A hot extrusion forming device and method for large cylindrical forgings

Abstract

The present invention discloses a hot extrusion forming device and method for large cylindrical forgings, belonging to the technical field of forging forming. A hot extrusion forming device for large cylindrical forgings includes a frame, and also includes: a die seat part, the die seat part includes a lower die seat and an upper die seat, the lower die seat is fixedly arranged on the frame through a support rod, a hydraulic device for driving the lifting of the upper die seat is arranged on the frame, and the upper die seat is placed on the upper side of the lower die seat and is movably abutted against the lower die seat; a conveying part, the conveying part includes a first conveyor and a second conveyor, a support seat is arranged between the first conveyor and the lower die seat, and the second conveyor is arranged on the side of the lower die seat away from the first conveyor; The present invention facilitates the automatic feeding of forging blanks and the automatic discharging of the cylindrical forgings after extrusion forming, has a high degree of automation, improves the forging extrusion forming efficiency, and does not need to use an ejection mechanism to eject the forging blank upward, which facilitates the rapid demolding of the forging blank and ensures the extrusion forming quality of the forging blank.

Description

Technical Field

[0001] The present invention relates to the technical field of forging forming, and particularly relates to a hot extrusion forming device and method for large cylindrical forgings. Background Art

[0002] Forgings refer to workpieces or blanks obtained by forging deformation of metal billets. The processing and forming of forgings are classified into cold forging, warm forging, and hot forging according to the temperature of the billet during processing. Cold forging is generally processed at room temperature, and hot forging is processed at a temperature higher than the recrystallization temperature of the metal billet. As large forgings, large-diameter refined steel forgings need to be stamped and formed by hot forging.

[0003] Existing hot extrusion forming equipment does not have the function of automatic demoulding. Workers need to use tools to manually remove the forgings from the mold, which is time-consuming and laborious, affecting the processing efficiency. The degree of automation is low, and manual feeding and discharging are still required, increasing the labor intensity. Moreover, since the forgings are tightly filled in the mold, it is difficult for the forgings to be demoulded. The forgings may still be in a high-temperature state or have a certain elasticity. When using the ejection mechanism to eject the forgings, due to the tight filling of the forgings in the mold, a certain part of the bottom of the forgings may be deformed due to the large thrust, reducing the processing production efficiency and processing quality of the forgings. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and a hot extrusion forming device and method for large cylindrical forgings are proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A hot extrusion forming device for large cylindrical forgings, including a frame, and further including:

[0007] A die seat part, the die seat part includes a lower die seat and an upper die seat. The lower die seat is fixedly arranged on the frame through a support rod. A hydraulic device for driving the upper die seat to lift is arranged on the frame. The upper die seat is placed on the upper side of the lower die seat and is movably abutted against the lower die seat;

[0008] A conveying part, the conveying part includes a first conveyor and a second conveyor. A support seat is arranged between the first conveyor and the lower die seat. The second conveyor is arranged on the side of the lower die seat away from the first conveyor;

[0009] A limiting component, the limiting component is arranged on the support seat and is used for restricting the movement of the forging blank on the support seat;

[0010] A pushing component, the pushing component is arranged outside the first conveyor and is used for pushing the forging blank on the first conveyor;

[0011] Among them, a positioning component for positioning the forging blank in the lower die base is arranged on the lower die base.

[0012] Preferably, the pushing component includes an electric push rod fixed on the first conveyor, a push plate connected to the movable end of the electric push rod, a cross plate fixedly connected to the push plate, a connecting plate arranged on the cross plate, a first elastic telescopic rod arranged on the connecting plate, a first push rod fixedly connected to the first elastic telescopic rod, and a second push rod arranged on the first push rod. A first force-receiving inclined surface is formed on one side of the first push rod away from the lower die base.

[0013] Preferably, the limiting component includes a first stopper slidably connected in the support seat and a second elastic telescopic rod arranged between the first stopper and the bottom of the support seat. The first stopper is in movable contact with the cross plate, and a second force-receiving inclined surface is formed on one side of the first stopper close to the lower die base.

