Quick anvil replacing device of free forging press

Abstract

The invention relates to the technical field of forging equipment, and discloses a free forging press quick anvil replacing device which comprises a transmission bevel gear assembly, a handle is arranged on one side of the transmission bevel gear assembly, the transmission bevel gear assembly comprises a bevel gear shaft, a transmission bevel gear is arranged on the side, away from the handle, of the bevel gear shaft, and the handle drives the bevel gear shaft and the transmission bevel gear to rotate; a rotating bevel gear assembly is arranged on the other side of the transmission bevel gear assembly and comprises a rotating bevel gear and a rotating shaft. The rotating bevel gear is meshed with the transmission bevel gear; a connecting sleeve is connected to the lower portion of the rotating bevel gear assembly and comprises a hook head plate and a rotating cavity, and the hook head plate is located in the rotating cavity and connected with the tail end of the rotating shaft. Under the traction of the transmission bevel gear, the rotating bevel gear, the rotating shaft and the hook head plate sequentially rotate, and when the hook head plate rotates to a preset angle, the hook head plate gets rid of the constraint of the connecting sleeve, so that the upper anvil is disassembled. The upper anvil replacement efficiency and replacement difficulty can be improved, and the labor intensity can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of forging equipment, and in particular to a quick anvil changing device for a free forging press. Background Art

[0002] Free forging refers to a processing method that uses impact force or pressure to make metal deform freely in all directions between the upper and lower anvil surfaces to obtain forgings with the desired shape, size and certain mechanical properties without any restrictions.

[0003] A free forging press is a forging machine that uses liquid as the working medium and is made according to Pascal's principle to transfer energy. Generally, the moving slider, slider connecting plate, upper anvil and other structures generate movement and accumulate kinetic energy, which is applied to the forging in a very short time to make it plastically deformed and complete various forging processes. Figure 1 As shown, a general hydraulic press (a type of free forging press) is composed of an upper anvil, an upper anvil, a forging, a lower anvil, and a lower anvil when working. The upper anvil is an important part that connects the press slide and the lower anvil and can withstand and transmit the kinetic energy of the press.

[0004] In traditional forging equipment, the upper anvil seat and the upper anvil are connected by dovetails and fastened with wedges. When replacing the upper anvil with this connection method, the wedge needs to be removed first, which usually requires the cooperation of multiple people and the assistance of a crane. The wedge is removed by using a lifting hammer, that is, the end face of the wedge is struck with a hammer to gradually loosen it and replace the anvil. After replacing the new upper anvil, the wedge needs to be knocked back into the space between the new upper anvil and the anvil seat with a hammer. This operation takes a long time to replace the upper anvil, is labor-intensive, and inefficient, and will damage the upper anvil seat and the upper anvil. With the rapid development of forging technology, multiple upper anvils are often required to complete different processes in the forging of the same product. The traditional method of disassembling and assembling the upper anvil can no longer meet the time-sensitive process requirements of hot working.

[0005] In addition, if Figure 2 As shown, the three-beam and four-column structure of the forging hydraulic press restricts the limited structural space of the entire upper anvil, further increasing the difficulty of replacing the upper anvil. Summary of the invention

[0006] The present invention aims to provide a quick anvil changing device for a free forging press, so as to improve the efficiency and difficulty of upper anvil replacement and reduce the labor intensity.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a quick anvil changing device for a free forging press, the free forging press comprises an upper anvil, an upper anvil, a lower anvil and a lower anvil, the upper anvil is located directly below the upper anvil; comprises a plurality of transmission bevel gear assemblies, the transmission bevel gear assembly is located in the inner cavity of the upper anvil, one side of the transmission bevel gear assembly is connected to a handle, and the handle is located on the outside of the upper anvil; the transmission bevel gear assembly comprises a bevel gear shaft, a transmission bevel gear is provided on the side of the bevel gear shaft away from the handle, the handle is used to provide power to drive the bevel gear shaft to rotate, and under the drive of the bevel gear shaft, the transmission bevel gear rotates accordingly; the other side of the transmission bevel gear assembly is vertically connected to a rotating bevel gear assembly, and the rotating bevel gear assembly is located in the inner cavity of the upper anvil; the rotating bevel gear assembly comprises A rotating bevel gear and a rotating shaft passing through the rotating bevel gear; the rotating bevel gear is located in the middle position of the rotating shaft; the upper end of the rotating bevel gear is meshed with the lower end of the transmission bevel gear; the connecting sleeve is connected to the bottom of the rotating bevel gear assembly, the connecting sleeve is located in the inner cavity of the upper anvil, the connecting sleeve includes a hook head plate and a rotating cavity for the hook head plate to rotate, the hook head plate is located in the rotating cavity and is connected to the tail end of the rotating shaft; under the traction of the transmission bevel gear, the rotating bevel gear meshed with it rotates accordingly, and the rotation of the rotating bevel gear drives the rotating shaft to rotate, and finally the rotating shaft drives the hook head plate to rotate, and when the hook head plate rotates to a preset angle, the hook head plate will get rid of the constraint of the connecting sleeve and disengage from the upper end of the connecting sleeve, thereby realizing the disassembly of the upper anvil.

[0008] The principle of this scheme is: in actual application, the handle will drive the transmission bevel gear assembly, the rotating bevel gear assembly and the connecting sleeve to rotate in turn, thereby realizing the disassembly of the upper anvil. Specifically, the operator turns the handle to provide power to drive the bevel gear shaft to rotate, and the bevel gear shaft drives the transmission bevel gear to rotate, and drives the rotating bevel gear meshing with the transmission bevel gear to rotate, and then drives the rotating bevel gear to rotate, and then the rotating bevel gear further drives the rotating shaft, and finally the rotating shaft drives the hook head plate to rotate, and when the hook head plate rotates to a preset angle, the hook head plate will get rid of the restraint of the connecting sleeve, thereby realizing the disassembly of the upper anvil.

