A large aluminum alloy forging device

Abstract

The present invention belongs to the technical field of aluminum alloy forging equipment, and specifically relates to a large aluminum alloy forging device, comprising a foundation pit and two pressure heads located on both sides of the foundation pit and a pneumatic assembly for driving the pressure heads. The foundation pit is provided with two vertical hydraulic cylinders facing each other, a rotating disk fixed to the cylinder rods of the two vertical hydraulic cylinders, a flame nozzle located between the two rotating disks, and a central hemispherical member located at the bottom of the lower vertical hydraulic cylinder. The sides of the two rotating disks close to each other are provided with convex keys for supporting the forgings and slag leakage grooves for leaking waste slag. The upper surface of the central hemispherical member is fixed with a gasket for buffering the vertical hydraulic cylinders. During forging, the two vertical hydraulic cylinders drive the two rotating disks to vertically clamp the forgings and rotate intermittently. The present invention adopts the method of opening a foundation pit on the ground to vertically insert large aluminum alloy rods. The center of gravity of horizontal forging is lower, so that the waste slag during forging can fall into the foundation pit without being retained, greatly reducing defects such as indentations and pits.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum alloy forging equipment, and in particular relates to a large-scale aluminum alloy forging forging device. Background Art

[0002] Most forgings that can be forged from low-carbon steel can be forged from aluminum alloys. Aluminum alloys can be forged on various forging equipment, including forging hammers, mechanical presses, hydraulic presses, upsetting machines, and reaming machines. They can be forged by free forging, die forging, roll forging, upsetting, roll forging, and reaming.

[0003] With lightweighting as the goal, the demand for large aluminum alloy shafts is increasing year by year, for example, as new energy vehicles pursue improved thrust-to-weight ratios and acceleration. Large aluminum alloy shafts are made from aluminum alloy bars. These are heated in a furnace to a set temperature, turning red, and then clamped horizontally by a forklift into a forging machine. This forging machine can use either a top forging method or a simultaneous forging method with four rams surrounding the aluminum alloy bar. During the forging process:

[0004] When the red-hot aluminum alloy bar is compressed, waste slag will fall off. The waste slag will be retained on the pressure head, blocking the remaining compressed surface of the aluminum alloy bar, and may cause indentations, pits and other marks on the surface of the aluminum alloy bar, causing adverse effects;

[0005] The aluminum alloy bar is deflected by the obstruction of waste slag, and workers need to approach and use tools to straighten it. This straightening method may cause inaccurate resetting of the aluminum alloy bar. At the same time, frequent approach to the red-hot aluminum alloy bar can easily cause physical discomfort to the workers, thereby affecting the straightening and resetting of the aluminum alloy bar. Summary of the Invention

[0006] The purpose of the present invention is to provide a forging device for large aluminum alloy forgings, which adopts the method of opening a foundation pit on the ground to vertically insert large aluminum alloy bars. The center of gravity of horizontal forging is lower, so that the waste slag during forging can fall into the foundation pit without being retained, greatly reducing defects such as indentations and pits.

[0007] The technical solutions adopted by the present invention are as follows:

[0008] A large aluminum alloy forging device comprises a foundation pit, two rams located on either side of the foundation pit, and a pneumatic assembly for driving the rams. The foundation pit is provided with two facing vertical hydraulic cylinders, a rotating disk fixed to the cylinder rods of the two vertical hydraulic cylinders, a flame nozzle located between the two rotating disks, and a central hemispherical member located at the bottom of the lower vertical hydraulic cylinder.

[0009] Among them, the sides of the two rotating disks close to each other are spaced apart with convex keys for supporting the forging and slag leakage grooves for leaking waste slag, and the upper surface of the central hemispherical piece is fixed with a gasket for buffering the vertical hydraulic cylinder;

[0010] During forging, the two vertical hydraulic cylinders drive the two rotating disks to vertically clamp the forgings and rotate intermittently. The flame nozzles spray flames to keep the forgings warm and blow off the waste slag on the outside of the forgings into the foundation pit. The convex keys limit the forgings horizontally so that the waste slag on both end surfaces of the forgings fall into the foundation pit along the slag trough.

