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US 2021/0170664 A1Published application
Device for producing containers by blow moulding
AssigneeKhs Corpoplast GmbH
InventorsDieter KLATT, Thorsten HERKLOTZ, Werner LESINSKI, Günther GODAU, Jens-Uwe HAUBENSCHILD
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Abstract
The invention relates to a device for producing containers (22) by blow molding, with at least one temperature-controllable blow mold (21) held by a mold holder (20), namely with a bottom insert held by a bottom mold carrier and/or with mold inserts held by mold half carriers, and is characterized by an inductive heating device, which indirectly heats the bottom insert and/or the mold inserts by means of induction.
Claims28
1-15. (canceled)
16:
- A device for producing containers by blow molding comprising:
- at least one temperature-controllable blow mold held by a mold holder, wherein the blow mold and the mold holder include a bottom mold insert held by a bottom mold carrier and/or mold half inserts held by mold half carriers;
- and
- an inductive heating device for indirectly heating the bottom mold insert and/or the mold half inserts by means of induction.
1 more element
17:
- The device according to claim 16, wherein the mold holder includes at least one inductor.
18:
- The device according to claim 17, wherein the mold holder includes a plurality of inductors, which are arranged at a distance to each other.
19:
- The device according to claim 18, wherein the plurality of inductors are arranged in a matrix with two or more inductors in a circumferential direction and two or more inductors in a longitudinal direction of the mold holder.
20:
- The device according to claim 17, wherein the at least one inductor has at least one coil with a coil axis at a right angle to an inner wall of the mold holder.
21:
- The device according to claim 18, wherein each of the plurality of inductors has at least one coil with a coil axis at a right angle to an inner wall of the mold holder.
22:
- The device according to claim 17, wherein an inner wall of the mold holder is provided with a recess for accommodating the at least one inductor.
23:
- The device according to claim 18, wherein an inner wall of the mold holder is provided with a plurality of recesses, each of said plurality of recesses for accommodating a respective one of the plurality of inductors.
24:
- The device according to claim 17, wherein the mold holder and/or the blow mold are provided with at least one adapter configured to be heated inductively by the inductor.
25:
- The device according to claim 18, wherein the mold holder and/or the blow mold are provided with a plurality of adapters, which are arranged at a distance to each other and are configured to be heated by the plurality of inductors.
26:
- The device according to claim 19, wherein the mold holder and/or the blow mold are provided with a plurality of adapters that are configured to be heated by the plurality of inductors arranged in the matrix.
27:
- The device according to claim 24, wherein the adapter forms a part of the inner wall of the mold holder or a part of the outer wall of the blow mold.
28:
- The device according to claim 25, wherein the plurality of adapters form a part of the inner wall of the mold holder or a part of the outer wall of the blow mold.
29:
- The device according to claim 24, wherein the adapter is comprised of a ferromagnetic material.
30:
- The device according to claim 25, wherein the plurality of adapters are comprised of a ferromagnetic material.
31:
- The device according to claim 16, wherein the mold holder on its inner wall, or the blow mold on its outer wall, has at least one adapter layer configured to be inductively heated.
32:
- The device according to claim 31, wherein the adapter layer is comprised of a ferromagnetic material.
33:
- The device according to claim 16, wherein the mold holder has at least a heat insulating area on its inner wall.
34:
- The device according to claim 17, wherein the mold holder has at least a heat insulating area on its inner wall, said heat insulating area comprising an insulating layer that covers an area between adjacent inductors.
35:
- The device according to claim 16, wherein the mold holder and/or the blow mold are comprised of a non-ferromagnetic material.
36:
- The device according to claim 35, wherein the non-ferromagnetic material is aluminum.
37:
- The device according to claim 16, wherein the inductive heating device is provided for the mold halves and the device further comprises a coolant circuit for the bottom mold.
38:
- The device according to claim 26, wherein individual inductors of the plurality of inductors are controlled for different heating outputs.
39:
- The device according to claim 38, wherein the individual inductors are controlled for different heating outputs in groups.
40:
- A blowing machine for producing containers by blow molding, with multiple devices according to claim 16.
41:
- The blowing machine according to claim 40, wherein the multiple devices are arranged on a rotary driven blowing wheel.
42:
- A method for producing containers by blow molding, wherein the containers are made from preforms in a blow mold, and wherein the blow mold is temperature-controlled before, during and/or after the forming of the containers, wherein the blow mold is indirectly heated by means of induction using a device according to claim 16.