Blow-moulding device with preloadable attachment for blow moulds

Patent metadata

Field	Value
Publication number	US-9821506-B2
Application number	US-201514716912-A
Country	US
Kind code	B2
Filing date	May 20, 2015
Priority date	May 28, 2014
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A transforming device for transforming plastic preforms into plastic containers, comprising a blow-molding device which forms a cavity inside which the plastic preforms can be transformed into the plastic containers through the application of a flowable medium, wherein the blow-molding device has at least two side parts which are arranged at least indirectly on blow-mold carriers, wherein the side parts are arranged on the blow-mold carriers by an attachment device is provided. The attachment device also has a return which, at least temporarily during a working mode, pushes at least one side part towards the blow-mold carrier on which the side part is arranged.

First claim

The invention claimed is:

1. A transforming device for transforming plastic preforms into plastic containers, comprising a blow-moulding device which forms a cavity inside which the plastic preforms can be transformed into the plastic containers through the application of a flowable medium, wherein the blow-moulding device has at least two side parts which are arranged at least indirectly on blow-mould carriers, wherein the side parts are arranged at least indirectly on the blow-mould carriers by an attachment device, wherein the attachment device also has a return which, at least temporarily during a working mode, pushes at least one side part towards the blow-mould carrier on which said side part is arranged, and wherein the attachment device has a bayonet-type attachment element for attaching the blow-mould part to the blow-mould carrier part.

2. The transforming device according to claim 1 , wherein the transforming device has an advancing device which is suitable and intended for pushing one side part towards the other side part at least temporarily before or during a transforming operation.

3. The transforming device according to claim 2 , wherein the advancing device has, in at least one intermediate space between the blow-mould carrier and the side part assigned thereto, a receiving chamber to which a flowable medium can be applied, as a result of the application of which the blow-mould carrier and the side part assigned thereto can be pushed apart.

4. The transforming device according to claim 1 , wherein the attachment device, in a working mode of the transforming device, allows mechanical play between the blow-mould carrier and the blow-mould part arranged on said blow-mould carrier.

5. The transforming device according to claim 1 , wherein blow-mould carrier shells are attached to the blow-mould carriers by the attachment device and the side parts are arranged on said blow-mould carrier shells, wherein the return preferably pushes at least one blow-mould carrier shell towards the blow-mould carrier on which said blow-mould carrier shell is arranged.

6. The transforming device according claim 1 , wherein at least one blow-mould carrier shell has a first surface facing towards the blow-mould carrier assigned to said blow-mould carrier shell and a second surface facing towards said blow-mould carrier, and both the first surface and the second surface each partially delimit a pressure cushion.

7. The transforming device according to claim 1 , wherein at least one return comprises a spring element.

8. The transforming device according to claim 6 , wherein the spring element is preloaded to push the blow-mould part and/or the blow-mould carrier shell towards the blow-mould carrier part.

9. The transforming device according to claim 1 , wherein the blow-mould carrier shell is held on the blow-mould carrier in a form-fitting and force-fitting manner and/or the blow-mould carrier shell also holds the blow-mould part in a form-fitting and force-fitting manner.

10. The transforming device according to claim 1 , wherein at least one blow-mould carrier shell has channels for conducting a temperature control medium.

11. The transforming device according to claim 1 , wherein there is arranged on at least one blow-mould carrier shell at least one force-deflecting element which diverts away any forces occurring during a transformation process, in particular axial forces on the blow-mould carrier assigned to said blow-mould carrier shell.

12. The transforming device according to claim 1 , wherein at least one mould carrier shell has a V-shaped contour on a first side and a curved contour on a second side located opposite the first side.

13. A method for transforming plastic preforms into plastic containers, comprising the steps of: providing a blow-moulding device which forms a cavity, such that the plastic preforms are transformed into the plastic containers inside said cavity through the application of a flowable medium, providing with the blow-moulding device at least two side parts which are arranged at least indirectly on blow-mould carriers, wherein the side parts are arranged on the blow-mould carriers, wherein the attachment device also has a return and a bayonet-type attachment element for attaching the blow-mould part to the blow-mould carrier part and at least temporarily during a working mode, pushing at least one side part towards the blow-mould carrier on which said side part is arranged.

Assignees

• Krones Ag

Inventors

• Geltinger Florian
• Lindner Maria
• Philipp Thomas
• Brinster Paul

Classifications

• B29C49/56

  Opening, closing or clamping means · CPC title

• B29C2049/563

  Clamping means · CPC title

• B29L2031/712

  Containers; Packaging elements or accessories, Packages (closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418) · CPC title

• B29C2049/4869

  Operations & Transport · mapped topic

• B29C49/12

  Stretching rods · CPC title