JP2602746B2 - Rubber knitting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for knitting a highly elastic rubber knitted fabric using a flat knitting machine.

[0002]

2. Description of the Related Art A rubber knitted fabric knitted by a flat knitting machine provided with a pair of needle beds facing each other in abutting manner at the tips is pulled down by a pulling-down device provided below the needle bed. Once hung from the needle bed, the edge of the knitted fabric is distorted in a curved shape due to the downward pulling force on the knitted fabric and the contraction force of the rubber knitted fabric itself in the width direction of the knitted fabric.

[0003] This curved distortion is particularly noticeable in the case of a knitted fabric having elasticity such as a rubber knitted fabric. When the knitted fabric is pulled down in a distorted state, the tensile force at the edge of the knitted fabric is loosened as compared with the central portion of the knitted fabric. As a result, when the stitch is formed by the endmost knitting needles at both ends, the stitch of the previous course locked by the knitting needle remains near the knitting needle head without being knocked over from the knitting needle,
In some cases, a so-called "eye-cover" state is caused, which may cause a knitted fabric defect.

[0004] For example, this occurs particularly frequently when knitting a knitted fabric in which the stitch density is relatively high so as not to lose its shape, such as a collar, that is, knitting is performed with tight stitches.

[0005] In the case of knitting of a collar, the edge portion of the knitted fabric is a final product without any special treatment after knitting, so that the knitted fabric having the above-mentioned "closing" is provided. Also had the problem of becoming a defective product. Furthermore, there is also a problem that the characteristics of the knitting yarn itself used for knitting, for example, the difference in the twisting direction, the action of the knitting cam causes the stitches that have been lowered to become uneven, thereby deteriorating the quality of the knitted fabric. Was.

Therefore, conventionally, as a solution to the above problem,
A special bat that engages the knitting cam with the main body of the knitting needle that is responsible for knitting at the end of the knitted fabric when knitting the knitted fabric and moves the needle forward and backward is located slightly closer to the tip than other needles. The knitting cam of the previous course can be knocked over from the knitting needle by making the knitting needle at the extreme end of the knitting needle more widely drawn by the knitting cam. There is an arrangement in which the first knitting stitch cams are provided so as to be individually connected, and then knocked over by a subsequent second knitting stitch cam.

[0007]

However, in the former device, each time the knitting width of the knitted fabric to be knitted changes, the position of the special knitting needle must be changed in accordance with the knitting width, which imposes a burden on the operator. There was a problem to say that. Moreover, the use of the knitting needles specially shaped stitches formed by the knitting needles exert other adverse effect on the knitted fabric appearance becomes to that slightly different from the stitches formed by the knitting needle There was also the problem of getting lost.

In the latter case, it is necessary to significantly remodel the carriage in order to connect a plurality of knitting stitch cams having different drawing amounts to the carriage , and the remodeling of the carriage results in an increase in the size of the apparatus. trough consisting driving force is also required large in order to put away the sliding it
There was a cormorant problem.

The present invention has been made in view of the above problems, and when knitting a rubber knitted fabric using a flat knitting machine, it is not necessary to replace any knitting needles even if the knitting width of the knitted fabric is changed. It is an object of the present invention to provide a knitting device for a rubber knitted fabric that does not require a large-sized carriage and does not require a large change on the machine side.

[0010]

In order to achieve the above object, a knitting apparatus for a rubber knitted fabric according to the present invention comprises: a pair of needle beds which are disposed in front and rear with their tip portions abutting each other; A carriage slidably provided on the upper surface of each needle bed for adjusting the knitting needles of the needle bed, and each carriage is provided with one knitting lock at the front and back, and the knitting lock is provided with a carriage . A stitch drawing cam that acts to form a stitch during right-row knitting, and a stitch during left-hand knitting of the carriage
And a stitch pull-in cam acting to form a flat knitting machine so that each of the two stitch pull-in cams is separately driven and controlled by a motor driven and controlled by a controller. When knitting the rubber knitted fabric by sliding left and right, the leading side with respect to the traveling direction of the carriage
Set the stitch pull-in cam located at
The rubber that is locked to the knitting needle of either the front or back needle bed by knitting on the previous course
A knitting needle to lock the stitches of the outermost wales of the knitted fabric, the Knitting
Notch by stitches retraction cam leading side of the coating Rock
The stitch pull-in cam is operated so as to form the stitch with the stitch pull-in cam on the trailing side.
Is provided with a controller for controlling the driving .

[0011]

[Function] When the carriage reciprocates on a pair of needle beds provided facing each other, the leading stitch drawing cam constituting the knitting lock of the carriage knocks over the knitting needle with the motor by the controller by the controller. while being operated in a position that is, stitches retraction cam of the trailing is Ru is operated in a position to form a stitch.

