JP2005090649A - Lubrication device of printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubrication device at low cost capable of increasing oil cleaning capacity and supplying sufficient amount of oil to a printing machine. <P>SOLUTION: Oil in the oil bath 17 of the printing machine 1 is taken in a first filter 21 through a first pipe 25. After the oil is filtered, it is sucked into an oil supply pump 28 through a second pipe 27. The oil discharged from the oil supply pump 28 is distributed to a pipe 34a and a pipe 34b by a flow divider 32, and the lubricating oil divided to the pipe 34a is fed to the printing machine 1. On the other hand, the oil divided into the pipe 34b is taken into a second filter 40, abrasive powder and moisture are absorbed, and the oil is fed to the first filter 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lubrication device for a printing press that feeds oil such as lubricating oil (hereinafter referred to as oil) to rotating parts such as bearings and gears, cams, and levers of a printing cylinder, such as bearings of a printing cylinder. It is.

The lubrication system in the conventional lubrication system uses a filter to clean the oil in the printing press and lubricates each cylinder bearing, and lubricates rotating parts such as gears, cams and levers for driving the printing cylinder group. And a circulating oil pump that circulates oil in the oil bath through a filter in order to remove wear powder and moisture mixed in the oil (see, for example, Patent Document 1). . In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
Japanese Utility Model Publication No. 60-551 (column 3, line 33 to column 4, line 23, figure)

  The above-described conventional oil supply device for a printing press is manufactured because an oil pump for circulating and purifying the oil in the oil bath with a filter is required in addition to the oil supply pump for supplying oil to each part of the printing press. Not only will the cost increase, but the installation space will also increase. In addition, maintenance must be performed by both the oil supply pump and the circulation pump, and if the oil supplied to the printing machine is dirty, is it due to the oil supply side pump? There has been a problem that the work of checking whether it is caused by the pump on the circulation side is troublesome and the burden on the operator increases. In an attempt to solve this problem, if a filter for lubrication is replaced with a filter having a high cleaning ability, only a filter for oil supply is absorbed without providing a pump and filter for circulation, Although the oil cleaning ability is improved, on the other hand, the amount of oil discharged through the filter becomes extremely small, and there is a problem that it becomes impossible to supply the necessary amount of oil to the printing press. .

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a low-cost oil supply device capable of improving the oil cleaning ability and supplying a sufficient amount of oil to a printing press. There is.

In order to achieve this object, the invention according to claim 1 is directed to an oil supply device for a printing press that cleans the oil of the printing press with a filter and supplies the oil to the printing press with an oil supply pump. 1 filter and the 2nd filter which cleans the oil cleaned by this 1st filter, The said oil supply pump sucks the oil cleaned by the 1st filter, and supplies it to the said 2nd filter and a printing machine The second filter and the oil pump are connected so that the oil purified by the second filter is sucked by the oil pump.
The invention according to claim 2 is the invention according to claim 1, wherein the second filter and the first filter are connected so that the oil cleaned by the second filter can be sent to the first filter. It is a thing.
The invention according to claim 3 is the invention according to claim 2, wherein the first filter and the suction port of the oil pump are connected, and the discharge port of the oil pump, the second filter, and the printing press are connected. And connecting the first filter with an oil bath of the printing press and the second filter, and taking oil from the oil bath of the printing press and oil cleaned by the second filter into the first filter. is there.
The invention according to claim 4 is the invention according to claim 3, wherein the first filter includes first and second suction ports and a first filter discharge port, and the second filter is a second filter suction port. And a second filter discharge port, a first pipe connecting the first suction port of the first filter and an oil bath of the printing press, a first filter discharge port of the first filter, and an oil supply pump A second pipe that connects the suction port, a discharge port of the oil pump, a second filter suction port of the second filter, and a printing machine, and the oil discharged from the discharge port of the oil pump is And a third pipe distributed to the two filters and the printing machine, and a fourth pipe connected to the second filter discharge port of the second filter and the second suction port of the first filter.
According to a fifth aspect of the present invention, in the first aspect of the invention, a detection unit that detects an abnormality in the flow rate of the oil discharged from the second filter, and an operation of the printing press based on a detection signal from the detection unit. And a control device that disables the operation.
The invention according to claim 6 is the invention according to claim 5, wherein the second filter absorbs moisture mixed in oil.
The invention according to claim 7 is the invention according to claim 5, wherein the detection means is a detection object supported by an elastic member so as to resist the flow of oil, and a sensor for detecting the detection object. It is constituted by.
The invention according to claim 8 is the invention according to claim 5, wherein notification means for notifying the detection result of the detection means is provided.
The invention according to claim 9 is the invention according to claim 1, further comprising a flow rate adjusting means for limiting the flow rate of the oil supplied from the oil supply pump to the printing press so as not to exceed a predetermined amount. .

