KR20020081264A - Method and device for producing tubular knitted articles and for closing their toes - Google Patents

Abstract

The tubular fabric M is knitted from the leading edge B1 to the distal edge B2 on the annular bed 5 designed to suture the toe.

Elastic strips are formed along the terminal edges by knitting needles.

When the elastic strip F1 is formed, the tubular fabric is completely released from the knitting needles of the annular bed, and is fastened to the conveying member by the elastic strip so that the finished tubular fabric is moved out of the bed.

Description

METHOOD AND DEVICE FOR PRODUCING TUBULAR KNITTED ARTICLES AND FOR CLOSING THEIR TOES}

In the manufacture of stockings, tights, socks and other tubular fabrics, they are usually made in the form of knitted fiber tubes with open ends on annular eccentrics, which are sent to the sewing machine to sew their toes to the finished product. do.

In the sewing operation, a lot of airborne work is carried out to raise the knitted fiber tube by hand or to get into the tension between the cutting edges of the sewing machine, called guillotine (guillotine) in a state in which the flap is pushed to one side and tensioned. Will be needed.

The automation of such knitting process is very hopeful because the knitting fiber tube is pushed to one side or inserted into the sewing machine with the tension generated at the flap at the end thereof.

There are several known techniques for stitching toes directly on annular knitting machines. For example, EP-A-0592376, EP-A-0635593, and the like, and other systems include WO-A-9531595, WO-A-9534702, WO-A-9704153, and the like.

In the technique mentioned at the end, the knitting of the knitted fiber tube is started with the toe as the starting point, and the opening is closed by closing the relaxed edge while leaving the opening, and the toe is closed.

EP-A-0679746 partially frees the fabric from eccentricity and supports the fabric with a pair of hooks at two corresponding opposing points at its ends. If it is determined that the hook securely holds the knit fabric, the fabric is freely isolated from the needle. The hooks move the fabric with a pair of clamps and again support the fabric in tension at corresponding opposing points so that the edge flaps are pushed to one side and cut into the cutting edge.

This device has the significant drawback of causing damage to the fabric by strongly knitting the knitted fabric as a mechanical element over the primary and secondary. Moreover, it is never easy in this apparatus to interfere with machine elements and to draw the edges of the fabric into the sewing machine.

Weaving methods based on the special nature of the stitches and / or the sequence of rows organized with high-threads have been studied to facilitate the active sewing of the toe. EP-B-0456186 corresponds to this method, but this also cannot be avoided from the problem that the end of the fabric is easily rolled into the so-called guillotine of the sewing machine, or that the process depends on the mechanical element method.

It is a first object of the present invention to provide a method and an apparatus which allow the end of a tubular fabric to be easily introduced into the so-called guillotine of a sewing machine, simplify this pulling action, and introduce a simple mechanical configuration.

Another object of the present invention is to provide a control method and an apparatus for sewing the edge of the tubular fabric into the so-called guillotine to sew the edge more effectively in forming the toe.

Another advanced object of the present invention is to provide an apparatus and method for mechanically enabling the sewing operation of the toe of a tubular fabric. It is an object of the present invention within the scope of this advanced phenomenon to make the manual operation of the tubular fabric simple and reliable.

The present invention relates to a tubular knitted fabric used in the field of stockings manufacturing or a tubular knitting to form a tiptoe by sewing one end, such as stockings, socks, and a method and apparatus for stitching the tiptoe.

A first embodiment of the present invention relates to a method of moving a tubular fabric position on an annular needle bed of a knitting machine to continuously sew a terminal edge to form a toe of the fabric, and Relates to a device.

Another embodiment of the present invention is directed to a method capable of easily handling a fabric disposed on an annular knitting machine, such as when sewing a toe of a stocking or sock.

1 to 5 are longitudinal cross-sectional views showing annular bed, cushion tube and transfer member in various knitting stages of tubular fabric.

Figures 6 to 8 are perspective views of the annular knitting machine and the sewing station added at various positions of the operation member.

9 to 24 are partial perspective views of a general knitting machine at various stages of operation.

25 is a fiber view forming an elastic strip adjacent the distal perimeter of the tubular fabric.

16-33 illustrate successive operating steps and apparatus in accordance with another embodiment of the present invention.

34 to 35 show a variant of the device of FIGS. 26 to 33.

According to a first embodiment of the present invention, a method of knitting a tubular fabric having a starting edge and a toe by knitting a tubular fabric in an annular knitting machine from the starting edge to the terminal edge to form the toe To provide.

In the annular single bed, an elastic strip specially made to be formed along the terminal by the proper state of the knitting needle, that is, the elastic fiber part is designed to be separated and removed from the fabric after the toe of the fabric is sealed.

This elastic strip will be formed by sewing the toe continuously by expanding the area and having a larger thickness than the fibers forming the fabric. This action creates a distal denser that is sutured longer than required to prevent discomfort in lifting the fabric or to prevent swelling and excessive stretching during sewing.

This prevents the final shape of the fabric (currently composed of elastic strips instead of the end edges of the fibers forming the final fabric) from being randomly crushed or folded so that it can be easily constrained by mechanical means to introduce the fabric into the sewing machine. do.

Essentially, the elastic strip is the part of the fiber that has greater density and thickness than the soft and thin knit fibers forming the tubular fabric. This strip is formed by the selection of the needle type and the number of stitches per row smaller than the row for knitting the fabric. Incidentally, at least one of the threads used in the strip is required to be elastic yarn.

This is to achieve a predetermined elongation to create a margin of the fabric area in order to perform the sewing of the toe through the sewing operation. When sewing of the end edge is completed or during the sewing step, the elastic strip is removed by a similar process applied to the distal end of the fiber.

