Metal thermal forming forging device and forging method

Abstract

The invention discloses a metal thermal forming forging device and a forging method. The device comprises a shell; the lower die holder comprises a base fixedly arranged at the bottom of the inner wall of the shell, multiple sets of die holder bodies are movably arranged on the circumferential surface of the base, a die cavity for the metal forge piece is defined by the multiple sets of die holder bodies, and a cooling cavity is formed in the die holder body. Therefore, the metal processing efficiency is improved; the pressure part is automatically triggered to move through flowing of a cooling medium, the gear is matched with the outer sleeve, an additional complex control system or manual intervention is not needed, automatic connection of the whole process from forging to cooling to die opening is achieved, manual operation errors are effectively reduced, and production efficiency and production safety are improved.

Description

Technical Field

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

[0002] In modern manufacturing, metal hot forming forging, as an important metal processing technology, is widely used in many fields such as aerospace, automobile manufacturing, and mechanical equipment. By heating and plastically deforming metal billets, it can manufacture complex-shaped parts with high strength and high reliability.

[0003] After the forging forming device processes the metal, the temperature is relatively high. During the process of workers taking the material, it is easy to cause harm to the workers. The natural cooling speed of metal forgings is slow, which affects the working efficiency of metal pipe processing. Therefore, a metal hot forming forging device and a forging method are provided to solve this problem. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:

[0005] A metal hot forming forging device, comprising:

[0006] A housing;

[0007] A lower die base, including a base fixedly arranged at the bottom of the inner wall of the housing. A plurality of die base bodies are movably arranged on the circumferential surface of the base. The plurality of die base bodies enclose to form a die cavity for metal forgings. A cooling cavity is arranged in the die base body. A connecting plate is fixedly arranged on the outer wall of the die base body. The bottom of the connecting plate penetrates through the housing and extends to the outside of the housing. A one-way flowing water discharge channel and a one-way flowing water inlet channel communicated with the cooling cavity are respectively arranged in the connecting plate;

[0008] A driving assembly, including a fixed frame one fixedly arranged at the bottom of the housing, a lead screw rotatably connected to the bottom of the fixed frame one, and a plurality of pushing members arranged between the lead screw and the connecting plate. A flow channel communicated with the water discharge channel is arranged in the lead screw. When the lead screw rotates, the plurality of die base bodies are driven by the pushing members to move in the direction of approaching or separating from each other;

[0009] A pushing assembly, including a fixed frame two fixedly sleeved on the surface of the lead screw, a pressure member arranged in the fixed frame two, and a gear arranged at the bottom of the pressure member. An outer sleeve is arranged below the gear. A through hole for communicating the fixed frame two with the flow channel is arranged on the lead screw and inside the fixed frame two;

[0010] Among them, external force drives the outer sleeve to rotate. When the cooling medium enters the cooling chamber through the water inlet and flows into the fixed frame 2 through the drain channel, downward pressure is generated on the pressure piece. The pressure piece drives the gear to enter the outer sleeve, controls the rotation of the lead screw, and thereby drives the multiple groups of mold base bodies to move away from each other.

[0011] As an improvement of the above technical solution, the pushing member includes a threaded sleeve threadedly connected to the lead screw and a movable rod movably inserted into one end of the fixed frame, and a rotating rod is rotatably connected between the threaded sleeve and the movable rod, and the position and number of the pushing member correspond one-to-one to the connecting plate.

[0012] As an improvement of the above technical solution, the pressure member includes a movable disk movably sleeved on the surface of the screw and a plurality of connecting rods fixedly arranged at the bottom of the movable disk, the bottom of the connecting rod passes through the fixed frame 2 and extends to the outside of the fixed frame 2, one end of the connecting rod extending to the outside of the fixed frame 2 is fixedly connected to the gear, and springs are wound on the surface of the plurality of connecting rods and located inside the fixed frame 2.

[0013] As an improvement of the above technical solution, the bottom of the screw passes through the outer sleeve and extends to the outside of the outer sleeve, one end of the screw extending to the outside of the outer sleeve is rotatably sleeved with a fixed pipe, the drain channel is connected to the fixed pipe through a pipeline, and the fixed pipe is connected to the flow channel.

