JPH08325902A - Double welt knitting apparatus and knitting method - Google Patents

Abstract

PURPOSE: To form a double welt in which the welts are knitted in a state of double layered bags only with a knitting process by a knitting machine and without needing a sewing process by a sewing machine. CONSTITUTION: (A) The upper knitting needles 40B are made to be in a nonknitting state every specified number of the needles, and the nonknitting needles hold the welt loops of the upper end. A knitted fabric 7 is formed in a serial order by letting the other upper needles 40B and the lower knitting needles 40A perform knitting. The knitted fabric 7 is folded between the knitting position and the holding position by the upper non-knitting needles 40B, causing the fabric 7 to hang down in a folded bag state. (B) Subsequently, the upper needles 40B that are in a non-knitting state in the stage A shift to a knitting state, and the welt loops 71 , which are held so far, are knitted into the welt knitting position with an appropriate interval. This forms a double welt in which the woven fabric 7 is integrated in a bag state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double welt knitting method in which a mouth rubber portion of socks or the like is folded back to form a double bag-like welt.

[0002]

2. Description of the Related Art A sock 100 as shown in FIG. 9 has a welt 101 at the upper end, a leg 102 and a heel 10.
The knitting device is knitted in order of 3, the foot portion 104, the toe portion 105, and the like, and a knitting device for knitting the lower cylinder, which has a plurality of grooves extending in the axial direction (up and down) on the outer peripheral surface and is rotated, An upper cylinder, a large number of sliders and knitting needles slidably arranged in the respective grooves, a large number of cams of various shapes arranged on the outer periphery of each cylinder so as to be able to advance and retreat in the radial direction, and control of the forward and backward movement of this cam group. And a main control drum (not shown) in which a large number of drum cams are arranged. Each of the sliders is formed with a protrusion called a bat having a length protruding from the groove to the outer peripheral side, and the bat moves in the circumferential direction while being pushed up or down by the cam group as the cylinder rotates. By doing so, each slider sequentially reciprocates in the groove in the axial direction, and the knitting needle engaged with the slider is projected and retracted between the two cylinders to grip the yarn supplied from the yarn feeder. While releasing, the knitting structure is sequentially formed.

The knitting of the welt 101 at the upper end of the sock has been conventionally performed by the following knitting method. First, with the drum cam on the main control drum,
The knitting needles are alternately arranged in the lower cylinder and the upper cylinder at the welt knitting position of 1 × 1 ridge, that is, every other one, and the knitting needles of the upper cylinder are brought into the non-knitting state while holding the knitting yarn by operating the cam. Knitting is started by shifting the knitting needles of the lower cylinder while feeding the rubber thread. Next, the knitting needle of the upper cylinder is returned to the knitting position by the operation of the cam, and the welt knitting having the knitting structure of 1 × 1 ridge is knitted for a predetermined course.

[0004]

By the way, in socks,
As shown in FIG.
There is a double-welt (double bag knitting) that is folded back inward to form a bag to prevent slipping. However, according to the method of knitting a welt according to the above-mentioned conventional technique, since the welt to be knitted is single, in order to make it a double welt, in addition to the above knitting step, A sewing process using a scooping sewing machine, such as folding back and stitching, was required, which inevitably increased costs.

The present invention has been made under the circumstances as described above, and its technical problem is that a double welt can be formed only by a knitting process by a knitting device without requiring a sewing process by a sewing machine. To provide a way to be organized.

[0006]

The above-mentioned technical problems are as follows.
The present invention can effectively solve the problem. That is, in the double welt knitting apparatus according to the present invention, a standard butt slider having a bat having a standard length and a short bat slider having a bat shorter than the standard are alternately arranged in a required number in the groove of the upper cylinder. Of the short butt slider to move the standard bat slider from the non-knitting state for knitting to the knitting state, and the short bat slider passes through the short bat slider for non-knitting for knitting. A first bag cam selectively controlled to a semi-acting position to hold the butt slider or a full escape position for passing both bats of the standard butt slider and the short butt slider, and the butt of both the standard butt slider and the short butt slider. All working positions or positions where the standard butt slider and the short bat slider are moved to the knitting state by causing interference. Serial passed through both the batt is intended to include a second bag cam is selectively controlled in all relief position to shift to the non-organized state for tubular knitting.

