CN114951072A - Stamping and drawing die - Google Patents

Abstract

The invention belongs to the technical field of stamping dies, in particular to a stamping and drawing die, comprising a lower concave die and an upper convex die, wherein the upper convex die is arranged on the upper end of the opposite side of the lower concave die and is fixedly connected with a support plate; A sliding plate, the two sliding plates are respectively slidably connected to both sides of the supporting plate, and a scraper is hinged on the side of the sliding plate away from the supporting plate; a reset is fixed between the two sliding plates a spring; a placement slot, the placement slot is opened at the bottom of the lower concave die cavity, and the support plate is fitted with the placement slot when the support plate moves to the bottom of the lower concave die cavity; two parts of the placement slot There are side grooves on the side; the invention solves the problem that in the process of stamping and drawing, after the metal material is continuously drawn and bent, metal particles and slag are easily attached to the surface of the working part, so that the surface of the workpiece obtained by stamping and drawing is relatively uneven. Large scratches and scratches affect the quality of the workpiece.

Description

A stamping and drawing die

technical field

The invention belongs to the technical field of stamping dies, in particular to a stamping and drawing die.

Background technique

Stamping is a pressure processing method that uses a die installed on a press to apply pressure to a material at room temperature to separate or plastically deform it to obtain the required parts.

Drawing is a stamping process that turns straight wool or process parts into a curved surface. The curved surface is mainly formed by extending the material located at the bottom of the punch and the upper part of the blank holder;

In the process of stamping and drawing, after the metal material is continuously drawn and bent, metal particles and scum are easily attached to the surface of the working part. When the surface of the metal material is in contact with the working surface, friction is generated with the metal particles and scum, which makes the stamping Large scratches and scratches appear on the surface of the drawn workpiece, which affects the quality of the workpiece. At the same time, after the stamping and drawing is completed, the process of separating the workpiece from the mold is also troublesome.

Based on this, the present invention designs a stamping and drawing die to solve the above-mentioned technical problems.

SUMMARY OF THE INVENTION

In order to make up for the deficiency, in the process of stamping and drawing, after the metal material is continuously drawn and bent, metal particles and slag are easily attached to the surface of the working part, which makes the surface of the workpiece obtained by stamping and drawing appear larger scratches and scratches. Scratches affect the quality of the workpiece. The present invention provides a stamping and drawing die.

The technical solution adopted by the present invention to solve the technical problem is as follows: a stamping and drawing die according to the present invention comprises a lower concave die and an upper punch, and the upper punch is arranged on the opposite side of the lower die, include:

an electric telescopic rod, the electric telescopic rod is installed in the center of the bottom of the lower die, and a support plate is fixedly connected to the upper end of the electric telescopic rod;

A sliding plate, two sliding plates are respectively slidably connected to both sides of the supporting plate, a scraper is hinged on the side of the sliding plate away from the supporting plate; a return spring is arranged between the two sliding plates ;

a placement slot, the placement slot is opened at the bottom of the lower die cavity, and the support plate is fitted with the placement slot when the support plate moves to the bottom of the lower die cavity; both sides of the placement slot are There are side slots.

Preferably, the stamping and drawing die also includes:

a cavity, the cavity is opened in the middle of the support plate, and the two sliding plates are slidably connected in the cavity;

a piston, the two pistons are respectively fixed on the adjacent side of the sliding plate, and the return spring is fixed between the two pistons;

an air guide tube, one end of the air guide tube is communicated with the middle of the cavity, the scraper is provided with an air storage cavity at one end away from the support plate, and the other end of the air guide tube is communicated with the air storage cavity;

The air hole is opened at the lower end of the scraper, and the air hole is communicated with the air storage cavity.

Preferably, a wiper is hinged at one end of the scraper away from the support plate, a torsion spring is sleeved at the hinge of the scraper, and a side of the scraper close to the wiper is provided with an empty slot.

Preferably, an airbag is fixedly connected to the inner side of the hollow groove, a hole is formed at the lower end of the airbag, and the hole communicates with the air hole.

Preferably, a groove is formed on the side of the side groove away from the center of the lower die, the upper end of the groove is hinged with a convex block, and a torsion spring is sleeved at the hinge joint of the convex block, and the convex block A cleaning plate is fixedly connected to the lower end of the .

Preferably, the air holes are arranged obliquely downward.

Preferably, the air holes are arranged in a cone shape with a diameter gradually decreasing from top to bottom.

Preferably, balls are arranged at the lower end of the scraper to rotate toward the side wall of the lower die.

Preferably, a through hole is formed in the middle of the cleaning plate.

Preferably, the lower end surface of the through hole is inclined toward the groove.

