JPS6231103B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention sorts the knitting needles back and forth by engaging the handle plate of the needle bed with the knitting needles, which are given a backward movement effect by a movement imparting member provided on the carriage. The present invention relates to a needle selection device for a knitting machine.

An object of the present invention is that in the needle selection operation state in which the movement control member is disposed at the lower operation position, even if the carriage 17 is moved to the outside of the knitting section, the movement control member The needle can be easily avoided upwardly by contact with the needle, so that the needle selection operation of the knitting section can be carried out smoothly and accurately without any hindrance to the sliding movement of the carriage. In the needle selection inactive state where the movement control member is placed in the upper inactive position, the movement control member does not come into contact with any of the knitting needles, and the carriage 17 is moved lightly during knitting such as flat knitting. Furthermore, the structure of the needle selection cam member through which the butt on the lower surface of the carriage passes can be simplified.

The configuration of a needle selection device embodying the present invention will be described below with reference to the drawings.

Now, FIG. 1 to FIG. 9 show one embodiment of the present invention, and in the drawing, 1 is a needle bed in which a large number of needle grooves 1a are formed, and a pair of front and rear support plates 2 are provided protruding from the lower surface of the needle bed. , 3, a large number of knitting needles 4 are supported so as to be movable up and down and back and forth with butts 4a projecting upward from the needle groove 1a, and are normally held approximately horizontally as shown in FIG. 1 by an elastic member 5. It is placed in the upper position of the state. Reference numeral 6 denotes an upper support member provided on the needle bed 1 at the rear of the knitting needles 4, and as shown in FIG. Accordingly, the knitting needles 4 are arranged in an upper position.

Reference numeral 7 denotes a descent prevention member consisting of a plurality of handle plates 9 (eight in this embodiment) horizontally arranged on the needle bed 1 by a holder 8 below near the rear end of the needle groove 1a; As shown in the figure, lowering prevention protrusions 9a are formed on the upper edge of each handle plate 9 so as to correspond to the knitting needles 4 arranged at regular intervals (every 8 needles in the embodiment). The protruding positions of the protrusions 9a are arranged to be different from each other. Each handle plate 9 of the descending prevention member 7 has an operating position where its protrusion 9a receives the lower surface of the knitting needle 4 participating in a predetermined knitting and prevents the knitting needle 4 from descending, and a knitting needle 9 where the protrusion 9a is adjacent to the knitting needle 9.
The knitting needles can be moved by half a pitch between the knitting needles and the inactive position where they do not act on the predetermined knitting needles 4.

Reference numeral 10 denotes a card feed shaft rotatably provided at the rear end of the needle bed 1, into which a pattern card 11 having a number of signal holes is inserted into the outer periphery. Reference numeral 12 denotes a plurality of (24 in this embodiment) substantially U-shaped signal detection rods arranged below the card feed shaft 10 so as to be able to move up and down and swing;
The detection protrusion 12a corresponds to the signal hole of the pattern card 11, and depending on the presence or absence of the signal hole, the upper position shown in FIG. 1 (corresponding to the hole) and the lower position shown in FIG. ) and are now being selectively moved. Reference numeral 13 denotes a rotary cam body which is rotatably provided on the needle bed 1 in front of the lower part of the card feed shaft 10, and is engaged with the contact protrusion 12b of the signal detection rod 12 moved to the upper position. Projection 1
2b is designed to swing. 14 is a support plate 1 so as to separately connect the contact protrusion 12b of each signal detection rod 12 with a predetermined handle plate 9 of the descent prevention member 7.
The signal detection rods 12, which have the same number of operating rods as the signal detection rods 12 which are swingably supported by the rotary cam body 13 and which have been moved to the upper position in FIG. When this occurs, a predetermined handle plate 9 is moved to the above-mentioned operating position.

