JP3013129B2 - Lubricating device for circular knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating device for a circular knitting machine for knitting a shirt, a sock or the like by rotating and moving a large number of needles arranged on a circumference.

[0002]

2. Description of the Related Art Generally, as a circular knitting machine, for example, as shown in FIGS. 5 to 7, a large number of needles 1 arranged on the circumference are arranged.
A rotating shaft 2 provided inside the needle row, and each needle 1 is engaged so as to advance and retreat, and rotates to rotate the needle row along the circumference; and a needle 1 provided outside the needle row. Drum-shaped cam 5 having a cam groove 4 for engaging and disengaging each needle 1 when the needle row is rotated by engagement of a protruding portion 3 protruding from the cam, and a cam holder provided outside the cam 5 and fixing the cam 5 6, a plurality of needles 1 arranged on the circumference are moved forward and backward while rotating, to knit a yarn 8a supplied from a yarn supply source 8 on the upper part of the machine base 7, and to hollow the rotary shaft 2. The cylindrical circular knit product 9 is discharged from the portion 2a. Conventionally, for lubrication of such a circular knitting machine, for example, a method of continuously supplying lubricating oil to the cam groove 4 of the cam 5 in the form of a mist has been used.

[0003]

The lubricating method using the mist of the conventional circular knitting machine described above has good lubricating performance, but most of the lubricating oil is scattered at places other than the lubricating point, resulting in much waste. And the efficiency is low, and the product gets dirty and the surroundings get dirty by scattering.
There was a problem of environmental pollution. Further, since a compressor for supplying the compressed air for generating the mist is required, there is a problem that the equipment cost increases and the cost increases accordingly.

In order to solve this problem, there is a method in which a nozzle for discharging lubricating oil is provided in the cam groove 4 of the cam 5 in the cam holder 6 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 reach all the protruding portions 3 of the large number of needles 1 passing through the cam groove 4, causing uneven lubrication, and hindering seizure of the machine. Is liable to occur, and there is a problem that durability is reduced.

[0005] Therefore, an object of the present invention is to minimize the waste of lubricating oil, and to evenly distribute the lubricating oil to necessary places without contaminating the surroundings with the lubricating oil. It is another object of the present invention to provide a lubricating device for a circular knitting machine , which prevents the occurrence of the above problem and ensures the durability of the machine.

[0006]

According to the present invention, there is provided a lubricating device for a circular knitting machine for solving the above-mentioned problems, in which lubricating oil is discharged into a cam groove of a cam of the circular knitting machine to lubricate the portion. Further, the lubricating oil is discharged during at least one rotation of the needle row.

The lubricating apparatus for a circular knitting machine according to the present invention comprises: a nozzle provided on a cam holder for discharging lubricating oil into a cam groove of the cam; a pump for supplying lubricating oil to the nozzle; And a drive control unit for intermittently controlling the pump so that the lubricating oil is discharged from the nozzles.

The drive control section includes a discharge amount setting means for setting the discharge amount of the pump per one time, and a discharge amount for setting the discharge speed of the pump per one time set in the discharge amount setting means. Speed setting means, pump driving means for starting when there is a start signal, stopping when there is a stop signal, and driving the pump so as to have the set discharge amount and discharge speed, and intermittent time of the pump is set. It is effective to have intermittent time setting means, start signal sending means for sending a start signal every intermittent time, and stop signal sending means for sending a stop signal after one ejection.

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

Further, the drive control section includes a rotation number detecting means for detecting the rotation number of the needle row of the circular knitting machine, and the one-time rotation based on the rotation number set in the discharge speed setting means and detected by the rotation number detecting means. It is effective to have a discharge speed calculating means for calculating the discharge speed of the pump per amount.

Further, the drive control section includes a pump driving means for driving a pump which 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, Starting signal sending means for sending a starting signal at every intermittent time, rotating position detecting means for detecting the rotating position of the needle row of the circular knitting machine, and sending a stop signal based on the position information detected by the rotating position detecting means. It is effective to provide a stop signal sending means.

