TW202006286A - Lubricating pump device - Google Patents

Abstract

This lubricating pump device is used to deliver lubricating oil to a valve piping path R in which a valve (Vt) actuated by pressurizing and depressurizing the lubricating oil is provided and which discharges the lubricating oil. The lubricating pump device is provided with: a pump (2); a supply pipe path (5) for supplying the lubricating oil from the pump (2) to a delivery opening (4); a depressurizing pipe path (6) for depressurizing the inside of the valve piping path R through the supply pipe path (5); a switching valve (20) for opening or closing the depressurizing pipe path (6) by means of forward and backward movement of a spool (21); an electromagnetic actuator (30) for moving the spool (21) of the switching valve (20) forward and backward so as to open the depressurizing pipe path (6) when de-energized and to close the depressurizing pipe path (6) when energized; and a lever mechanism (40) for increasing the force of forward and backward movement of the rod (31) of the electromagnetic actuator (30) and converting the movement into forward and backward movement of the spool (21) of the switching valve (20).

Description

Lubrication pump device

The present invention relates to a lubricating pump device for feeding lubricating oil such as grease or oil, and particularly to a lubricating pump device for feeding lubricating oil to a valve that ejects lubricating oil by the action of pressurization and decompression of lubricating oil.

Previously, as shown in FIG. 6(a), a lubricating pump device Ja that feeds a lubricating oil such as grease or oil as a fluid is a grease lubricating system S used in machinery such as injection molding machines for resins or metals By. In this lubrication system S, the lubricating oil is supplied from the lubrication pump device Ja via the valve piping path R to a well-known single quantitative valve Vt disposed at a plurality of locations. Each single quantitative valve Vt has a single piston (not shown) that reciprocates and sprays lubricating oil by the pressurization and decompression of lubricating oil, and one ejection port corresponding to the piston, and the amount of ejection per time is 0.03 About mL～1.5 mL (0.03cc～1.5 cc). The lubricating pump device Ja has a function of decompressing by actuating a single metering valve V by pressurizing and decompressing lubricating oil to eject lubricating oil.

The lubricating pump device Ja includes: a cassette-type lubricating oil storage unit 100 that stores lubricating oil; a pump 102 that is driven by an electric motor 101 and sucks and ejects lubricating oil from the lubricating oil storage unit 100; a supply pipe 105 that has Connected to the supply port 104 of the valve piping path R, and supplies the lubricating oil discharged from the pump 102 through the check valve 103; and a decompression pipe 106, which is provided between the supply pipe 105 and the grease storage unit 100, and is supplied by The pipe 105 decompresses the valve piping path R. A solenoid valve 110 is provided in the decompression pipeline 106. The solenoid valve 110 includes: a switching valve 111 that opens or closes the decompression pipe 106 by the forward and backward movement of a reel (not shown); and an electromagnetic actuator 113 that is caused by the force of the coil spring 112 when not energized The reel is located at a normal position to open the decompression pipe 106, and when energized, the reel is moved directly to close the decompression pipe 106. In FIG. 6(a), symbol 114 represents an exhaust valve for removing air from the supply pipe 105, and symbol 115 represents a vacuum used to return the lubricant to the lubricant storage unit 100 when the supply pipe 105 becomes higher than a certain pressure The release valve (for example, refer to Japanese Patent Laid-Open No. 2002-323196 and Japanese Patent Laid-Open No. 2016-84873).

Fig. 6(b) shows the control circuit of the lubricating oil device Ja. In the control circuit, for example, the timer 120 counts and the switch 121 is turned on and off, and the electromagnetic actuator 113 of the electric motor 101 and the vacuum release valve 110 is intermittently energized from the power source 122. After energization, the decompression pipe 106 is closed by the vacuum release valve 110, and the lubricating oil is ejected from the pump 102 to the supply pipe 105, and the lubricating oil is supplied to the valve Vt through the valve piping path R. On the other hand, when not energized, the supply of lubricating oil from the pump 102 is stopped, and the decompression pipe 106 is opened by the vacuum release valve 110 to restore the piston of the valve Vt to the original position for the next use.

