Lower anvil device for free forging hydraulic press

Abstract

The utility model relates to the technical field of forging equipment, and particularly discloses a lower anvil device for a free forging hydraulic press, which comprises an anvil block, and a rotating disc is arranged above the anvil block; a mounting hole is formed in the center of the anvil block, a hydraulic motor is arranged in the mounting hole, and a connecting shaft is arranged on the hydraulic motor; a first sliding groove is formed in the periphery of the mounting hole, an elastic assembly is arranged in the first sliding groove, and a sliding assembly is arranged on the elastic assembly; a communicating pipeline communicated with the surface of the anvil block is arranged on the mounting hole; a cooling input pipeline is arranged in the middle of the anvil block and is communicated with the communicating pipeline; a through hole is formed in the center of the rotating disc; the upper part of the connecting shaft is arranged in the through hole; a second sliding groove is formed in the periphery of the through hole, the second sliding groove and the first sliding groove are oppositely arranged, and the upper portion of the sliding assembly is arranged in the second sliding groove. In the limited space structure of the lower anvil, the rotating and cooling functions are added, the lower anvil can be suitable for various hydraulic devices and space structures, the service life is prolonged, and the forging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forging equipment, in particular to a lower anvil device for a free forging hydraulic press. Background Art

[0002] Free forging is an important metal processing method that uses impact force or pressure to make the metal deform freely between the upper and lower anvil surfaces, obtaining the required shape, size and certain mechanical properties without any restrictions, achieving plastic deformation of the metal material, and thus producing high-quality forgings. Free forging hydraulic press is the key equipment to realize this process. It uses liquid as the working medium and transmits energy based on Pascal's principle. The core components of the hydraulic press mainly include the following: Figure 1 The slider connecting plate (1), upper anvil (2), lower anvil (4) and movable workbench (5) are shown, and the lower anvil not only connects the workpiece (3) and the movable workbench, but also bears the huge pressure applied to the workpiece by the hydraulic press through the slider connecting plate, upper anvil, etc.

[0003] However, due to the high temperatures and pressures during the forging process, the lower anvil is prone to deformation and damage, which significantly impacts the quality of the forgings and production efficiency. Furthermore, with the increasingly complex forging process requirements, the lower anvil must not only move forward and backward with the moving worktable, but also be able to rotate axially. However, the traditional hydraulic forging press typically has a three-beam, four-column structure, which limits the structural space of the entire lower anvil. Within this limited structural space, the lower anvil struggles to meet the diverse operational requirements of cooling and rotation, leading to damage to the lower anvil and even the hydraulic transmission device at high temperatures.

[0004] Therefore, in order to solve the problems that the existing lower anvil is easily damaged by high temperature deformation and difficult to rotate in a limited space, it is now necessary to provide a lower anvil device for a free forging hydraulic press. Utility Model Content

[0005] The utility model aims to provide a lower anvil device for a free forging hydraulic press, so as to solve the problems that the lower anvil is easily damaged by high temperature deformation and cannot realize functions such as rotation and movement.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a compact lower anvil with cooling and rotation functions, which can be applied to existing hydraulic forging presses. Specifically, it provides a lower anvil device for a free forging hydraulic press, including an anvil, a rotating disk is provided above the anvil; a mounting hole is provided in the center of the anvil, a hydraulic motor is provided in the mounting hole, and a connecting shaft is provided above the hydraulic motor; a first slide is provided on the periphery of the mounting hole, a plurality of elastic components are provided in the first slide, and a sliding component is provided above the elastic component; a connecting pipe connected to the surface of the anvil is provided above the mounting hole; a cooling input pipe is provided in the middle of the anvil, and the cooling input pipe is connected to the connecting pipe; a through hole is provided in the center of the rotating disk, and the upper part of the connecting shaft is placed in the through hole; a second slide is provided on the periphery of the through hole, the second slide is arranged opposite to the first slide, and the upper part of the sliding component is arranged in the second slide.

