CN-224222494-U - Stretching cold-recovering bottom die structure

CN224222494UCN 224222494 UCN224222494 UCN 224222494UCN-224222494-U

Abstract

The utility model discloses a stretching cold recovery bottom die structure which comprises an upper bottom plate, a male die, a lower bottom plate, a female die, a material returning plate and a material returning core driven to lift by existing driving equipment, wherein the male die is detachably arranged at the bottom of the upper bottom plate, the female die is detachably arranged on the lower bottom plate, the male die and the female die are coaxially arranged, a through hole is formed in the center of the female die, the material returning core is positioned in the through hole and can move up and down along the through hole, the male die is embedded into the through hole of the female die along with the descending of the upper bottom plate and approaches the material returning core, the male die is lifted along with the upper bottom plate and far away from the female die, the material returning plate is sleeved on the periphery of the male die and can slide along the male die, a telescopic structure for pushing the material returning plate is arranged between the material returning plate and the male die, and a limiting structure for preventing the material returning plate from falling is arranged between the material returning plate and the male die. The mold has simple structure, can ensure the concentricity of the material sheet and the negative sheet, combines the cold composite bottom and the stretching working procedure together, realizes that two working procedures can be realized in one equipment, saves equipment cost and improves efficiency.

Inventors

YE YU
HAO SHENGJIANG
ZHANG XIAOLI
SHI GUIYU
ZHOU LIREN
LIANG ZHILIN

Assignees

新兴县先丰不锈钢制品有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (10)

1. The stretching cold recovery bottom die structure is characterized by comprising an upper die, a lower die, a material returning plate and a material returning core driven by existing driving equipment to lift, wherein the upper die comprises an upper bottom plate and a male die, the male die is detachably arranged at the bottom of the upper bottom plate, the lower die comprises a lower bottom plate and a female die, the female die is detachably arranged on the lower bottom plate, the male die and the female die are coaxially arranged, a through hole is formed in the center of the female die, the material returning core is located in the through hole and can move up and down along the through hole, the male die is embedded into the through hole of the female die along with the lowering of the upper bottom plate and approaches the material returning core, the male die is far away from the female die along with the rising of the upper bottom plate, the material returning plate is sleeved on the periphery of the male die and can slide along the male die, a telescopic structure for pushing the material returning plate is arranged between the material returning plate and the upper bottom plate, and a limiting structure for preventing the material returning plate from falling is arranged between the material returning plate and the male die.
2. The stretching and cooling composite bottom die structure of claim 1, wherein the female die comprises a connecting ring, a connecting plate and an upper pressing plate which are coaxially arranged and are all in an annular structure, the connecting ring is fixed on the lower bottom plate through bolts, the connecting plate is fixed on the connecting ring through bolts, the upper pressing plate is detachably mounted on the connecting plate through bolts, a circle of first annular protrusions are formed on the inner side of the upper pressing plate in an inward protruding mode, holes on the annular inner side of the connecting ring are first through holes, holes on the annular inner side of the connecting plate are second through holes, holes on the annular inner side of the upper pressing plate are third through holes, the diameters of the first through holes, the second through holes and the third through holes are the same, the diameters of hole positions formed on the inner side of the first annular protrusions are smaller than the diameters of the third through holes, and the diameters of the material returning core are formed.
3. The stretching and cooling compound die structure as set forth in claim 1, wherein the limit structure comprises a first annular groove and a second annular protrusion, the first annular groove is formed in the periphery of the upper portion of the male die, the inner side of the material returning plate protrudes inwards for a circle to form the second annular protrusion, and the second annular protrusion is located in the first annular groove and slides up and down along the first annular groove.
4. The stretching and cooling composite bottom die structure of claim 1, wherein the telescopic structure is a spring, a positioning hole is formed in the upper side of the material returning plate, the upper end of the spring is arranged on the upper bottom plate, and the lower end of the spring is sleeved in the positioning hole and is fixed with the material returning plate.
5. The stretching and cooling composite bottom die structure of claim 2, wherein the inner side of the upper side surface of the upper pressing plate is recessed to form a circle of annular positioning groove, the first annular bulge is in transitional connection with the annular positioning groove through an arc curved surface, a material sheet for manufacturing a pot is placed in the annular positioning groove during processing, and the material sheet is pressed down by the male die and enters the through hole of the female die after passing through the hole position of the inner side of the first annular bulge until the bottom surface of the material sheet is in contact with the top surface of the material returning core.
6. The drawing and cooling composite bottom die structure of claim 5, wherein the inner side of the lower part of the material returning plate protrudes downwards to form a circle of baffle ring, the baffle ring is in transitional connection with the outer side edge of the material returning plate through an arc curved surface, and the arc curved surface of the material returning plate is opposite to the arc curved surface of the upper pressing plate.
7. The drawing and cooling composite die structure as claimed in claim 1, wherein the top surface of the material withdrawal core is provided with a die etch for die casting the bottom of the material sheet, and the die etch is formed in a region where the top surface of the material withdrawal core contacts the material sheet.
8. The stretching and cooling compound die structure as claimed in claim 2, wherein the outer diameter of the connecting ring is smaller than the outer diameter of the connecting plate, and the outer diameter of the upper pressing plate is the same as the outer diameter of the connecting plate.
9. The stretching and cooling compound die structure as set forth in claim 2, wherein a circle of second annular grooves is formed on the periphery of the lower portion of the upper pressing plate, a circle of third annular protrusions are formed on the periphery of the connecting plate in an upward protruding mode, and the third annular protrusions are embedded into the second annular grooves when the upper pressing plate is installed above the connecting plate.
10. The drawing and cooling die structure as claimed in claim 1, wherein the upper bottom plate has a ring of fourth annular protrusions protruding from the outer part Zhou Chaowai, and the lower bottom plate has a ring of fifth annular protrusions protruding from the outer part Zhou Chaowai.

