CN221289192U - Stamping forming die for small-sized plate-shaped workpiece - Google Patents

Abstract

The small plate-shaped workpiece stamping forming die comprises an upper die plate and a lower die holder, an upper base plate and a fixed plate are sequentially arranged below the upper die plate, a stripper plate is arranged below the fixed plate, the stripper plate is connected with the upper die plate through a contour bolt structure, the contour bolt structure consists of a rectangular spring and a stripper screw, a female die is fixed on the lower die holder, and the upper end of a punch matched with the female die is fixed on the fixed plate and the upper base plate; the inner cavity of the female die is provided with a step, the top piece is positioned in the inner cavity of the female die, a boss matched with the step is arranged on the top piece, a nitrogen spring is arranged in the lower die holder, the lower end of the top piece is arranged at the upper end of the nitrogen spring, the upper end of the top piece is opposite to the lower end of the punch head, the section of the top piece is identical to the shape of a product, a blanking punch head is arranged on the side surface of the punch head, the upper end of the blanking punch head is fixed on the fixed plate and the upper base plate, and a blanking cavity communicated with the blanking punch head is arranged on the female die and the lower die holder. Simple structure, labour saving and time saving, improved work efficiency.

Description

Stamping forming die for small-sized plate-shaped workpiece

Technical Field

The utility model relates to a stamping die, in particular to a stamping forming die for a small-sized plate-shaped workpiece.

Background

At present, a part of a plate-shaped workpiece is processed by a press forming method, and the thickness of the workpiece is required to satisfy the press forming method. The existing stamping die comprises an upper die plate and a lower die seat, an upper base plate and a fixed plate are sequentially arranged below the upper die plate, a stripper plate is arranged below the fixed plate, the stripper plate is connected with the upper die plate through a constant-height bolt structure, the constant-height bolt structure is composed of a rectangular spring and a stripper screw, a female die is fixed on the lower die seat, and the upper end of a punch matched with the female die is fixed on the fixed plate and the upper base plate. During processing, the material sheet is placed on the female die, the upper die plate is driven by the driving mechanism of the stamping equipment to descend, and the punch and the female die cooperate to stamp the material sheet to form a product. The products processed by the method inevitably have obvious blanking collapse angles and burrs, the brightness degree of the peripheral end face of the products is not ideal, the flatness of the products cannot meet the requirements, the quality of the products with high precision requirements cannot be ensured, and the subsequent treatment of the products is time-consuming and labor-consuming.

Disclosure of Invention

The utility model aims to provide the small plate-shaped workpiece stamping forming die which has a simple structure, does not collapse corners or burr after stamping forming is carried out on the plate-shaped workpiece, has flatness and peripheral end face brightness which are easy to reach standards, saves time and labor and improves working efficiency.

The utility model relates to a small plate-shaped workpiece stamping forming die, which comprises an upper die plate and a lower die holder, wherein an upper base plate and a fixed plate are sequentially arranged below the upper die plate, a stripper plate is arranged below the fixed plate, the stripper plate is connected with the upper die plate through a constant-height bolt structure, the constant-height bolt structure consists of a rectangular spring and a stripper screw, a female die is fixed on the lower die holder, and the upper end of a punch matched with the female die is fixed on the fixed plate and the upper base plate; the inner cavity of the female die is provided with a step, the top piece is positioned in the inner cavity of the female die, a boss matched with the step is arranged on the top piece, a nitrogen spring is arranged in the lower die holder, the lower end of the top piece is arranged at the upper end of the nitrogen spring, the upper end of the top piece is opposite to the lower end of the punch head, the section of the top piece is identical to the shape of a product, a blanking punch head is arranged on the side surface of the punch head, the upper end of the blanking punch head is fixed on the fixed plate and the upper base plate, and a blanking cavity communicated with the blanking punch head is arranged on the female die and the lower die holder.

The small-sized plate-shaped workpiece stamping forming die provided by the utility model has the advantages that the punch descends to punch the material sheet on the female die during operation, the nitrogen spring upwards pushes against the top piece, the upper end of the top piece pushes against the lower surface of the material sheet, the top piece descends under the action of the punch during stamping, the nitrogen spring retracts, the material sheet is sheared to form a product, but the punch reaches the bottom dead center, the stamping process is just half, namely, the stamped product is not separated from the material sheet, then the upper die plate ascends, the top piece pushes against the top piece under the action of the nitrogen spring at the moment, the product is pushed back into the material sheet, the product is still positioned in the material sheet after being formed, the boss on the top piece and the step on the female die are just clamped together when the top piece ascends to the top dead center, then the material sheet moves forward, the next product is stamped, and the product formed just from the blanking punch head pushes the material sheet and falls into the blanking cavity. The stamping mode makes the blanking collapse angle of the product smaller than 0.15 without burrs, the peripheral end surface bright band can exceed 90% of the interface, the flatness can reach 0.02, the structure is simple, the time and the labor are saved, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Fig. 2 is an enlarged schematic view of the portion B shown in fig. 1.

