KR101222116B1 - Method and device for splicing yarn - Google Patents

Abstract

A splicing method for a yarn for supplying a yarn feeding device to a knitting machine while sequentially selecting one of a plurality of heterogeneous yarns having different colors and the like, and an apparatus thereof.

The thread ends of the two yarns Y1 and Y4 to be threaded are aligned and clamped in the splice nozzle 21 in a state in which they are aligned in the same direction. Thereafter, before the thread cutting side of the two threaded threads is thread-cut, a jet air flow is generated in the splice nozzle, and the jet air flow is acted on the yarn in the splice nozzle to seal the thread end side of the yarn. To explain. After the action of the blowing air flow or the action, the yarn is cut and the yarn is connected.

Since the thread is jointed before the cutting, the shrinkage of the thread tip due to the cutting does not occur even in the thread joint of the elastic yarn.

Description

Splicing method of yarn and its device {METHOD AND DEVICE FOR SPLICING YARN}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for supplying knitting yarn to a feeding machine in a knitting machine, and the like, in particular, one of plural kinds of heterogeneous yarns having different colors and the like is sequentially selected, and the yarn feeding of the knitting machine is carried out each time. The present invention relates to a splicing method of a seal effective for supplying a device, and a device thereof.

As is well known, the tendency of decorative variability with the diversification of knitted fabrics is very remarkable. Therefore, in the previous step of improving the knitting machine, in particular, the technology related to the yarn feeding to the yarn feeding device in the knitting machine, that is, the knitting yarn supplying to the knitting machine, the color is changed according to the predesigned knitted fabric pattern. Improvements in technology, such as selecting different yarns sequentially, threading them, and automatically supplying the threaded yarns to a knitting machine, are desired.

Conventionally, a thread selector and a thread joint device are formed between a plurality of types of yarn yarn packages and knitting machines having different colors and the like, and the yarn selected by the thread selector is actually threaded with the knitting yarn in the knitting process. There has been proposed an apparatus for organizing colors and patterns. In such a device, there is no effective thread switching device that holds thread ends of plural kinds of packages, opens only one selected yarn, introduces it into a thread joint, and thread joints between the knitting yarn during knitting.

Patent Document 1: Japanese Unexamined Patent Publication No. 2004-27463 (Summary, FIGS. 1-6)

Patent Document 2: Japanese Patent Application No. 2005-25124 (Summary, FIGS. 1 to 3)

Challenges to be solved by the invention

Thus, the present invention relates to a thread switching device in a knitting machine or the like as described above, and among the plurality of different types of yarns having different colors and the like, one of them is sequentially selected, and the knitting machine is made with a thread joint each time. The present invention provides a splicing method and a device for splicing a yarn which are very effective for supplying a feeding device of a yarn.

Means for solving the problem

In order to achieve the above object, the present invention specifically accommodates and clamps the splice nozzle in the state where two thread ends to be threaded are aligned in the same direction, and the thread ends of the two threaded threads are threaded. Before cutting, the blowing air flow is generated in the splice nozzle, the blowing air flow is acted on the yarn in the splice nozzle to decompose the thread end sides of the two yarns to be joined, and to act the blowing air flow. The state or the splicing method of the yarn which cut | disconnected a thread and thread-jointed after acting is comprised.

Moreover, in this invention, the invention of Claim 2 is a splicing method of the yarn of Claim 1, Comprising: Two yarns to which the said thread joint is an elastic yarn are characterized.

Moreover, in this invention, the invention of Claim 3 consists of a thread joint nozzle provided with the thread accommodating hole which accommodates the two threads in the state which made the two thread ends to be thread matched toward the same direction, The thread joint nozzle includes air ejecting means for ejecting compressed air from a direction intersecting with the thread receiving hole, and grips two threads accommodated in the thread receiving hole on one side of the thread receiving hole in the thread fitting nozzle. A clamp means and a cutter means for cutting the thread end side of the two yarns on the other side of the yarn receiving hole in the threaded joint nozzle, and the air ejecting means and the cutter means, two cutters being cut by the cutter means. Before the thread cutting, a splicing apparatus for the yarn is formed in which a timing control means for injecting compressed air into the two yarns by the air blowing means.

