A crankshaft blank forging correction die

Abstract

The utility model provides a kind of crankshaft blank forging correction die, including lower support platform, four support guide columns are installed on lower support platform, and the top of support guide column is provided with lower pressure correction subassembly, the just below of lower pressure correction subassembly is provided with lower support connecting frame on lower support platform, and installation support seat is detachably connected on lower support connecting frame by connecting bolt, lower correction die subassembly is fixedly installed on installation support seat, synchronous jacking subassembly extending into lower correction die subassembly is installed on lower support connecting frame, and positioning column is equipped with on the both sides of installation support seat.The utility model has the beneficial effects as follows, the utility model simple structure, convenient to use, can effectively correct work to crankshaft blank piece, so that the size consistency of crankshaft blank piece is effectively promoted, and it is convenient to eject from correction die.

Description

Technical Field

[0001] This utility model is a crankshaft blank forging and correction mold, belonging to the field of crankshaft forging technology. Background Technology

[0002] The crankshaft is a key component of an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other parts of the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] During the forging and trimming process, crankshaft forgings are prone to irregular bending deformations such as bending, resulting in poor dimensional consistency and causing great difficulties for subsequent finishing processes. Furthermore, due to their large weight, crankshaft forgings are not easy to remove from the equipment after processing. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a crankshaft blank forging and straightening mold.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A crankshaft blank forging and straightening die includes a lower support platform, four support guide columns are mounted on the lower support platform, and a downward straightening component is provided on the top of the support guide columns. A lower support connecting frame is provided on the lower support platform directly below the downward straightening component. A mounting support seat is detachably connected to the lower support connecting frame by connecting bolts. A lower straightening die assembly is fixedly mounted on the mounting support seat. A synchronous lifting component extending into the lower straightening die assembly is mounted on the lower support connecting frame. Positioning columns are provided on both sides of the mounting support seat.

[0006] Furthermore, the downward correction assembly includes a top support plate fixed to the top of the support guide column, a hydraulic cylinder fixedly installed at the top center of the top of the top support plate, a downward movable plate movably provided below the top support plate, the support guide column movably passing through the downward movable plate, the output end of the hydraulic cylinder connected to the downward movable plate, an upper mold installed at the bottom of the downward movable plate, an upper correction cavity provided inside the upper mold, and positioning sleeves matching the positioning column symmetrically provided on the downward movable plate.

[0007] Furthermore, the lower correction mold assembly includes a lower mold, which has a lower correction cavity that cooperates with the upper correction cavity. The bottom of the lower mold has several abutting through holes, and both ends of the lower mold have semi-circular rotating grooves.

[0008] Furthermore, the synchronous lifting assembly includes an inner support housing fixed on the mounting support base. The inner support housing has an inner cavity inside, and the top of the inner support housing has several through holes, with each through hole corresponding to an abutting through hole.

[0009] Furthermore, a push-connecting horizontal plate is slidably provided on the inner bottom of the inner support shell, a hydraulic telescopic rod is installed on one end of the outer wall of the inner support shell, the output end of the hydraulic telescopic rod is connected to the push-connecting horizontal plate, and a guide cavity is provided on the other end of the push-connecting horizontal plate. A guide post extending into the guide cavity is fixed on the inner wall of the inner support shell, and an abutting component that cooperates with the through hole is provided on the push-connecting horizontal plate.

[0010] Furthermore, the abutment assembly includes a fixing block fixed to the push-connecting horizontal plate, an inclined push plate rotatably connected to the fixing block, and an inverted U-shaped seat rotatably connected to the other end of the inclined push plate via a rotating shaft, and an abutment post that mates with the through hole is provided on the top of the inverted U-shaped seat.

[0011] The beneficial effects of this utility model are: Four support guide columns are installed on the lower support platform to cooperate with the downward correction component. The mounting support is fixed to the lower support connecting frame by connecting bolts for the installation of the lower correction mold component. The synchronous lifting component can push the crankshaft blank out of the correction mold after the correction work is completed. This utility model has a simple structure and is easy to use. It can effectively correct the crankshaft blank, thereby effectively improving the dimensional consistency of the crankshaft blank and facilitating the ejection of the crankshaft blank from the correction mold. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a crankshaft blank forging and straightening mold according to the present invention; Figure 2 This is a schematic diagram of the downward pressure correction component in a crankshaft blank forging correction die according to the present invention; Figure 3 This is a schematic diagram of the lower correction die assembly in a crankshaft blank forging correction die according to the present invention. Figure 4 This is a schematic diagram of the synchronous lifting assembly in a crankshaft blank forging and straightening mold according to the present invention; Figure 5 This is an enlarged view of the contact component in a crankshaft blank forging correction mold according to this utility model.

