SPOOL, YARN TWISTING PROCESS AND YARN TWISTING MACHINE

Abstract

A spool of yarn of natural, synthetic or artificial textile fibres, with the torsion value of the plied yarn (?) throughout the spool (1) being variable, and being associated with the instantaneous winding/unwinding diameter (DI) of the spool (1), equal to ? (tpm)=1/(DI*?) such that, on unwinding the yarn as twisted in a first direction N-S, the torsion value of the yarn, once unwound as twisted (?) is constant throughout the spool and is essentially equivalent to 0 tpm, and such that, on unwinding the yarn as twisted in a second direction S-N, opposite to the first direction, the torsion value of the yarn, once unwound as twisted (?), is variable throughout the spool and is equivalent to ? (tpm)=2/(DI*?). Process for the generation of the spool disclosed, and yarn twisting machine for the generation of the spool disclosed.

Claims

1. A spool of yarn of natural or artificial textile fibers characterized in that the twist value of the rolled yarn (?) along the full spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT) so that, when the yarn is scutched at de fil? in a first N-S direction, the value of the yarn twist after being scutched at de fil? (?) is constant along the full spool and is essentially equivalent to 0 tpm
? (tpm)=0 and so that, when the yarn is scutched at de fil? in a second S-N direction, opposite to the first direction, the value of the yarn twist after being scutched at de fil? (?) is variable along the full spool and is equivalent to:
? (tpm)=2/(ID(m)*TT).

2. A yarn twisting process characterized in that it comprises: Yarn twisting (H) by twisting means that apply a twist (?) associated to the winding/unwinding instant diameter (ID) of the spool itself (1); and Rolling the yarn (H) on a pickup spool (1); so that the value of the twist of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the spool itself (1) and is equivalent to:
? (tpm)=1/(ID*TT).

3. A yarn twisting machine, characterized in that it comprises a yarn (H) delivery spool (2), twisting means that apply a twist to the yarn (?), a yarn (H) pickup spool (1) with a twist value of the rolled yarn (?) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist applied to the yarn (?) in the machine twisting means so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

4. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a ring machine that comprises a yarn (H) delivery spool (2) at 0 twist that is unwound in yarn at de roul?, twisting means that apply a twist to the yarn (?) in the S direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=2/(ID*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID(m)*TT).

5. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a ring machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding a twist in Z direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a Z direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=2/(ID/1)*3.1416)?(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

6. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a ring machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding a twist in Z direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a S direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=(2/(ID/1)*3.1416)+(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

7. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a ring machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding a twist in S direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means and (?) that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a Z direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=(2/(ID/1)*3.1416)+(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

8. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a ring machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding, a twist in S direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means and (?) that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a S direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=2/(ID/1)*3.1416)?(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

9. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a 2?1 machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding a twist in Z direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a Z direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=2/(ID/1)*3.1416)?(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

10. Yarn twisting machine according to the claim 3, characterized in that the twisting machine is a 2?1 machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding, a twist in Z direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a S direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=2/(ID/1)*3.1416)+(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

11. The yarn twisting machine according to the claim 3, characterized in that the twisting machine is a 2?1 machine that comprises a delivery spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding, a twist in S direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a Z direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=(1/(ID/1)*3.1416)+(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

12. Yarn twisting machine according to the claim 3, characterized in that the twisting machine is a 2?1 machine that comprises a delivering spool (2) of yarn (H) at 0 twist that is unwound at de fil? so that when unwinding, a twist in S direction is applied to the yarn (H) with a twist value of the yarn prior to the twisting means (?) and that is equivalent to:
(?)=(1/ID2)*3.1416), twisting means that apply to the yarn (H) a twist to the yarn (?) in a S direction, a pickup spool (1) of yarn (H) with a twist value of the rolled yarn (?) means to know the instant diameter (ID2) of the delivery spool (2) means to know the instant diameter (ID) of the pickup spool (1) means to modify the twist (?) applied to the yarn in the machine twisting means so that the twist value (?) applied is equivalent to:
? (tpm)=(1/(ID/1)*3.1416)?(1/(ID2)*3.1416) so that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:
? (tpm)=1/(ID*TT).

