A quick-assembly die-casting mold base for transmission crankshafts

Abstract

This invention discloses a rapidly assembled transmission crankshaft die-casting mold base, belonging to the technical field of crankshaft mold bases. The rapidly assembled transmission crankshaft die-casting mold base includes a mold and two mold bases for fixing the mold. The mold includes an upper mold and a lower mold, arranged between the two mold bases. One side of the upper and lower molds is a mounting surface with a mounting groove. A retaining groove is formed on the bottom side of the mounting groove. One side of the two mold bases is a receiving surface, with several clamping blocks slidably arranged on the receiving surface. One end of each clamping block is located inside the mounting groove, and a retaining block is installed at one end of each clamping block, located inside a retaining groove. A pushing component is arranged between the clamping blocks. A limiting pin passes through the bottom of each retaining block. A limiting hole for cooperating with the limiting pin is formed inside the retaining groove. An adjusting component is provided inside each clamping block, and a reset component is provided on the receiving surface. This allows for rapid disassembly and assembly between the mold and the mold base.

Description

Technical Field

[0001] This invention relates to the field of crankshaft mold base technology, and more specifically, to a transmission crankshaft die-casting mold base that can be quickly assembled and formed. Background Technology

[0002] The crankshaft is the most important component in 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 accessories on 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] Some crankshafts are produced using die casting, and mold frames are installed at both ends of the mold to connect the mold and the processing equipment. Currently, the mold and mold frame are fixed with interference fit or bolts. If either the mold or the mold frame is damaged, maintenance is troublesome, affecting the efficiency of later maintenance, and may even lead to the mold and mold frame becoming unusable. The cost is high. To address the above problems, a solution is proposed below. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a transmission crankshaft die-casting mold base that can be quickly assembled and formed, enabling rapid disassembly and installation between the mold and the mold base.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A quick-assembly die-casting mold base for a transmission crankshaft includes a mold and two mold bases for fixing the mold, wherein the mold includes an upper mold and a lower mold;

[0007] The upper mold and the lower mold are arranged vertically between two mold frames. The side of the upper mold and the lower mold closest to the mold frame is a mounting surface. A mounting groove is provided on the mounting surface, and a ring of slots is provided on the bottom side of the mounting groove.

[0008] The two mold frames are configured with a receiving surface on the side near the mounting surface. Several clamping blocks with inclined inner sides are slidably arranged on the receiving surface. The clamping blocks are arranged radially around the same center. One end of each clamping block is located inside the mounting groove. A locking block is installed at one end of each clamping block. The locking block is located inside the locking groove. A pushing component for pushing the clamping block to move is provided between the clamping blocks.

[0009] A limiting pin is provided at the bottom of the card block, and a limiting hole is provided inside the card slot for cooperating with the limiting pin. An adjusting component for adjusting the limiting pin is provided inside the clamping block, and the adjusting component passes through the inclined surface of the clamping block and cooperates with the pushing component.

[0010] The receiving surface is provided with a reset component for adjusting the component reset.

[0011] Furthermore, the pushing assembly includes a lead screw, a frustum-shaped push block, a worm gear, and a worm. A notch is provided on the receiving surface, and a rotating rod is rotatably disposed inside the notch. One end of the lead screw is fixed to the rotating rod. The push block is sleeved on the lead screw and threadedly engaged. The inclined surfaces of the push block and several clamping blocks are in contact with each other. The worm gear is sleeved on and fixed to the rotating rod. The worm and the worm gear mesh with each other. The worm is rotatably arranged inside the notch, and one end of the worm passes through the notch and is located outside the mold frame.

