JPH06108352A - Lubrication of circular knitting machine and lubrication apparatus - Google Patents

Abstract

PURPOSE:To minimize the loss of lubricating oil, to extend the lubricating oil all over the necessary part of a circular knitting machine without contaminating the surroundings with the lubricating oil, to prevent the uneven lubrication and to prolong the life of the machine. CONSTITUTION:When the operation conditions of a circular knitting machine are inputted by an operation condition inputting means 30, the discharge of a pump for one cycle is calculated by a discharge calculation means 33 and set to a discharge setting means 21, the discharging rate of the pump 12 for one discharging cycle is calculated by a discharging rate calculation means 34 and set to a discharging rate setting means 22, the intermittent driving time of the pump 12 is calculated by an intermittent driving time calculation means 35 and the result is set to an intermittent driving time setting means 24. A start signal is transmitted from a start signal transmission means 25 for each intermittent driving time and the pump 12 is driven by a pump-driving means 23. A proper amount of lubricating oil is supplied from a nozzle 13 to a cam groove 4 of a cam 5 during at least one revolution of a row of needles of a circular knitting machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubrication method and a lubrication device for a circular knitting machine for knitting shirts, socks, etc. by advancing and retracting while rotating a large number of needles arranged in a row.

[0002]

2. Description of the Related Art Generally, as a circular knitting machine, for example, as shown in FIGS.
A rotary shaft 2 provided inside the needle row to engage each needle 1 so as to move forward and backward and rotate to rotate the needle row circumferentially; and each needle 1 provided outside the needle row. A drum-shaped cam 5 having a cam groove 4 for advancing and retracting each of the needles 1 by engaging a protruding portion 3 protruding from the cam holder, and a cam holder provided outside the cam 5 for fixing the cam 5. 6 is provided, and a large number of needles 1 lined up on the circumference are rotated and moved forward and backward to knit a yarn 8a supplied from a yarn supply source 8 on the upper part of the machine stand 7 to hollow the rotary shaft 2. The cylindrical knitted product 9 is discharged from the portion 2a. Conventionally, for the lubrication of such a circular knitting machine, for example, a method has been used in which lubricating oil is continuously supplied to the cam groove 4 of the cam 5 in the form of mist.

[0003]

By the way, in the above-mentioned conventional lubrication method using the mist of the circular knitting machine, the lubricating performance is good, but most of the lubricating oil scatters to other than the lubrication point, and there is much waste. In addition to being inefficient, the product may become dirty or stain the surroundings due to scattering.
There was a problem of environmental pollution. Further, since a compressor for supplying pressured air for mist generation is required, there is a problem that the equipment cost and the cost increase accordingly.

In order to solve this, there is a method in which the cam holder 6 is provided with a nozzle for discharging lubricating oil into the cam groove 4 of the cam 5, and the lubricating oil is intermittently supplied from this nozzle. Therefore, the waste of the lubricating oil is reduced, but the lubricating oil may not spread to all of the protrusions 3 of the large number of needles 1 passing through the cam groove 4, resulting in uneven lubrication, which causes problems such as seizure of the machine. However, there is a problem in that the durability is deteriorated.

Therefore, an object of the present invention is to reduce the waste of the lubricating oil as much as possible, and further to make it possible to evenly spread the lubricating oil to necessary places without contaminating the surroundings with the lubricating oil. It is an object to provide a lubricating method and a lubricating device for a circular knitting machine, which prevent the above-mentioned problems and ensure the durability of the machine.

[0006]

A method of lubricating a circular knitting machine according to the present invention for solving the above-mentioned problems is such that a lubricating oil is discharged into a cam groove of a cam of the circular knitting machine to lubricate the portion. In addition, the lubricating oil is discharged while the needle row rotates at least once.

In the circular knitting machine lubricating apparatus of the present invention, a nozzle provided in the cam holder for discharging lubricating oil to the cam groove of the cam, a pump for supplying lubricating oil to the nozzle, and the needle row for at least one revolution. And a drive control unit for performing intermittent drive control of the pump so that the lubricating oil is discharged from the nozzle during the operation.

Then, the drive control section sets the discharge amount setting means for setting the discharge amount of the pump per discharge, and the discharge for setting the discharge speed of the pump per discharge amount set in the discharge amount setting means. A speed setting means, a pump driving means that starts when a start signal is received, stops when a stop signal is received, and drives the pump so that the discharge amount and discharge speed are set as described above, and an intermittent time of the pump is set. It is effective to provide an intermittent time setting means, a start signal sending means for sending a start signal for each intermittent time, and a stop signal sending means for sending a stop signal after the end of one discharge.

