JPH054907Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a lubricating device that injects liquid lubricating oil onto parts that are sent in a continuous process, and particularly relates to a lubricating device that sprays liquid lubricating oil onto materials or molds in press machines. The present invention relates to an oil application device that sprays lubricant.

BACKGROUND TECHNOLOGY A conventional apparatus for applying lubricant to materials or molds is such that, as shown in Japanese Patent Laid-Open No. 58-72797, a nozzle is installed above the mold with the injection hole of the nozzle facing downward, and the lubricant is applied to the mold. The mold is coated with oil by spraying it downward.

Problems that the invention aims to solve: When applying oil to parts that are sent in a continuous process, there is a lack of space to install the oil above, there is interference with the conveying device, and the nozzle cannot be installed above depending on the shape of the part. There are cases. In particular, when a liquid lubricant is injected onto the material or die in a press machine, the space between the upper die and the lower die is narrow, the upper die and slide are constantly raised and lowered, and transfer devices such as In many cases, it is not possible to install the nozzle upwards due to the fact that feeding devices that protrude from the front and back are often used. In this case, it is necessary to apply oil by installing the nozzle at an angle or sideways from the side of the material or mold. In this case, it is possible to apply oil from the side, but since the lubricant to be injected is liquid and the injection hole of the nozzle is sprayed at an angle or sideways, the oil may adhere to the periphery of the injection hole of the nozzle during injection. is transmitted along the outer surface of the nozzle and falls, staining the floor around the nozzle. Even after injection is stopped, it may adhere to the inside of the nozzle or remain in the piping.
Oil that leaks from a pressure pump flows out of the nozzle's injection hole, travels along its outer surface, and drips around the nozzle. These phenomena are called "dripping," and they cause problems such as staining the area around the nozzle and the floor, and wasting oil.

In order to solve this problem, the oil applicator of the present invention has a liquid receiver at the periphery of the injection hole at the tip of the nozzle to collect the so-called "dripping oil," and uses a vacuum block to suck up the dripping oil. The lubricant is collected in an oil tank, and a high-pressure booster pump sucks in the lubricating oil in the oil tank, pressurizes it, and injects it in liquid form from a nozzle to prevent liquid dripping. In addition, a solenoid valve that opens and closes compressed air to the vacuum block, and a timer and counter that set the operating time and number of times of operation of the solenoid valve are installed to adjust the amount of oil applied and to save lubricant. With the goal.

In addition, among the components of the oil application device, the nozzle of the oil application operation member is separated and held on an independent stand so that it can be installed at a position and slope that is easy to apply oil, and the other oil application management operation members are movable. Another object of the present invention is to house the oil in an independent case so that the amount of oil applied and the operation can be easily and centrally operated from a remote location.

Means for Solving the Problems The structure of the present invention provided to achieve the above object will be explained with reference to the overall configuration diagram in FIG. 1 and the explanatory block diagram in FIG. 4. First, the oil applicator of the present invention has a nozzle 7 equipped with a drip receiver 8 on the periphery of the injection hole 7a at the tip of the nozzle 7, and reciprocates the piston 2 by supplying and exhausting compressed air to fill the oil tank 12.
A high-pressure booster pump 1 is provided that sucks in the lubricant L, pressurizes it, and injects it in liquid form from the nozzle 7.An oil chamber adjustment device 4 is provided in the oil chamber 33 that sucks the lubricant L of the pump 1, and on the other hand, the pump 1 is equipped with a high-pressure booster pump 1 that sucks in the lubricant L, pressurizes it, and injects it in liquid form from the nozzle 7. A vacuum block 21 is provided which sucks the dripping oil M accumulated in the drip receiver 8 of the nozzle 7 by air supply and collects it into the oil tank 12. Solenoid valves 18 and 19 that control air supply and exhaust
The lubricating device is provided with a timer 27, 28 and a counter 29 for setting the operating time and number of operating times of the electromagnetic valves 18, 19.

Furthermore, in the oil applicator having the above-mentioned structure, the nozzle 7 equipped with the liquid receiver 8 is separated and held tiltably on a movable stand 30, and the other components such as the solenoid valves 18, 19 and the timer 27 are separated. ,2
8. The counter 29, oil tank 12, high pressure booster pump 1, vacuum block 21 and compressed air source connection port 20 are all housed in a movable independent case 31, and the high pressure booster pump 1 and vacuum block 21 are housed on the side of the case 31. The nozzle 7 and the drip pan 8 on the side of the stand 30 are connected to each other by a detachable flexible hose.

Function The stand 30 is attached to the material or mold (not shown).
are brought closer together and the arm 26 is tilted to install the nozzle 7 at an appropriate position and inclination. The oil application device of the present invention starts operating when an activation signal (ON) is sent to the solenoid valves 18 and 19.

