Cover plate stamping die with lock pin hole

Abstract

The utility model relates to a cover plate stamping die with a lock pin hole, and belongs to the technical field of cover plate stamping forming. The die comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die base, an upper die plate, an upper force bearing plate, a blanking male die, a pin hole punch and an inner hole ejector block, the upper die plate is connected with the upper force bearing plate through an upper plate connecting rod, the pin hole punch is arranged on the upper die base, the upper die plate is arranged on the outer side of the blanking male die in a sleeving mode, and the inner hole ejector block is arranged in the blanking male die; the lower die assembly comprises a lower die base, a lower die plate, a lower force bearing plate, a blanking female die, a pin hole ejector rod and an inner hole punch, the lower die plate and the inner hole punch are arranged on the lower die base, the lower die plate is arranged on the outer side of the blanking female die in a sleeving mode, and the pin hole ejector rod can move up and down. The stamping die is simple in structure and convenient to operate, the appearance and the inner hole of the lock pin hole and the cover plate can be directly stamped through the stamping die, the same machining standard and guide precision are achieved, the machining precision of the lock pin hole of the cover plate and the machining precision of the cover plate are high, and the machining quality of the cover plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cover plate stamping die with lock pin hole belongs to cover plate stamping forming technical field. BACKGROUND

[0002] The variable valve timing technology adopted by the engine is a modern automobile engine technology, which can adjust the phase of the camshaft in real time according to the operating condition of the engine, change the opening and closing time of the valve, make the opening and closing time of the valve change with the change of the engine speed, make the engine obtain the best intake charge under different speeds, optimize the intake charge of the engine, improve the combustion efficiency, and further improve the performance of the engine. The camshaft adjuster is an important part of the variable valve timing device, mainly including a housing, a rotor, a lock pin and a cover plate, the lock pin is installed on the rotor, the cover plate has a lock pin hole for accommodating the lock pin, the lock pin can be locked in the lock pin hole under the action of oil pressure when the engine stops running, with the running of the engine, the oil pressure changes, when certain conditions are reached, the lock pin will be pushed out of the lock pin hole by the oil pressure, thereby achieving unlocking, the accurate cooperation of the lock pin and the lock pin hole can ensure that the engine maintains the correct valve timing during starting and running, thereby improving the performance and efficiency of the engine.

[0003] The cooperation of the lock pin and the lock pin hole is a key component for ensuring the workpiece of the engine valve timing system, so the machining precision of the lock pin hole is required to be high when machining the lock pin hole, the existing ones are machined by using the traditional progressive die, the inner hole and the lock pin hole on the cover plate are machined respectively, such as machining the inner hole of the cover plate first, forming the inner hole of the cover plate, then machining the lock pin hole of the cover plate, then completing the forming of the outer shape contour of the cover plate, due to the influence of the machining precision of the die and the guiding precision of the cover plate in different stations, machining reference and other factors, the cumulative error is large, the machining precision of the lock pin hole on the cover plate cannot meet the requirements, leading to unqualified product machining. UTILITY MODEL CONTENTS

[0004] The utility model provides a cover plate stamping die with lock pin hole in view of the deficiency of prior art.

[0005] The utility model discloses a technical scheme that solves the above technical problem as follows: a cover plate stamping die with a locking pin hole, comprising an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die holder, an upper die plate, an upper force bearing plate, a blanking punch, a pin hole punch and an inner hole ejector, the upper die holder is arranged between the upper force bearing plate and the upper die plate, the upper die plate is connected with the upper force bearing plate through an upper plate connecting rod, the pin hole punch is arranged on the upper die holder, the upper die plate is sleeved on the outside of the blanking punch, the blanking punch is internally provided with a punch through hole for the pin hole punch to penetrate through and an ejector cavity for accommodating the inner hole ejector, the blanking punch is arranged on a material die driving rod, the upper die holder is provided with a material die rod hole for accommodating the material die driving rod, the inner hole ejector is arranged on an ejector driving rod, and the upper die holder is provided with an ejector rod hole for accommodating the ejector driving rod;

