A forging and injection mold for an automobile steering arm

Abstract

The present invention relates to the field of forging technology, and particularly relates to a forging and injection mold for an automotive steering arm, including an upper mold and a lower mold. The outer surface of the upper mold is respectively provided with an upper vertical section, a converging section, and a lower vertical section from top to bottom. First column cavities and second column cavities are respectively opened at the front and rear ends of the lower surface of the upper mold. An outward expanding opening is provided on the upper surface of the lower mold. A vertical cavity is provided at the lower end of the outward expanding opening. A mold cavity is provided at the lower end of the vertical cavity. A first mold column is fixedly inserted at the front end of the inner bottom surface of the mold cavity. A third mold column is slidably inserted through a lifting mechanism at the rear end of the inner bottom surface of the mold cavity. The upper end of the third mold column is fixedly connected to a second mold column. Concave blocks are respectively connected to both sides of the upper surface of the lower mold through elastic mechanisms. A limiting block is rotatably connected to one side of the concave block. The present invention can be adapted to the placement of workpieces, can enter the mold cavity during forging, and will not cause problems such as ejection, reducing the operation difficulty, and the demolding process is convenient and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of forging, and particularly relates to a forging injection mold for an automotive steering arm. Background Art

[0002] The automotive steering arm, also known as the trapezoidal arm, is a key component in the automotive steering system. It is the last-stage force-transmitting component of the steering transmission device, responsible for transmitting the steering force from the steering system to the wheels.

[0003] A forging mold refers to a tool that can form a blank into a die-forged part. In the forging process, the raw material undergoes plastic deformation in the forging die under the action of external force, thereby obtaining a part with the required shape and size. Forging molds can be divided into hot forging molds, warm forging molds, and cold forging molds according to different forging temperatures. These molds play a crucial role in the production of die-forged parts and are tools that need to be used in each stroke of the equipment. During the processing of connecting rod parts, the roughly formed workpiece needs to be heated and then placed in the mold for forging to improve the structural strength. However, due to its rod-shaped shape, it is prone to rotation problems when placed in the mold cavity, resulting in deviation of the forging position. In addition, after forging in the mold cavity, the demolding process is relatively inconvenient, and due to the high temperature during forging, direct handling operations cannot be carried out. Therefore, the production process needs to be improved. So, we propose a forging injection mold for an automotive steering arm. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the background art and propose a forging injection mold for an automotive steering arm.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a forging injection mold for an automotive steering arm, including an upper mold and a lower mold. The outer surface of the upper mold is provided with an upper vertical section, a converging section, and a lower vertical section from top to bottom. The front and rear ends of the lower surface of the upper mold are respectively provided with a first column cavity and a second column cavity. The upper surface of the lower mold is provided with an outwardly expanding opening. The lower end of the outwardly expanding opening is provided with a vertical cavity. The lower end of the vertical cavity is provided with a mold cavity. The front end of the inner bottom surface of the mold cavity is fixedly inserted with a first mold column. The rear end of the inner bottom surface of the mold cavity is slidably inserted with a third mold column through a lifting mechanism. The upper end of the third mold column is fixedly connected with a second mold column. The two sides of the upper surface of the lower mold are respectively connected with concave blocks through elastic mechanisms. One side of the concave block is rotatably connected with a limiting block;

[0006] The workpiece is placed between the limiting blocks on both sides. The first hole sleeve is sleeved on the outer surface of the first mold column, and the second hole sleeve is sleeved on the outer surface of the third mold column;

[0007] When the upper mold presses down for forging, the lower vertical section is inserted into the inner side of the vertical cavity, and the converging section is inserted into the inner side of the outwardly expanding opening.

[0008] Preferably, an upper mounting frame is fixedly connected to the upper surface of the upper die, and lower mounting frames are respectively arranged on both sides of the lower surface of the lower die.

[0009] Preferably, a lower notch is formed in the lower surface of the lower die. The lifting mechanism includes a lifting plate that slidably fits into the inner side of the lower notch. The lower end of the third column is fixedly connected to the upper surface of the lifting plate. The telescopic end of a telescopic cylinder is fixedly connected to the upper surface of the lifting plate at the rear end. The outer surface of the telescopic cylinder is fixedly connected to the rear surface of the lower die.

[0010] Preferably, the lower end of the first column is fixedly connected to the inner top surface of the lower notch through a first mounting plate. The lower end of the third column is fixedly connected to the upper surface of the lifting plate through a second mounting plate. The telescopic end of the telescopic cylinder is fixedly connected to the upper surface of the lifting plate through a third mounting plate. The outer surface of the telescopic cylinder is fixedly connected to the rear surface of the lower die through a mounting seat.

