second decompression line port 34 at the non-decompression line supply position C, and the primary side discharge at the non-decompression line supply position C A third groove 43 that connects the port 31 (31d) and the secondary-side non-decompression conduit port 35 is provided.
The spool 40 is inserted through the spool 40 and is urged by a coil spring 45 provided on each of the one side and the other side of the spool 40, and is normally positioned at the neutral position of the non-depressurization conduit supply position C. Yes.

The magnetic field generation mechanism 50 includes a first solenoid 50a (50) provided on one side of the spool 40 in the axial direction and a second solenoid 50b (50) provided on the other side. Either one of the first and second solenoids 50a (50), 50b (50) is configured to be energized, and in the energized ON state, the pressing portion 51 that presses the spool 40 is protruded by excitation. While the spool 40 is pressed, the pressing of the spool 40 is stopped in a non-energized OFF state. The pair of left and right coil springs 45 is for positioning the spool 40 at the neutral position.
The first solenoid 50a (50) is provided on one side in the axial direction of the spool 40. When the first solenoid 50a (50) is energized and turned on, the pressing portion 51 is protruded as shown in FIG. Is moved to the second decompression line supply position B.
The second solenoid 50b (50) is provided on the other side in the axial direction of the spool 40. When the second solenoid 50b (50) is energized and turned on, the pressing portion 51 protrudes as shown in FIG. Is moved to the first decompression line supply position A.
When the first and second solenoids 50a (50), 50b (50) are not energized and are in the OFF state, the spool 40 is first driven by the biasing force of the coil spring 45 as described above, as shown in FIG. It is returned from the depressurization pipe supply position A or the second depressurization pipe supply position B and is positioned at the neutral position of the non-depressurization pipe supply position C.
In the figure, 38 is a vacant port formed on processing and is closed by a plug.

  The switching valve 30 is detachably attached to the pump 10. Specifically, the mounting portion 15 of the pump 10 and the mounted portion 55 of the switching valve 30 are formed in close contact with each other, and as shown in FIG. As shown in FIG. 5, a bolt (not shown) that engages with the female screw 24 of the pump 10 is inserted into the switching valve 30 and pressed toward the pump 10 by the bolt head. Four attachment holes 56 for attaching the switching valve 30 to the pump 10 are provided. The switching valve 30 is attached to the pump 10 by inserting a bolt through the mounting hole 56 and screwing it into the female screw 24 with the mounting portion 15 of the pump 10 and the mounted portion 55 of the switching valve 30 being in close contact with each other. . Moreover, the switching valve 30 is removed by loosening and removing the bolt. Therefore, the switching valve 30 can be easily integrated with the pump 10. Further, since the switching valve 30 is provided integrally with the pump 10, it is more compact and easy to handle than when the switching valve 30 is provided separately. Although not shown, instead of the switching valve 30, a block that is attached to the mounting portion 15 of the pump 10 with a bolt and that has a connection port that communicates only with the discharge port 16 of the pump 10 can be mounted. Thereby, for example, it can be set as the lubricating oil supply apparatus S1 for exclusive use of the non-decompression pipe line Ps.

  Further, in this lubrication system, the drive motor 13 of the pump 10 of the lubricating oil supply device S1 and the first solenoid 50a (50) and the second solenoid 50b (50) of the magnetic field generation mechanism 50 of the switching valve 30 are controlled. A controller 60 is provided. The controller 60 stops the pump 10 at the non-decompression position of the spool 40, and causes the magnetic field generating mechanism 50 to position the spool 40 at the first depressurization line supply position A and operate the pump 10 to perform the first operation. The first depressurization line supply mode Mt1 for supplying lubricating oil to the first depressurization line Pt1, and the magnetic field generating mechanism 50 positions the spool 40 at the second depressurization line supply position B and operates the pump 10 to activate the second depressurization line Pt1. The second depressurization line supply mode Mt2 for supplying lubricating oil to the pressure line Pt2, and the spool 40 is positioned at the non-depressurization line supply position C by the magnetic field generating mechanism 50 and the pump 10 is operated to operate the non-depressurization line Ps. Is set to one of four modes: a non-depressurization line supply mode Ms for supplying lubricating oil to

More specifically, as shown in FIG. 11, the controller 60 turns on and off the pump 10, turns on and off the first solenoid 50a (50), and turns on and off the second solenoid 50b (50). ing. That is, in the stop mode Mr, the controller 60 turns off the first and second solenoids 50a (50), 50b (50) to place the spool 40 at the non-depressurization line supply position C and turns off the pump 10. In the first depressurization line supply mode Mt1, the first solenoid 50a (50) is turned off, the second solenoid 50b (50) is turned on, the spool 40 is positioned at the first depressurization line supply position A, and the pump 10 is turned on. In the second depressurization line supply mode Mt2, the second solenoid 50b (50) is turned off, the first solenoid 50a (50) is turned on, and the spool 40 is positioned at the second depressurization line supply position B. Is turned on, and in the non-depressurization pipeline supply mode Ms, the first and second solenoids 50a (50), 50b (50) are turned off and 40 to turn on pump 10 with is located in the non-de-pressure line supplying position C.
The function of the controller 60 is realized by functions such as a timer that can be set in time and a microcomputer. The order of the modes and the intermittent time may be appropriately changed according to the lubrication conditions.

Accordingly, when the lubricating oil supply device S1 according to the first embodiment is used in the lubrication system according to this embodiment, as shown in FIG. Is connected to the first decompression conduit Pt1, the second decompression conduit Pt2 is connected to the secondary second decompression conduit port 34, and the non-decompression conduit Ps is connected to the secondary non-decompression conduit port 35. .
Next, when lubrication is performed by the lubrication system according to this embodiment and the lubricating oil supply device S1 according to the first embodiment, the following is performed. Here, as shown in FIG. 11, the lubricating oil supply device S1 is controlled by the controller 60 using the first depressurization pipe supply mode Mt1, the stop mode Mr, the second depressurization pipe supply mode Mt2, the stop mode Mr, and the non-depressurization pipe. A case will be described in which the path supply mode Ms, the stop mode Mr, the second decompression pipe supply mode Mt2, and the stop mode Mr are operated as one cycle.

