JPH06200455A - Needle selector of flat knitting machine - Google Patents

Abstract

PURPOSE:To save the power cost and to miniaturize a knitting machine by reducing the sliding resistance accompanying insertion of a select jack butt into a needle groove in needle selection for knitting, and shortening the length of a needle bed in the sliding direction of a needle. CONSTITUTION:A select jack 9 the head part 12 of which is in contact with a selector 8 selected by an actuator 30A and with a needle 6 or the back surface of a needle jack 7 is vertically and slidably nipped by wires 14, 15, 24 and 26 set so as to cross a needle groove 4. In addition, a slope 27 is formed on the selector 8 so that the head part 18 thereof may come into contact with the wire 24 during elevation and sink. Further, a pair of higher and lower steps 17U and 17D are formed at a position where the selector head part 18 is in contact therewith on the select jack 9 and a slope 17S is also formed on the select jack 9 so that the head part 12 thereof may be engaged with the wire 15 during lowering movement and may be allowed to sink. A carriage is equipped with a select jack presser 54 and a select jack lowering cam 62 respectively having two-level heights and capable of sinking a select jack butt 16 to a pair of shallow and deep positions of the needle groove 4 so as to reduce abrasion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle selecting device for a flat knitting machine, and more particularly to a device for selecting a needle by an actuator through a selector and a select jack.

[0002]

2. Description of the Related Art In a conventional knitting machine, a movable cam such as a selector raising cam, a clear cam or an oscillating actuator is provided in a carriage needle selection portion, and therefore, these mechanisms are complicated and are also used for processing and assembling parts. It took time and cost.

Further, in order to prevent the needle at the B position from coming into contact with the knitting cam, the butt of the needle is pressed against the elasticity of the needle or the needle jack corresponding to the needle during knitting of the knitting fabric, so that the presser cam. Therefore, it is necessary to sink the needle in the needle bed, and there is a problem of wear occurring between the presser cam and the butt, a cause of sliding resistance occurring between them, and a problem of a large stress on the carriage.

Further, since a wide area of the needle selection portion is provided in the longitudinal direction of the needle groove, the needle bed and the carriage must be increased in size and weight.

[0005]

SUMMARY OF THE INVENTION In view of the above points, the present invention reduces the sliding resistance caused by pushing the butt into the needle groove during knitting, thereby causing the wear between the cam and the butt. To reduce the wear of them, reduce the power cost, shorten the length of the needle bed in the needle sliding direction, and reduce the length of the select jack and selector to downsize the knitting machine itself. The purpose is to

[0006]

Means for Solving the Problems A selector selected by an actuator, and a head corresponding to the selector, which is inserted into the needle groove and urged in a direction to protrude outside the needle groove, on the back surface of the needle jack. In a needle selecting device having a select jack in contact with, the selector and the upper and lower sides of the select jack are slidably held by a wire provided across the needle groove in the width direction of the needle bed. When the selector is raised, the slope of the selector jack that engages with the wire and sinks the selector head inward of the needle groove is located at the base of the select jack butt with which the selector head abuts. And the lower part of it engages with the wire that supports the select jack when it descends, and the head of the select jack is inward of the needle groove. Provided a slope soaking each, Shenzhen 2 the select jack butt is facing the top of the select jack butt into the carriage that reciprocates in the needle groove
A select jack presser having a two-step press surface that sinks into a position and a select jack lowering cam that lowers the select jack butt are provided.

[0007]

The selectors have corresponding select jacks, but when the carriage is located at the end of the needle bed, all the select jacks have their bats in the B position by the select jack lowering cams. At this time, the select jack is in a fixed state in which its head is slightly out of the needle groove, and further protrusion to the outside of the needle groove is prevented.

In the first selection process, the needle is in the B position and the other H position is in the A position. The slide tip corresponding to the needle that takes the H position and the A position is sucked by the actuator, and the slide tip corresponding to the needle that takes the B position is not sucked.

The sucked slide tip corresponding to the needle in the H position and the A position protrudes from the needle groove by passing through the slope of the chevron guide portion of the actuator in the suction state and abuts on the selector raising cam. The needle tip is raised in the needle groove, and the selector integrated with the slide tip is also raised in the needle groove.