According to the first to fourth aspects of the invention, the oil cleaning ability is improved by providing the second filter. In addition, the use of a single oil pump enables a compact configuration that can be installed in a small space, not only reducing the manufacturing cost, but also reducing the number of check items during maintenance, thereby reducing the burden on the operator. You can also. Further, since it is not necessary to increase the filtration capacity of the first filter, a sufficient amount of oil can be supplied to the printing press.
According to the fifth aspect of the present invention, since the clogging of the second filter can be reliably detected by the detecting means, it is possible to reliably prevent the dirty oil from being supplied to the printing press. .
Moreover, according to the invention which concerns on Claim 6, it can detect early that a lot of water mixed in oil.
Further, according to the invention according to claim 9, since a predetermined amount of oil discharged from the oil supply pump is supplied to the printing press, only a necessary and sufficient amount of oil is supplied to the printing press. In addition, the second filter can reliably send the oil from the oil supply pump, and the oil cleaning ability can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of a fueling device for a printing press according to the present invention, FIG. 2 (a) is a schematic diagram showing the configuration of the fueling device, and FIG. 1 (b) is II (b) in FIG. ) Is an enlarged sectional view, FIG. 3 is a circuit diagram of the oiling device, FIG. 4 is a block diagram of the oiling device of the printing press, and FIG. 5 is a front view showing the first filter in an exploded manner. FIG. 7 is an exploded front view of the second filter, and FIG. 7 is a partially cutaway front view of the galvanometer.

  In FIG. 1, a printing machine denoted by reference numeral 1 includes two sets of upper and lower printing units 2 and a paper discharge device 3. Each printing unit 2 includes a plate cylinder 4 on which a printing plate is mounted. A rubber cylinder 6 that prints an image transferred from the plate in contact with the printing plate on the printing paper by printing pressure with the impression cylinder 5 is respectively supported by cylinder bearings 7, 8, and 9 mounted on the left and right frames. Has been. Between the impression cylinder 5 of the printing unit 2 for the first color and the swing device of the sheet feeding device (both not shown), a transfer cylinder 10 is pivotally supported by a cylinder bearing 11. Between the impression cylinder 5 of the final printing unit 2 and the sprocket 13 supported by the cylinder bearing 15 of the paper discharge device 3, a transfer cylinder 12 is provided to be supported by the cylinder bearing 14.

  On the side of the printing unit 2, there are provided a number of rotating parts (not shown) such as driving gears, cams and levers for driving the printing cylinder groups 4, 5, 6, 10 and 12. On the side of the frame, a bowl-shaped oil bath 17 is located below the printing cylinder groups 4, 5, 6, 10, 12 and the rotating part and extends along the frame. A perforated oil receiver 18 having a plurality of through holes on the bottom surface is provided on the side of the frame of the printing unit 2 and above the rotating portion.

  Next, the fueling device 20 which is a feature of the present invention attached to the base will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 2 and FIG. 3, the fuel filler 20 is provided with a first filter 21, and the first filter 21 includes a first suction port 22, a second suction port 23, and a first filter. A discharge port 24 is provided. The first filter discharge port 24 is provided with a vacuum gauge 25 for measuring the clogged state of the first filter 21. The first suction port 22, the oil discharge port of the oil bath 17 of the printing press 1, Are connected by a first pipe 26.

  The first filter discharge port 24 of the first filter 21 is connected to the suction port 29 of the oil pump 28 by a second pipe 27, and the oil pump is provided between the discharge port 30 and the suction port 29 of the oil pump 28. A relief valve 31 is connected to keep the hydraulic pressure in 28 constant. The discharge port 30 of the oil pump 28 is connected to a port 33 of a distributor 32 provided in the vicinity of the oil pump 28 by a pipe 34 c, and the third pipe 34 includes pipes 34 a, 34 b, 34 c and a distributor 32. The oil supplied from the oil supply pump 28 is distributed to the printing machine 1 and the second filter 40. The port 33 of the distributor 32 and each of the cylinder bearings 7, 8, 9, 11, 14, 15 are connected by a pipe 34 a and a pipe group 37, and the port 33 of the distributor 32 and each perforated oil receiver 18 are connected to each other. Are connected by a pipe 34 a and a pipe group 38. An orifice 39, which is a flow rate adjusting means for limiting the flow rate of oil supplied from the oil supply pump 28 to the printing press 1 so as not to exceed a predetermined amount, is disposed in the pipe 34a. The orifice 39 may be a throttle valve. In short, any orifice that controls the flow rate of oil supplied from the oil supply pump 28 to the printing press 1 so as not to exceed a predetermined amount may be used.