[0009] The advantages of this solution are: (1) This solution breaks the technical prejudice of traditional technology that anvil replacement relies on wedge iron disassembly and assembly and the assistance of heavy equipment. This solution uses relatively simple mechanical transmission movement to achieve efficient and reliable upper anvil disassembly and assembly operations, greatly reducing the disassembly and assembly time of the upper anvil and the downtime of the free forging press, thereby improving production efficiency.

[0010] (2) In this solution, the entire device is installed in the inner cavity of the upper anvil and the upper anvil seat, and the upper anvil and the upper anvil seat are connected by a hook head plate, which simplifies the installation and disassembly methods between the upper anvil and the upper anvil seat and reduces the complicated assembly steps, thereby shortening the overall installation time and disassembly time, and greatly improving the efficiency of anvil replacement.

[0011] (3) This solution does not require additional energy (assisted by gas or hydraulic systems), which reduces production and operating costs, and will not cause safety and quality accidents caused by the fall of the upper anvil due to changes in external power.

[0012] (4) This solution no longer requires the use of tools such as a hammer. In contrast, disassembly is performed by turning the handle, which reduces the labor intensity and workload of traditional disassembly and assembly of the upper anvil, while not damaging the quality of the upper anvil seat and the upper anvil.

[0013] (5) This solution uses a handle to drive the bevel gear shaft and the transmission bevel gear, and then uses a linkage design to drive the rotating shaft and the hook head plate to rotate through the rotating bevel gear, thereby achieving rapid disassembly and installation of the upper anvil, avoiding the disassembly and installation of the wedge iron in the traditional method, and simplifying the operation process.

[0014] (6) Avoids the safety risks caused by the use of heavy tools and equipment and improves the safety of operations.

[0015] (7) The transmission bevel gear assembly and the rotating bevel gear assembly are integrated in the inner cavity of the upper anvil, and the connecting sleeve is located in the inner cavity of the upper anvil. The structure is compact and easy to maintain.

[0016] Preferably, as an improvement, the preset angle is 90 degrees.

[0017] Beneficial effects: The setting of the preset angle enables the operator to complete the disassembly action quickly and accurately without repeated adjustment or confirmation of the position; and ensures that each operation can achieve the expected effect, so that the hook head plate can be accurately separated from the connecting sleeve, avoiding looseness or incomplete separation due to uncertain angles, thereby improving the safety and reliability of the operation.

[0018] Preferably, as an improvement, the transmission bevel gear assembly also includes a bevel gear shaft mounting cylinder, one side of the bevel gear shaft mounting cylinder is connected to a transmission bearing seat, and the other side thereof is connected to the transmission bevel gear; a plurality of bearing mounting holes are provided inside the bevel gear shaft mounting cylinder, and the bearing mounting holes are located at the ends of both sides of the bevel gear shaft mounting cylinder, and the bearing mounting holes are provided with a plurality of first bearings for assisting rotation, and the bevel gear shaft is embedded in the bevel gear shaft mounting cylinder through the first bearing and passes through the bevel gear shaft mounting cylinder, and the center of the transmission bearing seat passes through the bevel gear shaft and presses part of the first bearing inward.

[0019] Beneficial effects: The first bearing ensures the precise alignment between the bevel gear shaft and the bevel gear shaft mounting cylinder, reducing the problem of inaccurate operation caused by assembly errors; and the efficient rotation support provided makes power transmission smoother, reduces energy loss, and improves overall work efficiency; the transmission bearing seat presses the first bearing inward to ensure that the bevel gear shaft will not loosen or shift during operation.

[0020] Preferably, as an improvement, the length of the bevel gear shaft in the X-axis direction is longer than the length of the bevel gear shaft mounting cylinder in the X-axis direction, and the excess end is used to connect the handle.

[0021] Beneficial effects: The protruding portion provides sufficient space for the handle installation, so that the operator can conveniently rotate the handle, which helps to provide better torque transmission, thereby driving the entire transmission assembly (ie, the transmission bevel gear assembly and the rotating bevel gear assembly).

[0022] Preferably, as an improvement, a plurality of second bearings are provided on both sides of the rotating shaft, a rotating bearing seat is provided at the top end of the rotating shaft, the center of the rotating bearing seat passes through the rotating shaft and presses part of the outer diameter of the second bearing.

[0023] Beneficial effects: The efficient rotation support provided by the second bearing makes power transmission smoother, reduces energy loss, and improves overall work efficiency; the center of the rotating bearing seat passes through the rotating shaft and firmly presses part of the outer diameter of the second bearing, ensuring that the rotating shaft and the second bearing will not loosen or shift during operation, thereby enhancing reliability and stability.

[0024] Preferably, as an improvement, a screw is provided at the tail end of the rotating shaft, and the screw is used to connect the rotating shaft and the hook head plate.

[0025] Beneficial effects: The screw connection can accurately adjust the relative position between the rotating shaft and the hook head plate, ensuring that they can be accurately aligned, reducing inaccurate operation problems caused by assembly errors, and ensuring that the connection between the hook head plate and the rotating shaft is firm to avoid looseness; in addition, the screw connection makes the disassembly and assembly between the rotating shaft and the hook head plate easier and faster.