[0011] Preferably, the elastic mechanism includes a fixed seat fixedly connected to the side surface of the lower die. The concave block slidably fits into the inner side of the fixed seat. A guide rod is fixedly connected to the side of the concave block away from the limiting block. The guide rod slidably penetrates through one side of the fixed seat and is fixedly connected with a limiting head at the end. A compression spring is sleeved on the outer surface of the guide rod.

[0012] Preferably, beveled edges are respectively formed on the upper and lower sides of one side of the limiting block.

[0013] Preferably, an extension block is arranged on the side of the limiting block close to the concave block. Rotating shafts are respectively fixedly connected to the front and rear surfaces of the extension block, and the rotating shafts are rotatably embedded in the inner wall of the concave block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The workpiece to be processed is placed between the limiting blocks on both sides. The first hole sleeve is sleeved on the outer surface of the first column, and the second hole sleeve is sleeved on the outer surface of the third column. The upper die is fixed to the stamping end of the forging machine through the upper mounting frame. When the upper die is pressed down for forging, since the inclined surface of the converging section will push the limiting block, the limiting block can be laterally displaced to move away, squeezing the compression spring. Therefore, it will not affect the forging process. During forging, the lower vertical section is inserted into the inner side of the vertical cavity, and the converging section is inserted into the inner side of the outward expansion opening, so that the workpiece is forged and formed in the die cavity. At the upper end of the third column, it assists the workpiece to form a countersunk head. Therefore, it can be adapted to the placement of the workpiece and can enter the die cavity during forging, and problems such as popping out will not occur, reducing the operation difficulty.

[0016] 2. During the demolding of the present invention, the upper mold is preferentially moved upward, and then the telescopic cylinder is controlled to contract, causing the lifting plate to move upward. The upper end of the third column is located within the counterbore, so the workpiece can be lifted. Since the workpiece may rotate relative to the third column during the lifting process, one side of the workpiece will be located below the limit block. When the limit block is lifted, the limit block will rotate about the rotating shaft, thus not affecting the demolding process. Therefore, the demolding is convenient and fast. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural view of a forging and injection mold for an automotive steering arm according to the present invention;

[0018] Figure 2 is a sectional view of the upper mold of a forging and injection mold for an automotive steering arm according to the present invention;

[0019] Figure 3 is a sectional view of the lower mold of a forging and injection mold for an automotive steering arm according to the present invention;

[0020] Figure 4 is a schematic view of the elastic mechanism of a forging and injection mold for an automotive steering arm according to the present invention;

[0021] Figure 5 is a state diagram during processing of a forging and injection mold for an automotive steering arm according to the present invention;

[0022] Figure 6 is a schematic view when forging and clamping the mold of a forging and injection mold for an automotive steering arm according to the present invention;

[0023] Figure 7 is a forging and injection mold for an automotive steering arm according to the present invention Figure 6 enlarged view at A;

[0024] Figure 8 is a schematic view of the workpiece of a forging and injection mold for an automotive steering arm according to the present invention;

[0025] Figure 9 is a sectional view of the workpiece of a forging and injection mold for an automotive steering arm according to the present invention.

[0026] 1. Upper die; 2. Upper vertical section; 3. Converging section; 4. Lower vertical section; 5. First column cavity; 6. Second column cavity; 7. Lower die; 8. Mold cavity; 9. Vertical cavity; 10. Outer flared opening; 11. First type column; 12. First mounting plate; 13. Second type column; 14. Third type column; 15. Second mounting plate; 16. Lifting plate; 17. Third mounting plate; 18. Telescopic cylinder; 19. Mounting seat; 20. Lower notch; 21. Limit block; 22. Beveled edge; 23. Concave block; 24. Extension block; 25. Rotating shaft; 26. Fixed seat; 27. Guide rod; 28. Compression spring; 29. Limit head; 30. Upper mounting frame; 31. Lower mounting frame; 32. Workpiece; 33. First type hole; 34. Second type hole; 35. Countersunk head. Detailed implementation manner

[0027] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0028] As Figures 1-9 shown, a forging and injection mold for an automotive steering arm includes an upper die 1 and a lower die 7. The outer surface of the upper die 1 is respectively provided with an upper vertical section 2, a converging section 3 and a lower vertical section 4 from top to bottom. The front and rear ends of the lower surface of the upper die 1 are respectively provided with a first column cavity 5 and a second column cavity 6. The upper surface of the lower die 7 is provided with an outer flared opening 10. The lower end of the outer flared opening 10 is provided with a vertical cavity 9. The lower end of the vertical cavity 9 is provided with a mold cavity 8. The front end of the inner bottom surface of the mold cavity 8 is fixedly inserted with a first type column 11. The third type column 14 is slidably inserted through a lifting mechanism at the rear end of the inner bottom surface of the mold cavity 8. The upper end of the third type column 14 is fixedly connected with a second type column 13. The two sides of the upper surface of the lower die 7 are respectively connected with a concave block 23 through an elastic mechanism. One side of the concave block 23 is rotatably connected with a limit block 21;

[0029] The structure of the workpiece 32 is as Figure 7 、 Figure 8 shown.