  The second filter suction port 41 of the second filter 40 is connected to the pipe 34b, and the oil discharged from the discharge port 30 of the oil supply pump 28 is distributed to the second filter 40 and the printing press 1 by the distributor 32. The The second filter discharge port 42 of the second filter 40 is connected to the second suction port 23 of the first filter 21 by a fourth pipe 43, and the fourth pipe 43 is connected to the discharge port 42 of the second filter 40. A galvanometer 44 is provided as detection means for detecting an abnormality in the flow rate of oil discharged to the fourth pipe 43.

  In FIG. 4, 46 is a print start button, 47, 48 and 49 are monitors, alarm devices, and warning lamps as notification means. When an abnormality is detected by the galvanometer 44, the contents of the abnormality are displayed on the monitor 47. At the same time, an alarm is issued by the alarm device 48 and a warning lamp 49 is lit. Reference numeral 50 denotes a motor driver, which performs driving / stopping of driving of the printer motor 51 for driving the printing press 1 and switching of driving speed based on a command from the control device 52, and an abnormality is detected by the galvanometer 44. And the drive of this machine motor 51 is stopped. Further, when an abnormality is detected by the galvanometer 44, the control device 52 also stops the oil supply operation of the oil supply pump 28. Further, when an abnormality is detected by the galvanometer 44, the control device 52 controls the motor driver 50 so that the printer motor 51 is not driven even when the print start button 46 is operated.

Next, the structure of the first filter 21 will be described with reference to FIG.
In the figure, reference numeral 55 denotes a housing formed in a bottomed cylindrical shape. The first filter discharge port 24 is provided at the center of the bottom, and the first suction port 22 and the second suction port 23 are provided at the outer periphery of the bottom. A support column 56 is erected at the center of the bottom, and a screw hole 56 a having an open upper end is screwed to the top of the support column 56. 57 is a suction filter element formed in a cylindrical shape whose peripheral surface is made of mesh, 58 is a packing, 59 is a retainer spring, 60 is a cap with an opening in the center, 61 is a seal, and 62 is a T-shape. It is the bolt formed in the shape.

  In such a configuration, by inserting the suction filter element 57 from the upper opening of the housing 55, the discharge port 24 is surrounded by the suction filter element 57, and the first and second suction ports 22, 23 are connected to the suction filter element 57. It is positioned outside the suction filter element 57 without being surrounded by. Next, after the packing 58 is placed on the open end of the housing 55 and the retainer spring 59 is placed on the suction filter element 57, the cap 60 is placed on the packing 58. The seal 61 is placed in the opening 60 a of the cap 60, the bolt 62 is inserted from the opening 60 a of the cap 60, and the bolt 62 is screwed into the screw hole 56 a of the support column 56 of the housing, thereby The suction filter element 57 is pressed against the bottom of the housing 55 by force and fixed.

Next, the structure of the second filter 40 will be described with reference to FIG.
In the figure, reference numeral 65 denotes a housing having a bottomed cylindrical shape. A boss 65a is erected at the center of the bottom, and the boss 65a is provided with a screw hole 65b communicating with the second filter suction port 41. In addition, a second filter discharge port 42 is provided in the peripheral portion of the bottom. Reference numeral 66 denotes a filter element formed in a columnar shape having a central hole 66a. The filter element 66 absorbs wear powder and the like, which are small-sized impurities that cannot be filtered by the above-described suction filter 57, and water. 67 is a packing, 68 is a cap having an opening in the center, and 69 is a seal. Reference numeral 70 denotes a bolt formed in a T-shape, and a screw portion 70a formed at the tip portion is provided with a hollow portion 70b, and a part of the peripheral portion of the bolt 70 communicates with the hollow portion 70b. An oil outlet hole 70c is provided.

