A multi-directional swage valve cover forming apparatus and method

Abstract

The present application relates to valve cover forging technical field, disclose a kind of multi-direction die forging valve cover forming device and method, wherein, forming device includes forging table, the lower die assembly is fixedly installed in the table top of forging table, the upper die assembly is fixedly installed in the top of forging table, the upper die assembly and lower die assembly are used to up and down die forging valve cover, the inside of forging table is fixedly installed with knockout assembly, the knockout end of knockout assembly is located in the inside of lower die assembly, the both ends of forging table are fixedly installed with horizontal die forging mechanism, horizontal die forging mechanism is used for horizontal forging valve cover, flange ear is machined on valve cover, the present application is formed by setting horizontal die forging mechanism cooperation secondary die forging mechanism, first using side die extrusion metal to form protruding structure, then by first linear drive assembly flange ear protruding structure is pushed to forming die Secondary precision forging, originally irregular shape flange ear is processed into the shape required, so as to guarantee the dimensional accuracy and structural strength of flange ear.

Description

Technical Field

[0001] This invention relates to the field of valve cover forging, and more specifically, to a multi-directional die forging valve cover forming apparatus and method. Background Technology

[0002] When a valve is in operation, the position of the opening and closing parts (such as valve disc, gate, ball, etc.) is changed by the drive mechanism, thereby adjusting the opening and closing or the area of ​​the flow channel. The drive switch is usually installed on the valve cover. Therefore, in the actual production process, space needs to be reserved on the valve cover for the installation of the opening and closing parts. At the same time, support components for supporting the drive mechanism need to be machined on the valve cover. The support components are generally flange ears (ear seats) symmetrically arranged on both sides of the valve cover. The flange ears are used to install bolts to establish a stable and high-strength fastening system to fix the drive mechanism.

[0003] During multi-directional forging, the metal preferentially deforms towards areas of lower resistance (such as the center hole of the valve cover body). However, since the flange lugs are lateral structures and there is a reduction in cross-section from the valve cover body to the boss, the metal needs to overcome a huge deformation resistance when deforming from the wide body to the narrow boss channel. Different types of metals have different deformation resistances. When the deformation resistance of the metal is strong, irregular shapes will appear in the flange lug forming area, resulting in shape defects at the edge of the flange lug, which will affect the structural strength of the flange lug. Summary of the Invention

[0004] This invention provides a multi-directional die forging valve cover forming device and method, which solves the technical problem in related technologies that metals with strong deformation resistance preferentially deform to areas with low resistance, resulting in insufficient metal filling and irregular shape of the flange lugs on both sides, thus affecting the structural strength of the flange lugs.

[0005] This invention provides a multi-directional forging valve cover forming device, including a forging table. A lower die assembly is fixedly installed on the table surface of the forging table, and an upper die assembly is fixedly installed on the top of the forging table. The upper and lower die assemblies are used for forging the valve cover by closing the die. A demolding assembly is fixedly installed inside the forging table, with the demolding end of the demolding assembly located inside the lower die assembly. Horizontal forging mechanisms are fixedly installed at both ends of the forging table. The horizontal forging mechanisms are used for horizontal forging of the valve cover, machining flange ears on the valve cover. The horizontal forging mechanisms include a positioning block and a guide rod. A hydraulic assembly is fixedly installed inside the positioning block, and the guide rod is fixedly installed at the output end of the hydraulic assembly. A guide hole is opened inside the guide rod. A side die is provided at the end of the guide hole facing the lower die assembly. A through hole is opened inside the side die. The through hole is approximately T-shaped. A secondary forging mechanism is provided at the end of the through hole facing the positioning block. The secondary forging mechanism includes a first linear drive assembly. A forming die is fixedly installed at the output end of the first linear drive assembly. The shape of the forming die is adapted to the shape of the flange ear, and the forming die is located inside the through hole.

[0006] Preferably, a positioning plate is fixedly installed on the side wall of the guide hole, a second linear drive component is fixedly installed on one side of the positioning plate, a preforming mechanism is fixedly connected to the output end of the second linear drive component, and the preforming mechanism is fixedly connected to the side mold.

