| 摘要 |
In an injection mould, a plastic injection-moulded product is manufactured. The plastic injection-moulded product comprises a tubular body, a neck part and a head part. The injection mould comprises three mould parts, which are displaceable with respect to each other between a closed position and an open position. The first mould part comprises a first mould cavity for producing the neck part and the head part. The second mould part comprises a second mould cavity for producing the tubular body. The third mould part comprises a core body. In the open position, a neck label is arranged in the first mould cavity of the first mould part and a peripheral label is arranged in the second mould part. Subsequently, the mould parts are moved to the closed position to form a closed mould cavity. By supplying plastic, the plastic injection-moulded product is produced. The labels are integrally formed in the plastic injection-moulded product (“in-mould labelling”). |
| 主权项 |
1. A method for producing, in an injection mould, a plastic product comprising a tubular body, a neck part which is connected to an end of the tubular body and a head part which is connected to an end of the neck part facing away from the tubular body, which injection mould comprises:
a first mould part which is provided with a first mould cavity having a wall which corresponds to the shape of the external surface of the neck part and of the head part of the plastic product to be produced, which first mould part is provided with a supply duct for the supply of plastic, which supply duct opens into the first mould cavity, a second mould part which is provided with a second mould cavity having a wall which corresponds to the shape of the external surface of the tubular body of the plastic product to be produced, and a third mould part which is provided with a core body having a wall which corresponds to the shape of the internal surface of the tubular body and to the shape of the internal surface of the neck part and, optionally, to the shape of the internal surface of the head part of the plastic product) to be produced,which method comprises:
moving the first, second and third mould parts of the injection mould apart into an open position to enable placement of a peripheral label in the second mould cavity in the open position of the first, second and third mould parts placing the peripheral label in the second mould cavity, moving the first, second and third mould parts from the open position to a closed position, in which the first, second and third mould parts bear against each other to form a closed mould cavity, supplying plastic via the supply duct of the first mould part to form the plastic product in the closed mould cavity,characterized in that
the peripheral label is placed in the second mould cavity by a label transfer device which is provided with a mandrel for accommodating the peripheral label, and in that
the peripheral label is arranged around a peripheral wall of the mandrel of the label transfer device in a peripheral label-receiving position of the mandrel outside the injection mould,in the open position of the first, second and third mould parts, the mandrel with the peripheral label arranged around the peripheral wall thereof are moved from the peripheral label-receiving position outside the injection mould to a peripheral label-dispensing position in the second mould cavitythe peripheral label is transferred from the peripheral wall of the mandrel to the wall of the second mould cavity in the peripheral label-dispensing position of the mandrel,the mandrel is returned from the peripheral label-dispensing position to the peripheral label-receiving position outside the injection mould, and in that the label transfer device is furthermore provided with a holder for accommodating an annular neck label, and in that,the neck label is arranged on the holder of the label transfer device in a neck label-receiving position of the holder outside the injection mould,in the open position of the first, second and third mould parts the holder with the accommodated neck label are moved from the neck label-receiving position outside the injection mould to a neck label-dispensing position for dispensing the neck label in the first mould cavity of the first mould part,the neck label is transferred from the holder to the first mould cavity in the neck label-dispensing position of the holder, andthe holder is returned from the neck label-dispensing position to the neck label-receiving position outside the injection mould. |
