Heavy duty die forging hydraulic press with center synchronized knockout device and method of use

Abstract

The present application relates to the technical field of hydraulic machine, especially to a heavy die forging hydraulic machine with a center synchronous ejection device and a use method thereof, comprising: a hydraulic frame body including an upper cross beam, a lower cross beam and a plurality of pull rods, the upper cross beam is connected with a cylinder slider, the cylinder slider includes an upper slider sliding on the pull rod, and a first connecting hole is formed in the bottom of the upper slider; an upper ejection mechanism is installed in the first connecting hole, and an upper ejector rod of the upper ejection mechanism can extend downward; a lower ejection mechanism is installed on the lower cross beam, and the lower ejection mechanism and the upper ejection mechanism are correspondingly arranged, and a lower ejector rod of the lower ejection mechanism can extend upward; a workbench mechanism is provided with a first through hole, and the lower ejector rod can pass through the first through hole; a die assembly includes an upper die and a lower die, the upper die is provided with a first die hole, the lower die is provided with a second die hole, the upper ejector rod can pass through the first die hole, and the lower ejector rod can pass through the second die hole. The present application improves the blank discharging efficiency and the workpiece taking efficiency.

Description

Technical Field

[0001] This invention relates to the field of hydraulic press technology, and in particular to a heavy-duty die forging hydraulic press with a central synchronous ejection device and its method of use. Background Technology

[0002] Heavy-duty forging hydraulic presses are widely used for precision forging of difficult-to-deform materials such as titanium alloys, high-temperature alloys, and powder alloys, playing a crucial role in aerospace, energy, and heavy industry. Traditional heavy-duty forging hydraulic presses rely on heavy-duty robotic arms for loading and unloading during production. However, due to the limited number of movable joints in the robotic arms, they cannot accurately position and place billets and finished parts vertically, hindering the automation and continuous production of heavy-duty forging hydraulic presses. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention provides a heavy-duty die forging hydraulic press with a central synchronous ejection device and its method of use, solving the technical problem of difficulty in the loading and positioning of billets and parts by robotic arms in the prior art, and improving the efficiency of billet loading and part loading.

[0004] This invention provides a heavy-duty die forging hydraulic press with a central synchronous ejection device, comprising:

[0005] A hydraulic frame includes an upper crossbeam, a lower crossbeam, and several tie rods connecting the upper crossbeam and the lower crossbeam. The upper crossbeam is connected to a cylinder-equipped slider, which includes an upper slider that slides on the tie rods. The bottom of the upper slider has a first connecting hole.

[0006] An upper ejection mechanism is installed in the first connecting hole, and the upper ejection mechanism has an upper ejection rod that can extend downward.

[0007] The lower ejection mechanism is installed on the lower crossbeam. The lower ejection mechanism and the upper ejection mechanism are correspondingly arranged. The lower ejection mechanism has a lower ejection rod that can extend upward.

[0008] A worktable mechanism is slidably mounted on the top of the lower crossbeam. The worktable mechanism has a first through hole through which the lower push rod can pass.

[0009] The mold assembly includes an upper mold mounted on the bottom of the upper slider and a lower mold mounted on the top of the worktable mechanism. The upper mold has a first mold hole, and the lower mold has a second mold hole. The upper ejector rod can pass through the first mold hole, and the lower ejector rod can pass through the second mold hole.

[0010] A further improvement of the present invention, a heavy-duty forging hydraulic press with a central synchronous ejection device, is that the upper ejection mechanism includes a first hydraulic cylinder mounted on the first connecting hole, the first hydraulic cylinder having a retractable first piston, and the upper ejector rod connected to the first piston.

[0011] A further improvement of the present invention, a heavy-duty die forging hydraulic press with a central synchronous ejection device, is that the lower crossbeam is provided with a second connecting hole;

[0012] The lower ejection mechanism includes a second hydraulic cylinder installed in the second connecting hole, the second hydraulic cylinder having a retractable second piston, and the lower ejector rod connected to the second piston.

[0013] A further improvement of the present invention, a heavy-duty forging hydraulic press with a central synchronous ejection device, is that the cylinder slide block further includes a main oil cylinder installed on the upper crossbeam and several auxiliary oil cylinders installed on the upper crossbeam. The top of the upper slide block is provided with an oil pressure hole, the main piston of the main oil cylinder is connected to the oil pressure hole, and the auxiliary piston of the auxiliary oil cylinder is connected to the top of the upper slide block.

