A chain replacement apparatus includes a body seat, an operation assembly, and a repair block. The operation assembly is rotatably disposed on the body seat. The repair block is disposed on the body seat and selectively switched among a removing status, a combining status, and a riveting status, so as to, through the operation assembly, break the chain, press the outer and inner chain plates, and rivet the chain. The repair block rotates about an action axis to be switched among different statuses.

A chain replacement apparatus includes a body seat, an operation assembly, and a repair block. The operation assembly is rotatably disposed on the body seat. The repair block is disposed on the body seat and selectively switched among a removing status, a combining status, and a riveting status, so as to, through the operation assembly, break the chain, press the outer and inner chain plates, and rivet the chain. The repair block rotates about an action axis to be switched among different statuses.

A chain replacement apparatus includes a body seat, an operation assembly, and a repair block. The operation assembly is rotatably disposed on the body seat. The repair block is disposed on the body seat and selectively switched among a removing status, a combining status, and a riveting status, so as to, through the operation assembly, break the chain, press the outer and inner chain plates, and rivet the chain. The repair block rotates about an action axis to be switched among different statuses, facilitating an efficient chain maintenance and replacement operation.

A manufacturing apparatus for an accessory, including: a magazine holding unit in which a material magazine that holds a metal sheet material in a roll shape is arranged; a material feeding unit that repeats conveyance in which the metal sheet material is fed forward from the material magazine, and stop of the conveyance; a die-set unit that includes a die set which blanks the metal sheet material conveyed from the material feeding unit into a predetermined shape; a machining unit that bends a metal component formed by the blanking in the die-set unit; and a guide unit that is provided between the material feeding unit and the die-set unit, and that flattens and feeds the metal sheet material conveyed from the material feeding unit to the die-set unit, the guide unit including restricting the metal sheet material in a width direction of the metal sheet material.

A mandrel tool comprising a mandrel head having a body, said body including a first end, a second end opposite to the first end, and an exterior surface extending between the first and second ends; and a slit extending at least partially through the exterior surface of the body and having a width to accommodate a sharp edge of a cutting instrument. The slit serves as a guide for the cutting instrument, which cuts through wire wound around the mandrel to simultaneously create a plurality of uniform rings without having to labor further.

An automatic round link chain counting and cutting machine is disclosed, comprising a machine base, a first chain box and a second chain box. The machine base is provided with a control mechanism, a drive mechanism, an anti-seizing mechanism, a chain cutting mechanism, a damping guide mechanism and a detection mechanism. The control mechanism comprises a touch panel, a PLC, a relay and a control button. The drive mechanism comprises a servo motor, a reducer and a drive sprocket. The anti-seizing mechanism comprises a first guide wheel, a first rocker arm and a first secured shaft. The chain cutting mechanism comprises a press head, a press bench and a chain cutting mold. The damping guide mechanism comprises a damping plate, a first steel plate and a second steel plate. The detection mechanism comprises a second guide wheel, a second rocker arm and a second secured shaft. The present invention has a simple structure, high practicability, realizes automatic chain counting and cutting, reduces the labor intensity of the operator, improves efficiency, is environmentally-friendly in comparison with sand wheel cutting, obtains an accurate number of cut round links, is clean and ensures hoist quality.

An automatic round link chain counting and cutting machine is disclosed, comprising a machine base, a first chain box and a second chain box. The machine base is provided with a control mechanism, a drive mechanism, an anti-seizing mechanism, a chain cutting mechanism, a damping guide mechanism and a detection mechanism. The control mechanism comprises a touch panel, a PLC, a relay and a control button. The drive mechanism comprises a servo motor, a reducer and a drive sprocket. The anti-seizing mechanism comprises a first guide wheel, a first rocker arm and a first secured shaft. The chain cutting mechanism comprises a press head, a press bench and a chain cutting mold. The damping guide mechanism comprises a damping plate, a first steel plate and a second steel plate. The detection mechanism comprises a second guide wheel, a second rocker arm and a second secured shaft. The present invention has a simple structure, high practicability, realizes automatic chain counting and cutting, reduces the labor intensity of the operator, improves efficiency, is environmentally-friendly in comparison with sand wheel cutting, obtains an accurate number of cut round links, is clean and ensures hoist quality.