[0011] As an optional solution, a petal-shaped hopper surrounding the central hemispherical part is provided on the bottom surface of the foundation pit, and a lifting rod and a hook fixed to the upper end of the lifting rod are fixed above the petal-shaped hopper. The lifting rod is hung on the inner wall of the foundation pit through the hook. After being lowered, the petal-shaped hopper can be used to catch the waste residue. The lifting rod is hung on the inner wall of the foundation pit through the hook to prevent it from tilting, so that the petal-shaped hopper can be taken out by pulling the lifting rod later for centralized recovery of waste residue.

[0012] As an optional solution, an exhaust window and an exhaust assembly connected to the exhaust window are provided on the outer side of the central hemispherical part. A fishtail spring piece extending obliquely downward and elastic hinges fixed on both sides of the fishtail spring piece are fixed on the outer edge of the exhaust window. When the fishtail spring piece is pressed by waste slag, the elastic hinge is compressed to prevent the fishtail spring piece from being completely immersed in the exhaust window. The arc-shaped forked structure of the fishtail spring piece and the vein forked structure of the elastic hinge have good air permeability and maintain good rebound performance. When the elastic hinge rebounds, the fishtail spring piece is propped open to keep the exhaust window unobstructed, which plays a very important role in isolating the waste slag and exhaust gas in the entire forging process and has good coordination.

[0013] As an optional solution, an inner steel pipe, an inner sleeve and an outer sleeve are sequentially arranged between the lower vertical hydraulic cylinder and the adjacent rotating disk. The outer side of the inner sleeve is bonded to the inner wall of the outer sleeve. A gear ring and a driving gear meshing with the teeth of the gear ring are provided on the outside of the rotating disk. A brake motor for driving the driving gear is fixed to the outside of the outer sleeve.

[0014] As an optional solution, an electronic igniter, a frame, an electric valve and a fuel pipe are arranged in sequence laterally outside the foundation pit. The electronic igniter is fixed to the gas outlet end of the flame nozzle, and the frame surrounds the foundation pit and is penetrated by the flame nozzle.

[0015] As an optional solution, the vacuum assembly includes an air pipe fixed on the outside of the central hemisphere and connected to the exhaust window, one end of the air pipe extends out of the foundation pit and is connected to an air pump, and an adsorption tank is also provided outside the foundation pit and is inserted into the air outlet end of the air pump.

[0016] As an optional solution, the pneumatic component includes an alloy machine base fixed to the outer edge of the foundation pit, the upper surface of the alloy machine base is provided with a slide groove, a flange seat for supporting the pressure head, and a cylinder for pushing the flange seat to slide along the slide groove.

[0017] As an optional solution, a lubricating oil groove in contact with the slide groove and an oil filling hole connected to the lubricating oil groove are provided on the flange seat. When the oil filling hole is opened, it is used to introduce lubricating oil into the lubricating oil groove.

[0018] As an optional solution, the outside of the two vertical hydraulic cylinders are sequentially connected with a support member, a damper and an articulated seat, and the articulated seat is divided into two parts, which are respectively installed on the inner wall of the foundation pit and the outside of the frame.

[0019] As an optional solution, the support member includes a slide rail and a movable yoke sliding along the inner wall of the slide rail, and the movable yoke is hinged between the outer side of the vertical hydraulic cylinder and the end of the damper;

[0020] Among them, the slide rails located inside the foundation pit are all inclined to slide down the waste residue.

[0021] The technical effects achieved by the present invention are:

[0022] This invention differs from traditional large-scale vertical hydraulic forging equipment in that it creates a foundation pit in the ground, creating a hardened surface for vertically inserting large aluminum alloy rods. The rods are then forged horizontally close to the ground, resulting in a lower center of gravity and improved safety. A hydraulic system is used to vertically support the large aluminum alloy rods in the center of the pit and to straighten them from the periphery. This allows for forging waste to fall into the pit without stagnation, significantly reducing defects such as indentations and pits. Furthermore, there is no need for workers to straighten or remove waste, significantly improving the safety of the working environment.