[0014] A further improvement of the present invention, a heavy-duty forging hydraulic press with a central synchronous ejection device, is that it further includes an upper pad plate connected to the bottom of the upper slide block. The bottom surface of the upper pad plate is provided with a plurality of upper connecting grooves spaced apart. The vertical cross-section of the upper connecting groove is inverted T-shaped. The upper mold is clamped and connected to the upper connecting groove. The upper pad plate is provided with a fourth through hole corresponding to the position of the upper ejector rod. The upper ejector rod can pass through the fourth through hole.

[0015] A further improvement of the present invention, a heavy-duty forging hydraulic press with a central synchronous ejection device, is that the worktable mechanism includes a movable frame, a drive motor disposed on the movable frame, and an axle disposed on the movable frame and driven and connected to the drive motor, wherein the first through hole is formed in the movable frame.

[0016] A further improvement of the present invention, a heavy-duty forging hydraulic press with a central synchronous ejection device, is that a lower pad is provided on the top of the mobile frame, and a number of lower connecting grooves are spaced apart on the top surface of the lower pad. The vertical cross-section of the lower connecting groove is inverted T-shaped. The lower die is clamped and connected to the lower connecting groove. A third through hole is provided on the lower pad corresponding to the position of the first through hole, and the lower ejector rod can pass through the third through hole.

[0017] A further improvement of the present invention, a heavy-duty die forging hydraulic press with a central synchronous ejection device, is that it further includes a locking mechanism slidably disposed on the tie rod, the locking mechanism being used to lock the worktable mechanism and the hydraulic frame.

[0018] A further improvement of the present invention, a heavy-duty die forging hydraulic press with a central synchronous ejection device, is that the locking mechanism includes a connecting rod slidably disposed between two adjacent tie rods and a plurality of adsorption blocks connected to the connecting rod, the adsorption blocks being able to adsorb and connect to the mobile frame.

[0019] A method of using a heavy-duty forging hydraulic press with a central synchronous ejection device, wherein the method of using the heavy-duty forging hydraulic press as described above includes the following steps:

[0020] S1. The robotic arm grips the billet and delivers it to a designated height at the center of the heavy-duty forging hydraulic press;

[0021] S2. The lower push rod extends upward and the upper push rod extends downward, so that the billet is clamped between the upper push rod and the lower push rod;

[0022] S3. The robotic arm releases the grippers to release the billet and then exits the heavy-duty forging hydraulic press;

[0023] S4. The lower ejector rod retracts downward and the upper ejector rod extends downward to deliver the blank into the lower mold cavity of the lower mold.

[0024] S5. The upper ejector rod retracts upward and the lower ejector rod retracts downward. At this time, the lower ejector rod closes the lower mold cavity of the lower mold and the upper ejector rod closes the upper mold cavity of the upper mold. Then the upper slider descends so that the upper mold moves downward to press the blank located in the lower mold.

[0025] S6. The blank is pressed into a part, the lower push rod extends upward and the upper push rod extends downward to clamp the part;

[0026] S7. The upper slider moves upward, the lower push rod pushes upward, and the upper push rod retracts upward, so that the upper push rod and the lower push rod clamp the workpiece and move it to the material picking position;

[0027] S8. The robotic arm clamps the workpiece, the upper push rod retracts upward, and the lower push rod retracts downward, so that the upper push rod and the lower push rod release the workpiece;

[0028] S9. The robotic arm pulls the workpiece away from the heavy-duty forging hydraulic press.