In addition, a manual push button switch 123 is provided in the control circuit, which can forcibly energize the electric motor 101 and the electromagnetic actuator 113 of the vacuum release valve 110 to supply lubricating oil to the valve Vt through the valve piping path R. By this, for example, when piping Vt and supplying lubricating oil initially, or during maintenance, if the air remaining in the valve Vt or the valve piping path R is to be discharged as soon as possible to fill the piping with lubricating oil, When the button switch 123 is repeatedly pressed, lubricating oil is frequently supplied from the pump 102 and exhausted. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2002-323196 [Patent Document 2] Japanese Patent Laid-Open No. 2016-84873

[Problems to be solved by the invention]

In the above-mentioned previous lubrication pump device Ja, the electromagnetic actuator 113 of the electric motor 101 and the vacuum release valve 110 can be forcibly energized by a manual push button switch 123 to frequently supply lubricating oil to the valve piping path R to The valve Vt is exhausted. However, if the time during which the electromagnetic actuator 113 is frequently energized is extended, the electromagnetic actuator 113 generates heat, which may easily exceed the allowable range of heat generation. To solve this problem, it is considered to expand the resistance value of the coil of the electromagnetic actuator 113, but as a result, the force of the attraction rod of the electromagnetic actuator 113 is reduced, which hinders the operation of the reel of the switching valve.

The present invention has been completed in view of this problem, and its purpose is to provide a lubricating pump device that does not hinder the operation of the reel of the switching valve. Even if the time for frequently energizing the electromagnetic actuator is extended, the electromagnetic The heat generation of the actuator is suppressed within the allowable range. [Technical means to solve the problem]

In order to solve this problem, the lubricating pump device of the present invention is used to feed lubricating oil from a self-feeding port to a valve piping path provided with a valve that operates by pressurizing and decompressing lubricating oil and ejects the lubricating oil, And it is configured to include: a lubricating oil storage part which stores lubricating oil; a pump which sucks lubricating oil from the lubricating oil storage part and ejects it; a supply pipe which supplies the lubricating oil ejected from the pump to the feed through the check valve Port; a decompression pipeline, which is provided between the supply pipeline and the lubricating oil storage portion, and decompresses the valve piping path through the supply pipeline; a switching valve, which has a reel that can move forward and backward, and by the reel The forward and backward movements open or close the decompression pipe; the electromagnetic actuator has a rod capable of forward and backward movement, which opens the decompression pipe when it is not energized and closes the decompression pipe when it is energized. The reel moves forward and backward; a lever mechanism that increases the force of the rod of the electromagnetic actuator to convert its forward and backward motion into the forward and backward motion of the reel of the switching valve.

Thereby, when the rod of the electromagnetic actuator is moved forward and backward, the reel is moved forward and backward via the lever mechanism. In this case, since the lever mechanism increases the advancement and retraction power of the lever and converts it into the advancement and retreat of the reel, the force acting on the reel can be increased. As a result, even if the force for advancing and retreating the rod is lower than before, the hindrance to the movement of the reel can be suppressed. Next, when the pump is actuated and the spool of the switching valve is moved by the electromagnetic actuator to close the decompression pipe, the lubricant is ejected from the pump to the supply pipe, and the lubricant is supplied to the valve through the valve piping path. On the other hand, after supplying lubricating oil to the valve, when the pump is stopped and the spool of the switching valve is moved by the electromagnetic actuator and the decompression pipe is opened, the valve piping path is decompressed, so the valve is restored to its original position for preparation Second use.

Also, for example, when piping the valve and initially supplying lubricating oil, or maintenance, etc., the air stays in the valve or the valve piping path, and if it is to be discharged as soon as possible to fill the pipeline with lubricating oil, Frequently repeating the energization and non-energization of the electromagnetic actuator to operate the reel, and repeatedly supplying lubricating oil from the pump to exhaust. In this case, when the rod of the electric actuator moves forward and backward, the reel moves forward and backward via the lever mechanism. The lever mechanism increases the forward and backward power of the rod and converts it into the forward and backward motion of the reel. Even if the force for advancing and retreating the rod is lower than before, the force for advancing and retreating the reel can be increased, so that the obstruction of the reel can be suppressed. Therefore, the resistance of the coil of the electromagnetic actuator can be increased, and even if the current is frequently energized, it is not easy to generate heat. As a result, even if the time for frequently energizing the electromagnetic actuator is extended, it will not hinder the operation of the reel, and the heat generation of the electromagnetic actuator can be suppressed within the allowable range.

