JPH0428617B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a splicing device for mechanically disassembling and recomposing yarns.

More precisely, the present invention relates to a splicing device capable of mechanically untwisting two yarns at the end of the yarn to be spliced, aligning them, and then retwisting them.

Preferably, such a splicing device can include suitable devices for promoting the interpenetration of the fibers that substantially constitute the yarn during the retwisting of the yarn ends.

Patent application in the name of Osiro filed for European Patent Application on May 5, 1981 ``Method and Apparatus for Splicing of Two Twisted Fiber Yarns''
is known and priority is claimed based on Provisional Patent Application Specification No. PE3407 filed in Australia.

The present invention constitutes an improvement and development of the technology presented in the aforementioned patent application.

This patent application discloses a method for piecing comprising disc means, hereinafter also referred to as "discs", facing each other, rotating in mutually opposite directions and capable of mutual axial movement. ing. This disc means tightens each thread at diametrically spaced points to form a particular thread end of the thread itself. These threads include
In order to obtain approximately parallel fibers and to impart a pinching effect to the yarns for the purpose of forming the ends in each yarn, and also to retwist the yarns drawn in alternating contact. , the yarn ends are untwisted simultaneously. The fibers of the yarn ends are then retwisted together to form a splice of two yarns.

Several inventions exist in the prior art that attempt to obtain knots between yarns to be spliced by parallel alignment of fibers.

The various processing technology concepts of these known inventions use jets of air, electric current or electrostatic charges, and other systems.

Two inventions of particular interest are U.S. Pat.
Examples include No. 3903680 and No. 2515172.

U.S. Pat. No. 3,903,680 discloses that if a yarn is subjected to an untwisting action and the untwisted fibers of the two yarns are in an intertwined state, then the two It confirms the principle that after carrying out the re-twisting of the yarns, it is possible to obtain a single yarn containing splices that actually has the same properties, cross-section and mechanical properties as the original yarn.

To put this principle into practice, according to the above-mentioned US patent, each yarn to be spliced is tightened at two separate points forming the yarn ends of a particular yarn.

Each yarn is untwisted at the yarn ends, the fibers are untwisted and separated, and the fibers are spaced apart to form two separate yarn ends of the yarn with the fibers unraveled at the ends of the yarn.

The unraveled fibers of one end of the thread are separated from each other to allow the insertion of the other unraveled thread end into the first end.

The fibers of the second yarn end are then also separated to facilitate interlacing of the fibers belonging to the two yarns.

Finally, according to this patent, an axial twisting action is again applied to at least a portion of the fibers thus interlaced, thereby retwisting the fibers of the two yarns together. A spliced portion is formed.

In a preferred embodiment for carrying out the method described above, the length of the thread ends of the two threads is substantially the same as the length of the fibers constituting the two threads, and the thread insertion This then requires that the thread itself be tightened at points spaced apart by the same distance as the fiber length.

In still other embodiments, during a combing operation that unwinds the fibers and aligns them in a mutually parallel configuration, the fibers of one end of the thread are separated before the end of the other thread is inserted. In order to do this, we teach the application of electrostatic forces.

U.S. Pat. No. 2,515,172 discloses that when forming a yarn splice, after untwisting the yarn end and pulling out this end,
The need to retwist them together is confirmed.

This U.S. patent requires that the length of the untwisted yarn end is greater than the average or maximum length of the fibers, and that the twisting occurs in the untwisted yarn cords in the vicinity of the portion of the yarn that has not undergone the untwisting operation. It teaches that it is desirable to restore the

Preferably, the yarns to be spliced are superimposed on each other in substantially diametrically opposed directions, and the untwisted portions are pulled out and retwisted together at the same time.

According to the description in this patent, the primary purpose of the drawing operation is to align the fibers of the two threads into a generally aligned nurturing body to enhance mutual bonding.

According to this US patent, the fact that the drawing and twisting steps are carried out simultaneously increases the bond and therefore the strength of the splice.