In the above structure, the term "butt" refers to either the knitting bat or the transfer bat in a slider having the knitting bat and the transfer bat.

The double welt knitting method according to the present invention uses the above-mentioned knitting apparatus, wherein the knitting needle of the upper cylinder is moved to a non-knitting state to hold the knitting yarn and the knitting needle of the lower cylinder is held. Knitting is started by bag knitting by shifting to a predetermined knitting state, and then the knitting needles of the upper cylinder are moved from the non-knitting state to the knitting state at a required number of times, and knitting operation is performed together with the knitting needles of the lower cylinder to cause knitting operation. The other knitting needles perform double welt knitting for a predetermined number of courses by waiting in the non-knitting state while holding the upper end welt loops, and then knitting all the knitting needles to complete the double welt knitting. .

[0009]

Operation: At the start of knitting, first, bag knitting is performed. This bag knitting is performed by the knitting operation of only the knitting needles arranged in the lower cylinder, and the knitting needles arranged in the upper cylinder are kept in a non-knitting (non-operating) state.

That is, in the knitting start process by bag knitting, the sliders arranged in the grooves of the lower cylinder are
The butt moves up and down by interfering with the inclined surface of the cam at a predetermined position in the circumferential direction with the rotation of the lower cylinder, and each knitting needle arranged in the lower cylinder is knitted by this slider, The standard butt slider and the short butt slider arranged in each groove of the upper cylinder are deactivated by retracting the first and second bag cams to all escape positions where they are in non-contact with all the bats, All the knitting needles arranged in the upper cylinder are in the non-knitting state while holding the knitting yarn. Therefore, the knitting structure is knitted only by the knitting operation of the knitting needle of the lower cylinder, with the upper end welt loop being held by the knitting needle of the upper cylinder.

Next, the knitting needles of the upper cylinder are moved from the non-knitting state to the knitting state at a required number of times, and knitting is performed with the knitting needles of the lower cylinder, and the other knitting needles of the upper cylinder hold the knitting yarns, and By waiting in the knitting state, double welt knitting is performed for a predetermined number of courses. In this double welt knitting, with the second bag cam held at the full escape position, the first bag cam on the butt movement path of the standard butt slider and the short butt slider is moved toward the full escape position toward the upper cylinder surface. By advancing to the half-action position between all the action positions, it interferes with the bat of the standard bat slider that has been in the non-operating state until it moves to the knitting state, and this standard butt slider and the required number of Since the short bat sliders arranged alternately are kept in non-contact with the bats, the knitting needles engaged with the short bat sliders are left in the non-knitting position while holding the welt loop at the upper end of the knitting structure. Therefore, the knitting needle of the standard butt slider that has transitioned from the non-knitting state to the knitting state is released downward from the welt loop that has been held so far, and knitting operation is performed together with the knitting needle of the lower cylinder. While being folded back between the welt knitting position by the knitting operation of the knitting needle and the holding position by the non-actuated knitting needle of the upper cylinder, it gradually hangs down inside the lower cylinder.

After the above-mentioned double welt knitting is performed for a predetermined course, the second bag cam is advanced to all working positions where it interferes with all the bats of the standard butt slider and the short bat slider arranged in each groove of the upper cylinder. By doing so, all the knitting needles engaged with the standard butt slider and the short butt slider perform the knitting operation together with the knitting needles engaged with the slider of the lower cylinder. Therefore, the welt loop at the upper end of the knitting structure, which was held by the non-operated required number of knitting needles of the upper cylinder in the double welt knitting process, is knitted into the welt knitting position by the transition of the knitting needle to the knitting state and integrated. As a result, a double welt consisting of a bag-shaped double welt is formed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows only a part of a slider and a knitting needle of a double-welt knitting apparatus according to an embodiment of the present invention for knitting a double-welt sock, and FIG. 3 is a partial view showing a state in which a slider and a knitting needle are assembled. Reference numeral 10 in the drawing is a lower slider arranged in a groove 1a formed in the lower cylinder 1 in the axial direction (vertical direction), and reference numeral 20 is formed in the upper cylinder 2 in the axial direction (vertical direction). A standard butt slider arranged in the groove 2a formed therein, reference numeral 30 is a short butt slider arranged in the groove 2a of the upper cylinder 2, and reference numerals 40A and 40B are knitting needles. The lower slider 10 arranged in the lower cylinder 1 is provided with an upper knitting butt 11, a lower transfer butt 12, and an engaging portion 13 near the tip (upper end). The standard butt slider 20 and the short butt slider 30 arranged on the upper cylinder 2 are respectively provided on the lower knitting bat 2
1, 31 and the upper transfer butts 22, 32,
Engaging portions 23 and 33 near the tip (lower end) are formed.

