Rotary continuous forging table and forging process

Abstract

The invention relates to the technical field of rotary continuous forging tables, in particular to a rotary continuous forging table and a forging process. The rotary continuous forging table comprises a base, and the top face of the base is provided with a sunken part which is partially sunken downwards; the mold comprises a plurality of lower mold bodies and an upper mold body, the upper mold body can ascend and descend in the vertical direction, and the lower mold bodies are rotatably arranged on the top face of the base, so that the lower mold bodies can sequentially rotate to the position under the upper mold body and the position above the concave part; the hinging device is used for rotating and falling into the concave part by virtue of self gravity when the lower die rotates to the upper part of the concave part; the driving device is used for driving the lower die to rotate, and the lower die is hinged to the driving device through a hinge device; and the purging device is arranged in the concave part. According to the mold, the demolding difficulty can be reduced, the temperatures of the first lower half mold and the second lower half mold are reduced while oxide skins in the first lower half mold and the second lower half mold are cleaned, and the problem that time and labor are wasted when the oxide skins are manually cleaned is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary continuous forging tables, in particular to a rotary continuous forging table and a forging process. Background Art

[0002] Continuous forging uses dedicated continuous forging equipment to feed metal materials heated to a certain temperature into the forging machine through a continuous feeding device for forging. During the forging process, the metal material is subjected to continuous pressure between the upper and lower dies of the forging machine, undergoing plastic deformation, and finally obtaining forgings of the desired shape and size.

[0003] For example, a Chinese invention patent document with publication number CN116921604B discloses a mold for continuous forging of a stepped shaft, including a base, a turntable, a mold, a driving device, a limiting device, a mold clamping device, a third telescopic rod and a pushing device, wherein the turntable is movably mounted on the base, the driving device, the limiting device, the mold clamping device, the third telescopic rod and the pushing device are fixedly mounted at corresponding positions of the base, the mold is fixed to the turntable by bolts, the driving device can cooperate with the turntable, the limiting device can cooperate with the mold to limit the movement of the mold, the position of the mold clamping device corresponds to the mold, the position of the third telescopic rod corresponds to the mold, and the position of the pushing device corresponds to the molding cavity of the mold.

[0004] Although the above patent achieves low-cost and high-efficiency production, it still has the following shortcomings in actual use: since the metal material needs to be heated to a certain temperature before forging, a certain amount of oxide scale will be generated on the surface of the metal material during the forging process. These oxide scales will remain in the forging die after forging is completed. The remaining oxide scales need to be cleaned manually each time, which is time-consuming and labor-intensive; moreover, the connection between the workpiece and the die after forging is relatively tight, making it difficult to demold the workpiece. Summary of the invention

[0005] The object of the present invention is to provide a rotary continuous forging table and a forging process to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a rotary continuous forging table, comprising:

[0007] A base, wherein the top surface of the base has a partially downwardly recessed portion;

[0008] The mold includes a plurality of lower molds and an upper mold, wherein the upper mold can move up and down in the vertical direction, and the plurality of lower molds are rotatably arranged on the top surface of the base, so that the plurality of lower molds can be rotated successively to the bottom of the upper mold and the top of the concave part;

[0009] The hinge device is used for the lower mold to rotate and fall into the inside of the recessed part by relying on its own gravity when the lower mold rotates to the top of the recessed part;

[0010] A driving device, used for driving the lower die to rotate, and the lower die is hinged to the driving device through a hinge device;

[0011] A purge device is disposed in the recessed portion, and a purge port of the purge device faces the mold cavity of the lower mold; and

[0012] The guide block is arranged inside the recessed part, and a spiral surface is arranged on the top of the guide block. The low end of the spiral surface is lower than the height of the lowest point of the lower mold inside the recessed part, and the high end of the spiral surface is connected with the top surface of the base.

[0013] Preferably, the lower mold comprises a first lower mold half and a second lower mold half which are hingedly connected, and the hinge axis of the first lower mold half and the second lower mold half is located in the lower surface of the lower mold;

[0014] A horizontally arranged arc rod is fixed inside the recessed portion, and the first lower half mold and the second lower half mold located inside the recessed portion are supported and opened by the arc rod.

[0015] Preferably, the driving device comprises a ring gear, a gear meshing with the ring gear, and a motor driving the gear to rotate;

[0016] The first lower half mold is hingedly connected to the gear ring through a hinge device.