Finally, this US patent mentions that the twist preserved in the remainder of the yarn can be restored in the region of the splice, thereby making it possible to restore the twist.

Such restoration of the twist will result in a return to the original twist of the yarn relative to the splice, provided that the length of the splice after the pulling operation is approximately twice the length of the affected end of the yarn. Gives the same or similar twist density.

In this US patent, there is no mention in the text or claims of an air jet device for implementing this technique.

The first problem commonly found in this type of approach is that in most cases it is not possible to completely unravel the thread before stripping off the excess thread end and forming the remaining thread end. This is because the twist densities of normal yarns vary greatly between different yarns or even in the same single yarn, with the average value of the twist density in between.

This problem results in improper yarn end geometry, resulting in weak and/or thick joints.

The second problem relates to the difficulty in controlling and processing the formed yarn ends in order to ensure proper and sufficient intertwining of the fibers.
It also relates to the re-twisting necessary to form a reliable splice.

Although the first of the above-mentioned US patents proposes electrostatically charging the fibers at the yarn ends, which could theoretically overcome the second problem,
In practice, another problem arises with respect to the addition of a charge to the fibers at the ends of the yarn, which carry only a small charge, leading to difficulties in handling these ends.

The above-mentioned problems are substantially overcome by the splicing device proposed by the present invention, which utilizes the properties of the yarn and the adoption of an untwisting means that produces a frictional untwisting effect. This property is due to the fact that the diameter of the thread is approximately inversely proportional to the twist density of the thread.

Another problem with the control of residual yarn ends is overcome primarily by forming the yarn ends in contact with each other and tightening both ends of each yarn end before the retwisting process of the aligned yarns. be done.

The device of the European patent application cited above introduces a number of undesirable attributes, chief among them being the following problems:

The operating cycle is relatively long due to the clear separation between the various steps of the operating cycle.

Since the pressure between the disc devices is constant, it does not allow adjustment to suit the requirements of the thread type. Furthermore, this constant pressure must logically be set at a maximum or near maximum value for the untwisting and retwisting processes, so that the tapering condition is maintained during the tearing process of the excess yarn ends. The thread end cannot be obtained.

Each device is operated by its own means and therefore suffers from unreliability, cumbersome maintenance, relatively difficult timing and setup, and large overall size.

The device of the invention is provided with untwisting-retwisting means and means for removing excess yarn ends, all of which ensure accurate and uniform splicing by mechanical unraveling and reshaping. This effect can be improved, and perhaps at the same time, by further additional means such as nozzles, central agitators, mixers, turbulence chambers, etc.

The present invention offers many advantages, among which the following are the main advantages over the device of the European patent application mentioned above.

The steps of the working cycle are continuous and overlapping, which leads to a shortening of the execution time of the working cycle and improves the interpenetration of the fibers belonging to the two threads.

Since the disc pressure can be varied as required, the pressure can be varied according to specific requirements and can be varied for each type of yarn or for each critical process, thereby improving the quality of the yarn. A desired state can be temporarily obtained for processing.

Also, since there is only one actuator to be adjusted, timing and setting are easy to implement, little maintenance is required, and overall size is reduced.

An adjustable type of device for controlling the rotation of the discs may be provided, which can provide the best conditions for each type of thread.

Auxiliary unraveling means are also taught to ensure complete entanglement and interpenetration of the fibers.

In this case, even if, for example, the yarns to be spliced cannot be completely untwisted, the means for interpenetrating and intertwining the fibers of the present invention always ensures that the fibers are interwoven with each other, so that the splicing can be carried out. A further advantage arises from the fact that it is possible to set a constant amount of rotational movement of the untwisting-retwisting disc in either direction, regardless of the type of yarn to be used.

According to the invention, the auxiliary loosening means are:
The fibers are made substantially parallel between the counter-rotating disks and substantially act on the fibers of the yarn to be spliced during the yarn alignment process.

