JPH0260778B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a lubricating oil supply device for a circular knitting machine that knits socks such as socks and seamless stockings at high speed, for example.

(Prior Art) A lubricating device for this type of circular knitting machine that has already been proposed is constructed as shown in FIGS. 4 and 5 (Japanese Patent Application Laid-open No. 146855/1983).

That is, in FIGS. 4 and 5, a cylinder holder 5, which is integral with a knitting machine cylinder 3 equipped with knitting needles 2 and a jack (not shown), is rotatably fitted into the machine frame 1 via a bearing 4. It is equipped with
A knitting fabric guide cylinder 6 is provided within the knitting machine cylinder 3. In addition, a well-known scissors stand device 7 and a plurality of yarn supply devices (not shown) are provided directly above the upper opening of the knitting fabric guide cylinder 6, and the inside of the knitting machine cylinder 3 and the above An oil supply passage 8 is formed between the outer periphery of the cylinder holder 5, and one end of this oil supply passage 8 communicates with a plurality of oil outlets 9 bored in the knitting machine cylinder 3. The other end of the oil supply passage 8 is located between the bearings 4 and 4.
It is connected to the drain port 10 through the drain port 10. Further, an oil supply pump 11 is connected to this drain port 10 via a supply pipe 12, and this oil supply pump 11 is connected through a discharge pipe 13 to a discharge port 14 attached near the bearing 4. The discharge port 14 communicates with the oil supply passage 8 through the space between the bearings 4. Furthermore, a cylindrical open type oil recovery cylinder 15 is provided in the machine frame 1 where the upper part of the knitting machine cylinder 3 is located, and the upper opening 15a of the oil recovery cylinder 15 is
It is formed so as to surround the scissors stand device 7 and a plurality of thread supply devices (not shown).

Therefore, the oil supply device in the circular knitting machine described above is
During operation, by driving the oil supply pump 11, the lubricating oil of the oil supply pump 11 is force-fed through the discharge pipe 13 to the discharge port 14, the bearing 4, and the oil supply passage 8, and the lubricating oil of this oil supply passage 8 is The oil flows out from each oil outlet 9 into the needle groove 3a of the knitting machine cylinder 3, thereby lubricating the knitting needles 2 and jack.

On the other hand, the lubricating oil flowing out from each oil outlet 9 to the needle groove 3a of the knitting machine cylinder 3 is temporarily collected at the bottom of the oil collecting cylinder 15, but the lubricating oil in this oil collecting cylinder 15 is drained. The water flows back to the drain port 10 through the hole 15a.

(Problem to be Solved by the Invention) However, the oil supply device in the above-mentioned circular knitting machine has a relationship in which the cylindrical oil recovery cylinder 15 surrounds the scissor stand device 7, each yarn supply device, etc. (1) The lubricating oil leaked from each oil outlet 9 to the needle groove 3a of the knitting machine cylinder 3 scatters onto the scissor stand device 7 and a plurality of yarn supply devices (not shown),
Not only does it adhere to the multiple knitting yarns supplied and the knitted fabrics being knitted, staining these knitting yarns and the knitted fabrics being knitted, but (2) due to this, it is difficult to clean these products. (3) Since the same lubricating oil is used for the lubricating action of the bearing 4 and the lubricating action of the needle groove 3a of the knitting machine cylinder 3, the lubricating oil contaminated by the bearing 4 is The above knitting machine cylinder 3
As a result, the knitting needles 2 in the needle groove 3a of the knitting machine cylinder 3 become hard to operate and easily wear out, and (4) machining of the oil supply passage 8 is also troublesome. , it is difficult to provide it at low cost.

The present invention has been made in view of the above-mentioned circumstances, and uses centrifugal force to pump lubricating oil into a spiral oil groove formed in the knitting machine cylinder, and causes the lubricating oil to flow outward. The lubricating oil flows into the groove to provide lubrication, and this lubricating oil is stored in a sealed cylinder so that it does not scatter to the scissor stand device, and is prevented from adhering to the multiple knitting yarns being supplied or the knitted fabric being knitted. This is an attempt to improve quality and ensure product reliability and safety.

[Structure of the invention]

(Means for Solving the Problems and Their Effects) The present invention provides a circular knitting machine in which a knitting machine cylinder equipped with knitting needles is rotatably fitted in a machine frame. A plurality of circumferential grooves are formed at regular intervals on the outer peripheral surface of the knitting machine cylinder so as to cross and communicate with the spiral oil groove, and the oil flows back to the machine frame located outside the knitting machine cylinder. A sealed cylindrical body having a pipe is provided to surround the knitting machine cylinder, and an oil supply pipe is connected to the machine frame located at the lower end of the helical oil groove so as to communicate with the helical oil groove. In order to improve quality by preventing it from adhering to the yarn or the knitted fabric during knitting, an independent lubrication supply path is provided to the knitting machine cylinder equipped with the knitting needles to ensure smooth lubrication. It is something.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

It should be noted that the present invention will be described with the same reference numerals attached to the same constituent members as in the above-described specific example.