[0007] Preferably, the preforming mechanism includes a closed cover plate, which is fixedly connected to the side mold. The side mold has a cavity inside, and a turntable is rotatably installed inside the cavity. A receiving hole is provided at the center of the turntable.

[0008] Preferably, the turntable has an internal receiving groove, and a third linear drive component is fixedly installed on the inner wall of the receiving groove. The third linear drive component is arranged radially along the turntable, and a cylinder is fixedly connected to the output end of the third linear drive component. The cylinder is slidably connected to the turntable. The third linear drive components are symmetrically distributed on both sides of the through hole, and the cylinder is used to machine a circular groove on the flange.

[0009] Preferably, a driven wheel is fixedly connected to one side of the turntable by bolts, and a toothed groove is provided on the edge of the driven wheel. A servo drive assembly is fixedly installed at the bottom of the closed cover plate, and a gear is provided at the output end of the servo drive assembly, and the gear meshes with the driven wheel.

[0010] Preferably, the closed cover plate has a circular hole inside, the circular hole penetrates the closed cover plate, the combination of the turntable and the driven wheel is located between the closed cover plate and the side mold, the circular hole is coaxial with the turntable, a positioning frame is fixedly connected to one side of the turntable, and the first linear drive assembly is fixedly installed inside the positioning frame, the positioning frame is located inside the circular hole.

[0011] Preferably, an annular groove is provided at the edge of the mold facing the round hole, and a limiting block is integrally formed at the edge of the driven wheel facing the closed cover plate. The limiting block is located inside the annular groove, and the annular groove limits the rotation range of the driven wheel through the limiting block.

[0012] Preferably, mold filling mechanisms are fixedly installed on both sides of the side mold. The mold filling mechanisms are symmetrically distributed on both sides of the through hole. The mold filling mechanism includes a fourth linear drive component. The output end of the fourth linear drive component is connected to a movable block. Two movable blocks are symmetrically arranged inside the through hole, and an opening is formed between the two movable blocks. The movable blocks are spliced ​​with the side mold to form a complete mold.

[0013] Preferably, a limiting groove is provided on one side of the mold filling mechanism, and a protrusion is integrally formed on the side wall of the through hole. The protrusion is located inside the limiting groove, and the movable block moves horizontally along the through hole to adjust the opening size.

[0014] A method for forming a multi-directional forged valve cover includes the following steps:

[0015] Step 1: Preliminary mold closing and pre-forming. The metal material is placed in the lower mold assembly, and the upper mold assembly presses down to close the mold, preliminarily forging the metal material. Then, the hydraulic component in the positioning block of the horizontal forging mechanism pushes the guide rod, inserting the guide rod horizontally between the upper and lower molds, so that the side molds are on both sides of the metal material.

[0016] Step 2: Determine the required direction of the threaded hole. The servo drive component drives the driven wheel to rotate the turntable, and adjusts the third linear drive component to a horizontal or vertical state.

[0017] Step 3: Flange lug protrusion and preforming. Activate the second linear drive component on the positioning plate. The preforming mechanism pushes the side mold along the guide hole, causing the side mold to contact the metal material. At this time, the metal material in the through hole is squeezed to form a protruding structure.

[0018] Step 4: Secondary precision forging and positioning. The third linear drive component pushes the cylinder to machine a circular groove on the flange lug. Then, the secondary die forging mechanism is started, and the first linear drive component pushes the forming die to perform secondary forging of the protruding structure.

[0019] Step 5: Dynamic demolding and resetting. After processing, the fourth linear drive component in the mold filling mechanism pulls the movable block to widen the opening between the two movable blocks. Then, the guide rod and the side mold simultaneously detach from the metal material, and finally, the molded valve cover product is ejected upward by the demolding component.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention sets up a horizontal forging mechanism in conjunction with a secondary forging mechanism. First, the side die is used to extrude the metal to form a protruding structure. Then, the first linear drive component pushes the forming die to perform secondary precision forging on the flange ear protruding structure, processing the originally irregularly shaped flange ear into the required shape, thereby ensuring the dimensional accuracy and structural strength of the flange ear.