  First, when the controller 60 is set from the stop mode Mr to the first decompression pipe supply mode Mt1 to operate the lubricating oil supply device S1, as shown in FIG. 11, the pump 10 is turned on, the first solenoid 50a ( 50) is turned off and the second solenoid 50b (50) is turned on in synchronization. As a result, as shown in FIG. 9, in the switching valve 30, since the second solenoid 50b (50) is energized, the spool 40 is positioned at the first pressure relief line supply position A, and the primary side discharge port. 31 (31b) and the secondary side first decompression line port 33 are connected. At this time, the secondary side second decompression line port 34 and the secondary side non-decompression line port 35 are disconnected from the primary side discharge port 31. Therefore, the lubricating oil from the primary discharge central port 31a is supplied to the first decompression conduit Pt1 through the primary discharge port 31 (31b), the first groove 41, and the secondary first decompression conduit port 33. Is done. At this time, as shown in FIG. 1, the lubricating oil is supplied from the single metering valve Vt (Vt1) to each portion where the amount of oil supply may be relatively small.

  Then, as shown in FIG. 11, after a predetermined time, the controller 60 changes from the first depressurization line supply mode Mt1 to the stop mode Mr, and the operation of the pump 10 is turned off and the second solenoid 50b (50) is turned off. It is done. Thereby, in the switching valve 30, since the spool 40 is off when the second solenoid 50b (50) is de-energized, the coil spring 45 is returned to the non-depressurization line supply position C, and the spool 40 is moved to the primary side. The discharge port 31 (31d) and the secondary side non-decompression line port 35 are connected, and the primary side open port 32 and the secondary side first and second depressure line ports 33 and 34 are connected. Therefore, since the primary side open port 32 (32b) and the secondary side first decompression pipe port 33 are connected, the hydraulic pressure of the first decompression pipe Pt1 is released to the lubricating oil reservoir 20 side and the first decompression pipe. The path Pt1 is depressurized.

Next, as shown in FIGS. 8 and 11, since the controller 60 is in the stop mode Mr, the operation of the pump 10 is turned off and the first and second solenoids 50a (50), 50b (50) are turned off in synchronization. Thus, no lubricating oil is supplied from the lubricating oil supply device S1, and the single metering valve Vt and the progressive metering valve Vs do not operate.
In this state, when a predetermined time elapses, as shown in FIG. 11, the controller 60 operates the lubricating oil supply device S1 in the second depressurization conduit supply mode Mt2, and the pump 10 is turned on, and the first solenoid 50a (50 ) And the second solenoid 50b (50) are turned off synchronously. As a result, as shown in FIG. 10, in the switching valve 30, since the first solenoid 50a (50) is energized, the spool 40 is located at the second pressure relief line supply position B, and the primary side discharge port 31 (31c) and the secondary side second decompression line port 34 are connected. Therefore, the lubricating oil from the primary discharge central port 31a is supplied to the second decompression conduit Pt2 through the primary discharge port 31 (31c), the second groove 42, and the secondary second decompression conduit port 34. It will be done. At this time, the secondary side first decompression line port 33 and the secondary side non-decompression line port 35 are disconnected from the primary side discharge port 31. At this time, as shown in FIG. 1, the lubricating oil is supplied from the single metering valve Vt (Vt2) to each portion where the amount of oil supply may be relatively small.

  As shown in FIGS. 10 and 11, after a predetermined time, the controller 60 changes from the second depressurization line supply mode Mt2 to the stop mode Mr, the pump 10 is turned off, and the first solenoid 50a (50) is turned off. The second solenoid 50b (50) is turned off in synchronization. As a result, as shown in FIG. 8, in the switching valve 30, the spool 40 is returned to the non-depressurization line supply position C by the coil spring 45 because the spool 40 is off when the first solenoid 50 a (50) is not energized. The spool 40 connects the primary-side discharge port 31 (31d) and the secondary-side non-decompression line port 35, the primary-side open port 32, the secondary-side first and second de-pressure line ports 33 and 34, and Connect. Therefore, since the primary side open port 32 and the secondary side second decompression pipe port 34 are connected, the hydraulic pressure of the second decompression pipe Pt2 is released to the lubricating oil reservoir 20 side and the second decompression pipe Pt2 is opened. It will be depressurized.

  Next, when a predetermined time elapses in the stop mode Mr of the controller 60 as described above, the controller 60 changes from the stop mode Mr to the non-decompression line supply mode Ms, and as shown in FIGS. The operation is turned on, the first solenoid 50a (50) is turned off, and the second solenoid 50b (50) is turned off in synchronization. Thus, as shown in FIG. 8, in the switching valve 30, since the spool 40 is off when the first and second solenoids 50 a (50) and 50 b (50) are not energized, the coil spring 45 supplies the non-depressurization line. The primary side discharge port 31 (31d) and the secondary side non-depressurization line port 35 are connected to each other at the position C, and the primary side open port 32 and the secondary side first and second depressure line ports 33, 34 is connected. Therefore, the lubricating oil from the primary discharge central port 31a is supplied to the non-decompression conduit Ps through the primary discharge port 31 (31d), the third groove 43, and the secondary non-decompression conduit port 35. Go. At this time, lubricating oil is supplied from the progressive metering valve Vs to each part that requires a relatively large amount of oil supply.

  In this state, after a predetermined time, the controller 60 changes from the non-depressurization conduit supply mode Ms to the stop mode Mr, and the operation of the pump 10 and the second solenoid 50b (50) are turned off in synchronization. At this time, since the operation of the pump 10 is off, the lubricating oil is not supplied to the non-depressurization line Ps.

  Next, as shown in FIG. 11, the controller 60 enters the second depressurization line supply mode Mt2 after a predetermined time has elapsed in this state, and the lubricating oil is supplied to the second depressurization line Pt2 in the same manner as described above. Thereafter, the controller 60 enters the stop mode Mr, and the second depressurization conduit Pt2 is depressurized.

