JPS5857533B2 - Knitting machine yarn feed exchange device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn feeding exchange device for a knitting machine that exchanges yarn feeding of multicolored knitting yarns of three or more colors.

Conventionally, the above-mentioned yarn feeding and changing device has four yarn feeding bodies that are movable between a yarn feeding position and a non-yam feeding position, and each yarn feeding body is moved to the yarn feeding position and the non-yam feeding position as appropriate by manual operation. A knitting yarn of four colors is known to be replaced by displacement, but this is because each of the above-mentioned yarn feeders can only be displaced to two positions: a yarn feeding position and a non-yarn feeding position. , it is impossible to predict at a glance which yarn feeder among the yarn feeders at the non-yarn feeder position will be displaced to the yarn feeder position next, so it is necessary to check whether the knitting yarn will be replaced with the next knitting yarn. This has the disadvantage that it is difficult to replace the yarn and there is a risk of making a mistake in replacing the yarn feed, and that the manual operation is time-consuming and complicated.

The object of the present invention is to eliminate the above-mentioned conventional drawbacks, namely:
It is possible to predict at a glance which yarn feeder will be displaced to the yarn feeding position next, which makes it easy to check which knitting yarn will be replaced next, and there is no risk of making a mistake in yarn feeding. To provide a yarn feeding exchange device for a knitting machine that can automatically change the yarn feeding of multicolored knitting yarns of three or more colors in relation to the sliding of a carriage.

The illustrated embodiment will be described below.

1.2 is the main body of the fine knitting machine, which is arranged opposite to each other in a predetermined relationship such that the knitting needles 4, 4' connected by the connector 3 intersect in front of the sinker needles 5, 5'; Main and sub-carriages 6 slidably mounted on main and fine knitting machine bodies 1 and 2
．． 7 is an arm 10 provided with a yarn feeder body 9 having a yarn feeder 8;
are connected so that they slide together (Figures 1 and 2)
.

11 is a starting piece installed on the arm 10 so as to be able to rise and fall freely;
It engages with a passive piece 12 (described later) in connection with the sliding movement of the main and sub carriages 6.7 (hereinafter collectively referred to as carriage C), and rotates this passive piece 12 in a predetermined direction. (Figures 1 and 2).

Reference numeral 13 denotes a support body, which has a substantially horizontal shape and has one side placed on the left side of the main knitting machine main body 1 (Fig. 1), and a retaining rod 15 that moves forward and backward by the rotational operation of the eldest child 14 is attached to the main knitting machine main body 1. The main knitting machine body 1 is removably mounted on the main knitting machine body 1 by inserting it into a receiving hole (not shown) provided in the figure and locking the hook, and the base body 16 fixed on the other side is inserted into the main knitting machine body 1 , 2 is supported at a position that allows sliding of the carriage C (FIGS. 1 to 3).

As shown in FIG. 3, the base body 16 has a plate shape in which the left side portion 16a is a horizontally long rectangle, the center portion 16b is a square shape, and the right side portion 16c is approximately rectangular. The grooves 21 to 24, which are screwed to the sides and in which the yarn feeders 17 to 20 are fitted to the right side 16C, are parallel to each other with a required interval, and both ends are opened at the front and rear edges of the right side 16c. In addition, a guide groove 26 for the slider 25 described later is provided slightly inwardly from the groove 24, parallel to the groove 24, and closed at both ends by raised edges formed around the base body 16. A guide groove 27 for the slider 25 is provided on the outside, which is continuous with this groove 21 (FIGS. 3 to 5).

Reference numeral 28 denotes a spring stopper installed approximately in the center of each bottom of the grooves 21 to 24, and 29 a knitting yarn guide rod whose base end is fixed to the left side 16c of the base body 16 and mounted behind the right side 16c. (Figures 2 to 5).

Each of the yarn supplying bodies 17 to 20 has the same structure, so to explain the yarn supplying body 17, the yarn supplying body 17 is longer than the groove 21 and has an inverted U-shape in cross section, and has a front end (left end in FIG. 5). A hook 31 that engages the knitting yarn is screwed diagonally downward to the rear end of the closed base rod 30, and a right-angled triangle is formed on the front side of the upper surface of the base rod 30, with the hypotenuse obliquely intersecting the axis of the base rod 30. A protrusion 32 is provided, and a protrusion 33 having a flat vertically rectangular shape is provided on the rear side of the upper surface.
The spring stopper piece 28 is positioned in the hollow part 34 of the base rod 30 and slidably fitted into the groove 21, and the front inner end of the hollow part 34 and the spring stopper piece A coil spring 35 is loaded between the coil spring 28 and the coil spring 28 (Fig. 3.5).