  In such a configuration, the filter element 66 is inserted from the upper opening of the housing 65, and the center hole 66a of the filter element 66 is engaged with the boss 65a, whereby the center hole 66a and the screw hole 65b of the housing 65 communicate with each other. The second filter discharge port 42 is covered by the filter element 66. Next, after the packing 67 is placed on the opening end of the housing 65 and the cap 68 is placed on the packing 67, the seal 69 is placed on the opening 68 a of the cap 68, and the bolt 70 is inserted from the opening 68 a of the cap 68. The filter element 66 is fixed in the housing 65 so as to be pressed against the cap 68 by being screwed into the screw hole 65 a of the housing 65. In this state, the second filter suction port 41 communicates with the hollow portion 70b of the bolt 70, and communicates via the hollow portion 70b, the center hole 66a of the filter element 66, and the oil outlet port 70c.

Next, the structure of the galvanometer 44 is demonstrated using FIG.
In the container denoted by reference numeral 72 in the figure, an oil introduction port 73 for introducing oil discharged from the second filter discharge port 42 of the second filter 40 is provided in the upper portion, and an oil outlet port 74 for extracting oil is provided in the lower portion. The oil that is provided and led out from the oil lead-out port 74 is sent to the first filter suction port 23 of the first filter 21. In the container 72, a float 75 as a detection target supported so as to resist the flow of oil by a compression coil spring 76 as an elastic member is accommodated. A sensor 77 for detection is provided. This sensor 77 has a built-in switch (not shown) that is turned on when the float 75 passes the sensor 77. This switch is turned off when the float 75 passes the sensor 77 again.

Next, the fueling operation in the fueling device of the printing press configured as described above will be described.
When oil to be supplied is put in the oil bath 17 in advance and the print start button 46 is turned ON, the controller 52 drives the oil supply pump 28 and outputs a print drive command to the motor driver 50, and this machine motor 51 is driven and the printing press 1 starts printing. When the oil pump 28 is driven, the oil in the oil bath 17 is taken into the first filter 21 from the first suction port 22 of the first filter 21 via the first pipe 26, and is sucked by the suction filter 57 of the first filter 21. It is filtered and discharged from the first filter discharge port 24 to the second pipe 27. The oil discharged to the second pipe 27 is sucked from the suction port 29 of the oil supply pump 28, discharged from the discharge port 30 to the pipe 34 c, and then distributed to the pipes 34 a and 34 b by the distributor 32. At this time, since the orifice 39 is provided in one of the pipes 34a, the flow rate of oil to the pipe 34a is limited so as not to exceed a predetermined amount. Is maintained at a predetermined amount. Accordingly, since a predetermined amount of oil discharged from the oil supply pump 28 is supplied to the printing press 1, not only the necessary and sufficient amount of oil is supplied to the printing press but also the oil from the oil supply pump 28. Can be reliably sent to the second filter 40, and the oil cleaning ability can be improved.

  Of the oil discharged to the pipe 34 a, the oil supplied to the cylinder bearings 7, 8, 9, 11, 14, and 15 through the pipe group 37 is lubricated and then transmitted to the oil bath 17 through the frame and the like. Reduced. Of the oil discharged to the pipe 34a, the oil discharged to the perforated oil receiver 18 through the pipe group 38 is transmitted through the through holes of the perforated oil receiver 18 as gears, cams, levers, etc. as rotating parts. After being dropped and lubricated, it is returned to the oil bath 17.

  On the other hand, the oil distributed from the distributor 32 to the other pipe 34 b is taken into the second filter 40 from the second filter suction port 41 of the second filter 40 and mixed into the oil by the filter element 66 of the second filter 40. Moisture and wear powder that has been absorbed are absorbed and cleaned, and the cleaned oil is discharged from the second filter discharge port 42 to the fourth pipe 43. When the oil discharged to the fourth pipe 43 is introduced into the container 72 from the oil introduction port 73 of the galvanometer 44, as shown by the solid line in FIG. When the float 75 passes through the sensor 77, the switch inside the sensor 77 is turned on. The oil led out from the oil lead-out port 74 of the galvanometer 44 is taken into the first filter 21 from the second suction port 23 of the first filter 21.