Knitting butts 11, 21, 31 and transfer bat 1 of each slider 10, 20, 30
2, 22 and 32 project from the grooves 1a and 2a to the outer peripheral side of the cylinder, of which the lower slider 10 and the standard butt slider 20 are knitting butts 11 and 21.
Of the short butt slider 30, the knitting butt 31 of the short butt slider 30 is formed shorter than the standard length. In addition, the standard butt slider 20 and the short bat slider 30 in the upper cylinder 2 are
In the interval of 0, every other three short bat sliders 30 are alternately arranged in the circumferential direction at a ratio of one.

The knitting needles 40A and 40B have a pair of hooks 41 and 42 formed at the upper and lower ends thereof and the respective hooks 4 of these hooks.
A knitting needle 40A arranged on the lower cylinder 1 having a pair of spars 43, 44 for opening and closing 1, 42
The hook 41 at the lower end is the engaging portion 13 of the lower slider 10.
Needle 40B engaged with the needle and arranged in the upper cylinder 2
The hook 42 at the upper end is engaged with the engaging portion 23 of the standard butt slider 20 or the engaging portion 33 of the short bat slider 30.

On the outer peripheral side of the lower cylinder 1 and the outer peripheral side of the upper cylinder 2, a cam group composed of a large number of cams and a yarn supply port are arranged so as to surround them. 3 to 5 show the arrangement of the cam groups 3 and 4 and the yarn supply port 5 in the knitting bat 1 defined by the cam groups 3 and 4.
In the development view shown together with the movement paths of 1, 21, 31, each cam is provided to be movable forward and backward in the radial direction with respect to the lower cylinder 1 or the upper cylinder 2 by an actuator (not shown). , 2
Knitting butt 11,21,21 protruding from the outer peripheral surface of
31 or the transfer butt 12, 22, 32 is selectively held at an interference position (acting position) or an outer position (relief position) where there is no interference. The drive of the actuator is controlled by intermittent rotation of a main control drum having a large number of control drum cams arranged on the outer peripheral surface.

The knitting butts 11, 21, 31 of the sliders 10, 20, 30 are moved between the lower cam groups 3 or the upper cam groups 4 by the paths shown in FIGS. The upper and lower knitting needles 40A and 40B are knitted or unknitted. That is, the lower cam group 3 arranged around the lower cylinder 1 includes the knitting butt 11 of the lower slider 10 accompanying the rotation of the lower cylinder 1, the moving path I shown in FIGS. Of the knitting butt 21 of the standard butt slider 20 as the upper cylinder 2 rotates.
(Hereinafter, referred to as a knitting long bat for convenience) or the flow of the knitting bat 31 (hereinafter, referred to as a short knitting bat for convenience) of the short bat slider 30 will be described with reference to a moving path II shown in FIG. 3, a moving path III shown in FIG. It guides the travel route IV shown in FIG.

That is, in the lower cam group 3, the knitting butt 11 that has moved from the right side in the drawing is first pushed down to a position between the knitting butt 11 and the cam 3b by the stitch cam 3a in the vicinity of the yarn supply port 5. , The cam 3c, the riding on the cam 3d, the cam 3f is pushed down, and the cam 3a is pressed again.
Is guided along the movement path I such that the lower slider 10 is maintained at a predetermined height, and thereby the lower slider 10 moves up and down in the groove 1a of the lower cylinder 1.

