Safety device for a bandsaw
AssigneeAumatech
InventorsRonan Vaucher, Pierre Even
Life of this patent
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Abstract
A safety device for a bandsaw includes a frame and a pair of jaws rotatably mounted thereon. The frame is mounted on the framework of the saw with the jaws on either side of the blade. An actuating rod is slidably mounted on the frame. A resilient return member constrains the sliding and a two-way transmission transforms it into a rotation of the pair of jaws. An electromagnetic actuator is rigidly connected to the frame and a retaining member is rigidly connected to the actuator. The rod has a receiving portion which engages with the retaining member when the rod is in a first position relative to the frame. The transmission is arranged so that the jaws are separated from one another when the rod is in the first position.
Claims15
Safety device for a bandsaw (1) comprising a frame (17) and a pair of jaws (13) rotatably mounted on the frame (17), said frame (17) configured to be mounted on a framework (3) of the bandsaw (1) with the jaws (13) disposed on either side of a blade (5) of this bandsaw (1), the device further comprising an actuating rod (37) slidably mounted on the frame (17), and at least one elastic return member (55) constraining sliding of the actuating rod (37), wherein a two-way transmission (41) transforms the sliding of the actuating rod (37) into a rotation of the pair of jaws (13), the device further comprises an electromagnetic actuator (65) rigidly connected to the frame (17) and a retaining member rigidly connected to the electromagnetic actuator (65), the actuating rod (37) is arranged with a receiving portion (63) which is capable of engaging with the retaining member when the actuating rod (37) is in a first position relative to the frame (17), the two-way transmission (41) being arranged so that the jaws (13) are distant from one another when the actuating rod (37) is in said first relative position, and the electromagnetic actuator (65) maintains the engagement between the retaining member and the receiving portion (63) as long as the electromagnetic actuator (65) is supplied with current.
Bandsaw (1) comprising a framework (3) and a blade (5), the saw further comprising a safety device comprising a frame (17) and a pair of jaws (13) rotatably mounted on the frame (17), said frame (17) being mounted on the framework (3) with the jaws (13) disposed on either side of the blade (5), the device further comprising an actuating rod (37) slidably mounted on the frame (17), and at least one elastic return member (55) constraining sliding of the actuating rod (37), wherein a two-way transmission (41) transforms the sliding of the actuating rod (37) into a rotation of the pair of jaws (13), the device further comprises an electromagnetic actuator (65) rigidly connected to the frame (17) and a retaining member rigidly connected to the electromagnetic actuator (65), the actuating rod (37) is arranged with a receiving portion (63) which is capable of engaging with the retaining member when the actuating rod (37) is in a first position relative to the frame (17), the two-way transmission (41) being arranged so that the jaws (13) are distant from one another when the actuating rod (37) is in said first relative position, and the electromagnetic actuator (65) maintains engagement between the retaining member and the receiving portion (63) as long as the electromagnetic actuator (65) is supplied with current.
Dependencies are inferred from the claim text.