Stellite alloy sheet forming tool

Abstract

The embodiment of the utility model provides a stellite alloy sheet forming tool, and relates to the technical field of forming devices. The stellite alloy sheet forming tool comprises a base, four guide shafts arranged on the upper surface of the base and a lifting platform installed between the guide shafts in a sliding mode. The stellite alloy sheet forming tool further comprises a lower die installed on the upper surface of the base and an upper die installed on the lower surface of the lifting platform. An air hole is formed in the lower mold, an air supply channel communicated with the air hole is further formed in the lower mold, and the air supply channel is connected with an air source; the device further comprises a blocking mechanism used for blocking the air holes. According to the stellite alloy sheet forming tool, the automatic demolding function is achieved, the demolding difficulty is remarkably reduced, and the production efficiency and the workpiece surface quality are improved. Meanwhile, due to the design of the blocking mechanism, materials are effectively prevented from entering the air hole or the air supply channel in the pressing process, and the reliability and the service life of the mold are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of forming device technology, specifically to a Stellite alloy sheet forming tooling. Background Technology

[0002] Stellite alloy is a cobalt-based, wear-resistant, and corrosion-resistant high-temperature alloy widely used in aerospace, energy, and machinery manufacturing. Its alloy sheets are typically formed using powder metallurgy, where Stellite alloy powder is placed in a mold and pressed under high temperature and pressure using a hydraulic or mechanical press to form alloy sheets of specific shapes and sizes. This process ensures the alloy sheets possess high density, excellent mechanical properties, and surface quality, meeting the requirements of harsh operating conditions. However, the pressing process places high demands on mold design, material selection, and process parameter control to ensure product quality and production efficiency.

[0003] Currently, Stellite alloy sheets often face the problem of difficult demolding after pressing. Existing molds mostly employ traditional designs and lack automatic demolding functions, resulting in strong adhesion between the pressed alloy sheet and the mold surface. Especially under high temperature and pressure conditions, alloy powder may locally adhere to or deform the mold, further increasing demolding difficulty. Manual demolding or demolding with simple mechanical assistance is not only inefficient but may also damage the alloy sheet surface or the mold, affecting product consistency and mold lifespan. Therefore, developing a mold design or process improvement with automatic demolding functionality is crucial to improving the production efficiency and quality of Stellite alloy sheets. Utility Model Content

[0004] According to an embodiment of this utility model, a Stellite alloy sheet forming fixture is provided to solve the problems mentioned in the background art.

[0005] In a first aspect, a Stellite alloy sheet forming fixture is provided.

[0006] The Sitai alloy sheet forming fixture includes: a base, four guide shafts disposed on the upper surface of the base, and a lifting platform slidably installed between the guide shafts;

[0007] The Sitai alloy sheet forming fixture also includes a lower mold installed on the upper surface of the base and an upper mold installed on the lower surface of the lifting platform;

[0008] The lower mold has air holes, and the lower mold also has an air supply channel communicating with the air holes, and the air supply channel is connected to an air source.

[0009] It also includes a sealing mechanism for sealing the pores.

[0010] Preferably, a linear bearing is fixedly installed on the lifting platform, and the linear bearing passes through the lifting platform; the guide shaft passes through the linear bearing.

[0011] Preferably, the upper surface of the lifting platform is provided with a mounting base.

[0012] Preferably, there are two air holes, and each air hole is connected to one of the air supply channels.

[0013] Preferably, the gas source includes a storage tank and a gas pipe connected to the storage tank, the gas pipe is equipped with an electrically controlled valve, and the end of the gas pipe away from the storage tank is connected to a cannula inserted into the gas supply channel.

[0014] Preferably, the blocking mechanism includes a blocking component and a transmission assembly. The transmission assembly is connected to the lifting platform and also to the blocking component. During the descent of the lifting platform, the blocking component is driven to rise and block the air supply channel.

[0015] Preferably, the sealing element is provided with a conical surface, and the vent is provided with a contact surface that matches the conical surface.

[0016] Preferably, the transmission assembly includes a pressure rod, a transmission rod, and a connecting rod; the pressure rod is connected to the lower surface of the lifting platform, the lower end of the pressure rod has a strip groove, the transmission rod is slidably connected to the strip groove, the transmission rod is rotatably connected to the lower mold, the end of the transmission rod away from the pressure rod is rotatably connected to the connecting rod, and the connecting rod is rotatably connected to the sealing component.