[0006] The lower die assembly comprises a lower die holder, a lower die plate, a lower force bearing plate, a blanking recess, a pin hole ejector rod and an inner hole punch, the lower die plate and the inner hole punch are arranged on the lower die holder respectively, the lower die holder is arranged between the lower die plate and the lower force bearing plate, the lower die plate is sleeved on the outside of the blanking recess, the blanking recess is provided with an ejector rod hole and a punch hole, the pin hole ejector rod can act up and down under the action of an ejector rod driving mechanism, and the blanking recess is connected with the lower force bearing plate through a recess connecting rod.

[0007] The utility model discloses the beneficial effect is: the upper force bearing plate can provide the pressure edge force under the action of upper hydraulic cylinder, the lower force bearing plate can provide the counter -thrust under the action of lower hydraulic cylinder, the cover plate blank enters between the upper die assembly and lower die assembly, the upper die assembly and lower die assembly clamp the blank, the lower surface of upper die plate and blanking punch is flush, the upper surface of lower die plate and blanking recess is flush, the upper die holder moves downward under the action of blanking force, the pin hole punch moves down and stretches out blanking punch and acts on the cover plate blank, and the pin hole ejector rod cooperates with the pin hole punch and moves down and locks the pin hole and forms, under the action of blanking force, the lower die holder continues to move down and acts on blanking punch, blanking punch moves down, and blanking recess cooperates with blanking punch and moves down, in the process of moving down of the cover plate blank, the inner hole punch acts on the cover plate blank and cooperates with the inner hole ejector, realize the blanking forming of the cover plate shape and inner hole, the pin hole punch can also play a certain positioning role in the process of the shape and inner hole forming of the cover plate, and the pressure edge force of upper die plate and lower die plate guarantees the shape and inner hole forming quality of the cover plate, and then opens the mould, and the cover plate is ejected from blanking recess under the action of lower force bearing plate, and the locking pin hole is ejected from the pin hole ejector rod under the action of ejector rod driving mechanism and is unloaded.

[0008] On the basis of the above technical scheme, the utility model still can make improvement as follows.

[0009] Further, the ejector rod driving mechanism comprises an additional force oil cylinder, the additional force oil cylinder is arranged in the lower die seat, and a piston rod of the additional force oil cylinder is connected with the pin hole ejector rod.

[0010] The beneficial effect of the further scheme is that the cylinder body of the additional force oil cylinder is arranged in the lower die seat and acts on the blanking force of the upper die seat, the upper die seat is lowered under the action of the blanking force, the pin hole punch is extended out of the blanking punch and into the rod hole of the pin hole ejector rod, the pin hole ejector rod can abut against the bottom of the locking pin hole, and the pin hole ejector rod can be matched with the pin hole punch to complete the forming of the locking pin hole on the cover plate under the action of the additional force oil cylinder.

[0011] Further, the height of the blanking punch is greater than the height of the upper die plate.

[0012] The beneficial effect of the further scheme is that after the forming of the locking pin hole, the upper die seat is lowered under the action of the blanking force, the blanking punch can act on the strip material to complete the blanking forming of the cover plate.

[0013] Further, the blanking concave die is arranged in the accommodating groove of the lower die assembly, and the depth of the accommodating groove is greater than the height of the blanking concave die.

[0014] The beneficial effect of the further scheme is that the surface of the blanking concave die needs to be flush with the surface of the lower die plate to provide the blanking force for the forming of the locking pin hole, and after the forming of the locking pin hole, the blanking punch is lowered under the action of the blanking force, the blanking concave die can be lowered together with the blanking punch to realize the blanking forming of the cover plate.

[0015] Further, the accommodating groove is arranged in the lower die plate or is formed by the lower die plate and the lower die seat.