The head of the selector comes into contact with the select jack due to the ascent of the selector in the needle groove, but the selector head is slightly pushed into the needle groove by the middle press surface of the select jack presser, and therefore the selector head. Corresponds to the upper engaging step portion of the select jack corresponding to the selector. The select jack is pushed by the head portion of the selector, moves up in the needle groove, and is positioned at the H position by the select jack guide cam. Due to the above engagement, the select jack at the H position is pressed by the select jack presser, and because the upper step portion is engaged with the head of the selector, it cannot be projected outside the needle groove and is sunk into the needle groove 4. When the push of the select jack presser is released by the progress of the carriage, the selector head is also pulled down by the selector guide cam, so the head of the selector is disengaged from the upper step of the select jack, and the select jack butt is also in the needle groove. It is in the state of coming out of In the above process, the needle corresponding to the select jack having the B-position bat and the needle corresponding to the select jack having the H-position bat are selected. The needle selected in the B position passes through the first actuator as it is because the select jack remains fixed and the select jack butt is also sunk.

By the subsequent movement of the carriage, the second
The second selection is performed by the actuator. The slide chip previously selected in the B position in the first selection passes through the second actuator as it is because the select jack corresponding to the slide chip remains fixed and the select jack butt is also sunk. A of the select jacks selected in the H position in the first selection
The actuator sucks the one corresponding to the needle that takes the position. The slide tip selected by suction is pushed up in the needle groove by the selector raising cam on the trailing side of the actuator, and the selector integrated with the slide tip moves up in the needle groove and the head of the corresponding select jack Push the lower step to raise the bat to position A. When the needle jack butt of the needle rises to the shoulder portion of the raising cam, the select jack bat is pushed by the presser and sinks into the needle groove, and the need jack butt breaks the contact with the raising cam to form a tack stitch. However, in the above knitting, when the select butt presser is provided at the H position, the needle corresponding to the needle jack butt raised to the H position becomes the tack stitch.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the embodiment of the present invention will be described with reference to the drawings.
In the device of the present invention, the needles are selected to three positions of A, B and an intermediate H position in the selection process. In this embodiment, the A, H, and B positions are the tuck, knit, and welt positions, respectively. Further, it goes without saying that the present invention can be carried out in the case of transfer. 1 and 2 show cross sections of the needle bed 1. By cutting a plurality of parallel grooves 2 in the needle bed 1 and inserting a needle plate 3 into the grooves 2, a needle groove 4 is formed between adjacent needle plates 3.
Is the same as the conventional knitting machine.

A band 5 is inserted into the needle plates 3 arranged in a row to fix their positions to each other, and the needles 6 and the like are prevented from falling off. A needle 6, a needle jack 7, a selector 8 and a select jack 9 are slidably inserted in the needle groove 4. Further, a spring 10 for positioning the select jack 9 is inserted with the position fixed. The spring 10 is inserted into the needle groove 4 in a state of being overlapped with the selector 8, and the thickness of the spring 10 and the selector 8 overlapped is the same as the thickness of the select jack 9. The needle jack 7 has its head engaged with the needle 6 and has a needle jack butt 11 in the center thereof, and the head 12 of the select jack 9 is brought into contact with the back surface thereof to move the head 12 out of the needle groove 4. It has elasticity in the protruding direction. The needle jack 7 is provided with a wire 1 provided in a direction crossing the needle groove 4 through each needle plate 3.
The maximum position of the needle jack butt 11 protruding out of the needle groove is regulated by abutting the back surface of the needle 3 on the back surface.

In the select jack 9, the head 12 is brought into contact with the back surface of the needle jack 7, and the back surface and the lower portion of the tail are brought into contact with the wires 14 and 15 provided on the needle plate 3 similarly to the wire 13, so that the needle groove 4 is formed. It is provided inside. The select jack 9 receives the elastic force of the above-mentioned needle jack 7 to project outside the needle groove on the head 12, and urges the select jack butt 16 provided on the head 12 out of the needle groove 4. Has been done. The most elevated position of the select jack 9 in the needle groove 4 is the position where the head 12 contacts the wire 13, and at this time, the select jack butt 1
6 is a position where it comes into contact with a tack presser of a carriage which will be described later. Steps 17U and 17D are provided at the top and bottom of the select jack butt 16, and an inclined surface 17S is provided below the steps 17D. The head 18 of the selector 8 can abut on either of the steps 17U and 17D. On the lower edge of the tail portion of the select jack 9, recessed portions 19, 20 for positioning,
21 are provided at three places, and are engaged with the wire 15 by the elastic force of the spring 10. As shown in FIG. 2B, the spring 10 locks the hook 22 and the stepped portion 23 of the head to the wire 24 and the wire 14, respectively, and the elongated tail portion 25 is brought into contact with the rear surface of the tail portion of the select jack 9, and the select jack is depressed. The engagement between the portions 19, 20, 21 and the wire 15 is ensured.

