Rotor manufacturing device
AssigneeToyota Boshoku Kabushiki Kaisha
InventorMasaki SUGIYAMA
Life of this patent
Estimating the term…
Abstract
A rotor manufacturing device includes a first die, a second die, and a gate plate. The gate plate and the second die are provided with a passage for allowing resin injected from a nozzle to flow into accommodation holes when the first die and the second die are clamped. The passage includes bend portions, upstream portions located upstream of the bend portions, and downstream portions located downstream of the bend portions. Resin traps for retaining the resin at an initial stage of injection from the nozzle are each formed at a position adjacent to the corresponding bend portion in the gate plate and aligned with a linear extension of the corresponding upstream portion in the downstream direction.
Claims4
1-5. (canceled)
A rotor manufacturing device, comprising a first die, a second die, and a gate plate, wherein
- a core including multiple accommodation holes each accommodating a magnet is disposed between the first die and the second die,
- the gate plate is disposed between the core and the second die,
- the gate plate and the second die are provided with a passage for allowing resin injected from a nozzle to flow into the accommodation holes of the core when the first die and the second die are clamped,
- the rotor manufacturing device fixes the magnets to the core by filling the accommodation holes with the resin,
- the passage includes:
- one or more bend portions that change a direction in which the resin flows;
- an upstream portion located upstream of the bend portion in the flow of the resin;
- and
- a downstream portion located downstream of the bend portion in the flow of the resin,
- the gate plate includes one or more resin traps in which the resin at an initial stage of injection from the nozzle is retained,
- the resin trap is formed at a position adjacent to the bend portion in the gate plate and aligned with a linear extension of the upstream portion in the downstream direction, the passage includes:
- a sprue extending linearly and connected to the nozzle;
- and
- multiple runners branching from the sprue,
- the one or more bend portions include a first bend portion located at a junction between the sprue and the runners,
- each runner includes two gate portions, each of the two gate portions being connected to a corresponding one of the multiple accommodation holes,
- each of the runners branches at an end on a side opposite to the end close to the first bend portion so as to be connected to the two gate portions,
- the one or more bend potions include second bend portions each formed by a section of each runner that is connected to the two gate portions,
- the two second bend portions of each runner are located downstream of the branching section of the runner, and
- the one or more resin traps include resin traps formed at positions respectively corresponding to the two second bend portions of each runner.
Dependencies are inferred from the claim text.