Modular mold system

Patent metadata

Field	Value
Publication number	US-9844902-B2
Application number	US-201514882686-A
Country	US
Kind code	B2
Filing date	Oct 14, 2015
Priority date	Oct 16, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A modular molding system having a mold base assembly for assembling an interchangeable mold insert assemblage. The assembled mold insert assemblage defines an internal cavity for forming a molded object. Each mold insert assemblage can be disengaged from the mold base assembly and exchanged with a different mold insert assemblage having an internal cavity having different dimensions.

First claim

What is claimed is:

1. A modular molding system, comprising:
a stationary mold base having a base engagement feature;
a transitory mold base movable along a first axis intersecting the stationary mold base;
a base mold insert having a sliding engagement feature, wherein the base mold insert is slidable along a second axis to engage the sliding engagement feature to the base engagement feature; and
a transitory mold insert having a releasable feature engagable to the transitory mold base, wherein the transitory mold base is movable along the first axis to engage the transitory mold base to the releasable feature of the transitory mold insert and engage the transitory mold base to the transitory mold insert;
wherein the transitory mold base moves the transitory mold insert along the first axis between a closed position in which the transitory mold insert is engaged to the base mold insert and an open position in which the transitory mold insert is disengaged from the base mold insert.

2. The modular molding system of claim 1 , wherein the second axis is perpendicular to the first axis.

3. The modular molding system of claim 1 , wherein the releasable feature of the transitory mold insert is releasable from the transitory mold base when the transitory mold insert is positioned in the closed position.

4. The modular molding system of claim 1 , wherein the base mold insert defines a base mold cavity and the transitory mold insert defines a secondary mold cavity;
wherein the base mold cavity and the secondary mold cavity cooperate to define an internal mold cavity when the transitory mold insert is positioned in the closed position.

5. The modular molding system of claim 4 , further comprising:
at least one side mold base movable along a third axis, the side mold base having a second base engagement feature; and
at least one side mold insert having a second sliding engagement feature slidable parallel to the second axis to engage the second base engagement feature;
wherein the side mold base moves the side mold insert along the third axis between a closed position in which the side mold insert is engaged to the base mold insert and an open position in which the side mold insert is disengaged from the base mold insert.

6. The modular molding system of claim 5 , wherein the third axis is perpendicular to the first axis.

7. The modular molding system of claim 5 , wherein each side mold insert defines a side mold cavity, wherein the base mold cavity, the secondary mold cavity and each side mold cavity cooperate to define the internal mold cavity when the side mold insert is positioned in the closed position.

8. The modular molding system of claim 5 , wherein the stationary mold base defines at least one elongated track parallel to the third axis;
wherein each side mold base includes a slider slidably engagable to the elongated track such that the elongated track guides the side mold bases as the side mold base moves along the third axis.

9. The modular molding system of claim 5 , further comprising:
at least one positioning assembly corresponding to each side mold base and operable to move the side mold base along the third axis.

10. The modular molding system of claim 5 , wherein the transitory mold base includes at least one positioning pin insertable into a corresponding guide port of the stationary mold base as the transitory mold insert is moved into the closed position.

11. The modular molding system of claim 10 , wherein the side mold base includes at least one alignment hole that aligns with the guide port of the stationary mold base when the side mold base is positioned in the closed position for receiving the at least one positioning pin.

12. The modular molding system of claim 1 , further including a carrier assembly having at least one carrier engagement feature;
wherein the carrier assembly is positionable to align the carrier engagement feature with the base engagement feature such that the base mold insert is slidable along the second axis to transition the base mold insert from the stationary mold base to the carrier assembly.

13. The modular molding system of claim 12 , wherein the carrier assembly includes at least one side wall for receiving the base mold insert and the transitory mold insert positioned in the closed position.

14. The modular molding system 12 , wherein the transitory mold insert is engagable to the base mold insert when positioned in the closed position such that sliding the base mold insert along the second axis also slides the transitory mold insert onto the carrier assembly with the base mold insert.

15. A method of molding a molded object, comprising:
providing a stationary mold base having a base engagement feature;
aligning a transitory mold base with the stationary mold base along a first axis;
sliding a sliding engagement feature of a base mold insert along a second axis to engage the base mold insert to the stationary mold base, wherein the base mold insert defines a base mold cavity;
moving the transitory mold base along the first axis into engagement with a transitory mold insert, wherein the transitory mold insert defines a first mold cavity;
moving the transitory mold insert along the first axis into a closed position, where the transitory mold insert is engaged with the base mold insert such that the base mold cavity and the first mold cavity cooperate to define an internal mold cavity;
injecting a hardening composition into the internal mold cavity; and
moving the transitory mold insert out of engagement with the base mold insert.

16. The method of claim 15 , further comprising:
releasing the transitory mold insert from the transitory mold base when the transitory mold insert is positioned in the closed position.

17. The method of claim 15 , wherein the base mold insert defines a base mold cavity and the transitory mold insert defines a secondary mold cavity;
wherein the base mold cavity and the secondary mold cavity cooperate to define the internal mold cavity when the transitory mold insert is positioned in the closed position.

18. The method of claim 17 , further comprising:
providing at least one side mold base having a second base engagement feature;
sliding a side mold insert parallel to the second axis to engage the side mold insert to the side mold base; and
moving the side mold base along a third axis between a closed position in which the side mold insert is engaged to the base mold insert and an open position in which the side mold insert is disengaged from the base mold insert.

19. The method of claim 18 , wherein each side mold insert defines a side mold cavity, wherein the base mold cavity, the secondary mold cavity and each side mold cavity cooperate to define the internal mold cavity when the side mold insert is positioned in the closed position.

20. The method of claim 18 , further comprising:
positioning a carrier assembly having an insert engagement feature in alignment with the stationary mold base; and
sliding the base mold insert along the second axis from the stationary mold base to the carrier assembly.

21. The method of claim 20 , further comprising:
moving the transitory mold base along the first axis out of engagement with the transitory mold insert while the transitory mold insert remains in the closed position;
wherein sliding the base mold insert along the second axis from the stationary mold base also slides the transitory mold base out of alignment with the transitory mold base.

Assignees

• Zimmer Inc

Inventors

• Holderman Nicholas R
• Pohler Jeremy J
• Klein Robert E
• Gidley Thom E
• Stump Devon
• Brown Michael

Classifications

• B29C45/2673 Primary

  with exchangeable mould parts, e.g. cassette moulds (B29C45/1756 takes precedence) · CPC title

• B29C45/2675

  Mounting of exchangeable mould inserts · CPC title