[0014] As an improvement of the above technical solution, it also includes a bracket, the outer sleeve is rotatably plugged into the bracket, a motor is fixedly installed on the side wall of the bracket, and a transmission belt is transmission-connected between the motor and the outer sleeve.

[0015] As an improvement of the above technical solution, the inner wall of the outer sleeve is provided with tooth grooves matching the gears, the surface of the lead screw is integrally provided with multiple sets of limit blocks located at the sliding position of the gears, and the inner wall of the gear is provided with limit grooves corresponding to the positions and quantities of the limit blocks.

[0016] A metal hot forming forging method, using the metal hot forming forging device described above, comprises the following steps:

[0017] S1: placing the metal blank to be forged by electromagnetic heating in the die cavity of the lower die seat, and lowering the upper die seat to achieve die closing between the upper die seat and the lower die seat;

[0018] S2: After forming, the cooling medium enters the cooling cavity in the die body through the water inlet, absorbs the heat transferred from the die body and the metal blank, and promotes the rapid shaping of the forging;

[0019] S3: The cooled medium after absorbing heat flows out of the cooling cavity through the unidirectional drainage channel, and flows into the second fixed frame through the flow channel communicated with the drainage channel. As the cooled medium continues to flow in, the downward pressure generated on the pressure member gradually increases. When the pressure reaches the set threshold, the pressure member moves downward;

[0020] S4: The outer sleeve is driven to rotate by an external force. When the pressure member drives the gear to move downward into the outer sleeve, the outer sleeve drives the gear to rotate synchronously;

[0021] S5: The rotation of the gear drives the rotation of the lead screw. The lead screw drives multiple die holder bodies to move away from each other through multiple pushing members between it and the connecting plate, opening the die cavity so as to take out the forged metal forging.

[0022] Advantages of the present invention:

[0023] The metal forging can be quickly cooled by the cooled medium, thereby improving the processing efficiency of the metal;

[0024] By utilizing the flow of the cooled medium to automatically trigger the movement of the pressure member and the cooperation between the gear and the outer sleeve, without the need for an additional complex control system or manual intervention, the full-process automatic connection from forging, cooling to die opening is realized, effectively reducing manual operation errors and improving production efficiency and production safety. Description of the Drawings

[0025] Figure 1 It is the front view of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 The enlarged schematic view of the structure at A in it;

[0027] Figure 3 It is the schematic view of the connection structure of the gear, the outer sleeve and the lead screw of the present invention;

[0028] Reference numerals: 10, housing; 20, die holder body; 21, connecting plate; 211, drainage channel; 212, water inlet channel; 22, base; 30, first fixed frame; 31, moving rod; 32, lead screw; 321, flow channel; 322, through hole; 323, limit block; 324, fixed tube; 33, threaded sleeve; 40, second fixed frame; 41, movable disk; 42, spring; 43, gear; 44, outer sleeve; 50, bracket. Detailed Embodiment

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Embodiment 1

[0031] A metal hot forming forging device, comprising: a housing 10;

[0032] A lower die holder, including a base 22 fixedly arranged at the bottom of the inner wall of the housing 10. A plurality of die holder bodies 20 are movably arranged on the circumferential surface of the base 22. A die cavity for metal forgings is formed by enclosing the plurality of die holder bodies 20. A cooling cavity is formed in the die holder body 20. A connecting plate 21 is fixedly arranged on the outer wall of the die holder body 20. The bottom of the connecting plate 21 penetrates through the housing 10 and extends to the outside of the housing 10. A one-way flowing water discharge channel 211 and a one-way flowing water inlet channel 212 communicating with the cooling cavity are respectively arranged in the connecting plate 21;

[0033] A driving assembly, including a fixed frame one 30 fixedly arranged at the bottom of the housing 10, a lead screw 32 rotatably connected to the bottom of the fixed frame one 30, and a plurality of pushing members arranged between the lead screw 32 and the connecting plate 21. A flow channel 321 communicating with the water discharge channel 211 is formed in the lead screw 32. When the lead screw 32 rotates, the plurality of die holder bodies 20 are driven by the pushing members to move in the direction of approaching each other or separating from each other;