[0012] Furthermore, the adjusting assembly includes a bent connecting rod, a rocker arm, and an elastic metal sheet. The clamping block has a placement groove inside, with one end of the groove opening to allow insertion of one end of the resetting assembly. The connecting rod is slidably arranged inside the placement groove, with one end of the connecting rod fixedly connected to one end of a limiting pin. The rocker arm is rotatably arranged inside the placement groove, with the rocker arm and connecting rod arranged crosswise. The clamping block has an opening near the inclined surface for one end of the rocker arm to extend out. The rocker arm has a sliding groove, with a sliding rod slidably disposed inside the groove. One end of the sliding rod is fixedly connected to the side of the connecting rod. One end of the elastic metal sheet is fixed to one end of the rocker arm, and the other end of the elastic metal sheet is in contact with the side of the placement groove.

[0013] Furthermore, the reset assembly includes a push rod and a top plate. The top plate is located between the clamping block and the mold frame. The top plate and the mold frame are rotatably engaged. One end of the top plate is located at the top of the recess. A guide groove is provided on the top plate. One end of the push rod passes through the guide groove and is slidably engaged. A concave arc is provided on the outer arc surface of the push rod. The concave arc and the guide groove are slidably engaged.

[0014] Furthermore, a sliding groove is provided at one end of the clamping block near the receiving surface, and a sliding rail is slidably disposed inside the sliding groove, the sliding rail being fixedly connected to the receiving surface.

[0015] Furthermore, two semi-cylindrical protrusions are fixedly installed on the inner side of the placement groove to limit the elastic metal sheet.

[0016] Furthermore, a storage groove is provided at the bottom side of the clamping block, and an elastic rubber ring for resetting is provided inside the storage groove.

[0017] Furthermore, a rotating ring is fixedly connected to one end of the worm gear located outside the notch to facilitate rotation.

[0018] Furthermore, a guide rod is provided inside the notch to prevent the push block from rotating.

[0019] Compared with the prior art, the advantages of this invention are:

[0020] 1. This solution uses mounting slots on the mounting surfaces of the upper and lower molds, and clamping blocks on the mold frame mounting surface for engagement. The upper and lower molds are positioned by the mounting slots and clamping blocks. By rotating the worm gear, the worm gear drives the worm wheel to rotate, which in turn drives the lead screw to rotate. The lead screw and push block are threaded together, and the push rod is limited by the guide rod, allowing the push rod to move vertically up and down. Simultaneously, the push block pushes the inclined surface of the clamping block to move, thereby pushing the clamping block and the locking block into the locking slot. The engagement of the locking block and the locking slot fixes the mold frame and mold.

[0021] 2. When the push block moves the clamping block to the designated position, the continued movement of the push block will act on the rocker arm. The rotation of the rocker arm will cause the slide groove to rotate, which in turn will cause the slide rod to move. The slide rod will then cause the connecting rod to move, thereby causing the limiting pin to insert into the limiting hole. At the same time, the rocker arm will cause the elastic metal piece to move, moving it from one side of the semi-circular cylindrical protrusion to the other side of the semi-circular cylindrical protrusion. The semi-circular cylindrical protrusion limits the rocker arm, so that when the push block returns to its original position, the limiting pin remains fixed to the limiting hole, ensuring safety.

[0022] 3. When the push block is reset, the push block will act on one end of the top plate, causing the top plate to rotate around the hinge. This causes the end of the top plate away from the push block to tilt up, which in turn causes the push rod to tilt up. The push rod then acts on the bottom of the connecting rod, thereby causing the connecting rod to reset. The guide groove and concave arc allow the push rod to slide on the top plate and ensure that it remains in a vertical position.

[0023] Fourth, the worm gear and worm drive ensure that the worm gear can only be driven to rotate by the worm, and the worm gear cannot drive the worm to rotate in the opposite direction. This has a certain self-locking effect, which improves safety. At the same time, the clamping block can be moved by simply rotating the worm, so as to complete the installation of the mold and mold frame and ensure work efficiency.

