A concave anvil structure for double-bore dish-shaped forgings

Abstract

This utility model belongs to the field of forging equipment technology, specifically relating to a concave anvil structure for double-bore disc-shaped forgings, including a bottom mold and a top mold. The top mold is located on top of the bottom mold. Both the bottom mold and the top mold have anvils suitable for forging the forging on opposite sides. The key feature is that both the bottom mold and the top mold have cavities inside, and each cavity has a demolding mechanism. This demolding mechanism includes a transmission wall located within the cavity, which is integral with the anvil. A vibrating element is also included, with one end abutting against the transmission wall. This vibrating element is suitable for striking the transmission wall. The purpose is that, through the arrangement of the anvils and concave grooves, when the bottom mold and the top mold are closed, both ends of the forging are pressed into the corresponding concave grooves, forming a double-bore structure. The middle part of the forging is pressed into a disc shape and filled into the forming cavity formed by the two anvils, thereby achieving the purpose of integral forming of the forging.

Description

Technical Field

[0001] This utility model belongs to the field of forging equipment technology, specifically relating to a concave anvil structure for double-bore dish-shaped forgings. Background Technology

[0002] Forging is a general term for forging and stamping. It is a forming process that uses the hammer, anvil, punch or die of forging machinery to apply pressure to the blank, causing it to undergo plastic deformation, thereby obtaining the part of the required shape and size.

[0003] In the existing technology, most steam turbine impellers are disc-shaped forgings with bosses on both sides. Generally, one side of the boss can be forged using a lower die, and the other side is machined by cutting. This method is not only inefficient, but also wastes materials and increases production costs. Moreover, after forging, the forging will stick tightly to the inner wall of the die, making it difficult to open the die and remove the material. This is not only time-consuming and labor-intensive, but also easy to damage the forging. Utility Model Content

[0004] In view of this, the present invention provides a concave anvil structure for double-bore disc-shaped forgings, the purpose of which is to forge double-bore forgings in one piece, forging both sides of the bosses at one time, improving forging efficiency, reducing material waste, and improving the convenience of mold opening and material removal.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A concave anvil structure for a double-bore dish-shaped forging includes a bottom mold and a top mold, the top mold being disposed on top of the bottom mold. Both the bottom mold and the top mold have anvils suitable for forging the forging on opposite sides. The bottom mold and the top mold each have an interior cavity, and the cavity contains a demolding mechanism. This demolding mechanism includes a transmission wall disposed within the cavity, the transmission wall being integral with the anvil; and a vibrating element, one end of which abuts against the transmission wall, the vibrating element being adapted to strike the transmission wall.

[0007] As a preferred technical solution, the vibrating component includes a telescopic arm, which is disposed on the side of the transmission wall. The end of the telescopic arm facing the transmission wall is provided with a vibrating head, and the end of the telescopic arm away from the transmission wall is connected to a driving component.

[0008] Furthermore, a buffer layer is fitted onto the vibrating head.

[0009] Furthermore, the surface of the anvil is provided with a concave groove, which is adapted to the end of the forging.

[0010] Furthermore, guide posts are provided on both sides of the top mold, and the guide posts extend toward the bottom mold. A docking recess is provided at the corresponding position on the top of the bottom mold, and the guide posts are inserted into the docking recess.

[0011] Furthermore, a retaining ring is provided on the inner wall of the opening at the top of the docking concave tube, and the retaining ring abuts against the outer wall of the guide post.

[0012] Furthermore, a limiting block is provided at one end of the guide post that is inserted into the docking concave tube, and the top of the limiting block abuts against the bottom of the retaining ring.

[0013] Furthermore, a groove is provided on the inner wall of the docking concave tube, which extends along the length of the docking concave tube, wherein the end of the limiting block extends into the groove.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] By setting up the anvil and concave groove, when the bottom mold and the top mold are closed, both ends of the forging are pressed into the corresponding concave groove, forming a double boss structure, and the middle part of the forging is pressed into a disc shape and filled into the forming cavity composed of the two anvils, thereby achieving the purpose of integral forming of the forging.