[0026] Preferably, as an improvement, the connecting sleeve is provided with a through hole for the rotating shaft to pass through and a plurality of mounting holes for mounting the connecting sleeve, the mounting holes are evenly distributed on the periphery of the connecting sleeve, and the through hole is located above the center of the connecting sleeve.

[0027] Beneficial effects: The design of the mounting holes makes the installation and removal of the connecting sleeve easier and quicker, and the evenly distributed design prevents the connecting sleeve from loosening or shifting during operation; the position design of the through-holes ensures that the rotating shaft can accurately pass through and maintain the correct alignment, reducing the problem of inaccurate operation caused by assembly errors.

[0028] Preferably, as an improvement, the rotating chamber is located below the through hole.

[0029] Beneficial effects: The position design of the rotating cavity can adjust the position of the hook head plate. Through the reasonable layout of the rotating cavity and the through hole, the overall size of the device can be reduced without sacrificing performance, making it more suitable for installation in a limited space.

[0030] Preferably, as an improvement, the cross-section of the through hole is smaller than the cross-section of the hook head plate, and the longitudinal section of the through hole is smaller than the longitudinal section of the hook head plate; the cross-section of the hook head plate is smaller than the cross-section of the rotating cavity, and the longitudinal section of the hook head plate is smaller than the longitudinal section of the rotating cavity.

[0031] Beneficial effects: the cross-section of the through hole is smaller than that of the hook head plate, ensuring that the hook head plate will not slip out of the through hole or loosen during operation, thereby enhancing the stability of the device; the longitudinal section of the through hole is smaller than that of the hook head plate, so that the hook head plate can be pulled out of the through hole during rotation; the cross-section of the hook head plate is smaller than the cross-section of the rotating cavity, and the longitudinal section of the hook head plate is smaller than the longitudinal section of the rotating cavity; the hook head plate can rotate freely in the rotating cavity without hindrance, while ensuring that the hook head plate and the rotating cavity have sufficient supporting area, enhancing the overall bearing capacity, and preventing the hook head plate from falling off during operation.

[0032] Preferably, as an improvement, the cross-section of the hook head plate is square.

[0033] Beneficial effects: Compared with a circle or other shape, the square shape usually has greater bending and torsional rigidity, and can withstand greater loads without being easily deformed or damaged; it ensures that the hook head plate moves along a predetermined path during rotation, avoiding unnecessary swinging or deviation, and improving operational stability; at the same time, the square design is usually more intuitive and easy to install and disassemble quickly.

[0034] The beneficial effects of this solution are as follows: (1) Through handle operation and mechanical linkage design, the upper anvil can be quickly replaced, which significantly improves the efficiency of anvil replacement.

[0035] (2) In this solution, the entire device is installed in the inner cavity of the upper anvil and the upper anvil seat, and the upper anvil and the upper anvil seat are connected by a hook head plate, which simplifies the installation and disassembly methods between the upper anvil and the upper anvil seat and reduces the complicated assembly steps, thereby shortening the overall installation time and disassembly time, and greatly improving the efficiency of anvil replacement.

[0036] (3) The coordinated arrangement of the hook head plate and the connecting sleeve enables the hook head plate to provide a stable connection, thereby enhancing the bonding strength between the upper anvil and the upper anvil seat, improving the stability of the overall structure, and helping to more evenly distribute the force applied to the contact area, thereby reducing local stress concentration and extending the service life of the hook head plate.

[0037] (4) The operation is simple and can be completed by one person, which reduces the difficulty of operation and labor costs. At the same time, it is not easy to maintain and overhaul, which reduces the need for additional maintenance caused by improper assembly or looseness, reduces long-term maintenance costs, and has significant economic benefits.

[0038] (5) The simple disassembly and installation method meets the requirement of using multiple upper anvils to complete different processes in the forging of the same product. It can quickly adapt to different forging processes, improve the flexibility of the production line, reduce the downtime caused by replacing the upper anvil, improve the overall production efficiency, and increase the return on investment, with significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a partial schematic diagram of a forging press body according to an embodiment of the present invention.

[0040] Figure 2 It is a schematic structural diagram of a forging press body according to an embodiment of the present invention.

[0041] Figure 3 A schematic structural diagram of a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0042] Figure 4 A schematic structural diagram of a transmission bevel gear assembly in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0043] Figure 5 A schematic structural diagram of a rotating bevel gear assembly in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0044] Figure 6 A schematic diagram of the structure of a connecting sleeve in a quick anvil changing device for a free forging press provided by an embodiment of the present invention Figure 1 .

[0045] Figure 7 A schematic diagram of the structure of a connecting sleeve in a quick anvil changing device for a free forging press provided by an embodiment of the present invention Figure 2 .

[0046] Figure 8 A schematic diagram of the structure of a connecting sleeve in a quick anvil changing device for a free forging press provided by an embodiment of the present invention Figure 3 .

[0047] Fig. 9 A top view of a connecting sleeve in a quick anvil changing device for a free forging press provided by an embodiment of the present invention.

[0048] Fig.10 A schematic structural diagram of an upper anvil in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0049] Fig.11 A top view of an upper anvil in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0050] Fig.12 A schematic structural diagram of an upper anvil in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0051] Fig.13 A top view of an upper anvil in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0052] Fig.14 A schematic structural diagram of the removal of a hook plate in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0053] Fig.15 A structural schematic diagram of the installation of a hook head plate in a quick anvil changing device of a free forging press provided by an embodiment of the present invention.

[0054] Fig.16 A top view of a hook plate in a quick anvil changing device for a free forging press provided in an embodiment of the present invention.