[0017] Preferably, the sealing member has a hollow structure inside, and a connecting shaft is provided inside the sealing member. The end of the connecting rod away from the transmission rod is rotatably connected to the connecting shaft.

[0018] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0019] This utility model provides a Stellite alloy sheet forming fixture. A lifting platform moves downwards, causing the upper mold to move downwards as well, bringing the upper and lower molds into contact for high-pressure pressing of the Stellite alloy material. After pressing, a drive device moves the lifting platform and upper mold upwards to reset, opening the sealing mechanism. A gas source delivers high-pressure gas through the gas supply channel to the gas holes. The gas exits from the gas holes, acting on the lower surface of the pressed Stellite alloy sheet, generating an upward thrust to assist the workpiece in detaching from the lower mold. Finally, an operator or robotic arm removes the pressed Stellite alloy sheet, completing the demolding process.

[0020] This Sitaili alloy sheet forming fixture features automatic demolding, significantly reducing demolding difficulty and improving production efficiency and workpiece surface quality. Simultaneously, the sealing mechanism effectively prevents material from entering pores or air supply channels during pressing, ensuring the reliability and lifespan of the mold. The fixture is simple in structure, easy to operate, and suitable for large-scale industrial production.

[0021] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0022] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0023] Figure 1 A first-view perspective three-dimensional structural schematic diagram of a Stellite alloy sheet forming tooling according to an embodiment of the present invention is shown.

[0024] Figure 2 A second perspective perspective view of the Stellite alloy sheet forming tooling according to an embodiment of the present invention is shown.

[0025] Figure 3 An exploded view of the Stellite alloy sheet forming tooling according to an embodiment of the present invention is shown.

[0026] Figure 4 A cross-sectional view of the air supply channel of the Stellite alloy sheet forming tool according to an embodiment of the present invention is shown.

[0027] Figure 5 A cross-sectional view of the porosity of a Stellite alloy sheet forming tool according to an embodiment of the present invention is shown.

[0028] Figure 6 A three-dimensional structural schematic diagram of the sealing mechanism of the Stellite alloy sheet forming fixture according to an embodiment of the present invention is shown.

[0029] Explanation of reference numerals in the attached figures

[0030] 1-Base, 2-Guide shaft, 3-Lifting platform, 31-Linear bearing, 32-Mounting seat, 4-Lower mold, 41-Air hole, 42-Air supply channel, 5-Upper mold, 6-Air source, 61-Storage tank, 62-Air pipe, 63-Insertion tube, 64-Electrically controlled valve, 7-Sealing mechanism, 71-Sealing component, 711-Conical surface, 712-Connecting shaft, 72-Transmission assembly, 721-Pressure rod, 7211-Strip groove, 722-Transmission rod, 723-Connecting rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0033] like Figures 1 to 6 As shown, the Stellite alloy sheet forming fixture of this embodiment includes a base 1, guide shafts 2, a lifting platform 3, a lower mold 4, an upper mold 5, an air source 6, and a sealing mechanism 7. Specifically, the base 1 is the bottom support structure of the fixture, used to fix other components and withstand the pressure during the pressing process. Four guide shafts 2 are fixedly arranged on the upper surface of the base 1. The four guide shafts 2 are arranged vertically and evenly distributed to provide stable guiding function. The lifting platform 3 is installed between the four guide shafts 2 by sliding connection. The lifting platform 3 can slide up and down along the guide shafts 2 under the drive of an external drive device (such as a hydraulic press or mechanical press) to realize lifting movement.

[0034] A lower mold 4 is fixedly installed on the upper surface of the base 1. The lower mold 4 is used to hold the Stellite alloy powder or preform to be formed. An upper mold 5 is fixedly installed on the lower surface of the lifting platform 3. The upper mold 5 is arranged opposite to the lower mold 4 and can move closer to or away from the lower mold 4 under the action of the lifting platform 3. When the lifting platform 3 moves downward under the action of the driving device, the upper mold 5 moves down and fits against the lower mold 4, thereby pressing the Stellite alloy material placed on the upper surface of the lower mold 4 to form a Stellite alloy sheet with a predetermined shape and size.