[0024] 5. A pusher block is used to simultaneously move four clamping blocks. The four clamping blocks will open in four directions at the same time, ensuring that the upper and lower molds are in the middle of the mold frame, avoiding deviations during installation and ensuring wedge fit. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram illustrating the structure of the push block and clamping block of the present invention;

[0027] Figure 3This is a schematic cross-sectional view of the mold frame structure of the present invention;

[0028] Figure 4 This is an enlarged schematic diagram of invention A.

[0029] Figure 5 This is an enlarged schematic diagram of invention B;

[0030] Figure 6 This is a structural schematic diagram of the top plate and top rod used in this invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Mold; 2. Mold frame; 3. Upper mold; 4. Lower mold; 5. Mounting surface; 6. Mounting groove; 7. Slot; 8. Receiving surface; 9. Clamping block; 10. Locking block; 11. Pushing assembly; 12. Limiting pin; 13. Limiting hole; 14. Adjusting assembly; 15. Reset assembly; 16. Lead screw; 17. Push block; 18. Worm gear; 19. Worm; 20. Notch; 21. Connecting rod; 22. Rocker arm; 23. Elastic metal sheet; 24. Placement groove; 25. Sliding groove; 26. Sliding rod; 27. Push rod; 28. Top plate; 29. ​​Guide groove; 30. Concave arc; 31. Sliding groove; 32. Sliding rail; 33. Semi-cylindrical protrusion; 34. Storage groove; 35. Elastic rubber ring; 36. Rotary ring; 37. Guide rod. Detailed Implementation

[0033] Please see Figure 1 A quick-assembly die-casting mold frame for a transmission crankshaft includes a mold 1 and two mold frames 2 for fixing the mold 1. The mold 1 includes an upper mold 3 and a lower mold 4.

[0034] Please see Figure 3 The upper mold 3 and the lower mold 4 are distributed vertically and arranged between the two mold frames 2. The side of the upper mold 3 and the lower mold 4 closest to the mold frame 2 is the mounting surface 5. The mounting surface 5 is provided with a mounting groove 6, and a ring of slots 7 is provided on the bottom side of the mounting groove 6.

[0035] Please see Figure 2 , Figure 3 and Figure 4Two mold frames 2 are configured with a receiving surface 8 on the side near the mounting surface 5. Several clamping blocks 9 with inclined inner sides are slidably mounted on the receiving surface 8, arranged radially around the same center. A storage groove 34 is provided at the bottom side of each clamping block 9, and an elastic rubber ring 35 for repositioning is provided inside the storage groove 34. A sliding groove 31 is provided at the end of each clamping block 9 near the receiving surface 8, and a sliding rail 32 is slidably mounted inside the sliding groove 31. The sliding rail 32 is fixedly connected to the receiving surface 8. One end of each clamping block 9 is located inside the mounting groove 6, and a locking block 10 is mounted at one end of each clamping block 9, located inside the locking groove 7. A pushing assembly 11 for moving the clamping blocks 9 is provided between the clamping blocks 9. Component 11 includes a lead screw 16, a frustum-shaped push block 17, a worm gear 18, and a worm 19. A notch 20 is provided on the receiving surface 8. A guide rod 37 is provided inside the notch 20 to prevent the push block 17 from rotating. A rotating rod is rotatably provided inside the notch 20. One end of the lead screw 16 is fixed to the rotating rod. The push block 17 is sleeved on the lead screw 16 and threaded. The inclined surfaces of the push block 17 and several clamping blocks 9 are in contact with each other. The worm gear 18 is sleeved on and fixed to the rotating rod. The worm 19 and the worm gear 18 mesh with each other. The worm 19 is rotatably arranged inside the notch 20. One end of the worm 19 passes through the notch 20 and is located outside the mold frame 2. The end of the worm 19 located outside the notch 20 is fixedly connected to a rotating ring 36 for easy rotation.