[0016] The beneficial effect of the further scheme is that the accommodating groove can be directly arranged on the lower die plate, and of course, the accommodating groove can be a groove hole on the lower die plate, the groove bottom of the accommodating groove is formed by the surface of the lower die seat, and the lower die plate and the lower die seat cooperate to form the accommodating space for the blanking concave die.

[0017] Further, the blanking punch is arranged on the upper die cushion plate, and the die driving rod is connected with the blanking punch through the upper die cushion plate.

[0018] The beneficial effect of the further scheme is that the blanking punch is fixed on the upper die plate, and the position of the blanking punch is adjusted conveniently and quickly through the upper die plate, so that the blanking punch can be flush with the lower surface of the upper die plate to act on the strip material when the mold is closed, and the pressure edge force is provided for the locking pin hole processing process, and the upper die holder acts on the blanking punch to move downward to act on the strip material to realize the blanking and forming of the outer shape of the cover plate under the action of the blanking force.

[0019] Further, the blanking die is arranged on the lower die plate, and the die connecting rod is connected with the blanking die through the lower die plate.

[0020] The beneficial effect of the further scheme is that the blanking die is fixed on the lower die plate, and the position of the blanking die is adjusted conveniently and quickly through the lower die plate, so that the surface of the blanking die can be flush with the surface of the lower die plate to act on the bottom surface of the strip material to provide the pressure edge force for the cover plate forming process when the mold is closed, and the blanking punch is acted on by the upper die holder to move downward, and the blanking die can move downward to cooperate with the blanking punch to blank the outer shape of the cover plate.

[0021] Further, the die driving rod comprises a die upper rod segment and a die lower rod segment arranged at the bottom of the die upper rod segment, the outer diameter of the die upper rod segment is greater than the outer diameter of the die lower rod segment, and the die rod hole is a stepped hole.

[0022] The beneficial effect of the further scheme is that the blanking punch can be reset under the action of the die driving rod when the upper die holder is reset.

[0023] Further, the top block driving rod comprises a top block upper rod segment and a top block lower rod segment arranged at the bottom of the top block upper rod segment, the outer diameter of the top block upper rod segment is greater than the outer diameter of the top block lower rod segment, and the top block rod hole is a stepped hole.

[0024] The beneficial effect of the further scheme is that the inner hole top block can cooperate with the inner hole punch to complete the blanking and forming of the inner hole when the inner hole of the cover plate is formed, and the top block can be reset when the upper die holder is reset after the outer shape of the cover plate and the blanking and forming of the inner hole are completed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of the utility model;

[0026] Figure 2 It is a structure schematic view of the blanking and forming state of the locking pin hole of the stamping die when the mold is closed;

[0027] Figure 3 It is a structure schematic view of the blanking and forming state of the outer shape and the inner hole of the cover plate;

[0028] Figure 4 This is a structural schematic diagram of the stamping die in the unloading state of this utility model;

[0029] Figure 5 This is a schematic diagram of the machining process for the cover plate blank;

[0030] In the diagram, 1. Upper die base; 2. Upper template; 3. Upper support plate; 4. Blanking punch; 5. Pin hole punch; 6. Inner hole ejector block; 7. Lower die base; 8. Lower template; 9. Lower support plate; 10. Blanking die; 11. Pin hole ejector rod; 12. Inner hole punch; 13. Additional force cylinder; 14. Upper plate connecting rod; 15. Die drive rod; 16. Ejector block drive rod; 17. Die connecting rod; 18. Upper pad plate; 19. Lower pad plate; 20. Cover plate blank. Detailed Implementation

[0031] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0032] like Figures 1-5 As shown, a cover plate stamping die with a locking pin hole includes an upper die assembly and a lower die assembly. The upper die assembly includes an upper die base 1, an upper template 2, an upper support plate 3, a blanking punch 4, a pin hole punch 5, and an inner hole top block 6. The upper die base 1 is located between the upper support plate 3 and the upper template 2. The upper template 2 is connected to the upper support plate 3 through an upper plate connecting rod 14. The pin hole punch 5 is located on the upper die base 1. The upper template 2 is fitted onto the outside of the blanking punch 4. The blanking punch 4 has a punch through hole for the pin hole punch 5 to pass through and a top block cavity for accommodating the inner hole top block 6. The blanking punch 4 is located on a die driving rod 15. The upper die base 1 has a die rod hole for accommodating the die driving rod 15. The inner hole top block 6 is located on a top block driving rod 16. The upper die base 1 has a top block rod hole for accommodating the top block driving rod 16.

