A forging hydraulic press stripping mechanism

Abstract

The present application relates to the technical field of hydraulic machine, and more particularly to a forging hydraulic machine demolding mechanism, which comprises a base, a movable table, an upper cross beam, a stand, a hydraulic transmission system, an electric control system and a material receiving cylinder, the base, the movable table and the upper cross beam are connected with the stand respectively, and the material receiving cylinder is installed on the side wall of the base; further comprising a demolding assembly and a transmission assembly, the demolding assembly is in close contact with the upper surface of the base and keeps horizontal when the hydraulic machine is working, thereby completing the forging of the hydraulic machine; the transmission assembly controls the rotation of the demolding assembly after the forging is completed, so that the lower die of the forging die is disconnected and automatically separated from the forged workpiece, and the forged workpiece falls into the material receiving device under the action of gravity to complete the automatic demolding and taking of the forged product.

Description

Technical Field

[0001] This invention relates to the field of hydraulic press technology, and more specifically to a demolding mechanism for a forging hydraulic press. Background Technology

[0002] A forging hydraulic press is a high-speed impact precision forming machine tool. Its main working principle is to use a hydraulic oil supply system as a power source to convert kinetic energy into impact energy, and then use this energy to rapidly strike metal materials to achieve plastic deformation. Forging hydraulic presses perform forming processes through high-speed impact, featuring high efficiency, high speed, high quality, and low energy consumption. Also known as a hot die forging hydraulic press, it is a series of products manufactured using advanced international technology. It is used in the automotive, tractor, internal combustion engine, shipbuilding, aviation, mining machinery, petroleum machinery, and hardware tool manufacturing industries for batch and large-scale die forging and finishing of ferrous and non-ferrous metals. The forged parts have high precision, high material utilization, high productivity, are easily automated, require low operator skill levels, and have low noise and vibration. Therefore, its application in modern forging production is increasingly widespread, making it an indispensable high-precision forging equipment in modern forging production.

[0003] The existing demolding structure of traditional forging hydraulic presses includes a hydraulic system and a demolding cylinder. This demolding structure is not only complex to install, but also cumbersome during operation, resulting in higher production costs and a higher equipment failure rate. Forging hydraulic presses operate in high-temperature environments, and the demolding cylinders in traditional forging hydraulic presses are prone to damage and oil leaks in high-temperature environments, further increasing production costs. Furthermore, the automatic part removal process after demolding in existing forging hydraulic presses requires an additional power unit, increasing energy consumption and reducing the production efficiency of the hydraulic press.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a demolding mechanism for a forging hydraulic press, which solves the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the demolding process of the forging hydraulic press after forging is cumbersome, which reduces production efficiency. After demolding, the parts need to be removed manually or by using another power device to remove the parts and complete the cooling process, which wastes resources.

[0006] To address the above problems, the present invention provides the following technical solution:

[0007] This invention provides a demolding mechanism for a forging hydraulic press, comprising a base, a movable platform, an upper crossbeam, a column, a hydraulic transmission system, an electrical control system, and a material-bearing cylinder. The base, movable platform, and upper crossbeam are respectively connected to the column. The upper crossbeam has a concave cross-section, which serves to fix the hydraulic transmission system and prevent oil leakage from the hydraulic transmission system from contaminating the hydraulic press structure below or causing a hazard at high temperatures. Under the control of the electrical control system, the hydraulic transmission system pushes the movable platform up and down. The material-bearing cylinder is installed on the side wall of the base. The mechanism also includes a demolding component and a transmission component. The transmission component is partially installed in a groove on the upper surface of the base. During forging operations, the demolding component adheres to and remains horizontal with the upper surface of the base, thus completing the forging process. After forging is completed, the transmission component controls the rotation of the demolding component, enabling the hydraulic press to automatically demold.