  Thus, not only the oil after lubrication received in the oil bath 17 is filtered by the first filter 21, but also a part of the oil filtered by the first filter 21 is supplied to the second high-cleaning capacity. By cleaning the filter 40 and circulating it again through the first filter 21, sufficiently clean oil can be supplied to the body bearing and the other base rotating part. In addition, since the water mixed with oil is absorbed in the second filter 40, if a large amount of water is mixed in the oil for some reason, the second filter 40 is clogged exceeding the allowable water absorption amount. The clogging can be detected by the current detector 44, and it can be stopped at an early stage from continuing to send the oil mixed with water to the printing press 1, and the components of the printing press 1 are damaged or rust is generated. Can be prevented.

  Moreover, an oil supply pump 28 for supplying oil from the oil supply device 20 to the printing press 1 is also used as a circulation pump without providing a dedicated oil supply pump for circulating the oil in the oil bath through the filter. Is one. For this reason, while becoming the compact structure which can install the oil supply apparatus 20 in a narrow space, manufacturing cost can also be reduced. Further, not only the number of check points during maintenance is reduced, but when oil is contaminated, there are few factors that can cause it, so the burden on the operator can be reduced. In addition, since the second filter 40 having a high cleaning capacity is provided, it is not necessary to increase the filtering capacity of the first filter 21, so that the amount of oil discharged from the first filter 21 does not decrease and is sufficient. A sufficient amount of oil can be supplied to the printing press 1.

  Here, when the second filter 40 is clogged or the like and the amount of oil discharged from the second filter 40 to the fourth pipe 43 is less than a predetermined amount, the float 75 of the galvanometer 44 is compressed by the compression coil spring. Since the elastic force of 76 moves upward in FIG. 7, the float 75 passes through the sensor 77 again, and at this time, the switch inside the sensor 77 is turned off. As described above, when an abnormality in the flow rate of the oil discharged from the second filter 40 is detected by the galvanometer 44, the control device 52 instructs the motor driver 50 to stop the rotation of the motor 51 of the machine. In order to output, the printing press 1 stops, and the oil supply operation of the oil supply pump 28 also stops. As described above, since the clogging of the second filter 40 can be reliably detected by the galvanometer 44, it is possible to reliably prevent the dirty oil from being supplied to the printing press 1.

  At the same time, the contents of the abnormality are displayed on the monitor 47, the alarm is activated by the alarm device 48, and the warning lamp 49 is lit. Therefore, the operator loosens the screw 70 and loosens the filter element 66 in FIG. Exchange. Thus, when the cleaning capability of the second filter 40 is reduced, the filter element 66 can be replaced, which is economical. Further, if the filter element 66 is not replaced, the galvanometer 44 is maintained in the OFF state, and the printing press 1 cannot be operated. In other words, when the printing press 1 is in operation, the filter element 66 is functioning normally, so that a state where clean oil is always supplied to the printing press 1 is guaranteed.

  In addition, when the first filter 21 is clogged or the like, the vacuum gauge 25 measures that the amount of oil discharged from the first filter 21 to the second pipe 27 is reduced. The driving of the oil supply pump 28 and the printing press 1 is stopped, the screw 62 is loosened in FIG. 5, and the suction filter 57 can be cleaned and reused, which is economical.

  8 and 9 show a second embodiment of the present invention, FIG. 8 is a schematic diagram showing the configuration of a fueling device, and FIG. 9 is a circuit diagram.

  In the second embodiment, the oil cleaned by the second filter 40 is directly sucked into the oil supply pump 28 via the second pipe 27 without passing through the first filter 21. In other words, the second filter discharge port 42 of the second filter 40 is connected to the second pipe 27 via the galvanometer 44. In the second embodiment, the fourth pipe 43 and the first filter are connected. 21 is not provided with the second suction port 23.

  In such a configuration, the oil cleaned by the second filter 40 is discharged from the second filter discharge port 42 to the galvanometer 44, discharged to the second pipe 27 through the galvanometer 44, and the oil supply pump 28. It is sucked into the suction port 29. The oil sucked into the oil supply pump 28 is discharged from the discharge port 30 to the flow divider 32, and is divided into two pipes 34a and 34b by the flow divider 32, and the oil divided into one third pipe 34a is the printing press. The oil supplied to 1 and divided into the other pipe 34 b is sucked into the second filter 40 and circulates between the oil supply pump 28.

