Powder metallurgy forming supercharging device

Abstract

The utility model relates to the technical field of powder metallurgy forming pressurization, and discloses a powder metallurgy forming pressurization device which comprises supporting legs, a base fixedly connected with the upper sides of the supporting legs, a lifting sleeve fixedly connected with the upper surface of the base, and a piston rod in sealed sliding connection with the interior of the lifting sleeve. The upper side of the lifting sleeve is fixedly connected with a pressing table, the outer wall of a piston rod is fixedly connected with a balance weight table and a lifting table, a die-casting mechanism is arranged on the inner side of the lifting table, a pressurizing auxiliary mechanism is arranged on the upper side of the base, the die-casting mechanism comprises a sliding frame, the sliding frame is fixedly connected to the upper surface of the base, and one side of the base is fixedly connected with an electric push rod. The pressurizing auxiliary mechanism is used for die-casting and auxiliary die-casting, metal powder die-casting can be more compact, meanwhile, the situation that when a pressure head is pulled out, the internal pressure of a pressure cavity is unbalanced, and a finished product is affected can be avoided, the die-casting mechanism is used for downwards pressing the metal powder, the yield can be conveniently guaranteed, and meanwhile the die-casting quality can be improved compared with a traditional device.

Description

A powder metallurgy forming pressurization device Technical Field

[0001] This utility model relates to the field of powder metallurgy forming pressurization technology, specifically a powder metallurgy forming pressurization device. Background Technology

[0002] Powder metallurgy is a processing technology that uses metal powder to form solid parts through high-temperature sintering. Unlike traditional casting and forging processes, powder metallurgy allows for precise control of material composition, structure, and properties, enabling the manufacture of complex shapes and high-performance materials that are difficult to process using other methods. This technology is widely used in aerospace, automotive, tooling, electronics, and medical fields, and is particularly suitable for the production of high-performance materials and complex components. The advantages of powder metallurgy products include high material density, excellent mechanical properties, and savings in raw materials and energy. In the powder metallurgy forming process, the pressurizing device plays a crucial role. By applying external pressure, it helps the metal powder achieve uniform compaction within the forming mold, thereby ensuring density uniformity and structural consistency during the forming process. Pressurization optimizes the filling, flow, and sintering characteristics of the metal powder, avoiding void defects and insufficient strength caused by insufficient forming pressure.

[0003] Metal powder and binder are mixed in a certain proportion to form a uniform powder. Then, this mixture is heated to a suitable temperature by an injection molding machine and injected into a mold. The binder is removed by a high-temperature sintering process and the metal powder is sintered into a solid to complete the final product. However, during die casting, after the press head compresses the powder into a block, the inside of the pressure chamber is close to a vacuum state. When the press head is withdrawn from the pressure chamber, it may cause a negative pressure to form inside the pressure chamber. At the same time, there may be stress inside the molded block. This may lead to insufficient density and reduced quality of the molded block. Moreover, if the force of squeezing the metal powder during die casting is insufficient, it will also lead to insufficient density of the molded block. Summary of the Invention

[0004] The purpose of this invention is to provide a powder metallurgy forming pressurization device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder metallurgy forming pressurization device, comprising a support leg, a base fixedly connected to the upper side of the support leg, a lifting sleeve fixedly connected to the upper surface of the base, a piston rod sealed and slidably connected inside the lifting sleeve, a pressure platform fixedly connected to the upper side of the lifting sleeve, a counterweight platform and a lifting platform fixedly connected to the outer wall of the piston rod, a die-casting mechanism provided inside the lifting platform, and a pressurization auxiliary mechanism provided on the upper side of the base;

[0006] The die-casting mechanism includes a sliding frame fixedly connected to the upper surface of the base. An electric actuator is fixedly connected to one side of the base, and a powder box is fixedly connected to the output end of the electric actuator. A feeding pipe is connected to one side of the powder box. A die-casting motor is fixedly connected inside the lifting platform, and a turntable is fixedly connected to the output end of the die-casting motor. The turntable is rotatably connected inside the lifting platform, and a drive rod is fixedly connected to one side of the turntable. A driven frame is slidably connected inside the lifting platform, and the drive rod is slidably connected inside the driven frame. A pressure rod is fixedly connected to the lower side of the driven frame, and the pressure rod is slidably connected inside the lifting platform. A pressure head is fixedly connected to the lower end of the pressure rod, and the pressure head extends through the counterweight platform to the lower side of the counterweight platform and is slidably connected to the counterweight platform.

