Overload protection device used for sheet-fed automatic die cutting machine

Abstract

The invention discloses an overload protection device used for a sheet-fed automatic die cutting machine. The overload protection device comprises a torque limiter, an inductive switch and two safety latch hook mechanisms, wherein each safety latch hook mechanism comprises a cylinder, two sliding plates, a first fixing plate, a second fixing plate and at least one latch hook, the first fixing plate and the second fixing plate are respectively located on both sides of a main chain, and the ends on the same side are fixed on one connecting plate, and two sliding rods sleeved with pressure springs are fixed on the connecting plate; one ends of the two sliding plates, which are close to the connecting plate, and connecting blocks on the sliding rods are fixed, and the connecting block and a cylinder piston rod are fixed; the two sliding plates are respectively close to the outer sides of the first fixing plate and the second fixing plate; the latch hook provided with the main chain on the lower part is pivoted between the two fixing plates; the piston rod is extended, the connecting blocks drive the sliding plates to move, and the latch hook and the main chain are separated; the inductive switch controls the piston rod to retract, and the latch hook is engaged with the main chain. According to the invention, the response speed of the protection device is improved, damage of a gripper row is effectively prevented, and safety performance of a large die cutting machine is improved.

Description

technical field [0001] The invention relates to post-press mechanical equipment and an automatic die-cutting machine, and belongs to a safety protection device, in particular to an overload protection device for an automatic die-cutting machine for sheet-fed paper (including cardboard, corrugated paper, etc.). Background technique [0002] The running action of a sheet of paper in an automatic die-cutting machine is an intermittent movement. At present, the power is intermittently transmitted to the main sprocket through an intermittent box or other intermittent mechanisms, and the main sprocket is driven by a gripper. The main chain of the platoon runs intermittently. During the operation of the automatic die-cutting machine, because the speed of the machine is very fast and the speed of the load is always changing, once the overload occurs, the machine needs to be stopped immediately, otherwise it will cause serious impact, so it is necessary to install an overload protect...

AI Technical Summary

Problems solved by technology

[0004] In the case of a small model and a low machine running speed, simply using a torque limiter as a safety protection device can basically meet the safety requirements, but for an automatic die-cutting machine with a large format, due to its large load, emergency Under certain circumstances, although the torque limiter can trigger the induction switch action, it often cannot stop the operation of the gripper row 6' immediately, and the gripper row 6' may slide forward for a certain distance due to inertia. Therefore, the torque limiter is suitable for large The safety protection of automatic die-cutting machine is not very reliable

Images