An endless belt 16 is hung between the sprocket wheels at both rear ends of the needle bed 1, and is reciprocated as the carriage 17 mounted on the needle bed 1 slides. 13 is designed to rotate. The structure of the signal detection rod 12, rotating cam body 13, operating rod 14, etc. is based on the Japanese Patent Publication No. 48
- Detailed in Publication No. 7900.

Next, the structure of the carriage 17 will be explained. Reference numeral 18 is a base plate of the carriage 17;
As shown in FIG. 5, on the lower surface thereof, a resting needle passage 19 is provided in the lateral direction through which the butts 4a of the knitting needles 4 which are in the rear rest position and do not participate in knitting are passed, and in the front part thereof, the resting needles 4 that do not participate in knitting are provided in the rear rest position. A group of knitting cams that perform two-color simultaneous knitting by guiding the butt 4a into either the butt path x or y with the butt 4a in two positions, front and back, and feeding the yarn from the yarn feeder in the two positions front and back to the hook of the knitting needle 4. 20 are arranged symmetrically. 2
Reference numeral 1 denotes lowering cams disposed on both outer sides of the knitting cam group 20, and the lowering cams 1 move the butts 4a of the knitting needles 4 which have been knitted into the butt paths x and y.
1, and is guided laterally from the rear end.

Reference numeral 22 denotes an induction cam body made of a magnetic material, which is disposed horizontally on both sides of the lowering cam 21 slightly forward of the rear end, and a swing cam 23 is pivotally supported at the inner end of the induction cam body. As shown in the figure, the butt 4a of the knitting needle 4 is connected to this swing cam 23.
and the inner end front surface of the guide cam body 22, and then aligned and guided in the lateral direction. Reference numeral 24 denotes a movement imparting member made of a permanent magnet provided on the upper surface of the guide cam body 22 along the front end of the guide cam body 22, and acts sequentially on the butts 4a of the knitting needles 4 guided to be aligned. and move them backwards.
That is, a magnetic inclined guiding surface 22a extending in the shape of a needle and a magnetic guiding cam surface 22b extending in the horizontal direction are formed on the front surface of the approximately central portion of the guiding cam body 22, and the butt 4a of each knitting needle 4 is attracted by the inclined guiding surface 22a. After that, the guide cam surface 22b attracts the guide cam surface 22b and guides the guide in the lateral direction from the moved position.

Reference numeral 25 indicates the base plate 1 of the carriage 17 so as to correspond to and be located behind both the movement imparting members 24.
As is clear from FIGS. 3 to 5, a long hole 25b is formed in the support piece 25a at the center of the upper end, and a pair of mounting plates are formed on both sides of the lower end. A guide piece 25c is provided.
Reference numeral 26 denotes a movement control member supported by the mounting plate 25 so as to be able to move up and down, and the projecting piece 2 at the center of the upper end of the movement control member 26
A roller 28 is attached to 6a via a support pin 27 passing through the elongated hole 25b of the support piece 25a,
The guide pieces 2 are attached to the horizontal pieces 26b on both sides of the approximately central part.
A guide groove 26c is formed to fit into the guide groove 5c.

29 is in contact with the rear end of the knitting needle 4 located at the upper position behind the movement imparting member 24;
It is a movement control piece formed at the lower ends of both movement control members 26 in an oblique shape toward the rear of the lower part, and on both left and right sides thereof, there are inclined surfaces 29a that gradually incline downward toward the left and right center portions. is formed,
Among the knitting needles 4 participating in knitting which are given a backward movement action along the magnetic gradient guide surface 22a of the guide cam body 22 by the movement imparting member 24, as shown in FIG. Those that are not under the action of the plate 9 allow the aforementioned backward movement while deflecting downward against the elasticity of the elastic member 5, while those that are under the action of the handle plate 9 as shown in FIG. , is adapted to be restrained against the action of the movement imparting member 24.

