JPS6039780B2 - Back knitting device of automatic flat knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a purl knitting device for an automatic flat knitting machine, and in particular, to a purl stitch knitting device of an automatic flat knitting machine, in particular, a carriage moves across a needle bed, and each layer of the knitting needles arranged in rows on the needle bed is Automatic horizontal stripes are provided in which each knitting needle is controlled to move forward and backward through an electronic control means, and during the forward and backward movement of the needles, yarn feeding is controlled through a yarn end turning means which is also electronically controlled to perform a knitting operation. In the machine, a sub-needle having a stitch-transfer function is mounted near the yarn head turning means and is arranged opposite to the controlled operation of the edge needle on the side of the needle bed to transfer green stitches to and from each other. This invention relates to an improved technique in which the sub-needle itself receives yarn feeding and performs the stitch forming function, thereby making it possible to automatically knit purl stitches.

A carriage automatically traverses a needle bed with a large number of knitting needles arranged in rows using its own traveling drive means, and at each corresponding position of the row of bran needles, a linear motor for driving the needle butt provided on the carriage moves each needle. The needle hook is sequentially driven forward and backward, and the rotating thread opening device, which is also provided on the carriage, is driven to feed the thread so as to wind it around the needle hook that has advanced. A technique for automatically organizing operations by giving sequence control to them using an electronic control circuit is disclosed in Japanese Patent Application No. 158364/1983, previously filed by the present applicant.

In addition, there are no knitting cams on the underside of the carriage, and the functional elements on the carriage, which are self-propelled by their own drive means, rotate with the knitting needles under sequence control at each corresponding position in the silk needle row. In a system that advances automatic knitting by sequentially driving yarns and threads, in addition to this basic knitted fabric forming function, it also has the technology of widening the edges, which is difficult to wind, as well as sequence control. The reduction stitches by means of stitch transfer using the secondary needles operating inside the stitches and improved techniques for lace knitting and the like using this technique have been explained in detail in other patent applications. The present invention is a further improvement and development of the prior art, and in the sub-needle mechanism which has a stitch transfer function as described above, the hook of this sub-needle is connected to the hook of the main needle on the needle bed side. By adding a mechanical means to control the relative inclination of the needle, and in conjunction with its operation, feeding yarn to the needle itself to form stripes, it is possible to automatically control purl stitch and rubber knitting with the same machine. Its purpose is to provide a technology that enables the organization of

To explain an embodiment with reference to the drawings, in Fig. 1, which schematically shows the control system of the present invention, a needle bed 2 in which a large number of knitting needles 3 are arranged in a row as in the conventional method is moved back and forth in the left and right direction of the figure. The carriage 1 mounted on the carriage 1 is equipped with a needle butt drive motor, which will be described shortly, to move the knitting needles 3 forward and backward sequentially as they move from side to side, and is supported at the end of its output shaft via a reduction gear 6. A self-propelled motor 7 and the like that drive the pinion 5 are installed.

When this figure is viewed from the front, the lower side is the front side where the operator is located.Hereinafter, the front and back of the device will be referred to.At the rear of the needle bed 2, there is a rack 4 along its longitudinal direction.
is fixed, and the pinion 5 of the self-propelled motor 7 is meshed with it. The self-propelled motor 7 is a type of servo motor whose rotation is controlled reversibly, and in this embodiment, a pulse motor is used and is controlled by the output of a pulse motor drive circuit 8 connected thereto. It shows. Note that the amount of movement of the carriage 1 per step by the stepping drive of the moving motor 7 is set to be finer than the arrangement pitch of the green needles 3, so that a small motor capacity is sufficient. It is practical. The mechanism of the needle butt drive motor will be explained with reference to FIGS. 2 to 4. As shown by broken lines in FIG. Bat passage 9b and a fourth passage in the center thereof.
A guide slot 9 along the forward and backward movement direction of the rope needle 3 as shown in the figure.
A guide block 9 having a shape of c is attached to the lower surface of the carriage 1.