Effects of the Invention

According to the splicing method of a thread and the apparatus according to the present invention, in the state in which two thread ends to be thread-matched are aligned in the same direction, they are received and clamped in the thread joint nozzle, and the thread end sides of the two threads to be thread-jointed are clamped. Before the thread cutting, a jet air flow is generated in the splice nozzle, the jet air flow is acted on the yarn in the splice nozzle to decompose the thread end sides of the two threads to be joined, and the jet air flow is actuated, or When the yarn is cut, the two yarns are already starting to get entangled by the action of the blown air flow, and the yarns can be reliably threaded without protruding from the yarn joint nozzles. have. In the case where the thread to be threaded is an elastic yarn, the thread joint is formed by injection of the blown air stream before the thread is cut, thereby reliably solving the problem that the end of the thread shrinks and jumps out during thread cutting. It also works very well.

Carrying out the invention  Best form for

EMBODIMENT OF THE INVENTION Hereinafter, the splicing method which concerns on this invention, and its apparatus are demonstrated in detail based on the specific Example shown in drawing. The embodiment described below is of the structure which combined the splicing method and its apparatus with the flat knitting machine as shown in FIG.

1 is a schematic side view showing a splicing method and a flat knitting machine equipped with the apparatus according to the present invention. This flat knitting machine includes a machine frame 40 and a feeding machine 41 incorporated in the machine frame 40. The thread selector 1 and the thread joint 2 are combined with this machine frame 40. As shown in FIG. In the vicinity of the machine frame 40, for example, eight types of knitting packages W1 to W8 are provided. Each of these knitting packages W1 to W8 is constituted by knitting yarns Y1 to Y8 of different colors. The machine frame 40 is comprised with the needle bed 42 which adjoined the plurality of knitting needles freely.

Moreover, the machine frame 40 is provided with the carrier 43 and the carriage 44 which can be reciprocated, and the needle 43 of the needle bed 42 is moved forward and backward by the movement of the carriage 44, and the carrier 43 is carried out. Is enacted. The eight types of knitting yarns Y1 to Y8 wound on the knitting packages W1 to W8 are supplied to the yarn selector 1, and among the eight kinds of knitting yarns Y1 to Y8, the yarn selection apparatus 1 is selected. One knitting yarn (hereinafter referred to as 'selective yarn') is threaded together with the knitting yarn in knitting (hereinafter, referred to as 'knit yarn') by the thread joint device 2, and is fed to the yarn feeding device 41. By this, it is conveyed to the carrier 43, is gripped by the carrier 43, it is supplied to the needle bed 42, and reciprocates, and the knitted fabric 45 is knitted. The knitting yarns Y1 to Y8 are supplied to the thread selector 1 via the top spring 46 for applying tension. The color of the knitting yarns Y1 to Y8 during knitting is changed according to the pattern of the knitting fabric 45 knitted by the yarn selecting device 1 and the yarn splicing device 2.

The thread switching device in the knitting machine or the like is basically a yarn selecting device for selecting a yarn between a plurality of yarn feeding packages W1 to W8 having different colors and the yarn feeding device 41 in the knitting machine. (1) and a yarn splicing device 2 for threading the yarn selected from the yarn selection device 1 and the knitting yarn in knitting.

The thread switching device includes suction means 28 for sucking and holding a plurality of threads collectively, and clamp means for collectively clamping a plurality of threads between the suction means 28 and the yarn feeding packages W1 to W8 ( 29), the clamp means 29 is arrange | positioned in two places along a seal guide, and consists of the 1st clamper 29A and the 2nd clamper 29B which selectively operate | move mutually.

