A forging die for a special-shaped forging

Abstract

The utility model provides a kind of forging die for special-shaped forge piece, including upper die and lower die, lower die is set on the workbench of forging press, upper die is set on the pressure head of forging press, workbench is provided with die body, die body is internally provided with the die cavity compatible with special-shaped forge piece, lower die is detachably set in the die cavity, and lower die is attached with die cavity, upper die is detachably set in the lower part of pressure head, and upper die is compatible with lower die, lower die includes fixed die and movable die, movable die is located on fixed die, and lifting assembly is arranged on the lower part of movable die on workbench, the utility model can realize the quick replacement and maintenance operation of die by detachably set die, and the automatic lifting and discharging operation of workpiece after forging can be realized by lifting assembly while lifting movable die in lower die, greatly improve the workpiece's material efficiency, and then greatly improve the forging efficiency, more convenient and efficient operation.

Description

Technical Field

[0001] This utility model relates to the field of forging die equipment technology, specifically to a forging die for irregularly shaped forgings. Background Technology

[0002] Forging dies are tools that can shape billets into forgings. Forging dies are molds used in the forging process. Under the action of external force, the raw material undergoes plastic deformation in the forging die, thereby obtaining parts of the required shape and size. Forging dies play a crucial role in the production of forgings.

[0003] Chinese patent CN212577415U discloses a forging die for irregularly shaped forgings. This forging die uses a water pump to draw coolant from inside the cooling tank into the cooling pipes, effectively cooling the forging inside the lower forging die and accelerating the cooling process. A heat dissipation mechanism further dissipates the heat absorbed by the coolant, allowing for coolant recycling. However, while solving this problem, this forging die for irregularly shaped forgings has the following drawbacks:

[0004] The device rotates a fixed shaft to make a rotating wheel rotate, which in turn drives a sleeve rod to rotate. When the sleeve rod rotates, it can push a moving rod to move a push plate, pushing the forging out of the forging mold. This method of rotating a fixed shaft to move the push plate requires a large number of rotations, resulting in a long demolding time.

[0005] As the usage time and frequency of molds increase, it is inevitable that products will have difficulty in being demolded. At this time, it is necessary to disassemble and maintain the mold. However, since most traditional forging molds are integrally formed, disassembly and installation are difficult and cumbersome, which greatly reduces forging efficiency. Utility Model Content

[0006] In view of this, the present invention provides a forging die for irregular forgings, which can quickly lift the product or the moving die in the lower die through the lifting component to realize the rapid unloading of the forged workpiece. Moreover, the detachable die allows for quick disassembly and maintenance, greatly improving forging efficiency and making the operation more convenient and efficient.

[0007] To solve the above-mentioned technical problems, this utility model provides a forging die for irregularly shaped forgings, including an upper die and a lower die. The lower die is set on the worktable of a forging press, and the upper die is set on the press head of the forging press. The upper and lower dies cooperate to form irregularly shaped forgings. A die body is set on the worktable, and a die cavity adapted to the irregularly shaped forging is opened in the die body. The lower die is detachably set in the die cavity and fits against the die cavity. The upper die is detachably set at the lower part of the press head and is adapted to the lower die. The lower die includes a fixed die and a moving die. The moving die is located on the fixed die. A lifting component is set on the worktable and at the lower part of the moving die. This utility model can realize the quick replacement and maintenance of the die through the detachable die. At the same time, the lifting component can realize the automatic lifting and unloading of the forged workpiece by lifting the moving die in the lower die, which greatly improves the workpiece unloading efficiency and thus greatly improves the forging efficiency, making the operation more convenient and efficient.

[0008] The workbench is also provided with an installation slot. The lifting assembly includes a telescopic push rod set in the installation slot. The output rod end of the telescopic push rod is provided with a top plate. The upper part of the top plate is fixed together with the lower part of the moving mold. This utility model can push the top plate upward to lift the moving mold by the extension of the output rod of the telescopic push rod, thereby realizing the lifting operation of the moving mold and the forged workpiece, which is convenient for quick material removal.

[0009] The telescopic push rod is a hydraulic push rod.

[0010] The worktable is also equipped with guide rods, and the pressure head is provided with guide holes that are compatible with the guide rods. The pressure head is slidably mounted on the guide rods. This utility model can greatly increase the stability of the upper and lower die positioning forging operation through the cooperation of the guide rods and guide holes, and greatly improve the precision of the product.