[0008] The demolding assembly includes a rotating shaft, a driven bevel gear, a worktable, a slider, fixed rods, connecting rods, a disc, and a fixed frame. Driven bevel gears that drive the rotating shaft are fixedly mounted on both sides. Circular protrusions at both ends of the rotating shaft engage the outer side of the fixed frame, restricting the shaft's movement within the frame. One end of the worktable is fixedly connected to the rotating shaft, and a slide rail is provided above the worktable for the slider to slide on. The slider slides on the slide rail when the demolding assembly rotates, allowing the lower die of the forging mold to open or close. This enables the lower die to open during demolding, allowing the workpiece to automatically detach from the mold, and the lower die to close during forging, ensuring the normal operation of the forging process. One end of each of the two fixed rods is fixedly connected to both sides of the slider, pulling the slider to slide on the slide rail. The other end of the fixed rod can be secured with a nut, thus connecting the... One end of the rod is engaged with the protrusion of the fixed rod, ensuring the stability of the connecting rod connection and facilitating the removal of the slider and mold together when the forging mold of the hydraulic press needs to be changed. This avoids the complex steps of readjusting the mold closing when changing the mold, making the mold changing process of the forging hydraulic press more convenient and faster, and greatly improving work efficiency. The other end of the connecting rod is rotatably connected to the disc. When the transmission component rotates and drives the worktable to rotate, one end of the connecting rod is fixed in position, and the other end of the connecting rod pulls the slider to slide within the worktable through the fixed rod, realizing the automatic demolding of the hydraulic press, which is efficient and labor-saving. A thin silicone strip is installed on the side of the connecting rod that contacts the disc, so that the connecting rod comes into contact with the disc during rotation and generates friction, making the rotation more stable. One side of the disc is fixedly connected to the inner side of the fixed frame, which stably fixes the disc on the hydraulic press.

[0009] The worktable is fixedly connected to the rotating shaft at one end in an arc shape, with the diameter of the arc equal to the height of the worktable. This allows the worktable to rotate with the rotating shaft without colliding or interfering with the base, and ensures that the arc-shaped portion of the worktable at one end remains in contact with the upper surface of the base during rotation, reducing the shear force on the worktable when supported by the fixing rod. The upper surface of the worktable, away from the rotating shaft, has a linear array of "T"-shaped grooves for mounting the forging die, which can fix half of the forging die on the worktable. The other half of the upper surface of the worktable has a rectangular groove, and the lower surface of the rectangular groove is provided with a slide rail for the slider to slide. The slide rail has notches to facilitate the removal of the slider when the die needs to be changed. The rectangular groove provides space for the slider to slide when the demolding assembly rotates. The lower die mounted on the slider and the lower die mounted on the worktable separate after the slider slides, and the workpiece is automatically demolded after the lower die opens. This prevents the workpiece from sticking to the die after forging and being difficult to separate, and the simple structure reduces manufacturing costs.

[0010] The lower surface of the slider is provided with a groove that mates with the slide rail; the upper surface of the slider is linearly arrayed with "T"-shaped grooves for installing the lower forging die, so that the other half of the lower forging die is fixed to the slider and slides with the slider when the demolding assembly rotates. When it is necessary to replace the forging die of the hydraulic press, the slider and the die can be taken out and replaced together, so that there is no need to readjust the die closing when replacing the die, making the process of replacing the forging die of the hydraulic press more convenient, and improving the efficiency of forging work while ensuring forging accuracy.

[0011] The disc has strip-shaped protrusions on the side away from the fixed frame. The circular array of strip-shaped protrusions contacts the disc when the connecting rod rotates, causing friction when the connecting rod rotates. A limiting pin is installed on the disc on the same side as the strip-shaped protrusions for the connecting rod to connect. The limiting pin limits the connecting rod, so that when the demolding assembly is placed horizontally, it pushes the lower mold of the mold into a closed position.

[0012] The strip-shaped protrusions provide friction for the connecting rod as it rotates on the disc. The rotation of the connecting rod is limited by the friction generated when the strip-shaped protrusions contact the thin silicone strip, which makes the sliding of the slider in the worktable more stable under the pulling action of the connecting rod. The limit pin in this position ensures that the forging process of the hydraulic press proceeds normally. When the worktable rotates and tilts, the slider slides to the position where the lower die is disconnected due to the pulling force of the connecting rod. This causes the workpiece attached to the lower die to detach from the lower die and fall off automatically under gravity. Furthermore, the length of the connecting rod limits the sliding distance of the slider, preventing the slider from sliding to the position where it is disassembled from the worktable during operation. This not only improves the working efficiency of the forging hydraulic press but also saves time for manual part removal.