The selector 8 is slidably supported between the wires 14, 24 and 26 in a state of being superposed on the spring 10 and is prevented from falling off by the strip plate 5 at the tail portion of the needle bed. The selector 8 can raise the select jack 9 by bringing its head 18 into contact with one of the step portions 17U and 17D of the select jack 9 to raise it.

The selector 8 has an inclined surface 27 on the head 18, and when the selector 8 is raised, the inclined surface 27 has a wire 24.
By contacting the head portion 18, the selector 8 supports the head portion 18 between the wires 28 and 14 in a stationary state with respect to the needle groove 4. A recessed portion 28 is provided at the lower edge of the selector 8, and when the selector 8 is at the lowest position, the recessed portion 28 is formed.
And the wire 26 are engaged and positioned. A plate-shaped slide tip 29 is fitted to and supported by the tail portion of the selector 8. The slide tip 29 has a magnetic pole 31 of the actuators 30A, 30B, 30C and 30D at the upper edge of the plate-like body.
It is possible to contact A and 31B.

The carriage 40 will be described below. The illustrated example is a one-lock type, and shows a type in which two actuators are provided on the leading side of the lock and the needle can be sorted into three positions by one stroke movement of the carriage. On both sides of the lasing cam 42 provided on the main plate 41 of the carriage 40,
The slopes 43 and 44 are formed on the slopes 45 and 46 of the raising cam 42.
Installed so that it can be moved up and down. Guide cams 52 and 53 for guiding the needle jack butt 11 are provided below the crests 43 and 44. Since the guide cams 52 and 53 are symmetrical, only one guide cam 52 will be described, and the reference numerals of the parts having the same structure are the same. The guide cam 52 has a needle guide edge 4 which is continuous with the slope 45 of the lasing cam at the top.
6 has a chevron shape, and the lower portion is a select jack guide edge 48 having a recess 47 formed in the center. A recess 47 is provided below the recess 47 of each of the guide cams 52 and 53.
Select Jack Presser 5 with the same center line
4, 55 are provided.

Since the select jack pressers 54 and 55 have the same shape, only one of them will be described and the portions having the same structure will be denoted by the same reference numerals. The select jack breather 54 has slopes 56 and 57 on both sides thereof, and has a main plate 41.
Higher intermediate press surface 58 and slopes 5 on both sides
It has a high press surface 61 with 9,60. Then, on the surface 61, a select jack lowering cam 62 having a pointed tip facing downward so as to cover the slopes 59, 60 is provided so as to project. That is, the select jack lowering cam 62 is located in the recess 47 of the guide cam 52,
A groove 63, which serves as a passage for the select jack butt 16, is formed between the select jack lowering cam 62 and the guide cam 52 at the same height as the middle press surface 58. A tack presser 64 is provided below the raising cam 42. The select jack presser 64 is located at the A position.

Two actuators 30A, 30B and 30C are provided below the guide cams 52 and 53, respectively.
Sorting device 65A, 65B, 66A, 66 consisting of 30D
B is provided. Actuators 30A, 30B, 30C, 3
Since 0D has the same structure, the actuator 30A will be described. The actuator 30A has a magnetic pole 31A,
Two chevron-shaped guide portions 67 and 68 including 31B are provided in parallel with each other at a slight interval. Yamagata Guide 6
7, 68 magnetic poles 31A, 31A at the same time,
B and 31B are excited at the same time.

Since the chevron guide portions 67 and 68 have the same structure, the chevron guide portion 67 will be described. The most protruding portion 69 in the center of the chevron guide portion 67 is flat, and the slopes 70, 7 on both sides thereof are flat.
The magnetic poles 31A and 31B are located near the most projecting portion 69 within
Is provided. The magnetic poles 31A and 31B may be excited at the same time, or only the magnetic pole on the rear side in the traveling direction of the carriage may be excited.