[0029] This invention relates to a heavy-duty forging hydraulic press. By incorporating upper and lower ejection mechanisms, the blank is clamped during unloading, ensuring stable placement in the lower die. This eliminates the need for repeated adjustments by the robotic arm, improving blank placement efficiency and preventing damage to the die components. During pressing, the upper and lower ejection mechanisms work together, precisely controlling the extension and retraction of the upper and lower ejector rods. This not only ensures accurate blank positioning within the die cavity but also significantly reduces pressing defects caused by blank misalignment. Furthermore, this invention optimizes the ejection process, allowing the part to be quickly and smoothly transferred to the unloading position after forming, further improving production efficiency and part quality. The upper and lower backing plates facilitate connection of the upper die to the upper backing plate and vice versa. The worktable mechanism facilitates the replacement of dies of different specifications and the maintenance of the die components, lower ejection mechanism, and upper ejection mechanism. By incorporating a locking mechanism made of high-strength materials, which provides reliable locking functionality, the mechanism ensures that the worktable will not shift due to external forces during the pressing process. This effectively improves the positional stability of the worktable and enhances the stability of the workpiece during pressing.

[0030] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a heavy-duty die forging hydraulic press with a central synchronous ejection device provided by the present invention, wherein the die assembly is omitted.

[0033] Figure 2 This is a schematic diagram of a heavy-duty forging hydraulic press with a central synchronous ejection device, comprising a cylinder slide block, an upper ejection mechanism, a lower ejection mechanism, and a worktable mechanism.

[0034] Figure 3 This is a schematic diagram of the upper slide block in a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention. Figure 1 .

[0035] Figure 4 This is a schematic diagram of the upper slide block in a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention. Figure 2 .

[0036] Figure 5 This is a schematic diagram of a heavy-duty forging hydraulic press with a central synchronous ejection device, including a cylinder slide block, an upper ejection mechanism, and an upper pad.

[0037] Figure 6 This is a schematic diagram of the lower ejection mechanism, worktable mechanism, and locking mechanism in a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention. Figure 1 .

[0038] Figure 7 This is a schematic diagram of the lower ejection mechanism, worktable mechanism, and locking mechanism in a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention. Figure 2 .

[0039] Figure 8 This is a schematic diagram of a die assembly in a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention.

[0040] Figure 9 This is a schematic diagram of the lower die of a heavy-duty forging hydraulic press with a central synchronous ejection device provided by the present invention.

[0041] Figure label:

[0042] 1. Upper crossbeam; 2. Lower crossbeam; 3. Tie rod; 4. Main oil cylinder; 41. Main piston; 5. Auxiliary oil cylinder; 6. Upper slider; 61. Hydraulic pressure hole; 62. Auxiliary slot; 63. First connecting hole; 7. Upper ejection mechanism; 71. Upper ejector rod; 8. Upper pad; 81. Upper connecting slot; 9. Worktable mechanism; 91. Moving frame; 92. Drive motor; 93. Axle; 10. Lower pad; 101. Lower connecting slot; 102. Third through hole; 11. Locking mechanism; 111. Connecting rod; 112. Adsorption block; 12. Lower ejection mechanism; 121. Lower ejector rod; 13. Upper mold; 131. First mold hole; 14. Lower mold; 141. Second mold hole. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The following embodiments are used to illustrate this invention but should not be used to limit the scope of this invention.

[0044] The following is combined with Figures 1 to 9The present invention describes a heavy-duty die forging hydraulic press with a center synchronous ejection device, comprising:

[0045] A hydraulic frame includes an upper crossbeam 1, a lower crossbeam 2, and a plurality of tie rods 3 connecting the upper crossbeam 1 and the lower crossbeam 2. The upper crossbeam 1 is connected to a cylinder slider, and the cylinder slider includes an upper slider 6 that slides on the tie rods 3. The bottom of the upper slider 6 is provided with a first connecting hole 63.

[0046] The upper ejection mechanism 7 is installed in the first connecting hole 63. The upper ejection mechanism has an upper ejection rod, and the upper ejection rod 71 of the upper ejection mechanism 7 can extend downward.

[0047] The lower ejection mechanism 12 is installed on the lower crossbeam 2. The lower ejection mechanism 12 and the upper ejection mechanism 7 are correspondingly arranged. The lower ejection mechanism has a lower ejection rod, and the lower ejection rod 121 of the lower ejection mechanism 12 can extend upward.

[0048] The worktable mechanism 9 is slidably mounted on the top of the lower crossbeam 2. The worktable mechanism 9 has a first through hole, through which the lower push rod 121 can pass.