[0036] The upper mold 3 and lower mold 4 are respectively provided with mounting grooves 6 and clamping blocks 9 on the mounting surface 5 of the mold frame 2. The upper mold 3 and lower mold 4 are positioned by mounting grooves 6 and clamping blocks 9. By rotating the worm gear 19, the worm gear 19 drives the worm wheel 18 to rotate, and the worm wheel 18 drives the lead screw 16 to rotate. The lead screw 16 and push block 17 are threaded together, and the push rod is limited by the guide rod 37, so that the push rod moves vertically up and down. The push block 17 pushes the inclined surface of the clamping block 9 to move, thereby pushing the clamping block 9 and the locking block 10 into the locking groove 7. The locking block 10 and the locking groove 7 fix the mold frame 2 and mold 1.

[0037] The worm gear 18 and worm 19 are driven so that the worm gear 18 can only be rotated by the worm 19, and the worm gear 18 cannot drive the worm 19 to rotate in the opposite direction. This has a certain self-locking effect and improves safety. At the same time, the movement of the clamping block 9 can be driven by simply rotating the worm 19 to complete the installation of the mold 1 and the mold frame 2, ensuring work efficiency. One push block 17 is used to push the four clamping blocks 9 to move at the same time. The four clamping blocks 9 will open in four directions at the same time, ensuring that the upper mold 3 and the lower mold 4 are in the middle of the mold frame 2, avoiding deviation during installation and ensuring wedge fit.

[0038] Please see Figure 5A limiting pin 12 is provided at the bottom of the clamping block 10. A limiting hole 13 is provided inside the clamping groove 7 for cooperating with the limiting pin 12. An adjusting component 14 for adjusting the limiting pin 12 is provided inside the clamping block 9. The adjusting component 14 passes through the inclined surface of the clamping block 9 and cooperates with the pushing component 11. The adjusting component 14 includes a bent connecting rod 21, a rocker arm 22 and an elastic metal sheet 23. A placement groove 24 is provided inside the clamping block 9. One end of the placement groove 24 is open to allow one end of the reset component 15 to be inserted at the bottom of the clamping block 9. The connecting rod 21 is slidably arranged inside the placement groove 24. One end of the connecting rod 21 and the limiting pin 12 are connected to the limiting pin 12. The rocker arm 22 is rotatably arranged inside the placement groove 24. The rocker arm 22 and the connecting rod 21 are arranged crosswise. The clamping block 9 has an opening at one end near the inclined surface for one end of the rocker arm 22 to extend out. The rocker arm 22 has a sliding groove 25. A sliding rod 26 is slidably arranged inside the sliding groove 25. One end of the sliding rod 26 is fixedly connected to the side of the connecting rod 21. One end of the elastic metal sheet 23 is fixed to one end of the rocker arm 22, and the other end of the elastic metal sheet 23 is in contact with the side of the placement groove 24. Two semi-cylindrical protrusions 33 are fixedly installed on the inner side of the placement groove 24 to limit the elastic metal sheet 23.

[0039] When push block 17 moves clamping block 9 to the designated position, the continued movement of push block 17 will act on rocker arm 22. The rotation of rocker arm 22 will drive slide groove 25 to rotate, slide groove 25 will drive slide rod 26 to move, slide rod 26 will drive connecting rod 21 to move, thereby connecting rod 21 will drive limiting pin 12 to be inserted into limiting hole 13. At the same time, rocker arm 22 will drive elastic metal piece 23 to move, so that elastic metal piece 23 moves from one side of the semi-circular cylindrical protrusion to the other side of the semi-circular cylindrical protrusion. The semi-circular cylindrical protrusion limits rocker arm 22, so that when push block 17 is reset, limiting pin 12 is still fixed to limiting hole 13, ensuring safety.

[0040] Please see Figure 5 and Figure 6 The receiving surface 8 is provided with a reset component 15 for resetting the adjustment component 14. The reset component 15 includes a push rod 27 and a top plate 28. The top plate 28 is located between the clamping block 9 and the mold frame 2. The top plate 28 and the mold frame 2 are rotatably engaged. One end of the top plate 28 is located at the top of the recess 20. A guide groove 29 is provided on the top plate 28. One end of the push rod 27 passes through the guide groove 29 and is slidably engaged. A concave arc 30 is provided on the outer arc surface of the push rod 27. The concave arc 30 and the guide groove 29 are slidably engaged.