[0055] Fig.17 A schematic structural diagram of a hook plate in a quick anvil changing device for a free forging press provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The following is further described in detail through specific implementation methods:

[0057] The figure marks in the drawings of the specification include: upper anvil 1, upper anvil 2, workpiece 3, lower anvil 4, lower anvil 5, handle 6, transmission bevel gear assembly 7, rotating bevel gear assembly 8, hook head plate 9, connecting sleeve 10, bevel gear shaft 11, transmission bearing seat 12, first clamping bolt 13, first bearing 14, bevel gear shaft mounting cylinder 15, transmission bevel gear 16, rotating bearing seat 17, second clamping bolt 18, round nut 19, rotating bevel gear 20, second bearing 21, rotating shaft 22, screw 23, mounting hole 24, through hole 25, rotating cavity 26, transmission mounting cavity 27, rotating mounting cavity 28, connecting sleeve mounting cavity 29.

[0058] The free forging press comprises an upper anvil 1 , an upper anvil 2 , a lower anvil 4 and a lower anvil 5 , wherein the upper anvil 2 is located directly below the upper anvil 1 .

[0059] The embodiment is basically as follows Figure 3 As shown: a free forging press quick anvil changing device, including a handle 6, a transmission bevel gear assembly 7, a rotating bevel gear assembly 8 and a connecting sleeve 10.

[0060] Its transmission bevel gear assembly 7 is symmetrically installed in the inner cavity of the upper anvil 1, and a handle 6 is connected to one side of the transmission bevel gear assembly 7, and the handle 6 is located on the outer side of the upper anvil 1; the transmission bevel gear assembly 7 includes a bevel gear shaft 11, and a transmission bevel gear 16 is installed on the side away from the bevel gear shaft 11, and the handle 6 is used to provide power to drive the bevel gear shaft 11 to rotate, and under the traction of the bevel gear shaft 11, the transmission bevel gear 16 rotates accordingly; the other side of the transmission bevel gear assembly 7 is vertically connected to a rotating bevel gear assembly 8, and the rotating bevel gear assembly 8 is located in the inner cavity of the upper anvil 1; the rotating bevel gear assembly 8 includes a rotating bevel gear 20 and a rotating shaft 22 passing through the rotating bevel gear 20, the rotating bevel gear 20 is located in the middle of the rotating shaft 22, and its rotating bevel gear 2 0 is in contact with and meshed with the lower end of the transmission bevel gear 16; a coupling sleeve 10 is connected to the bottom of the rotating bevel gear assembly 8, and the coupling sleeve 10 is located in the inner cavity of the upper anvil 2, and the coupling sleeve 10 includes a hook head plate 9 and a rotating cavity 26 for the hook head plate 9 to rotate, and the hook head plate 9 is located in the rotating cavity 26 and is connected to the tail end of the rotating shaft 22; under the traction of the transmission bevel gear 16, the rotating bevel gear 20 meshing therewith rotates accordingly, and the rotation of the rotating bevel gear 20 will further drive the rotating shaft 22 to rotate, and finally the rotating shaft 22 drives the hook head plate 9 to rotate, and when the hook head plate 9 rotates to a preset angle, the hook head plate 9 will get rid of the restraint of the coupling sleeve 10 and detach from the upper end of the coupling sleeve 10, thereby realizing the disassembly of the upper anvil 2.

[0061] Specifically, the handle 6 is located on both sides of the upper anvil 1 and is directly connected to the transmission bevel gear assembly 7. The operator can generate kinetic energy by rotating the handle 6, and the kinetic energy is transmitted through the transmission bevel gear assembly 7 to drive the rotating bevel gear assembly 8 and the connecting sleeve 10 to rotate, thereby realizing the operation of the entire device. In this embodiment, the direction of rotation of the handle 6 (clockwise or counterclockwise) and the angle of rotation can be determined according to the module and number of teeth of the designed gear. Specifically, in this embodiment, when the handle 6 is installed and debugged, the handle 6 is rotated to rotate the hook plate 9 to a position parallel to the length direction of the upper anvil 2, and the position of the handle 6 at this time is set to the starting position, and the mark and limit are made; the handle 6 is rotated clockwise to rotate the hook plate 9 to a position perpendicular to the length direction of the upper anvil 1, and the position of the handle 6 at this time is set to the end position, and the mark and limit are made. The rotation angle is usually 60-120 degrees. After debugging and setting the limit and mark, the handle 6 can only rotate between the starting point and the end point, which improves the accuracy of each control of the handle 6.

[0062] like Figure 4 As shown, the transmission bevel gear assembly 7 includes a bevel gear shaft mounting cylinder 15 and a bevel gear shaft 11. The bevel gear shaft mounting cylinder 15 is provided with a plurality of bearing mounting holes. The bearing mounting holes are located at the ends of both sides of the bevel gear shaft mounting cylinder 15. A first bearing 14 is installed in the bearing mounting holes. The bevel gear shaft 11 is embedded in the bevel gear shaft mounting cylinder 15 through the first bearing 14. The first bearing 14 ensures the precise alignment between the bevel gear shaft 11 and the bevel gear shaft mounting cylinder 15, reducing the problem of inaccurate operation caused by assembly errors. At the same time, the bevel gear shaft 11 can rotate along the center line of the bevel gear shaft mounting cylinder 15 under the action of the first bearing 14. The first bearing 14 provides efficient rotation support, which makes power transmission smoother, reduces energy loss, and improves overall work efficiency. The length of the bevel gear shaft 11 in the X-axis direction is longer than the length of the bevel gear shaft mounting tube 15 in the X-axis direction. The end of the bevel gear shaft 11 that extends beyond the bevel gear shaft mounting tube 15 is used to install the handle 6. The excess portion provides sufficient space for the installation of the handle 6, allowing the operator to easily rotate the handle 6, which helps to provide better torque transmission, thereby driving the entire transmission assembly (i.e., the transmission bevel gear assembly 7 and the rotating bevel gear assembly 8).

