Production process and forging equipment for connecting hollow variable cross-section oil cylinder with large forge piece

Abstract

The invention discloses a production process and forging equipment for connecting a hollow variable cross-section oil cylinder with a large forge piece, and belongs to the technical field of forge piece forging. Forging equipment for large forgings connected with hollow variable-cross-section oil cylinders comprises a rack and further comprises a pressing head arranged on the upper side of the rack, and hydraulic equipment used for driving the pressing head to ascend and descend is arranged on the rack; the forging table is arranged on the rack and located on the lower side of the pressing head, and a rotating motor used for driving the forging table to rotate is arranged on the rack; the lifting mechanism is arranged on the side edge of the rack and used for driving the forging table to ascend and descend in the vertical direction of the rack. The forging table is automatically adjusted to move downwards and the forge piece is automatically adjusted to move upwards when the forge piece is controlled to be overturned, so that the forge piece overturning step is simplified, the forge piece overturning efficiency is improved, the distance does not need to be adjusted in one direction to leave an overturning space for the forge piece, the size of forging equipment is conveniently reduced, and then the forging cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of forging, and in particular to a production process for connecting large forgings with a hollow variable-section oil cylinder and a forging device thereof. Background Art

[0002] Forging is a processing method that uses a forging machine to apply pressure to a metal blank to cause it to undergo plastic deformation to obtain a forging with certain mechanical properties, a certain shape and size. During the forging process, the forging needs to be turned over. In the prior art, the invention patent with the patent application number CN221966708U discloses a forging efficient turning device for forging processing, which drives the forging placed on a circular plate to rotate, and can then forge from all six sides of the forging, thereby improving the forging effect of the forging; however, when turning over the forging, it is necessary to first control the stepper motor to operate, so that the clamped forging moves up along the No. 1 threaded rod, and then control the rotating motor to control the forging to turn over, which is relatively cumbersome, resulting in a long forging turning time and low forging efficiency; at the same time, since it only controls the forging to move up away from the circular plate to leave a turning space for the forging to turn over, it is necessary to make the forging move up a sufficiently high distance, which leads to a large equipment size and increases the cost of the forging equipment. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to propose a production process for connecting large forgings with a hollow variable-section oil cylinder and a forging device thereof.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A hollow variable-section oil cylinder connected large forging forging equipment, comprising a frame, and also comprising: A pressure head, the pressure head is arranged on the upper side of the frame, and a hydraulic device for driving the pressure head to rise and fall is arranged on the frame; A forging table, which is arranged on a frame and placed under the pressure head, and a rotating motor for driving the forging table to rotate is arranged on the frame; A lifting mechanism, which is arranged on the side of the frame and is used to drive the forging table to rise and fall along the vertical direction of the frame; Wherein, the lifting mechanism is provided with a turning mechanism for driving the forging to turn over.

[0005] Preferably, the flipping mechanism includes a motor seat arranged on the side of the frame, a flipping motor arranged in the motor seat, an electric push rod connected to the output shaft of the flipping motor, and a clamping plate arranged at the end of the electric push rod, and the clamping plate is movably opposed to the forging placed on the forging table.

[0006] Preferably, the lifting mechanism includes a lower screw rod rotatably connected to the lower side of the frame, a lower sleeve threadedly connected to the lower screw rod, and a support plate fixedly connected to the lower sleeve, a secondary bevel gear 1 is provided on the top of the lower screw rod, a main bevel gear meshing with the secondary bevel gear 1 is provided on the electric push rod, the support plate and the bottom wall of the forging table are movably abutted against each other, and an elastic telescopic rod is provided between the forging table and the output shaft of the rotating motor.

[0007] Preferably, a movable gear is fixed on the lower screw rod, and a rack rack meshing with the movable gear is slidably connected to the frame. An elastic telescopic tube is fixed on one side of the rack rack, and an auxiliary support plate is fixed on the end of the elastic telescopic tube away from the rack rack. The forging table is evenly circumferentially provided with a plurality of slots that are plugged into the auxiliary support plates.