[0023] When the two rotating disks support the large aluminum alloy rod, the present invention uses the convex key part to sink into the large aluminum alloy rod for lateral limitation. The waste slag dropped from the end of the large aluminum alloy rod is thrown along the slag leakage groove, and the flying waste slag slides along the outer arc surface of the central hemisphere, which will not hinder the central hemisphere from stably supporting a vertical hydraulic cylinder below. In addition, a gasket for buffering the vertical hydraulic cylinder is bonded to the upper surface of the central hemisphere. The gasket can be made of fluorosilicone rubber and can be deformed under pressure. The deformation zone here is used to compensate for the shaking allowance of the vertical hydraulic cylinder, which makes it convenient for the large aluminum alloy rod to avoid the waste slag to improve the reliability of vertical stability.

[0024] The present invention starts the exhaust assembly to suck out the exhaust gas, which is used to reduce eddy currents. At the same time, the fishtail spring piece is used to block the exhaust window to separate the fallen waste slag, leaving a side gap for the circulation of exhaust gas. When the fishtail spring piece is pressed by the waste slag, the elastic hinge is compressed to prevent it from being completely immersed in the exhaust window. The arc-shaped bifurcation structure of the fishtail spring piece and the vein bifurcation structure of the elastic hinge have good air permeability and maintain good rebound performance. When the elastic hinge rebounds, the fishtail spring piece is propped open to keep the exhaust window unobstructed, which plays a very important role in isolating the waste slag and exhaust gas in the entire forging process and has good coordination. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of a large aluminum alloy forging device according to the present invention;

[0026] Figure 2 It is a schematic structural diagram of the forging device of the present invention after leaving the foundation pit;

[0027] Figure 3 is a top view of the pneumatic assembly pushing the pressure head of the present invention;

[0028] Figure 4 is a bottom view of the pressure head of the present invention;

[0029] Figure 5 This is a front view of two vertical hydraulic cylinders of the present invention clamping a large aluminum alloy forging;

[0030] Figure 6 It is a front view of a single frame of the present invention;

[0031] Figure 7 is a front view of a single petal-shaped hopper of the present invention;

[0032] Figure 8 This is a front view of the central hemispherical member connected to the air extraction assembly of the present invention;

[0033] Figure 9 It is a structural schematic diagram of the central hemispherical member of the present invention;

[0034] Figure 10 It is a schematic structural diagram of the fishtail shrapnel of the present invention;

[0035] Figure 11 is a top view of the rotating disk of the present invention;

[0036] Figure 12 is a cross-sectional view of the inner steel tube of the present invention;

[0037] Figure 13 It is a top view of the slide rail of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0039] 1. Foundation pit; 2. Pressure head; 3. Vertical hydraulic cylinder; 4. Rotating plate; 5. Flame nozzle; 6. Key; 7. Slag trough; 8. Center hemisphere; 9. Gasket; 10. Petal hopper; 11. Lifting rod; 12. Hook; 13. Exhaust window; 14. Fishtail spring; 15. Elastic hinge; 16. Inner steel pipe; 17. Inner bushing; 18. Outer sleeve; 19. Ring gear; 20. Driving gear; 21. Brake motor; 22. Frame; 23. Fuel pipe; 24. Electric valve; 25. Electronic igniter; 26. Air pipe; 27. Air pump; 28. Adsorption tank; 29. ​​Alloy machine base; 30. Slide; 31. Cylinder; 32. Flange seat; 33. Lubricating oil tank; 34. Oil filling hole; 35. Damper; 36. Articulated seat; 37. Slide rail; 38. Movable yoke. DETAILED DESCRIPTION