[0035] To achieve automatic demolding, the lower mold 4 has multiple air holes 41 evenly distributed on its upper surface, used to spray gas downwards onto the workpiece during demolding. An air supply channel 42 is also provided inside the lower mold 4. One end of the air supply channel 42 connects to the air holes 41, and the other end is connected to an air source 6 via a pipe. The air source 6 can be a compressed air pump or other device capable of providing a stable airflow, used to supply high-pressure gas to the air supply channel 42. The arrangement of the air supply channel 42 and the air holes 41 allows gas to be ejected from the air holes 41, acting on the lower surface of the pressed Stellite alloy sheet, thereby assisting the workpiece in detaching from the lower mold 4 through airflow thrust.

[0036] In addition, the tooling also includes a sealing mechanism 7, which is used to seal the vents 41 or the air supply channel 42 during the pressing process to prevent Stellite alloy powder or materials from entering the vents 41 or the air supply channel 42 during pressing, affecting the molding quality or clogging the channel. The sealing mechanism 7 can be a controllable valve structure, such as a solenoid valve or a mechanical valve, installed at the inlet of the air supply channel 42 or inside the vent 41. During the pressing process, the sealing mechanism 7 remains closed, sealing the vents 41 or the air supply channel 42; after pressing is completed, the sealing mechanism 7 opens, allowing the air source 6 to supply gas to the vents 41 through the air supply channel 42.

[0037] The working process of this embodiment is as follows: First, Stellite alloy powder or preforms are placed on the upper surface of the lower mold 4, and the sealing mechanism 7 is in the closed state, sealing the air hole 41 or the air supply channel 42. Then, the driving device moves the lifting platform 3 downwards, and the lifting platform 3 moves the upper mold 5 downwards, so that the upper mold 5 fits against the lower mold 4, performing high-pressure pressing of the Stellite alloy material. After pressing, the driving device moves the lifting platform 3 and the upper mold 5 upwards to reset, opening the sealing mechanism 7. The air source 6 delivers high-pressure gas to the air hole 41 through the air supply channel 42. The gas is ejected from the air hole 41, acting on the lower surface of the pressed Stellite alloy sheet, generating an upward thrust to assist the workpiece in detaching from the lower mold 4. Finally, the operator or robot removes the pressed Stellite alloy sheet, completing the demolding process.

[0038] This Sitaili alloy sheet forming fixture features automatic demolding, significantly reducing demolding difficulty and improving production efficiency and workpiece surface quality. Simultaneously, the sealing mechanism 7 effectively prevents material from entering the vent 41 or air supply channel 42 during the pressing process, ensuring the reliability and service life of the mold. This fixture has a simple structure, is easy to operate, and is suitable for large-scale industrial production.

[0039] In this embodiment, a linear bearing 31 is fixedly installed on the lifting platform 3, the linear bearing 31 passes through the lifting platform 3 and is fixedly connected to it; the guide shaft 2 passes through the linear bearing 31 to realize the smooth sliding of the lifting platform 3 along the guide shaft 2.

[0040] In this embodiment, a mounting base 32 is fixedly provided on the upper surface of the lifting platform 3. The mounting base 32 is used to connect existing pressing equipment, such as a hydraulic press or a mechanical press, to drive the lifting platform 3 to perform lifting movements.

[0041] In this embodiment, there are two air holes 41, and each air hole 41 is connected to two air supply channels 42 to ensure that the gas is sprayed out evenly and to enhance the demolding effect.

[0042] In this embodiment, the air source 6 includes a storage tank 61 and an air pipe 62 communicating with the storage tank 61. An electrically controlled valve 64 is installed on the air pipe 62, and an insertion tube 63, inserted into the air supply channel 42, is connected to the end of the air pipe 62 furthest from the storage tank 61. The storage tank 61 stores compressed air. When the electrically controlled valve 64 is opened, the compressed air in the storage tank 61 is delivered through the air pipe 62 and enters the air supply channel 42 via the insertion tube 63. It is then ejected from the air hole 41, acting on the lower surface of the pressed Stellite alloy sheet, generating an upward thrust to assist the workpiece in detaching from the lower mold 4, thereby achieving automatic demolding.