[0033] The lower die assembly includes a lower die base 7, a lower template 8, a lower support plate 9, a blanking die 10, a pin-hole ejector 11, and an inner hole punch 12. The lower template 8 and the inner hole punch 12 are respectively disposed on the lower die base 7. The lower die base 7 is located between the lower template 8 and the lower support plate 9. The lower template 8 is fitted onto the outside of the blanking die 10. The blanking die 10 is provided with ejector pin holes and punch holes. The pin-hole ejector 11 can move up and down under the action of the ejector pin drive mechanism. The blanking die 10 is connected to the lower support plate 9 through a die connecting rod 17.

[0034] The top rod driving mechanism comprises an additional force oil cylinder 13 arranged in the lower die seat 7, and a piston rod of the additional force oil cylinder 13 is connected with the pin hole top rod 11. The cylinder body of the additional force oil cylinder 13 is arranged in the lower die seat 7, and a blanking force acts on the upper die seat 1. The upper die seat 1 moves downward under the action of the blanking force. The pin hole punch 5 moves out of the blanking punch 4 and extends into the rod hole of the pin hole top rod 11. The pin hole top rod 11 can abut against the bottom of the locking pin hole. The pin hole top rod 11 can be matched with the pin hole punch 5 to complete the forming of the locking pin hole on the cover plate under the action of the additional force oil cylinder 13.

[0035] The height of the blanking punch 4 is greater than the height of the upper die plate 2. After the locking pin hole is formed, the upper die seat 1 moves downward under the action of the blanking force. The upper die seat 1 can act on the blanking punch 4. The blanking punch 4 can act on the strip to complete the blanking forming of the cover plate profile.

[0036] The blanking recess 10 is arranged in the containing groove of the lower die assembly. The depth of the containing groove is greater than the height of the blanking recess 10. During the feeding of the strip and the forming of the locking pin hole, the surface of the blanking recess 10 needs to be flush with the surface of the lower die plate 8 to provide the blanking force for the forming of the locking pin hole. After the forming of the locking pin hole, the blanking punch 4 moves downward under the action of the blanking force. The blanking recess 10 can move downward in cooperation with the blanking punch 4 to realize the blanking forming of the cover plate profile.

[0037] The containing groove is arranged in the lower die plate 8 or is formed by the lower die plate 8 and the lower die seat 7. The containing groove can be directly arranged on the lower die plate 8. Of course, the containing groove can be a groove hole on the lower die plate 8. The groove bottom of the containing groove is formed by the surface of the lower die seat 7. The lower die plate 8 and the lower die seat 7 cooperate to form the containing space for the blanking recess 10.

[0038] The blanking punch 4 is arranged on the upper backing plate 18. The blanking punch driving rod 15 is connected with the blanking punch 4 through the upper backing plate 18. The blanking punch 4 is fixed on the upper backing plate 18. The position of the blanking punch 4 is adjusted conveniently and quickly through the upper backing plate 18. The blanking punch 4 can be flush with the lower surface of the upper die plate 2 to act on the strip during the clamping, so as to provide the blanking force for the processing of the locking pin hole. During the forming of the cover plate profile, the upper die seat 1 acts on the blanking punch 4 to move downward to act on the strip to realize the blanking forming of the cover plate profile under the action of the blanking force.