Such a cycle is repeated, and at a portion where the amount of oil is ensured by one time of refueling per unit time, the number of times of oiling is reduced by several times from the single metering valve Vt provided in the first depressurization pipe line Pt1. For parts that secure a predetermined amount of oil per unit time by dividing the oil into two parts, the single metering valve Vt provided in the second depressurization pipe Pt2 is not used for parts that require a relatively large amount of oil. Lubricating oil is supplied from each of the progressive flow valves Vs provided in the pressure line Ps. Thereby, since it is divided into the 1st decompression pipe line Pt1, the 2nd decompression pipe line Pt2, and the non-decompression pipe line Ps, the freedom degree of the way of lubricating oil supply becomes high. That is, the lubricating oil can be supplied by changing the intermittent time of the first depressurizing pipe line Pt1 and the second depressurizing pipe line Pt2, respectively, for example, a portion that secures the oil supply amount by one oil supply per unit time; Even if there is a mixture of parts that reduce the amount of oil supplied once and divide it into several times to ensure a predetermined amount of oil per unit time, it will be possible to supply lubricating oil accordingly. The loss of the lubricating oil to be supplied can be reduced as compared with the conventional lubrication system.
Further, the lubricating oil can be supplied to the three pipelines by one pump 10, and the first and second decompression pipelines Pt1 and Pt2 can be depressurized only by switching the switching valve 30. It is not necessary to provide a separate pump 10, and the system can be simplified accordingly, and the cost can be reduced.

Next, in the lubrication system according to the above-described embodiment, a second embodiment in which the lubricating oil can be supplied to the three systems of the decompression pipelines Pt1, Pt2 and the non-decompression pipeline Ps of the two systems. The lubricating oil supply apparatus will be described.
As shown in FIGS. 12 to 18, the lubricating oil supply device S2 is different from the first embodiment in the configuration of the switching valve. The switching valve 70 of the lubricating oil supply device S2 according to the second embodiment includes a primary discharge port 71 connected to the discharge port 16 of the pump 10 and a primary opening port 72 opened to the lubricating oil reservoir 20 side. , Secondary side first decompression conduit port 73 connected to the first decompression conduit Pt1, secondary secondary decompression conduit port 74 connected to the second decompression conduit Pt2, and non-decompression conduit Ps The first passage 76 has a secondary non-decompression conduit port 75 that communicates with the primary discharge port 71 and the secondary first decompression conduit port 73, and the first passage 76 by energization / non-energization. A first solenoid valve 77 that opens and closes, a first drain 78 that communicates with the first passage 76 and the primary side opening port 72, and the first drain 78 is closed when the first solenoid valve 77 is opened, and the first solenoid valve 77 1st drain 78 is opened when is closed A first opening / closing valve 79, a second passage 80 communicating with the primary side discharge port 71 and the secondary side second decompression pipe port 74, and a second solenoid valve opening and closing the second passage 80 by energization / non-energization. 81, a second drain 82 communicating with the second passage 80 and the primary side open port 72, the second drain 82 closed when the second solenoid valve 81 is opened, and the second drain 82 when the second solenoid valve 81 is closed. A third opening / closing valve 83 that opens the valve, a third passage 84 that communicates with the primary-side discharge port 71 and the secondary-side non-depressurization conduit port 75, and a third passage that opens and closes the third passage 84 by energization / non-energization. A solenoid valve 85 is provided.
The lubricating oil supply device S2 includes a controller 100 that individually drives the first, second, and third solenoid valves 77, 81, and 85.

  Three primary-side discharge ports 71 are provided, and each primary-side discharge port 71 (71b, 71c, 71d) is concentrated in a primary-side discharge aggregation port 71a provided on the upper surface of the switching valve 70. The primary side discharge aggregation port 71 a is connected to the discharge port 16. Each primary side discharge port 71 (71b, 71c, 71d) and the discharge port 16 are connected via this primary side discharge collection port 71a.

Two primary side open ports 72 are provided. Each primary side open port 72 (72b, 72c) is concentrated in a primary side open aggregation port 72a provided on the upper surface of the switching valve 70. The primary side open aggregation port 72 a is connected to the return port 17. The primary side open ports 72 (72b, 72c) and the return port 17 are connected via the primary side open aggregation port 72a.
The secondary side first decompression line port 73, the secondary side second decompression line port 74, and the secondary side non-decompression line port 75 are provided on the front surface of the switching valve 70, and the first decompression line Pt1 and the second decompression line Pt1. A female screw for connecting the 2 depressurization conduit Pt2 and the non-depressurization conduit Ps is formed.

The first and second passages 76 and 80 include small diameter portions 76a and 80a on the primary discharge port 71 side and large diameter portions 76b and 80b provided continuously on the secondary side of the small diameter portions 76a and 80a.
The first solenoid valve 77 is in contact with the primary discharge port 71 (71a) and can close the first passage 76, and a coil spring 87 for biasing the ball 86 toward the primary discharge port 71. And a first solenoid 77a for pulling the ball 86 by excitation against the coil spring 87. Similarly to the first solenoid valve 77, the second solenoid valve 81 is in contact with the primary discharge port 71 (71b) and can close the second passage 80, and the ball 88 is connected to the primary discharge port. The coil spring 89 is configured to be biased toward the 71 side, and a second solenoid 81 a that pulls the ball 88 by excitation against the coil spring 89 is configured. The third solenoid valve 85 further includes a ball 90 that can contact the opening of the primary discharge port 71 and close the third passage 84, and a coil spring that urges the ball 90 toward the primary discharge port 71. 91 and a third solenoid 85a that pulls the ball 90 against the coil spring 91 by excitation.

  When the first, second and third solenoid valves 77, 81 and 85 are energized and turned on, the first, second and third solenoids 77a, 81a and 85a are excited to pull the balls 86, 88 and 90. The primary discharge port 71 is opened to open the corresponding first, second, and third passages 76, 80, 84, respectively, while the first, second, and third solenoids 77a, 81a are turned off in a non-energized state. 85a is stopped, and the primary side discharge port 71 is closed by the balls 86, 88, 90 by the biasing of the coil springs 87, 89, 91, and the first, second and third passages 76, 80, 84 are closed. Are closed.