In this thread switching device, the first clamper 29A in the clamp means 29 interlocks with the suction means 28, and at the time of the suction operation of the suction means 28, a plurality of threads in the thread guide are collectively collected. It is configured to clamp.

In this thread switching device, the second clamper 29B in the clamp means 29 is usually clamped to a plurality of threads collectively, and to the thread holding member 31 which opens the clamp at the time of selection of the selection. The first clamper normally opens the clamp, presses the thread before opening the thread holding member 31 at the time of selection of the selection, and opens the thread press after the thread holding starts. It is composed of 30).

2 is a schematic perspective view showing an enlarged seal selector 1, a seal splicing apparatus 2, and the like. The thread selector 1 is provided with eight thread selector plates G1 to G8 at the top. Each thread selection plate G1-G8 is equipped with the thread insertion ring g in the lower part. The knitting yarns Y1 to Y8 from the knitting packages W1 to W8 are inserted into the thread insertion rings g of the thread selection plates G1 to G8, and one of them is transferred to the yarn feeding device 41. This thread insertion ring g is formed in an annular shape, and is comprised so that knitting yarns Y1-Y8 may be inserted in this annular part. And when changing the kind of knitting yarn, as shown by the dashed-dotted line in FIG. 2, the yarn selection boards G1-G8 which hold the knitting object to be changed are moved inward, and the knitting yarn is positioned at the selection position. . These operations will be described in detail later.

The yarn selector 1 is provided with a separator 12 for dividing and knitting a knitting yarn and other knitting yarns. In addition, the thread selection device 1 is provided with a thread guide lever 10 for guiding the knitting yarn at the above-described selection position to the thread joint position. FIG. 3 is a schematic perspective view showing the details of the main parts of the thread selection device 1, and FIG. 4 is a schematic perspective view showing the details of the main parts of the seal splicing device 2.

As shown in FIGS. 2 and 3, the thread selector 1 is provided with a thread pressing member 30, a thread holding member 31, and a thread tip holding suction 32 in the vicinity of the separator 12. . As shown in FIG. 2 and FIG. 3, the thread pressing member 30 is configured to move forward and backward by the thread pressing cylinder 33, and is normally retracted, and the separator 12 and the thread pressing cylinder ( The seal guide between the acting end 33a in 33 is opened, and between the separator 12 and the acting end 33a in the thread pressing cylinder 33 during the forward operation. Clamp the seals together.

On the other hand, the seal holding member 31 is configured to move forward and backward by the seal holding cylinder 34. The seal holding member 31 is advanced in normal operation, and acts on the separator 12 and the seal holding cylinder 34. The seals are collectively clamped between the 34a, and retracted at the time of the yarn switching to open the seal guide between the separator 12 and the working end 34a of the seal holding cylinder 34. It is.

The thread splicing apparatus 2 is combined in the downward direction of the thread selector 1. As shown in Figs. 2 and 4, this seal splicing apparatus 2 is a structure in which two knitting yarns are thread-joined while their thread ends are aligned in the same direction. It is a splicer type thread joint device which performs thread joint. This seal splicing apparatus 2 comprises the splice nozzle 21. This splice nozzle 21 is provided with the thread accommodating hole 21a which accommodates two chambers, in the state which matched the thread end part of the two threaded joints toward the same direction. Moreover, this splice nozzle 21 is provided with the air blowing means 26 which has the nozzle opening 21b which blows out airflows, such as compressed air, from the direction which intersects with the seal accommodation hole 21a, and this air The blowing means 26 is provided with the solenoid valve 27, and consists of controlling the blowing of air by the opening-closing control of the solenoid valve 27. As shown in FIG.

This thread splicing apparatus 2 is provided with the disk guide 20 for guiding two knitting yarns to a thread joint position, and is housed in the thread accommodating hole 21a in one side of the thread accommodating hole 21a. Clamp means 22 for holding two threads and cutter means 23 for cutting two thread end portions on the other side of the thread receiving hole 21a in the thread joint nozzle are provided. This seal splicing apparatus 2 is configured to operate by one drive motor 50. The thread positioning part 35 for positioning the knitting yarn in the downward direction of the thread joint device 2 and conveying it to the feed yarn 41 is provided. This thread positioning part 35 has a slit-shaped notch, and is knitting by positioning on this notch.

