A forming die for irregularly shaped forgings

Abstract

This utility model relates to the field of die forging technology and discloses a forming mold for irregularly shaped forgings, including a lower mold and an upper mold. The upper surface of the lower mold has a forming cavity. The upper mold has a mold core mounted on it via a connecting structure. The mold core includes a connecting plate, one end of which has a forming end, and the other end of which has two side plates. The lower surface of the upper mold has an installation groove, and the connecting plate is fitted into the installation groove. The outer surfaces of the two side plates contact the inner surface of the installation groove. The connecting structure includes a shell, the outer surface of which is fitted with a cover plate. The shell is located between the two side plates, and one end of the shell has a stop block. This utility model, through its connecting structure, enables quick disassembly between the upper mold and the mold core, avoiding the problem of material waste caused by the failure of the entire mold due to localized mold core wear when the mold core wears excessively.

Description

Technical Field

[0001] This utility model relates to the field of die forging technology, specifically a forming mold for irregular forgings. Background Technology

[0002] The forming mold for irregular forgings is a special tooling used to forge forgings with complex shapes, asymmetry, or non-standard geometric structures (i.e., "irregular forgings"). These molds control the plastic flow of metal at high temperatures to make the forgings achieve the shape, size, and performance required by the design. The forming mold for irregular forgings belongs to the category of die forging processing, specifically a type of hot die forging process.

[0003] Existing forming dies for irregular forgings generally consist of an upper die and a lower die. The upper surface of the lower die has a forming cavity, and the lower surface of the upper die has a core. The core applies pressure to the metal blank in the forming cavity, causing it to undergo plastic deformation, ultimately forming a forging with a complex geometric shape. In the existing technology, the upper die and the core are an integral structure. During the forging process, the core needs to withstand the reaction force of plastic deformation of the high-temperature metal blank. After long-term operation, the surface of the core will experience a decrease in dimensional accuracy due to mechanical wear, thermal fatigue, and other reasons. When the core wear exceeds the standard, the traditional solution requires replacing the entire upper die. However, the remaining parts of the upper die still have usability. The entire die is discarded only because of the failure of a part of the core, resulting in material waste. Utility Model Content

[0004] The purpose of this utility model is to provide a forming mold for irregular forgings, which solves the problem that when the mold core wear exceeds the standard, the traditional solution requires the entire upper mold to be replaced, but the rest of the upper mold still has usability. The entire mold is discarded only due to the failure of a local mold core, resulting in material waste.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a forming mold for irregularly shaped forgings, comprising a lower mold and an upper mold. The upper surface of the lower mold has a forming cavity. The upper mold has a mold core mounted on it via a connecting structure. The mold core includes a connecting plate, one end of which has a forming end, and the other end of which has two side plates. The lower surface of the upper mold has an installation groove, and the connecting plate is fitted into the installation groove. The outer surfaces of the two side plates are in contact with the inner surface of the installation groove. The connecting structure includes a shell, the outer surface of which is fitted with a cover plate. The shell is located between the two side plates, and one end of the shell has a stop block.

[0007] Furthermore, one side of the upper mold has an opening, one end of the outer shell is located inside the opening, the outer surface of the stop block has a threaded hole, the inner thread of the threaded hole is connected to a one-way screw, one end of the one-way screw is equipped with a connecting rod, the other end of the one-way screw is equipped with a knob, and the connecting rod is located inside the outer shell.

[0008] Furthermore, both the outer surface of the outer shell and the cover plate are provided with sliding grooves, and a fixing block is slidably connected inside the sliding groove. A sliding rod is installed at one end of the fixing block, and one end of the sliding rod extends into the interior of the outer shell and is provided with an abutment block. An installation hole is provided on the outer surface of the side plate, and one end of the fixing block is fitted into the interior of the installation hole.

[0009] Furthermore, the outer surface of the connecting rod is provided with a tapered part, the outer surface of the abutting block is in contact with the outer surface of the tapered part, and the outer surface of the sliding rod is fitted with a spring, one end of the spring is installed on the inner surface of the outer shell, and the other end of the spring is installed on the outer surface of the abutting block.