Description

DESCRIPTION OF THE DRAWINGS

[0044] To complement the description being carried out and in order to assist to best understand the characteristics of the invention, attached to this specification, as an integral part thereof, there is drawing in which, for illustration and no limitation purpose, the following has been represented:

[0045] The figures numbers 1-A and 1B.They show both schematic elevation views of two examples of spool object of the invention being scutched in opposite directions. In the FIG. 1-A a spool can be seen where the scutched yarn at de fil? presents an essentially 0 twist (?) while in the FIG. 1-B the scutched yarn at de fil? of the same spool presents a (?) twist different from a 0.

[0046] the FIG. 2.It shows a schematic representation of a first example of the machine, in this case a ring twisting machine, with a yarn delivery spool (2) that is scutched at roul?.

[0047] the figures number 3-A and 3-B.They show both schematic representations of an example of the machine, in this case a ring twisting machine with a yarn delivery spool (2) that is scutched at de fil?. In the FIG. 3-A it can be seen that the yarn of the delivery spool (2) is unwound in a first direction provoking that the scutched yarn presents a S-direction twist while in the FIG. 3-B the scutched yarn of the delivery spool (2) presents a Z-direction twist; and

[0048] the figures number 4-A and 4-B.They show both schematic representations of another example of machine of the invention, in this case a twisting machine of the 2?1 type with a yarn delivery spool (2) that is unwound at de fil?. In the FIG. 4-A, it can be seen that the yarn is unwound in a first direction provoking that the scutched yarn presents a S-direction twist while in the FIG. 4-B the scutched yarn presents a Z-direction twist.

PREFERRED EMBODIMENT OF THE INVENTION

[0049] Seen the said figures, and according to the numerals adopted, a non-limiting example of embodiment of the invention can be seen, which comprises what is described in detail below.

[0050] Thus, as it can be seen in the said figures, a primary spool or delivery spool (2), with a multifilament yarn (H), for example, of polyamide of titer 110 Tex and without twist, is processed in a twisting machine (100) on a container that will be the holder of the spool (1) of this invention.

[0051] The fact of using the word processing implies that the twisting machine (100) is fed with the primary yarn (H) that has no twist, it twists the yarn in a given degree of twist and rotation direction (S or Z) with twisting means and the already twisted spool on the holder that, for example, is a cardboard tube having an external diameter d=75 mm, and in that the maximum diameter (D) of the spool (1) is of 200 mm.

[0052] The main characteristic of the twisting machine (100) is that the twisting value to apply in the machine ?) by the twisting means is such that the twist value of the rolled yarn (?) is variable and is associated to the wound/unwound instant diameter (ID) of the own pickup spool (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0053] For example, when starting the twisting and winding cycle, winding the already twisted yarn starts on the 75 mm cardboard tube. At this point, the twist the rolled yarn shall have been of:

alfa75=1/(0.075*3.1416)=4.24 tpm (twists per meter)

[0054] Instead, when the pickup spool (1) ends, when it achieves the maximum 200 mm diameter, the twist that the rolled yarn shall have been of:

alfa 200=1/(0.2*3.1416)=1.59 tpm (twists per meter)

[0055] As, during the twisting and winding process the pickup spool (1) is acquiring a larger diameter, the twist that the rolled yarn shall have will be different and will be within the alfa75 and the alfa200 values.

[0056] In case that the twisted yarn spool format is conical or double conical or other, it is proceeded in the same manner. That means, a (?) twist shall be applied on the machine twisting means so that the rolled yarn twist (?) value is variable and is associated to the winding/unwinding instant diameter (ID) of the own pickup spool (1) and is equivalent to:

? (tpm)=1/(ID*?)

[0057] That implies that the twisting machine (100), whichever the technology used, shall know, during the full twisting process, the instant diameter (ID) of the pickup spool (1) of twisted yarn as the said instant diameter (ID) is changing along the winding process.