The first drain 78 is provided in the large diameter portion 76b of the first passage 76 so as to be coaxial with the axis of the first passage 76, and has an opening 78a into which the lubricating oil from the secondary side first decompression pipeline port 73 flows. ing. Similarly to the first drain 78, the second drain 82 is provided coaxially with the axis of the second passage 80, and has an opening 82a through which lubricating oil from the secondary side second decompression conduit port 74 flows. ing.
As shown in FIGS. 14 to 17, the first open / close valve 79 includes a ball member 92 for closing the opening 78a of the first drain 78 or the small diameter portion 76a inside the primary discharge port 71 (71b), It comprises a coil spring 93 for urging the ball member 92 toward the small diameter portion 76a. Similarly to the first opening / closing valve 79, the second opening / closing valve 83 includes a ball member 95 for closing the opening 82a of the second drain 82 or the small diameter portion 80a inside the primary discharge port 71 (71c); The ball member 95 includes a coil spring 96 for urging the ball member 95 toward the small diameter portion 80a.

As shown in FIG. 15, when the first solenoid valve 77 opens the first passage 76, the first opening / closing valve 79 causes the ball member 92 of the coil spring 93 to be lubricated by the lubricating oil from the primary discharge port 71 (71 b). The first drain 78 moves to the opening 78a side against the urging force and closes the opening 78a. The primary discharge port 71 (71b), the secondary first decompression line port 73, and the primary opening port 72 are closed. (72b) is cut off.
Similarly to the first opening / closing valve 79, when the second passage 80 is opened by the second solenoid valve 81, the second opening / closing valve 83 causes the ball member 95 to be coil springed by the lubricating oil from the primary discharge port 71 (71c). 96 moves against the opening 82a side of the second drain 82 against the urging force of 96, and closes the opening 82a, and opens the primary side discharge port 71 (71c) and the secondary side second decompression pipe port 74 to the primary side. The port 72 (72c) is blocked.

  The controller 100 operates the pump 10, the stop mode Mr for turning off the first solenoid valve 77, the second solenoid valve 81 and the third solenoid valve 85, and the second and third solenoid valves 81 and 85. When the third passages 80 and 84 are closed, the pump 10 is turned on and off and the first solenoid valve 77 is turned on and off in synchronism with each other to supply lubricating oil to the first pressure-reducing conduit Pt1. When the pressure line supply mode Mt1, the first and third passages 76 and 84 are closed by the first and third solenoid valves 77 and 85, the pump 10 is turned on and off, and the second solenoid valve 81 is turned on and off. In synchronism with each other, the second depressurization line supply mode Mt2 for supplying lubricating oil to the second depressurization line Pt2, and the first and second solenoid valves 77, 81 In addition, the third solenoid valve 85 is turned on and off in synchronization with the operation of the pump 10 in the closed state of the second solenoids 77a and 81a and the lubricant is supplied to the non-depressurization line Ps. A function for setting to any one of four modes including the road supply mode Ms is provided.

Specifically, as shown in FIG. 18, the controller 100 turns on and off the pump 10, turns on and off the first solenoid 77a, turns on and off the second solenoid 81a, and turns on and off the third solenoid 85a. And is done in synchronization. That is, in the stop mode Mr, the controller 100 turns off the first, second and third solenoids 77a, 81a, 85a and makes the first, second and third passages 76, 80, 84 with the balls 86, 88, 90. Is closed, the pump 10 is turned off, and in the first depressurization conduit supply mode Mt1, the first solenoid 77a is turned on, the second and third solenoids 81a and 85a are turned off, and only the first passage 76 is opened. The pump 10 is turned on, and in the second decompression line supply mode Mt2, the second solenoid 81a is turned on, the first and third solenoids 77a and 85a are turned off, only the second passage 80 is opened, and the pump 10 is turned on. In the non-decompression pipe supply mode Ms, the third solenoid 85a is turned on and the first and second solenoids 77a and 81a are turned off to turn the third passage 8 To turn on the pump 10 and the only in the open.
The function of the controller 100 is realized by functions such as a timer and a microcomputer that can be set in time, as in the case of the lubricating oil supply device S1 according to the first embodiment. The setting can be changed appropriately according to the above.

  Accordingly, when the lubricating oil supply device S2 according to the second embodiment is used in the lubrication system according to this embodiment, as shown in FIG. The first decompression line Pt1 is connected to the secondary side second decompression line port 74, the second decompression line Pt2 is connected to the secondary side non-decompression line port 75, and the non-decompression line Ps is connected to the secondary side non-decompression line port 75. .

  Next, when the lubrication system according to this embodiment is lubricated by the lubricating oil supply device S2 according to the second embodiment, the following is performed. Here, as shown in FIG. 18, the lubricating oil supply device S2 is controlled by the controller 100 in the first depressurization pipe supply mode Mt1, the stop mode Mr, the second depressurization pipe supply mode Mt2, the stop mode Mr, and the non-depressurization pipe. A case will be described in which the path supply mode Ms, the stop mode Mr, the second decompression pipe supply mode Mt2, and the stop mode Mr are operated as one cycle.

  First, when the controller 100 sets the first decompression line supply mode Mt1 from the stop mode Mr and operates the lubricating oil supply device S2, as shown in FIG. 15 and FIG. The solenoid 77a is turned on and the second and third solenoids 81a and 85a are turned off in synchronization. Accordingly, as shown in FIG. 15, in the switching valve 70, since the first solenoid valve 77 is energized, the ball 86 is pulled by the first solenoid 77a and the primary discharge port 71 is opened. The first passage 76 is opened. Therefore, the lubricating oil from the primary discharge central port 71a passes through the primary discharge port 71 (71b), pushes the ball member 92 of the first on-off valve 79, and closes the opening of the first drain 78 by this ball member 92. Then, the first drain 78 is closed, and the first drain 78 is supplied to the first decompression conduit Pt1 through the first passage 76 and the secondary first decompression conduit port 73. At this time, the lubricating oil is supplied from the single fixed valve Vt (Vt1) provided in the first depressurization pipe line Pt1 to each portion where the amount of oil supply may be relatively small.