The beneficial effects of the present invention are as follows:

1. A kind of stamping and drawing die of the present invention, compared with the traditional technical scheme, the present invention cleans the metal particles and scum on the working surface of the lower die by the scraper before the stamping and drawing, Avoid scratches and abrasions when the material comes into contact with the surface of the lower die during the drawing process.

2. A stamping and drawing die according to the present invention drives the piston to move to the middle of the cavity through the sliding plate, squeezes the air in the middle of the cavity, and the squeezed air enters the scraper through the air duct, and then Blowing out through the air holes, the gas blown out of the air holes blows the slag particles scraped by the scraper, so that the slag particles fall into the side grooves more smoothly, and at the same time, the slag particles are not easy to adhere to the scraper.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the three-dimensional structure diagram of the present invention;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is a partial enlarged view at B in Fig. 1;

In the picture: 1. Lower die; 2. Upper punch; 3. Electric telescopic rod; 4. Support plate; 5. Sliding plate; 6. Scraper; 7. Placing slot; 8. Side slot; 9. Cavity ; 10, piston; 11, airway; 12, air chamber; 13, air hole; 14, wiper plate; 15, empty groove; 16, air bag; 17, groove; 18, bump; 19, cleaning plate; 20 , ball; 21, through hole; 22, return spring.

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

As shown in FIGS. 1 to 3 , a stamping and drawing die according to the present invention includes a lower die 1 and an upper punch 2 , and the upper punch 2 is arranged on the opposite side of the lower die 1 ,include:

An electric telescopic rod 3, the electric telescopic rod 3 is installed in the center of the bottom of the lower die 1, and a support plate 4 is fixedly connected to the upper end of the electric telescopic rod 3;

A sliding plate 5, the two sliding plates 5 are respectively slidably connected to both sides of the supporting plate 4, and a scraper 6 is hinged on the side of the sliding plate 5 away from the supporting plate 4; the two sliding plates A return spring 22 is provided between 5;

A placement slot 7 is opened at the bottom of the cavity of the lower die 1, and the support plate 4 is fitted with the placement slot 7 when the support plate 4 moves to the bottom of the cavity of the lower die 1; the Both sides of the placement slot 7 are provided with side slots 8;

When working, in the initial state, the support plate 4 is located on the upper surface of the cavity of the lower die 1, and the scraper 6 is in contact with the side wall of the cavity of the lower die 1; The upper surface of the mold 1; and then control the electric telescopic rod 3 to shrink to drive the support plate 4 to move downward. During the downward movement of the support plate 4, the scraper 6 moves down along the side wall of the lower die 1, and the scraper 6 moves downward. Scrape off the slag particles on the arc-shaped side wall of the lower die 1; when the scraper 6 moves downward, the distance between the support plate 4 and the arc-shaped side wall of the lower die 1 is reduced, so that the concave The side wall of the die 1 squeezes the scraper 6 to push the sliding plate 5 to slide toward the center of the support plate 4, and when the workpiece is being processed, the surface of the workpiece will be coated with lubricating oil, and the lubricating oil on the workpiece will be coated on the lower die. 1, so as to reduce the friction force of the cavity inner wall of the lower die 1; thus, the scraper 6 can slide down smoothly against the cavity inner wall of the lower die 1; when the sliding plate 5 is on the support plate 4 When sliding, the return spring 22 is compressed; when the support plate 4 moves to the upper end of the placement groove 7, the scrapers 6 on both sides drive the scraped slag particles into the side groove 8, and the scraper 6 also enters the side groove 8. Inside, the support plate 4 is then fitted with the placement groove 7 to form a plane; the upper punch 2 is then controlled to move the punching material downward to complete the drawing process in the lower die 1; The telescopic rod 3 extends upward, the electric telescopic rod 3 pushes the support plate 4 to move upward, and the support plate 4 demolds the material, which facilitates the mold taking after stamping; in the next work, the electric telescopic rod 3 is extended again to drive The support plate 4 moves upward, and when the scraper 6 is separated from the side groove 8, the sliding plate 5 slides to both sides of the support plate 4 under the action of the elastic potential energy released by the return spring 22;

In the present invention, the scraper cleans the metal particles and scum on the working surface of the lower die 1 before punching and drawing, so as to avoid scratches and scratches when the material contacts the surface of the lower die 1 during the drawing process Case.