A movable head 10 that can slide back and forth using a guide slot 9c as a guide rail is suspended and supported by the following linear actuator type motor means. That is, the movable head 10 has a guide slot 9c on the upper surface of the carriage 1.
The bobbin 1 is fixed to the lower side of the bobbin 13, which sits astride the guide core 14 supported in parallel with the bobbin 1 and is slidably guided by the guide core 14.
3 slides along the guide core 14 with the movable head 10 when the movable coil 15 wound thereon is energized.
A pair of magnets 17, which are positioned sandwiching the movable coil 15 from both sides and are magnetized in opposition as shown in the example in the figure, are used as a field to generate such a linear disturbance force on the bobbin 13. 14 and are connected by front and rear bridges 14a to form one linear motor. In this case, a linear potentiometer 18 is attached to one side of the upper edge as a means for obtaining a feedback signal for controlling the operating position of the bobbin 13 via the servo amplifier 16, and its slider arm 18a is connected to the bobbin 13. The socket ga of the guide block 9 guides the butt 3a of the knitting needle 3 and aligns it with the position of the butt passage 9b. When the self-propelled motor 7 is driven, the carriage 1 The sliders a and lb slide in the left-right direction along the rails 2a and 2b on the needle bed 2 side, and at this time the knitting needles 3 are sequentially moved so that the butt 3a and the butt passage 9b
This is how the guide slot 9 is introduced.
The needle butts 3a that have reached the position c are each sequentially captured by the movable head 10, and are given control over their forward and backward movements outside the IJ near-motor. In this case, as a means for detecting the synchronized position at which the needle butt 3a can be gripped and driven by the movable head, a light source 11a and a phototransistor 11b are opposed to each other with the butt passage gb on both sides of the guide slot 9c. When the butt sensor 11 that detects the arrival of the needle butt 3a within the opposing gap produces its detection output, the arrangement pitch of the knitting needles 3 is adjusted such that the other needle butts 3a are positioned at the center of the movable head 10. A pair of them is installed in the guide block 9 in a relative relationship with the guide block 9. The detection output of the butt sensor 11 is
The signal is transmitted via the signal waveform shaper 12 to a control circuit 38, which will be described later. The carriage 1 of the present invention includes a guide block 9 for introducing the needle butt 3a into the linear motor as described above, which corresponds to the knitting cams of a conventional knitting machine, and a guide block 9 for introducing the needle butt 3a into the linear motor. The underside of the carriage has a significantly simple mechanism, consisting only of the movable head 10 that grips and drives the carriage forward and backward. And the operation of organization by this is,
As illustrated in FIG. 3, the knitting needles 3 are advanced from the preparation position shown by the solid line as shown in FIG. 1 moves one stitch and advances the next stitch. At this point, if the movable head 10 is given control to stop its operation, the knitting needles 3 at this time are controlled to knit with a smooth stitch that does not move forward and receive no yarn feed, and In the case of intermediate forward control such as positioning, tuck knitting control is given to the knitting needle. Regarding the knitting control by controlling the forward position of the knitting needles via a near motor, the details are disclosed in the above-mentioned specification of Tokuiso Sho 53-158364, previously filed by the present applicant. A turning yarn opening mechanism is provided on the front side of the carriage 1 as a means for feeding yarn to the hooks of the advanced knitting needles. The bracket 19 that supports the thread opening mechanism also supports a sub-needle mechanism that performs the function of transferring stitches between the hook 3b of the knitting needle (hereinafter also referred to as main needle) 3 on the needle bed side. So, Figures 2-3 and 5-
As shown in Fig. 6, the base end is supported by the front green of the carriage so as to extend forward from the carriage 1 along the operation center line of the needle butt drive linear motor, and the front end thereof faces the main needle hook 3b. A support drive mechanism for an auxiliary needle (hereinafter referred to as a auxiliary needle) is provided by side plates 19b and 19c supported in parallel and suspended below the front end side of the bracket 19 at the lower part of the turning yarn opening means configured to feed the yarn. is supported.

First, to explain the means of turning thread, on the extension of the main needle 3 in the forward direction, which is controlled to advance and retreat, the main needle hook 3b is in the forward position.
On the other hand, the looper shaft 20 is rotatably supported within the front top portion of the bracket 19 via a subtie 19a so that its own vehicle extension line crosses diagonally from above. A thread opening looper 21 is supported so as to protrude further from the tip of the looper shaft 20 facing the main needle, and whose tip rotates circumferentially so as to surround the tip at a position where the main needle hook 3b moves forward. A thread hole 21a through which the knitting yarn is inserted is provided at the rotating end of the thread looper 21. A tooth gear 20a is integrally formed at the other end of the looper shaft 20, and a tooth wheel 20a
The teeth on the circumferential surface of the bracket 19 mesh with a pinion 22a fixed to the output shaft of a thread motor 22 mounted on the front end of the top of the bracket 19. And on the bracket 19, there is a clue looper 21.
In order to detect the state in which the thread hole 21a is directly above the main needle hook 3b, an output signal is generated when the small hole 20b, which is bored between the teeth 20a and the thread hole 20a, is in the pinching position. A photo sensor 23 is supported. Next, the structure of the dance needle in which the hooks are joined and separated from each other to the main needle 3 on the needle bed 2 side to transfer stripes will be explained with reference to FIGS. 7 and 8.