[0017] Preferably, the articulated device comprises a first fixed block, an articulated shaft and a second fixed block, wherein the articulated shaft is fixedly connected to the first lower half mold via the first fixed block, the second fixed block is rotatably sleeved on the articulated shaft, and the second fixed block is fixedly connected to the gear ring.

[0018] Preferably, a protruding piece is fixed on the circumferential surface of the hinge shaft;

[0019] The forging table also includes a lifting device arranged inside the recessed portion, the lifting device including a vertical frame and a driving member driving the vertical frame to move up and down between the protruding member and the gear ring;

[0020] The vertical frame includes a vertical rod, a strip groove provided on a side of the vertical rod facing the protruding member, a support rod, a pin shaft, a spring sheet and a limit block;

[0021] The top end of the support rod is hinged to the inside of the strip groove through a pin shaft, and the bottom end of the support rod protrudes outside the notch of the strip groove through a spring sheet;

[0022] The limit block is fixed on the top end of the support rod and is used to limit the maximum inclination angle of the support rod.

[0023] Preferably, the driving member comprises a telescopic cylinder and a connecting rod, the bottom end of the telescopic cylinder is mounted on the inner bottom surface of the recessed portion, and the connecting rod is fixedly connected between the vertical rod and the piston rod of the telescopic cylinder.

[0024] Preferably, two vertical rods are provided, each vertical rod is correspondingly provided with a support rod, and a cross rod is fixed between the two vertical rods.

[0025] Preferably, a positioning hole is formed on the upper surface of the lower mold, and a positioning pin matched with the positioning hole is fixed on the bottom of the upper mold.

[0026] Preferably, the purging device comprises a collecting and distributing pipe and a nozzle fixedly mounted on a side of the collecting and distributing pipe, and the nozzle is connected to a high-pressure gas source through an air pipe.

[0027] A forging process, the forging process is based on the above-mentioned rotary continuous forging table, comprising the following steps:

[0028] S1. Placing the blank to be forged on the lower die;

[0029] S2, using the driving device to drive the lower die to rotate a certain angle, so that the lower die and the blank rotate and move to the bottom of the upper die;

[0030] S3, driving the upper die and the lower die to close the die and then separate the die to realize the forging of the blank;

[0031] S4, continue to use the driving device to drive the lower die and the forged blank to rotate, so that the lower die and the forged blank fall into the recessed portion, and start the purging device. On the one hand, the arc rod changes the angle between the hinged first lower half die and the second lower half die, and the forged blank is demolded; on the other hand, the purging device can purge and remove the oxide scale remaining in the lower die and reduce the temperature of the lower die;

[0032] S5. Continue to use the driving device to drive the first lower half mold and the second lower half mold to rotate, so that the first lower half mold and the second lower half mold are moved back to the top surface of the base under the action of the spiral surface of the guide block, waiting for the next forging.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention provides a base with a recessed portion, and cooperates with a hinge device and a driving device, so that when the lower die rotates to the top of the recessed portion, it will rotate and fall into the recessed portion under the action of its own gravity, and further splits the lower die into a first lower half-die and a second lower half-die that are hingedly connected, so that the forged blank falling on the lower die in the recessed portion is easier to fall off, and then the first lower half-die and the second lower half-die are purged with high-pressure gas in combination with a purging device, so that the oxide scale inside the first lower half-die and the second lower half-die is cleaned and the temperature of the first lower half-die and the second lower half-die is reduced, thereby eliminating the time-consuming and labor-intensive problem of manually cleaning the oxide scale.

[0035] 2. The present invention can realize multiple shaking of the first lower mold and the second lower mold by setting a lifting device in conjunction with the arc rod, thereby changing the relative angle between the first lower mold and the second lower mold and the high-pressure gas blown out by the purging device, so as to more thoroughly purge and remove the oxide scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0038] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0039] Figure 4 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of the base and the guide block of the present invention;

[0041] Figure 6 It is a side view structural schematic diagram of the present invention;

[0042] Figure 7 For the present invention Figure 6 Schematic diagram of the local structure;

[0043] Figure 8 It is a structural schematic diagram of the vertical frame of the present invention;

[0044] Fig. 9 It is a schematic diagram of the partial cross-sectional structure of the vertical frame of the present invention in a side view.