[0013] The transmission assembly includes a hollow column, a rotating rod, a sliding sleeve, a drive gear, a transmission spur gear, a transmission rod, and a transmission bevel gear. The hollow column and the upright column are symmetrically mounted on the hydraulic press, forming a four-column hydraulic press together. The rotating rod is rotatably mounted inside the hollow column, with a threaded section at its upper end. A sliding sleeve with a threaded groove on its inner side is slidably mounted on the rotating rod, causing the rotating rod to rotate when the sliding sleeve slides on the threaded part of the rotating rod. A rectangular protrusion fixedly connected to the movable table is provided on the side of the sliding sleeve near the movable table, so that the hydraulic transmission system drives the movable table to move up and down while simultaneously causing the sliding sleeve to slide up and down. The drive gear is fixedly mounted at the lower end of the rotating rod, transmitting the rotation of the rotating rod to the transmission spur gear through gear meshing. The lower end of the transmission rod is rotatably connected to the base, and the upper end of the transmission rod is equipped with a transmission bevel gear that outputs the rotation of the rotating rod, providing kinetic energy for the rotation of the rotating shaft, and thus providing kinetic energy for the rotation of the demolding assembly. This reduces manufacturing and usage costs and prevents oil leakage as is common in traditional demolding cylinders, making it both convenient and efficient.

[0014] A section of thread on the outer wall of the rotating rod is located above the rotating rod. When the hydraulic transmission system of the hydraulic press is working and driving the movable table to slide, the sliding sleeve slides to the bottom of the rotating rod thread, which can keep the demolding component in a horizontal position, so as not to affect the use of the hydraulic press during normal feeding and forging processes. When the sliding sleeve slides upward to the thread and slides to the upper end, the rotating rod rotates and drives the demolding component to rotate. This enables the automatic rotation and demolding of the demolding component to be completed at the same time as the movable table rises after forging. This process does not require an additional power device to control the demolding of the forged workpiece, which reduces manufacturing costs and improves the working efficiency of the forging hydraulic press.

[0015] A movable cavity is provided below the hollow column. The movable cavity is a hollow semi-cylinder. The semi-cylindrical movable cavity is used to prevent interference with other structures during gear meshing and transmission, so that the hollow column does not affect the meshing of the driving gear and the transmission spur gear. A rectangular groove is opened on the side of the hollow column near the movable platform for the sliding sleeve to slide. The rectangular groove is used to provide space for the sliding sleeve to connect with the movable platform, thereby realizing the demolding work of the automatic control demolding component during hydraulic process at low cost and high efficiency.

[0016] The lower surface of the movable table is equipped with a sliding plate and a buckle. The lower surface of the movable table has a groove for the sliding plate to slide. The sliding plate is a rectangular block with the same length and width as the worktable, thus ensuring balanced pressure on the upper and lower forging dies during operation. This prevents uneven pressure during forging, which could lead to cracks in the workpiece and affect its quality. The upper surface of the sliding plate has protrusions that mate with the groove of the movable table. The lower surface of the sliding plate has a linear array of "T"-shaped slots for installing the upper forging die, allowing the upper forging die to be disassembled along with the sliding plate and used in conjunction with the lower forging die installed in the slider. This allows for complete die replacement when needed, eliminating the need for reinstalling the die and the complex process of adjusting the die assembly, reducing manpower waste. The buckle fixes the sliding plate in a fixed position, ensuring it remains fixed to the movable table during operation.

[0017] The support rod at the bottom of the material-bearing cylinder is fixedly connected to the side of the base to form a triangular structure. This triangular structure makes the cylinder more stable and reduces the vibration caused by the impact of the workpiece falling from the demolding assembly under gravity. The inclined side of the material-bearing cylinder limits the rotation angle of the worktable, thereby preventing the demolding assembly from colliding and interfering with other structures during rotation. This avoids damage to the forging die caused by excessive rotation angle of the worktable when the demolding assembly and transmission assembly malfunction, ensuring the safety of the forging die and the operator. The inner wall of the material-bearing cylinder is fixedly equipped with a protective pad to prevent workpiece collision damage, and the cylinder is filled with cooling sand required for cooling the workpiece. During the demolding process, the workpiece falls from the demolding assembly into the cooling sand in the cylinder under the action of gravity and centrifugal force, achieving rapid and automatic demolding and allowing for quick forging operations. This eliminates the need for manual demolding and part removal, improving the working efficiency of the hydraulic press.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The demolding mechanism of a forging hydraulic press of the present invention controls the rotation of the rotating shaft in the demolding assembly through the transmission assembly. The rotation of the rotating shaft causes the connecting rod to pull the slider to separate the two lower parts of the mold, thereby realizing the automatic demolding of the forging mold and ensuring the efficient operation of the forging process.