The name ``Mai-nee'' comes from the fact that the main needle 3 performs an active dance-like movement, as opposed to the static movement of advancing and retreating. It can be said to be an automated version of the rubber knitting work performed by a hand knitting machine operator using a device usually called a ``tappi'' to which a stockinette needle is fixed, and consists of the following mechanism. That is, as described above, the bracket 19 has a part that hangs downward at the front part, and parallel side plates 19b, 1 of the hanging part.
The needle 2 is supported by a traveler 25 configured to be guided along parallel rails 24 formed on the surface of 9c.
6, a moving needle motor 27 for gripping the traveler 25 and giving it such movement is mounted on one bracket side plate 19.
It is attached to b. This spindle motor 27 also uses a pulse motor like the above-mentioned yarn head motor 22, but a swing arm 28 is supported on an output shaft with increased torque via a gear box 27a, and a slot 2 formed at the swing end side of the swing arm 28 is attached to an output shaft with increased torque.
At 8a, one of two guide posts 25a protruding from each side of the traveler 25 is grasped to transmit the motion.
The rail 24, which guides the movement of the traveler 25, consists of three continuous sections. First, there is an upper horizontal portion 24a parallel to the forward and backward direction of the main needle 3, and a portion of the horizontal portion 24a below the tip approaching the main needle hook 3b and the main needle hook 3.
The arc portion 24b descends in an arc shape so as to sink below b, and the arc portion 24b extends downward from the lower end where the tangential direction approaches the horizontal after passing through an arc of about 1/4 of one circle. The horizontal section 24a and the ascending/descending section 24c are arranged on both sides of the traveler 25. The groove width is such that the guide post 25a, which is independent of the guide post 25a, is guided in parallel to the longitudinal direction of the needles 26, which is the tandem direction of each series, and the arc portion 24
b is the width of the groove in which the guide post 25a is guided while keeping the extension of the guide post 25a in the tandem direction directed toward the radial center of the arc portion 24b. Here, the position of the radial center of the circular arc portion 24b is located in front of the sinker needles 29 arranged in a row on the front edge of the needle bed 2 like in a conventional hand knitting machine, so that the main needle 3 is driven forward during tuck knitting. The position is set to be approximately equivalent to the position occupied by the needle hook 3b in a given case, and this position is set so that the position is approximately equal to the position occupied by the needle hook 3b in a given case. It approaches the needle hook 3b at the rest position and becomes the center of rotation of the dance needle 26 when giving and receiving side stitches between the hooks. In order to perform such a turning motion on the dance needle 26,
Forehead motion guide means is provided for causing the traveler 25 to assume the above-described posture while sliding on the arcuate portion 24b of the rail. That is, a pair of guide plates 30 are attached to both sides of the bracket's side plates 19b and 19c, spaced apart from each other so as not to touch the protruding top of the guide post 25a of the traveler passing through the rail 24. A guide slot 31 is carved in the guide plate 30 so as to be parallel to the rail arc portion 24b so that the arcs overlap at the same radial center when viewed from the side. However, the guidedos.