  As shown in FIG. 18, after a predetermined time, the controller 100 changes from the first depressurization conduit supply mode Mt1 to the stop mode Mr, and the operation of the pump 10 and the first solenoid 77a are turned off in synchronization. . Accordingly, as shown in FIG. 14, in the switching valve 70, the supply of lubricating oil from the pump 10 is stopped and the first solenoid valve 77 is turned off so that the ball 86 is moved to the primary side by the coil spring 87. The discharge port 71 (71b) is returned to the closed position. At this time, the ball member 92 is returned to the small diameter portion 76 a side by the coil spring 93, the first drain 78 is opened, and the primary side open port 72 and the secondary side first decompression line port 73 are connected. Therefore, the hydraulic pressure of the first depressurization pipe line Pt1 is released to the lubricating oil reservoir 20 side, and the first depressurization pipe line Pt1 is depressurized. Further, at this time, since the ball member 92 of the first opening / closing valve 79 closes the small diameter portion 76a, it is possible to prevent a situation where the hydraulic pressure in the first depressurization conduit Pt1 is released to the primary discharge port 71 side.

Next, as shown in FIG. 18, since the controller 100 is in the stop mode Mr, the operation of the pump 10 is turned off and the first, second and third solenoids 77a, 81a, 85a are turned off in synchronism. Lubricating oil is not supplied from the supply device S2, and the single metering valve Vt and the progressive metering valve Vs do not operate.
In this state, when a predetermined time has elapsed, the controller 100 sets the second depressurization line supply mode Mt2 from the stop mode Mr to operate the lubricating oil supply device S2, and the pump 10 is turned on as shown in FIG. The second solenoid 81a is turned on and the first and third solenoids 77a and 85a are turned off in synchronization. Accordingly, as shown in FIG. 16, in the switching valve 70, the second solenoid valve 81 is energized, so that the ball 88 is pulled by the second solenoid 81a and the primary discharge port 71 (71c) is opened. And the second passage 80 is opened. Therefore, the lubricating oil from the primary discharge central port 71a passes through the primary discharge port 71 (71c), pushes the ball member 95 of the second on-off valve 83, and closes the opening of the second drain 82 by this ball member 95. Then, the second drain 82 is closed, and the second drain 82 is supplied to the second decompression conduit Pt2 through the second passage 80 and the secondary second decompression conduit port 74. At this time, the oil is supplied from the single metering valve Vt (Vt2) provided in the second depressurization pipe line Pt2 to each portion that requires a relatively small amount of oil supply.

  As shown in FIG. 18, after a predetermined time, the controller 100 changes from the second depressurization line supply mode Mt2 to the stop mode Mr, and the operation of the pump 10 and the second solenoid 81a are turned off in synchronization. . Accordingly, as shown in FIG. 14, in the switching valve 70, the supply of the lubricating oil from the pump 10 is stopped and the second solenoid valve 81 is turned off so that the ball 88 is moved to the primary side by the coil spring 89. The discharge port 71 (71c) is returned to the closed position. At this time, the ball member 95 is returned to the small diameter portion 80a side by the coil spring 96, the second drain 82 is opened, and the primary side open port 72 and the secondary side second pressure relief line port 74 are connected. As a result, the hydraulic pressure in the second depressurization conduit Pt2 is released to the lubricating oil reservoir 20 and the second depressurization conduit Pt2 is depressurized. Further, at this time, since the ball member 95 of the second opening / closing valve 83 closes the small diameter portion 80a, the hydraulic pressure of the second depressurization conduit Pt2 is prevented from being released to the primary discharge port 71 side.

Next, when a predetermined time elapses in the stop mode Mr of the controller 100 as described above, the controller 100 sets the stop mode Mr to the non-depressurization conduit supply mode Ms and operates the lubricating oil supply device S2, as shown in FIG. As shown, the pump 10 is turned on, the third solenoid 85a is turned on, and the first and second solenoids 77a and 81a are turned off in synchronization. Accordingly, as shown in FIG. 17, in the switching valve 70, since the third solenoid valve 85 is energized, the ball 90 is pulled by the third solenoid 85a and the primary discharge port 71 (71d) is opened. Thus, the third passage 84 is opened. Therefore, the lubricating oil from the primary discharge central port 71a passes through the primary discharge port 71 (71d), passes through the third passage 84 and the secondary non-decompression conduit port 75, and is supplied to the non-decompression conduit Ps. Is done. At this time, the fuel is supplied from the progressive metering valve Vs provided in the non-depressurization pipeline Ps to each part that requires a relatively large amount of oil supply.
Then, as shown in FIG. 18, after a predetermined time, the controller 100 changes from the non-depressurization conduit supply mode Ms to the stop mode Mr, and the pump 10 is turned off and the third solenoid 85a is turned off in synchronization. Accordingly, as shown in FIG. 14, in the switching valve 70, the supply of the lubricating oil from the pump 10 is stopped and the third solenoid valve 85 is turned off so that the ball 90 is moved to the primary side by the coil spring 91. The discharge port 71 (71d) is returned to the closed position.
Next, after a predetermined time has elapsed in this state, the controller 100 enters the second depressurization pipe supply mode Mt2, the lubricant is supplied to the second depressurization pipe Pt2 in the same manner as described above, and then the controller 100 enters the stop mode. It becomes Mr and the 2nd decompression pipe line Pt2 is decompressed.

  Such a cycle is repeated to make the lubrication system function in the same manner as described above. The operation and effect are the same as in the first embodiment.

  FIG. 19 shows a lubrication system according to another embodiment of the present invention. This differs from the above in that a single pump 10 for feeding lubricating oil and a switching valve 30 are provided separately. In this lubrication system, the same lubrication as described above can be performed by operating the pump 10 and controlling the switching valve 30.