[0049] The mold assembly includes an upper mold 13 mounted on the bottom of the upper slider 6 and a lower mold 14 mounted on the top of the worktable mechanism 9. The upper mold 13 has a first mold hole 131 and the lower mold 14 has a second mold hole 141. The upper ejector rod 71 can pass through the first mold hole 131 and the lower ejector rod 121 can pass through the second mold hole 141.

[0050] In a preferred embodiment of the present invention, a heavy-duty die forging hydraulic press with a central synchronous ejection device is provided, such as... Figure 2 As shown, the upper ejection mechanism 7 includes a first hydraulic cylinder installed in the first connecting hole 63. The first hydraulic cylinder has a retractable first piston, and the upper ejector rod 71 is connected to the first piston. The first hydraulic cylinder drives the first piston to perform retractable movement, thereby driving the upper ejector rod 71 to move.

[0051] Furthermore, such as Figure 2 As shown, the lower crossbeam 2 has a second connecting hole; the lower ejector mechanism 12 includes a second hydraulic cylinder installed in the second connecting hole, the second hydraulic cylinder having a retractable second piston, and the lower ejector rod 121 connected to the second piston. The second hydraulic cylinder drives the second piston to perform retractable movement, thereby driving the lower ejector rod 121 to move.

[0052] Furthermore, such as Figure 3 and Figure 4As shown, the cylinder slider also includes a main oil cylinder 4 installed on the upper crossbeam 1 and several auxiliary oil cylinders 5 installed on the upper crossbeam 1. The top of the upper slider 6 is provided with an oil pressure hole 61. The main piston 41 of the main oil cylinder 4 is connected to the oil pressure hole 61, and the auxiliary piston of the auxiliary oil cylinder 5 is connected to the top of the upper slider 6.

[0053] Preferably, the main hydraulic cylinder 4 provides the primary downward pressure to the upper slide block 6 during operation, ensuring the stable progress of the forging process. Simultaneously, several auxiliary hydraulic cylinders 5 are connected to the top of the upper slide block 6 via auxiliary pistons, assisting the main hydraulic cylinder 4 in its operation. They adjust the downward pressure and speed of the upper slide block 6 according to actual needs, further improving the operational flexibility and precision of the forging hydraulic press. In actual operation, the main hydraulic cylinder 4 and auxiliary hydraulic cylinders 5 cooperate to achieve precise control of the upper slide block 6.

[0054] Preferably, there are 4 auxiliary oil cylinders 5, which surround the main oil cylinder 4. The top of the upper slider 6 is provided with an auxiliary position groove 62, and the bottom end of the auxiliary piston is connected to the auxiliary position groove 62.

[0055] Furthermore, such as Figure 2 and Figure 5 As shown, it also includes an upper pad plate 8 connected to the bottom of the upper slider 6. The bottom surface of the upper pad plate 8 is provided with several upper connecting grooves 81 spaced apart. The vertical cross section of the upper connecting grooves 81 is inverted T-shaped. The upper mold 13 is clamped and connected to the upper connecting grooves 81. The upper pad plate 8 is provided with a fourth through hole corresponding to the position of the upper push rod 71. The upper push rod 71 can pass through the fourth through hole.

[0056] Preferably, in one embodiment, the top of the upper mold 13 is provided with an upper snap-fit ​​block corresponding to the upper connecting groove 81, and the upper mold 13 is installed on the upper pad 8 by snapping the upper snap-fit ​​block into the upper connecting groove 81.

[0057] Preferably, in another specific embodiment, such as Figure 8 and Figure 9 As shown, the top of the upper mold 13 is a smooth surface. The upper mold 13 is aligned with the upper pad 8 at the position to be installed, and then the upper mold 13 is secured to the upper connecting groove 81 by an external snap-fit ​​strip to connect the upper pad 8 and the upper mold 13.

[0058] Furthermore, such as Figure 6 and Figure 7As shown, the worktable mechanism 9 includes a movable frame 91, a drive motor 92 mounted on the movable frame 91, and an axle 93 mounted on the movable frame 91 and driven by the drive motor 92. A first through hole is formed in the movable frame 91. The drive motor 92 provides power to the entire movable frame 91, and transmits the power to the track wheels through the axle 93, enabling flexible movement of the movable frame 91. The first through hole facilitates the passage of the lower ejector rod 121 of the lower ejector mechanism 12, allowing the lower ejector rod 121 and the upper ejector rod 71 to clamp the blank, improving the stability and accuracy of the blank entering the lower mold 14.

