LUBRICATING DEVICE, PRINTER, LUBRICATING METHOD, AND COMPUTER PROGRAM FOR LUBRICATION
An object is to supply a fixed amount of oil determined in advance. In the present invention, a lubricating device that supplies oil to each sliding device of a printing machine includes a lubricating section and a metered valve. The lubricating section ejects oil in an oil reservoir section into a piping when lubrication is performed. The metered valve is configured to eject oil accumulated in an ejection side cylinder chamber from an ejection opening by oil pressure from the oil ejected into the piping. The oil ejected into the piping is accumulated in a supply side cylinder chamber. When a lubricating pump is stopped and depressurized, the oil accumulated in the supply side cylinder chamber moves to the ejection side cylinder chamber.
1 . A lubricating device that supplies oil to each sliding device of a printing machine, comprising:
a lubricating unit that ejects oil from an oil reservoir into a piping when lubrication is performed; and
a metered valve that ejects a fixed amount of oil onto a sliding unit to be lubricated by oil pressure of the oil ejected into the piping.
2 . The lubricating device according to claim 1 , wherein the metered valve ejects the oil accumulated in an ejection side cylinder chamber from an ejection opening by the oil pressure of the oil ejected into the piping and the oil ejected into the piping is accumulated in a supply side cylinder chamber, and
when the lubricating unit is stopped and depressurized, the oil accumulated in the supply side cylinder chamber moves to the ejection side cylinder chamber.
3 . The lubricating device according to claim 1 , wherein, regarding the oil ejected into the piping from the lubricating unit, the oil ejected from the lubricating unit is distributed to a plurality of pipings by a distributor that distributes to sliding units to be lubricated, and the metered valve is provided on tips of the plurality of pipings on the sliding unit side.
4 . The lubricating device according to claim 1 , wherein a lubrication operation is controlled by an optimal lubrication time controlling device including:
an actual elapsed operation time counting unit that counts an actual elapsed operation time of the printing machine; and
a notification controlling unit that compares the actual elapsed operation time counted by the actual elapsed operation time counting unit and an optimal lubrication time set in advance and, when the actual elapsed operation time exceeds the optimal lubrication time, gives a notification that lubrication is required.
5 . The lubricating device according to claim 1 , wherein a lubrication operation is controlled by a forced lubrication controlling device including:
an actual elapsed operation time counting unit that counts an actual elapsed operation time of the printing machine; and
a notification controlling unit that compares the actual elapsed operation time counted by the actual elapsed operation time counting unit and a critical time set in advance and, when the actual elapsed operation time exceeds the critical time, forces lubrication to be performed after the printing machine stops printing.
6 . The lubricating device according to any one of claim 1 comprising a lubrication controlling device including the optimal lubrication time controlling device and the forced lubrication controlling device.
7 . The lubricating device according to claim 1 , wherein the metered valve is provided with a metered valve pressure sensor that detects whether the metered valve is operating normally, and
a metered valve notifying unit is provided that compares a pressure value based on a signal from the metered valve pressure sensor and a metered valve pressure threshold set in advance, and gives a notification when the pressure value based on the signal from the metered valve pressure sensor is less than the metered valve pressure threshold.
8 . The lubricating device according to claim 1 , wherein the piping is provided with a piping pressure sensor that measures pressure within the piping, and
a notifying unit is provided that compares a pressure value based on a signal from the piping pressure sensor and a piping pressure threshold set in advance, and gives a notification when the pressure value based on the signal from the piping pressure sensor is less than the piping pressure threshold.
9 . A printing machine including a paper feeding unit, a printing unit, and a paper discharging unit, the printing machine comprising a lubricating device according to any one of claim 1 that lubricates the sliding units of the printing machine.
10 . A lubricating method comprising the steps of:
counting an actual elapsed operation time during which a printing machine is printing;
comparing an actual elapsed printing time and an optimal lubrication time set in advance; and
giving a notification when the actual elapsed printing time exceeds the optimal lubrication time.
11 . A lubricating method comprising the steps of:
counting an actual elapsed operation time during which a printing machine is printing;
comparing an actual elapsed printing time and a critical time set in advance; and
forcibly supplying a fixed amount of oil after the printing machine stops printing, when the actual elapsed printing time exceeds the critical time.
12 . A lubricating method according to claim 10 , wherein, when the actual elapsed printing time exceeds a critical time, a fixed amount of oil is forcibly supplied after the printing machine stops printing.
13 . A computer program allowing a computer to execute a lubricating method according to claim 10 .