Abstract: A band type strapping machine comprises a band feeding roller and a band returning roller wherein a first pressing roller is placed above the band feeding roller so as to be able to come in contact with the feeding roller, a second pressing roller is placed below the band returning roller so as to be able to come in contact with the returning roller and the band feeding roller and the band returing roller are driven in the same direction by a motor.

Abstract: An apparatus for stacking signatures is compactly constructed with a device to receive and forward horizontally a stream of the signatures partially overlapped from the end of a conveyor connected to the end of a rotary printing press; a device to pile up vertically the signatures into a small bundle; a frame member to stack up the small bundle directly underneath the piling device, such frame member being rotatable 180.degree. to turn each small bundle alternately for stack compensation; and a receiving table movable vertically within the frame member by an elevating mechanism and rotatable along with the frame member.

Abstract: A band feeding and tightening apparatus for a band strapping machine comprises a main shaft rotatably placed at a lateral position of a serial connection of a motor and a reduction gear device; a high speed revolution transmitting means to transmit a rotational force at the high speed side of the reduction gear device to the main shaft; a low speed revolution transmitting means to transmit a rotational force at the low speed side of the reduction gear to the main shaft through an electromagnetic clutch; a stationary shaft placed in parallel to the main shaft, the stationary shaft rotatably supporting a feed roller and a power transmitting means to transmit a rotational force of the high speed revolution transmitting mean to the feed roller through a friction clutch; and the return roller mounted on the main shaft through a one-way clutch.

Abstract: A feed roller is usually rotated at a high speed; a return roller is fitted to a return shaft rotated at a low speed through a one-way clutch; a rocker roller driven at a high speed is brought into press-contact with the return roller so that the return roller is rotated at a high speed in accordance with the high speed rotation of the rocker roller thereby performing the primary tightening operation for a band; then, the return roller is engaged with the return shaft by the function of the one-way clutch when the rotational speed of the return roller coincides with that of the return shaft, thereby performing the secondary tightening operation with a strong pulling force. The strapping machine having the above mentioned construction provides noiseless and speedy operations for strapping the band around a package.

Abstract: A band type strapping machine comprises a feeding and tightening roller driven by a motor, an auxiliary roller in contact with the feeding and tightening roller, a cam shaft which is rotated by the motor through a reduction gear and a clutch mechanism and which has cams for respectively actuating a rear gripper, a heater, a press bar and a front gripper, wherein the motor is capable of instantaneous change of normal and reverse rotations and has a large starting torque, and an electromagnetic clutch is fitted to the rotary shaft of the tightening and feeding roller so as to be movable in the axial direction depending upon increase of a band tightening force whereby detection of the tightening force caused by the movement of the electromagnetic clutch is mechanically related to the engagement or disengagement of the clutch mechanism.

Abstract: A strapping machine comprises a roller for reversely rotating by a one way motor to tighten a package with a band, a differential reducing mechanism engaged to a clutch whereby the roller is reversely rotated at high speed before sliding the clutch and is further reversely rotated at low speed and high torque after sliding the clutch and a seal forming shaft starts when a return roller is stopped under a predetermined tension applied by tightening the band. The strapping machine further comprises a cutter anvil to contact the inner surfaces of the bands at the superposed part with a heating element inserted into the superposed part of the bands and a cutter for cutting the band under suitable tension after cooling the heat-sealed bands.

Abstract: Automatic band strapping apparatus with a table for supporting an article during banding. An arch frame extends in the form of an upright loop from one side to another of the table. The arch frame has an elongated side wall also in the form of an upright loop in a plane substantially normal to the table. An elongated U-sectioned arch guide made of flexible plastics material such as ultra-high molecular polyethylene has a loop shape following the contour of the arch frame side wall, and one edge surface facing that side wall is opened by means of a groove. Springs press the grooved edge surface of the arch guide against the arch frame side wall thereby defining a band passage through the arch guide which is normally closed. The arch guide is locally separable from the side wall against the urgence of the springs, progressively around the length of the arch frame, providing a moderate draw-out resistance to enable release and withdrawal of band progressively and continuously from the band passage.