[0045] In the figure: 1, base; 11, recessed portion; 12, top surface; 2, mold; 21, lower mold; 211, first lower half mold; 212, second lower half mold; 213, positioning hole; 22, upper mold; 221, positioning pin; 3, hinge device; 31, first fixed block; 32, hinge shaft; 33, second fixed block; 34, protruding member; 4, driving device; 41, gear ring; 42, gear; 5, Purge device; 51, air pipe; 52, collecting and distributing pipe; 53, nozzle; 6, guide block; 61, spiral surface; 62, low end; 63, high end; 7, lifting device; 71, telescopic cylinder; 72, connecting rod; 73, vertical frame; 731, vertical rod; 732, horizontal rod; 733, strip groove; 734, support rod; 735, pin shaft; 736, spring sheet; 737, limit block; 8, arc rod. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 - Fig. 9 , the present invention provides a technical solution:

[0048] A rotary continuous forging table includes a base 1, a die 2, a hinge device 3, a drive device 4, a purge device 5, a guide block 6, a lifting device 7 and an arc rod 8. The specific structures of these eight components and the relationship between them are described in detail below.

[0049] like Figure 1 , Figure 5 As shown, the top surface 12 of the base 1 has a partially downwardly recessed portion 11, and the base 1 is annular as a whole; the recessed portion 11 is used for demoulding after the blank is forged and for cleaning the oxide scale that falls off the blank during the forging process.

[0050] The die 2 is used to forge the blank heated to a certain temperature so that the blank is forged into a predetermined shape. The die 2 includes a plurality of lower dies 21 and an upper die 22, wherein the upper die 22 can move up and down in the vertical direction (the upper die 22 can be driven by a hydraulic cylinder or other components to move up and down, which is a prior art and will not be described in detail here). The plurality of lower dies 21 are rotatably arranged on the top surface 12 of the base 1, so that the plurality of lower dies 21 can be rotated successively to the bottom of the upper die 22 and the top of the recessed portion 11. A positioning hole 213 is provided on the upper surface of the lower die 21, and a positioning pin 221 matching the positioning hole 213 is fixed to the bottom of the upper die 22.

[0051] Furthermore, the lower mold 21 includes a first lower mold half 211 and a second lower mold half 212 which are hingedly connected. The first lower mold half 211 and the second lower mold half 212 are sequentially arranged along the radial direction of the base 1. The hinge axis of the first lower mold half 211 and the second lower mold half 212 is located inside the lower surface of the lower mold 21. Specifically, when the lower surface of the lower mold 21 contacts the top surface 12, the lower surface of the lower mold 21 is a horizontal plane. At this time, the hinge axis of the first lower mold half 211 and the second lower mold half 212 is located inside the lower surface of the lower mold 21, ensuring that the first lower mold half 211 and the second lower mold half 212 can rotate around the hinge axis; a horizontally arranged arc rod 8 is fixed inside the recessed portion 11, and the first lower mold half 211 and the second lower mold half 212 falling inside the recessed portion 11 are supported and opened by the arc rod 8; specifically, as Figure 6 - Figure 8The figure shows the state of the first lower die 211 and the second lower die 212 falling inside the recessed portion 11. At this time, the first lower die 211 and the second lower die 212 remain in an open state under the support and limiting action of the arc rod 8. In this state, the forged blanks in the first lower die 211 and the second lower die 212 are easier to demold. At the same time, the first lower die 211 and the second lower die 212 in this state are also easier to clean the oxide scale.

[0052] The driving device 4 is used to drive the lower mold 21 to rotate. Specifically, in the present embodiment, the driving device 4 drives the lower mold 21 to rotate in a counterclockwise direction, and the lower mold 21 is hinged to the driving device 4 via the hinge device 3; further, the driving device 4 includes a ring gear 41, a gear 42 meshing with the ring gear 41, and a motor driving the gear 42 to rotate. The motor here can be a servo motor or a stepper motor. The ring gear 41 is slidably connected to the base 1 via structures such as an annular guide rail; the first lower half mold 211 is hingedly connected to the ring gear 41 via the hinge device 3.

[0053] When the lower mold 21 rotates to the top of the recessed portion 11, the hinge device 3 rotates and falls into the interior of the recessed portion 11 by its own gravity; specifically, Figure 2 and Figure 4 As shown, the hinge device 3 includes a first fixed block 31, a hinge shaft 32 and a second fixed block 33, wherein the hinge shaft 32 is fixedly connected to the first lower half mold 211 through the first fixed block 31, the second fixed block 33 is rotatably sleeved on the hinge shaft 32 through a bearing, and the second fixed block 33 is fixedly connected to the ring gear 41.