And, if necessary, the above-mentioned lever mechanism is composed of a connecting rod that supports the midpoint of the long side in the longitudinal direction of the fulcrum shaft that constitutes the fulcrum, and can be rocked and supported around the fulcrum shaft as a center, and one end of the connecting rod is provided with The force point at the front end of the rod of the electromagnetic actuator constitutes a force point to be axially connected, so that the other end of the connecting rod is axially connected to the action point at the front end of the reel of the switching valve that constitutes the action point, And the relationship between the distance a between the fulcrum and the force point and the distance b between the fulcrum and the action point is set to 1.8≦(a/b). If (a/b) exceeds 1, there is a corresponding effect, and if (a/b) is 1.8 or more, the effect can be surely obtained. If the upper limit is set, it is 1.8≦(a/b)≦4. If (a/b) exceeds 4, the connecting rod becomes longer and the device becomes larger. The expectation is 2.0≦(a/b)≦3.

Thereby, when the rod of the electromagnetic actuator moves forward and backward, the connecting rod of the lever mechanism swings about the fulcrum to move the reel forward and backward. Since the relationship between the distance a between the fulcrum and the force point and the distance b between the fulcrum and the action point is set to 1.8≦(a/b), the forward and backward power of the rod can be reliably increased and converted into the forward and backward motion of the reel.

And, if necessary, at one end of the connecting rod, a groove is cut from the end surface of the one end along the longitudinal direction of the connecting rod to form an engaging groove that can move relative to the force point axis and engage, At the other end of the connecting rod, a groove is formed along the longitudinal direction of the connecting rod from the end face of the other end to form another engaging groove that can move relative to the axis of the action point and engage. In this way, since the engaging groove of one end of the connecting rod can be easily connected to the shaft of the force point of the rod, and the other engaging groove of the other end of the connecting rod can be used only Inserted into the axis of the point of action of the reel and easily pivoted, it can be easily assembled.

In addition, if necessary, the switching valve is constituted by an on-off valve, which is interposed in the decompression pipe, and opens the decompression pipe when the reel enters or exits or retreats, and retreats when the reel enters or exits. At the other time, close the decompression pipeline. Since the switching valve can be an on-off valve that simply opens and closes the decompression pipeline, the structure of the switching valve can be extremely simplified.

In this case, it may be configured, as necessary, that the supply pipe and the decompression pipe are formed in a block-shaped body, and the switching valve is configured to include: a cylinder block, which is provided across the decompression pipe to the body, and A cylinder hole through which the reel is slidably inserted is formed; a hole formed on the side of the cylinder hole that opens to the side of the cylinder hole and communicates with the supply duct side of the decompression duct is formed in the cylinder block The terminal of the hole is open and communicates with another hole on the side of the lubricating oil storage portion of the decompression pipe; a through hole is provided at the terminal portion of the reel, which opens between the side surface and the terminal surface of the reel when the reel enters and exits Or one of them is connected to the above-mentioned one hole when retreating, and is blocked by the wall surface of the cylinder hole when the reel enters or exits or the other one when retreating. In this way, the structure of the cylinder block is simple and simplified, and the assembly of the cylinder block is also easy.

In this case, it is effective to provide a through hole at the end of the reel, which opens between the side surface and the end surface of the reel, and communicates with the hole when the reel retreats, and is blocked by the cylinder when the reel enters and exits The wall surface of the hole is blocked, and the electromagnetic actuator is configured to include: a coil spring that urges the rod that can move forward and backward in an in and out direction; and an electromagnetic drive unit that causes the rod to pass through the coil when it is not energized The force of the spring enters and exits, and when powered, the rod is retracted against the force of the coil spring; and the electromagnetic actuator is relative to the switching valve in such a manner that the axis of the rod is parallel to the axis of the reel of the switching valve It is installed in parallel and installed on the main body via an installation member. Since the electromagnetic actuator and the switching valve can be arranged in parallel, the device can be miniaturized. [Effect of invention]

According to the present invention, when the rod of the electromagnetic actuator moves forward and backward, the connecting rod of the lever mechanism swings about the fulcrum to move the reel forward and backward. The lever mechanism increases the advance and retreat power of the rod and converts it into the forward and backward motion of the reel. Even if the force of advancing and retreating the rod is lower than before, the force of the reel can be increased, so that the obstruction of the action of the reel can be suppressed. Therefore, it is possible to increase the resistance of the coil of the electromagnetic actuator, thereby making it difficult for the electromagnetic actuator to generate heat even if it is frequently energized. As a result, even if the time for frequently energizing the electromagnetic actuator is extended, it will not hinder the operation of the reel, and the heat generation of the electromagnetic actuator can be suppressed within the allowable range.