[0039] The blanking die 10 is mounted on the lower pad 19, and the die connecting rod 17 is connected to the blanking die 10 through the lower pad 19. The blanking die 10 is fixed on the lower pad 19, and the position of the blanking die 10 can be adjusted quickly and easily through the lower pad 19. This ensures that the surface of the blanking die 10 is flush with the surface of the lower template 8 when the mold is closed, and can act on the bottom surface of the material to provide the blanking force during the forming process of the cover plate. Under the action of the blanking force, the upper die holder 1 acts on the blanking punch 4, and the blanking punch 4 moves down. The blanking die 10 can also move down to cooperate with the blanking punch 4 to blank the shape of the cover plate.

[0040] The die drive rod 15 includes an upper die rod section and a lower die rod section located at the bottom of the upper die rod section. The outer diameter of the upper die rod section is larger than the outer diameter of the lower die rod section, and the die rod hole is a stepped hole. This satisfies the requirement that the upper die base 1 moves downward, causing the blanking punch 4 to move downward, while also ensuring that the blanking punch 4 can be reset under the action of the die drive rod 15 when the upper die base 1 is reset.

[0041] The top block drive rod 16 includes an upper rod section and a lower rod section located at the bottom of the upper rod section. The outer diameter of the upper rod section is larger than the outer diameter of the lower rod section, and the rod hole is a stepped hole. During the inner hole forming of the cover plate, the inner hole top block 6 can cooperate with the inner hole punch 12 to complete the inner hole punching and forming. It can also be reset when the upper die base 1 is reset after the outer shape and inner hole punching and forming of the cover plate are completed.

[0042] The stamping die can be used on a fine blanking machine. The upper hydraulic cylinder of the fine blanking machine is connected to the upper support plate 3 to provide a blank holder force F2, and the lower hydraulic cylinder of the fine blanking machine is connected to the lower support plate 9 to provide a counter-pushing force F3. The cover plate blank 20 can be a strip, such as... Figure 1 As shown, the cover plate blank 20 enters between the upper mold assembly and the lower mold assembly, and the upper mold assembly and the lower mold assembly close and clamp the cover plate blank 20, as shown. Figure 2 As shown, the lower surfaces of the upper template 2 and the blanking punch 4 are flush, and the upper surfaces of the lower template 8 and the blanking die 10 are flush. The upper die holder 1 moves downwards under the action of the blanking force F1. The pin hole punch 5 moves downwards, extending out of the blanking punch 4 and acting on the cover plate blank 20. The pin hole ejector rod 11 cooperates with the pin hole punch 5 to move downwards and form the pin hole. During the pin hole forming process, the blanking punch 4 and the blanking die 10 cooperate to clamp the cover plate blank 20 and press its outer periphery, providing the pressing force for the pin hole, ensuring the pin hole forming accuracy and quality. Under the action of the blanking force F1, as... Figure 3As shown, the lower die seat 7 continues to move down and acts on the blanking punch 4, the blanking punch 4 moves down, the blanking recess 10 matches the blanking punch 4 to move down, the cover plate blank 20 clamped between the blanking punch 4 and the blanking recess moves down, the inner hole punch 12 acts on the cover plate blank 20 and matches the inner hole ejector 6, so that the cover plate profile and the inner hole are punched and formed, in the process of forming the cover plate profile and the inner hole, the pin hole punch 5 inserted in the locking pin hole can also play a certain positioning role, the upper die plate 2 and the lower die plate 8 match to press the periphery of the cover plate blank 20, so as to ensure the forming quality of the cover plate profile and the inner hole; after the locking pin hole, the profile and the inner hole of the cover plate are punched, the stamping die is opened, as shown in Figure 4 As shown, the cover plate is ejected from the blanking recess 10 under the action of the lower force plate 9, and the locking pin hole is ejected from the pin hole ejector 11 under the action of the additional force oil cylinder 13. The utility model has the advantages of simple structure, convenient operation, and the like, the locking pin hole, the profile and the inner hole of the cover plate can be punched by the stamping die, the same machining reference and guiding precision, the locking pin hole of the cover plate and the machining precision of the cover plate itself are high, and the machining quality of the cover plate is improved.