[0014] Preferably, the limiting component further includes a second stopper slidably connected in the support seat and a third elastic telescopic rod arranged between the second stopper and the bottom of the support seat. A pull rope is arranged between the first stopper and the second stopper.

[0015] Preferably, the lower die base includes a main seat body fixedly connected to the frame through a support rod and two sub-seat bodies arranged on both sides of the main seat body.

[0016] Preferably, the positioning component includes a first lead screw rotatably connected to the main seat body, a lower sleeve threadedly connected to the first lead screw, a moving frame fixedly connected to the lower sleeve, and a positioning rod arranged on the moving frame.

[0017] Preferably, a driven gear is fixedly arranged on the first lead screw, and a rack plate meshingly connected to the driven gear is arranged on the push plate.

[0018] Preferably, a chute is formed on the main seat body, a sliding plate in movable contact with the positioning rod is slidably connected in the chute, an elastic element is arranged between the sliding plate and the inner wall of the chute, and a squeezing inclined surface is formed on the sliding plate and the positioning rod in a matching manner.

[0019] Preferably, the top of the first lead screw is connected to a second lead screw, an upper sleeve is threadedly connected to the second lead screw, an elastic telescopic plate is fixedly arranged on the upper sleeve, one end of the elastic telescopic plate away from the upper sleeve is connected to the sub-seat body, a force-receiving block is fixedly arranged at the bottom of the sub-seat body, and an inclined surface groove matching the force-receiving block is formed at the top of the main seat body.

[0020] The present invention also discloses a hot extrusion forming method for large cylindrical forgings. By using the above-mentioned hot extrusion forming device for large cylindrical forgings for processing, the method includes the following steps:

[0021] S1: The hydraulic device controls the upper die seat to move downward, and the upper die seat cooperates with the lower die seat to extrude the forging blank placed in the lower die seat, and then controls the upper die seat to move upward and reset;

[0022] S2: Control the operation of the electric push rod, the movable end of the electric push rod pushes the push plate to move, the push plate drives the first push rod and the second push rod to move toward the lower die seat, the push plate no longer presses the first stopper after moving, the first stopper moves up again and blocks the displacement of the subsequent forging blank, the first conveyor conveys a plurality of cylindrical forging blanks to the support seat, and the conveyed forging blanks are intercepted by the stopper at the push position of the support seat;

[0023] S3: When the push plate moves, it drives the rack plate to mesh with the driven gear on the first screw rod, the first screw rod drives the second screw rod to rotate, the upper sleeve moves upward along the axial direction of the second screw rod, the lower sleeve moves upward along the axial direction of the first screw rod, and when the upper sleeve drives the sub-seat body to move upward through the elastic expansion plate, the force block no longer abuts against the inner wall of the inclined groove, and the sub-seat body resets and moves back under the tension of the stretched elastic expansion plate, and the two sub-seat bodies on the upper side of the main seat body separate from each other, so that the sub-seat body no longer fits with the extruded cylindrical forging in the lower die seat;

[0024] S4: As the first push rod and the second push rod continue to move laterally, the second push rod first moves to the upper side of the main seat body and pushes the cylindrical forging on the main seat body, and then the first push rod pushes the forging blank on the support seat onto the main seat body;

[0025] S5: As the lower sleeve continues to move upward, the moving frame drives the positioning rod to push the slide plate, and the slide plate avoids the upward movement of the positioning rod, so that the positioning rod moves out of the main seat body until the forging blank pushed by the first push rod abuts against the positioning rod. At this time, the second push rod pushes the extruded cylindrical forging onto the second conveyor;

[0026] S6: Control the electric push rod to drive the push plate to move back. When the first push rod moves back, the first force-bearing inclined surface abuts against the side of the cylindrical forging blank, and the first elastic telescopic rod is stretched. Then the first push rod passes over the first forging blank on the support seat and is placed in front of the second forging blank. When the cross plate moves back, it squeezes the first stopper, and the first stopper moves downward under force. The first stopper no longer limits the first cylindrical forging blank on the support seat, and when the first stopper moves downward, the second stopper is pulled by the pull rope, so that the second stopper moves upward under force to block the second forging blank, thereby preventing the second forging blank from being pushed in the subsequent forging blank transportation of the first conveyor;

[0027] S7: Repeat steps S1-S6 to achieve continuous extrusion molding of multiple forging blanks.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The hot extrusion forming device and method for large-sized cylindrical forgings facilitate the automatic loading of forging blanks and the automatic unloading of the formed cylindrical forgings through the cooperation of the pushing component and the positioning component, with high automation and improved forging extrusion forming efficiency.

