Multi-station continuous gear shaft forging device and method

Abstract

The invention discloses a multi-station continuous gear shaft forging device and method, and relates to the technical field of gear shaft forging devices. A multi-station continuous gear shaft forging device comprises a base and further comprises a supporting limiting groove, a plurality of gear shafts and a plurality of gear shafts, the rotating disc is rotationally arranged on the base, and a plurality of forging dies are arranged on the rotating disc in a sliding mode; the hydraulic equipment is positioned above the forging station of the base; according to the continuous forging device, the rotating disc rotating intermittently is arranged, and the multiple forging dies used for forging forming are arranged on the rotating disc, so that blanks can be continuously put into the forging dies in the forging production process, and continuous forging is achieved; in the forging process, the distance between the forging station and the feeding station is long, and only a good safe distance is formed, so that in the forging process, at most manual feeding and taking are needed, and therefore the burden of manual operation can be relieved while the forging efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of forging gear shaft devices, and more specifically, relates to a multi-station continuous forging gear shaft device. Background Art

[0002] A gear shaft is a kind of component widely used in mechanical equipment, and its structure is simple and practical. The production of gear shafts is usually carried out through forging processes. Forging is a processing method that uses forging machinery to apply pressure to metal billets, causing them to undergo plastic deformation to obtain forgings with certain mechanical properties, certain shapes, and dimensions. Pressing the blank of the gear shaft into the gear shaft by forging is a common means in the production process. After forging and forming, subsequent finishing processes are carried out to produce gear shafts that meet the dimensional requirements. Most of the existing forging equipment is semi-automatic, and some steps in the forging process still require manual operation. According to the forging process, it is usually divided into: putting in the blank, forging and pressing, demolding, and taking out the gear shaft. In the above forging steps, there is usually only one mold for forming. Therefore, problems such as low forging efficiency and many manual operation steps often occur during forging. Continuous mechanical work will also make workers tired, resulting in product errors and even accidents during forging. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a multi-station continuous forging gear shaft device that can overcome or at least partially solve the above problems.

[0004] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is: a multi-station continuous forging gear shaft device, including a base, and further including: a support limiting groove opened on the base; a rotating disk rotatably arranged on the base, and a plurality of forging molds are slidably arranged on the rotating disk; a hydraulic device located above the forging station of the base; an upper sliding sleeve fixedly connected to the bottom surface of the rotating disk at the position of the forging mold, the upper sliding sleeve slides in the support limiting groove, the forging mold is slidably connected in the sliding cavity of the upper sliding sleeve, and a stepped end is provided in the upper sliding sleeve; a demolding rod is elastically slidably connected in the upper sliding sleeve, the top end of the demolding rod is slidably connected inside the forging mold, and a second top plate is fixedly connected to the outer periphery of the demolding rod at the bottom surface of the forging mold. Continuously put the blank from the feeding station of the base into the forging cavities of a plurality of forging molds on the rotating disk, the hydraulic device approaches the forging mold and applies pressure for forging, and drives the demolding rod to slide downward to store energy. When the hydraulic device moves away from the forging mold, the demolding rod pushes the forging mold to rise in the rotating disk and demolds the workpiece in the forging mold.

[0005] Preferably, a lower sliding sleeve is fixedly connected to the bottom of the upper sliding sleeve. The lower sliding sleeve is located in the installation cavity of the base. The lower sliding sleeve is communicated with the upper sliding sleeve. A lower sleeve cover is installed at the bottom of the lower sliding sleeve. A first top plate is connected to the outer periphery of the demolding rod. The first top plate is located in the cavity of the lower sliding sleeve. A spring is sleeved on the demolding rod between the first top plate and the lower sleeve cover.

[0006] Further, a liquid outlet channel is formed in the demolding rod. One end of the liquid outlet channel is communicated with the forging cavity. After the forging die completes forging and demolding and taking the workpiece at the forging station, under the drive of the rotation of the rotating disk, the liquid outlet channel automatically sprays a demolding agent into the forging cavity.