[0063] The transmission bearing seat 12 is installed on the side of the bevel gear shaft mounting cylinder 15 close to the handle 6, and the transmission bevel gear 16 is connected to the side of the bevel gear shaft mounting cylinder 15 away from the handle 6. The first clamping bolt 13 and the first through hole for the first clamping bolt 13 to pass through are installed on the upper and lower sides of the transmission bearing seat 12. The first clamping bolt 13 passes through the first through hole to fix the entire transmission bevel gear assembly 7 in the inner cavity of the upper anvil 1; the center of the transmission bearing seat 12 passes through the bevel gear shaft 11, and presses part of the first bearing 14 inward, and the other part of the first bearing 14 is located on the rightmost side of the bevel gear shaft mounting cylinder 15. The right inner wall of the bevel gear shaft mounting cylinder 15 presses the other part of the first bearing 14 inward, and jointly ensures that the bevel gear shaft 11 will not loosen or shift during operation. The transmission cone gear is meshed with the rotating bevel gear assembly 8. Under the rotation of the bevel gear shaft 11, the transmission cone gear also rotates, thereby driving the rotation of the rotating bevel gear assembly 8. In this embodiment, four first bearings 14 are installed on the bevel gear shaft 11, and two are installed at the ends of both sides of the bevel gear shaft mounting cylinder 15; the bevel gear shaft mounting cylinder 15 is a circular steel sleeve, and its circular design helps to reduce friction and vibration and provide higher stability. The steel sleeve material has high mechanical strength and can withstand large loads without being easily deformed or damaged, as well as good wear resistance, which reduces the replacement frequency due to wear, thereby enhancing the strength and stability of the transmission bevel gear assembly 7.

[0064] like Figure 3 , Figure 5As shown, the rotating bevel gear assembly 8 includes a rotating bevel gear 20 and a rotating shaft 22 passing through the rotating bevel gear 20, wherein the rotating bevel gear 20 is located at the middle position of the rotating shaft 22. The rotating bevel gear 20 is in direct contact with the transmission bevel gear in the transmission bevel gear assembly 7 and meshes with each other. Specifically, the upper end of the rotating bevel gear 20 is in contact with the lower end of the transmission bevel gear 16 and meshes with each other. A plurality of second bearings 21 are installed on both sides of the rotating shaft 22, and a rotating bearing seat 17 is installed on the top of the rotating shaft 22. Second clamping bolts 18 and second through holes for the second clamping bolts 18 to pass through are installed on the left and right sides of the rotating bearing seat 17. The second clamping bolts 18 pass through the second through holes to fix the entire rotating bevel gear assembly 8 in the inner cavity of the upper anvil 1; the center of the rotating bearing seat 17 passes through the rotating shaft 22, and the outer diameter of part of the second bearing 21 is firmly pressed, that is, the outer diameter of the second bearing 21 at the upper end is firmly pressed to ensure that the rotating shaft 22 will not loosen or shift during operation, thereby enhancing the reliability and stability of the device, and the other part of the second bearing 21 connects the rotating shaft 22 and the upper anvil 1. Under the action of the second bearing 21, the rotating shaft 22 can rotate along the center of the second bearing 21. Usually, the rotation of the shaft requires two upper and lower bearings to complete. When the rotating bevel gear 20 rotates, it can further drive the rotation of the rotating shaft 22. In this embodiment, the number of second bearings 21 is 4, and 2 of them are installed below the rotating bearing seat 17. The second bearings 21 can assist the rotating shaft 22 to rotate along the center of the second bearings 21, effectively limiting the radial movement of the rotating shaft, thereby reducing radial runout and ensuring more stable and accurate rotation.

[0065] A screw 23 is installed at the rear end of the rotating shaft 22, and the screw 23 is used to connect the rotating bevel gear assembly 8 and the connecting sleeve 10. The relative position between the rotating bevel gear assembly 8 and the connecting sleeve 10 can be accurately adjusted through the screw 23 to ensure that they can be accurately aligned and reduce the problem of inaccurate operation caused by assembly errors. When the rotating shaft 22 rotates, it can drive the connecting sleeve 10 to rotate.