[0030] 2. The hot extrusion forming device and method for large-sized cylindrical forgings drive the rack plate to engage with the driven gear on the first lead screw when the push plate moves. The first lead screw drives the second lead screw to rotate, causing the upper sleeve to move upward along the second lead screw axis and the lower sleeve to move upward along the first lead screw axis. When the upper sleeve drives the sub-seat body to move upward through the elastic telescopic plate, the force block no longer abuts against the inner wall of the inclined groove. The sub-seat body returns and moves back under the tension of the stretched elastic telescopic plate, and the two sub-seat bodies on the upper side of the main seat body separate from each other, so that the sub-seat body no longer fits with the cylindrical forging being extruded and formed in the lower die seat. There is no need to use an ejection mechanism to eject the forging blank upward, which facilitates the rapid demolding of the forging blank and ensures the extrusion forming quality of the forging blank.

[0031] 3. The hot extrusion forming device and method for large-sized cylindrical forgings squeeze the first stop block when the cross plate moves back. The first stop block moves downward under the force, and the first stop block no longer limits the first cylindrical forging blank on the support seat. When the first stop block moves downward, it pulls the second stop block through a rope, causing the second stop block to move upward and block the second forging blank, preventing the second forging blank and other forging blanks from being pushed during the subsequent conveying of forging blanks by the first conveyor, and ensuring the orderly progress of the continuous extrusion forming work of forging blanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the schematic diagram of the overall structure of the present invention Figure 1 ;

[0033] Figure 2 is the Figure 1 schematic diagram of the partial enlarged structure of part A in the present invention;

[0034] Figure 3 is the Figure 1 schematic diagram of the partial enlarged structure of part B in the present invention;

[0035] Figure 4 is the schematic diagram of the overall structure of the present invention Figure 2 ;

[0036] Figure 5 is the Figure 4 schematic diagram of the partial enlarged structure of part C in the present invention;

[0037] Figure 6 is the schematic cross-sectional structure diagram of the die seat part of the present invention;

[0038] Figure 7 is the Figure 6Schematic diagram of the partial enlarged structure of Part D;

[0039] Figure 8 Schematic diagram of the structure of the pushing component of the present invention;

[0040] Figure 9 Schematic cross-sectional structure diagram of the first stop block and the second stop block of the present invention;

[0041] Figure 10 Schematic diagram of the external structure of the first lead screw of the present invention;

[0042] Figure 11 Schematic diagram of the structure when the sub-seat body moves upward in the present invention.

[0043] In the figure: 1, frame; 101, hydraulic equipment; 2, lower die base; 201, main seat body; 2011, inclined groove; 202, sub-seat body; 2021, force-receiving block; 3, upper die base; 4, first conveyor; 5, second conveyor; 6, support seat; 7, forging blank; 8, electric push rod; 801, push plate; 802, cross plate; 803, connecting plate; 804, first elastic telescopic rod; 805, first push rod; 806, second push rod; 9, first stop block; 901, second elastic telescopic rod; 10, second stop block; 1001, third elastic telescopic rod; 11, pulling rope; 12, first lead screw; 121, lower sleeve; 122, moving frame; 123, positioning rod; 13, chute; 131, sliding plate; 132, elastic element; 14, second lead screw; 141, upper sleeve; 142, elastic telescopic plate; 15, driven gear; 151, rack plate. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying 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 should not be construed as a limitation to the present invention.