[0043] In this embodiment, the sealing mechanism 7 includes a sealing element 71 and a transmission assembly 72. The transmission assembly 72 is mechanically connected to the lifting platform 3 and is linked to the sealing element 71. The sealing element 71 is disposed within the air supply channel 42 or near the air hole 41. During the descent of the lifting platform 3, the transmission assembly 72 drives the sealing element 71 to rise, thereby sealing the air supply channel 42 or the air hole 41 and preventing gas from entering the air hole 41.

[0044] In actual use, the lifting platform 3 is first lowered, at which point the transmission component 72 actuates, driving the sealing component 71 to move upward for the first time. The sealing component 71 rises to a predetermined position, blocking the air supply channel 42 or the air hole 41, preventing compressed air from entering the air hole 41. Subsequently, Stellite alloy powder or preforms are placed on the upper surface of the lower mold 4, and the lifting platform 3 continues to move downward. The descent of the lifting platform 3 further drives the transmission component 72, causing the sealing component 71 to continue moving upward. When the upper mold 5 moves downward and presses against the upper surface of the Stellite alloy material, the upper surface of the sealing component 71 rises synchronously to be flush with the upper surface of the lower mold 4, filling the air hole 41 of the lower mold 4 and forming a complete mold cavity surface, thereby ensuring the molding quality of the Stellite alloy sheet. After pressing is completed, the lifting platform 3 is raised, the transmission component 72 reverses its action, driving the sealing component 71 to descend, releasing the blockage of the air supply channel 42 or the air hole 41. At this time, the air source 6 delivers compressed air to the air hole 41 through the air supply channel 42. The gas is ejected from the air hole 41 and acts on the lower surface of the formed Stellite alloy sheet to generate thrust, which helps the workpiece to detach from the lower mold 4 and realizes automatic demolding.

[0045] In this embodiment, the upper end of the sealing member 71 is provided with a conical surface 711, and the inner wall of the vent 41 is provided with a contact surface that matches the shape of the conical surface 711. The conical surface 711 and the contact surface fit tightly together, which can improve the sealing effect of the sealing member 71 on the vent 41 and prevent Stellite alloy powder or materials from entering the vent 41 during the pressing process.

[0046] During the pressing process, when the transmission assembly 72 drives the sealing component 71 to rise, the conical surface 711 gradually fits against the contact surface inside the vent 41, forming a highly airtight sealing structure. This ensures that the vent 41 is completely sealed, thereby preventing gas leakage or material infiltration and guaranteeing the molding quality of the Stellite alloy sheet. After pressing, the lifting platform 3 rises, and the transmission assembly 72 drives the sealing component 71 to descend. The contact surface between the conical surface 711 and the vent 41 separates, and the vent 41 is reopened. At this time, the air source 6 supplies compressed air to the vent 41 through the air supply channel 42. The gas is ejected from the vent 41 and acts on the lower surface of the molded Stellite alloy sheet, generating an upward thrust to assist the workpiece in detaching from the lower mold 4, achieving efficient automatic demolding. The design of this conical surface 711 not only improves the reliability of the sealing but also simplifies the motion control of the sealing component 71 and extends the service life of the mold.

[0047] In this embodiment, the transmission assembly 72 includes a pressure rod 721, a transmission rod 722, and a connecting rod 723. The upper end of the pressure rod 721 is fixedly connected to the lower surface of the lifting platform 3, and the lower end of the pressure rod 721 has a strip groove 7211. One end of the transmission rod 722 is slidably connected to the strip groove 7211 via a sliding member, the middle part of the transmission rod 722 is rotatably connected to the lower mold 4 via a hinge structure, the end of the transmission rod 722 away from the pressure rod 721 is rotatably connected to one end of the connecting rod 723 via a hinge structure, and the other end of the connecting rod 723 is rotatably connected to the sealing member 71 via a hinge structure.