Therefore, each of the yarn feeders 17 to 20 always has the front end of the base rod 30 projected forward from the front edge of the right side 16C of the base body 16 by the coil spring 35, and the hook 31
Yarn feeding non-working position (Yam feeder 19, 20 in Fig. 3) where the knitting yarn is brought out from the yarn feeder 8 and placed in a non-feeding state, with the knitting yarn facing near the rear of the rear edge of the right side portion 16c. At the same time, the hook 31 is directed to the lower side of the knitting yarn guide rod 29 against the bias of the coil spring 35, and the corresponding knitting yarn is introduced into the yarn feeder 8 and fed. The yarn feeding position (yarn feeder 17 in the same figure) that makes it into a yarn state, and the hook 31 facing a little further back than the hook in the yarn feeding inactive position, and leading out the corresponding knitting yarn from the yarn feeder 8 and making it non-woven. The yarn feeding state is set to the yarn feeding state, and the yarn feeding body 18 in the same figure waits to move to the yarn feeding position. The body does not participate in the yarn feeding exchange action performed in conjunction with the sliding movement of the carriage C, and both the standby position and the yarn feeding non-action position are such that the yarn feeding body at the position does not feed the corresponding knitting yarn. The yarn feeding position is set in such a manner that the yarn feeding position is in a non-yam feeding position (see Fig. 3.5).

The slider 25 has a thousand-sided oval shape, and a buccal side part 25a is slidably fitted into the guide groove 26, and this buccal side part 25a
Connecting piece 36 extending horizontally from the rear side to the left (Fig. 3)
The cam 3 is pivotally supported on the upper surface of the central portion 16b of the base body 16.
7, and the long side portion 25b is connected to each of the yarn supplying bodies 17 to 2.
The lower end of the support piece 38 extending downward from the right end faces the guide groove 27, and the support piece 38 extends downward from the right end of the support piece 38 in a relationship perpendicular to its axis. A preset par 39 is mounted between the piece 38 and the buccal side part 25a.

The slider 25 is normally moved to a predetermined original position (the third
The cam 37 that connects the connecting piece 36 rotates in a predetermined direction in connection with the engagement of the actuating piece 11 and the passive piece 12, thereby pulling the It moves backward against the bias of the spring 40, and in cooperation with the preset par 39, moves the yarn feeder 11 to 20 in the standby position back to an operating position slightly behind the yarn feeding position. It is something that is displaced.

That is, the passive piece 12 is approximately circular and has fan-shaped teeth 4 on the periphery.
1 arranged in a row is rotatably supported on a shaft 42 on the upper surface of the central portion 16C of the base 16, and is normally connected to the activation piece 11 by a tension spring 43 stretched between the base 16 and the base 16. is biased to standby in the engageable position (Fig. 3);
The cam 37 has an elliptical shape, and its rear side is rotatably supported on a shaft 44 provided on the upper surface of the central portion 16C, and a pinion 45 integrally formed on the lower surface of this shaft support is meshed with the teeth 41. In addition to being connected to the passive piece 12, a pin 46 provided on the front upper surface is connected to the slider 25 by engaging with an engaging piece 36' extending downward from the rear edge of the connecting piece 36 (the third figure).

As the carriage C slides in a predetermined direction, the actuating piece 11 engages with the driven piece 12, and as this driven piece 12 rotates in a predetermined direction (counterclockwise in FIG. 3), When the cam 37 rotates in a predetermined direction (the direction of the hour hand in the figure), the pin 46 pushes the engagement piece 36' backward, causing the slider 25 to retreat to the operating position against the bias of the tension spring 40. However, when the engagement between the actuating piece 11 and the driven piece 12 is released due to the continued sliding of the carriage C, the driven piece 12 and the cam 37 return to their original positions by the force of the tension spring 43. Then, the slider 25 returns to its original position by the bias of the tension spring 40 (FIG. 3).

Further, when the activation piece 11 engages with the driven piece 12 in connection with the sliding movement of the carriage C in the opposite direction to the above-mentioned predetermined direction, and the driven piece 12 and the cam 37 rotate in the opposite direction to the above-mentioned predetermined direction, Since the pin 46 disengages from the engagement piece 36' and does not push the engagement piece 36', the slider 25 remains in its original position (FIG. 3).

