CN114951433A - Multi-process composite die for silencer flange - Google Patents

Abstract

The invention discloses a multi-process composite die for a silencer flange, which belongs to the technical field of dies and comprises an upper die base, a lower die base, a guide pillar and a guide sleeve, wherein the upper guide sleeve of the upper die base is sleeved on the guide pillar of the lower die base, a male die fixing plate is arranged below the upper die base, a first blanking male die, a connecting block and a pre-punching male die are sequentially arranged in the male die fixing plate from outside to inside, a flanging male die, a jacking block, a drawing male die and a punching female die are sequentially arranged in the blanking female die from outside to inside, a connecting slide block chute is arranged in the upper die base, a connecting slide block is arranged in the connecting slide block chute, one end of the connecting slide block is attached to the punching slide block, the other end of the connecting slide block is attached to the punching male die, and the lower end of the punching male die is fixed on the lower die base. The invention can complete six procedures of deep drawing, pre-punching, blanking, hole flanging, flanging and punching in sequence in one-time die opening and closing of the die, thereby greatly improving the production and processing efficiency of the parts; the stability is good, and the method is suitable for batch processing production operation.

Description

Multi-process composite die for silencer flange

Technical Field

The invention relates to the technical field of dies, in particular to a multi-process composite die for a silencer flange.

Background

The automobile silencer is a part for reducing noise generated by the working of an engine of a motor vehicle, the silencer flange is an important accessory of an automobile exhaust system, the silencer flange is mainly used for connecting the tail end of an air inlet pipe and the front end of an exhaust pipe to play a role in connection and fastening, and the part has high requirement on dimensional forming precision. The muffler flange is generally manufactured by a press forming method, i.e., a press working method in which a press die mounted on a press machine is used to apply pressure to a metal plate at room temperature to cause plastic deformation and separation of the metal plate, thereby obtaining a desired part. With the development of society, the demand of automobiles is continuously rising, the demand of automobile parts is also rising, and the large demand means that higher requirements are put forward on the manufacturing efficiency of the parts. The flange part of the silencer in the prior art is usually formed by pressure machining by adopting a single-process die or a progressive die. However, due to the complexity of the structural characteristics of the flange part of the silencer, if a single-process die is adopted, multiple dies are required to complete the process in multiple times, the forming efficiency is low, and the mass production of the part is not facilitated; if a progressive die is adopted, a larger die size is required, so that a larger requirement is provided for a forming press, and meanwhile, the accurate positioning of parts among multiple stations of the progressive die is difficult to realize.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a multi-process composite die for a silencer flange, which is characterized in that the processes of drawing, pre-punching, blanking, hole flanging, flanging and punching required by silencer flange part forming are sequentially obtained through one-time die opening and closing action of the composite die, so that the high-efficiency and high-precision silencer flange part forming is realized.

The technical scheme of the invention is as follows: the multi-process composite die comprises an upper die base, a lower die base, a guide pillar and a guide sleeve, wherein the guide sleeve is arranged at the lower part of the upper die base, the guide pillar is arranged at the upper part of the lower die base, the guide sleeve is sleeved on the guide pillar, a male die fixing plate is arranged below the upper die base, a first blanking male die, a connecting block and a pre-punching male die are sequentially arranged inside the male die fixing plate from outside to inside, a lower die base plate is arranged above the lower die base, a lower base plate is arranged on the lower die base plate, a blanking female die is fixed on the lower base plate, and a flanging male die, an ejector block, a drawing male die and a punching female die are sequentially arranged inside the blanking female die from outside to inside.

The punching die is characterized in that a connecting slide block sliding groove is formed in the upper die base, a connecting slide block is arranged in the connecting slide block sliding groove, one end of the connecting slide block is attached to the punching slide block, the other end of the connecting slide block is attached to the punching male die, the lower end of the punching male die is fixed on the lower die base, and a third reset spring is connected between the connecting slide block and the inner wall of the connecting slide block sliding groove.

