A forging apparatus for metal forgings

Abstract

This invention relates to the field of metal forging technology, specifically to a forging apparatus for metal forgings. The apparatus includes a base, a forging mechanism fixedly mounted on top of the base, a drive mechanism on one side of the base, a ventilation pipe rotatably mounted inside the mounting base, a rotating cylinder fixedly mounted at the bottom of the ventilation pipe, an L-shaped hollow tube on one side of the rotating cylinder, and scrapers fixedly mounted at the bottom and on the side away from the rotating cylinder of the L-shaped hollow tube. Multiple through holes are opened on the outer side of the L-shaped hollow tube. The beneficial effect of this invention is that after evacuating the cavity of a circular magnesium alloy forging mold, it is then filled with inert gas, reducing the oxygen content inside the mold cavity and disrupting the combustion chain reaction. Under these conditions, when magnesium shavings are removed from the mold cavity using a scraper, the shavings will not burn even if they encounter a spark, thus improving safety.

Description

Technical Field

[0001] This invention relates to the field of metal forging technology, specifically to a forging apparatus for metal forgings. Background Technology

[0002] Magnesium alloy forgings are magnesium alloy products manufactured through forging processes. They are characterized by lightweight, high strength, good shock absorption, and electromagnetic shielding properties, and are widely used in aerospace, automotive, and electronic equipment industries.

[0003] For some simple round magnesium alloy forgings (such as steering columns), die forging is usually used. First, a suitable material is selected, the die is preheated and lubricated, then the billet is heated, the heated billet is placed in the die and pressed, and finally the finished magnesium alloy forging is obtained.

[0004] Due to the low hardness of magnesium alloys, they are easily sheared or scraped by the die during high-pressure forging, generating debris. Furthermore, the die wears down after continuous use, and the coating peels off, allowing the base steel to directly contact the magnesium, further accelerating debris formation. Therefore, after removing the finished magnesium alloy forging, it is usually necessary to clean the cavity of residual magnesium shavings and other metal debris. In existing technology, a hand-held scraper is used to manually remove the magnesium shavings adhering to the die cavity. However, magnesium shavings, especially fine powder, are flammable. When cleaning the cavity, the friction between the scraper and the die generates localized high temperatures, and the fine magnesium powder can form an explosive mixture in the air. Therefore, workers must be extremely careful during cleaning, resulting in a slow cleaning speed and affecting the processing efficiency of the finished magnesium alloy forging. To address this, we propose a forging device for metal forgings. Summary of the Invention

[0005] The purpose of this invention is to provide a forging apparatus for metal forgings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a forging apparatus for metal forgings, comprising a base and a die forging mechanism fixedly mounted on the top of the base. A first driving mechanism is provided on one side of the base, and a mounting seat is provided in the first driving mechanism. A ventilation pipe is rotatably mounted inside the mounting seat, and a ventilation mechanism is provided at the top of the ventilation pipe. A second driving mechanism is provided inside the mounting seat, and a sealing mechanism is provided at the bottom of the mounting seat. A rotating cylinder is fixedly mounted at the bottom of the ventilation pipe, and an L-shaped hollow tube is provided on one side of the rotating cylinder. Scrapers are fixedly mounted on the bottom and the side away from the rotating cylinder of the L-shaped hollow tube. A displacement mechanism and a fixing mechanism are provided inside the L-shaped hollow tube. Multiple through holes are opened on the outer side of the L-shaped hollow tube. A flexible hose is connected to the end of the L-shaped hollow tube near the rotating cylinder, and the top of the flexible hose is connected to the ventilation pipe.

[0007] Preferably, the drive mechanism includes a bracket, a cylinder, two cylinders, and a support plate. The bracket is fixedly installed on one side of the base, the cylinder is fixedly installed inside the bracket, the support plate is fixedly installed at the top of the telescopic shaft of the cylinder, and the two cylinders are symmetrically fixedly installed at both ends of the top of the support plate. The telescopic shafts of the two cylinders away from the support plate are fixedly connected to the mounting base.