Actuators 30A, 30B, 30C, 3
A selector guide cam 80 and a selector raising cam 81 are provided above and below 0D. The selector guide cam 80 guides the slide tip 29 of the selector 8 raised by the selector raising cam 81. The selector lasing cam 81 is provided with mountains 82 and 83 which come into contact with the slide tip 29 and raise the slide tip 29 to the maximum in the middle of the actuators 30A and 30B and the middle of the actuators 30C and 30D.
Mountains 84 and 85 are provided on the center side of the C carriage 40. Half of the ridges 84, 85 near the center of the carriage are formed with slopes 86, 87 so that the slide tip 29 that has advanced can get over the ridges. The height at which the selector raising cam 81 is provided is equal to that of the actuator 30.
A, 30B, 30C, 30D and the highest projecting portion 69 of the chevron-shaped guide portion 67 are set to the same height, and the actuators 30A, 30
The positions are such that only the slide tip 29 that is attracted by the magnetic poles 31A and 31B of B, 30C, and 30D and moves up the slope 71 is abutted. Actuators 30A, 30B, 3
A cam 88 for preventing steady movement of the slide tip 29 is provided at a position facing the chevron guide portions 67 of 0C and 30D.

Next, the operation of the above embodiment of the device of the present invention will be described. Now, assume that the carriage 40 moves from right to left in the direction of the arrow in FIG. 3 and tries to knit a course. At this time, since the carriage is moving in the counter-arrow direction from left to right in FIG. 3 during knitting of the previous course, the slide tip 29 of the selector 8 at that time causes the selector guide cam 80 and the selector raising cam 81 to move. From right to left, slide tip 29
When the slide tip contacts the ridge 84 of the selector raising cam 81, the slide tip is pushed into the needle groove by the slope 86 of the ridge 84 and thereafter passes through the actuators 30B and 30A without contacting the selector raising cam 81.
At this time, the slide tip 29 and the selector 8 integrated with the slide tip 29 are at the most lowered position in the needle groove 4.

On the other hand, the select jack 9 has the select jack butt 16 positioned at either the A position, the H position for the H position needle, or the B position for the B position needle if it is the A position needle. It is transitioning. When the select jack butt 16 is in the A position, the select jack butt 16 is pulled down to the H position by coming into contact with the select jack guide edge 51 of the guide cam 52, and comes into contact with the slopes 57 and 60 of the select jack presser to press the high position press. Face 6
To 1. Here, the select jack butt 16 contacts the select jack lowering cam 62 and is pulled down to the B position.

When the select jack 9 is pulled down by the select jack lowering cam 62, the select jack butt 16 moves the select jack presser 5 as described above.
It is most pushed into the needle groove 4 by the high press surface 61 of No. 4. Here, when the select jack butt 16 is pushed by the select jack lowering cam 62, the select jack 9 causes the step portion 17D to slip under the wire 14. Therefore, even if the pressing of the select jack presser 54 against the select jack butt 16 is released by the movement of the carriage 40, the select jack 9 is locked by the wire 14 and the select jack butt 16 cannot be projected further out of the needle groove 4. Absent.

When the select jack butt 16 is in the H position, the select jack butt 16 comes into contact with the slopes 57 and 60 of the select jack presser 54 and reaches the high press surface 61 as the carriage 40 moves in the direction opposite to the right direction. It is pushed down by the select jack lowering cam 62 and is brought to the B position like the select jack bat 16 at the A position described above. When the select jack bat 16 is in the B position, the select jack 9 is sunk into the needle groove 4 from the beginning like the select jack having the select jack butt 16 in the A position and the B position described above. Is Select Jack Presser 5
4, The B position is maintained without touching the select jack lowering cam 62 or the like.

Therefore, at the start of the course knitting, the slide tip 29 and the selector 8 are most pulled down in the needle groove 4 in the preceding course, the concave portion 28 is engaged with the wire 26, and the select jack 9 is the concave portion. By engaging 19 with the wire 15 and the lower step 17D with the wire 14 to bring the select jack butt 16 into the most depressed position in the needle groove 4, the positions of the selector 8 and the select jack 9 are fixed. Start a new course at the position. At this time, the slide tip 29 is positioned between the slide tip steadying cam 88 and the chevron guide portions 67, 68 of the actuator 30, as shown in FIG.