[0022] 2. This invention, by setting a rotatable turntable structure and a mold filling mechanism in the side mold, can flexibly adjust the processing direction of the threaded hole. At the same time, by setting a mold filling mechanism in the side mold, two movable blocks move towards the edge of the side mold to expand the opening during subsequent demolding, thus solving the problem of demolding difficulties caused by the lateral diffusion of metal during the processing of vertical threaded holes. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the planar structure of the upper mold assembly, lower mold assembly, and horizontal forging mechanism of the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of one end of the guide rod of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the other end of the guide rod of the present invention.

[0027] Figure 5 This is a schematic diagram of the internal structure of the guide rod of the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of the secondary forging mechanism and preforming mechanism of the present invention.

[0029] Figure 7 This is a three-dimensional structural diagram of the preforming mechanism of the present invention.

[0030] Figure 8 This is the present invention. Figure 7 Enlarged structural diagram of part A.

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the fourth linear drive component and the side mold of the present invention.

[0032] Figure 10 This is a three-dimensional structural diagram of the turntable and driven wheel of the present invention.

[0033] Figure 11 This is a schematic diagram of the third linear drive component and cylindrical planar structure of the present invention.

[0034] Figure 12 This is a flowchart of the method of the present invention.

[0035] In the diagram: 1. Forging table; 2. Horizontal forging mechanism; 21. Positioning block; 22. Guide rod; 23. Guide hole; 24. Positioning plate; 25. Side die; 26. Secondary forging mechanism; 261. First linear drive assembly; 262. Positioning frame; 263. Forming die; 27. Pre-forming mechanism; 271. Closed cover plate; 272. Servo drive assembly; 273. Circular hole; 274. Turntable; 275. Driven wheel; 27 6. Receiving groove; 277. Third linear drive component; 278. Cylinder; 279. Receiving hole; 2710. Limiting block; 2711. Annular groove; 28. Mold filling mechanism; 281. Fourth linear drive component; 282. Movable block; 283. Limiting groove; 284. Protrusion; 29. ​​Second linear drive component; 210. Through hole; 211. Cavity; 3. Upper mold assembly; 4. Lower mold assembly; 5. Demolding assembly. Detailed Implementation

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0037] Example 1

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a multi-directional forging valve cover forming device includes a forging table 1. A lower die assembly 4 is fixedly installed on the table surface of the forging table 1, and an upper die assembly 3 is fixedly installed on the top of the forging table 1. The upper die assembly 3 and the lower die assembly 4 are used for forging the valve cover by closing the upper and lower dies. A demolding assembly 5 is fixedly installed inside the forging table 1, and the demolding end of the demolding assembly 5 is located inside the lower die assembly 4. Horizontal forging mechanisms 2 are fixedly installed at both ends of the forging table 1. The horizontal forging mechanisms 2 are used for horizontal forging of the valve cover and machining flange ears on the valve cover. The horizontal forging mechanism 2 includes a positioning block 21 and a guide rod 22. A hydraulic system is fixedly installed inside the positioning block 21. The component, guide rod 22 is fixedly installed at the output end of the hydraulic component. The guide rod 22 has a guide hole 23 inside. A side mold 25 is provided at the end of the guide hole 23 facing the lower mold component 4. A through hole 210 is provided inside the side mold 25. The through hole 210 is approximately T-shaped. A secondary forging mechanism 26 is provided at the end of the through hole 210 facing the positioning block 21. The secondary forging mechanism 26 includes a first linear drive component 261. A forming mold 263 is fixedly installed at the output end of the first linear drive component 261. The shape of the forming mold 263 is adapted to the shape of the flange ear. The forming mold 263 is located inside the through hole 210.