Hereinafter, the lubrication pump device according to the embodiment of the present invention will be described based on the accompanying drawings. The lubricating pump device J of the embodiment shown in FIGS. 1 to 4 is, for example, as shown in FIG. 2(a), and is used for a grease lubricating system S installed in a machine such as a resin or metal injection molding machine, and feeds it as a fluid. Lubricants such as grease or oil. In this lubricating system S, lubricating oil is fed from a feed port 4 to be described later of the lubricating pump device J via a valve piping path R to a well-known single quantitative valve Vt arranged at a plurality of locations. Each single quantitative valve Vt has a single piston (not shown) that reciprocates by the pressurization and decompression of lubricating oil and ejects lubricating oil, and one ejection port corresponding to the piston, and the amount of ejection per time is 0.03 mL ~1.5 mL (0.03cc～1.5 cc). The lubricating pump device Ja has a function of decompressing by actuating a single metering valve V and spraying lubricating oil by pressurizing and decompressing lubricating oil.

The lubricating pump device J of the embodiment includes, as shown in FIGS. 1 to 4, a lubricating oil storage unit 1 that stores lubricating oil; a pump 2 that sucks lubricating oil from the lubricating oil storage unit 1 and ejects it; and a supply pipe 5 that will The lubricating oil sprayed from the pump 2 is supplied to the feed port 4 through the check valve 3; a decompression pipe 6 is provided between the supply pipe 5 and the lubricating oil storage unit 1 and decompresses the valve piping path R through the supply pipe 5; switching The valve 20 has a reel 21 that can advance and retreat, and the decompression pipe 6 is opened or closed by the reciprocating action of the reel 21; and the electromagnetic actuator 30 has a rod 31 that can retreat and decompress when not energized The pipeline 6 is opened, and when the power is turned on, the decompression pipeline 6 is closed to move the reel 21 of the switching valve 20 forward and backward.

The pump 2 is a well-known plunger pump including a piston 11 provided in a block-shaped body 10 and a cylinder 12. The piston 11 is reciprocally driven by an electric motor 13 via a cam mechanism (not shown). In addition, the supply pipe 5 and the decompression pipe 6 are formed in the block-shaped body 10. In the figure, the symbol 14 refers to the connection point between the supply pipe 5 and the decompression pipe 6 from the pump 2, and the symbol 15 refers to the corner of the decompression pipe 6 extending to the lubricating oil storage part 1. Symbol 16 refers to an exhaust valve that removes air from the supply pipe 5, and symbol 17 refers to a vacuum release valve that returns the lubricating oil to the lubricating oil storage unit 1 through a part of the decompression pipe 6 when the supply pipe 5 becomes higher than a certain pressure.

The switching valve 20 is constituted by an on-off valve interposed in the decompression pipe 6. The on-off valve is set to open at any time when the reel 21 enters or exits or retreats (in the embodiment, when it is retreating), and on the other hand, when the reel 21 enters or exits or retreats (an embodiment) (In and out), the decompression pipe 6 is set to be closed. Since the switching valve 20 is constituted by only opening and closing valves that open and close the decompression pipe 6, the structure of the switching valve 20 can be extremely simplified.

In detail, the switching valve 20 includes a cylinder 22 that spans the decompression pipe 6 on the body 10 and has a cylinder hole 23 through which the reel 21 can slide and be inserted. In the cylinder 22, a hole 24 formed on the side opening of the cylinder hole 23 and communicating with the supply pipe 5 side of the decompression pipe 6 is formed, and at the same time, a terminal opening of the cylinder hole 23 is formed and communicating with the decompression pipe 6 Another hole 25 on the side of the lubricant storage portion 1. In addition, at the terminal portion of the reel 21, a through-hole 26 opened between the side surface of the reel 21 and the terminal surface is provided. The through-hole 26 communicates with a hole 24 at any time when the reel 21 moves in or out (backward in the embodiment), and another time when the reel 21 moves in or out (backward in the embodiment) , Blocked by the wall surface of the cylinder hole 23. The structure of the cylinder 22 is simple, the structure can be simplified, and the assembly of the cylinder 22 can also be facilitated.