[0008] The principles and advantages of this solution are:

[0009] Since forging hydraulic presses generally have a three-beam and four-column structure, the structural space of the entire lower anvil is restricted, and the expansion space of the lower anvil is limited. As the requirements for forging technology continue to increase, the workpiece needs to be rotated and moved during forging, which makes the operation process difficult to control accurately and poses certain safety risks. As the forging technology continues to improve, the lower anvil is easily deformed and damaged by high temperature due to the influence of the operating environment of the forging equipment. If you want to achieve functions such as cooling, rotation, and movement, you can only use external transmission mechanisms or cooling equipment. As a result, it takes up a large space, is inconvenient to operate, and is not flexible enough to control, making it difficult to achieve effective forging operations.

[0010] This solution designs a lower anvil structure with a more compact structure and integrated cooling and rotation functions within the limited lower anvil structure space, which reduces space occupancy, increases the service life and forging efficiency of the lower anvil, improves operability and controllability, and reduces production safety risks.

[0011] In this solution, the lower anvil is designed to be composed of two parts, an anvil and a rotating disk, and a hydraulic motor is arranged inside the anvil, which does not take up space and can directly drive the rotating disk to rotate on the anvil, thereby realizing the rotation function. An elastic component and a sliding component are arranged on the anvil through a slide groove to realize the relative rotation of the anvil and the rotating disk, thereby reducing the damage caused by rotational friction. At the same time, the elastic component can also buffer the pressure borne by the sliding component, thereby increasing the service life of the sliding component. The connecting pipe and the cooling input pipe are respectively connected to the mounting hole, thereby realizing the cooling function without taking up volume space, cooling the anvil and the hydraulic motor, effectively reducing deformation damage caused by high temperature, and increasing the service life of the equipment. In addition, this solution has a simple structure, a compact design, and occupies little space. It can be applied to various hydraulic equipment and spatial structures, has a wide range of uses, is easy to install and disassemble, effectively improves the overall equipment utilization efficiency, and reduces costs.

[0012] Furthermore, the elastic component includes a spring assembly; the sliding component includes a lower bearing seat, a plurality of steel balls and an upper bearing seat, the lower bearing seat is arranged on the spring assembly, the steel balls are arranged on the lower bearing seat, and the upper bearing seat is arranged on the steel balls.

[0013] Furthermore, the mounting hole is a stepped hole, including a built-in cavity at the bottom and a threaded hole above the built-in cavity; the hydraulic motor is disposed in the built-in cavity, and the connecting shaft is disposed in the threaded hole.

[0014] Furthermore, a hydraulic channel is provided on one side of the mounting hole, and oil inlet and outlet pipelines are provided in the hydraulic channel, and the oil inlet and outlet pipelines are connected to the hydraulic motor.

[0015] Furthermore, the upper bearing seat is arranged in the second sliding groove.

[0016] Furthermore, the communication pipe is arranged above the built-in cavity and is communicated with the built-in cavity; the cooling input pipe is communicated with the built-in cavity.

[0017] Furthermore, a clamping groove is provided on the periphery of the through hole, a chuck is provided in the clamping groove, and the chuck is provided on the connecting shaft.

[0018] Furthermore, the anvil is a convex table structure, and the rotating disk is a concave table structure that matches the anvil.

[0019] Furthermore, an air joint is provided on the outside of the cooling input pipe, and the air joint is provided on one side of the anvil.

[0020] Furthermore, a cover is provided above the card slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the local structure of the core components of the hydraulic press in the prior art;

[0022] Figure 2 This is a structural schematic diagram of a lower anvil device for a free forging hydraulic press in the utility model;

[0023] Figure 3 This is a schematic diagram of the anvil structure of a lower anvil device for a free forging hydraulic press in the utility model;

[0024] Figure 4 This is a schematic structural diagram of a rotating disk of a lower anvil device for a free forging hydraulic press in the utility model;

[0025] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The figure marks in the drawings of the specification include: slider connecting plate 1, upper anvil 2, workpiece 3, lower anvil 4, movable workbench 5, rotating disk 6, connecting bolt 7, upper bearing seat 8, steel ball 9, blind cover 10, chuck 11, connecting shaft 12, hydraulic motor 13, cooling input pipe 14, air joint 15, hydraulic channel 16, inlet and outlet oil pipelines 17, blocking plate 18, connecting pipe 19, elastic component 20, lower bearing seat 21, anvil 22, mounting hole 23, first slide groove 24, second slide groove 25, spring bolt seat 26, spring 27, spring cover 28, spring nut 29, connecting screw hole 30.