[0039] It should be noted that during the processing of the valve cover, the metal material is placed in the lower mold assembly 4. The hydraulic component in the upper mold assembly 3 pushes the upper mold downward. When the upper mold and the lower mold of the lower mold assembly 4 are closed, the metal material is initially forged into the shape of the valve cover. Then, the hydraulic component in the positioning block 21 pushes the guide rod 22 horizontally, inserting the guide rod 22 horizontally between the upper and lower molds. After the guide rod 22 is inserted to both sides of the metal material, the side mold 25 is pushed out from the guide rod 22 and comes into contact with the metal material. The guide rod 22 has a guide hole 23 inside to determine the movement path of the side mold 25. During the movement of the side mold 25, the metal material located in the through hole 210 is not processed because it is not subjected to the horizontal extrusion of the side mold 25. In the forming process, the metal material outside the through hole 210 is processed into the corresponding shape. At this time, the metal material in the through hole 210 will form a protruding structure compared with other processed parts. This protruding structure is the flange lug on the valve cover. This protruding structure is processed by the secondary forging mechanism 26. The first linear drive component 261 pushes the forming mold 263 to move towards the metal material. The forming mold 263 performs secondary forging on the protruding structure, processing the protruding structure into the required shape to ensure that the flange lug meets the requirements and there are no shape defects, thus ensuring the structural strength of the flange lug. After the processing is completed, the guide rod 22 disengages from the upper mold and the lower mold, and the subsequent demolding component 5 pushes the formed metal material upward. The first linear drive component 261 is an electric cylinder.

[0040] Furthermore, such as Figure 5 As shown, a positioning plate 24 is fixedly installed on the side wall of the guide hole 23. A second linear drive component 29 is fixedly installed on one side of the positioning plate 24. A preforming mechanism 27 is fixedly connected to the output end of the second linear drive component 29. The preforming mechanism 27 is fixedly connected to the side mold 25.

[0041] It should be noted that the second linear drive component 29 on the positioning plate 24 is an electric cylinder. The side mold 25 is connected to the second linear drive component 29 through the preforming mechanism 27. In use, the second linear drive component 29 pushes the side mold 25 to move along the guide hole 23 through the preforming mechanism 27. The positioning plate 24 is used to ensure the structural stability of the second linear drive component 29, and the preforming mechanism 27 is used to preform the flange lug.

[0042] Example 2

[0043] like Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, the flange lug is used to install bolts. Therefore, after the flange lug is formed, threaded holes need to be machined on it. This process is set in the subsequent finishing of the valve cover. However, when the valve cover is made of high-strength metal, the high hardness of the material will significantly increase the cutting resistance. At this time, when using drilling equipment for machining, the drill bit is easily unstable and deviates (slips) due to the excessive hardness of the material. The overall machining difficulty is high. Therefore, in order to facilitate the subsequent machining of threaded holes, this application further provides the following technical solution.

[0044] The preforming mechanism 27 includes a closed cover plate 271, which is fixedly connected to the side mold 25. The side mold 25 has a cavity 211 inside, and a turntable 274 is rotatably mounted inside the cavity 211. A receiving hole 279 is provided at the center of the turntable 274, and a receiving groove 276 is provided inside the turntable 274. A third linear drive component 277 is fixedly mounted on the inner wall of the receiving groove 276. The third linear drive component 277 is arranged radially along the turntable 274. A cylinder 278 is fixedly connected to the output end of the third linear drive component 277. The cylinder 278 is slidably connected to the turntable 274. The third linear drive component 277 is symmetrically distributed on both sides of the through hole 210. The cylinder 278 is used to machine a circular groove on the flange.