[0059] Furthermore, such as Figure 6 and Figure 7 As shown, the top of the mobile frame 91 is provided with a lower pad 10, and the top surface of the lower pad 10 is provided with a plurality of lower connecting grooves 101 spaced apart. The vertical cross section of the lower connecting grooves 101 is inverted T-shaped. The lower mold 14 is clamped and connected to the lower connecting grooves 101. The lower pad 10 is provided with a third through hole 102 corresponding to the position of the first through hole, and the lower push rod 121 can pass through the third through hole 102.

[0060] Preferably, in one embodiment, a lower locking block is provided on the top of the lower mold 14 corresponding to the lower connecting groove 101, and the lower mold 14 is installed on the lower pad 10 by locking the lower locking block in the lower connecting groove 101.

[0061] Preferably, in another specific embodiment, such as Figure 8 and Figure 9 As shown, the top of the lower mold 14 is a smooth surface. The lower mold 14 is aligned with the position of the lower pad 10 to be installed, and then the lower mold 14 is secured to the lower connecting groove 101 and the lower mold 14 by the external snap-fit ​​strip to connect the lower pad 10 and the lower mold 14.

[0062] Furthermore, such as Figure 6 and Figure 7 As shown, it also includes a locking mechanism 11 that slides on the pull rod 3, the locking mechanism 11 being used to lock the workbench mechanism 9 and the hydraulic frame.

[0063] Specifically, the locking mechanism 11 includes a connecting rod 111 slidably disposed between two adjacent pull rods 3 and a plurality of adsorption blocks 112 connected to the connecting rod 111. The adsorption blocks 112 can adsorb and connect to the movable frame 91. When the worktable mechanism 9 moves to the set position, the connecting rod 111 slides downward along the pull rod 3, causing the adsorption blocks 112 to slide downward and adsorb onto the movable frame 91, thereby fixing the position of the movable frame 91 and preventing the movable frame 91 from moving during the blank pressing operation. The adsorption force of the adsorption blocks 112 can be adjusted according to actual working requirements to ensure that the movable frame 91 remains stable under different pressures and working conditions. When it is necessary to move the worktable mechanism 9, simply slide the connecting rod 111 upward to separate the adsorption blocks 112 from the movable frame 91, thereby releasing the fixation of the movable frame 91.

[0064] In one specific implementation, a robotic arm grips a billet and delivers it to a designated height at the center of a heavy-duty forging hydraulic press. At this time, the lower ejector rod 121 of the lower ejector mechanism 12 extends upward from the first through hole, the third through hole 102, and the second die hole 141, while the upper ejector rod 71 of the upper ejector mechanism 7 extends downward from the fourth through hole and the first die hole 131, so that the billet is gripped between the upper ejector rod 71 and the lower ejector rod 121. The robotic arm releases its gripper to release the billet and then exits the heavy-duty forging hydraulic press, at which point the billet is still gripped between the upper ejector rod 71 and the lower ejector rod 121. The lower ejector rod 121 retracts downward, and the upper ejector rod 71 extends downward, causing the billet to move downward and thus deliver the billet to the lower die cavity of the lower die 14. The upper ejector rod 71 retracts upward, and the lower ejector rod 121 retracts downward, at which point the lower ejector rod 121 closes the lower die 14. The upper ejector rod 71 closes the upper cavity of the upper mold 13, and then the main hydraulic cylinder 4 and the auxiliary hydraulic cylinder 5 control the upper slide block 6 to descend, so that the upper mold 13 moves downward to press the blank located in the lower mold 14, thereby pressing the blank into a part; the lower ejector rod 121 extends upward and the upper ejector rod 71 extends downward to clamp the part. At this time, the main hydraulic cylinder 4 and the auxiliary hydraulic cylinder 5 control the upper slide block 6 to rise, so that the upper mold 13 moves upward. At the same time, the lower ejector rod 121 pushes upward and the upper ejector rod 71 retracts upward, so that the upper ejector rod 71 and the lower ejector rod 121 clamp the part and move it to the material removal position; the robot arm clamps the part, the upper ejector rod 71 retracts upward and the lower ejector rod 121 retracts downward, so that the upper ejector rod 71 and the lower ejector rod 121 release the part; the robot arm drives the part away from the heavy-duty forging hydraulic press to complete the pressing work of the part.