The preset par 39 has four engaging pieces 47 that engage with each of the projections 32 of each of the yarn feeders 17 to 20, extending downward from the lower edge thereof at the same pitch as each of the projections 32, and extending from the lower edge thereof at the same pitch as each of the projections 32. is slidably inserted into the receiving holes 48 and 49 formed in the buccal side part 25a of the slider 25 and the support piece 38, and by the tension spring 50 that is normally stretched between the slider 25 and the support piece 38.
The stopper 51 is brought into contact with the buccal side portion 25a and each engaging piece 47 is biased to stand by at the operating position (FIGS. 3 and 4) where it can be engaged with each protrusion 32, and each of the yarn supplying bodies 17 ~2
0 retreats, the oblique side of the protrusion 32 engages with the corresponding engagement piece 47 from the front, and is pushed against the urging force of the tension spring 50, and the protrusion 32
(
Figures 3-5).

Therefore, the yarn feeders 17 to 20, the slider 25, and the preset par 39 are set in a normal relationship, that is, as shown in FIG.
is at the original position and the preset par 39 is at the working position, among the yarn feeding bodies 17 to 20, the yarn feeding bodies 19 and 20 in the yarn feeding non-working position have their protrusions 32 connected to the engagement piece 47. The yarn supplying body 18 in the standby position contacts the protrusion 32 with the rear side of the engagement piece 47 to release the coil spring 35.
As the slider 25 moves to the operating position, the yarn feeder 18 is pushed by the engagement piece 47 on the protrusion 32, and the yarn feeder 18 Displaced slightly backward from the position.

Further, when the yarn supplying body 18 is in the standby position, the yarn supplying body 19,
20 is manually moved backward against the bias of the coil spring 35 in order to displace one of them to the standby position, the preset par 39 is displaced to the inactive position, and this yarn feeder 19
, 20 to the standby position, while the yarn supplying body 1
Since the engagement between the protrusion 32 of No. 8 and the engaging piece 47 is released, the yarn supplying body 18 returns to the yarn feeding non-operating position by the bias of the coil spring 35, and the yarn supplying body 19 and 20 displaced to the standby position
is maintained at the standby position by abutting the protrusion 32 against the rear side of the engagement piece 47 of the preset par 39 which has returned to the operating position due to the bias of the tension spring 50 (FIG. 3).

The yarn supplying bodies 17 to 20, which are in the standby position and are retracted as the slider 25 moves to the operating position, are connected to locking members provided separately corresponding to the respective yarn supplying bodies 17 to 20. 51 to 54, and the yarn supplying bodies 17 to 20 locked at this yarn feeding position are moved as the other yarn supplying bodies 17 to 20 move to the operating position of the slider 25. When the yarn is moved backward and locked at the yarn feeding position by the corresponding locking member, the lock is released and the yarn returns to the standby position (FIG. 3).

Therefore, since the above-mentioned locking members 51 to 54 have the same structure or function, the locking member 53 corresponding to the yarn supplying body 19 will be explained with reference to FIGS. 6 to 9. An L-shaped groove 55 that opens on the right side edge and rear side edge on the back side of the
In addition, an upwardly inclined surface 56 is provided continuously on the left side of this groove 55, and a stopper 57 is provided on the lower surface of the center.
is provided protrudingly, and its front end is pivotally supported on a shaft 58 established on the upper surface of the base body 16 so as to be movable horizontally and vertically.
8, the stopper 57 is brought into contact with the base rod 30 of the yarn supplying body 19, its axis is diagonally intersecting the axis of the base rod 30, and the back side is brought into contact with the upper surface of the base rod 30. It is energized to stand by at the position (dashed line in FIG. 7).

Accordingly, as the yarn feeder 19 moves backward due to the movement of the slider 25 to the operating position, the locking body 53 is pushed by the projection 33 engaging with the right side edge of the spring 59. When the yarn feeder 19 rotates counterclockwise against the bias (dashed line in FIG. 6) and retreats slightly backward from the yarn feeding position, the protrusion 33 faces the right opening of the groove 55 and engages with the right edge. When the connection is released, the spring 59 biases the clockwise direction (
(Fig. 7) to fit the groove 55 into the protrusion 33, and as the slider 25 returns to its original position, it slowly returns from the most retreated position and the yarn feeder 19 reaches the yarn feeding position. At this time, the projection 33 is displaced to the locking position (solid line in FIG. 7, FIG. 8) where it engages with the inner end of the bent portion of the groove 55, and the yarn feeding body 19 is locked in the yarn feeding position (sixth, Figure 7).