[0020] 2. The demolding mechanism of a forging hydraulic press of the present invention uses the sliding table to slide up and down during the forging process, which simultaneously drives the sliding sleeve in the transmission component to slide downward. The sliding of the sliding sleeve drives the rotating rod to rotate, thereby realizing the rotation of the demolding component. No additional power device is needed to control the demolding of the forged workpiece, reducing manufacturing costs. Under the action of gravity and centrifugal force, the forged workpiece is automatically collected and cooled by the material receiving cylinder, which improves production efficiency.

[0021] 3. The demolding mechanism of a forging hydraulic press of the present invention uses a detachable slider and sliding plate design to allow the mold to be disassembled together with it, avoiding the cumbersome process of closing the mold every time it is installed, and improving the forging efficiency of the hydraulic press. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the demolding component of the present invention;

[0026] Figure 3 This is a schematic diagram of the workbench of the present invention;

[0027] Figure 4 This is a schematic diagram of the slider of the present invention;

[0028] Figure 5 This is a schematic diagram of the disc of the present invention;

[0029] Figure 6 This invention is based on Figure 2 The main view;

[0030] Figure 7 This invention is based on the forging process after completion. Figure 2 The main view;

[0031] Figure 8 This is a schematic diagram of the transmission component of the present invention;

[0032] Figure 9 This invention is in Figure 8 Enlarged view of section A;

[0033] Figure 10 This invention is in Figure 8 Cross-sectional view along the BB direction;

[0034] Figure 11 This invention is in Figure 10 Enlarged view of section C;

[0035] Figure 12 This is a schematic diagram of the movable platform of the present invention.

[0036] In the diagram: 1. Base; 2. Movable platform; 21. Sliding plate; 22. Buckle; 3. Upper crossbeam; 4. Column; 5. Hydraulic transmission system; 6. Electrical control system; 7. Material receiving cylinder; 8. Demolding assembly; 81. Rotating shaft; 82. Driven bevel gear; 83. Worktable; 831. Slide rail; 832. "T" shaped groove; 833. Rectangular groove; 84. Slider; 841. "L" shaped slide groove; 85. Fixed rod; 86. Connecting rod; 87. Disc; 871. Strip-shaped protrusion; 872. Limiting pin; 88. Fixed frame; 9. Transmission assembly; 91. Hollow column; 911. Movable cavity; 912. Rectangular slide groove; 92. Rotating rod; 921. Thread; 93. Sliding sleeve; 94. Driving gear; 95. Transmission spur gear; 96. Transmission rod; 97. Transmission bevel gear. Detailed Implementation

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] like Figure 1 As shown, a demolding mechanism for a forging hydraulic press includes a base 1, a movable platform 2, an upper crossbeam 3, a column 4, a hydraulic transmission system 5, an electrical control system 6, and a material-bearing cylinder 7. The base 1, movable platform 2, and upper crossbeam 3 are respectively connected to the column 4, and the material-bearing cylinder 7 is installed on the side wall of the base 1. It also includes a demolding component 8 and a transmission component 9. When the hydraulic press is forging, the demolding component 8 is in contact with the upper surface of the base 1 and remains horizontal, thereby completing the forging process of the hydraulic press. After the forging is completed, the transmission component 9 controls the rotation of the demolding component 8, thereby enabling the hydraulic press to automatically demold.

[0039] During the operation of the forging hydraulic press, the column 4 is slidably connected to the base 1, the movable table 2, and the upper crossbeam 3. Before forging begins, the metal material is placed into the mold installed on the movable table 2 and the demolding assembly 8, and the position of the mold is adjusted. After the electrical control system 6 is powered on, the operator controls the hydraulic transmission system 5 through the electrical control system 6. The hydraulic pump in the hydraulic transmission system 5 provides driving force to push the movable table 2 downward in the guide of the column 4, applying high pressure to the metal material. The metal material is deformed under the influence of high pressure and is finally formed into a forged product of a specific shape. After forging is completed, the hydraulic transmission assembly 9 is controlled by the electrical control system 6 to raise the movable table 2 to a certain height. Then, the transmission assembly 9 drives the demolding assembly 8 to rotate on the base 1. The forged workpiece falls into the receiving cylinder 7 under the action of gravity, completing the automatic demolding and removal process of the forged product.