[0028] Example 1

[0029] This embodiment is basically as shown in the attached Figure 2 Shown is a lower anvil assembly for a hydraulic free forging press. This assembly incorporates cooling and rotational capabilities within a limited space, extending the service life of the lower anvil and hydraulic transmission assembly to meet increasingly complex forging requirements. The lower anvil assembly comprises an anvil 22, which is generally cylindrical in structure. A rotating disk 6, which is generally circular in structure, is positioned above the anvil 22. In this embodiment, the anvil 22 is a convex table structure, while the rotating disk 6 is a concave table structure that mates with the anvil 22, allowing the rotating disk 6 to be securely mounted on the anvil 22.

[0030] A mounting hole 23 is provided at the center of the anvil 22, within which a hydraulic motor 13 is mounted, and a connecting shaft 12 is mounted above the hydraulic motor 13. In this embodiment, the mounting hole 23 is a stepped hole comprising a built-in cavity provided at the bottom of the anvil 22 and a threaded hole provided above the built-in cavity. The hydraulic motor 13 is mounted within the built-in cavity, ensuring normal operation of the hydraulic motor 13 without occupying excessive volume. The connecting shaft 12 is provided within the threaded hole, and the anvil 22 is rotatably connected to the rotating disk 6 via the connecting shaft 12. In this embodiment, the connecting shaft 12 is connected using a spline shaft.

[0031] A hydraulic channel 16 is also horizontally opened on one side of the mounting hole 23. The hydraulic channel 16 is connected to the built-in cavity. Inlet and outlet oil pipelines 17 are installed in the hydraulic channel 16. The inlet and outlet oil pipelines 17 are connected to the hydraulic motor 13 to provide power for the hydraulic motor 13. A blocking plate 18 is also provided on the outside of the hydraulic channel 16. The oil pipeline can be blocked by the blocking plate 18 when not in use.

[0032] A cooling input pipe 14 is horizontally opened in the middle of the anvil 22. The cooling input pipe 14 is arranged above the hydraulic channel 16, and the cooling input pipe 14 is connected to the built-in cavity. An air connector 15 is provided at the outer end of the cooling input pipe 14. The air connector 15 is installed on one side of the anvil 22. High-pressure compressed air is connected through the air connector 15, thereby sending the compressed air from the cooling input pipe 14 into the built-in cavity.

[0033] At the same time, a communication pipe 19 connected to the surface of the anvil 22 is opened above the mounting hole 23. In this embodiment, the communication pipe 19 is vertically arranged above the built-in cavity, and connects the surface of the anvil 22 with the built-in cavity. The cooling input pipe 14 can be connected to the communication pipe 19 through the built-in cavity, so that the compressed air is sent into the surface of the anvil 22 through the communication pipe 19, and the temperature between the anvil 22 and the rotating disk 6 is cooled, thereby reducing the temperature of the lower anvil and reducing the impact of high temperature. At the same time, cooling is achieved in a compact space structure, thereby increasing the service life of the lower anvil.