Yarn supplying bodies 17 and 18°20 other than the yarn supplying body 19 mentioned above
As the slider 25 moves to the operating position, one of them moves backward to be displaced to the yarn feeding position and is locked at the yarn feeding position by the corresponding locking member 51, 52, 54. , when the yarn feeding body 19 moves the protrusion 32 by the engagement piece 47 and retreats slightly from the yarn feeding position, the locking member 53 in the locking position engages the groove 55 and the protrusion 33. When the engagement is disengaged, the yarn feeder 19 is rotated clockwise (FIG. 7) by the urging force of the spring 59, so that the inclined surface 56 faces the protrusion 33 (dashed line in the same figure), and the locking of the yarn feeder 19 is released. As the yarn feeder 19 moves forward to return to the standby position due to the bias of the coil spring 35, the protrusion 33 comes into contact with the inclined surface 56 and is pushed upward, thereby rotating upward about the shaft 58 as a fulcrum. After allowing the yarn feeder 19 to return to the standby position (FIG. 9), it returns to its original position.

Therefore, the slider 25, the cam 37, and the preset par 39 cooperate to move each of the yarn supply bodies 17 to 20,
This constitutes an operating mechanism that moves the carriage C between a yarn feeding position and a standby position, which is a non-yarn feeding position, in relation to the sliding movement of the carriage C.

Reference numeral 50 denotes a clear bar, which is made of a leaf spring and whose rear end is fixed to the base body 16, and whose front end, which has a progeny 61 for manual operation, is protruded from the receiving hole 48 of the preset par 39 and corresponds to the left end. By pressing the eldest child 61, the preset par 39 is pushed to the right against the bias of the tension spring 50, and the engagement between the engagement piece 47 and the protrusion 32 is released, resulting in the above-mentioned standby position. This is for returning the yarn feeding bodies 17 to 20 located in the position to the yarn feeding inactive position (FIG. 6).

Reference numeral 62 denotes a cover that covers the upper part of the base body 16, and has a presser piece 63 protruding on the lower surface of the portion of the base body 16 corresponding to the right side 16C to prevent the yarn supply bodies 17 to 20 from being unintentionally lifted up. At the same time, required portions of the yarn supplying bodies 17 to 20, the knitting yarn guide rod 29, and the heir 61 are made to protrude from respective window holes 62b opened at required portions of the peripheral wall 62a.

Therefore, among the yarn supplying bodies 17 to 20, the yarn supplying body 19,
20 is in the yarn feeding non-active position, the yarn feeding body 18 is in the standby position, and the yarn feeding body 17 is in the yarn feeding position, and is involved in the knitting that is carried out by the known knitting yarn take-up spring 64. knitting yarn M1
Knitting yarns M2 to M4 corresponding to yarn feeders 18 to 20 among ~M4
Knitting yarn M1 corresponding to the yarn feeder 17 is released from the hook 31 and introduced into the yarn feeder 8, and is in a non-feeding state. It is assumed that the knitting yarn M1 is in a state where the required knitting is being performed using this knitting yarn M1 (FIGS. 1 and 10).

Then, as the carriage C moves forward (in the direction of arrow 65 in FIG.
When the driven piece 12 is rotated in a predetermined direction (counterclockwise in the figure) against the bias of the tension spring 43, the cam 37 is engaged in the predetermined direction (in the clockwise direction in the figure). ) and as the slider 25 moves backward to be displaced to the operating position against the bias of the tension spring 40, the yarn feeder 18
moves back, and the hook 31 faces below the knitting yarn guide rod 29. At the same time, the yarn feeder 17 slowly retreats from the yarn feeding position, while the knitting yarn M1 is guided by the knitting yarn guide rod 29 and fed. It is engaged with the hook 31 of the thread body 1γ (FIG. 11).

Then, as the carriage C continues to move forward, the passive piece 12 and the cam 37 further rotate in a predetermined direction and the slider 25 reaches the operating position. While the yarn feeder 17 is unlocked, the yarn feeder 18 is locked at the yarn feeding position by the corresponding locking member 52, and the engagement between the actuating piece 11 and the passive piece 12 is released. As a result, the passive piece 12, cam 37, and slider 25 return to their original positions by the force of the tension springs 40 and 43, and the yarn feeder 17 attaches the knitting yarn M to its hook 31.
1 and return to the standby position by the biasing force of the coil spring 35, and when the yarn feeder 17 returns to the standby position, the knitting yarn M1 is led out from the yarn feeder 8 and enters the non-yarn feeding state, while the By displacing the yarn feeder 18 to the yarn feeding position, the knitting yarn M2 is introduced into the yarn feeder 8 and enters the yarn feeding state (first
Figure 2).