[0046] Embodiment 1: Refer to Figure 1 , Figure 4 , Figure 6 and Figure 11 , a hot extrusion forming device for large cylindrical forgings, including a frame 1, and further including:

[0047] The die holder part, the die holder part includes a lower die holder 2 and an upper die holder 3. The lower die holder 2 is fixedly arranged on the frame 1 through a support rod. A hydraulic device 101 for driving the upper die holder 3 to lift and lower is arranged on the frame 1. The upper die holder 3 is placed on the upper side of the lower die holder 2 and is movably abutted against the lower die holder 2;

[0048] The conveying part, the conveying part includes a first conveyor 4 and a second conveyor 5. A support seat 6 is arranged between the first conveyor 4 and the lower die holder 2. The second conveyor 5 is arranged on the side of the lower die holder 2 away from the first conveyor 4;

[0049] The limiting component, the limiting component is arranged on the support seat 6 and is used for limiting the movement of the forging blank 7 on the support seat 6;

[0050] The pushing component, the pushing component is arranged outside the first conveyor 4 and is used for pushing the forging blank 7 on the first conveyor 4;

[0051] Among them, a positioning component for positioning the forging blank 7 in the lower die holder 2 is arranged on the lower die holder 2.

[0052] Furthermore, the lower die holder 2 includes a main seat body 201 fixedly connected to the frame 1 through a support rod and two sub-seat bodies 202 arranged on both sides of the main seat body 201.

[0053] Specifically, the hydraulic device 101 controls the lower movement of the upper die holder 3. The upper die holder 3 cooperates with the lower die holder 2 to extrude and form the forging blank 7 placed in the lower die holder 2. Subsequently, it controls the upper die holder 3 to move up and reset. The first conveyor 4 conveys a plurality of cylindrical forging blanks 7 to the support seat 6. The conveyed forging blanks 7 are intercepted by a stop block at the pushing position of the support seat 6. Control the pushing component to work, so that the pushing component pushes the forging blank 7 on the support seat 6 towards the lower die holder 2. When the pushing component works, the sub-seat body 202 of the lower die holder 2 moves up and separates from the main seat body 201, which is convenient for the pushing component to push out the tubular forging formed in the lower die holder 2 from the side and send the forging blank 7 on the support seat 6 in, which is convenient for realizing the automatic feeding of the forging blank 7 and the automatic discharging of the tubular forging after extrusion forming. The automation degree is high, and the forging extrusion forming efficiency is improved.

[0054] Embodiment 2: Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 8, A hot extrusion forming device for large cylindrical forgings. On the basis of Embodiment 1, the pushing component includes an electric push rod 8 fixedly arranged on the first conveyor 4, a push plate 801 connected to the movable end of the electric push rod 8, a cross plate 802 fixedly connected to the push plate 801, a connecting plate 803 arranged on the cross plate 802, a first elastic telescopic rod 804 arranged on the connecting plate 803, a first push rod 805 fixedly connected to the first elastic telescopic rod 804, and a second push rod 806 arranged on the first push rod 805. A first force-receiving inclined surface is formed on the side of the first push rod 805 away from the lower die base 2.

[0055] Specifically, when the pushing component works, control the electric push rod 8 to operate. The movable end of the electric push rod 8 pushes the push plate 801 to move. The push plate 801 drives the first push rod 805 and the second push rod 806 to move towards the lower die base 2. The first push rod 805 pushes the forging blank 7 on the support seat 6, and the second push rod 806 pushes the cylindrical forging formed on the upper side of the lower die base 2. When the electric push rod 8 drives the push plate 801 to move back, the first force-receiving inclined surface of the first push rod 805 abuts against the side surface of the cylindrical forging blank 7. The first elastic telescopic rod 804 is stretched until the first push rod 805 passes over the first forging blank 7 on the support seat 6 and is placed in front of the second forging blank 7. At this time, the electric push rod 8 and the push plate 801 move back to the initial pushing position.