First, when the solenoid valve 18 operates, compressed air is sent to the air chamber 32 of the high-pressure booster pump 1, and the piston 2 moves forward. When the solenoid valve 18 stops after the time set by the timer 27 has elapsed, the compressed air is exhausted and the return spring is released. 5, the piston 2 returns to its original position. The piston 2 sucks in the lubricant L in the oil tank 12 on the return trip, pressurizes it on the outward trip, and injects it in liquid form from the nozzle 7 onto the material or mold. The piston 2 reciprocates once in response to one actuation signal, and the nozzle 7 injects the lubricant L once. At this time, the dripping oil M that runs down from the periphery of the injection hole of the nozzle 7 is collected in the drip receiver 8. On the other hand, compressed air is sent to the vacuum block 21 by the solenoid valve 19, and the oil M accumulated in the drip tray is sucked and collected into the oil tank 12, thereby achieving the purpose of preventing dripping and saving the oil L. Ru.

Further, in the oil chamber adjustment device 4, the volume of the oil chamber 33 is adjusted, and the amount of oil L sucked into the oil chamber 33 is adjusted. Since the inhaled lubricant L is delivered under pressure, the amount of lubricant applied is basically adjusted.

In addition, the solenoid valves 18 and 19 have timers 27 and 19, respectively.
It operates for a set time of 28 seconds. By adjusting the settings of the timer 27, the amount of oil applied is adjusted, and by adjusting the settings of the timer 28, the amount of compressed air discharged through the vacuum block 21 is adjusted.

Also, when operating this lubricating device in conjunction with a press machine, the operation is started by an activation signal (ON) sent from the press machine every stroke. When operating intermittently, an operating signal is sent via the timer 29. The solenoid valves 18 and 19 are intermittently operated once per the number of times set by the counter 29. Therefore, by adjusting the oil chamber adjusting device 4 and setting the timer 27 and counter 29, the objectives of adjusting the amount of oil applied and saving the oil can be achieved.

Next, among the components housed in the case 31, the front operation panel of the case 31 (FIG. 5) includes management operation members such as timers 27 and 28, a counter 29, a pressure gauge 25 for the compressed air source 20, and an oil tank. 12 oil level gauges 37, buzzer 4 with stop button to indicate oil shortage
6, an oil shortage indicator lamp 47, a manual operation switch 45, and a power start switch 44 are arranged for easy management and operation, making it easy to operate the oil applicator, adjust the amount of oil applied, replenish oil, etc. can be centrally managed,
The purpose of improving the workability of the lubricating device of the present invention is achieved.

Embodiment (1) Embodiment (1) of the present invention will be described below based on the drawings. In the overall configuration diagram of FIG. 1, 20 is a compressed air source, and 24 is an air supply pipe from the compressed air source 20, which supplies air by branching it to solenoid valves 18 and 19. 23 is an opening/closing mechanism, and 25 is a pressure gauge. The solenoid valve 18 is a 3-port, 2-position switching valve that operates during the time set by the timer 27.
When the solenoid valve 18 operates, compressed air is sent from the compressed air source 20 through the air pipe 3 to the air chamber 32 of the high-pressure booster pump, and the piston 2 moves forward against the biasing force of the return spring 5 due to the pressure. Then, the lubricant L sucked into the oil chamber 33 is pressurized and sent to the nozzle 7 through the outlet 34 and the oil feed pipe 14, and is injected in liquid form from the injection hole 7a at the tip.
When the solenoid valve 18 stops after the set time of the timer 27 has passed, the compressed air in the air chamber 32 is exhausted and the piston 2 is returned to its original position by the biased return spring 5, but at this time the oil L in the oil tank 12 is The oil is sucked into the oil chamber 33 through the oil supply pipe 13. 35, 36
is a check valve that ensures suction of the oil L into the oil chamber 33 or pressurized delivery of the oil L from the oil chamber 33 when the piston 2 moves forward or returns. The oil chamber adjustment device 4 has a structure in which a screw member screwed into the oil chamber 33 is moved back and forth to change the internal volume of the oil chamber 33 and change the amount of oil sucked in. adjust. Furthermore, if the viscosity of the lubricant L is high, the speed at which the lubricant L is pressurized and delivered from the piston 2 will decrease due to its resistance, but the timer 27 can be set to a long operating time to reduce the delay in the speed of the piston 2. to correct.