As described above, the movement control member 26 has a lower operating position in which the movement control piece 29 at the lower end contacts each knitting needle 4 to move them backward and exerts a restraining action, and a position in which the movement control member 26 is retracted upward from that position. The mounting plate 25
and the movement control member 26, and is biased and held in the operating position by a spring member 30 having a stronger elasticity than the elastic member 5, and is received by the upper support member 6 as shown in FIG. When the movement control piece 29 comes into contact with the knitting needle 4 in the rest position, the movement control piece 29 is moved toward the inactive position against the elasticity of the spring member 30. Therefore, the butt 4a of each knitting needle 4 is moved backward or given a restraining action by the movement control member 26 in the action position.
As shown in FIG. 5, the guide cam body 22 is moved backward along the front end thereof, and
is separated from the front end and moved laterally.

Reference numeral 31 denotes guide cams disposed on both sides of the lower surface of the base plate 18 of the carriage 17 in front of the guide cam body 22, and as shown in FIG. An auxiliary magnet 32 is provided so as to correspond to the butt 4a of the knitting needle 4, which is spaced apart from the front surface of the guiding cam body 22 by the movement control member 26.
is attracted by the auxiliary magnet 32, and then guided laterally along the rear surface of the guide cam 31 to the carriage 1.
It is designed so that it can escape from the bottom surface of 7. 33
is a sorting and enlarging cam disposed behind the guide cam 31, which is allowed to move rearward by the movement control member 26, and is moved rearward along the front surface of the guide cam body 22 to extend from its outer end to the side. The butt 4a of the knitting needle 4 guided in the direction is
After moving it further rearward, it is guided laterally to escape from the underside of the carriage 17.

Next, the switching operation mechanism provided on the top surface of the base plate 18 of the carriage 17 will be explained.
Reference numeral 4 denotes a retaining plate supported so as to be movable back and forth by loosely fitting long holes 34a into mounting screws 35 set on the left and right sides of the upper surface of the base plate 18, as shown in FIG. On both sides of the front end, operating pieces 36 having an inclined surface 36 on the left side in the figure are respectively provided protrudingly, and when moved to the rear latching position, the needle bed is located at the rear end edge as shown in FIG. 1 to prevent the carriage 17 from floating up. A pair of engagement plates 38 are provided so as to be movable back and forth on the left and right sides of the rear end of the lower surface of the base plate 18, and an operating pin 38a is projected upward from the upper surface of the front end of the base plate 18 through a long hole in the base plate 18. When moved to the rear engagement position, the rear end engagement portion 38b engages with the engagement hole of the endless belt 16, as shown in FIGS. 1 and 6. Reference numeral 39 denotes operating pins protruding from the upper surface of the swing cam 23, which are connected to the base plate 1.
It protrudes upward through the through hole 8.

Reference numeral 40 denotes a sliding plate supported so as to be movable from side to side by loosely fitting long holes 40a into shaft pins 41 set on the left and right sides of the upper surface of the base plate 18 on the hanging plate 34, as shown in FIG. Three locking recesses 40b that engage with elastic locking plates 42 on the base plate 18 are formed at the center of the front end so that it can be moved to three positions. Reference numeral 43 denotes an operating knob that is fitted and supported by one of the shaft pins 41, and a sliding plate 40 is provided at the bottom of the operating knob.
A pinion 45 is provided which engages with a rack 44 formed on one side of the front end of the slide plate 40. By rotating this operation knob 43, the sliding plate 40 is moved to the three positions mentioned above, and the movement is performed. Control member 2
6. Engagement plate 38, swing cam 23 and locking plate 3
4-related operations are controlled.