Said step takes place substantially during the transition from the untwisting step to the retwisting step, in which the counter-rotating disks are substantially instantaneously stopped.

Therefore, the present invention is embodied by a splicing device that mechanically unravels and reshapes yarn,
The splicing device includes opposed disk means for mechanically untwisting and retwisting two yarns disposed therebetween, and means for removing excess yarn ends protruding from the disk means, Furthermore, means for setting the disk means in a rotating state is provided, and means for activating the means for removing the excess yarn end portion is also provided, and the yarn splicing device of the present invention is characterized by the following configuration. It is something. o means for imparting a variable elastic thrust which may be temporarily created between said disc means; o adjustable means for controlling the rotation of said disc means; and o cooperating with a single programmed actuation means. actuating means for actuating said adjustable means to bring said disk means into rotation and for actuating said means for applying an elastic thrust to produce a variable elastic thrust; and in this case, the yarn to be spliced; Means for positioning and auxiliary means are advantageously provided.

The present invention will be better understood from the preferred embodiments of the invention given by way of example.

In the drawings, identical parts or parts having the same function are provided with the same reference numerals.

According to one embodiment of the invention (FIG. 1), the device consists of two facing and opposed disks, each of which has a ring 21, 121 of a material having a suitable coefficient of friction attached thereto. lined on the inside surface of the

A gear 22,122 is fixed to each disk 20,120 and serves to actuate the disks 20,120.

Pins 23, 123 are fixed to the disks 20, 120, one of which 123 can rotate on its own axis in the support 124 but is prevented from moving by the stripper 25.

The pin 23 can also rotate on its own axis in the support 24 and can slide along its own axis in the support 24.

One or both of the pins 23, 123 may direct fluid under pressure or containing additives to the rings 21, 123.
It can be perforated axially to allow passage into the chamber within 121 and possibly to actuate mechanisms within said disc.

Said fluid may cooperate with means capable of promoting mutual entanglement and cooperation of the fibers of the two threads 46, 146.

In the illustrated embodiment, the means 50 for generating a variable elastic thrust cooperate with the disk 20 and are able to determine the temporary mutual position of the disks 20, 120 in the required manner.

In this example, the thrust means 50 includes a spring 2
6, a lever 27, and special cam means 32, 132 built into the drum 33.

A small ring 25 is fixed on the pin 23 and a tensioned spring 26 is arranged between the disc 20 and a fork-like lever 27 acting on the small ring 25.

This lever 27 can be rotated at a pivot point 28 . The spring 126 guided by the shaft 29 and the projection 129 on the lever 27
7.

The spring 126 produces a reaction against the stationary wall 30 and pushes the lever 27 in the direction of closing the disc 20 relative to the disc 120.

Lever 27 fixedly supports a small roller 31 in a substantially stationary position, and
cooperates with cam 32 on drum 33.

Said drum 33 is fixed to an axle 34 and can rotate about its own axis but cannot move laterally, and is supported, possibly in a cantilevered manner, by a support 224.

Although the drum 33 is preferably operated to rotate, it does not necessarily need to rotate once for each splicing operation.

The lever 27 supports a small roller 131 fixed in a position which is preferably adjustable;
This roller 131 is inserted into a cam 132 on the drum 33. The position of the small roller 131 can be adjusted by means of a suitable device 35.

The movement of the lever 27 is, for example, conditioned in this example by an eccentric means 36 cooperating with one edge of the lever 27 itself, which eccentric means can rotate about an axis 37 and 360° rotation can be fixed anywhere as required.

In the illustrated configuration, an adjusting means 51 for controlling the rotational state of the disks 20, 120 is shown at one end of the drum 33. In the embodiment of FIG.
It consists of a sliding means 43 provided with 44.

At one end, the drum 33 supports crank and notch link means 38 with adjustable sliding means 39. The sliding means 39 can be locked to the fins 40, for example by means of suitable screws.