As described above, when the knitting of the previous course is completed by moving the carriage 40 to the right, the bats 16 of the select jack 9 are all in the B position.
When the carriage 40 moves to the left, knitting of the course is newly started.

In the knitting of the new course, as the carriage 40 moves to the left, the first stage needle is selected by the sorting device 65A including the actuator 30A on the leading side, and the needles at the H position and the A position are selected. After leaving the needle, the second step needle selection is performed by the sorting device 65B including the actuator 30B, the A position needle is selected from the previously selected H position and A position needles, and the H position needle is selected. Sort 3 needles by leaving.

Slide tip 2 corresponding to the needle to be selected
When 9 is opposed to the magnetic pole 31A, the actuator 30A is actuated to perform selection depending on whether the magnetic pole 31A is excited or not. The first selection will be described below, where the H-position and A-position needles are selected and the B-position needles are left.

The slide chip 29 corresponding to the H and A position needles is excited when it opposes the magnetic pole 31A of the actuator 30A, and the slide chip 29 attracted by the excitation of the magnetic pole 31A of the actuator 30A is the carriage 40.
2C, from the most protruding portion 69 of the chevron-shaped guides 67, 68 to the slope 71 of the chevron-shaped guides 67, 68 (C in FIG. 2), the slide tip 29 contacts its side edge with the crest 82 of the selector raising cam 81. , The slide tip 29 is pushed to the right as shown in FIG. 1B. At this time, since the select jack 9 is pushed deepest into the needle groove 4 as described above, the selector 8 integrated with the slide tip 29 has its head 18 at the base of the select jack butt 16 of the select jack 9. The select jack 9 is raised by contacting the upper step portion 17U at. Due to this rise, the lower step portion 17D of the select jack 9 and the wire 1
4 is disengaged, and the select jack 9 pushes the elastic force of the needle jack 7 and spring 10
The select jack butt 16 is projected to the outside of the needle groove 4 by the elastic force of and is positioned in the groove portion 63 between the guide cam 52 and the select jack lowering cam 62. Then, the concave portion 21 of the tail portion of the select jack 9 and the wire 15 are engaged with each other to fix the position of the select jack 9. At this time, the select jack bat 16 is in the A position.
The select jack 9 remains stationary while the slide tip 29 is in contact with the top of the mountain 82.

The slide tip 29, which has been in contact with the top of the ridge 82, is brought into contact with the sloped surface of the selector guide cam 80 by the subsequent movement of the carriage 40 and is lowered, and is brought into contact with the ridge-shaped guide portions 67, 68 of the actuator 30B. on the other hand,
The select jack butt 16 in the A position is lowered by the select jack guide edge 48 to the lowermost edge of the guide cam 52. This position is the H position.
Therefore, the slide tip 29 selected by the operation of the actuator 30A is the corresponding select jack bat 1
All 6 take the H position. The slide tip 29 is held by the slide tip guide cam 88 and the chevron guide portions 67, 68 at the central position of the chevron guide portions 67, 68. The slide tip 2
The descending movement of 9 also causes the selector 8 to descend to the maximum, and its head 1
8 is separated from the step portion 17U of the select jack 9.

When facing the magnetic pole 31A of the actuator 30A, the slide tip 29 whose magnetic pole 31A is not excited is not attracted by the magnetic pole, and therefore may contact the slope 71 of the chevron guides 67, 68. However, the butt 16 of the select jack 9 corresponding to the selector 8 integrated with the slide chip 29 maintains the B position, while maintaining the same posture as when the carriage started to move.

Next, the secondary selection is performed. First above
B-position select jack 9 left in the next selection
The slide chip 29 corresponding to is not selected even in the second selection and remains in the same position. The slide chips 29 selected at the H position in the first selection are selected, and the slide chip 29 at the A position is selected from the slide chips 29. That is, the actuator 30B selects the A-position one from the select jacks 9 having the H-position. When the slide tip 29 passes through the magnetic pole 31A of the actuator 30B, the slide tip 29 of the selector 8 that is set to the A position by being excited is attracted, abuts against the slope 71 of the chevron guide portion 68, and the slide tip 29 is brought into contact with the needle groove 4 Pull out from the mountain 8 of the selector raising cam 81
Abut 4 and raise it. At this time, the butt 16 of the select jack 9 that is in contact is in the H position as described above, the butt 16 is not pushed into the needle groove by any of the cams, and the selector 8 before rising is The head portion 18 of the selector 8 engages with the lower step portion 17D of the select jack 9 to move up from the lowest position.