That is, 46 is a substantially V-shaped cam recess formed on the left and right sides of the upper surface of the rear wall of the sliding plate 40, and as shown in FIG.
8, the movement control member 26 is raised at the position of the sliding plate 40 and lowered at the position of the sliding plate 40. 47 is a substantially inverted triangular cam hole formed on the left and right sides of the sliding plate 40 at the rear of the elongated hole 40a, and as shown in FIG. The engagement plate 38 is engaged with the operating pin 38a, and is moved forward at the position of the sliding plate 40, and retracted at the position of the sliding plate 40. Reference numeral 49 denotes a cam groove provided with grooves formed on the left and right sides of the sliding plate 40 inside the cam hole 47 and inclined in the same direction.As shown in FIG. The other end of the elastic connecting rod 50 with one end hooked to the operating pin 39 of 23 is inserted, and the swing cam 23 is rotated at the position of the sliding plate 40 to the state shown in FIG. It is designed to be rotated to the state shown in FIGS. 5 and 6. Reference numeral 51 denotes actuating pieces provided at both front ends of the sliding plate 40, and as shown in FIG. 34
is moved backward at the position of the sliding plate 40, and moved forward at the position of the sliding plate 40.

The operation of the needle selection device for a knitting machine constructed as described above will now be described.

Now, in FIG. 6, the sliding plate 40 is moved to the center position, and the movement control member 26 is moved downward so that it can come into contact with the rear end of the knitting needle 4, as shown in FIGS. 1 to 3. The swing cam is disposed at the operating position, the rear connecting position where the engaging plate 38 engages with the endless belt 16, and the rear engaging position where the locking plate 34 engages with the rail portion 37 of the needle bed 1. 23 is shown in the rotational position shown in FIGS. 5 and 6.

In this state, when the carriage 17 is slid in the direction of the arrow in FIG.
1 and the guide cam body 22 along the swing cam 23
The magnetic gradient guiding surface 22a of the guiding cam body 22 is guided to align with the front end of the guiding cam body 22 by the magnetic absorption force of the movement imparting member 24.
It is attempted to be moved sequentially backward along the . Then, the rear end portion of each knitting needle 4 comes into contact with the movement control piece 29 of the movement control member 26 located at the operating position behind the movement imparting member 24. At this time, as is clear from FIGS. 2 and 3, the knitting needles 4 corresponding to the descent prevention projections 9a of the handle plate 9, which are in the inactive position of the descent prevention member 7, resist the elasticity of the elastic member 5. Since the rear end portion can move downward, as the movement imparting member 24 moves backward, the movement control piece 29 is tilted backward, passes under the lower end of the movement control piece 29, and is moved rearward. Moreover, as is clear from FIGS. 1 and 3, the handle plate 9 in the operating position
Since the rear end of the knitting needle 4 corresponding to the lowering prevention protrusion 9a is prevented from lowering, the backward movement by the movement imparting member 24 is restricted while in contact with the movement control piece 29, and the knitting needle 4 is moved in the lateral direction. will be moved.

That is, each knitting needle 4 moves slightly in the front and back direction near the magnetic gradient guide surface 22a of the guide cam body 22 due to the cooperative action of the movement imparting member 24 and the movement control member 26 even based on the selection action of the descent prevention member 7. The butts 4a of the knitting needles 4 sorted at different positions and sorted forward as shown in FIG.
The butts 4a of the knitting needles 4, which have escaped from the range of the magnetic force and are attracted by the auxiliary magnet 32, are moved in the transverse direction along the rear surface of the guide cam 31, escape from the lower surface of the carriage 17, and are sorted backwards by the guide cam. body 2
After being moved rearward along the magnetic gradient guide surface 22a of No. 2, it is moved laterally from the retreated position along the magnetic guide cam surface 22b, and then moved rearward by the sorting and enlarging cam 33 to touch the lower surface of the carriage 17. escape from

Therefore, each knitting needle 4 participating in knitting is sorted into two positions, front and back, on the needle bed 1, and the carriage 17 is moved to the fifth position.
When sliding in the direction opposite to the arrow in the figure, each knitting needle 4
The butt 4a is introduced into either of the butt passages x and y on the lower surface of the carriage 17, and a knitting operation of two-color simultaneous knitting is performed as the yarn is fed from the yarn feeder at two positions, front and back, relative to the hook of the knitting needle 4.