[0065] A method of using a heavy-duty forging hydraulic press with a central synchronous ejection device, wherein the method of using the heavy-duty forging hydraulic press described above includes the following steps:

[0066] S1. The robotic arm grips the billet and delivers it to a designated height at the center of the heavy-duty forging hydraulic press;

[0067] S2. The lower push rod 121 extends upward and the upper push rod 71 extends downward, so that the billet is clamped between the upper push rod 71 and the lower push rod 121;

[0068] S3. The robotic arm releases the grippers to release the billet and then exits the heavy-duty forging hydraulic press;

[0069] S4. The lower ejector rod 121 retracts downward and the upper ejector rod 71 extends downward to deliver the blank into the lower mold cavity of the lower mold 14.

[0070] S5. The upper ejector rod 71 retracts upward and the lower ejector rod 121 retracts downward. At this time, the lower ejector rod 121 closes the lower mold cavity of the lower mold 14 and the upper ejector rod 71 closes the upper mold cavity of the upper mold 13. Then the upper slider 6 descends so that the upper mold 13 moves downward to press the blank located in the lower mold 14.

[0071] S6. The blank is pressed into a part, the lower push rod 121 extends upward and the upper push rod 71 extends downward to clamp the part;

[0072] S7. The upper slider 6 moves upward, the lower push rod 121 pushes upward, and the upper push rod 71 retracts upward, so that the upper push rod 71 and the lower push rod 121 clamp the workpiece and move it to the material picking position.

[0073] S8. The robotic arm clamps the workpiece, the upper push rod 71 retracts upward, and the lower push rod 121 retracts downward, so that the upper push rod 71 and the lower push rod 121 release the workpiece;

[0074] S9. The robotic arm pulls the workpiece away from the heavy-duty forging hydraulic press.

[0075] This invention relates to a heavy-duty forging hydraulic press. By incorporating an upper ejector mechanism 7 and a lower ejector mechanism 12, the blank is clamped during unloading, ensuring stable placement within the lower die 14. This avoids repeated adjustments by the robotic arm, improving blank placement efficiency and preventing damage to the die components. During pressing, the upper ejector mechanism 7 and lower ejector mechanism 12 work together, precisely controlling the extension and retraction of the upper ejector rod 71 and lower ejector rod 121. This not only effectively ensures accurate positioning of the blank within the die cavity but also significantly reduces pressing defects caused by blank misalignment. Furthermore, this invention optimizes the ejection process, allowing the part to be quickly and smoothly transferred to the unloading position after forming, further improving production efficiency and part quality. The upper backing plate 8 and lower backing plate 10 facilitate the connection of the upper die 13 to the upper backing plate 8 and the lower die 14 to the lower backing plate 10. The worktable mechanism 9 facilitates the replacement of dies of different specifications or the maintenance of the die components, lower ejector mechanism 12, and upper ejector mechanism 7. By setting a locking mechanism 11, which is made of high-strength material and has a reliable locking function, the locking mechanism 11 can ensure that the worktable mechanism 9 will not be displaced due to external force during the pressing process, effectively improving the positional stability of the worktable mechanism 9 and the stability of the workpiece pressing.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heavy-duty die forging hydraulic press with a central synchronous ejection device, characterized in that, include: A hydraulic frame includes an upper crossbeam, a lower crossbeam, and several tie rods connecting the upper crossbeam and the lower crossbeam. The upper crossbeam is connected to a cylinder-equipped slider, which includes an upper slider that slides on the tie rods. The bottom of the upper slider has a first connecting hole, and the lower crossbeam has a second connecting hole. The cylinder-driven slider also includes a main oil cylinder installed on the upper crossbeam and several auxiliary oil cylinders installed on the upper crossbeam. The top of the upper slider is provided with an oil pressure hole. The main piston of the main oil cylinder is connected to the oil pressure hole, and the auxiliary piston of the auxiliary oil cylinder is connected to the top of the upper slider. An upper ejection mechanism is installed in the first connecting hole, and the upper ejection mechanism has an upper ejection rod that can extend downward. The upper ejection mechanism includes a first hydraulic cylinder installed in the first connecting hole, the first hydraulic cylinder having a retractable first piston, and the upper ejector rod connected to the first piston; The lower ejection mechanism is installed on the lower crossbeam. The lower ejection mechanism and the upper ejection mechanism are correspondingly arranged. The lower ejection mechanism has a lower ejection rod that can extend upward. The lower ejection mechanism includes a second hydraulic cylinder installed in the second connecting hole, the second hydraulic cylinder having a retractable second piston, and the lower ejection rod connected to the second piston; A worktable mechanism is slidably mounted on the top of the lower crossbeam. The worktable mechanism has a first through hole through which the lower push rod can pass. The mold assembly includes an upper mold mounted on the bottom of the upper slider and a lower mold mounted on the top of the worktable mechanism. The upper mold has a first mold hole, and the lower mold has a second mold hole. The upper ejector rod can pass through the first mold hole, and the lower ejector rod can pass through the second mold hole. The bottom of the upper slider is connected to an upper pad plate. The bottom surface of the upper pad plate is provided with several upper connecting grooves spaced apart. The vertical cross-section of the upper connecting groove is inverted T-shaped. The upper mold is clamped and connected to the upper connecting groove. The upper pad plate is provided with a fourth through hole corresponding to the position of the upper ejector rod. The upper ejector rod can pass through the fourth through hole.