[0056] Embodiment 3: Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 9 , A hot extrusion forming device for large cylindrical forgings. On the basis of Embodiment 2, the limiting component includes a first stop block 9 slidably connected in the support seat 6 and a second elastic telescopic rod 901 arranged between the first stop block 9 and the bottom of the support seat 6. The first stop block 9 is movably abutted against the cross plate 802, and a second force-receiving inclined surface is formed on the side of the first stop block 9 close to the lower die base 2.

[0057] Furthermore, the limiting component further includes a second stop block 10 slidably connected in the support seat 6 and a third elastic telescopic rod 1001 arranged between the second stop block 10 and the bottom of the support seat 6. A pull rope 11 is arranged between the first stop block 9 and the second stop block 10.

[0058] Specifically, control the operation of the electric push rod 8. The movable end of the electric push rod 8 pushes the push plate 801 to move. The push plate 801 drives the first push rod 805 and the second push rod 806 to move towards the lower die base 2. After the push plate 801 moves, it no longer presses against the first stop block 9. The first stop block 9 moves up again and blocks the subsequent displacement of the forging blank 7. The first conveyor 4 conveys a plurality of cylindrical forging blanks 7 towards the support seat 6. The conveyed forging blanks 7 are intercepted by the stop block at the pushing position of the support seat 6. After the pushing work is completed, the electric push rod 8 drives the push plate 801 to move back. When the first push rod 805 moves back, the first force-receiving inclined surface abuts against the side surface of the cylindrical forging blank 7, and the first elastic telescopic rod 804 is stretched. Subsequently, the first push rod 805 passes over the first forging blank 7 on the support seat 6 and is placed in front of the second forging blank 7. When the cross plate 802 moves back, it squeezes the first stop block 9. The first stop block 9 is forced to move down, and the first stop block 9 no longer limits the first tubular forging blank 7 on the support seat 6, so as not to affect the subsequent pushing work of the pushing component on the first forging blank 7. When the first stop block 9 moves down, it pulls the second stop block 10 through the pull rope 11, so that the second stop block 10 is forced to move up and block the second forging blank 7, preventing the second forging blank 7 from being pushed during the subsequent conveying of the forging blanks 7 by the first conveyor 4 due to the first forging blank 7 not being blocked, and ensuring the orderly progress of the continuous extrusion forming work of the forging blanks 7.

[0059] Example 4: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 10 and Figure 11 , a hot extrusion forming device for large tubular forgings. On the basis of Example 3, the positioning component includes a first lead screw 12 rotatably connected to the main seat body 201, a lower sleeve 121 threadedly connected to the first lead screw 12, a moving frame 122 fixedly connected to the lower sleeve 121, and a positioning rod 123 provided on the moving frame 122.

[0060] Furthermore, a driven gear 15 is fixedly provided on the first lead screw 12, and a rack plate 151 meshingly connected to the driven gear 15 is provided on the push plate 801.

[0061] Furthermore, a chute 13 is opened on the main seat body 201. A slide plate 131 that is movably abutted against the positioning rod 123 is slidably connected in the chute 13. An elastic element 132 is provided between the slide plate 131 and the inner wall of the chute 13. The elastic element 132 is set as a spring. The slide plate 131 and the positioning rod 123 are provided with cooperating extrusion inclined surfaces.

[0062] Further, the top of the first lead screw 12 is connected to a second lead screw 14. A upper sleeve 141 is threadedly connected to the second lead screw 14. An elastic telescopic plate 142 is fixedly provided on the upper sleeve 141. One end of the elastic telescopic plate 142 away from the upper sleeve 141 is connected to the sub-seat body 202. A stress block 2021 is fixedly provided at the bottom of the sub-seat body 202. An inclined surface groove 2011 matching the stress block 2021 is formed at the top of the main seat body 201.