In addition, when this carriage 17 is sliding,
When the control piece 29 of the movement control member 26 in the lower working position acts on the knitting needle 4 which is placed in the rear rest position and does not participate in knitting, the rear end of the knitting needle 4 in the rest position will move as shown in FIG. As shown, since it is supported on an upper support member 6 provided on the needle bed 1, the lower end edge of the control piece 29 sequentially contacts the upper surface of the knitting needle 4 from its both side inclined surfaces 29a, and the movement control member 26 is moved by the spring. The member 30 is moved upwardly from the active position toward the non-active position against the elastic force of the member 30.

Next, when the sliding plate 40 is moved to the right position using the operation knob 43 on the top surface of the carriage 17 from the state shown in FIG. The swing cam 23 is placed in an upper inactive position where it does not make contact, and in a forward uncoupled position where the engagement plate 38 is separated from the endless belt 16.
are respectively switched to the rotational positions shown in FIG. 7 in which the inner end of the rear butt passage of the guiding cam body 22 is opened, and
The locking plate 34 is placed in the rear engagement position where it is engaged with the rail portion 37 of the needle bed 1. In this state, when the carriage 17 is slid in the direction of the arrow in FIG. 5, the butts 4a of each knitting needle 4, which have finished the knitting operation and have been retracted by the lowering cam 21 on the right side in the same figure,
is guided in the transverse direction through the rear butt passage of the guide cam body 22 without being affected by the movement imparting member 24 and the movement control member 26, and the carriage 1
Escape from the bottom of 7. Therefore, the carriage 17
When sliding in the direction opposite to the arrow in Figure 5,
The butt 4a of each knitting needle 4 is introduced into the butt passage y, and a flat knitting operation is performed.

Further, when the sliding plate 40 is moved to the left position from the state shown in FIG. 6, the movement control member 26 is switched to the upper inactive position, the engagement plate 38 is switched to the front uncoupled position, and the swing Cam 23 is the fifth
It is placed as it is in the rotational position shown in the figure and FIG. At the same time, as the sliding plate 40 moves, the vertical grooves 51a of the operating pieces 51 on both sides engage with the inclined surfaces 36a of the operating pieces 36 on both sides of the locking plate 34,
The latching plate 34 is moved to a disengaged position at the front where it is disengaged from the rail portion 37. Therefore, the carriage 17 can be removed upward from the needle bed 1 in this state.

As described above, in particular, this invention makes contact with the rear end of the needle shaft of the upper sewing needle 4 participating in the knitting at a position corresponding to the rear of the movement imparting member 24 on the rear side of the carriage 17. Among the knitting needles 4 that are horizontally installed in a possible position and are subjected to the action of the movement imparting member 24, the lowering prevention protrusion 9 of the handle plate 9
While deflecting the rear end of the needle shaft downward while not receiving the action of a, allowing it to move backward,
A movement control member 26 that restrains the rear end of the needle shaft of the needle shaft which is subjected to the action of the descending prevention protrusion 9a against the action of the movement imparting member 24, and a movement control member 26 that controls the movement control member 26 to the needle of the knitting needle 4 in the above-mentioned upper position. A mounting member 25 that is movably supported between a lower working position where it can engage with the rear end of the needle shaft and an upper non-working position where it cannot engage with the rear end of the needle shaft, and the movement control member 26 are always connected. The spring member 30 is biased toward the active position by a force stronger than the elastic means 5, and is movable left and right by manual operation, and the movable member 26 is inactive at a predetermined position of the movement. A sliding member 40 is provided at the same position and allows the movement control member 26 to move downward to the operating position by means of a cam recess 46 at another predetermined position of movement. Therefore,
In the needle selection operation state in which the movement control member 26 is disposed at the lower operation position, even if the carriage 17 is moved from the knitting section to the outside thereof, the movement control member 26 does not touch each knitting needle 4 at the rear rest position. Because it easily avoids upwards due to contact, the carriage 1
There is no hindrance to the sliding movement of the knitting section 7, and the needle selection operation for the knitting section can be carried out smoothly and accurately. In addition, in the needle selection inactive state where the movement control member 26 is placed in the upper non-action position, the movement control member 26 cannot contact all the knitting needles 4, so when knitting, such as flat knitting, etc. Carriage 17
can be slid easily. Furthermore, since the movement control member 26 is provided on the rear side of the carriage 17 and acts on the rear end of the needle shaft of the knitting needles 4,
This provides excellent effects such as the ability to significantly simplify the configuration of the needle selection cam portion through which the butt 4a on the lower surface of the carriage 17 passes.