The arc length of the cut 31 is longer than the bottom arc portion 24b, and extends upward by approximately 50% from its upper end. A swing carrier 33, which is guided stepwise by the guide slot 31 with a pair of guide pins 32 provided on both sides thereof, moves between the spaces between the guide plate 30 and each of the side plates 19b and 19c. It is provided so that it can move in parallel. Since the guide pin 32 is similarly guided along the guide slot 31 in tandem on both sides of the swing carrier 33, with this movement, the swing carrier 33 itself faces the crown hook 3b. I make a oscillation that changes the angle of elevation. Then, so that the tilt caused by the rocking is directly applied to the traveler 25, the guide pin 32 is parallel to the rail horizontal part 24a at the upper end position of the vertical movement along the guide slot 31, and is parallel to the rail vertical part 24c at the lower end position. They overlap to form a fork 33a that receives the guide post 25a when the traveler 25 approaches from the respective rail side. As a result, when the swing arm 28 continues to transmit the current movement to the traveler 25 with the guide post 25a extending over the slit of the fork 33a, the traveler 25
is held by the swing carrier 33 and reaches the other end of the rail arc portion 24b while being subjected to the disturbance caused by the arc movement, and further by the subsequent movement of the swing arm 28,
From now on, when the traveler 25 moves to escape from the fork 33a and sets the lower part of the rail lifting section 24c (hereinafter also referred to as the initial setting position) as the female stand point, the movement of the traveler 25 will first be to rise and move the guide hook 26a. The traveler 25 is pushed up, and then the travel needle 26 rotates around the vicinity where it intersects with the main needle advancement path just before the sinker needle 29 below the hook 26a.
The traveler 25 rotates and rises, and with the travel needle 26 in a horizontal position, the traveler 25 disengages from the swing carrier 33 and slides toward you along the rail horizontal portion 24a. In the support operation mechanism for the needle 26, the movement needle support structure of the traveler 25 is configured such that when the movement needle 26 is in a horizontal position,
The direction of the copper of the own hook 26b is about 4 from upward to one side.
It is biased and supported in such a way that it becomes a nuisance of 5o, and the 9th
To explain this with reference to the figures and FIG. 10, the fly needle 26 is supported by a traveler 25 so as to be rotatable through a limited angle, and at the base of the support, the fly needle 26 is bent into a crank shape. The swinging portion thereof passes through a slot 25b at the end of one side wall of the traveler 25 and is exposed. A spring 43 is provided on the surface of the traveler 25 to bias the exposed tail portion 26b of the fly needle so that it is unevenly distributed at one end of the slot 25b. Normally, the hook 26a is oriented approximately 45 degrees upward to provide elasticity to maintain the posture. The travel needle 26 is not in a horizontal position, that is, the traveler 25 is in the rail arc portion 2.
At the lower position immediately after entering the downward stroke along line 4b, the dance needle tail part 26b is swung against the spring 43,
Raise the needle hook 26a as shown by the phantom line in FIG. In order to cause the movement needle 26 to rotate against the spring 43, a rail arc portion 24b is provided on the inner surface of one side plate 19b of the flaket.
A rib 44 is attached along the negative side of the lifting portion 24c. The upper end of the rib 44 reaches slightly above the middle of the rail arc portion 24b, and its tip 44a rises like a knife edge from the surface of the side plate 19b to increase the rib height, and thereafter the rib height is uniform. Continue straight to the bottom. And the rib height is
The tail portion 26b of the needle is in contact with the rib 44 to provide swinging of the slot 25b toward the end of the slot 25b against the spring 43, and to keep the needle hook 26a erect when the needle 26 is in a non-horizontal position. It gives the effect of As described above, as the needle 26 rises and falls, in its rising and falling state,
The needle hook 26a is approximately 4.
Since they face each other at an angle of 50 degrees, when the traveler 25 rises and starts to move forward along the horizontal part 24a of the needle, the fly needle 26a faces each other on the main needle hook 3b, and the forward movement occurs when the needles 26a and 26a face each other on the main needle hook 3b. By moving from the female joining point, each other's hook 3
In the engaged state in which the needles b and 26a are intertwined, the action of pulling the main needle 3 forward is given.

