A forging forming mechanism for a valve cover

Abstract

The utility model relates to a related technical field of forging forming mechanism, especially a valve cover's forging forming mechanism, including base, the upper end fixed mounting of base has the stand, the upper end fixed mounting of stand has the mounting panel, the upper end fixed mounting of mounting panel has the mounting bracket, the both ends of mounting bracket all are installed and are penetrated to have the connecting rod, the lower extreme fixed mounting of connecting rod has the first connecting block, the lower extreme fixed mounting of first connecting block has the mounting seat, the lower extreme of mounting seat is provided with the upper die, adopt the innovative structure of fixed ball nut and rotary ball screw, cooperate drive motor, will positioning accuracy promote, through laser displacement sensor real -time monitoring upper die position simultaneously, the significant improvement valve cover forming size consistency, cold -blast air outlet covers the forming area, reduces the forging defect that the thermal stress leads to, through reset spring connects second connecting block and limit board, cooperates the limit ring, realizes the automatic centering and flexible clamping of blank.

Description

Technical Field

[0001] This utility model relates to the technical field of forging forming mechanisms, and in particular to a forging forming mechanism for a valve cover. Background Technology

[0002] As a core sealing component in a pipeline system, the forging quality of the valve cover significantly affects the sealing performance and reliability of the valve. With the development of industrial manufacturing towards high-precision and intelligent production, the design of valve cover forging forming equipment needs to balance forming accuracy, production efficiency, and mold life. Forging forming equipment often adopts a modular architecture, using a servo drive system to realize the downward pressing action of the upper mold, and setting a positioning and limiting mechanism to ensure accurate entry of the billet into the mold. At the same time, in order to adapt to the high-temperature working conditions during the hot forging process, some equipment is equipped with a cooling and temperature control system to maintain the mold temperature, and combined with linear guides, sliders, and other transmission components to improve the smoothness of movement.

[0003] The transmission system relies heavily on hydraulic drive, which has problems such as low positioning accuracy and slow response speed, making it difficult to meet the forming requirements of high-precision valve covers. The blank positioning relies on mechanical limit blocks or manual operation, lacking a real-time automatic correction mechanism, resulting in large eccentricity errors in the forgings.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN119566193B that discloses a hot extrusion forming apparatus and method for large cylindrical forgings. The patent states that "when the pusher plate moves, it drives the rack plate to mesh with the driven gear on the first lead screw, which in turn drives the second lead screw to rotate. The upper sleeve moves upward along the axial direction of the second lead screw, and the lower sleeve moves upward along the axial direction of the first lead screw. When the upper sleeve moves the sub-seat body upward via the elastic telescopic plate, the force-bearing block no longer abuts against the inner wall of the inclined groove. The sub-seat body returns to its original position under the tension of the stretched elastic telescopic plate, separating the two sub-seat bodies on the upper side of the main seat. This prevents the sub-seat bodies from adhering to the cylindrical forging being extruded in the lower die, eliminating the need for an ejector mechanism to push the forging blank upward, thus facilitating rapid demolding of the forging blank." However, relying on the tension of the elastic telescopic plate on the sub-seat body for demolding results in insufficient demolding force due to elastic decay at high temperatures, requiring additional mechanical ejection and easily causing the bottom of the forging to sink.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a forging forming mechanism for valve covers, so as to solve the problems mentioned in the background art, that the transmission system mostly relies on hydraulic drive, which has problems such as low positioning accuracy and slow response speed, making it difficult to meet the forming requirements of high-precision valve covers. The blank positioning relies on mechanical limit blocks or manual operation, lacking a real-time automatic correction mechanism, resulting in large eccentricity error of the forging.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a valve cover forging mechanism, comprising a base, a column fixedly mounted on the upper end of the base, an mounting plate fixedly mounted on the upper end of the column, a guide rail fixedly mounted on the upper end of the mounting plate, a Y-axis slider provided on the upper end of the guide rail, ball screws being installed through both ends of the Y-axis slider, a mounting bracket fixedly mounted on the upper end of the mounting plate, connecting rods being installed through both ends of the mounting bracket, a fixing block fixedly mounted on the upper end of the connecting rod, ball nuts being fixedly installed through both ends of the mounting bracket, and a first connecting rod fixedly mounted on the lower end of the connecting rod. The first connecting block has a mounting base fixedly installed at its lower end, and an upper mold is provided at the lower end of the mounting base. An X-axis slider is sleeved on the outer ring of the ball screw. A worktable is fixedly installed at the upper end of the X-axis slider. A limit plate is fixedly installed at the upper end of the worktable. A second connecting block is provided at the upper end of the worktable. A return spring is fixedly installed at the rear end of the second connecting block. A limit ring is fixedly installed at the front end of the second connecting block. A slider is fixedly installed at the rear end of the second connecting block. A lower mold is provided at the upper end of the mounting plate. A laser displacement sensor is provided at the upper end of the mounting plate. A cooler is provided at the upper end of the mounting plate.