[Brief explanation of the drawing]

1 to 9 show an embodiment of a knitting machine embodying the present invention, FIGS. 1 and 2 are longitudinal sectional views of main parts of the knitting machine showing the needle selection state, and FIG. 3 is a carriage. 4 is an exploded perspective view showing an enlarged movement control member, FIG. 5 is a bottom view of the carriage, and FIG. 6 is a cutaway plan view of the main parts of the carriage in a state where it is switched to needle selection mode. Fig. 7 is a cutaway plan view of the main parts of the carriage in the state of switching to plain knitting, Fig. 8 is a longitudinal sectional view of the main parts of the knitting machine also in the state of plain knitting, and Fig. 9 shows the state of the knitting needles in the rest position. FIG. 2 is a vertical sectional view of main parts of the knitting machine shown in FIG. Needle bed...1, Knitting needle...4, Elastic member...5, Upper support member...6, Handle plate...9, Lowering prevention protrusion...
...9a, Carriage...17, Movement imparting member...
24, Mounting member...25, Movement control member...2
6. Spring member...30, Sliding member...40, Cam recess...46.

Claims (1)

[Scope of Claims] 1. On the needle bed 1, which supports a large number of knitting needles 4 so as to be movable up and down and back and forth and is always placed in an upper position by elastic means 5, the lower surface of each of the knitting needles 4 participating in knitting is selected. an upper support member 6 that receives the lower surface of the knitting needles 4 in the rear rest position that do not participate in knitting and positions the knitting needles 4 in an upper position; and a carriage 1 slidably mounted on the needle bed 1.
7 is provided with a movement imparting member 24 that sequentially acts on the butts 4a of the knitting needles 4 participating in knitting to move them backward, and the knitting needles 4 that are affected by the movement imparting member 24 are moved downwardly of the handle plate 9. In the needle selection device that sorts needles forward or backward based on whether or not they correspond to the blocking protrusion 9a, a needle that participates in the knitting is provided on the rear side of the carriage 17 at a position corresponding to the rear of the movement imparting member 24. The movement imparting member 2 is horizontally installed at a position where it can come into contact with the rear end of the needle stem of the knitting needle 4 which is positioned above the knitting needle 4.
Of the knitting needles 4 that have been affected by step 4, those that have not been affected by the descent prevention protrusion 9a of the handle plate 9 are allowed to move rearward while deflecting the rear end of the needle shaft downward, and the descent prevention protrusion 9a A movement control member 26 restrains the rear end of the needle shaft of the knitting needle 4 in the upper position, and a movement control member 26 that restrains the rear end of the needle shaft of the knitting needle 4 in the upper position, against the action of the movement imparting member 24. an attachment member 25 movably supported between a lower working position where it can engage with the rear end of the needle shaft and an upper non-working position where it cannot engage with the rear end of the needle shaft; and the movement control member 26.
a spring member 30 which always biases the 26 in the direction of the operating position with an elastic force stronger than the elastic means 5; A knitting machine characterized in that it is provided with a sliding member 40 which allows the movement control member 26 to be placed in a non-active position and allows the movement control member 26 to move downward to the working position by a cam recess 46 at another predetermined position of movement. needle selection device. 2. Sloped surfaces 29a are formed on both left and right sides of the portion 29 of the movement control member 26 that can come into contact with the rear end of the needle stem of the knitting needle 4, respectively, so as to gradually slope downward toward the left and right center portions thereof. A needle selection device for a knitting machine according to claim 1.