In general, sewing to the distal edge of the fabric can be performed separately (both temporally and spatially) from the knitting of the fabric.

For example, when a tubular fabric with an opening is released from a knitting machine, the fabric may be collected in a truck or container and transferred to a sewing part to be sewn or the fabric may be moved to a pneumatic or mechanical conveying system.

Here, the sewing machine can be controlled or automated by the operator.

In the first case, the elastic strip simplifies the operator's work, thus reducing the time required to introduce the fabric into the sewing machine.

In the second case, the elastic strip is designed to allow the machine operator to carry out simple and reliable handling in picking up each fabric or pulling it into the sewing machine.

In both of these, reference marks or a pair of reference marks formed in the elastic strip during entry into the sewing machine can adjust the correct adaptation of the fabric.

The mark may be read by a sensor or identified by a driver under the intervention of a machine operator.

For example, a suitable color may be formed on the yarn. In this new method of simplification, the introduction of terminal flaps or the simplification of the introduction of the edges of the fabric into the sewing machine is of particular advantage and is very effective in automatically sewing the toes of the finished tubular fabric. The method and apparatus can be improved. This is because the elastic strips formed on the distal edge of the tubular fabric can be used as a means of constraining the fabric to a conveying member of a special tubular member that lifts the fabric from the annular bed and transfers the fabric to the sewing machine. to be.

This eliminates the need for a relatively complex operation for mechanical restraint of the fabric at the end of the knitting prior to complete isolation of the fabric from the knitting needles.

In fact, according to an improvement of the present invention, the tubular fabric is completely isolated from the knitting needles of the annular bedding at the knitted end of the tubular fabric and the elastic strip and is constrained by the elastic strip, and the transporting member carries the tubular fabric into the annular bedding. A method of completing transfer out is provided.

As such, the fabric movement of the present invention does not require the use of a mechanical pick-up member that damages the fiber or is particularly complicated. Because the fabric can be simply picked up by the positioning of a substantially tubular conveying member, the upper edge of the conveying member is the so-called stitch-forming flag on which the knitting needle and sinker of the annular system for knitting fibers are placed. The proper height is several millimeters higher than the height of the pitch forming plane.

When the fibers are separated from the knitting needles, the elastic strip is tight in the tubular conveying member and the tubular fabric is held at a predetermined angle to the outside of the conveying member so that the fabric can be conveyed to the sewing machine.

As a possible embodiment of the present invention, the garment leaving the machine after the manufacturing process is finished in the garment of the stocking field can be sealed toe by a general sewing machine without depending on the operator's hand work and without stopping the knitting process It is possible to provide a method of using an annular knitting machine.

As a practical embodiment, the method comprises the step of coaxially introducing the conveying member into the annular bedding at least above the height of the stitch forming plane.

The tubular fabric is formed by being sucked into the conveying member while the conveying member is drawn into the annular bed.

After the tubular fabric is separated from the annular bed by the above method and the elastic strip is finished, the elastic strip formed at the end edge of the tubular fabric is elastically latched on the outer side of the conveying member to annular the conveying member. It is pulled out of the bed.

The following steps may be provided to obtain the necessary tension for the tubular fabric during knitting and drawing the tubular fabric into the tubular conveying member.

Providing a cushioning tube inside the annular bed, the cushioning tube having an opening on the side under the annular bed; Inhalation occurs inside the cushion tube and sucks the fibers to begin forming a tubular fabric inside the cushion tube; In the intermediate stage of the formation of the tubular fabric (e.g. while the heel is being formed), opening the bottom of the cushioning tube through the suction to introduce the conveying member into the cushioning tube; Generating suction into the conveying member; Lifting the conveying member coaxially with the cushioning tube above the height of the stitch forming plane; Forming with suction of the tubular fabric.

In addition to the conveying member, the tubular fabric is held by the tension strip, freeing the tubular fabric from the knitting needles, and extending the tubular fabric by the conveying member.

The following steps may be provided to obtain a seam on the inner surface of the tubular fabric.

The transfer of the conveying member causes the tubular fabric to be fastened to the conveying member and the sewing machine is located under the annular bed or on the side of the knitting machine;

-Locking the tubular fabric at the position of the elastic strip;

Turning out the inner side of the tubular fabric to cause the fabric to slide on the outer surface of the tubular conveying member until the elastic strip and the distal end of the fabric arrive below the bottom of the conveying member. . In this position, the distal edge is introduced into the sewing machine, more precisely into the guillotine of the sewing machine.

In fact, the following steps are provided to facilitate sewing operations.

Constraining the tubular fabric at radially opposite points along the distal edge at the position of the elastic strip to turn out inwardly;

Tension is applied to the distal edge and the resilient strip after the tubular fabric is turned out inward, and through this action, the distal edge and the resilient strip extend at their respective points in opposite directions in the radial direction. Wow;

Introducing the end edge into the guillotine of the sewing machine;

-Sewing the end edge, suture the toe, and separating and removing the elastic strip. When the tubular fabric is turned out inward, at least its starting edge will continue to restrain the outer surface of the conveying member. And after the toe of the toe of the fabric is finished, the fabric is turned out a second time inward and, if necessary, sucked onto the tubular conveying member, which is a wheel-shaped outer machine member.

The second inner turnout is thus finished and the fabric is rounded and sewn inwardly.

The present invention provides a knitted fabric having a toe, an annular bed for forming a tubular fabric, and a transfer to separate and remove the tubular fabric from the bed at the end of the knitting operation and to position the bed inside. An apparatus comprising a member is provided.

