Multi-station fine blanking forming die for oppositely extruding double bosses

Abstract

The utility model discloses a multi-station fine blanking forming die for oppositely extruding double bosses, which comprises a lower die set, a middle die set and an upper die set, the upper die set is positioned above the lower die set, and the middle die set is positioned between the lower die set and the upper die set; a guide hole punch, a pre-punching hole punch, an upper extrusion male die and a blanking male-female die are fixed to the upper die set. The middle die set is provided with a first penetrating groove allowing the guide hole puncher pin to penetrate, a second penetrating groove allowing the pre-punching hole puncher pin to penetrate, a third penetrating groove allowing the upper extrusion male die to penetrate and a fourth penetrating groove allowing the blanking male-female die to penetrate. An upper dowel bar for pushing the middle module downwards is movably mounted on the upper module; the lower die set comprises a lower die base and a floating base. The floating base is installed on the lower die base in a lifting mode. And a floating die holder body ejector rod for upwards pushing the floating seat is movably mounted on the lower die holder. According to the utility model, time can be saved, processing efficiency is improved, product quality is ensured, and volume is reduced.

Description

Technical Field

[0001] The utility model relates to the field of precision punching forming dies, in particular to a multi-station precision punching forming die for extruding double bosses in opposite directions. Background Art

[0002] For parts with large dimensions, high workpiece strength, and ultra-thick original workpiece plates (such as trailing arm hub flange plates), during the processing, if punching and then flanging are used, the workpiece in the boss area is not enough to form a boss. Therefore, the following method is generally used for production: first cut the process hole, then draw the convex hull, then use roughening to form the boss, and then shape it. At least 4 workstations are required to form the boss. In the processing of parts such as trailing arm hub flange plates, boss forming, guide hole punching, and pre-punching need to be switched to different processing molds, and manual blanking is required, which takes a long time and results in low efficiency, which is far from meeting industry requirements and is likely to affect product quality. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a multi-station precision punching forming die for extruding double bosses in opposite directions, which can complete guide hole punching, pre-punching, boss forming, and punching and blanking at one time, which can save time, improve processing efficiency, and ensure product quality.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A multi-station fine-punching forming die for extruding double bosses in opposite directions, comprising a lower die set, a middle die set and an upper die set, wherein the upper die set is located above the lower die set, and the middle die set is located between the lower die set and the upper die set; a guide hole punch, a pre-punching hole punch, an upper extrusion punch and a blanking convex-concave die are fixed on the upper die set; the middle die set is provided with a first penetration groove for the guide hole punch, a second penetration groove for the pre-punching hole punch, a third penetration groove for the upper extrusion punch and a fourth penetration groove for the blanking convex-concave die; an upper force transmission rod for pushing the middle die set downward is movably mounted on the upper die set; the lower die set comprises a lower die seat and a floating seat; the floating seat can be lifted and lowered on the lower die seat; a floating die seat body for pushing the floating seat upward is movably mounted on the lower die seat Push rod; the lower die set is movably equipped with a guide hole waste push rod opposite to the guide hole punch, and a pre-punching waste push rod opposite to the pre-punching punch; a lower extrusion punch is fixed on the floating seat, the lower extrusion punch is opposite to the upper extrusion punch, and is used to cooperate with the upper extrusion punch to form a boss of the workpiece; a fine blanking back pressure plate opposite to and matching the blanking convex and concave dies is movably installed on the floating seat, and a lower force transmission rod for pushing the fine blanking back pressure plate upward is movably installed on the lower die seat; a punching punch and a boss chamfering punch are fixed on the floating seat; the punching punch and the boss chamfering punch are respectively inserted in the fine blanking back pressure plate; an upper counter push rod inserted in the blanking convex and concave dies and opposite to the punching punch is movably installed on the upper die set.

[0006] A groove support column is fixed on the upper die set, and a groove punch opposite to and matching the groove support column is fixed on the floating seat.

[0007] A boss inner hole punch is fixed on the upper die set, and a fifth penetration groove for the boss inner hole punch to penetrate is provided on the middle die set; a boss punch lower ejector rod opposite to the boss inner hole punch is movably mounted on the lower die set.

[0008] The middle die set is provided with a guide pin, and the lower die set is provided with a guide hole for the guide pin to penetrate.

[0009] An inner guide post is fixed on the floating seat, and the inner guide post is slidably arranged in the middle die set and the lower die seat.

[0010] The floating seat is connected with a discharge screw, and the lower die seat is provided with a limiting groove for the discharge screw to pass through.