[0008] Preferably, the lifting mechanism also includes an upper screw rod rotatably connected to the upper side of the frame, an upper sleeve threadedly connected to the upper screw rod, a connecting plate fixedly connected to the upper sleeve, and a connecting seat arranged on the lower side of the connecting plate. The electric push rod is rotatably connected to the connecting seat, and a secondary bevel gear 2 meshing with the main bevel gear is provided at the bottom of the upper screw rod. A sliding groove for sliding the motor seat is provided on the frame.

[0009] Preferably, the upper screw rod and the lower screw rod have the same structure, both comprising a screw rod body and a sliding rod slidably connected in the screw rod body, the sliding rod is rotatably connected to the connecting seat, a guide groove is provided on the inner wall of the screw rod body, and a guide strip sliding in the guide groove is fixed on the outer wall of the sliding rod.

[0010] Preferably, a driving gear is provided on the elastic telescopic rod, a driven gear is rotatably provided on the frame and meshes with the driving gear, a reel is provided on the driven gear, a pull rope is wound around the reel, and the end of the pull rope away from the reel passes through the frame and is connected to the auxiliary support plate.

[0011] Preferably, a plurality of vacancies are provided on the circumference of the driving gear, and the driving gear is intermittently meshed with the driven gear.

[0012] Preferably, the forging table includes an active table fixedly connected to the elastic telescopic rod and a placement table rotatably connected to the outside of the active table, a movable block is fixedly provided on the outside of the active table, an annular groove for the movable block to slide is opened on the placement table, and an annular spring is arranged between the annular groove and the movable block.

[0013] The present invention also discloses a hollow variable cross-section oil cylinder connected large forging production process, by using a hollow variable cross-section oil cylinder connected large forging forging equipment, including the following steps: S1: The forging is placed on the forging table, and the pressure head is controlled to move downward by the hydraulic equipment. The pressure head performs multiple reciprocating forgings on the forging table. When it is necessary to forge other surfaces of the forging, the pressure head is moved up and reset; S2: Control the electric push rod to drive the clamping plate to move toward the forging, so that the clamping plates on both sides of the frame clamp the forging; S3: Control the operation of the flip motor. The output shaft of the flip motor drives the clamped forging to flip through the electric push rod. When the electric push rod rotates, it drives the main bevel gear to mesh with the auxiliary bevel gear 1 and the auxiliary bevel gear 2; When the main bevel gear and the auxiliary bevel gear are meshed and driven, the upper sleeve moves upward along the rotating upper screw shaft, and the upper sleeve drives the clamped forging to move upward through the connecting plate and the connecting seat, leaving a turning space for the forging to turn over; When the main bevel gear and the auxiliary bevel gear are meshed and transmitted, the lower sleeve moves downward along the rotating lower screw shaft, and the lower sleeve no longer supports the lower side of the forging table. When the lower screw rotates, the movable gear and the rack rack are meshed and transmitted, and the rack rack drives the auxiliary support plate to move to the outside of the slot through the elastic telescopic tube. After the auxiliary support plate moves out of the slot, the forging table is pulled back and moved downward by the stretched elastic telescopic rod and its own gravity, further leaving a turning space for the forging to turn over. S4: After the flip motor drives the forging to flip to the other side, the electric push rod is controlled to retract so that the clamping plate no longer clamps the forging, and the forging falls on the forging table supported by the support plate at this time. Then, the output shaft of the flip motor is controlled to rotate in the opposite direction, and the hydraulic device controls the pressure head to move downward, so that the pressure head performs forging operation on the forging on the reset forging table; S5: When it is necessary to forge the clamped surface of the forging, the rotating motor is controlled to run, and the output shaft of the rotating motor drives the active table to rotate. At this time, the placement table outside the active table is limited by the auxiliary support plate, so that the active table rotates relative to the placement table. As the elastic telescopic rod rotates, the active gear and the driven gear mesh and transmit, and the driven gear drives the reel to reel in the pull rope, and the pull rope pulls the auxiliary support plate out of the slot, releasing the restriction of the auxiliary support plate on the placement table. The placement table rotates and resets under the action of the annular spring, so that the placement table drives the forging on the upper side to rotate; S6: Then repeat steps S2-S3 to complete the forging work on multiple surfaces of the forging.

