Synchronous running safeguard for transfer stations for devices for handling containers, and a device and a method for blow-molding containers

Patent metadata

Field	Value
Publication number	US-9925713-B2
Application number	US-201414914172-A
Country	US
Kind code	B2
Filing date	Aug 5, 2014
Priority date	Sep 4, 2013
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A synchronous running safeguard for transfer stations or devices for handling containers, in particular for handling bottle-like containers made of glass or plastic, having a first and a second rotary element, which each have holding elements for the containers and each have a motor drive. The rotary elements are disposed in relation to one another such that the containers can be transferred in a transfer area from one of the first holding elements to one of the second holding elements. The rotary elements, each rotationally connected, have a control element having engagement elements, and the control elements are in meshing engagement with one another. The control elements are disposed in such a way that, during operation the control elements are interengaged without contact during the rotary movement of the rotary elements and that, in the event of a fault, the control elements are interengaged with contact.

First claim

The invention claimed is:

1. A synchronous operation safeguard for transfer stations for devices for handling containers, comprising: a first and a second rotary element, each rotary element being provided with receiving elements for the containers and in each case comprises a motor drive, wherein the rotary elements are arranged relative to one another so that the containers in a transfer region can be transferred from one of the receiving elements of the first rotary element to one of the receiving elements of the second rotary element, wherein the rotary elements in each case rotationally connected comprise a control element with engagement elements, wherein the control elements are in meshing engagement with one another, wherein the control elements are arranged so that during operation during rotary movement of the rotary elements the rotary elements are in engagement without contact and in that they are in engagement with contact in the event of a fault.

2. The synchronous operation safeguard as claimed in claim 1 , wherein the engagement elements are teeth, pins, protrusions or depressions.

3. The synchronous operation safeguard as claimed in claim 1 , wherein the control element is a gear wheel and/or a pin wheel.

4. The synchronous operation safeguard as claimed in claim 1 , wherein the engagement elements are arranged to have a gap therebetween during operation, wherein the gap is provided so that the receiving elements are without contact in the event of a fault.

5. A device for blow-molding containers made of a thermoplastic material, comprising: at least two treatment stations with tools for receiving and holding preforms; at least one transfer device for transfer of the preforms from one of the treatment stations to a further one of the treatment stations with tools, which are designed for removing the preforms from the treatment station, for the transport of the preforms to the further treatment station and for passing the preforms on to the further treatment station, wherein at least one of the treatment stations and/or the at least one transfer device comprise at least one mechanical control device for defining movement of the tools, wherein the tools in their movement relative to one another have an engagement region and are arranged relative to one another so that movement of the tools during normal operation takes place without contact; and individual drives for driving the treatment stations and/or the transfer device, the individual drives being synchronized in terms of control, wherein the tools of at least one of the treatment stations and/or of the transfer device are movable out of the engagement region in event of a fault through a movement of at least one section of the control device.

6. The device as claimed in claim 5 , wherein the treatment stations include a heating device for heating the preforms and a blowing device for forming containers from the preforms.

7. The device as claimed in claim 5 , wherein the mechanical control device is a cam control.

8. The device as claimed in claim 7 , wherein a section of the cam control is moveable corresponding to the engagement region, wherein the movement is a vertical movement.

9. The device as claimed in claim 7 , wherein the control device includes a drive for moving the earn control.

10. The device as claimed in claim 9 , wherein the drive includes pneumatic cylinders.

11. The device as claimed in claim 5 , wherein the tools are mandrels or grippers.

12. The device as claimed in claim 7 , wherein multiple cam sections are provided, movement of the cam sections being mechanically coupled to one another.

13. The device as claimed in claim 5 , wherein the treatment stations are a heating device, a blowing device, a sterilization device, a cooling device, an additional heating device, cleaning device, labeling device, and/or filling device.

14. The device as claimed in claim 5 , further comprising a synchronous operation safeguard for transfer stations for devices for handling containers, comprising: a first and a second rotary element, each rotary element being provided with receiving elements for the containers and in each case comprises a motor drive, wherein the rotary elements are arranged relative to one another so that the containers in a transfer region can be transferred from one of the receiving elements of the first rotary element to one of the receiving elements of the second rotary element, wherein the rotary elements in each case rotationally connected comprise a control element with engagement elements, wherein the control elements are in meshing engagement with one another, wherein the control elements are arranged so that during operation during rotary movement of the rotary elements the rotary elements are in engagement without contact and in that they are in engagement with contact in the event of a fault.

15. A method for securing tools for receiving and for transporting preforms or containers made of a thermoplastic material in devices for blow-molding with at least two treatment stations, and with at least one transfer device for transferring the preforms from a treatment station to a further treatment station with tools, with which the preforms are removed from the treatment station, are transported to a further treatment station and transferred to the further treatment station, the method comprising the steps of: moving the treatment stations and/or or the transfer device with individual drives that are synchronized in terms of control, wherein the tools in their movement relative to one another have an engagement region; arranging the tools relative to one another so that the movement of the tools takes place without contact during a normal operation; and controlling movement of the tools by a mechanical control so that the tools of at least one of the treatment stations and/or of the transfer device are moved in event of a fault out of the engagement region in by a movement of at least one section of the control device.

16. The method as claimed in claim 15 , wherein the mechanical control is a cam control, wherein a section of the cam control is moved corresponding to the engagement region.

17. The method as claimed in claim 16 , wherein the movement is a vertical movement.

Assignees

• Khs Corpoplast Gmbh

Inventors

• Linke Michael
• Litzenberg Michael
• Baumgarte Rolf
• Lewin Frank

Classifications

• B29C49/42085

  holding inside the neck · CPC title

• B29C49/42079

  using vacuum for gripping · CPC title

• B29C49/36 Primary

  rotatable about one axis · CPC title

• B29K2701/12

  Thermoplastic materials · CPC title

• B65G47/846

  Star-shaped wheels or wheels equipped with article-engaging elements · CPC title