Detailed Description

As shown in fig. 1 and 2: the utility model discloses a small plate-shaped workpiece stamping forming die, which comprises an upper die plate 1 and a lower die holder 6, wherein an upper base plate 2 and a fixed plate 3 are sequentially arranged below the upper die plate 1, a stripper plate 4 is arranged below the fixed plate 3, the stripper plate 4 is connected with the upper die plate 1 through a constant-height bolt structure, the constant-height bolt structure is composed of a rectangular spring 9 and a stripper screw 8, a female die 5 is fixed on the lower die holder 6, and the upper ends of punches 12 matched with the female die 5 are fixed on the fixed plate 3 and the upper base plate 2. The cavity of the female die 5 is provided with a step 15, the top piece 10 is positioned in the cavity of the female die 5, the top piece 10 is provided with a boss 16 matched with the step 15, the lower die holder 6 is internally provided with a nitrogen spring 11, the lower end of the top piece 10 is arranged at the upper end of the nitrogen spring 11, the upper end of the top piece 10 is opposite to the lower end of the punch 12, the cross section of the top piece is the same as the shape of a product, the side surface of the punch 12 is provided with a blanking punch 14, the upper end of the blanking punch 14 is fixed on the fixed plate 3 and the upper base plate 2, and the female die 5 and the lower die holder 6 are provided with a blanking cavity 17 communicated with the blanking punch 14.

The during operation drift 12 descends to the tablet 7 on die 5 and punches, nitrogen spring 11 pushes up and leans on top piece 10, top piece 10 upper end pushes up and leans on the below of tablet 7, top piece 10 descends under the effect of drift 12 during punching, nitrogen spring 11 is retracted, tablet 7 is sheared and forms the goods, but the punching process is just half when drift 2 reaches the bottom dead center, punch forming's 13 does not break away from tablet 7, then cope match-plate pattern 1 goes upward, push up and lean on top piece 10 and go up, will 13 top back into tablet 7 under the effect of nitrogen spring 11 at this moment, still be located tablet 7 after making 13 shaping, boss 16 and the step 15 on die 5 on top piece 10 just block together on top piece 10 when top dead center goes up, then tablet 7 goes forward, carry out the stamping forming of next goods, simultaneously the just by blanking drift 14 top piece 7 of preceding shaping, fall into blanking chamber 17. The stamping mode makes the blanking collapse angle of the product smaller than 0.15 without burrs, the peripheral end surface bright band can exceed 90% of the interface, the flatness can reach 0.02, the structure is simple, the time and the labor are saved, and the working efficiency is improved.

Claims (1)

1. The utility model provides a small-size plate-shaped workpiece stamping forming die, including cope match-plate pattern (1) and die holder (6), be equipped with upper padding plate (2), fixed plate (3) below cope match-plate pattern (1) in proper order, be equipped with stripper (4) below fixed plate (3), be connected through the contour bolt structure between stripper (4) and cope match-plate pattern (1), contour bolt structure comprises rectangle spring (9) and discharge screw (8), be fixed with die (5) above die holder (6), punch (12) upper end that matches with die (5) is fixed on fixed plate (3) and upper padding plate (2); the method is characterized in that: the inner cavity of the female die (5) is provided with a step (15), the top piece (10) is positioned in the inner cavity of the female die (5), the top piece (10) is provided with a boss (16) matched with the step (15), the lower die holder (6) is internally provided with a nitrogen spring (11), the lower end of the top piece (10) is arranged at the upper end of the nitrogen spring (11), the upper end of the top piece (10) is opposite to the lower end of the punch (12) and the cross section is the same as the shape of a product, the side surface of the punch (12) is provided with a blanking punch (14), the upper end of the blanking punch (14) is fixed on the fixed plate (3) and the upper base plate (2), and the female die (5) and the lower die holder (6) are provided with a blanking cavity (17) communicated with the blanking punch (14).