The upper die base is provided with a punching male die sliding groove, a second reset spring is arranged in the punching male die sliding groove, and the second reset spring is sleeved on the punching male die.

The punch plate is characterized in that a sliding groove is formed in the punch plate, a sliding block is arranged on the sliding groove, a rotating block is connected between the sliding block and the blanking female die, two ends of the rotating block are respectively provided with an annular groove, connecting columns are arranged on the sliding block and the blanking female die and are inserted into the annular grooves, and the rotating block is L-shaped.

And a second discharging spring is arranged above the lower die base, a supporting plate is arranged at the upper end of the second discharging spring, the lower end of a push rod is connected with the supporting plate, the upper end of the push rod is connected with the lower end of a deep-drawing male die, and the push rod penetrates through a lower die base plate.

And a cushion block is arranged between the lower die base plate and the lower die base.

A male die base plate is arranged below the drawing male die and the ejector block, a first discharging spring is arranged between the lower base plate and the male die base plate, and a first reset spring is arranged between the flanging male die and the lower base plate.

The upper end of the punching male die is provided with a contact sliding block, the two ends of the second reset spring are connected with the lower end of the contact sliding block and the lower end of the sliding groove of the punching male die, the contact sliding block is in sliding connection with the connecting sliding block, and the contact surface of the contact sliding block and the connecting sliding block is an inclined surface.

The upper end of the punching slide block is provided with two first working inclined planes with different inclination angles, the inclination angle of the first working plane on the upper part is larger than that of the first working plane on the lower part, and one end of the connecting slide block is provided with a second working inclined plane matched with the first working inclined plane.

And a second blanking male die is sleeved outside the first blanking male die, and a fourth reset spring is connected between the second blanking male die and the male die fixing plate.

And a die handle is arranged at the upper part of the upper die base.

And the blanking female die is provided with a positioning pin.

The invention relates to a silencer flange part stamping compound die for an automobile exhaust system, which can complete six procedures of deep drawing, pre-punching, blanking, hole flanging, flanging and punching required by part forming in sequence in one-time die opening and closing, thereby greatly improving the production and processing efficiency of the parts; the stability is good, and the method is suitable for batch processing production operation; according to the invention, the part can be processed through the designed forming structure only by one set of die, and no additional driving force is needed while each process of the die acts successively, so that the economical efficiency is good; the precision of the parts is high by adopting the compound die to form at one time.

Drawings

Fig. 1 is a schematic view of the structure of a mold.

Fig. 2 is a schematic structural view of an initial position of the punching composite die.

Fig. 3 is a partial cross-sectional view of fig. 2.

Fig. 4 is a schematic view of the punch slide, the connecting slide and the punch.

Fig. 5 is a schematic view of a punch slide, a connecting slide.

FIG. 6 is a schematic view of the upper and lower dies of the composite press die in contact.

Fig. 7 is a partial cross-sectional view of fig. 6.

Fig. 8 is a schematic view of a drawing and pre-punching process of a stamping composite die.

Fig. 9 is a partial cross-sectional view of fig. 6.

FIG. 10 is a schematic view of a blanking and hole flanging process of a stamping composite die.

Fig. 11 is a partial cross-sectional view of fig. 6.

FIG. 12 is a schematic view of the punching and flanging of the punching composite die.

Fig. 13 is a partial cross-sectional view of fig. 6.

Fig. 14 is a schematic view of a stamping composite die.

FIG. 15 is a schematic view of a lower die of the stamping compound die.

Fig. 16 is a schematic diagram of a punch retainer, a first blanking punch, a second blanking punch, and a fourth return spring.

FIG. 17 is a schematic view of the configuration of the muffler flange components.

