The invention relates to a device for producing a spacer having a stem mold (1) which has an inner space (2), wherein the inner space (2) is accessible via a proximal opening (3) and wherein the stem mold (1) has a proximal wall (4) which peripherally delimits the proximal opening (3) of the stem mold (1), a head mold (5) which has in the interior thereof a hollow space (6), wherein the hollow space (6) has a spherical surface-shaped inner surface (7) and is accessible via a distal opening (8), wherein the head mold (5) has a distal wall (9) which peripherally delimits the distal opening (8) of the head mold (5), a metal core (10) which has a stem part (12), a head part (14) and a flange (16), wherein the flange (16) projects out from the metal core (10), is arranged between the stem part (12) and the head part (14) and has a proximal surface (18) and a distal surface (20), wherein the stem mold (1) and the stem part (12) are shaped such that the stem part (12) is arranged in the inner space (2), when the proximal wall (4) is resting against the distal surface (20), and wherein the head mold (5) and the head part (14) are shaped such that the head part (14) is arranged in the hollow space (6), when the distal wall (9) is resting against the proximal surface (18). The invention also relates to a set with such a device and to a method for producing spacers with such a device.

The invention relates to a device for producing a spacer having a stem mold (1) which has an inner space (2), wherein the inner space (2) is accessible via a proximal opening (3) and wherein the stem mold (1) has a proximal wall (4) which peripherally delimits the proximal opening (3) of the stem mold (1), a head mold (5) which has in the interior thereof a hollow space (6), wherein the hollow space (6) has a spherical surface-shaped inner surface (7) and is accessible via a distal opening (8), wherein the head mold (5) has a distal wall (9) which peripherally delimits the distal opening (8) of the head mold (5), a metal core (10) which has a stem part (12), a head part (14) and a flange (16), wherein the flange (16) projects out from the metal core (10), is arranged between the stem part (12) and the head part (14) and has a proximal surface (18) and a distal surface (20), wherein the stem mold (1) and the stem part (12) are shaped such that the stem part (12) is arranged in the inner space (2), when the proximal wall (4) is resting against the distal surface (20), and wherein the head mold (5) and the head part (14) are shaped such that the head part (14) is arranged in the hollow space (6), when the distal wall (9) is resting against the proximal surface (18). The invention also relates to a set with such a device and to a method for producing spacers with such a device.

An injection moulding tool with at least one cavity for producing thin-walled, container-like injection-moulded products, in particular cups, tubes, tube heads, vials, bottle blanks or syringes. The injection moulding tool comprises a die holding plate, which has at least one cavity-forming die; a core holding plate, which has at least one core unit with a cavity-forming core; at least one stripping ring for stripping the injection-moulded product off the at least one core, with the at least one stripping ring arranged between the core holding plate and the die holding plate; and at least one adjustable core centring device for the fine alignment of the at least one core in the at least one die. The stripping ring is held in a floating manner in a stripping plate, which is arranged between the die holding plate and the core holding plate; and the at least one adjustable core centring device is arranged between the core unit and the core holding plate.

An injection moulding tool with at least one cavity for producing thin-walled, container-like injection-moulded products, in particular cups, tubes, tube heads, vials, bottle blanks or syringes. The injection moulding tool comprises a die holding plate, which has at least one cavity-forming die; a core holding plate, which has at least one core unit with a cavity-forming core; at least one stripping ring for stripping the injection-moulded product off the at least one core, with the at least one stripping ring arranged between the core holding plate and the die holding plate; and at least one adjustable core centring device for the fine alignment of the at least one core in the at least one die. The stripping ring is held in a floating manner in a stripping plate, which is arranged between the die holding plate and the core holding plate; and the at least one adjustable core centring device is arranged between the core unit and the core holding plate.

A shutter device includes blades rotatable to interrupt an air flow therethrough, and first and second frames supporting the blades. One end of a blade in a longitudinal direction thereof includes a first support rotatably supported by the first frame, and a second support rotatably supported by the second frame. The first support and the second support are disposed along a widthwise direction of the blade. Another end of the blade in the longitudinal direction thereof includes a third support rotatably supported by the first frame, and a fourth support rotatably supported by the second frame. The third support and the fourth support are disposed along the widthwise direction of the blade.

A shutter device includes blades rotatable to interrupt an air flow therethrough, and first and second frames supporting the blades. One end of a blade in a longitudinal direction thereof includes a first support rotatably supported by the first frame, and a second support rotatably supported by the second frame. The first support and the second support are disposed along a widthwise direction of the blade. Another end of the blade in the longitudinal direction thereof includes a third support rotatably supported by the first frame, and a fourth support rotatably supported by the second frame. The third support and the fourth support are disposed along the widthwise direction of the blade.

A slide piece driving mechanism includes a side surface guiding portion, a shaft portion, and stopper releasing means. The side surface guiding portion is disposed at a movable side mold to guide a side surface of a slide piece to be slidably movable. The shaft portion of a stopper is disposed at the side surface guiding portion. When the slide piece reaches an upper end position, the shaft portion engages with a stopper hole of the slide piece to prevent the slide piece from falling from the upper end position due to own weight. The stopper releasing means releases the engagement of the shaft portion of the stopper with the stopper hole to allow the slide piece from falling from the upper end position due to its own weight.

A slide piece driving mechanism includes a side surface guiding portion, a shaft portion, and stopper releasing means. The side surface guiding portion is disposed at a movable side mold to guide a side surface of a slide piece to be slidably movable. The shaft portion of a stopper is disposed at the side surface guiding portion. When the slide piece reaches an upper end position, the shaft portion engages with a stopper hole of the slide piece to prevent the slide piece from falling from the upper end position due to own weight. The stopper releasing means releases the engagement of the shaft portion of the stopper with the stopper hole to allow the slide piece from falling from the upper end position due to its own weight.

A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.