The upper cam group 4 has a first bag cam 4A and a second bag cam 4B. Of these, the first bag cam 4A is shown in FIG.
As shown in, a knitting short bat 31 that interferes with the knitting long bat 21 but is shorter than the standard length
In the radial direction between the half-acting position that is non-interfering with and the full relief position (the position indicated by the alternate long and short dash line 4A ′ in FIG. 2) that is non-interfering with both knitting butts 21 and 31. It is adapted to be selectively moved back and forth. On the other hand, the second bag cam 4B has all working positions in the vicinity of the outer peripheral surface of the upper cylinder 2 that interfere with both the knitting long butt 21 and the short knitting bat 31, and all escape positions that do not interfere with both. It is adapted to be selectively moved back and forth between the positions in the radial direction.

The movement of the knitting long bat 21 and the short knitting bat 31 with the rotation of the upper cylinder 2 is
It is designed to be carried out between the stitch cams 4a and 4b and between the stitch cams 4f and 4g. First bag cam 4A
Is between the cams 4f and 4g (left side in the figure)
The second bag cam 4B is disposed in front of between the stitch cams 4a and 4b located near the direction in which the yarn supply port 5 exists. A cam 4j that pushes down the knitting butts 21 and 31 is adjacently arranged on the lower front side of the first bag cam 4A, and a cam 4e acting similarly is also arranged on the lower front side of the second bag cam 4B. It is provided.

That is, in the upper cam group 4, for example, when both the first bag cam 4A and the second bag cam 4B are retracted to the full escape position, as shown in FIG. The knitting long butt 21 and the short knitting butt 31 that have moved from the middle left side between the stitch cams 4a and 4b and on the cam 4c are both non-interfering with the second bag cam 4B. Cam 4 passing through the inner circumference
You will be guided between d and 4e. The knitting butt 21, 31 passing between the cams 4f and 4g and the cam 4h, which are next to the cam, are both the first bag cam 4
It passes through its inner circumference without interfering with A, is guided between the cams 4i and 4j, goes straight to the position between the cams 4n and 4o, and again reaches between the stitch cams 4a and 4b. In such a moving path II, both the standard butt slider 20 and the short butt slider 30 are located above the upper and lower movable ranges and are hardly moved up and down. Therefore, the knitting needle 40B engaged with these sliders 20 and 30 is It is held in a non-knitted state.

Further, for example, when the second bag cam 4B is retracted to the full relief position and the first bag cam 4A is advanced to the half-acting position, first, from the left side in the drawing, between the stitch cams 4a and 4b and Both the knitting long butt 21 and the short knitting bat 31 that have moved over the cam 4c pass through the inner periphery of the second bag cam 4B without interfering with the second bag cam 4B, and the cams 4d, 4e Then, it is guided to the next space between the stitch cams 4f and 4g and above the cam 4h. Up to this point, it is the same as the travel route II shown in FIG.

However, the next first bag cam 4A is in a half-acting position where it interferes with the knitting long butt 21 and does not interfere with the knitting short bat 31 shorter than the standard, so that the knitting long bat 21 is 21 is pushed down by the interference with the first bag cam 4A and guided toward the lower side of the cam 4j, and when it reaches the stitch needle upper cam 4m, rides on it and further climbs on the stitch cam 4a. While moving along the movement path III shown in FIG. 4 such as returning to the cam 4b, the short knitting butt 31 is used for the first bag cam 4
Since it passes through its inner circumference without interfering with A, it follows the above-mentioned movement route II as it is. Therefore, the knitting needle 40B engaged with the standard butt slider 20 performs a predetermined knitting operation, while the knitting needle 40B engaged with the short butt slider 30 is held in a non-knitting state.

Further, for example, when the second bag cam 4B has advanced to all working positions, first, the stitch cam 4 from the left side in the drawing.
A knitting long butt 21 and a short knitting bat 31 that have moved between a and 4b and over the cam 4c.
Both are pushed down by the interference with the second bag cam 4B and guided to the lower side of the cam 4e, and proceed straight as they are until they reach the stitch cam upper cam 4m. 4a and the crest cam 4b are returned to move along the movement route IV shown in FIG. Therefore, the knitting needle 4 engaged with the standard butt slider 20
0B and knitting needle 40B engaged with the short butt slider 30
Performs a predetermined welt knitting operation.