The sliding means 39 have a pin 41 that engages in a notch 42 formed in the sliding device 43 guided by the means 143.

The sliding device 43 supports two racks 44, 144 which mesh with the gears 122, 22, respectively, and serve to impart rotational movement in the reaction direction to the disks 120, 20, respectively.

The positioning means 45, 145 is the disk 20, 1
These positioning means 45, 145 are preferably provided above and below 20 (FIG. 3) and can be movable or stationary.
positions the threads 46, 146 relative to each other and relative to the disks 20, 120 so that the threads 46, 146 assume the diametrical position shown. This makes it possible to prevent the yarn from being displaced from its diametrical position during untwisting.

If the positioning means 45, 145 are movable, these means can be moved in conjunction with the sliding device 43.

As previously mentioned, threads 46, 146 engage positioning means 45, 145, respectively.

The threads 46, 146 are each connected to a thread package 47.
and is supplied from the bobbin 48.

Suitable gripping and tearing means 49, 149 are also used for thread 4.
We are collaborating with 6,146. The gripping/tearing/cutting means 49, 149 and the positioning means 45, 145 are the disks 20, 120 and the threads 146, 4, respectively.
Tighten the thread 46, 146 against 6 itself to set it in place.

The positioning of the threads 46, 146 is also carried out in a known manner by means of devices which are not shown in the text as they are not the subject matter of the invention and do not fall within the scope of the invention.

Gripping and tearing means 4 that pinches and tears the excess thread end
The movement of 9,149 can be obtained, for example, by a cam on the drum 33 or on the periphery of the crank and notched linkage means 38.

The gripping and tearing means 49, 149 may be, for example, a stationary element and a movable element, whereby the movable element is actuatable by thrust means (not shown);
This means and the gripping and tearing means 49, 149 cooperate in one or more positions during their movement.

For this reason, for example, the gripping and tearing means 49, 149
remains closed only at the thread end intermediate between a fully forward position and a fully rearward position, the two positions being defined by said thrust means.

The gripping and tearing means 49, 149 also hold the thread 4 in order to facilitate the operation of removing excess thread ends.
6,146 may also be imparted with longitudinal movement, eg, away from the disks 20,120.

Removal of the thread ends can be carried out by a pinch and tear operation, or by a cutting operation, or alternatively by a pinch, tear and cut operation.

If this removal operation is carried out by a picking and tearing operation, this is preferably done when the yarn is untwisted, but if this operation is carried out by cutting, the yarn 46, This can be done at some convenient time before 146 is aligned.

FIG. 4 shows certain gripping and tearing means 249 which are moved laterally away, for example by action by cam means 232 formed on or cooperating with the drum 33.

The disks 20, 120 can be set to rotate by the transmission action of bevel gears or other equivalent transmission means.

To this end, said gear wheel can also be set to rotate a cam 32 which acts to cause an axial movement of the discs 20, 120 towards or away from each other. This movement can be accomplished by gear, belt, crank, or other means of transmission.

The outline of the operating cycle is as follows. Initially, the threads 46, 146 are placed between the disks 20, 120 according to the configuration of FIG.

When the splicing cycle starts, disk 2
0,120 is closed, so that by the action of the cam 32 cooperating with the small roller 31 of the lever 27,
thread 46 installed between the disks 20, 120;
146 in place.

Furthermore, in this position, the disk 20,1
20 is being rotated in a direction that untwists the fibers forming the yarn 46, 146 itself.

Adjustments for Z-twisting or S-twisting the yarn are as follows:
For example, the racks 44, 144 may be moved so that rack 44 cooperates with gear 22 and rack 144 cooperates with gear 122 (see FIG. 1) such that rack 44 is moved to the left and rack 144 is moved to the right. This can be done by setting in advance.

The speed and characteristics of the rotational movement of the discs 20, 120 are determined by the position of the slide device 39 relative to the crank and the notched linkage means 38.