[0010] Furthermore, a sealing plate is provided at one end of the outer shell, a circular hole is provided on the outer surface of the stop block, and a mounting block is provided on the outer surface of the sealing plate, the mounting block being interference-fitted into the inside of the circular hole.

[0011] Furthermore, the lower surface of the lower mold is provided with a guide hole, and the lower surface of the upper mold is provided with a guide rod, which is slidably connected inside the guide hole.

[0012] This utility model has the following beneficial effects:

[0013] (1) By rotating the knob counterclockwise, the knob drives the one-way screw to exit outward along the threaded hole of the stop block, which drives the connecting rod and the tapered part to move backward synchronously. The tapered part gradually disengages from the tapered surface of the abutment block, the spring releases its elastic force, and pushes the abutment block and the slide rod to slide towards the center of the outer shell. The fixing block exits the mounting hole of the side plate with the slide rod, releasing the radial locking of the mold core. Then the mold core can be pulled out from the mounting groove. Through the set connection structure, the upper mold and the mold core can be quickly disassembled, avoiding the problem of material waste caused by the failure of the whole mold core due to the failure of the local mold core when the mold core wear exceeds the standard.

[0014] (2) When the mold is closed, the upper mold moves downward and the guide rod fixed on its lower surface is inserted vertically along the guide hole of the lower mold. The inner wall of the guide hole and the outer surface of the guide rod are tapered. In the initial contact stage, the tapered surface guides and automatically corrects the slight offset. After the mold is closed, the guide rod and the cylindrical section of the guide hole form a clearance fit, which restricts the horizontal freedom and ensures the alignment accuracy of the upper and lower molds. When the mold is opened, the guide rod exits in the opposite direction along the guide hole. There is no jamming throughout the process. Through two-stage guidance, the risk of mold misalignment is eliminated, and the consistency of the forming size of the irregular forging is ensured.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of a partial structure of the present invention;

[0019] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0020] Figure 4 This is an exploded view of the connection structure of this utility model;

[0021] Figure 5 This is a schematic diagram of a partial connection structure of the present invention;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the diagram: 1. Lower mold; 101. Molding cavity; 102. Guide hole; 2. Upper mold; 201. Mounting groove; 202. Through port; 203. Guide rod; 3. Connecting structure; 301. Outer shell; 302. Cover plate; 303. Stop block; 304. One-way screw; 305. Connecting rod; 306. Knob; 307. Fixing block; 308. Sliding rod; 309. Abutment block; 3010. Conical part; 3011. Spring; 3012. Sealing plate; 3013. Round hole; 3014. Mounting block; 4. Mold core; 401. Connecting plate; 402. Molding end; 403. Side plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 As shown, this utility model is a forming mold for irregular forgings, including a lower mold 1 and an upper mold 2. The upper surface of the lower mold 1 is provided with a forming cavity 101. The upper mold 2 is equipped with a mold core 4 through a connecting structure 3. The mold core 4 includes a connecting plate 401. One end of the connecting plate 401 is provided with a forming end 402. The other end of the connecting plate 401 is provided with two side plates 403. The lower surface of the upper mold 2 is provided with an installation groove 201. The connecting plate 401 is fitted and installed inside the installation groove 201. The outer surfaces of the two side plates 403 are in contact with the inner surface of the installation groove 201. The connecting structure 3 includes a shell 301. A cover plate 302 is installed on the outer surface of the shell 301. The shell 301 is located between the two side plates 403. A stop block 303 is installed at one end of the shell 301.

[0026] The connection structure 3 allows for quick disassembly between the upper mold 2 and the mold core 4, preventing the entire mold from being discarded due to partial failure of the mold core 4 when the wear of the mold core 4 exceeds the limit, thus avoiding material waste.