[0016] By setting up a demolding mechanism, the vibrating component continuously strikes the transmission wall, causing it to vibrate. This vibration is transmitted to the anvil, which in turn causes the forging to vibrate. Due to the friction between the forging and the inner wall of the mold, the forging gradually separates from the inner wall of the mold during vibration, making it easier to open the mold and remove the material. This greatly improves work efficiency and avoids damage to the forging caused by difficulties in opening the mold and removing the material. Attached Figure Description

[0017] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the concave anvil structure for a double-bore dish-shaped forging provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the concave anvil structure for double-bore disc-shaped forgings provided by this utility model.

[0020] Figure 3 This utility model provides Figure 2 A magnified structural diagram of point A in the middle.

[0021] Bottom mold-1; Top mold-2; Forging-3; Cavity-4; Telescopic arm-5; Drive component-6; Vibrating head-7; Transmission wall-8; Anvil-9; Concave groove-10; Guide post-11; Connecting concave tube-12; Limiting block-13; Retaining ring-14. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0023] Example 1: In the prior art, most turbine impellers and other similar components are disc-shaped forgings with bosses on both sides. Typically, one boss can be forged using a lower die, while the other boss needs to be formed by machining. This machining method is not only inefficient but also wastes a lot of material, thus increasing production costs. Furthermore, after the forging process, the forging adheres tightly to the inner wall of the die, making it difficult to open the die and remove the material. This process is not only time-consuming and labor-intensive but also prone to damaging the forging.

[0024] Therefore, in order to solve the above problems, realize the function of integral forging of forgings, and improve the convenience of forging material handling, this utility model discloses a concave anvil structure for double-bore dish-shaped forgings. (See reference...) Figure 1 and Figure 2 The device includes a bottom mold 1 and a top mold 2, with the top mold 2 located on top of the bottom mold 1. Both the bottom mold 1 and the top mold 2 have anvils 9 on opposite sides suitable for forging a forging 3. The device is characterized in that both the bottom mold 1 and the top mold 2 have cavities 4 inside, and each cavity 4 has a demolding mechanism. This demolding mechanism includes a transmission wall 8 located within the cavity 4, which is integral with the anvil 9. A vibrating element is also included, with one end of the vibrating element abutting against the transmission wall 8, and the vibrating element is adapted to strike the transmission wall 8.

[0025] In this embodiment, the anvil 9 has a concave structure, and the top of the top mold 2 is externally connected to a lifting device. When forging the forging 3, the forging 3 is first placed between the bottom mold 1 and the top mold 2. The lifting device drives the top mold 2 to descend, so that the anvil 9 clamps and presses the forging 3. At this time, through the concave groove 10 on the surface of the anvil 9, when the bottom mold 1 and the top mold 2 are closed, both ends of the forging 3 are pressed into the corresponding concave groove 10, forming a double boss structure. The middle part of the forging 3 is pressed into a disc shape and filled into the forming cavity formed by the two anvils 9, thereby achieving the purpose of integral forming of the forging 3. When opening the mold and taking out the material, the demolding mechanism... The vibrating device continuously strikes the transmission wall 8, causing it to vibrate. This vibration is transmitted to the anvil plate 9, causing the forging 3 to vibrate as well. Due to the friction between the forging 3 and the inner wall of the mold, the forging 3 gradually separates from the inner wall of the mold during vibration, facilitating mold opening and material removal, greatly improving work efficiency, and avoiding damage to the forging 3 caused by difficulties in mold opening and material removal. Specifically, the vibrating device transmits vibration to the anvil plate 9 by striking the transmission wall 8, rather than directly striking the forging, thus minimizing damage to the forging 3.

[0026] Furthermore, the cavity 4 reduces the overall weight of the mold, making it more flexible during lifting and lowering, thus further improving work efficiency. The transmission wall 8 and the anvil plate 9 are integrated, ensuring structural stability and strength, making the mold less prone to damage during long-term use and extending its service life.