Fig. 5 is a view showing a seal guide lever, Fig. 5A is a schematic front view thereof, Fig. 5B is a schematic right side view seen from the right side of the drawing of Fig. 5A, and Fig. 5C is a sectional view taken along the line I-I in Fig. 5B. As shown in FIG. 5A, the thread guide lever 10 has a main body 105 formed in a substantially arcuate shape. The thread guide lever 10 is equipped with the 1st engagement part 101 for engaging the selection yarn at one front-end | tip. As shown in Fig. 5B, the first engaging portion 101 is formed by being cut (notched) in a V shape. The thread guide lever 10 is provided with the rotating shaft 107 at the other end, and is comprised so that rotation is possible in the arrow direction II centering around this rotating shaft 107. As shown in FIG. Furthermore, the thread guide lever 10 is provided with the 2nd engagement part 102 for engaging a knitting yarn in the center substantially. As shown in FIG. 5B, the second engagement portion 102 protrudes from the main body portion 105. As shown in FIG. 5C, a pair of wall portions 106 and 106 'are provided on both sides of the main body portion 105, and the U-shaped thread restricting portion 103 is formed by the respective portions 105, 106 and 106'. Therefore, this thread regulating part 103 is formed as a c-shaped thread regulating part 103 opened in the outward direction almost over the outer periphery of the thread guide lever 10. By arrange | positioning the selection yarn inside the thread control part 103, it can guide to the thread joint position, restricting the knitting yarn to a specific position.

Next, the operation of changing the type of knitting yarn during knitting will be described in detail with the operation steps shown in FIGS. 6 to 9. 6-9 is a figure for demonstrating operation | movement of a thread selector etc. FIG. The yarn selector operates over the first to eighth steps according to the steps shown in Figs. 6A, 6B, 7A, 7B, 8A, 8B, 9A, and 9B. A-1 and B-1 in each figure are schematic front views, and A-2 and B-2 in each figure are schematic left side views corresponding to A-1 and B-1, respectively. 10 is a view for explaining the operation step of the seal splicing apparatus according to the present invention in order. 11 is a perspective view showing a part of a device including a disc guide.

In the first step of the yarn selection device 1, as shown in Figs. 6A-1 and 6A-2, eight knitting yarns Y1 to Y8 are held in the eight yarn selection plates G1 to G8. have. And knitting yarn Y4 (shown by a dashed-dotted line) is arrange | positioned inside the separator 12 (left side of the figure of FIG. 6A-2). In addition, seven knitting yarns Y1 to Y3 and Y5 to Y8 other than the knitting yarn Y4 are disposed outside the separator 12 (the right side in the drawing in Figs. 6A-2), and are clamped by the thread holding member 31. Reserved. The seal holding member 31 is provided with an air solenoid for controlling the air flow rate, and is configured to hold and open the knitting yarn by the operation of the piston cylinder by the air solenoid. In this state, knitted yarn Y4 is conveyed from the upward direction to the downward direction and is fed, passing through the front surface of splice nozzle 21.

Then, from the controller (not shown) provided in the flat knitting machine, the yarn switching signal resulting from the knitted fabric pattern input in advance is transferred to the yarn selecting device 1, the yarn splicing device 2, the yarn feeding device 41, and the like. Is sent. By this signal, the yarn feeding device 41 stops, the movement of the knitting yarn Y4 stops, and the yarn selecting device 1, the yarn joint device 2, and the like operate. In the second step, as shown in Figs. 6B-1 and 6B-2, the actual selection plate G1 holding the selection yarn Y1 (denoted by a dashed line) to be subjected to the type change is driven. do. By the real selection plate G1 moving inward, the selection yarn Y1 is positioned at the selection position P1. After that, the thread guide lever 10 rotates (forward rotation) in the direction of the arrow III.

