CN220426550U - Transformer shell blank stamping die - Google Patents

Abstract

The utility model provides a stamping die for a transformer shell blank, which comprises an upper die holder and a lower die holder, wherein a male die is arranged below the upper die holder, a female die is arranged above the lower die holder, a rebound plate capable of moving up and down is arranged on the female die, and a material leakage hole is arranged in the center of the lower die holder.

Description

Transformer shell blank stamping die

Technical Field

The utility model relates to the field of transformer shell processing, in particular to a transformer shell blank stamping die.

Background

The transformer mainly aims at changing voltage, the working principle is simple, namely, the voltage of alternating current is changed through electromagnetic induction, common transformers are used for converting high voltage into household voltage and converting household voltage into voltage required by electronic products, for example, a computer transformer is generally arranged in a computer power supply, the shell of the transformer is generally made of metal through stamping, and a forming die is needed during stamping.

In the prior art, after stamping, the metal plate is mainly convenient for subsequent installation because the general transformer shell is in a shape with a groove, but the shell is not easy to come out when demolding, so that the processing efficiency is low, and therefore, the transformer shell forming die is provided for solving the problems.

Disclosure of Invention

The utility model mainly aims to provide a stamping die for a transformer shell blank, which solves the problem that the shell is not easy to come out when the transformer shell is demoulded after being stamped.

In order to solve the technical problems, the utility model adopts the following technical scheme: the stamping die comprises an upper die base and a lower die base, wherein a male die is arranged below the upper die base, a female die is arranged above the lower die base, a rebound plate capable of moving up and down is arranged on the female die, and a material leakage hole is further formed in the center of the lower die base.

In the preferred scheme, the middle of the male die is provided with a forming area, a plurality of punching columns are arranged around the forming area, and the edge of the male die is provided with an upper cutting edge.

In the preferred scheme, the die center is equipped with the shaping region, and shaping region is equipped with a plurality of punching press holes all around, is equipped with a plurality of tensioning holes in the die inside.

In a preferred scheme, a cavity can be formed after the die and the male die are clamped.

In the preferred scheme, the top of die holder is equipped with down cuts the limit, and the centre of cutting down cuts the limit is equipped with the weeping hole, still is equipped with a plurality of guide holders on the die holder.

In the preferred scheme, a plurality of guide posts are arranged on the upper die holder.

In the preferred scheme, the center of rebound board is equipped with the centre bore, and the centre bore edge is equipped with a plurality of tensioning posts, and tensioning post and tensioning hole coaxial heart are laid, are equipped with strong extension spring between tensioning post and the tensioning hole.

In the preferred scheme, the female die and the male die are made of hard alloy materials.

In the preferred scheme, the male die, the female die and the central hole are coaxially arranged, and the concentricity is less than or equal to 0.06mm.

The utility model provides a stamping die for a transformer shell blank, which has the following beneficial effects:

1. the utility model provides a stamping die for a transformer shell blank, wherein a strong spring is arranged in a female die, and a rebound plate is arranged above the female die, so that a stamping part can be pushed out in time after stamping is finished, an operator can take out the transformer shell blank more conveniently, the operation time is saved, and the working efficiency is improved.

2. The utility model provides a stamping die for a transformer shell blank, which is characterized in that a cutting edge is respectively arranged on a male die and a lower die seat, so that the preliminary cutting work of a plurality of stamping parts is finished when the stamping is finished, the cutting work is saved for the subsequent welding process, and the beat time of the whole working flow is prolonged.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is an exploded view of the present utility model stamping die;

FIG. 2 is an exploded view of the present stamping die from another perspective;

FIG. 3 is a cross-sectional view of the present utility model prior to closing the die;

FIG. 4 is a cross-sectional view of the present utility press die after closing;

FIG. 5 is a cross-sectional view of the present utility tensioner aperture;

fig. 6 is a cross-sectional view of a stamping of the present utility model.

In the figure: an upper die holder 1; a guide post 101; a positioning frame 102; a male die 2; upper clipping edge 201; punching a column 202; stamping 3; screw holes 301; a first step 302; a second step 303; a third step 304; welding allowance 305; a rebound board 4; a central bore 401; a peripheral hole 402; tightening the post 403; a female die 5; punching a hole 501; tensioning aperture 502; a mounting hole 503; a strong tension spring 504; a lower die holder 6; a lower clipping edge 601; a weep hole 602; guide seats 603; a cavity 7.

Detailed Description

Example 1

As shown in fig. 1-5, a stamping die for a transformer shell blank comprises an upper die holder 1 and a lower die holder 6, wherein a male die 2 is arranged below the upper die holder 1, a female die 5 is arranged above the lower die holder 6, a rebound plate 4 capable of moving up and down is arranged on the female die 5, and a material leakage hole 602 is further formed in the center of the lower die holder 6.