Fork-shaped lever 2 on disk 20, 120
The pressure given by 7 is the maximum possible for the thread in question.

Once the untwisting has ended, the pressure exerted by the lever 27 is reduced to the required amount by the action of a small roller 131 which is adjustable by means 35 and cooperates with a cam 132. The direction of rotation is still the direction of untwisting. Grasping and tearing means 49, 149
are the threads 46 protruding from the disks 20, 120,
Begin the process of picking and/or tearing the ends of 146.

Desirably, the discs 20, 120 are stopped and their pressure is relaxed to assist in removing the excess yarn end.

Thereafter, the rotation of the disks 20, 120 is reversed and the pressing action is again strengthened. disk 2
When the rotation of 0,120 is reversed, the thread 46,14
6 is retwisted, one yarn is retwisted together with the other yarn.

The alignment in the re-twisting process is for yarns 46, 146
is carried out without being held any longer by the gripping and tearing means 49, 149.

The pulling and retwisting of the threads makes the remaining threads different from the rest of the threads because the picking and tearing operations considered effective in the present invention provide the remaining thread ends that are gradually tapered. resulting in a homogeneous edge.

At the end of the re-twisting process, the disk 20,1
20 is stopped and moved apart, thereby freeing the completed splice.

According to the present invention, a crossing condition of the threads 46, 146 is desirable, since the threads are connected to the discs 20, 120.
This is because the yarn passes through the center of rotation of the disk, so that the yarn is arranged along the diameter direction of the disk, and therefore, untwisting does not cause displacement of the yarn itself.

Furthermore, due to the presence of the positioning means 45, 145 and the gripping/tearing means 49, 149, the threads 46, 14
Perfect symmetry of intersecting states of 6 and threads 46, 146
to ensure proper diametrical positional relationship of the disks 20, 120.

Furthermore, the crank and the notched link means 3
8 or other similar adjustable means makes it possible to adapt the rotational movement of the disks 20, 120 to the requirements determined by the type of yarn to be spliced.

In fact, the crank and the notched link means 38
is from zero when the pin 41 is on the axis 34 of the drum 33 to the crank and the notched link means 3.
8 itself makes it possible to have a variable rotation up to the maximum possible value.

This adjustment range allows the splicing device to be adjusted to suit different types of yarn.

According to a modification (FIG. 5), the splicing device rotates the discs 20 and 20 with a preset amount of rotation depending on the count and type of yarn 46, 146 to be spliced.
It consists of two concentric opposed disks 20, 120 which can be set to rotate in mutually opposite directions by suitable means (not shown in FIG. 5) for producing rotation of the thread 120. 46,14
The free ends of 6 are positioned and tightened by schematically illustrated gripping and tearing means 349, each located on one side of the disks 20,120.

The disk is supported by a support 24 which includes suitable bearings, not shown.

At least one of the disks, in this embodiment disk 120, is axially movable towards the other by suitable means not shown, and each disk 20, 120 has an annular concentric inner chamber 52. , 152 are provided.

Therefore, the yarns 46, 146 to be spliced can be tightened at two diametrically opposite points between the peripheral edges 53, 153 formed around the inner chambers 52, 152 of the discs 20, 120. It becomes possible.

In order to form a splicing part, the disk 20,1
20 are first pressed together, which causes the thread 4
6,146 are tightened between them, and these disks are then used to untwist the fibers at the yarn ends formed therebetween to align the two yarns.
At the same time, they are rotated in opposite directions. These discs are arranged opposite to the direction of rotation during untwisting in order to retwist the fibers of the yarn together after the excess yarn ends have been removed by the gripping and tearing means 349 at the end of the aforementioned untwisting operation. rotated in the direction of

According to this illustrated variant, means 54 are provided for creating an interdigitated state of the fibers;
The splicing operation substantially and effectively occurs during the passage of the fiber from the untwisting stage to the retwisting stage, or alternatively,
The action can be carried out during the retwisting process or part thereof.