Description

Stretching cold-recovering bottom die structure Technical Field The utility model relates to the technical field of workpiece processing dies, in particular to a stretching cold-recovering bottom die structure. Background The bottom type of the aluminum product is mainly divided into a single bottom, a cold composite bottom and a hot composite bottom, and the hot melt injection bottom is made in some special ways, the structure is mainly used on the cold composite bottom product, especially the cold composite bottom stretching product, the forming process of the cold composite bottom stretching aluminum product is optimized, the existing original process is that after the aluminum sheet is subjected to cold composite bottom stretching forming, two sets of dies are needed in two working procedures, the diameter of the aluminum sheet is increased after the two working procedures, one more rounding working procedure is needed, and the two dies are used in the first two working procedures, so that the product has eccentricity and has small influence on the quality of the product because the two dies cannot be used for hundred percent concentricity. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provide a stretching cold-recovering bottom die structure. The stretching and cooling composite bottom die structure comprises an upper die, a lower die, a material returning plate and a material returning core driven by existing driving equipment to lift, wherein the upper die comprises an upper bottom plate and a male die, the male die is detachably arranged at the bottom of the upper bottom plate, the lower die comprises a lower bottom plate and a female die, the female die is detachably arranged on the lower bottom plate, the male die and the female die are coaxially arranged, a through hole is formed in the center of the female die, the material returning core is located in the through hole and can move up and down along the through hole, the male die is embedded into the through hole of the female die along with the lowering of the upper bottom plate and is close to the material returning core, the male die is far away from the female die along with the rising of the upper bottom plate, the material returning plate is sleeved on the periphery of the male die and can slide along the male die, a telescopic structure for pushing the material returning plate is arranged between the material returning plate and the upper bottom plate, and a limiting structure for preventing the material returning plate from falling is arranged between the material returning plate and the male die. The male die and the female die are coaxially arranged, the circle center of a to-be-processed tablet can be ensured to be positioned on the axis of the coaxial center of the male die, the tablet can be accurately positioned, the edges of the tablet and the bottom sheet are ensured to be even and level in the production process, the situation of high and low edges or excessive thickness or excessive thinness can not occur, and the upper bottom plate is fixed on the existing lifting equipment, so that the male die and the material returning plate can slide relatively, and the material returning function is realized. The material returning core is driven by the existing driving equipment to jack up the product after combining the material sheet and the negative film from the bottom, so that material returning and demoulding are realized. The structure combines the cold composite bottom with the stretching working procedure, realizes that two working procedures can be realized in one device, saves the cost of the device, lightens the workload and improves the efficiency. The telescopic structure can provide even material returning force, and the limiting structure can prevent the material returning plate from falling off due to separation from the male die. The female die comprises a connecting ring, a connecting plate and an upper pressing plate which are coaxially arranged and are all in an annular structure, the connecting ring is fixed on the lower bottom plate through bolts, the connecting plate is fixed on the connecting ring through bolts, the upper pressing plate is detachably mounted on the connecting plate through bolts, a circle of first annular protrusions are formed by inwards protruding the inner side of the upper pressing plate, the holes on the annular inner side of the connecting ring are first through holes, the holes on the annular inner side of the connecting plate are second through holes, the holes on the annular inner side of the upper pressing plate are third through holes, the diameters of the first through holes, the second through holes and the third through holes are the same, and jointly form a channel for sliding a material returning core, and the diameters of hole positions formed on the inner side of the first annular protrusions are smaller than the diameter of the