[0054] The purging device 5 is arranged in the recessed portion 11, and the purging port of the purging device 5 is facing the mold cavity of the lower die 21, so that the mold cavity of the lower die 21 can be purged with high-pressure gas to remove the oxide scale inside the mold cavity that falls off from the blank due to forging, and at the same time reduce the temperature of the lower die 21 to prepare for the next forging operation; the purging device 5 includes a collecting and distributing pipe 52 and a nozzle 53 fixedly installed on the side of the collecting and distributing pipe 52, and the nozzle 53 is connected to the high-pressure gas source through the air pipe 51.

[0055] The guide block 6 is arranged inside the recessed portion 11, and a spiral surface 61 is arranged on the top thereof. The low end 62 of the spiral surface 61 is lower than the height of the lowest point of the lower mold 21 located inside the recessed portion 11, and the high end 63 of the spiral surface 61 is connected with the top surface 12 of the base 1. The connection here means that the height of the high end 63 is the same as the height of the top surface 12 of the base 1, and the two are fixedly connected, so that the lower mold 21 can be restored to a state of contact with the top surface 12 of the base 1 through the spiral surface 61.

[0056] The basic working principle of the above scheme is: first, the heated billet to be forged is placed in a suitable lower die 21 among the multiple lower dies 21 (as shown in the figure, four lower dies 21 are taken as an example, and the lower die 21 located directly below the upper die 22 is used as the starting point for the counterclockwise explanation, wherein the lower die 21 located directly below the upper die 22 is located at the forging station, and the next lower die 21 in the counterclockwise direction is located at the demoulding and cleaning station, and the next lower die 21 located at the demoulding and cleaning station is the recovery station, and the lower die 21 located at the demoulding and cleaning station is the recovery station. The next lower die 21 of the recovery station is the loading station, and the heated blank to be forged is placed in the lower die 21 of the loading station), and then the motor of the driving device 4 is started to drive the gear 42 to rotate, and the gear 42 drives the ring gear 41 to rotate, so that the ring gear 41 drives the multiple lower dies 21 to rotate, wherein the lower die 21 of the loading station and the blank to be forged thereon will be rotated and transported to the bottom of the upper die 22, and then the driving device 4 is turned off, and then the cooperation of the lower die 21 and the upper die 22 is used to complete the forging of the blank. After the forging is completed, the driving device 4 is started again to move the forged blank and the lower die 21 toward the demoulding and cleaning station. During this process, the lower die 21 will enter the recessed portion 11 due to the existence of the hinge device 3, and under the limiting effect of the arc rod 8, the first lower half die 211 and the second lower half die 212 constituting the lower die 21 are opened. At this time, the forged blank located in the lower die 21 will be demoulded from the lower die 21 due to the opening of the first lower half die 211 and the second lower half die 212. The lower mold 21 falls to complete demoulding; when the lower mold 21 is completely moved to the demoulding cleaning station, the purging device 5 uses high-pressure gas to purge the first lower mold 211 and the second lower mold 212, cleaning the internal oxide scale of the first lower mold 211 and the second lower mold 212 while reducing the temperature of the first lower mold 211 and the second lower mold 212; then, with the next drive of the driving device 4, in conjunction with the guide block 6, the first lower mold 211 and the second lower mold 212 can be restored to a horizontal state, that is, to the recovery station.

[0057] In the above scheme, by providing a base 1 with a recessed portion 11, and then cooperating with a hinge device 3 and a driving device 4, when the lower die 21 rotates to above the recessed portion 11, it will rotate and fall into the recessed portion 11 under the action of its own gravity, and further by splitting the lower die 21 into two parts, a first lower half die 211 and a second lower half die 212, which are hingedly connected, the forged blank on the lower die 21 in the recessed portion 11 is easier to fall off, and then the first lower half die 211 and the second lower half die 212 are purged with high-pressure gas in combination with the purging device 5, so as to clean the internal oxide scale of the first lower half die 211 and the second lower half die 212 while reducing the temperature of the first lower half die 211 and the second lower half die 212, thereby eliminating the time-consuming and labor-intensive problem of manually cleaning the oxide scale.

[0058] In order to completely remove the oxide scale on the lower mold 21, a protrusion 34 is fixed on the circumferential surface of the hinge shaft 32; and the forging table also includes a lifting device 7 arranged inside the recessed portion 11, the lifting device 7 includes a vertical frame 73 and a driving member that drives the vertical frame 73 to rise and fall between the protrusion 34 and the gear ring 41; the vertical frame 73 includes a vertical rod 731, a strip groove 733 opened on the side of the vertical rod 731 facing the protrusion 34, a support rod 734, a pin shaft 735, a spring sheet 736 and a limit block 737; the top end of the support rod 734 is hinged to the inside of the strip groove 733 through the pin shaft 735, and the bottom end of the support rod 734 protrudes outside the notch of the strip groove 733 through the spring sheet 736; the limit block 737 is fixed to the top end of the support rod 734, and is used to limit the maximum inclination angle of the support rod 734.