[0011] The fixed mold has mounting holes, and the worktable has pin holes coaxial with the mounting holes. The fixed mold can be detachably mounted on the worktable by a positioning pin. This utility model can achieve the installation and fixing of the fixed mold and the worktable by inserting the positioning pin after the mounting holes and pin holes are coaxial, which greatly improves the installation accuracy and stability.

[0012] The upper die is detachably mounted on the pressure head by bolts, which facilitates its disassembly and maintenance.

[0013] A heat-resistant expansion ring is provided at the joint between the fixed mold and the moving mold, which facilitates the sealing performance of the joint between the fixed mold and the moving mold.

[0014] There are four guide rods, located at the four corners of the workbench, and correspondingly, there are four guide holes.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. Significantly improve mold changing and maintenance efficiency: This utility model can achieve quick mold disassembly and assembly by connecting the upper mold with bolts and the lower mold fixed with positioning pins. The mold changing time is greatly shortened compared with traditional devices, and the whole machine does not need to be disassembled during maintenance, thus reducing maintenance costs.

[0017] 2. Achieve safe and efficient material handling: This utility model can automatically eject the workpiece from the mold cavity through the lifting component driven by the hydraulic push rod, eliminating the need for manual insertion into the high-temperature mold cavity to handle the material, greatly improving material handling efficiency, and eliminating the risk of burns.

[0018] 3. Significantly improves product precision: This utility model can greatly reduce the mold positioning deviation through the cooperation of four sets of guide rods and guide holes, greatly improve the dimensional accuracy of forgings, and greatly reduce the scrap rate.

[0019] 4. Enhanced sealing reliability: The heat-resistant expansion ring made of flexible graphite material can adapt to the high-temperature environment of forging, effectively sealing the joint between the fixed mold and the moving mold, reducing flash, greatly reducing subsequent processing steps, and improving production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the forging die and forging press for irregularly shaped forgings according to this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a top view of the forging die and forging press for irregularly shaped forgings according to this utility model;

[0023] Figure 4 This utility model Figure 3 Sectional view at point BB.

[0024] Explanation of reference numerals in the attached drawings: 100, upper die; 200, lower die; 210, fixed die; 211, mounting hole; 220, moving die; 300, forging press; 310, worktable; 311, mounting groove; 312, pin hole; 320, pressure head; 321, guide hole; 400, die body; 410, die cavity; 500, lifting assembly; 510, telescopic push rod; 520, top plate; 600, guide rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0026] like Figure 1-4 As shown: This embodiment provides a forging die for irregularly shaped forgings, including an upper die 100 and a lower die 200. The lower die 200 is disposed on the worktable 310 of a forging press 300, and the upper die 100 is disposed on the pressure head 320 of the forging press 300. The upper die 100 and the lower die 200 cooperate to perform forming operations on irregularly shaped forgings. A die body 400 is disposed on the worktable 310, and a die cavity 410 adapted to the irregularly shaped forging is opened in the die body 400. The lower die 200 is detachably disposed in the die cavity 410, and the lower die... The upper die 100 fits into the mold cavity 410. The upper die 100 is detachably mounted on the lower part of the pressure head 320, and the upper die 100 is adapted to the lower die 200. The lower die 200 includes a fixed die 210 and a moving die 220. The moving die 220 is located on the fixed die 210. A lifting assembly 500 is provided on the worktable 310 and located below the moving die 220. Specifically, the worktable 310 is made of Q345B low alloy high strength steel, which has high strength and deformation resistance. The mold body 400 has a mold cavity 4 that is adapted to the irregular forging. 10. The pressure head 320 is made of Q345B steel of the same material. It has an upper die 100 mounting surface at the bottom and is connected to the power mechanism of the forging press 300 at the top. The upper die 100 is made of H13 hot work die steel, which has excellent high-temperature strength and toughness and can withstand repeated forging impacts. The upper die 100 is detachably connected to the lower part of the pressure head 320 by stainless steel bolts. Anti-loosening washers are used on the bolts to enhance connection stability. The lower die 200 includes a fixed die 210 and a moving die 220, both made of H13 hot work die steel. The fixed die 210... The die 20 has a mounting hole 211 coaxial with the pin hole 312 of the worktable 310. It is detachably fixed to the worktable 310 by a positioning pin made of 45# steel. The moving die 220 is placed on top of the fixed die 210. An annular groove is formed on the mating surface of the two dies, and a heat-resistant expansion ring is installed inside the groove. The heat-resistant expansion ring is made of flexible graphite material, which maintains elasticity within a temperature range of -200℃ to 1650℃. This material compensates for the expansion difference between the fixed die 210 and the moving die 220 caused by high temperatures, achieving a seal at the joint and preventing forging waste material from entering and causing jamming. This invention allows for quick die replacement and maintenance through the detachable die design. Simultaneously, the lifting assembly 500 can lift the moving die 220 in the lower die 200, simultaneously achieving automatic lifting and unloading of the forged workpiece, greatly improving workpiece handling efficiency and thus significantly increasing forging efficiency. The operation is more convenient and efficient.