In the figure: 1 lower die holder, 2 cushion blocks, 3 lower die cushion plates, 4 lower cushion plates, 5 blanking female dies, 6 ejecting piece blocks, 7 plates, 8 upper die holders, 9 punching male dies, 10 second return springs, 11 connecting sliding blocks, 12 third return springs, 13 punching sliding blocks, 14 connecting blocks, 15 die handles, 16 pre-punching male dies, 17 first blanking male dies, 18 male die fixing plates, 19 sliding blocks, 20 second blanking male dies, 21 deep drawing male dies, 22 guide sleeves, 23 guide posts, 24 flanging male dies, 25 rotating blocks, 26 first return springs, 27 first unloading springs, 28 punching female dies, 29 ejector rods, 30 supporting plates, 31 male die cushion plates, 32 second unloading springs, 33 positioning pins, 34 fourth return springs and 35 sliding grooves.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 16, the multi-process composite die for the muffler flange comprises an upper die holder 8, a lower die holder 1, a guide pillar 23 and a guide sleeve 22, wherein the guide sleeve 22 is arranged at the lower part of the upper die holder 8, the guide pillar 23 is arranged at the upper part of the lower die holder 1, the guide sleeve 22 is sleeved on the guide pillar 23, and a die shank 15 is arranged at the upper part of the upper die holder 8. A punch fixing plate 18 is arranged below the upper die base 8, a first blanking punch 17, a connecting block 14 and a pre-punching punch 16 are sequentially arranged in the punch fixing plate 18 from outside to inside, a second blanking punch 20 is sleeved outside the first blanking punch 17, and a fourth reset spring 34 is connected between the second blanking punch 20 and the punch fixing plate 18. The die comprises a lower die base 1 and is characterized in that a lower die base plate 3 is arranged above the lower die base 1, a cushion block 2 is arranged between the lower die base plate 3 and the lower die base 1, a lower base plate 4 is arranged on the lower die base plate 3, a blanking female die 5 is fixed on the lower base plate 4, and a flanging male die 24, an ejecting block 6, a drawing male die 21 and a punching female die 28 are sequentially arranged inside the blanking female die 5 from outside to inside.

The punching die is characterized in that a connecting slide block sliding groove is formed in the upper die base 8, a connecting slide block 11 is arranged in the connecting slide block sliding groove, one end of the connecting slide block 11 is attached to a punching slide block 13, the other end of the connecting slide block 11 is attached to a punching male die 9, the lower end of the punching male die 9 is fixed on the lower die base 1, a third reset spring 12 is connected between the connecting slide block 11 and the inner wall of the connecting slide block sliding groove, a punching male die sliding groove is formed in the upper die base 8, a second reset spring 10 is arranged in the punching male die sliding groove, and the second reset spring 10 is sleeved on the punching male die 9.

The punch retainer is characterized in that a sliding groove 35 is formed in the punch retainer 18, a sliding block 19 is arranged on the sliding groove 35, the top surface of the sliding block 20 is attached to the top surface of the punch retainer 18, the working surface of the sliding block 20 is attached to the working surface of the blanking groove 21, a rotating block 25 is connected between the sliding block 19 and the blanking female die 5, two ends of the rotating block 25 are provided with annular grooves, connecting columns are arranged on the sliding block 19 and the blanking female die 5 and inserted into the annular grooves, the rotating block 25 is L-shaped, grooves are formed in the punch retainer 19 and are formed in two sides of the sliding groove 35, and accordingly the stroke of the rotating block 20 is not affected. . During die assembly, the rotating block 26 rotates to drive the sliding block 20 to move outwards, so that the second blanking male die 21 can move upwards, the first return spring 27 rebounds upwards, and the second blanking male die 21 moves upwards to complete the flanging process. During moving the slide block 20 out and in, the top surface of the slide block 20 is attached to and slides on the top surface of the punch retainer 18, the working surface of the slide block 20 is attached to and slides on the working surface of the blanking groove 21, and when the mold is opened, the rotating block 26 rotates to push the slide block 20 to reset.