[0014] In the diagram, 1. Lower support platform; 2. Support guide column; 3. Lower pressure correction assembly; 4. Lower support connecting frame; 5. Mounting support seat; 6. Synchronous lifting assembly; 7. Lower correction mold assembly; 8. Positioning column; 9. Top support horizontal plate; 10. Hydraulic cylinder; 11. Lower pressure movable plate; 12. Upper mold; 13. Upper correction cavity; 14. Positioning sleeve; 15. Lower mold; 16. Lower correction cavity; 17. Semi-circular rotating groove; 18. Abutment through hole; 19. Inner support shell; 20. Inner cavity; 21. Through hole; 22. Hydraulic telescopic rod; 23. Push connecting horizontal plate; 24. Abutment assembly; 25. Abutment column; 26. Guide cavity; 27. Guide column; 28. Fixing block; 29. ​​Inclined push plate; 30. Rotating shaft; 31. Inverted U-shaped seat. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution for a crankshaft blank forging correction mold, including a lower support platform 1, four support guide columns 2 installed on the lower support platform 1, and a downward correction component 3 set on the top of the support guide columns 2. The four support guide columns 2 installed on the lower support platform 1 are used to cooperate with the downward correction work of the downward correction component 3. A lower support connecting frame 4 is set on the lower support platform 1 directly below the downward correction component 3. A mounting support seat 5 is detachably connected to the lower support connecting frame 4 by connecting bolts. A lower correction mold component 7 is fixedly installed on the mounting support seat 5. A synchronous lifting component 6 extending into the lower correction mold component 7 is installed on the lower support connecting frame 4. Positioning columns 8 are provided on both sides of the mounting support seat 5. The mounting support seat 5 is fixed to the lower support connecting frame 4 by connecting bolts for the installation of the lower correction mold component 7. The synchronous lifting component 6 can push the crankshaft blank out of the correction mold after the correction work of the crankshaft blank is completed.

[0017] See Figure 2The downward correction assembly 3 includes a top support plate 9 fixed to the top of the support guide column 2. A hydraulic cylinder 10 is fixedly installed at the top center of the top of the top support plate 9. A downward movable plate 11 is movably provided below the top support plate 9. The support guide column 2 movably passes through the downward movable plate 11. The output end of the hydraulic cylinder 10 is connected to the downward movable plate 11. An upper mold 12 is installed at the bottom of the downward movable plate 11. An upper correction cavity 13 is provided inside the upper mold 12. Positioning sleeves 14 that match the positioning column 8 are symmetrically provided on the downward movable plate 11. The hydraulic cylinder 10 drives the downward movable plate 11 to descend, thereby causing the upper mold 12 to descend. The upper correction cavity 13 performs the correction work. The cooperation between the positioning column 8 and the positioning sleeve 14 improves the stability of the upper and lower molds.

[0018] See Figure 3 The lower correction mold assembly 7 includes a lower mold 15, which has a lower correction cavity 16 that mates with the upper correction cavity 13. The bottom of the lower mold 15 has several abutment through holes 18, and both ends of the lower mold 15 have semi-circular rotating grooves 17. By engaging the lower correction cavity 16 within the lower mold 15 with the upper correction cavity 13, a correction cavity is formed, thereby performing the correction work on the crankshaft blank.

[0019] See Figure 4-5 The synchronous lifting assembly 6 includes an inner support housing 19 fixed on the mounting support base 5. The inner support housing 19 has an inner cavity 20, and its top has several through holes 21, each corresponding to an abutment through hole 18. A pushing connecting plate 23 is slidably disposed on the inner bottom of the inner support housing 19. A hydraulic telescopic rod 22 is installed on one end of the outer wall of the inner support housing 19, and its output end is connected to the pushing connecting plate 23. One end is provided with a guide cavity 26, and the inner wall of the inner support housing 19 is fixed with a guide post 27 extending into the guide cavity 26. The push-connecting horizontal plate 23 is provided with an abutment component 24 that cooperates with the through hole 21. The abutment component 24 includes a fixing block 28 fixed on the push-connecting horizontal plate 23, and an inclined push plate 29 is rotatably connected to the fixing block 28. The other end of the inclined push plate 29 is rotatably connected to an inverted U-shaped seat 31 through a rotating shaft 30, and the top of the inverted U-shaped seat 31 is provided with an abutment post 25 that cooperates with the through hole 21. The push-connecting horizontal plate 23 is moved by the hydraulic telescopic rod 22, and guided by the guide post 27, so that the push-connecting horizontal plate 23 drives the fixing block 28 to move. Thus, the abutment post 25 is synchronously lifted upward by the rotatably connected inclined push plate 29, so as to achieve the effect of ejecting the crankshaft blank from the correction mold.