[0043] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cover plate stamping die with a locking pin hole, comprising an upper die assembly and a lower die assembly, characterized in that, The upper die assembly comprises an upper die seat (1), an upper die plate (2), an upper force bearing plate (3), a blanking punch (4), a pin hole punch (5) and an inner hole ejector (6), the upper die seat (1) is arranged between the upper force bearing plate (3) and the upper die plate (2), the upper die plate (2) is connected with the upper force bearing plate (3) through an upper plate connecting rod (14), the pin hole punch (5) is arranged on the upper die seat (1), the upper die plate (2) is sleeved on the outside of the blanking punch (4), the blanking punch (4) is internally provided with a punch through hole for the pin hole punch (5) to penetrate through and an ejector cavity for accommodating the inner hole ejector (6), the blanking punch (4) is arranged on a blanking punch driving rod (15), the upper die seat (1) is provided with a blanking punch rod hole for accommodating the blanking punch driving rod (15), the inner hole ejector (6) is arranged on an ejector driving rod (16), and the upper die seat (1) is provided with an ejector rod hole for accommodating the ejector driving rod (16); The lower die assembly comprises a lower die seat (7), a lower die plate (8), a lower force bearing plate (9), a blanking recess (10), a pin hole ejector rod (11) and an inner hole punch (12), the lower die plate (8) and the inner hole punch (12) are arranged on the lower die seat (7) respectively, the lower die seat (7) is arranged between the lower die plate (8) and the lower force bearing plate (9), the lower die plate (8) is sleeved on the outside of the blanking recess (10), the blanking recess (10) is provided with an ejector rod hole and a punch hole, the pin hole ejector rod (11) can act up and down under the action of an ejector rod driving mechanism, and the blanking recess (10) is connected with the lower force bearing plate (9) through a recess connecting rod (17).

2. The punch press die for a cover plate with a locking pin hole according to claim 1, wherein The ejector rod driving mechanism comprises an additional force oil cylinder (13), the additional force oil cylinder (13) is arranged in the lower die seat (7), and a piston rod of the additional force oil cylinder (13) is connected with the pin hole ejector rod (11).

3. The punch press die for a cover plate with a locking pin hole according to claim 1, wherein The height of the blanking punch (4) is greater than the height of the upper die plate (2).

4. The knock-out punch die with a locking pin hole according to any one of claims 1 to 3, characterized in that, The blanking recess (10) is arranged in a containing groove of the lower die assembly, and the depth of the containing groove is greater than the height of the blanking recess (10).

5. The punch die with a locking pin hole according to claim 4, wherein The containing groove is arranged in the lower die plate (8) or is formed by the lower die plate (8) and the lower die seat (7).

6. The knockout punch die with a locking pin hole according to any one of claims 1 to 3, wherein The blanking punch (4) is arranged on an upper backing plate (18), and the blanking punch driving rod (15) is connected with the blanking punch (4) through the upper backing plate (18).

7. The knockout punch die with a locking pin hole according to any one of claims 1 to 3, wherein The blanking recess (10) is arranged on a lower backing plate (19), and the recess connecting rod (17) is connected with the blanking recess (10) through the lower backing plate (19).

8. The knockout punch die with a locking pin hole according to any one of claims 1 to 3, wherein The blanking punch driving rod (15) comprises a blanking punch upper rod section and a blanking punch lower rod section arranged at the bottom of the blanking punch upper rod section, the outer diameter of the blanking punch upper rod section is greater than the outer diameter of the blanking punch lower rod section, and the blanking punch rod hole is a stepped hole.

9. The knockout hole cover press die according to any one of claims 1 to 3, wherein The ejector driving rod (16) comprises an ejector upper rod section and an ejector lower rod section arranged at the bottom of the ejector upper rod section, the outer diameter of the ejector upper rod section is greater than the outer diameter of the ejector lower rod section, and the ejector rod hole is a stepped hole.

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