[0007] Further, the outer periphery of the first top plate fits with the inner wall of the cavity of the lower sliding sleeve. The first top plate is slidably connected in the cavity. The other end of the liquid outlet channel is communicated with the cavity. A liquid suction pipe is fixedly connected to the lower sliding sleeve. The liquid suction pipe is communicated with the cavity. Check valves are arranged in both the liquid outlet channel and the liquid suction pipe. While the forging die rotates around the base driven by the rotating disk, it also rotates itself, and drives the first top plate to reciprocate up and down in the cavity.

[0008] Preferably, a double-thread is formed on the outer periphery of the demolding rod located in the cavity. The first top plate is threadedly connected to the demolding rod through the double-thread.

[0009] Further, the end of the demolding rod penetrates to the outside of the lower sliding sleeve. A speed increaser is installed at the end of the demolding rod. The output end of the speed increaser is connected to the end of the demolding rod. The speed increaser is connected to the lower sliding sleeve through a mounting arm rod. A spur gear is installed at the input end of the speed increaser. A gear ring is installed in the installation cavity of the base. The spur gear and the gear ring are meshed. One end of the gear ring extends to one side of the forging station, and the other end of the gear ring extends to one side of the feeding station.

[0010] Further, a spray hole is formed in the top end of the demolding rod. The spray hole is inclined and is communicated with the liquid outlet channel.

[0011] Further, lower ventilation holes and upper ventilation holes are respectively formed in the upper sliding sleeve. Both the lower ventilation holes and the upper ventilation holes are communicated with the sliding cavity to dissipate heat from the bottom of the forging die.

[0012] Further, a blade group is fixedly connected to the outer periphery of the demolding rod located in the sliding cavity. The blade group is located between the lower ventilation holes and the upper ventilation holes.

[0013] A forging method for a multi-station continuous forging gear shaft mainly includes the following steps: S1. Place the blank into the forging die on the rotating disk in sequence, and the rotating disk will carry the blank in the forging die to the forging station of the base; S2. The hydraulic equipment presses the blank in the forging die to make the blank take shape in the forging cavity; S3. When one end of the hydraulic equipment moves away from the forging die, one end of the demolding rod extends into the forging cavity to complete the demolding of the workpiece in the forging cavity; S4. Subsequently, the rotating disk continues to rotate, making the spur gear mesh with the gear ring, driving the demolding rod to rotate, and realizing the automatic spraying of the release agent in the cavity into the forging cavity; S5. Subsequently, after the forging die on the rotating disk moves to the loading station, continue to put the blank into the forging die.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By setting a rotating disk that rotates intermittently, and there are multiple forging dies for forging and forming on the rotating disk, during the forging production process, the blank can be continuously put into the forging die, thus realizing continuous forging; during the forging process, the distance between the forging station and the loading station is relatively far, and only this has a good safety distance. Therefore, during the forging process, at most only manual feeding and material taking are required. Thus, while improving the forging efficiency, the burden of manual operation can be reduced, and safety accidents can be effectively avoided; And using the demolding rod with the demolding function, after the forging die is demolded, the demolding rod rotates, driving the first top plate to extrude the release agent in the cavity to automatically spray from the liquid outlet channel into the forging cavity, and combined with the inclined design of the spray holes, the release agent is evenly sprayed on the inner wall of the forging cavity; Moreover, the rotating demolding rod can also complete improving the air circulation speed of the end of the forging die in the sliding cavity through the arranged blade group, thereby effectively improving the cooling effect on the end of the forging die. Description of the Drawings

[0015] In the drawings: Figure 1 is a three-dimensional structural schematic diagram of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 2 is a structural schematic diagram of the support limiting groove of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 3 is a structural schematic diagram of the installation cavity of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 4 is a structural schematic diagram of the forging station and the loading station of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 5Schematic structural diagrams of the rotating disk and forging die of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 6 Schematic structural diagram of the gear ring of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 7 Schematic structural diagrams of the upper sliding sleeve and lower sliding sleeve of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 8 Schematic structural diagram of the demolding rod of a multi-station continuous forging gear shaft device proposed by the present invention; Figure 9 Schematic structural diagrams of the liquid outlet channel and spring of a multi-station continuous forging gear shaft device proposed by the present invention.