A second discharging spring 32 is arranged above the lower die holder 1, a supporting plate 30 is arranged at the upper end of the second discharging spring 32, the lower end of a mandril 29 is connected with the supporting plate 30, the upper end of the mandril 29 is connected with the lower end of the deep drawing convex die 21, and the mandril 29 penetrates through the lower die base plate 3. A punch backing plate 31 is arranged below the drawing punch 21 and the top piece block 6, and the punch backing plate 31 enables the top piece block 6 and the upper surface of the flanging punch 24 to be located on the same plane when the die is at the initial position. A first discharging spring 27 is arranged between the lower backing plate 4 and the male die backing plate 31, a first return spring 26 is arranged between the flanging male die 24 and the lower backing plate 4, and the first return spring 26 is used for realizing springback by matching the rotating block 26 with the sliding block 20 after blanking so as to enable the flanging male die 24 to move upwards and realize a flanging process.

The upper end of the punching male die 9 is provided with a contact sliding block, the two ends of the second reset spring 10 are connected with the lower end of the contact sliding block and the lower end of the sliding groove of the punching male die, the contact sliding block is in sliding connection with the connecting sliding block 11, and the contact surface of the contact sliding block and the connecting sliding block 11 is an inclined surface. One end of the connecting slide block 11 is provided with a second working inclined plane matched with the first working inclined plane. As shown in fig. 4 and 5, the punching slide 13 and the connecting slide 11 both have two working slopes with different angles, the inclination angle of the upper first working face is larger than that of the lower first working face, and θ 1 > θ 2, so as to realize the speed change of the 9 punching male die in the die closing process. When the die is closed, the punching slide block 13 firstly generates a section of idle stroke relative to the upper die base, then the punching slide block 13 contacts with the working inclined plane of the theta 1 on the connecting slide block 11 to enable the connecting slide block 11 to generate slow sliding, and meanwhile, the working surface of the connecting slide block 11 contacts with the working surface of the punching male die 9 to generate slow sliding. When the flanging process is carried out, the working inclined plane where the theta 2 is located on the connecting slide block 11 enables the connecting slide block 11 to slide rapidly, and meanwhile, the 9 punching male die is ejected downwards rapidly, so that the punching process is completed.

The blanking female die 5 is provided with a positioning pin 33, and the positioning pin 33 can ensure that the sheet material 7 is correctly fed in, so that the sheet material 7 is conveniently positioned. After the plate 7 is put in (as shown in fig. 2 and 3), die-closing and stamping are carried out.

When the die is closed, the upper die holder 8 descends, and the first blanking male die 17 and the second blanking male die 20 firstly contact with the sheet material 7 and respectively press the top piece block 6 and the flanging male die 24 to form a blank pressing force (as shown in fig. 6 and 7). And then the upper die holder 8 continues to descend to compress the first unloading spring 27 and the first return spring 26, so that the ejector block 6, the flanging male die 24 and the male die backing plate descend 31, and at the moment, the drawing male die 21 and the blanking male die 7 finish the drawing process. After the drawing process is completed, the pre-punching male die 16 and the punching female die 28 complete the pre-punching process (as shown in fig. 8 and 9). Then, the upper die holder 8 continues to descend to compress the second unloading spring 32, so that the drawing punch 21 descends along with the ejector block 6, the punch backing plate 31 and the flanging punch 24, at this time, the blanking punch 17, the blanking punch 20 and the blanking die 5 complete a blanking process, and then the blanking die 17 and the punching die 28 perform a hole flanging process (as shown in fig. 10 and 11). At this time, the rotating block 25 reaches the limit position, so that the rotating block 25 rotates clockwise around the upper supporting point of the blanking female die 5, the sliding block 19 moves outwards and exits, the first return spring 26 can rebound, and a flanging process is formed when the upper die holder 8 moves downwards. While the flanging process is performed, the punching slide 13 moves upward relative to the upper die base 8, so that the connecting slide 11 moves rightward, the connecting slide 11 contacts with the punching male die 9, and the punching male die 9 is ejected, thereby completing the punching process (as shown in fig. 12 and 13).

