The present invention discloses a string tightening device that can easily adjust the characteristics of the string, such as the length or tension of the string used in various wearing products or household items, including shoes, bags, clothing, and the like.

A string tightening device of the present invention includes: a base having a space therein and including a first projection portion; a lower rotation member that is disposed in the base and moves a predetermined distance in a direction of separation from the base or the opposite direction thereof, an upper rotation member coupled to the lower rotation member, including a second locking portion corresponding to the first locking portion, and rotating only in one direction when the first locking portion and the second locking portion are closely attached; and an inner housing portion provided in the lower rotation member or the upper rotation member and wound therearound.

A method and a device for optimal use of windable material during winding up onto and/or unwinding from storage drums operates in conjunction with feeding to winding machines. The windable material can be a textile web, a fabric web, a wire or the like. A counterforce necessary for keeping the tension force acting on the windable material constant is maintained until all of the windable material has been fed into subsequent processing. The counterforce may be maintained by a connecting element that is connected to the windable material and to the storage drum, is able to be wound up, and is of lower quality than the windable material. In the device, controllable means generate the counterforce counteracting the tension force until all of the windable material has been drawn into the subsequent processing device.

The invention relates to an electrical cable reel. According to the invention, the reel comprises an arrangement (4) for remotely monitoring the absence of cable wound around the reel, said arrangement comprising a sensor (4A) and an electronic board connected to the sensor and linked to a remote application that is enabled.

The wire electric discharge machining device includes a wire bobbin configured to wind and hold a wire electrode, a wire delivery means configured to draw the wire electrode from the wire bobbin and deliver the wire electrode continuously toward a work-piece, a load applying means configured to apply a load to the wire bobbin in a direction against the drawing of the wire electrode, rotation speed detection means configured to detect a rotation speed of the wire bobbin, an emptiness determination means configured to determine that the wire bobbin reaches an empty state based on a rapid change in the rotation speed of the wire bobbin detected by the rotation speed detection means, and a drive control part configured to stop the drive of the wire delivery means when the emptiness determination means determines that the wire bobbin reaches the empty state.

The invention provides a method and a system for monitoring of yarn drawn axially from a bobbin (24a). It is desired to monitor one or both of remaining capacity of an active bobbin and transfer from one active bobbin 24a to the next.

A free portion (30) of the yarn moves circumferentially about the bobbin as the yarn is drawn from it. The invention involves a sensor responsive to electromagnetic radiation arranged to sense the free portion (30) of the yarn and to provide an output which varies with a period P corresponding to the period of the circumferential movement of the free portion of the yarn about the bobbin (24a). The period P can be interpreted to provide the desired information.

The present invention relates to a string adjusting device. According to the present invention, there is provided a string adjusting device, including: a base unit including a base plate, a cylindrical lower housing provided on the base plate, and stop protrusions formed to protrude from an outer surface of the lower housing; and a rotation unit including a bobbin rotatably installed inside the housing and configured such that a string is wound therearound, a rotation head connected to one end portion of the bobbin, and an engagement member formed and provided inside the rotation head to be elastically deformable and configured to be caught on the stop protrusions.

The component supply device includes a body, a first carrier tape transporter, a second carrier tape transporter, and a controller. The body includes a tape transport path. The first carrier tape transporter transports a carrier tape to a component pickup position. The second carrier tape transporter transports the carrier tape to the first carrier tape transporter. The controller is configured to communicate with the component installation device and control the first carrier tape transporter and the second carrier tape transporter in one operation mode selected from a plurality of operation modes.

The present invention is a container for storing, managing and monitoring the usage time and consumption of a filamentary material consumed by an associated 3D printer during the printer's operation, including a storage quantity of at least one filament, and a power supply, and filament locking means, and filament lock actuation means. The container is universal and can therefore be used with a variety of makes and models of 3D printer hardware. The filament is fed from the quantity of filament through the filament locking means, prior to exiting the container. The filament locking means are normally actuated, thereby preventing feed of filament to emerge from the container unless a predetermined set of unlocking conditions are met to disengage the filament locking means via the filament lock actuation means.

Provided is a yarn spindle coding method including: when determining that yarn spindles are fully wound, sleeving the yarn spindles in the winding machine sequentially outside a yarn connecting rod of a doffer, and updating the number of unloading times of the winding machine and recording first doffing time of each yarn spindle; generating a first information code of each yarn spindle based on identification information of the winding machine, the updated number of unloading times, the first doffing time and position information of each yarn spindle; and sending each first information code to the doffer, so that the doffer determines a corresponding target yarn spindle among the yarn spindles according to a matching degree between the first doffing time and second doffing time of each yarn spindle recorded by the doffer and code the information code on a corresponding target yarn spindle.