[0007] Preferably, the powder box has an internal cavity that communicates with the feeding pipe, and the lower surface of the powder box is fitted to the upper surface of the pressing platform.

[0008] Preferably, the driven frame has a slot inside.

[0009] Preferably, the lifting platform has a slot inside.

[0010] Preferably, the pressurization auxiliary mechanism includes a control box, which is fixedly connected to the upper surface of the base. A dual-axis motor is fixedly connected inside the control box. A lifting platform is fitted onto the outer wall of the upper output end of the dual-axis motor. A limit post is fixedly connected to the lower surface of the pressure platform. A slide is fixedly connected to the outer wall of the lifting platform and slidably connected to the outer wall of the limit post. A top mold is fixedly connected to the upper end of the lifting platform. A pressure relief plate is slidably connected inside the top mold. A pressure regulating column is fixedly connected to the lower side of the pressure relief plate. A limit block is fixedly connected to the lower end of the pressure regulating column. An air pipe is connected to one side of the top mold. A drive groove is opened inside the lifting platform. A protrusion is fixedly connected to the outer wall of the upper output end of the dual-axis motor and slidably connected inside the drive groove. A turbine is fixedly connected to the lower output end of the dual-axis motor and is located inside the control box. A hydraulic pipe is connected between the inside of the control box and the inside of the lifting sleeve.

[0011] Preferably, the control box has multiple chambers inside, and the drive slot is configured as an elliptical structure.

[0012] Preferably, the top mold has a cavity inside, the bottom of the pressure regulating column is fitted with the inside of the top mold, and the pressure relief plate is set to be at the same level as the upper surface of the top mold.

[0013] Compared with the prior art, the present invention provides a powder metallurgy forming pressurization device, which has the following beneficial effects:

[0014] The pressurization auxiliary mechanism is used for die casting and assisting in die casting. This mechanism can apply additional pressure during the pressing of metal powder in conjunction with the die casting mechanism, thereby making the metal powder die casting more compact. At the same time, this mechanism provides an air pressure channel for the die casting cavity, which can prevent the pressure imbalance inside the cavity from affecting the finished product when the pressure head is withdrawn. This mechanism provides the die casting of metal powder through mechanical force, and during this period, the external hydraulic pressure can be applied to the metal powder to ensure that the die casting pressure meets the requirements.

[0015] The die-casting mechanism is used to press down metal powder. This mechanism can work in conjunction with the pressurization auxiliary mechanism to continuously perform die-casting. This mechanism makes it easier to coordinate the pressurization effect, which can ensure output while improving die-casting quality compared with traditional equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is a structural schematic diagram of this utility model from another perspective;

[0019] Figure 3 is a cross-sectional structural diagram of this utility model;

[0020] Figure 4 is a schematic diagram of the structure of the pressure bar in this utility model;

[0021] Figure 5 is a structural schematic diagram of the lifting platform in this utility model.

[0022] In the diagram: 1. Support leg; 2. Base; 3. Lifting sleeve; 4. Piston rod; 5. Pressing table; 6. Counterweight table; 7. Die-casting mechanism; 701. Slide frame; 702. Electric actuator; 703. Powder box; 704. Feed pipe; 705. Die-casting motor; 706. Turntable; 707. Drive rod; 708. Driven frame; 709. Pressure rod; 710. Pressure head; 8. Pressurization auxiliary mechanism; 801. Control box; 802. Dual-axis motor; 803. Lifting table; 804. Limiting column; 805. Slide frame; 806. Top mold; 807. Pressure relief plate; 808. Pressure regulating column; 809. Limiting block; 810. Air pipe; 811. Drive groove; 812. Protrusion; 813. Turbine; 814. Hydraulic pipe; 9. Lifting platform. Detailed Implementation

[0023] 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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. Embodiments

[0025] This mechanism is used for die casting. The pressure auxiliary mechanism is used in conjunction with the mechanism to solve the problem of insufficient pressure. Please refer to Figures 1-5. This utility model provides a technical solution: a powder metallurgy forming pressure boosting device, including a support leg 1, a base 2 fixedly connected to the upper side of the support leg 1, a lifting sleeve 3 fixedly connected to the upper surface of the base 2, a piston rod 4 sealed and slidably connected inside the lifting sleeve, a pressure table 5 fixedly connected to the upper side of the lifting sleeve 3, a counterweight table 6 and a lifting platform 9 fixedly connected to the outer wall of the piston rod 4, a die casting mechanism 7 is provided inside the lifting platform 9, and a pressure auxiliary mechanism 8 is provided on the upper side of the base 2.