Characteristically, according to the present invention, when the knitting operation of the tubular fabric is finished and the fabric is completely isolated from the knitting needle, the elastic strips related to the distal periphery of the tubular fabric maintain the tubular fabric. It is programmed to restrain the conveying member.

According to an embodiment of the present invention, the device of the present invention comprises a cushion tube coaxial with a bed, an annular bed, and a tubular conveying member introduced into the bed.

Indeed, the following conditions are given to the embodiment of the device in order to allow the conveying member to be drawn into the cushioning tube and to provide suction as needed in the fabrication stage.

The section tube coaxial with the annular bed has an upper tube and a lower tube.

The lower tube is open to the side and can be connected to the suction sorce at the bottom.

The conveying member enters the suction tube through the lower tube. Suction is provided by the cushion outlet, which is adapted to move coaxially with the annular bed when the conveying member moves coaxially into the cushioning tube. If the toe stitching operation is performed from the outside to the sewing machine on the side of the knitting machine where the bed is located in the embodiment of the present invention can provide a moving carriage that can move from the proximal part of the annular bed to the sewing machine. .

The moving carriage moves the transfer member from the single bed to the sewing device. The raising and lowering system of the conveying member provides a function of raising and lowering the carriage both when the conveying member is in the coaxial position with the sewing device and the single bed.

Other features and embodiments of the device according to the present invention will become apparent from the examples described below.

In particular, the main members constituting the present invention will be described first with reference to Figs.

The main member of the present invention is an annular knitting machine equipped with an annular bed, a sewing station, a conveying member, and an accessory part for conveying, sewing and separating tubular fabrics.

Reference numeral 1 is a knitting machine. This knitting machine is constituted by a machine similar in shape to an annular body, and only relevant parts are shown here for the purpose of understanding the present invention.

Reference numeral 3 shows an annular needle bed. The knitting needle 5 is made to be slidable in a channel formed in the cylinder 6 of the knitting machine.

The cylinder 6 serves to rotate the knitting needle and is supported by a bearing 8 which is an essential component of the gear wheel 7 which receives the driving force from the transmission driven by the main motor of the knitting machine (not shown).

The knitting needle 5 feeds the thread through the guide plate 9, and the dial 11 is arranged above the knitting bed 3 to move the knitting needle under interaction with the knitting bed 3 to form a knitted fiber. have.

Reference numeral P denotes a geometric stitch plane, and the stitch formed by the knitting needle 5 is omitted.

In order to omit the drawings, a mechanical member for controlling the needle is omitted, and these members are well known.

The cushion tube 13 shown as a perspective view in FIGS. 6 to 8 is divided into two parts and coaxially located inside the single bed 3. The upper tube 13A extends toward the cylinder 6 coaxially with the single bed 3. The lower tube 13B is divided into two parts along a plane including the axis of the cushion tube 13. 6 to 8 only the knitting needle 5 and the cushioning tube 13 of the knitting machine are shown for simplicity of the drawing.

The lower end of the cushion tube 13 is connected to the cushion outlet 15 which forms the end of the flexible cushion duct 17 connected to the cushion device (not shown).

As shown in FIG. 6, when the two parts forming the lower tube 13B of the cushion tube 13 are bonded to each other, suction through the cushion duct 17 passes through the cushion tube 13 to form a stitch forming plane. (P) is passed.

The tubular fabric M knitted as shown in FIGS. 1 to 5 is sucked into the cushion tube 15.

In FIG. 1 to FIG. 5, reference numeral B1 starts the knitting of the fabric M as a starting edge made of an elastic body to form an opening at the finished portion.

Knitting of the fabric continues from the demonstration B1 to the distal edge B2 on the elastic strip F1 side.

The elastic strip (F1) is designed to sew the end edge (B2) to sew or sewn after the knitting of the fabric to form a toe sealing, or to be isolated after sewing.

The tubular conveying member 21 is introduced into the cushion tube 13 to lift the fabric M at the end of knitting and send it to the sewing machine to seal the toe. The specific method is described below. .

1 to 5 show a series of steps in the knitting of the tubular fabric (M).

In Figure 1 the fabric M is virtually complete. As shown in the upper part of the figure, the fabric M is provided with an elastic strip F1 thereon, and the fiber structure thereof is shown in FIG.

In Figure 1 the lower side is shown the upper end of the tubular conveying member 21, which is arranged in an axial arrangement together with the cushioning member 13 and the bed 3.

The inner side of the conveying member 21 is a vacuum state is generated by the lower end of the conveying member is connected to the outlet 15. Thus, as indicated by arrow f21 in FIG. 1, the tubular conveying member is raised toward the stitch forming plane P and the fabric M is sucked into the conveying member 21.

In fact, the conveying member 21 is raised toward the stitch forming plane P before the elastic strip F1 is formed.

As shown in Fig. 2, as the conveying member 21 is lifted up, it pulls the whole fiber of the fabric M formed by the knitting needle due to the suction action.

The upward movement of the conveying member 21 continues until its upper end reaches a height slightly above the stitch forming plane P as shown in Fig. 3 and lifts the dial 11 if necessary. At this point, the fabric M is finished and is supplied with the elastic strip F1 completely separated from the knitting needle 5.

The elastic strip F1 separated from the knitting needle sticks around the outer surface of the tubular conveying member 21 as shown in FIG. In order to maintain the correct angular position of the fabric M with respect to the transfer member 21 while the end of the bed is rotated, the transfer member may be rotated together with the bed, i.

At the point when the tubular fabric M is released from the knitting needle 5, the conveying member 21 returns downward as shown in FIG. 5 to start knitting of the new fabric M2.