Therefore, the stitch hooked to the knitting needle at the end of the knitted fabric is reliably knocked over by the preceding stitch drawing cam, so that a beautiful stitch is formed by the subsequent stitch drawing cam. Will be. Further, when the knitting needle is operated to the position where the knitting needle is knocked over by the preceding stitch drawing-in cam, there is an effect that the stitches hooked on the knitting needle are uniformly arranged.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A knitting apparatus for a rubber knitted fabric according to the present invention will be described with reference to the drawings. The flat knitting machine used for knitting a rubber knitted fabric of the present invention is provided with a pair of needle beds 3 which support a large number of knitting needles 2 so as to be able to move back and forth with their tips abutting as shown in FIG. In the flat knitting machine 1 described above, a carriage 4 for adjusting the movement of the knitting needle 2 is slidably disposed on the upper surface of the needle bed 3.

As shown in FIG. 2, the carriage 4 has
One knitting lock on each side (not shown)
In the knitting lock, stitch pull-in cams 5 and 7 for knitting the knitted fabric at the time of going forward (in the direction of the arrow in the figure) and stitch-drawing cams 6 and 8 for knitting the knitted fabric at the time of go-back are separately provided. Motors 9, 11, 10, 12
Are arranged, and each motor is controlled by a controller 14 (not shown) which will be described later.

The carriage 4 is mounted on a side of the frame 13 of the flat knitting machine 1, and is configured to be able to travel and drive via a drive belt (both not shown) driven by three motors controlled by a control device 14. Have been. The control device 14 calculates a data signal including, for example, a man-machine interface and a knitting program, and a position detection signal obtained by detecting the position of the carriage 4 by a calculation unit, and outputs a drive signal to a carriage motor drive unit. The carriages 4 are separately driven to rotate by motors based on signals.

Incidentally, the driving means may use a linear motor, a push-pull wire or another power source instead of the carriage driving motor.

FIG. 3 shows a screen for displaying an input state for setting the number of stitches of the stitch pull-in cams 5, 7, 6, and 8 controlled by the controller 14. In this embodiment, 1 is displayed.
Addresses to No. 15 can be set. The right and left lines in the setting screen respectively indicate the traveling direction of the carriage 4. The preceding, succeeding the stitch pull cam 5,7-6,8 carriage 4, prior to stitch pull cams is above the hand side as viewed from the traveling direction of the carriage 4, the trailing stitch pull cam underlying hand side It is displayed as.

Reference numerals F and B in the figure denote the front side and the back side of the carriage 4 arranged corresponding to the needle beds 3, respectively, which indicate the knitting right direction, that is, the carriage 4 runs rightward. In this case, a stitch is formed by the subsequent stitch drawing cams 5 and 7, and the knitting needle 2 for locking the stitch by the preceding stitch drawing cams 6 and 8 is operated to the knockover position.

Conversely, in the case of the knitting in which the carriage 4 travels to the left, the stitch pull-in cams 5, 7 precede and the stitch pull-in cams 6, 8 follow.

FIG. 4 shows another example of a stitch setting screen of the controller. Here, stitch settings for knitting (stitch formation) and pull-in are provided separately, and the setting method is described above. Various other things can be considered. For example, the controller internally calculates and automatically sets the stitch value for pull-in corresponding to the stitch value of the knitting yarn or knitting, or determines from the needle selection data whether the extreme wales are at the front or back. Then, the stitch pull-in cam can be automatically operated.

In addition, the value 18 is set for rubber knitting, the value 40 is set for redrawing, and the value 0 is set to no effect at the address 1 on the round selection screen shown in FIG. In the knitting machine of the present embodiment, the above-mentioned numerical value is the pulse number (0 to 0) of the stitch drawing-in cam drive motor.
90), where a small number indicates a blockage and a large number indicates a coarse grain. Next, FIG. 5 shows a knitted fabric 20 knitted by the method of the present invention, and is a knitting diagram showing a needle stand of a collar for an attached knitted fabric.

The needle stand of the collar is knitted so that the stitches 15 and 16 of the outermost wale are located on the knitting needles (knitting needles forming the back side knitted fabric) 2 of the rear needle bed 3.

The above knitted fabric is knitted as follows. First,
At the time of knitting in which the carriage 4 moves to the right, the stitches are formed by the stitch pull-in cams 5 and 7, and then the carriage 4 is located to the right of the knitting area of the knitted fabric. Next, at the time of knitting in which the carriage 4 moves to the left, the stitch pull-in cam 7
As a result, the knitting needle 2 of the stitch 16 of the endmost wale hooked on the knitting needle 2 of the rear needle bed 3 is retracted again according to the set value (40 in this embodiment), knocked over, and then the stitch retracting. The stitches of the course are formed by the cams 6 and 8.