In FIG. 1, reference numeral 1 denotes a machine frame of a circular knitting machine, and this machine frame 1 includes a cylinder holder 5 that is integrated with a knitting machine cylinder 3 equipped with knitting needles 2 and a jack (not shown). The cylinder holder 5 is rotatably fitted through a bearing 4, and a knitted fabric guide cylinder 6 is provided inside the cylinder holder 5. Further, a well-known scissors stand device 7 is provided directly above the upper opening of the knitted fabric guide cylinder 6, and this scissors stand device 7 is equipped with a dial drive shaft, a circular cutter, a dial cam, a dial, etc. It consists of Furthermore, a yarn supply device 16 for knitting yarn Y is installed in the machine frame 1 near the scissor stand device 7,
This yarn feeding device 16 is constructed by providing an electromagnet 16c on a frame 16b provided with a yarn guide 16a, and connecting a yarn feeding lever 16d to the electromagnet 16c.

On the other hand, in the machine frame 1 located outside the knitting machine cylinder 3, there is a closed cylinder 1 having a return pipe 17.
8 is provided so as to surround the knitting machine cylinder 3, and this sealed cylinder 18 is divided into two parts so that it can be easily disassembled, and is configured to be watertight. Further, between the machine frame 1 located at the bottom of the sealed cylinder 18 and the cylinder holder 5, a sealing member such as an oil seal,
9 is fitted, and this seal member 19 supplies lubricating oil to the knitting machine cylinder 3 to the bearing 4.
It is sealed to prevent it from flowing into the side.

On the other hand, at least one or two or more spiral oil grooves 20 are formed on the inner circumferential surface 3b of the knitting machine cylinder 3, and needle grooves 3a on the outer circumferential surface of the knitting machine cylinder 3 have oil grooves formed at regular intervals. A plurality of circumferential grooves 21 are formed to intersect and communicate with the spiral oil groove 20. That is, at each position where the helical oil groove 20 formed on the inner periphery of the knitting machine cylinder 3 intersects with each of the circumferential grooves 21 formed on the outer periphery of the knitting machine cylinder 3, the helical oil groove 20 Each groove with each of the circumferential grooves 21 overlaps to form each communication hole. In particular, the spiral oil groove 20 forms a spiral groove in the opposite direction to the rotational direction of the knitting machine cylinder 3, as shown in FIG. When the cylinder 3 rotates, the centrifugal force of the knitting machine cylinder 3 pumps up the water.

Furthermore, an oil supply pipe 22 is connected to the machine frame 1 located at the lower end 20a of the spiral oil groove 20 so as to communicate with the spiral oil groove 20, and this oil supply pipe 22 is provided with an oil supply tank. 1st oil supply pump 2
3, and this first oil supply pump 23
is connected to the reflux pipe 17.

On the other hand, the lower part of the transmission gear 24 and the machine frame 1
A sealing member 25, such as an oil seal, is fitted between the lower part 1a of the bearing 4 and the bearing 4, and this sealing member 25 prevents the highly viscous lubricating oil supplied to the bearing 4 from flowing out of the machine. I have to.
Furthermore, the machine frame 1 located above the bearing 4
A lubricating oil supply pipe 26 is connected to the bearing 4 so as to be able to supply the bearing 4 with oil, and the other end of the supply pipe 26 is connected to a second oil supply pump 2 equipped with an oil tank.
7 is connected to the second oil supply pump 27, and the reflux pipe 28 is connected to the second oil supply pump 27.

Hereinafter, the effects of the present invention will be explained.

Therefore, when the circular knitting machine is in operation, the knitting machine cylinder 3 rotates at high speed, and the knitting yarn Y from the yarn supply device 16 is fed into socks, seamless stockings, etc. by the knitting needles 2, sinkers, etc. Knit socks at high speed.

On the other hand, when the first oil supply pump 23 is driven, the lubricating oil with low viscosity from the first oil supply pump 23 passes through the oil supply pipe 22 and flows into the spiral oil groove 20.
At the same time, the lubricating oil is pumped upward by the centrifugal force of the knitting machine cylinder 3 as the knitting machine cylinder 3 rotates, and enters the helical oil groove 20 at regular intervals. Oil is supplied to each circumferential groove 21 that intersects and communicates with each other. As a result, the lubricating oil is transferred to the needle groove 3a of the knitting machine cylinder 3.
This eliminates friction with each knitting needle 3 and makes vertical sliding of each knitting needle 3 smooth. The low-viscosity lubricating oil that has finished its work naturally flows down and once accumulates at the bottom of the sealed cylinder 18, but returns to the oil supply pump 23 through the reflux pipe 17.