[0011] The lower die seat is provided with a first movable hole extending to the floating seat, and the guide hole waste ejector rod is movably installed in the first movable hole.

[0012] The lower die seat is provided with a second movable hole extending to the floating seat, and the pre-punching waste ejector rod is movably installed in the second movable hole.

[0013] The lower die base is provided with a third movable hole, and the top rod of the floating die base body is movably installed in the third movable hole.

[0014] The floating seat comprises a die back plate and a floating die seat body, and the floating die seat body is located above the die back plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a multi-station fine-punching forming die for extruding double bosses in opposite directions. The lower die set, the middle die set and the upper die set are reasonably arranged. A guide hole punch, a pre-punching punch, an upper extrusion punch and a blanking convex-concave die are fixed on the upper die set. In combination with a guide hole waste ejector rod, a pre-punching waste ejector rod, a lower extrusion punch, a blanking convex-concave die, a fine-punching blanking counter-pressure plate, a punching punch and a boss chamfering punch, the guide hole punching, pre-punching punching, boss forming and punching blanking can be completed at one time, which can save time and improve processing efficiency. Moreover, in the fine-punching process, the workpiece can be pressed by the middle die set and the floating seat to avoid the workpiece displacement during the stamping process, which can ensure good product size consistency, stable boss structure size and product quality. In addition, with the functions of guide hole punching, pre-punching punching, boss forming and punching blanking, the structure can be made more compact and the volume can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Among them, 1. upper die seat; 2. guide plate; 3. gear ring pressure plate; 4. upper pad; 5. guide hole punch; 6. pre-punching punch; 7. upper extrusion punch; 8. groove support column; 9. upper force transmission rod; 10. boss inner hole punch; 11. guide pin; 12. blanking convex and concave die; 13. upper anti-thrust rod; 14. inner guide column; 15. lower die seat; 17. concave die back plate; 18. floating die seat body; 1 9. Pilot hole waste ejector rod; 20. Pre-punching waste ejector rod; 21. Lower extrusion punch; 22. Groove punch; 23. Boss punch lower ejector rod; 24. Floating die seat ejector rod; 25. Lower force transmission rod; 26. Punching punch; 27. Boss chamfering punch; 28. Fine blanking counter-pressure plate; 29. ​​Unloading screw; 30. Upper die set; 31. Middle die set; 32. Lower die set; 34. Floating seat. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0020] like Figure 1 As shown, a multi-station fine blanking forming die for extruding double bosses in opposite directions comprises a lower die set 32, a middle die set 31 and an upper die set 30, wherein the upper die set 30 is located above the lower die set 32, and the middle die set 31 is located between the lower die set 32 ​​and the upper die set 30; a guide hole punch 5, a pre-punching punch 6, an upper extrusion punch 7 and a blanking punch and concave die 12 are fixed on the upper die set 30; a first penetration groove for the guide hole punch 5 to penetrate, a first penetration groove for the pre-punching punch 6, an upper extrusion punch 7 and a blanking punch and concave die 12 are provided on the middle die set 31 The second penetration groove through which the punching punch 6 penetrates, the third penetration groove through which the upper extrusion punch 7 penetrates, and the fourth penetration groove through which the blanking punch and concave die 12 penetrates; the upper die set 30 is movably mounted with an upper force transmission rod 9 for pushing the middle die set 31 downward; the lower die set 32 ​​includes a lower die seat 15 and a floating seat 34; the floating seat 34 is movably mounted on the lower die seat 15; the lower die seat 15 is movably mounted with a floating die seat body for pushing the floating seat 34 upward The lower die set 32 ​​is provided with a guide hole waste ejector 19 opposite to the guide hole punch 5 and a pre-punching waste ejector 20 opposite to the pre-punching punch 6; the floating seat 34 is provided with a lower extrusion punch 21, the lower extrusion punch 21 is opposite to the upper extrusion punch 7, and is used to cooperate with the upper extrusion punch 7 to form a boss of the workpiece; the floating seat 34 is provided with a convex plate opposite to the blanking convex and concave die 12 and opposite to the blanking convex and concave die 12. A matching fine blanking back pressure plate 28, a lower force transmission rod 25 for pushing the fine blanking back pressure plate 28 upward is movably installed on the lower die seat 15; a punching punch 26 and a boss chamfering punch 27 are fixed on the floating seat 34; the punching punch 26 and the boss chamfering punch 27 are respectively inserted into the fine blanking back pressure plate 28; an upper counter-push rod 13 is movably installed on the upper die group 30, which is inserted into the blanking convex and concave dies 12 and opposite to the punching punch 26.