[0040] like Figure 2As shown, the demolding assembly 8 includes a rotating shaft 81, a driven bevel gear 82, a worktable 83, a slider 84, a fixed rod 85, a connecting rod 86, a disc 87, and a fixed frame 88. Driven bevel gears 82, which drive the rotating shaft 81 to rotate, are fixedly installed on both sides of the rotating shaft 81. One end of the worktable 83 is fixedly connected to the rotating shaft 81, and a slide rail 831 for the slider 84 to slide is provided above the worktable 83. When the demolding assembly 8 rotates, the slider 84 slides on the slide rail 831, causing the lower mold to open or close. The forged workpiece is then demolded. The end of the fixed rod 85 away from the slider 84 can be fixed with a nut, so that one end of the connecting rod 86 is engaged with the protrusion of the fixed rod 85. The other end of the connecting rod 86 is rotatably connected to the disc 87, and one side of the disc 87 is fixedly connected to the inner side of the fixed frame 88. The fixed frame 88 is fixedly connected to the base 1, thereby fixing the transmission assembly 9 on the hydraulic press. The two ends of the rotating shaft 81 are provided with circular protrusions, so that the movement of the rotating shaft 81 is restricted in the fixed frame 88.

[0041] like Figures 2 to 4 As shown, the end of the worktable 83 that is fixedly connected to the rotating shaft 81 is arc-shaped; the upper surface of the worktable 83, away from the rotating shaft 81, has a linear array of "T"-shaped grooves 832 for mounting the lower forging die; the other half of the upper surface of the worktable 83 has a rectangular groove 833, and the lower surface of the rectangular groove 833 is provided with a slide rail 831 for sliding the slider 84; the slide rail 831 has a notch, so that the slider 84 can be removed when the die needs to be changed; the lower surface of the slider 84 is provided with an "L"-shaped groove 841 that mates with the slide rail 831; the upper surface of the slider 84 has a linear array of "T"-shaped grooves 832 for mounting the lower forging die.

[0042] like Figure 5 As shown, the side of the disc 87 away from the fixed frame 88 is provided with a circular array of strip-shaped protrusions 871. The circular array of strip-shaped protrusions 871 contacts the disc 87 when the connecting rod 86 rotates, so that the connecting rod 86 generates friction when it rotates. On the same side of the disc 87 as the strip-shaped protrusions 871, a limiting pin 872 for connecting the connecting rod 86 is installed. The limiting pin 872 limits the connecting rod 86 so that when the demolding assembly 8 is placed horizontally, it pushes the lower mold of the mold into a closed position.

[0043] The strip-shaped protrusion 871 provides friction for the connecting rod 86 as it rotates on the disk. When the demolding assembly 8 rotates and the connecting rod 86 rotates in the limiting pin 872, the slider 84 slides in the worktable 83 under the pulling action of the connecting rod 86. The sliding process is more stable because the connecting rod 86 is limited by the friction generated by the contact between the strip-shaped protrusion 871 and the thin silicone strip on the connecting rod 86. When the slider 84 slides to the position where the lower mold is disconnected, the workpiece attached to the lower mold is separated from the lower mold and falls off automatically under gravity. The length of the connecting rod 86 limits the sliding distance of the slider 84, so that the slider 84 will not slide to the position where it is disassembled from the worktable 83 during the operation.

[0044] like Figure 6 and Figure 7 As shown, before the hydraulic press starts working, one section of the two-section forging die lower mold is first installed in the "T"-shaped groove 832 on the upper surface of the slider 84 by locking nuts. Then, the slider 84 is installed in the slide rail 831 of the worktable 83. The nut locks the connecting rod 86 on the protrusion at one end of the fixing rod 85 to fix the slider 84 in the slide rail 831. Finally, the other section of the die lower mold is fixedly installed in the "T"-shaped groove 832 on the upper surface of the worktable 83 by locking nuts. When the hydraulic press is forging, the hydraulic transmission system 5 pushes the movable table 2 downward to apply pressure to the metal material in the mold installed on the demolding assembly 8 to form it. At this time, the demolding assembly 8 is in a horizontal position on the base 1. The two ends of the connecting rod 86 are respectively connected to the limit pin 872 on the disc 87 and the center of the fixing rod 85. At this time, the slider 84 and the side of the rectangular groove 833 away from the rotating shaft 81 are in contact with each other, so that the die lower mold installed on the worktable 83 and the slider 84 are in a closed state.

