Abstract: A transfer conveyor which prevents collisions between works to be conveyed when the works to be conveyed or stored are carried on a conveyer track by a work support having a length shorter than the length of works to be conveyed, which permits reverse traveling during maintenance operations and the like. The collision preventing mechanism includes a sensing element which is biased into a contact position where it engages a leading work support on the conveyor track and is deflected, a sensing lever 132, which mounts the sensing element and pivots in accordance with the contacting/deflecting operation of the sensing element, and a stopper lever downstream from the sensing element, which is connected to the sensing element to be displaced into the path of travel of the next trailing work support when the sensing element is in the contacting position, The stopper lever limits the travel of the trailing work support to a predetermined storage conveying interval.

Abstract: A transfer conveyor which prevents collisions between works to be conveyed when the works to be conveyed or stored are carried on a conveyer track by a work support having a length shorter than the length of works to be conveyed, which permits reverse traveling during maintenance operations and the like. The collision preventing mechanism includes a sensing element which is biased into a contact position where it engages a leading work support on the conveyor track and is deflected, a sensing lever 132, which mounts the sensing element and pivots in accordance with the contacting/deflecting operation of the sensing element, and a stopper lever downstream from the sensing element, which is connected to the sensing element to be displaced into the path of travel of the next trailing work support when the sensing element is in the contacting position, The stopper lever limits the travel of the trailing work support to a predetermined storage conveying interval.

Abstract: A hybrid carrying truck is disclosed which has merits of both of a skid carrier and a carrying truck such that it can successively and smoothly transfer between different carrying lines to carry a work whatever the carrying lines are and can secure a removing position from the carrying line to a refuge area freely and with safety. The hybrid carrying truck includes traveling wheels mounted at front and back positions on the left and right sides of a truck body for being rolled on a pair of rails to allow the truck body to travel along a carrying line, a pair of left and right skid members mounted on a bottom face of the truck body and elongated in a carrying direction of the hybrid carrying truck, and a truck hauling engaging member mounted at a central position of the bottom face of the truck body in a widthwise direction of the truck body.

Abstract: A retainer dog is pivotally mounted on a pusher dog at the front end portion thereof and normally urged to a standing position. The distance between a retainer surface of the retainer dog and a thrust surface of the pusher dog is predetermined such that a space large enough for the retainer dog to rotate with a tilting radius can be obtained.

Abstract: In an upper tool for a press brake formed with an inclined surface (9S) narrowed upwardly at an upper portion thereof and an engage groove (9G) formed under the inclined surface (9S). The inclined surface (9S) is brought into contact with an inclined surface of an upper tool clamp member (11), when the upper tool is clamped between an upper tool holder body (5) and an upper tool clamp member (11), in such a way that clamping force can be further increased when the upper tool is engaged with a die (63). Further, in an upper tool holder apparatus for a press brake, the pivotal upper tool clamp member (211) is formed with an engage projection (211P) for engaging a drop prevention groove (205G) formed in the upper tool (205).

Abstract: The present invention provides a traverser, which includes a support member driven by a chain and movable between a carry-in rail and carry-out rail which are disposed parallel with each other. The support member transfers a truck from said carry-in rail to said carry-out rail. A groove for receiving a flange of a wheel of the truck is formed in an upper surface of the support member.

Abstract: An upper tool for a press brake is removably attachable to an upper tool holding device mounted on an upper table of the press brake. The upper tool includes a mounting portion and a projection portion, both adjacent a first end of the upper tool, a work processing portion adjacent a second end of the upper tool, a clamping surface and a sliding surface, extending divergingly from the projection portion, and a contact surface extending substantially perpendicular to the sliding surface. The clamping surface extends along the length of the upper tool beyond the contact surface.

Abstract: In an upper tool for a press brake clamped between a support plate (7) of an upper tool holder body (5) attached to a lower portion of an upper table (3) and an upper tool clamp member (11), the upper tool (9) is formed with an inclined surface (9S) narrowed upward at an upper portion thereof and with an engage groove (9G) engaged with an engage projection (11K) of the upper tool clamp member (11) and formed under the inclined surface (9S). Therefore, the inclined surface (9S) is brought into contact with an inclined surface of the upper tool clamp member (11), when the upper tool is clamped between the upper tool holder body (5) and the upper tool clamp member (11), in such a way that clamping force can be-further increased when the upper tool is engaged with a die (63).

Abstract: An upper tool holder apparatus (1) for removably supporting an upper tool (9) on an upper table (3) of a press brake includes: a holder body (5) removably attached to the upper table; an upper tool clamp (11) attached to the holder body, for pushing and fixing an upper portion of the upper tool to a support plate (7) provided at a lower portion of the holder body; a clamping force adjusting device (13) for adjusting a clamping force of the upper tool clamp; and a clamp releasing device (15) for releasing the upper tool clamped by the upper tool clamp. In particular, a wedge-shaped member (17) vertically movably provided at a lower portion of the upper tool clamp is formed with a stop portion (17K) engageable with and disengageable from an engage portion (9K) formed in the upper tool (9).