[0063] Specifically, when the pushing component works, the push plate 801 moves downward towards the lower die base 2. When the push plate 801 moves, it drives the rack plate 151 to engage and drive with the driven gear 15 on the first lead screw 12. The first lead screw 12 drives the second lead screw 14 to rotate. The upper sleeve 141 moves axially upward along the second lead screw 14, and the lower sleeve 121 moves axially upward along the first lead screw 12. When the upper sleeve 141 drives the sub-seat body 202 to move upward through the elastic telescopic plate 142, the stress block 2021 no longer abuts against the inner wall of the inclined surface groove 2011. The sub-seat body 202 moves back to its original position under the pulling force of the stretched elastic telescopic plate 142. The two sub-seat bodies 202 on the upper side of the main seat body 201 are separated from each other, so that the sub-seat body 202 no longer fits with the tubular forging being extruded and formed in the lower die base 2. With the continuous lateral movement of the first push rod 805 and the second push rod 806, the second push rod 806 first moves to the upper side of the main seat body 201 and pushes the tubular forging on the main seat body 201. Subsequently, the first push rod 805 pushes the forging blank 7 on the support seat 6 to the main seat body 201. With the continuous upward movement of the lower sleeve 121, the moving frame 122 drives the positioning rod 123 to push against the sliding plate 131. The sliding plate 131 avoids the upward movement of the positioning rod 123, so that the positioning rod 123 moves out of the main seat body 201 (it should be noted that the positioning rod 123 is set as an elastic telescopic rod body) until the forging blank 7 pushed by the first push rod 805 abuts against the positioning rod 123. At this time, the second push rod 806 pushes the extruded and formed tubular forging onto the second conveyor 5, realizing the automatic feeding of the forging blank 7 and the automatic discharging of the extruded and formed tubular forging. The degree of automation is high, the forging extrusion forming efficiency is improved, and there is no need to use an ejection mechanism to eject the forging blank 7 upward, which is convenient for the forging blank 7 to be quickly demolded and ensures the extrusion forming quality of the forging blank 7.

[0064] The present invention also discloses a hot extrusion forming method for large tubular forgings. By using the above-mentioned hot extrusion forming device for large tubular forgings for processing, it includes the following steps:

[0065] S1: The hydraulic device 101 controls the upper die base 3 to move downward. The upper die base 3 cooperates with the lower die base 2 to extrude and form the forging blank 7 placed in the lower die base 2, and then controls the upper die base 3 to move upward and reset;

[0066] S2: Control the electric push rod 8 to operate, the movable end of the electric push rod 8 pushes the push plate 801 to move, the push plate 801 drives the first push rod 805 and the second push rod 806 to move toward the lower die base 2, the push plate 801 no longer presses the first stopper 9 after moving, the first stopper 9 moves up again and blocks the displacement of the subsequent forging blank 7, the first conveyor 4 conveys a plurality of cylindrical forging blanks 7 to the support seat 6, and the conveyed forging blanks 7 are intercepted by the stopper at the push position of the support seat 6;

[0067] S3: When the push plate 801 moves, it drives the rack plate 151 to mesh with the driven gear 15 on the first screw rod 12, the first screw rod 12 drives the second screw rod 14 to rotate, the upper sleeve 141 moves upward along the axial direction of the second screw rod 14, and the lower sleeve 121 moves upward along the axial direction of the first screw rod 12. When the upper sleeve 141 drives the sub-seat body 202 to move upward through the elastic expansion plate 142, the force block 2021 no longer abuts against the inner wall of the inclined groove 2011, and the sub-seat body 202 is reset and moved back under the pulling force of the stretched elastic expansion plate 142, and the two sub-seat bodies 202 on the upper side of the main seat body 201 are separated from each other, so that the sub-seat body 202 is no longer in contact with the cylindrical forging extruded in the lower die seat 2;

[0068] S4: As the first push rod 805 and the second push rod 806 continue to move laterally, the second push rod 806 first moves to the upper side of the main seat body 201 and pushes the cylindrical forging on the main seat body 201, and then the first push rod 805 pushes the forging blank 7 on the support seat 6 onto the main seat body 201;

[0069] S5: As the lower sleeve 121 continues to move upward, the moving frame 122 drives the positioning rod 123 to push the slide plate 131, and the slide plate 131 avoids the upward movement of the positioning rod 123, so that the positioning rod 123 moves out of the main seat body 201, until the forging blank 7 pushed by the first push rod 805 abuts against the positioning rod 123, and at this time, the second push rod 806 pushes the extruded cylindrical forging onto the second conveyor 5;