[0040] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0041] like Figures 1-13 As shown, a large aluminum alloy forging forging device includes a foundation pit 1 and two rams 2 located on both sides of the foundation pit 1 and a pneumatic component for driving the rams 2. Two facing vertical hydraulic cylinders 3, a rotating disk 4 fixed on the cylinder rods of the two vertical hydraulic cylinders 3, a flame nozzle 5 located between the two rotating disks 4, and a central hemispherical piece 8 located at the bottom of the lower vertical hydraulic cylinder 3 are arranged in the foundation pit 1. A control signal is sent to the vertical hydraulic cylinder 3 along the relay through the external control panel to open the interval, so that it is convenient for the staff to start the forklift to clamp the heated red-hot large aluminum alloy rod, vertically insert it into the foundation pit 1, clamp it with two vertical hydraulic cylinders 3 and the rotating disk 4, and then use the pneumatic component to push the ram 2 to intermittently approach the red-hot large aluminum alloy rod for forging to achieve horizontal forging. At the same time, flames are sprayed along the flame nozzle 5 toward the position of the large aluminum alloy rod exposed outside the foundation pit 1 for heat preservation and heating.

[0042] The forging apparatus of this embodiment is relatively heavy, requiring not only consideration of foundation sinking but also vigilance against shaking caused by the forging action. Therefore, the foundation pit 1 employed in this invention is a 2m diameter pit dug into the ground. Reinforced concrete is then poured into the pit, leaving a hole at least 1m in diameter. Several rebar heads are also reserved for supporting the vertical hydraulic cylinder 3 and the central hemispherical member 8.

[0043] Refer to the attached Figure 1 、 Figure 3 and Figure 4The surface of the shaft forging has an arc. In this embodiment, the contact surface between the ram 2 and the forging is arc-shaped, which is suitable for pressing out the arc surface. In order to keep the ram 2 aligned with the center line of the forging, the pneumatic component used by the ram 2 includes an alloy machine base 29 fixed to the outer edge of the foundation pit 1 by submerged screws. The alloy machine base 29 is grounded over a large area, which not only provides a firm grip but also facilitates the ram 2 to be suspended in the air to avoid friction. At the same time, this embodiment also provides a slide 30 on the upper surface of the alloy machine base 29, a flange seat 32 for supporting the ram 2, and a cylinder 31 for pushing the flange seat 32 to slide along the slide 30. A control signal is sent to the cylinder 31 via a relay through an external control panel. Here, at least two cylinders 31 synchronously push the flange seat 32 to feed along the slide 30, which can drive the two rams 2 to forge at a specified interval each time, thereby realizing automatic forging of large aluminum alloy bars.

[0044] Furthermore, the flange seat 32 is bolted to the alloy base 29 and the cylinder 31, allowing for disassembly for partial replacement or maintenance by removing the bolts. Furthermore, the flange seat 32 provides a stable horizontal support for the cylinder 31, and the chute 30 supports the flange seat 32 upward, removing vertical load from the cylinder rod of the cylinder 31.

[0045] Forging large aluminum alloy bars, the automatic forging process is implemented with a thick center and tapered ends, and the large aluminum alloy bars must undergo axial extension. Therefore, it is very necessary to control the feed rate of the upper vertical hydraulic cylinder 3 to be lower than the feed rate of the lower vertical hydraulic cylinder 3, especially since the weight of the large aluminum alloy bar is concentrated in the lower vertical hydraulic cylinder 3. In this way, the pressure sensor monitors the pump oil pressure of the upper vertical hydraulic cylinder 3 in real time to adjust the downward pressure of the large aluminum alloy bar to dynamically change within a set range. This can not only maintain the freedom of axial deformation of the large aluminum alloy bar, but also prevent the large aluminum alloy bar from slipping.

[0046] Refer to the attached Figure 2 、 Figure 5 and Figure 11 When the large aluminum alloy rod rotates, a certain centrifugal force is generated. In order to offset the centrifugal force, in this embodiment, a convex key 6 for supporting the forging and a slag leakage groove 7 for leaking the waste slag are arranged at intervals on the side where the two rotating disks 4 are close to each other. The six convex keys 6 are integrally installed on one side of the rotating disk 4, and the slag leakage groove 7 is opened radially along the rotating disk 4. Once the large aluminum alloy rod is clamped, the convex key 6 is partially immersed in the large aluminum alloy rod for lateral limitation. The waste slag falling from the end of the large aluminum alloy rod is thrown along the slag leakage groove 7, and the flying waste slag slides along the outer arc surface of the central hemispherical part 8, which will not hinder the central hemispherical part 8 from stably supporting the vertical hydraulic cylinder 3 below. In addition, a gasket 9 for buffering the vertical hydraulic cylinder 3 is bonded to the upper surface of the central hemispherical part 8. The gasket 9 can be made of fluorosilicone rubber and can be deformed under pressure. The deformation zone here is used to compensate for the shaking allowance of the vertical hydraulic cylinder 3.