Subsequently, in the third step, as shown in FIGS. 7A-1 and 7A-2, the first engaging portion 101 of the thread guide lever 10 moves to the selected position P1 by the rotation of the thread guide lever 10. Engage the optional Y1 in parentheses. The selection yarn Y1 is disposed in the thread restraint section 103 of the thread guide lever 10, whereby the guide thread Y1 is guided downward in the state regulated at the specific position P2. The second engaging portion 102 of the seal guide lever 10 protrudes more than the separator 12 and moves along the arcuate upper edge portion 12a of the separator 12. 7A-1 shows the state at the moment when the second engaging portion 102 is engaged in contact with the knitting yarn Y4. In this state, a part of the selection yarn Y1 and the knitting yarn Y4 are located inside the separator 12.

In addition, in the fourth step, as shown in Figs. 7B-1 and 7B-2, the seal guide lever 10 is further rotated, and the first engaging portion 101 is lower than the splice nozzle 21. It is disposed at the lowest position. Therefore, the selection yarn Y1 is engaged with the first engaging portion 101 and is guided while sliding. Further, the selection yarn Y1 is guided while sliding the seal restricting portion 103 in a state where it is regulated at the specific position P2 at the seal restricting portion 103 of the seal guide lever 10, and the splice nozzle 21 Is guided to the front. In this manner, the guide yarn Y1 is guided while regulating the yarn Y1 to the specific position P2 of the real regulator 103 so that the yarn Y1 is intertwined with the knitting yarn Y4 and the other yarns Y2 and Y3. It can move to the front surface of the splice nozzle 21, without raising.

And as mentioned above, in the state shown to FIG. 7A-1 and FIG. 7A-2, the 2nd engagement part 102 is contacting and engaging the knitting yarn Y4, and from this state, the thread guide lever 10 was carried out. Rotates further (see FIGS. 7B-1 and 7B-2). As a result, the knitting yarn Y4 is engaged with and guided to the second coupling portion 102 and moves outward from the inside of the separator 12. That is, the knitting yarn Y4 moves to the standby position P3 where the knitting yarns Y1 to Y3 and Y5 to Y8 (knit yarns other than knitting) wait.

Subsequently, in the fifth step, as shown in FIGS. 8A-1 and 8A-2, the yarn pressing member 30 is driven, and knitting yarns Y2 to other than the selection yarn Y1 inside the separator 12 are included. Clamp Y8). Thereafter, before the thread holding member 31 is driven to open the thread tip, suction of the thread tip holding suction 32 is started. As a result, the thread tip holding suction 32 sucks and grips the thread tips of the knitting yarns Y1 to Y3 and Y5 to Y8. The seal pressing member 30 is configured to hold and open the knitting yarn by the operation of the piston cylinder by the air solenoid. As the suction force of the thread tip holding suction 32, as shown in Fig. 1, the thread tip of the knitting yarns Y2 to Y8 cannot be reliably held by the tension added by the repulsive force of the top spring 46 installed in the horizontal knitting machine. The thread pressing member 30 is provided.

Then, in the sixth step, as shown in Figs. 8B-1 and 8B-2, the yarn Y1 in which the thread inserting portion 20a provided in the disc guide 20 is guided on the front surface of the splice nozzle 21 is selected. And the knitting yarn Y4 is pushed into the thread receiving hole 21a of the splice nozzle 21 and inserted. Thereby, the selection yarn Y1 and the knitting yarn Y4 are arrange | positioned at the thread joint position P4.