[0008] Preferably, a first limiting block is fixedly installed on the upper end of the mounting plate.

[0009] Preferably, the detection end of the laser displacement sensor faces the lower end face of the upper mold, and the air outlet of the air cooler covers the forming areas of the upper and lower molds.

[0010] Preferably, the second connecting block is connected to the limiting plate by a reset spring.

[0011] Preferably, the upper end of the workbench is fixed with two limiting strips, the lower end of the lower mold is provided with two limiting grooves, the limiting strips are adapted to the limiting grooves, and the two ends of the workbench are provided with second limiting blocks, the second limiting blocks are provided with bolts and screwed into the end face of the limiting strips.

[0012] Preferably, both ends of the mounting base are provided with connecting plates, and the mounting base is connected to the upper mold through the connecting plates.

[0013] Preferably, a drive motor is provided at the upper end of the fixed block, the output end of the drive motor is connected to a belt via a synchronous pulley, the belt is connected to the output end of the reducer via another set of synchronous pulleys, and the ball screw is connected to the other output end of the reducer via a coupling.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The valve cover forging forming mechanism adopts an innovative structure of fixed ball nut and rotating ball screw, and is driven by a servo motor to improve positioning accuracy. At the same time, the position of the upper mold is monitored in real time by a laser displacement sensor to form a closed-loop control system, which significantly improves the consistency of valve cover forming dimensions. The air outlet of the cold air blower covers the forming area, reducing forging defects caused by thermal stress. The second connecting block and the limiting plate are connected by a reset spring, and the limiting ring is used to realize automatic centering and flexible clamping of the billet. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the mutual cooperation between the mounting bracket and the fixing block of this utility model;

[0017] Figure 3 This is a schematic diagram of the cooperation structure between the mounting plate and the guide rail of this utility model;

[0018] Figure 4 This is a schematic diagram of the working table and the limiting plate of this utility model in cooperation with each other.

[0019] In the diagram: 1. Base; 2. Column; 3. Mounting plate; 4. First limiting block; 5. Guide rail; 6. Y-axis slider; 7. Ball screw; 8. Mounting bracket; 9. Connecting rod; 10. Fixing block; 11. Ball nut; 12. First connecting block; 13. Mounting seat; 14. Upper mold; 15. X-axis slider; 16. Worktable; 17. Limiting plate; 18. Second connecting block; 19. Return spring; 20. Limiting ring; 21. Slider; 22. Lower mold; 23. Laser displacement sensor; 24. Air cooler; 25. Second limiting block; 26. Connecting plate; 27. Drive motor; 28. Belt; 29. ​​Reducer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution: a valve cover forging forming mechanism, including a base 1, a column 2 fixedly installed on the upper end of the base 1, an mounting plate 3 fixedly installed on the upper end of the column 2, a guide rail 5 fixedly installed on the upper end of the mounting plate 3, a Y-axis slider 6 provided on the upper end of the guide rail 5, ball screws 7 being installed through both ends of the Y-axis slider 6, a mounting bracket 8 fixedly installed on the upper end of the mounting plate 3, connecting rods 9 being installed through both ends of the mounting bracket 8, a fixing block 10 fixedly installed on the upper end of the connecting rod 9, ball nuts 11 being fixedly installed through both ends of the mounting bracket 8, and a first connecting block 12 fixedly installed on the lower end of the connecting rod 9. A mounting base 13 is fixedly installed, and an upper mold 14 is provided at the lower end of the mounting base 13. An X-axis slider 15 is sleeved on the outer ring of the ball screw 7. A worktable 16 is fixedly installed at the upper end of the X-axis slider 15. A limit plate 17 is fixedly installed at the upper end of the worktable 16. A second connecting block 18 is provided at the upper end of the worktable 16. A return spring 19 is fixedly installed at the rear end of the second connecting block 18. A limit ring 20 is fixedly installed at the front end of the second connecting block 18. A slider 21 is fixedly installed at the rear end of the second connecting block 18. A lower mold 22 is provided at the upper end of the worktable 16. A laser displacement sensor 23 is provided at the upper end of the mounting plate 3. A cooler 24 is provided at the upper end of the mounting plate 3.