[0016] In the figure: 1. Base; 11. Support limiting groove; 12. Installation cavity; 2. Rotating disk; 21. Forging die; 211. Forging cavity; 22. Upper sliding sleeve; 221. Sliding cavity; 222. Lower sliding sleeve; 223. Cavity; 224. Double-thread; 225. First top plate; 226. Lower sleeve cover; 227. Step end; 228. Spring; 23. Demolding rod; 231. Second top plate; 232. Blade group; 233. Lower ventilation hole; 234. Upper ventilation hole; 24. Speed increaser; 241. Installation arm rod; 25. Straight gear; 26. Liquid outlet channel; 261. Spray hole; 262. Liquid suction pipe; 27. Gear ring; 3. Hydraulic equipment; 4. Forging station; 5. Loading station. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0018] Embodiment 1: Refer to Figures 1 - 9, A multi-station continuous forging gear shaft device, including a base 1, further comprising: a support limiting groove 11 opened on the base 1; a rotating disk 2 rotatably arranged on the base 1, and a plurality of forging dies 21 slidably arranged on the rotating disk 2; a hydraulic device 3 located above the forging station 4 of the base 1; an upper sliding sleeve 22 fixedly connected to the bottom surface of the rotating disk 2 at the position of the forging die 21, the upper sliding sleeve 22 sliding in the support limiting groove 11, the forging die 21 slidably connected in the sliding cavity 221 of the upper sliding sleeve 22, and a stepped end 227 provided in the upper sliding sleeve 22. When the hydraulic device 3 pushes the forging die 21 to slide downwards, the forging die 21 slides downwards and abuts against the stepped end 227 to limit the downward stroke of the forging die 21; a demoulding rod 23 elastically slidably connected in the upper sliding sleeve 22, the top end of the demoulding rod 23 slidably connected in the forging die 21, and a second top plate 231 fixedly connected to the outer periphery of the demoulding rod 23 at the bottom surface of the forging die 21. Continuously place the blank from the feeding station 5 of the base 1 into the forging cavities 211 of the plurality of forging dies 21 on the rotating disk 2. The hydraulic device 3 approaches the forging die 21 and applies pressure to forge the blank, and drives the demoulding rod 23 to slide downwards to store energy. When the hydraulic device 3 moves away from the forging die 21, the demoulding rod 23 pushes the forging die 21 to rise in the rotating disk 2 and demoulds the workpiece in the forging die 21; A lower sliding sleeve 222 is fixedly connected to the bottom of the upper sliding sleeve 22. The lower sliding sleeve 222 is located in the installation cavity 12 of the base 1. The lower sliding sleeve 222 is communicated with the upper sliding sleeve 22. A lower cover 226 is installed at the bottom of the lower sliding sleeve 222. A first top plate 225 is connected to the outer periphery of the demoulding rod 23. The first top plate 225 is located in the cavity 223 of the lower sliding sleeve 222. A spring 228 is sleeved on the demoulding rod 23 between the first top plate 225 and the lower cover 226; When the device is in use, the rotating disk 2 is driven to rotate by a motor installed in the base 1, and six forging dies 21 are slidably arranged on the rotating disk 2 (in this embodiment, the number of forging dies 21 is set to 6, but the number of forging dies 21 on the rotating disk 2 is not specifically limited, and the number of forging dies 21 can be reasonably set according to the actual design size of the rotating disk 2), so that the blank can be sequentially and continuously placed into the forging die 21; The rotating rotating disk 2 brings the blank in the forging die 21 to the forging station 4 of the base 1, and the hydraulic device 3 applies pressure to forge the blank in the forging die 21, so that the blank is formed in the forging cavity 211; When the hydraulic device 3 applies pressure to the blank in the forging die 21, the hydraulic device 3 will push the forging die 21 to slide down on the rotating disk 2. When the forging die 21 slides down, it will push the demolding rod 23 to move downward together through the second top plate 231. And the pressed blank will also push the demolding rod 23 to move downward in the forging cavity 211, making the top end of the demolding rod 23 horizontal with the bottom wall of the forging cavity 211. When the demolding rod 23 moves downward, it will generate a downward pressure on the spring 228 through the first top plate 225, causing the spring 228 to store energy; It should be understood that the diameter of one end of the demolding rod 23 located in the forging cavity 211 is smaller than the inner diameter of the forging cavity 211. In the initial state of the demolding rod 23, the height of the end located in the forging cavity 211 is higher than the bottom wall of the forging cavity 211; After forging is completed, one end of the hydraulic device 3 moves away from the forging die 21. When moving away from the forging die 21, the spring 228 pushes the first top plate 225, causing the demolding rod 23 to push the forging die 21 to rise. At the same time, under the push of the spring 228, the demolding rod 23 slides into the forging cavity 211, and then ejects the workpiece in the forging cavity 211, facilitating the removal of the workpiece from the forging cavity 211; The removal method can be manual clamping removal or automatic clamping removal by a manipulator; Therefore, by setting the intermittently rotating rotating disk 2 and arranging a plurality of forging dies 21 for forging and forming on the rotating disk 2, during the forging production process, blanks can be continuously placed into the forging dies 21, realizing continuous forging; during the forging process, the distance between the forging station 4 and the feeding station 5 is relatively far, only having a good safety distance. Therefore, during the forging process, at most only manual feeding and material taking are required, thus improving the forging efficiency while reducing the burden of manual operation.

