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.

The present disclosure is generally directed towards calculating a remaining length of a cable on a cable reel. Generally, a first distance between a top edge of a first flange of the cable reel and a top portion of the cable remaining on the cable reel is received at a processor. A winding characterization indicating a configuration of the cable wound on the cable reel is also received at the processor. Dimensions of the cable reel are also received at the processor and include: a diameter of the first flange, a cable reel traverse distance, and a diameter of a drum of the cable reel. The cable reel traverse distance indicates a distance between the first and second flanges of the cable reel. The remaining length of the cable on the cable reel is calculated based on the first distance, the winding characterization, and the dimensions of the cable reel.

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.

A lead wire storage mechanism stores most of a lead wire such that the lead wire can be taken out from a tip end portion. A tension adjusting mechanism including a dancer roller and two lifting and lowering guide rollers is formed with a partial space that is to be a part of a hand travel space at a time of a preparation state. A lead wire guide mechanism including an opening and closing lead guide is formed with a partial space that is to be a part of the hand travel space at the time of the preparation state. A lead wire grasping and moving mechanism can execute a grasping operation for grasping a tip end portion of the lead wire with a grasping part, and a grasping part moving operation for moving the grasping part through the hand travel space.

A lead wire storage mechanism stores most of a lead wire such that the lead wire can be taken out from a tip end portion. A tension adjusting mechanism including a dancer roller and two lifting and lowering guide rollers is formed with a partial space that is to be a part of a hand travel space at a time of a preparation state. A lead wire guide mechanism including an opening and closing lead guide is formed with a partial space that is to be a part of the hand travel space at the time of the preparation state. A lead wire grasping and moving mechanism can execute a grasping operation for grasping a tip end portion of the lead wire with a grasping part, and a grasping part moving operation for moving the grasping part through the hand travel space.

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 roller configured to draw the wire electrode from the wire bobbin and deliver the wire electrode continuously toward a work-piece, a brake motor configured to apply a load to the wire bobbin in a direction against the drawing of the wire electrode, rotation speed detector configured to detect a rotation speed of the wire bobbin, an emptiness determination device 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 detector, and a drive control part configured to stop the drive of the wire delivery roller when the emptiness determination device 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.