FIG. 20 shows a lubrication system according to still another embodiment of the present invention. This is different from the lubrication system of the above-described embodiment in that the three systems of depressurization pipes including the first, second and third depressurization pipes Pt1, Pt2 and Pt3, and the first and second non-depressurization pipes Ps1. (Ps), consisting of 5 lines composed of 2 non-depressurized lines composed of Ps2.
The lubricating oil supply device S3 capable of supplying lubricating oil to each pipeline of the lubricating system according to this embodiment improves, for example, the switching valve 70 of the lubricating oil supply device S2 according to the second embodiment. 70a is used.
Specifically, in this lubricating oil supply device S3, in addition to the configuration of the lubricating oil supply device S2 according to the second embodiment, the switching valve 70a is connected to the third decompression pipe line Pt3 on the secondary side third side. It has a secondary side second non-decompression line port 111 connected to the decompression line port 110 and the second non-decompression line Ps2, and includes a primary side discharge port 71 and a secondary side third decompression line port 110. A fourth passage 112 that communicates, a fourth solenoid valve 113 that opens and closes the fourth passage 112 by energization / non-energization, a third drain 114 that communicates with the fourth passage 112 and the primary side open port 72, and a fourth solenoid A third on-off valve 115 that closes the third drain 114 when the valve 113 is opened and opens the third drain 114 when the fourth solenoid valve 113 is closed; a primary-side discharge port 71; and a secondary-side second non-depressurization conduit Port 111 And a fifth solenoid valve 117 for opening and closing the fifth passage 116 by energization / non-energization, and the controller 100 is connected to the first, second, third, fourth and fifth solenoid valves. 77, 81, 113, 85, 117 are driven individually. The secondary non-decompression conduit port 75 is connected to the first non-decompression conduit Ps1 (Ps).

In addition to the same operation and effect as the lubricating oil supply device according to the above-described embodiment, the lubricating oil supply device S3 can further set an intermittent time for each pipe line and reduce the loss of the lubricating oil. In addition, the lubricating oil can be fed to five pipes with one pump.
Even if the number of decompression lines or non-decompression lines is further increased, the number of solenoid valves and the like of the switching valve may be increased according to the increase, and is not limited to this number.

In the above embodiment, the lubrication system and the lubricating oil supply device have been described as applied to a resin or metal injection molding machine. However, the present invention is not necessarily limited to this, and is applicable to any device. It can be changed as appropriate.
In the embodiment, the case where grease is used as the lubricating oil in the lubricating system and the lubricating oil supply device has been described. However, the present invention is not necessarily limited to this, and may be applied to the case of oil. is there.
Furthermore, when the pressures of the decompression pipeline and the non-decompression pipeline are different, a relief valve is provided for each pipeline, or a relief valve that is switched according to the switching of the switching valve is built in the pump. Just do it.

1 is a diagram showing a lubrication system according to an embodiment of the present invention and a lubricating oil supply device according to a first embodiment used in the lubrication system. It is side surface sectional drawing which shows the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. It is a front view which shows the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. It is a bottom view which shows the pump of the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. It is a top view which shows the switching valve of the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. It is a front view which shows the switching valve of the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. It is a bottom view which shows the switching valve of the lubricating oil supply apparatus which concerns on the 1st Embodiment of this invention. In the stop mode and non-depressurization line supply mode of the lubricating oil supply device concerning a 1st embodiment of the present invention, it is a figure showing (a) front section of a change valve, and (b) plane section of a change valve, respectively. . FIG. 3 is a diagram showing (a) a front sectional view of a switching valve and (b) a planar sectional view of the switching valve in the first depressurization pipeline supply mode of the lubricating oil supply apparatus according to the first embodiment of the present invention. In the 2nd decompression pipe supply mode of the lubricating oil supply apparatus concerning a 1st embodiment of the present invention, it is a figure showing (a) front section of a switching valve, and (b) plane section of a switching valve, respectively. It is a timing chart which shows an example of the operation | movement flow of the switching valve of a lubrication system concerning an embodiment of the invention, a pump, a single metering valve, and a progressive metering valve. It is a figure which shows the lubricating system which concerns on embodiment of this invention, and the lubricating oil supply apparatus which concerns on 2nd Embodiment used for this lubricating system. It is a front view which shows the lubricating oil supply apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the side surface cross section of a switching valve in the stop mode of the lubricating oil supply apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the side surface cross section of a switching valve in the 1st decompression line supply mode of the lubricating oil supply apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the side surface cross section of a switching valve in the 2nd decompression line supply mode of the lubricating oil supply apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the side surface cross section of a switching valve in the non-decompression pipe | tube supply mode of the lubricating oil supply apparatus which concerns on the 2nd Embodiment of this invention. It is a timing chart which shows an example of the operation | movement flow of the switching valve of a lubrication system concerning an embodiment of the invention, a pump, a single metering valve, and a progressive metering valve. It is a figure which shows the lubrication system which concerns on another embodiment of this invention. It is a figure which shows the lubricating system which concerns on 3rd Embodiment used for the lubricating system which concerns on another embodiment of this invention, and this lubricating system. It is sectional drawing which shows the lubricating oil supply apparatus which concerns on the 3rd Embodiment of this invention. It is a figure which shows an example of the conventional lubrication system and lubricating oil supply apparatus.

Explanation of symbols

S1, S2, S3 Lubricating oil supply devices Vt, Vt1, Vt2 Single metering valve Vs Progressive metering valve Pt Depressurization conduit Pt1 First decompression conduit Pt2 Second decompression conduit Pt3 Third decompression conduit Ps Non-decompression conduit Ps Ps1 First non-decompression line Ps2 Second non-decompression line A First depressurization line supply position B Second depressurization line supply position C Non-decompression line supply position Mr Stop mode Mt1 First depressurization line supply mode Mt2 2 Depressurization pipeline supply mode Ms Non-decompression pipeline supply mode 10 Pump 11 Piston 12 Cylinder 13 Drive motor 14 Cam mechanism 15 Mounting portion 16 Discharge port 17 Return port 20 Lubricating oil reservoir 21 Cartridge 22 Cartridge mounting portion 23 Cover 24 Female screw 30, 70, 70a Switching valve 31, 71 Primary side discharge port 31a, 71a Primary side discharge aggregation port 32, 72 Primary side open port 32 a, 72a Primary-side open aggregate ports 33, 73 Secondary-side first decompression pipeline ports 34, 74 Secondary-side second decompression pipeline ports 35, 75 Secondary-side non-decompression pipeline ports 37 Switching passage 38 Empty port 40 Spool 41 First groove 42 Second groove 43 Third groove 45 Coil spring 50 Magnetic field generation mechanism 50a First solenoid 50b Second solenoid 51 Pressing portion 55 Mounted portion 56 Mounting holes 60, 100, 100a Controller 76 First passage 76a, 80a small diameter portion 76b, 80b large diameter portion 77 first solenoid valve 77a first solenoid 78 first drain 79 first open / close valve 80 second passage 81 second solenoid valve 81a second solenoid 82 second drain 83 second open / close valve 84 Third passage 85 Third solenoid valve 85a Third solenoid 86, 88, 90 Ball 87, 89 , 91 Coil springs 92, 95 Ball members 93, 96 Coil springs 110 Secondary side third decompression conduit port 111 Secondary side second non-decompression conduit port 112 Fourth passage 113 Fourth solenoid valve 114 Third drain 115 First 3 Open / close valve 116 Fifth passage 117 Fifth solenoid valve