[0066] like Figure 6 , Figure 7 As shown, the connecting sleeve 10 is provided with a through hole 25 and a plurality of mounting holes 24. The mounting holes 24 are evenly distributed on the periphery of the connecting sleeve 10 and are used to fix the connecting sleeve 10 in the inner cavity of the upper anvil 2. The through hole 25 is located above the center of the connecting sleeve 10 and is used to install the rotating shaft 22, ensuring that the rotating shaft 22 can accurately pass through and maintain the correct alignment, thereby reducing the problem of inaccurate operation caused by assembly errors. A hook plate 9 and a rotating cavity 26 for the hook plate 9 to rotate are installed below the through hole 25. The hook plate 9 is horizontally installed in the rotating cavity 26, as shown in FIG. Figure 8As shown, the cross-section of the hook plate 9 is smaller than the cross-section of the rotating cavity 26, and the longitudinal section of the hook plate 9 is smaller than the longitudinal section of the rotating cavity 26, so that the hook plate 9 can rotate freely in the rotating cavity 26 without hindrance, and at the same time ensure that during operation, when the hook plate 9 contacts the rotating cavity 26, it has sufficient support area, enhances the overall bearing capacity, and makes it difficult for the hook plate 9 to fall off from the rotating cavity 26. The cross-section of the through hole 25 is smaller than the cross-section of the hook plate 9, and the longitudinal section of the through hole 25 is larger than the longitudinal section of the hook plate 9, ensuring that the hook plate 9 will not slide out of the through hole 25 or loosen during operation, and at the same time, when changing the anvil, the hook plate 9 can slide out of the through hole 25 smoothly. In this embodiment, Fig. 9 As shown, the connection sleeve 10 is a circular steel sleeve, and the number of its mounting holes 24 is 8, which can enhance the stability of the connection sleeve 10 installation and prevent the connection sleeve 10 from loosening or shifting during operation; the cross section of the through hole 25 is square, and the cross section of the rotating cavity 26 is circular. In this embodiment, the hook plate 9 is made of 42CrMo, with a quenched and tempered hardness of HRC30-35. It has good rigidity and high toughness, can effectively resist deformation, and ensures that the structure is stable when carrying heavy objects, that is, it can support the weight of the upper anvil, and ensure that the hook plate 9 will not bend or break during operation, thereby ensuring the safety and stability of the device.

[0067] The specific implementation process is as follows:

[0068] Before processing: Fig.10 , Fig.11 As shown, the left and right sides of the inner cavity of the upper anvil 1 are symmetrical along the center line of the upper anvil 1, and two groups of transmission installation cavities 27 are processed horizontally; at the same time, the central part of the inner cavity of the upper anvil 1 is symmetrical along the center line of the upper anvil 1, and two groups of rotation installation cavities 28 are processed vertically with the transmission installation cavity 27, and the chambers of the transmission installation cavity 27 and the rotation installation cavity 28 are interconnected according to certain center requirements. The center distance between adjacent rotation installation cavities 28 is 300mm. Fig.12 , Fig.13 As shown, the upper end of the inner cavity of the upper anvil 2 is symmetrically processed with two sets of connecting sleeve installation cavities 29 along the center line of the upper anvil 1, and the connecting sleeve installation cavity 29 is located directly below the rotating installation cavity 28. The spacing between adjacent connecting sleeve installation cavities 29 is consistent with the center distance of the anvil rotating installation cavity 28, which is 300m.

[0069] Two groups of transmission bevel gears 16 need to be installed in the transmission mounting cavity 27 of the upper anvil 1 respectively, that is, the first clamping bolt 13 of the transmission bearing seat 12 is passed through the first through hole to firmly and firmly install the entire transmission gear assembly in the transmission mounting cavity 27 of the upper anvil 1 to ensure its stability during operation; two groups of rotating bevel gear 20 assemblies are installed in the rotating mounting cavity 28 of the upper anvil 1 respectively, that is, the second clamping bolt 18 of the rotating bearing seat 17 is passed through the second through hole to firmly and firmly install the entire rotating gear assembly in the rotating mounting cavity 28 of the upper anvil 1 to ensure its stability during operation. The two groups of connecting sleeves 10 are respectively installed in the connecting sleeve installation cavity 29 of the upper anvil 2, and are firmly and stably installed in the connecting sleeve installation cavity 29 of the upper anvil 2 through the installation holes 24, wherein the hook head plate 9 is installed under the rotating shaft 22 through the screw 23 to realize the connection between the rotating bevel gear 20 assembly and the connecting sleeve 10, thereby the hook head plate 9 connects the upper anvil 2 and the upper anvil seat 1, and stably installs the upper anvil 2 under the upper anvil seat 1.

[0070] When working, only the hook plate 9 and the rotating shaft 22 of the entire rotating device (i.e., the anvil changing device formed by the transmission bevel gear assembly 7, the rotating bevel gear assembly 8 and the connecting sleeve 10) bear the hundreds of kilograms of gravity of the upper anvil 2. At the same time, when the rotating handle 6 operates the hook plate 9 to rotate, the entire device is not blocked by external forces, thereby ensuring the stability of the entire device. In addition, the entire rotating device also achieves a miniaturized and lightweight design. Specifically, the diameter of the transmission mounting cavity 27, the rotating mounting cavity 28, and the connecting sleeve mounting cavity 29 is only 1 / 4-1 / 3 of the width of the upper anvil 2, and they are circular blind holes. This design not only ensures the compactness and lightness of the device, but also does not cause any adverse effects on the strength, rigidity, and function of the upper anvil and the upper anvil seat. Therefore, the device of this scheme achieves structural optimization and weight reduction while ensuring the function.

[0071] During operation: 1. During normal operation, the free forging press (hereinafter referred to as the press) is running, and the power generated by the press will be transmitted to the workpiece 3 through the upper anvil 1 and the upper anvil 2 in sequence, pressing the workpiece 3 downward, thereby realizing the forging process of the workpiece 3. When the press returns, the return power of the press will lift the upper anvil 1 and the upper anvil 2 through the upper anvil 1, the hook plate 9, and the upper anvil 2 in sequence to realize the return, thereby realizing the return process of the upper anvil 2 away from the workpiece 3.