On the other hand, when the second oil supply pump 27 is driven, the highly viscous lubricating oil from the second oil supply pump 37 is supplied to the bearing 4 and the fitting portion thereof through the oil supply pipe 26. After completing its work, the highly viscous lubricating oil naturally flows down into the reflux pipe 28.
The oil is returned to the second oil supply pump 37 through the flow.

As described above, the oil supply device for a circular knitting machine of the present invention has a spiral oil groove 20 formed on the inner circumferential surface 3b of the knitting machine cylinder 3, and a plurality of circumferential oil grooves formed on the outer circumferential surface of the knitting machine cylinder 3 at regular intervals. The groove 21 is connected to the above spiral oil groove 2.
Since it is formed so that it intersects and communicates with 0,
The centrifugal force of the rotating knitting machine cylinder 3 pumps up lubricating oil to the knitting needles 2 where the spiral oil groove 20 is located.
Furthermore, even if the lubricating oil is scattered around by the knitting machine cylinder 3, the closed cylinder 18
Because it is stored inside the knitting machine cylinder 3,
The knitting yarn Y of the scissors stand device 7 and the yarn supply device 16 is placed above the
There is no risk of contamination with lubricating oil, and
Since the knitting machine cylinder 3 and the bearing 4 are supplied with oil through independent oil supply lines, the knitting machine cylinder 3 can be efficiently and appropriately supplied with oil.

Note that the design of the first oil pump 23 and the second oil pump 27 of the present invention may be freely changed so that pinions are engaged with the transmission gear 24 and the pinions are driven via respective transmission belts. be.

〔Effect of the invention〕

As described above, according to the present invention, in a circular knitting machine in which a knitting machine cylinder 3 equipped with knitting needles 2 is rotatably fitted in a machine frame 1, a spiral oil groove is formed in the inner circumferential surface 3b of the knitting machine cylinder 3. 20, and a plurality of circumferential grooves 21 are formed at regular intervals on the outer peripheral surface of this knitting machine cylinder 3.
A closed cylinder 18 having a return pipe 17 is provided in the machine frame 1 located outside the knitting machine cylinder 3 so as to surround the knitting machine cylinder 3. Since the oil supply pipe 22 is connected to the machine frame 1 located at the lower end of the spiral oil groove 20 so as to communicate with the spiral oil groove 20, the centrifugal force of the rotating knitting machine cylinder 3 allows the lubricating oil to flow. Not only can the lubricating oil be smoothly supplied to the knitting needles 2 where the spiral oil groove 20 is located, but even if the lubricating oil is scattered around, the sealed cylinder 18
Since it is stored inside the sealed cylinder 18,
There is no risk of contamination of the knitting yarns in the upper scissor stand device 7 and yarn supply device 16 of the knitting machine cylinder 3 with lubricating oil, and the quality is improved by preventing the lubricant from adhering to multiple knitting yarns or the knitted fabric being knitted. can be achieved.
Furthermore, the present invention provides a plurality of circumferential grooves 21 at regular intervals on the outer circumferential surface of the knitting machine cylinder 3.
Because it is formed so that it intersects and communicates with 0,
It has excellent effects such as eliminating the need to drill a large number of oil outlets as in the past.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an oil supply device in a circular knitting machine of the present invention, FIG. 2 is a perspective view showing a part of the main part of the present invention cut away, and FIG. 3 is a partial plan view of the same as above. Fourth
5 and 5 are respective views of an oil supply device in a conventional circular knitting machine. DESCRIPTION OF SYMBOLS 1... Machine frame, 2... Knitting needle, 3... Knitting machine cylinder, 7... Scissors stand device, 16... Yarn supply device, 17
... Reflux pipe, 18 ... Sealed cylinder, 20 ... Spiral oil groove, 21 ... Circumferential groove, 22 ... Oil supply pipe, 23 ... Oil supply pump.

Claims (1)

[Claims] 1. In a circular knitting machine in which a knitting machine cylinder 3 equipped with knitting needles 2 is rotatably fitted in a machine frame 1, a spiral oil groove 20 is formed on an inner circumferential surface 3b of the knitting machine cylinder 3 in the direction of rotation of the knitting machine cylinder 3. A plurality of circumferential grooves 21 are formed on the outer peripheral surface of the knitting machine cylinder 3 at regular intervals so as to intersect with the helical oil groove 20. This helical oil groove 20 at each intersection position with each circumferential groove 21
and the circumferential groove 21 form communication holes, and the circulation pipe 1 is connected to the machine frame 1 located outside the knitting machine cylinder 3.
7 is provided in a sealed manner to surround the knitting machine cylinder 3, and an oil supply pipe 22 is connected to the machine frame 1 located at the lower end of the helical oil groove 20. An oil supply device for a circular knitting machine characterized by being connected.