[0047] Refer to the attached Figure 1 、 Figure 2 and Figure 7 The waste residue has a high temperature and can easily damage the bottom surface of the foundation pit 1. For this reason, a petal-shaped hopper 10 surrounding the central hemispherical part 8 is provided on the bottom surface of the foundation pit 1. The petal-shaped hopper 10 can receive the waste residue through the anti-stick coating and will not be melted in a high-temperature environment. A lifting rod 11 and a hook 12 integrally fixed to the upper end of the lifting rod 11 are also fixed above the petal-shaped hopper 10 by bolts. After being lowered, the petal-shaped hopper 10 can be used to catch the waste residue, and the lifting rod 11 is hung on the inner wall of the foundation pit 1 by the hook 12 to prevent it from tilting, so that the petal-shaped hopper 10 can be taken out by pulling the lifting rod 11 for centralized recovery of waste residue.

[0048] Refer to the attached Figure 8 、 Figure 9 and Figure 10 When the flame nozzle 5 sprays flame, vortex will appear inside the foundation pit 1, which is likely to interfere with the vertical stability of the forging. It is very necessary to discharge these exhaust gases. In this embodiment, an exhaust window 13 and an exhaust assembly connected to the exhaust window 13 are provided on the outside of the central hemispherical part 8. When the exhaust assembly is started, the exhaust gas can be sucked out along the exhaust window 13 to reduce the vortex. A fishtail spring piece 14 extending obliquely downward and elastic hinges 15 bonded to both sides of the fishtail spring piece 14 are welded on the outer edge of the exhaust window 13. The fishtail spring piece 14 blocks the exhaust window 13 to separate the fallen waste slag, leaving a side gap for the flow of exhaust gas. When the fishtail spring piece 14 is pressed by the waste slag, the elastic hinge 15 is compressed to prevent it from being completely immersed in the exhaust window 13. The arc-shaped bifurcation structure of the fishtail spring piece 14 and the vein bifurcation structure of the elastic hinge 15 have good air permeability and maintain good rebound performance. When the elastic hinge 15 rebounds, the fishtail spring piece 14 is propped up to keep the exhaust window 13 unobstructed.

[0049] Refer to the attached Figure 2 、 Figure 5 and Figure 12 Because the waste slag falls downward, an inner steel pipe 16, an inner liner 17 and an outer sleeve 18 are sequentially sleeved between the lower vertical hydraulic cylinder 3 and the adjacent rotating disk 4 to prevent the waste slag from scalding or adhering to the lower vertical hydraulic cylinder 3. The outer side of the inner liner 17 is bonded to the inner wall of the outer sleeve 18. After starting the lower vertical hydraulic cylinder 3, the inner liner 17 and the outer sleeve 18 can be synchronously lifted. A gear ring 19 and a driving gear 20 meshing with the teeth of the gear ring 19 are provided on the outside of the rotating disk 4, and a brake motor 21 for driving the driving gear 20 is fixed to the outside of the outer sleeve 18 by bolts. A control signal is sent to the brake motor 21 through an external control panel along a relay, and the gear ring 19 and the driving gear 20 are rotated in an inching manner, so that the two rotating disks 4 rotate the forgings at a certain angle during the forging interval.

[0050] Furthermore, the inner steel tube 16 and the outer sleeve 18 are both made of high-temperature resistant alloy steel, and the inner sleeve 17 is made of fluorosilicone rubber. Its deformation is used to reserve a buffer space for the outer sleeve 18 to shake with the forging; and the teeth of the ring gear 19 and the driving gear 20 required for rotation also have bevels so that the fallen waste slag can be thrown away by centrifugal force to prevent the waste slag from adhering.