[0008] Preferably, the ventilation mechanism includes a connecting pipe, which is fixedly installed on the top of the mounting base. The bottom of the connecting pipe is connected to a ventilation pipe, and both ends of the top of the connecting pipe are connected to branch pipes. Solenoid valves are fixedly installed on the ends of the two branch pipes near the connecting pipe.

[0009] Preferably, the second drive mechanism includes a drive gear, a driven gear, and a drive motor. The drive motor is fixedly mounted on the top of the mounting base, the drive gear is fixedly mounted outside the output shaft of the drive motor, and the driven gear is fixedly mounted outside the ventilation pipe. The drive gear and the driven gear mesh with each other.

[0010] Preferably, the sealing mechanism includes an annular seat, an annular mounting plate is slidably installed inside the annular seat, a plurality of evenly distributed springs are fixedly installed between the top of the annular mounting plate and the inner wall of the annular seat, and an annular sealing ring is fixedly installed at the bottom of the annular mounting plate.

[0011] Preferably, the displacement mechanism includes a connecting assembly and a transmission assembly. The connecting assembly includes a connecting frame and a side plate. The connecting frame is fixedly installed on the top of the L-shaped hollow tube, and the side plate is fixedly installed on the side of the rotating drum near the L-shaped hollow tube. Two transmission rods are fixed inside the connecting frame, and two strip grooves are opened inside the side plate. The two transmission rods are slidably installed inside the two strip grooves respectively.

[0012] Preferably, the transmission assembly includes two push rods, which are symmetrically slidably sleeved on the bottom of the rotating drum. A support plate is fixedly installed on the top of the two push rods. Two springs are fixedly installed between the bottom of the support plate and the inner wall of the rotating drum. A connecting rope is fixedly installed on the top of the support plate. The end of the connecting rope away from the support plate is fixedly connected to one of the transmission rods. A guide wheel is fixedly installed on the inner wall of the rotating drum near the side plate. The connecting rope is in contact with the surface of the guide wheel.

[0013] Preferably, the fixing mechanism includes a second support plate and a movable rod. The second support plate is fixedly installed on the outside of the two top rods. The movable rod is slidably fitted inside the side plate. Both ends of the front and back of the movable rod are fixedly installed with locking blocks. A push rod is rotatably installed at the end of the movable rod near the top rod. The end of the push rod away from the movable rod is rotatably installed on the top of the second support plate. Both ends of the front and back of the connecting frame are provided with slots. The four slots cooperate with the four locking blocks respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By evacuating the cavity of the circular magnesium alloy forging mold and then filling it with inert gas, the oxygen content inside the cavity of the circular magnesium alloy forging mold is reduced, thus disrupting the combustion chain reaction. Under these conditions, when the magnesium shavings adhering to the inside of the mold cavity are removed by scraper, the magnesium shavings will not burn even if they encounter a spark, thereby improving safety. Furthermore, the automated cleaning of magnesium shavings and other debris inside the cavity of the circular magnesium alloy forging mold is beneficial to improving the processing efficiency of the finished magnesium alloy forgings.

[0016] 2. The L-shaped hollow tube is rotated by the set drive mechanism, which helps to improve the efficiency of inert gas filling. Furthermore, the displacement mechanism and the fixing mechanism ensure that the scraper will not come into contact with the inside of the mold cavity during the process of adding inert gas. This prevents air from quickly re-entering the mold cavity after the seal fails, which could still lead to an explosion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the mounting base structure of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the present invention;

[0020] Figure 4 This is a cross-sectional view of the mounting base and sealing mechanism of the present invention;

[0021] Figure 5This is a cross-sectional view of the sealing mechanism of the present invention;

[0022] Figure 6 This is a front view of the rotating drum and L-shaped ventilation pipe of the present invention;

[0023] Figure 7 This is a schematic diagram of the connection structure between the rotating drum and the side plate of the present invention;

[0024] Figure 8 This is an internal view of the rotating drum of the present invention;

[0025] Figure 9 This is a schematic diagram of the movable rod structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the L-shaped hollow tube structure of the present invention.