[0041] When the push block 17 is reset, it will act on one end of the top plate 28, causing the top plate 28 to rotate around the hinge. This causes the end of the top plate 28 away from the push block 17 to tilt up. The top plate 28 will then cause the push rod 27 to tilt up. The push rod 27 will act on the bottom of the connecting rod 21, thereby causing the connecting rod 21 to reset. The guide groove 29 and the concave arc 30 allow the push rod 27 to slide on the top plate 28 and ensure that it remains in a vertical state.

[0042] Working principle:

[0043] Align the mounting grooves 6 on the mounting surfaces 5 of the upper mold 3 and lower mold 4 with the clamping blocks 9 on the receiving surfaces 8 of the mold frame 2. Insert the clamping blocks 9 into the mounting grooves 6 so that the mounting surfaces 5 and the receiving surfaces 8 fit together. Rotate the worm gear 19. The rotating ring 36 on the outside of the worm gear 19 facilitates the application of force to the worm gear 19. The rotation of the worm gear 19 drives the worm wheel 18 to rotate, and the worm wheel 18 drives the lead screw 16 to rotate. Due to the threaded fit between the lead screw 16 and the push block 17, and the fact that the push block 17 is limited by the guide rod 37, the rotation of the lead screw 16 drives the push rod to move vertically upward along the lead screw 16. Thus, the inclined surface of the push block 17 will act on the inclined surface of the clamping block 9. That is, the push block 17 simultaneously pushes the clamping block 9 to move along the sliding rail 32. The clamping block 9 will drive the locking block 10 to engage in the slot 7. The continued movement of the push block 17 will act on one end of the rocker arm 22, thus causing the rocker arm 22 to rotate. When the rocker arm 22 moves, it drives the slide groove 25 to move, the slide groove 25 drives the slide rod 26 to move, the slide rod 26 drives the connecting rod 21 to move, and the connecting rod 21 drives the limiting pin 12 to move, so that the limiting pin 12 is inserted into the limiting hole 13. At the same time, the movement of the rocker arm 22 will drive the elastic metal piece 23 to move. The elastic metal piece 23 moves through one semi-cylindrical protrusion 33 to another semi-cylindrical protrusion 33, and the semi-cylindrical protrusion 33 limits the rocker arm 22, thereby completing the installation between the mold frame 2 and the mold 1. When it is necessary to remove it, the worm gear 19 is rotated in the opposite direction, thereby driving the push block 17 to move in the opposite direction. When the push block 17 is retracted into the mounting groove 6, the push block 17 will act on one end of the top plate 28, so that the top plate 28 will drive the push rod 27 to move, and the push rod 27 will push the connecting rod 21, thereby making the connecting rod 21 reset.