[0014] Compared with the prior art, the present invention provides a production process for large hollow variable-section oil cylinder connection forgings and its forging equipment, which has the following beneficial effects: 1. The hollow variable-section oil cylinder is connected to the large forging production process and forging equipment. By automatically adjusting the downward movement of the forging table and the upward movement of the forging when controlling the forging to flip, the forging flipping steps are simplified and the forging flipping efficiency is improved. There is no need to adjust the distance in only one direction to leave enough flipping space for the forging, which is convenient for reducing the size of the forging equipment and thus reducing the forging cost. 2. The hollow variable cross-section oil cylinder is connected to the large forging production process and forging equipment. On the basis of the support plate supporting the forging table, an auxiliary support plate is set to support the forging table again, thereby improving the stability of the support for the forging table, and avoiding that when the pressure head presses down on the forging on the forging table, the force is only supported by the support plate on the forging table, which will affect the transmission of the subsequent lower screw and the lower sleeve, thereby ensuring the continuous and stable progress of the forging process; 3. The hollow variable-section oil cylinder is connected to the large forging production process and forging equipment thereof. By controlling the operation of the rotating motor, the output shaft of the rotating motor drives the active table to rotate. At this time, the placement table outside the active table is limited by the auxiliary support plate, so that the active table rotates relative to the placement table. As the elastic telescopic rod rotates, the active gear and the driven gear mesh and transmit, and the driven gear drives the reel to reel in the pull rope. The pull rope pulls the auxiliary support plate out of the slot, releasing the restriction of the auxiliary support plate on the placement table. The placement table rotates and resets under the action of the annular spring, so that the placement table drives the upper forging to rotate, so that the rotated forging is subsequently clamped and flipped, so as to realize the forging work on multiple surfaces of the forging and ensure the forging effect of the forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 For the present invention Figure 1 A partial enlarged structural diagram of the middle part; Figure 3 For the present invention Figure 1 A schematic diagram of the partially enlarged structure of the middle B part; Figure 4 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of the middle C part; Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 7 For the present invention Figure 6 The schematic diagram of the partial enlarged structure of the middle D part; Figure 8 It is a schematic diagram of the external structure of the active station of the present invention; Fig. 9 It is a structural schematic diagram of the placement table of the present invention; Fig.10 is a schematic diagram of the external structure of the slide bar of the present invention; Fig.11 It is a schematic diagram of the cross-sectional structure of the screw rod body of the present invention.

[0016] In the figure: 1, frame; 101, rotating motor; 102, elastic telescopic rod; 2, pressing head; 201, hydraulic equipment; 3, forging table; 301, active table; 3011, movable block; 302, placing table; 3021, slot; 3022, annular groove; 3023, annular spring; 4, motor seat; 401, flip motor; 402, electric push rod; 403, clamping plate; 5, lower screw rod; 501, lower sleeve; 502, support plate; 503, secondary cone Gear 1; 6. Main bevel gear; 7. Movable gear; 701. Rack rack; 702. Elastic telescopic tube; 703. Auxiliary support plate; 8. Upper screw rod; 801. Upper sleeve; 802. Connecting plate; 803. Connecting seat; 804. Secondary bevel gear 2; 9. Screw rod body; 901. Slide rod; 9011. Guide bar; 902. Guide groove; 10. Slide groove; 11. Driving gear; 111. Driven gear; 112. Reel; 113. Pull rope; 12. Vacant part. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] Example 1: Reference Figure 1 , Figure 4 and Figure 6 A hollow variable cross-section oil cylinder connected large forging forging equipment, comprising a frame 1, and also comprising: The pressure head 2 is arranged on the upper side of the frame 1, and the frame 1 is provided with a hydraulic device 201 for driving the pressure head 2 to rise and fall; A forging table 3, which is arranged on the frame 1 and placed on the lower side of the pressing head 2, and a rotating motor 101 for driving the forging table 3 to rotate is arranged on the frame 1; A lifting mechanism, which is arranged on the side of the frame 1 and is used to drive the forging table 3 to rise and fall along the vertical direction of the frame 1; Wherein, a turning mechanism for driving the forging to turn over is arranged on the lifting mechanism.