[0027] The upper mold 2 has an opening 202 on one side, and one end of the outer shell 301 is located inside the opening 202. The outer surface of the stop block 303 has a threaded hole, and a one-way screw 304 is threadedly connected inside the threaded hole. A connecting rod 305 is installed at one end of the one-way screw 304, and a knob 306 is provided at the other end of the one-way screw 304. The connecting rod 305 is located inside the outer shell 301.

[0028] The outer surfaces of the outer shell 301 and the cover plate 302 are provided with sliding grooves. A fixing block 307 is slidably connected inside the sliding groove. A sliding rod 308 is installed at one end of the fixing block 307. One end of the sliding rod 308 extends into the interior of the outer shell 301 and is provided with an abutment block 309. An installation hole is provided on the outer surface of the side plate 403. One end of the fixing block 307 is fitted into the interior of the installation hole.

[0029] The outer surface of the connecting rod 305 is provided with a tapered part 3010, the outer surface of the abutting block 309 is in contact with the outer surface of the tapered part 3010, and the outer surface of the sliding rod 308 is fitted with a spring 3011. One end of the spring 3011 is installed on the inner surface of the outer shell 301, and the other end of the spring 3011 is installed on the outer surface of the abutting block 309.

[0030] By rotating the knob 306 counterclockwise, the knob 306 drives the one-way screw 304 to exit outward along the threaded hole of the stop block 303, causing the connecting rod 305 and the tapered part 3010 to move backward synchronously. The tapered part 3010 gradually disengages from the tapered surface contact of the abutment block 309, the spring 3011 releases its elastic force, and pushes the abutment block 309 and the slide rod 308 to slide towards the center of the outer shell 301. The fixing block 307 exits the mounting hole of the side plate 403 along with the slide rod 308, releasing the radial locking of the mold core 4. After that, the mold core 4 can be pulled out from the mounting groove 201.

[0031] One end of the outer casing 301 is provided with a sealing plate 3012, the outer surface of the stop block 303 is provided with a round hole 3013, the outer surface of the sealing plate 3012 is provided with a mounting block 3014, and the mounting block 3014 is interference-fitted into the inside of the round hole 3013.

[0032] The sealing plate 3012 closes the end opening of the outer shell 301 to prevent metal shavings, oxide scale and coolant generated during forging from entering the interior of the connecting structure 3, thus avoiding contaminants from causing the threads to jam.

[0033] The lower surface of the lower mold 1 is provided with a guide hole 102, and the lower surface of the upper mold 2 is provided with a guide rod 203, which is slidably connected inside the guide hole 102.

[0034] When the mold is closed, the upper mold 2 moves downward, and the guide rod 203 fixed on its lower surface is inserted vertically along the guide hole 102 of the lower mold 1. The inner wall of the guide hole 102 and the outer surface of the guide rod 203 are tapered. In the initial contact stage, the tapered surface guides and automatically corrects minor offsets. After the mold is closed, the guide rod 203 and the cylindrical section of the guide hole 102 form a clearance fit, which restricts the horizontal degree of freedom and ensures the alignment accuracy of the upper and lower molds. When the mold is opened, the guide rod 203 exits in the opposite direction along the guide hole 102 without jamming. Through two-stage guidance, the risk of mold misalignment is eliminated, ensuring the consistency of the forming dimensions of the irregular forgings.

[0035] In use, the lower mold 1 and the upper mold 2 are first installed. Then, the metal blank is placed in the forming cavity 101. By starting the external drive device, the upper mold 2 moves vertically downward, so that the mold core 4 applies pressure to the metal blank in the forming cavity 101, causing it to undergo plastic deformation and finally forming a forging with a complex geometric shape. When the mold is closed, the upper mold 2 moves downward, and the guide rod 203 fixed on its lower surface is inserted vertically along the guide hole 102 of the lower mold 1. The inner wall of the guide hole 102 and the outer surface of the guide rod 203 are tapered. In the initial contact stage, the tapered surface guides and automatically corrects the slight offset. After the mold is closed, the guide rod 203 and the cylindrical section of the guide hole 102 form a clearance fit, which restricts the horizontal degree of freedom and ensures the alignment accuracy of the upper and lower molds. When the mold is opened, the guide rod 203 is withdrawn in the opposite direction along the guide hole 102 without jamming. Through two-stage guidance, the risk of mold misalignment is eliminated, and the consistency of the forming size of the irregular forging is ensured.