The lower cam group 3 and the upper cam group 4 respectively have a lower transfer cam 3e and an upper transfer cam 4k which are normally retracted to the full escape position. Of these, the downward transfer cam 3e interferes with the transfer butt 12 of the lower slider 10 moving along a path I ′ (see FIG. 5) parallel to the moving path I when it is advanced to a predetermined operating position. Is pushed up as shown by the path V, the slider 10 is displaced further upward than the upper limit position of the movement by the movement path I, whereby the knitting needle 40A engaged with the lower slider 10 is moved to the upper cylinder 2. It is transferred to the standard bat slider 20 or the short bat slider 30. Similarly, when the upper transfer cam 4k is advanced to a predetermined operating position, for example, the transfer butt 42 of the standard bat slider 20 or the transfer butt 32 of the short bat slider 30 moving along a path IV 'parallel to the moving path IV. Since it interferes with and pushes it down as shown by the path VI, the standard butt slider 20 or the short bat slider 30 is displaced further downward than the lower limit position of the movement by the moving path IV, whereby the standard bat slider 20 is moved.
Alternatively, the knitting needle 40B engaged with the short butt slider 30 is transferred to the lower slider 10.

A transfer plate 6 is arranged between the lower transfer cam 3e and the upper transfer cam 4k, and the transfer plate 6 is largely displaced in order to transfer the knitting needles 40A and 40B to the upper side or the lower side. The slider 10, 20 or 30 is bent to release the engagement between the engaging portion 13, 23 or 33 and the hook 41 or 42.

In order to knit a double-welt sock with the double-welt knitting device having the above-mentioned structure, first, as shown in FIG. 1, the knitting needles 40A and 40B are put in the welt knitting position of 1 × 1 ridge, that is, in the circumferential direction. In contrast, the lower cylinder 1 and the upper cylinder 2 are alternately arranged. Therefore, in the lower cylinder 1, every other knitting needle 40A is engaged with the lower slider 10, and in the upper cylinder 2, three standard knitting needles 40B are arranged.
The middle slider of the two is engaged with the short butt slider 30.

At the start of knitting, first, both the first bag cam 4A and the second bag cam 4B are retracted to the full escape position. In this state, when the upper and lower cylinders 1 and 2 are rotated and the knitting yarn is supplied from the yarn supply port 5, in the lower cylinder 1, the knitting bat 11 of the lower slider 10 moves along the path I, While the knitting needle 40A engaged with the side slider 10 is knitted, in the upper cylinder 2, the knitting long bat 21 of the standard butt slider 20 and the knitting short bat 31 of the short bat slider 30 are the first and second bags. Since the cams 4A and 4B pass through the inner circumferences of the cams 4A and 4C without any interference, the upper sliders 20 and 30 are almost inoperative in the vertical direction, and all the knitting needles 40B arranged in the upper cylinder are moved.
However, it becomes a non-knitted state while holding the knitting yarn (the upper end welt loop). Therefore, bag knitting is performed only by the lower knitting needle 40A.

That is, the bag knitting at the start of knitting is basically performed by the operation shown in FIG. That is, the welt loop 7 ₁ at the upper end of the knitting structure 7 is held by the hook 41 of the upper non-actuated knitting needle 40B.
Of the lower knitting needles 40A to be knitted, first, the knitting needle 40A located at the position (a) holds the welt loop 7 _n with the hook 42, and the knitting butt of the lower slider 10 is shown in FIG. 7 (b) and (c) by riding on the cams 3c and 3d in the movement process of the movement route I shown in FIG.
In the ascending process, the spatula 44 is reversed by the interference with the welt loop 7 _n to open the hook 42. Furthermore, (d)
In (e), the knitting yarn 7a from the yarn supply port 5 is hooked, and the lower slider 10 moves the cam 3 in the moving path I.
In the descending process of (e) to (g) by being pushed down under f and the stitch cam 3a, the spatula 44 closes the hook 72 by the interference with the welt loop 7 _n and the knitting yarn 7a is welted loop 7 _n. To form a new welt loop 7 _{n + 1} . Then, such a series of operations is repeated each time the cylinder makes one revolution, and the knitting structure 7 is formed. In actual knitting, a rubber thread is supplied from another thread supply port (not shown) in addition to the knitting thread 7a from the thread supply port 5 and is inserted into the knitting structure 7 at predetermined intervals.