As shown in FIG. 11, the 1st drive gear 51 and the 2nd drive gear 52 drive by rotation by the drive of the drive motor 50. As shown in FIG. The first drive gear 51 is connected to a link mechanism (not shown) for performing a series of operations of the seal splicing apparatus 2 described later. The second drive gear 52 drives the disc guide 20. The second drive gear 52 meshes the first driven gear 53 and the second driven gear 54, and rotationally drives the disc guide 20 formed in the second driven gear 54. A part of the disc guide 20 is notched (cut off), and the key-shaped thread insertion part 20a is provided in one side of this notch part. As the disc guide 20 rotates in the direction of the arrow IV, the selection yarn Y1 and the knitting yarn Y4 move in the engaged state by being caught by the thread inserting portion 20a, and the splice nozzle 21 Is pushed into the thread receiving hole 21a.

At the same time, the seal splicing apparatus 2 operates as shown in FIG. 10. The seal splicing apparatus 2 is an air splicer which is thread-jointed by jet of compressed air, and has a splice nozzle 21. The splice nozzle 21 is provided with the thread accommodating hole 21a which accommodates two knitting yarns. Moreover, this splice nozzle 21 is provided with the air blowing means 26 which blows out compressed air with respect to the seal accommodation hole 21a. And the nozzle opening 21b is provided in the direction which cross | intersects the seal accommodation hole 21a from this air blowing means 26. As shown in FIG. The air blowing means 26 is configured to control the blowing of air by opening and closing the solenoid valve 27.

One side of the splice nozzle 21 is provided with the clamp means 22 for holding two knitting yarns accommodated in the thread receiving hole 21a and arranged in the thread joint position P4, and two on the other side. The cutter 23 which cuts the thread end side of knitting yarns, and adjusts length is provided. In addition, one side of the splice nozzle 21 is provided with a nozzle cover 24 for closing one side of the yarn receiving hole 21a, and a thread takeout lever 25 for adjusting and pulling out the thread joint length. The splice nozzle 21, the clamp means 22, the cutter 23, the nozzle cover 24, and the thread extraction lever 25 are connected by a link mechanism (not shown) connected to the first drive gear 51. It is configured to drive in series.

As shown in Fig. 10A, the selective yarn Y1 and the knitted yarn Y4 are sucked and grasped by the thread end holding suction 32 in a state where the thread ends coincide in the same direction, and the thread receiving hole of the splice nozzle 21 ( 21a), and is disposed at the thread joint position P4. 10B, the selection yarn Y1 and the knitting yarn Y4 are gripped by the clamp means 22, and the nozzle cover 24 and the thread extraction lever 25 close the yarn accommodation hole 21a. Move to the position. In this invention, before the thread cutting of the thread end of the two threaded threads is carried out, the blowing air flow is generated in the splice nozzle 21, and the blowing air flow acts on the yarn in the splice nozzle 21, The thread end sides of the two yarns are decomposed, the yarn is cut while the jet air flow is applied, the air is blown out, and the splice nozzle 21 is blown to generate a jet air flow in the splice nozzle 21, The blowing air flow is applied to the yarn in the splice nozzle 21 to decompose the thread end sides of the two yarns to be joined, and after blowing the blowing air flow, the blowing air flow is once stopped, the yarn is cut, It consists of including the structure which completes a thread joint at the time of cutting | disconnection.

For example, according to the above configuration, in the step shown in Fig. 10B, the air blowing means 26 is operated to provide compressed air to the selection yarn Y1 and the knitting yarn Y4 through the nozzle opening 21b. Spray and explain the end of each yarn. As shown in FIG. 10C, the cutter 23 operates to cut the thread end sides of the selection yarn Y1 and the knitting yarn Y4 to a predetermined length. The remaining thread tip of the selection yarn Y1 is sucked by the thread tip grip suction 32. In the present invention, the air blowing means 26 and the cutter means 23 are used to inject blowing air flows into the two chambers by the air blowing means before the two cutting threads are cut by the cutter means 23. The timing control means TC can be formed. By the operation of the timing control means TC, the timing of generation of the blown air flow by the air blowing means 26 and the operation timing of the cutter means 23 are controlled to control both the former configuration and the latter configuration. Can be performed selectively as appropriate.