Further, the drive control unit controls the operation requirement input means for inputting the operation requirement of the circular knitting machine and the pump requirement per operation based on the operation requirement set in the discharge amount setting means and input in the operation requirement input means. A discharge amount calculating means for calculating a discharge amount, a discharge speed calculating means for calculating a discharge speed of the pump per one dose based on the operation requirement set in the discharge speed setting means and inputted to the operation requirement input means, and intermittently. It is effective to include an intermittent time calculating means for calculating the intermittent time of the pump based on the operating requirements set in the time setting means and input in the operating requirement input means.

Further, the drive control section performs the above-mentioned one rotation based on the rotation speed detecting means for detecting the rotation speed of the needle row of the circular knitting machine and the rotation speed set by the discharge speed setting means and detected by the rotation speed detecting means. It is effective to provide a discharge speed calculation means for calculating the discharge speed of the pump per amount.

Further, the drive control section includes pump driving means for driving the pump that starts when there is a start signal and stops when there is a stop signal, and intermittent time setting means for setting an intermittent time of the pump. Starting signal sending means for sending a starting signal at every intermittent time, rotational position detecting means for detecting the rotational position of the needle row of the circular knitting machine, and sending a stop signal based on the position information detected by the rotational position detecting means It is effective to have a stop signal transmitting means.

[0012]

According to this means, the lubricating oil is discharged to the cam groove while the needle row rotates at least once, and the lubricating oil is supplied to all the protrusions of the many needles passing through the cam groove on the circumference. Therefore, it is possible to prevent the situation where the lubricating oil spreads well and uneven lubrication occurs.

If the drive control unit sets the discharge amount, the discharge speed, and the intermittent time, the pump drive means automatically drives the pump to the set discharge amount and discharge speed. Therefore, the lubricating oil can be reliably supplied to the cam groove.

Further, by inputting the operating requirements of the circular knitting machine and calculating the discharge amount, the discharging speed, and the intermittent time, proper lubrication is automatically performed according to the operating requirements of the circular knitting machine.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lubrication method and device for a circular knitting machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The lubrication method for the circular knitting machine is realized by the lubricating device for the circular knitting machine according to the embodiment.

The circular knitting machine in which the lubricating device according to the embodiment is used is, as described above, provided with a large number of needles 1 arranged on the circumference and inside the needle row, as shown in FIGS. 5 to 7. Each of the needles 1 is engaged with the needle 1 so as to be movable back and forth, and rotates to rotate the needle row along the circumference thereof.
And a protruding portion 3 provided outside the needle row and protruding from each needle 1.
Is provided with a drum-shaped cam 5 having a cam groove 4 for advancing and retracting each needle 1 when the needle row rotates, and a cam holder 6 provided outside the cam 5 for fixing the cam 5. , A plurality of needles 1 arranged in a row on the circumference are moved forward and backward while knitting a yarn supplied from a yarn supply source 8 on the upper part of the machine stand 7, and a cylindrical circular knit from the hollow portion of the rotary shaft 2. I try to discharge the product. The cam groove 4 is provided in one line, or is provided in several lines in order to make the protrusion 3 move differently for each rotation.

1 and 2 show a lubricating device according to the first embodiment. The lubricating device includes a tank 11 that stores lubricating oil and a pump 12 that sucks and discharges the lubricating oil in the tank 11. The pump 12 is, for example, a motor-driven plunger pump of variable discharge amount and discharge speed, and a plurality of pump pumps (six pumps in the embodiment) are connected in series. A nozzle 13 can be connected to each pump 12 via a pipe. The nozzle 13 is provided in the cam holder 6 so as to discharge the lubricating oil to the cam groove 4 of the cam 5. For example, one nozzle 13 is attached to one line of the cam groove 4. The nozzles 13 are prepared in the same number as the cam grooves 4 of the cam 5 of the circular knitting machine, and are connected to different pumps 12, respectively. In the embodiment, up to six nozzles 13 can be attached. The pump 12 is supported by a control case 14 mounted on the top of the tank 11.

Reference numeral 20 is a drive control unit for the pump 12 provided in the control case 14. The drive control unit 20 controls the pump 12 intermittently so that the lubricating oil is discharged from the nozzle 13 while the needle row rotates at least once. Specifically, as shown in FIG. 1, the drive control unit 20 sets the discharge amount setting means 2 for setting the discharge amount of the pump 12 per time.
1 and the discharge speed setting means 22 for setting the discharge speed of the pump 12 per one time set in the discharge quantity setting means 21.
A pump drive means 23 having, for example, a motor for starting the pump 12 when there is a start signal, stopping when there is a stop signal, and driving the pump 12 so that the discharge amount and the discharge speed are set as described above; An intermittent time setting means 24 for setting an intermittent time, a starting signal sending means 25 for sending a starting signal for each intermittent time, and a stop signal sending means 26 for sending a stop signal after one discharge is completed. .