Said means 54 have the purpose of improving the interpenetration of the fibers of one yarn 46 with respect to the other yarn 146, and also of increasing the magnitude of the retwisting movement in the opposite direction caused by the untwisting process. In order to produce a reliable splicing without having to apply a rotational amount to the disks 20, 120,
It has the purpose of allowing the fibers to interact with each other.

In its simplest form, the means 54 for causing the fibers to interpenetrate each other includes a shaft portion 154 disposed concentrically inside one of the disks 20, 120, in this embodiment inside the movable disk 120. The support shaft 22 of the disk 120
0 has a center hole 320 drilled therein.

This shaft 154 can be moved axially with suitable displacement devices of known type and is therefore not shown in this embodiment.

At its inner end, the shank 154 is arranged so as to improve the interpenetration of the fibers when the fibers of the yarn are substantially parallel and in contact with each other.
It includes means 254 that can act on the fibers of the book thread to intertwine the fibers.

In the embodiment of FIGS. 5 and 6, said intertwining means 254 are formed of needles 55 which are fitted into two scissor-like arms 56 which are pivotally connected to the inner end of the shank 154. Consisting of a pair of brushes, two scissor-like arms 56 are held open by springs 57 disposed between opposite ends of the arms 56.

Needle-shaped brush 55 for untwisted fibers
The closure of is caused by a contoured cam 58,
In the present embodiment, this cam 58 is arranged on the stationary disk 20, with needle-like brushes 58 in a forward working position on either side of the threads 46, 146.
5 acts on these brushes to bring them into a closed state, which also results in the constriction 420 shown in the diameter of hole 320 in FIG.
It can also be obtained by, in this case, the narrowing part 4
20 attempts to bring together the inner parts of the scissor-shaped arms 56.

FIGS. 7 and 8 show another variant of the invention, in which means 54 for creating a fiber entrapment condition are shown.
consists of a swinging disk 59 fitted to the inner end of the shaft 154, the disk 59 having a shaft 15
Nozzle means or nozzles 159 are provided, such as a plurality of small substantially axial holes 259 communicating with axial conduits 359 machined in 4.

The axial conduit 359 has air, steam, water, etc. injected at one end by a hose or other means against the untwisted fibers of the yarn 46,146.
Connected to a source of oil or other fixing fluid.

Although not shown, the support disk 60 is preferably acted upon by a shaft 154 and is pressed against the threads 46, 146 and is preferably fitted concentrically within the annular chamber 52 of the stationary disk 20. The disk 59 is provided with other actuating means that can quickly swing the disk 59 while it is stationary.

When the disk 59 is being rocked rapidly,
At the same time, a fluid flow is provided through the small holes 259 to improve the interpenetration of the fibers and to fix the twist that will subsequently be imparted to the fibers.

The disk 59 can also be lined with a material (not shown) capable of producing sufficient friction against the threads, or a similar coating or lining of friction producing material can be provided on the facing support disk 60. You can also do that.

Alternatively, it is also possible to consider both the nozzle means 159 and the said material producing co-operating friction on the disc 59.

A further implementation of the embodiment described herein and shown in FIGS. 5 and 6 is to replace the two needle-shaped brushes 55 by two pads 61 that are visible from the front in the working position of FIG. 9.

The pad 61 has a complementary corrugated surface 1 on its inside.
61 and untwisted yarn 46 between the surfaces,
146 is stretched without being pressed. According to this modification, the pads 61 are held in this position during the entire retwisting process.

In fact, when the fibers of the yarn 46, 146 to be retwisted are forced to maintain a longitudinal winding condition and to wrap around each other;
It has been found that these fibers improve interpenetration and provide a greater degree of strength in the splice.

Although several embodiments of the invention have been described above, merely by way of non-limiting example, other embodiments and modifications will occur to those skilled in the art without departing from the scope of the invention.