[0045] When the demolding assembly 8 rotates, the driven bevel gear 82 rotates under the drive of the transmission assembly 9. The driven bevel gear 82 drives the rotating shaft 81 to rotate, and the rotation of the rotating shaft 81 drives the arc-shaped end of the worktable 83 to rotate. The slider 84 rotates with the rotation of the worktable 83. Since the limiting pin 872 connected to the connecting rod 86 is located at the eccentric position of the disk 87, when the slider 84 rotates, the distance between the center of the fixed rod 85 and the line connecting the limiting pin 872 increases. The connecting rod 86 pulls the fixed rod 85 to slide towards the side of the rectangular groove 833 closer to the rotating shaft 81. This causes the two sections of the lower mold installed on the worktable 83 and the slider 84 to separate while rotating, so that the forging workpiece attached to the forging mold can be automatically detached. When the worktable 83 rotates at a certain angle, it falls into the receiving cylinder 7 under the action of gravity and the centrifugal force generated by the rotation. This prevents the workpiece from sticking to the mold after forging and being difficult to separate and demold, omitting the manual demolding and part removal process and improving the forging efficiency.

[0046] The design of the demolding component 8 causes the rotating shaft 81 to rotate under the drive of the transmission component 9. The rotating shaft 81 drives the worktable 83 to rotate, and the slider 84 slides in the rectangular groove 833 of the worktable 83. This causes the connecting rod 86 to pull the slider 84 to separate the two lower parts of the mold, thereby realizing the automatic demolding of the forging mold and ensuring the high efficiency of the forging process.

[0047] like Figures 8 to 11 As shown, the transmission assembly 9 includes a hollow column 91, a rotating rod 92, a sliding sleeve 93, a drive gear 94, a transmission spur gear 95, a transmission rod 96, and a transmission bevel gear 97. The hollow column 91 is symmetrically mounted on the hydraulic press with the column 4, forming a four-column hydraulic press together with the column 4. The rotating rod 92 is rotatably mounted inside the hollow column 91, and the upper end of the rotating rod 92 is provided with a thread 921. A sliding sleeve 93 with a threaded groove on its inner side is slidably mounted on the rotating rod 92, thereby making the sliding sleeve 93 have a thread 921 on the rotating rod 92. When part of the sliding mechanism 1 slides, it drives the rotating rod 92 to rotate. The sliding sleeve 93 is provided with a rectangular protrusion fixedly connected to the movable platform 2 on the side near the movable platform 2, so that the hydraulic transmission system 5 drives the movable platform 2 to move up and down while driving the sliding sleeve 93 to slide up and down. The driving gear 94 is fixedly installed at the lower end of the rotating rod 92, so that the rotation of the rotating rod 92 is transmitted to the transmission spur gear 95 through gear meshing. The lower end of the transmission rod 96 is rotatably connected to the base 1, and the upper end of the transmission rod 96 is equipped with a transmission bevel gear 97 that outputs the rotation of the rotating rod 92.

[0048] Before the hydraulic press performs forging, the hydraulic transmission system 5 pushes the movable table 2 downward, causing the sliding sleeve 93 to slide below the thread 921 of the rotating rod 92, so that the demolding assembly 8 is in a horizontal position, allowing the metal material to be placed into the mold. During forging, the hydraulic transmission system 5 continues to push the movable table 2 downward. At this time, the transmission assembly 9 does not rotate, and the demolding assembly 8 remains in a horizontal position while the hydraulic forging process continues. After the hydraulic press completes forging, the hydraulic transmission system 5 drives the movable table 2 upward, causing the sliding sleeve 93 to slide upward to the thread 921 and then to the thread 922. At the upper end of 21, during this process, the threaded groove in the sliding sleeve 93 engages with the thread 921 on the rotating rod 92, causing the rotating rod 92 to rotate. The rotation of the rotating rod 92 drives the drive gear 94 fixedly installed at the bottom of the rotating rod 92 to rotate. At the same time, the drive gear 94 meshes and rotates with the transmission spur gear 95. The transmission spur gear 95 drives the transmission rod 96 fixedly connected to it to rotate, which in turn drives the transmission bevel gear 97 fixedly installed at the upper end of the transmission rod 96 to rotate. This drives the transmission bevel gear 82 in the demolding assembly 8 to mesh and transmit power, ultimately converting the sliding of the sliding sleeve 93 into the rotation of the demolding assembly 8, which saves manufacturing costs and is both efficient and convenient.