[0034] A pushing assembly, including a fixed frame two 40 fixedly sleeved on the surface of the lead screw 32, a pressure member arranged in the fixed frame two 40, and a gear 43 arranged at the bottom of the pressure member. An outer sleeve 44 is arranged below the gear 43. A through hole 322 for communicating the fixed frame two 40 with the flow channel 321 is formed on the lead screw 32 and inside the fixed frame two 40;

[0035] Wherein, an external force drives the outer sleeve 44 to rotate. When the cooling medium enters the cooling cavity through the water inlet channel 212 and then flows into the fixed frame two 40 through the water discharge channel 211, a downward pressure is generated on the pressure member. The pressure member drives the gear 43 into the outer sleeve 44 to control the rotation of the lead screw 32, thereby driving the plurality of die holder bodies 20 to move in the direction of separating from each other.

[0036] Specifically, during hot metal forming forging, the metal blank to be forged heated by electromagnetic heating is placed in the mold cavity. The upper die holder (which is prior art here and will not be elaborated further) descends, and the upper die holder and the lower die holder are closed for forming. Then, the cooling medium can enter the cooling cavity in the die holder body 20 through the water inlet channel 212. At this time, the cooling medium in the cooling cavity plays a role. The cooling medium absorbs the heat transferred from the die holder body 20 and the metal blank, thereby cooling the die holder body and the metal, enabling the forging to be quickly shaped. The cooling medium after absorbing heat flows out of the cooling cavity through the unidirectional drainage channel 211. The drainage channel 211 is also unidirectional, preventing the cooling medium from flowing back and ensuring the normal operation of the cooling system. After the cooling medium flows out of the drainage channel 211, since a flow channel 321 communicating with the drainage channel 211 is provided in the lead screw 32, the cooling medium will flow into the second fixed frame 40. The cooling medium flowing into the second fixed frame 40 generates a downward pressure on the pressure member. As the cooling medium continuously flows in, the pressure gradually increases. When the pressure reaches a certain level, the pressure member moves downward under the pressure of the cooling medium. The pressure member drives the gear 43 to move downward into the outer sleeve 44. When an external force drives the outer sleeve 44 to rotate, since the gear 43 meshes with the outer sleeve 44 (forming a meshing relationship after entering), the gear 43 will be driven to rotate by the outer sleeve 44. The gear 43 drives the lead screw 32 to rotate. When the lead screw 32 rotates, through multiple sets of pushing members provided between the lead screw 32 and the connecting plate 21, multiple sets of die holder bodies 20 are driven to move away from each other, opening the originally enclosed mold cavity, facilitating the removal of the forged metal forging. By utilizing the flow of the cooling medium to trigger the movement of the pressure member and the cooperation between the gear and the outer sleeve, no additional complex control system or manual intervention is required. The pressure and flow rate of the cooling medium are relatively stable, and the separation action of the lower die holder can be automatically started according to the cooling requirements during the forging process. After forging, the flow state of the cooling medium changes, thereby automatically driving the relevant components to act, realizing the automatic connection of a series of processes from forging to cooling and then to mold opening.

[0037] In one embodiment, the pushing member includes a threaded sleeve 33 threadedly sleeved on the lead screw 32 and a moving rod 31 movably inserted into the end of the first fixed frame 30. A rotating rod is rotatably connected between the threaded sleeve 33 and the moving rod 31. The position and quantity of the pushing members correspond one-to-one with the connecting plates 21. When the lead screw 32 rotates, the threaded sleeve 33 will move along the axial direction of the lead screw 32. When the threaded sleeve 33 moves along the axial direction of the lead screw 32, it will drive one end of the rotating rod to displace. The rotation and movement of the rotating rod will make the moving rod 31 perform a linear motion, thereby pushing the connecting plate 21 to move, and further driving the die base body 20 to move in a direction away from each other to open the die cavity for taking out the forging. When mold closing is required, the lead screw 32 is rotated in the reverse direction, and the threaded sleeve 33 drives the moving rod 31 to move inward, pulling the connecting plate 21, so that the die base body 20 moves in a direction close to each other to form a die cavity for forging. Limiting rings are fixedly sleeved on the surface of the lead screw and at both ends of the threaded sleeve 33 to control the moving distance of the threaded sleeve 33. At the same time, a through groove for the movement of the rotating rod is opened at the bottom of the first fixed frame 30.