After the step shown in FIG. 10C, as shown in FIG. 10D, the thread take-out lever 25 slightly moves in the direction of the arrow V to adjust the joint lengths of the selection yarn Y1 and the knitting yarn Y4. In the state of FIG. 10E, the thread takeout lever 25 is further moved in the direction of the arrow V, and the selective yarn Y1 and the knitted yarn Y4 are pulled out from the yarn receiving hole 21a (see FIG. 10F). . When the thread end of the disassembled portion passes near the ejection opening of the compressed air of the thread receiving hole 21a, the fibers are entangled with each other, and the selective yarn Y1 and the knitted yarn Y4 are threaded together. When the entangled portion is drawn out from the yarn receiving hole 21a, the selective yarn Y1 and the knitted yarn Y4 are pulled out while pressing with the nozzle cover 24, so that the entangled portion is prevented from being broken. It becomes difficult to form into knots.

And as shown in FIG. 10F, after the selection yarn Y1 and the knitting yarn Y4 are completely drawn out from the thread accommodation hole 21a, the clamp means 22 opens, the cutter 23, and the nozzle cover 24 And the thread takeout lever 25 return to their original positions to complete the thread joining. In addition, in the case of the elastic yarn having elasticity, the yarn to be bonded is air sprayed in the clamped state (FIG. 10B), and then the yarn is entangled with each other at the same time as the yarn is cut (FIG. 10C). . In this case, even if the take-out lever 25 is stopped, the thread joint can be performed.

Subsequently, in the seventh step, the yarn selector 1 includes yarns Y2 to Y8 other than the selection yarn Y1, as shown in FIGS. 9A-1 and 9A-2. Grip). The thread pressing member 30 opens the knitting yarns Y2 to Y8, and at the same time, the suction of the thread tip holding suction 32 stops. In the eighth step, as shown in Figs. 9B-1 and 9B-2, the thread guide lever 10 is rotated to its original state (reverse rotation). Thereafter, the yarn selection plate G1 is returned to its original position, and the yarn feeding device 41 is operated while the yarn Y1 is disposed inside the separator 12, and the yarn Y1 is turned on. It is conveyed and fed to a flat knitting machine.

12 is a time chart diagram showing an operation state of the main member described above. As shown in FIG. 12, after the seal guide arm 10 rotates forward, the drive motor 50 rotates one rotation (0 ° to 360 °). By one rotation of the drive motor 50, the disc guide 20 is rotated once, and the clamp means 22, the cutter 23, the nozzle cover 24, the thread take-off lever 25, and the like are driven. And a series of operation | movement from the start of a real joint to completion is comprised.

As shown in FIG. 7, in this embodiment, first, the first engaging portion 101 engages the selection yarn Y1 at the selected position P1, and later, the second engaging portion 102 is the knitted yarn Y4. ), The knitting yarn Y4 is moved from the inside of the separator 12 to the outside.

However, as shown in each figure of FIG. 13 (it shows the state corresponding to each figure of FIG. 7), the knitting yarn (the knitting yarn in knitting) is the knitting yarn Y1, and the optional yarn (the knitting yarn to be changed) ) Is the knitting yarn Y4, the second coupling portion 102 does not engage the knitting yarn Y1, and the selective yarn Y4 engages the knitting yarn Y1 and the inside of the separator 12. Go to. That is, as shown to FIG. 13A-1 and FIG. 13A-2, when the 1st engagement part 101 rotates in the state which engaged the selection yarn Y4, the selection yarn Y4 of the separator 12 is carried out. It moves in the state which crossed over from the outside to the inside. Thereby, the knitting yarn Y1 intersects and engages with the selection yarn Y4 before the 2nd engagement part 102 engages. In this state, the yarn guide lever 10 further rotates, so that the selected yarn Y4 causes the knitted yarn Y1 to move inside the separator 12 as shown in FIGS. 13B-1 and 13B-2. Move outwards.