Then, the movement of the traveler 25 is opposite to the above, and the movement of the traveler 25 is
When starting from the front end of 4a, the fly needle 26 first moves to the main needle 3.
However, as will be described later, when the main needle 26 moves back and forth on the same line as the main needle 3 in an opposing crossing state, the needle butt 3a of the main needle 3 is controlled to be held at the A position by the linear motor. Although it is located at the bottom, when it is pulled out by the advance of the fly needle 26, the holding force at the A position is synchronously controlled to weaken so as not to interfere with it. When retracting, the force may remain weak, but in the example of the operation explanation described later, the holding force is restored, and the hook-branching state of both needles is tight, and the main needle 3 side pulls back the movement needle 26. Start it like this. In this way, at the end of the stroke of the horizontal portion 24a of the rail 24, the fly hook 26a goes a little beyond the retreat end of the main hook 3b, and is released from the mutual counterbalancing engagement, and the traveler 25 is moved to the swing carrier 33. Continuing on, the hook 26 raises its hook 26a in the stroke of the circular arc portion 24b, and makes a turn to raise its own posture, and then in the stroke of the lifting portion 24c. and then sink down as shown in Figure 7 while remaining in an upright position. A limit switch 34 is supported at the lower part of the bracket side plate 19c for detecting the location of the traveler 25 at the end point of the descent and generating an output signal. Returning to FIG. 1, the drive circuit 35 for the thread motor 22 and the needle motor 27 is connected to either side of the positive or negative input control terminals, similar to the pulse motor drive circuit 8 of the self-propelled motor 7 described above. This is a known method that causes each pulse motor of the load to rotate by an angle corresponding to each input numerical value of forward or reverse rotation depending on whether a signal is applied. The servo amplifier 16 also receives the needle butt advancement/retraction control signal from the control circuit 38 via the D/A converter 37, and compares the input analog amount with the feedback signal from the near potentiometer 18. The bobbin 13 of the linear motor is controlled to move forward and backward, and to maintain it in a straight position, and the edge needle 3 is driven and held at designated positions via the movable head 10. For example, as shown in FIG. 11, the circuit of the servo amplifier 16 is composed of a comparison circuit 16a and a differential increase circuit 16b that increases its judgment output, and uses its output to generate a driving force in the movable coil 15. . By the way, as mentioned above, when the striped needle 3 is pulled out from the hook engagement with the fly needle 26, the needle butt holding action at the position A in FIG. 3 is temporarily weakened, and the A power down circuit 36 is co-located. That is, the moving coil 15
A deenergizing resistor 39 is connected in series with the deenergizing resistor 39, and the deenergizing resistor 39 is normally short-circuited by the normally closed contact of the relay 40. According to the control output from 38, the relay 4
0 operates, the movable coil 15 is moved by the force reducing resistance 39.
The drive current of the linear motor is attenuated, and the needle butt holding force of the linear motor is weakened. As another input to the control circuit 38, the photo sensor 2 when in the upper central position of the clue looper 21
3 and the output of the slope limit switch 34 when the traveler 25 is at the lower end of the rail lifting section 24c are both transmitted to the control circuit 38 via the waveform shaper 12a. The control circuit 38 includes an input/output board 38a, a central processing unit 38b, and a read-only memory (hereinafter referred to as ROM) 38.
c, a read/write memory (hereinafter referred to as RAM) 38d, and a battery backup circuit 38e.
8c is an initial setting program for setting the above-mentioned linear motor, rotating yarn feeding mechanism, and needle mechanism to a knitting preparation state;
and each knitting program that selects and controls various knittings by commanding and controlling the forward position of the side needle 3, the yarn feeding operation of the thread looper 21, and the action of the moving needle motor 27, as well as each knitting program for each rope stage of these knittings. A knitting sequence program that stores the combination of stitch data for each needle in a memory format that roughly aligns the vertical and horizontal axes, a program for setting up the sequence, a program for reversing left and right mirror images of the pattern, and an operator When a key on the operation panel 41 is pressed to specify the type of knitting at any time, a program for changing the type of rope and the like is stored accordingly.
A control circuit 3 configured like a conventional computer
8, the control functions for the various operating elements for knitting will be explained using a flowchart. First, in FIG. 2 to one end, holding the thread looper 21 at the upper center position, and preparing the traveler 25 to the lowering position of the lower rail elevating section 24c. If we assume that the initial setting standby position is on the left side of the needle bed,
In response to the start command of this flow, the movable coil 15 of the linear motor is driven by the servo amplifier 16, and the movable head 10 is held at the position A in FIG. 3, where the rope needle 3 is at rest. Then, based on the output of the limit switch 34, it is determined whether the traveler 25 is at the initial setting position at the lower end of the rail elevating section 24c, and if negative, the movement needle motor 27 is driven to lower the traveler 25. Next, it is determined whether the yarn looper 21 is at the upper center position or not, based on the output signal of the photo sensor 23 of the yarn tip, and if the determination is negative, the yarn looper 21 is driven and rotated by the yarn looper motor 22 until the determination is positive. Here, in order to drive the self-propelled motor 7 to move the carriage across the needle bed 2 and bring it to the left end, it depends on whether or not the needle butt 3a is detected by the butt sensor 11 provided on the right side of the movable head 10. If negative, or if positive, the sensing state of the left butt sensor is also checked, and when the latter is positive, the self-propelled motor 7 is sent to the -pulse to drive the carriage 1 in the left direction. While the detection outputs of both the left and right butt sensors 1 are repeatedly appearing one after another by AND, the carriage continues to run to the left, and at the left end of the needle bed 2, the right butt sensor There is a detection output on the left side, but when the needle butt 3a is no longer detected on the left side, self-propulsion of the carriage 1 is stopped. This completes the initial settings. When the start of knitting is commanded, the carriage first runs by itself in a free feed to the start position needle of the specified knitting type according to the data from the ROM38c and the sequence output. The thread head motor 22 and the like remain at rest.