[0027] The components represented by each number in the attached diagram are listed below: 1. Base; 2. Forging mechanism; 3. Bracket; 4. Cylinder 1; 5. Cylinder 2; 6. Support plate; 7. Mounting seat; 8. Ventilation pipe; 9. Connecting pipe; 10. Branch pipe; 11. Solenoid valve; 12. Drive gear; 13. Driven gear; 14. Rotary drum; 15. L-shaped hollow tube; 16. Scraper; 17. Through hole; 18. Flexible hose; 19. Annular seat; 20. Annular mounting plate; 21. Spring 1; 22. Annular sealing ring; 23. Connecting frame; 24. Side plate; 25. Transmission rod; 26. Strip groove; 27. Top rod; 28. Support plate 1; 29. ​​Spring 2; 30. Connecting rope; 31. Guide wheel; 32. Support plate 2; 33. Moving rod; 34. Locking block; 35. Push rod; 36. Slot; 37. Drive motor. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] This invention provides a technical solution: such as Figures 1-10The forging apparatus for metal forgings shown includes a base 1 and a forging mechanism 2 fixedly mounted on the top of the base 1. A drive mechanism 1 is provided on one side of the base 1, and a mounting seat 7 is provided in the drive mechanism 1. A ventilation pipe 8 is rotatably mounted inside the mounting seat 7. A ventilation mechanism is provided at the top of the ventilation pipe 8. A drive mechanism 2 is provided inside the mounting seat 7. A sealing mechanism is provided at the bottom of the mounting seat 7. A rotating cylinder 14 is fixedly mounted at the bottom of the ventilation pipe 8. An L-shaped hollow tube 15 is provided on one side of the rotating cylinder 14. A scraper 16 is fixedly mounted on the bottom of the L-shaped hollow tube 15 and on the side away from the rotating cylinder 14. A displacement mechanism and a fixing mechanism are provided inside the L-shaped hollow tube 15. Multiple through holes 17 are opened on the outer side of the L-shaped hollow tube 15. A flexible hose 18 is connected to the end of the L-shaped hollow tube 15 near the rotating cylinder 14. The top of the flexible hose 18 is connected to the ventilation pipe 8.

[0030] The drive mechanism includes a bracket 3, a first cylinder 4, two second cylinders 5, and a support plate 6. The bracket 3 is fixedly installed on one side of the base 1, the first cylinder 4 is fixedly installed inside the bracket 3, the support plate 6 is fixedly installed on the top of the telescopic shaft of the first cylinder 4, and the two second cylinders 5 are symmetrically fixedly installed at both ends of the top of the support plate 6. The side of the telescopic shaft of the two second cylinders 5 away from the support plate 6 is fixedly connected to the mounting base 7.

[0031] The ventilation mechanism includes a connecting pipe 9, which is fixedly installed on the top of the mounting base 7. The bottom of the connecting pipe 9 is connected to the ventilation pipe 8. Both ends of the top of the connecting pipe 9 are connected to branch pipes 10. Solenoid valves 11 are fixedly installed on the ends of the two branch pipes 10 near the connecting pipe 9.

[0032] The second drive mechanism includes a drive gear 12, a driven gear 13, and a drive motor 37. The drive motor 37 is fixedly mounted on the top of the mounting base 7. The drive gear 12 is fixedly mounted on the outside of the output shaft of the drive motor 37. The driven gear 13 is fixedly mounted on the outside of the ventilation pipe 8. The drive gear 12 and the driven gear 13 mesh with each other.

[0033] The sealing mechanism includes an annular seat 19, an annular mounting plate 20 is slidably installed inside the annular seat 19, a plurality of evenly distributed springs 21 are fixedly installed between the top of the annular mounting plate 20 and the inner wall of the annular seat 19, and an annular sealing ring 22 is fixedly installed at the bottom of the annular mounting plate 20.