Therefore, as the ridge 84 of the selector raising cam 81 of the slide tip 29 is raised, the select jack butt 16 is raised to the A position without being submerged in the needle groove 4.

When the slide chip 29 is not excited when passing through the magnetic pole 31A of the actuator 30B, the slide chip 29 remains in the H position, and the excited one is selected in the A position. Then, the butt 11 of the needle jack 7 protruding from the needle groove 4 as the carriage 40 advances is moved to the raising cam 42.
The select jack bat 16 in the A position is pushed by the select jack presser 54 when the needle jack butt 11 rises to the shoulder portion of the raising cam 42 to form a tuck knitting. Since the select jack butt 16 in the H position does not come into contact with the carriage as the carriage advances, it is not pushed down. Therefore, the corresponding needle jack butt 11 also keeps protruding from the needle groove, so that the raising cam 42 is The knit knitting is made by contacting the slope 45.

An embodiment of performing needle selection by preliminary needle selection using the device of the present invention will be described below with reference to FIG. In the present embodiment, two actuators 30A, 30B, 30C and 30D provided on the left and right below the raising cam 42 of the carriage 40 in the first embodiment and one actuator 30E and 30F on the left and right are provided. Therefore, the preliminary needle selection is performed in one stroke of the carriage, and the needles can be divided into three groups by further selecting the needles at the next reversal.

The configuration different from that of the first embodiment is that slopes 82a and 83a are provided on the side faces opposite to the actuators in the peaks 82A and 83A of the selector raising cam 81A located outside the actuators 30E and 30F. The point is that the middle press surface 58A of the select jack presser 54A is spread to the positions A, H, B on the side of the carriage.

Next, the operation of the second embodiment of the needle selection by the preliminary needle selection will be described. Now carriage 4
It is assumed that 0A moves from right to left in the arrow direction in FIG. 4 and tries to knit a course. At this time, since the carriage 40A is moving in the counter-arrow direction from left to right in FIG. 4 during the knitting of the previous course, at that time, preliminary needle selection is performed in advance, and the B-position needle and other portions are selected. Separate the needles. Then, when the carriage is moved in the opposite direction to the movement of the carriage during the preliminary needle selection, the remaining needles at the A position and the H position are divided into two-step needles. The slide tip 29 of the selector 8 advances from the right to the left between the selector guide cam 80A and the selector raising cam 81A when the carriage for preliminary needle selection moves to the right, and the slide tip 29 contacts the mountain 84A of the selector raising cam 81A. In this case, the slide tip is pushed into the needle groove 4 by the slope 86A of the ridge 84A without climbing the ridge 84A, and then the selector raising cam 8
The actuator 30E is reached without contact with 1A.
At this time, the slide tip 29 and the selector 8 integrated with the slide tip 29 are at the most lowered position in the needle groove 4.

The slide tip 29 is the actuator 3
When 0E is reached, preliminary needle selection is performed, and the select jack 9 that is in the A and H positions in the next course is selected. That is, when the actuator 30E is excited, the attracted slide tip 29 moves to the slope 3 of the actuator 30E.
It comes out of the needle groove 4 along with 0Ea and contacts the slope 82Aa of the selector raising cam 81A. The slant surface 82Aa raises the slide tip 29 to the top of the mountain 82A, and the selector 8 integrated with it also rises in the needle groove 4. At this time, it is located in the H position or the B position,
The select jack 9 corresponding to the lifted selector 8 has its butt 16 connected to the select jack presser 5
Sunk by 4A slope 57A, medium press surface 58A
And is slightly submerged in the needle groove 4. As described above, the selector 8 moves up to the select jack 9 in this state, and the head 18 of the selector 8 moves to the select jack 9
Select jack 9 while engaged with the upper step 17U of
Moves up and moves the butt 16 in the groove 63A between the guide cam 52A and the select jack lowering cam 62A.
Raise to position. Then, as the carriage advances, the bat 16 reaches the slope 56A, and the middle press surface 58
Although the pressure by A is released, the head 18 of the selector 8 is still engaged with the upper step 17U of the select jack 9, so that the butt 16 does not project further from the needle groove and maintains the A position.