[0072] 2. When the upper anvil 2 needs to be disassembled: first operate the press, place the upper anvil 2 steadily on the lower anvil 4, and turn the handles 6 on both sides of the upper anvil seat 1. The rotation of the handles 6 will drive the transmission bevel gear 16 in the transmission bevel gear assembly 7 to rotate synchronously. Since the transmission bevel gear 16 and the rotating bevel gear 20 are meshed with each other, the rotation of the transmission bevel gear 16 will cause the rotating bevel gear 20 to rotate accordingly. The rotation of the rotating bevel gear 20 will then drive the rotation of the rotating shaft 22, and finally the rotating shaft 22 drives the hook plate 9 to rotate. Fig.14 As shown, when the hook plate 9 rotates to 90 degrees, the hook plate 9 will get rid of the constraints of the through hole 25 and the rotating cavity 26 in the connecting sleeve 10, and will be separated from the through hole 25. At this time, the return function of the press is activated to separate the upper anvil 1 from the upper anvil 2, thereby realizing the disassembly of the upper anvil 2. After the disassembly is completed, the upper anvil 2 remains on the lower anvil 4, waiting for the subsequent rotation or replacement operation.

[0073] 3. Assembly of the upper anvil 2: First, place the upper anvil 2 on the lower anvil 4, and then push the upper anvil 2 and the lower anvil 4 together to the bottom of the press. Turn the handles 6 on both sides of the upper anvil 1, and the rotation of the handles 6 will drive the transmission bevel gear group to rotate synchronously. The rotation of the transmission bevel gear 16 in the transmission bevel gear group will then drive the rotation of the rotating bevel gear 20, and the rotation of the rotating bevel gear 20 will then drive the rotation of the rotating shaft 22, and finally the rotating shaft 22 will drive the hook plate 9 to rotate. Fig.15 As shown, when the hook plate 9 rotates to the position that is completely consistent with the through hole 25 in the inner connecting sleeve 10 of the upper anvil 2, the operating press falls naturally, and the operating handle 6 continues to rotate. When it rotates to the marked position and the limit position, the hook plate 9 rotates exactly 90 degrees, and the hook plate 9 is located in the rotating cavity 26. Finally, the operating press returns to complete the assembly of the upper anvil 2.

[0074] This solution breaks the technical prejudice that the replacement of anvils depends on the disassembly and assembly of wedge irons and the assistance of heavy equipment in traditional technology. The relatively simple mechanical transmission movement of this solution can realize efficient and reliable disassembly and assembly of the upper anvil 2, which greatly reduces the disassembly and assembly time of the upper anvil 2 and the downtime of the free forging press, thereby significantly improving the overall production efficiency. In addition, (1) this solution no longer requires the use of external tools (such as hammers), and can be disassembled by simply turning the handle 6. Compared with the traditional disassembly and assembly of the upper anvil, the labor intensity and workload are greatly reduced. (2) This solution drives the bevel gear shaft 11 and the transmission bevel gear 16 through the handle 6, and then drives the rotating shaft 22 and the hook head plate 9 to rotate with the help of the linkage design of the rotating bevel gear 20, thereby realizing the rapid disassembly and installation of the upper anvil 2, avoiding the cumbersome disassembly and installation of the wedge iron in the traditional method, and simplifying the operation process. (3) It avoids the safety risks brought by the use of heavy tools and equipment. At the same time, since there is no additional power, energy consumption is reduced, and the upper anvil 2 will not fall due to external power changes, thereby effectively avoiding possible safety and quality accidents, and significantly improving the safety of operation. (4) The transmission bevel gear assembly 7 and the rotating bevel gear assembly 8 are integrated in the inner cavity of the upper anvil 1, and the connecting sleeve 10 is located in the inner cavity of the upper anvil 2. The overall structure is compact and daily maintenance is more convenient. (5) The device has a simple structure, low manufacturing difficulty, strong manufacturability, wide applicability, and can be reused, which effectively reduces costs.

[0075] Embodiment 2:

[0076] The difference between this embodiment and the first embodiment is that the diameter of the rotating cavity 26 is 60mm-100mm, and the height of the rotating cavity 26 is 40mm-50mm; the length of the hook head plate 9 is 70mm-80mm, the width of the hook head plate 9 is 30mm-50mm, the height of the hook head plate 9 is 30mm-40mm, and the height of the through hole 25 is 30mm.

[0077] Specifically, in this embodiment, the diameter of the rotating cavity 26 is 90 mm, and the height of the rotating cavity 26 is 50 mm; the length of the hook head plate 9 is 75 mm, the width of the hook head plate 9 is 35 mm, and the height of the hook head plate 9 is 35 mm. The size of the hook head plate 9 is smaller than the size of the rotating cavity 26. Through the design of the size difference, the hook head plate 9 can rotate freely in the rotating cavity 26 without hindrance. When the hook head plate 9 is rotating, the gap reserved between the four sides and the four walls of the rotating cavity 26 not only ensures the smoothness of the rotation, but also can avoid wear or damage caused by collision to a certain extent, thereby effectively extending the service life of the components and ensuring the stability and reliability of the operation of the entire device. And the hook head plate 9 can contact the upper inner wall of the rotating cavity 26, increase the contact area, so that the hook head plate 9 is not easy to detach during use.

[0078] Embodiment three:

[0079] The difference between this embodiment and the first embodiment is that the hook plate 9 is chamfered around its periphery.

[0080] Specifically, Fig.16 As shown, the hook plate 9 is chamfered around, which effectively eliminates the sharp edges on the hook plate 9, makes its contact with the rotating cavity 26 smoother, and reduces the damage to the rotating cavity 26 during installation and removal. The placement of the hook plate 9 in the rotating cavity 26 is smoother and more effective, and the direct friction between the edge of the hook plate 9 and the rotating cavity 26 is reduced, thereby greatly reducing the wear caused by hard contact, making it easier to insert and remove the hook plate 9 from the rotating cavity 26, reducing the resistance during installation and removal, making installation simple, improving assembly efficiency, and reducing energy waste caused by downtime maintenance.