[0038] In one embodiment, the pressing member includes a movable disk 41 movably sleeved on the surface of the lead screw 32 and multiple connecting rods fixedly arranged at the bottom of the movable disk. The bottom of the connecting rods penetrates through the second fixed frame 40 and extends to the outside of the second fixed frame 40. One end of the connecting rods extending to the outside of the second fixed frame 40 is fixedly connected to the gear 43. Springs 42 are wound on the surfaces of the multiple connecting rods and within the second fixed frame 40.

[0039] When the cooling medium flows into the second fixed frame 40 through the drain channel 211, the cooling medium will accumulate in the second fixed frame 40, generating a downward pressure on the movable disk 41. Under the pressure of the cooling medium, the movable disk 41 will overcome the elastic force of the spring 42 and move downward along the lead screw 32. Therefore, when the movable disk 41 moves downward, it will drive the gear 43 to move downward together through the connecting rods. In this way, the gear 43 will gradually enter into the outer sleeve 44 until it meshes with the outer sleeve 44. When the gear 43 enters the outer sleeve 44 and meshes with it, when an external force drives the outer sleeve 44 to rotate, the outer sleeve 44 will drive the gear 43 to rotate. The rotation of the gear 43 will be transmitted to the lead screw 32, causing the lead screw 32 to rotate, and further driving the die base body 20 to move in a direction away from each other through the pushing member to realize the opening action of the die cavity. When the cooling medium flows out of the second fixed frame 40, causing the pressure of the cooling medium in the second fixed frame 40 to decrease to a certain extent, the spring 42 will release its elastic potential energy, pushing the movable disk 41 to move upward, driving the gear 43 to move upward through the connecting rods, so that it disengages from the outer sleeve 44, thereby stopping the rotation of the lead screw 32 and the movement of the die base body 20.

[0040] In one embodiment, the bottom of the lead screw 32 passes through the outer sleeve 44 and extends to the outside of the outer sleeve 44. One end of the lead screw 32 extending to the outside of the outer sleeve 44 is rotatably sleeved with a fixed pipe 324. The drain channel 211 is connected to the fixed pipe 324 through a pipeline. The fixed pipe 324 is connected to the flow channel 321. After the cooling medium absorbs heat in the cooling cavity of the mold base body 20, it flows into the fixed pipe 324 through the drain channel 211, and then enters the flow channel 321 from the fixed pipe 324. When the cooling medium flows through the flow channel 321, it will flow into the fixed frame 40 through the through hole 322. A water pipe is fixedly inserted at the bottom of the fixed pipe 324. When the cooling medium needs to flow out of the fixed frame 40, the solenoid valve on the water pipe is opened. The lead screw 32 and the outer sleeve 44 do not interfere with each other at the connection position, ensuring that the lead screw 32 can rotate freely and the outer sleeve 44 can also play its role normally.

[0041] In one embodiment, a bracket 50 is further included, and the outer sleeve 44 is rotatably plugged into the bracket 50. A motor is fixedly installed on the side wall of the bracket 50. A transmission belt is connected between the motor and the outer sleeve 44. The bracket 50 provides a structural basis for installation and support for the outer sleeve 44. The outer sleeve 44 is rotatably plugged into the bracket 50 to maintain a stable position. This installation method ensures that the outer sleeve 44 will not shake or deviate during rotation, and provides reliable guarantee for its accurate engagement with the gear 43 and subsequent transmission. When the motor is started, the rotation of the motor is transmitted to the outer sleeve 44 through the transmission belt, driving the outer sleeve 44 to rotate.

