NECKING AND FLANGING APPARATUS AND BATTERY MANUFACTURING EQUIPMENT
A necking and flanging apparatus includes: an inner mold; a necking piece, disposed around the inner mold, where the necking piece is movable along a radial direction of the inner mold, and the necking piece is configured to coordinate with the inner mold to form a necked portion on a housing; and a press-fit piece, disposed around the inner mold, where the press-fit piece is movable along an axial direction of the inner mold, and the press-fit piece is configured to fit the necking piece to press and flatten the flanged portion of the housing.
1 . A necking and flanging apparatus, comprising:
an inner mold;
a necking piece, disposed around the inner mold, wherein the necking piece is movable along a radial direction of the inner mold, and the necking piece is configured to coordinate with the inner mold to form a necked portion on a housing; and
a press-fit piece, disposed around the inner mold, wherein the press-fit piece is movable along an axial direction of the inner mold, and the press-fit piece is configured to coordinate with the necking piece to press and flatten the flanged portion of the housing.
2 . The necking and flanging apparatus according to claim 1 , wherein the press-fit piece is ring-shaped, and the press-fit piece is sleeved on the inner mold.
3 . The necking and flanging apparatus according to claim 2 , wherein:
outer peripheral surfaces of the inner mold comprise a first outer peripheral surface, a second outer peripheral surface, and a transition surface;
a diameter of the first outer peripheral surface is larger than a diameter of the second outer peripheral surface;
the transition surface connects the first outer peripheral surface and the second outer peripheral surface;
the necking piece is configured to coordinate with the second outer peripheral surface; and
the press-fit piece is sleeved on the first outer peripheral surface.
4 . The necking and flanging apparatus according to claim 1 , wherein the press-fit piece is slidably connected to the inner mold along the axial direction of the inner mold.
5 . The necking and flanging apparatus according to claim 1 , further comprising:
a first driving assembly, configured to drive the press-fit piece to move along the axial direction of the inner mold.
6 . The necking and flanging apparatus according to claim 5 , wherein the first driving assembly is mounted on the inner mold.
7 . The necking and flanging apparatus according to claim 1 , wherein the press-fit piece comprises a first surface oriented toward the necking piece along the axial direction of the inner mold, and the first surface is a flat face perpendicular to the axial direction of the inner mold.
8 . The necking and flanging apparatus according to claim 1 , wherein the necking piece is one of a plurality of necking pieces of the necking and flanging apparatus, and the plurality of necking pieces are distributed along a circumferential direction of the inner mold.
9 . The necking and flanging apparatus according to claim 1 , further comprising:
a second driving assembly, configured to drive the necking piece to move along the radial direction of the inner mold.
10 . The necking and flanging apparatus according to claim 1 , wherein the necking piece is a necking roller, and the necking and flanging apparatus further comprises:
a third driving assembly, configured to drive the necking roller to revolve around the inner mold.
11 . The necking and flanging apparatus according to claim 1 , further comprising:
a fixing mechanism, disposed opposite to the inner mold along the axial direction of the inner mold, and configured to fix the housing.
12 . The necking and flanging apparatus according to claim 1 , wherein the inner mold comprises a gas duct, and the gas duct is configured to feed a high-pressure gas into the housing.
13 . The necking and flanging apparatus according to claim 12 , wherein the gas duct runs through the inner mold along the axial direction of the inner mold.
14 . A piece of battery manufacturing equipment, wherein the equipment comprises the necking and flanging apparatus according to claim 1 , and the necking and flanging apparatus is configured to neck and flange the housing of a battery.