2. A heavy-duty die forging hydraulic press with a central synchronous ejection device according to claim 1, characterized in that, The workbench mechanism includes a movable frame, a drive motor mounted on the movable frame, and an axle mounted on the movable frame and driven by the drive motor. The first through hole is formed in the movable frame.

3. A heavy-duty die forging hydraulic press with a central synchronous ejection device according to claim 2, characterized in that, The top of the mobile frame is provided with a lower pad plate, and the top surface of the lower pad plate is provided with several lower connecting grooves spaced apart. The vertical cross-section of the lower connecting groove is inverted T-shaped. The lower mold is clamped and connected to the lower connecting groove. The lower pad plate is provided with a third through hole corresponding to the position of the first through hole, and the lower push rod can pass through the third through hole.

4. A heavy-duty die forging hydraulic press with a central synchronous ejection device according to claim 2, characterized in that, It also includes a locking mechanism that slides on the pull rod, the locking mechanism being used to lock the workbench mechanism and the hydraulic frame.

5. A heavy-duty die forging hydraulic press with a central synchronous ejection device according to claim 4, characterized in that, The locking mechanism includes a connecting rod slidably disposed between two adjacent pull rods and a plurality of adsorption blocks connected to the connecting rod, the adsorption blocks being able to adsorb and connect to the mobile frame.

6. A method of using a heavy-duty die forging hydraulic press with a central synchronous ejection device, characterized in that, Performing the method of use using a heavy-duty forging hydraulic press as described in any one of claims 1 to 5 includes the following steps: S1. The robotic arm grips the billet and delivers it to a designated height at the center of the heavy-duty forging hydraulic press; S2. The lower push rod extends upward and the upper push rod extends downward, so that the billet is clamped between the upper push rod and the lower push rod; S3. The robotic arm releases the grippers to release the billet and then exits the heavy-duty forging hydraulic press; S4. The lower ejector rod retracts downward and the upper ejector rod extends downward to deliver the blank into the lower mold cavity of the lower mold. S5. The upper ejector rod retracts upward and the lower ejector rod retracts downward. At this time, the lower ejector rod closes the lower mold cavity of the lower mold and the upper ejector rod closes the upper mold cavity of the upper mold. Then the upper slider descends so that the upper mold moves downward to press the blank located in the lower mold. S6. The blank is pressed into a part, the lower push rod extends upward and the upper push rod extends downward to clamp the part; S7. The upper slider moves upward, the lower push rod pushes upward, and the upper push rod retracts upward, so that the upper push rod and the lower push rod clamp the workpiece and move it to the material picking position; S8. The robotic arm clamps the workpiece, the upper push rod retracts upward, and the lower push rod retracts downward, so that the upper push rod and the lower push rod release the workpiece; S9. The robotic arm pulls the workpiece away from the heavy-duty forging hydraulic press.

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