The slide tip 29 which is not attracted because the actuator 30E is not excited advances while maintaining the same position and does not contact the ridge 82A of the selector raising cam 81A, that is, the selector 8 corresponding to the slide tip 29. Never rise. However, the select jack 9 in the H position or the B position corresponding to the selector 8 comes into contact with the select jack presser 54 as the carriage progresses, is most pushed into the needle groove 4 by the high press surface 61A, and is also the select jack. It is lowered to the B position by the lowering cam 62A.

Due to the pulling down, the lower step portion 17D of the select jack 9 is engaged with the wire 14,
Even if the pressing force to the inside of the needle groove 4 by the select jack presser 54 is released, the butt 16 still has the high press surface 6
The position is fixed without protruding beyond the position determined by 1A. In this way, as the preliminary needle selection, first, the needle selection is performed for two types of the B position and other positions.

Next, when the carriage is turned over, that is, when knitting a predetermined course, the carriage 40A moves leftward in the direction of the arrow contrary to the above. At the start of the left action, all the slide tips 29 are at the positions most lowered by the selector guide cam 80A and the selector lasing cam 81A. Then, as the carriage 40A advances, the slide tip 29 contacts the inclined surface 82a of the selector raising cam 81A, and the upper end edge of the slide tip 29 is sunk to the same height as the most protruding portion 69A of the chevron guide portion 67A of the actuator 30E. . In this state, the actuator 30E and the slide tip 29 face each other, but the slide tip 29 corresponding to the select jack 9 previously selected in the B position is allowed to pass through the actuator 30E without operating the actuator 30E.

The select jack 9 selected at the A position in the preliminary needle selection is divided into the A position and the H position in the following manner.

The slide chip 2 corresponding to the select jack 9 located at the A position by the left line of the carriage
At the same time as the slide tip 29 corresponding to the B position select jack 9 described above, 9 faces the actuator 30E in a state where the needle groove 4 is most pulled down. In sync with this, select jack bat 1 in A position
6 advances along the guide cam 52A, enters the groove 63A, and is pulled down by the select jack guide surface 51A.
All the select jacks 9 that were in the position are in the H position. After that, the actuator 30E is excited, and the slide chip 29 attracted by the excitation.
Is raised by the ridge 84 of the selector raising cam 81, and the selector 8 integrated with the slide tip 29 is also raised. At this time, the select jack presser 54A
Since the pressing of the select jack butt 16 by the is released, the select jack butt 16 is projected most outside the needle groove, and the head 16 of the selector 8 hits the lower step portion 17D of the select jack 9 due to the rise of the selector 8. Select jack 9 touched and pushed up by selector 8
Raises the bat to the A position.

On the other hand, the slide tip 29, which has not been attracted by the actuator 30E due to the excitation when passing through the actuator 30E, has the peak 8 of the selector raising cam 81A.
The butt 16 of the select jack 9 corresponding to the slide chip 29 remains in the H position because it does not come in contact with the 4A and does not move up and maintains its position. In the present embodiment, the needles selected for the A position, the H position, and the B position are the tuck knitting, the knit knitting, and the rest, respectively.

Next, another embodiment of the selector will be described with reference to FIG. In the other embodiments, the same members as those in the first embodiment are designated by the same reference numerals and the description or the description thereof is omitted.

The selector 8A of the third embodiment has a sloped surface 27 on the head 18, and when the selector 8A is raised, the sloped surface 27 is formed.
By contacting the wire 24 with the wire 24, the selector 8A is supported between the wires 24 and 14 so as to be immovable with respect to the needle groove 4, and the tail portion can be moved in and out of the needle groove 4 as described later. A concave portion 28 is formed on the lower edge of the selector 8A.
Is provided, and when the selector 8A is at the lowest position, the recessed portion 28 and the wire 26 are engaged and positioned. A plate-shaped sliding piece 29 is integrally provided at the tail portion of the selector 8A, and an upper edge 29a of the sliding piece 29 has a linear shape, and the actuators 30A, 30B, 30C, 30D, 30E, 30F.
The magnetic poles 31a and 31b of the above can be contacted.