[0048] When the lifting platform 3 moves downward, it drives the pressure rod 721 to move downward synchronously. The pressure rod 721 drives the transmission rod 722 to rotate relative to the hinge point of the lower mold 4 through the strip groove 7211. One end of the transmission rod 722 connected to the pressure rod 721 slides in the strip groove 7211 to adapt to the rotational movement. The other end of the transmission rod 722 drives the connecting rod 723 to move through rotation. The connecting rod 723 then drives the sealing member 71 to move vertically, sealing the air hole 41 or the air supply channel 42. During the pressing process, the upward movement of the sealing member 71 causes its conical surface 711 to fit tightly against the contact surface of the air hole 41, forming a seal to prevent Stellite alloy powder from entering the air hole 41 and ensuring the molding quality. After pressing is completed, the lifting platform 3 rises, the pressure rod 721 moves upward accordingly, the transmission rod 722 rotates in the opposite direction, and the connecting rod 723 drives the sealing member 71 to move downward, releasing the seal on the air hole 41 or the air supply channel 42. At this time, the air source 6 delivers compressed air to the air hole 41 through the air supply channel 42. The ejected gas pushes the formed Stellite alloy sheet away from the lower mold 4, achieving automatic demolding. The transmission component 72 has a compact structure and, through a linkage design, efficiently converts the movement of the lifting platform 3 into the lifting movement of the sealing component 71, improving the reliability and operational efficiency of the tooling.

[0049] In this embodiment, the sealing member 71 has a hollow interior, and a connecting shaft 712 is fixedly installed inside the sealing member 71. The end of the connecting rod 723 away from the transmission rod 722 is rotatably connected to the connecting shaft 712 through a hinge structure to realize flexible motion transmission between the connecting rod 723 and the sealing member 71.

[0050] The hollow structure reduces the weight of the sealing component 71, facilitating rapid lifting and lowering by the transmission assembly 72, while also improving the structural strength of the sealing component 71. The connecting shaft 712 serves as a support point for the rotatable connection, ensuring that the movement of the connecting rod 723 can be stably transmitted to the sealing component 71.

[0051] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sheet forming tool for a Stellite alloy, characterized by, include: The base (1), four guide shafts (2) disposed on the upper surface of the base (1), and a lifting platform (3) slidably installed between the guide shafts (2); It also includes a lower mold (4) installed on the upper surface of the base (1) and an upper mold (5) installed on the lower surface of the lifting platform (3); The lower mold (4) is provided with an air hole (41), and the lower mold (4) is also provided with an air supply channel (42) communicating with the air hole (41), and the air supply channel (42) is connected to an air source (6). It also includes a sealing mechanism (7) for sealing the vent (41).

2. The sheet metal forming tooling of claim 1, wherein, A linear bearing (31) is fixedly installed on the lifting platform (3), and the linear bearing (31) passes through the lifting platform (3); the guide shaft (2) passes through the linear bearing (31).

3. The sheet forming tool for a Superalloy according to claim 2, wherein The upper surface of the lifting platform (3) is provided with a mounting base (32).

4. The Superalloy sheet forming tooling of claim 1, wherein, There are two air holes (41), and each air hole (41) is connected to one of the air supply channels (42).

5. The Superalloy sheet forming tooling of claim 4, wherein, The gas source (6) includes a storage tank (61) and a gas pipe (62) connected to the storage tank (61). An electric control valve (64) is provided on the gas pipe (62). One end of the gas pipe (62) away from the storage tank (61) is connected to a tube (63) inserted into the gas supply channel (42).

6. The Superalloy sheet forming tooling of claim 1, wherein, The blocking mechanism (7) includes a blocking component (71) and a transmission assembly (72). The transmission assembly (72) is connected to the lifting platform (3) and is also connected to the blocking component (71). During the descent of the lifting platform (3), the blocking component (71) will be driven to rise and block the gas supply channel (42).

7. The Superalloy sheet forming tooling of claim 6, wherein, The sealing component (71) is provided with a conical surface (711), and the air hole (41) is provided with a contact surface that matches the conical surface (711).

8. The Superalloy sheet forming tooling of claim 6, wherein, The transmission assembly (72) includes a pressure rod (721), a transmission rod (722), and a connecting rod (723); the pressure rod (721) is connected to the lower surface of the lifting platform (3), the lower end of the pressure rod (721) is provided with a strip groove (7211), the transmission rod (722) is slidably connected to the strip groove (7211), the transmission rod (722) is rotatably connected to the lower mold (4), the end of the transmission rod (722) away from the pressure rod (721) is rotatably connected to the connecting rod (723), and the connecting rod (723) is rotatably connected to the sealing member (71).

9. The Superalloy sheet forming tooling of claim 8, wherein, The sealing component (71) has a hollow structure inside, and a connecting shaft (712) is provided inside the sealing component (71). The end of the connecting rod (723) away from the transmission rod (722) is rotatably connected to the connecting shaft (712).

Images