In this way the extraction step of the fabric (M) overlaps in part with the knitting of the new fabric (M2), which reduces the time required to knit and separate each fabric from the bed. As described above, when the elastic strip F1 is formed at the distal periphery of the fabric M by the single bed 3, the tubular fabric M is damaged by fiber gripping and clamping. It can be picked up and transported out of the knitting machine without the need for a complex machine that entails.

Elastic strip (F1) is to be able to completely free the fabric (M), is locked to the transfer member by the elastic force of the elastic strip (F1).

5, the conveying member 21 moves the fabric M to a sewing station outside of the knitting machine 1, which is then turned out and the elastic strip F1 is moved inward. ) Is sewn along.

The elastic strip is rotated to the right during sewing or after sewing.

6 to 24 show a member for moving the fabric M toward the sewing machine, an operating member for turning out the fabric inwards, and a member for deciding the fabric and turning it back out again. The operating cycle for the closure of the toe of the fabric will be described in detail with reference to the same drawings.

A horizontal guide 33 is provided on the fixed support 31, and the carriage 35 which is movable from its original position to the annular machine 1 travels along the horizontal guide 33 (Figs. 8 to 10). In a distant position, the sewing stain is indicated by reference numeral 37 (Figs. 6 to 7).

A vertical guide 39 is installed inside the carriage 35, and the slide 41 travels along the vertical guide 39.

In the vertical guide 39 and the slide 41 shown in detail in FIGS. 12 to 14, the outside of the carriage 35 is not shown for the omission of the drawing. The slide 41 carries the jaws 43 to restrain the cushion outlet 15. A connector 45 is disposed above the jaw 43 to connect the transfer member 21 to the cushion outlet 15 in a vacuum manner.

The container 45 is supported by the sheet 47, which serves to control the rotation of the tubular conveying member 21 about the axis of the connector 45 and the conveying member 21. . The rotation is made by the actuator 49.

6 to 11 show an operation of pulling, raising, lowering and withdrawing the conveying member with respect to the annular knitting machine 1.

In particular, in Fig. 6, the cushion tube 13 is closed, and the lower tube 13B and the upper tube 13A, which are limited to two portions of the tube, are connected to each other to form a single duct, and the duct is the outlet outlet 15 The steps connected to the flexible cushion duct 17 are shown.

When the fabric reaches the point of time when the fabric is knitted inside the annular system 1, suction through the cushion tube 13 is blocked, but the cushion tube during knitting of the heel in the case where the fabric M is a sock or stockings. The lower tube 13B forming the lower portion of the opening is opened to allow the introduction of the conveying member 21 (see FIG. 7).

As the carriage 35 moves from the position of FIG. 7 to the position of FIG. 8, the tubular conveying member 21 is coaxial with the bed 3 and the cushioning tube 13 of the annular machine 1. .

In the position shown in Fig. 8, the jaw 43 restrains the cushion outlet 15, thereby making the slide 41, the connector 45, and the conveying member 21 into a single structure.

1 to 5, the conveying member 21 is raised until its upper end is slightly above the stitch forming plane indicated by the line P, and the fabric is maintained while the suction state is maintained inside the conveying member. The knitting is made by introducing (M).

This operation is obtained by the slide 41 traveling along the vertical guide 39 located on the carriage.

The cushion outlet 15 is vacuum-connected to the conveying member 21 because it is constrained by the jaw 43 and thus is in contact with the flexible duct 17 inwardly.

8 to 10 show the upward movement of the conveying member (21).

9 and 10, the transfer member is located at the maximum rising point. In FIG. 9, the elastic strip F1 is bound to the knitting needles of the single bed 3 along all the circumferences, and in FIG. 10, the fibers are completely released from the knitting needles, and the elastic strip F1 is the upper portion of the conveying member 21. Cling tightly around its outside.

11 shows the cushioning member 13, in particular the upper tube 13A, the conveying member 21, the single bed 3, and the fabric M being drawn into the conveying member 21, and the elastic strip F1. It is an enlarged cross-sectional perspective view showing that it is held tightly around the upper edge of the transfer member 21.

As shown in part in FIG. 11, the conveying member 21 reproduces the fiber pocket of the toe of the tubular fabric M at the lower portion thereof, and has a profile 21A for facilitating the handling of the fabric during the closing of the toe of the toe. Equipped.

The profile 21A fills the inside of the toe of fiber area to further inflate the fiber to promote the action of the fiber being drawn into the guilloton 53 of the sewing machine. When the fabric M is completely released from the knitting needle 5 and is fixed to the conveying member 21 by the elastic strip F1, the conveying member 21 is lowered again to slide away from the annular machine 1 and slides. 41 and carriage 33 are reversed in the opposite direction.

The conveying member is placed to be located again at the point of FIG. 7, but the tubular fabric M is incident therein and fixed by the elastic strip F1. In the sewing station 37, various members are omitted in accordance with the drawings omitted in FIG.

Figures 7 and 8 show the whole view and Figures 19-23 show in detail all the necessary members located in the sewing station.

The sewing station 37 constitutes a sewing machine which pulls the fibers of the terminal edge of the fabric M into the guillotine 53 to seal the toe portion.

The guillotine 53 is supported on a bearing strip 55 and in interaction with the presser 57.

The presser 57, driven by the actuator 59 and moved by the bucket 61, is fixedly mounted to the arm 62 of the holder 31, and the arm 62 causes the slider 65 to travel. It is similarly fixed to the horizontal guide 63. The slider moves the sewing machine 51.

As shown in FIG. 22, the arm 62 moves the second water rating guide 67. The second slide 69 runs on the second water rating guide 67, and all of the other drawings are omitted.

The two grippers are provided with the driving force necessary for the movement by the actuator 73 mounted on the slide 69, and can move to move toward each other or to separate from each other.