[0019] Example 2: Refer to Figure 8 、 Figure 9 A multi-station continuous forging gear shaft device is basically the same as that in Example 1. Further: A liquid outlet channel 26 is provided in the demolding rod 23. One end of the liquid outlet channel 26 is communicated with the forging cavity 211. When the forging die 21 completes forging and demolding and material taking at the forging station 4, under the drive of the rotation of the rotating disk 2, the liquid outlet channel 26 automatically sprays a demolding agent into the forging cavity 211; The outer periphery of the first top plate 225 fits against the inner wall of the cavity 223 of the lower sliding sleeve 222. The first top plate 225 is slidably connected within the cavity 223 through a limiting groove formed on the inner wall of the cavity 223. The other end of the liquid outlet channel 26 is connected to the cavity 223. A liquid suction pipe 262 is fixedly connected to the lower sliding sleeve 222, and the liquid suction pipe 262 is connected to the cavity 223. Check valves are provided in both the liquid outlet channel 26 and the liquid suction pipe 262. While the forging die 21 rotates around the base 1 driven by the rotating disc 2, it also rotates on its own axis, and drives the first top plate 225 to reciprocate up and down within the cavity 223; A double - threaded portion 224 is provided on the outer periphery of the demolding rod 23 within the cavity 223. The first top plate 225 is threadedly connected to the demolding rod 23 through the double - threaded portion 224; The end of the demolding rod 23 penetrates outside the lower sliding sleeve 222. A speed increaser 24 is installed at the end of the demolding rod 23. The output end of the speed increaser 24 is connected to the end of the demolding rod 23. The speed increaser 24 is connected to the lower sliding sleeve 222 through a mounting arm rod 241. A spur gear 25 is installed at the input end of the speed increaser 24. A gear ring 27 is installed within the installation cavity 12 of the base 1. The spur gear 25 and the gear ring 27 are meshed. One end of the gear ring 27 extends to one side of the forging station 4, and the other end of the gear ring 27 extends to one side of the loading station 5; When the blank is forged at the forging station 4, the rotating disc 2 will continue to rotate. When the rotating disc 2 rotates, it will cause the spur gear 25 on the end of the demolding rod 23 to mesh with the gear ring 27. At this time, due to the setting of the speed increaser 24, the demolding rod 23 rotates. When rotating, the double - threaded portion 224 on the demolding rod 23 will drive the first top plate 225 to reciprocate up and down within the cavity 223. Then, when the first top plate 225 slides in the direction close to the lower cover 226, it squeezes the release agent within the cavity 223 into the liquid outlet channel 26, and then sprays it into the forging cavity 211 to spray the release agent on the inner wall of the forging cavity 211, thus further eliminating the need for manual operation; When the first top plate 225 moves upward, it will suck the release agent in the liquid storage box connected to the lower sliding sleeve 222 through the liquid suction pipe 262 and supplement it into the cavity 223. Thus, the demolding rod 23 rotates on its own axis while rotating around the base 1, achieving the effect of automatically spraying the release agent from the liquid outlet channel 26 into the forging cavity 211; Before the forging die 21 sprayed with the release agent reaches the loading station 5, the spur gear 25 and the gear ring 27 disengage, and the demolding rod 23 stops rotating, facilitating the placement of the blank into the forging cavity 211; It should be understood that the speed increaser 24 is a tool that increases the initial rotational speed through the meshing of multiple gears of different sizes.