[0027] For example, the vibrating component includes a telescopic arm 5, which is located on the side of the transmission wall 8. The end of the telescopic arm 5 facing the transmission wall 8 is provided with a vibrating head 7, and the end of the telescopic arm 5 away from the transmission wall 8 is connected to a driving component 6. The driving component 6 is a cylinder or an electric push rod, which is fixedly installed on the inner wall of the cavity 4 and driven by an external power source or air source. The driving component 6 can drive the telescopic arm 5 to perform telescopic movement. During the telescopic movement, the telescopic arm 5 can drive the vibrating head 7 to move closer to or away from the transmission wall 8, thereby continuously striking the transmission wall 8.

[0028] In this embodiment, the buffer layer is a rubber sleeve, which is fitted onto the vibrating head 7. When the vibrating head 7 strikes the transmission wall 8, the rubber sleeve can act as a buffer to prevent the vibrating head 7 from causing a hard impact on the transmission wall 8, which would damage the transmission wall 8. It can also reduce the noise generated during the strike.

[0029] It should be noted that, in the initial state, the forging 3 is a red-hot metal cylinder. When it is placed between the bottom mold 1 and the top mold 2, the two ends of the forging 3 are respectively placed into the concave grooves 10 of the upper and lower anvils 9. The concave grooves 10 play a preliminary positioning role for the forging 3 to improve the concentricity of the finished product. Specifically, the surface of the anvil 9 is provided with concave grooves 10, which are adapted to the ends of the forging 3.

[0030] It is worth mentioning that punches are provided in the concave grooves 10 of the two cutting boards 9. The punches are cylindrical. When the bottom mold 1 and the top mold 2 are closed, the two punches can be inserted into the two bosses at the same time to complete the piercing operation of the finished product.

[0031] Example 2: Based on Example 1, in order to further ensure the concentricity of the forged product, it is necessary to limit the lifting movement of the top die 2 to prevent it from deviating during the lifting process. Therefore, refer to... Figure 3 The present invention further includes: guide posts 11 are provided on both sides of the top mold 2, and the guide posts 11 extend toward the bottom mold 1; a docking concave tube 12 is provided at the corresponding position on the top of the bottom mold 1, and the guide posts 11 are inserted into the docking concave tube 12.

[0032] In this embodiment, the guide post 11 and the docking concave tube 12 serve to guide and limit movement, enabling the top mold 2 to move stably along the guide post 11 during lifting and lowering, avoiding deviation and swaying, thereby further ensuring the concentricity of the forged product. During the forging process, the guide post 11 is inserted into the docking concave tube 12, providing a good guiding effect.

[0033] Furthermore, to further enhance the connection stability between the guide post 11 and the mating concave tube 12, a retaining ring 14 is provided on the inner wall of the top opening of the mating concave tube 12. The retaining ring 14 abuts against the outer wall of the guide post 11, serving as a limiting element. After the guide post 11 is inserted into the mating concave tube 12, the retaining ring 14 can prevent the guide post 11 from coming out of the mating concave tube 12, ensuring a stable connection between the top mold 2 and the bottom mold 1.

[0034] Specifically, a limiting block 13 is provided at one end of the guide post 11 that is inserted into the docking recess 12. When the guide post 11 is raised to its maximum distance, the top of the limiting block 13 abuts against the bottom of the retaining ring 14. The setting of the limiting block 13 further enhances the connection strength between the guide post 11 and the docking recess 12, and can effectively prevent the guide post 11 from coming out of the docking recess 12.

[0035] In addition, a groove is provided on the inner wall of the mating concave tube 12, extending along the length of the mating concave tube. The end of the limiting block 13 extends into the groove, allowing the limiting block 13 to slide within the groove. This arrangement not only further enhances the connection stability between the guide post 11 and the mating concave tube 12, preventing the guide post 11 from shaking or displacing during force application, but also allows the top die 2 to move more smoothly during lifting and lowering. During the forging process, the limiting block 13 slides within the groove, serving as a guide and limiting element, preventing the top die 2 from shifting or shaking during lifting and lowering.