[0027] According to one embodiment of the present invention, such as Figure 1-4 As shown, the workbench 310 is also provided with an installation slot 311. The lifting assembly 500 includes a telescopic push rod 510 disposed in the installation slot 311. The output rod end of the telescopic push rod 510 is provided with a top plate 520. The upper part of the top plate 520 is fixed together with the lower part of the moving mold 220. The top plate 520 is made of Q235 steel. The upper part is fixed to the bottom of the moving mold 220 by welding, and the lower part is threadedly connected to the end of the hydraulic push rod output rod. After the hydraulic push rod is energized, it can drive the top plate 520 to drive the moving mold 220 and the formed workpiece to rise synchronously. This utility model can push the top plate 520 upward to lift the moving mold 220 by the extension of the output rod of the telescopic push rod 510, thereby realizing the lifting operation of the moving mold 220 and the forged workpiece, which is convenient for quick material removal.

[0028] The telescopic push rod 510 is a hydraulic push rod. The telescopic push rod 510 adopts the DYTZ3000-500 hydraulic push rod from Dezhou Lituo Hydraulic Equipment Co., Ltd., which can meet the lifting requirements of most irregular forgings.

[0029] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a guide rod 600 is also provided on the worktable 310, and a guide hole 321 adapted to the guide rod 600 is provided on the pressure head 320. The pressure head 320 is slidably mounted on the guide rod 600. Specifically, the guide rod 600 is made of 40Cr alloy structural steel, and after quenching and tempering, its hardness reaches HRC28-32. The surface is plated with hard chrome to improve wear resistance. The guide rod 600 is vertically fixed at the four corners of the worktable 310 and is clearance-fitted with the guide hole 321 of the pressure head 320 (gap 0.02-0.05mm) to ensure the positioning accuracy when the upper die 100 and the lower die 200 are closed. This utility model can greatly increase the stability of the positioning forging operation of the upper die 100 and the lower die 200 through the cooperation of the guide rod 600 and the guide hole 321, and greatly improve the precision of the product.

[0030] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, the fixed mold 210 has a mounting hole 211, and the worktable 310 has a pin hole 312 coaxial with the mounting hole 211. The fixed mold 210 is detachably mounted on the worktable 310 by means of a positioning pin. This utility model can achieve the installation and fixing of the fixed mold 210 and the worktable 310 by inserting the positioning pin after the mounting hole 211 and the pin hole 312 are coaxial, which greatly improves the installation accuracy and stability.

[0031] The upper mold 100 is detachably mounted on the pressure head 320 by bolts, which facilitates its disassembly and maintenance.

[0032] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, there are four guide rods 600, which are located at the four corners of the worktable 310. Correspondingly, there are also four guide holes 321. The inner wall of the guide holes 321 is chrome-plated to reduce sliding friction.

[0033] How to use this utility model:

[0034] First, it needs to be clarified that the mold involved in this utility model is mainly used to be compatible with the forging press 300 for producing forgings, such as stainless steel brackets and shells. This utility model will elaborate on the usage method and working principle of the mold in the forging process of producing irregular forgings, taking the production of irregular forgings as an example. The working principle is as follows:

[0035] This device achieves forging operations through a continuous process of "positioning and guiding - mold closing and forming - automatic lifting - rapid mold changing":

[0036] Positioning and guiding principle: When the pressure head 320 descends, the four sets of guide rods 600 and guide holes 321 are precisely matched to limit the horizontal displacement of the pressure head 320, which greatly reduces the mold closing deviation between the upper mold 100 and the lower mold 200.

[0037] Sealing molding principle: During the forging process, the heat-resistant expansion ring expands slightly under high temperature, tightly fitting the mating surface of the fixed mold 210 and the moving mold 220, blocking the overflow path of the forging material;

[0038] Automatic lifting principle: After forging, the hydraulic push rod output rod extends and pushes the top plate 520 to drive the moving mold 220 and the workpiece to rise to the outside of the mold body 400, so as to separate the workpiece from the mold cavity 410.