[0034] The displacement mechanism includes a connecting assembly and a transmission assembly. The connecting assembly includes a connecting frame 23 and a side plate 24. The connecting frame 23 is fixedly installed on the top of the L-shaped hollow tube 15, and the side plate 24 is fixedly installed on the side of the rotating drum 14 near the L-shaped hollow tube 15. Two transmission rods 25 are fixed inside the connecting frame 23, and two strip grooves 26 are opened inside the side plate 24. The two transmission rods 25 are slidably installed inside the two strip grooves 26 respectively.

[0035] The transmission assembly includes two push rods 27, which are symmetrically slidably sleeved on the bottom of the rotating drum 14. A support plate 28 is fixedly installed on the top of the two push rods 27. Two springs 29 are fixedly installed between the bottom of the support plate 28 and the inner wall of the rotating drum 14. A connecting rope 30 is fixedly installed on the top of the support plate 28. The end of the connecting rope 30 away from the support plate 28 is fixedly connected to one of the transmission rods 25. A guide wheel 31 is fixedly installed on the inner wall of the rotating drum 14 near the side plate 24. The connecting rope 30 is attached to the surface of the guide wheel 31.

[0036] The fixing mechanism includes a second support plate 32 and a movable rod 33. The second support plate 32 is fixedly installed on the outside of the two top rods 27. The movable rod 33 is slidably fitted inside the side plate 24. Both ends of the front and back of the movable rod 33 are fixedly installed with locking blocks 34. A push rod 35 is rotatably installed on the end of the movable rod 33 near the top rod 27. The end of the push rod 35 away from the movable rod 33 is rotatably installed on the top of the second support plate 32. Both ends of the front and back of the connecting frame 23 are provided with slots 36. The four slots 36 cooperate with the four locking blocks 34 respectively.

[0037] Working principle: Before use, connect the two branch pipes 10 to the vacuum negative pressure machine and the liquid nitrogen vaporization system respectively. After the forging mechanism 2 finishes processing the round magnesium alloy forging, take out the round magnesium alloy forging and then clean the magnesium shavings and other debris remaining in the mold cavity of the forging mechanism 2.

[0038] During cleaning, the extension of the telescopic shafts of two cylinders 25 first moves the mounting seat 7, positioning it directly above the mold cavity in the forging mechanism 2. Then, the shortening of the telescopic shaft of cylinder 4 moves the mounting seat 7 downwards. During this downward movement, the annular sealing ring 22 first contacts the mold surface in the forging mechanism 2. As the mounting seat 7 continues to descend, the annular seat 19 compresses multiple springs 21 and the annular mounting plate 20, thus ensuring tight contact between the annular sealing ring 22 and the mold surface in the forging mechanism 2, achieving a seal on the mold cavity. At this time, the two scrapers 16 and the mold... There is still a certain distance between the bottom and side walls of the cavity. Cylinder 4 is closed. Then, the solenoid valve 11 at one end of the branch pipe 10 connected to the vacuum compressor is opened (the solenoid valve 11 in the other branch pipe 10 is closed), and the vacuum compressor is started. At this time, the air inside the mold cavity is sequentially extracted through the through hole 17, L-shaped hollow pipe 15, flexible hose 18, ventilation pipe 8, and the branch pipe 10. Simultaneously with the extraction of air from the mold cavity, some magnesium shavings and other debris generated during the processing of the circular magnesium alloy forging inside the mold cavity are also extracted. After the mold cavity is evacuated, the solenoid valve 11 in the branch pipe 10 is closed. Valve 11 is then opened, and the solenoid valve 11 in the branch pipe 10 connected to the liquid nitrogen vaporization system is opened. The inert gas in the liquid nitrogen vaporization system passes sequentially through the branch pipe 10, the ventilation pipe 8, the hose 18, and the L-shaped hollow pipe 15, and finally enters the interior of the mold cavity through multiple through holes 17. At the same time, the drive motor 37 is started, which drives the drive gear 12 to rotate. Under the action of the meshing of the drive gear 12 and the driven gear 13, the driven gear 13 can drive the ventilation pipe 8 to rotate. The rotating drum 14 and the L-shaped hollow pipe 15 rotate synchronously, and the inert gas sprayed out from the multiple through holes 17 can quickly fill every corner of the mold cavity. This is beneficial for improving the efficiency of inert gas filling. The increase of inert gas reduces the oxygen content inside the cavity of the circular magnesium alloy forging mold. (It should be noted that if the two scrapers 16 start cleaning during the inert gas filling process, and a sealing failure occurs, air will quickly re-enter the mold cavity, which may still lead to an explosion. To address this issue, the statement mentioned in the above steps that "the two scrapers 16 are still a certain distance from the bottom and side walls of the mold cavity" can effectively solve this problem. The two scrapers 16 will not rub against the mold cavity to generate local high temperatures, thus preventing an explosion.)