[0070] S6: Control the electric push rod 8 to drive the push plate 801 to move back. When the first push rod 805 moves back, the first force-bearing inclined surface abuts against the side of the cylindrical forging blank 7, and the first elastic telescopic rod 804 is stretched. Then the first push rod 805 passes over the first forging blank 7 on the support seat 6 and is placed in front of the second forging blank 7. When the cross plate 802 moves back, it squeezes the first stopper 9, and the first stopper 9 moves downward under force. The first stopper 9 no longer limits the first cylindrical forging blank 7 on the support seat 6, and when the first stopper 9 moves downward, the second stopper 10 is pulled by the pull rope 11, so that the second stopper 10 is forced to move upward and then block the second forging blank 7, preventing the second forging blank 7 from being pushed during the subsequent forging blank 7 transportation of the first conveyor 4;

[0071] S7: Repeat steps S1 - S6 to achieve continuous extrusion forming of multiple forging blanks 7.

[0072] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A hot extrusion forming device for large cylindrical forgings, comprising a frame (1), characterized in that: Also includes: A die base portion, the die base portion comprising a lower die base (2) and an upper die base (3), the lower die base (2) being fixed to a frame (1) via a support rod, the frame (1) being provided with a hydraulic device (101) for driving the upper die base (3) to rise and fall, the upper die base (3) being placed on the upper side of the lower die base (2) and movably abutting against the lower die base (2); A conveying section, the conveying section comprising a first conveyor (4) and a second conveyor (5), a support base (6) being arranged between the first conveyor (4) and the lower die base (2), and the second conveyor (5) being arranged on a side of the lower die base (2) away from the first conveyor (4); A limiting assembly, the limiting assembly being arranged on the support seat (6) and used for limiting the movement of the forging blank (7) on the support seat (6); A pushing assembly, the pushing assembly being arranged outside the first conveyor (4) and being used for pushing the forging blank (7) on the first conveyor (4); Wherein, a positioning component for positioning the forging blank (7) within the lower die base (2) is provided on the lower die base (2); The pushing assembly comprises an electric push rod (8) fixedly mounted on the first conveyor (4), a push plate (801) connected to the movable end of the electric push rod (8), a transverse plate (802) fixedly connected to the push plate (801), a connecting plate (803) arranged on the transverse plate (802), a first elastic telescopic rod (804) arranged on the connecting plate (803), a first push rod (805) fixedly connected to the first elastic telescopic rod (804), and a second push rod (806) arranged on the first push rod (805), wherein a first force-bearing inclined surface is provided on a side of the first push rod (805) away from the lower die base (2); The limiting assembly comprises a first stopper (9) slidably connected in the support seat (6) and a second elastic telescopic rod (901) arranged between the first stopper (9) and the bottom of the support seat (6), the first stopper (9) and the cross plate (802) movably abut against each other, and a second force-bearing inclined surface is provided on a side of the first stopper (9) close to the lower die seat (2); The limiting assembly further comprises a second stopper (10) slidably connected to the support seat (6) and a third elastic telescopic rod (1001) arranged between the second stopper (10) and the bottom of the support seat (6), and a pull rope (11) is arranged between the first stopper (9) and the second stopper (10); The lower die base (2) comprises a main base body (201) fixedly connected to the frame (1) via a support rod, and two sub-base bodies (202) arranged on both sides of the main base body (201); The positioning assembly comprises a first screw rod (12) rotatably connected to the main seat body (201), a lower sleeve (121) threadedly connected to the first screw rod (12), a moving frame (122) fixedly connected to the lower sleeve (121), and a positioning rod (123) arranged on the moving frame (122); A driven gear (15) is fixedly provided on the first screw rod (12), and a rack plate (151) meshingly connected with the driven gear (15) is provided on the push plate (801); The main seat body (201) is provided with a slide groove (13), the slide groove (13) is slidably connected with a slide plate (131) that movably contacts the positioning rod (123), an elastic element (132) is provided between the slide plate (131) and the inner wall of the slide groove (13), and the slide plate (131) and the positioning rod (123) are provided with matching extrusion inclined surfaces; The top of the first screw rod (12) is connected to a second screw rod (14), an upper sleeve (141) is threadedly connected to the second screw rod (14), an elastic telescopic plate (142) is fixedly provided on the upper sleeve (141), an end of the elastic telescopic plate (142) away from the upper sleeve (141) is connected to the sub-seat body (202), a force-bearing block (2021) is fixedly provided at the bottom of the sub-seat body (202), and an inclined groove (2011) matching the force-bearing block (2021) is provided at the top of the main seat body (201).