Claims

1. A quick-assembly and forming transmission crankshaft die-casting mold base, characterized in that: It includes a mold (1) and two mold frames (2) for fixing the mold (1), the mold (1) including an upper mold (3) and a lower mold (4); The upper mold (3) and the lower mold (4) are arranged vertically and between two mold frames (2). The side of the upper mold (3) and the lower mold (4) closest to the mold frame (2) is a mounting surface (5). A mounting groove (6) is provided on the mounting surface (5). A ring of slots (7) is provided on the bottom side of the mounting groove (6). The two mold frames (2) are configured with a receiving surface (8) on the side near the mounting surface (5). Several clamping blocks (9) with inclined inner sides are slidably arranged on the receiving surface (8). The clamping blocks (9) are arranged radially around the same center. One end of the clamping block (9) is located inside the mounting groove (6). A locking block (10) is installed on one end of the clamping block (9). The locking block (10) is located inside the locking groove (7). A pushing component (11) for pushing the clamping block (9) to move is provided between the clamping blocks (9). The bottom of the card block (10) is provided with a limiting pin (12), and the inside of the card slot (7) is provided with a limiting hole (13) for cooperating with the limiting pin (12). The inside of the clamping block (9) is provided with an adjusting component (14) for adjusting the limiting pin (12). The adjusting component (14) passes through the inclined surface of the clamping block (9) and cooperates with the pushing component (11). The receiving surface (8) is provided with a reset component (15) for resetting the adjustment component (14). The pushing assembly (11) includes a lead screw (16), a frustum-shaped push block (17), a worm wheel (18), and a worm (19). A notch (20) is provided on the receiving surface (8). A rotating rod is rotatably arranged inside the notch (20). One end of the lead screw (16) is fixed on the rotating rod. The push block (17) is sleeved on the lead screw (16) and threaded. The inclined surfaces of the push block (17) and several clamping blocks (9) are in contact with each other. The worm wheel (18) is sleeved on and fixed on the rotating rod. The worm (19) and the worm wheel (18) mesh with each other. The worm (19) is rotatably arranged inside the notch (20). One end of the worm (19) passes through the notch (20) and is located outside the mold frame (2). The adjusting assembly (14) includes a bent connecting rod (21), a rocker arm (22), and an elastic metal sheet (23). The clamping block (9) has a placement groove (24) inside. One end of the placement groove (24) is open to the bottom of the clamping block (9) for the insertion of one end of the resetting assembly (15). The connecting rod (21) is slidably arranged inside the placement groove (24). One end of the connecting rod (21) is fixedly connected to one end of the limiting pin (12). The rocker arm (22) is rotatably arranged inside the placement groove (24). (22) and connecting rod (21) are arranged in a cross manner. The clamping block (9) has an opening at one end near the inclined surface for one end of the rocker arm (22) to extend out. The rocker arm (22) has a sliding groove (25). A sliding rod (26) is slidably arranged inside the sliding groove (25). One end of the sliding rod (26) is fixedly connected to the side of the connecting rod (21). One end of the elastic metal sheet (23) is fixed to one end of the rocker arm (22), and the other end of the elastic metal sheet (23) is in contact with the side of the placement groove (24). The reset assembly (15) includes a push rod (27) and a top plate (28). The top plate (28) is located between the clamping block (9) and the mold frame (2). The top plate (28) and the mold frame (2) are rotatably engaged. One end of the top plate (28) is located at the top of the recess (20). A guide groove (29) is provided on the top plate (28). One end of the push rod (27) passes through the guide groove (29) and is slidably engaged. A concave arc (30) is provided on the outer arc surface of the push rod (27). The concave arc (30) and the guide groove (29) are slidably engaged.

2. The transmission crankshaft die-casting mold frame for rapid assembly and forming according to claim 1, characterized in that: The clamping block (9) has a sliding groove (31) at one end near the receiving surface (8), and a sliding rail (32) is slidably arranged inside the sliding groove (31). The sliding rail (32) is fixedly connected to the receiving surface (8).

3. The transmission crankshaft die-casting mold frame for rapid assembly and forming according to claim 1, characterized in that: Two semi-cylindrical protrusions (33) are fixedly installed on the inner side of the placement groove (24) to limit the elastic metal sheet (23).

4. The transmission crankshaft die-casting mold frame for rapid assembly and forming according to claim 1, characterized in that: The clamping block (9) has a storage groove (34) at the bottom of its side, and an elastic rubber ring (35) for resetting is provided inside the storage groove (34).

5. The transmission crankshaft die-casting mold frame for rapid assembly and forming according to claim 1, characterized in that: The worm (19) is fixedly connected to a rotating ring (36) at one end outside the notch (20) for easy rotation.

6. The transmission crankshaft die-casting mold base for rapid assembly and forming according to claim 1, characterized in that: The recess (20) is provided with a guide rod (37) to prevent the push block (17) from rotating.

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