The electromagnetic actuator 30 is provided with: a coil spring 32 that always urges the rod 31 that can move forward and backward; and an electromagnetic drive unit 33 that causes the rod 31 to move in and out by the force of the coil spring 32 when it is not energized At this time, the lever 31 is retracted against the urging force of the coil spring 32. In addition, the electromagnetic actuator 30 is provided parallel to the switching valve 20 such that the axis of the rod 31 is parallel to the axis of the reel 21 of the switching valve 20 and is mounted on the body 10 via the mounting member 34. Since the electromagnetic actuator 30 and the switching valve 20 can be provided in parallel, the lubrication pump device can be miniaturized.

Furthermore, the present lubrication pump device J is provided with a lever mechanism 40 that increases the force of the forward and backward movement of the rod 31 of the electromagnetic actuator 30 and converts the forward and backward movement into the forward and backward movement of the reel 21 of the switching valve 20. The lever mechanism 40 includes a link 41. The connecting rod 41 is supported by a fulcrum shaft 42 constituting the fulcrum P1 in the middle of its longitudinal direction, and is pivotally supported about the fulcrum shaft 42 as a center. The fulcrum shaft 42 is supported by the body 10 via a support member 43. Moreover, one end of the connecting rod 41 is pivotally connected to a force point shaft 44 that constitutes a force point P2 provided at the front end of the rod 31 of the electromagnetic actuator 30. In addition, the other end of the connecting rod 41 is pivotally connected to an action point shaft 45 that constitutes an action point P3 provided at the front end of the reel 21 of the switching valve 20.

At one end of the connecting rod 41, a groove is formed along the long side direction of the connecting rod 41 from the end surface of the one end, and an engaging groove groove 46 that is movable relative to the force point shaft 44 and engages is formed. In addition, at the other end of the connecting rod 41, a groove is formed along the longitudinal direction of the connecting rod 41 from the end surface of the other end, and another engaging groove 47 that is movable relative to the point of action axis 45 and engages is formed. By this, one of the engaging grooves 46 of one end of the connecting rod 41 is inserted into the force point shaft 44 of the rod 31, so that one end of the connecting rod 41 can be easily pivotally connected to the rod 31, and the other of the connecting rod 41 The other engagement groove 47 at one end is inserted into the action point shaft 45 of the reel 21, so that one end of the connecting rod 41 can be easily pivotally connected to the reel 21, so that it can be easily assembled.

In addition, the relationship between the distance a between the fulcrum P1 and the force point P2 and the distance b between the fulcrum P1 and the action point P3 is set to 1.8≦(a/b). If (a/b) exceeds 1, there is a corresponding effect, and if (a/b) is 1.8 or more, the effect can be surely obtained. If the upper limit of (a/b) is set, it is 1.8≦(a/b)≦4. If (a/b) exceeds 4, the connecting rod 41 becomes longer, and the device becomes larger. The expectation is 2.0≦(a/b)≦3. In the embodiment, 2.0=(a/b). For example, set a = 23.6 mm and b = 11.8 mm. Accordingly, the relationship between the stroke x of the rod 31 and the stroke y of the reel 21 also becomes 2.0=(x/y).

The control circuit of the lubrication pump device J is shown in FIG. 2(b). The electric motor 13 and the electromagnetic actuator 30 are counted by a timer 50, for example, and the switch 51 is turned on and off, and the power source 52 is intermittently energized. In addition, a manual push button switch 53 is provided in the control circuit, which can forcibly energize the electric motor 13 and the electromagnetic actuator 30 to supply lubricating oil to the valve Vt through the valve piping path R. In addition, the turning on and off of the electric motor 13 and the electromagnetic actuator 30 are not limited to the timer 50, and may be performed according to a command signal from a machine side such as an injection molding machine, for example, and may be changed as appropriate.

Therefore, according to the lubrication system S using the lubrication pump device J of the embodiment, the timer 50 is normally energized intermittently. When not energized, as shown in FIG. 3, the pump 2 is stopped, and the reel 21 of the switching valve 20 is at the backward position to open the decompression pipe 6. After power-on, as shown in FIG. 4, the electric motor 13 and the electromagnetic actuator 30 are turned on, the electromagnetic actuator 30 withdraws the lever 31, and advances the reel 21 via the lever mechanism 40. In this case, in the lever mechanism 40, the relationship between the distance a between the fulcrum P1 and the force point P2 and the distance b between the fulcrum P1 and the action point P3 is 1.8≦(a/b). In the embodiment, since it is set to 2 = (a/b), so the lever mechanism 40 increases the forward and backward power of the rod 31 and converts it into the forward and backward motion of the reel 21. Therefore, even if the force of advancing and retreating the lever 31 is lower than before, the force of the reel 21 can be increased, so that the hindrance to the operation of the reel 21 can be suppressed. As a result, the decompression pipe 6 is closed, and the lubricating oil is discharged from the pump 2 to the supply pipe 5 to supply the lubricating oil to the valve Vt through the valve piping path R.

