Toggle type punch press

Abstract

The invention relates to a toggle type punch press, and in particular to a toggle type punch press in which the load distribution of a drive unit is uniform, stable power transmission is achieved, and consumable replacement is achieved by combining a plunger with a replaceable adjustment nut. The toggle type punch press is characterized in that the upper end of an upper link and the lower end of a lower link are rotatably connected to an upper link pin and a lower link pin correspondingly, and the lower end of the upper link, the upper end of the lower link, and one end of a connecting link are rotatably connected to a center link pin correspondingly; and the connection link is composed of a link ring part with one end connected to the center link pin, an eccentric ring part with the other end connected to an eccentric part, and a rod part connecting the link ring part and the eccentric ring part, the link ring part is composed of a first link ring part and a second link ring part of a symmetrical structure, and the eccentric ring part is composed of a first eccentric ring part and a second eccentric ring part of a symmetrical structure.

Description

technical field [0001] The present invention relates to a toggle punch, and more specifically, to a toggle punch in which the load of the driving part is distributed uniformly and stable power transmission is realized, and the plunger is combined with a replaceable adjusting nut to realize replacement of consumables. Background technique [0002] Among the mechanical punching machines, the toggle punching machine is generally suitable for precision compression processing, embossing, extrusion, forging, etc. because the upper die touches the lower die softly for a long time when the product is punched. [0003] A toggle punch press is also called a toggle punch press, which has a frame, a liftable slider mounted on the frame, and a driving device for generating and applying a driving force to lift the slider. [0004] The driving device has a motor arranged on the frame, a flywheel connected to the motor through a belt, a connecting link connected to the flywheel at one end a...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the existing toggle punch is that although the moving speed of the slider is slow when it is lowered, it does not reach the level of improving the molding quality, and the moving speed of the slider when it is not related to the molding quality is also slowed down and increased. Overall operating time, resulting in reduced productivity

[0007] And, the shortcoming of existing toggle punch press is that the operation of connecting link and link mechanism requires too wide operating space

[0008] In addition, in the operation structure of the connecting link and the eccentric block of the conventional toggle punch press, the connecting link connected to the eccentric shaft is fastened on only one side, so the fastening force based on the connecting link is weak, and it will be damaged when used for a long time. Weakening of power transmission due to weakening of the fastening force of the connecting link connected to the eccentric shaft

[0009] In addition, according to the existing toggle punch press, the crankless toggle mechanism consisting of the upper link, the lower link, and the plunger that supports the up and down reciprocating movement of the bar screw has wear and tear on the fastened part of the bar screw and the plunger. And the cumbersome need to replace the plunger

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