The invention can complete six procedures of deep drawing, pre-punching, blanking, hole flanging, flanging and punching in sequence in the one-time die opening and closing of the die, thereby greatly improving the production and processing efficiency of the parts; the stability is good, and the method is suitable for batch processing production operation; from the aspect of economy, the part processing can be completed through the designed forming structure only by one set of die, and additional driving force is not needed when all the working procedures of the die act sequentially; the precision of the parts is high by adopting the compound die to form at one time.

Claims (10)

1. The utility model provides a silencer flange is with compound mould of multiple operation, includes upper die base (8), die holder (1), guide pillar (23) and guide pin bushing (22), the lower part of upper die base (8) is equipped with guide pin bushing (22), the upper portion of die holder (1) is equipped with guide pillar (23), and guide pin bushing (22) cover is on guide pillar (23), its characterized in that: a punch plate (18) is arranged below the upper die base (8), a first blanking punch (17), a connecting block (14) and a pre-punching punch (16) are sequentially arranged in the punch plate (18) from outside to inside, a lower die backing plate (3) is arranged above the lower die base (1), a lower backing plate (4) is arranged on the lower die backing plate (3), a blanking female die (5) is fixed on the lower backing plate (4), a flanging punch (24), a jacking block (6), a deep-drawing punch (21) and a punching female die (28) are sequentially arranged in the blanking female die (5) from outside to inside, a connecting slide block chute is arranged in the upper die base (8), a connecting slide block (11) is arranged in the connecting slide block chute, one end of the connecting slide block (11) is attached to a punching slide block (13), the other end of the connecting slide block is attached to the punching punch (9), and the lower end of the punching punch (9) is fixed on the lower die base (1), a third reset spring (12) is connected between the connecting slide block (11) and the inner wall of the connecting slide block sliding groove, a punching male die sliding groove is arranged on the upper die base (8), a second reset spring (10) is arranged in the punching male die sliding groove, and the second reset spring (10) is sleeved on the punching male die (9).

2. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: the punch fixing device is characterized in that a sliding groove is formed in the punch fixing plate (18), a sliding block (19) is arranged on the sliding groove, a rotating block (25) is connected between the sliding block (19) and the blanking female die (5), annular grooves are formed in two ends of the rotating block (25), connecting columns are arranged on the sliding block (19) and the blanking female die (5), and the connecting columns are inserted into the annular grooves.

3. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: a second discharging spring (32) is arranged above the lower die holder (1), a supporting plate (30) is arranged at the upper end of the second discharging spring (32), the lower end of a push rod (29) is connected with the supporting plate (30), the upper end of the push rod (29) is connected with the lower end of a deep drawing convex die (21), and the push rod (29) penetrates through the lower die base plate (3).

4. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: and a cushion block (2) is arranged between the lower die base plate (3) and the lower die base (1).

5. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: a punch backing plate (31) is arranged below the drawing punch (21) and the ejecting piece block (6), and a first reset spring (26) is arranged between the lower backing plate (4) and the punch backing plate (31) and between the flanging punch (24) of the first discharging spring (27) and the lower backing plate (4).

6. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: the upper end of the punching male die (9) is provided with a contact sliding block, the two ends of a second reset spring (10) are connected with the lower end of the contact sliding block and the lower end of the punching male die sliding groove, the contact sliding block is in sliding connection with the connecting sliding block (11), and the contact surface of the contact sliding block and the connecting sliding block (11) is an inclined surface.

7. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: the upper end of the punching slide block (13) is provided with two first working inclined planes with different inclination angles, the inclination angle of the first working plane on the upper part is larger than that of the first working plane on the lower part, and one end of the connecting slide block (11) is provided with a second working inclined plane matched with the first working inclined plane.

8. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: and a second blanking convex die (20) is sleeved outside the first blanking convex die (17), and a fourth return spring (34) is connected between the second blanking convex die (20) and the convex die fixing plate (18).

9. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: and a die handle (15) is arranged at the upper part of the upper die holder (8).

10. The multi-process composite mold for a muffler flange as recited in claim 1, wherein: and a positioning pin (33) is arranged on the blanking female die (5).

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