TMT Machinery Patente

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The time and labor required for teaching for a yarn threading robot are reduced. A spun yarn take-up system 1 includes: a take-up unit 3; a yarn threading robot 4 which includes a yarn threading arm 32 and is configured to perform yarn threading to the take-up unit 3 by using the yarn threading arm 32; a yarn threading storage unit 102a which is able to store information regarding coordinates of points P to which a predetermined part (TCP) of the yarn threading arm 32 is moved in a predetermined order when the yarn threading is performed; and a yarn threading controller 102 which is configured to cause the yarn threading robot 4 to perform the yarn threading based on the information regarding the coordinates of the points P. When the points P are grouped into predetermined groups, the yarn threading controller 102 acquires coordinates of a specific point based on a result of teaching regarding the yarn threading, each of the predetermined groups including at least one specific point, and the yarn threading controller 102 acquires coordinates of a relative point which is different from the at least one specific point, based on predetermined relative coordinates relative to the coordinates of the specific point belonging to the same group as the relative point.

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An object of the present invention is to determine whether the quality of a yarn is stable, without needing human workforce. A yarn spinning system includes a spinning apparatus 2 and a first control unit (controller 5). The spinning apparatus 2 includes a spinning pack 16 having a spinneret 17 configured to discharge molten polymer which is a material of a yarn Y, and an information detection unit 60 arranged to be able to detect information regarding the quality of the yarn Y spun out from the spinneret 17. The controller 5 is programmed to acquire a predetermined determination parameter based on a detection result by the information detection unit 60 and to perform, with use of the determination parameter, quality determination of whether the quality of the yarn Y is stable.

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A synthetic yarn splicer 1 includes: a yarn splicing portion 10 that includes a chamber 14 which forms a space through which a first yarn Y1 and a second yarn Y2 are insertable and an injection hole 16a which injects air; and a first clamping mechanism 20 and a second clamping mechanism 30 that are provided at a position interposing the chamber 14 of the yarn splicing portion 10 and hold each of the first yarn Y1 and the second yarn Y2 inserted through the space, in which a cross-sectional shape of the chamber 14 formed on a plane orthogonal to a penetration direction of the chamber 14 is a circular shape, and in which a first line passing through a center C of the chamber 14 and connecting an inner peripheral surface 14a of the chamber 14 and a second line passing through the center C of the chamber 14, connecting the inner peripheral surface 14a of the chamber 14, and orthogonal to the first line are equal to or larger than 4.0 mm and equal to or smaller than 7.0 mm.

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To provide a coupling device suitable for arrangement in a pipe connected to a yarn sucking device and capable of coupling paired couplers if axes of the couplers are not parallel to each other. A first coupler 83 includes a first cylinder body 91. A second coupler 84 includes a second cylinder body 92 facing the first cylinder body 91, a cylindrical ring member 93 engaged on an outer side of the second cylinder body 92 with a gap, and movable in an axial direction of the second cylinder body 92, a seal ring 95 arranged between the second cylinder body 92 and the ring member 93, and a bias mechanism 96 biasing the ring member 93 toward the first cylinder body 91. A ring member 94 is provided on an end face of the first cylinder body 91. One coupler 84 is moved toward the other coupler 83, and an end face of the ring member 93 contacts the end face of the first cylinder body 91 via the sealing member 94, whereby an inner passage of the first cylinder body 91 is brought into communication with an inner passage of the second cylinder body 92.

Both uniformization of temperature distribution on the roller surface in the axial direction and effective heating of the roller surface are achieved. In an induction heating roller 30 including: a coil 32; a roller main body 31 having an outer cylindrical part 33 which is cylindrical in shape and is provided on an outer side in a radiation direction of the coil 32; and a heat leveling member 36 provided on the outer side in the radial direction of the coil 32 and on an inner side in the radial direction of the outer cylindrical part 33 and being in contact with an inner circumferential surface of the outer cylindrical part 33, heat conductivity of the heat leveling member 36 is higher than heat conductivity of the outer cylindrical part 33 in an axial direction, and electric resistivity of the heat leveling member 36 is higher than electric resistivity of the outer cylindrical part 33 in a circumferential direction.

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A synthetic yarn splicer 1 includes a yarn splicing portion 10, a first clamping mechanism 20, and a second clamping mechanism 30, in which the first clamping mechanism 20 and the second clamping mechanism 30 clamp a first yarn Y1 and a second yarn Y2 so that a line L connecting a pair of clamping positions CP1 and CP2 of the first yarn Y1 and the second yarn Y2 is located in an area A of a chamber 14 and the area A is an area which is located at the side opposite to a slit 13 with respect to a first line L1 and is located at the side opposite to an injection hole 16a with respect to a second line L2 following a first direction Y and passing through a center C.