[0051] Refer to the attached Figure 2 、 Figure 5 and Figure 6 The controllability of the flame sprinkler 5 is very necessary. An electronic igniter 25, a frame 22, an electric valve 24 and a fuel pipe 23 are arranged in sequence outside the foundation pit 1 in a horizontal direction. The fuel pipe 23 is connected to the gas tank. Under the premise of ensuring sufficient pressure, a control signal is sent to the electric valve 24 through the external control panel along the relay to open the outlet of the fuel pipe 23 and send the gas into the flame sprinkler 5. The electronic igniter 25 is fixed to the gas outlet of the flame sprinkler 5 through a clamp. When the gas is discharged, an arc is emitted for ignition so that the flame sprinkler 5 emits a flame. In addition, a frame 22 surrounds the foundation pit 1 and is penetrated by the flame sprinkler 5. The frame 22 is used to support a vertical hydraulic cylinder 3 and the flame sprinkler 5 above to realize the straightening of the forging from above.

[0052] As an optional embodiment, a flange seat with holes is reserved on the outside of the frame 22, and steel beams, steel columns and other measures can be added to support the two vertical hydraulic cylinders 3 with heavy weight and heavy load. In particular, when the supporting force is insufficient, accidents such as breaking and cracking may occur. Sufficient attention should be paid to the safety of the forging environment. In particular, before it is put into use, a water bucket can be hung to test the load to detect the load-bearing performance of the entire forging device.

[0053] Refer to the attached Figure 1 、 Figure 2 and Figure 8 In order to avoid the foundation pit 1, the present embodiment arranges the exhaust component outside the foundation pit 1, and the exhaust component includes an air pipe 26 fixed on the outside of the central hemispherical part 8 and connected to the exhaust window 13. One end of the air pipe 26 extends out of the foundation pit 1 and is connected to an air pump 27, which is convenient for setting the air pump 27 outside the foundation pit 1. An adsorption tank 28 is also provided outside the foundation pit 1 and is inserted into the air outlet end of the air pump 27. In this way, a control signal is sent to the air pump 27 through the relay via the external control panel to suck the air in the central hemispherical part 8 along the air pipe 26 to generate a negative pressure environment, so that the exhaust gas can be sucked along the exhaust window 13, and then the exhaust gas is passed into the adsorption tank 28, which can be directly discharged to the outdoors. If indoors, the lime water in the adsorption tank 28 can be used to absorb harmful substances such as sulfur dioxide.

[0054] Refer to the attached Figure 3 and Figure 4Since the flange seat 32 and the pressure head 2 are heavy, severe friction is generated with the alloy machine base 29 during sliding. In this embodiment, a lubricating oil groove 33 in contact with the slide groove 30 and an oil filling hole 34 connected to the lubricating oil groove 33 are opened on the flange seat 32. When the oil filling hole 34 is opened, it is used to introduce lubricating oil into the lubricating oil groove 33, and the lubricating oil is distributed along the lubricating oil groove 33 to the inner wall of the lubricating oil groove 33. As the flange seat 32 moves, the lubrication surface is expanded, thereby reducing the friction between the flange seat 32 and the alloy machine base 29.

[0055] Refer to the attached Figure 5 and Figure 13 , it is difficult to maintain complete symmetry in the movement of the two pressure heads 2, and the midpoints of the two are very likely to deviate from the center line of the forging, causing the two vertical hydraulic cylinders 3 to have a slight radial offset. In this embodiment, a support member, a damper 35 and a hinge seat 36 are connected to the outside of the two vertical hydraulic cylinders 3 in sequence, and the hinge seat 36 is divided into two parts, which are respectively installed on the inner wall of the foundation pit 1 and the outside of the frame 22. The deformation of the damper 35 is used to alleviate this offset, and the support member and the hinge seat 36 are used to support the damper 35, so that the two ends of the damper 35 maintain a certain degree of freedom of vertical swinging to avoid breakage at the connection with the vertical hydraulic cylinder 3.