[0012]

According to this means, the lubricating oil is discharged into 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 a situation in which the lubricating oil spreads well and uneven lubrication occurs.

If the drive control section 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, lubricating oil can be reliably supplied to the cam groove.

Further, by inputting the operation requirements of the circular knitting machine and calculating the discharge amount, the discharge speed, and the intermittent time, appropriate lubrication in accordance with the operation requirements of the circular knitting machine is automatically performed.

[0015]

EXAMPLES Hereinafter, that describes a lubricating apparatus for a circular knitting machine according to an embodiment of the present invention with reference to the accompanying drawings.

A 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. And a spline-shaped rotary shaft 2 in which the needles 1 are engaged so as to be able to advance and retreat and rotate to rotate the needle rows along the circumference.
And a protruding portion 3 provided outside the needle row and protruding from each needle 1
And a drum-shaped cam 5 having a cam groove 4 for moving each needle 1 forward and backward when the needle row rotates, and a cam holder 6 provided outside the cam 5 and fixing the cam 5. A number of needles 1 arranged on the circumference are moved forward and backward while rotating, to knit a yarn supplied from a yarn supply source 8 at an upper part of a machine base 7, and to form a cylindrical circular knit from a hollow portion of a rotary shaft 2. The product is discharged. One cam groove 4 is provided, or several cam grooves 4 are provided in order to cause the protruding portion 3 to perform another movement every rotation.

FIGS. 1 and 2 show a lubricating device according to a first embodiment. This lubricating apparatus includes a tank 11 for storing lubricating oil, and a pump 12 for sucking and discharging the lubricating oil in the tank 11. The pump 12 is, for example, a motor-driven plunger pump of a variable discharge amount and discharge speed type, and is provided in plural (six in the embodiment). A nozzle 13 can be connected to each pump 12 via a pipe. The nozzle 13 is provided on 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 cam groove 4. The nozzles 13 are prepared by the number of 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 upper part of the tank 11.

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

The drive control unit 20 includes an operation requirement input means 30 for inputting the operation requirements of the circular knitting machine. The operation requirement input means 30 is provided on the front surface of the control case 14 as shown in FIG.
Key 31 for inputting the number of revolutions of the circular knitting machine and the diameter of the circular knitting machine
And a display unit 32 similarly provided on the front surface of the control case 14 and indicating 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 time based on the operation requirement set in the discharge amount setting unit 21 and input to the operation requirement input unit 30. The discharge amount calculation means 33 and the operation requirement input means 30 set in the discharge speed setting means 22
Pump 1 per quantity based on the operating requirements entered in
A discharge speed calculating means 34 for calculating the discharge speed of the second and the operating 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 inputted in the step S1. The discharge speed calculating means 34 calculates the discharge speed so that the lubricant oil is discharged from the nozzle 13 during at least one rotation of the needle row. Each function of the drive control unit 20 is realized by a built-in CPU.

Therefore, according to the lubricating 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 determined in advance.
Input is performed using 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 calculating means 33 and set in the discharge amount setting means 21. Further, the discharge speed of the pump 12 per discharge amount is calculated by the discharge speed calculating means 34 and set in the discharge speed setting means 22. Furthermore, the intermittent time calculating means 35 calculates the intermittent time of the pump 12,
It is set in the intermittent time setting means 24.

A start signal is sent from the start signal sending means 25 at every set intermittent time. The start signal causes the pump drive means 23 to drive the pump 12 so that the set discharge amount and discharge speed are set as described above. I do. When this one 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 stops until there is a start signal after the next intermittent time.

