Closing unit of an injection-molding machine, said injection-molding machine having columns

Abstract

The invention relates to a closing unit (25) of an injection-molding machine (1), said injection-molding machine having columns (3), in particular a closing unit (25) of a two-late injection-molding machine (1), said closing unit comprising at least one clamping lock device (2), by means of which a column (3) can be fastened with respect to one of the tool clamping plates (4; 5) at any positions along a travel path of the tool clamping plates (4; 5), wherein the clamping lock device (2) has at least one clamping apparatus (12) for locking the at least one column (3) with respect to a clamping jacket (13) in a clamping manner. The invention is characterized in that the clamping apparatus (12) is slidable along the travel path within the clamping jacket (13) together with the column (3) in the released state and a clamping force (Fk) directed radially outward with respect to a column longitudinal axis (3a) can be effected between the clamping jacket (13) and the clamping apparatus (12) by means of the clamping apparatus (12) for the purpose of clamping.

Description

technical field [0001] The invention relates to a closing unit of an injection molding machine with a column according to the preamble of claim 1 . Background technique [0002] It is known in the prior art, for example, to equip closing units for double-plate injection molding machines with short-stroke cylinders, such as pressure pads, in order to generate the closing force, and to implement mechanically between the support and the mold for the transmission of the closing force. Locking between clamping plates. In this case, in particular locking by means of a positive fit is common, wherein the strut has teeth in certain regions, into which the locking device can be folded or inserted, so that the mold clamping plate and the A form-fit connection is produced between the struts. [0003] Such hydrodynamic principles are established and proven as standard in high closure force situations. In the area of ​​low closing forces, such a system has a cost disadvantage, since a...

AI Technical Summary

Problems solved by technology

However the disadvantage is that due to the necessary high oil volume (long oil column) a significant disadvantage in terms of energy consumption has to be endured

[0006] A disadvantage in such a clamping device is that various kinds of impurities such as water, cooling water, dirt, grease, parting agents and the like may reach between the clamping sleeve and the part to be clamped due to the movement of the pillar. between the strut areas, whereby an unintended loss of friction or excessive wear between the clamping sleeve and the struts may occur

Such clamping heads have the same disadvantages as described above for WO 2010 / 109374 A1

Risk of contamination of the friction surfaces between the clamping sleeve and the corresponding surface of the strut

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