[0045] It should be noted that the side mold 25 has a cavity 211 for mounting the turntable 274. The other side of the turntable 274 contacts the closed cover plate 271 to ensure that the turntable 274 will not shift. The receiving hole 279 in the center of the turntable 274 is used to receive metal material. During the movement of the side mold 25, the metal material in the through hole 210 will gradually enter the receiving hole 279. The shape of the receiving hole 279 is adapted to the through hole 210 to ensure that when the metal material enters the receiving hole 279 for groove machining, it will not... When deformation occurs, a receiving groove 276 is provided inside the turntable 274 along the vertical center line of the through hole 210. The receiving groove 276 is used to install the third linear drive component 277, which is an electric cylinder. When it is necessary to machine a circular groove on the flange ear, the third linear drive component 277 pushes the cylinder 278 to machine a circular groove on both sides of the flange ear in the horizontal direction, which is used to initially determine the position of the threaded hole. During the machining process, the receiving hole 279 can ensure that the shape of the metal material always matches the through hole 210.

[0046] Furthermore, such as Figure 7 and Figure 8As shown, the machining of the threaded hole of the flange ear is divided into two cases. One is to machine a horizontal threaded hole, and then install a rod horizontally in the horizontal threaded hole, and rotate and install the fastening system on the rod. This method can facilitate the disassembly and assembly of the fastening system. The other is to machine a vertical threaded hole, and the fastening system is directly installed on the flange ear by bolts. This method can further improve the structural strength of the fastening system. In order to machine both horizontal and vertical threaded holes, this application further provides the following technical solutions.

[0047] A driven wheel 275 is bolted to one side of the turntable 274. The driven wheel 275 has a toothed groove on its edge. A servo drive assembly 272 is fixedly mounted on the bottom of the closed cover plate 271. A gear is provided at the output end of the servo drive assembly 272, and the gear meshes with the driven wheel 275. A circular hole 273 is provided inside the closed cover plate 271, penetrating the closed cover plate 271. The combination of the turntable 274 and the driven wheel 275 is located between the closed cover plate 271 and the side mold 25. The circular hole 273 is aligned with the turntable 274. The shaft is set, and a positioning frame 262 is fixedly connected to one side of the turntable 274. The first linear drive component 261 is fixedly installed inside the positioning frame 262. The positioning frame 262 is located inside the circular hole 273. An annular groove 2711 is opened at the edge of the circular hole 273 facing the side mold 25. A limiting block 2710 is integrally formed on the edge of the driven wheel 275 facing the closed cover plate 271. The limiting block 2710 is located inside the annular groove 2711. The annular groove 2711 limits the rotation range of the driven wheel 275 through the limiting block 2710.

[0048] It should be noted that when it is determined that the flange needs to be machined with vertical threaded holes, before the side mold 25 contacts the metal material, the servo drive component 272 engages and pushes the driven wheel 275. The driven wheel 275 drives the turntable 274, thereby changing the direction of the third linear drive component 277, which was originally in a horizontal state, and rotating it to a vertical state. After the metal material enters the receiving hole 279, the third linear drive component 277 pushes the cylinder 278 to machine circular grooves on the upper and lower surfaces of the flange in a vertical direction. Subsequently, the material is processed by the secondary forging mechanism 2. The flange lugs are machined. The round hole 273 on the closed cover plate 271 is used to accommodate the secondary forging mechanism 26. The positioning frame 262 is coaxially set with the turntable 274 and will rotate synchronously with the turntable 274, so as not to affect the machining and forming of the flange lugs. During the rotation of the driven wheel 275, the limit block 2710 will move in the annular groove 2711. The length of the annular groove 2711 is equal to one-quarter of the arc length of the turntable 274, so as to ensure that the driven wheel 275 can rotate exactly ninety degrees, so that the third linear drive component 277 can rotate from the horizontal state to the vertical state, preventing over-rotation or under-rotation.

[0049] Example 3

[0050] like Figure 5 and Figure 9 As shown, when machining the vertical threaded hole, since the cylinder 278 has been adjusted to a vertical state, the corresponding receiving hole 279 is also rotated to a state perpendicular to the through hole 210. At this time, the metal material in the receiving hole 279 has a horizontally diffused space compared to the through hole 210. When machining the circular groove, when the cylinder 278 forges the metal material, the metal material will undergo outward deformation in the horizontal direction, which will cause the flange lug to be unable to separate from the side mold 25 during subsequent demolding. If the flange lug is machined to conform to the shape of the through hole 210, the overall volume of the flange lug will be reduced, which will affect the structural strength. In order to avoid affecting the separation of the flange lug from the side mold 25 after machining the vertical threaded hole, this application further provides the following technical solution.