[0059] Furthermore, the driving component includes a telescopic cylinder 71 and a connecting rod 72. The telescopic cylinder 71 can be a hydraulic cylinder, etc. Of course, the driving component can also be fixedly connected to the upper mold 22, so that the vertical frame 73 rises and falls with the upper mold 22. The bottom end of the telescopic cylinder 71 is installed on the inner bottom surface of the recessed portion 11, and the connecting rod 72 is fixedly connected between the vertical rod 731 and the piston rod of the telescopic cylinder 71.

[0060] In this embodiment, two vertical rods 731 are provided, each vertical rod 731 is correspondingly provided with a support rod 734 , and a horizontal rod 732 is fixed between the two vertical rods 731 .

[0061] The working principle of the lifting device 7 in cooperation with the protruding member 34 is as follows: under normal conditions, Figure 8 and Fig. 9As shown, the bottom end of the support rod 734 protrudes from the notch of the strip groove 733 under the support of the spring sheet 736 and contacts the upper surface of the protruding piece 34; the telescopic cylinder 71 is started, and the vertical frame 73 is driven downward by the connecting rod 72. At this time, since the bottom end of the support rod 734 is pressed against the upper surface of the protruding piece 34, the downward movement of the support rod 734 will push the protruding piece 34 and the hinge shaft 32 to rotate around the axis of the hinge shaft 32 itself. Since the hinge shaft 32 is fixedly connected to the first lower half mold 211, This will cause the first lower mold 211 to rotate along with the hinge shaft 32, so that the first lower mold 211 and the second lower mold 212 are separated from the arc rod 8. When the protruding member 34 rotates to a predetermined angle, the support rod 734 is separated from the protruding member 34. At this time, the support rod 734 continues to move downward, but the protruding member 34 will rotate in the opposite direction due to the gravity of the first lower mold 211 and the second lower mold 212 until the first lower mold 211 and the second lower mold 212 are placed on the arc rod 8 again. The rod 8 can be used to generate vibration to shake off the oxide scale. At the same time, since the angle of the first lower mold 211 and the second lower mold 212 will change during the separation of the first lower mold 211 and the second lower mold 212 from the arc rod 8, and the angle of the high-pressure gas sprayed by the purging device 5 remains unchanged, the high-pressure gas sprayed by the purging device 5 will purge the oxide scale remaining on the first lower mold 211 and the second lower mold 212 from different angles, making it easier for the high-pressure gas to enter the gap between the oxide scale and the first lower mold 211 and the second lower mold 212, thereby making the oxide scale fall off from the first lower mold 211 and the second lower mold 212 more thoroughly. In this embodiment, multiple support rods 734 can be set on the same vertical rod 731; when the vertical frame 73 moves down to the lowest point, it will be driven upward by the telescopic cylinder 71, and the protruding member 34 at this time will squeeze the support rod 734 to retract it into the strip groove 733.

[0062] A forging process, the forging process is based on the above-mentioned rotary continuous forging table, comprising the following steps:

[0063] S1, placing the blank to be forged on the lower die 21;

[0064] S2, using the driving device 4 to drive the lower die 21 to rotate a certain angle, so that the lower die 21 and the blank are rotated and moved to the bottom of the upper die 22;

[0065] S3, driving the upper die 22 and the lower die 21 to close the die and then separate the die to achieve forging of the blank;

[0066] S4, continue to use the driving device 4 to drive the lower die 21 and the forged blank to rotate, so that the lower die 21 and the forged blank fall into the recessed portion 11, and start the purging device 5. On the one hand, the arc rod 8 changes the angle between the hinged first lower half die 211 and the second lower half die 212, and the forged blank is demolded; on the other hand, the purging device 5 can purge and remove the residual oxide scale in the lower die 21 and reduce the temperature of the lower die 21;