Claims (13)

A depressurization pipe that is supplied with lubricating oil and requires depressurization, and a non-depressurization pipe that is fed with lubricating oil and does not require depressurization, and is provided with at least one of the depressurizing pipe and the non-depressurizing pipe In a lubrication system having two or more systems,
A plurality of pipelines are provided in parallel, one pump for supplying lubricating oil to the pipelines of the plurality of pipelines, and one of the pipelines of the plurality of pipelines connected to the pump and switched. A lubrication system comprising: a switching valve that enables feeding of lubricating oil from the pump. Two lines of depressurization pipes consisting of a first depressurization pipe and a second depressurization pipe that are supplied with lubricating oil and need to be depressurized, and one system of non-depressurization pipes that are fed with lubricating oil and do not require depressurization In a lubrication system having three lines of
One pump for providing the first decompression conduit, the second decompression conduit, and the non-decompression conduit in parallel, and supplying lubricating oil to the first decompression conduit, the second decompression conduit, and the non-decompression conduit And the lubricating oil from the pump is supplied to any one of the three systems consisting of the first decompression conduit, the second decompression conduit and the non-decompression conduit connected to the pump. A lubrication system comprising a switching valve that enables the switching system. A first pressure relief line and a second pressure relief pipe that are supplied with lubricating oil and actuated by pressurization and depressurization of the lubricating oil to discharge the lubricating oil and need to be depressurized for the operation of the valve. There are two systems of depressurization pipes composed of depressurization pipes, and a valve that feeds the lubricating oil and discharges the lubricating oil by pressurizing the lubricating oil, and does not require depressurization for the operation of the valve. In a lubrication system having three lines with one non-depressurization line,
Lubrication stored in a lubricating oil reservoir in the first depressurization line, the second depressurization line, and the non-decompression line is provided in parallel with the first depressurization line, the second depressurization line, and the non-decompression line. One pump for supplying oil, and one of the three systems of pipes connected to and switched from the pump and comprising the first decompression pipeline, the second decompression pipeline, and the non-decompression pipeline Lubricating oil from the pump can be fed to the passage, and at least the first decompression conduit and the second decompression conduit can be decompressed when not connected to the first decompression conduit and the second decompression conduit. And a switching valve. The switching valve
A primary-side discharge port connected to the discharge port of the pump; a primary-side open port that opens to the lubricating oil reservoir; a secondary-side first pressure-reduction pipe port connected to the first pressure-release pipe; A secondary side second decompression line port connected to the 2 decompression line and a secondary side non-decompression line port connected to the non-decompression line,
The primary side discharge port and the secondary side first decompression line port are connected, and the primary side open port, secondary side second decompression line port, and secondary non-depressure line port are connected to the primary side discharge. A first depressurization line supply position that is blocked from the port and the secondary side first depressurization line port, the primary side discharge port and the secondary side second depressurization line port are connected and the primary side open port, A second decompression line supply position for blocking the primary first decompression duct port and the secondary non-decompression duct port from the primary discharge port and the secondary second decompression duct port; the primary discharge port; Non-decompression line supply position for connecting the secondary-side non-decompression line port and connecting the secondary-side first de-pressure line port and the secondary-side second de-pressure line port to the primary-side open port Spool that can move to 3 positions ,
And a magnetic field generating mechanism for moving the spool to any one of the first depressurization line supply position, the second depressurization line supply position, and the non-decompression line supply position. The lubrication system according to claim 3.   A stop mode for stopping the pump, and a first pressure-reducing pipe for positioning the spool at a first pressure-reducing pipe supply position by the magnetic field generating mechanism and operating the pump to supply lubricating oil to the first pressure-reducing pipe. A path supply mode; a second pressure release line supply mode in which the spool is positioned at a second pressure release line supply position by the magnetic field generation mechanism and the pump is operated to supply lubricating oil to the second pressure release line; The spool is positioned at a non-decompression line position by the magnetic field generation mechanism, and the pump is operated to supply lubricating oil to the non-decompression line and one of four modes: a non-decompression line supply mode The lubrication system according to claim 4, further comprising a controller for setting. The switching valve
A primary-side discharge port connected to the discharge port of the pump; a primary-side open port that opens to the lubricating oil reservoir; a secondary-side first pressure-reduction pipe port connected to the first pressure-release pipe; A secondary side second decompression line port connected to the 2 decompression line and a secondary side non-decompression line port connected to the non-decompression line,
A first passage communicating with the primary-side discharge port and the secondary-side first decompression pipe port; a first solenoid valve that opens and closes the first passage by energization / non-energization; the first passage and the primary A first drain that communicates with a side opening port; a first on-off valve that closes the first drain when the first solenoid valve is opened and opens the first drain when the first solenoid valve is closed; and the primary side A second passage communicating with the discharge port and the secondary side second decompression pipe port; a second solenoid valve for opening and closing the second passage by energization / non-energization; the second passage and the primary side opening port A second drain that communicates with the second solenoid valve, a second on-off valve that closes the second drain when the second solenoid valve is opened and opens the second drain when the second solenoid valve is closed, and the primary discharge port And above secondary A third passage communicating with the non-decompression conduit port; and a third solenoid valve that opens and closes the third passage by energization / non-energization. The first, second, and third solenoid valves are individually provided. The lubrication system according to claim 3, further comprising a controller for driving the motor. The above controller