[0020] Specifically, the forging is placed on the forging table 3, and the pressure head 2 is controlled to move downward by the hydraulic equipment 201. The pressure head 2 performs up and down reciprocating forging on the forging table 3 for multiple times. When it is necessary to forge other surfaces of the forging, the pressure head 2 is moved up and reset, and the flipping mechanism is controlled to work. When controlling the flipping of the forging, the forging table 3 is automatically adjusted to move downward and the forging is moved upward, thereby simplifying the forging flipping steps and improving the forging flipping efficiency. There is no need to adjust the distance in only one direction to leave enough flipping space for the forging, which is convenient for reducing the size of the forging equipment and further reducing the forging cost. When it is necessary to forge the clamping surface of the forging, the rotating motor 101 is controlled to drive the forging table 3 to rotate, and then the flipping mechanism is controlled to work, so as to achieve forging of multiple surfaces of the forging.

[0021] Example 2: Reference Figure 1 , Figure 4 , Figure 6 and Figure 7 A hollow variable-section cylinder connected to a large forging forging device. On the basis of Example 1, further, the flipping mechanism includes a motor seat 4 arranged on the side of the frame 1, a flipping motor 401 arranged in the motor seat 4, an electric push rod 402 connected to the output shaft of the flipping motor 401, and a clamping plate 403 arranged at the end of the electric push rod 402, and the clamping plate 403 is movably opposed to the forging placed on the forging table 3.

[0022] Specifically, when the forging on the forging table 3 is flipped, the electric push rod 402 is first controlled to drive the clamping plate 403 to approach the forging so that the clamping plate 403 clamps the forging, and then the flipping motor 401 is controlled to run so that the flipping motor 401 drives the clamped forging to flip through the electric push rod 402.

[0023] Example 3: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig.10 and Fig.11 , a hollow variable-section cylinder connected to a large forging forging device, based on Example 2, further, the lifting mechanism includes a lower screw rod 5 rotatably connected to the lower side of the frame 1, a lower sleeve 501 threadedly connected to the lower screw rod 5, and a support plate 502 fixedly connected to the lower sleeve 501, a secondary bevel gear 503 is arranged on the top of the lower screw rod 5, a main bevel gear 6 meshing with the secondary bevel gear 503 is arranged on the electric push rod 402, the support plate 502 is movably against the bottom wall of the forging table 3, and an elastic telescopic rod 102 is arranged between the forging table 3 and the output shaft of the rotating motor 101.

[0024] Furthermore, a movable gear 7 is fixed on the lower screw rod 5, and a rack frame 701 meshing with the movable gear 7 is slidably connected to the frame 1. An elastic telescopic tube 702 is fixed on one side of the rack frame 701, and an auxiliary support plate 703 is fixed on the end of the elastic telescopic tube 702 away from the rack frame 701. The forging table 3 is evenly provided with a plurality of slots 3021 that are plugged into the auxiliary support plate 703 in a circular shape.

[0025] Furthermore, the lifting mechanism also includes an upper screw rod 8 rotatably connected to the upper side of the frame 1, an upper sleeve 801 threadedly connected to the upper screw rod 8, a connecting plate 802 fixedly connected to the upper sleeve 801, and a connecting seat 803 arranged on the lower side of the connecting plate 802. The electric push rod 402 is rotatably connected to the connecting seat 803. A secondary bevel gear 804 meshing with the main bevel gear 6 is provided at the bottom of the upper screw rod 8. A slide groove 10 for sliding of the motor seat 4 is provided on the frame 1.