[0022] Furthermore, a first limiting block 4 is fixedly installed on the upper end of the mounting plate 3. By setting the first limiting block 4, the limit displacement of the worktable 16 in the X / Y axis direction can be precisely limited under the drive of the ball screw 7, so as to prevent equipment collision or positioning inaccuracy caused by the overtravel of the slider.

[0023] Furthermore, the detection end of the laser displacement sensor 23 faces the lower end face of the upper mold 14, and the air outlet of the air cooler 24 covers the forming area of ​​the upper mold 14 and the lower mold 22. The laser displacement sensor 23 is model AutonicsBD-030, and the air cooler 24 is model GFD420 / 150N-2250SF. The upper mold pressing displacement data is collected in real time and fed back to the control system of the drive motor 27 to dynamically correct the transmission error of the ball screw 7 and ensure the consistency of the forming size of the valve cover forging.

[0024] Furthermore, the second connecting block 18 is connected to the limiting plate 17 via a return spring 19. By setting the return spring 19, the front limiting ring 20 automatically presses against the billet during the forging process to achieve flexible centering, while adaptively compensating for the deviation of the billet size, thus avoiding the positioning error caused by the rigid collision of traditional mechanical limiting.

[0025] Furthermore, two limiting strips are fixed to the upper end of the worktable 16, and two limiting grooves are provided at the lower end of the lower mold 22. The limiting strips are adapted to the limiting grooves. Second limiting blocks 25 are provided at both ends of the worktable 16. Bolts are threaded through the second limiting blocks 25 and screwed into the end face of the limiting strips. By setting the second limiting blocks 25, the limiting grooves of the lower mold 22 and the limiting strips of the worktable 16 are precisely locked together, so as to achieve the horizontal positioning accuracy of the mold and support quick mold change.

[0026] Furthermore, both ends of the mounting base 13 are provided with connecting plates 26. The mounting base 13 is connected to the upper mold 14 through the connecting plates 26. The connection plates 26 enable the upper mold 14 to be switched quickly.

[0027] Furthermore, a drive motor 27 is provided at the upper end of the fixed block 10. The output end of the drive motor 27 is connected to the belt 28 through a synchronous pulley. The belt 28 is connected to the output end of the reducer 29 through another set of synchronous pulleys. The ball screw 7 is connected to the other output end of the reducer 29 through a coupling. By setting the reducer 29, the output speed of the drive motor 27 is reduced, while the torque is amplified, so that the ball screw 7 obtains a stable low-speed, high-torque driving force.