[0049] A movable cavity 911 is provided below the hollow column 91. The movable cavity 911 is a hollow semi-cylinder. The semi-cylindrical movable cavity 911 is used to prevent interference with other structures when the gear meshes. A rectangular groove 912 is opened on the side of the hollow column 91 near the movable platform 2 for the sliding sleeve 93 to slide, so that the sliding sleeve 93 is fixedly connected to the movable platform 2. When the hydraulic transmission system 5 of the hydraulic press drives the movable platform 2 to slide up and down, the sliding sleeve 93 slides up and down with the movable platform 2 in the rectangular groove 912 of the hollow column 91.

[0050] The transmission assembly 9 slides up and down through the movable table 2 during the forging process, which drives the sliding sleeve 93 in the transmission assembly 9 to slide down. The sliding of the sliding sleeve 93 drives the rotating rod 92 to rotate, thereby realizing the rotation of the demolding assembly 8. No additional power device is needed to control the demolding of the forged workpiece, which reduces manufacturing costs and improves production efficiency.

[0051] like Figure 12 As shown, a sliding plate 21 and a latch 22 are installed on the lower surface of the movable table 2; a groove for sliding the sliding plate 21 is formed on the lower surface of the movable table 2; the sliding plate 21 is a rectangular block with the same length and width as the worktable 83, thereby balancing the pressure of the upper and lower dies of the forging die on the hydraulic press during operation; the upper surface of the sliding plate 21 is provided with a protrusion that mates with the groove of the movable table 2; the lower surface of the sliding plate 21 is linearly arrayed with "T"-shaped grooves 832 for mounting the upper forging die, thereby allowing the upper forging die to be mounted... The sliding plate 21 is disassembled together with the sliding plate 21; the buckle 22 fixes the sliding plate 21 in a fixed position; before the hydraulic press starts working, the upper die of the forging mold is first installed in the "T" shaped groove 832 on the lower surface of the sliding plate 21 by locking the nut, and then the sliding plate 21 is slidably installed into the "T" shaped groove 832 on the lower surface of the movable table 2. The buckle 22 is then inserted into the buckle 22 groove on the sliding plate 21 and the movable table 2 to fix the sliding plate 21, that is, the upper die of the forging mold is fixed in preparation for the forging work of the hydraulic press.

[0052] In the operation of this invention, the upright column 4 and hollow column 91 are connected to the base 1, movable platform 2 and upper crossbeam 3 to form a four-column structure. After the electrical control system 6 is powered on, the operator controls the hydraulic transmission system 5 through the electrical control system 6 to push the movable platform 2 downward to apply high pressure to the metal material to form a forged workpiece of a specific shape. After forging, the movable platform 2 moves upward to drive the rotating rod 92 in the transmission assembly 9 to rotate. The rotating rod 92 drives the rotating shaft 81 in the demolding assembly 8 to rotate through gear transmission. The rotation of the rotating shaft 81 causes the arc-shaped end of the worktable 83 to rotate on the base 1. At the same time as the worktable 83 rotates, the connecting rod 86 pulls the fixing rods 85 on both sides of the slider 84 to pull the slider 84 to the side of the rectangular groove 833 near the rotating shaft 81. The sliding of the slider 84 causes the lower mold of the forging mold to break, completing the separation of the forged workpiece from the mold. The forged workpiece falls into the material receiving cylinder 7 under the action of gravity, completing the automatic demolding and removal of the forged product.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A demolding mechanism for a forging hydraulic press, comprising a base (1), a movable table (2), an upper crossbeam (3), a column (4), a hydraulic transmission system (5), an electrical control system (6), and a material-bearing cylinder (7), wherein the base (1), the movable table (2), and the upper crossbeam (3) are respectively connected to the column (4), and the material-bearing cylinder (7) is installed on the side wall of the base (1); characterized in that: It also includes a demolding assembly (8) and a transmission assembly (9). The demolding assembly (8) is attached to and kept horizontal with the upper surface of the base (1) when the hydraulic press is forging, thereby completing the forging of the hydraulic press. The transmission assembly (9) controls the rotation of the demolding assembly (8) after the forging is completed so that the hydraulic press can complete the automatic demolding. The transmission assembly (9) includes a hollow column (91), a rotating rod (92), a sliding sleeve (93), a drive gear (94), a transmission spur gear (95), a transmission rod (96), and a transmission bevel gear (97); the hollow column (91) is symmetrically mounted on the hydraulic press, and the column (4) is symmetrically mounted on the hydraulic press; the rotating rod (92) is rotatably mounted inside the hollow column (91), and the upper end of the rotating rod (92) is provided with a thread (921), and a groove with a threaded groove on the inner side is slidably mounted on the rotating rod (92). The sliding sleeve (93) has a threaded groove that allows the sliding sleeve (93) to slide to the threaded (921) part of the rotating rod (92) and drive the rotating rod (92) to rotate. The sliding sleeve (93) has a rectangular protrusion that is fixedly connected to the movable platform (2) on the side near the movable platform (2). The driving gear (94) is fixedly installed at the lower end of the rotating rod (92) and meshes with the transmission spur gear (95). The lower end of the transmission rod (96) is rotatably connected to the base (1). The upper end of the transmission rod (96) is equipped with a transmission bevel gear (97). The demolding assembly (8) includes a rotating shaft (81), a driven bevel gear (82), a worktable (83), a slider (84), a fixed rod (85), a connecting rod (86), a disc (87), and a fixed frame (88). The driven bevel gears (82) that drive the rotating shaft (81) to rotate are fixedly installed on both sides of the rotating shaft (81). One end of the worktable (83) is fixedly connected to the rotating shaft (81), and a slide rail for the slider (84) to slide is provided above the worktable (83). (831); The slider (84) slides on the slide rail (831) when the demolding assembly (8) rotates, so that the lower mold of the mold separates or closes, thereby demolding the forged workpiece; One end of the connecting rod (86) is engaged with the protrusion of the fixed rod (85), and the other end of the connecting rod (86) is rotatably connected to the disc (87). One side of the disc (87) is fixedly connected to the inner side of the fixed frame (88); The transmission bevel gear (97) meshes with the driven bevel gear (82) for transmission.