[0026] Furthermore, the upper screw rod 8 and the lower screw rod 5 have the same structure, both including a screw rod body 9 and a sliding rod 901 slidably connected to the screw rod body 9, the sliding rod 901 is rotatably connected to the connecting seat 803, a guide groove 902 is opened on the inner wall of the screw rod body 9, and a guide strip 9011 is fixed on the outer wall of the sliding rod 901 to slide in the guide groove 902.

[0027] Specifically, the output shaft of the flip motor 401 drives the clamped forging to flip through the electric push rod 402, and when the electric push rod 402 rotates, it drives the main bevel gear 6 to mesh with the auxiliary bevel gear 1 503 and the auxiliary bevel gear 2 804 for transmission (it should be noted that in actual applications, the main bevel gear 6 and the auxiliary bevel gear 1 503 and the auxiliary bevel gear 2 804 should have a large transmission ratio, so that the main bevel gear 6 rotates half a circle, and the auxiliary bevel gear 1 503 and the auxiliary bevel gear 2 804 can rotate multiple circles, so as to increase the axial movement distance of the upper sleeve 801 and the lower sleeve 501); When the main bevel gear 6 is meshed with the secondary bevel gear 2 804 for transmission, the upper sleeve 801 moves upward along the axial direction of the rotating upper screw rod 8, and the upper sleeve 801 drives the clamped forging to move upward through the connecting plate 802 and the connecting seat 803, leaving a turning space for the forging to turn over; when the main bevel gear 6 is meshed with the secondary bevel gear 1 503 for transmission, the lower sleeve 501 moves downward along the axial direction of the rotating lower screw rod 5, and the lower sleeve 501 no longer supports the lower side of the forging table 3, and when the lower screw rod 5 rotates, the movable gear 7 is meshed with the rack rack 701 for transmission, and the rack rack 701 drives the auxiliary support plate 703 to move toward the outside of the slot 3021 through the elastic telescopic tube 702. After the auxiliary support plate 703 moves out of the slot 3021, the forging table 3 is pulled back and moved downward by the stretched elastic telescopic rod 102 and its own gravity, further leaving a turning space for the forging to turn over; After the flip motor 401 drives the forging to flip to the other side, the electric push rod 402 is controlled to shrink, so that the clamping plate 403 no longer clamps the forging, and the forging falls on the forging table 3 supported by the support plate 502 at this time. Then, the output shaft of the flip motor 401 is controlled to rotate in the opposite direction, and the hydraulic device 201 controls the pressing head 2 to move downward, so that the pressing head 2 performs a forging operation on the forging on the reset forging table 3. By providing an auxiliary support plate 703 to support the forging table 3 again on the basis of the support plate 502 supporting the forging table 3, the stability of the support for the forging table 3 is improved, and it is avoided that when the ram 2 presses down on the forging on the forging table 3 for forging, the forging table 3 is only supported by the support plate 502 and is subjected to excessive downward pressure from the ram 2, which will affect the subsequent transmission of the lower screw 5 and the lower sleeve 501, thereby ensuring the continuous and stable progress of the forging process.

[0028] Example 4: Reference Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 A hollow variable-section oil cylinder connected to a large forging forging device. On the basis of Example 3, further, a driving gear 11 is provided on the elastic telescopic rod 102, and a driven gear 111 meshingly connected to the driving gear 11 is rotatably provided on the frame 1, and a reel 112 is provided on the driven gear 111, and a pull rope 113 is wound around the reel 112, and the end of the pull rope 113 away from the reel 112 passes through the frame 1 and is connected to the auxiliary support plate 703.

[0029] Furthermore, a plurality of vacancies 12 are formed on the circumference of the driving gear 11 , and the driving gear 11 is intermittently meshed with the driven gear 111 .

[0030] Furthermore, the forging table 3 includes an active table 301 fixedly connected to the elastic telescopic rod 102 and a placement table 302 rotatably connected to the outside of the active table 301, a movable block 3011 is fixedly provided on the outside of the active table 301, and an annular groove 3022 for the movable block 3011 to slide is opened on the placement table 302, and an annular spring 3023 is arranged between the annular groove 3022 and the movable block 3011.