Further, the drive control section 20 comprises an operation requirement input means 30 for inputting the operation requirement of the circular knitting machine. As shown in FIG. 2, the operation requirement input means 30 is provided on the front surface of the control case 14 and is provided on the rotary shaft 2 of the circular knitting machine.
Input key 31 for inputting the number of rotations and the diameter of the circular knitting machine
Similarly, the display unit 32 is provided on the front surface of the control case 14 and indicates an input item or the like when the input key 31 is input. Further, as shown in FIG. 1, the drive control unit 20 calculates the discharge amount of the pump 12 per one time based on the operation requirement set in the discharge amount setting means 21 and input to the operation requirement input means 30. The discharge amount calculation means 33 and the operation requirement input means 30 set in the discharge speed setting means 22.
1 pump per dose based on the operating requirements entered in
The discharge speed calculation means 34 for calculating the discharge speed of No. 2 and the operation requirement input means 30 set in the intermittent time setting means 24.
And an intermittent time calculating means 35 for calculating the intermittent time of the pump 12 based on the operating requirements input to the. The discharge speed calculation means 34 calculates the discharge speed so that the lubricating oil is discharged from the nozzle 13 while the needle row rotates at least once. Each function of the drive control unit 20 described above is realized by a built-in CPU.

Therefore, according to the lubrication device for a circular knitting machine according to this embodiment, the rotational speed of the rotary shaft 2 of the circular knitting machine and the diameter of the circular knitting machine, which are the operating requirements of the circular knitting machine, are previously set.
Input is performed with the input keys 31 while following the instructions on the display unit 32. As a result, the appropriate discharge amount of the pump 12 per one time is calculated by the discharge amount calculation means 33 and set in the discharge amount setting means 21. In addition, the discharge speed calculation means 34 calculates the discharge speed of the pump 12 per dose and sets it in the discharge speed setting means 22. Further, the intermittent time calculating means 35 calculates the intermittent time of the pump 12,
It is set in the intermittent time setting means 24.

Then, a starting signal is sent from the starting signal sending means 25 at each set intermittent time, and the pump driving means 23 drives the pump 12 so that the set discharge amount and discharge speed are set by the start signal. To do. Then, when this one-time discharge is completed, a stop signal is sent from the stop signal sending means 26 to stop the pump driving means 23, and the pump 12 is paused until there is a start signal after the next intermittent time.

When the pump 12 is driven, the pump 12
From this, a proper amount of lubricating oil is discharged at a set speed, and is discharged from the nozzle 13 into the cam groove 4 of the cam 5.
In this case, this discharge speed is set so that the lubricating oil is discharged while the needle row of the circular knitting machine makes at least one revolution, so that the lubricating oil passes through a large number of needles passing through the circumferential cam groove 4. The lubricating oil will be supplied to all of the protrusions 3 of 1.
Therefore, it is possible to prevent the situation where the lubricating oil spreads well and uneven lubrication occurs. In addition, since the discharge amount and the intermittent time are set appropriately, it does not scatter around and become contaminated, the waste of lubricating oil is reduced compared to the continuous discharge type, and a small amount of sufficient lubricating oil is required. To ensure the durability of the machine. In addition, the operating requirements of the circular knitting machine are input to calculate the discharge amount, the discharging speed, and the intermittent time, and the discharge amount, the discharging speed, and the intermittent time are set. Lubrication is automatically performed, and the lubricating oil is surely supplied to the cam groove 4.

FIG. 3 shows a lubricating device for a circular knitting machine according to the second embodiment. It has a pump 12 and a nozzle 13 similar to those described above. The drive control unit 40 of the pump 12 intermittently controls the pump 12 so that the lubricating oil is discharged from the nozzle 13 while the needle row makes at least one rotation. Specifically, as shown in FIG. 3, the drive control unit 40 includes a discharge amount setting means 41 for manually setting the discharge amount of the pump 12 per discharge, and a discharge amount setting means 41.
The discharge speed setting means 42 for setting the discharge speed of the pump 12 per set amount set to the above, and the discharge speed setting means 42 that starts when there is a start signal and stops when there is a stop signal Pump driving means 43 having, for example, a motor to drive the pump 12 to reach the speed, intermittent time setting means 44 in which the intermittent time of the pump 12 is manually set, and start signal transmission for transmitting a start signal for each intermittent time It is provided with a means 45 and a stop signal sending means 46 for sending a stop signal after the end of one discharge.