A concave portion 8b is provided at the upper edge of the selector 8A, and an end portion is fitted and fixed to the concave portion 8b, and a spring 8s bent so as to project outside the needle groove is provided. The spring 8s comes into contact with the band 5 fitted to the needle plate 3 so as to cover the selector 8A, and causes the selector 8 to move into the needle groove 4
It plays the role of sinking inside.

In the selector 8A, the spring 8s provided on the upper edge of the selector 8A abuts on the band 5, and the elastic force of the spring 8s urges the tail portion into the needle groove 4 at all times. It is always away from the magnetic pole of the actuator when there is no selection by the actuator, and the tail slide tip contacts the magnetic pole only when the magnetic pole of the actuator is excited and selected.

[0050]

As described above, the device of the present invention is first of all
In the process, you can select the B position needle, and in the second process, you can select the A position needle from the needles that were not selected in the previous process and make the remaining H position needles. It means that it is only necessary to take two steps, that is, not to move and the select jack not to move. Therefore, it is possible to shorten the length of the select jack and selector,
Accordingly, the length of the needle bed in the needle groove direction can be shortened.

Further, by providing the select jack with two upper and lower step portions and changing the contact position with the selector, the moving range of the select jack can be increased even if the moving distance of the selector is shortened. Therefore, the length of the needle bed in the needle groove direction can be reduced. Further, unlike the conventional needle selecting device, it is not necessary to control the movable cam such as a mechanical actuator, so that the mechanism of the needle selecting device can be simplified.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a part of a carriage including an actuator and a needle bed, in which A indicates a state of a select jack or the like at a B position before and after the start of needle selection operation, and B indicates a first needle selection operation. The state of the H position at the end of the process is shown.

FIG. 2A is a vertical cross-sectional view of a portion of a carriage including an actuator and a needle bed, showing a state of the A position of a select jack or the like at the end of the second process of needle selection. B is a side view of the spring, and C is a side view of the chevron guide portion of the carriage and the selector lasing cam.

FIG. 3 is a plan view showing a carriage of the first embodiment.

FIG. 4A is a plan view showing a carriage of the second embodiment, B
FIG. 3 is a side view of a chevron guide portion of a carriage and a selector lasing cam.

5A and 5B show another embodiment of the selector, in which A is a vertical cross-sectional view of a part of the carriage including the actuator and the needle bed, B is a side view of the selector, and C is a side view of the spring.

[Explanation of symbols]

 1 Needle Bed 4 Needle Groove 6 Needle 7 Needle Jack 8 Selector 9 Select Jack 12 Select Jack Head 14, 15, 24, 26 Wire 16 Select Jack Butt 17U Upper Step 17D Lower Step 18 Selector Head 27 Slope 29 Slide Tip 30A, 30B, 30C, 30D Actuator 31A, 31B Magnetic pole 54 Select jack presser 58 Medium press surface 61 High press surface 62 Select jack lowering cam

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[Procedure amendment]

[Submission date] July 22, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Title of device for flat knitting machine

Claims (2)

[Claims] 1. A selector that is selected by an actuator, and a head corresponding to the selector is brought into contact with the back surface of a needle or a needle jack that is inserted into the needle groove and is biased in a direction to protrude outside the needle groove. In a needle selecting device having a select jack, the selector and the upper and lower sides of the select jack are slidably held by wires provided across the needle groove in the width direction of the needle bed. An inclined surface that engages with the wire and sinks the head of the selector inward of the needle groove is located at the base of the select jack butt with which the head of the selector comes into contact with the select jack. The slope that engages with the wire that supports the select jack when the select jack descends and sinks the head of the select jack inward of the needle groove. The select jack butt is provided in each of the carriages which face each other on the top of the select jack butt and reciprocate.
A needle selection device for a flat knitting machine, comprising a select jack presser having a stepped press surface and a select jack lowering cam for lowering a select jack butt. 2. A step portion of a select jack bat is provided above the pressing surface of the select jack presser on the side that sinks the select jack bat among the select jack pressers that have a height of two steps that sinks in the shallow second position. 2. The needle selection device in a flat knitting machine according to claim 1, further comprising a select jack lowering cam that engages with the wire.