[0031] Specifically, when it is necessary to forge the clamped surface of the forging, the rotating motor 101 is controlled to run, and the output shaft of the rotating motor 101 drives the active platform 301 to rotate. At this time, the placement platform 302 outside the active platform 301 is limited by the auxiliary support plate 703, so that the active platform 301 rotates relative to the placement platform 302. As the elastic telescopic rod 102 rotates, the active gear 11 and the driven gear 111 are meshed and transmitted, and the driven gear 111 drives the reel 112 to reel the pull rope 113. The pull rope 113 pulls the auxiliary support plate 703 out of the slot 3021, and the elastic telescopic tube 702 is The auxiliary support plate 703 is compressed to release the restriction on the placement table 302. Then the driving gear 11 is no longer meshed with the driven gear 111. The placement table 302 rotates and resets under the action of the annular spring 3023, so that the placement table 302 drives the forging on the upper side to rotate. After the placement table 302 rotates and resets, the slot 3021 on the placement table 302 is aligned with the auxiliary support plate 703. The elastic force of the compressed elastic telescopic tube 702 pushes the auxiliary support plate 703 to move, so that the auxiliary support plate 703 is inserted into the slot 3021 to support the forging table 3, preparing for the subsequent forging of the forging by the press head 2.

[0032] The present invention also discloses a hollow variable cross-section oil cylinder connected large forging production process, by using a hollow variable cross-section oil cylinder connected large forging forging equipment, including the following steps: S1: The forging is placed on the forging table 3, and the ram 2 is controlled to move downward by the hydraulic device 201. The ram 2 performs multiple reciprocating forgings on the forging table 3. When it is necessary to forge other surfaces of the forging, the ram 2 is moved upward and reset; S2: Control the electric push rod 402 to drive the clamping plate 403 to move toward the forging, so that the clamping plates 403 on both sides of the frame 1 clamp the forging; S3: Control the turning motor 401 to run. The output shaft of the turning motor 401 drives the clamped forging to turn through the electric push rod 402. When the electric push rod 402 rotates, it drives the main bevel gear 6 to mesh with the auxiliary bevel gear 1 503 and the auxiliary bevel gear 2 804; When the main bevel gear 6 and the secondary bevel gear 2 804 are meshed and driven, the upper sleeve 801 moves upward along the rotating upper screw 8 axial direction, and the upper sleeve 801 drives the clamped forging to move upward through the connecting plate 802 and the connecting seat 803, leaving a turning space for the forging to turn over; When the main bevel gear 6 and the secondary bevel gear 1 503 are meshed for transmission, the lower sleeve 501 moves downward along the rotating lower screw rod 5 axially, and the lower sleeve 501 no longer supports the lower side of the forging table 3, and when the lower screw rod 5 rotates, the movable gear 7 and the rack rack 701 are meshed for transmission, and the rack rack 701 drives the auxiliary support plate 703 to move to the outside of the slot 3021 through the elastic telescopic tube 702. After the auxiliary support plate 703 moves out of the slot 3021, the forging table 3 is pulled back and moved downward by the stretched elastic telescopic rod 102 and its own gravity, further leaving a turning space for the turning of the forging; S4: After the flip motor 401 drives the forging to flip to the other side, the electric push rod 402 is controlled to shrink, so that the clamping plate 403 no longer clamps the forging, and the forging falls on the forging table 3 supported by the support plate 502 at this time. Then, the output shaft of the flip motor 401 is controlled to rotate in the opposite direction, and the hydraulic device 201 controls the pressing head 2 to move downward, so that the pressing head 2 performs a forging operation on the forging on the reset forging table 3; S5: When it is necessary to forge the clamped surface of the forging, the rotating motor 101 is controlled to run, and the output shaft of the rotating motor 101 drives the active platform 301 to rotate. At this time, the placement platform 302 outside the active platform 301 is limited by the auxiliary support plate 703, so that the active platform 301 rotates relative to the placement platform 302. As the elastic telescopic rod 102 rotates, the active gear 11 and the driven gear 111 are meshed and transmitted, and the driven gear 111 drives the reel 112 to reel the pull rope 113. The pull rope 113 pulls the auxiliary support plate 703 out of the slot 3021, and the restriction of the auxiliary support plate 703 on the placement platform 302 is released. The placement platform 302 rotates and resets under the action of the annular spring 3023, so that the placement platform 302 drives the forging on the upper side to rotate; S6: Then repeat steps S2-S3 to complete the forging work on multiple surfaces of the forging.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hollow variable cross-section cylinder connected large forging forging equipment, comprising a frame (1), characterized in that: Also includes: A pressure head (2), the pressure head (2) being arranged on the upper side of the frame (1), and the frame (1) being provided with a hydraulic device (201) for driving the pressure head (2) to rise and fall; A forging table (3), the forging table (3) being arranged on a frame (1) and placed on the lower side of the pressing head (2), the frame (1) being provided with a rotating motor (101) for driving the forging table (3) to rotate; A lifting mechanism, the lifting mechanism being arranged on a side of the frame (1) and being used to drive the forging table (3) to move up and down in a vertical direction along the frame (1); Wherein, the lifting mechanism is provided with a turning mechanism for driving the forging to turn over.

2. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 1, characterized in that: The flipping mechanism comprises a motor seat (4) arranged on the side of the frame (1), a flipping motor (401) arranged in the motor seat (4), an electric push rod (402) connected to the output shaft of the flipping motor (401), and a clamping plate (403) arranged at the end of the electric push rod (402), wherein the clamping plate (403) movably abuts against a forging placed on the forging table (3).

3. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 2, characterized in that: The lifting mechanism comprises a lower screw rod (5) rotatably connected to the lower side of the frame (1), a lower sleeve (501) threadedly connected to the lower screw rod (5), and a support plate (502) fixedly connected to the lower sleeve (501); a secondary bevel gear 1 (503) is arranged on the top of the lower screw rod (5); a main bevel gear (6) meshing with the secondary bevel gear 1 (503) is arranged on the electric push rod (402); the support plate (502) movably contacts the bottom wall of the forging table (3); and an elastic telescopic rod (102) is arranged between the forging table (3) and the output shaft of the rotating motor (101).

4. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 3, characterized in that: A movable gear (7) is fixedly provided on the lower screw rod (5); a rack frame (701) meshingly connected with the movable gear (7) is slidably connected to the frame (1); an elastic telescopic tube (702) is fixedly provided on one side of the rack frame (701); an auxiliary support plate (703) is fixedly provided on one end of the elastic telescopic tube (702) away from the rack frame (701); and a plurality of slots (3021) for plugging into the auxiliary support plates (703) are evenly arranged on the circumference of the forging table (3).

5. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 4, characterized in that: The lifting mechanism further comprises an upper screw rod (8) rotatably connected to the upper side of the frame (1), an upper sleeve (801) threadedly connected to the upper screw rod (8), a connecting plate (802) fixedly connected to the upper sleeve (801), and a connecting seat (803) arranged at the lower side of the connecting plate (802); the electric push rod (402) is rotatably connected to the connecting seat (803); a secondary bevel gear (804) meshing with the main bevel gear (6) is arranged at the bottom of the upper screw rod (8); and a slide groove (10) for the motor seat (4) to slide is provided on the frame (1).

6. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 5, characterized in that: The upper screw rod (8) and the lower screw rod (5) have the same structure, both comprising a screw rod body (9) and a slide rod (901) slidably connected in the screw rod body (9), the slide rod (901) being rotatably connected to the connecting seat (803), the inner wall of the screw rod body (9) being provided with a guide groove (902), and the outer wall of the slide rod (901) being fixedly provided with a guide strip (9011) slidably in the guide groove (902).

7. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 6, characterized in that: The elastic telescopic rod (102) is provided with a driving gear (11), the frame (1) is rotatably provided with a driven gear (111) meshingly connected with the driving gear (11), the driven gear (111) is provided with a reel (112), a pull rope (113) is wound around the reel (112), and one end of the pull rope (113) away from the reel (112) passes through the frame (1) and is connected to the auxiliary support plate (703).

8. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 7, characterized in that: The driving gear (11) is provided with a plurality of vacant portions (12) in the circumferential direction, and the driving gear (11) is intermittently meshed with the driven gear (111).

9. A hollow variable cross-section oil cylinder connected to a large forging forging equipment according to claim 8, characterized in that: The forging table (3) comprises an active table (301) fixedly connected to an elastic telescopic rod (102) and a placement table (302) rotatably connected to the outside of the active table (301); a movable block (3011) is fixedly arranged on the outside of the active table (301); an annular groove (3022) for the movable block (3011) to slide is formed on the placement table (302); and an annular spring (3023) is arranged between the annular groove (3022) and the movable block (3011).

10. A production process for large forgings connected by hollow variable cross-section oil cylinders, by applying the large forging equipment for hollow variable cross-section oil cylinders connected by claim 9, characterized in that: The following steps are involved: S1: The forging is placed on a forging table (3), and the pressure head (2) is controlled to move downward by a hydraulic device (201). The pressure head (2) performs a plurality of reciprocating forgings on the forging table (3). When it is necessary to forge other surfaces of the forging, the pressure head (2) is moved upward and reset; S2: Controlling the electric push rod (402) to drive the clamping plate (403) to move toward the forging, so that the clamping plates (403) on both sides of the frame (1) clamp the forging; S3: Control the turning motor (401) to operate, the output shaft of the turning motor (401) drives the clamped forging to turn through the electric push rod (402), and when the electric push rod (402) rotates, it drives the main bevel gear (6) to mesh with the auxiliary bevel gear 1 (503) and the auxiliary bevel gear 2 (804); When the main bevel gear (6) and the secondary bevel gear (804) are meshed and driven, the upper sleeve (801) moves upward along the axial direction of the rotating upper screw (8), and the upper sleeve (801) drives the clamped forging to move upward through the connecting plate (802) and the connecting seat (803), leaving a turning space for the forging to turn over; When the main bevel gear (6) and the auxiliary bevel gear (503) are meshed and transmitted, the lower sleeve (501) moves downward along the rotating lower screw rod (5), and the lower sleeve (501) no longer supports the lower side of the forging table (3). When the lower screw rod (5) rotates, the movable gear (7) and the rack rack (701) are meshed and transmitted, and the rack rack (701) drives the auxiliary support plate (703) to move toward the outside of the slot (3021) through the elastic telescopic tube (702). After the auxiliary support plate (703) moves out of the slot (3021), the forging table (3) is reset and moved downward under the pull of the stretched elastic telescopic rod (102) and the action of its own gravity, thereby further leaving a turning space for the forging to turn over. S4: After the flipping motor (401) drives the forging to flip to the other side, the electric push rod (402) is controlled to shrink so that the clamping plate (403) no longer clamps the forging, and the forging falls onto the forging table (3) supported by the support plate (502). Then, the output shaft of the flipping motor (401) is controlled to rotate in the opposite direction, and the hydraulic device (201) controls the pressing head (2) to move downward, so that the pressing head (2) performs a forging operation on the forging on the reset forging table (3); S5: When it is necessary to forge the clamped surface of the forging, the rotating motor (101) is controlled to operate, and the output shaft of the rotating motor (101) drives the active platform (301) to rotate. At this time, the placement platform (302) outside the active platform (301) is limited by the auxiliary support plate (703), so that the active platform (301) rotates relative to the placement platform (302). As the elastic telescopic rod (102) rotates, the active gear (11) and the driven gear (111) are meshed and transmitted, and the driven gear (111) drives the reel (112) to reel the pull rope (113). The pull rope (113) pulls the auxiliary support plate (703) out of the slot (3021), thereby releasing the restriction of the auxiliary support plate (703) on the placement platform (302). The placement platform (302) rotates and resets under the action of the annular spring (3023), so that the placement platform (302) drives the forging on the upper side to rotate; S6: Then repeat steps S2-S3 to complete the forging work on multiple surfaces of the forging.

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