A vertical guide 81 is further installed on the stator, and the slide 83 travels along the vertical guide, which restrains the upper portion of the tubular conveying member 21 while sewing the tubular fabric M. FIG. The misshaped pickup member 85 is moved.

The purpose of this is to position the inlet of the vacuum conveyor 87 over the pickup member 85 to suck and move the tubular fabric that has been closed at the toe.

The unit PI for moving the pair of wheels 93 powered by the actuator 95 is located under the pickup member 85.

The cylinder piston actuator 97 secures the two levers 99 to support the wheel 93 and the actuator 95 at an angle and moves the two wheels toward or away from each other.

The operation of the members described in the sewing station is described below with reference to FIGS. 12 to 24.

The tubular conveying member 21 reaches the position shown in FIG. 7 and the tubular fabric M is interposed therein.

The elastic strip F1 turns over to the outside of the conveying member 21 and tightly adheres to the conveying member as shown in FIG. At this point, the transfer member 21 is axially arranged at the inlet of the vacuum conveyor 87.

By the vertical movement of the slide 41 (indicated by arrow f41 in FIG. 12), the tubular conveying member 21 rises until its upper end reaches the height of the gripper 71.

This movement takes place until the resilient strip F1 is turned over to the outside of the conveying member.

The gripper 71 grips the elastic strip F1 of the fabric M at opposite points in the radial direction.

The tension of the elastic strip F1 is caused by the movement of the gripper 71 which is about to move away from each other (see Fig. 13).

As a possible variant of the invention, the angular direction of the conveying member 21 and the tubular fabric can be controlled at this stage, the fabric being in the correct position to obtain the continuous sewing direction of forming the fabric by the gripper 71. Will be squeezed.

In order to achieve this purpose, one or more reference marks can be aligned by, for example, arranging a predetermined color yarn in the knitting of the edge of the fabric or the elastic strip F1.

Before the gripper 941 is operated at a predetermined position by a photo cell or equivalent means, the angular position of the fabric to be moved by the tubular conveying member 21 is read.

The positioned conveying member 21 and the fabric are rotated by the actuator 49 until the desired angle position is reached.

As shown in Fig. 13, the slide 41 continues the synergy, and the gripper 71 catches the elastic strip F1.

Subsequently, as in FIG. 14, the tubular fabric M is gradually expanded from the conveying member 21 and turned out inward to slide along the upper edge of the conveying member 21 and to the lower edge. Slid along the surface.

The sliding of the fabric M turned inward downwards continues by directing the wheel P3 to the conveying member 21 and rotating them.

On the one hand, as a result of the friction between the wheel P3 and the fabric M, on the other hand the tubular shape towards the lower region of the conveying member as a result of sliding between the fabric and the outer surface of the conveying member 21. The fabric is integrated.

As such, the upper portion of the tubular conveying member 21 is free and the conveying member is constrained by the pickup member 85.

The pickup member 85 is lifted by the sliding of the slide 83 traveling along the vertical guide 81 as shown by the arrow f85 of FIGS. 17 to 18 to be transferred toward the inlet of the vacuum conveyor 87. Take the upper end of the member.

The wheel 93 pushes the fibers of the fabric M down along the outer surface of the conveying member 21. Elastic strips (F1) and distal edges (B2) designed to seal the toe of the fabric are disposed below the bottom of the transfer member (21), as shown in FIGS. 18 and 19, to tension the gripper (21). It is supposed to be received.

The fabric is tensioned in the longitudinal direction by rotating the wheel 93 in the reverse direction.

In this respect, the slide 65 for moving the sewing machine 51 and the guillotine 53 moves in the direction of the arrow f65 (Figs. 19 and 20).

In this way the fibers on which the tension of the fabric M acts concentrate into the guillotine.

Elastic strips (F1) having a greater thickness and density than the knitted fibers of the fabric keeps stretching well towards the distal end of the fabric and ensures that they do not roll up between the grippers 71.

This facilitates the introduction of fibers into guillotine 53.

The introduction of the fibers into the guillotine and continuous sewing operations are facilitated by the profile 21A on the conveying member 21, which stretches and maintains tension the fibers forming the toe pockets. In this step, the carriage 33 is moved to another place in the sewing area by a predetermined method. Therefore, it does not interfere with the toe stitching of the fabric.

As the fiber enters into the guillotine 53, it is compressed by the presser 57 with respect to the bearing strips 55.

In this way, the gripper 71 moves to one side (FIG. 21). The sewing machine 51 reaches the position shown in FIG. 22 and takes it under the presser 57 to sew the fabric edge B2. During this movement, the remaining fabric material constituting the elastic strip F1 is separated and cut in addition to the sewing of the terminal edge B2.

In FIG. 23, the sewing machine 51 is returned to its original position and the presser 57 is moved away from the bearing strip 75 to release the sewn end edge B2 and suture the toe of the fabric M. In FIG. do. At this time or in a series of steps, the upper end of the tubular conveying member 21 is taken to be held at the inlet side of the vacuum conveyor 87 as shown in FIG.

The suction by the vacuum conveyor 87 causes the fibers of the fabric M located at the lower edge of the conveying member 21 to concentrate on the conveying member. The rotation of the wheel 93 again causes the fabric M to slide downward so as to be fully sucked into the tubular conveying member 21 and turned out twice inward along the lower edge of the conveying member.

FIG. 24 shows the inhalation of the tubular fabric M towards the vacuum conveyor 87 and at one moment in this inward turnout phase.

At the end of this stage, the fabric M is first turned out twice along the top edge of the conveying member and then along the lower edge, then spun to the right to be discharged from the opposite end of the vacuum conveyor 87. do.