After the bag knitting has been knitted for a predetermined course (for example, 4 courses), a double welt knitting process is started. In this double welt knitting, the second bag cam 4
Moving route II shown in Fig. 3 while keeping B at all escape positions
The upper first bag cam 4A is advanced toward the surface of the upper cylinder 2 to the half-acting position. Then, the first bag cam 4A interferes with the knitting length bat 21 of the standard bat slider 20 that has been moving on the moving path II, and moves it to the moving path III shown in FIG. Since the short butt sliders 30 arranged at intervals of three with respect to the standard butt slider 20 are kept in non-contact with the knitting short bats 31, the short bat slider 30 continuously moves along the movement path II. . For this reason, the knitting needle 40B of the standard butt slider 20 that has transitioned to the knitting state is disengaged downward from the welt loop 7 ₁ that has been held so far and knits with the knitting needle 40A of the lower slider 10, while the knitting needle 40B of the short bat slider 30 is being operated. The knitting needles 40B maintain the non-knitting state, that is, every other knitting needle 40B arranged on the upper side in FIG.
The knitting operation of descending to the welt knitting position is started. Therefore, the knitting structure 7 which is sequentially knitted is as shown in FIG.
As shown in (A), while being folded back between the knitting position by the knitting needle 40A of the lower slider 10 and the knitting needle 40B of the standard butt slider 20 and the holding position by the knitting needle 40B of the inoperative short bat slider 30, Gradually hang inside the side cylinder.

After the double welt knitting has been performed for a predetermined course (several dozen courses), the second bag cam 4B is advanced to the full working position, so that the knitting long butt 21 and the short bat slider 30 of the standard butt slider 20 are moved. Both of the short knitting bats 31 have the movement path shown in FIG.
The knitting needle 40A and the knitting needle 40B are moved up and down at this point, and at this time, the knitting needles 40A and 40B are knitted and the sock 1
The knitting of the leg portion 102 of 00 is started. Therefore, so far well Troup ₇₁ held in the knitting needle 40B of the short-butt slider 30 were non-operation, needle 40B of the short-butt slider 30 also knitted into welt knitting position by initiating a knitting operation, which Thus, as shown in FIG. 7B, a double welt in which the knitting structure 7 is folded back and sewn into a bag shape is formed.

As described above, the forward / backward movement of each cam in the cam groups 3 and 4 is controlled by a large number of drum cams arranged on the main control drum in correspondence with each knitting course and each cam. . Therefore, in the knitting apparatus according to this embodiment, after the bag knitting, the first bag cam 4A is advanced to the semi-acting position to perform the double welt knitting, so that all the first bag cams set on the main control drum are set. Behind the escape area there is a lower drum cam than the drum cams that advance each cam to its full working position.

The present invention is not limited to the above-mentioned embodiment. For example, the short bat slider 30 is
A transfer bat shorter than the standard length is provided instead of the short knitting butt 31, while the first bag cam 4A
As shown in FIG. 8, the knitting butt of the standard butt slider 20 and the short bat slider 30 moves along the moving path II.
Transfer bat movement path II 'when moving in
A semi-acting position which is disposed above and interferes with the transfer bat of the standard length formed on the standard bat slider 20 moving on the moving path II ′, but does not interfere with the short transfer bat of the short bat slider 30; Even if it is moved back and forth between all the escape positions, the short bat slider 30
Can be deactivated by the transfer path II 'of the transfer bat, and the standard butt slider 20 can be operated along the trajectory of the transfer path III' of the transfer bat, that is, the movement path III of the knitting bat shown in FIG. Therefore, the same bag knitting as described above can be performed.

Further, in the above-mentioned embodiment, at the end of the double welt, the uppermost welt loops 7 ₁ are knitted at every other welt knitting position, but this is shorter than the standard butt slider 20. It can be changed appropriately depending on how many bat sliders 30 are arranged and how many bat sliders are arranged.