The structure of the nozzle 7 is illustrated in an enlarged scale in FIG.
The nozzle 7 is screwed onto the main body 6 so as to sandwich the drip receiver 8. The drip receiver 8 has a shape that surrounds the periphery of the injection hole 7a at the tip of the nozzle 7,
An opening hole 8a is provided in front of it. Opening hole 8
The size of a is made large enough not to block the oil L injected from the injection hole 7a. An outlet hole 9 is provided at the bottom of the drip receiver 8, and a drain fitting 10 is attached to the outlet hole 9. A drain pipe 17 is further connected to the drain fitting 10. When the nozzle 7 is installed at an angle or sideways, the drip pan 8 always aligns the nozzle 7 with the outlet hole 9 located at its lower bottom.
will be equipped. All of the dripping oil M that runs down from the periphery of the injection hole 7a during oil application is collected in the drip receiver 8 and stored in the outlet hole 9 at the bottom.

The structure of vacuum block 21 is illustrated in FIG. Numerals 41, 42, and 43 are piping joints that are attached to three-way ports of the vacuum block 21, and are connected to an air supply pipe 15, an exhaust pipe 16, and a drain pipe 17, respectively. 39 is a ventilation hole, 40 is a cavity. Solenoid valve 19
Due to the operation of
and is exhausted from the pipe joint 42 via the exhaust pipe 16. 21a and 21b indicate the direction of the air supply. At that time, the inside of the cavity 40 approaches a vacuum state, and suction force acts in the direction 21c. The dripping oil M accumulated in the outlet hole 9 of the drip pan 8 is sucked through the drain pipe 17, discharged into the exhaust pipe 16 together with the compressed air passing through the ventilation hole 39, and collected in the oil tank 12. . The solenoid valve 19 is the same as the solenoid valve 1 described above.
Like 8, it is a 3 port 2 position switching valve, and the timer 28
It operates for a set time, but by setting an appropriate operating time, it prevents wastage of compressed air.

When applying oil to the material or mold of the press machine in operation, the operation of the timers 27 and 28 is interlocked with the press machine. The timers 27 and 28 start operating in response to an activation signal (ON) that is transmitted every stroke by a rotary cam switch (not shown) of the press machine. Further, the amount of oil applied can be adjusted by reducing the number of times the timers 27 and 28 are activated not every stroke but once every few strokes. At this time, the number of times is set in the counter 29. The amount of oil applied is adjusted to an appropriate amount by adjusting the oil chamber volume of the oil chamber adjusting device 4, adjusting the operating time setting of the timer 27, and adjusting the operating number of times of the counter 29. When lubricating parts that are sent in a continuous process, not just press machines, the lubricating device is activated by receiving an activation signal (ON) each time from the continuous feed device. Next time, when manually (including testing) to lubricate the material or mold, turn on the operation switch 45 (5th
The actuating signal (ON) is sent by the control shown in FIG. 2, and the lubricating device is similarly actuated via the timers 27 and 28 and the solenoid valves 18 and 19. It operates once for each activation signal of the operation switch 45 to apply oil. When operating manually, the amount of oil applied is adjusted by setting the timers 27 and 28 and adjusting the oil chamber adjustment device 4.

Embodiment (2) The lubricating device of the present invention has the configuration shown in the block diagram for explaining the operation in Fig. 4. In Embodiment (2), in order to easily and effectively centrally operate the lubricating device, Its constituent members are separated into two units, of which the nozzle 7, which is a direct oil applying member, is held tiltably on an independent stand 30, and the other indirect management operating members are housed in a case 31. This will be explained below based on the drawings.

As shown in FIG. 2, the main body 6 of the nozzle 7, which is equipped with a liquid receiver 8, is held by an arm 26 that is tiltably pivoted on a movable stand 30. (not shown) and is installed at a position and tilt that makes it easy to apply oil.

In addition, as shown in FIG. 4, a movable independent case 31 includes a solenoid valve 18, which is an indirect control operation member.
19, timers 27, 28, counter 29, oil tank 12, high pressure booster pump 1, vacuum block 21 and compressed air source 20 are housed together, and the high pressure booster pump 1 and vacuum block 21 on the case 31 side and the above-mentioned The nozzle 7 and the drip receiver 8 on the side of the stand 30 are connected by a detachable flexible hose.

Now, since the independent stand 30 that holds the nozzle 7 and the independent case 31 are installed at respective effective locations, the length of the oil pipe 14 between the nozzle 7 and the high-pressure booster pump on the case 31 side changes. Although the amount changes, the device of the present invention has a device for adjusting the amount of applied oil, so it can be easily corrected.

Also, as shown in the front view of the case 31 in FIG.
On the front operation panel of the case 31, among the management operation members mentioned above, there are operating time setting members for the timers 27, 28 and the counter 29, a pressure gauge 25 for the compressed air source 20, an oil level gauge 37 for the oil tank 12, and an oil shortage indicator. Monitoring components such as the buzzer 46 with a stop button and the oil shortage indicator lamp 47, the operation of the oil application device related to the operation switch 45 and the power start switch 44 during manual (or test) operation, adjustment of the amount of oil application, and replenishment of the oil agent L. can be easily and centrally operated.