[0039] The principle of quick mold change: the upper mold 100 can be separated by removing the bolts, the lower mold 200 can be removed by pulling out the positioning pin, the fixed mold 210 can be removed, and the moving mold 220 can be quickly replaced with the lifting assembly 500, which greatly reduces the time spent on the entire mold change process.

[0040] The usage method is as follows:

[0041] Device installation: Place the fixed mold 210 in the mold cavity 410 of the worktable 310, making the mounting hole 211 coaxial with the pin hole 312, and insert the positioning pin to fix it; place the moving mold 220 on the upper part of the fixed mold 210, ensuring that the heat-resistant expansion ring fits the ring groove; install the hydraulic push rod into the mounting groove 311, and fix the top plate 520 to the bottom of the moving mold 220; fix the upper mold 100 to the pressure head 320 with bolts, and adjust the pressure head 320 so that the guide rod 600 is inserted into the guide hole 321;

[0042] Forging operation: The heated forging billet is placed into the cavity of the moving die 220, the forging press 300 is started, the pressure head 320 descends along the guide rod 600, the upper die 100 and the lower die 200 close to form the forging billet, and the heat-resistant expansion ring achieves the sealing of the joint;

[0043] Automatic material handling: After molding, the pressure head 320 rises and resets, the hydraulic push rod is activated, and the output rod pushes the top plate 520 to drive the moving mold 220 and the workpiece to rise. After the workpiece is completely separated from the mold cavity 410, the workpiece is removed manually or by a robotic arm, and the hydraulic push rod resets to drive the moving mold 220 back down.

[0044] Mold replacement: When the mold needs to be replaced, first remove the bolts of the upper mold 100 to remove the upper mold 100, pull out the positioning pin to remove the fixed mold 210, disassemble the connection between the top plate 520 and the moving mold 220, replace the upper mold 100, fixed mold 210 and moving mold 220 with suitable ones, and then repeat the installation steps to start working again.

[0045] This invention enables rapid lifting of the product or the moving mold 220 in the lower mold 200 via the lifting component 500, thus facilitating rapid unloading of the forged workpiece. Furthermore, the detachable mold allows for rapid disassembly and maintenance, greatly improving forging efficiency and making operation more convenient and efficient.

[0046] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A forging die for irregularly shaped forgings, comprising an upper die (100) and a lower die (200), wherein the lower die (200) is disposed on the worktable (310) of a forging press (300), and the upper die (100) is disposed on the pressure head (320) of the forging press (300), wherein the upper die (100) and the lower die (200) cooperate to perform forming operations on irregularly shaped forgings, characterized in that: A mold body (400) is provided on the workbench (310). A mold cavity (410) adapted to the irregular forging is provided in the mold body (400). The lower mold (200) is detachably disposed in the mold cavity (410) and fits into the mold cavity (410). The upper mold (100) is detachably disposed at the lower part of the pressure head (320) and is adapted to the lower mold (200). The lower mold (200) includes a fixed mold (210) and a moving mold (220). The moving mold (220) is located on the fixed mold (210). A lifting assembly (500) is provided on the workbench (310) and located at the lower part of the moving mold (220).

2. The forging die for a profiled forging according to claim 1, characterized in that: The workbench (310) is also provided with an installation slot (311). The lifting assembly (500) includes a telescopic push rod (510) disposed in the installation slot (311). The output rod end of the telescopic push rod (510) is provided with a top plate (520). The upper part of the top plate (520) is fixed together with the lower part of the moving mold (220).

3. The forging die for irregularly shaped forgings as described in claim 2, characterized in that: The telescopic push rod (510) is a hydraulic push rod.

4. The forging die for irregularly shaped forgings as described in claim 1, characterized in that: The workbench (310) is also provided with a guide rod (600), and the pressure head (320) is provided with a guide hole (321) that is compatible with the guide rod (600). The pressure head (320) is slidably disposed on the guide rod (600).

5. The forging die for a profiled forging according to claim 1, characterized by: The fixed mold (210) has an installation hole (211), and the worktable (310) has a pin hole (312) coaxial with the installation hole (211). The fixed mold (210) is detachably mounted on the worktable (310) by means of a positioning pin.

6. The forging die for irregularly shaped forgings as described in claim 1, characterized in that: The upper mold (100) is detachably mounted on the pressure head (320) by bolts.

7. The forging die for a profiled forging according to claim 1, characterized by: A heat-resistant expansion ring is provided at the joint between the fixed mold (210) and the moving mold (220).

8. The forging die for irregularly shaped forgings as described in claim 4, characterized in that: There are four guide rods (600), which are located at the four corners of the workbench (310), and there are also four guide holes (321).

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