[0081] Embodiment 4:

[0082] The difference between this embodiment and the first embodiment is that the longitudinal section of the hook plate 9 is a trapezoid that is wide at the top and narrow at the bottom.

[0083] Specifically, Fig.17 As shown, the longitudinal section of the hook plate 9 is a trapezoid that is wide at the top and narrow at the bottom, and the hook plate 9 is chamfered on all sides. When the hook plate 9 is located in the rotating cavity 26, the long side of the hook plate 9 is in direct contact with the upper inner wall of the rotating cavity 26, which improves the guiding and passability of the hook plate without affecting the strength and rigidity of the hook plate 9, avoids the possibility of squeezing damage to the hook plate and the rotating shaft when the alignment error between the upper anvil and the anvil seat is large, and improves the efficiency of quick disassembly and assembly of the upper anvil.

[0084] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope 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 required by 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 quick anvil changing device for a free forging press, the free forging press comprising an upper anvil seat, an upper anvil, a lower anvil and a lower anvil seat, the upper anvil being located directly below the upper anvil seat, characterized in that: It comprises a plurality of transmission bevel gear assemblies, wherein the transmission bevel gear assemblies are located in the inner cavity of the upper anvil, a handle is connected to one side of the transmission bevel gear assembly, and the handle is located on the outer side of the upper anvil; the transmission bevel gear assembly comprises a bevel gear shaft, a transmission bevel gear is provided on the side of the bevel gear shaft away from the handle, the handle is used to provide power to drive the bevel gear shaft to rotate, and under the drive of the bevel gear shaft, the transmission bevel gear rotates accordingly; a rotating bevel gear assembly is vertically connected to the other side of the transmission bevel gear assembly, and the rotating bevel gear assembly is located in the inner cavity of the upper anvil; the rotating bevel gear assembly comprises a rotating bevel gear and a rotating shaft penetrating the rotating bevel gear; the rotating bevel gear is located in the middle position of the rotating shaft The upper end of the rotating bevel gear is meshed with the lower end of the transmission bevel gear; the coupling sleeve is connected to the lower part of the rotating bevel gear assembly, and the coupling sleeve is located in the inner cavity of the upper anvil, and the coupling sleeve includes a hook head plate and a rotating cavity for the hook head plate to rotate, and the hook head plate is located in the rotating cavity and is connected to the tail end of the rotating shaft; under the traction of the transmission bevel gear, the rotating bevel gear meshed with it rotates accordingly, and the rotation of the rotating bevel gear drives the rotating shaft to rotate, and finally the rotating shaft drives the hook head plate to rotate, and when the hook head plate rotates to a preset angle, the hook head plate will get rid of the constraint of the coupling sleeve and detach from the upper end of the coupling sleeve, thereby realizing the disassembly of the upper anvil.

2. A free forging press quick anvil changing device according to claim 1, characterized in that: The preset angle is 90 degrees.

3. The fast anvil changing device for a free forging press according to claim 1, characterized in that: The transmission bevel gear assembly also includes a bevel gear shaft mounting cylinder, one side of the bevel gear shaft mounting cylinder is connected to a transmission bearing seat, and the other side is connected to the transmission bevel gear; a plurality of bearing mounting holes are provided inside the bevel gear shaft mounting cylinder, and the bearing mounting holes are located at the ends of both sides of the bevel gear shaft mounting cylinder, and the bearing mounting holes are provided with a plurality of first bearings for assisting rotation, and the bevel gear shaft is embedded in the bevel gear shaft mounting cylinder through the first bearings and passes through the bevel gear shaft mounting cylinder, and the center of the transmission bearing seat passes through the bevel gear shaft and presses part of the first bearings inward.

4. A fast anvil changing device for a free forging press according to claim 3, characterized in that: The length of the bevel gear shaft in the X-axis direction is longer than the length of the bevel gear shaft mounting tube in the X-axis direction, and the excess end is used to connect the handle.

5. The fast anvil changing device for a free forging press according to claim 1, characterized in that: A plurality of second bearings are arranged on both sides of the rotating shaft, and a rotating bearing seat is arranged on the top of the rotating shaft. The center of the rotating bearing seat passes through the rotating shaft and presses the outer diameter of part of the second bearing.

6. The fast anvil changing device for a free forging press according to claim 1, characterized in that: A screw rod is provided at the tail end of the rotating shaft, and the screw rod is used to connect the rotating shaft and the hook head plate.

7. The fast anvil changing device for a free forging press according to claim 1, characterized in that: The connecting sleeve is provided with a through hole for the rotating shaft to pass through and a plurality of mounting holes for mounting the connecting sleeve. The mounting holes are evenly distributed on the periphery of the connecting sleeve, and the through hole is located above the center of the connecting sleeve.

8. The fast anvil changing device for a free forging press according to claim 7, characterized in that: The rotating chamber is located below the through hole.

9. A free forging press quick anvil changing device according to claim 7, characterized in that: The cross-section of the through hole is smaller than the cross-section of the hook plate, and the longitudinal section of the through hole is smaller than the longitudinal section of the hook plate; the cross-section of the hook plate is smaller than the cross-section of the rotating cavity, and the longitudinal section of the hook plate is smaller than the longitudinal section of the rotating cavity.

10. The fast anvil changing device for a free forging press according to claim 1, characterized in that: The cross section of the hook head plate is square.

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