[0067] S5. Continue to use the driving device 4 to drive the first lower half mold 211 and the second lower half mold 212 to rotate, so that the first lower half mold 211 and the second lower half mold 212 are moved back to the top surface 12 of the base 1 under the action of the spiral surface 61 of the guide block 6, waiting for the next forging.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary continuous forging table, characterized in that: include: A base, wherein the top surface of the base has a partially downwardly recessed portion; The mold includes a plurality of lower molds and an upper mold, wherein the upper mold can move up and down in the vertical direction, and the plurality of lower molds are rotatably arranged on the top surface of the base, so that the plurality of lower molds can be rotated successively to the bottom of the upper mold and the top of the concave part; The hinge device is used for the lower mold to rotate and fall into the inside of the recessed part by relying on its own gravity when the lower mold rotates to the top of the recessed part; A driving device, used for driving the lower die to rotate, and the lower die is hinged to the driving device through a hinge device; A purge device is disposed in the recessed portion, and a purge port of the purge device faces the mold cavity of the lower mold; and The guide block is arranged inside the recessed part, and a spiral surface is arranged on the top of the guide block. The low end of the spiral surface is lower than the height of the lowest point of the lower mold inside the recessed part, and the high end of the spiral surface is connected with the top surface of the base.

2. A rotary continuous forging table according to claim 1, characterized in that: The lower mold comprises a first lower mold half and a second lower mold half which are hingedly connected, and a hinge axis of the first lower mold half and the second lower mold half is located in the lower surface of the lower mold; A horizontally arranged arc rod is fixed inside the recessed portion, and the first lower half mold and the second lower half mold located inside the recessed portion are supported and opened by the arc rod.

3. A rotary continuous forging table according to claim 2, characterized in that: The driving device includes a gear ring, a gear meshing with the gear ring, and a motor driving the gear to rotate; The first lower half mold is hingedly connected to the gear ring through a hinge device.

4. A rotary continuous forging table according to claim 3, characterized in that: The hinge device includes a first fixed block, a hinge shaft and a second fixed block, wherein the hinge shaft is fixedly connected to the first lower half mold through the first fixed block, the second fixed block is rotatably sleeved on the hinge shaft, and the second fixed block is fixedly connected to the gear ring.

5. A rotary continuous forging table according to claim 4, characterized in that: A protruding piece is fixed on the circumferential surface of the hinge shaft; The forging table also includes a lifting device arranged inside the recessed portion, the lifting device including a vertical frame and a driving member driving the vertical frame to move up and down between the protruding member and the gear ring; The vertical frame includes a vertical rod, a strip groove provided on a side of the vertical rod facing the protruding member, a support rod, a pin shaft, a spring sheet and a limit block; The top end of the support rod is hinged to the inside of the strip groove through a pin shaft, and the bottom end of the support rod protrudes outside the notch of the strip groove through a spring sheet; The limit block is fixed on the top end of the support rod and is used to limit the maximum inclination angle of the support rod.

6. A rotary continuous forging table according to claim 5, characterized in that: The driving member comprises a telescopic cylinder and a connecting rod, the bottom end of the telescopic cylinder is installed on the inner bottom surface of the recessed part, and the connecting rod is fixedly connected between the vertical rod and the piston rod of the telescopic cylinder.

7. A rotary continuous forging table according to claim 5, characterized in that: Two vertical rods are provided, each vertical rod is correspondingly provided with a support rod, and a horizontal rod is fixed between the two vertical rods.

8. The rotary continuous forging table according to claim 1, characterized in that: A positioning hole is provided on the upper surface of the lower die, and a positioning pin matched with the positioning hole is fixed on the bottom of the upper die.

9. A rotary continuous forging table according to claim 1, characterized in that: The purging device comprises a collecting and distributing pipe and a nozzle fixedly installed on the side of the collecting and distributing pipe, and the nozzle is connected with a high-pressure gas source through an air pipe.

10. A forging process, characterized in that: The forging process is based on the rotary continuous forging table according to any one of claims 1 to 9, comprising the following steps: S1. Placing the blank to be forged on the lower die; S2, using the driving device to drive the lower die to rotate a certain angle, so that the lower die and the blank rotate and move to the bottom of the upper die; S3, driving the upper die and the lower die to close the die and then separate the die to realize the forging of the blank; S4, continue to use the driving device to drive the lower die and the forged blank to rotate, so that the lower die and the forged blank fall into the recessed portion, and start the purging device. On the one hand, the arc rod changes the angle between the hinged first lower half die and the second lower half die, and the forged blank is demolded; on the other hand, the purging device can purge and remove the oxide scale remaining in the lower die and reduce the temperature of the lower die; S5. Continue to use the driving device to drive the first lower half mold and the second lower half mold to rotate, so that the first lower half mold and the second lower half mold are moved back to the top surface of the base under the action of the spiral surface of the guide block, waiting for the next forging.

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