[0058] According to the figures numbers 1-A and 1-B, two examples of the spool (1) object of the invention can be seen with respective types of yarn unwinding, in which it is observed how it is achieved that the rolled yarn twist (?) value along the full spool (1) is such that, when the yarn is scutched at de fil? in a first (S) direction (FIG. 1-A), the yarn twist value after it is scutched at de fil? (?) is constant along the full spool and tends to 0,

? (tpm)=0

and that, when the yarn is scutched at de fil? in a second (Z) direction (FIG. 1-B), opposite to the first direction (S), the twist value of the already scutched yarn at de fil? (?) is variable along the full scutching and equivalent to:

? (tpm)=2/(ID*IP)

[0059] According to the FIG. 2, a schematic representation of a first example of the machine (100) can be seen, concretely a ring machine with a delivery spool (2) of yarn at roul?.

[0060] In this case, the yarn (H) exiting from the delivery spool (2) of yarn having no twist (yarn twist value prior to the twisting means (?)=0), that means that scutching does not add twist. The scutched yarn of the spool (2) passes though twisting means, in this case that include guiding means (200), a ring-traveler set and rotating means (300) of the pickup spool (1) that apply to the machine a twist value to the yarn (?) meeting the following formula:

(?) tpm=2/(ID1)*3.1416), [0061] wherein: rpm of the spool (1)=(?) tpm*linear speed of the yarn (H).

[0062] According to the figures numbers 3-A and 3-B, another example of the machine (100) can be seen, concretely a ring machine with a delivery spool (2) of yarn that scutches at de fil?. The machine comprises a delivery spool (2) of yarn (H) at 0 twist, twisting means that apply to the yarn (H) a yarn twist (?), a pickup spool (1) of yarn (H) with a value of twist of the rolled and already twisted yarn (?), means to know the instant diameter (ID2) of the delivery spool (2), means to know the instant diameter (ID) of the pickup spool (1) and means to modify the twist (?) applied to the yarn in the twisting means.

[0063] In this case the yarn exiting from the yarn delivery spool (1) has a twist (?) consequently to the enwinding, the yarn twist value prior to the twisting means (?) depends on the type of the scutching direction (S or Z).

[0064] As it can be seen in the FIG. 3-A, the spool (2) scutching provokes that the scutched yarn has a Z-direction twist with a prior twist value of the twisting means (?) that is equivalent to:

(?)=(1/(ID2)*3.1416),

[0065] In this case, when the twisting means apply a twist (?) in a Z direction, the twist (?) shall be equivalent to:

? (tpm)=(2/(ID1)*3.1416)?(1/(ID2)*3.1416)

with the objective that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0066] Instead, when in this case the twisting means apply a twist (?) in the S direction, the twist (?) shall be equivalent to:

? (tpm)=(2/(ID1)*3.1416)+(1/(ID2)*3.1416) [0067] wherein: rpm of the spool (1)=? (tpm)*linear speed (m/min),
with the objective that the rolled yarn (?) twist value along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool itself (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0068] As it can be seen in the FIG. 3-B, the scutching provokes that the scutched yarn has a twist in the S direction with a twist value prior to the twisting means (?) that is equivalent to:

(?)=(1/ID2)*3.1416),

[0069] In this case, when the twisting means apply a twist (?) in the Z direction, the twist (?) shall be equivalent to:

? (tpm)=(2/ID1)*3.1416+(1/(ID2)*3.1416 [0070] wherein: rpm of the spool (1)=? (tpm)*linear speed,
with the objective that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the winding/unwinding instant diameter (ID) of the pickup spool itself (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0071] Instead, when in this case the twisting means apply a twist (?) in the S direction, the twist (?) shall be equivalent to

? (tpm)=(2/(ID1)*3.1416)?(1/(ID2)*3.1416)

[0072] Last, according to the figures number 4-A and 4-B, another example can be seen of the machine (100), concretely a 2?1 machine with a yarn delivery spool (2) at de fil?. The machine comprises a delivery spool (2) of yarn (H) at 0 twist, twisting means that apply to the yarn (H) a twist to the yarn (?), a pickup spool (1) of yarn (H) with a value of the rolled yarn (?), means to know the instant diameter (ID2) of the delivery spool (2), means to know the instant diameter (ID) of the pickup spool (1) and means to modify the twist (?) applied to the yarn in the twisting means.