[0039] After the inert gas filling is completed, the corresponding solenoid valve 11 and drive motor 37 are closed. Then, the mounting base 7 is lowered again by cylinder 4. The two push rods 27 gradually approach the bottom of the mold. When the two push rods 27 contact the bottom of the mold, as the mounting base 7 and the rotating drum 14 continue to descend, the spring 29 is stretched, the distance between the support plate 28 and the guide wheel 31 is shortened, and the length of the connecting rope 30 located outside the rotating drum 14 increases. Under the action of its own gravity, the L-shaped hollow tube 15 and the connecting frame 23 drive the two transmission rods 25 to tilt and slide down under the action of the two strip grooves 26. When the rotating drum 14 moves to the bottom, the two scrapers 16 are in contact with the bottom and side wall of the mold cavity, respectively. As the cylinder 14 descends, the distance between the support plate 32 and the moving rod 33 shortens, and the push rod 35 exerts a thrust on the moving rod 33. The moving rod 33 then drives the four locking blocks 34 to move synchronously. When the rotating cylinder 14 moves to the bottom, the four locking blocks 34 correspond to their respective locking slots 36 and are locked into their respective locking slots 36, thus fixing the L-shaped hollow tube 15 and preventing the two scrapers 16 from moving upwards when they come into contact with magnesium shavings with strong adhesion. Subsequently, the L-shaped hollow tube 15 is driven to rotate again by the drive mechanism, which can drive the two scrapers 16 to clean the magnesium shavings adhering to the inner wall of the mold cavity. After cleaning, the debris inside the mold cavity can also be collected by a vacuum negative pressure machine.