At this point, the conveying member is reconnected downward to the connector 45 where the slider 41 is located and returned to the annular machine 1 to perform a new operation.

As described above, the angular position of the tubular fabric M with respect to the profile 21A of the conveying member 21 is controlled while moving from the annular machine 1 to the sewing station 37 by the rotation of the connector. Can be changed in any way.

25 schematically shows the fiber structure of the elastic strip F1. The elastic strip F1 can extend by a few rows, for example about 10 rows of knitting.

This elastic stream is formed of rows in which elastic yarns FE and double-sided yarns FD are alternately formed as shown in FIG.

In Fig. 25, each row of stitches is formed with a knitting number equivalent to the middle of the stitch number of the last row forming the fabric (R row). This is accomplished by 1: 1 selection of the needle. As a result of this elastic strip, the elastic strip (F1) can be seen as smaller than the dimensions of the rest of the fabric except the elastic strip.

Figures 26 to 33 show simple and continuous steps of operation and are variations of the invention.

The components of this modification are the same as or correspond to the components or functions of the above-described embodiment, and the reference numeral 200 is used.

Reference numeral 201 denotes a circular knitting machine, 203 denotes an annular knitting bed, and 206 denotes a cylinder formed in the knitting bed 203, and is installed in the channel so that the knitting needle can slide.

The cylinder 206 is rotated by a non-illustrated belt that moves around the toothed wheel 207 and is supported by a support 208 on a fixture (not shown).

Inside the bed 203 and the cylinder 206, the tube 213 rotates while being supported by the bearing 210 as an essential element.

The wall of the tube 213 is interposed between the bearings 210 and is perforated. The perforations of the tube 213 are surrounded by a fixed slide 214 forming a ring-shaped section chamber and connected to the section duct 216 (see FIG. 27).

The ring-shaped cushion chamber and the lower end of the tube 213 are closed by the moving shutter 218 (the position closed in FIG. 26 is shown in FIG. 27).

As such, suction through the duct 216 creates a vacuum inside the tube 213 when the shutter 218 is closed.

The conveying member 221 which is fixed to the lower part of the cylinder 206 consists of two components 221A and 221B.

The lower portion 221B of the transfer member is connected to the flexible cushion duct 217 and moved by the slide 241 traveling on the fixed vertical guide 239.

A pair of wheels 293 on the horizontal axis are powered by a motor (not shown) to interact with the transfer member 221.

A pair of wheels 293 on the horizontal axis are powered by a motor (not shown) to interact with the transfer member 221.

The wheel is constrained to a pair of jaws 283 that are driven by actuators, not shown, for the purposes described below.

Wheel 293 and jaw 283 are shown on the cross section of line A-A in FIG. 26 and line B-B in FIG. 27.

Two grippers 271 which restrain the elastic strip of the knitting machine 201 are located above the jaw 283, both of which are set at an angle of 90 占 폚. The operation cycle of the machine at this point in time will be described (see FIGS. 26 to 33).

The tubular fabric (M) is made on the knitting bed 203, the forming work is finished by sewing the toe of the fabric by continuously forming a row (row) starting from the elastic peripheral portion (B1).

While the fabric is knitted (FIG. 26), the fabric is sucked into the rotating tube as a cylinder.

Suction through the side holes formed in the lower end of the tube 213 causes the fabric to accumulate and adhere the fabric to the end of the inner surface of the cylindrical wall of the tube as shown in FIG.

This does not require the tube 213 to be excessively long and leaves a wide and free space under the needle cylinder.

In the predetermined stage of the knitting operation, for example, while the fabric M is being knitted on the heel, the shutter 218 is opened, and the tubular conveying member 221 enters the tube 213 to form a stitch forming plane. It is lifted by the vertical movement of the slide 241 along the guide 239 until it reaches.

When the knitting operation of the fabric M is finished and the elastic strip F1 is formed, the tubular conveying member 221 rises upward of the stitch forming plane (FIG. 27), and the fiber is knitted by the knitting needle of the single bed 203. Can be released and freed.

Thus, the fabric is held by the elastic strip F1 on the outer surface of the tubular conveying member 221 proximate the upper periphery in a similar manner as the conveying member as in FIG.

The continuous downward movement of the slide 241 moves the tubular feed member 221 out of the needle cylinder 206 until the resilient strip F1 is positioned next to the gripper 271.

At the same time, the shutter 228 can be closed again because the tubular conveying member completely exits the tube 213.

The vacuum, again generated on the shutter, tensions the new fabric M1 that begins to form on the single bed 203 and causes it to be sucked vertically downward (FIG. 28).

While the new fabric M1 is formed in the annular bed 203, the fabric M is pulled downward by the gripper 271, although not shown for the purpose of achieving the tubular transfer member 221. It is therefore also carried by a slide or other equivalent member which guides the vertical movement.

The gripper 271 is lowered until the elastic strip F1 is slightly below the engaging portion of the two components 221A and 221B of the conveying member 221 (see Fig. 29).

Sliding motion of the fabric is assisted by rotation of the wheel 293 in the proper direction.

When this state is reached, the wheel 293 continues to rotate, and the fabric M, which includes the resilient edge B1, finishes exiting from the inside of the tubular conveying member 221 and turns out of the inside of the fabric. The process is complete.

The fibers of the fabric M are integrated between the wheel 293 and the gripper 271 (see FIG. 30). When this state is reached, or before the fabric is yet fully turned inward, the lower portion 221B of the conveying member 221 is held in the slide 241 while the upper portion 221A is held and held by the jaw 283. It is released from the upper portion 221A in the axial direction as the lower portion moves (see FIG. 31).

Movement of wheel 293 is reversed to tension the fabric longitudinally between wheel and gripper 271.