[0073] In this case, the yarn (H) that exits from the yarn delivery spool (2) has a twist consequently to the scutching. The scutched yarn passes through twisting means, in this case that comprises a rotating plate; [0074] guiding means (200) and rotating means (300) of the twisting means rotating plate.

[0075] As it can be seen in the FIG. 4-A, the scutching provokes that the scutched yarn of the delivery spool (2) has a twist in the Z direction with a twisting value prior to the twisting means (?) that is equivalent to:

(?)=(1/(ID2)*3.1416),

[0076] In this case, when the twisting means apply a twist (?) in the Z direction, the twist (?) shall be equivalent to:

? (tpm)=(1/(ID)*3.1416)?(1/(ID2)*3.1416) [0077] wherein: rpm of the twisting means (300)/2=? (tpm)*yarn linear speed,
with the objective that the rolled yarn (?) twist value along the full pickup spool (1) is variable and is associated to the instant diameter of winding/unwinding (ID) of the pickup spool itself (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0078] Instead, when in this case the twisting means apply a twist (?) in the S direction, the twist (?) shall be equivalent to:

? (tpm)=(1/(ID1)*3.1416)+(1/(ID2)*3.1416)

wherein: rpm of the twisting means (300)/2=? (tpm)*yarn linear speed

[0079] with the objective that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the instant diameter of winding/unwinding (ID) of the pickup spool itself (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

As it can be seen in the FIG. 4-B, the scutching provokes that the scutched yarn has a twist in the S direction with a twist value prior to the twisting means (?) that is equivalent to:

(?)=(1/(ID2)*3.1416),

[0080] In this case, when the twisting means apply a twist (?) in the Z direction, the twist (?) shall be equivalent to:

? (tpm)=(1/(ID1)*3.1416)+(1/(ID2)*3.1416)

wherein rpm of the twisting means (300)/2=? (tpm)*yarn linear speed with the objective that the twist value of the rolled yarn (?) along the full pickup spool (1) is variable and is associated to the wound/unwound instant diameter (ID) of the pickup spool itself (1) and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0081] Instead, when in this case the twisting means apply a twist (?) in the S direction, the twist (?) shall be equivalent to:

? (tpm)=(1/(ID1)*3.1416)?(1/ID2)*3.1416) [0082] wherein: rpm of the twisting means (300)/2=? (tpm)*linear speed.

[0083] There exist different technologies to obtain the value of the instant diameter of a spool along the full process, such as an ultrasound sensor that is correctly oriented in order it provides an analog signal associated at a distance of a programmable automat or PLC and that this later through and with programming means calculates the said instant diameter. It is also possible to know the instant diameter of a spool by knowing the yarn speed, the yarn characteristics and the geometry of the spool rolling.

[0084] It is not thought necessary to go into detail of which is the manner of how these textiles machines twist although, preferably, this invention is focused in that the said machines are characterized in that by knowing the instant diameter of the spool during the full cycle of twisting and through programming means, they can apply a real twist to the wound yarn that is variable such that the value of the twist of the rolled yarn (?) along the full pickup spool (1) is variable, is associated to the winding/unwinding instant diameter (ID) of the pickup spool (1) itself and is equivalent to:

? (tpm)=1/(ID(m)*?)

[0085] Finally, to obtain a real twist (?) in the pickup spool (1) a twist (?) is to be programmed in the twisting machine and, according to the operating principle of the machine as well if it is a ring type or a double twist (2?1), each machine will act in its moving parts as it is convenient:

[0086] For ring twisting machines:

RPM spool (1)=(?)*yarn linear speed

[0087] For double twist or 2?1 twisting machines: RPM twisting means (300)/2=(?)*yarn linear speed.

[0088] When we speak about zero twist value that means that the twist objective is zero tpm although the tolerances have to be taken into account as well as measuring the ID, ID2 diameters and the accurateness of the movements shall always be such that they are always seeking the said objective, therefore there is to be a margin around the 0 tpm value that is preferably of +8/?8 tpm in which it is considered protected by the said present invention, even margins of +1/?1 tpm or +2/?2 tpm, +3/?3 tpm.

[0089] The nature of this invention being sufficiently described, as well as the manner to implement it, it is not deemed necessary to extend any longer its explanation for any skilled person of the art to understand its extent and advantages arising from it.