It is possible to change the shape, dimensions and specifications, to provide different working and processing devices, and to combine the embodiments described above with possible improvements, all of which are covered by this document. It is within the scope of the invention.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of the yarn splicing device of the present invention accompanied by a mechanical drive device, FIG. 2 is a diagram showing a part of the untwisting-retwisting device of the present invention, and FIG. FIG. 4 shows a possible device for removing excess yarn ends; FIG. FIG. 6 is a cross-sectional view of the device shown in FIG. 5; FIG. 7 is a diagram showing still another embodiment of the yarn splicing device of the present invention; FIG. The figure is number 7
FIG. 9 is a cross-sectional view of the device shown in the figure, and FIG. 9 is a diagram showing another embodiment of the device for causing fiber entanglement. 20,120...Disk, 21,121...
Ring, 22...Gear, 23...Pin, 24...
Support part, 25... stopper, 26... spring means,
27... Lever, 28... Pivot joint, 29, 34,
37... shaft, 30... stationary wall surface, 31... roller, 32... cam device, 33... drum, 38...
...Crank and notched ring means, 39...Sliding means, 40...Fin, 41...Pin, 42...
...cut, 43...sliding device, 44...rack,
45,145...positioning means, 46,146...
...Thread, 47...Package, 48...Bobbin, 4
9,149...Gripping/tearing means, 50...Thrusting means, 51...Adjusting means, 52,152...Annular chamber, 53...Peripheral portion, 54...Means for causing an intrusion state, 55... Needle-shaped brush, 56
... scissor-like arm, 57 ... spring, 58 ... cam,
59...Disk, 60...Support disk, 61
... Pad, 154 ... Shaft, 161 ... Inner surface, 320 ... Center hole, 359 ... Conduit.

Claims (1)