[0028] Working principle: The two drive motors 27 on the mounting plate 3 are activated, and their power is transmitted to the reducer 29 via synchronous pulleys and belts 28. After reduction and torque increase, the reducer drives the ball screw 7 to rotate. The ball screw 7, Y-axis slider 6, and X-axis slider 15 form a transmission pair, moving along the guide rail 5, thereby enabling the worktable 16 to achieve bidirectional X / Y axis displacement, completing the precise positioning of the blank. Simultaneously, the drive mechanism on the fixed block 10 is linked to the reducer 29 via belt 28, driving the ball screw 7 to rotate. The ball nut 11 is fixed through and fixed to the upper end of the mounting frame 8. The connecting rod 9 drives the fixed block 10 and the upper mold 14 to move vertically, achieving precise control of the downward stroke and fine-tuning of the upper mold 14's posture. The blank is placed in the lower mold 22 on the worktable 16. The second connecting block 18 is connected to the limiting plate 17 via a return spring 19. The front limiting ring 20 is in the elasticity of the return spring 19. The blank is automatically pressed against the force to achieve flexible centering. When there is a slight deviation in the blank size, the slider 21 can slide in the groove of the worktable 16. The deviation is compensated by the buffering effect of the return spring 19 to avoid positioning errors caused by rigid collisions. The laser displacement sensor 23 monitors the pressing position of the upper mold 14 in real time and feeds the data back to the control system to form a closed-loop adjustment, correct the pressing depth of the upper mold 14, and ensure the forming accuracy. The first limit block 4 is used to limit the upper limit of the stroke of the Y-axis slider 6 and the X-axis slider 15 to prevent overload. The air outlet of the fan 24 covers the forming area of ​​the upper mold 14 and the lower mold 22. The mold is forced to be cooled by air during the forging process to reduce the deformation of the forging and the wear of the mold caused by thermal stress. The lower mold 22 is positioned by the limit strip and the limit groove on the worktable 16, and is fixed by the second limit block 25 and bolts. The time for changing molds at one time can be shortened.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forging mechanism for a valve cover, comprising a base (1), characterized in that: A column (2) is fixedly installed on the upper end of the base (1). A mounting plate (3) is fixedly installed on the upper end of the column (2). A guide rail (5) is fixedly installed on the upper end of the mounting plate (3). A Y-axis slider (6) is provided on the upper end of the guide rail (5). Ball screws (7) are installed through both ends of the Y-axis slider (6). A mounting bracket (8) is fixedly installed on the upper end of the mounting plate (3). A connecting rod (9) is installed through both ends of the mounting bracket (8). A fixing block (10) is fixedly installed on the upper end of the connecting rod (9). Ball nuts (11) are fixedly installed through both ends of the mounting bracket (8). A first connecting block (12) is fixedly installed on the lower end of the connecting rod (9). A mounting seat (13) is fixedly installed on the lower end of the first connecting block (12). (13) has an upper mold (14) at its lower end. The outer ring of the ball screw (7) is fitted with an X-axis slider (15). The upper end of the X-axis slider (15) is fixedly mounted with a worktable (16). The upper end of the worktable (16) is fixedly mounted with a limit plate (17). The upper end of the worktable (16) is provided with a second connecting block (18). The rear end of the second connecting block (18) is fixedly mounted with a reset spring (19). The front end of the second connecting block (18) is fixedly mounted with a limit ring (20). The rear end of the second connecting block (18) is fixedly mounted with a slider (21). The upper end of the worktable (16) is provided with a lower mold (22). The upper end of the mounting plate (3) is provided with a laser displacement sensor (23). The upper end of the mounting plate (3) is provided with a cooler (24).

2. The forging mechanism for a valve cover according to claim 1, characterized in that: The first limiting block (4) is fixedly installed on the upper end of the mounting plate (3).

3. The forging mechanism for a valve cover according to claim 1, characterized in that: The detection end of the laser displacement sensor (23) faces the lower end face of the upper mold (14), and the air outlet of the air cooler (24) covers the forming area of ​​the upper mold (14) and the lower mold (22).

4. The forging mechanism for a valve cover according to claim 1, characterized in that: The second connecting block (18) is connected to the limiting plate (17) by a return spring (19).

5. The forging mechanism for a valve cover according to claim 1, characterized in that: The upper end of the workbench (16) is fixed with two limiting strips, and the lower end of the lower mold (22) is provided with two limiting grooves. The limiting strips are adapted to the limiting grooves. The two ends of the workbench (16) are provided with second limiting blocks (25). The second limiting blocks (25) are provided with bolts and screwed into the end face of the limiting strips.

6. The forging mechanism for a valve cover according to claim 1, characterized in that: Both ends of the mounting base (13) are provided with connecting plates (26), and the mounting base (13) is connected to the upper mold (14) through the connecting plates (26).

7. The forging mechanism for a valve cover according to claim 1, characterized in that: The upper end of the fixed block (10) is provided with a drive motor (27). The output end of the drive motor (27) is connected to the belt (28) through a synchronous pulley. The belt (28) is connected to the output end of the reducer (29) through another set of synchronous pulleys. The ball screw (7) is connected to the other output end of the reducer (29) through a coupling.

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