[0035]

According to the present invention, in the knitting process of the welt, the starting portion of the knitting is automatically knitted into the lower end portion of the welt, so that the knitting device does not require a sewing process by a sewing machine. It is possible to knit a double welt consisting of double welts folded back in a bag shape only by the knitting process, and only by adjusting the butt length of the slider arranged on the upper cylinder and the advancing / retreating position of the first bag cam. The present invention can be applied to an existing knitting device, and it is possible to provide a low cost double welted sock that does not have a feeling of roughness of a seam due to sewing and is excellent in touch.

[Brief description of drawings]

FIG. 1 is an explanatory view partially showing the arrangement of a slider and a knitting needle of a double welt knitting device according to an embodiment of the present invention.

FIG. 2 is a view showing the double welt knitting apparatus of the above-mentioned embodiment, (A) is a longitudinal sectional view partially showing an assembled state of a slider and a knitting needle, and (B) is a line B- in (A).
It is sectional drawing cut | disconnected on the B line.

FIG. 3 is a development view showing the arrangement of cam groups and yarn supply ports in the double welt knitting device of the above-described embodiment together with the movement path of the knitting bat.

FIG. 4 is a development view showing the arrangement of cam groups and yarn supply ports in the double welt knitting device of the above embodiment, along with other movement paths of the knitting bat.

FIG. 5 is a development view showing the arrangement of the cam group and the yarn supply port in the double welt knitting device of the above embodiment, together with still another movement path of the knitting bat.

FIG. 6 is a conceptual diagram showing a knitting process of bag knitting by the double welt knitting device of the above embodiment.

FIG. 7 is a conceptual diagram showing a process of double-welt knitting by the double-welt knitting device of the above embodiment.

FIG. 8 is a development view showing the arrangement of cam groups and yarn supply ports in a double welt knitting device according to another embodiment of the present invention together with the transfer bat movement path.

FIG. 9 is an explanatory view showing a partially cutaway double-welt sock.

[Explanation of symbols]

 1 Lower Cylinder 2 Upper Cylinder 3 Lower Cam Group 4 Upper Cam Group 4A First Bag Cam 4B Second Bag Cam 10 Lower Slider 20 Standard Butt Slider 21 Knitting Long Butt 30 Short Butt Slider 31 Knitting Short Butt 40A, 40B knitting needle

Claims (2)

[Claims] 1. A large number of sliders each having a butt arranged in each groove formed in the lower cylinder and the upper cylinder in the axial direction and projecting from the groove to the outer peripheral side, and arranged so as to be movable back and forth with respect to each cylinder. With the rotation of the cylinder, a large number of cams that come into contact with the butt and reciprocate the sliders in the groove, and between the cylinders by selectively engaging and reciprocating the sliders, In a knitting device including a large number of knitting needles for knitting a yarn, in a groove of the upper cylinder, a standard bat slider having a bat having a standard length and a short bat slider having a bat shorter than the standard are alternately arranged by a required number. The standard bat slider interferes with the bat of the standard bat slider to move the standard bat slider from the non-knitting state for bag knitting to the knitting state and The bats of the short bat slider are selectively passed to a semi-acting position where the bats pass and hold the short bat slider in a non-knitted state for bag knitting, or to a full relief position where the bats of both the standard bat slider and the short bat slider pass. The first bag cam to be controlled and the bats of both the standard butt slider and the short bat slider are caused to interfere with each other so that the standard butt slider and the short bat slider are moved to the knitting state. A double-welt knitting device, comprising: a second bag cam that is selectively controlled to a full relief position for shifting to a non-knitting state for knitting. 2. A knitting start step of carrying out bag knitting by moving a knitting needle of an upper cylinder to a non-knitting state to hold a knitting yarn and moving a knitting needle of a lower cylinder to a predetermined knitting state; After that, the knitting needles of the upper cylinder are moved from the non-knitting state to the knitting state at every required number of times, and knitting operation is performed together with the knitting needles of the lower cylinder, and the other knitting needles of the upper cylinder are brought to the non-knitting state while holding the upper welt loop. A double-welt knitting method comprising: a double-welt knitting step of waiting, and a double-welt finishing step of knitting all knitting needles after knitting the double-welt knitting step for a predetermined number of courses.