[0026] The die-casting mechanism 7 includes a slide frame 701, which is fixedly connected to the upper surface of the base 2. An electric push rod 702 is fixedly connected to one side of the base 2. A powder box 703 is fixedly connected to the output end of the electric push rod 702. A feeding pipe 704 is connected to one side of the powder box 703. A die-casting motor 705 is fixedly connected inside the lifting platform 9. A turntable 706 is fixedly connected to the output end of the die-casting motor 705. The turntable 706 is rotatably connected inside the lifting platform 9. A drive rod 707 is fixedly connected to one side of the turntable 706. A driven frame 708 is slidably connected inside the lifting platform 9. The drive rod 707 is slidably connected inside the driven frame 708. A pressure rod 709 is fixedly connected to the lower side of the driven frame 708. The pressure rod 709 is slidably connected inside the lifting platform 9. A pressure head 710 is fixedly connected to the lower end of the pressure rod 709. The pressure head 710 passes through the counterweight platform 6 and extends to the lower side of the counterweight platform 6 and is slidably connected to the counterweight platform 6.

[0027] Furthermore, the powder box 703 has an internal cavity that is connected to the feed pipe 704, and the lower surface of the powder box 703 is fitted to the upper surface of the pressure table 5.

[0028] Furthermore, the driven frame 708 has a slot inside.

[0029] Furthermore, the lifting platform 9 has a slot inside. (Example)

[0030] This mechanism is used to assist in die casting. It solves the problems of insufficient pressure during die casting and potential stress within the pressure chamber when the pressure head leaves the chamber, affecting the quality of the finished product. Please refer to Figure 1. Furthermore, in conjunction with Embodiment 1, the pressurization auxiliary mechanism 8 includes a control box 801, which is fixedly connected to the upper surface of the base 2. A dual-axis motor 802 is fixedly connected inside the control box 801. A lifting platform 803 is sleeved on the outer wall of the output end of the dual-axis motor 802. A limit post 804 is fixedly connected to the lower surface of the pressure platform 5. A slide 805 is fixedly connected to the outer wall of the lifting platform 803, and the slide 805 is slidably connected to the outer wall of the limit post 804. A top mold 806 is fixedly connected to the upper end of the lifting platform 803. A pressure relief plate 807 is slidably connected inside the top mold 806. A pressure regulating column 808 is fixedly connected to the lower side of the pressure relief plate 807. A limit block 809 is fixedly connected to the lower end of the top mold 806. An air pipe 810 is connected to one side of the top mold 806. A drive groove 811 is opened inside the lifting platform 803. A protrusion 812 is fixedly connected to the outer wall of the upper output end of the dual-axis motor 802. The protrusion 812 is slidably connected inside the drive groove 811. A turbine 813 is fixedly connected to the lower output end of the dual-axis motor 802. The turbine 813 is located inside the control box 801. A hydraulic pipe 814 is connected between the inside of the control box 801 and the inside of the lifting sleeve 3. A slot is provided inside the top mold 806 so that the pressure relief plate 807 can slide and inject air into the pressure chamber, which is convenient to remove the negative pressure inside the pressure chamber when the pressure head 710 is raised. The lifting sleeve 3 is supported by hydraulic pressure. The hydraulic pipe 814 can be connected to the valve body to open the passage at the appropriate time, so that the weight of the lifting platform 9 and the hydraulic pressure can be superimposed on the powder.

[0031] Furthermore, the control box 801 has multiple chambers inside, and the drive slot 811 is set as an elliptical structure.

[0032] Furthermore, the top mold 806 has a cavity inside, the bottom of the pressure regulating column 808 is fitted with the inside of the top mold 806, and the pressure relief plate 807 is set to be at the same level as the upper surface of the top mold 806.