[0036] When it is necessary to disassemble the mold core 4, the knob 306 is rotated counterclockwise, causing the knob 306 to drive the one-way screw 304 to exit outward along the threaded hole of the stop block 303. This causes the connecting rod 305 and the tapered part 3010 to move backward synchronously. The tapered part 3010 gradually disengages from the tapered surface contact of the abutment block 309, and the spring 3011 releases its elastic force, pushing the abutment block 309 and the slide rod 308 to slide towards the center of the outer shell 301. The fixing block 307 exits the mounting hole of the side plate 403 along with the slide rod 308, releasing the radial locking of the mold core 4. After that, the mold core 4 can be pulled out from the mounting groove 201. Through the set connection structure 3, the upper mold 2 and the mold core 4 can be quickly disassembled, avoiding the problem of the entire mold being discarded due to the failure of a part of the mold core 4 when the mold core 4 wears out, thus avoiding the problem of material waste.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A forming die for irregularly shaped forgings, comprising a lower die (1) and an upper die (2), wherein the upper surface of the lower die (1) is provided with a forming cavity (101), characterized in that: The upper mold (2) is fitted with a mold core (4) via a connecting structure (3). The mold core (4) includes a connecting plate (401). One end of the connecting plate (401) is provided with a forming end (402), and the other end of the connecting plate (401) is provided with two side plates (403). The lower surface of the upper mold (2) is provided with an installation groove (201), and the connecting plate (401) is fitted inside the installation groove (201). The outer surfaces of the two side plates (403) are in contact with the inner surface of the installation groove (201). The connection structure (3) includes a housing (301), a cover plate (302) is installed on the outer surface of the housing (301), the housing (301) is located between two side plates (403), and a stop block (303) is installed at one end of the housing (301).

2. A forming die for irregularly shaped forgings according to claim 1, characterized in that: The upper mold (2) has an opening (202) on one side, one end of the outer shell (301) is located inside the opening (202), and the outer surface of the stop block (303) has a threaded hole. The threaded hole is internally threaded with a one-way screw (304), one end of which is equipped with a connecting rod (305), and the other end of which is provided with a knob (306). The connecting rod (305) is located inside the outer shell (301).

3. A forming die for irregularly shaped forgings according to claim 2, characterized in that: The outer surfaces of the outer shell (301) and the cover plate (302) are provided with sliding grooves. A fixing block (307) is slidably connected inside the sliding groove. A sliding rod (308) is installed at one end of the fixing block (307). One end of the sliding rod (308) extends into the interior of the outer shell (301) and is equipped with an abutment block (309). The outer surface of the side plate (403) is provided with mounting holes, and one end of the fixing block (307) is fitted into the mounting holes.

4. A forming die for irregularly shaped forgings according to claim 3, characterized in that: The outer surface of the connecting rod (305) is provided with a tapered part (3010), the outer surface of the abutting block (309) is in contact with the outer surface of the tapered part (3010), the outer surface of the sliding rod (308) is fitted with a spring (3011), one end of the spring (3011) is installed on the inner surface of the outer shell (301), and the other end of the spring (3011) is installed on the outer surface of the abutting block (309).

5. A forming die for irregularly shaped forgings according to claim 1, characterized in that: One end of the outer shell (301) is provided with a sealing plate (3012), the outer surface of the stop block (303) is provided with a round hole (3013), the outer surface of the sealing plate (3012) is provided with a mounting block (3014), and the mounting block (3014) is interference-fitted into the inside of the round hole (3013).

6. A forming die for irregularly shaped forgings according to claim 1, characterized in that: The lower mold (1) has a guide hole (102) on its lower surface, and the upper mold (2) has a guide rod (203) on its lower surface. The guide rod (203) is slidably connected inside the guide hole (102).

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