However, this blank feed is performed on the operation panel 4 regardless of memory data.
Needless to say, the number of stitches can also be set by key operation 1. In the operation of forming edges in flat knitting and tuck knitting, the movable head 10 of the linear motor drives the green needle 3 forward to the C position or the opening position in accordance with the data given to each needle, and then returns to the forward position. The yarn head motor 22 is driven with respect to the needle hook 3b, and the yarn head looper 22 is moved approximately 1/200 degrees to the side in the direction of movement of the carriage 1 in that knitting stage.
By making three rotations, the knitting yarn is fed in a winding manner, and in this state, the linear motor is operated backward to form a stitch, and the yarn looper 22 is driven and controlled to return to the upper center. This completes the sequence for one stitch, as shown in the aforementioned Tokubuta No. 53-158364. is in a resting state at the lower part and is not involved in the knitting operation, so a detailed explanation of this part will be omitted, and next we will explain the third section regarding the stripe forming effect of the purl stitch of the dance needle 26, which is the subject of the present invention. Figures and Figures 13-1
The sequence control operation shown in the flowcharts of FIGS. 18(a to 18c) will be explained based on the operation state diagrams of FIG. 7. To note here in advance, the functions of the dance needle 26 of the present invention are, in addition to the purl stitching function described below, the function of reducing stitches in each part of the nuka width, and also the lace pattern within the knitting width. However, all of these can be executed by assembling and preparing a sequence control program according to the purpose, and the explanation of these control examples is the same as that of the present invention. This invention was disclosed in another patent application, and the present invention is, so to speak, an addition of a back stitch functional means to the structure of the reduction means in this earlier application, and specifically, For example, this additional configuration is the above-mentioned means for controlling the rotation of the hook 26a between the horizontal position and the upright position of the rising needle 26, but the control sequence is significantly different from that in the case of the decreasing stitch. The main purpose is to feed the yarn to the main needle 26, and at this time, the rotation angle of the yarn looper 21 is also the same as the yarn feeding during flat knitting by the main needle 3.