[0051] Mold filling mechanisms 28 are fixedly installed on both sides of the side mold 25. The mold filling mechanisms 28 are symmetrically distributed on both sides of the through hole 210. The mold filling mechanism 28 includes a fourth linear drive component 281. The output end of the fourth linear drive component 281 is connected to a movable block 282. Two movable blocks 282 are symmetrically arranged inside the through hole 210, and an opening is formed between the two movable blocks 282. The movable blocks 282 are spliced ​​with the side mold 25 to form a complete mold. A limiting groove 283 is opened on one side of the mold filling mechanism 28. A protrusion 284 is integrally formed on the side wall of the through hole 210. The protrusion 284 is located inside the limiting groove 283. The movable block 282 moves horizontally along the through hole 210 to adjust the size of the opening.

[0052] It should be noted that during the die forging process, the movable block 282 in the die filling mechanism 28 is located in the through hole 210, and its arc surface is flush with the arc surface of the side die 25. An opening is formed between the two movable blocks 282, serving as a channel for the metal material to enter, ensuring that the metal material can enter the receiving hole 279. The shape of the receiving hole 279 matches the shape of the opening. When the flange lug of the metal material is subsequently grooved in the vertical direction, the metal material will undergo outward deformation in the horizontal direction. At this time, the flange lug has been formed, and the valve cover has also been initially formed. At this point, it is not necessary to change the shape of the metal material again; only... Demolding can then be performed. The fourth linear drive component 281 pulls the movable block 282, causing the movable block 282 to move horizontally towards the edge of the side mold 25, thereby widening the opening. The fourth linear drive component 281 is an electric cylinder. When the second linear drive component 29 drives the side mold 25 to detach from the valve cover, the flange can be moved out of the widened opening. The movement range of the movable block 282 is determined by the protrusion 284. The limiting groove 283 on one side of the movable block 282 slides in cooperation with the protrusion 284 to ensure that when the fourth linear drive component 281 pushes the movable block 282 to reassemble with the side mold 25 to form the finished mold, there will be no misalignment.

[0053] Example 4

[0054] like Figure 12 As shown, a method for forming a multi-directional forged valve cover includes the following steps:

[0055] Step 1: Preliminary mold closing and pre-forming. The metal material is placed in the lower mold assembly 4, and the upper mold assembly 3 presses down to close the mold, preliminarily forging the metal material. Then, the hydraulic component in the positioning block 21 of the horizontal forging mechanism 2 pushes the guide rod 22, inserting the guide rod 22 horizontally between the upper and lower molds, so that the side molds 25 are on both sides of the metal material.

[0056] Step 2: Determine the required direction of the threaded hole. The servo drive component 272 drives the driven wheel 275 to rotate the turntable 274, adjusting the third linear drive component 277 to a horizontal or vertical state.

[0057] Step 3: Flange lug protrusion and preforming. Activate the second linear drive component 29 on the positioning plate 24. The preforming mechanism 27 pushes the side mold 25 to move along the guide hole 23, causing the side mold 25 to contact the metal material. At this time, the metal material in the through hole 210 is squeezed to form a protruding structure.

[0058] Step 4: Secondary precision forging and positioning. The third linear drive component 277 pushes the cylinder 278 to machine a circular groove on the flange lug. Then, the secondary die forging mechanism 26 is started, and the first linear drive component 261 pushes the forming die 263 to perform secondary forging of the protruding structure.

[0059] Step 5: Dynamic demolding and resetting. After processing, the fourth linear drive component 281 in the mold filling mechanism 28 pulls the movable block 282 to widen the opening between the two movable blocks 282. Then, the guide rod 22 and the side mold 25 simultaneously detach from the metal material, and finally the molded valve cover product is ejected upward by the demolding component 5.