[0030] As Figure 5 shown, during use, the workpiece 32 is placed between the limit blocks 21 on both sides. The first type hole 33 is sleeved on the outer surface of the first type column 11, and the second type hole 34 is sleeved on the outer surface of the third type column 14;

[0031] As Figure 6 、 Figure 7 shown, when the upper die 1 presses down for forging, the lower vertical section 4 is inserted into the inner side of the vertical cavity 9, and the converging section 3 is inserted into the inner side of the outer flared opening 10.

[0032] As Figure 1As shown in the figure, an upper mounting bracket 30 is fixedly connected to the upper surface of the upper die 1, and lower mounting brackets 31 are respectively arranged on both sides of the lower surface of the lower die 7. A plurality of through holes are respectively formed through the surfaces of the upper mounting bracket 30 and the lower mounting bracket 31 to facilitate fixing on the mounting surface by bolts. During use, the lower mounting bracket 31 is fixed on the processing table, and the upper mounting bracket 30 is fixed to the stamping end of the forging machine.

[0033] As Figure 1 , Figure 3 shown in the figure, a lower concave notch 20 is formed on the lower surface of the lower die 7. The lifting mechanism includes a lifting plate 16 that is slidably inserted into the inner side of the lower concave notch 20. The lower end of the third column 14 is fixedly connected to the upper surface of the lifting plate 16. The telescopic end of a telescopic cylinder 18 is fixedly connected to the rear end of the upper surface of the lifting plate 16. The outer surface of the telescopic cylinder 18 is fixedly connected to the rear surface of the lower die 7. The telescopic cylinder 18 is selected as a hydraulic cylinder to provide sufficient ejection force to eject the workpiece 32 clamped in the mold cavity 8 during forging.

[0034] The lower end of the first column 11 is fixedly connected to the inner top surface of the lower concave notch 20 through a first mounting plate 12. The lower end of the third column 14 is fixedly connected to the upper surface of the lifting plate 16 through a second mounting plate 15. The telescopic end of the telescopic cylinder 18 is fixedly connected to the upper surface of the lifting plate 16 through a third mounting plate 17. The first mounting plate 12, the second mounting plate 15 and the third mounting plate 17 are used to increase the mounting area at the connection and improve the stability of the mounting. The outer surface of the telescopic cylinder 18 is fixedly connected to the rear surface of the lower die 7 through a mounting seat 19 to ensure the stable mounting of the telescopic cylinder 18.

[0035] As Figure 2 , Figure 3 shown in the figure, the elastic mechanism includes a fixed seat 26 fixedly connected to the side surface of the lower die 7. A concave block 23 is slidably inserted into the inner side of the fixed seat 26. A guide rod 27 is fixedly connected to the side of the concave block 23 away from the limiting block 21. The guide rod 27 slidably penetrates through one side of the fixed seat 26 and a limiting head 29 is fixedly connected to the end. A compression spring 28 is sleeved on the outer surface of the guide rod 27. When the limiting block 21 is squeezed, the concave block 23 will horizontally move along the inner side of the fixed seat 26, squeezing the compression spring 28. The limiting head 29 can play a limiting role to prevent the end of the guide rod 27 from detaching from the fixed seat 26 under the elastic force of the compression spring 28.

[0036] Bevel edges 22 are respectively formed on the upper and lower sides of one side of the limiting block 21 to prevent the edge of the limiting block 21 from being too sharp and scratching the converging section 3 or the workpiece 32 during forging.

[0037] An extension block 24 is arranged on the side of the limiting block 21 close to the concave block 23. Rotating shafts 25 are respectively fixedly connected to the front and rear surfaces of the extension block 24. The rotating shafts 25 are rotatably embedded in the inner wall of the concave block 23. The limiting block 21 will rotate around the rotating shaft 25.

