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US 11,154,921 B2Granted
Manufacturing device for laminated iron core
AssigneeToyota Boshoku Kabushiki Kaisha
InventorsHajime Banno, Shinpei Ono
Life of this patent
Estimating the term…
Abstract
A device for manufacturing a laminated iron core includes a die and a punch configured to punch iron core pieces out of a thin-plate workpiece, a squeeze ring in which the iron core pieces are laminated, and a back-pressure device configured to apply back pressure to the laminated iron core pieces from a side opposite to the punch in a forward-backward direction of the punch. The back-pressure device includes a support body configured to move in the forward-backward direction, a biasing member configured to bias the laminated iron core pieces toward the punch, a drive device having an output shaft, and a conversion mechanism configured to convert rotary motion of the output shaft into linear motion of the support body in the forward-backward direction.
Claims12
A manufacturing device for a laminated iron core, the manufacturing device comprising:
- a die and a punch configured to punch iron core pieces out of a thin-plate workpiece;
- a squeeze ring in which the iron core pieces are laminated;
- and
- a back-pressure device configured to apply back pressure to the laminated iron core pieces from a side opposite to the punch in a forward-backward direction of the punch, wherein
- the laminated iron core pieces are swaged using the punch and the back-pressure device, thereby manufacturing the laminated iron core, and
- the back-pressure device comprises:
- a drive device comprising an output shaft rotated about an orthogonal direction that is orthogonal to the forward-backward direction;
- a base configured to move in the forward-backward direction of the punch, the base including an opening extending through the base along the orthogonal direction and extending along a width direction which is orthogonal to the orthogonal direction and the forward-backward direction;
- a spring supported by the base and configured to bias the laminated iron core pieces toward the punch;
- a reduction drive coupled to the output shaft of the drive device;
- a joint coupled to an output shaft of the reduction drive;
- a shaft coupled to the joint, wherein a rotational axis of the output shaft of the drive device, a rotational axis of the output shaft of the reduction drive, a rotational axis of the joint, and a rotational axis of the shaft are coaxially located on a same axis;
- an eccentric rod coupled to the shaft, the eccentric rod being eccentric to the axis and being rotatable along a circular orbit about the axis in response to the rotary motion of the output shaft of the drive device;
- and
- a transmission that rotationally supports the eccentric rod and is configured to transmit force from the eccentric rod to the base, the transmission being accommodated in the opening of the base, a height of the transmission in the forward-backward direction being slightly lower than a height of the opening in the forward-backward direction to restrict relative movement of the transmission in the opening in the forward-backward direction and a width of the transmission in the width direction is smaller than a width of the opening in the width direction, such that the transmission pushes the base to move in the forward-backward direction in response to the rotation of the eccentric rod about the axis, and is moved in the opening in the width direction in response to the rotation of the eccentric rod about the axis.
12 more elements
A manufacturing device for a laminated iron core, the manufacturing device comprising:
- a die and a punch configured to punch iron core pieces out of a thin-plate workpiece;
- a squeeze ring in which the iron core pieces are laminated;
- and
- a back-pressure device configured to apply back pressure to the laminated iron core pieces from a side opposite to the punch in a forward-backward direction of the punch, wherein
- the laminated iron core pieces are swaged using the punch and the back-pressure device, thereby manufacturing the laminated iron core, and
- the back-pressure device comprises:
- a drive device comprising an output shaft rotated about an orthogonal direction that is orthogonal to the forward-backward direction;
- a base configured to move in the forward-backward direction of the punch, the base including an opening extending through the base along the orthogonal direction and extending along a width direction which is orthogonal to the orthogonal direction and the forward-backward direction;
- a spring supported by the base and configured to bias the laminated iron core pieces toward the punch;
- a reduction drive coupled to the output shaft of the drive device;
- a joint coupled to an output shaft of the reduction drive;
- a shaft coupled to the joint, wherein a rotational axis of the output shaft of the drive device, a rotational axis of the output shaft of the reduction drive, a rotational axis of the joint, and a rotational axis of the shaft are coaxially located on a same axis;
- and
- a converter configured to convert rotary motion of the output shaft of the drive device into linear motion of the base in the forward-backward direction, wherein
- the converter comprises:
- an eccentric rod coupled to the shaft, the eccentric rod being eccentric to the axis and being rotatable along a circular orbit about the axis in response to the rotary motion of the output shaft of the drive device;
- and
- a transmission that rotationally supports the eccentric rod and is configured to transmit force from the eccentric rod to the base, the transmission being accommodated in the opening of the base, a height of the transmission in the forward-backward direction being slightly lower than a height of the opening in the forward-backward direction to restrict relative movement of the transmission in the opening in the forward-backward direction and a width of the transmission in the width direction is smaller than a width of the opening in the width direction, such that the transmission pushes the base to move in the forward-backward direction in response to the rotation of the eccentric rod about the axis, and is moved in the opening in the width direction in response to the rotation of the eccentric rod about the axis.
15 more elements
Dependencies are inferred from the claim text.