[0060] Working principle of the invention:

[0061] In use, the valve cover body is formed by closing the upper mold assembly 3 and the lower mold assembly 4. Then, the horizontal forging mechanism 2 at both ends of the forging table 1 performs transverse forging. The hydraulic component in the positioning block 21 pushes the guide rod 22, which is horizontally inserted between the upper and lower molds. Then, according to the processing direction of the threaded hole, the servo drive assembly 272 drives the turntable 274 to adjust the third linear drive component 277 to a horizontal or vertical state.

[0062] Subsequently, the second linear drive component 29 pushes the side mold 25 to laterally extrude the metal material under the guidance of the guide hole 23. The opening between the two metal movable blocks 282 forms a flange lug protrusion structure on the valve cover. After the metal material enters the receiving hole 279, the third linear drive component 277 pushes the cylinder 278 to process circular grooves on the upper and lower surfaces of the flange lug in the vertical direction.

[0063] Then, the first linear drive component 261 pushes the forming mold 263 to perform secondary processing on the protruding structure to eliminate shape defects and ensure the structural strength of the flange ear. Then, the fourth linear drive component 281 pulls the movable block 282, causing the movable block 282 to move horizontally towards the edge of the side mold 25 to expand the opening. Finally, the side mold 25 and the guide rod 22 simultaneously detach from the metal material, and the molded valve cover product is ejected upward by the demolding component 5.

[0064] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A multi-directional die forging valve cover forming device, comprising a forging table (1), a lower die assembly (4) fixedly installed on the table surface of the forging table (1), an upper die assembly (3) fixedly installed on the top of the forging table (1), the upper die assembly (3) and the lower die assembly (4) being used for upper and lower die forging of a valve cover, and a demolding assembly (5) fixedly installed inside the forging table (1), the demolding end of the demolding assembly (5) being located inside the lower die assembly (4), characterized in that, Both ends of the forging table (1) are fixedly installed with horizontal forging mechanisms (2), which are used to forge valve covers horizontally and process flange ears on the valve covers. The horizontal forging mechanism (2) includes a positioning block (21) and a guide rod (22). A hydraulic component is fixedly installed inside the positioning block (21), and the guide rod (22) is fixedly installed at the output end of the hydraulic component. A guide hole (23) is opened inside the guide rod (22). A side mold (25) is provided at one end of the guide hole (23) facing the lower mold component (4). A through hole (210) is opened inside the side mold (25). The through hole (210) is approximately T-shaped. A secondary forging mechanism (26) is provided at one end of the through hole (210) facing the positioning block (21). The secondary forging mechanism (26) includes a first linear drive assembly (261), and a forming mold (263) is fixedly installed at the output end of the first linear drive assembly (261). The shape of the forming mold (263) is adapted to the shape of the flange ear, and the forming mold (263) is located inside the through hole (210).

2. The multi-directional die forging valve cover forming device according to claim 1, characterized in that, A positioning plate (24) is fixedly installed on the side wall of the guide hole (23). A second linear drive component (29) is fixedly installed on one side of the positioning plate (24). A preforming mechanism (27) is fixedly connected to the output end of the second linear drive component (29). The preforming mechanism (27) is fixedly connected to the side mold (25).

3. The multi-directional die forging valve cover forming device according to claim 2, characterized in that, The preforming mechanism (27) includes a closed cover plate (271), which is fixedly connected to the side mold (25). The side mold (25) has a cavity (211) inside, and a turntable (274) is rotatably installed inside the cavity (211). A receiving hole (279) is provided at the center of the turntable (274).

4. The multi-directional die forging valve cover forming device according to claim 3, characterized in that, The turntable (274) has an internal receiving groove (276). A third linear drive component (277) is fixedly installed on the inner wall of the receiving groove (276). The third linear drive component (277) is arranged radially along the turntable (274). A cylinder (278) is fixedly connected to the output end of the third linear drive component (277). The cylinder (278) is slidably connected to the turntable (274). The third linear drive component (277) is symmetrically distributed on both sides of the through hole (210). The cylinder (278) is used to machine a circular groove on the flange.