2. A hot extrusion forming method for large cylindrical forgings, which is processed by applying the hot extrusion forming device for large cylindrical forgings according to claim 1, characterized in that: The following steps are involved: S1: The hydraulic device (101) controls the upper die seat (3) to move downward, and the upper die seat (3) cooperates with the lower die seat (2) to extrude the forging blank (7) placed in the lower die seat (2), and then controls the upper die seat (3) to move upward and reset; S2: Controlling the operation of the electric push rod (8), the movable end of the electric push rod (8) pushes the push plate (801) to move, the push plate (801) drives the first push rod (805) and the second push rod (806) to move in the direction of the lower die base (2), the push plate (801) no longer presses against the first stopper (9) after moving, the first stopper (9) moves up again and blocks the displacement of the subsequent forging blank (7), the first conveyor (4) conveys a plurality of cylindrical forging blanks (7) to the support base (6), and the conveyed forging blanks (7) are intercepted by the stopper at the push position of the support base (6); S3: When the push plate (801) moves, it drives the rack plate (151) to mesh with the driven gear (15) on the first screw rod (12), the first screw rod (12) drives the second screw rod (14) to rotate, the upper sleeve (141) moves upward along the axial direction of the second screw rod (14), the lower sleeve (121) moves upward along the axial direction of the first screw rod (12), and when the upper sleeve (141) drives the sub-seat body (202) to move upward through the elastic expansion plate (142), the force block (2021) no longer abuts against the inner wall of the inclined groove (211), the sub-seat body (202) resets and moves back under the tensile force of the stretched elastic expansion plate (142), and the two sub-seat bodies (202) on the upper side of the main seat body (201) separate from each other, so that the sub-seat body (202) no longer fits with the cylindrical forging extruded in the lower die seat (2); S4: As the first push rod (805) and the second push rod (806) continue to move laterally, the second push rod (806) first moves to the upper side of the main seat body (201) and pushes the cylindrical forging on the main seat body (201), and then the first push rod (805) pushes the forging blank (7) on the support seat (6) onto the main seat body (201); S5: As the lower sleeve (121) continues to move upward, the movable frame (122) drives the positioning rod (123) to push the slide plate (131), and the slide plate (131) avoids the upward movement of the positioning rod (123), so that the positioning rod (123) moves out of the main seat body (201) until the forging blank (7) pushed by the first push rod (805) abuts against the positioning rod (123), and at this time, the second push rod (806) pushes the extruded cylindrical forging onto the second conveyor (5); S6: Control the electric push rod (8) to drive the push plate (801) to move back. When the first push rod (805) moves back, the first force-bearing inclined surface abuts against the side of the cylindrical forging blank (7), and the first elastic telescopic rod (804) is stretched. Then, the first push rod (805) passes over the first forging blank (7) on the support seat (6) and is placed in front of the second forging blank (7). When the cross plate (802) moves back, it squeezes the first stopper (9), and the first stopper (9) moves downward under force. The first stopper (9) no longer limits the first cylindrical forging blank (7) on the support seat (6), and when the first stopper (9) moves downward, the second stopper (10) is pulled by the pull rope (11), so that the second stopper (10) is forced to move upward and then block the second forging blank (7), thereby preventing the second forging blank (7) from being pushed during the subsequent forging blank (7) transportation by the first conveyor (4); S7: Repeat steps S1-S6 to achieve continuous extrusion molding of multiple forging blanks (7).

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