[0038] The user first places the workpiece 32 between the limiting blocks 21 on both sides. The first type hole 33 is sleeved on the outer surface of the first type column 11, and the second type hole 34 is sleeved on the outer surface of the third type column 14. The upper die 1 is fixed to the stamping end of the forging machine through the upper mounting frame 30. When the upper die 1 presses down for forging, since the inclined surface of the converging section 3 will push the limiting block 21, the limiting block 21 can be laterally displaced to compress the compression spring 28, so it will not affect the forging process. During forging, the lower vertical section 4 is inserted into the inner side of the vertical cavity 9, and the converging section 3 is inserted into the inner side of the outer flared opening 10, so that the workpiece 32 is forged and formed in the die cavity 8. At the upper end of the third type column 14, it assists the workpiece 32 to form a countersunk head 35. Therefore, it can be adapted to the placement of the workpiece 32 and can enter the die cavity 8 during forging without problems such as popping out, reducing the operation difficulty.

[0039] During demoulding, the upper die 1 is first lifted upwards, and then the telescopic cylinder 18 is controlled to contract, so that the lifting plate 16 moves upwards. The upper end of the third type column 14 is located inside the countersunk head 35, so the workpiece 32 can be lifted. Since the workpiece 32 may rotate relative to the third type column 14 during lifting, one side of the workpiece 32 will be located below the limiting block 21. When the limiting block 21 is lifted, the limiting block 21 will rotate around the rotating shaft 25, thus not affecting the demoulding process. Therefore, demoulding is convenient and fast.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A forging injection mold for an automobile steering arm, comprising an upper mold (1) and a lower mold (7), characterized in that: The outer surface of the upper mold (1) is respectively provided with an upper vertical section (2), a retracting section (3) and a lower vertical section (4) from top to bottom; the lower surface of the upper mold (1) is respectively provided with a first column cavity (5) and a second column cavity (6) at the front and rear ends; the upper surface of the lower mold (7) is provided with an outer expansion opening (10); the lower end of the outer expansion opening (10) is provided with a vertical cavity (9); the lower end of the vertical cavity (9) is provided with a mold cavity (8); a first column (11) is fixedly inserted at the front end of the inner bottom surface of the mold cavity (8); a third column (14) is slidably inserted at the rear end of the inner bottom surface of the mold cavity (8) through a lifting mechanism; the upper end of the third column (14) is fixedly connected to the second column (13); concave blocks (23) are respectively connected to the two sides of the upper surface of the lower mold (7) through elastic mechanisms; one side of the concave block (23) is rotatably connected to the limit block (21); The processing piece (32) is placed between the limit blocks (21) on both sides, the first type hole (33) of the processing piece (32) is sleeved on the outer surface of the first type column (11), and the second type hole (34) of the processing piece (32) is sleeved on the outer surface of the third type column (14); When the upper die (1) is pressed downward for forging, the lower vertical section (4) is inserted into the inner side of the vertical cavity (9), and the contracted section (3) is inserted into the inner side of the outer expansion opening (10); The lower surface of the lower mold (7) is provided with a lower notch (20), the lifting mechanism comprises a lifting plate (16) which is slidably inserted into the inner side of the lower notch (20), the lower end of the third column (14) is fixedly connected to the upper surface of the lifting plate (16), the rear end of the upper surface of the lifting plate (16) is fixedly connected to the telescopic end of the telescopic cylinder (18), and the outer surface of the telescopic cylinder (18) is fixedly connected to the rear surface of the lower mold (7); The lower end of the first type column (11) is fixedly connected to the inner top surface of the lower recess (20) via a first mounting plate (12), the lower end of the third type column (14) is fixed to the upper surface of the lifting plate (16) via a second mounting plate (15), the telescopic end of the telescopic cylinder (18) is fixed to the upper surface of the lifting plate (16) via a third mounting plate (17), and the outer surface of the telescopic cylinder (18) is fixed to the rear surface of the lower mold (7) via a mounting seat (19); The elastic mechanism comprises a fixing seat (26) fixedly connected to the side surface of the lower mold (7), the concave block (23) is slidably inserted into the inner side of the fixing seat (26), a guide rod (27) is fixedly connected to the side of the concave block (23) away from the limit block (21), the guide rod (27) slides through one side of the fixing seat (26) and is fixedly connected to the limit head (29) at the end, and a compression spring (28) is sleeved on the outer surface of the guide rod (27); The upper and lower edges of one side of the limit block (21) are respectively provided with chamfered edges (22); An extension block (24) is provided on one side of the limit block (21) close to the concave block (23); a rotating shaft (25) is fixedly connected to the front and rear surfaces of the extension block (24), respectively; and the rotating shaft (25) is rotatably embedded in the inner wall of the concave block (23).

2. The forging injection mold for an automobile steering arm according to claim 1, characterized in that: An upper mounting frame (30) is fixedly connected to the upper surface of the upper die (1), and lower mounting frames (31) are respectively provided on both sides of the lower surface of the lower die (7).

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