[0034] As attached Figure 3 As shown, a first slide groove 24 in a circular ring structure is provided around the outer periphery of the mounting hole 23. Figure 2 Only the left half of the structure is shown. A plurality of elastic components 20 are installed at the bottom of the first chute 24, and a sliding component is installed above the elastic component 20. In this embodiment, the elastic component 20 adopts a spring assembly, and a total of 32 spring assemblies are evenly arranged around the bottom of the first chute 24. Figure 5As shown, the spring assembly includes a spring bolt seat 26, a spring 27, a spring cover 28, and a spring nut 29, which are installed in sequence from top to bottom. A sliding assembly is installed above the elastic component 20, so that the sliding assembly can move up and down with the elastic component 20 in the first slide groove 24. In this embodiment, the sliding assembly includes a lower bearing seat 21, a plurality of steel balls 9, and an upper bearing seat 8. The lower bearing seat 21 is installed on the spring assembly and located in the first slide groove 24. The steel balls 9 are arranged on the lower bearing seat 21, and the upper bearing seat 8 is arranged on the steel balls 9. In this embodiment, 64 steel balls 9 are used, which are evenly arranged between the lower bearing seat 21 and the upper bearing seat 8, so that the upper bearing seat 8 and the lower bearing seat 21 can rotate relative to each other through the steel balls 9. In this embodiment, the length of the elastic component 20 is adjusted by the spring nut 29 to ensure that in the free state, the spring lifts the lower bearing seat 21, the steel ball 9, and the upper bearing seat 8, thereby lifting the rotating disk 6, so that there is a gap of 3-5mm between the anvil 22 and the rotating disk 6, so that the rotating disk 6 can be rotated through the steel ball 9 to reduce relative friction and ensure the stability of rotation.

[0035] A through hole is provided in the center of the rotating disk 6, wherein the upper portion of the connecting shaft 12 is placed in the through hole, thereby rotatably connecting the anvil 22 to the rotating disk 6. A slot is also provided on the upper periphery of the through hole, in which a chuck 11 is installed. The chuck 11 is sleeved above the connecting shaft 12. In this embodiment, the chuck 11 is a coupling chuck, thereby connecting the rotating disk 6 to the hydraulic motor 13 through the coupling chuck and the spline shaft. The hydraulic motor 13 drives the rotating disk 6 to rotate, thereby achieving the rotation requirement of the lower anvil. A blind cover 10 is also provided above the blind cover, which covers the through hole in the center of the rotating disk 6 to ensure safety.

[0036] As attached Figure 4 As shown, a second chute 25 is further defined around the through hole. The second chute 25 is disposed opposite the first chute 24. A bolt hole 30 for mounting the connecting bolt 7 is disposed at the bottom of the second chute 25. The upper portion of the sliding assembly is mounted within the second chute 25. Specifically, the upper bearing seat 8 of the sliding assembly is mounted within the second chute 25 via the connecting bolt 7, allowing the upper bearing seat 8 to cooperate with the lower bearing seat 21 to achieve frictional rotation.

[0037] The specific implementation process is as follows:

[0038] As attached Figure 1 To the attached Figure 4As shown, during the forging process, when the upper anvil 2 transmits pressure to the workpiece 3, the workpiece 3 transmits the pressure to the rotating disk 6. At this time, the rotating disk 6 presses down on the steel ball 9 under the action of pressure, and the steel ball 9 presses down on the lower bearing seat 21, thereby compressing and moving the elastic component 20 below. When the rotating disk 6 contacts the anvil 22, the pressure is transmitted to the ground through the movable workbench 5 below, completing the forging process. The huge pressure acts as a buffer for the sliding component, preventing damage to the sliding component due to pressure drop during forging, and effectively increasing its service life.

[0039] After forging is completed, the elastic component 20 lifts the lower bearing seat 21 by the pre-tightened spring force, and the lower bearing seat 21 lifts the steel ball 9, the upper bearing seat 8, and the rotating disk 6 in turn. At this time, the rotating disk 6 is not in contact with the anvil 22, thereby achieving reset.

[0040] When rotation is required, the hydraulic inlet and outlet oil pipelines 17 transmit high-pressure oil to the hydraulic motor 13, the hydraulic motor 13 rotates, and in turn drives the connecting shaft 12 and the chuck 11 to rotate, thereby driving the rotating disk 6 to rotate along the axial direction of the steel ball 9, realizing the rotation of the workpiece 3.