When the carriage 4 moves to the right again, the end stitches 15 hooked to the knitting needles 2 of the rear needle bed 3 by the stitch pull-in cam 8 are performed.
After the knitting needle 2 is retracted again according to the set value (40 in this embodiment) and knocked over, the subsequent stitch drawing cams 7 and 5 form the stitches of the course.

Thereafter, after the stitches are knitted as described above, the process of pulling in the stitch drawing cam on the leading side of the knitting course that follows is repeated to knit the rubber knitted fabric.

In the above embodiment, the stitches 15 and 16 of the end wale of the knitted fabric 20 are located on the knitting needles of the rear needle bed 2. In order to knock over the stitch, the stitch pull-in cams 5, 6 are used. Further, the stitch pull-in cam may be operated at least for the stitch of the outermost wale in order to knock over the stitch, and therefore, the controller may be controlled so that the drawing amount becomes smaller toward the center portion. Needless to say, if the leading side stitch pulling cam is always operated as in this embodiment, the stitches hooked on the knitting needle to be drawn can be evenly arranged.

[0027]

As is apparent from the above description, the knitting needle is drawn again by the preceding stitch drawing cam of the following course of the rubber knitted fabric after the stitch formation. Even in the "state" , it is possible to knock over the hook, and there is an advantage that the occurrence of defective fabric with poor appearance due to "eye cover" as in the prior art can be eliminated.

Further, by simply adjusting the stitch drawing cam of the knitting lock, it is not necessary to use a special knitting needle as in the prior art, and each time the knitting width of the knitted fabric changes, this special knitting width is adjusted to the knitting width. There is an advantage that the burden on the operator can be reduced by eliminating the trouble of changing the position of the knitting needle, and the productivity can be improved accordingly. Furthermore,
When special because it is not necessary to use the knitting needles stitch formed by the knitting needle would exert other adverse effect on the knitted fabric appearance becomes to that slightly different from the stitches formed by the knitting needle Without any problem .

In addition, the controller operates the motor,
Since it is only necessary to adjust the stitch pull-in cam of the knitting lock, there is no need to significantly modify the carriage compared to the conventional one in which a plurality of stitch pull-in cams with different pull-in amounts are connected. There is also an advantage that it is possible to eliminate an increase in the size of the drive source due to an increase in the size of the drive.

Further, when the knitting needle is operated to the position where the knitting needle is knocked over by the preceding knitting stitch pull-in cam, there is an effect of arranging the stitches hooked on the knitting needle. For example, there is also an advantage that it is possible to prevent the stitches lowered by the action of the knitting cam due to the difference in the twisting direction from becoming uneven and deteriorating the quality of the knitted fabric.

[0031]

[Brief description of the drawings]

FIG. 1 is a front view of a two-bed flat knitting machine.

FIG. 2 is a view showing a carriage of a flat knitting machine for implementing the knitting method of the present invention.

FIG. 3 is a view showing a stitch setting screen of a controller of the flat knitting machine.

FIG. 4 is a diagram showing another example of a stitch setting screen of the controller of the flat knitting machine.

FIG. 5 is a diagram showing a knitting diagram of a collar knitted by the knitting method of the present invention.

[Explanation of symbols]

 2 ... Knitting needle 3 ... Needle bed 4 ... Carriage 5. 6, 7, 8 ... ... Stitch drawing-in cam 15, 16 ... Stitch of the end wale

Claims (1)

(57) [Claims] 1. A pair of needle beds, which are disposed back and forth with their tips facing each other in abutting fashion, and are slidably provided on the upper surfaces of the needle beds for adjusting the knitting needles of the needle beds. shape and the carriage, each one of the knitting lock back and forth to each carriage is provided, in the knitting lock the stitches at the right row organization of the carriage
And the stitch pull cam acts to formed, the carriage
A stitch pull-in cam that acts to form a stitch at the time of left-hand knitting, a stitch knitting machine configured such that both stitch pull-in cams are separately driven and controlled by motors that are respectively driven and controlled by a controller, When the carriage of the flat knitting machine slides left and right to knit a rubber knitted fabric ,
The stitch pull-in cam located on the leading side with respect to the traveling direction
Set the knock-over position, before the knitting needle to lock the stitches of the outermost wale of the rubber knitted fabric that is held on the knitting needle of one needle bed of <br/> front or back by knitting of the course, the Pulling operation to knockover position by stitch pulling cam on the leading side of knitting lock
And form a stitch with the subsequent stitch pull-in cam
Controller that drives and controls the stitch pull-in cam
A knitting device for a rubber knitted fabric, which is provided .