As an embodiment of the present invention, the stamping and drawing die also includes:

A cavity 9, the cavity 9 is opened in the middle of the support plate 4, and the two sliding plates 5 are slidably connected in the cavity 9;

The piston 10, the two pistons 10 are respectively fixed on the adjacent side of the sliding plate 5, and the return spring 22 is fixed between the two pistons 10;

Air duct 11, one end of the air duct 11 communicates with the middle of the cavity 9, the scraper 6 is provided with an air storage cavity 12 at one end away from the support plate 4, and the other end of the air duct 11 is connected to the air duct 11. The air storage cavity 12 is communicated;

Air hole 13, the air hole 13 is opened at the lower end of the scraper 6, and the air hole 13 communicates with the air storage cavity 12;

During operation, during the downward movement of the support plate 4, the sliding plate 5 drives the piston 10 to move to the middle of the cavity 9, squeezing the air in the middle of the cavity 9, and the squeezed air enters the scraper through the air duct 11. Inside the plate 6, it is blown out through the air holes 13, and the gas blown from the air holes 13 blows the slag particles scraped by the scraper 6, and the strength of the gas blown out from the air holes 13 makes the slag particles along the side wall of the lower die 1 more smoothly. Sliding into the side groove 8, at the same time, the slag particles are not easy to adhere to the scraper 6; when the scraper 6 enters the side groove 8, the sliding plate 5 drives the piston 10 to slide in the direction of the middle of the cavity 9; when the support plate 4 moves When the upper end of the lower die 1 is reached, the sliding plate 5 slides to both sides of the support plate 4 under the action of the elastic potential energy released by the return spring 22, and the outside air enters the cavity 9 through the air duct 11, and then the next cleaning is performed. Work.

As an embodiment of the present invention, a wiper 14 is hinged at one end of the scraper 6 away from the support plate 4 , a torsion spring is sleeved at the hinge of the wiper 14 , and the scraper 6 is close to the One side of the wiper 14 is provided with an empty slot 15;

When working, by setting the wiper 14, after the scraper 6 scrapes off the slag particles on the side wall of the lower die 1, the wiper 14 cleans the side wall twice, so that the lower die can be guaranteed before the punching and drawing. The arc-shaped side wall of 1 is cleaner, so as to ensure that the arc-shaped surface of the material after stamping and drawing is smoother and smoother; when the lower end of the scraper 6 enters the side groove 8, the scraper 14 enters the side groove 8 with the scraper 6. , under the pressing action of the side wall of the side slot 8, the wiper 14 rotates into the empty slot 15; when the next work, the wiper 6 drives the wiper 14 out of the side slot 8, and the wiper 14 is under the action of the torsion spring. The lower part is separated from the empty groove 15, and the next cleaning work is continued; the cleanliness of the working surface of the stamping and drawing die is further ensured.

As an embodiment of the present invention, an airbag 16 is fixedly connected to the inner side of the cavity 15 , and a hole is formed at the lower end of the airbag 16 , and the hole communicates with the air hole 13 ;

During operation, by setting the airbag 16, the wiper 14 squeezes the airbag 16 during the process of entering the cavity 15, and the gas in the airbag 16 is discharged into the air hole 13 through the hole, and then passes through the air hole 13 to the side groove 8. The slag particles are blown off; when the wiper plate 14 is separated from the hollow groove 15, the airbag 16 loses the pressing of the wiper plate 14. Since the material of the airbag 16 is mostly elastic materials such as rubber, when the wiper plate 14 does not squeeze the airbag 16 When pressed, the airbag 16 is elastically reset, the airbag 16 returns to the inflated state, and the air inside the airbag 16 returns to the initial state.

As an embodiment of the present invention, a groove 17 is formed on the side of the side groove 8 away from the center of the lower die 1 . The upper end of the groove 17 is hinged with a convex block 18 . A torsion spring is sleeved at the hinge, and a cleaning plate 19 is fixedly connected to the lower end of the projection 18;

During operation, in the initial state, the bump 18 is located outside the groove 17, and the cleaning plate 19 is located inside the groove 17; during the downward movement of the wiper 14 in the side groove 8, the lower end of the wiper 14 first cleans the bump 18. Squeeze, the bump 18 rotates in the direction of the groove 17 to drive the cleaning plate 19 to rotate in the direction away from the groove 17, so that the cleaning plate 19 is located outside the groove 17, and the cleaning plate 19 is in the process of continuing downward movement of the cleaning plate 19. Clean the surface of the wiper plate 14; after the wiper plate 14 continues to move downward and detaches from the bump 18, the bump 18 returns to its initial state under the action of the torsion spring, and the bump 18 is located outside the groove 17 and contacts the upper end of the scraper 6 ; After the end of a punching and drawing, the electric telescopic rod 3 is extended to drive the support plate 4 to move upward to drive the wiper 14 to move upward, and the upper end of the wiper 14 squeezes the bump 18 again when it contacts the bump 18, The cleaning plate 19 cleans the wiper plate 14 in the opposite direction twice to ensure the cleanliness of the wiper plate 14, thereby ensuring the cleanliness of the lower die 1 when the material is punched and drawn.

As an embodiment of the present invention, the air holes 13 are disposed obliquely downward.