[0041] When cooling is required during the forging process, 0.8MPa high-pressure air is connected through the air connector 15, enters the built-in cavity through the cooling input pipe 14, and enters the interior of the tooling through the connecting pipe 19, and then spreads along the connecting pipe 19 and various assembly gaps to the positions of various parts such as the steel ball 9 and the rotating disk 6. The principle of compressed air high pressure to low pressure cooling and the temperature difference between the air and the high-temperature anvil are used to take away the heat of the device, thereby achieving cooling and lubrication capabilities.

[0042] In this embodiment, by providing a structure in which the anvil and the rotating disk are rotatably connected to each other, the rotation function of the lower anvil is increased. Meanwhile, the hydraulic motor 13 is installed within the anvil, resulting in a more compact structure that does not occupy excess space. This structure is adaptable to various hydraulic equipment and spatial structures, enabling the rotation of the lower anvil to be achieved within a limited structural layout, thereby improving the forging capacity of the equipment. Furthermore, the structure of the elastic component 20 prevents damage to the sliding component during forging, thereby increasing the service life of the sliding component. Furthermore, the use of the steel ball 9 as an intermediate rotating connector reduces hard friction during rotation, further increasing service life.

[0043] In this embodiment, the cooling function of the lower anvil and the equipment is cleverly achieved through the internally arranged cooling pipe. Without taking up extra space and increasing the volume of the equipment, the high-temperature lower anvil is cooled, effectively improving the service life of the anvil and the hydraulic motor.

[0044] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A lower anvil device for a free forging hydraulic press, characterized in that: It includes an anvil, a rotating disk is provided above the anvil; a mounting hole is provided in the center of the anvil, a hydraulic motor is provided in the mounting hole, and a connecting shaft is provided above the hydraulic motor; a first slide groove is provided on the periphery of the mounting hole, a plurality of elastic components are provided in the first slide groove, and a sliding component is provided above the elastic component; a connecting pipe connected to the surface of the anvil is provided above the mounting hole; a cooling input pipe is provided in the middle of the anvil, and the cooling input pipe is connected to the connecting pipe; a through hole is provided in the center of the rotating disk, and the upper part of the connecting shaft is placed in the through hole; a second slide groove is provided on the periphery of the through hole, the second slide groove is arranged opposite to the first slide groove, and the upper part of the sliding component is arranged in the second slide groove.

2. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: The elastic component includes a spring assembly; the sliding component includes a lower bearing seat, a plurality of steel balls and an upper bearing seat, the lower bearing seat is arranged on the spring assembly, the steel balls are arranged on the lower bearing seat, and the upper bearing seat is arranged on the steel balls.

3. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: The mounting hole is a stepped hole, comprising a built-in cavity at the bottom and a threaded hole above the built-in cavity; the hydraulic motor is disposed in the built-in cavity, and the connecting shaft is disposed in the threaded hole.

4. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: A hydraulic channel is further provided on one side of the mounting hole. Oil inlet and outlet pipelines are provided in the hydraulic channel. The oil inlet and outlet pipelines are connected to the hydraulic motor.

5. The lower anvil device for a free forging hydraulic press according to claim 2, characterized in that: The upper bearing seat is arranged in the second sliding groove.

6. The lower anvil device for a free forging hydraulic press according to claim 3, characterized in that: The communication pipe is arranged above the built-in cavity and communicates with the built-in cavity; the cooling input pipe is communicated with the built-in cavity.

7. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: A clamping groove is also provided on the periphery of the through hole, a chuck is provided in the clamping groove, and the chuck is provided on the connecting shaft.

8. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: The anvil is a convex table structure, and the rotating disk is a concave table structure matched with the anvil.

9. The lower anvil device for a free forging hydraulic press according to claim 1, characterized in that: An air joint is provided on the outside of the cooling input pipe, and the air joint is provided on one side of the anvil.

10. The lower anvil device for a free forging hydraulic press according to claim 7, characterized in that: A blind cover is also provided above the card slot.

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