On the other hand, after the lubricating oil is supplied to the valve Vt, the electric motor 13 and the electromagnetic actuator 30 are turned off when they become non-energized. As a result, the coil spring 32 of the electromagnetic actuator 30 moves the rod 31 in and out, and the reel 21 is retracted via the lever mechanism 40. By this, the decompression pipe 6 is opened, and the valve piping path R is decompressed, so that the valve Vt is restored to the original position for the next use.

Also, for example, when the valve Vt is piped to supply lubricating oil for the first time, or during maintenance, etc., air will stay in the valve Vt or in the valve piping path R, and if it is to be discharged as soon as possible, the lubricating oil will be filled in the pipe In this case, the manual button switch 53 is repeatedly pressed, and the electric motor 13 and the electromagnetic actuator 30 are forcibly energized and de-energized. Thereby, since the lubricating oil is frequently supplied from the pump 2, exhaust in the valve Vt or in the valve piping path R is performed.

In this case, the rod 31 of the electric actuator 30 moves forward and backward, and the reel 21 moves forward and backward via the lever mechanism 40. The lever mechanism 40 increases the forward and backward power of the rod 31 and converts it into the forward and backward motion of the reel 21. Therefore, even if the force of advancing and retreating the rod 31 is lower than before, the force acting on the reel 21 can be increased, so that the hindrance to the operation of the reel 21 can be suppressed. Therefore, the resistance of the coil of the electromagnetic actuator 30 can be increased, and even if the current is frequently energized, it is not easy to generate heat. As a result, even if the time for frequently energizing the electromagnetic actuator 30 is increased, the operation of the reel 21 is not hindered, and the heat generation of the electromagnetic actuator 30 can be suppressed within an allowable range.

FIG. 5 shows a variation of the lubrication pump device J according to the embodiment of the present invention. In this modification, the configuration of the switching valve 20 is different from the above. The switching valve 20 is a three-port switching valve for switching between the supply pipe 5 and the decompression pipe 6, and is not an on-off valve interposed in the decompression pipe 6. When the electromagnetic actuator 30 is turned off, that is, when the spool 21 moves backward, the port switching valve sets the decompression duct 6 to open, and sets the supply duct 5 on the side of the pump 2 to close. On the other hand, the electromagnetic actuator 30 is connected to In general, when the reel 21 is moved in and out, the decompression pipe 6 is closed, and the supply pipe 5 on the pump 2 side is opened. By this, the same action and effect as above are also obtained. [Example]

Examples are shown below. In the embodiment, in the structure of the lubricating pump described in the above embodiment, the electromagnetic actuator has an attractive force of 9 N and an energization rate of 100%. As a comparative example, a previous device using an electromagnetic actuator with an attraction force of 16 N and an energization rate of 25% was used to conduct a comparative test of heat generation and operation. The comparative test repeats the intermittent operation of turning on for 3 minutes and turning off for 3 minutes. In the comparative example, the heat generation of the electromagnetic actuator exceeds the allowable range. However, in the embodiment, the heat generation can be suppressed within the allowable range. In addition, the force for operating the reel can be sufficiently ensured, and unobstructed operation can be confirmed.

In addition, in the above embodiment, the electromagnetic actuator 30 is configured to move the rod 31 in and out with the coil spring 32 when it is not energized, and to retract the rod 31 when it is energized, but it is not limited to this. The electromagnetic actuator 30 may be configured to enter and exit by being energized, and retreat due to the coil spring 32 when not energized. In FIG. 3( a ), it may also be arranged symmetrically with respect to the longitudinal direction of the connecting rod 41. Furthermore, in the above-described embodiment, the switching valve 20 is configured to open the decompression duct 6 when the spool 21 moves backward, and close the decompression duct 6 when the spool 21 enters or exits, but it is not limited to this. The switching valve 20 may also be configured to open the decompression duct 6 when the reel 21 enters and exits, and to close the decompression duct 6 when the reel 21 retreats, and accordingly, the configuration or configuration of the electromagnetic actuator 30 may also be changed , And the required action can be realized by the lever mechanism.

