| CPC B29C 45/4225 (2013.01) [B29C 45/261 (2013.01); B29C 2045/7214 (2013.01); B29K 2105/258 (2013.01); B29K 2995/0094 (2013.01)] | 13 Claims |
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1. An injection moulding machine, comprising an injection moulding tool for producing preforms,
wherein the injection moulding tool includes:
a first injection moulding tool plate configured as a core plate;
a second injection moulding tool plate configured as a cavity plate;
a removal plate for removing preforms from the core plate; and
a third injection moulding tool plate configured as an after-treatment plate,
wherein each of the first injection moulding tool plate and the second injection moulding tool plate include a plurality of handling elements arranged in columns and rows, where a distance r1 between adjacent handling elements within the rows is greater than a distance s1 between adjacent handling elements within the columns, where the distance s1 is less than 50 mm,
wherein the cavity plate and the core plate are movable back and forth relative to one another between a closed position and an open position,
wherein, in the closed position, the plurality of handling elements of the core plate configured as cores are inserted into the plurality of handling elements of the cavity plate configured as cavities, whereby moulding spaces are formed between cores on the one hand and cavities on the other hand, where a concave portion of a contour of the moulding spaces corresponds to an outer contour of the preforms to be produced and a convex contour of the moulding spaces corresponds to an inner contour of the preforms to be produced,
wherein the removal plate comprises receiving sleeves,
wherein the removal plate can be moved back and forth between an outer position in which the removal plate is not arranged between the cavity plate and the core plate and at least two removal positions in which the removal plate is arranged between the cavity plate and the core plate,
wherein, in the after-treatment plate, handling elements are removal elements for removing the preforms from the removal plate,
wherein the third injection moulding tool plate has a plurality of handling elements arranged in columns and rows, wherein a distance r2 between adjacent handling elements within the rows is greater than a distance s2 between adjacent handling elements within the columns, wherein the distance s2 is less than 50 mm,
wherein the preforms to be produced by the injection moulding machine are PET preforms,
wherein the injection moulding machine is configured for simultaneous production of a plurality of PET preforms and to apply to the cavity plate and the core plate, when the cavity plate and the core plate are in the closed position, a closing force of less than 30 kN per PET preform,
wherein the injection moulding machine comprises four frame members arranged on four vertices of a rectangle, and the handling elements are arranged between the four frame members,
wherein:
the clearance between two frame members arranged on adjacent vertices of the rectangle is less than 1000 mm, and at least 136 handling elements are arranged on the core plate as well as on the cavity plate,
or
the clearance between two frame members arranged on adjacent vertices of the rectangle is less than 800 mm, and at least 120 handling elements are arranged on the core plate as well as on the cavity plate,
or
the clearance between two frame members arranged on adjacent vertices of the rectangle is less than 750 mm, and at least 88 handling elements are arranged on the core plate as well as on the cavity plate,
wherein each of the first injection moulding tool plate and the second injection moulding tool plate comprises a work surface having a surface content F,
wherein all handling elements are arranged either within the work surface or on a boundary of the work surface, and
wherein a number of handling elements is t and a ratio
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