[0040] Finally, the mounting base 7 and the rotating cylinder 14 are raised by the cylinder 4, and the ejector rod 27 gradually moves away from the bottom of the mold cavity. Then, under the action of the spring 29, the two ejector rods 27 are reset, the moving rod 33 drives the four locking blocks 34 to disengage from their respective locking slots 36, and the connecting rope 30 also pulls the L-shaped hollow tube 15 to reset.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forging apparatus for metal forgings, comprising a base (1) and a die forging mechanism (2) fixedly disposed on the top of the base (1), characterized in that: A drive mechanism is provided on one side of the base (1), and a mounting seat (7) is provided in the drive mechanism. A ventilation pipe (8) is rotatably installed inside the mounting seat (7). A ventilation mechanism is provided on the top of the ventilation pipe (8). A drive mechanism is provided inside the mounting seat (7). A sealing mechanism is provided at the bottom of the mounting seat (7). A rotating cylinder (14) is fixedly installed at the bottom of the ventilation pipe (8). An L-shaped hollow pipe (15) is provided on one side of the rotating cylinder (14). A scraper (16) is fixedly installed on the bottom of the L-shaped hollow pipe (15) and on the side away from the rotating cylinder (14). A displacement mechanism and a fixing mechanism are provided inside the L-shaped hollow pipe (15). Multiple through holes (17) are opened on the outside of the L-shaped hollow pipe (15). A flexible hose (18) is connected to one end of the L-shaped hollow pipe (15) near the rotating cylinder (14). The top of the flexible hose (18) is connected to the ventilation pipe (8). The drive mechanism includes a bracket (3), a cylinder (4), two cylinders (5) and a support plate (6). The bracket (3) is fixedly installed on one side of the base (1). The cylinder (4) is fixedly installed inside the bracket (3). The support plate (6) is fixedly installed on the top of the telescopic shaft of the cylinder (4). The two cylinders (5) are symmetrically fixedly installed at both ends of the top of the support plate (6). The side of the telescopic shaft of the two cylinders (5) away from the support plate (6) is fixedly connected to the mounting base (7). The ventilation mechanism includes a connecting pipe (9), which is fixedly installed on the top of the mounting base (7). The bottom of the connecting pipe (9) is connected to the ventilation pipe (8). Both ends of the top of the connecting pipe (9) are connected to branch pipes (10). Solenoid valves (11) are fixedly installed on the ends of the two branch pipes (10) near the connecting pipe (9). The second drive mechanism includes a drive gear (12), a driven gear (13), and a drive motor (37). The drive motor (37) is fixedly installed on the top of the mounting base (7). The drive gear (12) is fixedly installed outside the output shaft of the drive motor (37). The driven gear (13) is fixedly installed outside the ventilation pipe (8). The drive gear (12) and the driven gear (13) mesh with each other.

2. The forging apparatus for metal forgings according to claim 1, characterized in that: The sealing mechanism includes an annular seat (19), an annular mounting plate (20) is slidably installed inside the annular seat (19), a plurality of evenly distributed springs (21) are fixedly installed between the top of the annular mounting plate (20) and the inner wall of the annular seat (19), and an annular sealing ring (22) is fixedly installed at the bottom of the annular mounting plate (20).

3. The forging apparatus for metal forgings according to claim 1, characterized in that: The displacement mechanism includes a connecting component and a transmission component. The connecting component includes a connecting frame (23) and a side plate (24). The connecting frame (23) is fixedly installed on the top of the L-shaped hollow tube (15). The side plate (24) is fixedly installed on the side of the rotating drum (14) near the L-shaped hollow tube (15). Two transmission rods (25) are fixed inside the connecting frame (23). Two strip grooves (26) are opened inside the side plate (24). The two transmission rods (25) are slidably installed inside the two strip grooves (26).

4. The forging apparatus for metal forgings according to claim 3, characterized in that: The transmission assembly includes two push rods (27), which are symmetrically slidably sleeved on the bottom of the rotating drum (14). A support plate (28) is fixedly installed on the top of the two push rods (27). Two springs (29) are fixedly installed between the bottom of the support plate (28) and the inner wall of the rotating drum (14). A connecting rope (30) is fixedly installed on the top of the support plate (28). One end of the connecting rope (30) away from the support plate (28) is fixedly connected to one of the transmission rods (25). A guide wheel (31) is fixedly installed on the inner wall of the rotating drum (14) near the side plate (24). The connecting rope (30) is attached to the surface of the guide wheel (31).

5. The forging apparatus for metal forgings according to claim 4, characterized in that: The fixing mechanism includes a second support plate (32) and a moving rod (33). The second support plate (32) is fixedly installed on the outside of the two top rods (27). The moving rod (33) is slidably fitted inside the side plate (24). Both ends of the front and back of the moving rod (33) are fixedly installed with locking blocks (34). A push rod (35) is rotatably installed at the end of the moving rod (33) near the top rod (27). The end of the push rod (35) away from the moving rod (33) is rotatably installed on the top of the second support plate (32). Both ends of the front and back of the connecting frame (23) are provided with slots (36). The four slots (36) cooperate with the four locking blocks (34) respectively.

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