[0036] In summary, based on Embodiments 1 and 2, the working steps of the concave anvil structure for double-bore dish-shaped forgings are as follows:

[0037] First, the forging 3 is preheated to a suitable temperature, and its two ends are placed into the concave grooves 10 of the anvil plates 9 of the bottom mold 1 and the top mold 2, respectively. The concave grooves 10 provide initial positioning for the forging 3, ensuring its concentricity. Next, the lifting device is activated, causing the top mold 2 to descend, so that the anvil plates 9 of the bottom mold 1 and the top mold 2 clamp and press the forging 3. At this time, the two ends of the forging 3 are pressed into the corresponding concave grooves 10, forming a double boss structure, and the middle part is pressed into a disc shape. After the forging is completed, the drive component 6 is activated, causing the telescopic arm 5 to extend and retract, so that the vibrating head 7 strikes the transmission wall 8. The vibration of the transmission wall 8 causes the anvil plate 9 and the forging 3 to vibrate. During the vibration, the forging 3 gradually separates from the inner wall of the mold, making it easier to open the mold and remove the material. Finally, the lifting device raises the top mold 2 and removes the forging 3. Throughout the process, the guide post 11 and the docking concave tube 12 ensure the stability of the lifting of the top mold 2, further guaranteeing the concentricity of the forged product. This concave anvil structure not only improves the production efficiency and concentricity of forgings, but also avoids damage to forgings caused by difficulties in mold opening and material removal, demonstrating significant technical benefits.

[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concave anvil structure for a double-bore dish-shaped forging, comprising a bottom mold (1) and a top mold (2), wherein the top mold (2) is disposed on top of the bottom mold (1), and both the bottom mold (1) and the top mold (2) are provided with anvils (9) suitable for forging a forging (3) on opposite sides, characterized in that, Both the bottom mold (1) and the top mold (2) have cavities (4) inside, and the cavity (4) is equipped with a demolding mechanism, which includes: Transmission wall (8), the transmission wall (8) is disposed in the cavity (4), and the transmission wall (8) and the anvil (9) are an integral structure; A vibrating element, one end of which abuts against the transmission wall (8), the vibrating element being adapted to strike the transmission wall (8).

2. The concave anvil structure for double-bore dish-shaped forgings according to claim 1, characterized in that, The vibrating component includes a telescopic arm (5), which is located on the side of the transmission wall (8). The end of the telescopic arm (5) facing the transmission wall (8) is provided with a vibrating head (7), and the end of the telescopic arm (5) away from the transmission wall (8) is connected to a driving component (6).

3. The concave anvil structure for double-bore dish-shaped forgings according to claim 2, characterized in that, A buffer layer is fitted onto the vibrating head (7).

4. The concave anvil structure for a double-bore dish-shaped forging according to claim 1, characterized in that, The surface of the anvil (9) is provided with a concave groove (10), which is adapted to the end of the forging (3).

5. The concave anvil structure for a double-bore dish-shaped forging according to claim 1, characterized in that, The top mold (2) is provided with guide posts (11) on both sides, and the guide posts (11) extend toward the bottom mold (1). The bottom mold (1) is provided with a docking concave tube (12) at the corresponding position on the top, and the guide posts (11) are inserted into the docking concave tube (12).

6. The concave anvil structure for a double-bore dish-shaped forging according to claim 5, characterized in that, A retaining ring (14) is provided on the inner wall of the top opening of the docking concave tube (12), and the retaining ring (14) abuts against the outer wall of the guide post (11).

7. The concave anvil structure for a double-bore dish-shaped forging according to claim 6, characterized in that, The guide post (11) is inserted into the docking concave tube (12) at one end and is provided with a limiting block (13). The top of the limiting block (13) abuts against the bottom of the retaining ring (14).

8. The concave anvil structure for a double-bore dish-shaped forging according to claim 7, characterized in that, The inner wall of the docking concave tube (12) is provided with a sliding groove, which extends along the length direction of the docking concave tube (12), wherein the end of the limiting block (13) extends into the sliding groove.

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