That is, when the selection yarn engages the first engagement portion 101 and crosses the knitting yarn, instead of the second engagement portion 102, the selection yarn engages the knitting yarn and moves to the standby position P3. On the other hand, after the selection yarn engages the first engagement portion 101 and does not intersect the knitting yarn, the second engagement portion 102 engages the knitting yarn and moves to the standby position P3.

Although the flat knitting machine has been described in the above embodiment, the thread switching device according to the present invention can also be mounted in a textile machine such as an automatic winder for joining a thread selected from a plurality of kinds of yarns.

1 is a schematic side view showing an example of a flat knitting machine equipped with a seal splicing apparatus according to the present invention.

2 is a schematic perspective view showing a specific configuration example of a thread switching device in a knitting machine or the like.

3 is a schematic perspective view showing details of main parts of a thread selection device;

4 is a schematic perspective view showing details of main parts of the seal splicing apparatus.

Fig. 5 is a view showing a seal guide lever, Fig. 5A is a schematic front view thereof, Fig. 5B is a right side view of Fig. 5A, and Fig. 5C is a sectional view taken along the line I-I of Fig. 5B.

6 to 9 are diagrams for explaining the operation steps of the actual selection, FIGS. 6A-1 and 6A-2 are front and side views showing the first step, and FIGS. 6B-1 and 6B-2 are It is a front view and a side view which show two steps.

7A-1 and 7A-2 are front and side views showing the third step, and FIGS. 7B-1 and 7B-2 are front and side views showing the fourth step.

8A-1 and 8A-2 are front and side views showing the fifth step, and FIGS. 8B-1 and 8B-2 are front and side views showing the sixth step.

9A-1 and 9A-2 are front and side views showing the seventh step, and FIGS. 9B-1 and 9B-2 are front and side views showing the eighth step.

10A to 10F are side cross-sectional views of the thread joint device for explaining the operation steps of the thread splicing apparatus.

11 is a perspective view showing a part of a device including a thread insertion rotary plate.

12 is a time chart diagram showing an operation state of the actual switching device.

FIG. 13 is an explanatory diagram illustrating another example of a state corresponding to the angle of FIG. 7. FIG.

Explanation of symbols

One; Room selector 2; Thread splicing device

10; Thread guidance lever 12; Separator

20; Disc guide 21; Splice nozzle

21a; Thread receiving hole 21b; Nozzle opening

23; Cutter means 26; Air blowing means

27; Solenoid valve 28; Suction

29; Clamp means 29A; 1st clamper

29B; Second clamper 30; Thread pressing member

31; Seal holding member 32; Thread end grip suction

33; Thread press cylinder 34; Seal cylinder

TC; Timing control means P1; Position

P2; Specific position P3; Standby position

P4; Thread joint position Y1; Optional

Y4; Organizer

Claims (3)

In the state where the two threaded ends of the threaded joint are matched in the same direction, they are accommodated in the splice nozzle and clamped, and a blowing air flow is generated in the splice nozzle before the thread cutting of the threaded ends of the two threaded threads. The air is blown to the yarn in the splice nozzle to decompose the thread end sides of the two threads to be spliced, and the blown air flow is actuated, or after acting, the thread is cut and A splicing method for yarns, characterized in that The method of claim 1, Splice method of the yarn, characterized in that the two yarns are elastic yarn. It consists of a thread joint nozzle provided with the thread accommodating hole which accommodates the two threads in the state which matched the two thread ends to which a thread joint is directed toward the same direction, The thread joint nozzle is provided with air ejecting means for ejecting compressed air from a direction intersecting with the thread receiving hole, Clamp means for holding two threads accommodated in the thread receiving hole on one side of the thread receiving hole in the thread fitting nozzle, and the two threads on the other side of the thread receiving hole in the thread fitting nozzle. And cutter means for cutting the thread end side, The air blowing means and the cutter means are provided with timing control means for injecting compressed air into the two yarns by the air blowing means before the yarn cutting of the two yarns by the cutter means. Splicing apparatus of the thread made.

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