In a preferred scheme, a forming area is arranged in the middle of the male die 2, a plurality of punching columns 202 are arranged around the forming area, and an upper cutting edge 201 is arranged at the edge of the male die 2.

In a preferred embodiment, a molding area is provided in the center of the female die 5, a plurality of punching holes 501 are provided around the molding area, and a plurality of tightening holes 502 are provided inside the female die 5.

In a preferred embodiment, the cavity 7 can be formed after the die 5 is clamped with the male die 2.

In the preferred scheme, a lower cutting edge 601 is arranged above the lower die holder 6, a material leakage hole 602 is arranged in the middle of the lower cutting edge 601, and a plurality of guide seats 603 are further arranged on the lower die holder 6.

In a preferred embodiment, the upper die holder 1 is provided with a plurality of guide posts 101.

In a preferred embodiment, the center of the rebound board 4 is provided with a central hole 401, a plurality of tensioning columns 403 are arranged on the edges of the central hole 401, the tensioning columns 403 and the tensioning holes 502 are coaxially arranged, and a strong tension spring 504 is arranged between the tensioning columns 403 and the tensioning holes 502.

In the preferred scheme, the female die 5, the male die 2 and the lower die holder 6 are made of hard alloy materials, and can be medium chromium tool steel, medium carbon alloy steel, high-speed steel, matrix steel, hard alloy and steel bonded hard alloy.

In the preferred scheme, the male die 2, the female die 5 and the central hole 401 are coaxially arranged, and the concentricity is less than or equal to 0.06mm.

As shown in fig. 6, the edge of the processed stamping part is provided with a welding allowance 305, the center of the stamping part is provided with a first step 302, the periphery of the first step 302 is provided with a plurality of screw holes 301, the lower part of the first step 302 is provided with a second step 303, the lower part of the second step 303 is provided with a third step 304, and the center of the third step 304 is provided with a stamped pattern, so that one-step stamping forming is needed.

The working principle of the stamping die for the transformer shell blank is as follows: the upper die holder 1 is arranged on a punching head of a punching machine, the male die 2 is arranged in the positioning frame 102 of the upper die holder 1, the lower die holder 6 is arranged on a stress platform, the female die 5 is arranged on the lower die holder 6, a plate is placed between the male die 2 and the female die 5, an operator starts the punching machine, the punching head presses downwards, the male die 2 and the female die 5 extrude the plate into the shape of the cavity 7, the punching column 202 on the male die 2 punches through the plate, the residual material is punched into the punching hole 501 of the female die 5, the material leakage hole 602 of the lower die holder 6 falls, the upper cutting edges 201 and the lower cutting edges 601 around are cut, the plate is cut and formed, after the punching is completed, the punching head rises, the strong tension spring 504 in the rebound plate 4 springs up the punching part 3 in the female die 5, and the operator takes out the punching part, so that the punching is completed.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (9)

1. A stamping die for a transformer shell blank is characterized in that: the die comprises an upper die holder (1) and a lower die holder (6), wherein a male die (2) is arranged below the upper die holder (1), a female die (5) is arranged above the lower die holder (6), a rebound plate (4) capable of moving up and down is arranged on the female die (5), and a material leakage hole (602) is further formed in the center of the lower die holder (6).

2. The stamping die for a transformer housing blank according to claim 1, wherein: the middle of the male die (2) is provided with a forming area, a plurality of punching columns (202) are arranged around the forming area, and the edge of the male die (2) is provided with an upper cutting edge (201).

3. The stamping die for a transformer housing blank according to claim 1, wherein: the center of the female die (5) is provided with a forming area, a plurality of punching holes (501) are formed in the periphery of the forming area, and a plurality of tensioning holes (502) are formed in the female die (5).

4. The stamping die for a transformer housing blank according to claim 1, wherein: after the die (5) and the male die (2) are clamped, a die cavity (7) can be formed.

5. The stamping die for a transformer housing blank according to claim 1, wherein: the upper side of die holder (6) is equipped with down and cuts limit (601), and the centre of cutting limit (601) down is equipped with weeping hole (602), still is equipped with a plurality of guide holders (603) on die holder (6).

6. The stamping die for a transformer housing blank according to claim 1, wherein: a plurality of guide posts (101) are arranged on the upper die holder (1).

7. The stamping die for a transformer housing blank according to claim 1, wherein: the center of the rebound board (4) is provided with a center hole (401), a plurality of tensioning columns (403) are arranged on the edges of the center hole (401), the tensioning columns (403) and the tensioning holes (502) are arranged coaxially, and a strong tension spring (504) is arranged between the tensioning columns (403) and the tensioning holes (502).

8. The stamping die for a transformer housing blank according to claim 1, wherein: the female die (5) and the male die (2) are made of hard alloy materials.

9. A transformer housing blank stamping die as recited by any one of claims 1-8, characterized by: the male die (2), the female die (5) and the central hole (401) are arranged coaxially, and concentricity is smaller than or equal to 0.06mm.