[Claims] 1. Facing disks 2 for mechanically untwisting and retwisting two yarns 46, 146 disposed therebetween;
0,120; means 49, 149 for removing excess yarn ends protruding from the disks 20, 120; means for rotating the disks 20, 120; and means 49 for removing excess yarn ends. 149
A splicing device for unraveling and reshaping yarn comprising: means 50 for applying a variable elastic thrust temporarily formed between said discs 20, 120; , 120; and in cooperation with a single actuating means 33, actuating said adjustable means 51 to adjust the rotational state of said disks 20, 120.
and actuating means 32, 50, 51 for rotating and activating the variable elastic thrust applying means 50 to generate a variable elastic thrust, further positioning the two threads 46, 146. A yarn splicing device characterized in that it comprises means 45,145. 2 The means 50 for applying the elastic thrust is the spring 2
6 and a lever 27 cooperating with at least one disc 20, said lever 27 cooperating with at least one cam means 32. 3. The means 36 for conditioning the movement of the lever 27 is
The yarn splicing device according to claim 1 or 2, characterized in that it is provided so as to cooperate with the lever 27. 4. Any one of claims 1 to 3, characterized in that the means 51 capable of adjusting the rotational state of the disks 20, 120 includes at least means 38, 39 for adjusting the rotational momentum. The yarn splicing device according to item 1. 5. Any one of claims 1 to 3, characterized in that the means 51 capable of adjusting the rotational state of the disks 20, 120 includes at least means 38, 39 for adjusting the rotational speed. The yarn splicing device according to item 1. 6. The means 38, 39 for adjusting the rotational speed are
Claim 1 characterized in that it is a means for producing preferably a crank-like mechanical movement.
The yarn splicing device according to any one of Items 1, 4, and 5. 7. The actuating means 32, 50, 51 cooperate at least partially with a single programmable actuating means 33, which is preferably a drum. The yarn splicing device according to any one of the items. 8 means 45 for positioning said thread 46, 146;
145 is positioned such that the yarns 46, 146 to be spliced are crossed with each other as necessary, and this crossing point is located near the axis of the rotational movement of the disks 20, 120. The yarn splicing device according to any one of Items 1 to 7. 9. Disks 20, 12 rotatable in opposite directions to act on the fibers of the untwisted yarn 46, 146.
Means 54 for creating an intermeshed state of the fibers of the untwisted yarns 46, 146 by means 254 for entangling the fibers, which can be inserted between the
, the means 54 cooperating with the oppositely rotatable disks 20,120, and the means 254 for entangling the fibers in the space 52,152 between said oppositely rotatable disks 20,120. 9. A splicing device according to claim 1, characterized in that it is provided with suitable displacement means and possible actuation means. 10 The means 54 for causing the fibers to interpenetrate each other is formed concentrically in at least one of the oppositely rotatable disks 20, 120 and is located inside each oppositely rotatable disk 20, 120. Annular chamber 5 formed on the surface
10. The splicing device according to claim 9, wherein the splicing device is disposed in a hole 320 that communicates with the yarn splicing device No. 2,152. 11 The means 54 for causing the fibers to interpenetrate are slidable and close to the holes 320
The shank 154 is provided with a shank 154 supporting fiber entanglement means 254 at its inner end partially disposed within and projecting into the annular chamber 152 of said oppositely rotatable disk 120.
Claim 9, characterized in that the other end of 54 is connected to suitable axial displacement means.
The yarn splicing device according to item 1 or item 10. 12 The fiber entangling means 254 consist of a pair of brushes formed with needles 55 and fitted on the ends of two scissor-like arms, which scissor-like arms are pivotally attached to the inner end of the shaft 154. worn,
Further, the scissor-shaped arm 56 is held in a spaced apart state by a spring 57 disposed between opposite ends thereof, thereby forming a means for operating the needle-shaped brush 55. A yarn splicing device according to any one of claims 9 to 11. 13. Said means for actuating said needle-shaped brush 55 are arranged on at least one counter-rotatable disk 20 opposite a counter-rotatable disk 120 containing the needle-shaped brush 55 in an annular chamber. It consists of a cam 58 having a contour, which cam 58 is connected to the needle-shaped brush 55.
Claim 1 characterized in that it cooperates with
Yarn splicing device according to item 2. 14 The means for actuating the needle-shaped brush 55 includes a diametrical constriction 420 at the end of the hole 320, the constriction being a scissor-shaped arm supporting the needle-shaped brush 55 at its end. 13. The splicing device according to claim 12, characterized in that it acts on the inner end of the yarn splicing device 56. 15 The fiber entangling means 254 comprises a pair of pads 61 having complementary undulating inner surfaces 161 and fitted onto the ends of the two scissor arms 56.
, the scissor-like arm is pivotally attached to the inner end of the shaft 154, and the scissor-like arm 5
actuating means consisting of a constriction 420 diametrically at the end of said bore 320 held apart by a spring 57 disposed between opposite ends of said bore 320; Acting on the inner end of the scissor-like arm 56 supporting the pad 61, it maintains the surfaces 161 of the two pads in a substantially spaced apart working position. The yarn piecing device according to any one of Item 11. 16 The means 254 for intertwining the fibers consists of a disc 59 fitted to the inner end of the axially movable shaft 154, which disc 59 has a conduit in the axially movable shaft 154. 359 is provided, the nozzle 159 communicating with the inner conduit 3
59 is connected to a suitable fluid supply source, and the shaft 154 is connected to actuating means for rapidly rocking the disk 59. The yarn splicing device according to any one of the above. 17. The fiber entangling means 254 consist of a swingable disc 59 arranged at the inner end of the axially movable shaft 154, said disc 59 being made of a material capable of producing sufficient friction against the threads. The inner surface of the oppositely rotatable disk 60 having a layer on its inner surface can be provided with another layer of material capable of producing sufficient friction against the yarn, and furthermore said disk 59 is actuated in a rapid oscillating movement by suitable means capable of acting on the outer end of the shaft 154. The yarn splicing device described in .