A cable coiling system for coiling a cable into a cable coil includes a reel rotatable around a central axis of the reel, a gripper configured to grip a starting end of the cable, and a slide rail extending in a direction perpendicular to the central axis of the reel. The cable is coilable around the reel to form the cable coil by rotating the reel in a state in which the gripper is coupled onto the reel and grips the starting end of the cable. The reel is slidably mounted on the slide rail. A length of the starting end of the cable coiled around the reel is adjustable by moving the reel along the slide rail and rotating the reel around the central axis in a state in which the gripper is separated from the reel and fixed at a predetermined position.

A flat knitting machine yarn feeder with variable yarn feeding positions is provided. The flat knitting machine yarn feeder includes a driving mechanism and a yarn feeding mechanism. The driving mechanism is controlled by an electronic signal and includes a driving plate which makes a push stroke after started. The yarn feeding mechanism comprises a joining plate connected with the driving plate and a yarn feeding arm assembled with the joining plate. The joining plate comprises a guide hole. The yarn feeding arm comprises a guide column disposed in the guide hole. The joining plate makes a displacement stroke when the driving plate makes the push stroke. The guide column changes a position in the guide hole when the joining plate makes the displacement stroke. The yarn feeding arm changes a yarn feeding position when the guide column changes the position.

A method of aligning a wire with a pathway inlet includes directing a feeding end of a wire toward a pathway inlet of a feed pathway, creating a pressure differential between the pathway inlet and a pathway outlet of the feed pathway thus creating a pressure-driven gas flow around the wire and into the pathway inlet. The wire is urged along the feed pathway toward the pathway outlet via the shear force of the gas flow created by the pressure differential. A method of preventing stiction of a wire with an inner wall of a thin pathway includes creating a pressure differential between a pathway inlet and a pathway outlet thus creating a pressure-driven gas flow around a feeding end of the wire and into the pathway inlet of the pathway, and inducing one of a flutter or vibration in the wire at the feeding end of the wire.

A method of aligning a wire with a pathway inlet includes directing a feeding end of a wire toward a pathway inlet of a feed pathway, creating a pressure differential between the pathway inlet and a pathway outlet of the feed pathway thus creating a pressure-driven gas flow around the wire and into the pathway inlet. The wire is urged along the feed pathway toward the pathway outlet via the shear force of the gas flow created by the pressure differential. A method of preventing stiction of a wire with an inner wall of a thin pathway includes creating a pressure differential between a pathway inlet and a pathway outlet thus creating a pressure-driven gas flow around a feeding end of the wire and into the pathway inlet of the pathway, and inducing one of a flutter or vibration in the wire at the feeding end of the wire.

An automated filament exchange method includes: locating the spool for winding the first filament for the 3D printer; winding the first filament on the subspace of the spool located at the spool location step; allowing the first filament wound at the subspace first filament winding step to pass through a gap formed on the main space flange located between the main space and the subspace; and winding the first filament located at the main space of the spool on the main space of the spool, wherein after the first filament is wound on the subspace of the spool, the first filament passes through the gap and is then wound multi-layeredly on the main space of the spool.

An automated filament exchange method includes: locating the spool for winding the first filament for the 3D printer; winding the first filament on the subspace of the spool located at the spool location step; allowing the first filament wound at the subspace first filament winding step to pass through a gap formed on the main space flange located between the main space and the subspace; and winding the first filament located at the main space of the spool on the main space of the spool, wherein after the first filament is wound on the subspace of the spool, the first filament passes through the gap and is then wound multi-layeredly on the main space of the spool.

A cable pushing device is an apparatus that efficiently pushes a cable into a pipe with minimal effort. The cable pushing device includes a frame, a first wheel assembly, a second wheel assembly, and a cable guide system. The frame upholds the first wheel assembly, the second wheel assembly, and the cable guide system. The first wheel assembly and the second wheel assembly press against the cable and push the cable into the pipe. The cable guide system positions both the cable and the pipe onto the frame and between the first wheel assembly and the second wheel assembly. The first wheel assembly and the second wheel assembly are aligned with each other such that as the second wheel assembly is rotated by a user, the first wheel assembly applies press onto the cable, opposite the second wheel assembly, and consequently pushes the cable into the pipe.

A cable pushing device is an apparatus that efficiently pushes a cable into a pipe with minimal effort. The cable pushing device includes a frame, a first wheel assembly, a second wheel assembly, and a cable guide system. The frame upholds the first wheel assembly, the second wheel assembly, and the cable guide system. The first wheel assembly and the second wheel assembly press against the cable and push the cable into the pipe. The cable guide system positions both the cable and the pipe onto the frame and between the first wheel assembly and the second wheel assembly. The first wheel assembly and the second wheel assembly are aligned with each other such that as the second wheel assembly is rotated by a user, the first wheel assembly applies press onto the cable, opposite the second wheel assembly, and consequently pushes the cable into the pipe.

A cable pushing device is an apparatus that efficiently pushes a cable into a pipe with minimal effort. The cable pushing device includes a frame, a first wheel assembly, a second wheel assembly, and a cable guide system. The frame upholds the first wheel assembly, the second wheel assembly, and the cable guide system. The first wheel assembly and the second wheel assembly press against the cable and push the cable into the pipe. The cable guide system positions both the cable and the pipe onto the frame and between the first wheel assembly and the second wheel assembly. The first wheel assembly and the second wheel assembly are aligned with each other such that as the second wheel assembly is rotated by a user, the first wheel assembly applies press onto the cable, opposite the second wheel assembly, and consequently pushes the cable into the pipe.

An automated filament exchange method includes: locating the spool for winding the first filament for the 3D printer; winding the first filament on the subspace of the spool located at the spool location step; allowing the first filament wound at the subspace first filament winding step to pass through a gap formed on the main space flange located between the main space and the subspace; and winding the first filament located at the main space of the spool on the main space of the spool, wherein after the first filament is wound on the subspace of the spool, the first filament passes through the gap and is then wound multi-layeredly on the main space of the spool.