Abstract: The present invention provides a pusher dog, which is mounted on a driving conveyor chain and normally urged to a standing position, and which is detachably hooked on a truck. The pusher dog tilt operation plate is mounted on a storage conveyor. An upward urging member pushes up the pusher dog tilt operation plate to abut a lower end portion of the pusher dog in such a direction that the pusher dog is made to tilt and is released from engagement with the truck. A press down member presses down the pusher dog tilt operation plate against the upward urging force.

Abstract: An upper tool for a press brake is removably attached on an upper tool holding device mounted on an upper table of the press brake, and includes a wedge portion having a contact surface brought into contact with a lower surface of a support plate provided on a holder body of the upper tool holding device. A slide surface is slidably brought into contact with any of front and rear surfaces of the support plate, and a clamp surface is brought into pressure contact with a pressing-down and fixing section of an upper-tool pressing-down and fixing member of the upper tool holding device. A work processing portion processes a workpiece in cooperation with a lower tool. Further, an upper tool holding device for a press brake, for removably mounting and supporting an upper tool on an upper table of the press brake, includes a holder body attached to the upper table.

Abstract: An upper tool (9) for a press brake, the upper tool being clamped to a supported body (5) mounted on an upper table (3) by a clamping force of a pressing-down and fixing member (11), includes: a shank to be clamped being formed with an inclined surface (9c) for gradually increasing the clamping force of the pressing-down and fixing member (11) to the upper tool (9) by relative movement of the upper tool (9) to the support body (5).

Abstract: An upper tool for a press brake includes a push actuating section (9K, 107, 9U) for actuating upward an actuated member (17, 103P, 121) movable up and down, in a clamping force increasing mechanism such that an upper tool clamping force can be increased gradually when the actuated member (17, 103P, 121) mounted on an upper holder device (1) of the press brake is moved upward. An example of the push actuating section is a lower surface of an engage groove portion (9K) extending horizontally and formed in any of front and rear surfaces of the upper tool (9). Further, the engage groove portion (9K) is formed between a vertical position roughly the same as a holder contact surface (9F) formed at a shoulder portion of the upper tool (9) and another vertical position slightly lower than an upper end of the upper tool.

Abstract: A lower tool device for a press brake comprises: a T-shaped slot (19) extending in front and rear direction formed in a tool holder block (17) or between two adjacent tool holder blocks (17) mounted on a lower table (5) of a press brake; a flange member (23) movable into and from the slot and provided under a support rod (21) vertically disposed on an under surface of a tool (9) mounted on the tool holder block (17); a push member (27) attached to the tool holder block, for pushing the flange member downward; and a push urging device (27) for urging the push member so as to further push the flange member downward.

Abstract: An upper tool holder apparatus (1) for removably supporting an upper tool (9) on an upper table (3) of a press brake includes: a holder body (5) removably attached to the upper table; an upper tool clamp (11) attached to the holder body, for pushing and fixing an upper portion of the upper tool to a support plate (7) provided at a lower portion of the holder body; a clamping force adjusting device (13) for adjusting a clamping force of the upper tool clamp; and a clamp releasing device (15) for releasing the upper tool clamped by the upper tool clamp. In particular, a wedge-shaped member (17) vertically movably provided at a lower portion of the upper tool clamp is formed with a stop portion (17K) engageable with and disengageable from an engage portion (9K) formed in the upper tool (9).

Abstract: The invention relates to a shearing machine comprising of upper and lower blades with a non-contact detection means for measuring the thickness of a work piece. The machine also has a control means for adjusting the clearance between the upper and lower blades of the shearing machine to a value matching the plate thickness.

Abstract: A sheet or plate metal machining tool featuring a clamp for gripping the edge of the metal sheet and recognizing the said clamp is in a position to be struck by the tool's machining section. Upon such recognition, the clamp is capable of releasing the sheet and rotating out of the way of the machine tools.

Abstract: The present invention relates to a positioner for positioning a work piece such as a sheet or plate having first guide rails extending in the direction of the X-axis and second guide rails extending in the direction of the Y-axis, first and second carriages respectively movably supported on said first and second guide rails, clamp support members respectively supported by the first and second carriages and being movable in the direction perpendicular to the direction of the movement of the carriages, and clamping devices mounted to each clamp support member and adapted to clamp the work piece.

Abstract: Apparatus for making folds or bends of adjustable length in sheet metal. The apparatus includes a retractable chain-like die which can be shortened or lengthened so as to adjust the operative length of the die.