2. The demolding mechanism for a forging hydraulic press according to claim 1, characterized in that: The worktable (83) is fixedly connected to the rotating shaft (81) at one end in an arc shape. The arc-shaped end of the worktable (83) is used to allow the worktable (83) to rotate with the rotating shaft (81) without colliding with the base (1). The upper surface of the worktable (83) away from the rotating shaft (81) is linearly arrayed with "T"-shaped grooves (832) for installing the forging lower die. The "T"-shaped grooves (832) are used to fix half of the forging lower die on the demolding assembly (8) by cooperating with T-shaped screws. The other half of the upper surface of the worktable (83) is provided with rectangular grooves (833). The slide rail (831) is set on the lower surface of the rectangular groove (833). The slide rail (831) is provided with a horizontal notch. The horizontal notch can be slid with the lower end of the slider (84) to remove the slider (84) when the die needs to be changed.

3. The demolding mechanism for a forging hydraulic press according to claim 1, characterized in that: The lower surface of the slider (84) is provided with an "L"-shaped groove (841). The "L"-shaped groove (841) is used to allow the slider (84) to slide on the slide rail (831) while the slider (84) is unidirectionally limited by the protruding end of the "L"-shaped groove (841).

4. The demolding mechanism for a forging hydraulic press according to claim 1, characterized in that: The disc (87) has a strip-shaped protrusion (871) on the side away from the fixed frame (88). The circular array of the strip-shaped protrusions (871) is in contact with the disc (87) when the connecting rod (86) rotates, so that the connecting rod (86) generates friction when it rotates. A limiting pin (872) for connecting the connecting rod (86) is installed on the disc (87) on the same side as the strip-shaped protrusions (871). The limiting pin (872) limits the connecting rod (86) so that when the demolding assembly (8) is placed horizontally, it pushes the lower mold of the mold to the closed position.

5. The demolding mechanism for a forging hydraulic press according to claim 1, characterized in that: A movable cavity (911) is provided below the hollow column (91). The movable cavity (911) is a hollow semi-cylinder. The semi-cylinder movable cavity (911) is used to prevent interference with other structures when the gear meshes. A rectangular slide groove (912) is provided on the side of the hollow rod near the movable platform (2). The rectangular slide groove (912) is used to provide space for the sliding sleeve (93) to connect with the movable platform (2).

6. The demolding mechanism for a forging hydraulic press according to claim 1, characterized in that: The movable table (2) is equipped with a sliding plate (21) and a buckle (22); the lower surface of the movable table (2) is provided with a groove for the sliding plate (21) to slide. The sliding plate (21) is a rectangular block with the same length and width as the worktable (83). The sliding plate (21) works in cooperation with the worktable (83) to keep the pressure of the upper and lower dies of the forging mold balanced by the hydraulic press during the forging process. The buckle (22) is stepped and is used to restrict the sliding of the sliding plate (21).

Images