Operation of the pump, stop mode in which the first solenoid valve, the second solenoid valve, and the third solenoid valve are turned off, and the second and third passages closed by the second and third solenoid valves The first depressurization line supply mode for supplying lubricating oil to the first depressurization line by synchronously turning on and off the operation of the pump and on and off of the first solenoid valve, and the first When the first and third passages are closed by the third solenoid valve, the pump is turned on and off in synchronization with the second solenoid valve on and off to lubricate the second pressure relief line. A second depressurization line supply mode for supplying oil, and the third solenoid valve is turned on when the first and second solenoid valves are closed by the first and second solenoid valves; And a function for setting the operation of the pump to be in any one of four modes including a non-decompression pipe supply mode for supplying lubricating oil to the non-depressurization pipe. The lubrication system according to claim 6.   A valve piped to the first and second depressurization pipes is reciprocated by pressurization and depressurization of the lubricating oil to discharge the lubricating oil and 1 corresponding to the piston. A single metering valve having one discharge port, on the other hand, a valve piped to the non-depressurization pipe is a plurality of pistons that are reciprocated in sequence by the pressurization of the lubricant and discharges the lubricant. 8. A lubrication system according to claim 2, wherein the lubrication system comprises a progressive metering valve having a plurality of pairs of discharge ports corresponding to the pistons. A valve that discharges the lubricating oil is supplied by supplying the lubricating oil and is operated by pressurizing and depressurizing the lubricating oil, and a depressurizing pipeline and a lubricating oil that need to be depressurized to operate the valve are supplied. A valve that is supplied and discharges the lubricating oil by pressurizing the lubricating oil, and includes a non-depressurizing conduit that does not require depressurization for the operation of the valve. In the lubricating oil supply device capable of feeding the lubricating oil to each of a plurality of pipelines in which one of the pipelines is two or more,
A plurality of pipelines are provided in parallel, and one pump that feeds lubricating oil to the pipelines of the plurality of pipelines, and a single pump that is integrally attached to the pump and connected and switched, A lubricating oil supply apparatus comprising: a switching valve that enables the lubricating oil from the pump to be fed to any one of the systems. A first pressure relief line and a second pressure relief pipe that are supplied with lubricating oil and actuated by pressurizing and depressurizing the lubricating oil to discharge the lubricating oil and need to be depressurized for the operation of the valve. There are two systems of depressurization pipes composed of depressurization pipes, and a valve that feeds the lubricating oil and discharges the lubricating oil by pressurizing the lubricating oil, and does not require depressurization for the operation of the valve. In a lubricating oil supply device capable of feeding lubricating oil to three systems of pipelines with one system of non-decompression pipelines,
One pump that feeds the lubricating oil stored in the lubricating oil reservoir to the first depressurizing line, the second depressurizing line, and the non-depressurizing line, and the pump is integrally attached to the pump and connected and switched. Lubricating oil from the pump can be supplied to any one of the three systems consisting of the first decompression conduit, the second decompression conduit, and the non-decompression conduit, and the first decompression conduit And a switching valve that enables the first depressurization line to be depressurized when not connected to the second pressure release line and that allows the second depressurization line to be depressurized when not connected to the second depressurization line. Lubricating oil supply device. The switching valve
A primary-side discharge port connected to the discharge port of the pump; a primary-side open port that opens to the lubricating oil reservoir; a secondary-side first pressure-reduction pipe port connected to the first pressure-release pipe; A secondary side second decompression line port connected to the 2 decompression line and a secondary side non-decompression line port connected to the non-decompression line, and
The primary side discharge port and the secondary side first decompression line port are connected, and the primary side open port, secondary side second decompression line port, and secondary non-depressure line port are connected to the primary side discharge. A first depressurization line supply position that is blocked from the port and the secondary side first depressurization line port, the primary side discharge port and the secondary side second depressurization line port are connected and the primary side open port, A second decompression line supply position for blocking the primary first decompression duct port and the secondary non-decompression duct port from the primary discharge port and the secondary second decompression duct port; the primary discharge port; Non-decompression line supply position for connecting the secondary-side non-decompression line port and connecting the secondary-side first de-pressure line port and the secondary-side second de-pressure line port to the primary-side open port Spool that can move to 3 positions ,
And a magnetic field generating mechanism for moving the spool to any one of the first depressurization line supply position, the second depressurization line supply position, and the non-decompression line supply position. The lubricating oil supply device according to claim 10. The switching valve
A primary-side discharge port connected to the discharge port of the pump; a primary-side open port that opens to the lubricating oil reservoir; a secondary-side first pressure-reduction pipe port connected to the first pressure-release pipe; A secondary side second decompression line port connected to the 2 decompression line and a secondary side non-decompression line port connected to the non-decompression line,
A first passage communicating with the primary-side discharge port and the secondary-side first decompression pipe port; a first solenoid valve that opens and closes the first passage by energization / non-energization; the first passage and the primary A first drain that communicates with a side opening port; a first on-off valve that closes the first drain when the first solenoid valve is opened and opens the first drain when the first solenoid valve is closed; and the primary side A second passage communicating with the discharge port and the secondary side second decompression pipe port; a second solenoid valve for opening and closing the second passage by energization / non-energization; the second passage and the primary side opening port A second drain that communicates with the second solenoid valve, a second on-off valve that closes the second drain when the second solenoid valve is opened and opens the second drain when the second solenoid valve is closed, and the primary discharge port And above secondary A third passage communicating with the non-decompression pipe port and a third solenoid valve for opening and closing the third passage by energization / non-energization are provided, and the first, second and third solenoid valves are individually provided. 11. The lubricating oil supply apparatus according to claim 10, further comprising a controller for driving.   13. The lubricating oil supply device according to claim 9, wherein the switching valve is detachable from the pump.

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