5. The multi-directional die forging valve cover forming device according to claim 4, characterized in that, A driven wheel (275) is fixedly connected to one side of the turntable (274) by bolts. The driven wheel (275) has a toothed groove at its edge. A servo drive assembly (272) is fixedly installed at the bottom of the closed cover plate (271). The output end of the servo drive assembly (272) is provided with a gear, and the gear meshes with the driven wheel (275).

6. The multi-directional die forging valve cover forming device according to claim 5, characterized in that, The closed cover plate (271) has a circular hole (273) inside, which penetrates the closed cover plate (271). The combination of the turntable (274) and the driven wheel (275) is located between the closed cover plate (271) and the side mold (25). The circular hole (273) and the turntable (274) are coaxially arranged. A positioning frame (262) is fixedly connected to one side of the turntable (274). The first linear drive assembly (261) is fixedly installed inside the positioning frame (262). The positioning frame (262) is located inside the circular hole (273).

7. The multi-directional die forging valve cover forming device according to claim 6, characterized in that, The circular hole (273) has an annular groove (2711) at the edge facing the side mold (25). The driven wheel (275) has an integrally formed limiting block (2710) on the edge facing the closed cover plate (271). The limiting block (2710) is located inside the annular groove (2711). The annular groove (2711) limits the rotation range of the driven wheel (275) through the limiting block (2710).

8. The multi-directional die forging valve cover forming device according to claim 7, characterized in that, The side mold (25) is fixedly installed with mold filling mechanism (28) on both sides. The mold filling mechanism (28) is symmetrically distributed on both sides of the through hole (210). The mold filling mechanism (28) includes a fourth linear drive component (281). The output end of the fourth linear drive component (281) is connected to a movable block (282). The two movable blocks (282) are symmetrically arranged inside the through hole (210). An opening is formed between the two movable blocks (282). The movable blocks (282) and the side mold (25) are spliced ​​together to form a complete mold.

9. A multi-directional die forging valve cover forming device according to claim 8, characterized in that, The mold filling mechanism (28) has a limiting groove (283) on one side, and a protrusion (284) is integrally formed on the side wall of the through hole (210). The protrusion (284) is located inside the limiting groove (283). The movable block (282) moves horizontally along the through hole (210) to adjust the opening size.

10. A method for forming a multi-directional forged valve cover, using the multi-directional forged valve cover forming apparatus as described in claim 9, characterized in that, Includes the following steps: Step 1: Preliminary mold closing and pre-forming. The metal material is placed in the lower mold assembly (4), and the upper mold assembly (3) presses down to close the mold, so that the metal material is initially forged and formed. Then, the hydraulic component in the positioning block (21) of the horizontal forging mechanism (2) pushes the guide rod (22) to insert the guide rod (22) horizontally between the upper mold and the lower mold, so that the side mold (25) is on both sides of the metal material. Step 2: Determine the required direction of the threaded hole. The servo drive component (272) drives the driven wheel (275) to rotate the turntable (274) and adjust the third linear drive component (277) to a horizontal or vertical state. Step 3: Flange lug protrusion and preforming. Start the second linear drive component (29) on the positioning plate (24). Through the preforming mechanism (27), push the side mold (25) to move along the guide hole (23) so that the side mold (25) comes into contact with the metal material. At this time, the metal material in the through hole (210) is squeezed to form a protruding structure. Step 4, secondary precision forging and positioning: The third linear drive component (277) pushes the cylinder (278) to machine a circular groove on the flange ear, and then the secondary die forging mechanism (26) is started. The first linear drive component (261) pushes the forming die (263) to perform secondary forging on the protruding structure. Step 5: Dynamic demolding and resetting. After processing, the fourth linear drive component (281) in the mold filling mechanism (28) pulls the movable block (282) to expand the opening between the two movable blocks (282). Then, the guide rod (22) and the side mold (25) simultaneously detach from the metal material. Finally, the demolding component (5) pushes the molded valve cover product upward.

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