When the pump 12 is driven, the pump 12
Thus, an appropriate amount of lubricating oil is discharged at a set speed, and is discharged from the nozzle 13 to the cam groove 4 of the cam 5.
In this case, the discharge speed is set so that the lubricating oil is discharged during at least one rotation of the needle row of the circular knitting machine. The lubricating oil is supplied to all the protrusions 3 of 1,
Therefore, it is possible to prevent a situation in which the lubricating oil is well distributed and uneven lubrication occurs. In addition, since the discharge amount and the intermittent time are also set to appropriate values, they do not scatter around and contaminate, so that there is no waste of lubricating oil 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 operation requirements of the circular knitting machine are input, the discharge amount, the discharge speed, and the intermittent time are calculated, and the discharge amount, the discharge speed, and the intermittent time are set. Lubrication is performed automatically and lubricating oil is reliably supplied to the cam groove 4.

FIG. 3 shows a lubricating device for a circular knitting machine according to a second embodiment. It has the same pump 12 and nozzle 13 as 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 during at least one rotation of the needle row. Specifically, as shown in FIG. 3, the drive control unit 40 includes a discharge amount setting unit 41 for manually setting the discharge amount of the pump 12 per one time, and a discharge amount setting unit 41.
A discharge speed setting means 42 for setting the discharge speed of the pump 12 per one time set in the above-mentioned manner, and starting when there is a start signal and stopping when there is a stop signal, A pump driving means 43 having, for example, a motor for driving the pump 12 to reach the speed, an intermittent time setting means 44 for manually setting the intermittent time of the pump 12, and a start signal sending 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 ejection.

The drive control unit 40 is configured to detect the number of revolutions of the needle row of the circular knitting machine, and the number of revolutions detected by the number of revolutions set by the discharge speed setting means 22 and detected by the number of revolutions detecting means. A discharge speed calculating means 48 for calculating the discharge speed of the pump 12 per one time is provided. The discharge speed calculating means 48 determines, for example, that the detected rotational speed is 10R.
If it is PM, the discharge speed is calculated so that the lubricating oil is discharged in 10 seconds when the needle row makes one rotation. Therefore, also in the second embodiment, the lubricating oil is supplied to all the protruding portions 3 of the large number of needles 1 passing through the cam grooves 4 on the circumference, and therefore, the lubricating oil spreads well. This prevents a situation in which uneven lubrication occurs. In this case, since the discharge speed is calculated by actually measuring the number of rotations, even if the number of rotations of the rotating shaft 2 is different, it is possible to automatically cope with this without manually resetting the number of rotations. Will be better.

FIG. 4 shows a lubricating device for a circular knitting machine according to a 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 during at least one rotation of the needle row.
Is controlled intermittently. Specifically, as shown in FIG. 4, the drive control unit 50 sets a pump drive unit 53 that drives the pump 12 that starts when there is a start signal and stops when there is a stop signal, and sets an intermittent time of the pump 12. Intermittent time setting means 54, a start signal transmitting means 55 for transmitting a start signal for each intermittent time, a rotational position detecting means 57 for detecting the rotational position of the needle row of the circular knitting machine, and a rotational position detecting means. And a stop signal sending means 56 for sending a stop signal based on the position information. Stop signal sending means 56
For example, a stop signal is transmitted when the rotational position when the pump driving unit 53 is driven reaches a position rotated by 360 degrees. Therefore, also in the third embodiment, the lubricating oil is discharged from the nozzle 13 during at least one rotation of the needle row, and all the protrusions 3 of the large number of needles 1 passing through the cam grooves 4 on the circumference. Since the lubricating oil is supplied, the situation where the lubricating oil spreads well and uneven lubrication occurs is prevented. Further, since the rotational position of the rotating shaft is actually measured, even if the rotating speed of the rotating shaft is different, it can be automatically dealt with without resetting it manually, thereby improving the efficiency.

In the above embodiment, the pump 12
Not only a 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 above-described one, and may be appropriately changed.

[0027]

As described above, the circular knitting machine of the present invention
According to the lubricating device , the lubricating oil is discharged to the cam groove while the needle row of the circular knitting machine makes at least one rotation, so that all the protrusions of the needle passing through the cam groove on the circumference are lubricated. The oil is supplied, so that the lubricating oil can be distributed evenly to the necessary places without polluting the surroundings with the lubricating oil, thereby preventing the occurrence of uneven lubrication. In addition, the intermittent lubrication eliminates waste of lubricating oil compared to the continuous discharge type, and has the effect of supplying a sufficient amount of lubricating oil in a small amount evenly to the required locations and ensuring the durability of the machine. .