The air hole 13 is arranged in a cone shape whose diameter gradually decreases from top to bottom;

During operation, by setting the air hole 13 in a downwardly inclined cone, the air hole 13 is aligned with the side wall of the lower die 1, so that the slag particles adhering to the side wall can be better blown up.

As an embodiment of the present invention, a ball 20 is provided at the lower end of the scraper 6 to rotate toward the side wall of the lower die 1;

During operation, by setting the balls 20, in the process of the scraper 6 entering the side groove 8, the friction force between the side of the scraper 6 away from the center of the lower die 1 and the side of the upper end face of the side groove 8 is reduced, and on the one hand, the friction force is reduced. The wear of the lower die 1, on the other hand, enables the scraper 6 to move down smoothly along the arcuate sidewall of the lower die 1; it reduces the situation that the scraper 6 abuts against the arcuate sidewall of the lower die 1.

As an embodiment of the present invention, a through hole 21 is formed in the middle of the cleaning plate 19 .

The lower end surface of the through hole 21 is inclined and disposed toward the groove 17;

During operation, by setting the inclined through hole 21, the cleaning plate 19 cleans the surface of the wiper plate 14 during the downward movement of the wiper plate 14 along the side groove 8, and the slag particles generated by cleaning pass through the inclined through hole 21. It falls from the other side of the cleaning plate 19 into the side groove 8 , so that the slag particles cleaned from the wiping plate 14 will not accumulate on the surface of the cleaning plate 19 .

Claims (10)

1. A stamping and drawing die, comprising a lower die (1) and an upper punch (2), the upper punch (2) being arranged on the opposite side of the lower die (1), characterized in that: include: an electric telescopic rod (3), the electric telescopic rod (3) is installed in the center of the bottom of the lower die (1), and a support plate (4) is fixedly connected to the upper end of the electric telescopic rod (3); A sliding plate (5), the two sliding plates (5) are respectively slidably connected to both sides of the supporting plate (4), and the side of the sliding plate (5) away from the supporting plate (4) is hinged with a A scraper (6); a return spring (22) is arranged between the two sliding plates (5); A placement groove (7), the placement groove (7) is opened at the bottom of the cavity of the lower die (1), when the support plate (4) moves to the bottom of the cavity of the lower die (1) and The placement groove (7) is fitted; side grooves (8) are provided on both sides of the placement groove (7). 2. A stamping and drawing die according to claim 1, characterized in that: the stamping and drawing die further comprises: a cavity (9), the cavity (9) is opened in the middle of the support plate (4), and the two sliding plates (5) are slidably connected in the cavity (9); A piston (10), the two pistons (10) are respectively fixed on the adjacent side of the sliding plate (5), and the return spring (22) is fixed between the two pistons (10) ; An air duct (11), one end of the air duct (11) is communicated with the middle of the cavity (9), and an air storage cavity ( 12), the other end of the air conduit (11) is communicated with the air storage cavity (12); An air hole (13), the air hole (13) is opened at the lower end of the scraper (6), and the air hole (13) communicates with the air storage chamber (12). 3. A stamping and drawing die according to claim 1 or 2, characterized in that: one end of the scraper (6) away from the support plate (4) is hinged with a wiper (14), the wiper (14) A torsion spring is sleeved at the hinge joint of the plate (14), and an empty groove (15) is provided on the side of the scraper (6) close to the wiper plate (14). 4. A stamping and drawing die according to claim 3, characterized in that: an airbag (16) is fixedly connected to the inner side of the hollow groove (15), and a hole is opened at the lower end of the airbag (16), so The hole communicates with the air hole (13). 5. A stamping and drawing die according to claim 4, characterized in that: a groove (17) is provided on the side of the side groove (8) away from the center of the lower die (1), and the side groove (8) is provided with a groove (17). The upper end of the groove (17) is hinged with a convex block (18), a torsion spring is sleeved at the hinge joint of the convex block (18), and a cleaning plate (19) is fixedly connected to the lower end of the convex block (18). 6 . The stamping and drawing die according to claim 2 , wherein the air holes ( 13 ) are arranged obliquely downward. 7 . 7 . The stamping and drawing die according to claim 6 , wherein the air holes ( 13 ) are arranged in a cone shape whose diameter gradually decreases from top to bottom. 8 . 8. A stamping and drawing die according to any one of claims 4-7, characterized in that: the lower end of the scraper (6) is rotated toward the direction of the side wall of the lower die (1) and is provided with a Balls (20). 9 . The stamping and drawing die according to claim 5 , wherein a through hole ( 21 ) is opened in the middle of the cleaning plate ( 19 ). 10 . 10 . The punching and drawing die according to claim 9 , wherein the lower end surface of the through hole ( 21 ) is inclined toward the groove ( 17 ). 11 .

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