Abstract: A band saw replacing device includes a slide seat mounted on a top seat of a machine stand of a band sawing machine, an adjustment rod connected with the slide seat, a pivoting member, and a wrenching member. The pivoting member is pivotally connected to the top seat of the machine stand at an end thereof and is connected with the adjustment rod. The wrenching member is pivotally mounted on the top seat and has an arched engaging portion extending outwards therefrom for supporting the other end of the pivoting member. Accordingly, it's as easy as pushing the wrenching member to facilitate lowering the adjustment rod and to further shorten a distance between a driving wheel mounted on the slide seat and a driven wheel mounted on the machine stand, thereby replacing a band saw fitted on the driving wheel and the driven wheel rapidly and efficiently.

Abstract: A housing of a band sawing machine is composed of a bottom shell and at least one cover shell. The bottom shell and the cover shell are respectively made of a metal sheet by stamping. The bottom shell has a peripheral wall perpendicularly extending from a border thereof. The cover shell has a lateral side hinged to a lateral side of the peripheral wall of the bottom shell such that the cover shell can be turned to close/open the housing. According to an alternate design of the present invention, the housing is composed of a bottom shell and two cover shells respectively hinged to the lateral side of the peripheral wall of the bottom shell at different elevations.

Abstract: A dust collector includes a mounting seat mounted outside dust outlets of a housing of a band sawing machine, a boosting unit received in the mounting seat, and a dust collecting member. The mounting seat has an axial portion and a through hole passing through the axial portion. The boosting unit includes a rotor and a fan blade. The rotor has a body portion rotatably mounted through the through hole of the mounting seat and fitted to the fan blade at a distal end thereof, and a head portion connected with a transmission shaft of a drive motor of the band sawing machine. The dust collecting member is connected with the mounting seat and includes a receiving space. Accordingly, the dust collector is synchronically activated together with the band sawing machine to run for collecting sawdust.

Abstract: An apparatus for adjusting the worktable of the band sawing comprising a base providing at the band sawing machine. Two turning pieces, each of which has a first guiding slot, a second guiding slot and a rack. The turning pieces fix at the bottom side of the worktable with the base locating between the turning pieces. A guiding shaft pivots at said base via the first guiding slots of the turning pieces. An adjusting shaft pivots at the base. Each end of said adjusting shaft respectively has a gear engaging with the racks of the turning pieces respectively. A pressing shaft pivots at the base via the second guiding slots of the turning pieces, and a locking member engages with the pressing shaft.

Abstract: A band saw shielding device is linked with an elevation guiding set of a band sawing machine comprising a wheel on which the band saw runs, and a stop portion. The shielding device comprises a main housing fastened with the elevation guiding set and having a front plate with a hollowed portion, a position confining portion disposed longitudinally and a band replacing slot, a receiving space formed in the center thereof for receiving the band saw; a movable cover having a slide plate disposed slidably at the position confining portion of the main housing, a stop edge connected with the slide plate and stopped by the stop portion of the band sawing machine. The shielding device cooperates with the elevation guiding set to surround the band saw, so as to prevent the band saw from being a safety hazard. The wheel is still received in the hollowed portion without interference when the main housing is raised.

Abstract: A band sawing machine has a band saw which runs on a drive wheel and a driven wheel of the band sawing machine. The band sawing machine is provided with a slide seat to which the driven wheel is pivoted. The band sawing machine is provided with an eccentric wheel in contact with the slide seat. The eccentric wheel is turned to bring about a change in diametrical distance, thereby resulting in the up-and-down movement of the slide seat. The distance between the drive wheel and the driven wheel is thus shortened to facilitate the replacing of the band saw.

Abstract: An apparatus for adjusting the worktable of the band sawing comprising a base providing at the band sawing machine Two turning pieces, each of which has a first guiding slot, a second guiding slot and a rack. The turning pieces fix at the bottom side of the worktable with the base locating between the turning pieces. A guiding shaft pivots at said base via the first guiding slots of the turning pieces. An adjusting shaft pivots at the base. Each end of said adjusting shaft respectively has a gear engaging with the racks of the turning pieces respectively. A pressing shaft pivots at the base via the second guiding slots of the turning pieces, and a locking member engages with the pressing shaft.

Abstract: A band saw shielding device is linked with an elevation guiding set of a band sawing machine comprising a wheel on which the band saw runs, and a stop portion. The shielding device comprises a main housing fastened with the elevation guiding set and having a front plate with a hollowed portion, a position confining portion disposed longitudinally and a band replacing slot, a receiving space formed in the center thereof for receiving the band saw; a movable cover having a slide plate disposed slidably at the position confining portion of the main housing, a stop edge connected with the slide plate and stopped by the stop portion of the band sawing machine. The shielding device cooperates with the elevation guiding set to surround the band saw, so as to prevent the band saw from being a safety hazard. The wheel is still received in the hollowed portion without interference when the main housing is raised.

Abstract: A band sawing machine has a band saw which runs on a drive wheel and a driven wheel of the band sawing machine. The band sawing machine is provided with a slide seat to which the driven wheel is pivoted. The band sawing machine is provided with an eccentric wheel in contact with the slide seat. The eccentric wheel is turned to bring about a change in diametrical distance, thereby resulting in the up-and-down movement of the slide seat. The distance between the drive wheel and the driven wheel is thus shortened to facilitate the replacing of the band saw.