Moreover, in the embodiment, the case of using grease as lubricating oil has been described, but it is not limited to this, and of course, it can also be applied to the case of using oil as lubricating oil. In short, the industry may not substantially deviate from the novel teachings and effects of the present invention, but add more changes to the illustrated implementation forms, and these more changes are included in the scope of the present invention.

The contents of the documents described in this specification and the Japanese application specification that became the basis of Paris priority in this case are cited here.

1‧‧‧Lubricant storage 2‧‧‧Pump 3‧‧‧Check valve 4‧‧‧send 5‧‧‧Supply pipeline 6‧‧‧Decompression pipeline 10‧‧‧Body 11‧‧‧ Piston 12‧‧‧Cylinder 13‧‧‧Electric motor 14‧‧‧ connection point 15‧‧‧ Corner 16‧‧‧Exhaust valve 17‧‧‧Vacuum relief valve 20‧‧‧Switching valve 21‧‧‧Scroll 22‧‧‧Cylinder 23‧‧‧Cylinder hole 24‧‧‧ one hole 25‧‧‧ another hole 26‧‧‧Through hole 30‧‧‧Electromagnetic actuator 31‧‧‧ 32‧‧‧coil spring 33‧‧‧Electromagnetic drive department 34‧‧‧Installing components 40‧‧‧Leverage 41‧‧‧Link 42‧‧‧ pivot axis 43‧‧‧Support component 44‧‧‧force point shaft 45‧‧‧action point axis 46‧‧‧One snap groove 47‧‧‧Another groove 50‧‧‧Counter 51‧‧‧switch 52‧‧‧Power 53‧‧‧button switch 100‧‧‧Lubricant storage 101‧‧‧Electric motor 102‧‧‧Pump 103‧‧‧Check valve 104‧‧‧Give delivery 105‧‧‧Supply pipeline 106‧‧‧Decompression pipeline 110‧‧‧solenoid valve 111‧‧‧Switching valve 112‧‧‧coil spring 113‧‧‧Electromagnetic actuator 114‧‧‧Exhaust valve 115‧‧‧Vacuum relief valve 120‧‧‧Timer 121‧‧‧Switch 122‧‧‧Power 123‧‧‧ button switch A-A‧‧‧line B-B‧‧‧line a‧‧‧Distance between pivot point P1 and force point P2 b‧‧‧Distance between pivot point P1 and action point P3 J‧‧‧Lubrication pump device Ja‧‧‧lubrication pump device P1‧‧‧ Fulcrum P2‧‧‧force point P3‧‧‧action point R‧‧‧ Valve piping path S‧‧‧Lubrication system Vt‧‧‧quantity valve x‧‧‧Stroke y‧‧‧Stroke

Fig. 1 shows a lubricating pump device according to an embodiment of the present invention, (a) is a front view, and (b) is a side view. 2 is a diagram showing the configuration of a lubricating pump device according to an embodiment of the present invention, (a) is a piping diagram shown in a state of being connected to a valve piping path provided with a valve for supplying lubricating oil, and (b) is a control of a lubricating pump device Circuit diagram. 3 is a diagram showing the state of the lubricating pump device of the embodiment of the present invention when the pump is stopped, (a) is a cross-sectional view of the main part along line AA in FIG. 1, (b) is along line BB in FIG. Main section view. 4 is a diagram showing the state of the pump of the lubricating pump device of the embodiment of the present invention when it is actuated, (a) is a cross-sectional view of the main part along line AA in FIG. 1, and (b) is along line BB in FIG. It is quite a cross-sectional view. 5 is a piping diagram showing a modified example of the lubrication pump device according to the embodiment of the present invention. Fig. 6 is a diagram showing an example of the configuration of the previous lubrication pump device, (a) is a piping diagram shown in a state where it is connected to a valve piping path provided with a valve for supplying lubricating oil, and (b) is a control circuit diagram.

