Injection arrangement for a moulding machine and method for operating the same

Patent metadata

Field	Value
Publication number	US-11969927-B2
Application number	US-202117369454-A
Country	US
Kind code	B2
Filing date	Jul 7, 2021
Priority date	Jul 8, 2020
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

An injection arrangement for a moulding machine includes a moulding compound reservoir and an injection unit. The moulding compound reservoir is configured to provide a plasticized mass and to push out the plasticized mass through a discharge opening, and a connecting device is coupled to the discharge opening of the moulding compound reservoir and a feed opening of the injection unit, and is configured to direct the plasticized mass from the moulding compound reservoir to the injection unit. The connecting device includes an articulated element, and a relative movement between the moulding compound reservoir and the injection unit can be performed with the articulated element.

First claim

The invention claimed is:

1. An injection arrangement for a moulding machine, the injection arrangement comprising:
a moulding compound reservoir configured to produce a plasticized mass and to push out the plasticized mass through a discharge opening;
an injection unit comprising a plasticizing screw and/or an injection piston; and
a connecting device coupled to the discharge opening of the moulding compound reservoir and a feed opening of the injection unit, and configured to direct the plasticized mass from the moulding compound reservoir to the injection unit,
wherein the connecting device comprises an articulated element configured to allow a relative movement between the moulding compound reservoir and the injection unit, and
wherein the connecting device includes a degassing device.

2. The injection arrangement according to claim 1 , wherein the moulding compound reservoir is configured as a plasticizing unit.

3. The injection arrangement according to claim 1 , wherein the injection unit further comprises an injection cylinder.

4. The injection arrangement according to claim 1 , wherein the injection unit is mounted to be linearly displaceable along a longitudinal axis.

5. The injection arrangement according to claim 1 , wherein the injection unit comprises a drive mechanism.

6. The injection arrangement according to claim 1 , wherein the moulding compound reservoir is mounted in a stationary manner.

7. The injection arrangement according to claim 1 , wherein the connecting device connects the discharge opening of the moulding compound reservoir to the injection unit so as to be shielded from an environment.

8. The injection arrangement according to claim 1 , wherein at least a section of the connecting device is configured in a tubular manner.

9. The injection arrangement according to claim 1 , wherein the moulding compound reservoir comprises a degassing device.

10. The injection arrangement according to claim 1 , wherein the connecting device has a variable length.

11. The injection arrangement according to claim 10 , wherein the connecting device comprises a telescoping section.

12. The injection arrangement according to claim 1 , wherein the articulated element of the connecting device is a first articulated element, the connecting device further comprising a second articulated element.

13. The injection arrangement according to claim 1 , wherein the articulated element is a ball joint.

14. The injection arrangement according to claim 1 , wherein the articulated element is a flexure bearing.

15. The injection arrangement according to claim 1 , wherein the moulding compound reservoir comprises a recycling device.

16. A moulding machine comprising the injection arrangement according to claim 1 .

17. A method for operating the injection arrangement according to claim 1 , the method comprising:
generating a plasticized mass using the moulding compound reservoir by pushing out the plasticized mass through the discharge opening,
transferring the plasticized mass from the moulding compound reservoir to the injection unit using the connecting device,
compensating for a relative movement between the moulding compound reservoir and the injection unit via the articulated element of the connecting device, and
degassing the plasticized mass transferred through the connecting device using the degassing device of the connecting device.

18. The injection arrangement according to claim 2 , wherein the plasticizing unit comprises a plasticizing screw and/or an extruder screw.

19. The injection arrangement according to claim 5 , wherein the drive mechanism comprises a piston-cylinder unit and/or a spindle drive.

20. The injection arrangement according to claim 7 , wherein the connecting device connects the discharge opening of the moulding compound reservoir to the injection unit in an airtight manner.

Assignees

• Engel Austria Gmbh

Inventors

• Balka Christoph
• Pernkopf Friedrich

Classifications

• B29C45/58 Primary

  Details · CPC title

• B29C45/03

  Injection moulding apparatus (transfer moulding B29C45/02) · CPC title

• B29C45/47

  using screws (B29C45/54 takes precedence) · CPC title

• B29C45/46 Primary

  Means for plasticising or homogenising the moulding material or forcing it into the mould {(combined with mould opening, closing or clamping devices B29C45/70)} · CPC title

• B29C45/48 Primary

  Plasticising screw and injection screw {comprising two separate screws} · CPC title