[0033] In actual operation, when this device is in use, the user feeds powder material into the powder box 703, and then starts the electric push rod 702, the die-casting motor 705, and the dual-axis motor 802. As the die-casting motor 705 outputs, the turntable 706 drives the pressure head 710 to produce a reciprocating die-casting motion. The electric push rod 702 pushes the powder to the center of the pressure table 5 or pushes away the finished block at the appropriate time. With the coordinated output of the dual-axis motor 802, the lifting table 803 is driven by the groove 811 and the protrusion 812 to produce a reciprocating motion. When the pressure head 710 approaches the top mold 806, it compacts the powder. At the same time, the lower output end of the dual-axis motor 802 can be started when the user needs it. The dual-axis motor 802 drives the turbine 813 to draw away the liquid inside the lifting sleeve 3 and cause the lifting platform 9 to drive the pressure head 710 to approach the top mold 806. The powder is subjected to the additional weight of the lifting platform 9 and the counterweight platform 6, and the liquid pressure is superimposed to compact the powder. When the pressure head 710 exits the pressure chamber, the pressure relief plate 807 can move upward due to the negative pressure and release the pressure inside the pressure chamber, so that the finished product is not affected by the negative pressure.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A powder metallurgy forming pressurization device, comprising a support leg (1), a base (2) fixedly connected to the upper side of the support leg (1), a lifting sleeve (3) fixedly connected to the upper surface of the base (2), a piston rod (4) sealed and slidably connected inside the lifting sleeve, a pressure table (5) fixedly connected to the upper side of the lifting sleeve (3), a counterweight table (6) fixedly connected to the outer wall of the piston rod (4), and a lifting platform (9), characterized in that: The inner side of the lifting platform (9) is provided with a die-casting mechanism (7), and the upper side of the base (2) is provided with a pressure-applying auxiliary mechanism (8); the die-casting mechanism (7) includes a sliding frame (701), the sliding frame (701) is fixedly connected to the upper surface of the base (2), an electric push rod (702) is fixedly connected to one side of the base (2), a powder box (703) is fixedly connected to the output end of the electric push rod (702), a feeding pipe (704) is connected to one side of the powder box (703), a die-casting motor (705) is fixedly connected inside the lifting platform (9), and a turntable (706) is fixedly connected to the output end of the die-casting motor (705). The turntable (706) is rotatably connected inside the platform (9). A drive rod (707) is fixedly connected to one side of the turntable (706). A driven frame (708) is slidably connected inside the platform (9). The drive rod (707) is slidably connected inside the driven frame (708). A pressure rod (709) is fixedly connected to the lower side of the driven frame (708). The pressure rod (709) is slidably connected inside the platform (9). A pressure head (710) is fixedly connected to the lower end of the pressure rod (709). The pressure head (710) extends through the counterweight platform (6) to the lower side of the counterweight platform (6) and is slidably connected to the counterweight platform (6).

2. The powder metallurgy forming pressurization device according to claim 1, characterized in that: The powder box (703) has an internal cavity that is connected to the feeding pipe (704), and the lower surface of the powder box (703) is attached to the upper surface of the pressure table (5).

3. The powder metallurgy forming pressurization device according to claim 1, characterized in that: The driven frame has a slot inside.

4. The powder metallurgy forming pressurization device according to claim 1, characterized in that: The lifting platform (9) has a slot inside.

5. The powder metallurgy forming pressurization device according to claim 1, characterized in that: The pressurization auxiliary mechanism (8) includes a control box (801), which is fixedly connected to the upper surface of the base (2). A dual-axis motor (802) is fixedly connected inside the control box (801). A lifting platform (803) is sleeved on the outer wall of the output end of the dual-axis motor (802). A limit post (804) is fixedly connected to the lower surface of the pressure platform (5). A slide (805) is fixedly connected to the outer wall of the lifting platform (803). The slide (805) is slidably connected to the outer wall of the limit post (804). A top mold (806) is fixedly connected to the upper end of the lifting platform (803). A pressure relief plate (807) is slidably connected inside the top mold (806). A pressure regulating column (808) is fixedly connected to the lower side of the top mold (806), and a limit block (809) is fixedly connected to the lower end of the pressure regulating column (808). An air pipe (810) is connected to one side of the top mold (806). A drive groove (811) is opened inside the lifting platform (803). A protrusion (812) is fixedly connected to the outer wall of the upper output end of the dual-axis motor (802). The protrusion (812) is slidably connected inside the drive groove (811). A turbine (813) is fixedly connected to the lower output end of the dual-axis motor (802). The turbine (813) is set inside the control box (801). A hydraulic pipe (814) is connected between the inside of the control box (801) and the inside of the lifting sleeve (3).

6. The powder metallurgy forming pressurization device according to claim 5, characterized in that: The control box (801) has multiple chambers inside, and the drive slot (811) is configured as an elliptical structure.

7. The powder metallurgy forming pressurization device according to claim 5, characterized in that: The top mold (806) has a cavity inside, the bottom of the pressure regulating column (808) is in contact with the inside of the top mold (806), and the pressure relief plate (807) is set to be at the same level as the upper surface of the top mold (806).

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