[0042] The inner wall of the outer sleeve 44 is provided with tooth grooves adapted to the gear 43. A plurality of limiting blocks 323 are integrally formed on the surface of the lead screw 32 at the sliding position of the gear 43. The inner wall of the gear 43 is provided with limiting grooves corresponding to the positions and numbers of the limiting blocks 323 one by one. When the pressure member drives the gear 43 to move downward into the outer sleeve 44 under the action of the cooling medium pressure, the teeth of the gear 43 mesh with the tooth grooves on the inner wall of the outer sleeve 44. At this time, when the outer sleeve 44 is driven to rotate by the motor through the transmission belt, the gear 43 can be driven to rotate synchronously through the meshing relationship between the tooth grooves and the gear 43. The cooperation between the limiting blocks 323 and the limiting grooves plays two important roles. On the one hand, during the process of the gear 43 moving up and down along the lead screw 32 (driven by the pressure member), the limiting blocks 323 slide in the limiting grooves, restricting the gear 43 to move only along the axial direction of the lead screw 32, preventing the gear 43 from rotating circumferentially or shifting during the movement, and ensuring the accuracy and stability of the movement of the gear 43. On the other hand, when the gear 43 meshes with the outer sleeve 44, the cooperation between the limiting blocks 323 and the limiting grooves can ensure the power transmission between the gear 43 and the lead screw 32, so that when the gear 43 rotates, it can drive the lead screw 32 to rotate synchronously through the limiting blocks 323, thereby achieving the purpose of controlling the lead screw 32 through the rotation of the gear 43 and further driving the mold base body 20 to move.

[0043] Embodiment 2

[0044] A metal hot forming forging method uses the metal hot forming forging device described in Embodiment 1 and includes the following steps:

[0045] S1: Place the metal blank to be forged heated by electromagnetic heating in the mold cavity of the lower mold base, and lower the upper mold base to achieve the closing of the upper and lower mold bases;

[0046] S2: After forming, the cooling medium enters the cooling cavity in the mold base body 20 through the water inlet 212, absorbs the heat transferred by the mold base body 20 and the metal blank, and promotes the rapid shaping of the forging;

[0047] S3: The cooling medium after absorbing heat flows out of the cooling cavity through the unidirectional drainage channel 211, and flows into the fixed frame two 40 through the flow channel 321 communicated with the drainage channel 211. As the cooling medium continues to flow in, the downward pressure generated on the pressure member gradually increases. When the pressure reaches the set threshold, the pressure member moves downward;

[0048] S4: The outer sleeve is driven to rotate by an external force. When the pressure member drives the gear 43 to move downward into the outer sleeve 44, the outer sleeve 44 drives the gear 43 to rotate synchronously;

[0049] S5: The rotation of the gear 43 drives the rotation of the lead screw 32. The lead screw 32 drives multiple sets of die base bodies 20 to move away from each other through multiple sets of pushing members between it and the connecting plate 21, opening the die cavity so as to take out the forged metal forgings.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it.

Claims

1. A metal hot forming forging device, characterized in that, Comprising: A housing (10); A lower die base, including a base (22) fixedly arranged at the bottom of the inner wall of the housing (10). A plurality of die base bodies (20) are movably arranged on the circumferential surface of the base (22). The plurality of die base bodies (20) enclose to form a die cavity for metal forgings. A cooling cavity is formed in the die base body (20). A connecting plate (21) is fixedly arranged on the outer wall of the die base body (20). The bottom of the connecting plate (21) penetrates through the housing (10) and extends to the outside of the housing (10). A unidirectional flow drain channel (211) and a unidirectional flow water inlet channel (212) which are communicated with the cooling cavity are respectively arranged in the connecting plate (21); A driving assembly, including a fixed frame one (30) fixedly arranged at the bottom of the housing (10), a lead screw (32) rotatably connected to the bottom of the fixed frame one (30), and a plurality of pushing members arranged between the lead screw (32) and the connecting plate (21). A flow channel (321) communicated with the drain channel (211) is formed in the lead screw (32). When the lead screw (32) rotates, the plurality of die base bodies (20) are driven by the pushing members to move in the direction of approaching or separating from each other; A pushing assembly, including a fixed frame two (40) fixedly sleeved on the surface of the lead screw (32), a pressure member arranged in the fixed frame two (40), and a gear (43) arranged at the bottom of the pressure member. An outer sleeve (44) is arranged below the gear (43). A through hole (322) for communicating the fixed frame two (40) with the flow channel (321) is formed on the lead screw (32) and inside the fixed frame two (40); Wherein, an external force drives the outer sleeve (44) to rotate. When the cooling medium enters the cooling cavity through the water inlet channel (212) and then flows into the fixed frame two (40) through the drain channel (211), a downward pressure is generated on the pressure member. The pressure member drives the gear (43) into the outer sleeve (44) to control the rotation of the lead screw (32), thereby driving the plurality of die base bodies (20) to move in the direction of separating from each other.