[0020] Example 3: Refer to Figure 9, A multi-station continuous forging gear shaft device is basically the same as that in Embodiment 2. Further, a spray hole 261 is opened inside the top end of the demolding rod 23. The spray hole 261 is inclined and is communicated with the liquid outlet channel 26. By obliquely opening the spray hole 261 at the top end of the demolding rod 23, the rotation of the demolding rod 23 can be utilized to evenly spray the demolding agent ejected from the liquid outlet channel 26 onto the inner wall of the forging cavity 211, thereby effectively improving the ejection effect of the demolding agent.

[0021] Embodiment 4: Refer to Figure 7 , Figure 8 , Figure 9 , A multi-station continuous forging gear shaft device is basically the same as that in Embodiment 3. Further, a lower ventilation hole 233 and an upper ventilation hole 234 are respectively opened in the upper sliding sleeve 22. The lower ventilation hole 233 and the upper ventilation hole 234 are both communicated with the sliding cavity 221 for dissipating heat from the bottom of the forging die 21. The forging die 21 is usually in a shape with an open upper end and a closed lower end. Therefore, when forging the blank, there will be heat in the forging die 21. Since the upper end of the forging die 21 is open, the heat dissipation effect is good, but the heat dissipation effect at the lower end of the forging die 21 is relatively poor. The forging die 21 will undergo thermal expansion and contraction, resulting in uneven heat distribution between the upper part with good heat dissipation and the lower part with poor heat dissipation, causing deformation of the forging cavity 211 and ultimately easily leading to a decline in the dimensional quality of the forged workpiece. Therefore, by providing the lower ventilation hole 233 and the upper ventilation hole 234, the heat dissipation effect at the lower end of the forging die 21 is improved. A blade group 232 is fixedly connected to the outer periphery of the demolding rod 23 in the sliding cavity 221. The blade group 232 is located between the lower ventilation hole 233 and the upper ventilation hole 234. Since the demolding rod 23 will rotate after the workpiece is demolded, a blade group 232 is installed on the demolding rod 23 so that when the demolding rod 23 rotates, it can inhale air through the lower ventilation hole 233 and discharge it through the upper ventilation hole 234, thereby improving the heat dissipation effect of the forging die 21 located in the sliding cavity 221.