1‧‧‧Lubricant storage

2‧‧‧Pump

3‧‧‧Check valve

4‧‧‧send

5‧‧‧Supply pipeline

6‧‧‧Decompression pipeline

13‧‧‧Electric motor

14‧‧‧ connection point

16‧‧‧Exhaust valve

17‧‧‧Vacuum relief valve

20‧‧‧Switching valve

21‧‧‧Scroll

30‧‧‧Electromagnetic actuator

31‧‧‧

32‧‧‧coil spring

33‧‧‧Electromagnetic drive department

40‧‧‧Leverage

41‧‧‧Link

50‧‧‧Counter

51‧‧‧switch

52‧‧‧Power

53‧‧‧button switch

J‧‧‧Lubrication pump device

S‧‧‧Lubrication system

Vt‧‧‧quantity valve

R‧‧‧ Valve piping path

Claims (6)

A lubricating pump device for feeding lubricating oil from a self-feeding port to a valve piping path provided with a valve that operates by pressurizing and decompressing lubricating oil and ejects the lubricating oil, and is characterized by having: Lubricating oil storage unit, which stores lubricating oil; A pump that sucks lubricating oil from the lubricating oil storage part and ejects it; A supply pipe which supplies the lubricating oil sprayed from the pump to the feed port through a check valve; A decompression pipeline, which is provided between the supply pipeline and the lubricating oil storage portion, and decompresses the valve piping path through the supply pipeline; The switching valve has a reel capable of advancing and retreating, and the decompression pipeline is opened or closed by the reciprocating action of the reel; An electromagnetic actuator having a lever capable of advancing and retreating, which advances and retreats the reel of the switching valve by opening the decompression pipe when not energized and closing the decompression pipe when energized; and The lever mechanism increases the forward and backward power of the lever and converts the forward and backward motion of the lever of the electromagnetic actuator into the forward and backward motion of the reel of the switching valve. The lubricating pump device of claim 1, wherein The above-mentioned lever mechanism includes: a connecting rod whose middle part in the longitudinal direction is supported by a fulcrum shaft that constitutes a fulcrum, and is pivotally supported around the fulcrum shaft; One end of the connecting rod is pivotally connected to a force point constituting a force point provided at the front end of the rod of the electromagnetic actuator; The other end of the connecting rod is pivotally connected to the action point constituting the action point provided at the end of the switch valve before the winding shaft; and The relationship between the distance a between the fulcrum and the force point, and the distance b between the fulcrum and the action point is set to 1.8≦(a/b). The lubricating pump device of claim 2, wherein At one end of the connecting rod, a groove is cut from the end surface of the one end along the longitudinal direction of the connecting rod to form an engaging groove that can move relative to the force point axis and engage; At the other end of the connecting rod, a groove is formed along the longitudinal direction of the connecting rod from the end face of the other end to form another engaging groove that can move relative to the axis of the action point and engage. The lubrication pump device according to any one of claims 1 to 3, wherein The switching valve is constituted by an on-off valve interposed in the decompression pipeline; and On-off valve Open the above decompression pipeline at any time when the above reel enters or exits or when retreating; When the reel enters or exits or when it moves backward, the decompression pipe is closed. The lubricating pump device of claim 4, wherein The above-mentioned supply pipeline and decompression pipeline are formed in a block-shaped body; The switching valve includes: a cylinder block, which is provided across the decompression duct and is provided on the body, and has a cylinder block hole through which the reel is slidably inserted; The cylinder is formed with a hole that opens at the side of the cylinder hole and communicates with the supply pipe side of the decompression pipe, and the lubricating oil reservoir that opens at the end of the cylinder hole and communicates with the decompression pipe Another hole on the side; A through-hole is formed in the terminal portion of the reel, which opens between the side surface and the terminal surface of the reel, communicates with the above-mentioned one hole when either the reel enters or exits or retreats, and retreats when the reel enters or exits The other one is blocked by the wall surface of the cylinder hole. The lubricating pump device of claim 5, wherein A through-hole is formed in the terminal portion of the reel, which opens between the side surface and the terminal surface of the reel, communicates with the one hole when the reel retreats, and is blocked by the wall surface of the cylinder hole when the reel enters and exits; The above electromagnetic actuator has: Coil spring, which always urges the rod that can move forward and backward; An electromagnetic drive part which causes the rod to enter and exit by the force of the coil spring when not energized, and causes the rod to retreat against the force of the coil spring when energized; and The electromagnetic actuator is provided in parallel with the switching valve in such a manner that the axis of the rod is parallel to the axis of the winding shaft of the switching valve, and is mounted on the body through the mounting member.

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