[0020] In use, four support guide columns 2 are installed on the lower support platform 1 to cooperate with the downward correction component 3 for downward correction work. The mounting support 5 is fixed to the lower support connecting frame 4 by connecting bolts for the installation of the lower correction mold component 7. The synchronous lifting component 6 can push the crankshaft blank out of the correction mold after the correction work of the crankshaft blank is completed. This utility model has a simple structure and is easy to use. It can effectively correct the crankshaft blank, thereby effectively improving the dimensional consistency of the crankshaft blank and facilitating the ejection of the crankshaft blank from the correction mold.

[0021] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankshaft blank forging and straightening die, characterized in that, Includes a lower support platform (1), on which four support guide columns (2) are installed, and a pressure correction component (3) is provided on the top of the support guide columns (2). A lower support connecting frame (4) is provided on the lower support platform (1) directly below the pressure correction component (3). A mounting support base (5) is detachably connected to the lower support connecting frame (4) by connecting bolts. A lower correction mold assembly (7) is fixedly installed on the mounting support base (5). A synchronous lifting component (6) extending into the lower correction mold assembly (7) is installed on the lower support connecting frame (4). Positioning columns (8) are provided on both sides of the mounting support base (5).

2. The crankshaft blank forging and straightening die according to claim 1, characterized in that, The pressure correction assembly (3) includes a top support plate (9) fixed to the top of the support guide column (2), a hydraulic cylinder (10) fixedly installed at the top center of the top support plate (9), a pressure movable plate (11) is movably provided below the top support plate (9), the support guide column (2) movably passes through the pressure movable plate (11), the output end of the hydraulic cylinder (10) is connected to the pressure movable plate (11), an upper mold (12) is installed at the bottom of the pressure movable plate (11), an upper correction cavity (13) is provided inside the upper mold (12), and positioning sleeves (14) matching the positioning column (8) are symmetrically provided on the pressure movable plate (11).

3. The crankshaft blank forging and straightening die according to claim 2, characterized in that, The lower correction mold assembly (7) includes a lower mold (15), and a lower correction cavity (16) that cooperates with the upper correction cavity (13) is provided inside the lower mold (15). Several abutting through holes (18) are provided at the bottom of the lower mold (15), and semi-circular rotating grooves (17) are provided at both ends of the lower mold (15).

4. The crankshaft blank forging and straightening die according to claim 3, characterized in that, The synchronous lifting assembly (6) includes an inner support housing (19) fixed on the mounting support base (5). The inner support housing (19) has an inner cavity (20) inside, and the top of the inner support housing (19) has several through holes (21), and the through holes (21) correspond one-to-one with the abutting through holes (18).

5. A crankshaft blank forging and straightening die according to claim 4, characterized in that, The inner bottom of the inner support shell (19) is slidably provided with a push-connecting horizontal plate (23). A hydraulic telescopic rod (22) is installed on one end of the outer wall of the inner support shell (19). The output end of the hydraulic telescopic rod (22) is connected to the push-connecting horizontal plate (23). The other end of the push-connecting horizontal plate (23) is provided with a guide cavity (26). A guide post (27) extending into the guide cavity (26) is fixed on the inner wall of the inner support shell (19). An abutting component (24) that cooperates with the through hole (21) is provided on the push-connecting horizontal plate (23).

6. The crankshaft blank forging and straightening die according to claim 5, characterized in that, The abutment assembly (24) includes a fixing block (28) fixed on the push-connecting cross plate (23), an inclined push plate (29) is rotatably connected to the fixing block (28), and the other end of the inclined push plate (29) is rotatably connected to an inverted U-shaped seat (31) via a rotating shaft (30), and the top of the inverted U-shaped seat (31) is provided with an abutment post (25) that cooperates with the through hole (21).

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