[0022] Embodiment 5: Refer to Figures 1 - 9 , A forging method for a multi-station continuous forging gear shaft mainly includes the following steps: S1. The blanks are sequentially placed into the forging die 21 on the rotating disk 2, and the rotating rotating disk 2 drives the blanks in the forging die 21 to the forging station 4 of the base 1. S2. The hydraulic device 3 applies pressure to forge the blanks in the forging die 21 so that the blanks are formed in the forging cavity 211. S3. When one end of the hydraulic device 3 is far away from the forging die 21, one end of the demolding rod 23 extends into the forging cavity 211 to complete the demolding of the workpiece in the forging cavity 211. S4. Subsequently, the rotating disk 2 continues to rotate, so that the spur gear 25 meshes with the gear ring 27, driving the demolding rod 23 to rotate, and realizing the automatic spraying of the mold release agent in the cavity 223 into the forging cavity 211. S5. Subsequently, after the forging die 21 on the rotating disk 2 is moved to the feeding station 5, the blank is continuously placed into the forging die 21.

[0023] Therefore, by setting the rotating disk 2 that rotates intermittently, and a plurality of forging dies 21 for forging and forming are arranged on the rotating disk 2, during the forging production process, the blank can be continuously placed into the forging die 21 to achieve continuous forging; during the forging process, the distance between the forging station 4 and the feeding station 5 is relatively far, and only this has a good safety distance. Therefore, during the forging process, at most only manual feeding and blank taking are required, thereby improving the forging efficiency and reducing the burden of manual operation at the same time. And by using the demolding rod 23 for demolding, after the forging die 21 is demolded, the demolding rod 23 rotates, driving the first top plate 225 to extrude the mold release agent in the cavity 223 to automatically spray from the liquid outlet channel 26 into the forging cavity 211, and combined with the inclined design of the spray holes 261, the mold release agent is evenly sprayed on the inner wall of the forging cavity 211. Moreover, the rotating demolding rod 23 can also complete the improvement of the air flow velocity at the end of the forging die 21 in the sliding cavity 221 through the arranged blade group 232, thereby effectively improving the cooling effect on the end of the forging die 21.

[0024] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to it as an equivalent embodiment with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-station continuous forging gear shaft device, including a base (1), characterized in that, It further includes: A support limiting groove (11) is provided on the base (1); A rotating disk (2) is rotatably arranged on the base (1), and a plurality of forging dies (21) are slidably arranged on the rotating disk (2); A hydraulic device (3) is located above the forging station (4) of the base (1); An upper sliding sleeve (22) is fixedly connected to the bottom surface of the rotating disk (2) at the position of the forging die (21). The upper sliding sleeve (22) slides in the support limiting groove (11), and the forging die (21) is slidably connected in the sliding cavity (221) of the upper sliding sleeve (22). A stepped end (227) is provided in the upper sliding sleeve (22); A demolding rod (23) is elastically and slidably connected in the upper sliding sleeve (22). The top end of the demolding rod (23) is slidably connected inside the forging die (21). A second top plate (231) is fixedly connected to the outer periphery of the demolding rod (23) at the bottom surface of the forging die (21); The blank is continuously placed from the feeding station (5) of the base (1) into the forging cavities (211) of a plurality of forging dies (21) on the rotating disk (2). The hydraulic device (3) approaches the forging die (21) and applies pressure to forge the blank, and drives the demolding rod (23) to slide downward to store energy; When the hydraulic device (3) moves away from the forging die (21), the demolding rod (23) pushes the forging die (21) to rise in the rotating disk (2), and demolds the workpiece in the forging die (21).