1/3 rotation provides a different control.

Therefore, when purl stitching is commanded from memory data in the execution of knitting assigned to a certain knitting needle, the carriage 1 at that time is
First, depending on the direction of movement, the thread looper 21 is given a slight rotation control to the side opposite to the direction of movement.

In the example shown in Fig. 18a, the turning angle of the looper shaft 20 at this time is approximately 10 degrees. In order to suppress a malfunction in which the needle hook 26a accidentally eats the knitting yarn 42 held by the thread looper 21 during operation, the thread hole 21a is evacuated in advance from directly above the path of advancement and retreat of both needles.
The angle does not necessarily have to be on the order of 100, and any appropriate value may be used. Next, the travel needle motor 27 is activated, and the traveler 25 starts to rise from the initial setting position along the sear 24, raising and lowering the travel needle 26, and as shown in FIG. 13, the travel needle 26a is placed on the main needle hook 3b. At the timing when the two needle hooks 3b and 2 overlap, the power down circuit 36 is activated to deenergize the linear motor, and the traveler 25 is then moved forward along the rail horizontal portion 24a, and the double needle hooks 3b, 2
Pull the main needle 3 to the position shown in FIG. 3 while keeping it in the engaged state of the needle 6a.
At this time, the previous stitches held by the main needle hook 3b are passed over with a lance. Therefore, the action of the power down circuit 36 is canceled to restore the force for holding the main hand 3 in the A position due to the outside of the linear mode, and at the same time,
When the main needle motor 27 is driven in the reverse direction and both needles are moved backward while hooked, the stitch knocks over the main needle and moves to the main needle side, and then the traveler 25 moves the rail arc portion 24b as shown in FIG. As it descends in this manner, the stitch passes over the lance of the dance needle 26. After this rising, the fly needle 26 continues to control the fly needle motor 27 so as to stop at a point where the fly needle 26 has descended a little along the rail elevating section 24c as shown in FIG. 15. This stop position is the position where the dance needle hook 26a receives the yarn feed, and as shown in the figure, the dance needle hook 26a is connected to the sinker needle 29.
Position it just in front of and slightly above. At this time, the stitch is hooked just below the open latch 26c of the hook 26, and since the hook tail 26b is raised by the rib 44 as described above, the hook 26a is located at the front (as shown in the figure). It is facing towards the right. Then, the process shown in FIG. 18b is started, and depending on the row direction of the carriage 1 at that time, the thread looper 21 is again turned to the side corresponding to the traveling direction. The thread looper 21 is activated from the point where it had previously been given the retraction rotation of about 10 degrees to the opposite side, passes through the initial setting position in the upper center, and then rotates about 70 degrees, thereby hooking the needle. Yarn is fed to 26a. At this time, the yarn feeding rotation position of the yarn opening looper 21 is appropriately set from 450 to 80 degrees from the upper center, and as described above, it is much smaller than about 1/milk rotation when feeding the yarn to the main needle hook 3b.・Set the rotation control amount as follows. With the yarn looper 21 rotated in this manner, the drive of the needle motor 27 is restarted, and the traveler 2 is rotated as shown in FIG.
5 descends to the initial setting position, and at this time the stitches on the dance needle stem are knocked over and the dance needle hook 26a creates a new stitch. Therefore, the traveler 2 is controlled by reversely controlling the travel needle motor 27.
5 and push up the main needle hook 26a, the first
As shown in Figure 7, pass through the new green sub-flag and hang it on the main needle stem.

Then, by continuing to drive the main needle motor 27, the main needle 26
is laid down as shown in Fig. 13, the hooks of both needles overlap and face each other, and the linear motor is again reduced in energy to continue to move forward with both needle hooks connected, and the main needle hook 3b is pulled out to the opening position in Fig. 3. . As a result, the stitches of the dance needle 26 are knocked over and moved to the side of the main needle hook 3b, but remain on the hook without passing over the lance. Next, the needle butt holding force of the linear motor is restored, and the needle motor 27 is reversely controlled to move both needles backward, the main needle 3 is returned to the C position, and the needle 26 is moved to the standing position and both hooks are moved back. It releases polymerization and settles back to its initial position. Then, the yarn opening looper 21 is controlled to return to the center above the yarn feeding rotation position, thereby completing the purl stitch sequence for one stitch. The operation panel 41 has a ROM 38
The sequence program for intermittent knitting in which the data of each knitting row with the above-mentioned purl stitches is accumulated stored in c. From other knitting programs, operation keys for selecting and commanding and keys for creating and inputting knitting sequences are pressed. By operating this key group 41a, the operator can command the knitting type assigned to the key.

In addition, by key operation, you can input and store a combination of several types of formations in the RAM 38d to create a formation sequence, or you can R/R the formation data using a card, tape, etc. as a memory carrier.
By reading it into the AM38d, it is possible to switch between various knitting patterns and perform complex automatic knitting control. As explained above, the present invention includes a stitch driving means on the carriage, and each movement step of the carriage for each stitch on the needle bed. It is equipped with a near motor means for controlling the advance and retreat of the needle, and is provided on the front side of the carriage.
A rotation drive means for a yarn looper facing the needle hook in the forward position and rotating around it to feed the striped yarn carried thereon; ,
The needle hooks are raised so as to overlap and separate from each other, and by moving forward and backward together in this overlapping state, side stitches are exchanged, and in the state where a stitch is received, the needle hook itself also receives yarn feeding and creates a new stitch. This system is equipped with a support guide for the needle and its drive mechanism, and these are sequence-controlled outside the controller, and various formations are automatically performed as the carriage moves. Due to the presence of the thick needle mechanism, in addition to automatically knitting the knitting pattern and automatically knitting lace knitting patterns, it is also possible to perform back stitch knitting, making it possible to perform rubber knitting and garter knitting, and using the technology of the present invention. The horizontal stripe machine is extremely easy to handle and operate, and there are fewer errors even in complex knitting, for example, where the knitting type is changed for each stitch.
Moreover, it has many advantages as a new technology because it exhibits a variety of knitting functions with a simple mechanism that does not require a lace carriage or rubber machine for knitting purposes. .