[0056] Refer to the attached Figure 13 In order to facilitate the swing of the damper 35, the support member of this embodiment includes a slide rail 37 and a movable yoke 38 that slides along the inner wall of the slide rail 37. The movable yoke 38 is hinged between the outer side of the vertical hydraulic cylinder 3 and the end of the damper 35. When the slide rail 37 swings relative to the hinge seat 36, the damper 35 also swings relative to the movable yoke 38, without hindering the extension and contraction of the movable yoke 38, which pushes the movable yoke 38 to slide a certain distance along the slide rail 37.

[0057] Furthermore, the slide rails 37 within the foundation pit 1 are angled downward to slide down the waste slag. These slide rails 37 surround the forgings and constrain the vertical hydraulic cylinder 3 from different directions. This also limits the degree of displacement of the vertical hydraulic cylinder 3, indirectly allowing the damper 35 to slightly expand and contract. The damper 35, hinged seat 36, slide rails 37, and movable yoke 38 are all of sufficient thickness to ensure that these components have sufficient load-bearing capacity and prevent accidents such as breakage under load.

[0058] The working principle of the present invention is: when working, the two vertical hydraulic cylinders 3 are controlled to open the interval, the forklift is started to clamp the large aluminum alloy rod that has been heated and turned red, and it is vertically inserted into the foundation pit 1 and clamped by the two vertical hydraulic cylinders 3 and the rotating disk 4, and then the pneumatic component pushes the pressure head 2 to intermittently approach the large aluminum alloy rod that is being forged and turned red hot, so as to realize horizontal forging.

[0059] At the same time, the electric valve 24 is controlled to open the outlet of the fuel pipe 23, and the gas is sent to the flame nozzle 5. The electronic igniter 25 emits an arc for ignition so that the flame nozzle 5 emits a flame. In addition, a frame 22 surrounds the foundation pit 1 and is penetrated by the flame nozzle 5. The frame 22 is used in conjunction with the support parts and the damper 35 to support a vertical hydraulic cylinder 3 above and unload the reaction force of the flame nozzle 5, so as to realize the straightening of the forging from above.

[0060] The convex key 6 is partially immersed in the large aluminum alloy rod for lateral limitation. The waste slag dropped from the end of the large aluminum alloy rod is thrown along the slag leakage groove 7, and the flying waste slag slides along the outer arc surface of the central hemispherical part 8, which will not hinder the central hemispherical part 8 from stably supporting the vertical hydraulic cylinder 3 below. In addition, the gasket 9 on the upper surface of the central hemispherical part 8 is used to buffer the vertical hydraulic cylinder 3, and it itself can be deformed under pressure. The deformation zone here is used to compensate for the shaking allowance of the vertical hydraulic cylinder 3.

[0061] Starting the exhaust assembly can suck out exhaust gas along the exhaust window 13 to reduce eddy currents, and the fishtail spring piece 14 is used to block the exhaust window 13 from falling waste residue, leaving a side gap for the circulation of exhaust gas. When the fishtail spring piece 14 is pressed by the waste residue, the elastic hinge 15 is compressed to prevent it from being completely immersed in the exhaust window 13. The arc-shaped bifurcation structure of the fishtail spring piece 14 and the vein bifurcation structure of the elastic hinge 15 have good air permeability and maintain good rebound performance. When the elastic hinge 15 rebounds, the fishtail spring piece 14 is propped open to keep the exhaust window 13 unobstructed.

[0062] The foregoing merely represents optional embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A large aluminum alloy forging device, characterized by: The invention comprises a foundation pit (1), two pressure heads (2) located on both sides of the foundation pit (1), and a pneumatic assembly for driving the pressure heads (2), wherein the foundation pit (1) is provided with two vertical hydraulic cylinders (3) facing each other, a rotating disk (4) fixed to the cylinder rods of the two vertical hydraulic cylinders (3), a flame nozzle (5) located between the two rotating disks (4), and a central hemispherical member (8) located at the bottom of the lower vertical hydraulic cylinder (3); Wherein, a convex key (6) for supporting the forging and a slag leakage groove (7) for leaking waste slag are arranged at intervals on the side of the two rotating disks (4) close to each other, and a gasket (9) for buffering the vertical hydraulic cylinder (3) is fixed on the upper surface of the central hemispherical member (8); During forging, the two vertical hydraulic cylinders (3) drive the two rotating disks (4) to vertically clamp the forging and rotate intermittently, and the flame nozzle (5) sprays flames to keep the forging warm and blows off the waste slag on the outside of the forging into the foundation pit (1). The convex key (6) limits the forging horizontally so that the waste slag on both end surfaces of the forging falls into the foundation pit (1) along the slag leakage groove (7).