2. The multi-station continuous forging gear shaft device according to claim 1, characterized in that, The bottom of the upper sliding sleeve (22) is fixedly connected with a lower sliding sleeve (222). The lower sliding sleeve (222) is located in the installation cavity (12) of the base (1). The lower sliding sleeve (222) is communicated with the upper sliding sleeve (22). A lower sleeve cover (226) is installed at the bottom of the lower sliding sleeve (222). A first top plate (225) is connected to the outer periphery of the demolding rod (23). The first top plate (225) is located in the cavity (223) of the lower sliding sleeve (222). A spring (228) is sleeved on the demolding rod (23) between the first top plate (225) and the lower sleeve cover (226); 3. A multi-station continuous forging gear shaft device according to claim 2, characterized in that, A liquid outlet channel (26) is provided in the demolding rod (23). One end of the liquid outlet channel (26) is communicated with the forging cavity (211); When the forging die (21) completes forging and demolding and taking out the material at the forging station (4), under the drive of the rotation of the rotating disk (2), the liquid outlet channel (26) automatically sprays a demolding agent into the forging cavity (211); 4. A multi-station continuous forging gear shaft device according to claim 3, characterized in that, The outer periphery of the first top plate (225) fits with the inner wall of the cavity (223) of the lower sliding sleeve (222). The first top plate (225) is slidably connected in the cavity (223). The other end of the liquid outlet channel (26) is communicated with the cavity (223). A liquid suction pipe (262) is fixedly connected to the lower sliding sleeve (222). The liquid suction pipe (262) is communicated with the cavity (223). One-way valves are provided in both the liquid outlet channel (26) and the liquid suction pipe (262); The forging die (21) rotates around the base (1) driven by the rotating disk (2) while rotating itself, and drives the first top plate (225) to reciprocate up and down in the cavity (223).

5. A multi-station continuous forging gear shaft device according to claim 4, characterized in that, A bidirectional thread (224) is provided on the outer periphery of the demolding rod (23) located in the cavity (223), and the first top plate (225) is threadedly connected to the demolding rod (23) through the bidirectional thread (224).

6. The multi-station continuous forging gear shaft device according to claim 4, wherein, The end of the demolding rod (23) penetrates outside the lower sliding sleeve (222). A speed increaser (24) is installed at the end of the demolding rod (23). The output end of the speed increaser (24) is connected to the end of the demolding rod (23). The speed increaser (24) is connected to the lower sliding sleeve (222) through the mounting arm rod (241). A spur gear (25) is installed at the input end of the speed increaser (24). A gear ring (27) is installed in the installation cavity (12) of the base (1). The spur gear (25) and the gear ring (27) are meshed. One end of the gear ring (27) extends to one side of the forging station (4), and the other end of the gear ring (27) extends to one side of the loading station (5).

7. A multi-station continuous forging gear shaft device according to claim 6, characterized in that, A spray hole (261) is provided inside the top end of the demolding rod (23). The spray hole (261) is inclined and communicates with the liquid outlet channel (26).

8. A multi-station continuous forging gear shaft device according to claim 4, characterized in that, Lower ventilation holes (233) and upper ventilation holes (234) are respectively provided in the upper sliding sleeve (22). The lower ventilation holes (233) and the upper ventilation holes (234) are both communicated with the sliding cavity (221) to dissipate heat from the bottom of the forging die (21).

9. A multi-station continuous forging gear shaft device according to claim 8, characterized in that, A blade group (232) is fixedly connected to the outer periphery of the demolding rod (23) located in the sliding cavity (221). The blade group (232) is located between the lower ventilation hole (233) and the upper ventilation hole (234).

10. A forging method for a multi-station continuous forging gear shaft, comprising a multi-station continuous forging gear shaft device as described in claim 9, characterized in that, It mainly includes the following steps: S1. The blanks are sequentially placed into the forging die (21) on the rotating disk (2), and the rotating rotating disk (2) takes the blanks in the forging die (21) to the forging station (4) of the base (1). S2. The hydraulic equipment (3) presses and forges the blanks in the forging die (21) so that the blanks are formed in the forging cavity (211). S3. When one end of the hydraulic equipment (3) moves away from the forging die (21), one end of the demolding rod (23) extends into the forging cavity (211) to complete the demolding of the workpiece in the forging cavity (211). S4. Subsequently, the rotating disk (2) continues to rotate, so that the spur gear (25) meshes with the gear ring (27) to drive the demolding rod (23) to rotate, realizing the automatic spraying of the mold release agent in the cavity (223) into the forging cavity (211). S5. Subsequently, after the forging die (21) on the rotating disk (2) moves to the loading station (5), blanks are continuously placed into the forging die (21).

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