Further, if the discharge amount, the discharge speed, and the intermittent time are set by the drive control section, the pump is automatically driven by the pump driving means to the set discharge amount and the discharge speed. Therefore, lubricating oil can be reliably supplied to the cam groove.

Furthermore, by inputting the operation requirements of the circular knitting machine and calculating the discharge amount, the discharge speed, and the intermittent time, appropriate lubrication in accordance with the operation requirements of the circular knitting machine is automatically performed.

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 is possible to automatically cope with the change without manually resetting the rotation speed. Get better.

Further, when the rotational position of the rotary shaft is actually measured, even if the rotational speed of the rotary shaft differs, it can be automatically dealt with without manually resetting the rotational speed. Get better.

[Brief description of the drawings]

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

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

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

FIG. 4 is a view 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]

 REFERENCE SIGNS LIST 1 needle 2 rotary shaft 3 protrusion 4 cam groove 5 cam 6 cam holder 11 tank 12 pump 13 nozzle 14 control case 20, 40, 50 drive control unit 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 unit 33 Discharge amount 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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D04B 35/28

Claims (4)

(57) [Claims] 1. A plurality of needles arranged in a row on a circumference, and a needle provided inside the row of needles, the needles being movably engaged with each other and rotated to rotate the row of needles along the circumference. Shaft and
A drum-shaped cam provided with a cam groove provided outside the needle row and protruding from each needle to engage and move each needle when the needle row rotates, and a drum-shaped cam provided outside the cam. In a lubricating apparatus for lubricating a circular knitting machine having a fixed cam holder, a nozzle provided in the cam holder for discharging lubricating oil to a cam groove of the cam, a pump for supplying lubricating oil to the nozzle, and at least one needle row are provided. A drive control unit for intermittently controlling the pump so that the lubricating oil is discharged from the nozzles during rotation , and the drive control unit sets the pump discharge amount per time
Discharge amount setting means, and a single amount set in the discharge amount setting means
Discharge speed setting means for setting the discharge speed of the pump per hit
And when there is a start signal and when there is a stop signal
Stop and adjust to the discharge rate and discharge rate set above.
Pump driving means for driving the pump so that
Intermittent time setting means for setting the intermittent time, and for each intermittent time
Starting signal sending means for sending a starting signal to the printer and one ejection
Stop signal sending means for sending a stop signal after completion
A lubricating device for a circular knitting machine. A drive control unit for inputting operation requirements of the circular knitting machine; and a pump control unit for a pump based on the operation requirements set in the discharge amount setting means and input to the operation requirement input means. A discharge rate calculating means for calculating a discharge rate; a discharge rate calculating means for calculating a discharge rate of the pump per one stroke based on an operation requirement set in the discharge speed setting means and input to the operation requirement input means; 2. The lubricating device for a circular knitting machine according to claim 1, further comprising: an intermittent time calculating unit that calculates an intermittent time of the pump based on the operating requirement set in the time setting unit and input to the operating requirement input unit. A drive control unit for detecting the number of rotations of the needle row of the circular knitting machine; and controlling the one-time rotation based on the number of rotations set in the discharge speed setting means and detected by the number of rotations detection means. 2. A lubricating device for a circular knitting machine according to claim 1, further comprising a discharge speed calculating means for calculating a discharge speed of the pump per amount. 4. A drive control section comprising : a pump drive means for driving a pump which starts when there is a start signal and stops when there is a stop signal; an intermittent time setting means for setting an intermittent time of the pump; Start signal transmitting means for transmitting a start signal every time, rotational position detecting means for detecting the rotational position of the needle row of the circular knitting machine, and stop for transmitting a stop signal based on the position information detected by the rotational position detecting means. The lubricating device for a circular knitting machine according to claim 1 , further comprising a signal transmitting means.