Further, the drive control section 40 is based on the rotation speed detecting means 47 for detecting the rotation speed of the needle row of the circular knitting machine and the rotation speed detected by the rotation speed detecting means set in the discharge speed setting means 22. A discharge speed calculating means 48 for calculating the discharge speed of the pump 12 per one dose is provided. The discharge speed calculation means 48 has, for example, a detected rotation speed of 10R.
In the case of PM, the discharge speed is calculated so that the lubricating oil is discharged within 10 seconds when the needle row makes one rotation. Therefore, also in the second embodiment, the lubricating oil is supplied to all of the protrusions 3 of the plurality of needles 1 that pass through the cam grooves 4 on the circumference, so that the lubricating oil is well distributed. The situation that uneven lubrication occurs is prevented. In this case, since the rotation speed is actually measured to calculate the discharge speed, even if the rotation speed of the rotary shaft 2 is different, it is possible to automatically cope with this without manually resetting the rotation speed. Will get better.

FIG. 4 shows a lubricating device for a circular knitting machine according to the third embodiment. This is the same pump 1 as above
2 and a nozzle 13. The drive control unit 50 of the pump 12 controls the pump 12 so that the lubricating oil is discharged from the nozzle 13 while the needle row rotates at least once.
Is controlled intermittently. More specifically, as shown in FIG. 4, the drive control unit 50 sets the pump drive means 53 that drives the pump 12 that starts when there is a start signal and stops when there is a stop signal, and the intermittent time of the pump 12. The intermittent time setting means 54, the starting signal sending means 55 for sending a starting signal at each intermittent time, the rotational position detecting means 57 for detecting the rotational position of the needle row of the circular knitting machine, and the rotational position detecting means. Stop signal transmitting means 56 for transmitting a stop signal based on the position information. Stop signal sending means 56
For example, the stop signal is sent when the rotational position when the pump driving means 53 is driven reaches the position rotated by 360 degrees. Therefore, also in the third embodiment, while the needle row makes at least one revolution, the lubricating oil is discharged from the nozzle 13 and all of the protrusions 3 of the needles 1 passing through the cam grooves 4 on the circumference are discharged. Since the lubricating oil is supplied, it is possible to prevent the situation where the lubricating oil spreads well and uneven lubrication occurs. Further, since the rotational position of the rotary shaft is actually measured, even if the rotational speed of the rotary shaft is different, it is possible to automatically cope with this without manually resetting it, and the efficiency is improved accordingly.

In the above embodiment, the pump 12 is
Not only the plunger pump but also any type of pump such as a gear pump may be used. Further, the configuration of the drive control unit is not limited to the one described above and may be changed as appropriate.

[0027]

As described above, according to the lubricating method and the lubricating device for the circular knitting machine of the present invention, the lubricating oil is discharged to the cam groove while the needle row of the circular knitting machine makes at least one revolution. As a result, lubricating oil will be supplied to all of the protrusions of the many needles that pass through the cam grooves on the circumference, so that the lubricating oil can be evenly distributed to the necessary places without contaminating the surroundings with lubricating oil. It is possible to prevent the occurrence of uneven lubrication. In addition, since intermittent lubrication is performed, there is less waste of lubricating oil compared to the continuous discharge type, and there is an effect that a small amount of sufficient lubricating oil can be evenly supplied to necessary places and the durability of the machine can be secured. .

If the drive control unit sets the discharge amount, the discharge speed, and the intermittent time, the pump drive means automatically drives the pump to the set discharge amount and discharge speed. Therefore, the lubricating oil can be reliably supplied to the cam groove.

Further, by inputting the operating requirements of the circular knitting machine and calculating the discharge amount, the discharging speed, and the intermittent time, proper lubrication is automatically performed according to the operating requirements of the circular knitting machine.

Further, if the discharge speed is calculated by actually measuring the rotation speed, even if the rotation speed of the rotary shaft is different, it can be automatically coped with without manually resetting the rotation speed, and the efficiency is improved accordingly. Get better.

Furthermore, when the rotational position of the rotary shaft is actually measured, even if the rotational speed of the rotary shaft is different, it is possible to automatically cope with this without manually re-setting, and the efficiency is accordingly increased. Get better.

[Brief description of drawings]

FIG. 1 is a diagram showing a lubrication device for a circular knitting machine according to a first embodiment of the present invention.