[Brief explanation of drawings]

The figures show an example. Fig. 1 is a control system diagram showing a schematic plan view of the main parts of the mechanism plus a block diagram of the control part, Fig. 2 is a plan view of the mechanism part, and Fig. 3 is 4 is an enlarged sectional view of a main part along line W-W in FIG. 3; FIG. 5 is a partial sectional view showing the inside of a main part in FIG. 3; Fig. 6 is a partially exploded perspective view to explain the configuration of one main part, Fig. 7 is a front view of Fig. 2, Fig. 8 is a partially exploded perspective view to further explain the structure of the main part, and Fig. 9 is a Fig. 10 is an enlarged perspective view of only one main part, Fig. 11 is a circuit diagram of a portion of the control section, and Fig. 12 is a part of the control sequence. Initial settings flowchart,
Figures 13 to 17 are explanatory diagrams of operating states, and Figure 18a
Figures 18c to 18c are flowcharts of the control sequence for purl stitching. 1... Carriage, 2... Needle bed, 3...
Knitting needle, 3a...needle butt, 3b...(main) needle hook, 4
...Rack, 5...Pinion, 7...Match running motor, 8...Pulse motor drive circuit, 9...
...(Linear motor) guide block, 10...(
Movable head (of the linear motor), 11... Bat sensor, 13... Bobbin (of the linear motor), 14...
Guide core (of linear motor), 15... Moving coil (of linear motor), 16... Servo amplifier, 17...
... (linear motor) magnet, 18... linear potentiometer, 19... bracket, 19b, 19c
...... Bracket side plate, 20... Looper shaft, 21... Thread looper, 22... Thread motor, 23... Photo sensor, 24... ( 25... Traveler, 26... Mai needle, 26a... Mai needle hook, 27... Mai needle traveler, 28...
... Swing arm, 29 ... Sinker needle, 30 ... Guide plate, 31 ... Guide slot, 33 ... Swing carrier, 34 ... Limit switch, 35 ...
・Drive circuit, 36...Power down circuit, 37
...D/A converter, 38... Control circuit, 3
9...Neutral resistance, 40...Relay, 41...
・Operation panel, 42...knitting thread, 43...spring, 44...rib. Figure 1 Figure 3 Figure 2 Figure 4 Figure 5 Figure 7 Figure 9 Figure 180 Figure 6 Figure 8 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 183

Claims (1)

[Claims] 1. A flat knitting machine in which a carriage runs along a needle bed in which a large number of knitting needles are arranged in rows, the knitting needles are sequentially advanced and retreated as the carriage moves, and yarn is fed to the knitting needles during the advance and retreat to form stitches. On the carriage, a driving force means for self-propelling the carriage, a linear motor for sequentially gripping and driving the butts of the knitting needles to move them forward and backward, and a hook for the knitting needles driven forward by the linear motor. A yarn looper that feeds the knitting yarn carried thereon so as to wind it by turning around the yarn looper, a turning drive means for the yarn looper, and a hook of a knitting needle driven by the linear motor. The hooks of the knitting needles, which are placed facing each other in front of the knitting needles, face each other and overlap each other, and pull the knitting needles in a mutually engaged state to pull out the knitting needles. By raising the hook of the knitting needle, the traveler that pivots the knitting needle is guided so that the knitting needle is raised and moved forward and backward, and the knitting needle is detached from the hook and stands up in front of the knitting needle. A fly needle support and guide mechanism that tilts the hooks so that the hooks engage with each other during advance and retreat from the superposition, and raises the fly needle hook as the fly needle turns and stands; and a drive for raising and lowering the hook. and the means;
A control circuit including a memory storing knitting data and a control sequence program controls the self-propelled feed of the carriage for each stitch, and raises and lowers the fly needle by a feeding device to which the back stitch is given as the knitting data. The knitting needles are controlled to advance and retreat, and while the hooks are engaged with the knitting needles, the stitches are given and received while the hooks are engaged with each other. Feed the yarn to the hook of the knitting needle, and after feeding the yarn, let the needle sink to form a new stitch, and then move the needle up and down again to transfer the new stitch to the hook of the knitting needle. A purl knitting device for an automatic flat knitting machine characterized by automatically executing purp stitch sequence control.