Mold clamping device, injection molding machine, and offset load inspection method for mold clamping device
AssigneeThe Japan Steel Works, Ltd.
InventorSouma Mitani
Life of this patent
Estimating the term…
Abstract
A mold clamping device includes at least two mold platens and a plurality of rod-shaped members connecting two of the mold platens. An offset load detector is provided for at least one of the rod-shaped members at a connection portion between the at least one of the rod-shaped members and at least one of the mold platens. The offset load detector is configured to detect loads at two or more different detection positions, respectively, in a circumferential direction of the at least one of the rod-shaped members.
Claims20
A mold clamping device comprising:
- at least two mold platens;
- and
- a plurality of rod-shaped members, the plurality of rod-shaped members connecting two of the mold platens, tension being generated in the plurality of rod-shaped members during mold clamping,
- wherein an offset load detector is provided for at least one of the rod-shaped members at at least one of connection portions between the at least one of the rod-shaped members and the mold platens, and
- wherein the offset load detector is configured to detect loads at two or more different detection positions, respectively, in a circumferential direction of the at least one of the rod-shaped members.
An injection molding machine comprising:
- a mold clamping device configured to clamp a mold;
- and
- an injection device configured to inject an injected material,
- wherein the mold clamping device comprises:
- at least two mold platens;
- and
- a plurality of rod-shaped members,
- wherein the plurality of rod-shaped members connects two of the mold platens, tension being generated in the plurality of rod-shaped members during mold clamping,
- wherein an offset load detector is provided for at least one of the rod-shaped members at at least one of connection portions between the at least one of the rod-shaped members and the mold platens, and
- wherein the offset load detector is configured to detect loads at two or more different detection positions, respectively, in a circumferential direction of the at least one of the rod-shaped members.
An offset load inspection method for a mold clamping device,
- the mold clamping device comprising:
- at least two mold platens;
- and
- a plurality of rod-shaped members, the plurality of rod-shaped members connecting two of the mold platens, tension being generated in the plurality of rod-shaped members during mold clamping,
- the method comprising:
- at at least one of connection portions between at least one of the rod-shaped members and the mold platens, detecting loads at two or more detection positions, respectively, in a circumferential direction of at least one of the rod-shaped members;
- monitoring a difference between the detected loads;
- and
- in a case a difference between the detected loads exceeds a threshold set in advance, determining that there is an abnormality.
Dependencies are inferred from the claim text.