WIRE FEEDING DEVICE, WIRE FORMING MACHINE AND WIRE FEEDING METHOD

• Main Authors: OBAYASHI EIJI, NOJIMA TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 28.06.2018
• Subjects: CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PACKING; PERFORMING OPERATIONS; PUNCHING METAL; STORING; TRANSPORTING; WORKING OR PROCESSING OF METAL WIRE

PROBLEM TO BE SOLVED: To provide a wire feeding device, a wire forming machine and a wire feeding method capable of easily adjusting a holding force for wire and capable of suppressing a production amount of an NG product.SOLUTION: In a wire feeding device 20, an interval between a pair of feeding rollers 18, 19 is adjusted so as to cause a measured crushed amount Dj of wire 90 to correspond to a target crushed amount Dw and a holding force for the wire 90 is brought close to a proper value. Thereby, a production amount of such an NG product that the wire 90 is over-crushed can be suppressed. Further, although the crushed amount of the wire 90 is largely changed by a slight change of the holding force in a plastic deformation region of the wire 90, the wire feeding device 20 adjusts a holding force as a parameter which is slightly changed based on the crushed amount as the parameter which is largely changed and, therefore, the holding force can be easily adjusted to the proper value without over-crushing the wire.SELECTED DRAWING: Figure 1 【課題】線材に対する挟持力を容易に調整することができ、ＮＧ品の発生量を抑えることが可能な線材送給装置、線材成形機及び線材送給方法を提供する。【解決手段】本発明の線材送給装置２０では、線材９０の実測潰れ量Ｄｊを目標潰れ量Ｄｗに一致させるように１対の送給ローラ１８，１９の間隔を調整して線材９０に対する挟持力を適正値に近づける。これにより、線材９０が潰れ過ぎたＮＧ品の発生量を抑えることができる。また、線材９０の塑性変形域では挟持力の僅かな変更で線材９０の潰れ量が大きく変化するところを、本発明の線材送給装置２０は、大きく変化するパラメータである潰れ量に基づいて、僅かに変化するパラメータである挟持力を調整するので、線材を潰し過ぎずかつ挟持力を適正値に調整することを容易に行うことができる。【選択図】図１