2. A large aluminum alloy forging device according to claim 1, characterized in that: The bottom surface of the foundation pit (1) is provided with a petal-shaped hopper (10) surrounding the central hemispherical member (8), and a lifting rod (11) and a hook (12) fixed to the upper end of the lifting rod (11) are fixed above the petal-shaped hopper (10), and the lifting rod (11) is suspended on the inner wall of the foundation pit (1) through the hook (12).

3. The large aluminum alloy forging device according to claim 1, characterized in that: An exhaust window (13) and an exhaust assembly connected to the exhaust window (13) are provided on the outer side of the central hemispherical member (8); a fishtail spring piece (14) extending obliquely downward and elastic hinges (15) fixed on both sides of the fishtail spring piece (14) are fixed on the outer edge of the exhaust window (13); the fishtail spring piece (14) compresses the elastic hinge (15) when pressed by waste residue, and the elastic hinge (15) opens the fishtail spring piece (14) when rebounding, so as to keep the exhaust window (13) unobstructed.

4. The large aluminum alloy forging device according to claim 1, characterized in that: An inner steel pipe (16), an inner sleeve (17) and an outer sleeve (18) are sequentially sleeved between one of the vertical hydraulic cylinders (3) and the adjacent rotating disk (4). The outer side of the inner sleeve (17) is bonded to the inner wall of the outer sleeve (18). A gear ring (19) and a driving gear (20) meshing with the teeth of the gear ring (19) are provided on the outside of the rotating disk (4). A brake motor (21) for driving the driving gear (20) is fixed on the outside of the outer sleeve (18).

5. The large aluminum alloy forging device according to claim 1, characterized in that: An electronic igniter (25), a frame (22), an electric valve (24) and a fuel pipe (23) are sequentially arranged laterally outside the foundation pit (1); the electronic igniter (25) is fixed to the gas outlet end of the flame nozzle (5); the frame (22) surrounds the foundation pit (1) and is penetrated by the flame nozzle (5).

6. The large aluminum alloy forging device according to claim 3, characterized in that: The air extraction assembly includes an air pipe (26) fixed on the outside of the central hemispherical member (8) and connected to the exhaust window (13); one end of the air pipe (26) extends out of the foundation pit (1) and is connected to an air pump (27); an adsorption pool (28) is also provided outside the foundation pit (1) and is inserted into the air outlet end of the air pump (27).

7. The large aluminum alloy forging device according to claim 1, characterized in that: The pneumatic assembly includes an alloy machine base (29) fixed to the outer edge of the foundation pit (1), and the upper surface of the alloy machine base (29) is provided with a slide groove (30), a flange seat (32) for supporting the pressure head (2), and a cylinder (31) for pushing the flange seat (32) to slide along the slide groove (30).

8. The large aluminum alloy forging device according to claim 7, characterized in that: The flange seat (32) is provided with a lubricating oil groove (33) in contact with the slide groove (30) and an oil injection hole (34) in communication with the lubricating oil groove (33). When the oil injection hole (34) is opened, lubricating oil is introduced into the lubricating oil groove (33).

9. The large aluminum alloy forging device according to claim 5, characterized in that: The two vertical hydraulic cylinders (3) are connected to the outside in sequence with a support member, a damper (35) and an articulated seat (36). The articulated seat (36) is divided into two parts, which are respectively installed on the inner wall of the foundation pit (1) and the outside of the frame (22).

10. The large aluminum alloy forging device according to claim 9, characterized in that: The support member includes a slide rail (37) and a movable yoke (38) sliding along the inner wall of the slide rail (37), and the movable yoke (38) is hinged between the outer side of the vertical hydraulic cylinder (3) and the end of the damper (35); The slide rails (37) located inside the foundation pit (1) are all arranged at an angle to slide down the waste residue.

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