When the carriage C reaches the required position, reverses, moves back and reaches the required position, the activation piece 11 engages with the driven piece 12, and the driven piece 12 and cam 37 rotate in the opposite direction to the above-mentioned predetermined direction. In this case, the slider 25 remains at the original position without operating, so the yarn feeder 17.18 also remains at the standby position and the yarn feeding position, and as the carriage C continues to move back, the knitting yarn M1 is hooked to the hook 31. As a result, the knitting yarn M2 is led out of the yarn feeder body 9 and away from the carriage C, while the knitting yarn M2 is released from the hook 31, and thereafter the required knitting is performed using this knitting yarn M2.

Thus, in connection with the reciprocating movement of the carriage C, the yarn feeder 17.
18, the knitting yarns M12 and M2 are dynamically exchanged.

Then, either one of the knitting yarns M12M2 is in a state where the yarn feeding is exchanged automatically in connection with the reciprocating movement of the carriage C, and the yarn feeding is exchanged automatically in connection with the sliding movement of the carriage C. In order to replace either one of the knitting yarns M32M4 that is not working, what should be done when the yarn feeder 17 or yarn feeder 18 of the knitting yarn M1 or M2 to be replaced is in the standby position. For example, in order to replace knitting yarn M1 with knitting yarn M3, when yarn feeder 17 is in the standby position, if yarn feeder 19 is manually moved to the standby position, then yarn feeder 17 will be replaced by knitting yarn M3. It automatically returns to the yarn non-working position, and thereafter, in conjunction with the reciprocating movement of the carriage C, the three knitting yarns M27M are dynamically replaced by the yarn feeders 18 and 19.

As is clear from the above description, according to the present invention,
At least three or more yarn feeders are provided, and the yarn feeders are movable into three positions: a yarn feeding position, a standby position, and a yarn feeding inactive position. Since the yarn bodies are automatically displaced alternately to the yarn feeding position and the standby position in relation to the sliding of the carriage, two arbitrarily selected yarn feeding bodies out of each yarn feeding body are By setting the knitting yarns to the two yarn feeder positions and the standby position, the knitting yarns corresponding to both yarn feeders can be automatically exchanged as the carriage slides. By replacing the required yarn feeder in the inactive position, knitting yarns of three or more colors can be automatically performed in conjunction with the sliding movement of the carriage.

In addition, among the yarn feeders, the yarn feeder in the standby position is moved to the next yarn feeding position, so you can predict and confirm at a glance whether the next knitting yarn will be replaced. There is no risk of making mistakes, and it is effective for replacing yarn feed in multi-color knitting of three or more colors.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Figures 1 and 2 are a perspective view and a side view showing the state set on a knitting machine, Figure 3 is a plan view with the cover removed, and Figures 4 and 5. is an enlarged sectional view taken along the line 1-1 in Fig. 3, an enlarged sectional view taken along the line ■-■, Figs. The figures are a plan view and a side view of the main parts showing the state locked at the yarn feeding position, Figure 9 is a side view showing the state returning to the standby position, and Figures 10 to 12 are the states of the yarn feeding exchange operation. 10.11 is a plan view showing the process in which the yarn feeders 17 and 18 are switched between the yarn feeding position and the standby position, and FIG. 12 is a plan view showing the state where the knitting yarn M12M2 has been replaced. It is a diagram. 8... Yarn feeder, 17-20... Yarn feeder, 6, 7... Main, sub carriage, 25, 37.3
9...Slider, cam, and preset part that constitute the operating mechanism 1, 2...Main, secondary line machine body, 13...Support body, 16... ...Base.

Claims (1)

[Claims] 1 Yarn feeding position where the knitting yarn is introduced into the yarn feeder and placed in the yarn feeding state,
The knitting yarn is led out from the yarn feeder to be in a non-feeding state, and the knitting yarn is brought out from the yarn feeder to be in a non-feeding state and not involved in the yarn feeding exchange action. at least three or more yarn supplying bodies that are freely displaceable to non-working positions;
an operating mechanism that operates in conjunction with the sliding of the carriage and alternately displaces a yarn feeder arbitrarily selected from among the yarn feeders to the yarn feeding position and the standby position; A yarn feed exchange device for a knitting machine, characterized in that it is installed on a base supported by a support body detachably mounted on the machine body.