Effects of the invention Since the present invention has the above-described structure and function, it exhibits the following excellent effects.

First, since the lubricating oil is sprayed in liquid form from the nozzle, there is no risk of it scattering into the air and being inhaled by the worker, unlike sprayed oil, improving the working environment.

Even when applying oil with the nozzle tilted or sideways, all the dripping oil that drips from the injection hole is collected in the drip tray, so the surrounding area will not be contaminated. In addition, any oil remaining in the nozzle after injection or leaking from the pressure pump is collected in the drip tray, so the surrounding area will not be contaminated. Even if the nozzle is tilted, the surrounding area will not be contaminated, so the nozzle can be installed at a position and inclination that makes it easy to apply oil to the material or mold to be oiled.

In addition, since the dripping oil that has accumulated in the drip tray is easily collected into the oil tank by a vacuum block using compressed air, waste of oil can be prevented and oil can be saved.

Furthermore, the high-pressure booster pump and vacuum block of the present invention are operated using compressed air supply and exhaust controlled by a solenoid valve, a timer, and a counter, so the structure is simple and easy to operate.

In addition to the basic adjustment of the amount of oil applied using the oil chamber adjustment device of the high-pressure booster pump, the amount of oil applied can be easily adjusted by setting the operating time of the timer and the number of times the lubricant is applied. You can save money reasonably. In addition, since these oil application amount adjustment devices are housed together in an independent case together with the oil storage tank and the operating device, the oil application amount adjustment work can be made significantly more efficient.

Furthermore, if the operating time of the high-pressure booster pump changes due to a change in the viscosity of the lubricant used, this can be easily corrected by adjusting the timer operating time setting, so the amount of oil applied can always be maintained at an appropriate level.

In addition, the nozzle can be installed in a location where it is easy to apply oil to the material or mold to be oiled, and the case side can also be installed in a location where it is easy to centrally operate the hose between the nozzle and the high-pressure booster pump on the case side. Although the length of the lubricant changes and requires correction of the amount of oil to be fed, there is no problem at all because the above correction of the amount of oil to be fed can be done by simply adjusting the amount of oil to be applied using this oil applicator.

In addition, when used for lubricating materials or molds of a press machine that is in continuous operation, it can be easily automated by using the signal transmitted from each stroke of the press machine, and it can also be used to apply various amounts of lubricant, including intermittent stroke lubricating. Automation of oil application work can be made effective through adjustment.

In addition, not only press machines but also oiling work for parts sent in continuous processes can be easily automated by using the transmission signals of the continuous processes, and it is also possible to prevent dripping and save oil.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of an oil applicator with an adjustable drip prevention device according to the present invention, and Fig. 2 is a sectional view showing the structure of a nozzle equipped with a drip receiver according to the present invention.
FIG. 3 is a sectional view showing the structure of the vacuum block of the present invention, FIG. 4 is an explanatory block diagram of the oil applicator of the present invention, and FIG. 5 is a front view of the case of the present invention. In the figure, 1 is a high-pressure booster pump, 2 is a piston, 4 is an oil chamber adjustment device, 7 is a nozzle, 8 is a drip receiver, 12 is an oil tank, 18 and 19 are electromagnetic valves,
21 is a vacuum block, 27 and 28 are timers, 29 is a counter, 30 is a stand, 31 is a case, and 33 is an oil chamber.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A nozzle is provided with a drip tray on the periphery of the injection hole at the tip of the nozzle, and the piston is reciprocated by supplying and exhausting compressed air, and the lubricating oil in the oil tank is removed on the outward journey. A high-pressure booster pump is installed, which sucks in the oil, pressurizes it on the return path, sends the oil, and injects it in liquid form from a nozzle.An oil chamber adjustment device is installed in the oil chamber that sucks the oil, and on the other hand, the liquid is pumped by supplying compressed air. A vacuum block is provided that sucks the dripping oil that has accumulated in the drip tray and collects it into an oil tank, and a solenoid valve that controls opening and closing of compressed air is provided for the high-pressure booster pump and the vacuum block. A lubricating device with a drip prevention device that allows the amount of lubricant to be applied to be adjustable, and is characterized by a configuration that includes a timer and a counter for setting the operating time and number of operating times. (2) In the oil applicator according to item 1 above, the nozzle equipped with a drip receiver is held tiltably on a movable independent stand, and other components such as a solenoid valve, a timer, a counter, an oil tank, The high-pressure booster pump, vacuum block, and compressed air source connection port are all housed in a movable independent case, and the connection between the high-pressure booster pump and vacuum block on the case side and the nozzle and drip tray on the stand side is detachable. A lubrication device with a drip prevention device that allows the amount of lubrication to be adjusted and is characterized by being connected by a flexible hose.