[0021] After the mold is opened and the workpiece enters the working area of ​​the mold, the upper mold group 30 and the middle mold group 31 descend until the middle mold group 31 and the lower mold group 32 are in contact with the workpiece and continue to descend. Then, the middle mold group 31 descends under the downward pushing action of the upper force transmission rod 9, and the floating seat 34 ascends under the pushing action of the floating mold seat body push rod 24 to press the workpiece through the middle mold group 31 and the floating seat 34. The upper mold group 30 continues to descend relative to the middle mold group 31, and the workpiece is extruded toward each other by the upper extrusion punch 7 and the lower extrusion punch 21 to form a boss, and the guide hole punch 5, the pre-punching punch 6, and the blanking convex and concave dies 12 pass through the workpiece to complete the guide hole punching, pre-punching punching, and forming. When the mold is opened, the upper mold group 30 and the middle mold group 31 move upward as a whole, and the workpiece moves upward along with the upper mold group 30. After moving upward for about 60 mm, the upper force transmission rod 9 pushes the middle mold group 31 downward during the upward process, so that the middle mold group 31 moves downward relative to the upper mold group 30, and the workpiece is separated from all punches and convex and concave molds of the upper mold group 30, and is separated from the middle mold group 31. At the same time, the guide hole waste ejector rod 19 and the pre-punching waste ejector rod 20 move upward relative to the lower mold group 32, and the punching waste is ejected out of the floating seat 34. The lower force transmission rod 25 moves upward to push the fine blanking counter-pressure plate 28, and the finished part is pushed out of the floating seat 34. In this way, a stamping cycle can be completed. Therefore, the utility model provides a multi-station fine blanking forming die for extruding double bosses in opposite directions, which is reasonably set by the lower mold group 32, the middle mold group 31 and the upper mold group 3 0, a guide hole punch 5, a pre-punching punch 6, an upper extrusion punch 7 and a blanking convex-concave die 12 are fixed on the upper die set 30, and combined with a guide hole waste ejector rod 19, a pre-punching waste ejector rod 20, a lower extrusion punch 21, a blanking convex-concave die 12, a fine blanking back pressure plate 28, a punching punch 26 and a boss chamfering punch 27, the guide hole punching, pre-punching, boss forming and punching blanking can be completed at one time, which can save time, improve processing efficiency and ensure product quality.

[0022] A groove support column 8 is fixed on the upper mold assembly 30, and a groove punch 22 opposite to and matching the groove support column 8 is fixed on the floating seat 34, so that the multi-station precision stamping forming mold of the opposing extrusion double bosses can complete the groove forming in one cycle to further improve the processing efficiency.

[0023] The upper die set 30 is fixed with a boss inner hole punch 10, and the middle die set 31 is provided with a fifth penetration groove for the boss inner hole punch 10 to penetrate; the lower die set 32 ​​is movably provided with a boss punch lower ejector 23 opposite to the boss inner hole punch 10. The middle die set 31 and the floating seat 34 press the workpiece, and the upper die set 30 continues to move downward relative to the middle die set 31, and the boss inner hole punch 10 passes through the workpiece to complete the boss inner hole punching. When the mold is opened, the upper mold group 30 and the middle mold group 31 move upward at the same time, and the workpiece moves upward with the upper mold group 30. After moving upward for about 60 mm, the upper force transmission rod 9 pushes the middle mold group 31 downward during the upward process, so that the middle mold group 31 moves downward relative to the upper mold group 30. At the same time, the lower ejector rod 23 of the boss punching moves upward relative to the lower mold group 32, and the punching waste is ejected out of the floating seat 34, so that the multi-station fine stamping forming mold of the opposing extrusion double bosses can also complete the punching of the boss inner hole in one cycle, so as to further improve the processing efficiency.

[0024] The middle die set 31 is provided with a guide pin 11 , and the lower die set 32 ​​is provided with a guide hole for the guide pin 11 to penetrate.

[0025] The floating seat 34 is fixed with an inner guide post 14 , which is slidably disposed in the middle die set 31 and the lower die seat 15 . The above structure can guide the movement of the floating seat 34 .

[0026] The floating seat 34 is connected with a discharge screw 29 , and the lower die seat 15 is provided with a limiting groove for the discharge screw 29 to pass through.

[0027] The lower die seat 15 is provided with a first movable hole extending to the floating seat 34, and the guide hole waste ejector rod 19 is movably installed in the first movable hole. By adopting the above structure, the installation of the guide hole waste ejector rod 19 can be facilitated.