FIG. 2 is a view showing the outer appearance of the lubricating device for the circular knitting machine according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a lubrication device for a circular knitting machine according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a lubricating device for a circular knitting machine according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing an example of a circular knitting machine to which an embodiment of the present invention is applied.

FIG. 6 is a longitudinal sectional view of a circular knitting machine to which an embodiment of the present invention is applied.

FIG. 7 is a cross-sectional view of a circular knitting machine to which an embodiment of the present invention is applied.

[Explanation of symbols]

 1 Needle 2 Rotating Shaft 3 Projection 4 Cam Groove 5 Cam 6 Cam Holder 11 Tank 12 Pump 13 Nozzle 14 Control Case 20, 40, 50 Drive Controller 21, 41 Discharge Amount Setting Means 22, 42 Discharge Speed Setting Means 23, 43, 53 pump driving means 24, 44, 54 intermittent time setting means 25, 45, 55 start signal sending means 26, 46, 56 stop signal sending means 30 operating requirement input means 31 input key 32 display section 33 discharge rate calculating means 34 discharge speed Calculation means 35 Intermittent time calculation means 47 Rotation speed detection means 48 Discharge speed calculation means 57 Rotation position detection means

Claims (6)

[Claims] 1. A plurality of needles arranged in a row on the circumference, and rotations in which the needles provided on the inner side of the needle row engage with each other so as to move forward and backward and rotate to rotate the needle row along the circumference. Shaft,
A drum-shaped cam having a cam groove that is provided outside the needle row and that engages with a protruding portion that protrudes from each needle to advance and retreat each needle when the needle row rotates, and the cam that is provided outside the cam In a method of lubricating a circular knitting machine having a fixed cam holder, lubricating oil is discharged to a cam groove of the cam so as to lubricate the portion, and the needle row is lubricated for at least one rotation. Lubrication method for circular knitting machines, characterized in that oil is discharged. 2. A plurality of needles arranged in a row on the circumference, and rotation for engaging and rotating the needles provided inside the needle row so as to move the needle row along the circumference. Shaft,
A drum-shaped cam having a cam groove that is provided outside the needle row and that engages with a protruding portion that protrudes from each needle to advance and retreat each needle when the needle row rotates, and the cam that is provided outside the cam In a lubricating device for lubricating a circular knitting machine having a fixed cam holder, a nozzle provided in the cam holder for discharging lubricating oil to the cam groove of the cam, a pump for supplying lubricating oil to the nozzle, and the needle row having at least one needle row. A lubrication device for a circular knitting machine, comprising: a drive control unit that intermittently drives and controls a pump so that lubricating oil is discharged from a nozzle while rotating. 3. The drive control unit comprises a discharge amount setting means for setting the discharge amount of the pump per discharge, and a discharge for setting the discharge speed of the pump per discharge amount set in the discharge amount setting means. A speed setting means, a pump driving means that starts when a start signal is received, stops when a stop signal is received, and drives the pump so that the discharge amount and discharge speed are set as described above, and an intermittent time of the pump is set. 3. An intermittent time setting means, a starting signal sending means for sending a starting signal for each intermittent time, and a stop signal sending means for sending a stop signal after the end of one discharge. Circular knitting machine lubricator. 4. The drive control unit of the pump for one time based on the operation requirement input means for inputting the operation requirement of the circular knitting machine and the operation requirement set in the discharge amount setting means and inputted in the operation requirement input means. A discharge amount calculating means for calculating a discharge amount, a discharge speed calculating means for calculating a discharge speed of the pump per one dose based on the operation requirement set in the discharge speed setting means and inputted to the operation requirement input means, and intermittently. 4. The lubrication device for a circular knitting machine according to claim 3, further comprising: intermittent time calculating means for calculating an intermittent time of the pump based on the operating requirement set in the time setting means and inputted in the operating requirement inputting means. 5. The drive control section performs the one-time rotation based on the rotation speed detection means for detecting the rotation speed of the needle row of the circular knitting machine, and the rotation speed set by the discharge speed setting means and detected by the rotation speed detection means. 4. A lubrication device for a circular knitting machine according to claim 3, further comprising a discharge speed calculation means for calculating a discharge speed of the pump per unit amount. 6. The drive control unit includes a pump drive means for driving a pump that starts when a start signal is received and stops when a stop signal is received, an intermittent time setting means for setting an intermittent time of the pump, and an intermittent operation. A start signal sending means for sending a start signal every time, a rotational position detecting means for detecting a rotational position of a needle row of a circular knitting machine, and a stop for sending a stop signal based on position information detected by the rotational position detecting means. 3. A lubrication device for a circular knitting machine according to claim 2, further comprising a signal sending means.