As the guillotine 253 of the sewing machine is brought towards the fabric (shown by arrow f253 in FIG. 32), the lower edge of the fabric is tensioned by the gripper 271 so that it is guided into the guillotine with an elastic strip below the guillotine.

In this way, the sewing of the edge to form the toe suture and separation of the elastic strip (F1) is performed.

The sewn fabric is separated as the suction duct 287 is coupled to the upper end portion 221A of the transfer member 221 as shown in FIG.

When the wheel 293 rotates in the opposite direction to the reverse direction and pushes the fabric toward the lower side of the conveying member 221 to make two turnouts inside the tubular member, the fabric is sucked and separated from the top.

The machine separates and sews the fabric (M1). A new cycle of emissions can be started.

Figure 34 shows an alternative embodiment of the last step of the above cycle. In this embodiment, when the upper portion 221A of the conveying member 221 vibrates toward the guillotine (for example by the jaw 283), the guillotine 253 of the sewing machine does not move toward the conveying member 221 and the gripper 271. Don't (or just move a bit).

This may be a suitable solution to solve the insufficient space to take the sewing machine to the fabric.

35 shows as another variant the guillotine 253 and the sewn tubular fabric by moving the upper portion 221A of the tubular conveying member 221 toward the guillotine 253 and a sewing machine (not shown) as before. Move.

However, in this embodiment, it is different from the transverse movement rather than the vibration movement. In order to achieve this object, for example, the jaws 283 and the grippers 271 are mounted on a predetermined slide (not shown) and the wheels 293 move apart, as in the above method related to the preceding embodiments.

In this embodiment, the conveying member 221 has a cross-sectional shape similar to that of the portion 21A and is positioned to be close to the engaging surface between the upper and lower portions 221A and 221B of the conveying member.

The accompanying drawings of the present invention merely show specific embodiments of the present invention, and it goes without saying that the shape, arrangement, and the like may be changed without departing from the basic spirit of the present invention.

Any relationship number in the claims is for the purpose of clarifying the specification and accompanying drawings for the purpose of understanding the claims and does not limit the scope of protection.

By introducing the tubular fabric into the guillotine of the sewing machine, it is possible to obtain a method and a device which can simplify the pulling action in forming the suture to the toe and promote the sewing operation in a more mechanical manner.

Claims (37)