[0028] The lower die seat 15 is provided with a second movable hole extending to the floating seat 34, and the pre-punching waste ejector rod 20 is movably installed in the second movable hole. By adopting the above structure, the installation of the pre-punching waste ejector rod 20 can be facilitated.

[0029] The lower die base 15 is provided with a third movable hole, and the floating die base body push rod 24 is movably installed in the third movable hole. By adopting the above structure, the installation of the floating die base body push rod 24 can be facilitated.

[0030] The floating seat 34 includes a die back plate 17 and a floating die seat body 18, and the floating die seat body 18 is located above the die back plate 17. The upper die set 30 includes an upper die seat 1 and an upper pad 4, and the upper pad 4 is fixed below the upper die seat 1. The pilot hole punch 5, the pre-punching punch 6, the upper extrusion punch 7 and the blanking punch and concave die 12 are all fixed on the upper pad 4. The middle die set 31 includes a gear ring pressing plate 3, and the first penetration groove, the second penetration groove, the third penetration groove and the fourth penetration groove are arranged on the gear ring pressing plate 3. The gear ring pressing plate 3 can also be provided with a guide plate 2, and the guide plate 2 is provided with a matching groove for the upper pad 4 to be embedded. By adopting the above structure, it is convenient for processing and manufacturing.

[0031] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A multi-station fine blanking die for extruding double bosses in opposite directions, characterized in that: It includes a lower die set, a middle die set and an upper die set, wherein the upper die set is located above the lower die set, and the middle die set is located between the lower die set and the upper die set; a guide hole punch, a pre-punching punch, an upper extrusion punch and a blanking punch and concave and convex dies are fixed on the upper die set; The middle die set is provided with a first penetration groove for the guide hole punch, a second penetration groove for the pre-punching punch, a third penetration groove for the upper extrusion punch, and a fourth penetration groove for the blanking punch; an upper force transmission rod for pushing the middle die set downward is movably installed on the upper die set; the lower die set includes a lower die seat and a floating seat; the floating seat is movably installed on the lower die seat; a floating die seat body push rod for pushing the floating seat upward is movably installed on the lower die seat; a guide hole waste push rod opposite to the guide hole punch, and a pre-punching waste push rod opposite to the pre-punching punch are movably installed on the lower die set ; A lower extrusion punch is fixed on the floating seat, the lower extrusion punch is opposite to the upper extrusion punch, and is used to cooperate with the upper extrusion punch to form a boss of the workpiece; a fine blanking back pressure plate opposite to and matching the blanking convex and concave dies is movably mounted on the floating seat, and a lower force transmission rod for pushing the fine blanking back pressure plate upward is movably mounted on the lower die seat; a punching punch and a boss chamfering punch are fixed on the floating seat; the punching punch and the boss chamfering punch are respectively inserted into the fine blanking back pressure plate; an upper counter-push rod inserted into the blanking convex and concave dies and opposite to the punching punch is movably mounted on the upper die group.

2. The multi-station fine blanking forming die for extruding double bosses as claimed in claim 1, characterized in that: A groove support column is fixed on the upper die set, and a groove punch opposite to and matching the groove support column is fixed on the floating seat.

3. The multi-station fine blanking forming die for extruding double bosses as claimed in claim 1, characterized in that: A boss inner hole punch is fixed on the upper die set, and a fifth penetration groove for the boss inner hole punch to penetrate is provided on the middle die set; a boss punch lower ejector rod opposite to the boss inner hole punch is movably mounted on the lower die set.

4. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: The middle die set is provided with a guide pin, and the lower die set is provided with a guide hole for the guide pin to penetrate.

5. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: An inner guide post is fixed on the floating seat, and the inner guide post is slidably arranged in the middle die set and the lower die seat.

6. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: The floating seat is connected with a discharge screw, and the lower die seat is provided with a limiting groove for the discharge screw to pass through.

7. The multi-station fine blanking forming die for extruding double bosses as claimed in claim 1, characterized in that: The lower die seat is provided with a first movable hole extending to the floating seat, and the guide hole waste ejector rod is movably installed in the first movable hole.

8. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: The lower die seat is provided with a second movable hole extending to the floating seat, and the pre-punching waste ejector rod is movably installed in the second movable hole.

9. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: The lower die base is provided with a third movable hole, and the top rod of the floating die base body is movably installed in the third movable hole.

10. The multi-station fine blanking forming die for extruding double bosses in opposite directions as claimed in claim 1, characterized in that: The floating seat comprises a die back plate and a floating die seat body, and the floating die seat body is located above the die back plate.

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