2. The hot metal forming forging device according to claim 1, characterized in that: The pushing member includes a threaded sleeve (33) threadedly sleeved on the lead screw (32) and a moving rod (31) movably inserted into the end of the fixed frame one (30). A rotating rod is rotatably connected between the threaded sleeve (33) and the moving rod (31). The positions and numbers of the pushing members correspond to the connecting plates (21) one by one.

3. The hot metal forming forging device according to claim 2, characterized in that: The pressure member includes a movable disk (41) movably sleeved on the surface of the lead screw (32) and a plurality of connecting rods fixedly arranged at the bottom of the movable disk. The bottom of the connecting rods penetrates through the fixed frame two (40) and extends to the outside of the fixed frame two (40). One end of the connecting rods extending to the outside of the fixed frame two (40) is fixedly connected to the gear (43). A spring (42) is wound on the surfaces of the plurality of connecting rods and inside the fixed frame two (40).

4. The hot metal forming forging device according to claim 3, characterized in that: The bottom of the lead screw (32) passes through the outer sleeve (44) and extends to the outside of the outer sleeve (44); one end of the lead screw (32) extending to the outside of the outer sleeve (44) is rotatably sleeved with a fixed pipe (324); the drain channel (211) is connected to the fixed pipe (324) through a pipeline, and the fixed pipe (324) is connected to the flow channel (321).

5. The hot metal forming forging device according to claim 1, characterized in that: It also comprises a bracket (50), the outer sleeve (44) is rotatably plugged into the bracket (50), a motor is fixedly mounted on the side wall of the bracket (50), and a transmission belt is transmission-connected between the motor and the outer sleeve (44).

6. The hot metal forming forging device according to claim 1, characterized in that: The inner wall of the outer sleeve (44) is provided with tooth grooves adapted to the gear (43); the surface of the lead screw (32) is integrally formed with a plurality of limit blocks (323) at the sliding position of the gear (43); and the inner wall of the gear (43) is provided with limit grooves corresponding to the position and number of the limit blocks (323).

7. A metal hot forming forging method, which uses the metal hot forming forging device according to any one of claims 1-6, characterized in that: The following steps are involved: S1: placing the metal blank to be forged by electromagnetic heating in the die cavity of the lower die seat, and lowering the upper die seat to achieve die closing between the upper die seat and the lower die seat; S2: After forming, the cooling medium enters the cooling cavity in the die base body (20) through the water inlet (212), absorbs the heat transferred from the die base body (20) and the metal blank, and promotes rapid shaping of the forged piece; S3: The cooling medium after absorbing heat flows out of the cooling cavity through the unidirectional flow drain channel (211), and flows into the second fixed frame (40) through the flow channel (321) connected to the drain channel (211). As the cooling medium continues to flow in, the downward pressure on the pressure piece gradually increases. When the pressure reaches a set threshold, the pressure piece moves downward. S4: External force drives the outer sleeve to rotate, and when the pressure member drives the gear (43) to move downward into the outer sleeve (44), the outer sleeve (44) drives the gear (43) to rotate synchronously; S5: The gear (43) rotates to drive the lead screw (32) to rotate. The lead screw (32) drives the multiple groups of die base bodies (20) to move away from each other through the multiple groups of pushers between the lead screw (32) and the connecting plate (21), thereby opening the die cavity so as to take out the forged metal forging.

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