DEVICE FOR CHANGING PIPE IN FINE SPINNING FRAME

To provide a device for changing a pipe in a ring fine spinning frame capable of reducing a rotation amount of a pantograph mechanism caused by thermal expansion of a rod.SOLUTION: A ring fine spinning frame 10 includes a fine spinning frame machine base 11, pantograph mechanisms 21 for lifting and lowering a doffing bar 20 including a bobbin holding device, a drive shaft 22 having an axis line extending in a longitudinal direction of the fine spinning frame machine base 11 to drive the pantograph mechanism 21, a power cylinder 27 for reciprocating the drive shaft 22, and a turning mechanism for turning the whole pantograph mechanisms 21 to a position of coming close to the fine spinning frame machine base 11 and a position of being apart from it; the turning mechanism includes a first rod 29 and a second rod 30 reciprocated in the longitudinal direction of the fine spinning frame machine base 11, a first air cylinder 31 for reciprocating the first rod 29, a second air cylinder 32 for reciprocating the second rod 30, a control device 33 and a conversion mechanism for converting linear motion of the first rod 29 and the second rod 30 to turning of the whole pantograph mechanisms 21.SELECTED DRAWING: Figure 1 【課題】ロッドの熱膨張に伴うパンタグラフ機構の回動量を少なくできる精紡機の管替装置を提供すること。【解決手段】リング精紡機１０は、紡機機台１１と、ボビン把持装置を備えたドッフィングバー２０を昇降させるパンタグラフ機構２１と、紡機機台１１の長手方向に軸線が延びパンタグラフ機構２１を駆動させる駆動シャフト２２と、駆動シャフト２２を往復動させるパワーシリンダ２７と、パンタグラフ機構２１全体を紡機機台１１に接近する位置と離間する位置とに回動させる回動機構と、を備える。回動機構は、紡機機台１１の長手方向に往復動する第１ロッド２９及び第２ロッド３０と、第１ロッド２９を往復動させる第１エアシリンダ３１と、第２ロッド３０を往復動させる第２エアシリンダ３２と、制御装置３３と、第１ロッド２９及び第２ロッド３０の直動をパンタグラフ機構２１全体の回動に変換する変換機構と、を備える。【選択図】図１