In a method of knitting a tubular fabric having a toe edge and toe designed to form the toe of the fabric up to the starting edge on the annular bed, The elastic strip is formed by knitting needles along the distal edges, and when the forming of the elastic strip is completed, the tubular fabric is completely released from the knitting needles of the single bed and separated and removed. A method of manufacturing a tubular knitted fabric and suture a toe thereof, characterized in that it is fastened to a moving member by an elastic strip to move out of the annular bed. The method of claim 1, wherein said elastic strip is selected from the knitting needles of said bunk beds and uses at least one elastic thread. The method of claim 2, wherein the conveying member is coaxially drawn into the annular bed, at least the height of the stitch forming plane defined by the knitting needle, The conveying member sucking the tubular fabric formed by knitting needles in the inner side of the annular bed, into the conveying member; At the end of the elastic strip, the tubular fabric is separated and moved from the single bed, and in this way, the fabric is held from the annular bed where the elastic strip formed at the end of the tubular fabric is elastically held on the conveying member. A method of manufacturing a tubular knitted fabric and suture the toe thereof, comprising the step of taking out the conveying member. 4. The tubular knitted fabric manufacturing method according to any one of claims 1 to 3, wherein the conveying member is a tubular member, and a method of sewing the toe portion thereof. 5. The tubular knitted fabric manufacturing according to any one of claims 1 to 4, wherein a knitting of a tubular fabric is started on the annular bed when the conveying member is separated from the annular bed. And a method of sewing the toe portion thereof. The method according to any one of claims 1 to 5, Arranging the cushion tube inside the annular bed, the cushion tube having an openable portion under the bed; Generating a suction action inside the cushion tube; Starting the formation of the tubular fabric by the eccentric belt while the formed fibers are sucked into the cushion tube; A lower portion of the cushioning tube is opened in the intermediate step of forming the tubular fabric, and a conveying member is introduced into the cushioning tube; Generating suction to the inside of the conveying member; The conveying member rises coaxially with the cushioning tube above the height of the stitch forming plane, and sucks the formed tubular fabric into the conveying member; Locking the tubular fabric to a transfer member by an elastic strip; And removing the tubular fabric from the annular bed by the transfer member, and a method of sewing the toe of the tubular fabric. 7. The top of the transfer member according to claim 6, wherein the transfer member is drawn up above the stitch forming plane and then raised higher with respect to the stitch forming plane so that the upper end of the transfer member is the stitch forming plane before the tubular fabric is released from the knitting needle. Method of sewing a toe of the tubular knitted fabric, characterized in that it is placed on top of. 8. The conveying member according to any one of claims 1 to 7, wherein the conveying member engages the tubular fabric and moves it to the sewing machine, The tubular fabric is latched in place of the elastic strip, The tubular knitted fabric is tubular knitted fabric, characterized in that the end of the elastic strip and the tubular fabric is turned out inward until the end of the lower end of the conveying member is waiting to slide on the outer surface of the conveying member Manufacture and method of suturing the toes thereof. 9. The tubular fabric of claim 8, wherein the tubular fabric is engaged at two points diametrically opposed to one another in the radial direction along the distal edge at the position of the resilient strip, causing an inward turnout. After the tubular fabric is turned out, the distal edge and the elastic strip are tensioned by two points spaced apart from each other in opposite directions in the radial direction. To the point of the elastic strip extending between the distal edge and the two points, The end peripheral portion is drawn into the sewing machine, Distal periphery is sewn to toe is formed, A method of manufacturing a tubular knitted fabric characterized in that the elastic strip is separated out of the strip and suture the toe. 10. A method according to claim 9, wherein when said tubular fabric is turned out inward, at least its leading edge continues to rest on the outer surface of said conveying member. 7. The tubular knitted fabric according to claim 6, wherein the cushion tube is rotated belonging to the single bed, and the tubular fabric is temporarily attached to the inner surface of the tube by suction of the cushion tube. And a method of sewing the toe portion thereof. In the device consisting of an annular bed for knitting a tubular knitted fabric and a conveying member which is sent to the inside of the bed and separates the fabric from the bed when the knitting of the tubular fabric is completed, the bed is A resilient strip is programmed to form a resilient strip on the distal end of the tubular fabric at the end of knitting of the tubular fabric, and retains the tubular fabric on the conveying member when the fabric is fully released from the knitting needle. Apparatus for producing a tubular knitted fabric, characterized in that the closure and the toe of the toe. 13. The apparatus of claim 12, wherein the transfer member is a tubular body and the toe is sealed. 14. The tubular knitted fabric manufacturing method according to claim 12 or 13, wherein the cushion tube is coaxially formed inside the annular eccentric, and the conveying member is coaxially drawn into the cushion tube. A device for sealing the toe. 15. The suction tube according to claim 14, wherein a cushion tube coaxial with the annular bed and having a lower openable portion is accessible to the suction source, The conveying member is introduced into the cushion tube through the lower portion of the tubular knitted fabric, characterized in that the device for sealing the toe. 16. The tubular knitted fabric manufacturing apparatus according to claim 15, comprising a cushion outlet connectable to the conveying member, and a toe sealing portion thereof. 17. The tubular knitted fabric manufacturing method according to claim 16, wherein the cushion outlet is configured to move coaxially with the annular bed when the conveying member is drawn into the annular bed. A device for sealing the toe. The method according to any one of claims 12 to 17, wherein A tension member for locking the tubular fabric at the point of the elastic strip and turning out the tubular fabric inward to slide along the outer surface of the conveying member; And a feeding means for causing relative movement between the tension member and the conveying member in a direction parallel to the conveying member. 19. The apparatus of claim 18, wherein the tension member comprises two corresponding grip means adapted to hold the tubular fabric while moving toward or away from each other at approximately two radially opposite points. A device for producing tubular knitted fabrics and sewing the toes thereof. The method according to any one of claims 12 to 19, The conveying member is a tubular knitted fabric, characterized in that the locking by the jaw and the device for sealing the toe. 21. The device of claim 20, wherein the jaw is movable vertically to the conveying member along a vacuum conveyor. The method according to any one of claims 12 to 21, And a wheel configured to hold the outer surface of the conveying member and to pass the tubular fabric between the outer surface of the conveying member and the wheel, and to suture the toe of the tubular knitted fabric. 23. A device according to any one of claims 12 to 22, wherein the tubular fabric is drawn into the guillotine of a sewing machine. The method according to any one of claims 12 to 23, wherein Apparatus for producing tubular knitted fabric and suture the toe, characterized in that the suction of the tubular fabric with a vacuum conveyor after the end of the toe of the end of the transfer member. 18. The device of claim 16 or 17, wherein the cushion outlet can be selectively connected to the lower portion of the transfer member and the cushion tube. 26. The carriage according to any one of claims 12 to 25, characterized in that the conveying member is movable by a carriage which is movable from a position near the annular bed to the sewing station and vice versa. An apparatus for producing a tubular knitted fabric and sewing the toe portion thereof. 27. The device of claim 26, wherein the carriage carries a lifting system for the conveying member and sutures its toe. 28. A tubular knitted fabric production according to any one of claims 25 and 26 or 25 and 27, wherein the carriage carries a component that latches the cushion outlet for connecting the cushion outlet to the conveying member. And a device for sealing the toe. 29. The device of claim 28, wherein the carriage carries a tubular connector between the cushion outlet and the transfer member. 25. The tube according to any one of claims 14 to 24, wherein the cushion tube rotates together with the annular bed, a suction hole is provided in the lower portion of the tube, and a locking means is provided at the lower portion. A device for manufacturing a knitted fabric of a shape and sewing the toe portion thereof. The method according to any one of claims 12 to 30, The conveying member is a coaxially coupled, detachable upper, lower fabrics, characterized in that consisting of the device and the toe sealing device. The method of claim 31, wherein And a moving system for moving the upper portion of the transfer member from the axial arrangement position of the annular bed to the vicinity of the sewing machine. 33. A device according to claim 32, wherein the moving system causes transverse or vibration of the upper portion of the conveying member and sutures its toe. The method according to any one of claims 12 to 33, wherein And said conveying apparatus includes a reading means at each position and an actuator for positioning each of the tubular knitted fabrics and the toe-sealing portion thereof. A method of manufacturing a tubular knitted fabric and a method of sewing a toe of the toe, wherein an elastic strip capable of facilitating the introduction of the terminal edge into the guillotine of the sewing machine is formed by the selection of an annular knitting needle. 36. The tubular knitted fabric manufacturing method according to claim 35, wherein the elastic strip is a tubular fabric which is knitted using one or more elastic yarns by selection of knitting needles of the annular bed. Way. The method of claim 35 or 36, The distal edge is introduced into the sewing machine to sew the distal edge to form a seal between the distal edge and the elastic strip to form a toe of the tubular fabric, and the elastic strip is separated from the tubular fabric during or after sewing the toe of the toe. Method of manufacturing a tubular knitted fabric characterized in that it is made and the toe of the toe.