It is a schematic diagram which shows the structure of the oil supply apparatus of the printing press which concerns on this invention. FIG. 4A is a schematic diagram showing the configuration of a fueling device in a fueling device for a printing press according to the present invention, and FIG. 4B is an enlarged cross-sectional view showing a portion II (b) in FIG. is there. It is a circuit diagram of the oil supply apparatus in the oil supply apparatus of the printing press which concerns on this invention. It is a block diagram of the oil supply apparatus of the printing press which concerns on this invention. It is a front view which decomposes | disassembles and shows the 1st filter in the oil supply apparatus of the printing press which concerns on this invention. It is a front view which decomposes | disassembles and shows the 2nd filter in the oil supply apparatus of the printing press which concerns on this invention. It is a front view which partially fractures and shows the galvanometer in the oil supply apparatus of the printing press which concerns on this invention. It is a schematic diagram which shows the structure of 2nd Embodiment of the oil supply apparatus in the oil supply apparatus of the printing press which concerns on this invention. It is a circuit diagram of 2nd Embodiment of the oil supply apparatus in the oil supply apparatus of the printing press which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Printing machine, 6, 7, 8, 11, 14, 15 ... Body bearing, 17 ... Oil bath, 18 ... Perforated oil receptacle, 20 ... Oil supply apparatus, 21 ... 1st filter, 22 ... 1st inlet port, DESCRIPTION OF SYMBOLS 23 ... 2nd suction port, 24 ... 1st filter discharge port, 25 ... Vacuum gauge, 26 ... 1st piping, 27 ... 2nd piping, 28 ... Oil supply pump, 31 ... Relief valve, 32 ... Shunt, 34a, 34b ... 3rd piping, 40 ... 2nd filter, 41 ... 2nd filter suction port, 42 ... 2nd filter discharge port, 43 ... 4th piping, 44 ... Current detector, 46 ... Print start button, 47 ... Monitor, 48 DESCRIPTION OF SYMBOLS ... Alarm device, 49 ... Alarm lamp, 51 ... This machine motor, 52 ... Control apparatus, 57 ... Suction filter, 66 ... Filter element, 75 ... Float, 76 ... Compression coil spring, 77 ... Sensor.

Claims (9)

In the oiling device of a printing machine, which cleans the oil of the printing machine with a filter and supplies it to the printing machine with an oil pump
The filter has a first filter that cleans oil and a second filter that cleans oil cleaned by the first filter;
The oil pump is provided to suck in oil cleaned by the first filter and supply the oil to the second filter and a printing press;
An oil supply device for a printing press, wherein the second filter and the oil supply pump are connected so that oil cleaned by the second filter is sucked by the oil supply pump. The fueling device for a printing press according to claim 1,
An oil supply apparatus for a printing press, wherein the second filter and the first filter are connected so that the oil cleaned by the second filter can be sent to the first filter. The fueling device for a printing press according to claim 2,
Connecting the first filter and the suction port of the oil pump;
Connecting the discharge port of the oil pump and the second filter and the printing press;
The first filter is connected to an oil bath of the printing press and the second filter, and oil from the oil bath of the printing press and oil cleaned by the second filter are taken into the first filter. Refueling device for printing press. The fueling device for a printing press according to claim 3,
The first filter includes first and second suction ports and a first filter discharge port,
The second filter includes a second filter suction port and a second filter discharge port,
A first pipe connecting the first suction port of the first filter and an oil bath of a printing press;
A second pipe connecting the first filter discharge port of the first filter and the suction port of the oil pump;
A third pipe for connecting the discharge port of the oil supply pump to the second filter suction port of the second filter and the printing machine, and distributing oil discharged from the discharge port of the oil supply pump to the second filter and the printing machine. When,
An oil supply device for a printing press comprising a second filter discharge port of the second filter and a fourth pipe connected to the second suction port of the first filter. The fueling device for a printing press according to claim 1,
Detecting means for detecting an abnormality in a flow rate of oil discharged from the second filter;
An oil supply device for a printing press, comprising: a control device that disables the operation of the printing press by a detection signal from the detection means. The fueling device for a printing press according to claim 5,
The oil supply device for a printing press, wherein the second filter absorbs moisture mixed in the oil. The fueling device for a printing press according to claim 5,
An oil supply apparatus for a printing press, characterized in that the detection means includes a detected object supported by an elastic member so as to resist the flow of oil and a sensor for detecting the detected object. The fueling device for a printing press according to claim 5,
An oil supply device for a printing press, comprising a notification means for notifying a detection result of the detection means. The fueling device for a printing press according to claim 1,
An oil supply apparatus for a printing press, comprising a flow rate adjusting means for limiting a flow rate of oil supplied from the oil supply pump to the printing press so as not to exceed a predetermined amount.

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